Methods for DAI counting, methods for controlling DAI counting, terminals, and network equipment.

Abstract

Invention details;

Description

DAI counting method, DAI counting control method, terminal and network device

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202010360885.1 filed in China on April 30, 2020, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of communication technology, and in particular to a DAI counting method, a DAI counting control method, a terminal and a network device. BACKGROUND

[0004] With the development of communication technology, multiple physical downlink control channel (PDCCH) repeated transmissions are introduced in a new radio (NR) system, i.e., multiple PDCCHs schedule the same physical downlink shared channel (PDSCH) transmission multiple times. However, the same downlink assignment index (DAI) value can be used in multiple PDCCHs, and therefore a new DAI counting method is needed to adapt to the multiple PDCCH repeated transmission scenario.

[0005] SUMMARY

[0006] Embodiments of the present application provide a DAI counting method, a DAI counting control method, a terminal and a network device to solve the problem of how to count DAI in the multiple PDCCH repeated transmission scenario.

[0007] In a first aspect, embodiments of the present application provide a DAI counting method applied to a terminal, comprising:

[0008] In the case of configuring PDCCH repeated transmission, DAI counting is performed at a reference PDCCH monitoring opportunity.

[0009] In a second aspect, embodiments of the present application also provide a DAI counting control method applied to a network device, comprising:

[0010] In the case of configuring PDCCH repeated transmission for a terminal, target information is sent to the terminal, the target information being used by the terminal to determine a reference PDCCH monitoring opportunity and perform DAI counting at the reference PDCCH monitoring opportunity.

[0011] In a third aspect, the embodiments of the present application further provide a terminal, comprising:

[0012] The processing module is configured to, in the case that the PDCCH repetition transmission is configured, perform the DAI counting at the reference PDCCH monitoring occasion.

[0013] In a fourth aspect, the embodiments of the present application further provide a network device, comprising:

[0014] The sending module is configured to, in the case that the PDCCH repetition transmission is configured for the terminal, send target information to the terminal, wherein the target information is used by the terminal to determine the reference PDCCH monitoring occasion and perform the DAI counting at the reference PDCCH monitoring occasion.

[0015] In a fifth aspect, the embodiments of the present application further provide a terminal, comprising a memory, a processor, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions are executed by the processor to implement the steps in the DAI counting method.

[0016] In a sixth aspect, the embodiments of the present application further provide a network device, comprising a memory, a processor, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions are executed by the processor to implement the steps in the DAI counting control method.

[0017] In a seventh aspect, the embodiments of the present application further provide a readable storage medium, wherein the readable storage medium stores a program or instructions, and the program or instructions are executed by a processor to implement the steps in the DAI counting method or the steps in the DAI counting control method.

[0018] In an eighth aspect, the embodiments of the present application provide a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement the method in the first aspect or the second aspect.

[0019] The embodiments of the present application define the DAI counting at the reference PDCCH monitoring occasion, so that in the case of the PDCCH repetition transmission, the multiple HARQ-Ack bits do not need to be fed back for the multiple PDCCHs scheduling the same PDSCH, and in the case that the same DAI is detected, it is considered that there is no missed detection of the PDCCH. Therefore, the embodiments of the present application solve the DAI counting problem in the case of the PDCCH repetition transmission. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0021] FIG. 1 is a structure diagram of a network system to which the embodiments of the present application can be applied;

[0022] FIG. 2 is a flowchart of a DAI counting method provided by the embodiments of the present application;

[0023] FIG. 3 is a flowchart of a DAI counting control method provided by the embodiments of the present application;

[0024] FIG. 4 is a structure diagram of a terminal provided by the embodiments of the present application;

[0025] FIG. 5 is a structure diagram of a network device provided by the embodiments of the present application;

[0026] FIG. 6 is a structure diagram of another terminal provided by the embodiments of the present application;

[0027] FIG. 7 is a structure diagram of another network device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0028] The technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] The term "comprising" and any variation thereof in the specification and claims of the present application is intended to cover not exclusively including, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices. In addition, "and / or" is used in the specification and claims to mean at least one of the connected objects, for example, A and / or B means including A alone, B alone, and A and B both exist in three cases.

[0030] In the embodiments of the present application, the word "exemplary" or "for example" is used to mean serving as an example, instance, or illustration, and not necessarily to imply a preference as regards to one implementation example over to another. In other words, the word "exemplary" or "for example" is used herein to mean "one example among others" and not "preferred" or "superior" to other examples. Thus, each of the embodiments of the present application is not necessarily preferred or superior over other embodiments.

[0031] The embodiments of the present application are described below in conjunction with the accompanying drawings. The DAI counting method, the DAI counting control method, the terminal and the network device provided by the embodiments of the present application can be applied to a wireless communication system. The wireless communication system can be a 5G system, or an evolved long term evolution (eLTE) system, or a subsequent evolved communication system.

[0032] Please refer to FIG. 1, which is a structure diagram of a network system to which the embodiments of the present application can be applied. As shown in FIG. 1, the network system includes a terminal 11 and a network device 12. The terminal 11 can be a user terminal or other terminal-side device, such as a mobile phone, a tablet personal computer (PC), a laptop PC, a personal digital assistant (PDA), a mobile Internet device (MID), or a wearable device. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network device 12 can be a 5G base station, or a base station of a later version, or a base station in other communication systems, or a node B, an evolved node B, a transmission reception point (TRP), an access point (AP), or other terms in the field, as long as the same technical effects are achieved. The network device is not limited to specific technical terms. In addition, the network device 12 can be a master node (MN) or a secondary node (SN). It should be noted that the 5G base station is taken as an example in the embodiments of the present application, but the specific type of the network device is not limited.

[0033] For the convenience of understanding, some contents related to the embodiments of the present application are described below.

[0034] I. DAI counting method of dynamic codebook

[0035] Currently, two types of hybrid automatic repeat request acknowledgement (HARQ-ACK) codebooks can be supported, including type-1 and type-2. Among them, type-1 is a semi-static HARQ-ACK codebook, and type-2 is a dynamic HARQ-ACK codebook. For the semi-static HARQ-ACK codebook, a terminal (User Equipment, UE) determines the HARQ-ACK codebook according to the parameters such as the candidate PDSCH reception opportunity (candidate PDSCH reception occasion) configured by the radio resource control (RRC), the time domain resource allocation of the PDSCH (PDSCH-TimeDomainResourceAllocation), and the feedback timing of the PDSCH to HARQ-ACK (dl-DataToUL-ACK or PDSCH-toHARQ-timing). The HARQ-ACK codebook is determined according to all PDSCHs that may be fed back in a certain time slot, and the codebook is generally large because it may contain HARQs for actually scheduled and unscheduled PDSCHs. For the dynamic HARQ-ACK codebook, the UE determines the HARQ-ACK codebook according to the actually scheduled PDSCH, and the codebook size of the HARQ-ACK is generally smaller than that of the semi-static HARQ-ACK codebook because it only feeds back the actually scheduled PDSCH. Which type of codebook is used by the UE is determined by RRC configuration.

[0036] When using a dynamic HARQ-ACK codebook, in order to prevent the situation that the number of HARQ-ACK bits considered by the transceiver on both sides is inconsistent due to the UE failing to correctly detect the scheduled PDCCH, the network device includes DAI in the downlink control information (DCI). DAI can be divided into two parts: counter DAI (C-DAI) and total DAI (T-DAI) in a carrier aggregation scenario. The counter DAI is used to indicate the number of downlink transmissions up to the DCI scheduling downlink transmission, and the total DAI indicates the total number of downlink transmissions of all carriers up to the monitoring opportunity (MO) where the DCI is located. The UE determines the HARQ-Ack feedback codebook according to the received DAI.

[0037] Since there are only two bits for the resource in the DCI, no matter T-DAI or C-DAI, the UE can only determine less than 4 PDCCH miss detection through the information of DAI. For example, the following cases can be included:

[0038] Case 1: After the UE detects the PDCCH with C-DAI = 0, if the UE does not detect the PDCCH with C-DAI = 1, but detects the PDCCH with C-DAI = 2, it is considered that the PDCCH with C-DAI = 1 is missed, and the HARQ-Ack bit corresponding to the PDCCH with C-DAI = 1 is generated when generating the HARQ-Ack feedback codebook.

[0039] Case 2: If the UE detects the PDCCH with C-DAI = 0, if the UE does not detect the PDCCH with C-DAI = 1, 2, 3, but detects the PDCCH with C-DAI = 0, it is considered that the PDCCH with C-DAI = 1, 2, 3 is missed, and the HARQ-Ack bit corresponding to the PDCCH with C-DAI = 1, 2, 3 is generated when generating the HARQ-Ack feedback codebook. At the same time, since the DAI has only 2 bits, the value of C-DAI will be repeated without transmitting 4 PDCCHs, that is, the DAI completes a round of cycle, and the counter j is used to count the number of DAI value cycles to determine how many rounds the DAI value cycles, and to determine the number of bits of the HARQ-Ack codebook. If the UE detects the PDCCH with C-DAI = 0, if the UE does not detect the PDCCH with C-DAI = 1, 2, 3, but detects the PDCCH with C-DAI = 0, it is considered that the value of C-DAI completes a round of cycle, that is, the PDCCH with C-DAI = 1, 2, 3 is transmitted in the middle, at this time, the counter j = j + 1;

[0040] Case 3: If the UE detects the PDCCH with C-DAI = X, if the UE detects the PDCCH with C-DAI = Y, if Y ≤ X, it is considered that the value of DAI enters the next cycle, and the counter j = j + 1.

[0041] II. PDCCH repetition

[0042] If PDCCH transmission is introduced multiple times, that is, PDCCH is repeatedly transmitted, the same PDSCH transmission is scheduled, which can be a non-repeated PDSCH or a repeatedly transmitted PDSCH. The redundancy version (RV) of the repeatedly transmitted PDSCHs can be the same or different.

[0043] If multiple PDCCHs are used to schedule the same PDSCH transmission, and the DAI value is counted according to the order of the MOs of the PDCCHs, then according to the existing HARQ-Ack feedback and DAI counting rules, each PDCCH has corresponding HARQ-Ack feedback bits. For example, if two PDCCHs are used to schedule a PDSCH transmission, then HARQ-Ack feedback is required for both PDCCHs, which causes redundancy in the number of feedback bits and reduces the performance of the feedback. The transmission of the two PDCCHs can be repeated or non-repeated.

[0044] If the same DAI value is used in multiple PDCCHs, then according to the existing rules, the UE is considered to have missed some PDCCHs, and the counter j of the number of cycles of the DAI is j=j+1. However, since multiple PDCCHs are used for scheduling, the UE has not missed any PDCCHs. Therefore, in the case of introducing PDCCH repetition for PDSCH transmission, a new DAI counting method is needed to make the UE not need to feedback multiple HARQ-Ack bits for multiple PDCCHs scheduling the same PDSCH, and to avoid considering that there is a missed PDCCH when the same DAI is detected. This is described in detail in the following embodiments.

[0045] Referring to FIG. 2, which is a flowchart of a DAI counting method provided by an embodiment of the present application, the method is applied to a terminal. As shown in FIG. 2, the method includes the following steps:

[0046] In step 201, in the case of configuring PDCCH repetition transmission, DAI counting is performed at a reference PDCCH monitoring opportunity.

[0047] In this embodiment, the network device can configure whether the terminal performs PDCCH repetition transmission. The PDCCH repetition transmission can be understood as multiple PDCCHs scheduling the same PDSCH transmission, or the network configuring the UE to perform monitoring for scheduling the same PDSCH transmission at multiple PDCCH monitoring opportunities.

[0048] The reference PDCCH monitoring occasion can be any one of the PDCCH monitoring occasions corresponding to the multiple PDCCHs of the configured repeated transmission. The reference PDCCH monitoring occasion can be indicated by the network device or agreed by the protocol. Since the reference PDCCH monitoring occasion is defined, the DAI counting can be performed according to the monitoring occasion in which the detected PDCCH is located. Specifically, it can be determined whether the monitoring occasion in which the currently detected PDCCH is located is the reference PDCCH monitoring occasion. If the monitoring occasion is the reference PDCCH monitoring occasion, the DAI counting can be performed according to the DAI value carried by the detected PDCCH in the monitoring occasion. If the monitoring occasion is not the reference PDCCH monitoring occasion, the DAI counting is not performed in the monitoring occasion, or in other words, the DAI counting is not performed. If the DAI counting is performed, the detected DAI and the temporary DAI are compared. The DAI counting is not performed, that is, the detected DAI and the temporary DAI are not compared. The temporary DAI is the DAI value currently stored by the UE.

[0049] In the embodiment of the present application, the DAI counting is performed in the reference PDCCH monitoring occasion, so that in the multiple PDCCH repeated transmission scenario, it is not necessary to feed back multiple HARQ-Ack bits for the multiple PDCCHs scheduling the same PDSCH, and it is also avoided that the PDCCH misdetection is considered to exist in the case of detecting the same DAI. Therefore, the problem of DAI counting in the multiple PDCCH repeated transmission scenario is solved.

[0050] Optionally, in an embodiment, the reference PDCCH monitoring occasion includes any one of the following:

[0051] The PDCCH monitoring occasion indicated by the network device;

[0052] The first PDCCH monitoring occasion or the last PDCCH monitoring occasion in the M PDCCH monitoring occasions corresponding to the repeated M PDCCHs; wherein M is an integer greater than 1.

[0053] In an embodiment, the reference PDCCH monitoring occasion can be indicated by the network device or agreed by the protocol. For example, the network device can indicate the specific PDCCH monitoring occasion as the reference PDCCH monitoring occasion. Specifically, the network device can indicate the reference PDCCH monitoring occasion through RRC and DCI signaling. The network device can indicate the reference PDCCH monitoring occasion when configuring the terminal to perform PDCCH repeated transmission. The indicated reference monitoring occasion can be any one of the multiple PDCCH monitoring occasions of the configured repeated transmission.

[0054] In another embodiment, one of the multiple PDCCH monitoring occasions of the repeated PDCCHs can also be configured as the reference PDCCH monitoring occasion by protocol agreement. For example, the first PDCCH monitoring occasion or the last PDCCH monitoring occasion among the M PDCCH monitoring occasions corresponding to the repeated M PDCCHs.

[0055] Further, the position of the reference PDCCH monitoring occasion is determined according to any one of the following:

[0056] The first PDCCH monitoring occasion among the M PDCCH monitoring occasions corresponding to the repeated M PDCCHs, M being an integer greater than 1;

[0057] The first indication information carried by the PDCCH, the first indication information being used to indicate the sorting position of the PDCCH among the M PDCCHs.

[0058] In an embodiment, the network device can indicate the first PDCCH monitoring occasion among the M PDCCH monitoring occasions corresponding to the repeated M PDCCHs, and the terminal can determine the position of the reference PDCCH monitoring occasion after determining the first PDCCH monitoring occasion. Specifically, the network device can indicate in the PDCCH transmitted in the first PDCCH monitoring occasion that the PDCCH is the PDCCH transmitted in the first PDCCH monitoring occasion, for example, the network device can indicate in the PDCCH transmitted in the first PDCCH monitoring occasion that the PDCCH is the first PDCCH, which can be understood as the PDCCH transmitted in the first PDCCH monitoring occasion among the M PDCCH monitoring occasions, or can be understood as the PDCCH transmitted for the first time among the M PDCCHs transmitted in the M PDCCH monitoring occasions. If the last PDCCH monitoring occasion is the reference monitoring occasion, the terminal can determine the other sorted PDCCH monitoring occasions according to the first PDCCH monitoring occasion, for example, the terminal can determine the last PDCCH monitoring occasion as the last PDCCH monitoring occasion after the first PDCCH monitoring occasion as the reference PDCCH monitoring occasion. Of course, the position of the first PDCCH monitoring occasion can also be indicated by other signaling.

[0059] In another embodiment, the first indication information for indicating the order position of the PDCCH in the M PDCCHs can be directly carried in the PDCCH. In this embodiment, the order position can be understood as the position of the PDCCH transmission in the configured M PDCCH transmissions, such as the Nth PDCCH transmission or the Nth PDCCH. Wherein, the Nth PDCCH transmission can be understood as the PDCCH transmitted in the Nth PDCCH monitoring opportunity corresponding to the M repeated PDCCHs, and N is a positive integer less than or equal to M. For example, referring to the third PDCCH monitoring opportunity, only in the third PDCCH transmission or the third PDCCH monitoring opportunity indicated by the first indication information in the monitored PDCCH, the DAI counting is performed in the monitoring opportunity corresponding to the PDCCH, and the DAI counting is not performed in the remaining PDCCH monitoring opportunities. Or, the terminal detects any one of the M PDCCH monitoring opportunities, and the first indication information is carried in the PDCCH, and then the terminal can determine the reference PDCCH monitoring opportunity according to the indication information. For example, the terminal detects that the first indication information in the PDCCH indicates that the PDCCH is the N-1th PDCCH transmission or the N-1th PDCCH monitoring opportunity, and then the terminal can determine that the next PDCCH monitoring opportunity is the Nth PDCCH monitoring opportunity, that is, the Nth PDCCH monitoring opportunity is determined as the reference PDCCH monitoring opportunity. Similarly, if the first PDCCH monitoring opportunity or the first PDCCH transmission is the reference PDCCH monitoring opportunity, the terminal can also recursively determine the reference PDCCH monitoring opportunity from the first PDCCH monitoring opportunity.

[0060] In another embodiment, an indication information can be introduced in the PDCCH for indicating whether the DAI field in the PDCCH is counted by the terminal. If the information indicates that the DAI counting is performed, the UE performs the DAI counting; otherwise, the terminal does not perform the DAI counting, that is, the UE ignores the DAI value in the current PDCCH monitoring opportunity. Preferably, the method can not be limited to the network configured with PDCCH repeated transmission or multiple PDCCH monitoring opportunities for detecting the scheduling information of the same PDSCH.

[0061] It should be understood that the DAI values in the repeated PDCCHs can be the same or different. In this embodiment, the DAI counting in the reference PDCCH monitoring opportunity includes:

[0062] In the case that the DAI values in the repeated M PDCCHs are the same, the DAI value in the detected PDCCH is counted in the reference PDCCH monitoring opportunity.

[0063] That is, in the embodiment, in the repeated M PDCCHs, for the multiple PDCCHs with the same DAI value, only 1 DAI counting is performed.

[0064] In the embodiment, when the DAI counting is performed in the reference PDCCH monitoring opportunity, the DAI value corresponding to the DAI carried by any one of the M PDCCHs can be detected in the reference monitoring opportunity, or the DAI value can be detected before the reference monitoring opportunity, which is not limited further herein.

[0065] Further, in an embodiment, the method further comprises:

[0066] determining whether to count the DAI cycle number counter.

[0067] In the embodiment, since the DAI usually adopts a small number of bits, for example, only 2 bits. Then the C-DAI value is repeated without transmitting 4 PDCCHs, that is, the DAI completes a cycle, and the counter j is used to count the number of DAI value cycles, to determine how many cycles the DAI value has cycled, and to determine the number of bits of the HARQ-Ack codebook. Among them, the 4 PDCCHs refer to the need to send 4 PDCCHs, and each PDCCH has multiple repeated transmissions, that is, each PDCCH has multiple PDCCH monitoring opportunities. It should be understood that when the number of value cycles is counted, each time the count operation can be added 1.

[0068] It should be understood that the determination of whether to count the DAI cycle number counter includes:

[0069] In the case of meeting the preset condition, the DAI cycle number counter does not count;

[0070] Among them, the preset condition includes:

[0071] The PDCCH monitoring opportunity for PDCCH repeated transmission detects N PDCCHs, and the N PDCCHs carry the same DAI value.

[0072] Since the multiple PDCCHs with the same DAI value do not count the number of DAI value cycles, it is avoided to be misunderstood as missing PDCCH detection.

[0073] Optionally, in an embodiment, the preset condition further includes:

[0074] The physical downlink shared channel PDSCH scheduling information scheduled by the N PDCCHs is the same.

[0075] It should be noted that the PDSCH scheduling information can include at least one of the following: a new data indicator (NDI), a HARQ process number, a resource of the PDSCH, a transport block size, a redundancy version, a priority of a HARQ codebook, and a modulation and coding scheme (MCS). The DAI can include at least one of a counter DAI and a total DAI.

[0076] The resource of the PDSCH can include at least one of the following: a time-frequency resource, a carrier, a mapping manner, a demodulation reference signal (DMRS), and a resource allocation manner.

[0077] Further, in an embodiment, after the DAI counting at the reference PDCCH monitoring occasion, the method further includes:

[0078] According to the DAI values in the detected L PDCCHs and the DCI repetition count information in the L PDCCHs, a hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook is determined, L being a positive integer greater than 1.

[0079] In this embodiment, when the UE detects PDCCHs with the same or different DAI values and the PDSCH scheduling information of the detected L PDCCHs is the same, a hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook is determined according to the DAI values in the detected L PDCCHs and the DCI repetition count information in the L PDCCHs.

[0080] The manner of determining the HARQ-ACK codebook can be that, for PDCCHs with the same PDSCH scheduling information, one HARQ-ACK feedback information is fed back.

[0081] In this embodiment, when X1 is not equal to Y1, the terminal understands that mod(X1-N1,X) DCIs are lost. X1 and Y1 satisfy:

[0082] X1 = Mod(x,X);

[0083] Y1 = Mod(y,Y);

[0084] X = 2^Q, Q being a DAI bit length; or X = 4.

[0085] Y is the number of repeated transmissions of the PDCCH or the maximum number of repeated transmissions; or Y = 2^P, P is the bit length of the field indicating the repetition number information in the DCI (DCI repetition number field bit length), which is used to indicate the number of the transmission of the current PDCCH in multiple transmissions, or the number of the monitoring opportunity of the PDCCH in multiple PDCCH monitoring opportunities;

[0086] x is the difference between the DAI value detected by the terminal and the stored DAI value, wherein after detecting the PDCCH each time, the DAI value carried in the PDCCH is compared with the currently stored DAI value to obtain the difference x, and then the DAI value carried in the currently detected PDCCH is stored to update the currently stored DAI value;

[0087] y is the difference between the DCI repetition count information of the PDCCH with the same PDSCH scheduling information detected by the terminal and the stored DCI repetition count information of the PDCCH.

[0088] In order to better understand the present application, the implementation process of the present application will be described in detail in combination with specific examples.

[0089] In embodiment 1, if the network configures the UE to use the PDCCH repetition mode to schedule the PDSCH, the PDCCH repetition mode to schedule the PDSCH can also be described as transmitting multiple PDCCHs to schedule the same PDSCH transmission, and the PDSCH transmission can be a non-repeated PDSCH or a repeatedly transmitted PDSCH, and the rv of the repeatedly transmitted multiple PDSCHs can be the same or different.

[0090] For example, the network configures the PDCCH to be repeated at most N times, and the UE performs PDCCH monitoring in N monitoring opportunities. If the UE detects the PDCCH in any one of the PDCCH monitoring opportunities, the DAI value in the PDCCH is taken as the DAI value of the reference PDCCH monitoring opportunity, and the reference PDCCH monitoring opportunity is one of the N monitoring opportunities, which can be one of the monitoring opportunities indicated by the network, or the first monitoring opportunity or the last monitoring opportunity in the N monitoring opportunities.

[0091] In an embodiment, the PDCCH is repeatedly transmitted at most twice, and the DAI value in the DCI detected by the UE in the two PDCCH monitoring opportunities is taken as the DAI value in the PDCCH detected in the last PDCCH monitoring opportunity. That is, if the UE detects the PDCCH in the first monitoring opportunity, the DAI counting is not performed in the current monitoring opportunity, and the DAI counting is performed in the last PDCCH monitoring opportunity.

[0092] In another embodiment, the PDCCH is repeated at most twice, and the DAI value in the DCI detected by the UE in the two PDCCH MOs is the DAI value in the PDCCH detected in the first monitoring occasion. That is, if the UE detects a PDCCH in the second monitoring occasion, it does not count the DAI in the current monitoring occasion, and uses the DAI for counting in the first PDCCH monitoring occasion.

[0093] Further, since multiple PDCCHs are used to schedule the same PDSCH, when the UE detects that the DAI values in the multiple PDCCHs are the same, the UE does not increase the counter of the number of DAI counter cycles.

[0094] Further, the UE does not increase the counter of the number of DAI counter cycles when it detects that the PDSCH scheduling information in multiple DCIs is the same.

[0095] The UE determines the position of the HARQ-Ack feedback bit of the scheduled PDSCH in the HARQ-Ack codebook according to the reference monitoring occasion and the DAI value. If the reference monitoring occasion is the first PDCCH monitoring occasion, the position of the HARQ-Ack feedback bit corresponding to the scheduled PDSCH in the HARQ-Ack codebook is determined according to the first monitoring occasion. If the reference monitoring occasion is the last PDCCH monitoring occasion, the position of the HARQ-Ack feedback bit corresponding to the scheduled PDSCH in the HARQ-Ack codebook is determined according to the last monitoring occasion.

[0096] Optionally, the above-mentioned DAI includes a counter DAI or a total DAI

[0097] Embodiment 2: Method for UE to determine the order of PDCCH monitoring occasions

[0098] According to the starting monitoring occasion indicated by the network, for example, the network can indicate that the starting PDCCH monitoring occasion for PDCCH repetition transmission is the first monitoring occasion, and then the Nth PDCCH monitoring occasion is sequentially determined according to the starting PDCCH monitoring occasion in the consecutive monitoring occasions configured by the network. The multiple monitoring occasions can satisfy at least one of the following conditions:

[0099] The monitoring occasions belong to the same serving cell or different serving cells, and the monitoring occasions of different serving cells are sorted according to the size of the index value of the serving cell;

[0100] The same TRP or different TRPs, different TRPs are sorted according to the index value of the number of TRPs;

[0101] The same control resource set (CORESET) or different CORESETs, and the monitoring opportunities of different CORESETs are sorted according to the CORESET index or the control resource set pool index;

[0102] The same search space set or different search space sets, and the monitoring opportunities of different search space sets are sorted according to the index value of the search space;

[0103] The same slot or PDCCH monitoring span or different slots or PDCCH monitoring spans, and different slots or PDCCH monitoring spans are sorted according to the index value of the slot or PDCCH monitoring span.

[0104] Optionally, the indication information of the current PDCCH transmission times can be included in the DCI field. The UE can determine whether the PDCCH monitoring opportunity is the reference PDCCH monitoring opportunity according to the indication of the current PDCCH transmission times in the PDCCH.

[0105] Embodiment 3: The network can schedule the same PDSCH transmission in multiple PDCCHs, that is, the UE can detect the same PDSCH scheduling information in multiple PDCCHs. In multiple PDCCHs, the indication information of the PDCCH repetition times is P bits, and the bit number of the DAI is Q bits. For multiple DCIs with the same PDSCH scheduling information, the DAI does not require to be the same, for example, the DAI can be counted together with the DCI scheduling the same or different processes of PDSCH. The UE detects one PDCCH each time, which is 1 in the DCI scheduling a certain PDSCH. The UE stores the DAI value and the DCI repetition times value in the DCI. The initial value of the value stored by the UE is 0.

[0106] The UE determines the HARQ-Ack codebook by combining the DAI value in the detected PDCCH and the DCI repetition count information. For PDCCHs with the same PDSCH scheduling information, the UE feeds back the HARQ-Ack feedback information once. That is, although the DAI values in the repeated PDCCHs are different, the HARQ-Ack feedback corresponding to the multiple DAI values is transmitted only once in the information bits in the HARQ-Ack codebook.

[0107] If the difference between the DAI value detected by the UE and the stored DAI value is x, and the difference between the DCI repetition count information of the PDCCH with the same PDSCH scheduling information detected by the UE and the stored DCI repetition count information of the PDCCH is y, X1 = Mod(x, X) is not equal to Y1 = Mod(y, Y), the UE considers that mod(X1-Y1, X) DCIs are missing, and generates the HARQ-Ack codebook. Where X = 2^Q, Y = 2^P. The UE considers that X PDSCHs of other processes are missing. Then the UE sets the feedback information bit corresponding to this DCI to NACK in the HARQ-Ack codebook.

[0108] For example, P = 2, Q = 2, the UE detects a DCI with DAI = 0 and DCI repetition count = 0. If the UE detects another DCI with the same PDSCH scheduling information, where DAI = 2 and PDCCH repetition count = 1, the UE considers that X1 = 2 and Y1 = 1, and considers that one PDSCH of other processes is missing. Then the UE sets the feedback information bit corresponding to this DCI to NACK in the HARQ-Ack codebook.

[0109] Optionally, for the case where PDCCH repetition is configured, the PDSCH not detected by the above method is an SPS PDSCH, or a PDSCH scheduled by a non-repeated PDCCH.

[0110] Referring to FIG. 3, FIG. 3 is a flowchart of another DAI counting control method provided by an embodiment of the present application, which is applied to a network device. As shown in FIG. 3, the method includes the following steps:

[0111] In a case where PDCCH repetition transmission is configured for a terminal, target information is sent to the terminal, the target information being used by the terminal to determine a reference PDCCH monitoring opportunity and perform DAI counting in the reference PDCCH monitoring opportunity.

[0112] Optionally, the target information includes any of the following:

[0113] The first indication information carried by the PDCCH, the first indication information being used for indicating a sorting position of the PDCCH in the M PDCCHs;

[0114] The second indication information is used for indicating a first PDCCH monitoring opportunity in M PDCCH monitoring opportunities corresponding to the M PDCCHs, and M is an integer greater than 1.

[0115] Optionally, the reference PDCCH monitoring opportunity includes any of the following:

[0116] The PDCCH monitoring opportunity indicated by the network device.

[0117] The first PDCCH monitoring opportunity or the last PDCCH monitoring opportunity in M PDCCH monitoring opportunities corresponding to the M PDCCHs, and M is an integer greater than 1.

[0118] It should be noted that the embodiment is the implementation of the terminal corresponding to the embodiment shown in FIG. 2, and the specific implementation can refer to the related description of the embodiment shown in FIG. 2 and achieve the same beneficial effects. In order to avoid repeated description, it will not be described here.

[0119] Please refer to FIG. 4, which is a structure diagram of a terminal provided by an embodiment of the present application. As shown in FIG. 4, the terminal 400 includes:

[0120] The processing module 401 is configured to perform downlink assignment index (DAI) counting at a reference PDCCH monitoring opportunity in a case where PDCCH repetition transmission is configured.

[0121] Optionally, the reference PDCCH monitoring opportunity includes any of the following:

[0122] The PDCCH monitoring opportunity indicated by the network device.

[0123] The first PDCCH monitoring opportunity or the last PDCCH monitoring opportunity in M PDCCH monitoring opportunities corresponding to the M PDCCHs, and M is an integer greater than 1.

[0124] Optionally, the position of the reference PDCCH monitoring opportunity is determined according to any of the following:

[0125] The first PDCCH monitoring opportunity in M PDCCH monitoring opportunities corresponding to the M PDCCHs, and M is an integer greater than 1.

[0126] The first indication information carried by the PDCCH, the first indication information being used for indicating a sorting position of the PDCCH in the M PDCCHs.

[0127] Optionally, the DAI counting at the reference PDCCH monitoring occasion comprises:

[0128] In a case where the DAI values in the M PDCCHs are same, the DAI value in the detected PDCCH is counted at the reference PDCCH monitoring occasion.

[0129] Optionally, the processing module 401 is further configured to determine whether to count the counter of the DAI cycle number.

[0130] Optionally, the processing module 401 is specifically configured to, in a case where a preset condition is met, not count the counter of the DAI cycle number.

[0131] The preset condition comprises:

[0132] In a case where N PDCCHs are detected at the PDCCH monitoring occasion where the PDCCH is repeatedly transmitted, and the DAI values carried by the N PDCCHs are same.

[0133] Optionally, the preset condition further comprises:

[0134] The PDSCH scheduling information scheduled by the N PDCCHs is same.

[0135] Optionally, the PDSCH scheduling information comprises at least one of the following: a new data indicator, a HARQ process number, a PDSCH resource, a transport block size, a redundancy version, a HARQ codebook priority, and a modulation and coding scheme.

[0136] Optionally, after the DAI counting at the reference PDCCH monitoring occasion, the method further comprises:

[0137] According to the DAI value in the detected L PDCCHs and the DCI repetition number counting information in the L PDCCHs, a HARQ-ACK codebook is determined, L is a positive integer greater than 1.

[0138] Optionally, the DAI comprises at least one of a counter DAI and a total number DAI.

[0139] The terminal provided by the embodiments of the present application can implement each process implemented by the terminal in the method embodiment of FIG. 2, and thus details are not repeated here.

[0140] Please refer to FIG. 5, which is a structure diagram of a network device provided by an embodiment of the present application, as shown in FIG. 5, the network device 500 comprises:

[0141] The sending module 501 is configured to send target information to the terminal in a case where PDCCH repetition transmission is configured for the terminal, and the target information is used by the terminal to determine a reference PDCCH monitoring opportunity and perform DAI counting in the reference PDCCH monitoring opportunity.

[0142] Optionally, the target information includes any of the following:

[0143] The first indication information carried by the PDCCH, the first indication information being used to indicate a sorting position of the PDCCH in M PDCCHs;

[0144] The second indication information is used to indicate a first PDCCH monitoring opportunity in M PDCCH monitoring opportunities corresponding to the repeated M PDCCHs, and M is an integer greater than 1.

[0145] Optionally, the reference PDCCH monitoring opportunity includes any of the following:

[0146] A PDCCH monitoring opportunity indicated by the network device;

[0147] A first PDCCH monitoring opportunity or a last PDCCH monitoring opportunity in M PDCCH monitoring opportunities corresponding to the repeated M PDCCHs, and M is an integer greater than 1.

[0148] The network device provided in the embodiments of the present application can implement each process implemented by the network device in the method embodiment of FIG. 3, and thus details are not repeated here.

[0149] FIG. 6 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present application,

[0150] The terminal 600 includes, but is not limited to, a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, a power supply 611, and the like. Those skilled in the art can understand that the terminal structure shown in FIG. 6 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than shown, or combine certain components, or different component arrangements.

[0151] The processor 610 is configured to perform DAI counting in a reference PDCCH monitoring opportunity in a case where PDCCH repetition transmission is configured.

[0152] It should be understood that the processor 610 and the radio frequency unit 601 in the above embodiments can implement each process implemented by the terminal in the method embodiment of FIG. 2, and thus details are not repeated here.

[0153] It should be understood that in the embodiments of the present application, the radio frequency unit 601 can be used for receiving and transmitting signals in the process of information transmission or communication. Specifically, after receiving the downlink data from the base station, the radio frequency unit 601 processes the data for the processor 610. In addition, the radio frequency unit 601 transmits the uplink data to the base station. Generally, the radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 601 can also communicate with the network and other devices through a wireless communication system.

[0154] The terminal provides the user with wireless broadband Internet access through the network module 602, such as helping the user to send and receive emails, browse web pages, and access streaming media, etc.

[0155] The audio output unit 603 can convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Moreover, the audio output unit 603 can also provide audio output related to a specific function performed by the terminal 600 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, and a receiver, etc.

[0156] The input unit 604 is used to receive audio or video signals. The input unit 604 can include a graphics processor (GPU) 6041 and a microphone 6042. The graphics processor 6041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 606. The image frame processed by the graphics processor 6041 can be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 601 in the case of a telephone call mode.

[0157] The terminal 600 further includes at least one sensor 605, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 6061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 6061 and / or the backlight when the terminal 600 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), and when at rest, can detect the magnitude and direction of gravity, and can be used to identify the terminal posture (such as screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), and the like. The sensor 605 can also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like, which will not be described here.

[0158] The display unit 606 is configured to display information input by a user or information provided to the user. The display unit 606 can include a display panel 6061, which can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0159] The user input unit 607 can be configured to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. The touch panel 6071, also known as a touch screen, can collect touch operations of a user thereon or therearound (such as operations of the user using a finger, a stylus, or any suitable object or accessory on or near the touch panel 6071). The touch panel 6071 can include two parts, a touch detection device and a touch controller. The touch detection device detects the touch position of the user and detects signals caused by the touch operation, and transmits the signals to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch coordinates, and sends it to the processor 610, receives commands from the processor 610 and executes them. In addition, the touch panel 6071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 6071, the user input unit 607 can also include other input devices 6072. Specifically, the other input devices 6072 can include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, on-off buttons, etc.), trackballs, mice, joysticks, and the like, which will not be described here.

[0160] Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation thereon or in the vicinity thereof, transmits the touch event to the processor 610 to determine the type of the touch event, and then the processor 610 provides corresponding visual output on the display panel 6061 according to the type of the touch event. Although in FIG. 6, the touch panel 6071 and the display panel 6061 are implemented as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 6071 and the display panel 6061 can be integrated to realize the input and output functions of the terminal, which is not limited here.

[0161] The interface unit 608 is an interface for connecting external devices with the terminal 600. For example, the external devices can include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and the like. The interface unit 608 can be used to receive input (e.g., data information, power, and the like) from external devices and transmit the received input to one or more elements within the terminal 600, or can be used to transmit data between the terminal 600 and external devices.

[0162] The memory 609 can be used to store software programs and various data. The memory 609 can mainly include a program storage area and a data storage area, wherein the program storage area can store operating systems, application programs (such as sound play functions, image play functions, and the like) required by at least one function, and the like; the data storage area can store data (such as audio data, phone books, and the like) created according to the use of the mobile phone, and the like. In addition, the memory 609 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0163] The processor 610 is the control center of the terminal, connects all parts of the terminal through various interfaces and lines, executes various functions of the terminal and processes data by running or executing software programs and / or modules stored in the memory 609 and calling data stored in the memory 609, and thus monitors the terminal as a whole. The processor 610 can include one or more processing units; preferably, the processor 610 can integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and application programs, and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 610.

[0164] The terminal 600 can also include a power supply 611, such as a battery, to power the various components of the terminal 600. Preferably, the power supply 611 is coupled to the processor 610 via a power management system to manage charging, discharging, and power consumption management, etc.

[0165] In addition, the terminal 600 includes some function modules which are not shown here and will not be described here.

[0166] Preferably, the embodiment of the application further provides a terminal, comprising a processor 610, a memory 609, a program or instruction stored in the memory 609 and executable in the processor 610, which realizes each process of the above-mentioned DAI counting method embodiment and achieves the same technical effects when executed by the processor 610. To avoid repetition, it will not be described here.

[0167] Referring to FIG. 7, FIG. 7 is a structure diagram of another network device provided by the embodiment of the application. As shown in FIG. 7, the network device 700 comprises a processor 701, a transceiver 702, a memory 703 and a bus interface, wherein:

[0168] The transceiver 702 is configured to send target information to the terminal in the case that the terminal is configured with PDCCH repetition transmission, and the target information is used for the terminal to determine a reference PDCCH monitoring opportunity and perform DAI counting in the reference PDCCH monitoring opportunity.

[0169] It should be understood that the processor 701 and the transceiver 702 in the embodiment can realize each process of the network device in the method embodiment of FIG. 3, and to avoid repetition, it will not be described here.

[0170] In FIG. 7, the bus architecture can include any number of interconnecting buses and bridges, and the various circuitry represented by the processor 701 and the memory 703 is linked by one or more buses, which can be implemented using any suitable bus structure, as will be appreciated by those skilled in the art. The bus architecture can also link various other circuitry, which is well known, such as peripheral devices, voltage regulators, power management circuitry, and the like, and therefore, further description of the bus architecture will not be provided herein. The bus interface provides an interface to the bus architecture. The transceiver 702 can be multiple elements, i.e., including a transmitter and a receiver, which provide a means for communicating with various other apparatuses over a transmission medium. The user interface 704 can also be an interface that can be externally and internally connected to the required device, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0171] The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 can store data used by the processor 701 in performing operations.

[0172] Preferably, the embodiments of the network device further comprise a processor 701, a memory 703, and a program or instruction stored in the memory 703 and executable on the processor 701, which, when executed by the processor 701, implements each process of the above-mentioned DAI counting control method embodiments and achieves the same technical effects. To avoid repetition, details are not described herein.

[0173] The embodiments of the present application further provide a readable storage medium, which stores a program or instruction, which, when executed by a processor, implements each process of the network device side DAI counting control method embodiments provided by the embodiments of the present application or each process of the terminal side DAI counting method embodiments provided by the embodiments of the present application and achieves the same technical effects. To avoid repetition, details are not described herein. The readable storage medium is, for example, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, etc.

[0174] The embodiments of the present application further provide a chip, which comprises a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to execute a program or instruction to implement each process of the above-mentioned DAI counting method or DAI counting control method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0175] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-level chip, a system chip, a chip system or a system-on-chip, etc. It should be noted that in this document, the terms "comprise", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices comprising a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to the order of performing functions as shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0176] Those skilled in the art can clearly understand the above-mentioned embodiment method can be realized by means of software and the necessary general hardware platform, of course, also can be through hardware, but many cases the former is the better embodiment. Based on such understanding, the technical solutions of the present application essentially or say the part of the prior art contribution can be embodied in the form of software products, the computer software product is stored in a storage medium (such as ROM / RAM, magnetic disc, optical disc), including a number of instructions to make a terminal (may be a mobile phone, computer, server, air conditioner, or base station, etc.) executes the method described in various embodiments of the present application.

[0177] The embodiments of the present application are described above in conjunction with the drawings, but the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, but not limited, those skilled in the art can make many forms without departing from the purpose of the present application and the scope of the claims under the inspiration of the present application, all belong to the protection of the present application.

Claims

1. The method of counting the DAI as a link-down configuration index, applied to the terminal, consists of:

1. In the case where the recurrence of the PDCCH as a physical link-down control channel is formatted, add the DAI count to the PDCCH reference tracking opportunity.

2. The method according to claim 1, where the PDCCH reference tracking opportunity consists of one of the following: the PDCCH tracking opportunity indicated by the network device; or the first PDCCH tracking opportunity or the last PDCCH tracking opportunity in the PDCCH tracking opportunities relative to the PDCCHs in the recurrence, where M is an integer greater than 13.Method according to Claim 1, where the position of the PDCCH reference tracing opportunity is determined based on one of the following: the first PDCCH tracing opportunity in the MPDCCH tracing opportunities relative to the MPDCCHS in the iteration, where M is an integer greater than 1; or the first identification information delivered by the PDCCH, where the first identification information is used to indicate the sequence number position of the PDCCH in the MPDCCHS.

4. Method according to Claim 1, where the incrementing of the DAI count in the PDCCH reference tracing opportunity includes: in the case where the MPDCCHs in the iteration have the same DAI value, the incrementing of the DAI count in the PDCCH reference tracing opportunity for the detected DAI value in the PDCCH.

5. Method according to Claim 1, which includes additional: determining whether to increment the DAI cycle counter count. 6.Method according to claim 5, where the determination of whether to increment the DAI cycle counter is included: if the predefined condition is met, skipping the increment of the DAI cycle counter, where the predefined condition is included: NPDCCHS is detected on the occasion of PDCCH monitoring for PDCCH recurrence, NPDCCHS delivering the same DAI value.

7. Method according to claim 6, where the predefined condition is additionally included: NPDCCH has PDSCH scheduling information that is the same physically linked allocated channel.

8. Method according to claim 7, where the PDSCH scheduling information includes at least one of the following: new information indicator, number of HARQ processes, PDSCH resources, transport block size, redundant version, HARQ codebook priority, and coding molecule and scheme.9.The method under claim 1, whereby after adding the DAI count to the PDCCH monitoring opportunity, the method is further integrated with: the determination of the HARQ-ACK codebook as a response to the hybrid automatic repetition request based on the DAI values ​​in the detected LPDCCHs and the number of repetitions of DCI as downlink control information counted in the LPDCCHs, where L is a positive integer greater than 10. The method under claim 1, where the DAI consists of at least one DAI counter and all DAIs.

11. The method of controlling the DAI count as a downlink configuration index, applied to the network device, which includes: in the case where the repetition of the PDCCH as a physical downlink control channel is formatted for the terminal, the transmission of target information to the terminal, where the target information is used for the terminal to determine the PDCCH monitoring opportunity in order to add the DAI count to the PDCCH monitoring opportunity.12.Method according to Claim 11, where the target information consists of one of the following: the primary identification information delivered by the PDCCH, where the primary identification information is used to identify the serial number position of the PDCCH in the MPDCCHs in recurrence, and M is an integer greater than 1; or the secondary identification information is used to identify the opportunity of the first PDCCH to be monitored in the MPDCCH monitoring opportunities relative to the MPDCCHs in recurrence, where M is an integer greater than 113. Method according to Claim 11, where the reference PDCCH monitoring opportunity consists of one of the following: the opportunity of the PDCCH to be monitored by the network device; or the opportunity of the first PDCCH to be monitored or the opportunity of the last PDCCH to be monitored in the MPDCCH monitoring opportunities relative to the MPDCCHs in recurrence, where M is an integer greater than 114.The terminal, comprising: a processing module, formatted, where the recurrence of the PDCCH as a physical link-down control channel is formatted, adding a DAI count as a link-down configuration index to the PDCCH reference tracking opportunity 15. The terminal, pursuant to claim 14, where the PDCCH reference tracking opportunity comprises one of the following: the PDCCH tracking opportunity indicated by the network device; or the first PDCCH tracking opportunity or the last PDCCH tracking opportunity in the MPDCCH tracking opportunities relative to the MPDCCHs in the recurrence, where M is an integer greater than 116.The terminal under claim 14, where the position of the PDCCH reference tracking opportunity is determined by one of the following: the first PDCCH tracking opportunity in the MPDCCH tracking opportunities relative to the MPDCCHs in recurrence, where M is an integer greater than 1; or the first indication information transmitted by the PDCCH, where the first indication information is used to indicate the serial number position of the PDCCH in MPDCCHS17. The network device, comprising: a transmission module, which, in the case where the recurrence of the PDCCH is a physical link-down control channel, is formatted for the terminal, transmits the target information to the terminal, where the target information is used for the terminal to determine the PDCCH reference tracking opportunity in order to add the DAI count, which is a link-down configuration index, to the PDCCH reference tracking opportunity18.The network device under claim 17, where the target information consists of one of the following: the primary identification information transmitted by the PDCCH, where the primary identification information is used to identify the serial number position of the PDCCH in MPDCCHS; or the secondary identification information is used to identify the opportunity of the first PDCCH to be monitored in the MPDCCH monitoring opportunities relative to the MPDCCHs in recurrence, where M is an integer greater than 119. The network device under claim 18, where the reference PDCCH monitoring opportunity consists of one of the following: the opportunity of the PDCCH to be monitored by the network device; or the opportunity of the first PDCCH to be monitored or the opportunity of the last PDCCH to be monitored in the MPDCCH monitoring opportunities relative to the MPDCCHs in recurrence, where M is an integer greater than 120.A terminal, which includes memory, a processor, and programs or instructions stored in memory and capable of execution on the processor, where, when the program or instruction is executed by the processor, a procedure of the DAI indexing method under any of claims 1 through 10 is executed.

21. A network device, which includes memory, a processor, and programs or instructions stored in memory and capable of execution on the processor, where, when the program or instruction is executed by the processor, a procedure of the DAI indexing method under any of claims 11 through 13 is executed.22.A readable storage medium, where the readable storage medium stores programs or instructions, and when the program or instruction has been executed by the processor, the procedure of the DAI counting method, which is a linked index configuration according to any one of claims 1 to 10, or the procedure of the DAI counting control method according to any one of claims 1 to 13, has been executed.

23. A chip, where the chip consists of a processor and a communication interface, where the communication interface is connected to the processor, and the processor is 24. Terminals, formatted to execute a DAI counting method that is a linked-down index configuration method under any of the claims 1 through 10, or a DAI counting control method under any of the claims 11 through 13.

25. Network devices, formatted to execute a DAI counting control method that is a linked-down index configuration method under any of the claims 11 through 13. 26.Computer program products, whereby the computer program products are executed by at least one processor to perform the DAI counting method as a linked-down index configuration according to any one of the claims 10 to 11 or the DAI counting control method according to any one of the claims 11 to 13;

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