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WO2021003624A1 - Bwp切换方法和终端设备 - Google Patents

Bwp切换方法和终端设备 Download PDF

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Publication number
WO2021003624A1
WO2021003624A1 PCT/CN2019/094950 CN2019094950W WO2021003624A1 WO 2021003624 A1 WO2021003624 A1 WO 2021003624A1 CN 2019094950 W CN2019094950 W CN 2019094950W WO 2021003624 A1 WO2021003624 A1 WO 2021003624A1
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WO
WIPO (PCT)
Prior art keywords
bwp
downlink
terminal device
uplink
downlink bwp
Prior art date
Application number
PCT/CN2019/094950
Other languages
English (en)
French (fr)
Inventor
徐伟杰
卢前溪
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2019/094950 priority Critical patent/WO2021003624A1/zh
Priority to CN201980092923.5A priority patent/CN113475141A/zh
Priority to EP19936802.8A priority patent/EP3979742A4/en
Publication of WO2021003624A1 publication Critical patent/WO2021003624A1/zh
Priority to US17/564,573 priority patent/US12101802B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • H04B7/18541—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for handover of resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/2041—Spot beam multiple access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the embodiments of the present application relate to the communication field, and more specifically, to a BWP handover method and terminal equipment.
  • the New Radio (NR) system defines deployment scenarios for non-terrestrial networks (NTN) including satellite networks.
  • NTN non-terrestrial networks
  • a satellite can cover the ground with multiple beams to provide communication services for ground users.
  • NR-based satellite communication can adopt a multi-color deployment mode, that is, different frequencies are used on adjacent beams of a satellite to avoid interference between adjacent beams.
  • the dwell time in a beam may be only a few seconds to tens of seconds, so it faces fast beam switching.
  • the switching of satellite beams leads to the bandwidth of the terminal equipment (Band Width Part (BWP) frequent passive handover affects satellite communication performance. How to optimize the impact of frequent BWP handover on satellite communication performance is an urgent problem to be solved.
  • BWP Band Width Part
  • the embodiments of the application provide a BWP switching method and terminal equipment.
  • the terminal equipment can implement autonomous downlink BWP and/or uplink BWP switching based on the measurement of downlink reference signals, thereby solving the problem of rapid switching of satellite beams in satellite communications. The impact of frequent BWP handovers on satellite communication performance.
  • a BWP handover method which includes:
  • the terminal equipment measures multiple downlink reference signals corresponding to multiple downlink BWPs
  • the terminal device determines whether to switch from the first downlink BWP to the second downlink BWP according to the measurement results of the multiple downlink reference signals corresponding to the multiple downlink BWPs, where the first downlink BWP is an activated BWP, and the The first downlink BWP and the second downlink BWP belong to the multiple downlink BWPs.
  • a terminal device which is used to execute the method in the first aspect or its implementation manners.
  • the terminal device includes a functional module for executing the method in the foregoing first aspect or each implementation manner thereof.
  • 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 to execute the method in the above-mentioned first aspect or each of its implementation modes.
  • a chip is provided, which is used to implement the method in the first aspect or its implementation manners.
  • the chip includes a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the method in the first aspect or its implementation manners.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the method in the first aspect or its implementation manners.
  • a computer program product including computer program instructions, which cause a computer to execute the method in the first aspect or its implementation manners.
  • a computer program which when running on a computer, causes the computer to execute the method in the first aspect or its implementation manners.
  • the terminal device can determine whether to switch from the currently activated first downlink BWP to the second downlink BWP according to the measurement results of multiple downlink reference signals corresponding to multiple downlink BWPs, thereby realizing autonomous downlink BWP switching , Solve the influence of BWP fast and frequent switching on satellite communication performance caused by the fast switching of satellite beams in satellite communication.
  • Fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • Figure 2 is a schematic diagram of an implementation of multi-color deployment.
  • Fig. 3 is a schematic flowchart of a BWP handover method provided according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a signal intensity change corresponding to the BWP of a beam caused by satellite movement according to an embodiment of the present application.
  • Fig. 5 is a schematic diagram of a first duration provided by an embodiment of the present application.
  • Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • Fig. 7 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • Fig. 8 is a schematic block diagram of a chip provided according to an embodiment of the present application.
  • Fig. 9 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • New Radio, NR evolution system of NR system
  • LTE LTE-based access to unlicensed spectrum
  • LTE-U Universal Mobile Telecommunication System
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • WiFi Wireless Fidelity
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • 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.
  • CA Carrier Aggregation
  • DC dual connectivity
  • SA standalone
  • the embodiment of this application does not limit the applied spectrum.
  • the embodiments of this application can be applied to licensed spectrum or unlicensed spectrum.
  • the 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 called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.
  • terminal equipment may also be called User Equipment (UE), access terminal, subscriber unit, user station, mobile station, mobile station, and remote Station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • UE User Equipment
  • access terminal subscriber unit
  • subscriber unit user station
  • mobile station mobile station
  • mobile station mobile station
  • remote Station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • user agent or user device etc.
  • the terminal equipment 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 a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, 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 future evolved Public Land Mobile Network (PLMN) network.
  • STAION, ST station
  • WLAN Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for the application of wearable technology to intelligently design daily 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 hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • 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 various smart bracelets and smart jewelry for physical sign monitoring.
  • a network device can be a device used to communicate with a mobile device.
  • the network device can be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, or a device in WCDMA
  • AP access point
  • BTS 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 future evolution of the PLMN network.
  • eNB Evolutional Node B
  • gNB network device
  • 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.
  • 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.
  • the system bandwidth and terminal bandwidth may reach a bandwidth of hundreds of MHz or even several GHz to support high-speed mobile data transmission, but in actual data transmission, such a large bandwidth is not always required.
  • the terminal in working scenarios that only need to support low data rate transmission (such as WeChat chat), the terminal only needs to use a small working bandwidth, for example, a bandwidth of 10 MHz is sufficient.
  • 5G introduces the concept of BWP.
  • the BWP may be a part of the system bandwidth, for example, the system bandwidth is 100 MHz, and the terminal may use a bandwidth less than 100 MHz, for example, the bandwidth of 20 or 50 MHz for data transmission within the system bandwidth.
  • NR supports the configuration of up to 4 BWPs to the terminal at the same time, and different BWPs can have different bandwidth sizes, different frequency positions, and different subcarrier intervals.
  • the network can enable the terminal to switch between multiple BWPs according to the service requirements of the terminal. For example, a larger bandwidth BWP is used for higher service rate transmission, and a smaller bandwidth BWP is used for lower service data rate transmission.
  • the NR system supports the following two BWP switching methods:
  • the first method is to switch the BWP of the terminal through the Downlink Control Information (DCI) method.
  • the network carries the BWP indicator field (Bandwidth part indicator) in the DCI for data scheduling of the terminal, and the BWP of the terminal needs to be switched At this time, the network indicates a BWP different from the BWP where the terminal is currently located in the BWP indication field in the DCI sent to the terminal, and the terminal performs BWP handover after receiving the BWP.
  • DCI Downlink Control Information
  • the second method is to control the BWP switching based on the timer (timer). Every time the terminal receives a Physical Downlink Control Channel (PDCCH) scheduling in the current BWP, the timer is reset, and the timing continues thereafter. When the timer times out, the terminal switches to the default (default) BWP.
  • timer Every time the terminal receives a Physical Downlink Control Channel (PDCCH) scheduling in the current BWP, the timer is reset, and the timing continues thereafter.
  • PDCCH Physical Downlink Control Channel
  • Multi-color deployment is a typical method of communication satellite deployment. Multi-color deployment can effectively avoid interference between two adjacent beams.
  • satellite communication based on the NR system if multi-color deployment is adopted, may bring some new problems.
  • the residence time of the terminal device in a beam may be only a few seconds to tens of seconds. Therefore, the terminal device faces fast beam switching; on the other hand, multi-color In the case of deployment, adjacent beams use different frequencies, so beam switching will also cause frequency switching.
  • the switching of the operating frequency may mean that the BWP of the terminal needs to be switched.
  • the terminal may switch from the BWP corresponding to the working frequency of the original beam to another BWP corresponding to the working frequency of the new beam.
  • the terminal will be subsequently used at operating frequencies F1 and F4, respectively.
  • F1 assumes Corresponding to BWP2, and the terminal subsequently needs to switch from BWP1 of F4 to BWP2 of F1, and switch from BWP2 of F1 to BWP1 of F4. It can be seen that the switching of the satellite beam causes frequent passive switching of the BWP of the terminal.
  • the timer-based approach cannot be applied to scenarios where the switching of satellite beams causes frequent passive switching of BWP.
  • the beam switching time cannot be guaranteed to be consistent with the timer timeout time; second, the BWP that the beam switching expects to switch to is not necessarily the default BWP.
  • the BWP switching method based on DCI cannot be applied to scenarios where the switching of satellite beams causes frequent passive switching of BWP.
  • the switching of the beam causes the terminals serving in the beam to perform BWP switching. No matter whether the terminal has data transmission during the beam switching, the DCI of the BWP switching needs to be sent. This will cause the DCI overhead problem. When there are many users, it may be possible Circumstances leading to insufficient DCI;
  • the terminal needs to report the measurement result, and the network judges whether the beam changes and whether to perform the BWP handover according to the change of the terminal measurement result.
  • the DCI of BWP handover is sent to the terminal.
  • the terminal cannot report the measurement result in time and correctly due to the rapid weakening of the original beam signal, the network cannot correctly judge whether to perform BWP handover, and then Lead to the delay of BWP handover, affecting the normal communication of the terminal.
  • this application proposes a solution for terminal equipment to autonomously switch the downlink BWP and/or the uplink BWP based on the measurement of the downlink reference signal, which meets the demand for fast switching of the BWP caused by the fast switching of the satellite beam in satellite communication, which can be effective
  • the DCI overhead on the network side is saved, and since the handover process based on terminal reporting is reduced, more timely BWP handover can be guaranteed.
  • FIG. 3 is a schematic flowchart of a BWP handover method 200 according to an embodiment of the present application. As shown in FIG. 3, the method 200 may include the following content:
  • S210 The terminal device measures multiple downlink reference signals corresponding to multiple downlink BWPs.
  • the terminal device determines whether to switch from the first downlink BWP to the second downlink BWP according to the measurement results of the multiple downlink reference signals corresponding to the multiple downlink BWPs, where the first downlink BWP is an activated BWP , The first downlink BWP and the second downlink BWP belong to the multiple downlink BWPs.
  • the multiple downlink BWPs may respectively correspond to a frequency in a multi-color deployment scenario in satellite communication.
  • satellite communication in a multi-color deployment scenario uses 4 different frequencies to cover the ground.
  • the 4 frequencies are respectively denoted as F1, F2, F3, and F4, and F1 corresponds to BWP1, F2 corresponds to BWP2, and F3 corresponds to BWP3, F4.
  • F1, F2, F3, and F4 respectively denoted as F1, F2 corresponds to BWP2
  • F3 corresponds to BWP3, F4.
  • BWP4 Corresponds to BWP4.
  • the multiple downlink BWPs may be configured by network equipment, and the number of the multiple downlink BWPs is less than or equal to 4, and each downlink BWP is located in a carrier bandwidth corresponding to a satellite beam.
  • the multiple downlink reference signals corresponding to the multiple downlink BWPs include synchronization signal blocks or channel state information reference signals (Channel State Information Reference Signal, CSI-RS).
  • the synchronization signal block may be a synchronization signal block (Synchronization Signal Block, SSB) or a physical layer broadcast channel (Physical Broadcast Channel, PBCH) signal block.
  • SSB Synchronization Signal Block
  • PBCH Physical Broadcast Channel
  • each of the multiple downlink BWPs corresponds to a downlink reference signal. That is, the multiple downlink BWPs have a one-to-one correspondence with the multiple downlink reference signals.
  • the correspondence between the multiple downlink BWPs and the multiple downlink reference signals may also be many-to-one, which is not limited in the embodiment of the present application.
  • the multiple downlink reference signals corresponding to the multiple downlink BWPs are preset, or the multiple downlink reference signals corresponding to the multiple downlink BWPs are pre-configured by the network device through signaling.
  • the network device sends first configuration information to the terminal device through signaling in advance, where the first configuration information is used to configure multiple downlink reference signals corresponding to the multiple downlink BWPs.
  • the measurement result includes but is not limited to at least one of the following:
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • RSRQ Reference Signal Receiving Quality
  • CQI Channel Quality Indicator
  • step S210 may specifically be:
  • the terminal device periodically measures multiple downlink reference signals corresponding to the multiple downlink BWPs.
  • the measurement periods of the multiple downlink reference signals corresponding to the multiple downlink BWPs are preset, or the measurement periods of the multiple downlink reference signals corresponding to the multiple downlink BWPs are predetermined by the network device through signaling. Configured.
  • the network device sends second configuration information to the terminal device through signaling in advance, and the second configuration information is used to configure the measurement periods of multiple downlink reference signals corresponding to the multiple downlink BWPs.
  • the terminal equipment can evaluate the change trend of each downlink BWP signal strength based on the periodic measurement of the downlink reference signals corresponding to the multiple downlink BWPs corresponding to the multiple satellite beams, and then judge the switching trend of the satellite beams. As shown in FIG. 4, as the satellite moves rapidly, the RSRP signal strength corresponding to the downlink BWP of beam 1 is gradually decreasing, and the RSRP signal strength corresponding to the downlink BWP of beam 2 is gradually increasing. Therefore, the terminal device can switch the downlink BWP based on the relative relationship between the measurement results of multiple downlink BWPs.
  • the measurement result of the downlink reference signal corresponding to the second downlink BWP is the largest among the measurement results of the multiple downlink reference signals corresponding to the multiple downlink BWPs.
  • step S220 may specifically be:
  • the terminal device switches from the first downlink BWP to the second downlink BWP.
  • the terminal device does not switch from the first downlink BWP to the The second downstream BWP.
  • the multiple downlink BWPs include a downlink BWP1, a downlink BWP2, a downlink BWP3, and a downlink BWP4, the downlink BWP1 is the active BWP, the measurement result of the downlink reference signal corresponding to the downlink BWP1 is A, and the downlink reference signal corresponding to the downlink BWP2
  • the measurement result of is B
  • the measurement result of the downlink reference signal corresponding to the downlink BWP3 is C
  • the measurement result of the downlink reference signal corresponding to the downlink BWP4 is D.
  • the terminal device determines to switch from downstream BWP1 to downstream BWP2; if C is greater than A, the terminal device determines to switch from downstream BWP1 to downstream BWP3; if D is greater than A, the terminal device determines to switch from downstream BWP1 to downstream BWP4 . If both B and C are greater than A, and C is greater than B, the terminal device determines to switch from downlink BWP1 to downlink BWP3.
  • step S220 may specifically be:
  • the terminal device switches from the first downlink BWP To the second downstream BWP.
  • the terminal device does not follow the second downlink BWP.
  • a downlink BWP is switched to the second downlink BWP.
  • the difference between the measurement result of the downlink reference signal corresponding to the second downlink BWP and the measurement result of the downlink reference signal corresponding to the first downlink BWP can be understood as the downlink corresponding to the second downlink BWP
  • the first threshold is preset, or the first threshold is pre-configured by the network device through signaling.
  • the network device sends third configuration information to the terminal device through signaling in advance, and the third configuration information is used to configure the first threshold.
  • the multiple downlink BWPs include a downlink BWP1, a downlink BWP2, a downlink BWP3, and a downlink BWP4, the downlink BWP1 is the active BWP, the measurement result of the downlink reference signal corresponding to the downlink BWP1 is A, and the downlink reference signal corresponding to the downlink BWP2
  • the measurement result of is B
  • the measurement result of the downlink reference signal corresponding to the downlink BWP3 is C
  • the measurement result of the downlink reference signal corresponding to the downlink BWP4 is D.
  • the terminal device determines to switch from downlink BWP1 to downlink BWP2; if CA>the first threshold, the terminal device determines to switch from downlink BWP1 to downlink BWP3; if DA>the first threshold, the terminal device determines from The downstream BWP1 is switched to the downstream BWP4. If B-A>first threshold, C-A>first threshold, and C>B, the terminal device determines to switch from downlink BWP1 to downlink BWP3.
  • the change of the satellite beam will not only cause the change of the downlink frequency and the change of the downlink BWP, but also cause the change of the uplink frequency and the switching of the uplink BWP. Therefore, in order to ensure that both the uplink BWP and the downlink BWP are correctly switched, the uplink BWP of the satellite beam can be associated with the downlink BWP. For example, in the Frequency Division Duplexing band, the uplink BWP and the downlink BWP can be associated. When the downlink BWP of the satellite is switched, the corresponding uplink BWP is also switched.
  • the terminal device may also determine whether to perform uplink BWP switching.
  • the terminal device may determine to switch from the uplink BWP corresponding to the first downlink BWP to the second downlink BWP according to the third correspondence relationship.
  • the third correspondence relationship may be as shown in Table 1 below.
  • the third correspondence is preset, or the third correspondence is pre-configured by the network device through signaling.
  • the network device sends fourth configuration information to the terminal device through signaling in advance, and the fourth configuration information is used to configure the third correspondence.
  • the network device since the terminal device autonomously performs the switching of the uplink BWP and/or the downlink BWP, the network device is not aware of the BWP switching status of the terminal device. In order to ensure the correct communication between the network device and the terminal device, the terminal device needs to timely The situation of BWP handover is reported to the network device.
  • the terminal device determines to switch from the first downlink BWP to the second downlink BWP, and before the terminal device switches from the first downlink BWP to the second downlink BWP , The terminal device sends a first uplink signal to the network device to indicate the information of the second downlink BWP, and/or, indicate the information of the uplink BWP corresponding to the second downlink BWP.
  • the first uplink signal includes index information of the second downlink BWP. That is, the terminal device can explicitly instruct the terminal device to switch from the first downlink BWP to the second downlink BWP through the index information of the second downlink BWP. Further, since the third corresponding relationship exists between the downlink BWP and the uplink BWP, the terminal device may also explicitly instruct the terminal device to select the uplink BWP corresponding to the first downlink BWP through the index information of the second downlink BWP. Switch to the uplink BWP corresponding to the second downlink BWP.
  • the first uplink signal includes index information of the uplink BWP corresponding to the second downlink BWP. That is, the terminal device can explicitly instruct the terminal device to switch from the uplink BWP corresponding to the first downlink BWP to the uplink BWP corresponding to the second downlink BWP through the index information of the uplink BWP corresponding to the second downlink BWP.
  • the terminal device sends the first uplink signal on the uplink BWP corresponding to the first downlink BWP according to the first correspondence, where the first uplink signal corresponds to index information of the second downlink BWP, and
  • the first correspondence is a correspondence between a plurality of uplink information and indexes of the plurality of downlink BWPs, and the plurality of uplink information includes the first uplink signal.
  • the terminal device can implicitly instruct the terminal device to switch from the first downlink BWP to the second downlink BWP by sending the first uplink signal. Further, since the third corresponding relationship exists between the downlink BWP and the uplink BWP, the terminal device may also implicitly instruct the terminal device to switch from the uplink BWP corresponding to the first downlink BWP through the transmission of the first uplink signal To the uplink BWP corresponding to the second downlink BWP.
  • the first corresponding relationship may be as shown in Table 2 or Table 3 below.
  • Uplink signal index Uplink signal a Uplink signal b Uplink signal c Downstream BWP index Downlink BWP a Downlink BWP b Downlink BWP c
  • the first correspondence is preset, or the first correspondence is pre-configured by the network device through signaling.
  • the network device sends fifth configuration information to the terminal device through signaling in advance, and the fifth configuration information is used to configure the first correspondence.
  • the first uplink signal is one of the following:
  • Random access preamble preamble
  • dedicated scheduling request Scheduling Request, SR
  • dedicated sounding reference signal Sounding Reference Signal, SRS
  • media access control control element Media Access Control Control Element, MAC CE
  • Radio Resource Control Radio Resource Control
  • the terminal device receives the configuration information of the first uplink signal sent by the network device.
  • the first uplink signal and the resource for transmitting the first uplink signal can be determined.
  • the terminal device receives the configuration information of the first uplink signal sent by the network device. That is, after the condition is triggered, the network device will send the configuration information of the first uplink signal.
  • the second threshold may be preset or pre-configured by the network device through signaling.
  • the terminal device determines to switch from the first downlink BWP to the second downlink BWP, and the terminal device switches from the first downlink BWP to the second downlink BWP After that, the terminal device sends a second uplink signal to the network device to indicate the information of the second downlink BWP, and/or, indicate the information of the uplink BWP corresponding to the second downlink BWP.
  • the second uplink signal includes index information of the second downlink BWP and/or index information of the uplink BWP corresponding to the second downlink BWP. That is, the terminal device can explicitly instruct the terminal device to switch from the first downlink BWP to the second downlink BWP through the index information of the second downlink BWP. Further, since the third corresponding relationship exists between the downlink BWP and the uplink BWP, the terminal device may also explicitly instruct the terminal device to select the uplink BWP corresponding to the first downlink BWP through the index information of the second downlink BWP. Switch to the uplink BWP corresponding to the second downlink BWP.
  • the terminal device sends the second uplink signal on the uplink BWP corresponding to the second downlink BWP. That is, the terminal device can implicitly instruct the terminal device to switch from the first downlink BWP to the second downlink BWP by sending the second uplink signal on the uplink BWP corresponding to the second downlink BWP, and implicitly instruct the The terminal device switches from the uplink BWP corresponding to the first downlink BWP to the uplink BWP corresponding to the second downlink BWP.
  • the terminal device sends the second uplink signal on the uplink BWP corresponding to the second downlink BWP according to the second correspondence, where the second uplink signal corresponds to index information of the second downlink BWP, and the first
  • the second correspondence is a correspondence between a plurality of uplink information and indexes of the plurality of downlink BWPs, and the plurality of uplink information includes the second uplink signal.
  • the terminal device can implicitly instruct the terminal device to switch from the first downlink BWP to the second downlink BWP by sending the second uplink signal. Further, since the third corresponding relationship exists between the downlink BWP and the uplink BWP, the terminal device can also implicitly instruct the terminal device to switch from the uplink BWP corresponding to the first downlink BWP through the transmission of the second uplink signal To the uplink BWP corresponding to the second downlink BWP.
  • the second correspondence may be as shown in Table 4 or Table 5 above.
  • the second correspondence is preset, or the second correspondence is pre-configured by the network device through signaling.
  • the network device sends sixth configuration information to the terminal device through signaling in advance, and the sixth configuration information is used to configure the second correspondence.
  • the second uplink signal is one of the following:
  • Random access preamble dedicated SR, dedicated SRS, MAC CE signaling or RRC message.
  • the terminal device receives the configuration information of the second uplink signal.
  • the second uplink signal and the resource for transmitting the second uplink signal can be determined.
  • the terminal device receives the configuration information of the second uplink signal. That is, after the condition is triggered, the network device will send the configuration information of the second uplink signal.
  • the terminal device determines the time point at which the BWP switch can be performed and the transmission time of the second uplink signal There may be a certain interval between points. If the terminal device executes the BWP switch at the time when it is determined that the BWP switch can be performed, it may result in a certain time interval between the time point of the BWP switch and the sending time point of the second uplink signal. Terminal devices have inconsistent understanding of the current working BWP. Therefore, in order to maintain the consistency of understanding of the activated BWP between the network device and the terminal device, the terminal device needs to start performing BWP handover at an interval before sending the second uplink signal to the network device.
  • the terminal device determines to switch from downlink BWP 1 to downlink BWP 2 at time T1, and switches from downlink BWP 1 to downlink BWP 2 at time T2.
  • the first time interval is sent to the network The device starts to send the second uplink signal.
  • the first duration may be the maximum time to ensure that the terminal device starts to switch from the downlink BWP to the end of the downlink BWP switch.
  • the first duration is preset, or the first duration is pre-configured by the network device through signaling.
  • the network device sends seventh configuration information to the terminal device through signaling in advance, and the seventh configuration information is used to configure the first duration.
  • the terminal device autonomously switches the downlink BWP and/or the uplink BWP based on the measurement of the downlink reference signal, which meets the demand for fast switching of the BWP caused by the fast switching of the satellite beam in satellite communication, which can be effective
  • the DCI overhead on the network side is saved, and since the handover process based on terminal reporting is reduced, more timely BWP handover can be guaranteed.
  • FIG. 6 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
  • the terminal device 300 includes:
  • the processing unit 310 is configured to measure multiple downlink reference signals corresponding to multiple downlink BWPs;
  • the processing unit 310 is further configured to determine whether to switch from the first downlink BWP to the second downlink BWP according to the measurement results of the plurality of downlink reference signals corresponding to the plurality of downlink BWPs, where the first downlink BWP is active.
  • the first downlink BWP and the second downlink BWP belong to the multiple downlink BWPs.
  • the measurement result includes at least one of the following:
  • RSRP corresponding to BWP RSRQ corresponding to BWP
  • RS-SINR RS-SINR corresponding to BWP
  • CQI CQI corresponding to BWP.
  • processing unit 310 is specifically configured to:
  • the measurement result of the downlink reference signal corresponding to the second downlink BWP is greater than the measurement result of the downlink reference signal corresponding to the first downlink BWP, switching from the first downlink BWP to the second downlink BWP.
  • processing unit 310 is specifically configured to:
  • the first threshold is preset, or the first threshold is pre-configured by the network device through signaling.
  • the measurement result of the downlink reference signal corresponding to the second downlink BWP is the largest among the measurement results of the multiple downlink reference signals corresponding to the multiple downlink BWPs.
  • the terminal device 300 determines to switch from the first downlink BWP to the second downlink BWP, the terminal device 300 further includes:
  • the communication unit 320 is configured to send a first uplink signal to indicate information of the second downlink BWP before the terminal device 300 switches from the first downlink BWP to the second downlink BWP, and/or indicate the second downlink BWP 2.
  • the first uplink signal includes index information of the second downlink BWP and/or index information of the uplink BWP corresponding to the second downlink BWP.
  • the communication unit 320 is specifically configured to:
  • the first uplink signal is sent on the uplink BWP corresponding to the first downlink BWP, where the first uplink signal corresponds to index information of the second downlink BWP, and the first correspondence is multiple
  • the corresponding relationship between the uplink information and the indexes of the plurality of downlink BWPs, and the plurality of uplink information includes the first uplink signal.
  • the first correspondence is preset, or the first correspondence is pre-configured by the network device through signaling.
  • the first uplink signal is one of the following:
  • Random access preamble dedicated SR, dedicated SRS, MAC CE signaling or RRC message.
  • the communication unit 320 is further configured to receive configuration information of the first uplink signal.
  • the communication unit 320 is specifically configured to:
  • the terminal device 300 determines to switch from the first downlink BWP to the second downlink BWP, the terminal device 300 further includes:
  • the communication unit 320 is configured to send a second uplink signal to indicate the information of the second downlink BWP after the terminal device 300 switches from the first downlink BWP to the second downlink BWP, and/or to indicate the second downlink BWP 2.
  • the second uplink signal includes index information of the second downlink BWP and/or index information of the uplink BWP corresponding to the second downlink BWP.
  • the communication unit 320 is specifically configured to:
  • the second uplink signal is sent on the uplink BWP corresponding to the second downlink BWP.
  • the communication unit 320 is specifically configured to:
  • the second uplink signal is sent on the uplink BWP corresponding to the second downlink BWP, where the second uplink signal corresponds to the index information of the second downlink BWP, and the second correspondence is multiple uplinks.
  • the corresponding relationship between the information and the indexes of the multiple downlink BWPs, and the multiple uplink information includes the second uplink signal.
  • the second correspondence is preset, or the second correspondence is pre-configured by the network device through signaling.
  • the second uplink signal is one of the following:
  • Random access preamble dedicated SR, dedicated SRS, MAC CE signaling or RRC message.
  • the communication unit 320 is further configured to receive configuration information of the second uplink signal.
  • the communication unit 320 is specifically configured to:
  • the configuration information of the second uplink signal is received.
  • the terminal device 300 is switched from the first downlink BWP to the second downlink BWP and there is a first time interval between the start time of sending the second uplink signal.
  • the first duration is preset, or the first duration is pre-configured by the network device through signaling.
  • the multiple downlink reference signals corresponding to the multiple downlink BWPs are preset, or the multiple downlink reference signals corresponding to the multiple downlink BWPs are pre-configured by the network device through signaling.
  • processing unit 310 is specifically configured to:
  • the measurement periods of the multiple downlink reference signals corresponding to the multiple downlink BWPs are preset, or the measurement periods of the multiple downlink reference signals corresponding to the multiple downlink BWPs are predetermined by the network device through signaling. Configured.
  • the processing unit 310 is further configured to determine whether to perform uplink BWP handover.
  • processing unit 310 is specifically configured to:
  • the terminal device determines to switch from the first downlink BWP to the second downlink BWP, according to the third correspondence, it is determined to switch from the uplink BWP corresponding to the first downlink BWP to the uplink BWP corresponding to the second downlink BWP,
  • the third correspondence is the correspondence between the multiple downlink BWPs and the multiple uplink BWPs.
  • the third correspondence is preset, or the third correspondence is pre-configured by the network device through signaling.
  • the multiple downlink reference signals corresponding to the multiple downlink BWPs include synchronization signal blocks or CSI-RS.
  • terminal device 300 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 300 are to implement the method shown in FIG. 3 respectively.
  • the corresponding process of the terminal equipment in 200 will not be repeated here.
  • FIG. 7 is a schematic structural diagram of a communication device 400 provided by an embodiment of the present application.
  • the communication device 400 shown in FIG. 7 includes a processor 410, and the processor 410 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 400 may further include a memory 420.
  • the processor 410 can call and run a computer program from the memory 420 to implement the method in the embodiment of the present application.
  • the memory 420 may be a separate device independent of the processor 410, or may be integrated in the processor 410.
  • the communication device 400 may further include a transceiver 430, and the processor 410 may control the transceiver 430 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.
  • the transceiver 430 may include a transmitter and a receiver.
  • the transceiver 430 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 400 may specifically be a network device of an embodiment of the application, and the communication device 400 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For brevity, details are not repeated here. .
  • the communication device 400 may specifically be a terminal device of an embodiment of the present application, and the communication device 400 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, it is not here. Repeat it again.
  • Fig. 8 is a schematic structural diagram of a device according to an embodiment of the present application.
  • the apparatus 500 shown in FIG. 8 includes a processor 510, and the processor 510 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the apparatus 500 may further include a memory 520.
  • the processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.
  • the memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.
  • the device 500 may further include an input interface 530.
  • the processor 510 can control the input interface 530 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the device 500 may further include an output interface 540.
  • the processor 510 can control the output interface 540 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application.
  • the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application.
  • details are not described herein again.
  • the device can be applied to the terminal device in the embodiment of the present application, and the device can implement the corresponding process implemented by the first terminal device in each method of the embodiment of the present application.
  • the device can implement the corresponding process implemented by the first terminal device in each method of the embodiment of the present application.
  • the device mentioned in the embodiment of the present application may also be a chip.
  • it can be a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.
  • FIG. 9 is a schematic block diagram of a communication system 600 according to an embodiment of the present application.
  • the communication system 600 includes a first terminal device 610, a network device 620, and a second terminal device 630.
  • the first terminal device 610 may be used to implement the corresponding function implemented by the first terminal device in the foregoing method
  • the network device 620 may be used to implement the corresponding function implemented by the network device in the foregoing method
  • the first The terminal device 610 communicates with the second terminal device 630 through a side link.
  • the second terminal device 630 can be used to implement the corresponding functions implemented by the second terminal device in the above method. For the sake of brevity, it is not here. Repeat it again.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • 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), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the first terminal device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the first terminal device in each method of the embodiment of the present application.
  • I will not repeat them here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the first terminal device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the first terminal device in each method of the embodiment of the present application.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the terminal device in the embodiment of the present application, and when the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the first terminal device in each method of the embodiment of the present application, For brevity, I won't repeat them here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本申请实施例提供了一种BWP切换方法和终端设备，终端设备可以基于下行参考信号的测量，实现自主的下行BWP和/或上行BWP切换，从而解决卫星通信中由于卫星波束的快速切换导致的BWP快频繁切换对卫星的通信性能的影响。该BWP切换方法包括：终端设备测量多个下行BWP所对应的多个下行参考信号；该终端设备根据该多个下行BWP所对应的多个下行参考信号的测量结果，确定是否从第一下行BWP切换至第二下行BWP，其中，该第一下行BWP为激活的BWP，该第一下行BWP和该第二下行BWP属于该多个下行BWP。

Description

BWP切换方法和终端设备 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及BWP切换方法和终端设备。
背景技术
新空口(New Radio，NR)系统定义了包括卫星网络在内的非地面网络(Non-terrestrial networks，NTN)部署场景，一颗卫星可以多波束对地面进行覆盖，从而为地面用户提供通信服务。基于NR的卫星通信可以采用多色部署方式，即一颗卫星的相邻波束上采用不同的频率，从而避免相邻波束之间的干扰。然而，由于卫星的移动速度很快，在一个波束的停留时间可能仅仅有几秒钟至数十秒钟，因此面临快速的波束切换，同时，卫星波束的切换导致了终端设备的带宽部分(Band Width Part，BWP)的频繁被动切换，影响卫星通信性能。如何优化BWP频繁切换对卫星通信性能的影响，是一个亟待解决的问题。
发明内容
本申请实施例提供了一种BWP切换方法和终端设备，终端设备可以基于下行参考信号的测量，实现自主的下行BWP和/或上行BWP切换，从而解决卫星通信中由于卫星波束的快速切换导致的BWP快频繁切换对卫星的通信性能的影响。
第一方面，提供了一种BWP切换方法，该方法包括：
终端设备测量多个下行BWP所对应的多个下行参考信号；
该终端设备根据该多个下行BWP所对应的多个下行参考信号的测量结果，确定是否从第一下行BWP切换至第二下行BWP，其中，该第一下行BWP为激活的BWP，该第一下行BWP和该第二下行BWP属于该多个下行BWP。
第二方面，提供了一种终端设备，用于执行上述第一方面或其各实现方式中的方法。
具体地，该终端设备包括用于执行上述第一方面或其各实现方式中的方法的功能模块。
第三方面，提供了一种终端设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第一方面或其各实现方式中的方法。
第四方面，提供了一种芯片，用于实现上述第一方面或其各实现方式中的方法。
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该芯片的设备执行如上述第一方面或其各实现方式中的方法。
第五方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第一方面或其各实现方式中的方法。
第六方面，提供了一种计算机程序产品，包括计算机程序指令，所述计算机程序指令使得计算机执行上述第一方面或其各实现方式中的方法。
第七方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面或其各实现方式中的方法。
通过上述技术方案，终端设备可以根据多个下行BWP所对应的多个下行参考信号的测量结果，确定是否从当前激活的第一下行BWP切换至第二下行BWP，从而实现自主的下行BWP切换，解决了卫星通信中由于卫星波束的快速切换导致的BWP快频繁切换对卫星的通信性能的影响。
附图说明
图1是本申请实施例提供的一种通信系统架构的示意性图。
图2是多色部署的一种实现方式的示意性图。
图3是根据本申请实施例提供的一种BWP切换方法的示意性流程图。
图4是本申请实施例提供的一种卫星移动导致波束的BWP所对应的信号强度变化的示意图。
图5是本申请实施例提供的一种第一时长的示意图。
图6是根据本申请实施例提供的一种终端设备的示意性框图。
图7是根据本申请实施例提供的一种通信设备的示意性框图。
图8是根据本申请实施例提供的一种芯片的示意性框图。
图9是根据本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实 施例是本申请一部分实施例，而不是全部的实施例。针对本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、新无线(New Radio，NR)系统、NR系统的演进系统、免授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、免授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、下一代通信系统或其他通信系统等。
通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，以及车辆间(Vehicle to Vehicle，V2V)通信等，本申请实施例也可以应用于这些通信系统。
可选地，本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation，CA)场景，也可以应用于双连接(Dual Connectivity，DC)场景，还可以应用于独立(Standalone，SA)布网场景。
本申请实施例对应用的频谱并不限定。例如，本申请实施例可以应用于授权频谱，也可以应用于免授权频谱。
示例性的，本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110，网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备进行通信。
图1示例性地示出了一个网络设备和两个终端设备，可选地，该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
可选地，该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例对此不作限定。
应理解，本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例，通信设备可包括具有通信功能的网络设备110和终端设备120，网络设备110和终端设备120可以为上文所述的具体设备，此处不再赘述；通信设备还可包括通信系统100中的其他设备，例如网络控制器、移动管理实体等其他网络实体，本申请实施例中对此不做限定。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请实施例结合终端设备和网络设备描述了各个实施例，其中：终端设备也可以称为用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。终端设备可以是WLAN中的站点(STAION，ST)，可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及下一代通信系统，例如，NR网络中的终端设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
网络设备可以是用于与移动设备通信的设备，网络设备可以是WLAN中的接入点(Access Point，AP)，GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入 点，或者车载设备、可穿戴设备以及NR网络中的网络设备(gNB)或者未来演进的PLMN网络中的网络设备等。
在本申请实施例中，网络设备为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
NR系统中，系统带宽与终端带宽可能都会达到数百MHz甚至数GHz的带宽以支持高速移动数据传输，但在实际数据传输时，并非时时刻刻都需要如此大的带宽。例如，在仅需支持低数据速率传输的工作场景时(如微信聊天)，终端仅需要采用较小的工作带宽，例如10MHz的带宽就已经足够。为了灵活支持上述不同场景的不同带宽需求，5G引入了BWP的概念。BWP可以是系统带宽的一部分，例如系统带宽为100MHz，终端可以采用小于100MHz的带宽，例如20、50MHz的带宽部分在系统带宽内部进行数据传输。NR支持向终端同时配置最多4个BWP，不同的BWP可以具有不同的带宽大小、不同的频率位置以及不同的子载波间隔。网络可以根据终端的业务需求使得终端在多个BWP之间进行切换，例如较高业务速率传输时，使用较大带宽的BWP，较小的业务数据速率传输时使用较小带宽的BWP。
目前NR系统支持如下两个BWP切换方式：
方式一，通过下行控制信息(Downlink Control Information，DCI)方式对终端的BWP进行切换，网络在对终端进行数据调度的DCI中携带BWP指示域(Bandwidth part indicator)，在需要对终端的BWP进行切换时，网络在向终端发送的DCI中的BWP指示域中指示与终端当前所在的BWP不同的BWP的，终端收到该BWP后执行BWP的切换。
方式二，基于定时器(timer)的方式来控制BWP的切换，终端在当前BWP每接收到一次物理下行控制信道(Physical Downlink Control Channel，PDCCH)调度，则所述timer重置，此后持续计时，当所述timer超时时，终端切换至缺省(default)BWP。
在NR系统中，考虑采用卫星通信为用户提供通信服务，多色部署为通信卫星部署的典型方式，多色部署可以有效避免相邻两个波束之间的干扰问题。然而，基于NR系统的卫星通信，如果采用多色部署，可能会带来一些新的问题。对于近地轨道卫星，由于卫星的移动速度很快，终端设备在一个波束的停留时间可能仅仅有几秒钟至数十秒钟，因此，终端设备面临快速的波束切换；另一方面，多色部署情况下，相邻的波束采用了不同的频率，因此波束切换也会导致频率的切换。对于处于连接态的NR终端，工作频率的切换可能意味着需要对终端的BWP进行切换。对应上述卫星通信的场景，卫星通信的波束切换时，终端的可能从对应原波束的工作频率的BWP切换至对应新波束的工作频率的另一BWP。例如，如图2所示，假设终端当前位于波束4中(采用频率F4，假设对应BWP1)，卫星波束按照箭头与线段所示方向移动，那么终端后续分别被采用工作频率F1和F4，F1假设对应BWP2，以及终端后续分别需要从F4的BWP1切换至F1的BWP2，在从F1的BWP2切换至F4的BWP1…。由此可见，卫星波束的切换导致了终端的BWP的频繁被动切换。
基于timer的方式无法应用于卫星波束的切换导致BWP的频繁被动切换的场景，
其一，波束切换的时间与timer超时的时间无法确保一致；其二，波束切换期望切换至的BWP不一定是default BWP。
基于DCI的BWP切换方式也无法应用于卫星波束的切换导致BWP的频繁被动切换的场景，
其一，波束的切换导致波束中服务的终端都需要进行BWP切换，不管在波束切换时终端有没有数据传输都需要发送BWP切换的DCI，这会导致DCI开销问题，在用户较多时，还可能导致DCI不足的情况；
其二，BWP切换前，终端需要上报测量结果，网络根据终端测量结果的变化，判断波束是否发生变化，是否进行BWP切换。当判断需要BWP切换时，向终端发送BWP切换的DCI，这一过程中，如果由于原波束信号的快速变弱导致终端不能及时正确的上报测量结果，则网络不能正确判断是否进行BWP切换，进而导致BWP切换的延误，影响终端的正常通信。
基于上述问题，本申请提出一种终端设备基于下行参考信号的测量，自主切换下行BWP和/或上行BWP的方案，满足卫星通信中由于卫星波束的快速切换导致的BWP快速切换的需求，可以有效节省网络侧的DCI开销，且由于减少了基于终端上报进行的切换流程，可以保证更加及时的BWP切换。
以下详细阐述本申请针对上述技术问题而设计的BWP切换方案。
图3是根据本申请实施例的BWP切换方法200的示意性流程图，如图3所示，该方法200可以 包括如下内容：
S210，终端设备测量多个下行BWP所对应的多个下行参考信号；
S220，该终端设备根据该多个下行BWP所对应的多个下行参考信号的测量结果，确定是否从第一下行BWP切换至第二下行BWP，其中，该第一下行BWP为激活的BWP，该第一下行BWP和该第二下行BWP属于该多个下行BWP。
可选地，该多个下行BWP可以分别对应卫星通信中多色部署场景下的一个频率。例如，多色部署场景下的卫星通信采用4个不同的频率进行对地面进行覆盖，4个频率分别记为F1、F2、F3和F4，以及F1对应BWP1，F2对应BWP2，F3对应BWP3，F4对应BWP4。
需要说明的是，该多个下行BWP可以是网络设备配置的，且该多个下行BWP的数量小于或者等于4，每一个下行BWP分别位于一个卫星波束所对应的载波带宽中。
可选地，在本申请实施例中，该多个下行BWP所对应的多个下行参考信号包括同步信号块或者信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)。该同步信号块可以是同步信号块(Synchronization Signal Block，SSB)或者物理层广播信道(Physical Broadcast Channel，PBCH)信号块。
需要说明的是，该多个下行BWP中每个下行BWP对应一个下行参考信号。即该多个下行BWP与该多个下行参考信号一一对应。当然，该多个下行BWP与该多个下行参考信号的对应关系也可以是多对一的，本申请实施例对此不作限定。
可选地，该多个下行BWP所对应的多个下行参考信号为预设的，或者，该多个下行BWP所对应的多个下行参考信号为网络设备预先通过信令配置的。
例如，网络设备预先通过信令向终端设备发送第一配置信息，该第一配置信息用于配置该多个下行BWP所对应的多个下行参考信号。
可选地，在本申请实施例中，该测量结果包括但不限于以下中的至少一种：
BWP所对应的参考信号接收功率(Reference Signal Receiving Power，RSRP)，BWP所对应的参考信号接收质量(Reference Signal Receiving Quality，RSRQ)，BWP所对应的参考信号载波干扰噪声比(Reference Signal Carrier to Interference plus Noise Ratio，RS-SINR)，BWP所对应的信道质量指示(Channel Quantity Indicator，CQI)。
可选地，上述步骤S210具体可以是：
该终端设备周期性测量该多个下行BWP所对应的多个下行参考信号。
可选地，该多个下行BWP所对应的多个下行参考信号的测量周期为预设的，或者，该多个下行BWP所对应的多个下行参考信号的测量周期为网络设备通过信令预先配置的。
例如，网络设备预先通过信令向终端设备发送第二配置信息，该第二配置信息用于配置该多个下行BWP所对应的多个下行参考信号的测量周期。
需要说明的是，终端设备可以基于对多个卫星波束对应的多个下行BWP所分别对应的下行参考信号的周期性测量，评估各个下行BWP信号强度的变化趋势，进而判断卫星波束的切换趋势，如图4所示，随着卫星的快速移动，波束1的下行BWP所对应的RSRP信号强度在逐渐下降，而波束2的下行BWP所对应的RSRP信号强度在逐渐上升。因此，终端设备可基于多个下行BWP的测量结果之间的相对关系进行下行BWP的切换。
可选地，该第二下行BWP所对应的下行参考信号的测量结果在该多个下行BWP中对应的多个下行参考信号的测量结果中最大。
可选地，上述步骤S220具体可以是：
若该第二下行BWP所对应的下行参考信号的测量结果大于该第一下行BWP所对应的下行参考信号的测量结果，该终端设备从该第一下行BWP切换至该第二下行BWP。
当然，若该第二下行BWP所对应的下行参考信号的测量结果小于或者等于该第一下行BWP所对应的下行参考信号的测量结果，该终端设备不从该第一下行BWP切换至该第二下行BWP。
例如，该多个下行BWP包括下行BWP1、下行BWP2、下行BWP3和下行BWP4，下行BWP1为激活BWP，该下行BWP1所对应的下行参考信号的测量结果为A，该下行BWP2所对应的下行参考信号的测量结果为B，该下行BWP3所对应的下行参考信号的测量结果为C，该下行BWP4所对应的下行参考信号的测量结果为D。若B大于A，该终端设备确定从下行BWP1切换至下行BWP2；若C大于A，该终端设备确定从下行BWP1切换至下行BWP3；若D大于A，该终端设备确定从下行BWP1切换至下行BWP4。若B和C都大于A，且C大于B，该终端设备确定从下行BWP1切换至下行BWP3。
可选地，上述步骤S220具体可以是：
若该第二下行BWP所对应的下行参考信号的测量结果与该第一下行BWP所对应的下行参考信号的测量结果的差值大于第一阈值，该终端设备从该第一下行BWP切换至该第二下行BWP。
当然，若该第二下行BWP所对应的下行参考信号的测量结果与该第一下行BWP所对应的下行参考信号的测量结果的差值小于或者等于第一阈值，该终端设备不从该第一下行BWP切换至该第二下行BWP。
应理解，该第二下行BWP所对应的下行参考信号的测量结果与该第一下行BWP所对应的下行参考信号的测量结果的差值，可以理解为，该第二下行BWP所对应的下行参考信号的测量结果减去该第一下行BWP所对应的下行参考信号的测量结果的差值。
可选地，该第一阈值为预设的，或者，该第一阈值为网络设备通过信令预先配置的。
例如，网络设备预先通过信令向终端设备发送第三配置信息，该第三配置信息用于配置该第一阈值。
例如，该多个下行BWP包括下行BWP1、下行BWP2、下行BWP3和下行BWP4，下行BWP1为激活BWP，该下行BWP1所对应的下行参考信号的测量结果为A，该下行BWP2所对应的下行参考信号的测量结果为B，该下行BWP3所对应的下行参考信号的测量结果为C，该下行BWP4所对应的下行参考信号的测量结果为D。若B-A＞第一阈值，该终端设备确定从下行BWP1切换至下行BWP2；若C-A＞第一阈值，该终端设备确定从下行BWP1切换至下行BWP3；若D-A＞第一阈值，该终端设备确定从下行BWP1切换至下行BWP4。若B-A＞第一阈值，C-A＞第一阈值，且C＞B，该终端设备确定从下行BWP1切换至下行BWP3。
在本申请实施例中，卫星波束的变化不但会导致下行频率的变化和下行BWP的变化，也会导致上行频率变化和上行BWP的切换。因此，为了确保上行BWP与下行BWP都正确是进行切换，可以将卫星波束的上行BWP与下行BWP进行关联，例如在频分双工(Frequency Division Duplexing)频段，将上行BWP与下行BWP进行关联。当卫星的下行BWP发生切换时，其对应的上行BWP也发生相对应的切换。
可选地，在本申请实施例中，在该终端设备确定是否进行下行BWP切换之后，该终端设备还可以确定是否进行上行BWP切换。
可选地，若该终端设备确定从该第一下行BWP切换至该第二下行BWP，该终端设备可以根据第三对应关系，确定从该第一下行BWP对应的上行BWP切换至该第二下行BWP对应的上行BWP，其中，该第三对应关系为该多个下行BWP与多个上行BWP的对应关系。
例如，该第三对应关系可以如下表1所示。
表1，下行BWP与上行BWP的对应关系
下行BWP索引 1 2 3
上行BWP索引 1 2 3
可选地，该第三对应关系为预设的，或者，该第三对应关系为网络设备通过信令预先配置的。
例如，网络设备预先通过信令向终端设备发送第四配置信息，该第四配置信息用于配置该第三对应关系。
在本申请实施例中，由于是终端设备自主的进行上行BWP和/或下行BWP的切换，网络设备未知终端设备的BWP切换情况，为保证网络设备与终端设备的正确通信，终端设备需要及时将BWP切换的情况向网络设备上报。
可选地，在本申请实施例中，若终端设备确定从该第一下行BWP切换至该第二下行BWP，以及在该终端设备从该第一下行BWP切换至该第二下行BWP之前，该终端设备向该网络设备发送第一上行信号，以指示该第二下行BWP的信息，和/或，指示该第二下行BWP对应的上行BWP的信息。
可选地，该第一上行信号包括该第二下行BWP的索引信息。即该终端设备可以通过该第二下行BWP的索引信息显式指示该终端设备从该第一下行BWP切换至该第二下行BWP。进一步地，由于下行BWP与上行BWP之间存在上述第三对应关系，即该终端设备也可以通过该第二下行BWP的索引信息显式指示该终端设备从该第一下行BWP对应的上行BWP切换至该第二下行BWP对应的上行BWP。
可选地，该第一上行信号包括该第二下行BWP对应的上行BWP的索引信息。即该终端设备可以通过该第二下行BWP对应的上行BWP的索引信息显式指示该终端设备从该第一下行BWP对应的上行BWP切换至该第二下行BWP对应的上行BWP。
可选地，该终端设备根据第一对应关系，在该第一下行BWP对应的上行BWP上发送该第一上行信号，其中，该第一上行信号对应该第二下行BWP的索引信息，该第一对应关系为多个上行信息与该多个下行BWP的索引之间的对应关系，该多个上行信息包括该第一上行信号。
即该终端设备可以通过该第一上行信号的发送隐式指示该终端设备从该第一下行BWP切换至该第二下行BWP。进一步地，由于下行BWP与上行BWP之间存在上述第三对应关系，即该终端设备也可以通过该第一上行信号的发送隐式指示该终端设备从该第一下行BWP对应的上行BWP切换至该第二下行BWP对应的上行BWP。
例如，该第一对应关系可以如下表2或者表3所示。
表2，上行信号与下行BWP的索引之间的对应关系
上行信号索引 上行信号a 上行信号b 上行信号c
下行BWP索引 下行BWP a 下行BWP b 下行BWP c
表3，上行信号与BWP的索引之间的对应关系
上行信号索引 上行信号a 上行信号b 上行信号c
下行BWP索引 下行BWP a 下行BWP b 下行BWP c
上行BWP索引 上行BWP a 上行BWP b 上行BWP c
可选地，该第一对应关系为预设的，或者，该第一对应关系为网络设备通过信令预先配置的。
例如，网络设备预先通过信令向终端设备发送第五配置信息，该第五配置信息用于配置该第一对应关系。
可选地，该第一上行信号为以下中的一种：
随机接入前导码(preamble)、专用的调度请求(Scheduling Request，SR)、专用的探测参考信号(Sounding Reference Signal，SRS)、媒体接入控制控制元素(Media Access Control Control Element，MAC CE)信令或者无线资源控制(Radio Resource Control，RRC)消息。
可选地，该终端设备接收网络设备发送的所述第一上行信号的配置信息。从而，可以确定该第一上行信号和发送该第一上行信号的资源。
例如，在该第一下行BWP所对应的下行参考信号的测量结果小于第二阈值的情况下，该终端设备接收网络设备发送的该第一上行信号的配置信息。即在条件触发之后，该网络设备才会发送该第一上行信号的配置信息。
可选地，该第二阈值可以是预设的，也可以是网络设备通过信令预先配置的。
可选地，在本申请实施例中，若该终端设备确定从该第一下行BWP切换至该第二下行BWP，以及在该终端设备从该第一下行BWP切换至该第二下行BWP之后，该终端设备向网络设备发送第二上行信号，以指示该第二下行BWP的信息，和/或，指示该第二下行BWP对应的上行BWP的信息。
可选地，该第二上行信号包括该第二下行BWP的索引信息和/或该第二下行BWP对应的上行BWP的索引信息。即该终端设备可以通过该第二下行BWP的索引信息显式指示该终端设备从该第一下行BWP切换至该第二下行BWP。进一步地，由于下行BWP与上行BWP之间存在上述第三对应关系，即该终端设备也可以通过该第二下行BWP的索引信息显式指示该终端设备从该第一下行BWP对应的上行BWP切换至该第二下行BWP对应的上行BWP。
可选地，该终端设备在该第二下行BWP对应的上行BWP上发送该第二上行信号。即该终端设备可以通过在该第二下行BWP对应的上行BWP上发送该第二上行信号，隐式指示该终端设备从该第一下行BWP切换至该第二下行BWP，以及隐式指示该终端设备从该第一下行BWP对应的上行BWP切换至该第二下行BWP对应的上行BWP。
可选地，该终端设备根据第二对应关系，在该第二下行BWP对应的上行BWP上发送该第二上行信号，其中，该第二上行信号对应该第二下行BWP的索引信息，该第二对应关系为多个上行信息与该多个下行BWP的索引之间的对应关系，该多个上行信息包括该第二上行信号。
即该终端设备可以通过该第二上行信号的发送隐式指示该终端设备从该第一下行BWP切换至该第二下行BWP。进一步地，由于下行BWP与上行BWP之间存在上述第三对应关系，即该终端设备也可以通过该第二上行信号的发送隐式指示该终端设备从该第一下行BWP对应的上行BWP切换至该第二下行BWP对应的上行BWP。
例如，该第二对应关系可以如上表4或者表5所示。
表4，上行信号与下行BWP的索引之间的对应关系
上行信号索引 上行信号1 上行信号2 上行信号3
下行BWP索引 下行BWP 1 下行BWP 2 下行BWP 3
表5，上行信号与BWP的索引之间的对应关系
上行信号索引 上行信号1 上行信号2 上行信号3
下行BWP索引 下行BWP 1 下行BWP 2 下行BWP 3
上行BWP索引 上行BWP 1 上行BWP 2 上行BWP 3
可选地，该第二对应关系为预设的，或者，该第二对应关系为网络设备通过信令预先配置的。
例如，网络设备预先通过信令向终端设备发送第六配置信息，该第六配置信息用于配置该第二对应关系。
可选地，该第二上行信号为以下中的一种：
随机接入前导码、专用的SR、专用的SRS、MAC CE信令或者RRC消息。
可选地，该终端设备接收该第二上行信号的配置信息。从而，可以确定该第二上行信号和发送该第二上行信号的资源。
例如，在该第一下行BWP所对应的下行参考信号的测量结果小于第三阈值的情况下，该终端设备接收该第二上行信号的配置信息。即在条件触发之后，该网络设备才会发送该第二上行信号的配置信息。
在本申请实施例中，由于网络设备所配置的第二上行信号不能确保在每一个上行时隙中均出现，因此，终端设备确定可进行BWP切换的时间点与该第二上行信号的发送时间点可能存在一定的间隔。如果终端设备在确定可进行BWP切换的时间即执行BWP切换，则可能导致在BWP切换的时间点与该第二上行信号的发送时间点之间存在一定的时间间隔，该时间间隔内网络设备与终端设备对当前工作的BWP的理解不一致。因此，为了保持网络设备与终端设备对激活BWP的理解一致性，终端设备需要在向网络设备发送该第二上行信号之前间隔一个时段开始执行BWP切换。
可选地，在本申请实施例中，该终端设备从该第一下行BWP切换至该第二下行BWP的开始时间与发送该第二上行信号的开始时间之间间隔第一时长。例如，如图5所示，该终端设备在T1时刻确定从下行BWP 1切换至下行BWP 2，以及在T2时刻开始从下行BWP 1切换至下行BWP 2，在T2时刻之后间隔第一时长向网络设备开始发送该第二上行信号。
需要说明的是，该第一时长可以是保证该终端设备开始下行BWP切换到下行BWP切换结束的最大时间。
可选地，该第一时长为预设的，或者，该第一时长为网络设备通过信令预先配置的。
例如，该网络设备预先通过信令向该终端设备发送第七配置信息，该第七配置信息用于配置该第一时长。
因此，在本申请实施例中，终端设备基于下行参考信号的测量，自主切换下行BWP和/或上行BWP的方案，满足卫星通信中由于卫星波束的快速切换导致的BWP快速切换的需求，可以有效节省网络侧的DCI开销，且由于减少了基于终端上报进行的切换流程，可以保证更加及时的BWP切换。
图6示出了根据本申请实施例的终端设备300的示意性框图。如图6所示，该终端设备300包括：
处理单元310，用于测量多个下行BWP所对应的多个下行参考信号；
该处理单元310还用于根据该多个下行BWP所对应的多个下行参考信号的测量结果，确定是否从第一下行BWP切换至第二下行BWP，其中，该第一下行BWP为激活的BWP，该第一下行BWP和该第二下行BWP属于该多个下行BWP。
可选地，该测量结果包括以下中的至少一种：
BWP所对应的RSRP，BWP所对应的RSRQ，BWP所对应的RS-SINR，BWP所对应的CQI。
可选地，该处理单元310具体用于：
若该第二下行BWP所对应的下行参考信号的测量结果大于该第一下行BWP所对应的下行参考信号的测量结果，从该第一下行BWP切换至该第二下行BWP。
可选地，该处理单元310具体用于：
若该第二下行BWP所对应的下行参考信号的测量结果与该第一下行BWP所对应的下行参考信号的测量结果的差值大于第一阈值，从该第一下行BWP切换至该第二下行BWP。
可选地，该第一阈值为预设的，或者，该第一阈值为网络设备通过信令预先配置的。
可选地，该第二下行BWP所对应的下行参考信号的测量结果在该多个下行BWP中对应的多个下行参考信号的测量结果中最大。
可选地，若该终端设备300确定从该第一下行BWP切换至该第二下行BWP，该终端设备300还包括：
通信单元320，用于在该终端设备300从该第一下行BWP切换至该第二下行BWP之前，发送第一上行信号，以指示该第二下行BWP的信息，和/或，指示该第二下行BWP对应的上行BWP的信息。
可选地，该第一上行信号包括该第二下行BWP的索引信息和/或该第二下行BWP对应的上行BWP的索引信息。
可选地，该通信单元320具体用于：
根据第一对应关系，在该第一下行BWP对应的上行BWP上发送该第一上行信号，其中，该第一上行信号对应该第二下行BWP的索引信息，该第一对应关系为多个上行信息与该多个下行BWP的索引之间的对应关系，该多个上行信息包括该第一上行信号。
可选地，该第一对应关系为预设的，或者，该第一对应关系为网络设备通过信令预先配置的。
可选地，该第一上行信号为以下中的一种：
随机接入前导码、专用的SR、专用的SRS、MAC CE信令或者RRC消息。
可选地，该通信单元320还用于接收该第一上行信号的配置信息。
可选地，该通信单元320具体用于：
在该第一下行BWP所对应的下行参考信号的测量结果小于第二阈值的情况下，接收该第一上行信号的配置信息。
可选地，若该终端设备300确定从该第一下行BWP切换至该第二下行BWP，该终端设备300还包括：
通信单元320，用于在该终端设备300从该第一下行BWP切换至该第二下行BWP之后，发送第二上行信号，以指示该第二下行BWP的信息，和/或，指示该第二下行BWP对应的上行BWP的信息。
可选地，该第二上行信号包括该第二下行BWP的索引信息和/或该第二下行BWP对应的上行BWP的索引信息。
可选地，该通信单元320具体用于：
在该第二下行BWP对应的上行BWP上发送该第二上行信号。
可选地，该通信单元320具体用于：
根据第二对应关系，在该第二下行BWP对应的上行BWP上发送该第二上行信号，其中，该第二上行信号对应该第二下行BWP的索引信息，该第二对应关系为多个上行信息与该多个下行BWP的索引之间的对应关系，该多个上行信息包括该第二上行信号。
可选地，该第二对应关系为预设的，或者，该第二对应关系为网络设备通过信令预先配置的。
可选地，该第二上行信号为以下中的一种：
随机接入前导码、专用的SR、专用的SRS、MAC CE信令或者RRC消息。
可选地，该通信单元320还用于接收该第二上行信号的配置信息。
可选地，该通信单元320具体用于：
在该第一下行BWP所对应的下行参考信号的测量结果小于第三阈值的情况下，接收该第二上行信号的配置信息。
可选地，该终端设备300从该第一下行BWP切换至该第二下行BWP的开始时间与发送该第二上行信号的开始时间之间间隔第一时长。
可选地，该第一时长为预设的，或者，该第一时长为网络设备通过信令预先配置的。
可选地，该多个下行BWP所对应的多个下行参考信号为预设的，或者，该多个下行BWP所对应的多个下行参考信号为网络设备预先通过信令配置的。
可选地，该处理单元310具体用于：
周期性测量该多个下行BWP所对应的多个下行参考信号。
可选地，该多个下行BWP所对应的多个下行参考信号的测量周期为预设的，或者，该多个下行BWP所对应的多个下行参考信号的测量周期为网络设备通过信令预先配置的。
可选地，该处理单元310还用于确定是否进行上行BWP切换。
可选地，该处理单元310具体用于：
若该终端设备确定从该第一下行BWP切换至该第二下行BWP，根据第三对应关系，确定从该第一下行BWP对应的上行BWP切换至该第二下行BWP对应的上行BWP，其中，该第三对应关系为该多个下行BWP与多个上行BWP的对应关系。
可选地，该第三对应关系为预设的，或者，该第三对应关系为网络设备通过信令预先配置的。
可选地，该多个下行BWP所对应的多个下行参考信号包括同步信号块或者CSI-RS。
应理解，根据本申请实施例的终端设备300可对应于本申请方法实施例中的终端设备，并且终端设备300中的各个单元的上述和其它操作和/或功能分别为了实现图3所示方法200中终端设备的相应流程，为了简洁，在此不再赘述。
图7是本申请实施例提供的一种通信设备400示意性结构图。图7所示的通信设备400包括处理器410，处理器410可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图7所示，通信设备400还可以包括存储器420。其中，处理器410可以从存储器420 中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器420可以是独立于处理器410的一个单独的器件，也可以集成在处理器410中。
可选地，如图7所示，通信设备400还可以包括收发器430，处理器410可以控制该收发器430与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器430可以包括发射机和接收机。收发器430还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备400具体可为本申请实施例的网络设备，并且该通信设备400可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备400具体可为本申请实施例的终端设备，并且该通信设备400可以实现本申请实施例的各个方法中由第一终端设备实现的相应流程，为了简洁，在此不再赘述。
图8是本申请实施例的装置的示意性结构图。图8所示的装置500包括处理器510，处理器510可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图8所示，装置500还可以包括存储器520。其中，处理器510可以从存储器520中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器520可以是独立于处理器510的一个单独的器件，也可以集成在处理器510中。
可选地，该装置500还可以包括输入接口530。其中，处理器510可以控制该输入接口530与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该装置500还可以包括输出接口540。其中，处理器510可以控制该输出接口540与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该装置可应用于本申请实施例中的网络设备，并且该装置可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该装置可应用于本申请实施例中的终端设备，并且该装置可以实现本申请实施例的各个方法中由第一终端设备实现的相应流程，为了简洁，在此不再赘述。
可选地，本申请实施例提到的装置也可以是芯片。例如可以是系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图9是本申请实施例提供的一种通信系统600的示意性框图。如图9所示，该通信系统600包括第一终端设备610、网络设备620和第二终端设备630。
其中，该第一终端设备610可以用于实现上述方法中由第一终端设备实现的相应的功能，以及该网络设备620可以用于实现上述方法中由网络设备实现的相应的功能，该第一终端设备610与该第二终端设备630之间通过侧行链路进行通信，该第二终端设备630可以用于实现上述方法中由第二终端设备实现的相应的功能，为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由第一终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由第一终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由第一终端设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。针对这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (65)

  1. 一种BWP切换方法，其特征在于，包括：
    终端设备测量多个下行带宽部分BWP所对应的多个下行参考信号；
    所述终端设备根据所述多个下行BWP所对应的多个下行参考信号的测量结果，确定是否从第一下行BWP切换至第二下行BWP，其中，所述第一下行BWP为激活的BWP，所述第一下行BWP和所述第二下行BWP属于所述多个下行BWP。
  2. 根据权利要求1所述的方法，其特征在于，所述测量结果包括以下中的至少一种：
    BWP所对应的参考信号接收功率RSRP，BWP所对应的参考信号接收质量RSRQ，BWP所对应的参考信号载波干扰噪声比RS-SINR，BWP所对应的信道质量指示CQI。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端设备根据所述多个下行BWP所对应的多个下行参考信号的测量结果，确定是否从第一下行BWP切换至第二下行BWP，包括：
    若所述第二下行BWP所对应的下行参考信号的测量结果大于所述第一下行BWP所对应的下行参考信号的测量结果，所述终端设备从所述第一下行BWP切换至所述第二下行BWP。
  4. 根据权利要求1或2所述的方法，其特征在于，所述终端设备根据所述多个下行BWP所对应的多个下行参考信号的测量结果，确定是否从第一下行BWP切换至第二下行BWP，包括：
    若所述第二下行BWP所对应的下行参考信号的测量结果与所述第一下行BWP所对应的下行参考信号的测量结果的差值大于第一阈值，所述终端设备从所述第一下行BWP切换至所述第二下行BWP。
  5. 根据权利要求4所述的方法，其特征在于，所述第一阈值为预设的，或者，所述第一阈值为网络设备通过信令预先配置的。
  6. 根据权利要求3至5中任一项所述的方法，其特征在于，所述第二下行BWP所对应的下行参考信号的测量结果在所述多个下行BWP中对应的多个下行参考信号的测量结果中最大。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，若所述终端设备确定从所述第一下行BWP切换至所述第二下行BWP，所述方法还包括：
    在所述终端设备从所述第一下行BWP切换至所述第二下行BWP之前，所述终端设备发送第一上行信号，以指示所述第二下行BWP的信息，和/或，指示所述第二下行BWP对应的上行BWP的信息。
  8. 根据权利要求7所述的方法，其特征在于，所述第一上行信号包括所述第二下行BWP的索引信息和/或所述第二下行BWP对应的上行BWP的索引信息。
  9. 根据权利要求7所述的方法，其特征在于，所述终端设备发送第一上行信号，包括：
    所述终端设备根据第一对应关系，在所述第一下行BWP对应的上行BWP上发送所述第一上行信号，其中，所述第一上行信号对应所述第二下行BWP的索引信息，所述第一对应关系为多个上行信息与所述多个下行BWP的索引之间的对应关系，所述多个上行信息包括所述第一上行信号。
  10. 根据权利要求9所述的方法，其特征在于，所述第一对应关系为预设的，或者，所述第一对应关系为网络设备通过信令预先配置的。
  11. 根据权利要求7至10中任一项所述的方法，其特征在于，所述第一上行信号为以下中的一种：
    随机接入前导码、专用的调度请求SR、专用的探测参考信号SRS、媒体接入控制控制元素MAC CE信令或者无线资源控制RRC消息。
  12. 根据权利要求7至11中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收所述第一上行信号的配置信息。
  13. 根据权利要求12所述的方法，其特征在于，所述终端设备接收第一上行信号的配置信息，包括：
    在所述第一下行BWP所对应的下行参考信号的测量结果小于第二阈值的情况下，所述终端设备接收所述第一上行信号的配置信息。
  14. 根据权利要求1至6中任一项所述的方法，其特征在于，若所述终端设备确定从所述第一下行BWP切换至所述第二下行BWP，所述方法还包括：
    在所述终端设备从所述第一下行BWP切换至所述第二下行BWP之后，所述终端设备发送第二上行信号，以指示所述第二下行BWP的信息，和/或，指示所述第二下行BWP对应的上行BWP的信息。
  15. 根据权利要求14所述的方法，其特征在于，所述第二上行信号包括所述第二下行BWP的索引信息和/或所述第二下行BWP对应的上行BWP的索引信息。
  16. 根据权利要求14所述的方法，其特征在于，所述终端设备发送第二上行信号，包括：
    所述终端设备在所述第二下行BWP对应的上行BWP上发送所述第二上行信号。
  17. 根据权利要求14所述的方法，其特征在于，所述终端设备发送第二上行信号，包括：
    所述终端设备根据第二对应关系，在所述第二下行BWP对应的上行BWP上发送所述第二上行信号，其中，所述第二上行信号对应所述第二下行BWP的索引信息，所述第二对应关系为多个上行信息与所述多个下行BWP的索引之间的对应关系，所述多个上行信息包括所述第二上行信号。
  18. 根据权利要求17所述的方法，其特征在于，所述第二对应关系为预设的，或者，所述第二对应关系为网络设备通过信令预先配置的。
  19. 根据权利要求14至18中任一项所述的方法，其特征在于，所述第二上行信号为以下中的一种：
    随机接入前导码、专用的SR、专用的SRS、MAC CE信令或者RRC消息。
  20. 根据权利要求14至19中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收所述第二上行信号的配置信息。
  21. 根据权利要求20所述的方法，其特征在于，所述终端设备接收第二上行信号的配置信息，包括：
    在所述第一下行BWP所对应的下行参考信号的测量结果小于第三阈值的情况下，所述终端设备接收所述第二上行信号的配置信息。
  22. 根据权利要求14至21中任一项所述的方法，其特征在于，所述终端设备从所述第一下行BWP切换至所述第二下行BWP的开始时间与发送所述第二上行信号的开始时间之间间隔第一时长。
  23. 根据权利要求22所述的方法，其特征在于，所述第一时长为预设的，或者，所述第一时长为网络设备通过信令预先配置的。
  24. 根据权利要求1至23中任一项所述的方法，其特征在于，所述多个下行BWP所对应的多个下行参考信号为预设的，或者，所述多个下行BWP所对应的多个下行参考信号为网络设备预先通过信令配置的。
  25. 根据权利要求1至24中任一项所述的方法，其特征在于，所述终端设备测量多个下行BWP所对应的多个下行参考信号，包括：
    所述终端设备周期性测量所述多个下行BWP所对应的多个下行参考信号。
  26. 根据权利要求25所述的方法，其特征在于，所述多个下行BWP所对应的多个下行参考信号的测量周期为预设的，或者，所述多个下行BWP所对应的多个下行参考信号的测量周期为网络设备通过信令预先配置的。
  27. 根据权利要求1至26中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备确定是否进行上行BWP切换。
  28. 根据权利要求27所述的方法，其特征在于，所述终端设备确定是否进行上行BWP切换，包括：
    若所述终端设备确定从所述第一下行BWP切换至所述第二下行BWP，所述终端设备根据第三对应关系，确定从所述第一下行BWP对应的上行BWP切换至所述第二下行BWP对应的上行BWP，其中，所述第三对应关系为所述多个下行BWP与多个上行BWP的对应关系。
  29. 根据权利要求28所述的方法，其特征在于，所述第三对应关系为预设的，或者，所述第三对应关系为网络设备通过信令预先配置的。
  30. 根据权利要求1至29中任一项所述的方法，其特征在于，所述多个下行BWP所对应的多个下行参考信号包括同步信号块或者信道状态信息参考信号CSI-RS。
  31. 一种终端设备，其特征在于，包括：
    处理单元，用于测量多个下行带宽部分BWP所对应的多个下行参考信号；
    所述处理单元还用于根据所述多个下行BWP所对应的多个下行参考信号的测量结果，确定是否从第一下行BWP切换至第二下行BWP，其中，所述第一下行BWP为激活的BWP，所述第一下行BWP和所述第二下行BWP属于所述多个下行BWP。
  32. 根据权利要求31所述的终端设备，其特征在于，所述测量结果包括以下中的至少一种：
    BWP所对应的参考信号接收功率RSRP，BWP所对应的参考信号接收质量RSRQ，BWP所对应的参考信号载波干扰噪声比RS-SINR，BWP所对应的信道质量指示CQI。
  33. 根据权利要求31或32所述的终端设备，其特征在于，所述处理单元具体用于：
    若所述第二下行BWP所对应的下行参考信号的测量结果大于所述第一下行BWP所对应的下行参考信号的测量结果，从所述第一下行BWP切换至所述第二下行BWP。
  34. 根据权利要求31或32所述的终端设备，其特征在于，所述处理单元具体用于：
    若所述第二下行BWP所对应的下行参考信号的测量结果与所述第一下行BWP所对应的下行参考信号的测量结果的差值大于第一阈值，从所述第一下行BWP切换至所述第二下行BWP。
  35. 根据权利要求34所述的终端设备，其特征在于，所述第一阈值为预设的，或者，所述第一阈值为网络设备通过信令预先配置的。
  36. 根据权利要求33至35中任一项所述的终端设备，其特征在于，所述第二下行BWP所对应的下行参考信号的测量结果在所述多个下行BWP中对应的多个下行参考信号的测量结果中最大。
  37. 根据权利要求31至36中任一项所述的终端设备，其特征在于，若所述终端设备确定从所述第一下行BWP切换至所述第二下行BWP，所述终端设备还包括：
    通信单元，用于在所述终端设备从所述第一下行BWP切换至所述第二下行BWP之前，发送第一上行信号，以指示所述第二下行BWP的信息，和/或，指示所述第二下行BWP对应的上行BWP的信息。
  38. 根据权利要求37所述的终端设备，其特征在于，所述第一上行信号包括所述第二下行BWP的索引信息和/或所述第二下行BWP对应的上行BWP的索引信息。
  39. 根据权利要求37所述的终端设备，其特征在于，所述通信单元具体用于：
    根据第一对应关系，在所述第一下行BWP对应的上行BWP上发送所述第一上行信号，其中，所述第一上行信号对应所述第二下行BWP的索引信息，所述第一对应关系为多个上行信息与所述多个下行BWP的索引之间的对应关系，所述多个上行信息包括所述第一上行信号。
  40. 根据权利要求39所述的终端设备，其特征在于，所述第一对应关系为预设的，或者，所述第一对应关系为网络设备通过信令预先配置的。
  41. 根据权利要求37至40中任一项所述的终端设备，其特征在于，所述第一上行信号为以下中的一种：
    随机接入前导码、专用的调度请求SR、专用的探测参考信号SRS、媒体接入控制控制元素MAC CE信令或者无线资源控制RRC消息。
  42. 根据权利要求37至41中任一项所述的终端设备，其特征在于，所述通信单元还用于接收所述第一上行信号的配置信息。
  43. 根据权利要求42所述的终端设备，其特征在于，所述通信单元具体用于：
    在所述第一下行BWP所对应的下行参考信号的测量结果小于第二阈值的情况下，接收所述第一上行信号的配置信息。
  44. 根据权利要求31至36中任一项所述的终端设备，其特征在于，若所述终端设备确定从所述第一下行BWP切换至所述第二下行BWP，所述终端设备还包括：
    通信单元，用于在所述终端设备从所述第一下行BWP切换至所述第二下行BWP之后，发送第二上行信号，以指示所述第二下行BWP的信息，和/或，指示所述第二下行BWP对应的上行BWP的信息。
  45. 根据权利要求44所述的终端设备，其特征在于，所述第二上行信号包括所述第二下行BWP的索引信息和/或所述第二下行BWP对应的上行BWP的索引信息。
  46. 根据权利要求44所述的终端设备，其特征在于，所述通信单元具体用于：
    在所述第二下行BWP对应的上行BWP上发送所述第二上行信号。
  47. 根据权利要求44所述的终端设备，其特征在于，所述通信单元具体用于：
    根据第二对应关系，在所述第二下行BWP对应的上行BWP上发送所述第二上行信号，其中，所述第二上行信号对应所述第二下行BWP的索引信息，所述第二对应关系为多个上行信息与所述多个下行BWP的索引之间的对应关系，所述多个上行信息包括所述第二上行信号。
  48. 根据权利要求47所述的终端设备，其特征在于，所述第二对应关系为预设的，或者，所述第二对应关系为网络设备通过信令预先配置的。
  49. 根据权利要求44至48中任一项所述的终端设备，其特征在于，所述第二上行信号为以下中的一种：
    随机接入前导码、专用的SR、专用的SRS、MAC CE信令或者RRC消息。
  50. 根据权利要求44至49中任一项所述的终端设备，其特征在于，所述通信单元还用于接收所述第二上行信号的配置信息。
  51. 根据权利要求50所述的终端设备，其特征在于，所述通信单元具体用于：
    在所述第一下行BWP所对应的下行参考信号的测量结果小于第三阈值的情况下，接收所述第二上行信号的配置信息。
  52. 根据权利要求44至51中任一项所述的终端设备，其特征在于，所述终端设备从所述第一下行BWP切换至所述第二下行BWP的开始时间与发送所述第二上行信号的开始时间之间间隔第一时长。
  53. 根据权利要求52所述的终端设备，其特征在于，所述第一时长为预设的，或者，所述第一时长为网络设备通过信令预先配置的。
  54. 根据权利要求31至53中任一项所述的终端设备，其特征在于，所述多个下行BWP所对应的多个下行参考信号为预设的，或者，所述多个下行BWP所对应的多个下行参考信号为网络设备预先通过信令配置的。
  55. 根据权利要求31至54中任一项所述的终端设备，其特征在于，所述处理单元具体用于：
    周期性测量所述多个下行BWP所对应的多个下行参考信号。
  56. 根据权利要求55所述的终端设备，其特征在于，所述多个下行BWP所对应的多个下行参考信号的测量周期为预设的，或者，所述多个下行BWP所对应的多个下行参考信号的测量周期为网络设备通过信令预先配置的。
  57. 根据权利要求31至56中任一项所述的终端设备，其特征在于，所述处理单元还用于确定是否进行上行BWP切换。
  58. 根据权利要求57所述的终端设备，其特征在于，所述处理单元具体用于：
    若所述终端设备确定从所述第一下行BWP切换至所述第二下行BWP，根据第三对应关系，确定从所述第一下行BWP对应的上行BWP切换至所述第二下行BWP对应的上行BWP，其中，所述第三对应关系为所述多个下行BWP与多个上行BWP的对应关系。
  59. 根据权利要求58所述的终端设备，其特征在于，所述第三对应关系为预设的，或者，所述第三对应关系为网络设备通过信令预先配置的。
  60. 根据权利要求31至59中任一项所述的终端设备，其特征在于，所述多个下行BWP所对应的多个下行参考信号包括同步信号块或者信道状态信息参考信号CSI-RS。
  61. 一种终端设备，其特征在于，包括：处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至30中任一项所述的方法。
  62. 一种装置，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述装置的设备执行如权利要求1至30中任一项所述的方法。
  63. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至30中任一项所述的方法。
  64. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至30中任一项所述的方法。
  65. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至30中任一项所述的方法。
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