WO2021008434A1

WO2021008434A1 - Feedback information processing method and device

Info

Publication number: WO2021008434A1
Application number: PCT/CN2020/101078
Authority: WO
Inventors: 杭海存; 施弘哲; 纪刘榴; 毕晓艳; 王明哲
Original assignee: 华为技术有限公司
Priority date: 2019-07-12
Filing date: 2020-07-09
Publication date: 2021-01-21
Also published as: CN112217621A; CN112217621B

Abstract

Disclosed are a feedback information processing method and device. In the feedback information processing method, a terminal at least calculates feedback information on the basis of a PDSCH retransmitted by a first transmission time unit; and sending the feedback information on a first feedback time unit. The first transmission time unit is the last transmission time unit, for retransmitting the PDSCH, in a feedback window of the first feedback time unit. Therefore, the terminal sends the feedback information of the PDSCH on at least two feedback time units, such that the reliability of the feedback information can be ensured. In addition, the first feedback time unit is not the last one from among a plurality of feedback time units, such that a delay resulting from the terminal only being able to send the feedback information of the PDSCH on the last feedback time unit is avoided, namely, fast feedback can be realized. The technical solution provided in the present application is applicable to HARQ-ACK information feedback corresponding to a semi-static HARQ-ACK codebook and a dynamic HARQ-ACK codebook.

Description

Feedback information processing method and equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on July 12, 2019, the application number is 201910633103.4, and the application name is "Feedback Information Processing Method and Equipment", the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of communication technology, and in particular to a method and equipment for processing feedback information.

Background technique

With the rapid development of mobile communications, there are higher requirements in many aspects such as system capacity, instantaneous peak rate, spectrum efficiency, cell edge user throughput, and time delay. In the communication transmission process, many small packet burst services are generated, such as ultra-reliable low-latency communication (URLLC) services.

In order to ensure the reliability of transmission, repeated transmission is often used to solve the problem. However, for multiple time units that repeatedly transmit the same physical downlink share channel (PDSCH), only the feedback time unit corresponding to the last transmission time unit of the PDSCH is repeatedly transmitted in the multiple time units. The hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information of the PDSCH is fed back.

It can be seen that the feedback information is only sent once for the repeated transmission of the PDSCH, resulting in low feedback reliability.

Summary of the invention

This application discloses a feedback information processing method and equipment, which can improve the reliability of feedback.

In the first aspect, an embodiment of the present application provides a feedback information processing method. In the feedback information processing method, multiple transmission time units that repeatedly transmit PDSCH correspond to at least two feedback time units; the first feedback time unit is the at least two feedback time units. Any one of the two feedback time units; the first transmission time unit is the last transmission time unit that repeatedly transmits the PDSCH in the feedback window of the first feedback time unit. The terminal may calculate feedback information at least according to the PDSCH repeatedly transmitted by the first transmission time unit; and send the feedback information on the first feedback time unit.

It can be seen that the embodiment of the present application can send the feedback information of the PDSCH in two feedback time units respectively, thereby improving the reliability of the feedback.

In an implementation manner, the feedback information may be the PDSCH transmitted by the terminal according to the first transmission time unit, or the PDSCH transmitted by at least one of the first transmission time unit and the transmission time unit before it, calculated acquired. Wherein, if there is no transmission time unit for transmitting the PDSCH before the first transmission time unit, the terminal may calculate the feedback information according to the PDSCH transmitted by the first transmission time unit.

In an embodiment, the at least two feedback time units include a second feedback time unit, and the time domain position of the first feedback time unit is before the time domain position of the second feedback time unit. It can be seen that this implementation avoids the delay caused by the terminal only being able to transmit the feedback information of the PDSCH on the uplink time unit corresponding to the last transmission time unit among all the transmission time units that repeatedly transmit the PDSCH. Thus, it is possible to realize quick feedback of feedback information.

In the semi-static HARQ-ACK codebook, based on the feedback timing set configured by the RRC, it is determined that multiple transmission time units for repeated transmission of the PDSCH are located in the feedback window of two uplink time units. In this embodiment of the application, both the above two uplink time units can be used as feedback time units to feed back the feedback information of the PDSCH respectively. In particular, the uplink time unit with the earlier position in the time domain can also be used to feed back the feedback information of the PDSCH, so that The network device can receive the PDSCH feedback information relatively early.

For another example, in a dynamic HARQ-ACK codebook, the embodiment of the present application can determine two feedback time units corresponding to multiple transmission time units that repeatedly transmit the PDSCH to feed back the feedback information of the PDSCH respectively. This enhances the reliability of the feedback and at the same time facilitates rapid feedback.

In an implementation manner, when the feedback information sent in the first feedback time unit is positive feedback ACK information, the terminal may directly send the ACK information in the second feedback time unit. Therefore, it is avoided that the terminal calculates the feedback information of the PDSCH again after receiving the PDSCH transmitted by the transmission time unit of the PDSCH repeatedly in the feedback window of the second feedback time unit. Therefore, this embodiment reduces the processing load of the terminal.

In the embodiment of the present application, in each transmission time unit of repeated transmission of the PDSCH, within one transmission time unit, the number of repeated transmissions of the PDSCH may be once or twice. Wherein, the PDSCH is repeatedly transmitted multiple times in a transmission time unit, which may also be referred to as repeated transmission in a transmission time unit. It can be seen that the same PDSCH can be repeatedly transmitted between multiple transmission time units, and can also be repeatedly transmitted within multiple transmission time units.

For example, suppose that the time domain resource occupied by a PDSCH transmission is two symbols; one transmission time unit is a time slot; and the PDSCH is repeatedly transmitted between four time slots and repeated twice in each time slot . Then, the total number of times the PDSCH is transmitted is 2*4=8 times.

In the embodiment of this application, the feedback information of PDSCH transmission is fed back in a unit of transmission time unit, that is, no matter how many times the PDSCH is repeatedly transmitted in the same transmission time unit, the terminal feeds back the feedback information of the PDSCH. It is the same as the feedback information processing method described in the foregoing embodiment. The only difference is that the number of PDSCH transmissions used in joint decoding is different when calculating the feedback information.

In the semi-static HARQ-ACK codebook, the manner in which the terminal sends feedback information in the feedback time unit is related to the PDSCH reception timing corresponding to the PDSCH transmission. The PDSCH receiving opportunity corresponding to one or more PDSCH transmissions within a transmission time unit refers to the time domain resource occupied by the one or more PDSCH transmissions, and is part or all of a group of time domain resources corresponding to the PDSCH receiving opportunity. When the terminal feeds back the feedback information of the PDSCH, it needs to send the feedback information on the feedback information field corresponding to the PDSCH reception timing corresponding to the PDSCH transmission.

The feedback information field corresponding to the PDSCH receiving occasion is a field in the HARQ-ACK codebook. The feedback information field is used to carry one or more bits of the HARQ-ACK information of the PDSCH transmitted on the time domain resource corresponding to the PDSCH receiving occasion.

In one embodiment, the terminal can not only repeatedly transmit the PDSCH receiving opportunity corresponding to the PDSCH for the last time in the feedback window, and send the PDSCH feedback information on the corresponding feedback information field, but also can repeatedly transmit the PDSCH in other feedback windows. When the corresponding PDSCH is received, the feedback information of the PDSCH is also sent on the corresponding feedback information field.

In the embodiment of the present application, the terminal increases the number of times of feedback of the PDSCH feedback information in the HARQ-ACK codebook, which facilitates the network device to receive multiple times of the PDSCH feedback information, and greatly enhances the reliability of feedback.

For example, the feedback window of the first feedback time unit further includes a second transmission time unit, and the second transmission time unit is also a transmission time unit for repeatedly transmitting the PDSCH. Sending the feedback information by the terminal on the first feedback time unit includes: in the first feedback time unit, the terminal sends the feedback information on the feedback information field corresponding to the first PDSCH receiving opportunity, and receiving the second PDSCH The feedback information is sent on the feedback information field corresponding to the timing.

Wherein, the first PDSCH reception timing is the first transmission time unit to repeatedly transmit the PDSCH corresponding to the PDSCH; the second PDSCH reception timing is the second transmission time unit to repeatedly transmit the PDSCH corresponding to the PDSCH PDSCH reception timing.

In the semi-static HARQ-ACK codebook, the first PDSCH reception timing and the second PDSCH reception timing are determined based on multiple time domain resource allocation modes. One such time domain resource allocation method corresponds to a time domain resource for transmitting PDSCH in a transmission time unit; the time domain resource for transmitting PDSCH is a time domain resource for transmitting PDSCH once or a time domain resource for repeatedly transmitting PDSCH for multiple times. Therefore, if the total time domain resources occupied by the PDSCH transmission in a transmission time unit are part or all of the time domain resources corresponding to a certain PDSCH reception occasion, then the PDSCH transmission in the transmission time unit corresponds to the PDSCH reception occasion. Thus, it is beneficial to send feedback information on the corresponding feedback information field.

Wherein, the time domain resource for transmitting the PDSCH in one transmission time unit is the time domain resource for repeatedly transmitting the PDSCH for multiple times, according to the last symbol of the time domain resource for the first repeated transmission of the PDSCH in the transmission time unit, or The last symbol of the time domain resource for the last repeated transmission of the PDSCH in the transmission time unit determines the receiving timing of the time domain resource allocation mode.

In the dynamic HARQ-ACK codebook, at least two feedback time units corresponding to multiple transmission time units for repeated PDSCH transmission are determined according to one or more feedback timings indicated by the downlink control information. Some optional implementations are described below.

In an embodiment, the multiple transmission time units for repeatedly transmitting the PDSCH include a third transmission time unit and a fourth transmission time unit. The downlink control information indicates a feedback timing K ₁ ; the feedback timing K ₁ is the feedback timing of the third transmission time unit. Third transmission time units corresponding to the feedback time units, K ₁ is the first time unit after the transmission time of the third unit, referred to as a third feedback unit time. The fourth transmission time unit is a transmission time unit for repeatedly transmitting the PDSCH. The timing offset from the third transmission time unit to the fourth transmission time is K ₂ .

A fourth unit time corresponding to the feedback transmission unit time: time units before the third feedback upstream of K ₂ time units. Wherein, the third transmission time unit is the time unit with the lowest position in the time domain among the multiple transmission time units that repeatedly transmit the PDSCH.

Alternatively, a fourth transmission time unit corresponding to the feedback time unit: K ₂ upstream of the third feedback time units after the time unit. Wherein, the third transmission time unit is a time unit with the highest position in the time domain among multiple transmission time units for repeated transmission of the PDSCH.

In another implementation manner, the downlink control information indicates multiple feedback timings; among the multiple feedback timings, one of the feedback timings corresponds to one or more transmission time units for repeatedly transmitting the PDSCH.

Wherein, when multiple transmission time units have a feedback timing K _i , the feedback time unit corresponding to the multiple transmission time units is the Kth after the transmission time unit with the lowest time domain position among the multiple transmission time units. _i time units.

In still another embodiment, the at least two transmission time unit sets include a first transmission time unit set and a second transmission time unit set; the at least two transmission time unit sets use the sequence of time domain positions to repeat It is obtained by dividing multiple transmission time units for transmitting the PDSCH. The downlink control information indicates a feedback timing K ₁ , and the feedback timing K ₁ is the feedback timing of the first transmission time unit set. A first transmission time unit corresponding to the set feedback time units, K ₁ is the first time unit after the transmission time units after the time position of the time-domain transmission unit closest to the first set, referred to as a third feedback unit time. The timing set offset from the first transmission time unit set to the second transmission time unit set is K ₂ .

A second transmission time unit corresponding to the set feedback time unit: time units before the third feedback upstream of K ₂ time units. Wherein, the first transmission time unit set is the transmission time unit set with the lowest position in the time domain among the at least two transmission time unit sets.

Alternatively, the second transmission time corresponding to the feedback time set unit unit: K ₂ upstream of the third feedback time units after the time unit. Wherein, the first transmission time unit set is the transmission time unit set with the highest position in the time domain among the at least two transmission time unit sets.

In still another embodiment, the at least two transmission time unit sets include a first transmission time unit set and a second transmission time unit set; the at least two transmission time unit sets use the sequence of time domain positions to repeat It is obtained by dividing multiple transmission time units for transmitting the PDSCH.

The downlink control information indicates multiple feedback timings; one feedback timing corresponds to one transmission time unit set.

Assuming that the feedback timing corresponding to the first transmission time unit set is K _i , the feedback time unit corresponding to the first transmission time unit set is after the transmission time unit with the last time domain position in the first transmission time unit set. _i time unit.

Wherein, when determining the feedback time unit corresponding to the transmission time unit and the feedback window of the feedback time unit based on the feedback timing, it is specifically necessary to perform conversion according to the uplink and downlink subcarrier intervals. Among them, the above embodiments are mainly explained when the uplink and downlink subcarrier intervals are the same; if the uplink and downlink subcarrier intervals are different, the transmission time unit can be converted to the corresponding uplink time unit, and then the converted uplink time unit can be determined. K ₁ upstream first time unit as the feedback unit time.

For example, when the uplink and downlink subcarrier intervals are different, the feedback timing of the first transmission time unit is K ₁ , then the feedback time unit corresponding to the first transmission time unit is: based on the uplink and downlink subcarrier intervals, determine the conversion of the first transmission time unit up to the time corresponding to the row unit; uplink time units based on the determined first number of backward K ₁ time units as the first upstream transmission time unit corresponding to the feedback time unit. As another example, when the uplink and downlink sub-carrier spacing is the same, the first transmit time feedback timing unit is K _1, the first transmission time unit corresponding to the feedback unit time upstream of K ₁ after the first transmission time for that unit is directly Time unit.

Accordingly, the timing of the above transmission time unit of the third to the fourth transmission time offset K _2, it is actually the third time up to the timing of the fourth unit cell uplink time offset K _2. The third uplink time unit is an uplink time unit converted by the third transmission time unit based on the uplink and downlink subcarrier spacing; the fourth uplink time unit is an uplink time unit converted by the fourth transmission time unit based on the uplink and downlink subcarrier spacing.

When the obtained third uplink time unit and the fourth uplink time unit are the same after conversion, the feedback time unit corresponding to the third transmission time unit is the same as the feedback time unit corresponding to the fourth transmission time unit.

Correspondingly, the above-mentioned timing set offset from the first transmission time unit set to the second transmission time unit set is K ₂ , which is actually the offset from the first uplink time unit set to the second uplink time unit set The timing set is offset by K ₂ . The first uplink time unit set is an uplink time unit set formed by each transmission time unit in the first transmission time unit set based on the uplink time units obtained by conversion of the uplink and downlink subcarrier intervals. The second uplink time unit set is an uplink time unit set formed by each transmission time unit in the second transmission time unit set based on the uplink time units obtained by conversion of the uplink and downlink subcarrier intervals.

In the second aspect, the present application also provides a method for determining PDSCH reception timing. The PDSCH reception timing determination method can determine one or more PDSCH reception timings corresponding to a transmission time unit or a downlink time unit. Specifically, the method for determining the timing of receiving the PDSCH includes: determining a time domain resource allocation method for multiple repeated transmissions of the PDSCH within a downlink time unit and multiple time domain resource allocation methods for PDSCH transmission at one time, as the multiple corresponding to the downlink time unit. Time-domain resource allocation methods; for multiple time-domain resource allocation methods corresponding to the downlink time unit, each time-domain resource allocation method is determined according to the last symbol of each time-domain resource allocation method and the time-domain resource overlap between each time-domain resource allocation method The PDSCH receiving timing corresponding to the time domain resource allocation method.

Among them, for the multiple time domain resource allocation methods corresponding to the time unit, according to the last symbol of each time domain resource allocation method and the time domain resource overlap between each time domain resource allocation method, determine the corresponding time domain resource allocation method The specific implementation manner of the PDSCH receiving timing can refer to the related content in the specific implementation manner, which will not be detailed here.

Wherein, the method for determining the PDSCH receiving timing described in the second aspect may be executed by a terminal or a network device respectively.

In the third aspect, this application also provides a feedback information processing method. In order to achieve feedback enhancement, in the feedback information processing method described in this application, the terminal may use multiple frequency domain resources to send feedback information multiple times. For example, the terminal sends the feedback information separately on at least two frequency domain resources. The at least two frequency domain resources are respectively different frequency domain resources in feedback time units corresponding to multiple transmission time units that repeatedly transmit the PDSCH.

Wherein, the feedback information may be the feedback information sent in the feedback time unit in each embodiment of the application, and will not be detailed here.

It can be seen that the feedback information processing method can send feedback information on different frequency domain resources, thereby enhancing the reliability of feedback.

In the fourth aspect, this application also provides a feedback information processing method. In the feedback information processing method, the terminal can calculate feedback information at least according to the PDSCH transmitted by the first transmission time unit; the terminal sends the feedback information on the first feedback time unit. The first transmission time unit is a transmission time unit other than the last transmission time unit among the multiple transmission time units for repeatedly transmitting the PDSCH. The time domain position of the first feedback time unit is before the last transmission time unit. It can be seen that in this implementation manner, the terminal may not need to wait until the PDSCH sent by the last transmission time unit before feeding back feedback information. This implementation mode is conducive to quick feedback.

In an embodiment, the feedback information processing method further includes: the terminal sends the feedback information in the second feedback time unit. The time domain position of the second feedback time unit is after the last transmission time unit.

Wherein, the last transmission time unit is the transmission time unit with the lowest position in the time domain among multiple transmission time units for repeated transmission of the PDSCH.

In one embodiment, the feedback information sent by the terminal in the second feedback time unit is the feedback information calculated by the terminal at least according to the PDSCH transmitted by the last transmission time unit; or, it is the feedback window of the terminal according to the second feedback time unit In, the PDSCH repeatedly transmitted in each transmission time unit, and the calculated feedback information.

In another implementation manner, if the terminal sends ACK information on the first feedback time unit, the feedback information sent by the terminal on the second feedback time unit is the ACK information. That is, the terminal can directly send the ACK information in the second feedback time unit to avoid recalculation, thereby reducing the processing burden of the terminal.

In the fifth aspect, this application also provides a feedback information processing method. In the feedback information processing method, the terminal calculates the feedback information at least according to the physical downlink shared channel PDSCH repeatedly transmitted by the first transmission time unit; the terminal sends the feedback information on the first feedback time unit. The first transmission time unit is the last transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit.

It can be seen that in this embodiment, when there are transmission time units for repeated PDSCH transmission in the feedback window of the feedback time unit, the feedback information can be calculated based at least on the PDSCH repeatedly transmitted by each transmission time unit in the feedback window. This is beneficial to feedback the feedback information in time.

In an implementation manner, the time domain position of the first feedback time unit is before the last transmission time unit of repeated transmission of the PDSCH and after the first transmission time unit of repeated transmission of the PDSCH. It can be seen that this embodiment can feed back the feedback information of the PDSCH as soon as possible.

In another implementation manner, the feedback information processing method further includes: the terminal sends the feedback information in the second feedback time unit.

In an embodiment, the time domain position of the second feedback time unit is after the last transmission time unit. The last transmission time unit is the transmission time unit with the lowest position in the time domain among multiple transmission time units that repeatedly transmit the PDSCH.

For the feedback information sent by the terminal on the second feedback time unit, please refer to the description of the fourth aspect above, which will not be described in detail here.

In the sixth aspect, this application also provides a feedback information processing method. In the feedback information processing method, the terminal calculates feedback information at least according to the physical downlink shared channel PDSCH repeatedly transmitted in the first transmission time unit; the terminal sends the feedback information on the first feedback time unit. The first transmission time unit is the last transmission time unit that repeatedly transmits the PDSCH in the feedback window of the first feedback time unit; the first feedback time unit is multiple transmission time units that repeatedly transmit the PDSCH Among the uplink time units corresponding to the transmission time unit, the uplink time unit with the highest position in the time domain.

Wherein, the second feedback time unit is the uplink time unit corresponding to the multiple transmission time units that repeatedly transmit the PDSCH, the uplink time unit with the latest time domain position or the time domain position after the first feedback time unit Upstream time unit.

For the feedback information sent by the terminal in the second feedback time unit, reference may be made to the description of the fourth aspect above, which will not be described in detail here.

In an implementation manner, the feedback information processing method described in the third aspect to the sixth aspect may also be combined with the content described in the first aspect to determine at least two feedbacks corresponding to multiple transmission time units of repeated PDSCH transmission Time unit; for example, in a semi-static HARQ-ACK codebook, multiple uplink time units corresponding to the multiple transmission time units are determined based on the feedback timing set configured by RRC; one or more of the multiple determined uplink time units are determined The uplink time unit serves as the feedback time unit mentioned above. For another example, in a dynamic HARQ-ACK codebook, the terminal may determine one or more feedback time units corresponding to the multiple transmission time units according to one or more feedback timings indicated by the DCI.

In an implementation manner, the feedback information processing method described in the third aspect to the sixth aspect may also be combined with the content described in the first aspect to execute the related implementation manner of the semi-static HARQ-ACK codebook.

In an implementation manner, the feedback information processing method described in the third aspect to the sixth aspect may also be combined with the content described in the second aspect to determine the PDSCH reception timing.

In a seventh aspect, the present application also provides a feedback information processing method, which is different from the feedback information processing method described in the first aspect in that the feedback information processing method described in this aspect is from Explained on the network equipment side.

In the feedback information processing method, the network device receives the feedback information sent by the terminal on the first feedback time unit; the network device determines that the feedback information is at least the feedback information corresponding to the PDSCH repeatedly transmitted by the first transmission time unit.

In an embodiment, the first feedback time unit is any one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit PDSCH, and the first transmission time unit is the feedback of the first feedback time unit In the window, the last transmission time unit of the PDSCH is repeatedly transmitted. It can be seen that in this embodiment, the network device can receive the feedback information sent by the terminal in at least two feedback time units, thereby improving the reliability of the feedback.

In another implementation manner, the first transmission time unit is one of multiple transmission time units that repeatedly transmit the PDSCH; the time domain position of the first feedback time unit is at the end of the repeated transmission of the PDSCH One transmission time unit before. It can be seen that this embodiment can realize the feedback as soon as possible on the first feedback time unit.

In still another embodiment, the feedback information processing method further includes: the network device receives the recalculated feedback information sent by the terminal on the second feedback time unit; the network device determines that the feedback information is based on at least the last transmission time The feedback information calculated by the PDSCH transmitted by the unit. The last transmission time unit is the transmission time unit with the lowest position in the time domain among multiple transmission time units that repeatedly transmit the PDSCH. Wherein, the time domain position of the second feedback time unit is after the last transmission time unit. It can be seen that this implementation manner can realize feedback as soon as possible on the first feedback time unit, and can also receive feedback information sent by the terminal on the second feedback time unit and calculated by the terminal based on the PDSCH transmitted by multiple transmission time units.

In yet another implementation manner, the first transmission time unit is the last transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit. Correspondingly, the time domain position of the first feedback time unit is before the last transmission time unit of repeated transmission of the PDSCH. It can be seen that in this embodiment, the network device can receive the feedback information as soon as possible.

In yet another implementation manner, the first transmission time unit is the last transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit. The first feedback time unit is the feedback time unit with the highest position in the time domain among at least two feedback time units corresponding to multiple transmission time units for repeatedly transmitting the PDSCH. It can be seen that in this embodiment, the network device can receive the feedback information as soon as possible. In an implementation manner, the network device determining that the feedback information is at least the feedback information corresponding to the PDSCH repeatedly transmitted by the first transmission time unit includes: the network device determines that the feedback information is repeatedly transmitted by the first transmission time unit and the second transmission time unit Feedback information corresponding to PDSCH. That is to say, the network device can learn that the feedback information is obtained by performing joint calculations on PDSCHs that are repeatedly transmitted in the first transmission time unit and the second transmission time unit respectively. The second transmission time unit is another transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit.

Wherein, the at least two feedback time units include a second feedback time unit; the time domain position of the first feedback time unit is before the time domain position of the second feedback time unit. It can be seen that, in this embodiment, after the network device transmits the PDSCH on the first transmission time unit, it can receive the HARQ-AKC information of the PDSCH sent by the terminal on the first feedback time unit. Therefore, the network device can be as fast as possible. Get feedback information. Further, this embodiment is beneficial for the network device to decide whether to repeat the transmission of the PDSCH on other transmission time units after the first transmission time unit based on the feedback information. For example, when the received feedback information is positive feedback ACK information, the network device can use other transmission time units to schedule new data or allocate to other users without repeating the PDSCH transmission. Thus, it is beneficial to improve resource utilization.

In another implementation manner, the network device receives the positive feedback ACK information sent by the terminal on the second feedback time unit; the network device determines that the ACK information is at least the first transmission time unit ACK information corresponding to the repeatedly transmitted PDSCH. It can be seen that the network device of this embodiment can receive at least two ACK information sent by the terminal, thereby enhancing the reliability of ACK information feedback.

In an embodiment, the number of repeated transmissions of the PDSCH within one transmission time unit is one or more times.

In an implementation manner, the network device receiving the feedback information sent by the terminal in the first feedback time unit includes: the network device is in the first feedback time unit, and the feedback information corresponding to the first PDSCH reception timing The feedback information is received in the field, and the feedback information is received in the feedback information field corresponding to the second PDSCH receiving opportunity; the first PDSCH receiving opportunity is the repeated transmission of the PDSCH corresponding to the PDSCH in the first transmission time unit Reception timing; the second PDSCH reception timing is the second transmission time unit to repeatedly transmit the PDSCH reception timing corresponding to the PDSCH; the time domain position of the second transmission time unit in the feedback window of the first feedback time unit Before the first transmission time unit.

In an implementation manner, the first PDSCH reception timing and the second PDSCH reception timing are determined based on multiple time domain resource allocation methods; one of the time domain resource allocation methods corresponds to the transmission of PDSCH in a transmission time unit The time domain resource for transmitting the PDSCH is the time domain resource for transmitting the PDSCH once or the time domain resource for repeatedly transmitting the PDSCH for multiple times.

In an embodiment, when the PDSCH is repeatedly transmitted multiple times in a transmission time unit, the method further includes: according to the last symbol of the time domain resource for the first repeated transmission of the PDSCH in the transmission time unit, or the The last symbol of the time domain resource of the PDSCH is repeatedly transmitted for the last time in the transmission time unit, and the receiving timing of the time domain resource allocation manner is determined. It can be seen that this implementation manner can determine the corresponding PDSCH reception timing for repeated transmission within the transmission time unit, thereby facilitating sending feedback information in the semi-static HARQ-ACK codebook.

In an implementation manner, in the dynamic HARQ-ACK codebook, the at least two feedback time units are determined based on one feedback timing or multiple feedback timings indicated by the downlink control information.

Wherein, how to determine the at least two feedback time units according to the one feedback time sequence or multiple feedback time slots can refer to the related content described in the first aspect above, which will not be detailed here.

In an eighth aspect, the present application also provides a terminal, which has some or all of the functions of the terminal in the method examples described in the first to seventh aspects. For example, the function of the terminal may have some or all of the functions in this application. The functions in all the embodiments may also have the function of independently implementing any of the embodiments in this application. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions.

In a possible design, the structure of the terminal may include a processing unit and a communication unit, and the processing unit is configured to support the terminal to perform corresponding functions in the foregoing method. The communication unit is used to support communication between the terminal and other devices. The terminal may also include a storage unit, which is configured to be coupled with the processing unit and the sending unit, and stores necessary program instructions and data for the terminal.

In an implementation manner, the terminal includes:

A processing unit, configured to calculate feedback information at least according to the physical downlink shared channel PDSCH repeatedly transmitted by the first transmission time unit;

The communication unit is configured to send the feedback information on the first feedback time unit;

The first feedback time unit is any one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit the PDSCH;

The first transmission time unit is the last transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit.

As an example, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.

In an implementation manner, the terminal includes:

A processor, configured to calculate feedback information at least according to the physical downlink shared channel PDSCH repeatedly transmitted by the first transmission time unit;

A transceiver, configured to send the feedback information on the first feedback time unit;

In a ninth aspect, this application also provides a network device. The network device can implement part or all of the functions of the network device in the example of the method described in the seventh aspect. For example, the function of the network device can have some or all of the functions in the embodiments of the network device in this application, or can be implemented separately The function of any of the embodiments in this application. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions.

In a possible design, the structure of the network device may include a processing unit and a communication unit, and the communication unit is configured to support the network device to perform corresponding functions in the foregoing method. The communication unit is used to support communication between the network device and other devices. The network device may further include a storage unit, which is configured to be coupled with the acquisition unit and the sending unit, and stores the program instructions and data necessary for the network device.

In an implementation manner, the network device includes:

The communication unit is configured to receive feedback information sent by the terminal on the first feedback time unit; the first feedback time unit is one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit the physical downlink shared channel PDSCH Any of

The processing unit is configured to determine that the feedback information is at least the feedback information corresponding to the PDSCH that is repeatedly transmitted by the first transmission time unit; the first transmission time unit is in the feedback window of the first feedback time unit, repeated The last transmission time unit of the PDSCH is transmitted.

As an example, the communication unit may be a transceiver, the storage unit may be a memory, and the processing unit may be a processor. In an implementation manner, the network device includes:

The transceiver is configured to receive the feedback information sent by the terminal on the first feedback time unit; the first feedback time unit is one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit the physical downlink shared channel PDSCH Any of

The processor is configured to determine that the feedback information is at least the feedback information corresponding to the PDSCH repeatedly transmitted by the first transmission time unit; the first transmission time unit is in the feedback window of the first feedback time unit, repeating The last transmission time unit of the PDSCH is transmitted.

In a specific implementation process, the processor can be used to perform, for example, but not limited to, baseband related processing, and the transceiver can be used to perform, for example, but not limited to, radio frequency transceiving. The above-mentioned devices may be respectively arranged on independent chips, or at least partly or fully arranged on the same chip. For example, the processor can be further divided into an analog baseband processor and a digital baseband processor. Among them, the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be combined with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) Integrated on the same chip. Such a chip can be called a system chip (System on Chip). Whether each device is independently arranged on different chips or integrated on one or more chips often depends on the specific needs of product design. The embodiment of the present invention does not limit the specific implementation form of the foregoing device.

In a tenth aspect, the present application also provides a processor for executing the above-mentioned various methods. In the process of executing these methods, the processes of sending and receiving the information in the foregoing methods can be understood as the process of outputting the foregoing information by the processor and the process of receiving the input of the foregoing information by the processor. Specifically, when outputting the above-mentioned information, the processor outputs the above-mentioned information to the transceiver for transmission by the transceiver. Furthermore, after the above-mentioned information is output by the processor, other processing may be required before it reaches the transceiver. Similarly, when the processor receives the aforementioned information input, the transceiver receives the aforementioned information and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned information, the above-mentioned information may need to undergo other processing before being input to the processor.

Based on the foregoing principle, for example, the sending feedback information mentioned in the foregoing method can be understood as the feedback information sent and output by the processor. For another example, receiving feedback information can be understood as the processor receiving feedback information.

In this way, if there are no special instructions for the transmitting, sending and receiving operations involved in the processor, or if it does not conflict with the actual function or internal logic in the relevant description, it can be understood as a more general The processor outputs and receives, inputs and other operations, instead of transmitting, sending and receiving directly by the radio frequency circuit and antenna.

In a specific implementation process, the foregoing processor may be a processor dedicated to executing these methods, or a processor that executes computer instructions in a memory to execute these methods, such as a general-purpose processor. The above-mentioned memory may be a non-transitory (non-transitory) memory, such as a read only memory (Read Only Memory, ROM), which can be integrated with the processor on the same chip, or can be set on different chips. The embodiment does not limit the type of the memory and the setting mode of the memory and the processor.

In an eleventh aspect, this application also provides a communication system, which includes at least one terminal and at least one network device according to the above aspects. In another possible design, the system may also include other devices that interact with terminals or network devices in the solution provided in this application.

In a twelfth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the above-mentioned terminal, which includes instructions for executing any one of the first to sixth aspects of the above-mentioned method. program.

In the thirteenth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the above-mentioned network device, which includes a program for executing the second or seventh aspect of the above method.

In a fourteenth aspect, this application also provides a computer program product including instructions, which when run on a computer, causes the computer to execute the method described in any one of the first to sixth aspects.

In the fifteenth aspect, this application also provides a computer program product including instructions, which when run on a computer, cause the computer to execute the method described in the second or seventh aspect.

In a sixteenth aspect, this application also provides a computer program including instructions, which when run on a computer, causes the computer to execute the method described in the second or seventh aspect.

In a seventeenth aspect, the present application provides a chip system, which includes a processor and an interface, and is used to support the terminal to implement the functions involved in any aspect of the first to sixth aspects, for example, to determine or process the above method At least one of the data and information involved in. In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the network device. The chip system may be composed of chips, or may include chips and other discrete devices.

In an eighteenth aspect, the present application provides a chip system, which includes a processor and an interface, and is used to support a network device to implement the functions involved in the second or seventh aspect, for example, to determine or process the above-mentioned methods. At least one of the data and information involved. In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the network device. The chip system may be composed of chips, or may include chips and other discrete devices.

Description of the drawings

FIG. 1 is an example diagram of a V2X system related to an embodiment of the present application;

FIG. 2 is an example diagram of a wireless communication system related to an embodiment of the present application;

FIG. 3 is an example diagram of HARQ-ACK information feedback in the semi-static HARQ-ACK codebook involved in an embodiment of the present application;

FIG. 4 is an example diagram of PDSCH reception timing corresponding to each time domain resource allocation method involved in an embodiment of the present application;

FIG. 5 is another example diagram of PDSCH reception timing corresponding to each time domain resource allocation method involved in an embodiment of the present application;

FIG. 6 is an example diagram of HARQ-ACK information feedback in a dynamic HARQ-ACK codebook provided by an embodiment of the present application;

FIG. 7 is an example diagram of repeated PDSCH transmission provided by an embodiment of the present application;

FIG. 8 is another example diagram of repeated PDSCH transmission provided by an embodiment of the present application;

FIG. 9 is an example diagram of HARQ-ACK information feedback for repeated PDSCH transmission in the semi-static HARQ-ACK codebook currently provided;

FIG. 10 is an example diagram of the correspondence between PDSCH transmission, PDSCH reception timing, and feedback information fields involved in an embodiment of the present application;

FIG. 11 is another example diagram of HARQ-ACK information feedback for repeated transmission of PDSCH in the semi-static HARQ-ACK codebook currently provided;

FIG. 12 is another example diagram of HARQ-ACK information feedback for repeated transmission of PDSCH in the dynamic HARQ-ACK codebook currently provided;

FIG. 13 is a schematic flowchart of a feedback information processing method provided by an embodiment of the present application;

FIG. 14 is an exemplary diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of the present application;

FIG. 15 is an example diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of the present application;

16 is a schematic flowchart of another feedback information processing method provided by an embodiment of the present application;

FIG. 17 is another example diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of the present application;

18 is a schematic flowchart of yet another feedback information processing method provided by an embodiment of this application;

FIG. 19 is another example diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of this application;

20 is a schematic flowchart of yet another feedback information processing method provided by an embodiment of this application;

FIG. 21 is another example diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of this application;

FIG. 22 is another example diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of this application;

FIG. 23 is a schematic flowchart of a method for determining a PDSCH reception timing provided by an embodiment of the present application;

FIG. 24 is an example diagram of a time domain resource allocation manner for a PDSCH transmission provided by an embodiment of the present application;

FIG. 25 is an exemplary diagram of a time domain resource allocation manner for multiple PDSCH transmissions provided by an embodiment of the present application;

FIG. 26 is an example diagram of PDSCH reception timing corresponding to each time domain resource allocation method provided by an embodiment of the present application;

FIG. 27 is another example diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of this application;

FIG. 28 is an exemplary diagram of a method for determining a feedback time unit provided by an embodiment of the application;

FIG. 29 is an example diagram of a method for determining a feedback time unit provided by an embodiment of this application;

FIG. 30 is another example diagram of a method for determining a feedback time unit provided by an embodiment of this application;

FIG. 31 is another example diagram of a method for determining a feedback time unit provided by an embodiment of this application;

FIG. 32 is a schematic structural diagram of a terminal provided by an embodiment of this application;

FIG. 33 is a schematic structural diagram of a network device provided by an embodiment of this application.

Detailed ways

The technical solution in this application will be described below in conjunction with the drawings.

The technical solution of the present application can be specifically applied to various communication systems. For example, with the continuous development of communication technology, the technical solution of this application can also be used in future networks, such as 5G systems, also called new radio (NR) systems, or can be used in device to device (device to device, D2D) system, machine to machine (M2M) system and so on.

In the third generation partnership project (the 3rd generation partnership project, 3GPP), the vehicle to everything (V2X) technology (X stands for anything) that communicate with everything is proposed. The communication methods in the V2X system are collectively referred to as V2X communication. For example, the V2X communication includes: vehicle-to-vehicle (V2V) communication, vehicle to roadside infrastructure (vehicle to infrastructure, V2I) communication, vehicle to pedestrian communication (vehicle to vehicle, V2V) pedestrian, V2P) or vehicle-to-network (V2N) communication, etc. The communication between the terminal devices involved in the V2X system is widely referred to as slide link (SL) communication. The technical solution of the present application may also be applied to the Internet of Vehicles, that is, the terminal described in the present application may also be a vehicle or a vehicle component applied to a vehicle.

At present, vehicles or vehicle components can obtain road condition information or receive service information in time through V2V, V2I, V2P, or V2N communication methods. These communication methods can be collectively referred to as V2X communication. Figure 1 is a schematic diagram of a V2X system in the prior art. The diagram includes V2V communication, V2P communication, and V2I/N communication. V2X communication is aimed at high-speed devices represented by vehicles. It is the basic technology and key technology applied in scenarios with very high communication delay requirements in the future, such as smart cars, autonomous driving, and intelligent transportation systems.

As shown in Figure 1, vehicles or vehicle components communicate through V2V. Vehicles or vehicle components can broadcast their own speed, driving direction, specific location, whether emergency brakes are stepped on, and other information to surrounding vehicles. By obtaining this type of information, drivers of surrounding vehicles can better perceive traffic conditions outside the line of sight , So as to make advance judgments of dangerous situations and make avoidance; vehicles or vehicle components communicate with roadside infrastructure through V2I, and roadside infrastructure can provide various types of service information and data network access for vehicles or vehicle components . Among them, non-stop charging, in-car entertainment and other functions have greatly improved traffic intelligence. Roadside infrastructure, for example, roadside unit (RSU) includes two types: one is a terminal device type RSU. Since the RSU is distributed on the roadside, the RSU of this terminal equipment type is in a non-mobile state, and there is no need to consider mobility; the other is the RSU of the network equipment type. The RSU of this network device type can provide timing synchronization and resource scheduling for vehicles or vehicle components communicating with network devices. Vehicles or vehicle components communicate with people through V2P; vehicles or vehicle components communicate with the network through V2N. V2N and the aforementioned V2I can be collectively referred to as V2I/N.

Among them, the network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that With the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

The network equipment involved in the embodiments of the present application includes a base station (base station, BS), which may be a device that is deployed in a wireless access network and can communicate with a terminal wirelessly. Among them, the base station may have many forms, such as macro base stations, micro base stations, relay stations, and access points. Exemplarily, the base station involved in the embodiment of the present application may be a base station in 5G or a base station in LTE, where the base station in 5G may also be called a transmission reception point (TRP). In the embodiments of the present application, the device used to implement the function of the network device may be a network device; it may also be a device capable of supporting the network device to implement the function, such as a chip system, and the device may be installed in the network device. In the technical solutions provided in the embodiments of the present application, the device used to implement the functions of the network equipment is the network equipment, and the network equipment is a base station as an example to describe the technical solutions provided in the embodiments of the present application.

Among them, some scenarios in the embodiments of this application are described by taking the scenario of an NR network in a wireless communication network as an example. It should be noted that the solutions in the embodiments of this application can also be applied to other wireless communication networks, and the corresponding names can also be used. Replace with the names of corresponding functions in other wireless communication networks.

Hereinafter, the embodiments of the present application will present various aspects, embodiments, or features of the present application around a system including multiple devices, components, modules, etc. It should be understood and understood that each system may include additional devices, components, modules, etc., and/or may not include all the devices, components, modules, etc. discussed in conjunction with the drawings. In addition, a combination of these solutions can also be used.

In addition, in the embodiments of the present application, the term "exemplary" is used to indicate an example, illustration, or illustration. Any embodiment or design solution described as an "example" in this application should not be construed as being more preferable or advantageous than other embodiments or design solutions. Rather, the term example is used to present the concept in a concrete way.

In the examples of this application, "of", "relevant" and "corresponding" can sometimes be used together. It should be pointed out that when the difference is not emphasized, the meaning is Consistent. In the embodiments of the present application, at least one may also be described as one or more, and the multiple may be two, three, four or more, which is not limited in the present application. In the embodiments of this application, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C", and "D". The technical features in the "first", "second", "third", "A", "B", "C" and "D" describe the technical features in no order or size order.

Please refer to FIG. 2. FIG. 2 is a schematic diagram of a wireless communication system provided by an embodiment of the present application. As shown in FIG. 2, the wireless communication system may include: multiple network devices (for example, TRP), and one or more terminals. Among them: the network device can be used to communicate with the terminal through a wireless interface under the control of a network device controller (not shown). In some embodiments, the network device controller may be a part of the core network, or may be integrated into the network device. Specifically, the network device may be used to transmit control information or user data to the core network through a backhaul interface. Specifically, TRP1 and TRP2 may also communicate with each other directly or indirectly through a backhaul (backhaul) interface. In addition, multiple network devices can schedule the same terminal, that is, a multi-station transmission scenario. For example, multiple network devices schedule the same terminal to realize repeated transmission in the time domain.

To facilitate understanding, the following briefly introduces the related terms involved in this article.

1. Feedback

Among them, in this application, the feedback information is hybrid automatic repeat request (HARQ)-determined feedback (ACK) information. HARQ-ACK information is for fast retransmission of lost or erroneous data. For example, after receiving the physical downlink share channel (PDSCH) transmission, the terminal will determine the HARQ-ACK information transmitted by the PDSCH, such as determining to feed back ACK information/negatively feed back NACK information, and send the HARQ-ACK to the base station Information to enable the base station to determine whether the PDSCH needs to be retransmitted.

2. Downlink time unit, uplink time unit

The time unit can be one or more radio frames, one or more subframes, one or more time slots, one or more mini slots, one or more orthogonal frequency division multiplexing (orthogonal frequency division). Multiplexing, OFDM) symbols, discrete Fourier transform spread spectrum orthogonal frequency division multiplexing (discrete fourier transform spread spectrum orthogonal frequency division multiplexing, DFT-S-OFDM) symbols, etc., can also be composed of multiple frames or subframes Time window, such as the system information (SI) window. For example, the time domain resources occupied by one PDSCH transmission are one or more OFDM symbols, or one or more DFT-S-OFDM symbols, or one or more mini-slots. Among them, one mini-slot may include multiple OFDM symbols or DFT-S-OFDM symbols.

Among them, the time unit where the uplink transmission is located or the time unit containing the uplink transmission resource may be referred to as the uplink time unit; for example, the uplink time slot. The time unit where the downlink transmission is located or includes the time unit where the downlink transmission is located may be referred to as a downlink time unit; for example, a downlink time slot.

3. Semi-static HARQ-ACK codebook

According to whether the number of HARQ-ACK information bits carried on the feedback time unit is related to the actual situation of data scheduling, there may be a semi-static HARQ-ACK codebook and a dynamic HARQ-ACK codebook. Correspondingly, the terminal can use different methods to determine the correspondence between the downlink time unit and the uplink time unit according to whether the HARQ-ACK codebook is configured as a semi-static HARQ-ACK codebook or a dynamic HARQ-ACK codebook.

The semi-static HARQ-ACK codebook means that the size of the HARQ-ACK codebook does not change with the actual situation of data scheduling. That is to say, in the semi-static HARQ-ACK codebook, the size of the HARQ-ACK codebook is determined according to predefined or radio resource control (radio resource control, RRC) configuration parameters.

In the semi-static HARQ-ACK codebook, it is necessary to calculate the PDSCH reception timing set for a certain uplink time unit, and determine the HARQ-ACK codebook to be reported by the uplink time unit based on the PDSCH reception timing set. Wherein, the PDSCH reception timing set corresponding to the uplink time unit is the union of the PDSCH reception timing sets of each downlink time unit corresponding to the uplink time unit.

In the following, for the semi-static HARQ-ACK codebook, how to determine the PDSCH reception timing set corresponding to a certain uplink time unit is explained.

First, according to a predefined or RRC configured feedback timing set K ₁ {k ₀ , k ₁ , k ₂ ,..., k _M-1 }, each downlink time unit corresponding to the uplink time unit is determined. M is an integer greater than or equal to 1.

Among them, the uplink and downlink subcarrier intervals are different, and the time domain length occupied by the uplink time unit and the time domain length occupied by the downlink time unit are also different. Therefore, based on the feedback timing set, the correspondence between the uplink time unit and the downlink time unit is determined When the relationship is related, it also needs to be converted according to the uplink and downlink sub-carrier spacing, which is well known to those skilled in the art and will not be repeated here.

For example, assuming that the feedback timing set is K ₁ {k ₀ =3, k ₁ =4}, and the uplink and downlink subcarrier intervals are the same, the uplink time unit and the downlink time unit are both time slots as examples. As shown in Figure 3, time slots 4 and 6 are uplink time slots. The downlink time slot corresponding to the uplink time slot 4 is based on the uplink time slot 4, and the k ₀ (ie 3) and k ₁ (ie 4) time slots counted forward are: downlink time slot 1, downlink Time slot 0. Correspondingly, the downlink time slot corresponding to uplink time slot 6 is based on uplink time slot 6, and the k ₀ (3) and k ₁ (4)th time slots counted forward respectively are the downlink time slot 3 and the downlink time slot. Gap 2.

Secondly, according to the list of PDSCH time domain resource allocation methods configured by radio resource control (RRC) and the uplink and downlink ratio parameters of each downlink time unit, determine the PDSCH reception of each downlink time unit corresponding to the uplink time unit Time collection.

In an optional implementation manner, for each downlink time unit, whether the last symbol of each time domain resource allocation method corresponding to the downlink time unit is the earliest and whether there are time domain resources among the time domain resource allocation methods To determine the PDSCH reception timing set corresponding to the downlink time unit. Among them, the time domain resource allocation method can be used for downlink data transmission, or does not include a time domain resource allocation method configured as an uplink transmission resource. For example, a time-domain resource allocation method in which a symbol is configured as an uplink symbol can be deleted from the PDSCH time-domain resource allocation method list, and the remaining time-domain resource allocation method is a time-domain resource allocation method that can be used for downlink data transmission.

Suppose that according to the PDSCH time domain resource allocation list and uplink-downlink configuration parameters in the radio resource control (radio resource control, RRC) parameters, it is determined that a downlink time unit has optional N time domain resource allocation methods, and the selection can be used for downlink N ₁ time domain resource allocation methods for data transmission.

Where N is an integer greater than or equal to 1; when N ₁ is an integer greater than 0, perform the relevant content of (2) or (3) below; when N ₁ is equal to 0, it means that there is no PDSCH receiving opportunity for this downlink time unit.

When the terminal's capability supports multiple PDSCH transmissions in the downlink time unit, the following steps are used to determine the PDSCH reception timing corresponding to the transmission time unit;

(1) From the N ₁ time domain resource allocation methods, select N ₂ time domain resource allocation methods with the earliest last symbol; where N ₂ is an integer greater than or equal to 1 and less than or equal to the N ₁ .

The "allocation method of time domain resources with the earliest last symbol" mentioned in this article refers to the last symbol of the time domain resource corresponding to the time domain resource allocation method, and the position on the time domain resource is the first; or It means that the index value of the last symbol of the time domain resource corresponding to the time domain resource allocation method is the smallest.

(2) Determine the N ₂ time domain resource allocation methods, and N ₃ time domain resource allocation methods that have time domain overlap with the N ₂ time domain resource allocation methods among the N ₁ time domain resource allocation methods, corresponding to the same PDSCH reception timing.

Wherein, N ₃ is an integer greater than or equal to 0 and less than N ₁ .

(3) Delete the above N ₂ and N ₃ resource allocation methods from the N ₁ time domain resource allocation methods, and obtain the remaining N ₄ time domain resource allocation methods;

(4) For the remaining N ₄ time-domain resource allocation methods, perform steps (1) to (3) again until the N ₁ time-domain resource allocation methods are empty, that is, the N ₁ time-domain resource allocation methods are all Have the corresponding PDSCH reception timing.

Wherein, N ₄ is an integer greater than or equal to 0 and less than N ₁ .

For example, as shown in Figure 4, it is assumed that the downstream time slot has 6 time-domain resource allocation methods that can be used for downlink data transmission; and the terminal supports multiple PDSCH transmissions on one time unit. Based on the above (1), among the six time-domain resource allocation methods, the time-domain resource allocation method with the earliest last symbol is time-domain resource allocation method 4; based on the above-mentioned (2), the time-domain resource allocation method 4 has time Time-domain resource allocation methods with overlapping domain resources are time-domain

resource allocation methods

0, 1, and 2; determine the time-domain

resource allocation methods

4, 0, 1, and 2 corresponding to PDSCH reception timing 1; based on step (3), from the 6 After deleting the four time-domain resource allocation methods in the time-domain resource allocation method, the remaining time-domain resource allocation methods are: time-domain

resource allocation methods

3 and 5. For the remaining time-domain resource allocation methods, perform steps (1) to (3) again. The earliest time-domain resource allocation method for the last symbol is time-domain resource allocation method 5; The resource overlap is time domain resource allocation method 3; determine the time domain

resource allocation methods

3 and 5 corresponding to PDSCH receiving timing 2; so far, the six time domain resource allocation methods all have corresponding PDSCH receiving opportunities, that is, the downlink time slot The PDSCH reception timing set includes PDSCH reception timing 1 and PDSCH reception timing 2.

When the capability of the terminal does not support multiple PDSCH transmissions in one time unit, the N ₁ time domain resource allocation methods are marked as the same PDSCH reception opportunity.

For example, as shown in FIG. 5, the six time-domain resource allocation methods are marked as PDSCH reception opportunity 1, that is, the transmission time unit corresponds to a PDSCH reception opportunity 1.

In this embodiment, although multiple time-domain resource allocation methods with overlapping time-domain resources are marked as the same PDSCH reception opportunity, because multiple PDSCH transmissions are currently not allowed to overlap in time-domain resources, one PDSCH reception The time domain resource allocation method adopted for one PDSCH transmission corresponding to the timing is one of the multiple time domain resource allocation methods.

For each downlink time unit in the feedback window of the uplink time unit, the corresponding PDSCH reception time set can be determined through the above steps; the union of the PDSCH reception time set corresponding to each downlink time unit is the uplink time unit A collection of PDSCH reception timings.

In summary, in the semi-static HARQ-ACK codebook, the PDSCH reception timing corresponds to a group of time domain resources, and the group of time domain resources may receive the PDSCH. Correspondingly, the PDSCH reception timing corresponding to the PDSCH transmission refers to the time domain resources occupied by the PDSCH transmission, and is part or all of a group of time domain resources corresponding to the corresponding PDSCH reception timing.

In the uplink time unit, each PDSCH receiving occasion has a corresponding feedback information field, which is used to indicate the HARQ-ACK information of the PDSCH transmission corresponding to the PDSCH receiving occasion. Wherein, the feedback information field is a position in the HARQ-ACK codebook, and the position is used to carry one or more bits indicating the HARQ-ACK information of the PDSCH. Among them, the HARQ-ACK codebook can be sent on the uplink time unit.

In addition, the feedback information field corresponding to each PDSCH receiving opportunity in the uplink time unit corresponds to the arrangement order of each PDSCH receiving opportunity. In other words, the higher the sequence of PDSCH reception opportunities, the higher the feedback information field corresponding to the PDSCH reception opportunities.

How to arrange the PDSCH receiving timings corresponding to the PDSCHs transmitted by a transmission time unit; how to arrange the PDSCH receiving timings corresponding to the PDSCHs transmitted by each transmission time unit; and how to arrange the PDSCH receiving timings corresponding to the PDSCHs transmitted by each cell , Etc., explain in turn.

The sequence of the multiple PDSCH reception opportunities corresponding to the same downlink time unit is: in the downlink time unit, the sequence of determining the PDSCH reception opportunities in the above steps (1) to (4).

As shown in Figure 4, the order of determining the PDSCH receiving timing is: PDSCH receiving timing 1, PDSCH receiving timing 2, then in the uplink time unit, the feedback information field corresponding to PDSCH receiving timing 1 is before the feedback information field corresponding to PDSCH receiving timing 2. .

In the same transmission time unit, the sequence of PDSCH reception opportunities is: the time domain resource allocation mode corresponding to the PDSCH reception opportunities is marked as the marking sequence of the PDSCH reception opportunities.

Among different transmission time units, the arrangement order of PDSCH reception opportunities is based on the order of the time domain position of each transmission time unit.

In an embodiment, the sequence of the PDSCH reception opportunities is arranged in the sequence of the time domain position of each downlink time unit.

For example, the feedback window of the uplink time unit 4 includes

downlink time units

0 and 1, and the time domain position of the downlink time unit 0 is before the time domain position of the downlink time unit 1. The sequence of PDSCH reception timing of downlink time unit 0 is PDSCH reception timing 0-1 and PDSCH reception timing 0-2; the sequence of PDSCH reception timing of downlink time unit 1 is PDSCH reception timing 1-1 and PDSCH reception timing 1- 2. In this way, the sequence of PDSCH reception timings corresponding to the uplink time unit 4 is: PDSCH reception timing 0-1, PDSCH reception timing 0-2, PDSCH reception timing 1-1, and PDSCH reception timing 1-2.

When the terminal is configured with multiple serving cells, the sequence of PDSCH receiving occasions corresponding to different serving cells is as follows: priority is arranged based on the size order of the cell identifiers.

For example, based on the PDSCH time-domain resource allocation list and uplink-downlink configuration parameters configured in cell 1, the determined PDSCH reception timing corresponding to downlink time unit 0 is: PDSCH reception timing 1-0-1 and PDSCH reception timing 1-0- 2. The PDSCH reception timing corresponding to the downlink time unit 1 is: PDSCH reception timing 1-1-1 and PDSCH reception timing 1-1-2. Based on the PDSCH time domain resource allocation list configured in cell 2 and the uplink and downlink ratio parameters, the determined PDSCH reception timing corresponding to the downlink time unit 0 is: PDSCH reception timing 2-0-1 and PDSCH reception timing 2-0-2, And, the determined PDSCH reception timing corresponding to the downlink time unit 1 is: PDSCH reception timing 2-1-1 and PDSCH reception timing 2-1-2. Then, the sequence of the PDSCH reception timing corresponding to the uplink time unit 4 is: PDSCH reception timing 1-0-1, PDSCH reception timing 1-0-2, PDSCH reception timing 1-1-1, PDSCH reception timing 1-1 -2; PDSCH reception timing 2-0-1, PDSCH reception timing 2-0-2, PDSCH reception timing 2-1-1, PDSCH reception timing 2-1-2.

It can be seen that the order of PDSCH reception timing can be prioritized based on the cell identity for different cells; secondly, for each cell, it can be arranged based on the index number of the transmission time unit or time domain order; then, for each transmission time The multiple PDSCH receiving occasions of a unit can be arranged based on the index or marking order of the PDSCH receiving occasions.

4. Dynamic HARQ-ACK codebook

The dynamic HARQ-ACK codebook means that the size of the HARQ-ACK codebook changes as the actual situation of data scheduling changes.

For the downlink time unit scheduled by the downlink control information, the terminal determines the uplink time unit corresponding to the downlink time unit according to the feedback timing K ₁ carried in the downlink control information; further, determines the uplink time unit to report HARQ-ACK information.

Among them, in the dynamic HARQ-ACK codebook, the feedback information field is used to carry one or more bits of HARQ-ACK information of the PDSCH scheduled by the downlink control information.

Among them, in the dynamic HARQ-ACK codebook, the feedback information field for feeding back HARQ-ACK information is dynamically indicated by the HARQ feedback timing indicator field, PUCCH resource indicator field, and downlink allocation indicator field of the PDSCH scheduled by the downlink control information.

When determining the uplink time unit corresponding to the downlink time unit based on the feedback timing K ₁ , it is also necessary to consider the uplink and downlink subcarrier spacing.

If the uplink and downlink subcarrier intervals are different, first convert the downlink time unit to the uplink time unit corresponding to the uplink based on the uplink and downlink subcarrier interval; then, determine the "K ₁ "th time unit after the converted uplink time unit as determined based on the feedback timing K _1, which is a time unit corresponding to an uplink downlink time units.

If the uplink and downlink subcarrier intervals are the same, the index number of the downlink time unit is the same as the index number of the uplink time unit, without conversion; therefore, the "K ₁ "th time unit after the downlink time unit is based on feedback K ₁ determined by the timing of the downlink time units corresponding uplink time unit.

For example, as shown in Figure 6, it is assumed that the uplink and downlink subcarrier intervals are the same. Scheduling the downlink control information of the downlink time slot 3, and the indicated feedback timing is 3, then the downlink time slot 3 is used as the reference, and the third time slot counted backward, that is, the uplink time slot 6. In this way, the HARQ-ACK information of the PDSCH transmitted in the downlink time slot 3 can be sent in the uplink time slot 6.

Among them, in the dynamic HARQ-ACK codebook, the position of the HARQ-ACK information of the PDSCH transmitted in the downlink time unit in the uplink time unit is also indicated by the downlink control information. For example, it is indicated by the feedback indication field or the physical uplink control channel (PUCCH) indication field in the downlink control information.

5. Repeated transmission of the same PDSCH, one PDSCH transmission

In the wireless communication system shown in Figure 2, whether it is a scenario where one network device schedules one terminal or a scenario where multiple network devices schedule one terminal, the same physical downlink shared channel can be repeatedly transmitted on multiple time units ( Physical Downlink Share Channel, PDSCH). Therefore, it is possible to improve the robustness of transmission by using the channel's uncorrelation in time. Wherein, the frequency domain resources for repeated PDSCH transmission in each time unit are the same.

The embodiments disclosed in the present application take PDSCH as an example to illustrate the feedback information processing method. The embodiments disclosed in this application can also be applied to other downlink data.

For example, as shown in Figure 7, the same PDSCH is repeatedly transmitted between time slot n, time slot n+1, time slot n+2, time slot n+3, and each time slot repeatedly transmits the PDSCH The number is once. Among them, repeated transmission of the same PDSCH between multiple time slots can also be referred to as repeated transmission between time slots. For example, the same PDSCH is transmitted for the first time on time slot n, which is also called the first transmission, and the second transmission is performed on time slot n+1, which is also called retransmission. In this article, no distinction is made between the first transmission and the second transmission. Transmission, the same PDSCH that has been transmitted multiple times is collectively referred to as repeated transmission of the same PDSCH, or repeated transmission of PDSCH.

For another example, as shown in Figure 8, the same PDSCH is not only repeatedly transmitted between time slot n, time slot n+1, time slot n+2, and time slot n+3, but also time slot n and time slot Transmission is repeated in time slot n+1, time slot n+2, and time slot n+3. As shown in Figure 8, the PDSCH is repeatedly transmitted twice in each time slot. For example, the same PDSCH is transmitted twice in time slot n. In this article, two transmissions of the same PDSCH in time slot n are called repeated transmission of the same PDSCH, or repeated transmission of PDSCH.

Optionally, in the wireless communication system shown in FIG. 2, multiple PDSCHs may be repeatedly transmitted on multiple time units at the same time. This article describes the situation where one PDSCH is repeatedly transmitted on multiple time units. As for the scenario where multiple PDSCHs are repeatedly transmitted on multiple time units, the relevant embodiments of this application can be implemented for each PDSCH repeated transmission. Just implement it. Therefore, unless otherwise specified in the embodiments of the present application, the PDSCH described below refers specifically to the same PDSCH that is repeatedly transmitted in multiple time units. Among them, a PDSCH specifically refers to a PDSCH that is repeatedly transmitted; one PDSCH transmission or one PDSCH repeated transmission specifically refers to one transmission of the PDSCH.

6. Transmission time unit, feedback time unit

For ease of explanation, the embodiment of the present application collectively refers to downlink time units for repeated PDSCH transmission as transmission time units. That is to say, the transmission time unit in this embodiment refers to a downlink time unit that repeatedly transmits PDSCH.

Correspondingly, the uplink time unit that feeds back the HARQ-ACK information of the repeatedly transmitted PDSCH is called the feedback time unit. Wherein, the number of times that a transmission time unit repeatedly transmits the PDSCH may be one or more times.

Different transmission time units occupies different time domain resource locations, that is, different transmission time units have a sequence or a sequence of early and late in the time domain. Different feedback time units occupies different time domain resource locations, that is, different feedback time units have a sequence or an order of morning and evening in the time domain. Therefore, in this article, both the transmission time unit and the feedback time unit refer to a certain period of time in the time domain.

Wherein, the time-domain positional relationship between multiple transmission time units that repeatedly transmit PDSCH and the corresponding at least two feedback time units is: among the at least two feedback time units, the feedback time unit with the highest position in the time domain is located in the multiple feedback time units. After the transmission time unit with the highest time domain position among the transmission time units; among the at least two feedback time units, the feedback time unit with the lowest time domain position is located at the closest time domain position among the multiple transmission time units After the transmission time unit.

There is a correspondence between the transmission time unit and the feedback time unit. Based on this correspondence, the HARQ-ACK information of the repeatedly transmitted PDSCH can be sent in the corresponding feedback time unit.

In the embodiment of this application, among the multiple transmission time units of repeated PDSCH transmission, the last transmission time unit, the last transmission time unit, the transmission time unit where the last PDSCH transmission was located, and the last transmission time unit where the PDSCH was repeatedly transmitted The transmission time unit and the transmission time unit with the last position in the time domain refer to the same transmission time unit.

Correspondingly, the last transmission time unit of repeated transmission of the PDSCH in the feedback window may also be referred to as the last transmission time unit of the PDSCH. The embodiments of this application do not make limitations. Correspondingly, the feedback time unit corresponding to the transmission time unit may be referred to as the feedback time unit corresponding to the first PDSCH transmission, the last PDSCH transmission, or all PDSCH transmissions in the transmission time unit.

Among them, the transmission time unit and the feedback time unit may be a time slot or a sub-slot. In this article, in the example in conjunction with the accompanying drawings, the transmission time unit and the feedback time unit are both explained by taking the time slot as an example.

7. Feedback window

The feedback window of the feedback time unit includes one or more transmission time units that repeatedly transmit the PDSCH.

Wherein, in the semi-static HARQ-ACK codebook, the one or more transmission time units corresponding to the feedback time unit are determined based on the feedback time unit and the feedback timing set.

Among them, in the dynamic HARQ-ACK codebook, the one or more transmission time units corresponding to the feedback time unit are the feedback timing indicated by the downlink control information, or the feedback timing indicated by the downlink control information is pre-defined by the protocol or configured by RRC The combination of parameters is determined.

The feedback window of the feedback time unit may include one or more transmission time units that repeatedly transmit the PDSCH. Wherein, when the feedback window includes a transmission time unit of repeated transmission of the PDSCH, the transmission time unit is also the last transmission time unit of the repeated transmission of the PDSCH in the feedback window. Optionally, the transmission time unit is also the last transmission time unit for transmitting the PDSCH in the feedback window.

In the technical solutions currently provided, in the semi-static HARQ-ACK codebook and the dynamic HARQ-ACK codebook, for the repeatedly transmitted PDSCH, only the HARQ-ACK information of the PDSCH is fed back in one feedback time unit. That is, only the HARQ-ACK information of the PDSCH is fed back in the feedback time unit corresponding to the transmission time unit where the last PDSCH transmission is located.

For example, FIG. 9 is an example diagram of HARQ-ACK information feedback for repeated PDSCH transmission in the semi-static HARQ-ACK codebook currently provided. Assume that the transmission time unit is a time slot; the size of the feedback time unit is also a time slot, which is called a feedback time slot. In FIG. 9, the same PDSCH is repeatedly transmitted between multiple transmission time units, for example, between the transmission time unit time slot n, time slot n+1, time slot n+2, and time slot n+3. As shown in Figure 9, based on the feedback timing set configured by RRC, it is determined that the downlink time slot corresponding to uplink time slot N is time slot n and time slot n+1; the downlink time slot corresponding to uplink time slot M is time slot n+2 , Time slot n+3. Wherein, the last transmission time unit of repeated transmission of the PDSCH is time slot n+3. Therefore, the uplink time unit corresponding to time slot n+3, namely time slot M, serves as the feedback time unit corresponding to time slot n, time slot n+1, time slot n+2, and time slot n+3, which is also called feedback time Gap. As shown in FIG. 9, the terminal can send the HARQ-ACK information of the PDSCH in the time slot M. Wherein, the HARQ-ACK information is obtained by calculation based on the PDSCH transmitted in at least one of time slot n, time slot n+1, time slot n+2, and time slot n+3.

As shown in Figure 10, suppose that the PDSCH reception timing corresponding to the time domain resource for transmitting the PDSCH in time slot n is PDSCH reception timing Tn; the corresponding feedback information field in the HARQ-ACK codebook of time slot N for the PDSCH reception timing Tn is Feedback information field Bn. The PDSCH receiving timing corresponding to the time domain resource for transmitting the PDSCH in time slot n+1 is the PDSCH receiving timing Tn+1; the PDSCH receiving timing Tn+1 is the feedback information field in the HARQ-ACK codebook of the time slot N as feedback Information field Bn+1. The PDSCH receiving timing corresponding to the time domain resource for transmitting the PDSCH in time slot n+2 is the PDSCH receiving timing Tn+2; the PDSCH receiving timing Tn+2 is the feedback information field in the HARQ-ACK codebook of the time slot M as feedback Information field Bn+2. The PDSCH receiving timing corresponding to the time domain resource for transmitting the PDSCH in time slot n+3 is the PDSCH receiving timing Tn+3; the PDSCH receiving timing Tn+3 is the feedback information field in the HARQ-ACK codebook of the time slot M as feedback Information field Bn+3.

Based on the corresponding relationship described in Figure 10, it is assumed that the transmission time unit is a time slot; the size of the feedback time unit is also a time slot, which is called a feedback time slot. As shown in FIG. 11, for the uplink time slot N, since neither time slot n nor time slot n+1 is the last time slot for repeated transmission of the PDSCH, the uplink time slot N is not a feedback time slot. Therefore, in the uplink time slot N, the NACK information is directly sent on the feedback information fields Bn and Bn+1. For the uplink time slot M, time slot n+2 is not the last time slot in which the PDSCH is repeatedly transmitted. Therefore, the terminal directly sends NACK information on the feedback information field Bn+2 in time slot M. The time slot n+3 is the last time slot in which the PDSCH is repeatedly transmitted. Therefore, in the time slot M, the terminal sends HARQ-ACK information on the feedback information field Bn+3.

The current HARQ-ACK information feedback technical solution for dynamic HARQ-ACK codebooks is shown in Figure 12. The same PDSCH is in time slot n, time slot n+1, time slot n+2, and time slot n+3. When the uplink is repeatedly transmitted, the downlink control information indicates the last time slot of repeated PDSCH transmission, that is, the feedback timing of time slot n+3. According to the feedback timing, the terminal determines that the uplink time slot corresponding to time slot n+3 is time slot M. Therefore, as shown in FIG. 12, the terminal only transmits the HARQ-ACK information in the time slot M. Wherein, the HARQ-ACK information is obtained by calculation for at least one repeatedly transmitted PDSCH in time slot n, time slot n+1, time slot n+2, and time slot n+3.

Among them, in the dynamic HARQ-ACK codebook, the feedback information field for feeding back HARQ-ACK information is dynamically indicated by the feedback indication field or the PUCCH indication field in the downlink control information. Therefore, the terminal sends the HARQ-ACK information of the PDSCH in the time slot M according to the feedback information field in the HARQ-ACK codebook indicated by the downlink control information.

It can be seen that in the scenario where the same PDSCH is repeatedly transmitted between multiple transmission time units, whether it is a semi-static HARQ-ACK codebook or a dynamic HARQ-ACK codebook, in the current technical solutions provided, there are many repeated transmissions of the PDSCH. Each transmission time unit corresponds to a feedback time unit. Correspondingly, the terminal can only send HARQ-ACK information in one feedback time unit.

Therefore, this application provides a feedback information processing method. In the feedback information processing method, multiple transmission time units of repeated PDSCH transmission correspond to at least two feedback time units, and the PDSCH can be decoded as early as possible, and the HARQ-ACK information can be calculated and sent without the need for repeated transmission. After receiving the PDSCH, calculate and send HARQ-ACK information.

The feedback information processing method described in this application will be described below in conjunction with the drawings and the aforementioned terms.

Please refer to FIG. 13, which is a schematic flowchart of a feedback information processing method provided by an embodiment of the present application. As shown in Figure 13, the feedback information processing method may include the following steps:

101. The terminal calculates HARQ-ACK information at least according to the PDSCH repeatedly transmitted by the first transmission time unit.

102. The terminal sends the HARQ-ACK information on the first feedback time unit; the network device receives the HARQ-ACK information sent by the terminal on the first feedback time unit;

103. The network device determines that the HARQ-ACK information is at least HARQ-ACK information corresponding to the PDSCH repeatedly transmitted by the first transmission time unit.

In an implementation manner, the first feedback time unit is any one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit the PDSCH. The first transmission time unit is the last transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit. That is, in the feedback window of the first feedback time unit, the last transmission time unit that repeatedly transmits the PDSCH is the first transmission time unit.

Wherein, the HARQ-ACK information may be the PDSCH transmitted by the terminal according to the first transmission time unit, or the PDSCH transmitted by at least one of the first transmission time unit and the transmission time unit before it, obtained by calculation . Wherein, if there is no transmission time unit for transmitting the PDSCH before the first transmission time unit, the terminal may calculate the PDSCH transmitted by the first transmission time unit to obtain HARQ-ACK information.

Correspondingly, the network device determining that the HARQ-ACK information is at least the HARQ-ACK information corresponding to the PDSCH repeatedly transmitted by the first transmission time unit includes: the network device determines that the HARQ-ACK information is the first transmission time unit or is the first transmission time unit Unit and HARQ-ACK information corresponding to the PDSCH transmitted by at least one transmission time unit in the transmission time unit before the first transmission time unit. For example, the network device can learn that the HARQ-ACK information is obtained by performing joint calculations on PDSCHs that are repeatedly transmitted in the first transmission time unit and the second transmission time unit respectively. The second transmission time unit is another transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit.

In an embodiment, the at least two feedback time units include a second feedback time unit; the time domain position of the first feedback time unit is before the time domain position of the second feedback time unit. For example, FIG. 14 is an example diagram of HARQ-ACK information feedback provided by an embodiment of this application. Assume that the transmission time unit is a time slot; the size of the feedback time unit is also a time slot, which is called a feedback time slot. As shown in Figure 14, the terminal can calculate the HARQ-ACK information according to the time slot n+1 or the time slots n and n+1 in the feedback window of the feedback time slot N, and calculate the HARQ-ACK information in the time slot n+1. Send the HARQ-ACK information in the feedback slot N of.

It can be seen that in this embodiment, after the terminal transmits the PDSCH in the first transmission time unit in the feedback window, it can send the HARQ-AKC information of the PDSCH on the corresponding feedback time unit, so the network device can obtain HARQ as soon as possible. -ACK information.

Further, this implementation manner is beneficial for the network device to decide whether to repeat the transmission of the PDSCH in other transmission time units after the first transmission time unit based on the HARQ-ACK information. For example, when the received HARQ-ACK information is ACK information, the network device can use other transmission time units to schedule other users without repeating the transmission of the PDSCH. Correspondingly, the terminal may not expect to receive the PDSCH again in other transmission time units, but directly send the ACK information in the subsequent feedback time unit. In addition, when the network device schedules other users with other transmission time units, it can also learn that the ACK information sent in the subsequent feedback time units is still fed back by the terminal, and will not be mistaken for being sent by other users.

For example, in Figure 14, before the PDSCH is repeatedly transmitted in time slot n+2, if the network device receives the HARQ-ACK information and the HARQ-ACK information is ACK information, the network device can no longer be in time slot n+2, n The PDSCH is repeatedly transmitted on +3. Instead, the network equipment can schedule the time slot n+2, n+3 to transmit other users. Thus, it is beneficial to improve resource utilization. Correspondingly, the terminal does not expect to receive the PDSCH again in time slots n+2 and n+3, but will still directly feed back ACK information in time slot M.

In an implementation manner, the terminal may feed back HARQ-ACK information on the at least two feedback time units. The operation of the second feedback time unit is similar to the first feedback time unit, and will not be described in detail here. Take Figure 15 as an example.

Assume that the size of the transmission time unit is a time slot; the size of the feedback time unit is also a time slot, which is called a feedback time slot. As shown in Figure 15, the same PDSCH is repeatedly transmitted between time slot n, time slot n+1, time slot n+2, and time slot n+3. It is assumed that regardless of the semi-static HARQ-ACK codebook or dynamic HARQ -ACK codebook, determine that the two feedback time units corresponding to time slot n, time slot n+1, time slot n+2, and time slot n+3 are time slot N and time slot M, respectively. Among them, the feedback window of time slot N includes time slot n and time slot n+1. The feedback window of time slot M includes time slot n+2 and time slot n+3. The time domain position of time slot N is before the time domain position of time slot M. The time domain position of time slot N is after the time domain position of time slot n. The time domain position of time slot M is after the time domain position of time slot n+3.

Using the feedback information processing method described in the embodiment of the present application, as shown in FIG. 15, for the feedback window of time slot N, time slot n+1 is the last time slot in which PDSCH is repeatedly transmitted in the feedback window. Therefore, the terminal can calculate HARQ-ACK information 1 at least according to the PDSCH transmitted in the time slot n+1; further, the terminal can send the HARQ-ACK information 1 in the time slot N. Among them, HARQ-ACK information 1 can be obtained by joint calculation for the PDSCH transmitted in time slot n and time slot n+1.

As shown in FIG. 15, for the feedback window of time slot M, time slot n+3 is the last time slot in which PDSCH is repeatedly transmitted in the feedback window. The terminal may calculate HARQ-ACK information 2 at least according to the PDSCH repeatedly transmitted in the time slot n+3; further, the terminal may send the HARQ-ACK information 2 in the time slot M. Wherein, HARQ-ACK information 2 may be obtained by joint calculation for PDSCH transmitted in time slot n, time slot n+1, time slot n+2, and time slot n+3.

In summary, in the feedback information processing method, the multiple transmission time units that repeatedly transmit the PDSCH have at least two feedback time units. The network device can receive the feedback information sent by the terminal in at least two feedback time units, that is, the HARQ-ACK information of the PDSCH, thereby enhancing the reliability of the feedback.

In addition, as shown in FIG. 15, multiple transmission time units that repeatedly transmit PDSCH have at least two feedback time units, namely time slot N and time slot M. Compared with the multiple transmission time units shown in FIG. 9, there is only one feedback time. For the unit, that is, time slot M, the terminal can send HARQ-ACK information on both time slot N and time slot M, which enhances the reliability of feedback.

Please refer to FIG. 16, which is a schematic flowchart of another feedback information processing method provided by an embodiment of the present application. The feedback information processing method shown in FIG. 16 can directly send the ACK information directly in the subsequent feedback time unit when the HARQ-ACK information 1 that is the earliest feedback is ACK information, without having to combine multiple transmission PDSCHs for joint decoding again , Which can reduce the processing burden of the terminal.

As shown in FIG. 16, compared with FIG. 13, the feedback information processing method further includes the following steps:

103. When the HARQ-ACK information sent on the first feedback time unit is ACK information, the terminal directly sends the ACK information on the second feedback time unit; the network device receives the ACK information sent by the terminal on the second feedback time unit.

Wherein, the at least two feedback time units include a second feedback time unit; the time domain position of the first feedback time unit is before the time domain position of the second feedback time unit.

For example, in FIG. 17, when the HARQ-ACK information 1 sent by the terminal on the time slot N is ACK information 1, it can also directly send the ACK information 1 on the time slot M. Therefore, the terminal is prevented from recalculating the HARQ-ACK information 2 and the processing burden of the terminal is reduced.

The above-mentioned contents related to FIG. 13 and FIG. 16 are applicable to both the semi-static HARQ-ACK codebook and the dynamic HARQ-ACK codebook. In the following parts, based on the respective characteristics of the semi-static HARQ-ACK codebook and the dynamic HARQ-ACK codebook, respectively, the respective related implementation manners or examples are further described separately.

In another embodiment, in order to enhance the reliability of feedback, multiple frequency domain resources may be used to feed back the feedback information multiple times. For example, in each embodiment or implementation of the present application, the terminal may send the feedback information on at least two frequency domain resources respectively. The at least two frequency domain resources are respectively different frequency domain resources in feedback time units corresponding to multiple transmission time units that repeatedly transmit the PDSCH. It can be seen that the feedback information processing method can send feedback information on different frequency domain resources, thereby enhancing the reliability of feedback.

This application also provides a feedback information processing method. In this feedback information processing method, the operations performed by the terminal and network equipment are shown in FIG. 13. Wherein, the difference from the embodiments described in FIG. 13 to FIG. 16 is that the first transmission time unit is a transmission time unit other than the last transmission time unit among the multiple transmission time units that repeatedly transmit the PDSCH. The time domain position of the first feedback time unit is before the last transmission time unit. It can be seen that in this implementation manner, the terminal may not need to wait for the PDSCH sent by the last transmission time unit to feed back the feedback information. Therefore, this embodiment can realize quick feedback.

Correspondingly, in this implementation manner, the network device can receive the feedback information sent by the terminal on the first feedback time unit as early as possible, so that the network device can use the remaining transmission time units for scheduling other users and improve resource utilization.

For example, suppose that the transmission time units for repeated PDSCH transmission are

time slots

0, 1, 2, and 3, and the feedback time unit is feedback time slot N. Furthermore, assuming that the feedback time slot N is converted to downlink based on the uplink and downlink subcarrier spacing before time slot 3 and after time slot 2, the terminal can send the HARQ-ACK information of the PDSCH in the feedback time slot N. Wherein, the HARQ-ACK information is HARQ-ACK information obtained by joint calculation of the PDSCH transmitted in one or more of the

time slots

0, 1, and 2. Correspondingly, if the network device receives feedback information before sending the PDSCH in time slot 3, when the feedback information is ACK information, time slot 3 can be used to schedule other users.

In another implementation manner, the feedback information processing method further includes: the terminal sends the feedback information in the second feedback time unit. The time domain position of the second feedback time unit is after the last transmission time unit.

In an example, the feedback information sent by the terminal in the second feedback time unit is feedback information calculated by the terminal at least according to the PDSCH transmitted by the last transmission time unit.

In another example, if the terminal sends ACK information in the first feedback time unit, the terminal can directly send the ACK information in the second feedback time unit to avoid recalculation, thereby reducing the processing burden of the terminal.

This application also provides a feedback information processing method. In this feedback information processing method, the operations performed by the terminal and network equipment are shown in FIG. 13. Wherein, the difference from the embodiment described in FIG. 13 to FIG. 16 is that the first transmission time unit is the last transmission time unit in the feedback window of the first feedback time unit that repeatedly transmits the PDSCH.

It can be seen that in this embodiment, when there is a transmission time unit for repeated PDSCH transmission in the feedback window of the feedback time unit, the feedback information can be calculated based on the PDSCH transmitted by each transmission time unit in the feedback window. This is beneficial to feedback the feedback information in time.

In an implementation manner, the time domain position of the first feedback time unit is before the last transmission time unit of repeated transmission of the PDSCH and after the first transmission time unit of repeated transmission of the PDSCH. Specifically, the first feedback time unit may be converted to the time domain position in the downlink based on the uplink and downlink subcarrier interval, and the time domain position is before the last transmission time unit. This embodiment can feed back the feedback information of the PDSCH as soon as possible.

In an example, the feedback information sent by the terminal in the second feedback time unit is feedback information calculated by the terminal at least according to the PDSCH transmitted by the last transmission time unit. Alternatively, the terminal calculates the feedback information according to the PDSCH repeatedly transmitted by each transmission time unit in the feedback window of the second feedback time unit.

This application also provides a feedback information processing method. The operations performed by the terminal and network equipment are shown in Figure 13. Wherein, the difference from the embodiment described in FIG. 13 to FIG. 16 is that the first transmission time unit is the last transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit; The first feedback time unit is the uplink time unit with the highest position in the time domain among the uplink time units corresponding to multiple transmission time units that repeatedly transmit the PDSCH. In this case, the uplink time unit corresponding to the multiple transmission time units refers to the uplink time unit determined based on the feedback timing set or the DCI indication, rather than the uplink time unit converted based on the uplink and downlink subcarrier interval.

In another implementation manner, the feedback information processing method further includes: the terminal sends the feedback information in the second feedback time unit. The second feedback time unit is an uplink time unit corresponding to the multiple transmission time units for repeatedly transmitting the PDSCH, the uplink time unit whose time domain position is the lowest or the time domain position is after the first feedback time unit.

In an example, the feedback information sent by the terminal on the second feedback time unit is feedback information calculated by the terminal at least according to PDSCHs transmitted by each transmission time unit in the feedback window of the second feedback time unit.

Based on the various feedback information processing methods mentioned above, the following, in Part 1, explains how to determine the above-mentioned at least two feedback time units in the semi-static HARQ-ACK codebook, and combine the PDSCH reception timing to send HARQ-ACK information and another PDSCH Relevant implementations or examples such as the method for determining the timing of reception.

1.1 How to determine the above-mentioned at least two feedback time units in the semi-static HARQ-ACK codebook

In the semi-static HARQ-ACK codebook, the terminal determines at least two feedback time units, including: for each uplink time unit, the terminal determines the feedback window of each uplink time unit according to the feedback timing set configured by RRC; the terminal determines the feedback window The uplink time unit that contains the transmission time unit of repeated transmission of the PDSCH is used as the feedback time unit.

For example, according to the feedback timing set, it is determined that the feedback window of the uplink time slot N includes time slot n and time slot n+1, and the feedback window of the uplink time slot M includes time slot n+2 and time slot n+3. The time domain position of time slot N is before the time domain position of time slot M. The time domain position of time slot N is after the time domain position of time slot n. The time domain position of time slot M is after the time domain position of time slot n+3. Time slot n, time slot n+1, time slot n+2, time slot n+3 are all transmission time units for repeated transmission of the PDSCH, so the uplink time slots N and M are both when the PDSCH is repeatedly transmitted. The feedback time unit corresponding to slot n, slot n+1, slot n+2, and slot n+3. As shown in the feedback example diagrams shown in Fig. 15 and Fig. 17, the terminal can send the HARQ-ACK information of the PDSCH in time slot N and time slot M respectively.

Among them, there may be a feedback window for a certain uplink time unit, including all transmission time units for repeated transmission of the PDSCH. In this case, the terminal can determine that multiple transmission time units for repeated PDSCH transmission correspond to one feedback time unit. The embodiment of this application discusses the situation in which all transmission time units of repeated PDSCH transmissions are distributed in at least two feedback windows in the semi-static HARQ-ACK codebook. In this way, the terminal can use the at least two feedback windows corresponding to the at least two feedback windows. In the uplink time unit, at least two feedback time units are determined, thereby enhancing the reliability of feedback.

1.2 In the semi-static HARQ-ACK codebook, the HARQ-ACK information is sent in combination with the PDSCH reception timing

When the feedback window has other transmission time units to transmit the PDSCH in addition to the first transmission time unit to transmit the PDSCH, then it is also necessary to consider how to handle the PDSCH reception timing corresponding to the PDSCH transmission in other transmission time units.

Please refer to FIG. 18, which is a schematic flowchart of another feedback information processing method provided by an embodiment of the application. Compared with FIG. 13, FIG. 18 can be combined with a semi-static HARQ-ACK codebook to illustrate how to send HARQ-ACK information. As shown in Figure 18, the feedback information processing method includes the following steps:

201. The terminal calculates HARQ-ACK information at least according to the PDSCH repeatedly transmitted by the first transmission time unit;

202. The terminal sends the HARQ-ACK information in the feedback information field corresponding to the first PDSCH receiving opportunity in the first feedback time unit, and sends the NACK information in the feedback information field corresponding to the second PDSCH receiving opportunity.

Correspondingly, the network device receiving the HARQ-ACK information of the PDSCH sent by the terminal in the first feedback time unit includes: the network device receives the calculated HARQ-ACK sent by the terminal in the first feedback time unit at the first PDSCH receiving opportunity Information and the NACK information sent on the second PDSCH receiving occasion.

Wherein, the first PDSCH reception timing is the first transmission time unit to repeatedly transmit the PDSCH reception timing corresponding to the PDSCH; the second PDSCH reception timing is the second transmission time unit to repeatedly transmit the PDSCH reception timing corresponding to the PDSCH Timing; the second transmission time unit is a transmission time unit for repeating transmission of the PDSCH in the feedback window of the first feedback time unit, and the time domain position is before the first transmission time unit.

For example, please refer to FIG. 19, which is another example diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of the application. Among them, in FIG. 19, the correspondence between PDSCH transmission, PDSCH reception timing, and feedback information fields is still as shown in FIG. 10. In combination with the feedback information processing method shown in FIG. 18, as shown in FIG. 19, the terminal sends NACK information on the feedback information field Bn in the time slot N, and HARQ-ACK information 1 on the feedback information field Bn+1. The terminal sends NACK information in the feedback information field Bn+2 in the time slot M, and HARQ-ACK information 2 in the feedback information field Bn+3.

In another optional implementation manner, the terminal may directly send the calculated HAQK-ACK information at the PDSCH receiving occasion when the second transmission time unit repeatedly transmits the PDSCH in the first feedback time unit. This embodiment can enhance the reliability of HARQ-ACK information feedback.

Please refer to FIG. 20, which is a schematic flowchart of yet another feedback information processing method provided by an embodiment of the application. Compared with FIG. 18, step 301 in FIG. 20 is the same as step 201 above, and step 302 is:

302. The terminal sends the HARQ-ACK information in the feedback information field corresponding to the first PDSCH receiving opportunity in the first feedback time unit, and sends the HARQ-ACK information in the feedback information field corresponding to the second PDSCH receiving opportunity .

Correspondingly, the network device receiving the HARQ-ACK information of the PDSCH sent by the terminal on the first feedback time unit includes: the network device receives the terminal on the first feedback time unit, and the feedback information field corresponding to the first PDSCH receiving opportunity The transmitted HARQ-ACK information is the HARQ-ACK information on the feedback information field corresponding to the second PDSCH receiving opportunity.

It can be seen that this implementation manner can enable the network device to receive multiple HARQ-ACK messages sent by the terminal, thereby enhancing the reliability of feedback.

For example, please refer to FIG. 21, which is another example diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of the application. Among them, in FIG. 21, the correspondence between PDSCH transmission, PDSCH reception timing, and feedback information fields is still as shown in FIG. 10. In combination with the feedback information processing method shown in FIG. 20, as shown in FIG. 21, the terminal sends HARQ-ACK information 1 in the feedback information field Bn and the feedback information field Bn+1 in the time slot N. The terminal sends HARQ-ACK information 2 on both the feedback information field Bn+2 and the feedback information field Bn+3 in the time slot M.

Correspondingly, in the embodiment shown in FIG. 17, the terminal directly sending the ACK information in the second feedback time unit may include: the terminal is in the second feedback time unit, and each PDSCH reception opportunity corresponds to the feedback information field, Both send ACK information. Wherein, each PDSCH receiving timing is the receiving timing of the PDSCH corresponding to the PDSCH that is repeatedly transmitted in the feedback window of the second feedback time unit.

Correspondingly, the network device receives multiple ACK messages sent by the terminal. Therefore, while the feedback reliability is further enhanced, the terminal is prevented from recalculating the HARQ-ACK information of the repeatedly transmitted PDSCH, and the processing burden of the terminal is reduced.

For example, FIG. 22 is another example diagram of HARQ-ACK information feedback for repeated PDSCH transmission provided by an embodiment of the application. Compared with Figure 21, in Figure 22, the HARQ-ACK information 1 calculated by the terminal is ACK information 1, and the terminal no longer calculates HARQ-ACK information 2, but the terminal is directly in the time slot M, and the feedback information field Bn+2 , ACK information 1 is sent on the feedback information field Bn+3.

In the embodiment of the present application, among the multiple transmission time units that repeatedly transmit the PDSCH, the number of times each transmission time unit repeatedly transmits the PDSCH may be one or more times.

In the feedback information processing method described in this article, whether it is a semi-static HARQ-ACK codebook or a dynamic HARQ-ACK codebook, the HARQ-ACK information feedback takes the transmission time unit or the downlink time unit as the minimum unit. For example, the transmission time unit is a time slot, and the HARQ-ACK information feedback herein uses the time slot as the minimum unit. That is to say, the number of repeated transmissions of the PDSCH for each transmission time unit is multiple times, the transmission time unit of the PDSCH repeatedly transmitted multiple times is the same, and the corresponding feedback time unit is also the same. Therefore, within the transmission time unit, multiple repeated PDSCH transmissions correspond to the same PDSCH reception opportunity.

It can be seen from the related content of FIG. 4 and FIG. 5 that the PDSCH receiving timing is determined based on multiple time-domain resource allocation methods; one of the time-domain resource allocation methods corresponds to the time-domain resources for transmitting PDSCH in a transmission time unit. Wherein, the time domain resource for transmitting the PDSCH is the time domain resource for transmitting the PDSCH once or the time domain resource for repeatedly transmitting the PDSCH for multiple times. This will be described in detail below.

1.3. When the number of repeated PDSCH transmissions in a transmission time unit is multiple, the method for determining the PDSCH reception timing

Please refer to FIG. 23. FIG. 23 is a schematic flowchart of a method for determining a PDSCH reception timing provided by an embodiment of the present application. As shown in FIG. 23, the method for determining the PDSCH reception timing includes:

401. Update the PDSCH time domain resource allocation method list by using the target time domain resource allocation method, where the target time domain resource allocation method is a time domain resource allocation method corresponding to the time domain resources for repeatedly transmitting the PDSCH multiple times in a time unit.

402. For the updated list of PDSCH time-domain resource allocation methods, determine the PDSCH corresponding to each time-domain resource allocation method according to the last symbol of each time-domain resource allocation method and the time-domain resource overlap between each time-domain resource allocation method Receiving timing.

Specifically, in step 402, according to the content of the semi-static HARQ-ACK codebook of the terminology introduction part, the PDSCH reception timing of each time domain resource allocation method may be determined.

Before step 401, the terminal may first determine the time domain resources for repeatedly transmitting the PDSCH in one transmission time unit.

In an example, the network device informs the terminal of the number of repetitions of a PDSCH transmission through RRC signaling; the terminal obtains the time when the PDSCH is repeatedly transmitted multiple times in a transmission time unit according to the number of repetitions and the time-domain resource allocation method for one PDSCH transmission. Domain resources.

For example, please refer to FIG. 24. FIG. 24 is an example diagram of a time-domain resource allocation manner for a PDSCH transmission provided by an embodiment of the present application. As shown in FIG. 24, the time-domain resource allocation method for PDSCH transmission is the time-domain allocation method 4 in FIG. 4 or FIG. 5, that is, two symbols (also referred to as one mini-slot) are occupied. Assuming that the number of repetitions of PDSCH transmission in a transmission time unit notified by RRC signaling is 2 times and the timing offset between 2 times, the time domain resource allocation for two repeated transmissions of PDSCH in a transmission time unit is shown in Figure 25 , That is,

symbols

2, 3, 6, 7 on a time slot.

In another example, the network device notifies the terminal of the offset between multiple PDSCH repeated transmissions within a time unit; the terminal according to the offset between repeated PDSCH transmissions and the time domain resource allocation method for one PDSCH transmission, Determine the time domain resources for multiple repeated transmissions of the PDSCH within a transmission time unit.

For example, assuming that the time domain resource allocation method for PDSCH transmission is shown in Figure 24, based on the offset between repeated PDSCH transmissions of 2 symbols, multiple repeated transmissions within the same transmission time unit as shown in Figure 25 can be obtained. PDSCH time domain resource allocation method.

Among them, the two examples are mainly to determine the time-domain resource allocation method that may be used for multiple repeated transmissions of the PDSCH within a transmission time unit, and other methods may also be used to determine the time-domain resource allocation method for repeated PDSCH transmission, which is not limited in this application .

For example, based on step 201, a time domain resource allocation method for repeatedly transmitting PDSCH in a transmission time unit corresponds to a time domain resource allocation method, and the PDSCH time domain resources shown in FIG. 4 or FIG. 5 are updated based on the time domain resource allocation method. The allocation method list is to obtain the PDSCH time domain resource allocation method list as shown in FIG. 25.

In the embodiment of the present application, when the time domain resource for transmitting the PDSCH in one transmission time unit is the time domain resource for repeatedly transmitting the PDSCH for multiple times, according to the last one of the time domain resources for the first repeated transmission of the PDSCH in the transmission time unit The symbol, or the last symbol of the time domain resource for the last repeated transmission of the PDSCH in the transmission time unit, determines the receiving timing of the time domain resource allocation mode. The following example uses the last symbol of the time domain resource of the last repeated transmission of the PDSCH in the transmission time unit to determine the receiving timing of the time domain resource allocation mode as an example for illustration.

Regarding the list of PDSCH time domain resource allocation methods shown in Figure 26, suppose that the terminal supports multiple PDSCH transmissions in one time slot, and the last symbol of time domain resource allocation method 6 is the last symbol of the time domain resources occupied by the last transmission. That is the eighth symbol. Then perform steps (1) to (4) in the semi-static HARQ-ACK codebook of the term introduction part. In Figure 26, the earliest time-domain resource allocation method for the last symbol is: time-domain resource allocation method 4; the time-domain resource allocation methods that overlap with this time-domain resource allocation method 4 are: time-domain

resource allocation method

0, 1, 2, 6, so it is determined that the time domain

resource allocation methods

4, 0, 1, 2, and 6 correspond to PDSCH reception timing 1. Among the remaining time domain

resource allocation methods

3 and 5, the last symbol is the earliest time domain resource The allocation method is: time domain resource allocation method 5, and the time domain resource allocation method overlapping with this time domain resource allocation method 5 is: time domain resource allocation method 3. Therefore, it is determined that time domain

resource allocation methods

3 and 5 correspond to PDSCH receiving timing 2 .

For another example, the last symbol of time domain resource allocation mode 6 is the last symbol of the time domain resource occupied by the first transmission, that is, the fourth symbol. Then, in Figure 26, the earliest time-domain resource allocation method for the last symbol is still: time-domain resource allocation method 4. Therefore, the final PDSCH reception timing is still as shown in Figure 26. Optionally, when the last symbol of the time domain resource occupied by the first transmission is used as the last symbol of the time domain resource allocation method 6, it is assumed that the time domain resource allocation method 6 is the earliest time domain resource allocation of the last symbol In this embodiment, the order of the HARQ-ACK information of the PDSCH transmitted by the time domain resource allocation method 6 is relatively higher.

For the scenario of repeated transmission in the transmission time unit, the sequence of PDSCH reception opportunities can be found in the sequence of PDSCH reception opportunities described in the semi-static HARQ-ACK codebook in the terminology introduction. No more details here.

Correspondingly, whether it is repeated PDSCH transmission between transmission time units or PDSCH repeated transmission within transmission time units, the feedback information processing method in the semi-static HARQ-ACK codebook is as described in the foregoing embodiment.

For example, as shown in Figure 27, two repeated transmissions of PDSCH in time slot n correspond to one PDSCH reception timing Tn; two repeated transmissions of PDSCH in time slot n+1 correspond to one PDSCH reception timing Tn+1; repeated transmission in time slot n+2 Two PDSCH transmissions correspond to one PDSCH reception timing Tn+2; two repeated PDSCH transmissions in time slot n+3 correspond to one PDSCH reception timing Tn+3. As shown in Figure 10, the terminal can send NACK information on the feedback information field Bn in time slot N, and HARQ-ACK information 1 on the feedback information field Bn+1; the terminal can send feedback on time slot M NACK information is sent in the information field Bn+2, and HARQ-ACK information 2 is sent in the feedback information field Bn+3.

In another embodiment, for the situation that the PDSCH is repeatedly transmitted multiple times in the above-mentioned transmission time unit, the steps (1) to (4) in the semi-static HARQ-ACK codebook based on the above terminology have been determined. When the PDSCH receiving occasion corresponding to the time domain resource occupied by the repeated transmission of the PDSCH in the transmission time unit is directly determined as the same PDSCH receiving occasion, all the time domain resources occupied by the repeated transmission of the PDSCH in the transmission time unit are directly determined.

In another embodiment, for the case where the number of repeated transmissions of the PDSCH in a time slot is multiple times, in the time slot, between the time domain resource of the first transmission of the PDSCH and the time domain resource of the last transmission of the PDSCH All the time domain resources in can be a time domain resource allocation method. Correspondingly, the time-domain resource allocation method can also be used in the above-mentioned embodiment to update the list of PDSCH time-domain resource allocation methods, and further determine the PDSCH reception timing corresponding to the time-domain resource allocation method.

Since in the semi-static HARQ-ACK codebook, the corresponding relationship between the transmission time unit and the uplink time unit is determined by the parameters configured by RRC, accordingly, the terminal according to whether the feedback window corresponding to each uplink time unit contains By repeating the transmission time unit of the PDSCH, at least two feedback time units can be determined.

In the dynamic HARQ-ACK codebook, there are many ways to determine at least two feedback time units. In Part 2, some optional implementations are described. Wherein, after the feedback time unit corresponding to one or more transmission time units is determined, the HARQ-ACK window or feedback window of the feedback time unit includes the one or more transmission time units.

2. Method for determining at least two feedback time units in the dynamic HARQ-ACK codebook

In the dynamic HARQ-ACK codebook, the at least two feedback time units are determined by a combination of one or more of downlink control information, RRC configuration, or protocol predefined. Among them, the downlink control information may indicate one or more feedback timings.

In an optional implementation manner, the multiple transmission time units for repeated PDSCH transmission include a third transmission time unit and a fourth transmission time unit. The downlink control information indicates a feedback timing K ₁ ; the feedback timing K ₁ is the feedback timing of the third transmission time unit. Third transmission time units corresponding to the feedback time units, K ₁ is the first time unit after the transmission time of the third unit, referred to as a third feedback unit time. Further, the following example can be used to determine the feedback time unit corresponding to other transmission time units through protocol predefinition or RRC configuration.

In one example, the third transmission time unit of the timing to a fourth transmission time offset K _2; corresponding to a fourth transmission unit time of the feedback time unit: K ₂ upstream of the third feedback time units after the time unit . Wherein, the third transmission time unit is a time unit with the highest position in the time domain among multiple transmission time units for repeated transmission of the PDSCH.

Please refer to FIG. 28. FIG. 28 is an example diagram of a method for determining a feedback time slot according to an embodiment of the application. As shown in Figure 28, the multiple time slots for repeated PDSCH transmission are

time slots

0, 1, 2, and 3, respectively. The feedback timing indicated by the downlink control information is 4, and the feedback time slot corresponding to time slot 0 is uplink time slot 4. . In this way, in combination with the above implementation, it can be known that the timing offset from time slot 0 to time slot 1 is 1, and the feedback time slot corresponding to time slot 1 is: the first uplink time slot after feedback time slot 4, that is, the uplink time slot 6; the timing offset from time slot 0 to time slot 2 is 2, then the feedback time slot corresponding to time slot 2 is: the second uplink time slot after feedback time slot 4, namely uplink time slot 8; time slot 0 to The timing offset of time slot 3 is 3, then the feedback time slot corresponding to time slot 3 is: the third uplink time slot after feedback time slot 4, that is, uplink time slot 9.

It can be seen that, in the embodiment shown in FIG. 28, each transmission time unit corresponds to a feedback time unit. Therefore, the feedback window of each feedback time unit includes one transmission time unit. The corresponding feedback window is no longer marked in Figure 28.

In another example, the third to the fourth transmission time timing unit transmission time offset K _2; corresponding to a fourth transmission unit time of the feedback time unit: K ₂ upstream of a third time before the feedback time unit unit. Wherein, the third transmission time unit is the time unit with the lowest position in the time domain among the multiple transmission time units that repeatedly transmit the PDSCH.

Among them, the number of uplink time units between the transmission time unit with the highest position in the time domain and the third feedback time unit may be small, and it is impossible to achieve a one-to-one correspondence between the transmission time unit and the uplink time unit, or each The transmission time units have corresponding different feedback time units. At this time, it can be agreed by agreement that the remaining transmission time units correspond to the same uplink time unit, and the uplink time unit is used as the feedback time unit corresponding to the remaining multiple transmission time units.

Assuming that the aforementioned transmission time unit is a time slot, and the feedback time unit is a time slot, it is called a feedback time slot. Please refer to FIG. 29. FIG. 29 is an example diagram of a method for determining a feedback time slot according to an embodiment of the application. As shown in Figure 29, the multiple time slots for repeated PDSCH transmission are

time slots

0, 1, 2, and 3, respectively. The feedback timing indicated by the downlink control information is 3, and the feedback time slot corresponding to time slot 3 is uplink time slot 6. . In this way, in combination with the above implementation, it can be seen that the timing offset from time slot 3 to time slot 2 is 1, and the feedback time slot corresponding to time slot 2 is: the first uplink time slot before feedback time slot 6, that is, the uplink time slot 4.

As shown in Figure 29, since there is only one uplink time slot 4 between time slot 0 and uplink time slot 6, the remaining

time slots

0, 1, and 2 correspond to the same uplink time slot 4, that is, uplink time slot 4 is used as the three The feedback time slot corresponding to each time slot.

In the embodiment shown in FIG. 29, there are multiple transmission time units corresponding to one feedback time unit. As shown in FIG. 29, the feedback window of feedback time slot 4 includes

time slots

0, 1, and 2; the feedback window of feedback time slot 6 includes time slot 3.

In another optional implementation manner, the downlink control information indicates multiple feedback timings; among the multiple feedback timings, one of the feedback timings corresponds to one or more transmission time units for repeatedly transmitting the PDSCH.

After which, a plurality of transmission time units after the unit has a transmission time of a feedback timing when the K _i, the plurality of time units corresponding to the feedback transmission time unit, the transmission time for a plurality of time-domain units rearmost position, the K _i Time units.

In yet another optional implementation manner, the at least two transmission time unit sets include a first transmission time unit set and a second transmission time unit set; the at least two transmission time unit sets use a sequence of time domain positions , Obtained by dividing multiple transmission time units for repeated transmission of the PDSCH. The downlink control information indicates a feedback timing K ₁ , and the feedback timing K ₁ is the feedback timing of the first transmission time unit set. A first transmission time unit corresponding to the set feedback time units, K ₁ is the first time unit after the transmission time units after the time position of the time-domain transmission unit closest to the first set, referred to as a third feedback unit time. Further, the following example can be used to determine the feedback time unit corresponding to other transmission time units through protocol predefinition or RRC configuration.

In an example, the at least two transmission time unit sets further include a second transmission time unit set. A first set of transmission time to the timing of the second unit cell transmission time offset of a set of K ₂ is set; second transmission time unit corresponding to the set feedback time unit: K ₂ upstream of the third feedback time units after the time unit. Wherein, the first transmission time unit set is the transmission time unit set with the highest position in the time domain among the at least two transmission time unit sets.

The timing set offset refers to the set offset between the first set of transmission time units and the second set of transmission time units in at least two sets of transmission time units arranged based on time domain positions.

For example, assuming that the aforementioned transmission time unit is a time slot, correspondingly, the transmission time unit set is a time slot set. As shown in Fig. 30,

time slots

0 and 1 constitute a first time slot set, and

time slots

2, 3 constitute a second time slot set. One feedback timing included in the downlink control information is 3, and the feedback timing 3 is the feedback timing of the first time slot set. Based on the feedback timing 3, it is determined that the feedback time slot corresponding to the first time slot set is the uplink time slot 4.

The time sequence set offset between the first time slot set and the second time slot set is 1; the feedback time slot corresponding to the second time slot set is: the first uplink time slot after uplink time slot 4, that is, the uplink time Gap 6. Correspondingly, the feedback window of feedback time slot 4 includes

time slots

0 and 1. The feedback window of feedback slot 6 includes

slots

2 and 3.

In another example, the at least two transmission time unit sets further include a second transmission time unit set. A first set of transmission time to the timing of the second unit cell transmission time offset of a set of K ₂ is set; second transmission time unit corresponding to the set feedback time unit: time units before the third feedback upstream of K ₂ time units. Wherein, the first transmission time unit set is the transmission time unit set with the lowest position in the time domain among the at least two transmission time unit sets.

For example, assuming that the aforementioned transmission time unit is a time slot, correspondingly, the transmission time unit set is a time slot set. As shown in Fig. 31,

time slots

0 and 1 constitute the second time slot set, and

time slots

2, 3 constitute the first time slot set. One feedback time sequence included in the downlink control information is 3, and the feedback time sequence 3 is the feedback time sequence corresponding to the first time slot set. Therefore, the feedback time slot corresponding to the first time slot set is uplink time slot 6.

Among them, the time sequence set offset from the first time slot set to the second time slot set is 1, and the feedback time slot corresponding to the second time slot set is: the first uplink time slot before uplink time slot 6, that is, the uplink time Gap 4. Correspondingly, the feedback window of feedback time slot 4 includes

time slots

0 and 1. The feedback window of feedback slot 6 includes

slots

2 and 3.

In yet another optional implementation manner, the at least two transmission time unit sets include a first transmission time unit set and a second transmission time unit set; the at least two transmission time unit sets use a sequence of time domain positions , Obtained by dividing multiple transmission time units for repeated transmission of the PDSCH.

The downlink control information indicates multiple feedback timings; one feedback timing corresponds to a transmission time unit set.

For example, if the feedback timing corresponding to the first transmission time unit set is Ki, then the feedback time unit corresponding to the first transmission time unit set is the second transmission time unit after the last transmission time unit in the time domain in the first transmission time unit set. Time unit.

The set division manner of multiple transmission time units for repeated transmission of the PDSCH or the respective transmission time unit sets to which they belong can be determined through protocol predefinition, RRC configuration, or downlink control information indication, which is not limited in this application.

It can be seen that in this embodiment, the time slots in the divided time slot set are the same as the time slots in the feedback window of the feedback time slot corresponding to the time slot set. Thus, feedback information can be sent or received based on the above feedback information processing method.

FIG. 32 shows a simplified schematic diagram of a possible design structure of the terminal involved in the foregoing embodiment. The terminal may be the terminal shown in FIG. 2. The terminal includes at least a transceiver 501 and a controller/processor 502.

The controller/processor 502 is configured to calculate HARQ-ACK information at least according to the physical downlink shared channel PDSCH repeatedly transmitted by the first transmission time unit;

The transceiver 501 is configured to send the HARQ-ACK information in the first feedback time unit;

Regarding how the transceiver 501 specifically sends the HARQ-ACK information, how the controller/processor 502 determines the PDSCH reception timing, and how the controller/processor 502 determines at least two feedback time units, refer to the description in the previous method embodiment.

The functions of the above-mentioned controller/processor 502 can be realized by circuits or by general-purpose hardware executing software codes. When the latter is adopted, the terminal may not only include the aforementioned transceiver 501 and controller/processor 502, but also The memory 503 is used to store program codes that can be executed by the controller/processor 502. When the controller/processor 502 executes the program code stored in the memory 503, the aforementioned functions are executed.

For example, the controller/processor 502 is further configured to determine that the feedback information is positive feedback ACK information;

The transceiver 501 is also configured to directly send the ACK information in the second feedback time unit.

In an implementation manner, the transceiver 501 is specifically configured to send the feedback information on the feedback information field corresponding to the first PDSCH reception timing in the first feedback time unit, and the second PDSCH reception timing corresponds to The feedback information is sent in the feedback information field; the first PDSCH reception timing is the first transmission time unit repeated transmission of the PDSCH reception timing corresponding to the PDSCH; the second PDSCH reception timing is the second transmission time unit repeated transmission Transmitting the PDSCH receiving timing corresponding to the PDSCH; the time domain position of the second transmission time unit in the feedback window of the first feedback time unit is before the first transmission time unit.

In an implementation manner, the controller/processor 502 is further configured to determine the first PDSCH reception timing and the second PDSCH reception timing based on multiple time domain resource allocation modes; one time domain resource The allocation method corresponds to the time domain resource for transmitting the PDSCH in one transmission time unit; the time domain resource for transmitting the PDSCH is the time domain resource for transmitting the PDSCH once or the time domain resource for repeatedly transmitting the PDSCH for multiple times.

In an implementation manner, the controller/processor 502 is further configured to transmit the PDSCH repeatedly in a transmission time unit according to the time domain resource of the first repeated transmission of the PDSCH in the transmission time unit. The last symbol, or the last symbol of the time domain resource of the last repeated transmission of the PDSCH in the transmission time unit, determines the receiving timing of the time domain resource allocation mode of the multiple repeated transmission of the PDSCH.

In an implementation manner, the controller/processor 502 is further configured to determine the at least two feedback time units based on one feedback timing or multiple feedback timings indicated by the downlink control information.

Further, the terminal may further include an encoder 5041, a modulator 5042, a demodulator 5044, and a decoder 5043. The encoder 5041 is configured to obtain the data/signaling to be sent by the first terminal to the network side device or other terminals, and encode the data/signaling. The modulator 5042 modulates the data/signaling encoded by the encoder 5041 and transmits it to the transceiver 501, which is then sent to the network side device or other terminal.

The demodulator 5044 is used to obtain and demodulate the data/signaling sent by the network side device or other terminal to the terminal. The decoder 5043 is used to decode the data/signaling demodulated by the demodulator 5044.

The aforementioned encoder 5041, modulator 5042, demodulator 5044, and decoder 5043 may be implemented by a synthesized modem processor 504. These units are processed according to the wireless access technology adopted by the wireless access network (for example, the access technology of LTE and other evolved systems).

The controller/processor 502 controls and manages the actions of the terminal, so that various devices cooperate to implement the steps executed by the terminal in the foregoing method embodiments. For example, the controller/processor 502 may be configured to determine HARQ-ACK information for repeated PDSCH transmission, and instruct the transceiver 501 to send to the network device on at least one of the first feedback time unit and the second feedback time unit HARQ-ACK information. As an example, the controller/processor 502 is used to support the terminal to execute content related to terminal processing in FIG. 13, FIG. 18, FIG. 16, FIG. 20, or FIG.

According to the foregoing method, please refer to FIG. 33. FIG. 33 is a schematic structural diagram of a network device according to an embodiment of the application, for example, a schematic structural diagram of a base station. As shown in Figure 33, the base station can be applied to the system shown in Figure 1 or Figure 2. The base station includes one or more radio frequency units, such as a remote radio unit (RRU) 601 and one or more baseband units (BBU) (also referred to as digital unit, DU) 602. The RRU 601 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 6011 and a radio frequency unit 6012. The RRU201 part is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals. For example, it is used to send the downlink control related parameters described in the above embodiments to the terminal equipment, or to receive the various uplink channels sent by the terminal . The BBU602 part is mainly used to perform baseband processing, control the base station, and so on. The RRU 601 and the BBU 602 may be physically set together, or may be physically separated, that is, a distributed base station.

The BBU 602 is the control center of the base station, and may also be called a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing unit) may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.

In an example, the BBU 602 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network with a single access standard (such as an LTE network), or can support wireless access networks with different access standards. Access Network. The BBU 602 further includes a memory 6021 and a processor 6022. The memory 6021 is used to store necessary instructions and data. For example, the memory 6021 stores the downlink control related parameters in the foregoing embodiment. The processor 6022 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment. The memory 6021 and the processor 6022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board. among them:

The transceiver is configured to receive the HARQ-ACK information sent by the terminal on the first feedback time unit; the first feedback time unit is at least two feedback times corresponding to multiple transmission time units that repeatedly transmit the physical downlink shared channel PDSCH Any one of the units;

A processor, configured to determine that the HARQ-ACK information is at least HARQ-ACK information corresponding to the PDSCH that is repeatedly transmitted by a first transmission time unit; the first transmission time unit is the feedback of the first feedback time unit In the window, the last transmission time unit of the PDSCH is repeatedly transmitted.

Regarding how the transceiver specifically receives the HARQ-ACK information, how the controller/processor determines the PDSCH reception timing, and how the controller/processor determines at least two feedback time units can refer to the description in the previous method embodiment. E.g:

In an implementation manner, the transceiver is further configured to receive positive feedback ACK information sent by the terminal on the second feedback time unit; the processor is further configured to determine that the ACK information is at least ACK information corresponding to the PDSCH repeatedly transmitted by the first transmission time unit.

In an embodiment, the transceiver is further configured to repeatedly transmit the PDSCH one or more times within one transmission time unit.

In an implementation manner, the transceiver is specifically configured to receive the feedback information sent by the terminal in the feedback information field corresponding to the first PDSCH reception timing in the first feedback time unit, and the second PDSCH reception timing The feedback information is received on the corresponding feedback information field; the first PDSCH reception time is the first transmission time unit to repeatedly transmit the PDSCH reception time corresponding to the PDSCH; the second PDSCH reception time is the second transmission time The unit repeatedly transmits the PDSCH reception timing corresponding to the PDSCH; the time domain position of the second transmission time unit in the feedback window of the first feedback time unit is before the first transmission time unit.

In an implementation manner, the processor is further configured to determine the first PDSCH reception timing and the second PDSCH reception timing based on multiple time domain resource allocation modes; one time domain resource allocation mode corresponds to one The time domain resource for transmitting the PDSCH in the transmission time unit; the time domain resource for transmitting the PDSCH is the time domain resource for transmitting the PDSCH once or the time domain resource for repeatedly transmitting the PDSCH for multiple times.

In an implementation manner, the processor is configured to transmit the PDSCH repeatedly for multiple times in a transmission time unit, according to the last symbol of the time domain resource of the PDSCH for the first repeated transmission in the transmission time unit, or The last symbol of the time domain resource for the last repeated transmission of the PDSCH in the transmission time unit determines the receiving timing of the time domain resource allocation mode.

In an implementation manner, the processor is further configured to determine the at least two feedback time units based on one feedback time sequence or multiple feedback time sequences indicated by the downlink control information.

According to the method provided in the embodiment of the present application, the embodiment of the present application also provides a communication system, which includes the aforementioned at least one terminal device and at least one network device. It should be understood that, in the embodiments of the present application, the processor may be a central processing unit (Central Processing Unit, referred to as "CPU"), and the processor may also be other general-purpose processors, digital signal processors (DSP), and dedicated integration Circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

The memory may include read-only memory and random access memory, and provides instructions and data to the processor. A part of the memory may also include a non-volatile random access memory.

In addition to the data bus, the bus system may also include a power bus, a control bus, and a status signal bus. However, for the sake of clarity, various buses are marked as bus systems in the figure.

In the implementation process, the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. In order to avoid repetition, it will not be described in detail here.

It should also be understood that the first, second, third, fourth, and various numerical numbers involved in this specification are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present invention.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present invention. The implementation process constitutes any limitation.

Those of ordinary skill in the art may realize that the various illustrative logical blocks and steps described in the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. achieve. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

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, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A feedback information processing method, characterized in that it comprises:

The terminal calculates feedback information at least according to the physical downlink shared channel PDSCH repeatedly transmitted by the first transmission time unit;

Sending, by the terminal, the feedback information on the first feedback time unit;

The first feedback time unit is any one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit the PDSCH;

The first transmission time unit is the last transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit.
The method of claim 1, wherein:

The at least two feedback time units include a second feedback time unit;

The time domain position of the first feedback time unit is before the time domain position of the second feedback time unit.
The method of claim 2, wherein the method further comprises:

The feedback information is positive feedback ACK information, and the terminal directly sends the ACK information in the second feedback time unit.
The method according to any one of claims 1 to 3, wherein:

Within one transmission time unit, the number of repeated transmissions of the PDSCH is one or more times.
The method according to any one of claims 1 to 4, wherein the sending of the feedback information by the terminal on the first feedback time unit comprises:

The terminal sends the feedback information in the feedback information field corresponding to the first PDSCH receiving opportunity in the first feedback time unit, and sends the feedback information in the feedback information field corresponding to the second PDSCH receiving opportunity;

The first PDSCH reception timing is the PDSCH reception timing corresponding to the PDSCH repeated transmission of the first transmission time unit;

The second PDSCH reception timing is a second transmission time unit to repeatedly transmit the PDSCH reception timing corresponding to the PDSCH;

The time domain position of the second transmission time unit in the feedback window of the first feedback time unit is before the first transmission time unit.
The method of claim 5, wherein:

The first PDSCH receiving timing and the second PDSCH receiving timing are determined based on multiple time domain resource allocation modes;

One of the time-domain resource allocation modes corresponds to the time-domain resource for transmitting PDSCH in a transmission time unit;

The time domain resource for transmitting the PDSCH is a time domain resource for transmitting the PDSCH once or a time domain resource for repeatedly transmitting the PDSCH for multiple times.
The method according to claim 6, wherein when the PDSCH is repeatedly transmitted multiple times within one transmission time unit,

Determine the multiple repeated transmissions according to the last symbol of the time domain resource for the first repeated transmission of the PDSCH in the transmission time unit, or the last symbol of the time domain resource for the last repeated transmission of the PDSCH in the transmission time unit The timing of the time domain resource allocation of PDSCH.
The method according to any one of claims 1 to 4, wherein the at least two feedback time units are determined based on one feedback time sequence or multiple feedback time sequences indicated by downlink control information.
The method according to claim 8, wherein the downlink control information indicates a feedback timing K 1 ; the feedback timing K 1 is the feedback timing of the third transmission time unit; the third transmission time unit corresponds to third feedback unit time, K 1 is the first time unit after the third transmission time unit;

The timing offset from the third transmission time unit to the fourth transmission time is K 2 ; the K 1 and K 2 are integers greater than or equal to 1; the fourth transmission time unit is a transmission that repeatedly transmits the PDSCH Time unit

The third transmission time unit is the time unit with the lowest position in the time domain among multiple transmission time units that repeatedly transmit the PDSCH; the feedback time unit corresponding to the fourth transmission time unit is: the third feedback time K 2 of the previous unit time units upstream; or

The third transmission time unit is the first time unit of the multiple transmission time units that repeatedly transmit the PDSCH; the feedback time unit corresponding to the fourth transmission time unit is: the first time after the third feedback time unit K 2 upstream time units.
The method according to claim 8, wherein the downlink control information indicates multiple feedback timings;

Among the multiple feedback timings, one of the feedback timings corresponds to one or more transmission time units for repeatedly transmitting the PDSCH.
The method according to claim 8, wherein the first transmission time unit set and the second transmission time unit set are obtained by dividing the multiple transmission time units that repeatedly transmit the PDSCH by using the sequence of time domain positions of;

The downlink control information indicates a feedback timing K 1 , the feedback timing K 1 is the feedback timing of the first transmission time unit set; the third feedback time unit corresponding to the first transmission time unit set is the second The K 1 time unit after the transmission time unit with the lowest position in the time domain in a transmission time unit set;

The timing set offset from the first transmission time unit set to the second transmission time unit set is K 2 ; the K 1 and K 2 are integers greater than or equal to 1;

The first set of transmission time units is the set of transmission time units with the highest position in the time domain among the at least two sets of transmission time units; the feedback time unit corresponding to the second transmission time unit set is: the third feedback time unit of K 2 time units after the uplink; or

The first transmission time unit set is the transmission time unit set with the lowest position in the time domain among the at least two transmission time unit sets; the feedback time unit corresponding to the second transmission time unit set is: the third feedback time unit K 2 before the first uplink time units.
The method according to claim 8, wherein the downlink control information indicates multiple feedback timings; one feedback timing corresponds to a transmission time unit set;

The at least two transmission time unit sets are obtained by dividing multiple transmission time units for repeated transmission of the PDSCH by using the sequence of time domain positions.
A feedback information processing method, characterized in that it comprises:

The network device receives the feedback information sent by the terminal on the first feedback time unit; the first feedback time unit is any one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit the physical downlink shared channel PDSCH ；

The network device determines that the feedback information is at least the feedback information corresponding to the PDSCH that is repeatedly transmitted by the first transmission time unit; the first transmission time unit is the feedback window of the first feedback time unit that is repeatedly transmitted The last transmission time unit of the PDSCH.
The method of claim 13, wherein:

The at least two feedback time units include a second feedback time unit;

The time domain position of the first feedback time unit is before the time domain position of the second feedback time unit.
The method according to claim 14, wherein the method further comprises:

The network device receives the positive feedback ACK information sent by the terminal in the second feedback time unit.
The method according to any one of claims 13 to 15, wherein:

Within one transmission time unit, the number of repeated transmissions of the PDSCH is one or more times.
The method according to any one of claims 13 to 16, wherein the receiving, by the network device, the feedback information sent by the terminal in the first feedback time unit, comprises:

The network device receives the feedback information on the feedback information field corresponding to the first PDSCH receiving opportunity, and the feedback information on the feedback information field corresponding to the second PDSCH receiving opportunity sent by the terminal in the first feedback time unit information;

The first PDSCH reception timing is the PDSCH reception timing corresponding to the PDSCH repeated transmission of the first transmission time unit;

The second PDSCH reception timing is a second transmission time unit to repeatedly transmit the PDSCH reception timing corresponding to the PDSCH;

The time domain position of the second transmission time unit in the feedback window of the first feedback time unit is before the first transmission time unit.
The method of claim 17, wherein:

The first PDSCH receiving timing and the second PDSCH receiving timing are determined based on multiple time domain resource allocation modes;

One of the time-domain resource allocation modes corresponds to the time-domain resource for transmitting PDSCH in a transmission time unit;

The time domain resource for transmitting the PDSCH is a time domain resource for transmitting the PDSCH once or a time domain resource for repeatedly transmitting the PDSCH for multiple times.
The method according to claim 18, wherein when the PDSCH is repeatedly transmitted multiple times within a transmission time unit, the method further comprises:

Determine the time domain resource allocation according to the last symbol of the time domain resource for the first repeated transmission of the PDSCH in the transmission time unit, or the last symbol of the time domain resource for the last repeated transmission of the PDSCH in the transmission time unit The timing of the reception.
The method according to any one of claims 13 to 16, wherein the method further comprises:

The network device sends downlink control information, where the downlink control information indicates one feedback timing sequence or multiple feedback timing sequences.
The method of claim 20, wherein the downlink control information indicates a feedback timing K 1 ; the feedback timing K 1 is a feedback timing of a third transmission time unit; and the third transmission time unit corresponds to third feedback unit time, K 1 is the first time unit after the third transmission time unit;

The timing offset from the third transmission time unit to the fourth transmission time is K 2 ; the K 1 and K 2 are integers greater than or equal to 1; the fourth transmission time unit is a transmission that repeatedly transmits the PDSCH Time unit

The third transmission time unit is the time unit with the lowest position in the time domain among multiple transmission time units that repeatedly transmit the PDSCH; the feedback time unit corresponding to the fourth transmission time unit is: the third feedback time K 2 of the previous unit time units upstream; or

The third transmission time unit is the first time unit of the multiple transmission time units that repeatedly transmit the PDSCH; the feedback time unit corresponding to the fourth transmission time unit is: the first time after the third feedback time unit K 2 upstream time units.
The method according to claim 20, wherein the downlink control information indicates multiple feedback timings;

Among the multiple feedback timings, one of the feedback timings corresponds to one or more transmission time units for repeatedly transmitting the PDSCH.
The method according to claim 20, wherein the at least two transmission time unit sets include a first transmission time unit set and a second transmission time unit set; the at least two transmission time unit sets use time domain positions The sequence is obtained by dividing multiple transmission time units for repeated transmission of the PDSCH;

The downlink control information indicates a feedback timing K 1 , the feedback timing K 1 is the feedback timing of the first transmission time unit set; the third feedback time unit corresponding to the first transmission time unit set is the first transmission K 1 units of time after the time set unit transmission time units after the time domain position of the innermost;

The timing set offset from the first transmission time unit set to the second transmission time unit set is K 2 ; the K 1 and K 2 are integers greater than or equal to 1;

The first set of transmission time units is the set of transmission time units with the highest position in the time domain among the at least two sets of transmission time units; the feedback time unit corresponding to the second transmission time unit set is: third feedback K 2 upstream of the time units after the time unit; or

The first transmission time unit set is the transmission time unit set with the lowest position in the time domain among the at least two transmission time unit sets; the feedback time unit corresponding to the second transmission time unit set is: the third feedback time unit K 2 before the first uplink time units.
The method according to claim 20, wherein the downlink control information indicates multiple feedback timings;

One said feedback sequence corresponds to one set of transmission time units;

The transmission time unit set is obtained by dividing multiple transmission time units that repeatedly transmit the PDSCH by using the sequence of time domain positions.
A terminal, characterized in that it comprises:

A processor, configured to calculate feedback information at least according to the physical downlink shared channel PDSCH repeatedly transmitted by the first transmission time unit;

A transceiver, configured to send the feedback information on the first feedback time unit;

The first feedback time unit is any one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit the PDSCH;

The first transmission time unit is the last transmission time unit in which the PDSCH is repeatedly transmitted in the feedback window of the first feedback time unit.
The terminal according to claim 25, wherein:

The at least two feedback time units include a second feedback time unit;

The time domain position of the first feedback time unit is before the time domain position of the second feedback time unit.
The terminal according to claim 26, wherein:

The processor is further configured to determine that the feedback information is positive feedback ACK information;

The transceiver is further configured to directly send the ACK information on the second feedback time unit.
The terminal according to any one of claims 25 to 27, wherein:

The transceiver is further configured to repeatedly receive the PDSCH one or more times within one transmission time unit.
The terminal according to any one of claims 25 to 28, wherein:

The transceiver is specifically configured to send the feedback information on the feedback information field corresponding to the first PDSCH receiving opportunity in the first feedback time unit, and send the feedback on the feedback information field corresponding to the second PDSCH receiving opportunity information;

The first PDSCH reception timing is the PDSCH reception timing corresponding to the PDSCH repeated transmission of the first transmission time unit;

The second PDSCH reception timing is a second transmission time unit to repeatedly transmit the PDSCH reception timing corresponding to the PDSCH;

The time domain position of the second transmission time unit in the feedback window of the first feedback time unit is before the first transmission time unit.
The terminal according to claim 29, wherein:

The processor is further configured to determine the first PDSCH reception timing and the second PDSCH reception timing based on multiple time domain resource allocation modes;

One of the time-domain resource allocation modes corresponds to the time-domain resource for transmitting PDSCH in a transmission time unit;

The time domain resource for transmitting the PDSCH is a time domain resource for transmitting the PDSCH once or a time domain resource for repeatedly transmitting the PDSCH for multiple times.
The terminal according to claim 30, wherein:

The processor is further configured to, when the PDSCH is repeatedly transmitted multiple times in a transmission time unit, according to the last symbol of the time domain resource for the first repeated transmission of the PDSCH in the transmission time unit, or in the transmission time unit The last symbol of the time domain resource of the PDSCH is repeatedly transmitted for the last time, and the receiving timing of the time domain resource allocation mode of the multiple repeated transmission of the PDSCH is determined.
The terminal according to any one of claims 25 to 28, wherein:

The processor is further configured to determine the at least two feedback time units based on one feedback timing or multiple feedback timings indicated by the downlink control information.
The terminal according to claim 32, wherein the downlink control information indicates a feedback timing K 1 ; the feedback timing K 1 is a feedback timing of a third transmission time unit; the third transmission time unit corresponds to third feedback unit time, K 1 is the first time unit after the third transmission time unit;

The timing offset from the third transmission time unit to the fourth transmission time is K 2 ; the K 1 and K 2 are integers greater than or equal to 1; the fourth transmission time unit is a transmission that repeatedly transmits the PDSCH Time unit

The third transmission time unit is the time unit with the lowest position in the time domain among multiple transmission time units that repeatedly transmit the PDSCH; the feedback time unit corresponding to the fourth transmission time unit is: the third feedback time K 2 of the previous unit time units upstream; or

The third transmission time unit is the first time unit of the multiple transmission time units that repeatedly transmit the PDSCH; the feedback time unit corresponding to the fourth transmission time unit is: the first time after the third feedback time unit K 2 upstream time units.
The terminal according to claim 32, wherein the downlink control information indicates multiple feedback timings;

Among the multiple feedback timings, one feedback timing corresponds to one or more transmission time units for repeatedly transmitting the PDSCH.
The terminal according to claim 32, wherein the first transmission time unit set and the second transmission time unit set are obtained by dividing multiple transmission time units that repeatedly transmit the PDSCH by using the sequence of time domain positions of;

The downlink control information indicates a feedback timing K 1 , the feedback timing K 1 is the feedback timing of the first transmission time unit set; the third feedback time unit corresponding to the first transmission time unit set is the second The K 1 time unit after the transmission time unit with the lowest position in the time domain in a transmission time unit set;

The timing set offset from the first transmission time unit set to the second transmission time unit set is K 2 ; the K 1 and K 2 are integers greater than or equal to 1;

The first set of transmission time units is the set of transmission time units with the highest position in the time domain among the at least two sets of transmission time units; the feedback time unit corresponding to the second transmission time unit set is: the third feedback time unit of K 2 time units after the uplink; or

The first transmission time unit set is the transmission time unit set with the lowest position in the time domain among the at least two transmission time unit sets; the feedback time unit corresponding to the second transmission time unit set is: the third feedback time unit K 2 before the first uplink time units.
The terminal according to claim 32, wherein the downlink control information indicates multiple feedback timings;

One feedback sequence corresponds to one transmission time unit set;

The transmission time unit set is obtained by dividing multiple transmission time units that repeatedly transmit the PDSCH by using the sequence of time domain positions.
A network device, characterized by comprising:

The transceiver is configured to receive the feedback information sent by the terminal on the first feedback time unit; the first feedback time unit is one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit the physical downlink shared channel PDSCH Any of

The processor is configured to determine that the feedback information is at least the feedback information corresponding to the PDSCH repeatedly transmitted by the first transmission time unit; the first transmission time unit is in the feedback window of the first feedback time unit, repeating The last transmission time unit of the PDSCH is transmitted.
The network device according to claim 37, wherein:

The at least two feedback time units include a second feedback time unit;

The time domain position of the first feedback time unit is before the time domain position of the second feedback time unit.
The network device of claim 38, wherein:

The transceiver is further configured to receive positive feedback ACK information sent by the terminal on the second feedback time unit.
The network device according to any one of claims 37 to 39, wherein:

The transceiver is further configured to repeatedly transmit the PDSCH one or more times within one transmission time unit.
The network device according to any one of claims 37 to 40, wherein:

The transceiver is specifically configured to receive the feedback information on the feedback information field corresponding to the first PDSCH receiving opportunity and the feedback information field corresponding to the second PDSCH receiving opportunity sent by the terminal in the first feedback time unit Said feedback information;

The first PDSCH reception timing is the PDSCH reception timing corresponding to the PDSCH repeated transmission of the first transmission time unit;

The second PDSCH reception timing is a second transmission time unit to repeatedly transmit the PDSCH reception timing corresponding to the PDSCH;

The time domain position of the second transmission time unit in the feedback window of the first feedback time unit is before the first transmission time unit.
The network device according to claim 41, wherein:

The processor is further configured to determine the first PDSCH reception timing and the second PDSCH reception timing based on multiple time domain resource allocation modes;

One of the time-domain resource allocation modes corresponds to the time-domain resource for transmitting PDSCH in a transmission time unit;

The time domain resource for transmitting the PDSCH is a time domain resource for transmitting the PDSCH once or a time domain resource for repeatedly transmitting the PDSCH for multiple times.
The network device of claim 42, wherein:

The processor is configured to transmit the PDSCH repeatedly in a transmission time unit according to the last symbol of the time domain resource for the first repeated transmission of the PDSCH in the transmission time unit, or the last symbol in the transmission time unit The last symbol of the time domain resource of the PDSCH is repeatedly transmitted once to determine the receiving timing of the time domain resource allocation mode.
The network device according to any one of claims 37 to 40, wherein:

The transceiver is also used to send downlink control information; the downlink control information indicates one feedback timing sequence or multiple feedback timings.
The network device of claim 44, wherein the downlink control information indicates a feedback timing K 1 ; the feedback timing K 1 is a feedback timing of a third transmission time unit; the third transmission time unit corresponds to third feedback unit time, K 1 is the first time unit after the third transmission time unit;

The timing offset from the third transmission time unit to the fourth transmission time is K 2 ; the K 1 and K 2 are integers greater than or equal to 1; the fourth transmission time unit is a transmission that repeatedly transmits the PDSCH Time unit

The third transmission time unit is the time unit with the lowest position in the time domain among multiple transmission time units that repeatedly transmit the PDSCH; the feedback time unit corresponding to the fourth transmission time unit is: the third feedback time K 2 of the previous unit time units upstream; or

The third transmission time unit is the first time unit of the multiple transmission time units that repeatedly transmit the PDSCH; the feedback time unit corresponding to the fourth transmission time unit is: the first time after the third feedback time unit K 2 upstream time units.
The network device according to claim 44, wherein the downlink control information indicates multiple feedback timings;

Among the multiple feedback timings, one of the feedback timings corresponds to one or more transmission time units for repeatedly transmitting the PDSCH.
The network device according to claim 44, wherein the at least two transmission time unit sets include a first transmission time unit set and a second transmission time unit set; the at least two transmission time unit sets use time domain positions Is obtained by dividing multiple transmission time units for repeated transmission of the PDSCH;

The downlink control information indicates a feedback timing K 1 , the feedback timing K 1 is the feedback timing of the first transmission time unit set; the third feedback time unit corresponding to the first transmission time unit set is the first transmission K 1 units of time after the time set unit transmission time units after the time domain position of the innermost;

The timing set offset from the first transmission time unit set to the second transmission time unit set is K 2 ; the K 1 and K 2 are integers greater than or equal to 1;

The first set of transmission time units is the set of transmission time units with the highest position in the time domain among the at least two sets of transmission time units; the feedback time unit corresponding to the second transmission time unit set is: third feedback K 2 upstream of the time units after the time unit; or

The first transmission time unit set is the transmission time unit set with the lowest position in the time domain among the at least two transmission time unit sets; the feedback time unit corresponding to the second transmission time unit set is: the third feedback time unit K 2 before the first uplink time units.
The network device according to claim 44, wherein the downlink control information indicates multiple feedback timings;

One feedback sequence corresponds to one transmission time unit set;

The transmission time unit set is obtained by dividing multiple transmission time units that repeatedly transmit the PDSCH by using the sequence of time domain positions.
A chip system, characterized by comprising: at least one processor and an interface;

The processor is configured to calculate feedback information at least according to the physical downlink shared channel PDSCH repeatedly transmitted by the first transmission time unit;

The interface is configured to output the feedback information, so as to send the feedback information on the first feedback time unit;

The first feedback time unit is any one of at least two feedback time units corresponding to multiple transmission time units that repeatedly transmit the PDSCH;

The first transmission time unit is the last transmission time unit that repeatedly transmits the PDSCH in the feedback window of the first feedback time unit.
The chip system of claim 49, wherein:

The at least two feedback time units include a second feedback time unit;

The time domain position of the first feedback time unit is before the time domain position of the second feedback time unit.
The chip system of claim 50, wherein:

The processor is further configured to determine that the feedback information is positive feedback ACK information;

The interface is also used to output the ACK information, so as to directly send the ACK information in the second feedback time unit.
The chip system according to any one of claims 49 to 51, wherein:

The processor is further configured to control to repeatedly receive the PDSCH one or more times within one transmission time unit.
The chip system according to any one of claims 49 to 52, wherein:

The processor is further configured to control, in the first feedback time unit, to send the feedback information on the feedback information field corresponding to the first PDSCH receiving opportunity, and to send the feedback information on the feedback information field corresponding to the second PDSCH receiving opportunity Feedback;

The first PDSCH reception timing is the PDSCH reception timing corresponding to the PDSCH repeated transmission of the first transmission time unit;

The second PDSCH reception timing is a second transmission time unit to repeatedly transmit the PDSCH reception timing corresponding to the PDSCH;

The time domain position of the second transmission time unit in the feedback window of the first feedback time unit is before the first transmission time unit.
The chip system of claim 53, wherein:

The processor is further configured to determine the first PDSCH reception timing and the second PDSCH reception timing based on multiple time domain resource allocation modes;

One of the time-domain resource allocation modes corresponds to the time-domain resource for transmitting PDSCH in a transmission time unit;

The time domain resource for transmitting the PDSCH is a time domain resource for transmitting the PDSCH once or a time domain resource for repeatedly transmitting the PDSCH for multiple times.
The chip system of claim 54, wherein:

The processor is further configured to, when the PDSCH is repeatedly transmitted multiple times in a transmission time unit, according to the last symbol of the time domain resource for the first repeated transmission of the PDSCH in the transmission time unit, or in the transmission time unit The last symbol of the time domain resource of the PDSCH is repeatedly transmitted for the last time, and the receiving timing of the time domain resource allocation mode of the multiple repeated transmission of the PDSCH is determined.
The chip system according to any one of claims 49 to 52, wherein:

The processor is further configured to determine the at least two feedback time units based on one feedback timing or multiple feedback timings indicated by the downlink control information.
A chip system, characterized by comprising: at least one processor and an interface;

The interface is used to input feedback information, where the feedback information is the feedback information sent by the terminal on the first feedback time unit; the first feedback time unit is multiple transmission time units that repeatedly transmit the physical downlink shared channel PDSCH Any one of at least two corresponding feedback time units;

The processor is configured to determine that the feedback information is at least the feedback information corresponding to the PDSCH repeatedly transmitted by a first transmission time unit; the first transmission time unit is in the feedback window of the first feedback time unit To repeatedly transmit the last transmission time unit of the PDSCH.
The chip system of claim 57, wherein:

The at least two feedback time units include a second feedback time unit;

The time domain position of the first feedback time unit is before the time domain position of the second feedback time unit.
The chip system according to claim 58, wherein:

The interface is also used to input positive feedback ACK information, where the positive feedback ACK information is the positive feedback ACK information sent by the terminal in the second feedback time unit.
The chip system according to any one of claims 57 to 59, wherein:

The processor is further configured to control the repeated transmission of the PDSCH one or more times within one transmission time unit.
The chip system according to any one of claims 57 to 60, wherein:

The interface is specifically used to input the first feedback information and the second feedback information;

The first feedback information is the feedback information sent by the terminal on the feedback information field corresponding to the first PDSCH receiving opportunity in the first feedback time unit; the second feedback information is the terminal’s feedback in the first feedback In the time unit, the feedback information sent on the feedback information field corresponding to the second PDSCH receiving opportunity;

The first PDSCH reception timing is the PDSCH reception timing corresponding to the PDSCH repeated transmission of the first transmission time unit;

The second PDSCH reception timing is a second transmission time unit to repeatedly transmit the PDSCH reception timing corresponding to the PDSCH;

The time domain position of the second transmission time unit in the feedback window of the first feedback time unit is before the first transmission time unit.
The chip system of claim 61, wherein:

The processor is further configured to determine the first PDSCH reception timing and the second PDSCH reception timing based on multiple time domain resource allocation modes;

One of the time-domain resource allocation modes corresponds to the time-domain resource for transmitting PDSCH in a transmission time unit;

The time domain resource for transmitting the PDSCH is a time domain resource for transmitting the PDSCH once or a time domain resource for repeatedly transmitting the PDSCH for multiple times.
The chip system of claim 62, wherein:

The processor is further configured to transmit the PDSCH repeatedly in a transmission time unit according to the last symbol of the time domain resource for the first repeated transmission of the PDSCH in the transmission time unit, or in the transmission time unit The last symbol of the time domain resource of the PDSCH is repeatedly transmitted for the last time, and the receiving timing of the time domain resource allocation manner is determined.
The chip system according to any one of claims 57 to 60, wherein:

The interface is also used to output downlink control information to send the downlink control information to the terminal; the downlink control information indicates one feedback timing sequence or multiple feedback timings.
A device, characterized by being used to implement the method according to any one of claims 1 to 12, or for implementing the method according to any one of claims 13 to 24.
A device, comprising a processor and a memory, the memory and the processor are coupled, and the processor is configured to execute the method according to any one of claims 1 to 12, or to execute claims 13 to 24 Any one of the methods.
A communication system, characterized by comprising the device according to any one of claims 25 to 36 and the device according to any one of claims 37 to 48.
A computer-readable storage medium, characterized by comprising instructions, which when run on a computer, causes the computer to execute the method according to any one of claims 1 to 12; or causes the computer to execute any one of claims 13 to 24 The method described in the item.
A computer program product, including instructions, which when run on a computer, causes the computer to execute the method according to any one of claims 1 to 12; or causes the computer to execute the method according to any one of claims 13 to 24.