WO2021239040A1 - 控制信息dci传输方法及相关设备 - Google Patents
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W72/00—Local resource management
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- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
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Definitions
- This application belongs to the field of communication technology, and in particular relates to a method for transmitting control information DCI and related equipment.
- a physical downlink control channel (Physical downlink control channel, PDCCH) carries downlink control information (Downlink Control Information, DCI).
- DCI Downlink Control Information
- L 1, 2, 4, 8, or 16 CCEs can be allocated, where the number of CCEs of the DCI is expressed as aggregation level (AL).
- the network device configuration can be search space (Search space, SS) set, SS includes the following two types:
- a user-specific search space (UE-specific Search Space, USS) set monitored by a single terminal (User Equipment, UE).
- the UE is further configured with PDCCH candidates (PDCCH candidates) that it needs to monitor (monitoring).
- PDCCH candidates PDCCH candidates
- the UE will perform blind decoding on the PDCCH candidates carrying DCI to demodulate and schedule its own control information. Monitoring a large number of PDCCH candidates or CCEs will increase the complexity of the UE.
- the NR system specifies the maximum number of blind detections and the maximum number of channel estimates for the UE in a unit time, that is, blind detection in all search spaces The sum of the total and the channel estimation cannot exceed the upper limit.
- the number of PDCCH candidates/CCEs changes between time slots. Therefore, allowing the base station (BS) to configure the UE for each time slot (slot) or the number of PDCCH candidates/CCEs for the first monitoring span (span) of each slot exceeds the capacity limit of the UE, which is also called overbooking.
- the system only supports self-carrier scheduling of the PCell, and the primary cell (Pcell) is usually configured to send multiple CSS sets and USS sets, so that the PDCCH overhead of the PCell is relatively large.
- the purpose of the embodiments of the present application is to provide a control information DCI transmission method and related equipment, which can solve the problem of large PDCCH overhead of the PCell.
- a method for transmitting control information DCI which is applied to a terminal, and includes:
- the first search space set is any search space set in the N search space sets, at least one search space set in the N search space sets includes a first search space, and the first search space is the first search space set.
- the cell schedules a search space for a second cell, the first cell is a secondary cell Scell, and the number of PDCCH candidates in the second search space set is less than or equal to the maximum number of PDCCH candidates supported by the terminal.
- a device for transmitting control information DCI including:
- the receiving module is used to transmit configuration information, where the configuration information is used to allocate N search space sets, where N is a positive integer;
- the discarding module is configured to discard part or all of the PDCCH candidates in at least one search space in the first search space set when the number of PDCCH candidates in the first search space set is greater than the maximum number of PDCCH candidates supported by the terminal to obtain a second search Space set
- a detection module configured to transmit DCI on the second search space set
- the first search space set is any search space set in the N search space sets, at least one search space set in the N search space sets includes a first search space, and the first search space is the first search space set.
- the cell schedules a search space for a second cell, the first cell is a secondary cell Scell, and the number of PDCCH candidates in the second search space set is less than or equal to the maximum number of PDCCH candidates supported by the terminal.
- a communication device in a third aspect, includes a processor, a memory, and a program or instruction that is stored on the memory and can run on the processor, and the program or instruction is executed by the processor.
- a readable storage medium is provided, and a program or instruction is stored on the readable storage medium, and the program or instruction implements the steps of the method described in the first aspect when the program or instruction is executed by a processor.
- an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a network device program or instruction to achieve the following: The method described in one aspect.
- configuration information is transmitted, and the configuration information is used to allocate N search space sets; when the number of PDCCH candidates in the first search space set is greater than the maximum number of PDCCH candidates supported by the terminal, the first search is discarded Part or all of the PDCCH candidates in at least one search space in the space set are used to obtain a second search space set; DCI is transmitted on the second search space set; wherein, the first search space set is any of the N search space sets.
- a search space set, at least one search space set in the N search space sets includes a first search space, the first search space is a search space for a first cell to schedule a second cell, and the first cell is a secondary cell Scell
- the number of PDCCH candidates in the second search space set is less than or equal to the maximum number of PDCCH candidates supported by the terminal. In this way, cross-carrier scheduling is implemented on the Scell, which can solve the problem of the limited capacity of the PCell control channel and reduce the PDCCH overhead of the PCell.
- Figure 1 is a structural diagram of a network system applicable to an embodiment of the present application
- Figure 2 is a schematic diagram of PDCCH candidate mapping rules
- FIG. 3 is a flowchart of a DCI transmission method provided by an embodiment of the present application.
- FIG. 4a is one of example diagrams of the maximum number of cross-carrier PDCCH candidates corresponding to the Pcell scheduled by the first cell in a DCI transmission method provided by an embodiment of the present application;
- 4b is the second example diagram of the maximum number of cross-carrier PDCCH candidates corresponding to the Pcell scheduled by the first cell in a DCI transmission method provided by an embodiment of the present application;
- FIG. 5a is the third example diagram of the maximum number of cross-carrier PDCCH candidates corresponding to the first cell scheduling Pcell in a DCI transmission method provided by an embodiment of the present application;
- 5b is the fourth example diagram of the maximum number of cross-carrier PDCCH candidates corresponding to the Pcell scheduled by the first cell in a DCI transmission method provided by an embodiment of the present application;
- FIG. 6 is one of the example diagrams of overbooked cells in a DCI transmission method provided by an embodiment of the present application.
- FIG. 7 is a second example diagram of an over-subscribed cell in a DCI transmission method provided by an embodiment of the present application.
- FIG. 8 is the third diagram of an example of an oversubscribed cell in a DCI transmission method provided by an embodiment of the present application.
- FIG. 9 is the fourth diagram of an example of an over-subscribed cell in a DCI transmission method provided by an embodiment of the present application.
- FIG. 10 is the fifth example diagram of an over-subscribed cell in a DCI transmission method provided by an embodiment of the present application.
- FIG. 11 is one of exemplary diagrams of SS discarding in a DCI transmission method provided by an embodiment of the present application.
- FIG. 12 is a second example diagram of SS discarding in a DCI transmission method provided by an embodiment of the present application.
- FIG. 13 is the third diagram of an example of SS discarding in a DCI transmission method provided by an embodiment of the present application.
- FIG. 14 is a fourth diagram of an example of SS discarding in a DCI transmission method provided by an embodiment of the present application.
- FIG. 15 is a structural diagram of a DCI transmission device provided by an embodiment of the present application.
- FIG. 16 is a structural diagram of a communication device provided by an embodiment of the present application.
- FIG. 17 is a structural diagram of a terminal provided by an embodiment of the present application.
- FIG. 18 is a structural diagram of a network device provided by an embodiment of the present application.
- first and second in the specification and claims of this application are used to distinguish similar objects, but not to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first” and “second” It is usually one type, and the number of objects is not limited.
- the first object may be one or more.
- “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the associated objects before and after are in an "or” relationship.
- LTE Long Term Evolution
- LTE-A Long Term Evolution-Advanced
- CDMA Code Division Multiple Access
- TDMA Time Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA Single-carrier Frequency-Division Multiple Access
- system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used for the aforementioned systems and radio technologies as well as other systems and radio technologies.
- NR New Radio
- 6G 6th Generation
- Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application can be applied.
- the wireless communication system includes a terminal 11 and a network device 12.
- the terminal 11 may also be referred to as a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer or a personal digital device.
- UE User Equipment
- PDA Personal Digital Assistant
- handheld computer netbook, ultra-mobile personal computer (UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or in-vehicle device (VUE), pedestrian terminal (PUE) and other terminal side devices
- UMPC ultra-mobile personal computer
- MID mobile Internet device
- Wearable Device Wearable Device
- VUE in-vehicle device
- PUE pedestrian terminal
- other terminal side devices wearable devices include: bracelets, earphones, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.
- the network device 12 may be a base station or a core network, where the base station may be called Node B, Evolved Node B, Access Point, Base Transceiver Station (BTS), radio base station, radio transceiver, basic service set (Basic Service Set, BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, Transmit and Receive Transmitting Receiving Point (TRP) or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiments of this application, only NR is used. The base station in the system is taken as an example, but the specific type of the base station is not limited.
- the number of PDCCH candidates/CCEs changes between time slots. Therefore, the number of PDCCH candidates/CCEs that allow the network device to configure each slot or the first monitoring span (span) of each slot for the UE exceeds the capability limit of the UE. In the embodiment of the present application, it may be referred to as overbooking. Based on this configuration, for each slot or the first span of each slot, the UE and network equipment map the PDCCH candidate in each slot according to the following mapping rules/sequence:
- the monitoring time configuration of CSS, USS#1, and USS#2 is as follows. For slots 1, 5, and 9 after CSS and USS#1 are mapped, USS#2 cannot be further mapped, which means that the user's ability is exceeded and USS#2 cannot be further mapped. .
- the downlink bandwidth part Downlink Bandwidth Part, DL BWP
- SCS configuration ⁇ ⁇ ⁇ 0,1,2,3 ⁇
- DL BWP with SCS configuration ⁇ 0,1,2,3 ⁇ the maximum number of non-overlapping CCEs per time slot for:
- the time granularity of PDCCH monitoring is changed from slot to span granularity with (x, y) as a combination, where x is two The minimum time interval (number of symbols) of the start symbol of a span, and y is the maximum time that the span can last.
- DL BWP with SCS configuration ⁇ 0,1 ⁇ the maximum number of monitored PDCCH candidates in the span of (x, y) for:
- DL BWP with SCS configuration ⁇ 0,1 ⁇ the maximum number of non-overlapping CCEs in the span of the combination (x, y) for:
- the network side ensures that the number of blind PDCCH candidates and the maximum number of non-overlapping CCEs do not exceed the maximum number of blind detections supported by the UE and the maximum number of channel estimates.
- PCells are generally deployed in low frequency band carriers.
- low-band carriers have insufficient bandwidth and have been deployed in large numbers to other series, such as Long Term Evolution (LTE).
- LTE Long Term Evolution
- the high-frequency carrier can be configured as an SCell and the PCell can be scheduled through the SCell to solve the problem of the limited capacity of the PCell control channel and reduce the control channel PDCCH overhead.
- the proposal of this application is proposed.
- FIG. 3 is a flowchart of a DCI transmission method provided by an embodiment of the present application. The method is applied to a terminal or a network device. As shown in FIG. 3, it includes the following steps:
- Step 301 Transmit configuration information, where the configuration information is used to allocate N search space sets, where N is a positive integer;
- Step 302 When the number of PDCCH candidates in the first search space set is greater than the maximum number of PDCCH candidates supported by the terminal, discard part or all of the PDCCH candidates in at least one search space in the first search space set to obtain a second search space set ;
- Step 303 Transmit DCI on the second search space set
- the first search space set is any search space set in the N search space sets, at least one search space set in the N search space sets includes a first search space, and the first search space is the first search space set.
- the cell schedules a search space for a second cell, the first cell is a secondary cell Scell, and the number of PDCCH candidates in the second search space set is less than or equal to the maximum number of PDCCH candidates supported by the terminal.
- the aforementioned N search space sets can be understood as search space sets corresponding to N cells, where the search space set on each cell includes at least one search space.
- the search space can be divided into many different types according to the scheduling mode. For example, it can include the above-mentioned first search space, and can also include other search spaces, such as the search space of Scell scheduling Pcell, the search space of Pcell self-scheduling, and Scell self-scheduling search space.
- the search space for Scell scheduling Pcell can be called SP-CR-SS
- the search space for Pcell self scheduling can be called P-Self-SS
- the search space for Scell self scheduling can be called O-self-SS.
- the search space for Scell scheduling other Scells can be called O-otherS-SS. It should be understood that each search space set may include at least one of the above search spaces, and the types of search spaces included in different search space sets may be the same or different, which is not further limited herein.
- the second cell may be an Scell or a Pcell, and the number of the first cells may be one or more, and there may be one or more first cells that schedule the Pcell.
- the foregoing first search space may include SP-CR-SS and O-otherS-SS.
- the number of PDCCH candidates in the first search space set is greater than the maximum number of PDCCH candidates supported by the terminal, which can be understood as the cell configuring the first search space set to support overbooking.
- the search space set of one or more cells may be configured as the aforementioned first search space set.
- one or more cells may be configured to support overbooking.
- the PCell when one cell is configured to support overbooking, the PCell can be configured to support overbooking, and the first cell can also be configured to support overbooking.
- the cells that support overbooking may or may not include Pcell. No further restrictions are made here.
- the number of PDCCH candidates mentioned above can be understood as the number of blind detection or the number of CCEs.
- the above transmission of DCI may be understood as receiving DCI or sending DCI.
- the network device sends DCI on the second search space set, and the terminal receives DCI on the second search space set.
- the terminal may also be referred to as a user.
- receiving DCI can be understood as blind detection of DCI.
- blind decoding can be performed on PDCCH candidates in the second search space set to demodulate scheduled control information.
- configuration information is transmitted, and the configuration information is used to allocate N search space sets; when the number of PDCCH candidates in the first search space set is greater than the maximum number of PDCCH candidates supported by the terminal, the first search is discarded Part or all of the PDCCH candidates in at least one search space in the space set are used to obtain a second search space set; DCI is transmitted on the second search space set; wherein, the first search space set is any of the N search space sets.
- a search space set, at least one search space set in the N search space sets includes a first search space, the first search space is a search space for a first cell to schedule a second cell, and the first cell is a secondary cell Scell
- the number of PDCCH candidates in the second search space set is less than or equal to the maximum number of PDCCH candidates supported by the terminal. In this way, cross-carrier scheduling is implemented on the Scell, which can solve the problem of the limited capacity of the PCell control channel and reduce the PDCCH overhead of the PCell.
- the configuration information is also used to allocate a corresponding number of PDCCH candidates for each search space set.
- the maximum number of PDCCH candidates supported by the terminal includes at least one of the following:
- the maximum number of PDCCH candidates corresponding to Scells other than the first cell scheduled by the first cell is 0.
- the above X can be understood as the maximum number of self-scheduled PDCCH candidates for each time unit on the Pcell.
- the time unit can be understood as a slot or a span.
- the above Y includes any one of the following:
- the first time unit is: the time unit in the first cell subcarrier interval SCS
- the second time unit is: the time unit in the Pcell SCS.
- the P satisfies at least one of:
- the third search space is a search space for Scell scheduling Pcell.
- the number of PDCCH candidates belonging to the Pcell in the third search space can be understood as: the SP-CR-SS is included in the share of the blind detection of the Pcell.
- the number of PDCCH candidates in the first search space and the number of PDCCH candidates belonging to the first cell can be understood as: the SP-CR-SS is calculated as the share of the first cell.
- the number of PDCCH candidates executed by the terminal does not exceed the maximum number of PDCCH candidates supported by the terminal.
- the number of PDCCH candidates in the second search space set is less than or equal to the maximum number of PDCCH candidates supported by the terminal, and includes at least one of the following:
- the number of PDCCH candidates in the second search space in each second time unit is less than or equal to the X, and the second search space is a search space self-scheduled by the Pcell;
- the number of PDCCH candidates in the third search space belongs to the number of PDCCH candidates in the Pcell, the number of PDCCH candidates in the third search space in each second time unit is less than or equal to the first value;
- the number of PDCCH candidates in the third search space belongs to the number of PDCCH candidates in the first cell
- the number of PDCCH candidates in the third search space in each first time unit is less than or equal to the second value ;
- the first time unit is: the time unit in the SCS of the first cell
- the second time unit is: the time unit in the Pcell SCS
- the third search space is the search of the Scell scheduling Pcell space.
- the foregoing first value satisfies at least one of the following:
- the first value is (2 ⁇ )*Y, where: ⁇ 1 is PCell SCS, ⁇ 2 is the first cell SCS;
- the first value is the Y.
- the foregoing second value satisfies at least one of the following:
- the second value is the Y
- the second value is in, ⁇ 1 is the PCell SCS, and ⁇ 2 is the first cell SCS.
- the SP-CR-SS when the SP-CR-SS is included in the Pcell blind detection share, if the slot or span uses the SCS of the PCell, it includes the following situations:
- the SP-CR-SS does not exceed Y.
- SP-CR-SS When SP-CR-SS is included in scheduling Scell blind inspection share, if slot or span uses SCell SCS, it includes the following situations:
- Y is the maximum number of PDCCH candidates for each slot or each span of the SCS using scheduling Scell on the scheduling Scell, SP-CR-SS does not exceed Y;
- the Pcell corresponding to the second search space set satisfies at least one of the following:
- the sum of the number of PDCCH candidates in the second search space and the number of PDCCH candidates in the third search space is less than or equal to X+(2 ⁇ )*Y;
- the sum of the number of PDCCH candidates in the third search space and the number of PDCCH candidates in the second search space is less than or equal to X +Y;
- the sum of the number of PDCCH candidates in the first search space and the number of PDCCH candidates in the second search space is less than or equal to the P;
- ⁇ 1 is the PCell SCS
- ⁇ 2 is the first cell SCS
- the first time unit is: the time unit in the first cell SCS
- the second time unit is: the time in the Pcell SCS Unit
- the second search space is a search space for Pcell self-scheduled
- the third search space is a search space for Scell-scheduled Pcell.
- the blind detection of SP-CR-SS is counted as part of the blind detection budget of the Pcell, which can be understood as dividing the blind detection resources based on the scheduled cell.
- This division method is simple; and the subsequent Pcell can be used. Perform overbooking to reduce the user blocking rate when scheduling Pcell.
- the second search space set corresponding to the first cell satisfies at least one of the following:
- the number of PDCCH candidates in the second search space is less than or equal to the P;
- the number of PDCCH candidates in the third search space belongs to the number of PDCCH candidates in the first cell
- the number of PDCCH candidates in the third search space is less than or equal to the Y and meets a preset condition
- the second search space is a search space for Pcell self-scheduled
- the third search space is a search space for Scell-scheduled Pcell.
- the blind detection of SP-CR-SS is counted as part of the blind detection budget of scheduling scell, which can be understood as the division of blind detection resources based on the scheduling cell.
- This division method is flexible; and therefore, it can be performed for Scell subsequently Overbooking reduces the user blocking rate of scheduling scell.
- the preset condition includes at least one of the following:
- the first time unit is: the time unit in the SCS of the first cell
- the second time unit is: the time unit in the Pcell SCS.
- the total number of target PDCCH candidates is the sum of the number of PDCCH candidates in each search space in the target time unit in the M search spaces, and the M search spaces are the set of first search spaces corresponding to the target cell.
- the target time is a time unit over which the target cell is over-booked.
- the network device can ensure that the total number of PDCCH candidates in all search spaces in each time unit of the cell does not exceed the number of PDCCH candidates supported in each time unit of the cell.
- the maximum number of PDCCH candidates On a cell that supports overbooking, if the total number of PDCCH candidates configured in all search spaces within a predetermined time unit exceeds the maximum number of PDCCH candidates supported by the cell in the time unit, the number of PDCCH candidates can be discarded according to a certain discarding rule. Until, the total number of PDCCH candidates in all search spaces in the over-predetermined time unit exceeds the maximum number of PDCCH candidates supported by the cell in the time unit.
- the aforementioned target cell is the first cell or Pcell.
- overbooking can be performed on Scell or overbooking on Pcell.
- the time length of the aforementioned target time unit is determined according to the SCS of the target cell. For example, when the PCell supports oversubscription of the number of PDCCH candidates, the SCS of the PCell is used to determine the corresponding time length of the slot and/or span that supports the oversubscription. When the number of PDCCH candidates supported by the first cell is oversubscribed, the SCS of the first cell is used to determine the corresponding time length of the slot and/or span that supports the oversubscription.
- the priority of each search space in the first search space set corresponding to the Pcell satisfies any one of the following:
- the priority of the user-specific search space USS self-scheduled by PCell is higher than the priority of the third search space and lower than the priority of the public search space CSS self-scheduled by Pcell;
- the third search space is higher than the priority of the USS self-scheduled by the PCell and lower than the priority of the USS self-scheduled by the PCell;
- the third search space is a search space for Scell scheduling Pcell.
- the search space for Scell scheduling Pcell is USS. It should be noted that when there are multiple Scells that can schedule Pcells across carriers, the priority of each cell and the priority of each cell can be defined. For example, in a case where there are L1 first cells, the priority of the L1 first cells meets at least one of the following:
- the priority of the first cell of the first index value is higher than the priority of the first cell of the second index value, and the first index value is greater than or less than the second index value;
- the priority of the third cell is higher than the priority of cells other than the third cell in the L1 first cells;
- the priority of the third cell of the third index value is higher than the priority of the third cell of the fourth index value, and the third index value is greater than or less than the fourth index value;
- L1 is an integer greater than 1
- the third cell is a cell that simultaneously schedules Pcell and Scell among the L1 first cells.
- the priority of each Scell can be understood as the priority of each Scell scheduling Pcell, and can also be understood as the priority of the search space of each Scell scheduling Pcell.
- an SCell with a small SCell index has a high priority
- an SCell with a third cell characteristic has a high priority; if there are multiple SCells with this characteristic, an SCell with a small SCell index value The priority is high.
- the priority of each search space in the first search space set corresponding to the Pcell satisfies: Pcell self-scheduled CSS is greater than that of the first cell USS.
- a small USS index value has a high priority or a USS with a characteristic T has a high priority; if there are multiple USSs with the same index value, a cell with a small index has a higher priority, or a The priority of the SCell with the three-cell characteristic is high; if there are multiple SCells with this characteristic, the SCell with a small SCell index value has a higher priority.
- the L2 USS priorities satisfy at least one of the following:
- the priority of the first USS is higher than the priority of the second USS, and the index value of the first USS is larger or smaller than the index value of the second USS;
- the priority of the third USS is higher than the priority of the fourth USS, the third USS and the fourth USS are the same USS with the same index value of the L2 USS, and the cell index corresponding to the third USS is greater than or less than The cell index corresponding to the fourth USS;
- the priority of the USS corresponding to the M third cells is higher than the priority of the USS corresponding to the fourth cell.
- the USS corresponding to the fourth cell is a USS other than the USS corresponding to the M third cells among the L2 USSs;
- the fifth USS is greater than the priority of the sixth USS
- the fifth USS and the sixth USS are both USSs in the USS corresponding to the M third cells
- the cell index corresponding to the fifth USS is greater than or Is smaller than the cell index corresponding to the sixth USS;
- L2 is an integer greater than 1.
- the discarding rule for discarding part or all of the PDCCH candidates in the at least one search space includes:
- the discarding rule further includes:
- the PDCCH candidates in the search space are discarded in order of priority from low to high.
- the discarding rule when the target cell is a Pcell, the discarding rule further includes:
- the discarding priority of the search space in the third time unit is greater than the discarding priority of the search space in the fourth time unit, wherein the third time unit and the fourth time unit are both time units in the target time unit, and The third time unit is earlier or later than the fourth time unit.
- the target cell is a PCell
- one slot and/or one span of the SCell corresponds to one or more slots and/or one or more spans of the PCell
- the priority of the smaller SS ID is higher.
- the user will give up all the PDCCH candidates in the SS ID in descending order of the SS ID until the number of blind detections does not exceed The maximum number of blind checks supported by the UE.
- the user first uses the PDCCH candidate in the SS as a unit, and then uses the SS as a unit to give up the number of blind checks.
- it can include the following abandonment steps including:
- Step 1 Taking the PDCCH candidates in the SS as the unit, the priority of PDCCH candidates with high or low aggregation level is high, and the user will give up the PDCCH candidates in the order of high to low or low to high required by the PDCCH candidates. PDCCH candidates in the SS ID.
- Step 2 If the discarding of all PDCCH candidates in the SS still exceeds the maximum number of blind detections supported by the UE, then use the SS as the unit and follow the step 1 method to discard the candidates in the descending order of the SS ID. Repeat steps 1 and 2 until the number of blind checks does not exceed the maximum number of blind checks supported by the UE.
- the target cell is a PCell
- the following methods can be used to discard PDCCH candidates:
- Method 1 The order of priority is: use the method corresponding to step 1 and step 2 above on the earlier or later overlapped 1 slot and/or 1 span, and use the PDCCH candidate in the SS or SS as the unit Abandon the blind inspection. If the maximum number of blind inspections supported by the user is still exceeded after abandoning the blind inspection, then the next or previous slot and/or the next or previous span will follow the steps 1 and 2 above to perform the blind inspection abandon. Until the number of blind checks does not exceed the maximum number of blind checks supported by the UE.
- Method 2 The order of priority is: use the corresponding method of step 1 and step 2 on all overlapped slots and/or spans to perform blind detection and abandon with the PDCCH candidate in the SS or SS as the unit.
- the SS ID and/or multiple PDCCH candidates have the same aggregation level, and the smaller or larger slot index/span index has a higher priority.
- the SS when the target cell is the first cell, in each slot or each span of the SCell, the SS is the unit, and the SS is the unit.
- the priority of the smaller SS ID is higher, and the user All PDCCH candidates in the SS ID are discarded in the descending order of the SS ID until the number of blind detections does not exceed the maximum number of blind detections supported by the UE.
- the user first uses the PDCCH candidate in the SS as a unit, and then uses the SS as a unit to give up the number of blind checks.
- it can include the following abandonment steps including:
- Step 3 Taking the PDCCH candidates in the SS as the unit, the priority of PDCCH candidates with high or low aggregation levels is high, and the user will give up the PDCCH candidates in the order of high to low or low to high required to form the PDCCH candidates. PDCCH candidates in the SS ID.
- Step 4 If the discarding of all PDCCH candidates in the SS still exceeds the maximum number of blind detections supported by the UE, then the SS is used as a unit and the SS ID is in descending order, and the candidates are discarded according to the method in step 1. Repeat steps 3 and 4 until the number of blind checks does not exceed the maximum number of blind checks supported by the UE.
- the DCI transmission method provided by the embodiments of this application can support self-scheduling of one cell while being scheduled by another cell, such as monitoring the scheduling DCI of PCell and SCell to PCell, and assigning the largest PDCCH candidate for UE blind detection between the two scheduling cells
- the maximum number of non-overlapping CCEs, etc. can help network equipment make maximum use of user blind detection capabilities and avoid multi-user congestion.
- this application provides a method for the user to perform blind detection and discarding on a cell that can support overbooking when the maximum number of blind detections exceeds the user's ability, and to prioritize important blind detections to ensure network performance.
- the cell that supports PDCCH overbooking is a scheduled cell, which specifically includes the following situations:
- Case 1 When the Pcell does not have self-carrier scheduling, the case of supporting overbooking will be described with reference to FIG. 6 to FIG. 8.
- the cell that supports overbooking is secondary cell 1.
- the cells that support overbooking are secondary cell 1 and secondary cell 2.
- the cell that supports overbooking is the secondary cell 1.
- Case 2 When the Pcell has self-carrier scheduling, the case of supporting overbooking will be described with reference to FIG. 9 to FIG. 10. As shown in Figure 9, when the self-carrier scheduling is the first type of CSS, the cells that support overbooking are the secondary cell 1 and the primary cell. As shown in FIG. 10, when the subcarrier scheduling is USS and/or the second type of CSS, the cell that supports overbooking is the secondary cell 1.
- a cell supporting PDCCH overbooking is a scheduled cell, that is, a Pcell, regardless of whether the Pcell has self-carrier scheduling or not, the cell supporting overbooking is a Pcell.
- the Pcell is added as a cell that supports overbooking.
- the method for the UE to abandon the blind check of the search space includes the following methods:
- Method 1 PCell supports overbooking of blind detection numbers, and the SCS of PCell is used to determine the corresponding slot and/or span time length that supports overbooking.
- one slot of the SCell corresponds to one or more slots of the PCell.
- the maximum number of blind detections supported by the user on the PCell is 2.
- Slot n on the PCell the PCell self-scheduling priority is higher than the SCell cross-carrier scheduling, and the USS that schedules the PCell on the SCell has a large SS ID first. Such as USS#2, then USS#1.
- USS#2 the number of blind detections on the PCell still exceeds 2
- the SS on the PCell is discarded.
- the priority of the USS is lower than that of the CSS, and the priority of the SS with a large SS ID is lower; then use the same method to handle the slot n +1.
- multiple slots of SCell correspond to 1 slot of PCell.
- each USS is used to schedule Pcells.
- the maximum number of blind checks supported by the user on the PCell is 3.
- the SS is discarded in 1 slot of the earliest overlapped Scell, that is, slot n. After the blind check is abandoned, the maximum number of blind checks supported by the user is still exceeded.
- One slot, namely slot(n+1), is then discarded by SS, and the SS with a large SS ID in each slot has a low priority.
- the maximum number of blind detections supported by the user on the PCell is 2. Use the above steps 1 and 2 on all overlapped slots to perform blind detection with SS as the unit. When multiple SSs have the same SS ID , The slot index with a larger slot index has a lower priority.
- Method 2 Use the SCS of the SCell to determine the length of the slot.
- Each slot or each span of the Scell can support overbooking.
- the maximum number of blind detections supported by the user on the SCell is 3.
- the user uses the method corresponding to the above steps 1 and 2 on each slot on the SCell to use the SS as The unit performs blind detection and abandonment, and the priority is defined as Scell self-scheduled CSS>SCell cross-carrier scheduling USS of PCell>Scell self-scheduled USS ⁇ SCell cross-carrier scheduling USS of other SCells, SCells with a small SS ID have a higher priority.
- the execution subject may be a DCI transmission device, or a control module used to execute the DCI transmission method in the DCI transmission device.
- the DCI transmission method performed by the DCI transmission apparatus is taken as an example to illustrate the DCI transmission apparatus provided in the embodiment of the present application.
- FIG. 15 is a structural diagram of a DCI transmission apparatus according to an embodiment of the present application. As shown in FIG. 15, the DCI transmission apparatus 1500 includes:
- the receiving module 1501 is configured to transmit configuration information, where the configuration information is used to allocate N search space sets, where N is a positive integer;
- the discarding module 1502 is configured to discard part or all of the PDCCH candidates in at least one search space in the first search space set when the number of PDCCH candidates in the first search space set is greater than the maximum number of PDCCH candidates supported by the terminal to obtain the second Search space set;
- the detection module 1503 is configured to transmit DCI on the second search space set
- the first search space set is any search space set in the N search space sets, at least one search space set in the N search space sets includes a first search space, and the first search space is the first search space set.
- the cell schedules a search space for a second cell, the first cell is a secondary cell Scell, and the number of PDCCH candidates in the second search space set is less than or equal to the maximum number of PDCCH candidates supported by the terminal.
- the configuration information is also used to allocate a corresponding number of PDCCH candidates for each search space set.
- the maximum number of PDCCH candidates supported by the terminal includes at least one of the following:
- the maximum number of PDCCH candidates corresponding to Scells other than the first cell scheduled by the first cell is 0.
- the Y includes any one of the following:
- the first time unit is: the time unit in the first cell subcarrier interval SCS
- the second time unit is: the time unit in the Pcell SCS.
- the P satisfies at least one of:
- the third search space is a search space for Scell scheduling Pcell.
- the number of PDCCH candidates in the second search space set is less than or equal to the maximum number of PDCCH candidates supported by the terminal, and includes at least one of the following:
- the number of PDCCH candidates in the second search space in each second time unit is less than or equal to the X, and the second search space is a search space self-scheduled by the Pcell;
- the number of PDCCH candidates in the third search space belongs to the number of PDCCH candidates in the Pcell, the number of PDCCH candidates in the third search space in each second time unit is less than or equal to the first value;
- the number of PDCCH candidates in the third search space belongs to the number of PDCCH candidates in the first cell
- the number of PDCCH candidates in the third search space in each first time unit is less than or equal to the second value ;
- the first time unit is: the time unit in the SCS of the first cell
- the second time unit is: the time unit in the Pcell SCS
- the third search space is the search of the Scell scheduling Pcell space.
- the first value satisfies at least one of the following:
- the first value is (2 ⁇ )*Y, where: ⁇ 1 is PCell SCS, ⁇ 2 is the first cell SCS;
- the first value is the Y.
- the second value satisfies at least one of the following:
- the second value is the Y
- the second value is in, ⁇ 1 is the PCell SCS, and ⁇ 2 is the first cell SCS.
- the Pcell corresponding to the second search space set satisfies at least one of the following:
- the sum of the number of PDCCH candidates in the second search space and the number of PDCCH candidates in the third search space is less than or equal to X+(2 ⁇ )*Y;
- the sum of the number of PDCCH candidates in the third search space and the number of PDCCH candidates in the second search space is less than or equal to X +Y;
- the sum of the number of PDCCH candidates in the first search space and the number of PDCCH candidates in the second search space is less than or equal to the P;
- ⁇ 1 is the PCell SCS
- ⁇ 2 is the first cell SCS
- the first time unit is: the time unit in the first cell SCS
- the second time unit is: the time in the Pcell SCS Unit
- the second search space is a search space for Pcell self-scheduled
- the third search space is a search space for Scell-scheduled Pcell.
- the second search space set corresponding to the first cell satisfies at least one of the following:
- the number of PDCCH candidates in the second search space is less than or equal to the P;
- the number of PDCCH candidates in the third search space belongs to the number of PDCCH candidates in the first cell
- the number of PDCCH candidates in the third search space is less than or equal to the Y and meets a preset condition
- the second search space is a search space for Pcell self-scheduled
- the third search space is a search space for Scell-scheduled Pcell.
- the preset condition includes at least one of the following:
- the first time unit is: the time unit in the SCS of the first cell
- the second time unit is: the time unit in the Pcell SCS.
- the second cell is Scell or Pcell.
- the discarding module 1502 is specifically configured to discard part of at least one search space or PDCCH candidates in the first search space set when the total number of target PDCCH candidates is greater than the maximum total number of PDCCH candidates supported by the target cell of the terminal;
- the total number of target PDCCH candidates is the sum of the number of PDCCH candidates in each search space in the target time unit in the M search spaces, and the M search spaces are the set of first search spaces corresponding to the target cell.
- the target time is a time unit over which the target cell is over-booked.
- the target cell is the first cell or Pcell.
- the time length of the target time unit is determined according to the SCS of the target cell.
- the priority of each search space in the first search space set corresponding to the Pcell satisfies any one of the following:
- the priority of the user-specific search space USS self-scheduled by PCell is higher than the priority of the third search space and lower than the priority of the public search space CSS self-scheduled by Pcell;
- the third search space is higher than the priority of the USS self-scheduled by the PCell and lower than the priority of the USS self-scheduled by the PCell;
- the third search space is a search space for Scell scheduling Pcell.
- the priority of the L1 first cells meets at least one of the following:
- the priority of the first cell of the first index value is higher than the priority of the first cell of the second index value, and the first index value is greater than or less than the second index value;
- the priority of the third cell is higher than the priority of cells other than the third cell in the L1 first cells;
- the priority of the third cell of the third index value is higher than the priority of the third cell of the fourth index value, and the third index value is greater than or less than the fourth index value;
- L1 is an integer greater than 1
- the third cell is a cell that simultaneously schedules Pcell and Scell among the L1 first cells.
- the priority of each search space in the first search space set corresponding to the Pcell satisfies: the CSS self-scheduled by the Pcell is greater than the USS of the first cell.
- the L2 USS priorities satisfy at least one of the following:
- the priority of the first USS is higher than the priority of the second USS, and the index value of the first USS is larger or smaller than the index value of the second USS;
- the priority of the third USS is higher than the priority of the fourth USS, the third USS and the fourth USS are the same USS with the same index value of the L2 USS, and the cell index corresponding to the third USS is greater than or less than The cell index corresponding to the fourth USS;
- the priority of the USS corresponding to the M third cells is higher than the priority of the USS corresponding to the fourth cell.
- the USS corresponding to the fourth cell is a USS other than the USS corresponding to the M third cells among the L2 USSs;
- the fifth USS is greater than the priority of the sixth USS
- the fifth USS and the sixth USS are both USSs in the USS corresponding to the M third cells
- the cell index corresponding to the fifth USS is greater than or Is smaller than the cell index corresponding to the sixth USS;
- L2 is an integer greater than 1.
- the priority of each search space in the first search space set corresponding to the first cell satisfies any one of the following:
- the self-scheduled CSS of the first cell is greater than the priority of the USS of the Pcell scheduled by the first cell, and the USS of the Pcell scheduled by the first cell is greater than the priority of the USS of the first cell self-scheduled.
- the priority of the USS self-scheduled by the cell is greater than the priority of the USS for the cross-carrier scheduling Scell of the first cell;
- the self-scheduled CSS of the first cell is greater than the priority of the self-scheduled USS of the first cell
- the self-scheduled USS of the first cell is greater than the priority of the USS of the first cell-scheduled Pcell
- the first The priority of the USS of the cell scheduling Pcell is greater than the priority of the USS of the first cell cross-carrier scheduling Scell
- the self-scheduled CSS of the first cell is greater than the self-scheduled USS of the first cell and the priority of the first search space set.
- the discarding rule for discarding part or all of the PDCCH candidates in the at least one search space includes:
- the discarding rule further includes:
- the PDCCH candidates in the search space are discarded in order of priority from low to high.
- the discarding rule when the target cell is a Pcell, the discarding rule further includes:
- the discarding priority of the search space in the third time unit is greater than the discarding priority of the search space in the fourth time unit, wherein the third time unit and the fourth time unit are both time units in the target time unit, and The third time unit is earlier or later than the fourth time unit.
- the DCI transmission device in the embodiment of the present application may be a device, or a component, integrated circuit, or chip in a terminal.
- the device can be a mobile terminal or a non-mobile terminal.
- the mobile terminal may include but is not limited to the types of the terminal 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television ( Television, TV), teller machines, self-service machines, etc., are not specifically limited in the embodiments of the present application.
- the DCI transmission device in the embodiment of the present application may be a device with an operating system.
- the operating system may be an Android operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.
- the DCI transmission device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment in FIG. 3 and achieve the same technical effect. To avoid repetition, details are not described herein again.
- an embodiment of the present application further provides a communication device 1600, including a processor 1601, a memory 1602, and programs or instructions that are stored on the memory 1602 and run on the processor 1601,
- a communication device 1600 including a processor 1601, a memory 1602, and programs or instructions that are stored on the memory 1602 and run on the processor 1601
- the communication device 1600 is a terminal
- the program or instruction is executed by the processor 1601
- each process of the foregoing DCI transmission method embodiment is implemented, and the same technical effect can be achieved.
- the communication device 1600 is a network device
- the program or instruction is executed by the processor 1601
- each process of the foregoing DCI transmission method embodiment is realized, and the same technical effect can be achieved. To avoid repetition, details are not described herein again.
- FIG. 17 is a schematic diagram of the hardware structure of a terminal that implements each embodiment of the present application.
- the terminal 1700 includes but is not limited to: a radio frequency unit 1701, a network module 1702, an audio output unit 1703, an input unit 1704, a sensor 1705, a display unit 1706, a user input unit 1707, an interface unit 1708, a memory 1709, a processor 1710 and other components.
- the terminal 1700 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 1710 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
- a power source such as a battery
- the terminal structure shown in FIG. 17 does not constitute a limitation on the terminal.
- the terminal may include more or fewer components than shown in the figure, or combine some components, or different component arrangements, which will not be repeated here.
- the input unit 1704 may include a graphics processing unit (GPU) 17041 and a microphone 17042.
- the graphics processor 17041 is paired by the image capture device ( For example, the image data of the still picture or video obtained by the camera) is processed.
- the display unit 1706 may include a display panel 17061, and the display panel 17061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
- the user input unit 1707 includes a touch panel 17071 and other input devices 17072.
- the touch panel 17071 is also called a touch screen.
- the touch panel 17071 may include two parts, a touch detection device and a touch controller.
- Other input devices 17072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
- the radio frequency unit 1701 receives the downlink data from the network device and sends it to the processor 1710 for processing; in addition, it sends the uplink data to the network device.
- the radio frequency unit 1701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
- the memory 1709 can be used to store software programs or instructions and various data.
- the memory 109 may mainly include a storage program or instruction area and a data storage area, where the storage program or instruction area may store an operating system, an application program or instruction required by at least one function (such as a sound playback function, an image playback function, etc.).
- the memory 1709 may include a high-speed random access memory, and may also include a non-volatile memory, where the non-volatile memory may be a read-only memory (Read-Only Memory, ROM) or a programmable read-only memory (Programmable ROM).
- PROM erasable programmable read-only memory
- Erasable PROM EPROM
- Electrically erasable programmable read-only memory Electrically EPROM, EEPROM
- flash memory For example, at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
- the processor 1710 may include one or more processing units; optionally, the processor 1710 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs or instructions, etc.
- the modem processor mainly deals with wireless communication, such as a baseband processor. It can be understood that the foregoing modem processor may not be integrated into the processor 1710.
- the radio frequency unit 1701 is used to transmit configuration information, and the configuration information is used to allocate N search space sets, where N is a positive integer;
- the processor 1710 is configured to, when the number of PDCCH candidates in the first search space set is greater than the maximum number of PDCCH candidates supported by the terminal, discard part or all of the PDCCH candidates in at least one search space in the first search space set to obtain the second Search space set;
- the radio frequency unit 1701 is further configured to transmit DCI on the second search space set;
- the first search space set is any search space set in the N search space sets, at least one search space set in the N search space sets includes a first search space, and the first search space is the first search space set.
- the cell schedules a search space for a second cell, the first cell is a secondary cell Scell, and the number of PDCCH candidates in the second search space set is less than or equal to the maximum number of PDCCH candidates supported by the terminal.
- processor 1710 and radio frequency unit 1701 can implement each process implemented by the terminal in the method embodiment of FIG.
- the embodiment of the present application also provides a network device.
- the network equipment 1800 includes: an antenna 1801, a radio frequency device 1802, and a baseband device 1803.
- the antenna 1801 is connected to the radio frequency device 1802.
- the radio frequency device 1802 receives information through the antenna 1801, and sends the received information to the baseband device 1803 for processing.
- the baseband device 1803 processes the information to be sent and sends it to the radio frequency device 1802, and the radio frequency device 1802 processes the received information and sends it out via the antenna 1801.
- the foregoing frequency band processing device may be located in the baseband device 1803, and the method executed by the network device in the foregoing embodiment may be implemented in the baseband device 1803, which includes a processor 1804 and a memory 1805.
- the baseband device 1803 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board, as shown in FIG.
- the network device shown in the above method embodiment operates.
- the baseband device 1803 may also include a network interface 1806 for exchanging information with the radio frequency device 1802, and the interface is, for example, a common public radio interface (CPRI).
- CPRI common public radio interface
- the network device of the embodiment of the present application further includes: instructions or programs that are stored in the memory 1805 and can run on the processor 1804, and the processor 1804 calls the instructions or programs in the memory 1805 to execute each module shown in FIG. 15
- the embodiment of the present application also provides a readable storage medium with a program or instruction stored on the readable storage medium.
- the program or instruction is executed by a processor, each process of the foregoing DCI transmission method embodiment is realized, and the same can be achieved. In order to avoid repetition, I won’t repeat them here.
- the processor is the processor in the electronic device described in the foregoing embodiment.
- the readable storage medium includes a computer readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks, or optical disks.
- An embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run a network device program or instruction to implement the foregoing transmission method embodiment
- the chip includes a processor and a communication interface
- the communication interface is coupled with the processor
- the processor is used to run a network device program or instruction to implement the foregoing transmission method embodiment
- chips mentioned in the embodiments of the present application may also be referred to as system-level chips, system-on-chips, system-on-chips, or system-on-chips.
- the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. ⁇
- the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a base station, etc.) execute the methods described in the various embodiments of the present application.
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Claims (35)
- 一种控制信息DCI传输方法,包括:传输配置信息,所述配置信息用于分配N个搜索空间集,N为正整数;在第一搜索空间集的物理下行链路控制信道PDCCH候选数大于终端支持的最大PDCCH候选数的情况下,丢弃所述第一搜索空间集中至少一个搜索空间的部分或者全部PDCCH候选,得到第二搜索空间集;在所述第二搜索空间集上传输DCI;其中,所述第一搜索空间集为所述N个搜索空间集中任一个搜索空间集,所述N个搜索空间集中至少一个搜索空间集包括第一搜索空间,所述第一搜索空间为第一小区调度第二小区的搜索空间,所述第一小区为辅小区Scell,所述第二搜索空间集的PDCCH候选数小于或等于所述终端支持的最大PDCCH候选数。
- 根据权利要求1所述的方法,其中,所述配置信息还用于为每一所述搜索空间集分配对应的PDCCH候选数。
- 根据权利要求2所述的方法,其中,终端支持的最大PDCCH候选数包括以下至少一项:主小区Pcell自调度对应的最大PDCCH候选数X;所述第一小区调度Pcell对应的最大跨载波PDCCH候选数Y;在Pcell支持的最大PDCCH候选数P;所述第一小区支持的最大PDCCH候选数S;所述第一小区自调度对应的最大PDCCH候选数F;所述第一小区调度除第一小区之外的Scell对应的最大PDCCH候选数O。
- 根据权利要求3所述的方法,其中,所述Y包括以下任一项:所述第一小区上使用第一时间单元的最大PDCCH候选数;所述第一小区上使用第二时间单元的最大PDCCH候选数;其中,所述第一时间单元为:所述第一小区子载波间隔SCS中的时间单元,所述第二时间单元为:所述Pcell SCS中的时间单元。
- 根据权利要求4所述的方法,其中,所述P满足至少一项:在第三搜索空间的PDCCH候选数归属于所述Pcell的PDCCH候选数,且所述Y为所述第一小区上使用第一时间单元的最大PDCCH候选数的情况下,P=X+(2 μ)*Y,其中, μ 1为PCell SCS,μ 2为所述第一小区SCS;在所述第三搜索空间的PDCCH候选数归属于所述Pcell的PDCCH候选数,且所述Y为所述第一小区上使用第二时间单元的最大PDCCH候选数的情况下,P=X+Y;在所述第三搜索空间的PDCCH候选数归属于所述第一小区的PDCCH候选数的情况下,P=X;其中,所述第三搜索空间为Scell调度Pcell的搜索空间。
- 根据权利要求3所述的方法,其中,所述第二搜索空间集的PDCCH候选数小于或等于所述终端支持的最大PDCCH候选数,包括以下至少一项:第二搜索空间在每一第二时间单元内的PDCCH候选数小于或等于所述X,所述第二搜索空间为Pcell自调度的搜索空间;在第三搜索空间的PDCCH候选数归属于所述Pcell的PDCCH候选数的情况下,所述第三搜索空间在每一所述第二时间单元内的PDCCH候选数小于或等于第一值;在所述第三搜索空间的PDCCH候选数归属于所述第一小区的PDCCH候选数的情况下,所述第三搜索空间在每一第一时间单元内的PDCCH候选数小于或等于第二值;其中,所述第一时间单元为:所述第一小区SCS中的时间单元,所述第二时间单元为:所述Pcell SCS中的时间单元,所述第三搜索空间为Scell调度Pcell的搜索空间。
- 根据权利要求3所述的方法,其中,在所述Pcell支持PDCCH候选数超额预定的情况下,所述Pcell对应所述第二搜索空间集满足以下至少一项:在所述Y为所述第一小区上使用第一时间单元的最大PDCCH候选数的情况下,第二搜索空间的PDCCH候选数与第三搜索空间的PDCCH候选数之和小于或等于X+(2 μ)*Y;在所述Y为所述Pcell上使用第二时间单元的最大PDCCH候选数的情况下,所述第三搜索空间的PDCCH候选数与所述第二搜索空间的PDCCH候选数之和小于或等于X+Y;所述第一搜索空间的PDCCH候选数与所述第二搜索空间的PDCCH候选数之和小于或等于所述P;
- 根据权利要求3所述的方法,其中,在所述第一小区支持PDCCH候选数超额预定的情况下,所述第一小区对应的所述第二搜索空间集满足以下至少一项:第二搜索空间的PDCCH候选数小于或等于所述P;在第三搜索空间的PDCCH候选数归属于所述第一小区的PDCCH候选数的情况下,所述第三搜索空间的PDCCH候选数小于或等于所述Y,且满足预设条件;其中,所述第二搜索空间为Pcell自调度的搜索空间,所述第三搜索空间为Scell调度Pcell的搜索空间。
- 根据权利要求1所述的方法,其中,所述第二小区为Scell或者Pcell。
- 根据权利要求1所述的方法,其中,所述在第一搜索空间集的物理下行链路控制信道PDCCH候选数大于终端支持的最大PDCCH候选数的情况下,丢弃所述第一搜索空间集中至少一个搜索空间的部分或者全部PDCCH候选包括:在目标PDCCH候选总数大于所述终端支持目标小区的最大PDCCH候选总数的情况下,丢弃所述第一搜索空间集中至少一个搜索空间的部分或者全部PDCCH候选;其中,所述目标PDCCH候选总数为M个搜索空间中各搜索空间在目标时间单元内的PDCCH候选数之和,所述M个搜索空间为所述目标小区对应的所述第一搜索空间集中的搜索空间,所述目标时间为所述目标小区在超额预定的时间单元。
- 根据权利要求13所述的方法,其中,所述目标小区为第一小区或Pcell。
- 根据权利要求13所述的方法,其中,所述目标时间单元的时间长度根据所述目标小区的SCS确定。
- 根据权利要求13所述的方法,其中,在所述目标小区为Pcell的情况下,所述Pcell对应的第一搜索空间集中各搜索空间的优先级满足以下任一项:PCell自调度的用户特定的搜索空间USS的优先级高于第三搜索空间的优先级,且低于Pcell自调度的公共搜索空间CSS的优先级;所述第三搜索空间高于PCell自调度的USS的优先级,且低于PCell自调度的USS的优先级;其中,所述第三搜索空间为Scell调度Pcell的搜索空间。
- 根据权利要求16所述的方法,其中,在存在L1个所述第一小区的情况下,所述L1个第一小区的优先级满足以下至少一项:第一索引值的第一小区的优先级高于第二索引值的第一小区的优先级,所述第一索引值大于或小于所述第二索引值;第三小区的优先级高于L1个第一小区中除所述第三小区之外的小区的优先级;第三索引值的第三小区的优先级高于第四索引值的第三小区的优先级,所述第三索引值大于或小于所述第四索引值;其中,L1为大于1的整数,所述第三小区为所述L1个第一小区中同时调度Pcell和Scell的小区。
- 根据权利要求13所述的方法,其中,在所述目标小区为Pcell的情况下,所述Pcell对应的所述第一搜索空间集中各搜索空间的优先级满足:Pcell自调度的CSS大于第一小区的USS。
- 根据权利要求18所述的方法,其中,在存在L2个所述USS的情况下,所述L2个USS优先级满足以下至少一项:第一USS的优先级高于第二USS的优先级,所述第一USS的索引值大于或小于所述第二USS的索引值;第三USS的优先级高于第四USS的优先级,所述第三USS和所述第四USS为所述L2个USS索引值相同USS,且所述第三USS对应的小区索引大于或小于所述第四USS对应的小区索引;M个第三小区对应的USS的优先级高于第四小区对应的USS的优先级,所述第三小区为所述L2个USS对应的第一小区中,同时调度Pcell和Scell 的小区,所述第四小区对应的USS为所述L2个USS中,除所述M个第三小区对应的USS之外的USS;第五USS大于第六USS的优先级,所述第五USS和所述第六USS均为所述M个第三小区对应的USS中的USS,且所述第五USS对应的小区索引大于或小于所述第六USS对应的小区索引;其中,L2大于1的整数。
- 根据权利要求13所述的方法,其中,在所述目标小区为第一小区的情况下,所述第一小区对应的第一搜索空间集中各搜索空间的优先级满足以下任一项:所述第一小区自调度的CSS大于所述第一小区调度Pcell的USS的优先级,所述第一小区调度Pcell的USS大于所述第一小区自调度的USS的优先级,所述第一小区自调度的USS大于所述第一小区跨载波调度Scell的USS的优先级;所述第一小区自调度的CSS大于所述第一小区自调度的USS的优先级,所述第一小区自调度的USS大于所述第一小区调度Pcell的USS的优先级,所述第一小区调度Pcell的USS大于所述第一小区跨载波调度Scell的USS的优先级;所述第一小区自调度的CSS大于所述第一小区自调度的USS和所述第一搜索空间集的优先级。
- 根据权利要求13所述的方法,其中,丢弃所述至少一个搜索空间的部分或者全部PDCCH候选的丢弃规则包括:按照搜索空间的索引从大到小或者从小到大的顺序,依次丢弃搜索空间中部分或者全部PDCCH候选。
- 根据权利要求21所述的方法,其中,所述丢弃规则还包括:以搜索空间中PDCCH候选为单位,按照优先级从低到高的顺序依次丢弃PDCCH候选。
- 根据权利要求21所述的方法,其中,在所述目标小区为Pcell的情况下,所述丢弃规则还包括:第三时间单元内搜索空间的丢弃优先级大于第四时间单元内搜索空间的 丢弃优先级,其中,所述第三时间单元和第四时间单元均为所述目标时间单元中的时间单元,且所述第三时间单元早于或晚于所述第四时间单元。
- 一种控制信息DCI传输装置,包括:接收模块,用于传输配置信息,所述配置信息用于分配N个搜索空间集,N为正整数;丢弃模块,用于在第一搜索空间集的物理下行链路控制信道PDCCH候选数大于终端支持的最大PDCCH候选数的情况下,丢弃所述第一搜索空间集中至少一个搜索空间的部分或者全部PDCCH候选,得到第二搜索空间集;检测模块,用于在所述第二搜索空间集上传输DCI;其中,所述第一搜索空间集为所述N个搜索空间集中任一个搜索空间集,所述N个搜索空间集中至少一个搜索空间集包括第一搜索空间,所述第一搜索空间为第一小区调度第二小区的搜索空间,所述第一小区为辅小区Scell,所述第二搜索空间集的PDCCH候选数小于或等于所述终端支持的最大PDCCH候选数。
- 根据权利要求24所述的DCI传输装置,其中,所述配置信息还用于为每一所述搜索空间集分配对应的PDCCH候选数。
- 根据权利要求25所述的DCI传输装置,其中,终端支持的最大PDCCH候选数包括以下至少一项:主小区Pcell自调度对应的最大PDCCH候选数X;所述第一小区调度Pcell对应的最大跨载波PDCCH候选数Y;在Pcell支持的最大PDCCH候选数P;所述第一小区支持的最大PDCCH候选数S;所述第一小区自调度对应的最大PDCCH候选数F;所述第一小区调度除第一小区之外的Scell对应的最大PDCCH候选数O。
- 根据权利要求26所述的DCI传输装置,其中,所述Y包括以下任一项:所述第一小区上使用第一时间单元的最大PDCCH候选数;所述第一小区上使用第二时间单元的最大PDCCH候选数;其中,所述第一时间单元为:所述第一小区子载波间隔SCS中的时间单元,所述第二时间单元为:所述Pcell SCS中的时间单元。
- 根据权利要求26所述的DCI传输装置,其中,所述第二搜索空间集的PDCCH候选数小于或等于所述终端支持的最大PDCCH候选数,包括以下至少一项:第二搜索空间在每一第二时间单元内的PDCCH候选数小于或等于所述X,所述第二搜索空间为Pcell自调度的搜索空间;在第三搜索空间的PDCCH候选数归属于所述Pcell的PDCCH候选数的情况下,所述第三搜索空间在每一所述第二时间单元内的PDCCH候选数小于或等于第一值;在所述第三搜索空间的PDCCH候选数归属于所述第一小区的PDCCH候选数的情况下,所述第三搜索空间在每一第一时间单元内的PDCCH候选数小于或等于第二值;其中,所述第一时间单元为:所述第一小区SCS中的时间单元,所述第二时间单元为:所述Pcell SCS中的时间单元,所述第三搜索空间为Scell调度Pcell的搜索空间。
- 根据权利要求26所述的DCI传输装置,其中,在所述Pcell支持PDCCH候选数超额预定的情况下,所述Pcell对应所述第二搜索空间集满足以下至少一项:在所述Y为所述第一小区上使用第一时间单元的最大PDCCH候选数的情况下,第二搜索空间的PDCCH候选数与第三搜索空间的PDCCH候选数之和小于或等于X+(2 μ)*Y;在所述Y为所述Pcell上使用第二时间单元的最大PDCCH候选数的情况下,所述第三搜索空间的PDCCH候选数与所述第二搜索空间的PDCCH候选数之和小于或等于X+Y;所述第一搜索空间的PDCCH候选数与所述第二搜索空间的PDCCH候选数之和小于或等于所述P;
- 根据权利要求26所述的DCI传输装置,其中,在所述第一小区支持PDCCH候选数超额预定的情况下,所述第一小区对应的所述第二搜索空间集满足以下至少一项:第二搜索空间的PDCCH候选数小于或等于所述P;在第三搜索空间的PDCCH候选数归属于所述第一小区的PDCCH候选数的情况下,所述第三搜索空间的PDCCH候选数小于或等于所述Y,且满足预设条件;其中,所述第二搜索空间为Pcell自调度的搜索空间,所述第三搜索空间为Scell调度Pcell的搜索空间。
- 一种通信设备,包括:存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如权利要求1至23中任一项所述的控制信息DCI传输方法中的步骤。
- 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指被处理器执行时实现如权利要求1至23中任一项所述的控制信息DCI传输方法中的步骤。
- 一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行网络设备程序或指令,实现如权利要求1至23中任一项所述的控制信息DCI传输方法中的步骤。
- 一种计算机程序产品,所述计算机程序产品被至少一个处理器执行以实现如权利要求1至23中任一项所述的控制信息DCI传输方法中的步骤。
- 一种通信设备,被配置成用于执行如权利要求1至23中任一项所述的控制信息DCI传输方法中的步骤。
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CN113746607B (zh) | 2023-03-03 |
JP2023523451A (ja) | 2023-06-05 |
EP4160967A1 (en) | 2023-04-05 |
EP4160967A4 (en) | 2023-11-22 |
CN116347610A (zh) | 2023-06-27 |
CN113746607A (zh) | 2021-12-03 |
KR20230017276A (ko) | 2023-02-03 |
US20230085345A1 (en) | 2023-03-16 |
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