PDCCH blind detection limiting method, PDCCH blind detection limiting device, and readable storage medium

Abstract

This application discloses a PDCCH blind detection limitation method, a terminal and a network side device, which belong to the technical field of communication. The method includes: grouping a plurality of scheduling cells, the plurality of scheduling cells including at least one first cell supporting PDCCH blind detection limitation based on slot group; and determining PDCCH blind detection limitation information corresponding to each group according to a grouping result.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority to Chinese Patent Application No. 202011629326.2, filed in China on December 31, 2020, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of communications, and in particular to a method for limiting PDCCH blind detection, a terminal and a network side device. [Background technology]

[0003] When New Radio (NR) operates at higher frequencies (e.g., >52.6 GHz), the granularity of symbols and slots decreases due to the increase in subcarrier spacing (SCS). If the Physical Downlink Control Channel (PDCCH) monitoring capability is defined at the granularity of per slot or per span (one span contains multiple symbols), the complexity of the UE (User Equipment) implementation increases significantly.

[0004] Therefore, how to propose a method that can reduce the complexity of realizing PDCCH monitoring in UE is of great significance. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present application aim to provide a PDCCH blind detection limiting method, a terminal and a network side device, which can solve the problem of how to reduce the complexity of implementing PDCCH monitoring in a UE. [Means for solving the problem]

[0006] In order to solve the above technical problems, the present application is realized as follows.

[0007] In a first aspect, a method for limiting PDCCH blind detection applied to a terminal, comprising: A step of grouping a plurality of scheduling cells, the plurality of scheduling cells including at least one first cell supporting a physical downlink control channel (PDCCH) blind detection limit based on slot group; and determining PDCCH blind detection limitation information corresponding to each group based on the grouping result.

[0008] In a second aspect, a method for limiting PDCCH blind detection applied to a network side device, comprising: transmitting a physical downlink control channel (PDCCH) based on a PDCCH blind detection limitation; The PDCCH blind detection limit is A PDCCH blind detection limitation method is provided, which determines PDCCH blind detection limitation information corresponding to each group by grouping a plurality of scheduling cells and determining the PDCCH blind detection limitation information corresponding to each group based on a grouping result, wherein the plurality of scheduling cells includes at least one first cell that supports PDCCH blind detection limitation based on slot group.

[0009] In a third aspect, a PDCCH blind detection limiting device applied to a terminal, A grouping module used for grouping a plurality of scheduling cells, the plurality of scheduling cells including at least one first cell supporting a physical downlink control channel (PDCCH) blind detection limit based on slot group; A PDCCH blind detection limitation device is provided, the device comprising: a determining module used for determining PDCCH blind detection limitation information corresponding to each group according to a grouping result.

[0010] In a fourth aspect, a PDCCH blind detection limiting device applied to a network side device, A channel transmission module is used for transmitting a physical downlink control channel (PDCCH) based on a physical downlink control channel (PDCCH) blind detection limitation, The PDCCH blind detection limit is A PDCCH blind detection limitation device is provided, which determines PDCCH blind detection limitation information corresponding to each group by grouping a plurality of scheduling cells and determining the PDCCH blind detection limitation information corresponding to each group based on a grouping result, wherein the plurality of scheduling cells includes at least one first cell that supports PDCCH blind detection limitation based on a slot group.

[0011] In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or command stored in the memory and executable by the processor, the program or command implementing the steps of the method according to the first aspect when executed by the processor.

[0012] In a sixth aspect, there is provided a network side device comprising a processor, a memory, and a program or command stored in the memory and executable by the processor, the program or command realizing the steps of the method according to the second aspect when executed by the processor.

[0013] In a seventh aspect, there is provided a readable storage medium having a program or commands stored thereon, the program or commands, when executed by a processor, performing steps of the method according to the first aspect or performing steps of the method according to the second aspect.

[0014] In an eighth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled to each other, and the processor executing a program or command of a network side device to realize the method described in the first aspect or to realize the method described in the second aspect.

[0015] In a ninth aspect, there is provided a computer program product stored on a non-volatile storage medium and executed by at least one processor to effectuate the method according to the first aspect, or to effectuate the method according to the second aspect.

[0016] In a tenth aspect, an embodiment of the present application provides a communications device arranged to perform the steps of the method according to the first aspect or to perform the steps of the method according to the second aspect. Effect of the Invention

[0017] The PDCCH blind detection restriction method, terminal and network side equipment provided in the embodiments of the present application group scheduling cells and determine the blind detection restriction corresponding to each group according to the grouping result, which can effectively reduce the complexity of realizing PDCCH monitoring in the UE compared with the conventional technology that mechanically defines the PDCCH monitoring capability at the granularity of each slot or span, thereby obviously improving communication efficiency and reducing the power consumption of the UE, and is expected to be widely applied. [Brief description of the drawings]

[0018] [Figure 1] 1 is a block diagram of a wireless communication system provided in an embodiment of the present application. [Diagram 2] 1 is a schematic flow chart (part 1) of a PDCCH blind detection limiting method provided in an embodiment of the present application; [Diagram 3] A schematic diagram of a pattern of SCS and slot groups of a scheduling cell according to an embodiment of the present application. [Figure 4]FIG. 1 is a schematic diagram of slot group positions according to an embodiment of the present application (part 1). [Diagram 5] FIG. 2 is a schematic diagram (part 2) of slot group positions according to an embodiment of the present application. [Figure 6] FIG. 3 is a schematic diagram of slot group positions according to an embodiment of the present application (part 3). [Figure 7] FIG. 1 is a schematic diagram (part 1) of a slot group pattern according to an embodiment of the present application. [Figure 8] FIG. 2 is a schematic diagram (part 2) of a slot group pattern according to an embodiment of the present application. [Figure 9] 2 is a schematic flow chart (part 2) of a PDCCH blind detection limiting method provided in an embodiment of the present application; [Figure 10] FIG. 1 is a schematic diagram (part 1) of the configuration of a PDCCH blind detection limiting device provided in an embodiment of the present application; [Figure 11] FIG. 2 is a schematic diagram (part 2) of the configuration of a PDCCH blind detection limiting device provided in an embodiment of the present application; [Figure 12] FIG. 1 is a schematic diagram illustrating the configuration of a communication device that realizes an embodiment of the present application. [Figure 13] FIG. 2 is a schematic diagram of the hardware configuration of a terminal for implementing an embodiment of the present application. [Figure 14] FIG. 2 is a schematic diagram of the hardware configuration of a network side device for implementing an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] In the following, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application, and it is to be understood that the described embodiments are not all the embodiments but only some of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present application.

[0020] The terms "first", "second", etc. in the specification and claims of the present application are not intended to describe a particular order or sequence, but are intended to distinguish between similar objects. It should be understood that the terms used in this manner may be substituted for each other where appropriate, so that the embodiments of the present application may be performed in an order other than that shown or described herein, and that the objects distinguished by "first" and "second" are generally of one type, and do not limit the number of objects, for example, the first object may be one or more. In the specification and claims, "and / or" indicates at least one of the objects connected, and the symbol " / " generally indicates that the related objects before and after are in an "or" relationship.

[0021] It should be noted that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application can generally be used interchangeably, and the technology described can be used in the above-mentioned systems and wireless technologies, or in other systems and wireless technologies. However, in the following description, a New Radio (NR) system will be described for illustrative purposes, and NR terminology will be used in most of the following description, but these technologies may be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0022] FIG. 1 shows a block diagram of a wireless communication system applicable to the embodiment of the present application. The wireless communication system includes a terminal 11 and a network side device 12. Here, the terminal 11 may be called a terminal device or a user terminal (User Equipment, UE), and may be a terminal side device such as a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (also called a notebook computer), a personal digital assistant (PDA), a personal digital assistant, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (Mobile Internet Device, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc., and the wearable device includes a bracelet, an earphone, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side equipment 12 may be a base station or a core network, in which the base station may be called a Node B, an evolved Node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or any other suitable term in the above field, and as long as the same technical effect can be achieved, the base station is not limited to a specific technical term. In the embodiments of the present application, only a base station in an NR system is taken as an example, but it should be explained that the specific type of the base station is not limited.

[0023] In order to make the technical solutions provided in the embodiments of the present application more fully understood, the following contents are introduced below.

[0024] NR PDCCH BD / CCE Budget With respect to the total number of PDCCH candidates (candidate PDCCHs) of an SS with an SS ID of Sj corresponding to scheduling nCI, if there is a PDCCH candidate with a smaller number in the SS or a PDCCH candidate in an SS with a smaller SS ID that completely overlaps with the control channel element (Control Channel Element, CCE) of the PDCCH candidate, has the same scrambling, and has the same format and size of downlink control information (Downlink Control Information, DCI) in the SS, the candidate is not calculated within the PDCCH candidates for PDCCH monitoring.

[0025] For single cell operation, the maximum number of Blind Decoding (BD) PDCCH candidates (Per slot, Per serving cell) is as shown in Table 1.

[0026] [Table 1] CCEs are considered not to overlap when the following two conditions are satisfied: 1) Control-resource set (CORESET) indicators are different, and 2) The first symbols of PDCCH candidates corresponding to the CCEs are different.

[0027] For single-cell operation, the maximum number of non-overlapping CCEs per BD (per slot, per serving cell) is shown in Table 2.

[0028] [Table 2] For multi-cell operation, the slot granularity of per-slot scheduling depends on the SCS that schedules the cells.

[0029] For each scheduled cell, the slot determined by the SCS that schedules the cell is not expected to be greater than the Cmax value and the calculated Ctotal value, where Ctotal is calculated as follows:

[0030] This corresponds to the case where the total number of downlink cells configured by the UE is equal to or smaller than a predetermined value N_cell^cap, and there is only one PDCCH monitoring limit.

[0031] For a scheduling cell with an SCS of μ, the total number of PDCCH candidates of each scheduled cell in each slot with the reference SCS of μ does not exceed Table 1, and the number of non-overlapping CCEs does not exceed Table 2.

[0032] When the total number of downlink cells configured by the UE is greater than a predetermined value N_cell^cap, the PDCCH monitoring of the UE needs to satisfy two constraints.

[0033] For all scheduling cells with SCS μ, the UE does not expect the total number of PDCCH candidates and the total number of non-overlapping CCEs of these scheduling cells to exceed a certain limit, which is determined by the proportion of all small cells of the SCS.

[0034] For each scheduled cell, the SCS of the scheduling cell is μ, and the UE does not expect the number of PDCCH candidates and CCEs monitored in the scheduling cell to exceed the total number limit and the per-cell limit.

[0035] Hereinafter, a method for limiting PDCCH blind detection provided in an embodiment of the present application will be described in detail with reference to the drawings according to specific embodiments and application cases.

[0036] FIG. 2 is a schematic flow chart (part 1) of a PDCCH blind detection limitation method provided in an embodiment of the present application. As shown in FIG. 2, the embodiment of the present application is a PDCCH blind detection limitation method applied to a terminal, which includes: A step S210 of grouping a plurality of scheduling cells, the plurality of scheduling cells including at least one first cell supporting PDCCH blind detection limit based on slot group; and determining PDCCH blind detection limitation information corresponding to each group according to the grouping result (S220).

[0037] It should be mentioned that the above method may be executed by a terminal. Hereinafter, the technical solution of the present application will be described in detail by taking the above method executed by a terminal as an example.

[0038] First, the UE may group multiple scheduling cells according to a grouping rule, and after determining a grouping result, the UE may determine, for each group, PDCCH blind detection limitation information corresponding to the group.

[0039] Among the multiple scheduling cells grouped by the UE, the number of first cells may be one, three, five, etc., or all the scheduling cells may be first cells.

[0040] The PDCCH blind detection restriction method provided in the embodiments of the present application groups scheduling cells and determines the blind detection restriction corresponding to each group according to the grouping result, which can effectively reduce the complexity of realizing PDCCH monitoring in a UE compared with the conventional technology that mechanically defines the PDCCH monitoring capability at the granularity of each slot or span, thereby obviously improving communication efficiency and reducing the power consumption of the UE, and is expected to be widely applied.

[0041] In an embodiment, the PDCCH blind detection limitation method provided in the embodiment of the present application may further include: determining a slot group in the first cell to which the PDCCH blind detection limitation is applied according to the following manner: Determine the number of slots N or the set of slot numbers {Ni} included in the slot group to which the PDCCH blind detection limit is applied, and as can be understood, each slot group corresponds to one slot number N, and when there are multiple slot groups, there are multiple slot numbers N (N may be different values), and the multiple slot numbers N constitute the set of slot numbers {Ni}. Each element in the set of slot numbers {Ni} (the slot numbers N of different slot groups) may be similar to each other or different from each other.

[0042] Based on the determined number of slots N or the set of slot numbers {Ni}, the position of the slot group to which the PDCCH blind detection limit is applied is determined.

[0043] Optionally, the number of slots N or the set of slot numbers {Ni} may be obtained by one of the following methods 1 to 4.

[0044] In method 1, it is obtained by network arrangement.

[0045] According to actual needs, the network may allocate one slot number for each slot group according to, for example, the parameters (size, frequency, etc.) of the data to be transmitted, the time domain resource occupancy status, etc., thereby determining the number of slots N (when there is only one slot group) or the set of slot numbers {Ni} (when there are multiple slot groups) contained in the slot group.

[0046] In method 2, the downlink control information (DCI) time domain scheduling parameter is acquired based on the number of schedulable physical downlink shared channels (PDSCHs) or the number of slots.

[0047] The network may determine the number of slots N according to the number of PDSCHs or slots that can be scheduled by the DCI time domain scheduling parameter, where the number of slots N may correspond one-to-one to the number of schedulable PDSCHs or slots, or may have a predetermined ratio to the number of schedulable PDSCHs or slots, for example, the ratio may be 2:1. For example, when the number of schedulable PDSCHs or slots is four, the number of slots N may be eight.

[0048] The total number of schedulable PDSCHs or slots may be the number of slots included in different slot groups. Also, the maximum or minimum number of schedulable PDSCHs or slots according to the DCI time domain scheduling parameter may be the number of slots included in a slot group.

[0049] In the third method, the DCI time-domain scheduling parameter is obtained according to a capability parameter reported by the UE, which includes a number of slots N or a set of slot numbers {Ni}, or the DCI time-domain scheduling parameter includes the number of slots or the number of PDSCHs that can be scheduled.

[0050] The number of slots N or the set of slot numbers {Ni} may be determined according to a capability parameter reported by the UE to the network, where the capability parameter is a parameter related to the PDCCH monitoring capability of the UE.

[0051] The ability parameter may include a number of slots N or a set of slot numbers {Ni}. When there are a plurality of slot numbers N, all of the slot numbers N may be the numbers of slots included in different slot groups, or the maximum, minimum, median, or average value of all of the slot numbers N may be the number of slots included in a slot group.

[0052] The capability parameter may further include the number of PDSCHs or the number of slots that can be scheduled by a DCI time-domain scheduling parameter. All values ​​of the number of PDSCHs or the number of slots that can be scheduled by one DCI time-domain scheduling parameter may be the number of slots included in different slot groups. Also, the maximum, minimum, median, or average value of the number of PDSCHs or the number of slots that can be scheduled by one DCI time-domain scheduling parameter may be the number of slots included in a slot group.

[0053] After receiving the capability parameters reported by the UE, the network configures corresponding resources to the UE according to the capability parameters, so that the UE monitors the PDCCH.

[0054] In method 4, the number of slots is obtained by a number N of slots or a set of slot numbers {Ni} predefined in the protocol.

[0055] The UE and the network may further perform PDCCH monitoring or resource configuration, respectively, according to the number of slots N or the set of number of slots {Ni} predefined in the protocol according to the relevant provisions of the protocol.

[0056] As can be understood, the number of slots N or the set of slots {Ni} may be determined by further combining the above methods, provided that they do not violate each other. For example, the number of slots N or the set of slots {Ni} may be determined by combining the maximum or minimum values ​​of Method 2 and Method 3.

[0057] In the method for processing PDCCH monitoring capability provided in the embodiment of the present application, the number of slots or the set of number of slots can be determined according to the above various manners, so that the feasibility of realizing PDCCH blind detection is improved.

[0058] In one embodiment, the location of the slot group may be determined according to one of the following schemes I to IV.

[0059] In method I, the determination is made based on any consecutive N slots.

[0060] After determining the number of slots N or the set of slot numbers {Ni} of the slot group, the position of the slot group can be determined based on the determined number of slots N.

[0061] In Scheme I, the location of the slot group may be any of N consecutive slots. As shown in Figure 4, when the number of slots is 4, the location of the slot group may be any of four consecutive slots in subframes Subframe#0 and Subframe#1, i.e., slot group 1, slot group 2, slot group 3, etc. in Figure 4.

[0062] In scheme II, in a radio frame, radio subframe or slot bundling, a slot group is formed every N slots starting from the first slot, and the last group is the last slot of the radio frame, radio subframe or slot bundling, and the slot group pattern is repeated in each radio frame or radio subframe.

[0063] Here, a slot bundling is a unit having multiple consecutive slots, and the number of slots included in the slot bundling is equal to or greater than the number of slots included in the slot group.

[0064] In Scheme III, a slot configured by the network or reported by the UE is taken as a starting slot or a reference slot, and the position of a slot group is determined according to the starting slot or the reference slot and the number N of slots.

[0065] In scheme III, a slot configured by the network or reported to the network by the UE may be a start slot or a reference slot, and N consecutive or non-consecutive slots from the start slot or the reference slot may be the position of the slot group.

[0066] Furthermore, the reference slot may be used as a reference point, and the slot group may be located every N consecutive or non-consecutive slots from a slot that is a predetermined number before or after the reference slot. For example, the slot group may be located every four consecutive slots from a slot that is two slots away from the reference slot, i.e., the third slot after the reference slot.

[0067] As shown in FIG. 5, the first slot, slot#0, in subframe, Subframe#0, may be set as the starting slot, and every four consecutive slots from slot#0 may be set as one slot group, for example, slot group 1, slot group 2, slot group 3, etc.

[0068] As shown in FIG. 6, one slot in subframe Subframe #0 may be set as a reference slot, and every four consecutive slots from the reference slot may be set as one slot group, for example, slot group 1, slot group 2, slot group 3, etc.

[0069] In scheme IV, the slot group pattern is determined by the monitoring timing arranged in the search space SS.

[0070] Furthermore, the number of slots N in a slot group may be taken into account to determine the position of the slot group according to the monitoring timing configured in the SS. After the position of the slot group is determined, the pattern of the slot group in a radio frame, radio subframe, or slot bundling can be determined according to the position of each slot group.

[0071] In the method for processing the PDCCH monitoring capability provided in the embodiment of the present application, the position of the slot group is determined through the above various methods, so that the feasibility of implementing the PDCCH monitoring can be further improved.

[0072] In one embodiment, determining a pattern of slot groups according to monitoring timings arranged in the SS includes: and wherein the pattern of slot groups repeats in each radio frame or radio subframe or slot bundling; The starting point of the first slot group is the first slot with monitoring timing in a radio frame, radio subframe or slot bundling, and N slots from the starting point of the first slot group are considered to be the first slot group, the starting point of the next slot group is the first slot with monitoring timing that does not exist in any previous slot group, and N slots from the starting point of the next slot group are considered to be one slot group, and so on, until the last slot group ends at the end of the radio frame, radio subframe or slot bundling.

[0073] As shown in Fig. 7, dark colors represent monitoring timing. Slot group 1 is the first slot group in subframe Subframe#0, and its starting point is the first slot (fourth slot) with monitoring timing in subframe Subframe#0, and four slots starting from this slot constitute slot group 1. Slot group 2 is the second slot group in subframe Subframe#0, and its starting point is the first slot (16th slot) with monitoring timing that does not exist in slot group 1, and four slots starting from this slot constitute slot group 2.

[0074] Since the slot group pattern repeats in each radio frame or radio subframe or slot bundling, the slot group pattern in subframe Subframe#1 must match the slot group pattern in subframe Subframe#0, i.e., slot group 1' starts at the 4th slot in subframe Subframe#1 and the four slots starting from that slot constitute slot group 1', slot group 2' starts at the 16th slot in subframe Subframe#1 and the four slots starting from that slot constitute slot group 2',

[0075] In one embodiment, determining a pattern of slot groups according to monitoring timings arranged in the SS includes: The pattern of slot groups may be different in each radio frame or radio subframe; For each radio frame, radio subframe or slot bundling, the start point of the first slot group is the first slot with monitoring timing in the radio frame, radio subframe or slot bundling, N slots from the start of the first slot group are considered to be the first slot group, the start of the next slot group is the first slot with monitoring timing that does not exist in any previous slot group, N slots from the start of the next slot group are considered to be one slot group, and so on until the last slot group ends at the end of the radio frame, radio subframe or slot bundling.

[0076] As shown in Fig. 8, dark colors represent monitoring timing. Slot group 1 is the first slot group in subframe Subframe#0, its starting point is the first slot with monitoring timing in subframe Subframe#0, and the four slots starting from this slot constitute slot group 1, and slot group 2 is the second slot group in subframe Subframe#0, its starting point is the first slot with monitoring timing that is not in slot group 1, and the four slots starting from this slot constitute slot group 2.

[0077] Slot group 3 is the first slot group in subframe Subframe#1, its starting point is the first slot with monitoring timing in subframe Subframe#1, and the four slots from that slot constitute slot group 3. Slot group 4 is the second slot group in subframe Subframe#1, its starting point is the first slot with monitoring timing that is not in slot group 3, and the four slots from that slot constitute slot group 4.

[0078] 8, in subframe Subframe#0, slot group 1 starts from the fourth slot, and slot group 2 starts from the sixteenth slot. In subframe Subframe#1, slot group 3 starts from the sixth slot, and slot group 4 starts from the sixteenth slot. Thus, the slot group patterns differ between radio subframes Subframe#0 and Subframe#1.

[0079] In one embodiment, determining a pattern of slot groups according to monitoring timings arranged in the SS includes: The method may include determining a pattern of slot groups from a starting slot or a reference slot configured by the network or reported by the UE, or determining a pattern of slot groups from a starting slot or a source slot separated by a predetermined number of slots from the reference slot; The starting point of the first slot group is the start slot or the first slot having a monitoring timing after the starting point slot, N slots from the starting point of the first slot group are considered to be the first slot group, the starting point of the next slot group is the first slot having a monitoring timing that does not exist in any previous slot group, N slots from the starting point of the next slot group are considered to be one slot group, and the slot group pattern is determined in this order.

[0080] As can be seen, this embodiment differs from the embodiment shown in Figure 8 in that the starting point of the first slot group depends on the slots configured by the network or reported by the UE. After determining the starting point of the first slot group, the specific manner of forming subsequent slot groups may be the same as the embodiment shown in Figure 8, and a detailed description will be omitted here.

[0081] It should be noted that in this embodiment, the pattern of slot groups may be the same in each radio frame or radio subframe or slot bundling, or may be different in each radio frame or radio subframe or slot bundling, and the embodiments of the present application are not specifically limited thereto.

[0082] In one embodiment, the rule for grouping multiple scheduling cells may include any one or more of the following rules 1 to 7.

[0083] In rule 1, all scheduling cells that support slot group based PDCCH blind detection constraints and have the same subcarrier spacing SCS are grouped into one group.

[0084] As shown in FIGS. 3a to 3e, below, the rule 1 will be described in detail by taking the examples shown in FIGS. 3a to 3e.

[0085] It should be noted that each of Figures 3a to 3e shows one subframe of a scheduling cell, and "SG" indicates a slot group, where the dark part indicates the PDCCH monitoring timing.

[0086] As can be seen from Figures 3a to 3e, cells Cell 1, Cell 2, Cell 3, Cell 4 and Cell 5 each contain two slot groups, so cells Cell 1, Cell 2, Cell 3, Cell 4 and Cell 5 are scheduling cells that support PDCCH blind detection restriction based on slot group.

[0087] The SCS of cells Cell 1, Cell 2, Cell 3, and Cell 5 are all 480K, and the SCS of cell 4 is 960. Therefore, when scheduling cells with the same SCS are grouped into one group according to rule 1, the grouping result will be as follows:

[0088] First Group: {Cell 1, Cell 2, Cell 3, Cell 5} Second Group: {Cell 4} Rule 2 supports PDCCH blind detection restriction based on slot group, and groups all scheduling cells with the same SCS and the same number of slots in the slot group and / or the same minimum spacing between slot groups into one group.

[0089] Rule 2 will now be described in detail, also taking the example shown in Figures 3a to 3e.

[0090] When the scheduling cells with the same SCS and the same number of slots in the slot group are grouped into one group, the grouping result is as follows:

[0091] First group: {Cell 1, Cell 2, Cell 3} Second Group: {Cell 4} Third group: {Cell 5} If the scheduling cells with the same SCS and the same minimum interval between slot groups are grouped into one group, the grouping result is as follows:

[0092] First group: {Cell 1, Cell 2} Second group: {Cell 3} Third group: {Cell 4} Fourth Group: {Cell 5} If the scheduling cells with the same SCS, the same number of slots in the slot group, and the same minimum interval between the slot groups are grouped into one group, the grouping result is as follows:

[0093] First group: {Cell 1, Cell 2} Second group: {Cell 3} Third group: {Cell 4} Fourth Group: {Cell 5} Rule 3 supports PDCCH blind detection restriction based on slot group, and groups all scheduling cells with the same SCS and matching slot group patterns into one group.

[0094] Rule 3 will now be described in detail, again taking the example shown in Figures 3a to 3e.

[0095] It should be noted that the first slot group of both Cell 1 and Cell 2 starts at the 4th slot and ends at the 7th slot, and the second slot group of both Cell 1 and Cell 2 starts at the 17th slot and ends at the 20th slot, therefore, Cell 1 and Cell 2 have matching slot group patterns.

[0096] The result of grouping the scheduling cells according to rule 3 is as follows:

[0097] First group: {Cell 1, Cell 2} Second group: {Cell 3} Third group: {Cell 4} Fourth Group: {Cell 5} Rule 4 supports PDCCH blind detection restriction based on slot group, and groups all scheduling cells that satisfy the first condition into one group.

[0098] Here, the first condition is: The ratio of SCS to slot group size is the same, The ratio of the SCS to the sum of the size of the slot group and the minimum interval between the slot groups is the same.

[0099] Rule 4 will now be described in detail, also taking the example shown in Figures 3a to 3e.

[0100] Cells 1, 2, and 3 have an SCS of 480K and the size of the slot group is four slots, so the ratio of SCS to slot group size for cells 1, 2, and 3 is 480:4=120.

[0101] Cell 4 has an SCS of 960K and a slot group size of 8 slots, thus the ratio of SCS to slot group size of cell 4 is 960:8=120.

[0102] Cell 5 has an SCS of 480K and a slot group size of 8 slots, thus the ratio of SCS to slot group size for cell 5 is 480:8=60.

[0103] If the first condition is that the ratio of SCS to the size of the slot group is the same, the result of grouping the scheduling cells according to rule 4 is as follows:

[0104] First Group: {Cell 1, Cell 2, Cell 3, Cell 4} Second group: {Cell 5} The minimum spacing between slot groups in Cell 1 and Cell 2 is 9 slots, the minimum spacing between slot groups in Cell 3 is 11 slots, the minimum spacing between slot groups in Cell 4 is 22 slots, and the minimum spacing between slot groups in Cell 5 is 7 slots.

[0105] The ratio of the SCS of cells Cell 1 and Cell 2 to the sum of the slot group size and the minimum interval between slot groups is 480:(4+9)=480 / 13.

[0106] The ratio of the SCS of cell Cell 3 to the sum of the slot group size and the minimum interval between slot groups is 480:(4+11)=480 / 15=32.

[0107] The ratio of the SCS of cell Cell 4 to the sum of the slot group size and the minimum interval between slot groups is 960:(8+22)=960 / 30=32.

[0108] The ratio of the SCS of cell Cell 5 to the sum of the size of the slot group and the minimum interval between the slot groups is 480:(8+7)=480 / 15=32.

[0109] If the first condition is that the ratio of SCS to the sum of the size of the slot group and the minimum interval between the slot groups is the same, the result of grouping the scheduling cells according to rule 4 is as follows:

[0110] First group: {Cell 1, Cell 2} Second Group: {Cell 3, Cell 4, Cell 5} Rule 5 supports PDCCH blind detection restriction based on slot group, and groups all scheduling cells that meet the first condition and have matching slot group edges into one group.

[0111] Rule 5 will now be described in detail, also taking the example shown in Figures 3a to 3e.

[0112] It should be noted that a slot group edge refers to the position of the end slot of a slot group within the entire length of a radio frame or radio subframe or slot bundling (a unit having multiple consecutive slots, and the number of slots included in the slot bundling is equal to or greater than the number of slots included in the slot group).

[0113] Therefore, as can be seen from FIGS. 3a to 3e, the slot group edges of Cell 1 and Cell 2 match, and the slot group edges of Cell 3 and Cell 4 match.

[0114] As can be seen by looking at the result of grouping the scheduling cells according to rule 4, when the first condition is that the ratio of SCS to the size of the slot group is the same, the result of grouping the scheduling cells according to rule 5 is as follows:

[0115] First group: {Cell 1, Cell 2} Second Group: {Cell 3, Cell 4} Second group: {Cell 5} As can be seen by looking at the result of grouping the scheduling cells according to rule 4, when the first condition is that the ratio of the SCS to the sum of the size of the slot group and the minimum interval between the slot groups is the same, the result of grouping the scheduling cells according to rule 5 is as follows:

[0116] First group: {Cell 1, Cell 2} Second Group: {Cell 3, Cell 4} Second group: {Cell 5} Rule 6 supports slot-based PDCCH blind detection limitation and slot group-based PDCCH blind detection limitation, and groups all scheduling cells that satisfy the first condition into one group.

[0117] It should be noted that a scheduling cell that supports slot-based PDCCH blind detection limitation may be a scheduling cell that does not have a slot group in a radio frame or radio subframe or slot bundling.

[0118] Rule 6 will now be described in detail, again taking the example shown in Figures 3a-3e.

[0119] If the first condition is that the ratio of SCS to slot group size is the same, as can be seen from the analysis results of the ratio of SCS to slot group size of each scheduling cell above, the result of grouping the scheduling cells according to rule 6 is as follows:

[0120] First Group: {Cell 1, Cell 2, Cell 3, Cell 4} Second group: {Cell 5} If the first condition is that the ratio of the SCS to the sum of the slot group size and the minimum interval between the slot groups is the same, as can be seen from the analysis result of the ratio of the SCS of each scheduling cell above to the sum of the slot group size and the minimum interval between the slot groups, the result of grouping the scheduling cells according to rule 6 is as follows.

[0121] First group: {Cell 1, Cell 2} Second Group: {Cell 3, Cell 4, Cell 5} Rule 7 supports slot-based PDCCH blind detection limitation and slot group-based PDCCH blind detection limitation, and groups all scheduling cells that meet the first condition and have matching slot group edges into one group.

[0122] Rule 7 will now be described in detail, again taking the example shown in Figures 3a-3e.

[0123] As can be seen by looking at the result of grouping the scheduling cells according to rule 5, when the first condition is that the ratio of SCS to the size of the slot group is the same, the result of grouping the scheduling cells according to rule 7 is as follows:

[0124] First group: {Cell 1, Cell 2} Second Group: {Cell 3, Cell 4} Second group: {Cell 5} As can be seen by looking at the result of grouping the scheduling cells according to rule 5, when the first condition is that the ratio of the SCS to the sum of the size of the slot group and the minimum interval between the slot groups is the same, the result of grouping the scheduling cells according to rule 7 is as follows:

[0125] First group: {Cell 1, Cell 2} Second Group: {Cell 3, Cell 4} Second group: {Cell 5} In the PDCCH blind detection restriction method provided in the embodiments of the present application, by grouping scheduling cells according to various rules, it is possible to ensure that multiple scheduling cells are appropriately grouped in various cases and the blind detection restriction for each group is determined, and the method has high applicability.

[0126] In one embodiment, the method for limiting PDCCH blind detection provided in the embodiment of the present application includes: The method may further include grouping the multiple scheduling cells when a second condition is satisfied, where the second condition includes one or more of the following conditions 1 to 3:

[0127] In condition 1, the number of all scheduling cells that support slot group based PDCCH blind detection limiting is greater than a first threshold.

[0128] Here, the magnitude of the first threshold may be, for example, 6, 7, 9, etc., and the specific magnitude may be adjusted according to actual circumstances, and the embodiments of the present application are not specifically limited thereto.

[0129] For example, when the UE's PDCCH blind detection capability is strong, the magnitude of the first threshold may be, for example, 10; when the UE's PDCCH blind detection capability is weak, the magnitude of the first threshold may be, for example, 6.

[0130] In condition 2, the number of all scheduling cells supporting slot-based PDCCH blind detection limiting and slot group-based PDCCH blind detection limiting is greater than a second threshold.

[0131] Here, the magnitude of the second threshold may be, for example, 8, 10, etc., and the specific magnitude may be adjusted according to actual circumstances, and the embodiments of the present application are not specifically limited thereto.

[0132] For example, when the UE's PDCCH blind detection capability is strong, the magnitude of the second threshold may be, for example, 12, and when the UE's PDCCH blind detection capability is weak, the magnitude of the first threshold may be, for example, 8.

[0133] Condition 3: the number of all scheduling cells that support PDCCH blind detection constraints based on slot groups and have a matching number of slots in a slot group and / or a matching minimum interval between slot groups is greater than a third threshold.

[0134] Here, the magnitude of the third threshold may be, for example, 6, 8, etc., and the specific magnitude may be adjusted according to actual circumstances, and the embodiments of the present application are not specifically limited thereto.

[0135] For example, when the UE's PDCCH blind detection capability is strong, the magnitude of the third threshold may be, for example, 10; when the UE's PDCCH blind detection capability is weak, the magnitude of the third threshold may be, for example, 6.

[0136] In the PDCCH blind detection restriction method provided in the embodiment of the present application, when the second condition is met, multiple scheduling cells are grouped, thereby ensuring that the grouping is performed effectively and that the PDCCH blind detection is performed smoothly.

[0137] In one embodiment, step S220 may include obtaining one or more of the following parameters, and determining blind detection limit information corresponding to each group based on the obtained parameters, where the parameters may include the following parameters 1 to 6:

[0138] Parameter 1: Number of cells in group A.

[0139] The cell number A may be the number of cells currently in the group.

[0140] Parameter 2: Cell count capacity value C.

[0141] The cell number capacity value C may be the maximum number of scheduling cells that support PDCCH blind detection limiting based on slot group.

[0142] Parameter 3: Budget value B for each cell.

[0143] The budget value B of each cell may be the budget value of the blind detection resource of each cell.

[0144] Here, the blind detection resource may include a PDCCH candidate and / or a CCE.

[0145] Parameter 4: The total number D1 of all scheduling cells supporting PDCCH blind detection limitation based on slot group.

[0146] Parameter 5: The number D2 of all scheduling cells supporting slot-based PDCCH blind detection limiting and slot-group-based PDCCH blind detection limiting.

[0147] Parameter 6: The number D3 of all scheduling cells that support PDCCH blind detection constraints based on slot groups and have a matching number of slots in a slot group and / or a matching minimum spacing between slot groups.

[0148] In one embodiment, the total blind detection limit value for each group is (C*B*A / D) rounded up or down, where D=D1 or D2 or D3.

[0149] In one embodiment, the PDCCH blind detection limit for each group applies to the time domain extent of all slot groups in the scheduling cell of that group.

[0150] In one embodiment, the PDCCH blind detection limitations may include limitations on the number of PDCCH candidates and control channel elements CCEs.

[0151] For example, the PDCCH blind detection resources of all the scheduling cells in each group may be limited to a total blind detection limit value. For example, when the total blind detection limit value is 10, the number of PDCCH Candidates of all the scheduling cells in this group is less than or equal to 10, and / or the number of CCEs of all the scheduling cells in this group is less than or equal to 10×16=160, or 10×8=80.

[0152] FIG. 9 is a schematic flow chart (part 2) of a PDCCH blind detection limiting method provided in an embodiment of the present application. As shown in FIG. 9, the embodiment of the present application is a PDCCH blind detection limiting method applied to a network side device, which includes: and transmitting a PDCCH based on the PDCCH blind detection limit. The PDCCH blind detection limit is A method of grouping a plurality of scheduling cells and determining PDCCH blind detection limitation information corresponding to each group based on a grouping result, A method for limiting PDCCH blind detection is provided, in which the multiple scheduling cells include at least one first cell supporting physical downlink control channel (PDCCH) blind detection limiting based on slot group.

[0153] It should be mentioned that the above method may also be performed by a network side device. Hereinafter, the technical solution of the present application will be described in detail by taking the above method performed by the network side device as an example.

[0154] First, the UE may group multiple scheduling cells according to a grouping rule, and after determining a grouping result, the UE may determine, for each group, PDCCH blind detection limitation information corresponding to the group.

[0155] Among the multiple scheduling cells grouped by the UE, the number of first cells may be one, three, five, etc., or all the scheduling cells may be first cells.

[0156] After determining the PDCCH blind detection limit, the UE may send the PDCCH blind detection limit to a network side device, and after receiving the PDCCH blind detection limit, the network side device may send a PDCCH to the UE, so that the UE performs PDCCH blind detection.

[0157] The PDCCH blind detection restriction method provided in the embodiments of the present application groups scheduling cells and determines the blind detection restriction corresponding to each group according to the grouping result, which can effectively reduce the complexity of realizing PDCCH monitoring in a UE compared with the conventional technology that mechanically defines the PDCCH monitoring capability at the granularity of each slot or span, thereby obviously improving communication efficiency and reducing the power consumption of the UE, and is expected to be widely applied.

[0158] It should be noted that the PDCCH blind detection limiting method provided in the embodiment of the present application may be implemented by a PDCCH blind detection limiting device or a control module for implementing the PDCCH blind detection limiting method in the PDCCH blind detection limiting device. In the embodiment of the present application, the PDCCH blind detection limiting device provided in the embodiment of the present application is taken as an example that the PDCCH blind detection limiting device implements the PDCCH blind detection limiting method.

[0159] FIG. 10 is a schematic diagram (part 1) of a PDCCH blind detection limiting device provided in an embodiment of the present application. As shown in FIG. 10, the embodiment of the present application is a PDCCH blind detection limiting device applied to a terminal, A grouping module 1010 used for grouping a plurality of scheduling cells, the plurality of scheduling cells including at least one first cell supporting PDCCH blind detection limit based on slot group; and a determining module 1020 used for determining PDCCH blind detection limitation information corresponding to each group according to the grouping result.

[0160] The PDCCH blind detection limiting device provided in the embodiments of the present application groups scheduling cells and determines the blind detection limit corresponding to each group according to the grouping result, which can effectively reduce the complexity of realizing PDCCH monitoring in a UE compared with the conventional technology that mechanically defines the PDCCH monitoring capability at the granularity of each slot or span, thereby obviously improving communication efficiency and reducing the power consumption of the UE, and is expected to be widely applied.

[0161] Optionally, the PDCCH blind detection limiting device provided in the embodiment of the present application includes: Determine the number of slots N or the set of slot numbers {Ni} included in the slot group to which the PDCCH blind detection limit is applied; The wireless communication device may further include a slot group determination module (not shown) used for determining a position of a slot group to which a PDCCH blind detection limit is applied based on the determined number of slots N or set of slot numbers {Ni}.

[0162] Optionally, the grouping module 1010 specifically: for implementing a rule for grouping a plurality of scheduling cells, the rule comprising: Grouping all scheduling cells that support slot group based PDCCH blind detection constraints and have the same subcarrier spacing SCS into one group; Supporting PDCCH blind detection restriction based on slot group, grouping all scheduling cells with the same SCS and the same number of slots in the slot group and / or the same minimum interval between the slot groups into one group; Supporting PDCCH blind detection restriction based on slot group, grouping all scheduling cells with the same SCS and matching slot group pattern into one group; Supporting PDCCH blind detection restriction based on slot group, grouping all scheduling cells that satisfy a first condition into one group; Supporting PDCCH blind detection restriction based on slot group, and grouping all scheduling cells that satisfy a first condition and have a slot group edge that coincides into one group; Supporting slot-based PDCCH blind detection restriction and slot group-based PDCCH blind detection restriction, and grouping all scheduling cells that satisfy a first condition into one group; supporting slot-based PDCCH blind detection limitation and slot group-based PDCCH blind detection limitation, and grouping all scheduling cells that meet the first condition and have matching slot group edges into one group.

[0163] Selectively, the first condition is: The ratio of SCS to slot group size is the same, The ratio of the SCS to the sum of the size of the slot group and the minimum interval between the slot groups is the same.

[0164] Optionally, the grouping module 1010 groups the plurality of scheduling cells if a second condition is met, the second condition being: The number of all scheduling cells supporting slot group-based PDCCH blind detection limiting is greater than a first threshold; The number of all scheduling cells supporting slot-based PDCCH blind detection limiting and slot group-based PDCCH blind detection limiting is greater than a second threshold; supporting PDCCH blind detection limit based on slot group, and the number of all scheduling cells with matching numbers of slots in the slot group and / or matching minimum spacing between slot groups is greater than a third threshold.

[0165] Optionally, the determination module 1020 specifically determines whether The number of cells in the group, A, The cell capacity value C, The budget value B for each cell, A total number D1 of all scheduling cells supporting PDCCH blind detection limitation based on slot group; A number D2 of all scheduling cells supporting slot-based PDCCH blind detection limitation and slot group-based PDCCH blind detection limitation; and the number D3 of all scheduling cells that support PDCCH blind detection limitation based on slot group and have a matching number of slots in the slot group and / or a matching minimum interval between the slot groups, and may be used to obtain one or more parameters, and determine blind detection limitation information corresponding to each group based on the obtained parameters.

[0166] Optionally, the total blind detection limit value for each group is rounded up or down to (C*B*A / D), where D=D1 or D2 or D3.

[0167] Optionally, the PDCCH blind detection limit for each group applies to the time domain extent of all slot groups in the scheduling cell of that group.

[0168] Optionally, the PDCCH blind detection limitations may include limitations on the number of PDCCH candidates and CCEs.

[0169] The method of obtaining the number of slots N or the set of slots {Ni} can be selected as follows: Obtaining by network placement; The downlink control information (DCI) time domain scheduling parameter is obtained according to a number of schedulable physical downlink shared channels (PDSCH) or a number of slots; According to a capability parameter reported by the terminal UE, the capability parameter includes a number of slots N or a set of slot numbers {Ni}, or the DCI time domain scheduling parameter includes a number of PDSCHs or a number of slots that can be scheduled; It may be one of: obtaining it by a number of slots N or a set of slot numbers {Ni} predefined in the protocol.

[0170] Optionally, the method for determining the location of the slot group can be: determining by any consecutive N slots; In a radio frame or radio subframe or slot bundling, a slot group is formed for every N slots starting from the first slot, and the last group is the last slot of the radio frame or radio subframe or slot bundling, and the slot group pattern is repeated in each radio frame or radio subframe or slot bundling; A slot configured by the network or reported by the UE is set as a start slot or a reference slot, and a position of a slot group is determined according to the start slot or the reference slot and a number N of slots; and determining a pattern of slot groups according to monitoring timings arranged in the search space SS.

[0171] Selectively determining a pattern of slot groups according to monitoring timings arranged in a search space SS includes: and wherein the pattern of slot groups repeats in each radio frame or radio subframe or slot bundling; The starting point of the first slot group is the first slot with monitoring timing in a radio frame or radio subframe or slot bundling, and N slots from the starting point of the first slot group are considered to be the first slot group, the starting point of the next slot group is the first slot with monitoring timing that does not exist in any previous slot group, and N slots from the starting point of the next slot group are considered to be one slot group, and so on, until the last slot group ends at the end of the radio frame or radio subframe or slot bundling.

[0172] Selectively determining a pattern of slot groups according to monitoring timings arranged in a search space SS includes: The pattern of slot groups may be different in each radio frame or radio subframe or slot bundling. For each radio frame or radio subframe or slot bundling, the start of the first slot group is the first slot with monitoring timing in the radio frame or radio subframe or slot bundling, N slots from the start of the first slot group are considered to be the first slot group, the start of the next slot group is the first slot with monitoring timing that does not exist in any previous slot group, N slots from the start of the next slot group are considered to be one slot group, and so on, until the last slot group ends at the end of the radio frame or radio subframe or slot bundling.

[0173] Selectively determining a pattern of slot groups according to monitoring timings arranged in a search space SS includes: The method may include determining a pattern of slot groups from a starting slot or a reference slot configured by the network or reported by the UE, or determining a pattern of slot groups from a starting slot or a source slot separated by a predetermined number of slots from the reference slot; The starting point of the first slot group is the start slot or the first slot having a monitoring timing after the starting point slot, N slots from the starting point of the first slot group are considered to be the first slot group, the starting point of the next slot group is the first slot having a monitoring timing that does not exist in any previous slot group, N slots from the starting point of the next slot group are considered to be one slot group, and the slot group pattern is determined in this order.

[0174] The PDCCH blind detection limiting device in the embodiment of the present application may be a device, or may be a component, integrated circuit or chip in a terminal. The device may be a portable terminal or a non-portable terminal. For example, the portable terminal may include, but is not limited to, the types of terminal 11 listed above, and the non-portable terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an automated teller machine or a kiosk terminal, etc., and is not specifically limited in the embodiment of the present application.

[0175] The PDCCH blind detection limiting device in the embodiment of the present application may be a device having an operating system, which may be an Android operating system, an ios operating system, or other possible operating systems, and is not specifically limited in the embodiment of the present application.

[0176] The PDCCH blind detection limiting device provided in the embodiments of the present application can realize each step implemented in the method embodiments of Figures 2 to 8, and can achieve similar technical effects, so detailed description will be omitted here to avoid repetition.

[0177] FIG. 11 is a schematic diagram (part 2) of a PDCCH blind detection limiting device provided in an embodiment of the present application. As shown in FIG. 11, the embodiment of the present application is a PDCCH blind detection limiting device applied to a network side device, and a channel transmission module 1110 used for transmitting the PDCCH based on the PDCCH blind detection limit; The PDCCH blind detection limit is A PDCCH blind detection limitation device is provided, which determines PDCCH blind detection limitation information corresponding to each group by grouping a plurality of scheduling cells and determining the PDCCH blind detection limitation information corresponding to each group based on a grouping result, wherein the plurality of scheduling cells includes at least one first cell that supports PDCCH blind detection limitation based on a slot group.

[0178] The PDCCH blind detection limiting device provided in the embodiments of the present application groups scheduling cells and determines the blind detection limit corresponding to each group according to the grouping result, which can effectively reduce the complexity of realizing PDCCH monitoring in a UE compared with the conventional technology that mechanically defines the PDCCH monitoring capability at the granularity of each slot or span, thereby obviously improving communication efficiency and reducing the power consumption of the UE, and is expected to be widely applied.

[0179] The PDCCH blind detection limiting device in the embodiment of the present application may be a device, or may be a component, integrated circuit or chip in a terminal. The device may be a portable terminal or a non-portable terminal. For example, the portable terminal may include, but is not limited to, the types of terminal 11 listed above, and the non-portable terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an automated teller machine or a kiosk terminal, etc., and is not specifically limited in the embodiment of the present application.

[0180] The PDCCH blind detection limiting device in the embodiment of the present application may be a device having an operating system, which may be an Android operating system, an ios operating system, or other possible operating systems, and is not specifically limited in the embodiment of the present application.

[0181] The PDCCH blind detection limiting device provided in the embodiments of the present application can realize each step implemented in the method embodiments of Figures 3a to 8, and can achieve similar technical effects, so detailed description will be omitted here to avoid repetition.

[0182] Optionally, as shown in Fig. 12, the embodiment of the present application further provides a communication device 1200, including a processor 1201, a memory 1202, and a program or command stored in the memory 1202 and operable by the processor 1201, for example, when the communication device 1200 is a terminal, the program or command is executed by the processor 1201 to realize each step of the embodiment of the PDCCH blind detection limiting method, and achieve the same technical effect. When the communication device 1200 is a network side device, the program or command is executed by the processor 1201 to realize each step of the embodiment of the PDCCH blind detection limiting method, and achieve the same technical effect, and detailed description thereof will be omitted here to avoid repetition.

[0183] FIG. 13 is a schematic diagram of the hardware configuration of a terminal for implementing an embodiment of the present application.

[0184] The terminal 1300 comprises elements such as, but not limited to, a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309 and a processor 1310.

[0185] Those skilled in the art can understand that the terminal 1300 may further include a power source (e.g., a battery) for powering each component, and the power source may be logically connected to the processor 1310 through a power management system, thus realizing functions such as charge / discharge management and power consumption management through the power management system. The structure of the terminal shown in FIG. 13 is not intended to limit the terminal, and the terminal may include more or fewer components than those shown, or a combination of some components, or a different component arrangement, and detailed descriptions thereof will be omitted here.

[0186] It should be understood that in the embodiment of the present application, the input unit 1304 may include a graphics processing unit (GPU) 13041 for processing image data of static or video captured by an image capture device (e.g., a camera) in a video capture mode or an image capture mode, and a microphone 13042. The display unit 1306 may include a display panel 13061, which may be arranged in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1307 includes a touch panel 13071 and other input devices 13072. The touch panel 13071 is also called a touch screen. The touch panel 13071 may include two parts: a touch detection device and a touch controller. The other input devices 13072 may include, but are not limited to, a physical keyboard, a function button (e.g., a volume control button, a switch button, etc.), a trackball, a mouse, and a control lever, and detailed description thereof is omitted here.

[0187] In the embodiment of the present application, the high frequency unit 1301 receives downlink data from the network side device, processes the data in the processor 1310, and transmits uplink data to the network side device. Typically, the high frequency unit 1301 includes, but is not limited to, an antenna, at least one amplifier, a receiver-transmitter, a coupler, a low-noise amplifier, a duplexer, etc.

[0188] The memory 1309 can be used to store software programs or commands and various data. The memory 1309 may mainly include an area for storing programs or commands and a data storage area, which can store an operating system, applications or commands required for at least one function (e.g., audio playback function, image playback function, etc.). The memory 1309 may also include a high-speed random access memory or a non-volatile memory, among which the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage device may be included.

[0189] The processor 1310 may include one or more processing units, and may selectively integrate an application processor that mainly processes an operating system, a user interface, and applications or commands, etc., and a modem processor that mainly processes wireless communications, such as a baseband processor, in the processor 1310. It is understood that the modem processor may not be integrated into the processor 1310.

[0190] Wherein, the processor 1310 performs the steps of: grouping a plurality of scheduling cells, where the plurality of scheduling cells includes at least one first cell supporting PDCCH blind detection limit based on slot group; and determining PDCCH blind detection limitation information corresponding to each group based on the grouping result.

[0191] The terminal provided in the embodiments of the present application can effectively reduce the complexity of implementing PDCCH monitoring in a UE by grouping scheduling cells and determining the blind detection limit corresponding to each group according to the grouping result, compared with the conventional technology that mechanically defines the PDCCH monitoring capability at a granularity of per slot or per span, thus obviously improving communication efficiency and reducing the power consumption of the UE, and is expected to be widely applied.

[0192] Optionally, the processor 1310 may further Determine the number of slots N or the set of slot numbers {Ni} included in the slot group to which the PDCCH blind detection limit is applied; This is used to determine the slot group to which the PDCCH blind detection limit is applied in the first cell based on the method of determining the position of the slot group to which the PDCCH blind detection limit is applied based on the determined number of slots N or set of slot numbers {Ni}.

[0193] Optionally, the processor 1310 is further adapted to group the plurality of scheduling cells if a second condition is satisfied, the second condition being: The number of all scheduling cells supporting slot group-based PDCCH blind detection limiting is greater than a first threshold; The number of all scheduling cells supporting slot-based PDCCH blind detection limiting and slot group-based PDCCH blind detection limiting is greater than a second threshold; supporting PDCCH blind detection limit based on slot group, and the number of all scheduling cells with matching numbers of slots in the slot group and / or matching minimum spacing between slot groups is greater than a third threshold.

[0194] Optionally, the processor 1310 may further The number of cells in the group, A, The cell capacity value C, The budget value B for each cell, A total number D1 of all scheduling cells supporting PDCCH blind detection limitation based on slot group; A number D2 of all scheduling cells supporting slot-based PDCCH blind detection limitation and slot group-based PDCCH blind detection limitation; and the number D3 of all scheduling cells that support PDCCH blind detection limitation based on slot group and have a matching number of slots in the slot group and / or a matching minimum interval between the slot groups; and obtain one or more parameters including the number D3 of all scheduling cells that support PDCCH blind detection limitation based on slot group and have a matching number of slots in the slot group and / or a matching minimum interval between the slot groups, and determine blind detection limitation information corresponding to each group based on the obtained parameters.

[0195] Optionally, the processor 1310 is further adapted to determine a pattern of slot groups according to monitoring timings arranged in the search space SS, which includes: the pattern of slot groups repeating in each radio frame or radio subframe or slot bundling; The starting point of the first slot group is the first slot with monitoring timing in a radio frame or radio subframe or slot bundling, and N slots from the starting point of the first slot group are considered to be the first slot group, the starting point of the next slot group is the first slot with monitoring timing that does not exist in any previous slot group, and N slots from the starting point of the next slot group are considered to be one slot group, and so on, until the last slot group ends at the end of the radio frame or radio subframe or slot bundling.

[0196] Optionally, the processor 1310 is further adapted to determine a pattern of slot groups according to monitoring timings arranged in the search space SS, which includes: The pattern of the slot groups is different in each radio frame or radio subframe or slot bundling; For each radio frame or radio subframe or slot bundling, the start of the first slot group is the first slot with monitoring timing in the radio frame or radio subframe or slot bundling, N slots from the start of the first slot group are considered to be the first slot group, the start of the next slot group is the first slot with monitoring timing that does not exist in any previous slot group, N slots from the start of the next slot group are considered to be one slot group, and so on, until the last slot group ends at the end of the radio frame or radio subframe or slot bundling.

[0197] Optionally, the processor 1310 is further adapted to determine a pattern of slot groups according to monitoring timings arranged in the search space SS, which includes: determining a pattern of slot groups from a starting slot or a reference slot configured by the network or reported by the UE; and determining a pattern of slot groups from the starting slot or a starting slot separated by a predetermined number of slots from the reference slot; The starting point of the first slot group is the start slot or the first slot having a monitoring timing after the starting point slot, N slots from the starting point of the first slot group are considered to be the first slot group, the starting point of the next slot group is the first slot having a monitoring timing that does not exist in any previous slot group, N slots from the starting point of the next slot group are considered to be one slot group, and the slot group pattern is determined in this order.

[0198] The terminal provided in the embodiments of the present application can effectively reduce the complexity of implementing PDCCH blind detection in the UE, thus obviously improving communication efficiency and reducing the power consumption of the UE.

[0199] An embodiment of the present application further provides a network side device. As shown in Fig. 14, the network device 1400 includes an antenna 1401, a radio frequency device 1402, and a baseband device 1403. The antenna 1401 is connected to the radio frequency device 1402. In the uplink direction, the radio frequency device 1402 receives information through the antenna 1401, and transmits the received information to the baseband device 1403 for processing. In the downlink direction, the baseband device 83 processes the information to be transmitted and transmits it to the radio frequency device 1402, and the radio frequency device 1402 processes the received information before transmitting it through the antenna 1401.

[0200] The above-mentioned frequency band processing device may be in a baseband device 1403 , and the method performed by the network side device in the above-mentioned embodiment can be realized in the baseband device 1403 , which includes a processor 1404 and a memory 1405 .

[0201] The baseband device 1403 may, for example, include at least one baseband board having multiple chips installed thereon, and as shown in FIG. 14, one of the chips may, for example, be a processor 1404 connected to a memory 1405 to call a program in the memory 1405 to perform the operations of the network device as shown in the above method embodiments.

[0202] The baseband device 1403 may further include a network interface 1406 for communicating with the radio frequency device 1402, the interface being, for example, a common public radio interface (CPRI).

[0203] Specifically, the network side device of the embodiment of the present application further includes a command or program stored in memory 1405 and operable by processor 1404, and processor 1404 calls the command or program in memory 1405 to execute the method executed by each module shown in FIG. 11, and achieves similar technical effects. In order to avoid repetition, detailed description will be omitted here.

[0204] An embodiment of the present application further provides a readable storage medium, which may be non-volatile or volatile, and stores a program or command in the readable storage medium, which, when executed by a processor, realizes each step of the embodiment of the PDCCH blind detection limiting method and achieves similar technical effects. In order to avoid repetition, detailed description will be omitted here.

[0205] Here, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium such as a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0206] An embodiment of the present application further provides a chip comprising a processor and a communication interface, the communication interface and the processor are coupled to each other, and the processor executes a program or command of a network side device to realize each step of the embodiment of the above-mentioned PDCCH blind detection limiting method, and can achieve similar technical effects. In order to avoid repetition, a detailed description is omitted here.

[0207] It should be understood that the chip described in the embodiments of the present application may be referred to as a system chip, a chip system, a system on a chip, or the like.

[0208] An embodiment of the present application further provides a computer program product that can be stored in a non-transitory readable storage medium and executed by at least one processor to realize each step of the embodiment of the above-mentioned PDCCH blind detection limiting method and achieve similar technical effects, and detailed description thereof will be omitted here to avoid repetition.

[0209] It should be noted that in this specification, the terms "comprise", "consist of" or any other variants are intended to include a non-exclusive inclusion, whereby a process, method, article or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly stated or inherent to such process, method, article or apparatus. Unless otherwise specified, an element limited by the phrase "comprises a" does not exclude the presence of other identical elements in the process, method, article or apparatus that includes the element. It should also be noted that the scope of the method and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions substantially simultaneously or in the reverse order depending on such functions, for example, the described method may be performed in a different order than described, and various steps may be added, omitted or combined. Also, features described with reference to any example may be combined in other examples.

[0210] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform, and of course, they can be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical solution of the present application can be substantially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions that cause a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present application.

[0211] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of the present application, many forms that a person skilled in the art can make without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

Claims

1. A method for limiting PDCCH blind detection applied to a terminal, comprising: A step of grouping a plurality of scheduling cells, the plurality of scheduling cells including at least one first cell supporting a physical downlink control channel (PDCCH) blind detection limitation based on a slot group; determining PDCCH blind detection limitation information corresponding to each group based on a grouping result according to a rule for grouping a plurality of scheduling cells; Including, The rule for grouping the plurality of scheduling cells is: Supporting PDCCH blind detection restriction based on slot group, including grouping all scheduling cells with the same SCS and the same number of slots in the slot group into one group; A method for limiting PDCCH blind detection.

2. Determine a number N of slots or a set {Ni} of slot numbers included in a slot group to which the PDCCH blind detection limit is applied; The method further includes determining a slot group to which the PDCCH blind detection restriction is applied in the first cell based on a method of determining a position of the slot group to which the PDCCH blind detection restriction is applied based on the determined number of slots N or a set of slot numbers {Ni}. The method for limiting PDCCH blind detection as claimed in claim 1.

3. The step of determining blind detection limit information corresponding to each group based on the grouping result includes: A number of cells in the group; and The cell number capacity value C, The budget value B of each cell, A total number D1 of all scheduling cells supporting PDCCH blind detection limitation based on slot group; D2, the number of all scheduling cells that support slot-based PDCCH blind detection limitation and slot group-based PDCCH blind detection limitation; and a number D3 of all scheduling cells that support PDCCH blind detection limitation based on slot group and have a matching number of slots in the slot group and / or a matching minimum interval between the slot groups; and obtaining one or more parameters including the number D3 of all scheduling cells that support PDCCH blind detection limitation based on slot group, and determining blind detection limitation information corresponding to each group based on the obtained parameters. The method for limiting PDCCH blind detection according to claim 1 or 2.

4. The total blind detection limit for each group is (C*B*A / D) rounded up or down, where D=D1 or D2 or D3. The method for limiting PDCCH blind detection according to claim 3.

5. The PDCCH blind detection restriction includes a restriction on the number of blind detection candidate physical downlink control channels (PDCCH candidates) and the number of control channel elements (CCEs); The method for limiting PDCCH blind detection as claimed in claim 1.

6. The method of determining the position of the slot group is as follows: determining over any N consecutive slots; In a radio frame or radio subframe or slot bundling, a slot group is formed from every N slots starting from the first slot, and the last group has the last slot of the radio frame or radio subframe or slot bundling as the end slot, and the slot group pattern is repeated in each radio frame or radio subframe or slot bundling; A slot configured by a network or reported by a UE is set as a start slot or a reference slot, and a position of the slot group is determined according to the start slot or the reference slot and the number of slots N; determining a pattern of the slot group according to a monitoring timing arranged in a search space SS; The method for limiting PDCCH blind detection according to claim 2.

7. Determining a pattern of the slot group according to the monitoring timing arranged in the search space SS The pattern of the slot group is repeated in each radio frame or radio subframe or slot bundling, The start point of the first slot group is the first slot having a monitoring timing in a radio frame or radio subframe or slot bundling, N slots from the start point of the first slot group are the first slot group, the start point of the next slot group is the first slot having a monitoring timing that does not exist in any previous slot group, N slots from the start point of the next slot group are one slot group, and so on, until the last slot group ends at the end point of the radio frame or radio subframe or slot bundling, or Determining a pattern of the slot group according to the monitoring timing arranged in the search space SS The pattern of the slot group is different in each radio frame, radio subframe, or slot bundling; For each radio frame or radio subframe or slot bundling, the start point of the first slot group is the first slot with a monitoring timing in the radio frame or radio subframe or slot bundling, N slots from the start point of the first slot group are the first slot group, the start point of the next slot group is the first slot with a monitoring timing that does not exist in any previous slot group, N slots from the start point of the next slot group are one slot group, and so on, until the last slot group ends at the end of the radio frame or radio subframe or slot bundling, or Determining a pattern of a slot group according to the monitoring timing arranged in the search space SS The method includes determining a pattern of the slot group from a start slot or a reference slot, the start slot being a slot configured by a network or reported by a UE, or determining a pattern of the slot group from a starting slot that is separated from the reference slot by a predetermined number of slots; The starting point of the first slot group is the first slot having a monitoring timing after the start slot or the starting point slot, N slots from the starting point of the first slot group are set as the first slot group, the starting point of the next slot group is the first slot having a monitoring timing that does not exist in any previous slot group, N slots from the starting point of the next slot group are set as one slot group, and the pattern of the slot groups is determined in this order. The method for limiting PDCCH blind detection according to claim 6.

8. A method for limiting PDCCH blind detection applied to a network side device, comprising: transmitting a physical downlink control channel (PDCCH) based on a PDCCH blind detection limitation; The PDCCH blind detection restriction is The method includes grouping a plurality of scheduling cells and determining PDCCH blind detection limitation information corresponding to each group based on a grouping result, wherein the plurality of scheduling cells includes at least one first cell supporting PDCCH blind detection limitation based on a slot group; The rule for grouping multiple scheduling cells is: Supporting PDCCH blind detection restriction based on slot group, including grouping all scheduling cells with the same SCS and the same number of slots in the slot group into one group; A method for limiting PDCCH blind detection.

9. A PDCCH blind detection limiting device applied to a terminal, comprising: A grouping module used for grouping a plurality of scheduling cells, the plurality of scheduling cells including at least one first cell supporting a physical downlink control channel (PDCCH) blind detection limitation based on a slot group; A determination module is used for determining PDCCH blind detection limitation information corresponding to each group based on a grouping result according to a rule for grouping a plurality of scheduling cells; Equipped with The rule for grouping the plurality of scheduling cells is: Supporting PDCCH blind detection restriction based on slot group, including grouping all scheduling cells with the same SCS and the same number of slots in the slot group into one group; A PDCCH blind detection limiting device.

10. Determine a number N of slots or a set {Ni} of slot numbers included in a slot group to which the PDCCH blind detection limit is applied; The method further comprises: determining a slot group position for applying the PDCCH blind detection limit based on the determined number of slots N or the set of slot numbers {Ni}; The PDCCH blind detection limiting device according to claim 9.

11. Specifically, the determination module: A number of cells in the group; and The cell number capacity value C, The budget value B of each cell, A total number D1 of all scheduling cells supporting PDCCH blind detection limitation based on slot group; D2, the number of all scheduling cells that support slot-based PDCCH blind detection limitation and slot group-based PDCCH blind detection limitation; and a number D3 of all scheduling cells that support PDCCH blind detection limitation based on slot groups and have the same number of slots in the slot groups and / or the same minimum interval between the slot groups; and obtain one or more parameters including the number D3 of all scheduling cells that support PDCCH blind detection limitation based on slot groups and have the same number of slots in the slot groups and / or the same minimum interval between the slot groups, and use the obtained parameters to determine blind detection limitation information corresponding to each group. The device for limiting PDCCH blind detection according to claim 9 or 10.

12. The PDCCH blind detection limiting device according to claim 11, wherein the total blind detection limiting value of each group is rounded up or down with respect to (C*B*A / D), where D=D1, D2 or D3.

13. The PDCCH blind detection limiting apparatus of claim 9 , wherein the PDCCH blind detection limiting includes a limit on a number of blind detection candidate physical downlink control channels (PDCCH candidates) and a limit on a number of control channel elements (CCEs).

14. A PDCCH blind detection limiting device applied to a network side device, A channel transmission module is used for transmitting a physical downlink control channel (PDCCH) based on a physical downlink control channel (PDCCH) blind detection limitation, The PDCCH blind detection restriction is The method includes grouping a plurality of scheduling cells and determining PDCCH blind detection limitation information corresponding to each group based on a grouping result, wherein the plurality of scheduling cells includes at least one first cell supporting PDCCH blind detection limitation based on a slot group; The rule for grouping multiple scheduling cells is: Supporting PDCCH blind detection restriction based on slot group, including grouping all scheduling cells with the same SCS and the same number of slots in the slot group into one group; A PDCCH blind detection limiting device.

15. A readable storage medium having a program or command stored thereon, the program or command being executed by a processor to implement the method for limiting PDCCH blind detection according to any one of claims 1 to 7.

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