CN113286372A

CN113286372A - Method and communication equipment for transmitting downlink control information

Info

Publication number: CN113286372A
Application number: CN202010103105.5A
Authority: CN
Inventors: 刘思綦; 纪子超; 潘学明; 李�根; 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2021-08-20
Anticipated expiration: 2040-02-19
Also published as: CN113286372B; WO2021164727A1

Abstract

The embodiment of the invention discloses a method and communication equipment for transmitting downlink control information, which are used for enabling UE (user equipment) to correctly determine the number of DCI (downlink control information). The method comprises the following steps: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting joint DCI, and the joint DCI is used for scheduling a plurality of carriers or cells.

Description

Method and communication equipment for transmitting downlink control information

Technical Field

The embodiment of the invention relates to the field of communication, in particular to a method and communication equipment for transmitting downlink control information.

Background

For enhanced control channel coverage considerations, cells are typically deployed on low-band carriers (carriers). However, the bandwidth of the low band carrier is usually insufficient and has been already deployed to other systems in large quantities, such as Long Term Evolution (LTE) system, the downlink signaling overhead of the cell is large, which affects the system capacity.

Based on this, the New Radio (NR) supports the design that one Downlink Control Information (DCI) schedules multiple carriers (Component carriers, CCs) or cells simultaneously, that is, combines with DCI (joint DCI) to reduce the Downlink Control signaling overhead. However, the current DCI design only supports one DCI to schedule one cell, and when a joint DCI schedules multiple carriers or cells, a User Equipment (UE) cannot correctly determine the DCI number.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a method and a communication device for transmitting downlink control information, so that a UE can correctly determine the number of DCIs.

In a first aspect, a method for transmitting downlink control information is provided, where the method is performed by a communication device, and the method includes: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting joint DCI, and the joint DCI is used for scheduling a plurality of carriers or cells.

In a second aspect, a communication device is provided, comprising: the processing module is configured to transmit first downlink control information DCI, where the first DCI carries first counting information used to count a joint DCI, and the joint DCI is used to schedule multiple carriers or cells.

In a third aspect, a terminal device is provided, which includes a processor, a memory and a computer program stored on the memory and operable on the processor, and when executed by the processor, the computer program implements the steps of the method for transmitting downlink control information according to the first aspect.

In a fourth aspect, a network device is provided, which comprises a processor, a memory and a computer program stored on the memory and operable on the processor, the computer program, when executed by the processor, implementing the steps of the method of transmitting downlink control information according to the second aspect.

In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method for transmitting downlink control information according to the first aspect.

In the embodiment of the present invention, by transmitting first downlink control information DCI, where the first DCI carries first counting information used for counting a joint DCI, and the joint DCI is used for scheduling multiple carriers or cells, UE can correctly determine the number of DCIs.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic flow chart of a method of transmitting downlink control information according to one embodiment of the present invention;

fig. 2 is a schematic flow chart of a method of transmitting downlink control information according to one embodiment of the present invention;

fig. 3 is a schematic flow chart of a method of transmitting downlink control information according to one embodiment of the present invention;

fig. 4 is a schematic flow chart of a method of transmitting downlink control information according to one embodiment of the present invention;

fig. 5 is a schematic flow chart of a method of transmitting downlink control information according to one embodiment of the present invention;

fig. 6 is a schematic flow chart of a method of transmitting downlink control information according to one embodiment of the present invention;

fig. 7 is a schematic flow chart of a method of transmitting downlink control information according to one embodiment of the present invention;

fig. 8 is a schematic flow chart of a method of transmitting downlink control information according to one embodiment of the present invention;

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

fig. 10 is a schematic flow chart of a method of transmitting downlink control information according to one embodiment of the present invention;

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

fig. 12 is a schematic configuration 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 Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. "and/or" in various embodiments of the present specification means at least one of front and rear.

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

In the embodiment of the present invention, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile Telephone), a UE, a handset (handset) and a portable device (portable equipment), a vehicle (vehicle), and the like, and the Terminal device may communicate with one or more core networks via a Radio Access Network (RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the Terminal device may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile apparatus.

In the embodiment of the present invention, the network device is a device deployed in a radio access network to provide a wireless communication function for a terminal device. The network device may be a base station, and the base station may include various macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices having a base station function may differ. For example, in an LTE network, called an Evolved node B (eNB or eNodeB), in a third Generation (3G) network, called a node B (node B), or a network device in a later Evolved communication system, etc., although the words are not limiting.

As shown in fig. 1, an embodiment of the present invention provides a method 100 for transmitting downlink control information, which may be performed by a communication device, where the communication device includes: terminal device and/or network device, in other words, the method may be performed by software or hardware installed in the terminal device and/or network device, the method comprising the steps of: the method comprises the following steps:

s102: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting the joint DCI.

Wherein the joint DCI is used for scheduling a plurality of carriers or cells. Specifically, in a scenario where multiple carriers or cells are scheduled by combining DCI, the UE may lose some downlink DCI, so that the UE cannot correctly determine the DCI number, and the UE and the base station may not understand the transmitted join DCI number consistently, so that correct feedback information cannot be determined.

In order to avoid such problems, the first DCI carries first counting information for counting the join DCI, and when some downlink DCI is lost, the user can determine whether the DCI is lost from the first counting information carried by other first DCI, so that the understanding of DCI counting is consistent with that of the network device.

Therefore, the embodiment of the present invention provides a method for transmitting downlink control information, where a first DCI is transmitted, where the first DCI carries first counting information used for counting a joint DCI, and the joint DCI is used for scheduling multiple carriers or cells, so that a UE can know the count of the joint DCI, and a network device and the UE understand the count of the joint DCI consistently.

As shown in fig. 2, an embodiment of the present invention provides a method 200 for transmitting downlink control information, which may be performed by a communication device, where the communication device includes: terminal device and/or network device, in other words, the method may be performed by software or hardware installed in the terminal device and/or network device, the method comprising the steps of: the method comprises the following steps:

s202: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting joint DCI, the first DCI is the joint DCI or single DCI, and the single DCI is used for scheduling a single carrier or a cell.

This step may include the same or similar descriptions as step S102 in the embodiment of fig. 1, and the repeated parts are not described herein again.

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

In one implementation, the join DCI may carry the first count information.

In another implementation, the single DCI may carry the first count information. Optionally, the single DCI carrying the first counting information is associated with the join DCI. Specifically, the first count information for counting a certain join DCI may be carried by the join DCI, or may be carried by a single DCI associated with the join DCI instead of being carried by the join DCI, and the single DCI associated with the join DCI may be, for example: the single DCI closest to the join DCI or the single DCI with preset association relation to the join DCI. Therefore, through flexible DCI design, the UE can know the count of the join DCI, and the network equipment and the UE can have consistent understanding on the count of the join DCI.

Therefore, the embodiment of the present invention provides a method for transmitting downlink control information, which enables a UE to know the counts of single DCI and join DCI, and enables network devices and the UE to have consistent understanding of the counts of the single DCI and the join DCI.

As shown in fig. 3, an embodiment of the present invention provides a method 300 for transmitting downlink control information, which may be performed by a communication device, where the communication device includes: terminal device and/or network device, in other words, the method may be performed by software or hardware installed in the terminal device and/or network device, the method comprising the steps of: the method comprises the following steps:

s302: transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting joint DCI, and the first counting information comprises: the number and/or total number of the joint DCI, the transmission count of the joint DCI scheduling, and at least one of the feedback information count corresponding to the joint DCI.

This step may include the same or similar descriptions as step S102 in the embodiment of fig. 1 or step S202 in the embodiment of fig. 2, and the repeated parts are not described again here.

Further, 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, for example, the count of a Transport Block (TB) or a Code Block Group (CBG), and at least one of the feedback information counts fi (feedback index) corresponding to the joint DCI.

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

The above-mentioned counts may include numbers and/or total numbers, for example, a joint DCI schedules two cells, where TI includes a count TI (counter TI, cTI) and a total TI (total TI, tTI), assuming that cTI ═ 2 and tTI ═ 3 indicate that a total of 3 TBs are scheduled, and the DCI schedules the TI as the first and second TBs.

Likewise, the second count information may include: the second count information includes: the number and/or the total number of the single DCI, the transmission count scheduled by the single DCI, and at least one of the feedback information count corresponding to the single DCI.

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

As shown in fig. 4, an embodiment of the present invention provides a method 400 for transmitting downlink control information, which may be performed by a communication device, where the communication device includes: terminal device and/or network device, in other words, the method may be performed by software or hardware installed in the terminal device and/or network device, the method comprising the steps of: the method comprises the following steps:

s402: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting joint DCI, the first DCI also carries second counting information used for counting single DCI, and the first counting information and the second counting information adopt different parameter domains.

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

In an implementation manner, the first DCI further carries second counting information for counting the single DCI, so that a single DCI count may also be obtained simultaneously through the first DCI.

In addition, an embodiment of the present invention provides a method for transmitting downlink control information, where the first count information and the second count information may use different parameter domains, so that single DCI and join DCI may be counted separately, and the count information may not affect each other.

The embodiment of the invention provides a method for transmitting downlink control information, wherein single DCI counting can be simultaneously obtained through first DCI by using the first DCI to also carry second counting information for counting the single DCI.

As shown in fig. 5, an embodiment of the present invention provides a method 500 for transmitting downlink control information, which may be performed by a communication device, where the communication device includes: terminal device and/or network device, in other words, the method may be performed by software or hardware installed in the terminal device and/or network device, the method comprising the steps of: the method comprises the following steps:

s502: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting the joint DCI.

In an implementation manner, the first count information is further used to count the single DCI, that is, the first count information counts both the join DCI and the single DCI, for example, the first count information is a cDAI and a tDAI, the tDAI indicates a total number of the transmitted single DCI and the join DCI, and the cDAI indicates a number of the first DCI in the transmitted single DCI and the join DCI. Therefore, join DCI and single DCI can be counted simultaneously through the same counting information, and a new parameter design does not need to be additionally introduced.

In one implementation, when the joint DCI and the single DCI are in the same time unit, the first counting information counts the joint DCI and the single DCI according to at least one of a predetermined order, a number of scheduled carriers or cells, a DCI format, a DCI type, a DCI identifier, a DCI size, a search space, a number of Control Channel Elements (CCEs), a target CCE location, an aggregation level of a candidate PDCCH, and a time domain location.

In one implementation, the time unit may include: the PDCCH monitoring opportunities with overlapped time, the same time slot, the same sub-time slot, the time interval of which the starting time and/or length is related to the parameters of the scheduled carrier or cell, 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 one implementation, the DCI Identifier may be, for example, a Radio Network Temporary Identifier (RNTI) that scrambles the DCI, the target CCE location may be, for example, a location of a largest CCE or a location of a smallest CCE, and the like, the time domain location may be, for example, a time domain location of the DCI or a monitoring opportunity associated with the DCI, and counting according to the search space may include counting according to a type of the search space and/or counting according to the Identifier of the search space. The types of search spaces include: at least one of a common search space, a dedicated search space, a search space for scheduling single cells or carriers, a search space for jointly scheduling cells or carriers, a search space for cross-carrier scheduling cells or carriers. For example, DCI in the common search space may be numbered first, and then DCI in the dedicated search space may be numbered first, or for example, DCI in a search space for scheduling a single cell or carrier may be numbered first, and then DCI in a search space for jointly scheduling a cell or carrier may be numbered first, and specifically, DCI in a search space may also be numbered according to the identifier of the search space, for example, according to the size order of the identifier of the search space in which the DCI is located.

In addition, an embodiment of the present invention provides a method for transmitting downlink control information, where the first counting information is further used to count the single DCI, and a join DCI and a single DCI can be counted simultaneously through the same counting information without additionally introducing a new parameter design.

As shown in fig. 6, an embodiment of the present invention provides a method 600 for transmitting downlink control information, which may be performed by a communication device, where the communication device includes: terminal device and/or network device, in other words, the method may be performed by software or hardware installed in the terminal device and/or network device, the method comprising the steps of: the method comprises the following steps:

s602: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting the joint DCI.

This step may include the same or similar descriptions as any one or more of 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, and step S502 in the embodiment of fig. 5, and repeated descriptions are omitted here.

In one implementation, the first count information includes: a first numbered portion and/or a first total portion. In another implementation manner, the second count information may also include: a second numbered portion and/or a second total portion.

In one implementation, the joint counting of the first number part or the first total part may include: the first number part and the first total part adopt joint counting, the first number part adopts joint counting and the first total part adopts independent counting, or the first number part adopts independent counting and the first total part adopts joint counting. Taking the individual counts for the first numbered portion or the first total portion may include: the first numbered portion and the first total portion are both counted separately.

The count of join DCI may include: specifically, the first number part may be a cDAI (counter DAI) for informing the UE of the number of the DCI, and the first total part may be a tDAI (total DAI) for indicating how many DCIs are sent by a current time point (e.g., a current monitoring opportunity). The downlink allocation index DAI may include cDAI and/or tDAI.

Similarly, for the transmission count TI of the joint DCI schedule, the first number part may be cTI (counter TI, count TI) as the number for telling the UE how many transmissions the joint DCI schedule, and the first total part may be tTI (total TI) as the number for indicating how many transmissions are scheduled by the current time point (e.g., the current monitoring opportunity).

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 how much feedback information the joint DCI corresponds to, and the first total part may be tFI (total FI) for indicating how much feedback information the current time point (e.g., current monitoring opportunity monitoring location) corresponds to.

In the following, the DAI is taken as an example for each implementation, but each implementation is also applicable to FI or TI, and a description of similar implementations is not repeated.

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

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

In a third implementation manner of calculating the count information, the first number part of the first DCI is the first number part of the previous DCI plus 1, and the first total number part of the first DCI is the first total number part of the previous DCI plus 1. E.g., cDAI +1, tDAI + 1.

In one implementation, when the joint DCI and the single DCI are in the same time unit, the first counting information counts the joint DCI and the single DCI according to at least one of a predetermined order, a number of scheduled carriers or cells, a DCI format, a DCI type, a DCI identifier, a DCI size, a search space, a number of Control Channel Elements (CCEs), a target CCE location, an aggregation level of a candidate PDCCH, and a time domain location. The following description may be made to count the join DCI and the single DCI.

For example, in a predetermined order comprising: if single DCI and join DCI exist in the time unit, counting the single DCI first and then counting the join DCI, or vice versa, counting the join DCI first and then counting the single DCI. For example, there are 2 single DCIs and 1 join DCI in one slot, and the single DCI is counted first and then the join DCI is counted, that is, the cDAI of the two single DCIs is x, x +1, and the cDAI of the join DCI is x + n, and if the join DCI schedules two cells, n may be 2 or 3. For another example, there are 2 single DCIs and 1 join DCI in one slot, and the join DCI is counted first and then the single DCI is counted, that is, the cDAI of the join 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 join DCI in a monitoring opportunity, the single DCI is counted first, and then the join DCI is counted, that is, the cDAI of the single DCI is x, the cDAI of the join DCI is x + n, and if the join DCI schedules two cells, n may be 1 or 2.

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

For example, there are 1 single DCI and 1 join DCI in a monitoring opportunity, the number of CCEs occupied by the two DCIs is 4 and 8, and it is assumed that DCI counting is performed in the order of the number of CCEs occupied from small to large, so that the single DCI is counted first and then the join DCI is counted, the cDAI of the single DCI is x, the cDAI of the join DCI is x + n, and n may be 1 or 2 assuming that the join DCI schedules two cells.

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

s702: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting joint DCI, the first DCI is the joint DCI or single DCI, the single DCI is used for scheduling a single carrier or a cell, and the joint DCI and the single DCI have different corresponding configuration information.

This step may include the same or similar descriptions as any one or more of 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. 6, and repeated descriptions for repeated parts are omitted here.

In one implementation, the join DCI and the single DCI have different corresponding configuration information, where the configuration information includes: at least one of a format of the DCI, a type of the DCI, a DCI identifier, a size of the DCI, a Search Space (Search Space) associated with the DCI, a candidate (candidate) Physical Downlink Control Channel (PDCCH) associated with the DCI, a CCE associated with the DCI, and a listening opportunity (listening opportunity) associated with the DCI.

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, whether the DCI carries the first count information and/or the second technical information, the configuration information corresponding to the join DCI and the single DCI may be different.

S704: and determining the first DCI to be the joint DCI or the single DCI according to the configuration information of the first DCI.

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

For example, Joint DCI and single DCI are respectively associated with different monitoring occase or different SSs, and a user can distinguish whether Joint DCI or single DCI is received when monitoring PDCCH according to whether Joint DCI or single DCI is associated with the current monitoring occase.

And the user deduces the corresponding counts of the join DCI and the single DCI according to the DCI format, the DCI type, the RNTI, the SS, the monitoring occase, the number of the associated cells and the like. In this case, the two DCIs are associated with different features, and whether the DCI indicates a joint count or a separate count, the user can identify the actual respective counts of the two DCIs through these features.

In one implementation, the join DCI and the single DCI are located in different time units. That is, the user assumes that single DCI and join DCI do not occur simultaneously in the same time unit. Thus, after the first downlink control information DCI is transmitted, the first DCI may be determined to be the join DCI or the single DCI according to a time unit in which the first DCI is located.

The foregoing implementation may be applied to a case where there is no difference or little difference between the Joint DCI and the single DCI corresponding to the configuration information, for example, a case where at least one of the Joint DCI format, the DCI type, the scrambled RNTI, the associated SS, and the associated monitoring session are shared. For example, one search space may be allocated for transmitting Joint DCI and single DCI, but Joint DCI and single DCI are not transmitted simultaneously for the same or different monitoring occase within the same slot.

Wherein, the same sub-slot may comprise the same sub-slot (Subslot) or mini-slot (mini-slot), and the start time and/or length may be a time interval related to a parameter of the scheduled carrier or cell, where the parameter may be numerology or SCS of the carrier or cell, and the PDCCH monitoring opportunities with the same start position of the scheduled shared channel may be PDCCH monitoring opportunities on two cells with the earliest start position of the scheduled PDSCH/PUSCH both being n, for example.

As shown in fig. 8, an embodiment of the present invention provides a method 800 for transmitting downlink control information, which may be performed by a communication device, where the communication device includes: terminal device and/or network device, in other words, the method may be performed by software or hardware installed in the terminal device and/or network device, the method comprising the steps of: the method comprises the following steps:

s802: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting the joint DCI.

This step may include the same or similar descriptions as one or more of 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. 6, and step S702 in the embodiment of fig. 7, and repeated descriptions for repeated parts are omitted here.

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

For the transmission of the downlink data packet, the user can feed back feedback information, i.e. HARQ-ACK information, on the uplink resource according to the receiving condition to inform the control node whether the transmission of the downlink data packet is successful or not.

And determining feedback information according to the first counting information or the first counting information and the second counting information, so that a user can correctly determine the feedback information, and the condition that the feedback information cannot be correctly determined due to joint DCI receiving or decoding failure is avoided.

In a first implementation manner of determining feedback information, the bit number of the feedback information is determined according to the number of target cells scheduled by the join DCI, and the number of transmissions scheduled by the join DCI on each target cell or the bit number of corresponding feedback information, at this time, the number of actually scheduled transmissions may be known by the first counting information, and thus, feedback is performed according to the number of transmissions.

For example, assuming that I cell supports joint DCI scheduling (joint DCI exists), joint DCI I on cell I schedules N_iCell and scheduled M on each cell j it schedules_i,jTB or M_i,jA CBG or corresponding M_i,jA HARQ-ACK bit; assuming that K cells support single DCI scheduling, scheduling of single DCI on cell K is O_kTB or O_kA CBG or corresponding O_kOne HARQ-ACK bit. In the above implementation, each join DCI of cell i corresponds to N_i*max_i(M_i,j) One HARQ-ACK bit or sum corresponding to each joint DCI of the cell i_i(M_i,j) The number of HARQ-ACK bits, or each join DCI in the join DCI of the I cells, corresponds to max (N)_i)*max(M_i,j) One HARQ-ACK bit. max_i(M_i,j) The maximum value, sum, of the number of transmissions on the cell scheduled by the join DCI for cell i or the number of corresponding HARQ-ACK bits_i(M_i,j) The number of transmissions on all cells scheduled for the join DCI for cell i or the total number of corresponding HARQ-ACK bit numbers. max (N)_i) Is the maximum value of the number of cells scheduled in the join DCI for I cells. max (M)_i,j) The maximum value of the number of scheduled transmissions on the cell or the number of corresponding HARQ-ACK bits scheduled in the join DCI of the I cell.

For example, join DCI exists in cell 1 and cell 2, the join DCI in cell 1 schedules two cells, and the join DCI in cell 2 schedules three cells, where each cell is scheduled with one TB by the join DCI. Then the join DCI of cell 1 corresponds to 2 max₁(M_1,j) If 2bit, the join DCI of cell 2 corresponds to 3 max₂(M_2,j) Either the 3-bit or the,join DCI of cell 1 corresponds to sum₁(M_1,j) If 2bit, join DCI of cell 2 corresponds to sum₂(M_2,j) 3bit or joint DCI for cell 1 and cell 2 both correspond to max (N)_i)*max(M_i,j)＝3*1＝3bit。

Furthermore, for the case where a joint DCI is supported on only one carrier or cell (I ═ 1), assuming that the DCI schedules N cells, N × max (M) is fed back at this time_1,j) The number of scheduled transmissions or corresponding HARQ-ACK bits for each scheduled cell is the same (e.g., M)_1,jM), N × M HARQ-ACK bits are fed back.

In one implementation, when one of the first or second implementations of calculating the count information is adopted in step S802 in step S102 in the embodiment of fig. 1, step S402 in the embodiment of fig. 4, and step S602 in the embodiment of fig. 6, the first implementation of determining the feedback information described above may be adopted in this step accordingly.

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

In this case, the number of actually transmitted DCIs may be known through the first count information, but the total number of actually scheduled transmissions is not known, and thus feedback is performed according to the number of DCIs, for example, max corresponds to each join DCI of the cell i_i(M_i,j) One HARQ-ACK bit, or each join DCI of the I cells corresponds to max (M)_i,j) One HARQ-ACK bit or sum corresponding to each joint DCI of the cell i_i(M_i,j) The number of HARQ-ACK bits, or each join DCI of the I cell corresponds to max (sum)_i(M_i,j) ) HARQ-ACK bits. max_i(M_i,j) Maximum value of the number of transmissions on the cell scheduled for the join DCI of cell i or the number of corresponding HARQ-ACK bits, max (M)_i,j) The maximum value of the number of scheduled transmissions on the cell scheduled by each join DCI in the join DCIs of the I cell or the number of corresponding HARQ-ACK bits. sum_i(M_i,j) Cell scheduled for join DCI of cell iNumber of transmissions on or the total number of corresponding HARQ-ACK bit numbers, max (sum)_i(M_i,j) The maximum value of the number of scheduled transmissions on the cell scheduled by each join DCI in the join DCIs of the I cells or the total number of the number of corresponding HARQ-ACK bits.

For example, join DCI exists on cell 1 and cell 2, and the join DCI on cell 1 and cell 2 both schedule two cells, where one TB is scheduled by the join DCI on each cell. The join DCI of cell 1 corresponds to max₁(M_1,j) If 1bit, the join DCI for cell 2 corresponds to max₂(M_2,j) Alternatively, joint DCI for cell 1 and cell 2 both correspond to max (1,1) ═ 1bit.

For example, join DCI exists on cell 1 and cell 2, the join DCI on cell 1 schedules two cells, and the join DCI on cell 2 schedules three cells, where one TB is scheduled by the join DCI on each cell. The join DCI of cell 1 corresponds to max₁(M_1,j) If 1bit, the join DCI for cell 2 corresponds to max₂(M_2,j) Alternatively, joint DCI for cell 1 and cell 2 both correspond to max (1,1) ═ 1bit.

For example, join DCI exists on cell 1 and cell 2, and the join DCI on cell 1 and cell 2 both schedule two cells, where one TB is scheduled by the join DCI on each cell. The joint DCI of cell 1 corresponds to sum₁(M_1,j) If 2bit, join DCI of cell 2 corresponds to sum₂(M_2,j) 2bit or joint DCI for cell 1 and cell 2 both correspond to max (sum)_i(M_i,j))＝max(2,2)＝2bit。

For example, join DCI exists on cell 1 and cell 2, join DCI on cell 1 schedules two cells, and join DCI on cell 2 schedules three cells, where one TB is scheduled by the join DCI on each cell. The joint DCI of cell 1 corresponds to sum₁(M_1,j) If 2bit, join DCI of cell 2 corresponds to sum₂(M_2,j) 3bit or joint DCI for cell 1 and cell 2 both correspond to max (sum)_i(M_i,j))＝max(2,3)＝3bit。

In a third implementation manner of determining feedback information, the bit number of the feedback information is determined according to the number of target cells scheduled by the join DCI, the number of transmissions scheduled by the join DCI on each target cell or the bit number of the corresponding feedback information, and the number of transmissions scheduled by the single DCI on each target cell or the bit number of the corresponding feedback information.

For example, each DCI (join 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) Number of cells N scheduled for each join DCI in join DCIs of I cells_iAnd the maximum value of the product of the number of transmissions on the cell scheduled by the DCI or the number of corresponding feedback information bits. max (O)_k) The maximum value of the transmission number of single DCI scheduling of K cells or the corresponding feedback information bit number.

In this case, the number of actually transmitted DCIs may be known through the first count information, but the total number of actually scheduled transmissions is not known, and since the scheduled cell corresponding to each DCI does not exceed max (ni), the number of transmissions corresponding to each scheduled cell is not greater than max (N (max) and not greater than max (N)_i*M_i,j),max(O_k) Therefore, feedback is performed according to the maximum overhead, and the size of the feedback information can be relatively fixed.

Specifically, assuming that single DCI schedules two TBs and joint DCI schedules two cells, where each cell is scheduled with one TB by the joint DCI, each DCI corresponds to 2-bit HARQ-ACK information. Specifically, assuming that a single DCI schedules two TBs and a joint DCI schedules three cells, where each cell is scheduled with one TB by the joint DCI, each DCI corresponds to max (1 × 3,2) ═ 3bit HARQ-ACK information.

In one implementation, when one of the third implementations of calculating the count information in step S802 is adopted in step S102 in the embodiment of fig. 1, step S502 in the embodiment of fig. 5, and step S602 in the embodiment of fig. 6, the second or third implementation of determining the feedback information may be adopted in this step accordingly.

In addition, in an implementation manner, when the feedback resources indicated by the at least two first DCIs satisfy a predetermined condition, feedback information corresponding to transmission scheduled by the at least two first DCIs is fed back on the feedback resources indicated by the last DCI.

Wherein the predetermined condition includes: the resources overlap, the partial resources overlap, are in the same time range, e.g., the same slot, and are in the same format, e.g., all are at least one of long format (long format).

The final DCI includes: a last join DCI of the at least two first DCIs, a last single DCI of the at least two first DCIs, a join DCI at a last time position of time positions of the at least two first DCIs, or a single DCI at a last time position of time positions of the at least two first DCIs.

For example, there are 1 single DCI, and 1 join DCI at the last time position in the time positions where the at least two first DCIs are located, where the DCIs respectively indicate

feedback resources

1 or 2 or 3 or 4, and the feedback resources overlap, then last DCI is the join DCI at monitoring opportunity 3, and the resource used for feeding back the feedback information corresponding to the DCIs feedback resource 4.

The DCI transmitted in the embodiments of fig. 4 to 8 is described below by way of example.

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

As shown in fig. 9a, the DCI shown in this figure adopts the implementation manner that the first counting information described in the embodiment of fig. 5 is also used for counting the single DCI, and the first implementation manner that the counting information described in the embodiment of fig. 6 is calculated, which specifically includes:

the DCI corresponding to the CC or the cell 0 and the CC or the cell 1 is single DCI, only one corresponding cell is scheduled, joint DCI of the CC or the cell 2 schedules two CCs or cells, the cDAI and the tDAI are carried in the DCI, and the single DCI and the joint DCI are numbered. For each single DCI,1 is added to the cDAI and the tDAI, and 2 is added to each join DCI, so that the DAI gives the number and the total number of the scheduled transmission, and the user can conveniently determine the feedback information.

As shown in fig. 9b, the DCI shown in this figure adopts an implementation manner that the first counting information described in the embodiment of fig. 5 is also used for counting the single DCI, and a second implementation manner that the counting information described in the embodiment of fig. 6 is calculated, which specifically includes:

the DCI corresponding to the CC or the

cell

0, 1 and 4 is single DCI, only one corresponding cell is scheduled, joint DCI of the CC or the cell 2 schedules two CC or cells (CC or the cell 2 and 3), the cDAI and the tDAI are carried in the DCI, and the single DCI and the joint DCI are numbered. For each single DCI, both cDAI and tDAI are incremented by 1, and for each join DCI, both cDAI and tDAI are incremented by 2. Therefore, the DAI gives the total number of scheduling transmission, so that a user can conveniently determine feedback information, and the number of the DCI is also given, so that the condition of misunderstanding caused by continuous loss of two join DCIs is reduced.

As shown in fig. 9c, the DCI shown in this figure adopts an implementation manner that the first count information and the second count information described in the embodiment of fig. 4 may adopt different parameter domains, and the first implementation manner of calculating the count information described in the embodiment of fig. 6 specifically includes:

the DCI corresponding to the CC or the cell 0 and the CC or the cell 1 is single DCI, only one corresponding cell is scheduled, joint DCI of the CC or the cell 2 schedules two CCs or cells, the single DCI carries cDAI and tDAI aiming at the single DCI, and the single DCI is counted; and carrying the cDAI and tDAI aiming at the joint DCI in the joint DCI, and counting the joint DCI. For each single DCI, both cDAI and tDAI in the single DCI are incremented by 1, and for each join DCI, both cDAI and tDAI in the join DCI are incremented by 2. Thus, single DCI and join DCI are separately counted, so that join DC does not affect feedback under the existing single DCI.

As shown in fig. 9d, the DCI shown in this figure adopts an implementation manner that the first count information and the second count information described in the embodiment of fig. 4 may adopt different parameter domains, and a second implementation manner of calculating the count information described in the embodiment of fig. 6, which specifically includes:

the DCI corresponding to the CC or the cell 0 and the CC or the cell 1 is single DCI, only one corresponding cell is scheduled, joint DCI of the CC or the cell 2 schedules two CCs or cells, the single DCI carries cDAI and tDAI aiming at the single DCI, and the single DCI is counted; and carrying the cDAI and tDAI aiming at the joint DCI in the joint DCI, and counting the joint DCI. For each single DCI, the cDAI and tDAI in the single DCI are both increased by 1, and for each join DCI, the cDAI in the join DCI is increased by 1 and the tDAI is both increased by 2. Therefore, single DCI and join DCI are separately counted, so that the join DCI does not influence the feedback under the existing single DCI.

As shown in fig. 9d, the determining, according to the configuration information of the DCI, the join DCI included in the DCI and the implementation manner of the single DCI included in the DCI according to the embodiment in fig. 7 are specifically included in the DCI shown in this figure:

the DCI corresponding to the CC or the cell 0 and the CC or the cell 1 is single DCI, only one corresponding cell is scheduled, joint DCI of the CC or the cell 2 schedules two CCs or cells, the cDAI and the tDAI are carried in the DCI, and the single DCI and the joint DCI are counted. For single DCI, both cDAI and tDAI are incremented by 1, and for join DCI, both cDAI and tDAI are incremented by 2. Assuming that joint DCI and single DCI are different in a monitoring occase, a user distinguishes whether the received DCI is joint DCI or single DCI through a DCI format, an RNTI or the monitoring occase, so that the number and the number of the joint DCI and the single DCI are deduced. For example, if a user receives 6 DCIs and finds tDAI-8 cDAI-8, two join DCIs may be derived.

Thus, the user can determine the feedback by determining the respective count information through the difference between the single DCI and the join DCI.

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

s1002: and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting the joint DCI.

This step may include the same or similar descriptions as any one or more of 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. 6, step S702 in the embodiment of fig. 7, and step S802 in the embodiment of fig. 8, and repeated parts are not repeated herein.

In one implementation, each of the plurality of carriers or cells corresponds to one of the first count information. For example, the first count information includes: and the number and/or the total number of the joint DCI are Downlink Assignment Indexes (DAIs). The first count information may include one DAI, one DAI corresponding to one carrier or cell. The first count information may include a plurality of DAIs, each DAI corresponds to a scheduled carrier or cell, or each DAI corresponds to a carrier or cell, and the DAIs corresponding to each carrier or cell may be the same or different.

Taking the first counting information as the counting DAI of the DCI for example, the first DCI carries M cDAI domains, each cDAI domain corresponds to one carrier or cell, and it is assumed that one join DCI is transmitted and the join DCI schedules N carriers or cells, and the scheduled carrier or cell corresponds to a cDAI + 1. Optionally, the cDAI corresponding to the carrier or cell that is not scheduled is not changed.

Optionally, the join DCI only carries one tDAI, and if one join DCI is sent and the join DCI schedules N carriers or cells, then tDAI + N. Or optionally, the first DCI carries M tDAI, and tDAI +1 corresponding to the scheduled carrier or cell. Optionally, tDAI corresponding to carriers or cells that are not scheduled is not changed.

And under the condition that N is less than or equal to M, the situation that the carrier waves or cells scheduled by the joint DCI are changed can be adapted. In case of N ═ M, each first count information may be made to correspond to one scheduled carrier or cell.

In another implementation, each preset carrier or cell group corresponds to one piece of the first count information. The predetermined carriers or cell groupings may be preconfigured by the network device or agreed upon by a protocol. The pre-set carrier or cell grouping may be a scheduled carrier or cell grouping. Likewise, the first count information may include one DAI, one DAI corresponding to one preset carrier or cell group. The first count information may include a plurality of DAIs, each DAI corresponds to a preset carrier or cell group, and the DAIs corresponding to each preset carrier or cell group may be the same or different.

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

For example, one count field is Xbit, M count fields are M Xbit, the DCI includes M Xbit, and the count fields correspond to the size sequence and the count of the carrier or cell identifier, for example, the carrier or cell identifier 0 corresponds to the lowest X bit (0 to X-1bit), and the carrier or cell identifier 1 corresponds to the X to 2X-1bit, where the carrier or cell may include a carrier or cell configured but not scheduled by the join DCI.

For example, one count field is xbait, N count fields are N × xbait, the DCI schedules N cells, the DCI includes N × xbait, and the size order and the count of the identifier of the scheduled carrier or cell correspond to each other, for example, the smaller the identifier is, the lower the bits are, or the larger the identifier is, the lower the bits are. The identifier may be a higher layer configured identifier or a physical layer signaling indicator identifier, or may be a relative identifier determined after sorting according to the size of the higher layer configured identifier or the physical layer signaling indicator identifier.

For example, N is 2, the DCI schedules two carriers or cells identified as 0 and 7, the carrier or cell identified as 0 corresponds to the lowest X bit (0 th to X-1bit), and the carrier or cell identified as 7 corresponds to the X th to 2X-1 bit.

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

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

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

In another implementation, the carriers or cells associated with the same feedback cell correspond to one piece of the first counting information.

In another implementation, the carriers or cells associated with the same feedback cell group correspond to one piece of the first counting information.

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 used to count a joint DCI, and the joint DCI is used to schedule multiple carriers or cells.

In one implementation, the first DCI is the joint DCI or a single DCI, and the single DCI is used to schedule a single carrier or cell.

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

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

In one implementation, the first count information and the second count information employ different parameter domains.

In one implementation, the first counting information is further used for counting the single DCI.

In one implementation, in a case that the joint DCI and the single DCI are in the same time unit, the first counting information counts the joint DCI and the single DCI according to at least one of a predetermined order, a number of scheduled carriers or cells, a DCI format, a DCI type, a DCI identifier, a DCI size, a search space, a number of control channel elements, a target control channel element position, an aggregation level of a candidate physical downlink control channel PDCCH, and a time domain position.

In one implementation, the first count information includes: and the first number part of the first DCI is the first number part of the previous DCI plus 1 or plus N, and the first total number part of the first DCI is the first total number part of the previous DCI plus N, wherein N is a positive integer greater than or equal to 2.

In one implementation, the first count information includes: and 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 part of the previous DCI plus 1.

In one implementation, the joint DCI and the single DCI have different corresponding configuration information, where the configuration information includes: at least one of a format of the DCI, a type of the DCI, an identifier of the DCI, a size of the DCI, an associated search space of the DCI, an associated PDCCH candidate of the DCI, an associated control channel unit of the DCI, and an associated monitoring opportunity of the DCI.

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

In one implementation, 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, after the transmission of the first downlink control information DCI, that the first DCI is the joint DCI or the single DCI according to a time unit in which the first DCI is located.

In one implementation, the time unit includes: the PDCCH monitoring opportunities with overlapped time, the same time slot, the same sub-time slot, the time interval of which the starting time and/or length is related to the parameters of the scheduled carrier or cell, 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 one implementation, the processing module 1110 is further configured to determine feedback information according to the first count information or according to the first count information and the second count information after the transmission of the first downlink control information DCI.

In an implementation manner, the processing module 1110 is configured to determine the bit number 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 bit number of the corresponding feedback information; or

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

And determining the bit number of the feedback information according to the number of the target cells scheduled by the joint DCI, the number of transmissions scheduled on each target cell by the joint DCI or the bit number of the corresponding feedback information, and the number of transmissions scheduled on each target cell by the single DCI or the bit number of the corresponding feedback information.

In an implementation, after the first downlink control information DCI is transmitted, if feedback resources indicated by at least two first DCIs meet a predetermined condition, feeding back feedback information corresponding to transmission scheduled by the at least two first DCIs on the feedback resource indicated by the last DCI;

wherein the last DCI comprises: the last joint DCI in the at least two first DCIs, the last single DCI in the at least two first DCIs, the joint DCI at the last time position in the time positions where the at least two first DCIs are located, or the single DCI at the last time position in the time positions where the at least two first DCIs are located.

In one implementation, the predetermined condition includes: at least one of overlapping resources, partially overlapping resources, being in the same time range, and being in the same format.

In one implementation, the first count information includes: the number and/or total number of the joint DCI, the transmission count of the joint DCI scheduling, and at least one of the feedback information count corresponding to the joint DCI.

In one implementation, the number and/or the total number of the joint DCI is a downlink assignment index DAI.

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

In one implementation, each of the plurality of carriers or cells corresponds to one of the first count information; or

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

the carriers or cells with the same subcarrier interval in the plurality of carriers or cells correspond to one piece of first counting information; or

The sub-carrier interval and the carrier or the cell with the same cyclic prefix in the plurality of carriers or the cells correspond to one piece of first counting information; or

Associating the carriers or cells of the same feedback cell with one piece of the first counting information; or

And the carrier or the cell associated with the same feedback cell group corresponds to one piece of first counting information.

The communication device 1100 according to the embodiment of the present invention may refer to the processes corresponding to the

methods

100 and 800 and 1000 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions in the communication device 1100 are respectively for implementing the corresponding processes in the

methods

100 and 800 and 1000, and can achieve the same or equivalent technical effects, and for brevity, no further description is provided herein.

Fig. 12 is a block diagram of a terminal device of another embodiment of the present invention. The communication device according to the embodiment of the invention can be a terminal device. The terminal apparatus 1200 shown in fig. 12 includes: at least one processor 1201, memory 1202, at least one network interface 1204, and a user interface 1203. The various components in terminal device 1200 are coupled together by a bus system 1205. It is understood that bus system 1205 is used to enable connected communication between these components. Bus system 1205 includes, in addition to a data bus, a power bus, a control bus, and a status signal bus. But for clarity of illustration the various buses are labeled as bus system 1205 in figure 12.

The user interface 1203 may include, among other things, a display, a keyboard, a pointing device (e.g., a mouse, trackball), a touch pad, or a touch screen.

It is to be understood that the memory 1202 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1202 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1202 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 12021 and application programs 12022.

The operating system 12021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 12022 contains various applications such as a Media Player (Media Player), a Browser (Browser), and the like, and is used to implement various application services. A program implementing a method according to an embodiment of the present invention may be included in the application 12022.

In this embodiment of the present invention, the terminal device 1200 further includes: a computer program stored 1202 on the memory and executable on the processor 1201, the computer program, when executed by the processor 1201, implementing the steps of the

methods

100, 800, 1000.

The method disclosed by the embodiment of the invention can be applied to the processor 1201 or implemented by the processor 1201. The processor 1201 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1201. The Processor 1201 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer readable storage medium has stored thereon a computer program, which when executed by the processor 1201, performs the steps of the embodiments of the method 100 as described above.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

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

Referring to fig. 13, fig. 13 is a structural diagram of a network device applied in the embodiment of the present invention, which can implement the details of

method embodiments

100 and 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, wherein:

in this embodiment of the present invention, the network device 1300 further includes: a computer program stored on the memory 1303 and executable on the processor 1301, the computer program, when executed by the processor 1301, implementing the steps of the method 500.

In fig. 13, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1301 and various circuits of memory represented by memory 1303 linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1302 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

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

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the

method embodiments

100 and 800 and 1000, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for transmitting downlink control information, the method being performed by a communication device, the method comprising:

and transmitting first Downlink Control Information (DCI), wherein the first DCI carries first counting information used for counting joint DCI, and the joint DCI is used for scheduling a plurality of carriers or cells.

2. The method of claim 1, wherein the first DCI is the joint DCI or a single DCI, the single DCI being used to schedule a single carrier or cell.

3. The method of claim 2, wherein the single DCI has an associative relationship with the joint DCI.

4. The method of claim 2, wherein the first DCI also carries second counting information for counting the single DCI.

5. The method of claim 4, wherein the first count information and the second count information employ different parameter domains.

6. The method of claim 2, wherein the first count information is also used to count the single DCI.

7. The method of claim 2 or 6, wherein the first count information counts the joint DCI and/or the single DCI in at least one of a predetermined order, a number of scheduled carriers or cells, a DCI format, a type of DCI, a DCI identity, a DCI size, a search space, a number of control channel units, a target control channel unit position, an aggregation level of a candidate Physical Downlink Control Channel (PDCCH), a time domain position of the joint DCI, and a time domain position of the single DCI, in case the joint DCI and the single DCI are in a same time unit.

8. The method of claim 1, wherein the first count information comprises: and the first number part of the first DCI is the first number part of the previous DCI plus 1 or plus N, and the first total number part of the first DCI is the first total number part of the previous DCI plus N, wherein N is a positive integer greater than or equal to 2.

9. The method of claim 1, wherein the first count information comprises: and 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 part of the previous DCI plus 1.

10. The method of claim 2, wherein configuration information corresponding to the joint DCI and the single DCI is different, wherein the configuration information comprises: at least one of a format of the DCI, a type of the DCI, a DCI identity, a DCI size, an associated search space, an associated PDCCH candidate, an associated control channel element, and an associated monitoring opportunity.

11. The method of claim 10, wherein after the transmitting the first downlink control information, DCI, the method further comprises:

and determining the first DCI to be the joint DCI or the single DCI according to the configuration information of the first DCI.

12. The method of claim 2, wherein the joint DCI and the single DCI are located in different time units.

13. The method of claim 12, wherein after the transmitting the first downlink control information, DCI, the method further comprises:

and determining the first DCI to be the joint DCI or the single DCI according to the time unit of the first DCI.

14. The method of claim 13, wherein the time unit comprises: at least one of PDCCH monitoring opportunities with overlapping time, a time slot, a sub-time slot, a time interval with a starting time and/or length related to parameters of a scheduled carrier or cell, a time interval between PDCCH monitoring opportunities corresponding to two scheduled carriers or cells, PDCCH monitoring opportunities with the same starting position of a scheduled shared channel, and effective time of a monitoring timer.

15. The method according to any of claims 1-14, wherein after said transmitting the first downlink control information, DCI, the method further comprises:

and determining feedback information according to the first counting information or the first counting information and the second counting information.

16. The method of claim 15, wherein the determining, based on the first count information, comprises:

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

17. The method of claim 15, wherein the determining feedback information based on the first count information and the second count information comprises:

18. The method of claim 2, wherein after the transmitting the first downlink control information, DCI, the method further comprises:

under the condition that the feedback resources indicated by the at least two first DCIs meet the preset conditions, feeding back the feedback information corresponding to the transmission scheduled by the at least two first DCIs on the feedback resources indicated by the last DCI;

19. The method of claim 18, wherein the predetermined condition comprises: at least one of overlapping resources, partially overlapping resources, being in the same time range, and being in the same format.

20. The method of claim 1, wherein the first count information comprises: at least one of 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 count corresponding to the joint DCI.

21. The method of claim 20, wherein a number of the joint DCI and/or a total number of the joint DCI is a Downlink Assignment Index (DAI).

22. The method of claim 4, wherein the second count information comprises: at least one of the number of the single DCI, the total number of the single DCI, the transmission count scheduled by the single DCI, and the feedback information count corresponding to the single DCI.

23. The method of claim 1, wherein each of the plurality of carriers or cells corresponds to one of the first count information; or

24. A communication device, comprising:

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

25. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of transmitting downlink control information according to any one of claims 1 to 23.

26. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of transmitting downlink control information according to any one of claims 1 to 23.

27. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for transmitting downlink control information according to any one of claims 1 to 23.