Downlink control information detection, transmission method and apparatus

Abstract

The present disclosure relates to a downlink control information detection, transmission method and device, wherein the downlink control information detection method comprises: it is not expected that in the same time domain unit, the number of sizes of downlink control information (DCI) scrambled by a first radio network temporary identifier (RNTI) that needs to be detected is greater than a first number, and the number of sizes of DCI scrambled by a second RNTI that needs to be detected is greater than a second number; wherein the DCI at least comprises DCI used for scheduling multiple cells. According to the present disclosure, the number of sizes of DCI scrambled by the first RNTI and the number of sizes of DCI scrambled by the second RNTI in the same time domain unit can be avoided to be too much, so as to ensure that the number of blind detections distributed to DCI of each size will not be reduced, to ensure good resolution effect for DCI, and to avoid affecting the flexibility and performance of physical downlink control channel transmission.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and in particular, to a downlink control information detection method, a downlink control information sending method, a downlink control information detection apparatus, a downlink control information sending apparatus, a communication apparatus, and a computer readable storage medium. BACKGROUND

[0002] In the related art, one downlink control information (DCI) is used to schedule data of one cell, for example, to schedule a physical uplink shared channel (PUSCH) or a physical downlink shared channel (PDSCH) of one cell.

[0003] With the fragmentation of frequency resources, the demand for scheduling data of multiple cells simultaneously gradually increases. In order to reduce the control message overhead, it is proposed to schedule data of multiple cells by a single DCI, for example, a DCI used to schedule multiple cells (data), which can be referred to as MC-DCI, where MC represents multi-cell or multi-carrier.

[0004] As a newly introduced DCI, the MC-DCI can be different from the format of the legacy DCI, and the size of the MC-DCI can also be different from the size of the legacy DCI, which will cause the total number of DCI sizes to increase, affecting the flexibility and performance of physical downlink control channel (PDCCH) transmission. SUMMARY

[0005] Therefore, embodiments of the present disclosure provide a downlink control information detection method, a downlink control information sending method, a downlink control information detection apparatus, a downlink control information sending apparatus, a communication apparatus, and a computer readable storage medium to solve the technical problems in the related art.

[0006] According to a first aspect of embodiments of the present disclosure, a downlink control information detection method is provided, which is performed by a terminal, and the method comprises: not expecting that, in a same time domain unit, a number of sizes of downlink control information (DCI) scrambled by a first radio network temporary identifier (RNTI) and needed to be detected is greater than a first number, and a number of sizes of DCI scrambled by a second RNTI and needed to be detected is greater than a second number; wherein the DCI at least includes DCI used to schedule multiple cells.

[0007] According to a second aspect of the embodiments of the present disclosure, a method for detecting downlink control information is provided, which is performed by a terminal and includes: determining that a sum of a number of sizes of DCI for scheduling multiple cells and a number of sizes of DCI scrambled by a first RNTI that need to be detected in a same time domain unit is greater than a first number; wherein the DCI at least includes DCI for scheduling multiple cells; determining a first DCI in the DCI that needs to be detected; and not detecting DCI in a search space corresponding to the first DCI.

[0008] According to a third aspect of the embodiments of the present disclosure, a method for sending downlink control information is provided, which is performed by a network device and includes: in a same time domain unit, sending, to a terminal, a number of sizes of DCI scrambled by a first radio network temporary identifier (RNTI) that is less than or equal to a first number, and a number of sizes of DCI scrambled by a second RNTI that is less than or equal to a second number; wherein the DCI at least includes DCI for scheduling multiple cells.

[0009] According to a fourth aspect of the embodiments of the present disclosure, a method for sending downlink control information is provided, which is performed by a network device and includes: determining that a sum of a number of sizes of DCI for scheduling multiple cells and a number of sizes of DCI scrambled by a first RNTI that need to be sent to a terminal in a same time domain unit is greater than a first number; wherein the DCI at least includes DCI for scheduling multiple cells; determining a first DCI in the DCI that needs to be detected; and not sending DCI in a search space corresponding to the first DCI.

[0010] According to a fifth aspect of the embodiments of the present disclosure, a device for detecting downlink control information is provided, which includes: a processing module configured to determine that a number of sizes of DCI scrambled by a first radio network temporary identifier (RNTI) that need to be detected and a number of sizes of DCI scrambled by a second RNTI that need to be detected in a same time domain unit are greater than a first number and a second number respectively; wherein the DCI at least includes DCI for scheduling multiple cells.

[0011] According to a sixth aspect of the embodiments of the present disclosure, a device for detecting downlink control information is provided, which includes: a processing module configured to determine that a sum of a number of sizes of DCI for scheduling multiple cells and a number of sizes of DCI scrambled by a first RNTI that need to be detected in a same time domain unit is greater than a first number; wherein the DCI at least includes DCI for scheduling multiple cells; determine a first DCI in the DCI that needs to be detected; and a receiving module configured to not detect DCI in a search space corresponding to the first DCI.

[0012] According to a seventh aspect of the embodiments of the present disclosure, a downlink control information sending device is provided. The device comprises a processing module configured to send, in a same time domain unit, a number of sizes of downlink control information (DCI) scrambled by a first radio network temporary identifier (RNTI) to a terminal, the number being less than or equal to a first number, and a number of sizes of DCI scrambled by a second RNTI, the number being less than or equal to a second number; wherein the DCI comprises at least DCI for scheduling multiple cells.

[0013] According to an eighth aspect of the embodiments of the present disclosure, a downlink control information sending device is provided. The device comprises a processing module configured to determine that a sum of a number of sizes of DCI for scheduling multiple cells and a number of sizes of DCI scrambled by a first RNTI that need to be sent to a terminal in a same time domain unit is greater than a first number; wherein the DCI comprises at least DCI for scheduling multiple cells; determine a first DCI from the DCI that need to be detected; and a sending module configured to not send DCI in a search space corresponding to the first DCI.

[0014] According to a ninth aspect of the embodiments of the present disclosure, a communication device is provided. The device comprises a processor; and a memory for storing a computer program; wherein when the computer program is executed by the processor, the above-mentioned downlink control information detecting method is implemented.

[0015] According to a tenth aspect of the embodiments of the present disclosure, a communication device is provided. The device comprises a processor; and a memory for storing a computer program; wherein when the computer program is executed by the processor, the above-mentioned downlink control information sending method is implemented.

[0016] According to an eleventh aspect of the embodiments of the present disclosure, a computer readable storage medium is provided for storing a computer program, when the computer program is executed by a processor, the steps of the above-mentioned downlink control information detecting method are implemented.

[0017] According to a twelfth aspect of the embodiments of the present disclosure, a computer readable storage medium is provided for storing a computer program, when the computer program is executed by a processor, the steps of the above-mentioned downlink control information sending method are implemented.

[0018] According to the embodiments of the present disclosure, the number of sizes of DCI scrambled by the first RNTI and the number of sizes of DCI scrambled by the second RNTI in the same time domain unit can be avoided to be too large, so that the number of blind detections distributed on each size of DCI is ensured not to be reduced, the good resolution effect of the DCI is ensured, and the flexibility and performance of the physical downlink control channel transmission are avoided to be affected. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 is a schematic flowchart of a method according to an embodiment of the present disclosure.

[0021] Figure 2A is a schematic flowchart of another downlink control information detection method according to an embodiment of the present disclosure.

[0022] Figure 2B is a schematic diagram of an application scenario of a downlink control information detection method according to an embodiment of the present disclosure.

[0023] Figure 3A is a schematic flowchart of yet another downlink control information detection method according to an embodiment of the present disclosure.

[0024] Figure 3B is a schematic diagram of an application scenario of a downlink control information detection method according to an embodiment of the present disclosure.

[0025] Figure 4 is a schematic flowchart of a downlink control information detection method according to an embodiment of the present disclosure.

[0026] Figure 5 is a schematic flowchart of another downlink control information detection method according to an embodiment of the present disclosure.

[0027] Figure 6 is a schematic diagram of an application scenario of a downlink control information detection method according to an embodiment of the present disclosure.

[0028] Figure 7 is a schematic flowchart of yet another downlink control information detection method according to an embodiment of the present disclosure.

[0029] Figure 8 is a schematic flowchart of a downlink control information transmission method according to an embodiment of the present disclosure.

[0030] Figure 9 is a schematic flowchart of a downlink control information transmission method according to an embodiment of the present disclosure.

[0031] Figure 10 is a schematic block diagram of a downlink control information detection device according to an embodiment of the present disclosure.

[0032] Figure 11 is a schematic block diagram of a downlink control information detection apparatus according to an embodiment of the present disclosure.

[0033] Figure 12 is a schematic block diagram of a downlink control information transmission apparatus according to an embodiment of the present disclosure.

[0034] Figure 13 is a schematic block diagram of a downlink control information transmission apparatus according to an embodiment of the present disclosure.

[0035] Figure 14 is a schematic block diagram of an apparatus for downlink control information transmission according to an embodiment of the present disclosure.

[0036] Figure 15 is a schematic block diagram of an apparatus for downlink control information detection according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present disclosure.

[0038] The terms used in the embodiments of the present disclosure are merely for the purpose of describing particular embodiments and are not intended to limit the embodiments of the present disclosure. The singular forms "a", "an" and "the" used in the embodiments of the present disclosure and the appended claims are intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0039] It should be understood that although the terms first, second, third, etc. can be used in the embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another type of information. For example, without departing from the scope of the embodiments of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon" or "in response to determining".

[0040] For the purpose of brevity and ease of understanding, the terms "greater than" or "less than", "higher than" or "lower than" are used herein to characterize the size relationship. However, it can be understood by those skilled in the art that the term "greater than" also covers the meaning of "greater than or equal to", and the term "less than" also covers the meaning of "less than or equal to"; the term "higher than" covers the meaning of "higher than or equal to", and the term "lower than" covers the meaning of "lower than or equal to".

[0041] In one embodiment, after introducing the DCI for scheduling multiple cells (e.g., scheduling data of 3, 4, 8 serving cells), the DCI for scheduling multiple cells can be referred to as MC-DCI, where MC represents multi-cell or multi-carrier. Since the MC-DCI is newly introduced as a DCI, the size (full name: payload size, i.e., the number of bits) of the MC-DCI can be different from the size of the legacy DCI (the format can also be different), which will result in an increase in the total number of DCI sizes.

[0042] Since the terminal receives the DCI by blind decoding (BD) of the PDCCH, and the maximum number of blind decodings in the same time domain unit is fixed, these blind decoding times can be distributed to each size of DCI in the same time domain unit. At present, in a serving cell, the terminal supports the size of the DCI to meet the "3+1" requirement, that is, the number of sizes of DCI scrambled by the cell radio network temporary identity (C-RNTI) is less than or equal to 3, and the number of sizes of DCI scrambled by other RNTIs is less than or equal to 1.

[0043] And since the MC-DCI is introduced, the size of the MC-DCI can be different from the size of the legacy DCI, which will result in an increase in the number of sizes of DCI, and in turn result in a decrease in the number of blind decodings (average number) distributed to each size of DCI. The lower the number of blind decodings, the worse the effect of parsing the DCI, thereby resulting in a problem of affecting the flexibility and performance of the physical downlink control channel transmission.

[0044] The legacy DCI includes, but is not limited to, DCI for scheduling a single cell, such as DCI format 0_0, DCI format 1_0, DCI format 0_1, DCI format 1_1, DCI format 0_2, and DCI format 1_2. The format of the MC-DCI can be different from the format of the legacy DCI, for example, the MC-DCI includes DCI format 0_3 and DCI format 1_3.

[0045] The following embodiments are mainly exemplarily described for two downlink control information detection methods, and each downlink control information detection method can overcome the above technical problems.

[0046] Figure 1 FIG. 1 is a schematic flowchart of a downlink control information detection method according to an embodiment of the present disclosure. The downlink control information detection method shown in the embodiment can be performed by a terminal, which includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, and the like. The terminal can communicate with a network device, which includes but is not limited to a network device in a 4G, 5G, 6G, or the like communication system, such as a base station, a core network, and the like.

[0047] As shown in FIG. 1, the downlink control information detection method can include the following steps: Figure 1

[0048] In step S101, it is not expected that, in the same time domain unit, the number of sizes of downlink control information DCI scrambled by a first radio network temporary identifier RNTI that needs to be detected is greater than a first number, and the number of sizes of DCI scrambled by a second RNTI that needs to be detected is greater than a second number.

[0049] The DCI (DCI scrambled by the first RNTI or DCI scrambled by the second RNTI) at least includes DCI for scheduling multiple cells.

[0050] In one embodiment, in the case that the network device includes MC-DCI in the DCI sent to the terminal, the DCI scrambled by the first RNTI and the DCI scrambled by the second RNTI can be reasonably configured, so that in the same time domain unit, the number of sizes of the DCI scrambled by the first RNTI sent to the terminal is less than or equal to the first number, and the number of sizes of the DCI scrambled by the second RNTI is less than or equal to the second number.

[0051] ​Correspondingly, the terminal can not expect that in the same time domain unit, the number of sizes of DCI scrambled by the first RNTI that need to be detected is greater than the first number, and the number of sizes of DCI scrambled by the second RNTI that need to be detected is greater than the second number. For example, the first number is 3 and the second number is 1, then the "3+1" requirement can be ensured to be met.

[0052] Accordingly, it can be avoided that the number of sizes of DCI scrambled by the first RNTI and the number of sizes of DCI scrambled by the second RNTI in the same time domain unit are too large, so as to ensure that the number of blind detections (average number) distributed to each size of DCI will not be reduced, ensure good parsing effect for DCI, and avoid affecting the flexibility and performance of physical downlink control channel transmission.

[0053] In one embodiment, the time domain unit includes at least one of the following:

[0054] Slot, time span, symbol.

[0055] In one embodiment, the first RNTI includes at least C-RNTI, and the second RNTI includes RNTI other than C-RNTI.

[0056] In one embodiment, the first number is 3 or 4, and the second number is 1. The embodiments of the present disclosure are mainly described by taking the case where the first number is 3 as an example.

[0057] Figure 2A is another schematic flow chart of a downlink control information detection method according to an embodiment of the present disclosure. As shown in Figure 2A The number of sizes of DCI scrambled by the first radio network temporary identifier (RNTI) that need to be detected in the same time domain unit is greater than the first number, and the number of sizes of DCI scrambled by the second RNTI that need to be detected is greater than the second number, including:

[0058] In step S201, it is not expected that in the same time domain unit, the legacy DCI scrambled by the first RNTI and the DCI for scheduling multiple cells are detected.

[0059] In one embodiment, in the case that the network device includes the MC-DCI in the DCI sent to the terminal, the network device can send the MC-DCI and the legacy DCI scrambled by the first RNTI in different time domain units, that is, in the same time domain unit, only send the MC-DCI and the legacy DCI scrambled by the second RNTI to the terminal, or only send the legacy DCI scrambled by the first RNTI and the legacy DCI scrambled by the second RNTI to the terminal. The sending mode of the MC-DCI and the legacy DCI scrambled by the first RNTI can be Time-Division Multiplexing (TDM).

[0060] Correspondingly, the terminal does not expect to detect the legacy DCI scrambled by the first RNTI and the MC-DCI in the same time domain unit, that is, the terminal only expects to receive the legacy DCI scrambled by the first RNTI and the legacy DCI scrambled by the second RNTI, or receive the MC-DCI and the legacy DCI scrambled by the second RNTI in the same time domain unit.

[0061] Accordingly, in the same time domain unit, the MC-DCI and the legacy DCI scrambled by the first RNTI do not exist at the same time, so the number of sizes of DCI in the same time domain unit does not increase relative to the related art, for example, the requirement of “3+1” can still be met, and the number of sizes of the DCI scrambled by the first RNTI that needs to be detected in the same time domain unit is less than or equal to the first number, and the number of sizes of the DCI scrambled by the second RNTI that needs to be detected is less than or equal to the second number.

[0062] Figure 2B is an application scenario diagram of a downlink control information detection method according to an embodiment of the present disclosure.

[0063] As shown in Figure 2B , the time domain unit is a time slot slot, and in the 5 slots (slot#0, slot#1, slot#2, slot#3, slot#4), the network device sends DCI to the terminal in slot#0 and slot#2.

[0064] The network device can send MC-DCI and legacy DCI scrambled by C-RNTI in different slots by reasonable configuration. For example, the network device sends 3 legacy DCI scrambled by C-RNTI and 1 legacy DCI scrambled by other RNTI than C-RNTI to the terminal in slot #0. The sizes of the legacy DCI scrambled by C-RNTI are size1, size2 and size3 respectively, the size of the legacy DCI scrambled by other RNTI than C-RNTI is size4, and the size of MC-DCI is size5.

[0065] The network device sends 1 MC-DCI (which can be scrambled by C-RNTI or other RNTI) and 1 legacy DCI scrambled by other RNTI than C-RNTI to the terminal in slot #2. The size of the legacy DCI scrambled by other RNTI than C-RNTI is size4, and the size of MC-DCI is size5.

[0066] Accordingly, the number of sizes of DCI in slot #0 and slot #2 can meet the requirement of "3+1", and the terminal does not expect to detect legacy DCI scrambled by the first RNTI and MC-DCI in slot #0, and does not expect to detect legacy DCI scrambled by the first RNTI and MC-DCI in slot #2.

[0067] Figure 3A is a schematic flowchart of still another method for detecting downlink control information according to an embodiment of the present disclosure. As shown in Figure 3A The number of sizes of DCI scrambled by the first RNTI that needs to be detected in the same time domain unit is greater than the first number, and the number of sizes of DCI scrambled by the second RNTI that needs to be detected is greater than the second number include that:

[0068] In step S301, the number of sizes of legacy DCI scrambled by the first RNTI that needs to be detected in the same time domain unit is greater than the first number, and the number of sizes of DCI scrambled by the second RNTI that needs to be detected is greater than the second number.

[0069] In one embodiment, when the network device sends a DCI containing an MC-DCI to the terminal, it can send the MC-DCI and the legacy DCI scrambled by the first RNTI within the same time domain unit. In this case, it can be reasonably configured such that the sum of the number of sizes of the MC-DCI and the number of sizes of the legacy DCI scrambled by the first RNTI within the same time domain unit is less than or equal to a first number, and the number of sizes of the DCI scrambled by the second RNTI is less than or equal to a second number.

[0070] Correspondingly, the terminal does not expect that, within the same time domain unit, the sum of the number of MC-DCI sizes to be detected and the number of legacy DCI sizes scrambled by the first RNTI will be greater than a first number, and the number of DCI sizes to be detected scrambled by the second RNTI will be greater than a second number.

[0071] Accordingly, the number of DCI sizes that need to be detected within the same time domain unit by scrambling the first RNTI is less than or equal to the first number, and the number of DCI sizes that need to be scrambled by the second RNTI is less than or equal to the second number, so that the "3+1" requirement can still be met.

[0072] Figure 3B This is a schematic diagram illustrating an application scenario of a downlink control information detection method according to an embodiment of the present disclosure.

[0073] like Figure 3B As shown, the time domain unit is a time slot. In the five slots (slot#0, slot#1, slot#2, slot#3, slot#4), the network device sends DCI to the terminal in slot#0 and slot#2.

[0074] When transmitting MC-DCI and legacy DCI scrambled by the first RNTI within the same time domain unit, the network device performs reasonable configuration so that the sum of the number of MC-DCI sizes and the number of legacy DCI sizes scrambled by the first RNTI within the same time domain unit is less than or equal to a first number, and the number of DCI sizes scrambled by the second RNTI is less than or equal to a second number.

[0075] For example, in slot #0, three legacy DCIs scrambled with C-RNTI and one DCI scrambled with other RNTIs besides C-RNTI are sent to the terminal. For example, the sizes of the legacy DCIs scrambled with C-RNTI are size1, size2 and size3, and the size of the legacy DCI scrambled with other RNTIs besides C-RNTI is size4.

[0076] In slot#2, 1 MC-DCI (may be scrambled by C-RNTI, or scrambled by other RNTI), 2 legacy DCI scrambled by C-RNTI, and 1 legacy DCI scrambled by other RNTI than C-RNTI are sent to the terminal. For example, the sizes of the legacy DCI scrambled by C-RNTI are size1 and size2 respectively, the size of the legacy DCI scrambled by other RNTI than C-RNTI is size4, and the size of the MC-DCI is size5.

[0077] Accordingly, although the MC-DCI and the legacy DCI scrambled by C-RNTI are sent in slot#2, the number of sizes of the MC-DCI and the legacy DCI scrambled by C-RNTI is still guaranteed to be less than or equal to 3, thereby ensuring that the number of sizes of the DCI in slot#0 and slot#2 both meet the “3+1” requirement. The terminal does not expect the sum of the number of sizes of the MC-DCI to be detected in slot#0 and slot#2 and the number of sizes of the legacy DCI scrambled by the first RNTI to be greater than the first number, and the number of sizes of the legacy DCI scrambled by the second RNTI to be greater than the second number.

[0078] Figure 4 is a schematic flow chart of a downlink control information detection method according to an embodiment of the present disclosure. The downlink control information detection method shown in the embodiment can be performed by a terminal, including but not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, and the like. The terminal can communicate with a network device, including but not limited to a network device in a 4G, 5G, 6G, or the like communication system, such as a base station, a core network, and the like.

[0079] As shown in Figure 4 , the downlink control information detection method can include the following steps:

[0080] In step S401, it is determined that the sum of the number of sizes of the DCI for scheduling multiple cells to be detected and the number of sizes of the DCI scrambled by the first RNTI in the same time domain unit is greater than the first number; wherein the DCI includes at least the DCI for scheduling multiple cells;

[0081] In step S402, a first DCI is determined among the DCI to be detected (i.e. MC-DCI and DCI scrambled by the first RNTI);

[0082] In step S403, no DCI is detected in the search space corresponding to the first DCI.

[0083] In one embodiment, in the case that the network device includes MC-DCI in the DCI sent to the terminal, the network device can determine the sum of the number of sizes of MC-DCI that need to be sent to the terminal and the number of sizes of DCI scrambled by the first RNTI in the same time domain unit. In the case that the sum of the numbers is greater than the first number, the network device can determine the first DCI in the DCI that needs to be sent, and further not send DCI in the search space (SS) corresponding to the first DCI to the terminal. How to determine the first DCI is described in subsequent embodiments.

[0084] Correspondingly, the terminal can determine the sum of the number of sizes of MC-DCI that need to be detected and the number of sizes of DCI scrambled by the first RNTI sent by the network device (in one serving cell) in the same time domain unit. In the case that the sum of the numbers is greater than the first number, the terminal can determine the first DCI in the DCI that needs to be received, and further not monitor DCI in the SS corresponding to the first DCI.

[0085] Accordingly, the number of sizes of DCI in the same time domain unit can be reduced, for example, the first number is 3, then the number of sizes of MC-DCI that the terminal expects to monitor and the number of sizes of legacy DCI scrambled by the first RNTI in the same time domain unit are less than or equal to 3, ensuring that the “3+1” requirement is met.

[0086] According to embodiments of the present disclosure, the sum of the number of sizes of MC-DCI and the number of sizes of legacy DCI scrambled by the first RNTI in the same time domain unit can be avoided, thereby ensuring that the number of blind detections (average number) distributed to each size of DCI will not be reduced, ensuring good resolution effect for DCI, avoiding affecting the flexibility and performance of physical downlink control channel transmission.

[0087] In one embodiment, the time domain unit includes at least one of the following:

[0088] Slot, time span, symbol.

[0089] In one embodiment, the first RNTI includes at least C-RNTI.

[0090] In one embodiment, the first number is 3 or 4.

[0091] Figure 5 is another schematic flowchart of a method for detecting downlink control information according to embodiments of the present disclosure. As shown in FIG. 4, the method includes the following steps.Figure 5 The first DCI is determined in the DCI to be detected according to the priority.

[0092] In step 501, the priority of the DCI to be detected is determined.

[0093] In step 502, the first DCI is determined in the DCI to be detected according to the priority.

[0094] In one embodiment, the network device can determine the priority of the DCI to be sent to the terminal, and then determine the first DCI in the DCI to be detected according to the priority, for example, determine the DCI with the lowest priority as the first DCI, so as not to send the DCI in the SS corresponding to the first DCI, that is, not to send the first DCI.

[0095] Correspondingly, the terminal can determine the priority of the DCI to be detected, and then determine the first DCI in the DCI to be detected according to the priority. The terminal determines the first DCI in the same way as the network device determines the first DCI, so that the network device can determine the same first DCI, that is, the network device does not send the first DCI, and the terminal also does not receive the first DCI. Accordingly, the impact on the high-priority DCI can be avoided, and the high-priority DCI can be successfully sent and received.

[0096] It should be noted that the priority involved in all embodiments of the present disclosure can be agreed upon by the protocol or indicated by the network device, for example, indicated by the network device through a radio resource control (RRC) message. The priority can be related to the parameters of the DCI corresponding service, for example, the lower the service requires the delay, the higher the priority, for example, the higher the service requires the quality of service, the higher the priority.

[0097] In one embodiment, the first DCI is determined in the DCI to be detected according to the priority, including: determining a difference number between the sum of the number and the first number; determining the DCI with the difference number in the DCI to be detected as the first DCI, wherein the priority of each DCI with the difference number is lower than the priority of other DCI in the DCI to be detected.

[0098] Since the number of sizes of the MC-DCI to be sent by the network device to the terminal and the number of sizes of the legacy DCI scrambled by the first RNTI can be more, for example, more than 1 than the first number. In order to ensure that the sum of the number of sizes of the MC-DCI and the number of sizes of the legacy DCI scrambled by the first RNTI in the same time domain unit is less than or equal to the first number, the number of determined first DCI can be equal to 1, or can be greater than 1.

[0099] For example, the difference between the sum of the quantities and the first quantity can be determined, and then the DCI with the difference can be identified as the first DCI among the DCIs to be detected. The first DCI has a lower priority than the other DCIs among the DCIs to be detected. This avoids affecting high-priority DCIs and ensures that high-priority DCIs can be successfully sent and received.

[0100] Figure 6 This is a schematic diagram illustrating an application scenario of a downlink control information detection method according to an embodiment of the present disclosure.

[0101] like Figure 6 As shown, the time domain unit is a time slot. In the five slots (slot#0, slot#1, slot#2, slot#3, slot#4), the network device sends DCI to the terminal in slot#0 and slot#2.

[0102] For example, in slot #0, three legacy DCIs scrambled with C-RNTI and one DCI scrambled with an RNTI other than C-RNTI need to be sent to the terminal. For example, the sizes of the legacy DCIs scrambled with C-RNTI are size1, size2, and size3, and the size of the legacy DCI scrambled with an RNTI other than C-RNTI is size4.

[0103] In slot #2, one MC-DCI (which can be scrambled using C-RNTI or other RNTIs) needs to be sent to the terminal, three legacy DCIs scrambled using C-RNTI, and one legacy DCI scrambled using an RNTI other than C-RNTI. For example, the sizes of the legacy DCIs scrambled using C-RNTI are size1 and size2, the size of the legacy DCI scrambled using an RNTI other than C-RNTI is size4, and the size of the MC-DCI is size5.

[0104] In this case, the sum of the number of MC-DCI sizes that need to be sent to the terminal in slot#2 and the number of legacy DCI sizes scrambled by C-RNTI is 4, which is greater than the first number of 3. The difference between the sum of the numbers and the first number is calculated to be 4-3=1, which means that 1 first DCI can be determined.

[0105] Specifically, the DCI with the lowest priority can be determined as the first DCI in the MC-DCI and the three legacy DCIs scrambled by the C-RNTI, for example, the DCI with the size of size3 is determined as the first DCI, and then the network device does not send the DCI in the SS corresponding to the first DCI, and the terminal also does not detect the DCI. This case can also be referred to as dropping the first DCI.

[0106] Figure 7 is a schematic flowchart of another method of detecting downlink control information according to an embodiment of the present disclosure. As shown in Figure 7 determining the first DCI from the DCIs to be detected according to the priorities comprises:

[0107] In step S701, the priority of the search space (SS) corresponding to the DCI to be detected is determined (the control resource set (CORESET) can also be replaced).

[0108] In step S702, the first SS is determined from the SSs corresponding to the DCIs to be detected according to the priorities, wherein the DCI corresponding to the first SS is the first DCI.

[0109] In one embodiment, the network device can determine the priority of the SS corresponding to the DCI sent to the terminal, and then determine the first SS from the SSs corresponding to the DCIs to be detected according to the priority, for example, determine the SS with the lowest priority as the first SS, so as to determine the DCI corresponding to the first SS as the first DCI, and then do not send the DCI in the first SS, that is, do not send the first DCI.

[0110] Correspondingly, the terminal can determine the priority of the SS corresponding to the DCI to be detected, and then determine the first SS from the SSs corresponding to the DCIs to be detected according to the priority. The terminal determines the first SS in the same way as the network device determines the first SS, so that the network device and the terminal can determine the same first SS, that is, the network device does not send the first DCI in the first SS, and the terminal also does not receive the first DCI in the first SS. Accordingly, the influence on the DCI in the SS with high priority can be avoided, and the DCI in the SS with high priority can be successfully sent and received.

[0111] In one embodiment, determining the first SS from the SSs corresponding to the DCIs to be detected according to the priorities comprises: determining a difference number between the sum and the first number; and determining the SSs with the difference number in the SSs corresponding to the DCIs to be detected as the first SSs, wherein the priority of each of the SSs with the difference number is lower than the priority of other SSs in the SSs corresponding to the DCIs to be detected.

[0112] Since the number of sizes of MC-DCI and the number of sizes of legacy DCI scrambled by the first RNTI that the network device needs to send to the terminal can be more, for example, more than 1 than the first number. In order to ensure that the sum of the number of sizes of MC-DCI and the number of sizes of legacy DCI scrambled by the first RNTI in the same time domain unit is less than or equal to the first number, the determined number of first DCI can be equal to 1, or can be greater than 1.

[0113] For example, the difference between the sum and the first number can be determined, and then in the SS corresponding to the DCI to be detected, the SS of the difference is determined as the first DCI, and the priority of the determined first SS is lower than that of other SSs in the SS corresponding to the DCI to be detected. Accordingly, the influence on the DCI in the high-priority SS can be avoided, and the DCI in the high-priority SS can be ensured to be successfully sent and received.

[0114] Figure 8 is a schematic flow chart of a downlink control information sending method according to an embodiment of the present disclosure. The downlink control information sending method shown in the embodiment can be performed by a network device, which can communicate with a terminal, and the network device includes but is not limited to a base station in a communication system such as a 4G base station, a 5G base station, a 6G base station, etc., and the terminal includes but is not limited to a communication device such as a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, etc.

[0115] As shown in Figure 8 , the downlink control information sending method can include the following steps:

[0116] In step S801, in the same time domain unit, the number of sizes of downlink control information DCI scrambled by a first radio network temporary identifier RNTI sent to the terminal is less than or equal to a first number, and the number of sizes of DCI scrambled by a second RNTI is less than or equal to a second number; wherein the DCI includes at least DCI for scheduling multiple cells.

[0117] In one embodiment, in the case that the network device includes MC-DCI in the DCI sent to the terminal, the network device can configure the DCI scrambled by the first RNTI and the DCI scrambled by the second RNTI reasonably, so that in the same time domain unit, the number of sizes of the DCI scrambled by the first RNTI sent to the terminal is less than or equal to the first number, and the number of sizes of the DCI scrambled by the second RNTI is less than or equal to the second number.

[0118] Correspondingly, the terminal can not expect that in the same time domain unit, the number of sizes of the DCI scrambled by the first RNTI that needs to be detected is greater than the first number, and the number of sizes of the DCI scrambled by the second RNTI that needs to be detected is greater than the second number. For example, the first number is 3 and the second number is 1, then it can be ensured that the "3+1" requirement is met.

[0119] Accordingly, it can be avoided that the number of sizes of the DCI scrambled by the first RNTI and the number of sizes of the DCI scrambled by the second RNTI in the same time domain unit are too large, so as to ensure that the number of blind detections distributed to each size of DCI (the average number) will not be reduced, ensure good parsing effect for DCI, and avoid affecting the flexibility and performance of the physical downlink control channel transmission.

[0120] In one embodiment, the time domain unit includes at least one of the following:

[0121] A time slot slot, a time span span, and a symbol symbol.

[0122] In one embodiment, the first RNTI includes at least a C-RNTI, and the second RNTI includes an RNTI other than the C-RNTI.

[0123] In one embodiment, the first number is 3 or 4, and the second number is 1. Embodiments of the present disclosure are mainly described by taking the case where the first number is 3 as an example.

[0124] In one embodiment, the number of sizes of the DCI scrambled by the first RNTI and the number of sizes of the DCI scrambled by the second RNTI that are sent to the terminal in the same time domain unit are less than or equal to the first number and the second number, respectively, including:

[0125] In the same time domain unit, the legacy DCI scrambled by the first RNTI or the DCI for scheduling multiple cells is sent to the terminal.

[0126] In one embodiment, in the case where the network device includes MC-DCI in the DCI sent to the terminal, the MC-DCI and the legacy DCI scrambled by the first RNTI can be sent in different time domain units, that is, in the same time domain unit, only the MC-DCI and the legacy DCI scrambled by the second RNTI are sent to the terminal, or only the legacy DCI scrambled by the first RNTI and the legacy DCI scrambled by the second RNTI are sent to the terminal. The transmission mode of the MC-DCI and the legacy DCI scrambled by the first RNTI can be time division multiplexing TDM.

[0127] Correspondingly, the terminal does not expect to detect, in the same time domain unit, the legacy DCI scrambled by the first RNTI and the MC-DCI, that is, the terminal only expects to receive, in the same time domain unit, the legacy DCI scrambled by the first RNTI and the legacy DCI scrambled by the second RNTI or the MC-DCI and the legacy DCI scrambled by the second RNTI.

[0128] Accordingly, in the same time domain unit, the MC-DCI and the legacy DCI scrambled by the first RNTI do not exist at the same time, so the number of sizes of DCIs in the same time domain unit does not increase relative to the related art, for example, the “3+1” requirement can still be met, and the number of sizes of the DCIs scrambled by the first RNTI that need to be detected in the same time domain unit is less than or equal to the first number, and the number of sizes of the DCIs scrambled by the second RNTI is less than or equal to the second number.

[0129] In one embodiment, the number of sizes of the DCIs scrambled by the first RNTI and the number of sizes of the DCIs scrambled by the second RNTI that are sent to the terminal in the same time domain unit are less than or equal to the first number and the second number, respectively, including:

[0130] The number of sizes of the legacy DCIs scrambled by the first RNTI that are sent to the terminal in the same time domain unit and the number of sizes of the DCIs for scheduling multiple cells that are sent to the terminal are summed and are less than or equal to the first number, and the number of sizes of the DCIs scrambled by the second RNTI that are sent to the terminal is less than or equal to the second number.

[0131] In one embodiment, in the case where the network device includes the MC-DCI in the DCI sent to the terminal, the network device can send the MC-DCI and the legacy DCI scrambled by the first RNTI in the same time domain unit, and in this case, the number of sizes of the MC-DCI and the number of sizes of the legacy DCI scrambled by the first RNTI in the same time domain unit are summed and are less than or equal to the first number, and the number of sizes of the DCI scrambled by the second RNTI is less than or equal to the second number, by reasonable configuration.

[0132] Correspondingly, the terminal does not expect that, in the same time domain unit, the sum of the number of sizes of the MC-DCI that need to be detected and the number of sizes of the legacy DCI scrambled by the first RNTI is greater than the first number, and the number of sizes of the DCI scrambled by the second RNTI that need to be detected is greater than the second number

[0133] Accordingly, the number of sizes of DCI scrambled by the first RNTI that needs to be detected in the same time domain unit is less than or equal to the first number, and the number of sizes of DCI scrambled by the second RNTI that needs to be detected is less than or equal to the second number, for example, the "3+1" requirement can still be met.

[0134] Figure 9 Fig. 1 is a schematic flowchart of a downlink control information sending method according to an embodiment of the present disclosure. The downlink control information sending method shown in the embodiment can be performed by a network device, which can communicate with a terminal, and the network device includes but is not limited to a base station in a communication system such as a 4G base station, a 5G base station, a 6G base station, etc., and the terminal includes but is not limited to a communication device such as a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, etc.

[0135] As shown in Figure 9 , the downlink control information sending method can include the following steps:

[0136] In step S901, it is determined that the sum of the number of sizes of DCI for scheduling multiple cells and the number of sizes of DCI scrambled by the first RNTI that needs to be sent to the terminal in the same time domain unit is greater than the first number; wherein the DCI includes at least DCI for scheduling multiple cells;

[0137] In step S902, the first DCI is determined among the DCI that needs to be detected;

[0138] In step S903, DCI is not sent in the search space corresponding to the first DCI.

[0139] In one embodiment, in the case that the network device includes MC-DCI in the DCI sent to the terminal, the network device can determine the sum of the number of sizes of MC-DCI that needs to be sent to the terminal and the number of sizes of DCI scrambled by the first RNTI in the same time domain unit. In the case that the sum of the numbers is greater than the first number, the network device can determine the first DCI among the DCI that needs to be sent, and then does not send DCI to the terminal in the search space (Search Space, SS) corresponding to the first DCI. How to determine the first DCI is described in subsequent embodiments.

[0140] Correspondingly, the terminal can determine the sum of the number of sizes of MC-DCI that needs to be detected and the number of sizes of DCI scrambled by the first RNTI sent by the network device (in one serving cell) in the same time domain unit. In the case that the sum of the numbers is greater than the first number, the terminal can determine the first DCI among the DCI that needs to be received, and then does not monitor DCI in the SS corresponding to the first DCI.

[0141] According to the method, the number of sizes of DCI in the same time domain unit can be reduced, for example, the first number is 3, and the number of sizes of MC-DCI expected to be monitored by the terminal and the number of sizes of legacy DCI scrambled by the first RNTI in the same time domain unit are less than or equal to 3, so that the “3+1” requirement is met.

[0142] According to the embodiments of the present disclosure, the sum of the number of sizes of MC-DCI and the number of sizes of legacy DCI scrambled by the first RNTI in the same time domain unit can be avoided to be too large, so that the number of blind detections (average number) distributed to each size of DCI is not reduced, the good resolution effect of DCI is ensured, and the flexibility and performance of the physical downlink control channel transmission are avoided to be affected.

[0143] In one embodiment, the time domain unit includes at least one of the following:

[0144] Slot, time span, symbol.

[0145] In one embodiment, the first RNTI includes at least a C-RNTI.

[0146] In one embodiment, the first number is 3 or 4.

[0147] In one embodiment, the determining the first DCI from the DCI to be detected includes: determining the priority of the DCI to be detected; and determining the first DCI from the DCI to be detected according to the priority.

[0148] In one embodiment, the network device can determine the priority of the DCI sent to the terminal, and then determine the first DCI from the DCI to be detected according to the priority, for example, determine the DCI with the lowest priority as the first DCI, so that no DCI is sent in the SS corresponding to the first DCI, that is, no first DCI is sent.

[0149] Correspondingly, the terminal can determine the priority of the DCI to be detected, and then determine the first DCI from the DCI to be detected according to the priority. The terminal determines the first DCI in the same way as the network device determines the first DCI, so that the network device can determine the same first DCI, that is, the network device does not send the first DCI, and the terminal also does not receive the first DCI. According to the method, the high-priority DCI can be avoided to be affected, and the high-priority DCI can be ensured to be successfully sent and received.

[0150] In an embodiment, the determining the first DCI from the DCIs to be detected according to the priorities comprises: determining a difference number between the sum of the number and the first number; determining the first DCI as a DCI of the difference number from the DCIs to be detected, wherein a priority of each DCI of the difference number is lower than a priority of other DCIs to be detected.

[0151] Since the number of sizes of the MC-DCI to be sent by the network device to the terminal and the number of sizes of the legacy DCI scrambled by the first RNTI can be large, for example, more than 1 beyond the first number. In order to ensure that the sum of the number of sizes of the MC-DCI and the number of sizes of the legacy DCI scrambled by the first RNTI in the same time domain unit is less than or equal to the first number, the determined number of the first DCI can be equal to 1 or greater than 1.

[0152] For example, the difference number between the sum of the number and the first number can be determined, and then the first DCI is determined as a DCI of the difference number from the DCIs to be detected, and the priority of the determined first DCI is lower than the priority of other DCIs to be detected. In this way, the high-priority DCI can be avoided from being affected, and the high-priority DCI can be successfully sent and received.

[0153] In an embodiment, the determining the first DCI from the DCIs to be detected according to the priorities comprises: determining a priority of a search space (SS) corresponding to the DCIs to be detected; and determining a first SS from the SSs corresponding to the DCIs to be detected according to the priority, wherein the first DCI is a DCI corresponding to the first SS.

[0154] In an embodiment, the network device can determine a priority of an SS corresponding to the DCIs to be sent to the terminal, and then determine a first SS from the SSs corresponding to the DCIs to be detected according to the priority, for example, determine the SS with the lowest priority as the first SS, so as to determine the first DCI as a DCI corresponding to the first SS, and then no DCI is sent in the first SS, that is, the first DCI is not sent.

[0155] Correspondingly, the terminal can determine a priority of an SS corresponding to the DCIs to be detected, and then determine a first SS from the SSs corresponding to the DCIs to be detected according to the priority. The terminal determines the first SS in the same way as the network device determines the first SS, so that the network device and the terminal can determine the same first SS, that is, the network device does not send the first DCI in the first SS, and the terminal also does not receive the first DCI in the first SS. In this way, the DCI in the high-priority SS can be avoided from being affected, and the DCI in the high-priority SS can be successfully sent and received.

[0156] In one embodiment, the determining the first SS from the SSs corresponding to the DCI to be detected according to the priority comprises: determining a difference number between the sum of the number and the first number; and determining the difference number of SSs as the first SS from the SSs corresponding to the DCI to be detected, wherein the priority of each of the difference number of SSs is lower than the priority of other SSs corresponding to the DCI to be detected.

[0157] Since the number of sizes of the MC-DCI to be sent by the network device to the terminal and the number of sizes of the legacy DCI scrambled by the first RNTI can be large, for example, more than 1 beyond the first number. In order to ensure that the sum of the number of sizes of the MC-DCI and the number of sizes of the legacy DCI scrambled by the first RNTI in the same time domain unit is less than or equal to the first number, the determined number of first DCIs can be equal to 1 or greater than 1.

[0158] For example, the difference number between the sum of the number and the first number can be determined, and then the difference number of SSs corresponding to the DCI to be detected is determined as the first DCI, and the priority of the determined first SS is lower than the priority of other SSs corresponding to the DCI to be detected. In this way, the influence on the DCI in the high-priority SS can be avoided, and the DCI in the high-priority SS can be successfully sent and received.

[0159] Corresponding to the above-mentioned embodiments of the downlink control information detection method and the downlink control information sending method, the present disclosure also provides embodiments of a downlink control information detection device and a downlink control information sending device.

[0160] Figure 10 is a schematic block diagram of a downlink control information detection device according to an embodiment of the present disclosure. The downlink control information detection device shown in the embodiment can be a terminal, or a device composed of modules in a terminal, which includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, and the like. The terminal can communicate with a network device, which includes but is not limited to a network device in a 4G, 5G, 6G, and the like communication system, such as a base station, a core network, and the like.

[0161] As shown in Figure 10 , the downlink control information detection device comprises:

[0162] The processing module 1001 is configured to expect that, in the same time domain unit, the number of sizes of DCI scrambled by a first radio network temporary identifier (RNTI) that needs to be detected is greater than a first number, and the number of sizes of DCI scrambled by a second RNTI that needs to be detected is greater than a second number, wherein the DCI at least includes DCI for scheduling multiple cells.

[0163] In one embodiment, the processing module is configured to expect that, in the same time domain unit, the legacy DCI scrambled by the first RNTI and the DCI for scheduling multiple cells are not detected.

[0164] In one embodiment, the processing module is configured to expect that, in the same time domain unit, the sum of the number of sizes of the legacy DCI scrambled by the first RNTI that needs to be detected and the number of sizes of the DCI for scheduling multiple cells is greater than the first number, and the number of sizes of the DCI scrambled by the second RNTI that needs to be detected is greater than the second number.

[0165] In one embodiment, the time domain unit includes at least one of the following:

[0166] A slot, a span, a symbol.

[0167] In one embodiment, the first RNTI at least includes a cell radio network temporary identifier (C-RNTI), and the second RNTI includes an RNTI other than the C-RNTI.

[0168] In one embodiment, the first number is 3 or 4, and the second number is 1.

[0169] Figure 11 Fig. 1 is a schematic block diagram of a downlink control information detection apparatus according to an embodiment of the present disclosure. The downlink control information detection apparatus shown in the embodiment can be a terminal, or an apparatus composed of modules in a terminal, and the terminal includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, and the like. The terminal can communicate with a network device, and the network device includes but is not limited to a network device in a 4G, 5G, 6G, and the like communication system, such as a base station, a core network, and the like.

[0170] As shown in Fig. 1, the downlink control information detection apparatus includes: Figure 11

[0171] ​The processing module 1101 is configured to determine that the sum of the number of sizes of DCI scrambled by a first RNTI and the number of sizes of DCI for scheduling multiple cells that need to be detected in a same time domain unit is greater than a first number; wherein the DCI includes at least DCI for scheduling multiple cells; and determine a first DCI from the DCI that needs to be detected.

[0172] The receiving module 1102 is configured to not detect DCI in a search space corresponding to the first DCI.

[0173] In one embodiment, the processing module is configured to determine a priority of the DCI that needs to be detected; and determine the first DCI from the DCI that needs to be detected according to the priority.

[0174] In one embodiment, the processing module is configured to determine a difference number between the sum and the first number; and determine the first DCI from the DCI of the difference number that needs to be detected, wherein a priority of each DCI of the DCI of the difference number is lower than a priority of other DCI that needs to be detected.

[0175] In one embodiment, the processing module is configured to determine a priority of a search space SS corresponding to the DCI that needs to be detected; and determine a first SS from the SS corresponding to the DCI that needs to be detected according to the priority, wherein the first SS corresponds to the first DCI.

[0176] In one embodiment, the processing module is configured to determine a difference number between the sum and the first number; and determine the first SS from the SS of the difference number corresponding to the DCI that needs to be detected, wherein a priority of each SS of the SS of the difference number is lower than a priority of other SS corresponding to the DCI that needs to be detected.

[0177] In one embodiment, the time domain unit includes at least one of the following:

[0178] a slot, a span, and a symbol.

[0179] In one embodiment, the first RNTI includes at least a cell radio network temporary identifier C-RNTI.

[0180] In one embodiment, the first number is 3 or 4.

[0181] Figure 12is a schematic block diagram of a downlink control information sending apparatus according to an embodiment of the present disclosure. The downlink control information sending apparatus shown in this embodiment can be a network device, or an apparatus composed of modules in a network device, which can communicate with a terminal, including but not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, and the like. The network device includes but is not limited to a network device in a 4G, 5G, 6G, and the like communication system, such as a base station, a core network, and the like.

[0182] As shown in Figure 12 , the downlink control information sending apparatus includes:

[0183] The processing module 1201 is configured to send, to a terminal in a same time domain unit, a number of sizes of downlink control information scrambled by a first radio network temporary identifier (RNTI) being less than or equal to a first number, and a number of sizes of DCI scrambled by a second RNTI being less than or equal to a second number; wherein the DCI includes at least DCI for scheduling multiple cells.

[0184] In one embodiment, the processing module is configured to send, to the terminal in the same time domain unit, legacy DCI scrambled by the first RNTI or the DCI for scheduling multiple cells.

[0185] In one embodiment, the processing module is configured to send, to the terminal in the same time domain unit, a number of sizes of legacy DCI scrambled by the first RNTI and a number of sizes of the DCI for scheduling multiple cells to the terminal, and a sum of the number of sizes of the legacy DCI scrambled by the first RNTI and the number of sizes of the DCI for scheduling multiple cells to the terminal being less than or equal to the first number, and a number of sizes of DCI scrambled by the second RNTI being less than or equal to the second number.

[0186] Figure 13 is a schematic block diagram of a downlink control information sending apparatus according to an embodiment of the present disclosure. The downlink control information sending apparatus shown in this embodiment can be a network device, or an apparatus composed of modules in a network device, which can communicate with a terminal, including but not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, and the like. The network device includes but is not limited to a network device in a 4G, 5G, 6G, and the like communication system, such as a base station, a core network, and the like.

[0187] As shown in Figure 13 , the downlink control information sending apparatus includes:

[0188] The processing module 1301 is configured to determine that the sum of the number of sizes of DCI for scheduling multiple cells and the number of sizes of DCI scrambled by the first RNTI which need to be sent to the terminal in the same time domain unit is greater than the first number; wherein the DCI at least includes DCI for scheduling multiple cells; and determine the first DCI from the DCI which needs to be detected.

[0189] The sending module 1302 is configured to not send DCI in the search space corresponding to the first DCI.

[0190] In one embodiment, the processing module is configured to determine the priority of the DCI which needs to be detected; and determine the first DCI from the DCI which needs to be detected according to the priority.

[0191] In one embodiment, the processing module is configured to determine the number of differences between the sum and the first number; and determine the DCI with the number of differences from the DCI which needs to be detected as the first DCI, wherein the priority of each DCI with the number of differences is lower than the priority of other DCI which needs to be detected.

[0192] In one embodiment, the processing module is configured to determine the priority of the search space SS corresponding to the DCI which needs to be detected; and determine the first SS from the SS corresponding to the DCI which needs to be detected according to the priority, wherein the DCI corresponding to the first SS is the first DCI.

[0193] In one embodiment, the processing module is configured to determine the number of differences between the sum and the first number; and determine the SS with the number of differences from the SS corresponding to the DCI which needs to be detected as the first SS, wherein the priority of each SS with the number of differences is lower than the priority of other SS corresponding to the DCI which needs to be detected.

[0194] As to the apparatus in the above embodiments, the specific manners in which various modules perform operations have been described in details in the embodiments of the related methods, and will not be described in details here.

[0195] For the apparatus embodiment, since it basically corresponds to the method embodiment, the relevant part can be seen from the part of the method embodiment. The apparatus embodiment described above is only illustrative, wherein the modules described as separate components can or can not be physically separated, and the components displayed as modules can or can not be physical modules, i.e., can be located in one place or distributed to multiple network modules. Part or all of the modules can be selected to achieve the purpose of the embodiment according to actual needs. Those skilled in the art can understand and implement it without creative labor.

[0196] The embodiment of the present disclosure further provides a communication device, comprising: a processor; a memory for storing a computer program; wherein when the computer program is executed by the processor, the downlink control information detection method of any one of the above embodiments is realized.

[0197] The embodiment of the present disclosure further provides a communication device, comprising: a processor; a memory for storing a computer program; wherein when the computer program is executed by the processor, the downlink control information detection method of any one of the above embodiments is realized.

[0198] The embodiment of the present disclosure further provides a computer readable storage medium for storing a computer program, when the computer program is executed by the processor, the steps of the downlink control information detection method of any one of the above embodiments are realized.

[0199] The embodiment of the present disclosure further provides a computer readable storage medium for storing a computer program, when the computer program is executed by the processor, the steps of the downlink control information detection method of any one of the above embodiments are realized.

[0200] As shown in Figure 14 , Figure 14 is a schematic block diagram of an apparatus 1400 for downlink control information transmission according to an embodiment of the present disclosure. The apparatus 1400 can be provided as a base station. Referring to Figure 14 , the apparatus 1400 comprises a processing component 1422, a wireless transmit / receive component 1424, an antenna component 1426, and a signal processing part specific to the wireless interface, and the processing component 1422 can further comprise one or more processors. One of the processors in the processing component 1422 can be configured to realize the downlink control information transmission method of any one of the above embodiments.

[0201] Figure 15is a schematic block diagram of an apparatus 1500 for downlink control information detection, illustrated according to embodiments of the present disclosure. The apparatus 1500 can be a mobile phone, a computer, a digital broadcast terminal, a message communicator, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0202] Referring to Figure 15 The apparatus 1500 can include one or more of the following components: a processing component 1502, a memory 1504, a power supply component 1506, a multimedia component 1508, an audio component 1510, an input / output (I / O) interface 1512, a sensor component 1514 and a communication component 1516.

[0203] The processing component 1502 usually governs overall operations of the apparatus 1500, such as operations associated with displaying, making phone calls, data communications, camera operations and recording operations. The processing component 1502 can include one or more processors 1520 to execute instructions to complete all or part of steps of the above method for downlink control information detection. Further, the processing component 1502 can include one or more modules to facilitate interaction between the processing component 1502 and other components. For example, the processing component 1502 can include a multimedia module to facilitate the interaction between the multimedia component 1508 and the processing component 1502.

[0204] The memory 1504 is configured to store various types of data to support operations of the apparatus 1500. Examples of these data include instructions, contact data, phonebook data, messages, pictures, videos and so on for any application or method operating on the apparatus 1500. The memory 1504 can be realized by any type of volatile or nonvolatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0205] The power supply component 1506 supplies electrical power for the various components of the apparatus 1500. The power supply component 1506 can include a power supply management system, one or more power supplies, and other components associated with generating, managing and distributing power for the apparatus 1500.

[0206] The multimedia component 1508 includes a screen providing an output interface between the device 1500 and a user. In some embodiments, the screen includes a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swiping, and gestures on the touch panel. The touch sensors can not only sense a boundary of a touching or swiping action, but also detect duration and pressure related to the touching or swiping action. In some embodiments, the multimedia component 1508 includes a front camera and / or a rear camera. When the device 1500 is in an operation mode, such as a camera mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front and rear camera can be a fixed optical lens system or have a focal length and optical zooming capability.

[0207] The audio component 1510 is configured to output and / or input audio signals. For example, the audio component 1510 includes a microphone (MIC) to receive an external audio signal when the device 1500 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 1504 or transmitted via the communication component 1516. In some embodiments, the audio component 1510 further includes a speaker for outputting audio signals.

[0208] The I / O interface 1512 provides an interface between the processing component 1502 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0209] The sensor component 1514 includes one or more sensors to provide various state assessments for the device 1500. For example, the sensor component 1514 can detect an open / closed state of the device 1500, relative positioning of components, such as a display and a keypad of the device 1500, a change in position of the device 1500 or a component of the device 1500, presence or absence of user contact with the device 1500, an orientation or acceleration / deceleration of the device 1500, and a temperature change of the device 1500. The sensor component 1514 can include a proximity sensor configured to detect presence of an object in proximity to the device 1500 without any physical contact. The sensor component 1514 can also include a light sensor, such as a CMOS or CCD image sensor, for use in an imaging application. In some embodiments, the sensor component 1514 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0210] The communication component 1516 is configured to facilitate wired or wireless communication between the device 1500 and other devices. The device 1500 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G LTE, 5G NR, or a combination thereof. In an exemplary embodiment, the communication component 1516 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1516 further includes a Near Field Communication (NFC) module to facilitate close proximity communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technology.

[0211] In an exemplary embodiment, the device 1500 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements, for performing the above-described downlink control information detection method.

[0212] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as the memory 1504 including instructions, is also provided, which can be executed by the processor 1520 of the device 1500 to complete the above-described downlink control information detection method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0213] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the aspects disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure following, in general, the principles of the present disclosure and including such features to the extent that they are not disclosed in the prior art. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0214] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated, and that various modifications and changes can be made without departing from the scope of the present disclosure. The scope of the present disclosure is limited only by the claims that follow.

[0215] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0216] The above describes in detail the method and device provided by the embodiments of the present disclosure. The principles and implementation manners of the present disclosure are described by using specific examples. The above description of the embodiments is only used to help understand the method of the present disclosure and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present disclosure, the specific implementation manners and application ranges can be changed. In summary, the content of the present description should not be understood as a limitation of the present disclosure.

Claims

1. A method for detecting downlink control information, characterized in that, The method, executed by a terminal, includes: It is not expected that within the same time domain unit, the number of downlink control information (DCI) sizes scrambled by the first radio network temporary identifier (RNTI) to be detected will be greater than the first number, and the number of DCI sizes scrambled by the second RNTI to be detected will be greater than the second number; wherein, the first RNTI includes at least the cell radio network temporary identifier (C-RNTI), and the second RNTI includes RNTIs other than C-RNTI. The DCI scrambled by the first RNTI and the DCI scrambled by the second RNTI include at least the DCI used for scheduling multiple cells. It is not expected that the conventional DCI scrambled by the first RNTI and the DCI used for scheduling multiple cells will be detected in the same time domain unit. The maximum number of blind detections of the Physical Downlink Control Channel (PDCCH) in the same time domain unit is fixed, and the number of blind detections is distributed across each size of DCI in the same time domain unit.

2. The method according to claim 1, characterized in that, The time-domain unit includes at least one of the following: Slot, span, symbol.

3. The method according to claim 1, characterized in that, The first quantity is 3 or 4, and the second quantity is 1.

4. A method for detecting downlink control information, characterized in that, The method, executed by a terminal, includes: The sum of the number of DCI sizes that need to be detected for scheduling multiple cells within the same time domain unit and the number of DCI sizes scrambled by the first RNTI is greater than a first number; wherein the first RNTI includes at least the Cell Radio Network Temporary Identifier (C-RNTI). Determine the priority of the DCI to be detected; determine the first DCI from the DCIs to be detected according to the priority; or, determine the priority of the search space SS corresponding to the DCI to be detected; determine the first SS from the SS corresponding to the DCI to be detected according to the priority, wherein the DCI corresponding to the first SS is the first DCI. DCI is not detected in the search space corresponding to the first DCI; Wherein, determining the first DCI among the DCIs to be detected according to the priority includes: determining the number of differences between the sum of the quantities and the first quantity; determining the DCI with the number of differences as the first DCI among the DCIs to be detected, wherein the priority of each DCI in the number of differences is lower than the priority of other DCIs in the DCIs to be detected; or, The step of determining the first SS among the SSs corresponding to the DCI to be detected according to the priority includes: determining the difference between the sum of the quantities and the first quantity; determining the SS with the difference among the SSs corresponding to the DCI to be detected as the first SS, wherein the priority of each SS among the difference is lower than the priority of other SSs among the SSs corresponding to the DCI to be detected.

5. The method according to claim 4, characterized in that, The time-domain unit includes at least one of the following: Slot, span, symbol.

6. The method according to claim 4, characterized in that, The first quantity is 3 or 4.

7. A method for transmitting downlink control information, characterized in that, Performed by a network device, the method includes: Within the same time domain unit, the number of downlink control information (DCI) scrambled by the first radio network temporary identifier (RNTI) sent to the terminal is less than or equal to the first number, and the number of DCI scrambled by the second RNTI is less than or equal to the second number; the first RNTI includes at least the cell radio network temporary identifier (C-RNTI), and the second RNTI includes RNTIs other than C-RNTI. The DCI scrambled by the first RNTI and the DCI scrambled by the second RNTI include at least the DCI for scheduling multiple cells. It is not expected that the conventional DCI scrambled by the first RNTI and the DCI for scheduling multiple cells will be sent to the terminal in the same time domain unit. In the same time domain unit, the maximum number of blind detections of the physical downlink control channel PDCCH by the terminal is fixed, and the number of blind detections is distributed across each size of DCI in the same time domain unit.

8. The method according to claim 7, characterized in that, Within the same time domain unit, the number of downlink control information (DCI) scrambled by the first radio network temporary identifier (RNTI) sent to the terminal is less than or equal to a first number, and the number of DCI scrambled by the second RNTI is less than or equal to a second number, including: Within the same time domain unit, the terminal is sent either a conventional DCI scrambled by the first RNTI or a DCI used for scheduling multiple cells.

9. A method for transmitting downlink control information, characterized in that, Performed by a network device, the method includes: The sum of the number of DCI sizes that need to be sent to the terminal for scheduling multiple cells within the same time domain unit and the number of DCI sizes scrambled by the first RNTI is greater than a first number; wherein, the first RNTI includes at least the Cell Radio Network Temporary Identifier (C-RNTI). Determine the priority of the DCI to be detected; determine the first DCI from the DCIs to be detected according to the priority; or, determine the priority of the search space SS corresponding to the DCI to be detected; determine the first SS from the SS corresponding to the DCI to be detected according to the priority, wherein the DCI corresponding to the first SS is the first DCI. Do not send DCI in the search space corresponding to the first DCI; Wherein, determining the first DCI among the DCIs to be detected according to the priority includes: determining the number of differences between the sum of the quantities and the first quantity; determining the DCI with the number of differences as the first DCI among the DCIs to be detected, wherein the priority of each DCI in the number of differences is lower than the priority of other DCIs in the DCIs to be detected; or, The step of determining the first SS among the SSs corresponding to the DCI to be detected according to the priority includes: determining the difference between the sum of the quantities and the first quantity; determining the SS with the difference among the SSs corresponding to the DCI to be detected as the first SS, wherein the priority of each SS among the difference is lower than the priority of other SSs among the SSs corresponding to the DCI to be detected.

10. A downlink control information detection device, characterized in that, The device includes: The processing module is configured to prevent the number of downlink control information sizes scrambled by a first radio network temporary identifier (RNTI) from being detected within the same time domain unit from exceeding a first number, and the number of DCI sizes scrambled by a second RNTI from being detected from exceeding a second number. The first RNTI includes at least a cell radio network temporary identifier (C-RNTI), and the second RNTI includes RNTIs other than C-RNTI. The DCIs scrambled by the first RNTI and the DCIs scrambled by the second RNTI include at least DCIs used for scheduling multiple cells. The module is configured to prevent the detection of conventional DCIs scrambled by the first RNTI and the DCIs used for scheduling multiple cells within the same time domain unit. Within the same time domain unit, the maximum number of blind detections of the Physical Downlink Control Channel (PDCCH) is fixed, and the number of blind detections is distributed across each size of DCI within the same time domain unit.

11. A downlink control information detection device, characterized in that, The device includes: The processing module is configured to determine that the sum of the number of DCI sizes for scheduling multiple cells to be detected within the same time domain unit and the number of DCI sizes scrambled by a first RNTI is greater than a first number; wherein the first RNTI includes at least a Cell Radio Network Temporary Identifier (C-RNTI); determine the priority of the DCIs to be detected; determine a first DCI from the DCIs to be detected according to the priority; or, determine the priority of the search space (SS) corresponding to the DCI to be detected; determine a first SS from the SS corresponding to the DCI to be detected according to the priority, wherein the DCI corresponding to the first SS is the first DCI; The receiving module is configured not to detect DCI in the search space corresponding to the first DCI; Wherein, determining the first DCI among the DCIs to be detected according to the priority includes: determining the number of differences between the sum of the quantities and the first quantity; determining the DCI with the number of differences as the first DCI among the DCIs to be detected, wherein the priority of each DCI in the number of differences is lower than the priority of other DCIs in the DCIs to be detected; or, The step of determining the first SS among the SSs corresponding to the DCI to be detected according to the priority includes: determining the difference between the sum of the quantities and the first quantity; determining the SS with the difference among the SSs corresponding to the DCI to be detected as the first SS, wherein the priority of each SS among the difference is lower than the priority of other SSs among the SSs corresponding to the DCI to be detected.

12. A downlink control information transmitting device, characterized in that, The device includes: The processing module is configured to send to the terminal, within the same time domain unit, a number of downlink control information sizes scrambled by a first radio network temporary identifier (RNTI) less than or equal to a first number, and a number of DCI sizes scrambled by a second RNTI less than or equal to a second number; wherein the first RNTI includes at least a cell radio network temporary identifier (C-RNTI), and the second RNTI includes RNTIs other than C-RNTI; the DCI includes at least a DCI for scheduling multiple cells; it is not desirable to send the conventional DCI scrambled by the first RNTI and the DCI for scheduling multiple cells to the terminal within the same time domain unit; within the same time domain unit, the maximum number of blind detections of the physical downlink control channel (PDCCH) by the terminal is fixed, and the number of blind detections is distributed across each size of DCI in the same time domain unit.

13. A downlink control information transmitting device, characterized in that, The device includes: The processing module is configured to determine that the sum of the number of DCI sizes for scheduling multiple cells to be sent to the terminal within the same time domain unit and the number of DCI sizes scrambled by a first RNTI is greater than a first number; wherein the first RNTI includes at least a Cell Radio Network Temporary Identifier (C-RNTI); determine the priority of the DCIs to be detected; determine a first DCI from the DCIs to be detected according to the priority; or, determine the priority of the search space (SS) corresponding to the DCI to be detected; determine a first SS from the SS corresponding to the DCI to be detected according to the priority, wherein the DCI corresponding to the first SS is the first DCI. The sending module is configured not to send DCIs in the search space corresponding to the first DCI; Wherein, determining the first DCI among the DCIs to be detected according to the priority includes: determining the number of differences between the sum of the quantities and the first quantity; determining the DCI with the number of differences as the first DCI among the DCIs to be detected, wherein the priority of each DCI in the number of differences is lower than the priority of other DCIs in the DCIs to be detected; or, The step of determining the first SS among the SSs corresponding to the DCI to be detected according to the priority includes: determining the difference between the sum of the quantities and the first quantity; determining the SS with the difference among the SSs corresponding to the DCI to be detected as the first SS, wherein the priority of each SS among the difference is lower than the priority of other SSs among the SSs corresponding to the DCI to be detected.

14. A communication device, characterized in that, include: processor; Memory used to store computer programs; When the computer program is executed by the processor, it implements the downlink control information detection method according to any one of claims 1 to 6.

15. A communication device, characterized in that, include: processor; Memory used to store computer programs; When the computer program is executed by the processor, it implements the downlink control information transmission method according to any one of claims 7 to 9.

16. A computer-readable storage medium for storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps in the downlink control information detection method according to any one of claims 1 to 6.

17. A computer-readable storage medium for storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the downlink control information transmission method according to any one of claims 7 to 9.

Images