Method and device for parameter setting

Abstract

Various embodiments of the present disclosure provide a method for parameter setting. A method that may be implemented by a network node includes determining, based on one or more parameters of a terminal device, whether to trigger bandwidth portion configuration for subcarrier spacing switching for the terminal device. The method may also include, in response to determining that the bandwidth portion configuration is to be triggered for the terminal device, sending an indicator to the terminal device to trigger the bandwidth portion configuration for the subcarrier spacing switching.

Description

Technical Field

[0001] The present disclosure relates generally to communication networks, and more particularly, to methods and apparatus for parameter setting. Background Art

[0002] This section introduces various aspects that may help to better understand the present disclosure. Accordingly, the contents stated in this section should be read in this manner and should not be understood as an admission of what is or is not prior art.

[0003] Communication service providers and network operators are continually faced with the challenge of delivering value and convenience to consumers (e.g., by providing compelling network services and performance). With the rapid development of networking and communication technologies, wireless communication networks such as Long Term Evolution (LTE) networks and New Radio (NR) networks are expected to achieve high service capacity and end-user data rates with lower latency. In order to meet the rapidly growing network demands, an interesting option for the development of communication technologies is to support flexible network configuration with adaptive numerology. The term "numerology" may be used to refer to some parameters related to radio resources used for signal transmission, such as subcarrier spacing (SCS), the length or duration of a cyclic prefix (CP), the length or duration of an orthogonal frequency division multiplexing (OFDM) symbol, the number of symbols contained in a time slot, the time slot duration, etc. Different numerologies and / or parameter settings may be deployed to achieve potential network performance gains through flexible radio resource configuration. Summary of the Invention

[0004] This summary is provided to introduce selected concepts in a simplified form that will be further described in the following detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

[0005] Compared with the LTE parameter set (such as SCS, symbol length, etc.), the most prominent difference in the NR parameter set is that the NR network can support multiple different types of SCS (such as 15kHz, 30kHz, 60kHz, 120kHz, etc.), while in the LTE network, there is only one type of SCS (i.e. 15kHz). Supporting multiple SCS options in the NR network may have many advantages. For example, a parameter set with a smaller SCS can make the system more tolerant to the effects of multipath delay spread; a parameter set with a larger SCS can make it easier to compensate for phase noise. However, there is currently no solution to adaptively adjust the SCS configuration according to different channel conditions and network environments. Therefore, it may be desirable to implement adaptive SCS settings in a more efficient way.

[0006] Various embodiments of the present disclosure propose a solution for adaptive parameter setting, which can achieve SCS switching by triggering the bandwidth part (BWP) configuration of the terminal device (e.g., user equipment (UE)) based on the measurement and / or service information of the terminal device, thereby improving the flexibility of SCS configuration while enhancing resource utilization.

[0007] According to a first aspect of the present disclosure, a method implemented by a network node (e.g., a base station) is provided. The method includes determining, based on one or more parameters of a terminal device, whether to trigger BWP configuration for SCS handover for the terminal device. The method also includes, in response to determining that the BWP configuration is to be triggered for the terminal device, sending an indicator to the terminal device to trigger the BWP configuration for the SCS handover.

[0008] According to some exemplary embodiments, the BWP configuration may instruct the terminal device to switch from a first BWP to a second BWP.The first BWP and the second BWP may be configured with different SCSs.

[0009] According to some exemplary embodiments, the one or more parameters of the terminal device may include: a speed factor, a multipath factor and / or a service type.

[0010] According to some example embodiments, the one or more parameters of the terminal device may be related to one or more of the following:

[0011] - Uplink (UL) measurement information of the terminal device;

[0012] - Downlink (DL) measurement information of the terminal device; and

[0013] -Service type requirements of the terminal device.

[0014] According to some exemplary embodiments, determining whether to trigger the BWP configuration for the SCS switching for the terminal device based on the one or more parameters of the terminal device may include: in response to the one or more parameters satisfying a first criterion, determining to trigger the BWP configuration for the terminal device to switch from a first SCS to a second SCS. In an embodiment, the second SCS may be larger than the first SCS.

[0015] According to some exemplary embodiments, the first criterion may indicate that a speed factor of the terminal device is greater than a first threshold and a multipath factor of the terminal device is less than a second threshold.

[0016] According to some exemplary embodiments, the first criterion may indicate that a difference between a weight of a speed factor and a weight of a multipath factor of the terminal device is within a first range.

[0017] According to some example embodiments, the first criterion may indicate that a service type of the terminal device is associated with a first delay requirement.

[0018] According to some exemplary embodiments, determining whether to trigger the BWP configuration for the SCS switching for the terminal device based on the one or more parameters of the terminal device may include: in response to the one or more parameters satisfying a second criterion, determining to trigger the BWP configuration for the terminal device to switch from a third SCS to a fourth SCS. In an embodiment, the fourth SCS may be smaller than the third SCS.

[0019] According to some exemplary embodiments, the second criterion may indicate that a speed factor of the terminal device is smaller than a third threshold and a multipath factor of the terminal device is larger than a fourth threshold.

[0020] According to some exemplary embodiments, the second criterion may indicate that a difference between a weight of a speed factor and a weight of a multipath factor of the terminal device is within a second range.

[0021] According to some exemplary embodiments, the second criterion may indicate that a service type of the terminal device is associated with a second delay requirement.

[0022] According to some exemplary embodiments, determining whether to trigger the BWP configuration for the SCS switching for the terminal device based on the one or more parameters of the terminal device may include: in response to the one or more parameters satisfying a third criterion, determining to trigger the BWP configuration for the terminal device for switching from a fifth SCS to a sixth SCS. In an embodiment, the sixth SCS may be associated with an extended CP and be larger than the fifth SCS.

[0023] According to some exemplary embodiments, the third criterion may indicate that a speed factor of the terminal device is greater than a fifth threshold and a multipath factor of the terminal device is greater than a sixth threshold.

[0024] According to some exemplary embodiments, determining whether to trigger the BWP configuration for the SCS switching for the terminal device based on the one or more parameters of the terminal device may include: in response to the one or more parameters satisfying a fourth criterion, determining not to trigger the BWP configuration for the SCS switching for the terminal device.

[0025] According to some exemplary embodiments, the fourth criterion may indicate that a speed factor of the terminal device is less than a seventh threshold and a multipath factor of the terminal device is less than an eighth threshold.

[0026] According to some exemplary embodiments, the fourth criterion may indicate that a difference between a weight of a speed factor and a weight of a multipath factor of the terminal device is within a third range or equal to a specific value.

[0027] According to some exemplary embodiments, the indicator sent to the terminal device may indicate a BWP configured with an SCS to which the terminal device is to switch.

[0028] According to some exemplary embodiments, the indicator may be sent to the terminal device in one or more of the following:

[0029] - Radio Resource Control (RRC) signaling;

[0030] - Downlink Control Information (DCI); and

[0031] - Control element for medium access control (MAC CE).

[0032] According to some exemplary embodiments, the method according to the first aspect of the present disclosure may further include: sending information about a plurality of BWPs having different SCSs available for the terminal device to the terminal device. In an embodiment, the BWP configuration may be used to activate one of the plurality of BWPs for the terminal device.

[0033] According to some exemplary embodiments, the method according to the first aspect of the present disclosure may further include: determining, based on the BWP configuration for the terminal device, a device group to which the terminal device belongs. In an embodiment, each member of the device group may be configured with the same SCS and may be scheduled in a frequency band without a guard band.

[0034] According to a second aspect of the present disclosure, a device that can be implemented as a network node is provided. The device may include one or more processors and one or more memories including computer program code. The one or more memories and the computer program code may be configured to, together with the one or more processors, cause the device to at least: determine, based on one or more parameters of a terminal device, whether to trigger a BWP configuration for SCS handover for the terminal device. According to some exemplary embodiments, the one or more memories and the computer program code may be configured to, together with the one or more processors, cause the device to at least further: in response to determining that the BWP configuration is to be triggered for the terminal device, send an indicator to the terminal device to trigger the BWP configuration for the SCS handover.

[0035] According to some exemplary embodiments, the one or more memories and the computer program code may be configured to, together with the one or more processors, enable the apparatus according to the second aspect of the present disclosure to at least implement any steps of the method according to the first aspect of the present disclosure.

[0036] According to a third aspect of the present disclosure, a computer-readable medium is provided, which contains computer program code. When executed on a computer, the computer program code causes the computer to implement any step of the method according to the first aspect of the present disclosure.

[0037] According to a fourth aspect of the present disclosure, an apparatus that can be implemented as a network node is provided. The apparatus may include a determining unit and a sending unit. According to some exemplary embodiments, the determining unit is operable to perform at least the determining step of the method according to the first aspect of the present disclosure. The sending unit is operable to perform at least the sending step of the method according to the first aspect of the present disclosure.

[0038] According to a fifth aspect of the present disclosure, a method implemented by a terminal device (e.g., a UE) is provided. The method includes receiving an indicator from a network node to trigger a BWP configuration for an SCS handover for the terminal device. The BWP configuration may be based at least in part on one or more parameters of the terminal device. The method according to the fifth aspect of the present disclosure further includes, in response to receiving the indicator from the network node, triggering the BWP configuration for the SCS handover.

[0039] According to some exemplary embodiments, the BWP configuration according to the fifth aspect of the present disclosure may correspond to the BWP configuration according to the first aspect of the present disclosure. Therefore, the BWP configurations according to the first and fifth aspects of the present disclosure may have the same or similar content and / or feature elements.

[0040] According to some exemplary embodiments, one or more parameters of the terminal device according to the fifth aspect of the present disclosure may correspond to one or more parameters of the terminal device according to the first aspect of the present disclosure. Therefore, one or more parameters of the terminal devices according to the first and fifth aspects of the present disclosure may have the same or similar content and / or feature elements.

[0041] According to some exemplary embodiments, triggering the BWP configuration for the SCS switching may include: implementing a BWP switching from a first SCS to a second SCS. In an embodiment, the second SCS may be larger than the first SCS, and the one or more parameters satisfy a first criterion (e.g., the first criterion described according to the first aspect of the present disclosure).

[0042] According to some exemplary embodiments, triggering the BWP configuration for the SCS switching may include: implementing a BWP switching from a third SCS to a fourth SCS. In an embodiment, the fourth SCS may be smaller than the third SCS, and the one or more parameters satisfy a second criterion (e.g., the second criterion described according to the first aspect of the present disclosure).

[0043] According to some exemplary embodiments, triggering the BWP configuration for the SCS switching may include: performing a BWP switching from a fifth SCS to a sixth SCS. In an embodiment, the sixth SCS may be associated with an extended CP and be larger than the fifth SCS, and the one or more parameters may satisfy a third criterion (e.g., the third criterion described according to the first aspect of the present disclosure).

[0044] According to some exemplary embodiments, the indicator received from the network node may indicate a BWP configured with an SCS to which the terminal device is to switch.

[0045] According to some example embodiments, the indicator may be received from the network node in RRC signaling, DCI and / or MAC CE.

[0046] According to some exemplary embodiments, the method according to the fifth aspect of the present disclosure may further include: receiving information about a plurality of BWPs having different SCSs available for the terminal device from the network node. In an embodiment, the BWP configuration may be used to activate one of the plurality of BWPs for the terminal device.

[0047] According to some exemplary embodiments, the terminal device may belong to a device group. In an embodiment, each member of the device group may be configured with the same SCS and may be scheduled in a frequency band without a guard band.

[0048] According to a sixth aspect of the present disclosure, an apparatus that can be implemented as a terminal device is provided. The apparatus includes one or more processors and one or more memories including computer program code. The one or more memories and the computer program code can be configured to, together with the one or more processors, cause the apparatus to at least: receive an indicator from a network node to trigger a BWP configuration for SCS handover for the terminal device. The BWP configuration can be based at least in part on one or more parameters of the terminal device. According to some exemplary embodiments, the one or more memories and the computer program code can be configured to, together with the one or more processors, cause the apparatus to at least further: trigger the BWP configuration for the SCS handover in response to receiving the indicator from the network node.

[0049] According to some exemplary embodiments, the one or more memories and the computer program code may be configured to, together with the one or more processors, enable the apparatus according to the sixth aspect of the present disclosure to at least implement any steps of the method according to the fifth aspect of the present disclosure.

[0050] According to a seventh aspect of the present disclosure, a computer-readable medium is provided, which contains computer program code. When executed on a computer, the computer program code causes the computer to implement any step of the method according to the fifth aspect of the present disclosure.

[0051] According to an eighth aspect of the present disclosure, an apparatus that can be implemented as a terminal device is provided. The apparatus may include a receiving unit and a triggering unit. According to some exemplary embodiments, the receiving unit is operable to at least perform the receiving step of the method according to the fifth aspect of the present disclosure. The triggering unit is operable to at least perform the triggering step of the method according to the fifth aspect of the present disclosure.

[0052] According to a ninth aspect of the present disclosure, a method implemented in a communication system is provided. The communication system may include a host computer, a base station, and a user equipment (UE). The method may include providing user data at the host computer. Optionally, the method may include initiating, at the host computer, a transmission carrying the user data to the UE via a cellular network including a base station. The base station may implement any of the steps of the method according to the first aspect of the present disclosure.

[0053] According to a tenth aspect of the present disclosure, a communication system including a host computer is provided. The host computer may include processing circuitry configured to provide user data, and a communication interface configured to forward the user data to a cellular network for transmission to a user equipment terminal (UE). The cellular network may include a base station having a radio interface and processing circuitry. The processing circuitry of the base station may be configured to implement any of the steps of the method according to the first aspect of the present disclosure.

[0054] According to an eleventh aspect of the present disclosure, a method implemented in a communication system is provided. The communication system may include a host computer, a base station, and a user equipment (UE). The method may include providing user data at the host computer. Optionally, the method may include initiating, at the host computer, a transmission carrying the user data to the UE via a cellular network including the base station. The UE may implement any steps of the method according to the fifth aspect of the present disclosure.

[0055] According to a twelfth aspect of the present disclosure, a communication system including a host computer is provided. The host computer may include processing circuitry configured to provide user data, and a communication interface configured to forward the user data to a cellular network for transmission to a user equipment (UE). The UE may include a radio interface and processing circuitry. The processing circuitry of the UE may be configured to implement any of the steps of the method according to the fifth aspect of the present disclosure.

[0056] According to a thirteenth aspect of the present disclosure, a method implemented in a communication system is provided. The communication system may include a host computer, a base station, and a user equipment terminal (UE). The method may include: receiving, at the host computer, user data transmitted from the UE to the base station. The UE may implement any of the steps of the method according to the fifth aspect of the present disclosure.

[0057] According to a fourteenth aspect of the present disclosure, a communication system including a host computer is provided. The host computer may include a communication interface configured to receive user data originating from a transmission from a UE to a base station. The UE may include a radio interface and processing circuitry. The processing circuitry of the UE may be configured to implement any of the steps of the method according to the fifth aspect of the present disclosure.

[0058] According to a fifteenth aspect of the present disclosure, a method implemented in a communication system is provided. The communication system may include a host computer, a base station, and a user equipment terminal (UE). The method may include: receiving, at the host computer, from the base station user data originating from a transmission received by the base station from the user equipment terminal. The base station may implement any of the steps of the method according to the first aspect of the present disclosure.

[0059] According to a sixteenth aspect of the present disclosure, a communication system is provided, which may include a host computer. The host computer may include a communication interface configured to receive user data originating from a transmission from a UE to a base station. The base station may include a radio interface and processing circuitry. The processing circuitry of the base station may be configured to implement any of the steps of the method according to the first aspect of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The present disclosure itself, its preferred mode of use and further objects may best be understood by reference to the following detailed description of the embodiments when read in conjunction with the accompanying drawings, in which:

[0061] Figures 1A-1E is a diagram illustrating an exemplary BWP use case according to some embodiments of the present disclosure;

[0062] Figures 2A-2B is a diagram illustrating exemplary information elements according to some embodiments of the present disclosure;

[0063] Figure 3Ais a diagram illustrating an exemplary adaptive parameter setting process according to an embodiment of the present disclosure;

[0064] Figure 3B is a diagram illustrating an exemplary BWP configuration according to an embodiment of the present disclosure;

[0065] Figure 4A is a diagram illustrating an exemplary calculation of main influencing factors according to an embodiment of the present disclosure;

[0066] Figure 4B is a diagram illustrating an exemplary frequency configuration according to an embodiment of the present disclosure;

[0067] Figure 5A is a flowchart illustrating a method according to some embodiments of the present disclosure;

[0068] Figure 5B is a flow chart illustrating another method according to some embodiments of the present disclosure;

[0069] Figure 6A is a block diagram illustrating an apparatus according to some embodiments of the present disclosure;

[0070] Figure 6B is a block diagram illustrating another apparatus according to some embodiments of the present disclosure;

[0071] Figure 6C is a block diagram illustrating yet another apparatus according to some embodiments of the present disclosure;

[0072] Figure 7 is a block diagram illustrating a telecommunications network connected to a host computer via an intermediary network according to some embodiments of the present disclosure;

[0073] Figure 8 is a block diagram illustrating a host computer communicating with a UE over a partially wireless connection via a base station according to some embodiments of the present disclosure;

[0074] Figure 9 is a flowchart illustrating a method implemented in a communication system according to an embodiment of the present disclosure;

[0075] Figure 10 is a flowchart illustrating a method implemented in a communication system according to an embodiment of the present disclosure;

[0076] Figure 11 is a flowchart illustrating a method implemented in a communication system according to an embodiment of the present disclosure; and

[0077] Figure 12 is a flowchart illustrating a method implemented in a communication system according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0078] Embodiments of the present disclosure are described in detail with reference to the accompanying drawings. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thereby implement the present disclosure, and not to imply any limitation in terms of the scope of the present disclosure. References to features, advantages or similar language throughout the specification do not mean that all features and advantages that can be implemented in accordance with the present disclosure should be in or just in any single embodiment of the present disclosure. On the contrary, language relating to the features and advantages is understood to mean that the specific features, advantages or characteristics described in conjunction with the embodiments are included in at least one embodiment of the present disclosure. In addition, the features, advantages and characteristics of the present disclosure described can be combined in one or more embodiments in any appropriate manner. Those skilled in the relevant art will recognize that the present disclosure can be practiced without one or more specific features or advantages of a particular embodiment. In other cases, additional features and advantages can be found in certain embodiments, which may not appear in all embodiments of the present disclosure.

[0079] As used herein, the term "communication network" refers to a network that complies with any suitable communication standard, such as New Radio (NR), Long Term Evolution (LTE), LTE-Advanced, Wideband Code Division Multiple Access (WCDMA), High Speed ​​Packet Access (HSPA), etc. In addition, communication between terminal devices and network nodes in the communication network may be implemented according to any suitable communication protocol, including but not limited to first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), 4G, 4.5G, 5G communication protocols and / or any other protocol currently known or developed in the future.

[0080] The term "network node" refers to a network device in a communication network through which a terminal device accesses the network and receives services from it. A network node may refer to a base station (BS), an access point (AP), a multi-cell / multicast coordination entity (MCE), a controller, or any other suitable device in a wireless communication network. A BS may be, for example, a NodeB (NodeB or NB), an evolved NodeB (eNodeB or eNB), a next-generation NodeB (gNodeB or gNB), a remote radio unit (RRU), a radio head (RH), a remote radio head (RRH), a repeater, a low-power node such as a femtocell or a picocell, and the like.

[0081] Some further examples of network nodes include: MSR radio equipment such as a multi-standard radio (MSR) BS, a network controller such as a radio network controller (RNC) or a base station controller (BSC), a base transceiver station (BTS), a transmission point, a transmission node and / or a positioning node, etc. However, more generally, a network node may represent any suitable device (or group of devices) that is capable of, configured to, arranged to and / or operable to enable and / or provide a terminal device with access to a wireless communication network or to provide some services to a terminal device that has access to the wireless communication network.

[0082] The term "terminal device" refers to any terminal device that can access a communication network and receive services therefrom. By way of example and not limitation, a terminal device may refer to a mobile terminal, user equipment (UE), or other suitable device. A UE may be, for example, a subscriber station, a portable subscriber station, a mobile station (MS), or an access terminal (AT). Terminal devices may include, but are not limited to, portable computers, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback devices, mobile phones, cellular phones, smartphones, tablet computers, wearable devices, personal digital assistants (PDAs), vehicles, and the like.

[0083] As another specific example, in the Internet of Things (IoT) scenario, a terminal device may also be referred to as an IoT device, and may represent a machine or other device that performs monitoring, sensing, and / or measurement, etc., and transmits the results of such monitoring, sensing, and / or measurement, etc. to another terminal device and / or network device. In this case, the terminal device may be a machine-to-machine (M2M) device, which may be referred to as a machine-type communication (MTC) device in the context of the Third Generation Partnership Project (3GPP).

[0084] As a specific example, a terminal device may be a UE that implements the 3GPP Narrowband Internet of Things (NB-IoT) standard. Specific examples of such machines or devices are sensors, metering equipment such as power meters, industrial machinery, or household or personal devices such as refrigerators, televisions, and personal wearables such as watches. In other scenarios, a terminal device may represent a vehicle or other equipment, such as a medical instrument capable of monitoring, sensing, and / or reporting its operating status or other functions related to its operation.

[0085] As used herein, the terms "first", "second", etc. refer to different elements. Unless the context clearly indicates otherwise, the singular forms "a" and "an" are also intended to include the plural forms. The terms "include", "comprise", "have", "contain", "include" and / or "comprising" used in the text indicate the presence of the described features, elements and / or components, etc., but do not exclude the presence or addition of one or more other features, elements, components and / or their combinations. The term "based on" should be understood as "at least partially based on". The terms "one embodiment" and "embodiment" will be interpreted as "at least one embodiment". The term "another embodiment" should be understood as "at least one other embodiment". Other definitions may be included explicitly and implicitly below.

[0086] With all the global technical activity in industry and academia on various candidate technologies, next-generation mobile communications are gaining momentum. The vast and diverse requirements of next-generation networks, such as 5G, mean that frequency bands at many different carrier frequencies may be required. In 3GPP Release 15, bandwidth part (BWP) was introduced into 5G systems to achieve UE energy efficiency.

[0087] Compared to previous generations of 3GPP standards, 3GPP NR can support a very large operating bandwidth. Since UEs in a cell may have different bandwidth capabilities, using a wide bandwidth may result in more power consumption and may increase the complexity of RF and baseband implementation. Therefore, NR introduces the concept of BWP and allows UEs with different bandwidth capabilities to operate in a cell with a smaller instantaneous bandwidth relative to the configured cell bandwidth, making NR a more energy-efficient solution despite its support for wideband channels.

[0088] Figures 1A-1E is a diagram illustrating an exemplary BWP use case according to some embodiments of the present disclosure. Figures 1A-1E As shown, different BWPs can be configured for specific carrier bandwidths. Figure 1A The configuration shown in may support reduced UE / network bandwidth. Figure 1B The configuration shown in may support bandwidth adaptation, for example for power consumption. Figure 1C The configuration shown in can support semi-dynamic configuration switching (e.g., Figure 1C Switching between BWP1 and BWP2 in , where BWP1 and BWP2 can be configured with the same bandwidth but different parameter sets). Figure 1D The configuration shown in can support mixed parameter sets (e.g. Figure 1D Parameter set 1 for BWP1 and parameter set 2 for BWP2). Figure 1E The configuration shown in can support non-contiguous spectrum. It can be understood that Figures 1A-1EThe BWP configurations shown in FIG. 5 are merely examples, and alternative frequency allocations and BWP configurations (eg, more or fewer BWPs and / or available frequency bands) may be applied according to some embodiments of the present disclosure.

[0089] According to an exemplary embodiment, up to four uplink / downlink (UL / DL) BWPs can be configured separately and independently for a UE for paired spectrum per serving cell. However, only one BWP is active at a given time, and it may not be desirable for the UE to receive / transmit DL / UL physical signals / channels outside of the active BWP. For paired spectrum, the DL BWP and UL BWP can be jointly configured as a pair, and up to four pairs can be configured.

[0090] According to an exemplary embodiment, the UE may be configured to switch between different BWPs. As described in 3GPP TS 38.213 V15.6.0, TS 38.214 V15.6.0, and TS 38.331 V15.6.0 (the entire contents of these technical specifications are incorporated herein by reference), 3GPP may support the following types of BWP switching:

[0091] -BWP switching based on random access (RA);

[0092] -BWP switching based on downlink control information (DCI);

[0093] - Timer-based BWP switching; and

[0094] - Radio Resource Control (RRC) based BWP switching.

[0095] According to exemplary embodiments, some parameters or fields in UL / DL signaling or information elements may be used to indicate specific channel parameter settings and / or communication capabilities of the UE. Figures 2A-2B is a diagram illustrating exemplary information elements according to some embodiments of the present disclosure. Figure 2AAs shown, the parameter bwp-DiffNumerology in the UE capability information element can be used to indicate whether the UE can support BWP adaptation of up to four BWPs with different parameter sets, for example, through DCI and timers. For UEs that can implement this feature, the bandwidth of the DL BWP configured by the UE-specific RRC may include the bandwidth of the synchronization signal and physical broadcast channel blocks (also referred to as SS / PBCH blocks or SSBs) for the primary cell (PCell) and primary secondary cell (PSCell) (if configured) and control resource set #0 (also referred to as CORESET #0) (if CORESET #0 exists). For the secondary cell (SCell), if SSBs exist on the SCell, the bandwidth of the DL BWP configured by the UE-specific RRC may include SSBs.

[0096] According to an exemplary embodiment, the parameter subcarrierSpacing (e.g. Figure 2B (as shown) can be used to indicate the SCS to be used in the corresponding BWP for all channels and reference signals, unless explicitly configured elsewhere. As described in 3GPP TS 38.211 V16.0.0 (the entire contents of this technical specification are hereby incorporated by reference into this disclosure), each BWP can be configured with a specific SCS. For example, multiple transmission parameter sets can be supported, as shown in Table 1, where Δf represents the SCS in kHz, and the SCS index μ and cyclic prefix for the BWP can be obtained from the higher-layer parameters subcarrierSpacing and cyclicPrefix, respectively.

[0097] Table 1

[0098] μ <![CDATA[Δf=2 μ ·15[kHz]]]> cyclic prefix 0 15 normal 1 30 normal 2 60 Normal, Extended 3 120 normal 4 240 normal

[0099] As listed in Table 1, an SCS value of 15 kHz corresponds to μ=0, an SCS value of 30 kHz corresponds to μ=1, and so on. According to an exemplary embodiment, only SCS values ​​of 15 kHz, 30 kHz, and 60 kHz may be applied to frequency range 1 (FR1), and SCS values ​​of 120 kHz and 240 kHz may be applied to frequency range 2 (FR2).

[0100] Supporting multiple SCS options in NR can achieve many advantages. When using smaller SCSs, the symbol length can increase inversely. For the same ratio of CP duration to OFDM symbol duration (i.e., CP overhead ratio), the CP of the OFDM symbol can be longer for longer symbol lengths. Therefore, using smaller SCSs can make the system more resilient to multipath delay spread at the same CP overhead ratio.

[0101] On the other hand, a larger SCS can shorten the symbol duration, which is not only beneficial for fast transmission turnaround time, but also for reducing sensitivity to phase noise. Phase noise can be a random process and directly affects the up / down conversion between baseband and RF signals due to the time instability of the local oscillator. Phase noise in the frequency domain can cause signal jitter in the time domain. In general, phase noise can increase with the carrier frequency and speed of the UE. For example, the Doppler shift f can be calculated as follows d :

[0102]

[0103] Where V is the speed of the UE, C is the speed of light, and f0 is the carrier frequency of the UE.

[0104] In the case of a slow phase change rate, phase noise can be modeled as a constant relative to the OFDM symbol duration and can be compensated by estimation. The larger the SCS, the easier it is to compensate for phase noise.

[0105] In order to improve the resource utilization and system performance of the communication network, various exemplary embodiments of the present disclosure propose a solution for adaptive parameter setting. The proposed solution is applicable to 5G / NR systems or any other communication system that can support BWP switching with different SCSs. According to some exemplary embodiments, a network node (e.g., gNB) may instruct a terminal device (e.g., UE) to implement SCS switching according to one or more physical channel parameters and / or service requirements, which may be assisted by BWP configuration. In an embodiment with a smaller SCS, the system may be more tolerant to the effects of multipath delay spread. In another embodiment with a larger SCS, the system may be more tolerant to the effects of phase noise and Doppler shift.

[0106] Figure 3A FIG. 1 is a diagram illustrating an exemplary adaptive parameter setting process according to an embodiment of the present disclosure. Figure 3A The exemplary process shown in FIG is to implement adaptive parameter setting (such as SCS switching, etc.) in the UL and / or DL ​​of the UE. For simplicity, Figure 3A The adaptive parameter setting process implemented by the gNB for the UE is only schematically described. It can be understood that Figure 3A The process steps, signaling messages, and transmission configurations shown in are merely examples, and the adaptive parameter setting process according to an embodiment of the present disclosure may involve more or fewer alternative process steps, signaling messages, and transmission configurations.

[0107] like Figure 3AAs shown, the gNB can perform RRC configuration 311 for the UE to configure multiple BWPs with different SCSs for the UE. In an exemplary embodiment, the multi-subcarrier spacing for the BWP can be configured only for UEs that report the bwp-DiffNumerology capability to the gNB. In another exemplary embodiment, in addition to UE capabilities, the BWP configuration can be triggered by various measurements, such as UL measurements and / or DL ​​measurements. Various parameters can be configured to the UE through the BWP configuration, including, but not limited to: the cyclic prefix, location and bandwidth, SCS, and the channel / signal configured for the BWP (e.g., physical downlink control channel / physical uplink control channel / channel state information reference signal / sounding reference signal (PDCCH / PUCCH / CSI-RS / SRS)). It will be appreciated that there can be many strategies for setting these parameters.

[0108] Figure 3B is a diagram illustrating an exemplary BWP configuration according to an embodiment of the present disclosure. In an embodiment for FR1, the SCSs of 30 kHz, 15 kHz, and 60 kHz may be configured as three BWPs (e.g., BWP#1, BWP#2, and BWP#3) with different parameter sets, respectively. Figure 3B As shown. Taking BWP#3 with parameter set μ=2 as an example, a resource block (RB) may include 12 subcarriers, with 14 symbols per time slot. In another embodiment, for a system that supports up to four BWPs configured for a UE, in addition to BWP#1, BWP#2, and BWP#3 for FR1, the gNB may also configure BWP#4 with an extended cyclicPrefix and a 60 kHz SCS for the UE. In this case, the system can be more tolerant to the effects of multipath delay spread.

[0109] It can be recognized that, combined with Figure 3B The parameters, variables and settings related to the BWP / SCS configuration described are only examples. Other suitable parameter settings, associated configurations and their specific values ​​may also be suitable for implementing the proposed method.

[0110] Return Reference Figure 3A, the gNB may calculate one or more physical channel parameters through DL measurements and / or UL measurements. According to an exemplary embodiment, the gNB may obtain 312 DL measurements through reports from the UE, such as CSI reports indicating rank index / precoding matrix indicator / channel quality indicator (RI / PMI / CQI), RI / CQI, CSI-RS resource indicator / reference signal received power (CRI / RSRP), etc. According to another exemplary embodiment, the gNB may perform some UL measurements, such as physical uplink shared channel (PUSCH) demodulation reference signal (DMRS), SRS measurements, etc. It is understood that in addition to the DL / UL measurements of the UE, the gNB may also use measurement information about other UEs to estimate one or more physical channel parameters of the UE. According to some exemplary embodiments, the one or more physical channel parameters mentioned here may include various parameters related to the UE's speed and multipath delay spread.

[0111] According to an exemplary embodiment, the speed of the UE may be indicated by a change in the PMI reported by the UE. In the case where the UE continues to report the PMI to the gNB, the PMI change may be calculated by the distance between two consecutive reported PMIs, and the speed of the UE may be determined, for example, according to formula (2a) or (2b) as shown below:

[0112] PMID(l1,l2)≥Th h (2a)

[0113] PMID(m1,m2)≥Th v (2b)

[0114] in

[0115] -PMID is a support function for computing the PMI change in a given dimension;

[0116] -l1,l2 are the PMIs in the horizontal direction between two consecutively reported PMIs;

[0117] -m1,m2 are the PMIs in the vertical direction between two consecutively reported PMIs;

[0118] -Th h is the PMI change threshold in the horizontal direction; and

[0119] -Th v is the PMI change threshold in the vertical direction.

[0120] According to an exemplary embodiment, if the value of PMID is greater than a threshold in the horizontal direction or in the vertical direction, it is determined that the speed of the UE is large. It can be understood that the PMI reported by the UE can be wideband or subband, and different thresholds can be set to distinguish channel changes over time into different levels.

[0121] According to an exemplary embodiment, the RI may be used to indicate the multipath delay spread of a UE. For example, if the RI of a UE is greater than a certain value, it means that several layers with orthogonal paths (which have good channel quality) may be transmitted to the UE. In this case, the UE may be more likely to have multipath delay spread.

[0122] According to an exemplary embodiment, the UE speed may be indicated by the CRI change of consecutive reports (where CSI-RS is configured for beam management). As described in the embodiment regarding PMI change, if the CRI of consecutive reports changes rapidly, it means that the UE speed is high.

[0123] According to an exemplary embodiment, various signals (eg, PUSCH DMRS, SRS, etc.) may be used to estimate Doppler shift and / or multipath delay spread of a UE. Alternatively or additionally, the multipath delay spread of a UE may also be calculated based on channel estimation using DMRS.

[0124] According to exemplary embodiments, for burst transmission communication systems, a receiver may need to quickly and accurately estimate and compensate for Doppler shift in order to accurately receive data. According to exemplary embodiments, a receiver (e.g., at a gNB) may estimate Doppler shift using pilot symbols / signals (e.g., DRMS, SRS, etc.). The UE's velocity may then be calculated based on the estimated Doppler shift.

[0125] According to some exemplary embodiments, the gNB may determine whether to trigger 313 BWP / SCS switching based on one or more physical channel parameters of the UE (e.g., based on RRC / DCI, etc.), such as Figure 3A In an embodiment, the gNB may follow the criteria shown in Table 2 to decide on BWP / SCS switching.

[0126] Table 2

[0127]

[0128] Based on the criteria in Table 2, if the UE speed is low and multipath is low, the gNB may decide to use the old parameter settings without triggering BWP configuration. If the UE speed is high and multipath is low, the gNB may decide to trigger BWP configuration to switch to a BWP with a larger SCS. If the UE speed is low and multipath is high, the gNB may decide to trigger BWP configuration to switch to a BWP with a smaller SCS. If the UE speed is high and multipath is high, the gNB may decide to trigger BWP configuration to switch to a BWP with a larger SCS and an extended CP.

[0129] In another embodiment, the gNB may calculate a speed factor and a multipath factor with corresponding weights for the UE. Various weighting schemes or functions may be used to represent the weighted speed factor and weighted multipath factor of the UE. For example, if the UE's channel is identified as a high-speed channel, the UE's weighted speed factor may be represented by W_v = 6; if the UE's channel is identified as a medium-speed channel, the UE's weighted speed factor may be represented by W_v = 5; and if the UE's channel is identified as a low-speed channel, the UE's weighted speed factor may be represented by W_v = 4. Similarly, if the UE's channel is identified as a channel with many paths, the UE's weighted multipath factor may be represented by W_p = 3; if the UE's channel is identified as a channel with a medium number of paths (also referred to as "medium paths"), the UE's weighted multipath factor may be represented by W_p = 2; and if the UE's channel is identified as a channel with a small number of paths, the UE's weighted multipath factor may be represented by W_p = 1. It will be appreciated that the values ​​of the weighted speed factor such as 4, 5 and 6 and the values ​​of the weighted multipath factor such as 1, 2 and 3 are merely examples. It is possible that the weighted speed factor and the weighted multipath factor may be represented by other values.

[0130] According to an exemplary embodiment, the gNB may compare the weighted speed factor and the weighted multipath factor of the UE to determine the main influencing factor W that triggers the BWP / SCS switching of the UE.

[0131] Figure 4A is a diagram showing an exemplary calculation of the main influencing factors according to an embodiment of the present disclosure. Figure 4A In the illustrated embodiment, the main impact factor W of the UE can be calculated as follows based on the difference between the two weighting factors.

[0132] W=W_v-W_p (3)

[0133] - If W = Th trigger(e.g., 3 or other appropriate values), which means that the speed factor and the multipath factor have similar influence weights on the UE, the gNB may decide to keep the old parameter settings without triggering the BWP configuration. In an embodiment, for example, in the case where both the speed factor and the multipath factor of the UE have large values ​​(as described in Table 2), if W=Th trigger , the gNB may decide to trigger the BWP configuration to switch to a larger SCS with an extended CP.

[0134] -If W>Th trigger , which means that the speed factor has a greater impact on the UE, then the gNB can decide to trigger the BWP configuration in order to switch to a larger SCS.

[0135] - If W <Th trigger , which means that the multipath factor has a greater impact on the UE, then the gNB can decide to trigger the BWP configuration in order to switch to a smaller SCS.

[0136] Note that the parameter names (e.g., W, W_v, and W_p) and thresholds (e.g., Th trigger ) or a range of values ​​(e.g., >Th trigger or <Th trigger ) are exemplary, and other names, thresholds, and ranges may also be used to indicate the same or similar information. Figure 4A The functions, variables and weights related to the determination of BWP / SCS switching described are only examples, and other suitable function settings, related variables, weights and their values ​​may also be applicable to implement the proposed method.

[0137] According to some exemplary embodiments, the gNB may determine whether to trigger BWP / SCS switching based on the UE's service type. Different service types may be associated with different SCSs. For example, a larger SCS with a short slot duration may be beneficial for services such as Ultra-Reliable Low Latency Communication (URLLC) (which may be based on mini-slots for low latency as described in 3GPP Releases 15 / 16). In an embodiment, the gNB may examine the UE's service type, such as URLLC or enhanced Mobile Broadband (eMBB). If the UE's communication requires low latency, a larger SCS may be configured for the UE, for example, by triggering BWP configuration for the UE. Otherwise, for example, for eMBB, a smaller SCS may be the UE's preference. In this manner, the UE can switch between different SCSs based on service type requirements through BWP configuration. It will be appreciated that, depending on different application scenarios and / or service requirements, the UE's BWP / SCS switching may be based on any combination of the UE's service type, speed factor, and multipath factor. For example, in a single-service scenario, BWP / SCS switching may be triggered based on the UE's speed factor and / or multipath factor, regardless of the UE's service type. In a multi-service scenario, BWP / SCS switching can be triggered based on the service type of the UE, with less or no consideration of the UE's speed factor and / or multipath factor, so as to reduce system overhead.

[0138] According to some exemplary embodiments, the gNB may consider various BWP / SCS configurations and divide the UEs served by the gNB into several groups. According to an embodiment, UE Group 0 may include a first group of UEs configured with a 15 kHz SCS, UE Group 1 may include a second group of UEs configured with a 30 kHz SCS, UE Group 2 may include a third group of UEs configured with a 60 kHz SCS, and so on. Generally, UEs configured with different SCSs may interfere with each other if scheduled as neighbors. A guard band may be set between two frequency bands with different SCSs to prevent mutual interference. In an exemplary embodiment, the gNB may schedule UEs in the same group within the same frequency band to conserve guard bands. In this case, setting guard bands within the same frequency band may not be necessary.

[0139] Figure 4B FIG is a diagram showing an exemplary frequency configuration according to an embodiment of the present disclosure. Figure 4BAs shown, guard band 1 can be used to separate the two frequency bands associated with UE Group 0 and UE Group 1, respectively, and guard band 2 can be used to separate the two frequency bands associated with UE Group 1 and UE Group 2, respectively. For example, if the UEs in Group 1 are configured with the same SCS, when the UEs are scheduled by the gNB in ​​the frequency band associated with Group 1, there can be no interference between the UEs, even if no guard band is configured in that frequency band. Similarly, guard bands may not be required in the frequency bands associated with Group 0 and Group 2. It will be appreciated that the frequency configuration and association between frequency bands and UE groups are merely examples, and other suitable frequency configurations, associations between frequency bands and UE groups, and grouping schemes may also be applicable to the various embodiments of the present disclosure.

[0140] According to some exemplary embodiments, the gNB may trigger BWP configuration to activate / switch BWP / SCS for DL ​​and / or UL transmission according to different schemes, for example, using DCI / RRC-based BWP / SCS switching, etc. In the embodiment of DCI-based BWP / SCS switching, the gNB may activate / switch BWP by setting a BWP indicator in the DCI for the UE. For example, the number of UL BWPs n configured by the higher layer may be set. BWPRRC (excluding the initial UL BWP) to determine the BWP indicator with one or more bits. The bit width of the parameter or field "BWP indicator" may be determined as bits,

[0141] in:

[0142] -If n BWPRRC ≤3, then n BWP =n BWPRRC +1, in this case, the BWP indicator is equivalent to the ascending order of the higher-layer parameter BWP-ID;

[0143] - Otherwise n BWP =n BWPRRC , in this case, the BWP indicator is defined in Table 3.

[0144] Table 3

[0145]

[0146] As shown in Table 3, the gNB may set the 2-bit BWP indicator to different values ​​(e.g., 00, 01, 10, and 11) to indicate BWPs with different BWP-IDs. In an embodiment, BWP-IDs with values ​​of "1," "2," "3," and "4" may be used to indicate BWPs with different BWP-IDs. Figure 3B The BWP#1, BWP#2, BWP#3 and BWP#4 or other possible BWPs configured with corresponding SCSs.

[0147] It should be noted that some embodiments of the present disclosure are primarily described with respect to the 5G or NR specifications, which are used as non-limiting examples of specific exemplary network configurations and system deployments. As such, the description of the exemplary embodiments presented herein specifically refers to terminology directly related thereto. Such terminology is used only in the context of the non-limiting examples and embodiments presented and naturally does not limit the present disclosure in any way. Rather, any other system configuration or radio technology may be equally used, provided that the exemplary embodiments described herein are applicable.

[0148] Figure 5A is a flow chart illustrating a method 510 according to some embodiments of the present disclosure. Figure 5A The illustrated method 510 may be implemented by a network node or a device communicatively coupled to the network node. According to exemplary embodiments, the network node may include a base station, an AP, a transmission point, or any other suitable entity capable of providing services to one or more terminal devices (e.g., UEs) according to a specific communication protocol.

[0149] according to Figure 5A In the illustrated exemplary method 510, based on one or more parameters of a terminal device, a network node may determine whether to trigger BWP configuration for SCS switching for the terminal device, as shown in block 512. According to some exemplary embodiments, the BWP configuration may indicate that the terminal device switches from a first BWP to a second BWP, and the first BWP and the second BWP may be configured with different SCSs.

[0150] It is understood that the network node may (through, for example, RRC signaling) transmit multiple BWP options (for example, Figure 3B The BWPs described above may be pre-configured for the terminal device. Alternatively or additionally, the network node may dynamically adjust the BWP options available to the terminal device as needed. According to an exemplary embodiment, the network node may send information about multiple BWPs with different SCSs available to the terminal device to the terminal device. In an embodiment, the BWP configuration may be used to activate one of the multiple BWPs for the terminal device.

[0151] According to some exemplary embodiments, the one or more parameters of the terminal device may include a speed factor, a multipath factor, a service type, or any combination thereof. For example, the speed factor may be used to indicate the speed of the terminal device, the multipath factor may be used to indicate the multipath delay spread of the terminal device, and the service type may be used to indicate one or more service requirements of the terminal device.

[0152] According to some exemplary embodiments, the one or more parameters of the terminal device may be related to UL measurement information of the terminal device, DL measurement information of the terminal device, service type requirements of the terminal device and / or any other possible information that may reflect channel conditions and / or service quality.

[0153] According to some exemplary embodiments, determining whether to trigger BWP configuration for SCS switching for the terminal device based on one or more parameters of the terminal device may include: determining, in response to the one or more parameters satisfying a first criterion, to trigger the BWP configuration for switching from a first SCS to a second SCS for the terminal device. In an embodiment, the second SCS may be larger than the first SCS.

[0154] According to an exemplary embodiment, the first criterion may indicate that the speed factor of the terminal device is greater than a first threshold and the multipath factor of the terminal device is less than a second threshold (for example, as shown in the third row of Table 2, which means high speed and few multipaths). According to another exemplary embodiment, the first criterion may indicate that the difference between the weight of the speed factor and the weight of the multipath factor of the terminal device is within a first range (for example, greater than the difference between the weight of the speed factor and the weight of the multipath factor of the terminal device). Figure 4A The Th trigger According to another exemplary embodiment, the first criterion may indicate that the service type of the terminal device is associated with a first delay requirement (eg, a delay-sensitive service that may require low delay, such as URLLC).

[0155] According to some exemplary embodiments, determining whether to trigger BWP configuration for SCS switching for the terminal device based on one or more parameters of the terminal device may include: in response to the one or more parameters satisfying a second criterion, determining to trigger BWP configuration for switching from a third SCS to a fourth SCS for the terminal device. In an embodiment, the fourth SCS may be smaller than the third SCS.

[0156] According to an exemplary embodiment, the second criterion may indicate that the speed factor of the terminal device is less than a third threshold and the multipath factor of the terminal device is greater than a fourth threshold (for example, as shown in the fourth row of Table 2, which means low speed and high multipath). According to another exemplary embodiment, the second criterion may indicate that the difference between the weight of the speed factor and the weight of the multipath factor of the terminal device is within a second range (for example, less than the difference between the weight of the speed factor and the weight of the multipath factor of the terminal device). Figure 4A The Th trigger According to another exemplary embodiment, the second criterion may indicate that the service type of the terminal device is associated with a second delay requirement (eg, non-delay-sensitive service, etc.).

[0157] According to some exemplary embodiments, determining whether to trigger BWP configuration for SCS switching for the terminal device based on one or more parameters of the terminal device may include: in response to the one or more parameters satisfying a third criterion, determining to trigger BWP configuration for switching from a fifth SCS to a sixth SCS for the terminal device. In an embodiment, the sixth SCS may be associated with an extended CP and be larger than the fifth SCS.

[0158] According to an exemplary embodiment, the third criterion may indicate that the speed factor of the terminal device is greater than the fifth threshold and the multipath factor of the terminal device is greater than the sixth threshold (for example, as shown in the fifth row of Table 2, meaning high speed and high multipath).

[0159] According to some exemplary embodiments, determining whether to trigger BWP configuration for SCS switching for the terminal device based on one or more parameters of the terminal device may include: in response to the one or more parameters satisfying a fourth criterion, determining not to trigger BWP configuration for SCS switching for the terminal device.

[0160] According to an exemplary embodiment, the fourth criterion may indicate that the speed factor of the terminal device is less than a seventh threshold value and the multipath factor of the terminal device is less than an eighth threshold value (for example, as shown in the second row of Table 2, which means low speed and few multipaths). According to another exemplary embodiment, the fourth criterion may indicate that the difference between the weight of the speed factor and the weight of the multipath factor of the terminal device is within a third range or equal to a specific value (for example, as shown in the second row of Table 2). Figure 4A The Th trigger ).

[0161] according to Figure 5A In the exemplary method 510 shown, in response to determining that BWP configuration is to be triggered for the terminal device, the network node may send an indicator to the terminal device to trigger the BWP configuration for the SCS switching, as shown in block 514. According to some exemplary embodiments, the network node may send the indicator to the terminal device in one or more of RRC signaling, DCI, and MAC CE. According to exemplary embodiments, the indicator sent to the terminal device may indicate a BWP configured with a specific SCS to which the terminal device is to switch. In this manner, the network node may dynamically activate / switch SCSs to adapt to various communication environments of the terminal device.

[0162] According to some exemplary embodiments, based on the BWP configuration for the terminal device, the network node may determine the device group to which the terminal device belongs. In an embodiment, each member of the device group (e.g., Figure 4BThe groups 0, 1 and 2) may be configured with the same SCS and may be scheduled in a frequency band without a guard band.

[0163] Figure 5B is a flow chart illustrating a method 520 according to some embodiments of the present disclosure. Figure 5B The illustrated method 520 may be implemented by a terminal device or an apparatus communicatively coupled to the terminal device. According to an exemplary embodiment, a terminal device such as a UE may be capable of communicating with a network node (eg, a base station, an AP, a transmission point, etc.) according to a specific communication protocol.

[0164] according to Figure 5B In the exemplary method 520 shown, the terminal device may receive information from a network node (e.g., Figure 5A The network node) receives an indicator to trigger BWP configuration for SCS handover for the terminal device, as shown in block 522. In an embodiment, the BWP configuration may be based at least in part on one or more parameters of the terminal device (e.g., a speed factor, a multipath factor, and / or a traffic type, etc.). In response to receiving the indicator from the network node, the terminal device may trigger the BWP configuration for the SCS handover, as shown in block 524.

[0165] I understand. Figure 5B The steps, operations, and related configurations of the method 520 shown in FIG. 5 may correspond to Figure 5A The steps, operations and related configurations of the method 510 are shown in FIG. Figure 5B The BWP configuration for SCS switching may correspond to the following: Figure 5A Therefore, the BWP configuration for SCS switching described in relation to method 510 and method 520 may have the same or similar content and feature elements. Similarly, the BWP configuration for SCS switching described in relation to method 510 and method 520 may have the same or similar content and feature elements. Figure 5B The one or more parameters of the terminal device may correspond to Figure 5A One or more parameters of the terminal device.

[0166] According to some example embodiments, the terminal device may receive information from the network node about a plurality of BWPs having different SCSs available for the terminal device. Figure 5A The BWP configuration triggered for the terminal device may be used to activate one of the plurality of BWPs for the terminal device.

[0167] According to some exemplary embodiments, the terminal device may receive an indicator for triggering the BWP configuration from the network node in RRC signaling, DCI and / or MAC CE, etc. Based on the indicator received from the network node, the terminal device may determine the BWP configured with the specific SCS to which the terminal device is to switch.

[0168] According to some exemplary embodiments, triggering the BWP configuration for the SCS switching may include: implementing a BWP switching to switch from a first SCS to a second SCS that is larger than the first SCS. In this case, the one or more parameters may satisfy a first criterion (e.g., regarding Figure 5A the first criterion mentioned above).

[0169] According to some exemplary embodiments, triggering the BWP configuration for the SCS switching may include: implementing the BWP switching to switch from the third SCS to a fourth SCS that is smaller than the third SCS. In this case, the one or more parameters may satisfy a second criterion (e.g., regarding Figure 5A the second criterion mentioned above).

[0170] According to some exemplary embodiments, triggering the BWP configuration for the SCS switching may include: implementing a BWP switching to switch from the fifth SCS to a sixth SCS associated with an extended CP and larger than the fifth SCS. In this case, the one or more parameters may satisfy a third criterion (e.g., regarding Figure 5A the third criterion mentioned above).

[0171] According to some exemplary embodiments, the terminal device may belong to a device group, e.g. Figure 4B In addition to the terminal device, the device group may also include one or more other terminal devices served by the network node. In an embodiment, each member of the device group may be configured with the same SCS and can be scheduled by the network node in a frequency band without a guard band.

[0172] According to various exemplary embodiments of the present disclosure, SCS switching can be enabled for terminal devices based on different communication environments and requirements. According to some exemplary embodiments, a gNB can configure multiple BWPs with different SCSs to a UE in a cell served by the gNB and calculate one or more physical channel parameters (e.g., speed factor, multipath factor, etc.) of the terminal device through measurements. Based at least in part on the one or more physical channel parameters and / or traffic type of the terminal device, the gNB can trigger BWP / SCS switching for the UE to benefit high-speed and / or multipath UEs by configuring a better SCS. According to embodiments, a UE can be configured with multiple BWPs supporting different SCSs. In line-of-sight (LOS) scenarios, BWP / SCS switching can be implemented for the UE based on its speed level, for example, a larger SCS for higher speeds and a smaller SCS for lower speeds. In environments with multiple paths, higher-speed UEs can be switched to a BWP configured with a larger SCS and an extended CP, while lower-speed UEs can be switched to a BWP configured with a smaller SCS. Alternatively or additionally, BWP / SCS switching can also be implemented based on the UE's traffic type requirements. In an embodiment, UEs configured with the same SCS may be divided into device groups and scheduled in a specific frequency band, for example, without a guard band. The application of various exemplary embodiments may advantageously improve network performance and resource efficiency, and enhance the flexibility of system configuration and implementation.

[0173] Figures 5A to 5B The various blocks shown in the figures may be viewed as method steps, and / or operations resulting from the operation of computer program code, and / or multiple coupled logic circuit elements configured to perform related functions. The schematic flow charts described above are generally described as logic flow charts. Thus, the order and labeled steps depicted indicate specific embodiments of the proposed methods. Other steps and methods are contemplated that are functionally, logically, or effectively equivalent to one or more steps or portions thereof of the illustrated methods. Additionally, the order in which a particular method occurs may or may not strictly adhere to the order of the corresponding steps shown.

[0174] Figure 6A 6 is a block diagram illustrating an apparatus 610 according to various embodiments of the present disclosure. Figure 6A As shown, the apparatus 610 may include one or more processors (e.g., processor 611) and one or more memories (e.g., memory 612 storing computer program code 613). The memory 612 may be a non-transitory machine / processor / computer readable storage medium. According to some exemplary embodiments, the apparatus 610 may be implemented as an integrated circuit chip or module, which may be inserted into or installed in a computer system such as a computer system. Figure 5A The network node described, or can be inserted into or installed in Figure 5B In this case, the device 610 can be implemented as described in Figure 5A The network node described, or as Figure 5B The terminal device described.

[0175] In some implementations, the one or more memories 612 and the computer program code 613 may be configured to, together with the one or more processors 611, cause the apparatus 610 to at least implement the following: Figure 5A In other implementations, the one or more memories 612 and the computer program code 613 may be configured to, together with the one or more processors 611, cause the apparatus 610 to at least perform the steps described in conjunction with Figure 5B Alternatively or additionally, the one or more memories 612 and the computer program code 613 may be configured to, together with the one or more processors 611, enable the apparatus 610 to at least perform more or fewer operations to implement the method proposed according to the exemplary embodiments of the present disclosure.

[0176] Figure 6B 6 is a block diagram illustrating an apparatus 620 according to some embodiments of the present disclosure. Figure 6B As shown, apparatus 620 may include a determining unit 621 and a sending unit 622. In an exemplary embodiment, apparatus 620 may be implemented in a network node such as a base station. Determining unit 621 may be operable to perform the operations in block 512, and sending unit 622 may be operable to perform the operations in block 514. Optionally, determining unit 621 and / or sending unit 622 may be operable to perform more or fewer operations to implement the method proposed in accordance with the exemplary embodiments of the present disclosure.

[0177] Figure 6C 6 is a block diagram illustrating an apparatus 630 according to some embodiments of the present disclosure. Figure 6C As shown, apparatus 630 may include a receiving unit 631 and a triggering unit 632. In an exemplary embodiment, apparatus 630 may be implemented in a terminal device such as a UE. Receiving unit 631 may be operable to perform the operations in block 522, and triggering unit 632 may be operable to perform the operations in block 524. Optionally, receiving unit 631 and / or triggering unit 632 may be operable to perform more or fewer operations to implement the method proposed in accordance with the exemplary embodiments of the present disclosure.

[0178] Figure 7 is a block diagram illustrating a telecommunications network connected to a host computer via an intermediary network according to some embodiments of the present disclosure.

[0179] refer to Figure 7According to an embodiment, a communications system includes a telecommunications network 710 (such as a 3GPP-type cellular network), which includes an access network 711 (such as a radio access network) and a core network 714. Access network 711 includes multiple base stations 712a, 712b, 712c, such as NBs, eNBs, gNBs, or other types of wireless access points, each of which defines a corresponding coverage area 713a, 713b, 713c. Each base station 712a, 712b, 712c can be connected to core network 714 via a wired or wireless connection 715. A first UE 791 located in coverage area 713c is configured to wirelessly connect to or be paged by the corresponding base station 712c. A second UE 792 in coverage area 713a can be wirelessly connected to the corresponding base station 712a. Although multiple UEs 791 and 792 are shown in this example, the disclosed embodiments are equally applicable to scenarios where only one UE is in the coverage area or is connected to the corresponding base station 712.

[0180] The telecommunications network 710 itself is connected to a host computer 730, which can be embodied in the hardware and / or software of a standalone server, a cloud-enabled server, a distributed server, or as processing resources in a server farm. The host computer 730 can be under the ownership or control of a service provider, or can be operated by or on behalf of a service provider. Connections 721 and 722 between the telecommunications network 710 and the host computer 730 can extend directly from the core network 714 to the host computer 730, or can pass through an optional intermediate network 720. The intermediate network 720 can be one of a public network, a private network, or a managed network, or a combination thereof; the intermediate network 720, if present, can be a backbone network or the Internet; in particular, the intermediate network 720 can include two or more subnetworks (not shown).

[0181] Figure 7The communication system generally implements a connection between connected UEs 791, 792 and a host computer 730. This connection can be described as an over-the-top (OTT) connection 750. The host computer 730 and the connected UEs 791, 792 are configured to communicate data and / or signaling via the OTT connection 750, using the access network 711, the core network 714, any intermediate networks 720, and possibly other infrastructure (not shown) as intermediaries. The OTT connection 750 can be transparent in the sense that the participating communication devices through which the OTT connection 750 passes are unaware of the routing of uplink and downlink communications. For example, the base station 712 may not be informed or need not be informed of the past routing of incoming downlink communications originating from the host computer 730, including data to be forwarded (e.g., handed off) to the connected UE 791. Similarly, the base station 712 does not need to be aware of the future routing of outgoing uplink communications originating from the UE 791 and destined for the host computer 730.

[0182] Figure 8 is a block diagram illustrating a host computer communicating with a UE over a partially wireless connection via a base station according to some embodiments of the present disclosure.

[0183] Now refer to Figure 8 An example implementation of the UE, base station, and host computer discussed in the preceding paragraphs according to an embodiment is described. In communication system 800, host computer 810 includes hardware 815, which includes a communication interface 816 configured to establish and maintain wired or wireless connections to interfaces with various communication devices of communication system 800. Host computer 810 also includes processing circuitry 818, which may have storage and / or processing capabilities. In particular, processing circuitry 818 may include one or more programmable processors, application-specific integrated circuits, field-programmable gate arrays, or a combination of these components (not shown) suitable for executing instructions. Host computer 810 also includes software 811, which is stored in or accessible by host computer 810 and executable by processing circuitry 818. Software 811 includes a host application 812. Host application 812 is operable to provide services to a remote user (e.g., UE 830 connected via an OTT connection 850 terminating between UE 830 and host computer 810). In providing services to remote users, the host application 812 may provide user data transmitted using the OTT connection 850 .

[0184] The communication system 800 also includes a base station 820 provided in the telecommunications system, which includes hardware 825 that enables it to communicate with the host computer 810 and the UE 830. The hardware 825 may include a communication interface 826 for establishing and maintaining wired or wireless connections with different communication devices of the communication system 800, and for establishing and maintaining connections with the base station 820 in the coverage area ( Figure 8 The communication interface 826 may be configured to facilitate a connection 860 to the host computer 810. The connection 860 may be direct, or it may pass through a core network (e.g., a core network of a telecommunications system) of the telecommunications system. Figure 8 (not shown) and / or traverse one or more intermediate networks external to the telecommunications system. In the illustrated embodiment, the hardware 825 of base station 820 also includes processing circuitry 828, which may include one or more programmable processors, application-specific integrated circuits, field-programmable gate arrays, or a combination of these components (not shown) suitable for executing instructions. Base station 820 also has software 821 stored internally or accessible via an external connection.

[0185] Communication system 800 also includes the aforementioned UE 830. Its hardware 835 may include a radio interface 837 configured to establish and maintain a wireless connection 870 with a base station serving the coverage area currently located by UE 830. UE 830's hardware 835 also includes processing circuitry 838, which may include one or more programmable processors, application-specific integrated circuits, field-programmable gate arrays, or a combination of these components (not shown) adapted to execute instructions. UE 830 also includes software 831, which is stored in or accessible to UE 830 and executable by processing circuitry 838. Software 831 includes a client application 832. Client application 832 is operable to provide services to human or non-human users via UE 830, with support from host computer 810. Within host computer 810, an executing host application 812 may communicate with the executing client application 832 via an OTT connection 850 terminated between UE 830 and host computer 810. When providing services to users, client application 832 may receive request data from host application 812 and provide user data in response to the request data. OTT connection 850 may transmit both the request data and the user data. Client application 832 may interact with the user to generate the user data it provides.

[0186] It should be noted that Figure 8 The host computer 810, base station 820 and UE 830 shown in FIG can be respectively Figure 7The host computer 730, one of the base stations 712a, 712b, 712c, and one of the UEs 791, 792 are similar or identical. That is, the internal workings of these entities may be similar to Figure 8 As shown, and independently, the surrounding network topology can be Figure 7 network topology.

[0187] exist Figure 8 In FIG, OTT connection 850 has been abstractly drawn to illustrate communication between host computer 810 and UE 830 via base station 820, without explicitly involving any intermediate devices and the precise routing of messages through these devices. The network infrastructure can determine the routing, which can be configured to hide the routing from UE 830, the service provider operating host computer 810, or both. While OTT connection 850 is active, the network infrastructure can further make decisions to dynamically change the routing (e.g., based on load balancing considerations or network reconfiguration).

[0188] The wireless connection 870 between UE 830 and base station 820 is based on the teachings of the embodiments described throughout this disclosure. One or more of the various embodiments improve the performance of OTT services provided to UE 830 using OTT connection 850, with wireless connection 870 forming the final segment. More specifically, the teachings of these embodiments can improve latency and power consumption, thereby providing advantages such as reduced complexity, reduced time required to access a cell, better responsiveness, and extended battery life.

[0189] Measurement processes can be provided to monitor data rates, latency, and other factors improved by one or more embodiments. Optional network functionality can also be provided for reconfiguring the OTT connection 850 between the host computer 810 and the UE 830 in response to changes in measurement results. The measurement process and / or network functionality for reconfiguring the OTT connection 850 can be implemented in the software 811 and hardware 815 of the host computer 810, or in the software 831 and hardware 835 of the UE 830, or both. In embodiments, sensors (not shown) can be deployed in or associated with the communication devices through which the OTT connection 850 passes. The sensors can participate in the measurement process by providing values ​​for the monitored quantities exemplified above, or by providing values ​​for other physical quantities from which the software 811 or 831 can calculate or estimate the monitored quantities. Reconfiguration of the OTT connection 850 can include message formats, retransmission settings, preferred routes, and the like. Reconfiguration need not affect the base station 820, and the base station 820 may be unaware of or unaware of the reconfiguration. These processes and functionality may be known and practiced in the art. In certain embodiments, the measurements may involve proprietary UE signaling that facilitates host computer 810 measurements of throughput, propagation time, latency, etc. The measurements may be implemented as follows: software 811 and 831 uses OTT connection 850 to cause messages (particularly empty or "dummy" messages) to be transmitted while it monitors propagation time, errors, etc.

[0190] Figure 9 The communication system includes a host computer, a base station and a UE, which can be a reference Figure 7 and Figure 8 To simplify this disclosure, only the Figure 9 Reference is made to the accompanying drawings of FIG. In step 910, the host computer provides user data. In sub-step 911 of step 910 (which may be optional), the host computer provides the user data by executing a host application. In step 920, the host computer initiates a transmission carrying the user data to the UE. In step 930 (which may be optional), in accordance with the teachings of the embodiments described throughout this disclosure, the base station transmits the user data carried in the transmission initiated by the host computer to the UE. In step 940 (which may also be optional), the UE executes a client application associated with the host application executed by the host computer.

[0191] Figure 10 The communication system includes a host computer, a base station and a UE, which can be a reference Figure 7 and Figure 8To simplify this disclosure, only the Figure 10 Reference is made to the accompanying drawings of FIG. In step 1010 of the method, a host computer provides user data. In an optional sub-step (not shown), the host computer provides the user data by executing a host application. In step 1020, the host computer initiates a transmission carrying the user data to the UE. According to the teachings of the embodiments described throughout this disclosure, the transmission may pass through a base station. In step 1030 (which may be optional), the UE receives the user data carried in the transmission.

[0192] Figure 11 The communication system includes a host computer, a base station and a UE, which can be a reference Figure 7 and Figure 8 To simplify this disclosure, only the Figure 11 Reference is made to the accompanying drawings of . In step 1110 (which may be optional), the UE receives input data provided by the host computer. Additionally or alternatively, in step 1120, the UE provides user data. In sub-step 1121 (which may be optional) of step 1120, the UE provides user data by executing a client application. In sub-step 1111 (which may be optional) of step 1110, the UE executes a client application, which provides user data in response to the received input data provided by the host computer. When providing user data, the executed client application may also take into account user input received from the user. Regardless of the specific manner in which the user data is provided, the UE initiates the transmission of the user data to the host computer in sub-step 1130 (which may be optional). In step 1140 of the method, in accordance with the teachings of the embodiments described throughout this disclosure, the host computer receives the user data transmitted from the UE.

[0193] Figure 12 The communication system includes a host computer, a base station and a UE, which can be a reference Figure 7 and Figure 8 To simplify this disclosure, only the Figure 12 Reference is made to the accompanying drawings. In step 1210 (which may be optional), in accordance with the teachings of the embodiments described throughout this disclosure, the base station receives user data from the UE. In step 1220 (which may be optional), the base station initiates a transmission of the received user data to the host computer. In step 1230 (which may be optional), the host computer receives the user data carried in the transmission initiated by the base station.

[0194] According to some exemplary embodiments, a method implemented in a communication system is provided, which may include a host computer, a base station, and a UE. The method may include: providing user data at the host computer. Optionally, the method may include: initiating, at the host computer, a transmission carrying user data to the UE via a cellular network including a base station, wherein the base station may implement the method described in relation to Figure 5A Any step of the exemplary method 510 described.

[0195] According to some exemplary embodiments, a communication system including a host computer is provided. The host computer may include: processing circuitry configured to provide user data, and a communication interface configured to forward the user data to a cellular network for transmission to a UE. The cellular network may include a base station having a radio interface and processing circuitry. The processing circuitry of the base station may be configured to implement the method described in relation to Figure 5A Any step of the exemplary method 510 described.

[0196] According to some exemplary embodiments, a method implemented in a communication system is provided, which may include a host computer, a base station, and a UE. The method may include: providing user data at the host computer. Optionally, the method may include: initiating, at the host computer, a transmission carrying user data to the UE via a cellular network including the base station. The UE may implement the method described in relation to Figure 5B Any step of the exemplary method 520 described.

[0197] According to some exemplary embodiments, a communication system including a host computer is provided. The host computer may include: a processing circuit configured to provide user data, and a communication interface configured to forward the user data to a cellular network for transmission to a UE. The UE may include a radio interface and a processing circuit. The processing circuit of the UE may be configured to implement the method described in relation to Figure 5B Any step of the exemplary method 520 described.

[0198] According to some exemplary embodiments, a method implemented in a communication system is provided, which may include a host computer, a base station, and a UE. The method may include: receiving user data sent from the UE to the base station at the host computer, wherein the UE may implement Figure 5B Any step of the exemplary method 520 described.

[0199] According to some exemplary embodiments, a communication system including a host computer is provided. The host computer may include a communication interface configured to receive user data originating from a transmission from a UE to a base station. The UE may include a radio interface and a processing circuit. The processing circuit of the UE may be configured to implement the Figure 5B Any step of the exemplary method 520 described.

[0200] According to some exemplary embodiments, a method implemented in a communication system is provided, which may include a host computer, a base station, and a UE. The method may include: at the host computer, receiving from the base station user data originating from a transmission that the base station has received from the UE. The base station may implement the method as described in relation to Figure 5A Any step of the exemplary method 510 described.

[0201] According to some exemplary embodiments, a communication system is provided that may include a host computer. The host computer may include a communication interface configured to receive user data originating from a transmission from a UE to a base station. The base station may include a radio interface and processing circuitry. The processing circuitry of the base station may be configured to implement the Figure 5A Any step of the exemplary method 510 described.

[0202] In general, various exemplary embodiments can be implemented using hardware or dedicated chips, circuits, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although the disclosure is not limited thereto. Although various aspects of the exemplary embodiments of the present disclosure may be illustrated and described as block diagrams, flow charts, or using some other graphical representation, it is understood that the blocks, devices, systems, techniques, or methods described herein can be implemented in hardware, software, firmware, dedicated circuits or logic, general-purpose hardware or controllers, or other computing devices, or some combination thereof, as non-limiting examples.

[0203] Thus, it should be appreciated that at least some aspects of the exemplary embodiments of the present disclosure may be practiced in various components such as integrated circuit chips and modules. It should therefore be understood that the exemplary embodiments of the present disclosure may be implemented in a device embodied as an integrated circuit, wherein the integrated circuit may include at least circuitry (and possibly firmware) for embodying one or more of a data processor, a digital signal processor, baseband circuitry, and radio frequency circuitry that may be configured to operate in accordance with the exemplary embodiments of the present disclosure.

[0204] It should be understood that at least some aspects of the exemplary embodiments of the present disclosure may be embodied in computer-executable instructions executed by one or more computers or other devices, such as in one or more program modules. Typically, a program module includes routines, programs, objects, components, data structures, etc. that implement specific tasks or implement specific abstract data types when executed by a processor in a computer or other device. Computer-executable instructions may be stored on computer-readable media such as a hard disk, an optical disk, a removable storage medium, a solid-state memory, a random access memory (RAM), etc. As will be appreciated by those skilled in the art, the functions of the program modules may be combined or distributed as needed in various embodiments. In addition, the functions may be embodied in whole or in part in firmware or hardware equivalents (such as integrated circuits, field programmable gate arrays (FPGAs), etc.).

[0205] The present disclosure includes any novel feature or combination of features explicitly disclosed herein or arbitrarily summarized therein. In view of the foregoing description, various modifications and adaptations to the aforementioned exemplary embodiments of the present disclosure may become apparent to those skilled in the relevant art when read in conjunction with the accompanying drawings. However, any and all modifications will still fall within the scope of the non-limiting and exemplary embodiments of the present disclosure.

Claims

1. A method (510) implemented by a network node, comprising: determining (512) whether to trigger bandwidth portion configuration for subcarrier spacing switching for the terminal device based on one or more parameters of the terminal device; as well as In response to determining that the bandwidth portion configuration is to be triggered for the terminal device, sending (514) an indicator to the terminal device to trigger the bandwidth portion configuration for the subcarrier spacing switching; The method further includes: determining the device group to which the terminal device belongs based on the bandwidth portion configuration used for the terminal device, wherein each member of the device group is configured with the same subcarrier spacing and can be scheduled in a frequency band without a guard band.

2. The method according to claim 1, wherein The bandwidth part configuration instructs the terminal device to switch from a first bandwidth part to a second bandwidth part, and wherein the first bandwidth part and the second bandwidth part are configured with different subcarrier spacings.

3. The method according to claim 1 or 2, wherein: The one or more parameters of the terminal device include one or more of the following: Speed ​​factor; Multipath factor; and Business type.

4. The method according to claim 1 or 2, wherein: The one or more parameters of the terminal device are related to one or more of the following: Uplink measurement information of the terminal device; Downlink measurement information of the terminal device; and The service type requirements of the terminal device.

5. The method according to claim 1 or 2, wherein: Determining whether to trigger the bandwidth portion configuration for the subcarrier spacing switching for the terminal device according to the one or more parameters of the terminal device includes: In response to the one or more parameters satisfying a first criterion, determining to trigger the bandwidth portion configuration for switching from a first subcarrier spacing to a second subcarrier spacing for the terminal device, wherein the second subcarrier spacing is greater than the first subcarrier spacing.

6. The method according to claim 5, wherein: The first criterion indicates that a speed factor of the terminal device is greater than a first threshold and a multipath factor of the terminal device is less than a second threshold.

7. The method according to claim 5, wherein: The first criterion indicates that a difference between a weight of a speed factor and a weight of a multipath factor of the terminal device is within a first range.

8. The method according to claim 5, wherein The first criterion indicates that a traffic type of the terminal device is associated with a first delay requirement.

9. The method according to claim 1 or 2, wherein: Determining whether to trigger the bandwidth portion configuration for the subcarrier spacing switching for the terminal device according to the one or more parameters of the terminal device includes: In response to the one or more parameters satisfying a second criterion, determining to trigger the bandwidth portion configuration for switching from a third subcarrier spacing to a fourth subcarrier spacing for the terminal device, wherein the fourth subcarrier spacing is smaller than the third subcarrier spacing.

10. The method according to claim 9, wherein: The second criterion indicates that a speed factor of the terminal device is less than a third threshold and a multipath factor of the terminal device is greater than a fourth threshold.

11. The method according to claim 9, wherein The second criterion indicates that a difference between a weight of a speed factor and a weight of a multipath factor of the terminal device is within a second range.

12. The method according to claim 9, wherein The second criterion indicates that a traffic type of the terminal device is associated with a second delay requirement.

13. The method according to claim 1 or 2, wherein: Determining whether to trigger the bandwidth portion configuration for the subcarrier spacing switching for the terminal device according to the one or more parameters of the terminal device includes: In response to the one or more parameters satisfying a third criterion, determining to trigger the bandwidth portion configuration for the terminal device to switch from a fifth subcarrier spacing to a sixth subcarrier spacing, wherein the sixth subcarrier spacing is associated with an extended cyclic prefix and is larger than the fifth subcarrier spacing.

14. The method according to claim 13, wherein The third criterion indicates that the speed factor of the terminal device is greater than a fifth threshold and the multipath factor of the terminal device is greater than a sixth threshold.

15. The method according to claim 1 or 2, wherein: Determining whether to trigger the bandwidth portion configuration for the subcarrier spacing switching for the terminal device according to the one or more parameters of the terminal device includes: In response to the one or more parameters satisfying a fourth criterion, determining not to trigger the bandwidth portion configuration for the subcarrier spacing switching for the terminal device.

16. The method according to claim 15, wherein The fourth criterion indicates that the speed factor of the terminal device is less than a seventh threshold and the multipath factor of the terminal device is less than an eighth threshold.

17. The method according to claim 15, wherein: The fourth criterion indicates that a difference between a weight of a speed factor and a weight of a multipath factor of the terminal device is within a third range or is equal to a specific value.

18. The method according to claim 1 or 2, wherein: The indicator sent to the terminal device indicates a portion of the bandwidth configured with a sub-carrier spacing to which the terminal device is to switch.

19. The method according to claim 1 or 2, wherein: The indicator is sent to the terminal device in one or more of the following: Radio resource control signaling; downlink control information; and Control element used for media access control.

20. The method according to claim 1 or 2, further comprising: Information is sent to the terminal device regarding a plurality of bandwidth parts having different subcarrier spacings available to the terminal device, wherein the bandwidth part configuration is used to activate one of the plurality of bandwidth parts for the terminal device.

21. A network node (610), comprising: one or more processors (611); as well as one or more memories (612) storing computer program code (613), The one or more memories (612) and the computer program code (613) are configured to, together with the one or more processors (611), cause the network node (610) to at least: determining, based on one or more parameters of a terminal device, whether to trigger bandwidth portion configuration for subcarrier spacing switching for the terminal device; In response to determining that the bandwidth portion configuration is to be triggered for the terminal device, sending an indicator to the terminal device to trigger the bandwidth portion configuration for the subcarrier spacing switching; as well as A device group to which the terminal device belongs is determined based on the bandwidth portion configuration for the terminal device, wherein each member of the device group is configured with the same subcarrier spacing and can be scheduled in a frequency band without a guard band.

22. The network node according to claim 21, wherein: The one or more memories and the computer program code are configured to, together with the one or more processors, cause the network node to implement the method according to any one of claims 2-20.

23. A computer readable medium having computer program code (613) embodied thereon, which, when executed on a computer, causes the computer to carry out any of the steps of the method according to any one of claims 1 to 20.

24. A method (520) implemented by a terminal device, comprising: receiving (522) an indicator from a network node to trigger a bandwidth portion configuration for subcarrier spacing switching for the terminal device, wherein the bandwidth portion configuration is based at least in part on one or more parameters of the terminal device; and in response to receiving the indicator from the network node, triggering (524) the bandwidth portion configuration for the subcarrier spacing switching; The terminal device belongs to a device group, and each member of the device group is configured with the same subcarrier spacing and can be scheduled in a frequency band without a guard band.

25. The method according to claim 24, wherein The bandwidth part configuration instructs the terminal device to switch from a first bandwidth part to a second bandwidth part, and wherein the first bandwidth part and the second bandwidth part are configured with different subcarrier spacings.

26. The method according to claim 24 or 25, wherein The one or more parameters of the terminal device include one or more of the following: Speed ​​factor; Multipath factor; and Business type.

27. The method according to claim 24 or 25, wherein The one or more parameters of the terminal device are related to one or more of the following: Uplink measurement information of the terminal device; Downlink measurement information of the terminal device; and The service type requirements of the terminal device.

28. The method according to claim 24 or 25, wherein Triggering the bandwidth portion configuration for the subcarrier spacing switching includes: Bandwidth fractional switching is performed to switch from a first subcarrier spacing to a second subcarrier spacing, wherein the second subcarrier spacing is larger than the first subcarrier spacing and the one or more parameters satisfy a first criterion.

29. The method according to claim 28, wherein The first criterion indicates that a speed factor of the terminal device is greater than a first threshold and a multipath factor of the terminal device is less than a second threshold.

30. The method of claim 28, wherein The first criterion indicates that a difference between a weight of a speed factor and a weight of a multipath factor of the terminal device is within a first range.

31. The method of claim 28, wherein The first criterion indicates that a traffic type of the terminal device is associated with a first delay requirement.

32. The method according to claim 24 or 25, wherein Triggering the bandwidth portion configuration for the subcarrier spacing switching includes: Bandwidth fractional switching is performed to switch from a third subcarrier spacing to a fourth subcarrier spacing, wherein the fourth subcarrier spacing is smaller than the third subcarrier spacing and the one or more parameters satisfy a second criterion.

33. The method according to claim 32, wherein The second criterion indicates that a speed factor of the terminal device is less than a third threshold and a multipath factor of the terminal device is greater than a fourth threshold.

34. The method of claim 32, wherein: The second criterion indicates that a difference between a weight of a speed factor and a weight of a multipath factor of the terminal device is within a second range.

35. The method of claim 32, wherein: The second criterion indicates that a traffic type of the terminal device is associated with a second delay requirement.

36. The method according to claim 24 or 25, wherein Triggering the bandwidth portion configuration for the subcarrier spacing switching includes: Bandwidth fractional switching is performed to switch from a fifth subcarrier spacing to a sixth subcarrier spacing, wherein the sixth subcarrier spacing is associated with an extended cyclic prefix and is larger than the fifth subcarrier spacing, and the one or more parameters satisfy a third criterion.

37. The method according to claim 36, wherein The third criterion indicates that the speed factor of the terminal device is greater than a fifth threshold and the multipath factor of the terminal device is greater than a sixth threshold.

38. The method according to claim 24 or 25, wherein The indicator received from the network node indicates a portion of the bandwidth configured with a subcarrier spacing to which the terminal device is to switch.

39. The method according to claim 24 or 25, wherein Receiving the indicator from the network node in one or more of: Radio resource control signaling; downlink control information; and Control element used for media access control.

40. The method of claim 24 or 25, further comprising: Information is received from the network node regarding a plurality of bandwidth parts having different subcarrier spacings available for the terminal device, wherein the bandwidth part configuration is used to activate one of the plurality of bandwidth parts for the terminal device.

41. A terminal device (610), comprising: one or more processors (611); as well as one or more memories (612) storing computer program code (613), The one or more memories (612) and the computer program code (613) are configured to, together with the one or more processors (611), cause the terminal device (610) to at least: receiving an indicator from a network node to trigger a bandwidth portion configuration for subcarrier spacing switching for the terminal device, wherein the bandwidth portion configuration is based at least in part on one or more parameters of the terminal device; and triggering the bandwidth portion configuration for the subcarrier spacing switching in response to receiving the indicator from the network node; The terminal device belongs to a device group, and each member of the device group is configured with the same subcarrier spacing and can be scheduled in a frequency band without a guard band.

42. The terminal device according to claim 41, wherein: The one or more memories and the computer program code are configured to, together with the one or more processors, cause the terminal device to implement the method according to any one of claims 25-40.

43. A computer readable medium having computer program code (613) embodied thereon which, when executed on a computer, causes the computer to carry out any of the steps of the method according to any of claims 24-40.

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