Determining a carrier for control channel transmissions

Abstract

The present application relates to methods, systems, and devices related to digital wireless communications, and more particularly, to methods, systems, and devices related to techniques for determining whether to switch carriers for control channel resources, such as physical uplink control channel (PUCCH) resources. An example method includes transmitting, by a network node, a carrier indication message to a terminal, the carrier indication message indicating a carrier via a bit field predefined by an indication field, the predefined bit field being in a control indication field. The method can further include receiving, by the network node, a second message from the terminal over the carrier indicated in the carrier indication message.

Description

TECHNICAL FIELD

[0001] The present patent application generally relates to wireless communication. BACKGROUND

[0002] Mobile communication technology is pushing the world towards an increasingly interconnected and networked society. The rapid growth of mobile communications and advances in technology have led to greater demands for capacity and connectivity. Other aspects, such as energy consumption, device cost, spectrum efficiency, and latency, are also important in meeting the needs of various communication scenarios. Various techniques are currently being discussed, including new methods to provide higher quality of service. SUMMARY

[0003] Methods, systems, and devices related to digital wireless communication are disclosed, and more particularly, methods, systems, and devices related to techniques related to determining whether to switch a carrier of a control channel transmission from a terminal to a network node are disclosed.

[0004] In one example aspect, a method for wireless communication is disclosed. The method includes transmitting, by a network node, a carrier indication message to a terminal, the carrier indication message indicating a carrier via a predefined bit field in a control indication field. The method can further include receiving, by the network node, a second message from the terminal over the carrier indicated in the carrier indication message.

[0005] In another example aspect, a method for wireless communication includes receiving, by a terminal, a carrier indication message from a network node, the carrier indication message indicating a carrier via a predefined bit field in a control indication field. The method can further include transmitting, by the terminal, a second message to the network node over the carrier indicated in the carrier indication message.

[0006] In another example aspect, a wireless communication apparatus including a processor is disclosed. The processor is configured to implement methods described herein.

[0007] In yet another example aspect, the various techniques described herein can be embodied as processor-executable code and stored on a computer-readable program medium.

[0008] The details of one or more implementations are set forth in the accompanying attachments, drawings and description below. Other features will become apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is an example block diagram representing a multi-carrier.

[0010] Figure 2is an example block diagram of a carrier for physical uplink control channel (PUCCH) transmission switching.

[0011] Figure 3 is a block diagram of an example method for determining whether to switch carriers for PUCCH resources.

[0012] Figure 4 An example of a wireless communication system to which techniques in accordance with one or more embodiments of the present technology can be applied is shown.

[0013] Figure 5 is a block diagram representation of a portion of a hardware platform. DETAILED DESCRIPTION

[0014] The section headings in this application are used merely for the convenience of the reader and do not limit the scope of the embodiments to the description in the section in which they are described. Also, although the embodiments are described with reference to a 5G example, the disclosed technology can be applied to wireless systems using protocols other than 5G or 3GPP protocols.

[0015] The development of new generation wireless communication (5G New Radio (NR) communication) is part of a continuous mobile broadband evolution process to meet the increasing demand for network capacity. NR can provide greater throughput to allow more users to be connected at the same time. Other aspects, such as energy consumption, device complexity, spectrum efficiency, and latency, are also important to meet the needs of various communication scenarios. In the current technology, if carrier aggregation is used for a terminal or user equipment (UE), the corresponding physical uplink control channel carrying a hybrid automatic repeat request acknowledgement (HARQ-ACK PUCCH) can always be transmitted in the uplink primary carrier (Pcell).

[0016] Figure 1 is an example block diagram 100 representing multiple carriers. However, in some cases, for example Figure 1 As shown, CC0 and CC1 are aggregated, where CC0 is the primary carrier and CC1 is the secondary carrier. The slot configuration of CC0 and CC1 is as shown in Figure 1indicates a downlink slot, S indicates a flexible slot, and U indicates an uplink slot. When a physical downlink shared channel (PDSCH) in the first downlink slot of CC0 is scheduled and a HARQ-ACK is required to be fed back in the third slot, but the third slot is a DL slot in CC0, the HARQ-ACK PUCCH can not be transmitted. However, the transmission of an ultra-reliable low latency communication (URLLC) service can not be delayed.

[0017] Accordingly, because the HARQ-ACK PUCCH can correspond to a UL slot in CC1, the HARQ-ACK PUCCH can be modified / switched to CC1 for transmission. This approach can also be used for other PUCCHs such as CSI PUCCH and / or SR PUCCH.

[0018] Example Embodiment 1

[0019] In example embodiment 1, a gNodeB can indicate a carrier for PUCCH transmission for a UE through a predefined bit field in DCI in a physical downlink control channel (PDCCH). Here, the PUCCH can include any one of a HARQ-ACK PUCCH, a SR PUCCH, and a CSI PUCCH, a negative acknowledgement (NACK) only PUCCH, an ACK only PUCCH, and / or a beam failure recovery (BFR) PUCCH.

[0020] Taking the HARQ-ACK PUCCH as an example, when a gNodeB schedules a PDSCH through DCI in a PDCCH, a predefined bit field in the DCI can indicate a carrier to transmit a HARQ-ACK PUCCH corresponding to the PDSCH. In this way, after receiving the DCI, the UE can receive the PDSCH according to the scheduling information in the DCI, decode the PDSCH, and transmit the corresponding HARQ-ACK PUCCH in the carrier indicated by the DCI.

[0021] When a PDSCH is scheduled and a CSI PUCCH (e.g., an A-CSI report) is triggered through DCI in a PDCCH, a gNodeB can also be a carrier to transmit the CSI PUCCH through a predefined bit field in the DCI. In this way, after receiving the DCI, the UE can transmit the CSI PUCCH in the carrier indicated by the DCI.

[0022] When transmitting the release DCI or the dormancy DCI in the PDCCH, the gNodeB can indicate the carrier to transmit the HARQ-ACK PUCCH corresponding to the release DCI or the dormancy DCI by a predefined bit field included in the release DCI or the dormancy DCI.

[0023] The predefined bit field can be a new bit field in the DCI, or an existing bit field in the DCI is re-interpreted as the predefined bit field. For example, the existing bit field can at least include a from PDSCH to corresponding HARQ-ACK feedback indication field (timing indication, recorded as k1) for describing the number of slots between the slot where the PDSCH is located and the slot where the corresponding HARQ-ACK PUCCH is located. Optionally, the field can include a PUCCH resource indication field (PUCCH resource indication, recorded as PRI) for describing the PUCCH resource in the PUCCH resource set.

[0024] To reduce the overhead of the predefined bit field in the DCI, the gNodeB can configure multiple carriers for the UE and allow PUCCH switching / transition between the multiple carriers. For example, the gNodeB can configure the multiple carriers through radio resource control (RRC) or medium access control (MAC) control element (MAC CE) signaling and transmit the PUCCH by indicating one of the multiple carriers through the predefined bit field in the DCI. The same subcarrier spacing (SCS) can be maintained for the multiple carriers to simplify the operation. In some cases, different SCSs can be allowed for the multiple carriers.

[0025] To achieve low UE cost, a new signaling 1 can be introduced to inform the gNodeB that the UE has or does not have the switching / transition capability of the carrier supporting PUCCH transmission. For example, the new signaling 1 informs the gNodeB that the UE is capable of supporting the switching / transition of the carrier for PUCCH transmission. If the gNodeB receives this new signaling 1, it can instruct the UE to switch the carrier for PUCCH transmission. Otherwise, it cannot instruct the UE to switch the carrier for PUCCH transmission (meaning PUCCH is transmitted in Pcell). As another example, the new signaling 1 informs the gNodeB that the UE is not capable of supporting the switching / transition of the carrier for PUCCH transmission. If the gNodeB receives this new signaling 1, it cannot instruct the UE to switch the carrier for PUCCH transmission. Otherwise, it can instruct the UE to switch the carrier for PUCCH transmission.

[0026] To reduce the complexity of gNodeB scheduling, a new signaling 2 can be introduced to inform the UE that the gNodeB allows (or does not allow) the UE to switch the carrier for PUCCH transmission. For example, the new signaling 2 informs the UE that the gNodeB allows the UE to switch the carrier for PUCCH transmission. If the UE receives this new signaling 2, it receives this DCI and determines the carrier for PUCCH transmission according to the predefined bit field in the DCI. Otherwise, after receiving the DCI, the UE ignores the predefined bit field in the DCI and does not determine the carrier for PUCCH transmission according to the predefined bit field (meaning PUCCH is transmitted in Pcell). As another example, the new signaling 2 informs the UE that the gNodeB does not allow the UE to switch the carrier for PUCCH transmission. If the UE receives this new signaling 2, after receiving the DCI, the UE ignores the predefined bit field in the DCI and does not determine the carrier for PUCCH transmission according to the predefined bit field (meaning PUCCH is transmitted in Pcell). Otherwise, after receiving the DCI, the UE determines the carrier for PUCCH transmission according to the predefined bit field in the DCI. The new signaling 2 can be configured to the UE by the gNodeB via RRC or MAC CE signaling.

[0027] If the predefined bit field in the DCI is a new bit field, and if the predefined bit field exists in the DCI (i.e., is configured in the DCI), it can instruct the UE to determine the carrier for PUCCH transmission according to the predefined bit field. If the predefined bit field does not exist (i.e., is not configured in the DCI), the UE defaults that PUCCH can be transmitted in Pcell and can not switch the carrier for PUCCH transmission.

[0028] If the UE determines from the predefined bit field in the DCI that it needs to switch the PUCCH transmission to another carrier, the PUCCH power indication field (transmit power control (TPC) for the scheduled PUCCH) in the DCI can be applicable to the power control of the PUCCH transmission in the other carrier. In fact, all the parameters in the DCI related to PUCCH can be applicable to the PUCCH transmission in the other carrier. For example, if the PUCCH is indicated to be transmitted in CC1, the values of the parameters in the DCI related to PUCCH (such as k1, PRI, SCS, and TPC) are determined according to the k1 set, PUCCH resource set, SCS, and TPC configured for CC1.

[0029] As a further extension, for other fields in the existing DCI, such as the TPC field, the BWP indication field (also referred to as BWP), or the SRS request field (SRS request), the high bits of these fields can be interpreted as the predefined bit field, or these fields are interpreted as the predefined bit field.

[0030] If the UE is configured with multiple carriers to switch the PUCCH transmission among these carriers, the number of bits for the PUCCH related parameter fields (such as k1, PRI, TPC) in the DCI can be determined based on the configuration information of one of the multiple carriers, and this one carrier results in the maximum number of bits.

[0031] Example Embodiment 2

[0032] In some cases, the high bits of the existing k1 field in the DCI are reinterpreted as the predefined bit field to indicate the carrier for the PUCCH transmission. In the current specification, the k1 field in the DCI can indicate the number of slot intervals between the slot of the PDSCH scheduled by the DCI and the slot of the corresponding HARQ-ACK PUCCH. Typically, 3 bits are used for the k1 field, but in some cases, 0, 1, or 2 bits are used for the k1 field by RRC configuration.

[0033] As an example, a UE reports to a gNodeB that the UE supports switching / transition of PUCCH transmission carrier and the UE is configured to allow switching / transition of PUCCH transmission carrier. For example, the UE is configured to allow switching of PUCCH transmission carrier between CC0 and CC1 by RRC signaling. Assume that the k1 field is configured to be 3 bits. Here, CC0 is a UL Pcell and CC1 is a UL Scell. Bit 1 of the high bit (the most significant bit) of the k1 field in this DCI indicates the carrier used for PUCCH transmission. For example, when the high bit of k1 is 0, it means that PUCCH is transmitted in CC0; when the high bit of k1 is 1, it means that PUCCH is transmitted in CC1 (or, for example, when the high bit of k1 is 0, it means that PUCCH is transmitted in Pcell; when the high bit of k1 is 1, it means that PUCCH is transmitted in Scell (or non-Pcell)). In conjunction with Figure 1 , by DCI, a gNodeB can schedule a PDSCH in the first slot of CC0. The gNodeB can set the high bit of the k1 field to 1 and the low bits (except for the predefined bit field) of the k1 field indicate that the HARQ-ACK PUCCH for this PDSCH is transmitted in the third slot. After receiving the DCI, the UE can recognize that the HARQ-ACK PUCCH will be transmitted in CC1 and determine that the HARQ-ACK PUCCH will be transmitted in the third slot of CC1. In some cases, the number of slot intervals is determined according to the low bit values of the k1 field in the k1 set configured for CC1.

[0034] Since only the low bits in the k1 field are used to indicate the number of slot intervals (i.e., 2 bits), the number of k1 values in the k1 set can be configured in the following ways: Case 1: (at most) 2 3 k1 values, Case 2: (at most) 2 2 k1 values. For Case 1, the gNodeB and the UE agree in advance that the low bits of the k1 field correspond to (at most) 22 k1 values in the k1 set, e.g., (at most) the first 2 2 k1 values of the k1 set.

[0035] If the k1 field is configured to be 2 bits, it can be similar to the k1 field being configured to be 3 bits. If the k1 field is configured to be bit 1 and the UE is allowed to switch / transition PUCCH transmission carrier (or if the UE is configured with switching / transition of PUCCH transmission carrier), bit 1 of the k1 field is used to indicate the carrier used for PUCCH transmission. The number of slot intervals uses the k1 value defined from the k1 set. The k1 set includes (at most) 2 1 k1 values.

[0036] If k1 field is configured as bit 0, it can indicate that switching / transition of PUCCH transmission carrier is not supported, i.e., PUCCH is transmitted in UL Pcell. The k1 set can include (at most) 2 0 K1 values, and the number of slot intervals uses the default k1 value in the k1 set. The above method can be applied to DCI 1-0, DCI 1-1 and DCI 1-2.

[0037] This can reduce the number of k1 values in the k1 set, but it can not increase the number of bits in DCI, and will not introduce new DCI formats.

[0038] If a UE is configured with multiple carriers to switch PUCCH transmission among these carriers, the number of bits for PUCCH related parameter fields (such as k1, PRI, TPC) in DCI is determined based on the configuration information of one carrier among the multiple carriers, and this one carrier causes the maximum number of bits.

[0039] Example Embodiment 3

[0040] The high bits of the existing PRI field in DCI can be reinterpreted as a predefined bit field to indicate the carrier of PUCCH transmission.

[0041] In the current specification, the PRI field in DCI can indicate the PUCCH resource in the PUCCH resource set. Generally, 3 bits can be used for the PRI field, but in some cases, 0, 1 or 2 bits can be used for the PRI field through RRC configuration.

[0042] As an example, a UE reports to gNodeB: the UE supports switching / transition of PUCCH transmission carrier, and the UE is configured to allow switching / transition of PUCCH transmission carrier. For example, the UE is configured to allow switching of PUCCH transmission carrier between CC0 and CC1 through RRC signaling. Assume that the PRI field is configured as 3 bits. Here, CC0 is UL Pcell, and CC1 is UL Scell. The bit 1 of the high bit (the highest bit) of the PRI field in this DCI indicates the carrier for PUCCH transmission. For example, when the high bit of PRI is 0, it means that PUCCH is transmitted in CC0; when the high bit of PRI is 1, it means that PUCCH is transmitted in CC1 (or, for example, when the high bit of PRI is 0, it means that PUCCH is transmitted in Pcell; when the high bit of PRI is 1, it means that PUCCH is transmitted in Scell (or non-Pcell)). In combination with the above example, the UE is configured to allow switching of PUCCH transmission carrier between CC0 and CC1, and the PRI field is configured as 3 bits. The high bit of the PRI field in this DCI indicates the carrier for PUCCH transmission. For example, when the high bit of PRI is 0, it means that PUCCH is transmitted in CC0; when the high bit of PRI is 1, it means that PUCCH is transmitted in CC1 (or, for example, when the high bit of PRI is 0, it means that PUCCH is transmitted in Pcell; when the high bit of PRI is 1, it means that PUCCH is transmitted in Scell (or non-Pcell)). Figure 1, by DCI, the gNodeB can schedule a PDSCH in the first slot of CC0. The gNodeB can set the high bits of the PRI field to 1 and the low bits of the PRI field (except for the predefined bit field) indicate that the HARQ-ACK PUCCH for this PDSCH is transmitted in the third slot. After receiving the DCI, the UE can identify that the HARQ-ACK PUCCH will be transmitted in CC1 and determine that the HARQ-ACK PUCCH will be transmitted in the third slot of CC1. In some cases, the PUCCH resource is determined according to the low bit values of the PRI field from the PUCCH data set configured for CC1.

[0043] Since only the low bits (i.e., 2 bits) in the PRI field are used to indicate the PUCCH resource in the PUCCH resource set, the number of PUCCH resources in the PUCCH resource set can be configured in the following ways: Case 1: (at most) 2 3 PUCCH resources, Case 2: (at most) 2 2 PUCCH resources. For Case 1, the gNodeB and the UE agree in advance that the low bits of the PRI field correspond to (at most) 2 2 PUCCH resources in the PUCCH resource set, for example, (at most) the first 2 2 PUCCH resources in the PUCCH resource set.

[0044] If the PRI field is configured as 2 bits, it can be similar to the PRI field being configured as 3 bits. If the PRI field is configured as bit 1 and the UE is allowed to switch / switch the PUCCH transmission carrier (or if the UE is configured with the switching / switching PUCCH transmission carrier), bit 1 of the PRI field can be used to indicate the PUCCH transmission carrier. The PUCCH resource uses the defined PUCCH resource in the PUCCH resource set. The PUCCH resource set can include (at most) 2 1 PUCCH resources.

[0045] If the PRI field is configured as bit 0, it can indicate that the switching / switching of the PUCCH transmission carrier is not supported, i.e., the PUCCH can be transmitted in the UL Pcell. The PUCCH resource set can include (at most) 2 0 PUCCH resources, and the PUCCH resource uses the default PUCCH resource in the PUCCH resource set.

[0046] The above method can be applied to DCI 1-0, DCI 1-1 and DCI 1-2. This mechanism can reduce the number of PUCCH resources in the PUCCH resource set, but it can not increase the number of bits in the DCI, and will not introduce a new DCI format.

[0047] If a UE is configured with multiple carriers to switch PUCCH transmission among these carriers, the number of bits for PUCCH related parameter fields (such as k1, PRI, TPC) in DCI is determined based on the configuration information of one carrier among the multiple carriers, and this one carrier results in the maximum number of bits.

[0048] Example Embodiment 4

[0049] Based on example embodiments 1-3, a method in example 4 can be given to indicate the carrier for PUCCH transmission. The demodulation reference signal (DMRS) sequence of PDSCH can be used to indicate the carrier for PUCCH transmission. For example, the gNodeB configures multiple candidate DMRS sequences for PDSCH transmission. For example, two DMRS sequences are configured and recorded as sequence 1 and sequence 2, respectively. When transmitting PDSCH, the gNodeB can transmit the DMRS sequence to indicate the carrier for the HARQ-ACK PUCCH of the transmitted PDSCH.

[0050] For example, please refer to Figure 1 . Assume that DMRS sequence 1 corresponds to CC0 for PUCCH transmission, and DMRS sequence 2 corresponds to CC1 for PUCCH transmission. When the gNodeB transmits PDSCH in the first slot of CC0, the gNodeB can want the HARQ-ACK PUCCH of the PDSCH to be transmitted in CC1. The gNodeB can transmit DMRS sequence 2 for decoding the PDSCH. When receiving the PDSCH, the UE can detect the corresponding DMRS sequence. The UE can find that DMRS sequence 2 is transmitted, and then the UE considers that the HARQ-ACK PUCCH of the PDSCH will be transmitted in CC1.

[0051] This mechanism can not result in signaling overhead, but can increase the complexity of DMRS sequence detection. In many cases, for one UE, the PUCCH resource set is configured per BWP (bandwidth part), i.e. all PUCCH resources in the PUCCH resource set come from the BWP of one carrier. A new method of constructing the PUCCH resource set is described below. With this new PUCCH resource set, the resource indication of the existing PUCCH can be used to dynamically switch or convert the PUCCH transmission carrier.

[0052] The present embodiments can include a PUCCH resource set configured to contain PUCCH resources from different carriers (or BWPs) of a UE. Then, a PRI (PUCCH resource indication) in a DCI in a PDCCH can be used to indicate an index of a PUCCH resource in the PUCCH resource set. As an agreement between a gNodeB and a UE, a carrier where the indicated PUCCH resource is located is a PUCCH transmission carrier (or BWP). In this way, a UE can indirectly obtain a PUCCH transmission carrier (or BWP) from a PRI. The following uses a carrier as an example.

[0053] At a gNodeB side, a gNodeB configures one or more PUCCH resource sets for a UE. A PUCCH resource set can include N PUCCH resources, some of which are from a carrier 0 (CC0) and others from a carrier 1 (CC1). In this way, a gNodeB indicates a PUCCH resource by a PRI in a DCI. If a PUCCH resource indicated by a PRI is from CC0, it can indicate that a PUCCH needs to be transmitted in CC0. If a PUCCH resource indicated by a PRI is from CC1, it means that a PUCCH needs to be transmitted in CC1.

[0054] At a UE side, a UE is configured with a PUCCH resource set containing PUCCH resources from different carriers (or BWPs). The UE receives a DCI in a PDCCH and obtains a PUCCH resource from a PRI in the DCI and determines that a carrier (or BWP) where the PUCCH resource is located is a PUCCH transmission carrier (or BWP).

[0055] For example, a gNodeB configures a UE with one or more PUCCH resource sets containing PUCCH resources from multiple carriers. For example, a PUCCH resource set contains PUCCHs from CC0 and CC1. According to the prior art, the gNodeB can configure the UE with 8 PUCCH resources in CC0 with IDs 0~7. It also configures the UE with 8 PUCCH resources in CC1 with IDs 0~7. The gNodeB can configure the PUCCH resources identified as 0~3 in CC0 and the PUCCH resources identified as 0~3 in CC1 into a PUCCH resource set. In this way, a PUCCH resource set containing PUCCH resources from multiple carriers can be constructed for the UE. Thus, the PUCCH resource set can include eight PUCCH resources from CC0 and CC1 respectively. In this PUCCH resource set, the eight PUCCH resources are configured with indices. For example, the PUCCH resources identified as 0~3 from CC0 are indexed as 0~3 in turn, while the PUCCH resources identified as 0~3 from CC1 are indexed as 4~7 in turn. Thus, in the PUCCH resource set, each PUCCH can have a unique index.

[0056] The gNodeB can indicate the PUCCH resource in the PUCCH resource set for the UE through the PRI in the DCI in the PDCCH. If the gNodeB wants the UE to transmit the PUCCH resource through CC0, it can set the PRI value to 0~3 (e.g., set PRI=1), thus requiring the PUCCH resource with index 1 in the PUCCH resource set to be transmitted through CC0 (because the PUCCH resource with index 1 is in CC0). Similarly, if the gNodeB wants the UE to transmit the PUCCH resource through CC1, it can set the PRI value to 4~7 (e.g., set PRI=4). Thus, the PUCCH resource with index 4 in the PUCCH resource set is required to be transmitted through CC1 (because the PUCCH resource with index 4 is in CC1).

[0057] On the UE side, the UE can be configured with a PUCCH resource set containing PUCCH resources from multiple carriers. Each PUCCH resource is configured with a unique index in the PUCCH data set. Then, the UE receives the DCI in the PDCCH and obtains the PUCCH resource from the PRI in the DCI. In this way, the UE can determine the carrier where the PUCCH resource is located is the PUCCH transmission carrier.

[0058] In this way, it can dynamically indicate the carrier for each PUCCH transmission to solve the problem raised in the background art. It can only be required to define that the PUCCH resource from the PUCCH resource set is from multiple carriers. Then, the PRI in the DCI can indicate the PUCCH resource from the PUCCH resource set, and indirectly indicate the carrier for the PUCCH transmission.

[0059] The gNodeB can configure the UE with multiple carriers for switching the PUCCH transmission carrier through RRC or MAC CE. The same subcarrier spacing (SCS) can be maintained for the multiple carriers to simplify the operation (different SCS is also feasible).

[0060] The PUCCH resource set containing PUCCH resources from multiple carriers can at least contain PUCCH resources in the UL Pcell. If the UE is configured with this PUCCH resource set, but the PRI field in the DCI is configured as bit 0, the gNodeB and the UE can consider that the PUCCH will be determined according to the UL Pcell and transmitted in the UL Pcell. The PUCCH includes HARQ-ACK PUCCH, SR PUCCH and CSI PUCCH, only NACK PUCCH and only ACK PUCCH and BFR PUCCH.

[0061] In order to realize low UE cost, a new signaling 1 can be introduced to inform the gNodeB that the UE has / does not have the capability to support the switching / transition of the carrier for PUCCH transmission. Here, multiple descriptions can be given. For example, the new signaling 1 informs the gNodeB that the UE is capable of supporting the switching / transition of the carrier for PUCCH transmission. If the gNodeB receives this new signaling 1, it can instruct the UE to switch the carrier for PUCCH transmission. Otherwise, it cannot instruct the UE to switch the carrier for PUCCH transmission (meaning that the PUCCH is transmitted in the Pcell). Or for example, the new signaling 1 informs the gNodeB that the UE is not capable of supporting the switching / transition of the carrier for PUCCH transmission. If the gNodeB receives this new signaling 1, it cannot instruct the UE to switch the carrier for PUCCH transmission. Otherwise, it can instruct the UE to switch the carrier for PUCCH transmission.

[0062] In order to reduce the complexity of gNodeB scheduling, a new signaling 2 can be introduced to inform the UE that the gNodeB allows (or does not allow) the UE to switch the carrier for PUCCH transmission.

[0063] If the PRI in the DCI indicates that the PUCCH needs to be transmitted in CC1, all parameters in the DCI related to the PUCCH can be applied to carrier 1. For example, the actual values of the parameters related to the PUCCH are determined according to the parameters in carrier 1. For example, if the PUCCH is indicated to be transmitted in carrier 1, the k1, PRI, subcarrier spacing (SCS) and transmission power control TPC in the DCI correspond to the configuration in CC1.

[0064] Example Embodiment 5

[0065] Example embodiment 5 can be given to indicate the carrier for PUCCH transmission. The DMRS sequence of PDSCH can be used to indicate the carrier for PUCCH transmission. For example, the gNodeB configures multiple candidate DMRS sequences for PDSCH transmission. For example, two DMRS sequences are configured and recorded as sequence 1 and sequence 2 respectively. When transmitting PDSCH, the gNodeB can transmit the DMRS sequence to indicate the carrier for the HARQ-ACK PUCCH of the transmitted PDSCH.

[0066] For example, please refer to Figure 1 . Assume that DMRS sequence 1 corresponds to CC0 for PUCCH transmission, while DMRS sequence 2 corresponds to CC1 for PUCCH transmission. When the gNodeB transmits PDSCH in the first slot of CC0, the gNodeB wants the HARQ-ACK PUCCH of the PDSCH to be transmitted in CC1. Then, the gNodeB can transmit DMRS sequence 2 for decoding the PDSCH. When receiving the PDSCH, the UE detects the corresponding DMRS sequence. The UE finds that DMRS sequence 2 is transmitted, and then the UE considers that the HARQ-ACK PUCCH of the PDSCH will be transmitted in CC1. This mechanism can not cause signaling overhead, but increases the complexity of DMRS sequence detection.

[0067] Example Embodiment 6

[0068] In many cases, the earliest transmission position allowed for the HARQ-ACK PUCCH corresponding to the PDSCH is defined by T proc，1 . Here, T proc，1 is defined as the SCS of PDCCH, the SCS of PDSCH and the SCS of PUCCH. Therefore, the SCS that maximizes T proc，1 can be selected, and then the corresponding parameters (for example, the value of N1) are determined according to the SCS to calculate T proc，1 .

[0069] Considering that the dynamic switching / transition of the PUCCH transmission carrier can impact the earliest position of the PUCCH transmission, the following describes how to define the switching / transition duration of the PUCCH transmission carrier to better determine the earliest position of the PUCCH transmission.

[0070] For simplicity of description, it is assumed that the duration required for the UE to complete the PUCCH transmission carrier switching (including the corresponding preparation work) is recorded as S1. S1 can be defined by the number of symbols, the number of slots, absolute time, or the number of sampling points. If the S1 duration is defined by the number of symbols, in the case of each type of subcarrier spacing (SCS), different numbers of symbols are defined as the S1 duration. The starting point of the S1 duration is defined as the end of the last symbol of the PDCCH used to change the PUCCH transmission carrier. Then, the duration is S1. The PUCCH transmission switching to another carrier should not be earlier than the end of S1. Of course, the T proc，1 should also be met. That is, if the carrier of the PUCCH transmission is switched / changed, the first symbol of the PUCCH transmission should not be earlier than the end of T proc，1 or S1.

[0071] Figure 2 An example is shown in FIG. 2. Figure 2 is an example block diagram 200 for PUCCH transmission switching. One PDCCH schedules one PDSCH and indicates the position of the HARQ-ACK PUCCH of the PDSCH. T proc，1 the starting position of the PDSCH scheduled by the PDCCH, and the starting position of S1 is the end of the PDCCH. The PRI in the DCI in the PDCCH indicates that the PUCCH is switched from CC0 to CC1. Then, the first symbol of the PUCCH should not be earlier than the end of T proc，1 and S1.

[0072] The time length of S1 can be obtained by actual testing, or a more relaxed S1 can be defined. Table 1 defines possible S1 durations.

[0073]

[0074] Table 1

[0075] Figure 3 is a block diagram of an example method 300 for determining whether to switch the carrier of the PUCCH resource. The method can include: sending, by a network node, a carrier indication message to a terminal, the carrier indication message indicating a carrier via a predefined bit field in a control indication field (block 302). The carrier can include a transmission resource such as CC0 or CC1 described with reference to Figure 1 . The control indication field can include a DCI.

[0076] The method can further include receiving, by the network node, a second message from the terminal over the carrier indicated in the carrier indication message (block 304). The second message can include an uplink message (PUCCH message) sent from the UE to the gNB, as described in Figure 2

[0077] In some embodiments, the carrier indication message is transmitted in a physical downlink control channel (PDCCH) message, and the second message is transmitted in a physical uplink control channel (PUCCH) message.

[0078] In some embodiments, the control indication field includes a downlink control information (DCI) field.

[0079] In some embodiments, the second message includes any one of the following messages: a hybrid automatic repeat request (HARQ) acknowledgement (ACK) PUCCH (HARQ-ACK PUCCH) message, a scheduling request (SR) PUCCH message, a channel state information (CSI) PUCCH message, a negative acknowledgement (NACK) only PUCCH message, an ACK only PUCCH message, and a beam failure recovery (BFR) PUCCH message.

[0080] In some embodiments, the carrier indication message indicates that the carrier transmits a HARQ-ACK PUCCH message corresponding to a physical downlink shared channel (PDSCH) message.

[0081] In some embodiments, the terminal is configured to receive a PDSCH according to scheduling information included in the DCI of the carrier indication message, and wherein the terminal is configured to transmit the HARQ-ACK PUCCH in the carrier indicated by the DCI of the channel indication message.

[0082] In some embodiments, when a PDSCH message is scheduled by the DCI of the carrier indication message, and a CSI PUCCH is triggered by the DCI of the carrier indication message in a PDCCH message, the carrier indication message includes a carrier transmitting the CSI PUCCH via a predefined bit field in the DCI of the carrier indication message.

[0083] In some embodiments, the carrier indication message indicates that the carrier transmits a HARQ-ACK PUCCH corresponding to a release DCI or a dormancy DCI in a predefined bit field included in the release DCI or the dormancy DCI.

[0084] ​In some embodiments, the carrier indication message indicates one of the multiple carriers configured for the terminal to allow the PUCCH switching among the multiple carriers.

[0085] In some embodiments, the method comprises receiving, by the network node from the terminal, a first signaling message indicating that the terminal can perform the switching of the carrier for the PUCCH transmission, wherein the network node is allowed to indicate the terminal to switch the carrier in the carrier indication message in response to receiving the first signaling message.

[0086] In some embodiments, the method comprises sending, by the network node to the terminal, a second signaling message indicating that the network node allows the terminal to switch the carrier for the PUCCH transmission, wherein the terminal is configured to determine the carrier for the PUCCH transmission using the carrier indication message.

[0087] In some embodiments, when multiple carriers are configured for the terminal to switch the PUCCH transmission, the number of bits of the PUCCH related parameter field in the control indication field is determined based on the configuration information of one of the multiple carriers, and the one carrier results in the maximum number of bits.

[0088] In some embodiments, a group of high bits of the k1 field of the DCI is interpreted as a predefined bit field to indicate the carrier for the PUCCH transmission.

[0089] In some embodiments, the network node is configured to schedule a physical downlink shared channel (PDSCH) in a first slot, wherein the high bits of the k1 field are set to 1, and wherein the low bits of the k1 field indicate that the HARQ-ACK PUCCH for the PDSCH is transmitted in a third slot.

[0090] In some embodiments, the k1 field of the DCI is configured to bit 1, the k1 field of the DCI indicates the carrier for the PUCCH transmission.

[0091] In some embodiments, the k1 field of the DCI is configured to bit 0, the k1 field of the DCI indicates that the switching of the PUCCH transmission carrier is not supported.

[0092] In some embodiments, a group of high bits of the PRI field in the DCI is reinterpreted as a predefined bit field to indicate the carrier for the PUCCH transmission.

[0093] In some embodiments, the network node is configured to allow the terminal to switch the carrier among multiple carriers via radio resource control (RRC) signaling.

[0094] In some embodiments, the PRI field of the DCI is configured to bit 1, the PRI field of the DCI indicates the carrier for the PUCCH transmission.

[0095] In some embodiments, the PRI field corresponding to the DCI is configured to bit 0, and the PRI field of the DCI indicates that switching of the PUCCH transmission carrier is not supported.

[0096] In some embodiments, the PUCCH resource set is configured to include PUCCH resources for the terminal from the multicarrier or bandwidth portion (BWP).

[0097] In some embodiments, the carrier indication message is a PRI field in the DCI and indicates PUCCH resources in a PUCCH resource set, which includes PUCCH resources for the terminal from multiple carriers or BWP.

[0098] In some embodiments, the PRI field in the DCI of the carrier indication message indicates the index of the PUCCH resource in the PUCCH resource set.

[0099] In some embodiments, the terminal is configured to determine, based on the PUCCH resource set, whether the carrier containing the PUCCH resource indicated by the PRI or the BWP is the PUCCH transmission carrier.

[0100] In another example embodiment, a method for wireless communication includes: receiving a carrier indication message from a network node by a terminal, the carrier indication message indicating a carrier via a predefined bit field in a control indication field. The method may further include: sending a second message from the terminal to the network node via the carrier indicated in the carrier indication message.

[0101] In some embodiments, the carrier indication message is transmitted in a physical downlink control channel (PDCCH) message, while the second message is transmitted in a physical uplink control channel (PUCCH) message.

[0102] In some embodiments, the control indication field includes a downlink control information (DCI) field.

[0103] In some embodiments, the second message includes any one of the following messages: Hybrid Automatic Repeat Request (HARQ) Acknowledgment (ACK) PUCCH (HARQ-ACK PUCCH) message, Scheduling Request (SR) PUCCH message, Channel State Information (CSI) PUCCH message, Negative Acknowledgment Only (NACK) PUCCH message, Acknowledgment Only PUCCH message, and Beam Failure Recovery (BFR) PUCCH message.

[0104] In some embodiments, the carrier indication message instructs the carrier to transmit a HARQ-ACK PUCCH message, which corresponds to a Physical Downlink Shared Channel (PDSCH) message.

[0105] In some embodiments, the terminal is configured to receive the PDSCH according to the scheduling information included in the DCI of the carrier indication message, and wherein the terminal is configured to transmit the HARQ-ACK PUCCH in the carrier indicated by the DCI of the channel indication message.

[0106] In some embodiments, the carrier indication message includes a carrier that transmits the CSI PUCCH via a predefined bit field in the DCI of the carrier indication message when the PDSCH message is scheduled by the DCI of the carrier indication message, and the CSI PUCCH is triggered by the DCI of the carrier indication message in the PDCCH message.

[0107] In some embodiments, the carrier indication message indicates a carrier that transmits the HARQ-ACK PUCCH in a predefined bit field included in a release DCI or a dormancy DCI, the HARQ-ACK PUCCH corresponding to the release DCI or the dormancy DCI.

[0108] In some embodiments, the carrier indication message indicates one of the multiple carriers configured for the terminal to allow the PUCCH switching between the multiple carriers.

[0109] In some embodiments, the method includes receiving, by the network node from the terminal, a first signaling message indicating that the terminal can perform switching of a carrier for PUCCH transmission, wherein the network node is allowed to indicate the terminal to switch the carrier in a carrier indication message in response to receiving the first signaling message.

[0110] In some embodiments, the method includes sending, by the network node to the terminal, a second signaling message indicating that the network node allows the terminal to switch the carrier for PUCCH transmission, wherein the terminal is configured to determine the carrier for PUCCH transmission using the carrier indication message.

[0111] In some embodiments, when multiple carriers are configured for the terminal to switch the PUCCH transmission, a number of bits of the PUCCH related parameter field in the control indication field is determined based on configuration information of one of the multiple carriers, and the one carrier results in a maximum number of bits.

[0112] In some embodiments, a group of high bits of the k1 field of the DCI is interpreted as a predefined bit field to indicate the carrier for PUCCH transmission.

[0113] In some embodiments, the k1 field of the DCI is configured to bit 1 to indicate the carrier for PUCCH transmission.

[0114] In some embodiments, a group of high bits of the PRI field in the DCI is reinterpreted as a predefined bit field to indicate the carrier for PUCCH transmission.

[0115] In some embodiments, a group of high bits of the PRI field in the DCI is reinterpreted as a predefined bit field to indicate the carrier for PUCCH transmission.

[0116] In some embodiments, the network node is configured to allow the terminal to switch the carrier among the multiple carriers via radio resource control (RRC) signaling.

[0117] In some embodiments, the PRI field in the DCI corresponding to the DCI is configured as bit 1, the PRI field in the DCI indicates the carrier for PUCCH transmission.

[0118] In some embodiments, the PRI field in the DCI corresponding to the DCI is configured as bit 0, the PRI field in the DCI indicates that the switching of the PUCCH transmission carrier is not supported.

[0119] In some embodiments, the PUCCH resource set is configured to include the PUCCH resources for the terminal from the multiple carriers or bandwidth parts (BWPs).

[0120] In some embodiments, the carrier indication message is the PRI field in the DCI, and indicates the PUCCH resource in the PUCCH resource set, the PUCCH resource set including the PUCCH resources for the terminal from the multiple carriers or BWPs.

[0121] In some embodiments, the PRI field in the DCI of the carrier indication message indicates the index of the PUCCH resource in the PUCCH resource set.

[0122] In some embodiments, the terminal is configured to determine, based on the PUCCH resource set, that the carrier or BWP where the PUCCH resource indicated by the PRI is located is the PUCCH transmission carrier.

[0123] Example wireless system

[0124] Figure 4An example of a wireless communication system to which the techniques according to one or more embodiments of the technology can be applied is shown. The wireless communication system 400 can include one or more base stations (BSs) 405a, 405b, one or more wireless devices or terminals 410a, 410b, 410c, 410d, and a core network 425. The base stations 405a, 405b can provide wireless service to the wireless devices 410a, 410b, 410c, and 410d in one or more wireless sectors. In some implementations, the base stations 405a, 405b include directional antennas that produce two or more directional beams to provide wireless coverage in different sectors. The base stations can implement the functions of a scheduling cell or a candidate cell, as described in this application.

[0125] The core network 425 can be in communication with the one or more base stations 405a, 405b. The core network 425 provides connectivity with other wireless communication systems and wireline communication systems. The core network can include one or more service subscription databases for storing information related to subscribed wireless devices 410a, 410b, 410c, and 410d. The first base station 405a can provide wireless service based on a first wireless access technology, while the second base station 405b can provide wireless service based on a second wireless access technology. The base stations 405a and 405b can be located at the same site, or can be installed at separate sites, depending on the deployment scenario. The wireless devices 410a, 410b, 410c, and 410d can support multiple different wireless access technologies.

[0126] In some implementations, the wireless communication system can include multiple networks that use different wireless technologies. A dual-mode or multi-mode wireless device includes two or more wireless technologies that can be used to connect to different wireless networks.

[0127] Figure 5 A block diagram representation of a hardware platform that is part of a network node or base station or terminal or wireless device (or UE) is shown. The hardware platform 505 can include processor electronics 510, such as a microprocessor implementing one or more techniques presented in this application. The hardware platform 505 can include transceiver electronics 515 to transmit and / or receive wired or wireless signals through one or more communication interfaces, such as antennas 520 or wired interfaces. The hardware platform 505 can implement other communication interfaces with defined protocols for transmitting and receiving data. The hardware platform 505 can include one or more memories (not explicitly shown) configured to store information, such as data and / or instructions. In some implementations, the processor electronics 510 can include at least a portion of the transceiver electronics 515. In some embodiments, at least some of the disclosed techniques, modules, or functions are implemented using the hardware platform 505.

[0128] CONCLUSION

[0129] The disclosed and other embodiments, modules and the functional operations described in this specification can be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed in this specification and their structural equivalents, or in combinations of one or more of them. The disclosed and other embodiments can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer readable medium for execution by, or to control the operation of, data processing apparatus. The computer readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter effecting a machine- readable propagated signal, or a combination of one or more of them. The term “data processing apparatus” encompasses all apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers. The apparatus can include, in addition to hardware, code that creates an execution environment for the computer program in question, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagated signal is an artificially generated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiver apparatus.

[0130] A computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub programs, or portions of code). A computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across multiple sites and are interconnected by a communication network.

[0131] The processes and logic flows described in this specification can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).

[0132] Processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read-only memory or a random access memory or both. The essential elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. Generally, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto-optical, or optical disks, or a computer program product suitable for storing a computer program and data. However, a computer need not have such devices. Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including by way of example semiconductor memory devices, e.g., EPROM, EEPROM, and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.

[0133] Although the present patent application contains many details, these should not be construed as limiting the scope or content of any invention to such details, but rather construed as describing features that can be specific to a particular embodiment of a particular invention. Certain features described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment can also be implemented separately or in any suitable subcombination. Moreover, although features can be described above as acting in particular combinations, one or more features from a claimed combination can in some cases be deleted, and the claimed combination can also be directed to a subcombination or variation of a subcombination.

[0134] Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring such order, nor that all illustrated operations be performed, to implement such a desired result. Additionally, the separation of various system components in the embodiments described in this patent application should not be understood as requiring such separation in all embodiments.

[0135] Only a few implementations and examples are described and other implementations, enhancements and variations can be made based on what is described and illustrated in this patent application.

Claims

1. A method for wireless communication, comprising: The network node receives a first signaling message from the terminal, the first signaling message indicating that the terminal can support the Physical Uplink Control Channel (PUCCH) carrier switching; The network node sends an indication message to the terminal in the Physical Downlink Control Channel (PDCCH), the indication message indicating the carrier via a predefined bit field in the Downlink Control Information (DCI); and The network node receives a second message from the terminal in the PUCCH on the carrier indicated by the indication message. The values ​​of the parameters associated with the PUCCH are determined based on the corresponding parameters configured for the carrier indicated by the indication message. The parameters associated with the PUCCH include at least one of k1, PUCCH resource indication PRI, transmit power control (TPC) for PUCCH, and subcarrier spacing (SCS). Where k1 is the number of time slots between the time slot where the PDSCH is located and the time slot where the HARQ-ACK PUCCH corresponding to the PDSCH is located.

2. The method according to claim 1, wherein, The second message includes any one of the following messages: Hybrid Automatic Repeat Request (HARQ) Acknowledgment (ACK) (HARQ-ACK) message, Scheduling Request (SR) message, Channel State Information (CSI) message, Negative Acknowledgment Only (NACK) message, Acknowledgment Only (ACK) message, and Beam Failure Recovery (BFR) message.

3. The method according to claim 1, wherein, The predefined bit field is included in the release DCI, or in the dormant DCI, or in the DCI that schedules the physical downlink shared channel PDSCH, and wherein the indication message is used to indicate the carrier of the HARQ-ACKPUCCH corresponding to the PDSCH, the release DCI, or the dormant DCI.

4. The method according to claim 1, further comprising: The network node sends a second signaling message to the terminal via Radio Resource Control (RRC) signaling, the second signaling message indicating, based on the indication message, to switch the carrier of PUCCH transmission among a plurality of configured carriers.

5. The method according to claim 1, wherein, In response to multiple carriers being configured as carriers for switching PUCCH transmissions, the number of bits in the PUCCH-related parameter fields in the DCI is determined based on configuration information of a carrier, wherein the carrier is from the multiple carriers and implements the maximum number of bits for the PUCCH-related parameter fields, and wherein the configuration information includes PUCCH-related parameters associated with the PUCCH-related parameter fields.

6. The method according to claim 1, wherein, The k1 field of the DCI, the PUCCH resource indication PRI field, or a set of high bits of the new bit field are used as the predefined bit field to indicate the carrier of the PUCCH transmission.

7. The method according to claim 1, wherein, The network node is configured to indicate the carrier in a new bit field, and the method further includes: In response to the fact that the new bit field is not configured in the DCI, the network node receives the second message in the PUCCH of the primary cell PCell.

8. A method for wireless communication, comprising: The terminal sends a first signaling message to the network node, the first signaling message indicating that the terminal can support physical uplink control channel (PUCCH) carrier switching; The terminal receives an indication message from the network node in the Physical Downlink Control Channel (PDCCH), the indication message indicating a carrier via a predefined bit field in the Downlink Control Information (DCI); and The terminal sends a second message to the network node in the PUCCH on the carrier indicated by the indication message. The values ​​of the parameters associated with the PUCCH are determined based on the corresponding parameters configured for the carrier indicated by the indication message. The parameters associated with the PUCCH include at least one of k1, PUCCH resource indication PRI, transmit power control (TPC) for PUCCH, and subcarrier spacing (SCS). Where k1 is the number of time slots between the time slot where the PDSCH is located and the time slot where the HARQ-ACK PUCCH corresponding to the PDSCH is located.

9. The method according to claim 8, wherein, The second message includes any one of the following messages: Hybrid Automatic Repeat Request (HARQ) Acknowledgment (ACK) (HARQ-ACK) message, Scheduling Request (SR) message, Channel State Information (CSI) message, Negative Acknowledgment Only (NACK) message, Acknowledgment Only (ACK) message, and Beam Failure Recovery (BFR) message.

10. The method according to claim 8, wherein, The predefined bit field is included in the release DCI, or in the dormant DCI, or in the DCI that schedules the physical downlink shared channel PDSCH, and wherein the indication message is used to indicate the carrier of the HARQ-ACKPUCCH corresponding to the PDSCH, the release DCI, or the dormant DCI.

11. The method of claim 8, further comprising: The terminal receives a second signaling message from the network node via Radio Resource Control (RRC) signaling, the second signaling message indicating that the terminal is permitted to switch the carrier of PUCCH transmission among a plurality of configured carriers based on the indication message.

12. The method according to claim 8, wherein, In response to multiple carriers being configured as carriers for switching PUCCH transmissions, the number of bits in the PUCCH-related parameter fields in the DCI is determined based on configuration information of a carrier, wherein the carrier is from the multiple carriers and implements the maximum number of bits for the PUCCH-related parameter fields, and wherein the configuration information includes PUCCH-related parameters associated with the PUCCH-related parameter fields.

13. The method according to claim 8, wherein, The k1 field of the DCI, the PUCCH resource indication PRI field, or a set of high bits of the new bit field are used as the predefined bit field to indicate the carrier of the PUCCH transmission.

14. The method according to claim 8, wherein, The network node is configured to indicate the carrier in a new bit field, and the method further includes: In response to the fact that the new bit field is not configured in the DCI, the network node receives the second message in the PUCCH of the primary cell PCell.

15. An apparatus for wireless communication, the apparatus comprising a processor and a memory storing instructions, wherein execution of the instructions by the processor causes the apparatus to: The terminal receives a first signaling message, which indicates that the terminal can support physical uplink control channel (PUCCH) carrier switching. In the Physical Downlink Control Channel (PDCCH), an indication message is sent to the terminal, the indication message indicating the carrier via a predefined bit field in the Downlink Control Information (DCI); and The second message from the terminal is received in the PUCCH on the carrier indicated by the indication message. in, The values ​​of the parameters associated with the PUCCH are determined based on the corresponding parameters configured for the carrier indicated by the indication message. The parameters associated with the PUCCH include at least one of k1, PUCCH resource indication PRI, transmit power control (TPC) for PUCCH, and subcarrier spacing (SCS). Where k1 is the number of time slots between the time slot where the PDSCH is located and the time slot where the HARQ-ACK PUCCH corresponding to the PDSCH is located.

16. An apparatus for wireless communication, the apparatus comprising a processor and a memory storing instructions, the processor executing the instructions causing the apparatus to: Send a first signaling message to the network node, the first signaling message indicating that the terminal can support the Physical Uplink Control Channel (PUCCH) carrier switching; The network node receives an indication message from the Physical Downlink Control Channel (PDCCH), the indication message indicating a carrier via a predefined bit field in the Downlink Control Information (DCI); and A second message is sent to the network node in the PUCCH on the carrier indicated by the indication message. in, The values ​​of the parameters associated with the PUCCH are determined based on the corresponding parameters configured for the carrier indicated by the indication message. The parameters associated with the PUCCH include at least one of k1, PUCCH resource indication PRI, transmit power control (TPC) for PUCCH, and subcarrier spacing (SCS). Where k1 is the number of time slots between the time slot where the PDSCH is located and the time slot where the HARQ-ACK PUCCH corresponding to the PDSCH is located.

17. A non-transient computer-readable medium having code stored thereon, which, when executed by a processor, causes the processor to perform the method according to any one of claims 1 to 7.

18. A non-transient computer-readable medium having code stored thereon, which, when executed by a processor, causes the processor to perform the method according to any one of claims 8 to 14.

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