CN113518454A

CN113518454A - Method for configuring downlink control information and method for receiving downlink data

Info

Publication number: CN113518454A
Application number: CN202011398951.0A
Authority: CN
Inventors: 付景兴; 王轶; 孙霏菲
Original assignee: Samsung Electronics Co Ltd
Current assignee: Beijing Samsung Telecom R&D Center; Samsung Electronics Co Ltd
Priority date: 2020-04-10
Filing date: 2020-12-01
Publication date: 2021-10-19

Abstract

The embodiment of the application provides a configuration method of downlink control information and a receiving method of downlink data, and belongs to the technical field of communication. The downlink data receiving method comprises the following steps: receiving downlink control information DCI on a serving cell; and receiving data transmitted by a Physical Downlink Shared Channel (PDSCH) of at least one service cell scheduled by the DCI according to the DCI. Based on the scheme provided by the embodiment of the application, the dispatching of the PDSCH of one or more service cells can be realized on one physical downlink control channel PDCCH, and the resources occupied by the PDCCH can be saved.

Description

Method for configuring downlink control information and method for receiving downlink data

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method for configuring downlink control information, a method for receiving downlink data, and apparatuses, electronic devices, and readable storage media corresponding to the methods.

Background

In a Long-term Evolution (LTE) system, transmission of a Physical Downlink Shared Channel (PDSCH) and a Physical Uplink Shared Channel (PUSCH) is scheduled through Downlink Control Information (DCI) transmitted through a Physical Downlink Control Channel (PDCCH).

The Search Space for transmitting DCI includes a Common Search Space (CSS) set and a User Equipment (UE) -specific Search Space (USS) set, where any one UE may demodulate and decode for the CSS and only a specific UE may demodulate and decode for the USS. The format of the DCI may be divided into DCI formats (e.g., DCI formats 1-0 and 1-1) for scheduling PDSCH and DCI formats (e.g., DCI formats 0-0 and 0-1) for scheduling PUSCH, and may be further divided into fallback DCI formats (e.g., DCI formats 0-0 and 1-0) and non-fallback DCI formats (e.g., DCI formats 0-1 and 1-1), where the number of information bits (simply referred to as the number of bits) included in the DCI of different formats (e.g., configured or required, etc.) may be the same or different, and the number of bits included in the DCI having a specific DCI format (e.g., configured or required, etc.) may be simply referred to as the number of bits of the specific DCI format.

The PDCCH for scheduling PDSCH and PUSCH may be located in one serving cell with the scheduled PDSCH and PUSCH and is called co-carrier scheduling, and the PDCCH for scheduling PDSCH and PUSCH may be located in a different serving cell with the scheduled PDSCH and PUSCH and is called cross-carrier scheduling, where a cell for transmitting PDCCH is called a scheduling serving cell and a serving cell for transmitting PDSCH/PUSCH is called a scheduled serving cell. In a Carrier Aggregation (CA) system, a serving cell may include a Primary cell (Pcell, Primary cell) and a Secondary cell (Scell, Secondary cell), and the spatial configurations of subcarriers of the Pcell and the Scell may be the same or different, and at this time, the UE may receive and transmit control information and data in multiple serving cells at the same time. When the Pcell and the Scell exist, how to more reasonably allocate cell resources occupied by the PDCCH is also an important problem to be improved.

Disclosure of Invention

The purpose of the present application is to better satisfy the communication needs and to solve at least one of the technical drawbacks of the prior art.

In a first aspect, an embodiment of the present application provides a method for configuring downlink control information, where the method includes:

configuring first DCI of a format, wherein the first DCI is used for scheduling PDSCH of at least one second serving cell on one first serving cell.

Optionally, the bit number of the first DCI satisfies at least one of the following:

the bit number of the first DCI is equal to the designated bit number;

the bit number of the first DCI is not equal to the bit number of any existing DCI;

the bit number of the first DCI is equal to the bit number of the existing first DCI of the first serving cell;

the bit number of the first DCI is equal to the bit number of a second designated DCI existing in any one of at least one second service cell;

when the first DCI is used for scheduling PDSCH of at least two second serving cells, the bit number of the first DCI is equal to the bit number of a third designated DCI meeting a first preset condition in existing third designated DCI of each serving cell in the at least two second serving cells;

when the first DCI is used for scheduling the PDSCH of the at least two second serving cells, the bit number of the first DCI is equal to the bit number of an existing fourth specific DCI of a serving cell satisfying the second preset condition among the at least two second serving cells.

Optionally, when the first DCI is used to schedule the PDSCHs of the at least two second serving cells, and the bit number of the first DCI is equal to the bit number of a second designated DCI existing in any one of the at least one second serving cell, the method further includes:

if the bit number of the second designated DCI of each service cell in at least two second service cells is not completely the same, configuring fields contained in the first DCI based on fields contained in the second designated DCI with the bit number equal to that of the first DCI;

if the bit number of the second specific DCI of each of the at least two second serving cells is the same, the field included in the first DCI is configured based on the field included in the second specific DCI of the serving cell satisfying the third preset condition among the at least two second serving cells.

Optionally, the first DCI includes a predetermined field, where the predetermined field is used to indicate a second serving cell scheduled by the first DCI;

wherein the predetermined field is a newly defined field or a newly defined field included in an existing DCI.

Optionally, the first DCI includes at least one of the following indication fields:

a BWP indication field;

a Minimum Applicable Scheduling Offset Indication (MASOI) field;

a Rate Matching Indication (RMI) field;

zero power channel state information reference signal driving ZCRT field;

an antenna port AP field;

a modulation coding mode, MCS, field;

a new data indication NDI field;

a redundancy version RV field.

Optionally, for any one of the BWP indication field, MASOI field, RMI field, zct field, AP field, MCS field, NDI field, or RV field, the number of fields is equal to the number of second serving cells, one field corresponding to one second serving cell.

Optionally, for any one of the BWP indication field or the MASOI field, if the number of the fields contained in the first DCI is less than the number of the second serving cells, the field satisfies at least one of the following:

at least one of the fields is used for indicating the indication information corresponding to the field of at least two cells in at least two second serving cells;

the field is not used for indication of indication information corresponding to the field of any second serving cell;

the field is used for indicating the indication information corresponding to the field of the first serving cell in the at least two second serving cells;

the field is used for an indication of a first designation message for at least one of the at least two second serving cells.

Optionally, for any one of the RMI field, the zct field, the AP field, the MCS field, the NDI field, or the RV field, if the number of the fields included in the first DCI is less than the number of the second serving cells, the field is used for information indication of each second serving cell, and at least one of the fields is used for jointly indicating information corresponding to the field of at least two second serving cells.

In a second aspect, an embodiment of the present application provides a method for receiving downlink data, where the method includes:

receiving DCI on a serving cell;

and receiving data transmitted by the PDSCH of the at least one serving cell scheduled by the DCI according to the DCI.

Optionally, receiving DCI on a first serving cell includes:

receiving DCI of a predetermined format on one serving cell, the DCI of the predetermined format being capable of being used for scheduling PDSCHs of at least two serving cells.

Optionally, when the DCI with the predetermined format includes PDSCH information of at least two serving cells, receiving data transmitted by a PDSCH of at least one serving cell scheduled by the DCI according to the DCI includes:

and receiving data transmitted by PDSCHs of at least two service cells scheduled by the DCI according to the DCI.

Optionally, the method further includes:

and transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK) information corresponding to the PDSCHs of the at least two serving cells.

Optionally, receiving, according to the DCI, data transmitted by the PDSCH of the at least one serving cell scheduled by the DCI includes:

determining that the DCI is used for scheduling PDSCHs of at least two serving cells according to the indication of a predetermined field in the DCI;

receiving data transmitted by PDSCHs of at least two serving cells scheduled by the DCI.

Optionally, the receiving data transmitted by the PDSCHs of the at least two serving cells scheduled by the DCI includes:

determining a serving cell indicated by each indication field of the DCI;

determining an indication of an indication field corresponding to each serving cell in the DCI;

and receiving data transmitted by the PDSCH of each serving cell according to the indication of the indication field corresponding to each serving cell in the DCI.

Optionally, the determining the serving cell indicated by each indication field of the DCI includes:

receiving indication information corresponding to each indication field of the DCI;

and determining the serving cell indicated by each indication field in the DCI according to the indication information.

Optionally, for any indication field in the DCI, when one of the indication fields is used to indicate at least two serving cells, determining an indication of the indication field corresponding to each serving cell in the DCI includes:

receiving a mapping relation of any indication field, wherein the mapping relation is a corresponding relation between a field indication value and indications of at least two serving cells;

and determining the indication of each cell in the at least two serving cells corresponding to any indication field according to the indication value of any indication field and the mapping relation.

In a third aspect, an embodiment of the present application provides a method for detecting a physical downlink control channel PDCCH, where the method includes:

determining detection information for scheduling a PDCCH candidate of a first serving cell, wherein the detection information comprises first detection information for PDCCH detection in the first serving cell and second detection information for PDCCH detection in a second serving cell;

and performing PDCCH detection on the first serving cell according to the first detection information, and performing PDCCH detection on the second serving cell according to the second detection information.

Optionally, the detection information includes the number of PDCCH candidates to be detected and/or the number of CCEs (non-overlapping control channel elements);

the PDCCH candidates are first PDCCH candidates used for scheduling a Physical Downlink Shared Channel (PDSCH) of a first serving cell or second PDCCH candidates used for scheduling a Physical Uplink Shared Channel (PUSCH) of the first serving cell;

the PDCCH candidates comprise PDCCH candidates corresponding to the common search space CSS and/or PDCCH candidates corresponding to the user equipment specific search space USS.

Optionally, the first detection information includes detection information of PDCCH candidates corresponding to the CSS and/or detection information of PDCCH candidates corresponding to the USS; and/or the presence of a gas in the gas,

the second detection information includes detection information of PDCCH candidates corresponding to the CSS and/or detection information of PDCCH candidates corresponding to the USS.

Optionally, the detection information of the PDCCH candidate for scheduling the first serving cell is determined according to at least one of the following:

a first total number, which is the total number of PDCCH candidates used for scheduling the first serving cell and/or the total number of non-overlapping CCEs;

detection capability configuration information of a first serving cell;

detection capability configuration information of the second serving cell;

subcarrier space SCS configuration information of a first service cell;

SCS configuration information of the second serving cell.

Optionally, determining detection information of a PDCCH candidate for scheduling the first serving cell includes:

determining maximum detection capability information;

determining detection information for scheduling PDCCH candidates of the first serving cell based on a first total number and the maximum detection capability information, wherein the first total number comprises the total number of PDCCH candidates for scheduling the first serving cell and/or the total number of non-overlapping CCEs.

Optionally, determining the maximum detection capability information includes:

determining maximum detection capability information corresponding to the first serving cell and the second serving cell in response to the detection capability configuration information of the first serving cell and the second serving cell being the same as the SCS configuration information;

determining detection information for scheduling the PDCCH candidates of the first serving cell based on the first total number and the maximum detection capability information, comprising:

determining detection information corresponding to the first serving cell and the second serving cell based on the first total number and the maximum detection capability information;

and determining the first detection information and the second detection information according to the detection information corresponding to the first serving cell and the second serving cell.

Optionally, determining the first detection information and the second detection information according to the detection information corresponding to the first serving cell and the second serving cell includes:

acquiring detection priorities corresponding to a first serving cell and a second serving cell;

and determining the first detection information and the second detection information according to the detection information corresponding to the first serving cell and the second serving cell and the detection priority.

Optionally, the first total number includes a second total number corresponding to the first serving cell and a third total number corresponding to the second serving cell;

determining maximum detectability information, comprising:

determining first maximum detection capability information corresponding to a first serving cell and second maximum detection capability information corresponding to a second serving cell;

determining first detection information based on the second total number and the first maximum detection capability information;

and determining second detection information based on the third total number and the second maximum detection capability information.

Optionally, the number of the detected DCI sizes when performing PDCCH detection on the first serving cell and the second serving cell is less than or equal to a first value; and/or the presence of a gas in the gas,

the number of the detected DCI sizes is less than or equal to a second value when the PDCCH detection is performed on the first serving cell; and/or the presence of a gas in the gas,

the number of the detected DCI sizes when the PDCCH detection is performed on the second serving cell is less than or equal to a third value;

and/or the presence of a gas in the gas,

the number of the first DCI detected when the PDCCH detection is carried out on the first serving cell and the second serving cell is less than or equal to a fourth value; and/or the presence of a gas in the gas,

the number of the first DCI detected when the PDCCH detection is carried out on the first serving cell is less than or equal to a fifth value; and/or the presence of a gas in the gas,

and the number of the first DCI detected when the PDCCH detection is carried out on the second serving cell is less than or equal to a sixth value.

In a fourth aspect, an embodiment of the present application provides an apparatus for configuring downlink control information, where the apparatus includes at least one processor, and the at least one processor is configured to:

In a fifth aspect, an embodiment of the present application provides an apparatus for receiving downlink data, the apparatus including at least one processor configured to:

receiving DCI on a serving cell;

In a sixth aspect, an embodiment of the present application provides an apparatus for detecting a physical downlink control channel PDCCH, which includes at least one processor, where the at least one processor is configured to:

In a seventh aspect, an embodiment of the present application provides an electronic device, which includes a memory and a processor; wherein the memory has stored therein a computer program and the processor is configured to execute the method provided by the first, second or third aspect of the present application when running the computer program.

In an eighth aspect, the present application provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used for executing the method provided in the first, second or third aspect of the present application when executed by a processor.

The beneficial effects brought by the technical solutions provided by the embodiments of the present application will be described in detail in the following detailed description of specific embodiments, which will not be described herein.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.

Fig. 1 shows a schematic diagram of one PDCCH scheduling two PDSCHs in an example of the present application;

fig. 2 is a schematic flow chart illustrating a method for receiving downlink data according to an embodiment of the present application;

fig. 3 is a flowchart illustrating a method for detecting a physical downlink control channel according to an embodiment of the present application.

Fig. 4 is a diagram illustrating an example of scheduling one serving cell by a plurality of serving cells.

Fig. 5 is a schematic structural diagram of an electronic device to which the embodiment of the present application is applied.

Detailed Description

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

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. As used herein, "user equipment", "terminal equipment" includes both devices that are wireless signal receivers, devices that have only wireless signal receivers without transmit capability, and devices that have receive and transmit hardware, devices that have receive and transmit hardware capable of two-way communication over a two-way communication link. Such a device may include: a cellular or other communication device having a single line display or a multi-line display or a cellular or other communication device without a multi-line display; PCS (Personal Communications Service), which may combine voice, data processing, facsimile and/or data communication capabilities; a PDA (Personal Digital Assistant), which may include a radio frequency receiver, a pager, internet/intranet access, a web browser, a notepad, a calendar and/or a GPS (Global Positioning System) receiver; a conventional laptop and/or palmtop computer or other device having and/or including a radio frequency receiver. As used herein, a "terminal," "terminal device," "user device" may be portable, transportable, installed in a vehicle (aeronautical, maritime, and/or land-based), or situated and/or configured to operate locally and/or in a distributed fashion at any other location(s) on earth and/or in space. As used herein, the "terminal", "terminal Device", "user Device" may also be a communication terminal, a web terminal, a music/video playing terminal, such as a PDA, an MID (Mobile Internet Device) and/or a Mobile phone with music/video playing function, and may also be a smart tv, a set-top box, and the like.

For a UE configured with multiple serving cells, the UE may receive PDCCH and PDSCH in multiple serving cells, and the subcarrier spatial configurations of multiple serving cells may be the same or different. In order to better save resources occupied by the PDCCH, in the scheme provided in the embodiment of the present application, one PDCCH (i.e., DCI carried in the PDCCH) may schedule the PDSCH of one serving cell, or may schedule multiple PDSCHs of multiple (including two) different serving cells. Based on the scheme provided by the embodiment of the application, resources occupied by the PDCCH can be more reasonably and effectively saved, and the performance of the PDSCH scheduled by the PDCCH is slightly influenced.

As an example, as shown in fig. 1, serving cells 1 and 2 are two serving cells of one UE, a larger rectangular region in the drawing indicates a cell resource of the serving cell, and regions corresponding to a PDCCH and a PDSCH in the drawing are cell resources occupied by the PDCCH and the PDSCH, respectively, as shown in the drawing, when a base station issues DCI to the UE, the DCI may be carried on one PDCCH of the serving cell 2, and the DCI may schedule the PDSCH of the serving cells 1 and 2. That is, one DCI may correspond to two scheduled cells.

For convenience of description, in the embodiment of the present application, a serving cell in which a PDCCH carrying DCI is located (i.e., a serving cell transmitting DCI) is referred to as a scheduling serving cell, such as serving cell 2 in fig. 1, and a serving cell in which a scheduled PDSCH is located is referred to as a scheduled serving cell, such as serving cells 1 and 2 in fig. 1.

It is understood that the scheduled serving cell and the scheduling serving cell may be located in the same serving cell or may be located in different serving cells. When one DCI can schedule PDSCH of one or more serving cells, the scheduled serving cell may or may not include a scheduling serving cell.

In order to make the objects, technical solutions and advantages of the present application clearer, various alternative embodiments of the present application and how the technical solutions of the embodiments of the present application solve the above technical problems will be described in detail below with reference to specific embodiments and drawings. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

In order to achieve the purpose that one PDCCH can schedule PDSCH of one or more serving cells, a new DCI format is defined in the scheme provided in the embodiments of the present application, and in particular, a DCI configuration method is provided in the embodiments of the present application, in which DCI in one format is defined to be distinguished from existing DCI in various formats, in the embodiments of the present application, the newly defined DCI is referred to as a first DCI, which may also be referred to as a specific DCI, and the first DCI or the specific DCI can be used to schedule PDSCH of at least one serving cell on one serving cell, that is, the DCI can schedule PDSCH of at least two serving cells.

It should be noted that, in practical applications, the name of the first DCI or the specific DCI is not limited in the embodiments of the present application, and the "first" or "specific" is only for distinguishing from the DCI in the existing format, and the specific DCI will be referred to as DCI _ x in the following description. In addition, for convenience of description, a cell transmitting the PDCCH (i.e., a serving cell in which the PDCCH carrying the specific DCI is located) is referred to as a first serving cell, and a serving cell scheduled by the specific DCI is referred to as a second serving cell, where the second serving cell may or may not include the first serving cell.

This specific DCI will be described in detail below.

In an optional embodiment of the present application, the first serving cell or the second serving cell includes a bandwidth part (BWP) of the serving cell.

That is to say, the serving cell in the embodiment of the present application may be a serving cell in the general sense, that is, a cell, or a BWP of the serving cell, that is, the specific DCI may also be a DCI for scheduling a PDSCH of at least one BWP, and the UE may receive the PDSCH on at least one BWP according to the DCI information in one PDCCH. For example, the specific DCI may be used to schedule PDSCH on two BWPs of two serving cells; for another example, it is assumed that one serving cell may correspond to a plurality of active BWPs, and the PDSCH of the at least one second serving cell may also refer to one or more active BWPs of one serving cell.

For the convenience of description, the following description is given by taking one PDCCH (i.e. DCI carried in PDCCH) to schedule PDSCH on at least one serving cell as an example, and of course, the following description is also applicable to the case where one PDCCH schedules PDSCH on at least one BWP.

In an optional embodiment of the present application, the number of bits of the specific DCI satisfies at least one of:

A. the number of bits of the specific DCI is equal to the specified number of bits;

B. the number of bits of the specific DCI is equal to the number of bits of the existing first designated DCI of the first serving cell;

C. the bit number of the specific DCI is equal to the bit number of a second designated DCI existing in any one of at least one second serving cell;

D. when the specific DCI is used for scheduling PDSCHs of at least two second serving cells, the bit number of the specific DCI is equal to the bit number of a third designated DCI meeting a first preset condition in existing third designated DCIs of each serving cell of the at least two second serving cells;

E. when the specific DCI is used for scheduling PDSCHs of at least two second serving cells, the bit number of the specific DCI is equal to the bit number of an existing fourth designated DCI of a serving cell meeting a second preset condition in the at least two second serving cells;

F. the number of bits of a particular DCI is not equal to the number of bits of any existing DCI.

It should be noted that, the specific DCIs (the first specific DCI, the second specific DCI, and the like) are existing DCIs, and what kind of DCI the specific DCI is not limited in this embodiment, and may be pre-agreed by the base station and the UE, that is, a protocol is agreed, for example, the specific DCI may be any existing DCI with one format, for example, the specific DCI may be DCI with a format 1-1, or DCI with a format 1-0. In the above-described alternatives, the designated DCIs may be DCIs of the same format or may be DCIs of different formats.

The following describes each of the above items a to F.

For the above a, the bit number of the specific DCI is equal to the specified bit number, where the specified bit number is a bit number predetermined by the protocol, or a value predetermined by the base station for the UE. That is, the number of bits included in the specific DCI may be a fixed value, which is predetermined by the base station and the UE or configured by the base station for the UE in advance. The fixed value may be the same as or different from the number of bits of the DCI of any one of the existing formats.

For example, the number of bits of DCI _ x may be the same as that of an existing DCI format, e.g., the number of bits of DCI _ x is the same as that of DCI format 1_1, and by using this method, the PDSCHs of two serving cells may be scheduled through one PDCCH without increasing or decreasing the number of PDCCH blind detections, so that resource overhead occupied by the PDCCH is saved. Or, DCI _ x is a new DCI format, the bit number of DCI _ x may be different from the bit number of an existing DCI format, and when this scheme is used, because DCI _ x is a dedicated DCI for scheduling PDSCHs of one or more serving cells, a bit number corresponding to the number of PDSCHs scheduled by DCI _ x may be configured for DCI _ x, that is, the bit number included in DCI _ x may be configured correspondingly based on the number of PDSCHs of the serving cell actually scheduled by DCI _ x, for example, DCI _ x schedules PDSCHs of two serving cells, the bit number of DCI _ x may be a relatively large value, and DCI _ x may include field contents respectively used for indicating the scheduled PDSCHs, so that performance of one or more PDSCHs scheduled by DCI _ x may be increased.

For the above B, the bit number of the specific DCI may be equal to the bit number of the existing first specific DCI of the first serving cell, that is, the bit number of the DCI _ x may be DCI of one specific format of the serving cell in which the PDCCH carrying the DCI is located, and as in the example shown in fig. 1, the bit number of the DCI _ x may be equal to the bit number of the DCI format 1_1 of the serving cell 2.

For the above C, the bit number of the specific DCI is equal to the bit number of the second specific DCI existing in any one of the at least one second serving cell, for example, DCI _ x is used to schedule PDSCH of serving cell a and serving cell B, and the second specific DCI is DCI format 1_1, the bit number of the DCI _ x may be the bit number of DCI format 1_1 of serving cell a or the bit number of DCI format 1_1 of serving cell B. For this way, in practical application, the UE may determine, according to a higher layer signaling configuration, or protocol preset, or implicit signaling, which bit number of the DCI format 1_1 of the serving cell is specifically the bit number of the DCI _ x.

For the above D, in this embodiment, DCI _ x may be used to schedule PDSCH of at least two second serving cells, the bit number of DCI _ x corresponds to the bit number of the third specific DCI, and specifically, the bit number of the third specific DCI which is used for which scheduled serving cell is determined according to the first preset condition. Optionally, the first preset condition may include, but is not limited to, at least one of a maximum number of bits or a minimum number of bits. For example, assuming that the first preset condition is that the bit number is the maximum, DCI _ x is used to schedule PDSCH of serving cell a and serving cell B, and the third designated DCI is DCI format 1_1, and bit number a of DCI format 1_1 of serving cell a is greater than bit number B of DCI format 1_1 of serving cell B, then the bit number of DCI _ x is a.

For the above E, in this embodiment, DCI _ x may be used to schedule PDSCH of at least two second serving cells, the bit number of DCI _ x corresponds to the bit number of the fourth specific DCI, and specifically, the bit number of the third specific DCI which is used for which scheduled serving cell is determined according to the second preset condition. Optionally, the second preset condition may include at least one of:

the serving cell index is minimum; the serving cell index is maximum; the number of Transport Blocks (TBs) supported by a serving cell is the largest; the number of TBs supported by the serving cell is minimal.

For example, assuming that the second preset condition is that the serving cell index is maximum, DCI _ x is used to schedule PDSCH of serving cell a and serving cell B, and the fourth specified DCI is DCI format 1_1, and the cell index IndexA of serving cell a is smaller than the cell index IndexB of serving cell B, the bit number of DCI _ x is the bit number of DCI format 1_1 of serving cell B.

For the above F, the number of bits of the specific DCI is not equal to the number of bits of any existing DCI, for example, since the specific DCI can schedule the PDSCH of one or more serving cells, the number of bits of the specific DCI may be larger than the number of bits of any DCI of the existing formats in order to ensure the performance of the scheduled multiple PDSCHs, and of course, other manners are also possible. With this scheme, the number of bits of the specific DCI may be a fixed value or may be a variable value, and the UE may determine the number of bits of the specific DCI by receiving a corresponding indication from the base station.

Optionally, when the specific DCI is used to schedule the PDSCH of the at least two second serving cells, and the bit number of the specific DCI is equal to the bit number of a second designated DCI existing in any serving cell of the at least one second serving cell, that is, when the number of scheduled serving cells in the above item C is two or more, the configuration method may further include:

if the bit number of the second designated DCI of each service cell in the at least two second service cells is not completely the same, configuring a field of the specific DCI based on the field of the second designated DCI, wherein the field of the second designated DCI is equal to the bit number of the specific DCI;

if the bit number of the second specific DCI of each of the at least two second serving cells is the same, the field of the specific DCI is configured based on the field of the second specific DCI of the serving cell satisfying the third preset condition among the at least two second serving cells.

That is, each field in the specific DCI may be configured according to a field of an existing second specific DCI of any one of the serving cells scheduled by the specific DCI, or alternatively, may be configured according to a field of a second specific DCI having the same number of bits as the specific DCI, and if DCI _ x of serving cell a may schedule PDSCH of serving cell a and serving cell B, the number of bits of DCI format 1_1 of scheduling serving cell a is a, the number of bits of DCI format 1_1 of scheduling serving cell B is B, and the number of bits of DCI _ x is a, the field configuration of DCI _ x may be performed according to format 1_1 of serving cell a. In addition, if the number of bits of the second specific DCI for each scheduled serving cell is the same, the field configuration of DCI _ x may be determined according to which second specific DCI for each scheduled serving cell is based on the third preset condition. The third preset condition may be configured according to actual requirements, and may be the same as or different from the second preset condition in the foregoing.

In practical application, the base station may indicate, through higher layer signaling or implicit signaling, that the DCI _ x field of the UE is configured according to the second specific DCI of which serving cell, or the base station and the UE may agree in advance in a manner that the UE may determine, according to the agreement, that the DCI _ x field is configured according to the second specific DCI of which serving cell.

In order to better understand the specific DCI supported in the scheme of the embodiment of the present application, the following describes, in combination with several optional examples in example 1 below, an optional configuration manner of the bit number of the DCI in more detail. In each example below, the example of DCI _ x scheduling PDSCH of two serving cells is described, and in each example, the existing specific DCI (corresponding to the first specific DCI, the second specific DCI, the third specific DCI, the fourth specific DCI, or the like in the foregoing description) will be described by using DCI format 1_1 as an example. When the PDCCH of one serving cell schedules two serving cells, the number of bits of DCI format 1_1 for which serving cell is scheduled is selected as the number of bits of DCI _ x, and the alternatives in any of the following examples may be adopted.

Example 1: optional configuration of bit number for DCI

Example 1.1

The bit number of DCI format 1_1 with the larger bit number of DCI format 1_1 of the scheduled serving cell is selected as the bit number of DCI _ x, for example, DCI of serving cell a may schedule serving cell a and serving cell B, the bit number of DCI format 1_1 of scheduling serving cell a is a, the bit number of DCI format 1_1 of scheduling serving cell B is B, when a is greater than or equal to B, the bit number of DCI _ x is equal to a, and when a is smaller than B, the bit number of DCI _ x is equal to B.

Example 1.2

The bit number of the DCI format 1_1 of the serving cell where the PDCCH is located is selected as the bit number of the DCI _ x, for example, the DCI of the serving cell a may schedule the serving cell a and the serving cell B, the bit number of the DCI format 1_1 of the serving cell a is scheduled to be a, the bit number of the DCI format 1_1 of the serving cell B is scheduled to be B, the serving cell where the PDCCH is located is the serving cell a, and the bit number of the DCI _ x is equal to a.

Example 1.3

The bit number of DCI format 1_1 of the scheduled serving cell may be the bit number of DCI _ x, and the base station may select to use the bit number of DCI format 1_1 of any scheduled serving cell as the bit number of DCI _ x.

For example, the DCI of the serving cell a may schedule the serving cell a and the serving cell B, the bit number of the DCI format 1_1 for scheduling the serving cell a is a, the bit number of the DCI format 1_1 for scheduling the serving cell B is B, and the base station may select the bit number of the DCI _ x to be equal to a or the bit number of the DCI _ x to be equal to B. In practical application, because the UE always performs blind detection on the DCI format 1_1 of the serving cell a and the DCI format 1_1 of the serving cell B, that is, the UE performs blind detection on both the DCI with the bit number equal to a and the DCI with the bit number equal to B, by using this method, the scheduling flexibility of the base station is increased without increasing the number of times of PDCCH blind detection, so that the PDSCH performance of the serving cell is ensured.

Example 1.4

The bit number of DCI format 1_1 of which serving cell can be determined as the bit number of DCI _ x according to higher layer signaling configuration, or protocol preset, or implicit signaling.

For example, the DCI of the serving cell a may schedule the serving cell a and the serving cell B, where the bit number of DCI format 1_1 for scheduling the serving cell a is a, the bit number of DCI format 1_1 for scheduling the serving cell B is B, and the UE may determine that the bit number of DCI _ x is equal to a according to implicit signaling, for example, the serving cell a supports PDSCHs of two TBs, the serving cell B supports a PDSCH of one TB, the base station selects the bit number of DCI format 1_1 of the serving cell supporting a PDSCH of 2 TBs as the bit number of DCI _ x, and may transmit corresponding indication information to the UE, and if the transmission is performed through the implicit signaling, the UE may determine, based on the implicit signaling, to use the bit number of DCI format 1_1 of the serving cell a as the bit number of DCI _ x.

In this example, the performance of one aspect of the scheduled PDSCH can be improved without increasing the number of PDCCH blind detections, for example, the number of bits of DCI format 1_1 of the serving cell supporting PDSCH of 2 TBs is selected as the number of bits of DCI _ x, and at this time, two sets of MCS, NDI, and RV fields may be used for the indication of two serving cells, respectively, so that the performance of PDSCH of two serving cells can be improved. For another example, the bit number of DCI format 1_1 of the serving cell with a small cell index (cell index) in the scheduled serving cell is also selected as the bit number of DCI _ x by protocol presetting.

Or, as another alternative, the adopted mode may be determined according to protocol preset, or higher layer signaling configuration, or implicit signaling, according to different practical application situations. For example, when the DCI of the serving cell a can schedule the serving cell a and the serving cell B, the bit number of the DCI format 1_1 for scheduling the serving cell a is a, the bit number of the DCI format 1_1 for scheduling the serving cell B is B, when a is not equal to B, the bit number of DCI _ x may be equal to a or B, optionally, when the bit number of DCI _ x is equal to a, fields in DCI _ x may be configured according to fields of DCI format 1_1 when only the serving cell a is scheduled, for example, the bit number of an antenna port field, MCS (modulation coding mode), NDI (new data indicator, new data indication), RV (redundancy version) field, FDRA (frequency domain resource allocation) and other fields may be configured according to the field of DCI format 1_1 when the serving cell a, that is to say, when the DCI _ x is equal to the bit number of DCI _ a, the fields included in the DCI _ x may be configured with reference to the fields of the DCI format 1_1 in the serving cell a, and the specific content included in the DCI _ x may be some adjustment based on the DCI format 1_1 in the serving cell a, and the DCI for scheduling the PDSCH of one serving cell is adjusted to the DCI capable of scheduling the PDSCH of one or more serving cells. When the number of bits of DCI _ x is equal to B, the field in DCI _ x may be configured according to the field of DCI format 1_1 when scheduling serving cell B.

When a is equal to B, optionally, it may be determined through implicit signaling that the field of the DCI _ x is configured according to the field of the DCI format 1_1 when the serving cell a is scheduled, and further configured according to the field of the DCI format 1_1 when the serving cell B is scheduled, for example, the serving cell a supports a PDSCH of two TBs, the serving cell B supports one TB, and the base station selects the field content of the DCI format 1_1 supporting 2 TBs as a basis for determining the field content of the DCI _ x.

Or when a is equal to B and the search spaces of DCI format 1_1 of serving cell a and DCI format 1_1 of serving cell B are overlapped, determining, by implicit signaling, that a field of DCI _ x is configured according to a field of DCI format 1_1 when only serving cell a is scheduled, or according to a field of DCI format 1_1 when only serving cell B is scheduled, for example, serving cell a supports PDSCH of two TBs, serving cell B supports one TB, and selecting the field content of DCI format 1_1 supporting 2 TBs as the basis for determining the field content of DCI _ x.

Example 1.5

When DCI _ x is a new DCI format, the number of bits of DCI _ x is different from the number of bits of the existing DCI format. In this way, one additional PDCCH blind detection format may be added, so that the total number of PDCCH formats for UE blind detection may exceed the maximum PDCCH blind detection capability of the UE or the number of PDCCH times for UE blind detection may exceed the maximum PDCCH blind detection capability of the UE.

When the total number of formats of PDCCH for blind detection of UE does not exceed the maximum PDCCH blind detection capability of the UE, the UE respectively carries out blind detection on DCI _ x and other DCI formats, when the total number of formats of PDCCH for blind detection of the UE exceeds the maximum PDCCH blind detection capability of the UE, the UE can combine the blind detection of DCI _ x and the blind detection of other DCI formats, namely the number of bits of DCI _ x is enabled to be reduced through zero padding or truncation, so that the number of bits of DCI _ x after zero padding or truncation processing is the same as that of other DCI formats needing the blind detection, the complexity of the blind detection is reduced, and the number of the formats for blind detection is enabled not to exceed the maximum PDCCH blind detection capability of the UE, for example, the DCI format with the maximum number of bits in other DCI formats for blind detection of the UE is combined with DCI _ x, namely the number of bits of DCI _ x is enabled to be the same as that of DCI _ x with the maximum bits in other DCI formats through the zero padding, so that the number of DCI _ x is increased as little as possible extra bits, and scheduling performance is not affected.

It should be noted that, in practical applications, when the base station sends the DCI _ x provided in the embodiment of the present application to the UE, for different configuration manners of the DCI _ x bit number, when the UE receives the DCI _ x or receives data transmitted by the PDSCH according to the DCI _ x, the UE may determine different DCI _ x processing manners according to a protocol convention and/or an instruction of the base station.

Optionally, for example, when the bit number of DCI _ x is different from any existing bit number, the base station may send corresponding indication information to the UE, and the UE may determine the bit number of DCI _ x based on the indication information, so as to perform blind detection on DCI _ x. For another example, when the alternative in example 1 is adopted again, since the bit number of DCI _ x is the bit number of a specific DCI format, the UE can blindly detect DCI of the existing format of each serving cell, and thus, if the base station issues DCI _ x, the UE can also blindly detect DCI _ x, and then the UE can determine the bit number of DCI _ x by analyzing the DCI _ x according to the configuration of the DCI _ x that is adopted, for example, when the bit number of DCI format 1_1 with the larger bit number of DCI format 1_1 of the scheduled serving cell is selected as the bit number of DCI _ x in example 1.1, the UE can determine the bit number of DCI format 1_1 of the serving cell a and the bit number of DCI format 1_1 of the serving cell B after determining each serving cell that DCI _ x is specifically scheduled (the determination will be described later), if the serving cell a and the serving cell B are scheduled, and determining the larger bit number as the bit number of the DCI _ x, further analyzing the DCI _ x, and receiving the user data transmitted in the scheduled PDSCH according to the analysis result.

In addition, in practical applications, for one UE, there may be a plurality of serving cells, and as another alternative, the number of bits of DCI _ x may be agreed to be the number of bits of DCI of a certain existing format of a serving cell that satisfies a certain condition, regardless of the number of serving cells of the UE. For example, assuming that there are three serving cells of the UE, no matter whether DCI _ x schedules PDSCH of several serving cells, the bit number of DCI _ x is equal to the bit number of DCI format 1_1 of the serving cell with the smallest cell index in each serving cell, or is equal to the bit number of DCI format 1_1 of the serving cell with the largest cell index in the serving cell currently scheduled by DCI _ x.

In an optional embodiment of the present application, a predetermined field is included in the specific DCI, and the predetermined field is used to indicate a second serving cell scheduled by the specific DCI;

the predetermined field may be a newly defined field or a field included in newly defined DCI.

In the following description, for convenience of description, the predetermined field for indicating the serving cell scheduled by DCI _ x is referred to as a scheduled cell indication field, and it is understood that the name of the field is not limited in this embodiment of the present application.

Since DCI _ x may be used to schedule PDSCH of one or more serving cells, when the DCI _ x may correspond to one scheduled serving cell or a plurality of scheduled serving cells, a manner needs to be provided in which the UE can determine whether the DCI _ x schedules PDSCH of one or more serving cells and which serving cell is specifically scheduled. In this scheme of the embodiment of the present application, the UE may determine, according to the scheduled cell indication field in the DCI _ x, the relevant information of the serving cell scheduled by the DCI _ x.

When the scheduled cell indication field is a newly defined field, the name of the field is not limited in the embodiment of the present application, and when the scheduled cell indication field is an existing field in the existing DCI, which field is specifically reinterpreted is used to indicate the serving cell scheduled by the DCI _ x.

Of course, in practical applications, DCI _ x may also be configured as DCI dedicated to scheduling PDSCH of at least two serving cells, for example, existing DCI is used to schedule PDSCH of one serving cell, and DCI _ x is used to schedule PDSCH of two serving cells. That is, whether the DCI schedules one PDSCH or schedules two PDSCHs may be determined by different DCI formats.

The scheduling cell indication field is further described below with reference to an example.

Example 2

In this example, the DCI _ x may be a PDSCH for scheduling one serving cell, or may be a PDSCH for scheduling two serving cells.

Alternatively, a separate field (e.g., a newly defined field) in DCI _ x may be used, or an existing field in the existing DCI may be used, and the field may be reinterpreted to indicate whether DCI _ x schedules a PDSCH of one serving cell or a PDSCH of two serving cells, and which serving cell or PDSCH of two serving cells is scheduled.

For example, whether to schedule a PDSCH of one serving cell or to schedule a PDSCH of two serving cells, and which serving cell's PDSCH or which two serving cells' PDSCH is scheduled may be indicated by re-interpreting a Carrier Indicator (CI).

As an illustrative example, table 1 shows a mapping relationship between the value of the CI field and the scheduled serving cell (serving cell of PDSCH shown in table), in practical applications, the base station may indicate the mapping relationship to the UE, and when the UE receives DCI _ x, the UE may determine the number of serving cells scheduled by DCI _ x and specifically which serving cell or cells based on the value of the CI field in DCI _ x and the mapping relationship. By adopting the method, the function of scheduling indication can be completed under the condition of small protocol change.

TABLE 1

CI value	Serving cell of PDSCH
		000	Serving cell 0
001	Serving cell 1
		010	Serving cell 2
011	Serving cell 0 and serving cell 1
		100	Serving cell 0 and serving cell 2
101	Serving cell 1 and serving cell 2
		110	Retention
111	Retention

It should be noted that the mode shown in table 1 is only a schematic illustration. The "reserved" in the above table indicates that the values "110" and "111" of the CI field are not used in this example, but of course, in practical applications, the two values "110" and "111" may also be used to indicate other information.

Based on the scheme in this example, when the UE receives DCI _ x, it may determine, through the field in DCI _ x, whether the DCI schedules the PDSCH of one serving cell or schedules the PDSCH of two serving cells, and further determine which serving cell or cells are specifically scheduled.

In an optional embodiment of the present application, at least one of the following indication fields may be included in a specific DCI:

a BWP indication field;

a Minimum Applicable Scheduling Offset Indicator (MASOI) field;

a Rate Matching Indicator (RMI) field;

a Zero Power Channel State Information Reference Signal driver (ZCRT) field;

an AP field; an MCS field; an NDI field; and an RV field.

It is to be understood that, for DCI _ x, in addition to the above listed fields, other fields included in existing DCI for scheduling PDSCH may be included in DCI _ x, and the definitions or configurations of the other fields may refer to the definitions or configurations of the above fields.

The role of each field may refer to the existing specification, and is not expanded here, and the difference from the role of each field in the existing DCI is that the information indicated by each field in the existing DCI is for one serving cell, and the information indicated by each field in DCI _ x in the embodiment of the present application may be for one serving cell or multiple serving cells.

In practical applications, for any indication field contained in DCI _ x, the UE may determine whether the field is specifically used for indicating one serving cell or two serving cells by obtaining indication information from the base station, and when the field is used for indicating two or more serving cells, the UE may further obtain, from the base station, a correspondence between the field and each serving cell, and based on the indication value of the field and the correspondence, the UE may determine an indication that the field corresponds to each indicated serving cell. Optionally, the base station may send, through higher layer signaling or other means, corresponding indication information to the UE, and corresponding information that the UE needs to obtain from the base station when determining which serving cell is specifically indicated by each field in the DCI _ x.

In an alternative embodiment of the present application, for any one of the BWP indication field, MASOI field, RMI field, zct field, AP field, MCS field, NDI field, or RV field described above, the number of the fields is equal to the number of second serving cells, and one of the fields corresponds to one second serving cell.

In this alternative, the number of fields of each field of DCI _ x may correspond to the number of serving cells scheduled by the DCI _ x, so that one field of each field may correspond to one scheduled serving cell. For example, taking the MCS field as an example, DCI _ x is used to schedule PDSCH of serving cell 1 and serving cell 2, the number of MCS fields in DCI _ x is 2, the first MSC field corresponds to serving cell 1, i.e. to indicate MCS of serving cell 1, and the second MSC corresponds to serving cell 2.

Of course, the number of the above fields in the DCI _ x may be only one, and when the DCI _ x schedules the PDSCH of only one serving cell, the information indicated by each field is related to the one serving cell.

In an optional embodiment of the present application, for any one of the BWP indication field or the MASOI field, if the number of the fields contained in the specific DCI is less than the number of the second serving cells, the field satisfies at least one of the following:

a. an indication of indication information corresponding to the field in the at least one field for at least two of the at least two second serving cells;

b. the field is not used for indication of indication information corresponding to the field of any second serving cell;

c. the field is used for indicating the indication information corresponding to the field of a specific serving cell in at least two second serving cells;

d. this field is used for an indication of a specific message of at least one of the at least two second serving cells.

Specifically, taking the BWP indication field as an example, the BWP indication field is used to indicate the handover between BWPs of the serving cells, and assuming that only one BWP indication field is in DCI _ x and DCI _ x is used to schedule PDSCH of two serving cells, for the above item a, the one BWP indication field may be used to indicate the handover of BWP of the two scheduled serving cells at the same time. For example, when the indexes of the BWPs to which two scheduled serving cells are handed over are the same, it may be indicated simultaneously by the one BWP indication field. For another example, a mapping relationship between BWP indicator values and BWP indexes of two scheduled cells may be configured, and when a BWP indicator value is known to the UE, the UE may determine the BWP indexes to which the two scheduled serving cells are handed over based on the BWP indicator value and the mapping relationship.

Optionally, the specific serving cell may include at least one of:

a first serving cell, wherein the at least one second serving cell comprises the first serving cell;

serving cells corresponding to existing DCI for determining the bit number of the specific DCI;

and the serving cell meets a fourth preset condition.

The fourth preset condition may be configured as required, and for example, the preset condition may be the same as the second preset condition, or may be different from the second preset condition.

The following describes alternative configurations of the BWP switch field and MASOI field, respectively, in conjunction with two examples. It should be noted that the examples of the different fields may be referred to each other, i.e. the configuration principles may be referred to each other.

Example 3

Now describing the BWP indication method, there is a BWP indication field in DCI format 1_1 to indicate the handover between BWPs configured in one cell, and then when DCI in one PDCCH schedules PDSCH in two serving cells, there are several ways to indicate BWP handover as in the following examples.

Example 3.1

In this example, only one BWP indication field in DCI _ x is taken as an example for explanation.

When the DCI _ x schedules the PDSCH of only one serving cell, the BWP indication field indicates handover between BWPs of the scheduled serving cell.

Optionally, when the DCI _ x schedules the PDSCHs of two serving cells, the BWP indication field indicates handover between BWPs of a specific serving cell, and the activated downlink BWP of another serving cell is not changed, for example, the BWP indication field indicates handover between BWPs of a serving cell where the PDCCH is located, assuming that the PDCCH of the serving cell a can schedule the PDSCH of the serving cell a and the PDSCH of the serving cell B simultaneously, and the BWP indication field in the DCI in the PDCCH indicates change of BWP of the serving cell a.

Or, the PDCCH of the serving cell a may schedule the serving cell a and the serving cell B, where the bit number of the DCI format 1_1 for scheduling the serving cell a is a, the bit number of the DCI format 1_1 for scheduling the serving cell B is B, and the DCI _ x for scheduling the serving cell a and the serving cell B may adopt the bit number a, that is, the bit number of the DCI _ x is the same as the bit number of the DCI format 1_1 for scheduling the serving cell a, and of course, the DCI _ x may also adopt the bit number B, which is the same as the bit number of the DCI format 1_1 for scheduling the serving cell B. Alternatively, when the DCI _ x is the same as the bit number of the DCI format 1_1 of the scheduling serving cell a, the BWP indication field may indicate a handover between BWPs of the serving cell a; when the DCI _ x is the same as the number of bits of the DCI format 1_1 of the scheduling serving cell B, the BWP indication field may indicate a handover between BWPs of the serving cell B. In this way, the base station can indicate the BWP handover of any one of the two serving cells by selecting the bit number of DCI _ x without increasing the bit number of the BWP indication field.

Optionally, when the DCI _ x schedules the PDSCHs of two serving cells, the BWP indication field indicates a handover between BWPs of a specific serving cell determined by implicit signaling, and the activated downlink BWP of another serving cell is not changed, for example, the BWP indication field indicates a handover between BWPs of serving cells with small cell indexes (or large cell indexes).

Optionally, when the DCI _ x schedules the PDSCH of two serving cells, the BWP indication field indicates handover between the scheduled BWPs of the two serving cells, and the index of the BWP to which the two serving cells are handed over is the same.

Alternatively, when the DCI _ x schedules the PDSCH of two serving cells, the BWP indication field may jointly indicate a handover between the scheduled BWPs of the two serving cells. As an alternative, table 2.1 shows a mapping relationship between an indication value of the BWP indication field (the BWP indication value shown in the table) and a BWP index (a 0-a 3, b 0-b 3, etc. shown in the table) to which each scheduled serving cell (taking serving cell 1 and serving cell 2 as an example in table 2) is handed over.

TABLE 2.1

BWP indicator value	BWP of serving cell 1	BWP of serving cell 2
			00	BWP a0	BWP b0
01	BWP a1	BWP b1
			10	BWP a2	BWP b2
11	BWP a3	BWP b3

Specifically, the base station may indicate the mapping relationship to the UE, and when receiving the DCI _ x, the UE may determine an index of the BWP to which the serving cell 1 is handed over and an index of the BWP to which the serving cell 2 is handed over based on the indication value of the BWP indication field in the DCI _ x and the mapping relationship.

Optionally, when the DCI _ x schedules the PDSCH of two serving cells, the BWP indication field may be used as a reserved field, not to indicate a scheduled handover between BWPs of the two serving cells, and the BWP is activated by the two serving cells unchanged, or the BWP indication field may be used for indication of other information, for example, for antenna port indication, so that there may be more bits for indication of antenna ports, which may make the change of antenna ports more flexible and the performance of the scheduled PDSCH better.

Example 3.2

In this example, two BWP indication fields are in DCI _ x, and DCI _ x is used to schedule PDSCH of two serving cells.

Specifically, there may be two BWP indication fields in DCI _ x, each field indicating a scheduled BWP handover of a serving cell, that is, one BWP indication field corresponds to one scheduled cell, for example, the first BWP indication field indicates BWP handover of serving cell 1, and the second BWP indication field indicates BWP handover of serving cell 2. By adopting the method, the BWP can be switched very flexibly, and the PDSCH of the scheduled serving cell has better performance.

Example 3.3

When the DCI _ x schedules the PDSCH of two serving cells, the extended BWP indication field may jointly indicate a handover between the scheduled BWPs of the two serving cells, that is, there may still be only one BWP indication field, and the bit number of the BWP indication field is increased, for example, the bit number of the BWP indication field may be 3 bits, the indication of the BWP of the two served cells may be implemented with different indication values of the 3 bits, and by extending the bit number, the base station may more flexibly and more select to provide a better indication for the UE, thereby improving the scheduling performance of the PDSCH. As an alternative, table 2.2 shows a mapping relationship between an indication value of the BWP indication field (the BWP indication value shown in the table) and a BWP index to which each scheduled serving cell (for example, serving cell 1 and serving cell 2 in table 2.2) is handed over, and as shown in the table, 8 different joint indication information can be corresponded by the BWP indication field with a size of 3 bits, and the scheduling performance can be significantly improved compared with the indication field with 2 bits.

TABLE 2.2

Example 4

The following examples are used to describe how MASOI is indicated, and currently there is a MASOI indication field in DCI format 1_1, which is used to indicate a MASOI that activates BWP in one cell, so when DCI in one PDCCH can schedule PDSCH in one or more serving cells, there are several alternatives as in the following examples. In the following examples, DCI _ x is used to schedule a PDSCH of one serving cell or schedule a PDSCH of two serving cells.

Example 4.1

The alternatives in this example take the example of only one MASOI indication field in DCI _ x (i.e. the MASOI field in the foregoing).

Alternatively, when the DCI _ x schedules the PDSCH of only one serving cell, the MASOI indication field indicates a MASOI of an active BWP of the scheduled serving cell.

Optionally, when the DCI _ x schedules the PDSCH of two serving cells, the MASOI indication field may be used to indicate the MASOI of a specific serving cell that activates the BWP, and the MASOI of another serving cell that activates the downlink BWP is not changed. For example, the MASOI indication field may indicate MASOI of active BWP of the serving cell where the PDCCH is located, and assuming that the PDCCH of the serving cell a simultaneously schedules PDSCH of the serving cell a and PDSCH of the serving cell B, the MASOI indication field in DCI _ x in the PDCCH indicates MASOI of active BWP of the serving cell a, in this way, MASOI of active BWP of one serving cell can be simultaneously indicated without increasing the number of bits of the MASOI indication field.

Or, the PDCCH of the serving cell a may schedule the PDSCHs of the serving cell a and the serving cell B, the bit number of the DCI format 1_1 for scheduling the serving cell a is a, the bit number of the DCI format 1_1 for scheduling the serving cell B is B, and the DCI _ x for scheduling the serving cell a and the serving cell B at the same time may adopt the bit number a, which is the same as the bit number of the DCI format 1_1 for scheduling the serving cell a, or the bit number B, which is the same as the bit number of the DCI format 1_1 for scheduling the serving cell B. Wherein, when the bit number of the DCI _ x is the same as the bit number of the DCI format 1_1 of the scheduling serving cell A, the MASOI indication field indicates the MASOI of the active BWP of the serving cell A; the MASOI indication field indicates a MASOI of active BWP of the serving cell B when the DCI _ x is the same as the number of bits of the DCI format 1_1 scheduling the serving cell B. In this way, the base station can indicate MASOI of any one of the two serving cells for activating BWP by selecting the bit number of DCI _ x without increasing the bit number of the MASOI indication field. Accordingly, the UE may determine, according to the number of bits of DCI _ x, which MASOI indication field indicates which serving cell's MASOI for activating BWP.

Optionally, when the DCI _ x schedules the PDSCH of two serving cells, the MASOI indication field may indicate a MASOI of an active BWP of a specific serving cell, and the MASOI of an active downlink BWP of another serving cell is not changed, for example, the MASOI indication field indicates a MASOI of an active BWP of a serving cell with a small cell index.

Alternatively, when DCI _ x schedules PDSCH of two serving cells, the MASOI indication field may jointly indicate MASOI of BWP activated by the scheduled two serving cells. As an alternative, a mapping relationship between the indication value of the MASOI indication field (MASOI indication value in the table) and the MASOI of each scheduled serving cell (serving cell 1 and serving cell 2 shown in the table) for activating BWP is shown in table 3. In the indicating application, the base station may indicate the mapping relationship to the UE, and the base station informs the UE of the mapping relationship in a specific manner, which is not limited in the embodiment of the present application, after receiving the DCI _ x, the UE may determine an index of each scheduled serving cell MASOI based on an indication value of a MASOI indication field in the DCI _ x and the mapping relationship, for example, when the MASOI indication value is 00, an index of a MASOI of a serving cell 1 is c0, and an index of a MASOI of a serving cell 2 is d 0.

TABLE 3

MASOI indicated value	MASOI for serving cell 1	MASOI for serving cell 2
			00	MASOIc0	MASOI d0
01	MASOIc1	MASOI d1
			10	MASOIc2	MASOI d2
11	MASOIc3	MASOI d3

Alternatively, when the DCI _ x schedules the PDSCH of two serving cells, the MASOI indication field is used as a reserved field, i.e., the field may not indicate the MASOI of the scheduled two serving cells activating BWP, the MASOI of the two serving cells activating BWP is not changed, or the MASOI indication field may be used for other information indication, e.g., for antenna port indication, which may make the change of antenna port more flexible and the performance of PDSCH better.

Example 4.2

There are two MASOI indication fields in DCI _ x, DCI _ x is used to schedule PDSCH of two serving cells, each field indicating a MASOI of scheduled one serving cell activating BWP, and one MASOI indication field corresponds to one scheduled serving cell. By adopting the method, the change of the MASOI is very flexible, and the performance of the PDSCH is better.

Example 4.3

The principle of this example is the same as in example 3.3 above, and the indication of MASOI for active BWP of multiple serving cells by one MASOI indication field can be achieved by increasing the number of bits of the MASOI indication field. Since the principle is the same as in the foregoing example 3.3, the description is not repeated here, that is, in example 3.3, the BWP handover of multiple serving cells is jointly indicated by one extended BWP indication field, and the MASOI indication field may be applied, and the MASOI of active BWPs of multiple serving cells is jointly indicated by one extended MASOI indication field.

In an optional embodiment of the present application, for any one of the RMI field, the zct field, the AP field, the MCS field, the NDI field, or the RV field, if the number of the fields included in the specific DCI is less than the number of the second serving cells, the field is used for information indication of each second serving cell, and at least one of the fields is used for jointly indicating information corresponding to the field of at least two second serving cells.

That is, corresponding to a field, if the number of the fields is less than the number of the serving cells scheduled by the DCI _ x, at least one of the fields needs to jointly indicate information corresponding to at least two serving cells, so as to ensure that each scheduled serving cell can be indicated. For example, taking the RMI field as an example, there is only one RMI field in DCI _ x, and DCI _ x schedules PDSCH of two serving cells, the RMI field may be used to jointly indicate RMI of the two serving cells.

The RMI field, the zct field, the AP field, the MCS field, the NDI field, and the RV field are further described below in connection with some examples, respectively. In the following examples, DCI _ x is used to schedule a PDSCH of one serving cell or to schedule a PDSCH of two serving cells.

Example 5

In the following, the indication manner of RMI is described, and there is now an RMI indication field (i.e. the RMI field mentioned above) in DCI format 1_1 to indicate RMI for activating BWP in one cell, so when DCI in one PDCCH can schedule PDSCH in two serving cells, there are several alternatives as in the following examples.

Example 5.1

In this example, only one RMI indication field in DCI _ x is taken as an example for explanation.

Optionally, when the DCI _ x schedules the PDSCH of only one serving cell, the RMI indication field indicates RMI of the scheduled serving cell activated BWP. As an alternative, table 5 shows a mapping relationship between the indication value of the RMI indication field (the RMI indication value shown in the table) and the value of the RMI indication field corresponding to each indication value (e 0 to e3 shown in the table), the PDSCH of only one serving cell is scheduled in DCI _ x, and the UE can obtain the value of the RMI indication field for the scheduled serving cell to activate BWP according to the indication value of the RMI indication field in DCI _ x and the mapping relationship.

TABLE 5

RMI indicator value	RMI of serving cell
		00	RMI e0
01	RMI e1
		10	RMI e2
11	RMIe3

Alternatively, when the DCI _ x schedules the PDSCH of two serving cells, the RMI indication field may jointly indicate RMI of BWP activation by the scheduled two serving cells. As an alternative, table 6 shows a mapping relationship between the indication value of the RMI indication field (the RMI indication value shown in the table) and the value of the RMI indication field for activating BWP of each serving cell, where the mapping relationship may be obtained by the UE through higher layer signaling configuration of the base station or other configuration, and the RMI status may include no rate matching, that is, the RMI indication field indicates that the serving cell does not perform rate matching, that is, the RMI indication field indicates that a rate matching pattern may be used, or may not perform rate matching. In this way, the rate matching of the two serving cells can be indicated without increasing the number of bits of the RMI indication field.

TABLE 6

RMI indicator value	RMI for serving cell 1	RMI for serving cell 2
			00	RMI f0	RMI g0
01	RMI f1	RMI g1
			10	RMI f2	RMI g2
11	RMI f3	RMI g3

In practical application, the RMI indicator value when the DCI _ x schedules the PDSCH of one serving cell may be the same as or different from the RMI indicator value when the DCI _ x schedules the PDSCH of two serving cells. Optionally, in order to save resources, the RMI indicator value when the DCI _ x schedules the PDSCH of one serving cell and the DCI _ x schedules the PDSCH of two serving cells may use the same optional value, such as 00, 01, 10, and 11 shown in tables 5 and 6, but for different numbers of scheduled cells, the RMI indicated by the same RMI indicator value may be configured independently, that is, although the RMI indicator value may use the same optional value, the RMI indicated by the same RMI indicator value is different when the DCI _ x schedules the PDSCH of one serving cell and the DCI _ x schedules the PDSCH of two serving cells, one indicates one serving cell, and the other indicates two serving cells jointly. In this way, when the UE first determines whether DCI _ x is used for scheduling PDSCH of one serving cell or PDSCH of two serving cells, and when the scheduled serving cell is one, the UE may determine RMI of the scheduled serving cell according to the RMI indication value and the mapping relationship (as shown in table 5) corresponding to one scheduled serving cell, and if there are two scheduled serving cells, the UE may determine RMI of each scheduled serving cell according to the RMI indication value and the mapping relationship (as shown in table 6) corresponding to the two scheduled serving cells. With this option, it can be guaranteed that the indication of RMI is the most accurate when scheduling one serving cell, and when scheduling two serving cells, the indication of RMI is the result of a combined optimization of scheduling PDSCH and RMI indication.

Example 5.2

When DCI _ x is used for scheduling PDSCH of two serving cells, each field indicates RMI of one scheduled serving cell for activating BWP, i.e. each RMI indication field may correspond to one scheduled serving cell respectively. In this way, the variation of RMI can be made very flexible.

Optionally, when only one RMI indication field is in the DCI _ x, and the DCI _ x is used to schedule the PDSCH of two serving cells, the RMI indication field may also indicate the RMI of one serving cell activating BWP, and the RMI of the other serving cell activating BWP may be indicated by reusing another field, for example, by reusing the BWP indication field or MASOI field.

Example 5.3

The principle of this example is the same as that in example 3.3 or example 4.4 in the foregoing, i.e. the RMI of the active BWPs of multiple serving cells may be jointly indicated by one extended RMI indication field. Specific alternative embodiments can refer to the description in example 3.3 above and will not be expanded here.

Example 6

The following describes the way of indicating the ZCRT, and there is currently a ZCRT indication field in DCI format 1_1 to indicate the ZCRT activating BWP in one cell, so when DCI in one PDCCH schedules PDSCH in two serving cells, the ZCRT is indicated to have the following several examples of alternatives.

Example 6.1

In this example, only one ZCRT indication field in DCI _ x is taken as an example for explanation.

Optionally, when DCI _ x schedules only a PDSCH of one serving cell, the zct indicator field is used to indicate a zct of a scheduled serving cell for activating BWP, as an optional manner, table 7 shows a mapping relationship between an indicator value of the zct indicator field (the zct indicator value in the table) and a zct of a scheduled serving cell for activating BWP (taking serving cell 1 as an example in the table), and when receiving DCI _ x, the UE may determine the zct of the scheduled serving cell based on the indicator value of the zct indicator field in DCI _ x and the mapping relationship.

TABLE 7

ZCRT indicator	ZCRT of service cell 1
		00	ZCRT h0
01	ZCRT h1
		10	ZCRT h2
11	ZCRT h3

Alternatively, when the DCI _ x schedules PDSCHs of two serving cells, the ZCRT indication field may jointly indicate the scheduled two serving cells to activate the ZCRT of BWP. As an alternative, table 8 shows a mapping relationship between the ZCRT indication value and the ZCRTs of two scheduled serving cells (serving cell 1 and serving cell 2 are taken as examples in the table) for activating BWP. The zct state UE indicated by each indication value may be obtained through higher layer signaling configuration of the base station or other methods, and the zct state may include that no ZPCSI-RS exists, that is, the zct is used to indicate that no ZPCSI-RS resource exists in the PDSCH that activates BWP scheduling in the cell. In this way, the zero power channel state information reference signal drive of two serving cells can be indicated without increasing the number of bits of the ZCRT indication field.

TABLE 8

ZCRT indicator	ZCRT of service cell 1	ZCRT of serving cell 2
			00	ZCRTm0	ZCRT n0
01	ZCRTm1	ZCRT n1
			10	ZCRT m2	ZCRT n2
11	ZCRT m3	ZCRT n3

The same as the indication principle of the RMI indication field, when DCI _ x schedules the PDSCH of one serving cell and DCI _ x schedules the PDSCH of two serving cells, the optional values of the ZCRT indicator value may be the same or different, and if the optional values are the same, the ZCRT indicated by the same ZCRT indicator value may be configured independently. This ensures that the ZCRT indication is most accurate when scheduling one serving cell, and the ZCRT indication is the result of a combined optimization of the scheduled PDSCH and the ZCRT indication when scheduling two serving cells.

Example 6.2

When there are two ZCRT indication fields in DCI _ x, and DCI _ x schedules PDSCH of two serving cells, each field ZCRT indication field indicates one scheduled serving cell to activate ZCRT of BWP, i.e. one ZCRT indication field for each scheduled serving cell. The method can make the change of the ZCRT very flexible.

Optionally, when only one zcr t field is in DCI _ x, and DCI _ x schedules PDSCH of two serving cells, the zcr t field in DCI _ x may indicate a zcr t of an active BWP of one scheduled serving cell, and a zcr t of an active BWP of another scheduled serving cell may be indicated by other fields, such as may be implemented by reusing other fields, for example, by reusing a BWP indication field or a MASOI field to indicate a zcr t of an active BWP of another scheduled serving cell.

Example 6.3

The principle of this example is the same as in example 3.3 above, i.e. the ZCRTs of the active BWPs of multiple serving cells can be jointly indicated by one extended ZCRT indication field. Specific alternative embodiments can refer to the description in example 3.3 above, which is not further expanded here.

Example 7

Now describing the indication manner of the antenna port AP, there is currently an AP indication field in DCI format 1_1 to indicate an AP activating BWP in one cell, and then when DCI in one PDCCH can schedule PDSCH in one or more serving cells, the AP is indicated to have several optional methods as follows. The following example is described with DCI _ x scheduling PDSCH of one serving cell or scheduling PDSCH of two serving cells as an example.

Example 7.1

In this example, only one AP indication field in DCI _ x is taken as an example for explanation.

Optionally, when the DCI _ x schedules the PDSCH of only one serving cell, the AP indication field indicates the AP to which the scheduled serving cell activates BWP. As an alternative, table 9 shows a mapping relationship between an indication value (AP indication value) of an AP indication field and an AP of a serving cell indicated by the indication value, and when receiving DCI _ x, a UE may determine, based on the AP indication value and the mapping relationship in DCI _ x, an AP of a scheduled serving cell, for example, the indication value is 00, and an indication of a corresponding AP is p 0. It will be clear to those skilled in the art that the indication value and p0 etc. in this example represent a schematic representation, and that the representation of p0 etc. may correspond to a set of APs, i.e. the ports of the scheduled serving cell.

TABLE 9

AP indication value	AP serving cell 1
		00	APp0
01	AP p1
		10	AP p2
11	AP p3

Alternatively, when the DCI _ x schedules the PDSCHs of two serving cells, the AP indication field jointly indicates the scheduled two serving cells to activate the BWP AP, and each serving cell activates the BWP AP as shown in table 10. By adopting the method, the antenna ports of the two service cells can be indicated on the premise of not increasing the bit number of the AP indication field.

Watch 10

AP indication value	AP serving cell 1	AP serving cell 2
			00	AP s0	AP t0
01	AP s1	AP t1
			10	AP s2	AP t2
11	AP s3	AP t3

Example 7.2

There are two AP indication fields in DCI _ x, DCI _ x is used to schedule PDSCH of two serving cells, and each AP indication field may indicate one scheduled serving cell to activate BWP AP, i.e. one AP indication field for each scheduled serving cell. In this way, the change of the AP can be made very flexible.

Optionally, when only two AP indication fields are in DCI _ x, for the indication of the AP which activates BWP of the scheduled serving cell, one of the AP indication fields may be the AP indication field in DCI _ x, and the other AP indication field may be obtained by reusing another field, for example, by reusing the BWP indication field or MASOI field, or by increasing the number of bits of DCI _ x, so that DCI _ x includes two AP indication fields.

Example 7.3

The principle of this example is the same as that in example 3.3 in the foregoing, i.e. the APs of multiple serving cells that activate BWP can be jointly indicated by one extended AP indication field. Specific alternative embodiments can refer to the description in example 3.3 above, which is not further expanded here.

Example 8

Now, a description is given of an indication manner of MCS, NDI, and RV, where a set of MCS, NDI, and RV indication fields are currently configured in DCI format 1_1 according to signaling, or there are two sets of MCS, NDI, and RV indication fields used to indicate MCS, NDI, and RV for activating BWP in a cell, and then when DCI in a PDCCH can schedule PDSCH in one or more serving cells, MCS, NDI, and RV may have several alternatives as follows. The following example is described with DCI _ x scheduling PDSCH of one serving cell or scheduling PDSCH of two serving cells as an example.

Example 8.1

Optionally, when the DCI _ x schedules the PDSCH of only one serving cell, the MCS, NDI, and RV indication fields in the DCI _ x indicate the MCS, NDI, and RV of the scheduled serving cell activated BWP.

Optionally, when the DCI _ x schedules the PDSCHs of the two serving cells, and there is a set of MCS, NDI, and RV indication fields in the DCI _ x, the set of MCS, NDI, and RV indication fields may indicate that the two scheduled serving cells respectively activate the MCS of the BWP, and the NDI and the RV are the same. For example, in the example provided in the foregoing, the indication value of the MCS, NDI, and RV indication field may jointly indicate the MCS, NDI, and RV of BWP activation by each of the two scheduled serving cells, for example, taking the MCS indication field as an example, one indication value of one MCS indication field may simultaneously indicate the MCS of BWP activation by each of the two scheduled serving cells.

Optionally, when the DCI _ x schedules the PDSCH of two serving cells, and there are two sets of MCS, NDI, RV indication fields in the DCI _ x, each set of MCS, NDI, RV indication field may respectively indicate the MCS, NDI, and RV of a scheduled serving cell that activates BWP, for example, the first set of MCS, NDI, RV indication field is MCS _1, NDI _1, RV _1, MCS of TB in the first scheduled serving cell, NDI, RV is indicated by MCS _1, NDI _1, RV _1 indication field, the second set of MCS, NDI, RV indication field is MCS _2, NDI _2, RV _2, MCS of TB in the second scheduled serving cell, NDI, RV is indicated by MCS _2, NDI _2, RV _2 indication field.

Optionally, when the DCI _ x schedules the PDSCH of two serving cells, and there are two sets of MCS, NDI, RV indication field, two sets of MCS, NDI, RV indication field in the DCI _ x that can indicate MCS, NDI, RV of different TBs in the respective active BWPs of one scheduled serving cell, and TBs with the same TB index number in different serving cells can use the same MCS, NDI, RV, e.g., a first set of MCS, NDI, RV indication field is MCS _1, NDI _1, RV _1, MCS of a first TB in the first scheduled serving cell and MCS of a first TB in the second scheduled serving cell, NDI, RV is indicated by MCS _1, NDI _1, RV _1 indication field, a second set of MCS, NDI, RV indication field is MCS _2, NDI _2, RV _2, a second TB in the first scheduled serving cell and MCS of a second scheduled TB in the second scheduled serving cell, NDI, RV is indicated by MCS _2, NDI _2, RV _2 indication fields.

Optionally, when the DCI _ x schedules the PDSCH of two serving cells, and there are two sets of MCS, NDI, RV indication fields, two sets of MCS, NDI, RV indication fields in the DCI _ x, which may indicate MCS, NDI, RV of different TBs within respective active BWPs of one scheduled serving cell, if the number of TBs supported by the two scheduled serving cells is different, e.g. two TBs are supported by one scheduled serving cell and one TB is supported by another scheduled serving cell, optionally, the TBs with the same TB index number in different serving cells may use the same MCS, NDI, RV, e.g. the first set of MCS, NDI, and RV indication fields are MCS _1, NDI _1, RV _1, the first TB in the first scheduled serving cell and the first TB in the second scheduled serving cell, NDI, RV is indicated by MCS _1, NDI _1, RV _1 indication fields, the second set of MCS, NDI, RV indication fields are MCS _2, NDI _2, RV _2, MCS, NDI, RV for the second TB in the first scheduled serving cell is indicated by MCS _2, NDI _2, RV _2 indication fields.

It should be noted that, in practical applications, which manner is specifically adopted for the selectable indication manner of each field in the DCI _ x provided in the embodiment of the present application, the base station and the UE may have a pre-agreed manner, that is, the protocol is well defined, so that the UE may know, based on the protocol, which scheduled serving cell each field corresponds to when analyzing the content of each field in the received DCI _ x, and when one field is used for jointly indicating information of at least two serving cells, the UE may determine, based on the protocol, or based on a mapping relationship or other indication information obtained from the base station, the indication information that the field corresponds to each indicated serving cell thereof.

In addition, for each field that may be included in DCI _ x, the implementation principle of the optional indication manner corresponding to different fields may also be referred to, for example, the configuration principle of MCS indication field, and may also be applied to the configuration of other indication fields; as another example, the configuration principle of MASOI indication field may also be applied to BWP indication field.

On the basis of a new DCI provided in the embodiment of the present application, an embodiment of the present application further provides a method for receiving downlink control link data, where the method may be specifically executed by a UE, and the UE may receive the DCI from a base station through the method, specifically, as shown in fig. 2, the method may include:

step S110: receiving DCI on one serving cell, that is, receiving PDCCH on one serving cell;

step S120: and receiving data transmitted by the PDSCH of the at least one serving cell scheduled by the DCI according to the DCI, namely receiving the PDSCH on the at least one serving cell according to the information of the DCI in one PDCCH.

The DCI received by the UE may include the specific DCI provided in any embodiment of the present application.

As can be seen from the foregoing description, the serving cell in which the PDCCH carrying the DCI is located and the serving cell scheduled by the DCI are both serving cells of the UE, and the cell scheduled by the DCI may include the serving cell in which the PDCCH carrying the DCI is located, or may not include the serving cell.

Based on the method provided by the embodiment of the application, the scheduling of one or more PDSCHs can be realized on one PDCCH, the user data transmitted in the PDSCHs of one or more serving cells can be received based on one DCI, and the resources occupied by the downlink control information transmission can be reduced on the basis of ensuring the PDSCH scheduling performance.

Optionally, receiving DCI on a first serving cell includes:

The DCI with the predetermined format is a DCI with a new format provided in the embodiment of the present application, and the DCI may be used to schedule PDSCH of at least two serving cells.

Since the DCI of the predetermined format can be used to schedule the PDSCHs of the at least two serving cells, when the DCI of the predetermined format includes indication information corresponding to the PDSCHs of the at least two serving cells, data transmitted by the PDSCHs of the at least two serving cells scheduled by the DCI may be received according to the DCI.

Optionally, the method may further include:

and transmitting Hybrid Automatic Repeat request acknowledgement (HARQ-ACK) information corresponding to the PDSCH of the at least one second serving cell.

When the DCI with the predetermined format includes PDSCH information of at least two serving cells, the UE may send HARQ-ACK information corresponding to the PDSCH of the at least two serving cells.

Specifically, the DCI of the predetermined format may include a field used for determining whether the DCI is a field for scheduling a PDSCH of one serving cell or a field used for scheduling a PDSCH of at least two serving cells, and the UE may receive data transmitted by PDSCHs of multiple serving cells scheduled by the DCI according to the field when determining that the DCI is a PDSCH for scheduling at least two serving cells. The predetermined field can be used to determine whether the DCI with the predetermined format schedules the PDSCH of one serving cell or schedules the PDSCH of multiple serving cells, and can also be used to indicate which serving cell or cells the DCI specifically schedules, so that the UE can receive data transmitted by the PDSCH of each serving cell scheduled by the DCI.

determining a serving cell indicated by each indication field of the DCI;

Optionally, determining the serving cell indicated by each indication field of the DCI includes:

In practical application, when the DCI with the predetermined format schedules the PDSCH of at least two serving cells, the UE needs to determine whether each field in the DCI is specifically used for indicating one serving cell or two serving cells, so as to determine the indication information corresponding to each scheduled serving cell, and thus receive data according to the indication information corresponding to each scheduled serving cell.

Optionally, taking the example that the DCI with the predetermined format schedules two serving cells, when the base station and the UE may schedule two serving cells, each indication field specifically indicates whether one serving cell or two serving cells is used by the base station and the UE. For example, taking the BWP indication field as an example, it may be agreed that the BWP indication field is used to indicate two serving cells, and it may be predefined which serving cell specifically indicates, such as the serving cell with the smallest cell index number. Thus, the UE can determine the serving cell specifically indicated by the BWP indication field according to the convention.

As another alternative, the UE may determine whether each field in the DCI of the predetermined format is specifically used for indicating one or more serving cells by acquiring corresponding indication information from the base station.

It can be understood that different fields in the DCI of the predetermined format may adopt different configurations, and the UE may process different fields according to different configurations, for example, some fields are agreed by a protocol, and some fields need to acquire indication information from the base station.

That is to say, in practical applications, when the DCI with the predetermined format schedules PDSCHs of two or more serving cells, for the indication field in the DCI, the UE may further receive, from the base station, a corresponding relationship between the indication field and a specific indication that the indication field corresponds to each serving cell scheduled by the UE, and the UE may determine, according to the specific indication value of the indication field and the corresponding relationship, the specific indication that the field corresponds to each serving cell scheduled by the UE.

It should be noted that, as can be seen from the foregoing description about the specific DCI, since the DCI may be a PDSCH scheduling one serving cell or a PDSCH scheduling multiple serving cells, if multiple PDSCHs are scheduled, the UE needs to determine which serving cell the indication information of each field of the DCI corresponds to, or if the indication information of one field indicates two serving cells simultaneously, it needs to determine what indication information is specific to each serving cell according to the indication value of the indication field, for example, taking the BWP indication field as an example, when the specific DCI is a PDSCH scheduling two serving cells, the UE needs to determine which BWP indication field is used to indicate which or to indicate BWP handover of the two serving cells simultaneously, for example, when there is only one BWP indication field, if the field indicates two serving cells simultaneously, it can determine a specific indication for each serving cell based on the indication value of the BWP indication field, as described above, the BWP to which each serving cell is handed over is determined based on the indication value and the mapping relationship.

It is clear to those skilled in the art that, for different DCI field configuration modes, the UE may obtain corresponding information by using a desired parsing mode when receiving the DCI. When the specific DCI of the embodiment of the present application is used to schedule PDSCH of multiple serving cells, the indication information for each serving cell may be determined by using a corresponding parsing method by referring to the indication manners of each field of the DCI provided in the foregoing optional embodiments. For example, when the indication for each serving cell needs to be determined based on the indication values and the mapping relationships of the fields, the base station may send the mapping relationships to the UE through higher layer signaling or other manners.

In addition, in the downlink data receiving method provided in the embodiment of the present application, for different DCI _ x configurations, when receiving user data transmitted by a PDSCH, the corresponding data receiving method may be adjusted based on a specific configuration.

The embodiment of the present application further provides a method for detecting a physical downlink control channel PDCCH, where the method may be specifically executed by a UE, and the UE may perform PDCCH detection by using the method and receive the PDCCH from a base station, and specifically, as shown in fig. 3, the method may include:

step S310: determining detection information of PDCCH candidates for scheduling PDSCH/PUSCH of a first serving cell, wherein the detection information comprises first detection information for PDCCH detection in the first serving cell and second detection information for PDCCH detection in a second serving cell.

The first serving cell may be a primary cell or a secondary cell, and the first serving cell may be scheduled by the first serving cell and a second serving cell, where the second serving cell is at least one secondary cell. That is to say, the first serving cell is a scheduled cell, the first serving cell and the second serving cell are scheduling cells, and the PDCCH for scheduling the first serving cell may be transmitted in the first serving cell and the second serving cell.

In an optional embodiment of the present application, the detection information for determining the PDCCH candidate for scheduling the first serving cell includes first detection information for performing PDCCH detection in the first serving cell and second detection information for performing PDCCH detection in the second serving cell by the UE.

Note that the names of the detection information (detection information, first detection information, second detection information, and the like) related to the embodiments of the present application are not unique, and other names may be used, and the detection information refers to information related to PDCCH detection, and may include, but is not limited to, the number of PDCCH candidates to be detected and/or the number of non-overlapping Control Channel Elements (CCEs) to be detected.

Step S320: and performing PDCCH detection on the first serving cell according to the first detection information, and performing PDCCH detection on the second serving cell according to the second detection information.

Step S330: and receiving the PDSCH or PUSCH scheduled by the PDCCH according to the detected PDCCH information.

That is, the UE may receive the PDCCH after detecting the PDCCH, and receive the PDSCH or PUSCH scheduled by the PDCCH according to the detected PDCCH information indicating all information required for the UE to receive the PDSCH or PUSCH, the time-frequency domain resource allocation information indicated by the DCI included in the PDCCH, or the like.

Optionally, the detection information for determining the PDCCH candidate for scheduling the first serving cell includes the number of PDCCH candidates to be detected and/or the number of non-overlapping CCEs.

That is, the first detection information for PDCCH detection on the first serving cell includes the number of PDCCH candidates and/or the number of non-overlapping CCEs to be detected in the first serving cell. And second detection information for PDCCH detection on the second serving cell comprises the number of PDCCH candidates to be detected and/or the number of non-overlapping CCEs on the second serving cell.

In an optional embodiment of the present application, the PDCCH candidate is a first PDCCH candidate for scheduling a PDSCH of the first serving cell or a second PDCCH candidate for scheduling a PUSCH of the first serving cell.

As an alternative, the PDCCH candidate for scheduling the first serving cell may be the first PDCCH candidate for scheduling the PDSCH of the first serving cell.

As an alternative, the PDCCH candidate for scheduling the first serving cell may be a second PDCCH candidate for scheduling the PUSCH of the first serving cell.

In an alternative embodiment of the present application, the PDCCH candidates comprise PDCCH candidates corresponding to CSS and/or PDCCH candidates corresponding to USS. The number of non-overlapping CCEs includes the number of non-overlapping CCEs corresponding to CSS and/or the number of non-overlapping CCEs corresponding to USS.

As an alternative, the above-described PDCCH candidates may include PDCCH candidates corresponding to CSS.

As an alternative, the above-described PDCCH candidates may include PDCCH candidates corresponding to the CSS and PDCCH candidates corresponding to the USS.

As an alternative, the PDCCH candidates may include PDCCH candidates corresponding to the USS.

Optionally, the first serving cell may be a primary cell, the second serving cell may be a secondary cell, and the PDCCH for scheduling the first serving cell may include PDCCH candidates for scheduling CSS and USS of PDSCH and/or PUSCH. Accordingly, a (Monitor) PDCCH may be detected on the PDCCH of the determined CSS and the PDCCH candidate of the USS.

the second detection information corresponds to detection information of a PDCCH candidate of the CSS and/or detection information of a PDCCH candidate corresponding to the USS.

As an alternative, the first detection information may include detection information of PDCCH candidates corresponding to the CSS and detection information of PDCCH candidates corresponding to the USS, and the second detection information may include detection information of PDCCH candidates corresponding to the USS.

That is, in practical applications, the first detection information may include the number of PDCCH candidates corresponding to CSS and/or the number of non-overlapping CCEs, and/or the number of PDCCH candidates corresponding to USS and/or the number of non-overlapping CCEs to be detected by the UE in the first serving cell. The second detection information includes the number of PDCCH candidates and/or number of non-overlapping CCEs corresponding to CSS and/or the number of PDCCH candidates and/or number of non-overlapping CCEs corresponding to USS to be detected by the UE in the second serving cell.

As an alternative, the first detection information may include the number of PDCCH candidates corresponding to CSS and USS and the number of non-overlapping CCEs to be detected by the UE in the first serving cell, and the second detection information includes the number of PDCCH candidates corresponding to USS and the number of non-overlapping CCEs to be detected by the UE in the second serving cell.

As shown in fig. 4, the first serving cell may be a primary cell Pcell, the second serving cell may be a secondary cell Scell, and the UE may detect a PDSCH and/or a PUSCH for scheduling the primary cell Pcell on the primary cell Pcell, such as a PDCCH candidate corresponding to the CSS and a part of the PDCCH candidates corresponding to the USS. PDSCH and/or PUSCH for scheduling the primary cell Pcell may also be detected on the secondary cell Scell, as a portion of PDCCH candidates corresponding to the USS.

detection capability configuration information of a first serving cell;

detection capability configuration information of the second serving cell;

SubCarrier space (SCS) configuration information of a first serving cell;

SCS configuration information of the second serving cell.

In an optional embodiment of the present application, the SCS configuration information of the first serving cell is SCS configuration information of the first serving active downlink BWP, and the SCS configuration information of the second serving cell is SCS configuration information of the second serving active downlink BWP. Moreover, the SCS configuration information of the activated downlink BWP of the first serving cell and the SCS configuration information of the activated BWP of the second serving cell that schedules the first serving cell may be the same or different.

For any serving cell, the detection capability configuration (monitongcapabilityaconfig) information of the serving cell may include information related to the detection capability configuration of the R16 protocol corresponding to the third generation partnership project (3 GPP), or may include other information indicating display or implicit information of the detection capability configuration of the serving cell, which is not limited in this application.

The information about the sensing capability configuration monitorability config-R16 specifically indicates that the sensing capability provided by the serving cell to the UE may be a sensing capability corresponding to the R16 protocol (monitorability config-R16 ═ R16 monitorability) or may be a sensing capability corresponding to the R15 protocol (monitorability config-R16 ═ R15 monitorability), and both of the sensing capabilities respectively represent different sensing capabilities.

It should be particularly noted that the detection capability configuration information of the first serving cell and the detection capability configuration information of the second serving cell may be the same or different.

Note that the names of the detection capability configuration information in the embodiments of the present application are not exclusive, and other names may be used, and the detection capability configuration information refers to information on the capability of the UE to perform PDCCH detection.

As an example, the first serving cell is a primary cell Pcell, the second serving cell is a secondary cell Scell, and when the detection capability configuration information of both the Pcell and the Scell does not provide information related to monitorengability config-r16, or provides information related to the same monitorengability config-r16 (e.g., the Pcell and the Scell provide the same monitorengability config-r16 ═ r16 monitorebility, or provide the same monitorengability config-r16 ═ r15 monitorebility), it is described that the detection capability configuration information of the Pcell is the same as the detection capability configuration information of the Scell.

When the information on the monitorability config-r16 provided by the detection capability configuration information of the Pcell is, specifically, monitorability config-r 16-r 16 monitorability, the information on the monitorability config-r16 provided by the detection capability configuration information of the Scell is, specifically, monitorability config-r 16-r 15 monitorability, or the information on the monitorability config-r16 provided by the detection capability configuration information of the Pcell is, specifically, monitorability config-r 16-r 15 monitorability, and the information on the monitorability config-r16 provided by the detection capability configuration information of the Pcell is, specifically, the information on the monitorability config-r 3583 provided by the detection capability configuration information of the Pcell is, and the detection capability configuration information of the Pcell is, specifically, the detection capability configuration information of the Pcell is, and the detection capability configuration information of the Pcell is, the monitorability config-r 16. Or the detection capability configuration information of any one service cell of the Pcell and the Scell provides the relevant information of monitoringCapabilityConfig-r16, and the detection capability configuration information of the other service cell does not provide the relevant information of monitoringCapabilityConfig-r16, which indicates that the detection capability configuration information of the Pcell is different from the detection capability configuration information of the Scell.

In an alternative embodiment of the present application, the first total number is a total number of PDCCH candidates and/or a total number of non-overlapping CCEs used for scheduling the first serving cell.

As an alternative, the first serving cell is a primary cell Pcell, the second serving cell is a secondary cell Scell, and the first total number may be a total PDCCH candidate number and/or a total number of non-overlapping CCEs in the Pcell and Scell for scheduling the Pcell.

In an optional embodiment of the present application, the detection information for scheduling the PDCCH candidate of the first serving cell may be determined according to any one or a combination of the first total number, the detection capability configuration information of the first serving cell and the second serving cell, and the SCS configuration information of the first serving cell and the second serving cell.

As an alternative, the detection information for scheduling the PDCCH candidate of the first serving cell may be determined according to the first total number.

As an alternative, the detection information for scheduling the PDCCH candidate of the first serving cell may be determined according to the first total number, the detection capability configuration information of the first serving cell and the second serving cell, and the SCS configuration information of the first serving cell and the second serving cell.

Optionally, the determining the detection information of the PDCCH candidate for scheduling the first serving cell includes:

determining maximum detection capability information;

In an optional embodiment of the present application, the maximum detection capability information includes a maximum number of detections that the UE can detect a PDCCH candidate for scheduling the first serving cell in the first serving cell and the second serving cell, and/or a maximum number of detections of non-overlapping CCEs for scheduling the first serving cell.

That is, the maximum detection capability information may include, but is not limited to, one or more of the maximum number of detections that the UE may detect PDCCH candidates for scheduling the first serving cell in the first serving cell and the second serving cell, and the maximum number of detections that the UE may detect non-overlapping CCEs for scheduling the first serving cell in the first serving cell and the second serving cell.

Optionally, determining the maximum detection capability information includes:

determining maximum detection capability information corresponding to the first serving cell and the second serving cell in response to the detection capability configuration information of the first serving cell and the second serving cell being the same as the SCS configuration information.

In an optional embodiment of the present application, for any serving cell, when the detection capability configuration information provided by the serving cell includes monitoringCapabilityConfig-r16 ═ r16monitoringcapability, the maximum number of detections of the PDCCH candidate for scheduling the first serving cell in the serving cell is detected by the UE as

And/or detecting a maximum number of detections of non-overlapping CCEs used to schedule the first serving cell as

Wherein the content of the first and second substances,

the maximum number of PDCCH candidates detectable for a UE within one time unit (x, y) in one serving cell with the SCS configured to mu,

the total number of PDCCH candidates detectable in one time unit (x, y) in all serving cells (the UE's serving cells) configured to μ for the SCS for the UE.

Maximum number of non-overlapping CCEs detectable within one time unit (x, y) in one serving cell with SCS configured to μ for a UE,

the total number of non-overlapping CCEs detectable within one time unit (x, y) in all serving cells (the UE's serving cells) configured to μ for the UE at the SCS. For the R16 protocol, the time unit (x, y) is a smaller time granularity than a time slot, such as may be referred to as a minislot.

Wherein the content of the first and second substances,

to represent

And

the minimum value of (a) to (b),

to represent

And

minimum value of (1). Alpha 1 is a relevant parameter for determining the maximum detection number, is configured by a high-level signaling or is determined by presetting (protocol agreement), and alpha 1 is more than or equal to 0 and less than or equal to 1.

In an optional embodiment of the present application, for any serving cell, when the detection capability configuration information provided by the serving cell includes monitoringCapabilityConfig-r16 ═ r15monitoringcapability, the UE detects, in the serving cell, the maximum number of detections for scheduling the PDCCH candidate of the first serving cell

Wherein the content of the first and second substances,

the maximum number of PDCCH candidates detectable for a UE in one slot in one serving cell with the SCS configured to mu,

the total number of PDCCH candidates detectable in one slot in all serving cells (UE's) configured to μ for the UE at the SCS.

The maximum number of non-overlapping CCEs detectable within one slot in one serving cell with SCS configured to mu,

non-overlap detectable for a UE in one time slot in all serving cells with SCS configured to μ (the UE's serving cell)Total number of CCEs.

Wherein the content of the first and second substances,

to represent

And

the minimum value of (a) to (b),

to represent

And

minimum value of (1). Alpha 2 is a relevant parameter for determining the maximum detection number, is configured by a high-level signaling or is determined by presetting (protocol agreement), and alpha 2 is more than or equal to 0 and less than or equal to 1.

It should be particularly noted that the serving cell may determine the maximum detection times for detecting PDCCH candidates for scheduling the first serving cell and the maximum detection times for detecting non-overlapping CCEs for scheduling the first serving cell based on the actual detection capability configuration information of the serving cell, which is only an example and is not limited in this application.

In an optional embodiment of the present application, the maximum detection capability information is a sum of maximum detection times that the UE detects PDCCH candidates for scheduling the first serving cell in the first serving cell and the second serving cell, respectively, and/or a sum of maximum detection times that the UE detects non-overlapping CCEs for scheduling the first serving cell in the first serving cell and the second serving cell, respectively.

In an alternative embodiment of the present application, the first total number is less than or equal to the maximum detectability information,

and determining the first total number as detection information corresponding to the first serving cell and the second serving cell. That is, the first total number is determined as the number of PDCCH candidates and/or the number of non-overlapping CCEs that the UE finally detects in the first serving cell and the second serving cell.

Optionally, when the first total number is greater than the maximum detection capability information, the maximum detection capability information is determined as detection information corresponding to the first serving cell and the second serving cell. That is, the maximum detection capability information is determined as the number of PDCCH candidates and/or the number of non-overlapping CCEs that the UE finally detects in the first serving cell and the second serving cell.

Optionally, determining detection information of a PDCCH candidate for scheduling the first serving cell based on the first total number and the maximum detection capability information includes:

In an optional embodiment of the present application, according to detection information corresponding to a first serving cell and a second serving cell, first detection information and second detection information are determined, specifically, the detection information corresponding to the first serving cell and the second serving cell is allocated, the number of PDCCH candidates and/or the number of non-overlapping Control Channel Elements (CCEs) to be detected by a UE when the first serving cell performs PDCCH detection is determined, and the number of PDCCH candidates and/or the number of non-overlapping Control Channel Elements (CCEs) to be detected when the second serving cell performs PDCCH detection is determined.

Optionally, when the first total number is greater than the maximum detection capability information, determining first detection information and second detection information according to detection information corresponding to the first serving cell and the second serving cell, where the determining includes:

The detection priority and the detection priority of the first serving cell and the second serving cell are the priorities that the number of PDCCH candidates and/or the number of non-overlapping CCEs that the UE finally detects in the first serving cell and the second serving cell are allocated to the CSS set and the USS set corresponding to the first serving cell and the USS set corresponding to the second serving cell, and the specific priority setting is not limited in the application.

In an optional embodiment of the present application, the detection priority levels corresponding to the first serving cell and the second serving cell are specifically expressed as that after the PDCCH candidate number and/or the number of non-overlapping CCEs that the UE finally detects in the first serving cell and the second serving cell are allocated to the SCC set corresponding to the first serving cell, the remaining PDCCH candidate number and/or the number of non-overlapping CCEs are allocated to the USS set corresponding to the first serving cell or the USS set corresponding to the second serving cell first.

In an optional embodiment of the present application, the detection priorities of the first serving cell and the second serving cell may also be represented by allocating a CSS set and a USS set corresponding to the first serving cell first or allocating a USS set corresponding to the second serving cell first when allocating PDCCH candidate numbers and/or non-overlapping CCE numbers to be finally detected by the UE in the first serving cell and the second serving cell.

As an alternative, when the detection priority corresponding to the first serving cell is higher than the detection priority corresponding to the second serving cell, the number of PDCCH candidates and/or non-overlapping CCEs that the UE finally detects in the first serving cell and the second serving cell is first allocated to the CSS set corresponding to the first serving cell, and then the remaining number of PDCCH candidates and/or non-overlapping CCEs is allocated to each USS corresponding to the first serving cell according to the index of each USS in the USS set corresponding to the first serving cell. And if the number of the residual PDCCH candidates and/or the number of the non-overlapped CCEs is still remained, distributing the number of the residual PDCCH candidates and/or the number of the non-overlapped CCEs according to the index of each USS in the USS set corresponding to the second serving cell. At this time, the number of PDCCH candidates and/or non-overlapping CCEs in the CSS set and the USS set corresponding to the first serving cell is first detection information for performing PDCCH detection in the first serving cell by the UE, and the number of PDCCH candidates and/or non-overlapping CCEs in the USS set corresponding to the second serving cell is second detection information for performing PDCCH detection in the second serving cell by the UE.

As an alternative, when the detection priority of the second serving cell is higher than the detection priority of the first serving cell, specifically, when the detection priority of the USS set corresponding to the second serving cell is higher than the detection priority of the USS set corresponding to the first serving cell, first, the PDCCH candidate number and/or the number of non-overlapping CCEs that the UE finally detects in the first serving cell and the second serving cell are allocated to the CSS set corresponding to the first serving cell, and then, according to the index of each USS in the USS set corresponding to the second serving cell, the remaining PDCCH candidate number and/or the number of non-overlapping CCEs are allocated to each USS corresponding to the second serving cell. And if the number of the remaining PDCCH candidates and/or the number of the non-overlapped CCEs is still remained, allocating the number of the remaining PDCCH candidates and/or the number of the non-overlapped CCEs according to the index of each USS in the USS set corresponding to the first serving cell. At this time, the number of PDCCH candidates and/or non-overlapping CCEs in the CSS set and the USS set corresponding to the first serving cell is first detection information for performing PDCCH detection in the first serving cell by the UE, and the number of PDCCH candidates and/or non-overlapping CCEs in the USS set corresponding to the second serving cell is second detection information for performing PDCCH detection in the second serving cell by the UE.

determining maximum detectability information, comprising:

In an alternative embodiment of the present application, the second total number corresponding to the first serving cell includes a total number of PDCCH candidates and/or a total number of non-overlapping CCEs used for scheduling the first serving cell and corresponding to the first serving cell. The third total number corresponding to the second serving cell includes a total number of PDCCH candidates and/or a total number of non-overlapping CCEs used to schedule the first serving cell and corresponding to the second serving cell.

In an optional embodiment of the present application, the first maximum detection capability information corresponding to the first serving cell includes a maximum number of detections for detecting a PDCCH candidate for scheduling the first serving cell in the first serving cell, and/or a maximum number of detections for detecting a non-overlapping CCE for scheduling the first serving cell. The second maximum detection capability information corresponding to the second serving cell includes a maximum number of detections for detecting PDCCH candidates for scheduling the first serving cell in the second serving cell and/or a maximum number of detections for detecting non-overlapping CCEs for scheduling the first serving cell.

First detection information for PDCCH detection in the first serving cell does not exceed first maximum detection capability information corresponding to the first serving cell. That is, when the second total number is less than or equal to the first maximum detection capability information, the second total number is determined as the first detection information corresponding to the first serving cell. When the second total is greater than the first maximum detection capability information, determining the first maximum detection capability information as first detection information corresponding to the first serving cell.

And second detection information for PDCCH detection in the second serving cell does not exceed second maximum detection capability information corresponding to the second serving cell. That is, when the third total is less than or equal to the second maximum detection capability information, the third total is determined as the second detection information corresponding to the second serving cell. And determining the second maximum detection capability information as second detection information corresponding to the first serving cell when the third total is greater than the second maximum detection capability information.

Optionally, the number of the detected DCI sizes when the UE performs PDCCH detection on the first serving cell and the second serving cell is less than or equal to the first value.

Optionally, the number of the detected DCI sizes when performing PDCCH detection on the first serving cell is less than or equal to the second value.

Optionally, the number of the detected DCI sizes when performing PDCCH detection on the second serving cell is less than or equal to a third value.

The first value, the second value, and the third value may be the same or different, and are not limited in this application.

As an alternative, while limiting the number of first DCIs detected by the UE when performing PDCCH detection on the first serving cell and the second serving cell, the number of first DCIs detected by the UE when performing PDCCH detection on the first serving cell and/or the number of first DCIs detected when performing PDCCH detection on the second serving cell are limited, respectively.

As an alternative, the number of first DCIs detected by the UE when performing PDCCH detection on the first serving cell and/or the number of first DCIs detected when performing PDCCH detection on the second serving cell may be limited, and the number of first DCIs detected by the UE when performing PDCCH detection on the first serving cell and the second serving cell is not limited.

For example, the number of sizes of DCI detected when PDCCH detection is performed on the first serving cell and the second serving cell is less than or equal to 4. And, the number of the detected DCI sizes when PDCCH detection is performed on the first serving cell is less than or equal to 2; the number of sizes of the detected DCI when PDCCH detection is performed on the second serving cell is less than or equal to 2.

Optionally, the number of the first DCI detected by the UE when performing PDCCH detection on the first serving cell and the second serving cell is less than or equal to the fourth value.

Optionally, the number of the first DCI detected when performing PDCCH detection on the first serving cell is less than or equal to a fifth value.

Optionally, the number of the first DCI detected when performing PDCCH detection on the second serving cell is less than or equal to the sixth value.

The first DCI is a DCI which scrambles Cyclic Redundancy Check (CRC) by using a Cell Radio Network Temporary Identity (C-RNTI).

The fourth value, the fifth value and the sixth value may be the same or different, and are not limited in this application.

As an alternative, while limiting the number of DCI sizes detected by the UE when performing PDCCH detection on the first serving cell and the second serving cell, the number of DCI sizes detected by the UE when performing PDCCH detection on the first serving cell and/or the number of DCI sizes detected when performing PDCCH detection on the second serving cell are limited, respectively.

As an alternative, the number of the sizes of the DCI detected by the UE when performing the PDCCH detection on the first serving cell and/or the number of the sizes of the DCI detected when performing the PDCCH detection on the second serving cell may be limited, and the number of the sizes of the DCI detected by the UE when performing the PDCCH detection on the first serving cell and the second serving cell is not limited.

For example, the number of first DCIs detected when PDCCH detection is performed on the first serving cell and the second serving cell is less than or equal to 3. Moreover, the number of the first DCI detected when the PDCCH detection is carried out on the first serving cell is less than or equal to 1; the number of first DCI detected when PDCCH detection is performed on the second serving cell is less than or equal to 2.

Based on the above optional embodiments, it may be achieved that a plurality of serving cells schedule one serving cell, that is, a PDCCH corresponding to the scheduled serving cell may transmit through the resource of the scheduled serving cell, or may transmit through the resource of the scheduled serving cell.

Example 9

Taking the first serving cell as the primary cell Pcell and the second serving cell as the secondary cell Scell as examples, several cases of determining the detection information of the PDCCH candidate for scheduling the first serving cell are further described by several examples.

Example 9.1

The SCS configuration information of the activated downlink BWP of the Pcell is the same as the SCS configuration information of the activated downlink BWP of the Scell, and the detection capability configuration information of the Pcell is the same as the detection capability configuration information of the Scell.

If neither the detection capability configuration information of the Pcell nor the detection capability configuration information of the Scell provides information related to monitoringCapabilityConfig-r16, or neither the monitoringCapabilityConfig-r16 is r15monitoringcapability, it is determined that the detection capability configuration information of the Pcell and the Scell is the same. There are the following 2 methods to determine detection information of a PDCCH candidate for scheduling a first serving cell.

The method comprises the following steps:

requiring the UE to detect no more than PDCCH candidates in Pcell and Scell for scheduling Pcell

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. Mu is SCS configuration of the service cell, gamma is related parameter for determining the maximum detection number, and is configured by high-level signaling or determined by presetting (protocol agreement), and gamma is more than or equal to 1 and less than or equal to 2.

Further, in time slot n, Pcell corresponds to I_cssA CSS set, Pcell corresponding to J_{uss_1}The USS set and the Scell correspond to J_{uss_2}A set of USSs. Note the book

Number of PDCCH candidates in CSS set i

Number of PDCCH candidates in USS set corresponding to Pcell is recorded

The number of PDCCH candidates in the USS set corresponding to the Scell.

When the first total number exceeds

Or, exceed

When the detection priority of the Pcell is higher than that of the Scell, firstly, the PDCCH candidate and the number of non-overlapping CCEs corresponding to the maximum information detection capability are allocated to a CSS set corresponding to the Pcell, and then the rest PDCCH candidates and the number of non-overlapping CCEs are allocated to a USS set corresponding to the Pcell and a USS set corresponding to the Scell. Since the USS corresponding to the Pcell and the USS corresponding to the Scell are separately indexed, the PDCCH candidates and the non-overlapping CCE number allocation methods of the USS set corresponding to the Pcell and the USS set corresponding to the Scell may be determined in the following two ways.

Mode A: and allocating the rest PDCCH candidates and the number of the non-overlapping CCEs to each USS in the USS set corresponding to the Pcell according to the index of each USS in the USS set corresponding to the Pcell, and allocating the rest PDCCH candidates and the number of the non-overlapping CCEs to the USS set corresponding to the Scell after all the PDCCH candidates and the number of the non-overlapping CCEs in the USS set corresponding to the Pcell are allocated. By adopting the method, the transmission of the PDCCH candidates corresponding to the Pcell can be preferentially ensured, and the reconfiguration of the UE can be ensured.

Mode B: and allocating the rest PDCCH candidates and the number of the non-overlapping CCEs to the USS set corresponding to the Scell according to the index of each USS in the USS set corresponding to the Scell, and allocating the rest PDCCH candidates and the number of the non-overlapping CCEs to the USS set corresponding to the Pcell after all the PDCCH candidates and the number of the non-overlapping CCEs of the USS set corresponding to the Scell are allocated. By adopting the method, the transmission of the PDCCH candidate corresponding to the Scell can be preferentially ensured, and resources occupied by the PDCCH in the Pcell can be saved as much as possible.

In addition, for the detection of PDCCH candidates corresponding to the Pcell and the Scell scheduling the Pcell, the UE detects 4 DCI formats with different sizes at most, wherein the UE detects 3 DCI formats with different sizes of C-RNTI scrambling CRC at most. Or, for the detection of the PDCCH candidate corresponding to the Pcell for scheduling the Pcell, the UE detects 4 DCI formats with different sizes at most, wherein the UE detects 3 DCI formats with C-RNTI scrambling CRC with different sizes at most. Or, for the detection of the PDCCH candidate corresponding to the Scell of the scheduling Pcell, the UE detects 4 DCI formats with different sizes at most, wherein the UE detects 3 DCI formats with C-RNTI scrambling CRC with different sizes at most.

The second method comprises the following steps:

for first detection information used for scheduling Pcell and carrying out PDCCH detection on the Pcell, UE (user equipment) is required to detect no more than

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. Gamma 1 is a relevant parameter for determining the maximum detection number, is configured by a high-level signaling or is determined by presetting, and is more than or equal to 0 and less than or equal to 1.

For second detection information used for scheduling Pcell and carrying out PDCCH detection on Scell, UE is required to detect no more than

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. Mu is SCS configuration of the service cell, gamma 2 is related parameter for determining the maximum detection number, and is configured by high-level signaling or determined by presetting, and gamma 2 is more than or equal to 0 and less than or equal to 1.

In addition, for the detection of PDCCH candidates corresponding to the Pcell and the Scell scheduling the Pcell, the UE detects 4 DCI formats with different sizes at most, wherein the UE detects 3 DCI formats with different sizes of C-RNTI scrambling CRC at most. Or, for the detection of the PDCCH candidate corresponding to the Pcell for scheduling the Pcell, the UE detects 4 DCI formats with different sizes at most, wherein the UE detects 3 DCI formats with C-RNTI scrambling CRC with different sizes at most. Or, for the detection of the PDCCH candidate corresponding to the Scell of the scheduling Pcell, the UE detects 4 DCI formats with different sizes at most, wherein the UE detects 3 DCI formats with C-RNTI scrambling CRC with different sizes at most. By adopting the method, the alignment of DCI with different sizes can be reduced, and the DCI detection performance is improved.

Example 9.2

SCS configuration information (mu) of activated downlink BWP of the Pcell is different from SCS configuration information of activated downlink BWP of the Scell, and detection capability configuration information of the Pcell is the same as detection capability configuration information of the Scell.

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. Mu 1 is SCS configuration of a service cell, alpha 1 is configured by high-level signaling or determined by presetting, and alpha 1 is more than or equal to 0 and less than or equal to 1.

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. Mu 2 is SCS configuration of the service cell, alpha 2 is related parameter for determining the maximum detection number, which is configured by high-level signaling or determined by presetting (protocol agreement), and alpha 2 is more than or equal to 0 and less than or equal to 1.

Example 9.3

SCS configuration information (mu) of activated downlink BWP of the Pcell is the same as SCS configuration information of activated downlink BWP of the Scell, and detection capability configuration information of the Pcell is different from detection capability configuration information of the Scell.

For example, the Pcell detection capability configuration information provides monitoringCapabilityConfig-r16 ═ r16monitoringcapability, the Scell detection capability configuration information provides monitoringCapabilityConfig-r16 ═ r15monitoringcapability, and the Pcell detection capability configuration information is not identical to the Scell detection capability configuration information.

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. Mu is SCS configuration of the service cell, alpha 1 is related parameter for determining the maximum detection number, and alpha 1 is more than or equal to 0 and less than or equal to 1 and is configured by high-level signaling or determined by presetting (protocol agreement).

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. μ SCS configuration for serving cell, α 2 is forThe related parameters of the maximum detection number are determined by the configuration of high-level signaling or by presetting (protocol agreement), and alpha 2 is more than or equal to 0 and less than or equal to 1.

Or the detection capability configuration information of the Pcell provides monitoringCapabilityConfig-r16 ═ r15monitoringcapability, the detection capability configuration information of the Scell provides monitoringCapabilityConfig-r16 ═ r16monitoringcapability, and the detection capability configuration information of the Pcell is different from the detection capability configuration information of the Scell.

Number of PDCCH candidates not exceeding

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. Mu is SCS configuration of the service cell, alpha 2 is related parameter for determining the maximum detection number, which is configured by high-level signaling or determined by presetting (protocol agreement), and alpha 2 is more than or equal to 0 and less than or equal to 1.

Example 9.4

SCS configuration information (mu) of activated downlink BWP of the Pcell is different from SCS configuration information of activated downlink BWP of the Scell, and detection capability configuration information of the Pcell is different from detection capability configuration information of the Scell.

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. Mu 1 is SCS configuration of a service cell, alpha 1 is related parameters for determining the maximum detection number, and alpha 1 is configured by high-level signaling or determined by presetting (protocol agreement), and is more than or equal to 0 and less than or equal to 1.

For second detection information which is used for scheduling Pcell and performing PDCCH detection on Scell, UE is required to detect no more than

Number of PDCCH candidates not exceeding

The number of non-overlapping CCEs. Mu 2 is SCS configuration of service cell, alpha 2 is related parameter for determining maximum detection number, and higher layerThe signaling configuration is determined by presetting (protocol agreement), and alpha 2 is more than or equal to 0 and less than or equal to 1.

Number of PDCCH candidates not exceeding

Number of PDCCH candidates not exceeding

Based on the same principle as the configuration method of the downlink control information provided in the embodiments of the present application, an embodiment of the present application further provides a configuration apparatus of the downlink control information, where the apparatus includes at least one processor, and the at least one processor is configured to:

configuring specific DCI of one format, wherein the specific DCI is used for scheduling PDSCH of at least one second serving cell on one first serving cell.

Optionally, the number of bits of the specific DCI satisfies at least one of:

the number of bits of the specific DCI is equal to the specified number of bits;

the number of bits of the specific DCI is not equal to the number of bits of any existing DCI;

the number of bits of the specific DCI is equal to the number of bits of the existing first designated DCI of the first serving cell;

the bit number of the specific DCI is equal to the bit number of a second designated DCI existing in any one of at least one second serving cell;

when the specific DCI is used for scheduling PDSCHs of at least two second serving cells, the bit number of the specific DCI is equal to the bit number of a third designated DCI meeting a first preset condition in existing third designated DCIs of each serving cell of the at least two second serving cells;

when the specific DCI is used to schedule the PDSCH of the at least two second serving cells, the bit number of the specific DCI is equal to the bit number of an existing fourth specific DCI of a serving cell satisfying the second preset condition among the at least two second serving cells.

Optionally, the first preset condition includes at least one of:

the bit number is maximum; the number of bits is minimal.

Optionally, the second preset condition includes at least one of:

the serving cell index is minimum; the serving cell index is maximum; the number of TBs supported by the serving cell is maximum; the number of TBs supported by the serving cell is minimal.

Optionally, when the specific DCI is used to schedule the PDSCH of the at least two second serving cells, and the bit number of the specific DCI is equal to the bit number of a second designated DCI existing in any one of the at least one second serving cell, the at least one processor is further configured to:

if the bit number of the second designated DCI of each of the at least two second serving cells is not completely the same, configuring fields included in the specific DCI based on fields included in the second designated DCI, which are equal to the bit number of the specific DCI;

if the bit number of the second specific DCI of each of the at least two second serving cells is the same, the field included in the specific DCI is configured based on the field included in the second specific DCI of the serving cell satisfying the third preset condition among the at least two second serving cells.

Optionally, a predetermined field is included in the specific DCI, where the predetermined field is used to indicate a second serving cell scheduled by the specific DCI;

wherein the predetermined field is a newly defined field or a field included in newly defined existing DCI.

The at least one processor is further configured for including in the particular DCI at least one of the following fields:

a BWP indication field; a MASOI field; an RMI field; a ZCRT field; an AP field; an MCS field; an NDI field; and an RV field.

Optionally, for any one of the BWP indication field or the MASOI field, if the number of the fields contained in the specific DCI is less than the number of the second serving cells, the field satisfies at least one of the following:

an indication of indication information corresponding to the field in the at least one field for at least two of the at least two second serving cells;

the field is used for indicating the indication information corresponding to the field of a specific serving cell in at least two second serving cells;

this field is used for an indication of a specific message of at least one of the at least two second serving cells.

Optionally, the specific serving cell includes at least one of:

and the serving cell meets a fourth preset condition.

Optionally, for any one of the RMI field, the ZCRT field, the AP field, the MCS field, the NDI field, or the RV field, if the number of the fields included in the specific DCI is less than the number of the second serving cells, the field is used for information indication of each second serving cell, and at least one of the fields is used for jointly indicating information corresponding to the fields of at least two second serving cells.

An embodiment of the present application further provides an apparatus for receiving downlink data, where the apparatus includes at least one processor configured to:

receiving DCI on a serving cell;

receiving data transmitted by a PDSCH of at least one serving cell scheduled by the DCI according to the specific DCI.

Optionally, the at least one processor may be configured to:

Optionally, when the DCI with the predetermined format includes PDSCH information of at least two serving cells, and when receiving data transmitted by a PDSCH of at least one serving cell scheduled according to the DCI, the at least one processor may be configured to:

Optionally, the at least one processor is further configured to:

and transmitting HARQ-ACK information corresponding to PDSCHs of at least two serving cells.

Optionally, when receiving data transmitted by the PDSCH of the at least one serving cell scheduled by the DCI according to the DCI, the at least one processor may be configured to:

Optionally, when receiving data transmitted by PDSCHs of at least two serving cells scheduled by the DCI, the at least one processor may be configured to:

determining a serving cell indicated by each indication field of the DCI;

Optionally, when determining the serving cell indicated by each indication field of the DCI, the at least one processor may be configured to:

Optionally, for any indication field in the DCI, when one of the indication fields is used to indicate at least two serving cells, and when determining an indication of the indication field corresponding to each serving cell in the DCI, the at least one processor may be configured to:

An embodiment of the present application further provides an apparatus for detecting a physical downlink control channel PDCCH, where the apparatus includes at least one processor, and the at least one processor is configured to:

Optionally, the detection information includes the number of PDCCH candidates to be detected and/or the number of non-overlapping Control Channel Elements (CCEs);

the PDCCH candidate is a first PDCCH candidate for scheduling a Physical Downlink Shared Channel (PDSCH) of the first serving cell or a second PDCCH candidate for scheduling a Physical Uplink Shared Channel (PUSCH) of the first serving cell;

a first total number, which is a total number of PDCCH candidates and/or a total number of non-overlapping CCEs used for scheduling a first serving cell;

detection capability configuration information of the first serving cell;

detection capability configuration information of the second serving cell;

subcarrier space SCS configuration information of the first service cell;

SCS configuration information of the second serving cell.

Optionally, the at least one processor is configured to:

determining maximum detection capability information;

Optionally, the at least one processor is configured to:

determining maximum detection capability information corresponding to the first serving cell and the second serving cell in response to the detection capability configuration information and the SCS configuration information of the first serving cell and the second serving cell being the same;

the at least one processor is configured for:

Optionally, the at least one processor is configured to:

acquiring detection priorities corresponding to the first serving cell and the second serving cell;

the at least one processor is configured for:

determining first maximum detection capability information corresponding to the first serving cell and second maximum detection capability information corresponding to the second serving cell;

the at least one processor is configured for:

determining the first detection information based on the second total number and the first maximum detection capability information;

determining the second detection information based on the third total and the second maximum detection capability information.

and/or the presence of a gas in the gas,

the number of the first DCI detected when the PDCCH detection is performed on the second serving cell is less than or equal to a sixth value.

It should be noted that, because the apparatus provided in the embodiment of the present invention is an apparatus capable of executing the method in the embodiment of the present invention, a specific implementation manner of the apparatus provided in the embodiment of the present invention and various modifications thereof can be understood by those skilled in the art based on the method provided in the embodiment of the present invention, and therefore, how to implement the method in the embodiment of the present invention by the apparatus is not described in detail herein. The apparatus used by those skilled in the art to implement the method of the embodiments of the present invention is within the scope of the present application.

Based on the same principle as the method provided by the embodiment of the present application, the embodiment of the present application further provides an electronic device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor can execute the method provided by any optional embodiment of the present application when running the computer program stored in the memory.

Embodiments of the present application further provide a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, may perform the method provided in any optional embodiment of the present application.

As an alternative, fig. 5 shows a schematic structural diagram of an electronic device (specifically, the user equipment or other devices that execute the scheme provided in the embodiment of the present application) provided in the embodiment of the present application, and as shown in fig. 5, the electronic device 4000 may include: a processor 4001 and a memory 4003. Processor 4001 is coupled to memory 4003, such as via bus 4002. Optionally, the electronic device 4000 may further comprise a transceiver 4004. In addition, the transceiver 4004 is not limited to one in practical applications, and the structure of the electronic device 4000 is not limited to the embodiment of the present application.

The Processor 4001 may be a CPU (Central Processing Unit), a general-purpose Processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor 4001 may also be a combination that performs a computational function, including, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, or the like.

Bus 4002 may include a path that carries information between the aforementioned components. The bus 4002 may be a PCI (Peripheral Component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, or the like. The bus 4002 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 5, but this is not intended to represent only one bus or type of bus.

The Memory 4003 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), a magnetic Disc storage medium or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these.

The memory 4003 is used for storing application codes for executing the scheme of the present application, and the execution is controlled by the processor 4001. Processor 4001 is configured to execute application code stored in memory 4003 to implement what is shown in any of the foregoing method embodiments.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A method for receiving downlink data, comprising:

receiving downlink control information DCI on a serving cell;

and receiving data transmitted by a Physical Downlink Shared Channel (PDSCH) of at least one service cell scheduled by the DCI according to the DCI.

2. The method of claim 1, wherein receiving the DCI on the first serving cell comprises:

receiving DCI of a predetermined format on the one serving cell, the DCI of the predetermined format being usable for scheduling PDSCHs of at least two serving cells.

3. The method of claim 2, wherein when the DCI of the predetermined format includes PDSCH information of at least two serving cells, the receiving data transmitted by a PDSCH of at least one serving cell scheduled by the DCI according to the DCI comprises:

4. The method of any of claims 1 to 3, wherein the receiving data transmitted by a PDSCH of at least one serving cell scheduled by the DCI according to the DCI comprises:

determining, according to an indication of a predetermined field in the DCI, that the DCI is used for scheduling PDSCHs of at least two serving cells;

5. The method of claim 4, wherein the receiving data transmitted by PDSCHs of at least two serving cells scheduled by the DCI comprises:

determining a serving cell indicated by each indication field of the DCI;

determining an indication of an indication field in the DCI corresponding to each serving cell;

6. A method for configuring downlink control information is characterized by comprising the following steps:

configuring first Downlink Control Information (DCI) of a format, wherein the first DCI is used for scheduling a Physical Downlink Shared Channel (PDSCH) of at least one second serving cell on one first serving cell.

7. The method of claim 6, wherein a number of bits of the first DCI satisfies at least one of:

the bit number of the first DCI is equal to a specified bit number;

the number of bits of the first DCI is equal to the number of bits of an existing first DCI of the first serving cell;

the bit number of the first DCI is equal to the bit number of a second designated DCI existing in any one of the at least one second serving cell;

when the first DCI is used for scheduling PDSCH of at least two second serving cells, the bit number of the first DCI is equal to the bit number of a third designated DCI meeting a first preset condition in existing third designated DCI of each serving cell of the at least two second serving cells;

when the first DCI is used for scheduling PDSCH of at least two second serving cells, the bit number of the first DCI is equal to the bit number of an existing fourth designated DCI of a serving cell satisfying a second preset condition among the at least two second serving cells.

8. The method of claim 7, wherein when the first DCI is used for scheduling PDSCH of at least two second serving cells and the number of bits of the first DCI is equal to the number of bits of a second specific DCI existing in any one of the at least one second serving cell, the method further comprises:

if the bit number of the second designated DCI of each of the at least two second serving cells is not completely the same, configuring a field included in the first DCI based on a field included in the second designated DCI which is equal to the bit number of the first DCI;

if the bit number of the second specific DCI of each of the at least two second serving cells is the same, the field included in the first DCI is configured based on the field included in the second specific DCI of the serving cell satisfying a third preset condition among the at least two second serving cells.

9. A method for detecting a Physical Downlink Control Channel (PDCCH) is characterized by comprising the following steps:

10. The method of claim 9, wherein the detection information for the PDCCH candidate scheduling the first serving cell is determined according to at least one of:

detection capability configuration information of the first serving cell;

detection capability configuration information of the second serving cell;

subcarrier space SCS configuration information of the first serving cell;

SCS configuration information of the second serving cell.

11. An apparatus for receiving downlink data, comprising at least one processor configured to:

receiving downlink control information DCI on a serving cell;

12. An apparatus for configuring downlink control information, comprising at least one processor configured to:

configuring first DCI of a format, wherein the first DCI is used for scheduling a Physical Downlink Shared Channel (PDSCH) of at least one second serving cell on one first serving cell.

13. An apparatus for detecting a Physical Downlink Control Channel (PDCCH), comprising at least one processor configured to:

14. An electronic device, comprising a memory and a processor;

the memory has stored therein a computer program;

the processor is configured to perform the method of any one of claims 1 to 5, or any one of claims 6 to 8, or any one of claims 9 to 10 when running the computer program.

15. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, is adapted to carry out the method of any one of claims 1 to 5, or of any one of claims 6 to 8, or of any one of claims 9 to 10.