Wireless communication method and device, terminal equipment and network equipment

Abstract

The embodiment of the invention provides a wireless communication method and device, terminal equipment and network equipment, and the method comprises the steps that the terminal equipment receives first information on a first bandwidth part BWP, and the first information is used for indicating a second BWP; the first BWP is a BWP currently activated by the terminal equipment; and the terminal device performs communication on the second BWP.

Description

Wireless communication method and device, terminal equipment, and network equipment Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a wireless communication method and apparatus, terminal equipment, and network equipment. Background Art

[0002] With the development of communication technology, communication transmission resources are becoming increasingly scarce. How to improve resource utilization is a technical problem that needs to be solved urgently.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a wireless communication method and apparatus, a terminal device, and a network device.

[0005] An embodiment of the present application further provides a wireless communication method, the method comprising:

[0006] The terminal device receives first information on a first bandwidth part (Bandwidth Part, BWP), where the first information is used to indicate a second BWP; the first BWP is a BWP currently activated by the terminal device;

[0007] The terminal device communicates on the second BWP.

[0008] An embodiment of the present application further provides a wireless communication method, the method comprising:

[0009] The network device sends first information to the terminal device on the first BWP, where the first information is used to indicate the second BWP; the first BWP is the BWP currently activated by the terminal device;

[0010] The network device communicates with the terminal device on the second BWP.

[0011] The present application also provides a wireless communication device, which is applied to a terminal device and includes:

[0012] The first transceiver unit is configured to receive first information on a first BWP, where the first information is used to indicate a second BWP; the first BWP is a BWP currently activated by the terminal device;

[0013] The first transceiver unit is further configured to communicate on the second BWP.

[0014] An embodiment of the present application further provides a wireless communication device, applied to a network device, the device comprising:

[0015] The second transceiver unit is configured to send first information to the terminal device on the first BWP, where the first information is used to indicate the second BWP; the first BWP is the BWP currently activated by the terminal device;

[0016] The second transceiver unit is further configured to communicate with the terminal device on the second BWP.

[0017] The communication device provided in an embodiment of the present application may be a terminal device or a network device in the above-mentioned solution, and the communication device includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and execute the computer program stored in the memory to perform the above-mentioned wireless communication method.

[0018] The chip provided in the embodiment of the present application is used to implement the above-mentioned wireless communication method.

[0019] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned wireless communication method.

[0020] The computer-readable storage medium provided in an embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned wireless communication method.

[0021] The computer program product provided in the embodiments of the present application includes computer program instructions, which enable a computer to execute the above-mentioned wireless communication method.

[0022] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned wireless communication method.

[0023] In the wireless communication method provided in the embodiment of the present application, the terminal device can use the second BWP to perform data transmission under the instruction of the network device, thereby improving resource utilization.

[0024] Description of the attached figure

[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] FIG1 is a schematic diagram of a communication architecture provided in an embodiment of the present application;

[0027] FIG2 is a schematic diagram of the structure of a terminal device receiver system provided in an embodiment of the present application;

[0028] FIG3A is a timing diagram 1 of cross-BWP scheduling provided by an embodiment of the present application;

[0029] FIG3B is a second timing diagram of cross-BWP scheduling provided by an embodiment of the present application;

[0030] FIG4 is a flowchart of a wireless communication method according to an embodiment of the present application;

[0031] FIG5 is a timing diagram of a special signal transmission provided in an embodiment of the present application;

[0032] FIG6 is a second flow chart of a wireless communication method provided in an embodiment of the present application;

[0033] FIG7A is a third flow chart of a wireless communication method provided in an embodiment of the present application;

[0034] FIG7B is a fourth flow chart of a wireless communication method provided in an embodiment of the present application;

[0035] FIG8 is a signal transmission timing diagram 1 provided in an embodiment of the present application;

[0036] FIG9 is a second timing diagram of signal transmission provided in an embodiment of the present application;

[0037] FIG10A is a third signal transmission timing diagram provided by an embodiment of the present application;

[0038] FIG10B is a fourth signal transmission timing diagram provided by an embodiment of the present application;

[0039] FIG11 is a fifth flow chart of a wireless communication method according to an embodiment of the present application;

[0040] FIG12 is a schematic diagram of the first structure of a wireless communication device provided in an embodiment of the present application;

[0041] FIG13 is a second schematic diagram of the structure of a wireless communication device provided in an embodiment of the present application;

[0042] FIG14 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0043] FIG15 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0044] FIG16 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0047] As shown in Figure 1, a communication system 100 may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0048] It should be understood that the embodiments of the present application are only illustrative of the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems.

[0049] 1 , the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 (eg, UE) located within the coverage area.

[0050] The network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0051] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0052] For example, the terminal device 110 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0053] The terminal device 110 can be used for device-to-device (D2D) communication.

[0054] The wireless communication system 100 may further include a core network device 130 that communicates with the network device 120. The core network device 130 may be a 5G core network (5G Core, 5GC) device, such as an Access and Mobility Management Function (AMF), an Authentication Server Function (AUSF), a User Plane Function (UPF), or a Session Management Function (SMF). Optionally, the core network device 130 may also be an Evolved Packet Core (EPC) device of an LTE network, such as a Session Management Function + Core Packet Gateway (SMF+PGW-C) device. It should be understood that SMF+PGW-C can simultaneously implement the functions that can be implemented by SMF and PGW-C. During the network evolution process, the above-mentioned core network device may also be called other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited in the embodiments of the present application.

[0055] The functional units in the communication system 100 may also establish connections and implement communication via next generation (NG) network interfaces.

[0056] For example, the terminal device establishes an air interface connection with the access network device through the NR interface for transmitting user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (referred to as N1); the access network device, such as the next generation wireless access base station (gNB), can establish a user plane data connection with the UPF through the NG interface 3 (referred to as N3); the access network device can establish a control plane signaling connection with the AMF through the NG interface 2 (referred to as N2); the UPF can establish a control plane signaling connection with the SMF through the NG interface 4 (referred to as N4); the UPF can exchange user plane data with the data network through the NG interface 6 (referred to as N6); the AMF can establish a control plane signaling connection with the SMF through the NG interface 11 (referred to as N11); the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (referred to as N7).

[0057] Figure 1 exemplarily shows a network device, a core network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0058] It should be noted that Figure 1 is merely an example of a system applicable to this application. Of course, the methods described in the embodiments of this application can also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein simply describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the associated objects are in an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, "A indicates B" can mean that A directly indicates B, for example, B can obtain information through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can obtain information through C; or it can mean that A and B have an association relationship. It should also be understood that the "correspondence" mentioned in the embodiments of this application can mean that there is a direct or indirect correspondence between two objects, or that there is an association relationship between the two objects, or a relationship between an indicator and the indicated, a configuration and the configured, and so on. It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and the present application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol. It should also be understood that in the embodiments of the present application, the “protocol” may refer to a standard protocol in the field of communications, for example, it may include LTE protocols, NR protocols, and related protocols used in future communication systems, and the present application does not limit this.

[0059] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0060] In order to further reduce the power consumption of terminal devices, the standard discussion version 18 (R18) considers introducing a wake-up receiver (Wake Up Receiver, WUR) for the terminal device, and receiving the wake-up signal (Wake Up Signal, WUS) through the WUR. WUR has the characteristics of extremely low cost, extremely low complexity and extremely low power consumption, and it mainly receives the wake-up signal through an envelope detection-based method. Therefore, the WUS received by the wake-up receiver is different from the modulation method, waveform, etc. of the signal carried by the physical downlink control channel (Physical Downlink Control Channel, PDCCH) defined in R16 and R17. WRS mainly modulates the envelope signal by amplitude shift keying (ASK) of the carrier signal. The demodulation of the envelope signal can be completed by driving a low-power circuit based on the energy provided by the wireless radio frequency signal, so the WUR can be a passive receiver. In addition, the WUR can also be powered by the terminal device. Regardless of the power supply method, the WUR greatly reduces the power consumption compared to the traditional receiver of the terminal device. WUR can be combined with the main receiver in the terminal device as an additional module of the main receiver, or it can be used alone as a wake-up function module of the terminal device.

[0061] For example, referring to the schematic diagram of a terminal device receiver system structure shown in Figure 2, the terminal device's main receiver and WUR share a common RF antenna. The WUR can receive the WUS. If the terminal device needs to turn on the main receiver, the WUR can send a wake-up message to the main receiver, instructing it to turn on. Otherwise, the terminal device's main receiver can remain off.

[0062] In practice, a terminal device can have at most one active downlink BWP and one active uplink BWP at a time. A network device can configure up to four uplink BWPs and up to four downlink BWPs for a connected terminal device. The active uplink BWP is one of the four configured uplink BWPs, and the active downlink BWP is one of the four configured downlink BWPs.

[0063] For Frequency Division Duplexing (FDD) systems, there is no explicit association between uplink BWP and downlink BWP. For example, a network device may configure four uplink BWPs (with BWP index values ​​of 0, 1, 2, and 3) and four downlink BWPs (with BWP index values ​​of 0, 1, 2, and 3) for a connected terminal device. The index value of the currently activated uplink BWP may be 0, i.e., uplink BWP 0, and the index value of the currently activated downlink BWP may be 1, i.e., downlink BWP 1. If the network device instructs to switch downlink BWP 0 to downlink BWP 2, the uplink BWP activated by the terminal device may remain unchanged.

[0064] For a time division duplex (TDD) system, the uplink BWP and the downlink BWP need to be switched in pairs. The uplink BWP and the downlink BWP with the same BWP index indicated by the network device are activated at the same time.

[0065] The terminal device supports multiple BWP switching modes, including but not limited to BWP switching based on downlink control information (DCI), BWP switching based on radio resource control (RRC) signaling, BWP switching based on timer, and BWP switching triggered by random access channel (RACH).

[0066] Among them, for the BWP switching triggered by DCI, the DCI for data scheduling of the terminal device may include a BWP indication field (Bandwidth part indicator), and the number of bits of the indication field is determined according to the number of BWPs configured by the network device to the terminal device. For example, the number of bits of the indication field can be 0, 1 or 2. Specifically, the bit length of the BWP indication field is log2(n BWP ), n BWP The number of BWPs configured for the network device for the terminal device.

[0067] Among them, the number of BWPs configured in the high-level RRC signaling (n BWP,RRC ) is less than or equal to 3 (i.e. n BWP,RRC ≤3), n BWP =n BWP,RRC +1. In this scenario, the BWP indication field is the same as the BWP-ID configured in the higher-level parameters. In other cases, n BWP =n BWP,RRCFor example, Table 1 shows the correspondence between the BWP indication field value and the BWP when the network device is configured with four BWPs through high-layer signaling.

[0068] Table 1

[0069]

[0070] It can be seen that when the BWP indication field value is 00, it can indicate the first BWP configured by the higher-layer signaling. When the BWP indication field value is 01, it can indicate the second BWP configured by the higher-layer signaling. When the BWP indication field value is 10, it can indicate the third BWP configured by the higher-layer signaling. When the BWP value is 11, it can indicate the fourth BWP configured by the higher-layer signaling.

[0071] When the BWP of the terminal device needs to be switched, the network device can indicate an indication value corresponding to a BWP different from the current BWP of the terminal device in the BWP indication field in the DCI sent to the terminal device. After receiving the BWP, the terminal device performs the BWP switching.

[0072] In addition, the terminal device can also switch the BWP based on a timer. The terminal device can configure a BWP timer. In this way, the terminal device can reset the BWP timer every time it receives a DCI schedule in the current BWP, and continue to count. When the BWP timer expires, the terminal device can switch to the default BWP.

[0073] It should be understood that BWP can be used for both PDCCH reception and Physical Downlink Shared Channel (PDSCH) reception, and each BWP contains a control resource set (CORESET). In this way, without BWP switching, the PDCCH in a BWP can be used to schedule the PDSCH in the same BWP, and the subcarrier spacing of the PDCCH and the scheduled PDSCH is also consistent.

[0074] In practice, the NR system supports cross-BWP scheduling. Specifically, when a terminal device receives a DCI containing a BWP indication that triggers a BWP switch, if the BWP indicated by the BWP indication is different from the currently activated BWP, a BWP switch will occur before the PDSCH scheduled by the DCI. In this way, the PDCCH and the PDSCH scheduled by it will be in different BWPs. This operation can be called cross-BWP scheduling.

[0075] As shown in Figure 3A, if cross-BWP scheduling is allowed, the DCI that triggers a BWP switch in BWP 1 can directly schedule the PDSCH in BWP 2 after the BWP switch is completed. In this way, the terminal device can immediately receive data on the scheduled PDSCH after the activated BWP switches to BWP 2. Of course, using the scheduling DCI to indicate BWP switching is the most efficient way to implement "cross-BWP scheduling."

[0076] If cross-BWP scheduling is not permitted, a dedicated BWP switching DCI format can be used, but achieving fast scheduling is somewhat difficult. As shown in Figure 3B, the last DCI in BWP 1 only triggers a BWP switch but is not used to schedule the PDSCH. After the BWP switch is completed, the terminal device detects a DCI scheduling PDSCH in the post-switch BWP 2, obtains the PDSCH scheduling information, and then receives data on the scheduled PDSCH at a later time.

[0077] It should be understood that for the BWP switching and cross-BWP scheduling mechanism, the BWP indication information in the DCI indicates the BWP switching, while the resource indication information in the DCI is used to indicate the time-frequency resources on the new BWP after the BWP switching. In other words, BWP switching and cross-BWP scheduling occur simultaneously through DCI indication.

[0078] It should be noted that, in the embodiment of the present application, the DCI indicating BWP switching and cross-BWP scheduling is referred to as scheduling DCI.

[0079] In actual applications, in order to improve resource utilization, the time-frequency resources carrying special signals (such as WUS, paging signals, synchronization signal blocks, etc.) are reused with the time-frequency resources of existing NR channels and signals to avoid the large resource overhead caused by configuring dedicated time-frequency resources for special signals. At the same time, if the time-frequency resources carrying special signals are not at the edge of the existing system bandwidth, some resource "holes" will be formed in the middle of the frequency domain resources within the system bandwidth, causing the network equipment to be unable to schedule continuous frequency domain resources for data transmission, resulting in a decrease in resource utilization. Since the range of frequency domain resources for data scheduling is the frequency domain resources within the activated BWP, the corresponding BWP can be configured separately for special signals, without having to configure the frequency domain resources for special signals on the data scheduling BWP to generate resource "holes".

[0080] It should be understood that when separate BWPs are configured for special signals, since these signals are not transmitted continuously, for example, they may be transmitted periodically. To improve resource utilization, network devices can utilize the BWPs configured for these signals for resource scheduling when the special signals are not being transmitted. However, there is currently no clear method for scheduling these BWPs.

[0081] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0082] 4 , the wireless communication method provided in the embodiment of the present application may include step 410 and step 420 .

[0083] Step 410: The terminal device receives first information on a first BWP, where the first information is used to indicate a second BWP, wherein the first BWP is a BWP currently activated by the terminal device.

[0084] Step 420: The terminal device communicates on the second BWP.

[0085] Among them, the first information can be sent by the network device, or forwarded by the network device through other devices, and the embodiment of the present application does not limit this.

[0086] In some embodiments, the first BWP may be a BWP currently activated by the terminal device. The first BWP may be configured by the network device, pre-configured, or agreed upon by a protocol, which is not limited in the embodiments of the present application.

[0087] It is understandable that the network device can send the first information to the terminal device via the BWP currently activated by the terminal device. Accordingly, the terminal device can receive the first information sent by the network device on at least part of the time-frequency resources of the currently activated BWP.

[0088] The first information may indicate a second BWP different from the first BWP. It is understandable that after receiving the first information, the terminal device may communicate with the network device through the second BWP indicated by the first information.

[0089] In some embodiments, the second BWP may be a BWP for a special signal, i.e., a BWP configured by the network device for transmitting the special signal. The special signal may be a signal used to wake up the main receiver of the terminal device to transmit data and / or control information, thereby reducing the power consumption of the terminal device. Exemplary special signals may include WUS, energy-saving signals, paging signals, etc., which are not limited in this embodiment of the present application.

[0090] That is, the second BWP may be at least one of the following: a BWP where the WUS is located, a BWP where the energy-saving signal is located, and a BWP where the paging signal is located.

[0091] It should be noted that the WUS and the energy-saving signal may be the same signal or different signals, and the embodiment of the present application does not limit this.

[0092] It should also be noted that the first information can be physical layer control signaling, such as DCI; the first information can also be high-level control signaling, such as radio resource control (RRC) signaling, and the first information can also be dedicated signaling, which is not limited in this embodiment of the present application.

[0093] In some embodiments, the first information may include BWP indication information, and the BWP indication information may carry identification information, an index value, and other information that can uniquely identify the second BWP.

[0094] It can be understood that the time-frequency resources on the second BWP corresponding to the special signal can be used for the transmission of the special signal. Since the special signal is not always transmitted, other data can be transmitted on the time-frequency resources where the special signal is not transmitted to improve resource utilization.

[0095] In an embodiment of the present application, a network device, acting as a resource scheduler, may instruct a terminal device to communicate on a second BWP where a special signal resides. The second BWP may be used to transmit data, or the second BWP may be used to transmit data and control information. It will be appreciated that communicating on the second BWP may include transmitting data on the second BWP, or transmitting data and control information on the second BWP, and this embodiment of the present application is not limited thereto. For example, the data transmitted on the second BWP may be a PDSCH, and the control information may be a PDCCH.

[0096] It can be seen that the terminal device can reuse the second BWP configured by the network device for special signals for communication according to the instruction of the network device, which effectively improves the utilization rate of spectrum resources.

[0097] It should be understood that the frequency domain bandwidth of the second BWP corresponding to the special signal is generally small and is primarily used for transmitting the special signal. However, the special signal is not always transmitted. For example, when the special signal is periodically transmitted, as shown in FIG5 , the special signal may only be transmitted during the continuous transmission time (on duration) within a transmission cycle and is not transmitted during the non-continuous transmission time (off duration).

[0098] Therefore, during the off duration, the time-frequency resources on the second BWP corresponding to the special signal can be used for other types of communications. Based on this, the network device can instruct the terminal device to communicate on the second BWP configured specifically for the special signal through the first information.

[0099] However, if the network device wants to perform cross-BWP scheduling, it will also trigger the terminal device to switch BWP, that is, the BWP activated by the scheduled terminal device will be switched to the second BWP where the special signal is located. This may not be the desired result of the network, because the second BWP where the special signal is located is mainly used for the transmission of special signals, and the PDCCH search space may not be configured. If the terminal device uses the second BWP as the activated BWP, it may cause the terminal device to no longer receive control information to switch to other BWPs. In addition, the bandwidth of the second BWP corresponding to the special signal is generally small. If the network device needs to interact with the terminal device for data, it does not want the terminal device to switch to the second BWP where the special signal is located and use the second BWP as the activated BWP.

[0100] Based on this, in the embodiment of the present application, after the terminal device completes communication on the second BWP, it can still use the first BWP as the active BWP and resume communication on the first BWP. In other words, after completing communication on the second BWP, the terminal device can actively communicate on the originally activated first BWP.

[0101] In one possible implementation, the terminal device may not switch the state of the active BWP while responding to the first information. That is, the terminal device's active BWP may remain the first BWP, and the terminal device may only perform a single data transmission on the second BWP. In this way, after completing the data transmission, the terminal device can continue to communicate using the first BWP.

[0102] In another possible implementation, the terminal device may adaptively switch the currently activated BWP during the process of responding to the first information. Specifically, the terminal device may complete two switchings of the activated BWP. In the first switching, the activated BWP may be switched from the first BWP to the second BWP. In the second switching, the terminal device may proactively switch the activated BWP from the second BWP to the original first BWP. In this way, the terminal device can resume subsequent communications on the originally activated first BWP.

[0103] It should be noted that after the terminal device completes communication on the second BWP, re-communication on the original first BWP can be an active operation of the terminal device, rather than being instructed or scheduled by the network device.

[0104] It can be seen from this that the terminal device can, under the instruction of the network device, reuse the second BWP where the special signal is located for communication, and after the communication is completed, communicate again on the originally activated first BWP. This can fully utilize the BWP where the special signal is located, improve resource utilization, and avoid restrictions on the terminal device's communication on the second BWP.

[0105] In an embodiment of the present application, as shown in FIG6 , the terminal device communicates via the second BWP in step 420, which can be implemented in the following manner:

[0106] Step 420a: The terminal device switches the activated BWP from the first BWP to the second BWP.

[0107] The terminal device can communicate on the second BWP.

[0108] It is understandable that after receiving the first information, the terminal device can switch the activated BWP from the first BWP to the second BWP, and use the second BWP as the BWP activated by the terminal device. The terminal device can communicate with the network device on the second BWP according to the instruction of the first information.

[0109] In the embodiment of the present application, during the process of switching from the first BWP to the second BWP, the terminal device may perform RF retuning and / or baseband parameter reconfiguration to switch the RF resources from the first BWP to the second BWP, with the second BWP being the active BWP. In this way, the terminal device can communicate on the second BWP.

[0110] Optionally, referring to FIG. 7A , after step 420a, the wireless communication method provided in the embodiment of the present application may further include the following steps:

[0111] Step 430: After completing the communication on the second BWP, the terminal device switches the activated BWP from the second BWP to the first BWP.

[0112] It is understood that after receiving the first information, the terminal device can complete two switching of the activated BWP. In the first switching, the terminal device can switch the activated BWP from the first BWP to the second BWP based on the first information, with the second BWP being the activated BWP of the terminal device. In this way, the terminal device can communicate via the activated second BWP. In the second switching, the terminal device can proactively switch the activated BWP from the second BWP to the original first BWP, with the original first BWP being the activated BWP of the terminal device. In this way, the terminal device and the network device can perform subsequent resource scheduling based on the originally activated first BWP.

[0113] It is worth noting that during the second handover described above, the terminal device can make an autonomous decision to proactively switch the activated second BWP back to the originally used first BWP. That is, in this embodiment of the present application, during the second handover, the terminal device can switch the activated BWP back to the original first BWP without requiring any signaling instructions. In this way, the terminal device and the network device can perform subsequent resource scheduling based on the original first BWP.

[0114] In the second switching, the terminal device switches the activated BWP from the second BWP to the first BWP after completing the communication on the second BWP.

[0115] In some embodiments, the first information may be used only to indicate the second BWP, and resource scheduling for data transmission by the terminal device on the second BWP may be accomplished through another information. For example, the terminal device may receive DCI 1 (i.e., the first information) and DCI 2, where DCI 1 may indicate the second BWP and DCI 2 may indicate PDSCH transmission on the first time-frequency resource on the second BWP. Based on this, the terminal device may determine the second BWP based on DCI 1 and determine, based on DCI 2, that the scheduled PDSCH is transmitted on the first time-frequency resource of the second BWP.

[0116] In some embodiments, in addition to indicating the second BWP, the first information can also be used to indicate the transmission of the first data on the first time-frequency resource of the second BWP. That is, the first information can indicate BWP switching and cross-BWP scheduling. Exemplarily, the first information may include BWP indication information and resource indication information, wherein the BWP indication information may indicate the second BWP, and the resource indication information may indicate the first time-frequency resource on the second BWP. While the BWP indication information in the first information indicates BWP switching, the resource scheduling information also indicates the frequency domain resources on the new BWP after the BWP switching. That is, BWP switching and cross-BWP scheduling occur simultaneously as indicated by the first information.

[0117] In some embodiments, the first information may be a scheduling DCI. The scheduling DCI may indicate the second BWP and the first time-frequency resource for transmitting the first data on the second BWP. The scheduling DCI may also indicate only the second BWP without being used for scheduling data. The embodiments of the present application do not limit the indication content of the scheduling DCI.

[0118] Optionally, when the first information indicates that the first data is to be transmitted on the first time-frequency resource of the second BWP, the terminal device completing the communication on the second BWP may include: the terminal device completing the transmission of the first data on the first time-frequency resource of the second BWP. That is, after the terminal device completes the data scheduled by the first information on the second BWP, it actively switches the active BWP from the second BWP to the first BWP. In this way, the terminal device can use the second BWP for data transmission, improving resource utilization. At the same time, after the terminal device completes the communication on the second BWP, it can switch the active BWP to the original first BWP, without having to use the second BWP for subsequent resource scheduling. In this way, additional restrictions on the second BWP where the special signal is located are avoided, thereby ensuring normal data interaction between the network device and the terminal device.

[0119] In some embodiments, after the terminal device completes communication on the second BWP, it can immediately switch the activated BWP from the second BWP to the original first BWP.

[0120] In other embodiments, the terminal device may be configured with a timer. The terminal device may start the timer when switching the active BWP from the first BWP to the second BWP, or start the timer after the terminal device completes transmission on the second BWP, and when the timer expires, the terminal device switches the active BWP from the second BWP to the first BWP, resetting the first BWP as the active BWP of the terminal device.

[0121] It should be noted that the timer can be configured by the network device, can be pre-configured, can be agreed upon by the protocol, or can be set by the terminal device itself. The embodiments of the present application do not impose any restrictions on this.

[0122] In some embodiments, the terminal device may transmit the first data on the second BWP in steps 420a and 430. Therefore, the feedback information of the terminal device regarding the first data transmitted on the second BWP may be transmitted via the first BWP or the second BWP.

[0123] The feedback information may be Hybrid Automatic Repeat reQuest (HARQ) information, or other types of feedback information, which is not limited in the embodiment of the present application.

[0124] In one possible implementation, after the terminal device completes communication on the second BWP, it can actively switch the active BWP from the second BWP to the original first BWP. The terminal device can choose to provide feedback after the active BWP is switched from the second BWP to the first BWP. Specifically, the terminal device can transmit feedback information of the first data on the original first BWP after switching back to the original BWP.

[0125] In another possible implementation, the terminal device may also choose to provide feedback on the received first information before the activated BWP switches from the second BWP to the first BWP, and the terminal device may transmit feedback information for the first data on the second BWP.

[0126] It should be noted that the terminal device can choose any of the above methods to send data feedback information, and the embodiments of the present application do not limit this.

[0127] It should be understood that the first BWP and the second BWP may include only a downlink BWP, or may include a paired uplink BWP and downlink BWP. For example, for an FDD system, the first BWP and the second BWP may include only a downlink BWP. For a TDD system, the first BWP and the second BWP may include a paired uplink BWP and downlink BWP. It should be noted that the BWP indicated by the BWP indication information corresponds to an uplink BWP and a downlink BWP, and both BWPs are simultaneously active.

[0128] In the embodiment of the present application, the first BWP and the second BWP may include a paired uplink BWP and downlink BWP. In this way, the terminal device may transmit feedback information for the above data on the uplink BWP corresponding to the first BWP, or the terminal device may transmit feedback information for the above data on the uplink BWP corresponding to the second BWP.

[0129] Exemplarily, as shown in reference Figure 8, in a TDD system, a terminal device can receive DCI 1 (i.e., first information) on downlink BWP 1. The BWP indication information in the DCI 1 indicates downlink BWP 2, and the resource scheduling information is used to schedule PDSCH 1 in BWP 2. After receiving DCI 1, the terminal device performs RF retuning and / or baseband parameter reconfiguration. After a first processing delay, the currently activated BWP of the terminal device can be switched to downlink BWP 2. The terminal device receives PDSCH 1 on downlink BWP 2. Since downlink BWP 1 corresponds to uplink BWP 1, after the transmission of PDSCH 1 is completed, the terminal device automatically switches the activated BWP to uplink BWP 1. After a second switching delay, the terminal device can transmit HARQ information of the first data on the PUCCH of uplink BWP 1.

[0130] In actual applications, it takes a certain amount of time for a terminal device to perform radio frequency retuning and / or baseband parameter reconfiguration. During this period, the terminal device cannot perform normal transmitting and receiving operations.

[0131] It should be understood that the RF retuning time may include the time required to receive the first information, the time required to retun the frequency and RF bandwidth, and the time required for adjustment of components such as the analog-to-digital converter (ADC), digital-to-analog converter (DAC), and automatic gain control (AGC). Table 2 shows the values ​​of the RF retuning time under different conditions.

[0132] Table 2

[0133]

[0134] As can be seen from Table 2, if the BWP switching occurs within the current frequency band, with the center frequency unchanged and only the bandwidth changed, the RF retuning time can be 20 microseconds (μs), corresponding to approximately 1 time-domain symbol at a 30kHz subcarrier spacing and approximately 2 time-domain symbols at a 60kHz subcarrier spacing. If the BWP switching occurs within the frequency band and the center frequency changes, the RF retuning time is 50-200 μs, corresponding to approximately 2-6 time-domain symbols at a 30kHz subcarrier spacing and approximately 3-12 time-domain symbols at a 60kHz subcarrier spacing. If the BWP switching occurs in another frequency band, i.e., inter-band operation, the RF retuning time is 900 μs, corresponding to approximately 26 time-domain symbols at a 30kHz subcarrier spacing and approximately 51 time-domain symbols at a 60kHz subcarrier spacing.

[0135] It should be noted that when the terminal device switches the active BWP from the first BWP to the second BWP, there is a time interval between the terminal device communicating on the first BWP and communicating on the second BWP. During this time interval, the terminal device cannot perform any sending or receiving operations. Based on this, in one embodiment of the present application, in step 420, the terminal device communicates via the second BWP, which can be achieved by:

[0136] After the second time period, the terminal device communicates on the second BWP.

[0137] The second time period may include a time period in which the terminal device switches from the first BWP to the second BWP.

[0138] That is, the second time period at least includes the time period when the terminal device switches from the first BWP to the second BWP. In other words, the second time period may include the time interval between the terminal device communicating on the first BWP and communicating on the second BWP as described above.

[0139] In the embodiment of the present application, the second time period of the terminal device may include a time period from when the terminal device does not communicate on the first BWP to when the terminal device communicates on the second BWP.

[0140] The terminal device can avoid the second time period during which no sending or receiving operations are performed. In other words, the terminal device can refrain from transmitting data during the second time period. After the second time period, communication can be performed on the second BWP. This avoids data loss caused by the terminal device being unable to perform sending or receiving operations during the second time period, thereby ensuring correct data transmission.

[0141] Optionally, the terminal device not transmitting data may include the terminal device not receiving specified data. Exemplarily, the specified data may be PDSCH, PDCCH, etc., which is not limited in the embodiments of the present application. The terminal device not transmitting data may also include the terminal device not demodulating or decoding the received information, or the terminal device not performing other operations other than demodulating and decoding the received information, or the terminal device treating the received data as an error case, which is not limited in the embodiments of the present application.

[0142] In addition, the network device may avoid interacting with the terminal device during the second time period. Specifically, the network device may determine the time period for the terminal device to perform radio frequency retuning and / or baseband parameter reconfiguration based on the time lengths in Table 2, thereby avoiding scheduling data for the terminal device during the second time period.

[0143] Optionally, the second time period may be indicated by the first information. Exemplarily, the first information may include a delay indication field, and the second time period is indicated by the delay indication field.

[0144] Furthermore, the terminal device can start communicating on the second BWP after the second time period. Taking downlink scheduling as an example, as shown in Figure 9, the terminal device receives DCI 1 (i.e., the first information) on BWP 1, the BWP indication information in DCI 1 indicates BWP 2, and the resource scheduling information in DCI 1 can indicate PDSCH 1. After receiving DCI 1, the terminal device can perform RF retuning and / or baseband parameter reconfiguration according to the indication of DCI 1, and after the second time period, switch the activated BWP 1 to BWP 2. It can be seen that after the second time period, the terminal device can receive PDSCH 1 scheduled by DCI 1 on the time-frequency resources of BWP 2.

[0145] It should be noted that after the terminal device completes communication on the second BWP, in the process of switching the activated BWP from the second BWP to the first BWP, the terminal device needs to perform RF retuning and / or baseband parameter reconfiguration again, and switch the RF resources from the second BWP to the original first BWP, so that the terminal device can communicate on the first BWP again.

[0146] It should be understood that during the period when the terminal device is performing radio frequency retuning and / or baseband parameter reconfiguration, the terminal device cannot perform normal transceiver operations. In other words, during the process of the terminal device switching the active BWP from the second BWP to the first BWP, there is a period of time between the terminal device communicating on the second BWP and communicating on the first BWP, and the terminal device cannot perform transceiver operations during this time interval.

[0147] Based on this, the terminal device can communicate again on the first BWP after the second BWP transmission is completed after a first time period; wherein the first time period may include a time period in which the terminal device switches the activated BWP from the second BWP to the first BWP.

[0148] It can be understood that the first time period may at least include the time period consumed by the terminal device switching the activated BWP from the second BWP to the first BWP.

[0149] That is, the first time period includes at least the time period during which the terminal device switches from the second BWP to the first BWP. The first time period may be the time interval between when the terminal device communicates on the second BWP and when it communicates on the first BWP. Alternatively, the first time period may be the time period between when the terminal device is no longer communicating on the second BWP and when it resumes communicating on the first BWP.

[0150] The terminal device can avoid the first time period when switching from the second BWP to the first BWP and not transmit data during the first time period. After the first time period, the terminal device can resume communication on the first BWP to avoid data loss caused by the inability to transmit and receive during the first time period, thereby ensuring correct data transmission.

[0151] Among them, the terminal device not transmitting data may include the terminal device not receiving specified data. For example, the specified data may be PDSCH, PDCCH, etc., which is not limited in the embodiments of the present application. The terminal device not transmitting data may also include the terminal device not demodulating or decoding the received information, or the terminal device not performing other operations other than demodulating and decoding the received information, or the terminal device treating the received data as an error case, which is not limited in the embodiments of the present application.

[0152] It is understandable that, in step 4, the terminal device may perform BWP switching twice, and therefore, the terminal device may not receive data in both the first time period and the second time period.

[0153] Referring to Figure 9, taking downlink scheduling as an example, the terminal device receives DCI 1 (i.e., the first information) on BWP 1, the BWP indication information in DCI 1 indicates BWP 2, and the resource scheduling information in DCI 1 can indicate PDSCH 1. After receiving DCI 1, the terminal device can perform RF retuning and / or baseband parameter reconfiguration according to the instruction of DCI 1, and after a second time period, switch the activated BWP 1 to BWP 2. The terminal device can receive PDSCH 1 scheduled by DCI 1 on the time-frequency resources of BWP 2. After completing the reception of PDSCH 1, the terminal device can actively perform RF retuning and / or baseband parameter reconfiguration, and after a first time period, switch the activated BWP 2 to BWP 1. The second BWP switching does not require an instruction, and automatically switches to BWP 1 after the reception of PDSCH 1 is completed. In this way, the terminal device can continue to receive DCI 2 on BWP 1 and receive PDSCH 2 scheduled by DCI 2.

[0154] In some embodiments, the network device may avoid scheduling resources for the terminal device on time domain resources within the first time period and the second time period. It is understood that when performing cross-BWP scheduling, the network device may, according to the requirements shown in Table 2, avoid scheduling time domain resources during the time period when the terminal device performs RF retuning and / or baseband parameter reconfiguration.

[0155] In some embodiments, if a terminal device receives scheduling information from a network device for time domain resources within a first time period and / or a second time period, the terminal device may regard the scheduling information as an error case and may not respond to the scheduling information. For example, the terminal device may not receive the PDSCH scheduled by the network device.

[0156] Taking downlink scheduling as an example, as shown in Figure 10A, the terminal device can receive DCI 1 (i.e., the first information) on BWP 1. DCI 1 includes BWP indication information, and the BWP indication information indicates BWP 2. DCI 1 also includes resource scheduling information, scheduling PDSCH 1 and PDSCH 2 respectively. Among them, the time-frequency resources of PDSCH 1 are located in the second time period, and PDSCH 2 is located in the time domain after switching to BWP 2. After the terminal device receives DCI 1, the delay of switching from BWP 1 to BWP 2 for RF retuning and / or baseband parameter reconfiguration is the second time period. It can be seen that PDSCH 1 is located in the time domain resources of the second time period. Therefore, the terminal device can regard the resource scheduling information for scheduling PDSCH 1 as an error case. PDSCH 2 scheduled by DCI 1 arrives after the second time period. Therefore, the terminal device can receive PDSCH 2 normally.

[0157] Referring to Figure 10B , the terminal device can receive DCI 1 and DCI 2 on BWP 1, wherein DCI 1 includes resource scheduling information, and the resource scheduling information can indicate PDSCH 1 and PDSCH 2. DCI 2 can include BWP indication information, and the BWP indication information can indicate BWP 2. After the terminal device receives DCI 2, the delay for switching from BWP 1 to BWP 2 for RF retuning and / or baseband parameter reconfiguration is the second time period. PDSCH 1 is located in the second time period, and PDSCH 2 is located in the time domain after switching to BWP 2. The terminal device can regard the resource scheduling information for scheduling PDSCH 1 in DCI 1 as an error case. However, the terminal device can receive PDSCH 2 normally.

[0158] Optionally, as shown in FIG7B , after step 420a, the wireless communication method provided in the embodiment of the present application may further perform the following steps:

[0159] Step 440: After the terminal device completes communication on the second BWP, the activated BWP is the second BWP.

[0160] It should be understood that in step 430, the terminal device needs to perform two RF retuning and / or baseband parameter reconfiguration. The terminal device cannot transmit or receive during the two processing delays, resulting in a certain amount of delay overhead. Based on this, in step 440 of the embodiment of the present application, if there is no data transmission for the terminal device within the target duration after the time domain resource for transmitting the first data, the terminal device can only perform one active BWP switch. After switching the active BWP from the first BWP to the second BWP, the terminal device can keep the active BWP unchanged.

[0161] In other words, the terminal device receives first information on the first BWP, which indicates the second BWP. Based on the first information, the terminal device switches the active BWP from the first BWP to the second BWP. This allows the terminal device to communicate on the second BWP and, after completing the communication on the second BWP, continue to use the second BWP as the active BWP, avoiding unnecessary BWP switching.

[0162] In some embodiments, the first information is further used to indicate that the first data is transmitted on the first time-frequency resource of the second BWP. Based on this, the terminal device completing communication on the second BWP may mean that the terminal device completes the transmission of the first data on the first time-frequency resource of the second BWP.

[0163] That is to say, after the terminal device completes the first data transmission on the first time-frequency resource, the activated BWP is still the second BWP.

[0164] In this embodiment of the present application, the first information may be a scheduling DCI. The scheduling DCI may indicate the second BWP and the first time-frequency resource for transmitting the first data on the second BWP. The scheduling DCI may also indicate only the second BWP without being used for scheduling data. This embodiment of the present application does not limit the content indicated by the scheduling DCI.

[0165] In some embodiments, the terminal device may transmit the first data on the second BWP in step 420a and step 440. Therefore, the feedback information of the terminal device regarding the first data transmitted on the second BWP may be transmitted via the second BWP.

[0166] It should be understood that the terminal device can switch the active BWP from the first BWP to the second BWP based on the first information, and after the terminal device completes the transmission of the first data using the first time-frequency resource of the second BWP, the second BWP is still used as the active BWP. Therefore, in this embodiment, the terminal device can use the activated second BWP to transmit feedback information regarding the first data.

[0167] It should be understood that the first BWP and the second BWP may include only a downlink BWP, or may include a paired uplink BWP and downlink BWP. That is, the BWP indicated by the BWP indication information corresponds to an uplink BWP and a downlink BWP, and both BWPs are simultaneously activated. For example, for an FDD system, the first BWP and the second BWP may include only a downlink BWP. For a TDD system, the first BWP and the second BWP may include a paired uplink BWP and downlink BWP.

[0168] It should be noted that, in the case where the second BWP may include a paired uplink BWP and downlink BWP, the terminal device may transmit feedback information for the above data on the uplink BWP corresponding to the second BWP.

[0169] In an embodiment of the present application, the terminal device may include a primary receiver and a secondary receiver.

[0170] It should be understood that the primary receiver can be a common receiver in a terminal device. The secondary receiver can be a low-cost, low-complexity, and low-power receiver. Optionally, the primary receiver can receive data with a larger frequency bandwidth, while the secondary receiver, due to cost and complexity constraints, can receive data with a smaller frequency bandwidth.

[0171] Exemplarily, the secondary receiver may be configured to receive the special signal in the above embodiments, such as WUS, energy saving signal, paging signal, etc. The special signal in the embodiment of the present application may be used to wake up the primary receiver.

[0172] In an embodiment of the present application, the wireless communication method provided in the embodiment of the present application may further include the following steps:

[0173] The terminal device turns off the main receiver according to the first information.

[0174] The first information in the embodiment of the present application may be received on a main receiver of the terminal device. The first information may indicate a second BWP, which is different from the first BWP.

[0175] It should be noted that the second BWP is a special BWP. When the terminal device determines that the BWP indicated by the BWP indication information in the first information is the special second BWP, it can actively shut down the main receiver and use only the auxiliary receiving communication to save power.

[0176] Exemplarily, the terminal device may store a list of identification information of special BWPs. If the terminal device determines that the identification information of the BWP indicated by the first information is included in the list of identification information of special BWPs, it actively turns off the main receiver and communicates through the auxiliary receiver.

[0177] Optionally, based on the above embodiment, the wireless communication method provided in the embodiment of the present application may further include the following steps:

[0178] The terminal device receives second information through the auxiliary receiver, where the second information indicates to wake up the main receiver.

[0179] It is understandable that after the terminal device turns off the main receiver, it can receive information through the auxiliary receiver to reduce the power consumption of the terminal device.

[0180] When the network device needs to wake up the primary receiver of a terminal device, it can send a second message to the terminal device. The terminal device then receives the second message via the currently active secondary receiver and wakes up the primary receiver according to the instructions in the second message. This allows the primary receiver to resume data / information transmission and reception.

[0181] In some embodiments, the second information may be control information, such as DCI, or the second information may be a special signal in the above embodiment, which is not limited in the present embodiment.

[0182] Optionally, the second information may be received on the second BWP. It is understandable that the terminal device may transmit and receive data / information on the second BWP after turning off the main receiver.

[0183] It should be noted that, in the embodiment of the present application, when the terminal device turns off the main receiver, it can be considered that the terminal device switches the activated first BWP to the second BWP. When the terminal device wakes up the main receiver, it can be understood as switching the activated BWP from the second BWP to the first BWP.

[0184] In a possible implementation, a search space of the PDCCH may be configured on the second BWP, and the terminal device may receive control information (eg, DCI) on the second BWP and switch to another BWP.

[0185] In another possible implementation, a special signal can carry BWP indication information. This special signal can simultaneously wake up the terminal device's primary receiver and implement BWP switching. For example, when a terminal device requires downlink data transmission, the network device can send a special signal to instruct the terminal device to wake up the primary receiver. Furthermore, the special signal can include BWP indication information, switching the active BWP to a first BWP with a higher bandwidth for data transmission.

[0186] In summary, in the embodiments of the present application, the terminal device can switch the active BWP from the first BWP to the second BWP based on the first information and communicate on the second BWP. After the terminal device completes the communication on the second BWP, it can actively switch the active BWP from the second BWP back to the original first BWP, or the terminal device can maintain the active BWP as the second BWP.

[0187] In some embodiments, the first information may further indicate whether the terminal device switches the activated BWP from the second BWP to the first BWP after completing the communication on the second BWP.

[0188] It is understandable that the terminal device can determine whether to perform step 430 or step 440 after step 420a based on the first information. In other words, the terminal device can determine whether to switch the active BWP from the second BWP to the first BWP or to maintain the active BWP as the second BWP after completing communication on the second BWP based on the first information.

[0189] It should be understood that if the network device still has data scheduling for the terminal device in the future, it can instruct the terminal device through the first information to switch the activated BWP from the second BWP to the first BWP after completing the communication on the second BWP. That is, the terminal device can implement the above steps 420a and 430.

[0190] If the network device does not subsequently schedule data for the terminal device, it can instruct the terminal device through the first information to continue using the second BWP as the active BWP after completing communication on the second BWP. That is, the terminal device can implement the above steps 420a and 440.

[0191] Optionally, the first information may include a first switching indication field, and when the value of the first switching indication field is different, it instructs the terminal device to perform different operations. Exemplarily, when the value of the first switching indication field is a first value (for example, 0 or 1), it can instruct the terminal device not to perform an activated BWP switch after completing communication on the second BWP, that is, after the terminal device completes communication on the second BWP, it continues to use the second BWP as the activated BWP. When the value of the first switching indication field is a second value (for example, 1 or 0), it can instruct the terminal device to perform an activated BWP switch after completing communication on the second BWP, that is, after the terminal device completes communication on the second BWP, it switches the activated second BWP to the first BWP.

[0192] In summary, the network device can instruct the terminal device whether to switch the activated BWP from the second BWP back to the original first BWP through the first information according to actual needs, thereby improving the flexibility of data transmission.

[0193] In an embodiment of the present application, as shown in FIG11 , the terminal device communicates via the second BWP in step 420, which can also be implemented in the following manner:

[0194] Step 420b: The terminal device maintains the activated BWP as the first BWP and communicates on the second BWP.

[0195] In the embodiment of the present application, after receiving the first information, the terminal device may not change the activation state of the currently activated BWP. In other words, after receiving the first information, the terminal device may maintain the first BWP as the activated BWP and not switch the activated BWP during the process of responding to the first information.

[0196] It is understandable that after receiving the first information, the terminal device may keep the activated BWP as the first BWP unchanged. The terminal device may communicate with the terminal device on the second BWP according to the instruction of the first information.

[0197] Optionally, the first information is further used to indicate that the first data is transmitted on the first time-frequency resource of the second BWP. Based on this, the terminal device communicating on the second BWP may refer to the terminal device transmitting the first data on the first time-frequency resource of the second BWP.

[0198] It should be understood that, in step 420b, although the terminal device's activated BWP remains unchanged, the terminal device's underlying hardware still needs to perform two RF resource switches. During the first RF resource switch, the terminal device may perform RF retuning and / or baseband parameter reconfiguration to prepare for communication on the second BWP, switching RF resources from the first BWP to the second BWP. This allows the terminal device to transmit the first data on the first time-frequency resource of the second BWP. During the second RF resource switch, the terminal device may perform RF retuning and / or baseband parameter reconfiguration again, switching RF resources from the second BWP to the first BWP.

[0199] It should be noted that during the above two RF retuning and / or baseband parameter reconfiguration periods, the terminal device is also unable to perform normal transmitting and receiving operations.

[0200] Based on this, in step 420b, the terminal device communicating on the second BWP may include: the terminal device communicating on the second BWP after a second time period. The second time period may at least include a time period during which the terminal device switches radio frequency resources from the first BWP to the second BWP, which may also be referred to as a preparation time period for the terminal device to perform data transmission on the second BWP.

[0201] In other words, the terminal device can avoid the second time period and not transmit data during the first time period. After the second time period, communication is performed on the second BWP, thereby avoiding the problem of data loss caused by the terminal device being unable to perform sending and receiving operations during the second time period, thereby ensuring correct data transmission.

[0202] Furthermore, in step 420b, after the terminal device completes transmission of the first data on the second BWP, the terminal device must wait for a first time period before it can resume communication on the first BWP. The first time period may include at least the time period during which the terminal device switches radio frequency resources from the second BWP to the first BWP, and may also be referred to as a preparation period for the terminal device to perform data transmission on the first BWP.

[0203] Similarly, the terminal device may avoid the first time period and not transmit data during the first time period. After the first time period, communication may be resumed on the first BWP, thereby avoiding the problem of data loss caused by the terminal device being unable to perform sending and receiving operations during the first time period, thereby ensuring correct data transmission.

[0204] It should be noted that, in some embodiments, when the terminal device receives the first information in step 420b, maintains the activated BWP as the first BWP, and communicates on the second BWP, the terminal device may keep the main receiver turned on, and the terminal device may continue to send and receive data / information through the main receiver after transmitting the data scheduled by the first information on the auxiliary receiver. In other embodiments, when the terminal device receives the first information in step 420b, maintains the activated BWP as the first BWP, and communicates on the second BWP, the terminal device may turn off the main receiver and turn on the auxiliary receiver when switching the radio frequency resources from the first BWP to the second BWP, and turn off the auxiliary receiver and turn on the main receiver when switching the radio frequency resources from the second BWP to the first BWP. The embodiments of the present application are not limited to this.

[0205] In some embodiments, in step 420b, the terminal device may transmit the first data on the second BWP, wherein the feedback information of the terminal device in response to the first data transmitted on the second BWP may be transmitted via the first BWP or the second BWP.

[0206] It should be understood that in the embodiment of the present application, the terminal device may transmit feedback information for the data on the second BWP before performing the second radio resource switching. The terminal device may also transmit feedback information for the data on the activated first BWP after completing the second radio resource switching, and the embodiment of the present application does not limit this.

[0207] It should be noted that the terminal device can choose any of the above methods to send data feedback information, and the embodiments of the present application do not limit this.

[0208] It should be understood that the first BWP and the second BWP may include only a downlink BWP, or may include a paired uplink BWP and downlink BWP. That is, the BWP indicated by the BWP indication information corresponds to an uplink BWP and a downlink BWP, and both BWPs are simultaneously activated. For example, for an FDD system, the first BWP and the second BWP may include only a downlink BWP. For a TDD system, the first BWP and the second BWP may include a paired uplink BWP and downlink BWP.

[0209] It should be noted that the first BWP and the second BWP may include a paired uplink BWP and downlink BWP. In this way, the terminal device can transmit feedback information for the above data on the uplink BWP corresponding to the first BWP, or the terminal device can transmit feedback information for the above data on the uplink BWP corresponding to the second BWP.

[0210] In some embodiments, the first information may further indicate whether to switch the activated BWP from the first BWP to the second BWP.

[0211] That is, the terminal device may perform step 420a or step 420b according to the first information. That is, the first information may indicate whether the terminal device, after receiving the first information, switches the active BWP from the first BWP to the second BWP and performs communication on the second BWP, or maintains the active BWP as the first BWP and performs communication on the second BWP.

[0212] Optionally, the first information may include a second switching indication field. When the value of the second switching indication field is different, the terminal device is instructed to perform different operations. Exemplarily, when the value of the second switching indication field is a first value (for example, 0 or 1), the terminal device may be instructed to switch the activated BWP to the second BWP. When the value of the first switching indication field is a second value (for example, 1 or 0), the terminal device may be instructed to keep the activated BWP unchanged as the first BWP.

[0213] In some embodiments, the first information may simultaneously indicate whether to switch the active BWP from the first BWP to the second BWP, and indicate whether to switch the active BWP from the second BWP to the first BWP after the terminal device completes communication on the second BWP. In other words, the first information may include a first switching indication field and a second switching indication field.

[0214] Exemplarily, the second switching indication field indicates a first value, and the first switching indication field indicates a first value. The terminal device can determine to switch the activated BWP to the second BWP for communication, and after completing communication on the second BWP, not switch the activated BWP, and continue to use the second BWP as the activated BWP. The second switching indication field indicates a first value, and the first switching indication field indicates a second value. The terminal device can determine to switch the activated BWP to the second BWP for communication, and after completing communication on the second BWP, actively switch the activated BWP back to the original BWP. In addition, the second switching indication field indicates a second value, and the first switching indication field indicates the first value or the second value. The terminal device can determine to keep the activated BWP unchanged as the first BWP and only communicate on the second BWP.

[0215] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0216] It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply a precedence in the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate the first direction of transmission of signals or data from a site to a user equipment in a cell, "uplink" is used to indicate the second direction of transmission of signals or data from a user equipment in a cell to a site, and "sidelink" is used to indicate the third direction of transmission of signals or data from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. Specifically, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0217] FIG12 is a schematic diagram of the structure of a wireless communication device provided in an embodiment of the present application, which is applied to a terminal device. As shown in FIG12 , the wireless communication device includes:

[0218] The first transceiver unit 1201 is configured to receive first information on a first bandwidth part BWP, where the first information is used to indicate a second BWP; the first BWP is a BWP currently activated by the terminal device;

[0219] The first transceiver unit 1201 is further configured to communicate on the second BWP.

[0220] In some embodiments, the first transceiver unit 1201 may include a switching unit configured to switch the activated BWP from the first BWP to the second BWP.

[0221] In some embodiments, the switching unit is further configured to switch the activated BWP from the second BWP to the first BWP after completing communication on the second BWP.

[0222] In some embodiments, the first information is further used to indicate transmission of first data on a first time-frequency resource of the second BWP, and the first transceiver unit 1201 may further be configured to complete transmission of the first data on the first time-frequency resource.

[0223] In some embodiments, the first transceiver unit 1201 is further configured to transmit feedback information of the first data on the first BWP;

[0224] or,

[0225] Transmit feedback information of the first data on the second BWP.

[0226] In some embodiments, the switching unit is further configured to switch the terminal device to the first BWP after a first time period.

[0227] In some embodiments, the terminal device includes a primary receiver and a secondary receiver; the wireless communication apparatus further includes a control unit configured to turn off the primary receiver according to the first information.

[0228] In some embodiments, the first transceiver unit 1201 is further configured to receive second information through the secondary receiver, where the second information indicates waking up the primary receiver.

[0229] In some embodiments, the second information is received on the second BWP.

[0230] In some embodiments, the first transceiver unit 1201 is further configured to keep the activated BWP as the first BWP and perform the communication on the second BWP.

[0231] In some embodiments, the first information is further used to indicate transmission of the first data on the first time-frequency resource of the second BWP; the first transceiver unit 1201 is further configured to transmit the first data on the first time-frequency resource of the second BWP.

[0232] In some embodiments, the first transceiver unit 1201 is further configured to transmit feedback information of the first data to the terminal device on the first BWP;

[0233] or,

[0234] The terminal device transmits feedback information of the first data on the second BWP.

[0235] In some embodiments, the first information is further used to indicate whether to switch the activated BWP from the first BWP to the second BWP.

[0236] In some embodiments, the first information is further used to indicate whether to switch the activated BWP from the second BWP to the first BWP after the communication is completed on the second BWP.

[0237] In some embodiments, the second BWP is at least one of the following:

[0238] The BWP where the wake-up signal WUS is located, the BWP where the energy-saving signal is located, and the BWP where the paging signal is located.

[0239] In some embodiments, the first transceiver unit 1201 is further configured to communicate on the second BWP after a second time period; wherein the second time period is the time period in which the terminal device switches the activated BWP from the first BWP to the second BWP, or the second time period is the preparation time period for the terminal device to communicate on the second BWP.

[0240] Those skilled in the art should understand that the relevant description of the above-mentioned wireless communication device in the embodiment of the present application can be understood with reference to the relevant description of the wireless communication method in the embodiment of the present application.

[0241] FIG13 is a second schematic diagram of the structure of a wireless communication device provided in an embodiment of the present application, which is applied to a network device. As shown in FIG13 , the wireless communication device includes:

[0242] The second transceiver unit 1301 is configured to send first information to the terminal device on the first BWP, where the first information is used to indicate the second BWP; the first BWP is the BWP currently activated by the terminal device;

[0243] The second transceiver unit 1301 is further configured to communicate with the terminal device on the second BWP.

[0244] In some embodiments, the wireless communication apparatus further includes a determining unit configured to determine whether the terminal device switches the activated BWP from the first BWP to the second BWP.

[0245] In some embodiments, the determining unit is further configured to determine that the BWP activated by the terminal device is switched from the second BWP to the first BWP after completing communication with the terminal device on the second BWP.

[0246] In some embodiments, the first information is further used to indicate the transmission of first data on the first time-frequency resource of the second BWP, and the determination unit is further configured to complete the transmission of the first data with the terminal device on the first time-frequency resource.

[0247] In some embodiments, the second transceiver unit 1301 is further configured to transmit feedback information of the first data on the first BWP;

[0248] or,

[0249] Transmit feedback information of the first data on the second BWP.

[0250] In some embodiments, the second transceiver unit 1301 is further configured to determine, after a first time period, that the terminal device switches to the first BWP.

[0251] In some embodiments, the determining unit is further configured to determine that the BWP that remains activated by the terminal device is the first BWP;

[0252] The second transceiver unit 1301 is further configured to communicate with the terminal device on the second BWP.

[0253] In some embodiments, the first information is further used to indicate transmission of the first data on the first time-frequency resource of the second BWP, and the second transceiver unit 1301 is further configured to transmit the first data on the first time-frequency resource of the second BWP.

[0254] In some embodiments, the second transceiver unit 1301 is further configured to transmit feedback information of the first data on the first BWP;

[0255] Alternatively, feedback information of the first data is transmitted on the second BWP.

[0256] In some embodiments, the terminal device includes a primary receiver and a secondary receiver; the first information is further used to instruct to turn off the primary receiver.

[0257] In some embodiments, the second transceiver unit 1301 is further configured to send second information, where the second indication wakes up the primary receiver.

[0258] In some embodiments, the second information is transmitted on the second BWP.

[0259] In some embodiments, the first information is further used to indicate whether to switch the activated BWP from the first BWP to the second BWP.

[0260] In some embodiments, the first information is further used to indicate whether to switch the activated BWP from the second BWP to the first BWP after completing communication on the second BWP.

[0261] In some embodiments, the second BWP is at least one of the following:

[0262] The BWP where the WUS is located, the BWP where the energy-saving signal is located, and the BWP where the paging signal is located.

[0263] In some embodiments, the second transceiver unit 1301 is further configured to communicate on the second BWP after a second time period.

[0264] Those skilled in the art should understand that the relevant description of the above-mentioned wireless communication device in the embodiment of the present application can be understood with reference to the relevant description of the wireless communication method in the embodiment of the present application.

[0265] Figure 14 is a schematic diagram of a communication device 1400 provided in an embodiment of the present application. The communication device can be a terminal device or a network device. The communication device 1400 shown in Figure 14 includes a processor 1410, which can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0266] Optionally, as shown in FIG14 , the communication device 1400 may further include a memory 1420. The processor 1410 may call and execute a computer program from the memory 1420 to implement the method in the embodiment of the present application.

[0267] The memory 1420 may be a separate device independent of the processor 1410 , or may be integrated into the processor 1410 .

[0268] Optionally, as shown in FIG14 , the communication device 1400 may further include a transceiver 1430 , and the processor 1410 may control the transceiver 1430 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0269] The transceiver 1430 may include a transmitter and a receiver. The transceiver 1430 may further include an antenna, and the number of antennas may be one or more.

[0270] Optionally, the communication device 1400 may specifically be a network device in an embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0271] Optionally, the communication device 1400 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0272] Figure 15 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1500 shown in Figure 15 includes a processor 1510, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0273] Optionally, as shown in FIG15 , the chip 1500 may further include a memory 1520. The processor 1510 may call and execute a computer program from the memory 1520 to implement the method in the embodiment of the present application.

[0274] The memory 1520 may be a separate device independent of the processor 1510 , or may be integrated into the processor 1510 .

[0275] Optionally, the chip 1500 may further include an input interface 1530. The processor 1510 may control the input interface 1530 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0276] Optionally, the chip 1500 may further include an output interface 1540. The processor 1510 may control the output interface 1540 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0277] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0278] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0279] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0280] FIG16 is a schematic block diagram of a communication system 1600 provided in an embodiment of the present application. As shown in FIG16 , the communication system 1600 includes a terminal device 1610 and a network device 1620 .

[0281] Among them, the terminal device 1610 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1620 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0282] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0283] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0284] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0285] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0286] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0287] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0288] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0289] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0290] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0291] The embodiment of the present application also provides a computer program.

[0292] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0293] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0294] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0295] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0296] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0297] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0298] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0299] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0300] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, the method comprising: The terminal device receives first information on the first bandwidth part BWP, where the first information is used to indicate the second BWP; The first BWP is the BWP currently activated by the terminal device; The terminal device communicates on the second BWP.

2. The method according to claim 1, wherein The terminal device communicates on the second BWP, including: The terminal device switches the activated BWP from the first BWP to the second BWP.

3. The method according to claim 2, wherein: The method further comprises: After completing communication on the second BWP, the terminal device switches the activated BWP from the second BWP to the first BWP.

4. The method according to claim 3, wherein: The first information is further used to instruct transmission of first data on the first time-frequency resource of the second BWP, and the terminal device completes communication on the second BWP, including: The terminal device completes the transmission of the first data in the first time-frequency resource.

5. The method according to claim 4, wherein The method further comprises: The terminal device transmits feedback information of the first data on the first BWP; or, The terminal device transmits feedback information of the first data on the second BWP.

6. The method according to any one of claims 3 to 5, wherein: The switching the activated BWP from the second BWP to the first BWP includes: After a first time period, the terminal device switches to the first BWP.

7. The method according to claim 1, wherein The terminal device communicates on the second BWP, including: The terminal device maintains the first BWP as the activated BWP and performs the communication on the second BWP.

8. The method according to claim 7, wherein: The first information is further used to instruct transmission of the first data on the first time-frequency resource of the second BWP, and the communicating on the second BWP includes: The terminal device transmits the first data on the first time-frequency resource of the second BWP.

9. The method according to claim 8, wherein The terminal device transmits feedback information of the first data on the first BWP; or, The terminal device transmits feedback information of the first data on the second BWP.

10. The method according to any one of claims 1 to 9, wherein: The terminal device includes a primary receiver and a secondary receiver, and the method further includes: The terminal device turns off the main receiver according to the first information.

11. The method according to claim 10, wherein: The method further comprises: The terminal device receives second information through the secondary receiver, where the second information indicates to wake up the primary receiver.

12. The method according to claim 11, wherein The second information is received on the second BWP.

13. The method according to any one of claims 1 to 12, wherein: The first information is further used to indicate whether to switch the activated BWP from the first BWP to the second BWP.

14. The method according to any one of claims 1 to 13, wherein: The first information is further used to indicate whether to switch the activated BWP from the second BWP to the first BWP after the communication is completed on the second BWP.

15. The method according to any one of claims 1 to 14, wherein: The second BWP includes at least one of the following: The BWP where the wake-up signal WUS is located, the BWP where the energy-saving signal is located, and the BWP where the paging signal is located.

16. The method according to any one of claims 1 to 15, wherein: The terminal device communicates on the second BWP, including: After a second time period, the terminal device performs the communication on the second BWP.

17. A wireless communication method, the method comprising: The network device sends first information to the terminal device on the first bandwidth part BWP, where the first information is used to indicate the second BWP; The first BWP is the BWP currently activated by the terminal device; The network device communicates with the terminal device on the second BWP.

18. The method according to claim 17, wherein The network device communicates with the terminal device on the second BWP, including: The network device determines that the terminal device switches the activated BWP from the first BWP to the second BWP.

19. The method according to claim 18, wherein The method further comprises: After the network device completes communication with the terminal device on the second BWP, the network device determines that the BWP activated by the terminal device is switched from the second BWP to the first BWP.

20. The method according to claim 19, wherein The first information is further used to instruct that the first data be transmitted on the first time-frequency resource of the second BWP, and the network device completes communication with the terminal device on the second BWP, including: The network device completes the transmission of the first data with the terminal device using the first time-frequency resource.

21. The method according to claim 20, wherein The method further comprises: The network device transmits feedback information of the first data on the first BWP; or, The network device transmits feedback information of the first data on the second BWP.

22. The method according to any one of claims 19 to 21, wherein: The determining that the BWP activated by the terminal device is switched from the second BWP to the first BWP includes: After a first time period, the network device determines that the terminal device switches to the first BWP.

23. The method according to claim 17, wherein The network device communicates with the terminal device on the second BWP, including: The network device determines that the BWP maintained activated by the terminal device is the first BWP, and performs the communication with the terminal device on the second BWP.

24. The method according to claim 23, wherein The first information is further used to instruct transmission of first data on the first time-frequency resource of the second BWP, and the communicating with the terminal device on the second BWP includes: The network device transmits the first data on the first time-frequency resource of the second BWP.

25. The method according to claim 24, wherein The network device transmits feedback information of the first data on the first BWP; or, The network device transmits feedback information of the first data on the second BWP.

26. The method according to any one of claims 17 to 25, wherein: The terminal device includes a primary receiver and a secondary receiver, and the first information is further used to instruct to turn off the primary receiver.

27. The method according to claim 26, wherein The method further comprises: The network device sends second information, and the second indication wakes up the primary receiver.

28. The method according to claim 27, wherein The second information is transmitted on the second BWP.

29. The method according to any one of claims 17 to 28, wherein: The first information is further used to indicate whether to switch the activated BWP from the first BWP to the second BWP.

30. The method according to any one of claims 17 to 29, wherein: The first information is further used to indicate whether to switch the activated BWP from the second BWP to the first BWP after the communication is completed on the second BWP.

31. The method according to any one of claims 17 to 30, wherein: The second BWP includes at least one of the following: The BWP where the wake-up signal WUS is located, the BWP where the energy-saving signal is located, and the BWP where the paging signal is located.

32. The method according to any one of claims 17 to 31, wherein: The network device communicates with the terminal device on the second BWP, including: After a second time period, the network device performs the communication on the second BWP.

33. A wireless communication device, applied to a terminal device, comprising: A first transceiver unit is configured to receive first information on a first bandwidth part BWP, where the first information is used to indicate a second BWP; The first BWP is the BWP currently activated by the terminal device; The first transceiver unit is further configured to communicate on the second BWP.

34. A wireless communication device, applied to a network device, comprising: The second transceiver unit is configured to send first information to the terminal device on the first bandwidth part BWP, where the first information is used to indicate the second BWP; The first BWP is the BWP currently activated by the terminal device; The second transceiver unit is further configured to communicate with the terminal device on the second BWP.

35. A terminal device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 16.

36. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 17 to 32.

37. A chip comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as described in any one of claims 1 to 16, or so that a device equipped with the chip executes a method as described in any one of claims 17 to 32.

38. A computer storage medium for storing a computer program, wherein the computer program causes a terminal device to execute the method according to any one of claims 1 to 16, or the computer program causes a network device to execute the method according to any one of claims 17 to 32.

39. A computer program product comprising computer program instructions, wherein the computer program instructions enable a terminal device to execute the method according to any one of claims 1 to 16, or the computer program instructions enable a network device to execute the method according to any one of claims 17 to 32.

40. A computer program, wherein the computer program causes a terminal device to execute the method according to any one of claims 1 to 16, or the computer program causes a network device to execute the method according to any one of claims 17 to 32.

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