CN113132073A

CN113132073A - Transmission method of control signaling and equipment thereof

Info

Publication number: CN113132073A
Application number: CN202010839894.9A
Authority: CN
Inventors: 张飒; 王轶; 付景兴; 孙霏菲
Original assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Current assignee: Beijing Samsung Telecom R&D Center; Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Priority date: 2019-12-30
Filing date: 2020-08-19
Publication date: 2021-07-16

Abstract

There is provided a method performed by a second class of transceiving nodes in a wireless communication system, comprising receiving first class data and/or first class control signalling from a first class of transceiving nodes; determining a HARQ-ACK codebook and a time unit for transmitting the HARQ-ACK codebook based on the first type data and/or the first type control signaling; and transmitting the HARQ-ACK codebook to the first type transceiving node in the determined time unit.

Description

Transmission method of control signaling and equipment thereof

Technical Field

The present application relates to a wireless communication technology, and in particular, to a transmission method of a control signaling and a device thereof.

Background

With the rapid development of the information industry, especially the growing demand from the mobile internet and internet of things (IoT), the future mobile communication technology is challenged with unprecedented challenges. As reported by the International Telecommunications Union (ITU) under ITU-R M [ imt. beam 2020. transfic ], it is expected that by 2020, mobile TRAFFIC will increase nearly 1000 times and the number of user equipment connections will also exceed 170 billion compared to 2010 (4G era), and as the vast number of IoT devices gradually permeates into mobile communication networks, the number of connected devices will be more dramatic. To address this unprecedented challenge, the communications industry and academia have developed extensive fifth-generation mobile communications technology (5G) research. Future 5G frameworks and overall goals are currently discussed in ITU's report ITU-R M [ imt.vision ], wherein the 5G demand landscape, application scenarios and various important performance indicators are specified. For the new requirements in 5G, ITU's report ITU-R M [ imt. user TECHNOLOGY TRENDS ] provides information related to the technical trend for 5G, aiming at solving significant problems of significant improvement of system throughput, consistency of user experience, scalability to support IoT, latency, energy efficiency, cost, network flexibility, support of emerging services, and flexible spectrum utilization. In 3GPP, work on the first phase of 5G is already in progress.

Disclosure of Invention

According to an aspect of the present invention, there is provided a method performed by a second type of transceiving node in a wireless communication system, comprising receiving a first type of data and/or a first type of control signaling from a first type of transceiving node; determining a hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook and a time unit for transmitting the HARQ-ACK codebook based on the first type of data and/or the first type of control signaling; and transmitting the HARQ-ACK codebook to the first type transceiving node in the determined time unit.

Optionally, the determining the HARQ-ACK codebook further includes converting values of allocation index fields expressed in different bit numbers in the first type of control signaling in different formats into values expressed in a uniform bit number, and determining the HARQ-ACK codebook based on the converted values of the allocation index fields.

Optionally, the uniform bit number is a maximum bit number or a minimum bit number of different bit numbers representing values of the allocation index field.

Optionally, the method further comprises determining the number of information bits of a HARQ-ACK codebook related to power control of a physical uplink control channel PUCCH based on the number of bits of an allocation index field received at the last listening time.

Optionally, the uniform number of bits is configured according to protocol specifications or higher layer signaling.

Optionally, the uniform number of bits is configured to represent a maximum number of bits or a minimum number of bits among different numbers of bits of the value of the allocation index field according to a protocol specification or a higher layer signaling.

Optionally, the method further comprises determining the information bit number of the HARQ-ACK codebook related to the power control of the PUCCH based on the unified bit number configured according to protocol specification or higher layer signaling.

Optionally, the uniform bit number is determined according to a priority of a HARQ-ACK codebook.

Optionally, if the priority of the HARQ-ACK codebook is high, determining the uniform bit number as a minimum bit number among different bit numbers representing values of the allocation index field; and if the priority of the HARQ-ACK codebook is low, determining the uniform bit number as the maximum bit number among different bit numbers representing values of the allocation index field.

Optionally, the determining the HARQ-ACK codebook further includes: and determining a set M of the counting time of the allocation index corresponding to the HARQ-ACK codebook sent in the determined time unit based on the first type of control signaling.

Optionally, in a case that a slot-based retransmission mechanism of the PDSCH is configured, a first parameter dynamically indicating the number of times of slot-based retransmission of the PDSCH is configured, and the set M of counting time instants is determined according to the first parameter or a maximum value in the set of first parameters.

Alternatively, in a case where the PDSCH slot-based retransmission mechanism is configured, a first parameter dynamically indicating the number of times the PDSCH slot-based retransmission is repeated and a second parameter semi-statically indicating the number of times the PDSCH slot-based retransmission is repeated are configured, and the set of counting times M is determined according to a maximum value among maximum values of the first parameter and the set of second parameters.

Optionally, in the case that the first type data is grouped and the HARQ-ACK codebook corresponds to more than one first type data group, the HARQ-ACK codebook is generated separately for each of the more than one first type data groups, and then the total HARQ-ACK codebook is generated.

Optionally, in the case that the first type data is grouped and the HARQ-ACK codebook corresponds to more than one first type data group, the information bit number of the HARQ-ACK codebook is determined for each of the more than one first type data groups, and then the information bit number of the total HARQ-ACK codebook is generated.

Optionally, in the case that the first type data is grouped and the HARQ-ACK codebook corresponds to more than one first type data group, a set M of allocation index count time instants corresponding to the HARQ-ACK codebook transmitted in the determined time unit is determined for each of the more than one first type data groups, respectively, and then the total HARQ-ACK codebook is generated.

According to an aspect of the present invention, there is provided a second type transceiving node in a wireless communication system, comprising: a transceiver configured to: receiving first type data and/or first type control signaling from a first type transceiving node; and transmitting the HARQ-ACK codebook to the first type transceiving node in a time unit; a controller configured to control overall operation of the second type of transceiving node, comprising: determining a HARQ-ACK codebook and the time unit for transmitting the HARQ-ACK codebook based on the first type data and/or the first type control signaling; and controlling the transceiver to transmit the HARQ-ACK codebook to the first type transceiving node in the determined time unit.

Optionally, the controller controls the second type of transceiving node to perform the method of claims 1-16.

According to an aspect of the invention, there is provided a method performed by a first type of transceiving node in a wireless communication system, comprising: sending first-class data and/or first-class control signaling to a second-class transceiving node; receiving a HARQ-ACK codebook from a second type of transceiving node in a time unit; wherein the HARQ-ACK codebook and the time unit are determined by the second type transceiving node based on the received first type data and/or first type control signaling.

According to an aspect of the present invention, there is provided a first type transceiving node in a wireless communication system, the first type transceiving node comprising: a transceiver configured to transmit first type data and/or first type control signaling to a second type transceiving node and to receive a HARQ-ACK codebook from the second type transceiving node in a time unit; and a controller configured to control overall operation of the first type of transceiving node, including: the control transceiver sends first type data and/or first type control signaling to the second type transceiving nodes and receives HARQ-ACK codebooks from the second type transceiving nodes in the time unit; wherein the HARQ-ACK codebook and the time unit are determined by the second type transceiving node based on the received first type data and/or first type control signaling.

Drawings

The foregoing and additional aspects and advantages of the present application will become more apparent and readily appreciated from the following description, taken in conjunction with the accompanying drawings, wherein:

fig. 1 shows a block diagram of a second type of transceiving node according to an embodiment of the present invention;

fig. 2 shows a flow diagram of a method performed by a UE according to one embodiment of the invention;

fig. 3 shows a flow chart for converting values of DAIs represented in different bit numbers in control signaling of different formats into values represented in a uniform bit number according to an embodiment of the present invention;

fig. 4 shows a flow chart for converting values of DAIs represented in different bit numbers in control signaling of different formats into values represented in a uniform bit number according to an embodiment of the present invention;

fig. 5 shows a block diagram of a transceiving node of a first type according to an embodiment of the present invention; and

fig. 6 shows a flow diagram of a method performed by a BS according to one embodiment of the invention.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

To support more flexible scheduling, the 3GPP decides to support variable Hybrid Automatic Repeat request-Acknowledgement (HARQ-ACK) feedback delay in 5G. In an existing Long Term Evolution (LTE) system, the Time for receiving HARQ-ACK uplink transmission from downlink data is fixed, for example, in a Frequency Division Duplex (FDD) system, a Time delay is 4 subframes, and in a Time Division Duplex (TDD) system, the Time delay is 4 subframes. And determining a HARQ-ACK feedback time delay for the corresponding downlink subframe according to the uplink and downlink configuration. In a 5G system, whether FDD or TDD, the uplink time unit for which HARQ-ACK can be fed back is variable for a certain downlink time unit (e.g., downlink timeslot, or downlink mini-timeslot). For example, the HARQ-ACK feedback delay may be dynamically indicated through physical layer signaling, or different HARQ-ACK delays may be determined according to different services or user capabilities and other factors.

In 5G, when the HARQ-ACK delay is variable, even in an FDD system, the HARQ-ACK to be fed back in one uplink time unit may be from downlink data of multiple downlink time units, and the number of HARQ-ACK downlink time units to be fed back is also variable, and the situation is often different for each UE. Compared with the existing TDD system, the starting position and the length of the bundling window for HARQ-ACK feedback are variable due to the variable HARQ-ACK time delay. In addition, in 5G, HARQ-ACK feedback based on a Code Block Group (CBG) may be used in addition to the HARQ-ACK feedback mechanism with Transport Block (TB) granularity in the conventional LTE system. When Physical Downlink Shared Channels (PDSCHs) of the two HARQ-ACK feedback mechanisms need to be fed back in the same Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH), how to design Downlink Control signaling so that the user equipment determines the HARQ-ACK codebook and how to design Uplink Control signaling to carry the HARQ-ACK are all urgent solutions.

Hereinafter, various embodiments of the present application will be described in detail with reference to the accompanying drawings.

Fig. 1 shows a block diagram of a transceiving node of a second type according to an embodiment of the present invention.

Referring to fig. 1, a second type of transceiving node 100 may comprise a transceiver 101 and a controller 102.

The transceiver 101 may be configured to receive first type data and/or first type control signaling from a first type transceiving node and to transmit a HARQ-ACK codebook to the first type transceiving node at a determined time unit.

The controller 102 may be a circuit application specific integrated circuit or at least one processor. The controller 102 may be configured to control the overall operation of the second type of transceiving node, as well as to control the second type of transceiving node to implement the method proposed in the present invention. In particular, the controller 102 may be configured to determine a HARQ-ACK codebook and a time unit for transmitting the HARQ-ACK codebook based on the first type of data and/or the first type of control signaling, and to control the transceiver 101 to transmit the HARQ-ACK codebook to the first type of transceiving node at the determined time unit.

By determining the HARQ-ACK codebook and the time unit for transmitting the HARQ-ACK codebook based on the first type data and/or the first type control signaling, the encoding and decoding of the HARQ-ACK codebook can be ensured to be performed according to a unified rule, and the reliability of the HARQ-ACK codebook is improved.

In the present invention, the first type of transceiver node may be a BS (Base Station), and the second type of transceiver node may be a UE (User Equipment). In the following examples, the BS is taken as an example (but not limited to) to describe the first type of transceiving node, and the UE is taken as an example (but not limited to) to describe the second type of transceiving node.

The first type of data may be data transmitted by the first type of transceiving node to the second type of transceiving node, and in the following example, the first type of data is exemplified by (but not limited to) Downlink data carried by a PDSCH (Physical Downlink Shared CHannel).

The first type of control signaling may be control signaling sent by the first type of transceiving node to the second type of transceiving node, and in the following examples, the first type of control signaling is described by taking downlink control signaling as an example (but not limited to). The Downlink Control signaling may be DCI (Downlink Control information) carried by a PDCCH (Physical Downlink Control CHannel) and/or Control signaling carried by a PDSCH (Physical Downlink Shared CHannel).

The HARQ-ACK codebook may be included in the second type of control signaling. The second type of control signaling may be control signaling sent by the second type of transceiving node to the first type of transceiving node, and in the following examples, the second type of control signaling is described by taking the uplink control signaling as an example (but not limited to). The Uplink Control signaling may be UCI (Uplink Control information) carried through a PUCCH (Physical Uplink Control CHannel) and/or Control signaling carried through a PUSCH (Physical Uplink Shared CHannel). The UCI may contain a HARQ-ACK codebook.

And the time unit is the time unit for sending the HARQ-ACK codebook by the second type of transceiving node. In the following examples, the time units are illustrated by taking the line time units as an example (but not limited to).

The time unit may be one or more slots (slots), one or more sub-slots (sub-slots), one or more OFDM (Orthogonal Frequency Division Multiplexing) symbols, one or more subframes (subframes).

Depending on the network type, the term "base station" or "BS" may refer to any component (or collection of components) configured to provide wireless access to a network, such as a Transmission Point (TP), a transmission-reception point (TRP), an enhanced base station (eNodeB or eNB), a 5G base station (gNB), a macrocell, a femtocell, a WiFi Access Point (AP), or other wirelessly enabled device. The base station may provide wireless access according to one or more wireless communication protocols, e.g., 5G 3GPP New radio interface/Access (NR), Long Term Evolution (LTE), LTE-advanced (LTE-A), High Speed Packet Access (HSPA), Wi-Fi 802.11a/b/G/n/ac, etc. For convenience, the terms "BS" and "TRP" are used interchangeably in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. Further, depending on the network type, the term "user equipment" or "UE" may refer to any component, such as a "mobile station," subscriber station, "" remote terminal, "" wireless terminal, "" reception point, "" user equipment, "or simply a" terminal. For convenience, the term "user equipment" or "UE" is used in this patent document to refer to a remote wireless device that wirelessly accesses a BS, whether the UE is a mobile device (such as a mobile phone or smartphone) or a commonly-considered stationary device (e.g., a desktop computer or vending machine).

Fig. 2 shows a flow diagram of a method performed by a UE according to one embodiment of the invention.

First, in step 201, the UE receives downlink data and/or downlink control signaling from the BS.

In step 202, the UE determines a HARQ-ACK codebook and an uplink time unit for transmitting the HARQ-ACK codebook based on downlink data and/or downlink control signaling.

Optionally, the uplink time unit for transmitting the HARQ-ACK codebook may be determined according to HARQ-ACK timing information included in downlink control signaling, and the HARQ-ACK timing information may be configured through dynamic indication and/or higher layer signaling.

In step 203, the UE transmits a HARQ-ACK codebook to the BS in the determined uplink time unit.

By determining the HARQ-ACK codebook and the uplink time unit for transmitting the HARQ-ACK codebook based on the downlink data and/or the downlink control signaling, the encoding and decoding of the HARQ-ACK codebook can be ensured to be performed according to a unified rule, and the reliability of the HARQ-ACK codebook is improved.

In the present invention, the allocation Index may be a DAI (Downlink Assignment Index). In the following example, the assignment index is illustrated by, but not limited to, a DAI.

According to an embodiment of the present invention, in step 202, the UE may further determine, based on the downlink control signaling, a set M of DAI count times corresponding to a HARQ-ACK codebook sent by the uplink time unit, where the DAI is a field included in the DCI.

The DAI count time may be a PDCCH monitoring time (PDCCH monitoring session), and in the following example, the DAI count time is described by taking the PDCCH monitoring time as an example (but not limited to).

In the case where the PDSCH slot-based retransmission mechanism is configured, a parameter dynamically indicating the number of times of PDSCH slot-based retransmission may be configured, so that the set M of counting instants is determined according to this parameter.

Specifically, in an embodiment, for a PDCCH that schedules a PDSCH and/or indicates a release of an SPS (Semi-Persistent Scheduling) PDSCH on a downlink active BWP (partial Bandwidth) of a serving cell, the set M of PDCCH monitoring times corresponding to the HARQ-ACK codebook transmitted in the uplink time unit n determined in step 202 is used for determining a set M of PDCCH monitoring times corresponding to the HARQ-ACK codebook transmitted in the uplink time unit n_cMay be based on the following parameters:

-a value of PDSCH-to-HARQ feedback, this parameter being used to indicate PDSCH reception and/or to indicate a release of SPS PDSCH to the uplink time unit offset of PUCCH transmitting uplink time unit n of HARQ-ACK codebook.

-slot offset K₀The value of (A) is as follows: theParameter K₀Indicated by a time domain resource allocation field in the DCI. The parameter is used to indicate a downlink time unit offset between the PDCCH and the PDSCH.

-pdsch-AggregationFactor: the parameter is a configurable parameter for semi-statically indicating the number of slot-based repeated transmissions of the PDSCH. Alternatively, a pdsch-aggregation factor is considered to be 1 if it is not configured.

-the value of RepNumR 16: the parameter is a configurable parameter for dynamically indicating the number of slot-based repeated transmissions of the PDSCH. This parameter is indicated by a time domain resource allocation field in the DCI. Alternatively, if the PDSCH slot-based repetition transmission mechanism is not configured or the RepNumR16 is not configured, the RepNumR16 is considered to be 1.

In another embodiment, for the PDCCH scheduling PDSCH and/or indicating SPS PDSCH release on downlink active BWP of the serving cell, the set M of PDCCH listening times corresponding to the HARQ-ACK codebook transmitted in the uplink time unit n determined in step 202_cMay be based on the following parameters:

-slot offset K₀The value of (A) is as follows: the parameter K₀Indicated by a time domain resource allocation field in the DCI. The parameter is used to indicate a downlink time unit offset between the PDCCH and the PDSCH.

-max { pdsch-AggregationFactor, max { ReNumR 16} }: the max { } function represents a max operation. The PDSCH-aggregation factor is a configurable parameter for semi-statically indicating the number of slot-based repeated transmissions of the PDSCH. Alternatively, a pdsch-aggregation factor is considered to be 1 if it is not configured. RepNumR16 is a configurable parameter for dynamically indicating the number of slot-based repeated transmissions of PDSCH. This parameter is indicated by a time domain resource allocation field in the DCI. Alternatively, if the PDSCH slot-based repetition transmission mechanism is not configured or the RepNumR16 is not configured, the RepNumR16 is considered to be 1.

-max { ReNumR 16 }: RepNumR16 is a configurable parameter for dynamically indicating the number of slot-based repeated transmissions of PDSCH. This parameter is indicated by a time domain resource allocation field in the DCI. Alternatively, if the PDSCH slot-based repetition transmission mechanism is not configured or the RepNumR16 is not configured, the RepNumR16 is considered to be 1.

-slot offset K₀The value of (A) is as follows: the parameter K₀Indicated by a time domain resource allocation field in the DCI. The parameter is used for indicating downlink between PDCCH and PDSCHThe time unit is offset.

-the value of RepNumR16 in DCI received by the UE: the parameter is a configurable parameter for dynamically indicating the number of slot-based repeated transmissions of the PDSCH. This parameter is indicated by a time domain resource allocation field in the DCI. Alternatively, if the PDSCH slot-based repetition transmission mechanism is not configured or the RepNumR16 is not configured, the RepNumR16 is considered to be 1.

It should be noted that, RepNumR16 is configured in the time domain resource allocation table by a higher layer signaling, RepNumR16 is optional, and if a certain row in the time domain resource allocation table indicated by the time domain resource allocation field in the DCI includes parameter RepNumR16, the PDSCH needs to be repeatedly transmitted in RepNumR16 slots.

The method provides for determining a set M of PDCCH monitoring moments corresponding to the HARQ-ACK codebook_cThe related parameters ensure that the UE and the base station ensure a set M of PDCCH monitoring time corresponding to the HARQ-ACK codebook when the DCI dynamically indicates the PDSCH to repeatedly transmit_cThe consistency of understanding is further ensured, so that the consistency of the UE and the base station on the size and the sequencing understanding of the HARQ-ACK codebook is further ensured, and the reliability of the HARQ-ACK codebook is improved.

In another embodiment, the UE is optionally configured with one or more activated SPS PDSCH configurations in a certain serving cell c. Optionally, the SPS PDSCH configuration i may configure a number of inter-slot retransmissions PDSCH-AggregationFactor in the SPS-Config, and different SPS PDSCH configurations may be different or the same as the number of inter-slot retransmissions PDSCH-AggregationFactor configured in the SPS-Config. When a certain SPS PDSCH configuration i is activated by a certain DCI format, for example, DCI format1_2 or DCI format1_ 1, if the SPS PDSCH configuration i configures a inter-slot repetition transmission frequency PDSCH-aggregation factor in the SPS-Config, the inter-slot repetition transmission frequency of the SPS PDSCH configuration i is the inter-slot repetition transmission frequency PDSCH-aggregation factor configured in the SPS-Config, otherwise, the inter-slot repetition transmission frequency of the SPS PDSCH configuration i is the inter-slot repetition transmission frequency PDSCH-aggregation factor configured in the PDSCH-Config. The PDSCH-aggregation factor in the PDSCH-Config may be configured to be 2,4 or 8, and defaults to a PDSCH-aggregation factor equal to 1 if not configured. The pdsch-aggregation factor in the SPS-Config can be configured to be 1,2,4 or 8.

The UE may receive DCI format1_0, and/or DCI format1_ 1, and/or DCI format1_ 2. The value ranges of K1 of different DCI formats may be different, where K1 is a time interval (PDSCH-to-HARQ _ feedback timing indicator) between the PDSCH and the PUCCH. The unit of K1 may be a time slot or a sub-time slot. The value of K1 in DCI format1_0 may be 1,2,3,4,5,6,7, 8. The value of K1 in DCI format1_0 may be configured by dl-DataToUL-ACK. The value of K1 in DCI format1_0 may be configured by dl-DataToUL-ACK-format 1_ 2. The value ranges of K0 for different DCI formats may be different, where K0 is the time interval between the PDSCH and the PDCCH. The unit of K0 may be a time slot or a sub-time slot. K0 is indicated by the time domain resource allocation field in the DCI.

The SCS (Sub-Carrier-Spacing) of PDCCH, and/or PDSCH, and/or PUCCH may be different or the same.

The CP (Cyclic prefix) of the PDCCH, and/or the PDSCH, and/or the PUCCH may be different or the same.

The UE may be configured with a parameter RepNumR16, which is a configurable parameter for dynamically indicating the number of slot-based repeated transmissions of the PDSCH. This parameter is indicated by a time domain resource allocation field in the DCI.

The uplink sub-slot configuration of the UE may include 7 sub-slots in 1 slot, where each sub-slot includes 2 OFDM symbols. The uplink sub-slot configuration of the UE may also include 2 sub-slots in 1 slot, where each sub-slot includes 7 OFDM symbols.

For PDCCH which schedules PDSCH and/or indicates SPS PDSCH release on downlink activated BWP of a serving cell, monitoring PDCCH corresponding to HARQ-ACK codebook sent in uplink time unit nSet of moments M_cMay be determined based on at least one of the following parameters:

-slot offset K₀The value of (A) is as follows: the parameter K₀Indicated by a time domain resource allocation field in DCI format1_0, and/or DCI format1_ 1, and/or DCI format1_ 2. The parameter is used to indicate a downlink time unit offset between the PDCCH and the PDSCH.

-value of PDSCH-aggregation factor, which parameter may be configured by SPS-Config, and/or PDSCH-Config.

-maximum value of PDSCH-aggregation factor, which parameter may be configured by SPS-Config, and/or PDSCH-Config. Alternatively, the maximum value may be specified by the protocol, for example 8.

-the value of RepNumR 16: the parameter is a configurable parameter for dynamically indicating the number of slot-based repeated transmissions of the PDSCH. This parameter is indicated by a time domain resource allocation field in DCI format1_0, and/or DCI format1_ 1, and/or DCI format1_ 2. Alternatively, if the PDSCH slot-based repetition transmission mechanism is not configured or the RepNumR16 is not configured, the RepNumR16 is considered to be 1.

-SCS of PDCCH, and/or PDSCH, and/or PUCCH.

-uplink sub-slot configuration of the UE

-CP configuration of PDCCH, and/or PDSCH, and/or PUCCH.

According to the foregoing method, a specific embodiment is that, for a PDCCH that schedules a PDSCH and/or indicates SPS PDSCH release on downlink active BWP of a serving cell, a set M of PDCCH monitoring times corresponding to a HARQ-ACK codebook transmitted in an uplink time unit n_cMay be determined based on the following parameters:

It should be noted that the uplink time unit in this embodiment may be an uplink timeslot and/or an uplink sub-timeslot.

The method provides for determining a set M of PDCCH monitoring moments corresponding to the HARQ-ACK codebook_cWhen the DCI dynamically indicates the PDSCH to repeat transmission and/or different SPS configures different PDSCH-aggregation factor parameters and PDCCH, and SCS of PDSCH and PUCCH are different, the relevant parameters ensure that the UE and the base station set M of PDCCH monitoring time corresponding to the HARQ-ACK codebook_cAnd the consistency of understanding is further ensured, so that the consistency of the UE and the base station on the size and the sequencing of the HARQ-ACK codebook is further ensured, and the reliability of the HARQ-ACK codebook is improved.

In another embodiment, for a PDCCH that schedules a PDSCH and/or indicates a SPS PDSCH release on a downlink active BWP of a serving cell, a time slot in which a PDCCH listening time corresponding to a HARQ-ACK codebook transmitted in an uplink time unit N is located may be N consecutive time slots_maxOne time slot, N_maxMay be defined by higher layer signaling configuration and or protocol. N is a radical of_maxMay be a specific value, or may be a value of PDSCH-to-HARQ _ feedback, and/or a slot offset K₀And/or a value of PDSCH-aggregation factor, and/or a value of ReNumR 16, and/or an SCS of PDCCH, and/or an SCS of PDSCH, and/or an SCS of PUCCH. Specifically, when SCS of PDCCH, PDSCH and PUCCH is the same, HARQ-ACK codebook transmitted in uplink time unit nThe time slot of the corresponding PDCCH monitoring time can be a downlink time slot N-N_max+1, …, n. The time slot of the PDCCH monitoring moment corresponding to the HARQ-ACK codebook sent by the uplink time unit N can also be a downlink time slot N-N_max,…,n-1。

The method adopts a simple mode to determine the set of the PDCCH monitoring time, and ensures that the UE and the base station determine the set M of the PDCCH monitoring time corresponding to the HARQ-ACK codebook_cAnd the consistency of understanding is further determined, so that the consistency of the size and the sequencing of the HARQ-ACK codebook understood by the UE and the base station is further determined, and the reliability of the HARQ-ACK codebook is improved.

It should be noted that, when the number of serving cells is greater than 1, the set M of PDCCH monitoring times corresponding to the HARQ-ACK codebook sent by the uplink time unit n is the set M of PDCCH monitoring times corresponding to the HARQ-ACK codebook sent by each serving cell in the uplink time unit n_cThe union of (a).

The HARQ-ACK codebook transmitted in the same uplink time unit may be determined according to a downlink allocation index field included in a downlink control signaling carried by a downlink physical control channel. The downlink control signaling may be DCI, and the downlink allocation index may be DAI. The DAI field contains at least one of a first type of DAI and a second type of DAI. The first type of DAI may be a C-DAI (Counter-DAI, cumulative DAI). The first type of DAI may indicate the following information: the relative sequence of PDSCH and/or SPS PDSCH release of the PDSCH and/or SPS PDSCH of the current scheduled downlink time unit in all the scheduled downlink time units corresponding to the uplink time unit, and the bit positions of HARQ-ACK bits released by PDSCH and/or SPS PDSCH of the current scheduled downlink time unit in an HARQ-ACK codebook. The second type of DAI may be T-DAI (Total-DAI, Total DAI). The second type of DAI may indicate a total number of all scheduled PDSCH and/or SPS PDSCH releases corresponding to the uplink time unit. In the following examples, C-DAI is taken as an example (but not limited to) to illustrate the first type of DAI, and T-DAI is taken as an example (but not limited to) to illustrate the second type of DAI.

The number of bits of the C-DAI and T-DAI is limited. For example, in the case where C-DAI or T-DAI is represented by 2 bits, it is possible toC-DAI or T-DAI greater than 4 is represented by the formulas in Table 1. Table 1 shows the DAI field and V_T-DAI,mOr V_C-DAI,c,mThe corresponding relationship of (1). V_T-DAI,mIs the value of T-DAI in the DCI received at PDCCH monitoring time m, V_C-DAI,c,mIs the value of C-DAI in the DCI for serving cell C received at PDCCH monitoring time instant m. V_T-DAI,mAnd V_C-DAI,c,mIs related to the number of bits of the DAI field in the DCI. MSB is the Most Significant Bit (Most Significant Bit), and LSB is the Least Significant Bit (Least Significant Bit).

TABLE 1

When C-DAI or T-DAI is 1, 5 or 9, as shown in Table 1, indicated by "00" in the DAI field, and V is expressed by the formula in Table 1_T-DAI,mOr V_C-DAI,c,mThe value of (d) is represented as "1". Y denotes the number of DCIs actually transmitted by the BS.

In the case where the C-DAI or T-DAI in the DCI is 1 bit, a value greater than 2 can be expressed by the formula in Table 2.

TABLE 2

DAI	V_T-DAI,mOr V_C-DAI,c,m	Y
			0	1	(Y-1)mod2+1＝1
1	2	(Y-1)mod2+1＝2

When the number of bits representing C-DAI or T-DAI is different in different DCI formats, the consistency of the base station and the UE for understanding the DAI information cannot be ensured. Therefore, different bit numbers need to be unified, and then the HARQ-ACK codebook is generated.

According to an embodiment of the present invention, the operation of determining the HARQ-ACK codebook in step 203 of fig. 2 may further include an operation of converting values of DAIs expressed in different numbers of bits in DCI in different formats into values expressed in a uniform number of bits, and determining the HARQ-ACK codebook based on the converted values of the DAIs

Fig. 3 shows a flowchart for converting values of DAIs expressed in different bit numbers in control signaling of different formats into values expressed in a uniform bit number according to an embodiment of the present invention.

In step 301, the bit number of the DAI field of each different DCI format in the set M of PDCCH monitoring time instances, i.e., the bit number of the C-DAI and/or the T-DAI, is determined.

In step 302, if the number of bits of the DAI field of each of the different DCI formats is different, the uniform number of bits of the DAI field in the different DCI formats is determined, and the values of the C-DAI and/or the T-DAI having the different number of bits are converted into values indicated by the uniform number of bits.

In step 303, a HARQ-ACK codebook is determined based on the converted value of DAI.

The method has the advantages that the number of bits of C-DAI or T-DAI in different DCI formats is unified, and then the HARQ-ACK codebook is determined, so that the consistency of the BS and the UE for understanding DAI information can be ensured, the encoding and decoding of the HARQ-ACK codebook are ensured to be carried out according to a unified rule, and the reliability of the HARQ-ACK codebook is improved.

According to an embodiment of the present invention, in the above step 302, the uniform number of bits may be set to the maximum number of different numbers of bits representing the value of the DAI, i.e., the C-DAI or T-DAI to be represented by different numbers of bitsThe value is converted into a value expressed by the maximum bit number among the different bit numbers. For example, the different bit numbers indicating the value of the C-DAI or T-DAI include the bit number N1 (e.g., 1 bit) and the bit number N2 (e.g., 2 bits). When the number of bits is N1, the number of DAI values that can be indicated is T1 — 2^N1(ii) a When the number of bits is N2, the number of values of DAI that can be indicated, T2, is 2^N2. When the number of bits Nx of the DAI field is less than N2, the DAI field may indicate a range of [1, 2 ]^Nx]An integer within the range. For example, when N2 is 2, the number of bits of the DAI field is 2, the value of the DAI is indicated according to table 1, and as shown in table 1, the range that the DAI field can indicate is 1,2,3, 4. When N1 is 1, the number of bits of the DAI field is 1, the value of the DAI is indicated according to table 2, and the range that the DAI field can indicate is 1, 2.

In addition, it should be noted that the method in the present invention is directed to the HARQ-ACK codebook generated for the same uplink time unit, and if there is no special description, all the parameters satisfy this assumption by default.

In the present embodiment, according to the following pseudo code 1, the value of DAI indicated by N1 bit numbers is converted into the value of DAI indicated by N2 bit numbers, and the total O contained in the HARQ-ACK codebook is determined based on the converted value of DAI_ACKAn information bit

In converting the DAI value indicated by the N1 bit number into the DAI value indicated by the N2 bit number, the number of PDCCHs (or DCIs) actually received by the UE also needs to be considered. In this embodiment, one PDSCH corresponds to 1-bit HARQ-ACK information, where T is 2^N2。

In the above-described pseudo code 1, the parameter k is updated according to the number of PDCCHs (or DCIs) actually received by the UE, and the DAI value indicated in N1 bits is converted into the DAI value indicated in N2 bits according to the parameter k and the DAI indicated in the DCI. The parameter V3 is used to indicate the C-DAI value, indicated by the N1 bits, at the end of the last cycle. For example, in the case where N1 is 1 and N2 is 2, for a DAI indicated in N1 bits, when k is 0, a 1-bit DAI may indicate 1,2,5,6 …; when k is 1, a 1-bit DAI may indicate 3,4,7,8 ….

For DAI indicated with N2 bits, the UE also needs to determine the actual DAI value according to the number of PDCCHs (or DCIs) actually received by the UE. In pseudo code 1, the parameter j is updated according to the number of PDCCHs (or DCIs) actually received by the UE, and the actual DAI value is determined according to the parameter j and the DAI indicated in the DCI. The parameter V1 is used to indicate the C-DAI value, indicated by the N2 bits, at the end of the last cycle.

Specifically, it is assumed that one serving cell exists in this example. C-DAI in DCI format I received by UE is 2 bits, C-DAI field in DCI format II is 1 bit, and both DCI format I and DCI format II have no T-DAI field. The first DCI format may be DCI format1_ 0/1_1/1_2, and the second DCI format may be DCI format1_ 0/1_1/1_ 2. There is no BWP switching in this embodiment. For the HARQ-ACK codebook fed back on uplink time unit 1, there are 3 PDCCH monitoring instants, i.e. M is 3.

When m is 0, the UE receives DCI 1 of one DCI format one and schedules one PDSCH1, where V is_C-DAI,c,m1. HARQ-ACK is fed back for the PDSCH1 in uplink time unit 1. According to pseudocode 1, the number of bits of the DAI field in the current DCI format is not N1 and is not satisfied (V)_C-DAI,c,m-1)mod2^N2-N1+ 1. ltoreq.V 3, whereby V3 ═ V (V)_C-DAI,c,m-1)mod2^N2-N1+1 ═ 1. Then, V1 ═ V_C-DAI,c,m＝1，V2＝V_C-DAI,c,m＝1，O^ACK＝T2·j+V2＝1。

Is HARQ-ACK information for PDSCH 1. V_s＝{0}，j＝0，k＝0。

When m is 1, the UE receives DCI 2 of one DCI format one and schedules one PDSCH2, where V is_C-DAI,c,m2. HARQ-ACK is fed back for this PDSCH2 in uplink time unit 1. According to pseudocode 1, the number of bits of the DAI field in the current DCI format is not N1 and is not satisfied (V)_C-DAI,c,m-1)mod2^N2-N1+ 1. ltoreq.V 3, whereby V3 ═ V (V)_C-DAI,c,m-1)mod2^N2-N1+1 ═ 2. Then, V1 ═ V_C-DAI,c,m＝2，V2＝V_C-DAI,c,m＝2，O^ACK＝T2·j+V2＝2。

For HARQ-ACK information for PDSCH2, V_s＝{0，1}，j＝0，k＝0。

When m is 2, the UE receives DCI 3 of DCI format two and schedules one PDSCH3, where V is_C-DAI,c,m1. HARQ-ACK is fed back for the PDSCH3 in uplink time unit 1. According to the pseudo code 1, the bit number of the DAI field in the current DCI format is N1, and V is satisfied_C-DAI,c,mV3, so that k ═ k +1) mod2^N2-N1＝1，V3＝V_C-DAI,c,m＝1，V_C-DAI,c,m＝V_C-DAI,c,m+k·2^N1＝3，V1＝V_C-DAI,c,m＝3，V2＝V_C-DAI,c,m＝3，O^ACK＝T2·j+V2＝3。

HARQ-ACK information for PDSCH3, V_s＝{0，1，2}，j＝0，k＝1。

In this embodiment, the DAI values expressed by different bit numbers are converted into the DAI value expressed by the maximum bit number of the different bit numbers, so that the consistency of the base station and the UE in understanding the DAI information can be ensured, the encoding and decoding of the HARQ-ACK codebook are ensured to be performed according to a uniform rule, and the reliability of the HARQ-ACK codebook is improved.

It should be noted that the scheme is also applicable to a scenario where one PDSCH corresponds to multi-bit HARQ-ACK feedback, and only the corresponding 1-bit HARQ-ACK information needs to be expanded into the multi-bit HARQ-ACK information, and other modes are not changed.

According to an embodiment of the present invention, by modifying the above pseudo code 1, it is also possible to set the uniform bit number to the minimum bit number of the different bit numbers representing the value of the DAI in the above step 302, thereby converting the value of the DAI represented by the different bit numbers into the value of the DAI represented by the minimum bit number of the different bit numbers, and then determining the HARQ-ACK codebook based on the converted value of the DAI.

In this embodiment, the DAI values represented by different bit numbers are converted into the DAI value represented by the minimum bit number of the different bit numbers, so that the consistency of the base station and the UE in understanding the DAI information can be ensured, the encoding and decoding of the HARQ-ACK codebook are ensured to be performed according to a uniform rule, and the reliability of the HARQ-ACK codebook is improved.

In addition, if the HARQ-ACK codebook is transmitted on PUCCH, the number of information bits n of the HARQ-ACK codebook related to PUCCH power control needs to be determined_HARQ-ACK. A total number of bits of UCI (Uplink Control Information) is 11, n or less_HARQ-ACKDetermined by the number of bits in the DAI field of the DCI received at the last listening time. And when the number of the DCIs received at the last monitoring moment is greater than 1, the bit number of the DAI domains in all the DCIs is the same. Specifically, n is n when all serving cells are not configured with CBG (Code Block Group) retransmission_HARQ-ACKDetermined by the following formula (1).

If N is_cells1, then

And C-DAI in the DCI received by the UE at the last monitoring time M in the set M. At this point N may be the number of bits of the C-DAI in the DCI.

If N is_cellsIf greater than 1, then

-if the UE is in MIf the DCI received at the last monitoring time m in the set does not contain the T-DAI field, the DCI does not contain the T-DAI field

The C-DAI in the DCI received by the UE at the last listening time M in the set M is shown, where N may be the number of bits of the C-DAI in the DCI. Otherwise

And the T-DAI in the DCI received by the UE at the last listening time M in the set M is shown, where N may be the bit number of the T-DAI in the DCI.

-if the UE does not receive DCI within the M-set

-U_DAI,cThe number of DCI for serving cell c received for the UE in the M-set. U if UE does not receive DCI of serving cell c in M set_DAI,c＝0。

-if one PDSCH contains 2 TBs and HARQ-ACK does not bundle (bundling) operation, then

Otherwise

When the HARQ-ACK does not do bundling,

the number of TBs received in the serving cell c at the PDCCH monitoring time m; when the HARQ-ACK does the bundling operation,

is the number of PDSCH received on serving cell c at PDCCH monitoring time m.

Including at PDCCH monitoring time mNumber of DCI received on serving cell c indicating SPS PDSCH release.

-N_SPS,cThe number of SPS PDSCH received for serving cell c.

Note that, in the case where the serving cell configures CBG retransmission, HARQ-ACK information bit n for counting PUCCH power is determined_HARQ-ACKThe same method can be used.

The embodiment determines the information bit number n of the HARQ-ACK codebook related to PUCCH power control according to the bit number of the DAI domain of DCI received at the last listening time_HARQ-ACK. The consistency of the base station and the UE for understanding the PUCCH transmitting power can be ensured, and the reliability of the HARQ-ACK codebook is improved.

According to an embodiment of the present invention, when the number of bits representing the C-DAI or the T-DAI is different in different DCI formats, a uniform number of bits may be configured through protocol specification or higher layer signaling in step 302, and then the value of the DAI represented by the different number of bits may be converted into the value of the DAI represented by the uniform number of bits, as shown in fig. 4.

Fig. 4 shows a flowchart for converting values of DAIs expressed in different bit numbers in control signaling of different formats into values expressed in a uniform bit number according to an embodiment of the present invention.

In step 401, the bit number of the DAI field of each different DCI format in the set M of PDCCH monitoring time instances, i.e., the bit number of the C-DAI and/or the T-DAI, is determined.

In step 402, if the number of bits of the DAI field of each of the different DCI formats is different, a uniform number of bits is configured through protocol specification or higher layer signaling, and the values of the C-DAI and/or T-DAI having the different number of bits are converted into values indicated by the uniform number of bits.

In step 403, a HARQ-ACK codebook is determined based on the converted value of DAI.

When the uniform bit number is configured by protocol specification or higher layer signaling, the uniform bit number is configured as the maximum bit number N2 among different bit numbers indicating the value of DAI according to the following pseudo code 2, and the uniform bit number is to be configured as different bit numbersThe expressed value of the DAI is converted into a value of the DAI expressed in the uniform number of bits, thereby determining the HARQ-ACK codebook. In this embodiment, one PDSCH corresponds to 1-bit HARQ-ACK information, where T is 2^N2。

Specifically, it is assumed that one serving cell exists in this example. C-DAI in DCI format I received by UE is 2 bits, C-DAI field in DCI format II is 1 bit, and both DCI format I and DCI format II have no T-DAI field. The first DCI format may be DCI format1_ 0/1_1/1_2, and the second DCI format may be DCI format1_ 0/1_1/1_ 2. For the HARQ-ACK codebook fed back on uplink time unit 1, there are 3 PDCCH monitoring instants, i.e. M is 3.

When m is 0, the UE receives DCI 1 of one DCI format one and schedules one PDSCH1, where V is_C-DAI,c,m1. HARQ-ACK is fed back for the PDSCH1 in uplink time unit 1. From pseudocode 2, we get V1 ═ 1, V2 ═ 1,

is HARQ-ACK information for PDSCH 1. V_S＝{0}，j＝0。

When m is 1, the UE receives DCI 2 of one DCI format one and schedules one PDSCH2, where V is_C-DAI,c,m2. HARQ-ACK is fed back for this PDSCH2 in uplink time unit 1. From the pseudo-code 2, we get V1 ═ 2, V2 ═ 2,

for HARQ-ACK information for PDSCH2, V_S＝{0，1}，j＝0。

When m is 2, the UE receives DCI 3 of DCI format two and schedules one PDSCH3, where V is_C-DAI,c,m1. In the uplink time unit 1 for PDSCH3 feeds back HARQ-ACK. According to pseudo-code 2, V1 is 1, V2 is 1,

HARQ-ACK information for PDSCH3, V_S1, j is 1. Accordingly, the UE considers that 2 DCI missing detections occur between PDSCH3 and PDSCH2, thereby

This example was used to determine n in equation (1)_HARQ-ACKWhen N is N2.

In this embodiment, a unified bit number is configured through protocol specification or high-level signaling, and the DAI values expressed by different bit numbers are converted into the DAI value expressed by the maximum bit number of the different bit numbers, so that the consistency of the base station and the UE in understanding the DAI information can be ensured, the encoding and decoding of the HARQ-ACK codebook are ensured to be performed according to a unified rule, and the reliability of the HARQ-ACK codebook is improved.

According to an embodiment of the invention, when the bit numbers representing C-DAI or T-DAI are different in different DCI formats, the unified bit number is configured to be the minimum bit number N1 in different bit numbers representing the value of DAI through protocol specification or high-layer signaling, and the value of DAI represented by the different bit numbers is converted into the value of DAI represented by the unified bit number, so that the HARQ-ACK codebook is determined.

When the number of bits Nx of a certain DAI field is greater than N1, the DAI field may indicate a range of [1, 2 ]^N1]An integer within the range. Nx-N1 MSBs are reserved bits.

In the case where the uniform bit number is configured by protocol specification or higher layer signaling, the uniform bit number is configured as the minimum bit number N1 among different bit numbers representing the value of the DAI by modifying the above pseudo code 2, and the value of the DAI represented by the different bit numbers is converted into the value of the DAI represented by the uniform bit number, thereby determining the HARQ-ACK codebook.

Specifically, the BS configures the bit number of the C-DAI in the DCI format1_2 to be 1, and the bit number of the C-DAI in the DCI format1_0 to be 2. The bit number of the C-DAI in the DCI format1_ 1 is 2. At this time, MSBs of C-DAIs in DCI format1_0 and DCI format1_ 1 are reserved bits. The unified bit number is configured to 1 through protocol specification or higher layer signaling, and the values of the DAI expressed in different bit numbers are converted into the values of the DAI expressed in the unified bit number.

This example was used to determine n in equation (1)_HARQ-ACKWhen N is N1.

In this embodiment, a unified bit number is configured through protocol specification or high-level signaling, and the DAI values represented by different bit numbers are converted into the DAI value represented by the minimum bit number of the different bit numbers, so that the consistency of the base station and the UE in understanding the DAI information can be ensured, the encoding and decoding of the HARQ-ACK codebook are ensured to be performed according to a unified rule, and the reliability of the HARQ-ACK codebook is improved.

According to an embodiment of the invention, when the bit numbers representing C-DAI or T-DAI are different in different DCI formats, the unified bit number can also be determined according to the priority of the HARQ-ACK codebook. For example, the priority of the HARQ-ACK codebook may be indicated by 1 bit in DCI, where 1 indicates high priority and 0 indicates low priority; or conversely, 0 indicates high priority and 1 indicates low priority. The number of unified bits corresponding to HARQ-ACK codebooks of different priorities may be different. For example, when DCI format1_2 is used only for scheduling a high-priority HARQ-ACK codebook corresponding to a PDSCH, the high-priority HARQ-ACK codebook is determined by using the number of bits of the DAI field as 1 as a uniform number of bits. Similarly, the number of bits of the DAI field is 2 as a uniform number of bits to determine a low priority HARQ-ACK codebook.

In this embodiment, a uniform bit number is determined according to the priority of the HARQ-ACK codebook, and then the DAI values represented by different bit numbers are converted into the DAI values represented by the uniform bit number, so that the consistency of the base station and the UE in understanding the DAI information can be ensured, the encoding and decoding of the HARQ-ACK codebook are performed according to a uniform rule, and the reliability of the HARQ-ACK codebook is improved.

It should be noted that, the above methods are all described by taking an example that one HARQ-ACK codebook corresponds to one PDSCH group, and the above methods are also applicable to a scenario that one HARQ-ACK codebook corresponds to multiple PDSCH groups. Taking 2 PDSCH groups as an example, PDSCH group 0 and PDSCH group 1. One of the above methods may be used to generate HARQ-ACK codebooks for PDSCH group 0 and PDSCH group 1, respectively, and then generate the total HARQ-ACK codebook. If the HARQ-ACK codebook is transmitted on the PUCCH, the number of HARQ-ACK information bits for counting the PUCCH power is also required to be determined for the PDSCH group 0 and the PDSCH group 1 respectively. The total number of HARQ-ACK information bits is the sum of the number of HARQ-ACK information bits of PDSCH group 0 and PDSCH group 1. Specifically, taking 2 PDSCH groups as an example, n of PDSCH group i is determined according to formula (1)_HARQ-ACK,i，i＝1,2。

When the DCI triggering the PDSCH group i simultaneously schedules the PDSCH of one PDSCH group i or indicates the SPS PDSCH release of the one PDSCH group i:

if N is_cells1, then

And the UE is the C-DAI in the DCI received at the last monitoring time M in the M set of the PDSCH group i. At this point N may be the number of bits of the C-DAI in the DCI.

If N is_cellsIf greater than 1, then

-if the UE does not contain a T-DAI field in the DCI received at the last listening instant M within the M-set of PDSCH group i

And the UE receives the C-DAI in the DCI at the last monitoring time M in the M set of the PDSCH group i, wherein N can be the bit number of the C-DAI in the DCI. Otherwise

The T-DAI in the DCI received by the UE at the last listening time M in the M set of PDSCH group i is shown, where N may be the bit number of the T-DAI in the DCI.

-if the UE does not receive DCI within the M-set of PDSCH group i

Under the condition that the DCI triggering the PDSCH group i simultaneously schedules the PDSCH of one non-PDSCH group i or indicates the SPS PDSCH release of the non-PDSCH group i:

-if the T-DAI field of PDSCH group i is contained in the DCI, then

Is the T-DAI of the PDSCH group i indicated in the DCI. N may be the number of bits of the T-DAI in the DCI.

-if the T-DAI field of PDSCH group i is not contained in the DCI, then

And determining according to the PDSCH of the scheduling PDSCH group i received at the last monitoring time M in the M set of the PDSCH group i or the C-DAI and/or the T-DAI of the DCI indicating the SPS PDSCH release of one PDSCH group i. N may be the number of bits of the C-DAI and/or T-DAI in the DCI.

It should be noted that if there are multiple DCI triggering PDSCH group i, n is determined according to the last received DCI triggering PDSCH group i_HARQ-ACK,i。

And finally, calculating the total HARQ-ACK information bit number according to the formula (2). Taking 2 PDSCH groups as an example, the value of i is 0, 1.

In another embodiment, when the dynamically scheduled HARQ-ACK information needs to be fed back together with HARQ-ACK information of SPS PDSCH without dynamic scheduling, the HARQ-ACK codebook may be divided into two parts, the first part is a dynamically scheduled PDSCH generated according to C-DAI and/or T-DAI in the dynamically scheduled DCI and/or a HARQ-ACK codebook instructing the SPS PDSCH to release DCI, and the second part is a HARQ-ACK codebook of an activated SPS PDSCH without dynamic scheduling DCI. The second portion is located behind the first portion. For example, 3GPP TS38.213 type-2 HARQ-ACK codebook.

After the base station transmits a DCI instructing the release of one SPS PDSCH, for example, SPS PDSCH #1, the base station does not continue to transmit data of SPS PDSCH #1 to the UE, and when the HARQ-ACK codebook includes the DCI instructing the release of the SPS PDSCH, the HARQ-ACK codebook may be generated in the following two ways.

The HARQ-ACK codebook of the activated SPS PDSCH without the dynamic scheduling DCI in the second part does not contain the HARQ-ACK information of the released SPS PDSCH in the first method.

In method two, the HARQ-ACK codebook of the activated SPS PDSCH without the dynamic scheduling DCI in the second part contains the HARQ-ACK information of the released SPS PDSCH. The UE needs to feed back HARQ-ACK information for the activated SPS PDSCH unless the UE has fed back HARQ-ACK information for DCI indicating the release of the SPS PDSCH and the HARQ-ACK information is ACK.

Note that the number of SPS PDSCHs in this embodiment may be 1 or multiple. When a plurality of activated SPS PDSCHs exist on a certain activated BWP, the SPS PDSCHs may overlap, and the base station selects the SPS PDSCH with the smallest number from the plurality of overlapping SPS PDSCHs for transmission. Similarly, the HARQ-ACK codebook may be generated in the following two ways.

In the first method, after the base station transmits the DCI indicating the release of one SPS PDSCH, the SPS PDSCH with the minimum number is selected from the activated multiple overlapped SPS PDSCHs again for transmission. The UE generates a HARQ-ACK codebook according to the activated SPS PDSCH.

In the second method, after the base station transmits the DCI instructing one of the SPS PDSCHs to release, the SPS PDSCH with the smallest number is not selected again from among the activated multiple overlapped SPS PDSCHs to transmit. After receiving the indication SPS PDSCH release DCI fed back by the UE, the base station selects the SPS PDSCH with the minimum number from the activated multiple overlapped SPS PDSCHs again for transmission. The UE generates the HARQ-ACK codebook according to the same rule. That is, the UE considers the SPS PDSCH configuration indicated by the SPS PDSCH release DCI as an activated configuration before feeding back an ACK to the SPS PDSCH release DCI. After feeding back ACK to the SPS PDSCH release indication DCI, the UE considers that the SPS PDSCH configuration indicated by the SPS PDSCH release indication DCI is a configuration that is not activated.

Compared with the first method, the second method can ensure the consistency of the UE and the base station for the size and the sequencing understanding of the HARQ-ACK codebook, and improves the reliability of the HARQ-ACK codebook. When the UE does not receive the DCI instructing the SPS PDSCH to release, the HARQ-ACK codebook generated according to the first method may not be the same size as the HARQ-ACK codebook expected to be received by the base station. And the HARQ-ACK codebook generated according to the second method may have the same size as the HARQ-ACK codebook expected to be received by the base station. The ordering of the bits in the HARQ-ACK codebook is also unaffected. The reliability of the HARQ-ACK codebook may be improved.

In another embodiment, the UE is configured with a dynamic HARQ-ACK codebook, such as a 3GPP38.213 type-2 codebook. The UE receives an uplink scheduling DCI and schedules a PUSCH, the PUCCH containing the HARQ-ACK is overlapped with the PUSCH in a time domain, and the UE sends the HARQ-ACK information on the PUSCH. In this embodiment, the second type of DAI is UL-DAI (Uplink DAI). The UE determines the size of the HARQ-ACK codebook according to the UL-DAI, the bit number indicating the UL-DAI in the DCI may not be consistent with the bit number of the C-DAI, and how to determine the size of the HARQ-ACK codebook is a problem to be solved.

The number of bits of C-DAI is

May be an integer. For example

May be 1, for example

May be 2.

The number of bits of UL-DAI is

May be an integer. For example

May be 2.

In the following pseudo code, j represents the total number of downlink DCIs fed back on the same PUCCH minus 1 and divided by T_DThe quotient of (a). For example, j may be determined from a pseudocode of a 3GPP38.213 type-2 codebook. Or j may also be determined from pseudo-code 1 and/or pseudo-code 2 in the present invention. For example,

is 1, T_DFor 2, the PDSCH scheduled by 7 downlink DCI received by the UE at 7 different PDCCH monitoring times is all fed back in the same uplink time slot, e.g. time slot n. The values of C-DAI are 1,2,1,2,1,2 and 1 in sequence. When j equals 3. Taking 1 DCI for 1-bit HARQ-ACK feedback as an example, the codebook size determined by the UE according to the C-DAI is 7.

Is 2 bits, the uplink DCI received by the UE indicates UL DAI as1. According to table 1, a UL DAI indication of 1 indicates that the actual DAI is 1 or 5 or 9 …. The base station actually sends 9 DCIs, and the UE misses the last 2 DCIs.

C-DAI can be converted to

The bit count is then compared to the UL DAI, and j is determined based on the converted C-DAI and UL DAI. Finally, the size of the HARQ-ACK codebook is determined according to the j value and the UL DAI, which can be converted to

The bits are counted. For example, the HARQ-ACK codebook size is determined according to the following pseudo code. Wherein V_temp2Is UL DAI, V_tempIs the last C-DAI received by the UE. O is^ACKIs the size of the HARQ-ACK codebook.

if the UE is not configured with HARQ-ACK spatial bundling parameter (e.g. HARQ-ACK-spatial bundling PUCCH) indicating PUCCH, and the UE is configured with maximum TB number parameter (e.g. maxNrofCodeWordsSchedulDCI) of one DCI scheduling to be 2 at least at downlink BWP of one serving cell

O^ACK＝2·(T_D·j+((V_temp2-1)mod T_D+1))

else

O^ACK＝T_D·j+((V_temp2-1)mod T_D+1)

end if

For example, when the number of UL DAI bits is 2 bits, the pseudo code may also be

O^ACK＝2·(T_D·j+((V_temp2-1)mod T_D+1))

else

O^ACK＝T_D·j+((V_temp-1)mod T_D+1)

end if

For another example, when the number of UL DAI bits is 2 bits, the pseudo code may also be

O^ACK＝2·(T_D·j+((V_temp-1)mod T_D+1))

else

O^ACK＝T_D·j+((V_temp2-1)mod T_D+1)

end if

Alternatively, j may be converted to

Bit counting, C-DAI conversion to

Bit count and then compare with UL DAI, j equals j +1 if the converted C-DAI is greater than UL DAI. Finally, the HARQ-ACK codebook size is determined based on the j value and UL DAI, e.g., as followsThe lower pseudo code determines the HARQ-ACK codebook size. Wherein V_temp2Is UL DAI, V_tempIs the last C-DAI received by the UE. O is^ACKIs the size of the HARQ-ACK codebook.

else

end if

O^ACK＝2·(4·j+V_temp2)

else

O^ACK＝4·j+V_temp2

end if

The method determines the HARQ-ACK codebook according to the UL DAI, can find at most 3 DCI missed detections, increases the reliability of the transmission of the HARQ-ACK codebook, and ensures the consistency of the UE and the base station for the understanding of the HARQ-ACK codebook. Meanwhile, the reliability of uplink data transmission can be improved, and the probability of downlink data retransmission is reduced, so that the transmission delay of downlink data can be reduced, and the frequency spectrum efficiency of the system is improved.

In another embodiment, the UE is configured with a dynamic HARQ-ACK codebook, such as a 3GPP38.213 type-2 codebook. And if the UE receives an uplink scheduling DCI and schedules a PUSCH, and the PUCCH containing the HARQ-ACK is overlapped with the PUSCH in a time domain, the UE sends the HARQ-ACK information on the PUSCH. At this time, the second type DAI may be UL-DAI. The UE determines the size of the HARQ-ACK codebook according to the UL-DAI.

And if the UE does not receive an uplink scheduling DCI and schedules a PUSCH and a PUCCH containing the HARQ-ACK to have overlap in a time domain, the UE sends the HARQ-ACK information on the PUCCH. The second type of DAI may be a T-DAI. And if the DCI received by the UE at the last PDCCH monitoring time contains the T-DAI, the UE determines the size of the HARQ-ACK codebook according to the T-DAI contained in the DCI received at the last PDCCH monitoring time. And if the DCI received by the UE at the last PDCCH monitoring time does not contain the T-DAI, the UE determines the size of the HARQ-ACK codebook according to the C-DAI contained in the last DCI received at the last PDCCH monitoring time. The number of bits indicating UL-DAI in DCI may not be the same as the number of bits indicating C-DAI, and how to determine the size of the HARQ-ACK codebook is a problem to be solved.

The number of bits of C-DAI is

May be an integer. For example

May be 1, for example

May be 2.

The number of bits of UL-DAI is

May be an integer. For example

May be 2.

In the following pseudo code, j represents that the total number of downlink DCIs for feeding back HARQ-ACK on the same PUCCH is subtracted by 1 and then is divided by T_DThe quotient of (a). For example, j may be determined from a pseudocode of a 3GPP38.213 type-2 codebook. Or j may also be determined from pseudo-code 1 and/or pseudo-code 2 in the present invention. Since the HARQ-ACK codebook may be determined based on the C-DAI, and/or the T-DAI, and/or the UL DAI, determining the HARQ-ACK codebook may require consideration of various conditions and the number of bits for each DAI.

The size of the HARQ-ACK codebook may be determined by converting each DAI into a uniform number of bits and then determining whether a missed detection occurs. For example, the maximum number of bits in each DAI is Nmax, each DAI may be represented by converting each DAI into Nmax bits, and then determining whether to miss detection and determining the HARQ-ACK codebook size. For another example, the minimum value of the number of bits in each DAI is Nmin, each DAI may be converted into Nmin bits to represent, and then whether to miss detection is determined and the HARQ-ACK codebook size is determined. For example, the second DAI converted to the same bit representation is less than the C-DAI, indicating that there is a DCI miss, and the j value needs to be updated.

For example, C-DAI is converted to

Bit count, second DAI to

Bit counting, e.g. by V_temp2Representing a second DAI. And determining whether the UE fails to detect and the size of the HARQ-ACK codebook according to the converted C-DAI and the second DAI. For example, the converted C-DAI and the second DAI are converted to

The bit count may be represented by j2, and the total number of downlink DCIs fed back on the same PUCCH is subtracted by 1 and then divided by

The quotient of (a). For example,

if the second DAI converted to the same bit representation is less than the C-DAI, indicating a DCI miss, the j2 value needs to be updated. For example, j2 ═ j2+ 1. The size of the HARQ-ACK codebook may be determined according to j2 and the second DAI. E.g. O^ACK＝4·j2+V_temp2。

V_tempIndicating the C-DAI contained in the last DCI received by the UE at the last PDCCH monitoring time. O is^ACKIndicating the size of the HARQ-ACK codebook.

For example, the size of the HARQ-ACK codebook may be determined according to the following pseudo-code after completing c and m cycles of 3GPP TS38.2139.1.3.1 generating the pseudo-code of the HARQ-ACK codebook.

else

end if

For another example, converting DAI by 2 bits, after completing c and m cycles of 3GPP TS38.2139.1.3.1 generating pseudo codes of HARQ-ACK codebook, the size of HARQ-ACK codebook may be determined from the following pseudo codes.

O^ACK＝2·(4·j2+V_temp2)

else

O^ACK＝4·j2+V_temp

end if

O^ACK＝2·(4·j+V_temp2)

else

O^ACK＝4·j+V_temp

end if

O^ACK＝2·(4·j+V_temp2)

else

O^ACK＝4·j+V_temp

end if

According to the method, each DAI is converted into the same bit according to the maximum value of the DAI proportion number, then the HARQ-ACK codebook is determined, 3 DCI missed detections can be found at most, the transmission reliability of the HARQ-ACK codebook is improved, and the understanding consistency of the UE and the base station for the HARQ-ACK codebook is ensured. Meanwhile, the reliability of uplink data transmission can be improved, and the probability of downlink data retransmission is reduced, so that the transmission delay of downlink data can be reduced, and the frequency spectrum efficiency of the system is improved.

In another embodiment, the UE is configured with a dynamic HARQ-ACK codebook, such as a 3GPP38.213 type-2 codebook. If the UE receives an uplink scheduling DCI and schedules a PUSCH, the PUCCH containing the HARQ-ACK is overlapped with the PUSCH in a time domain, and the UE sends the HARQ-ACK information on the PUSCH. At this time, the second type DAI may be UL-DAI. UE determines HARQ-ACK codebook size from UL-DAIIs small. And if the UE does not receive an uplink scheduling DCI and schedules a PUSCH and a PUCCH containing the HARQ-ACK to have overlap in time domain, the UE sends the HARQ-ACK information on the PUCCH. The second type of DAI may be a T-DAI. If the UE also receives the feedback of the HARQ-ACK of the SPS PDSCH on the PUSCH, the UE sets the HARQ-ACK codebook according to c and m cycles of pseudo codes of the 3GPP TS38.2139.1.3.1

Wherein V_tempRepresenting a second DAI. For example, the second DAI is a T-DAI.

And scheduling the UL DAI in the DCI for the uplink. For example,

the UL DAI in DCI format 0_1 is scheduled for uplink, and for another example,

the UL DAI in DCI format 0_2 is scheduled for uplink. Since the UL DAI cannot be indicated as 0, the HARQ-ACK codebook includes at least one bit of NACK and HARQ-ACK information of the SPS PDSCH. NACK in the HARQ-ACK codebook is an invalid bit. The optimization can be performed in the following manner.

For example, the protocol may be specified as follows

If the UE is not configured with CBG transmission parameters (e.g., parameters, PDSCH-codebook group transmission) and the UE is scheduled for PUSCH transmission by a DCI format containing UL DAI (e.g., DCI format 0_1, and/or DCI format 0_2), the value of the DAI field in this DCI format is 4, and the UE does not receive any DCI format scheduling PDSCH reception of any serving cell c at the PDCCH listening time or indicate SPS PDSCH release, the UE does not multiplex HARQ-ACK information containing dynamically scheduled PDSCH and/or indicating SPS PDSCH release in the PUSCH.

If the UE configures CBG transmission parameters (e.g., parameters, PDSCH-codebook group transmission) and the UE schedules a PUSCH transmission by one DCI format containing UL DAI (e.g., DCI format 0_1, and/or DCI format 0_2), the value of the first DAI field in this DCI format is 4, and the UE does not receive any DCI format scheduled PDSCH reception of any serving cell c associated with the first HARQ-ACK sub-codebook at the PDCCH listening time or indicates SPS PDSCH release, the UE does not multiplex the first HARQ-ACK sub-codebook containing dynamically scheduled PDSCH in the PUSCH and/or HARQ-ACK information indicating PDSCH release.

If the UE configures CBG transmission parameters (e.g., parameters, PDSCH-codebook group transmission) and the UE schedules a PUSCH transmission by one DCI format containing UL DAI (e.g., DCI format 0_1, and/or DCI format 0_2), the value of the second DAI field in this DCI format is 4, and the UE does not receive any DCI format scheduling PDSCH reception of any serving cell c associated with the second HARQ-ACK sub-codebook at the PDCCH listening time or indicates SPS PDSCH release, the UE does not multiplex the second HARQ-ACK sub-codebook containing dynamically scheduled PDSCH in the PUSCH and/or HARQ-ACK information indicating PDSCH release.

The UE schedules a PUSCH transmission by a DCI format (e.g., DCI format 0_1 and/or DCI format 0_2) including UL DAI, the value of the DAI field in this DCI format is 4 or the value of the first DAI field in this DCI format is 4 and the value of the second DAI field is 4, and the UE does not receive any DCI format scheduling PDSCH reception of any serving cell c at the PDCCH monitoring time or indicates SPS PDSCH release and the PUCCH where the UE receives SPS PDSCH transmission its HARQ-ACK overlaps with the PUSCH in the time domain, and the UE multiplexes HARQ-ACK information of the SPS PDSCH onto the PUSCH for transmission.

As another example, the protocol may be specified as follows

If the UE is not configured with CBG transmission parameters (e.g., parameters, PDSCH-codebook group scheduling), and the UE is scheduled with a PUSCH transmission by a DCI format containing UL DAI (e.g., DCI format 0_1, and/or DCI format 0_2), the value of the DAI field in this DCI format is 4, and the UE does not receive any DCI format scheduling PDSCH reception of any serving cell c at the PDCCH listening time or indicating SPS PDSCH release or secondary cell dormant, the UE does not multiplex HARQ-ACK information containing dynamically scheduled PDSCH in PUSCH and/or indicating SPS PDSCH release and/or secondary cell dormant.

If the UE configures CBG transmission parameters (e.g., parameters, PDSCH-codebook group transmission) and the UE schedules a PUSCH transmission by one DCI format (e.g., DCI format 0_1, and/or DCI format 0_2) containing UL DAI, the value of the first DAI field in this DCI format is 4, and the UE does not receive any DCI format scheduling PDSCH reception of any serving cell c associated with the first HARQ-ACK sub-codebook at the PDCCH listening time or indicating SPS PDSCH release or indicating secondary cell dormancy, the UE does not multiplex the first HARQ-ACK sub-codebook containing dynamically scheduled PDSCH in PUSCH and/or HARQ-ACK information indicating SPS PDSCH release and/or indicating cell dormancy.

If the UE configures CBG transmission parameters (e.g., parameters, PDSCH-codebook group transmission) and the UE schedules a PUSCH transmission by one DCI format (e.g., DCI format 0_1, and/or DCI format 0_2) including UL DAI, the value of the second DAI field in this DCI format is 4, and the UE does not receive any DCI format scheduling PDSCH reception of any serving cell c associated with the second HARQ-ACK sub-codebook at the PDCCH listening time, the UE does not multiplex the second HARQ-ACK sub-codebook including HARQ-ACK information of the dynamically scheduled PDSCH in the PUSCH.

The UE schedules a PUSCH transmission by a DCI format (e.g., DCI format 0_1 and/or DCI format 0_2) including UL DAI, the value of the DAI field in this DCI format is 4 or the value of the first DAI field in this DCI format is 4 and the value of the second DAI field is 4, and the UE does not receive any DCI format scheduling PDSCH reception of any serving cell c at the PDCCH monitoring time or indicates SPS release and the PUCCH where the UE receives SPS PDSCH transmission whose HARQ-ACK is overlapped with the PUSCH in the time domain, and multiplexes the HARQ-ACK information of the PDSCH generated according to TS 38.2139.1.2 onto the SPS for transmission.

The method specifies that the HARQ-ACK method of dynamic scheduling is not generated when the UL DAI is indicated to be 4, reduces the size of the HARQ-ACK codebook, improves the transmission reliability of the HARQ-ACK codebook, increases the available resources of uplink data and improves the transmission reliability of the uplink data.

In another embodiment, the UE is optionally configured with one or more activated SPS PDSCH configurations in a certain serving cell c. Optionally, the SPS PDSCH configuration i may configure a number of inter-slot retransmissions PDSCH-AggregationFactor in the SPS-Config, and different SPS PDSCH configurations may be different or the same as the number of inter-slot retransmissions PDSCH-AggregationFactor configured in the SPS-Config. When a certain SPS PDSCH configuration i is activated by a certain DCI format, for example, DCI format1_2 or DCI format1_ 1, if the SPS PDSCH configuration i configures a number of inter-slot repeated transmissions PDSCH-aggregate factor in the SPS-Config, the number of inter-slot repeated transmissions of the SPS PDSCH configuration i is the number of inter-slot repeated transmissions of the SPS-Config, or else, the number of inter-slot repeated transmissions of the SPS PDSCH configuration i is the number of inter-slot repeated transmissions of the PDSCH-Config, PDSCH-aggregate factor. The PDSCH-aggregation factor in the PDSCH-Config may be configured to be 2,4 or 8, and if not configured, the PDSCH-aggregation factor is considered equal to 1. The pdsch-aggregation factor in the SPS-Config can be configured to be 1,2,4 or 8.

In the case of a semi-static HARQ-ACK codebook, such as the 3GPP TS38.213 type-1 HARQ-ACK codebook, since the values of the PDSCH-aggregation factors configured in different SPS-configurations may be different, the values of the PDSCH-aggregation factors configured in the SPS PDSCH and the dynamically scheduled PDSCH may also be different. Generating the semi-static HARQ-ACK codebook requires considering all values of the pdsch-aggregation factor.

The number of times of repeated transmission between PDSCH slots to generate a semi-static HARQ-ACK codebook may be specified by a protocol or configured to a certain value by higher layer signaling. Specifically, the number of times of repeated transmission between PDSCH timeslots for generating the semi-static HARQ-ACK codebook may be equal to the maximum value of the following two values, or may be equal to one of the following two values

a) The maximum value of the values of all the configured pdsch-aggregationFactors in the SPS-Config.

b) And taking the value of the PDSCH-aggregation factor configured in the PDSCH-Config.

Note that if any of the above is not configured, the default value is 1.

Alternatively, the number of times of inter-slot retransmission of PDSCH generating the semi-static HARQ-ACK codebook may be a fixed value, which may be configured through higher layer signaling, or may be specified by a protocol, for example, 8.

For example, in the pseudo code of 3GPP TS38.213 type-1 HARQ-ACK codebook, the number of times of repeated transmission between PDSCH slots for generating semi-static HARQ-ACK codebook is used

And (4) showing.

if the UE is configured with tdd-UL-DL-configuration common, or tdd-UL-DL-configuration dedicated, for the slave time slot

To time slot

Each time slot of_rConfiguring at least one OFDM symbol in the obtained PDSCH time domain resource as an uplink, wherein K_1,kIs a set K₁The value of the k-th value of (c),

may be equal to the maximum of the two values,

The method specifies a method for generating a semi-static HARQ-ACK codebook under the condition that the inter-slot repeated transmission times PDSCH-aggregation factor are configured in one or more SPS-configs and/or the inter-slot repeated transmission times PDSCH-aggregation factor are configured in the PDSCH-Config, so that the UE can contain HARQ-ACK feedback information for the received PDSCH in the semi-static HARQ-ACK codebook under the condition of different configurations, and the reliability of the HARQ-ACK codebook is improved.

The number of times of repeated transmission between PDSCH slots to generate a semi-static HARQ-ACK codebook may be specified by a protocol or configured to a certain value by higher layer signaling. Specifically, the number of times of repeated transmission between PDSCH timeslots for generating the semi-static HARQ-ACK codebook may be equal to a maximum value of the following three values, or may be equal to one of the following three values

c) The maximum of all configured RepNumR16 values.

Note that if any of the above is not configured, the default value is 1.

And (4) showing.

To time slot

Each time slot of_rObtained byAt least one OFDM symbol in PDSCH time domain resources is configured as uplink, wherein K_1,kIs a set K₁The value of the k-th value of (c),

may be equal to the maximum of the three values,

c) The maximum of all configured RepNumR16 values.

The method provides a method for generating a semi-static HARQ-ACK codebook under the condition that inter-slot repeated transmission times PDSCH-aggregation factor are configured in one or more SPS-configs and/or inter-slot repeated transmission times PDSCH-aggregation factor are configured in a PDSCH-Config and/or the time domain resource allocation table is configured with ReNumR 16, so that the UE can contain HARQ-ACK feedback information for the received PDSCH in the semi-static HARQ-ACK codebook under different configurations, and the reliability of the HARQ-ACK codebook is improved.

In another embodiment, the UE may be configured with a parameter RepNumR16, which is a configurable parameter for dynamically indicating the number of slot-based repeated transmissions of the PDSCH. This parameter is indicated by a time domain resource allocation field in the DCI.

In the case of a semi-static HARQ-ACK codebook, such as the 3GPP TS38.213 type-1 HARQ-ACK codebook, the number of times of inter-slot retransmission of the PDSCH generating the semi-static HARQ-ACK codebook may be specified by a protocol, or configured to a certain value by higher layer signaling. Specifically, the number of times of repeated transmission between PDSCH timeslots for generating the semi-static HARQ-ACK codebook may be equal to the maximum value of the following two values, or may be equal to one of the following two values

a) And taking the value of the PDSCH-aggregation factor configured in the PDSCH-Config.

b) The maximum of all configured RepNumR16 values.

Note that if any of the above is not configured, the default value is 1.

And (4) showing.

To time slot

may be equal to the maximum of the two values,

b) The maximum of all configured RepNumR16 values.

The method provides a method for generating a semi-static HARQ-ACK codebook under the condition that a PDSCH-aggregation factor of the repeated transmission times among time slots is configured in a PDSCH-Config and/or a ReNumR 16 is configured in a time domain resource allocation table, ensures that UE can contain HARQ-ACK feedback information for the received PDSCH in the semi-static HARQ-ACK codebook under the condition of different configurations, and improves the reliability of the HARQ-ACK codebook.

In another embodiment, the UE is optionally configured with one or more activated SPS PDSCH configurations in a certain serving cell c. Optionally, a certain SPS PDSCH configuration i (i is a non-negative integer) may configure a number of inter-slot retransmissions PDSCH-aggregation factor in the SPS-Config, and different SPS PDSCH configurations may be the same or different. When a certain SPS PDSCH configuration i is activated by a certain DCI format, for example, DCI format1_2 or DCI format1_ 1, if the SPS PDSCH configuration i configures a number of inter-slot repeated transmissions PDSCH-aggregate factor in the SPS-Config, the number of inter-slot repeated transmissions of the SPS PDSCH configuration i is the number of inter-slot repeated transmissions of the SPS-Config, or else, the number of inter-slot repeated transmissions of the SPS PDSCH configuration i is the number of inter-slot repeated transmissions of the PDSCH-Config, PDSCH-aggregate factor. The PDSCH-aggregation factor in the PDSCH-Config may be configured to be 2,4, or 8, and defaults to 1 if not configured. The pdsch-aggregation factor in the SPS-Config may be configured as 1,2,4, or 8.

Optionally, the UE may also be configured with a parameter RepNumR16, which is a configurable parameter for dynamically indicating the number of slot-based repeated transmissions of the PDSCH. This parameter is indicated by a time domain resource allocation field in the DCI.

The number of times of repeated transmission between PDSCH slots to generate a semi-static HARQ-ACK codebook may be specified by a protocol or configured to a certain value through higher layer signaling. Specifically, the number of times of inter-slot retransmission of the PDSCH generating the semi-static HARQ-ACK codebook may be a fixed value, and this fixed value may be configured through higher layer signaling or specified through a protocol, for example, is 1.

And (4) showing.

To time slot

may be specified by the protocol as 1. Alternatively, the first and second electrodes may be,

it may also be configured to 1 by higher layer signaling.

In the case where a PDSCH slot-based repeat transmission is scheduled, the PDSCH may be a dynamically scheduled PDSCH or an SPS PDSCH, and the PDSCH-to-PUCCH slot interval K1 may be defined as the slot interval from the PUCCH determined by the last PDSCH repeat transmission instance according to higher layer signaling. The higher layer signaling may be Radio Resource Control (RRC) signaling, for example, semi-static uplink and downlink frame configuration signaling. The higher layer signaling here does not include physical layer signaling, e.g., DCI. The following description will be specifically made by taking SPS PDSCH #1 as an example (but not limited to). For example, the number of times of the activated SPS PDSCH #1 repeated transmission is 4, the first repeated transmission instance of the SPS PDSCH #1 is located in the time slot 0, the frame structure configured by the semi-static uplink and downlink frame structure configuration signaling is that the time slot 0 is full downlink, and the time slot 1 is full flexible symbols. Slots 2 and 3 are full uplink. Downlink data may be transmitted on downlink symbols and/or flexible symbols and may not be transmitted on uplink symbols. At this time, the last repeated transmission instance of SPS PDSCH #1, determined according to higher layer signaling, is located in slot 1. Since the time slot 2 and the time slot 3 are uplink time slots, downlink data cannot be transmitted. When a dynamic SFI (Slot Format Indicator) indicates that a Slot 1 is uplink, the UE does not receive the SPS PDSCH #1 in the Slot 1, and at this time, the UE determines a Slot of a PUCCH for transmitting HARQ-ACK of the SPS PDSCH #1 according to SPS PDSCH #1 and K1 that may be received in the Slot 1. For example, the slot of PUCCH for transmitting HARQ-ACK for SPS PDSCH #1 is 1+ K1 when the SCS of the uplink slot and the downlink slot is the same. The UE determines the location of SPS PDSCH #1 in the 3GPP TS38.213 type-1 HARQ-ACK codebook according to SPS PDSCH #1 that slot 1 may receive. Specifically, the position of SPS PDSCH #1 in the 3GPP TS38.213 type-1 HARQ-ACK codebook is determined by the position of the OFDM symbol of SPS PDSCH #1 that slot 1 may receive.

The method specifies a method for generating a semi-static HARQ-ACK codebook under the condition that the inter-slot repeated transmission times PDSCH-aggregation factor are configured in one or more SPS-configs and/or the inter-slot repeated transmission times PDSCH-aggregation factor are configured in the PDSCH-Config, so that the HARQ-ACK information fed back to the received PDSCH can be contained in the semi-static HARQ-ACK codebook under the condition of different configurations of the UE, and the reliability of the HARQ-ACK codebook is improved. The method avoids the influence of physical layer signaling missed detection (such as DCI missed detection) on the reliability of the semi-static HARQ-ACK codebook. Compared with the determination of the time slot of the PUCCH and the position in the semi-static HARQ-ACK codebook by the last PDSCH transmission instance actually received, the method can ensure the consistency of the UE and the base station for the codebook understanding, and ensure that the UE transmits the HARQ-ACK codebook at the time slot of the PUCCH expected by the base station.

In another embodiment, the UE is optionally configured with one or more activated SPS PDSCH configurations in a certain serving cell c. Optionally, a certain SPS PDSCH configuration i (i is a non-negative integer) may configure a number of inter-slot retransmissions PDSCH-aggregation factor in the SPS-Config, and different SPS PDSCH configurations may be the same or different.

The UE may also be configured with a parameter RepNumR16, which is a configurable parameter for dynamically indicating the number of slot-based repeated transmissions of the PDSCH. This parameter is indicated by a time domain resource allocation field in the DCI.

When a certain SPS PDSCH configuration i is activated by a certain DCI format, for example, DCI format1_2 or DCI format1_ 1, the number of repeated transmissions between slots of the SPS PDSCH configuration i is the value of RepNumR16 indicated in the activation DCI.

When a certain SPS PDSCH configuration i is activated by another DCI format, for example, DCI format1_0, the number of repeated transmissions between slots of SPS PDSCH configuration i is 1.

In the case of a semi-static HARQ-ACK codebook, such as the 3GPP TS38.213 type-1 HARQ-ACK codebook, the number of times of inter-slot retransmission of the PDSCH that generates the semi-static HARQ-ACK codebook may be specified by a protocol or configured to a value by higher layer signaling. Specifically, the number of times of inter-slot retransmission of the PDSCH generating the semi-static HARQ-ACK codebook may be a fixed value, and this fixed value may be configured through higher layer signaling or specified through a protocol, for example, is 1.

And (4) showing.

To time slot

it may also be configured to 1 by higher layer signaling.

The method provides a method for generating the semi-static HARQ-ACK codebook when the ReNumR 16 for dynamically indicating the time slot-based repeated transmission times of the PDSCH is configured, so that the HARQ-ACK information fed back to the received PDSCH can be contained in the semi-static HARQ-ACK codebook under the condition of different configurations of the UE, and the reliability of the HARQ-ACK codebook is improved. The method avoids the influence of physical layer signaling missed detection (such as DCI missed detection) on the reliability of the semi-static HARQ-ACK codebook. Compared with the determination of the time slot of the PUCCH and the position in the semi-static HARQ-ACK codebook by the last PDSCH transmission instance actually received, the method can ensure the consistency of the UE and the base station for the codebook understanding, and ensure that the UE transmits the HARQ-ACK codebook at the time slot of the PUCCH expected by the base station.

In the case of a semi-static HARQ-ACK codebook, such as a 3GPP TS38.213 type-1 HARQ-ACK codebook, generating the semi-static HARQ-ACK codebook requires considering all values of RepNumR 16.

The number of times of repeated transmission between PDSCH slots to generate a semi-static HARQ-ACK codebook may be specified by a protocol or configured to a certain value through higher layer signaling. Specifically, the number of times of repeated transmission between PDSCH slots for generating the semi-static HARQ-ACK codebook may be equal to the maximum value among all configured values of RepNumR 16.

Alternatively, the number of times of repeated transmission between PDSCH slots for generating the semi-static HARQ-ACK codebook may be a fixed value, which may be configured through higher layer signaling or specified by a protocol, for example, 16.

For example, in pseudo code of 3GPP TS38.213 type-1 HARQ-ACK codebook, PDSCH inter-slot repeat transmission for generating semi-static HARQ-ACK codebookFor a plurality of times

And (4) showing.

To time slot

may be equal to the maximum of the values of all configured RepNumR 16.

The method provides a method for generating a semi-static HARQ-ACK codebook under the condition that inter-slot repeated transmission times PDSCH-aggregation factor are configured in one or more SPS-configs and/or inter-slot repeated transmission times PDSCH-aggregation factor are configured in a PDSCH-Config and/or the time domain resource allocation table is configured with ReNumR 16, so that the semi-static HARQ-ACK codebook can contain HARQ-ACK information fed back to the received PDSCH under the condition of different configurations of the UE, and the reliability of the HARQ-ACK codebook is improved.

Optionally, the UE is configured with one or more activated SPS PDSCH configurations in a certain serving cell c. Optionally, the SPS PDSCH configuration i (i is a non-negative integer) may configure a number of inter-slot retransmissions PDSCH-aggregation factor in the SPS-Config, and different SPS PDSCH configurations may be different or the same as the number of inter-slot retransmissions PDSCH-aggregation factor configured in the SPS-Config. When a certain SPS PDSCH configuration i is activated by a certain DCI format, for example, DCI format1_2 or DCI format1_ 1, if the SPS PDSCH configuration i configures a number of inter-slot repeated transmissions PDSCH-aggregate factor in the SPS-Config, the number of inter-slot repeated transmissions of the SPS PDSCH configuration i is the number of inter-slot repeated transmissions PDSCH-aggregate factor configured in the SPS-Config, otherwise, the number of inter-slot repeated transmissions of the SPS PDSCH configuration i is reprnur 16 indicated in the activated DCI.

Or when RepNumR16 is indicated in the activation DCI, the number of repeated transmissions between the slots of the SPS PDSCH configuration i is RepNumR16 indicated in the activation DCI; otherwise, when the ReNumR 16 is not indicated in the activation DCI and the inter-slot repeat transmission frequency PDSCH-aggregation factor is configured in the SPS-Config by the SPS PDSCH configuration i, the inter-slot repeat transmission frequency of the SPS PDSCH configuration i is the inter-slot repeat transmission frequency PDSCH-aggregation factor configured in the SPS-Config.

The pdsch-aggregation factor in the SPS-Config may be configured as 1,2,4, or 8.

The number of times of repeated transmission between PDSCH slots to generate a semi-static HARQ-ACK codebook may be specified by a protocol or configured to a certain value through higher layer signaling. Specifically, the number of times of repeated transmission between PDSCH timeslots for generating the semi-static HARQ-ACK codebook may be equal to a maximum value of the following two values, or may be equal to one of the following two values:

b) The maximum of the values of all configured RepNumR 16.

Note that if any of the above is not configured, the default value is 1.

Alternatively, the number of times of repeated transmission between PDSCH slots for generating the semi-static HARQ-ACK codebook may be a fixed value, which may be configured through higher layer signaling or specified by a protocol, for example, 8.

And (4) showing.

To time slot

can be equal to the maximum of the two following values:

b) The maximum of the values of all configured RepNumR 16.

It should be noted that, in all embodiments of the present invention, values of the RepNumR16 configured in different DCI formats may be different, and a maximum value of the values of all configured RepNumR16 may be a maximum value of the values of the RepNumR16 configured in all DCI formats.

In another embodiment, PUCCH transmission using PUCCH format 2 or PUCCH format 3 or PUCCH format 4, for UCI, O, less than or equal to 11 bits_ACK+O_SR+O_CSILess than or equal to 11, n is determined_HARQ-ACK(i)，n_HARQ-ACK(i) The HARQ-ACK information bits for power control on time unit i are transmitted for PUCCH. Wherein, O^ACKIs the number of bits of the HARQ-ACK codebook, O_SR(i) Information bits which are SR; o is_CSI(i) Is the information bit of the CSI. In this case, the number of bits of the UCI is greater than 2 and equal to or less than 11, and the PUCCH is RM (reed-muller) encoded. When O is present_SR(i) And O_CSI(i) When all are 0, if n_HARQ-ACK(i) 0 results in the existing formula for calculating power taking the logarithm of the negative number. Wherein, O_SR(i) Information bits which are SR; o is_CSI(i) Is the information bit of the CSI. N is_HARQ-ACK(i) The number of bits may be different from that of the HARQ-ACK codebookThe same is true. For example, when the UE is configured to receive 3 active SPS PDSCHs and the 3 SPS PDSCHs are cancelled by the dynamic SFI, the HARQ-ACK codebook size is 3 bits and all NACK, and n is NACK for the SPS PDSCH_HARQ-ACK(i) Is the number of SPS PDSCH received by the UE, which is 0 at this time. To solve this problem, the following method is possible.

Mode one, is n_HARQ-ACK(i) A minimum value N0 is set, N0 may be greater than 0, e.g., N0 ═ 1. In particular, the method comprises the following steps of,

n_HARQ-ACK(i)＝max{n_HARQ-ACK(i)，N0}

wherein max { } denotes taking the maximum value for the parameter in { }. Or, if n_HARQ-ACK(i) When n is equal to 0, n_HARQ-ACK(i)＝N0。

Mode two, when O_SR(i) And O_CSI(i) All are 0, or O_SR(i)+O_CSI(i) When it is 0, it is n_HARQ-ACK(i) A minimum value N0 is set, N0 may be greater than 0, e.g., N0 ═ 1. In particular, the method comprises the following steps of,

n_HARQ-ACK(i)＝max{n_HARQ-ACK(i)，N0}

or, if n_HARQ-ACK(i)、O_SR(i) And O_CSI(i) Are all 0, then n_HARQ-ACK(i)＝N0。

Or, if n_HARQ-ACK(i)+O_SR(i)+O_CSI(i) Is 0, then n_HARQ-ACK(i)＝N0。

Mode III, is Δ_TF,b,f,c(i) Setting a minimum value M0, Δ_TF,b,f,c(i) Is the PUCCH transmission power adjustment element for uplink active BWP for primary carrier c. In particular, the method comprises the following steps of,

Δ_TF,b,f,c(i)＝max{Δ_TF,b,f,c(i)，M0}

or, if Δ_TF,b,f,c(i) When the value is 0, then_TF,b,f,c(i)n_HARQ-ACK(i)＝M0。

Mode four, when n is_HARQ-ACK(i)，O_SR(i) And O_CSI(i) When both are 0, or n_HARQ-ACK(i)+O_SR(i)+O_CSI(i) When 0, PUCCH is not transmitted.

Mode five, calculate n_HARQ-ACK(i) The SPS PDSCH is considered received even though it is cancelled by the dynamic SFI or dynamic scheduling DCI. Or calculating n_HARQ-ACK(i) When N is present_SPS,cIndicates the number of SPS PDSCH receptions, N_SPS,cThe number of SPS PDSCHs which are activated by the UE in the serving cell c and are configured on the same PUCCH for feeding back HARQ-ACK information can be redefined.

This embodiment gives a solution to n_HARQ-ACK(i) Various methods of power control at 0. The first method, the third method, the fourth method and the fifth method are simple to implement, and have little influence on the protocol. The second method further improves the efficiency of power control compared with the first method when O_SR(i) And O_CSI(i) When not all are 0, n_HARQ-ACK(i) May be 0, which may reduce the UE transmit power. The minimum value in this embodiment may be specified by a protocol or may be configured by higher layer signaling.

In another embodiment, a certain DCI format may indicate that the secondary cell is dormant. PUCCH transmission using PUCCH format 2 or PUCCH format 3 or PUCCH format 4 for UCI, O, of less than or equal to 11 bits if 3GPP TS38.213 type-2 HARQ-ACK codebook is transmitted on PUCCH_ACK+O_SR+O_CSILess than or equal to 11, n is determined_HARQ-ACK，n_HARQ-ACKIs the information bit number of the HARQ-ACK codebook related to PUCCH power control. Wherein, O^ACKIs the number of bits of the HARQ-ACK codebook, O_SR(i) Information bits which are SR; o is_CSI(i) Is the information bit of the CSI. N, in case all serving cells are not configured with CBG (Code Block Group) retransmission_HARQ-ACKDetermined by the following equation.

Wherein

Is the number of bits of the C-DAI.

If is

Then

Is the value of C-DAI in the last DCI format detected by the UE within M PDCCH monitoring time instants, which may schedule PDSCH reception or indicate SPS PDSCH release of any serving cell C or indicate secondary cell dormancy of any serving cell C.

-if there is a change in the output power,

then

-if the UE does not contain a T-DAI field in the DCI format received at the last monitoring time within the M PDCCH monitoring times and there is at least one DCI format that can schedule PDSCH reception or indicate SPS PDSCH release for any serving cell c, then

And the C-DAI in the DCI format received by the UE at the last monitoring time within the M PDCCH monitoring times is obtained.

-if the UE includes a T-DAI field in the DCI format received at the last monitoring time within the M PDCCH monitoring times and at least one DCI format can schedule PDSCH reception or indicate SPS PDSCH release for any serving cell c or indicate secondary cell dormancy for any serving cell c, then

And the UE is the T-DAI in the DCI received at the last monitoring moment M in the M PDCCH monitoring moments.

-if the UE does not receive DCI format scheduled PDSCH reception within M PDCCH monitoring instants or indicates SPS PDSCH release of any serving cell c or indicates secondary cell dormancy of any serving cell c, then

-U_DAI,cThe number of DCI formats received by the UE in M PDCCH monitoring times on the serving cell c is the number of DCI formats that may schedule PDSCH reception or indicate SPS PDSCH release of any serving cell c or indicate secondary cell dormancy of any serving cell c. If the UE does not receive any DCI format scheduling PDSCH reception on the serving cell c within M PDCCH monitoring time instants or indicates SPS PDSCH release or indicates any auxiliary cell to sleep, U_DAI,c＝0。

-if maxnrof codewordsscheduled bydci is configured to 2 and parameter harq-ACK-SpatialBundlingPUCCH is not configured

Otherwise

-if the parameter harq-ACK-SpatialBundlingPUCCH is not configured, then

May be the number of TBs scheduled by one DCI format received on serving cell c at PDCCH monitoring time m; if the parameter harq-ACK-spatialBundlingPUCCH is configured, then

May be the number of PDSCHs scheduled by one DCI format received on the serving cell c at PDCCH monitoring time m.

May be the number of DCI formats received on the serving cell c at PDCCH monitoring time m indicating SPS PDSCH release or the number of DCI formats indicating secondary cell dormancy.

-N_SPS,cAnd feeding back the number of SPS PDSCHs of the HARQ-ACK information on the same PUCCH for the UE received on the serving cell c.

If there is a serving cell configured with CBG retransmission, for each PDSCH group,

n_HARQ-ACK＝n_HARQ-ACK,TB+n_HARQ-ACK,CBG

wherein

If is

Then

Is the value of C-DAI in the last DCI format detected by the UE within M PDCCH monitoring instants, which can schedule CBG-based PDSCH reception.

If is

Then

Is the value of T-DAI in the last DCI format detected by the UE within M PDCCH monitoring instants, which can schedule CBG-based PDSCH reception.

-if the UE does not receive DCI format scheduling CBG based PDSCH reception within M PDCCH monitoring instants

-

The number of DCI formats received by the UE in M PDCCH monitoring times in serving cell c may schedule CBG-based PDSCH reception. If the UE does not receive any DCI format scheduling CBG-based PDSCH reception on the serving cell c within M PDCCH monitoring time instants, then

-

For the number of CBGs in the CBG-based PDSCH scheduled by one DCI format received on the serving cell c at PDCCH monitoring time m, the scheduled PDSCH feeds back HARQ-ACK information on the same PUCCH.

This embodiment calculates n_HARQ-ACKAnd counting DCI formats indicating the dormancy of the auxiliary cell, improving the PUCCH power control performance, ensuring the understanding consistency of the base station and the UE for the PUCCH transmitting power, and improving the reliability of the HARQ-ACK codebook.

It should be noted that, in the following description,

for the configured downlink carrier number, the present embodiment determines the condition "if

"can be replaced by" if all downlink DCI formats do not contain T-DAI field "; judgment condition "if

"may be replaced with" if at least one downlink DCI format includes a T-DAI field "or" otherwise ". Alternatively, the judgment condition "if" in the present embodiment

"can be replaced by" if all downlink DCI formats do not contain T-DAI field of scheduled PDSCH group "; judgment condition "if

"may be replaced with" if there is at least one T-DAI field containing the scheduled PDSCH group in the downlink DCI format "or" otherwise ". Alternatively, the judgment condition "if" in the present embodiment

"can be replaced with" if

When NFI-TotalDAI-Included-r16 is not configured and UE does not configure CORESETPoolIndex, or UE configures CORESETPoolIndex and the value of CORESETPoolIndex is the same for all CORESETs, or UE does not configure ACKNACKFeedback mode as JointFeedback "; judgment condition "if

"can be replaced with" else ". It should be noted that the above determination condition is not only applicable to the TB HARQ-ACK sub-codebook, but also optionally applicable to the CBG HARQ-ACK sub-codebook.

It can also be determined in the following manner,

-if the UE does not receive a DCI lattice within M PDCCH monitoring instants(ii) the scheduled PDSCH receives or indicates SPS PDSCH release of any serving cell c or indicates secondary cell dormancy of any serving cell c, then

It can also be determined in the following manner,

-if none of the DCI formats received by the UE at the last monitoring time within the M PDCCH monitoring times contains the T-DAI field of the scheduled PDSCH group and at least one DCI format can schedule PDSCH reception or indicate SPS PDSCH release for any serving cell c, then

-if the UE includes the T-DAI field of the scheduled PDSCH group in the DCI format received at the last monitoring time of the M PDCCH monitoring times and there is at least one DCI format that can schedule PDSCH reception or indicate SPS PDSCH release for any serving cell c or indicate secondary cell dormancy for any serving cell c, then the UE shall transmit the PDCCH in the T-DAI field of the scheduled PDSCH group

And the UE is the T-DAI of the scheduled PDSCH group in the DCI received at the last monitoring moment M in the M PDCCH monitoring moments.

Can also be achieved byIt is determined in the following manner that,

if is

Then

-if there is a change in the output power,

then

And scheduling the T-DAI of the PDSCH group in the DCI received by the UE at the last monitoring time M in the M PDCCH monitoring times.

By modifying the judgment conditions, the method can be ensured under the condition of different configurations

The accuracy of the values improves the PUCCH power control performance, ensures the consistency of the base station and the UE in understanding the PUCCH transmitting power, and improves the reliability of the HARQ-ACK codebook. When in use

In time, if there are 2 PDSCH groups, DCI format1_ 1 may only contain T-DAIs for non-scheduled PDSCH groups. The scheme makes clear that the T-DAI is the T-DAI of the dispatching PDSCH group when the power is calculated. If the power of the scheduled group is calculated using the T-DAI of the non-scheduled PDSCH group, the actual transmitted power may be larger or smaller than the power that should be transmitted, thereby affecting PUCCH decoding or causing additional power consumption. When in use

Meanwhile, the UE may also receive 2 DCIs at a PDCCH monitoring time of a serving cell, and at this time, the DCI format may include a T-DAI field, and the T-DAI is used to calculate n_HARQ-ACKCan ensure that the base station and the UE are opposite to n_HARQ-ACKThe consistency of understanding avoids the condition that the UE transmitting power is too low due to the missing detection of DCI, and improves the reliability of PUCCH.

In another embodiment, for an enhanced dynamic HARQ-ACK codebook, e.g., a 3GPP TS38.213 type-2 HARQ-ACK group codebook, the HARQ-ACK codebook may contain HARQ-ACK information for two PDSCH groups.

If the UE configures pdsch-HARQ-ACK-Codebook (enhanced dynamic-r 16), the UE determines HARQ-ACK information multiplexed in one PUCCH transmission time unit according to the following procedure.

Set g to the value of the PDSCH group index field of the last DCI format that provides the g value and indicates one PUCCH transmission time unit.

Setting i (g) to a PUCCH transmission time unit indicating multiplexing of HARQ-ACK information. K is set to the value of the PDSCH-to-HARQ feedback timing field and if this field exists, the g value is provided in one DCI format.

-if the DCI format does not include the PDSCH-to-HARQ feedback timing field, setting k to the value provided by dl-DataToUL-ACK

Set h (g) to the value of the first new feedback indication field in the last DCI format that provides the value of g.

H is to be^(g+1)mod2(g) Set to the value of the second new feedback indication field in the last DCI format that provides the g value.

Will be provided with

Set to the value of the T-DAI in the last DCI format indicating group (g +1) mod2, which provides the g value.

If g is 1 and the UE detects a DCI format without PDSCH group index field when a PDCCH is received, and the PDCCH is received after the PDCCH carrying the last DCI format is received, the last DCI format provides g value and the two DCI formats indicate the same PUCCH transmission time unit, setting

Set q to the value of the field of the number of triggered PDSCH groups in the last DCI format that provides the g value.

Generating first HARQ-ACK information for PUCCH transmission time unit i (g) according to the method of 3GPP TS 38.2139.1.3.1, wherein,

-the first HARQ-ACK information provides the same g value, h (g) value only for detected DCI formats and does not provide g value and h (g) value but is associated with one and the same g value, h (g) value for detected DCI formats and at least one DCI format provides a k value indicating a slot. It should be noted that the slot may be a slot in which a PUCCH transmission time unit i (g) is located.

-at least one DCI format provides an h (g) value.

-m-0 corresponds to one PDCCH monitoring instant, where the UE detects one DCI format providing or associated with a g value, which is the first PDCCH monitoring instant after the PDCCH monitoring instant at which the UE detects another DCI format providing a different h (g) value. Or, m-0 corresponds to a PDCCH monitoring time, where the UE detects one DCI format providing or associated with a g value, which is the first PDCCH monitoring time after the PDCCH monitoring time at which the UE detects another DCI format providing or associated with a different value of h (g).

According to the method of 3GPP TS 38.2139.1.3.1, the first HARQ-ACK information generated by PUCCH transmission time unit i (g) in one slot does not include the HARQ-ACK information generated for SPS PDSCH reception.

If it is not

Or h^(g+1)mod2(g) H ((g +1) mod2), second HARQ-ACK information of PUCCH transmission time unit i ((g +1) mod2) is generated according to the method of 3GPP TS 38.2139.1.3.1, wherein,

the second HARQ-ACK information provides the same (g +1) mod2 value, h ((g +1) mod2) value only for the detected DCI formats, and provides no (g +1) mod2 value and h ((g +1) mod2) value but associates one same (g +1) mod2 value, h ((g +1) mod2) value for the detected DCI formats,

optionally, at least one DCI format provides a value of h ((g +1) mod2) or

-m-0 corresponds to one PDCCH monitoring time instant, where the UE detects one DCI format providing a (g +1) mod2 value or associated with a (g +1) mod2 value, which is the first PDCCH monitoring time instant after the PDCCH monitoring time instant at which the UE detects another DCI format providing a different value of h ((g +1) mod 2). Alternatively, m-0 corresponds to one PDCCH monitoring time instant, where the UE detects one DCI format providing a (g +1) mod2 value or associated with a (g +1) mod2 value, which is the first PDCCH monitoring time instant after the PDCCH monitoring time instant at which the UE detects another DCI format providing or associated with a different value of h ((g +1) mod 2).

-PUCCH transmission time unit i ((g +1) mod2) is the last PUCCH transmission time unit for multiplexing the second HARQ-ACK information and is not later than PUCCH transmission time unit i (g)

If is

After completing the c and m cycles of the second HARQ-ACK codebook generation pseudo code in 3GPP TS 38.2139.1.3.1, the settings for the two HARQ-ACK sub-codebooks (if any) are set

Or setting the HARQ-ACK sub-codebook for the current scheduling

Setting for two HARQ-ACK subcodebooks respectively

Of two HARQ-ACK subcodebooks at this time

May be different from each other.

If it is not

And h is^(g+1)mod2(g) H ((g +1) mod2), setting M to 0, generating second HARQ-ACK information according to the method of 3GPP TS 38.2139.1.3.1, setting after completing c and M cycles of generating pseudo codes for the second HARQ-ACK codebook in 3GPP TS 38.2139.1.3.1

According to the method of 3GPP TS 38.2139.1.3.1, the second HARQ-ACK information generated by PUCCH transmission time unit i ((g +1) mod2) in one slot does not include the HARQ-ACK information generated for SPS PDSCH reception.

The PUCCH transmission time unit i (g) contains only the first HARQ-ACK information if q is 0.

If q is equal to 1, the process is repeated,

if the value of g is 1, then,

the first HARQ-ACK information is located after the second HARQ-ACK information in PUCCH transmission time unit i (g).

Otherwise

The second HARQ-ACK information is located after the first HARQ-ACK information in PUCCH transmission time unit i (g).

The UE appends the SPS PDSCH generated according to the method of 3GPP TS 38.2139.1.3.1 to receive corresponding HARQ-ACK information (if present) after the first HARQ-ACK information and the second HARQ-ACK information (if present).

If one DCI format indicating a slot for PUCCH transmission does not include a new feedback indication field, PDSCH reception scheduled by that DCI format is associated with PDSCH group 0, and the DCI format h (g) setting needs to be satisfied only if h (g) is provided by another DCI format that provides PDSCH group 0 with a value of h (g) and indicates a slot for PUCCH transmission. Note that, the slots of PUCCH transmission may be the same slot.

Note that the condition "if" in this example

Or h^(g+1)mod2(g) H ((g +1) mod2) "may be replaced by" if

Or h^(g+1)mod2(g) H ((g +1) mod2), or g 1 and the UE detects a DCI format without PDSCH group index field at the time of one PDCCH reception, which is located after the PDCCH reception carrying the last DCI format, which provides g value and both DCI formats indicate the same PUCCH transmission time unit ".

In this scheme, there are two methods for generating the second HARQ-ACK information according to different conditions being satisfied. If with h^(g ^+1)mod2(g) Whether or not it is emptyAs a determination condition, when g is 1 and the UE detects a DCI format not including the PDSCH group index field when receiving a PDCCH, the PDCCH is received after receiving the PDCCH carrying the last DCI format, the last DCI format provides a g value and the two DCI formats indicate the same PUCCH transmission time unit, so that the second HARQ-ACK information cannot be correctly generated. The problem is solved in the scheme, and the reliability of the HARQ-ACK codebook is improved. Also, when the second HARQ-ACK information is generated, it is possible to improve scheduling flexibility by determining a PDCCH monitoring time at which m is 0 by associating another DCI format with a different value of h ((g +1) mod 2). When the second HARQ-ACK information is generated, when g ═ 1,

in case of (3), when none of the DCI formats scheduling PDSCH group 0 includes the new feedback indication field, h may be according to the last DCI format^(g+1)mod2(g) To determine the new feedback indication for PDSCH group 0 as h^(g+1)mod2(g) And the scheduling flexibility is improved.

It should be noted that, in this embodiment, if the UE receives other DCI formats that do not provide the PDSCH group index field after the PDCCH monitoring time carrying the last DCI format indicates the same PUCCH transmission, the UE may pass through the last DCI format

To determine second HARQ-ACK information. For example, the value of g is 1,

for 4, after the PDCCH monitoring time carrying the last DCI format, the UE receives another DCI format not providing the PDSCH group index field indicating that C-DAI of the same PUCCH transmission is 1, at this time, the UE may determine that j is 1, and the number of DCI that should be fed back is 5.

PUCCH transmission using PUCCH Format 2, PUCCH Format 3, or PUCCH Format 4 for UCI, O, of less than or equal to 11 bits_ACK+O_SR+O_CSILess than or equal to 11, n is determined_HARQ-ACK，n_HARQ-ACKIs the information bit number of the HARQ-ACK codebook related to PUCCH power control. Wherein, O^ACKIs the number of bits of the HARQ-ACK codebook, O_SR(i) Information bits which are SR; o is_CSI(i) Is the information bit of the CSI.

N_SPS,cAnd feeding back the number of SPS PDSCHs of the HARQ-ACK information on the same PUCCH, which are received by the UE in the serving cell c.

N, in case all serving cells are not configured with CBG (Code Block Group) retransmission_HARQ-ACK,gAnd n_{HARQ-ACK,(g+1)mod2}Can be determined by the following formula.

Wherein

Is the number of bits of the C-DAI.

For n_HARQ-ACK,g，

If is

Then

If is

Then

-U_DAI,cThe number of DCI formats received by the UE in M PDCCH monitoring times on the serving cell c is the number of DCI formats that may schedule PDSCH reception or indicate SPS PDSCH release of any serving cell c or indicate secondary cell dormancy of any serving cell c. If the UE monitors M PDCCH monitoring momentsIf no DCI format scheduling PDSCH reception on the serving cell c is received or SPS PDSCH release is indicated or any auxiliary cell is indicated to be dormant, U_DAI,c＝0。

Otherwise

-if the parameter harq-ACK-SpatialBundlingPUCCH is not configured, then

It should be noted that, if not otherwise specified, both the C-DAI and the T-DAI in the above formula correspond to the C-DAI and the T-DAI of the calculated PDSCH group. Calculating n_{HARQ-ACK,(g+1)mod2}And n_HARQ-ACK,gThe difference is that for n_{HARQ-ACK,(g+1)mod2}If, if

Then

If it is not

Then

Is determined and calculated n_HARQ-ACK,gThe same is true. It should be noted that, if g is 1 and the UE detects a DCI format not including the PDSCH group index field when receiving a PDCCH, and the PDCCH is received after the PDCCH carrying the last DCI format, the last DCI format provides a g value and the two DCI formats indicate the same PUCCH transmission time unit, and the setting is performed to set the DCI format to the g value

If it is not

The last DCI format may indicate a T-DAI for a (g +1) mod2 group,

may be determined by the T-DAI of which the last DCI format may indicate a (g +1) mod2 group. If it is not

Can be determined by scheduling the T-DAI (if present) or the C-DAI (if T-DAI is not present) for the (g +1) mod2 group.

n_HARQ-ACK＝n_HARQ-ACK,TB+n_HARQ-ACK,CBGnamely, it is

n_HARQ-ACK,g＝n_{HARQ-ACK,g,TB}+n_{HARQ-ACK,g,CBG}

n_{HARQ-ACK,(g+1)mod 2}＝n_{HARQ-ACK,(g+1)mod 2,TB}+n_{HARQ-ACK,(g+1)mod 2,CBG}

Wherein

If is

Then

If is

Then

-

The number of DCI formats received by the UE in M PDCCH monitoring times in serving cell c may schedule CBG-based PDSCH reception. If the UE does not receive any DCI format scheduling CBGPDSCH-based reception on the serving cell c for M PDCCH monitoring instants,

-

may be the number of CBGs in a CBG-based PDSCH scheduled by one DCI format received on a serving cell c at PDCCH monitoring time m, the scheduled PDSCH being on the same cellAnd feeding back HARQ-ACK information by the PUCCH.

It should be noted that, if not specifically stated, the DAIs in the above formula all correspond to the calculated PDSCH group. Calculating n_{HARQ-ACK,(g+1)mod2,CBG}And n_{HARQ-ACK,g,CBG}In contrast to, for n_{HARQ-ACK,(g+1)mod2,CBG}If, if

Then

If it is not

Then

Is determined and calculated n_{HARQ-ACK,CBG,g}The same is true. Herein, the

Indicating the T-DAI of the CBG HARQ-ACK sub-codebook. The T-DAI indicating the CBG HARQ-ACK sub-codebook may be the same as the T-DAI indicating the TB HARQ-ACK sub-codebook, or the T-DAI indicating the CBG HARQ-ACK sub-codebook may be different from the T-DAI indicating the TB HARQ-ACK sub-codebook.

The embodiment designs a method for determining the information bit number n of a HARQ-ACK codebook related to PUCCH power control for UCI less than or equal to 11 bits by using PUCCH transmission of PUCCH format 2 or PUCCH format 3 or PUCCH format 4 when two PDSCH groups are scheduled_HARQ-ACKIn the embodiment, the calculation of n is considered in the scheduling group and the non-scheduling group_HARQ-ACKThe time difference improves the PUCCH power control performance, ensures the consistency of the base station and the UE for understanding the PUCCH transmitting power, and improves the reliability of the HARQ-ACK codebook.

n_HARQ-ACK＝n_HARQ-ACK,g+n_{HARQ-ACK,(g+1)mod2}

Wherein n is calculated_HARQ-ACK,gAnd n_{HARQ-ACK,(g+1)mod2}A method may be followed in accordance with 3GPP TS 38.2139.1.3.1, where for n_{HARQ-ACK,(g+1)mod2}，N_SPS,c0 and if

Then

Or, wherein n is calculated_HARQ-ACK,gAnd n_{HARQ-ACK,(g+1)mod2}A method may be followed in accordance with 3GPP TS 38.2139.1.3.1, where for n_HARQ-ACK,g，N_SPS,c0. For n_{HARQ-ACK,(g+1)mod2}If, if

Then

The embodiment can achieve the same technical effect as the previous embodiment, and the embodiment utilizes the existing protocol to the greatest extent and reduces the change of the protocol. The number of SPS PDSCH receptions is grouped into g groups at the time of calculation, and N is set for (g +1) mod2 groups_SPS,c0. Or the number of SPS PDSCH receptions is classified as (g +1) mod2 group, and for g group, N is set_SPS,c＝0。

Fig. 5 shows a block diagram of a transceiving node of a first type according to an embodiment of the present invention.

Referring to fig. 5, a first type of transceiving node 500 may comprise a transceiver 501 and a controller 502.

The transceiver 501 may be configured to transmit first type data and/or first type control signaling to a second type transceiving node and to receive a HARQ-ACK codebook from the second type transceiving node in a time unit.

The controller 502 may be a circuit application specific integrated circuit or at least one processor. The controller 102 may be configured to control the overall operation of the transceiving nodes of the first class, including controlling the transceiver 501 to transmit data of the first class and/or control signaling of the first class to transceiving nodes of the second class and to receive a HARQ-ACK codebook from a transceiving node of the second class at a determined time unit, and the HARQ-ACK codebook and the time unit are determined by the transceiving nodes of the second class based on the received data of the first class and/or control signaling of the first class.

In the following description, the BS is taken as an example (but not limited to) to describe the first type of transceiving node, the UE is taken as an example (but not limited to) to describe the second type of transceiving node, the downlink time unit is taken as a (but not limited to) to describe the first type of time unit, and the uplink time unit is taken as a (but not limited to) to describe the time unit. The first type of data and/or the first type of control signaling are illustrated with, but not limited to, downlink data and/or downlink control signaling. The HARQ-ACK codebook may be included in the second type of control signaling, which is illustrated with, but not limited to, uplink control signaling.

First, in step 601, the BS transmits downlink data and/or downlink control signaling to the UE.

In step 602, the BS receives a HARQ-ACK codebook from the UE in an uplink time unit, wherein the HARQ-ACK codebook and the uplink time unit are determined by the UE based on the received downlink data and/or downlink control signaling.

Those skilled in the art will understand that the BS decodes the HARQ-ACK codebook based on a method corresponding to the method performed by the UE in the above-described embodiment.

Those of skill in the art would understand that the various illustrative logical blocks, modules, circuits, and steps described in this application may be implemented as hardware, software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The various illustrative logical blocks, modules, and circuits described herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

The steps of a method or algorithm described in this application may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.

In one or more exemplary designs, the functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The examples of the present application are only for the purpose of easy description and to aid in a comprehensive understanding of the present application, and are not intended to limit the scope of the present application. Therefore, it should be understood that all modifications and changes or forms of modifications and changes derived from the technical idea of the present application other than the embodiments disclosed herein fall within the scope of the present application.

Claims

1. A method performed by a second type of transceiving node in a wireless communication system, comprising:

receiving first type data and/or first type control signaling from a first type transceiving node;

determining a hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook and a time unit for transmitting the HARQ-ACK codebook based on the first type of data and/or the first type of control signaling; and

and transmitting the HARQ-ACK codebook to the first type transceiving node in the determined time unit.

2. The method of claim 1, wherein determining the HARQ-ACK codebook further comprises converting values of allocation index fields expressed in different bit numbers in the control signaling of the first type in different formats into values expressed in a uniform bit number, and determining the HARQ-ACK codebook based on the converted values of the allocation index fields.

3. The method of claim 2, wherein the uniform number of bits is a maximum number of bits or a minimum number of bits among different numbers of bits representing a value of an allocation index field.

4. The method according to claim 3, further comprising determining the number of information bits of a HARQ-ACK codebook related to power control of a physical uplink control channel, PUCCH, based on the number of bits of an allocation index field received at the last listening time instant.

5. The method of claim 2, wherein the uniform number of bits is configured according to protocol specifications or higher layer signaling.

6. The method of claim 5, wherein the uniform number of bits is configured to represent a maximum number of bits or a minimum number of bits among different numbers of bits of a value of an allocation index field according to a protocol specification or higher layer signaling.

7. The method of claim 5, further comprising determining a number of information bits of a HARQ-ACK codebook related to power control of a PUCCH based on the uniform number of bits configured according to a protocol specification or higher layer signaling.

8. The method of claim 2, wherein the uniform number of bits is determined according to a priority of a HARQ-ACK codebook.

9. The method of claim 8, wherein if the priority of the HARQ-ACK codebook is high, the uniform bit number is determined as a minimum bit number among different bit numbers representing values of the allocation index field; and if the priority of the HARQ-ACK codebook is low, determining the uniform bit number as the maximum bit number among different bit numbers representing values of the allocation index field.

10. The method of claim 1, wherein the determining a HARQ-ACK codebook further comprises:

and determining a set M of the counting time of the allocation index corresponding to the HARQ-ACK codebook sent in the determined time unit based on the first type of control signaling.

11. The method according to claim 10, wherein in case that a physical downlink shared channel, PDSCH, is configured on a slot-based retransmission mechanism, a first parameter dynamically indicating a number of times of slot-based retransmission of the PDSCH is configured, and the set of counting instants, M, is determined according to the first parameter or a maximum of the set of first parameters.

12. The method of claim 10, wherein in a case where the PDSCH slot-based retransmission mechanism is configured, a first parameter dynamically indicating the number of times the PDSCH slot-based retransmission mechanism is configured and a second parameter semi-statically indicating the number of times the PDSCH slot-based retransmission mechanism is configured, and the set of counting instants M is determined according to a maximum value among maximum values of the sets of the first and second parameters.

13. A second type of transceiving node in a wireless communication system, comprising:

a transceiver configured to:

receiving first type data and/or first type control signaling from a first type transceiving node; and

transmitting an HARQ-ACK codebook to the first type of transceiving nodes in a time unit;

a controller configured to control overall operation of the second type of transceiving node, comprising:

determining a HARQ-ACK codebook and the time unit for transmitting the HARQ-ACK codebook based on the first type data and/or the first type control signaling; and

and controlling the transceiver to transmit the HARQ-ACK codebook to the first type transceiving node in the determined time unit.

14. A method performed by a first type of transceiving node in a wireless communication system, comprising:

sending first-class data and/or first-class control signaling to a second-class transceiving node;

receiving a HARQ-ACK codebook from a second type of transceiving node in a time unit;

wherein the HARQ-ACK codebook and the time unit are determined by the second type transceiving node based on the received first type data and/or first type control signaling.

15. A first type transceiving node in a wireless communication system, the first type transceiving node comprising:

a transceiver configured to transmit first type data and/or first type control signaling to a second type transceiving node and to receive a HARQ-ACK codebook from the second type transceiving node in a time unit; and

a controller configured to control overall operation of the first type of transceiving node, comprising:

the control transceiver sends first type data and/or first type control signaling to the second type transceiving nodes and receives HARQ-ACK codebooks from the second type transceiving nodes in the time unit;