WO2021057903A1

WO2021057903A1 - Method and device for processing physical downlink shared channel

Info

Publication number: WO2021057903A1
Application number: PCT/CN2020/117735
Authority: WO
Inventors: 李娜; 曾超君; 沈晓冬
Original assignee: 维沃移动通信有限公司
Priority date: 2019-09-27
Filing date: 2020-09-25
Publication date: 2021-04-01
Also published as: CN112584529A; CN112584529B

Abstract

Provided are a method and device for processing a physical downlink shared channel. The method comprises: determining, according to first information, a PDSCH group to which a first PDSCH belongs, and/or an NFI or a DAI corresponding to the first PDSCH, wherein the first PDSCH is a PDSCH that does not have a corresponding PDCCH, and the first information comprises at least one of the following: information indicating high-layer signaling; information indicating activation of an DCI corresponding to the first PDSCH; information carried by an additional PDCCH; information of an agreed protocol; information carried by the first PDSCH; and an NFI or a DAI corresponding to a second PDSCH.

Description

Method and equipment for processing physical downlink shared channel

Technical field

The embodiments of the present disclosure relate to the field of communication technologies, and in particular to a method and device for processing a physical downlink shared channel.

Background technique

For the new air interface (NR-Unlicensed, NRU) of the unlicensed frequency band, in order to enable the terminal (such as User Equipment (UE)) to transmit multiple times a hybrid automatic repeat request acknowledgement (Hybrid automatic repeat request acknowledgement, HARQ-ACK) Opportunity, the introduction of PDSCH grouping and HARQ-ACK trigger mechanism, for each physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), the UE needs to determine the PDSCH corresponding to the PDSCH group and new acknowledgement feedback group indication (New ACK-Feedback Group Indicator) , NFI) value or Downlink Assignment Index (DAI), these values are all realized by scheduling the PDCCH indicator of the PDSCH. For the PDSCH without corresponding PDCCH, how to determine the PDSCH group to which the PDSCH belongs, or the PDSCH corresponding to the PDSCH NFI or DAI is a problem that needs to be solved urgently.

Summary of the invention

An objective of the embodiments of the present disclosure is to provide a method and device for processing a physical downlink shared channel to solve the problem of how to determine the PDSCH group to which the PDSCH belongs, or the NFI or DAI corresponding to the PDSCH.

According to the first aspect, embodiments of the present disclosure provide a method for processing a physical downlink shared channel, including:

According to the first information, determine the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH;

Wherein, the first PDSCH is a PDSCH without a corresponding physical downlink control channel PDCCH;

The first information includes at least one of the following:

Information indicated by higher layer signaling;

The indication of activating downlink DCI corresponding to the first PDSCH;

Information carried by the additional PDCCH;

Information stipulated in the agreement;

Information carried by the first PDSCH;

The NFI or DAI corresponding to the second PDSCH, the second PDSCH has a corresponding PDCCH, the second PDSCH is the nearest PDSCH before the first PDSCH, and the second PDSCH belongs to the same A PDSCH group.

In the second aspect, the embodiments of the present disclosure also provide a terminal, including:

The determining module is configured to determine, according to the first information, the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH;

Wherein, the first PDSCH is a PDSCH without corresponding PDCCH;

The first information includes at least one of the following:

Information indicated by higher layer signaling;

An indication of activating DCI corresponding to the first PDSCH;

Information carried by the additional PDCCH;

Information stipulated in the agreement;

Information carried by the first PDSCH;

In a third aspect, embodiments of the present disclosure also provide a terminal, including: a processor, a memory, and a program stored on the memory and capable of running on the processor, the program being executed when the processor is executed The steps of the method for processing the physical downlink shared channel as described in the first aspect.

In a fourth aspect, the embodiments of the present disclosure also provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the physical downlink as described in the first aspect is implemented. The steps of the shared channel processing method.

In the embodiments of the present disclosure, the PDSCH group to which the PDSCH without corresponding PDCCH belongs, or the NFI or DAI corresponding to the PDSCH can be determined according to the first information, so as to prepare for subsequent HARQ-ACK triggering and transmission, thereby improving the effectiveness of the communication system Sex.

Description of the drawings

By reading the detailed description of the optional embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only used for the purpose of showing alternative embodiments, and are not considered as a limitation to the present disclosure. Also, throughout the drawings, the same reference symbols are used to denote the same components. In the attached picture:

Figures 1a and 1b are schematic diagrams of the UE determining the HARQ-ACK feedback of a PDSCH scheduled with a non-numerical value k1;

2a and 2b are schematic diagrams of HARQ-ACK triggering and transmission based on PDSCH group;

Figure 3 is a schematic diagram of the impact of NFI flipping on HARQ-ACK triggering and feedback;

Figure 4 is a schematic diagram of the architecture of a wireless communication system;

FIG. 5 is a schematic diagram of a method for processing a physical downlink shared channel according to an embodiment of the disclosure;

FIG. 6 is a schematic diagram of HARQ-ACK feedback in Embodiment 1 of an embodiment of the disclosure;

FIG. 7 is a schematic diagram of HARQ-ACK feedback in the second implementation manner of an embodiment of the disclosure;

FIG. 8 is a schematic diagram of HARQ-ACK feedback in Embodiment 3 of an embodiment of the disclosure;

FIG. 9 is a schematic diagram of HARQ-ACK feedback in Embodiment 4 of an embodiment of the disclosure;

FIG. 10 is a schematic diagram of HARQ-ACK feedback in Embodiment 5 of an embodiment of the disclosure;

FIG. 11 is one of schematic diagrams of a terminal according to an embodiment of the disclosure;

FIG. 12 is a second schematic diagram of a terminal according to an embodiment of the disclosure.

detailed description

1. Regarding the unauthorized communication system:

In the future communication system, the unlicensed band (Unlicensed Band) can be used as a supplement to the licensed band (Licensed Band) to help operators expand their services. Since the unlicensed frequency band is shared by multiple technologies (Radio Access Technology, RAT), such as Wireless Fidelity (Wi-Fi), Radar, Long Term Evolution (LTE)-Authorized Auxiliary Access (Authorized Auxiliary Access) Therefore, in some countries or regions, unlicensed frequency bands must comply with regulatory regulations when they are used to ensure that all devices can share the resources fairly, such as listening channel (Listen Before Talk, LBT), maximum Channel Occupancy Time (Maximum Channel Occupancy Time, MCOT), etc. When a transmission node needs to send information, it is required to perform LBT on the designated wireless channel first, and perform Energy Detection (ED) on the surrounding wireless transmission environment. When the energy is lower than a certain threshold, the channel is judged to be idle. Before you can start the transfer. Otherwise, it is judged that the channel is busy and the transmission node cannot send. The transmission node may be a base station, a terminal, a Wi-Fi access point (Access Point, AP), etc. After the transmission node starts transmission, the occupied channel time cannot exceed MCOT.

2. Regarding downlink scheduling and feedback:

In a wireless communication system based on a shared channel, the network side reasonably allocates designated shared resources to each terminal, and instructs the terminal to use the designated shared resource to perform corresponding sending/receiving operations through Downlink Control Information (DCI). For the downlink direction, the resource allocation process is downlink scheduling. After the terminal completes the corresponding reception operation, it needs to feed back the reception result to the network side so that the network side can perform subsequent downlink scheduling processing. When the HARQ-based transmission mechanism is used, the feedback here can be Called HARQ-ACK.

In the New Radio (NR) communication system, in order to support flexible timing processing, the network-side base station (gNB) in the DCI indicates to the UE the time-frequency resources and data transmission corresponding to the downlink transmission, and also indicates the corresponding information. The physical uplink control channel (PUCCH) resource situation used for HARQ-ACK transmission, including the PUCCH resource number (for example, PUCCH resource indicator (PRI)), and the time slot of the PUCCH resource relative to the downlink PDSCH transmission The offset of the time slot.

When indicating the time slot offset of the PUCCH resource, the radio resource control (Radio Resource Control, RRC) first configures a time slot offset table dl-DataToUL-ACK for the UE semi-statically, which is a sequence of available time slot offsets , And then use the PDSCH-to-HARQ-timing-indicator field in the DCI to indicate a certain index in the semi-statically configured sequence as the actual PUCCH resource slot offset.

3. About NR's HARQ-ACK Codebook solution:

When the UE constructs a HARQ-ACK bit sequence that needs to be reported at a certain feedback moment, it determines the correspondence between each downlink PDSCH transmission and a bit in the constructed HARQ-ACK bit sequence based on a predefined rule. This operation is called To construct HARQ-ACK codebook (Codebook) or HARQ-ACK Codebook solution. NR version 15 (Release 15, Re-15) adopts two HARQ-ACK Codebook schemes: semi-static codebook (Type-1) and dynamic codebook (Type-2):

a. The semi-static codebook is based on the feedback timing (Timing) configuration table (that is, the aforementioned time slot offset table dl-DataToUL-ACK) and HARQ-ACK feedback time, for each possible PDSCH time domain at each possible scheduling time The allocation (based on a certain configuration in the feedback Timing configuration table, the HARQ-ACK feedback time corresponding to this PDSCH time domain allocation is exactly the time when the HARQ-ACK bit sequence is reported). Corresponding feedback bits are reserved. When the UE does not actually detect the corresponding network scheduling indication, the corresponding feedback bit is set to Negative Acknowledgement (NACK), otherwise the corresponding PDSCH transmission decoding is allocated according to this PDSCH time domain As a result, the corresponding feedback bit is set;

b. The dynamic codebook counts the downlink assignment index (DAI) of the actually scheduled PDSCH transmission/SPS PDSCH release indication, and reserves feedback bits for each actually scheduled PDSCH/SPS PDSCH release. If the UE infers from other detected DAIs that the PDSCH allocation instructions or SPS PDSCH release instructions corresponding to some DAIs have not been received, the corresponding feedback bit is set to NACK, otherwise the decoding result of the PDSCH transmission corresponding to each PDSCH allocation instruction is set , Set the corresponding feedback bit, and set the corresponding feedback bit as ACK for the detected SPS PDSCH release indication.

DAI uses a limited number of bits (currently a single DAI generally occupies 2 bits) to indicate. In order to expand its indication range, a modulo operation is introduced, that is, to start counting sequentially from 1, and then take the modulo to get the DAI corresponding to a certain count value.

4. The HARQ-ACK trigger feedback mechanism for NR unlicensed spectrum (NR-U):

For the NR-U network, when the UE feeds back the HARQ-ACK corresponding to the downlink PDSCH transmission based on the downlink scheduling signaling, because the UE needs to perform idle channel detection before transmitting the PUCCH, due to the uncertainty of acquiring the wireless channel, and the PUCCH transmission process For reasons such as interference caused by potential hidden nodes, the UE cannot feed back the HARQ-ACK at the specified time or the base station cannot successfully receive the HARQ-ACK feedback. Therefore, some enhancements have been made to the HARQ-ACK mechanism in NRU, including:

1) Introduce a non-numerical timing indicator (nonnumerical k1): in order for the base station to schedule the PDSCH, the HARQ-ACK of different PDSCHs can be fed back to the HARQ-ACK at the end of the channel occupation time (Channel Occupancy Time, COT), or in the COT For the PDSCH scheduled at the end, due to the limitation of processing time, the HARQ-ACK cannot be fed back in the current COT, and the feedback will not be performed until the next COT. When the DCI indicates this value, it means that the UE needs to save the HARQ-ACK of the PDSCH. ACK feedback, and the specific time and resources for HARQ-ACK feedback will be given later.

2) Support the HARQ-ACK trigger feedback mechanism: In order to solve the unnecessary PDSCH retransmission problem caused by the UE unable to send or the base station failed to receive the initial HARQ-ACK feedback, the HARQ-ACK trigger feedback mechanism is introduced.

Specifically, the scheduled PDSCHs are divided into different groups. When each PDSCH is scheduled, the DCI will indicate which PDSCH group the current PDSCH belongs to. The base station can trigger the UE to feed back the HARQ-ACK of the PDSCH in the corresponding group through the DCI. information. The number of PDSCHs in each PDSCH group can be continuously increased. At the same time, there is also an NFI field in the PDCCH of the PDSCH. When the NFI is inverted relative to the NFI of the previous PDSCH in the same group, it means that the UE only needs to feed back the HARQ-ACK of the PDSCH included in the PDSCH group after the NFI is inverted. Cumulative DAI (counter-DAI, C-DAI)/total DAI (total DAI, T-DAI) are calculated separately in each PDSCH group.

The RRC parameter dl-DataToUL-ACK supports a non-numerical configuration, and can indicate the value in the DCI through the PDSCH-to-HARQ-timing-indicator field (k1), which instructs the UE to store HARQ ACK/NACK feedback for the corresponding PDSCH As a result, it does not provide any timing for the transmission of the HARQ ACK/NACK feedback result.

For the possible value range of PDSCH-to-HARQ-timing-indicator, on the basis of the value defined in Release 15 (Rel-15), the non-numeric value is added and used to indicate to the UE that the HARQ-ACK of the corresponding PDSCH The feedback is delayed until the gNB provides timing and resources for HARQ-ACK feedback.

For the enhanced dynamic codebook operation, the HARQ-ACK timing of the PDSCH scheduled with a non-value k1 is derived from the next DL DCI scheduled PDSCH. The DL DCI contains a value k1 and triggers the HARQ-ACK feedback of the PDSCH group including the PDSCH.

In order to provide multiple HARQ ACK/NACK transmission opportunities and cross-COT HARQ-ACK feedback, at least the following content is supported: base station (gNB) request/trigger feedback for PDSCH from earlier COT, or re-feedback of earlier HARQ feedback, The exact HARQ feedback timing and resources are provided to the UE in another DCI (in the same or another COT).

For operations using dynamic HARQ codebook (type-2 codebook):

· PDSCH grouping is performed by explicitly sending the group index in the DCI for scheduling PDSCH;

For any PDSCH scheduled with a numerical value or a non-numerical value of k1;

· The number of HARQ-ACK bits of a PDSCH group can be changed between consecutive requests for PDSCH feedback of the same PDSCH group;

·The HARQ-ACK feedback of all PDSCHs in the same group is performed in the same PUCCH;

·A DCI can request HARQ-ACKs of one or more PDSCH groups to be fed back in the same PUCCH;

·C-DAI/T-DAI only accumulate in each PDSCH group;

· Each PDSCH group has a new ACK feedback group indication as a flipping bit;

· The maximum number of PDSCH groups;

·As a UE capability, this function is reported by the UE.

Refer to Figure 1a and Figure 1b, as an example how the UE determines the HARQ-ACK feedback of the PDSCH scheduled by non-numerical k1. In Figure 1a, the base station schedules PDSCH1 through PDCCH1, and its PDSCH to HARQ-ACK feedback timing indication is non-numerical ( k1=N, non-numerical value), then PDCCH2 schedules PDSCH2 again, and its PDSCH to HARQ-ACK feedback timing indication is a specific value k1=4, which means that the UE feeds back the PDSCH2 after 4 time slots after receiving PDSCH2 HARQ-ACK, and because PDSCH1 and PDSCH2 belong to the same PDSCH group, NFI is equal to 0, and there is no overturn, the UE needs to feed back the HARQ-ACK of PDSCH1 and PDSCH2 together (the non-value k1 is determined by the PDSCH scheduled later in the same PDSCH group HARQ-ACK feedback time and resources of scheduled PDSCH).

In Figure 1b, the base station schedules PDSCH1 through PDCCH1, and its PDSCH to HARQ-ACK feedback timing indicator is a non-numerical value k1=N, then PDCCH2 schedules PDSCH2 again, and its PDSCH to HARQ-ACK feedback timing indicator is a specific value k1= 4, it means that the UE feeds back its HARQ-ACK 4 time slots after receiving PDSCH2. Although PDSCH1 and PDSCH2 belong to different PDSCH groups, the base station triggers another PDSCH group through the HARQ-ACK trigger field in PDCCH2 ( The HARQ-ACK feedback of PDSCH group 0) (T=1), so the UE needs to feed back the HARQ-ACK of PDSCH1 and PDSCH2 together (the non-numeric value is determined by the triggering of the HARQ-ACK trigger field in other PDSCH groups scheduled later Time and resources of HARQ-ACK feedback of PDSCH scheduled by k1).

Refer to Figure 2a and Figure 2b, which illustrate the HARQ-ACK triggering and transmission based on the PDSCH group. In Figure 2a, the base station schedules PDSCH1 through PDCCH1, and instructs the UE to feed back its HARQ-ACK on PUCCH1. The UE detects that the channel is busy when transmitting PUCCH1 and cannot send PUCCH1. Later, when the base station schedules PDSCH2 through PDCCH2, it indicates that PDSCH2 belongs to PDSCH. Group 0, NFI=0, the NFI of PDSCH1 (also belonging to PDSCH group 0) is not inverted, so the UE will feed back the HARQ-ACK of PDSCH1 and PDSCH2 on PUCCH2 (the UE needs to feed back at least one PDSCH group’s data on one PUCCH resource). HARQ-ACK for PDSCH).

In Figure 2b, the base station schedules PDSCH1 through PDCCH1, and instructs the UE to feed back its HARQ-ACK on PUCCH1. The UE detects that the channel is busy when transmitting PUCCH1 and cannot send PUCCH1. Later, when the base station schedules PDSCH2 through PDCCH2, it indicates that PDSCH2 belongs to PDSCH. Group 1, and the HARQ-ACK trigger field (used to trigger the HARQ-ACK of another PDSCH group) T=1, so the UE will feed back the HARQ-ACK of PDSCH group 0 (PDSCH1) and PDSCH group 1 (PDSCH2) on PUCCH2 .

Refer to Figure 3, which illustrates the impact of NFI flipping on HARQ-ACK triggering and feedback. PDSCH1 is scheduled through PDCCH1, and the UE is instructed to feed back its HARQ-ACK on PUCCH1. When the UE detects that the channel is busy when transmitting PUCCH1, it cannot send PUCCH1. Later, when the base station schedules PDSCH2 through PDCCH2, it indicates that PDSCH2 belongs to PDSCH group 0, NFI= 0, the NFI relative to PDSCH1 (also belonging to PDSCH group 0) is not inverted, so the UE will feed back the HARQ-ACK of PDSCH1 and PDSCH2 on PUCCH2. The UE successfully transmits PUCCH2. When the base station next schedules PDSCH3, it indicates that PDSCH2 belongs to PDSCH group 0, with NFI=1. Compared with the NFI of PDSCH2 (also belongs to PDSCH group 0), the UE only needs to feed back the HARQ-ACK of PDSCH3, and It is no longer necessary to feed back the HARQ-ACK of PDSCH1 and PDSCH2.

The term "including" in the specification and claims of this application and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to clear Those steps or units listed below may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. In addition, the use of "and/or" in the specification and claims means at least one of the connected objects, such as A and/or B, which means that A and B alone are included, and there are three cases for both A and B.

In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as being more optional or more advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

The technology described in this article is not limited to the fifth-generation mobile communication (5th-generation, 5G) system and subsequent evolution communication systems, and is not limited to the LTE/LTE evolution (LTE-Advanced, LTE-A) system, and can also be used for various A wireless communication system, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems.

The terms "system" and "network" are often used interchangeably. The CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA). UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants. The TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM). OFDMA system can realize such as Ultra Mobile Broadband (UMB), Evolved UTRA ((Evolution-UTRA, E-UTRA)), IEEE 802.11 ((Wi-Fi)), IEEE 802.16 ((WiMAX)), IEEE 802.20, Flash-OFDM and other radio technologies. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and more advanced LTE (such as LTE-A) are new UMTS versions that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described in this article can be used for the systems and radio technologies mentioned above, as well as other systems and radio technologies.

The embodiments of the present disclosure are described below with reference to the accompanying drawings. The method and device for processing a physical downlink shared channel provided by the embodiments of the present disclosure can be applied to a wireless communication system. Refer to FIG. 4, which is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present disclosure. As shown in Fig. 4, the wireless communication system may include: a network device 40 and a terminal 41. The terminal 41 may be denoted as a UE 41, and the terminal 41 may communicate with the network device 40 (transmit signaling or transmit data). In practical applications, the connection between the above-mentioned devices may be a wireless connection. In order to conveniently and intuitively represent the connection relationship between the devices, a solid line is used in FIG. 4 to indicate.

The network device 40 provided in the embodiment of the present disclosure may be a base station, which may be a commonly used base station, an evolved node base station (eNB), or a network device in a 5G system (for example, the following Equipment such as next generation node base station (gNB) or transmission and reception point (TRP)).

The terminal 41 provided in the embodiments of the present disclosure may be a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (Ultra-Mobile Personal Computer, UMPC), a netbook or a personal digital assistant (Personal Digital Assistant, PDA), a mobile Internet device (Mobile Internet Device (MID), Wearable Device (Wearable Device), or in-vehicle equipment, etc.

Referring to FIG. 5, an embodiment of the present disclosure provides a PDSCH processing method. The execution subject of the method is a terminal, and the specific steps are as follows:

Step 501: According to the first information, determine the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH;

Wherein, the first PDSCH is a PDSCH without corresponding PDCCH;

The first information includes at least one of the following:

(1) High-level signaling, such as information indicated by Radio Resource Control (RRC) signaling;

(2) An indication of activating downlink control information (DCI) corresponding to the first PDSCH;

(3) Information carried by additional PDCCH;

(4) Information stipulated in the agreement;

(5) Information carried by the first PDSCH;

Optionally, the information carried by the first PDSCH may include at least one of the following: (a) the PDSCH group to which the first PDSCH belongs; (b) the NFI corresponding to the first PDSCH; (c) the DAI corresponding to the first PDSCH; (d) The HARQ-ACK trigger field of the second PDSCH group, the second PDSCH group is different from the PDSCH group to which the first PDSCH belongs; (e) the timing of feedback from the first PDSCH to HARQ-ACK; (f) PUCCH resource indication ; (G) Modulation and coding strategy; (h) Redundant version.

(6) NFI or DAI corresponding to the second PDSCH, the second PDSCH has a corresponding PDCCH, the second PDSCH is the nearest PDSCH before the first PDSCH, and the second PDSCH and the first PDSCH belong to the same PDSCH group.

In the embodiments of the present disclosure, the purpose of determining the PDSCH group, NFI or DAI above is to prepare for subsequent HARQ-ACK triggering and transmission, but whether to transmit HARQ-ACK subsequently depends on the scheduling or triggering of the network device. For example, after step 501, the method in FIG. 5 may further include: transmitting the HARQ-ACK of the first PDSCH according to the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH.

In some embodiments, the PDSCH group to which the first PDSCH belongs is the first PDSCH group, and the PDSCH in the first PDSCH group does not correspond to the PDCCH.

In some embodiments, the determination of the PDSCH group to which the first PDSCH belongs in step 501 can be implemented in any of the following ways:

Method 1: Determine the PDSCH group to which the first PDSCH belongs according to the indication of activating DCI corresponding to the first PDSCH. For example, an activated downlink SPS can be activated through DCI format 1_0 or DCI format 1_1, and then according to DCI format 1_0 or DCI format 1_1 The PDSCH group indication field determines the PDSCH group to which each PDSCH after activation belongs.

Manner 2: If no additional information carried by the PDCCH is received, determine the PDSCH group to which the first PDSCH belongs according to the indication of activating the DCI corresponding to the first PDSCH or the information agreed by the protocol or the information indicated by the higher layer signaling; Otherwise, the PDSCH group to which the first PDSCH belongs is determined according to the received indication of the additional PDCCH bearer information, for example, the additional PDCCH is detected before the first PDSCH is received, and the information carried by the additional PDCCH is used to at least indicate the current The PDSCH group to which the first PDSCH in the period belongs.

Manner 3: Determine the PDSCH group to which the first PDSCH belongs according to the information carried by the first PDSCH. For the description of the information carried by the first PDSCH, reference may be made to the embodiment shown in FIG. 8.

In some embodiments, the determination of the NFI or DAI corresponding to the first PDSCH in step 501 can be implemented in any of the following ways:

Manner 1: Determine the NFI or DAI corresponding to the first PDSCH according to the indication of activating the DCI corresponding to the first PDSCH;

Method 2: If no additional PDCCH bearer information is received, determine the NFI or DAI corresponding to the first PDSCH according to the indication of activating DCI corresponding to the first PDSCH; otherwise, determine the NFI or DAI corresponding to the first PDSCH according to the received additional PDCCH bearer information NFI or DAI corresponding to the first PDSCH, and the information carried by the additional PDCCH is at least used to indicate the NFI or DAI corresponding to the first PDSCH in the current period;

Method 3: If no additional PDCCH information is received, determine the NFI or DAI corresponding to the first PDSCH according to the NFI or DAI corresponding to the second PDSCH; otherwise, determine the first PDSCH according to the received additional PDCCH information. NFI or DAI corresponding to PDSCH;

Manner 4: Determine the NFI or DAI corresponding to the first PDSCH according to the information carried by the first PDSCH.

In the embodiments of the present disclosure, it is possible to determine the PDSCH group that does not correspond to the PDCCH, or the NFI or DAI corresponding to the PDSCH, to prepare for subsequent HARQ-ACK triggering and transmission, thereby improving the effectiveness of the communication system.

It should be noted that in the above embodiment, when the UE determines the NFI or DAI corresponding to the first PDSCH according to the activated DCI or the NFI or DAI corresponding to the second PDSCH, the NFI is equal to the activated DCI or the NFI corresponding to the second PDSCH, but DAI needs to be automatically accumulated according to the number of PDSCHs received by the UE.

Example one

As shown in Figure 6, PDCCH1 activates a downlink (Downlink, DL) SPS, and indicates the PDSCH group, NFI and other information in the activated DCI. For the first PDSCH transmission (PDSCH1) after activation, there is a corresponding PDCCH scheduling , The grouping and NFI of PDSCH1 are determined according to the instruction of activating DCI, that is, PDCCH1.

For other PDSCH transmissions after activation, namely PDSCH2, PDSCH3, etc., there is no corresponding PDCCH. In order to simplify the system design, SPS PDSCH, namely PDSCH2 and PDSCH3 do not belong to any PDSCH group, and there is no need to have a corresponding PDSCH group number and NFI indication.

As shown in FIG. 6, according to the scheduling of the base station, the UE feeds back the HARQ-ACK of PDSCH3 without PDCCH and PDSCH4 scheduled with PDCCH2 on PUCCH3. The UE detects that the channel is busy when transmitting PUCCH3 and fails to send PUCCH3 successfully. The base station triggers the UE to transmit HARQ-ACK feedback of PDSCH group 0 in PDCCH3. Since the SPS PDSCH does not belong to any group, the PDCSH of PDSCH group 0 only Contains PDSCH4, that is, the UE needs to feed back HARQ-ACKs of PDSCH4 and PDSCH5 on PUCCH5. For the HARQ-ACK feedback of PDSCH2 and PDSCH3, the UE can only send on PUCCH2 and PUCCH3, respectively.

In this solution, for downlink SPS transmission, only the activated PDSCH in the first cycle (with corresponding PDCCH) supports PDSCH grouping and HARQ-ACKC triggering and transmission based on PDSCH group (determine PDSCH grouping and NFI according to the activated DCI) For the PDSCH (without corresponding PDCCH) after the first cycle after activation, since there is no corresponding PDCCH, PDSCH grouping and HARQ-ACKC triggering and transmission based on PDSCH group are not supported.

Example two

As shown in Figure 7, the PDSCH group to which the SPS PDSCH belongs is determined according to the indication of activating the DCI, that is, PDSCH2 and PDSCH3 belong to PDSCH group 0, and its NFI is determined according to the NFI of the PDSCH of the same PDSCH group that was recently dynamically scheduled, that is, PDSCH2 and PDSCH3 correspond to The NFI=0.

As shown in Figure 7, the UE detects that the channel is busy when transmitting PUCCH2 and fails to send PUCCH2. The base station schedules the UE on PDCCH2 to feed back the HARQ-ACK of PDSCH4 on PUCCH3. At the same time, because the UE needs to feed back a PDSCH group in a PUCCH ( The HARQ-ACK of PDSCH group 0), which triggers the UE to transmit the HARQ-ACK feedback of PDSCH group 0. Since PDSCH1, PDSCH2, PDSCH3, and PDSCH4 all belong to PDSCH group 0, and their NFIs are all equal to 0, there is no inversion, so PDSCH group 0 The PDSCH includes PDSCH 1, PDSCH2, PDSCH3 and PDSCH4.

That is, the UE needs to feed back HARQ-ACKs of PDSCH1, PDSCH2, PDSCH3, and PDSCH4 on PUCCH3. When PDSCH5 is scheduled by PDCCH3, NFI is reversed to 1, and the UE only needs to send HARQ-ACK of PDSCH5 when sending PUCCH4.

It should be noted that in this embodiment, although PDSCH2 and PDSCH1 belong to PDSCH group 0, and NFI=0, there is no inversion, but the UE does not need to feed back the HARQ-ACK feedback of PDSCH1 on PUCCH2, but only needs to feed back the HARQ-ACK of PDSCH2. ACK.

Example three

As shown in Figure 8, the UE detects an additional PDCCH before each PDSCH (such as SPS PDSCH) that does not have a corresponding PDCCH. The additional PDCCH includes the PDSCH grouping indicator, NFI indicator and/or DAI indicator of the SPS PDSCH. . If the UE does not detect an additional PDCCH, the UE will determine the PDSCH group to which the SPS PDSCH belongs according to the indication of activating the DCI (or the agreement stipulates that SPS PDSCH is a default PDSCH group), and its NFI is based on the PDSCH of the same PDSCH group that was recently dynamically scheduled The NFI (including the PDSCH indicated by the additional PDCCH) is determined (or determined according to activating DCI), that is, the PDSCH group to which PDSCH2 belongs is determined as PDSCH group 0 according to the indication of PDCCH1, and the NFI corresponding to PDSCH2 is determined according to the NFI of PDSCH1, that is, NFI= 0.

The corresponding additional PDCCH is detected before PDSCH3, indicating that the PDSCH group corresponding to PDSCH3 is PDSCH group 0, and NFI=1. Therefore, on PUCCH3, the UE only needs to feed back the HARQ-ACK of PDSCH3 and PDSCH4, but not the HARQ of PDSCH1 and PDSCH2. -ACK.

For PDSCH6, since it has not received the corresponding additional PDCCH, the PDSCH group to which PDSCH6 belongs is determined according to the activated PDCCH, that is, PDSCH group 0, and the NFI is determined according to the NFI of PDSCH5 that was previously dynamically scheduled with the same PDSCH group, that is, NFI=0, so The UE needs to feed back the HARQ-ACK of PDSCH5 and PDSCH6 on PUCCH4.

Example four

As shown in FIG. 9, when each PDSCH (for example, SPS PDSCH) without a corresponding PDCCH is transmitted, some information is carried, and the information may include at least one of the following:

(1) The PDSCH group to which the PDSCH belongs;

(2) The NFI corresponding to the PDSCH;

(3) The DAI corresponding to the PDSCH;

(4) HARQ-ACK trigger field of another PDSCH group;

(5) The timing from the PDSCH to HARQ-ACK feedback;

(6) PUCCH resource indication;

(7) Modulation and Coding Scheme (MCS);

(8) Redundancy Version (RV).

Optionally, the above information can be coded together with the data information on the PDSCH and rate matching, or can be coded separately, and mapped on a specific position of the PDSCH according to a predetermined rule. The UE determines the PDSCH group to which it belongs and/or the corresponding NFI and/or DAI according to the information on the decoded PDSCH.

It should be noted that in the above embodiment, if the UE feeds back HARQ-ACK on the PUCCH resource configured by the higher layer (when the UE only feeds back the HARQ-ACK of the PDSCH without PDCCH, or when the UE only feeds back the HARQ-ACK of the PDSCH without PDCCH -CK and no additional information (including additional PDCCH or information carried on the PDSCH) instructs the UE to feed back the PUCCH resource of HARQ-ACK), the UE only feeds back the HARQ-ACK of the PDSCH scheduled without PDCCH, without feedback HARQ-ACK of all PDSCHs of the PDSCH group.

Example five

As shown in Figure 10, PDCCH1 activates a downlink SPS. PDSCH1 is the first PDSCH transmission after activation. Its PDSCH group and NFI are determined according to the instructions in the corresponding PDCCH, namely PDCCH1. PDSCH2, PDSCH3, and PDSCH6 are the PDSCHs of the subsequent period, respectively. For transmission, if there is no corresponding PDCCH, the UE regards all PDSCHs without PDCCH scheduling as a PDSCH group (for example, PDSCH group 2, G=2) according to the protocol or RRC configuration (if the UE has multiple downlink SPS configurations, it can include all downlink SPS configuration corresponding PDSCH), PDCCH includes a two-bit trigger field (assuming there are three PDSCH groups in total, among which PDSCH group 0, PDSCH group 1 is used for PDSCH with PDCCH dynamic scheduling, and PDSCH group 2 is used for PDSCH without PDCCH) trigger HARQ-ACK transmission of PDSCH groups other than the currently scheduled PDSCH group.

For example, the highest bit represents another dynamically scheduled group, and the lowest bit represents the SPS PDSCH group. In the figure, T=0 in PDCCH3 indicates that the HARQ-ACK feedback of the SPS PDSCH group is triggered, and each SPS PDSCH has no corresponding NFI, the UE determines which SPS PDSCH HARQ-ACK received before feedback according to the SPS PDSCH reception time and the time interval between the HARQ-ACK feedback after the trigger (it can be the end position of the SPS PDSCH to the PDCCH that triggers the SPS PDSCH HARQ-ACK feedback The interval between the start positions can also be the interval between the end position of the SPS PDSCH and the start position of the PUCCH that feeds back the SPS PDSCH HARQ-ACK after the trigger), for example, the RRC configuration or the protocol specified time T. For each SPS PDSCH, The UE will save its corresponding SPS HARQ-ACK, until after T, the UE will clear that it will no longer feed back the HARQ-ACK corresponding to the SPS PDSCH.

For example, in the figure, PUCCH2 and PUCCH3 are not successfully transmitted. When the base station triggers the HARQ-ACK transmission of the SPS PDSCH group, if there is no time limit, for the HARQ-ACK of the SPS PDSCH, the UE will feed back PDSCH2, PDSCH3, and PDSCH6 on PUCCH4. HARQ-ACK (and dynamically scheduled PDSCH4, PDSCH5 HARQ-ACK), but if there is a time limit (assuming it is equal to 2 downlink SPS cycles), since the time from PDSCH2 to PUCCH4 exceeds the time limit, the UE only needs to feed back PDSCH3 and PDSCH6 HARQ-ACK (and dynamically scheduled PDSCH4, PDSCH5 HARQ-ACK).

Referring to FIG. 11, an embodiment of the present disclosure further provides a terminal, and the terminal 1100 includes:

The determining module 1101 is configured to determine the PDSCH group to which the first PDSCH belongs according to the first information, and/or the new acknowledgement feedback group indication NFI or downlink allocation indication DAI corresponding to the first PDSCH; wherein, the first PDSCH is no PDSCH corresponding to the physical downlink control channel PDCCH;

The first information includes at least one of the following:

(1) High-level signaling, such as information indicated by RRC signaling;

(2) An indication of activating DCI corresponding to the first PDSCH;

(3) Information carried by additional PDCCH;

(4) Information stipulated in the agreement;

(5) Information carried by the first PDSCH;

Optionally, the information carried by the first PDSCH may include at least one of the following: (a) the PDSCH group to which the first PDSCH belongs; (b) the NFI corresponding to the first PDSCH; (c) the first PDSCH corresponding (D) HARQ-ACK trigger field of the second PDSCH group, the second PDSCH group is different from the PDSCH group to which the first PDSCH belongs; (e) the timing of feedback from the first PDSCH to HARQ-ACK; (f) PUCCH resource indication; (g) modulation and coding strategy; (h) redundancy version.

In some embodiments, the terminal 1100 may further include: a sending module, configured to transmit HARQ-ACK of the first PDSCH according to the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH.

In some embodiments, the PDSCH group to which the first PDSCH belongs is the first PDSCH group, and the first PDSCH group includes PDSCHs that do not correspond to PDCCHs, or PDSCHs that do not have group indications in the corresponding PDCCHs.

In some embodiments, the determining module 1101 determines the PDSCH group to which the first PDSCH belongs in the following manner:

If no additional information carried by the PDCCH is received, the PDSCH group to which the first PDSCH belongs is determined according to the indication of activating the DCI corresponding to the first PDSCH or the information agreed by the protocol or the information indicated by the higher-layer signaling; otherwise, according to The received information carried by the additional PDCCH determines the PDSCH group to which the first PDSCH belongs.

In some implementation manners, the determining module 1101 determines the NFI or DAI corresponding to the first PDSCH in any of the following ways:

Manner 1: If no additional PDCCH information is received, determine the NFI or DAI corresponding to the first PDSCH according to the indication of activating the DCI corresponding to the first PDSCH; otherwise, according to the received additional PDCCH information , Determine the NFI or DAI corresponding to the first PDSCH;

Manner 2: If no additional PDCCH bearer information is received, determine the NFI or DAI corresponding to the first PDSCH according to the NFI or DAI corresponding to the second PDSCH; otherwise, determine according to the received additional PDCCH bearer information NFI or DAI corresponding to the first PDSCH.

The terminal provided in the embodiment of the present disclosure may execute the embodiment shown in FIG. 5, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.

As shown in FIG. 12, the terminal 1200 shown in FIG. 12 includes: at least one processor 1201, a memory 1202, at least one network interface 1204, and a user interface 1203. The various components in the terminal 1200 are coupled together through the bus system 1205. It can be understood that the bus system 1205 is used to implement connection and communication between these components. In addition to the data bus, the bus system 1205 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, various buses are marked as the bus system 1205 in FIG. 12.

Wherein, the user interface 1203 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.).

It can be understood that the memory 1202 in the embodiment of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) And Direct Rambus RAM (DRRAM). The memory 1202 of the system and method described in the embodiments of the present disclosure is intended to include, but is not limited to, these and any other suitable types of memory.

In some implementations, the memory 1202 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: the operating system 12021 and the application 12022.

Among them, the operating system 12021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 12022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. A program that implements the method of the embodiment of the present disclosure may be included in the application program 12022.

In an embodiment of the present disclosure, by calling a program or instruction stored in the memory 1202, specifically, a program or instruction stored in the application program 12022, the steps described in the method shown in FIG. 5 are implemented when executed.

The terminal provided in the embodiment of the present disclosure can execute the method embodiment shown in FIG. 5, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.

The steps of the method or algorithm described in conjunction with the disclosure of the present disclosure may be implemented in a hardware manner, or may be implemented in a manner of executing software instructions on a processor. Software instructions can be composed of corresponding software modules. Software modules can be stored in random access memory (Random Access Memory, RAM), flash memory, memory (Read-Only Memory, ROM), and erasable programmable read-only memory (Erasable). PROM (EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may be carried in an application specific integrated circuit (ASIC). In addition, the ASIC can be carried in the core network interface device. Of course, the processor and the storage medium may also exist as discrete components in the core network interface device.

Those skilled in the art should be aware that, in one or more of the foregoing examples, the functions described in the present disclosure can be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium. The computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

The specific embodiments described above further describe the purpose, technical solutions, and beneficial effects of the present disclosure in further detail. It should be understood that the above descriptions are only specific embodiments of the present disclosure, and are not intended to limit the scope of the present disclosure. The protection scope, any modification, equivalent replacement, improvement, etc. made on the basis of the technical solution of the present disclosure shall be included in the protection scope of the present disclosure.

Those skilled in the art should understand that the embodiments of the present disclosure can be provided as a method, a system, or a computer program product. Therefore, the embodiments of the present disclosure may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present disclosure may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

The embodiments of the present disclosure are described with reference to the flowcharts and/or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the present disclosure. In this way, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure is also intended to include these modifications and variations.

Claims

A method for processing physical downlink shared channel PDSCH, which is characterized in that it includes:

According to the first information, determine the PDSCH group to which the first PDSCH belongs, and/or the new acknowledgement feedback group indication NFI or downlink allocation indication DAI corresponding to the first PDSCH;

Wherein, the first PDSCH is a PDSCH without a corresponding physical downlink control channel PDCCH;

The first information includes at least one of the following:

Information indicated by higher layer signaling;

An indication of activating downlink control information DCI corresponding to the first PDSCH;

Information carried by the additional PDCCH;

Information stipulated in the agreement;

Information carried by the first PDSCH;

The NFI or DAI corresponding to the second PDSCH, the second PDSCH has a corresponding PDCCH, the second PDSCH is the nearest PDSCH before the first PDSCH, and the second PDSCH belongs to the same A PDSCH group.
The method according to claim 1, wherein the PDSCH group to which the first PDSCH belongs is the first PDSCH group, and the PDSCH in the first PDSCH group does not correspond to the PDCCH.
The method according to claim 1, wherein the determining the PDSCH group to which the first PDSCH belongs according to the first information comprises:

If the information carried by the additional PDCCH is not received, determine the PDSCH group to which the first PDSCH belongs according to the indication of activating the DCI corresponding to the first PDSCH or the information agreed by the protocol or the information indicated by the higher layer signaling ; Otherwise, determine the PDSCH group to which the first PDSCH belongs according to the received information carried by the additional PDCCH.
The method according to claim 1, wherein determining the NFI or DAI corresponding to the first PDSCH according to the first information comprises:

If the information carried by the additional PDCCH is not received, determine the NFI or DAI corresponding to the first PDSCH according to the indication of activating the DCI corresponding to the first PDSCH; otherwise, according to the received additional PDCCH Bearer information, determining the NFI or DAI corresponding to the first PDSCH;

or,

If the information carried by the additional PDCCH is not received, determine the NFI or DAI corresponding to the first PDSCH according to the NFI or DAI corresponding to the second PDSCH; otherwise, according to the information carried by the additional PDCCH received Information to determine the NFI or DAI corresponding to the first PDSCH.
The method according to claim 1, wherein the information carried by the first PDSCH includes at least one of the following:

The PDSCH group to which the first PDSCH belongs;

The NFI corresponding to the first PDSCH;

DAI corresponding to the first PDSCH;

The HARQ-ACK trigger field of the second PDSCH group, where the second PDSCH group is different from the PDSCH group to which the first PDSCH belongs;

The timing from the first PDSCH to HARQ-ACK feedback;

Physical uplink control channel PUCCH resource indication;

Modulation and coding strategy;

Redundant version.
A terminal, characterized in that it comprises:

The determining module is configured to determine, according to the first information, the PDSCH group to which the first PDSCH belongs, and/or the NFI or DAI corresponding to the first PDSCH;

Wherein, the first PDSCH is a PDSCH without corresponding PDCCH;

The first information includes at least one of the following:

Information indicated by higher layer signaling;

An indication of activating DCI corresponding to the first PDSCH;

Information carried by the additional PDCCH;

Information stipulated in the agreement;

Information carried by the first PDSCH;

The NFI or DAI corresponding to the second PDSCH, the second PDSCH has a corresponding PDCCH, the second PDSCH is the nearest PDSCH before the first PDSCH, and the second PDSCH belongs to the same A PDSCH group.
The terminal according to claim 6, wherein the PDSCH group to which the first PDSCH belongs is a first PDSCH group, and the PDSCH in the first PDSCH group does not correspond to a PDCCH.
The terminal according to claim 6, wherein the determining module determines the PDSCH group to which the first PDSCH belongs in the following manner:

If the additional PDCCH bearer information is not received, determine the PDSCH group to which the first PDSCH belongs according to the indication of activating the DCI corresponding to the first PDSCH; otherwise, according to the received additional PDCCH bearer To determine the PDSCH group to which the first PDSCH belongs.
The terminal according to claim 6, wherein the determining module determines the NFI or DAI corresponding to the first PDSCH by any one of the following methods:

If the information carried by the additional PDCCH is not received, determine the NFI or DAI corresponding to the first PDSCH according to the indication of activating the DCI corresponding to the first PDSCH; otherwise, according to the received additional PDCCH Bearer information, determining the NFI or DAI corresponding to the first PDSCH;

If the information carried by the additional PDCCH is not received, determine the NFI or DAI corresponding to the first PDSCH according to the NFI or DAI corresponding to the second PDSCH; otherwise, according to the information carried by the additional PDCCH received Information to determine the NFI or DAI corresponding to the first PDSCH.
A terminal, characterized by comprising: a processor, a memory, and a program stored on the memory and capable of running on the processor, and when the program is executed by the processor, the implementation is as claimed in claims 1 to 5. Steps of any one of the physical downlink shared channel processing methods.
A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the physical downlink according to any one of claims 1 to 5 is realized. The steps of the shared channel processing method.