Frequency domain unit switching method, apparatus, terminal, network side device, and storage medium

Abstract

The present application belongs to the technical field of communications. Disclosed are a frequency domain unit switching method, an apparatus, a terminal, a network side device, and a storage medium. The frequency domain unit switching method in the embodiments of the present application comprises: a terminal sends first information, used for indicating frequency domain unit information supported by the terminal for switching, or a frequency domain unit switching mode supported by the terminal, or switching time information of frequency domain unit switching supported by the terminal, or switching options for frequency domain unit switching supported by the terminal, or the maximum number of frequency domain unit switchings within a first time period supported by the terminal, or information related to a time division multiplexing pattern supported by the terminal, or the position of a switching time for frequency domain unit switching supported by the terminal, or information related to a frequency domain unit of transmission interruption supported by the terminal.

Description

Frequency domain unit switching methods, devices, terminals, network-side equipment, and storage media

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510051403.7, filed on January 13, 2025, entitled “Frequency Domain Unit Switching Method, Apparatus, Terminal, Network Side Device and Storage Medium”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to a frequency domain unit switching method, apparatus, terminal, network-side equipment, and storage medium. Background Technology

[0004] In the development of mobile communication technology, carrier aggregation (CA) has become an important means to improve network capacity and spectrum efficiency. Low-frequency spectrum has good propagation characteristics and can cover a larger area. When users move between urban and rural areas, they often spend more time within the coverage area of ​​low-frequency spectrum. Therefore, the capacity limitations of low-frequency spectrum have a significant impact on user experience. With increasingly scarce spectrum resources, there is growing attention on how to utilize low-frequency spectrum resources more effectively.

[0005] Low-frequency carrier aggregation is considered a potential solution, but original equipment manufacturers (OEMs) face challenges in supporting it, and a related ecosystem has not yet been formed. Given the actual situation of the terminal's RF front-end architecture, a handover-based solution can be considered. However, how to effectively perform handover to improve network capacity and user experience currently lacks a clear solution. Summary of the Invention

[0006] This application provides a frequency domain unit switching method, apparatus, terminal, network-side device, and storage medium to improve network capacity and user experience.

[0007] Firstly, a frequency domain unit switching method is provided, including:

[0008] The terminal sends the first message;

[0009] The first information includes at least one of the following:

[0010] The first indication information indicates the frequency domain unit information supported by the terminal for switching; the second indication information indicates the frequency domain unit switching mode supported by the terminal; the third indication information indicates the switching time information of the frequency domain unit switching supported by the terminal; the fourth indication information indicates the switching options of the frequency domain unit switching supported by the terminal; the fifth indication information indicates the maximum number of frequency domain unit switching supported by the terminal within a first time period; the sixth indication information indicates the relevant information of the time division multiplexing pattern supported by the terminal; the seventh indication information indicates the position of the switching time of the frequency domain unit switching supported by the terminal; and the eighth indication information indicates the relevant information of the frequency domain unit with transmission interruption supported by the terminal.

[0011] Secondly, a frequency domain unit switching method is provided, including:

[0012] The network-side device receives the first information from the terminal;

[0013] The first information includes at least one of the following:

[0014] The first indication information indicates the frequency domain unit information supported by the terminal for switching; the second indication information indicates the frequency domain unit switching mode supported by the terminal; the third indication information indicates the switching time information of the frequency domain unit switching supported by the terminal; the fourth indication information indicates the switching options of the frequency domain unit switching supported by the terminal; the fifth indication information indicates the maximum number of frequency domain unit switching supported by the terminal within a first time period; the sixth indication information indicates the relevant information of the time division multiplexing pattern supported by the terminal; the seventh indication information indicates the position of the switching time of the frequency domain unit switching supported by the terminal; and the eighth indication information indicates the relevant information of the frequency domain unit with transmission interruption supported by the terminal.

[0015] Thirdly, a frequency domain unit switching device is provided, comprising:

[0016] The first sending module is used to send the first information;

[0017] The first information includes at least one of the following:

[0018] The first indication information indicates the frequency domain unit information supported by the terminal for switching; the second indication information indicates the frequency domain unit switching mode supported by the terminal; the third indication information indicates the switching time information of the frequency domain unit switching supported by the terminal; the fourth indication information indicates the switching options of the frequency domain unit switching supported by the terminal; the fifth indication information indicates the maximum number of frequency domain unit switching supported by the terminal within a first time period; the sixth indication information indicates the relevant information of the time division multiplexing pattern supported by the terminal; the seventh indication information indicates the position of the switching time of the frequency domain unit switching supported by the terminal; and the eighth indication information indicates the relevant information of the frequency domain unit with transmission interruption supported by the terminal.

[0019] Fourthly, a frequency domain unit switching device is provided, comprising:

[0020] The first receiving module is used to receive first information from the terminal;

[0021] The first information includes at least one of the following:

[0022] The first indication information indicates the frequency domain unit information supported by the terminal for switching; the second indication information indicates the frequency domain unit switching mode supported by the terminal; the third indication information indicates the switching time information of the frequency domain unit switching supported by the terminal; the fourth indication information indicates the switching options of the frequency domain unit switching supported by the terminal; the fifth indication information indicates the maximum number of frequency domain unit switching supported by the terminal within a first time period; the sixth indication information indicates the relevant information of the time division multiplexing pattern supported by the terminal; the seventh indication information indicates the position of the switching time of the frequency domain unit switching supported by the terminal; and the eighth indication information indicates the relevant information of the frequency domain unit with transmission interruption supported by the terminal.

[0023] Fifthly, a frequency domain unit switching apparatus is provided, the apparatus being configured to perform the steps of the method as described in the first aspect, or to implement the steps of the method as described in the second aspect.

[0024] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0025] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is used to run programs or instructions to implement the steps of the method as described in the first aspect, and the communication interface is used to couple with the processor.

[0026] In an eighth aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0027] In a ninth aspect, a network-side device is provided, including a processor and a communication interface, wherein the processor is used to run programs or instructions to implement the steps of the method as described in the second aspect, and the communication interface is used to couple with the processor.

[0028] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the first aspect, or implement the steps of the method as described in the second aspect.

[0029] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0030] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method as described in the first aspect, or to implement the steps of the method as described in the second aspect.

[0031] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in the first aspect, or to implement the steps of the method as described in the second aspect.

[0032] In this embodiment, the terminal sends first information, which includes at least one of first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, and eighth indication information, for indicating the frequency domain unit switching capabilities supported by the terminal. This enables the network-side device to provide relevant indications for frequency domain unit switching based on the terminal's supported capabilities, ensuring that the frequency domain unit switching indications provided by the network-side device match the terminal's capabilities. This allows the terminal to effectively perform frequency domain unit switching, thereby improving network capacity and user experience. Attached Figure Description

[0033] Figure 1 is a block diagram of a wireless communication system applicable to an embodiment of this application;

[0034] Figure 2 is a schematic diagram of the first frequency band combination in the related technology;

[0035] Figure 3 is a schematic diagram of the second frequency band combination in the related technology;

[0036] Figure 4 is a schematic diagram of the third frequency band combination in the related technology;

[0037] Figure 5 is a schematic diagram of the fourth frequency band combination in the related technology;

[0038] Figure 6 is a schematic diagram of the fifth frequency band combination in the related technology;

[0039] Figure 7 is a schematic diagram of the sixth frequency band combination in the related technology;

[0040] Figure 8 is a flowchart of an implementation method for frequency domain unit switching in an embodiment of this application;

[0041] Figure 9 is a schematic diagram of the position of the switching time in an embodiment of this application;

[0042] Figure 10 is another schematic diagram of the location of the switching time in an embodiment of this application;

[0043] Figure 11 is a flowchart illustrating the implementation of another frequency domain unit switching method in this application embodiment;

[0044] Figure 12 is a schematic diagram of the frequency domain unit switching device corresponding to Figure 8 in an embodiment of this application;

[0045] Figure 13 is a schematic diagram of the frequency domain unit switching device corresponding to Figure 11 in an embodiment of this application;

[0046] Figure 14 is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0047] Figure 15 is a schematic diagram of the structure of a terminal in an embodiment of this application;

[0048] Figure 16 is a schematic diagram of the structure of a network-side device according to an embodiment of this application;

[0049] Figure 17 is a schematic diagram of another network-side device in an embodiment of this application. Specific Implementation

[0050] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0051] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0052] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0053] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but 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), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0054] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0055] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (such as 6G), it is also within the scope of protection of this application.

[0056] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0057] To facilitate understanding, the relevant technologies and concepts involved in the embodiments of this application will be introduced first.

[0058] In the development of carrier aggregation technology, operators have always paid close attention to the aggregation of low-frequency band spectrum, and the aggregation of low-frequency band spectrum is involved in both LTE and NR specifications.

[0059] Some operators possess substantial mid-band spectrum resources, approximately 300MHz, which performs well in areas close to base stations. However, these operators have relatively limited low-band spectrum resources, only 15MHz. Although low-band spectrum has a longer propagation distance, its capacity limitations significantly impact user experience. Users spend more time within low-band spectrum coverage areas when moving between urban and rural areas. Low-band spectrum carries a significant amount of traffic in both urban and rural areas. On average, users of these operators spend 15% of their time daily in urban low-band spectrum coverage areas and 50% in rural low-band spectrum coverage areas. Due to low-band spectrum congestion, users often experience slower data rates. For example, the B29 band is widely deployed in a certain country's network. Two operators possess 10MHz of downlink (n29) spectrum nationwide in this country, located in the 700MHz band, covering 83% of the country's population.

[0060] Low-band CA (Carrier Response) is considered a potential solution, but OEM support for low-band CA faces challenges, and a relevant ecosystem has not yet been formed. Considering the actual state of terminal RF front-end architecture in the market, operators have requested the 3rd Generation Partnership Project (3GPP) to study and develop handover-based solutions to accommodate relevant limitations. For example, the proposed solutions would study the following:

[0061] Physical layer procedures and requirements are introduced to achieve low-frequency band carrier aggregation through handover, with the following specific objectives:

[0062] The requirements for the UE are specified, including at least the handover interval (if required) and the corresponding physical layer procedures, to allow handover between the following two scenarios [RAN4, RAN1]:

[0063] Scenario 1: Transmit (Tx) / Receive (Rx) on Frequency Division Duplexing (FDD) carrier 1, and do not receive on Supplementary Downlink (SDL) carrier 2;

[0064] Scenario 2: Reception is performed on SDL carrier 2, and no transmission / reception is performed on FDD carrier 1;

[0065] RAN1 is configured to use a semi-static handover mode based solely on Radio Resource Control (RRC) and coordinates with RAN2 and RAN4 as necessary.

[0066] Specify the handover delay and time mask for carrier switching [RAN4];

[0067] Specify the necessary Radio Resource Management (RRM) requirements [RAN4];

[0068] Define the corresponding UE capabilities [RAN4, RAN2, RAN1];

[0069] Consider the following deployment constraints:

[0070] The carrier frequency in all scenarios is less than 1 GHz;

[0071] The two-carrier network deployments are co-located and synchronized;

[0072] Both carriers are in a Timing Advance Group (TAG);

[0073] The sub-carrier space (SCS) between the two carriers is 15 kHz.

[0074] This handover-based scheme is applicable to the following two situations:

[0075] Scenario 1: The downlink and uplink spectra are close, and some frequency band combinations cannot be paired, such as n12-n29 as shown in Figure 2, n28-n67 as shown in Figure 3, and n26-n106 as shown in Figure 4. In this case, filter-based solutions are not feasible. For example, frequency band n29 is located within the duplex gap of frequency band n12, leaving only a 1MHz filter stopband between the uplink (UL) of n12 and the downlink (DL) of n29. According to current duplexer technology, solutions based on traditional carrier aggregation architectures are not feasible. However, handover-based solutions can utilize the downlink of frequency band n29.

[0076] Scenario 2: Certain frequency band combinations are geographically far apart, such as n5-n29 in Figure 5, n14-n29 in Figure 6, and n29-n71 in Figure 7, which can be aggregated using a single antenna. While this frequency separation typically doesn't pose design challenges, optimizing the radiation performance of both bands simultaneously can be challenging due to their frequency separation. Furthermore, adding antenna elements to support these combinations increases cost and RF architecture complexity. A handover-based approach, however, can utilize the downlink of the n29 band.

[0077] Currently, 3GPP's handover scheme, used for uplink transmission, is called uplink switching. In this scheme, the downlink of all uplink carriers is always available for transmission to the terminal. The terminal can determine whether to perform an uplink switch based on the uplink scheduling received from the downlink. Unlike uplink switching, in downlink switching, the downlink of the downlink carrier is not always available. The terminal cannot monitor all downlink time slots on all component carriers (CCs), necessitating enhancements to relevant protocol specifications to enable downlink switching between different scenarios.

[0078] The relevant technologies and concepts involved in the embodiments of this application have been introduced above. The frequency domain unit switching method provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0079] Referring to Figure 8, which is a flowchart of an implementation method for frequency domain unit switching provided in an embodiment of this application, the method includes the following steps:

[0080] S810: The terminal sends the first message;

[0081] The first piece of information includes at least one of the following:

[0082] The first indication information is used to indicate the frequency domain unit information that the terminal supports for switching;

[0083] The second indication information is used to indicate the frequency domain unit switching modes supported by the terminal;

[0084] The third indication information is used to indicate the switching time information of the frequency domain unit switching supported by the terminal.

[0085] The fourth indication information is used to indicate the switching options for frequency domain unit switching supported by the terminal;

[0086] The fifth indication information is used to indicate the maximum number of frequency domain unit switching supported by the terminal within the first time period;

[0087] The sixth indication information is used to indicate relevant information about the time division multiplexing pattern supported by the terminal;

[0088] The seventh indication information is used to indicate the position of the switching time of the frequency domain unit switching supported by the terminal;

[0089] The eighth indication information is used to indicate relevant information about the frequency domain unit of the transmission interruption supported by the terminal.

[0090] Applying the method provided in the embodiments of this application, the terminal sends first information, which includes at least one of first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, and eighth indication information, for indicating the relevant capabilities of frequency domain unit switching supported by the terminal, so that the network-side device can make relevant indications for frequency domain unit switching according to the relevant capabilities of frequency domain unit switching supported by the terminal, so that the relevant indications for frequency domain unit switching made by the network-side device match the terminal capabilities, enabling the terminal to effectively perform frequency domain unit switching, which helps to improve network capacity and user experience.

[0091] In this embodiment of the application, the terminal may be the terminal 11 shown in FIG1, and the network-side device may be the network-side device 12 shown in FIG1.

[0092] A frequency domain unit may include at least one of a cell, a carrier, a frequency band, and a frequency domain block.

[0093] The terminal can send the first information to the network-side device, and the network-side device can receive the first information from the terminal.

[0094] The first information includes at least one of the following:

[0095] 1) First indication information, which is used to indicate the frequency domain unit information that the terminal supports for switching;

[0096] The first indication information can determine whether the terminal supports frequency domain unit switching, which frequency domain units the terminal supports switching between, or which scenarios the terminal supports switching between. For example, it can support switching from scenario 1 to scenario 2, or from scenario 2 to scenario 1, or from scenario 1 to scenario 3, or from scenario 3 to scenario 1, or from scenario 1 to scenario 4, or from scenario 4 to scenario 1, or from scenario 3 to scenario 4, or from scenario 4 to scenario 3.

[0097] Taking frequency domain units as carriers as an example, scenarios 1-4 are as follows:

[0098] Scenario 1: Carrier 1 has uplink transmission with 1 antenna and downlink reception with 2 antennas (1Tx / 2Rx), while carrier 2 has neither uplink transmission nor downlink reception (0Tx / 0Rx). This can be understood as carrier 1 supporting uplink transmission with a maximum of 1 antenna port and downlink transmission with a maximum of 2 antenna ports, while carrier 2 does not support either uplink or downlink transmission.

[0099] Scenario 2: There is no uplink transmission or downlink reception on carrier 1 (0Tx / 0Rx), and no uplink transmission on carrier 2, only downlink reception with 2 antennas (0Tx / 2Rx); it can be understood that carrier 1 does not support uplink and downlink transmission, and carrier 2 supports downlink transmission with a maximum of 2 antenna ports, but does not support uplink transmission.

[0100] Scenario 3: There is no uplink transmission on carrier 1, but downlink reception with one antenna (0Tx / 1Rx); there is no uplink transmission on carrier 2, but downlink reception with one antenna (0Tx / 1Tx). This can be understood as carrier 1 not supporting uplink transmission, but supporting downlink transmission with a maximum of one antenna port; carrier 2 not supporting uplink transmission, but supporting downlink transmission with a maximum of one antenna port.

[0101] Scenario 4: Carrier 1 has uplink transmission with 1 antenna and no downlink reception (1Tx / 0Rx), while carrier 2 has no uplink transmission and downlink reception with 2 antennas (0Tx / 2Rx). This can be understood as carrier 1 supporting uplink transmission with a maximum of 1 antenna port and not supporting downlink transmission, while carrier 2 does not support uplink transmission but supports downlink transmission with a maximum of 2 antenna ports.

[0102] It should be noted that MRx represents downlink transmission corresponding to a maximum of M antenna ports. For example, if M=1, then MRx represents downlink transmission corresponding to a maximum of 1 antenna port; if M=2, then MRx represents downlink transmission corresponding to a maximum of 2 antenna ports. It can correspond to downlink transmission with 1 antenna port or downlink transmission with 2 antenna ports.

[0103] NTx represents uplink transmission corresponding to a maximum of N antenna ports. For example, if N=1, then NTx represents uplink transmission corresponding to a maximum of 1 antenna port, and if N=2, then NRx represents uplink transmission corresponding to a maximum of 2 antenna ports. It can correspond to uplink transmission with 1 antenna port or uplink transmission with 2 antenna ports.

[0104] Carrier 1 can be a normal downlink (NDL) carrier, and carrier 2 can be a supplementary downlink (SDL) carrier.

[0105] The transition from scene 1 to scene 2, and from scene 2 to scene 1, is represented as follows: NDL 1Tx / 2Rx+SDL 0Tx / 0Rx<->NDL 0Tx / 0Rx+SDL 0Tx / 2Rx;

[0106] The transition from Scene 1 to Scene 3, and from Scene 3 to Scene 1, is represented as follows: NDL 1Tx / 2Rx+SDL 0Tx / 0Rx<->NDL 0Tx / 1Rx+SDL 0Tx / 1Rx;

[0107] This is suitable for situations where the uplink of a Normal Uplink (NUL) and the downlink of a SDL are close in frequency band, requiring that the uplink of the NUL and the downlink of the SDL are not transmitted simultaneously.

[0108] The transition from scene 1 to scene 4, and from scene 4 to scene 1, is represented as follows: NDL 1Tx / 2Rx+SDL 0Tx / 0Rx<->NDL 1Tx / 0Rx+SDL 0Tx / 2Rx);

[0109] This is applicable when the uplink / downlink of NUL and the downlink of SDL are far apart. When the downlink of NUL and the downlink of SDL share the terminal's Rx, it is required that the downlink of NUL and the downlink of SDL are not transmitted at the same time, but the uplink of NUL and the downlink of SDL can be transmitted simultaneously.

[0110] The transition from scene 3 to scene 4, and from scene 4 to scene 3, is represented as follows: NDL 0Tx / 1Rx+SDL 0Tx / 1Rx<->NDL 1Tx / 0Rx+SDL 0Tx / 2Rx;

[0111] This is applicable when the uplink / downlink of NUL and the downlink of SDL are far apart. When the downlink of NUL and the downlink of SDL do not share or share the terminal part Rx, the uplink / downlink of NUL and the downlink of SDL can be transmitted simultaneously.

[0112] 2) Second indication information, which is used to indicate the frequency domain unit switching mode supported by the terminal;

[0113] The second indication information can be used to determine at least one frequency domain unit switching mode supported by the terminal.

[0114] Optionally, the frequency domain unit switching mode may include at least one of the following:

[0115] Switching is performed between a first frequency domain unit and a second frequency domain unit. The first frequency domain unit supports downlink transmission of less than or equal to a first number of antenna ports, and the second frequency domain unit supports downlink transmission of less than or equal to a second number of antenna ports.

[0116] Switching is performed between the third frequency domain unit and the fourth frequency domain unit. The third frequency domain unit supports uplink transmission of less than or equal to the third number of antenna ports, and the fourth frequency domain unit supports uplink transmission of less than or equal to the fourth number of antenna ports.

[0117] Switching is performed between the fifth frequency domain unit and the sixth frequency domain unit. The fifth frequency domain unit supports downlink transmission of less than or equal to the fifth number of antenna ports, and the sixth frequency domain unit supports uplink transmission of less than or equal to the sixth number of antenna ports.

[0118] Switching is performed between the seventh frequency domain unit and the eighth frequency domain unit. The seventh frequency domain unit supports uplink transmission of less than or equal to the seventh number of antenna ports and downlink transmission of less than or equal to the eighth number of antenna ports. The eighth frequency domain unit supports uplink transmission of less than or equal to the ninth number of antenna ports.

[0119] Switching is performed between the ninth frequency domain unit and the tenth frequency domain unit. The ninth frequency domain unit supports uplink transmission of less than or equal to the tenth number of antenna ports and downlink transmission of less than or equal to the eleventh number of antenna ports. The tenth frequency domain unit supports downlink transmission of less than or equal to the twelfth number of antenna ports.

[0120] Switching is performed between the eleventh and twelfth frequency domain units. The eleventh frequency domain unit supports uplink transmission for thirteenth or fewer antenna ports and downlink transmission for fourteenth or fewer antenna ports. The twelfth frequency domain unit supports uplink transmission for fifteenth or fewer antenna ports and downlink transmission for sixteenth or fewer antenna ports.

[0121] A frequency domain element that supports uplink or downlink transmission for a number of antenna ports less than or equal to a certain number can be understood as supporting uplink or downlink transmission for a maximum of that number of antenna ports.

[0122] The first, second, ..., sixteenth quantities can be the same or different, and optionally, can be 2, 4, 6, or 8 respectively. For example, frequency domain unit switching modes include 2Rx-4Rx, 2Rx-2Tx, 4Rx-4Rx, 6Rx-4Rx, 6Rx-8Rx, 2Rx-2Rx-1Tx, etc., all of which indicate that the terminal supports switching between two frequency domain units. Among them, 2Rx-4Rx means that one frequency domain unit supports 2Rx and one frequency domain unit supports 4Rx. Frequency domain unit supporting 2Rx can be understood as supporting downlink transmission of up to 2 antenna ports in that downlink frequency domain unit, and frequency domain unit supporting 4Rx can be understood as supporting downlink transmission of up to 4 antenna ports in that downlink frequency domain unit. 2Rx-2Tx indicates that one frequency domain unit supports 2Rx and another supports 2Tx. Supporting 2Rx in the downlink frequency domain unit can be understood as supporting downlink transmission with a maximum of two antenna ports, and supporting 2Tx in the uplink frequency domain unit can be understood as supporting uplink transmission with a maximum of two antenna ports. 2Rx-2Rx-1Tx indicates that one frequency domain unit supports both 2Rx and 1Tx. Supporting 2Rx and 1Tx in the downlink frequency domain unit can be understood as supporting downlink transmission with a maximum of two antenna ports and uplink transmission with a maximum of one antenna port. Supporting 2Rx in the downlink frequency domain unit can be understood as supporting downlink transmission with a maximum of two antenna ports.

[0123] Optionally, the maximum number of antenna ports supported by at least one of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelfth frequency domain units is determined by the maximum number of transmission layers for Multiple-Input Multiple-Output (MIMO) reported by the terminal. This can be understood as the maximum number of antenna ports supported by these frequency domain units being implicitly determined by the reported maximum number of MIMO transmission layers.

[0124] 3) Third indication information, which is used to indicate the switching time information of the frequency domain unit switching supported by the terminal;

[0125] The switching time information of the frequency domain unit switching supported by the terminal can be determined through the third indication information.

[0126] Optionally, the switching time information for frequency domain unit switching may include at least one of the following:

[0127] The start time of frequency domain unit switching time; the end time of frequency domain unit switching time; the length of frequency domain unit switching time; whether frequency domain unit switching requires or does not require switching time.

[0128] Optionally, when the switching time information of the frequency domain unit includes the switching time required for the frequency domain unit switching, at least one of the following is effective: the start time of the frequency domain unit switching time, the end time of the frequency domain unit switching time, and the length of the frequency domain unit switching time.

[0129] Optionally, when the frequency domain unit switching time information includes a frequency domain unit switching time that does not require a switching time, the start time, end time, and length of the frequency domain unit switching time are all ineffective.

[0130] Optionally, the start time of the frequency domain unit switching time may include at least one of the following:

[0131] The end time of the first transmission before the handover; the start or end time of the time domain unit where the end time of the first transmission before the handover is located; the end time of the second time period indicated by the time division multiplexing (TDM) pattern before the handover; the start or end time of the time domain unit where the end time of the second time period indicated by the time division multiplexing pattern before the handover is located.

[0132] The second time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units before the handover or in the first state; the first transmission includes uplink transmission or downlink transmission.

[0133] Optionally, the end time of the frequency domain unit switching time may include at least one of the following:

[0134] The start time of the second transmission after the handover; the start or end time of the time domain unit in which the start time of the second transmission after the handover is located; the start time of the third time period indicated by the time division multiplexing pattern after the handover; the start or end time of the time domain unit in which the start time of the third time period indicated by the time division multiplexing pattern after the handover.

[0135] The third time period includes the time period indicated by the time division multiplexing pattern for transmission in the switched frequency domain unit or the switched frequency domain unit combination or the second state; the second transmission includes uplink transmission or downlink transmission.

[0136] Optionally, at least one of the time domain units where the end time of the first transmission is located, the time domain units where the end time of the second time period is located, the time domain units where the start time of the second transmission is located, and the time domain units where the start time of the third time period is located are related to the frequency domain unit where the switching time of the frequency domain unit is located.

[0137] Optionally, the time-domain unit may include at least one of orthogonal frequency division multiplexing symbols, sub-time slots, time slots, subframes, and frames.

[0138] Optionally, when the switching time information of the frequency domain unit switching includes the length of the frequency domain unit switching time, the length of the frequency domain unit switching time includes at least one of the length of the first switching time and the length of the second switching time;

[0139] When the length of the frequency domain unit switching time includes the length of the first switching time and the length of the second switching time, the length of the first switching time is greater than or equal to the length of the second switching time.

[0140] This can be understood as the terminal reporting at least one of the lengths of a first handover time and at least one of the lengths of a second handover time, wherein the length of the first handover time is greater than the length of the second handover time, or the length of the first handover time is equal to the length of the second handover time. The length of the second handover time can be 0, meaning there is no handover time. The length of the first handover time can correspond to a relatively long handover time that requires radio frequency realignment, and the length of the second handover time can correspond to a relatively short handover time that does not require radio frequency realignment.

[0141] Optionally, the switching time information of frequency domain unit switching is related to the frequency domain unit switching mode, and different frequency domain unit switching modes correspond to different frequency domain unit switching time information.

[0142] For example, the frequency domain unit switching modes supported by the terminal include 4Rx-2Rx, 2Rx-2Rx, and 4Rx-4Rx. ​​These three frequency domain unit switching modes correspond to different frequency domain unit switching time information.

[0143] Alternatively, it can be understood that the switching time information of frequency domain units is related to the maximum number of multiple-input multiple-output (MIMO) transmission layers supported by each frequency domain unit. If the terminal supports a maximum of 4 MIMO transmission layers for a single carrier component, and the terminal reports a maximum of 2 MIMO transmission layers supported by the frequency domain units before and after the switch, then the terminal can apply the minimum frequency domain unit switching time or does not need to define an additional switching time. Interference between the two RF components can be avoided by turning off the relevant radio frequency (RF) devices.

[0144] Optionally, the switching time information of the frequency domain unit switching supported by the terminal can be implicitly determined by the frequency domain unit switching mode supported by the terminal.

[0145] Optionally, the terminal can report the switching time information corresponding to different frequency domain unit switching modes it supports.

[0146] Optionally, the switching time information of the frequency domain unit switching is applied under the first condition;

[0147] The first condition includes at least one of the following:

[0148] The maximum number of multiple-input multiple-output transmission layers reported by the terminal is greater than or equal to the sum of the number of multiple-input multiple-output transmission layers of the frequency domain units that the terminal supports switching;

[0149] The maximum number of multiple input multiple output transmission layers reported by the terminal is greater than or equal to the sum of the maximum number of multiple input multiple output transmission layers of the frequency domain units before and after the handover configured by the network-side equipment.

[0150] For example, if the terminal supports 4Rx and performs downlink carrier switching in different frequency bands, such as band1 and band2, and the maximum number of multiple input multiple output transmission layers for band1 is 2 and the maximum number of multiple input multiple output transmission layers for band2 is 2, then the terminal supports a shorter / minimum / specific frequency domain unit switching time / frequency domain unit switching does not require switching time.

[0151] For example, if the terminal supports 4Rx, and supports transmission in 4 transport layers of band1 and 4 transport layers of band2, and performs downlink carrier switching between band1 and band2, and the network-side equipment is configured with a maximum number of MIMO transport layers of 2 for band1 and a maximum number of MIMO transport layers of 2 for band2, then the terminal supports a shorter / minimum / specific frequency domain unit switching time / frequency domain unit switching without switching time.

[0152] The 4Rx capability can reuse the maxNumberMIMO-LayersPDSCH parameter in related technologies, which is configured for the component carrier (CC) per cc per band per band combination (FSPC) in the band combination.

[0153] 4) Fourth indication information, which is used to indicate the switching options for frequency domain unit switching supported by the terminal;

[0154] The fourth indication information can be used to determine the switching options for frequency domain unit switching supported by the terminal.

[0155] Optionally, the switching options for frequency domain unit switching include one of the following:

[0156] Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit;

[0157] Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is not performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit.

[0158] This can be understood as the switching option for frequency domain unit switching including option 1, which allows uplink / downlink / uplink / downlink transmission of the frequency division duplex frequency domain unit and downlink transmission of the supplementary downlink frequency domain unit to be performed simultaneously before or after switching;

[0159] Alternatively, the switching options for frequency domain units include option 2, which states that before or after the switching, uplink / downlink / uplink / downlink transmission of the frequency division duplex frequency domain unit and downlink transmission of the supplementary downlink frequency domain unit cannot be performed simultaneously.

[0160] The terminal supports two switching options for frequency domain unit switching: Option 1 and Option 2, which can support switching between different scenarios. For example, Option 1 supports switching between all scenarios, while Option 2 supports switching between Scenario 1 and Scenario 2.

[0161] Optionally, the switching options for frequency domain unit switching include one of the following:

[0162] Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit.

[0163] Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is not performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit.

[0164] Optionally, the primary frequency domain unit can be the primary cell (Pcell), and the secondary frequency domain unit can be the secondary cell (Scell).

[0165] This can be understood as the switching option for frequency domain unit switching including option 3, which allows the uplink / downlink / uplink / downlink transmission of the main frequency domain unit and the uplink / downlink / uplink / downlink transmission of the auxiliary frequency domain unit to be performed simultaneously before or after switching.

[0166] Alternatively, the switching options for frequency domain units include option 4, which states that before or after the switching, the uplink / downlink / uplink / downlink transmission of the primary frequency domain unit and the uplink / downlink / uplink / downlink transmission of the secondary frequency domain unit cannot be performed simultaneously.

[0167] Optionally, the switching options for frequency domain unit switching include one of the following:

[0168] Before or after the handover, the terminal simultaneously receives downlink transmissions; before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions; before or after the handover, the terminal does not simultaneously receive downlink transmissions; before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions.

[0169] This can be understood as follows: the switching options for frequency domain unit switching include option 5, where the terminal can simultaneously receive downlink transmissions before or after the switching; or, the switching options for frequency domain unit switching include option 6, where the terminal can simultaneously receive downlink transmissions and send uplink transmissions before or after the switching; or, the switching options for frequency domain unit switching include option 7, where the terminal cannot simultaneously receive downlink transmissions before or after the switching; or, the switching options for frequency domain unit switching include option 8, where the terminal cannot simultaneously receive downlink transmissions and send uplink transmissions before or after the switching.

[0170] Optionally, the terminal can indicate the switching options for frequency domain unit switching supported by signaling. The signaling name can be one of the following: switched, switchedDL, switchedDLDL, switchedDLUL, dual, dualDL, dualDLUL, and dualDLDL. Here, switched indicates that simultaneous switching is not allowed, and dual indicates that simultaneous switching is allowed.

[0171] 5) Fifth indication information, which is used to indicate the maximum number of frequency domain unit switching supported by the terminal within the first time period;

[0172] The fifth instruction information can determine the maximum number of frequency domain unit switches that the terminal can perform within the first time period.

[0173] The first time period can be a preset time period, such as X time division multiplexing patterns (TDM patterns), subframes, milliseconds (ms), slots, frames, and symbols. X is a positive integer. The time division multiplexing pattern can be obtained through the configuration of network-side equipment and is used to indicate which time is used for frequency division duplex transmission and which time is used to supplement downlink transmission.

[0174] 6) Sixth indication information, which is used to indicate relevant information about the time division multiplexing pattern supported by the terminal;

[0175] The sixth instruction information can be used to determine the relevant information of the time division multiplexing pattern supported by the terminal.

[0176] Optionally, the relevant information of the time-division multiplexing pattern supported by the terminal may include at least one of the following:

[0177] The terminal supports one time-division multiplexing pattern; the terminal supports multiple cascaded time-division multiplexing patterns; the terminal supports the number of cascaded time-division multiplexing patterns; the terminal supports the period of the time-division multiplexing patterns.

[0178] 7) Seventh indication information, which is used to indicate the position of the switching time of the frequency domain unit switching supported by the terminal;

[0179] The seventh indication information can determine the location of the switching time when the terminal supports frequency domain unit switching. Alternatively, it can be understood as the location of the switching time when the terminal expects to perform frequency domain unit switching.

[0180] Optionally, the first information includes the seventh indication information if at least one of the following conditions is met:

[0181] The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the length of the frequency domain unit switching time;

[0182] The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the sum of the length of the frequency domain unit switching time and the extra duration;

[0183] The first transmission includes uplink transmission or downlink transmission, and the second transmission includes uplink transmission or downlink transmission;

[0184] The additional duration is related to at least one of the following: terminal capability, subcarrier spacing, frequency range, and distance from the center frequency of the switched frequency domain unit.

[0185] Specifically, the above conditions may include at least one of the following:

[0186] The interval between the end time of the downlink transmission before the handover and the start time of the downlink transmission after the handover is less than or equal to the length of the frequency domain unit handover time, or less than or equal to the sum of the length of the frequency domain unit handover time and the extra duration.

[0187] The interval between the end time of the uplink transmission before the handover and the start time of the uplink transmission after the handover is less than or equal to the length of the frequency domain unit handover time, or less than or equal to the sum of the length of the frequency domain unit handover time and the extra duration.

[0188] The interval between the end time of the downlink transmission before the handover and the start time of the uplink transmission after the handover is less than or equal to the length of the frequency domain unit handover time, or less than or equal to the sum of the length of the frequency domain unit handover time and the extra duration.

[0189] The interval between the end time of the uplink transmission before the handover and the start time of the downlink transmission after the handover is less than or equal to the length of the frequency domain unit handover time, or less than or equal to the sum of the length of the frequency domain unit handover time and the extra duration.

[0190] In this context, the end time of the first transmission before the handover can be understood as the actual end time of the first transmission before the handover, and the start time of the second transmission after the handover can be understood as the possible start time of the second transmission after the handover.

[0191] Optionally, the location of the switching time for frequency domain unit switching may include at least one of the following:

[0192] On the frequency domain unit before handover; on the frequency domain unit after handover; on the supplementary downlink frequency domain unit; on the auxiliary frequency domain unit; on the auxiliary frequency domain unit participating in handover; on other auxiliary frequency domain units associated with the auxiliary frequency domain unit or the main frequency domain unit being handover; on the frequency domain unit with the lowest priority.

[0193] For example, the switching time of the frequency domain unit is located on the frequency domain unit before the switching, as shown in Figure 9. When switching from carrier 1 to carrier 2, the switching time is located on carrier 1, and when switching from carrier 2 to carrier 1, the switching time is located on carrier 2.

[0194] For example, the switching time of the frequency domain unit switching is located in the secondary frequency domain unit or the supplementary downlink frequency domain unit, as shown in Figure 10. When switching from the main frequency domain unit to the secondary frequency domain unit or the supplementary downlink frequency domain unit, the switching time is located in the secondary frequency domain unit or the supplementary downlink frequency domain unit. When switching from the secondary frequency domain unit or the supplementary downlink frequency domain unit to the main frequency domain unit, the switching time is located in the secondary frequency domain unit or the supplementary downlink frequency domain unit.

[0195] The switching time of frequency domain unit switching is located in the secondary frequency domain unit or the supplementary downlink frequency domain unit, which helps to protect the transmission on the primary frequency domain unit. Optionally, if there is uplink transmission on the primary frequency domain unit, the switching time of frequency domain unit switching is located in the secondary frequency domain unit or the supplementary downlink frequency domain unit.

[0196] Optionally, if the switching time of the frequency domain unit is located on the frequency domain unit after the switching, the configuration of the search space of the control channel on the frequency domain unit after the switching needs to avoid time overlap with the switching time.

[0197] Optionally, if the switching time of the frequency domain unit is located on the frequency domain unit before the switching, then when there is uplink or downlink transmission during the switching time, rate matching or puncturing is performed on the Physical Uplink Shared Channel (PUSCH) or Physical Downlink Shared Channel (PDSCH) to protect the search space of the frequency domain unit after the switching from being affected.

[0198] 8) Eighth indication information, the eighth indication information is used to indicate the relevant information of the frequency domain unit of the transmission interruption supported by the terminal.

[0199] The eighth indication information can determine the relevant information of the frequency domain units supported by the terminal for transmission interruption. Transmission interruption can include at least one of uplink transmission interruption and downlink transmission interruption. Uplink transmission interruption refers to uplink transmission on other frequency domain units that do not involve frequency domain unit switching, and downlink transmission interruption refers to downlink transmission on other frequency domain units that do not involve frequency domain unit switching.

[0200] Optionally, the relevant information of the frequency domain unit of the transmission interruption may include at least one of the following:

[0201] The duration of the transmission interruption; the start time of the transmission interruption includes the start time of the frequency domain unit switching; the start time of the transmission interruption includes the first orthogonal frequency division multiplexing symbol that overlaps or partially overlaps with the start time of the frequency domain unit switching; the transmission interruption is related to the switching time information of the frequency domain unit switching or the position of the switching time of the frequency domain unit switching.

[0202] Optionally, the duration of the transmission interruption is related to the sub-carrier space (SCS) of the frequency domain unit participating in the handover.

[0203] Optionally, if the length of the frequency domain unit switching time or the location of the switching time is defined, then it is determined that there is an impact on the transmission.

[0204] The first piece of information includes at least one of the above, which enables the network-side device to know the terminal's relevant capabilities for frequency domain unit switching. This allows the network-side device to issue relevant instructions for frequency domain unit switching based on the terminal's supported frequency domain unit switching capabilities. The frequency domain unit switching instructions issued by the network-side device match the terminal's capabilities, enabling the terminal to effectively perform frequency domain unit switching, which helps improve network capacity and user experience.

[0205] In some embodiments of this application, the first information may further include ninth indication information, which is used to indicate the frequency domain unit information that the terminal supports aggregation.

[0206] The ninth instruction information can determine whether the terminal supports frequency domain unit aggregation, or which frequency domain units the terminal supports aggregation.

[0207] The first information includes the first indication information and the ninth indication information. Aggregated frequency domain units and switched frequency domain units are indicated within the same band combination, which saves signaling. An example of an Information Elements (IE) is shown below:

[0208] In some embodiments of this application, the method may further include the following steps:

[0209] The terminal sends a second message, which indicates the frequency domain unit information that the terminal supports for aggregation.

[0210] The first information includes first indication information, used to indicate the frequency domain unit information that the terminal supports for handover; the second information is used to indicate the frequency domain unit information that the terminal supports for aggregation. The aggregated frequency domain units and the handover frequency domain units are indicated in different frequency band combinations, which improves the flexibility of indication. An example of the information elements is as follows:

[0211] After the terminal sends the first indication information, the ninth indication information, or the second information to the network-side device, the network-side device can perform the corresponding configuration. Based on the configuration of the network-side device, the terminal can determine the frequency domain unit information for application switching and the frequency domain unit information for application aggregation.

[0212] For example, the terminal reports support for aggregation of frequency domain unit 1 and frequency domain unit 2, support for aggregation of frequency domain unit 2 and frequency domain unit 3, and support for switching between frequency domain unit 1 and frequency domain unit 3. Accordingly, the network-side device is configured to apply aggregation to frequency domain unit 1 and frequency domain unit 2, apply aggregation to frequency domain unit 2 and frequency domain unit 3, and apply switching to frequency domain unit 1 and frequency domain unit 3.

[0213] Alternatively, for example, the terminal reports support for the aggregation of frequency domain unit 1, frequency domain unit 2, and frequency domain unit 3, and support for switching between frequency domain unit 1 and frequency domain unit 3. Accordingly, the network-side device is configured to apply aggregation to frequency domain unit 1 and frequency domain unit 2, apply aggregation to frequency domain unit 2 and frequency domain unit 3, and apply switching to frequency domain unit 1 and frequency domain unit 3.

[0214] Alternatively, for example, the network-side device is configured to apply aggregation in frequency domain unit 1, frequency domain unit 2, and frequency domain unit 3, but the terminal can only apply aggregation in frequency domain unit 1 and frequency domain unit 2, or frequency domain unit 2 and frequency domain unit 3, and apply switching in frequency domain unit 1 and frequency domain unit 3, depending on its own capabilities.

[0215] In some embodiments of this application, the indication granularity of at least one of the first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, eighth indication information, ninth indication information, and second information includes at least one of band pair, band combination, and component carrier in the band of the band combination.

[0216] This can be understood as the granularity of the indication of the various capabilities supported by the terminal being per band pair / per band combination / per FSPC (per cc per band per band combination).

[0217] In some embodiments of this application, the method may further include the following steps:

[0218] The terminal performs the first operation under at least one of the following conditions:

[0219] The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the length of the frequency domain unit switching time;

[0220] The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the sum of the length of the frequency domain unit switching time and the extra duration;

[0221] The first transmission includes uplink transmission or downlink transmission, and the second transmission includes uplink transmission or downlink transmission;

[0222] The additional duration is related to at least one of the following: terminal capability, subcarrier spacing, frequency range, and distance from the center frequency of the switched frequency domain unit;

[0223] The first operation includes at least one of the following:

[0224] Ignore uplink or downlink transmissions of orthogonal frequency division multiplexing symbols whose switching times completely or partially overlap with those of frequency domain unit switching;

[0225] Rate matching or puncturing is performed on physical uplink shared channels, physical downlink shared channels, or orthogonal frequency division multiplexing symbols whose switching times completely or partially overlap with those of frequency domain unit switching.

[0226] Orthogonal frequency division multiplexing symbols that overlap with the switching time of frequency domain unit switching cannot be used for uplink or downlink transmission.

[0227] In the embodiments of this application, if the interval between the end time of the first transmission before the handover and the start time of the second transmission after the handover is less than or equal to the length of the frequency domain unit handover time, or less than or equal to the sum of the length of the frequency domain unit handover time and the extra duration, the terminal may ignore the uplink or downlink transmission of orthogonal frequency division multiplexing symbols that completely or partially overlap with the handover time of the frequency domain unit handover, so as to reduce interference to the transmission of the frequency domain unit before and after the handover. Alternatively, the terminal may perform rate matching or puncturing on the physical uplink shared channel or physical downlink shared channel or orthogonal frequency division multiplexing symbols that completely or partially overlap with the handover time of the frequency domain unit handover, so as to utilize spectrum resources more effectively. Alternatively, the terminal may determine that orthogonal frequency division multiplexing symbols that overlap with the handover time of the frequency domain unit handover cannot be used for uplink or downlink transmission, so as to avoid wasting resources on these symbols.

[0228] In some embodiments of this application, the method may further include the following steps:

[0229] The terminal determines the switching time information of the frequency domain unit switching of the application based on the third information or protocol agreement received from the network side device. The third information is used to indicate at least one of the switching time information and frequency domain unit switching mode.

[0230] In this embodiment, the terminal may send first information to the network-side device. The first information may include third indication information, used to indicate the switching time information of frequency domain unit switching supported by the terminal. The network-side device may, based on or without the third indication information, further configure at least one of the switching time information of radio frequency unit switching and radio frequency unit switching mode, and send the third information to the terminal. The third information is used to indicate at least one of the switching time information of frequency domain unit switching and frequency domain unit switching mode.

[0231] Alternatively, the first information sent by the terminal to the network-side device may not include the third indication information. The network-side device may directly send the third information to the terminal to indicate at least one of the following: the switching time information of the frequency domain unit switching or the frequency domain unit switching mode.

[0232] The terminal receives third information from the network-side device. Based on the third information, it can determine the switching time information of the frequency domain unit switching of the application.

[0233] Alternatively, the terminal can determine the switching time information of the application's frequency domain unit switching according to the protocol agreement, which can include at least one of the switching time information and frequency domain unit switching mode.

[0234] Based on third-party information or protocol agreements received from network-side devices, the terminal can clearly determine the switching time information of the applied frequency domain unit switching in order to effectively perform frequency domain unit switching.

[0235] In some embodiments of this application, the method may further include the following steps:

[0236] The terminal determines the location of the applied frequency domain unit switching time based on at least one of the following: the location of the switching time of the frequency domain unit switching configured by the network-side device, the location of the switching time of the frequency domain unit switching dynamically indicated by the network-side device, and the location of the switching time of the frequency domain unit switching agreed upon by the protocol.

[0237] In this embodiment, the terminal can send first information to the network-side device. The first information may include seventh indication information, used to indicate the position of the switching time for frequency domain unit switching supported by the terminal. The network-side device can configure the position of the switching time for frequency domain unit switching for the terminal based on the seventh indication information, or not based on the seventh indication information, or dynamically indicate the position of the switching time for frequency domain unit switching.

[0238] Alternatively, the first information sent by the terminal to the network-side device may not include the seventh indication information. The network-side device can directly configure the position of the switching time for frequency domain unit switching for the terminal, or dynamically indicate the position of the switching time for frequency domain unit switching.

[0239] The location of the switching time for frequency domain unit switching dynamically indicated by the network-side device can be understood as the network-side device indicating the location of the switching time for frequency domain unit switching in local scheduling, the next scheduling, or the scheduling within a predefined time window through downlink control information (DCI).

[0240] The terminal determines the location of the frequency domain unit switching time of the application based on the location of the switching time of the frequency domain unit switching configured or dynamically indicated by the network-side equipment.

[0241] Alternatively, the location of the frequency domain unit switching time can be agreed upon through a protocol, such as stipulating that the switching time is always within the frequency domain unit before the switch. The terminal can determine the location of the application's frequency domain unit switching time according to the protocol. Optionally, the terminal can determine the location of the application's frequency domain unit switching time according to the protocol if the interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the length of the frequency domain unit switching time, or less than or equal to the sum of the length of the frequency domain unit switching time and the additional duration.

[0242] Based on the configuration, dynamic indications, or protocol agreements of the network-side devices, the terminal can clearly determine the location of the switching time for the applied frequency domain unit, so as to effectively perform frequency domain unit switching.

[0243] Optionally, the network-side device can ensure that the interval between the end time of the first transmission before the handover and the start time of the second transmission after the handover is greater than the length of the frequency domain unit handover time, or greater than the sum of the length of the frequency domain unit handover time and the extra duration.

[0244] Optionally, if the interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is greater than the length of the frequency domain unit switching time, or greater than the sum of the length of the frequency domain unit switching time and the extra duration, then it is not necessary to define the position of the switching time of the frequency domain unit. The position of the application's switching time can be determined by the terminal, whether it is in the frequency domain unit before the switch or the frequency domain unit after the switch.

[0245] In some embodiments of this application, the method may further include the following steps:

[0246] When the terminal performs event- or condition-based handover rather than time-division multiplexing pattern handover, it determines the handover time position of the application's frequency domain unit handover to be on the frequency domain unit before the handover.

[0247] Alternatively, when the terminal switches from a secondary frequency domain unit or supplementary downlink frequency domain unit to a primary frequency domain unit or frequency division duplex frequency domain unit based on an event or condition, it determines that the switching time of the applied frequency domain unit switch is in the secondary frequency domain unit or supplementary downlink frequency domain unit.

[0248] In the embodiments of this application, when the terminal switches based on events or conditions rather than on time-division multiplexing pattern, it can determine that the switching time of the applied frequency domain unit is on the frequency domain unit before the switch. In this way, the terminal can immediately perform the switching operation after the transmission of the current frequency domain unit is completed, which can reduce the switching delay.

[0249] When a terminal switches from a secondary frequency domain unit or supplementary downlink frequency domain unit to a primary frequency domain unit or frequency division duplex frequency domain unit based on an event or condition, it can determine the location of the switching time of the applied frequency domain unit switch on the secondary frequency domain unit or supplementary downlink frequency domain unit, so as to avoid affecting the transmission of the primary frequency domain unit or frequency division duplex frequency domain unit.

[0250] For example, frequency domain cell switching can be triggered based on at least one of the following events or conditions:

[0251] 1) When uplink transmission is triggered, if the terminal needs to transmit at least one of the following: Physical Random Access Channel (PRACH), Status Report (SR), or Configured Grant PUSCH, the terminal needs to perform the above uplink transmission on frequency domain unit 1.

[0252] If the terminal's previous / most recent received transmission before transmitting the aforementioned uplink transmission was in frequency domain unit 2, then the terminal needs to switch from frequency domain unit 1 to frequency domain unit 2 to perform the aforementioned uplink transmission.

[0253] The terminal ignores the semi-static time-division multiplexing pattern and semi-static signaling configuration to activate downlink transmission in frequency domain unit 2;

[0254] If the terminal / media access control (MAC) entity receives an instruction to switch to frequency domain unit 2 while a random access procedure is in progress or before an SR is triggered and transmitted, and this instruction includes an instruction for DCI or higher-layer configuration, the terminal / MAC entity should ignore the instruction, i.e., the terminal / MAC entity should not perform a switch from frequency domain unit 1 to frequency domain unit 2.

[0255] 2) When frequency domain unit 2 is deconfigured, deactivated, or put to sleep, or when the active bandwidth part (BWP) on frequency domain unit 2 becomes dormant, frequency domain unit switching is triggered, and the terminal switches from frequency domain unit 2 to frequency domain unit 1.

[0256] 3) The channel quality of the frequency domain unit is lower than the configured threshold.

[0257] For example, if the channel quality on frequency domain unit 2, such as Reference Signal Received Power (RSRP), Reference Signal Receiving Quality (RSRQ), or Signal to Interference plus Noise Ratio (SINR), is lower than the threshold configured by the network-side equipment, a frequency domain unit handover is triggered, and the terminal switches from frequency domain unit 2 to frequency domain unit 1.

[0258] Optionally, depending on the channel conditions, after the terminal performs a frequency domain unit switch autonomously / spontaneously, it needs to notify the network-side equipment of the switchover via PRACH, SR, or CG PUSCH.

[0259] 4) Timer timeout, for example, a new timer is introduced for frequency domain unit 2. When the timer times out, it triggers a frequency domain unit switch, and the terminal switches from frequency domain unit 2 to frequency domain unit 1.

[0260] When the terminal switches to frequency domain unit 2, the timer is started. If the terminal receives a downlink transmission such as PDSCH and / or DCI on frequency domain unit 2, and the downlink transmission does not carry an indication of frequency domain unit switching (i.e., switching from frequency domain unit 2 to frequency domain unit 1), the timer is restarted. If the downlink transmission received by the terminal on the carrier frequency domain unit 2 carries an indication of frequency domain unit switching, the timer is stopped.

[0261] The timer stops when switching from frequency domain unit 2 to frequency domain unit 1.

[0262] The timer stops when a radio link failure (RLF) or beam failure recovery (BFR) occurs in frequency domain unit 1.

[0263] In some embodiments of this application, the method may further include the following steps:

[0264] The terminal determines the duration of the application's transmission interruption based on the transmission interruption duration configured by the network-side equipment or the protocol agreement.

[0265] In this embodiment, the network-side device can configure the duration of the transmission interruption, or agree on the duration of the transmission interruption through a protocol. The terminal determines the duration of the application's transmission interruption based on the duration of the transmission interruption configured by the network-side device or the protocol agreement. This helps to make the terminal's frequency domain unit switching more orderly and stable.

[0266] Optionally, the number of orthogonal frequency division multiplexing symbols for transmission interruption can be predefined by the protocol based on the subcarrier spacing.

[0267] Optionally, the maximum number of handovers within X time-division multiplexing patterns can be predefined via the protocol.

[0268] In some embodiments of this application, the method may further include the following steps:

[0269] The terminal performs frequency domain unit switching based on the transmission scheduled or activated by the network-side equipment.

[0270] In this embodiment, the network-side device can send a scheduling command or activation command to the terminal, which triggers frequency domain unit switching. Optionally, the network-side device can schedule or activate semi-static transmissions via DCI. The terminal can perform frequency domain unit switching based on the transmission scheduled or activated by the network-side device. Optionally, when the terminal receives the scheduling command or activation command, if the frequency domain unit corresponding to the transmission scheduled by DCI is inconsistent with the frequency domain unit of the current time-division multiplexing pattern, then frequency domain unit switching is performed according to the transmission scheduled or activated by the network-side device.

[0271] Alternatively, it can be understood that the terminal triggers frequency domain unit switching based on transmissions scheduled or activated by network-side devices.

[0272] In some embodiments of this application, the method may further include the following steps:

[0273] When the transmission scheduled or activated by the network-side equipment is completed, the terminal switches back to the frequency domain unit indicated by the time-division multiplexing pattern;

[0274] Alternatively, after triggering the frequency domain unit switch, the terminal starts a timer, and after the timer expires, switches back to the frequency domain unit indicated by the time division multiplexing pattern;

[0275] Alternatively, the terminal may not respond to the network-side device's cancellation command for the frequency domain unit switching during the fourth time period before transmission begins after the frequency domain unit switching.

[0276] Alternatively, the terminal prepares for data transmission during the fourth time period;

[0277] The fourth time period includes the switching time for frequency domain unit switching.

[0278] In this embodiment of the application, after the terminal completes the transmission scheduled or activated by the network-side device, it can switch back to the frequency domain unit indicated by the previous time division multiplexing pattern, or start a timer and switch back to the frequency domain unit indicated by the previous time division multiplexing pattern after the timer expires.

[0279] During the fourth time period after the frequency domain unit switch but before transmission begins, the terminal does not respond to cancellation commands from the network-side equipment to avoid affecting the frequency domain unit switch. The terminal can prepare for data transmission during this fourth time period to improve data transmission reliability.

[0280] Optionally, the network-side device can be configured to allow the terminal to trigger frequency domain unit switching based on DCI-scheduled transmission.

[0281] Corresponding to the above method embodiments, this application embodiment also provides a frequency domain unit switching method, as shown in Figure 11, which includes the following steps:

[0282] S1110: The network-side device receives the first information from the terminal;

[0283] The first piece of information includes at least one of the following:

[0284] The first indication information is used to indicate the frequency domain unit information that the terminal supports for switching;

[0285] The second indication information is used to indicate the frequency domain unit switching modes supported by the terminal;

[0286] The third indication information is used to indicate the switching time information of the frequency domain unit switching supported by the terminal.

[0287] The fourth indication information is used to indicate the switching options for frequency domain unit switching supported by the terminal;

[0288] The fifth indication information is used to indicate the maximum number of frequency domain unit switching supported by the terminal within the first time period;

[0289] The sixth indication information is used to indicate relevant information about the time division multiplexing pattern supported by the terminal;

[0290] The seventh indication information is used to indicate the position of the switching time of the frequency domain unit switching supported by the terminal;

[0291] The eighth indication information is used to indicate relevant information about the frequency domain unit of the transmission interruption supported by the terminal.

[0292] Applying the method provided in the embodiments of this application, the network-side device receives first information from the terminal. The first information includes at least one of first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, and eighth indication information, which is used to indicate the relevant capabilities of frequency domain unit switching supported by the terminal. This enables the network-side device to make relevant indications for frequency domain unit switching based on the relevant capabilities of frequency domain unit switching supported by the terminal, so that the relevant indications for frequency domain unit switching made by the network-side device match the terminal capabilities, enabling the terminal to effectively perform frequency domain unit switching, which helps to improve network capacity and user experience.

[0293] In some embodiments of this application, the first information further includes ninth indication information, which is used to indicate the frequency domain unit information that the terminal supports aggregation.

[0294] In some embodiments of this application, the method further includes:

[0295] The network-side device receives second information from the terminal, which is used to indicate the frequency domain unit information that the terminal supports aggregation.

[0296] In some embodiments of this application, the frequency domain unit switching mode includes at least one of the following:

[0297] Switching is performed between a first frequency domain unit and a second frequency domain unit. The first frequency domain unit supports downlink transmission of less than or equal to a first number of antenna ports, and the second frequency domain unit supports downlink transmission of less than or equal to a second number of antenna ports.

[0298] Switching is performed between the third frequency domain unit and the fourth frequency domain unit. The third frequency domain unit supports uplink transmission of less than or equal to the third number of antenna ports, and the fourth frequency domain unit supports uplink transmission of less than or equal to the fourth number of antenna ports.

[0299] Switching is performed between the fifth frequency domain unit and the sixth frequency domain unit. The fifth frequency domain unit supports downlink transmission of less than or equal to the fifth number of antenna ports, and the sixth frequency domain unit supports uplink transmission of less than or equal to the sixth number of antenna ports.

[0300] Switching is performed between the seventh frequency domain unit and the eighth frequency domain unit. The seventh frequency domain unit supports uplink transmission of less than or equal to the seventh number of antenna ports and downlink transmission of less than or equal to the eighth number of antenna ports. The eighth frequency domain unit supports uplink transmission of less than or equal to the ninth number of antenna ports.

[0301] Switching is performed between the ninth frequency domain unit and the tenth frequency domain unit. The ninth frequency domain unit supports uplink transmission of less than or equal to the tenth number of antenna ports and downlink transmission of less than or equal to the eleventh number of antenna ports. The tenth frequency domain unit supports downlink transmission of less than or equal to the twelfth number of antenna ports.

[0302] Switching is performed between the eleventh and twelfth frequency domain units. The eleventh frequency domain unit supports uplink transmission for thirteenth or fewer antenna ports and downlink transmission for fourteenth or fewer antenna ports. The twelfth frequency domain unit supports uplink transmission for fifteenth or fewer antenna ports and downlink transmission for sixteenth or fewer antenna ports.

[0303] In some embodiments of this application, the maximum number of antenna ports supported by at least one of the first frequency domain unit, second frequency domain unit, third frequency domain unit, fourth frequency domain unit, fifth frequency domain unit, sixth frequency domain unit, seventh frequency domain unit, eighth frequency domain unit, ninth frequency domain unit, tenth frequency domain unit, eleventh frequency domain unit, and twelfth frequency domain unit is determined by the maximum number of multiple-input multiple-output transmission layers reported by the terminal.

[0304] In some embodiments of this application, the switching time information for frequency domain unit switching includes at least one of the following:

[0305] The start time of frequency domain unit switching time; the end time of frequency domain unit switching time; the length of frequency domain unit switching time; whether frequency domain unit switching requires or does not require switching time.

[0306] In some embodiments of this application, the start time of the frequency domain unit switching time includes at least one of the following:

[0307] The end time of the first transmission before the handover; the start or end time of the time domain unit where the end time of the first transmission before the handover is located; the end time of the second time period indicated by the time division multiplexing pattern before the handover; the start or end time of the time domain unit where the end time of the second time period indicated by the time division multiplexing pattern before the handover is located.

[0308] Alternatively, the end time of the frequency domain unit switching time includes at least one of the following:

[0309] The start time of the second transmission after the handover; the start or end time of the time domain unit in which the start time of the second transmission after the handover is located; the start time of the third time period indicated by the time division multiplexing pattern after the handover; the start or end time of the time domain unit in which the start time of the third time period indicated by the time division multiplexing pattern after the handover.

[0310] The second time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units before the handover or in the first state, and the third time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units after the handover or in the second state.

[0311] The first transmission includes either uplink or downlink transmission, and the second transmission includes either uplink or downlink transmission.

[0312] In some embodiments of this application, the switching time information of frequency domain unit switching is applied under the first condition;

[0313] The first condition includes at least one of the following:

[0314] The maximum number of multiple-input multiple-output transmission layers reported by the terminal is greater than or equal to the sum of the number of multiple-input multiple-output transmission layers of the frequency domain units that the terminal supports switching;

[0315] The maximum number of multiple input multiple output transmission layers reported by the terminal is greater than or equal to the sum of the maximum number of multiple input multiple output transmission layers of the frequency domain units before and after the handover configured by the network-side equipment.

[0316] In some embodiments of this application, the switching options for frequency domain unit switching include one of the following:

[0317] Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit;

[0318] Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is not performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit;

[0319] Alternatively, the switching options for frequency domain units include one of the following:

[0320] Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit.

[0321] Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is not performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit;

[0322] Alternatively, the switching options for frequency domain units include one of the following:

[0323] Before or after the handover, the terminal simultaneously receives downlink transmissions; before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions; before or after the handover, the terminal does not simultaneously receive downlink transmissions; before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions.

[0324] In some embodiments of this application, the relevant information of the time-division multiplexing pattern supported by the terminal includes at least one of the following:

[0325] The terminal supports one time-division multiplexing pattern; the terminal supports multiple cascaded time-division multiplexing patterns; the terminal supports the number of cascaded time-division multiplexing patterns; the terminal supports the period of the time-division multiplexing patterns.

[0326] In some embodiments of this application, the location of the switching time for frequency domain unit switching includes one of the following:

[0327] On the frequency domain unit before handover; on the frequency domain unit after handover; on the supplementary downlink frequency domain unit; on the auxiliary frequency domain unit; on the auxiliary frequency domain unit participating in handover; on other auxiliary frequency domain units associated with the auxiliary frequency domain unit or the main frequency domain unit being handover; on the frequency domain unit with the lowest priority.

[0328] In some embodiments of this application, the relevant information of the frequency domain element of the transmission interruption includes at least one of the following:

[0329] The duration of the transmission interruption; the start time of the transmission interruption includes the start time of the frequency domain unit switching; the start time of the transmission interruption includes the first orthogonal frequency division multiplexing symbol that overlaps or partially overlaps with the start time of the frequency domain unit switching; the transmission interruption is related to the switching time information of the frequency domain unit switching or the position of the switching time of the frequency domain unit switching.

[0330] In some embodiments of this application, the method further includes:

[0331] The network-side device sends third information to the terminal, which is used to indicate at least one of the following: switching time information or frequency domain unit switching mode.

[0332] Alternatively, the network-side device sends configuration information about the location of the switching time for frequency domain unit switching to the terminal;

[0333] Alternatively, the network-side device can dynamically indicate the location of the switching time for frequency domain unit switching to the terminal;

[0334] Alternatively, the network-side device may send configuration information about the duration of the transmission interruption to the terminal;

[0335] Alternatively, the network-side device may send a transmission scheduling command or activation command to the terminal, which is used to trigger frequency domain unit switching.

[0336] The frequency domain unit switching method provided in this application embodiment can realize the various processes implemented in the method embodiment shown in Figure 8 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0337] The frequency domain unit switching method provided in this application can be executed by a frequency domain unit switching device. This application uses the execution of the frequency domain unit switching method by a frequency domain unit switching device as an example to illustrate the frequency domain unit switching device provided in this application.

[0338] This application provides a frequency domain unit switching device. As an example, the frequency domain unit switching device can be a communication device or a component in a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be, but is not limited to, the type of terminal 11 listed above, and the network-side device can be, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0339] The frequency domain unit switching device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0340] Specifically, referring to Figure 12, when the frequency domain unit switching device is a terminal or a component within a terminal, the frequency domain unit switching device 1200 includes:

[0341] The first sending module 1210 is used to send the first information;

[0342] The first piece of information includes at least one of the following:

[0343] The first indication information indicates the frequency domain unit information supported by the terminal for switching; the second indication information indicates the frequency domain unit switching mode supported by the terminal; the third indication information indicates the switching time information of the frequency domain unit switching supported by the terminal; the fourth indication information indicates the switching options of the frequency domain unit switching supported by the terminal; the fifth indication information indicates the maximum number of frequency domain unit switching supported by the terminal within a first time period; the sixth indication information indicates the relevant information of the time division multiplexing pattern supported by the terminal; the seventh indication information indicates the position of the switching time of the frequency domain unit switching supported by the terminal; and the eighth indication information indicates the relevant information of the frequency domain unit with transmission interruption supported by the terminal.

[0344] Sending first information, which includes at least one of first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, and eighth indication information, is used to indicate the relevant capabilities of frequency domain unit switching supported by the terminal, so that the network-side device can make relevant indications for frequency domain unit switching based on the relevant capabilities of frequency domain unit switching supported by the terminal, so that the relevant indications for frequency domain unit switching made by the network-side device match the terminal capabilities, enabling effective frequency domain unit switching, which helps to improve network capacity and user experience.

[0345] Optionally, the first information also includes a ninth indication information, which is used to indicate the frequency domain unit information that the terminal supports aggregation.

[0346] Optionally, the first transmitting module 1210 is also used for:

[0347] Send a second message, which indicates that the terminal supports the frequency domain unit information for aggregation.

[0348] Optionally, the indication granularity of at least one of the first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, eighth indication information, ninth indication information, and second information includes at least one of frequency band pairs, frequency band combinations, and component carriers in the frequency bands of the frequency band combination.

[0349] Optionally, the frequency domain unit switching mode includes at least one of the following:

[0350] Switching is performed between a first frequency domain unit and a second frequency domain unit. The first frequency domain unit supports downlink transmission of less than or equal to a first number of antenna ports, and the second frequency domain unit supports downlink transmission of less than or equal to a second number of antenna ports.

[0351] Switching is performed between the third frequency domain unit and the fourth frequency domain unit. The third frequency domain unit supports uplink transmission of less than or equal to the third number of antenna ports, and the fourth frequency domain unit supports uplink transmission of less than or equal to the fourth number of antenna ports.

[0352] Switching is performed between the fifth frequency domain unit and the sixth frequency domain unit. The fifth frequency domain unit supports downlink transmission of less than or equal to the fifth number of antenna ports, and the sixth frequency domain unit supports uplink transmission of less than or equal to the sixth number of antenna ports.

[0353] Switching is performed between the seventh frequency domain unit and the eighth frequency domain unit. The seventh frequency domain unit supports uplink transmission of less than or equal to the seventh number of antenna ports and downlink transmission of less than or equal to the eighth number of antenna ports. The eighth frequency domain unit supports uplink transmission of less than or equal to the ninth number of antenna ports.

[0354] Switching is performed between the ninth frequency domain unit and the tenth frequency domain unit. The ninth frequency domain unit supports uplink transmission of less than or equal to the tenth number of antenna ports and downlink transmission of less than or equal to the eleventh number of antenna ports. The tenth frequency domain unit supports downlink transmission of less than or equal to the twelfth number of antenna ports.

[0355] Switching is performed between the eleventh and twelfth frequency domain units. The eleventh frequency domain unit supports uplink transmission for thirteenth or fewer antenna ports and downlink transmission for fourteenth or fewer antenna ports. The twelfth frequency domain unit supports uplink transmission for fifteenth or fewer antenna ports and downlink transmission for sixteenth or fewer antenna ports.

[0356] Optionally, the maximum number of antenna ports supported by at least one of the first frequency domain unit, second frequency domain unit, third frequency domain unit, fourth frequency domain unit, fifth frequency domain unit, sixth frequency domain unit, seventh frequency domain unit, eighth frequency domain unit, ninth frequency domain unit, tenth frequency domain unit, eleventh frequency domain unit, and twelfth frequency domain unit is determined by the maximum number of multiple-input multiple-output transmission layers reported by the terminal.

[0357] Optionally, the switching time information for frequency domain unit switching includes at least one of the following:

[0358] The start time of frequency domain unit switching time; the end time of frequency domain unit switching time; the length of frequency domain unit switching time; whether frequency domain unit switching requires or does not require switching time.

[0359] Optionally, the start time of the frequency domain unit switching time includes at least one of the following:

[0360] The end time of the first transmission before the handover; the start or end time of the time domain unit where the end time of the first transmission before the handover is located; the end time of the second time period indicated by the time division multiplexing pattern before the handover; the start or end time of the time domain unit where the end time of the second time period indicated by the time division multiplexing pattern before the handover is located.

[0361] Alternatively, the end time of the frequency domain unit switching time includes at least one of the following:

[0362] The start time of the second transmission after the handover; the start or end time of the time domain unit in which the start time of the second transmission after the handover is located; the start time of the third time period indicated by the time division multiplexing pattern after the handover; the start or end time of the time domain unit in which the start time of the third time period indicated by the time division multiplexing pattern after the handover.

[0363] The second time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units before the handover or in the first state, and the third time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units after the handover or in the second state.

[0364] The first transmission includes either uplink or downlink transmission, and the second transmission includes either uplink or downlink transmission.

[0365] Optionally, when the switching time information of the frequency domain unit switching includes the length of the frequency domain unit switching time, the length of the frequency domain unit switching time includes at least one of the length of the first switching time and the length of the second switching time;

[0366] When the length of the frequency domain unit switching time includes the length of the first switching time and the length of the second switching time, the length of the first switching time is greater than or equal to the length of the second switching time.

[0367] Optionally, the switching time information of frequency domain unit switching is related to the frequency domain unit switching mode, and different frequency domain unit switching modes correspond to different frequency domain unit switching time information.

[0368] Optionally, the switching time information of the frequency domain unit switching is applied under the first condition;

[0369] The first condition includes at least one of the following:

[0370] The maximum number of multiple-input multiple-output transmission layers reported by the terminal is greater than or equal to the sum of the number of multiple-input multiple-output transmission layers of the frequency domain units that the terminal supports switching;

[0371] The maximum number of multiple input multiple output transmission layers reported by the terminal is greater than or equal to the sum of the maximum number of multiple input multiple output transmission layers of the frequency domain units before and after the handover configured by the network-side equipment.

[0372] Optionally, the switching options for frequency domain unit switching include one of the following:

[0373] Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit;

[0374] Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is not performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit;

[0375] Alternatively, the switching options for frequency domain units include one of the following:

[0376] Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit.

[0377] Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is not performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit;

[0378] Alternatively, the switching options for frequency domain units include one of the following:

[0379] Before or after the handover, the terminal simultaneously receives downlink transmissions; before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions; before or after the handover, the terminal does not simultaneously receive downlink transmissions; before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions.

[0380] Optionally, the relevant information for the time-division multiplexing pattern supported by the terminal includes at least one of the following:

[0381] The terminal supports one time-division multiplexing pattern; the terminal supports multiple cascaded time-division multiplexing patterns; the terminal supports the number of cascaded time-division multiplexing patterns; the terminal supports the period of the time-division multiplexing patterns.

[0382] Optionally, the first information includes the seventh indication information if at least one of the following conditions is met:

[0383] The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the length of the frequency domain unit switching time;

[0384] The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the sum of the length of the frequency domain unit switching time and the extra duration;

[0385] The first transmission includes uplink transmission or downlink transmission, and the second transmission includes uplink transmission or downlink transmission;

[0386] The additional duration is related to at least one of the following: terminal capability, subcarrier spacing, frequency range, and distance from the center frequency of the switched frequency domain unit.

[0387] Optionally, the location of the switching time for frequency domain unit switching includes one of the following:

[0388] On the frequency domain unit before handover; on the frequency domain unit after handover; on the supplementary downlink frequency domain unit; on the auxiliary frequency domain unit; on the auxiliary frequency domain unit participating in handover; on other auxiliary frequency domain units associated with the auxiliary frequency domain unit or the main frequency domain unit being handover; on the frequency domain unit with the lowest priority.

[0389] Optionally, it also includes a first processing module for:

[0390] The first operation is performed under at least one of the following conditions:

[0391] The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the length of the frequency domain unit switching time;

[0392] The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the sum of the length of the frequency domain unit switching time and the extra duration;

[0393] The first transmission includes uplink transmission or downlink transmission, and the second transmission includes uplink transmission or downlink transmission;

[0394] The additional duration is related to at least one of the following: terminal capability, subcarrier spacing, frequency range, and distance from the center frequency of the switched frequency domain unit;

[0395] The first operation includes at least one of the following:

[0396] Ignore uplink or downlink transmissions of orthogonal frequency division multiplexing symbols whose switching times completely or partially overlap with those of frequency domain unit switching;

[0397] Rate matching or puncturing is performed on physical uplink shared channels, physical downlink shared channels, or orthogonal frequency division multiplexing symbols whose switching times completely or partially overlap with those of frequency domain unit switching.

[0398] Orthogonal frequency division multiplexing symbols that overlap with the switching time of frequency domain unit switching cannot be used for uplink or downlink transmission.

[0399] Optionally, the relevant information of the frequency domain unit of the transmission interruption includes at least one of the following:

[0400] The duration of the transmission interruption; the start time of the transmission interruption includes the start time of the frequency domain unit switching; the start time of the transmission interruption includes the first orthogonal frequency division multiplexing symbol that overlaps or partially overlaps with the start time of the frequency domain unit switching; the transmission interruption is related to the switching time information of the frequency domain unit switching or the position of the switching time of the frequency domain unit switching.

[0401] Optionally, a second processing module is also included, for:

[0402] Based on third information received from the network-side device or a protocol agreement, determine the switching time information of the application's frequency domain unit switching, wherein the third information is used to indicate at least one of the frequency domain unit switching switching time information and the frequency domain unit switching mode; or, determine the position of the application's frequency domain unit switching time based on at least one of the following: the position of the frequency domain unit switching time configured by the network-side device, the position of the frequency domain unit switching time dynamically indicated by the network-side device, and the position of the frequency domain unit switching time agreed upon by the protocol; or, in the case of event- or condition-based switching rather than time-division multiplexing pattern switching, determine that the position of the application's frequency domain unit switching time is on the frequency domain unit before the switching; or, in the case of switching from a secondary frequency domain unit or supplementary downlink frequency domain unit to a primary frequency domain unit or frequency division duplex frequency domain unit based on an event or condition, determine that the position of the application's frequency domain unit switching time is on the secondary frequency domain unit or supplementary downlink frequency domain unit; or, determine the duration of the application's transmission interruption based on the transmission interruption duration configured by the network-side device or a protocol agreement.

[0403] Optionally, the duration of the transmission interruption is related to the subcarrier spacing of the frequency domain units involved in the handover.

[0404] Optionally, a third processing module is also included for:

[0405] Frequency domain unit switching is performed based on transmissions scheduled or activated by network-side devices.

[0406] Optionally, a fourth processing module is also included, for:

[0407] If a transmission scheduled or activated by the network-side device is completed, switch back to the frequency domain unit indicated by the time-division multiplexing pattern; or, after triggering the frequency domain unit switch, start a timer, and after the timer expires, switch back to the frequency domain unit indicated by the time-division multiplexing pattern; or, during the fourth time period before transmission begins after the frequency domain unit switch, do not respond to the network-side device's cancellation command for the frequency domain unit switch; or, prepare for data transmission during the fourth time period.

[0408] The fourth time period includes the switching time for frequency domain unit switching.

[0409] Optionally, the frequency domain unit includes at least one of cell, carrier, frequency band, and frequency domain block.

[0410] Referring to Figure 13, when the frequency domain unit switching device is a network-side device or a component within a network-side device, the frequency domain unit switching device 1300 includes:

[0411] The first receiving module 1310 is used to receive first information from the terminal;

[0412] The first piece of information includes at least one of the following:

[0413] The first indication information indicates the frequency domain unit information supported by the terminal for switching; the second indication information indicates the frequency domain unit switching mode supported by the terminal; the third indication information indicates the switching time information of the frequency domain unit switching supported by the terminal; the fourth indication information indicates the switching options of the frequency domain unit switching supported by the terminal; the fifth indication information indicates the maximum number of frequency domain unit switching supported by the terminal within a first time period; the sixth indication information indicates the relevant information of the time division multiplexing pattern supported by the terminal; the seventh indication information indicates the position of the switching time of the frequency domain unit switching supported by the terminal; and the eighth indication information indicates the relevant information of the frequency domain unit with transmission interruption supported by the terminal.

[0414] The terminal receives first information, which includes at least one of first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, and eighth indication information. This information is used to indicate the relevant capabilities of frequency domain unit switching supported by the terminal, so that the relevant indications of frequency domain unit switching can be given according to the relevant capabilities of frequency domain unit switching supported by the terminal. This makes the relevant indications of frequency domain unit switching match the terminal's capabilities, enabling the terminal to effectively perform frequency domain unit switching, which helps to improve network capacity and user experience.

[0415] Optionally, the first information also includes a ninth indication information, which is used to indicate the frequency domain unit information that the terminal supports aggregation.

[0416] Optionally, the first receiving module 1310 is further configured to:

[0417] The terminal receives second information, which is used to indicate the frequency domain unit information that the terminal supports aggregation.

[0418] Optionally, the frequency domain unit switching mode includes at least one of the following:

[0419] Switching is performed between a first frequency domain unit and a second frequency domain unit. The first frequency domain unit supports downlink transmission of less than or equal to a first number of antenna ports, and the second frequency domain unit supports downlink transmission of less than or equal to a second number of antenna ports.

[0420] Switching is performed between the third frequency domain unit and the fourth frequency domain unit. The third frequency domain unit supports uplink transmission of less than or equal to the third number of antenna ports, and the fourth frequency domain unit supports uplink transmission of less than or equal to the fourth number of antenna ports.

[0421] Switching is performed between the fifth frequency domain unit and the sixth frequency domain unit. The fifth frequency domain unit supports downlink transmission of less than or equal to the fifth number of antenna ports, and the sixth frequency domain unit supports uplink transmission of less than or equal to the sixth number of antenna ports.

[0422] Switching is performed between the seventh frequency domain unit and the eighth frequency domain unit. The seventh frequency domain unit supports uplink transmission of less than or equal to the seventh number of antenna ports and downlink transmission of less than or equal to the eighth number of antenna ports. The eighth frequency domain unit supports uplink transmission of less than or equal to the ninth number of antenna ports.

[0423] Switching is performed between the ninth frequency domain unit and the tenth frequency domain unit. The ninth frequency domain unit supports uplink transmission of less than or equal to the tenth number of antenna ports and downlink transmission of less than or equal to the eleventh number of antenna ports. The tenth frequency domain unit supports downlink transmission of less than or equal to the twelfth number of antenna ports.

[0424] Switching is performed between the eleventh and twelfth frequency domain units. The eleventh frequency domain unit supports uplink transmission for thirteenth or fewer antenna ports and downlink transmission for fourteenth or fewer antenna ports. The twelfth frequency domain unit supports uplink transmission for fifteenth or fewer antenna ports and downlink transmission for sixteenth or fewer antenna ports.

[0425] Optionally, the maximum number of antenna ports supported by at least one of the first frequency domain unit, second frequency domain unit, third frequency domain unit, fourth frequency domain unit, fifth frequency domain unit, sixth frequency domain unit, seventh frequency domain unit, eighth frequency domain unit, ninth frequency domain unit, tenth frequency domain unit, eleventh frequency domain unit, and twelfth frequency domain unit is determined by the maximum number of multiple-input multiple-output transmission layers reported by the terminal.

[0426] Optionally, the switching time information for frequency domain unit switching includes at least one of the following:

[0427] The start time of frequency domain unit switching time; the end time of frequency domain unit switching time; the length of frequency domain unit switching time; whether frequency domain unit switching requires or does not require switching time.

[0428] Optionally, the start time of the frequency domain unit switching time includes at least one of the following:

[0429] The end time of the first transmission before the handover; the start or end time of the time domain unit where the end time of the first transmission before the handover is located; the end time of the second time period indicated by the time division multiplexing pattern before the handover; the start or end time of the time domain unit where the end time of the second time period indicated by the time division multiplexing pattern before the handover is located.

[0430] Alternatively, the end time of the frequency domain unit switching time includes at least one of the following:

[0431] The start time of the second transmission after the handover; the start or end time of the time domain unit in which the start time of the second transmission after the handover is located; the start time of the third time period indicated by the time division multiplexing pattern after the handover; the start or end time of the time domain unit in which the start time of the third time period indicated by the time division multiplexing pattern after the handover.

[0432] The second time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units before the handover or in the first state, and the third time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units after the handover or in the second state.

[0433] The first transmission includes either uplink or downlink transmission, and the second transmission includes either uplink or downlink transmission.

[0434] Optionally, the switching time information of the frequency domain unit switching is applied under the first condition;

[0435] The first condition includes at least one of the following:

[0436] The maximum number of multiple-input multiple-output transmission layers reported by the terminal is greater than or equal to the sum of the number of multiple-input multiple-output transmission layers of the frequency domain units that the terminal supports switching;

[0437] The maximum number of multiple input multiple output transmission layers reported by the terminal is greater than or equal to the sum of the maximum number of multiple input multiple output transmission layers of the frequency domain units before and after the handover configured by the network-side equipment.

[0438] Optionally, the switching options for frequency domain unit switching include one of the following:

[0439] Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit;

[0440] Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is not performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit;

[0441] Alternatively, the switching options for frequency domain units include one of the following:

[0442] Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit.

[0443] Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is not performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit;

[0444] Alternatively, the switching options for frequency domain units include one of the following:

[0445] Before or after the handover, the terminal simultaneously receives downlink transmissions; before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions; before or after the handover, the terminal does not simultaneously receive downlink transmissions; before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions.

[0446] Optionally, the relevant information for the time-division multiplexing pattern supported by the terminal includes at least one of the following:

[0447] The terminal supports one time-division multiplexing pattern; the terminal supports multiple cascaded time-division multiplexing patterns; the terminal supports the number of cascaded time-division multiplexing patterns; the terminal supports the period of the time-division multiplexing patterns.

[0448] Optionally, the location of the switching time for frequency domain unit switching includes one of the following:

[0449] On the frequency domain unit before handover; on the frequency domain unit after handover; on the supplementary downlink frequency domain unit; on the auxiliary frequency domain unit; on the auxiliary frequency domain unit participating in handover; on other auxiliary frequency domain units associated with the auxiliary frequency domain unit or the main frequency domain unit being handover; on the frequency domain unit with the lowest priority.

[0450] Optionally, the relevant information of the frequency domain unit of the transmission interruption includes at least one of the following:

[0451] The duration of the transmission interruption; the start time of the transmission interruption includes the start time of the frequency domain unit switching; the start time of the transmission interruption includes the first orthogonal frequency division multiplexing symbol that overlaps or partially overlaps with the start time of the frequency domain unit switching; the transmission interruption is related to the switching time information of the frequency domain unit switching or the position of the switching time of the frequency domain unit switching.

[0452] Optionally, a second transmitting module is also included, for:

[0453] Send third information to the terminal, the third information being used to indicate at least one of the following: switching time information or frequency domain unit switching mode; or send configuration information of the location of the switching time of the frequency domain unit switching to the terminal; or dynamically indicate the location of the switching time of the frequency domain unit switching to the terminal; or send configuration information of the duration of the transmission interruption to the terminal; or send a transmission scheduling instruction or activation instruction to the terminal, the scheduling instruction or activation instruction being used to trigger the frequency domain unit switching.

[0454] The frequency domain unit switching device provided in this application embodiment can realize the various processes implemented in the method embodiments shown in Figures 8 to 11 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0455] As shown in Figure 14, this application embodiment also provides a communication device 1400, including a processor 1401 and a memory 1402. The memory 1402 stores a program or instructions that can run on the processor 1401. For example, when the communication device 1400 is a terminal, the program or instructions executed by the processor 1401 implement the various steps of the method embodiment shown in Figure 8 above, and achieve the same technical effect. When the communication device 1400 is a network-side device, the program or instructions executed by the processor 1401 implement the various steps of the method embodiment shown in Figure 11 above, and achieve the same technical effect. To avoid repetition, this will not be described again here.

[0456] This application also provides a terminal, including a processor and a communication interface, with the communication interface coupled to the processor. The processor is used to run programs or instructions to implement the steps in the method embodiment shown in FIG8. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal may be the frequency domain unit switching device shown in FIG12.

[0457] Specifically, Figure 15 is a schematic diagram of the structure of a terminal implementing an embodiment of this application.

[0458] The terminal 1500 includes, but is not limited to, at least some of the following components: radio frequency unit 1501, network module 1502, audio output unit 1503, input unit 1504, sensor 1505, display unit 1506, user input unit 1507, interface unit 1508, memory 1509, and processor 1510.

[0459] Those skilled in the art will understand that terminal 1500 may also include a power supply (such as a battery) for powering various components. The power supply may be logically connected to processor 1510 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 15 does not constitute a limitation on 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.

[0460] It should be understood that, in this embodiment, the input unit 1504 may include a graphics processor 15041 and a microphone 15042. The graphics processor 15041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1506 may include a display panel 15061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1507 includes a touch panel 15071 and at least one of other input devices 15072. The touch panel 15071 is also called a touch screen. The touch panel 15071 may include a touch detection device and a touch controller. Other input devices 15072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0461] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1501 can transmit it to the processor 1510 for processing; in addition, the radio frequency unit 1501 can send uplink data to the network-side device. Typically, the radio frequency unit 1501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0462] The memory 1509 can be used to store software programs or instructions, as well as various data. The memory 1509 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1509 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1509 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0463] Processor 1510 may include one or more processing units; optionally, processor 1510 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1510.

[0464] The radio frequency unit 1501 is used to transmit the first information;

[0465] The first piece of information includes at least one of the following:

[0466] The first indication information indicates the frequency domain unit information supported by the terminal for switching; the second indication information indicates the frequency domain unit switching mode supported by the terminal; the third indication information indicates the switching time information of the frequency domain unit switching supported by the terminal; the fourth indication information indicates the switching options of the frequency domain unit switching supported by the terminal; the fifth indication information indicates the maximum number of frequency domain unit switching supported by the terminal within a first time period; the sixth indication information indicates the relevant information of the time division multiplexing pattern supported by the terminal; the seventh indication information indicates the position of the switching time of the frequency domain unit switching supported by the terminal; and the eighth indication information indicates the relevant information of the frequency domain unit with transmission interruption supported by the terminal.

[0467] Sending first information, which includes at least one of first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, and eighth indication information, is used to indicate the relevant capabilities of frequency domain unit switching supported by the terminal, so that the network-side device can make relevant indications for frequency domain unit switching based on the relevant capabilities of frequency domain unit switching supported by the terminal, so that the relevant indications for frequency domain unit switching made by the network-side device match the terminal capabilities, enabling effective frequency domain unit switching, which helps to improve network capacity and user experience.

[0468] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the terminal side method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0469] This application also provides a network-side device, including a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG11. This network-side device embodiment corresponds to the above-described network-side device method embodiment, and all implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0470] Specifically, this application embodiment also provides a network-side device, which may be the frequency domain unit switching device shown in FIG13. As shown in FIG16, the network-side device 1600 includes: an antenna 1601, a radio frequency device 1602, a baseband device 1603, a processor 1604, and a memory 1605. The antenna 1601 is connected to the radio frequency device 1602. In the uplink direction, the radio frequency device 1602 receives information through the antenna 1601 and sends the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes the information to be transmitted and sends it to the radio frequency device 1602, which processes the received information and transmits it through the antenna 1601.

[0471] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1603, which includes a baseband processor.

[0472] The baseband device 1603 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG16. One of the chips is, for example, a baseband processor, which is connected to the memory 1605 via a bus interface to call the program or instructions in the memory 1605 to execute the network-side device operation shown in the above method embodiment.

[0473] The network-side device may also include a network interface 1606, such as a Common Public Radio Interface (CPRI).

[0474] The radio frequency device 1602 is used to receive first information from the terminal;

[0475] The first piece of information includes at least one of the following:

[0476] The first indication information indicates the frequency domain unit information supported by the terminal for switching; the second indication information indicates the frequency domain unit switching mode supported by the terminal; the third indication information indicates the switching time information of the frequency domain unit switching supported by the terminal; the fourth indication information indicates the switching options of the frequency domain unit switching supported by the terminal; the fifth indication information indicates the maximum number of frequency domain unit switching supported by the terminal within a first time period; the sixth indication information indicates the relevant information of the time division multiplexing pattern supported by the terminal; the seventh indication information indicates the position of the switching time of the frequency domain unit switching supported by the terminal; and the eighth indication information indicates the relevant information of the frequency domain unit with transmission interruption supported by the terminal.

[0477] The terminal receives first information, which includes at least one of first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, and eighth indication information. This information is used to indicate the relevant capabilities of frequency domain unit switching supported by the terminal, so that the relevant indications of frequency domain unit switching can be given according to the relevant capabilities of frequency domain unit switching supported by the terminal. This makes the relevant indications of frequency domain unit switching match the terminal's capabilities, enabling the terminal to effectively perform frequency domain unit switching, which helps to improve network capacity and user experience.

[0478] In addition, the network-side device 1600 of this application embodiment also includes: a program or instructions stored in the memory 1605 and executable on the processor 1604. The processor 1604 calls the program or instructions in the memory 1605 to execute the methods executed by each module shown in FIG13 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0479] Specifically, this application also provides a network-side device. As shown in FIG17, the network-side device 1700 includes a processor 1701, a network interface 1702, and a memory 1703. The network-side device may be the frequency domain unit switching device shown in FIG13. The network interface 1702 is, for example, a common public radio interface (CPRI).

[0480] Among them, network interface 1702 is used to receive first information from the terminal;

[0481] The first piece of information includes at least one of the following:

[0482] The first indication information indicates the frequency domain unit information supported by the terminal for switching; the second indication information indicates the frequency domain unit switching mode supported by the terminal; the third indication information indicates the switching time information of the frequency domain unit switching supported by the terminal; the fourth indication information indicates the switching options of the frequency domain unit switching supported by the terminal; the fifth indication information indicates the maximum number of frequency domain unit switching supported by the terminal within a first time period; the sixth indication information indicates the relevant information of the time division multiplexing pattern supported by the terminal; the seventh indication information indicates the position of the switching time of the frequency domain unit switching supported by the terminal; and the eighth indication information indicates the relevant information of the frequency domain unit with transmission interruption supported by the terminal.

[0483] The terminal receives first information, which includes at least one of first indication information, second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, seventh indication information, and eighth indication information. This information is used to indicate the relevant capabilities of frequency domain unit switching supported by the terminal, so that the relevant indications of frequency domain unit switching can be given according to the relevant capabilities of frequency domain unit switching supported by the terminal. This makes the relevant indications of frequency domain unit switching match the terminal's capabilities, enabling the terminal to effectively perform frequency domain unit switching, which helps to improve network capacity and user experience.

[0484] In addition, the network-side device 1700 of this application embodiment also includes: a program or instructions stored in the memory 1703 and executable on the processor 1701. The processor 1701 calls the program or instructions in the memory 1703 to execute the methods executed by each module shown in FIG13 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0485] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0486] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0487] This application embodiment also provides a chip, which 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 the various processes of the above method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0488] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0489] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0490] This application also provides a wireless communication system, including: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the above terminal-side method embodiment, and the network-side device can be used to perform the steps of the above network-side device-side method embodiment.

[0491] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0492] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0493] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A frequency domain unit switching method, comprising: The terminal sends the first message; The first information includes at least one of the following: First indication information, the first indication information is used to indicate the frequency domain unit information that the terminal supports switching; The second indication information is used to indicate the frequency domain unit switching mode supported by the terminal; The third indication information is used to indicate the switching time information of the frequency domain unit switching supported by the terminal; The fourth indication information is used to indicate the switching options for frequency domain unit switching supported by the terminal; The fifth indication information is used to indicate the maximum number of frequency domain unit switching supported by the terminal within the first time period; The sixth indication information is used to indicate relevant information about the time division multiplexing pattern supported by the terminal; The seventh indication information is used to indicate the position of the switching time of the frequency domain unit switching supported by the terminal; The eighth indication information is used to indicate relevant information about the frequency domain unit of the transmission interruption supported by the terminal.

2. The method according to claim 1, wherein, The first information also includes a ninth indication information, which is used to indicate the frequency domain unit information that the terminal supports aggregation.

3. The method according to claim 1, wherein, The method further includes: The terminal sends a second message, which indicates that the terminal supports aggregated frequency domain unit information.

4. The method according to any one of claims 1 to 3, wherein, The indication granularity of at least one of the first indication information, the second indication information, the third indication information, the fourth indication information, the fifth indication information, the sixth indication information, the seventh indication information, the eighth indication information, the ninth indication information, and the second information includes at least one of frequency band pairs, frequency band combinations, and component carriers in the frequency bands of the frequency band combination.

5. The method according to any one of claims 1 to 4, wherein, The frequency domain unit switching mode includes at least one of the following: Switching is performed between a first frequency domain unit and a second frequency domain unit. The first frequency domain unit supports downlink transmission of less than or equal to a first number of antenna ports, and the second frequency domain unit supports downlink transmission of less than or equal to a second number of antenna ports. Switching is performed between a third frequency domain unit and a fourth frequency domain unit, wherein the third frequency domain unit supports uplink transmission of less than or equal to a third number of antenna ports, and the fourth frequency domain unit supports uplink transmission of less than or equal to a fourth number of antenna ports. Switching is performed between the fifth frequency domain unit and the sixth frequency domain unit. The fifth frequency domain unit supports downlink transmission of less than or equal to the fifth number of antenna ports, and the sixth frequency domain unit supports uplink transmission of less than or equal to the sixth number of antenna ports. Switching is performed between the seventh frequency domain unit and the eighth frequency domain unit. The seventh frequency domain unit supports uplink transmission of less than or equal to the seventh number of antenna ports and downlink transmission of less than or equal to the eighth number of antenna ports. The eighth frequency domain unit supports uplink transmission of less than or equal to the ninth number of antenna ports. Switching is performed between the ninth frequency domain unit and the tenth frequency domain unit. The ninth frequency domain unit supports uplink transmission of less than or equal to the tenth number of antenna ports and downlink transmission of less than or equal to the eleventh number of antenna ports. The tenth frequency domain unit supports downlink transmission of less than or equal to the twelfth number of antenna ports. Switching is performed between the eleventh frequency domain unit and the twelfth frequency domain unit. The eleventh frequency domain unit supports uplink transmission for less than or equal to the thirteenth number of antenna ports and downlink transmission for less than or equal to the fourteenth number of antenna ports. The twelfth frequency domain unit supports uplink transmission for less than or equal to the fifteenth number of antenna ports and downlink transmission for less than or equal to the sixteenth number of antenna ports.

6. The method according to claim 5, wherein, The maximum number of antenna ports supported by at least one of the first frequency domain unit, the second frequency domain unit, the third frequency domain unit, the fourth frequency domain unit, the fifth frequency domain unit, the sixth frequency domain unit, the seventh frequency domain unit, the eighth frequency domain unit, the ninth frequency domain unit, the tenth frequency domain unit, the eleventh frequency domain unit, and the twelfth frequency domain unit is determined by the maximum number of multiple-input multiple-output transmission layers reported by the terminal.

7. The method according to any one of claims 1 to 6, wherein, The switching time information of the frequency domain unit switching includes at least one of the following: The start time of frequency domain unit switching; The end time of frequency domain unit switching; The length of the frequency domain unit switching time; Frequency domain unit switching may or may not require switching time.

8. The method according to claim 7, wherein, The start time of the frequency domain unit switching time includes at least one of the following: The end time of the first transmission before the switchover; The start or end time of the time domain unit containing the end time of the first transmission before the switch; The end time of the second time period indicated by the time-division multiplexing pattern before the switchover; The start or end time of the time domain unit where the end time of the second time period indicated by the time division multiplexing pattern before the switchover is located; Alternatively, the end time of the frequency domain unit switching time includes at least one of the following: The start time of the second transmission after the switch; The start or end time of the time domain unit in which the second transmission after switching begins; The start time of the third time interval indicated by the time-division multiplexing pattern after the switch; The start or end time of the time domain unit where the start time of the third time period indicated by the time division multiplexing pattern after the switch is located; The second time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units before the handover or in the first state, and the third time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units after the handover or in the second state. The first transmission includes uplink transmission or downlink transmission, and the second transmission includes uplink transmission or downlink transmission.

9. The method according to claim 7 or 8, wherein, When the switching time information of the frequency domain unit switching includes the length of the frequency domain unit switching time, the length of the frequency domain unit switching time includes at least one of the length of the first switching time and the length of the second switching time; When the length of the frequency domain unit switching time includes the length of the first switching time and the length of the second switching time, the length of the first switching time is greater than or equal to the length of the second switching time.

10. The method according to any one of claims 1 to 9, wherein, The switching time information of the frequency domain unit is related to the frequency domain unit switching mode, and different frequency domain unit switching modes correspond to different frequency domain unit switching time information.

11. The method according to any one of claims 1 to 10, wherein, The switching time information of the frequency domain unit switching is applied under the first condition; The first condition includes at least one of the following: The maximum number of multiple-input multiple-output transmission layers reported by the terminal is greater than or equal to the sum of the number of multiple-input multiple-output transmission layers of the frequency domain units that the terminal supports switching. The maximum number of multiple input multiple output transmission layers reported by the terminal is greater than or equal to the sum of the maximum number of multiple input multiple output transmission layers of the frequency domain units before and after the handover configured by the network-side equipment.

12. The method according to any one of claims 1 to 11, wherein, The switching options for the frequency domain unit switching include one of the following: Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit; Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is not performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit; Alternatively, the switching options for the frequency domain unit switching include one of the following: Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit. Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is not performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit; Alternatively, the switching options for the frequency domain unit switching include one of the following: Before or after the handover, the terminal simultaneously receives downlink transmissions; Before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions. Before or after the handover, the terminals do not simultaneously receive downlink transmissions; Before or after the handover, the terminal does not simultaneously receive downlink transmissions and send uplink transmissions.

13. The method according to any one of claims 1 to 12, wherein, The relevant information of the time-division multiplexing pattern supported by the terminal includes at least one of the following: The terminal supports a time-division multiplexing pattern; The terminal supports multiple cascaded time-division multiplexing patterns; The terminal supports a certain number of cascaded time-division multiplexing patterns; The terminal supports the time-division multiplexing pattern period.

14. The method according to any one of claims 1 to 13, wherein, The first information includes the seventh indication information if at least one of the following conditions is met: The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the length of the frequency domain unit switching time; The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the sum of the length of the frequency domain unit switching time and the extra duration; Wherein, the first transmission includes uplink transmission or downlink transmission, and the second transmission includes uplink transmission or downlink transmission; The additional duration is related to at least one of the following: terminal capability, subcarrier spacing, frequency range, and distance from the center frequency of the switched frequency domain unit.

15. The method according to any one of claims 1 to 14, wherein, The location of the switching time for the frequency domain unit switching includes one of the following: On the frequency domain unit before the switch; On the switched frequency domain unit; In addition to the downlink frequency domain units; In the secondary frequency domain unit; On the secondary frequency domain units involved in the handover; On other auxiliary frequency domain units associated with the switched auxiliary frequency domain unit or main frequency domain unit; On the lowest priority frequency domain unit.

16. The method according to any one of claims 1 to 15, wherein, The method further includes: The terminal performs the first operation under at least one of the following conditions: The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the length of the frequency domain unit switching time; The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the sum of the length of the frequency domain unit switching time and the extra duration; Wherein, the first transmission includes uplink transmission or downlink transmission, and the second transmission includes uplink transmission or downlink transmission; The additional duration is related to at least one of the following: terminal capability, subcarrier spacing, frequency range, and distance from the center frequency of the switched frequency domain unit; The first operation includes at least one of the following: Ignore uplink or downlink transmissions of orthogonal frequency division multiplexing symbols whose switching times completely or partially overlap with those of frequency domain unit switching; Rate matching or puncturing is performed on physical uplink shared channels, physical downlink shared channels, or orthogonal frequency division multiplexing symbols whose switching times completely or partially overlap with those of frequency domain unit switching. Orthogonal frequency division multiplexing symbols that overlap with the switching time of frequency domain unit switching cannot be used for uplink or downlink transmission.

17. The method according to any one of claims 1 to 16, wherein, The relevant information of the frequency domain unit of the transmission interruption includes at least one of the following: Duration of transmission interruption; The start time of the transmission interruption includes the start time of the frequency domain unit switching; The start time of the transmission interruption includes the first orthogonal frequency division multiplexing symbol that overlaps or partially overlaps with the start time of the frequency domain unit switching; The transmission interruption is related to the switching time information of the frequency domain unit or the location of the switching time of the frequency domain unit.

18. The method according to any one of claims 1 to 17, wherein, The method further includes: The terminal determines the switching time information of the frequency domain unit switching of the application according to the third information or protocol agreement received from the network side device. The third information is used to indicate at least one of the switching time information of the frequency domain unit switching and the frequency domain unit switching mode. Alternatively, the terminal determines the position of the applied frequency domain unit switching time based on at least one of the following: the position of the switching time of the frequency domain unit switching configured by the network-side device, the position of the switching time of the frequency domain unit switching dynamically indicated by the network-side device, and the position of the switching time of the frequency domain unit switching agreed upon by the protocol. Alternatively, when the terminal determines the position of the switching time of the frequency domain unit switching of the application to be on the frequency domain unit before the switching, in the case of switching based on event or condition rather than switching based on time division multiplexing pattern; Alternatively, when the terminal switches from a secondary frequency domain unit or a supplementary downlink frequency domain unit to a primary frequency domain unit or a frequency division duplex frequency domain unit based on an event or condition, the location of the switching time of the applied frequency domain unit switching is determined on the secondary frequency domain unit or the supplementary downlink frequency domain unit. Alternatively, the terminal may determine the duration of the application's transmission interruption based on the duration of the transmission interruption configured by the network-side device or the protocol agreement.

19. The method according to claim 17 or 18, wherein, The duration of the transmission interruption is related to the subcarrier spacing of the frequency domain units involved in the handover.

20. The method according to any one of claims 1 to 19, wherein, The method further includes: The terminal performs frequency domain unit switching based on the transmission scheduled or activated by the network-side equipment.

21. The method according to claim 20, wherein, The method further includes: When the transmission scheduled or activated by the network-side device is completed, the terminal switches back to the frequency domain unit indicated by the time-division multiplexing pattern. Alternatively, after triggering the frequency domain unit switching, the terminal starts a timer, and after the timer expires, switches back to the frequency domain unit indicated by the time division multiplexing pattern; Alternatively, the terminal may not respond to the network-side device's cancellation command for the frequency domain unit switching during the fourth time period before transmission begins after the frequency domain unit switching. Alternatively, the terminal prepares to transmit data during the fourth time period; The fourth time period includes the switching time for frequency domain unit switching.

22. The method according to any one of claims 1 to 21, wherein, The frequency domain unit includes at least one of cell, carrier, frequency band, and frequency domain block.

23. A frequency domain unit switching method, comprising: The network-side device receives the first information from the terminal; The first information includes at least one of the following: First indication information, the first indication information is used to indicate the frequency domain unit information that the terminal supports switching; The second indication information is used to indicate the frequency domain unit switching mode supported by the terminal; The third indication information is used to indicate the switching time information of the frequency domain unit switching supported by the terminal; The fourth indication information is used to indicate the switching options for frequency domain unit switching supported by the terminal; The fifth indication information is used to indicate the maximum number of frequency domain unit switching supported by the terminal within the first time period; The sixth indication information is used to indicate relevant information about the time division multiplexing pattern supported by the terminal; The seventh indication information is used to indicate the position of the switching time of the frequency domain unit switching supported by the terminal; The eighth indication information is used to indicate relevant information about the frequency domain unit of the transmission interruption supported by the terminal.

24. The method according to claim 23, wherein, The first information also includes a ninth indication information, which is used to indicate the frequency domain unit information that the terminal supports aggregation.

25. The method according to claim 23, wherein, The method further includes: The network-side device receives second information from the terminal, the second information being used to indicate that the terminal supports aggregated frequency domain unit information.

26. The method according to any one of claims 23 to 25, wherein, The frequency domain unit switching mode includes at least one of the following: Switching is performed between a first frequency domain unit and a second frequency domain unit. The first frequency domain unit supports downlink transmission of less than or equal to a first number of antenna ports, and the second frequency domain unit supports downlink transmission of less than or equal to a second number of antenna ports. Switching is performed between a third frequency domain unit and a fourth frequency domain unit, wherein the third frequency domain unit supports uplink transmission of less than or equal to a third number of antenna ports, and the fourth frequency domain unit supports uplink transmission of less than or equal to a fourth number of antenna ports. Switching is performed between the fifth frequency domain unit and the sixth frequency domain unit. The fifth frequency domain unit supports downlink transmission of less than or equal to the fifth number of antenna ports, and the sixth frequency domain unit supports uplink transmission of less than or equal to the sixth number of antenna ports. Switching is performed between the seventh frequency domain unit and the eighth frequency domain unit. The seventh frequency domain unit supports uplink transmission of less than or equal to the seventh number of antenna ports and downlink transmission of less than or equal to the eighth number of antenna ports. The eighth frequency domain unit supports uplink transmission of less than or equal to the ninth number of antenna ports. Switching is performed between the ninth frequency domain unit and the tenth frequency domain unit. The ninth frequency domain unit supports uplink transmission of less than or equal to the tenth number of antenna ports and downlink transmission of less than or equal to the eleventh number of antenna ports. The tenth frequency domain unit supports downlink transmission of less than or equal to the twelfth number of antenna ports. Switching is performed between the eleventh frequency domain unit and the twelfth frequency domain unit. The eleventh frequency domain unit supports uplink transmission for less than or equal to the thirteenth number of antenna ports and downlink transmission for less than or equal to the fourteenth number of antenna ports. The twelfth frequency domain unit supports uplink transmission for less than or equal to the fifteenth number of antenna ports and downlink transmission for less than or equal to the sixteenth number of antenna ports.

27. The method according to claim 26, wherein, The maximum number of antenna ports supported by at least one of the first frequency domain unit, the second frequency domain unit, the third frequency domain unit, the fourth frequency domain unit, the fifth frequency domain unit, the sixth frequency domain unit, the seventh frequency domain unit, the eighth frequency domain unit, the ninth frequency domain unit, the tenth frequency domain unit, the eleventh frequency domain unit, and the twelfth frequency domain unit is determined by the maximum number of multiple-input multiple-output transmission layers reported by the terminal.

28. The method according to any one of claims 23 to 27, wherein, The switching time information of the frequency domain unit switching includes at least one of the following: The start time of frequency domain unit switching; The end time of frequency domain unit switching; The length of the frequency domain unit switching time; Frequency domain unit switching may or may not require switching time.

29. The method according to claim 28, wherein, The start time of the frequency domain unit switching time includes at least one of the following: The end time of the first transmission before the switchover; The start or end time of the time domain unit containing the end time of the first transmission before the switch; The end time of the second time period indicated by the time-division multiplexing pattern before the switchover; The start or end time of the time domain unit where the end time of the second time period indicated by the time division multiplexing pattern before the switchover is located; Alternatively, the end time of the frequency domain unit switching time includes at least one of the following: The start time of the second transmission after the switch; The start or end time of the time domain unit in which the second transmission after switching begins; The start time of the third time interval indicated by the time-division multiplexing pattern after the switch; The start or end time of the time domain unit where the start time of the third time period indicated by the time division multiplexing pattern after the switch is located; The second time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units before the handover or in the first state, and the third time period includes the time period indicated by the time division multiplexing pattern for transmission in the frequency domain unit or combination of frequency domain units after the handover or in the second state. The first transmission includes uplink transmission or downlink transmission, and the second transmission includes uplink transmission or downlink transmission.

30. The method according to any one of claims 23 to 29, wherein, The switching time information of the frequency domain unit switching is applied under the first condition; The first condition includes at least one of the following: The maximum number of multiple-input multiple-output transmission layers reported by the terminal is greater than or equal to the sum of the number of multiple-input multiple-output transmission layers of the frequency domain units that the terminal supports switching. The maximum number of multiple input multiple output transmission layers reported by the terminal is greater than or equal to the sum of the maximum number of multiple input multiple output transmission layers of the frequency domain units before and after the handover configured by the network-side equipment.

31. The method according to any one of claims 23 to 30, wherein, The switching options for the frequency domain unit switching include one of the following: Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit; Before or after the handover, at least one of the uplink and downlink transmissions of the frequency division duplex frequency domain unit is not performed simultaneously with the downlink transmission of the supplementary downlink frequency domain unit; Alternatively, the switching options for the frequency domain unit switching include one of the following: Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit. Before or after the switch, at least one of the uplink and downlink transmissions of the main frequency domain unit is not performed simultaneously with at least one of the uplink and downlink transmissions of the auxiliary frequency domain unit; Alternatively, the switching options for the frequency domain unit switching include one of the following: Before or after the handover, the terminal simultaneously receives downlink transmissions; Before or after the handover, the terminal simultaneously receives downlink transmissions and sends uplink transmissions. Before or after the handover, the terminals do not simultaneously receive downlink transmissions; Before or after the handover, the terminal does not simultaneously receive downlink transmissions and send uplink transmissions.

32. The method according to any one of claims 23 to 31, wherein, The relevant information of the time-division multiplexing pattern supported by the terminal includes at least one of the following: The terminal supports a time-division multiplexing pattern; The terminal supports multiple cascaded time-division multiplexing patterns; The terminal supports a certain number of cascaded time-division multiplexing patterns; The terminal supports the time-division multiplexing pattern period.

33. The method according to any one of claims 23 to 31, wherein, The location of the switching time for the frequency domain unit switching includes one of the following: On the frequency domain unit before the switch; On the switched frequency domain unit; In addition to the downlink frequency domain units; In the secondary frequency domain unit; On the secondary frequency domain units involved in the handover; On other auxiliary frequency domain units associated with the switched auxiliary frequency domain unit or main frequency domain unit; On the lowest priority frequency domain unit.

34. The method according to any one of claims 23 to 33, wherein, The relevant information of the frequency domain unit of the transmission interruption includes at least one of the following: Duration of transmission interruption; The start time of the transmission interruption includes the start time of the frequency domain unit switching; The start time of the transmission interruption includes the first orthogonal frequency division multiplexing symbol that overlaps or partially overlaps with the start time of the frequency domain unit switching; The transmission interruption is related to the switching time information of the frequency domain unit or the location of the switching time of the frequency domain unit.

35. The method according to any one of claims 23 to 34, wherein, The method further includes: The network-side device sends third information to the terminal, the third information being used to indicate at least one of the following: switching time information for frequency domain unit switching or frequency domain unit switching mode; Alternatively, the network-side device may send configuration information regarding the location of the switching time for the frequency domain unit switching to the terminal; Alternatively, the network-side device may dynamically indicate to the terminal the location of the switching time for the frequency domain unit switching; Alternatively, the network-side device may send configuration information regarding the duration of the transmission interruption to the terminal; Alternatively, the network-side device may send a transmission scheduling instruction or activation instruction to the terminal, the scheduling instruction or activation instruction being used to trigger frequency domain unit switching.

36. A frequency domain unit switching device, comprising: The first sending module is used to send the first information; The first information includes at least one of the following: The first indication information is used to indicate the frequency domain unit information that the terminal supports for switching; The second indication information is used to indicate the frequency domain unit switching mode supported by the terminal; The third indication information is used to indicate the switching time information of the frequency domain unit switching supported by the terminal; The fourth indication information is used to indicate the switching options for frequency domain unit switching supported by the terminal; The fifth indication information is used to indicate the maximum number of frequency domain unit switching supported by the terminal within the first time period; The sixth indication information is used to indicate relevant information about the time division multiplexing pattern supported by the terminal; The seventh indication information is used to indicate the position of the switching time of the frequency domain unit switching supported by the terminal; The eighth indication information is used to indicate relevant information about the frequency domain unit of the transmission interruption supported by the terminal.

37. The apparatus according to claim 36, wherein, It also includes a first processing module, used for: The first operation is performed under at least one of the following conditions: The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the length of the frequency domain unit switching time; The interval between the end time of the first transmission before the switch and the start time of the second transmission after the switch is less than or equal to the sum of the length of the frequency domain unit switching time and the extra duration; Wherein, the first transmission includes uplink transmission or downlink transmission, and the second transmission includes uplink transmission or downlink transmission; The additional duration is related to at least one of the following: terminal capability, subcarrier spacing, frequency range, and distance from the center frequency of the switched frequency domain unit; The first operation includes at least one of the following: Ignore uplink or downlink transmissions of orthogonal frequency division multiplexing symbols whose switching times completely or partially overlap with those of frequency domain unit switching; Rate matching or puncturing is performed on physical uplink shared channels, physical downlink shared channels, or orthogonal frequency division multiplexing symbols whose switching times completely or partially overlap with those of frequency domain unit switching. Orthogonal frequency division multiplexing symbols that overlap with the switching time of frequency domain unit switching cannot be used for uplink or downlink transmission.

38. The apparatus according to claim 36 or 37, wherein, It also includes a second processing module for: Based on third information or protocol received from network-side devices, the switching time information of frequency domain unit switching of the application is determined, wherein the third information is used to indicate at least one of the switching time information of frequency domain unit switching and frequency domain unit switching mode. Alternatively, the location of the applied frequency domain unit switching time can be determined based on at least one of the following: the location of the switching time of the frequency domain unit switching configured by the network-side device, the location of the switching time of the frequency domain unit switching dynamically indicated by the network-side device, and the location of the switching time of the frequency domain unit switching agreed upon by the protocol. Alternatively, in the case of event- or condition-based switching rather than time-division multiplexing pattern switching, the location of the switching time of the applied frequency domain unit switching is determined to be on the frequency domain unit before the switching. Alternatively, in the case of switching from a secondary frequency domain unit or a supplementary downlink frequency domain unit to a primary frequency domain unit or a frequency division duplex frequency domain unit based on an event or condition, the location of the switching time of the applied frequency domain unit switching is determined on the secondary frequency domain unit or the supplementary downlink frequency domain unit. Alternatively, the duration of the application's transmission interruption can be determined based on the transmission interruption duration configured in the network-side equipment or the protocol agreement.

39. The apparatus according to any one of claims 36 to 38, wherein, It also includes a third processing module, used for: Frequency domain unit switching is performed based on transmissions scheduled or activated by network-side devices.

40. The apparatus according to claim 39, wherein, It also includes a fourth processing module, used for: When the transmission scheduled or activated by the network-side device is completed, switch back to the frequency domain unit indicated by the time-division multiplexing pattern; Alternatively, after triggering the frequency domain unit switch, start a timer, and after the timer expires, switch back to the frequency domain unit indicated by the time division multiplexing pattern; Alternatively, during the fourth time period before transmission begins after the frequency domain unit switch, the network-side device's cancellation command for the frequency domain unit switch is not responded to. Alternatively, data transmission may be prepared during the fourth time period; The fourth time period includes the switching time for frequency domain unit switching.

41. A frequency domain unit switching device, comprising: The first receiving module is used to receive first information from the terminal; The first information includes at least one of the following: First indication information, the first indication information is used to indicate the frequency domain unit information that the terminal supports switching; The second indication information is used to indicate the frequency domain unit switching mode supported by the terminal; The third indication information is used to indicate the switching time information of the frequency domain unit switching supported by the terminal; The fourth indication information is used to indicate the switching options for frequency domain unit switching supported by the terminal; The fifth indication information is used to indicate the maximum number of frequency domain unit switching supported by the terminal within the first time period; The sixth indication information is used to indicate relevant information about the time division multiplexing pattern supported by the terminal; The seventh indication information is used to indicate the position of the switching time of the frequency domain unit switching supported by the terminal; The eighth indication information is used to indicate relevant information about the frequency domain unit of the transmission interruption supported by the terminal.

42. The apparatus according to claim 41, wherein, It also includes a second sending module, used for: Send third information to the terminal, the third information being used to indicate at least one of the following: switching time information for frequency domain unit switching or frequency domain unit switching mode; Alternatively, configuration information regarding the location of the switching time for the frequency domain unit switching can be sent to the terminal. Alternatively, the terminal may be dynamically instructed on the location of the switching time for the frequency domain unit switching; Alternatively, configuration information regarding the duration of the transmission interruption can be sent to the terminal; Alternatively, a transmission scheduling instruction or activation instruction may be sent to the terminal, the scheduling instruction or activation instruction being used to trigger frequency domain unit switching.

43. A terminal comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the frequency domain unit switching method as claimed in any one of claims 1 to 22.

44. A network-side device, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the frequency domain unit switching method as claimed in any one of claims 23 to 35.

45. A readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the frequency domain unit switching method as claimed in any one of claims 1 to 22, or implement the steps of the frequency domain unit switching method as claimed in any one of claims 23 to 35.

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