Method, apparatus, and communication device for determining beam application time

Abstract

The present application discloses a method, apparatus, and communication device for determining beam application time, belonging to the field of communication technologies. The method for determining beam application time in the embodiments of the present application includes: The communication device determines a timing start symbol corresponding to the reference CC according to a first symbol, where the first symbol is the last symbol occupied by the ACK of the beam indication information; The communication device determines a first slot corresponding to the target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC belonging to the first TAG in the target CC group; The communication device determines the BAT of the CC belonging to each TAG in the target CC group according to the first slot.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a method, apparatus, and communication device for determining a beam application time (BAT). Background Art

[0002] The network-side device can send beam indication information to the terminal through a medium access control control element (MAC CE) or downlink control information (DCI), so that the terminal and / or the network-side device can determine the beam application time (BAT) of the beam indicated by the beam indication information.

[0003] Generally, the terminal can select the CC with the smallest subcarrier spacing (SCS) from the carrier component (CC) (hereinafter simply referred to as CC0) where the response message (Acknowledgement, ACK) for sending the above beam indication information is located, or the CC corresponding to the beam indication information as the reference CC, and then use the first slot after Y symbols starting from the timing start point on the time domain resource corresponding to the reference CC as the BAT for all CCs corresponding to the beam indication information.

[0004] However, in a carrier aggregation (CA) scenario, the CCs corresponding to the beam indication information may belong to different timing advance groups (TAGs), so the time slots (slots) and symbols (symbols) between these CCs may not be aligned. Thus, the BAT determined in the above manner may cause the BATs of all or some of these CCs to be in the middle of the slot rather than the first symbol of the slot, resulting in the misalignment of the application times of the CCs corresponding to the beam indication information, and thus incorrect data transmission cannot be performed. Summary of the Invention

[0005] Embodiments of this application provide a method, apparatus, and communication device for determining a beam application time, which can solve the problem that the application times of CCs in a CA scenario cannot be aligned, resulting in incorrect data transmission.

[0006] In a first aspect, a method for determining beam application time is provided. The method includes: a communication device determines a timing start symbol corresponding to a reference CC according to a first symbol, where the first symbol is the last symbol occupied by an ACK of beam indication information; the communication device determines a first slot corresponding to a target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC belonging to the first TAG in the target CC group; the communication device determines the BAT of the CC belonging to each TAG in the target CC group according to the first slot.

[0007] Through the above solution, since the CCs belonging to one TAG have a certain correlation relationship in the time domain (such as the same SCS or SCS in a multiple relationship), in the case where the CCs in the target CC group belong to different TAGs or the TAGs to which the CCs in the target CC group belong are different from the TAG to which the CC where the ACK is located belongs, by determining the timing start symbol corresponding to the reference CC, and determining the first slot corresponding to the target CC, and according to the first slot, determining the BAT of the CC belonging to each TAG in the target CC group, the beam activation times of the CCs belonging to the same TAG in the target CC group can be made consistent, that is, the beams of the CCs belonging to the same TAG can be aligned, so that data transmission can be correctly performed.

[0008] In a second aspect, a method for determining beam application time is provided, including: a communication device determines a timing start symbol corresponding to a reference BWP according to a seventh symbol, where the seventh symbol is the last symbol occupied by an ACK of beam indication information; the communication device determines a fourth slot corresponding to a target BWP according to the timing start symbol, where the target BWP is the BWP where the ACK is located or the first BWP belonging to the third TAG among the CCs belonging to the target BWP group; the communication device determines the BAT of the BWP of the CC belonging to each TAG in the target BWP group according to the fourth slot.

[0009] Through the above solution, since the BWPs of the CCs belonging to one TAG have a certain correlation relationship in the time domain (such as the same SCS or SCS in a multiple relationship), in the case where the CCs to which the BWPs in the target BWP group belong belong to different TAGs or the TAGs to which the CCs to which the BWPs in the target BWP group belong are different from the TAG to which the CC where the ACK is located belongs, by determining the timing start symbol corresponding to the reference BWP, and determining the first slot corresponding to the target BWP, and according to the first slot, determining the BAT of the BWP of the CC belonging to each TAG in the target BWP group, the beam activation times of the BWPs of the CCs belonging to the same TAG in the target BWP group can be made consistent, that is, the beams of the BWPs of the CCs belonging to the same TAG can be aligned, so that data transmission can be correctly performed.

[0010] In a third aspect, a beam application time determination device is provided, including: a determination module, configured to determine a timing start symbol corresponding to a reference CC according to a first symbol, where the first symbol is the last symbol occupied by an ACK of beam indication information; and determine a first slot corresponding to a target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC belonging to a first TAG in a target CC group; and determine the BAT of the CC belonging to each TAG in the target CC group according to the first slot.

[0011] In a fourth aspect, a beam application time determination device is provided, including: a determination module, configured to determine a timing start symbol corresponding to a reference BWP according to a seventh symbol, where the seventh symbol is the last symbol occupied by an ACK of beam indication information; and determine a fourth slot corresponding to a target BWP according to the timing start symbol, where the target BWP is the BWP where the ACK is located or the first BWP belonging to a third TAG among the CCs belonging to a target BWP group; and determine the beam application time BAT of the BWP of the CC belonging to each TAG in the target BWP group according to the fourth slot.

[0012] In a fifth aspect, a communication device (including a terminal and / or a network-side device) is provided. The terminal includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the method according to the first aspect are implemented.

[0013] In a sixth aspect, a communication device is provided, including a processor and a communication interface. The processor is configured to determine a timing start symbol corresponding to a reference CC according to a first symbol, where the first symbol is the last symbol occupied by an ACK of beam indication information; and determine a first slot corresponding to a target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC belonging to a first TAG in a target CC group; and determine the BAT of the CC belonging to each TAG in the target CC group according to the first slot. Alternatively, the processor is configured to determine a timing start symbol corresponding to a reference BWP according to a seventh symbol, where the seventh symbol is the last symbol occupied by an ACK of beam indication information; and determine a fourth slot corresponding to a target BWP according to the timing start symbol, where the target BWP is the BWP where the ACK is located or the first BWP belonging to a third TAG among the CCs belonging to a target BWP group; and determine the beam application time BAT of the BWP of the CC belonging to each TAG in the target BWP group according to the fourth slot.

[0014] In a seventh aspect, a readable storage medium is provided, where a program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented, or the steps of the method according to the second aspect are implemented.

[0015] In an eighth aspect, a chip is provided, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement the method described in the first aspect or the method described in the second aspect.

[0016] In a ninth aspect, a computer program / program product is provided. The computer program / program product is stored in a non-volatile storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or the steps of the method described in the second aspect. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application;

[0018] Figure 2 is one of the schematic flowcharts of the beam application time determination method provided by an embodiment of the present application;

[0019] Figure 3 is one of the application schematic diagrams of the beam application time determination method provided by an embodiment of the present application;

[0020] Figure 4 is the second of the application schematic diagrams of the beam application time determination method provided by an embodiment of the present application;

[0021] Figure 5 is the third of the application schematic diagrams of the beam application time determination method provided by an embodiment of the present application;

[0022] Figure 6 is the fourth of the application schematic diagrams of the beam application time determination method provided by an embodiment of the present application;

[0023] Figure 7 is the fifth of the application schematic diagrams of the beam application time determination method provided by an embodiment of the present application;

[0024] Figure 8 is the sixth of the application schematic diagrams of the beam application time determination method provided by an embodiment of the present application;

[0025] Figure 9 is the seventh of the application schematic diagrams of the beam application time determination method provided by an embodiment of the present application;

[0026] Figure 10 is the eighth of the application schematic diagrams of the beam application time determination method provided by an embodiment of the present application;

[0027] Figure 11 is the ninth of the application schematic diagrams of the beam application time determination method provided by an embodiment of the present application;

[0028] Figure 12 It is the tenth application schematic diagram of the beam application time determination method provided by the embodiment of the present application;

[0029] Figure 13 It is the eleventh application schematic diagram of the beam application time determination method provided by the embodiment of the present application;

[0030] Figure 14 It is the twelfth application schematic diagram of the beam application time determination method provided by the embodiment of the present application;

[0031] Figure 15 It is the thirteenth application schematic diagram of the beam application time determination method provided by the embodiment of the present application;

[0032] Figure 16 It is the fourteenth application schematic diagram of the beam application time determination method provided by the embodiment of the present application;

[0033] Figure 17 It is the fifteenth application schematic diagram of the beam application time determination method provided by the embodiment of the present application;

[0034] Figure 18 It is the sixteenth application schematic diagram of the beam application time determination method provided by the embodiment of the present application;

[0035] Figure 19 It is the second flow schematic diagram of the beam application time determination method provided by the embodiment of the present application;

[0036] Figure 20 It is the structure schematic diagram of the beam application time determination device provided by the embodiment of the present application;

[0037] Figure 21 It is the structure schematic diagram of the communication device provided by the embodiment of the present application;

[0038] Figure 22 It is the hardware schematic diagram of the terminal provided by the embodiment of the present application;

[0039] Figure 23 It is the hardware schematic diagram of the network side device provided by the embodiment of the present application. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application belong to the scope protected by the present application.

[0041] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means that the related objects before and after are in an "or" relationship.

[0042] It should be noted that the technology described in the embodiments of this application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and uses the NR terms in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the 6-th Generation (6G) communication system.

[0043] Figure 1The block diagram of a wireless communication system to which the embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.). The wearable device includes: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, game consoles, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can be a base station or a core network. Among them, the base station can be called a Node B, an evolved Node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (TRP), or some other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0044] Next, with reference to the accompanying drawings, the determination of the beam application time provided by the embodiments of the present application will be described in detail through some embodiments and their application scenarios.

[0045] As Figure 2 shown, the embodiments of the present application provide a method for determining the beam application time. The beam time determination method includes the following steps 201-step 203.

[0046] Step 201: The communication device determines the timing start symbol corresponding to the reference CC according to the first symbol.

[0047] Among them, the above-mentioned first symbol may be the last symbol occupied by the ACK of the beam indication information.

[0048] It can be understood that the above-mentioned determination of the timing start symbol corresponding to the reference CC may be to determine the timing start symbol on the time domain resource of the reference CC.

[0049] It should be noted that the above-mentioned communication device may be a terminal or a network-side device. Specifically, it can be determined according to actual usage requirements, and the embodiments of the present application do not make limitations.

[0050] In the embodiments of the present application, the above-mentioned beam indication information may be sent by the network-side device to the terminal. For example, it is common beam indication information, and this common beam is used for multiple downlink channels and / or multiple uplink channels, which may include channels dedicated to user equipment (UE) and may also include channels not dedicated to UE. It can be understood that the above-mentioned ACK is the ACK of the beam indication information sent by the terminal to the network-side device.

[0051] Step 202: The communication device determines the first slot corresponding to the target CC according to the timing start symbol.

[0052] Among them, the above-mentioned target CC may be the CC where the ACK is located or the first CC belonging to the first TAG in the target CC group.

[0053] It can be understood that the CC where the above-mentioned ACK is located is the CC carrying the ACK of the beam indication information. The above-mentioned determination of the first slot corresponding to the target CC may be to determine the first slot on the time domain resource of the target CC.

[0054] Step 203: The communication device determines the BAT of the CC belonging to each TAG in the target CC group according to the first slot.

[0055] In the embodiments of the present application, after the terminal receives the beam indication information, the terminal may send an ACK of the beam indication information to the network-side device. Then, the communication device (terminal and / or network-side device) may determine the above-mentioned timing start symbol on the time domain resource of the reference CC according to the above-mentioned first symbol (the last symbol occupied by the ACK of the beam indication information), and determine the first slot on the time domain resource corresponding to the above-mentioned target CC according to this timing start symbol, and then determine the BAT of the CC belonging to each TAG in the target CC group according to this first slot, that is, the communication device may determine the BAT of the CC of each TAG in the target CC group according to this first slot.

[0056] It should be noted that in the embodiments of the present application, the CC in the above target CC group may be the CC to which the above beam indication information is applied. Among them, the beam indication information may be common beam indication information.

[0057] Optionally, in the embodiments of the present application, the CC in the above target CC group and the CC where the ACK is located belong to at least two TAGs.

[0058] Optionally, in the embodiments of the present application, the CC in the target CC group may belong to at least one TAG. Among them, when the CC in the target CC group belongs to one TAG, the TAG to which the CC where the ACK is located belongs is different from the TAG to which the CC in the target CC group belongs; when the CC in the target CC group belongs to multiple TAGs, the TAG to which the CC where the ACK is located belongs may be the same as or different from the TAG to which the CC in the target CC group belongs, and it can be specifically determined according to actual usage requirements. The present application does not make any limitations in this regard.

[0059] It should be noted that when the present application mentions that "multiple CCs belong to one TAG", it can also be understood that the cells corresponding to the multiple CCs belong to the same TAG.

[0060] Optionally, in the embodiments of the present application, when the CC in the target CC group belongs to at least two TAGs, the at least two TAGs correspond to the same transmission configuration indicator (TCI) state pool, or the at least two TAGs correspond to different TCI state pools. That is, when the network side device configures the TCI state pool for the target CC group, regardless of the number of TAGs to which the CC in the target CC group belongs, a TCI state pool can be configured for the CC in the target CC group, or according to the TAGs to which the CC in the target CC group belongs, a TCI state pool can be configured for the CCs belonging to the same TAG, and another TCI state pool can be configured for the CCs belonging to another TAG.

[0061] In the embodiments of the present application, the network side device may indicate the TCI state corresponding to the CC in the target CC group through downlink information, such as downlink control information (DCI), and then determine the downlink common beam information and / or uplink common beam information of the CC in the target CC group according to the TCI state.

[0062] Optionally, in the embodiments of the present application, the above reference CC (the CC used to determine the timing start symbol) may be the CC where the above ACK is located, the above first CC, or the second CC in the target CC group that belongs to the second TAG.

[0063] It can be understood that when the reference CC is the second CC above, the CCs in the above target CC group can belong to multiple TAGs.

[0064] In the embodiment of the present application, when the above reference CCs are different, the determined timing start symbols are different, and the target CCs are also different, so the determined first slot is also different. Thus, the BATs of the CCs in the target CC group belonging to each TAG are also different. Hereinafter, the beam application time determination method provided by the embodiment of the present application will be exemplarily described in three cases of the reference CC.

[0065] The first case: The reference CC is the first CC, and the first CC is the CC with the smallest SCS in the first TAG.

[0066] Based on the above first case, in one implementation, the above timing start symbol can be a symbol determined according to the first symbol. It can be understood that the above timing start symbol can be the symbol corresponding to the mapping position of the first symbol on the time domain resource corresponding to the first CC.

[0067] In another implementation, the timing start symbol can be a symbol determined according to the first symbol and the first timing advance (TA). Wherein, the above first TA may include at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

[0068] It can be understood that the above timing start symbol can be the symbol corresponding to the mapping position of the first symbol on the time domain resource corresponding to the first CC minus and / or plus the first TA. Or rather, the above timing start symbol can be the symbol corresponding to the mapping position of the first symbol on the time domain resource corresponding to the first CC moving backward and / or forward by the first TA. Wherein, moving backward means the number of symbols before the mapping position of the first symbol on the time domain resource corresponding to the first CC, and moving forward means the number of symbols after / next to the mapping position of the first symbol on the time domain resource corresponding to the first CC. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n, it is symbol (n - m), and moving forward k symbols from symbol n, it is symbol (n + k).

[0069] It can also be understood that if the time of the first symbol is t1, and the time difference between the TA corresponding to the TAG to which the CC where the ACK is located belongs and the TA corresponding to the first TAG is t2, if the TA corresponding to the TAG to which the CC where the ACK is located belongs is greater than the TA corresponding to the first TAG, the time of the timing start symbol is (t1 + t2); if the TA corresponding to the TAG to which the CC where the ACK is located belongs is less than the TA corresponding to the first TAG, the time of the timing start symbol is (t1 - t2).

[0070] Exemplarily, assume that the TA corresponding to the above-mentioned first TAG is 3 symbols, and the TA corresponding to the TAG to which the CC where the ACK is located belongs is 5 symbols. Then the above-mentioned timing start symbol can be the symbol corresponding to the mapping position of the first symbol on the time domain resource corresponding to the first CC plus 5 symbols and then minus 3 symbols. That is to say, the timing start symbol determined according to the TA corresponding to the first TAG and the TA corresponding to the TAG to which the CC where the ACK is located belongs lags behind the symbol on the time domain resource corresponding to the CC where the ACK is located by 2 symbols in time. It is necessary to move the mapping position of the first symbol on the time domain resource corresponding to the first CC forward by 2 symbols. If the mapping position is the symbol n on the time domain resource corresponding to the first CC, the timing start symbol is the symbol (n + 2).

[0071] In addition, the TAG to which the CC where the ACK is located belongs and the first TAG can be different TAGs.

[0072] Optionally, in the above first case, when the target CC is the above-mentioned first CC, the first slot can be the first slot after Y symbols after the timing start symbol on the time domain resource corresponding to the first CC.

[0073] It should be noted that the value of the above-mentioned Y can be configured by the network-side device. Among them, each Y configured by the network can correspond to at least one of a group of CC, BWP, and SCS.

[0074] Optionally, based on the above first case, in the target CC group, the BAT of the CC belonging to the first TAG is the first slot.

[0075] It can be understood that for the above first case, the communication device can determine the BAT of all CCs in the first TAG by determining the BAT of the CC with the smallest SCS in the first TAG.

[0076] The following will exemplarily describe the above first case (the reference CC and the target CC are both the first CC) with reference to the accompanying drawings.

[0077] A possible situation: The CCs in the target CC group belong to the same TAG.

[0078] Assume that the CC where ACK is located (hereinafter referred to as CC0) belongs to TAG1, and all CCs in the target CC group belong to TAG2. If among the CCs belonging to TAG2, the SCS of CC1 (i.e., the first CC mentioned above) is the smallest, then CC1 belonging to TAG2 is used as the reference CC.

[0079] Example 1: As Figure 3 shown, according to at least one of the TAs corresponding to TAG1 to which CC0 belongs and the TA corresponding to TAG2, map T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) to the first time point T1 (i.e., the timing start symbol) on the time domain resource corresponding to CC1, and then according to the SCS of CC1, count Y symbols starting from T1, and use the first slot after the Y-th symbol as the first slot, so as to use this first slot as the BAT of the CC belonging to TAG2.

[0080] Example 2: As Figure 4 shown, map T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) to the second time point T2 (i.e., the timing start symbol) on the time domain resource corresponding to CC1, and then according to the SCS of CC1, count Y symbols starting from T2, and use the first slot after the Y-th symbol as the first slot, so as to use this first slot as the BAT of the CC belonging to TAG2.

[0081] Another possible situation: The CCs in the target CC group belong to different TAGs.

[0082] Assume that the CC where ACK is located (hereinafter referred to as CC0) belongs to TAG1, and among the CCs in the target CC group, some belong to TAG2 and some belong to TAG3. If among the CCs belonging to TAG2, the SCS of CC1 is the smallest, then CC1 is used as the reference CC corresponding to TAG2; if among the CCs belonging to TAG3, the SCS of CC2 is the smallest, then CC2 is used as the reference CC corresponding to TAG3.

[0083] Example 3: As Figure 5As shown, according to at least one of the TA corresponding to TAG1 and the TA corresponding to TAG2 to which CC0 belongs, map T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) to the first time point TAG2-T1 (i.e., the timing start symbol corresponding to TAG2) of the time domain resource corresponding to CC1, and then according to the SCS of CC1, count Y symbols starting from TAG2-T1, and use the first slot after the Yth symbol (TAG2-T6) as the first slot corresponding to TAG2, so as to use this first slot as the BAT of the CC belonging to TAG2. And, according to at least one of the TA corresponding to TAG1 where CC0 is located and the TA corresponding to TAG3, map T0 to the first time point TAG3-T1 (i.e., the timing start symbol corresponding to TAG3) of the time domain resource corresponding to CC2, and then according to the SCS of CC2, count Y symbols starting from TAG3-T1, and use the first slot after the Yth symbol (TAG3-T6) as the first slot corresponding to TAG3, so as to use this first slot as the BAT of the CC belonging to TAG3.

[0084] Example 4: As Figure 6 shown, map T0 (i.e., the first symbol) to the second time point TAG2-T2 (i.e., the timing start symbol corresponding to TAG2) of the time domain resource corresponding to CC1, and then according to the SCS of CC1, count Y symbols starting from TAG2-T2, and use the first slot after the Yth symbol (TAG2-T6) as the first slot corresponding to TAG2, so as to use this first slot as the BAT of the CC belonging to TAG2. And, map T0 (i.e., the first symbol) to the second time point TAG3-T2 (i.e., the timing start symbol corresponding to TAG3) of the time domain resource corresponding to CC2, and then according to the SCS of CC2, count Y symbols starting from TAG3-T2, and use the first slot after the Yth symbol (TAG3-T6) as the first slot corresponding to TAG3, so as to use this first slot as the BAT of the CC belonging to TAG3.

[0085] It should be noted that the value of Y corresponding to each TAG may be the same or different, and can be specifically determined according to actual usage requirements, which is not limited in the embodiments of the present application.

[0086] In addition, when the CCs in the target CC group belong to multiple TAGs, the number of TAGs is not limited. For example, there can be 2 TAGs, 3 TAGs, 4 TAGs, etc. In this application, 2 TAGs are taken as an example for illustrative purposes. For the implementation methods when the CCs in the target CC group belong to other numbers of TAGs, they are similar to the implementation method when the CCs in the target CC group belong to 2 TAGs. To avoid repetition, they will not be elaborated in this article.

[0087] The second case: The reference CC is the second CC, which is the CC with the smallest SCS in the above-mentioned target CC group.

[0088] Based on the above second case, in one implementation, the above timing start symbol can be a symbol determined according to the first symbol. It can be understood that the above timing start symbol can be the symbol corresponding to the mapping position of the first symbol on the time domain resource corresponding to the second CC.

[0089] In another implementation, the timing start symbol is a symbol determined according to the first symbol and the second TA. Among them, the above second TA can include at least one of the following: the TA corresponding to the second TAG, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

[0090] It can be understood that the above timing start symbol can be the symbol corresponding to the mapping position of the first symbol on the time domain resource corresponding to the second CC minus and / or plus the second TA. Or rather, the above timing start symbol can be the symbol corresponding to the mapping position of the first symbol on the time domain resource corresponding to the second CC moving backward and / or forward by the second TA. Among them, moving backward means the number of symbols before the mapping position of the first symbol on the time domain resource corresponding to the second CC, and moving forward means the number of symbols after / next to the mapping position of the first symbol on the time domain resource corresponding to the second CC. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n is symbol (n - m), and moving forward k symbols from symbol n is symbol (n + k).

[0091] It can also be understood that if the time of the first symbol is t1 and the time difference between the TA corresponding to the CC where the ACK is located and the TA corresponding to the second TAG is t2, if the TA corresponding to the CC where the ACK is located is greater than the TA corresponding to the second TAG, the time of the timing start symbol is (t1 + t2), and if the TA corresponding to the CC where the ACK is located is less than the TA corresponding to the second TAG, the time of the timing start symbol is (t1 - t2).

[0092] Exemplarily, assume that the TA corresponding to the above-mentioned second TAG is 2 symbols, and the TA corresponding to the TAG to which the CC where ACK is located belongs is 5 symbols. Then the above-mentioned timing start symbol can be the symbol corresponding to the mapping position of the first symbol on the time domain resource corresponding to the second CC plus 5 symbols and then minus 2 symbols. That is to say, the timing start symbol determined according to the TA corresponding to the second TAG and the TA corresponding to the TAG to which the CC where ACK is located belongs lags 3 symbols in time compared to the symbol on the time domain resource corresponding to the CC where ACK is located. It is necessary to advance the mapping position of the first symbol on the time domain resource corresponding to the first CC forward by 3 symbols. If the mapping position is the symbol n on the time domain resource corresponding to the first CC, then the timing start symbol is the symbol (n + 3).

[0093] It should be noted that based on the above second case, the TAG to which the CC where ACK is located belongs and the first TAG and the second TAG can be different TAGs or the same TAG, which can be specifically determined according to actual usage requirements, and the embodiments of the present application do not make any limitations.

[0094] In addition, the first TAG and the second TAG can be different TAGs.

[0095] Optionally, in the above second case, when the target CC can be the above-mentioned first CC and the first CC can be the CC with the smallest SCS in the first TAG, the first slot can be the first slot after the second symbol on the time domain resource corresponding to the first CC.

[0096] Optionally, in some embodiments, the above-mentioned second symbol can be a symbol determined according to the second slot.

[0097] Among them, the above-mentioned second slot can be the first slot after the third symbol on the time domain resource corresponding to the second CC, and the third symbol can be the Yth symbol after the timing start symbol on the time domain resource corresponding to the second CC. It can be understood that the above-mentioned second symbol can be the symbol corresponding to the mapping position of the second slot (or understood as the first symbol in the second slot) on the time domain resource corresponding to the first CC.

[0098] In some embodiments, the above-mentioned second symbol can be a symbol determined according to the second slot and the third TA. Among them, the above-mentioned third TA can include at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the second TAG.

[0099] It can be understood that the above second symbol can be the symbol corresponding to the mapping position of the second slot (e.g., the first symbol of the second slot) on the time-domain resource corresponding to the above first CC minus and / or plus the third TA. Or rather, the above second symbol can be the symbol corresponding to the mapping position of the second slot (e.g., the first symbol of the second slot) on the time-domain resource corresponding to the above first CC moving backward and / or forward by the third TA. Among them, moving backward means the number of symbols before the mapping position of the second slot (e.g., the first symbol of the second slot) on the time-domain resource corresponding to the above first CC, and moving forward means the number of symbols after / next to the mapping position of the second slot (e.g., the first symbol of the second slot) on the time-domain resource corresponding to the above first CC. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n, it is symbol (n - m), and moving forward k symbols from symbol n, it is symbol (n + k).

[0100] It can also be understood that if the time of the first symbol of the second slot is t3, and the time difference between the TA corresponding to the first TAG and the TA corresponding to the second TAG is t4, if the TA corresponding to the second TAG is greater than the TA corresponding to the first TAG, the time of the timing start symbol is (t3 + t4), and if the TA corresponding to the second TAG is less than the TA corresponding to the first TAG, the time of the timing start symbol is (t3 - t4).

[0101] Exemplarily, assume that the TA corresponding to the above first TAG is 3 symbols, and the TA corresponding to the second TAG is 2 symbols. Then the above second symbol can be the symbol corresponding to the mapping position of the second slot on the time-domain resource corresponding to the first CC plus 2 symbols and then minus 3 symbols. That is to say, the second symbol determined according to the TA corresponding to the first TAG and the TA corresponding to the second TAG is one symbol earlier in time than the symbol on the time-domain resource corresponding to the second CC. It is necessary to move the mapping position of the second slot on the time-domain resource corresponding to the first TAG backward by 1 symbol. If the mapping position is symbol n on the time-domain resource corresponding to the first CC, the second symbol is symbol (n - 1).

[0102] In some other embodiments, the above second symbol can be the symbol determined according to the third symbol.

[0103] Among them, the third symbol can be the Yth symbol after the timing start symbol on the time-domain resource corresponding to the second CC. It can be understood that the above second symbol can be the symbol corresponding to the mapping position of the third symbol on the time-domain resource corresponding to the first CC.

[0104] In still other embodiments, the second symbol is a symbol determined according to a third symbol and a third TA. The third TA may include at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the second TAG.

[0105] It can be understood that the above second symbol may be the symbol corresponding to the mapping position of the third symbol on the time-domain resource corresponding to the first CC minus and / or plus the third TA. Or rather, the above second symbol may be the symbol corresponding to the mapping position of the third symbol on the time-domain resource corresponding to the first CC moving backward and / or forward by the third TA. Here, moving backward refers to the number of symbols before the mapping position of the third symbol on the time-domain resource corresponding to the first CC, and moving forward refers to the number of symbols after / next to the mapping position of the third symbol on the time-domain resource corresponding to the first CC. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n results in symbol (n - m), and moving forward k symbols from symbol n results in symbol (n + k).

[0106] It can also be understood that if the time of the third symbol is t3, and the time difference between the TA corresponding to the first TAG and the TA corresponding to the second TAG is t4, if the TA corresponding to the second TAG is greater than the TA corresponding to the first TAG, the time of the timing start symbol is (t3 + t4), and if the TA corresponding to the second TAG is less than the TA corresponding to the first TAG, the time of the timing start symbol is (t3 - t4).

[0107] In the embodiments of the present application, based on the above second case, the BAT of the CC belonging to the first TAG may be the first slot, and the BAT of the CC belonging to the second TAG may be the second slot.

[0108] It can be understood that for the above second case, the communication device may determine the BATs of all CCs in the first TAG by determining the BAT of the first CC (the CC with the smallest SCS in the first TAG); and determine the BATs of all CCs in the second TAG by determining the BAT of the second CC (the CC with the smallest SCS in the target CC group).

[0109] The following will exemplarily illustrate the above second case (the reference CC is the second CC and the target CC is the first CC) with reference to the accompanying drawings.

[0110] Assume that the CC where ACK is located (hereinafter referred to as CC0) belongs to TAGX, and among the CCs in the target CC group, some belong to TAG2 and some belong to TAG3. If among the CCs in the target CC group, the SCS of CC1 belonging to TAG2 is the smallest, then CC1 is used as the common reference CC for TAG2 and TAG3. Among them, TAGX can be the same as TAG2 or TAG3, or different from both TAG2 and TAG3.

[0111] Example 5: As Figure 7 shown, according to at least one of the TA of TAGX to which CC0 belongs and the TA corresponding to TAG2, map T0 (the last symbol occupied by ACK on CC0, that is, the first symbol) to the first time point T1 (that is, the timing start symbol) on the time domain resource corresponding to CC1; then according to the SCS of CC1, count Y symbols starting from T1, and use the first slot after the Yth symbol (T6, that is, the above-mentioned third symbol) as the first slot corresponding to TAG2, so as to use this first slot as the BAT of the CC belonging to TAG2. And according to at least one of the TA of TAG2 and the TA of TAG3, map T6 (that is, the above-mentioned third symbol) to T7 (that is, the above-mentioned second symbol) on the time domain resource corresponding to CC2 (that is, the above-mentioned first CC) with the smallest SCS in TAG3, and use the next slot after T7 on the time domain resource corresponding to CC2 as the first slot of CC2, so as to use the next slot after T7 as the BAT of the CC belonging to TAG3.

[0112] Example 6: As Figure 8 shown, map T0 (the last symbol occupied by ACK on CC0, that is, the first symbol) to the first time point T1 (that is, the timing start symbol) on the time domain resource corresponding to CC1; then according to the SCS of CC1, count Y symbols starting from T1, and use the first slot after the Yth symbol (T6, that is, the above-mentioned third symbol) as the first slot corresponding to TAG2, so as to use this first slot as the BAT of the CC belonging to TAG2. And according to at least one of the TA of TAG2 and the TA of TAG3, map T6 (that is, the above-mentioned third symbol) to T7 (that is, the above-mentioned second symbol) on the time domain resource corresponding to CC2 (that is, the above-mentioned first CC) with the smallest SCS in TAG3, and use the next slot after T7 on the time domain resource corresponding to CC2 as the first slot of CC2, so as to use the first slot of CC2 as the BAT of the CC belonging to TAG3.

[0113] Example 7: As Figure 9As shown, according to at least one of the TA corresponding to TAGX where CC0 is located and the TA corresponding to TAG2, map T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) to the first time point T1 (i.e., the timing start symbol) on the time domain resource corresponding to CC1; then, according to the SCS of CC1, count Y symbols starting from T1, and take the first slot (the first slot) after the Y-th symbol (T6, i.e., the third symbol above) as the first slot corresponding to TAG2, so as to take this first slot as the BAT of the CC belonging to TAG2. And map T6 (i.e., the third symbol above) to T7 (i.e., the second symbol above) on the time domain resource corresponding to CC2 (i.e., the first CC) with the minimum SCS in TAG3, and take the next slot after T7 on the time domain resource corresponding to CC2 as the first slot of CC2, so as to take this first slot as the BAT of the CC belonging to TAG3.

[0114] Example 8: As shown in 10, map T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) to the first time point T2 (i.e., the timing start symbol) on the time domain resource corresponding to CC1; then, according to the SCS of CC1, count Y symbols starting from T2, and take the first slot (the first slot) after the Y-th symbol (T6, i.e., the third symbol above) as the first slot corresponding to TAG2, so as to take this first slot as the BAT of each CC in TAG2. And map T6 (i.e., the third symbol above) to T7 (i.e., the second symbol above) on the time domain resource corresponding to CC2 (i.e., the first CC) with the minimum SCS in TAG3, and take the next slot after T7 on the time domain resource corresponding to CC2 as the first slot of CC2, so as to take this first slot as the BAT of the BWP of the CC belonging to TAG3.

[0115] Example 9: As Figure 11As shown, according to at least one of the TA corresponding to TAGX where CC0 is located and the TA corresponding to TAG2, map T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) to the first time point T1 (i.e., the timing start symbol) on the time domain resource corresponding to CC1; then, according to the SCS of CC1, count Y symbols starting from T1, and use the first slot (i.e., the second slot mentioned above) after the Yth symbol (T6, i.e., the third symbol mentioned above) as the first slot corresponding to TAG2, thereby using this first slot as the BAT for each CC in TAG2. And according to at least one of the TA of TAG2 and the TA of TAG3 (or without considering TA), map the first slot (i.e., the second slot mentioned above) after T6 to the time point on the time domain resource corresponding to CC2 (i.e., the first CC mentioned above) with the minimum SCS in TAG3, that is, map the first symbol in the first slot after T6 to the symbol position on the time domain resource corresponding to CC2 with the minimum SCS in TAG3, and use the next slot after this time point on the time domain resource corresponding to CC2 as the BAT for the CCs belonging to TAG3.

[0116] Example 10: As Figure 12 shown, map T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) to the first time point T2 (i.e., the timing start symbol) on the time domain resource corresponding to CC1; then, according to the SCS of CC1, count Y symbols starting from T2, and use the first slot (i.e., the second slot mentioned above) after the Yth symbol (T6, i.e., the third symbol mentioned above) as the first slot corresponding to TAG2, thereby using this first slot as the BAT for each CC in TAG2. And according to at least one of the TA of TAG2 and the TA of TAG3 (or without considering TA), map the first slot (i.e., the second slot mentioned above) after T6 to a time point on the time domain resource corresponding to CC2 (i.e., the first CC mentioned above) with the minimum SCS in TAG3, that is, map the first symbol in the first slot after T6 to the symbol position on the time domain resource corresponding to CC2 with the minimum SCS in TAG3, and use the next slot after this time point on the time domain resource corresponding to CC2 as the BAT for the CCs belonging to TAG3.

[0117] The third case: The reference CC is the CC where ACK is located, the CC where ACK is located is the CC in the target CC group and the CC with the minimum SCS in the CC where ACK is located.

[0118] Optionally, in the above third case, the timing start symbol can be the first symbol.

[0119] Based on the above third case, in a possible implementation, the target CC may be the CC where the ACK is located. In this case, the above first slot may be the first slot after Y symbols after the symbol at the timing start point on the time domain resource corresponding to the CC where the ACK is located.

[0120] In the embodiments of the present application, when the target CC is the CC where the ACK is located, in the target CC group, the BAT of the CCs belonging to the same TAG group is the third slot.

[0121] Among them, the above third slot may be the first slot after the fourth symbol on the time domain resource corresponding to the third CC, and the third CC may be the CC with the smallest SCS in the same TAG group.

[0122] In one implementation, the above fourth symbol may be a symbol determined according to the first slot.

[0123] It can be understood that the above fourth symbol may be the symbol corresponding to the mapping position of the first slot on the time domain resource corresponding to the third CC. That is to say, the above fourth symbol may be the symbol corresponding to the mapping position of the first symbol of the first slot on the time domain resource corresponding to the third CC.

[0124] In another implementation, the fourth symbol is a symbol determined according to the first slot and the fourth TA. Among them, the above fourth TA may include at least one of the following: the TA corresponding to the TAG to which the third CC belongs, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

[0125] It can be understood that the above fourth symbol may be the symbol corresponding to the mapping position of the first slot on the time domain resource corresponding to the third CC minus and / or plus the fourth TA. Or rather, the above fourth symbol may be the symbol corresponding to the mapping position of the first slot (such as the first symbol of the first slot) on the time domain resource corresponding to the above third CC after moving backward and / or forward by the fourth TA. Among them, moving backward means the number of symbols before the mapping position of the first slot (such as the first symbol of the first slot) on the time domain resource corresponding to the third CC, and moving forward means the number of symbols after / next to the mapping position of the first slot (such as the first symbol of the first slot) on the time domain resource corresponding to the third CC. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n, it is symbol (n - m), and moving forward k symbols from symbol n, it is symbol (n + k).

[0126] It can also be understood that if the time of the first slot (for example, the first symbol of the first slot) is t5, and the time difference between the TA corresponding to the TAG to which the CC where the ACK is located belongs and the TA corresponding to the TAG to which the third CC belongs is t6, if the TA corresponding to the TAG to which the CC where the ACK is located is greater than the TA corresponding to the TAG to which the third CC belongs, the time of the fourth symbol is (T1 + T2), and if the TA corresponding to the TAG to which the CC where the ACK is located is less than the TA corresponding to the TAG to which the third CC belongs, the time of the fourth symbol is (T1 - T2).

[0127] Exemplarily, assume that the TA corresponding to the TAG to which the above-mentioned third CC belongs is 3 symbols, and the TA corresponding to the TAG to which the CC where the ACK is located belongs is 4 symbols. Then the above-mentioned fourth symbol can be the symbol corresponding to the mapping position of the first slot on the time domain resource corresponding to the third CC plus 4 symbols and then minus 3 symbols. That is to say, the fourth symbol determined according to the TA corresponding to the TAG to which the third CC belongs and the TA corresponding to the TAG to which the CC where the ACK is located lags behind the symbol on the time domain resource corresponding to the CC where the ACK is located by 1 symbol in time. It is necessary to move the mapping position of the first slot (for example, the first symbol of the first slot) on the time domain resource corresponding to the third CC forward by 1 symbol. If the mapping position is the symbol n on the time domain resource corresponding to the first CC, the starting symbol for timing is the symbol (n + 1).

[0128] Next, with reference to the accompanying drawings, an implementation manner of the above-mentioned third case (the reference CC and the target CC are both the CC where the ACK is located) will be exemplarily described.

[0129] A possible situation: The CCs in the target CC group belong to the same TAG.

[0130] Assume that the CC where the ACK is located (hereinafter referred to as CC0) belongs to TAG1, and the CCs in the target CC group all belong to TAG2. If among the CCs belonging to TAG2, the SCS of CC1 (i.e., the above-mentioned third CC) is the smallest, then CC1 belonging to TAG2 is used as the CC of TAG2 for determining the BAT.

[0131] Example 11: As Figure 13As shown in the figure, T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) is determined as the timing start symbol. According to the SCS of CC0, after counting Y symbols starting from T0, the first slot after the Yth symbol (denoted as T3) is used as the first slot. Then, according to at least one of the TA corresponding to TAG1 where CC0 is located and the TA corresponding to TAG2 (or without considering TA), this first slot is mapped to a time point on the time domain resource corresponding to CC1 (i.e., the above-mentioned third CC), and the next slot after this time point on the time domain resource corresponding to CC1 is used as the BAT of the CC belonging to TAG2.

[0132] Another possible situation: The CCs in the target CC group belong to different TAGs.

[0133] Suppose the CC where ACK is located (hereinafter referred to as CC0) belongs to TAG1, and among the CCs in the target CC group, some belong to TAG2 and some belong to TAG3. If among the CCs belonging to TAG2, the SCS of CC1 is the smallest, then CC1 is used as the third CC corresponding to TAG2; among the CCs belonging to TAG3, the SCS of CC2 is the smallest, then CC2 is used as the third CC corresponding to TAG3.

[0134] Example 12: As Figure 14 As shown in the figure, T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) is determined as the timing start symbol. According to the SCS of CC0, after counting Y symbols starting from T0, the first slot after the Yth symbol (denoted as T3) is used as the first slot. Then, according to at least one of the TA corresponding to TAG1 where CC0 is located and the TA corresponding to TAG2 (or without considering TA), this first slot is mapped to a time point on the time domain resource corresponding to CC1 (i.e., the third CC corresponding to TAG2), and the next slot after this time point on the time domain resource corresponding to CC1 is used as the BAT of the CC belonging to TAG2. And according to at least one of the TA corresponding to TAG1 where CC0 is located and the TA corresponding to TAG3 (or without considering TA), this first slot is mapped to a time point on the time domain resource corresponding to CC2 (i.e., the third CC corresponding to TAG3), and the next slot after this time point on the time domain resource corresponding to CC2 is used as the BAT of the CC belonging to TAG3.

[0135] Based on the above third case, in another possible implementation, the target CC is the first CC, which is the CC with the smallest SCS in the first TAG. In this case, the first slot can be the first slot after the fifth symbol on the time-domain resource corresponding to the first CC.

[0136] In one implementation, the above-mentioned fifth symbol can be a symbol determined according to the sixth symbol.

[0137] Among them, the above-mentioned sixth symbol can be the Yth symbol after the timing start symbol on the time-domain resource corresponding to the CC where the ACK is located. It can be understood that in the above implementation, the fifth symbol can be the symbol corresponding to the mapping position of the sixth symbol on the time-domain resource corresponding to the first CC.

[0138] In another implementation, the above-mentioned fifth symbol can be a symbol determined according to the sixth symbol and the first TA. Among them, the above-mentioned first TA can include at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

[0139] It can be understood that in the above implementation, the fifth symbol can be the symbol corresponding to the mapping position of the sixth symbol on the time-domain resource corresponding to the first CC minus and / or plus the first TA. Or rather, the above-mentioned fifth symbol can be the symbol corresponding to the mapping position of the sixth symbol on the time-domain resource corresponding to the first CC after moving backward and / or forward by the first TA. Among them, moving backward refers to the number of symbols before (before) the mapping position of the sixth symbol on the time-domain resource corresponding to the first CC, and moving forward refers to the number of symbols after (after / next) the mapping position of the sixth symbol on the time-domain resource corresponding to the first CC. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n is symbol (n - m), and moving forward k symbols from symbol n is symbol (n + k).

[0140] It can also be understood that if the time of the sixth symbol is t7, and the time difference between the TA corresponding to the TAG to which the CC where the ACK is located belongs and the TA corresponding to the first TAG is t8, if the TA corresponding to the TAG to which the CC where the ACK is located belongs is greater than the TA corresponding to the first TAG, then the time of the fifth symbol is (t7 + t8), and if the TA corresponding to the TAG to which the CC where the ACK is located belongs is less than the TA corresponding to the first TAG, then the time of the fifth symbol is (t7 - t8).

[0141] Exemplarily, assume that the TA corresponding to the above-mentioned first TAG is 5 symbols, and the TA corresponding to the TAG to which the CC where ACK is located belongs is 3 symbols. Then, the above-mentioned fifth symbol can be the symbol corresponding to adding 3 symbols to the mapping position of the sixth symbol on the time-domain resource corresponding to the third CC and then subtracting 5 symbols. That is to say, the fifth symbol determined according to the TA corresponding to the first TAG and the TA corresponding to the TAG to which the CC where ACK is located belongs is 2 symbols earlier in time than the symbol on the time-domain resource corresponding to the CC where ACK is located. It is necessary to move the mapping position of the sixth symbol on the time-domain resource corresponding to the first CC backward by 2 symbols. If the mapping position is the symbol n on the first CC, the starting symbol for timing is the symbol (n - 2).

[0142] Based on the above third case, when the target CC is the first CC, in the target CC group, the BAT of the CC belonging to the first TAG is the first slot.

[0143] Next, another implementation manner of the above third case (the reference CC is the CC where ACK is located, and the target CC is the first CC) will be exemplarily described in conjunction with the accompanying drawings.

[0144] A possible case: The CCs in the target CC group belong to the same TAG.

[0145] Assume that the CC where ACK is located (hereinafter referred to as CC0) belongs to TAG1, and the CCs in the target CC group all belong to TAG2. If among the CCs belonging to TAG2, the SCS of CC1 (i.e., the above-mentioned first CC) is the smallest, then CC1 belonging to TAG2 is used as the CC for determining the BAT in TAG2.

[0146] Example 13: As Figure 15 shown, determine T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) as the starting symbol for timing. According to the SCS of CC0, count Y symbols starting from T0. According to at least one of the TA corresponding to TAG1 to which CC0 belongs and the TA corresponding to TAG2, map the Yth symbol (i.e., the above-mentioned sixth symbol, denoted as T3) to T4 (i.e., the above-mentioned fifth symbol) on the time-domain resource corresponding to CC1, and use the first slot after T4 as the first slot, so as to use this first slot as the BAT of the CC belonging to TAG2.

[0147] Example 14: As Figure 16As shown, T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) is determined as the timing start symbol. According to the SCS of CC0, count Y symbols starting from T0, map the Yth symbol (i.e., the above-mentioned sixth symbol, denoted as T3) to T5 (i.e., the above-mentioned fifth symbol) on the time-domain resource corresponding to CC1, and take the first slot after T5 as the first slot, so as to take this first slot as the BAT of the CC belonging to TAG2.

[0148] Another possible case: The CCs in the target CC group belong to different TAGs.

[0149] Suppose the CC where ACK is located (hereinafter referred to as CC0) belongs to TAG1, and among the CCs in the target CC group, some belong to TAG2 and some belong to TAG3. If among the CCs belonging to TAG2, the SCS of CC1 is the smallest, then CC1 is taken as the target CC corresponding to TAG2; among the CCs belonging to TAG3, the SCS of CC2 is the smallest, then CC2 is taken as the target CC corresponding to TAG3.

[0150] Example 15: As Figure 17 shown, T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) is determined as the timing start symbol. According to the SCS of CC0, count Y symbols starting from T0. Then, according to at least one of the TA corresponding to TAG1 where CC0 is located and the TA corresponding to TAG2, map the Yth symbol (i.e., the above-mentioned sixth symbol, denoted as T3) to TAG2-T4 (i.e., the fifth symbol corresponding to TAG2) on the time-domain resource corresponding to CC1, and take the first slot after TAG2-T4 as the first slot, so as to take this first slot as the BAT of the CC belonging to TAG2. And according to at least one of the TA corresponding to TAG1 where CC0 is located and the TA corresponding to TAG3, map the Yth symbol (i.e., the above-mentioned sixth symbol, denoted as T3) to TAG3-T4 (i.e., the fifth symbol corresponding to TAG3) on the time-domain resource corresponding to CC2, and take the first slot after TAG3-T4 (the first slot) as the first slot, so as to take this first slot as the BAT of the CC belonging to TAG3.

[0151] Example 16: As Figure 18As shown, T0 (the last symbol occupied by ACK on CC0, i.e., the first symbol) is determined as the timing start symbol, and according to the SCS of CC0, Y symbols are counted starting from T0. Then, the Yth symbol (i.e., the above-mentioned sixth symbol, denoted as T3) is mapped to TAG2 - T5 (i.e., the fifth symbol corresponding to TAG2) on the time-domain resource corresponding to CC1, and the first slot after TAG2 - T5 is used as the first slot, so that this first slot is used as the BAT of the CC belonging to TAG2. And the Yth symbol (i.e., the above-mentioned sixth symbol, denoted as T3) is mapped to TAG3 - T5 (i.e., the fifth symbol corresponding to TAG3) on the time-domain resource corresponding to CC2, and the first slot after TAG3 - T5 is used as the first slot, so that this first slot is used as the BAT of the CC belonging to TAG3.

[0152] In the method for determining the beam application time provided by the embodiment of the present application, since the CCs belonging to the same TAG have a certain correlation relationship in the time domain (such as the same SCS or the SCS being a multiple relationship), in the case where the CCs in the target CC group belong to different TAGs or the TAGs to which the CCs in the target CC group belong are different from the TAG to which the CC where ACK is located belongs, by determining the timing start symbol corresponding to the reference CC, and determining the first slot corresponding to the target CC, and determining the BAT of the CC belonging to each TAG in the target CC group according to the first slot, it is possible to make the beam activation times of the CCs belonging to the same TAG in the target CC group consistent, that is, it is possible to align the beams of the CCs belonging to the same TAG, so that data transmission can be correctly performed.

[0153] In the embodiment of the present application, the network side device may configure multiple BWPs for the cell corresponding to a CC, and the multiple BWPs include an active BWP and an inactive BWP. During the data transmission process, the communication device (such as a terminal and the network side device) may send or receive data on the time-domain resource corresponding to an active BWP of the CC. Therefore, the beam application time of the CC (or all BWPs of the CC) can be determined by determining the beam application time of an active BWP (such as the BWP with the smallest SCS) on the time-domain resource corresponding to the CC.

[0154] As Figure 19 shown, the embodiment of the present application provides a method for determining the beam application time, and this method for determining the beam application time may include the following steps 301 - step 303.

[0155] Step 301: The communication device determines the timing start symbol corresponding to the reference BWP according to the seventh symbol.

[0156] Among them, the above seventh symbol may be the last symbol occupied by the ACK of the beam indication information.

[0157] Step 302: The communication device determines the fourth slot corresponding to the target BWP according to the timing start symbol.

[0158] Among them, the above target BWP may be the BWP where the ACK is located or the first BWP in the target BWP group whose affiliated CC belongs to the third TAG.

[0159] It can be understood that the BWP where the above ACK is located may be the BWP carrying the ACK of the beam indication information, specifically, the BWP of the CC carrying the ACK of the beam indication information.

[0160] Step 303: The communication device determines the BAT of the BWP of the CC belonging to each TAG in the target BWP group according to the fourth slot.

[0161] In the embodiment of the present application, after the terminal receives the beam indication information, the terminal may send an ACK of the beam indication information to the network side device. Then, the communication device (terminal and / or network side device) may determine the above timing start symbol on the time domain resource corresponding to the reference BWP according to the above seventh symbol (the last symbol occupied by the ACK of the beam indication information), and determine the fourth slot on the time domain resource corresponding to the above target BWP according to the timing start symbol, and then determine the BAT of the BWP of the CC belonging to each TAG in the target BWP group according to the fourth slot, that is, the communication device may determine the BAT of the BWP of the CC of each TAG in the target BWP group according to the fourth slot.

[0162] It should be noted that in the embodiment of the present application, the BWP in the above target BWP group may be the BWP applying the above beam indication information. Among them, the beam indication information may be common beam indication information.

[0163] Optionally, in the embodiment of the present application, the CC to which the BWP in the above target BWP group belongs and the CC to which the BWP where the ACK is located belongs belong to at least two TAGs.

[0164] Optionally, in the embodiments of the present application, the CC to which the BWP in the target BWP group belongs may belong to at least one TAG. Among them, when the CC to which the BWP in the target BWP group belongs belongs to one TAG, the TAG to which the CC to which the BWP where the ACK is located belongs is different from the TAG to which the CC to which the BWP in the target BWP group belongs; when the CC to which the BWP in the target BWP group belongs belongs to multiple TAGs, the TAG to which the CC to which the BWP where the ACK is located belongs may be the same as or different from the TAG to which the CC to which the BWP in the target BWP group belongs, which can be specifically determined according to actual usage requirements, and the present application does not limit this.

[0165] Optionally, in the embodiments of the present application, when the CC to which the BWP in the target BWP group belongs belongs to at least two TAGs, the at least two TAGs correspond to the same TCI state pool, or the at least two TAGs correspond to different TCI state pools. That is, when the network side device configures the TCI state pool for the CC to which the BWP in the target BWP group belongs, regardless of the number of TAGs to which the CC to which the BWP in the target BWP group belongs, a TCI state pool can be configured for the CC to which the BWP in the target BWP group belongs, or a TCI state pool can be configured for the CCs belonging to the same TAG according to the TAG to which the CC to which the BWP in the target BWP group belongs, and another TCI state pool can be configured for the CCs belonging to another TAG.

[0166] In the embodiments of the present application, the network side device may indicate the TCI state corresponding to the CC to which the BWP in the target BWP group belongs through downlink information, such as downlink control information (DCI), and then determine the downlink common beam information and / or uplink common beam information of the BWP in the target BWP group according to the TCI state.

[0167] Optionally, in the embodiments of the present application, the above reference BWP (the BWP used to determine the timing start symbol) may be the BWP where the above ACK is located, the above first BWP, or the second BWP to which the CC to which the target BWP group belongs belongs to the fourth TAG.

[0168] It can be understood that when the above reference BWP is the above second BWP, the CC to which the BWP in the above target BWP group belongs may belong to multiple TAGs.

[0169] In the embodiments of the present application, when the above reference BWP is different, the determined timing start symbols are different, and the target BWP is also different, so the determined fourth slot is also different. Thus, the BATs of the BWPs of the CCs belonging to each TAG in the target BWP group are different. Below, the beam application time determination method provided by the embodiments of the present application will be exemplarily described with three cases of the reference BWP.

[0170] Case 1: The reference BWP is the first BWP, and the first BWP is the BWP with the smallest SCS among the CCs belonging to the third TAG.

[0171] Based on the above Case 1, in one implementation, the above timing start symbol can be the symbol determined according to the seventh symbol. It can be understood that the above timing start symbol can be the symbol corresponding to the mapped position of the seventh symbol on the time domain resource corresponding to the first BWP.

[0172] In another implementation, the timing start symbol can be the symbol determined according to the seventh symbol and the fifth TA. Wherein, the above fifth TA may include at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the TAG to which the CC to which the BWP where the ACK is located belongs.

[0173] It can be understood that the above timing start symbol can be the symbol corresponding to the mapped position of the seventh symbol on the time domain resource corresponding to the first BWP minus and / or plus the fifth TA. Or rather, the above timing start symbol can be the symbol corresponding to the mapped position of the seventh symbol on the time domain resource corresponding to the first BWP moving backward and / or forward by the fifth TA. Wherein, moving backward means the number of symbols before (before) the mapped position of the seventh symbol on the time domain resource corresponding to the first BWP, and moving forward means the number of symbols after (after / next) the mapped position of the seventh symbol on the time domain resource corresponding to the first BWP. For example, if the mapped position is at symbol n, moving backward m symbols from symbol n, it is symbol (n - m), and moving forward k symbols from symbol n, it is symbol (n + k).

[0174] For the example of how to determine the timing start symbol, specifically, reference can be made to the relevant examples of determining the timing start symbol on the time domain resource corresponding to the first CC in the above embodiments. To avoid repetition, it will not be elaborated here.

[0175] In the embodiments of the present application, the TAG to which the CC to which the BWP where the ACK is located belongs and the third TAG may be different TAGs.

[0176] Optionally, in the above-mentioned first case, when the above-mentioned target BWP is the above-mentioned first BWP; the fourth slot may be the first slot after Y symbols after the symbol at the timing start point on the time domain resource corresponding to the first BWP.

[0177] It should be noted that the value of the above-mentioned Y can be configured by the network device. Among them, each Y configured by the network can correspond to at least one of a group of CC, BWP, and SCS.

[0178] Optionally, based on the above-mentioned first case, in the target BWP group, the BAT of the BWP of the CC belonging to the third TAG is the fourth slot.

[0179] It can be understood that for the above-mentioned first case, the communication device can determine the BAT of the BWP of all CCs belonging to the third TAG by determining the BAT of the BWP with the smallest SCS among the CCs belonging to the third TAG.

[0180] The above-mentioned first case (the reference BWP and the target BWP are both the first BWP) will be exemplarily described below with reference to the accompanying drawings.

[0181] A possible case: The CCs to which the BWPs in the target BWP group belong to the same TAG.

[0182] Suppose the CC to which the BWP where ACK is located (hereinafter referred to as BWP0) belongs to TAG1, and the CCs to which the BWPs in the target BWP group belong to TAG2. If among the CCs belonging to TAG2, the SCS of BWP1 (i.e., the above-mentioned first BWP) is the smallest, then BWP1 is used as the reference BWP of the target BWP group.

[0183] Example 17: As Figure 3 shown, according to at least one of the TA corresponding to TAG1 and the TA corresponding to TAG2 to which the CC to which BWP0 belongs belongs, map T0 (the last symbol occupied by ACK on BWP0, that is, the seventh symbol) to the first time point T1 (that is, the timing start point symbol) on the time domain resource corresponding to BWP1, and then according to the SCS of BWP1, count Y symbols starting from T1, and use the first slot after the Yth symbol as the fourth slot, so as to use this first slot as the BAT of the BWP of the CC belonging to TAG2.

[0184] Example 18: As Figure 4As shown, map T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) to the second time point T2 (i.e., the timing start symbol) of the time domain resource corresponding to BWP1, and then according to the SCS of BWP1, count Y symbols starting from T2, and take the first slot after the Y-th symbol as the fourth slot, so as to take this first slot as the BAT of the BWP of the CC belonging to TAG2.

[0185] Another possible case: The BWPs in the target BWP group belong to different TAGs.

[0186] Suppose the CC to which the BWP where ACK is located (hereinafter referred to as BWP0) belongs belongs to TAG1. Among the CCs to which the BWPs in the target BWP group belong, some belong to TAG2 and some belong to TAG3. If among the CCs belonging to TAG2, the SCS of BWP1 is the smallest, then take BWP1 as the reference BWP corresponding to TAG2; if among the CCs belonging to TAG3, the SCS of BWP2 is the smallest, then take BWP2 as the reference BWP corresponding to TAG3.

[0187] Example 19: As Figure 5 shown, map T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) to the first time point TAG2-T1 (i.e., the timing start symbol corresponding to TAG2) of the time domain resource corresponding to BWP1 according to at least one of the TA corresponding to TAG1 and the TA corresponding to TAG2 to which the CC to which BWP0 belongs belongs, and then according to the SCS of BWP1, count Y symbols starting from TAG2-T1, and take the first slot (the first slot) after the Y-th symbol (TAG2-T6) as the fourth slot corresponding to TAG2, so as to take this first slot as the BAT of the BWP of the CC belonging to TAG2. And, map T0 to the first time point TAG3-T1 (i.e., the timing start symbol corresponding to TAG3) of the time domain resource corresponding to BWP2 according to at least one of the TA corresponding to TAG1 and the TA corresponding to TAG3 to which the CC to which BWP0 belongs belongs, and then according to the SCS of BWP2, count Y symbols starting from TAG3-T1, and take the first slot (the first slot) after the Y-th symbol (TAG3-T6) as the fourth slot corresponding to TAG3, so as to take this first slot as the BAT of the BWP of the CC belonging to TAG3.

[0188] Example 20: As Figure 6As shown, map T0 (i.e., the seventh symbol) to the second time point TAG2-T2 (i.e., the timing start symbol corresponding to TAG2) of the time domain resource corresponding to BWP1, and then according to the SCS of BWP1, count Y symbols starting from TAG2-T2, and use the first slot after the Yth symbol (TAG2-T6) as the fourth slot corresponding to TAG2, so as to use this first slot as the BAT of the BWP of the CC belonging to TAG2. Moreover, map T0 (i.e., the seventh symbol) to the second time point TAG3-T2 (i.e., the timing start symbol corresponding to TAG3) of the time domain resource corresponding to BWP2, and then according to the SCS of BWP2, count Y symbols starting from TAG3-T2, and use the first slot after the Yth symbol (TAG3-T6) as the fourth slot corresponding to TAG3, so as to use this first slot as the BAT of the BWP of the CC belonging to TAG3.

[0189] It should be noted that the value of Y corresponding to each TAG can be the same or different, and can be specifically determined according to actual usage requirements, which is not limited in the embodiments of the present application.

[0190] In addition, when the CC to which the BWP in the target BWP group belongs belongs to multiple TAGs, the number of TAGs is not limited. For example, there are 2 TAGs, 3 TAGs, 4 TAGs, etc. In the present application, 2 TAGs are taken as an example for illustrative description. The implementation manner for the CC to which the BWP in the target BWP group belongs belonging to other numbers of TAGs is similar to the implementation manner for the CC to which the BWP in the target BWP group belongs belonging to 2 TAGs. To avoid repetition, the present application will not elaborate.

[0191] Case 2: The reference BWP is the second BWP, and this second BWP is the BWP with the smallest SCS in the above-mentioned target BWP group.

[0192] Based on the above Case 2, in one implementation manner, the above-mentioned timing start symbol can be the symbol determined according to the seventh symbol. It can be understood that the above-mentioned timing start symbol can be the symbol corresponding to the mapping position of the seventh symbol on the time domain resource corresponding to the above-mentioned second BWP.

[0193] In another implementation manner, the timing start symbol is the symbol determined according to the seventh symbol and the sixth TA. Among them, the above-mentioned sixth TA can include at least one of the following: the TA corresponding to the fourth TAG, the TA corresponding to the TAG to which the CC to which ACK belongs belongs.

[0194] It can be understood that the above timing start symbol can be the symbol corresponding to the mapping position of the seventh symbol on the time domain resources corresponding to the second BWP minus and / or plus the sixth TA. Or rather, the above timing start symbol can be the symbol corresponding to the mapping position of the seventh symbol on the time domain resources corresponding to the second BWP after moving backward and / or forward by the sixth TA. Among them, moving backward refers to the number of symbols before the mapping position of the seventh symbol on the time domain resources corresponding to the second BWP, and moving forward refers to the number of symbols after the mapping position of the seventh symbol on the time domain resources corresponding to the second BWP. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n is symbol (n - m), and moving forward k symbols from symbol n is symbol (n + k).

[0195] For the example of how to determine the timing start symbol, specifically, reference can be made to the relevant examples of determining the timing start symbol on the time domain resources corresponding to the second CC in the above embodiments. To avoid repetition, it will not be elaborated here.

[0196] It should be noted that based on the above case two, the TAG to which the CC to which the BWP where the ACK is located belongs, the third TAG, and the fourth TAG can be different TAGs or the same TAG, which can be specifically determined according to actual usage requirements, and the embodiments of the present application do not make limitations.

[0197] In addition, the third TAG and the fourth TAG can be different TAGs.

[0198] Optionally, in the above case two, when the target BWP is the above first BWP, and the first BWP can be the BWP with the smallest SCS in the CC belonging to the third TAG, the fourth slot can be the first slot after the eighth symbol on the time domain resources corresponding to the first BWP.

[0199] Optionally, in some embodiments, the above eighth symbol can be the symbol determined according to the fifth slot. Among them, the above fifth slot can be the first slot after the ninth symbol on the time domain resources corresponding to the second BWP, and the ninth symbol can be the Yth symbol after the timing start symbol on the time domain resources corresponding to the second BWP. It can be understood that the above eighth symbol can be the symbol corresponding to the mapping position of the fifth slot (or understood as the first symbol in the fifth slot) on the time domain resources corresponding to the first BWP.

[0200] In some other embodiments, the above eighth symbol can be the symbol determined according to the fifth slot and the seventh TA. Among them, the above seventh TA can include at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the fourth TAG.

[0201] It can be understood that the above-mentioned eighth symbol can be the symbol corresponding to the mapping position of the fifth slot (for example, the first symbol of the fifth slot) on the time-domain resource corresponding to the above-mentioned first BWP minus and / or plus the seventh TA. Or rather, the above-mentioned eighth symbol can be the symbol corresponding to the mapping position of the fifth slot (for example, the first symbol of the fifth slot) on the time-domain resource corresponding to the above-mentioned BWP after moving backward and / or forward by the seventh TA. Among them, moving backward refers to the number of symbols before the mapping position of the fifth slot (for example, the first symbol of the fifth slot) on the time-domain resource corresponding to the above-mentioned first BWP, and moving forward refers to the number of symbols after / next to the mapping position of the fifth slot (for example, the first symbol of the fifth slot) on the time-domain resource corresponding to the above-mentioned first BWP. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n is symbol (n - m), and moving forward k symbols from symbol n is symbol (n + k).

[0202] For the example of how to determine the eighth symbol according to the fifth slot, specifically, reference can be made to the relevant example of determining the second symbol according to the second slot on the time-domain resource corresponding to the first CC in the above-mentioned embodiment. To avoid repetition, it will not be elaborated here.

[0203] In some other embodiments, the above-mentioned eighth symbol can be the symbol determined according to the ninth symbol. Among them, the ninth symbol can be the Yth symbol after the symbol at the timing start point on the time-domain resource corresponding to the second BWP. It can be understood that the above-mentioned eighth symbol can be the symbol corresponding to the mapping position of the ninth symbol on the time-domain resource corresponding to the first BWP.

[0204] In still some other embodiments, the eighth symbol is the symbol determined according to the ninth symbol and the seventh TA. Among them, the seventh TA can include at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the fourth TAG.

[0205] It can be understood that the above eighth symbol can be the symbol corresponding to the mapping position of the ninth symbol on the time-domain resource corresponding to the above first BWP minus and / or plus the seventh TA. Or rather, the above eighth symbol can be the symbol corresponding to the mapping position of the ninth symbol on the time-domain resource corresponding to the above first BWP moving backward and / or forward by the seventh TA. Among them, moving backward refers to the number of symbols before the mapping position of the ninth symbol on the time-domain resource corresponding to the above first BWP, and moving forward refers to the number of symbols after / next to the mapping position of the ninth symbol on the time-domain resource corresponding to the above first BWP. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n results in symbol (n - m), and moving forward k symbols from symbol n results in symbol (n + k).

[0206] For the example of how to determine the eighth symbol based on the ninth symbol, specifically, reference can be made to the relevant example in the above embodiment for determining the second symbol based on the third symbol on the time-domain resource corresponding to the first CC. To avoid repetition, it will not be elaborated here.

[0207] In the embodiment of the present application, based on the above situation two, the BAT of the BWP of the CC belonging to the third TAG can be the fourth slot; the BAT of the BWP of the CC belonging to the fourth TAG can be the fifth slot.

[0208] It can be understood that for the above situation two, the communication device can determine the BAT of the BWP of each CC in the third TAG by determining the BAT of the first BWP (the BWP with the smallest SCS in the CC belonging to the third TAG); and determine the BAT of the BWP of each CC in the fourth TAG (the TAG to which the CC to which the second BWP belongs) by determining the BAT of the second BWP (the BWP with the smallest SCS in the target BWP group).

[0209] The following will exemplarily illustrate the above situation two (the reference BWP is the second BWP and the target BWP is the first BWP) with reference to the accompanying drawings.

[0210] Suppose the CC to which the BWP where ACK is located (hereinafter referred to as BWP0) belongs to TAGX, and the CCs to which the BWPs in the target BWP group belong, some belong to TAG2 and some belong to TAG3. If among the CCs belonging to TAG2, the SCS of BWP1 is the smallest, then BWP1 is taken as the common reference BWP for TAG2 and TAG3. Among them, TAGX can be the same as TAG2 or TAG3, or different from both TAG2 and TAG3.

[0211] Example 21: Such as Figure 7As shown, according to at least one of the TA of TAGX to which BWP0 belongs and the TA corresponding to TAG2 of the CC to which BWP0 belongs, map T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) to the first time point T1 (i.e., the timing start symbol) on the time domain resource corresponding to BWP1; then, according to the SCS of BWP1, count Y symbols starting from T1, and take the first slot after the Yth symbol (T6, i.e., the ninth symbol above) as the fourth slot corresponding to TAG2, so as to take this first slot as the BAT of the BWP of the CC belonging to TAG2. And according to at least one of the TA of TAG2 and the TA of TAG3, map T6 (i.e., the ninth symbol above) to T7 (i.e., the eighth symbol above) on the time domain resource corresponding to BWP2 (i.e., the first BWP above) with the minimum SCS in the CC belonging to TAG3, and take the next slot after T7 on the time domain resource corresponding to BWP2 as the first slot of BWP2, so as to take the next slot after T7 as the BAT of the BWP of the CC belonging to TAG3.

[0212] Example 22: As Figure 8 shown, map T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) to the first time point T1 on BWP1 (i.e., the timing start symbol); then, according to the SCS of BWP1, count Y symbols starting from T1, and take the first slot after the Yth symbol (T6, i.e., the ninth symbol above) as the fourth slot corresponding to TAG2, so as to take this first slot as the BAT of the BWP of the CC belonging to TAG2. And according to at least one of the TA of TAG2 and the TA of TAG3, map T6 (i.e., the ninth symbol above) to T7 (i.e., the eighth symbol above) of BWP2 (i.e., the first BWP above) with the minimum SCS in the CC belonging to TAG3, and take the next slot after T7 on the time domain resource corresponding to BWP2 as the first slot of BWP2, so as to take the first slot of this BWP2 as the BAT of the BWP of the CC belonging to TAG3.

[0213] Example 23: As Figure 9As shown, according to at least one of the TA of TAGX where BWP0 is located and the TA corresponding to TAG2, map T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) to the first time point T1 (i.e., the timing start symbol) on the time domain resource corresponding to BWP1; then, according to the SCS of BWP1, count Y symbols starting from T1, and use the first slot after the Yth symbol (T6, i.e., the ninth symbol above) as the fourth slot corresponding to TAG2, thereby using this first slot as the BAT of the BWP of the CC belonging to TAG2. And map T6 (i.e., the ninth symbol above) to T7 (i.e., the eighth symbol above) on the time domain resource corresponding to BWP2 (i.e., the first BWP above) with the minimum SCS in the CC belonging to TAG3, and use the next slot after T7 on the time domain resource corresponding to BWP2 as the first slot of BWP2, thereby using this first slot as the BAT of the BWP of the CC belonging to TAG3.

[0214] Example 24: As Figure 10 As shown, map T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) to the first time point T2 (i.e., the timing start symbol) on the time domain resource corresponding to BWP1; then, according to the SCS of BWP1, count Y symbols starting from T2, and use the first slot after the Yth symbol (T6, i.e., the ninth symbol above) as the fourth slot corresponding to TAG2, thereby using this first slot as the BAT of the BWP of the CC belonging to TAG2. And map T6 (i.e., the ninth symbol above) to T7 (i.e., the eighth symbol above) on the time domain resource corresponding to BWP2 (i.e., the first BWP above) with the minimum SCS in the CC belonging to TAG3, and use the next slot after T7 on the time domain resource corresponding to BWP2 as the first slot of BWP2, thereby using this first slot as the BAT of the BWP of the CC belonging to TAG3.

[0215] Example 25: As Figure 11As shown, according to at least one of the TA of TAGX where BWP0 is located and the TA corresponding to TAG2, map T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) to the first time point T1 (i.e., the timing start symbol) on the time domain resource corresponding to BWP1; then, according to the SCS of BWP1, count Y symbols starting from T1, and take the first slot (i.e., the fifth slot above) after the Y-th symbol (T6, i.e., the ninth symbol above) as the fourth slot corresponding to TAG2, so as to take this first slot as the BAT of the BWP of the CC belonging to TAG2. And according to at least one of the TA of TAG2 and the TA of TAG3 (or without considering TA), map the first slot (i.e., the fifth slot above) after T6 to the time point on the time domain resource corresponding to BWP2 (i.e., the first BWP above) with the smallest SCS in the CC belonging to TAG3, that is, map the first symbol in the first slot after T6 to the symbol position on the time domain resource corresponding to BWP2, and take the next slot after this time point on the time domain resource corresponding to BWP2 as the BAT of the BWP of the CC in TAG3.

[0216] Example 26: As Figure 12 As shown, map T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) to the first time point T2 (i.e., the timing start symbol) on the time domain resource corresponding to BWP1; then, according to the SCS of BWP1, count Y symbols starting from T2, and take the first slot (i.e., the fifth slot above) after the Y-th symbol (T6, i.e., the ninth symbol above) as the fourth slot corresponding to TAG2, so as to take this first slot as the BAT of the BWP of the CC belonging to TAG2. And according to at least one of the TA of TAG2 and the TA of TAG3 (or without considering TA), map the first slot (i.e., the fifth slot above) after T6 to a time point on the time domain resource corresponding to BWP2 (i.e., the first BWP above) with the smallest SCS in the CC belonging to TAG3, that is, map the first symbol in the first slot after T6 to the symbol position on the time domain resource corresponding to BWP2, and take the next slot after this time point on the time domain resource corresponding to BWP2 as the BAT of the BWP of the CC in TAG3.

[0217] Case 3: The reference BWP is the BWP where ACK is located, and the BWP where ACK is located is the BWP in the target BWP group and the BWP with the smallest SCS among the BWPs where ACK is located;

[0218] Optionally, in the above Case 3, the timing start symbol may be the seventh symbol.

[0219] Based on the above Case 3, in a possible implementation, the target BWP may be the BWP where ACK is located. Among them, the fourth slot may be the first slot after Y symbols after the timing start symbol on the time domain resource corresponding to the BWP where ACK is located.

[0220] In the embodiment of the present application, when the target BWP is the BWP where ACK is located, in the target BWP group, the BAT of the BWPs belonging to the same TAG group is the sixth slot.

[0221] Among them, the above sixth slot may be the first slot after the tenth symbol on the time domain resource corresponding to the third BWP, and the third BWP may be the BWP with the smallest SCS in the CC belonging to the same TAG group.

[0222] In one implementation, the above tenth symbol may be a symbol determined according to the fourth slot. It can be understood that the above tenth symbol may be the symbol corresponding to the mapping position of the fourth slot on the time domain resource corresponding to the third BWP. That is to say, the above tenth symbol may be the symbol corresponding to the mapping position of the first symbol of the fourth slot on the time domain resource corresponding to the BWP.

[0223] In another implementation, the tenth symbol is a symbol determined according to the fourth slot and the eighth TA. Among them, the above eighth TA may include at least one of the following: the TA corresponding to the TAG to which the third BWP belongs, the TA corresponding to the TAG to which the BWP where ACK is located belongs.

[0224] It can be understood that the above tenth symbol may be the symbol corresponding to the mapping position of the fourth slot on the time domain resource corresponding to the third BWP minus and / or plus the eighth TA. Or rather, the above tenth symbol may be the symbol corresponding to the mapping position of the fourth slot (such as the first symbol of the fourth slot) on the time domain resource corresponding to the above third BWP after moving backward and / or forward by the eighth TA. Among them, moving backward means the number of symbols before the mapping position of the fourth slot (such as the first symbol of the fourth slot) on the time domain resource corresponding to the third BWP, and moving forward means the number of symbols after the mapping position of the fourth slot (such as the first symbol of the fourth slot) on the time domain resource corresponding to the third BWP. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n is symbol (n - m), and moving forward k symbols from symbol n is symbol (n + k).

[0225] For examples on how to determine the above-mentioned tenth symbol, refer specifically to the example description of determining the fourth symbol in the above embodiments. To avoid repetition, it will not be elaborated here.

[0226] Next, in combination with the accompanying drawings, an implementation manner of the above-mentioned case 3 (where the reference BWP and the target BWP are both the BWP where the ACK is located) will be exemplarily described.

[0227] A possible situation: The CCs to which the BWPs in the target BWP group belong belong to the same TAG.

[0228] Suppose the CC to which the BWP where the ACK is located (hereinafter referred to as BWP0) belongs belongs to TAG1, and the CCs to which the BWPs in the target BWP group belong all belong to TAG2. If among the CCs belonging to TAG2, the SCS of BWP1 (i.e., the above-mentioned third BWP) is the smallest, then BWP1 is used as the BWP for determining the BAT among the CCs belonging to TAG2.

[0229] Example 27: As Figure 13 shown, T0 (the last symbol occupied by the ACK on BWP0, i.e., the seventh symbol) is determined as the timing start symbol. According to the SCS of BWP0, starting from T0, after counting Y symbols, the firstslot after the Yth symbol is used as the fourth slot. Then, according to at least one of the TAs corresponding to TAG1 and TAG2 to which BWP0 belongs (or without considering the TA), this first slot is mapped to a time point on the time domain resource corresponding to BWP1 (i.e., the above-mentioned third BWP), and the next slot after this time point on the time domain resource corresponding to BWP1 is used as the BAT of the BWP of the CC belonging to TAG2.

[0230] Another possible situation: The CCs to which the BWPs in the target BWP group belong belong to different TAGs.

[0231] Suppose the CC to which the BWP where the ACK is located (hereinafter referred to as BWP0) belongs belongs to TAG1, and among the CCs to which the BWPs in the target BWP group belong, some belong to TAG2 and some belong to TAG3. If among the CCs belonging to TAG2, the SCS of BWP1 is the smallest, then BWP1 is used as the third BWP corresponding to TAG2; if among the CCs belonging to TAG3, the SCS of BWP2 is the smallest, then BWP2 is used as the third BWP corresponding to TAG3.

[0232] Example 28: As Figure 14As shown, T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) is determined as the timing start symbol. According to the SCS of BWP0, Y symbols starting from T0, the first slot after the Yth symbol is used as the fourth slot. Then, according to at least one of the TAs corresponding to TAG1 where BWP0 is located and the TA corresponding to TAG2 (or without considering the TA), this first slot is mapped to a time point on the time domain resource corresponding to BWP1 (i.e., the third BWP corresponding to TAG2), and the next slot after this time point on the time domain resource corresponding to BWP1 is used as the BAT of the BWP belonging to the CC of TAG2. And according to at least one of the TAs corresponding to TAG1 where BWP0 is located and the TA corresponding to TAG3 (or without considering the TA), this first slot is mapped to a time point on the time domain resource corresponding to BWP2 (i.e., the third BWP corresponding to TAG3), and the next slot after this time point on the time domain resource corresponding to BWP2 is used as the BAT of the BWP belonging to the CC of TAG3.

[0233] Based on the above Case 3, in another possible implementation, the target BWP is the first BWP, which is the BWP with the smallest SCS in the third TAG. In this case, the fourth slot can be the first slot after the eleventh symbol on the time domain resource corresponding to the first BWP.

[0234] In one implementation, the above-mentioned eleventh symbol can be the symbol determined according to the twelfth symbol. Among them, the above-mentioned twelfth symbol can be the Yth symbol after the timing start symbol on the time domain resource corresponding to the BWP where ACK is located. It can be understood that the eleventh symbol can be the symbol corresponding to the mapped position of the twelfth symbol on the time domain resource corresponding to the first BWP.

[0235] In another implementation, the above-mentioned eleventh symbol can be the symbol determined according to the twelfth symbol and the fifth TA. Among them, the above-mentioned fifth TA can include at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the TAG to which the BWP where ACK is located belongs.

[0236] It can be understood that the eleventh symbol can be the symbol obtained by subtracting and / or adding the fifth TA from / to the symbol corresponding to the mapping position of the twelfth symbol on the time-domain resources corresponding to the first BWP. Or rather, the above-mentioned eleventh symbol can be the symbol corresponding to the mapping position of the twelfth symbol on the time-domain resources corresponding to the first BWP after moving backward and / or forward by the fifth TA. Among them, moving backward refers to the number of symbols before the mapping position of the twelfth symbol on the time-domain resources corresponding to the first BWP, and moving forward refers to the number of symbols after the mapping position of the twelfth symbol on the time-domain resources corresponding to the first BWP. For example, if the mapping position is at symbol n, moving backward m symbols from symbol n results in symbol (n - m), and moving forward k symbols from symbol n results in symbol (n + k).

[0237] For the relevant examples of how to determine the above-mentioned eleventh symbol, specifically, reference can be made to the example description of determining the fifth symbol in the above-mentioned embodiments. To avoid repetition, it will not be elaborated here.

[0238] Based on the above Case 3, when the target BWP is the first BWP, in the target BWP group, the BAT of the BWP of the CC belonging to the third TAG is the fourth slot.

[0239] Next, with reference to the accompanying drawings, another implementation manner of the above Case 3 (the reference BWP is the BWP where ACK is located, and the target BWP is the first BWP) will be exemplarily described.

[0240] A possible situation: The CCs to which the BWPs in the target BWP group belong are in the same TAG.

[0241] Suppose the CC to which the BWP where ACK is located (hereinafter referred to as BWP0) belongs is in TAG1, and the CCs to which the BWPs in the target BWP group belong are all in TAG2. If among the CCs in TAG2, the SCS of BWP1 (i.e., the above-mentioned third BWP) is the smallest, then BWP1 is used as the BWP for determining the BAT among the CCs in TAG2.

[0242] Example 29: As Figure 15 shown, T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) is determined as the timing start symbol. According to the SCS of BWP0, count Y symbols starting from T0. According to at least one of the TA corresponding to TAG1 and the TA corresponding to TAG2 where BWP0 is located, map the Yth symbol (i.e., the above-mentioned twelfth symbol, denoted as T3) to T4 (i.e., the above-mentioned eleventh symbol) on the time-domain resources corresponding to BWP1, and take the first slot after T4 as the fourth slot, so as to take this first slot as the BAT of the BWP of the CC belonging to TAG2.

[0243] Example 30: As shown Figure 16 in the figure, determine T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) as the timing start symbol. According to the SCS of BWP0, count Y symbols starting from T0, and map the Yth symbol (i.e., the above-mentioned twelfth symbol, denoted as T3) to T5 (i.e., the above-mentioned eleventh symbol) on the time-domain resource corresponding to BWP1, and use the firstslot after T5 as the fourth slot, so as to use this first slot as the BAT of the BWP of the CC belonging to TAG2.

[0244] Another possible situation: The CC to which the BWP in the target BWP group belongs belongs to different TAGs.

[0245] Suppose the CC to which the BWP where ACK is located (hereinafter referred to as BWP0) belongs belongs to TAG1, and the CCs to which the BWPs in the target BWP group belong, some belong to TAG2 and some belong to TAG3. If among the CCs belonging to TAG2, the SCS of BWP1 is the smallest, then use BWP1 as the target BWP corresponding to TAG2; among the CCs belonging to TAG3, the SCS of BWP2 is the smallest, then use BWP2 as the target BWP corresponding to TAG3.

[0246] Example 31: As shown Figure 17 in the figure, determine T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) as the timing start symbol. According to the SCS of BWP0, count Y symbols starting from T0. Then, according to at least one of the TAs corresponding to TAG1 and the TA corresponding to TAG2 where BWP0 is located, map the Yth symbol (i.e., the above-mentioned twelfth symbol, denoted as T3) to TAG2-T4 (i.e., the eleventh symbol corresponding to TAG2) on the time-domain resource corresponding to BWP1, and use the firstslot after TAG2-T4 as the fourth slot, so as to use this first slot as the BAT of the BWP of the CC belonging to TAG2. And according to at least one of the TAs corresponding to TAG1 and the TA corresponding to TAG3 where BWP0 is located, map the Yth symbol (i.e., the above-mentioned twelfth symbol, denoted as T3) to TAG3-T4 (i.e., the eleventh symbol corresponding to TAG3) on the time-domain resource corresponding to BWP2, and use the firstslot after TAG3-T4 as the fourth slot, so as to use this first slot as the BAT of the BWP of the CC belonging to TAG3.

[0247] Example 32: As shown Figure 18As shown, T0 (the last symbol occupied by ACK on BWP0, i.e., the seventh symbol) is determined as the timing start symbol, and according to the SCS of BWP0, count Y symbols starting from T0. Then, map the Yth symbol (i.e., the above-mentioned twelfth symbol, denoted as T3) to TAG2 - T4 (i.e., the eleventh symbol corresponding to TAG2) on the time domain resource corresponding to BWP1, and use the first slot after TAG2 - T5 as the fourth slot, so as to use this first slot as the BAT of the BWP of the CC belonging to TAG2. And map the Yth symbol (i.e., the above-mentioned twelfth symbol, denoted as T3) to TAG3 - T5 (i.e., the eleventh symbol corresponding to TAG3) on the time domain resource corresponding to BWP2, and use the first slot after TAG3 - T5 as the fourth slot, so as to use this first slot as the BAT of the BWP of the CC belonging to TAG3.

[0248] In the beam application time determination method provided by the embodiments of the present application, since the BWPs of the CCs belonging to one TAG have a certain correlation relationship in the time domain (such as the same SCS or the SCS being in a multiple relationship), therefore, in the case where the CCs to which the BWPs in the target BWP group belong to different TAGs or the TAGs to which the CCs to which the BWPs in the target BWP group belong are different from the TAG to which the CC to which the ACK - located BWP belongs, by determining the timing start symbol corresponding to the reference BWP, and determining the first slot corresponding to the target BWP, and according to the first slot, determining the BAT of the BWP of the CC belonging to each TAG in the target BWP group, it is possible to make the beam effective times of the BWPs of the CCs belonging to the same TAG in the target BWP group consistent, that is, it is possible to align the beams of the BWPs of the CCs belonging to the same TAG, so that data transmission can be correctly performed.

[0249] It should be noted that for the beam application time determination method provided by the embodiments of the present application, the execution subject may be a beam application time determination device, or a control module in the beam application time determination device for executing the beam application time determination method. In the embodiments of the present application, taking the BAT determination as an example to execute the beam application time determination method, the beam application time determination device provided by the embodiments of the present application is described.

[0250] As Figure 20As shown in the figure, an embodiment of the present application provides a beam application time determination device 400. The beam application time determination device 400 includes a determination module 401. The determination module 401 is configured to determine a timing start symbol corresponding to a reference CC according to a first symbol, where the first symbol is the last symbol occupied by the ACK of the beam indication information; and determine a first slot corresponding to a target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC belonging to the first TAG in the target CC group; and determine the BAT of the CC belonging to each TAG in the target CC group according to the first slot.

[0251] Optionally, the reference CC is the CC where the ACK is located, the first CC, or the second CC belonging to the second TAG in the target CC group.

[0252] Optionally, the reference CC is the first CC, and the first CC is the CC with the smallest subcarrier spacing SCS in the first TAG; the timing start symbol is the symbol determined according to the first symbol; or the timing start symbol is the symbol determined according to the first symbol and the first time advance TA; where the first TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

[0253] Optionally, the target CC is the first CC; the first slot is the first slot after Y symbols after the timing start symbol on the time domain resource corresponding to the first CC.

[0254] Optionally, for the CC belonging to the first TAG in the target CC group, the BAT is the first slot.

[0255] Optionally, the reference CC is the second CC, and the second CC is the CC with the smallest SCS in the target CC group; the timing start symbol is the symbol determined according to the first symbol; or the timing start symbol is the symbol determined according to the first symbol and the second TA; where the second TA includes at least one of the following: the TA corresponding to the second TAG, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

[0256] Optionally, the target CC is the first CC, and the first CC is the CC with the smallest SCS in the first TAG; the first slot is the first slot after the second symbol on the time domain resource corresponding to the first CC.

[0257] Optionally, the second symbol is a symbol determined according to the second slot; or the second symbol is a symbol determined according to the second slot and the third TA; wherein, the second slot is the first slot after the third symbol on the time domain resource corresponding to the second CC, the third symbol is the Yth symbol after the timing start symbol on the time domain resource corresponding to the second CC, and the third TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the second TAG.

[0258] Optionally, the second symbol is a symbol determined according to the third symbol, or the second symbol is a symbol determined according to the third symbol and the third TA; wherein, the third symbol is the Yth symbol after the timing start symbol on the time domain resource corresponding to the second CC, and the third TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the second TAG.

[0259] Optionally, the BAT of the CC belonging to the first TAG is the first slot, and the BAT of the CC belonging to the second TAG is the second slot.

[0260] Optionally, the reference CC is the CC where the ACK is located, and the CC where the ACK is located is the CC with the smallest SCS among the CCs in the target CC group and the CC where the ACK is located; the timing start symbol is the first symbol.

[0261] Optionally, the target CC is the CC where the ACK is located; the first slot is the first slot after Y symbols after the timing start symbol on the time domain resource corresponding to the CC where the ACK is located.

[0262] Optionally, in the target CC group, the BAT of the CCs belonging to the same TAG group is the third slot; wherein, the third slot is the first slot after the fourth symbol on the time domain resource corresponding to the third CC, and the third CC is the CC with the smallest SCS in the same TAG group.

[0263] Optionally, the fourth symbol is a symbol determined according to the first slot; or the fourth symbol is a symbol determined according to the first slot and the fourth TA; wherein, the fourth TA includes at least one of the following: the TA corresponding to the TAG to which the third CC belongs, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

[0264] Optionally, the target CC is the first CC, and the first CC is the CC with the smallest SCS in the first TAG; the first slot is the first slot after the fifth symbol on the time domain resource corresponding to the first CC.

[0265] Optionally, the fifth symbol is a symbol determined according to the sixth symbol; or the fifth symbol is a symbol determined according to the sixth symbol and the first TA; wherein, the sixth symbol is the Yth symbol after the timing start symbol on the time domain resource corresponding to the CC where ACK is located, and the first TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the TAG to which the CC where ACK is located belongs.

[0266] Optionally, in the target CC group, the BAT of the CC belonging to the first TAG is the first slot.

[0267] Optionally, the CCs in the target CC group and the CC where ACK is located belong to at least two TAGs.

[0268] Optionally, the CCs in the target CC group belong to at least two TAGs; the at least two TAGs correspond to the same TCI state pool, or the at least two TAGs correspond to different TCI state pools

[0269] Since the CCs belonging to one TAG have a certain correlation relationship in the time domain (such as the same SCS or the SCS being a multiple relationship), the beam application time determination device provided by the embodiments of the present application, in the case where the CCs in the target CC group belong to different TAGs or the TAGs to which the CCs in the target CC group belong are different from the TAG to which the CC where ACK is located belongs, by determining the timing start symbol corresponding to the reference CC, and determining the first slot corresponding to the target CC, and according to the first slot, determining the BAT of the CCs belonging to each TAG in the target CC group, can make the beam effective times of the CCs belonging to the same TAG in the target CC group consistent, that is, can make the beams of the CCs belonging to the same TAG aligned, so that data transmission can be correctly performed.

[0270] As Figure 20 shown, the embodiments of the present application provide a beam application time determination device 400, and the beam application time determination device 400 includes a determination module 401; the determination module 401 is configured to determine the timing start symbol corresponding to the reference BWP according to the seventh symbol, where the seventh symbol is the last symbol occupied by the ACK of the beam indication information; and determine the fourth slot corresponding to the target BWP according to the timing start symbol, where the target BWP is the BWP where ACK is located or the first BWP in the target BWP group whose belonging carrier unit CC belongs to the third TAG; and determine the BAT of the BWP of the CCs belonging to each TAG in the target BWP group according to the fourth slot.

[0271] Optionally, the reference BWP is the BWP where ACK is located, the first BWP, or the second BWP in the target BWP group whose belonging CC belongs to the fourth TAG.

[0272] Optionally, the reference BWP is the first BWP, and the first BWP is the BWP with the smallest SCS among the CCs belonging to the third TAG; the timing start symbol is the symbol determined according to the seventh symbol; or the timing start symbol is the symbol determined according to the seventh symbol and the fifth TA; where the fifth TA includes at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the TAG to which the CC to which the ACK belongs belongs.

[0273] Optionally, the target BWP is the first BWP; the fourth slot is the first slot after Y symbols after the timing start symbol on the time domain resource corresponding to the first BWP.

[0274] Optionally, in the target BWP group, the BAT of the BWP of the CC belonging to the third TAG is the fourth slot.

[0275] Optionally, the reference BWP is the second BWP, and the second BWP is the BWP with the smallest SCS in the target BWP group; the timing start symbol is the symbol determined according to the seventh symbol; or the timing start symbol is the symbol determined according to the seventh symbol and the sixth TA; where the sixth TA includes at least one of the following: the TA corresponding to the fourth TAG, the TA corresponding to the TAG to which the CC to which the ACK belongs belongs.

[0276] Optionally, the target BWP is the first BWP, and the first BWP is the BWP with the smallest SCS among the CCs belonging to the third TAG; the fourth slot is the first slot after the eighth symbol on the time domain resource corresponding to the first BWP.

[0277] Optionally, the eighth symbol is the symbol determined according to the fifth slot; or the eighth symbol is the symbol determined according to the fifth slot and the seventh TA; where the fifth slot is the first slot after the ninth symbol on the time domain resource corresponding to the second BWP, the ninth symbol is the Yth symbol after the timing start symbol on the time domain resource corresponding to the second BWP, and the seventh TA includes at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the fourth TAG.

[0278] Optionally, the eighth symbol is the symbol determined according to the ninth symbol, or the eighth symbol is the symbol determined according to the ninth symbol and the seventh TA; where the ninth symbol is the Yth symbol after the timing start symbol on the time domain resource corresponding to the second BWP, and the seventh TA includes at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the fourth TAG.

[0279] Optionally, the BAT of the BWP of the CC belonging to the third TAG is the fourth slot, and the BAT of the BWP of the CC belonging to the fourth TAG is the fifth slot.

[0280] Optionally, the reference BWP is the BWP where the ACK is located, and the BWP where the ACK is located is the BWP with the smallest SCS among the BWPs in the target BWP group and the BWP where the ACK is located; the timing start symbol is the seventh symbol.

[0281] Optionally, the target BWP is the BWP where the ACK is located; the fourth slot is the first slot after the Y symbols following the timing start symbol on the time domain resource corresponding to the BWP where the ACK is located.

[0282] Optionally, in the target BWP group, the BAT of the BWP of the CC belonging to the same TAG group is the sixth slot; where the sixth slot is the first slot after the tenth symbol on the time domain resource corresponding to the third BWP, and the third BWP is the BWP with the smallest SCS among the CCs belonging to the same TAG group.

[0283] Optionally, the tenth symbol is the symbol determined according to the fourth slot; or the tenth symbol is the symbol determined according to the fourth slot and the eighth TA; where the eighth TA includes at least one of the following: the TA corresponding to the TAG to which the CC to which the third BWP belongs belongs, the TA corresponding to the TAG to which the CC to which the BWP where the ACK is located belongs belongs.

[0284] Optionally, the target BWP is the first BWP, and the first BWP is the BWP with the smallest SCS among the BWPs included in the CC in the third TAG; the fourth slot is the first slot after the eleventh symbol on the time domain resource corresponding to the first BWP.

[0285] Optionally, the eleventh symbol is the symbol determined according to the twelfth symbol; or the eleventh symbol is the symbol determined according to the twelfth symbol and the fifth TA; where the twelfth symbol is the Yth symbol after the timing start symbol on the time domain resource corresponding to the BWP where the ACK is located, and the fifth TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the TAG to which the CC to which the BWP where the ACK is located belongs belongs.

[0286] Optionally, in the target BWP group, the BAT of the BWP of the CC belonging to the third TAG is the fourth slot.

[0287] Optionally, the CC to which the BWP in the target BWP group belongs and the CC to which the BWP where the ACK is located belongs belong to at least two TAGs.

[0288] Optionally, the CC to which the BWP in the target BWP group belongs belongs to at least two TAGs; the at least two TAGs correspond to the same TCI state pool, or the at least two TAGs correspond to different TCI state pools.

[0289] In the BTA determination device provided in the embodiment of the present application, since the BWPs of the CCs belonging to one TAG have a certain correlation relationship in the time domain (for example, the SCSs are the same or the SCSs are in a multiple relationship), when the CCs to which the BWPs in the target BWP group belong to different TAGs or the TAGs to which the CCs to which the BWPs in the target BWP group belong are different from the TAG to which the CC to which the ACK - located BWP belongs, by determining the timing start symbol corresponding to the reference BWP, determining the first slot corresponding to the target BWP, and determining the BATs of the BWPs of the CCs belonging to each TAG in the target BWP group according to the first slot, the beam effective times of the BWPs of the CCs belonging to the same TAG in the target BWP group can be made consistent, that is, the beams of the BWPs of the CCs belonging to the same TAG can be aligned, so that data transmission can be correctly performed.

[0290] The beam application time determination device in the embodiment of the present application can be a device, a device with an operating system, or an electronic device, or can also be a component, an integrated circuit, or a chip in a terminal. This device or electronic device can be a mobile terminal or a non - mobile terminal. Exemplarily, the mobile terminal can include, but is not limited to, the types of the terminal 11 listed above, and the non - mobile terminal can be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self - service machine, etc., and the embodiment of the present application does not make specific limitations.

[0291] The beam application time determination device provided in the embodiment of the present application can implement each process implemented in the above - mentioned method embodiment and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0292] Optionally, as Figure 21 shown, the embodiment of the present application further provides a communication device 500, including a processor 501, a memory 502, a program or instruction stored on the memory 502 and executable on the processor 501. For example, when the communication device 500 is a terminal, when the program or instruction is executed by the processor 501, it implements each process of the above - mentioned beam application time determination method embodiment and can achieve the same technical effect. When the communication device 500 is a network - side device, when the program or instruction is executed by the processor 501, it implements each process of the above - mentioned beam application time determination method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0293] The embodiment of the present application further provides a terminal, including a processor and a communication interface. The processor is configured to determine a timing start symbol corresponding to a reference CC according to a first symbol, where the first symbol is the last symbol occupied by the ACK of beam indication information; and determine a first slot corresponding to a target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC belonging to the first TAG in the target CC group; and determine the BAT of the CC belonging to each TAG in the target CC group according to the first slot. Alternatively, the processor is configured to determine a timing start symbol corresponding to a reference BWP according to a seventh symbol, where the seventh symbol is the last symbol occupied by the ACK of beam indication information; and determine a fourth slot corresponding to a target BWP according to the timing start symbol, where the target BWP is the BWP where the ACK is located or the first BWP belonging to the third TAG among the carrier units CC to which the target BWP group belongs; and determine the BAT of the BWP of the CC belonging to each TAG in the target BWP group according to the fourth slot. This terminal embodiment corresponds to the above terminal-side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 22 It is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0294] The terminal 100 includes, but is not limited to, at least some components such as a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110.

[0295] Those skilled in the art can understand that the terminal 100 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 110 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 22 The terminal structure shown does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0296] It should be understood that in the embodiments of the present application, the input unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 107 includes a touch panel 1071 and other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 may include two parts: a touch detection device and a touch controller. The other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, power on / off keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated here.

[0297] In the embodiments of the present application, after receiving the downlink data from the network side device, the radio frequency unit 101 sends it to the processor 110 for processing; in addition, it sends the uplink data to the network side device. Generally, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0298] The memory 109 can be used to store software programs or instructions and various data. The memory 109 mainly includes a program or instruction storage area and a data storage area. Among them, the program or instruction storage area can store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 109 may include a high-speed random access memory, and may also include a non-volatile memory. Among them, the non-volatile memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid state storage devices.

[0299] The processor 110 may include one or more processing units; optionally, the processor 110 may integrate an application processor and a modem processor. Among them, the application processor mainly processes the operating system, the user interface, and applications or instructions, etc., and the modem processor mainly processes wireless communications, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 110.

[0300] Among them, the processor 110 is configured to determine a timing start symbol corresponding to a reference CC according to a first symbol, where the first symbol is the last symbol occupied by an ACK of beam indication information; and determine a first slot corresponding to a target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC belonging to a first TAG in a target CC group; and determine the BAT of the CC belonging to each TAG in the target CC group according to the first slot.

[0301] For the terminal provided in the embodiment of the present application, since the CCs belonging to one TAG have a certain correlation relationship in the time domain (for example, the SCSs are the same or the SCSs are in a multiple relationship), when the CCs in the target CC group belong to different TAGs or the TAGs to which the CCs in the target CC group belong are different from the TAG to which the CC where the ACK is located belongs, by determining the timing start symbol corresponding to the reference CC, and determining the first slot corresponding to the target CC, and determining the BAT of the CC belonging to each TAG in the target CC group according to the first slot, the beam effective times of the CCs belonging to the same TAG in the target CC group can be made consistent, that is, the beams of the CCs belonging to the same TAG can be aligned, so that data transmission can be correctly performed.

[0302] Alternatively, the processor 110 is configured to determine a timing start symbol corresponding to a reference BWP according to a seventh symbol, where the seventh symbol is the last symbol occupied by an ACK of beam indication information; and determine a fourth slot corresponding to a target BWP according to the timing start symbol, where the target BWP is the BWP where the ACK is located or the first BWP belonging to a third TAG among the carrier units CCs belonging to a target BWP group; and determine the BAT of the BWP of the CC belonging to each TAG in the target BWP group according to the fourth slot.

[0303] For the terminal provided in the embodiment of the present application, since the BWPs of the CCs belonging to one TAG have a certain correlation relationship in the time domain (for example, the SCSs are the same or the SCSs are in a multiple relationship), when the CCs to which the BWPs in the target BWP group belong belong to different TAGs or the TAGs to which the CCs to which the BWPs in the target BWP group belong are different from the TAG to which the CC where the ACK is located belongs, by determining the timing start symbol corresponding to the reference BWP, and determining the first slot corresponding to the target BWP, and determining the BAT of the BWP of the CC belonging to each TAG in the target BWP group according to the first slot, the beam effective times of the BWPs whose belonging CCs belong to the same TAG in the target BWP group can be made consistent, that is, the beams of the BWPs whose belonging CCs belong to the same TAG can be aligned, so that data transmission can be correctly performed.

[0304] The embodiment of the present application further provides a network-side device, including a processor and a communication interface. The processor is configured to determine a timing start symbol corresponding to a reference CC according to a first symbol, where the first symbol is the last symbol occupied by the ACK of the beam indication information; and determine a first slot corresponding to a target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC belonging to the first TAG in the target CC group; and determine the BAT of the CC belonging to each TAG in the target CC group according to the first slot. Alternatively, the processor is configured to determine a timing start symbol corresponding to a reference BWP according to a seventh symbol, where the seventh symbol is the last symbol occupied by the ACK of the beam indication information; and determine a fourth slot corresponding to a target BWP according to the timing start symbol, where the target BWP is the BWP where the ACK is located or the first BWP belonging to the third TAG among the carrier units CC in the target BWP group; and determine the BAT of the BWP of the CC belonging to each TAG in the target BWP group according to the fourth slot. This embodiment of the network-side device corresponds to the above method embodiment of the network-side device. Each implementation process and implementation manner of the above method embodiment can be applied to this embodiment of the network-side device and can achieve the same technical effect.

[0305] Optionally, the embodiment of the present application further provides a network-side device. As Figure 23 shown, the network-side device 700 includes: an antenna 71, a radio frequency device 72, and a baseband device 73. The antenna 71 is connected to the radio frequency device 72. In the uplink direction, the radio frequency device 72 receives information through the antenna 51 and sends the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72. The radio frequency device 72 processes the received information and then sends it out through the antenna 71.

[0306] The above frequency band processing device may be located in the baseband device 73. The method executed by the network-side device in the above embodiments may be implemented in the baseband device 73. The baseband device 73 includes a processor 74 and a memory 75.

[0307] The baseband device 73 may include, for example, at least one baseband board, and a plurality of chips are provided on the baseband board. As Figure 23 shown, one of the chips is, for example, a processor 74, which is connected to the memory 75 to call a program in the memory 75 and execute the operations of the network-side device shown in the above method embodiments.

[0308] The baseband device 73 may further include a network interface 76 for interacting with the radio frequency device 72. The interface is, for example, a common public radio interface (CPRI for short).

[0309] Specifically, the network-side device in the embodiments of the present invention further includes: instructions or programs stored in the memory 75 and executable on the processor 74. The processor 74 calls the instructions or programs in the memory 75 to execute Figure 20 the methods executed by the modules shown in the figure, and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0310] The embodiments of the present application further provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, each process of the above-mentioned embodiment of the method for determining the beam application time is implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0311] Wherein, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs, etc.

[0312] The embodiments of the present application further provide a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the above-mentioned embodiment of the method for determining the beam application time, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0313] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0314] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be executed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0315] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described example methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal (which can be a mobile phone, computer, server, air conditioner, or network-side device, etc.) to execute the methods described in various embodiments of the present application.

[0316] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A method for determining beam application time, characterized in that, Including: The communication device determines a timing start symbol corresponding to a reference carrier cell CC according to a first symbol, where the first symbol is the last symbol occupied by a response message ACK of beam indication information; The communication device determines a first time slot slot corresponding to a target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC in a target CC group that belongs to a first timing advance group TAG; The communication device determines a beam application time BAT of the CCs in the target CC group that belong to each TAG according to the first slot.

2. The method according to claim 1, wherein The reference CC is the first CC, and the first CC is the CC with the smallest subcarrier spacing SCS in the first TAG; The timing start symbol is a symbol determined according to the first symbol; or The timing start symbol is a symbol determined according to the first symbol and a first timing advance TA; Wherein, the first TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

3. The method according to claim 2, wherein The target CC is the first CC; The first slot is the first slot after Y symbols after the timing start symbol on the time domain resource corresponding to the first CC.

4. The method according to claim 3, characterized in that In the target CC group, the BAT of the CCs that belong to the first TAG is the first slot.

5. The method according to claim 1, characterized in that, The reference CC is a second CC, and the second CC is the CC with the smallest SCS in the target CC group; The timing start symbol is a symbol determined according to the first symbol; Or The timing start symbol is a symbol determined according to the first symbol and a second TA; Wherein, the second TA includes at least one of the following: the TA corresponding to the second TAG, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

6. The method according to claim 5, wherein The target CC is the first CC, and the first CC is the CC with the smallest SCS in the first TAG; The first slot is the first slot after a second symbol on the time domain resource corresponding to the first CC.

7. The method according to claim 6, wherein The second symbol is a symbol determined according to a second slot; or The second symbol is a symbol determined according to the second slot and a third TA; Wherein, the second slot is the first slot after a third symbol on the time domain resource corresponding to the second CC, the third symbol is the Yth symbol after the timing start symbol on the time domain resource corresponding to the second CC, and the third TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the second TAG.

8. The method according to claim 6, wherein The second symbol is a symbol determined according to the third symbol, or The second symbol is a symbol determined according to the third symbol and the third TA; Wherein, the third symbol is the Y-th symbol after the timing start symbol on the time domain resource corresponding to the second CC, and the third TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the second TAG.

9. The method according to any one of claims 6 to 8, characterized in that, The BAT of the CC belonging to the first TAG is the first slot, and the BAT of the CC belonging to the second TAG is the second slot.

10. The method according to claim 1, wherein The reference CC is the CC where the ACK is located, and the CC where the ACK is located is the CC with the smallest SCS among the CCs in the target CC group and the CC where the ACK is located; The timing start symbol is the first symbol.

11. The method according to claim 10, wherein The target CC is the CC where the ACK is located; The first slot is the first slot after Y symbols after the timing start symbol on the time domain resource corresponding to the CC where the ACK is located.

12. The method according to claim 11, wherein In the target CC group, the BAT of the CCs belonging to the same TAG is the third slot; Wherein, the third slot is the first slot after the fourth symbol on the time domain resource corresponding to the third CC, and the third CC is the CC with the smallest SCS in the same TAG.

13. The method according to claim 12, wherein, The fourth symbol is the symbol determined according to the first slot; or The fourth symbol is the symbol determined according to the first slot and the fourth TA; Wherein, the fourth TA includes at least one of the following: the TA corresponding to the TAG to which the third CC belongs, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

14. The method according to claim 10, wherein The target CC is the first CC, and the first CC is the CC with the smallest SCS in the first TAG; The first slot is the first slot after the fifth symbol on the time domain resource corresponding to the first CC.

15. The method according to claim 14, wherein, The fifth symbol is the symbol determined according to the sixth symbol; or The fifth symbol is the symbol determined according to the sixth symbol and the first TA; Wherein, the sixth symbol is the Y-th symbol after the timing start symbol on the time domain resource corresponding to the CC where the ACK is located, and the first TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the TAG to which the CC where the ACK is located belongs.

16. The method according to claim 14 or 15, characterized in that In the target CC group, the BAT of the CCs belonging to the first TAG is the first slot.

17. The method according to claim 1, characterized in that, The CCs in the target CC group and the CC where the ACK is located belong to at least two TAGs.

18. The method according to claim 1, wherein The CCs in the target CC group belong to at least two TAGs; The at least two TAGs correspond to the same transmission configuration indication (TCI) state pool, or the at least two TAGs correspond to different TCI state pools.

19. A method for determining beam application time, characterized in that, Including: The communication device determines the timing start symbol corresponding to the reference bandwidth part (BWP) according to the seventh symbol, and the seventh symbol is the last symbol occupied by the response message ACK of the beam indication information; The communication device determines a fourth time slot (slot) corresponding to the target BWP according to the timing start symbol, where the target BWP is the BWP where the ACK is located or the first BWP in the target BWP group whose carrier cell (CC) belongs to the third timing advance group (TAG); The communication device determines the beam application time (BAT) of the BWP of the CC belonging to each TAG in the target BWP group according to the fourth slot; 20. The method according to claim 19, characterized in that, The reference BWP is the first BWP, and the first BWP is the BWP with the smallest subcarrier spacing (SCS) among the CCs belonging to the third TAG; The timing start symbol is the symbol determined according to the seventh symbol; or The timing start symbol is the symbol determined according to the seventh symbol and the fifth timing advance (TA); Wherein, the fifth TA includes at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the TAG to which the CC to which the BWP where the ACK is located belongs; 21. The method according to claim 20, wherein The target BWP is the first BWP; The fourth slot is the first slot after Y symbols after the timing start symbol on the time domain resource corresponding to the first BWP; 22. The method according to claim 21, wherein In the target BWP group, the BAT of the BWP of the CC belonging to the third TAG is the fourth slot; 23. The method according to claim 19, wherein The reference BWP is the second BWP, and the second BWP is the BWP with the smallest SCS in the target BWP group; The timing start symbol is the symbol determined according to the seventh symbol; Or The timing start symbol is the symbol determined according to the seventh symbol and the sixth TA; Wherein, the sixth TA includes at least one of the following: the TA corresponding to the fourth TAG, the TA corresponding to the TAG to which the CC to which the BWP where the ACK is located belongs; 24. The method according to claim 23, wherein The target BWP is the first BWP, and the first BWP is the BWP with the smallest SCS among the CCs belonging to the third TAG; The fourth slot is the first slot after the eighth symbol on the time domain resource corresponding to the first BWP; 25. The method according to claim 24, wherein The eighth symbol is the symbol determined according to the fifth slot; or The eighth symbol is the symbol determined according to the fifth slot and the seventh TA; Wherein, the fifth slot is the first slot after the ninth symbol on the time domain resource corresponding to the second BWP, the ninth symbol is the Y-th symbol after the timing start symbol on the time domain resource corresponding to the second BWP, and the seventh TA includes at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the fourth TAG; 26. The method according to claim 24, wherein The eighth symbol is the symbol determined according to the ninth symbol, or The eighth symbol is the symbol determined according to the ninth symbol and the seventh TA; Wherein, the ninth symbol is the Y-th symbol after the timing start symbol on the time domain resource corresponding to the second BWP, and the seventh TA includes at least one of the following: the TA corresponding to the third TAG, the TA corresponding to the fourth TAG; 27. The method according to any one of claims 24 to 26, characterized in that, The BAT of the BWP of the CC belonging to the third TAG is the fourth slot, and the BAT of the BWP of the CC belonging to the fourth TAG is the fifth slot.

28. The method according to claim 19, wherein The reference BWP is the BWP where the ACK is located, and the BWP where the ACK is located is the BWP with the smallest SCS among the BWPs in the target BWP group and the BWP where the ACK is located; The timing start symbol is the seventh symbol.

29. The method according to claim 28, wherein The target BWP is the BWP where the ACK is located; The fourth slot is the first slot after Y symbols after the timing start symbol on the time domain resource corresponding to the BWP where the ACK is located.

30. The method according to claim 29, wherein In the target BWP group, the BAT of the BWP of the CC belonging to the same TAG is the sixth slot; Among them, the sixth slot is the first slot after the tenth symbol on the time domain resource corresponding to the third BWP, and the third BWP is the BWP with the smallest SCS among the CCs belonging to the same TAG.

31. The method according to claim 30, wherein, The tenth symbol is the symbol determined according to the fourth slot; or The tenth symbol is the symbol determined according to the fourth slot and the eighth TA; Among them, the eighth TA includes at least one of the following: the TA corresponding to the TAG to which the CC to which the third BWP belongs belongs, the TA corresponding to the TAG to which the CC to which the BWP where the ACK is located belongs.

32. The method according to claim 28, wherein The target BWP is the first BWP, and the first BWP is the BWP with the smallest SCS among the BWPs included in the CC in the third TAG; The fourth slot is the first slot after the eleventh symbol on the time domain resource corresponding to the first BWP.

33. The method according to claim 32, wherein, The eleventh symbol is the symbol determined according to the twelfth symbol; or The eleventh symbol is the symbol determined according to the twelfth symbol and the fifth TA; Among them, the twelfth symbol is the Yth symbol after the timing start symbol on the time domain resource corresponding to the BWP where the ACK is located, and the fifth TA includes at least one of the following: the TA corresponding to the first TAG, the TA corresponding to the TAG to which the CC to which the BWP where the ACK is located belongs.

34. The method according to claim 32 or 33, characterized in that, In the target BWP group, the BAT of the BWP of the CC belonging to the third TAG is the fourth slot.

35. The method according to claim 19, wherein The CCs to which the BWPs in the target BWP group belong and the CC to which the BWP where the ACK is located belongs belong to at least two TAGs.

36. The method according to claim 19, wherein, The CCs to which the BWPs in the target BWP group belong to at least two TAGs; The at least two TAGs correspond to the same transmission configuration indication TCI state pool, or the at least two TAGs correspond to different TCI state pools.

37. A beam application time determination device, characterized in that, Including: A determination module, configured to determine a timing start symbol corresponding to a reference carrier cell CC according to a first symbol, where the first symbol is the last symbol occupied by a response message ACK of beam indication information; and determine a first time slot slot corresponding to a target CC according to the timing start symbol, where the target CC is the CC where the ACK is located or the first CC in a target CC group that belongs to a first time advance group TAG; and determine a beam application time BAT of the CCs belonging to each TAG in the target CC group according to the first slot.

38. A beam application time determination device, characterized in that, Comprising: A determination module, configured to determine a timing start symbol corresponding to a reference bandwidth part BWP according to a seventh symbol, where the seventh symbol is the last symbol occupied by a response message ACK of beam indication information; and determine a fourth time slot slot corresponding to a target BWP according to the timing start symbol, where the target BWP is the BWP where the ACK is located or the first BWP in a target BWP group whose belonging carrier cell CC belongs to a third time advance group TAG; and determine a beam application time BAT of the BWPs of the CCs belonging to each TAG in the target BWP group according to the fourth slot.

39. A communication device, characterized in that, Comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, where when the program or instruction is executed by the processor, the steps of the beam application time determination method according to any one of claims 1 to 36 are implemented.

40. A readable storage medium, characterized in that, A program or instruction is stored on the readable storage medium, where when the program or instruction is executed by a processor, the steps of the beam application time determination method according to any one of claims 1 - 36 are implemented.

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