Blind detection method of pdcch candidate, user equipment, electronic device and storage medium

Abstract

Embodiments of the present application provide a blind detection method of a physical downlink control channel (PDCCH) candidate, a user equipment, an electronic device and a storage medium. The method comprises: determining a resource position of a serving cell used for transmitting a PDCCH candidate corresponding to a primary cell (PCell), wherein the serving cell comprises the PCell and / or a secondary cell (SCell); and blindly detecting the PDCCH candidate corresponding to the PCell on the determined resource position of the serving cell. According to the scheme of the embodiments of the present application, the allocation of resources occupied by the PDCCH can be more reasonable and effective in a carrier aggregation system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and in particular, relates to a blind detection method of a physical downlink control channel (PDCCH) candidate, a user equipment, an electronic device and a storage medium. BACKGROUND

[0002] In a long-term evolution (LTE) system, the transmission of a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH) is scheduled by a downlink control information (DCI) transmitted by a physical downlink control channel (PDCCH). A search space for transmitting the DCI includes a common search space (CSS) set and a user equipment (UE)-specific search space (USS) set. For the CSS, any UE can demodulate and decode, while for the USS, only specific UEs can demodulate and decode. The format of the DCI can be divided into a DCI format for scheduling the PDSCH (for example, DCI format 1-0 and DCI format 1-1) and a DCI format for scheduling the PUSCH (for example, DCI format 0-0 and DCI format 0-1). The format of the DCI can also be divided into a fallback DCI format (for example, DCI format 0-0 and DCI format 1-0) and a non-fallback DCI format (for example, DCI format 0-1 and DCI format 1-1). The number of information bits (referred to as bit number for short) contained in (for example, configured or required, etc.) the DCI of different formats can be the same or different. The number of bits contained in (for example, configured or required, etc.) the DCI with a specific DCI format can be referred to as the bit number of the specific DCI format.

[0003] The PDCCH scheduling PDSCH and PUSCH can be located in a same serving cell as the scheduled PDSCH and PUSCH, which is referred to as same-carrier scheduling, or the PDCCH scheduling PDSCH and PUSCH can be located in different serving cells, which is referred to as cross-carrier scheduling, wherein the cell transmitting the PDCCH is referred to as a scheduling serving cell, and the serving cell transmitting the PDSCH / PUSCH is referred to as a scheduled serving cell. In a carrier aggregation (CA) system, the serving cells can include a primary cell (Pcell) and a secondary cell (Scell), and the subcarrier space configurations of the Pcell and the Scell can be the same or different. When the Pcell and the Scell exist, how to more reasonably allocate the cell resources occupied by the PDCCH is also an important problem to be improved. SUMMARY

[0004] The present application aims to provide a PDCCH candidate blind detection method, user equipment, electronic equipment and storage medium, based on the scheme, the configuration of the PDCCH occupied resources can be more reasonable and effective.

[0005] In a first aspect, the embodiments of the present application provide a PDCCH candidate blind detection method, comprising:

[0006] determining a resource location of a serving cell used for transmitting a PDCCH candidate corresponding to a Pcell, the serving cell including the Pcell and / or a Scell;

[0007] blindly detecting the PDCCH candidate corresponding to the Pcell at the determined resource location of the serving cell.

[0008] Optionally, the determining the resource location of the serving cell used for transmitting the PDCCH candidate corresponding to the Pcell comprises at least one of the following:

[0009] determining the resource location as at least one of a CSS set and a USS set of the Pcell, and at least one of a CSS set and a USS set of the Scell;

[0010] determining the resource location as a CSS set and a USS set of the Scell;

[0011] obtaining first indication information, and determining the resource location according to the first indication information.

[0012] Optionally, the determining the resource location as at least one of a CSS set and a USS set of the Pcell, and at least one of a CSS set and a USS set of the Scell comprises at least one of the following:

[0013] determining the resource location as a CSS set of a Pcell and a USS set of a Scell;

[0014] determining the resource location as a CSS set and a USS set of a Pcell and a CSS set and a USS set of a Scell.

[0015] Optionally, the PDCCH candidates corresponding to the Pcell include a first PDCCH candidate for scheduling a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH) transmitted in the Pcell, and / or a second PDCCH candidate not for scheduling the PDSCH or the PUSCH transmitted in the Pcell.

[0016] Optionally, when the resource location is the CSS set of the Pcell and the USS set of the Scell, blind detection of the PDCCH candidates corresponding to the Pcell is performed in the CSS set of the Pcell and in the USS set of the Scell, including any one of the following:

[0017] blind detection of the first PDCCH candidate and the second PDCCH candidate in the CSS set of the Pcell; and blind detection of the first PDCCH candidate in the USS set of the Scell;

[0018] blind detection of the first PDCCH candidate in the CSS set of the Pcell, blind detection of the second PDCCH candidate in the CSS set of the Scell, and blind detection of the first PDCCH candidate in the USS set of the Scell.

[0019] Optionally, when the resource location is at least one of the CSS set and the USS set of the Pcell and at least one of the CSS set and the USS set of the Scell, blind detection of the PDCCH candidates corresponding to the Pcell is performed at the determined resource location of the serving cell, including:

[0020] blind detection of a first part of the PDCCH candidates corresponding to the Pcell in at least one of the CSS set and the USS set of the Pcell;

[0021] blind detection of a second part of the PDCCH candidates corresponding to the Pcell in at least one of the CSS set and the USS set of the Scell;

[0022] The first part of the PDCCH candidates includes at least one of the first PDCCH candidates and / or at least one of the second PDCCH candidates, and the second part of the PDCCH candidates includes at least one of the first PDCCH candidates and / or at least one of the second PDCCH candidates.

[0023] Optionally, the method further includes:

[0024] Obtaining second indication information;

[0025] Determining the first part of the PDCCH candidates and / or the second part of the PDCCH candidates according to the second indication information.

[0026] Optionally, the first indication information includes at least one of:

[0027] Information for indicating that the first PDCCH candidates are transmitted in the CSS set of the Pcell and / or in the CSS set of the Scell;

[0028] Information for indicating that the second PDCCH candidates are transmitted in the CSS set of the Pcell and / or in the CSS set of the Scell;

[0029] Information for indicating that the first PDCCH candidates are transmitted in the USS set of the Pcell and / or in the USS set of the Scell.

[0030] Optionally, the method further includes:

[0031] Obtaining the maximum number of PDCCH candidate blind detection corresponding to the serving cell and / or the maximum number of non-overlapping control channel elements (CCEs) for PDCCH candidate blind detection in the serving cell.

[0032] Optionally, obtaining the maximum number of PDCCH candidate blind detection corresponding to the serving cell and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the serving cell includes at least one of:

[0033] Determining the maximum number of PDCCH candidate blind detection corresponding to the serving cell and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the serving cell according to the number of serving cells supporting PDCCH candidate blind detection by the UE and the number of serving cells configured for the UE;

[0034] Obtaining third indication information, and determining the maximum number of PDCCH candidate blind detection corresponding to the serving cell and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the serving cell according to the third indication information.

[0035] Optionally, according to the number of serving cells that the UE supports PDCCH candidate blind detection, and the number of serving cells that the UE is configured, the maximum PDCCH candidate blind detection number corresponding to the serving cell is determined, and / or the maximum non-overlapping CCE number for PDCCH candidate blind detection in the serving cell is determined, including at least one of the following:

[0036] If the number of serving cells that the UE is configured is less than or equal to the number of serving cells that the UE supports PDCCH candidate blind detection, according to the subcarrier space configuration of each serving cell that the UE is configured, the maximum PDCCH candidate blind detection number corresponding to each serving cell that the UE is configured is determined, and / or the maximum non-overlapping CCE number for PDCCH candidate blind detection in each serving cell that the UE is configured is determined;

[0037] If the number of serving cells that the UE is configured is greater than the number of serving cells that the UE supports PDCCH candidate blind detection, according to the number of cells for transmitting PDCCH candidates of Pcell in the serving cells that the UE is configured, and the number of cells for transmitting PDCCH candidates that are not Pcell, the number of serving cells that the UE supports PDCCH candidate blind detection, and the subcarrier space configuration of each serving cell that the UE is configured, the sum of the maximum PDCCH candidate blind detection numbers corresponding to all serving cells corresponding to each subcarrier space configuration that the UE is configured is determined, and / or the sum of the maximum non-overlapping CCE numbers for PDCCH candidate blind detection in all serving cells corresponding to each subcarrier space configuration that the UE is configured is determined.

[0038] Optionally, according to the number of cells for transmitting PDCCH candidates of Pcell in the serving cells that the UE is configured, and the number of cells for transmitting PDCCH candidates that are not Pcell, the number of serving cells that the UE supports PDCCH candidate blind detection, and the subcarrier space configuration of each serving cell that the UE is configured, the sum of the maximum PDCCH candidate blind detection numbers corresponding to all serving cells corresponding to each subcarrier space configuration that the UE is configured is determined, including:

[0039] The sum of the maximum PDCCH candidate blind detection numbers corresponding to all serving cells corresponding to each subcarrier space configuration that the UE is configured is determined according to the following formula:

[0040]

[0041] Wherein, represents the sum of the maximum PDCCH candidate blind detection numbers corresponding to all serving cells that the UE is configured with the subcarrier space configuration μ i represents the number of serving cells that the UE supports PDCCH candidate blind detection, ​NmaxPDCCHBlindDetectionPerSCSConfigμ i NmaxPDCCHBlindDetectionPerSCSConfigμ NmaxPDCCHBlindDetectionPerSCSConfigμ i NmaxPDCCHBlindDetectionPerSCSConfigμ NmaxPDCCHBlindDetectionPerSCSConfigμ NmaxPDCCHBlindDetectionPerSCSConfigμ NmaxPDCCHBlindDetectionPerSCSConfigμ NmaxPDCCHBlindDetectionPerSCSConfigμ

[0042] NmaxPDCCHBlindDetectionPerSCSConfigμ

[0043] NmaxPDCCHBlindDetectionPerSCSConfigμ

[0044]

[0045] NmaxPDCCHBlindDetectionPerSCSConfigμ NmaxPDCCHBlindDetectionPerSCSConfigμ i NmaxPDCCHBlindDetectionPerSCSConfigμ NmaxPDCCHBlindDetectionPerSCSConfigμ i NmaxPDCCHBlindDetectionPerSCSConfigμ

[0046] NmaxPDCCHBlindDetectionPerSCSConfigμ

[0047] Optionally, alpha and beta satisfy:

[0048] 0 < alpha≤ 1, 0 < beta≤ 1.

[0049] Optionally, alpha and beta are determined by at least one of the following ways:

[0050] alpha and / or beta are predetermined values;

[0051] information for indicating alpha and / or beta is received, and alpha and / or beta are determined based on the information;

[0052] alpha is determined according to a predetermined calculation manner, and beta is determined based on a predetermined relationship between alpha and beta.

[0053] alpha and / or beta are determined according to a predetermined calculation manner.

[0054] Optionally, for a serving cell, if the serving cell is a Scell of at least one first UE and is a Pcell of at least one second UE, and a PDCCH candidate for scheduling a PDSCH transmitted on the Pcell of the first UE and a PDCCH candidate for scheduling a PDSCH transmitted on the Pcell of the second UE are both the serving cell, the PDCCH candidate for scheduling the PDSCH transmitted on the Pcell of the first UE and the PDCCH candidate for scheduling the PDSCH transmitted on the Pcell of the second UE satisfy at least one of the following:

[0055] bit numbers of the two are different;

[0056] the two use different radio network temporary identifiers (RNTIs) to scramble cyclic redundancy checks (CRCs);

[0057] time-frequency locations of CSS sets in which the two are located do not coincide.

[0058] In a second aspect, an embodiment of the present application provides a user equipment, which comprises:

[0059] a first processing module configured to determine a resource location of a serving cell for transmitting a PDCCH candidate corresponding to a Pcell, the serving cell comprising the Pcell and / or a Scell;

[0060] a second processing module configured to blindly detect the PDCCH candidate corresponding to the Pcell on the determined resource location of the serving cell.

[0061] In a third aspect, an embodiment of the present application provides an electronic device, which comprises a processor; and

[0062] a memory configured to store machine readable instructions that, when executed by the processor, cause the processor to perform the method for blind detection of PDCCH candidates in the first aspect.

[0063] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium storing a computer program, the computer program being used to perform the method for blind detection of PDCCH candidates in the first aspect of the present application.

[0064] The technical solutions provided by the embodiments of the present application have at least the following beneficial effects:

[0065] The method for blind detection of PDCCH candidates provided by the embodiments of the present application can include: determining a resource location of a serving cell used for transmitting PDCCH candidates corresponding to a Pcell, the serving cell including the Pcell and / or a Scell; and blindly detecting the PDCCH candidates corresponding to the Pcell on the determined resource location of the serving cell. Based on the method, the configuration of the resources occupied by the PDCCH can be more reasonable and effective.

[0066] Additional aspects and advantages of the present application will be given in part in the following description, which will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0067] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced.

[0068] Figure 1 A flowchart of a method for blind detection of PDCCH candidates provided by an embodiment of the present application is shown;

[0069] Figure 2 A schematic diagram of blind detection of PDCCH candidates provided by an embodiment of the present application is shown;

[0070] Figure 3 A schematic diagram of blind detection of PDCCH candidates provided by an embodiment of the present application is shown;

[0071] Figure 4 A schematic diagram of blind detection of PDCCH candidates provided by an embodiment of the present application is shown;

[0072] Figure 5 A structural schematic diagram of a user equipment provided by an embodiment of the present application is shown;

[0073] Figure 6 A structural schematic diagram of an electronic device provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0074] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein like or similar elements are denoted by like or similar reference symbols throughout the drawings. The embodiments described below are exemplary only, and are not intended to limit the present application.

[0075] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It is further understood that the terms "comprising," "including," "containing," or "having" and the like, when used herein, mean "including but not limited to." It is still further understood that terms such as "connected," "coupled," or the like, mean any connection or coupling, either direct or indirect, between otherwise apparatus, devices, or means, and can encompass the presence of one or more intermediate

[0076] In order to better understand and illustrate the scheme of the embodiments of the present application, some technologies involved in the embodiments of the present application are briefly described below.

[0077] P-RNTI: represents Paging RNTI (Radio Network Temporary Indicator), used for parsing paging information, corresponding to the PCCH of the paging;

[0078] SI-RNTI: represents System Information RNTI, used for transmission of SIB information (i.e. system information), corresponding to the BCCH;

[0079] RA-RNTI: represents Radom Access RNTI, used for PRACH response, corresponding to the DL-SCH of the RACH Response;

[0080] C-RNTI: represents Cell RNTI, used for transmission of UE service information;

[0081] T-CRNTI: represents Temporary C-RNTI, mainly used in RACH, corresponding to the Random Access Response Grant in PUSCH, message 3 of the random access process;

[0082] SPS-C-RNTI: Semi persistence Scheduling C-RNTI, C-RNTI for semi-persistent scheduling PDSCH transmission;

[0083] TPC-PUCCH-RNTI: Transmit Power Control-Physical Uplink Control Channel-RNTI, used for parsing PUCCH uplink power control information;

[0084] TPC-PUSCH-RNTI: Transmit Power Control-Physical Uplink Shared Channel-RNTI, used for parsing PUSCH uplink power control information;

[0085] M-RNTI: Multimedia Broadcast Multicast Service RNTI.

[0086] UE blind detection of PDCCH candidates transmitted in CSS set, PDCCH candidates include PDCCH candidates with cyclic redundancy check (CRC) scrambled by different RNTIs, for example, PDCCH candidates with CRC scrambled by SI-RNTI, P-RNTI, RA-RNTI, TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, etc. PDCCH candidates with CRC scrambled by C-RNTI, etc. UE blind detection of PDCCH candidates transmitted in USS, including PDCCH candidates with CRC scrambled by different RNTIs, for example, PDCCH candidates with CRC scrambled by C-RNTI, etc.

[0087] The enumerated PDCCH candidates (which can also include other un-enumerated PDCCH candidates) can be divided into two categories. One category is PDCCH candidates for scheduling PDSCH and / or PUSCH of a serving cell, such as PDCCH candidates scrambled with SI-RNTI, P-RNTI, and RA-RNTI. The other category is PDCCH candidates that are not for scheduling PDSCH and PUSCH of the serving cell, such as the PDCCH candidate scrambled with TPC-PUCCH-RNTI, which is for power control of PUCCH (Physical Uplink Control Channel) transmission of the serving cell, and the PDCCH candidate scrambled with TPC-PUSCH-RNTI, which is for power control of PUSCH transmission of the serving cell. In addition to the PDCCH candidates for power control, the PDCCH candidates that are not for scheduling PDSCH or PUSCH can also include other PDCCH candidates.

[0088] In the embodiments of the present application, for the convenience of description, the PDCCH candidates that are not for scheduling PDSCH or PUSCH of the serving cell are referred to as second PDCCH candidates, which include but are not limited to the PDCCH candidates for power control, and the PDCCH candidates for scheduling PDSCH or PUSCH of the serving cell are referred to as first PDCCH candidates, i.e., the first PDCCH candidates can be at least one of the PDCCH candidates scrambled with P-RNTI, the PDCCH candidates scrambled with SI-RNTI, the PDCCH candidates scrambled with C-RNTI, etc., and the second PDCCH candidates include but are not limited to at least one of the PDCCH candidates scrambled with TPC-PUCCH-RNTI and the PDCCH candidates scrambled with TPC-PUSCH-RNTI. In the following description, the processing of the second PDCCH candidates will be described by taking the PDCCH candidates for power control as an example.

[0089] In a carrier aggregation (CA) system, there are Pcell and Scell, and the subcarrier space configurations of the Pcell and the Scell can be the same or different. In order to reduce the PDCCH occupation of Pcell resources, in the scheme provided in the embodiments of the present application, the PDSCH or PUSCH transmitted by the Pcell can be scheduled by the PDCCH transmitted by the Scell, and the scheme provided in the embodiments of the present application can achieve more reasonable and effective configuration of the resources occupied by the PDCCH.

[0090] In the scheme provided by the embodiments of the present application, the PDCCH candidate of the Pcell (i.e. the PDCCH candidate for scheduling the PDSCH or PUSCH transmitted in the Pcell, or the PDCCH candidate not for scheduling the PDSCH or PUSCH transmitted in the Pcell) is not necessarily transmitted on the Pcell, i.e. it can be transmitted on the Pcell or can be transmitted in the Scell.

[0091] For the purpose, technical solutions and advantages of the present application to be clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0092] In the embodiments of the present application, a blind detection method of PDCCH candidate is provided, which can be specifically implemented by a user equipment (UE, User Equipment), and a flowchart of the method is shown in Figure 1 The method can include the following steps.

[0093] In step S101, the resource position of the serving cell used for transmitting the PDCCH candidate corresponding to the Pcell is determined, and the serving cell includes the Pcell and / or the Scell.

[0094] In step S102, the PDCCH candidate corresponding to the Pcell is blindly detected on the determined resource position of the serving cell.

[0095] The PDCCH candidate corresponding to the Pcell includes the first PDCCH candidate for scheduling the PDSCH or PUSCH transmitted in the Pcell, and / or the second PDCCH candidate not for scheduling the PDSCH or PUSCH transmitted in the Pcell (including the PDCCH candidate for power control of the PUCCH and / or PUSCH transmitted in the Pcell and other PDCCH candidates not for scheduling the PDSCH or PUSCH). That is, the PDCCH candidate corresponding to the Pcell described in the embodiments of the present application refers to the PDCCH candidate for scheduling the Pcell, i.e. the DCI transmitted through the PDCCH candidate is for the Pcell.

[0096] As can be known from the foregoing description, the first PDCCH candidate can include one or more of a PDCCH candidate scrambled with SI-RNTI cyclic redundancy check (CRC), a PDCCH candidate scrambled with P-RNTI CRC, a PDCCH candidate scrambled with RA-RNTI CRC, a PDCCH candidate scrambled with C-RNTI CRC, a PDCCH candidate scrambled with T-CRNTI CRC, and the like, and the second PDCCH candidate can be a PDCCH candidate scrambled with TPC-PUSCH-RNTI CRC and / or a PDCCH candidate scrambled with TPC-PUCCH-RNTI CRC.

[0097] Based on the scheme provided in the embodiments of the present application, the PDCCH candidate of the Pcell, i.e., the PDCCH candidate corresponding to the Pcell, can be transmitted on the Pcell and / or the Scell, i.e., can be transmitted on the Pcell or can be transmitted on the Scell, so that based on the scheme, the configuration of the cell resources occupied by the PDCCH can be more reasonably and effectively implemented.

[0098] In optional embodiments of the present application, the determination of the resource location of the serving cell for transmitting the PDCCH candidate corresponding to the Pcell can specifically include at least one of the following:

[0099] The first one is that the resource location of the serving cell for transmitting the PDCCH candidate corresponding to the Pcell is determined as at least one of the CSS set and the USS set of the Pcell and at least one of the CSS set and the USS set of the Scell.

[0100] The second one is that the resource location of the serving cell for transmitting the PDCCH candidate corresponding to the Pcell is determined as the CSS set and the USS set of the Scell.

[0101] The third one is that first indication information is acquired, and the resource location of the serving cell for transmitting the PDCCH candidate corresponding to the Pcell is determined according to the first indication information.

[0102] Optionally, for the first one, the determination of the resource location as at least one of the CSS set and the specific search space (USS) set of the Pcell and at least one of the CSS set and the USS set of the Scell can include at least one of the following:

[0103] The first one is that the resource location is determined as the CSS set of the Pcell and the USS set of the Scell.

[0104] The second one is that the resource location is determined as the CSS set and the USS set of the Pcell and the CSS set and the USS set of the Scell.

[0105] Optionally, for the first item above, when performing blind detection of PDCCH candidates, specifically, blind detecting PDCCH candidates corresponding to Pcell in CSS set of Pcell, and blind detecting PDCCH candidates corresponding to Pcell in USS set of Scell, the method can include any of the following:

[0106] blind detecting a first PDCCH candidate and a second PDCCH candidate in CSS set of Pcell; blind detecting the first PDCCH candidate in USS set of Scell;

[0107] blind detecting a first PDCCH candidate in CSS set of Pcell, blind detecting a second PDCCH candidate in CSS set of Scell, and blind detecting the first PDCCH candidate in USS set of Scell.

[0108] That is, the CSS set used for scheduling PDSCH or PUSCH transmitted in Pcell (i.e. corresponding to the first PDCCH candidate) can be in Pcell, and the PDCCH in CSS set of Pcell schedules PDSCH or PUSCH in the same carrier. Since the system message, paging message and the like transmitted in Pcell are common to all UEs in the cell, if the PDCCH candidates corresponding to these messages (such as PDCCH candidates scrambled with SI-RNTI) are transmitted in Pcell, these PDCCH candidates are transmitted once, which can effectively save the resources of Pcell occupied by PDCCH candidates. As for the second PDCCH candidate, it can be transmitted in Pcell or in Scell. In addition, since the PDCCH candidate in USS set is for a specific UE, and is not common to all UEs in the cell, the PDCCH candidate for scheduling PDSCH or PUSCH transmitted in Pcell can be transmitted in USS set of Scell to save the resources of Pcell.

[0109] Optionally, for the second item above, when the resource location is at least one of CSS set and USS set of Pcell, and at least one of CSS set and USS set of Scell, blind detecting PDCCH candidates corresponding to Pcell in the resource location of the determined serving cell can include:

[0110] blind detecting a first part of PDCCH candidates corresponding to Pcell in at least one of CSS set and USS set of Pcell;

[0111] blind detection of a second part of PDCCH candidates in the PDCCH candidates corresponding to the Pcell in at least one of the CSS set and the USS set of the Scell;

[0112] wherein the first part of PDCCH candidates comprises at least one of the first PDCCH candidates and / or at least one of the second PDCCH candidates, and the second part of PDCCH candidates comprises at least one of the first PDCCH candidates and / or at least one of the second PDCCH candidates.

[0113] In this optional solution, the PDCCH candidates of the Pcell can be divided into two parts, one part of the PDCCH candidates of the Pcell is blindly detected in the Pcell, this part is referred to as the first part of PDCCH candidates, and optionally, the first part of PDCCH candidates can comprise at least one of the first PDCCH candidates blindly detected in the CSS set, at least one of the second PDCCH candidates blindly detected in the CSS set, and at least one of the first PDCCH candidates blindly detected in the USS set, wherein the UE can determine which one or ones belong to the first part of PDCCH candidates through receiving signaling or protocol preset.

[0114] The other part of the PDCCH candidates of the Pcell can be blindly detected in the Scell, this part is referred to as the second part of PDCCH candidates, for example, the second part of PDCCH candidates can comprise at least one of the first PDCCH candidates blindly detected in the CSS set, at least one of the second PDCCH candidates blindly detected in the CSS set, and at least one of the first PDCCH candidates blindly detected in the USS set, and the UE can determine which one or ones belong to the second part of PDCCH candidates through receiving signaling or protocol preset.

[0115] It should be noted that the first part of PDCCH candidates and the second part of PDCCH candidates described above can contain the same PDCCH candidates or different PDCCH candidates.

[0116] Optionally, the method can further comprise:

[0117] obtaining second indication information;

[0118] determining the first part of PDCCH candidates and / or the second part of PDCCH candidates according to the second indication information.

[0119] Optionally, the UE can determine which PDCCH candidates are transmitted in the Pcell and which are transmitted in the Scell according to the first indication information. Wherein the manner in which the UE obtains the second indication information is not limited by the embodiments of the application, for example, the indication information can be agreed by the communication protocol, or the UE can obtain the indication information by receiving the signaling sent by the base station.

[0120] Optionally, for the third item of the method above, the indication information can include at least one of the following:

[0121] information for indicating that the first PDCCH candidate is transmitted in the CSS set of the Pcell and / or in the CSS set of the Scell;

[0122] information for indicating that the second PDCCH candidate is transmitted in the CSS set of the Pcell and / or in the CSS set of the Scell;

[0123] information for indicating that the first PDCCH candidate is transmitted in the USS set of the Pcell and / or in the USS set of the Scell.

[0124] That is, for the PDCCH candidate corresponding to the Pcell, the UE can determine its specific transmission mode according to the indication information. Optionally, the indication information can be high layer signaling, and the UE can determine whether the PDCCH candidate is transmitted in the Pcell or in the Scell by analyzing the high layer signaling. Based on this mode, the base station can determine the mode to be used according to different needs and send the corresponding indication information to the UE. Alternatively, the indication information can also be a protocol preset, and the UE can determine its specific transmission mode according to the protocol preset.

[0125] In the embodiments of the present application, for the first item of the method above, when the UE blindly detects / monitors the PDCCH candidate, it can blindly detect the PDCCH candidate in the CSS set of the Pcell and blindly detect the PDCCH candidate in the USS set of the Scell, so as to reduce the occupation of the Pcell resources by the PDCCH transmitted in the USS set, and the PDCCH for scheduling the PDSCH or PUSCH transmitted in the USS set can also be transmitted in the Scell, which can save the Pcell resources occupied by the PDCCH.

[0126] For the second item of the method above, all the PDCCH candidates corresponding to the Pcell can be transmitted in the Scell. By using this method, the Pcell resources occupied by the PDCCH can be greatly saved, and the number of blind detection of the PDCCH candidate can also not be increased.

[0127] For the third item of the method, the UE can determine whether the PDCCH candidate corresponding to the Pcell is transmitted in the Pcell or in the Scell based on the received indication information, that is, based on the UE can be indicated by the obtained high-layer signaling configuration. The method provides flexibility in saving Pcell resources and reducing the number of PDCCH candidate blind detection, and the base station can determine to use different PDCCH candidate transmission modes according to different needs.

[0128] In an optional embodiment of the present application, the method can further include:

[0129] Obtaining the maximum number of PDCCH candidate blind detections corresponding to the serving cell, and / or the maximum number of non-overlapping control channel elements (CCEs) for PDCCH candidate blind detection in the serving cell.

[0130] Specifically, since the PDCCH candidate corresponding to the Pcell can be transmitted in both the Pcell and the Scell, that is, the first PDCCH candidate for scheduling the PDSCH or PUSCH transmitted in the Pcell, and / or the second PDCCH candidate for power control of the PUCCH and / or PUSCH in the Pcell, can be transmitted in two or more different serving cells, and since different PDCCHs correspond to different maximum blind detection capabilities, for this mode, the UE also needs to obtain the maximum number of PDCCH candidate blind detections corresponding to the Pcell and the Scell, respectively, and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the Pcell and the Scell, so that the UE can perform blind detection in the search space of the Pcell and the Scell within the range of its own maximum blind detection capability.

[0131] In an optional embodiment of the present application, obtaining the maximum number of PDCCH candidate blind detections corresponding to the serving cell, and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the serving cell includes at least one of:

[0132] Determining the maximum number of PDCCH candidate blind detections corresponding to the serving cell, and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the serving cell according to the number of serving cells supporting PDCCH candidate blind detection by the user equipment (UE) and the number of serving cells configured for the UE;

[0133] Obtaining third indication information, and determining the maximum number of PDCCH candidate blind detections corresponding to the serving cell, and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the serving cell according to the third indication information.

[0134] That is, the maximum PDCCH candidate blind detection number and / or the maximum non-overlapping CCE number for PDCCH candidate blind detection can be determined by the UE according to the indication information obtained from the base station or calculated by the UE. The indication information can be explicit information or implicit information. In addition, the indication information can also be information agreed by the protocol.

[0135] Optionally, the maximum PDCCH candidate blind detection number corresponding to each service cell and / or the maximum non-overlapping CCE number for PDCCH candidate blind detection in each service cell is determined according to at least one of the following:

[0136] If the number of service cells configured for the UE is less than or equal to the number of service cells supported by the UE for PDCCH candidate blind detection, the maximum PDCCH candidate blind detection number corresponding to each service cell configured for the UE and / or the maximum non-overlapping CCE number for PDCCH candidate blind detection in each service cell configured for the UE is determined according to the subcarrier space configuration of each service cell configured for the UE.

[0137] If the number of service cells configured for the UE is greater than the number of service cells supported by the UE for PDCCH candidate blind detection, the sum of the maximum PDCCH candidate blind detection numbers corresponding to all service cells corresponding to each subcarrier space configuration configured for the UE and / or the sum of the maximum non-overlapping CCE numbers for PDCCH candidate blind detection in all service cells corresponding to each subcarrier space configuration configured for the UE is determined according to the number of cells used to transmit PDCCH candidates for Pcell and the number of cells used to transmit PDCCH candidates for cells other than Pcell in the service cells configured for the UE, the number of service cells supported by the UE for PDCCH candidate blind detection, and the subcarrier space configuration of each service cell configured for the UE.

[0138] Optionally, the sum of the maximum PDCCH candidate blind detection numbers corresponding to all service cells corresponding to each subcarrier space configuration configured for the UE is determined according to the number of service cells configured for the UE (including the number of cells used to transmit PDCCH candidates for Pcell and the number of cells used to transmit PDCCH candidates for cells other than Pcell in the service cells configured for the UE), the number of service cells supported by the UE for PDCCH candidate blind detection, and the subcarrier space configuration of each service cell configured for the UE.

[0139] The sum of the maximum PDCCH candidate blind detection numbers corresponding to all service cells corresponding to each subcarrier space configuration configured for the UE is determined according to the following formula:

[0140]

[0141] wherein, denotes the subcarrier spacing configuration of the UE is μ i the sum of the maximum PDCCH candidate blind decoding times of all the serving cells of the UE, denotes the number of the serving cells of the UE supporting PDCCH candidate blind decoding, denotes the maximum PDCCH candidate blind decoding times supported by the UE in one serving cell with subcarrier spacing configuration μ i denotes the number of the serving cells of the UE configured with subcarrier spacing configuration μ i , and j denotes the subcarrier spacing configuration, denotes the number of the primary cells of the UE configured with PDCCH candidates for transmitting Pcell in the serving cells, and μ1 denotes the subcarrier spacing configuration of the primary cells, denotes the number of the secondary cells of the UE configured with PDCCH candidates for transmitting Pcell in the serving cells, denotes the number of the serving cells of the UE configured with PDCCH candidates for transmitting Pcell in the serving cells;

[0142] According to the number of the serving cells of the UE configured, the number of the serving cells of the UE supporting PDCCH candidate blind decoding, and the subcarrier spacing configuration of each serving cell of the UE configured, determining the sum of the maximum non-overlapping CCE numbers for PDCCH candidate blind decoding in all the serving cells corresponding to each subcarrier spacing configuration of the UE configured can comprise:

[0143] The sum of the maximum non-overlapping CCE numbers for PDCCH candidate blind decoding in all the serving cells corresponding to each subcarrier spacing configuration of the UE configured is determined according to the following formula:

[0144]

[0145] wherein, denotes the sum of the maximum non-overlapping CCE numbers for PDCCH candidate blind decoding in all the serving cells of the UE configured with subcarrier spacing configuration μ i denotes the maximum non-overlapping CCE number for PDCCH candidate blind decoding in one serving cell of the UE with subcarrier spacing configuration μ i

[0146] ​​​For better illustration of the above optional embodiments provided in the present application, the following is taken as an example for a UE, that is, the PDCCH candidates of a Pcell are transmitted in the Pcell and one Scell of the UE. That is, the PDCCH candidates corresponding to the Pcell are transmitted in the Pcell and one Scell. For the convenience of description, in the following examples, the Pcell is taken as one serving cell, for example, the Scell is taken as one serving cell, for example, wherein μ1 represents the subcarrier spacing configuration of the Pcell, and μ2 represents the subcarrier spacing configuration of the Scell.

[0147] For PDCCH blind detection, in order to ensure that the DCI blind detection complexity of the UE is not too large (for example, to ensure that the DCI blind detection complexity is lower than the maximum DCI blind detection complexity supported by the UE), the detection times of the PDCCH of each UE can be limited. For one serving cell, the maximum number of times of detecting PDCCHs with different sizes (i.e., the number of bits of DCI) of the UE in each time unit (such as one time slot) is related to the subcarrier spacing configuration μ of the PDCCH (different μ corresponds to different subcarrier spacing). Specifically, for each serving cell, the maximum number of times of detecting PDCCHs with different sizes in each time slot and the subcarrier spacing configuration μ of the PDCCH are shown in Table 1.

[0148] Table 1

[0149]

[0150] Table 2

[0151] In addition, the maximum number of times of detecting non-overlapping CCEs of the UE can also be limited. For one serving cell, the maximum number of times of detecting non-overlapping CCEs of the UE in each time unit (such as a time slot) or frequency domain unit (such as a span) is related to the subcarrier spacing configuration μ of the PDCCH. Specifically, for each serving cell, the maximum number of times of detecting non-overlapping CCEs in each time slot and the subcarrier spacing configuration μ of the PDCCH are shown in Table 2.

[0152]

[0153] The maximum number of times of detecting PDCCHs of the UE and the maximum number of times of detecting non-overlapping CCEs of the UE shown in the above Table 1 and Table 2 are determined in the case of configuring one serving cell for the UE.

[0154] In a CA or dual-connectivity (DC) communication system, a UE is configured with CA or DC, and the CA capability or DC capability of the UE supports a maximum of a predetermined number (e.g., 4) of downlink serving cells, and the UE can indicate (i.e., inform the base station) its capability of detecting PDCCHs by a parameter (e.g., pdcch-BlindDetectionCA) as follows: wherein The predetermined number can be equal to or less than the predetermined number. The base station can configure the UE with a number of serving cells, such as one primary cell and at least one secondary cell.

[0155] For the serving cells configured for the UE by the base station, if the number of the configured serving cells is less than or equal to i.e., the base station configures the UE with a number of downlink serving cells less than or equal to i.e., the base station configures the UE with a number of downlink serving cells less than or equal to wherein i.e., the number of serving cells configured for the UE by the base station, and j represents the subcarrier configuration, j = 1 representing μ = 1. As described above, the cells used for scheduling the Pcell can include two parts, i.e., and At this time, the formula can be changed to: The maximum number of detections of PDCCHs in each time slot of each downlink serving cell by the UE and the maximum number of detections of non-overlapping CCEs are determined according to the subcarrier space configuration μ of each downlink serving cell, respectively, i.e., the maximum number of detections of PDCCHs and the maximum number of detections of non-overlapping CCEs can be determined according to the predetermined correspondence between the subcarrier space configuration μ of each downlink serving cell and and in Table 1 and Table 2 above, respectively. and the maximum number of detections of non-overlapping CCEs The maximum number of detections of PDCCHs and the maximum number of detections of non-overlapping CCEs are determined in units of time slots, and the maximum number of detections of PDCCHs and the maximum number of detections of non-overlapping CCEs can also be determined in units of spans, which are described herein as an example.

[0156] For the serving cells configured for the UE by the base station, if the number of the configured serving cells is greater than i.e., the base station configures the UE with a number of downlink serving cells greater than i.e., the base station configures the UE with a number of downlink serving cells greater than For example, the base station configures three serving cells for the UE, and the subcarrier space configurations μ of the three serving cells are 0, 0 and 1 respectively. Then the number of serving cells with subcarrier space configuration 0 the number of serving cells with subcarrier space configuration 1 At this time, the maximum number of PDCCH blind detections of each time slot of the serving cells with subcarrier space configuration μ is the sum of

[0157]

[0158]

[0159] Correspondingly, the maximum number of non-overlapping CCE detections of each time slot of the serving cells with subcarrier space configuration μ is the sum of

[0160]

[0161] wherein represents the number of downlink serving cells with subcarrier space configuration μ configured for the UE, represents the number of downlink serving cells with subcarrier space configuration μ=j among the downlink serving cells configured for the UE, wherein The two parts of the Pcell included in the formula are and i.e. It can be understood that in the formula, and respectively represent the number of primary cells and the number of secondary cells used to transmit the PDCCH candidates corresponding to the primary cell of the UE, and in this example, the number of secondary cells used to transmit the PDCCH candidates corresponding to the primary cell of the UE is 1.

[0162] Through the above formula, the sum of the maximum PDCCH blind detection numbers of each time slot of the serving cells corresponding to each subcarrier space configuration and the sum of the maximum detection numbers of non-overlapping CCEs can be calculated respectively.

[0163] As an illustrative example, it is assumed that ​​The base station configures three serving cells for the UE, which are a primary cell Cell1 and two secondary cells Cell2 and Cell3. The subcarrier space configurations μ corresponding to Cell1, Cell2 and Cell3 are 0, 1 and 1 respectively. The serving cells for scheduling Cell1 are Cell1 and Cell2, i.e., the serving cells for transmitting the PDCCH candidates corresponding to Cell1 are Cell1 and Cell2. Cell2 is also used for transmitting the PDCCH candidates of Cell2 itself, and Cell3 is used for transmitting the PDCCH candidates of Cell3 itself. As an optional calculation method, the above formula is, (i.e., Cell2 and Cell3, both of which are also used for scheduling themselves). Then, the serving cells corresponding to μ = 0 for the primary cell Cell1 and the serving cells corresponding to μ = 1 for the two secondary cells Cell2 and Cell3 can be calculated respectively by the above formula.

[0164] In an optional embodiment of the present application, the serving cells for transmitting the PDCCH candidates corresponding to the Pcell include the Pcell and at least one Scell. If the resource location is the CSS set and / or the USS set of the serving cells, the Pcell is treated as alpha serving cells, and the at least one Scell is treated as beta serving cells.

[0165] That is, for the Pcell, if the PDCCH candidates for scheduling the Pcell are transmitted in the Pcell and the Scell at the same time, the number of the Pcells for scheduling the Pcell is taken as alpha, and the number of the Scells for scheduling the Pcell is taken as beta. If the at least one Scell is two secondary cells, the number of the two secondary cells is taken as beta.

[0166] As described above, the PDCCH candidates can be transmitted in the CSS set of a cell or in the USS set. The system resources occupied by the CSS set and the USS set are part of the system resources occupied by the cell. Therefore, the CSS set and the USS set can be taken as part of the cell, i.e., the CSS set and the USS set correspond to less than or equal to one serving cell.

[0167] Specifically, when this scheme is adopted, in the above formula for determining the maximum PDCCH candidate blind detection times and the maximum non-overlapping CCE number, it is assumed that the PDCCH candidates for scheduling the Pcell are transmitted in the CSS set of the Pcell and the USS set of one Scell, then ​​​Correspondingly, if transmitted in the USS set of the Pcell and the CSS set of the two Scells, wherein, and Corresponding to the two Scells, the subcarrier space configurations μ2 and μ3 of the two Scells can be the same or different.

[0168] For this scheme, as an illustrative example, it is assumed that The base station configures the UE with 3 serving cells, which are a primary cell Cell1 and two secondary cells Cell2 and Cell3, the subcarrier space configurations μ of Cell1, Cell2 and Cell3 corresponding thereto are 0, 1 and 1 respectively, the serving cells scheduling Cell1 are Cell1 and Cell2, i.e. the serving cells used for transmission of PDCCH candidates corresponding to Cell1 are Cell1 and Cell2, Cell2 is also used for transmission of PDCCH candidates of Cell2 itself, and Cell3 is used for transmission of PDCCH candidates of Cell3 itself. As an optional calculation manner, assuming that alpha = 0.5 and beta = 0.8, in the above formula for calculating the sum of the maximum PDCCH candidate blind detection times and the sum of the maximum CCE numbers, (i.e. Cell2 and Cell3, both of which are also used for scheduling themselves), Then the above formula can be used to calculate the maximum PDCCH candidate blind detection times corresponding to the primary cell with μ = 0, and and the maximum PDCCH candidate blind detection times corresponding to the two serving cells with μ = 1, and

[0169] In an optional embodiment, assuming that PDCCH candidates corresponding to the Pcell are blindly detected in the CSS set of the Pcell, and PDCCH candidates corresponding to the primary cell Pcell are blindly detected in the USS set of the Scell, the above obtaining the maximum PDCCH candidate blind detection times corresponding to a serving cell and / or the maximum non-overlapping CCE numbers used for PDCCH candidate blind detection in a serving cell can specifically include:

[0170] Obtaining the maximum PDCCH candidate blind detection times in the Pcell and the Scell and / or the maximum non-overlapping CCE numbers used for PDCCH candidate blind detection in the CSS set and / or the USS set.

[0171] Correspondingly, obtaining the maximum PDCCH candidate blind detection times in the Pcell and the Scell and / or the maximum non-overlapping CCE numbers used for PDCCH candidate blind detection in the CSS set and / or the USS set includes at least one of the following:

[0172] receiving information (i.e., corresponding to the third indication information) sent by the base station, the information indicating a maximum number of PDCCH candidate blind decodes in the Pcell and the Scell, and / or a maximum number of non-overlapped CCEs for PDCCH candidate blind decoding in the CSS set and / or the USS set;

[0173] treating the CSS set as alpha serving cells and the USS set as beta serving cells, determining the maximum number of PDCCH candidate blind decodes in the Pcell and the Scell, and / or the maximum number of non-overlapped CCEs for PDCCH candidate blind decoding in the CSS set and / or the USS set based on the total number of serving cells.

[0174] In the case that there are more than one Scell (e.g., two) for transmitting PDCCH candidates corresponding to the Pcell, the treating the USS set as beta serving cells can mean treating the USS sets of the two Scells as beta serving cells.

[0175] wherein alpha and beta satisfy: 0 < alpha ≤ 1, 0 < beta ≤ 1.

[0176] In optional embodiments of the present application, alpha and beta can be determined by at least one of the following ways:

[0177] alpha and / or beta are predetermined values;

[0178] receiving information for indicating alpha and / or beta, and determining alpha and / or beta based on the information;

[0179] determining alpha according to a predetermined calculation manner, and determining beta based on a predetermined relationship between alpha and beta.

[0180] determining alpha and / or beta according to a predetermined calculation manner.

[0181] Optionally, determining alpha according to a predetermined calculation manner can include at least one of the following:

[0182] determining alpha according to a number of blind decodes in the CSS set and a maximum number of PDCCH candidate blind decodes of one serving cell;

[0183] determining alpha according to a number of non-overlapped CCEs for PDCCH candidate blind decoding in the CSS set and a maximum number of non-overlapped CCEs for PDCCH candidate blind decoding of one serving cell;

[0184] The alpha is determined according to the number of blind detections in the CSS, the maximum number of blind detections of PDCCH candidates of one serving cell, the number of non-overlapping CCEs in the CSS set of one serving cell for PDCCH candidate blind detection, and the maximum number of non-overlapping CCEs of one serving cell for PDCCH candidate blind detection.

[0185] That is, the maximum number of blind detections of PDCCH candidates in the Pcell and the Scell, and / or the maximum number of non-overlapping CCEs in the CSS set and / or the USS set for PDCCH candidate blind detection, can be indicated by the base station to the UE, or can be determined by the UE based on an agreed calculation method. That is, the information of the maximum number of blind detections of PDCCH candidates in the Pcell and the Scell, and / or the maximum number of non-overlapping CCEs in the CSS set and / or the USS set for PDCCH candidate blind detection, can be indicated by the base station to the UE, or can be determined by the UE.

[0186] When the UE determines by itself, the UE needs to know the specific value of alpha and beta. The specific value can be obtained in at least one of the manners shown in the optional embodiments described above, and of course, the specific manner can also be agreed by the UE and the base station. The specific implementation of the UE obtaining the maximum number of blind detections of PDCCH candidates in the Pcell and the Scell, and / or the maximum number of non-overlapping CCEs in the CSS set and / or the USS set for PDCCH candidate blind detection, will be described in combination with different optional embodiments below, and will not be expanded here.

[0187] In the optional embodiments of the present application, for one serving cell, if the serving cell is a Scell of at least one first UE and a Pcell of at least one second UE, and the PDCCH candidate for scheduling PDSCH transmitted on the Pcell of the first UE and the PDCCH candidate for scheduling PDSCH transmitted on the Pcell of the second UE are both in the serving cell, the PDCCH candidate for scheduling PDSCH transmitted on the Pcell of the first UE and the PDCCH candidate for scheduling PDSCH transmitted on the Pcell of the second UE satisfy at least one of the following conditions:

[0188] The number of bits is different;

[0189] Different RNTIs are used to scramble CRCs;

[0190] The time-frequency positions of the CSS sets in which the two are located do not coincide.

[0191] In CA system, since one serving cell can be Pcell of one UE and Scell of another UE, for example, cell-1 is Pcell of UE-1 and cell-2 is Scell of UE-1, cell-2 is Pcell of UE-2, as shown in Figure 2 that is, cell-2 is both Scell of UE-1 and Pcell of UE-2, how to distinguish PDCCH (in PDCCH candidate scrambled by SI-RNTI) for scheduling PDSCH of cell-1 and PDCCH for scheduling PDSCH of cell-2, that is, how to distinguish PDCCH candidate for scheduling PDSCH transmitted in cell-2, is it for UE-1 or for UE-2? In order to solve the problem, the embodiments of the present application provide several optional ways. The several ways will be described in combination with several optional embodiments. Figure 2

[0192] Way one:

[0193] Distinguish by bit number of PDCCH, that is, ensure that bit number of DCI in PDCCH for scheduling PDSCH of Scell is different from bit number of DCI in PDCCH for scheduling PDSCH of Pcell, if same, add bits to make their bit numbers different, for example, bit number of DCI in PDCCH for scheduling PDSCH of Pcell scrambled by SI-RNTI is 30, bit number of DCI in PDCCH for scheduling PDSCH of Scell scrambled by SI-RNTI is also 30, in order to distinguish, bit number of DCI in PDCCH for scheduling PDSCH of Pcell scrambled by SI-RNTI is changed to 31, so that bit numbers of the two are different.

[0194] ​It should be noted that, in the DCI in the PDCCH scheduling the PDSCH transmitted in the Scell for the cross-carrier scheduling UE, the Pcell is for other UEs, and in the DCI in the PDCCH scheduling the PDSCH transmitted in the Pcell for the Scell for the cross-carrier scheduling UE, the Pcell is for the UE, for example, if a serving cell A is the Pcell of UE1, a serving cell B is the Scell of UE1, the serving cell B is the Pcell of UE2, and the PDCCH candidate for scheduling the PDSCH transmitted in the cell A is transmitted in the cell B, and the PDCCH candidate for scheduling the PDSCH transmitted in the cell B is also transmitted in the cell B, then the cell B is the Scell for UE1 and the Pcell for UE2, for UE1, the PDCCH candidate for scheduling the PDSCH transmitted in the cell B is the PDCCH scheduling the PDSCH transmitted in the Scell, and the PDCCH candidate for scheduling the PDSCH transmitted in the cell A is the PDCCH scheduling the PDSCH transmitted in the Pcell.

[0195] Mode two:

[0196] The RNTI for scrambling the PDCCH is different, that is, the RNTI for scrambling the CRC of the PDCCH scheduling the PDSCH transmitted in the Scell is different from the RNTI for scrambling the CRC of the PDCCH scheduling the PDSCH transmitted in the Pcell.

[0197] Mode three:

[0198] The time-frequency positions of the CSSs are not overlapped, that is, the time-frequency positions of the CSSs in which the PDCCH candidates scheduling the PDSCH transmitted in the Scell are located are not overlapped with the time-frequency positions of the CSSs in which the PDCCH candidates scheduling the PDSCH transmitted in the Pcell are located, so that the UE can distinguish the PDCCH scheduling the PDSCH transmitted in the Pcell and the PDCCH scheduling the PDSCH transmitted in the Scell.

[0199] In order to more specifically illustrate the method provided by the embodiments of the present application, the scheme of the present application will be introduced in detail through multiple optional embodiments as follows:

[0200] Optional embodiment one

[0201] For PDSCH or PUSCH transmitted in a Pcell, the PDCCH that schedules the PDSCH or PUSCH in the CSS set is also transmitted in the Pcell. That is, the CSS set of the PDCCH that schedules the PDSCH or PUSCH in the Pcell is in the Pcell, and the PDCCH in the Pcell's CSS set schedules the PDSCH or PUSCH on the same carrier. The PDCCH that schedules the PDSCH or PUSCH can include PDCCH with SI-RNTI, P-RNTI, RA-RNTI scrambled CRC, and C-RNTI scrambled CRC, etc. Since the PDSCH or PUSCH that transmits system information, paging information, and random access information in the Pcell is common to all users in the cell, if the PDCCH that schedules the PDSCH or PUSCH that transmits system information, paging information, and random access information in the Pcell is also transmitted in the Pcell, then this PDCCH only needs to be transmitted once, saving the resources occupied by the PDCCH. For example, consider three UEs: UE-1, UE-2, and UE-3. The Pcell for UE-1, UE-2, and UE-3 is cell-1. UE-1 has only one serving cell, which is cell-1. UE-2 has two serving cells, with cell-1 as the Pcell and cell-2 as the Scell. UE-3 also has two serving cells, with cell-1 as the Pcell and cell-3 as the Scell. In this case, the PDCCH for scheduling system information transmission, such as PDSCH or PUSCH, is transmitted in cell-1. Figure 3 As shown. Furthermore, using this method, scheduling PDSCH or PUSCH on the same carrier within the Pcell's CSS set can facilitate UE reconfiguration of the Scell. This is because if all PDSCH or PUSCH of the Pcell is scheduled by the Scell's PDCCH, when the Scell's performance deteriorates, a new, high-performance Scell ​​cannot be reconfigured for the UE using the PDSCH scheduled by the PDCCH. However, if the PDCCH in the Pcell's CSS set schedules PDSCH or PUSCH on the same carrier, when the Scell's performance deteriorates, a new, high-performance Scell ​​can be reconfigured for the UE using the PDSCH scheduled by the Pcell's CSS set.

[0202] Optionally, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like is not used for scheduling PDSCH or PUSCH, but for power control of PUCCH and PUSCH in Pcell, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like can be transmitted in Pcell, for power control of PUCCH and PUSCH in Pcell, since the CSS set is transmitted in one serving cell, the number of blind detection of PDCCH candidates in the CSS set can be reduced. The PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like is not used for scheduling PDSCH or PUSCH, but for power control of PUCCH and PUSCH in Pcell, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like can be transmitted in Scell, for power control of PUCCH and PUSCH in Pcell, the resources of PDCCH in Pcell can be saved.

[0203] Optionally, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like is not used for scheduling PDSCH or PUSCH, but for power control of PUCCH and PUSCH in Pcell, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like can be transmitted in Scell, for power control of PUCCH and PUSCH in Pcell, the resources of PDCCH in Pcell can be saved.

[0204] Optionally, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like is not used for scheduling PDSCH or PUSCH, but for power control of PUCCH and PUSCH in Pcell, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like can be transmitted in Scell, for power control of PUCCH and PUSCH in Pcell, the resources of PDCCH in Pcell can be saved.

[0205] Optionally, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like is not used for scheduling PDSCH or PUSCH, but for power control of PUCCH and PUSCH in Pcell, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like can be transmitted in Scell, for power control of PUCCH and PUSCH in Pcell, the resources of PDCCH in Pcell can be saved.

[0206] Optionally, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like is not used for scheduling PDSCH or PUSCH, but for power control of PUCCH and PUSCH in Pcell, the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI and the like can be transmitted in Scell, for power control of PUCCH and PUSCH in Pcell, the resources of PDCCH in Pcell can be saved.

[0207] For PDSCH or PUSCH transmitted in Pcell, whether the PDCCH scheduling PDSCH or PUSCH in CSS set is transmitted in Pcell or Scell can be indicated by signaling, for example, determined by high layer signaling configuration or preset by protocol. Or the PDCCH scheduling PDSCH or PUSCH in CSS set is transmitted in both Pcell and Scell.

[0208] Optionally, whether the PDCCH scrambling CRC for power control of PUCCH and PUSCH in Pcell is transmitted in Pcell or Scell can be indicated by signaling, for example, determined by high layer signaling configuration or preset by protocol. Or the PDCCH scrambling CRC for power control of PUCCH and PUSCH in Pcell is transmitted in both Pcell and Scell.

[0209] Optionally, whether the PDCCH scheduling PDSCH or PUSCH in USS set is transmitted in Pcell or Scell can be indicated by signaling, for example, determined by high layer signaling configuration or preset by protocol. Or the PDCCH scheduling PDSCH or PUSCH in USS set is transmitted in both Pcell and Scell.

[0210] With the above method, flexibility of saving Pcell resources and reducing the number of PDCCH candidate blind detection is provided, and the base station can determine to use different methods according to different needs.

[0211] Optional Embodiment Four

[0212] When the CSS set in which the PDCCH for scheduling PDSCH or PUSCH in Pcell is located (the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, etc. for power control of PUCCH and PUSCH in Pcell, if included, is located in the CSS for scheduling PDSCH or PUSCH in Pcell) is transmitted in Pcell, the USS set in which the PDCCH for scheduling PDSCH or PUSCH in Pcell is located (the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, etc. for power control of PUCCH and PUSCH in Pcell, if included, is located in the USS for scheduling PDSCH or PUSCH in Pcell) is transmitted in Scell, as shown in the example of Figure 4 CSS set in which the PDCCH candidate for scheduling PDSCH in Pcell is located (CSS PDCCH shown in the figure) is transmitted in Pcell, and the USS set in which the PDCCH candidate for scheduling PDSCH in Pcell is located (USS PDCCH shown in the figure) is transmitted in Scell. At this time, the determination of the maximum PDCCH candidate blind detection times and the maximum number of non-overlapping control channel elements (CCEs) for PDCCH candidate blind detection includes the following methods.

[0213] Alternatively, since the PDCCH in the CSS set in which PDSCH or PUSCH transmitted in Pcell is scheduled is transmitted in Pcell, the PDCCH in the USS set in which PDSCH or PUSCH transmitted in Pcell is scheduled is transmitted in Scell, and the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, etc. for power control of PUCCH and PUSCH in Pcell can be transmitted in the CSS set of Pcell, or the PDCCH scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, etc. for power control of PUCCH and PUSCH in Pcell can be transmitted in the CSS set of Scell. That is, for the PDCCH for PDSCH / PUSCH scheduling and PUCCH / PUSCH power control of one Pcell, part of the PDCCH candidates are transmitted in Pcell, and the other part of the PDCCH candidates are transmitted in Scell. At this time, how to determine the maximum PDCCH candidate blind detection times and the maximum number of non-overlapping CCEs for PDCCH candidate blind detection of the two parts of PDCCH candidates.

[0214] The PDCCH candidate transmitted in the Pcell is taken as an example to be explained below, which is the PDCCH candidate in the CSS set that schedules the PDSCH or PUSCH transmitted in the Pcell. The PDCCH candidate transmitted in the Scell is taken as an example to be explained below, which is the PDCCH candidate in the USS set that schedules the PDSCH or PUSCH in the Pcell.

[0215] Optionally, when calculating the maximum PDCCH candidate blind detection times of the UE for each serving cell and the maximum non-overlapping control channel unit CCE number for PDCCH candidate blind detection, the PDCCH candidate transmitted in the Pcell that schedules the PDSCH or PUSCH in the Pcell is treated as alpha serving cells, and the PDCCH candidate transmitted in the Scell that schedules the PDSCH or PUSCH in the Pcell is treated as beta (beta is greater than 0 and less than or equal to 1, the UE can obtain the beta value through preset or receiving signaling, for example, by receiving high layer signaling configuration, beta can also be calculated through the blind detection times in the USS and the maximum PDCCH candidate blind detection times of a serving cell USS or the maximum non-overlapping CCE number for PDCCH candidate blind detection, or through alpha, for example, beta = 1 - alpha) serving cells.

[0216] Wherein, alpha is greater than 0 and less than or equal to 1. For the specific value of alpha, the alpha value can be obtained through preset (i.e. agreed value) or receiving signaling, for example, by receiving high layer signaling configuration.

[0217] As another optional way, the value of alpha can also be calculated by the number of blind decodes in the CSS set and the maximum number of PDCCH candidate blind decodes of one serving cell, for example, assuming the number of blind decodes in the CSS set is 16 and the maximum number of PDCCH candidate blind decodes of one serving cell is 44, then alpha = 16 / 44; or calculated by the number of non-overlapping CCEs of PDCCH candidate blind decodes in the CSS set and the maximum number of non-overlapping CCEs for PDCCH candidate blind decodes of one serving cell, for example, the number of non-overlapping CCEs of PDCCH candidate blind decodes in the CSS set is 32 and the maximum number of non-overlapping CCEs for PDCCH candidate blind decodes of one serving cell is 56, then alpha = 32 / 56; or calculated by the number of blind decodes in the CSS set, the maximum number of PDCCH candidate blind decodes in the CSS set, the number of non-overlapping CCEs of PDCCH candidate blind decodes in the CSS set and the maximum number of non-overlapping CCEs for PDCCH candidate blind decodes of one serving cell, for example, the number of blind decodes in the CSS set is 16 and the maximum number of PDCCH candidate blind decodes of one serving cell is 44, then alpha-1 = 16 / 44, the number of non-overlapping CCEs of PDCCH candidate blind decodes in the CSS set is 32 and the maximum number of non-overlapping CCEs for PDCCH candidate blind decodes of one serving cell is 56, then alpha-2 = 32 / 56, and alpha is equal to the maximum or minimum of alpha-1 and alpha-2.

[0218] It can be understood that in the above examples of obtaining the value of alpha, alpha is taken as an example for description, and the above way is also applicable to obtaining the value of beta. Of course, in actual application, if the values of alpha and beta have a certain fixed relationship, such as the sum of the two is equal to a fixed value, then after obtaining the value of alpha, the value of beta can be determined based on the fixed relationship. Similarly, in the above examples, the CSS set is taken as an example for description, and the above way is also applicable to the USS set.

[0219] It should be noted that the alpha value and / or the beta value can be obtained by the base station or by the UE. When the alpha value and / or the beta value are obtained by the base station, the base station can send the alpha value and / or the beta value to the UE after obtaining the alpha value and / or the beta value. Alternatively, the UE can determine the maximum PDCCH candidate blind detection times in the Pcell and the Scell, and / or the maximum non-overlapping CCEs in the CSS set and / or the USS set for PDCCH candidate blind detection based on the alpha value and the beta value, and indicate the determined results to the UE. Alternatively, the UE can determine the alpha value and the beta value and calculate the maximum PDCCH candidate blind detection times and / or the CCEs by itself.

[0220] For convenience of description, the following description of each of the optional modes is still described by taking the CSS set as an example. It should be understood that each of the optional modes is also applicable to the USS set.

[0221] Optionally, when alpha and beta are equal to 1, the PDCCH scheduling PDSCH or PUSCH in Pcell in CSS set transmitted in Pcell and the PDCCH scheduling PDSCH or PUSCH in Pcell in USS set transmitted in Scell, in calculating the maximum number of PDCCH candidate blind detection or the maximum number of non-overlapped CCEs for PDCCH candidate blind detection of each serving cell of the UE, the CSS set transmitted in Pcell scheduling PDSCH or PUSCH in Pcell and the USS set transmitted in Scell scheduling PDSCH or PUSCH in Pcell are treated as two different serving cells, so that the maximum number of PDCCH candidate blind detection or the maximum number of non-overlapped CCEs for PDCCH candidate blind detection of each serving cell is easier to determine when the subcarrier spacing configurations of Pcell and Scell are different. For example, UE-1 is configured with 4 serving cells, which are Pcell, Scell-1, Scell-2, Scell-3 respectively, the CSS set transmitted in Pcell scheduling PDSCH or PUSCH in Pcell, the USS set transmitted in Scell-1 scheduling PDSCH or PUSCH in Pcell, the USS set transmitted in Scell-1 scheduling PDSCH or PUSCH in Scell-1, the USS set transmitted in Scell-2 scheduling PDSCH or PUSCH in Scell-2, the USS set transmitted in Scell-3 scheduling PDSCH or PUSCH in Scell-3, in fact, the UE is configured with 4 serving cells, in calculating the maximum number of PDCCH candidate blind detection or the maximum number of non-overlapped CCEs for PDCCH candidate blind detection of each serving cell of the UE, it is treated as 5 serving cells, that is, the CSS set transmitted in Pcell scheduling PDSCH or PUSCH in Pcell as a serving cell, the USS set transmitted in Scell-1 scheduling PDSCH or PUSCH in Pcell as a serving cell, the USS set transmitted in Scell-1 scheduling PDSCH or PUSCH in Scell-1 as a serving cell, the USS set transmitted in Scell-2 scheduling PDSCH or PUSCH in Scell-2 as a serving cell, the USS set transmitted in Scell-3 scheduling PDSCH or PUSCH in Scell-3 as a serving cell.

[0222] Optionally, when beta + alpha = 1, the CSS set transmitted in the Pcell to schedule PDSCH or PUSCH in the Pcell and the USS set transmitted in the Scell to schedule PDSCH or PUSCH in the Pcell are treated as one serving cell in calculating the maximum number of PDCCH candidate blind decodes per serving cell or the maximum number of non-overlapped CCEs for PDCCH candidate blind decodes. For example, when beta = 1 - alpha, UE-1 is configured with 4 serving cells, Pcell, Scell-1, Scell-2, Scell-3, respectively, the CSS set transmitted in the Pcell to schedule PDSCH or PUSCH in the Pcell, the USS set transmitted in the Scell-1 to schedule PDSCH or PUSCH in the Pcell, the USS set transmitted in the Scell-1 to schedule PDSCH or PUSCH in the Scell-1, the USS set transmitted in the Scell-2 to schedule PDSCH or PUSCH in the Scell-2, the USS set transmitted in the Scell-3 to schedule PDSCH or PUSCH in the Scell-3, in fact, UE is configured with 4 serving cells, in calculating the maximum number of PDCCH candidate blind decodes per serving cell or the maximum number of non-overlapped CCEs for PDCCH candidate blind decodes, it is treated as 4 serving cells, that is, the CSS set transmitted in the Pcell to schedule PDSCH or PUSCH in the Pcell and the USS set transmitted in the Scell-1 to schedule PDSCH or PUSCH in the Pcell are treated as one serving cell, but when the subcarrier spacing configurations of the Pcell and the Scell-1 are different, the CSS set in the Pcell and the USS set in the Scell-1 each occupy a part of the maximum number of PDCCH candidate blind decodes per serving cell or the maximum number of non-overlapped CCEs for PDCCH candidate blind decodes.

[0223] Optionally, when 2 > beta + alpha > 1, the CSS set transmitted in the Pcell to schedule PDSCH or PUSCH in the Pcell is treated as alpha serving cells and the USS set transmitted in the Scell to schedule PDSCH or PUSCH in the Pcell is treated as beta serving cells in calculating the maximum number of PDCCH candidate blind decodes per serving cell or the maximum number of non-overlapped CCEs for PDCCH candidate blind decodes.

[0224] Optionally, the UE-1 is configured with 4 serving cells, Pcell, Scell-1, Scell-2, Scell-3, the CSS set scheduling PDSCH or PUSCH in Pcell is transmitted in Pcell, the USS set scheduling PDSCH or PUSCH in Pcell is transmitted in Scell-1, the USS set scheduling PDSCH or PUSCH in Scell-1 is transmitted in Scell-1, the USS set scheduling PDSCH or PUSCH in Scell-2 is transmitted in Scell-2, the USS set scheduling PDSCH or PUSCH in Scell-3 is transmitted in Scell-3, in fact, the UE is configured with 4 serving cells, when calculating the maximum PDCCH candidate blind detection times of each serving cell of the UE or the maximum non-overlapping CCE number for PDCCH candidate blind detection, it is treated as 3+alpha+beta serving cells, that is, the CSS set scheduling PDSCH or PUSCH in Pcell transmitted in Pcell is treated as alpha serving cells, the USS set scheduling PDSCH or PUSCH in Pcell transmitted in Scell-1 is treated as beta serving cells, the USS set scheduling PDSCH or PUSCH in Scell-1 transmitted in Scell-1 is treated as one serving cell, the USS set scheduling PDSCH or PUSCH in Scell-2 transmitted in Scell-2 is treated as one serving cell, and the USS set scheduling PDSCH or PUSCH in Scell-3 transmitted in Scell-3 is treated as one serving cell.

[0225] Based on the same inventive concept as the method provided in the present application, the embodiments of the present application further provide a user equipment (UE), as shown in Figure 5 The user equipment 100 can include a first processing module 110 and a second processing module 120, wherein:

[0226] The first processing module 110 is configured to determine resource positions of serving cells used for transmitting PDCCH candidates corresponding to Pcell, the serving cells including Pcell and / or Scell.

[0227] The second processing module 120 is configured to blindly detect the PDCCH candidates corresponding to Pcell on the determined resource positions of the serving cells.

[0228] Optionally, the first processing module 110 can be configured to:

[0229] determine the resource positions as at least one of the CSS set and the USS set of Pcell, and at least one of the CSS set and the USS set of Scell;

[0230] determining the resource location as the CSS set of the Scell and the USS set of the Scell;

[0231] obtaining the first indication information, and determining the resource location according to the first indication information.

[0232] Optionally, the first processing module 110, when determining the resource location as at least one of the CSS set of the Pcell and the USS set of the Pcell, and at least one of the CSS set of the Scell and the USS set of the Scell, can be specifically configured to perform at least one of the following:

[0233] determining the resource location as the CSS set of the Pcell and the USS set of the Scell;

[0234] determining the resource location as the CSS set of the Pcell and the USS set of the Scell, and the CSS set of the Scell and the USS set of the Scell.

[0235] Optionally, the PDCCH candidate corresponding to the Pcell includes a first PDCCH candidate for scheduling a PDSCH or a PUSCH transmitted in the Pcell, and / or a second PDCCH candidate which is not for scheduling the PDSCH or the PUSCH transmitted in the Pcell.

[0236] Optionally, when the resource location is at least one of the CSS set of the Pcell and the USS set of the Scell, the second processing module 120, when blind detecting the PDCCH candidate corresponding to the Pcell in the CSS set of the Pcell and blind detecting the PDCCH candidate corresponding to the Pcell in the USS set of the Scell, can be configured to perform any one of the following:

[0237] blind detecting the first PDCCH candidate and the second PDCCH candidate in the CSS set of the Pcell; and blind detecting the first PDCCH candidate in the USS set of the Scell;

[0238] blind detecting the first PDCCH candidate in the CSS set of the Pcell, blind detecting the second PDCCH candidate in the CSS set of the Scell, and blind detecting the first PDCCH candidate in the USS set of the Scell.

[0239] Optionally, when the resource location is at least one of the CSS set of the Pcell and the USS set of the Scell, and at least one of the CSS set of the Scell and the USS set of the Scell, the second processing module can be configured to:

[0240] blind detecting a first part of the PDCCH candidate corresponding to the Pcell in at least one of the CSS set of the Pcell and the USS set of the Pcell;

[0241] blind a second part of PDCCH candidates in the PDCCH candidates corresponding to the PDCCH candidates of the Pcell in at least one of the CSS set and the USS set of the Scell;

[0242] wherein the first part of PDCCH candidates comprises at least one of the first PDCCH candidates, and / or at least one of the second PDCCH candidates; and the second part of PDCCH candidates comprises at least one of the first PDCCH candidates, and / or at least one of the second PDCCH candidates.

[0243] Optionally, the first processing module can be further configured to:

[0244] obtain the second indication information;

[0245] determine the first part of PDCCH candidates and / or the second part of PDCCH candidates according to the second indication information.

[0246] Optionally, the first indication information comprises at least one of:

[0247] information for indicating that the first PDCCH candidates are transmitted in the CSS set of the Pcell and / or in the CSS set of the Scell;

[0248] information for indicating that the second PDCCH candidates are transmitted in the CSS set of the Pcell and / or in the CSS set of the Scell;

[0249] information for indicating that the first PDCCH candidates are transmitted in the USS set of the Pcell and / or in the USS set of the Scell.

[0250] Optionally, the second processing module 120 can be further configured to:

[0251] obtain the maximum number of PDCCH candidate blind detection corresponding to the serving cell, and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the serving cell.

[0252] Optionally, when obtaining the maximum number of PDCCH candidate blind detection corresponding to the serving cell, and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the serving cell, the second processing unit can be configured to perform at least one of:

[0253] determine the maximum number of PDCCH candidate blind detection corresponding to the serving cell, and / or the maximum number of non-overlapping CCEs for PDCCH candidate blind detection in the serving cell according to the number of serving cells supporting PDCCH candidate blind detection by the UE and the number of serving cells configured for the UE;

[0254] The third indication information is acquired, and the maximum PDCCH candidate blind detection times corresponding to the serving cell and / or the maximum non-overlapping CCE number for PDCCH candidate blind detection in the serving cell are determined according to the third indication information.

[0255] Optionally, the second processing unit can be configured to perform at least one of the following:

[0256] When the number of the serving cells configured for the UE is less than or equal to the number of the serving cells supporting PDCCH candidate blind detection of the UE, the maximum PDCCH candidate blind detection times corresponding to each of the serving cells configured for the UE and / or the maximum non-overlapping CCE number for PDCCH candidate blind detection in each of the serving cells configured for the UE are determined according to the subcarrier space configuration of each of the serving cells configured for the UE.

[0257] When the number of the serving cells configured for the UE is greater than the number of the serving cells supporting PDCCH candidate blind detection of the UE, the sum of the maximum PDCCH candidate blind detection times corresponding to all the serving cells corresponding to each of the subcarrier space configurations configured for the UE is determined according to the number of the cells for transmitting PDCCH candidates of the Pcell, the number of the cells for transmitting PDCCH candidates other than the Pcell, the number of the serving cells supporting PDCCH candidate blind detection of the UE, and the subcarrier space configuration of each of the serving cells configured for the UE, and / or the sum of the maximum non-overlapping CCE numbers for PDCCH candidate blind detection in all the serving cells corresponding to each of the subcarrier space configurations configured for the UE.

[0258] Optionally, when the sum of the maximum PDCCH candidate blind detection times corresponding to all the serving cells corresponding to each of the subcarrier space configurations configured for the UE is determined according to the number of the serving cells configured for the UE, the number of the serving cells supporting PDCCH candidate blind detection of the UE, and the subcarrier space configuration of each of the serving cells configured for the UE, the second processing unit can be configured to:

[0259] The sum of the maximum PDCCH candidate blind detection times corresponding to all the serving cells corresponding to each of the subcarrier space configurations configured for the UE is determined according to the following formula:

[0260]

[0261] wherein, represents the sum of the maximum PDCCH candidate blind detection times corresponding to all the serving cells configured for the UE with the subcarrier space configuration being μ i represents the number of the serving cells supporting PDCCH candidate blind detection of the UE, represents the maximum PDCCH candidate blind detection times corresponding to all the serving cells of the UE with the subcarrier space configuration being μ i ​the maximum number of PDCCH candidate blind detection supported by the serving cell of the UE, denotes the subcarrier spacing configuration configured for the UE i denotes the number of serving cells of the UE, and j denotes the subcarrier spacing configuration, denotes the number of primary cells configured for the UE for transmitting PDCCH candidates of the Pcell, and μ1 denotes the subcarrier spacing configuration of the primary cell, denotes the number of secondary cells configured for the UE for transmitting PDCCH candidates of the Pcell, denotes the number of serving cells configured for the UE for transmitting PDCCH candidates corresponding to non-Pcell, denotes the floor function;

[0262] The second processing unit can be used for:

[0263] The sum of the maximum non-overlapping CCE numbers in all serving cells corresponding to each subcarrier spacing configuration configured for the UE for PDCCH candidate blind detection is determined according to the following formula:

[0264]

[0265] wherein, denotes the subcarrier spacing configuration configured for the UE i the sum of the maximum non-overlapping CCE numbers in all serving cells of the UE for PDCCH candidate blind detection, denotes the maximum non-overlapping CCE number in the serving cell of the UE in which the subcarrier spacing configuration is μ i for PDCCH candidate blind detection.

[0266] Optionally, the serving cell for transmitting PDCCH candidates corresponding to the Pcell includes the Pcell and at least one Scell, and if the above resource location is the CSS set and / or the USS set of the serving cell, the Pcell is treated as alpha serving cells, and the at least one Scell is treated as beta serving cells.

[0267] wherein, alpha and beta satisfy: 0 < alpha ≤ 1, and 0 < beta ≤ 1.

[0268] Optionally, the second processing module 120 can determine alpha and beta in at least one of the following manners:

[0269] alpha and / or beta are predetermined values;

[0270] receiving information indicating alpha and / or beta, and determining alpha and / or beta based on the information;

[0271] determining alpha according to a predetermined calculation manner, and determining beta based on a predetermined relationship between alpha and beta.

[0272] determining alpha and / or beta according to a predetermined calculation manner.

[0273] Optionally, for a serving cell, if the serving cell is a Scell of at least one first UE and a Pcell of at least one second UE, and a PDCCH candidate for scheduling a PDSCH transmitted on the Pcell of the first UE and a PDCCH candidate for scheduling a PDSCH transmitted on the Pcell of the second UE are both the serving cell, the PDCCH candidate for scheduling the PDSCH transmitted on the Pcell of the first UE and the PDCCH candidate for scheduling the PDSCH transmitted on the Pcell of the second UE satisfy at least one of the following conditions:

[0274] the number of bits of the two are different;

[0275] the two use different RNTI scrambling CRCs;

[0276] the time-frequency positions of the CSS sets in which the two are located do not coincide.

[0277] The user equipment not detailed in the embodiments of the present application can refer to the blind detection method of the PDCCH candidate described above. The UE provided in the embodiments of the present application can achieve the same beneficial effects as the blind detection method of the PDCCH candidate described above, and thus will not be described again.

[0278] Based on the same inventive concept as the method provided in the present application, the embodiments of the present application further provide a user equipment, which comprises a processor and a memory; wherein the memory is configured to store machine-readable instructions, which, when executed by the processor, cause the processor to execute the method shown in any optional embodiment of the present application.

[0279] Based on the same inventive concept as the method provided in the present application, the embodiments of the present application further provide a computer-readable storage medium, which stores a computer program for being executed by a processor to implement the method shown in any optional embodiment of the present application.

[0280] In an optional embodiment, Figure 6 A structural schematic diagram of an electronic device (which can be a UE) suitable for the scheme provided by the embodiments of the present application is shown in FIG. 4A, and the electronic device 4000 can include a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, for example, through a bus 4002. Optionally, the electronic device 4000 can also include a transceiver 4004. It should be noted that the transceiver 4004 is not limited to one in actual application, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present application. Figure 6

[0281] The processor 4001 can 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. It can implement or execute various exemplary logical blocks, modules and circuits described in combination with the disclosure of the present application. The processor 4001 can also be a combination of computing functions, such as one or more microprocessor combinations, combinations of DSP and microprocessor, etc.

[0282] The bus 4002 can include a channel for transmitting information between the above-mentioned components. The bus 4002 can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus 4002 can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 6 In FIG. 4B, only one thick line is used, but it does not mean that there is only one bus or only one type of bus.

[0283] ​The memory 4003 can be a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory) or other type of dynamic storage device 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, an optical disc storage (including a compact disc, a laser disc, an optical disc, a digital versatile disc, a Blu-ray disc, etc.), a magnetic disc storage medium or other magnetic storage device, 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 thereto.

[0284] The memory 4003 is configured to store application program codes for implementing the solutions of the present application, and the processor 4001 is configured to control the execution. The processor 4001 is configured to execute the application program codes stored in the memory 4003 to implement the content shown in any of the foregoing method embodiments.

Claims

1. A method executed by a user equipment (UE) in a communication system, characterized in that, The method includes: Determine candidates for the Physical Downlink Control Channel (PDCCH) of the PCell to be scheduled in at least one search space set of the primary cell PCell and at least one search space set of the secondary cell SCell, wherein the PCell is scheduled from the PCell and the SCell. Receive information from the base station to determine the maximum number of first PDCCH candidates for the scheduling Pcell being monitored on the PCell and the maximum number of second PDCCH candidates for the scheduling Pcell being monitored on the SCell. Based on the information, determine the maximum number of times the first PDCCH candidate is listened to on the PCell; Based on the information, determine the maximum number of times the second PDCCH candidate is monitored on SCell; Based on the maximum number of times the first PDCCH candidate is detected, the first PDCCH candidate is monitored on the PCell; based on the maximum number of times the second PDCCH candidate is detected, the second PDCCH candidate is monitored on the SCell.

2. The method according to claim 1, characterized in that, The first PDCCH associated with the first PDCCH candidate includes a downlink control information DCI format with cyclic redundancy check (CRC). The CRC is scrambled using one of the following: System Information Radio Network Temporary Identifier (SI-RNTI), Paging Radio Network Temporary Identifier (P-RNTI), Random Access Radio Network Temporary Identifier (RA-RNTI), Temporary Radio Network Temporary Identifier (TC-RNTI), and Cell Radio Network Temporary Identifier (C-RNTI).

3. The method according to claim 1 or 2, characterized in that, The first PDCCH candidate is in the public search space CSS set of the PCell; The second PDCCH candidate is in the UE-specific search space USS set of the SCell.

4. A method executed by a base station in a communication system, characterized in that, The method includes: Send information to the UE to determine the maximum number of first PDCCH candidates of the scheduling PCell being listened to on the PCell and the maximum number of second PDCCH candidates of the scheduling PCell being listened to on the SCell; Send the first PDCCH associated with the first PDCCH candidate to the UE; Send a second PDCCH associated with the second PDCCH candidate to the UE; Among them, the PDCCH candidates for scheduling PCell are in at least one search space set of PCell and at least one search space set of SCell, and PCell is scheduled from PCell and SCell. The maximum number of times the first PDCCH candidate is listened to on the PCell is based on the information mentioned above; the maximum number of times the second PDCCH candidate is listened to on the SCell is based on the information mentioned above.

5. The method according to claim 4, characterized in that, The first PDCCH associated with the first PDCCH candidate includes a downlink control information DCI format with cyclic redundancy check (CRC). The CRC is scrambled using one of the following: System Information Radio Network Temporary Identifier (SI-RNTI), Paging Radio Network Temporary Identifier (P-RNTI), Random Access Radio Network Temporary Identifier (RA-RNTI), Temporary Radio Network Temporary Identifier (TC-RNTI), and Cell Radio Network Temporary Identifier (C-RNTI).

6. The method according to claim 3 or 4, characterized in that, The first PDCCH candidate is in the public search space CSS set of the PCell; The second PDCCH candidate is in the UE-specific search space USS set of the SCell.

7. A user equipment (UE) in a communication system, characterized in that, The UE includes: transceiver; A processor configured to perform the method according to any one of claims 1 to 3.

8. A base station in a communication system, characterized in that, The base station includes: transceiver; A processor configured to perform the method according to any one of claims 4 to 6.

9. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that, when executed by a processor, implements the method as described in any one of claims 1-3, or the method as described in any one of claims 4 to 6.

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