CN113016209A

CN113016209A - Wireless communication method, network equipment and terminal equipment

Info

Publication number: CN113016209A
Application number: CN201980074300.5A
Authority: CN
Inventors: 石聪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2021-06-22
Also published as: WO2020248280A1

Abstract

The embodiment of the application provides a wireless communication method, a network device and a terminal device, which can realize the flexible switching of BWP. The method comprises the following steps: receiving a downlink dynamic signaling; and according to the indication of the downlink dynamic signaling, the terminal equipment switches the BWP of at least one secondary cell group or a plurality of secondary cells from the first BWP to the second BWP or from the second BWP to the first BWP.

Description

Wireless communication method, network equipment and terminal equipment

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a wireless communication method, network equipment and terminal equipment.

Background

In order to provide a larger data transmission rate and improve user experience, the system bandwidth is further increased on the basis of 4G by a 5G New Radio (NR). Like a Long Term Evolution (LTE) system, the 5G NR also supports a Carrier Aggregation (CA) technique. The network configures a plurality of service cells for the terminal, and the terminal can simultaneously transmit and receive data in the plurality of service cells, so that the data transmission rate is improved.

For each serving cell of a terminal, a network device may configure one or more BandWidth parts (BWPs) for the terminal on the serving cell, and how to implement handover between BWPs is an urgent problem.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, a network device and a terminal device, which can realize the flexible switching of BWP.

In a first aspect, a wireless communication method is provided, including: receiving a downlink dynamic signaling;

and according to the indication of the downlink dynamic signaling, the terminal equipment switches the BWP of at least one secondary cell group or a plurality of secondary cells from the first BWP to the second BWP or from the second BWP to the first BWP.

In a second aspect, a wireless communication method is provided, the method comprising: adjusting a configuration of BWP of at least one or at least one group of secondary cells; the configuration before adjustment differs from the configuration after adjustment in at least one of the following ways: the number of layers of an MIMO layer adopted when data are transmitted on the BWP, whether a time interval between a control channel sent on the BWP and a data channel scheduled by the control channel is larger than or equal to a threshold value or not, and whether PDCCH search is carried out on the BWP or not; communicating with a network device on the BWP with the adjusted configuration parameters.

In a third aspect, a wireless communication method is provided, including: and sending downlink dynamic signaling to the terminal device, wherein the downlink dynamic signaling instructs the terminal device to switch the BWP of at least one secondary cell group or a plurality of secondary cells from the first BWP to the second BWP or from the second BWP to the first BWP.

In a fourth aspect, a wireless communication method is provided, the method comprising: adjusting a configuration of BWP of at least one or at least one group of secondary cells; the configuration before adjustment differs from the configuration after adjustment in at least one of the following ways: the number of layers of an MIMO layer adopted when data are transmitted on the BWP, whether a time interval between a control channel sent on the BWP and a data channel scheduled by the control channel is larger than or equal to a threshold value or not, and whether PDCCH search is carried out on the BWP or not; communicating with a terminal device on the BWP with the adjusted configuration parameters.

In a fifth aspect, there is provided a communication device for performing the method of any of the first to fourth aspects.

In particular, the communication device comprises functional modules for performing the method of any of the first to fourth aspects described above.

In a sixth aspect, a communication device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method of any one of the first to fourth aspects.

In a seventh aspect, a chip is provided for implementing the method of any one of the first to fourth aspects.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device on which the chip is installed performs the method in any one of the first to fourth aspects or the implementation manners thereof.

In an eighth aspect, there is provided a computer readable storage medium storing a computer program for causing a computer to perform the method of any of the first to fourth aspects described above.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any of the first to fourth aspects described above.

A tenth aspect provides a computer program which, when run on a computer, causes the computer to perform the method of any of the first to fourth aspects described above.

Therefore, in the embodiment of the present application, in response to the indication of the downlink dynamic signaling, the terminal device may switch BWP of the at least one secondary cell group or the multiple secondary cells, may implement flexible BWP adjustment, and after receiving the downlink dynamic signaling, the terminal device switches BWP of the at least one secondary cell group or the multiple secondary cells, may save signaling overhead.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of a wireless communication method provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of BWP handover provided in an embodiment of the present application.

Fig. 4 is a schematic diagram of BWP handover provided in an embodiment of the present application.

Fig. 5 is a schematic diagram of BWP handover provided in an embodiment of the present application.

Fig. 6 is a schematic diagram of BWP handover provided in an embodiment of the present application.

Fig. 7 is a schematic diagram of a wireless communication method provided in an embodiment of the present application.

Fig. 8 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 13 is a schematic block diagram of a communication device according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In order to provide a larger data transmission rate and improve the user experience, the 5G NR further increases the system bandwidth on the basis of 4G. In 5G NR, the maximum bandwidth which can be supported by a single carrier is 100MHz for a frequency band below 6 GHz; for the frequency band above 6GHz, the maximum bandwidth that can be supported by a single carrier is 400 MHz.

Like the LTE system, the 5G NR also supports a Carrier Aggregation (CA) technique. The network equipment configures a plurality of service cells for the terminal equipment, and the terminal equipment can simultaneously transmit and receive data in the plurality of service cells, so that the data transmission rate is improved.

On the other hand, for a large carrier bandwidth, such as 100HMz, the bandwidth required by the terminal device is often very limited, and if the terminal device is allowed to perform detection and measurement on the entire bandwidth all the time, it will bring a great challenge to the power consumption of the terminal device, which is not favorable for power saving of the terminal device. Therefore, the concept of BandWidth Part (BWP) is introduced in the 5G NR, that is, a Part of continuous BandWidth is divided within the whole large BandWidth carrier to transmit and receive data to and from the terminal device. The terminal device can perform relevant operation only in the part of the bandwidth configured by the network device, thereby achieving the effect of saving energy of the terminal device.

For each serving cell of the terminal device, the network device may configure one or more BWPs on this serving cell for the terminal device through (Radio Resource Control, RRC), and the configurable maximum number of BWPs may optionally be 4. At each time, the terminal device may only have 1 activated Downlink (DL) BWP and 1 activated Uplink (UL) BWP in the serving cell, and the terminal device may only perform data transceiving on the activated BWP.

The terminal device may obtain the Downlink or uplink scheduling information by receiving a Physical Downlink Control Channel (PDCCH) sent by the network device, so as to further complete receiving and sending of the service data. The time when the network device schedules the terminal device is not fixed, and the terminal device needs to blindly detect the PDCCH because no relevant signaling informs the terminal network whether to send the PDCCH to the terminal. In order to reduce the complexity of blind detection of the terminal device, the set of blind detection PDCCHs needs to be limited. Therefore, a search space, i.e., a set of PDCCH resources that the terminal needs to blind detect, may be introduced. The network device may configure one or more PDCCH search spaces for each BWP of the terminal, where each PDCCH search space corresponds to one PDCCH monitoring period. The terminal device may listen to the PDCCH only on the currently activated BWP and perform data transceiving.

In the CA configuration, if the terminal device is in a DRX Active Time (Discontinuous Reception, DRX), the terminal device may blindly detect PDCCHs on all serving cells including a Primary Cell (PCell) and a Secondary Cell (SCell), which may cause an increase in PDCCH blind detection overhead of the terminal device and is not favorable for power saving of the terminal device. The PDCCH blind detection overhead on the SCell may be reduced in several ways:

since scells are mainly used for offload large data volume when traffic is large, one way is that if the network device determines that the data volume is reduced, the network device may activate some scells in advance. However, this approach has the disadvantage that the arrival of traffic is random, and the reactivation of the SCell requires a relatively long delay (e.g. 40ms), which has an impact on the throughput required by the traffic.

Alternatively, wake-up signaling (WUS) may be used to indicate which scells the terminal device may not need to blind-detect the PDCCH during the next DRX duration (DRX on duration), which can flexibly control the terminal device to blind-detect the PDCCH on the SCell, but when the traffic is low, the network may be required to frequently send signaling so that the terminal device does not blind-detect the PDCCH on the SCell.

Fig. 2 is a schematic flow chart diagram of a wireless communication method 200 according to an embodiment of the present application. The method 200 includes at least some of the following.

In 210, the network device sends downlink dynamic signaling to the terminal device, where the downlink dynamic signaling instructs the terminal device to switch BWP of at least one secondary cell group or multiple secondary cells from the first BWP to the second BWP or from the second BWP to the first BWP.

The downlink dynamic signaling mentioned in the embodiment of the present application may be layer 1(L1) signaling or layer 2(L2) signaling.

The Downlink dynamic signaling mentioned in the embodiment of the present application may be Downlink Control Information (DCI), where the DCI may be obtained by a terminal device blindly detecting a PDCCH, and the PDCCH may be scrambled by a Cell Radio Network temporary Identity (C-RNTI), may be scrambled by Configuration Scheduling (CS) -RNTI (CS-RNTI), and may be scrambled by a new RNTI, for example, a PS-RNTI.

The secondary cell group mentioned in the embodiments of the present application may include one or more secondary cells. In this embodiment, the grouping of the secondary cells may be RRC signaling configuration.

In this embodiment of the present application, the downlink dynamic signaling may be sent through a primary cell or a primary secondary cell (PSCell). Or, in this embodiment of the present application, the downlink dynamic signaling may also be sent through the secondary cell. The secondary cell may belong to the at least one secondary cell group or a plurality of secondary cells.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is used to indicate the at least one secondary cell group or multiple secondary cells that need to switch BWP. That is, the downlink dynamic signaling may have an information field that may indicate which secondary cell groups or secondary cells may need to perform BWP handover. Indicating that the secondary cell group needs to handover BWP, it may be that all secondary cells within the secondary cell group are handed over BWP.

Or, in this embodiment of the present application, the downlink dynamic signaling does not indicate the at least one secondary cell group or multiple secondary cells that need to switch BWP; the at least one secondary cell group or the plurality of secondary cells includes a secondary cell configured with the first BWP.

That is, the downlink dynamic signaling may not indicate which secondary cell groups or secondary cells need BWP handover, and the terminal device may perform BWP handover on these secondary cells or secondary cell groups according to which secondary cells or secondary cell groups are configured with a specific BWP (first BWP or second BWP).

In the embodiment of the present application, the terminal device may decide whether to perform BWP handover on the secondary cells or the secondary cell group according to whether the BWP before handover of the secondary cells or the secondary cell group is a specific BWP.

Alternatively, in this embodiment, the terminal device may determine whether to perform BWP handover on the secondary cells or the secondary cells according to whether the secondary cells or the secondary cell group configure BWP to be handed over.

Optionally, in this embodiment of the present application, the downlink dynamic signaling may indicate which BWP is the BWP before the handover, and then the currently-owned BWP is the secondary cell or the secondary cell group of the BWP indicated by the downlink dynamic signaling to perform the BWP handover.

Optionally, in this embodiment of the present application, the downlink dynamic signaling may indicate which BWPs the switched BWP is, and the secondary cell or the secondary cell group may switch the BWP to the indicated BWP.

Of course, in the embodiment of the present application, the downlink dynamic signaling may indicate both the BWP before the handover and the BWP after the handover.

The BWP mentioned in the embodiments of the present application may be a downlink BWP or an uplink BWP.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is downlink dynamic signaling detected in a discontinuous reception DRX Active Time (DRX Active Time).

Optionally, in this embodiment of the present application, the downlink dynamic signaling is detected before a DRX duration timer is started. Wherein, the downlink dynamic signaling is further used for indicating whether the terminal device needs to start the DRX duration timer. The switching of BWP can be instructed by means of downlink dynamic signaling whether to start the DRX duration timer, so that the signaling overhead can be saved.

In 220, the terminal device receives the downlink dynamic signaling.

In 230, according to the indication of the downlink dynamic signaling, the terminal device switches the BWP of the at least one secondary cell group or multiple secondary cells from the first BWP to the second BWP, or from the second BWP to the first BWP. In the embodiment of the present application, switching from the first BWP to the second BWP may refer to switching the active BWP of the terminal device from the first BWP to the second BWP. Switching from the second BWP to the first BWP may refer to switching the active BWP of the terminal device from the second BWP to the first BWP

The terminal device switches BWP of at least one secondary cell group or multiple secondary cells from the first BWP to the second BWP, or from the second BWP to the first BWP, meaning that the terminal device may communicate on the switched BWP, e.g., may detect the reference signal and/or PDCCH on the switched BWP if the BWP is a downlink BWP. If the BWP is an Uplink BWP, a Physical Uplink Shared Channel (PUSCH) and/or a Physical Uplink Control Channel (PUCCH) may be transmitted on the switched BWP.

However, for the network device, the BWP of at least one secondary cell group or multiple secondary cells is also switched from the first BWP to the second BWP, or from the second BWP to the first BWP, meaning that the network device may communicate on the switched BWP, e.g., if the BWP is a downlink BWP, the reference signal and/or PDCCH may be sent on the switched BWP. If the BWP is an uplink BWP, the PUSCH and/or PUCCH may be received at the switched BWP.

Optionally, in this embodiment of the present application, the terminal device does not blindly detect the control channel in the second BWP; and/or the number of layers of a multiple-input multiple-output (MIMO) layer employed when the second BWP transmits data is different from the number of layers of a MIMO layer employed when the first BWP transmits data; and/or a time interval between a control channel transmitted on the second BWP and a data channel scheduled by the control channel is greater than or equal to a threshold value and a time interval between a control channel transmitted on the first BWP and a data channel scheduled by the control channel is less than the threshold value; and/or the period of the search space configured on the second BWP is smaller than the period of the search space configured on the first BWP.

Specifically, after receiving the downlink dynamic signaling, the terminal device may not blindly detect the control channel on the second BWP (which means that the second BWP is not configured with the search space, or does not blindly detect the search space although the search space is configured), so as to save the power of the terminal device, and the network device may not transmit the control channel for the terminal device on the second BWP, where the terminal device may determine whether to transmit the downlink dynamic signaling according to the traffic of the terminal device, and indicate that the PDCCH is not blindly detected on the second BWP, and at this time, the second BWP may be referred to as a power saving BWP. In the embodiment of the present application, the downlink reference signal may be detected on the second BWP without blind detection of the PDCCH on the second BWP.

Optionally, in this embodiment, the number of MIMO layers employed when the second BWP transmits data is different from the number of MIMO layers employed when the first BWP transmits data, for example, the number of MIMO layers employed on the second BWP may be greater than the number of MIMO layers employed on the first BWP, or the number of MIMO layers employed on the first BWP may be smaller than the number of MIMO layers employed on the first BWP (in this case, the second BWP may be referred to as a power-saving BWP).

Optionally, in this embodiment of the present application, a time interval between the control channel transmitted on the second BWP and the data channel scheduled by the control channel is greater than or equal to a threshold value, and a time interval between the control channel transmitted on the first BWP and the data channel scheduled by the control channel is smaller than the threshold value. The preset value mentioned here may be preset on the terminal device, or may be configured to the terminal device by the network device.

Optionally, in this embodiment of the present application, the network device may configure one or more downlink BWPs (or uplink BWPs) (e.g., 5) for each serving cell or serving cell group of the terminal device, and may include a second BWP in the configured BWPs. Alternatively, one or more first BWPs (e.g., 4 may be configured), and one second BWP.

In the embodiment of the present application, switching from the first BWP to the second BWP may be indicated based on downlink dynamic signaling, and switching from the second BWP to the first BWP or another BWP may also be indicated based on downlink dynamic signaling.

It is mentioned above that the BWP handover may be performed on at least one secondary cell group or multiple secondary cells based on the indication of the downlink dynamic signaling, but the embodiment of the present application is not limited thereto, and in the embodiment of the present application, the BWP handover may also be performed due to timer timeout or random access initialization based on the indication of RRC signaling.

As an example, in the embodiment of the present application, each time the terminal device starts the timer after completing the BWP handover of multiple secondary cells or at least one secondary cell group, and when the timer expires, the timer may be started again, and the duration of the timer started each time may be the same or different, and may be related to the currently handed over BWP.

Illustratively, downlink dynamic signaling and timers may be used in conjunction to trigger a handover of BWP. The terminal device receives the downlink dynamic signaling, and based on the indication of the downlink dynamic signaling, the terminal device switches the BWP of at least one secondary cell group or a plurality of secondary cells from the first BWP to the second BWP. And, the terminal device may start a timer for each secondary cell or each secondary cell group (the duration of the timer started by different secondary cells or secondary cell groups may be the same or different), where the timer is used to determine the staying time of the terminal device on the second BWP after the handover. The duration of the timer may be configured by RRC signaling, or may be indicated by downlink dynamic signaling.

When there is a timer timeout, the BWP of the secondary cell or group of secondary cells to which the timer corresponds may be switched from the second BWP back to the first BWP or to another BWP (e.g., the initial BWP or the default BWP).

The terminal device may restart the timer if it receives downlink dynamic signaling again during the running of the timer, the downlink dynamic signaling indicating that the downlink BWP is switched to the second BWP.

Alternatively, the timer mentioned in the embodiment of the present application may be a DRX inactivity timer (DRX-inactivity timer).

At this time, the downlink dynamic signaling may be detected within the DRX activator.

Specifically, the terminal device may also blindly detect the PDCCH in DRX Active Time so as to obtain the DCI, wherein the PDCCH is scrambled by the C-RNTI or the CS-RNTI. The PDCCH may instruct downlink active BWP handover to Power Saving (PS) BWP (PS BWP) on multiple or at least one group SCell;

the terminal equipment receives the PDCCH, and can start or restart the drx-inactivity timer, and the terminal equipment is kept on PS BWP during the drx-inactivity timer operation period; when drx-inactivity timer times out, the terminal device switches to the previously activated BWP, either the initial BWP or the default BWP.

It should be understood that, in the embodiment of the present application, each secondary cell group or secondary cell may correspond to one timer, or all the secondary cell groups or secondary cells may correspond to one timer.

Alternatively, in this embodiment, the switching from the first BWP to the second BWP may be based on the indication of the downlink dynamic signaling, and the terminal device may keep the secondary cell or the secondary cell group on the second BWP until the next time the dynamic signaling needs to be detected again, and if the downlink dynamic signaling is detected, if the signaling indicates that the BWP of at least one secondary cell group or multiple secondary cells is switched to the second BWP, the switching of BWP may not be performed, and the terminal device still remains on the second BWP. If the terminal device does not detect downlink dynamic signaling, the terminal device may switch the BWP of the at least one secondary cell group or the plurality of secondary cells from the second BWP to the first BWP or another BWP, e.g., the initial BWP or the default BWP.

Specifically, the terminal device detects a dynamic signaling within a certain time period before a DRX-onduration timer of a DRX cycle is started, and the dynamic signaling indicates that the terminal device switches to PS BWP, and the terminal device still maintains the PS BWP; the terminal device remains in the PS BWP until the next DRX cycle; if the UE detects dynamic signaling in a certain time period before the DRX-ondurationTimer of the next DRX period is started, and the dynamic signaling indicates that the terminal equipment is switched to PS BWP, the UE still keeps in the PS BWP; if the terminal device does not detect the dynamic signaling within a certain time period before the DRX-onduration timer of the next DRX terminal device is started, the terminal device switches to a downlink BWP, where the downlink BWP may be a previously activated downlink BWP, or may be an initial BWP or a default downlink BWP.

Optionally, in this embodiment of the present application, the terminal device receives a downlink dynamic signaling indicating that the BWP of the at least one secondary cell group or the plurality of secondary cells is switched from the first BWP to the second BWP, and then the terminal device switches the BWP of the at least one secondary cell group or the plurality of secondary cells from the first BWP to the second BWP, and receives a downlink dynamic signaling again indicating that the BWP of the at least one secondary cell group or the plurality of secondary cells is switched from the second BWP back to the first BWP, and then the terminal device switches the BWP of the at least one secondary cell group or the plurality of secondary cells from the second BWP to the first BWP.

Specifically, after the terminal device switches the currently active DL BWP of at least one secondary cell group or multiple secondary cells to PS BWP based on dynamic signaling, the terminal device remains on the PS BWP and remains on the PS BWP until receiving another dynamic signaling, where the dynamic signaling indicates the UE to switch to non-PS BWP; the other dynamic signaling may be the same as or different from the dynamic signaling for switching the terminal device to the PS BWP; another dynamic signaling may instruct the terminal device to switch to a non-PS BWP on a certain/group or groups of scells. The non-PS BWP may be indicated by the further dynamic signaling or may be network pre-configured.

In order to more clearly understand the present application, embodiments of the present application are described below with reference to fig. 3 to 6.

As shown in fig. 3, the UE is configured with three scells, where on secondary cell (SCell) group 1 and secondary cell (SCell)2, the network device configures the UE with PS BWP. The network device does not configure PS BWP for the UE on SCell 3.

In one scheme, the UE receives a dynamic indication signaling on a PCell or a PSCell, and the UE switches the current downlink activation BWP on a secondary cell group 1 and a secondary cell group 2 to a pre-configured PS BWP; the UE blindly detects a PDCCH before starting the drx-on duration timer, where the PDCCH indicates whether the UE is to start the drx-on duration timer, and also indicates whether the UE is to switch a currently activated downlink BWP on the SCell to a PS BWP. As shown in fig. 4, in the first DRX cycle, the UE blindly detects a PDCCH before starting DRX-on duration timer, where the PDCCH instructs the UE to start DRX-on duration timer, and at the same time, the PDCCH also instructs the downlink active BWP on the SCell to switch to PS BWP; as shown in fig. 5, in secondary cell group 1 or secondary cell group 2, when the UE switches to PS BWP, the UE starts a timer during which the UE remains at PS BWP, and when the timer expires, the UE can switch to the previously activated downlink BWP, or can switch to the initial or default BWP. Assuming that the PS BWP index is 1, the previously activated DL BWP index is 2, and the initial or default BWP is #3, the UE may switch to #2BWP or #3BWP when the timer expires. It is noted that the index of the initial or default BWP may be different.

In another scheme, as shown in fig. 6, on secondary cell group 1 or secondary cell group 2, according to the PDCCH indication, the UE switches DL BWP on secondary cell group 1 and secondary cell group 2 to PS BWP, and the UE remains in the PS BWP. When received, the PDCCH may instruct the UE to handover the PS BWP to another BWP on secondary cell group 1 and secondary cell group 2.

Optionally, in this embodiment, the BWP of at least one secondary cell group or multiple secondary cells may be adjusted according to the change of traffic, so that power loss may be avoided.

Fig. 7 is a schematic flow chart diagram of a wireless communication method 300 according to an embodiment of the application. The method 300 includes at least some of the following.

In 310, the network device adjusts a configuration of BWP of at least one or at least one group of secondary cells;

optionally, the configuration before adjustment is different from the configuration after adjustment in at least one of the following aspects: the number of layers of an MIMO layer adopted when data are transmitted on the BWP, whether a time interval between a control channel sent on the BWP and a data channel scheduled by the control channel is larger than or equal to a threshold value or not, and whether PDCCH search is carried out on the BWP or not;

in 320, the terminal device adjusts the configuration of the BWP of at least one or at least one group of secondary cells;

at 330, communication is performed between a network device and a terminal device over the BWP with the adjusted configuration parameters.

Optionally, in this embodiment of the present application, according to the indication of the downlink dynamic signaling, the terminal device adjusts the configuration of the BWP of at least one or at least one group of secondary cells.

The Downlink dynamic signaling mentioned in the embodiment of the present application may be Downlink Control Information (DCI), where the DCI may be obtained by a terminal device through blind detection of a PDCCH, and the PDCCH may be scrambled by a C-RNTI, may be scrambled by a CS-RNTI, and may be scrambled by a new RNTI, for example, a PS-RNTI.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is used to indicate the at least one secondary cell group or multiple secondary cells that need to adjust the configuration of BWP. That is, the downlink dynamic signaling may have an information field that may indicate which secondary cell groups or secondary cells may need to be adjusted for the configuration of BWP. Indicating that the secondary cell group needs to adjust the configuration of BWP, it may be that all secondary cells within the secondary cell group make adjustments to the configuration of BWP.

Or, in this embodiment of the present application, the downlink dynamic signaling does not indicate the at least one secondary cell group or multiple secondary cells that need to adjust the configuration of BWP; the at least one secondary cell group or the plurality of secondary cells includes secondary cells configured with an adjusted BWP configuration.

That is, the downlink dynamic signaling may not indicate which secondary cell groups or secondary cells need to perform adjustment of the BWP configuration, and the terminal device may perform adjustment of the BWP configuration on these secondary cells or secondary cell groups according to which BWPs of the secondary cells or secondary cell groups have specific configurations.

In the embodiment of the present application, the terminal device may decide whether to adjust the configuration of the BWP for the secondary cells or the secondary cell group according to whether the BWP configuration before adjustment of the secondary cells or the secondary cell group is the specific BWP configuration.

Alternatively, in the embodiment of the present application, the terminal device may decide whether to adjust the BWP configuration of the secondary cell or the secondary cell group according to whether the BWP configuration of the secondary cell or the secondary cell group is a specific BWP configuration.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is detected before a DRX duration timer is started. Wherein, the downlink dynamic signaling is further used for indicating whether the terminal device needs to start the DRX duration timer. The adjustment of the BWP configuration can be instructed by means of downlink dynamic signaling whether to start the DRX duration timer, so that the signaling overhead can be saved.

The configuration before adjustment differs from the configuration after adjustment in at least one of the following ways: the number of layers of the MIMO layer used when transmitting data on the BWP, whether a time interval between a control channel transmitted on the BWP and a data channel scheduled by the control channel is greater than or equal to a threshold, and whether to search for a PDCCH on the BWP.

Alternatively, in the BWP of the embodiment of the present application, the BWP may have two configurations, and in the second configuration, the number of MIMO layers used for transmitting data on the BWP is lower than that in the first configuration.

In a second configuration, a time interval between a control channel transmitted on the BWP and a data channel scheduled by the control channel is smaller than a threshold, and in a first configuration, the time interval is larger than the threshold.

In the second configuration, the search for PDCCH is not performed on BWP. In a first configuration, the search for PDCCH is performed under BWP.

The first configuration may be referred to as a PS configuration, which may save power on the terminal device.

In this embodiment, the adjustment from the first configuration to the second configuration may be based on the indication of the downlink dynamic signaling, and the adjustment from the second configuration to the first configuration or other configurations may also be based on the indication of the downlink dynamic signaling.

It is mentioned above that the adjustment of the BWP configuration may be performed on at least one secondary cell group or secondary cell based on the indication of the downlink dynamic signaling, but the embodiment of the present application is not limited thereto, and in the embodiment of the present application, the adjustment of the BWP configuration may also be performed due to timer timeout or random access initialization based on the indication of RRC signaling.

As an example, in the embodiment of the present application, each time the terminal device starts the timer after adjusting the BWP configuration of at least one secondary cell or at least one secondary cell group, and when the timer expires, the timer may be started again, and the duration of the timer started each time may be the same or different, and may be related to the currently adjusted configuration.

Illustratively, downlink dynamic signaling and timers may be used in conjunction to trigger adjustment of BWP. The terminal equipment receives the downlink dynamic signaling, and based on the indication of the downlink dynamic signaling, the terminal equipment adjusts the BWP of at least one secondary cell group or a plurality of secondary cells from the first configuration to the second configuration. Moreover, the terminal device may start a timer for each secondary cell or each secondary cell group (the durations of the timers started by different secondary cells or secondary cell groups may be the same or different), and the timer is used for determining the retention time of the terminal device in the adjusted second configuration. The duration of the timer may be configured by RRC signaling, or may be indicated by downlink dynamic signaling.

When there is a timer timeout, the configuration of the secondary cell or the secondary cell group corresponding to the timer may be switched from the second configuration back to the first configuration or to another configuration (e.g., initial configuration or default configuration).

The terminal device may restart the timer if it receives downlink dynamic signaling again during the running of the timer, where the downlink dynamic signaling indicates to switch the configuration of the downlink BWP to the second configuration.

Specifically, the terminal device may also blindly detect the PDCCH in DRX Active Time so as to obtain the DCI, wherein the PDCCH is scrambled by the C-RNTI or the CS-RNTI. The PDCCH may indicate that downlink active BWP on multiple or at least one group SCell is handed over to Power Save (PS) BWP (PS BWP);

the terminal equipment receives the PDCCH, and can start or restart the drx-inactivity timer terminal equipment, and the terminal equipment is kept in the second configuration during the drx-inactivity timer operation period; when the drx-inactivity timer times out, the terminal equipment adjusts to the previous configuration, or the initial configuration, or the default configuration.

Optionally, in this embodiment of the present application, the adjustment from the first configuration to the second configuration may be based on the indication of the downlink dynamic signaling, and the terminal device may keep the BWP of the secondary cell or the secondary cell group in the second configuration until the dynamic signaling needs to be detected again next time, and if the downlink dynamic signaling is detected, if the signaling indicates that the configuration of the BWP of at least one secondary cell group or the secondary cell is adjusted to the second configuration, the adjustment of the configuration of the BWP may not be performed, and the terminal device still keeps the second configuration. If the terminal device does not detect the downlink dynamic signaling, the terminal device may adjust the configuration of the BWP of the at least one secondary cell group or secondary cells from the second configuration back to the first configuration, or another configuration, e.g., may be an initial configuration or a default configuration.

Specifically, the terminal device detects a dynamic signaling within a certain time period before a DRX-onduration timer of the DRX cycle is started, and the dynamic signaling instructs the terminal device to adjust the BWP configuration to the second configuration, so that the terminal still maintains the second configuration; the terminal equipment keeps the second configuration until the next DRX period; if the UE detects dynamic signaling in a certain time period before the DRX-ondurationTimer of the next DRX period is started, and the dynamic signaling instructs the terminal equipment to adjust the configuration of the BWP to the second configuration, the UE still maintains the second configuration; if the terminal device does not detect the dynamic signaling within a certain time period before the DRX-onduration timer of the next DRX terminal device is started, the terminal device adjusts the BWP configuration to another configuration, where the adjusted configuration may be the previous configuration, or may be the initial configuration or the default configuration.

Optionally, in this embodiment of the present application, the terminal device receives a downlink dynamic signaling to indicate to switch the configuration of the BWP of the at least one secondary cell group or secondary cell from the first configuration to the second configuration, then the terminal device adjusts the configuration of the BWP of the at least one secondary cell group or secondary cell from the first configuration to the second configuration, and receives a downlink dynamic signaling again to indicate to switch the configuration of the BWP of the at least one secondary cell group or secondary cell from the second configuration back to the first configuration, then the terminal device switches the configuration of the BWP of the at least one secondary cell group or secondary cell from the second configuration to the first configuration.

Therefore, in the embodiment of the present application, the configuration of BWP of the secondary cell or the secondary cell group may be adjusted, and the configuration before the adjustment is different from the configuration after the adjustment in at least one of the following aspects: the number of MIMO layers used when data is transmitted over the BWP, whether the time interval between the control channel sent over the BWP and the data channel scheduled by the control channel is greater than or equal to a threshold value, whether to search for the PDCCH on the BWP, and may implement flexible adjustment of the number of MIMO layers, the time interval between the control channel and the data channel, and whether to search for the PDCCH, and may save the power of the terminal device if necessary.

Fig. 8 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal device 400 comprises a communication unit 410 configured to receive downlink dynamic signaling, and according to an indication of the downlink dynamic signaling, switch BWP of at least one secondary cell group or multiple secondary cells from a first BWP to a second BWP or from the second BWP to the first BWP.

Optionally, in this embodiment of the present application, the communication unit does not blindly detect the control channel in the second BWP; and/or the number of layers of the MIMO layer adopted when the second BWP transmits data is different from the number of layers of the MIMO layer adopted when the first BWP transmits data; and/or a time interval between the control channel transmitted on the second BWP and the data channel scheduled by the control channel is greater than or equal to a threshold value and a time interval between the control channel transmitted on the first BWP and the data channel scheduled by the control channel is less than the threshold value.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is detected in a DRX activation period.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is detected before a DRX duration timer is started.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is further used to indicate whether the terminal device needs to start the DRX duration timer.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is used to indicate the at least one secondary cell group or multiple secondary cells that need to switch BWP.

Optionally, in this embodiment of the present application, the downlink dynamic signaling does not indicate the at least one secondary cell group or multiple secondary cells that need to switch BWP;

the at least one secondary cell group or the plurality of secondary cells includes a secondary cell configured with the first BWP.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is received on a primary cell of the terminal device.

It should be understood that the terminal device 400 may be used to implement the corresponding operations implemented by the terminal device in the method 200, and for brevity, the description is omitted here.

Fig. 9 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application. The terminal device 500 comprises a processing unit 510 for adapting a configuration of BWP of at least one or at least one group of secondary cells; the configuration before adjustment differs from the configuration after adjustment in at least one of the following ways: the number of layers of an MIMO layer adopted when data are transmitted on the BWP, whether a time interval between a control channel sent on the BWP and a data channel scheduled by the control channel is larger than or equal to a threshold value or not, and whether PDCCH search is carried out on the BWP or not; a communication unit 520, configured to communicate with a network device on the BWP with the adjusted configuration parameters.

Optionally, in this embodiment of the present application, the processing unit 510 is further configured to:

and adjusting the configuration of the BWP according to the indication of the downlink dynamic signaling.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is dynamic signaling detected in a DRX activation period.

Optionally, in this embodiment of the present application, the downlink dynamic signaling further indicates the at least one or at least one group of secondary cells that need to adjust the configuration of BWP.

It should be understood that the terminal device 500 may be used to implement the corresponding operations implemented by the terminal device in the method 300, and therefore, for brevity, the description is not repeated herein.

Fig. 10 is a schematic block diagram of a network device 600 according to an embodiment of the present application. The network device 600 comprises a communication unit 610 for sending downlink dynamic signaling to the terminal device, the downlink dynamic signaling instructing the terminal device to switch BWP of at least one secondary cell group or a plurality of secondary cells from the first BWP to the second BWP or from the second BWP to the first BWP.

Optionally, in this embodiment of the present application, the communication unit does not transmit the control channel in the second BWP; and/or the number of layers of the MIMO layer adopted when the second BWP transmits data is different from the number of layers of the MIMO layer adopted when the first BWP transmits data; and/or a time interval between the control channel transmitted on the second BWP and the data channel scheduled by the control channel is greater than or equal to a threshold value and a time interval between the control channel transmitted on the first BWP and the data channel scheduled by the control channel is less than the threshold value.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is downlink dynamic signaling sent in a DRX activation period.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is sent before a DRX duration timer is started.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is sent on a primary cell of the terminal device.

It should be understood that the network device 600 may be used to implement the corresponding operations implemented by the network device in the method 200, and therefore, for brevity, will not be described in detail here.

Fig. 11 is a schematic block diagram of a network device 700 according to an embodiment of the present application. The network device 700 comprises a processing unit 710 for adjusting a configuration of BWP of at least one or at least one group of secondary cells;

the configuration before adjustment differs from the configuration after adjustment in at least one of the following ways: the number of layers of an MIMO layer adopted when data are transmitted on the BWP, whether a time interval between a control channel sent on the BWP and a data channel scheduled by the control channel is larger than or equal to a threshold value or not, and whether PDCCH search is carried out on the BWP or not; a communication unit 720, configured to communicate with a terminal device on the BWP with the adjusted configuration parameters.

Optionally, in this embodiment of the present application, the communication unit 720 is further configured to:

and sending a downlink dynamic signaling to the terminal equipment, wherein the downlink dynamic signaling is used for indicating the adjustment of the BWP configuration.

Optionally, in this embodiment of the present application, the downlink dynamic signaling is dynamic signaling sent in a DRX activation period.

It should be understood that the network device 700 may be used to implement the corresponding operations implemented by the network device in the method 300, and therefore, for brevity, will not be described in detail here.

Fig. 12 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application. The communication device 800 shown in fig. 12 comprises a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 12, the communication device 800 may also include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, as shown in fig. 12, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 830 may include a transmitter and a receiver, among others. The transceiver 830 may further include one or more antennas.

Optionally, the communication device 800 may specifically be a network device in the embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 800 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 800 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 13 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1000 shown in fig. 13 includes a processor 1010, and the processor 1010 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 13, the chip 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, the chip 1000 may further include an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and specifically may obtain information or data transmitted by the other devices or chips.

Optionally, the chip 1000 may further include an output interface 1040. The processor 1010 may control the output interface 1040 to communicate with other devices or chips, and may particularly output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

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

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

receiving a downlink dynamic signaling;

and according to the indication of the downlink dynamic signaling, the terminal equipment switches the bandwidth part BWP of at least one secondary cell group or a plurality of secondary cells from the first BWP to the second BWP or from the second BWP to the first BWP.
The method of claim 1,

the terminal device does not blindly detect a control channel in a second BWP; and/or the number of MIMO layers used when the second BWP transmits data is different from the number of MIMO layers used when the first BWP transmits data; and/or a time interval between the control channel transmitted on the second BWP and the data channel scheduled by the control channel is greater than or equal to a threshold value and a time interval between the control channel transmitted on the first BWP and the data channel scheduled by the control channel is less than the threshold value.
The method according to claim 1 or 2, wherein the downlink dynamic signaling is detected during Discontinuous Reception (DRX) active period.
The method according to claim 1 or 2, wherein the downlink dynamic signaling is detected before a DRX duration timer is turned on.
The method of claim 4, wherein the downlink dynamic signaling is further used for indicating whether the terminal device needs to start the DRX duration timer.
The method according to any of claims 1 to 5, wherein the downlink dynamic signaling is used to indicate the at least one secondary cell group or a plurality of secondary cells that need to switch BWP.
The method according to any of claims 1 to 5, wherein the downlink dynamic signaling does not indicate the at least one secondary cell group or a plurality of secondary cells that need to switch BWP;

the at least one secondary cell group or the plurality of secondary cells includes a secondary cell configured with the first BWP.
The method according to any of claims 1 to 7, wherein the downlink dynamic signaling is received on a primary cell of the terminal device.
A method of wireless communication, the method comprising:

adjusting a configuration of BWP of at least one or at least one group of secondary cells;

the configuration before adjustment differs from the configuration after adjustment in at least one of the following ways: the number of layers of an MIMO layer adopted when data are transmitted on the BWP, whether a time interval between a control channel sent on the BWP and a data channel scheduled by the control channel is larger than or equal to a threshold value or not, and whether PDCCH search is carried out on the BWP or not;

communicating with a network device on the BWP with the adjusted configuration parameters.
The method of claim 9, wherein the adjusting the configuration of the BWP of the at least one or at least one set of secondary cells comprises:

and adjusting the configuration of the BWP according to the indication of the downlink dynamic signaling.
The method of claim 10, wherein the downlink dynamic signaling is dynamic signaling detected during a Discontinuous Reception (DRX) active period.
The method of claim 10, wherein the downlink dynamic signaling is detected before a DRX on-duration timer is turned on.
The method of claim 12, wherein the downlink dynamic signaling is further used to indicate whether the terminal device needs to start the DRX duration timer.
Method according to any of claims 10 to 13, wherein said downlink dynamic signaling further indicates said at least one or at least one group of secondary cells for which an adjustment of the configuration of BWP is required.
The method according to any of claims 10 to 14, wherein the downlink dynamic signaling is received on a primary cell of the terminal device.
A method of wireless communication, comprising:

and sending downlink dynamic signaling to the terminal device, wherein the downlink dynamic signaling instructs the terminal device to switch the bandwidth part BWP of at least one secondary cell group or a plurality of secondary cells from the first BWP to the second BWP or from the second BWP to the first BWP.
The method of claim 16,

the network device does not transmit a control channel at a second BWP; and/or the number of MIMO layers used when the second BWP transmits data is different from the number of MIMO layers used when the first BWP transmits data; and/or a time interval between the control channel transmitted on the second BWP and the data channel scheduled by the control channel is greater than or equal to a threshold value and a time interval between the control channel transmitted on the first BWP and the data channel scheduled by the control channel is less than the threshold value.
The method according to claim 16 or 17, wherein the downlink dynamic signaling is downlink dynamic signaling sent in a Discontinuous Reception (DRX) active period.
The method according to claim 16 or 17, wherein the downlink dynamic signaling is sent before a DRX duration timer is started.
The method of claim 19, wherein the downlink dynamic signaling is further used for indicating whether the terminal device needs to start the DRX duration timer.
The method according to any of claims 16 to 20, wherein the downlink dynamic signaling is used to indicate the at least one secondary cell group or a plurality of secondary cells that need to switch BWP.
The method according to any of claims 16 to 20, wherein the downlink dynamic signaling does not indicate the at least one secondary cell group or a plurality of secondary cells that need to switch BWP;

the at least one secondary cell group or the plurality of secondary cells includes a secondary cell configured with the second BWP.
The method according to any of claims 16 to 22, wherein the downlink dynamic signaling is sent on a primary cell of the terminal device.
A method of wireless communication, the method comprising:

adjusting a configuration of a bandwidth part, BWP, of at least one or at least one group of secondary cells;

the configuration before adjustment differs from the configuration after adjustment in at least one of the following ways: the number of layers of a multiple-input multiple-output (MIMO) layer adopted when data are transmitted on the BWP, whether a time interval between a control channel sent on the BWP and a data channel scheduled by the control channel is greater than or equal to a threshold value or not, and whether to search a Physical Downlink Control Channel (PDCCH) on the BWP;

communicating with a terminal device on the BWP with the adjusted configuration parameters.
The method of claim 24, further comprising:

and sending a downlink dynamic signaling to the terminal equipment, wherein the downlink dynamic signaling is used for indicating the adjustment of the BWP configuration.
The method of claim 25, wherein the downlink dynamic signaling is dynamic signaling sent during a Discontinuous Reception (DRX) active period.
The method of claim 25, wherein the downlink dynamic signaling is sent before a DRX duration timer is started.
The method of claim 27, wherein the downlink dynamic signaling is further used for indicating whether the terminal device needs to start the DRX duration timer.
The method according to any of claims 25 to 28, wherein said downlink dynamic signaling further indicates said at least one or at least one group of secondary cells for which BWP configuration needs to be adjusted.
The method according to any of claims 25 to 29, wherein the downlink dynamic signaling is sent on a primary cell of the terminal device.
A terminal device, comprising:

a communication unit, configured to receive downlink dynamic signaling, and switch, according to an indication of the downlink dynamic signaling, a bandwidth part BWP of at least one secondary cell group or multiple secondary cells from a first BWP to a second BWP, or from the second BWP to the first BWP.
The apparatus of claim 31,

the communication unit does not blindly detect a control channel at a second BWP; and/or the number of MIMO layers used when the second BWP transmits data is different from the number of MIMO layers used when the first BWP transmits data; and/or a time interval between the control channel transmitted on the second BWP and the data channel scheduled by the control channel is greater than or equal to a threshold value and a time interval between the control channel transmitted on the first BWP and the data channel scheduled by the control channel is less than the threshold value.
The apparatus according to claim 31 or 32, wherein the downlink dynamic signaling is detected during a Discontinuous Reception (DRX) active period.
The apparatus according to claim 31 or 32, wherein the downlink dynamic signaling is detected before a DRX duration timer is turned on.
The apparatus of claim 34, wherein the downlink dynamic signaling is further used for indicating whether the terminal device needs to start the DRX duration timer.
The apparatus of any of claims 31-35, wherein the downlink dynamic signaling indicates the at least one secondary cell group or the plurality of secondary cells that need to switch BWP.
The apparatus of any of claims 31-35, wherein the downlink dynamic signaling does not indicate the at least one secondary cell group or a plurality of secondary cells that need to switch BWP;

the at least one secondary cell group or the plurality of secondary cells includes a secondary cell configured with the second BWP.
The apparatus according to any of claims 31 to 37, wherein the downlink dynamic signaling is received on a primary cell of the terminal device.
A terminal device, comprising:

a processing unit for adjusting a configuration of a bandwidth part, BWP, of at least one or at least one group of secondary cells;

the configuration before adjustment differs from the configuration after adjustment in at least one of the following ways: the number of layers of a multiple-input multiple-output (MIMO) layer adopted when data are transmitted on the BWP, whether a time interval between a control channel sent on the BWP and a data channel scheduled by the control channel is greater than or equal to a threshold value or not, and whether to search a Physical Downlink Control Channel (PDCCH) on the BWP;

a communication unit, configured to communicate with a network device on the BWP with the adjusted configuration parameters.
The device of claim 39, wherein the processing unit is further configured to:

and adjusting the configuration of the BWP according to the indication of the downlink dynamic signaling.
The apparatus of claim 40, wherein the downlink dynamic signaling is dynamic signaling detected during a Discontinuous Reception (DRX) active period.
The apparatus of claim 40, wherein the downlink dynamic signaling is detected before a DRX duration timer is turned on.
The apparatus of claim 42, wherein the downlink dynamic signaling is further used for indicating whether the terminal device needs to start the DRX duration timer.
The apparatus according to any of claims 40-43, wherein the downlink dynamic signaling further indicates the at least one or at least a group of secondary cells that need to adjust the configuration of BWP.
The device according to any of claims 40 to 44, wherein said downlink dynamic signaling is received on a primary cell of said terminal device.
A network device, comprising:

a communication unit, configured to send a downlink dynamic signaling to the terminal device, where the downlink dynamic signaling instructs the terminal device to switch the bandwidth part BWP of the at least one secondary cell group or multiple secondary cells from the first BWP to the second BWP, or from the second BWP to the first BWP.
The apparatus of claim 46,

the communication unit does not transmit a control channel at a second BWP; and/or the number of MIMO layers used when the second BWP transmits data is different from the number of MIMO layers used when the first BWP transmits data; and/or a time interval between the control channel transmitted on the second BWP and the data channel scheduled by the control channel is greater than or equal to a threshold value and a time interval between the control channel transmitted on the first BWP and the data channel scheduled by the control channel is less than the threshold value.
The apparatus according to claim 46 or 47, wherein the downlink dynamic signaling is downlink dynamic signaling sent in a Discontinuous Reception (DRX) active period.
The apparatus according to claim 46 or 47, wherein the downlink dynamic signaling is sent before a DRX duration timer is started.
The apparatus of claim 49, wherein the downlink dynamic signaling is further used for indicating whether the terminal device needs to start the DRX duration timer.
The apparatus of any of claims 46 to 50, wherein the downlink dynamic signaling is used to indicate the at least one secondary cell group or a plurality of secondary cells that need to switch BWP.
The apparatus of any of claims 46 to 50, wherein the downlink dynamic signaling does not indicate the at least one secondary cell group or a plurality of secondary cells that need to switch BWP;

the at least one secondary cell group or the plurality of secondary cells includes a secondary cell configured with the second BWP.
The device according to any of claims 46 to 52, wherein the downlink dynamic signaling is sent on a primary cell of the terminal device.
A network device, comprising:

a processing unit for adjusting a configuration of a bandwidth part, BWP, of at least one or at least one group of secondary cells;

the configuration before adjustment differs from the configuration after adjustment in at least one of the following ways: the number of layers of a multiple-input multiple-output (MIMO) layer adopted when data are transmitted on the BWP, whether a time interval between a control channel sent on the BWP and a data channel scheduled by the control channel is greater than or equal to a threshold value or not, and whether to search a Physical Downlink Control Channel (PDCCH) on the BWP;

a communication unit, configured to communicate with a terminal device on the BWP with the adjusted configuration parameters.
The device of claim 54, wherein the communication unit is further configured to:

and sending a downlink dynamic signaling to the terminal equipment, wherein the downlink dynamic signaling is used for indicating the adjustment of the BWP configuration.
The apparatus of claim 55, wherein the downlink dynamic signaling is dynamic signaling sent during a Discontinuous Reception (DRX) active period.
The apparatus of claim 55, wherein the downlink dynamic signaling is sent before a DRX duration timer is started.
The apparatus of claim 57, wherein the downlink dynamic signaling is further used for indicating whether the terminal device needs to start the DRX duration timer.
The apparatus according to any of claims 55-58, wherein the downlink dynamic signaling further indicates the at least one or at least a group of secondary cells that need to adjust the configuration of BWP.
The device according to any of claims 55 to 59, wherein the downlink dynamic signaling is sent on a primary cell of the terminal device.
A communication device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 30.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 30.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 30.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 30.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 30.