Data receiving method, data transmitting method and device

Abstract

An embodiment of the present invention provides a data receiving method, a data transmitting method and an apparatus, which includes: a processing unit for allocating a PDCCH candidate to a first search space, where the first search space is used for scheduling a cell in a first set; and a receiving unit for receiving DCI in the first search space, where the DCI is used for scheduling at least two cells in the first set.

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE The present invention relates to the field of communications technology. [Background technology]

[0002] A Physical Downlink Shared Channel (PDSCH) is one of the physical downlink channels in a wireless communication system and is used to carry downlink data. A Physical Uplink Shared Channel (PUSCH) is one of the physical uplink channels in a wireless communication system and is used to carry uplink data. The PDSCH and PUSCH may be scheduled by downlink control information (DCI). In the current new radio (NR) system, various DCI formats are defined for scheduling the PDSCH or PUSCH. To meet different scheduling requirements, the specific information and / or size included in the DCI of different DCI formats are different.

[0003] In NR, the concept of a control resource set (CORESET) is introduced. CORESET is a time-frequency resource corresponding to a monitoring occasion of a PDCCH, and a search space (SS) defines a monitoring occasion and a search operation within the monitoring occasion. That is, a PDCCH configuration is a combination of CORESET and SS.

[0004] One serving cell can configure one or more bandwidth parts (BWPs) for uplink and downlink, respectively. Although the CORESET and SS are configured in the downlink bandwidth part (DL BWP), the configured CORESET and SS are indexed in the entire serving cell. One BWP can configure multiple CORESETs and SSs. Except for the CORESET with index #0, the configuration of one CORESET includes the index of the CORESET. Except for the SS with index #0, the configuration of one SS includes the index of the SS and the index of the CORESET corresponding to the SS. One CORESET can be associated with multiple SSs, that is, the configurations of different SSs can include the same CORESET index. According to the above configuration, the terminal device can grasp the combination of the CORESET and the SS and determine the PDCCH configuration.

[0005] In order to transmit one DCI, the network device needs to perform processing such as Cyclic Redundancy Check (CRC attachment), channel coding, rate matching, scrambling, modulation, etc. on the DCI payload of the DCI, and then map the DCI payload to a physical resource corresponding to one PDCCH candidate. Accordingly, the terminal device monitors the PDCCH candidates to receive the DCI.

[0006] The above description of the background art is merely for the purpose of more clearly and completely explaining the configurations of the present invention and for the understanding of those skilled in the art, and should not be construed as meaning that these configurations are well known to those skilled in the art just because they are described in the background art of the present invention. Summary of the Invention [Problem to be solved by the invention]

[0007] Currently, radio resource control configures a carrier (cell) to perform self-scheduling or cross-carrier scheduling. Self-scheduling means that the PDSCH and / or PUSCH on one carrier is scheduled by the DCI transmitted on the carrier. Cross-carrier scheduling means that the PDSCH and / or PUSCH on one carrier (cell) is scheduled by the DCI transmitted on another carrier (cell).

[0008] Currently, including the cases of self-scheduling and cross-carrier scheduling, one DCI only supports scheduling one serving cell. In order to reduce the burden of DCI monitoring on the terminal device and reduce power consumption and complexity, the NR system supports scheduling PDSCHs and / or PUSCHs of multiple serving cells via one DCI. However, currently, there is no specific scheme on how to support scheduling PDSCHs and / or PUSCHs of multiple serving cells via one DCI. For example, when one DCI schedules multiple serving cells, there is no specific scheme on how to determine which PDCCH candidate to monitor to detect DCI transmitted in the PDCCH candidate.

[0009] In view of at least one of the above problems, embodiments of the present invention provide a data receiving method, a data transmitting method and an apparatus. [Means for solving the problem]

[0010] One aspect of an embodiment of the present invention provides a data receiving device, which is applied to a terminal device, including: a processing unit that assigns a PDCCH candidate to a first search space, where the first search space is used for scheduling cells in a first set; and a receiving unit that receives DCI in the first search space, where the DCI is used for scheduling at least two cells in the first set.

[0011] In one aspect of an embodiment of the present invention, a data transmission device applied to a network device is provided, the device including: a transmitter unit that transmits DCI in a first search space, the first search space being used for scheduling cells in a first set, the DCI being used for scheduling at least two cells in the first set, and the first search space being assigned a PDCCH candidate for transmitting the DCI.

[0012] In one aspect of an embodiment of the present invention, a communication system is provided that includes a network device and / or a terminal device, the network device including a data transmitting device described in the above aspect, and the terminal device including a data receiving device described in the above aspect.

[0013] One of the advantageous effects of the embodiment of the present invention is as follows: When scheduling multiple cells through one DCI, it is possible to support scheduling multiple cells through one DCI by determining which PDCCH candidate is monitored in which search space, thereby reducing the burden of DCI monitoring on the terminal device, and reducing power consumption and complexity.

[0014] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail to show how the principles of the present invention can be employed. However, the scope of the embodiments of the present invention is not limited to these. The embodiments of the present invention include modifications, alterations, and equivalents within the spirit and scope of the appended claims.

[0015] Features described and / or illustrated in one embodiment may be used in the same or similar manner in one or more other embodiments and may be combined with or substituted for features in other embodiments.

[0016] It should be noted that in this text, the term "including / having" means the presence of a feature, element, step or component, and does not exclude the presence or addition of one or more other features, elements, steps or components. [Brief description of the drawings]

[0017] Elements and features depicted in one drawing and one embodiment of the present invention may be combined with elements and features shown in one or more drawings or embodiments, and in the drawings, like reference numerals may designate corresponding elements in multiple drawings and may designate corresponding elements used in more than one embodiment. [Figure 1] 1 is a schematic diagram of a communication system according to an embodiment of the present invention. [Figure 2A] 1 is a schematic diagram of a CORESET according to an embodiment of the present invention. [Figure 2B] 1 is a schematic diagram of a PDCCH monitoring occasion according to an embodiment of the present invention. [Diagram 3] A schematic diagram of a CCE configuration of a serving cell according to an embodiment of the present invention. [Figure 4] 2 is a schematic diagram of an example of a data receiving method according to an embodiment of the present invention; [Diagram 5] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 6]FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 7] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 8] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 9] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 10] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 11] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 12] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 13] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 14] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 15] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 16] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 17] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 18] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 19] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 20] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 21] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 22] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 23] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Figure 24] FIG. 2 is a schematic diagram of a first PDCCH candidate set according to an embodiment of the present invention; [Diagram 25] FIG. 2 is a schematic diagram showing the meaning of each parameter according to an embodiment of the present invention. [Figure 26] 2 is a schematic diagram of allocation of PDCCH candidates according to an embodiment of the present invention; [Figure 27] 2 is a schematic diagram of allocation of PDCCH candidates according to an embodiment of the present invention; [Figure 28] 2 is a schematic diagram of an example of a data transmission method according to an embodiment of the present invention; [Figure 29] 1 is a schematic diagram of a data receiving device according to an embodiment of the present invention. [Diagram 30] 1 is a schematic diagram of a data transmission device according to an embodiment of the present invention. [Diagram 31] FIG. 2 is a schematic diagram of a terminal device according to an embodiment of the present invention. [Diagram 32] 1 is a schematic diagram of a network device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The above and other features of the present invention will become apparent from the following description. In the specification and drawings, specific embodiments of the present invention are disclosed in detail, and some of the embodiments in which the principles of the present invention can be adopted are shown. However, the present invention is not limited to the described embodiments. The present invention includes all modifications, variations, and equivalents within the scope of the appended claims. Each embodiment of the present invention will be described below with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0019] In embodiments of the present invention, the terms "first", "second", etc. are used in the title to distinguish different elements, but do not represent the spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any and all combinations of one or more of the terms listed in the associated list. The terms "including", "comprising", "having", etc. refer to the presence of listed features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.

[0020] In the embodiments of the present invention, the singular forms "a", "the", etc., include the plural forms and should be understood broadly as "one kind" or "a class", and are not limited to "one". In addition, the term "said" should be understood to include both the singular and the plural forms, unless the context clearly indicates otherwise. In addition, the term "described in" should be understood to mean "described at least in part", and the term "based on" should be understood to mean "based at least in part on", unless the context clearly indicates otherwise.

[0021] In an embodiment of the present invention, the term "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as, for example, Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0022] Additionally, communications between devices in a communication system may occur according to any stage of communication protocols, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G, New Radio (NR), and / or other currently known or future developed communication protocols.

[0023] In the embodiment of the present invention, the term "network device" refers to a device in a communication system, for example, allowing a terminal device to access the communication system and providing a service to the terminal device. The network device may include, but is not limited to, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobility management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0024] Here, the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), and a 5G base station (gNB), etc., as well as a Remote Radio Head (RRH), a Remote Radio Unit (RRU), a relay, or a low power node (e.g., femto, pico, etc.). Also, the term "base station" may include some or all of these functions, and each base station may provide communication coverage for a particular geographic area. The term "cell" may refer to a base station and / or its coverage area depending on the context in which the term is used.

[0025] In the embodiment of the present invention, the term "User Equipment" (UE) or "Terminal Equipment" (TE) refers to an apparatus that accesses a communication network and receives a network service via, for example, a network device. The terminal apparatus may be fixed or mobile, and may be called a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, etc.

[0026] Here, the terminal device may include, but is not limited to, a cellular phone, a personal digital assistant (PDA), a wireless modulation / demodulation device, a wireless communication device, a handheld device, a machine-type communication device, a laptop computer, a cordless phone, a smartphone, a smart watch, a digital camera, and the like.

[0027] Also, for example, in a scenario such as the Internet of Things (IoT), the user equipment may be a monitoring or measuring instrument or device, and may include, but is not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, an industrial wireless device, a surveillance camera, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, and the like.

[0028] Furthermore, the term "network side" or "network device side" refers to the side of a network, which may be a base station or may include one or more of the network devices mentioned above. The term "user side" or "terminal side" or "terminal device side" refers to the side of a user or terminal, which may be a UE or may include one or more of the terminal devices mentioned above. In this specification, unless otherwise specified, "device" may refer to a network device or may refer to a terminal device.

[0029] In the following description, unless confusion occurs, the terms "uplink control signal" and "uplink control information (UCI)" or "physical uplink control channel (PUCCH)" may be replaced with each other, and the terms "uplink data signal" and "uplink data information" or "physical uplink shared channel (PUSCH)" may be replaced with each other. The terms "cell", "carrier", "serving cell", and "carrier component" may be replaced with each other. The terms "downlink control signal" and "downlink control information (DCI)" or "physical downlink control channel (PDCCH)" may be replaced with each other, and the terms "downlink data signal" and "downlink data information" or "physical downlink shared channel (PDSCH)" may be replaced with each other. DCI and DCI format may be replaced with each other.

[0030] Also, the transmission or reception of the PUSCH may be understood as the transmission or reception of uplink data carried by the PUSCH, the transmission or reception of the PUCCH may be understood as the transmission or reception of uplink information (e.g., UCI) carried by the PUCCH, the transmission or reception of the PRACH may be understood as the transmission or reception of a preamble carried by the PRACH, the transmission or reception of the PDSCH may be understood as the transmission or reception of downlink data carried by the PDSCH, and the PDCCH may be understood as the transmission or reception of downlink information (e.g., DCI) carried by the PDCCH.

[0031] In the embodiment of the present invention, the higher layer signaling may be, for example, radio resource control (RRC) signaling. The RRC signaling may include, for example, an RRC message, and may include, for example, a master information block (MIB), system information, a dedicated RRC message, or an RRC information element (RRC IE), or an information field (or an information field) included in the RRC message or the RRC information element. The higher layer signaling may be, for example, a medium access control (MAC) signaling, or may be referred to as a MAC control element (MAC CE). Note that the present invention is not limited thereto.

[0032] The following describes an embodiment scenario of the present invention with reference to an example, but the present invention is not limited thereto.

[0033] Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present invention, and illustrates an example of a terminal device and a network device. As shown in Fig. 1, a communication system 100 may include a network device 101 and terminal devices 102 and 103. For convenience of explanation, Fig. 1 illustrates two terminal devices and one network device as an example, but the embodiment of the present invention is not limited thereto.

[0034] In an embodiment of the present invention, existing services or future services may be performed between the network device 101 and the terminal devices 102, 103. For example, these services may include, but are not limited to, enhanced Mobile Broadband (eMBB), massive Machine Type Communication (mMTC), and Ultra-Reliable and Low-Latency Communication (URLLC) and related communications for terminal devices with reduced capabilities.

[0035] 1 shows that both of the two terminal devices 102 and 103 are located within the coverage area of ​​the network device 101, but the present invention is not limited to this. Both of the two terminal devices 102 and 103 may not be located within the coverage area of ​​the network device 101, or one of the terminal devices 102 may be located within the coverage area of ​​the network device 101 and the other terminal device 103 may be located outside the coverage area of ​​the network device 101.

[0036] The PDCCH candidates are determined based on the CORESET configuration and the SS configuration.

[0037] The following provides an exemplary description of a method for determining a CORESET configuration, an SS configuration, and PDCCH candidates.

[0038] The CORESET configuration is as follows:

[0039] A CORESET configuration other than CORESET#0 may include at least the following information fields:

[0040] The controlResourceSetId indicates a CORESET index.

[0041] The frequencyDomainResources indicates CORESET resources in the frequency domain.

[0042] duration indicates the CORESET duration, for example, persistent symbol data.

[0043] cce-REG-MappingType indicates how to map CCEs to REGs, for example, whether to use interleaved or non-interleaved mapping.

[0044] precoderGranularity indicates the mapping method of DMRS in PDCCH. For example, if "precoderGranularity" indicates allContiguousRBs, the DMRS associated with the corresponding PDCCH is a wideband mapping, i.e., the DMRS associated with the PDCCH occupies all REGs in CORESET. Otherwise, the DMRS associated with the corresponding PDCCH is a narrowband mapping, i.e., the DMRS associated with the PDCCH occupies only the REGs occupied by the PDCCH.

[0045] It should be noted that other related information fields in the configuration of CORESETs other than CORESET#0 may refer to conventional techniques, and the present invention is not limited to this.

[0046] FIG. 2A is a schematic diagram of a CORESET according to an embodiment of the present invention. A control channel element (CCE) allocated by a PDCCH channel resource is a basic element constituting a PDCCH. In NR, one CCE occupies six REGs, and each REG corresponds to 12 resource elements (REs) on a physical resource block (RB). Here, one REG has nine PDCCH data REs and three DRMS ​​REs, so that REG0 and REG1 shown in FIG. 2 have 18 PDCCH data REs and six DRMS ​​REs. Note that, for mapping between CCEs and REGs, methods such as interleaved mapping and non-interleaved mapping can be used, but the specific mapping method may refer to the prior art, and the present invention is not limited thereto.

[0047] Moreover, the number of CCEs in the PDCCH is called an aggregation level or aggregation level (AL). When specifically transmitting the PDCCH, the network device 101 may determine the aggregation level to be used to transmit the control information according to the actual wireless channel environment. For example, when the wireless channel environment is relatively bad, a larger aggregation level can be used to obtain better demodulation performance. When the wireless channel environment is relatively good, a smaller aggregation level is used.

[0048] As shown in FIG. 2A, for example, the relevant parameters in the CORESET configuration are: (outside 1) TIFF2025514116000002.tif10170, (outside 2) TIFF2025514116000003.tif10170. That is, assuming that one CORESET occupies six RBs in the frequency domain and two symbols in the time domain, and AL=2 for a total of two CCEs in the current CORESET, one transmitted PDCCH includes two CCEs, and when mapping to CCE-to-REG, the interleaved mapping scheme and the non-interleaved mapping scheme are the same.

[0049] The SS configuration is as follows:

[0050] The configuration of an SS other than SS#0 may include at least the following information fields:

[0051] The searchSpaceId indicates the SS index.

[0052] The monitoringSlotPeriodicityAndOffset indicates the PDCCH monitoring period (unit: slot) and the slot offset from the start of the monitoring period to when the search space is actually detected.

[0053] The controlResourceSetId indicates the CORESET index corresponding to the SS index.

[0054] The duration indicates the number of consecutive PDCCH monitoring slots in a PDCCH monitoring cycle, and the PDCCH monitoring slot means a time slot in which the PDCCH candidate needs to be monitored.

[0055] monitoringSymbolsWithinSlot indicates the starting symbol of a PDCCH monitoring occasion in one PDCCH monitoring slot, for example, there are 14 bits in total, the most significant bit indicates the first symbol, and so on.

[0056] nrofCandidates indicates the number of PDCCH candidates, for example, the number of corresponding PDCCH candidates for different ALs.

[0057] searchSpaceType indicates the type of search space, for example, common search space (CSS) or UE-specific search space (USS).

[0058] FIG. 2B is a schematic diagram of a PDCCH monitoring occasion according to an embodiment of the present invention. FIG. 2B is a schematic diagram of a PDCCH monitoring occasion according to an embodiment of the present invention.

[0059] As shown in FIG. 2B, it is assumed that:

[0060] The CORESET corresponding to the controlResourceSetId contains two symbols.

[0061] Periodicity: 4 slots Duration: 2 slots monitoringSymbolsWithinSlot:10001000100000.

[0062] The terminal device can determine a PDCCH monitoring occasion.

[0063] For related information fields in the configuration of SSs other than SS#0, reference may be made to conventional techniques, and the present invention is not limited to this.

[0064] For one search space configuration and its associated CORESET configuration, the terminal device can determine in which time-frequency domain resource to monitor the PDCCH. In order to reduce the complexity of the UE blindly detecting the PDCCH, the search space configuration is further provided with configuration information for configuring the number of PDCCH candidates. Furthermore, when the UE blindly detects the PDCCH / DCI in one PDCCH monitoring occasion of one search space, it can determine that one or more aggregation levels respectively correspond to multiple PDCCH candidates, and each PDCCH candidate corresponds to a CCE.

[0065] For example, the active DL BWP with subcarrier spacing μ in serving cell f, slot n s,f μ For p, the PDCCH candidates of aggregation level L in the search space (or search space set) s of the associated CORESET p (Outside 3) The CCE index corresponding to TIFF2025514116000004.tif8170 is given by the following formula:

[0066]

number

[0067] for example, (Outside 11) TIFF2025514116000013.tif10170, (Outside 12) Assuming that TIFF2025514116000014.tif10170, the number of PDCCH candidates in each AL (where it is assumed that only AL=4,8 is configured in each serving cell) of each serving cell (there are two serving cells in total) is as shown in Table 1. According to equation (1), the CCE index corresponding to each PDCCH candidate corresponding to each serving cell is as shown in Figure 3.

[0068] In the prior art, one serving cell can schedule two serving cells, but one DCI can only schedule one serving cell. For example, (Outside 13) TIFF2025514116000015.tif11170, (Outside 14) Assuming that TIFF2025514116000016.tif9170, the number of PDCCH candidates in each AL of each serving cell (there are two serving cells in total) is as shown in Table 1. The CCEs of the PDCCH candidates corresponding to each serving cell are as shown in Figure 3. Table 1. Number of AL PDCCH candidates for each serving cell

[0069] [Table 1] The above method is designed for one DCI to schedule only one cell, and configures and determines a corresponding PDCCH candidate set for each serving cell, and transmits / receives DCI for scheduling the PDSCH / PUSCH of each serving cell on the PDCCH candidate in the corresponding set.

[0070] In the technology for monitoring PDCCH candidates, a limit on the number (maximum number) of PDCCH candidates and a limit on the number (maximum number) of non-overlapping CCEs in one time unit are defined for a single cell. The time unit is, for example, one slot, a span (including some symbols in one slot), or one slot group (including multiple slots). As an example, if the first time unit is one slot, the number (maximum number) of PDCCH candidates is (Outside 15) TIFF2025514116000018.tif11170 limit and number of non-overlapping CCEs (maximum number) (Outside 16) There is a restriction of TIFF2025514116000019.tif10170, where μ represents the SCS of the PDCCH, and slot means one slot corresponding to μ. If the number of configured PDCCH candidates and the number of non-overlapping CCEs exceed the above restrictions, it is called overbooking. The terminal device discards the highest indexed search space set until the PDCCH candidate number and non-overlapping CCE number restrictions are met. In the R15 NR system, slot-level PDCCH candidate number and non-overlapping CCE number restrictions are adopted, that is, the network device or terminal device determines whether the above restrictions are met in one slot, and if not, discards the highest indexed search space set in this slot. In the R16 / R17 NR system, interval-level / slot group-level PDCCH candidate number and non-overlapping CCE number restrictions may also be adopted. In response, the network device or terminal device determines whether the corresponding PDCCH candidate number (maximum number) limit and non-overlapping CCE number (maximum number) limit are met within one span / slot group, and if not met, discards the search space set with the highest index within this span / slot group.

[0071] The NR system supports single carrier or carrier aggregation (CA / DC). Currently, since only the case where one DCI can schedule only one cell is considered, the number of PDCCH candidates and the number of non-overlapping CCEs are statistically or assigned for each cell. The following is an example based on the slot level. For example, for one cell, within one slot (PDCCH monitoring slot), the terminal device performs the following in order of decreasing CSS and USS index (from the viewpoint of priority, it has nothing to do with the order of specific monitoring time domains): (Outside 17) TIFF2025514116000020.tif13170 or less unique CCE monitors (Outside 18) PDCCH candidates equal to or smaller than TIFF2025514116000021.tif13170 are monitored. That is, for the one cell, the terminal device preferentially monitors CSS(s) and USS(s) with smaller index values, and the total number of PDCCH candidates included in the USS, USS(s) with smaller index values ​​than the USS, and CSS is determined based on the number of PDCCH candidates in one USS and the number of non-overlapping CCEs. (Outside 19) TIFF2025514116000022.tif14170 and / or the total number of non-overlapping CCEs (outside 20) If it exceeds TIFF2025514116000023.tif14170, the PDCCH candidate of the USS is not monitored, or the PDCCH candidate is not monitored in the USS, or the PDCCH candidate is not allocated for the USS (for the USS).

[0072] However, the above monitoring method is for the case where one DCI can schedule only one cell. Currently, when one DCI schedules multiple serving cells, there is no way to determine which PDCCH candidate to monitor in which search space (set).

[0073] The following will be explained with reference to examples.

[0074] <Example 1> The embodiment of the present invention provides a data receiving method, which is described from the terminal device side.

[0075] 4 is a schematic diagram of an example of a data receiving method according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

[0076] Step 401: The terminal device allocates a PDCCH candidate to a first search space, where the first search space is used to schedule cells in a first set.

[0077] Step 402: The terminal device receives DCI in the first search space, where the DCI is used to schedule at least two cells in the first set.

[0078] In some embodiments, the terminal device receives search space configuration information and CORESET configuration information sent by the network device, and determines a PDCCH candidate set included in a first search space or a PDCCH candidate set included in a CORSET corresponding to the first search space based on the search space configuration information and the CORESET configuration information, that is, determines a CCE index (CCE start position and CCE number) in a CORSET of each PDCCH candidate in a PDCCH candidate set. The first search space is used to schedule cells in the first set. The first search space is in a cell in the first set or is not in any of the cells in the first set. At least one PDCCH candidate in the PDCCH candidate set is used to transmit the DCI, and the DCI schedules at least two cells in the first set. The first search space may be a terminal device specific search space (USS) or a common search space (CSS).

[0079] In some embodiments, the first search space is used to schedule cells in the first set, which means that the UE monitors the PDCCH candidates in the first search space to receive DCI for scheduling one or more cells in the first set without exceeding the PDCCH candidate number limit and the non-overlapping CCE limit. Accordingly, the network device can map or transmit the DCI for scheduling one or more cells in the first set on the PDCCH candidates in the first search space. After determining the PDCCH candidate set included in the first search space, in step 401, it is necessary to assign PDCCH candidates to the first search space. For example, determine whether to assign a PDCCH candidate to the first search space (i.e., whether to monitor a PDCCH candidate in the first search space, or whether to monitor a PDCCH candidate in the first search space), and / or determine the number N of PDCCH candidates assigned to the first search space (or the number N of PDCCH candidates monitored in the first search space), or determine whether to monitor a PDCCH candidate in a PDCCH candidate set, or determine which PDCCH candidate in a PDCCH candidate set to monitor. In step 402, the assigned PDCCH candidate corresponding to the first search space is monitored to receive DCI mapped to the PDCCH candidate and transmitted.

[0080] For the sake of convenience, the concepts of a set, a group, a combination, and a cell in the present invention will be explained below.

[0081] In some embodiments, the first set is all cells of a first search space for scheduling, and may include a scheduling cell and at least one scheduled cell (i.e., the first search space is on one cell in the first set, and the one cell is the scheduling cell), or may include at least two scheduled cells (i.e., the first search space is not present in any cell in the first set). If it includes a scheduling cell, the scheduling cell may schedule a PDSCH and / or a PUSCH on the scheduled cell, or the scheduling cell may schedule its own PDSCH and / or PUSCH (self-scheduling). The one cell in which the first search space is located may be a primary cell or a secondary cell, and the scheduling cell and the scheduled cell may be a primary cell or a secondary cell, and the embodiment of the present invention is not limited thereto.

[0082] In some embodiments, used to schedule a cell may be referred to as used to schedule a PDSCH and / or a PUSCH on the cell, or DCI received on a cell may be referred to as scheduling a PDSCH and / or a PUSCH on the cell. Alternatively, DCI used to schedule a cell may be referred to as DCI used to schedule a PDSCH and / or a PUSCH on the cell. DCI used to schedule a PDSCH may be referred to as a downlink assignment (DL assignment), and DCI used to schedule a PUSCH may be referred to as an uplink grant (UL grant).

[0083] In some embodiments, the first cell means any cell in the first set, the second cell means a first reference cell in the first set, the first reference cell being a reference cell used to allocate PDCCH candidates, and the different second cell being related or not related to the same cell. The third cell means a second reference cell in the first set, the second reference cell being a reference cell used to determine the cells of the first set, and the different third cell being related or not related to the same cell. The third cell, the second cell and the first cell are the same or different. The first group and the second group mean subsets (divided in any way) of the first set, and the first group and the second group may be understood as specific subsets. Cells in one combination may be scheduled simultaneously (at one time) with the same DCI, a first group and / or a first combination is used in allocating PDCCH candidates and a second group and / or a second combination is used in determining PDCCH candidates, the first group and the second group are the same or different, and the first combination and the second combination are the same or different. A group or combination may include one or more cells, and the different first groups may or may not have common parts, the different first combinations may or may not have common parts, the different second groups may or may not have common parts, and the different second combinations may or may not have common parts. The different second groups or second combinations may or may not include the same cells.

[0084] The following describes the PDCCH candidate set (including a total of M4 PDCCH candidates) included in the first search space.

[0085] In some embodiments, the PDCCH candidate set includes one or more first PDCCH candidate sets, and different first PDCCH candidate sets include or do not include PDCCH candidates having the same CCE. Here, each first PDCCH candidate set is for a single cell or a cell group. For example, all the first PDCCH candidate sets are for a single cell, or all the first PDCCH candidate sets are for a cell group, or some PDCCH candidate sets are for a single cell, and other PDCCH candidate sets are for a cell group.

[0086] For example, the first PDCCH candidate set is for the first set, or the first cell in the first set, or the third cell in the first set, or the second group in the first set, or the second combination in the first set or the second group, or the second combination set. Alternatively, the first PDCCH candidate set is divided into the first set, or the first cell in the first set, or the third cell in the first set, or the second group in the first set, or the second combination in the first set or the second group, or the second combination set as the granularity.

[0087] For example, a first set may refer to all PDCCH candidates corresponding to the first set, and / or all first cells in the first set, and / or all third cells in the first set, and / or all second groups in the first set, or all second combinations in the first set or all second groups.

[0088] For the first cell, it is meant to include all PDCCH candidates corresponding to the first cell.

[0089] The term for the third cell means including all PDCCH candidates corresponding to the third cell.

[0090] The second group means including all PDCCH candidates corresponding to the second group, or all first cells in the second group, or all third cells in the second group, or the second combination in the second group.

[0091] A reference to a second combination in a first set or second group is meant to include all candidates that correspond to the second combination.

[0092] Here, the PDCCH candidate corresponding to the first cell refers to a PDCCH candidate for transmitting DCI for scheduling the first cell. Wherein, scheduling the first cell includes scheduling the first cell alone and / or scheduling the first cell and other cells in the first set simultaneously. The PDCCH candidates corresponding to different first cells may or may not have a common part.

[0093] A PDCCH candidate corresponding to a third cell means a candidate for transmitting DCI for scheduling the third cell and / or a cell associated with the third cell. Here, scheduling the third cell and / or a cell associated with the third cell includes scheduling only the third cell and / or a cell associated with the third cell, and / or simultaneously scheduling the third cell and / or a cell associated with the third cell and other cells in the first set. PDCCH candidates corresponding to different third cells may or may not have a common part.

[0094] A PDCCH candidate corresponding to the first set means a candidate for transmitting DCI for scheduling a cell in the first set, or a candidate for transmitting DCI for scheduling the first set, or a candidate for transmitting DCI for scheduling any second combination of the first set, or a candidate for transmitting DCI for scheduling any second set of the first set.

[0095] The PDCCH candidate corresponding to the second group means a PDCCH candidate for transmitting DCI for scheduling a cell in the second group, or a PDCCH candidate for transmitting DCI for scheduling the second group, or a PDCCH candidate for transmitting DCI for scheduling any second combination of the second group, where scheduling a cell in the second group includes scheduling only the cell in the second group and / or simultaneously scheduling the cell in the second group and other cells in the first set.

[0096] The PDCCH candidate corresponding to the second combination means a PDCCH candidate for transmitting DCI for scheduling the second combination.

[0097] The following is an example description with reference to the drawings.

[0098] (1) The following describes the first PDCCH candidate set for the first cell with reference to Figures 5 to 8.

[0099] As shown in FIG. 5 to FIG. 8, the PDCCH candidate set of the first search space includes four first PDCCH candidate sets. First PDCCH candidate set 0: includes a candidate for transmitting DCI for scheduling Cell 0 (first cell 0). First PDCCH candidate set 1: includes a PDCCH candidate for transmitting DCI for scheduling Cell 1 (first cell 1). First PDCCH candidate set 2: includes a PDCCH candidate for transmitting DCI for scheduling Cell 2 (first cell 2). First PDCCH candidate set 3: includes a PDCCH candidate for transmitting DCI for scheduling Cell 3 (first cell 3). The above sets have a common part.

[0100] As shown in Figure 5 and Figure 6, when one PDCCH candidate corresponds to multiple first cells, the PDCCH candidate transmits DCI for scheduling multiple cells simultaneously.As shown in Figure 7 and Figure 8, when one PDCCH candidate corresponds to one first cell, the PDCCH candidate transmits DCI for scheduling one cell or combination of multiple cells, and the one cell or combination is not any cell or any combination of cells among multiple cells.

[0101] (2) The following describes the first PDCCH candidate set for the third cell with reference to Figures 9 to 12.

[0102] As shown in FIG. 9 to FIG. 10, the PDCCH candidate set of the first search space includes two first PDCCH candidate sets. First PDCCH candidate set 0: Includes candidate for transmitting DCI for scheduling Cell 0 (third cell 0) and the cell associated therewith. First PDCCH candidate set 1: Includes candidate for transmitting DCI for scheduling Cell 2 (third cell 1) and the cell associated therewith. Cells associated with different third cells may or may not have a common part. The above sets may or may not have a common part.

[0103] As shown in Figure 9, if the above sets have a common part, one third cell and its associated cells are always scheduled simultaneously. That is, cell0&1 are always scheduled simultaneously, and cell2&3 are always scheduled simultaneously, that is, the third cells cannot be scheduled individually via a single DCI. As shown in Figure 10, if the above sets have no common part, one third cell and its associated cells may be scheduled simultaneously or individually. That is, the third cell or its associated cells may be scheduled individually via one DCI.

[0104] As shown in Figures 11 and 12, the PDCCH candidate set of the first search space includes a first PDCCH candidate set. The first PDCCH candidate set is a PDCCH candidate for transmitting DCI for scheduling Cell 0 (third cell 0) and its associated cells.

[0105] (3) The first PDCCH candidate set for the second combination will be described below with reference to FIGS.

[0106] As shown in FIG. 13 and FIG. 14, the PDCCH candidate set of the first search space includes two first PDCCH candidate sets. First PDCCH candidate set 0: includes a candidate for transmitting DCI for scheduling combination 0. First PDCCH candidate set 1: includes a candidate for transmitting DCI for scheduling combination 1. Sets 0 and 1 may or may not have a common part. As shown in FIG. 13, there is a common part, and combination 0 includes cell 0&1, and combination 1 includes cell 2&3, and as shown in FIG. 14, there is no common part, and combination 0 includes cell 0&2, and combination 1 includes cell 1&3.

[0107] As shown in Figure 15, the PDCCH candidate set of the first search space shown in the figure below includes one first PDCCH candidate set. The first PDCCH candidate set is a PDCCH candidate for transmitting DCI for scheduling a cell of combination 0, and combination 0 includes cell 0 & 1 & 2 & 3.

[0108] (4) The first PDCCH candidate set for the second group will be described below with reference to FIGS.

[0109] As shown in FIG. 16 to FIG. 20, the PDCCH candidate set of the first search space shown in the lower figure includes two first PDCCH candidate sets. First PDCCH candidate set 0: includes a PDCCH candidate for transmitting DCI for scheduling a cell in group 0. First PDCCH candidate set 1: includes a PDCCH candidate for transmitting DCI for scheduling a cell in group 1. Sets 0 and 1 may or may not have a common part.

[0110] As shown in Figures 16 to 18, sets 0 and 1 have a common part. Here, the PDCCH candidate in the common part transmits a cell in the union for scheduling group 0 (cell 0&1) and group 1 (cell 2&3). As shown in Figure 16, one cell in group 0 and one cell in group 1 may be scheduled by the same DCI, and as shown in Figures 17 and 18, one cell in group 0 and one cell in group 1 cannot be scheduled by the same DCI.

[0111] As shown in Figures 19 and 20, sets 0 and 1 have no common part. As shown in Figure 19, group 0 includes cell 0 & 2, and group 1 includes cell 1 & 3. As shown in Figure 20, the PDCCH candidate in set 0 is used to transmit DCI for scheduling cell or group 0, and the PDCCH candidate in set 1 is used to transmit DCI for scheduling cell or group 1.

[0112] As shown in Figures 21 and 22, the PDCCH candidate set of the first search space includes one first PDCCH candidate set. The first PDCCH candidate set includes a PDCCH candidate for transmitting DCI for scheduling cells of group 0 (cell 0 & 1 & 2 & 3).

[0113] (5) The following describes the first PDCCH candidate set for the first cell and the second combination with reference to FIG.

[0114] As shown in FIG. 23, the PDCCH candidate set of the first search space includes four first PDCCH candidate sets. First PDCCH candidate set 0: includes a PDCCH candidate for transmitting DCI for scheduling Cell 0 (first cell 0). First PDCCH candidate set 1: includes a PDCCH candidate for transmitting DCI for scheduling Cell 1 (first cell 1). First PDCCH candidate set 2: includes a PDCCH candidate for transmitting DCI for scheduling combination 0 (Cell 0&1). First PDCCH candidate set 3: includes a PDCCH candidate for transmitting DCI for scheduling combination 1 (Cell 2&3). The above sets may or may not have a common part.

[0115] (6) The following describes the first PDCCH candidate set for the first cell and the second group with reference to FIG.

[0116] As shown in FIG. 24, the PDCCH candidate set of the first search space includes four first PDCCH candidate sets. First PDCCH candidate set 0: includes a PDCCH candidate for transmitting DCI for scheduling Cell 0 (first cell 0). First PDCCH candidate set 1: includes a PDCCH candidate for transmitting DCI for scheduling Cell 1 (first cell 1). First PDCCH candidate set 2: includes a PDCCH candidate for transmitting DCI for scheduling group 0. First PDCCH candidate set 3: includes a PDCCH candidate for transmitting DCI for scheduling group 1. The above sets may or may not have a common part. Groups 0 and 1 may or may not include Cell 0 and / or 1. For example, when group 0 includes Cell 0, and a PDCCH candidate in the first PDCCH candidate set corresponding to group 0 is not used to individually schedule Cell 0, or has a common portion with the first PDCCH candidate set corresponding to Cell 0, only the PDCCH candidate in the common portion may be used to individually schedule Cell 0.

[0117] Although (1) to (6) have been described above as an example, and aggregation level L=2 has been taken as an example, the embodiments of the present invention are not limited to this, and the description thereof will be omitted here.

[0118] The above describes that when determining a PDCCH candidate set, each first PDCCH candidate set is divided into a single cell and / or a cell group as a granularity. For example, the first PDCCH candidate set is for the first set, or the first cell in the first set, or the third cell in the first set, or the second group in the first set, or the second combination in the first set, or the second combination set.

[0119] When allocating PDCCH, a single cell or a cell group may be allocated as a granularity. For example, PDCCH candidates may be allocated to one or more of the following sets: a first set, a first cell (in the first set), a second cell (in the first set), a first group (in the first set), a first combination (in the first set or in the first set), and a set of the first combination (in the first set or in the first group).

[0120] In some embodiments, the dimension for determining the PDCCH candidate is the same as the dimension for allocating the PDCCH candidate. For example, when the first set is used as a dimension to determine the first PDCCH candidate set, the first set is used as a dimension to allocate the PDCCH candidate. However, this is merely an example, and the embodiments of the present invention are not limited thereto.

[0121] In some embodiments, the terminal device assigns the PDCCH candidate based on one or more of the first parameter, the second parameter, the third parameter, the fourth parameter, the fifth parameter, and the sixth parameter, where the first parameter and / or the second parameter and / or the third parameter and / or the fourth parameter and / or the fifth parameter and / or the sixth parameter are for a first set, a first cell in the first set, a second cell in the first set, a first group in the first set, a first combination in the first set or the first group, or a first combination set (in the first set or the first group).

[0122] The above parameters will be explained below.

[0123] In some embodiments, the first parameter M1 represents the number of first PDCCH candidates M1, and the number of first PDCCH candidates is the number of allocatable PDCCH candidates. The first parameter M1 is for the first set, the first cell in the first set, the second cell in the first set, the first group in the first set, the first combination in the first set or the first group, or the first combination set (in the first set or the first group). For example, the first parameter is determined with the granularity of the first set, the first cell in the first set, the second cell in the first set, the first group in the first set, the first combination in the first set or the first group, or the first combination set (in the first set or the first group).

[0124] In some embodiments, the second parameter M2 represents the number of second PDCCH candidates, and the number of second PDCCH candidates is the number of PDCCH candidates allocated before the first search space. The second parameter M2 is for the first set, the first cell in the first set, one second cell in the first set, the first group in the first set, the first combination in the first set or the first group, or the first combination set (in the first set or the first group). For example, the second parameter may be the number of PDCCH candidates allocated before the first search space on the first set, the first cell in the first set, one second cell in the first set, the first group in the first set, the first combination in the first set, or the first combination set (in the first set or the first group), and the second parameter M2 is equal to the sum of the number of PDCCH candidates allocated to each search space before the first search space.

[0125] In some embodiments, the third parameter M3 represents a third PDCCH candidate number, and the third PDCCH candidate number is the number of PDCCH candidates that can be assigned to the first search space. The third parameter M3 is for the first set, the first cell in the first set, one second cell in the first set, the first group in the first set, the first combination in the first set or the first group, or the set of first combinations (in the first set or the first group). For example, the third parameter M3 may be equal to the number of PDCCH candidates remaining after subtracting the number of PDCCH candidates assigned before the first search space from the number of assignable PDCCH candidates.

[0126] In some embodiments, the fourth parameter M4 represents a fourth PDCCH candidate number, and the fourth PDCCH candidate number is the number of PDCCH candidates included in the first search space. The fourth parameter M4 is for the first set, the first cell in the first set, one second cell in the first set, the first group in the first set, the first combination in the first set or the first set, or the first combination set (in the first set or the first group).

[0127] The following describes a method for counting the number of PDCCH candidates (fourth parameter) in the PDCCH candidate set included in the first search space.

[0128] In some embodiments, the terminal device assigns a PDCCH candidate to a first cell or a second cell or a first group in the first set, and at least one cell in the first cell or the second cell or the first group is included in a plurality of second groups or a second combination, and a fourth parameter for the first cell or the second cell or the first group is determined based on the first PDCCH candidate set corresponding to the plurality of second groups or the second combination.

[0129] For example, the fourth parameter is equal to the number of PDCCH candidates in a union (second PDCCH candidate set) of the first PDCCH candidate sets corresponding to a plurality of second groups or second combinations, i.e., for PDCCH candidates having the same CCE in each first PDCCH candidate set, the fourth parameter is increased by 1 when counting. Alternatively, the fourth parameter is equal to the total number of PDCCH candidates in each first PDCCH candidate set corresponding to a plurality of second groups or second combinations, and is counted for PDCCH candidates having the same CCE in each first PDCCH candidate set.

[0130] In some embodiments, the terminal device assigns a PDCCH candidate to a first group in a first set, the first group including a plurality of second groups or a second combination, and the fourth parameter for the first group is determined based on a first PDCCH candidate set corresponding to the plurality of second groups or the second combination.

[0131] For example, the fourth parameter is equal to the number of PDCCH candidates in a union (second PDCCH candidate set) of the first PDCCH candidate sets corresponding to a plurality of second groups or second combinations, i.e., for PDCCH candidates having the same CCE in each first PDCCH candidate set, the fourth parameter is increased by 1 when counting. Alternatively, the fourth parameter is equal to the total number of PDCCH candidates in each first PDCCH candidate set corresponding to a plurality of second groups or second combinations, and is counted for PDCCH candidates having the same CCE in each first PDCCH candidate set.

[0132] The following describes the above-mentioned first parameter, second parameter, third parameter, and fourth parameter with reference to FIG. 25. As shown in FIG. 25, USS2 is a first search space, CSS(s) (including one or more), USS0, and USS1 are search spaces before the first search space, the number of PDCCH candidates allocated for CSS is N1, the number of PDCCH candidates allocated for USS0 is N2, and the number of PDCCH candidates allocated for USS1 is N3. The first parameter M1 is the number of allocatable PDCCH candidates, and is determined for the first set, the first cell in the first set, one second cell in the first set, the first group in the first set, and the first combination in the first set or the first group. The second parameter M2 is the number of PDCCH candidates already allocated before the first search space, i.e., equal to N1+N2+N3. The third parameter M3 is the number of PDCCH candidates that can be assigned to the first search space, ie, equal to M1 - M2. The fourth parameter M4 is the number of PDCCH candidates included in the determined first search space.

[0133] In some embodiments, the first parameter may be configured, or the fifth parameter is used to determine the first parameter, and / or the sixth parameter is used to determine the fourth parameter, the fifth and sixth parameters being the same or different. The fifth and / or sixth parameters are predefined or configured. The fifth and / or sixth parameters are associated with the first group and / or the first combination.

[0134] In some embodiments, the terminal device allocates PDCCH candidates to the first group. The terminal device determines a first parameter for the first group based on the fifth parameter and / or the number of cells in the first group and / or the number of PDCCHs that can be allocated to the cells. For example, the number of PDCCHs that can be allocated to one cell (outside 21) TIFF2025514116000024.tif11170 (predefined or configured) includes a first parameter for the first group determined based on a number N of cells in the first group, (outside 22) TIFF2025514116000025.tif9170 (Equation (2)), or the fifth parameter is a parameter associated with the first group, and the first parameter is determined for the first group based on the fifth parameter. For example, the fifth parameter may be a scaling factor associated with the first group that is predefined or configured, and the scaling factor may be (outside 23) TIFF2025514116000026.tif10170 and / or (outside 24) The first parameter is determined based on the product of TIFF2025514116000027.tif10170. For example, the first parameter is (Outside 25) TIFF2025514116000028.tif12170 or (outside 26) TIFF2025514116000029.tif13170, where P1 is the number of cells in the first group, and a i is the value of the fifth parameter corresponding to cell i in the first group. For example, the fifth parameter may be (outside 27) TIFF2025514116000030.tif11170 or (outside 28) TIFF2025514116000031.tif9170 may be a predefined or configured scaling factor for adjusting the adjusted (outside 29) TIFF2025514116000032.tif9170 or (Outside 30) The first parameter can be determined by substituting TIFF2025514116000033.tif10170 into equation (2). In the above, μ represents the subcarrier spacing SCS of the PDCCH, and T Unit means one time unit corresponding to μ, and the time unit is, for example, one slot, one span (including some symbols in one slot), or one slot group (including multiple slots). (Outside 31) TIFF2025514116000034.tif10170 is a time unit in the predefined time unit T Unit represents the maximum number of PDCCH candidates of one cell in (Outside 32) TIFF2025514116000035.tif10170 is the time unit T determined based on the cell configuration (e.g., the number of downlink cells configured). Unit This indicates the maximum number of PDCCH candidates of one cell in the

[0135] In some embodiments, the terminal device allocates a PDCCH candidate to the first combination. The terminal device determines a first parameter for the first combination based on the fifth parameter and / or the number of cells in the first combination and / or the number of PDCCHs that can be allocated to one cell. The method of determination is the same as that of allocating a PDCCH candidate to the first group, and the description thereof is omitted here.

[0136] The method of determining the fourth parameter based on the sixth parameter is similar, for example, the sixth parameter is a scaling coefficient, and the description thereof is omitted here.

[0137] In the above embodiment, the first parameter, the second parameter, the third parameter, and the fourth parameter are all related parameters that represent the number of PDCCH candidates, but the embodiment of the present invention is not limited to this.The first parameter, the second parameter, the third parameter, and the fourth parameter may be parameters that represent the number of non-overlapping CCEs, and the above-mentioned number of PDCCH candidates may be replaced with the number of non-overlapping CCEs, and the description thereof will be omitted here.

[0138] In some embodiments, the method may further include a step of the terminal device reporting a capability of the terminal device, the capability including the number of cells of the PDCCH that the terminal device can monitor and / or the number of the first groups and / or the number of the first combinations. The network device may refer to the capability of the terminal device when performing related configuration. For example, the network device may: (Outside 33) TIFF2025514116000036.tif10170, (Outside 34) When configuring TIFF2025514116000037.tif9170, the fifth parameter, and the sixth parameter, the capabilities of the terminal device may be referenced.

[0139] The following describes how to allocate PDCCH candidates.

[0140] In some embodiments, if the third parameter of the first search space is equal to or greater than the fourth parameter, the terminal device monitors the PDCCH candidates in the first search space. For example, the third parameter of the first set, the first cell in the first set, one second cell in the first set, the first group in the first set, or the first combination in the first set is equal to or greater than the fourth parameter. Thus, the PDCCH candidates can be monitored in the first search space.

[0141] For example, if M4 is less than or equal to M3 (e.g., the number of remaining assignable PDCCH candidates is greater than or equal to the number of PDCCH candidates included in the first search space and / or the number of remaining assignable non-overlapping CCEs is greater than or equal to the number of non-overlapping CCEs included in the first search space), PDCCH candidates may be monitored in the first search space, i.e., M4 PDCCH candidates for monitoring are assigned to the first search space.

[0142] In some embodiments, when the third parameter of the first search space is smaller than the fourth parameter, the terminal device monitors the PDCCH candidate in the first search space or does not monitor the PDCCH candidate in the first search space. For example, the third parameter for the first set, the first cell in the first set, one second cell in the first set, the first group in the first set, or the first combination in the first set is equal to or greater than the fourth parameter, and the terminal device monitors the PDCCH candidate in the first search space or does not monitor the PDCCH candidate in the first search space.

[0143] For example, if M4 is greater than M3 (e.g., the number of remaining allocatable PDCCH candidates is smaller than the number of PDCCH candidates included in the first search space, and / or the number of remaining allocatable non-overlapping CCEs is smaller than the number of non-overlapping CCEs included in the first search space), do not monitor PDCCH candidates in the first search space. That is, do not allocate PDCCH candidates for monitoring to the first search space, or allocate zero PDCCH candidates to the first search space. Figure 26 is a schematic diagram of allocation of PDCCH candidates. As shown in FIG. 26, USS2 is a first search space, CSS, USS0, and USS1 are search spaces before the first search space, the number of PDCCH candidates already allocated for CSS is N1, the number of PDCCH candidates already allocated for USS0 is N2, the number of PDCCH candidates already allocated for USS1 is N3, the number of PDCCH candidates allocated before the first search space is N1+N2+N3=M2, the third parameter M3=M1-M2, M3 is smaller than M4, and PDCCH candidates are not monitored in USS2.

[0144] For example, when the terminal device monitors a PDCCH candidate in the first search space, the terminal device monitors the third parameter PDCCH candidate in the first search space. That is, when M4 is greater than M3 (for example, the number of remaining allocatable PDCCH candidates is smaller than the number of PDCCH candidates included in the first search space, and / or the number of remaining allocatable non-overlapping CCEs is smaller than the non-overlapping CCEs included in the first search space), the terminal device may monitor the PDCCH candidates in the first search space, that is, the number of M3 PDCCH candidates for monitoring may be allocated to the first search space, or the terminal device may monitor the M3 PDCCH candidates in the first search space. Figure 27 is a schematic diagram of allocation of PDCCH candidates. As shown in Figure 27, USS2 is the first search space, CSS, USS0 and USS1 are search spaces before the first search space, the number of PDCCH candidates allocated for CSS is N1, the number of PDCCH candidates allocated for USS0 is N2, the number of PDCCH candidates allocated for USS1 is N3, and the number of PDCCH candidates already allocated before the first search space is N1 + N2 + N3 = M2. The third parameter M3 = M1 - M2, M3 is smaller than M4, and PDCCH candidates are monitored in USS2, but only M3 PDCCH candidates in USS2 are monitored.

[0145] According to this embodiment, when scheduling multiple cells via one DCI, it is possible to support scheduling multiple cells via one DCI by determining which PDCCH candidate is to be monitored in which search space, thereby reducing the burden of DCI monitoring on the terminal device and reducing power consumption and complexity.

[0146] <Example 2> The embodiment of the present invention provides a data transmission method, and will be described from the perspective of a network device. Descriptions of parts that overlap with the first embodiment will be omitted.

[0147] 28 is a schematic diagram of an example of a data transmission method according to an embodiment of the present invention. As shown in FIG. 28, the method includes the following steps:

[0148] Step 2801: A network device sends a DCI in a first search space, the first search space is used to schedule cells in a first set, and the DCI is used to schedule at least two cells in the first set.

[0149] In some embodiments, the first search space is assigned a PDCCH candidate for transmitting DCI, for example, for one or more of the first set, the first cell (in the first set), the second cell (in the first set), the first group (in the first set), the first combination (in the first set or the first group), and the first combination set (in the first set or the first group).

[0150] For a method of allocating PDCCH candidates, reference may be made to embodiment 1. Step 2801 corresponds to 401 to 402 in embodiment 1, and description of overlapping contents will be omitted.

[0151] According to this embodiment, when scheduling multiple cells via one DCI, it is possible to support scheduling multiple cells via one DCI by determining which PDCCH candidate is to be monitored in which search space, thereby reducing the burden of DCI monitoring on the terminal device and reducing power consumption and complexity.

[0152] <Example 3> An embodiment of the present invention provides a data receiving device. The device may be, for example, a terminal device, or one or more elements or components configured in the terminal device. Descriptions of the same contents as those in the first embodiment will be omitted.

[0153] 29 is a schematic diagram of a data receiving device according to an embodiment of the present invention. As shown in FIG. 29, a data receiving device 2900 includes the following units:

[0154] The processing unit 2901 allocates a PDCCH candidate to a first search space, which is used to schedule cells in the first set.

[0155] The receiver 2902 receives DCI in the first search space, the DCI being used to schedule at least two cells in the first set.

[0156] In some embodiments, the first search space is in one cell in the first set of cells or in none of the cells in the first set of cells.

[0157] In some embodiments, the first search space includes a PDCCH candidate set, and at least one PDCCH candidate in the PDCCH candidate set is used to transmit DCI.

[0158] In some embodiments, the allocator allocates the PDCCH candidates to one or more of the first set, the first cell (in the first set), the second cell (in the first set), the first group (in the first set), the first combination (in the first set or the first group), or the first combination set (in the first set or the first group).

[0159] In some embodiments, the allocator allocates the PDCCH candidate based on one or more of the first parameter, the second parameter, the third parameter, the fourth parameter, the fifth parameter, and the sixth parameter.

[0160] In some embodiments, the first parameter and / or the second parameter and / or the third parameter and / or the fourth parameter and / or the fifth parameter and / or the sixth parameter are for a first set, a first cell (in the first set), a second cell (in the first set), a first group (in the first set), a first combination (in the first set or first group), or a first combination set (in the first set or first group).

[0161] In some embodiments, the first parameter represents a first number of PDCCH candidates, and the first number of PDCCH candidates is a number of allocatable PDCCH candidates; and / or The second parameter represents a second PDCCH candidate number, and the second PDCCH candidate number is the number of PDCCH candidates allocated before the first search space, and / or The third parameter represents a third PDCCH candidate number, and the third PDCCH candidate number is the number of PDCCH candidates that can be assigned to the first search space, and / or The fourth parameter represents the fourth number of PDCCH candidates, and the fourth number of PDCCH candidates is the number of PDCCH candidates included in the first search space.

[0162] In some embodiments, a fifth parameter is used to determine the first parameter and / or a sixth parameter is used to determine the fourth parameter, where the fifth parameter and the sixth parameter are the same or different.

[0163] In some embodiments, the fifth parameter and / or the sixth parameter are predefined or configured.

[0164] In some embodiments, the fifth parameter and / or the sixth parameter is associated with the first group and / or the first combination.

[0165] In some embodiments, the apparatus further comprises the following units:

[0166] A first determination unit (not shown) determines a first parameter for the first group based on the fifth parameter and / or the number of cells in the first group and / or the number of PDCCHs that can be allocated to the cells.

[0167] In some embodiments, the apparatus further comprises the following units:

[0168] A second determination unit (not shown) determines the first parameter for the first combination based on the fifth parameter and / or the number of cells in the first combination and / or the number of PDCCHs allocable to the cells.

[0169] In some embodiments, the PDCCH candidate sets included in the first search space include one or more first PDCCH candidate sets, where the first PDCCH candidate set is for the first set, or a first cell in the first set, or a third cell in the first set, or a second cell group in the first set, or a second combination of the first set or the second group.

[0170] In some embodiments, the third cell and the second cell are the same or different, and / or the second group and the first group are the same or different, and / or the second combination and the first combination are the same or different.

[0171] In some embodiments, the different second groups or second combinations may or may not include identical cells.

[0172] In some embodiments, the different third cells may or may not be related to the same cell.

[0173] In some embodiments, the two first PDCCH candidate sets may or may not include PDCCH candidates having the same CCE.

[0174] In some embodiments, the apparatus further comprises the following parts:

[0175] A reporting unit (not shown) reports the capabilities of the terminal device, including the number of cells and / or the number of first groups and / or the number of first combinations of PDCCHs that the terminal device can monitor.

[0176] In some embodiments, the allocator allocates PDCCH candidates to a first cell or a second cell or a first group in the first set, where at least one cell in the first cell or the second cell or the first group is included in a plurality of second groups or second combinations, and a fourth parameter for the first cell or the second cell or the first group is determined based on a first set of PDCCH candidates corresponding to the plurality of second groups or second combinations.

[0177] In some embodiments, the fourth parameter is equal to the number of PDCCH candidates in a union of the first PDCCH candidate sets corresponding to the plurality of second groups or second combinations, or the sum of the number of each PDCCH candidate in the first PDCCH candidate sets corresponding to the plurality of second groups or second combinations.

[0178] In some embodiments, the allocator allocates the PDCCH candidates to a first group in the first set, the first group including a plurality of second groups or second combinations, and the fourth parameter for the first group is determined based on a first set of PDCCH candidates corresponding to the plurality of second groups or second combinations.

[0179] In some embodiments, the fourth parameter is equal to the number of PDCCH candidates in a union of the first PDCCH candidate sets corresponding to the plurality of second groups or second combinations, or the sum of the number of each PDCCH candidate in the first PDCCH candidate sets corresponding to the plurality of second groups or second combinations.

[0180] In some embodiments, the apparatus further comprises the following units:

[0181] A first monitoring unit (not shown) monitors PDCCH candidates in the first search space when the third parameter of the first search space is greater than or equal to the fourth parameter (for the first set, the first cell (in the first set), the second cell (in the first set), the first group (in the first set), the first combination (in the first set or the first group), or the first combination set (in the first set or the first group).

[0182] In some embodiments, the apparatus further comprises the following units:

[0183] A first monitoring unit (not shown) monitors a PDCCH candidate in the first search space when the third parameter of the first search space is smaller than the fourth parameter, or does not monitor a PDCCH candidate in the first search space.

[0184] In some embodiments, when the terminal device monitors a PDCCH candidate in a first search space, the second monitoring unit monitors a third parameter number of PDCCH candidates in the first search space.

[0185] The above-mentioned embodiments are merely illustrative of the embodiments of the present invention, and the present invention is not limited thereto, and appropriate modifications may be made based on the above-mentioned embodiments. For example, each of the above-mentioned embodiments may be used alone, or one or more of the above-mentioned embodiments may be used in combination.

[0186] Although the above describes only the components or modules related to the present invention, the present invention is not limited thereto. The data receiving device 2900 may further include other components or modules. For specific contents of these components or modules, reference may be made to the related art.

[0187] Furthermore, for convenience of explanation, Fig. 29 only exemplarily illustrates the connection relationships or signal directions between various components or modules, but it is clear to those skilled in the art that various related technologies such as bus connections can be used. The above-mentioned various components or modules may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0188] According to this embodiment, when scheduling multiple cells via one DCI, it is possible to support scheduling multiple cells via one DCI by determining which PDCCH candidate is to be monitored in which search space, thereby reducing the burden of DCI monitoring on the terminal device and reducing power consumption and complexity.

[0189] <Example 4> An embodiment of the present invention provides a data transmission device. The device may be, for example, a network device, or one or more elements or components configured in the network device. Descriptions of the same contents as those in the second embodiment will be omitted.

[0190] 30 is a schematic diagram of a data transmission device according to an embodiment of the present invention. As shown in FIG. 30, a data transmission device 3000 includes the following units.

[0191] The transmitter 3001 transmits DCI in a first search space, the first search space is used to schedule cells in a first set, and the DCI is used to schedule at least two cells in the first set.

[0192] In some embodiments, the first search space is assigned a PDCCH candidate for transmitting the DCI, for example, the PDCCH candidate is assigned to one or more of the first set, the first cell (in the first set), the second cell (in the first set), the first group (in the first set), the first combination (in the first set or the first group), and the first combination set (in the first set or the first group).

[0193] For example, the method of allocating PDCCH candidates may refer to the embodiment, and the transmitting unit 3001 corresponds to the receiving unit 2902 in the third embodiment, and the description of the overlapping contents will be omitted.

[0194] The above-mentioned embodiments are merely illustrative of the embodiments of the present invention, and the present invention is not limited thereto, and appropriate modifications may be made based on the above-mentioned embodiments. For example, each of the above-mentioned embodiments may be used alone, or one or more of the above-mentioned embodiments may be used in combination.

[0195] Although only the components or modules related to the present invention have been described above, the present invention is not limited thereto. The data transmission device 3000 may further include other components or modules. For specific contents of these components or modules, reference may be made to related art.

[0196] Furthermore, for convenience of explanation, Fig. 30 only exemplarily illustrates the connection relationships or signal directions between various components or modules, but it is clear to those skilled in the art that various related technologies such as bus connections can be used. The above-mentioned various components or modules may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0197] According to this embodiment, when scheduling multiple cells via one DCI, it is possible to support scheduling multiple cells via one DCI by determining which PDCCH candidate is to be monitored in which search space, thereby reducing the burden of DCI monitoring on the terminal device and reducing power consumption and complexity.

[0198] <Example 5> An embodiment of the present invention further provides a communication system, and may refer to FIG. 1. Description of the same contents as those in the first to fourth embodiments will be omitted.

[0199] In some embodiments, the communication system 100 may include at least a terminal device 102 and a network device 101 .

[0200] In some embodiments, the aspects of the terminal device 102 may refer to the terminal device 3100, and the aspects of the network device 101 may refer to the network device 3200, and the description thereof will be omitted here.

[0201] An embodiment of the present invention further provides a network device, which may be, for example, a base station, but the present invention is not limited thereto and may be other network devices.

[0202] Fig. 32 is a schematic diagram of a network device according to an embodiment of the present invention. As shown in Fig. 32, the network device 3200 may include a processor 3210 (e.g., a central processing unit (CPU)) and a memory 3220, and the memory 3220 is connected to the processor 3210. The memory 3220 may store various data, and further stores an information processing program 3230, and executes the program 3230 under the control of the processor 3210.

[0203] For example, the processor 3210 may execute a program to realize the data transmission method described in the second embodiment.

[0204] Also, as shown in Fig. 32, the network device 3200 may further include a transceiver 3240 and an antenna 3250. The functions of the above members are similar to those of the prior art, and the description thereof will be omitted here. It is not necessary for the network device 3200 to include all the units shown in Fig. 32. Also, the network device 3200 may further include units not shown in Fig. 32, and may refer to the prior art.

[0205] The embodiment of the present invention further provides a terminal device, but the present invention is not limited thereto and may be other devices.

[0206] Fig. 31 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in Fig. 31, the terminal device 3100 may include a processor 3110 and a memory 3120, where the memory 3120 stores data and programs and is connected to the processor 3110. It should be noted that this figure is exemplary, and other types of structures may be used to supplement or replace this structure to realize communication functions or other functions.

[0207] For example, the processor 3110 may execute a program to realize the data receiving method described in the first embodiment.

[0208] Also, as shown in Fig. 31, the terminal device 3100 may further include a communication module 3130, an input unit 3140, a display 3150, and a power source 3160. Here, the functions of the above units are similar to those of the conventional technology, and the description thereof will be omitted here. It is not necessary for the terminal device 3100 to include all the units shown in Fig. 31. Also, the terminal device 3100 may further include units not shown in Fig. 31, and may refer to the conventional technology.

[0209] In an embodiment of the present invention, there is further provided a computer-readable program, which, when executed in a terminal device, causes the terminal device to execute the data receiving method according to the first embodiment.

[0210] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the program, when executed, causing a terminal device to execute the data receiving method described in embodiment 1.

[0211] An embodiment of the present invention further provides a computer-readable program, which, when executed in a network device, causes the network device to perform the data transmission method according to the second embodiment.

[0212] An embodiment of the present invention further provides a storage medium having a computer-readable program stored thereon, the program, when executed, causing a network device to perform the data transmission method described in embodiment 2.

[0213] The above-mentioned apparatus and method of the present invention may be realized by hardware or by a combination of hardware and software.The present invention relates to a computer readable program which, when executed by a logic unit, causes the logic unit to realize the above-mentioned apparatus or components, or to realize the above-mentioned various methods or steps.The present invention relates to a storage medium for storing the above-mentioned program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0214] Each processing method in each device described with reference to the embodiments of the present invention may be implemented by hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in the drawings, or one or more combinations of the functional block diagrams, may correspond to each software module in the flow of a computer program, or each hardware module. These software modules may correspond to each step shown in the drawings. These hardware modules may be realized by implementing these software modules in hardware, for example, using a field programmable gate array (FPGA).

[0215] The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor reads information from the storage medium or writes information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal, or in a memory card inserted in the mobile terminal. For example, if the device (e.g., a mobile terminal) uses a MEGA-SIM card or a large capacity flash memory device with a relatively large capacity, the software module may be stored in the MEGA-SIM card or the large capacity flash memory device.

[0216] One or more of the functional blocks and / or one or more combinations of functional blocks in the functional block diagrams illustrated in the drawings may be implemented in a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof to perform the functions described herein. One or more of the functional blocks and / or one or more combinations of functional blocks in the functional block diagrams illustrated in the drawings may be implemented in, for example, a combination of computing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors in combination with a DSP communication, or any other configuration.

[0217] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes may be made to the present invention without departing from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.

[0218] Furthermore, the following supplementary notes are disclosed regarding the embodiments including the above examples. (Appendix 1) A data receiving method applied to a terminal device, comprising: The terminal device assigns a PDCCH candidate to a first search space, the first search space being used to schedule cells in a first set; and a step of the terminal device receiving DCI in the first search space, the DCI being used to schedule at least two cells in the first set. (Appendix 2) 2. The method of claim 1, wherein the first search space is in one cell in the first cell set, or in none of the cells in the first cell set. (Appendix 3) 3. The method of claim 1 or 2, wherein the first search space includes a PDCCH candidate set, and at least one PDCCH candidate in the PDCCH candidate set is used to transmit the DCI. (Appendix 4) The method according to any one of Supplementary Notes 1 to 3, further comprising a step in which the terminal device assigns a PDCCH candidate to one or more of the first set, the first cell (in the first set), the second cell (in the first set), the first group (in the first set), the first combination (in the first set or the first group), and the first combination set (in the first set or the first group). (Appendix 5) The method according to any one of Supplementary Notes 1 to 5, further comprising a step of the terminal device allocating the PDCCH candidate based on one or more of a first parameter, a second parameter, a third parameter, a fourth parameter, a fifth parameter, and a sixth parameter. (Appendix 6) 6. The method of claim 5, wherein the first parameter and / or the second parameter and / or the third parameter and / or the fourth parameter and / or the fifth parameter and / or the sixth parameter are for the first set, the first cell (in the first set), the second cell (in the first set), the first group (in the first set), the first combination (in the first set or first group), or the first combination set (in the first set or first group). (Appendix 7) The first parameter represents a first number of PDCCH candidates, and the first number of PDCCH candidates is a number of allocatable PDCCH candidates, and / or The second parameter represents a second PDCCH candidate number, and the second PDCCH candidate number is the number of PDCCH candidates allocated before the first search space, and / or The third parameter represents a third PDCCH candidate number, and the third PDCCH candidate number is the number of PDCCH candidates that can be assigned to the first search space, and / or The method according to Supplementary Note 5 or 6, wherein the fourth parameter represents a fourth number of PDCCH candidates, and the fourth number of PDCCH candidates is a number of PDCCH candidates included in the first search space. (Appendix 8) 8. The method of claim 5, 6 or 7, wherein the fifth parameter is used to determine the first parameter and / or the sixth parameter is used to determine the fourth parameter, and the fifth parameter and the sixth parameter are the same or different. (Appendix 9) 9. The method of any of claims 5 to 8, wherein the fifth parameter and / or the sixth parameter are predefined or configured. (Appendix 10) 10. The method of any one of claims 5 to 9, wherein the fifth parameter and / or the sixth parameter relate to a first group and / or a first combination. (Appendix 11) The method according to any one of Supplementary Notes 4 to 10, further comprising a step of determining a first parameter for the first group based on the fifth parameter and / or the number of cells in the first group and / or the number of PDCCHs that can be assigned to cells, by the terminal device. (Appendix 12) The method according to any one of Supplementary Notes 4 to 10, further comprising a step of determining a first parameter for the first combination based on the fifth parameter and / or the number of cells in the first combination and / or the number of PDCCHs that can be assigned to cells, by the terminal device. (Appendix 13) The PDCCH candidate set included in the first search space includes one or a plurality of first PDCCH candidate sets, 13. The method of any of Supplementary Notes 1 to 12, wherein the first PDCCH candidate set is for the first set, or a first cell in the first set, or a third cell in the first set, or a second cell group in the first set, or a second combination in the first set or the second group. (Appendix 14) 14. The method of claim 13, wherein the third cell and the second cell are the same or different, and / or the second group and the first group are the same or different, and / or the second combination and the first combination are the same or different. (Appendix 15) 15. The method of claim 13 or 14, wherein the different second groups or second combinations may or may not contain identical cells. (Appendix 16) 14. The method of claim 13, wherein the different third cells are related or unrelated to the same cell. (Appendix 17) The method according to claim 13, wherein the two first PDCCH candidate sets include or do not include PDCCH candidates having the same CCE. (Appendix 18) The method of claim 1, further comprising a step of the terminal device reporting capabilities of the terminal device, the capabilities including the number of cells of PDCCH that the terminal device can monitor and / or the number of first groups and / or the number of first combinations. (Appendix 19) The method according to any one of Supplementary Notes 1 to 18, further comprising a step of the terminal device allocating a PDCCH candidate to a first cell or a second cell or a first group in the first set, wherein at least one cell in the first cell or the second cell or the first group is included in a plurality of second groups or second combinations, and a fourth parameter for the first cell or the second cell or the first group is determined based on a first PDCCH candidate set corresponding to the plurality of second groups or second combinations. (Appendix 20) The method according to claim 19, wherein the fourth parameter is equal to the number of PDCCH candidates in a union of first PDCCH candidate sets corresponding to the plurality of second groups or second combinations, or the total number of PDCCH candidates in each of the first PDCCH candidate sets corresponding to the plurality of second groups or second combinations. (Appendix 21) The method according to any one of Supplementary Notes 1 to 18, further comprising a step of: the terminal device allocating a PDCCH candidate to a first group in the first set, the first group including a plurality of second groups or a second combination, and a fourth parameter for the first group being determined based on a first PDCCH candidate set corresponding to the plurality of second groups or the second combination. (Appendix 22) The method of claim 21, wherein the fourth parameter is equal to the number of PDCCH candidates in a union of first PDCCH candidate sets corresponding to the plurality of second groups or second combinations, or the total number of PDCCH candidates in each of the first PDCCH candidate sets corresponding to the plurality of second groups or second combinations. (Appendix 23) The method according to any one of Supplementary Notes 1 to 18, further comprising a step in which the terminal device monitors a PDCCH candidate in the first search space when a third parameter of the first search space is equal to or greater than a fourth parameter (for the first set, the first cell (in the first set), the second cell (in the first set), the first group (in the first set), the first combination (in the first set or the first group), or the first combination set (in the first set or the first group). (Appendix 24) 19. The method of any one of Supplementary Notes 1 to 18, further comprising the step of: when a third parameter of the first search space is smaller than a fourth parameter, the terminal device monitors a PDCCH candidate in the first search space, or does not monitor a PDCCH candidate in the first search space. (Appendix 25) The method according to claim 24, wherein, when the terminal device monitors a PDCCH candidate in the first search space, the terminal device monitors a third parameter number of PDCCH candidates in the first search space. (Appendix 26) A data transmission method applied to a network device, comprising: A method comprising: a step of a network device transmitting DCI in a first search space, the first search space being used to schedule cells in a first set, the DCI being used to schedule at least two cells in the first set, and the first search space being assigned a PDCCH candidate for transmitting the DCI. (Appendix 27) The method of claim 26, further comprising allocating a PDCCH candidate to one or more of a first set, a first cell (in the first set), a second cell (in the first set), a first group (in the first set), a first combination (in the first set or the first group), and a first combination set (in the first set or the first group). (Appendix 28) A network device comprising: a memory having a computer program stored therein; and a processor, the processor configured to execute the computer program to realize the data transmission method according to claim 26 or 27. (Appendix 29) A terminal device including a memory in which a computer program is stored and a processor, the processor being configured to execute the computer program to realize the data receiving method described in any one of Supplementary Notes 1 to 25. (Appendix 30) A communication system comprising a terminal device according to claim 29 and / or a network device according to claim 28.

Claims

1. A data receiving device applied to a terminal device, comprising: A processing unit for allocating a PDCCH candidate to a first search space, the first search space being used for scheduling cells in a first set; a receiver for receiving DCI in the first search space, the DCI used to schedule at least two cells in the first set.

2. The apparatus of claim 1 , wherein the first search space includes a PDCCH candidate set, and at least one PDCCH candidate in the PDCCH candidate set is used to transmit the DCI.

3. 2. The apparatus of claim 1, wherein the processing unit assigns PDCCH candidates to one or more of the first set, a first cell (in the first set), a second cell (in the first set), a first group (in the first set), a first combination (in the first set or the first group), and a first combination set (in the first set or the first group).

4. 2. The apparatus of claim 1, wherein the processing unit assigns the PDCCH candidate based on one or more of a first parameter, a second parameter, a third parameter, a fourth parameter, a fifth parameter, and a sixth parameter.

5. 5. The apparatus of claim 4, wherein the first parameter and / or the second parameter and / or the third parameter and / or the fourth parameter and / or the fifth parameter and / or the sixth parameter are for the first set, a first cell (in the first set), a second cell (in the first set), a first group (in the first set), a first combination (in the first set or first group), or a first combination set (in the first set or first group).

6. The first parameter represents a first number of PDCCH candidates, the first number of PDCCH candidates being a number of allocatable PDCCH candidates; and / or The second parameter represents a second number of PDCCH candidates, the second number of PDCCH candidates being a number of PDCCH candidates allocated before the first search space; and / or the third parameter represents a third number of PDCCH candidates, the third number of PDCCH candidates being the number of PDCCH candidates that can be assigned to the first search space; and / or The apparatus of claim 4 , wherein the fourth parameter represents a fourth number of PDCCH candidates, the fourth number of PDCCH candidates being a number of PDCCH candidates included in the first search space.

7. 5. The apparatus of claim 4, wherein the fifth parameter is used to determine the first parameter and / or the sixth parameter is used to determine the fourth parameter, the fifth parameter and the sixth parameter being the same or different.

8. 4. The apparatus of claim 3, further comprising: a first determination unit configured to determine a first parameter for the first group based on the fifth parameter and / or a number of cells in the first group and / or a number of PDCCHs assignable to a cell.

9. 4. The apparatus of claim 3, further comprising: a second determination unit configured to determine a first parameter for the first combination based on the fifth parameter and / or a number of cells in the first combination and / or a number of PDCCHs assignable to a cell.

10. The PDCCH candidate set included in the first search space includes one or more first PDCCH candidate sets, 2. The apparatus of claim 1, wherein the first PDCCH candidate set is for the first set, or a first cell in the first set, or a third cell in the first set, or a second group of cells in the first set, or a second combination of the first set or the second group.

11. The apparatus of claim 10 , wherein the two first PDCCH candidate sets include or do not include PDCCH candidates having the same CCE.

12. The apparatus of claim 1, further comprising: a reporting unit configured to report capabilities of the terminal device, the capabilities including a number of cells of a PDCCH that the terminal device can monitor and / or a number of first groups and / or a number of first combinations.

13. 2. The apparatus of claim 1, wherein the processing unit assigns a PDCCH candidate to a first cell or a second cell or a first group in the first set, and at least one cell in the first cell or the second cell or the first group is included in a plurality of second groups or second combinations, and a fourth parameter for the first cell or the second cell or the first group is determined based on a first PDCCH candidate set corresponding to the plurality of second groups or second combinations.

14. 14. The apparatus of claim 13, wherein the fourth parameter is equal to a number of PDCCH candidates in a union of first PDCCH candidate sets corresponding to the plurality of second groups or second combinations, or a sum of a number of PDCCH candidates in each of the first PDCCH candidate sets corresponding to the plurality of second groups or second combinations.

15. 2. The apparatus of claim 1, wherein the processing unit assigns PDCCH candidates to a first group in the first set, the first group including a plurality of second groups or a second combination, and a fourth parameter for the first group is determined based on a first PDCCH candidate set corresponding to the plurality of second groups or the second combination.

16. 16. The apparatus of claim 15, wherein the fourth parameter is equal to a number of PDCCH candidates in a union of first PDCCH candidate sets corresponding to the plurality of second groups or second combinations, or a sum of a number of PDCCH candidates in each of the first PDCCH candidate sets corresponding to the plurality of second groups or second combinations.

17. 2. The apparatus of claim 1 , further comprising: a first monitoring unit configured to monitor a PDCCH candidate in the first search space when a third parameter of the first search space is greater than or equal to a fourth parameter (for the first set, a first cell (in the first set), a second cell (in the first set), a first group (in the first set), a first combination (in the first set or the first group), or a first combination set (in the first set or the first group).

18. 2. The apparatus of claim 1, further comprising: a second monitoring unit configured to monitor a PDCCH candidate in the first search space or not monitor a PDCCH candidate in the first search space if a third parameter of the first search space is smaller than a fourth parameter.

19. The apparatus according to claim 18, wherein, when the terminal device monitors a PDCCH candidate in the first search space, the second monitoring unit monitors a third parameter number of PDCCH candidates in the first search space.

20. A data transmission device applied to a network device, comprising:

1. An apparatus comprising: a transmitter for transmitting a DCI in a first search space, the first search space being used for scheduling cells in a first set, the DCI being used for scheduling at least two cells in the first set, the first search space being assigned a PDCCH candidate for transmitting the DCI.

Images