Downlink control information detection, transmission method and device, and storage medium

Abstract

This disclosure provides a downlink control information detection and transmission method, apparatus, and storage medium. The downlink control information detection method includes: within a time unit, detecting and receiving corresponding DCIs based on the priority order of multiple DCIs; wherein the multiple DCIs include at least a group common DCI used for simultaneously scheduling terminal services of multiple terminals; and stopping DCI detection within the time unit in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal within the time unit. In this 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 DCIs detected and received by the terminal, avoiding unpredictable terminal behavior and ensuring consistent understanding of data transmission and reception between the terminal and the base station, thus preventing system performance degradation.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application No. 202280000068.2, filed on January 11, 2022, entitled "Downlink Control Information Detection, Transmission Method and Apparatus, Storage Medium".

[0003] Claim for priority

[0004] This disclosure claims priority to PCT application No. PCT / CN2021 / 135145, with an international filing date of December 2, 2021. Technical Field

[0005] This disclosure relates to the field of communications, and in particular to methods and apparatus for detecting and transmitting downlink control information, and storage media. Background Technology

[0006] Currently, different service types have different characteristics, such as arrival time, latency, and transmission rate. The network side needs to schedule the data transmission of the corresponding service type through multiple DCIs (Downlink Control Information). When the network side needs to transmit multiple service types, it may be necessary to transmit multiple DCIs within the same time unit.

[0007] Because the terminal needs to detect and receive multiple DCIs in the search space, or the terminal needs to detect and receive multiple DCIs scrambled by different G-RNTIs (Group-Radio Network Temporary Identity) in one search space, the final number of DCIs to be detected may exceed the maximum number of DCIs that the terminal can support.

[0008] When the number of DCIs transmitted by the network side in the same time unit exceeds the maximum number of DCIs that the terminal can support for detection, the terminal's behavior becomes unpredictable, which may lead to inconsistencies in the understanding of data transmission and reception between the network side and the terminal side. Ultimately, this results in a degraded system performance. Summary of the Invention

[0009] To overcome the problems existing in related technologies, embodiments of this disclosure provide a downlink control information detection and transmission method and apparatus, and a storage medium.

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

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

[0012] In response to determining that the number of DCIs detected and received within the time unit has reached the maximum number of DCIs that the terminal can support detecting within the time unit, DCI detection is stopped within the time unit.

[0013] Optionally, the maximum number of DCIs is the maximum number of unicast DCIs;

[0014] Within a time unit, detecting and receiving the corresponding DCI based on the priority order of multiple downlink control information (DCI) includes:

[0015] Within one time unit, the corresponding DCI is detected and received in the group common search space based on a first priority order; wherein, the group common search space is a common search space used at least for transmitting the group common DCI;

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

[0017] Optionally, the maximum number of DCIs is the maximum number of unicast DCIs;

[0018] Within a time unit, detecting and receiving the corresponding DCI based on the priority order of multiple downlink control information (DCI) includes:

[0019] Within one time unit, the corresponding DCI is detected and received in the terminal-specific search space USS based on a second priority order; wherein, the USS is the search space corresponding to the terminal for transmitting unicast DCI;

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

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

[0022] The group public search space is identified by priority order from high to low or from low to high.

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

[0024] Priority order of terminal services;

[0025] The control resource set identifiers are ordered from high to low or low to high priority.

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

[0027] Search space identifiers are ranked in order of priority from high to low or from low to high.

[0028] The control resource set identifiers are ordered from high to low or low to high priority.

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

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

[0031] The first priority order is determined based on the Radio Resource Control (RRC) signaling sent by the base station.

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

[0033] Based on the agreement, the second priority order is determined;

[0034] The second priority order is determined based on the Radio Resource Control (RRC) signaling sent by the base station.

[0035] Optionally, group common DCIs detected and received in the group common search space are regarded as unicast downlink DCIs.

[0036] Optionally, the method further includes:

[0037] The maximum number of DCIs is determined based on the terminal capabilities; wherein the terminal capabilities are used to indicate the maximum number of group common DCIs that the terminal can support detection within one time unit.

[0038] Optionally, the terminal capability is used to indicate the maximum number of group common DCIs that the terminal supports detecting within a time unit on a serving cell.

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

[0040] Within one time unit, the group common DCI is detected and received in the 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] The response to determining that the number of DCIs detected and received within the time unit has reached the maximum number of DCIs that the terminal can support detecting within one time unit, and stopping DCI detection within the time unit, includes:

[0042] In response to determining that the number of the group common DCIs detected and received within the time unit has reached the maximum number of group common DCIs indicated by the terminal capability, DCI detection is stopped in 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 group public search space is identified by priority order from high to low or from low to high.

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

[0046] Priority order of terminal services;

[0047] The control resource set identifiers are ordered from high to low or low to high priority.

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

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

[0050] The third priority order is determined based on the Radio Resource Control (RRC) signaling sent by the base station.

[0051] Optionally, 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 that the terminal supports detecting within one time unit.

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

[0053] Within a time unit, multiple downlink control information (DCI) messages are sent to the terminal; wherein, the multiple DCI messages include at least a group common DCI message for simultaneously scheduling terminal services of multiple terminals.

[0054] Based on the priority order of the plurality of DCIs and the maximum number of DCIs that the terminal can detect within a time unit, at least one DCI detected and received by the terminal among the plurality of DCIs within the time unit is determined.

[0055] Optionally, the maximum number of DCIs is the maximum number of unicast DCIs;

[0056] The step of determining at least one DCI detected and received by the terminal from among the multiple DCIs within a time unit, based on the priority order of the multiple DCIs and the maximum number of DCIs that the terminal can support detecting within a time unit, includes:

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

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

[0059] Optionally, the maximum number of DCIs is the maximum number of unicast DCIs;

[0060] The step of determining at least one DCI detected and received by the terminal from among the multiple DCIs within a time unit, based on the priority order of the multiple DCIs and the maximum number of DCIs that the terminal can support detecting within a time unit, includes:

[0061] In response to determining that the third number of DCIs transmitted 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 maximum number of DCIs transmitted by the base station on the USS based on a second priority order within the time unit; wherein, the USS is the search space corresponding to the terminal for transmitting unicast DCIs.

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

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

[0064] The group public search space is identified by priority order from high to low or from low to high.

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

[0066] Priority order of terminal services;

[0067] The control resource set identifiers are ordered from high to low or low to high priority.

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

[0069] Search space identifiers are ranked in order of priority from high to low or from low to high.

[0070] The control resource set identifiers are ordered from high to low or low to high priority.

[0071] Optionally, the method further includes:

[0072] 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.

[0073] Optionally, group public DCIs sent to the terminal in the group public search space are regarded as unicast downlink DCIs.

[0074] Optionally, the maximum number of DCIs is the maximum number of group common DCIs determined based on the terminal capabilities of the terminal;

[0075] The step of determining at least one DCI detected and received by the terminal from among the multiple DCIs within a time unit, based on the priority order of the multiple DCIs and the maximum number of DCIs that the terminal can support detecting within a time unit, includes:

[0076] In response to determining that the fifth number of group common DCIs transmitted by the base station in the group common search space is greater than the maximum number of group common DCIs, the terminal determines that within the time unit, the terminal detects and receives the group common DCIs of the maximum number of group common DCIs transmitted by the base station in the 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 DCIs.

[0077] In response to determining that the fifth number is less than or equal to the maximum number of group common DCIs, it is determined that the terminal detects and receives the fifth number of group common DCIs sent by the base station in 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 group public search space is identified by priority order from high to low or from low to high.

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

[0081] Priority order of terminal services;

[0082] The control resource set identifiers are ordered from high to low or low to high priority.

[0083] Optionally, the method further includes:

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

[0085] Optionally, the sum of the maximum number of group common DCIs indicated by the terminal capability and the number of unicast DCIs sent to the terminal by the base station in one time unit is less than or equal to the maximum number of unicast DCIs that the terminal can detect in one time unit.

[0086] According to a third aspect of the present disclosure, a downlink control information detection device is provided, the device being applied to a terminal, comprising:

[0087] The execution module is configured to detect and receive corresponding DCIs based on the priority order of multiple downlink control information DCIs within a time unit; wherein, the multiple DCIs include at least 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 has reached the maximum number of DCIs that the terminal can support detecting in the time unit.

[0089] According to a fourth aspect of the present disclosure, a downlink control information transmitting apparatus is provided, the apparatus being applied to a base station, comprising:

[0090] The sending module is configured to send multiple downlink control information (DCI) messages to the terminal within a time unit; wherein, the multiple DCI messages include at least a group common DCI message 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 among the plurality of DCIs within the time unit, based on the priority order of the plurality of DCIs and the maximum number of DCIs that the terminal can support detecting within the time unit.

[0092] According to a fifth aspect of the present disclosure, a computer-readable storage medium is provided, the storage medium storing a computer program for performing the downlink control information detection method described in any of the preceding claims.

[0093] According to a sixth aspect of the present disclosure, a computer-readable storage medium is provided, the storage medium storing a computer program for performing the downlink control information transmission method described in any of the preceding claims.

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

[0095] processor;

[0096] Memory used to store processor-executable instructions;

[0097] The processor is configured to perform the downlink control information detection method described in any of the preceding embodiments.

[0098] According to an eighth aspect of the present disclosure, a downlink control information transmission apparatus is provided, comprising:

[0099] processor;

[0100] Memory used to store processor-executable instructions;

[0101] The processor is configured to execute the downlink control information transmission method described in any of the preceding embodiments.

[0102] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0103] In this embodiment, the terminal can detect and receive multiple DCIs based on their priority order within a time unit. Similarly, the base station can determine at least one DCI detected and received by the terminal within a time unit based on the priority order of the multiple DCIs and the maximum number of DCIs the terminal can support detecting within that time unit. In this disclosure, even when the number of DCIs the terminal needs to receive within a time unit exceeds the maximum number of DCIs the terminal supports, both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding unpredictable terminal behavior and ensuring consistent understanding of data transmission and reception between the terminal and the base station, thus preventing system performance degradation.

[0104] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0105] The accompanying drawings, which are incorporated in and form 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 This is a schematic diagram illustrating a downlink control information detection scenario according to an exemplary embodiment.

[0107] Figure 2 This is a schematic diagram of a downlink control information detection method according to an exemplary embodiment.

[0108] Figure 3 This is a schematic diagram of another downlink control information detection method according to an exemplary embodiment.

[0109] Figure 4 This is a schematic diagram of another downlink control information detection method according to an exemplary embodiment.

[0110] Figure 5 This is a schematic diagram of another downlink control information detection method according to an exemplary embodiment.

[0111] Figure 6 This is a schematic flowchart illustrating a downlink control information transmission method according to an exemplary embodiment.

[0112] Figure 7 This is a schematic diagram illustrating another downlink control information transmission method according to an exemplary embodiment.

[0113] Figure 8 This is a schematic diagram illustrating another downlink control information transmission method according to an exemplary embodiment.

[0114] Figure 9 This is a schematic diagram illustrating another downlink control information transmission method according to an exemplary embodiment.

[0115] Figure 10 This is a schematic diagram illustrating a downlink control information transmission and detection method according to an exemplary embodiment.

[0116] Figures 11A to 11B This is a schematic diagram illustrating a downlink control information detection scenario process according to an exemplary embodiment.

[0117] Figure 12 This is a block diagram of a downlink control information detection device according to an exemplary embodiment.

[0118] Figure 13 This is a block diagram of a downlink control information transmission device according to an exemplary embodiment.

[0119] Figure 14 This is a schematic diagram of a downlink control information detection device according to an exemplary embodiment of the present disclosure.

[0120] Figure 15 This is a schematic diagram of a downlink control information transmission device according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0121] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0122] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as 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 this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0124] In Rel-17 (Release-17), the MBS (Multicast Broadcast service) supports various service types, such as public safety and mission critical information, V2X (vehicle-to-everything) related information, IPTV (Internet Protocol TV), OTA (Over-The-Air), and group communication. The transmission cycle and transmission rate differ for each service type. For example, IPTV data arrival is often periodic, and the reliability requirements are generally low, while public safety warning information 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 scheduling different services. These search spaces have different PDCCH candidate configurations, different listening cycles, and may be bound to different G-RNTIs.

[0125] For a terminal, the number of DCIs that can be decoded within each time unit depends on the terminal's capabilities. For example, for a terminal that does not support FG 3-5b capabilities, its corresponding time unit is limited to one slot. In an FDD (Frequency Division Duplexing) band, only one DL (Downlink) DCI and one UL (Uplink) DCI can be detected within one slot. In a TDD (Test Driven Development) band, only one DL DCI and two UL DCIs, or two DL DCIs and one UL DCI, can be detected within one slot.

[0126] For terminals that support 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 DCIs 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 the terminal can only detect and receive a maximum of 2 DCIs, its behavior in time units such as slot #0, slot #4, and slot #8 will be unpredictable, potentially leading to inconsistencies in the network and terminal's understanding of data transmission and reception. This ultimately results in a degraded system performance.

[0129] To address the aforementioned technical issues, this disclosure provides a method for detecting and transmitting downlink control information. The downlink control information detection method provided in this disclosure will first be introduced from the perspective of the terminal side.

[0130] This disclosure provides a method for detecting downlink control information, referring to... Figure 2 As shown, Figure 2 This is a flowchart illustrating a downlink control information detection method 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, the corresponding DCI is detected and received based on the priority order of multiple downlink control information (DCIs). In this embodiment of the disclosure, the multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals. The group common DCI can be a common DCI for simultaneously scheduling MBS services of multiple terminals. For terminals that do not support FG 3-5b capabilities, the size of a time unit can be one slot; for terminals that support FG 3-5b capabilities, the size of a time unit can be one span.

[0132] In one possible implementation, the priority order of multiple DCIs can be pre-defined by the protocol. In another possible implementation, the priority order of multiple DCIs can be configured by the base station through higher-layer signaling, where the higher-layer signaling can be 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 has reached the maximum number of DCIs that the terminal can support detecting within the time unit, DCI detection is stopped within the time unit.

[0134] In the above embodiments, the terminal can detect and receive DCIs based on the priority order of multiple DCIs within a time unit. Once the number of DCIs detected and received within that time unit reaches the maximum number of DCIs that the terminal can support detecting within a time unit, the terminal stops DCI detection in that time unit. In this disclosure, the terminal can detect and receive DCIs based on the priority order of multiple DCIs, avoiding unpredictable terminal behavior and ensuring high availability.

[0135] In some alternative embodiments, the terminal may use the group common DCI as a unicast DCI and determine the number of detected received DCIs together with the unicast DCIs. 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 DCIs using, but is not limited to, any of the following methods:

[0136] In the first approach, the terminal prioritizes detecting and receiving the corresponding DCI in the group common search space. If the number of DCIs detected and received in the group common search space is less than the maximum number of unicast DCIs, i.e., it does not exceed the terminal's capability limit, the terminal continues to detect and receive the corresponding DCI in its specific search space.

[0137] Reference Figure 3 As shown, Figure 3 This is a flowchart illustrating a downlink control information detection method according to an embodiment, which can be used in a terminal. The method may include the following steps:

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

[0139] In this embodiment of the disclosure, the group common search space is a common search space used at least for transmitting the group common DCI. Both group common DCI and 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 it can be configured by the base station side through higher-layer signaling, wherein the higher-layer signaling can be RRC signaling.

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

[0141] The USS is the search space corresponding to the terminal for transmitting unicast DCI.

[0142] In this embodiment, only unicast DCIs can be transmitted on the USS (UE Search Space). If the number of DCIs detected and received by the terminal in the group common search space does not reach the maximum number of unicast DCIs, the terminal can continue to detect and receive the corresponding DCIs on the USS based on a second priority order. The second priority order can be pre-defined by the protocol or configured by the base station through higher-layer signaling, wherein the higher-layer signaling can be RRC signaling.

[0143] Step 302 is optional and should be performed if 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 has reached the maximum number of DCIs that the terminal can support detecting within the time unit, DCI detection is stopped within the time unit.

[0145] In the above embodiments, the terminal can preferentially detect and receive corresponding DCIs in the group common search space based on a first priority order. If the number of DCIs detected and received in the group common search space is less than the maximum number of unicast DCIs, the terminal continues to detect and receive corresponding DCIs in the USS based on a 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 that the terminal can support detecting in a time unit. At this point, DCI detection stops in the time unit. This achieves the purpose of the terminal detecting and receiving DCIs based on the priority order of multiple DCIs, avoiding unpredictable terminal behavior and ensuring high availability.

[0146] Optionally, the aforementioned 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 low to high; a priority order of group radio network temporary identifier values ​​from high to low or low to high; a priority order of terminal services; and a priority order of control resource set identifiers from high to low or 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 low to high; and a priority order of control resource set identifiers from high to low or low to high.

[0147] In one possible implementation, the first priority order can be used to indicate the group common searchspace ID (UCID) from low to high priority. The terminal can prioritize detecting and receiving the corresponding group common DCI within the group common searchspace with the lowest UCID. If the number of DCIs detected and received by the terminal in the group common searchspace is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCIs on the USS based on the second priority order. DCI detection stops within the time unit when the number of DCIs detected and received in that time unit reaches the maximum number of unicast DCIs that the terminal can support detecting in that time unit.

[0148] In another possible implementation, the first priority order can be used to indicate the order of Group Radio Network Temporary Identifiers (G-RNTIs), including but not limited to priority orders indicating G-RNTI values ​​from high to low or low to high. The terminal can detect and receive the corresponding Group Common Identifiers (DCIs) in the corresponding Group Common Search Space (UCS) according to the G-RNTI values ​​from high to low or low to high. If the number of DCIs detected and received by the terminal in the G-RNTI is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCIs on the USS based on the second priority order. DCI detection stops in the time unit when the number of DCIs detected and received in that time unit reaches the maximum number of unicast DCIs that the terminal can detect in that time unit.

[0149] In another possible implementation, the first priority order can be used to indicate the priority order of terminal services. The terminal can detect and receive the corresponding group common DCI in the corresponding group common search space according to the priority order of terminal services. If the number of DCIs detected and received by the terminal in the group common search space is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCIs in the USS based on the second priority order. DCI detection stops in the time unit when the number of DCIs detected and received in that time unit reaches the maximum number of unicast DCIs that the terminal can support detecting in that time unit.

[0150] In another possible implementation, the first priority order can be used to indicate the priority order of CORESET (Control Resource set) IDs from high to low or low to high. The terminal can detect and receive the corresponding group common DCIs in the corresponding group common search space according to the priority order of CORESET IDs from high to low or low to high. If the number of DCIs detected and received by the terminal in the group common search space is less than the maximum number of unicast DCIs, the terminal continues to detect and receive the corresponding DCIs in the USS based on the second priority order. DCI detection stops in the time unit when the number of DCIs detected and received in that time unit reaches the maximum number of unicast DCIs that the terminal can support detecting in that time unit.

[0151] The second approach prioritizes detecting and receiving the corresponding DCI on the USS. If the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs, i.e., it does not exceed the terminal's capability limit, then the corresponding DCIs continue to be detected and received in the group common search space.

[0152] Reference Figure 4 As shown, Figure 4 This is a flowchart illustrating a downlink control information detection method 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, the corresponding DCI is detected and received in the terminal-specific search space (USS) based on the second priority order.

[0154] In this embodiment, 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 can be pre-defined by the protocol, or it can be configured by the base station side through higher-layer signaling, wherein the higher-layer signaling can 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, the corresponding DCIs are detected and received in the group common search space based on a first priority order.

[0156] In this embodiment of the disclosure, the group common search space is a common search space used at least for transmitting 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 can continue to detect and receive the corresponding DCIs in the group common search space based on a first priority order. The DCIs received in the group common search space can be unicast DCIs or group common DCIs. The first priority order can be pre-agreed by the protocol or configured by the base station side through higher-layer signaling, wherein the higher-layer signaling can be RRC signaling.

[0157] Step 402 is optional and should be performed only if the number of DCIs detected and received on the USS has not reached 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 has reached the maximum number of DCIs that the terminal can support detecting within the time unit, DCI detection is stopped within the time unit.

[0159] In the above embodiments, the terminal can prioritize detecting and receiving corresponding DCIs on the USS based on a second priority order. If the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs, the terminal continues to detect and receive corresponding DCIs on the group common search space based on a 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 that the terminal can detect within a time unit. At this point, DCI detection stops within the time unit. This achieves the goal of the terminal detecting and receiving DCIs based on the priority order of multiple DCIs, avoiding unpredictable terminal behavior and ensuring 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 low to high; a priority order of control resource set identifiers from high to low or 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 low to high; a priority order of group radio network temporary identifier values ​​from high to low or low to high; a priority order of terminal services; a priority order of control resource set identifiers from high to low or low to high.

[0161] In one possible implementation, the second priority order is used to indicate the priority order of search space identifiers from high to low or from low to high. The terminal can detect and receive corresponding DCIs on the corresponding USS according to the second priority order of search space identifiers 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 corresponding DCIs on the group common search space based on the first priority order. DCI detection stops within the time unit when the number of DCIs detected and received in that time unit reaches the maximum number of unicast DCIs that the terminal can support detecting in that time unit.

[0162] The method by which the terminal detects and receives the corresponding DCI in the group common search space based on the first priority order is similar to the method in the above embodiment, and will not be described again here.

[0163] In another possible implementation, the second priority order is used to indicate the priority order of the control resource set identifiers 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 identifiers 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 DCIs on the group common search space based on the first priority order. DCI detection stops within the time unit when the number of DCIs detected and received in that time unit reaches the maximum number of unicast DCIs that the terminal can support detecting in that time unit.

[0164] The method by which the terminal detects and receives the corresponding DCI in the group common search space based on the first priority order is similar to the method in the above embodiment, and will not be described again here.

[0165] In some optional embodiments, when receiving and receiving DCI using the first or second method described above, all group common DCIs detected and received by the terminal in the group common search space can be regarded as unicast downlink DCIs. That is, when the terminal counts the received unicast downlink DCIs, it can count the group common DCIs received in the group common search space together with the unicast downlink DCIs received by the terminal to jointly determine the number of unicast downlink DCIs that the terminal can process.

[0166] In this embodiment of the disclosure, the unicast downlink DCI can be a DCI used for scheduling the unicast PDSCH (Physical Downlink Shared Channel). The unicast uplink DCI can be a DCI used for scheduling the unicast PUSCH (Physical Uplink Shared Channel).

[0167] In the above embodiments, the terminal prioritizes detecting and receiving the corresponding DCI on the group common search space, or the terminal prioritizes detecting and receiving the corresponding DCI on the USS. In both of these methods, the group common DCI detected and received by the terminal on the group common search space can be regarded as unicast downlink DCI, which avoids affecting the terminal's transmission of unicast uplink DCI and has high availability.

[0168] In some alternative embodiments, a new terminal capability can be defined separately for the terminal, which indicates the maximum number of group common DCIs that the terminal can support 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 separate maximum number of group common DCIs is defined for the terminal.

[0169] Reference Figure 5 As shown, Figure 5 This is a flowchart illustrating a downlink control information detection method 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 the terminal capabilities.

[0171] In this embodiment of the disclosure, the terminal capability is used to indicate the maximum number of group common DCIs that the terminal can support detecting within one time unit. Further, the terminal capability can be defined according to different serving cells. That is, it defines the maximum number of group common DCIs that the terminal can support detecting within one time unit on a serving cell. Specifically, for a terminal that does not support FG 3-5b capability, the corresponding time unit size is one slot; for a terminal that supports FG 3-5b capability, the corresponding time unit size is one span.

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

[0173] 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 radio network temporary identifier value from high to low or from low to high; the priority order of terminal services; and the priority order of the control resource set identifier from high to low or from low to high. The third priority order can be pre-defined by the protocol or configured by higher-layer signaling sent by the base station, wherein the higher-layer signaling can be RRC signaling.

[0174] In this embodiment, the way the terminal detects and receives the group common DCI in the group common search space based on the third priority order is similar to the way the terminal detects and receives the corresponding DCI in the group common search space based on the first priority order in the above embodiment, and will not be described again here.

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

[0176] In the above embodiments, new terminal capabilities can be defined for the terminal, and the maximum number of group common DCIs can be determined based on these capabilities. The terminal detects and receives group common DCIs in the group common search space according to a third priority order until the number of detected and received group common DCIs reaches the maximum number of group common DCIs, at which point DCI detection in the group common search space stops within the time unit. This also achieves the goal of the terminal detecting and receiving DCIs based on the priority order of multiple DCIs, avoiding unpredictable terminal behavior and ensuring high availability.

[0177] In some alternative embodiments, the terminal capabilities and unicast DCI processing capabilities of this disclosure can be shared. That is, the sum of the maximum number of group common DCIs indicated by the terminal capabilities and the number of unicast DCIs detected and received by the terminal in one time unit will not exceed the maximum number of unicast DCIs that the terminal can support detecting in one time unit, i.e., it will not exceed the terminal's current unicast DCI processing capability.

[0178] For example, if a terminal supports FG 3-1 and operates in the FDD band, then the terminal can process one unicast downlink DCI and one unicast uplink DCI within a time unit, such as one slot, with a maximum of two unicast DCIs. Assuming the terminal reports its capabilities to the base station, indicating that the maximum number of group common DCIs it supports detecting within a slot is N, then the terminal can process 2-N unicast DCIs within a slot.

[0179] In the above embodiments, 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. This combines the terminal's ability to process unicast DCIs, enabling the terminal to detect and receive DCIs based on the priority order of multiple DCIs, thus avoiding unpredictable terminal behavior.

[0180] Next, we will introduce the downlink control information transmission method provided in this disclosure from the perspective of the base station.

[0181] This disclosure provides a method for transmitting downlink control information, referring to... Figure 6 As shown, Figure 6 This is a flowchart illustrating a downlink control information transmission method 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 (DCI) messages are sent to the terminal within a time unit.

[0183] Among the plurality of DCIs, at least one group common DCI is included for simultaneously scheduling terminal services of multiple terminals. In this embodiment of the disclosure, terminal services may refer to MBS services or other services, and this disclosure does not limit this.

[0184] In step 602, based on the priority order of the plurality of DCIs and the maximum number of DCIs that the terminal can detect within a time unit, at least one DCI detected and received by the terminal among the plurality of DCIs within the time unit is determined.

[0185] In this embodiment of the disclosure, the priority order can be predetermined by the protocol or configured by the base station through higher-layer signaling, which can be RRC signaling.

[0186] In the above embodiments, 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 that the terminal can detect within the time unit. This enables both the terminal and the base station to accurately determine the DCI detected and received by the terminal, avoiding unpredictable terminal behavior and preventing system performance degradation.

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

[0188] In the first approach, the terminal prioritizes detecting and receiving the corresponding DCI in the group common search space. If the number of DCIs detected and received in the group common search space is less than the maximum number of unicast DCIs (i.e., not exceeding the terminal's capacity limit), the terminal continues to detect and receive the corresponding DCI in its specific search space. The base station can transmit DCIs and determine the specific DCIs received by the terminal within a time unit using the following methods:

[0189] Reference Figure 7 As shown, Figure 7 This is a flowchart illustrating a downlink control information transmission method 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 (DCI) messages are sent to the terminal within a time unit.

[0191] Among them, the plurality of DCIs includes 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 transmitted by the base station in 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 maximum number of DCIs transmitted by the base station in the group common search space based on a first priority order within the time unit.

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

[0194] In this embodiment of the disclosure, if the first number of DCIs sent by the base station in the group common search space has reached or exceeded the terminal's 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 maximum number of unicast DCIs sent by the base station in the group common search space based on the first priority order within that time unit.

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

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

[0197] The USS is the 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 number of unicast DCIs.

[0198] In this embodiment of the disclosure, if the base station determines that the first number of DCIs transmitted in the group common search space does not exceed the terminal's capacity, i.e., the first number is less than the maximum number of unicast DCIs, then the base station can determine that the terminal will detect and receive the first number of DCIs transmitted by the base station in the group common search space based on a first priority order, and detect and receive the second number of DCIs transmitted by the base station in 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 number of unicast DCIs.

[0199] The first priority order indicates at least one of the following: the priority order of group common search space identifiers from high to low or low to high; the priority order of group radio network temporary identifier values ​​from high to low or low to high; the priority order of terminal services; and the priority order of control resource set identifiers from high to low or low to high. The second priority order indicates at least one of the following: the priority order of search space identifiers from high to low or low to high; and the priority order of control resource set identifiers from high to low or low to high. The first priority order and / or the second priority order can be agreed upon by a protocol or configured by the base station via RRC signaling.

[0200] In the above embodiments, the base station can determine the DCI detected and received by the terminal among multiple DCIs based on the priority order of multiple DCIs and the maximum number of unicast DCIs that the terminal supports detecting. This enables both the terminal and the base station to accurately determine the DCI detected and received by the terminal, avoiding unpredictable terminal behavior and preventing system performance degradation.

[0201] In the second approach, the terminal prioritizes detecting and receiving the corresponding DCI on the USS. If the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs (i.e., not exceeding the terminal's capacity limit), the terminal continues to detect and receive the corresponding DCI on the group common search space. The base station can use the following methods to send DCIs and determine the specific DCIs received by the terminal within a time unit:

[0202] Reference Figure 8 As shown, Figure 8 This is a flowchart illustrating a downlink control information transmission method 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 (DCI) messages are sent to the terminal within a time unit.

[0204] Among them, the plurality of DCIs includes 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 transmitted 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 maximum number of DCIs transmitted by the base station on the USS within the time unit based on a second priority order.

[0206] The USS is the search space corresponding to the terminal for transmitting unicast DCI.

[0207] In this embodiment of the disclosure, if the third number of DCIs sent by the base station on the USS has reached or exceeded the terminal's 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 maximum number of unicast DCIs sent by the base station on the USS based on the second priority order within that time unit.

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

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

[0211] In this embodiment of the disclosure, if the base station determines that the third number of DCIs transmitted on the USS does not exceed the terminal's capacity, i.e., the third number is less than the maximum number of unicast DCIs, then the base station can determine that the terminal will detect and receive the third number of DCIs transmitted by the base station on the USS based on a second priority order, and detect and receive the fourth number of DCIs transmitted by the base station on the group common search space based on a first priority order. The sum of the third number and the fourth number is equal to the maximum number of unicast DCIs.

[0212] The first priority order indicates at least one of the following: the priority order of group common search space identifiers from high to low or low to high; the priority order of group radio network temporary identifier values ​​from high to low or low to high; the priority order of terminal services; and the priority order of control resource set identifiers from high to low or low to high. The second priority order indicates at least one of the following: the priority order of search space identifiers from high to low or low to high; and the priority order of control resource set identifiers from high to low or low to high. The first priority order and / or the second priority order can be agreed upon by a protocol or configured by the base station via RRC signaling.

[0213] In the above embodiments, the base station can determine the DCI detected and received by the terminal among multiple DCIs based on the priority order of multiple DCIs and the maximum number of unicast DCIs that the terminal supports detecting. This enables both the terminal and the base station to accurately determine the DCI detected and received by the terminal, avoiding unpredictable terminal behavior and preventing system performance degradation.

[0214] In some alternative embodiments, at least one of the first priority order and the second priority order described above can be configured by the base station through higher-layer signaling, which can be RRC signaling.

[0215] Of course, the base station may also choose not to 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 the protocol agreement.

[0216] In the above embodiments, the base station can configure at least one of the first priority order and the second priority order through higher-layer signaling, which is simple and highly available.

[0217] In some alternative embodiments, for the first or second method described above, the group common DCI sent by the base station to the terminal in the group common search space is regarded as unicast downlink DCI. That is, both the base station and the terminal can regard the group common DCI transmitted in the group common search space as unicast downlink DCI, so that the base station side and the terminal side have a consistent understanding of the transmitted and received DCI, and the transmission of unicast uplink DCI can be avoided.

[0218] In this embodiment of the disclosure, the unicast downlink DCI can be a DCI used for scheduling unicast PDSCH. The unicast uplink DCI can be a DCI used for scheduling unicast PUSCH. In some alternative embodiments, a new terminal capability can be defined for the terminal, which indicates the maximum number of group common DCIs that the terminal supports detecting within a time unit. Further, the terminal capability indicates the maximum number of group common DCIs that the terminal supports detecting within a time unit on a serving cell. The base station can transmit DCIs and determine the specific DCIs received by the terminal within a time unit in the following manner:

[0219] Reference Figure 9 As shown, Figure 9 This is a flowchart illustrating a downlink control information transmission method 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 (DCI) messages are sent to the terminal within a time unit.

[0221] Among them, the plurality of DCIs includes 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 transmitted by the base station in 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 transmitted by the base station in 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 indicates at least one of the following: the priority order of the group common search space identifier from high to low or low to high; the priority order of the group radio network temporary identifier value from high to low or low to high; the priority order of terminal services; and the priority order of the control resource set identifier from high to low or low to high. The third priority order can be configured by the base station via RRC signaling or pre-defined by the protocol.

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

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

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

[0227] In the above embodiments, the base station can determine the DCI detected and received by the terminal among multiple DCIs based on the priority order of multiple DCIs and the maximum number of common DCIs indicated by the terminal's capabilities. This enables both the terminal and the base station to accurately determine the DCI detected and received by the terminal, avoiding unpredictable terminal behavior and preventing system performance degradation.

[0228] In some alternative embodiments, the sum of the maximum number of group common DCIs indicated by the terminal capability and the number of unicast DCIs sent to the terminal by the base station in one time unit may be less than or equal to the maximum number of unicast DCIs that the terminal can detect in one time unit.

[0229] In the above embodiments, the sum of the maximum number of group common DCIs indicated by the terminal capability and the number of unicast DCIs sent to the terminal by the base station in one time unit is less than or equal to the maximum number of unicast DCIs that the terminal can support detecting in one time unit. This achieves the purpose of combining the terminal's ability to process unicast DCIs, enabling the terminal to detect and receive DCIs based on the priority order of multiple DCIs, and avoiding unpredictable terminal behavior.

[0230] It should also be noted that, for a base station, if it is determined that the number of multiple DCIs to be sent to the terminal in a certain time unit exceeds the terminal's capacity, that is, exceeds the maximum number of DCIs that the terminal can support detecting in a time unit, then the terminal can determine at least one target DCI among 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, wherein the number of target DCIs is equal to the maximum number of DCIs.

[0231] In one possible implementation, if the maximum number of DCIs is the maximum number of unicast DCIs, then the base station can determine the DCIs of the maximum number of unicast DCIs to be sent in the group common search space based on a first priority order, provided that the first number of DCIs to be sent in 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 number of unicast DCIs, then the base station can determine that the target DCIs to be sent to the terminal include the first number of DCIs to be sent in the group common search space and the second number of DCIs to be sent in the USS. Here, the USS is the search space corresponding to the terminal for transmitting unicast DCIs, and the sum of the first and second numbers is equal to the maximum number of unicast DCIs.

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

[0234] If the third number is less than the maximum number of unicast DCIs, the base station can determine that the target DCIs to be sent to the terminal include 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 for transmitting the group common DCIs, and the sum of the third and fourth numbers is equal to the maximum number of unicast DCIs.

[0235] In another alternative implementation, if the maximum number of DCIs is a maximum group common DCI number determined based on terminal capabilities, the base station can, if it determines that the fifth number of group common DCIs to be transmitted in the group common search space is greater than the maximum number of group common DCIs, determine the target DCI of the maximum number of group common DCIs to be transmitted in the group common search space based on a third priority order. Here, the group common search space is a common search space at least used for transmitting the group common DCIs. The base station can then send the target DCI of the maximum number of group common DCIs to the terminal.

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

[0237] The first priority order indicates at least one of the following: the priority order of group common search space identifiers from high to low or low to high; the priority order of group radio network temporary identifier values ​​from high to low or low to high; the priority order of terminal services; and the priority order of control resource set identifiers from high to low or low to high. The second priority order indicates at least one of the following: the priority order of search space identifiers from high to low or low to high; and the priority order of control resource set identifiers from high to low or low to high. The third priority order indicates at least one of the following: the priority order of group common search space identifiers from high to low or low to high; the priority order of group radio network temporary identifier values ​​from high to low or low to high; the priority order of terminal services; and the priority order of control resource set identifiers from high to low or low to high.

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

[0239] In the above embodiments, 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 that the terminal can detect in a time unit, thereby avoiding the transmission of invalid DCIs, reducing energy consumption and resource overhead.

[0240] In some alternative embodiments, refer to Figure 10 As shown, Figure 10 This is a flowchart illustrating a downlink control information transmission and detection method according to an embodiment. The method may include the following steps:

[0241] In step 1001, the base station sends multiple downlink control information (DCI) messages to the terminal within one time unit.

[0242] Among them, the plurality of DCIs includes at least a group common DCI for simultaneously scheduling terminal services of multiple terminals.

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

[0244] In step 1003, in response to determining that the number of DCIs detected and received within the time unit has reached the maximum number of DCIs that the terminal can support detecting within one time unit, the terminal stops DCI detection within the time unit.

[0245] In step 1004, the base station determines at least one DCI detected and received by the terminal among the plurality of DCIs within the time unit, based on the priority order of the plurality of DCIs and the maximum number of DCIs that the terminal can detect within the time unit.

[0246] In the above embodiments, the terminal can detect and receive DCIs based on the priority order of multiple DCIs within a time unit. Similarly, the base station can determine at least one DCI detected and received by the terminal within a time unit based on the priority order of the multiple DCIs and the maximum number of DCIs the terminal can support detecting within a time unit. In this 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 unpredictable terminal behavior and ensuring consistent understanding of data transmission and reception between the terminal and the base station, thus preventing system performance degradation.

[0247] The following is a further example illustrating the downlink control information detection process described above.

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

[0249] Reference Figure 11AAs shown, it is assumed that when the terminal calculates the number of received DCIs, it treats group common DCIs as unicast DCIs and calculates the number of received DCIs together with the unicast DCIs. In this embodiment, it is assumed that the terminal's ability to detect DCIs is limited to a maximum of 2 unicast DCIs.

[0250] In this embodiment, it is assumed that the base station configures N different periodic CSSs for the terminal to transmit group common DCIs for scheduling different MBS services. It is also assumed that the RNTI values ​​used for scrambling the MBSDCIs transmitted in different CSSs are different. Furthermore, it is assumed that the USS transmission period configured by the network side for the terminal is one slot. See the specific diagram below. Figure 11A As shown.

[0251] In slots 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 this embodiment, the method described herein is illustrated using the terminal's DCI processing in slot #0 as an example. In slot #0, there are three search space configurations: USS, CSS#1, and CSS#2. The terminal detects and receives DCI using the following method:

[0252] The terminal first detects and receives group common DCI in CSS#1 and CSS#2, and only continues to detect and receive DCI in the USS if the number of DCI received in all CSSs is less than 2. Within this slot, the terminal needs to detect multiple CSSs. When detecting and receiving DCI in these CSSs, the following steps must be followed:

[0253] Based on the group common search space ID, priority is given to detecting and receiving group common DCI within the search space with the lower search space ID. In this embodiment, the terminal first detects and receives DCI in CSS#1, and if it does not exceed the terminal's capabilities, it continues to detect and receive DCI in CSS#2.

[0254] After the terminal completes the detection and reception of DCI in CSS#1 and CSS#2, if the number of DCIs received at this time has not yet reached the terminal's capacity limit, it continues to detect and receive DCIs in USS.

[0255] Optionally, the base station can transmit the DCI according to relevant technologies and determine the specific DCI received by the terminal based on the methods provided in this disclosure. Alternatively, when transmitting the DCI, the base station can avoid transmitting invalid DCIs, thereby avoiding energy waste and resource overhead. For example, refer to... Figure 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 values. In this embodiment, the terminal can determine the DCI detection and reception order according to the following rules:

[0256] Based on the order of RNTI values, the received DCI is detected first within 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 will first detect and receive DCI within CSS#1. Then, if the number of received DCIs at this point does not exceed the terminal's capacity limit, the detection and reception of DCIs will continue within CSS#2.

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

[0258] Alternatively, the received DCI can be 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] For example Figure 11B As shown, assuming a CSS can be configured with multiple G-RNTIs, the terminal needs to detect and receive DCI according to multiple G-RNTIs within CSS#1. When detecting DCI in CSS#1, the terminal determines the order of DCI detection and reception according to the order of RNTI values. In this embodiment, the terminal can determine the DCI detection and reception order according to the following rules:

[0261] Based on the order of RNTI values, the DCI is detected and received first within the CSS with the largest 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 will first detect and receive the DCI within CSS#1. Then, if the number of DCIs received at this point does not exceed the terminal's capacity limit, the detection and reception of DCIs will continue within CSS#2.

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

[0263] Alternatively, the received DCI can be 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 order of search space identifier from low to high or from high to low, and then detect and receive DCIs in CSS#1 in 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 Figure 11A As shown, the terminal detects and receives the corresponding DCI according to the priority order of terminal services. This first priority order can be configured by the base station through higher-layer signaling. The physical location of the terminal can determine the corresponding service based on parameters such as search space, RNTI, and listening period.

[0267] When transmitting DCI, base stations can consider the above methods to avoid transmitting invalid DCI, thus avoiding energy waste and resource consumption.

[0268] For example, refer to Figure 11A As shown, when a terminal detects and receives both unicast PDCCH and groupcommon PDCCH within the same slot, the DCIs are detected sequentially according to the CORESET ID. In this embodiment, CSSs transmitted within lower-numbered CORESETs are detected first.

[0269] When transmitting DCI, base stations can consider the above methods to avoid transmitting invalid DCI, thus avoiding energy waste and resource consumption.

[0270] For example, when transmitting DCI, the base station can transmit based on relevant mechanisms, that is, without considering the priority of DCI. The downlink control information detection method provided in this disclosure is implemented only on the terminal side.

[0271] For example, when detecting received DCIs, the terminal prioritizes detecting USS. If there are multiple USSs or the number of received DCIs to be detected within a USS exceeds the terminal's maximum supported capacity, then the received DCIs within the USS are detected in the following order:

[0272] The DCI is detected and received according to the search space number.

[0273] Alternatively, following the order of CORESET IDs, priority is given to detecting and receiving the DCI within CORESETs with lower CORESET IDs.

[0274] After completing the detection of the USS, if the number of received DCIs does not exceed the terminal's capacity, continue detecting received DCIs within the CSS, following the order and rules below, until the number of received DCIs reaches the terminal's capacity limit:

[0275] Based on the group common search space ID, priority is given to detecting and receiving group common DCI within the search space with the lower search space ID.

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

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

[0278] Alternatively, following the order of CORESET IDs, priority is given to detecting received group common DCIs within CORESETs with lower CORESET IDs.

[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 example, in this embodiment, a completely new capability is defined for the terminal, specifying the maximum number of MBSDCIs that the terminal can support within a time unit on a serving cell. This capability is independent of the currently defined terminal capabilities and represents additional performance capabilities that the terminal supports on top of its existing capabilities. The time unit can be a slot or a span; this embodiment does not impose any restrictions.

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

[0282] Based on the group common search space ID, priority is given to detecting and receiving group common DCI within the search space with the lower search space ID.

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

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

[0285] Alternatively, following the order of CORESET IDs, priority is given to detecting received group common DCIs within CORESETs with lower CORESET IDs.

[0286] 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 shall not exceed the maximum number of unicast DCIs that the terminal supports detecting within one time unit.

[0287] Corresponding to the aforementioned embodiments of the application function implementation method, this disclosure also provides embodiments of the application function implementation apparatus.

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

[0289] The execution module 1201 is configured to detect and receive corresponding DCIs based on the priority order of multiple downlink control information DCIs within a time unit; wherein, the multiple DCIs include at least 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 has reached the maximum number of DCIs that the terminal can support detecting in the time unit.

[0291] In some alternative embodiments, the maximum number of DCIs is the maximum number of unicast DCIs;

[0292] The execution module includes:

[0293] The first execution submodule is configured to detect and receive the corresponding DCI in the group common search space based on a first priority order within one time unit; wherein the group common search space is a common search space used at least for transmitting the group common DCI;

[0294] The second execution submodule is configured to detect and receive corresponding DCIs in a terminal-specific search space (USS) based on a second priority order in response to determining that the number of DCIs detected and received in 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 DCIs.

[0295] In some alternative embodiments, the maximum number of DCIs is the maximum number of unicast DCIs;

[0296] The execution module includes:

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

[0298] The fourth execution submodule is configured to detect and receive the corresponding DCIs in the 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 used at least for transmitting the group common DCIs.

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

[0300] The group public search space is identified by priority order from high to low or from low to high.

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

[0302] Priority order of terminal services;

[0303] The control resource set identifiers are ordered from high to low or low to high priority.

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

[0305] Search space identifiers are ranked in order of priority from high to low or from low to high.

[0306] The control resource set identifiers are ordered from high to low or low to high priority.

[0307] In some alternative embodiments, the apparatus further includes any of the following:

[0308] The first determining module is configured to determine the first priority order based on the protocol agreement;

[0309] The second determining 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 alternative embodiments, the apparatus further includes any of the following:

[0311] The third determining module is configured to determine the second priority order based on the protocol agreement;

[0312] The fourth determining 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 alternative embodiments, group common DCIs detected and received in the group common search space are regarded as unicast downlink DCIs.

[0314] In some alternative embodiments, the apparatus further includes:

[0315] The fifth determining 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 that the terminal can support detection within one time unit.

[0316] In some alternative embodiments, the terminal capability is used to indicate the maximum number of group common DCIs that the terminal supports detecting within a time unit on a serving cell.

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

[0318] The fifth execution submodule is configured to detect and receive the group common DCI in the group common search space based on a third priority order within one time unit; wherein the group common search space is a common search space used at least for transmitting the group common DCI;

[0319] The control module includes:

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

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

[0322] The group public search space is identified by priority order from high to low or from low to high.

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

[0324] Priority order of terminal services;

[0325] The control resource set identifiers are ordered from high to low or low to high priority.

[0326] In some alternative embodiments, the apparatus further includes any of the following:

[0327] The sixth determining module is configured to determine the third priority order based on the protocol agreement;

[0328] The seventh determining 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 alternative embodiments, 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 that the terminal supports detecting within one time unit.

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

[0331] The sending module 1301 is configured to send multiple downlink control information (DCI) messages to the terminal within a time unit; wherein, the multiple DCI messages include at least a group common DCI message 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 among the plurality of DCIs in the time unit based on the priority order of the plurality of DCIs and the maximum number of DCIs that the terminal can detect in a time unit.

[0333] In some alternative embodiments, the maximum number of DCIs is the maximum number of unicast DCIs;

[0334] The DCI determination module includes:

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

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

[0337] In some alternative embodiments, the maximum number of DCIs is the maximum number of unicast DCIs;

[0338] The first DCI determination module includes:

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

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

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

[0342] The group public search space is identified by priority order from high to low or from low to high.

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

[0344] Priority order of terminal services;

[0345] The control resource set identifiers are ordered from high to low or low to high priority.

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

[0347] Search space identifiers are ranked in order of priority from high to low or from low to high.

[0348] The control resource set identifiers are ordered from high to low or low to high priority.

[0349] In some alternative embodiments, the apparatus further includes:

[0350] The first transmitting module is configured to transmit 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 alternative embodiments, group public DCIs sent to the terminal over the group public search space are regarded as unicast downlink DCIs.

[0352] In some alternative embodiments, the maximum number of DCIs is determined based on the terminal capabilities of the terminal, representing the maximum number of group common DCIs.

[0353] The DCI determination module includes:

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

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

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

[0357] The group public search space is identified by priority order from high to low or from low to high.

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

[0359] Priority order of terminal services;

[0360] The control resource set identifiers are ordered from high to low or low to high priority.

[0361] In some alternative embodiments, the apparatus further includes:

[0362] The second transmitting module is configured to transmit Radio Resource Control (RRC) signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the third priority order configured by the base station.

[0363] In some alternative embodiments, the sum of the maximum number of group common DCIs indicated by the terminal capability and the number of unicast DCIs sent to the terminal by the base station in one time unit is less than or equal to the maximum number of unicast DCIs that the terminal can detect in one time unit.

[0364] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this disclosure according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0365] Accordingly, this disclosure also provides a computer-readable storage medium storing a computer program for executing any of the downlink control information detection methods described above.

[0366] Accordingly, this disclosure also provides a computer-readable storage medium storing a computer program for executing any of the downlink control information transmission methods described above.

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

[0368] processor;

[0369] Memory used to store processor-executable instructions;

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

[0371] Figure 14This is a block diagram illustrating an electronic device 1400 according to an exemplary embodiment. For example, the electronic device 1400 may be a mobile phone, tablet computer, e-book reader, multimedia playback device, wearable device, in-vehicle terminal, iPad, smart TV, and other terminals.

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

[0373] Processing component 1402 typically controls the overall operation of electronic device 1400, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 1402 may include one or more processors 1420 to execute instructions to complete all or part of the steps of the downlink control information detection method described above. Furthermore, processing component 1402 may include one or more modules to facilitate interaction between processing component 1402 and other components. For example, processing component 1402 may include a multimedia module to facilitate interaction between multimedia component 1408 and processing component 1402. Alternatively, processing component 1402 may read executable instructions from memory to implement the steps of a downlink control information detection method provided in the above embodiments.

[0374] Memory 1404 is configured to store various types of data to support the operation of electronic device 1400. Examples of this data include instructions for any application or method operating on electronic device 1400, contact data, phonebook data, messages, pictures, videos, etc. 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 storage, flash memory, magnetic disk, or optical disk.

[0375] Power supply component 1406 provides power to various components of electronic device 1400. 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 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-facing camera and / or a rear-facing camera. When the electronic device 1400 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera can receive external multimedia data. Each front-facing camera and rear-facing camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0377] Audio component 1410 is configured to output and / or input audio signals. For example, audio component 1410 includes a microphone (MIC) configured to receive external audio signals when electronic device 1400 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 1404 or transmitted via communication component 1418. In some embodiments, 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 buttons, volume buttons, power buttons, and lock buttons.

[0379] Sensor assembly 1416 includes one or more sensors for providing state assessments of various aspects of electronic device 1400. For example, sensor assembly 1416 may detect the on / off state of electronic device 1400, the relative positioning of components such as the display and keypad of electronic device 1400, changes in position of electronic device 1400 or a component of electronic device 1400, the presence or absence of user contact with electronic device 1400, the orientation or acceleration / deceleration of electronic device 1400, and temperature changes of electronic device 1400. Sensor assembly 1416 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1416 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 1416 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0380] Communication component 1418 is configured to facilitate wired or wireless communication between electronic device 1400 and other devices. Electronic device 1400 can access wireless networks based on communication standards, such as Wi-Fi, 2G, 3G, 4G, 5G, or 6G, or combinations thereof. In one exemplary embodiment, communication component 1418 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 1418 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may 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 may 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 perform the downlink control information detection method described above.

[0382] In an exemplary embodiment, a non-transitory machine-readable storage medium including instructions is also provided, such as a memory 1404 including instructions, which can be executed by a processor 1420 of an electronic device 1400 to complete the aforementioned downlink control information detection method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0383] Accordingly, this disclosure also provides a downlink control information transmission device, comprising:

[0384] processor;

[0385] Memory used to store processor-executable instructions;

[0386] The processor is configured to execute any of the downlink control information transmission methods described above.

[0387] like Figure 15 As shown, Figure 15 This is a schematic diagram illustrating the structure of a downlink control information transmitting apparatus 1500 according to an exemplary embodiment. The apparatus 1500 can be provided as a base station. (Refer to...) Figure 15 The device 1500 includes a processing component 1522, a wireless transmitting / receiving component 1524, an antenna component 1526, and a signal processing section 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 can be configured to perform any of the downlink control information transmission methods described above.

[0389] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0390] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this 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: Within a time unit, downlink control information (DCI) is detected and received in the group common search space and the terminal-specific search space (USS) based on priority order; based on the maximum number of DCIs that the terminal can detect within the time unit, the detection of DCIs in the group common search space and the USS is stopped; wherein, the number of DCIs received by the terminal within the time unit is less than or equal to the maximum number of DCIs that the terminal can detect within the time unit. Wherein, the group common search space is a common search space used at least for transmitting group common DCI; the group common DCI is a group common DCI used for simultaneously scheduling terminal services of multiple terminals; and the USS is a search space corresponding to the terminal used 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 public search space identifiers from high to low or from low to high; and the second priority order is used to indicate the priority order of the USS identifiers from high to low or from low to high.

3. The method according to claim 2, characterized in that, Within a time unit, DCI detection is performed on the group common search space and the terminal-specific search space (USS) based on priority order; and DCI detection is stopped in the group common search space and USS based on the maximum number of DCIs that the terminal can support detection within the time unit, including at least one of the following: Within the time unit, the corresponding DCI is detected in the group common search space based on the first priority order; if the number of corresponding DCIs detected in the group common search space based on the first priority order is less than the maximum number of DCIs supported by the terminal, the corresponding DCI is detected in the USS based on the second priority order. Based on the maximum number of DCIs that the terminal can support detecting within the time unit, the detection of DCIs on the USS is stopped. Within the time unit, the corresponding DCI is detected in the group common search space based on the first priority order; Based on the maximum number of DCIs that the terminal can detect within the time unit, the detection of DCIs in the group of common search spaces is stopped. Within the time unit, the corresponding DCI is detected on the USS based on the second priority order; If the number of corresponding DCIs detected on the USS based on the second priority order is less than the maximum number of DCIs supported by the terminal, the corresponding DCIs are detected on the group common search space based on the first priority order. Based on the maximum number of DCIs that the terminal can detect within the time unit, the detection of DCIs in the group of common search spaces is stopped. Within the time unit, the corresponding DCI is detected on the USS based on the second priority order; Based on the maximum number of DCIs that the terminal can support detecting within the time unit, the detection of DCIs on the USS is stopped.

4. The method according to claim 2 or 3, characterized in that, The method further includes any one of the following: Based on the agreement, the first priority order is determined; The first priority order is determined based on the 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 includes any one of the following: Based on the agreement, the second priority order is determined; The second priority order is determined based on the Radio Resource Control (RRC) signaling sent by the base station.

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

7. The method according to any one of claims 1-6, characterized in that, The method further includes: The maximum number of DCIs is determined based on the terminal capabilities; wherein the terminal capabilities are used to indicate the maximum number of group common DCIs that the terminal can support detection 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 that the terminal supports detecting within a time unit on a serving cell.

9. The method according to claim 7 or 8, characterized in that, The sum of the maximum number of common DCIs indicated by the terminal capability and the number of unicast DCIs detected by the terminal within a time unit is less than or equal to the maximum number of unicast DCIs that the terminal supports detecting within a time unit.

10. A method for transmitting downlink control information, characterized in that, The method is executed by the base station and includes: Within a time unit, multiple downlink control information (DCI) messages are sent to the terminal; wherein, at least one of the multiple DCI messages is a group common DCI message; the group common DCI message is a group common DCI message used to simultaneously schedule terminal services of multiple terminals. Within a time unit, the terminal is determined to detect DCIs in the group common search space and the terminal-specific search space (USS) based on priority order; based on the maximum number of DCIs that the terminal can support detecting within the time unit, the terminal is determined to stop detecting DCIs in 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 that the terminal can support detecting within the time unit. Wherein, the group common search space is a common search space used at least for transmitting the group common DCI; the USS is a search space corresponding to the terminal 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 public search space identifiers from high to low or from low to high; and the second priority order is used to indicate the priority order of the USS identifiers from high to low or from low to high.

12. The method according to claim 11, characterized in that, Within a time unit, the method of determining whether the terminal detects DCIs in the group common search space and the terminal-specific search space (USS) based on priority order; and determining whether the terminal stops detecting DCIs in the group common search space and the USS based on the maximum number of DCIs that the terminal can support detection within the time unit, includes at least one of the following: Within the time unit, it is determined that the terminal detects the corresponding DCI in the group common search space based on the first priority order; if the number of corresponding DCIs detected in the group common search space based on the first priority order is less than the maximum number of DCIs that the terminal can detect, it is determined that the terminal detects the corresponding DCI in the USS based on the second priority order. Based on the maximum number of DCIs that the terminal can detect within the time unit, it is determined that the terminal will stop detecting DCIs on the USS. Within the time unit, it is determined that the terminal detects the corresponding DCI in the group common search space based on the first priority order; Based on the maximum number of DCIs that the terminal can detect within the time unit, it is determined that the terminal will stop detecting DCIs in the group of common search spaces. Within the time unit, it is determined that the terminal detects the corresponding DCI on the USS based on the second priority order; If the number of corresponding DCIs detected on the USS based on the second priority order is less than the maximum number of DCIs that the terminal can detect, it is determined that the terminal detects the corresponding DCIs on the group common search space based on the first priority order. Based on the maximum number of DCIs that the terminal can detect within the time unit, it is determined that the terminal will stop detecting DCIs in the group of common search spaces. Within the time unit, it is determined that the terminal detects the corresponding DCI on the USS based on the second priority order; Based on the maximum number of DCIs that the terminal can detect within the time unit, it is determined that the terminal will stop detecting DCIs on the USS.

13. The method according to claim 11 or 12, characterized in that, The method further includes: 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.

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

15. The method according to any one of claims 10-14, characterized in that, Group common DCIs sent to the terminal in the group common search space are considered unicast downlink DCIs.

16. The method according to any one of claims 10-15, characterized in that, The maximum number of DCIs is the maximum number of group common DCIs determined based on the terminal's terminal capabilities.

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

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

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

20. A downlink control information transmitting device, characterized in that, The device is applied to a base station and includes: The sending module is configured to send multiple downlink control information (DCI) messages to the terminal within a time unit; wherein, the multiple DCI messages include at least a group common DCI message; the group common DCI message is a group common DCI message used to simultaneously schedule terminal services of multiple terminals. The processing module is configured to, within a time unit, determine, based on priority, whether the terminal detects DCIs in the group common search space and the terminal-specific search space (USS); and, based on the maximum number of DCIs that the terminal can support detecting within the time unit, determine whether the terminal should stop detecting DCIs in 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 that the terminal can support detecting within the time unit. Wherein, the group common search space is a common search space used at least for transmitting the group common DCI; the USS is a search space corresponding to the terminal used for transmitting unicast DCI.

21. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for executing the downlink control information detection method according to any one of claims 1-9 or 10-18.

22. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for executing the downlink control information transmission method according to any one of claims 1-9 or 10-18.

23. A downlink control information detection device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the downlink control information detection method according to any one of claims 1-9.

24. A downlink control information transmitting device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the downlink control information transmission method according to any one of claims 10-18.

Images