Method and apparatus for determining transmission parameters

Abstract

Provided in the embodiments of the present application is an apparatus for determining transmission parameters, the apparatus being configured on a terminal device and comprising: a configuration unit which determines a carrier configuration of the terminal device, the terminal device being configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state, the second carrier is configured to use the TCI state of the first carrier, and one of the first carrier and the second carrier is an SBFD carrier, and the other is a non-SBFD carrier; and a determination unit which determines, on the basis of the TCI state configured for the first carrier or a power control parameter configured for the second carrier, a transmit power for transmission on the second carrier.

Description

Method and apparatus for determining transmission parameters Technical Field

[0001] The embodiments of this application relate to the field of communication technology. Background Technology

[0002] For Subband Non-Overlapping Full Duplex (SBFD), terminal devices can be configured with non-overlapping downlink and uplink subbands within existing downlink symbols (or time slots) or flexible symbols (or time slots), thus making that symbol (or time slot) an SBFD symbol (or time slot). Within an SBFD symbol, the terminal device can transmit uplink information on the uplink subband, or receive downlink information on the downlink subband. That is, the terminal device operates in half-duplex mode (receiving or transmitting only at the same time), while the network device can operate in full-duplex mode (receiving and transmitting simultaneously). Through SBFD, terminal devices can perform uplink transmission within existing downlink symbols or flexible symbols, effectively increasing the time-frequency resources available for uplink transmission. Therefore, it can improve uplink transmission capacity and coverage, and reduce uplink transmission latency.

[0003] Figure 1 is a schematic diagram of time-frequency domain resources configured with SBFD subbands. As shown in Figure 1, the terminal device is configured with SBFD subbands. SBFD subbands include downlink subbands and uplink subbands; for example, the uplink subband is located between two downlink subbands in the frequency domain. The time slot containing the SBFD subband is called an SBFD time slot, and the symbol containing the SBFD subband is called an SBFD symbol. Other time slots (or symbols) are called non-SBFD time slots (or symbols). By configuring SBFD subbands in some symbols, some additional symbols can be used for uplink transmission, thereby enhancing uplink coverage, increasing uplink capacity, and reducing uplink transmission latency.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Summary of the Invention

[0005] The inventors discovered that for terminal devices operating in multi-carrier mode, the multiple carriers of the terminal device may include one SBFD carrier and one non-SBFD carrier. In this case, whether and how to support cross-carrier application of TCI state is a problem that needs to be solved. For example, the TCI state of the SBFD carrier may include two sets of power control parameters, one for non-SBFD symbols and one for SBFD symbols, while the TCI state of the non-SBFD carrier only includes one set of power control parameters for non-SBFD symbols. If the SBFD carrier uses the TCI state of the non-SBFD carrier, how to determine the power control parameters for the SBFD carrier is a problem that needs to be solved; similarly, a similar problem exists when the non-SBFD carrier uses the TCI state of the SBFD carrier.

[0006] To address at least one of the above-mentioned problems or other similar issues, embodiments of this application provide a method and apparatus for determining transmission parameters.

[0007] According to one aspect of the embodiments of this application, a method for determining transmission parameters is provided, the method comprising:

[0008] The terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state and the second carrier is configured to use the TCI state of the first carrier; of the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier;

[0009] The terminal device determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0010] According to another aspect of the embodiments of this application, a means for determining transmission parameters is provided, configured in a terminal device, wherein the means includes:

[0011] A configuration unit determines the carrier configuration of the terminal device, wherein the terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier; in the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier;

[0012] The determining unit determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0013] According to another aspect of the embodiments of this application, a means for determining transmission parameters is provided, configured in a terminal device, wherein the means includes:

[0014] A configuration unit determines the carrier configuration of the terminal device, wherein the terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier; the first carrier and the second carrier are both non-SBFD carriers, or both are SBFD carriers;

[0015] The determining unit determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0016] According to another aspect of the embodiments of this application, a means for determining transmission parameters is provided, configured in a terminal device, the means comprising:

[0017] A configuration unit determines the carrier configuration of the terminal device, wherein the terminal device is configured with a first carrier and a second carrier, one of the first carrier and the second carrier being an SBFD carrier and the other being a non-SBFD carrier; the first carrier is configured with a TCI state; and the terminal device does not expect the second carrier to be configured to use the TCI state of the first carrier.

[0018] According to another aspect of the embodiments of this application, a device for determining transmission parameters is provided, wherein the device includes:

[0019] A configuration unit determines the carrier configuration of the terminal device, wherein the terminal device is configured with an SBFD carrier and the carrier is configured with a first power control parameter;

[0020] The determining unit determines the transmission power for transmission on the SBFD carrier based on the first power control parameter, wherein the transmission power for transmission on non-SBFD symbols is determined based on the first power control parameter, and the transmission power for transmission on SBFD symbols is determined based on the first power control parameter.

[0021] One of the beneficial effects of the embodiments of this application is that, on the one hand, the embodiments of this application can support the use of TCI state across SBFD carriers and non-SBFD carriers, thereby helping to reduce the signaling overhead used to indicate TCI state; when using TCI state across SBFD carriers and non-SBFD carriers, the terminal can use appropriate power control parameters to transmit on SBFD carriers or non-SBFD carriers, which can avoid undefined terminal device behavior during power control and avoid additional interference caused therefrom; on the other hand, the embodiments of this application can support the use of TCI state across carriers of the same type, thereby avoiding undefined terminal device behavior generated when using TCI state across SBFD carriers and non-SBFD carriers and avoiding additional interference caused therefrom; in addition, it also simplifies the design, reduces the impact on existing standards, and avoids introducing additional standardization work to define new terminal device behaviors.

[0022] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents.

[0023] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0024] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0025] The elements and features described in one drawing or embodiment of this application may be combined with elements and features shown in one or more other drawings or embodiments. Furthermore, in the drawings, similar reference numerals denote corresponding parts in several drawings and can be used to indicate corresponding parts used in more than one embodiment.

[0026] Figure 1 is a schematic diagram of time-domain resources configured with SBFD subbands;

[0027] Figure 2 is a schematic diagram of a communication system according to an embodiment of this application;

[0028] Figure 3 is a schematic diagram of a method for determining transmission parameters according to an embodiment of this application;

[0029] Figures 4 to 9 are schematic diagrams illustrating some examples of configuring power control parameters for different carriers according to embodiments of this application;

[0030] Figure 10 is another schematic diagram of the method for determining transmission parameters according to an embodiment of this application;

[0031] Figure 11 is another schematic diagram of the method for determining transmission parameters according to an embodiment of this application;

[0032] Figure 12 is another schematic diagram of the method for determining transmission parameters according to an embodiment of this application;

[0033] Figure 13 is another schematic diagram of the configuration method according to an embodiment of this application;

[0034] Figure 14 is another schematic diagram of the configuration method according to an embodiment of this application;

[0035] Figure 15 is another schematic diagram of the configuration method according to an embodiment of this application;

[0036] Figure 16 is another schematic diagram of the configuration method according to an embodiment of this application;

[0037] Figure 17 is a schematic diagram of a device for determining transmission parameters according to an embodiment of this application;

[0038] Figure 18 is a schematic diagram of a device for determining transmission parameters according to an embodiment of this application;

[0039] Figure 19 is a schematic diagram of a device for determining transmission parameters according to an embodiment of this application;

[0040] Figure 20 is a schematic diagram of a device for determining transmission parameters according to an embodiment of this application;

[0041] Figure 21 is a schematic diagram of a configuration device according to an embodiment of this application;

[0042] Figure 22 is a schematic diagram of a configuration device according to an embodiment of this application;

[0043] Figure 23 is a schematic diagram of a terminal device according to an embodiment of this application. Detailed Implementation

[0044] Referring to the accompanying drawings, the foregoing and other features of this application will become apparent from the following description. Specific embodiments of this application are specifically disclosed in the description and drawings, illustrating partial implementations in which the principles of this application may be employed. It should be understood that this application is not limited to the described embodiments; rather, it includes all modifications, variations, and equivalents falling within the scope of the appended claims.

[0045] In the embodiments of this application, the terms "first," "second," etc., are used to distinguish different elements by name, but do not indicate the spatial arrangement or chronological order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one or more of the terms listed in association and all combinations thereof. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0046] In the embodiments of this application, the singular forms "a," "the," etc., including the plural forms, should be broadly understood as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms, unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.

[0047] In the embodiments of this application, the term "communication network" or "wireless communication network" may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0048] Furthermore, communication between devices in a communication system can be carried out according to communication protocols at any stage, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), future 6G, etc., and / or other currently known or future communication protocols.

[0049] In the embodiments of this application, the term "network device" refers, for example, to a device in a communication system that connects a terminal device to a communication network and provides services to that terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0050] Base stations can include, but are not limited to: NodeBs (or NBs), evolved NodeBs (eNodeBs or eNBs), and 5G base stations (gNBs), IAB hosts, etc. They can also include Remote Radio Heads (RRHs), Remote Radio Units (RRUs), relays, or low-power nodes (e.g., femeto, pico, etc.). The term "base station" can include some or all of their functions, and each base station can provide communication coverage to a specific geographic area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0051] In the embodiments of this application, the terms "User Equipment" (UE) or "Terminal Equipment" (TE) refer, for example, to a device that accesses a communication network and receives network services through a network device. A terminal device can be fixed or mobile, and may also be referred to as a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), station, etc.

[0052] Terminal devices may include, but are not limited to, the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptops, cordless phones, smartphones, smartwatches, digital cameras, etc.

[0053] For example, in scenarios such as the Internet of Things (IoT), terminal devices can also be machines or devices for monitoring or measurement, such as including but not limited to: machine-type communication (MTC) terminals, vehicle communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, and so on.

[0054] Furthermore, the terms "network side" or "network equipment side" refer to one side of the network, which can be a base station or include one or more network devices as described above. The terms "user side," "terminal side," or "terminal equipment side" refer to the side of the user or terminal, which can be a UE or include one or more terminal devices as described above. Unless otherwise specified, "equipment" can refer to either network equipment or terminal equipment.

[0055] The following examples illustrate the scenarios of embodiments of this application, but this application is not limited thereto.

[0056] Figure 2 is a schematic diagram of a communication system according to an embodiment of this application, illustrating the case of a terminal device and a network device as examples. As shown in Figure 2, the communication system 100 may include a network device 101 and terminal devices 102 and 103. For simplicity, Figure 2 only illustrates the case of two terminal devices and one network device, but the embodiments of this application are not limited to this.

[0057] In this embodiment of the application, network device 101 and terminal devices 102 and 103 can transmit existing services or services that can be implemented in the future. For example, these services may include, but are not limited to: enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

[0058] It is worth noting that Figure 2 shows that both terminal devices 102 and 103 are within the coverage area of ​​network device 101, but this application is not limited to this. Both terminal devices 102 and 103 may be outside the coverage area of ​​network device 101, or one terminal device 102 may be within the coverage area of ​​network device 101 while the other terminal device 203 may be outside the coverage area of ​​network device 101.

[0059] In the embodiments of this application, the signaling may be, for example, Radio Resource Control (RRC) signaling; for example, referred to as an RRC message, including MIB, system information, dedicated RRC messages; or referred to as an RRC information element. The signaling may also be, for example, Medium Access Control (MAC) signaling; or referred to as a MAC control element. However, this application is not limited to these.

[0060] In the following explanation, without confusion, the terms "PUSCH" and "Physical Uplink Data Channel" or "Uplink Data" are used interchangeably. Furthermore, sending or receiving a PUSCH can be understood as sending or receiving uplink data carried by the PUSCH. Similarly, the terms "PDSCH" and "Physical Downlink Data Channel" or "Downlink Data" are used interchangeably. Furthermore, sending or receiving a PDSCH can be understood as sending or receiving downlink data carried by the PDSCH. Additionally, expressions such as "when…", "if…", and "under…" have the same meaning and are used interchangeably.

[0061] In this embodiment, as shown in Figure 1, the SBFD subband includes an uplink subband and a downlink subband. Some time slots contain SBFD subbands; these time slots are SBFD time slots, and the symbols they include are SBFD symbols. Some time slots do not contain SBFD subbands; these time slots are non-SBFD time slots, and the symbols they include are non-SBFD symbols. It is also possible for a time slot to include both SBFD and non-SBFD symbols, which are not all examples. By configuring SBFD subbands in some symbols, some additional symbols can be used for uplink transmission, thereby enhancing uplink coverage, increasing uplink capacity, and reducing uplink transmission latency.

[0062] In the embodiments of this application, "SBFD symbol" can be replaced with "SBFD time slot", and "non-SBFD symbol" can be replaced with "non-SBFD time slot".

[0063] A carrier (or cell) can be configured with SBFD subbands, called an SBFD carrier. A portion of the bandwidth (BWP) of a carrier overlaps with an SBFD subband in the frequency domain; therefore, this BWP includes both SBFD and non-SBFD symbols. For simplicity, SBFD carrier can also refer to the BWP within that carrier that overlaps with the SBFD subband. A carrier without configured SBFD subbands can be called a non-SBFD carrier; a non-SBFD carrier does not include SBFD symbols, only non-SBFD symbols.

[0064] In this embodiment, the terminal device receives configuration information from the network device. This configuration information is used to configure the time-domain and / or frequency-domain positions of the SBFD sub-band. Therefore, the terminal device can determine which symbols are SBFD symbols and which are non-SBFD symbols based on the configuration information.

[0065] The interference environments of SBFD symbols and non-SBFD symbols are different. For example, inter-subband interference (ISI) exists within SBFD symbols, where downlink subbands leak into uplink subbands, and vice versa. In contrast, such ISI does not exist within non-SBFD symbols. Therefore, transmission on SBFD symbols and transmission on non-SBFD symbols require independent power control. Uplink transmission on both non-SBFD and SBFD symbols can have its transmit power determined according to the following formula, where the power control parameters used to determine the transmit power can be independent.

[0066] Specifically, the terminal device uses the parameter set with index j and the closed-loop power control state with index l to transmit PUSCH on the active uplink BWP (Bandwidth Part) b of the carrier f of the serving cell c, and the PUSCH transmission power P at PUSCH transmission occasion i. PUSCH,b,f,c (i,j,q d ,l) can be determined according to formula (1).

[0067] Among them, P CMAX,f,c (i) represents the maximum transmit power; P O_PUSCH,b,f,c (j)=P O_NOMINAL,PUSCH,f,c (j)+P O_UE_PUSCH,b,f,c (j) represents the power target value (i.e., the target received power), where P O_NOMINAL,PUSCH,f,c (j) represents the cell-specific target received power, P O_UE_PUSCH,b,f,c (j) represents the UE-specific target received power; α b,f,c (j) represents the road loss compensation factor; PL b,f,c (q d ) represents the road loss value, q d Indicates the index of the path loss reference signal; f b,f,c (i,l) represents the closed-loop power control adjustment state, where l represents the index of the closed-loop power control state, which can also be called the power control adjustment state; Δ TF,b,f,c(i) represents the power offset determined by the MCS (Modulation and Coding Scheme); This indicates the number of Resource Blocks (RBs) occupied by PUSCH.

[0068] Furthermore, the terminal device uses the closed-loop power control state with index l to transmit PUCCH on the active uplink BWP b of carrier f in serving cell c, and the PUCCH transmission power P at PUCCH transmission opportunity i. PUCCH,b,f,c (i,q u ,q d ,l) can be determined according to formula (2).

[0069] Among them, P CMAX,f,c (i) represents the maximum transmit power; P O_PUCCH,b,f,c (q u ) = P O_NOMINAL,PUCCH +P O_UE_PUCCH (q u ) represents the target power value, where P O_NOMINAL,PUCCH P represents the target received power specific to the cell. O_UE_PUCCH (q u ) represents the UE-specific target received power; PL b,f,c (q d ) represents the road loss value, q d Indicates the index of the path loss reference signal; g b,f,c (i,l) represents the closed-loop power control adjustment state, and l represents the index of the closed-loop power control state; Δ F_PUCCH (F) and Δ TF,b,f,c (i) indicates the power offset associated with the PUCCH format; This indicates the number of RBs occupied by PUCCH.

[0070] Additionally, the terminal device uses the closed-loop power control state with index l to transmit SRS on the active uplink BWP b of carrier f in serving cell c, and the SRS transmission power P at SRS transmission opportunity i. SRS,b,f,c (i,q s ,l) can be determined according to formula (3).

[0071] Among them, P CMAX,f,c (i) represents the maximum transmit power; P O_SRS,b,f,c (q s ) represents the target power value; α SRS,b,f,c (q s ) represents the road loss compensation factor; PL b,f,c (q d ) represents the road loss value, q dIndicates the index of the path loss reference signal; h b,f,c (i,l) represents the closed-loop power control adjustment state, and l represents the index of the closed-loop power control state; M ARS,b,f,c (i) represents the number of RBs occupied by SRS.

[0072] Rel-17 standardizes the unified transmission configuration indication (TCI) state. The Rel-17 unified TCI state is designed for sTRP scenarios, where the TCI field of DCI format 1_1 or DCI format 1_2 indicates one or more TCI states. DCI format 1_1 or DCI format 1_2 can schedule downlink data (referred to as DCI format 1_1 / 1_2 with DL assignment) or not schedule downlink data (referred to as DCI format 1_1 / 1_2 without DL assignment).

[0073] The indication or update of the TCI state includes the indication or update of the beam used by the terminal equipment. For the unified TCI state, the higher-layer parameter "unifiedTCI-StateType" can be configured to use a joint TCI state or a separate TCI state. When the "unifiedTCI-StateType" parameter is set to 'joint', the TCI state is a joint TCI state; when the "unifiedTCI-StateType" parameter is set to 'separate', the TCI state is a downlink TCI state and / or an uplink TCI state. The uplink beam is also called the uplink transmit spatial filter. For Rel-17 unified TCI, a TCI field indicates a joint TCI state, or a downlink TCI state, or an uplink TCI state, or a downlink TCI state and an uplink TCI state. If a cell is configured with unifiedTCI-StateType, the cell uses the unified TCI state. A TCI state can be applied to a carrier or multiple carriers in a list. Without loss of generality, “a TCI state applied to a carrier” also means “a TCI state applied to a BWP of a carrier”.

[0074] Furthermore, the indication or update of the TCI state also includes the indication or update of the power control parameters used by the terminal equipment. For a unified TCI state, the TCI state IE includes power control parameters (including at least one of the target received power, path loss compensation factor, and closed-loop power control state index). For uplink transmission, the terminal equipment also applies the power control parameters in the TCI state when applying the TCI state.

[0075] The embodiments of this application will now be described with reference to the accompanying drawings.

[0076] First aspect of the embodiments

[0077] This application provides a method for determining transmission parameters, which is applied to a terminal device. Figure 3 is a schematic diagram of the method for determining transmission parameters according to an embodiment of this application. As shown in Figure 3, the method includes:

[0078] 310. The terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state and the second carrier is configured to use the TCI state of the first carrier; in the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier;

[0079] 320. The terminal device determines the transmission power for the transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0080] For example, a terminal device may be configured with multiple carriers, operating in multi-carrier or carrier aggregation (CA) mode. These carriers can be referred to as component carriers (CCs) or cells. Of the multiple CCs, CC1 and CC2, one is an SBFD CC and the other is a non-SBFD CC; for example, CC1 is a non-SBFD CC and CC2 is an SBFD CC; or, for another example, CC1 is an SBFD CC and CC2 is a non-SBFD CC.

[0081] For example, CC1 is configured with a TCI state set, while CC2 is not configured with a TCI state set, but CC2 is configured to use CC1's TCI state set. When CC2 uses the TCI state from that TCI state set, it is equivalent to CC2 using CC1's TCI state.

[0082] In the above embodiments, the SBFD CC can use the TCI state of a non-SBFD CC, or the non-SBFD CC can use the TCI state of the SBFD CC. For transmission on CC2, if CC2 is not configured with power control parameters, the transmission power can be determined based on the power control parameters of the TCI state of CC1; if CC2 is configured with power control parameters, the transmission power can be determined based on the power control parameters configured for CC2.

[0083] It is worth noting that Figure 3 above is only an illustrative description of the embodiments of this application, but this application is not limited thereto. For example, the execution order between various operations can be appropriately adjusted, and other operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description in Figure 3 above.

[0084] According to the above embodiments, the use of TCI state across SBFD carriers and non-SBFD carriers can be supported, which helps to reduce the signaling overhead used to indicate TCI state. When TCI state is used across SBFD carriers and non-SBFD carriers, the terminal can use appropriate power control parameters to transmit on SBFD carriers or non-SBFD carriers, which can avoid undefined terminal device behavior during power control and avoid additional interference caused therefrom.

[0085] In the embodiments of this application, the TCI state can be a combined TCI state, a downlink TCI state, or an uplink TCI state.

[0086] For example, within the unified TCI state framework, DCI or MAC CE indicates a TCI state. Uplink or downlink transmissions apply this indicated TCI state, also known as applying the unified TCI state. Some channels or signals apply the unified TCI state, while others may not.

[0087] In this embodiment of the application, the first carrier is configured with a TCI state, which may be a set of TCI states configured for the first carrier.

[0088] For example, a CC can be configured with a set of TCI states, or a TCI state pool. MAC CE can activate multiple TCI states in the TCI state set, and DCI indicates one of the activated TCI states, which is applied to the CC as an indicated TCI state; alternatively, MAC CE can activate only one TCI state in the TCI state set, which is applied to the CC as an indicated TCI state.

[0089] In the embodiments of this application, the first carrier and the second carrier can be component carriers (CC) or the bandwidth portion (BWP) of component carriers (CC).

[0090] For example, "a CC" can be replaced with "a BWP of a CC". Similarly, "TCI state applied to a CC" can be replaced with "TCI state applied to a BWP of a CC". Furthermore, "a CC is configured with a set of TCI states" can be replaced with "a BWP of a CC is configured with a set of TCI states". A BWP can be an uplink BWP or a downlink BWP. "A CC" can also be replaced with "a BWP". Without loss of generality, "BWP of a CC", "CC", and "BWP" are used interchangeably.

[0091] In this embodiment of the application, the terminal device may also determine quasi-co-address and / or spatial filter for transmission on the second carrier based on the TCI state configured for the first carrier.

[0092] For example, for transmissions on CC2, the quasi-co-addressable (QCL) and / or spatial filter are determined based on the TCI state of CC1.

[0093] Assuming a TCI state is applied to a specific control center (CC), for uplink and downlink transmissions on that CC, the terminal equipment determines the quasi-co-location (QCL) and / or spatial filter based on this TCI state. For example, the terminal equipment determines the QCL assumption for the DM-RS of the PDSCH, the DM-RS of the PDCCH, or the CSI-RS. Similarly, the terminal equipment determines the uplink transmission spatial filter (UL TX spatial filter) for the PUSCH, PUCCH, or SRS. The CSI-RS or SRS is the CSI-RS or SRS applying the unified TCI state.

[0094] In some embodiments, a CC is associated with a TCI state set, and the CC uses the TCI states in that TCI state set. To determine the TCI state set of a particular CC, a CC can be configured with a TCI state set, or a CC (CC1) can be configured not to use any TCI state set, but instead to use the TCI state set of another CC (CC2).

[0095] For example, CC1's BWP1 is not configured with a TCI state set, but instead with a unifiedTCI-StateRef, which indicates CC2 and BWP2; CC2's BWP2 is configured with TCI state set 2. In this case, CC1's BWP1 is associated with TCI state set 2 and uses the TCI state in TCI state set 2. For simplicity, this can also be described as CC1 not being configured with a TCI state, CC2 being configured with a TCI state, CC1 using CC2's TCI state, or CC2's TCI state being applied to CC1. TCI states in TCI state set 2 can be applied to CC1 and / or CC2. For example, DCI indicates a TCI state in TCI state set 2 that is applied to both CC1 and CC2. For example, DCI1 indicates a TCI state in TCI state set 2 for CC1 that is applied to CC1; and / or, DCI2 indicates a TCI state in TCI state set 2 for CC2 that is applied to CC2.

[0096] In this embodiment of the application, the power control parameters may include at least one of the target received power, path loss compensation factor, and closed-loop power control state index.

[0097] For example, a TCI state can be configured with power control parameters, so that the uplink transmission power within a BWP (or CC) applying the TCI state is determined according to the power control parameters of the TCI state, wherein the BWP is not configured with any power control parameters; or, the TCI state may not be configured with any power control parameters, but the BWP applying the TCI state is configured with power control parameters, so that the uplink transmission power within the BWP is determined according to the power control parameters of the BWP.

[0098] For example, suppose the terminal device uses BWP1 of CC1 and BWP2 of CC2 for transmission. BWP1 of CC1 includes the SBFD subband, and therefore includes both SBFD and non-SBFD symbols. BWP2 of CC2 does not include the SBFD subband, and therefore only includes non-SBFD symbols. For simplicity, CC1 can be referred to as SBFD CC, CC2 as non-SBFD CC, "TCI state applied to BWP1 or CC1" can be referred to as "TCI state applied to SBFD CC", and "TCI state applied to BWP2 or CC2" can be referred to as "TCI state applied to non-SBFD CC".

[0099] For CC1, BWP1 can be configured with both non-SBFD power control parameters and SBFD power control parameters. Alternatively, the TCI state applied to BWP1 can be configured with both non-SBFD power control parameters and SBFD power control parameters. The non-SBFD power control parameters are used to determine the transmit power for uplink transmission on non-SBFD symbols, while the SBFD power control parameters are used to determine the transmit power for uplink transmission on SBFD symbols.

[0100] For CC2, BWP2 can be configured with non-SBFD power control parameters, or the TCI state applied to BWP2 can be configured with non-SBFD power control parameters, which are used to determine the transmit power for uplink transmission on non-SBFD symbols.

[0101] For example, for CC1 and CC2, if the BWP is configured with power control parameters, the TCI state applied to the BWP is not configured with power control parameters; if the TCI state applied to the BWP is configured with power control parameters, the BWP is not configured with power control parameters; power control parameters include non-SBFD power control parameters and / or SBFD power control parameters.

[0102] Suppose BWP1 is not configured with a TCI state set, while BWP2 is configured with a TCI state set, and BWP1 is configured to use BWP2's TCI state set. In this case, determining the power control parameters for BWP1 is the problem to be solved. Similarly, if BWP1 is configured with a TCI state set, BWP2 is not configured with a TCI state set, and BWP2 is configured to use BWP1's TCI state set, then determining the power control parameters for BWP2 is the problem to be solved.

[0103] Since BWP1 and BWP2 are located in CC1 and CC2 respectively, BWP1 using the TCI state of BWP2 is considered cross-CC TCI state usage. To highlight this cross-CC characteristic, it is simply referred to as CC1 using CC2's TCI state, i.e., SBFD CC using a non-SBFD CC's TCI state. Without loss of generality, for a certain BWP in a certain CC, "BWP" and "CC" can be used interchangeably; for example, to highlight the cross-CC characteristic, when referring to "BWP", "CC" can be used instead; for example, "BWP is configured with a set of TCI states" can be referred to as "CC is configured with a set of TCI states" or "CC is configured with TCI states", "BWP is configured with power control parameters" can be referred to as "CC is configured with power control parameters", "TCI state or power control parameters applied to BWP" can be referred to as "TCI state or power control parameters applied to CC", and "BWP is configured with power control parameters" can be referred to as "CC is configured with power control parameters".

[0104] Therefore, for a control class (CC), the power control parameters used for that CC can be either the power control parameters configured for that CC, or the power control parameters applied to the TCI state of that CC. In this case, how to determine the power control parameters for an SBFD CC is a problem that needs to be solved. Similarly, if a non-SBFD CC can use the TCI state of an SBFD CC, how to determine the power control parameters for the non-SBFD CC is a problem that needs to be solved.

[0105] According to embodiments of this application, in some embodiments, the first carrier is a non-SBFD carrier, and the second carrier is an SBFD carrier; the TCI state configured for the first carrier is configured with a first power control parameter; the second carrier is not configured with a power control parameter; for transmission on the second carrier, the transmission power is determined according to the first power control parameter.

[0106] In the above embodiments, the terminal device can also determine quasi-co-address and / or spatial filters for transmission on the second carrier based on the TCI state configured for the first carrier.

[0107] Figure 4 is a schematic diagram of power control parameters configured for different carriers according to an embodiment of this application.

[0108] As shown in Figure 4, CC1 (the second carrier) is an SBFD carrier, and CC2 (the first carrier) is a non-SBFD carrier. CC1 is not configured with a TCI state, while CC2 is configured with a TCI state. CC1 uses the TCI state of CC2. The TCI state is configured with the first power control parameter for CC2. CC1 is not configured with the third and fourth power control parameters, and CC2 is not configured with the second power control parameter. For transmission on CC2, the quasi-co-addressable and / or spatial filter is determined according to the TCI state of CC2, and the transmit power is determined according to the first power control parameter of the TCI state. For transmission on CC1, the quasi-co-addressable and / or spatial filter is determined according to the TCI state of CC2, and the transmit power is determined according to the first power control parameter of the TCI state.

[0109] In the above embodiments, the transmission power is determined according to the first power control parameter, including: the transmission power for transmission on non-SBFD symbols is determined according to the first power control parameter, and the transmission power for transmission on SBFD symbols is determined according to the first power control parameter.

[0110] For example, for CC1, the transmit power is determined according to the first power control parameter of the TCI state. More specifically, for transmissions on non-SBFD symbols, the transmit power is determined according to the first power control parameter; for transmissions on SBFD symbols, the transmit power is also determined according to the first power control parameter.

[0111] According to embodiments of this application, in some embodiments, the first carrier is a non-SBFD carrier, and the second carrier is an SBFD carrier; the TCI state configured for the first carrier is not configured with power control parameters; the second carrier is configured with third power control parameters; for transmission on the second carrier, the transmission power is determined according to the third power control parameters.

[0112] In the above embodiments, the terminal device can also determine quasi-co-address and / or spatial filters for transmission on the second carrier based on the TCI state configured for the first carrier.

[0113] Figure 5 is another schematic diagram of power control parameters configured for different carriers according to an embodiment of this application.

[0114] As shown in Figure 5, CC1 (the second carrier) is an SBFD carrier, and CC2 (the first carrier) is a non-SBFD carrier. CC1 is not configured with a TCI state, while CC2 is configured with a TCI state, and CC1 uses the TCI state of CC2. The TCI state is not configured for the first power control parameter of CC2. CC1 is only configured with the third power control parameter, and not the fourth power control parameter. CC2 is configured with the second power control parameter for transmission on the symbols of CC2 (i.e., non-SBFD symbols). For transmission on CC2, the quasi-co-address and / or spatial filter is determined according to the TCI state of CC2, and the transmit power is determined according to the second power control parameter of CC2. For transmission on CC1, the quasi-co-address and / or spatial filter is determined according to the TCI state of CC2, and the transmit power is determined according to the third power control parameter of CC1.

[0115] In the above embodiments, the transmission power is determined according to the third power control parameter, including: the transmission power for transmission on non-SBFD symbols is determined according to the third power control parameter, and the transmission power for transmission on SBFD symbols is determined according to the third power control parameter.

[0116] For example, when CC1 is configured with only the third power control parameter, the third power control parameter is used for transmissions on both non-SBFD symbols and SBFD symbols of CC1. For CC1, the transmit power is determined according to the third power control parameter. More specifically, for transmissions on non-SBFD symbols, the transmit power is determined according to the third power control parameter; for transmissions on SBFD symbols, the transmit power is also determined according to the third power control parameter.

[0117] According to embodiments of this application, in some embodiments, the first carrier is a non-SBFD carrier, and the second carrier is an SBFD carrier; the TCI state configured for the first carrier is not configured with power control parameters; the second carrier is configured with third and fourth power control parameters; for transmission on the second carrier, the transmission power is determined according to the third and fourth power control parameters.

[0118] Figure 6 is another schematic diagram of power control parameters configured for different carriers according to an embodiment of this application.

[0119] As shown in Figure 6, CC1 (the second carrier) is an SBFD carrier, and CC2 (the first carrier) is a non-SBFD carrier. CC1 is not configured with a TCI state, while CC2 is configured with a TCI state, and CC1 uses the TCI state of CC2. The TCI state is not configured with the first power control parameter for CC2. CC1 is configured with a third and a fourth power control parameter. The third power control parameter is used for transmission on non-SBFD symbols of CC1, and the fourth power control parameter is used for transmission on SBFD symbols of CC1. CC2 is configured with a second power control parameter for transmission on symbols of CC2 (i.e., non-SBFD symbols). For transmission on CC2, the quasi-co-location and / or spatial filter is determined according to the TCI state of CC2, and the transmit power is determined according to the second power control parameter of CC2. For transmission on CC1, the quasi-co-location and / or spatial filter is determined according to the TCI state of CC2, and the transmit power is determined according to the third and fourth power control parameters of CC1.

[0120] In the above embodiments, the transmission power is determined according to the third power control parameter and the fourth power control parameter, including: the transmission power for transmission on non-SBFD symbols is determined according to the third power control parameter, and the transmission power for transmission on SBFD symbols is determined according to the fourth power control parameter.

[0121] For example, for CC1, the transmit power is determined based on the third and fourth power control parameters of CC1. More specifically, for transmissions on non-SBFD symbols, the transmit power is determined based on the third power control parameter; for transmissions on SBFD symbols, the transmit power is determined based on the fourth power control parameter.

[0122] According to embodiments of this application, in some embodiments, the first carrier is an SBFD carrier and the second carrier is a non-SBFD carrier; the TCI state configured for the first carrier is configured with a fifth power control parameter and a sixth power control parameter; the second carrier is not configured with power control parameters; for transmission on the second carrier, the transmission power is determined according to the fifth power control parameter.

[0123] Figure 7 is another schematic diagram of power control parameters configured for different carriers according to an embodiment of this application.

[0124] As shown in Figure 7, CC1 (the first carrier) is an SBFD carrier, and CC2 (the second carrier) is a non-SBFD carrier. The similarities to the previous embodiments will not be repeated. CC1 is configured with a TCI state, while CC2 is not configured with a TCI state; CC2 uses the TCI state of CC1. The TCI state is configured with power control parameters for CC1, for example, a fifth power control parameter for non-SBFD symbols and a sixth power control parameter for SBFD symbols. CC1 is not configured with a third or fourth power control parameter. CC2 is not configured with a second power control parameter. For transmissions on CC1, the quasi-co-addressable and / or spatial filtering is determined according to the TCI state of CC1, and the transmit power is determined according to the fifth and sixth power control parameters of the TCI state. More specifically, for transmissions on non-SBFD symbols, the transmit power is determined according to the fifth power control parameter; for transmissions on SBFD symbols, the transmit power is determined according to the sixth power control parameter. For transmissions on CC2, the quasi-co-addressable and / or spatial filter is determined according to the TCI state of CC1, and the transmit power is determined according to the fifth power control parameter of the TCI state. In some other embodiments, for transmissions on CC2, the transmit power may also be determined according to the sixth power control parameter of the TCI state, or the transmit power may be configured to be determined according to either the fifth or sixth power control parameter.

[0125] According to embodiments of this application, in some other embodiments, the first carrier is an SBFD carrier and the second carrier is a non-SBFD carrier; the TCI state configured for the first carrier is configured with a fifth power control parameter; the second carrier is not configured with a power control parameter; for transmission on the second carrier, the transmission power is determined according to the fifth power control parameter.

[0126] Figure 8 is another schematic diagram of power control parameters configured for different carriers according to an embodiment of this application.

[0127] As shown in Figure 8, the difference from Figure 7 is that the TCI state of CC1 is only configured with the fifth power control parameter, and not the sixth power control parameter. In this case, the fifth power control parameter is used for transmissions on both non-SBFD symbols and SBFD symbols of CC1. For transmissions on CC1, the transmit power is determined according to the fifth power control parameter of the TCI state. More specifically, for transmissions on non-SBFD symbols, the transmit power is determined according to the fifth power control parameter; for transmissions on SBFD symbols, the transmit power is also determined according to the fifth power control parameter. For transmissions on CC2, the transmit power is determined according to the fifth power control parameter of the TCI state.

[0128] According to embodiments of this application, in some other embodiments, the first carrier is an SBFD carrier and the second carrier is a non-SBFD carrier; the TCI state configured for the first carrier is not configured with power control parameters; the second carrier is configured with second power control parameters; for transmission on the second carrier, the transmission power is determined according to the second power control parameters.

[0129] Figure 9 is another schematic diagram of power control parameters configured for different carriers according to an embodiment of this application.

[0130] As shown in Figure 9, CC1 (the first carrier) is an SBFD carrier, and CC2 (the second carrier) is a non-SBFD carrier. The similarities to the previous embodiments will not be repeated. CC1 is configured with a TCI state, while CC2 is not configured with a TCI state; CC2 uses the TCI state of CC1. The TCI state is not configured with power control parameters for CC1; for example, the fifth power control parameter for non-SBFD symbols and the sixth power control parameter for SBFD symbols are not configured. CC1 is configured with the third and fourth power control parameters. CC2 is configured with the second power control parameter. For transmissions on CC1, the quasi-co-location and / or spatial filtering is determined according to the TCI state of CC1, and the transmit power is determined according to the third and fourth power control parameters of CC1. More specifically, for transmissions on non-SBFD symbols, the transmit power is determined according to the third power control parameter; for transmissions on SBFD symbols, the transmit power is determined according to the fourth power control parameter. For transmissions on CC2, the quasi-co-location and / or spatial filtering is determined according to the TCI state of CC1, and the transmit power is determined according to the second power control parameter of CC2.

[0131] In the embodiments of this application, "carrier configured with power control parameters" or "TCI state configured with power control parameters" can be configured via RRC signaling.

[0132] For example, "the carrier is configured with the third and fourth power control parameters" or "the TCI state is configured with the fifth and sixth power control parameters" can be configured via the following RRC signaling. The carrier's uplink BWP (BWP-UplinkDedicated) is associated with the first power control parameter (p0AlphaSetforPUSCH or p0AlphaSetforPUCCH or p0AlphaSetforSRS) and the second power control parameter (p0AlphaSetforPUSCH-SBFD or p0AlphaSetforPUCCH-SBFD or p0AlphaSetforSRS-SBFD) via Uplink-powerControlId. The TCI state (TCI-State or TCI-UL-State) is associated with the fifth power control parameter (p0AlphaSetforPUSCH or p0AlphaSetforPUCCH or p0AlphaSetforSRS) and the sixth power control parameter (p0AlphaSetforPUSCH-SBFD or p0AlphaSetforPUCCH-SBFD or p0AlphaSetforSRS-SBFD) via Uplink-powerControlId.

[0133] The following is an example of the above configuration, but this application is not limited to it.

[0134] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined. As another example, the embodiments of Figures 4 to 9 can be fully supported, or only partially supported, that is, only one or more of the embodiments of Figures 4 to 9 can be supported.

[0135] Through the embodiments of this application, it is possible to support the use of TCI state across SBFD carriers and non-SBFD carriers, thereby helping to reduce the signaling overhead used to indicate TCI state. When TCI state is used across SBFD carriers and non-SBFD carriers, the terminal can use appropriate power control parameters to transmit on SBFD carriers or non-SBFD carriers, which can avoid undefined terminal device behavior during power control and avoid additional interference caused therefrom.

[0136] Second aspect of the embodiments

[0137] This application provides a method for determining transmission parameters. This method is applied to a terminal device. The content that is the same as or corresponds to the first aspect of the embodiment will not be repeated. Unlike the first aspect of the embodiment, this application is applicable to the situation where the use of TCI state across SBFD carriers and non-SBFD carriers is prohibited, that is, the use of TCI state across carriers of the same type is only supported.

[0138] Figure 10 is a schematic diagram of a method for determining transmission parameters according to an embodiment of this application. As shown in Figure 10, the method includes:

[0139] 1010, The terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state and the second carrier is configured to use the TCI state of the first carrier; the first carrier and the second carrier are both non-SBFD carriers, or both are SBFD carriers;

[0140] 1020. The terminal device determines the transmission power for the transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0141] That is, if the terminal device is configured with two carriers, and one carrier is configured with the TCI state while the other carrier is configured to use the TCI state configured for the aforementioned one carrier, then the two carriers cannot be carriers of different types, but must be carriers of the same type, such as both being non-SBFD carriers or both being SBFD carriers.

[0142] For example, CC2 can be configured to use the TCI state of CC1 only when both CC1 and CC2 are non-SBFD CCs, and / or, CC2 can be configured to use the TCI state of CC1 only when both CC1 and CC2 are SBFD CCs.

[0143] For example, if CC1 and CC2 are both CCs of the same type, and CC2 is configured to use the TCI state of CC1, if the TCI state of CC1 is not configured with power control parameters, but CC2 is configured with power control parameters, then the transmit power of CC2 is determined according to the power control parameters configured for CC2; if the TCI state of CC1 is configured with power control parameters, but CC2 is not configured with power control parameters, then the transmit power of CC2 is determined according to the power control parameters configured for the TCI state.

[0144] For example, if both CC1 and CC2 are SBFD CCs and CC2 is configured to use CC1's TCI state, then for CC2, the transmit power is determined according to the fifth power control parameter if CC1's TCI state is configured only with the fifth power control parameter. More specifically, for transmissions on non-SBFD symbols, the transmit power is determined according to the fifth power control parameter; for transmissions on SBFD symbols, the transmit power is also determined according to the fifth power control parameter.

[0145] In some embodiments, the terminal device determines a quasi-co-address and / or spatial filter for transmission on the second carrier based on the TCI state configured for the first carrier.

[0146] Figure 11 is another schematic diagram of the method for determining transmission parameters according to an embodiment of this application. As shown in Figure 11, the method includes:

[0147] 1110, The terminal device is configured with a first carrier and a second carrier, one of which is an SBFD carrier and the other is a non-SBFD carrier; the first carrier is configured with a TCI state; the terminal device does not expect the second carrier to be configured to use the TCI state of the first carrier.

[0148] That is, if the terminal device is configured with two different types of carriers, and one of the carriers is configured with the TCI state, then the terminal device does not expect the other carrier to be configured to use the TCI state configured for the aforementioned carrier.

[0149] For example, regardless of whether CC1 is SBFD CC and CC2 is non-SBFD CC, or whether CC1 is non-SBFD CC and CC2 is SBFD CC, the terminal device does not expect CC2 to be configured to use CC1's TCI state. That is, the network device should avoid configuring CC2 to use CC1's TCI state in this situation.

[0150] It is worth noting that Figures 10 and 11 above are only illustrative of embodiments of this application, but this application is not limited thereto. For example, the execution order between various operations can be appropriately adjusted, and other operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description in Figures 10 and 11 above.

[0151] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0152] The embodiments of this application can support the use of TCI state across carriers of the same type, thereby avoiding undefined terminal device behavior when using TCI state across SBFD carriers and non-SBFD carriers, and avoiding additional interference caused therefrom; in addition, it simplifies the design, reduces the impact on existing standards, and avoids introducing additional standardization work to define new terminal device behaviors.

[0153] Third aspect of the embodiments

[0154] This application provides a method for determining transmission parameters. This method is applied to a terminal device, and the content that is the same as or corresponds to the embodiments of the first and second aspects will not be described again.

[0155] Figure 12 is another schematic diagram of the method for determining transmission parameters according to an embodiment of this application. As shown in Figure 12, the method includes:

[0156] 1210, The terminal device is configured with an SBFD carrier, which is configured with the first power control parameter;

[0157] 1220, The terminal equipment determines the transmission power for transmission on the SBFD carrier according to the first power control parameter, wherein the transmission power for transmission on non-SBFD symbols is determined according to the first power control parameter, and the transmission power for transmission on SBFD symbols is determined according to the first power control parameter.

[0158] For example, for an SBFD CC, if the CC is configured with only the first power control parameter and not the second power control parameter, then the transmit power for that CC is determined according to the first power control parameter. More specifically, for transmissions on non-SBFD symbols, the transmit power is determined according to the first power control parameter; for transmissions on SBFD symbols, the transmit power is also determined according to the first power control parameter. For example, if the CC is configured with only the first power control parameter, the TCI state configured for that CC is not configured with a power control parameter.

[0159] It is worth noting that Figure 12 above is only an illustrative description of the embodiments of this application, but this application is not limited thereto. For example, the execution order between various operations can be appropriately adjusted, and other operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description in Figure 12 above.

[0160] This application clarifies how to determine the power control parameter for transmissions on non-SBFD symbols and SBFD symbols when there is only one power control parameter, thereby avoiding undefined terminal device behavior during the power control process and avoiding additional interference caused by it.

[0161] Fourth aspect of the embodiment

[0162] This application provides a configuration method applied to a network device. The fourth aspect of the embodiment can be combined with the first aspect of the embodiment, and the contents that are the same as those in the first aspect of the embodiment will not be repeated.

[0163] Figure 13 is another schematic diagram of the configuration method according to an embodiment of this application. As shown in Figure 13, the method includes:

[0164] 1310. The network device sends configuration information to the terminal device. The configuration information configures a first carrier and a second carrier for the terminal device. The first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier. In the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier.

[0165] According to the above embodiments, the terminal device can determine the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier. Optionally, the terminal device can also determine quasi-co-location and / or spatial filtering for transmission on the second carrier based on the TCI state configured for the first carrier. Regarding the terminal device, please refer to the embodiments of the first aspect above, which will not be repeated here.

[0166] In the above embodiments, configuring the first carrier with a TCI state includes configuring the first carrier with a TCI state set.

[0167] In the above embodiments, the TCI state is either a combined TCI state, a downlink TCI state, or an uplink TCI state.

[0168] In the above embodiments, the first carrier and the second carrier refer to the carrier component (CC) or the bandwidth portion (BWP) of the carrier component.

[0169] It is worth noting that Figure 13 above is only an illustrative description of the embodiments of this application, but this application is not limited thereto. For example, the execution order between various operations can be appropriately adjusted, and other operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description in Figure 13 above.

[0170] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0171] Through the embodiments of this application, it is possible to support the use of TCI state across SBFD carriers and non-SBFD carriers, thereby helping to reduce the signaling overhead used to indicate TCI state. When TCI state is used across SBFD carriers and non-SBFD carriers, the terminal can use appropriate power control parameters to transmit on SBFD carriers or non-SBFD carriers, which can avoid undefined terminal device behavior during power control and avoid additional interference caused therefrom.

[0172] Fifth aspect of the embodiment

[0173] This application provides a configuration method applied to a network device. The fifth aspect embodiment can be combined with the second aspect embodiment, and the contents that are the same as those in the second aspect embodiment will not be repeated.

[0174] Figure 14 is another schematic diagram of the configuration method according to an embodiment of this application. As shown in Figure 14, the method includes:

[0175] 1410, The network device sends configuration information to the terminal device, wherein the configuration information configures a first carrier and a second carrier for the terminal device, wherein the first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier; the first carrier and the second carrier are both non-SBFD carriers, or both are SBFD carriers.

[0176] It is worth noting that Figure 14 above is only an illustrative description of the embodiments of this application, but this application is not limited thereto. For example, the execution order between various operations can be appropriately adjusted, and other operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description in Figure 14 above.

[0177] Figure 15 is another schematic diagram of the configuration method according to an embodiment of this application. As shown in Figure 15, the method includes:

[0178] 1510. The network device sends configuration information to the terminal device, wherein the configuration information configures a first carrier and a second carrier for the terminal device, one of which is an SBFD carrier and the other is a non-SBFD carrier; the first carrier is configured with a TCI state; the terminal device does not expect the second carrier to be configured to use the TCI state of the first carrier. That is, the network device avoids configuring the second carrier to use the TCI state of the first carrier.

[0179] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0180] The embodiments of this application can support the use of TCI state across carriers of the same type, thereby avoiding undefined terminal device behavior when using TCI state across SBFD carriers and non-SBFD carriers, and avoiding additional interference caused therefrom; in addition, it simplifies the design, reduces the impact on existing standards, and avoids introducing additional standardization work to define new terminal device behaviors.

[0181] Implementation of the sixth aspect

[0182] This application provides a configuration method applied to a network device. The sixth aspect embodiment can be combined with the third aspect embodiment, and the contents that are the same as those in the third aspect embodiment will not be repeated.

[0183] Figure 16 is another schematic diagram of the configuration method according to an embodiment of this application. As shown in Figure 16, the method includes:

[0184] 1610, The network device sends configuration information to the terminal device, wherein the configuration information configures the SBFD carrier for the terminal device, and the carrier is configured with the first power control parameter.

[0185] Therefore, the terminal device can determine the transmission power for transmission on the SBFD carrier based on the first power control parameter, wherein the transmission power for transmission on non-SBFD symbols is determined according to the first power control parameter, and the transmission power for transmission on SBFD symbols is determined according to the first power control parameter.

[0186] It is worth noting that Figure 16 above is only an illustrative description of the embodiments of this application, but this application is not limited thereto. For example, the execution order between various operations can be appropriately adjusted, and other operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description in Figure 16 above.

[0187] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0188] This application clarifies how to determine the power control parameter for transmissions on non-SBFD symbols and SBFD symbols when there is only one power control parameter, thereby avoiding undefined terminal device behavior during the power control process and avoiding additional interference caused by it.

[0189] Seventh aspect of the embodiment

[0190] This application provides a device for determining transmission parameters, which is installed in a terminal device. Since the principle by which this device solves the problem is similar to the method in the first aspect embodiment, its specific implementation can refer to the implementation of the method described in the first aspect embodiment; the same or related parts will not be repeated.

[0191] Figure 17 is a schematic diagram of a transmission parameter determination device 1700 according to an embodiment of this application. As shown in Figure 17, the transmission parameter determination device 1700 includes:

[0192] Configuration unit 1701 determines the carrier configuration of a terminal device, which is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state and the second carrier is configured to use the TCI state of the first carrier; in the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier.

[0193] The determining unit 1702 determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0194] In the above embodiments, the first carrier is a non-SBFD carrier, and the second carrier is an SBFD carrier;

[0195] The TCI state configured for the first carrier is configured with the first power control parameter;

[0196] The second carrier was not configured with power control parameters;

[0197] For transmission on the second carrier, the transmission power is determined according to the first power control parameter.

[0198] In the above embodiments, the transmission power is determined according to the first power control parameter, including:

[0199] The transmit power for transmission on non-SBFD symbols is determined according to the first power control parameter, and the transmit power for transmission on SBFD symbols is determined according to the first power control parameter.

[0200] In the above embodiments, the first carrier is a non-SBFD carrier, and the second carrier is an SBFD carrier;

[0201] The TCI state configured for the first carrier has no power control parameters configured.

[0202] The second carrier was configured with a third power control parameter;

[0203] For transmission on the second carrier, the transmission power is determined according to the third power control parameter.

[0204] In the above embodiments, the transmission power is determined according to a third power control parameter, including:

[0205] The transmit power for transmissions on non-SBFD symbols is determined according to the third power control parameter, and the transmit power for transmissions on SBFD symbols is determined according to the third power control parameter.

[0206] In the above embodiments, the first carrier is a non-SBFD carrier, and the second carrier is an SBFD carrier;

[0207] The TCI state configured for the first carrier was not configured with power control parameters;

[0208] The second carrier was configured with a third power control parameter and a fourth power control parameter;

[0209] For transmission on the second carrier, the transmission power is determined based on the third and fourth power control parameters.

[0210] In the above embodiments, the transmission power is determined based on the third power control parameter and the fourth power control parameter, including:

[0211] The transmit power for transmissions on non-SBFD symbols is determined according to the third power control parameter, while the transmit power for transmissions on SBFD symbols is determined according to the fourth power control parameter.

[0212] In the above embodiments, the first carrier is an SBFD carrier, and the second carrier is a non-SBFD carrier;

[0213] The TCI state configured for the first carrier is configured with the fifth power control parameter and the sixth power control parameter;

[0214] The second carrier was not configured with power control parameters;

[0215] For transmission on the second carrier, the transmission power is determined according to the fifth power control parameter.

[0216] In the above embodiments, the first carrier is an SBFD carrier, and the second carrier is a non-SBFD carrier;

[0217] The TCI state configured for the first carrier was configured with the fifth power control parameter;

[0218] The second carrier was not configured with power control parameters;

[0219] For transmission on the second carrier, the transmission power is determined according to the fifth power control parameter.

[0220] In the above embodiments, the first carrier is an SBFD carrier, and the second carrier is a non-SBFD carrier;

[0221] The TCI state configured for the first carrier was not configured with power control parameters;

[0222] The second carrier was configured with the second power control parameter;

[0223] For transmission on the second carrier, the transmission power is determined according to the second power control parameter.

[0224] In the above embodiments, the terminal device determines quasi-co-address and / or spatial filters for transmission on the second carrier based on the TCI state configured for the first carrier.

[0225] In the above embodiments, the power control parameters include at least one of the target received power, path loss compensation factor, and closed-loop power control state index.

[0226] In the above embodiments, configuring the first carrier with a TCI state includes configuring the first carrier with a TCI state set.

[0227] In the above embodiments, the TCI state is either a combined TCI state, a downlink TCI state, or an uplink TCI state.

[0228] In the above embodiments, the first carrier and the second carrier refer to the carrier component (CC) or the bandwidth portion (BWP) of the carrier component.

[0229] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The transmission parameter determination device 1700 may also include other components or modules, and for details regarding these components or modules, please refer to related technologies.

[0230] Furthermore, for simplicity, Figure 17 only illustrates the connection relationships or signal flow between the various components or modules, but those skilled in the art should understand that various related technologies such as bus connections can be used. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not limit this implementation.

[0231] Through the embodiments of this application, it is possible to support the use of TCI state across SBFD carriers and non-SBFD carriers, thereby helping to reduce the signaling overhead used to indicate TCI state. When TCI state is used across SBFD carriers and non-SBFD carriers, the terminal can use appropriate power control parameters to transmit on SBFD carriers or non-SBFD carriers, which can avoid undefined terminal device behavior during power control and avoid additional interference caused therefrom.

[0232] Eighth aspect of the embodiment

[0233] This application provides a device for determining transmission parameters, which is installed in a terminal device. Since the principle by which this device solves the problem is similar to the method in the second aspect of the embodiment, its specific implementation can refer to the implementation of the method described in the second aspect of the embodiment; the same or related parts will not be repeated.

[0234] Figure 18 is a schematic diagram of a data transmission apparatus according to an embodiment of this application. As shown in Figure 18, the data transmission parameter determination device 1800 includes:

[0235] Configuration unit 1801 determines the carrier configuration of a terminal device, which is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state and the second carrier is configured to use the TCI state of the first carrier; the first carrier and the second carrier are both non-SBFD carriers, or both are SBFD carriers.

[0236] The determining unit 1802 determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0237] In the above embodiments, the terminal device determines quasi-co-address and / or spatial filters for transmission on the second carrier based on the TCI state configured for the first carrier.

[0238] Figure 19 is another schematic diagram of a transmission parameter determination device according to an embodiment of this application. As shown in Figure 19, the transmission parameter determination device 1900 includes:

[0239] Configuration unit 1901 determines the carrier configuration of a terminal device, which is configured with a first carrier and a second carrier, one of which is an SBFD carrier and the other is a non-SBFD carrier; the first carrier is configured with a TCI state; the terminal device does not expect the second carrier to be configured to use the TCI state of the first carrier.

[0240] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The transmission parameter determination devices 1800 and 1900 may also include other components or modules, and for details regarding these components or modules, please refer to related technologies.

[0241] Furthermore, for simplicity, Figures 18 and 19 only illustrate the connection relationships or signal flows between the various components or modules, but those skilled in the art should understand that various related technologies such as bus connections can be used. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not limit this implementation.

[0242] The embodiments of this application can support the use of TCI state across carriers of the same type, thereby avoiding undefined terminal device behavior when using TCI state across SBFD carriers and non-SBFD carriers, and avoiding additional interference caused therefrom; in addition, it simplifies the design, reduces the impact on existing standards, and avoids introducing additional standardization work to define new terminal device behaviors.

[0243] Ninth aspect of the embodiment

[0244] This application provides a device for determining transmission parameters, which is installed in a terminal device. Since the principle by which this device solves the problem is similar to the method in the third aspect embodiment, its specific implementation can refer to the implementation of the method described in the third aspect embodiment; the same or related parts will not be repeated.

[0245] Figure 20 is a schematic diagram of a transmission parameter determination device according to an embodiment of this application. As shown in Figure 20, the transmission parameter determination device 2000 includes:

[0246] Configuration unit 2001 determines the carrier configuration of the terminal device, which is configured with an SBFD carrier and the carrier is configured with a first power control parameter.

[0247] The determining unit 2002 determines the transmission power for transmission on the SBFD carrier based on the first power control parameter, wherein the transmission power for transmission on non-SBFD symbols is determined based on the first power control parameter, and the transmission power for transmission on SBFD symbols is determined based on the first power control parameter.

[0248] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The transmission parameter determination device 2000 may also include other components or modules, and for details regarding these components or modules, please refer to related technologies.

[0249] Furthermore, for simplicity, Figure 20 only illustrates the connection relationships or signal flow between the various components or modules, but those skilled in the art should understand that various related technologies such as bus connections can be used. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not limit this implementation.

[0250] This application clarifies how to determine the power control parameter for transmissions on non-SBFD symbols and SBFD symbols when there is only one power control parameter, thereby avoiding undefined terminal device behavior during the power control process and avoiding additional interference caused by it.

[0251] Tenth aspect embodiment

[0252] This application provides a configuration device disposed in a network device. Since the principle by which this device solves the problem is similar to the method in the fourth aspect embodiment, its specific implementation can refer to the implementation of the method described in the fourth aspect embodiment; the same or related parts will not be repeated.

[0253] Figure 21 is a schematic diagram of a configuration device according to an embodiment of this application. As shown in Figure 21, the configuration device 2100 includes:

[0254] The transmitting unit 2101 transmits configuration information to the terminal device, wherein the configuration information configures a first carrier and a second carrier for the terminal device, wherein the first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier; in the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier.

[0255] In the above embodiments, configuring the first carrier with a TCI state includes configuring the first carrier with a TCI state set.

[0256] In the above embodiments, the TCI state is either a combined TCI state, a downlink TCI state, or an uplink TCI state.

[0257] In the above embodiments, the first carrier and the second carrier refer to the carrier component (CC) or the bandwidth portion (BWP) of the carrier component.

[0258] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The transmission parameter determination device 1900 may also include other components or modules, and for details regarding these components or modules, please refer to related technologies.

[0259] Furthermore, for simplicity, Figure 21 only illustrates the connection relationships or signal flow between the various components or modules, but those skilled in the art should understand that various related technologies such as bus connections can be used. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not limit this implementation.

[0260] Through the embodiments of this application, it is possible to support the use of TCI state across SBFD carriers and non-SBFD carriers, thereby helping to reduce the signaling overhead used to indicate TCI state. When TCI state is used across SBFD carriers and non-SBFD carriers, the terminal can use appropriate power control parameters to transmit on SBFD carriers or non-SBFD carriers, which can avoid undefined terminal device behavior during power control and avoid additional interference caused therefrom.

[0261] Eleventh aspect of the embodiment

[0262] This application provides a configuration device disposed in a network device. Since the principle by which this device solves the problem is similar to the method in the embodiments of the fifth and sixth aspects, its specific implementation can refer to the implementation of the method described in the embodiments of the fifth and sixth aspects, and the same or related contents will not be repeated.

[0263] Figure 22 is a schematic diagram of a configuration device according to an embodiment of this application. As shown in Figure 20, the configuration device 2200 includes:

[0264] The sending unit 2201 sends configuration information to the terminal device.

[0265] In some embodiments, the configuration information configures a first carrier and a second carrier for the terminal device. The first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier. Both the first and second carriers are non-SBFD carriers, or both are SBFD carriers. This allows for the use of TCI states across carriers of the same type, thereby avoiding undefined terminal device behavior when using TCI states across SBFD and non-SBFD carriers, and avoiding additional interference. Furthermore, it simplifies the design, reduces the impact on existing standards, and avoids introducing additional standardization work to define new terminal device behaviors.

[0266] In other embodiments, the configuration information configures a first carrier and a second carrier for the terminal device, one of which is an SBFD carrier and the other is a non-SBFD carrier; the first carrier is configured with a TCI state; the terminal device does not expect the second carrier to be configured to use the TCI state of the first carrier. This allows for the use of TCI state across carriers of the same type, thereby avoiding undefined terminal device behavior when using TCI state across SBFD and non-SBFD carriers, and avoiding the resulting additional interference; furthermore, it simplifies the design, reduces the impact on existing standards, and avoids introducing additional standardization work to define new terminal device behaviors.

[0267] In some other embodiments, the configuration information configures an SBFD carrier for the terminal device, and the carrier is configured with a first power control parameter. Therefore, even with only the first power control parameter configured, power control parameters can be determined separately for transmissions on non-SBFD symbols and SBFD symbols. This clarifies how to determine power control parameters separately for transmissions on non-SBFD symbols and SBFD symbols when only one power control parameter is available, thereby avoiding undefined terminal device behavior during power control and preventing additional interference caused by it.

[0268] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The configuration device 2200 may also include other components or modules, and for details regarding these components or modules, please refer to related technologies.

[0269] Furthermore, for simplicity, Figure 22 only illustrates the connection relationships or signal flow between the various components or modules, but those skilled in the art should understand that various related technologies such as bus connections can be used. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not limit this implementation.

[0270] The embodiments of this application can support the use of TCI state across carriers of the same type, thereby avoiding undefined terminal device behavior when using TCI state across SBFD carriers and non-SBFD carriers, and avoiding additional interference caused therefrom; in addition, it simplifies the design, reduces the impact on existing standards, and avoids introducing additional standardization work to define new terminal device behaviors.

[0271] Twelfth aspect of the embodiment

[0272] This application also provides a communication system, which includes a terminal device and a network device. Referring to FIG1, the contents that are the same as those in the embodiments of the first to eleventh aspects will not be repeated.

[0273] In some embodiments, the terminal device is configured to:

[0274] The terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state and the second carrier is configured to use the TCI state of the first carrier; of the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier;

[0275] The terminal device determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0276] In some embodiments, the terminal device is configured to:

[0277] The terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state and the second carrier is configured to use the TCI state of the first carrier; both the first carrier and the second carrier are non-SBFD carriers, or both are SBFD carriers;

[0278] The terminal device determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0279] In some embodiments, the terminal device is configured to:

[0280] The terminal device is configured with a first carrier and a second carrier, one of which is an SBFD carrier and the other is a non-SBFD carrier; the first carrier is configured with a TCI state; the terminal device does not expect the second carrier to be configured to use the TCI state of the first carrier.

[0281] In some embodiments, the terminal device is configured to:

[0282] The terminal device is configured with an SBFD carrier, and the SBFD carrier is configured with a first power control parameter;

[0283] The terminal device determines the transmission power for the transmission on the SBFD carrier according to the first power control parameter, wherein the transmission power for the transmission on non-SBFD symbols is determined according to the first power control parameter, and the transmission power for the transmission on SBFD symbols is determined according to the first power control parameter.

[0284] This application also provides a terminal device, which can be any of the aforementioned devices, but this application is not limited to these and can also be other devices.

[0285] Figure 23 is a schematic diagram of a terminal device according to an embodiment of this application. As shown in Figure 23, the terminal device 2300 may include a processor 2310 and a memory 2320; the memory 2320 stores data and programs and is coupled to the processor 2310. It is worth noting that this figure is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunications functions or other functions.

[0286] As shown in Figure 23, the terminal device 2300 may further include: a communication module 2330, an input unit 2340, a display 2350, and a power supply 2360. The functions of these components are similar to those in the prior art and will not be described in detail here. It is worth noting that the terminal device 2300 does not necessarily include all the components shown in Figure 23; these components are not essential. Furthermore, the terminal device 2300 may also include components not shown in Figure 23, which can be referred to in the prior art.

[0287] For example, processor 2310 and communication module 2330 can be configured to execute programs to implement the methods described in the embodiments of the first to third aspects.

[0288] This application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to perform the methods described in the embodiments of the first to third aspects.

[0289] This application also provides a storage medium storing a computer program, wherein the computer program causes a terminal device to perform the methods described in the first to third aspects of the embodiments.

[0290] The apparatus and methods described above in this application can be implemented in hardware or in combination with software. This application relates to a computer-readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to implement the various methods or steps described above. This application also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, etc.

[0291] The methods / apparatus described in conjunction with the embodiments of this application can be directly embodied in hardware, software modules executed by a processor, or a combination of both. For example, one or more and / or combinations of one or more functional block diagrams shown in the figures can correspond to various software modules in a computer program flow, or to various hardware modules. These software modules can correspond to the various steps shown in the figures, respectively. These hardware modules can be implemented, for example, using a field-programmable gate array (FPGA) to embed these software modules.

[0292] The software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor, enabling the processor to read information from and write information to the storage medium; or the storage medium can be an integral part of the processor. The processor and storage medium can reside in an ASIC. The software module can be stored in the memory of a mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a high-capacity MEGA-SIM card or a high-capacity flash memory device, the software module can be stored in the MEGA-SIM card or the high-capacity flash memory device.

[0293] One or more and / or one or more combinations of functional blocks described in the accompanying drawings can be implemented as a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more and / or one or more combinations of functional blocks described in the accompanying drawings can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0294] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.

[0295] Regarding the implementation methods including the above embodiments, the following notes are also disclosed:

[0296] 1. A method for determining transmission parameters, applied to a terminal device, wherein the method includes:

[0297] The terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier; of the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier;

[0298] The terminal device determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0299] 2. A method for determining transmission parameters, applied to a network device, wherein the method includes:

[0300] The network device sends configuration information to the terminal device. The configuration information configures a first carrier and a second carrier for the terminal device. The first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier. Among the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier.

[0301] 3. A method for determining transmission parameters, applied to a terminal device, wherein the method includes:

[0302] The terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier; both the first carrier and the second carrier are non-SBFD carriers, or both are SBFD carriers.

[0303] The terminal device determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

[0304] 4. A method for determining transmission parameters, applied to a network device, wherein the method includes:

[0305] The network device sends configuration information to the terminal device, wherein the configuration information configures a first carrier and a second carrier for the terminal device, wherein the first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier; the first carrier and the second carrier are both non-SBFD carriers, or both are SBFD carriers.

[0306] 5. A method for determining transmission parameters, applied to a terminal device, wherein the method includes:

[0307] The terminal device is configured with a first carrier and a second carrier, one of which is an SBFD carrier and the other is a non-SBFD carrier; the first carrier is configured with a TCI state; the terminal device does not expect the second carrier to be configured to use the TCI state of the first carrier.

[0308] 6. A method for determining transmission parameters, applied to a network device, wherein the method comprises:

[0309] The network device sends configuration information to the terminal device, wherein a first carrier and a second carrier are configured for the terminal device, one of the first carrier and the second carrier is an SBFD carrier and the other is a non-SBFD carrier; the first carrier is configured with a TCI state; the terminal device does not expect the second carrier to be configured to use the TCI state of the first carrier.

[0310] 7. A method for determining transmission parameters, applied to a terminal device, wherein the method includes:

[0311] The terminal device is configured with an SBFD carrier, and the SBFD carrier is configured with a first power control parameter;

[0312] The terminal device determines the transmission power for the transmission on the SBFD carrier according to the first power control parameter, wherein the transmission power for the transmission on non-SBFD symbols is determined according to the first power control parameter, and the transmission power for the transmission on SBFD symbols is determined according to the first power control parameter.

[0313] 8. A method for determining transmission parameters, applied to a network device, wherein the method includes:

[0314] The network device sends configuration information to the terminal device, wherein the configuration information configures an SBFD carrier for the terminal device, and the carrier is configured with a first power control parameter.

[0315] 9. A communication system comprising a terminal device and a network device, wherein the terminal device includes a memory and a processor, the memory storing a computer program, and the processor being configured to execute the computer program to implement the method as described in any one of Appendices 1 to 8.

Claims

1. A device for determining transmission parameters, configured in a terminal device, wherein, The device includes: A configuration unit determines the carrier configuration of the terminal device, wherein the terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier; in the first carrier and the second carrier, one is an SBFD carrier and the other is a non-SBFD carrier; The determining unit determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

2. The apparatus according to claim 1, wherein, The first carrier is a non-SBFD carrier, and the second carrier is an SBFD carrier; The TCI state configured for the first carrier is configured with the first power control parameter; The second carrier was not configured with power control parameters; For transmission on the second carrier, the transmission power is determined according to the first power control parameter.

3. The apparatus according to claim 1, wherein, The transmission power is determined according to the first power control parameter, including: The transmit power for transmission on non-SBFD symbols is determined according to the first power control parameter, and the transmit power for transmission on SBFD symbols is determined according to the first power control parameter.

4. The apparatus according to claim 1, wherein, The first carrier is a non-SBFD carrier, and the second carrier is an SBFD carrier; The TCI state configured for the first carrier has no power control parameters configured. The second carrier was configured with a third power control parameter; For transmission on the second carrier, the transmission power is determined according to the third power control parameter.

5. The apparatus according to claim 1, wherein, The transmission power is determined according to the third power control parameter, including: The transmit power for transmission on non-SBFD symbols is determined according to the third power control parameter, and the transmit power for transmission on SBFD symbols is determined according to the third power control parameter.

6. The apparatus according to claim 1, wherein, The first carrier is a non-SBFD carrier, and the second carrier is an SBFD carrier; The TCI state configured for the first carrier has no power control parameters configured. The second carrier is configured with a third power control parameter and a fourth power control parameter; For transmission on the second carrier, the transmission power is determined according to the third power control parameter and the fourth power control parameter.

7. The apparatus according to claim 1, wherein, The transmission power is determined based on the third power control parameter and the fourth power control parameter, including: The transmit power for transmissions on non-SBFD symbols is determined according to the third power control parameter, and the transmit power for transmissions on SBFD symbols is determined according to the fourth power control parameter.

8. The apparatus according to claim 1, wherein, The first carrier is an SBFD carrier, and the second carrier is a non-SBFD carrier; The TCI state configured for the first carrier is configured with a fifth power control parameter and a sixth power control parameter; The second carrier was not configured with power control parameters; For transmission on the second carrier, the transmission power is determined according to the fifth power control parameter.

9. The apparatus according to claim 1, wherein, The first carrier is an SBFD carrier, and the second carrier is a non-SBFD carrier; The TCI state configured for the first carrier is configured with a fifth power control parameter; The second carrier was not configured with power control parameters; For transmission on the second carrier, the transmission power is determined according to the fifth power control parameter.

10. The apparatus according to claim 1, wherein, The first carrier is an SBFD carrier, and the second carrier is a non-SBFD carrier; The TCI state configured for the first carrier has no power control parameters configured. The second carrier is configured with a second power control parameter; For transmission on the second carrier, the transmission power is determined according to the second power control parameter.

11. The apparatus according to claim 1, wherein, The terminal device determines a quasi-co-address and / or spatial filter for transmission on the second carrier based on the TCI state configured for the first carrier.

12. The apparatus according to claim 1, wherein, The power control parameters include at least one of the following: target received power, path loss compensation factor, and closed-loop power control state index.

13. The apparatus according to claim 1, wherein, The first carrier is configured with a TCI state including: the first carrier is configured with a TCI state set.

14. The apparatus according to claim 1, wherein, The TCI state can be a combined TCI state, a downlink TCI state, or an uplink TCI state.

15. The apparatus according to claim 1, wherein, The first carrier and the second carrier refer to the carrier component (CC) or the bandwidth portion (BWP) of the carrier component.

16. A device for determining transmission parameters, configured in a terminal device, wherein, The device includes: A configuration unit determines the carrier configuration of the terminal device, wherein the terminal device is configured with a first carrier and a second carrier, wherein the first carrier is configured with a TCI state, and the second carrier is configured to use the TCI state of the first carrier; the first carrier and the second carrier are both non-SBFD carriers, or both are SBFD carriers; The determining unit determines the transmission power for transmission on the second carrier based on the TCI state configured for the first carrier or the power control parameters configured for the second carrier.

17. The apparatus according to claim 16, wherein, The terminal device determines a quasi-co-address and / or spatial filter for transmission on the second carrier based on the TCI state configured for the first carrier.

18. A device for determining transmission parameters, configured in a terminal device, wherein, The device includes: A configuration unit determines the carrier configuration of the terminal device, wherein the terminal device is configured with an SBFD carrier and the carrier is configured with a first power control parameter; The determining unit determines the transmission power for transmission on the SBFD carrier based on the first power control parameter, wherein the transmission power for transmission on non-SBFD symbols is determined based on the first power control parameter, and the transmission power for transmission on SBFD symbols is determined based on the first power control parameter.

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