Method and apparatus for pusch or pdsch scheduling over multiple cells

Abstract

A method, an apparatus, and a computer readable medium for storing instructions are described for a user terminal and a base station for PUSCH or PDSCH scheduling over a plurality of cells. A method performed by a user equipment includes receiving downlink control information (DCI), the downlink control information including scheduling information associated with a respective PUSCH or a respective PDSCH for a cell subset of a plurality of cells, each of the plurality of cells associated with a respective cell index; wherein the DCI comprises: a common field comprising information indicating a first cell index associated with a first cell in the subset of cells and a second cell index associated with a second cell in the subset of cells, where (i) a minimum of the first cell index or the second cell index is greater than a minimum of the plurality of cells, or (ii) the first cell index and the second cell index are not contiguous cell indexes; the first independent field comprises first information in the first type of information; and a second independent field, wherein the second independent field comprises second information in the first type of information; wherein the second independent field follows the first independent field in the DCI; wherein the first information is applicable to a cell with a minimum cell index in a subset of cells; and wherein the second information is applicable to a cell of the subset of cells having a second small cell index; and transmitting a corresponding PUSCH on the subset of cells or receiving a corresponding PDSCH on the subset of cells based on the received DCI.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Indian Application No. 202211034986 filed on June 18, 2022, the contents of which are incorporated by reference as if fully set forth. Background Art

[0003] One of the final work items for 3GPP Release 18 is "Multi-carrier enhancements for NR". A description of the problem statement and the goals of "Multi-carrier enhancements for NR" are described in RP-220834 (3GPP TSG RAN Meeting #95e, Electronic Meeting, March 17-23, 2022), Sections 3 and 4, as reproduced below.

[0004] 3. Reasonableness

[0005] NR supports a wider range of spectrum in different frequency ranges. It is expected that there will be increased spectrum availability in the market for advanced 5G, possibly due to refarming from frequency bands originally used for previous cellular generation networks. Especially for low-frequency FR1 bands, available spectrum blocks tend to be more fragmented and dispersed with narrower bandwidths. For FR2 bands and some FR1 bands, the available spectrum may be wider, making intra-band multi-carrier operation necessary. In order to meet different spectrum requirements, it is important to ensure that these dispersed spectrum bands or wider bandwidth spectrum can be utilized in a more spectrum / power efficient and flexible manner, thereby providing higher throughput and suitable coverage in the network.

[0006] One motivation is to improve flexibility and spectrum / power efficiency with respect to scheduling data over multiple cells including intra-band cells and inter-band cells. The current scheduling mechanism only allows each scheduling DCI to schedule a single cell PUSCH / PDSCH. With more available decentralized spectrum bands or wider bandwidth spectrum, the demand for simultaneous scheduling of multiple cells is expected to increase. In order to reduce control overhead, it is beneficial to extend from single-cell scheduling to multi-cell PUSCH / PDSCH scheduling with a single scheduling DCI. At the same time, the trade-off between overhead savings and scheduling constraints must be considered.

[0007] For multi-carrier UL operation, there are some limitations to the current specification, for example, a 2Tx UE can be configured with a maximum of 2 UL bands, which can only be changed by RRC reconfiguration, and for a 2TX UE, UL Tx switching can only be performed between the 2 UL bands. Dynamically selecting a carrier using UL Tx switching, for example based on data traffic per band, TDD DL / UL configuration, bandwidth and channel conditions rather than RRC-based (multiple) cell reconfiguration, can potentially result in higher UL data rates, spectrum utilization and UL capacity.

[0008] 4. Goals

[0009] 4.1 Objectives of SI or core part Wl or test part Wl

[0010] 1. Specify a solution for multi-cell PUSCH / PDSCH scheduling (one PDSCH / PUSCH per cell) using a single DCI [RAN1]

[0011] ● Identifies the maximum number of cells that can be scheduled simultaneously

[0012] ● Consider both intra-band CA operation and inter-band CA operation

[0013] ● Consider both FR1 and FR2

[0014] ● A single DCI should be optimized for 3 or more cells for multi-cell PUSCH / PDSCH scheduling.

[0015] 2. Study and, if necessary, specify the following enhancements for multi-carrier UL operation [RAN1, RAN2, RAN4]

[0016] ● UL Tx switching scheme across up to 3 or 4 bands with limitation of up to 2 Tx simultaneous transmissions for FR1 UEs, including mechanisms to enable more configured UL bands than their simultaneous transmission capabilities and support dynamic Tx carrier switching across multiple configured bands for both single TAG configuration and multiple TAG configurations (RAN1, RAN4)

[0017] ■UE capability and RRC configuration related signaling (RAN2)

[0018] ■ Note: Pursue a RAN1 / 2 design that is agnostic to the number of frequency bands, i.e. a universal design between 3 and 4 frequency bands

[0019] ■ Note: For UL transmission on a carrier without a corresponding DL carrier, no additional TAG is introduced

[0020] ■ NOTE: This goal does not aim to extend the SUL framework to support more than 1 SUL for 1 NUL

[0021] ● Switching time and other RF aspects, and RRM requirements for the above UL Tx switching schemes across up to 3 or 4 bands (RAN4)

[0022] ■ Note: Prioritizing UL Tx switching across up to 3 bands will be addressed first, and then the case for up to 4 bands can also be addressed. Summary of the invention

[0023] In an embodiment, a wireless communication method performed by a UE includes receiving downlink control information (DCI), the downlink control information including scheduling information associated with a corresponding PUSCH or a corresponding PDSCH for a cell subset of multiple cells, each of the multiple cells being associated with a corresponding cell index. The DCI includes a common field, the common field including information indicating a first cell index associated with a first cell in the cell subset and a second cell index associated with a second cell in the cell subset, wherein (i) the smallest of the first cell index or the second cell index is greater than the smallest cell index among the multiple cells, or (ii) the first cell index and the second cell index are not consecutive cell indexes. The DCI also includes: a first independent field, which includes first information in the first category of information; and a second independent field, which includes second information in the first category of information, wherein the second independent field follows the first independent field in the DCI, wherein the first information is applicable to a cell with a minimum cell index in the cell subset, and wherein the second information is applicable to a cell with a second small cell index in the cell subset, and based on the received DCI, a corresponding PUSCH is transmitted on the cell subset or a corresponding PDSCH is received on the cell subset.

[0024] In an embodiment, the received DCI further includes: a third independent field, the third independent field including the third information in the second type of information; and a fourth independent field, the fourth independent field including the fourth information in the second type of information. The third independent field follows the second independent field in the DCI. The fourth independent field follows the third independent field in the DCI. The third information is applicable to the cell with the smallest cell index in the cell subset, and the fourth information is applicable to the cell with the second small cell index in the cell subset.

[0025] In an embodiment, the received DCI further includes: a third independent field, the third independent field including the third information in the second type of information; and a fourth independent field, the fourth independent field including the fourth information in the second type of information. The third independent field follows the first independent field in the DCI. The second independent field follows the third independent field in the DCI. The fourth independent field follows the second independent field in the DCI. The third information is applicable to the cell with the smallest cell index in the cell subset, and the fourth information is applicable to the cell with the second small cell index in the cell subset.

[0026] In an embodiment, the first common field in the received DCI also includes information indicating a third cell index associated with a third cell in the cell subset, wherein the second cell index and the third cell index are consecutive, and the DCI also includes a third independent field, the third independent field including the third information in the first type of information. The third independent field follows the second independent field in the DCI, and the third information is applicable to the cell with the third small cell index in the cell subset.

[0027] In an embodiment, the received DCI also includes a second common field, which includes information applicable to a subset of cells of the multiple cells. The information applicable to the subset of the multiple cells includes one of DCI format information, downlink dispatch index information, TPC for scheduled PUCCH information, PUCCH resource indicator information, or PDSCH to HARQ timing indicator information. When the information applicable to the subset of the multiple cells includes DCI format information indicating uplink scheduling, the DCI also includes: a third common field, which carries the TPC for the scheduled PUCCH information; and a fourth common field, which carries the PUCCH resource indicator information.

[0028] In an embodiment, the first type of information in the received DCI includes one of new data indicator information, redundancy version information, modulation and coding scheme information, frequency domain resource allocation information, time domain resource allocation information, or HARQ process number information.

[0029] In an embodiment, the DCI is received on a cell other than one of the cells in the subset of cells.

[0030] In an embodiment, the DCI is received on the cell with the smallest cell index in the subset of cells.

[0031] In an embodiment, the wireless communication method performed by the UE also includes receiving RRC signaling. The cell subset is represented by two or more bits in the RRC signaling, and the RRC signaling indicates the relationship between the values ​​of the two or more bits and the cell subset. The RRC signaling includes a cell group ID indicating multiple cells, and also includes corresponding cell indexes of the multiple cells. DCI is received on a cell in the multiple cells, and the RRC signaling also includes a cell index of a cell in the multiple cells on which the DCI is received. The cell group indicated by the cell group ID is a PUCCH cell group. The RRC signaling is included in the ServingCellConfig message.

[0032] In an embodiment, an apparatus includes: one or more processors; one or more transceivers, the one or more transceivers configured to receive downlink control information (DCI) from a base station using the one or more processors, the downlink control information including scheduling information associated with a corresponding PUSCH or a corresponding PDSCH for a cell subset of multiple cells, each of the multiple cells being associated with a corresponding cell index. The DCI includes a common field, the common field including information indicating a first cell index associated with a first cell in the cell subset and a second cell index associated with a second cell in the cell subset, wherein (i) the smallest of the first cell index or the second cell index is greater than the smallest cell index among the multiple cells, or (ii) the first cell index and the second cell index are not consecutive cell indexes. The DCI also includes: a first independent field, which includes first information in the first category of information; and a second independent field, which includes second information in the first category of information, wherein the second independent field follows the first independent field in the DCI, wherein the first information is applicable to a cell with a minimum cell index in the cell subset, and wherein the second information is applicable to a cell with a second small cell index in the cell subset, and one or more transceivers are configured to transmit a corresponding PUSCH on the cell subset or receive a corresponding PDSCH on the cell subset based on the received DCI.

[0033] In an embodiment, the device also includes one or more transceivers configured to receive RRC signaling. The cell subset is represented by two or more bits in the RRC signaling, and the RRC signaling indicates the relationship between the values ​​of the two or more bits and the cell subset. The RRC signaling includes a cell group ID indicating multiple cells, and also includes corresponding cell indexes of the multiple cells. DCI is received on a cell in the multiple cells, and the RRC signaling also includes a cell index of a cell in the multiple cells on which the DCI is received. The cell group indicated by the cell group ID is a PUCCH cell group. The RRC signaling is included in the ServingCellConfig message.

[0034] In an embodiment, a wireless communication method performed by a base station includes transmitting downlink control information (DCI), the downlink control information including scheduling information associated with a corresponding PUSCH or a corresponding PDSCH for a cell subset of multiple cells, each of the multiple cells being associated with a corresponding cell index. The DCI includes a common field, the common field including information indicating a first cell index associated with a first cell in the cell subset and a second cell index associated with a second cell in the cell subset, wherein (i) the smallest of the first cell index or the second cell index is greater than the smallest cell index in the multiple cells, or (ii) the first cell index and the second cell index are not consecutive cell indexes. The DCI also includes: a first independent field, the first independent field including first information in the first type of information; and a second independent field, the second independent field including second information in the first type of information, wherein the second independent field follows the first independent field in the DCI, wherein the first information is applicable to a cell with a smallest cell index in the cell subset, and wherein the second information is applicable to a cell with a second small cell index in the cell subset, and receiving a corresponding PUSCH on the cell subset or transmitting a corresponding PDSCH on the cell subset based on the transmitted DCI.

[0035] In an embodiment, the transmitted DCI further includes: a third independent field, the third independent field including the third information in the second type of information; and a fourth independent field, the fourth independent field including the fourth information in the second type of information. The third independent field follows the second independent field in the DCI. The fourth independent field follows the third independent field in the DCI. The third information is applicable to the cell with the smallest cell index in the cell subset, and the fourth information is applicable to the cell with the second small cell index in the cell subset.

[0036] In an embodiment, the transmitted DCI also includes: a third independent field, the third independent field including the third information in the second type of information; and a fourth independent field, the fourth independent field including the fourth information in the second type of information. The third independent field follows the first independent field in the DCI. The second independent field follows the third independent field in the DCI. The fourth independent field follows the second independent field in the DCI. The third information is applicable to the cell with the smallest cell index in the cell subset, and the fourth information is applicable to the cell with the second small cell index in the cell subset.

[0037] In an embodiment, the first common field in the transmitted DCI also includes information indicating a third cell index associated with a third cell in the cell subset, wherein the second cell index and the third cell index are consecutive, and the DCI also includes a third independent field, the third independent field including the third information in the first type of information. The third independent field follows the second independent field in the DCI, and the third information is applicable to a scheduled cell with a third small cell index in the cell subset.

[0038] In an embodiment, the transmitted DCI also includes a second common field, which includes information applicable to a subset of cells of the multiple cells. The information applicable to the subset of the multiple cells includes one of DCI format information, downlink dispatch index information, TPC for scheduled PUCCH information, PUCCH resource indicator information, or PDSCH to HARQ timing indicator information. When the information applicable to the subset of the multiple cells includes DCI format information indicating uplink scheduling, the DCI also includes: a third common field, which carries the TPC for the scheduled PUCCH information; and a fourth common field, which carries the PUCCH resource indicator information.

[0039] In an embodiment, the first type of information in the transmitted DCI includes one of new data indicator information, redundancy version information, modulation and coding scheme information, frequency domain resource allocation information, time domain resource allocation information, or HARQ process number information.

[0040] In an embodiment, the DCI is transmitted on cells other than one cell in the subset of cells.

[0041] In an embodiment, the DCI is transmitted on the cell with the smallest cell index in the subset of cells.

[0042] In an embodiment, the wireless communication method performed by the base station also includes transmitting RRC signaling. The cell subset is represented by two or more bits in the RRC signaling, and the RRC signaling indicates the relationship between the values ​​of the two or more bits and the cell subset. The RRC signaling includes a cell group ID indicating multiple cells, and also includes corresponding cell indexes of the multiple cells. DCI is transmitted on a cell in the multiple cells, and the RRC signaling also includes a cell index of a cell in the multiple cells on which the DCI is transmitted. The cell group indicated by the cell group ID is a PUCCH cell group. The RRC signaling is included in the ServingCellConfig message.

[0043] In an embodiment, an apparatus includes: one or more processors; one or more transceivers, the one or more transceivers configured to transmit downlink control information (DCI) to a UE using the one or more processors, the downlink control information including scheduling information associated with a corresponding PUSCH or a corresponding PDSCH for a cell subset of multiple cells, each of the multiple cells being associated with a corresponding cell index. The DCI includes a common field, the common field including information indicating a first cell index associated with a first cell in the cell subset and a second cell index associated with a second cell in the cell subset, wherein (i) the smallest of the first cell index or the second cell index is greater than the smallest cell index among the multiple cells, or (ii) the first cell index and the second cell index are not consecutive cell indexes. The DCI also includes: a first independent field, which includes first information in the first category of information; and a second independent field, which includes second information in the first category of information, wherein the second independent field follows the first independent field in the DCI, wherein the first information is applicable to the cell with the smallest cell index in the cell subset, and wherein the second information is applicable to the cell with the second small cell index in the cell subset, and based on the transmitted DCI, the corresponding PUSCH is received on the cell subset or the corresponding PDSCH is transmitted on the cell subset.

[0044] In an embodiment, the device also includes one or more transceivers configured to transmit RRC signaling. The cell subset is represented by two or more bits in the RRC signaling, and the RRC signaling indicates the relationship between the values ​​of the two or more bits and the cell subset. The RRC signaling includes a cell group ID indicating multiple cells, and also includes corresponding cell indexes of the multiple cells. DCI is transmitted on a cell in the multiple cells, and the RRC signaling also includes a cell index of a cell in the multiple cells on which the DCI is transmitted. The cell group indicated by the cell group ID is a PUCCH cell group. The RRC signaling is included in the ServingCellConfig message.

[0045] In an embodiment, a wireless communication method performed by a UE includes receiving RRC signaling for configuring downlink control information (DCI) for scheduling at least two of a plurality of cells for corresponding PUSCH transmission or corresponding PDSCH reception, wherein the RRC signaling includes a cell group ID, whereby the cell group ID indicates a cell group containing a plurality of cells. The RRC signaling may also include one or more of the corresponding cell indexes of the plurality of cells, the cell indexes of the cells configured to receive DCI thereon among the plurality of cells, or a set of co-scheduled cell indicator (CSCI) values. The set of co-scheduled cell indicator (CSCI) values ​​includes a plurality of CSCI values, and each CSCI value is associated with one or more cells. The RRC signaling is received in a (multiple) ServingCellConfig message. The cell group containing a plurality of cells is a PUCCH cell group, wherein if there are a plurality of cell groups configured for a user equipment, a cell is allowed to be part of a PUCCH cell group. The method also includes: receiving DCI for scheduling corresponding PUSCH or corresponding PDSCH for at least two cells among a plurality of cells, wherein the DCI includes a CSCI value; and comparing the CSCI value received in the DCI with the CSCI value received in the RRC signaling, and based on the CSCI value received in the DCI, scheduling at least two cells among the plurality of cells accordingly for corresponding PUSCH transmission or corresponding PDSCH reception.

[0046] In an embodiment, a device comprising: one or more processors; one or more transceivers, the one or more transceivers being configured to receive RRC signaling of downlink control information (DCI) for configuring and scheduling at least two of a plurality of cells for corresponding PUSCH transmission or corresponding PDSCH reception from a base station, wherein the RRC signaling includes a cell group ID, whereby the cell group ID indicates a cell group containing a plurality of cells. The RRC signaling may also include one or more of the corresponding cell indexes of the plurality of cells, the cell indexes of the cells configured to receive DCI thereon in the plurality of cells, or a set of coordinated scheduled cell indicator (CSCI) values. The set of coordinated scheduled cell indicator (CSCI) values ​​includes a plurality of CSCI values, and each CSCI value is associated with one or more cells. The RRC signaling is received in a (multiple) ServingCellConfig message. The cell group containing a plurality of cells is a PUCCH cell group, wherein if there are a plurality of cell groups configured for a user equipment, a cell is allowed to be part of a PUCCH cell group. The apparatus also includes one or more transceivers configured to receive DCI for scheduling corresponding PUSCH or corresponding PDSCH for at least two cells among a plurality of cells, wherein the DCI includes a CSCI value; and one or more processors further configured to compare the CSCI value received in the DCI with the CSCI value received in the RRC signaling and to schedule at least two cells among the plurality of cells accordingly based on the CSCI value received in the DCI for corresponding PUSCH transmission or corresponding PDSCH reception.

[0047] In an embodiment, a non-transitory computer-readable medium includes an instruction operable to cause one or more processors to receive RRC signaling of downlink control information (DCI) for configuring and scheduling at least two of a plurality of cells for corresponding PUSCH transmission or corresponding PDSCH reception from a base station, wherein the RRC signaling includes a cell group ID, whereby the cell group ID indicates a cell group containing a plurality of cells. The RRC signaling may also include one or more of the corresponding cell indexes of the plurality of cells, the cell indexes of the cells configured to receive DCI thereon in the plurality of cells, or a set of co-scheduled cell indicator (CSCI) values. The set of co-scheduled cell indicator (CSCI) values ​​includes a plurality of CSCI values, and each CSCI value is associated with one or more cells. The RRC signaling is received in a (multiple) ServingCellConfig message. The cell group containing a plurality of cells is a PUCCH cell group, wherein if there are a plurality of cell groups configured for a user equipment, a cell is allowed to be part of a PUCCH cell group. The non-transitory computer-readable medium also includes instructions operable to cause one or more processors to perform the following operations: receiving a DCI for scheduling corresponding PUSCH or corresponding PDSCH for at least two cells among a plurality of cells, wherein the DCI includes a CSCI value; and comparing the CSCI value received in the DCI with the CSCI value received in the RRC signaling, and based on the CSCI value received in the DCI, scheduling at least two cells among the plurality of cells accordingly for corresponding PUSCH transmission or corresponding PDSCH reception.

[0048] In an embodiment, a wireless communication method performed by a base station includes transmitting RRC signaling for configuring and scheduling at least two cells in a plurality of cells for downlink control information (DCI) of a corresponding PUSCH or a corresponding PDSCH, wherein the RRC signaling includes a cell group ID, whereby the cell group ID indicates a cell group containing a plurality of cells. The RRC signaling may also include one or more of the corresponding cell indexes of the plurality of cells, the cell indexes of the cells in the plurality of cells configured to transmit DCI thereon, or a set of coordinated scheduled cell indicator (CSCI) values. The set of coordinated scheduled cell indicator (CSCI) values ​​includes a plurality of CSCI values, and each CSCI value is associated with one or more cells. The RRC signaling is transmitted in (multiple) ServingCellConfig messages. A cell group containing a plurality of cells is a PUCCH cell group, wherein if there are a plurality of cell groups configured for a user equipment, a cell is allowed to be part of a PUCCH cell group. The method also includes: transmitting DCI for scheduling corresponding PUSCH or corresponding PDSCH for at least two cells among the multiple cells, wherein the DCI includes a CSCI value; and scheduling at least two cells among the multiple cells for corresponding PUSCH or corresponding PDSCH based on the CSCI value transmitted in the DCI.

[0049] In an embodiment, a device comprising: one or more processors; one or more transceivers, the one or more transceivers being configured to transmit to a UE RRC signaling for configuring downlink control information (DCI) for scheduling at least two of a plurality of cells for corresponding PUSCH or corresponding PDSCH, wherein the RRC signaling includes a cell group ID, whereby the cell group ID indicates a cell group containing a plurality of cells. The RRC signaling may also include one or more of the corresponding cell indexes of the plurality of cells, the cell indexes of the cells configured to transmit DCI thereon in the plurality of cells, or a set of co-scheduled cell indicator (CSCI) values. The set of co-scheduled cell indicator (CSCI) values ​​includes a plurality of CSCI values, and each CSCI value is associated with one or more cells. The RRC signaling is transmitted in (multiple) ServingCellConfig messages. A cell group containing a plurality of cells is a PUCCH cell group, wherein if there are a plurality of cell groups configured for a user equipment, a cell is allowed to be part of a PUCCH cell group. The device also includes one or more transceivers configured to transmit DCI for scheduling corresponding PUSCH or corresponding PDSCH for at least two cells among a plurality of cells, wherein the DCI includes a CSCI value; and one or more processors configured to schedule at least two cells among a plurality of cells for corresponding PUSCH or corresponding PDSCH based on the CSCI value transmitted in the DCI.

[0050] In an embodiment, a non-transitory computer-readable medium includes instructions operable to cause one or more processors to transmit to a UE RRC signaling for configuring and scheduling at least two of a plurality of cells for downlink control information (DCI) of a corresponding PUSCH or a corresponding PDSCH, wherein the RRC signaling includes a cell group ID, whereby the cell group ID indicates a cell group containing a plurality of cells. The RRC signaling may also include one or more of the corresponding cell indexes of the plurality of cells, the cell indexes of the cells configured to transmit DCI thereon in the plurality of cells, or a set of co-scheduled cell indicator (CSCI) values. The set of co-scheduled cell indicator (CSCI) values ​​includes a plurality of CSCI values, and each CSCI value is associated with one or more cells. The RRC signaling is transmitted in (multiple) ServingCellConfig messages. A cell group containing a plurality of cells is a PUCCH cell group, wherein if there are a plurality of cell groups configured for a user equipment, a cell is allowed to be part of a PUCCH cell group. The non-transitory computer-readable medium also includes instructions operable to cause one or more processors to perform the following operations: transmit a DCI for scheduling corresponding PUSCH or corresponding PDSCH for at least two cells among a plurality of cells, wherein the DCI includes a CSCI value; and based on the CSCI value transmitted in the DCI, schedule at least two cells among the plurality of cells for corresponding PUSCH or corresponding PDSCH. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is an architecture of a wireless radio system according to an embodiment.

[0052] Figure 2 is a diagram of a user plane protocol stack in a wireless radio system according to an embodiment.

[0053] Figure 3 is a diagram of a control plane protocol stack in a wireless radio system according to an embodiment.

[0054] Figure 4 is a block diagram of a user equipment according to an embodiment.

[0055] Figure 5 is a block diagram of a base station according to an embodiment.

[0056] Figure 6 is a flow chart showing how a user equipment according to an embodiment may be configured for scheduling DCI of a PUSCH or PDSCH of each cell on each of a plurality of cells.

[0057] Figure 7is a flow chart showing how a base station according to an embodiment may configure a user equipment for scheduling DCI of a PUSCH or a PDSCH of each cell on each of a plurality of cells.

[0058] Figure 8 It is a diagram of the first embodiment related to the scheduling configuration of the cell.

[0059] Fig. 9 It is a diagram of the second embodiment related to the scheduling configuration of the cell.

[0060] Fig.10 It is a diagram of the third embodiment related to the scheduling configuration of the cell.

[0061] Fig.11 It is a diagram of the fourth embodiment related to the scheduling configuration of the cell.

[0062] Fig.12 It is a diagram of the first embodiment related to the configuration of the DCI field format.

[0063] Fig.13 It is a diagram of the second embodiment related to the configuration of the DCI field format.

[0064] Fig.14 It is a diagram of the third embodiment related to the configuration of the DCI field format.

[0065] Fig.15 It is a diagram of the fourth embodiment related to the configuration of the DCI field format.

[0066] Fig.16 It is a diagram of the fifth embodiment related to the configuration of the DCI field format.

[0067] Fig.17 It is a diagram of a sixth embodiment related to the configuration of the DCI field format.

[0068] Fig.18 It is a diagram of the seventh embodiment related to the configuration of the DCI field format.

[0069] Fig.19 It is a diagram of the eighth embodiment related to the configuration of the DCI field format.

[0070] Fig. 20 is a diagram of an embodiment related to how a user equipment performs a method of receiving DCI that schedules a PUSCH or a PDSCH of each cell in each of a plurality of cells.

[0071] Fig.21 is a diagram of an embodiment related to how a base station performs a method of transmitting DCI that schedules a PUSCH or a PDSCH of each cell in each of a plurality of cells. DETAILED DESCRIPTION

[0072] Figure 1 The present invention is a system diagram of a wireless communication system that can be deployed to provide various communication services (such as voice services, packet data, audio, video, etc.). The wireless communication system may include user equipment (UE) (400a, 400b, 400c, 400d, 400e), RAN (100) (radio access network), and a core including a 5G core (200) and / or an LTE core (300). The RAN (100) includes base stations (500a, 500b, 500c, 500d, 500e, 500f) or cells that communicate with the UE (400a, 400b, 400c, 400d, 400e). The LTE core (300) includes core network components such as MME (310), HSS (320), PGW (330) and SGW (340). The 5G core (200) includes various functions such as UPF (220), AMF (210), SMF (230), AUSF (240), NSSF (270), UDM (260), PCF (250) and other functions (280) such as NEF, NRF, AF, etc. The detailed scope and functionality of the LTE (300) and 5G core (200) network components can be identified according to the 3GPP standard specifications including connections to the Internet (110a, 110b), PSTN (120a, 120b) and other networks (130a, 130b). UE (400a, 400b, 400c, 400d, 400e) can refer to the combination of Figure 4 The disclosed UE and base stations (500a, 500b, 500c, 500d, 500e, 500f) may refer to the combined Figure 5 Description of the disclosed base station.

[0073] Throughout the patent specification, a user equipment may be an inclusive concept indicating a terminal utilized in wireless communication, including UE (User Equipment) (400) in Long Term Evolution (LTE), 5G NR, etc.

[0074] A base station (BS) (500) or a cell may generally refer to a station that communicates with a user equipment (UE) (400). A base station (500) may also be referred to as a Node B, an evolved Node B (eNb) (500c, 500d), a gNodeB (gNb) (500a, 500b), MeNb, SeNb, HeNb, a sector, a site, a transmit-receive point (TRP) (500f), a base transceiver system (BTS), an access point, a relay node, an integrated access and backhaul (IAB) node, a remote radio head (RRH) (500e), a radio unit (RU), etc.

[0075] In the patent specification, a base station (500) or a cell may have an inclusive concept indicating a portion of an area covered by a Node B, an evolved Node B (eNb) (500d), a gNodeB (gNb) (500b), MeNb, SeNb, a sector, a site, a base transceiver system (BTS), an access point, a relay node, an integrated access and backhaul (IAB) node, a remote radio head (RRH) (500e), a radio unit (RU), etc. and a function performed thereby. The base station (500) or the cell may include various coverage areas such as a macro cell, a macro cell, a micro cell, a pico cell, a femto cell, a communication range of a relay node, an RRU, an RU, etc.

[0076] exist Figure 2 In the user plane (also known as the data plane) protocol stack and in Figure 3 An exemplary communication between a base station (500) and a UE (400) in a 5G system is disclosed for a control plane protocol stack. A similar protocol stack also exists for UE (400) communications in an LTE system. One difference with respect to the 5G user plane protocol stack is the SDAP layer that only exists in 5G. One difference with respect to the 5G control plane protocol stack is that the NAS signaling is between the UE (400) and the AMF (210), while in LTE the NAS signaling is between the UE (400) and the MME (310).

[0077] like Figure 4As shown, the user equipment (UE) (400) may include a processor (401), a transceiver (402), (multiple) antennas (403), a speaker (404) / microphone (405), a keypad (not shown), a display / touchpad / user interface (406), a memory (non-removable memory or removable memory) (407), a power source (408) (or a battery including a charging circuit), a sensor (such as an accelerometer), an electronic compass, a global positioning system (GPS) chipset, NFC, and other peripherals (410) such as a satellite transceiver, a digital camera (for photos or videos), a universal serial bus (USB) port, a vibration device, a hands-free headset, module, a frequency modulation (FM) radio unit, a multimedia player, a video game console module, an Internet browser, etc. It should be understood that the user equipment (UE) (400) may include any sub-combination of the aforementioned elements.

[0078] The processor (401) may be coupled to all or a subset of the following: transceiver (402), speaker (404) / microphone (405), keypad, display / touchpad / user interface (406), non-removable memory, removable memory, power source (408), sensors (409), and other peripherals (410).

[0079] like Figure 5 As shown, the base station (500) may include a processor (501), a transceiver (502-1, ..., 502-n), an antenna (503-1, ..., 503-n), a memory (non-removable memory or removable memory) (507) and a power supply (508) (or a battery including a charging circuit). The base station (500) may be configured to host modules such as a measurement configuration module (506) for channel measurement for mobility and scheduling, a radio admission control module (509) for UE (400) admission control to the network, a connection mobility control (504) module for handover related processing, a backhaul interface processing module (505) for processing messages received / transmitted to the core network, an Xn interface processing module (510) for processing messages received / transmitted to other base stations, and a scheduler (511) for dynamically allocating resources to UEs in both uplink and downlink. It should be understood that the base station (500) may include any sub-combination of the aforementioned elements.

[0080] The following additional modules may also be hosted by the base station (500): radio resource management for inter-cell radio resource management, radio bearer control, IP header compression, encryption and integrity protection of data, selection of AMF (210) at the UE (400) attachment when the route to AMF (210) cannot be determined based on information provided by the UE (400), routing of user plane data towards (multiple) UPFs, routing of control plane information towards AMF (210), connection establishment and release, scheduling and transmission of paging messages (originated from AMF (210)), scheduling and transmission of system broadcast information (originated from AMF (210) or operation and maintenance), transport level packet marking in uplink, session management, support for network slicing, QoS flow management and mapping to data radio bearers, support for UEs (400a, 400b, 400c, 400d and 400e) in RRC_INACTIVE state, non-access stratum (non-access stratum, NAS) messages, radio access network sharing, dual connectivity, to name a few.

[0081] The processor (401 or 501) can be a general-purpose processor, a digital signal processor (DSP), multiple microprocessors, a single-core or multi-core processor, one or more microprocessors associated with a DSP core, a controller, a microcontroller, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) circuit, any other type of integrated circuit (IC), etc. The processor (401 or 501) can perform signal encoding / decoding, data processing, power control, input / output processing, or any other functionality that enables the user equipment to operate in a wireless environment. The processor (401 or 501) can be coupled to a transceiver (402 or 502-1, ..., 502-n), which can also be coupled to (multiple) antennas (403 or 503-1, ..., 503-n). Although the processor (401 or 501) and the transceiver (402 or 502-1, ..., 502-n) may be separate components, it should be understood that the processor (401 or 501) and the transceiver (402 or 502-1, ..., 502-n) may also be integrated in an electronic package or chip.

[0082] The antenna(s) (403 or 503-1, ..., 503-n) may include multiple antennas or antenna arrays. The antenna(s) (403 or 503-1, ..., 503-n) may be capable of transmitting / receiving over the entire radio spectrum including the millimeter wave spectrum.

[0083] The transceiver (402 or 502-1, ..., 502-n) can be configured to modulate signals to be transmitted by (multiple) antennas (403 or 503-1, ..., 503-n) and demodulate signals received by (multiple) antennas (403 or 503-1, ..., 503-n).

[0084] The memory (407 or 507) may include a non-removable memory or a removable memory. The non-removable memory may include a random-access memory (RAM), a read-only memory (ROM), a hard disk, an SSD, or any other type of memory storage device. The removable memory may include a subscriber identity module (SIM) card, a memory stick, a secure digital (SD) memory card, etc. The memory (407 or 507) may be used to store instructions used by the processor (401 or 501) to perform various user equipment functions (including but not limited to cellular transmission and reception). The cellular transmission and reception functions may include the transmission and reception of physical channels and signals (e.g., PUSCH, PUCCH, PRACH, SRS, DMRS, PDSCH, PBCH, PDCCH, PSS, SSS, DMRS, CSI-RS, and PTRS), or may include the transmission and reception of higher layer data and control signaling (e.g., RRC, MAC, RLC, PDCP, NAS, and SDAP).

[0085] In the present specification, terms such as component carrier (CC) or cell may be used interchangeably. Similarly, terms such as downlink control channel (PDCCH) or downlink control information (DCI) may be used interchangeably.

[0086] Carrier aggregation (CA)

[0087] Carrier aggregation (CA) allows the aggregation of two or more component carriers (CCs) or cells. As a result, a base station can transmit or receive on two or more CCs simultaneously. Similarly, a UE can receive or transmit on two or more CCs simultaneously:

[0088] - A UE with single timing advance capability for CA may simultaneously receive and / or transmit on multiple CCs corresponding to multiple serving cells (multiple serving cells grouped in one TAG) sharing the same timing advance.

[0089] - A UE with multiple timing advance capability for CA can simultaneously receive and / or transmit on multiple CCs corresponding to multiple serving cells with different timing advances (multiple serving cells grouped in multiple TAGs). NG-RAN ensures that each TAG contains at least one serving cell.

[0090] CA is supported for both contiguous CCs and non-contiguous CCs. When CA is deployed, frame timing and SFN are aligned between cells that can be aggregated, or an offset in slot multiples between PCell / PSCell and SCell can be configured. In 5G NR, the maximum number of configured CCs for a UE is 16 for DL ​​and 16 for UL. In LTE, up to 32 CCs can be configured for UL / DL.

[0091] The base station may configure CA based on UE capabilities, UE transmission requirements, and cell channel conditions. The base station may configure itself to perform CA. The BS may then send RRC signaling to the UE to configure the UE for the purpose of CA. The UE may be configured to perform CA via RRC signaling received from the base station.

[0092] The UE may also be configured to perform CA with two base stations in a dual connectivity scenario.

[0093] Cross-carrier scheduling

[0094] In conventional cross-carrier scheduling, the Carrier Indicator Field (CIF) allows the PDCCH of a serving cell to schedule resources on another serving cell, but with the following restrictions:

[0095] -When cross-carrier scheduling from SCell to PCell is not configured, PCell can only be scheduled via its PDCCH;

[0096] -When cross-carrier scheduling from SCell to PCell is configured:

[0097] -The PDCCH on the SCell can schedule the PDSCH and PUSCH of the PCell;

[0098] -The PDCCH on the PCell can schedule the PDSCH and PUSCH of the PCell, but cannot schedule the PDSCH and PUSCH on any other cell;

[0099] -Only one SCell can be configured to be used for cross-carrier scheduling to the PCell.

[0100] -When an SCell is configured with a PDCCH, the PDSCH and PUSCH of the cell are always scheduled by the PDCCH on the SCell;

[0101] -When an SCell is not configured with a PDCCH, the PDSCH and PUSCH of the SCell are always scheduled by the PDCCH on another serving cell;

[0102] - The scheduling PDCCH and the scheduled PDSCH or PUSCH may use the same or different numerologies.

[0103] The current specification enables a UE to receive a single DCI from a base station for scheduling PUSCH or PDSCH of each cell on each of multiple cells. A single DCI can schedule multiple cells across carriers, or self-schedule along with scheduling one or more other cells across carriers. Configuring a base station (BS) and UE with CA and cross-carrier scheduling

[0104] The BS may configure itself to perform CA. The BS may then send RRC signaling to the UE to configure the UE for the purpose of CA. The UE may be configured to perform CA via RRC signaling received from the base station. The RRC signaling may include parameters such as CellGroupConfig for adding additional SCells. The RRC signaling may include a parameter sCellToAddModList for adding cells.

[0105] Further, the BS may configure itself to perform cross-carrier scheduling. Then, in order to configure the UE for the purpose of cross-carrier scheduling, the BS may send RRC signaling to the UE. The UE may be configured to perform cross-carrier scheduling by RRC signaling received from the base station. The RRC signaling may include a CrossCarrierSchedulingConfig parameter to indicate which SCell or PCell (primary cell) the secondary cell (SCell) is cross-carrier scheduled by. The RRC signaling may also include signaling for configuring the PCell to be cross-carrier scheduled by another SCell.

[0106] According to the embodiment, Figure 6As shown, a UE receives signaling for configuring carrier aggregation (CA) (600) from a base station, and the UE configures itself for CA. The UE may also receive signaling for configuring DCI (610) for scheduling PUSCH or PDSCH of each cell on each of a plurality of cells from the base station, and the UE configures itself for DCI for scheduling PUSCH or PDSCH of each cell on each of a plurality of cells. The UE may be configured for CA (600) and DCI (610) for scheduling PUSCH or PDSCH on a plurality of cells using one or more RRC messages transmitted by one or more base stations (e.g., during initial configuration of CA or during reconfiguration of CA). Once the UE is configured with CA (600) and DCI (610) for scheduling PUSCH or PDSCH of each cell on each of a plurality of cells, the UE may receive a PDCCH (620) containing DCI for scheduling a plurality of cells, and based on the received DCI, the UE may transmit / receive PUSCH or PDSCH (630) on the scheduled cells.

[0107] Further, in step 620, the UE may receive a PDCCH (such as a DCI (800) for scheduling multiple cells (840, 850, 860)) on the scheduling cell (840). Figure 8 ), for self-scheduling PUSCH or PDSCH (810) and cross-carrier scheduling PUSCH or PDSCH (820, 830) on other co-scheduled cells (850, 860). Alternatively, the UE may receive a PDCCH (as shown in the scheduling cell (930)) containing DCI (900) for scheduling multiple cells (940, 950). Fig. 9 ), which is used to schedule PUSCH or PDSCH (910, 920) across carriers on other coordinated scheduled cells (940, 950). The format of DCI (800, 900) can refer to the combined Figures 12 to 19 One of the DCI formats disclosed in the embodiments.

[0108] In another embodiment, the UE receives (multiple) RRC configuration messages for configuring CA (600) and DCI (610) for scheduling PUSCH or PDSCH of each cell in each of the plurality of cells from a base station different from the base station that transmits the PDCCH (620) containing DCI for scheduling PUSCH or PDSCH of each cell in each of the plurality of cells. The UE may transmit PUSCH to / receive PDSCH from the base station from which the DCI is received (630) (S120).

[0109] In another embodiment, the UE receives (multiple) RRC configuration messages for configuring CA (600) and scheduling DCI (610) for PUSCH or PDSCH of each cell on each of the multiple cells from the same base station that transmits the PDCCH (620) containing DCI for scheduling PUSCH or PDSCH on multiple cells.

[0110] According to the embodiment, Figure 7 As shown, the base station transmits signaling for configuring CA (700) in the UE and DCI (710) for scheduling PUSCH or PDSCH of each cell in each of the multiple cells using a single DCI configuration in the UE. The base station can use one or more RRC messages (e.g., during initial configuration of CA or during reconfiguration of CA) to configure CA (700) and DCI (710) for scheduling PUSCH or PDSCH of each cell in each of the multiple cells. Once the UE is configured with CA based on the signaling received in 700, and is configured with DCI for scheduling PUSCH or PDSCH of each cell on each of the multiple cells based on the signaling received in 710, the base station can transmit a PDCCH (720) containing DCI for scheduling the multiple cells, and based on the transmitted DCI, the base station can receive / transmit PUSCH / PDSCH from / to the UE on the multiple cells configured by the DCI for scheduling PUSCH or PDSCH of each cell on each of the multiple cells (730).

[0111] Further, in step 720, the base station may transmit a PDCCH (such as a DCI (800) for scheduling multiple cells (840, 850, 860)) on the scheduling cell (840). Figure 8 ), and the UE may receive a PDCCH (as shown) containing DCI (800) for scheduling multiple cells (840, 850, 860) on the scheduling cell (840). Figure 8 ), for self-scheduling PUSCH or PDSCH (810) and cross-carrier scheduling PUSCH or PDSCH (820, 830) on other co-scheduled cells (850, 860). Alternatively, the UE may receive a PDCCH (as shown in the scheduling cell (930)) containing DCI (900) for scheduling multiple cells (940, 950). Fig. 9 ), which is used to schedule PUSCH or PDSCH (910, 920) across carriers on other coordinated scheduled cells (940, 950). The format of DCI (800, 900) can refer to the combined Figures 12 to 19 One of the DCI formats disclosed in the described embodiments.

[0112] In another embodiment, the base station transmits (multiple) RRC configuration messages for configuring the UE with CA (700) and DCI (710) for scheduling PUSCH or PDSCH of each cell on each of the plurality of cells, which is different from the base station transmitting a PDCCH (720) containing DCI for scheduling PUSCH or PDSCH of each cell on each of the plurality of cells. The same base station can receive PUSCH or PDSCH (730) from the UE that transmitted the DCI (720), or transmit PUSCH or PDSCH (730) to the UE that transmitted the DCI (720).

[0113] In another embodiment, the base station transmits (multiple) RRC configuration messages for configuring the UE with CA (700) and DCI (710) for scheduling PUSCH or PDSCH for each cell on each of the multiple cells, which is the same as the base station transmitting a PDCCH (720) containing DCI for scheduling PUSCH or PDSCH for each cell on each of the multiple cells.

[0114] UE configuration for a single DCI for scheduling a PUSCH per cell on each of multiple cells or scheduling a PDSCH per cell on each of multiple cells.

[0115] Due to the support of dynamic spectrum sharing (DSS) between NR cells and LTE cells in NR Release 15, it is expected that NR UEs will outnumber LTE UEs over time. Existing DSS features need to be enhanced to address the growing number of NR UEs. A possible enhancement to reduce the load on the shared carrier is to offload the downlink control channel (PDCCH) of the shared carrier to another carrier. If the PCell is deployed in the shared carrier, this can be achieved by scheduling the PCell across carriers from the SCell. Although scheduling the PCell across carriers from the SCell reduces the load on the PCell, it may add more PDCCH monitoring load on the SCell. In order to reduce the PDCCH monitoring load on the SCell, it may be advantageous to support a single DCI on the SCell for scheduling the PUSCH or PDSCH of each cell on each of multiple cells. By using a single DCI for scheduling the PUSCH or PDSCH of each cell on each of multiple cells, the number of monitored PDCCHs is reduced, and the PDCCH blocking probability is also reduced.

[0116] Although the problem of PCell PDCCH monitoring while deployed in DSS spectrum can be solved by using a single DCI that schedules PUSCH or PDSCH for each cell on each of multiple cells, the solution is not limited to DSS spectrum. Similar benefits can be achieved for cells deployed in FR1, FR2-1, FR2-2, and combinations thereof. Further, it may be beneficial to use a single DCI that schedules PUSCH or PDSCH for each cell on each of multiple cells across RATs (e.g., an LTE cell that schedules an NR cell, and vice versa).

[0117] Some of the advantages of using a single DCI that schedules the PUSCH or PDSCH of each cell on each of multiple cells include the following:

[0118] ● PDCCH overhead can be reduced. For example, CRC bits and common DCI bits (Type 1 DCI field) between the scheduling cell(s) and the scheduled cell can be preserved.

[0119] ● The PDCCH resources on the scheduled cell can be reused for PDSCH / PUSCH transmission.

[0120] • On the UE side, less PDCCH processing may be required compared to the scenario where multiple PDCCHs are needed for scheduling multiple PUSCHs or PDSCHs.

[0121] In an embodiment, the UE may receive signaling from the base station to configure the small bandwidth scheduling cell and the ultra-wide bandwidth scheduled cell in the UE, so that as a result of reducing the PDCCH monitoring opportunity due to the smaller bandwidth of the scheduling cell, the UE power can be saved. Additionally, the UE may receive signaling from the base station to configure the UE to not monitor the PDCCH for single-cell PUSCH or PDSCH scheduling when it is configured to monitor the PDCCH for scheduling the PUSCH or PDSCH of each cell on each of the multiple cells, so that the UE power can be saved.

[0122] In an embodiment, the base station may be configured to transmit signaling to configure the UE to have a small bandwidth scheduling cell and an ultra-wide bandwidth scheduled cell, so that as a result of reducing the PDCCH monitoring opportunity due to the smaller bandwidth of the scheduling cell, UE power can be saved. Additionally, the base station may be configured to transmit signaling to configure the UE to not monitor the PDCCH for single-cell PUSCH or PDSCH scheduling when it is configured to monitor the PDCCH for scheduling the PUSCH or PDSCH of each cell on each of the multiple cells, so that UE power can be saved.

[0123] In another embodiment, a single DCI for scheduling a PUSCH or PDSCH per cell on each of a plurality of cells has at least one of the following UE configurations:

[0124] ●DCI on the PCell self-schedules PUSCH or PDSCH on the PCell, and cross-carrier schedules PUSCH or PDSCH on (multiple) other SCells.

[0125] ●DCI on PCell schedules PUSCH or PDSCH across carriers on SCell.

[0126] ● The DCI on the SCell schedules PUSCH or PDSCH across carriers on the PCell, and schedules PUSCH / PDSCH across carriers on (multiple) other SCells.

[0127] ●DCI on an SCell schedules PUSCH or PDSCH across carriers on other SCells.

[0128] ● DCI self-scheduling PUSCH or PDSCH on SCell, and cross-carrier scheduling of PUSCH or PDSCH on PCell and / or cross-carrier scheduling of other PUSCH or PDSCH on (multiple) SCells.

[0129] In another embodiment, the scheduling cell and the scheduled cell may be intra-band cells. In another embodiment, the scheduling cell and the scheduled cell may be inter-band cells. In another embodiment, the scheduling cell and the scheduled cell may include a combination of inter-band cells and intra-band cells.

[0130] In another embodiment, the scheduling cell and the scheduled cell may belong to the same RAT (Radio Access Technology), including, for example, LTE or NR. In another embodiment, the scheduling cell and the scheduled cell may belong to different RATs, such as an LTE scheduling cell and an NR scheduled cell, or an NR scheduling cell and an LTE scheduled cell, or a combination of an LTE or NR scheduling cell and an LTE scheduled cell and an NR scheduled cell.

[0131] In another embodiment, DCI for scheduling the PUSCH or PDSCH of each cell on each of the multiple cells may be received on two or more scheduling cells to reduce the PDCCH monitoring load on a single scheduling cell.

[0132] In another embodiment, the BS may configure itself to allow the co-scheduled cell group to be scheduled only on a single scheduling cell. Then, for the purpose of configuring the UE to allow the co-scheduled cell group to be scheduled only on a single scheduling cell, the BS may send RRC signaling to the UE. The UE may configure itself to allow the co-scheduled cell group to be scheduled only on a single scheduling cell.

[0133] In another embodiment, the UE can be configured to receive multiple DCIs based on RRC signaling received from the base station, each DCI scheduling a different group of scheduled cells, so that each of the multiple DCIs can be received on its corresponding scheduling cell, so that the scheduling cells receiving the DCIs are different from each other.

[0134] In another embodiment, for simplicity, the UE may be configured to receive DCI for scheduling PUSCH on multiple cells or scheduling PDSCH on multiple cells based on RRC signaling received from the base station. Simultaneous scheduling of PUSCH and PDSCH is not allowed between co-scheduled cells.

[0135] In another embodiment, the DCI on the unlicensed cell may schedule the PUSCH or PDSCH of each cell on each of a plurality of unlicensed co-scheduled cells, or the unlicensed cell may schedule a plurality of unlicensed and licensed co-scheduled cells, or the licensed cell may schedule a plurality of unlicensed and / or licensed co-scheduled cells. An advantage of using DCI on an unlicensed cell to schedule multiple cells may be that in 5G NR, multiple unlicensed bands are now available with wider bandwidths, including bands 46, 96, and 60 GHz unlicensed bands in the FR2-2 spectrum. In another embodiment, the UE may not be configured for scheduling an unlicensed cell of a set of co-scheduled licensed and / or unlicensed cells, since an LBT failure may affect the scheduling of multiple cells, resulting in reduced throughput.

[0136] In another embodiment, DCI for scheduling the PUSCH or PDSCH of each cell on each of the multiple cells is monitored by the UE in a user-specific search space.

[0137] In another embodiment, the scheduling cell may schedule multiple cells other than the scheduling cell, wherein the same carrier type (FDD or TDD, licensed or unlicensed, FR1 or FR2-1 or FR2-2) is used between all the co-scheduled cells, and these co-scheduled cells may have the same or different subcarrier spacing (SCS) as the scheduling cell. The SCS of the co-scheduled cells may also be configured to be the same or different.

[0138] In another embodiment, the scheduling cell may schedule multiple cells other than the scheduling cell, where different carrier types (FDD or TDD, licensed or unlicensed, FR1 or FR2-1 or FR2-2) are used between all co-scheduled cells, and these co-scheduled cells may be the same or different from the SCS of the scheduling cell. The SCS of the co-scheduled cells may be configured to be the same or different.

[0139] In another embodiment, the scheduling cell may schedule multiple cells including the scheduling cell, wherein the same or different carrier types (FDD or TDD, licensed or unlicensed, FR1 or FR2-1 or FR2-2) are used between all co-scheduled cells. The SCSs of the co-scheduled cells may be configured to be the same or different.

[0140] Send a signal to the coordinated scheduling cell

[0141] According to an embodiment, a signaling mechanism for indicating to a UE which cells are scheduled according to a single DCI is disclosed. The BS may configure itself to have carrier aggregation (CA) and cross-carrier scheduling. Then, for the purpose of configuring the UE to have carrier aggregation (CA) and cross-carrier scheduling, the BS may send RRC signaling to the UE. The UE may configure itself to have carrier aggregation (CA) and cross-carrier scheduling based on the received RRC signaling.

[0142] In conventional CA mechanisms, the Carrier Indicator Field (CIF) in DCI corresponds to one scheduled cell. In order to schedule PUSCH / PDSCH on two or more cells via a single DCI, a new indicator field (CSCI field) indicating a co-scheduled cell is disclosed below according to an embodiment.

[0143] In an embodiment, a bitmap may be used for a co-scheduled cell indicator (CSCI) field, where each bit represents a cell. As will be appreciated by one of ordinary skill in the art, the technique will increase the number of CSCI bits required as the number of cells to be scheduled according to a single DCI increases. However, for a smaller number of co-scheduled cells, the technique may provide a simple option for scheduling multiple cells. Table 1 provides an example of a bitmap encoding for a 3-bit CSCI, where each bit corresponds to a cell. In the following example, the LSB corresponds to cell 2, the middle bit corresponds to cell 3, and the MSB corresponds to cell 4. In this example, a DCI signal is received on cell 1. It will be appreciated by one of ordinary skill in the art that more or fewer bits may be used to signal more or fewer scheduling arrangements, and the bits therein may correspond to cells different from those shown in Table 1.

[0144] Table 1

[0145] 3 CSCIs definition 000 Self-scheduling cell 1 001 Cross-dispatching cell 2 010 Cross-dispatching cell 3 011 Cross-scheduling of cells 2 and 3 100 Cross-dispatching cell 4 101 Cross-scheduling of Cell 2 and Cell 4 110 Cross-scheduling of cells 3 and 4 111 Cross-scheduling of cells 2, 3 and 4

[0146] In another embodiment, the method of scheduling multiple cells using a single DCI may include the following steps:

[0147] ● receiving downlink control information (DCI) on a cell for scheduling at least a plurality of other cells;

[0148] ● wherein the DCI comprises a bitmap comprising a plurality of bit positions;

[0149] • wherein each bit position of the plurality of bit positions corresponds to a respective cell among a plurality of other cells;

[0150] • Wherein the presence of 1 bit in one of the plurality of bit positions indicates that the corresponding cell indicated by the bit position among the plurality of other cells is scheduled.

[0151] A more specific embodiment of this broader concept is described in conjunction with Table 1. However, those skilled in the art will appreciate that the number of bits represented is for exemplary purposes only and that other numbers of bits may be used.

[0152] In another embodiment, Table 1 may be modified to include additional self-scheduling scenarios for scheduling at least 2 cells, as shown in Table 2. Those of ordinary skill in the art will appreciate that more or fewer bits may be used to signal more or fewer scheduling arrangements, and that the bits therein may correspond to cells different from those shown in Table 2.

[0153] Table 2

[0154] 3 CSCIs definition 000 Self-scheduling cell 1 001 Self-scheduling cell 1 and cross-scheduling cell 2 010 Self-scheduling cell 1 and cross-scheduling cell 3 011 Self-scheduling cell 1 and cross-scheduling cells 2 and 3 100 Self-scheduling cell 1 and cross-scheduling cell 4 101 Self-scheduling cell 1 and cross-scheduling cells 2 and 4 110 Self-scheduling cell 1 and cross-scheduling cells 3 and 4 111 Self-scheduling cell 1 and cross-scheduling cells 2, 3 and 4

[0155] The advantage of using the above 3-bit CSCI is that it covers self-scheduling for a single cell as well as self-scheduling and cross-carrier scheduling for scheduling up to 3 cells.

[0156] In another embodiment, the method of scheduling multiple cells using a single DCI may include the following steps:

[0157] ● receiving downlink control information (DCI) on a cell for scheduling the cell and a plurality of other cells;

[0158] ● wherein the DCI comprises a bitmap having a plurality of bit positions;

[0159] • wherein a respective bit position of the plurality of bit positions corresponds to a respective cell among a plurality of other cells;

[0160] • Wherein the presence of 1 bit at a corresponding bit position among a plurality of bit positions indicates that the corresponding cell corresponding to the bit position among a plurality of other cells and the cell on which the DCI is received is scheduled.

[0161] A more specific embodiment of this broader concept is described in conjunction with Table 2. However, those skilled in the art will appreciate that the number of bits represented is for exemplary purposes only and that other numbers of bits may be used.

[0162] In another embodiment, Table 2 can be further modified to include self-scheduling cell 1 in all combinations. This can facilitate scheduling up to 4 cells using a 3-bit CSCI.

[0163] Further, similar to Table 1 and Table 2, more tables may be created for additional CSCI bits (such as 4, 5, and 6 bits) to enable scheduling of more cells.

[0164] In another bitmap embodiment, each bit indicates self-scheduling or cross-carrier scheduling for a given cell. For scheduling 4 cells, 4 bits are allocated, each of which indicates self-scheduling or cross-carrier scheduling. Similarly, for scheduling 3 cells, a 3-bit bitmap can be used.

[0165] In another embodiment, instead of using a bitmap, an encoding as shown in Table 3 may be used. One of ordinary skill in the art will appreciate that more or fewer bits may be used to encode more or fewer scheduling arrangements, and the bits may correspond to cells different from those shown in Table 3.

[0166] Table 3

[0167] 3 CSCIs definition 000 Self-scheduling cell 1 001 Cross-dispatching cell 2 010 Cross-dispatching cell 3 100 Cross-dispatching cell 4 011 Cross-scheduling of cells 2 and 3 101 Cross-scheduling of Cell 2 and Cell 4 110 Cross-scheduling of cells 3 and 4 111 Cross-scheduling of cells 2, 3 and 4

[0168] In another embodiment, the method of scheduling multiple cells using a single DCI may include the following steps:

[0169] ● receiving downlink control information (DCI) on a cell for scheduling multiple other cells;

[0170] ● wherein the DCI includes a plurality of bits for identifying a plurality of other cells;

[0171] • wherein the first non-zero bit sequence indicates that a first cell among a plurality of other cells is scheduled; and

[0172] • Wherein the second non-zero bit sequence indicates that a first cell among the plurality of other cells and a second cell among the plurality of other cells are scheduled.

[0173] A more specific embodiment of this broader concept is described in conjunction with Table 3. However, those skilled in the art will appreciate that the number of bits represented is for exemplary purposes only and that other numbers of bits may be used.

[0174] In another embodiment, Table 3 may be modified to include additional self-scheduling scenarios for scheduling at least 2 cells, as shown in Table 4.

[0175] Table 4

[0176] 3 CSCIs definition 000 Self-scheduling cell 1 001 Self-scheduling cell 1 and cross-scheduling cell 2 010 Self-scheduling cell 1 and cross-scheduling cell 3 011 Self-scheduling cell 1 and cross-scheduling cell 4 100 Self-scheduling cell 1 and cross-scheduling cells 2 and 3 101 Self-scheduling cell 1 and cross-scheduling cells 2 and 4 110 Self-scheduling cell 1 and cross-scheduling cells 3 and 4 111 Self-scheduling cell 1 and cross-scheduling cells 2, 3 and 4

[0177] In another embodiment, the method of scheduling multiple cells using a single DCI may include the following steps:

[0178] ● receiving downlink control information (DCI) on a cell for scheduling the cell and a plurality of other cells;

[0179] ● wherein the DCI includes a plurality of bits for identifying a plurality of other cells;

[0180] • wherein the first non-zero bit sequence indicates that the first cell among the plurality of other cells and the cell on which the DCI is received is self-scheduled; and

[0181] • Wherein the second non-zero bit sequence indicates that a first cell among the plurality of other cells and a second cell among the plurality of other cells and the cell on which the DCI is received are scheduled.

[0182] A more specific embodiment of this broader concept is described in conjunction with Table 4. However, those skilled in the art will appreciate that the number of bits represented is for exemplary purposes only and that other numbers of bits may be used.

[0183] In another embodiment, when the UE is configured to schedule multiple cells using only cross-carrier scheduling, Table 3 may be modified to include a cross-carrier scheduling entry in place of a self-scheduling entry.

[0184] Table 4 can be modified to include self-scheduling cell 1 to all combinations. This can help schedule up to 4 cells using 3-bit CSCI.

[0185] Further, as with Tables 3 and 4, more tables may be created for additional CSCI bits (such as 4, 5, and 6 bits) to enable scheduling of more cells.

[0186] In another embodiment, the CSCI field may include a 1-bit flag and a 3-bit CSCI field, wherein the 1-bit flag indicates whether the DCI schedules multiple cells or a single cell. If the 1-bit flag indicates scheduling for multiple cells, the 3-bit CSCI field is interpreted as an indicator of a co-scheduled cell, and if the 1-bit flag indicates single-cell scheduling, the 3-bit CSCI field is interpreted as a CIF field for single-cell scheduling.

[0187] In another embodiment, an RRC signaling mechanism may be used to indicate to the UE which cells are scheduled according to a single DCI. A method of creating a cell group for simultaneous scheduling is disclosed, wherein the cell group is created during a (re)configuration step of cells in the UE. Before configuring the UE for PUSCH or PDSCH scheduling on multiple cells (one PDSCH or PUSCH per cell) with a single DCI, a predefined cell group may be created. For the purpose of creating a cell group, the following may be considered:

[0188] ●Intra-band cell grouping: The scheduling cell and the scheduled cell belong to the same frequency band.

[0189] ●Inter-band cell grouping: The scheduling cell belongs to one frequency band, while the scheduled cell belongs to a different frequency band.

[0190] ●Mixed cell grouping: the scheduling cell and some scheduled cells belong to the same frequency band, while other scheduled cells belong to different frequency bands.

[0191] The advantage of using intra-band cell grouping is that intra-band cells have more commonalities in terms of DCI fields, and these commonalities help reduce overhead. The advantage of using inter-band cell grouping is that the scheduling cell is deployed in a frequency band where there may be less interference or a higher probability of PDCCH blind detection than other scheduled cells, resulting in better PUSCH or PDSCH throughput. The advantages of both intra-band cell grouping and inter-band cell grouping can be combined in hybrid cell grouping.

[0192] In another embodiment, a BS (e.g., in combination with Figure 5 A BS disclosed in the description of the ) may configure itself to have a cell group for scheduling a PUSCH or PDSCH of each cell on each of the multiple cells with a single DCI. A separate cell group may also be configured for PUSCH or PDSCH scheduling. Then, for the purpose of configuring a UE for scheduling a PUSCH or PDSCH of each cell on each of the multiple cells with a single DCI, the BS may send a message to the UE (e.g., in combination with Figure 4 The UE disclosed in the description of the present invention) sends RRC signaling (for example, in Figure 6 610 or Figure 7 710 of ). The UE may configure itself as a cell group having a PUSCH or PDSCH for scheduling each cell on each of the multiple cells using a single DCI based on RRC signaling. The RRC signaling may include one or more of the following:

[0193] ●Cell Group ID

[0194] ●Configure the index of the cells in the group

[0195] ●Scheduling cell index

[0196] RRC signaling may include one or more of the above parameters in the CrossCarrierSchedulingConfig or ServingCellConfig message. Moreover, regarding the ServingCellConfig of each serving cell, an IE indicating that multiple cells are scheduled using a single DCI may be included, which configures whether the cell is scheduled by the DCI that schedules multiple cells.

[0197] The cell group ID may indicate a cell group containing multiple cells or a cell group containing a subset of multiple cells. When multiple cell groups are configured in the UE by the base station, the cell group ID helps to identify the cell group. When multiple cell groups are configured, the RRC signaling may include multiple cell group IDs. The RRC signaling may also include the number of cell groups configured to schedule the PUSCH or PDSCH of each cell on each of the multiple cells using a single DCI.

[0198] The indices of the cells in the configured cell group in the RRC signaling may be arranged in ascending order of the cell indices. For example, the RRC signaling containing the cell indices is as disclosed in the description in conjunction with Table 5.

[0199] In another embodiment, the co-scheduled cells are identified according to RRC signaling that configures the UE to schedule the PUSCH or PDSCH of each cell on each of the multiple cells using a single DCI.

[0200] In another embodiment, the BS may associate the scheduling cell with the scheduled cells in the group and provide RRC signaling to the UE to indicate the index of the cell in the cell group. Once the cell group is configured to schedule the PUSCH or PDSCH of each cell on each of the multiple cells using a single DCI, then the DCI received on the scheduling cell for scheduling any cell in the cell group may schedule all cells in the group. For example, a DCI received on the scheduling cell for self-scheduling PUSCH or PDSCH on any cell in the group or cross-carrier scheduling PUSCH or PDSCH also implicitly indicates that PUSCH or PDSCH is scheduled on other cells in the group.

[0201] In another embodiment, an RNTI may be defined to indicate to the UE a PDCCH containing DCI for scheduling a PUSCH or PDSCH of each cell in each of the multiple cells. The RNTI used to indicate the PDCCH for scheduling multiple cells is different from the (multiple) RNTIs used for self-scheduling or cross-carrier scheduling on a single cell.

[0202] In another embodiment, for a simplified design in terms of PDCCH monitoring capability and RRC configuration, only one cell is allowed to be part of a cell group. A PUCCH cell group may also be configured as a cell group for scheduling PUSCH or PDSCH of each cell on each of multiple cells with a single DCI.

[0203] In another embodiment, the CSCI field in the DCI format points to the scheduled cell group. The scheduled cell group acts as a virtual cell. The association of the scheduled cell group can be pre-configured in the UE through RRC signaling transmitted by the base station. There may be multiple scheduled cell groups configured in the UE. The association of the scheduled cell group can be semi-statically configured and can be reconfigured through RRC signaling.

[0204] In another embodiment, the scheduled cells follow a predefined combination configured to the UE via RRC signaling. For example, a cell corresponding to cell index = 001 and a cell corresponding to cell index 010, 011, etc. can be bundled together. In this case, the CSCI field indicates that a cell can also schedule multiple cells. The cell bundling configuration can be semi-static and can be updated as required.

[0205] In another embodiment, the scheduled cells may be configured to be scheduled by DCI that schedules multiple cells in only one scheduling cell.

[0206] In another embodiment, in order to limit the DCI size, the maximum number of scheduled cells configured by RRC configuration for scheduling PUSCH or PDSCH of each cell on each of multiple cells in the UE is selected from the set of {2, 3, 4}. Depending on the configuration of the selected maximum number of cells, various combinations of co-scheduled cells (for example, as shown in Table 5) can be formed for co-scheduling PUSCH or PDSCH on multiple cells.

[0207] In another embodiment, the method of scheduling multiple cells using a single DCI may include the following steps:

[0208] • receiving an RRC message including information associating a first value with a first plurality of cells and associating a second value with a second plurality of cells; and

[0209] ● Receiving downlink control information (DCI) after receiving the RRC message, the DCI including the first value or the second value for scheduling a plurality of cells indicated by the first value or the second value.

[0210] A more specific embodiment of this broader concept is described in conjunction with Table 5. However, those skilled in the art will appreciate that the number of bits represented is for exemplary purposes only and that other numbers of bits may be used.

[0211] In another embodiment, a BS (e.g., in combination with Figure 5 The BS disclosed in the description of the ) can configure a set of co-scheduled cell indicator (CSCI) values ​​and associate each CSCI value with one or more cells as presented in the exemplary Table 5. The BS then provides a method for UEs (e.g., in conjunction with Figure 4 The disclosed UE is configured with a set of CSCI values ​​and RRC signaling of one or more associated cells (e.g., Figure 7 As shown in Table 5, the cell values ​​in each row may be arranged in ascending order of the cell index. Further, as shown in Table 5, the RRC signaling includes a configuration for each row of the table, including a corresponding combination of a CSCI value and a co-scheduled cell. The RRC signaling may also include the number of rows, for example, in Table 5, 8 rows are indicated. The UE may select a cell based on the received RRC signaling (e.g., in Figure 6 610 of ) configures itself to have a set of co-scheduled cell indicator (CSCI) values, and stores the received set of CSCI values ​​and the associated cell combination, wherein each CSCI value in the set corresponds to a cell combination. Table 5 below shows one such example of 3-bit (0-7) CSCI values. It will be appreciated by those of ordinary skill in the art that more or fewer bits may be used to signal more or fewer scheduling arrangements, and the bits therein may correspond to cells different from those shown in Table 5.

[0212] Table 5

[0213] CSCI Dispatched cell 0 Community 1, Community 2 1 Community 1, Community 3, Community 4 2 Community 2, Community 3 … … 7 Community 1, Community 2, Community 3, Community 4

[0214] The DCI (620, 720) for scheduling the UE for the PUSCH or PDSCH of each cell on each of the multiple cells may include a CSCI value in the DCI for indicating a cell combination from a cell combination set configured by RRC. The UE may extract the CSCI value and identify the cell to which the received DCI is applicable and the cell combination received from the BS by comparing it with the stored CSCI value, and transmit / receive the PUSCH or PDSCH on each of the identified cells accordingly (630, 730). The DCI format for scheduling the UE for the PUSCH or PDSCH of each cell on each of the multiple cells may refer to the combination of Figures 12 to 19 Any one of the DCI formats disclosed in the described embodiments.

[0215] Enhancements to DCI format for scheduling PUSCH or PDSCH per cell on each of multiple cells

[0216] For scheduling PUSCH or PDSCH of each cell on each of multiple cells using a single DCI, different DCI formats can be used for scheduling. The DCI format design can consider the scheduling tradeoff between DCI scheduling efficiency and scheduling flexibility:

[0217] ●For intra-band CA, the focus may be more on DCI scheduling efficiency because intra-band carriers may have the same channel properties.

[0218] ●For inter-band CA, the focus may be more on scheduling flexibility, because due to different channel properties, inter-band carriers may require different physical layer configurations for better data transmission efficiency.

[0219] If the scheduled cells are in different frequency bands and have different bandwidths / numbering schemes, more DCI fields may need to be independent, while if the scheduled cells are in the same frequency band, more DCI fields may be joint / common.

[0220] In an embodiment, the size of the DCI for scheduling the PUSCH or PDSCH of each cell on each of the multiple cells is selected as the minimum DCI size according to the different configurations of the scheduled cells. Many DCI fields may appear only once, for example, HARQ-ACK related fields (such as DAI, K1, and PUCCH resources) for PDSCH scheduling may be signaled only once.

[0221] In another embodiment, a predefined relationship may be established between the DCI fields of the scheduled cells. For example, one of the scheduled cells may be considered as the primary scheduled cell, and the DCI fields of the other scheduled cells may be interpreted based on the DCI field of the primary scheduled cell.

[0222] In another embodiment, the primary scheduled cell is a scheduled cell having the largest DCI format size.

[0223] In another embodiment, the DCI fields of other scheduled cells may be interpreted according to the BWP switching rule. For example, the UE may

[0224] -For each information field in the DCI format

[0225] - If the size of the information field is smaller than the size required for the DCI format interpretation of the UL BWP or DL ​​BWP indicated by the bandwidth part indicator, the UE adds zeros in front of the information field before interpreting the DCI format information field until its size is the size required for interpreting the information field of the UL BWP or DL ​​BWP, respectively

[0226] - If the size of the information field is larger than the size required for the DCI format interpretation of the ULBWP or DL ​​BWP indicated by the bandwidth part indicator, the UE uses the number of DCI format least significant bits equal to the size required for the ULBWP or DL ​​BWP indicated by the bandwidth part indicator, respectively, before interpreting the DCI format information field

[0227] - Set the active UL BWP or DL ​​BWP to the UL BWP or DL ​​BWP indicated by the bandwidth part indicator in the DCI format

[0228] If the Bandwidth Part Indicator field is configured in the DCI format for PUSCH and indicates a different SCS configuration μ or a different number of RB sets compared to the currently active UL BWP If the UE has an active UL BWP, the UE may determine the uplink frequency domain resource allocation type 2 based on the X' bits and Y' bits generated by independently truncating or padding the X MSBs and Y LSBs of the frequency domain resource assignment field of DCI format 0_1 ​​[6, TS38.214, Release 17], where truncation starts from the MSB of the X bits or Y bits, zero padding adds zeros in front of the X bits or Y bits, and

[0229] - if the indicated active UL BWP has SCS configuration μ=1 and the current active BWP has SCS configuration μ=0, then the X MSBs may be truncated to X'=X-1 bits, or

[0230] - If the indicated active UL BWP has SCS configuration μ=0 and the current active BWP has SCS configuration μ=1, then the X MSBs may be zero-filled to X'=X+1 bits

[0231] - Otherwise, the X MSBs can remain unchanged

[0232] -and

[0233] -Y LSBs may be truncated or zero-filled as Units, including is the number of RB sets configured for the indicated active UL BWP configuration.

[0234] The UE may not expect to detect a DCI format with a BWP indicator field indicating an active DL BWP change or an active UL BWP change, where the corresponding time domain resource assignment field provides a slot offset value for PDSCH reception or PUSCH transmission, respectively, that is less than the delay required by the UE for the active DL BWP change or UL BWP change.

[0235] A single transport block (TB) per cell

[0236] Fig.10 The present invention presents a method of scheduling a PUSCH or PDSCH of each cell using a scheduling cell (1030) on each of multiple cells (1040, 1050) using a single DCI (1000), wherein the multiple PUSCHs or PDSCHs may carry different transport blocks (TBs) (1010 and 1020) according to an embodiment.

[0237] The DCI payload can be reduced by exploiting redundancy and semi-static configuration of various transmission / reception parameters:

[0238] The DCI fields can be divided into three types:

[0239] o Type 1 field: Common to each of the co-scheduled cells where PUSCH / PDSCH is scheduled

[0240] o Type 2 field: independent for each of the co-scheduled cells where PUSCH / PDSCH is scheduled

[0241] o Type 3 field: flexible among the co-scheduled cells where PUSCH / PDSCH is scheduled, either common or independent, depending on the network configuration.

[0242] By exploiting the redundancy provided by the type 1 DCI field, the DCI payload size can be significantly reduced. (Multiple) type 3 DCI fields can be semi-statically (re)configured as type 1 or type 2 DCI fields. The base station can semi-statically (re)configure the type 3 field and share the information of (multiple) such fields to the UE via RRC signaling. The network operator can also pre-configure the type 3 DCI field as a type 1 or type 2 DCI field as required by the network. Examples of type 3 fields include the following: In the case of collocated deployment, the co-scheduled cells can share beam-related DCI fields, such as transmission configuration indication (TCI), SRS resource indicator (SRS resource indicator, SRI), antenna port indication, etc., and these DCI fields can be configured as type 1, while for non-collocated deployment, beam-related DCI fields can be configured as type 2.

[0243] Example Type 1 and Type 2 DCI fields of a DCI format for scheduling PDSCH on multiple cells:

[0244] Type 1 DCI fields: CSCI field, identifier for DCI format, downlink assignment index, TPC for scheduled PUCCH, PUCCH resource indicator, PDSCH to HARQ timing indicator.

[0245] Type 2 DCI fields: new data indicator, redundancy version, modulation and coding scheme, frequency domain resource allocation, time domain resource allocation, bandwidth part indicator, HARQ process number.

[0246] Type 3 DCI fields: (multiple) antenna ports, transmission configuration indication (TCI), SRS request, DMRS sequence initialization.

[0247] One or more of the following additional DCI fields may be configured as type 1 or type 2 DCI fields in the DCI format for scheduling PDSCH on multiple cells: PRB bundling size indicator, rate matching indicator, ZP CSI-RS trigger, VRB to PRB mapping, one-time HARQ-ACK request, ChannelAccess-Cpext, etc.

[0248] Example Type 1 and Type 2 DCI fields of a DCI format for scheduling PUSCH on multiple cells:

[0249] Type 1 DCI fields: CSCI field, identifier for DCI format, downlink assignment index.

[0250] Type 2 DCI fields: new data indicator, redundancy version, modulation and coding scheme, frequency domain resource allocation, time domain resource allocation, bandwidth part indicator, HARQ process number.

[0251] Type 3 DCI fields: (multiple) antenna ports, SRS request, SRS resource indicator (SRI), DMRS sequence initialization.

[0252] One or more of the following additional DCI fields may be configured as type 1 or type 2 DCI fields in a DCI format for scheduling PDSCH on multiple cells: TPC command for scheduled PUSCH, ChannelAccess-Cpext, CSI request, beta offset indicator, etc.

[0253] In an embodiment, one or more of the (multiple) DCI fields in Table 6 and Table 7 may be semi-statically (re)configured as a type 1 field through RRC signaling. For example, for a co-scheduled cell, frequency-domain resource assignment (FDRA) and / or time-domain resource assignment (TDRA) may be semi-statically (re)configured as a type 1 DCI field. Therefore, a single field in the DCI may indicate the FDRA or TDRA of all co-scheduled cells.

[0254] For simplicity, it may be beneficial to have a common start time for scheduled PUSCH or PDSCH across cells, since the DCI field may indicate the time domain resources used for the co-scheduled cells. The configuration of the common start time for scheduled PUSCH or PDSCH may be indicated to the UE via RRC signaling or physical layer signaling. Alternatively, a predefined time offset may be configured for the PUSCH / PDSCH transmission / reception start time across cells, with which the UE may also transmit / receive PUSCH or PDSCH across cells using the DCI field. The predefined time offset value may be provided to the UE via RRC signaling or physical layer signaling.

[0255] The DCI fields in Table 6 are a list of fields in the DCI format that can be used to schedule PDSCH.

[0256] Table 6: DCI field types for PDSCH

[0257]

[0258]

[0259] The DCI fields in Table 7 are a list of DCI fields that can be used to schedule PUSCH.

[0260] Table 7: DCI field types for PUSCH

[0261]

[0262]

[0263]

[0264] *The "Sidelink Assignment Index" field may not be applicable for DCI formats used to schedule multiple cells.

[0265] **In a cell group, at most one SUL is configured, so a DCI format for scheduling multiple cells may not be required.

[0266] "UL / SUL Indicator" field in DCI. If necessary, the "UL / SUL Indicator" can be dynamically determined by RRC configuration.

[0267] In an embodiment, the version 16 NR-U / URLLC / power saving related DCI fields may not be included in the DCI format for scheduling multiple cells. Examples of such DCI fields for PDSCH scheduling are one-time HARQ-ACK request, PDSCH group index, new feedback indicator, number of (multiple) requested PDSCH groups, ChannelAccess-Cpext, priority indicator, minimum applicable scheduling offset indicator, and SCell sleep indication. Similarly, examples of such DCI fields for PUSCH scheduling are ChannelAccess-Cpext, ChannelAccess-CPext-CAPC, priority indicator, invalid symbol mode indicator, minimum applicable scheduling offset indicator, SCell sleep indication, open-loop power control parameter set indication, and DFI flag.

[0268] In another embodiment, a cell bit size field in the DCI indicating the bits allocated to each cell may be included in a DCI format for scheduling the PUSCH or PDSCH of each cell on each of the multiple cells. For example, a single DCI in 5G supports 140 bits (excluding CRC), which may include a type 1 field and a type 2 field. Since the bits used for the type 1 field may be fixed and common to all scheduled cells, only the type 2 field may change between scheduled cells. The cell bit size field may indicate which cells are scheduled using the number of bits predefined in the type 2 field. The predefined number of bits in the type 2 field may be configured as the cumulative number of bits in the type 2 field for each scheduled cell. In an alternative embodiment, the cell bit size field may indicate a predefined bit combination for each cell, as shown in Table 8. During the configuration of scheduling the PUSCH or PDSCH of each cell on each of the multiple cells, information on the predefined combination may be provided to the UE via RRC signaling. Table 8 provides an example with 2 bits, but it may not be limited to only 2 bits, it may be extended according to the demand and the number of co-scheduled cells.

[0269] Table 8

[0270] Cell Bit Size Field Community 1 Community 2 Cell 3 00 X1 digit X2 digits X2 digits 01 X1 digit X2 digits X1 digit 10 X2 digits X1 digit X2 digits 11 X1 digit X1 digit X1 digit

[0271] In another embodiment, the method of scheduling multiple cells using a single DCI may include the following steps:

[0272] ● Receive downlink control information (DCI) for scheduling multiple cells

[0273] ● wherein the DCI includes at least one common field applicable to multiple cells;

[0274] ● wherein the DCI comprises at least one independent field applicable to a first cell among the plurality of cells;

[0275] • And wherein the DCI comprises at least one independent field applicable to a second cell of the plurality of cells.

[0276] Combination Fig.12 More specific embodiments of this broader concept are described. However, it will be appreciated by those skilled in the art that the number of cells and fields represented is for exemplary purposes only and that other numbers of cells / fields may be used.

[0277] In another embodiment, Fig.12A DCI format X_Y (which may be referred to as DCI format X_Y, where X=0 is used for PUSCH scheduling, X=1 is used for PDSCH scheduling, and Y indicates a format number that may have values ​​such as 3, 0a, 1a, 2a, etc.) (1200) is disclosed in the disclosure. As shown therein, type 1 DCI fields may be grouped together (1210), and type 2 DCI fields may be grouped by cell starting from cell 1 (1220), cell 2 (1230), and so on. Type 2 DCI fields (1220 and 1230) may be grouped according to cell index (starting from the minimum or maximum cell index) or according to the type 2 DCI field payload size of the cell. Those skilled in the art will appreciate that a type 1 or type 2 DCI field for PUSCH or PDSCH scheduling may include a DCI field classified as type 1 or type 2 in other embodiments of the present disclosure. Further, a type 1 DCI field may include a CSCI field that may be configured in accordance with the concepts described in conjunction with the descriptions of Tables 1 to 5. The type 2 DCI field may be ordered in the same cell index order as indicated by the CSCI field in the DCI. The cell index order indicated by the CSCI field is described in conjunction with the descriptions of Tables 1 to 5.

[0278] like Fig.12 As shown, the advantage of using the DCI format is that the processing of cell 1 is completed before cell 2, and the UE can start preparing for transmission / reception for cell 1 earlier than for cell 2, thereby reducing the waiting time for cell 1.

[0279] In another embodiment, the method of scheduling multiple cells using a single DCI may include the following steps:

[0280] ● receiving downlink control information (DCI) for scheduling multiple cells;

[0281] ● wherein the DCI includes at least one common field applicable to multiple cells;

[0282] ● wherein the DCI comprises a first independent field applicable to a first cell among the plurality of cells and a second independent field applicable to the first cell among the plurality of cells;

[0283] ● wherein the DCI comprises a first independent field applicable to a second cell among the plurality of cells and a second independent field applicable to the second cell among the plurality of cells;

[0284] ●Wherein, in the DCI, a first independent field applicable to a first cell among multiple cells and a first independent field applicable to a second cell among multiple cells precede a second independent field applicable to the first cell among multiple cells and a second independent field applicable to the second cell among multiple cells.

[0285] Combination Fig.13 More specific embodiments of this broader concept are described. However, it will be appreciated by those skilled in the art that the number of cells and fields represented is for exemplary purposes only and that other numbers of cells / fields may be used.

[0286] In another embodiment, Fig.13 A DCI format X_Y (which may be referred to as DCI format X_Y, where X=0 is used for PUSCH scheduling, X=1 is used for PDSCH scheduling, and Y indicates a format number that may have values ​​such as 3, 0a, 1a, 2a, etc.) is disclosed in (1300). As shown therein, type 1 DCI fields (1310) may be grouped together, and type 2 DCI fields may be cell interleaved (1320), where field 1 may be grouped for all co-scheduled cells, followed by field 2 for all co-scheduled cells, and so on. The interleaved type 2 DCI fields may have a predefined order, for example, field 1 of cell index 1 may be followed by field 1 of cell index 2, and so on. The predefined order may be based on the cell index, or the order may be preconfigured through RRC signaling while configuring the co-scheduled cell group. Sorting based on the cell index may be performed so that a combination of cells with the smallest (or largest) cell index may appear first compared to other cell indices. For example, for co-scheduled cell indices 1, 3, and 4, type 2 field 1 of cell index 1 is followed by type 2 field 1 of cell index 3, and type 2 field 1 of cell index 3 is followed by type 2 field 1 of cell index 4. It will be appreciated by those skilled in the art that a type 1 or type 2 DCI field for PUSCH or PDSCH scheduling may include a DCI field classified as type 1 or type 2 in other embodiments of the present disclosure. Further, a type 1 DCI field may include a CSCI field that may be configured in accordance with the concepts described in conjunction with the descriptions of Tables 1 to 5. Type 2 DCI fields may be sorted in the same cell index order as indicated by the CSCI field in the DCI, and the cell index order indicated by the CSCI field is described in conjunction with the descriptions of Tables 1 to 5.

[0287] In another embodiment, the method of scheduling multiple cells using a single DCI may include the following steps:

[0288] ● receiving downlink control information (DCI) for scheduling multiple cells;

[0289] ● wherein the DCI comprises at least one common field applicable to a first cell among the plurality of cells and a second cell among the plurality of cells;

[0290] • Wherein the DCI comprises at least one common field applicable to a third cell among the plurality of cells and a fourth cell among the plurality of cells.

[0291] Combination Fig.14 More specific embodiments of this broader concept are described. However, it will be appreciated by those skilled in the art that the number of cells and fields represented is for exemplary purposes only and that other numbers of cells / fields may be used.

[0292] In another embodiment, the Type 2 DCI field (1400) may also have commonality between cell subsets, such as Fig.14 For example, in addition to the type 1 field (e.g., Fig.12 and Fig.13 1210 or 1310 as shown), some of the type 2 DCI fields may have commonality between subsets of 2 or 3 cells. The common type 2 field combination of cells 1 and 2 can be referred to as type 2_1 (1410), similarly, cells 1 and 4 can be referred to as type 2_2 (1420), cells 3 and 4 can be referred to as type 2_3 (1430), and so on. These additional commonalities between subsets of cells may be due to the co-location of cells, due to intra-band CA, due to similar interference characteristics, etc. Therefore, it may be beneficial to utilize additional redundancy in the type 2 DCI field. It will be appreciated by those skilled in the art that the type 2 DCI field for PUSCH or PDSCH scheduling may be included in other embodiments of the present disclosure. DCI fields classified as type 2.

[0293] In another embodiment, the method of scheduling multiple cells using a single DCI may include the following steps:

[0294] ● Receive downlink control information (DCI), which includes:

[0295] o a first co-scheduled cell indicator (CSCI) indicating a first plurality of cells;

[0296] wherein the first CSCI is associated with the first common field;

[0297] o indicating a second CSCI from a second plurality of cells among the first plurality of cells;

[0298] Wherein the second CSCI is associated with the second common field.

[0299] Combination Figure 8 More specific embodiments of this broader concept are described. However, it will be appreciated by those skilled in the art that the number of cells and fields represented is for exemplary purposes only and that other numbers of cells / fields may be used.

[0300] like Fig.15 As shown, DCI format X_Y (1500) may have multiple co-scheduled cell indication fields (CSCI) to indicate various combinations of co-scheduled cells for DCI fields according to an embodiment. For example, CSCI-1 may be used to indicate a co-scheduled cell group, and it is part of a type 1 DCI field (1510), while CSCI-2 may be used to indicate a subset of co-scheduled cells for a type 2_1 DCI field (1520) within a co-scheduled cell group, and similarly, CSCI-3 may be used to indicate a subset of co-scheduled cells for a type 2_2 DCI field (1530) within a co-scheduled cell group, and so on. A type 2 DCI field (1540) that is not common between co-scheduled cells may also be used as shown in FIG. Fig.12 and Fig.13 The predefined order may be used to sort DCI fields such as type 2_1 (1520), type 2_2 (1530), type 2_3 (1540), etc. The order may be based on the cell index, or the order may be preconfigured through RRC signaling while configuring the co-scheduled cell group. The sorting based on the cell index may be performed so that a combination of cells with the smallest (or largest) cell index may appear first compared to other cell indexes. Fig.14 Taking the DCI format X_Y (1400) shown as an example, compared with the type 2_2 DCI field (1420) indicating the commonality of cell indexes 1 and 4, the type 2_1 DCI field (1410) indicating the commonality of cell indexes 1 and 2 may appear first, and similarly, the type 2_3 DCI field (1430) indicating the commonality of cell indexes 3 and 4 may appear after the type 2_2 DCI field (1420) indicating the commonality of cell indexes 1 and 4. It will be appreciated by those skilled in the art that the type 1 or type 2 DCI field for PUSCH or PDSCH scheduling may include a DCI field classified as type 1 or type 2 in other embodiments of the present disclosure. Further, the type 1 DCI field may include a CSCI field that may be configured according to the concepts described in conjunction with the descriptions of Tables 1 to 5.

[0301] In another embodiment, a BS (e.g., in combination with Figure 5 The BS described in the description of Figure 4The UE may receive signaling (e.g., the signaling described in 710) from a UE that receives a co-scheduled cell, and the UE may be configured to have a primary cell group with co-scheduled cells based on the received signaling (e.g., the signaling described in 610), and the UE may also be configured to have one or more secondary cell groups each containing a subset of cells in the primary cell group. The primary cell group may have one or more DCI fields common to all co-scheduled cells, and the secondary cell group may have one or more DCI fields common to the subset of cells in the secondary cell group (different from the common DCI fields of the primary cell group). The UE configuration of the primary cell group and the secondary cell group may be performed semi-statically via RRC configuration information. The RRC configuration information may include at least one of a cell index of a scheduled cell, a cell index of a scheduling cell, a primary cell group ID, or a secondary cell group ID.

[0302] In another embodiment, Fig.16 A DCI format X_Y (which may be referred to as DCI format X_Y, where X=0 is used for PUSCH scheduling, X=1 is used for PDSCH scheduling, and Y indicates a format number that may have values ​​such as 3, 0a, 1a, 2a, etc.) (1600) is disclosed in the specification. As shown therein, type 1 DCI fields may be grouped together (1610), and type 2 DCI fields may be grouped according to cell indexes. For example, a type 2 DCI field (1620) of cell index 1 is followed by a type 2 DCI field (1630) of cell index 3, a type 2 DCI field (1630) of cell index 3 is followed by a type 2 DCI field (1640) of cell index 4, and so on. The grouping of type 2 DCI fields (1620, 1630, and 1640) may start from the minimum or maximum cell index. The cell indices of the co-scheduled cells may be continuous or non-continuous. It will be appreciated by those skilled in the art that a type 1 or type 2 DCI field for PUSCH or PDSCH scheduling may include a DCI field classified as type 1 or type 2 in other embodiments of the present disclosure. Further, a type 1 DCI field may include a CSCI field that may be configured according to the concepts described in conjunction with the descriptions of Tables 1 to 5. The type 2 DCI field may be sorted in the same cell index order as indicated by the CSCI field in the DCI, and the cell index order indicated by the CSCI field is described in conjunction with the descriptions of Tables 1 to 5.

[0303] In another embodiment, Fig.17A DCI format X_Y (which may be referred to as DCI format X_Y, where X=0 is used for PUSCH scheduling, X=1 is used for PDSCH scheduling, and Y indicates a format number that may have values ​​such as 3, 0a, 1a, 2a, etc.) is disclosed in (1700). As shown therein, type 1 DCI fields (1710) may be grouped together, and type 2 DCI fields may be cell interleaved (1720), where field 1 may be grouped for all co-scheduled cells, followed by field 2 for all co-scheduled cells, and so on. The interleaved type 2 DCI fields may have a predefined order, for example, in ascending order of cell index, field 1 of cell index 1 is followed by field 1 of cell index 3, field 1 of cell index 3 is followed by field 1 of cell index 4, and so on. Sorting based on cell index may be performed so that a combination of cells with the smallest cell index may appear first compared to other cell indexes. The cell indexes of the co-scheduled cells may be continuous or non-contiguous. For example, Fig.17 As shown, for co-scheduled cell indexes 1, 3, and 4, the type 2 field 1 of cell index 1 is followed by the type 2 field 1 of cell index 3, and the type 2 field 1 of cell index 3 is followed by the type 2 field 1 of cell index 4. It will be appreciated by those skilled in the art that a type 1 or type 2 DCI field for PUSCH or PDSCH scheduling may include a DCI field classified as type 1 or type 2 in other embodiments of the present disclosure. Further, the type 1 DCI field may include a CSCI field that may be configured in accordance with the concepts described in conjunction with the descriptions of Tables 1 to 5. The type 2 DCI fields may be sorted in the same cell index order as indicated by the CSCI field in the DCI, and the cell index order indicated by the CSCI field is described in conjunction with the descriptions of Tables 1 to 5.

[0304] In another embodiment, Fig.18A DCI format X_Y (which may be referred to as DCI format X_Y, where X=0 is used for PUSCH scheduling, X=1 is used for PDSCH scheduling, and Y indicates a format number that may have values ​​such as 3, 0a, 1a, 2a, etc.) (1800) is disclosed in the specification. As shown therein, type 1 DCI fields may be grouped together (1810), and type 2 DCI fields may be grouped according to cell indexes. For example, a type 2 DCI field (1820) of cell index 2 is followed by a type 2 DCI field (1830) of cell index 3, and so on. The grouping of type 2 DCI fields (1820 and 1830) may start from the minimum cell index. The starting cell index is the minimum cell index among the co-scheduled cells. The cell indexes of the co-scheduled cells may be continuous or non-continuous. It will be appreciated by those skilled in the art that type 1 or type 2 DCI fields for PUSCH or PDSCH scheduling may be included in DCI fields classified as type 1 or type 2 in other embodiments of the present disclosure. Further, the type 1 DCI field may include a CSCI field that may be configured according to the concepts described in conjunction with the descriptions of Tables 1 to 5. The type 2 DCI field may be sorted in the same cell index order as indicated by the CSCI field in the DCI, and the cell index order indicated by the CSCI field is described in conjunction with the descriptions of Tables 1 to 5.

[0305] In another embodiment, Fig.19 A DCI format X_Y (which may be referred to as DCI format X_Y, where X=0 is used for PUSCH scheduling, X=1 is used for PDSCH scheduling, and Y indicates a format number that may have values ​​such as 3, 0a, 1a, 2a, etc.) is disclosed in (1900). As shown therein, type 1 DCI fields (1910) may be grouped together, and type 2 DCI fields may be cell interleaved (1920), where field 1 may be grouped for all co-scheduled cells, followed by field 2 for all co-scheduled cells, and so on. The interleaved type 2 DCI fields may have a predefined order, for example, in ascending order of cell index, field 2 of cell index 1 is followed by field 1 of cell index 3, and so on. Sorting based on cell index may be performed so that a combination of cells with the smallest cell index may appear first compared to other cell indexes. The starting cell index is the smallest cell index among the co-scheduled cells. The cell indexes of the co-scheduled cells may be continuous or non-continuous. For example, Fig.19As shown, for co-scheduled cell indexes 2 and 3, the type 2 field 1 of cell index 2 is followed by the type 2 field 1 of cell index 3. It will be appreciated by those skilled in the art that the type 1 or type 2 DCI field for PUSCH or PDSCH scheduling may include a DCI field classified as type 1 or type 2 in other embodiments of the present disclosure. Further, the type 1 DCI field may include a CSCI field that may be configured in accordance with the concepts described in conjunction with the descriptions of Tables 1 to 5. The type 2 DCI fields may be sorted in the same cell index order as indicated by the CSCI field in the DCI, and the cell index order indicated by the CSCI field is described in conjunction with the descriptions of Tables 1 to 5.

[0306] An example method performed by a user equipment according to an embodiment is Fig. 20 . According to this embodiment, the method includes step 2000, wherein the UE receives downlink control information (DCI), the downlink control information including scheduling information associated with a corresponding PUSCH or a corresponding PDSCH for a cell subset of a plurality of cells, each of the plurality of cells being associated with a corresponding cell index. According to this embodiment, the DCI includes a common field, the common field including information indicating a first cell index associated with a first cell in the cell subset and a second cell index associated with a second cell in the cell subset, wherein (i) the smallest of the first cell index or the second cell index is greater than the smallest cell index in the plurality of cells, or (ii) the first cell index and the second cell index are not consecutive cell indexes. Further, according to this embodiment, the DCI includes: a first independent field, the first independent field including first information in the first type of information; and a second independent field, the second independent field including second information in the first type of information, wherein the second independent field follows the first independent field in the DCI, wherein the first information applies to a cell with a smallest cell index in the cell subset, and wherein the second information applies to a scheduled cell with a second small cell index in the cell subset. The method continues to step 2010, where the UE transmits a corresponding PUSCH or receives a corresponding PDSCH on the cell subset based on the received DCI, as appropriate.

[0307] In an embodiment, the received DCI further includes: a third independent field, the third independent field including the third information in the second type of information; and a fourth independent field, the fourth independent field including the fourth information in the second type of information. The third independent field follows the second independent field in the DCI. The fourth independent field follows the third independent field in the DCI. The third information is applicable to the cell with the smallest cell index in the cell subset, and the fourth information is applicable to the cell with the second small cell index in the cell subset.

[0308] In an embodiment, the received DCI further includes: a third independent field, the third independent field including the third information in the second type of information; and a fourth independent field, the fourth independent field including the fourth information in the second type of information. The third independent field follows the first independent field in the DCI. The second independent field follows the third independent field in the DCI. The fourth independent field follows the second independent field in the DCI. The third information is applicable to the cell with the smallest cell index in the cell subset, and the fourth information is applicable to the cell with the second small cell index in the cell subset.

[0309] In an embodiment, the first common field in the received DCI also includes information indicating a third cell index associated with a third cell in the cell subset, wherein the second cell index and the third cell index are consecutive, and the DCI also includes a third independent field, the third independent field including the third information in the first type of information. The third independent field follows the second independent field in the DCI, and the third information is applicable to a scheduled cell with a third small cell index in the cell subset.

[0310] In an embodiment, the received DCI also includes a second common field, which includes information applicable to a subset of cells of the multiple cells. The information applicable to the subset of the multiple cells includes one of DCI format information, downlink dispatch index information, TPC for scheduled PUCCH information, PUCCH resource indicator information, or PDSCH to HARQ timing indicator information. When the information applicable to the subset of the multiple cells includes DCI format information indicating uplink scheduling, the DCI also includes: a third common field, which carries the TPC for the scheduled PUCCH information; and a fourth common field, which carries the PUCCH resource indicator information.

[0311] In an embodiment, the first type of information in the received DCI includes one of new data indicator information, redundancy version information, modulation and coding scheme information, frequency domain resource allocation information, time domain resource allocation information, or HARQ process number information.

[0312] In an embodiment, the DCI is received on a cell other than one of the cells in the subset of cells.

[0313] In an embodiment, the DCI is received on the cell with the smallest cell index in the subset of cells.

[0314] In an embodiment, the wireless communication method performed by the UE also includes receiving RRC signaling. The cell subset is represented by two or more bits in the RRC signaling, and the RRC signaling indicates the relationship between the values ​​of the two or more bits and the cell subset. The RRC signaling includes a cell group ID indicating multiple cells, and also includes corresponding cell indexes of the multiple cells. DCI is received on a cell in the multiple cells, and the RRC signaling also includes a cell index of a cell in the multiple cells on which the DCI is received. The cell group indicated by the cell group ID is a PUCCH cell group. The RRC signaling is included in the ServingCellConfig message.

[0315] An example method performed by a user equipment according to an embodiment is Fig.21 According to this embodiment, the method includes step 2010, wherein the BS transmits downlink control information (DCI), the downlink control information including scheduling information associated with a corresponding PUSCH or a corresponding PDSCH for a cell subset of a plurality of cells, each of the plurality of cells being associated with a corresponding cell index. According to this embodiment, the DCI includes a common field, the common field including information indicating a first cell index associated with a first cell in the cell subset and a second cell index associated with a second cell in the cell subset, wherein (i) the smallest of the first cell index or the second cell index is greater than the smallest cell index among the plurality of cells, or (ii) the first cell index and the second cell index are not consecutive cell indexes. Further, according to this embodiment, the DCI includes: a first independent field, the first independent field including first information in the first type of information; and a second independent field, the second independent field including second information in the first type of information, wherein the second independent field follows the first independent field in the DCI, wherein the first information applies to a cell with a smallest cell index in the cell subset, and wherein the second information applies to a scheduled cell with a second small cell index in the cell subset. The method continues to step 2110, where the BS receives a corresponding PUSCH or transmits a corresponding PDSCH on the cell subset based on the transmitted DCI, as appropriate.

[0316] In an embodiment, the transmitted DCI further includes: a third independent field, the third independent field including the third information in the second type of information; and a fourth independent field, the fourth independent field including the fourth information in the second type of information. The third independent field follows the second independent field in the DCI. The fourth independent field follows the third independent field in the DCI. The third information is applicable to the cell with the smallest cell index in the cell subset, and the fourth information is applicable to the cell with the second small cell index in the cell subset.

[0317] In an embodiment, the transmitted DCI also includes: a third independent field, the third independent field including the third information in the second type of information; and a fourth independent field, the fourth independent field including the fourth information in the second type of information. The third independent field follows the first independent field in the DCI. The second independent field follows the third independent field in the DCI. The fourth independent field follows the second independent field in the DCI. The third information is applicable to the cell with the smallest cell index in the cell subset, and the fourth information is applicable to the cell with the second small cell index in the cell subset.

[0318] In an embodiment, the first common field in the transmitted DCI also includes information indicating a third cell index associated with a third cell in the cell subset, wherein the second cell index and the third cell index are consecutive, and the DCI also includes a third independent field, the third independent field including the third information in the first type of information. The third independent field follows the second independent field in the DCI, and the third information is applicable to a scheduled cell with a third small cell index in the cell subset.

[0319] In an embodiment, the transmitted DCI also includes a second common field, which includes information applicable to a subset of cells of the multiple cells. The information applicable to the subset of the multiple cells includes one of DCI format information, downlink dispatch index information, TPC for scheduled PUCCH information, PUCCH resource indicator information, or PDSCH to HARQ timing indicator information. When the information applicable to the subset of the multiple cells includes DCI format information indicating uplink scheduling, the DCI also includes: a third common field, which carries the TPC for the scheduled PUCCH information; and a fourth common field, which carries the PUCCH resource indicator information.

[0320] In an embodiment, the first type of information in the received DCI includes one of new data indicator information, redundancy version information, modulation and coding scheme information, frequency domain resource allocation information, time domain resource allocation information, or HARQ process number information.

[0321] In an embodiment, the DCI is transmitted on cells other than one cell in the subset of cells.

[0322] In an embodiment, the DCI is transmitted on the cell with the smallest cell index in the subset of cells.

[0323] In an embodiment, the wireless communication method performed by the BS also includes transmitting RRC signaling. The cell subset is represented by two or more bits in the RRC signaling, and the RRC signaling indicates the relationship between the values ​​of the two or more bits and the cell subset. The RRC signaling includes a cell group ID indicating multiple cells, and also includes corresponding cell indexes of the multiple cells. DCI is received on a cell in the multiple cells, and the RRC signaling also includes a cell index of a cell in the multiple cells on which the DCI is transmitted. The cell group indicated by the cell group ID is a PUCCH cell group. The RRC signaling is included in the ServingCellConfig message.

[0324] The same transport block (TB) on the co-scheduled cell

[0325] like Fig.11 As shown, according to an embodiment, a single DCI (1100) transmitted on a scheduling cell (1130) is used to schedule the PUSCH or PDSCH of each cell on each of multiple cells (1140, 1150), wherein the multiple PUSCHs or PDSCHs carry the same transport block (TB) (1110 and 1120).

[0326] A portion of the TB (1110 or 1120) may be transmitted to each cell. The code block groups (CBGs) of the TB may be divided between the scheduled cells for PUSCH / PDSCH transmission. The number of CBGs transmitted on each cell or the size of the CBGs may be separately indicated to the UE via RRC signaling or physical layer signaling.

[0327] In an embodiment, the size of the CBG transmitted on each cell may be configured to be equal, in which case separate signaling may not be required for configuring the UE.

[0328] When the same transport block is transmitted / received on the co-scheduled cells, many data fields of the DCI format are common Type 1 DCI fields because they refer to the same PUSCH or PDSCH data.

[0329] Those skilled in the art will appreciate that the DCI field used for PUSCH or PDSCH scheduling using the same transport block (TB) on the co-scheduled cell may include a CSCI field that may be configured according to the concepts described in conjunction with Tables 1 to 5. Figures 6 to 8 The described DCI format may be used to schedule the same transport block (TB) on the co-scheduled cells.

[0330] PDSCH Scheduling DCI Field

[0331] According to an embodiment, in the DCI format for scheduling the PDSCH of multiple cells, one or more of the HARQ-related DCI fields (such as HARQ process number, DAI, PDSCH to HARQ feedback timing indicator, CBG transmission information (CBGTI), CBG clearing information (CBGFI), one-time HARQ-ACK request, PDSCH group index, new feedback indicator, (multiple) requested number of PDSCH groups, etc.) can be configured as type 1 DCI fields among the cells. The DCI format indicator field and the CSCI field can also be configured as type 1 DCI fields among the scheduled cells.

[0332] In another embodiment, in the DCI format of PDSCH for scheduling multiple cells, one or more of the DCI fields related to resource information (such as TDRA, FDRA, bandwidth part indicator, VRB to PRB mapping, PRB bundling size indicator, ZP CSI-RS trigger, minimum applicable scheduling offset indicator, SCell sleep indication, ChannelAccess-Cpext) can be configured as type 1 DCI fields among the co-scheduled cells.

[0333] In another embodiment, in the DCI format of the PDSCH for scheduling multiple cells, one or more of the DCI fields related to the transport block (such as modulation and coding scheme, new data indicator, redundancy version, and priority indicator) can be configured as type 2 DCI fields among the co-scheduled cells.

[0334] In another embodiment, in the DCI format of the PDSCH for scheduling multiple cells, one or more of the DCI fields related to multi-antenna and power control can be configured as type 2 DCI fields in the scheduled cells. For example, multi-antenna related fields (such as DMRS sequence initialization, antenna port, transmission configuration indication) can be configured as type 2 DCI fields in the scheduled cells, while SRS requests can be configured as type 1 DCI fields. Similarly, the TPC command and PUCCH resource indicator fields for the scheduled PUCCH can be configured as type 1 DCI fields in the co-scheduled cells.

[0335] PUSCH Scheduling DCI Field

[0336] Similarly, according to an embodiment, in the DCI format of the PUSCH for scheduling multiple cells, one or more of the HARQ-related DCI fields (such as the HARQ process number, DAI (first DAI and second DAI), CBG transmission information (CBGTI), etc.) can be configured as a type 1 DCI field in the cell. The DCI format indicator field, the CSCI field, and the DFI flag field can also be configured as a type 1 DCI field in the co-scheduled cell.

[0337] In another embodiment, in the DCI format of PUSCH for scheduling multiple cells, one or more of the DCI fields related to resource information (such as TDRA, FDRA, bandwidth part indicator, frequency hopping, ChannelAccess-Cpext, ChannelAccess-CPext-CAPC, invalid symbol pattern indicator, minimum applicable scheduling offset indicator and SCell sleep indication) can be configured as type 1 DCI fields in the co-scheduling cells.

[0338] In another embodiment, in the DCI format of PUSCH for scheduling multiple cells, one or more of the DCI fields related to the transport block (such as modulation and coding scheme, new data indicator, redundancy version, UL-SCH indicator, and priority indicator) can be configured as type 1 DCI fields among the co-scheduled cells.

[0339] In another embodiment, in the DCI format of the PUSCH for scheduling multiple cells, one or more of the DCI fields related to multiple antennas and power control can be configured as type 2 DCI fields in the scheduled cells. For example, multiple antenna related fields (such as DMRS sequence initialization, antenna port, precoding information and number of layers, second precoding information, PTRS-DMRS association, second PTRS-DMRS association) can be configured as type 2 DCI fields in the scheduled cells, while SRS requests and CSI requests can be configured as type 1 DCI fields. Similarly, the TPC command for the scheduled PUSCH, the second TPC command for the scheduled PUSCH, the open-loop power control parameter set indication, and the beta_offset indicator field can be configured as type 2 DCI fields in the co-scheduled cells.

[0340] Two-level DCI

[0341] According to an embodiment, once a UE is configured for PUSCH / PDSCH scheduling on multiple cells using a single DCI, a two-level DCI can be configured, whereby in a first-level DCI, a portion of the DCI field can be received by the UE, and then a second DCI can be received to obtain the remaining DCI field. This technique can help keep a check on the DCI size, as an excessively large DCI size reduces the PDCCH reception probability. Moreover, having a two-level DCI may be beneficial because the PDCCH size is limited to 140 bits (excluding CRC) in 5G NR, and when multiple cells are scheduled using a single DCI, the PDCCH size may exceed 140 bits.

[0342] According to an embodiment, a method of scheduling multiple cells using a single DCI may include the following steps:

[0343] ● receiving first downlink control information (DCI) for scheduling a plurality of cells;

[0344] ● wherein the first DCI includes one or more common fields applicable to multiple cells;

[0345] ● after receiving the first DCI, receiving a second downlink control information (DCI) for scheduling a plurality of cells;

[0346] • Wherein the second DCI comprises at least one independent field applicable to each of the plurality of cells.

[0347] In an embodiment, the first level DCI may contain a type 1 DCI field, and the second level DCI may contain a type 2 DCI field.

[0348] In another embodiment, the UE may be configured to receive a first level DCI including a portion of the type 1 DCI field and the type 2 DCI field up to a total of 140 bits (excluding CRC), and a second level DCI including the remaining type 2 DCI field.

[0349] In another embodiment, if the first-level DCI only contains type 1 DCI fields, the CSCI field may not exist in the DCI, while for the second-level DCI, since all type 2 DCI fields are configured, the CSCI field may exist to indicate the scheduled cell.

[0350] In another embodiment, the first level DCI information may be stored by the UE for combination with one or more subsequently received second level DCIs.

[0351] In another embodiment, the UE may be configured to receive the first-level DCI on the PDCCH and the second-level DCI on the PDSCH. The second-level DCI may be multiplexed with the PDSCH scheduled by the first-level DCI.

[0352] In another embodiment, if the second-level DCI is configured to be received by the UE on the PDSCH, the PDSCH may be configured to be received on the same scheduling cell that receives the PDCCH containing the first-level DCI.

[0353] In another embodiment, if the second level DCI is configured to be received by the UE on the PDSCH, the PDSCH may be configured to be received on the cell indicated by the cell indicator field of the first level DCI.

[0354] In another embodiment, the UE may be configured to receive a first level DCI including a first indicator field on a scheduling cell, and after receiving the first level DCI, the UE may be configured to receive a second level DCI including a second indicator field. The first indicator field may indicate a cell on which the second level DCI including the second indicator field is received. The second indicator field may indicate multiple scheduled cells.

[0355] In another embodiment, the UE may be configured to receive a first level DCI including a first indicator field and a second indicator field on a scheduling cell, and after receiving the first level DCI, the UE may be configured to receive a second level DCI. The first indicator field may indicate a cell on which the second level DCI including the second indicator field is received. The second indicator field may indicate multiple scheduled cells.

[0356] In another embodiment, the UE may be configured to receive a first level DCI on a first cell, and after receiving the first level DCI, the UE may be configured to receive a second level DCI on a second cell. The second cell may be implicitly indicated by receiving the first level DCI, or may be preconfigured in the UE by RRC signaling received from the base station. In another embodiment, the first cell and the second cell may be configured to be the same or different.

[0357] In another embodiment, the UE may be configured to dynamically receive single-stage DCI and two-stage DCI according to the number of co-scheduled cells. For a larger number of co-scheduled cells, two-stage DCI may be used, while for a smaller number of co-scheduled cells, single-stage DCI may be used. The switch between single-stage DCI and two-stage DCI may be indicated to the UE via RRC signaling or physical layer signaling, or may be determined by the UE depending on the determination of the number of co-scheduled cells.

[0358] In another embodiment, the first-level DCI may be linked to the second-level DCI (if the UE is configured to receive the second-level DCI on the PDCCH) to reduce the amount of blind decoding work performed by the UE. Linking information may be provided to the UE via RRC configuration or the first-level DCI. In another embodiment, the linking information may indicate a predefined resource offset between a first PDCCH containing the first-level DCI and a second PDCCH containing the second-level DCI. The resource offset may indicate an offset of a time resource and / or a frequency resource. In another embodiment, the linking information may indicate the same frequency resources and different time resources for receiving the first PDCCH containing the first-level DCI and the second PDCCH containing the second-level DCI.

[0359] It will be appreciated by those skilled in the art that a type 1 or type 2 DCI field for PUSCH or PDSCH scheduling using two-level DCI may include a DCI field classified as type 1 or type 2 in other embodiments of the present disclosure. Further, a type 1 DCI field may include a CSCI field that may be configured according to the concepts described in conjunction with Tables 1 to 5. Scheduling PUSCH or PDSCH of each cell on each of multiple cells in the event of cell release or deactivation

[0360] In an embodiment, if multiple cells are semi-statically configured for various DCI fields, and one or more cells enter a dormant state or a deactivated state, or (multiple) cells are released, the semi-static configuration of the DCI fields can be updated accordingly, and based on the updated semi-static configuration of the DCI fields, the UE can continue to receive DCI that schedules multiple cells for the remaining cells in the cell group.

[0361] In an alternative embodiment, if multiple cells are semi-statically configured for various DCI fields and one or more cells enter a dormant state or a deactivated state, or (multiple) cells are released, the UE may release the semi-static configuration of the DCI fields and the UE may no longer receive DCI that schedules multiple cells for the remaining cells in the cell group.

[0362] In another embodiment, if multiple cells are semi-statically configured for various DCI fields, and one or more cells enter a dormant state or a deactivated state, or (multiple) cells are released, the semi-static configuration can be released and the UE can receive DCI containing independent type 2 DCI fields that schedule multiple cells for each of the (multiple) remaining cells corresponding to the previously configured semi-static DCI fields, while the type 1 DCI fields can continue to remain common to the cells.

[0363] Switch between single-cell PUSCH or PDSCH scheduling mode and multi-cell PUSCH or PDSCH scheduling mode

[0364] For simplicity, the UE may be configured in a single-cell PUSCH or PDSCH scheduling mode or a multi-cell PUSCH or PDSCH scheduling mode. Therefore, according to an embodiment, a signaling mechanism may be used whereby the UE is configured to dynamically switch between a single-cell PUSCH or PDSCH scheduling mode and a multi-cell PUSCH or PDSCH scheduling mode.

[0365] The switching configuration signaling may be provided by RRC signaling or physical layer signaling. While switching from a multi-cell PUSCH or PDSCH scheduling mode to a single-cell PUSCH or PDSCH scheduling mode, the UE may save the multi-cell PUSCH or PDSCH scheduling configuration information, and when the UE switches from a single-cell PUSCH or PDSCH scheduling mode back to a multi-cell PUSCH or PDSCH scheduling mode, the multi-cell PUSCH or PDSCH scheduling configuration information may be reused.

[0366] Further, the handover configuration signaling may include a duration or a predefined number of occasions that the switched mode is valid before switching back to the previous mode. For example, if the UE is in a single-cell PUSCH or PDSCH scheduling mode, the UE may receive handover configuration signaling indicating a duration or a predefined number of occasions that the UE may switch to a multi-cell PUSCH or PDSCH scheduling mode before switching back to the single-cell PUSCH or PDSCH scheduling mode. This may help to obtain the benefits of both modes.

[0367] In an embodiment, while in multi-cell PUSCH or PDSCH scheduling mode, if one or more cells enter a dormant state or a deactivated state, or (multiple) cells are released, the UE may switch to a single-cell PUSCH or PDSCH scheduling mode.

[0368] Retransmission Scheduling

[0369] According to an embodiment, the DCI for scheduling multiple cells can be used to schedule PUSCH or PDSCH, however, for retransmission, the UE can be configured by the base station to use a cell-specific single-cell DCI. In an alternative embodiment, the base station can configure the UE to use the DCI for scheduling multiple cells for both transmission and retransmission, and the type 2 field can indicate the cell-specific HARQ-ID, RV&NDI, etc. for scheduling retransmission.

[0370] HARQ ACK / NACK timing

[0371] According to an embodiment, DCI format 1_Y (eg, Figures 12 to 19 ) may indicate a DCI format for use by a UE (e.g., in conjunction with Figure 4 The description describes the slot level offset in the PDSCH to HARQ timing indicator DCI field of the PUCCH transmission performed by the UE).

[0372] If subslotLengthForPUCCH is not provided, the PUCCH timing may be according to the PDSCH to HARQ timing indicator DCI field according to the following embodiments.

[0373] In an embodiment, the UE may be configured to have the same time domain resource allocation (TDRA) for all co-scheduled cells (if the TDRA field is configured as a type 1 DCI field or the TDRA field is not included in the DCI and configured by RRC), and the PDSCH reception and PDSCH to HARQ timing may also be the same for all co-scheduled cells. This embodiment may be beneficial for reducing UE complexity at the expense of less scheduling flexibility between co-scheduled cells. Co-scheduled cells may be configured to be part of the same PUCCH group.

[0374] In another embodiment, for the co-scheduled cells, the UE may be configured to have different PDSCH reception timings, one co-scheduled cell may be made a reference cell, and the common PUCCH timing may be determined following the timing of the reference cell. The co-scheduled cells may be configured as part of the same PUCCH group. In another embodiment, the reference cell used to determine the common PUCCH timing may be the cell with the earliest PDSCH start timing. In another embodiment, the reference cell used to determine the common PUCCH timing may be a cell with a later PDSCH end timing among the co-scheduled cells. In another embodiment, the reference cell used to determine the common PUCCH timing may be a cell configured as a reference cell in the UE through RRC signaling.

[0375] If subslotLengthForPUCCH is provided, the PUCCH timing may be according to the following embodiments:

[0376] In another embodiment, if the UE is configured with subslotLengthForPUCCH in the PUCCH-Config of the co-scheduled cell, the first symbol of the PUCCH resource for multiplexing HARQ-ACK in PUCCH transmission provided by the PUCCH-ResourceSet or SPS-PUCCH-AN-List in the PUCCH-Config or by the n1PUCCH-AN in the SPS-Config may be relative to the symbol of the reference cell. In another embodiment, the reference cell for determining the PUCCH transmission timing may be a cell configured with the maximum value of subslotLengthForPUCCH among the co-scheduled cells. In another embodiment, the reference cell for determining the PUCCH transmission timing may be a cell configured as a reference cell through RRC. In another embodiment, the reference cell for determining the PUCCH transmission timing may be a cell configured with the earliest PDSCH symbol among the co-scheduled cells. In another embodiment, the reference cell for determining the PUCCH transmission timing may be a cell configured with a later PDSCH symbol among the co-scheduled cells.

[0377] Related technologies (available at https: / / www.3gpp.org / ftp / TSG_RAN / WG1_RL1 / TSGR1_109-e / Docs get):

[0378] R1-2203135 :Discussion on multi-cell PUSCH / PDSCH scheduling with asingle scheduling DCI, Huawei, HiSilicon

[0379] R1-2203207 :Discussion on Multi-cell PUSCH / PDSCH scheduling with asingle DCI,ZTE

[0380] R1-2203346 :Discussion on multi-cell PUSCH / PDSCH scheduling with asingle DCI,Spreadtrum Communications

[0381] R1-2203448 :Discussion on multi-cell PUSCH / PDSCH scheduling with asingle DCI,CATT

[0382] R1-2203583 :Discussion on multi-cell scheduling,vivo

[0383] R1-2203664 :Discussion on multi-cell scheduling with a single DCI,China Telecom

[0384] R1-2203688 :Discussion on Multi-cell PXSCH scheduling with asingleDCI,NEC

[0385] R1-2203706 :Discussion on multi-cell scheduling via a single DCI,Lenovo

[0386] R1-2203800 :Discussion on the design of multi-cell scheduling withasingle DCI,xiaomi

[0387] R1-2203842 :Discussions on multi-cell PUSCH / PDSCH schedulingwith asingle DCI,Langbo

[0388] R1-2203925 :Multi-cell PUSCH / PDSCH scheduling with a single DCI,Samsung

[0389] R1-2204026 :Discussion on multi-cell PUSCH / PDSCH schedulingwith asingle DCI,OPPO

[0390] R1-2204087 :Multi-cell scheduling with a single DCI,InterDigital,Inc.

[0391] R1-2204186 :Discussion on multi-cell PUSCH / PDSCH schedulingwith asingle DCI,CAICT

[0392] R1-2204262 :On multi-cell PUSCH / PDSCH scheduling with a singleDCI,Apple

[0393] R1-2204324 :Discussion on multi-cell PUSCH / PDSCH schedulingwith asingle DCI,CMCC

[0394] R1-2204398 :Discussion on multi-cell PUSCH / PDSCH schedulingwith asingle DCI,NTT DOCOMO,INC.

[0395] R1-2204631 :Discussion on Multi-cell PUSCH / PDSCH schedulingwith asingle DCI,LG Electronics

[0396] R1-2204697 :On multi-cell PUSCH / PDSCH scheduling with a singleDCI,MediaTek Inc.

[0397] R1-2204816 :Discussions on multi-cell scheduling with a single DCI,Intel Corporation

[0398] R1-2204865 :Multi-cell PUSCH / PDSCH scheduling with a single DCI,Charter Communications

[0399] R1-2204888 :Multi-cell PUSCH / PDSCH scheduling with a single DCI,Ericsson

[0400] R1-2205051 :Multi-cell PUSCH and PDSCH scheduling with a singleDCI,Qualcomm Incorporated

[0401] R1-2205073 :Discussion on Multicarrier scheduling with a single DCI,FGI

[0402] R1-2205088 :Consideration on multi-cell PUSCH / PDSCH schedulingwith asingle DCI,Fujitsu Limited

[0403] R1-2203276 :On multi-cell PUSCH / PDSCH scheduling with a singleDCI,Nokia,Nokia Shanghai Bell

[0404] R1-2205234 :Feature lead summary#1 on multi-cell PUSCH / PDSCHschedulingwith a single DCI,Moderator(Lenovo)

[0405] R1-2205235 :Feature lead summary#2 on multi-cell PUSCH / PDSCHschedulingwith a single DCI,Moderator(Lenovo)

[0406] R1-2205236 :Feature lead summary#3 on multi-cell PUSCH / PDSCHschedulingwith a single DCI,Moderator(Lenovo)

[0407] R1-2205486 ,Feature lead summary#4 on multi-cell PUSCH / PDSCHschedulingwith a single DCI,Moderator(Lenovo)

[0408] R1-2205487:Feature lead summary#5 on multi-cell PUSCH / PDSCHschedulingwith a single DCI,Moderator(Lenovo)

Claims

1. A method performed by a user equipment, comprising: receiving downlink control information (DCI) including scheduling information associated with a respective PUSCH or a respective PDSCH for a subset of cells of a plurality of cells, each of the plurality of cells being associated with a respective cell index; The DCI includes: a common field including information indicating a first cell index associated with a first cell in the cell subset and a second cell index associated with a second cell in the cell subset, wherein (i) a minimum of the first cell index or the second cell index is greater than a minimum cell index in the plurality of cells, or (ii) the first cell index and the second cell index are not consecutive cell indexes; a first independent field, the first independent field including first information in the first category of information; and a second independent field, wherein the second independent field includes second information in the first category of information; wherein the second independent field follows the first independent field in the DCI; wherein the first information is applicable to the cell with the smallest cell index in the cell subset; and The second information is applicable to a cell having a second small cell index in the cell subset; and The corresponding PUSCH is transmitted on the cell subset or the corresponding PDSCH is received on the cell subset based on the received DCI.

2. The method according to claim 1, wherein the DCI further comprises: A third independent field, wherein the third independent field includes third information in the second type of information; as well as a fourth independent field, wherein the fourth independent field includes fourth information in the second type of information; wherein the third independent field follows the second independent field in the DCI; wherein the fourth independent field follows the third independent field in the DCI; wherein the third information is applicable to the cell having the smallest cell index in the cell subset; and The fourth information is applicable to the scheduled cell with the second small cell index in the cell subset.

3. The method according to claim 1, wherein the DCI further comprises: A third independent field, wherein the third independent field includes third information in the second type of information; as well as a fourth independent field, the fourth independent field comprising fourth information in the second type of information; and wherein the third independent field follows the first independent field in the DCI; wherein the second independent field follows the third independent field in the DCI; wherein the fourth independent field follows the second independent field in the DCI; wherein the third information is applicable to the cell having the smallest cell index in the cell subset; and The fourth information is applicable to the cell with the second small cell index in the cell subset.

4. The method according to claim 1, wherein the first common field further includes information indicating a third cell index associated with a third cell in the cell subset, wherein the second cell index and the third cell index are consecutive, and The DCI further includes a third independent field, wherein the third independent field includes third information in the first type of information; wherein the third independent field follows the second independent field in the DCI; and The third information is applicable to a cell having a third small cell index in the cell subset. 5 . The method of claim 1 , wherein the DCI further comprises a second common field, the second common field comprising information applicable to a subset of cells of the plurality of cells.

6. The method of claim 5, wherein the information applicable to the subset of the plurality of cells comprises one of DCI format information, downlink assignment index information, TPC for scheduled PUCCH information, PUCCH resource indicator information, or PDSCH to HARQ timing indicator information.

7. The method according to claim 6, wherein when the information applicable to the subset of the plurality of cells includes DCI format information indicating uplink scheduling, the DCI further includes: A third common field, wherein the third common field carries a TPC for scheduled PUCCH information; as well as A fourth common field, wherein the fourth common field carries PUCCH resource indicator information.

8. The method according to claim 1, wherein the first type of information includes one of new data indicator information, redundancy version information, modulation and coding scheme information, frequency domain resource allocation information, time domain resource allocation information, or HARQ process number information.

9. The method of claim 1, wherein the DCI is received on a cell other than one of the subset of cells.

10. The method of claim 1, wherein the DCI is received on a cell having the smallest cell index in the subset of cells.

11. The method according to claim 1, further comprising: Receive RRC signaling; wherein the cell subset is represented by two or more bits in the RRC signaling; and The RRC signaling indicates a relationship between the values ​​of the two or more bits and the cell subset.

12. The method of claim 11, wherein the RRC signaling includes a cell group ID indicating the plurality of cells, and further includes corresponding cell indexes of the plurality of cells.

13. The method of claim 12, wherein the DCI is received on a cell among the plurality of cells, and the RRC signaling further comprises a cell index of a cell among the plurality of cells on which the DCI is received. The method according to claim 12 , wherein the cell group indicated by the cell group ID is a PUCCH cell group.

15. The method of claim 12, wherein the RRC signaling is included in a ServingCellConfig message.

16. An apparatus comprising: one or more processors; one or more transceivers configured to receive, using the one or more processors, downlink control information (DCI) from a base station, the downlink control information comprising scheduling information associated with a respective PUSCH or a respective PDSCH for a subset of cells of a plurality of cells, each of the plurality of cells being associated with a respective cell index; The DCI includes: a common field including information indicating a first cell index associated with a first cell in the cell subset and a second cell index associated with a second cell in the cell subset, wherein (i) a minimum of the first cell index or the second cell index is greater than a minimum cell index in the plurality of cells, or (ii) the first cell index and the second cell index are not consecutive cell indexes; a first independent field, the first independent field including first information in the first category of information; and a second independent field, wherein the second independent field includes second information in the first category of information; wherein the second independent field follows the first independent field in the DCI; wherein the first information is applicable to the cell with the smallest cell index in the cell subset; and The second information is applicable to a cell having a second small cell index in the cell subset; and The one or more transceivers are configured to transmit the corresponding PUSCH on the subset of cells or receive the corresponding PDSCH on the subset of cells based on the received DCI.

17. The apparatus according to claim 16, wherein the DCI further comprises: A third independent field, wherein the third independent field includes third information in the second type of information; as well as a fourth independent field, wherein the fourth independent field includes fourth information in the second type of information; wherein the third independent field follows the second independent field in the DCI; wherein the fourth independent field follows the third independent field in the DCI; wherein the third information is applicable to the cell having the smallest cell index in the cell subset; and The fourth information is applicable to the cell with the second small cell index in the cell subset.

18. The apparatus of claim 16, wherein the DCI further comprises: A third independent field, wherein the third independent field includes third information in the second type of information; as well as a fourth independent field, the fourth independent field comprising fourth information in the second type of information; and wherein the third independent field follows the first independent field in the DCI; wherein the second independent field follows the third independent field in the DCI; wherein the fourth independent field follows the second independent field in the DCI; wherein the third information is applicable to the cell having the smallest cell index in the cell subset; and The fourth information is applicable to the cell with the second small cell index in the cell subset.

19. The apparatus of claim 16, wherein the first common field further includes information indicating a third cell index associated with a third cell in the cell subset, wherein the second cell index and the third cell index are consecutive, and The DCI further includes a third independent field, wherein the third independent field includes third information in the first type of information; wherein the third independent field follows the second independent field in the DCI; and The third information is applicable to a cell having a third small cell index in the cell subset.

20. The apparatus of claim 16, wherein the DCI further comprises a second common field comprising information applicable to a subset of cells of the plurality of cells.

21. The apparatus of claim 20, wherein the information applicable to the subset of the plurality of cells comprises one of DCI format information, downlink assignment index information, TPC for scheduled PUCCH information, PUCCH resource indicator information, or PDSCH to HARQ timing indicator information.

22. The apparatus according to claim 21, wherein when the information applicable to the subset of the plurality of cells includes DCI format information indicating uplink scheduling, the DCI further includes: A third common field, wherein the third common field carries a TPC for scheduled PUCCH information; as well as A fourth common field, wherein the fourth common field carries PUCCH resource indicator information.

23. The apparatus according to claim 16, wherein the first type of information comprises one of new data indicator information, redundancy version information, modulation and coding scheme information, frequency domain resource allocation information, time domain resource allocation information, or HARQ process number information.

24. The apparatus of claim 16, wherein the DCI is received on a cell other than one of the subset of cells.

25. The apparatus of claim 16, wherein the DCI is received on a cell in the subset of cells having the smallest cell index.

26. The apparatus of claim 16, further comprising: the one or more transceivers configured to receive RRC signaling; wherein the cell subset is represented by two or more bits in the RRC signaling; and The RRC signaling indicates a relationship between the values ​​of the two or more bits and the cell subset.

27. The apparatus of claim 26, wherein the RRC signaling includes a cell group ID indicating the plurality of cells, and further includes corresponding cell indices of the plurality of cells.

28. The apparatus of claim 27, wherein the DCI is received on a cell among the plurality of cells, and the RRC signaling further comprises a cell index of a cell among the plurality of cells on which the DCI is received.

29. The apparatus of claim 27, wherein the cell group indicated by the cell group ID is a PUCCH cell group.

30. The apparatus of claim 27, wherein the RRC signaling is included in a ServingCellConfig message.

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