WO2021217513A1

WO2021217513A1 - Method for switching working bandwidth parts, terminal device, and network device

Info

Publication number: WO2021217513A1
Application number: PCT/CN2020/087858
Authority: WO
Inventors: 胡奕; 李海涛
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-11-04
Also published as: CN115245014A

Abstract

A method for switching BWPs, a terminal device, and a network device. The method comprises: a terminal device monitors a physical downlink control channel (PDCCH) indicating BWP switching; parses a BWP switching media access control (MAC) control element (CE) carried in a physical downlink shared channel (PDSCH) indicated by the PDCCH; and determines, according to the parsing result, whether to perform BWP switching. The described method can reduce system consumption and reduce BWP switching failure caused by system resource congestion.

Description

Switching method for working bandwidth part, terminal equipment and network equipment

Technical field

This application relates to the field of communications, and more specifically, to a switching method, terminal equipment, and network equipment of the working bandwidth part.

Background technique

At present, 5G NR introduces the concept of Bandwidth Part (BWP, Bandwidth Part), that is, a part of the continuous bandwidth is divided into the entire large-bandwidth carrier for the terminal to send and receive data. The terminal only needs to perform related operations within this part of the bandwidth of the network configuration, so as to achieve the effect of terminal energy saving.

For each serving cell of the terminal, the network can configure one or more BWPs on the serving cell for the terminal, and the maximum number of BWPs that can be configured currently is 4. At each moment, the terminal can only have one activated downlink (DL, DownLink) BWP and one activated uplink (UL, UpLink) BWP on this serving cell, and the terminal can only send and receive data on the activated BWP. Considering factors such as the diversity of terminal services and the differences in different service characteristics, terminals may have the need to adjust BWP.

In some scenarios, a large number of user equipment (UE, User Equipment) may need to switch BWP. The existing method based on each UE individually sending a BWP handover indication may have a problem of excessive system overhead. In severe cases, some UEs may not be able to switch BWP in time due to system resource congestion, resulting in beam failure and affecting user experience.

Summary of the invention

The embodiments of the present application provide a BWP handover method, terminal equipment, and network equipment, which can reduce the system overhead of BWP handover and reduce the BWP handover failure phenomenon caused by system resource congestion.

An embodiment of the present application proposes a BWP handover method, including:

The terminal equipment monitors the PDCCH indicating the BWP handover;

Analyze the BWP switching media access control (MAC, Medium Access Control) control element (CE, Control Element) carried in the physical downlink shared channel (PDSCH, Physical Downlink Share Channel) indicated by the PDCCH;

According to the analysis result, it is determined whether to perform BWP switching.

The embodiment of the present application also proposes a BWP handover method, including:

The network device sends a PDCCH indicating BWP handover;

The network device carries the BWP switching MAC CE in the PDSCH indicated by the PDCCH, and the BWP switching MAC CE is used to indicate at least one terminal device that performs the BWP switching.

The embodiment of the present application also proposes a terminal device, including:

The monitoring module is used to monitor the physical downlink control channel PDCCH indicating BWP handover;

The parsing module is used to analyze the BWP handover media access control MAC control unit CE carried in the physical downlink shared channel PDSCH indicated by the PDCCH;

The judgment module is used to determine whether to perform BWP switching according to the analysis result.

The embodiment of the application also proposes a network device, including:

The first sending module is used to send a PDCCH indicating BWP switching;

The handover indication module is configured to carry a BWP handover MAC CE in the PDSCH indicated by the PDCCH, and the BWP handover MAC CE is used to indicate at least one terminal device that performs BWP handover.

An embodiment of the present application also proposes a terminal device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and perform BWP switching in any of the above aspects method.

An embodiment of the present application also proposes a network device, including: a processor and a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform BWP switching in any of the above aspects method.

An embodiment of the present application also proposes a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the BWP switching method of any one of the above aspects.

The embodiment of the present application also proposes a computer-readable storage medium for storing a computer program, and the computer program enables the computer to execute the BWP switching method as in any one of the above-mentioned aspects.

The embodiment of the present application also proposes a computer program product, including computer program instructions, and the computer program instructions cause a computer to execute the BWP switching method of any one of the foregoing aspects.

The embodiment of the present application also proposes a computer program, which enables a computer to execute the BWP switching method of any one of the above aspects.

Using the BWP switching method of the embodiment of the present application, the terminal device monitors the PDCCH indicating the BWP switching, and analyzes the BWP switching MAC CE carried in the PDSCH indicated by the PDCCH; and determines whether to perform the BWP switching according to the analysis result. It can be seen that the method proposed in the embodiment of the present application does not need to separately send a PDCCH instructing BWP switching for each terminal device, so it can save system overhead and reduce BWP switching failures caused by system resource congestion.

Description of the drawings

Fig. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

Figure 2 is a schematic diagram of a BWP configuration.

Fig. 3 is a flowchart of an implementation of a method 300 for switching BWP according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a BWP handover MAC CE according to an embodiment of the present application.

Fig. 5 is a schematic diagram of a BWP handover according to the first embodiment of the present application.

Fig. 6 is a schematic diagram of a BWP handover according to the second embodiment of the present application.

Fig. 7 is a schematic diagram of a BWP handover according to the third embodiment of the present application.

FIG. 8 is an implementation flowchart of a BWP handover method 800 according to an embodiment of the present application.

FIG. 9 is a schematic structural diagram of a terminal device 900 according to an embodiment of the present application.

FIG. 10 is a schematic structural diagram of a terminal device 1000 according to an embodiment of the present application.

FIG. 11 is a schematic structural diagram of a network device 1100 according to an embodiment of the present application.

Fig. 12 is a schematic structural diagram of a network device 1200 according to an embodiment of the present application.

FIG. 13 is a schematic structural diagram of a communication device 1300 according to an embodiment of the present application.

FIG. 14 is a schematic structural diagram of a chip 1400 according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

It should be noted that the terms "first" and "second" in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. order. The objects described by "first" and "second" described at the same time may be the same or different.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system , New Radio (NR) system, NR system evolution system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, universal mobile telecommunication system (UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, WiFi), next-generation communications (5th-Generation) , 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (MTC), and vehicle to vehicle (V2V) communication, etc. The embodiments of this application can also be applied to these communications system.

Optionally, the communication system in the embodiments of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to a dual connectivity (DC) scenario, and can also be applied to a standalone (SA) deployment. Network scene.

The embodiment of the application does not limit the applied frequency spectrum. For example, the embodiments of this application can be applied to licensed spectrum or unlicensed spectrum.

The embodiments of this application describe various embodiments in combination with network equipment and terminal equipment. The terminal equipment may also be referred to as User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, and remote. Station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc. The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, and personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, and next-generation communication systems, such as terminal devices in the NR network or Terminal equipment in the public land mobile network (PLMN) network that will evolve in the future.

As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design everyday wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets and smart jewelry for physical sign monitoring.

A network device can be a device used to communicate with mobile devices. The network device can be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, or a device in WCDMA. A base station (NodeB, NB), can also be an Evolutional Node B (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in the NR network Or network equipment in the PLMN network that will evolve in the future.

In the embodiment of the present application, the network equipment provides services for the cell, and the terminal equipment communicates with the network equipment through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network equipment (for example, The cell corresponding to the base station. The cell can belong to a macro base station or a base station corresponding to a small cell. The small cell here can include: Metro cell, Micro cell, Pico Cells, Femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.

Figure 1 exemplarily shows one network device 110 and two terminal devices 120. Optionally, the wireless communication system 100 may include multiple network devices 110, and the coverage of each network device 110 may include other numbers. The terminal device 120 is not limited in this embodiment of the application. The embodiments of the present application can be applied to one terminal device 120 and one network device 110, and can also be applied to one terminal device 120 and another terminal device 120.

Optionally, the wireless communication system 100 may also include other network entities such as a mobility management entity (Mobility Management Entity, MME), access and mobility management function (Access and Mobility Management Function, AMF). This is not limited.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

In order to provide a greater data transmission rate and improve user experience, 5G NR further increases the system bandwidth on the basis of 4G. In 5G NR, for frequency bands below 6GHz, the maximum bandwidth supported by a single carrier is 100MHz; for frequency bands above 6GHz, the maximum bandwidth supported by a single carrier is 400MHz. For a large carrier bandwidth, such as 100HMz, the bandwidth that the terminal needs to use is often very limited. If the terminal is always detected and measured on the entire bandwidth, it will bring great challenges to the power consumption of the terminal, which is not conducive to the power saving of the terminal. Therefore, the concept of BWP is introduced in 5G NR, that is, a part of continuous bandwidth is divided into the entire large-bandwidth carrier for the terminal to send and receive data. The terminal only needs to perform related operations within this part of the bandwidth of the network configuration, so as to achieve the effect of terminal energy saving.

Based on the 5G NR standard, for each serving cell of a terminal, network radio resource control (RRC, Radio Resource Control) can configure one or more BWPs for the terminal on this serving cell, and the maximum number of BWPs that can be configured is 4. At each moment, the terminal can only have one activated DL BWP and one activated UL BWP on this serving cell, and the terminal can only send and receive data on the activated BWP. Considering factors such as the diversity of terminal services and the differences in different service characteristics, terminals may have the need to adjust BWP. For example, when a terminal has a large business volume and wants to obtain a high-rate service, a BWP with a large bandwidth needs to be used for data transmission for this terminal. When the terminal service volume is small, a small bandwidth BWP can be used for data transmission for this terminal. The BWP activated by the terminal on this serving cell can be changed by means of BWP handover.

There are currently 4 BWP handover methods supported in the standard: 1) BWP handover based on PDCCH; 2) BWP handover based on RRC (re)configuration; 3) BWP handover based on timer timeout; 4) Random BWP handover caused by access initialization. Among them, BWP handover based on PDCCH is BWP handover controlled by the network. The network notifies the terminal of the target BWP for handover by sending the PDCCH to the terminal.

At present, in the standardization process of Non-Terrestrial Network (NTN), it is being discussed to reduce the co-frequency interference between adjacent beams through frequency multiplexing for different satellite beams. One way is to combine different satellite beams. The BWP is configured to different satellite beams, and the beam switching is realized by BWP switching. In this way, all UEs under a satellite beam (Beam) use the same activated BWP. When the UE moves from one satellite beam to another satellite beam, BWP handover needs to be performed, as shown in Figure 2. Taking into account the BWP handover mode supported in the current standard, the BWP handover in this networking mode should use the BWP handover mode based on the PDCCH indication.

Communication satellites are divided into low-earth orbit (LEO, Low-Earth Orbit) satellites, medium-Earth (Medium-Earth Orbit, MEO) satellites, geostationary orbit (GEO, Geostationary Earth Orbit) satellites, and highly elliptical orbits according to their orbital heights. (HEO, High Elliptical Orbit) satellites and so on. In a non-GEO scenario, the satellite moves at a high speed relative to the UE, which may cause frequent BWP handover, and there may be a large number of UE handover requirements in a short period of time. Existing methods based on each UE individually sending PDCCH to indicate BWP switching will have the problem of excessive PDCCH overhead. In severe cases, some UEs may not be able to switch BWP in time due to PDCCH resource congestion, resulting in beam failure and affecting user experience . Therefore, how to alleviate the PDCCH overhead caused by the need for a large number of UEs to perform BWP handover in a non-GEO scenario is a problem that needs to be studied.

An embodiment of the present application proposes a BWP handover method. FIG. 3 is a flowchart of an implementation of a BWP handover method 300 according to an embodiment of the present application. The method may optionally be applied to the system shown in FIG. 1, but not Not limited to this. The method includes at least part of the following.

S310: The terminal device monitors the PDCCH indicating the BWP handover;

S320: Parse the BWP handover MAC CE carried in the PDSCH indicated by the PDCCH;

S330: Determine whether to perform BWP switching according to the analysis result.

In some implementation manners, the foregoing S330 includes: if the foregoing BWP switching MAC CE includes the identification of the foregoing terminal device, determining to perform the BWP switching.

Optionally, the identifier of the aforementioned terminal device is a cell radio network temporary identifier (C-RNTI, Cell-Radio Network Temporary Identifier). C-RNTI is a dynamic identification assigned to terminal equipment by the base station.

In some embodiments, the downlink control information (DCI, Downlink Control Information) of the PDCCH indicating the BWP switching includes the identifier of the target BWP of the BWP switching, which may be used to determine that the terminal device performing the BWP switching is switched to the target BWP.

Optionally, the identifier of the aforementioned target BWP includes: the identifier of the target downlink BWP.

Optionally, if it is determined to perform BWP handover, the aforementioned terminal device switches the downlink BWP to the target downlink BWP.

In some implementation manners, the aforementioned terminal device stores BWP configuration parameters, and the BWP configuration parameters include the corresponding relationship between the uplink BWP and the downlink BWP;

If it is determined to perform the BWP handover, the terminal device determines the target uplink BWP corresponding to the target downlink BWP according to the relationship, and switches the uplink BWP of the terminal device to the target uplink BWP.

Optionally, the foregoing method further includes: the terminal device receives a broadcast message or RRC signaling, and the broadcast message or RRC signaling includes the foregoing BWP configuration parameters.

In some embodiments, the above-mentioned BWP configuration parameters further include an uplink BWP list and/or a downlink BWP list; where,

Each uplink BWP in the uplink BWP list does not overlap in the frequency domain;

Each downlink BWP in the downlink BWP list does not overlap in the frequency domain.

The above-mentioned corresponding relationship may adopt a display configuration mode, for example, for each uplink BWP, a downlink BWP associated with it is configured.

Alternatively, the foregoing correspondence relationship may adopt an implicit association manner. For example, the corresponding uplink BWP and downlink BWP in the foregoing correspondence relationship have the same identifier.

In some implementation manners, the DCI of the PDCCH indicating the BWP switching includes the grouping information of the terminal equipment that needs to perform the BWP switching;

After the terminal device monitors the PDCCH indicating the BWP switch, it detects whether the terminal device group information in the DCI of the PDCCH that needs to perform the BWP switch contains the information of the terminal device group where the terminal device is located; if it does, it continues to analyze the PDCCH instruction BWP handover MAC CE transmitted in PDSCH; if not included, it is determined not to perform BWP handover.

In this way, the terminal device can only receive the PDSCH when the terminal device that needs to perform BWP switching is included in the packet in which it is located. Therefore, the operation steps of the terminal device can be reduced, and the effect of energy saving can be further achieved.

The terminal device grouping included in the DCI of the PDCCH indicating the BWP handover may take the following two forms:

The first is to explicitly indicate the identification of the terminal device group (or UE group ID) that needs to perform the BWP handover. In this manner, the UE determines whether there is a UE that needs to perform BWP handover in the UE group where it is located by detecting whether the UE group ID indicated in the DCI includes the UE group ID where it is located.

Second, the DCI of the PDCCH indicating BWP switching includes bit information corresponding to each terminal device group, and each bit information is used to indicate whether the corresponding terminal device group needs to perform BWP switching. For example, a bitmap is used to separately indicate whether each UE grouped by the UE is to perform BWP handover. For example, there are M bits in the DCI of the PDCCH for the BWP switching indication of UE group 1, ..., M respectively. For each UE group, if the BWP switching indication bit corresponding to the UE group is set to 1, it means the UE group There is a UE that needs to perform the BWP handover in the UE group where the UE is located; if the BWP switch indication bit corresponding to the UE group is set to 0, it means that there is no UE that needs to perform the BWP handover in the UE group where the UE is located.

Optionally, the above method further includes: the terminal device receives RRC signaling, and the RRC signaling includes information of the terminal device group in which the terminal device is located.

In some implementation manners, the above-mentioned PDCCH indicating the BWP handover is scrambled by using the first radio network temporary identity (RNTI, Radio Network Tempory Identity);

The terminal device uses the first RNTI to monitor the PDCCH indicating the BWP handover.

Optionally, the terminal device determines the foregoing first RNTI through a system message configuration and/or a predefined manner.

In some embodiments, all terminal devices use the same first RNTI to monitor the PDCCH indicating the BWP handover.

In other embodiments, terminal devices in the same terminal device group use the same first RNTI to monitor the PDCCH indicating BWP switching, and terminal devices in different terminal device groups use different first RNTIs to monitor the PDCCH indicating BWP switching.

Optionally, the terminal device monitors the above-mentioned first PDCCH indicating the BWP handover in the first PDCCH search space.

Wherein, the above-mentioned first PDCCH search space may be a common PDCCH search space.

In some implementation manners, the above method further includes: the terminal device receives a broadcast message, the broadcast message including the configuration information of the first PDCCH search space.

Optionally, the above-mentioned PDSCH includes at least one BWP handover MAC CE.

Optionally, the payload (Payload) of the aforementioned BWP handover MAC CE includes at most N C-RNTIs, where N is the number of terminal devices that need to perform BWP handover.

Correspondingly, the foregoing determination of whether to perform BWP switching according to the analysis result includes:

If the payload of at least one BWP switching MAC and CE included in the PDSCH includes the C-RNTI of the terminal device, it is determined that the terminal device performs BWP switching;

If the payload of any BWP switching MAC and CE included in the PDSCH does not include the C-RNTI of the terminal device, it is determined that the terminal device does not perform BWP switching.

In some embodiments, the above method further includes:

The terminal device sends an acknowledgement (ACK) message on the target uplink BWP after the BWP handover.

The application will be described in detail below with reference to the drawings and specific embodiments.

Example one:

In this embodiment, the network configures a common PDCCH search space through a broadcast message, and the common PDCCH search space is used by all UEs to monitor the PDCCH indicating the BWP handover. After the UE receives the PDCCH indicating the BWP switch, the UE further analyzes the BWP switch MAC and CE payload carried in the PDSCH transmission indicated by the PDCCH, and determines whether the BWP switch needs to be performed according to the analysis result. BWP handover MAC CE can be used to instruct multiple UEs to perform BWP handover.

The specific implementation process is as follows:

Step 1: The UE receives network configuration information, configures BWP related parameters, and PDCCH search space related parameters. specifically:

a) BWP configuration parameters, including UL BWP list and DL BWP list, UL BWP list and downlink DL BWP list have the following characteristics:

The UL BWPs in the UL BWP list do not overlap each other in the frequency domain;

Each DL BWP in the DL BWP list does not overlap each other in the frequency domain;

Determine the one-to-one correspondence between each UL BWP and DL BWP. The use of the association relationship between UL BWP and DL BWP is that when the UE performs BWP handover (for example, handover to the first target BWP) in one link direction, it will also switch the other one at the same time. The BWP in the link direction is switched to the BWP associated with the first target BWP. The method for determining the association relationship between UL BWP and DL BWP can be:

Method 1: Network explicit configuration. For example, for each UL BWP, a DL BWP ID associated with it is configured.

Method 2: The way of implicit association. For example, the UL BWP and the DL BWP with the same BWP ID are associated together.

The BWP configuration parameters can be carried by broadcast messages or UE-specific RRC signaling.

b) PDCCH search space configuration, including the first PDCCH search space configuration, the first PDCCH search space is a common PDCCH search space, which is used by the UE to monitor the PDCCH indicating the BWP handover. The first PDCCH search space is configured through system broadcast messages.

c) Determine a first RNTI, and all UEs use the first RNTI to monitor the PDCCH indicating the BWP handover on the first PDCCH search space. The first RNTI may be configured by the network through a system message or determined in a predefined manner.

Step 2: The UE monitors the PDCCH scrambled with the first RNTI on the first PDCCH search space configured by the network based on the network configuration. If the UE detects a PDCCH scrambled with the first RNTI on the first PDCCH search space, step 3 is further performed. Among them, the target DL BWP ID of the BWP handover and PDSCH resource allocation information are indicated in the PDCCH DCI.

Step 3: Based on the received PDCCH indication, the UE receives the PDSCH on the current DL BWP, and the PDSCH includes at least one BWP handover MAC CE. The payload of the BWP handover MAC CE includes at most N C-RNTIs, where the N C-RNTIs are the C-RNTIs corresponding to the UEs that need to perform the BWP handover indicated by the network. Fig. 4 is a schematic structural diagram of a BWP handover MAC CE according to an embodiment of the present application. As shown in Fig. 4, the BWP handover MAC CE includes at most N C-RNTIs.

The UE further analyzes the BWP handover MAC CE contained in the PDSCH to determine whether it needs to perform BWP handover, specifically:

a) If the C-RNTI of the UE is included in at least one BWP handover MAC CE included in the PDSCH, the UE performs the BWP handover and continues to step 4.

b) If the C-RNTI of the UE is not included in any BWP handover MAC CE included in the PDSCH, the UE does not perform BWP handover.

Step 4: For the UE that is determined to perform the BWP handover, the UE switches the DL BWP to the target DL BWP, and at the same time switches the UL BWP to the target UL BWP associated with the target DL BWP.

Step 5: After the UE completes the BWP handover, it sends an ACK to the network on the target UL BWP.

A schematic diagram of a BWP handover in this embodiment is shown in Fig. 5. The basic assumption of the situation shown in Fig. 5 is: Suppose that there are currently 8 UEs working on BWP1, namely UE1, UE2,..., UE8. The same first RNTI is used to receive the PDCCH indicating the BWP handover. In the initial situation, the downlink BWP where the 8 UEs are located is DL BWP1, and the uplink BWP where the 8 UEs are located is UL BWP1. The network side uses the first RNTI to scramble the PDCCH instructing the BWP switch. The PDCCH instructs to switch the downlink BWP to DL BWP2. All 8 UEs monitor the PDCCH instructing the BWP switch on DL BWP1. Based on the PDCCH indication, all 8 UEs Receive PDCSH on DL BWP1. The BWP switching MAC CE included in the PDCSH includes the identifiers of UE1, UE2, UE3, and UE4, that is, instructing UE1, UE2, UE3, and UE4 to perform BWP switching. According to the instructions of PDCSH, UE1, UE2, UE3, and UE4 switch the downlink BWP to DL BWP2; and, UE1, UE2, UE3, and UE4 switch the uplink BWP to UL BWP2 corresponding to DL BWP2, and send an ACK message on UL BWP2 .

Embodiment two:

In this embodiment, the network configures a common PDCCH search space through a broadcast message, and the common PDCCH search space is used for all UEs to monitor the PDCCH indicating the BWP handover. At the same time, the network configures UE grouping information. When the UE receives the PDCCH indicating the BWP handover, and the UE group that needs to perform the BWP handover indicated in the PDCCH DCI contains the group of the UE, the UE further analyzes the BWP switch MAC CE payload carried in the PDSCH transmission indicated by the PDCCH Determine whether you need to perform BWP switching. BWP handover MAC CE can be used to instruct multiple UEs to perform BWP handover.

The specific implementation process is as follows:

Step 1: The UE receives network configuration information, configures BWP related parameters, PDCCH search space related parameters, and UE grouping information. specifically:

d) UE grouping information, using RRC signaling to indicate the grouping of the UE. When configuring the UE grouping information, the network can configure the UEs in the corresponding characteristic area as the same UE group based on the UE location.

Step 2: The UE monitors the PDCCH scrambled with the first RNTI on the first PDCCH search space configured by the network based on the network configuration. If the UE detects the PDCCH scrambled with the first RNTI on the first PDCCH search space, the target DL BWP ID of the BWP switch indicated in the PDCCH DCI needs to be switched to the UE group ID of the target DL BWP ID and PDSCH resource allocation information. Among them, the specific method for indicating the UE group ID that needs to be switched to the target DL BWP ID in the DCI format can be:

Method 1: Explicitly indicate the UE group ID that needs to perform the BWP handover. In this manner, the UE determines whether there is a UE that needs to perform BWP handover in the UE group where it is located by detecting whether the UE group ID indicated in the DCI includes the UE group ID where it is located.

Method 2: Use a bitmap to indicate whether each UE grouped by the UE is to perform BWP handover. For example, there are M bits in the DCI of the PDCCH for UE group 1, ..., the BWP switching indication of UE group M, for each UE group, if the BWP switching indication bit corresponding to the UE group is set to 1, it can indicate There is a UE that needs to perform BWP handover in the UE group where the UE group is located; if the BWP switch indication bit corresponding to the UE group is set to 0, it may indicate that there is no UE that needs to perform BWP handover in the UE group where the UE is located.

The UE judges based on the above method:

a) If there is a UE that needs to perform BWP handover in the UE group where the UE is located, the UE continues to receive the PDSCH and executes step 3;

b) If there is no UE that needs to perform BWP handover in the UE group where the UE is located, the UE does not perform BWP handover.

Step 3: Based on the received PDCCH indication, the UE receives the PDSCH on the current DL BWP, and the PDSCH includes at least one BWP handover MAC CE. The payload of the BWP handover MAC CE includes at most N C-RNTIs, where the N C-RNTIs are the C-RNTIs corresponding to the UEs that need to perform the BWP handover indicated by the network. The UE further analyzes the BWP handover MAC CE contained in the PDSCH to determine whether it needs to perform BWP handover, specifically:

A schematic diagram of BWP handover in this embodiment is shown in Fig. 6. The basic assumption of the situation shown in Fig. 6 is: Suppose that there are currently 8 UEs working on BWP1, namely UE1, UE2, ..., UE8, and all 8 UEs are working on BWP1. The same first RNTI is used to receive the PDCCH indicating the BWP handover. Among them, UE1 and UE2 correspond to UE group 1, UE3 and UE4 correspond to UE group 2, UE5 and UE6 correspond to UE group 3, and UE7 and UE8 correspond to UE group 4. In the initial situation, the downlink BWP where the 8 UEs are located is DL BWP1, and the uplink BWP where the 8 UEs are located is UL BWP1. The network side uses the first RNTI to scramble the PDCCH instructing the BWP switch. The PDCCH instructs to switch the downlink BWP to DL BWP2, and the UE group that instructs to perform the BWP switch includes UE group 1 and UE group 2. All 8 UEs are on DL BWP1 Listen to the PDCCH indicating the BWP handover. Based on the indication of the PDCCH, the UEs in UE group 1 and UE group 2 (ie UE1, UE2, UE3, and UE4) receive PDCSH on DL BWP1, and other UEs (ie UE5, UE6, UE7) And UE8) determine that it does not perform BWP handover. The BWP switching MAC CE included in the PDCSH includes the identifiers of UE1, UE2, UE3, and UE4, that is, instructing UE1, UE2, UE3, and UE4 to perform BWP switching. According to the instructions of PDCSH, UE1, UE2, UE3, and UE4 switch the downlink BWP to DL BWP2; and, UE1, UE2, UE3, and UE4 switch the uplink BWP to UL BWP2 corresponding to DL BWP2, and send an ACK message on UL BWP2 .

Embodiment three:

The network configures a common PDCCH search space through broadcast messages, and the common PDCCH search space is used by all UEs to monitor the PDCCH indicating the BWP handover. At the same time, the network configures UE grouping information, and different UE groups use different RNTIs to monitor the PDCCH indicating the BWP handover. When the UE receives the PDCCH indicating the BWP handover, the UE further analyzes the payload of the BWP handover MAC CE carried in the PDSCH transmission indicated by the PDCCH to determine whether the BWP handover needs to be performed. BWP handover MAC CE can be used to instruct multiple UEs to perform BWP handover.

The specific implementation process is as follows:

c) UE grouping information, using RRC signaling to indicate the grouping of the UE. When configuring the UE grouping information, the network can configure the UEs in the corresponding characteristic area as the same UE group based on the UE location.

d) Configure a first RNTI for the UE. UEs in the same group are configured with the same first RNTI, and UEs in different groups are configured with different first RNTIs. All UEs use the first RNTI to monitor the PDCCH indicating the BWP handover on the first PDCCH search space.

Step 2: The UE monitors the PDCCH scrambled with the first RNTI on the first PDCCH search space configured by the network based on the network configuration. If the UE detects the PDCCH scrambled with the first RNTI on the first PDCCH search space, then continue to perform step 3. Among them, the target DL BWP ID of the BWP handover and PDSCH resource allocation information are indicated in the PDCCH DCI.

Step 5: After the UE completes the BWP handover, it sends an ACK to the network on the target BWP.

A schematic diagram of a BWP handover in this embodiment is shown in FIG. 7. The basic assumption of the situation shown in FIG. 7 is: assuming that there are currently 8 UEs working on BWP1, UE1, UE2, ..., UE8. Among them, UE1 and UE2 correspond to UE group 1, use RNTI1 to monitor the PDCCH indicating BWP handover; UE3 and UE4 correspond to UE group 2, use RNTI2 to monitor the PDCCH indicating BWP handover; UE5 and UE6 correspond to UE group 3, use RNTI3 to monitor the PDCCH indicating BWP handover PDCCH; UE7 and UE8 correspond to UE group 4 and use RNTI4 to monitor the PDCCH indicating the BWP handover.

In the initial situation, the downlink BWP where the 8 UEs are located is DL BWP1, and the uplink BWP where the 8 UEs are located is UL BWP1. The network side uses RNTI1 to scramble the PDCCH indicating BWP switching, which indicates to switch the downlink BWP to DL BWP2. All 8 UEs monitor the PDCCH indicating BWP switching on DL BWP1, because UE group 1 uses RNTI1 to monitor the PDCCH indicating BWP switching , UEs in UE group 1 (ie, UE1 and UE2) can monitor the PDCCH. Based on the PDCCH indication, UE1 and UE2 receive PDCSH on DL BWP1, and the BWP switching MAC CE included in PDCSH contains the identifiers of UE1 and UE2, that is, instructing UE1 and UE2 to perform BWP switching. According to the PDCSH instruction, UE1 and UE2 switch the downlink BWP to DL BWP2; and, UE1 and UE2 switch the uplink BWP to UL BWP2 corresponding to DL BWP2, and send an ACK message on UL BWP2.

In summary, the method for BWP switching in NTN disclosed in the embodiments of the present application can be applied to a networking mode in which different satellite beams are configured with different BWPs to achieve frequency reuse. Using this method can effectively alleviate the problem of a large number of PDCCH resource overhead caused by a large number of UEs switching BWPs in a non-GEO scenario, and enable the UE to perform BWP switching in a timely manner, thereby maintaining business continuity and improving beam management robustness, Enable users to get a good experience.

The embodiment of the present application also proposes a BWP handover method, which can be applied to network equipment. FIG. 8 is a flowchart of the implementation of a BWP handover method 800 according to an embodiment of the present application. The method may optionally be applied In the system shown in Figure 1, but not limited to this. The method includes at least part of the following content.

S810: The network device sends a PDCCH indicating BWP switching;

S820: The network device carries the BWP switching MAC CE in the PDSCH indicated by the PDCCH, and the BWP switching MAC CE is used to indicate at least one terminal device that performs BWP switching.

In some embodiments, the BWP handover MAC CE contains the identity of the terminal device that performs the BWP handover.

In some embodiments, the DCI of the PDCCH indicating the BWP handover includes an identifier of the target BWP of the BWP handover.

In some embodiments, the identifier of the target BWP includes: the identifier of the target downlink BWP.

In some embodiments, the PDCCH indicating the BWP handover is used to determine that the terminal device that performs the BWP handover will switch the downlink BWP to the target downlink BWP.

In some implementation manners, the PDCCH indicating the BWP handover is also used to determine that the terminal device performing the BWP handover will switch the uplink BWP to the target uplink BWP corresponding to the target downlink BWP.

In some embodiments, it further includes:

The network device sends a broadcast message or RRC signaling, the broadcast message or RRC signaling includes the BWP configuration parameter, and the BWP configuration parameter includes the corresponding relationship between the uplink BWP and the downlink BWP.

In some embodiments, the BWP configuration parameter further includes an uplink BWP list and/or a downlink BWP list;

In some embodiments, the corresponding uplink BWP and downlink BWP in the correspondence relationship have the same identifier.

In some embodiments, the DCI of the PDCCH indicating BWP switching includes terminal device grouping information that needs to perform BWP switching, which is used to instruct terminal devices in the group to parse the BWP switching MAC CE transmitted in the PDSCH indicated by the PDCCH.

In some embodiments, the DCI of the PDCCH indicating BWP switching includes bit information corresponding to each terminal device group, and each bit information is used to indicate whether the corresponding terminal device group needs to perform BWP switching.

In some embodiments, it further includes:

The network device sends RRC signaling to the terminal device, and the RRC signaling includes information about the terminal device group where the terminal device is located.

In some embodiments, the network device uses the first RNTI to scramble the PDCCH indicating the BWP handover.

In some embodiments, the method further includes: the network device configures the first RNTI for the terminal device through a system message.

In some embodiments, the terminal devices in the same terminal device group configured by the network device use the same first RNTI to monitor the PDCCH indicating the BWP handover, and the terminal devices in different terminal device groups use different first RNTIs to monitor the PDCCH. PDCCH indicating BWP handover.

In some embodiments,

The network device sends the first PDCCH indicating the BWP switching in the first PDCCH search space.

In some embodiments,

The first PDCCH search space is a common PDCCH search space.

In some embodiments, it further includes:

The network device sends a broadcast message, and the broadcast message includes configuration information of the first PDCCH search space.

In some embodiments, the PDSCH includes at least one BWP handover MAC CE.

In some embodiments, the payload of the BWP switching MAC CE CE includes at most N C-RNTIs, where N is the number of terminal devices that need to perform BWP switching.

In some embodiments,

If the payload of at least one BWP handover MAC CE included in the PDSCH includes the C-RNTI of the terminal device, it is determined that the terminal device performs BWP handover;

In some embodiments, it further includes:

The network device receives the confirmation message sent by the terminal device on the target uplink BWP after the BWP handover.

An embodiment of the present application also proposes a terminal device. FIG. 9 is a schematic structural diagram of a terminal device 900 according to an embodiment of the present application, including:

The monitoring module 910 is used to monitor the physical downlink control channel PDCCH indicating BWP handover;

The parsing module 920 is configured to analyze the BWP handover media access control MAC control unit CE carried in the physical downlink shared channel PDSCH indicated by the PDCCH;

The judging module 930 is configured to determine whether to perform BWP switching according to the analysis result.

In some implementation manners, the judgment module 930 is configured to determine to perform the BWP handover if the BWP handover MAC CE contains the identity of the terminal device.

In some implementation manners, the downlink control information DCI of the PDCCH indicating the BWP handover includes the identifier of the target BWP of the BWP handover.

In some embodiments, the judgment module 930 is configured to, if it is determined to perform the BWP handover, determine to switch the downlink BWP to the target downlink BWP.

Referring to FIG. 10, in some embodiments, it further includes: a parameter saving module 1040, configured to save BWP configuration parameters, where the BWP configuration parameters include the corresponding relationship between the uplink BWP and the downlink BWP;

The judgment module 930 is configured to, if it is determined to perform the BWP handover, determine the target uplink BWP corresponding to the target downlink BWP according to the corresponding relationship, and determine to switch the uplink BWP to the target uplink BWP.

In some implementation manners, it further includes: a first receiving module 1050, configured to receive a broadcast message or RRC signaling, and the broadcast message or RRC signaling includes the BWP configuration parameter.

In some implementation manners, the DCI of the PDCCH indicating the BWP handover includes grouping information of the terminal device that needs to perform the BWP handover;

After the monitoring module 910 monitors the PDCCH indicating the BWP switch, it detects whether the terminal device group information of the PDCCH that needs to perform the BWP switch in the DCI of the PDCCH contains the information of the terminal device group where the terminal device is located; if it does, the parsing module 920 Analyze the BWP switching MAC CE transmitted in the PDSCH indicated by the PDCCH; if it does not include it, it is determined not to perform the BWP switching.

In some embodiments, it further includes:

The second receiving module 1060 is configured to receive RRC signaling, and the RRC signaling includes information about the terminal device group where the terminal device is located.

In some implementation manners, the PDCCH indicating the BWP handover is scrambled with the first wireless network temporary identification RNTI;

The monitoring module 910 uses the first RNTI to monitor the PDCCH indicating the BWP handover.

In some implementation manners, it further includes: a determining module 1070, configured to determine the first RNTI through a system message configuration and/or a predefined manner.

In some embodiments, the monitoring modules 910 in the same terminal equipment group use the same first RNTI to listen to the PDCCH indicating the BWP handover, and the monitoring modules 910 in different terminal equipment groups use different first RNTIs to listen to the indication BWP. PDCCH for handover.

In some embodiments, the monitoring module 910 monitors the first PDCCH indicating the BWP handover in the first PDCCH search space.

In some embodiments, the first PDCCH search space is a common PDCCH search space.

In some embodiments, it further includes:

The third receiving module 1080 is configured to receive a broadcast message, and the broadcast message includes configuration information of the first PDCCH search space.

In some embodiments, the PDSCH includes at least one BWP handover MAC CE.

In some embodiments, the payload of the BWP handover MAC CE CE includes at most N cell radio network temporary identifiers C-RNTI, where N is the number of terminal devices that need to perform BWP handover.

In some embodiments, the judgment module 930 is used to:

If the payload of at least one BWP handover MAC CE included in the PDSCH includes the C-RNTI of the terminal device, it is determined to perform the BWP handover;

If the payload of any BWP switching MAC and CE included in the PDSCH does not include the C-RNTI of the terminal device, it is determined not to perform the BWP switching.

In some embodiments, it further includes:

The sending module 1090 is used to send a confirmation message on the target uplink BWP after the BWP handover.

It should be understood that the above-mentioned and other operations and/or functions of the modules in the terminal device according to the embodiment of the present application are used to implement the corresponding process of the terminal device in the method 300 of FIG. 3, and are not repeated here for brevity.

An embodiment of the present application also proposes a network device. FIG. 11 is a schematic structural diagram of a network device 1100 according to an embodiment of the present application, including:

The first sending module 1110 is configured to send a PDCCH indicating BWP switching;

The switching instruction module 1120 is configured to carry a BWP switching MAC CE in the PDSCH indicated by the PDCCH, and the BWP switching MAC CE is used to indicate at least one terminal device that performs BWP switching.

As shown in FIG. 12, in some embodiments, it further includes:

The second sending module 1230 is configured to send a broadcast message or RRC signaling. The broadcast message or RRC signaling includes the BWP configuration parameter, and the BWP configuration parameter includes the corresponding relationship between the uplink BWP and the downlink BWP.

In some embodiments, it further includes:

The third sending module 1240 is configured to send RRC signaling to a terminal device, and the RRC signaling includes information about the terminal device group where the terminal device is located.

In some implementation manners, it further includes: a configuration module 1250, configured to configure the first RNTI for the terminal device through a system message.

In some implementation manners, the first sending module 1010 sends the first PDCCH indicating BWP switching in the first PDCCH search space.

In some embodiments, it further includes:

The fourth sending module 1260 is configured to send a broadcast message, and the broadcast message includes the configuration information of the first PDCCH search space.

In some embodiments, the PDSCH includes at least one BWP handover MAC CE.

In some embodiments, if the payload of at least one BWP switching MAC CE included in the PDSCH includes the C-RNTI of the terminal device, it is determined that the terminal device performs BWP switching;

In some embodiments, it further includes:

The confirmation message receiving module 1270 is configured to receive the confirmation message sent by the terminal device on the target uplink BWP after the BWP handover.

It should be understood that the above-mentioned and other operations and/or functions of the modules in the network device according to the embodiment of the present application are used to implement the corresponding process of the network device in the method 800 of FIG.

FIG. 13 is a schematic structural diagram of a communication device 1300 according to an embodiment of the present application. The communication device 1300 shown in FIG. 13 includes a processor 1310, and the processor 1310 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. 13, the communication device 1300 may further include a memory 1320. The processor 1310 can call and run a computer program from the memory 1320 to implement the method in the embodiment of the present application.

The memory 1320 may be a separate device independent of the processor 1310, or may be integrated in the processor 1310.

Optionally, as shown in FIG. 13, the communication device 1300 may further include a transceiver 1330, and the processor 1310 may control the transceiver 1330 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

Among them, the transceiver 1330 may include a transmitter and a receiver. The transceiver 1330 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 1300 may be the first terminal device of the embodiment of the present application, and the communication device 1300 may implement the corresponding process implemented by the first terminal device in each method of the embodiment of the present application. For the sake of brevity, here is No longer.

Optionally, the communication device 1300 may be a communication device of an embodiment of the application, such as a network device or a second terminal device, and the communication device 1300 may implement the corresponding processes implemented by the communication device in each method of the embodiments of the application. For the sake of brevity, I will not repeat them here.

FIG. 14 is a schematic structural diagram of a chip 1400 according to an embodiment of the present application. The chip 1400 shown in FIG. 14 includes a processor 1410, and the processor 1410 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 14, the chip 1400 may further include a memory 1420. The processor 1410 may call and run a computer program from the memory 1420 to implement the method in the embodiment of the present application.

The memory 1420 may be a separate device independent of the processor 1410, or may be integrated in the processor 1410.

Optionally, the chip 1400 may further include an input interface 1430. The processor 1410 can control the input interface 1430 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1400 may further include an output interface 1440. The processor 1410 can control the output interface 1440 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For brevity, details are not described herein again.

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

The aforementioned processors can be general-purpose processors, digital signal processors (digital signal processors, DSP), ready-made programmable gate arrays (field programmable gate arrays, FPGAs), application specific integrated circuits (ASICs), or Other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the aforementioned general-purpose processor may be a microprocessor or any conventional processor.

The above-mentioned memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically accessible Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM).

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instruction may be transmitted from a website, computer, server, or data center through a cable (Such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

It should be understood that in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Covered in the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A method for switching the BWP of the working bandwidth part, including:

The terminal equipment monitors the physical downlink control channel PDCCH indicating the BWP handover;

Parsing the BWP handover media access control MAC control unit CE carried in the physical downlink shared channel PDSCH indicated by the PDCCH;

According to the analysis result, it is determined whether to perform BWP switching.
The method according to claim 1, wherein the determining whether to perform BWP handover according to the analysis result comprises:

If the BWP handover MAC CE contains the identity of the terminal device, it is determined to perform the BWP handover.
The method according to claim 1 or 2, wherein the downlink control information DCI of the PDCCH indicating the BWP handover includes an identifier of the target BWP of the BWP handover.
The method according to claim 3, wherein the identifier of the target BWP comprises: the identifier of the target downlink BWP.
The method according to claim 4, wherein, if it is determined to perform BWP handover, the terminal device switches the downlink BWP to the target downlink BWP.
The method according to claim 5, further comprising: the terminal device storing BWP configuration parameters, the BWP configuration parameters including the corresponding relationship between the uplink BWP and the downlink BWP;

If it is determined to perform the BWP handover, the terminal device determines the target uplink BWP corresponding to the target downlink BWP according to the correspondence relationship, and switches the uplink BWP of the terminal device to the target uplink BWP.
The method according to claim 6, further comprising: the terminal device receives a broadcast message or RRC signaling, and the broadcast message or RRC signaling includes the BWP configuration parameter.
The method according to claim 6 or 7, wherein the BWP configuration parameters further include an uplink BWP list and/or a downlink BWP list;

Each uplink BWP in the uplink BWP list does not overlap in the frequency domain;

Each downlink BWP in the downlink BWP list does not overlap in the frequency domain.
The method according to any one of claims 6 to 8, wherein the corresponding uplink BWP and downlink BWP in the corresponding relationship have the same identifier.
The method according to any one of claims 1 to 9, wherein the DCI of the PDCCH indicating the BWP handover includes grouping information of the terminal equipment that needs to perform the BWP handover;

After the terminal device monitors the PDCCH indicating the BWP switch, it detects whether the terminal device group information in the DCI of the PDCCH that needs to perform the BWP switch includes the information of the terminal device group where the terminal device is located; if it does, continue Perform the step of parsing the BWP switching MAC CE transmitted in the PDSCH indicated by the PDCCH; if it does not include it, it is determined not to perform the BWP switching.
The method according to claim 10, wherein the DCI of the PDCCH indicating the BWP switching includes bit information corresponding to each terminal device grouping, and each of the bit information is used to indicate whether the corresponding terminal device grouping needs to be performed BWP switch.
The method according to claim 10 or 11, further comprising:

The terminal device receives RRC signaling, and the RRC signaling includes information about the terminal device group where the terminal device is located.
The method according to any one of claims 1 to 12, wherein the PDCCH indicating the BWP handover is scrambled by using the first wireless network temporary identification RNTI;

The terminal device uses the first RNTI to monitor the PDCCH indicating the BWP handover.
The method according to claim 13, further comprising: the terminal device determines the first RNTI in a system message configuration and/or a predefined manner.
The method according to claim 13 or 14, wherein the terminal devices in the same terminal device group use the same first RNTI to monitor the PDCCH indicating the BWP handover, and the terminal devices in different terminal device groups use different all The first RNTI monitors the PDCCH indicating the BWP handover.
The method according to any one of claims 1 to 15, wherein:

The terminal device monitors the first PDCCH indicating the BWP handover in the first PDCCH search space.
The method of claim 16, wherein:

The first PDCCH search space is a common PDCCH search space.
The method according to claim 16 or 17, further comprising:

The terminal device receives a broadcast message, and the broadcast message includes configuration information of the first PDCCH search space.
The method according to any one of claims 1 to 18, wherein the PDSCH includes at least one of the BWP handover MAC CE.
The method according to any one of claims 1 to 19, wherein the payload of the BWP handover MAC CE contains at most N cell radio network temporary identifiers C-RNTI, and the N is the number of terminal devices that need to perform the BWP handover. number.
The method according to claim 20, wherein the determining whether to perform BWP handover according to the analysis result comprises:

If the payload of at least one BWP handover MAC CE included in the PDSCH includes the C-RNTI of the terminal device, determine to perform BWP handover;

If the payload of any BWP switching MAC and CE included in the PDSCH does not include the C-RNTI of the terminal device, it is determined not to perform the BWP switching.
The method according to any one of claims 1 to 21, further comprising:

The terminal device sends a confirmation message on the target uplink BWP after the BWP handover.
A BWP handover method, including:

The network device sends a PDCCH indicating BWP handover;

The network device carries a BWP switching MAC CE in the PDSCH indicated by the PDCCH, and the BWP switching MAC CE is used to indicate at least one terminal device that performs BWP switching.
The method according to claim 23, wherein the BWP handover MAC CE includes an identification of the terminal device that performs the BWP handover.
The method according to claim 23 or 24, wherein the DCI of the PDCCH indicating the BWP handover includes an identifier of the target BWP of the BWP handover.
The method according to claim 25, wherein the identifier of the target BWP comprises: the identifier of the target downlink BWP.
The method according to claim 26, wherein the PDCCH indicating the BWP handover is used to determine that the terminal device performing the BWP handover will switch the downlink BWP to the target downlink BWP.
According to the method of claim 27, the PDCCH indicating the BWP switching is further used to determine that the terminal device performing the BWP switching switches the uplink BWP to the target uplink BWP corresponding to the target downlink BWP.
The method of claim 28, further comprising:

The network device sends a broadcast message or RRC signaling, and the broadcast message or RRC signaling includes the BWP configuration parameter, and the BWP configuration parameter includes the corresponding relationship between the uplink BWP and the downlink BWP.
The method according to claim 28 or 29, wherein the BWP configuration parameters further include an uplink BWP list and/or a downlink BWP list;

Each uplink BWP in the uplink BWP list does not overlap in the frequency domain;

Each downlink BWP in the downlink BWP list does not overlap in the frequency domain.
The method according to any one of claims 28 to 30, wherein the corresponding uplink BWP and downlink BWP in the corresponding relationship have the same identifier.
The method according to any one of claims 23 to 31, wherein the DCI of the PDCCH indicating BWP switching includes terminal equipment grouping information that needs to perform BWP switching, and is used to instruct terminal equipment in the group to parse the PDCCH indication. The BWP transmitted in the PDSCH switches to the MAC CE.
The method according to claim 32, wherein the DCI of the PDCCH indicating BWP switching includes bit information corresponding to each terminal device grouping, and each of the bit information is used to indicate whether the corresponding terminal device grouping needs to be performed BWP switch.
The method according to claim 32 or 33, further comprising:

The network device sends RRC signaling to the terminal device, and the RRC signaling includes information about the terminal device group where the terminal device is located.
The method according to any one of claims 23 to 34, wherein the network device uses the first RNTI to scramble the PDCCH indicating the BWP handover.
The method according to claim 35, further comprising: the network device configures the first RNTI for the terminal device through a system message.
The method according to claim 35 or 36, wherein the terminal devices in the same terminal device group configured by the network device use the same first RNTI to monitor the PDCCH indicating the BWP handover, and the terminals in different terminal device groups The device uses a different first RNTI to monitor the PDCCH indicating the BWP handover.
The method according to any one of claims 23 to 37, wherein:

The network device sends the first PDCCH indicating the BWP switching in the first PDCCH search space.
The method of claim 38, wherein:

The first PDCCH search space is a common PDCCH search space.
The method according to claim 38 or 39, further comprising:

The network device sends a broadcast message, and the broadcast message includes configuration information of the first PDCCH search space.
The method according to any one of claims 23-40, wherein the PDSCH includes at least one of the BWP handover MAC CE.
The method according to any one of claims 23 to 41, wherein the payload of the BWP handover MAC CE includes at most N C-RNTIs, and the N is the number of terminal devices that need to perform BWP handover.
The method of claim 42, wherein:

If the payload of at least one BWP handover MAC CE included in the PDSCH includes the C-RNTI of the terminal device, it is determined that the terminal device performs BWP handover;

If the payload of any BWP handover MAC CE included in the PDSCH does not include the C-RNTI of the terminal device, it is determined that the terminal device does not perform BWP handover.
The method according to any one of claims 23 to 43, further comprising:

The network device receives the confirmation message sent by the terminal device on the target uplink BWP after the BWP handover.
A terminal device, including:

The monitoring module is used to monitor the physical downlink control channel PDCCH indicating BWP handover;

The parsing module is used to analyze the BWP handover media access control MAC control unit CE carried in the physical downlink shared channel PDSCH indicated by the PDCCH;

The judgment module is used to determine whether to perform BWP switching according to the analysis result.
The terminal device of claim 45, wherein the judgment module is configured to determine to perform the BWP switch if the BWP switching MAC CE contains the identification of the terminal device.
The terminal device according to claim 45 or 46, wherein the downlink control information DCI of the PDCCH indicating the BWP handover includes an identifier of the target BWP of the BWP handover.
The terminal device according to claim 47, wherein the identifier of the target BWP comprises: the identifier of the target downlink BWP.
The terminal device according to claim 48, wherein the judgment module is configured to determine to switch the downlink BWP to the target downlink BWP if it is determined to perform the BWP handover.
The terminal device according to claim 49, further comprising: a parameter saving module, configured to save BWP configuration parameters, the BWP configuration parameters including the corresponding relationship between the uplink BWP and the downlink BWP;

The judgment module is configured to, if it is determined to perform BWP switching, determine the target uplink BWP corresponding to the target downlink BWP according to the correspondence relationship, and determine to switch the uplink BWP to the target uplink BWP.
The terminal device according to claim 50, further comprising: a first receiving module, configured to receive a broadcast message or RRC signaling, and the broadcast message or RRC signaling includes the BWP configuration parameter.
The terminal device according to claim 50 or 51, wherein the BWP configuration parameters further include an uplink BWP list and/or a downlink BWP list;

Each uplink BWP in the uplink BWP list does not overlap in the frequency domain;

Each downlink BWP in the downlink BWP list does not overlap in the frequency domain.
The terminal device according to any one of claims 50 to 52, wherein the corresponding uplink BWP and downlink BWP in the corresponding relationship have the same identifier.
The terminal device according to any one of claims 45 to 53, wherein the DCI of the PDCCH indicating BWP switching includes grouping information of the terminal device that needs to perform BWP switching;

After the monitoring module monitors the PDCCH indicating the BWP switch, it detects whether the terminal device group information in the DCI of the PDCCH that needs to perform the BWP switch contains the information of the terminal device group where the terminal device is located; if it does, then The analysis module analyzes the BWP switching MAC CE transmitted in the PDSCH indicated by the PDCCH; if it does not include it, it determines not to perform the BWP switching.
The terminal device according to claim 54, wherein the DCI of the PDCCH indicating BWP switching includes bit information corresponding to each terminal device group, and each of the bit information is used to indicate whether the corresponding terminal device group requires Perform BWP switching.
The terminal device according to claim 54 or 55, further comprising:

The second receiving module is configured to receive RRC signaling, where the RRC signaling includes information about the terminal equipment group where the terminal equipment is located.
The terminal device according to any one of claims 45 to 56, wherein the PDCCH indicating the BWP handover is scrambled by using the first wireless network temporary identification RNTI;

The monitoring module uses the first RNTI to monitor the PDCCH indicating the BWP handover.
The terminal device according to claim 57, further comprising: a determining module, configured to determine the first RNTI through a system message configuration and/or a predefined manner.
The terminal equipment according to claim 57 or 58, wherein the monitoring modules in the same terminal equipment group use the same first RNTI to listen to the PDCCH indicating the BWP handover, and the monitoring modules in different terminal equipment groups use different The first RNTI monitors the PDCCH indicating the BWP handover.
The terminal device according to any one of claims 45 to 59, wherein:

The monitoring module monitors the first PDCCH indicating the BWP handover in the first PDCCH search space.
The terminal device according to claim 60, wherein:

The first PDCCH search space is a common PDCCH search space.
The terminal device according to claim 60 or 61, further comprising:

The third receiving module is configured to receive a broadcast message, the broadcast message including the configuration information of the first PDCCH search space.
The terminal device according to any one of claims 45 to 62, wherein the PDSCH includes at least one of the BWP handover MAC CE.
The terminal device according to any one of claims 45 to 63, wherein the payload of the BWP handover MAC CE includes at most N cell radio network temporary identifiers C-RNTI, and the N is the number of the terminal equipment that needs to perform the BWP handover. Number.
The terminal device according to claim 64, wherein the judgment module is configured to:

If the payload of at least one BWP handover MAC CE included in the PDSCH includes the C-RNTI of the terminal device, determine to perform BWP handover;

If the payload of any BWP switching MAC and CE included in the PDSCH does not include the C-RNTI of the terminal device, it is determined not to perform the BWP switching.
The terminal device according to any one of claims 45 to 65, further comprising:

The sending module is used to send the confirmation message on the target uplink BWP after the BWP handover.
A network device including:

The first sending module is used to send a PDCCH indicating BWP switching;

The handover indication module is configured to carry a BWP handover MAC CE in the PDSCH indicated by the PDCCH, and the BWP handover MAC CE is used to indicate at least one terminal device that performs BWP handover.
The network device according to claim 67, wherein the BWP handover MAC CE includes an identification of the terminal device that performs the BWP handover.
The network device according to claim 67 or 68, wherein the DCI of the PDCCH indicating the BWP handover includes an identifier of the target BWP of the BWP handover.
The network device according to claim 69, wherein the identifier of the target BWP comprises: the identifier of the target downlink BWP.
The network device according to claim 70, wherein the PDCCH indicating the BWP handover is used to determine that the terminal device performing the BWP handover will switch the downlink BWP to the target downlink BWP.
The network device according to claim 71, wherein the PDCCH indicating the BWP switching is further used to determine that the terminal device performing the BWP switching switches the uplink BWP to the target uplink BWP corresponding to the target downlink BWP.
The network device according to claim 72, further comprising:

The second sending module is configured to send a broadcast message or RRC signaling, where the broadcast message or RRC signaling includes the BWP configuration parameter, and the BWP configuration parameter includes the corresponding relationship between the uplink BWP and the downlink BWP.
The network device according to claim 72 or 73, wherein the BWP configuration parameters further include an uplink BWP list and/or a downlink BWP list;

Each uplink BWP in the uplink BWP list does not overlap in the frequency domain;

Each downlink BWP in the downlink BWP list does not overlap in the frequency domain.
The network device according to any one of claims 72 to 74, wherein the corresponding uplink BWP and downlink BWP in the corresponding relationship have the same identifier.
The network device according to any one of claims 67 to 75, wherein the DCI of the PDCCH indicating BWP switching includes terminal device grouping information that needs to perform BWP switching, and is used to instruct terminal devices in the group to parse the PDCCH indication The BWP transmitted in the PDSCH switches to the MAC CE.
The network device according to claim 76, wherein the DCI of the PDCCH indicating the BWP switching includes bit information corresponding to each terminal device group, and each of the bit information is used to indicate whether the corresponding terminal device group requires Perform BWP switching.
The network device according to claim 76 or 77, further comprising:

The third sending module is configured to send RRC signaling to a terminal device, where the RRC signaling includes information about the terminal device group where the terminal device is located.
The network device according to any one of claims 67 to 78, wherein the network device uses the first RNTI to scramble the PDCCH indicating the BWP handover.
The network device according to claim 79, further comprising: a configuration module, configured to configure the first RNTI for the terminal device through a system message.
The network device according to claim 79 or 80, wherein the terminal devices in the same terminal device group are configured to use the same first RNTI to monitor the PDCCH indicating the BWP handover, and the terminal devices in the different terminal device groups The terminal device uses the different first RNTI to monitor the PDCCH indicating the BWP handover.
The network device according to any one of claims 67 to 81, wherein:

The first sending module sends the first PDCCH indicating the BWP switching in the first PDCCH search space.
The network device according to claim 82, wherein:

The first PDCCH search space is a common PDCCH search space.
The network device according to claim 82 or 83, further comprising:

The fourth sending module is configured to send a broadcast message, and the broadcast message includes configuration information of the first PDCCH search space.
The network device according to any one of claims 67 to 84, wherein the PDSCH includes at least one of the BWP handover MAC CE.
The network device according to any one of claims 67 to 85, wherein the payload of the BWP handover MAC CE contains at most N C-RNTIs, and the N is the number of terminal devices that need to perform BWP handover.
The network device according to claim 86, wherein:

If the payload of at least one BWP handover MAC CE included in the PDSCH includes the C-RNTI of the terminal device, it is determined that the terminal device performs BWP handover;

If the payload of any BWP handover MAC CE included in the PDSCH does not include the C-RNTI of the terminal device, it is determined that the terminal device does not perform BWP handover.
The network device according to any one of claims 67 to 87, further comprising:

The confirmation message receiving module is used to receive the confirmation message sent by the terminal device on the target uplink BWP after the BWP handover.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 22 Methods.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 23 to 44 Methods.
A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 22.
A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 23 to 44.
A computer-readable storage medium for storing a computer program that enables a computer to execute the method according to any one of claims 1 to 22.
A computer-readable storage medium for storing a computer program that enables a computer to execute the method according to any one of claims 23 to 44.
A computer program product comprising computer program instructions that cause a computer to execute the method according to any one of claims 1 to 22.
A computer program product comprising computer program instructions that cause a computer to execute the method according to any one of claims 23 to 44.
A computer program that causes a computer to execute the method according to any one of claims 1 to 22.
A computer program that causes a computer to execute the method according to any one of claims 23 to 44.