WO2021164727A1 - Method for transmitting downlink control information, and communication apparatus - Google Patents

Abstract

Disclosed in embodiments of the present invention are a method for transmitting downlink control information, and a communication apparatus. The method comprises: transmitting first downlink control information (DCI), wherein the first DCI carries first counting information for counting DCI in joint DCI, and the joint DCI is used to schedule multiple component carriers or cells.

Description

Method and communication equipment for transmitting downlink control information

cross reference

The present invention claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 202010103105.5, and the invention title is "a method and communication device for transmitting downlink control information" on February 19, 2020. The entire content of the application is approved The citation is incorporated in the present invention.

Technical field

The embodiments of the present invention relate to the field of communications, and in particular to a method and communication equipment for transmitting downlink control information.

Background technique

In view of enhancing the coverage of the control channel, cells are generally deployed in low frequency band carriers. However, the bandwidth of low-band carriers is usually insufficient and has been deployed in large numbers to other systems, such as the Long Term Evolution (LTE) system. The downlink signaling overhead of the cell accounts for a large proportion, which affects the system capacity.

Based on this, the New Radio (NR) supports a downlink control information (Downlink Control Information, DCI) to simultaneously schedule multiple carriers (Component Carrier, CC) or cell design, that is, joint DCI (joint DCI) to reduce the downlink Control signaling overhead. However, the current DCI design only supports one DCI for scheduling one cell. When a joint DCI schedules multiple carriers or cells, the user equipment (User Equipment, UE) cannot correctly determine the number of DCIs.

Summary of the invention

The purpose of the embodiments of the present invention is to provide a method and communication equipment for transmitting downlink control information, so as to enable the UE to correctly determine the number of DCIs.

In a first aspect, a method for transmitting downlink control information is provided, the method is executed by a communication device, and the method includes: transmitting first downlink control information DCI, wherein the first DCI carries a method for pairing The first counting information for counting by the DCI, and the joint DCI is used for scheduling multiple carriers or cells.

In a second aspect, a communication device is provided, including: a processing module for transmitting first downlink control information DCI, wherein the first DCI carries first counting information for counting joint DCI, and The joint DCI is used to schedule multiple carriers or cells.

In a third aspect, a terminal device is provided. The terminal device includes a processor, a memory, and a computer program that is stored on the memory and can run on the processor. When the computer program is executed by the processor, The steps of the method for transmitting downlink control information as described in the first aspect are implemented.

In a fourth aspect, a network device is provided. The network device includes a processor, a memory, and a computer program that is stored on the memory and can run on the processor. When the computer program is executed by the processor, The steps of the method for transmitting downlink control information as described in the second aspect are implemented.

In a fifth aspect, a computer-readable storage medium is provided, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the method for transmitting downlink control information as described in the first aspect is implemented. step.

In the embodiment of the present invention, first downlink control information (DCI) is transmitted, wherein the first DCI carries first counting information for counting joint DCI, and the joint DCI is used to schedule multiple The carrier or cell can enable the UE to correctly determine the number of DCI.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

Fig. 1 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

Fig. 2 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

Fig. 3 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

4 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

Fig. 5 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

Fig. 6 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

Fig. 7 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

FIG. 8 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

Figures 9a-9e show schematic diagrams of DCI scheduling cells;

FIG. 10 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

Figure 11 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

Fig. 12 is a schematic structural diagram of a terminal device according to another embodiment of the present invention;

Fig. 13 is a schematic structural diagram of a network device according to another embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application. The "and/or" in each embodiment of this specification means at least one of the front and back.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: LTE system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), general Mobile communication system (Universal Mobile Telecommunication System, UMTS) or Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G system, or New Radio (NR) system, or subsequent evolution communication system .

In the embodiment of the present invention, terminal equipment may include, but is not limited to, mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal), mobile phone (Mobile Telephone), UE, mobile phone (handset), and portable equipment (portable equipment) , Vehicles, etc. The terminal device can communicate with one or more core networks via a radio access network (RAN). For example, the terminal device can be a mobile phone (or called a "cellular" phone) , A computer with wireless communication function, etc., the terminal device can also be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device.

In the embodiment of the present invention, a network device is a device deployed in a wireless access network to provide wireless communication functions for terminal devices. The network device may be a base station, and the base station may include various forms of macro base stations, micro base stations, relay stations, and access points. In systems using different wireless access technologies, the names of devices with base station functions may be different. For example, in an LTE network, it is called an evolved NodeB (evolved NodeB, eNB, or eNodeB), and in a third generation (3rd Generation, 3G) network, it is called a Node B (Node B), or a subsequent evolutionary communication system. Network equipment, etc., however, the wording does not constitute a restriction.

As shown in FIG. 1, an embodiment of the present invention provides a method 100 for transmitting downlink control information. The method may be executed by a communication device. The communication device includes: a terminal device and/or a network device. In other words, the method may be installed Executed in software or hardware of a terminal device and/or a network device, the method includes the following steps: the method includes the following steps.

S102: Transmit first downlink control information (DCI), where the first DCI carries first counting information for counting joint DCI.

Wherein, the joint DCI is used for scheduling multiple carriers or cells. Specifically, in the scenario of joint DCI scheduling of multiple carriers or cells, the UE may lose some downlink DCIs, so that the UE cannot correctly determine the number of DCIs, resulting in inconsistent understanding of the number of joint DCIs sent by the UE and the base station, and thus cannot be determined. Correct feedback information.

In order to avoid such problems, the first DCI carries first counting information for counting the joint DCI. When some downlink DCIs are lost, the user can determine whether or not from the first counting information carried by other first DCIs. Lost DCI, ensure that the understanding of the DCI count is consistent with the network equipment.

Therefore, an embodiment of the present invention provides a method for transmitting downlink control information by transmitting a first DCI, where the first DCI carries first counting information for counting joint DCI, and the joint DCI uses In scheduling multiple carriers or cells, the UE can learn the joint DCI count, so that the network equipment and the UE have the same understanding of the joint DCI count.

As shown in FIG. 2, an embodiment of the present invention provides a method 200 for transmitting downlink control information. The method may be executed by a communication device. The communication device includes: a terminal device and/or a network device. In other words, the method may be installed Executed in the software or hardware of the terminal device and/or the network device, the method includes the following steps.

S202: Transmit first downlink control information (DCI). The first DCI carries first counting information for counting joint DCI. The first DCI is the joint DCI or the single DCI. DCI is used to schedule a single carrier or cell.

This step may include the same or similar description as step S102 in the embodiment of FIG. 1, and repetitive parts are not repeated here.

In addition, the first DCI is the joint DCI or a single DCI (single DCI), and the single DCI is used to schedule a single carrier or cell. Single DCI can only schedule one carrier or cell at a time, but the same or different carriers or cells can be scheduled through multiple scheduling.

In an implementation manner, the joint DCI may carry the first counting information.

In another implementation manner, single DCI may carry the first counting information. Optionally, the single DCI carrying the first counting information is associated with the joint DCI. Specifically, the first counting information for counting a certain joint DCI may be carried by the joint DCI, or may not be carried by the joint DCI, but may be carried by the single DCI associated with the joint DCI, and is related to the joint DCI. The associated single DCI may be, for example, a single DCI closest to the joint DCI, or a single DCI that has a preset association relationship with the joint DCI. Therefore, through flexible DCI design, the UE can learn the joint DCI count, so that the network equipment and the UE have the same understanding of the joint DCI count.

Therefore, the embodiment of the present invention provides a method for transmitting downlink control information, which enables the UE to learn the counts of single DCI and joint DCI, so that the network equipment and the UE have the same understanding of the single DCI and joint DCI counts.

As shown in FIG. 3, an embodiment of the present invention provides a method 300 for transmitting downlink control information. The method may be executed by a communication device. The communication device includes: a terminal device and/or a network device. In other words, the method may be installed Executed in the software or hardware of the terminal device and/or the network device, the method includes the following steps.

S302: Transmit first downlink control information (DCI), where the first DCI carries first counting information for counting joint DCI, and the first counting information includes: the serial number and/or of the joint DCI The total number is at least one of the transmission count of the joint DCI scheduling, and the feedback information count corresponding to the joint DCI.

This step may include the same or similar description as step S102 in the embodiment of FIG. 1 or step S202 in the embodiment of FIG. 2, and repetitive parts are not repeated here.

In addition, the first count information may include: the number and/or total number of the joint DCI, the transmission count TI (transmission index) scheduled by the joint DCI, such as a transport block (Transport Block, TB) or a code block group ( Code block group, CBG) count, and at least one of feedback information count FI (feedback index) corresponding to the joint DCI.

Wherein, the count of joint DCI may be Downlink Assignment Index (DAI), the number of joint DCI is, for example, count DAI (counter DAI, cDAI) and/or the total number of joint DCI is, for example, total DAI (tDAI). .

The above count may include a number and/or a total number. For example, joint DCI schedules two cells, where TI includes a count TI (counterTI, cTI) and a total TI (tTI), assuming that cTI=2 and tTI=3 indicate a total 3 TBs are scheduled, and the TIs scheduled by the DCI are the first and second TBs.

Similarly, the second count information may include: the second count information includes: the number and/or total number of the single DCI, the transmission count of the single DCI scheduling, and the count of the feedback information corresponding to the single DCI At least one of.

Therefore, an embodiment of the present invention provides a method for transmitting downlink control information, where the first count information includes: the number and/or total number of the joint DCI, the transmission count of the joint DCI scheduling, and the joint DCI At least one of the corresponding feedback information counts can enable the UE to learn the counts of single DCI and joint DCI through a reasonable and flexible count design, so that the network equipment and the UE have consistent understanding of the single DCI and joint DCI counts.

As shown in FIG. 4, an embodiment of the present invention provides a method 400 for transmitting downlink control information. The method may be executed by a communication device. The communication device includes: a terminal device and/or a network device. In other words, the method may be installed Executed in software or hardware of a terminal device and/or a network device, the method includes the following steps: the method includes the following steps.

S402: Transmit first downlink control information (DCI), where the first DCI carries first counting information for counting joint DCI, and the first DCI also carries first counting information for counting the single DCI The second count information for the first count information and the second count information use different parameter domains.

This step may include the same or similar description as step S102 in the embodiment of FIG. 1 or step S202 in the embodiment of FIG. 2, and repetitive parts are not repeated here.

In an implementation manner, the first counting information and the second counting information may use different parameter domains, that is, the single DCI and the joint DCI are counted separately, so that they do not affect each other.

In an implementation manner, the first DCI also carries second counting information for counting the single DCI, so that the single DCI count can also be obtained through the first DCI at the same time.

Therefore, the embodiment of the present invention provides a method for transmitting downlink control information, which enables the UE to learn the counts of single DCI and joint DCI, so that the network equipment and the UE have the same understanding of the single DCI and joint DCI counts.

In addition, the embodiment of the present invention provides a method for transmitting downlink control information. Through the first counting information and the second counting information, different parameter fields can be used, and single DCI and joint DCI can be counted separately. Will not affect each other.

The embodiment of the present invention provides a method for transmitting downlink control information. The first DCI also carries second counting information for counting the single DCI, so that the single DCI count can be obtained through the first DCI at the same time.

As shown in FIG. 5, an embodiment of the present invention provides a method 500 for transmitting downlink control information. The method may be executed by a communication device. The communication device includes: a terminal device and/or a network device. In other words, the method may be installed Executed in software or hardware of a terminal device and/or a network device, the method includes the following steps: the method includes the following steps.

S502: Transmit the first downlink control information DCI, where the first DCI carries first counting information used to count the joint DCI.

This step may include the same or similar description as step S102 in the embodiment of FIG. 1 or step S202 in the embodiment of FIG. 2, and repetitive parts are not repeated here.

In an implementation manner, the first counting information is also used to count the single DCI, that is, the first counting information counts both joint DCI and single DCI, for example, the first counting information is cDAI and or tDAI, tDAI It indicates the total number of single DCI and joint DCI sent, and cDAI indicates the number of the first DCI in the single DCI and joint DCI sent. In this way, joint DCI and single DCI can be counted at the same time through the same counting information, without the need to introduce new parameter designs.

In an implementation manner, when the joint DCI and the single DCI are in the same time unit, the first counting information is in a predetermined order, the number of scheduled carriers or cells, the DCI format, the type of DCI, and the DCI At least one of identification, DCI size, search space, control channel element (Control Channel Element, CCE) number, target CCE position, candidate PDCCH aggregation level, and time domain position, compare the joint DCI and the single DCI counts.

In an implementation manner, the time unit may include: time overlapping PDCCH monitoring opportunities, the same time slot, the same sub-time slot, the start time and/or the time interval related to the parameter of the scheduled carrier or cell At least one of the time interval between the PDCCH monitoring opportunities corresponding to the two scheduled carriers or cells, the PDCCH monitoring opportunities with the same starting position of the scheduled shared channel, and the effective time of the monitoring timer.

In an implementation manner, the DCI identifier may be, for example, a Radio Network Temporary Identifier (RNTI) that scrambles the DCI, and the target CCE position may be, for example, the position of the largest CCE or the position of the smallest CCE, etc. The time domain position For example, it may be the time domain position of the DCI or the monitoring opportunity associated with the DCI, and counting according to the search space may include counting according to the type of the search space, and/or counting according to the identification of the search space. The types of search spaces include: public search space, dedicated search space, search space for scheduling a single cell or carrier, search space for joint scheduling of cells or carriers, and search space for cross-carrier scheduling of cells or carriers. A sort of. For example, the DCI of the common search space can be numbered first, and then the DCI of the dedicated search space can be numbered. For example, the DCI in the search space used for scheduling a single cell or carrier can be numbered first, and then the DCI used for joint scheduling of cells or carriers can be numbered. The DCI number in the search space may be specifically numbered according to the identification of the search space, for example, according to the size order of the identification of the search space where the DCI is located.

Therefore, the embodiment of the present invention provides a method for transmitting downlink control information, which enables the UE to learn the counts of single DCI and joint DCI, so that the network equipment and the UE have the same understanding of the single DCI and joint DCI counts.

In addition, the embodiment of the present invention provides a method for transmitting downlink control information. The first counting information is also used to count the single DCI, and the joint DCI and single DCI can be counted at the same time through the same counting information. Need to introduce additional new parameter design.

As shown in FIG. 6, an embodiment of the present invention provides a method 600 for transmitting downlink control information. The method may be executed by a communication device. The communication device includes: a terminal device and/or a network device. In other words, the method may be installed Executed in software or hardware of a terminal device and/or a network device, the method includes the following steps: the method includes the following steps.

S602: Transmit the first downlink control information DCI, where the first DCI carries first counting information used to count the joint DCI.

This step can include any one or more of the steps S102 in the embodiment of FIG. 1, step S202 in the embodiment of FIG. 2, step S302 in the embodiment of FIG. 3, step S402 in the embodiment of FIG. 4, and step S502 in the embodiment of FIG. 5. Similar descriptions will not be repeated here for the repeated parts.

In an implementation manner, the first counting information includes: a first number part and/or a first total number part. In another implementation manner, the second counting information may also include: a second number part and/or a second total number part.

In an implementation manner, the first numbering part or the first total number part adopting joint counting may include: the first numbering part and the first total number part adopting joint counting, the first numbering part adopts joint counting, and the first total number part adopts separate counting. Counting may also include that the first numbering part adopts separate counting and the first total number part adopts joint counting. The use of separate counting for the first number part or the first total number part may include: both the first number part and the first total number part are separately counted.

The counting of the joint DCI may include: a downlink allocation index DAI for counting the joint DCI. Specifically, the first number part may be cDAI (counter DAI) for telling the UE the number of the DCI. The total part can be tDAI (total DAI, total DAI) to indicate how many DCIs have been sent up to the current time point (for example, the current monitoring opportunity monitoring occasion). The downlink allocation index DAI may include cDAI and/or tDAI.

Similarly, for the joint DCI-scheduled transmission count TI, the first number part may be cTI (counter TI, count TI) used to tell the UE the number of the joint DCI-scheduled transmission, and the first total part may be tTI (total TI (total TI) is used to indicate how many transmissions have been scheduled up to the current point in time (for example, the current monitoring opportunity monitoring occasion).

For the feedback information count FI corresponding to the joint DCI, the first number part may be cFI (counter FI, count FI) for telling the UE the number of the feedback information corresponding to the joint DCI, and the first total part may be tFI (total FI) ,Total FI) is used to indicate how much feedback information corresponds to the current time point (for example, the current monitoring opportunity).

The following implementations are described using DAI as an example, but each implementation is also applicable to FI or TI, and similar implementations will not be repeated.

In the first implementation manner of calculating the counting information, the first number part of the first DCI is the first number part of the previous DCI plus N, and the first total part of the first DCI is the first total number of the previous DCI Partially add N, where N is a positive integer greater than or equal to 2. For example, cDAI+2, tDAI+2.

In the second implementation manner of calculating the counting information, the first number part of the first DCI is the first number part of the previous DCI plus 1, and the first total part of the first DCI is the first total number of the previous DCI Partially add N, where N is a positive integer greater than or equal to 2. cDAI is the count of DCI. For example, cDAI+1, tDAI+2.

In the third implementation manner of calculating the counting information, the first number part of the first DCI is the first number part of the previous DCI plus 1, and the first total part of the first DCI is the first total number of the previous DCI Partially add 1. For example, cDAI+1, tDAI+1.

In an implementation manner, when the joint DCI and the single DCI are in the same time unit, the first counting information is in a predetermined order, the number of scheduled carriers or cells, the DCI format, the type of DCI, and the DCI At least one of identification, DCI size, search space, control channel element (Control Channel Element, CCE) number, target CCE position, candidate PDCCH aggregation level, and time domain position, the joint DCI and the single DCI counts. The case of counting the joint DCI and the single DCI can be illustrated by the following examples.

For example, the predetermined sequence includes: if there are both single DCI and joint DCI in the time unit, the single DCI is counted first and then the joint DCI is counted, or vice versa, the joint DCI is counted first and then the single DCI is counted. For example, there are 2 single DCIs and 1 joint DCI in a slot. The single DCI is counted first, and then the joint DCI is counted. That is, the cDAI of the two single DCIs is x, x+1, and the cDAI of the joint DCI is x+n. Joint DCI scheduling two cells, n may be 2 or 3. For another example, there are 2 single DCIs and 1 joint DCI in a slot. The joint DCI is counted first, and then the single DCI is counted. That is, the cDAI of the joint DCI is x, and the cDAI of the two single DCIs is x+1, x+2. .

For example, there are 1 single DCI and 1 joint DCI in a monitoring opportunity. The single DCI is counted first, and then the joint DCI is counted. That is, the cDAI of the single DCI is x, and the cDAI of the joint DCI is x+n. Assume that joint DCI schedules two For the cell, n may be 1 or 2.

For example, there are 1 single DCI and 1 joint DCI in a monitoring opportunity. The positions of the smallest CCE among the CCEs occupied by the two DCIs are CCE#0 and CCE#7. It is assumed that the DCI is performed in the order of the smallest CCE position from low to high. Therefore, the single DCI is counted first, and then the joint DCI is counted. The cDAI of the single DCI is x, and the cDAI of the joint DCI is x+n. Assuming that the joint DCI schedules two cells, n may be 1 or 2.

For example, there are 1 single DCI and 1 joint DCI in a monitoring opportunity, and the number of CCEs occupied by the two DCIs is 4 and 8. Assuming that the DCI counts in the order of the number of CCEs occupied, the single DCI is counted first. The DCI count is then counted on the joint DCI, the cDAI of the single DCI is x, and the cDAI of the joint DCI is x+n. Assuming that the joint DCI schedules two cells, n may be 1 or 2.

Therefore, the embodiment of the present invention provides a method for transmitting downlink control information, which enables the UE to learn the counts of single DCI and joint DCI, so that the network equipment and the UE have the same understanding of the single DCI and joint DCI counts.

As shown in FIG. 7, an embodiment of the present invention provides a method 700 for transmitting downlink control information. The method may be executed by a communication device. The communication device includes: a terminal device and/or a network device. In other words, the method may be installed Executed in software or hardware of a terminal device and/or a network device, the method includes the following steps: the method includes the following steps.

S702: Transmit first downlink control information (DCI). The first DCI carries first counting information for counting joint DCI. The first DCI is the joint DCI or the single DCI. The DCI is used to schedule a single carrier or cell, and the joint DCI and the single DCI correspond to different configuration information.

This step may include the same or similar description as any one or more steps in step S302 in the embodiment of FIG. 3, step S402 in the embodiment of FIG. 4, step S502 in the embodiment of FIG. 5, and step S602 in the embodiment of FIG. I won't repeat them here.

In an implementation manner, the configuration information corresponding to the joint DCI and the single DCI are different, where the configuration information includes: DCI format, DCI type, DCI identifier, DCI size, and DCI associated search space At least one of (SearchSpace), DCI-associated candidate (Physical Downlink Control Channel, PDCCH), DCI-associated CCE, and DCI-associated monitoring opportunity (monitoring occasion).

Wherein, the DCI identifier may be, for example, an RNTI that scrambles the DCI. The size of the DCI may be the size of the amount of information carried by the DCI. In addition, regardless of whether the DCI carries the first counting information and/or the second technical information, the above-mentioned configuration information corresponding to the joint DCI and the single DCI may be different.

S704: Determine, according to the configuration information of the first DCI, that the first DCI is the joint DCI or the single DCI.

After determining that the first DCI is the joint DCI or the single DCI, the UE may further determine the count of the joint DCI and/or the count of the single DCI.

For example, Joint DCI and single DCI are respectively associated with different monitoring occasions or associated with different SSs. When monitoring PDCCH, the user can distinguish whether the received joint DCI or single DCI is associated with the current monitoring occasion whether Joint DCI or single DCI is associated.

According to the DCI format, DCI type, RNTI, SS, monitoring occasion, number of associated cells, etc., users can infer the respective counts of joint DCI and single DCI. At this time, the two types of DCI are associated with different features. Regardless of whether the DCI indicates a joint count or a separate count, the user can recognize the different DCIs through these features to identify the actual respective counts of the two DCIs.

In an implementation manner, the joint DCI and the single DCI are located in different time units. That is, the user assumes that in the same time unit, single DCI and joint DCI will not appear at the same time. Therefore, after the first downlink control information DCI is transmitted, it can be determined that the first DCI is the joint DCI or the single DCI according to the time unit in which the first DCI is located.

The above implementation can be applied when there is no difference or little difference between the configuration information corresponding to Joint DCI and single DCI, such as sharing at least one of the same DCI format, DCI type, scrambled RNTI, associated SS, and associated monitoring occasion. A same situation. For example, one search space can be allocated to transmit Joint DCI and single DCI, but for the same or different monitoring occasions in the same slot, Joint DCI and single DCI will not be transmitted at the same time.

In an implementation manner, the time unit may include: time overlapping PDCCH monitoring opportunities, the same time slot, the same sub-time slot, the start time and/or the time interval related to the parameter of the scheduled carrier or cell At least one of the time interval between the PDCCH monitoring opportunities corresponding to the two scheduled carriers or cells, the PDCCH monitoring opportunities with the same starting position of the scheduled shared channel, and the effective time of the monitoring timer.

Wherein, the same sub-slot may include the same sub-slot (Subslot) or mini-slot (mini-slot), the start time and/or length are related to the scheduled carrier or cell parameters, where the parameters may be For the number of carriers or cells or SCS, the PDCCH monitoring opportunities with the same starting position of the scheduled shared channel may be, for example, the PDCCH monitoring opportunities on two cells with the earliest starting positions of both scheduled PDSCH/PUSCH n.

As shown in FIG. 8, an embodiment of the present invention provides a method 800 for transmitting downlink control information. The method may be executed by a communication device. The communication device includes: a terminal device and/or a network device. In other words, the method may be installed Executed in software or hardware of a terminal device and/or a network device, the method includes the following steps: the method includes the following steps.

S802: Transmit the first downlink control information DCI, where the first DCI carries first counting information used to count the joint DCI.

This step may include step S102 in the embodiment of FIG. 1, step S202 in the embodiment of FIG. 2, step S302 in the embodiment of FIG. 3, step S402 in the embodiment of FIG. 4, step S502 in the embodiment of FIG. 5, step S602 in the embodiment of FIG. The description of any one or more steps in step S702 in the embodiment that are the same or similar will not be repeated here for repeated parts.

S804: Determine feedback information according to the first counting information, or according to the first counting information and the second counting information.

For the transmission of the downlink data packet, the user can feed back feedback information on the uplink resource according to the receiving status, that is, HARQ-ACK information to inform the control node whether the transmission of the downlink data packet is successful.

Determine the feedback information according to the first counting information, or according to the first counting information and the second counting information, so that the user can correctly determine the feedback information, and avoid the inaccuracy caused by joint DCI reception or decoding failure. Confirm feedback information.

In the first implementation manner for determining feedback information, the number of target cells scheduled by the joint DCI, and the number of transmissions scheduled by the joint DCI on each target cell or the bits of the corresponding feedback information The number of bits of the feedback information is determined. At this time, the number of actually scheduled transmissions can be known through the first counting information, and thus, feedback is performed according to the number of transmissions.

For example, assume the I scheduling cell support joint DCI (present joint DCI), joint DCI scheduling on a cell i i N _i th cell, and each cell j in the scheduling of its scheduled M _I, M, or TB _j th _{i, j} CBGs or corresponding to M _{i, j} HARQ-ACK bits; assuming that K cells support single DCI scheduling, single DCI on cell k schedules O _k TBs or O _k CBGs or corresponds to O _k HARQ -ACK bit. In the above implementation, each joint DCI of cell i corresponds to N _i *max _i (M _i,j ) HARQ-ACK bits, or each joint DCI of cell i corresponds to sum _i (M _i,j ) HARQ -ACK bit, or each joint DCI in the joint DCI of one cell corresponds to max(N _i )*max(M _i,j ) HARQ-ACK bits. max _i (M _i,j ) is the number of transmissions on the cell scheduled by the joint DCI of cell i or the maximum number of corresponding HARQ-ACK bits, sum _i (M _i,j ) is the joint DCI of cell i The total number of transmissions on all scheduled cells or the total number of corresponding HARQ-ACK bits. max(N _i ) is the maximum value of the number of cells scheduled in the joint DCI of one cell. max(M _i,j ) is the number of scheduled transmissions on the cell scheduled in the joint DCI of one cell or the maximum number of corresponding HARQ-ACK bits.

For example, there are joint DCIs on cell 1 and cell 2, the joint DCI on cell 1 schedules two cells, the joint DCI on cell 2 schedules three cells, and the joint DCI schedules one TB on each cell. Then the joint DCI of cell 1 corresponds to 2*max ₁ (M _1,j )=2bit, and the joint DCI of cell 2 corresponds to 3*max ₂ (M _2,j )=3bit. Or, the joint DCI of cell 1 corresponds to sum ₁ (M _1,j )=2bit, then the joint DCI of cell 2 corresponds to sum ₂ (M _2,j )=3bit. Or, the joint DCI of cell 1 and cell 2 both correspond to max(N _i )*max(M _{i, j} )=3*1=3bit.

Furthermore, for the case where joint DCI is supported on only one carrier or cell (I=1), assuming that the DCI schedules N cells, at this time N*max(M _1,j ) HARQ-ACK bits are fed back. When the number of scheduled transmissions of the scheduling cell or the number of corresponding HARQ-ACK bits are the same (for example, M _1,j =M), N*M HARQ-ACK bits are fed back.

In an implementation manner, in step S802, one of the first or second implementation manners of calculating counting information is adopted in step S102 of the embodiment of FIG. 1, step S402 of the embodiment of FIG. 4, and step S602 of the embodiment of FIG. At this time, in this step, the first implementation manner of determining the feedback information described above can be adopted accordingly.

In the second implementation manner of determining the feedback information, the number of bits of the feedback information is determined according to the number of transmissions scheduled by the joint DCI on each target cell or the number of bits of the corresponding feedback information.

In this case, the number of DCI actually sent can be known through the first counting information, but the total number of actually scheduled transmissions is not known, so feedback is performed according to the number of DCIs. For example, each joint DCI of cell i corresponds to max _i (M _i,j ) HARQ-ACK bits, or each joint DCI of I cell corresponds to max(M _i,j ) HARQ-ACK bits, or each joint DCI of cell i corresponds to sum _i (M _i,j ) One HARQ-ACK bit, or each joint DCI of one cell corresponds to max(sum _i (Mi _,j )) HARQ-ACK bits. max _i (M _i,j ) is the number of transmissions on the cell scheduled by the joint DCI of cell i or the maximum number of corresponding HARQ-ACK bits, max(M _i,j ) is the joint DCI of I cells The number of scheduled transmissions on the cell scheduled by each joint DCI or the maximum number of corresponding HARQ-ACK bits. sum _i (M _{i, j} ) is the number of transmissions on the cell scheduled by the joint DCI of cell i or the total number of corresponding HARQ-ACK bits, max (sum _i (M _{i, j} )) is the total number of I cells The maximum number of scheduled transmissions on the cell scheduled by each joint DCI in joint DCI or the total number of corresponding HARQ-ACK bits.

For example, there are joint DCIs on cell 1 and cell 2, and the joint DCIs on cell 1 and cell 2 both schedule two cells, and the joint DCI schedules one TB on each cell. Then the joint DCI of cell 1 corresponds to max ₁ (M _1,j )=1bit, and the joint DCI of cell 2 corresponds to max ₂ (M _2,j )=1bit. Or, the joint DCI of cell 1 and cell 2 both correspond to max( 1,1) = 1bit.

For example, there are joint DCIs on cell 1 and cell 2, the joint DCI on cell 1 schedules two cells, the joint DCI on cell 2 schedules three cells, and the joint DCI schedules one TB on each cell. Then the joint DCI of cell 1 corresponds to max ₁ (M _1,j )=1bit, and the joint DCI of cell 2 corresponds to max ₂ (M _2,j )=1bit. Or, the joint DCI of cell 1 and cell 2 both correspond to max( 1,1) = 1bit.

For example, there are joint DCIs on cell 1 and cell 2, and the joint DCIs on cell 1 and cell 2 both schedule two cells, and the joint DCI schedules one TB on each cell. Then the joint DCI of cell 1 corresponds to sum ₁ (M _1,j )=2bit, and the joint DCI of cell 2 corresponds to sum ₂ (M _2,j )=2bit. Or, the joint DCI of cell 1 and cell 2 both correspond to max( sum _i (M _i,j ))=max(2,2)=2bit.

For example, there are joint DCIs on cell 1 and cell 2, the joint DCI on cell 1 schedules two cells, and the joint DCI on cell 2 schedules three cells, and the joint DCI schedules one TB on each cell. Then the joint DCI of cell 1 corresponds to sum ₁ (M _1,j )=2bit, and the joint DCI of cell 2 corresponds to sum ₂ (M _2,j )=3bit. Or, the joint DCI of cell 1 and cell 2 both correspond to max( sum _i (M _i,j ))=max(2,3)=3bit.

In the third implementation manner for determining feedback information, according to the number of target cells scheduled by the joint DCI, the number of transmissions scheduled by the joint DCI on each target cell, or the number of bits of the corresponding feedback information, And, the number of transmissions scheduled by the single DCI on each target cell or the number of bits of the corresponding feedback information determines the number of bits of the feedback information.

For example, each DCI (joint DCI or single DCI) corresponds to max(max(N _i *M _i,j ), max(O _k )) HARQ-ACK bits. max(N _i *M _{i,j ) is the maximum of the product of the number of cells N i} scheduled by each joint DCI in the joint DCI of a cell and the number of transmissions on the cell scheduled by the DCI or the number of corresponding feedback information bits value. max(O _k ) is the number of transmissions scheduled by single DCI of K cells or the maximum value of the number of corresponding feedback information bits.

In this case, the number of DCI actually sent can be known through the first counting information, but the total number of actually scheduled transmissions is not known. Since the scheduled cell corresponding to each DCI does not exceed max(Ni), each scheduled cell corresponds to The number of transmissions of is not greater than max(max(N _i *M _i,j ),max(O _k )), so feedback according to the maximum overhead can make the size of the feedback information relatively fixed.

Specifically, assuming that single DCI schedules two TBs and joint DCI schedules two cells, and each cell is scheduled by joint DCI for one TB, each DCI corresponds to 2 bits of HARQ-ACK information. Specifically, assuming that single DCI schedules two TBs and joint DCI schedules three cells, and each cell is scheduled by joint DCI for one TB, each DCI corresponds to max(1*3,2)=3bit HARQ-ACK information.

In an implementation manner, when step S802 adopts one of step S102 in the embodiment of FIG. 1, step S502 in the embodiment of FIG. 5, and step S602 in the embodiment of FIG. Correspondingly, this step can adopt the second or third implementation manner of determining the feedback information described above.

In addition, in an implementation manner, when at least two feedback resources indicated by the first DCI meet a predetermined condition, the feedback resources corresponding to the at least two first DCI scheduled transmissions are fed back on the feedback resources indicated by the last DCI. Feedback.

Wherein, the predetermined conditions include: overlapping resources, overlapping partial resources, and being in the same time range, such as the same slot, and the same format, such as at least one of the long format.

The last DCI includes: the last joint DCI of the at least two first DCIs, the last single DCI of the at least two first DCIs, and the time position of the at least two first DCIs The joint DCI at the last time position or the single DCI at the last time position among the time positions where the at least two first DCIs are located.

Wherein, the joint DCI at the last time position among the time positions where the at least two first DCIs are located, for example, there are 1 single DCI, 1 single DCI, 1 single DCI, and 1 single DCI on the monitoring opportunities 1, 2 and 3 respectively. 1 joint DCI, these DCI respectively indicate feedback resources 1 or 2 or 3 or 4, and these feedback resources overlap, then the last DCI is the joint DCI on monitoring opportunity 3, and the resource used to feed back the feedback information corresponding to these DCIs is the feedback resource 4.

The following examples illustrate the DCI transmitted in the embodiments of FIG. 4 to FIG. 8.

Figures 9a-9e show schematic diagrams of DCI scheduling cells.

As shown in Fig. 9a, the DCI shown in this figure adopts the first counting information described in the embodiment of Fig. 5 and is also used to count the single DCI in an implementation manner, and the calculation counting information described in the embodiment of Fig. 6 The first implementation method specifically includes: the DCI corresponding to CC or cell 0 and CC or cell 1 is single DCI, only one corresponding cell is scheduled, and the joint DCI of CC or cell 2 schedules two CCs or cells, and the DCI carries Add cDAI and tDAI, and number single DCI and joint DCI. For each single DCI, cDAI and tDAI are increased by 1, and for each joint DCI, cDAI and tDAI are both increased by 2. Therefore, DAI gives the number and total number of scheduled transmissions, which is convenient for users to determine feedback information.

As shown in Figure 9b, the DCI shown in this figure uses the first counting information described in the embodiment in Figure 5 and is also used to count the single DCI in an implementation manner, and the calculation counting information described in the embodiment in Figure 6 The second implementation method of CC or cell 0, 1, 4 is single DCI, only one corresponding cell is scheduled, and the joint DCI of CC or cell 2 schedules two CCs or cells (CC or cell 2 and 3), DCI carries cDAI and tDAI, and single DCI and joint DCI are numbered. For each single DCI, cDAI and tDAI are increased by 1, and for each joint DCI, cDAI is increased by 1, and tDAI is increased by 2. As a result, DAI gives the total number of scheduled transmissions, which is convenient for users to determine the feedback information, and also gives the number of the DCI, thereby reducing the misunderstanding caused by the consecutive loss of two joint DCIs.

As shown in Figure 9c, the DCI shown in this figure uses the first counting information described in the embodiment of Figure 4 and the second counting information can be implemented in different parameter domains, and the method described in the embodiment of Figure 6 The first implementation of calculating counting information specifically includes: the DCI corresponding to CC or cell 0 and CC or cell 1 is single DCI, only one corresponding cell is scheduled, and the joint DCI of CC or cell 2 schedules two CCs or cells. Single DCI carries cDAI and tDAI for single DCI, and counts single DCI; joint DCI carries cDAI and tDAI for joint DCI, and counts joint DCI. For each single DCI, the cDAI and tDAI in the single DCI are both increased by 1, and for each joint DCI, the cDAI and tDAI in the joint DCI are both increased by 2. As a result, single DCI and joint DCI are counted separately, so that joint DC will not affect the feedback under the existing single DCI.

As shown in Figure 9d, the DCI shown in this figure uses the first counting information described in the embodiment of Figure 4 and the second counting information can be implemented in different parameter domains, and the method described in the embodiment of Figure 6 The second way to calculate counting information specifically includes: the DCI corresponding to CC or cell 0 and CC or cell 1 is single DCI, only one corresponding cell is scheduled, and the joint DCI of CC or cell 2 schedules two CCs or cells, single DCI carries cDAI and tDAI for single DCI, and counts single DCI; joint DCI carries cDAI and tDAI for joint DCI, and counts joint DCI. For each single DCI, the cDAI and tDAI in the single DCI are increased by 1, and for each joint DCI, the cDAI in the joint DCI is increased by 1, and the tDAI is increased by 2. As a result, single DCI and joint DCI are counted separately, so that joint DCI will not affect the feedback under the existing single DCI.

As shown in Figure 9d, the DCI shown in this figure uses the configuration information of the DCI described in the embodiment of Figure 7 to determine the joint DCI included in the DCI and the single included in the DCI The implementation of DCI specifically includes: the DCI corresponding to CC or cell 0 and CC or cell 1 is single DCI, only one corresponding cell is scheduled, and the joint DCI of CC or cell 2 schedules two CCs or cells. DCI carries cDAI and tDAI, counts single DCI and joint DCI. For single DCI, both cDAI and tDAI are increased by 1, and for joint DCI, both cDAI and tDAI are increased by 2. Assuming that joint DCI and single DCI are in different monitoring occasions, users can distinguish whether the received DCI is joint DCI or single DCI through the DCI format or RNTI or the monitoring occasion where they are located, thereby deducing the number and number of joint DCI and single DCI. For example, after the user receives 6 DCIs and finds that tDAI=8cDAI=8, it can be concluded that there are two joint DCIs.

In this way, the user can determine the respective count information through the difference between single DCI and joint DCI to determine feedback.

As shown in FIG. 10, an embodiment of the present invention provides a method 1000 for transmitting downlink control information. The method may be executed by a communication device. The communication device includes: a terminal device and/or a network device. In other words, the method may be installed Executed in software or hardware of a terminal device and/or a network device, the method includes the following steps: the method includes the following steps.

S1002: Transmit the first downlink control information DCI, where the first DCI carries first counting information used to count the joint DCI.

This step may include step S102 in the embodiment of FIG. 1, step S202 in the embodiment of FIG. 2, step S302 in the embodiment of FIG. 3, step S402 in the embodiment of FIG. 4, step S502 in the embodiment of FIG. 5, step S602 in the embodiment of FIG. Example step S702 and any one or more steps in step S802 in the embodiment of FIG. 8 are the same or similar, and repetitive parts are not repeated here.

In an implementation manner, each carrier or cell of the multiple carriers or cells corresponds to one piece of the first counting information. For example, the first counting information includes: the number and/or total number of the joint DCI, and the number and/or total number of the joint DCI is the downlink allocation index DAI. The first counting information may include one DAI, and one DAI corresponds to one carrier or cell. The first counting information may include multiple DAIs, each DAI corresponds to a scheduled carrier or cell, or each DAI corresponds to a carrier or cell, and the DAI corresponding to each carrier or cell may be the same or different.

Take the first count information as the count DAI of the DCI as an example. For example, the first DCI carries M cDAI domains, and each cDAI domain corresponds to a carrier or cell. Assuming that a joint DCI is sent and the joint DCI schedules N carriers or cells, it is scheduled CDAI+1 corresponding to the carrier or cell. Optionally, the cDAI corresponding to the carrier or cell that is not scheduled remains unchanged.

Optionally, the joint DCI only carries one tDAI, one joint DCI is sent, and the joint DCI schedules N carriers or cells, then tDAI+N. Or optionally, the first DCI carries M tDAIs, tDAI+1 corresponding to the scheduled carrier or cell. Optionally, the tDAI corresponding to the carrier or cell that is not scheduled remains unchanged.

In the case of N≤M, it can adapt to the change of the carrier or cell scheduled by joint DCI. In the case of N=M, each first counting information can be made to correspond to one scheduled carrier or cell.

In another implementation manner, each preset carrier or cell group corresponds to one piece of the first counting information. The preset carrier or cell grouping can be pre-configured by the network equipment, or agreed by a protocol. The preset carrier or cell group may be a scheduled carrier or cell group. Similarly, the first counting information may include one DAI, and one DAI corresponds to one preset carrier or cell group. The first counting information may include multiple DAIs, each DAI corresponds to a preset carrier or cell group, and the DAI corresponding to each preset carrier or cell group may be the same or different.

Optionally, the correspondence between the carrier or the cell and the first counting information may be configured by the network device or agreed upon by a protocol.

For example, a count field is Xbit, M count fields are M*Xbit, and DCI contains M*Xbit, which corresponds to the count in the order of the size of the carrier or cell identifier, for example, the carrier with the identifier 0 or the cell corresponding to the lowest X bit (0th to X-1bit), the carrier or cell identified as 1 corresponds to the Xth to 2X-1 bits. The carrier or cell here may include carriers or cells that are configured but not scheduled by joint DCI.

For example, a count field is Xbit, N count fields are N*Xbit, DCI schedules N cells, and DCI contains N*Xbit, which corresponds to the count in the order of the size of the scheduled carrier or cell identifier, for example, the smaller the identifier Corresponds to the lower bit, or the larger the mark corresponds to the lower bit. The identifier may be an identifier configured by a higher layer or an identifier indicated by physical layer signaling, or may be a relative identifier determined after sorting according to the identifier configured by a higher layer or the identifier size indicated by physical layer signaling.

For example, N=2, the DCI schedules two carriers or cells with IDs 0 and 7, the carrier or cell with ID 0 corresponds to the lowest X bit (0th to X-1bit), and the carrier or cell with ID 7 corresponds to the first X bit. X to 2X-1bit.

For example, N=2, DCI schedules two carriers or cells, the RRC configuration identifiers are 0 and 7, the corresponding relative identifiers after sorting the RRC configuration identifiers are 0 and 1, and the carrier or cell with the relative identifier of 0 corresponds to the lowest X bit (0th to X-1bit), relative to the carrier or cell identified as 1 corresponds to Xth to 2X-1bit.

In another implementation manner, carriers or cells with the same sub-carrier spacing in the multiple carriers or cells correspond to one piece of the first counting information.

In another implementation manner, a carrier or cell with the same subcarrier interval and cyclic prefix in the multiple carriers or cells corresponds to one piece of the first counting information.

In another implementation manner, the carrier or cell associated with the same feedback cell corresponds to one piece of the first counting information.

In another implementation manner, the carrier or cell associated with the same feedback cell group corresponds to one piece of the first counting information.

Therefore, an embodiment of the present invention provides a method for transmitting downlink control information by transmitting a first DCI, where the first DCI carries first counting information for counting joint DCI, and the joint DCI uses In scheduling multiple carriers or cells, the UE can learn the joint DCI count, so that the network equipment and the UE have the same understanding of the joint DCI count.

Fig. 11 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in FIG. 11, the communication device 1100 includes: a processing module 1110.

The processing module 1110 is configured to transmit first downlink control information DCI, where the first DCI carries first counting information for counting joint DCI, and the joint DCI is used to schedule multiple carriers or cells.

In an implementation manner, the first DCI is the joint DCI or a single DCI, and the single DCI is used for scheduling a single carrier or cell.

In an implementation manner, the single DCI has an association relationship with the joint DCI.

In an implementation manner, the first DCI also carries second counting information for counting the single DCI.

In an implementation manner, the first counting information and the second counting information use different parameter domains.

In an implementation manner, the first counting information is also used to count the single DCI.

In an implementation manner, when the joint DCI and the single DCI are in the same time unit, the first counting information is in a predetermined order, the number of scheduled carriers or cells, the DCI format, the type of DCI, and the DCI At least one of identification, DCI size, search space, number of control channel elements, target control channel element location, candidate physical downlink control channel PDCCH aggregation level, and time domain location, for the joint DCI and the Single DCI counts.

In an implementation manner, the first counting information includes: a first number part and/or a first total number part, the first number part of the first DCI is the first number part of the previous DCI plus 1 or N, The first total part of the first DCI is the first total part of the previous DCI plus N, where N is a positive integer greater than or equal to 2.

In an implementation manner, the first counting information includes: a first number part and/or a first total number part, the first number part of the first DCI is the first number part of the previous DCI plus 1, the first number part The first total part of a DCI is the first total part of the previous DCI plus one.

In an implementation manner, the configuration information corresponding to the joint DCI and the single DCI is different, where the configuration information includes: DCI format, DCI type, DCI identifier, DCI size, DCI association information At least one of a search space, a candidate PDCCH associated with the DCI, a control channel element associated with the DCI, and a listening opportunity associated with the DCI.

In an implementation manner, the processing module 1110 is further configured to, after the transmission of the first downlink control information DCI, determine that the first DCI is the joint DCI or the joint DCI according to the configuration information of the first DCI Single DCI.

In an implementation manner, the joint DCI and the single DCI are located in different time units.

In an implementation manner, the processing module 1110 is further configured to determine that the first DCI is the joint DCI or the joint DCI according to the time unit in which the first DCI is located after the first downlink control information DCI is transmitted. State the single DCI.

In an implementation manner, the time unit includes: time overlapping PDCCH monitoring opportunities, the same time slot, the same sub-time slot, the start time and/or the time interval related to the parameter of the scheduled carrier or cell, At least one of the time interval between the PDCCH monitoring opportunities corresponding to the two scheduled carriers or cells, the PDCCH monitoring opportunities with the same starting position of the scheduled shared channel, and the effective time of the monitoring timer.

In an implementation manner, the processing module 1110 is further configured to, after the first downlink control information DCI is transmitted, according to the first counting information, or according to the first counting information and the second counting information, Confirm feedback information.

In an implementation manner, the processing module 1110 is configured to schedule according to the number of target cells scheduled by the joint DCI, and, the number of transmissions scheduled by the joint DCI on each target cell or the bits of the corresponding feedback information Determine the number of bits of the feedback information; or, determine the number of bits of the feedback information according to the number of transmissions scheduled by the joint DCI on each target cell or the number of bits of the corresponding feedback information; or , According to the number of target cells scheduled by the joint DCI, the number of transmissions scheduled by the joint DCI on each target cell, or the number of bits of the corresponding feedback information, and, the single DCI is in each of the The number of transmissions scheduled on the target cell or the number of bits of the corresponding feedback information determines the number of bits of the feedback information.

In an implementation manner, the processing module 1110 is further configured to, after the first downlink control information DCI is transmitted, in the case where the feedback resources indicated by the at least two first DCIs meet a predetermined condition, the final DCI indicates Feedback information corresponding to the transmissions scheduled by the at least two first DCIs is fed back on the feedback resource; wherein, the last DCI includes: the last joint DCI of the at least two first DCIs, and the at least two first DCIs The last single DCI in a DCI, the joint DCI at the last time position among the time positions where the at least two first DCIs are located, or the last time position among the time positions where the at least two first DCIs are located Single DCI.

In an implementation manner, the predetermined condition includes at least one of: resource overlap, partial resource overlap, in the same time range, and the same format.

In an implementation manner, the first counting information includes at least one of the number and/or total number of the joint DCI, the transmission count scheduled by the joint DCI, and the feedback information count corresponding to the joint DCI.

In an implementation manner, the number and/or total number of the joint DCI is the downlink allocation index DAI.

In an implementation manner, the second count information includes: at least one of the serial number and/or total number of the single DCI, the transmission count scheduled by the single DCI, and the feedback information count corresponding to the single DCI.

In an implementation manner, each carrier or cell of the multiple carriers or cells corresponds to one piece of the first counting information; or, each preset carrier or cell group corresponds to one piece of the first counting information; Carriers or cells with the same subcarrier spacing in the multiple carriers or cells correspond to one of the first counting information; or, carriers or cells with the same subcarrier spacing and cyclic prefix in the multiple carriers or cells correspond to the first counting information One counting information; or, the carrier or cell associated with the same feedback cell corresponds to one piece of the first counting information; or, the carrier or cell associated with the same feedback cell group corresponds to one piece of the first counting information.

The communication device 1100 according to the embodiment of the present invention may refer to the processes of the methods 100-800 and 1000 corresponding to the embodiment of the present invention, and each unit/module in the communication device 1100 and the other operations and/or functions described above are used to implement the method respectively. The corresponding processes in 100-800 and 1000 can achieve the same or equivalent technical effects. For the sake of brevity, it will not be repeated here.

Fig. 12 is a block diagram of a terminal device according to another embodiment of the present invention. The communication device described in the embodiment of the present invention may be a terminal device. The terminal device 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 device 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.

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

It can be understood that the memory 1202 in the embodiment of the present invention 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 Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) And Direct Rambus RAM (DRRAM). The memory 1202 of the system and method described in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

In some embodiments, the memory 1202 stores the following elements, executable modules or data structures, or their subsets, or their extended sets: operating system 12021 and application programs 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. The program for implementing the method of the embodiment of the present invention may be included in the application program 12022.

In the embodiment of the present invention, the terminal device 1200 further includes: a computer program stored in the memory 1202 and capable of running on the processor 1201. The computer program is executed by the processor 1201 to implement the steps of the methods 100-800 and 1000.

The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1201 or implemented by the processor 1201. The processor 1201 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1201 or instructions in the form of software. The aforementioned processor 1201 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a computer-readable storage medium that is mature in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The computer-readable storage medium is located in the memory 1202, and the processor 1201 reads information in the memory 1202, and completes the steps of the foregoing method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 1201, each step of the above-mentioned method 100 embodiment is implemented.

It can be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in this application Electronic unit or its combination.

For software implementation, the technology described in the embodiments of the present invention can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present invention. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

The terminal device 1200 can implement each process implemented by the communication device in the foregoing embodiment, and can achieve the same or equivalent technical effects. To avoid repetition, details are not described herein again.

Please refer to FIG. 13. FIG. 13 is a structural diagram of a network device applied in an embodiment of the present invention, which can implement the details of the method embodiments 100-800 and 1000 and achieve the same effect. As shown in FIG. 13, the network device 1300 includes: a processor 1301, a transceiver 1302, a memory 1303, and a bus interface, where:

In the embodiment of the present invention, the network device 1300 further includes: a computer program stored in the memory 1303 and capable of running on the processor 1301, and the computer program is executed by the processor 1301 to implement the steps of the method 500.

In FIG. 13, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1301 and various circuits of the memory represented by the memory 1303 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1302 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.

The processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1303 can store data used by the processor 1301 when performing operations.

The embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. The same technical effect, in order to avoid repetition, will not be repeated here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk, or optical disk, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present invention.

The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, many forms can be made without departing from the purpose of the present invention and the scope of protection of the claims, and they all fall within the protection of the present invention.

Claims (51)

1. A method for transmitting downlink control information, the method is executed by a communication device, and the method includes:

   The first downlink control information DCI is transmitted, where the first DCI carries first counting information for counting joint DCI, and the joint DCI is used to schedule multiple carriers or cells.
2. The method of claim 1, wherein the first DCI is the joint DCI or a single DCI, and the single DCI is used for scheduling a single carrier or cell.
3. The method according to claim 2, wherein the single DCI has an association relationship with the joint DCI.
4. 3. The method according to claim 2, wherein the first DCI also carries second counting information for counting the single DCI.
5. The method according to claim 4, wherein the first counting information and the second counting information use different parameter domains.
6. The method according to claim 2, wherein the first counting information is also used to count the single DCI.
7. The method according to claim 2 or 6, wherein, when the joint DCI and the single DCI are in the same time unit, the first counting information is in a predetermined order, the number of scheduled carriers or cells, and the DCI format , DCI type, DCI identifier, DCI size, search space, number of control channel elements, target control channel element position, candidate physical downlink control channel PDCCH aggregation level, time domain position of the joint DCI, and the At least one of the time domain positions of the single DCI, counting the joint DCI and/or the single DCI.
8. The method according to claim 1, wherein the first count information comprises: a first number part and/or a first total number part, and the first number part of the first DCI is the first number part of the previous DCI plus 1 Or plus N, the first total part of the first DCI is the first total part of the previous DCI plus N, where N is a positive integer greater than or equal to 2.
9. The method according to claim 1, wherein the first count information comprises: a first number part and/or a first total number part, and the first number part of the first DCI is the first number part of the previous DCI plus 1 , The first total part of the first DCI is the first total part of the previous DCI plus 1.
10. The method according to claim 2, wherein the configuration information corresponding to the joint DCI and the single DCI is different, wherein the configuration information includes: DCI format, DCI type, DCI identifier, DCI size, and associated At least one of search space, associated candidate PDCCH, associated control channel unit, and associated listening opportunity.
11. The method according to claim 10, wherein after said transmitting the first downlink control information DCI, the method further comprises:

    According to the configuration information of the first DCI, it is determined that the first DCI is the joint DCI or the single DCI.
12. The method of claim 2, wherein the joint DCI and the single DCI are located in different time units.
13. The method according to claim 12, wherein, after said transmitting the first downlink control information DCI, the method further comprises:

    According to the time unit in which the first DCI is located, it is determined that the first DCI is the joint DCI or the single DCI.
14. The method according to claim 13, wherein the time unit includes: time overlapping PDCCH listening opportunities, a time slot, a sub-slot, a start time and/or a length related to a parameter of a scheduled carrier or cell At least one of the time interval, the time interval between PDCCH listening opportunities corresponding to two scheduled carriers or cells, the PDCCH listening opportunities with the same starting position of the scheduled shared channel, and the effective time of the listening timer.
15. The method according to any one of claims 1-14, wherein, after said transmitting the first downlink control information DCI, the method further comprises:

    Determine feedback information according to the first counting information, or according to the first counting information and the second counting information.
16. The method according to claim 15, wherein said according to said first counting information comprises:

    Determine the number of bits of the feedback information according to the number of target cells scheduled by the joint DCI, and the number of transmissions scheduled by the joint DCI on each target cell or the number of bits of the corresponding feedback information; or

    Determine the number of bits of the feedback information according to the number of transmissions scheduled by the joint DCI on each target cell or the number of bits of the corresponding feedback information; or

    According to the number of target cells scheduled by the joint DCI, the number of transmissions scheduled by the joint DCI on each target cell, or the number of corresponding feedback information bits, and the single DCI is used in each target cell The number of transmissions scheduled on the cell or the number of bits of the corresponding feedback information determines the number of bits of the feedback information.
17. The method according to claim 15, wherein said determining feedback information according to said first counting information and said second counting information comprises:

    According to the number of target cells scheduled by the joint DCI, the number of transmissions scheduled by the joint DCI on each target cell, or the number of corresponding feedback information bits, and the single DCI is used in each target cell The number of transmissions scheduled on the cell or the number of bits of the corresponding feedback information determines the number of bits of the feedback information.
18. The method according to claim 2, wherein, after said transmitting the first downlink control information DCI, the method further comprises:

    In the case where the feedback resources indicated by the at least two first DCIs meet the predetermined condition, feedback the feedback information corresponding to the transmissions scheduled by the at least two first DCIs on the feedback resources indicated by the last DCI;

    Wherein, the last DCI includes: the last joint DCI of the at least two first DCIs, the last single DCI of the at least two first DCIs, and the time at which the at least two first DCIs are located The joint DCI at the last time position in the positions, or the single DCI at the last time position in the time positions where the at least two first DCIs are located.
19. The method according to claim 18, wherein the predetermined condition includes at least one of: resource overlap, partial resource overlap, in the same time range, and the same format.
20. The method according to claim 1, wherein the first counting information comprises: the number of the joint DCI, the total number of the joint DCI, the transmission count of the joint DCI scheduling, and the feedback information corresponding to the joint DCI At least one of the counts.
21. The method according to claim 20, wherein the number of the joint DCI and/or the total number of the joint DCI is a downlink allocation index DAI.
22. The method according to claim 4, wherein the second count information comprises: the number of the single DCI, the total number of the single DCI, the transmission count of the single DCI scheduling, and the feedback information corresponding to the single DCI At least one of the counts.
23. The method according to claim 1, wherein each carrier or cell in the plurality of carriers or cells corresponds to one piece of the first counting information; or

    Each preset carrier or cell group corresponds to one piece of said first counting information;

    The carrier or cell with the same sub-carrier spacing in the multiple carriers or cells corresponds to one piece of the first counting information; or

    A carrier or cell with the same subcarrier interval and cyclic prefix in the multiple carriers or cells corresponds to one piece of the first counting information; or

    The carrier or cell associated with the same feedback cell corresponds to one piece of the first counting information; or

    The carrier or cell associated with the same feedback cell group corresponds to one piece of the first counting information.
24. A communication device, which includes:

    The processing module is configured to transmit the first downlink control information DCI, where the first DCI carries first counting information used to count the joint DCI, and the joint DCI is used to schedule multiple carriers or cells.
25. The communication device according to claim 24, wherein the first DCI is the joint DCI or a single DCI, and the single DCI is used for scheduling a single carrier or cell.
26. The communication device according to claim 25, wherein the single DCI and the joint DCI have an association relationship.
27. The communication device according to claim 25, wherein the first DCI also carries second counting information for counting the single DCI.
28. The communication device according to claim 27, wherein the first counting information and the second counting information use different parameter domains.
29. The communication device according to claim 25, wherein the first counting information is also used to count the single DCI.
30. The communication device according to claim 25 or 29, wherein, when the joint DCI and the single DCI are in the same time unit, the first counting information is in a predetermined order, the number of scheduled carriers or cells, and the DCI Format, DCI type, DCI identifier, DCI size, search space, number of control channel elements, target control channel element location, candidate physical downlink control channel PDCCH aggregation level, time domain location and location of the joint DCI At least one of the time domain positions of the single DCI, counting the joint DCI and/or the single DCI.
31. The communication device according to claim 24, wherein the first counting information comprises: a first number part and/or a first total number part, and the first number part of the first DCI is the first number part of the previous DCI plus 1 or plus N, the first total part of the first DCI is the first total part of the previous DCI plus N, where N is a positive integer greater than or equal to 2.
32. The communication device according to claim 24, wherein the first counting information comprises: a first number part and/or a first total number part, and the first number part of the first DCI is the first number part of the previous DCI plus 1. The first total part of the first DCI is the first total part of the previous DCI plus 1.
33. The communication device according to claim 25, wherein the configuration information corresponding to the joint DCI and the single DCI is different, wherein the configuration information includes: DCI format, DCI type, DCI identifier, DCI size, association At least one of the search space, the associated candidate PDCCH, the associated control channel unit, and the associated listening opportunity.
34. The communication device according to claim 33, wherein the processing module is further configured to determine that the first DCI is the joint DCI or the single DCI according to the time unit in which the first DCI is located.
35. The communication device according to claim 25, wherein the joint DCI and the single DCI are located in different time units.
36. The communication device according to claim 35, wherein the processing module is further configured to determine that the first DCI is the joint DCI or the single DCI according to the time unit in which the first DCI is located.
37. The communication device according to claim 36, wherein the time unit includes: time overlapping PDCCH listening opportunities, one time slot, one sub-time slot, and the start time and/or length are related to the parameters of the scheduled carrier or cell At least one of the time interval between the two scheduled carriers or PDCCH monitoring opportunities corresponding to the cell, the scheduled shared channel PDCCH monitoring opportunities with the same starting position, and the effective time of the monitoring timer.
38. The communication device according to any one of claims 24-37, wherein the processing module is further configured to determine feedback according to the first counting information, or according to the first counting information and the second counting information information.
39. The communication device according to claim 38, wherein said according to said first counting information comprises:

    Determine the number of bits of the feedback information according to the number of target cells scheduled by the joint DCI, and the number of transmissions scheduled by the joint DCI on each target cell or the number of bits of the corresponding feedback information; or

    Determine the number of bits of the feedback information according to the number of transmissions scheduled by the joint DCI on each target cell or the number of bits of the corresponding feedback information; or

    According to the number of target cells scheduled by the joint DCI, the number of transmissions scheduled by the joint DCI on each target cell, or the number of corresponding feedback information bits, and the single DCI is used in each target cell The number of transmissions scheduled on the cell or the number of bits of the corresponding feedback information determines the number of bits of the feedback information.
40. The communication device according to claim 38, wherein said determining feedback information according to said first counting information and said second counting information comprises:

    According to the number of target cells scheduled by the joint DCI, the number of transmissions scheduled by the joint DCI on each target cell, or the number of corresponding feedback information bits, and the single DCI is used in each target cell The number of transmissions scheduled on the cell or the number of bits of the corresponding feedback information determines the number of bits of the feedback information.
41. The communication device according to claim 25, wherein the processing module is further configured to feed back the feedback resource on the feedback resource indicated by the last DCI when at least two feedback resources indicated by the first DCI satisfy a predetermined condition. Feedback information corresponding to at least two first DCI scheduled transmissions;

    Wherein, the last DCI includes: the last joint DCI of the at least two first DCIs, the last single DCI of the at least two first DCIs, and the time at which the at least two first DCIs are located The joint DCI at the last time position in the positions, or the single DCI at the last time position in the time positions where the at least two first DCIs are located.
42. The communication device according to claim 41, wherein the predetermined condition includes at least one of resource overlap, partial resource overlap, in the same time range, and the same format.
43. The communication device according to claim 24, wherein the first counting information comprises: the number of the joint DCI, the total number of the joint DCI, the transmission count of the joint DCI scheduling, and the feedback corresponding to the joint DCI At least one of the information counts.
44. The communication device according to claim 43, wherein the number of the joint DCI and/or the total number of the joint DCI is a downlink allocation index DAI.
45. The communication device according to claim 27, wherein the second count information comprises: the number of the single DCI, the total number of the single DCI, the transmission count of the single DCI scheduling, and the feedback corresponding to the single DCI At least one of the information counts.
46. The communication device according to claim 24, wherein each carrier or cell in the plurality of carriers or cells corresponds to one piece of the first counting information; or

    Each preset carrier or cell group corresponds to one piece of said first counting information;

    The carrier or cell with the same sub-carrier spacing in the multiple carriers or cells corresponds to one piece of the first counting information; or

    A carrier or cell with the same subcarrier interval and cyclic prefix in the multiple carriers or cells corresponds to one piece of the first counting information; or

    The carrier or cell associated with the same feedback cell corresponds to one piece of the first counting information; or

    The carrier or cell associated with the same feedback cell group corresponds to one piece of the first counting information.
47. A network device, comprising: a memory, a processor, and a computer program stored on the memory and capable of running on the processor, and when the computer program is executed by the processor, the computer program implements claims 1 to Steps of the method for transmitting downlink control information according to any one of 23.
48. A terminal device, comprising: a memory, a processor, and a computer program stored on the memory and capable of running on the processor, and the computer program is executed by the processor to implement claims 1 to Steps of the method for transmitting downlink control information according to any one of 23.
49. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and the computer program, when executed by a processor, realizes the transmission of downlink control information according to any one of claims 1 to 23 Steps of the method.
50. A computer program product, which is executed by at least one processor to implement the steps of the method for transmitting downlink control information according to any one of claims 1 to 23.
51. A communication device configured to perform the steps of the method for transmitting downlink control information according to any one of claims 1 to 23.

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