Downlink control information detection method and device, downlink control information sending method and device and storage medium

Abstract

The invention provides a downlink control information detection method and device, a downlink control information sending method and device, and a storage medium, and the downlink control information detection method comprises the steps: detecting and receiving corresponding DCI in a time unit based on the priority order of a plurality of DCI; wherein the plurality of pieces of DCI at least comprise group public DCI used for simultaneously scheduling terminal services of a plurality of terminals; and stopping DCI detection in the time unit in response to determining that the number of DCI detected and received in the time unit reaches the maximum number of DCI supported to be detected by the terminal in one time unit. In the present disclosure, under the condition that the number of DCI to be received by the terminal in one time unit exceeds the maximum number of DCI supported by the terminal, both the terminal and the base station can accurately determine the DCI detected and received by the terminal, thereby avoiding the problem of unpredictable terminal behavior, enabling the terminal and the base station to have consistent understanding of data transmission and reception, and avoiding reduction of system performance.

Description

[0001] Divisional Application Statement

[0002] This application is a divisional application based on the Chinese invention patent application with application number 202280000068.2, application date January 11, 2022, and invention name “Downlink control information detection, sending method and device, storage medium”.

[0003] Claiming priority

[0004] This disclosure claims patent priority of PCT application with application number PCT / CN2021 / 135145 and international filing date of December 2, 2021. Technical Field

[0005] The present disclosure relates to the field of communications, and in particular to a method and device for detecting and sending downlink control information, and a storage medium. Background Art

[0006] At present, different service types have different characteristics, such as arrival period, delay, transmission rate, etc. The network side needs to schedule the data transmission of the corresponding service type through multiple DCI (Downlink Control Information). When the network side needs to transmit multiple service types, it may be necessary to transmit multiple DCIs in the same time unit.

[0007] Since the terminal needs to detect and receive DCI in multiple search spaces, or the terminal needs to detect and receive multiple DCIs encrypted by different G-RNTIs (Group-Radio Network Temporary Identity) in one search space, the number of DCIs that need to be detected and received may exceed the maximum number of DCIs supported by the terminal.

[0008] When the number of DCIs sent by the network in the same time unit exceeds the maximum number of DCIs supported by the terminal, the behavior of the terminal is unpredictable, which may lead to inconsistent understanding of data transmission and reception between the network and the terminal, ultimately resulting in system performance degradation. Summary of the invention

[0009] In order to overcome the problems existing in the related art, the embodiments of the present disclosure provide a method and device for detecting and sending downlink control information, and a storage medium.

[0010] According to a first aspect of an embodiment of the present disclosure, a method for detecting downlink control information is provided, the method being applied to a terminal, comprising:

[0011] In a time unit, based on the priority order of multiple downlink control information DCIs, corresponding DCIs are detected and received; wherein the multiple DCIs at least include a group common DCI for simultaneously scheduling terminal services of multiple terminals;

[0012] In response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported for detection by the terminal within one time unit, stopping DCI detection within the time unit.

[0013] Optionally, the maximum DCI number is a maximum unicast DCI number;

[0014] The detecting and receiving corresponding DCI based on the priority order of multiple downlink control information DCIs within a time unit includes:

[0015] Within one of the time units, detecting and receiving corresponding DCI on a group common search space based on a first priority order; wherein the group common search space is a common search space at least used to transmit the group common DCI;

[0016] In response to determining that the number of DCIs detected and received on the group common search space is less than the maximum number of unicast DCIs, the corresponding DCI is detected and received on the terminal specific search space USS based on a second priority order; wherein the USS is a search space corresponding to the terminal for transmitting unicast DCI.

[0017] Optionally, the maximum DCI number is a maximum unicast DCI number;

[0018] The detecting and receiving corresponding DCI based on the priority order of multiple downlink control information DCIs within a time unit includes:

[0019] Within one of the time units, detecting and receiving corresponding DCI on a terminal-specific search space USS based on a second priority order; wherein the USS is a search space corresponding to the terminal and used to transmit unicast DCI;

[0020] In response to determining that the number of DCIs detected and received on the USS is less than the maximum unicast DCI number, corresponding DCIs are detected and received on a group common search space based on a first priority order; wherein the group common search space is a common search space used at least to transmit the group common DCI.

[0021] Optionally, the first priority order is used to indicate at least one of the following:

[0022] The priority order of the group common search space identifier is from high to low or from low to high;

[0023] The priority order of the group wireless network temporary identifier values ​​from high to low or from low to high;

[0024] The priority order of terminal services;

[0025] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0026] Optionally, the second priority order is used to indicate at least one of the following:

[0027] The search space identifies the priority order from high to low or from low to high;

[0028] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0029] Optionally, the method further comprises any of the following:

[0030] Based on the agreement, determine the first priority order;

[0031] The first priority order is determined based on radio resource control RRC signaling sent by the base station.

[0032] Optionally, the method further comprises any of the following:

[0033] Determine the second priority order based on the agreement;

[0034] The second priority order is determined based on radio resource control RRC signaling sent by the base station.

[0035] Optionally, the group-common DCI detected and received in the group-common search space is regarded as unicast downlink DCI.

[0036] Optionally, the method further comprises:

[0037] The maximum number of DCIs is determined based on the terminal capability, wherein the terminal capability is used to indicate the maximum number of group common DCIs supported for detection by the terminal within one time unit.

[0038] Optionally, the terminal capability is used to indicate the maximum number of group common DCIs supported for detection by the terminal within one time unit on a serving cell.

[0039] Optionally, the detecting and receiving corresponding DCI based on a priority order of multiple downlink control information DCIs within a time unit includes:

[0040] Within one of the time units, detecting and receiving the group common DCI on a group common search space based on a third priority order; wherein the group common search space is a common search space used at least for transmitting the group common DCI;

[0041] In response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported for detection by the terminal within one time unit, stopping DCI detection within the time unit includes:

[0042] In response to determining that the number of the group-common DCIs that have been detected and received within the time unit reaches the maximum number of group-common DCIs indicated by the terminal capability, stopping DCI detection on the group-common search space within the time unit.

[0043] Optionally, the third priority order is used to indicate at least one of the following:

[0044] The priority order of the group common search space identifier is from high to low or from low to high;

[0045] The priority order of the group wireless network temporary identifier values ​​from high to low or from low to high;

[0046] The priority order of terminal services;

[0047] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0048] Optionally, the method further comprises any of the following:

[0049] Based on the agreement, determine the third priority order;

[0050] The third priority order is determined based on radio resource control RRC signaling sent by the base station.

[0051] Optionally, the sum of the maximum group common DCI number indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one of the time units is less than or equal to the maximum number of unicast DCIs supported for detection by the terminal within one of the time units.

[0052] According to a second aspect of an embodiment of the present disclosure, a method for sending downlink control information is provided, the method being applied to a base station, comprising:

[0053] In one time unit, multiple downlink control information DCIs are sent to the terminal; wherein the multiple DCIs at least include a group common DCI for simultaneously scheduling terminal services of multiple terminals;

[0054] At least one DCI detected and received by the terminal in the time unit among the multiple DCIs is determined based on the priority order of the multiple DCIs and the maximum number of DCIs supported for detection by the terminal in one time unit.

[0055] Optionally, the maximum DCI number is a maximum unicast DCI number;

[0056] The determining, based on the priority order of the multiple DCIs and the maximum number of DCIs supported for detection by the terminal within one of the time units, at least one DCI detected and received by the terminal from among the multiple DCIs within the time unit comprises:

[0057] In response to determining that the first number of DCIs sent by the base station on the group common search space is greater than or equal to the maximum number of unicast DCIs, determining that the terminal detects and receives the DCIs of the maximum number of unicast DCIs sent by the base station on the group common search space within the time unit based on a first priority order; wherein the group common search space is a common search space used at least to transmit the group common DCI;

[0058] In response to determining that the first number is less than the maximum unicast DCI number, it is determined that the terminal detects and receives the first number of DCIs sent by the base station on the group common search space within the time unit based on a first priority order, and detects and receives the second number of DCIs sent by the base station on the terminal specific search space USS based on a second priority order; wherein the USS is a search space corresponding to the terminal for transmitting unicast DCI, and the sum of the first number and the second number is equal to the maximum unicast DCI number.

[0059] Optionally, the maximum DCI number is a maximum unicast DCI number;

[0060] The determining, based on the priority order of the multiple DCIs and the maximum number of DCIs supported for detection by the terminal within one of the time units, at least one DCI detected and received by the terminal from among the multiple DCIs within the time unit comprises:

[0061] In response to determining that a third number of DCIs sent by the base station on a terminal-specific search space USS is greater than or equal to the maximum number of unicast DCIs, determining that the terminal detects and receives the DCIs of the maximum number of unicast DCIs sent by the base station on the USS within the time unit based on a second priority order; wherein the USS is a search space corresponding to the terminal for transmitting unicast DCIs;

[0062] In response to determining that the third number is less than the maximum unicast DCI number, it is determined that the terminal detects and receives the third number of DCIs sent by the base station on the USS within the time unit based on the second priority order, and detects and receives the fourth number of DCIs sent by the base station on the group common search space based on the first priority order; wherein the group common search space is a common search space at least used to transmit the group common DCI, and the sum of the third number and the fourth number is equal to the maximum unicast DCI number.

[0063] Optionally, the first priority order is used to indicate at least one of the following:

[0064] The priority order of the group common search space identifier is from high to low or from low to high;

[0065] The priority order of the group wireless network temporary identifier values ​​from high to low or from low to high;

[0066] The priority order of terminal services;

[0067] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0068] Optionally, the second priority order is used to indicate at least one of the following:

[0069] The search space identifies the priority order from high to low or from low to high;

[0070] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0071] Optionally, the method further comprises:

[0072] Sending radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the first priority order and / or the second priority order configured by the base station.

[0073] Optionally, the group common DCI sent to the terminal on the group common search space is regarded as unicast downlink DCI.

[0074] Optionally, the maximum DCI number is a maximum group common DCI number determined based on a terminal capability of the terminal;

[0075] The determining, based on the priority order of the multiple DCIs and the maximum number of DCIs supported for detection by the terminal within one of the time units, at least one DCI detected and received by the terminal from among the multiple DCIs within the time unit comprises:

[0076] In response to determining that a fifth number of group common DCIs sent by the base station on the group common search space is greater than the maximum number of group common DCIs, determining that the terminal detects and receives the group common DCIs of the maximum number of group common DCIs sent by the base station on the group common search space within the time unit based on a third priority order; wherein the group common search space is a common search space used at least for transmitting the group common DCI;

[0077] In response to determining that the fifth number is less than or equal to the maximum group common DCI number, it is determined that the terminal detects and receives the fifth number of the group common DCIs sent by the base station on the group common search space within the time unit based on the third priority order.

[0078] Optionally, the third priority order is used to indicate at least one of the following:

[0079] The priority order of the group common search space identifier is from high to low or from low to high;

[0080] The priority order of the group wireless network temporary identifier values ​​from high to low or from low to high;

[0081] The priority order of terminal services;

[0082] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0083] Optionally, the method further comprises:

[0084] Sending radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate the third priority order configured by the base station to the terminal.

[0085] Optionally, the sum of the maximum group common DCI number indicated by the terminal capability and the number of unicast DCIs sent by the base station to the terminal within one time unit is less than or equal to the maximum number of unicast DCIs supported for detection by the terminal within one time unit.

[0086] According to a third aspect of an embodiment of the present disclosure, a downlink control information detection device is provided, and the device is applied to a terminal, including:

[0087] An execution module is configured to detect and receive corresponding DCI based on the priority order of multiple downlink control information DCIs within a time unit; wherein the multiple DCIs at least include a group common DCI for simultaneously scheduling terminal services of multiple terminals;

[0088] The control module is configured to stop DCI detection in the time unit in response to determining that the number of DCIs detected and received in the time unit reaches the maximum number of DCIs supported by the terminal for detection in one time unit.

[0089] According to a fourth aspect of an embodiment of the present disclosure, a downlink control information sending device is provided, where the device is applied to a base station and includes:

[0090] A sending module, configured to send multiple downlink control information DCIs to a terminal within a time unit; wherein the multiple DCIs at least include a group common DCI for simultaneously scheduling terminal services of multiple terminals;

[0091] The DCI determination module is configured to determine at least one DCI detected and received by the terminal from among the multiple DCIs within the time unit based on the priority order of the multiple DCIs and the maximum number of DCIs supported for detection by the terminal within the time unit.

[0092] According to a fifth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute any of the above-mentioned downlink control information detection methods.

[0093] According to a sixth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute any one of the above-mentioned methods for sending downlink control information.

[0094] According to a seventh aspect of an embodiment of the present disclosure, a downlink control information detection device is provided, including:

[0095] processor;

[0096] a memory for storing processor-executable instructions;

[0097] The processor is configured to execute any of the above-mentioned downlink control information detection methods.

[0098] According to an eighth aspect of an embodiment of the present disclosure, a device for sending downlink control information is provided, including:

[0099] processor;

[0100] a memory for storing processor-executable instructions;

[0101] The processor is configured to execute any one of the above-mentioned methods for sending downlink control information.

[0102] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0103] In an embodiment of the present disclosure, a terminal can detect and receive DCI based on the priority order of multiple DCIs within a time unit, and the base station side can also determine at least one DCI detected and received by the terminal in the multiple DCIs within the time unit based on the priority order of multiple DCIs and the maximum number of DCIs supported for detection by the terminal within a time unit. In the present disclosure, when the number of DCIs to be received by the terminal within a time unit exceeds the maximum number of DCIs supported by the terminal, both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable terminal behavior, so that the terminal and the base station have a consistent understanding of data sending and receiving, and avoid system performance degradation.

[0104] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0105] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0106] Figure 1 The figure is a schematic diagram of a downlink control information detection scenario according to an exemplary embodiment.

[0107] Figure 2 The present invention is a flowchart of a downlink control information detection method according to an exemplary embodiment.

[0108] Figure 3 The figure is a flowchart of another downlink control information detection method according to an exemplary embodiment.

[0109] Figure 4 The figure is a flowchart of another downlink control information detection method according to an exemplary embodiment.

[0110] Figure 5 The figure is a flowchart of another downlink control information detection method according to an exemplary embodiment.

[0111] Figure 6 The present invention is a flowchart of a method for sending downlink control information according to an exemplary embodiment.

[0112] Figure 7 The present invention is a flowchart of another method for sending downlink control information according to an exemplary embodiment.

[0113] Figure 8 The present invention is a flowchart of another method for sending downlink control information according to an exemplary embodiment.

[0114] Fig. 9 The present invention is a flowchart of another method for sending downlink control information according to an exemplary embodiment.

[0115] Fig.10 The present invention is a flowchart of a method for sending and detecting downlink control information according to an exemplary embodiment.

[0116] FIG. 11A to FIG. 11B The figure is a schematic diagram of a downlink control information detection scenario process according to an exemplary embodiment.

[0117] Fig.12 The present invention is a block diagram of a downlink control information detection device according to an exemplary embodiment.

[0118] Fig.13 The present invention is a block diagram of a device for sending downlink control information according to an exemplary embodiment.

[0119] Fig.14 It is a structural diagram of a downlink control information detection device according to an exemplary embodiment of the present disclosure.

[0120] Fig.15 The present invention is a schematic structural diagram of a device for sending downlink control information according to an exemplary embodiment. DETAILED DESCRIPTION

[0121] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0122] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also 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 at least one associated listed item.

[0123] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0124] In Rel-17 (Release-17), MBS (Multicast Broadcast Service) supports multiple service types, such as public safety and mission critical information, V2X (vehicle to everything) related information, IPTV (Internet Protocol TV), OTA (Over The Air), group communication, etc. The transmission period and transmission rate of different service types are different. For example, for IPTV, its data arrival is often periodic, and the data reliability requirements are general, while for public safety warning information, its data arrival is often bursty, and the reliability requirements for data transmission are extremely high. Correspondingly, the network side needs to configure different search spaces for the downlink control channels that schedule different services. These search spaces have different PDCCH candidate configurations, different monitoring periods, and may be bound to different G-RNTIs.

[0125] For a terminal, the number of DCIs that can be decoded in each time unit depends on the terminal capability. For example, for a terminal that does not support FG 3-5b capability, the corresponding time unit is limited to one slot, and one slot on the FDD (Frequency Division Duplexing) band can only support the detection of one DL (DownLink) DCI and one UL (UpLink) DCI, and one slot on the TDD (Test Driven Development) band can only support the detection of one DL DCI and two UL DCIs, or support the detection of two DL DCIs and one UL DCI.

[0126] For terminals supporting FG 3-5b capabilities, the corresponding time unit is limited to a span (range). A span is a time unit smaller than a slot and can generally be a specified number of time symbols.

[0127] Reference Figure 1 As shown, the network side needs to send the DCI corresponding to MBS service #1, MBS service #2, MBS service #3 and terminal-specific services of different periods to the terminal. The terminal will receive 4 DCIs in slot #0, 1 DCI in slot #1, 2 DCIs in slot #2, 1 DCI in slot #3, 3 DCIs in slot #4, 1 DCI in slot #5, 2 DCIs in slot #6, 1 DCI in slot #7, and so on.

[0128] Assuming that the maximum number of DCIs that the terminal supports to detect and receive is 2, the behavior of the terminal in time units such as slot#0, slot#4, and slot#8 is unpredictable, which may lead to inconsistent understanding of data transmission and reception between the network side and the terminal side, ultimately resulting in system performance degradation.

[0129] In order to solve the above technical problems, the present disclosure provides a downlink control information detection and sending method. The following first introduces the downlink control information detection method provided by the present disclosure from the terminal side.

[0130] The present disclosure provides a method for detecting downlink control information. Figure 2 As shown, Figure 2 The present invention is a flow chart of a method for detecting downlink control information according to an embodiment, which can be used in a terminal. The method may include the following steps:

[0131] In step 201, within a time unit, based on the priority order of multiple downlink control information DCIs, corresponding DCIs are detected and received. In the embodiment of the present disclosure, the multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals, and the group common DCI may be a common DCI for simultaneously scheduling MBS services of multiple terminals. For a terminal that does not support FG 3-5b capability, the size of a time unit may be a slot, and for a terminal that supports FG 3-5b capability, the size of a time unit may be a span.

[0132] In one possible implementation, the priority order of multiple DCIs may be pre-agreed by a protocol. In another possible implementation, the priority order of multiple DCIs may be configured by a base station through a high-layer signaling, wherein the high-layer signaling may be an RRC (Radio Resource Control) signaling.

[0133] In step 202, in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported for detection by the terminal within one time unit, DCI detection is stopped within the time unit.

[0134] In the above embodiment, the terminal can detect and receive DCI based on the priority order of multiple DCIs within a time unit. Once the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal for detection within a time unit, the terminal stops DCI detection in the time unit. In the present disclosure, the terminal can detect and receive DCI based on the priority order of multiple DCIs, avoiding unpredictable terminal behavior and having high availability.

[0135] In some optional embodiments, the terminal may use the group common DCI as unicast DCI, and determine the number of DCIs detected and received together with the unicast DCI. Accordingly, the maximum number of DCIs may reuse the maximum number of unicast DCIs defined in the relevant protocol. Specifically, the terminal may detect and receive DCI in any of the following ways, but not limited to:

[0136] In the first method, the terminal preferentially detects and receives the corresponding DCI in the group common search space, and when the number of DCIs detected and received in the group common search space is less than the maximum unicast DCI number, that is, does not exceed the terminal capability limit, the terminal continues to detect and receive the corresponding DCI in the terminal specific search space.

[0137] Reference Figure 3 As shown, Figure 3 The present invention is a flow chart of a method for detecting downlink control information according to an embodiment, which can be used in a terminal. The method may include the following steps:

[0138] In step 301, within one of the time units, corresponding DCI is detected and received on a group common search space based on a first priority order.

[0139] In an embodiment of the present disclosure, the group common search space is a common search space used at least to transmit the group common DCI. Both the group common DCI and the unicast DCI can be transmitted on the group common CSS (Common Search Space). The first priority order can be pre-agreed by the protocol, or can be configured by the base station side through high-layer signaling, wherein the high-layer signaling can be RRC signaling.

[0140] In step 302, in response to determining that the number of DCIs detected and received on the group common search space is less than the maximum number of unicast DCIs, corresponding DCIs are detected and received on a terminal specific search space USS based on a second priority order.

[0141] The USS is a search space corresponding to the terminal and used to transmit unicast DCI.

[0142] In the disclosed embodiment, only unicast DCI can be transmitted on USS (UE Search Space, terminal specific search space). If the number of DCI detected and received by the terminal on the group common search space does not reach the maximum number of unicast DCI, the terminal can continue to detect and receive the corresponding DCI on the USS based on the second priority order. The second priority order can be pre-agreed by the protocol, or can be configured by the base station side through high-level signaling, where the high-level signaling can be RRC signaling.

[0143] Step 302 is optional and needs to be performed when the number of DCIs detected and received in the group common search space does not reach the maximum number of unicast DCIs.

[0144] In step 303, in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported for detection by the terminal within one time unit, DCI detection is stopped within the time unit.

[0145] In the above embodiment, the terminal can preferentially detect and receive the corresponding DCI based on the first priority order on the group common search space, and when the number of DCI detected and received in the group common search space is less than the maximum number of unicast DCIs, continue to detect and receive the corresponding DCI on the USS based on the second priority order, until it is determined that the number of DCIs detected and received in the time unit reaches the maximum number of DCIs supported by the terminal in one time unit, and then stop DCI detection in the time unit. The purpose of the terminal detecting and receiving DCI based on the priority order of multiple DCIs is achieved, and the situation of unpredictable terminal behavior is avoided, and the availability is high.

[0146] Optionally, the first priority order can be used to indicate at least one of the following: a priority order of group common search space identifiers from high to low or from low to high; a priority order of group radio network temporary identifier values ​​from high to low or from low to high; a priority order of terminal services; a priority order of control resource set identifiers from high to low or from low to high. The second priority order can be used to indicate at least one of the following: a priority order of search space identifiers from high to low or from low to high; a priority order of control resource set identifiers from high to low or from low to high.

[0147] In one possible implementation, the first priority order can be used to indicate the priority order of group common searchspaceID (group common search space identifier) ​​from low to high. The terminal can detect and receive the corresponding group common DCI in the group common search space with a lower group common search space ID according to the group common search space ID. If the number of DCIs detected and received by the terminal on the group common search space is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCI on the USS based on the second priority order. Until the number of DCIs detected and received within the time unit reaches the maximum number of unicast DCIs supported by the terminal in one of the time units, the DCI detection is stopped within the time unit.

[0148] In another possible implementation, the first priority order may be used to indicate the order of the group radio network temporary identifier, including but not limited to the priority order for indicating the group radio network temporary identifier value from high to low or from low to high. The terminal may detect and receive the corresponding group common DCI in the corresponding group common search space in the order of the G-RNTI value from high to low or from low to high. If the number of DCIs detected and received by the terminal on the group common search space is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCI on the USS based on the second priority order. Until the number of DCIs detected and received within the time unit reaches the maximum number of unicast DCIs supported by the terminal for detection within one of the time units, the DCI detection is stopped within the time unit.

[0149] In another possible implementation, the first priority order may be used to indicate the priority order of the terminal service. The terminal may detect and receive the corresponding group common DCI in the corresponding group common search space according to the priority order of the terminal service. If the number of DCIs detected and received by the terminal on the group common search space is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCI on the USS based on the second priority order. Until the number of DCIs detected and received in the time unit reaches the maximum number of unicast DCIs supported by the terminal in one of the time units, the DCI detection is stopped in the time unit.

[0150] In another possible implementation, the first priority order can be used to indicate the priority order of CORESET (Control Resource set) ID (identifier) ​​from high to low or from low to high. The terminal can detect and receive the corresponding group common DCI in the corresponding group common search space according to the priority order of CORESET ID from high to low or from low to high. If the number of DCI detected and received by the terminal on the group common search space is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCI on the USS based on the second priority order. Until the number of DCIs detected and received within the time unit reaches the maximum number of unicast DCIs supported by the terminal for detection within one of the time units, DCI detection is stopped within the time unit.

[0151] The second method is to preferentially detect and receive the corresponding DCI on the USS, and when the number of DCIs detected and received on the USS is less than the maximum unicast DCI number, that is, does not exceed the terminal capability limit, continue to detect and receive the corresponding DCI on the group common search space.

[0152] Reference Figure 4 As shown, Figure 4 The present invention is a flow chart of a method for detecting downlink control information according to an embodiment, which can be used in a terminal. The method may include the following steps:

[0153] In step 401, within one time unit, corresponding DCI is detected and received on a terminal specific search space USS based on a second priority order.

[0154] In the embodiment of the present disclosure, the USS is a search space corresponding to the terminal for transmitting unicast DCI, and only unicast DCI can be transmitted on the USS. The second priority order may be pre-agreed by the protocol, or may be configured by the base station side through high-layer signaling, wherein the high-layer signaling may be RRC signaling.

[0155] In step 402, in response to determining that the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs, corresponding DCIs are detected and received on a group common search space based on a first priority order.

[0156] In an embodiment of the present disclosure, the group common search space is a common search space used at least to transmit the group common DCI. If the number of DCIs detected and received by the terminal on the USS does not reach the maximum number of unicast DCIs, the terminal may continue to detect and receive the corresponding DCI on the group common search space based on the first priority order, and the DCI received on the group common search space may be a unicast DCI or a group common DCI. The first priority order may be pre-agreed by the protocol, or may be configured by the base station side through high-layer signaling, wherein the high-layer signaling may be RRC signaling.

[0157] Step 402 is optional and needs to be performed when the number of DCIs detected and received on the USS does not reach the maximum number of unicast DCIs.

[0158] In step 403, in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported for detection by the terminal within one time unit, DCI detection is stopped within the time unit.

[0159] In the above embodiment, the terminal can preferentially detect and receive the corresponding DCI based on the second priority order on the USS, and when the number of DCI detected and received on the USS is less than the maximum number of unicast DCIs, continue to detect and receive the corresponding DCI on the group common search space based on the first priority order until it is determined that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal for detection within one time unit, and then stop DCI detection within the time unit. The purpose of the terminal detecting and receiving DCI based on the priority order of multiple DCIs is achieved, and the situation of unpredictable terminal behavior is avoided, with high availability.

[0160] Optionally, the second priority order is used to indicate at least one of the following: a priority order of search space identifiers from high to low or from low to high; a priority order of control resource set identifiers from high to low or from low to high. The first priority order is used to indicate at least one of the following: a priority order of group common search space identifiers from high to low or from low to high; a priority order of group wireless network temporary identifier values ​​from high to low or from low to high; a priority order of terminal services; a priority order of control resource set identifiers from high to low or from low to high.

[0161] In a possible implementation, the second priority order is used to indicate the priority order of the search space identifier from high to low or from low to high. The terminal can detect and receive the corresponding DCI on the corresponding USS according to the second priority order of the search space identifier from high to low or from low to high. If the number of DCIs detected and received by the terminal on the USS is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCI on the group common search space based on the first priority order. Until the number of DCIs detected and received in the time unit reaches the maximum number of unicast DCIs supported by the terminal in one of the time units, the DCI detection is stopped in the time unit.

[0162] Among them, the way in which the terminal detects and receives the corresponding DCI on the group common search space based on the first priority order is similar to the way in which the terminal detects and receives the corresponding DCI on the group common search space based on the first priority order in the above embodiment, and will not be repeated here.

[0163] In another possible implementation, the second priority order is used to indicate the priority order of the control resource set identifier from high to low or from low to high. The terminal can detect and receive the corresponding DCI on the corresponding USS according to the second priority order of the control resource set identifier from high to low or from low to high. If the number of DCIs detected and received by the terminal on the USS is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCI on the group common search space based on the first priority order. Until the number of DCIs detected and received in the time unit reaches the maximum number of unicast DCIs supported by the terminal in one of the time units, the DCI detection is stopped in the time unit.

[0164] Among them, the way in which the terminal detects and receives the corresponding DCI on the group common search space based on the first priority order is similar to the way in which the terminal detects and receives the corresponding DCI on the group common search space based on the first priority order in the above embodiment, and will not be repeated here.

[0165] In some optional embodiments, when the DCI is received and received in the first or second manner, the group common DCI detected and received by the terminal in the group common search space, that is, the group common DCI can be regarded as unicast downlink DCI. That is to say, when the terminal counts the received unicast downlink DCI, the group common DCI received by the terminal in the group common search space and the unicast downlink DCI received by the terminal can be counted together to jointly determine the number of unicast downlink DCIs that the terminal can process.

[0166] In the embodiment of the present disclosure, the unicast downlink DCI may be a DCI for scheduling a unicast PDSCH (Physical Downlink Shared Channel), and the unicast uplink DCI may be a DCI for scheduling a unicast PUSCH (Physical Uplink Shared Channel).

[0167] In the above embodiments, the terminal preferentially detects and receives the corresponding DCI on the group common search space, or the terminal preferentially detects and receives the corresponding DCI on the USS. In these two methods, the group common DCI detected and received by the terminal on the group common search space can be regarded as a unicast downlink DCI, avoiding affecting the transmission of unicast uplink DCI on the terminal side, and having high availability.

[0168] In some optional embodiments, a new terminal capability may be defined separately for the terminal, and the terminal capability is used to indicate the maximum number of group common DCIs supported by the terminal for detection within one time unit. That is, when determining the maximum number of DCIs, the maximum number of unicast DCIs is no longer reused, and a maximum number of group common DCIs is defined separately for the terminal.

[0169] Reference Figure 5 As shown, Figure 5 The present invention is a flow chart of a method for detecting downlink control information according to an embodiment, which can be used in a terminal. The method may include the following steps:

[0170] In step 501, the maximum number of DCIs is determined based on terminal capabilities.

[0171] In the disclosed embodiment, the terminal capability is used to indicate the maximum number of group common DCIs supported by the terminal for detection within one time unit. Further, the terminal capability can be defined according to different service cells. That is, the maximum number of group common DCIs supported for detection within one time unit defined for the terminal on a service cell. Among them, for a terminal that does not support FG 3-5b capability, the corresponding time unit size is a slot, and for a terminal that supports FG 3-5b capability, the corresponding time unit size is a span.

[0172] In step 502, within one of the time units, the group common DCI is detected and received on a group common search space based on a third priority order.

[0173] Wherein, the group common search space is a common search space used at least for transmitting the group common DCI. Optionally, the third priority order is used to indicate at least one of the following: the priority order of the group common search space identifier from high to low or from low to high; the priority order of the group wireless network temporary identifier value from high to low or from low to high; the priority order of the terminal service; the priority order of the control resource set identifier from high to low or from low to high. Wherein, the third priority order can be pre-agreed by the protocol, and can also be configured by high-level signaling sent by the base station, wherein the high-level signaling can be RRC signaling.

[0174] In the disclosed embodiment, the manner in which the terminal detects and receives the group common DCI on the group common search space based on the third priority order is similar to the manner in which the terminal detects and receives the corresponding DCI on the group common search space based on the first priority order in the above embodiment, and is not repeated here.

[0175] In step 503, in response to determining that the number of the group common DCIs detected and received within the time unit reaches the maximum number of group common DCIs indicated by the terminal capability, DCI detection is stopped on the group common search space within the time unit.

[0176] In the above embodiment, a new terminal capability can be defined for the terminal, and the maximum number of group common DCIs can be determined based on the terminal capability. The terminal detects and receives the group common DCI on the group common search space based on the third priority order until the number of group common DCIs detected and received reaches the maximum number of group common DCIs, and stops DCI detection on the group common search space within the time unit. The purpose of the terminal detecting and receiving DCI based on the priority order of multiple DCIs is also achieved, avoiding the situation where the terminal behavior is unpredictable, and the availability is high.

[0177] In some optional embodiments, the terminal capability in the present disclosure can be shared with the processing capability of unicast DCI. That is, the sum of the maximum number of group common DCIs indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one time unit will not exceed the maximum number of unicast DCIs supported by the terminal for detection within one time unit, that is, it will not exceed the current capability of the terminal to process unicast DCIs.

[0178] For example, if the terminal supports FG 3-1 and works in the FDD frequency band, the number of unicast DCIs that the terminal can process in one time unit, such as one slot, is 1 unicast downlink DCI and 1 unicast uplink DCI, and the maximum number of unicast DCIs is 2. Assuming that the terminal reports the terminal capability to the base station, and the terminal capability indicates that the maximum number of group common DCIs supported for detection by the terminal in one slot is N, the number of unicast DCIs that the terminal can process in one slot is 2-N.

[0179] In the above embodiment, the sum of the maximum number of group common DCIs indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one time unit is less than or equal to the maximum number of unicast DCIs. Combined with the terminal's ability to process unicast DCIs, the terminal achieves the purpose of detecting and receiving DCIs based on the priority order of multiple DCIs, thereby avoiding unpredictable terminal behavior.

[0180] Next, the method for sending downlink control information provided by the present disclosure will be introduced from the base station side.

[0181] The present disclosure provides a method for sending downlink control information. Figure 6 As shown, Figure 6 The present invention is a flow chart of a method for sending downlink control information according to an embodiment, which can be used in a base station. The method may include the following steps:

[0182] In step 601, multiple downlink control information DCIs are sent to a terminal within a time unit.

[0183] The multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals. In the embodiment of the present disclosure, the terminal service may refer to an MBS service or other services, which is not limited in the present disclosure.

[0184] In step 602, based on the priority order of the multiple DCIs and the maximum number of DCIs supported for detection by the terminal within one time unit, at least one DCI detected and received by the terminal from among the multiple DCIs within the time unit is determined.

[0185] In the embodiments of the present disclosure, the priority order may be pre-agreed upon by a protocol, or may be configured by a base station through high-layer signaling, and the high-layer signaling may be RRC signaling.

[0186] In the above embodiment, when the base station sends multiple DCIs to the terminal within a time unit, the base station can determine the DCI detected and received by the terminal based on the priority order of the multiple DCIs and the maximum number of DCIs supported by the terminal for detection within the time unit, so that both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable terminal behavior and avoiding system performance degradation.

[0187] In some optional embodiments, the terminal side uses the group common DCI as the unicast DCI, and determines the number of DCIs received by detection together with the unicast DCI. Accordingly, the maximum DCI number can reuse the maximum unicast DCI number defined in the relevant protocol.

[0188] In the first mode, the terminal preferentially detects and receives the corresponding DCI in the group common search space, and when the number of DCI detected and received in the group common search space is less than the maximum number of unicast DCI, that is, it does not exceed the terminal capability limit, the terminal continues to detect and receive the corresponding DCI in the terminal specific search space. The base station can send DCI and determine the specific DCI received by the terminal within a time unit in the following manner:

[0189] Reference Figure 7 As shown, Figure 7 The present invention is a flow chart of a method for sending downlink control information according to an embodiment, which can be used in a base station. The method may include the following steps:

[0190] In step 701, multiple downlink control information DCIs are sent to a terminal within a time unit.

[0191] The multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals.

[0192] In step 702, in response to determining that the first number of DCIs sent by the base station on the group common search space is greater than or equal to the maximum number of unicast DCIs, it is determined that the terminal detects and receives the DCIs of the maximum number of unicast DCIs sent by the base station on the group common search space within the time unit based on a first priority order.

[0193] The group common search space is a common search space at least used to transmit the group common DCI.

[0194] In an embodiment of the present disclosure, if the first number of DCIs sent by the base station on the group common search space has reached or even exceeded the terminal capability, that is, the first number is greater than or equal to the maximum number of unicast DCIs, then the base station can determine that the terminal will detect and receive the DCI with the maximum number of unicast DCIs sent by the base station on the group common search space based on the first priority order within the time unit.

[0195] Optionally, the first priority order is used to indicate at least one of the following: a priority order of group common search space identifiers from high to low or from low to high; a priority order of group radio network temporary identifier values ​​from high to low or from low to high; a priority order of terminal services; a priority order of control resource set identifiers from high to low or from low to high. The first priority order may be agreed upon by a protocol or configured by a base station through RRC signaling.

[0196] In step 703, in response to determining that the first number is less than the maximum unicast DCI number, it is determined that the terminal detects and receives the first number of DCIs sent by the base station on the group common search space based on a first priority order within the time unit, and detects and receives the second number of DCIs sent by the base station on the terminal specific search space USS based on a second priority order.

[0197] The USS is a search space corresponding to the terminal and used to transmit unicast DCI, and the sum of the first number and the second number is equal to the maximum unicast DCI number.

[0198] In an embodiment of the present disclosure, if the base station determines that the first number of DCIs sent on the group common search space does not exceed the terminal capability, that is, the first number is less than the maximum unicast DCI number, then the base station may determine that the terminal will detect and receive the first number of DCIs sent by the base station on the group common search space based on a first priority order, and detect and receive the second number of DCIs sent by the base station on the terminal specific search space USS based on a second priority order. The sum of the first number and the second number is equal to the maximum unicast DCI number.

[0199] Among them, the first priority order is used to indicate at least one of the following: the priority order of the group common search space identifier from high to low or from low to high; the priority order of the group radio network temporary identifier value from high to low or from low to high; the priority order of the terminal service; the priority order of the control resource set identifier from high to low or from low to high. The second priority order is used to indicate at least one of the following: the priority order of the search space identifier from high to low or from low to high; the priority order of the control resource set identifier from high to low or from low to high. The first priority order and / or the second priority order can be agreed upon by the protocol, or configured by the base station through RRC signaling.

[0200] In the above embodiment, the base station can determine the DCI detected and received by the terminal among the multiple DCIs based on the priority order of the multiple DCIs and the maximum number of unicast DCIs that the terminal supports detection, so that both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable terminal behavior and avoiding system performance degradation.

[0201] In the second mode, the terminal preferentially detects and receives the corresponding DCI on the USS, and when the number of DCI detected and received on the USS is less than the maximum number of unicast DCI, that is, it does not exceed the terminal capability limit, it continues to detect and receive the corresponding DCI on the group common search space. The base station can send DCI and determine the specific DCI received by the terminal within a time unit in the following manner:

[0202] Reference Figure 8 As shown, Figure 8 The present invention is a flow chart of a method for sending downlink control information according to an embodiment, which can be used in a base station. The method may include the following steps:

[0203] In step 801, multiple downlink control information DCIs are sent to a terminal within a time unit.

[0204] The multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals.

[0205] In step 802, in response to determining that the third number of DCIs sent by the base station on the terminal-specific search space USS is greater than or equal to the maximum number of unicast DCIs, it is determined that the terminal detects and receives the DCIs of the maximum number of unicast DCIs sent by the base station on the USS within the time unit based on the second priority order.

[0206] The USS is a search space corresponding to the terminal and used to transmit unicast DCI.

[0207] In an embodiment of the present disclosure, if the third number of DCIs sent by the base station on the USS has reached or even exceeded the terminal capability, that is, the third number is greater than or equal to the maximum number of unicast DCIs, then the base station can determine that the terminal will detect and receive the DCI with the maximum number of unicast DCIs sent by the base station on the USS within the time unit based on the second priority order.

[0208] Optionally, the second priority order is used to indicate at least one of the following: a priority order of search space identifiers from high to low or from low to high; a priority order of control resource set identifiers from high to low or from low to high. The second priority order can be agreed upon by the protocol or configured by the base station through RRC signaling.

[0209] In step 803, in response to determining that the third number is less than the maximum unicast DCI number, it is determined that the terminal detects and receives the third number of DCIs sent by the base station on the USS within the time unit based on the second priority order, and detects and receives the fourth number of DCIs sent by the base station on the group common search space based on the first priority order.

[0210] The group common search space is a common search space used at least for transmitting the group common DCI, and the sum of the third number and the fourth number is equal to the maximum unicast DCI number.

[0211] In an embodiment of the present disclosure, if the base station determines that the third number of DCIs sent on the USS does not exceed the terminal capability, that is, the third number is less than the maximum unicast DCI number, then the base station may determine that the terminal will detect and receive the third number of DCIs sent by the base station on the USS based on the second priority order, and detect and receive the fourth number of DCIs sent by the base station on the group common search space based on the first priority order. The sum of the third number and the fourth number is equal to the maximum unicast DCI number.

[0212] Among them, the first priority order is used to indicate at least one of the following: the priority order of the group common search space identifier from high to low or from low to high; the priority order of the group radio network temporary identifier value from high to low or from low to high; the priority order of the terminal service; the priority order of the control resource set identifier from high to low or from low to high. The second priority order is used to indicate at least one of the following: the priority order of the search space identifier from high to low or from low to high; the priority order of the control resource set identifier from high to low or from low to high. The first priority order and / or the second priority order can be agreed upon by the protocol, or configured by the base station through RRC signaling.

[0213] In the above embodiment, the base station can determine the DCI detected and received by the terminal among the multiple DCIs based on the priority order of the multiple DCIs and the maximum number of unicast DCIs that the terminal supports detection, so that both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable terminal behavior and avoiding system performance degradation.

[0214] In some optional embodiments, at least one of the first priority order and the second priority order may be configured by the base station through high-layer signaling, and the high-layer signaling may be RRC signaling.

[0215] Of course, the base station may not configure at least one of the first priority order and the second priority order, and the terminal and the base station may determine at least one of the first priority order and the second priority order based on protocol agreement respectively.

[0216] In the above embodiment, the base station can configure at least one of the first priority order and the second priority order through high-layer signaling, which is simple to implement and has high availability.

[0217] In some optional embodiments, for the first or second method mentioned above, the group common DCI sent by the base station to the terminal on the group common search space is regarded as a unicast downlink DCI, that is, both the base station and the terminal can regard the group common DCI transmitted on the group common search space as a unicast downlink DCI, so that the base station side and the terminal side have the same understanding of sending and receiving DCI, and can avoid affecting the transmission of the unicast uplink DCI.

[0218] In an embodiment of the present disclosure, the unicast downlink DCI may be a DCI for scheduling a unicast PDSCH. The unicast uplink DCI may be a DCI for scheduling a unicast PUSCH. In some optional embodiments, a new terminal capability may be defined for the terminal, and the terminal capability is used to indicate the maximum number of group-common DCIs supported for detection by the terminal within one time unit. Further, the terminal capability is used to indicate the maximum number of group-common DCIs supported for detection by the terminal within one time unit on a serving cell. The base station may send DCI and determine the specific DCI received by the terminal within one time unit in the following manner:

[0219] Reference Fig. 9 As shown, Fig. 9 The present invention is a flow chart of a method for sending downlink control information according to an embodiment, which can be used in a base station. The method may include the following steps:

[0220] In step 901, multiple downlink control information DCIs are sent to a terminal within a time unit.

[0221] The multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals.

[0222] In step 902, in response to determining that the fifth number of group common DCIs sent by the base station on the group common search space is greater than the maximum number of group common DCIs, it is determined that the terminal detects and receives the group common DCIs of the maximum number of group common DCIs sent by the base station on the group common search space within the time unit based on the third priority order.

[0223] The group common search space is a common search space used at least for transmitting the group common DCI. The third priority order is used to indicate at least one of the following: the priority order of the group common search space identifier from high to low or from low to high; the priority order of the group radio network temporary identifier value from high to low or from low to high; the priority order of the terminal service; the priority order of the control resource set identifier from high to low or from low to high. The third priority order can be configured by the base station through RRC signaling, or pre-agreed by the protocol.

[0224] In an embodiment of the present disclosure, if the fifth number of DCIs sent by the base station on the group common search space has reached or even exceeded the terminal capability, that is, the fifth number is greater than or equal to the maximum group common DCI number, then the base station can determine that the terminal will detect and receive the group common DCI with the maximum group common DCI number sent by the base station on the group common search space based on the third priority order within this time unit.

[0225] In step 903, in response to determining that the fifth number is less than or equal to the maximum group common DCI number, it is determined that the terminal detects and receives the fifth number of the group common DCIs sent by the base station on the group common search space within the time unit based on the third priority order.

[0226] In an embodiment of the present disclosure, if the fifth number of DCIs sent by the base station on the group common search space does not reach the terminal capability, that is, the fifth number is less than the maximum group common DCI number, then the base station can determine that the terminal will detect and receive the fifth number of the group common DCIs sent by the base station on the group common search space based on the third priority order within the time unit.

[0227] In the above embodiment, the base station can determine the DCI detected and received by the terminal among the multiple DCIs based on the priority order of the multiple DCIs and the maximum group common DCI number indicated by the terminal capability, so that both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable terminal behavior and avoiding system performance degradation.

[0228] In some optional embodiments, the sum of the maximum group common DCI number indicated by the terminal capability and the number of unicast DCIs sent by the base station to the terminal within one time unit may be less than or equal to the maximum number of unicast DCIs supported for detection by the terminal within one time unit.

[0229] In the above embodiment, the sum of the maximum number of group common DCIs indicated by the terminal capability and the number of unicast DCIs sent by the base station to the terminal within one time unit is less than or equal to the maximum number of unicast DCIs supported for detection by the terminal within one time unit, thereby achieving the purpose of combining the terminal's ability to process unicast DCI, so that the terminal detects and receives DCI based on the priority order of multiple DCIs, avoiding unpredictable terminal behavior.

[0230] It should also be noted that, for the base station, if it is determined that the number of multiple DCIs to be sent to the terminal within a certain time unit exceeds the terminal capability, that is, exceeds the maximum number of DCIs supported for detection by the terminal within a time unit, then the terminal can determine at least one target DCI from the multiple DCIs based on the priority order of the multiple DCIs and the maximum number of DCIs, and send the target DCI to the terminal, where the number of target DCIs is equal to the maximum number of DCIs.

[0231] In one possible implementation, when the maximum number of DCIs is the maximum number of unicast DCIs, the base station may determine the DCIs of the maximum number of unicast DCIs to be sent on the group common search space based on the first priority order when determining that the first number of DCIs to be sent on the group common search space is greater than or equal to the maximum number of unicast DCIs, and send these DCIs as target DCIs to the terminal.

[0232] If the first number is less than the maximum unicast DCI number, the base station may determine that the target DCI to be sent to the terminal includes a first number of DCIs to be sent on the group common search space and a second number of DCIs to be sent on the USS, where the USS is a search space corresponding to the terminal for transmitting unicast DCI, and the sum of the first number and the second number is equal to the maximum unicast DCI number.

[0233] In another possible implementation, when the maximum number of DCIs is the maximum number of unicast DCIs, the base station may, when determining that the third number of DCIs to be sent on the USS is greater than or equal to the maximum number of unicast DCIs, determine the DCIs of the maximum number of unicast DCIs to be sent on the USS based on the second priority order, and send these DCIs as target DCIs to the terminal.

[0234] If the third number is less than the maximum unicast DCI number, the base station may determine that the target DCI to be sent to the terminal includes the third number of DCIs to be sent on the USS and the fourth number of DCIs to be sent on the group common search space. The group common search space is a common search space used at least to transmit the group common DCI, and the sum of the third number and the fourth number is equal to the maximum unicast DCI number.

[0235] In another optional implementation, if the maximum DCI number is the maximum group common DCI number determined based on the terminal capability, the base station may determine the target DCI of the maximum group common DCI number to be sent on the group common search space based on the third priority order when it is determined that the fifth number of group common DCIs to be sent on the group common search space is greater than the maximum group common DCI number. The group common search space is a common search space used at least to transmit the group common DCI. The base station may send the target DCI of the maximum group common DCI number to the terminal.

[0236] If the fifth number is less than or equal to the maximum group common DCI number, the fifth number of group common DCIs is used as the target DCI and sent to the terminal.

[0237] Among them, the first priority order is used to indicate at least one of the following: the priority order of the group common search space identifier from high to low or from low to high; the priority order of the group wireless network temporary identifier value from high to low or from low to high; the priority order of the terminal service; the priority order of the control resource set identifier from high to low or from low to high. The second priority order is used to indicate at least one of the following: the priority order of the search space identifier from high to low or from low to high; the priority order of the control resource set identifier from high to low or from low to high. The third priority order is used to indicate at least one of the following: the priority order of the group common search space identifier from high to low or from low to high; the priority order of the group wireless network temporary identifier value from high to low or from low to high; the priority order of the terminal service; the priority order of the control resource set identifier from high to low or from low to high.

[0238] At least one of the first priority order, the second priority order, and the third priority order may be agreed upon by a protocol, or may be configured by the base station through RRC signaling.

[0239] In the above embodiment, the base station can send the target DCI among multiple DCIs to the terminal based on the priority order of multiple DCIs and the maximum number of DCIs supported for detection by the terminal within a time unit, avoiding sending invalid DCI, thereby reducing energy consumption and resource overhead.

[0240] In some optional embodiments, reference Fig.10 As shown, Fig.10 The present invention is a flow chart of a method for sending and detecting downlink control information according to an embodiment. The method may include the following steps:

[0241] In step 1001, a base station sends a plurality of downlink control information DCIs to a terminal within a time unit.

[0242] The multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals.

[0243] In step 1002, the terminal detects and receives corresponding DCI based on the priority order of the multiple DCIs.

[0244] In step 1003, in response to determining that the number of DCIs detected and received in the time unit reaches the maximum number of DCIs supported for detection by the terminal in one time unit, the terminal stops DCI detection in the time unit.

[0245] In step 1004, the base station determines at least one DCI detected and received by the terminal from among the multiple DCIs within the time unit based on the priority order of the multiple DCIs and the maximum number of DCIs supported for detection by the terminal within the time unit.

[0246] In the above embodiment, the terminal can detect and receive DCI based on the priority order of multiple DCIs within a time unit, and the base station side can also determine at least one DCI detected and received by the terminal in the multiple DCIs within the time unit based on the priority order of multiple DCIs and the maximum number of DCIs supported for detection by the terminal within a time unit. In the present disclosure, when the number of DCIs to be received by the terminal within a time unit exceeds the maximum number of DCIs supported by the terminal, both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable terminal behavior, so that the terminal and the base station have a consistent understanding of data sending and receiving, and avoid system performance degradation.

[0247] The above downlink control information detection process is further described below with examples.

[0248] Assume that the terminal is a terminal with MBS capability and supports unicast data transmission. Assume that the supported PDCCH monitoring capability is FG 3-1, which is a mandatory capability of the terminal. Its capability of monitoring PDCCH indicates that the terminal can detect at most 2 downlink unicast DCIs in one slot.

[0249] Reference Fig.11AAs shown, it is assumed that when calculating and detecting the received DCI, the terminal regards the group common DCI as the unicast DCI, and calculates the number of DCIs detected and received together with the unicast DCI. In this embodiment, it is assumed that the upper limit of the terminal's ability to detect DCI is 2 unicast DCIs.

[0250] In this embodiment, it is assumed that the base station configures N CSSs of different periods for the terminal to transmit group common DCIs for scheduling different MBS services. It is assumed that the RNTI values ​​used for scrambling the MBSDCIs transmitted in different CSSs are different. At the same time, it is assumed that the USS transmission period configured by the network side for the terminal is 1 slot. For a specific schematic diagram, refer to Fig.11A shown.

[0251] In the slot where different search spaces conflict in the time domain, the terminal needs to detect and receive DCI according to its own capabilities and a certain listening order. In the embodiment of the present disclosure, the method invented in this embodiment is described by taking the processing of DCI by the terminal in slot#0 as an example. In slot#0, there are 3 search space configurations, namely USS, CSS#1 and CSS#2. The terminal side detects and receives DCI in the following way:

[0252] The terminal first detects and receives group common DCI in CSS#1 and CSS#2, and only when the number of DCI received in all CSSs is less than 2, it continues to detect and receive DCI in USS. The terminal needs to detect multiple CSSs in this slot. When detecting and receiving DCI in the CSS, it needs to perform DCI detection and reception according to the following steps:

[0253] According to the group common search space ID, the group common DCI is preferentially detected and received in the search space with a lower search space ID. In this embodiment, the terminal first detects and receives DCI in CSS#1, and if the terminal capability is not exceeded, it continues to detect and receive DCI in CSS#2.

[0254] After the terminal completes the detection and reception of DCI in the CSS#1 and CSS#2, if the amount of DCI received at this time has not reached the terminal capability limit, the terminal continues to detect and receive DCI in the USS.

[0255] Optionally, the base station may send DCI according to relevant technologies, and determine the specific DCI received by the terminal based on the method provided by the present disclosure. Or when sending DCI, the base station may avoid sending invalid DCI, thereby avoiding energy waste and resource overhead. For another example, referring to Fig.11A As shown, when the UE detects DCI in the CSS, it determines the order of detecting and receiving DCI according to the order of RNTI value. In this embodiment, the terminal can determine the DCI detection and reception order according to the following rules:

[0256] In the order of RNTI value, the terminal first detects and receives DCI in the CSS with the larger RNTI value. For example, if the G-RNTI value configured in CSS#1 is larger and the G-RNTI value configured in CSS#2 is smaller, the terminal first detects and receives DCI in CSS#1. Then, if the number of received DCI does not exceed the terminal capability limit at this time, it continues to detect and receive DCI in CSS#2.

[0257] Alternatively, the received DCI is detected in ascending order of RNTI value.

[0258] Alternatively, the received DCI is detected in the corresponding CSS according to the RNTI arrangement order configured on the network side.

[0259] Among them, the group common DCI transmitted in the group common search space can be regarded as unicast downlink DCI by both the terminal and the base station.

[0260] Another example Fig. 11B As shown, it is assumed that a CSS can be configured with multiple G-RNTIs, that is, the terminal needs to detect and receive DCI according to multiple G-RNTIs in CSS#1. When the terminal detects DCI in CSS#1, the order of detecting and receiving DCI is determined according to the order of RNTI value. In this embodiment, the terminal can determine the DCI detection and reception order according to the following rules:

[0261] In the order of RNTI value, the terminal first detects and receives DCI in the CSS with the larger RNTI value. For example, if the RNTI value configured in CSS#1 is larger and the RNTI value configured in CSS#2 is smaller, the terminal first detects and receives DCI in CSS#1. Then, if the number of received DCI does not exceed the terminal capability limit at this time, it continues to detect and receive DCI in CSS#2.

[0262] Alternatively, the received DCI is detected in ascending order of RNTI value.

[0263] Alternatively, the received DCI is detected in the corresponding CSS according to the RNTI arrangement order configured on the network side.

[0264] If there are multiple CSSs and each CSS corresponds to multiple G-RNTIs, the terminal can first detect CSS#1 in the order of search space identifiers from low to high or from high to low, and detect and receive DCI in CSS#1 in sequence according to the order of G-RNTI from high to low.

[0265] Among them, the group common DCI transmitted in the group common search space can be regarded as unicast downlink DCI by the terminal and the base station.

[0266] For example, refer to Fig.11A As shown, the terminal detects and receives the corresponding DCI according to the priority order of the terminal service, and the first priority order can be configured by the base station through high-level signaling. The physical side of the terminal can determine the corresponding service according to parameters such as search space, RNTI, and monitoring period.

[0267] When sending DCI, the base station may consider the above method to avoid sending invalid DCI, thereby avoiding energy waste and resource overhead.

[0268] For example, refer to Fig.11A As shown, when the terminal detects and receives unicast PDCCH and groupcommon PDCCH in the same slot, DCI is detected sequentially according to the order of CORESET ID. In this embodiment, CSS transmitted in a CORESET with a lower number is detected first.

[0269] When sending DCI, the base station may consider the above method to avoid sending invalid DCI, thereby avoiding energy waste and resource overhead.

[0270] For another example, when sending DCI, the base station may send it based on a related mechanism, that is, the priority of DCI is not considered. The downlink control information detection method provided by the present disclosure is only implemented on the terminal side.

[0271] For another example, when the terminal detects the received DCI, it first detects the USS. If there are multiple USSs or the number of DCIs that need to be detected and received in the USS exceeds the maximum capability supported by the terminal, the received DCI is first detected in the USS in the following order:

[0272] Detect and receive the DCI according to the search space number

[0273] Alternatively, in the order of CORESET IDs, the DCI is preferentially detected and received in the CORESET with the lower CORESET ID.

[0274] After completing the detection of USS, if the number of DCIs received does not exceed the terminal capability, continue to detect the received DCI in CSS and detect according to the following order and rules until the number of DCIs received reaches the limit of the terminal capability:

[0275] According to the group common search space ID, the group common DCI is detected and received in the search space with the lower search space ID first.

[0276] Alternatively, the group common DCI is detected and received in the order of RNTI.

[0277] Alternatively, the group common DCI is detected and received in the order of the services.

[0278] Alternatively, in the order of CORESET IDs, the group common DCI is preferentially detected and received within the CORESET with a lower CORESET ID.

[0279] Among them, the group common DCI transmitted in the group common search space can be regarded as unicast downlink DCI by the terminal and the base station.

[0280] For another example, in this embodiment, a new capability is defined for the terminal, which defines the maximum number of MBSDCIs that the terminal supports within a time unit on a serving cell. This capability is independent of the currently defined terminal capability and is an additional capability supported by the terminal on the basis of the current capability. The time unit is a slot or a span, and this embodiment does not impose any restrictions.

[0281] Based on the capability, the terminal detects and receives the group common DCI in the following order:

[0282] According to the group common search space ID, the group common DCI is detected and received in the search space with the lower search space ID first.

[0283] Alternatively, the group common DCI is detected and received in the order of RNTI.

[0284] Alternatively, the group common DCI is detected and received in the order of the services.

[0285] Alternatively, in the order of CORESET IDs, the group common DCI is preferentially detected and received within the CORESET with a lower CORESET ID.

[0286] The sum of the maximum group common DCI number indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one time unit will not exceed the maximum number of unicast DCIs supported for detection by the terminal within one time unit.

[0287] Corresponding to the aforementioned application function implementation method embodiment, the present disclosure also provides an application function implementation device embodiment.

[0288] Reference Fig.12 , Fig.12 This is a block diagram of a downlink control information detection device according to an exemplary embodiment, wherein the device is used in a terminal and includes:

[0289] The execution module 1201 is configured to detect and receive corresponding DCI based on the priority order of multiple downlink control information DCIs within a time unit; wherein the multiple DCIs at least include a group common DCI for simultaneously scheduling terminal services of multiple terminals;

[0290] The control module 1202 is configured to stop DCI detection in the time unit in response to determining that the number of DCIs detected and received in the time unit reaches the maximum number of DCIs supported by the terminal for detection in one of the time units.

[0291] In some optional embodiments, the maximum DCI number is a maximum unicast DCI number;

[0292] The execution module includes:

[0293] A first execution submodule is configured to detect and receive corresponding DCI on a group common search space based on a first priority order within one of the time units; wherein the group common search space is a common search space at least used to transmit the group common DCI;

[0294] The second execution submodule is configured to detect and receive corresponding DCI on the terminal-specific search space USS based on a second priority order in response to determining that the number of DCI detected and received on the group common search space is less than the maximum number of unicast DCIs; wherein the USS is a search space corresponding to the terminal for transmitting unicast DCI.

[0295] In some optional embodiments, the maximum DCI number is a maximum unicast DCI number;

[0296] The execution module includes:

[0297] A third execution submodule is configured to detect and receive corresponding DCI on a terminal-specific search space USS based on a second priority order within one of the time units; wherein the USS is a search space corresponding to the terminal for transmitting unicast DCI;

[0298] The fourth execution submodule is configured to detect and receive corresponding DCI on a group common search space based on a first priority order in response to determining that the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs; wherein the group common search space is a common search space at least used to transmit the group common DCI.

[0299] In some optional embodiments, the first priority order is used to indicate at least one of the following:

[0300] The priority order of the group common search space identifier is from high to low or from low to high;

[0301] The priority order of the group wireless network temporary identifier values ​​from high to low or from low to high;

[0302] The priority order of terminal services;

[0303] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0304] In some optional embodiments, the second priority order is used to indicate at least one of the following:

[0305] The search space identifies the priority order from high to low or from low to high;

[0306] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0307] In some optional embodiments, the device further includes any of the following:

[0308] A first determination module is configured to determine the first priority order based on a protocol agreement;

[0309] The second determination module is configured to determine the first priority order based on the radio resource control RRC signaling sent by the base station.

[0310] In some optional embodiments, the device further includes any of the following:

[0311] A third determination module is configured to determine the second priority order based on a protocol agreement;

[0312] The fourth determination module is configured to determine the second priority order based on the radio resource control RRC signaling sent by the base station.

[0313] In some optional embodiments, the group-common DCI detected and received in the group-common search space is regarded as unicast downlink DCI.

[0314] In some optional embodiments, the device further comprises:

[0315] The fifth determination module is configured to determine the maximum number of DCIs based on terminal capabilities; wherein the terminal capabilities are used to indicate the maximum number of group common DCIs supported for detection by the terminal within one time unit.

[0316] In some optional embodiments, the terminal capability is used to indicate the maximum number of group common DCIs supported for detection by the terminal within one time unit on a serving cell.

[0317] In some optional embodiments, the execution module includes:

[0318] A fifth execution submodule is configured to detect and receive the group common DCI on a group common search space based on a third priority order within one of the time units; wherein the group common search space is a common search space at least used to transmit the group common DCI;

[0319] The control module comprises:

[0320] The control submodule is configured to stop DCI detection on the group common search space within the time unit in response to determining that the number of the group common DCIs detected and received within the time unit reaches the maximum group common DCI number indicated by the terminal capability.

[0321] In some optional embodiments, the third priority order is used to indicate at least one of the following:

[0322] The priority order of the group common search space identifier is from high to low or from low to high;

[0323] The priority order of the group wireless network temporary identifier values ​​from high to low or from low to high;

[0324] The priority order of terminal services;

[0325] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0326] In some optional embodiments, the device further includes any of the following:

[0327] A sixth determination module, configured to determine the third priority order based on a protocol agreement;

[0328] The seventh determination module is configured to determine the third priority order based on the radio resource control RRC signaling sent by the base station.

[0329] In some optional embodiments, the sum of the maximum group common DCI number indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one of the time units is less than or equal to the maximum number of unicast DCIs supported for detection by the terminal within one of the time units.

[0330] Reference Fig.13 , Fig.13 This is a block diagram of a device for sending downlink control information according to an exemplary embodiment. The device is used in a base station and includes:

[0331] The sending module 1301 is configured to send multiple downlink control information DCIs to the terminal within a time unit; wherein the multiple DCIs at least include a group common DCI for simultaneously scheduling terminal services of multiple terminals;

[0332] The DCI determination module 1302 is configured to determine at least one DCI detected and received by the terminal from among the multiple DCIs within the time unit based on the priority order of the multiple DCIs and the maximum number of DCIs supported for detection by the terminal within the time unit.

[0333] In some optional embodiments, the maximum DCI number is a maximum unicast DCI number;

[0334] The DCI determination module includes:

[0335] A first DCI determination submodule is configured to determine, in response to determining that a first number of DCIs sent by the base station on a group common search space is greater than or equal to the maximum number of unicast DCIs, that the terminal detects and receives the DCIs of the maximum number of unicast DCIs sent by the base station on the group common search space within the time unit based on a first priority order; wherein the group common search space is a common search space at least used to transmit the group common DCI;

[0336] The second DCI determination submodule is configured to determine, in response to determining that the first number is less than the maximum unicast DCI number, that the terminal detects and receives the first number of DCIs sent by the base station on the group common search space based on a first priority order within the time unit, and detects and receives the second number of DCIs sent by the base station on the terminal specific search space USS based on a second priority order; wherein the USS is a search space corresponding to the terminal for transmitting unicast DCI, and the sum of the first number and the second number is equal to the maximum unicast DCI number.

[0337] In some optional embodiments, the maximum DCI number is a maximum unicast DCI number;

[0338] The first DCI determination module includes:

[0339] a third DCI determination submodule, configured to determine, in response to determining that a third number of DCIs sent by the base station on a terminal-specific search space USS is greater than or equal to the maximum number of unicast DCIs, that the terminal detects and receives the DCIs of the maximum number of unicast DCIs sent by the base station on the USS within the time unit based on a second priority order; wherein the USS is a search space corresponding to the terminal for transmitting unicast DCIs;

[0340] The fourth DCI determination submodule is configured to determine, in response to determining that the third number is less than the maximum unicast DCI number, that the terminal detects and receives the third number of DCIs sent by the base station on the USS within the time unit based on the second priority order, and detects and receives the fourth number of DCIs sent by the base station on the group common search space based on the first priority order; wherein the group common search space is a common search space used at least to transmit the group common DCI, and the sum of the third number and the fourth number is equal to the maximum unicast DCI number.

[0341] In some optional embodiments, the first priority order is used to indicate at least one of the following:

[0342] The priority order of the group common search space identifier is from high to low or from low to high;

[0343] The priority order of the group wireless network temporary identifier values ​​from high to low or from low to high;

[0344] The priority order of terminal services;

[0345] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0346] In some optional embodiments, the second priority order is used to indicate at least one of the following:

[0347] The search space identifies the priority order from high to low or from low to high;

[0348] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0349] In some optional embodiments, the device further comprises:

[0350] The first sending module is configured to send radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the first priority order and / or the second priority order configured by the base station.

[0351] In some optional embodiments, the group-common DCI sent to the terminal on the group-common search space is regarded as a unicast downlink DCI.

[0352] In some optional embodiments, the maximum DCI number is a maximum group common DCI number determined based on a terminal capability of the terminal;

[0353] The DCI determination module includes:

[0354] a fifth DCI determination submodule, configured to determine, in response to determining that a fifth number of group common DCIs sent by the base station on the group common search space is greater than the maximum number of group common DCIs, that the terminal detects and receives the group common DCIs of the maximum number of group common DCIs sent by the base station on the group common search space within the time unit based on a third priority order; wherein the group common search space is a common search space at least used to transmit the group common DCI;

[0355] The sixth DCI determination submodule is configured to determine, in response to determining that the fifth number is less than or equal to the maximum group common DCI number, that the terminal detects and receives the fifth number of the group common DCIs sent by the base station on the group common search space based on the third priority order within the time unit.

[0356] In some optional embodiments, the third priority order is used to indicate at least one of the following:

[0357] The priority order of the group common search space identifier is from high to low or from low to high;

[0358] The priority order of the group wireless network temporary identifier values ​​from high to low or from low to high;

[0359] The priority order of terminal services;

[0360] Controls the priority order of resource collection identifiers from high to low or from low to high.

[0361] In some optional embodiments, the device further comprises:

[0362] The second sending module is configured to send radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate the third priority order configured by the base station to the terminal.

[0363] In some optional embodiments, the sum of the maximum group common DCI number indicated by the terminal capability and the number of unicast DCIs sent by the base station to the terminal within one time unit is less than or equal to the maximum number of unicast DCIs supported for detection by the terminal within one time unit.

[0364] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can refer to the partial description of the method embodiments. The device embodiments described above are only schematic, wherein the units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the disclosed solution. A person of ordinary skill in the art may understand and implement it without creative work.

[0365] Correspondingly, the present disclosure further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to execute any of the above-mentioned downlink control information detection methods.

[0366] Correspondingly, the present disclosure further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to execute any of the above-mentioned methods for sending downlink control information.

[0367] Accordingly, the present disclosure also provides a downlink control information detection device, comprising:

[0368] processor;

[0369] a memory for storing processor-executable instructions;

[0370] The processor is configured to execute any of the above-mentioned downlink control information detection methods.

[0371] Fig.141 is a block diagram of an electronic device 1400 according to an exemplary embodiment. For example, the electronic device 1400 may be a mobile phone, a tablet computer, an e-book reader, a multimedia player, a wearable device, a vehicle-mounted terminal, an iPad, a smart TV, or other terminals.

[0372] Reference Fig.14 , the electronic device 1400 may include one or more of the following components: a processing component 1402 , a memory 1404 , a power component 1406 , a multimedia component 1408 , an audio component 1410 , an input / output (I / O) interface 1412 , a sensor component 1416 , and a communication component 1418 .

[0373] The processing component 1402 generally controls the overall operation of the electronic device 1400, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1402 may include one or more processors 1420 to execute instructions to complete all or part of the steps of the above-mentioned downlink control information detection method. In addition, the processing component 1402 may include one or more modules to facilitate the interaction between the processing component 1402 and other components. For example, the processing component 1402 may include a multimedia module to facilitate the interaction between the multimedia component 1408 and the processing component 1402. For another example, the processing component 1402 can read executable instructions from the memory to implement the steps of a downlink control information detection method provided in the above-mentioned embodiments.

[0374] The memory 1404 is configured to store various types of data to support operations on the electronic device 1400. Examples of such data include instructions for any application or method operating on the electronic device 1400, contact data, phone book data, messages, pictures, videos, etc. The memory 1404 can be implemented by any type of volatile or non-volatile storage device 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 memory, flash memory, magnetic disk or optical disk.

[0375] The power supply component 1406 provides power to the various components of the electronic device 1400. The power supply component 1406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 1400.

[0376] The multimedia component 1408 includes a display screen that provides an output interface between the electronic device 1400 and the user. In some embodiments, the multimedia component 1408 includes a front camera and / or a rear camera. When the electronic device 1400 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0377] The audio component 1410 is configured to output and / or input audio signals. For example, the audio component 1410 includes a microphone (MIC), and when the electronic device 1400 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1404 or sent via the communication component 1418. In some embodiments, the audio component 1410 also includes a speaker for outputting audio signals.

[0378] I / O interface 1412 provides an interface between processing component 1402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0379] The sensor assembly 1416 includes one or more sensors for providing various aspects of status assessment for the electronic device 1400. For example, the sensor assembly 1416 can detect the open / closed state of the electronic device 1400, the relative positioning of components, such as the display and keypad of the electronic device 1400, and the sensor assembly 1416 can also detect the position change of the electronic device 1400 or a component of the electronic device 1400, the presence or absence of user contact with the electronic device 1400, the orientation or acceleration / deceleration of the electronic device 1400, and the temperature change of the electronic device 1400. The sensor assembly 1416 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1416 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1416 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0380] The communication component 1418 is configured to facilitate wired or wireless communication between the electronic device 1400 and other devices. The electronic device 1400 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof. In an exemplary embodiment, the communication component 1418 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 1418 also includes a near field communication (NFC) module to facilitate short-range 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 technologies.

[0381] In an exemplary embodiment, the electronic device 1400 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, microcontrollers, microprocessors or other electronic components to execute the above-mentioned downlink control information detection method.

[0382] In an exemplary embodiment, a non-transitory machine-readable storage medium including instructions is also provided, such as a memory 1404 including instructions, and the instructions can be executed by a processor 1420 of an electronic device 1400 to complete the above-mentioned 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 disk, an optical data storage device, etc.

[0383] Accordingly, the present disclosure further provides a downlink control information sending device, comprising:

[0384] processor;

[0385] a memory for storing processor-executable instructions;

[0386] The processor is configured to execute any of the above-mentioned methods for sending downlink control information.

[0387] like Fig.15 As shown, Fig.15 FIG. 1 is a schematic diagram of a structure of a downlink control information sending device 1500 according to an exemplary embodiment. The device 1500 may be provided as a base station. Fig.15 The device 1500 includes a processing component 1522, a wireless transmission / reception component 1524, an antenna component 1526, and a signal processing part specific to the wireless interface. The processing component 1522 may further include at least one processor.

[0388] One of the processors in the processing component 1522 may be configured to execute any of the above-mentioned methods for sending downlink control information.

[0389] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0390] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for detecting downlink control information, characterized in that: The method is executed by a terminal, and includes: In a time unit, detecting and receiving downlink control information DCI on a group common search space and a terminal specific search space USS based on a priority order; based on a factor of a maximum number of DCIs supported by the terminal for detection in the time unit, stopping detecting DCI on the group common search space and the USS; wherein the number of DCIs received by the terminal in the time unit is less than or equal to the maximum number of DCIs supported by the terminal for detection in the time unit; The group common search space is a common search space at least used to transmit group common DCI; the group common DCI is a group common DCI used to simultaneously schedule terminal services of multiple terminals; and the USS is a search space corresponding to the terminal for transmitting unicast DCI.

2. The method according to claim 1, characterized in that: The priority order includes a first priority order and / or a second priority order; wherein the first priority order is used to indicate the priority order of the group common search space identifier from high to low or from low to high; and the second priority order is used to indicate the priority order of the USS identifier from high to low or from low to high.

3. The method according to claim 2, characterized in that The detecting DCI on a group common search space and a terminal specific search space USS based on a priority order within a time unit; and stopping detecting DCI on the group common search space and the USS based on a factor of a maximum number of DCIs supported for detection by the terminal within the time unit, including at least one of the following: within the time unit, detecting the corresponding DCI on the group common search space based on the first priority order; if the number of corresponding DCIs detected on the group common search space based on the first priority order is less than the maximum number of DCIs supported for detection by the terminal, detecting the corresponding DCI on the USS based on the second priority order; Stop detecting DCI on the USS based on a factor of a maximum number of DCIs supported by the terminal for detection within the time unit; within the time unit, detecting corresponding DCI on the group common search space based on the first priority order; Stop detecting DCI in the group common search space based on a factor of a maximum number of DCIs supported for detection by the terminal within the time unit; within the time unit, detecting corresponding DCI on the USS based on the second priority order; In a case where the number of corresponding DCIs detected on the USS based on the second priority order is less than the maximum number of DCIs supported for detection by the terminal, detecting the corresponding DCI on the group common search space based on the first priority order; Stop detecting DCI in the group common search space based on a factor of a maximum number of DCIs supported for detection by the terminal within the time unit; within the time unit, detecting corresponding DCI on the USS based on the second priority order; Based on a factor of a maximum number of DCIs supported for detection by the terminal within the time unit, stop detecting DCI on the USS.

4. The method according to claim 2 or 3, characterized in that: The method further comprises any of the following: Based on the agreement, determine the first priority order; The first priority order is determined based on radio resource control RRC signaling sent by the base station.

5. The method according to claim 2 or 3, characterized in that: The method further comprises any of the following: Determine the second priority order based on the agreement; The second priority order is determined based on radio resource control RRC signaling sent by the base station.

6. The method according to any one of claims 1 to 5, characterized in that: The group common DCI detected in the group common search space is regarded as unicast downlink DCI.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: The maximum number of DCIs is determined based on the terminal capability, wherein the terminal capability is used to indicate the maximum number of group common DCIs supported for detection by the terminal within one time unit.

8. The method according to claim 7, characterized in that The terminal capability is used to indicate the maximum number of group common DCIs supported for detection by the terminal within one time unit on a serving cell.

9. The method according to claim 7 or 8, characterized in that: The sum of the maximum group common DCI number indicated by the terminal capability and the number of unicast DCIs detected by the terminal within one time unit is less than or equal to the maximum number of unicast DCIs supported for detection by the terminal within one time unit.

10. A method for sending downlink control information, characterized in that: The method is performed by a base station and includes: In one time unit, multiple downlink control information DCIs are sent to the terminal; wherein the multiple DCIs include at least a group common DCI; the group common DCI is a group common DCI used to schedule terminal services of multiple terminals at the same time; In a time unit, determining that the terminal detects DCI on a group common search space and a terminal specific search space USS based on a priority order; determining that the terminal stops continuing to detect DCI on the group common search space and the USS based on a factor of a maximum number of DCIs supported for detection by the terminal in the time unit; wherein the number of DCIs received by the terminal in the time unit is less than or equal to the maximum number of DCIs supported for detection by the terminal in the time unit; The group common search space is a common search space used at least for transmitting the group common DCI; and the USS is a search space corresponding to the terminal and used for transmitting unicast DCI.

11. The method according to claim 10, characterized in that The priority order includes a first priority order and / or a second priority order; wherein the first priority order is used to indicate the priority order of the group common search space identifier from high to low or from low to high; and the second priority order is used to indicate the priority order of the USS identifier from high to low or from low to high.

12. The method according to claim 11, characterized in that The step of determining that the terminal detects DCI on a group common search space and a terminal specific search space USS based on a priority order within a time unit; and determining that the terminal stops detecting DCI on the group common search space and the USS based on a factor of a maximum number of DCIs supported for detection by the terminal within the time unit, includes at least one of the following: Within the time unit, determine that the terminal detects the corresponding DCI on the group common search space based on the first priority order; if the number of corresponding DCIs detected on the group common search space based on the first priority order is less than the maximum number of DCIs supported for detection by the terminal, determine that the terminal detects the corresponding DCI on the USS based on the second priority order; Determining, based on a factor of a maximum number of DCIs supported by the terminal for detection within the time unit, that the terminal stops detecting DCI on the USS; Determine, within the time unit, that the terminal detects corresponding DCI on the group common search space based on the first priority order; Determining, based on a factor of a maximum number of DCIs supported by the terminal for detection within the time unit, that the terminal stops detecting DCI on the group common search space; Determine, within the time unit, that the terminal detects the corresponding DCI on the USS based on the second priority order; In a case where the number of corresponding DCIs detected on the USS based on the second priority order is less than the maximum number of DCIs supported for detection by the terminal, determining that the terminal detects the corresponding DCI on the group common search space based on the first priority order; Determining, based on a factor of a maximum number of DCIs supported by the terminal for detection within the time unit, that the terminal stops detecting DCI on the group common search space; Determine, within the time unit, that the terminal detects the corresponding DCI on the USS based on the second priority order; Based on a factor of a maximum number of DCIs supported for detection by the terminal within the time unit, it is determined that the terminal stops detecting DCI on the USS.

13. The method according to claim 11 or 12, characterized in that: The method further comprises: Sending radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the first priority order and / or the second priority order configured by the base station.

14. The method according to claim 11 or 12, characterized in that: The method further comprises: Based on a protocol agreement, the first priority order and / or the second priority order is determined.

15. The method according to any one of claims 10 to 14, characterized in that: The group common DCI sent to the terminal on the group common search space is regarded as unicast downlink DCI.

16. The method according to any one of claims 10 to 15, characterized in that: The maximum DCI number is a maximum group common DCI number determined based on the terminal capability of the terminal.

17. The method according to claim 16, characterized in that The terminal capability is used to indicate the maximum number of group common DCIs supported for detection by the terminal within one time unit on a serving cell.

18. The method according to claim 16 or 17, characterized in that The sum of the maximum group common DCI number indicated by the terminal capability and the number of unicast DCIs sent by the base station to the terminal within one time unit is less than or equal to the maximum number of unicast DCIs supported by the terminal for detection within one time unit.

19. A downlink control information detection device, characterized in that: The device is applied to a terminal, and includes: A processing module is configured to detect downlink control information DCI on a group common search space and a terminal specific search space USS based on a priority order within a time unit; based on a factor of a maximum number of DCIs supported by the terminal for detection within the time unit, stop continuing to detect DCI on the group common search space and the USS; wherein the number of DCIs received by the terminal within the time unit is less than or equal to the maximum number of DCIs supported by the terminal for detection within the time unit; The group common search space is a common search space at least used to transmit group common DCI; the group common DCI is a group common DCI used to simultaneously schedule terminal services of multiple terminals; and the USS is a search space corresponding to the terminal for transmitting unicast DCI.

20. A downlink control information sending device, characterized in that: The device is applied to a base station, and includes: A sending module, configured to send multiple downlink control information DCIs to a terminal within a time unit; wherein the multiple DCIs include at least a group common DCI; the group common DCI is a group common DCI for simultaneously scheduling terminal services of multiple terminals; A processing module is configured to determine, within a time unit, based on a priority order, that the terminal detects DCI on a group common search space and a terminal specific search space USS; based on a factor of a maximum number of DCIs supported by the terminal for detection within the time unit, determine that the terminal stops continuing to detect DCI on the group common search space and the USS; wherein the number of DCIs received by the terminal within the time unit is less than or equal to the maximum number of DCIs supported by the terminal for detection within the time unit; The group common search space is a common search space used at least for transmitting the group common DCI; and the USS is a search space corresponding to the terminal and used for transmitting unicast DCI.

21. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the downlink control information detection method described in any one of claims 1-9 or 10-18 above.

22. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the downlink control information sending method described in any one of claims 1-9 or 10-18 above.

23. A downlink control information detection device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the downlink control information detection method as described in any one of claims 1 to 9.

24. A downlink control information sending device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the method for sending downlink control information as described in any one of claims 10-18.

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