Method and system for determining downlink control information in a wireless network - Patents.com

Abstract

A method and system for techniques for determining downlink control information in a wireless network are disclosed. In one exemplary aspect, the method includes performing, by a wireless device, for each first scheduled cell number, a determination of a maximum number of downlink control information (DCI) decodable by the wireless device within a time gap of the scheduling cell, the DCI being used to schedule downlink (DL) data or uplink (UL) data.

Description

[Technical field]

[0001] This patent document relates generally to wireless communications. [Background technology]

[0002] Mobile communication technologies are moving the world towards an increasingly connected and networked society. The rapid growth of mobile communications and technological advances are leading to greater demands on capacity and connectivity. Other aspects such as energy consumption, device cost, spectrum efficiency, and latency are also important to meet the needs of various communication scenarios. Various technologies are being discussed, including new methods to provide higher quality of service, longer battery life, and improved performance. Summary of the Invention [Means for solving the problem]

[0003] This patent document describes, among other things, techniques for determining downlink control information in a wireless network.

[0004] In one aspect, a method of data communication is disclosed, the method including performing, by a wireless device, for each first scheduled number of cells, a determination of a maximum number of downlink control information (DCI) decodable by the wireless device within a time gap of the scheduling cell, the DCI being used to schedule downlink (DL) data or uplink (UL) data.

[0005] In another exemplary aspect, a wireless communication apparatus is disclosed comprising a processor configured to implement the above-described method.

[0006] In another exemplary aspect, a computer storage medium storing code for implementing the above-described method is disclosed.

[0007] These and other aspects are described herein. The present invention provides, for example, the following: (Item 1) 1. A method for wireless communication, the method comprising: performing, by the wireless device, for each of a first number of scheduled cells, a determination of a maximum number of downlink control information (DCI) decodable by the wireless device within a time gap of a scheduling cell; The method, wherein the DCI is used to schedule downlink (DL) data or uplink (UL) data. (Item 2) 2. The method of claim 1, wherein the time gap is a slot, the first number is one, each scheduled cell has two scheduling cells, and the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell within one slot of the two scheduling cells. (Item 3) The one of the two scheduling cells: a first scheduling cell, the scheduled cell also having self-scheduling; a second scheduling cell, which is a scheduling cell other than the first scheduling cell; one of the two scheduling cells having a larger subcarrier spacing (SCS); and The one of the two scheduling cells having the smaller SCS 3. The method according to claim 2, comprising one of the steps: (Item 4) 2. The method of claim 1, wherein the time gap is a slot, the first number is one, the scheduled cell has two scheduling cells, and the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell within a span of one of the two scheduling cells. (Item 5) 5. The method of claim 4, wherein the determination of one of the two scheduling cells includes a priority rule associated with at least one of a cell, a number of spans, or a combination (X,Y), where X indicates a number of symbols corresponding to a minimum gap between starting symbols of two consecutive spans, and Y indicates a maximum number of consecutive symbols for each span. (Item 6) The priority rule is: one of the scheduling cells is selected based on the priority rule associated with each scheduling cell combination (X,Y); if the plurality of scheduling cells have the same priority for each scheduling cell combination (X,Y), selecting the one of the scheduling cells based on the priority rule associated with the span number; if the plurality of scheduling cells have the same priority with respect to the span number, the one of the scheduling cells is selected based on the priority rule associated with the cell; The method according to item 5, comprising: (Item 7) The priority rule associated with each scheduling cell combination (X,Y) is: selecting one of the scheduling cells having an X value less than the X values ​​of the other scheduling cells; and selecting one of said scheduling cells having an X value greater than the X values ​​of the other scheduling cells; 7. The method according to any one of items 5 to 6, comprising one of the steps: (Item 8) The priority rule associated with the span number of each scheduling cell is: selecting one of the scheduling cells having more spans than other scheduling cells; selecting one of the scheduling cells having less span than other scheduling cells; 7. The method according to any one of items 5 to 6, comprising one of the steps: (Item 9) The priority rule associated with the cell is: selecting a first one of the scheduling cells to be a primary cell (PCell); selecting a second scheduling cell from the scheduling cells; one of the following: 7. The method according to any one of items 5 to 6, wherein the second scheduling cell is a secondary cell (SCell) and is configured to schedule a PCell. (Item 10) 5. The method of claim 4, wherein if all wireless device-specific search spaces for scheduling a primary cell (PCell) are on a secondary cell (SCell) configured to schedule the PCell, the SCell is selected as one of the cells to schedule. (Item 11) 11. The method according to any of items 4 to 10, wherein the scheduling cells have the same subcarrier spacing (SCS). (Item 12) The determination of one of the two scheduling cells includes: a rule associated with a subcarrier spacing (SCS) relationship between the two scheduling cells; configured cells that are within a span of a first number of configured cells, the first number being equal to or greater than 1; The priority rules associated with the cell and 5. The method according to claim 4, wherein the method is carried out based on one of the following: (Item 13) The determining of one of the scheduling cells based on the rule associated with an SCS relationship between the two scheduling cells, If the SCS of an SCell configured to schedule a PCell is smaller than the SCS of the PCell, the SCell is selected as the one of the scheduling cells; If the SCS of an SCell configured to schedule a PCell is greater than the SCS of the PCell, the PCell is selected as the one of the scheduling cells; or If the SCS of an SCell configured to schedule a PCell is greater than the SCS of the PCell, the PCell is selected per slot as the one of the scheduling cells to process the maximum number of DCIs. Item 13. The method according to item 12, comprising at least one of the following: (Item 14) Determining the one of the scheduling cells based on the configured cells and within a first number of spans includes: If the SCS of an SCell is greater than the SCS of a PCell, for multiple spans of the SCell, or If the SCS of the SCell is smaller than the SCS of the PCell, Item 13. The method according to item 12, wherein the method is carried out in (Item 15) The one of the scheduling cells selected based on the priority rule associated with the cell, PCell, SCell, one of the scheduling cells having a larger SCS than the other scheduling cells; and one of the scheduling cells having a smaller SCS than the other scheduling cells; Item 13. The method according to item 12, comprising one of the following: (Item 16) 2. The method of claim 1, wherein the time gap is a slot or a span, and multiple scheduled cells are scheduled by a single DCI, and the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell or for each multiple scheduled cells within a slot or span of the scheduling cell. (Item 17) The maximum number of DCIs that can be decoded by the wireless device is: one DCI in a slot or span for each of the first number of scheduled cells, the one DCI being the single DCI used to schedule a first number of physical downlink shared channels (PDSCHs) or physical uplink shared channels (PUSCHs) on the first number of scheduled cells; or 17. The method of claim 16, wherein two DCIs in a slot or span for each of the first number of scheduled cells, one of the two DCIs being the single DCI used to schedule the first number of PDSCHs or PUSCHs on the first number of scheduled cells. (Item 18) 17. The method of claim 16, wherein the maximum number of DCIs decodable by the wireless device is one DCI in a slot or span per scheduled cell, and the single DCI used to schedule a first number of PDSCHs or PUSCHs on a first number of scheduled cells is the one DCI for each scheduled cell, or the single DCI used to schedule the first number of PDSCHs or PUSCHs on the first number of scheduled cells is the one DCI for one of the first number of scheduled cells. (Item 19) Item 17. The method of any of items 4 or 16, wherein the span is a set of consecutive symbols within a slot that the wireless device uses to monitor a physical channel. (Item 20) 20. An apparatus for wireless communication comprising a processor configured to perform the method according to any one of items 1 to 19. (Item 21) 20. A non-transitory computer readable medium storing code that, when executed by a processor, causes the processor to implement a method according to any one of items 1 to 19. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 illustrates a wireless communication system in accordance with some exemplary embodiments of the disclosed technology.

[0009] [Diagram 2] FIG. 2 illustrates a block diagram of a portion of a wireless system in accordance with some example embodiments of the disclosed technology.

[0010] [Diagram 3] FIG. 3 shows an example of determining the maximum number of unicast DCIs that can be decoded by a UE over a set of monitoring opportunities in a slot of a scheduling cell.

[0011] [Figure 4] FIG. 4 shows another example of determining the maximum number of unicast DCIs that can be decoded by a UE over a set of monitoring opportunities in a slot of a scheduling cell.

[0012] [Diagram 5] FIG. 5 shows an example of determining the maximum number of unicast DCIs that can be decoded by a UE over a set of monitoring opportunities within a span of a scheduling cell.

[0013] [Figure 6] FIG. 6 shows another example of determining the maximum number of unicast DCIs that can be decoded by a UE over a set of monitoring opportunities within a span of a scheduling cell.

[0014] [Figure 7] FIG. 7 shows an example of determining the maximum number of unicast DCIs that can be decoded by a UE over a set of monitoring opportunities within a slot of an sSCell or a span of a PCell.

[0015] [Figure 8] FIG. 8 shows an example of determining one of the cells to schedule by configuring every N spans of a PCell or sSCell.

[0016] [Figure 9] FIG. 9 shows an example of determining the maximum number of unicast DCIs that can be decoded by a UE, determined over a set of monitoring opportunities per span of a scheduling cell.

[0017] [Figure 10] FIG. 10 shows an example of determining the maximum number of unicast DCIs that can be decoded by a UE determined over a set of monitoring opportunities per N spans of a scheduling cell.

[0018] [Figure 11] FIG. 11 illustrates an example process for wireless communication in accordance with some exemplary embodiments of the disclosed technology. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Section headings are used in this document for ease of understanding only and are not intended to limit the scope of the embodiments to the section they are written in. Additionally, although the embodiments are described with reference to 5G examples, the disclosed techniques may be applied to wireless systems using protocols other than 5G or 3GPP protocols.

[0020] For the 5G mobile communication technology, the physical downlink control channel (PDCCH) of the primary cell (PCell) or primary secondary cell group cell (PSCell) can schedule the physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH) on the secondary cell (SCell). However, the PDSCH or PUSCH on the P(S)Cell cannot be scheduled by the PDCCH of the SCell. Given the dynamic spectrum sharing (DSS) in NR Rel-16, the resources of the PDCCH of the P(S)Cell may be limited. The NR PDCCH extension for cross-carrier scheduling, including the PDCCH of the SCell scheduling PDSCH or PUSCH on the P(S)Cell, is introduced to offload the P(S)Cell PDCCH, and therefore the maximum number of unicast DCIs that can be decoded by a UE on two scheduling cells for the same scheduled cell should be determined.

[0021] 1 illustrates an example of a wireless communication system 100 in which one or more embodiments of the present technology can be applied. The wireless communication system 100 can include one or more base stations (BSs) 105a, 105b, one or more wireless devices 110a, 110b, 110c, 110d, and a core network 125. The base stations 105a, 105b can provide wireless services to the wireless devices 110a, 110b, 110c, and 110d in one or more wireless sectors. In some implementations, the base stations 105a, 105b include directional antennas that generate two or more directional beams to provide wireless coverage in different sectors.

[0022] The core network 125 can communicate with one or more base stations 105a, 105b. The core network 125 provides connectivity with other wireless communication systems and wired communication systems. The core network can include one or more service subscription databases for storing information related to subscribed wireless devices 110a, 110b, 110c, and 110d. The first base station 105a can provide wireless services based on a first wireless access technology, and the second base station 105b can provide wireless services based on a second wireless access technology. The base stations 105a and 105b can be co-located or separately located within a field depending on the deployment scenario. The wireless devices 110a, 110b, 110c, and 1210d can support multiple different wireless access technologies. The techniques and embodiments described herein can be implemented by the base stations of the wireless devices described herein.

[0023] FIG. 2 is a block diagram representation of a portion of a wireless station according to one or more embodiments of the present technology that may be applied. A radio 205, such as a base station or wireless device (or UE), may include processor electronics 210, such as a microprocessor, that implements one or more of the wireless technologies presented herein. The radio 205 may include transceiver electronics 215 that transmits and / or receives wireless signals via one or more communication interfaces, such as an antenna 220. The radio 205 may include other communication interfaces for transmitting and receiving data. The radio 205 may include one or more memories (not explicitly shown) configured to store information, such as data and / or instructions. In some implementations, the processor electronics 210 may include at least a portion of the transceiver electronics 215. In some embodiments, at least some of the disclosed techniques, modules, or functions are implemented using the radio 205. In some embodiments, the radio 205 may be configured to perform the methods described herein. The network nodes described in this application may be implemented using the radio stations described above, or by using a hardware platform that includes a combination of one or more processors, one or more network interface hardware, and one or more memories for storing processor executable code or data.

[0024] With the increasing demand for 4th generation mobile communication technology (4G) Long Term Evolution (LTE) and LTE-Advanced (LTE-A) and 5th generation mobile communication technology (5G) (spectrum used for 4G can be reused for 5G through DSS), there is a need to develop technologies related to enhanced Mobile Broadband (eMBB), ultra-reliable low latency communications (URLLC), and multiple mobile telecommunications (mMTC).

[0025] In the current 5G system, the SCell can be a scheduling cell or a scheduled cell, and the P(S)Cell can be a scheduling cell and cannot be a scheduled cell. If the P(S)Cell can be both a scheduled cell and a scheduling cell, the maximum number of unicast DCIs that can be decoded by a UE on two scheduling cells for the same scheduled cell should be determined.

[0026] With regard to UE capabilities of downlink (DL) control channels and procedures, there are basic UE capabilities FG (functional group) 3-1 and extended UE capabilities FG3-5b. It should be noted that FG3-1 and FG3-5b are described in this patent document only as examples and are not intended as limitations on UE capabilities of downlink (DL) control channels and procedures.

[0027] For FG3-1, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled cell is: handle one unicast DCI scheduling DL and one unicast DCI scheduling UL per slot per scheduled CC for FDD; handle one unicast DCI scheduling DL and two unicast DCI scheduling UL per slot per scheduled CC for TDD.

[0028] For FG3-5b, the maximum number of unicast DCIs that can be decoded by the UE for a scheduled cell is as follows: for the set of monitoring opportunities that are in the same span; for each scheduled CC across this set of monitoring opportunities in FDD, process one unicast DCI scheduling DL and one unicast DCI scheduling UL; for each scheduled CC across this set of monitoring opportunities in TDD, process one unicast DCI scheduling DL and two unicast DCI scheduling UL; for each scheduled CC across this set of monitoring opportunities in TDD, process two unicast DCI scheduling DL and one unicast DCI scheduling UL.

[0029] Since an SCell can only be either a scheduling cell or a scheduled cell, and a P(S)Cell can only be a scheduling cell and cannot be a scheduled cell in current 5G systems, regardless of whether FG3-1 or FG3-5b or another FG is applied, the function of monitoring the PDCCH for a scheduled cell can only be performed by the scheduling cell, and the set of monitoring opportunities within a slot or span can also be determined by the scheduling cell.

[0030] If a P(S)Cell can be both a scheduled cell and a scheduling cell, the maximum number of unicast DCIs that can be decoded by a UE on two scheduling cells for the same scheduled cell should be determined. Furthermore, the set of monitoring opportunities within a slot or span on the scheduling cell should also be determined.

[0031] The disclosed techniques can be implemented according to some embodiments to determine the maximum number of unicast DCIs that can be decoded by a UE for a scheduled cell having two scheduling cells, as described below.

[0032] (Exemplary embodiment 1)

[0033] The disclosed techniques may be implemented according to some embodiments to determine the maximum number of unicast DCIs that can be decoded by a UE on two scheduling cells with respect to the same scheduled cell per slot of a first scheduling cell or a second scheduling cell, or a scheduling cell with a higher SCS, or a scheduling cell with a lower SCS.

[0034] In a carrier aggregation scenario, the configuration of a P(S)Cell (called "cell A") can be scheduled by an SCell (called "cell B"), and cell A supports a self-scheduling scheme. For cell B, the configuring cell B is a scheduling cell and supports scheduling cell A. Then cell A (scheduled cell) has two scheduling cells, which are cell A (first scheduling cell) and cell B (second scheduling cell). The maximum number of unicast DCIs that can be decoded by the UE on the two scheduling cells for the same scheduled cell A should be determined.

[0035] The subcarrier spacing (SCS) of cell A is μ1 and the SCS of cell B is μ2. Possible values ​​of SCS are 15 kHz, 30 kHz, 60 kHz, 120 kHz, or other values.

[0036] For a scheduled cell A with two scheduling cells, the maximum number of unicast DCIs that can be decoded by the UE is determined over a set of monitoring opportunities in slots of the first scheduling cell (cell A with SCS=μ1) or the second scheduling cell (cell B with SCS=μ2), or the scheduling cell with a higher SCS, or the scheduling cell with a lower SCS. Optionally, the maximum number of unicast DCIs can be one unicast DCI scheduling DL and one unicast DCI scheduling UL for frequency division duplex (FDD); one unicast DCI scheduling DL and two unicast DCI scheduling UL for time division duplex (TDD); two unicast DCI scheduling DL and one unicast DCI scheduling UL for TDD.

[0037] In some embodiments, FDD can be taken as an example, and the maximum number of unicast DCIs that can be decoded by the UE is determined over a set of monitoring opportunities in a slot of the first scheduling cell (cell A with SCS=μ1). In Fig. 3, the maximum number of unicast DCIs that can be decoded by the UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over a set of monitoring opportunities in a slot of the first scheduling cell (PCell with μ=0), and processes one unicast DCI scheduling DL and one unicast DCI scheduling UL on each 1 ms slot of the first scheduling cell or on each scheduled cell for the two scheduling cells. In FIG. 4, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities in slots of the first scheduling cell (PCell with μ=1), processing one unicast DCI scheduling DL and one unicast DCI scheduling UL on each 0.5 ms slot of the first scheduling cell or two scheduling cells per scheduled cell.

[0038] Similarly, the maximum number of unicast DCIs that can be decoded by the UE is determined over the set of monitoring opportunities in slots of the second scheduling cell (cell B with SCS=μ2), or a scheduling cell with a higher SCS, or a scheduling cell with a lower SCS. In one embodiment, the maximum number of unicast DCIs that can be decoded by the UE is determined over the set of monitoring opportunities in slots of a scheduling cell with a lower SCS. In FIG. 3, the maximum number of unicast DCIs that can be decoded by the UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities in slots of the first scheduling cell with a lower SCS (PCell), and processes one unicast DCI scheduling DL and one unicast DCI scheduling UL on each 1 ms slot of the first scheduling cell or on each scheduled cell for the two scheduling cells. In FIG. 4, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities in slots of the scheduling cell with the lower SCS (sSCell), and processes one unicast DCI scheduling DL and one unicast DCI scheduling UL on the two scheduling cells per 1 ms slot of the second scheduling cell.

[0039] In some embodiments described in this patent document, FDD is used as an example, but the same principles apply to TDD. Similarly, in some embodiments described in this patent document, PCell is used as an example, but the same principles apply to PSCell.

[0040] In another embodiment, for a scheduled cell A having two scheduling cells, the maximum number of unicast DCIs that can be decoded by the UE may be determined over a set of monitoring opportunities in slots of a first scheduling cell (cell A with SCS=μ1), and the maximum number of unicast DCIs that can be decoded by the UE may be determined over a set of monitoring opportunities in slots of a second scheduling cell (cell B with SCS=μ2). Optionally, for each scheduling cell of the scheduled cells, the maximum number of unicast DCIs may be: one unicast DCI scheduling DL and one unicast DCI scheduling UL for FDD; one unicast DCI scheduling DL and two unicast DCI scheduling UL for TDD; two unicast DCI scheduling DL and one unicast DCI scheduling UL for TDD.

[0041] In some embodiments, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is determined over a set of monitoring opportunities within a time gap of one of the scheduling cells. This ensures that when a PCell is scheduled by an SCell, the maximum number of unicast DCIs that can be decoded by a UE of a scheduled cell with two scheduling cells is clearly determined. This avoids potential problems with PDCCH missing detection that would otherwise have occurred if the maximum number of unicast DCIs that can be decoded by a UE on the UE side was different from that on the gNB side.

[0042] (Exemplary embodiment 2)

[0043] The disclosed techniques may be implemented to determine the maximum number of unicast DCIs that can be decoded by a UE on two scheduling cells for the same scheduled cell for each span of one of the scheduling cells according to at least one of a cell priority, a number of span priorities, and a combined (X,Y) priority, according to some embodiments. Optionally, both of the two scheduling cells have the same SCS due to a span-based monitoring function (i.e., FG3-5b).

[0044] where X denotes the number of symbols corresponding to the minimum gap between the starting symbols of two consecutive spans, and Y denotes the maximum number of consecutive symbols for each span. In some implementations, the combination (X,Y) is reported from the UE. Example values ​​of the combination (X,Y) may include (7,3), (4,3), and (2,2). There is a minimum time separation of X OFDM symbols between the starting symbols of the two spans, and each span is a maximum of Y consecutive OFDM symbols in length of a slot. In one example, the spans do not overlap, and all spans are contained in a single slot.

[0045] In a carrier aggregation scenario, the configuration of a P(S)Cell (called "cell A") can be scheduled by an SCell (called "cell B"), and cell A can also support a self-scheduling scheme. For cell B, the configuring cell B is a scheduling cell and supports the scheduling of cell A. Then, cell A has two scheduling cells: cell A (the first scheduling cell) and cell B (the second scheduling cell). The maximum number of unicast DCIs that can be decoded by a UE on the two scheduling cells for the same scheduled cell A should be determined.

[0046] The subcarrier spacing (SCS) of cell A is μ1 and the SCS of cell B is μ2. Possible values ​​of SCS are 15 kHz, 30 kHz, 60 kHz, 120 kHz or other values.

[0047] For a scheduled cell A having two scheduling cells, the maximum number of unicast DCIs that can be decoded by the UE is determined over a set of monitoring opportunities in a span of one of the scheduling cells. One of the scheduling cells is determined according to at least one of a cell priority, a number of span priorities, and a combination (X, Y) priority. Optionally, the maximum number of unicast DCIs may be one unicast DCI scheduling DL and one unicast DCI scheduling UL for FDD; one unicast DCI scheduling DL and two unicast DCI scheduling UL for TDD; two unicast DCI scheduling DL and one unicast DCI scheduling UL for TDD.

[0048] Method 1: In step 1, one of the cells to be scheduled is selected according to the combination (X,Y) priority. In step 2, if the combinations (X,Y) are the same, one of the cells to be scheduled is selected according to the number of span priorities. In step 3, if the combinations (X,Y) are the same and the number of spans is the same, one of the cells to be scheduled according to the cell priority is selected. In other implementations, one or more of the above operations can be optional, and the order of the above steps can be varied. For example, in step 1, one of the cells to be scheduled is selected according to the number of span priorities. In step 2, if the number of spans is the same, one of the cells to be scheduled is selected according to the combination (X,Y) priority. In step 3, if the combinations (X,Y) are the same and the number of spans is the same, one of the cells to be scheduled according to the cell priority is selected. For example, in step 1, one of the cells to be scheduled is selected according to the number of span priorities. In step 2, if the number of spans is the same, one of the cells to be scheduled is selected according to the cell priority. For example, in step 1, one of the cells to be scheduled is selected according to the combination (X,Y) priority. In step 2, if the combination (X,Y) is the same, one of the cells to be scheduled is selected according to the cell priority. For example, one of the cells to be scheduled is selected according to the number of span priorities. For example, one of the cells to be scheduled is selected according to the combination (X,Y) priority. For example, one of the cells to be scheduled is selected according to the cell priority.

[0049] Method 2: One of the cells is selected for scheduling according to cell priority.

[0050] Method 3: If all UE-specific search spaces (USSs) for scheduling the PCell are on the sSCell, the sSCell is selected as one of the scheduling cells. If the USSs for scheduling the PCell are located on both the PCell and the sSCell, Method 1 or 2 may be used. Here, the sSCell may be the SCell configured to schedule the PCell.

[0051] Combined (X,Y) Priority: Alternative 1 decides over the set of monitoring opportunities within the span of the cell with the smaller X value. Alternative 2 decides over the set of monitoring opportunities within the span of the cell with the larger X value. Note: If multiple (X,Y) are reported for a cell, then the X above is the X used to determine the span of the cell.

[0052] Number of span priorities: Alternative 1 decides over the set of monitoring opportunities within spans of cells that have more spans within one slot. Alternative 2 decides over the set of monitoring opportunities within spans of cells that have fewer spans within one slot.

[0053] Cell priority: Alternative 1 decides over the set of monitoring opportunities within the span of the PCell (first scheduling cell). Alternative 2 decides over the set of monitoring opportunities within the span of the sSCell (second scheduling cell).

[0054] As an example, in an embodiment where FDD is used, the maximum number of unicast DCIs that can be decoded by a UE is determined over the set of monitoring opportunities within the span of one of the scheduling cells according to Method 1. In Fig. 5, using Method 1, a first check of combination (X,Y) priority based on Alternative 1 is determined over the set of monitoring opportunities within the span of the cell with a smaller X value, and the two scheduling cells have the same combination (X,Y) = (2,2). Then, a check of the number of span priorities based on Alternative 1 is determined over the set of monitoring opportunities within the span of the cell with more spans within one slot, and the first scheduling cell (PCell) is selected since it has more spans than the second scheduling cell (sSCell). The maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities in the span of the first scheduling cell (PCell), and one unicast DCI scheduling DL and one unicast DCI scheduling UL are processed on the two scheduling cells for each span of the first scheduling cell. In Figure 6, using method 1, a first check of combination (X,Y) priority based on alternative 2 is determined over the set of monitoring opportunities in the span of the cell with the larger X value, and then the second scheduling cell with combination (X,Y)=(4,3) is selected. Then, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities within the span of the second scheduling cell (sSCell), processing one unicast DCI scheduling DL and one unicast DCI scheduling UL on the two scheduling cells per span of the second scheduling cell.

[0055] Similarly, the maximum number of unicast DCIs that can be decoded by the UE is determined over the set of monitoring opportunities in one span of the scheduling cells according to method 2. In one embodiment, the maximum number of unicast DCIs that can be decoded by the UE is determined over the set of monitoring opportunities in one span of the scheduling cells according to cell priority. In FIG. 5, using method 2, the maximum number of unicast DCIs that can be decoded by the UE for a scheduled PCell having two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities in one span of the scheduling cells according to cell priority. Alternative 1 determines to process one unicast DCI scheduling DL and one unicast DCI scheduling UL on two scheduling cells per span of the first scheduling cell (PCell) over the set of monitoring opportunities in the span of the PCell. In Figure 6, using Method 2, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities within the span of one of the scheduling cells according to cell priority. Alternative 2 decides to process one unicast DCI scheduling DL and one unicast DCI scheduling UL on two scheduling cells per span of a second scheduling cell (sSCell) over the set of monitoring opportunities within the span of the sSCell.

[0056] In some embodiments described in this patent document, FDD is used as an example, but the same principles apply to TDD. Similarly, in some embodiments described in this patent document, PCell is used as an example, but the same principles apply to PSCell.

[0057] In another embodiment, for a scheduled cell A having two scheduling cells, the maximum number of unicast DCIs that can be decoded by the UE may be determined over a set of monitoring opportunities in the span of a first scheduling cell (cell A with SCS=μ1), and the maximum number of unicast DCIs that can be decoded by the UE may be determined over a set of monitoring opportunities in the span of a second scheduling cell (cell B with SCS=μ2). Optionally, for each scheduling cell of the scheduled cells, the maximum number of unicast DCIs may be: one unicast DCI scheduling DL and one unicast DCI scheduling UL for FDD; one unicast DCI scheduling DL and two unicast DCI scheduling UL for TDD; two unicast DCI scheduling DL and one unicast DCI scheduling UL for TDD.

[0058] In some embodiments, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is determined over a set of monitoring opportunities within a time gap of one of the scheduling cells. This ensures that when a PCell is scheduled by an SCell, the maximum number of unicast DCIs that can be decoded by a UE of a scheduled cell with two scheduling cells is clearly determined. This avoids potential problems with PDCCH missing detection that would otherwise have occurred if the maximum number of unicast DCIs that can be decoded by a UE on the UE side was different from that on the gNB side.

[0059] (Exemplary embodiment 3)

[0060] The disclosed techniques may be implemented, based on some embodiments, to determine the maximum number of unicast DCIs that can be decoded by a UE on two scheduling cells for the same scheduled cell per span of one of the scheduling cells according to at least one of the SCS relationship between the two scheduling cells per N spans and the cell priority. Optionally, both of the two scheduling cells have different SCSs due to span-based monitoring function (i.e., FG3-5b).

[0061] In a carrier aggregation scenario, the configuration of a P(S)Cell (called "cell A") can be scheduled by an SCell (called "cell B"), and cell A can also support a self-scheduling scheme. For cell B, the configuring cell B is a scheduling cell and supports the scheduling of cell A. Then, cell A has two scheduling cells: cell A (the first scheduling cell) and cell B (the second scheduling cell). The maximum number of unicast DCIs that can be decoded by a UE on the two scheduling cells for the same scheduled cell A should be determined.

[0062] The subcarrier spacing (SCS) of cell A is μ1 and the SCS of cell B is μ2. Possible values ​​of SCS are 15 kHz, 30 kHz, 60 kHz, 120 kHz or other values.

[0063] For a scheduled cell A having two scheduling cells, the maximum number of unicast DCIs that can be decoded by the UE is determined over a set of monitoring opportunities in a span of one of the scheduling cells. One of the scheduling cells is determined according to at least one of the following: SCS relationship between the two scheduling cells per N spans, cell priority. Optionally, the maximum number of unicast DCIs can be: one unicast DCI scheduling DL and one unicast DCI scheduling UL for FDD; one unicast DCI scheduling DL and two unicast DCI scheduling UL for TDD; two unicast DCI scheduling DL and one unicast DCI scheduling UL for TDD.

[0064] Method 1: One of the scheduling cells is determined according to the SCS size relationship between the first scheduling cell (PCell) and the second scheduling cell (sSCell). If the SCS of the sSCell is smaller than the SCS of the PCell (smaller SCS schedules larger SCS), the span of one of the scheduling cells is the sSCell. If the SCS of the sSCell is larger than the SCS of the PCell (larger SCS schedules smaller SCS), alternative 1 is used and the maximum number of unicast DCIs that can be decoded by the UE is determined over the set of monitoring opportunities within the slots of the sSCell, or alternative 2 is used and the maximum number of unicast DCIs that can be decoded by the UE is determined over the set of monitoring opportunities within the span of the PCell.

[0065] Method 2: One of the scheduling cells is determined by configuring every N spans of the first scheduling cell (PCell) or the second scheduling cell (sSCell). Optionally, one of the scheduling cells is determined by configuring every N spans of the sSCell or every span of the PCell. For example, if the SCS of the sSCell is smaller than the SCS of the PCell (smaller SCS schedules larger SCS), one of the scheduling cells is determined by configuring every N=1 spans of the sSCell. If the SCS of the sSCell is larger than the SCS of the PCell (larger SCS schedules smaller SCS), one of the scheduling cells is determined by configuring every N=2 spans of the sSCell.

[0066] Method 3: One of the cells to schedule is selected according to cell priority. Alternative 1 decides over the set of monitoring opportunities within the span of the PCell. Alternative 2 decides over the set of monitoring opportunities within the span of the sSCell. Alternative 3 decides over the set of monitoring opportunities within the span of the cell with the larger SCS. Alternative 4 decides over the set of monitoring opportunities within the span of the cell with the smaller SCS.

[0067] Method 4: If all USSs for scheduling the PCell are on the sSCell, the sSCell is selected as one of the scheduling cells. If the USSs for scheduling the PCell are located on both the PCell and the sSCell, Methods 1, 2, or 3 are used.

[0068] As an example, in an embodiment where FDD is used, the maximum number of unicast DCIs that can be decoded by a UE is determined over a set of monitoring opportunities in a span of one of the scheduling cells according to method 1. In FIG. 7, using method 1, the SCS of the sSCell is larger than the SCS of the PCell (the larger SCS schedules the smaller SCS), and using alternative 1, the maximum number of unicast DCIs that can be decoded by a UE is determined over a set of monitoring opportunities in a slot of the sSCell. Then, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities in a slot of the sSCell, and processes one unicast DCI scheduling DL and one unicast DCI scheduling UL on the two scheduling cells for each slot of the second scheduling cell. Or, using method 1 and alternative 2, the maximum number of unicast DCIs that can be decoded by a UE is determined over a set of monitoring opportunities in a span of the PCell. Then, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities within the span of the first scheduling cell (PCell), and processes one unicast DCI scheduling DL and one unicast DCI scheduling UL on the two scheduling cells for each span of the first scheduling cell.

[0069] As an example, in an embodiment where FDD is used, the maximum number of unicast DCIs that can be decoded by a UE is determined over a set of monitoring opportunities in a span of one of the scheduling cells according to method 2. In FIG. 8, using method 2, one of the scheduling cells is determined by configuring for every N=2 span of the second scheduling cell (sSCell). Then, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell having two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over a set of monitoring opportunities in the N=2 span of the sSCell, and processes one unicast DCI scheduling DL and one unicast DCI scheduling UL on the two scheduling cells for every N=2 span of the second scheduling cell. Alternatively, method 2 can be used to determine one of the scheduling cells by configuring for every N=1 span of the first scheduling cell (PCell). Then, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is one unicast DCI scheduling DL and one unicast DCI scheduling UL over the set of monitoring opportunities within the span of the first scheduling cell (PCell), and processes one unicast DCI scheduling DL and one unicast DCI scheduling UL on the two scheduling cells for each span of the first scheduling cell.

[0070] In some embodiments described in this patent document, FDD is used as an example, but the same principles apply to TDD. Similarly, in some embodiments described in this patent document, PCell is used as an example, but the same principles apply to PSCell.

[0071] In another embodiment, for a scheduled cell A having two scheduling cells, the maximum number of unicast DCIs that can be decoded by the UE is determined over a set of monitoring opportunities in the span of the first scheduling cell (cell A with SCS=μ1), and the maximum number of unicast DCIs that can be decoded by the UE is determined over a set of monitoring opportunities in the span of the second scheduling cell (cell B with SCS=μ2). Optionally, for each scheduling cell of the scheduled cells, the maximum number of unicast DCIs may be one unicast DCI scheduling DL and one unicast DCI scheduling UL for FDD; one unicast DCI scheduling DL and two unicast DCI scheduling UL for TDD; two unicast DCI scheduling DL and one unicast DCI scheduling UL for TDD.

[0072] In some embodiments, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled PCell with two scheduling cells is determined over a set of monitoring opportunities within a time gap of one of the scheduling cells. This ensures that when a PCell is scheduled by an SCell, the maximum number of unicast DCIs that can be decoded by a UE of a scheduled cell with two scheduling cells is clearly determined. This avoids potential problems with PDCCH missing detection that would otherwise have occurred if the maximum number of unicast DCIs that can be decoded by a UE on the UE side was different from that on the gNB side.

[0073] (Exemplary embodiment 4)

[0074] The disclosed techniques may be implemented, based on some embodiments, to determine a maximum number of unicast DCIs that may be decoded by a UE for a scheduled cell per span of the scheduling cell according to at least one of an SCS relationship between the scheduling cell and the scheduled cell and an SCS relationship per N spans. Optionally, both the scheduling cell and the scheduled cell have different SCSs due to a span-based monitoring function (i.e., FG3-5b).

[0075] In a carrier aggregation scenario, a constituent cell A supports a self-scheduling scheme. For cell B, the configuration of cell B is scheduled by cell A. The maximum number of unicast DCIs that can be decoded by the UE for the scheduled cell B should be determined.

[0076] The subcarrier spacing (SCS) of cell A is μ1 and the SCS of cell B is μ2. Possible values ​​of SCS are 15 kHz, 30 kHz, 60 kHz, 120 kHz or other values.

[0077] For the scheduled cell B, the maximum number of unicast DCIs that can be decoded by the UE for the scheduled cell per span of the scheduling cell is determined according to at least one of the SCS relationships between the scheduling cell and the scheduled cell per N spans. Optionally, the maximum number of unicast DCIs is one unicast DCI scheduling DL and one unicast DCI scheduling UL for FDD; one unicast DCI scheduling DL and two unicast DCI scheduling UL for TDD; two unicast DCI scheduling DL and one unicast DCI scheduling UL for TDD.

[0078] Method 1: Determine per span or per slot of the scheduling cell according to the SCS size relationship between the scheduling cell and the scheduled cell. If the SCS of the scheduling cell is smaller than the SCS of the scheduled cell (smaller SCS schedules larger SCS), use per span of the scheduling cell. If the SCS of the scheduling cell is larger than the SCS of the scheduled cell, use per span of the scheduling cell.

[0079] Method 2: Determine every N spans of the cell to be scheduled.

[0080] Using method 2, as an example, in an embodiment in which FDD is used, the maximum number of unicast DCIs that can be decoded by a UE is determined over a set of monitoring opportunities per N spans of a scheduling cell. For example, in FIG. 9, if the SCS of the scheduling cell is smaller than the SCS of the scheduled cell (the smaller SCS schedules the larger SCS), one of the scheduling cells is determined by configuring per N=1 spans of the scheduling cell. Then, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled cell may be one unicast DCI scheduling DL and one unicast DCI scheduling UL over a set of monitoring opportunities in the spans of the scheduling cell. In FIG. 10, if the SCS of the scheduling cell is larger than the SCS of the scheduled cell, one of the scheduling cells is determined by configuring per N=2 spans of the scheduling cell. Then, the maximum number of unicast DCIs that can be decoded by a UE for a scheduled cell may be one unicast DCI scheduling DL and one unicast DCI scheduling UL over a set of monitoring opportunities per N=2 spans of the scheduling cell.

[0081] (Illustrative embodiment 5)

[0082] In a carrier aggregation scenario, the configuration of a P(S)Cell (called "cell A") can be scheduled by an SCell (called "cell B"), and cell A can also support a self-scheduling scheme. For cell B, the configuring cell B is a scheduling cell and supports the scheduling of cell A. Then, cell A has two scheduling cells, cell A (the first scheduling cell) and cell B (the second scheduling cell). The time for the PDSCH / PUSCH processing procedure for the scheduled cell A with two scheduling cells should be determined.

[0083] The subcarrier spacing (SCS) of cell A is μ1 and the SCS of cell B is μ2. Possible values ​​of SCS are 15 kHz, 30 kHz, 60 kHz, 120 kHz or other values.

[0084] Regarding the PDSCH processing time, N 1 is based on μ in Table 1 and Table 2 below for UE processing capabilities 1 and 2, respectively, and μ is the maximum T proc,1 As a result, PDCCH ,μ PDSCH ,μ UL ), and μ PDCCH corresponds to the subcarrier spacing of the PDCCH that schedules the PDSCH, and μ PDSCH corresponds to the subcarrier spacing of the scheduled PDSCH, and μ UL corresponds to the subcarrier spacing of the uplink channel over which the HARQ-ACK should be transmitted.

[0085] Allocated HARQ-ACK timing K 1 and the first uplink symbol of the PUCCH carrying the HARQ-ACK information is defined by the PUCCH resource to be used, including the effect of timing advance, and is1 If you start after (L 1 is the time after the end of the last symbol of the PDSCH carrying the TB being acknowledged.

number

[0086] N 1 is based on μ in Table 1 and Table 2 for UE processing capabilities 1 and 2, respectively, and μ is the maximum T proc,1 As a result, PDCCH ,μ PDSCH ,μ UL ), and μ PDCCH corresponds to the subcarrier spacing of the PDCCH that schedules the PDSCH, and μ PDSCH corresponds to the subcarrier spacing of the scheduled PDSCH, and μ UL corresponds to the subcarrier spacing of the uplink channel where the HARQ-ACK should be transmitted, and κ=T S / T C = 64, where T S =1 / (Δf ref N f,ref ), Δf ref =15 10 3 Hz and N f,ref =2048, T C =1 / (Δf max N f ) and Δf max =480 10 3 Hz and N f,ref =4096.

[0087] PDSCH DM-RS position for additional DM-RS 1 G 1 = 12, in Table 1 below, N 1,0 = 14, otherwise N 1,0 =13.

[0088] If the UE is configured with multiple active component carriers, the first uplink symbol carrying the HARQ-ACK information further includes the effect of the timing difference between the component carriers.

[0089] For PDSCH mapping type A: If the last symbol of the PDSCH is on the ith symbol of a slot, and i<7, then d 1,1 = 7-i, otherwise d 1 , 1 =0.

[0090] For UE processing capability 1: If the PDSCH is mapping type B and the number of allocated PDSCH symbols is 7, d 1,1 = 0 and the number of allocated PDSCH symbols is 4, then d 1,1 = 3 and the number of allocated PDSCH symbols is 2, then d 1,1 = 3 + d, where d is the number of overlapping symbols between the scheduling PDCCH and the scheduled PDSCH.

[0091] Regarding UE processing capability 2: If the PDSCH is mapping type B, and the number of allocated PDSCH symbols is 7, then d 1,1 = 0 and the number of allocated PDSCH symbols is 4, then d 1,1 is the number of overlapping symbols of the scheduling PDCCH and the scheduled PDSCH. If the number of allocated PDSCH symbols is 2, then if the scheduling PDCCH is within the 3-symbol CORESET and the CORESET and PDSCH have the same starting symbol, then d 1,1 = 3, otherwise d 1,1 is the number of overlapping symbols of the scheduling PDCCH and the scheduled PDSCH.

[0092] μ PDSCHFor UE processing capability 2 with scheduling restriction when =1, if the scheduled RB allocation exceeds 136 RBs, the UE defaults the processing time to capability 1. The UE may skip decoding some PDSCHs that have their last symbol within 10 symbols before the start of a PDSCH that is scheduled to follow capability 2 if any of those PDSCHs are scheduled with more than 136 RBs with 30 kHz SCS and follow the processing time of capability 1.

[0093] For a UE supporting capability 2 on a given cell, if the higher layer parameter processingType2Enabled in PDSCH-ServingCellConfig is configured for the cell and set to enabled, the processing time according to UE processing capability 2 applies.

[0094] If this PUCCH resource overlaps with another PUCCH or PUSCH resource, the HARQ-ACK is multiplexed; otherwise, the HARQ-ACK message is transmitted on the PUCCH.

[0095] Otherwise, the UE may not provide a valid HARQ-ACK corresponding to the scheduled PDSCH. proc,1 The value of is used in both the normal and extended cyclic prefix cases.

[0096] [Table 1]

[0097] [Table 2]

[0098] For a PDSCH on cell A with two scheduling cells, the PDCCH that schedules the PDSCH can be from one of the two scheduling cells. The PDSCH processing procedure time is determined using one of the following methods:

[0099] Method 1:N 1 is based on μ, where μ is the maximum T proc,1 As a result, PDCCH ,μ2 PDCCH ,μ PDSCH ,μ UL ), where μ1 PDCCH and μ PDCCH and correspond to the subcarrier spacing of the PDCCH on the two scheduling cells that schedule the PDSCH, respectively.

[0100] Method 2:N 1 is based on μ, where μ is the maximum T proc,1 As a result, PDCCH ,μ PDSCH ,μ UL ), where μ PDCCH corresponds to the minimum subcarrier spacing of the PDCCH on the two scheduling cells that schedule the PDSCH.

[0101] Method 3: If all USSs for scheduling cell A are configured on cell B, then N 1 is based on μ, where μ is the maximum T proc,1 (μ PDCCH ,μ PDSCH ,μ UL ), and μ PDCCH corresponds to the subcarrier spacing of the PDCCH on the second scheduling cell (cell B) that schedules the PDSCH. Otherwise, method 1 or 2 is used.

[0102] In the above embodiment, the PDSCH processing procedure time is used as an example, but the same principle applies to the PUSCH processing procedure time. In this embodiment, the PCell is used as an example, but the same principle applies to the PSCell.

[0103] (Example 6)

[0104] In a carrier aggregation scenario, the configuration of a P(S)Cell (called "cell A") can be scheduled by an SCell (called "cell B"), and cell A can also support a self-scheduling scheme. For cell B, the configuring cell B is a scheduling cell and supports the scheduling of cell A. Then cell A has two scheduling cells, cell A (the first scheduling cell) and cell B (the second scheduling cell). The PDSCH reception preparation time on the scheduled cell A with the two scheduling cells should be determined.

[0105] The subcarrier spacing (SCS) of cell A is μ1 and the SCS of cell B is μ2. Possible values ​​of SCS are 15 kHz, 30 kHz, 60 kHz, and 120 kHz.

[0106] In this scheme, the PDCCH carrying the scheduling DCI is spaced apart from one OFDM subcarrier (μ PDCCH ) and the PDSCH scheduled to be received by the DCI is received on one carrier with a different OFDM subcarrier spacing (μ PDCCH ) on another carrier that has

[0107] μ PDCCH <μ PDSCH , then the UE may use the slot offset K without considering the effect of the reception timing difference between the scheduling cell and the scheduled cell. 0and the first symbol in the PDSCH allocation including the DM-RS defined by the start and length indicator SLIV of the scheduling DCI occurs at least N after the end of the PDCCH that schedules the PDSCH. pdsch If the PDSCH reception starts after the first symbol of the slot, which starts this PDCCH symbol, then it is expected to receive the scheduled PDSCH.

[0108] μ PDCCH >μ PDSCH , then the UE may use the slot offset K without considering the effect of the reception timing difference between the scheduling cell and the scheduled cell. 0 and the first symbol in the PDSCH allocation containing the DM-RS defined by the start and length indicator SLIV of the scheduling DCI is N after the end of the PDCCH scheduling PDSCH. pdsch If it starts after this PDCCH symbol, it is expected to receive a scheduled PDSCH.

[0109] [Table 3]

[0110] Regarding the PDSCH reception setup time, for a PDSCH on cell A with two scheduling cells, the PDCCH that schedules this PDSCH can be from one of the two scheduling cells. The PDSCH reception setup time is determined in one of the following ways:

[0111] Method 1: PDSCH receive preparation time is supported only if all USSs for scheduling cell A are configured on cell B.

[0112] Method 2: sSCell-schedule - The PDSCH reception preparation time of the PCell is determined by the PDCCH of the sSCell and the PDSCH of the PCell / PSCell, and also applies to the PDSCH of cell A with self-scheduling.

[0113] Method 3: Define different UE capabilities for PDSCH reception preparation time: One capability with only one PDSCH reception preparation time, i.e. determined by the PDCCH of the sSCell and the PDSCH of the PCell / PSCell, applies to both cell A self-scheduling and cell A scheduled by cell B; Another capability with two PDSCH reception preparation times, i.e. one determined by the PDCCH of the sSCell and the PDSCH of the PCell / PSCell, applies only to cell A scheduled by cell B, and the other is 0, applies only to cell A self-scheduling.

[0114] (Exemplary embodiment 7)

[0115] If a one-to-two scheduling scheme is supported, the maximum number of unicast DCIs that a UE can decode is determined for each scheduled cell or for each slot / span of the scheduling cell for each of the two scheduled cells. In some implementations, the exemplary embodiment 7 can also be used for one-to-many scheduling.

[0116] In a carrier aggregation scenario, the configuration of a PCell (called "cell A") is a self-scheduling scheme. For cell B, the constituent cell B is the scheduled cell and is scheduled by cell A. The two PDSCHs on the two cells (cell A and cell B) are scheduled by a single DCI on cell A. Alternatively, for cell C, the constituent cell C is the scheduled cell and is scheduled by cell A, and the two PDSCHs on the two cells (cell B and cell C) are scheduled by a single DCI on cell A. If the two PDSCHs on the two cells are scheduled by a single DCI, the maximum number of unicast DCIs that can be decoded by the UE for the scheduled cell should be determined. In some implementations, these methods can also be used for N PDSCHs on N cells scheduled by a single DCI.

[0117] The subcarrier spacing (SCS) of cell A is μ1 and the SCS of cell B is μ2. Possible values ​​of SCS are 15 kHz, 30 kHz, 60 kHz, 120 kHz or other values.

[0118] If two PDSCHs on two cells are scheduled by a single DCI, the maximum number of unicast DCIs that can be decoded by the UE for the scheduled cell over the set of monitoring opportunities in the slot / span of the scheduling cell is determined by one of the following methods. Optionally, the maximum number of unicast DCIs can be one unicast DCI scheduling DL and one unicast DCI scheduling UL for FDD; one unicast DCI scheduling DL and two unicast DCI scheduling UL for TDD; two unicast DCI scheduling DL and one unicast DCI scheduling UL for TDD. In some implementations, these methods can also be used for N PDSCHs on N cells scheduled by a single DCI.

[0119] Method 1: The maximum number of unicast DCI scheduling DLs that can be decoded by a UE over a set of monitoring opportunities in a slot / span of a scheduling cell is determined for each of the two scheduled cells. In this case, for the two scheduled cells, the maximum number of unicast DCI scheduling DLs that can be decoded by a UE over a set of monitoring opportunities in a slot / span of a scheduling cell is one for FDD, which is a single DCI that schedules two PDSCHs on two cells. In some implementations, these methods can also be used for N PDSCHs on N cells scheduled by a single DCI. In this case, the maximum number of unicast DCI scheduling DLs that can be decoded by a UE over a set of monitoring opportunities in a slot / span of a scheduling cell is determined for each of the N scheduled cells.

[0120] Method 2: The maximum number of unicast DCI scheduling DL that can be decoded by the UE over the set of monitoring opportunities in the slot / span of the scheduling cell is determined for each scheduled cell. In this case, for each of the two scheduled cells, the maximum number of unicast DCI scheduling DL that can be decoded by the UE over the set of monitoring opportunities in the slot / span of the scheduling cell is one for FDD, the same as the DL DCI of the first scheduled cell and the DL DCI of the second scheduled cell, which is a single DCI that schedules two PDSCHs on two cells. In some implementations, these methods can also be used for N PDSCHs on N cells scheduled by a single DCI. For N PDSCHs on N cells scheduled by a single DCI, for each of the N scheduled cells, the maximum number of unicast DCI scheduling DL that can be decoded by the UE over the set of monitoring opportunities within the slot / span of the scheduling cell is one for FDD, where the DL DCI of the first scheduled cell and the DL DCI for each of the other scheduled cells are the same, which is a single DCI scheduling the N PDSCHs on N cells.

[0121] Method 3: The maximum number of unicast DCI scheduling DLs that can be decoded by the UE over the set of monitoring opportunities in the slot / span of the scheduling cell is determined for each scheduled cell. In this case, for each of the two scheduled cells, the maximum number of unicast DCI scheduling DLs that can be decoded by the UE over the set of monitoring opportunities in the slot / span of the scheduling cell is one for FDD, and a single DCI that schedules two PDSCHs on the two cells is counted only in one of the two scheduled cells. Furthermore, for the other of the two scheduled cells, the UE can decode another unicast DL DCI, which can be a legacy DCI or a single DCI that schedules two PDSCHs on the two cells. Optionally, a single DCI that schedules two PDSCHs on the two cells is counted only in one of the two scheduled cells, and both the scheduling cell and the scheduled cell, i.e., in the case of a single DCI on cell A, cell A can be selected to schedule the PDSCH on cell A and the PDSCH on cell B. In some implementations, these methods can also be used for N PDSCHs on N cells scheduled by a single DCI. In the case of N PDSCHs on N cells scheduled by a single DCI, the maximum number of unicast DCI scheduling DL that can be decoded by the UE over the set of monitoring opportunities in the slot / span of the scheduling cell is one for FDD, and the single DCI scheduling N PDSCHs on N cells is counted only in one of the N scheduled cells. Furthermore, for each of the other cells of the N scheduled cells, the UE can decode another unicast DL DCI, which can be a legacy DCI or a single DCI scheduling N PDSCHs on N cells.

[0122] Method 4: The maximum number of unicast DCI scheduling DLs that can be decoded by a UE over a set of monitoring opportunities in a slot / span of a scheduling cell is determined for each of the two scheduled cells. In this case, for each of the two scheduled cells, the maximum number of unicast DCI scheduling DLs that can be decoded by a UE over a set of monitoring opportunities in a slot / span of a scheduling cell is 2 for FDD, and at least one of the two DL DCIs is a single DCI that schedules two PDSCHs on two cells. Note that it can also be used for N PDSCHs on N cells scheduled by a single DCI. For N PDSCHs on N cells scheduled by a single DCI, the maximum number of unicast DCI scheduling DLs that can be decoded by a UE over a set of monitoring opportunities in a slot / span of a scheduling cell is determined for each of the N scheduled cells. For each of the N scheduled cells, the maximum number of unicast DCI scheduling DL that can be decoded by the UE over the set of monitoring opportunities within the slot / span of the scheduling cell is N for FDD, where at least one of the N DL DCIs is a single DCI scheduling N PDSCH on the N cells.

[0123] In some embodiments described in this patent document, FDD is used as an example, but the same principles apply to TDD. Similarly, in some embodiments described in this patent document, PCell is used as an example, but the same principles apply to PSCell.

[0124] (Exemplary embodiment 8)

[0125] In Rel-15, the PDSCH processing time for PDSCH processing capability 1 and capability 2 depends on whether an additional DMRS is configured.

[0126] Regarding the PDSCH processing time, N 1 is based on μ in Table 1 and Table 2 below for UE processing capabilities 1 and 2, respectively, and μ is the maximum T proc,1 As a result, PDCCH ,μ PDSCH ,μ UL ), and μ PDCCH corresponds to the subcarrier spacing of the PDCCH that schedules the PDSCH, and μ PDSCH corresponds to the subcarrier spacing of the scheduled PDSCH, and μ UL corresponds to the subcarrier spacing of the uplink channel over which the HARQ-ACK should be transmitted.

[0127] Allocated HARQ-ACK timing K 1 and the first uplink symbol of the PUCCH carrying the HARQ-ACK information is defined by the PUCCH resource to be used, including the effect of timing advance, and is 1 If you start after (L 1 is the time after the end of the last symbol of the PDSCH carrying the TB being acknowledged.

number

[0128] N 1 is based on μ in Table 1 and Table 2 for UE processing capabilities 1 and 2, respectively, and μ is the maximum T proc,1 As a result, PDCCH ,μ PDSCH ,μ UL ), and μ PDCCH corresponds to the subcarrier spacing of the PDCCH that schedules the PDSCH, and μ PDSCH corresponds to the subcarrier spacing of the scheduled PDSCH, and μ ULcorresponds to the subcarrier spacing of the uplink channel where the HARQ-ACK should be transmitted, and κ=T S / T C = 64, where T S =1 / (Δf ref N f,ref ), Δf ref =15 10 3 Hz and N f,ref =2048, T C =1 / (Δf max N f ) and Δf max =480 10 3 Hz and N f,ref =4096.

[0129] PDSCH DM-RS position for additional DM-RS 1 G 1 = 12, in Table 1 below, N 1,0 = 14, otherwise N 1,0 =13.

[0130] If the UE is configured with multiple active component carriers, the first uplink symbol carrying the HARQ-ACK information further includes the effect of the timing difference between the component carriers.

[0131] For PDSCH mapping type A: If the last symbol of the PDSCH is on the ith symbol of a slot, and i<7, then d 1,1 = 7-i, otherwise d 1 , 1 =0.

[0132] For UE processing capability 1: If the PDSCH is mapping type B and the number of allocated PDSCH symbols is 7, d 1,1 = 0 and the number of allocated PDSCH symbols is 4, then d 1,1 = 3 and the number of allocated PDSCH symbols is 2, then d 1,1= 3 + d, where d is the number of overlapping symbols between the scheduling PDCCH and the scheduled PDSCH.

[0133] Regarding UE processing capability 2: If the PDSCH is mapping type B, and the number of allocated PDSCH symbols is 7, then d 1,1 = 0 and the number of allocated PDSCH symbols is 4, then d 1,1 is the number of overlapping symbols of the scheduling PDCCH and the scheduled PDSCH. If the number of allocated PDSCH symbols is 2, then if the scheduling PDCCH is within the 3-symbol CORESET and the CORESET and PDSCH have the same starting symbol, then d 1,1 = 3, otherwise d 1,1 is the number of overlapping symbols of the scheduling PDCCH and the scheduled PDSCH.

[0134] μ PDSCH For UE processing capability 2 with scheduling restriction when =1, if the scheduled RB allocation exceeds 136 RBs, the UE defaults the processing time to capability 1. The UE may skip decoding some PDSCHs that have their last symbol within 10 symbols before the start of a PDSCH that is scheduled to follow capability 2 if any of those PDSCHs are scheduled with more than 136 RBs with 30 kHz SCS and follow the processing time of capability 1.

[0135] For a UE supporting capability 2 on a given cell, if the higher layer parameter processingType2Enabled in PDSCH-ServingCellConfig is configured for the cell and set to enabled, the processing time according to UE processing capability 2 applies.

[0136] If this PUCCH resource overlaps with another PUCCH or PUSCH resource, the HARQ-ACK is multiplexed; otherwise, the HARQ-ACK message is transmitted on the PUCCH.

[0137] Otherwise, the UE may not provide a valid HARQ-ACK corresponding to the scheduled PDSCH. proc,1 The values ​​of are used in both the normal and extended cyclic prefix cases, see Tables 1 and 2 above.

[0138] New DMRS parameters dmrs-DownlinkForPDSCH-MappingTypeA-DCI-1-2 and dmrs-DownlinkForPDSCH-MappingTypeB-DCI-1-2 have been introduced in DCI format 1_2 of the Rel-16 URLLC WI, and they are not reflected in the current Rel-16 specification. There may be four ways to include the new introduced RRC parameters in DCI format 1_2. The disclosed technology may be implemented in some embodiments to use one of the methods listed below to solve the problem.

[0139] Method 1: The PDSCH processing time is independent of the DCI format. That is, the PDSCH decoding time N is increased only if dmrs-AdditionalPosition="pos0" is configured in the DMRS-DownlinkConfig in all of dmrs-DownlinkForPDSCH-MappingTypeA, dmrs-DownlinkForPDSCH-MappingTypeB, dmrs-DownlinkForPDSCH-MappingTypeA-DCI-1-2 and dmrs-DownlinkForPDSCH-MappingTypeB-DCI-1-2. 1is the case according to the shortened processing time for PDSCH processing capability 1 or is the case allowed for PDSCH processing capability 2. This method is a unified N 1 However, this method causes larger processing time and limits scheduling for PDSCH processing capability 2 even if the PDSCH is not scheduled with additional DMRS for PDSCH processing capability 1. For example, method 1 corresponds to Table 1-1 and Table 2-1.

[0140] [Table 1-1]

[0141] [Table 2-1]

[0142] Method 2: The PDSCH processing time is defined per DMRS configuration. In other words, the PDSCH processing time can be different for PDSCHs scheduled by a legacy DCI format (i.e., DCI format 1_1) and a new DCI format (i.e., DCI format 1_2). This is more flexible, but the UE needs to dynamically change the UE PDSCH processing time for different PDSCHs scheduled by different DCI formats. For example, Method 2 corresponds to Table 1-2 and Table 2-2.

[0143] [Table 1-2]

[0144] [Table 2-2]

[0145] Method 3: The PDSCH processing time is independent of the DCI format of the PDSCH processing time for PDSCH processing capability 1, and the PDSCH processing time is defined for each DMRS configuration of the PDSCH processing time for PDSCH processing capability 2. For example, Method 3 corresponds to Table 1-1 and Table 2-2.

[0146] Method 4: The PDSCH processing time is independent of the DCI format of the PDSCH processing time for PDSCH processing capability 2, and the PDSCH processing time is defined for each DMRS configuration of the PDSCH processing time for PDSCH processing capability 1. For example, Method 4 corresponds to Table 1-2 and Table 2-1.

[0147] The disclosed techniques may be implemented in some embodiments to determine the maximum number of DCIs that a UE can process.

[0148] In the implementation, when a scheduled cell has two scheduling cells, the time granularity (MO set per time gap) and cell decision method for processing the maximum number of DCIs are as follows:

[0149] In case of same monitoring capability per slot (e.g., FG3-1): If a different SCS, PCell or sSCell or maximum SCS or minimum SCS is used to determine the cell with the maximum number of DCIs per slot, the same SCS can be determined per slot for any scheduling cell.

[0150] When the monitoring capability per slot (e.g., FG3-5b) is the same: When the SCSs are different, method 1 is determined according to the SCS size relationship between the PCell and the sSCell. When the SCS of the sSCell is smaller than that of the PCell (smaller SCS schedules larger SCS), the span is determined based on the sSCell. When the SCS of the sSCell is larger than that of the PCell (larger SCS schedules smaller SCS), alternative 1 is performed per slot of the sSCell. The maximum number of DCI processing opportunities at one time is determined per span of the PCell. Method 2 is per N spans of the sSCell or per span of the PCell as a processing time unit, i.e., the configuration per N spans of the sSCell or per span of the PCell is used to determine the number of DCIs processed by the scheduled cell. For example, when the SCS of the sSCell is smaller than that of the PCell (smaller SCS schedules larger SCS), N=1 is configured. If the SCS of the sSCell is larger than the SCS of the PCell (the larger SCS schedules the smaller SCS), N=2 is configured. Method 3 is based on cell priority. Method 4 provides that if the USSs for scheduling the PCell are all on the sSCell, the sSCell is selected as the scheduling cell. If the USSs for scheduling the PCell are on both the PCell and the sSCell, methods 1, 2, or 3 are used.

[0151] If the SCSs are the same, in some implementations, Method 1 may be used. Step 1: First, select a cell to schedule according to the combination (X,Y) priority. Step 2: If (X,Y) are the same, the cell to schedule is selected according to the span number priority. Step 3: If (X,Y) are the same and the number of spans is also the same, the cell to schedule is selected according to the cell priority. Method 2 may also be used. The cell to schedule is directly selected according to the cell priority. Method 3 may also be used when the USSs for scheduling the PCell are all sSCells. The sSCell is selected as the cell to schedule. If the USSs for scheduling the PCell are in both the PCell and the sSCell, Method 1 or 2 is used.

[0152] For combined (X,Y) priorities, Alternative 1 decides for each span of the MO set that has a cell with a smaller X value. Alternative 2 decides for each span of the MO set that has a cell with a larger X value. If multiple (X,Y) are reported for a cell, then the X above is the X used to determine the span of the cell.

[0153] With respect to the priority of the number of spans, alternative 1 gives priority to cells with more spans for the decision on a per span basis of the MO set. Alternative 2 gives priority to cells with fewer spans for the decision on a per span basis of the MO set.

[0154] With regard to cell priority, alternative 1 prioritizes PCells for decision per span of the MO set, alternative 2 prioritizes sSCells for decision per span of the MO set, alternative 3 corresponds to a larger SCS and alternative 4 corresponds to a smaller SCS.

[0155] In another implementation, if two PDSCHs on two cells are scheduled by a single DCI, the method for determining the maximum number of DCIs at this time is as follows.

[0156] Method 1: One DL DCI per two-cell process scheduled. Only one DL DCI is processed by two cells.

[0157] Method 2: One DL DCI per scheduled cell process. Each cell is considered as one DL DCI processed by the cell.

[0158] Method 3: One DL DCI per scheduled cell process. One two-cell scheduling DCI transmitted by the gNB per slot is used as one DL DCI that is included in and processed by only one cell. A second two-cell scheduling DCI or the other can be processed. As for a legacy DL DCI of another cell, it is included in the other cell and treated as one DL DCI.

[0159] Method 4: Processing two DL DCIs for every two scheduled cells, one of the DL DCIs being a two-cell scheduling DCI

[0160] FIG. 11 illustrates an example process for wireless communication in accordance with some exemplary embodiments of the disclosed technology.

[0161] In some implementations, a process 1100 for wireless communication may include, at 1110, receiving, by the wireless device, a configuration from a network device, and, at 1120, initiating, by the wireless device, a process for restoring a link to the network based on information elements in the configuration associated with different criteria.

[0162] It will be appreciated that the present specification discloses techniques that may be embodied in various embodiments for determining downlink control information in a wireless network. The disclosed and other embodiments, modules and functional operations described herein may be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed herein and their structural equivalents, or in one or more combinations thereof. The disclosed and other embodiments may be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer-readable medium for execution by or for controlling the operation of a data processing apparatus. The computer-readable medium may be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter that provides a machine-readable propagated signal, or one or more combinations thereof. The term "data processing apparatus" encompasses all apparatus, devices, and machines for processing data, including, by way of example, a programmable processor, a computer, or multiple processors or computers. An apparatus may include, in addition to hardware, code that creates an environment for the execution of the computer program in question, e.g., code that constitutes a processor firmware, a protocol stack, a database management system, an operating system, or one or more combinations thereof. A propagated signal is an artificially generated signal, such as a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to an appropriate receiving device.

[0163] A computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored in part of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple cooperating files (e.g., files that store one or more modules, subprograms, or portions of code). A computer program can be deployed to be executed on one computer, or on multiple computers located at one site or distributed across multiple sites and interconnected by a communication network.

[0164] The processes and logic flows described herein may be performed by one or more programmable processors executing one or more computer programs to perform functions by manipulating input data to generate output. The processes and logic flows may also be performed by, and an apparatus may also be implemented as, special purpose logic circuitry, such as, for example, an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).

[0165] Processors suitable for executing computer programs include, by way of example, both general purpose and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor receives instructions and data from a read-only memory or a random access memory or both. The essential elements of a computer are a processor for executing instructions, and one or more memory devices for storing instructions and data. Generally, a computer also includes, or is operatively coupled to receive data from, transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto-optical, or optical disks. However, a computer need not have such devices. Computer-readable media suitable for storing computer program instructions and data include, by way of example, all forms of non-volatile memory, media, and memory devices, including semiconductor memory devices such as EPROM, EEPROM, and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks. The processor and memory can be supplemented by, or incorporated in, special purpose logic circuitry.

[0166] Some embodiments may preferably implement one or more of the following solutions, enumerated in clause form. The following clauses are supported and further described in the above examples and throughout this document. As used in the following clauses and claims, a wireless terminal may be a user equipment, a mobile station, or any other wireless terminal including a fixed node such as a base station. A network device includes a base station including a next-generation Node B (gNB), an enhanced Node B (eNB), or any other device functioning as a base station. A resource range may refer to a range of a time-frequency resource or block.

[0167] Clause 1. A method for wireless communication, the method including performing, by a wireless device, for each of a first number of scheduled cells, a determination of a maximum number of downlink control information (DCI) decodable by the wireless device within a time gap of the scheduling cell, the DCI being used for scheduling downlink (DL) data or uplink (UL) data.

[0168] Term 2. The method of Term 1, wherein the time gap is a slot, the first number is 1, each scheduled cell has two scheduling cells, and the maximum number of downlink control information (DCI) decodable by the wireless device is determined within one slot of the two scheduling cells for each scheduled cell.

[0169] Clause 3. The method of clause 2, wherein one of the two scheduling cells includes one of: a first scheduling cell that is a scheduled cell that also has self-scheduling; a second scheduling cell that is a scheduling cell other than the first scheduling cell; one of the two scheduling cells having a larger subcarrier spacing (SCS); and one of the two scheduling cells having a smaller SCS.

[0170] Clause 4. The method of clause 1, wherein the time gap is a slot, the first number is 1, the scheduled cell has two scheduling cells, and the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell within a span of one of the two scheduling cells.

[0171] Clause 5. The method of clause 4, wherein the determination of one of the two scheduling cells includes a priority rule associated with at least one of a cell, a number of spans, or a combination (X,Y), where X indicates a number of symbols corresponding to a minimum gap between the starting symbols of two consecutive spans, and Y indicates a maximum number of consecutive symbols for each span.

[0172] Clause 6. The method of clause 5, wherein the priority rules include: one of the scheduling cells is selected based on a priority rule associated with each scheduling cell combination (X,Y); if multiple scheduling cells have the same priority with respect to each scheduling cell combination (X,Y), one of the scheduling cells is selected based on a priority rule associated with the span number; and if multiple scheduling cells have the same priority with respect to the span number, one of the scheduling cells is selected based on a priority rule associated with the cell.

[0173] Clause 7. The method of any of clauses 5 to 6, wherein the priority rule associated with each scheduling cell combination (X, Y) includes one of: selecting one of the scheduling cells having an X value smaller than the X value of the other scheduling cells; and selecting one of the scheduling cells having an X value larger than the X value of the other scheduling cells.

[0174] Clause 8. The method of any of clauses 5 to 6, wherein the priority rule associated with the number of spans of each scheduling cell includes one of selecting one of the scheduling cells that has more spans than the other scheduling cells, and selecting one of the scheduling cells that has fewer spans than the other scheduling cells.

[0175] Clause 9. The method of any of clauses 5 to 6, wherein the priority rule associated with the cell includes one of selecting a first scheduling cell among the scheduling cells that is a primary cell (PCell) and selecting a second scheduling cell among the scheduling cells that is a secondary cell (SCell) and is configured to schedule the PCell.

[0176] Clause 10. The method of clause 4, wherein if all wireless device-specific search spaces for scheduling a primary cell (PCell) are on a secondary cell (SCell) configured to schedule the PCell, the SCell is selected as one of the cells to schedule.

[0177] Clause 11. The method according to any one of clauses 4 to 10, wherein the scheduling cells have the same subcarrier spacing (SCS).

[0178] Clause 12. The method of clause 4, wherein the determination of one of the two scheduling cells is performed based on one of a rule associated with a subcarrier spacing (SCS) relationship between the two scheduling cells, a configured cell that is within a span of a first number, the first number being equal to or greater than 1, and a priority rule associated with the configured cell.

[0179] Clause 13. The method of clause 12, wherein the determination of one of the scheduling cells based on a rule associated with an SCS relationship between two scheduling cells includes at least one of: selecting an SCell as one of the scheduling cells if the SCS of the SCell configured to schedule the PCell is smaller than the SCS of the PCell; selecting an SCell as one of the scheduling cells if the SCS of the SCell configured to schedule the PCell is larger than the SCS of the PCell; or selecting a PCell per slot as one of the scheduling cells to handle a maximum number of DCIs if the SCS of the SCell configured to schedule the PCell is larger than the SCS of the PCell.

[0180] Clause 14. The method of clause 12, wherein determining one of the cells to schedule based on the configured cells and within the first number of spans is performed for each of the spans of the SCell if the SCS of the SCell is greater than the SCS of the PCell, or for each span of the SCell if the SCS of the SCell is less than the SCS of the PCell.

[0181] Clause 15. The method of clause 12, wherein one of the scheduling cells selected based on a priority rule associated with the cell includes one of a PCell, an SCell, one of the scheduling cells having a larger SCS than the other scheduling cells, and one of the scheduling cells having a smaller SCS than the other scheduling cells.

[0182] Clause 16. The method of clause 1, wherein the time gap is a slot or span, multiple scheduled cells are scheduled by a single DCI, and the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell or for each of multiple scheduled cells within the slot or span of the scheduling cell.

[0183] Clause 17. The method of clause 16, wherein the maximum number of DCIs that can be decoded by the wireless device is one DCI within a slot or span per first number of scheduled cells, where the one DCI is a single DCI used to schedule the first number of physical downlink shared channels (PDSCHs) or physical uplink shared channels (PUSCHs) on the first number of scheduled cells, or two DCIs within a slot or span per first number of scheduled cells, where one of the two DCIs is a single DCI used to schedule the first number of PDSCHs or PUSCHs on the first number of scheduled cells.

[0184] Clause 18. The method of clause 16, wherein the maximum number of DCIs decodable by the wireless device is one DCI in a slot or span per scheduled cell, and the single DCI used to schedule the first number of PDSCHs or PUSCHs on the first number of scheduled cells is one DCI for each scheduled cell, or the single DCI used to schedule the first number of PDSCHs or PUSCHs on the first number of scheduled cells is one DCI for one of the first number of scheduled cells.

[0185] Clause 19. The method of clause 4 or 16, wherein a span is a set of consecutive symbols in a slot that is used by a wireless device to monitor a physical channel.

[0186] Clause 20. An apparatus for wireless communication comprising a processor configured to perform the method according to any one of clauses 1 to 19.

[0187] Clause 21. A non-transitory computer readable medium storing code that, when executed by a processor, causes the processor to implement a method according to any one of clauses 1 to 19.

[0188] While this patent document contains many details, these should not be construed as limitations on the scope of any invention or what may be claimed, but rather as descriptions of features that may be specific to particular embodiments of a particular invention. Certain features described in this patent document in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable subcombination. Furthermore, although features may be described above as acting in a particular combination and may initially be claimed as such, one or more features from a claimed combination may, in some cases, be cut out of the combination, and the claimed combination may be directed to a subcombination or a variation of the subcombination.

[0189] Similarly, although operations are shown in the figures in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown, or in any sequential order, or that all of the operations shown be performed, to achieve desirable results. Further, the separation of various system components in the embodiments described in this patent document should not be understood as requiring such separation in all embodiments.

[0190] Only some implementations and examples have been described; other implementations, extensions and variations may be made based on what is described and illustrated in this patent document.

Claims

1. 1. A method for wireless communication, the method comprising: performing, by a wireless device, for each scheduled cell, a determination of a maximum number of Downlink Control Information (DCI) decodable by said wireless device within a time gap of the scheduling cell; the time gap is a slot, each scheduled cell has two scheduling cells, and the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell within one slot of the two scheduling cells; The DCI is used to schedule downlink (DL) data or uplink (UL) data; One of the two scheduling cells a first scheduling cell, which is a scheduled cell that also has self-scheduling; a second scheduling cell, the second scheduling cell being a scheduling cell other than the first scheduling cell; or Scheduling Cells with Smaller Subcarrier Spacing (SCS) The method includes one of the following:

2. A method for wireless communication, the method comprising: performing, by a wireless device, for each scheduled cell, a determination of a maximum number of Downlink Control Information (DCI) decodable by said wireless device within a time gap of the scheduling cell; the time gap is a slot, the scheduled cell has two scheduling cells, the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell within a span of one of the two scheduling cells, the span being a set of consecutive symbols within a slot used by the wireless device to monitor a physical channel; The method, wherein the determination of the one of the two scheduling cells includes a priority rule associated with at least one of a cell, a number of spans, or a combination (X, Y), where X indicates a number of symbols corresponding to a minimum gap between starting symbols of two consecutive spans, and Y indicates a maximum number of consecutive symbols for each span.

3. The priority rule is: one of the scheduling cells is selected based on the priority rule associated with each scheduling cell combination (X, Y); if multiple scheduling cells have the same priority for each scheduling cell combination (X, Y), selecting one of the scheduling cells based on the priority rule associated with the span number; if the plurality of scheduling cells have the same priority with respect to the span number, the one of the scheduling cells is selected based on the priority rule associated with the cell; The method of claim 2 , comprising:

4. The priority rule associated with each scheduling cell combination (X, Y) is: selecting one of the scheduling cells having an X value less than the X values ​​of the other scheduling cells; and selecting one of said scheduling cells having an X value greater than the X values ​​of the other scheduling cells; The method according to any one of claims 2 to 3, comprising one of the following steps:

5. 3. The method of claim 2, wherein if all wireless device specific search spaces for scheduling a primary cell (PCell) are on a secondary cell (SCell) configured to schedule the PCell, then the SCell is selected as one of the scheduling cells.

6. A method for wireless communication, the method comprising: performing, by a wireless device, for each scheduled cell, a determination of a maximum number of Downlink Control Information (DCI) decodable by said wireless device within a time gap of the scheduling cell; the time gap is a slot, the scheduled cell has two scheduling cells, the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell within a span of one of the two scheduling cells, the span being a set of consecutive symbols within a slot used by the wireless device to monitor a physical channel; The scheduling cells have the same subcarrier spacing (SCS).

7. A method for wireless communication, the method comprising: performing, by a wireless device, for each scheduled cell, a determination of a maximum number of Downlink Control Information (DCI) decodable by said wireless device within a time gap of the scheduling cell; the time gap is a slot, the scheduled cell has two scheduling cells, the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell within a span of one of the two scheduling cells, the span being a set of consecutive symbols within a slot used by the wireless device to monitor a physical channel; The determination of the one scheduling cell of the two scheduling cells includes: a rule associated with a subcarrier spacing (SCS) relationship between the two scheduling cells; configured cells that are within a span of a first number of configured cells, the first number being equal to or greater than one; The priority rules associated with the cell and The method is performed based on one of the following:

8. A method for wireless communication, the method comprising: performing, by the wireless device, for each of a first number of scheduled cells, a determination of a maximum number of Downlink Control Information (DCI) decodable by the wireless device within a time gap of a scheduling cell; the time gap is a slot or a span, multiple scheduled cells are scheduled by a single DCI, and the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell or for each multiple scheduled cells within the slot or span of the scheduling cell, the span being a set of consecutive symbols within a slot used by the wireless device to monitor a physical channel; The maximum number of DCIs that can be decoded by the wireless device is: one DCI in a slot or span for each of the first number of scheduled cells, the one DCI being the single DCI used to schedule the first number of physical downlink shared channels (PDSCHs) or physical uplink shared channels (PUSCHs) on the first number of scheduled cells; or 2 DCIs in a slot or span for each of the first number of scheduled cells, one of the two DCIs being the single DCI used for scheduling the first number of PDSCHs or PUSCHs on the first number of scheduled cells.

9. A method for wireless communication, the method comprising: performing, by the wireless device, for each of a first number of scheduled cells, a determination of a maximum number of Downlink Control Information (DCI) decodable by the wireless device within a time gap of a scheduling cell; the time gap is a slot or a span, multiple scheduled cells are scheduled by a single DCI, and the maximum number of downlink control information (DCI) decodable by the wireless device is determined for each scheduled cell or for each multiple scheduled cells within the slot or span of the scheduling cell, the span being a set of consecutive symbols within a slot used by the wireless device to monitor a physical channel; 4. The method of claim 3, wherein the maximum number of DCIs decodable by the wireless device is one DCI in a slot or span per scheduled cell, and the single DCI used to schedule the first number of PDSCHs or PUSCHs on the first number of scheduled cells is the one DCI for each scheduled cell, or the single DCI used to schedule the first number of PDSCHs or PUSCHs on the first number of scheduled cells is the one DCI for one of the first number of scheduled cells.

10. An apparatus for wireless communication comprising a processor configured to perform the method according to any one of claims 1 to 9.

Images