WO2022036706A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2022036706A1
WO2022036706A1 PCT/CN2020/110578 CN2020110578W WO2022036706A1 WO 2022036706 A1 WO2022036706 A1 WO 2022036706A1 CN 2020110578 W CN2020110578 W CN 2020110578W WO 2022036706 A1 WO2022036706 A1 WO 2022036706A1
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WO
WIPO (PCT)
Prior art keywords
bwp
information
terminal device
target period
network device
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Application number
PCT/CN2020/110578
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English (en)
French (fr)
Inventor
薛剑韬
魏璟鑫
杨飞
东宁
吴向春
Original Assignee
华为技术有限公司
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.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2020/110578 priority Critical patent/WO2022036706A1/zh
Priority to CN202080014871.2A priority patent/CN114391280B/zh
Publication of WO2022036706A1 publication Critical patent/WO2022036706A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication, and more particularly, to a communication method and a communication device.
  • the frequency of the fifth generation (the 5th Generation, 5G) communication system is divided into two parts: FR1 (low frequency part) and FR2 (high frequency part).
  • the frequency of FR1 is less than 6 gigahertz (GHz) and the bandwidth can be 5 megahertz (MHz), 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 40MHz, 50MHz, 60MHz, 80MHz and 100MHz;
  • the frequency of FR2 is greater than 6GHz and the bandwidth It can be 50MHz, 100MHz, 200MHz and 400MHz etc.
  • the bandwidth of 5G can be as small as 5MHz and as large as 400MHz. If all user equipment (user equipment, UE) are required to support the maximum bandwidth, that is, to support a bandwidth of 400 MHz, the UE will have high power consumption.
  • UE user equipment
  • a bandwidth part (BWP) technology is proposed in the new radio interface (NR), in which the base station can configure the BWP for the UE, and the UE uses the BWP configured by the base station to receive information, thereby reducing the power consumption of the UE.
  • BWP bandwidth part
  • the present application provides a communication method and a communication device in a communication system, which can reduce the power consumption of the UE.
  • the present application provides a communication method.
  • the communication method includes: the terminal device determines a second partial bandwidth BWP, the second BWP is smaller than the first BWP, the first BWP is the BWP determined by the network device for the terminal device; the terminal device is in the first BWP A target period communicates with the network device using the second BWP, and the first target period includes a period without downlink data from the terminal device.
  • the terminal adjusts the BWP autonomously, and the adjusted BWP (ie the second BWP) is smaller than the BWP (ie the first BWP) determined by the network device for it.
  • the terminal uses a smaller BWP for communication, which can save more power consumption, thereby making the terminal more energy-efficient.
  • the second BWP is a downlink BWP.
  • the terminal device using the second BWP to communicate with the network device during the first target period includes: when the terminal device determines that there is no downlink data scheduling in the first target period, using the first target period The second BWP receives downlink information.
  • the terminal when it determines that there is no downlink data scheduling in a certain target time period (ie, the first target time period), it can adjust itself to obtain a second BWP smaller than the first BWP, and use the second BWP to receive downlink signals , so that power consumption can be saved during downlink transmission.
  • a certain target time period ie, the first target time period
  • the second BWP includes: the bandwidth where the control resource set CORESET of the physical downlink control channel PDCCH is located, and the synchronization signal of the serving cell of the terminal device The bandwidth where the block SSB is located, the bandwidth where the tracking reference information TRS is located, and the bandwidth where the channel state information CSI-reference signal RS is located.
  • the first BWP includes a downlink initial BWP configured by the network device for the terminal device.
  • the downlink BWP independently adjusted by the terminal is smaller than the initial downlink BWP configured for it by the network device.
  • the terminal device uses the second BWP to receive downlink information during the first target period, including: the terminal device determining that the network device does not transmit one or more information among CSI-RS, SSB, TSR and PDCCH of the serving cell of the terminal device in the first target time period, and use the first target time period
  • the second BWP receives downlink information.
  • the terminal automatically adjusts the downlink BWP to the second BWP only when it is determined that there is no downlink data scheduling and no CSI-RS, SSB, TSR and/or PDCCH transmission. This can save power consumption while avoiding the impact of BWP reduction on the reception of CSI-RS, SSB, TSR and/or PDCCH.
  • the method further includes: when the terminal device determines that it needs to receive the first or more kinds of information, using the network device to The BWP configured by the terminal device receives the one or more kinds of information.
  • the terminal uses the smaller second BWP to receive downlink signals, if the terminal determines that it will receive CSI-RS, SSB, TSR and/or PDCCH, the terminal adjusts the downlink BWP to the BWP configured by the network device for it . In this way, normal reception of CSI-RS, SSB, TSR and/or PDCCH can be guaranteed.
  • the method further includes: determining, by the terminal equipment, that the downlink information includes CSI-RS, the terminal equipment In the case of one or more kinds of information among the SSB, TSR and PDCCH of the serving cell, the one or more kinds of information are discarded.
  • the terminal receives CSI-RS, SSB, TSR and/or PDCCH using the smaller second BWP, in order to ensure the reliability of CSI-RS, SSB, TSR and/or PDCCH, These signals are received on the BWP, but the received signals are discarded.
  • the downlink information includes CSI-RS
  • the method further includes: the terminal device is based on the The downlink information sends CSI feedback information to the network device.
  • the terminal may receive CSI-RS on the second smaller BWP, and perform CSI feedback based on the received CSI-RS.
  • the second BWP is an uplink BWP.
  • the terminal device using the second BWP to communicate with the network device during the first target period includes: the terminal device using the second BWP to send an uplink to the network device during the first target period information, and the second BWP only includes the bandwidth where the uplink information is located.
  • the terminal can determine the second BWP according to the BWP required by the uplink information that it currently needs to send, so that the uplink power consumption can be saved as much as possible.
  • the terminal device uses the second BWP to communicate with the network device during the first target period, including: the terminal device If it is determined that the difference between the second BWP and the BWP configured by the network device for the terminal device is greater than or equal to a preset bandwidth threshold, use the second BWP and the The network device communicates.
  • the terminal uses the second BWP for communication.
  • the second BWP independently adjusted by the terminal is close to the first BWP, that is, the terminal still performs BWP switching when power consumption can be ignored, that is, unnecessary BWP switching can be reduced.
  • the terminal device uses the second BWP to communicate with the network device during the first target period, including: the When the terminal device determines that the number of times of changing the BWP within a preset time period is less than or equal to a preset number of times threshold, it uses the second BWP to communicate with the network device during the first target period, and the first target The time period is within the preset time period.
  • the terminal device is in an early wake-up stage of discontinuously receiving data DXR.
  • the terminal device uses the second BWP to communicate with the network device during the first target period, including: the terminal device determining the last time slot of the early wake-up phase and the early wake-up phase In the case that the time slot difference between the first time slots of the next first duration is greater than or equal to a preset time slot difference threshold, the second BWP is used to communicate with the network device.
  • the terminal when the terminal determines that the early wake-up phase is about to end, it can adjust the BWP involuntarily, because even if the terminal performs BWP adjustment at this time, the terminal will soon switch to the BWP configured by the network device, so the switch is actually It is not meaningful. Therefore, this implementation can avoid unnecessary switching.
  • the duration of the first target period may be one or more time slots.
  • the present application provides a communication apparatus, where the apparatus includes a module for executing the method in the first aspect or any one of the implementation manners.
  • a communication device in a third aspect, includes: a memory, a processor and a receiver; the memory is used for storing a program; the processor is used for executing the program stored in the memory; When the program is executed, the processor and the transceiver are configured to execute the method in the first aspect or any one of the implementation manners.
  • a computer-readable medium stores program code for device execution, where the program code is used to execute the method in the first aspect or any one of the implementation manners thereof.
  • a computer program product containing instructions, when the computer program product is run on a computer, the computer program product causes the computer to execute the method in the first aspect or any one of the implementation manners.
  • a sixth aspect provides a chip, the chip includes a processor and a data interface, the processor reads an instruction stored in a memory through the data interface, and executes the first aspect or any one of the implementations. method.
  • the chip may further include a memory, in which instructions are stored, the processor is configured to execute the instructions stored in the memory, and when the instructions are executed, the The processor is configured to execute the method in the first aspect or any one of the implementation manners thereof.
  • a terminal device comprising: a memory for storing a program; a processor for executing the program stored in the memory, and when the program stored in the memory is executed, the processing The device is configured to execute the method in the first aspect or any one of the implementation manners thereof.
  • a communication system includes the terminal device in the seventh aspect.
  • the present application provides a communication method.
  • the communication method includes: a terminal device receives partial bandwidth BWP configuration information from a network device, the BWP configuration information is used to instruct the terminal device to configure a first BWP; the terminal device uses the first BWP to receive information from the network device.
  • the terminal device uses the second BWP to receive the second downlink information from the network device during the first target period, wherein the second BWP is smaller than the first BWP, the first
  • the target period includes a period in which the network device does not send the downlink data of the terminal device, and before the first target period, the network device does not send first handover indication information to the terminal device, and the first handover indication The information is used to instruct the terminal device to switch the first BWP.
  • the terminal device when the terminal device has no downlink data, the BWP used by the terminal device is smaller than the BWP configured by the network device, so the energy consumption of the terminal may be saved more.
  • the terminal device switches autonomously without receiving the BWP switching indication information of the network device, so the signaling overhead can be reduced while saving the energy consumption of the terminal.
  • the fact that the network device does not send BWP handover indication information to the terminal device before the first target period means that the terminal device does not receive BWP handover indication information before starting to use the first BWP this time to the first target period.
  • the second BWP includes one or more of the following bandwidths: the bandwidth where the control resource set CORESET of the physical downlink control channel PDCCH is located, the serving cell of the terminal device The bandwidth where the synchronization signal block SSB is located, the bandwidth where the tracking reference information TRS is located, or the bandwidth where the channel state information CSI-reference signal RS is located.
  • the terminal because the terminal only receives information on the bandwidth where the CORESET including the PDCCH is located, the bandwidth where the SSB is located, the bandwidth where the TRS is located, and/or the bandwidth where the CSI-RS is located, it can not only ensure the reception of these control information, but also The energy consumption of the terminal can be saved.
  • the second BWP includes a downlink initial BWP configured by the network device for the terminal device.
  • the terminal device autonomously adjusts to the downlink initial BWP, and receives downlink information on the downlink initial BWP, so the energy consumption of the terminal can be saved.
  • the first target period includes a period during which the network device does not send one or more of the following information: CSI-RS , the SSB, TSR or PDCCH of the serving cell of the terminal device.
  • the terminal device switches from the first BWP to the second BWP, so that the CSI-RS can be guaranteed. , the reception reliability of the SSB, TSR or PDCCH of the serving cell of the terminal device.
  • the method further includes: the terminal device uses the first BWP to receive downlink information from the network device during the second target time period,
  • the second target period includes a period during which the network device transmits one or more information among CSI-RS, SSB, TSR, and PDCCH of the serving cell of the terminal device, and the second target period is located in the first After the target period, and within the second target period, there is no downlink data of the terminal device.
  • the terminal device switches from the second BWP to the first BWP to ensure the CSI-RS, the The reception reliability of the SSB, TSR or PDCCH of the serving cell.
  • the first target period includes the network device sending the CSI-RS, the serving cell of the terminal device The time period of one or more of the SSB, TSR and PDCCH information.
  • the method further includes: discarding, by the terminal device, the one or more pieces of information received during the first target period.
  • the terminal device even if the terminal device receives one or more kinds of the above information within the first target period, the information is not used, so that the reliability of the terminal of the terminal device can be guaranteed.
  • the first target period includes a period during which the network device sends the CSI-RS, wherein the method The method further includes: sending, by the terminal device, the CSI feedback information of the CSI-RS in the second BWP to the network device.
  • the terminal device uses the second BWP to receive the CSI-RS, it only feeds back the feedback information of the CSI-RS received by the second BWP to the network device to ensure the accuracy of the feedback information, thereby improving the reliability of communication .
  • the second downlink information includes downlink data scheduling information, and the downlink data scheduling information
  • the method further includes: the terminal device uses the first BWP to receive third downlink information of the terminal device in the third target time period.
  • the terminal device switches from the second BWP to the first BWP to ensure correct reception of the downlink data.
  • the method further includes: the terminal device uses a third BWP to send a message to the network device Send the first uplink information; the terminal device sends the second uplink information to the network device using a fourth BWP during the fourth target period, the fourth BWP is smaller than the third BWP, and the number of times before the fourth target period is The network device does not send second handover indication information to the terminal device, and the bandwidth occupied by the second uplink information is smaller than the bandwidth occupied by the first uplink information, and the second handover indication information is used to indicate to the terminal The device switches the third BWP.
  • the network device Before the fourth target period, the network device has not sent the BWP switching indication information to the terminal device, which means that the network device has not sent the second BWP to the terminal device after using the third BWP this time to before the fourth target period. Toggle information.
  • the terminal device uses the fourth BWP that only includes the bandwidth where the uplink information is located to send the uplink information. In this way, the energy consumption of the terminal can be saved as much as possible.
  • the difference between the first BWP and the second BWP is greater than or equal to Preset bandwidth threshold. In this way, useless or insignificant BWP switching can be avoided.
  • the terminal device uses the second BWP to receive the received data during the first target period.
  • the number of times that the terminal device changes the BWP within a preset time period is less than or equal to a preset number of times threshold. In this way, frequent handover of the terminal device can be avoided, so as to avoid wasting the resources of the terminal device.
  • the first target period includes the discontinuous reception data DRX of the terminal device. Early wake-up phase.
  • the difference between the last time slot of the early wake-up phase and the first time slot of the first duration after the early wake-up phase When the time slot difference between the two is greater than or equal to the preset time slot difference threshold. In this way, BWP switching with less energy saving effect can be avoided, thereby avoiding waste of resources of the terminal device.
  • the first downlink information includes PDCCH, wherein the first target time period The first symbol within is located after the symbol occupied by the PDCCH included in the first downlink information. In this way, the radio frequency stabilization time does not affect the reception of the PDCCH.
  • the first time slot in the first target period does not include one of the following or multiple time slots: the time slot where the SSB of the serving cell of the terminal device is located, the time slot where the measurement timing configuration information of the SSB of the serving cell of the terminal device is located, or the time slot where the TRS is located.
  • the present application provides a communication device.
  • the communication device includes: a communication module configured to receive partial bandwidth BWP configuration information from a network device, where the BWP configuration information is used to instruct the communication device to configure a first BWP; the communication module is further configured to use the first BWP.
  • a BWP receives the first downlink information from the network device; the communication module is further configured to use the second BWP to receive the second downlink information from the network device during the first target period, wherein the first target The period includes a period in which the network device does not send downlink data of the terminal device, and before the first target period, the network device does not send first handover indication information to the terminal device, the first handover indication information It is used to instruct the terminal device to switch the first BWP.
  • the first BWP includes one or more of the following bandwidths: the bandwidth where the control resource set CORESET of the physical downlink control channel PDCCH is located, the serving cell of the communication device The bandwidth where the synchronization signal block SSB is located, the bandwidth where the tracking reference information TRS is located, and the bandwidth where the channel state information CSI-reference signal RS is located.
  • the second BWP includes a downlink initial BWP configured by the network device for the communication apparatus.
  • the first target period includes a period during which the network device does not send one or more of the following information: CSI-RS , the SSB, TSR and PDCCH of the serving cell of the communication device.
  • the communication module is further configured to: receive downlink information from the network device by using the first BWP during the second target period, and the The second target period includes a period during which the network device transmits one or more information among CSI-RS, SSB, TSR and PDCCH of the serving cell of the communication apparatus, and the second target period is located in the first target period After that, there is no downlink data of the communication device within the second target period.
  • the first target period includes the network device sending the CSI-RS, the serving cell of the communication apparatus The time period of one or more of the SSB, TSR and PDCCH information.
  • the communication module is further configured to discard the one or more kinds of information.
  • the first target period includes a period during which the network device sends the CSI-RS, wherein the communication
  • the module is further configured to send the CSI feedback information of the CSI-RS in the second BWP to the network device.
  • the second downlink information includes downlink data scheduling information, and the downlink data scheduling information
  • the communication module is further configured to use the first BWP to receive the third downlink information of the communication device in the third target period.
  • the communication module is further configured to: use a third BWP to send the first to the network device. Uplink information; use the fourth BWP to send the second uplink information to the network device during the fourth target period, and the fourth BWP is smaller than the third BWP, and the network device does not have any information before the fourth target period Send second handover indication information to the terminal device, and the bandwidth occupied by the second uplink information is smaller than the bandwidth occupied by the first uplink information, and the second handover indication information is used to instruct the terminal device to switch the Third BWP.
  • the difference between the first BWP and the second BWP is greater than or equal to Preset bandwidth threshold.
  • the communication device uses the second BWP to receive the received data during the first target period.
  • the number of times that the communication device changes the BWP within a preset time period is less than or equal to a preset number of times threshold.
  • the first target period includes the discontinuous reception data DXR of the communication device. Early wake-up phase.
  • the difference between the last time slot of the early wake-up phase and the first time slot of the first duration after the early wake-up phase is greater than or equal to the preset time slot difference threshold.
  • the first downlink information includes PDCCH, wherein the first target period The first symbol within is located after the symbol occupied by the PDCCH included in the first downlink information.
  • the first time slot in the first target period does not include one of the following or multiple time slots: the time slot where the SSB of the serving cell of the communication device is located, the time slot where the measurement timing configuration information of the SSB of the serving cell of the communication device is located, or the time slot where the TRS is located.
  • a communication device comprising: a memory, a processor and a receiver; the memory is used for storing a program; the processor is used for executing the program stored in the memory; when the memory stores a program When the program is executed, the processor and the transceiver are configured to execute the method in the ninth aspect or any one of the implementation manners.
  • a twelfth aspect provides a computer-readable medium, where the computer-readable medium stores program code for device execution, where the program code is used to execute the method in the ninth aspect or any one of the implementation manners thereof.
  • a thirteenth aspect provides a computer program product containing instructions, which, when the computer program product runs on a computer, causes the computer to execute the method of the ninth aspect or any one of the implementation manners.
  • a fourteenth aspect provides a chip, the chip includes a processor and a data interface, the processor reads an instruction stored in a memory through the data interface, and executes the ninth aspect or any one of the implementation manners. Methods.
  • the chip may further include a memory, in which instructions are stored, the processor is configured to execute the instructions stored in the memory, and when the instructions are executed, the The processor is configured to execute the method in the ninth aspect or any one of the implementation manners thereof.
  • a fifteenth aspect provides a terminal device, the terminal device includes: a memory for storing a program; a processor for executing the program stored in the memory, when the program stored in the memory is executed, the The processor is configured to execute the method in the ninth aspect or any one of the implementation manners.
  • a sixteenth aspect provides a communication system including the terminal device of the fifteenth aspect.
  • FIG. 1 is a schematic structural diagram of a communication system to which the methods and apparatuses of the embodiments of the present application can be applied.
  • FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of adjusting BWP according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a communication device according to another embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a computer program product 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
  • long term evolution long term evolution
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS general mobile communication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal device in the embodiments of the present application may also be referred to as UE, mobile station, access terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, terminal, wireless communication device, user agent, or user equipment etc., which can be specifically a station (station, ST) in a WLAN, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital processing (personal digital assistant, PDA), handheld devices with wireless communication capabilities, computing devices, other processing devices connected to wireless modems, in-vehicle devices, wearable devices, mobile stations in future 5G networks, and future evolved PLMN networks. Any of terminal equipment, etc.
  • the network device in this embodiment of the present application may be a device for communicating with a terminal, and may specifically be an access point (AP) in a wireless local area network (wireless local Area networks, WLAN), a global system for mobile communications (global system for mobile communication, GSM) or code division multiple access (code division multiple access, CDMA) in the base transceiver station (base transceiver station, BTS), wideband code division multiple access (wideband code division multiple access, WCDMA) in the base transceiver station (base transceiver station, BTS) Base station (nodeB, NB), evolved base station (evolutional node B, eNB) in LTE system, relay station or access point, in-vehicle equipment, wearable equipment, access network equipment in future 5G network and future evolution of public land Any of the access network devices in the mobile network (public land mobile network, PLMN).
  • AP access point
  • WLAN wireless local Area networks
  • GSM global system for mobile communication
  • CDMA code division multiple access
  • a plurality in the embodiments of the present application refers to two or more than two, and other quantifiers are similar.
  • "/" describes the association relationship of the associated objects, indicating that there can be three kinds of relationships, for example, A/B, it can indicate that A exists alone, A and B exist at the same time, and B exists alone.
  • FIG. 1 is a schematic structural diagram of a communication system to which the methods and apparatuses of the embodiments of the present application can be applied.
  • the communication system may include a base station 110 and a UE 120.
  • UE 120 supports BWP technology, that is, UE 120 can communicate with base station 110 through BWP.
  • the BWP refers to a part of the bandwidth of a carrier. For example, for a carrier with a bandwidth of 100MHz, 20MHz of which is designated as a BWP.
  • the (radio frequency and/or baseband) bandwidth that the UE 120 can support may be smaller than the maximum carrier bandwidth specified by the system or not higher than a specific frequency bandwidth, and the maximum carrier bandwidth specified by the system may also be referred to as the system bandwidth.
  • the UE uses a BWP smaller than the system bandwidth to communicate with the base station, which can reduce the working power consumption of the UE.
  • the BWP of the UE can be 100 MHz.
  • the BWP used by the UE can be configured by the base station, but the BWP configured by the base station is usually very large, and additional signaling overhead is required for the base station to configure the BWP.
  • the base station does not frequently change the BWP of the UE. Therefore, the UE always Communication according to the BWP configured by the base station still requires the UE to waste a large amount of power consumption.
  • the UE can actually only detect the physical downlink control channel (PDCCH) and other pilot signals, and does not need to receive data according to the BWP configured by the base station. In this case, the UE still receives data according to the BWP configured by the base station, which will waste more power consumption.
  • PDCCH physical downlink control channel
  • the present application proposes a method for the UE to adjust the BWP autonomously, so as to save the power consumption of the UE.
  • the UE autonomously adjusts the BWP can be understood as the UE decides the BWP to communicate with the network device by itself according to the current communication requirements, and uses the BWP to communicate with the network device instead of using the BWP configured by the base station.
  • the terminal autonomously reduces the downlink BWP (or uses a BWP smaller than the BWP configured by the base station to receive downlink information), and when there is a When data is scheduled, it is restored to the BWP configured by the network device.
  • the relevant calculation operations and reporting operations for the UE to communicate may be performed based on signals received within the autonomously adjusted BWP.
  • the UE may perform channel state information (channel state information, CSI) feedback according to the pilot signal received in the autonomously adjusted BWP.
  • CSI channel state information
  • the UE can adjust the downlink BWP to the BWP configured by the network device.
  • the UE can autonomously reduce the downlink BWP during the early wake-up phase of discontinuous data reception (DRX).
  • DRX discontinuous data reception
  • FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application. As shown in FIG. 2, the communication method may include S210, S220 and S230.
  • the terminal device receives BWP configuration information from the network device, where the BWP configuration information is used to instruct the terminal device to configure the first BWP.
  • An example of the terminal device in this embodiment is the UE 120 in FIG. 1
  • an example of the network device is the base station 110 in FIG. 1 .
  • the first BWP may include: an initial BWP configured by the network device for the terminal device when the terminal device accesses the network device, and the initial BWP may include an uplink initial BWP or a downlink BWP; the terminal device accesses the network device After that, in the connected state, the network device configures one or more BWPs for the terminal device.
  • the first BWP may also include a default (default) BWP configured by the network device for the terminal device.
  • the terminal device uses the first BWP to receive the first downlink information from the network device.
  • the network device may configure multiple BWPs for the terminal device, and then the network device may receive downlink information by instructing the terminal device which BWP among the multiple BWPs is activated.
  • the BWP currently activated on the terminal device is referred to as the first BWP.
  • the terminal device receives downlink information sent by the network device at the first BWP, such as downlink control information, where the downlink control information may include downlink data scheduling information.
  • the downlink data scheduling information may be carried on the PDCCH.
  • the downlink information currently received by the terminal device using the first BWP is referred to as the first downlink information
  • the terminal device uses a second BWP to receive second downlink information from the network device during a first target period, where the second BWP is smaller than the first BWP, and the first target period includes the The network device does not send the downlink data of the terminal device during the period, and before the first target period, the network device does not send first handover indication information to the terminal device, where the first handover indication information is used to indicate the The terminal device switches the first BWP.
  • the network device may send the downlink data scheduling information of one or more terminal devices on the first BWP.
  • the terminal device When the terminal device is in the connected state, it may detect its own downlink data scheduling information on the first BWP, and according to the The detection result determines whether the network device schedules its own downlink data.
  • the terminal device performs blind detection on the first BWP to detect whether there is scheduling information of its own downlink data. If the terminal device does not detect its own downlink data scheduling information on the first BWP, the terminal device can determine The first downlink data scheduling information on the first BWP does not schedule its own downlink data; if the terminal device detects its own downlink data scheduling information on the first BWP, but the downlink data scheduling information does not schedule downlink data, Then the terminal device can determine that the first downlink data scheduling information on the first BWP does not schedule its own downlink data.
  • the terminal device can use the smaller second BWP to receive the downlink information sent by the network device during the first target period.
  • the downlink information is referred to as the first BWP. 2. Downlink information.
  • the first target period may be a certain time slot in the next communication process between the terminal device and the network device.
  • the second BWP is a BWP that is independently determined or adjusted by the terminal device.
  • the behavior that the terminal device uses the second BWP smaller than the first BWP to receive downlink information is referred to as the terminal device autonomously shrinking the BWP.
  • the BWP determined by the network device for the terminal device can be understood as: if the network device uses the existing method to determine the BWP of the first target period for the terminal device, the network device can determine the BWP for the terminal device.
  • the second BWP is a BWP autonomously determined or adjusted by the terminal, which can be understood as the second BWP is not a BWP configured by the base station for the terminal.
  • the UE uses the second BWP to communicate with the base station, and uses the first BWP to communicate with the UE. Compared with base station communication, more power consumption of UE can be reduced without consuming more signaling.
  • the UE can use the first BWP to receive information; when the base station has no data scheduling for a long time, The UE autonomously adjusts the BWP, and uses the adjusted BWP (ie, the second BWP) to receive information.
  • a BWP ie, the first BWP
  • the UE autonomously adjusts the BWP, and uses the adjusted BWP (ie, the second BWP) to receive information.
  • the UE can resume to use the BWP (ie, the first BWP) configured by the base station to receive information.
  • the BWP ie, the first BWP
  • the terminal device when the terminal device uses the second downlink data scheduling information received by the second BWP to schedule downlink data of the terminal device in the second target period, the terminal device may use the first BWP in the second target period Receive second downlink information of the terminal device.
  • the terminal device may reduce the BWP to a second BWP that only includes the bandwidth where the control resource set (CORESET) of the PDCCH is located, and the synchronization signal of the serving cell of the terminal device.
  • the bandwidth where the block (synchronization signal and PBCH block, SSB) is located the bandwidth where the tracking reference signal (TRS) is located, and the bandwidth where the CSI-reference signal (reference signal, RS) is located, wherein , PBCH is the abbreviation of physical broadcast channel (physical broadcast channel).
  • the terminal device can immediately restore to the BWP (ie, the first BWP) configured by the base station, and locks for a period of time without enabling the function of the terminal device to adjust the downlink BWP autonomously.
  • all calculation processing and reporting processing performed by the terminal device may be based on the use of the self-adjusted second BWP. signal to execute.
  • the terminal device After the terminal device autonomously reduces the BWP, as an example, if the reduced second BWP includes the bandwidth where the CSI-RS is located, the terminal device may perform CSI feedback based on the pilot signal received in the second BWP. Or it can be said that when the first target period includes CSI-RS, or when the first target period includes the period during which the network device sends the CSI-RS, the terminal device sends the network device to the second CSI feedback information of the CSI-RS received in the BWP.
  • the terminal device After the terminal device automatically reduces the BWP, as another example, whenever it needs to receive a pilot signal based on which CSI feedback is performed, the terminal device adjusts the downlink BWP to the BWP (ie, the first BWP) configured by the base station. In other words, the terminal device uses the first BWP to receive downlink information from the network device in a second target period after the first target period, where the second target period includes the network device sending CSI - Period of RS.
  • the BWP the BWP configured by the base station.
  • the terminal device uses the first BWP to receive downlink information from the network device in a second target period after the first target period, where the second target period includes the network device sending CSI - Period of RS.
  • the terminal device can reduce the uplink BWP autonomously, for example, reduce the uplink BWP to be smaller than the uplink BWP configured for it by the network device.
  • the terminal device may make the adjusted uplink BWP (ie, the second BWP) only include the bandwidth occupied by the signal to be sent by the terminal device in the first target time period.
  • the terminal device may autonomously adjust the uplink BWP in each time slot, so that the uplink BWP of each time slot may only include the bandwidth occupied by the signal to be sent by the terminal device in the time slot.
  • the terminal device can follow the 20 RBs. Generating a baseband signal and sending the baseband signal can save a lot of bandwidth and, in turn, a lot of power consumption.
  • the time at which the terminal performs BWP handover may be pre-configured. For example, it may be pre-agreed to start switching the downlink BWP to the first BWP or to the second BWP after the PDCCH symbol. For example, the terminal device may start receiving downlink signals using the first BWP after the PDCCH symbol.
  • the first downlink information includes a PDCCH, wherein the first symbol in the first target period is located after the symbol occupied by the PDCCH included in the first downlink information.
  • the radio frequency stabilization time of the terminal device after switching the BWP does not affect the reception of the PDCCH, thereby ensuring the reliability of the communication of the terminal device.
  • the time of the BWP handover (for example, the start time of the first target time period) will be within the transmission time of the SSB of the serving cell of the terminal device, or within the transmission time of the SMTC used for measurement , or within the TRS burst time, if the terminal device switches the first BWP to the second BWP, the terminal device may abandon the handover, that is, the terminal device may not perform the handover; otherwise, if the terminal device If the second BWP is switched to the first BWP, the terminal device can perform this switching.
  • SMTC is the abbreviation of SSB-MTC (measurement timing configurations).
  • the first time slot in the first target period does not include one or more of the following time slots: the time slot where the SSB of the serving cell of the terminal device is located, the time slot of the serving cell of the terminal device The time slot where the measurement timing configuration information of the SSB is located, and the time slot where the TRS is located.
  • the first time slot in the first target period does not include the time slot where the SSB of the serving cell of the terminal device is located, and the time slot where the measurement timing configuration information of the SSB of the serving cell of the terminal device is located.
  • the terminal device switches from the first BWP to the second BWP only when one or more of the time slots where the TRS is located.
  • an example where the time of the BWP handover is within the transmission time of the SSB of the serving cell of the terminal device is: the time slot where the time of the BWP handover is located is any time slot where the 4 symbols of the SSB are located.
  • An example of when the BWP switching time is located within the TRS burst time (burst) is: the time slot where the BWP switching time is located is the realization where the 4 symbols of the TRS are located, or the time when any symbol between the 4 symbols is located. gap.
  • the terminal device may discard the pilot signal measurement results.
  • the first target period includes a period during which the network device sends one or more information among CSI-RS, SSB, TSR, and PDCCH of the serving cell of the terminal device, and the terminal device discards the the one or more pieces of information received for the first target period.
  • the terminal device discarding the one or more pieces of information received during the first target period may be understood as the terminal device should have received the CSI-RS, the SSB, TSR and the serving cell of the terminal device based on the received CSI-RS. and/or PDCCH performs related operations, but since the CSI-RS, SSB of the serving cell of the terminal device, TSR and/or PDCCH are received on the smaller second BWP, it may not be based on these received CSI - RS, SSB, TSR and/or PDCCH perform related operations.
  • the current SMTC radio resource management (radio resource management, RRM) measurement result may be discarded.
  • the BWP handover occurs within the TRS burst, the timing and frequency offset results of the current TRS burst are discarded.
  • the correlation calculation result of beam management (beam management, BM) and CSI feedback in the current time slot is discarded.
  • the terminal device may first calculate the bandwidth difference between the first BWP and the second BWP. If the bandwidth difference is smaller than the preset threshold value, the terminal device does not perform the BWP handover, but still uses the second BWP for communication. In other words, the terminal device switches from the first BWP to the second BWP only when the difference between the first BWP and the second BWP is greater than or equal to a preset bandwidth threshold.
  • the terminal device may count the number of BWP handovers performed by the terminal device within a preset unit time, and if the number of times exceeds a preset handover threshold, the terminal device may not perform the BWP handover , but can still communicate using the second BWP.
  • the number of times the terminal device changes the BWP within a preset period is less than or equal to a preset threshold of times When the terminal device switches from the first BWP to the second BWP.
  • each DRX consists of a period and a time (OnDuration) to enable reception.
  • OnDuration the terminal device needs to be turned on for a period of time in advance to perform actions such as timing and frequency offset tracking, and the operation of turning on the terminal device in advance is called early wake-up.
  • the terminal device may switch from the first BWP to the second BWP during the early wake-up phase.
  • the first BWP in this scenario may be the initial BWP configured by the network device.
  • the BWP (ie, the second BWP bandwidth) of the radio frequency (RF) signal of the terminal device may be set to include: the bandwidth occupied by the SSB of the serving cell of the terminal device, and/or fall Bandwidth occupied by TRS and/or CSI-RS in the early wake-up phase.
  • the terminal device can read the last time slot of the early wake-up stage, denoted as n1; read the first time slot of OnDuration, denoted as n2. If n2-n1 is greater than or equal to the preset threshold, the terminal device may perform BWP handover in the early wake-up phase, otherwise, BWP handover may not be performed.
  • the terminal device may calculate the bandwidth difference between the second BWP in the early wake-up phase and the first BWP configured by the base station. If the bandwidth difference is less than a preset threshold, the terminal device may not perform BWP handover, that is, Continue to use the BWP configured by the base station.
  • FIG. 4 is a schematic structural diagram of a communication apparatus 400 according to an embodiment of the present application.
  • the apparatus 400 may include a communication module 420 .
  • the communication apparatus 400 may further include a processing module 410
  • the apparatus 400 may be used to perform the relevant steps or operations performed by the terminal device in the method shown in FIG. 2 , for example, the communication module 420 may be used to perform S210 , S220 and S230 .
  • the processing module 410 may be configured to perform internal related operations of the terminal device in S210, S220 and S230, such as determining whether the terminal device needs to switch from the first BWP to the second BWP.
  • the communication module 420 may include a sending module; in other examples, the communication module 420 may include a receiving module; in still other embodiments, the communication module 420 may include a sending module and a receiving module.
  • FIG. 5 is a schematic structural diagram of a communication apparatus 500 according to an embodiment of the present application.
  • the apparatus 500 includes a processor 502 , a communication interface 503 and a memory 504 .
  • the apparatus 500 may be an exemplary structure of the terminal device in FIG. 2 , and the apparatus 500 may also be an exemplary structure of a chip.
  • the memory 504 may be a memory outside the apparatus 500 that can be coupled to the processor 502.
  • the processor 502, the memory 504 and the communication interface 503 can communicate through a bus.
  • Executable code is stored in the memory 504, and the processor 502 reads the executable code in the memory 504 to execute the corresponding method.
  • the memory 504 may also include other software modules required for running processes such as an operating system.
  • the operating system can be LINUX TM , UNIX TM , WINDOWS TM and the like.
  • the executable code in the memory 504 is used to implement the steps or operations performed by the terminal device in FIG. 2; the processor 502 reads the executable code in the memory 504 to perform the steps or operations performed by the terminal device in FIG. 2 .
  • the processor 502 may be a CPU.
  • Memory 504 may include volatile memory, such as random access memory (RAM).
  • RAM random access memory
  • the memory 504 may also include non-volatile memory (2non-volatile memory, 2NVM), such as 2read-only memory (2ROM), flash memory, hard disk drive (HDD) or solid state drive ( solid state disk, SSD).
  • 2NVM non-volatile memory
  • 2ROM read-only memory
  • flash memory such as 2read-only memory (2ROM), flash memory, hard disk drive (HDD) or solid state drive ( solid state disk, SSD).
  • HDD hard disk drive
  • SSD solid state drive
  • example computer program product 600 is provided using signal bearing medium 601 .
  • the signal bearing medium 601 may include one or more program instructions 602 that, when executed by one or more processors, may provide the functions, or portions thereof, described above with respect to the method shown in FIG. 26 .
  • one or more features of S210 and S220 may be undertaken by one or more instructions associated with signal bearing medium 601 .
  • the signal bearing medium 601 may include a computer readable medium 603 such as, but not limited to, a hard drive, a compact disc (CD), a digital video disc (DVD), a digital tape, a memory, a read only memory (read only memory) -only memory, ROM) or random access memory (RAM), etc.
  • the signal bearing medium 601 may include a computer recordable medium 604 such as, but not limited to, memory, read/write (R/W) CDs, R/W DVDs, and the like.
  • signal bearing medium 601 may include communication medium 605, such as, but not limited to, digital and/or analog communication media (eg, fiber optic cables, waveguides, wired communication links, wireless communication links, etc.).
  • the signal bearing medium 601 may be conveyed by a wireless form of communication medium 605 (eg, a wireless communication medium conforming to the IEEE 802.11 standard or other transmission protocol).
  • the one or more program instructions 602 may be, for example, computer-executable instructions or logic-implemented instructions.
  • the aforementioned computing devices may be configured to, in response to program instructions 602 communicated to the computing device via one or more of computer-readable media 603 , computer-recordable media 604 , and/or communication media 605 , Provides various operations, functions, or actions. It should be understood that the arrangements described herein are for illustrative purposes only.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of 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 components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk and other media that can store program codes.

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Abstract

本申请提供了一种通信方法和通信装置。本申请提供的技术方案中，由终端设备自主调整BWP，且该调整后的BWP小于网络设备为其配置的BWP。终端设备使用更小的BWP来与网络设备进行通信，可以在节省信令开销的同时节省终端设备的功耗。

Description

通信方法和通信装置 技术领域
本申请涉及通信领域，并且更具体地，涉及一种通信方法和通信装置。
背景技术
第五代(the 5th Generation，5G)通信系统的频点分为两部分：FR1(低频部分)和FR2(高频部分)。FR1的频点小于6吉赫兹(GHz)，带宽可以是5兆赫兹(MHz)，10MHz，15MHz，20MHz，25MHz，30MHz，40MHz，50MHz，60MHz，80MHz和100MHz；FR2的频点大于6GHz，带宽可以是50MHz，100MHz，200MHz和400MHz等。
5G的带宽最小可以是5MHz，最大能到400MHz。如果要求所有用户设备(user equipment，UE)都支持最大的带宽，即支持400MHz的带宽，则UE会有较高的功耗。
新空口(new radio，NR)中提出了带宽部分(bandwidth part，BWP)技术，其中，基站可以为UE配置BWP，UE使用基站配置的BWP接收信息，从而可以降低UE的功耗。
但是，通信技术的发展对UE在节能和待机时长方面提出了更高的需要。为了能够使得UE更节能，以便待机时长更长，需要进一步降低UE的功耗。因此，如何降低UE的功耗，是亟待解决的技术问题。
发明内容
本申请提供了通信系统中的通信方法和通信装置，可以降低UE的功耗。
第一方面，本申请提供了一种通信方法。该通信方法包括：终端设备确定第二部分带宽BWP，所述第二BWP小于第一BWP，所述第一BWP为所述网络设备为所述终端设备确定的BWP；所述终端设备在第一目标时段使用所述第二BWP与所述网络设备通信，所述第一目标时段包括没有所述终端设备的下行数据的时段。
本申请的方法中，由终端自主调整BWP，且该调整后的BWP(即第二BWP)比网络设备为其确定的BWP(即第一BWP)小。终端使用更小的BWP来进行通信，可以节省更多的功耗，从而使得终端更节能。
结合第一方面，在第一种可能的实现方式中，所述第二BWP为下行BWP。其中，所述终端设备在第一目标时段使用所述第二BWP与所述网络设备通信，包括：所述终端设备在确定所述第一目标时段没有下行数据调度的情况下，使用所述第二BWP接收下行信息。
也就是说，终端在确定某个目标时间段(即第一目标时间段)没有下行数据调度时，可以自行调整得到比第一BWP更小的第二BWP，并使用该第二BWP接收下行信号，从而可以在下行传输过程中节省功耗。
结合第一种可能的实现方式，在第二种可能的实现方式中，所述第二BWP包含：物 理下行控制信道PDCCH的控制资源集CORESET所在的带宽、所述终端设备的服务小区的同步信号块SSB所在的带宽、跟踪参考信息TRS所在的带宽和信道状态信息CSI-参考信号RS所在的带宽。
结合第一种可能的实现方式，在第三种可能的实现方式中，所述第一BWP包含所述网络设备为所述终端设备配置的下行初始BWP。
也就是说，终端自主调整的下行BWP小于网络设备为其配置的下行初始BWP。
结合第一种至第三种中任意一种实现方式，在第四种可能的实现方式中，所述终端设备在第一目标时段使用所述第二BWP接收下行信息，包括：所述终端设备确定所述网络设备在所述第一目标时段没有发送CSI-RS、所述终端设备的服务小区的SSB、TSR和PDCCH中一种或多种信息的情况下，在所述第一目标时段使用所述第二BWP接收下行信息。
也就是说，终端在确定没有下行数据调度，且没有CSI-RS、SSB、TSR和/或PDCCH传输的情况下，才自主将下行BWP调整为第二BWP。这样可以在节省功耗的同时避免BWP的减小对CSI-RS、SSB、TSR和/或PDCCH的接收的影响。
结合第四种可能的实现方式，在第五种可能的实现方式中，所述方法还包括：所述终端设备确定需要接收所述第一或多种信息的情况下，使用所述网络设备为所述终端设备配置的BWP接收所述一种或多种信息。
也就是说，终端使用较小的第二BWP接收下行信号的情况下，若终端确定将要接收CSI-RS、SSB、TSR和/或PDCCH，则终端将下行BWP调整到网络设备为其配置的BWP。这样可以保证CSI-RS、SSB、TSR和/或PDCCH的正常接收。
结合第一种至第三种中任意一种可能的实现方式，在第六种可能的实现方式中，所述方法还包括：所述终端设备确定下行信息中包括CSI-RS、所述终端设备的服务小区的SSB、TSR和PDCCH中一种或多种信息的情况下，丢弃所述一种或多种信息。
也就是说，若终端在使用较小的第二BWP接收到CSI-RS、SSB、TSR和/或PDCCH时，为了保证CSI-RS、SSB、TSR和/或PDCCH的可靠性，不使用在第二BWP上接收到的这些信号，而是将接收到的这些信号丢掉。
结合第一种至第三种中任意一种可能的实现方式，在第七种可能的实现方式中，所述下行信息包括CSI-RS，其中，所述方法还包括：所述终端设备基于所述下行信息向所述网络设备发送CSI反馈信息。
也就是说，终端可以在较小的第二BWP上接收CSI-RS，并基于接收到的CSI-RS进行CSI反馈。
结合第一方面，在第八种可能的实现方式中，所述第二BWP为上行BWP。其中，所述终端设备在第一目标时段使用所述第二BWP与所述网络设备通信，包括：所述终端设备在所述第一目标时段使用所述第二BWP向所述网络设备发送上行信息，并且，所述第二BWP仅包含所述上行信息所在的带宽。
也就是说，终端可以根据自己当前需要发送的上行信息所需的BWP来确定第二BWP，从而可以尽可能多的节省上行功耗。
结合第一方面或上述任意一种实现方式，在第九种可能的实现方式中，所述终端设备在第一目标时段使用所述第二BWP与所述网络设备通信，包括：所述终端设备确定所述 第二BWP与所述网络设备为所述终端设备配置的BWP之间的差值大于或等于预设的带宽阈值的情况下，在所述第一目标时段使用所述第二BWP与所述网络设备通信。
也就是说，终端确定第二BWP之后，在第二BWP与第一BWP之间的差值小于预设阈值的情况下，才使用该第二BWP进行通信。这样可以避免终端自主调整的第二BWP与第一BWP比较接近，即节省功耗可以忽略时，终端依然进行BWP切换的情况发生，即可以减少不必要的BWP切换。
结合第一方面或上述任意一种可能的实现方式，在第十种可能的实现方式中，所述终端设备在第一目标时段使用所述第二BWP与所述网络设备通信，包括：所述终端设备确定在预设时间段内改变BWP的次数小于或等于预设的次数阈值的情况下，在所述第一目标时段使用所述第二BWP与所述网络设备通信，所述第一目标时段位于所述预设时间段内。
这样可以避免终端频繁切换，避免信号的错收、漏收或错发或漏发，从而可以保证通信正常进行。
结合第一方面或上述任意一种可能的实现方式，在第十一种可能的实现方式中，所述终端设备处于非连续接收数据DXR的提前唤醒阶段。
可选地，所述终端设备在第一目标时段使用所述第二BWP与所述网络设备通信，包括：所述终端设备在确定所述提前唤醒阶段的最后一个时隙与所述提前唤醒阶段后第一个持续时间的第一个时隙之间的时隙差大于或等于预设的时隙差阈值的情况下，使用所述第二BWP与所述网络设备通信。
也就是说，终端在确定提前唤醒阶段即将结束时，可以不自主调整BWP，因为即使终端此时进行了BWP调整，终端很快也要切换到网络设备为其配置的BWP，所以该次切换其实意义不大。因此，该实现方式可以避免不必要的切换。
在第一方面或上述任意一种可能的实现方式中，所述第一目标时段的时长可以为一个或多个时隙。
第二方面，本申请提供了一种通信装置，该装置包括用于执行上述第一方面或其中任意一种实现方式中的方法的模块。
第三方面，提供了一种通信装置，该装置包括：存储器、处理器和接收器；所述存储器用于存储程序；所述处理器用于执行所述存储器存储的程序；当所述存储器存储的程序被执行时，所述处理器和所述收发器用于执行第一方面或者其中任意一种实现方式中的方法。
第四方面，提供一种计算机可读介质，该计算机可读介质存储用于设备执行的程序代码，该程序代码用于执行第一方面或其中任意一种实现方式中的方法。
第五方面，提供一种包含指令的计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行上述第一方面或其中任意一种实现方式中的方法。
第六方面，提供一种芯片，所述芯片包括处理器与数据接口，所述处理器通过所述数据接口读取存储器上存储的指令，执行上述第一方面或其中任意一种实现方式中的方法。
可选地，作为一种实现方式，所述芯片还可以包括存储器，所述存储器中存储有指令，所述处理器用于执行所述存储器上存储的指令，当所述指令被执行时，所述处理器用于执行第一方面或其中任意一种实现方式中的方法。
第七方面，提供了一种终端设备，该终端设备包括：存储器，用于存储程序；处理器，用于执行所述存储器存储的程序，当所述存储器存储的程序被执行时，所述处理器用于执行第一方面或者其中任意一种实现方式中的方法。
第八方面，提供一种通信系统，所述通信系统包括第七方面中的终端设备。
第九方面，本申请提供一种通信方法。所述通信方法包括：终端设备接收来自网络设备的部分带宽BWP配置信息，所述BWP配置信息用于指示所述终端设备配置第一BWP；所述终端设备使用第一BWP接收来自所述网络设备的第一下行信息；所述终端设备在第一目标时段使用第二BWP接收来自所述网络设备的第二下行信息，其中，所述第二BWP小于所述第一BWP，所述第一目标时段包括所述网络设备没有发送所述终端设备的下行数据的时段，且所述第一目标时段之前所述网络设备没有向所述终端设备发送第一切换指示信息，所述第一切换指示信息用于指示所述终端设备切换所述第一BWP。
本申请的通信方法中，因为终端设备在没有下行数据时，使用的BWP比网络设备为其配置的BWP小，所以可以能更节省终端的能耗。并且，终端设备是在没有接收到网络设备的BWP切换指示信息的情况下自主切换的，因此可以在节省终端能耗的同时还能降低信令开销。
可以理解，所述第一目标时段之前所述网络设备没有向所述终端设备发送BWP切换指示信息是指终端设备本次使用第一BWP开始至第一目标时段之前没有接收到BWP切换指示信息。
结合第九方面，在第一种可能的实现方式中，所述第二BWP包含以下一种或多种带宽：物理下行控制信道PDCCH的控制资源集CORESET所在的带宽、所述终端设备的服务小区的同步信号块SSB所在的带宽、跟踪参考信息TRS所在的带宽或信道状态信息CSI-参考信号RS所在的带宽。
该实现方式中，因为终端仅在包含PDCCH的CORESET所在的带宽、SSB所在的带宽、TRS所在的带宽和/或CSI-RS所在的带宽上接收信息，所以既能保证这些控制信息的接收，又可以节省终端的能耗。
结合第九方面，在第二种可能的实现方式中，所述第二BWP包含所述网络设备为所述终端设备配置的下行初始BWP。
也就是说，在没有下行数据的情况下，终端设备自主调整到下行初始BWP，在下行初始BWP上接收下行信息，因此可以节省终端的能耗。
结合第九方面或上述任意一种可能的实现方式，在第三种可能的实现方式中，所述第一目标时段包括所述网络设备没有发送以下一种或多种信息的时段：CSI-RS、所述终端设备的服务小区的SSB、TSR或PDCCH。
也就是说，第一目标时段内没有CSI-RS、所述终端设备的服务小区的SSB、TSR和/或PDCCH时，终端设备才从第一BWP切换至第二BWP，这样可以保证CSI-RS、所述终端设备的服务小区的SSB、TSR或PDCCH的接收可靠性。
结合第三种可能的实现方式，在第四种可能的实现方式中，所述方法还包括：所述终端设备在第二目标时段使用所述第一BWP接收来自所述网络设备的下行信息，所述第二目标时段包括所述网络设备发送CSI-RS、所述终端设备的服务小区的SSB、TSR和PDCCH中一种或多种信息的时段，所述第二目标时段位于所述第一目标时段之后，且在所述第二 目标时段内没有所述终端设备的下行数据。
也就是说，在有CSI-RS、所述终端设备的服务小区的SSB、TSR和/或PDCCH时，终端设备从第二BWP切换至第一BWP，以保证CSI-RS、所述终端设备的服务小区的SSB、TSR或PDCCH的接收可靠性。
结合第九方面或第一种或第二种可能的实现方式，在第五种可能的实现方式中，所述第一目标时段包括所述网络设备发送CSI-RS、所述终端设备的服务小区的SSB、TSR和PDCCH中一种或多种信息的时段。其中，所述方法还包括：所述终端设备丢弃在所述第一目标时段接收到的所述一种或多种信息。
也就是说，即使终端设备在第一目标时段内接收到上述一种或多种信息，也不使用这些信息，这样可以保证终端设备的终端的可靠性。
结合第九方面或第一种或第二种可能的实现方式，在第六种可能的实现方式中，所述第一目标时段包括所述网络设备发送CSI-RS的时段，其中，所述方法还包括：所述终端设备向所述网络设备发送所述第二BWP内的CSI-RS的CSI反馈信息。
也就是说，终端设备使用第二BWP中接收到CSI-RS时，仅向网络设备反馈第二BWP接收到的CSI-RS的反馈信息，以保证反馈信息的准确性，从而提高通信的可靠性。
结合第九方面或第一种至第六种中任意一种可能的实现方式，在第七种可能的实现方式中，所述第二下行信息包括下行数据调度信息，且所述下行数据调度信息调度所述终端设备在第三目标时段的下行数据时，所述方法还包括：所述终端设备在所述第三目标时段使用所述第一BWP接收所述终端设备的第三下行信息。
也就是说，在有终端设备的下行数据时，终端设备从第二BWP切换至第一BWP，以保证下行数据的正确接收。
结合第九方面或第一种至第七种中任意一种可能的实现方式，在第八种可能的实现方式中，所述方法还包括：所述终端设备使用第三BWP向所述网络设备发送第一上行信息；所述终端设备在第四目标时段使用第四BWP向所述网络设备发送第二上行信息，所述第四BWP小于所述第三BWP，所述第四目标时段之前所述网络设备没有向所述终端设备发送第二切换指示信息，且所述第二上行信息占用的带宽小于所述第一上行信息占用的带宽，所述第二切换指示信息用于指示所述终端设备切换所述第三BWP。
所述第四目标时段之前所述网络设备没有向所述终端设备发送BWP切换指示信息，是指网络设备本次使用第三BWP之后至第四目标时段之前，没有向终端设备发送过第二BWP切换信息。
也就是说，终端设备在有上行信息发送时，使用仅包含上行信息所在的带宽的第四BWP来发送上行信息。这样可以尽可能的节省终端的能耗。
结合第九方面或第一种至第八种中任意一种可能的实现方式，在第九种可能的实现方式中，所述第一BWP与所述第二BWP之间的差值大于或等于预设的带宽阈值。这样可以避免无用或者说节能效果不明显的BWP切换。
结合第九方面或第一种至第九种中任意一种可能的实现方式，在第十种可能的实现方式中，所述终端设备在所述第一目标时段使用所述第二BWP接收所述下行控制信息之前，所述终端设备在预设时段内改变BWP的次数小于或等于预设的次数阈值。这样可以避免终端设备频繁地进行切换，以避免浪费终端设备的资源。
结合第九方面或第一种至第十种中任意一种可能的实现方式，在第十一种可能的实现方式中，所述第一目标时段包括所述终端设备的非连续接收数据DRX的提前唤醒阶段。
结合第十一种可能的实现方式，在第十二种可能的实现方式中，所述提前唤醒阶段的最后一个时隙与所述提前唤醒阶段后第一个持续时间的第一个时隙之间的时隙差大于或等于预设的时隙差阈值的情况下。这样可以避免节能效果较小的BWP切换，从而可以避免终端设备的资源的浪费。
结合第九方面或第一种至第十种中任意一种可能的实现方式，在第十三种可能的实现方式中，所述第一下行信息包括PDCCH，其中，所述第一目标时段内的第一个符号位于所述第一下行信息所包括的PDCCH占用的符号之后。这样可以使得射频稳定时间不影响PDCCH的接收。
结合第九方面或第一种至第十种中任意一种可能的实现方式，在第十四种可能的实现方式中，所述第一目标时段内的第一个时隙不包括以下一种或多种时隙：所述终端设备的服务小区的SSB所在的时隙，所述终端设备的服务小区的SSB的测量定时配置信息所在的时隙或TRS所在的时隙。
第十方面，本申请提供了一种通信装置。所述通信装置包括：通信模块，用于接收来自网络设备的部分带宽BWP配置信息，所述BWP配置信息用于指示所述通信装置配置第一BWP；所述通信模块还用于使用所述第一BWP接收来自所述网络设备的第一下行信息；所述通信模块还用于在第一目标时段使用第二BWP接收来自所述网络设备的第二下行信息，其中，所述第一目标时段包括所述网络设备没有发送所述终端设备的下行数据的时段，且所述第一目标时段之前所述网络设备没有向所述终端设备发送第一切换指示信息，所述第一切换指示信息用于指示所述终端设备切换所述第一BWP。
结合第十方面，在第一种可能的实现方式中，所述第一BWP包含以下一种或多种带宽：物理下行控制信道PDCCH的控制资源集CORESET所在的带宽、所述通信装置的服务小区的同步信号块SSB所在的带宽、跟踪参考信息TRS所在的带宽和信道状态信息CSI-参考信号RS所在的带宽。
结合第十方面，在第二种可能的实现方式中，所述第二BWP包含所述网络设备为所述通信装置配置的下行初始BWP。
结合第十方面或上述任意一种可能的实现方式，在第三种可能的实现方式中，所述第一目标时段包括所述网络设备没有发送以下一种或多种信息的时段：CSI-RS、所述通信装置的服务小区的SSB、TSR和PDCCH。
结合第三种可能的实现方式，在第四种可能的实现方式中，所述通信模块还用于：在第二目标时段使用所述第一BWP接收来自所述网络设备的下行信息，所述第二目标时段包括所述网络设备发送CSI-RS、所述通信装置的服务小区的SSB、TSR和PDCCH中一种或多种信息的时段，所述第二目标时段位于所述第一目标时段之后，且在所述第二目标时段内没有所述通信装置的下行数据。
结合第十方面或第一种或第二种可能的实现方式，在第五种可能的实现方式中，所述第一目标时段包括所述网络设备发送CSI-RS，所述通信装置的服务小区的SSB、TSR和PDCCH中一种或多种信息的时段。其中，所述通信模块还用于丢弃所述一种或多种信息。
结合第十方面或第一种或第二种可能的实现方式，在第六种可能的实现方式中，所述 第一目标时段包括所述网络设备发送CSI-RS的时段，其中，所述通信模块还用于向所述网络设备发送所述第二BWP内的CSI-RS的CSI反馈信息。
结合第十方面或第一种至第六种中任意一种可能的实现方式，在第七种可能的实现方式中，所述第二下行信息包括下行数据调度信息，且所述下行数据调度信息调度所述通信装置在第三目标时段的下行数据时，所述通信模块还用于在所述第三目标时段使用所述第一BWP接收所述通信装置的第三下行信息。
结合第十方面或第一种至第七种中任意一种可能的实现方式，在第八种可能的实现方式中，所述通信模块还用于：使用第三BWP向所述网络设备发送第一上行信息；在第四目标时段使用第四BWP向所述网络设备发送第二上行信息，并且，所述第四BWP小于所述第三BWP，所述第四目标时段之前所述网络设备没有向所述终端设备发送第二切换指示信息，且所述第二上行信息占用的带宽小于所述第一上行信息占用的带宽，所述第二切换指示信息用于指示所述终端设备切换所述第三BWP。
结合第十方面或第一种至第八种中任意一种可能的实现方式，在第九种可能的实现方式中，所述第一BWP与所述第二BWP之间的差值大于或等于预设的带宽阈值。
结合第十方面或第一种至第九种中任意一种可能的实现方式，在第十种可能的实现方式中，所述通信装置在所述第一目标时段使用所述第二BWP接收所述下行控制信息之前，所述通信装置在预设时段内改变BWP的次数小于或等于预设的次数阈值。
结合第十方面或第一种至第十种中任意一种可能的实现方式，在第十一种可能的实现方式中，所述第一目标时段包括所述通信装置的非连续接收数据DXR的提前唤醒阶段。
结合第十一种可能的实现方式，在第十二种可能的实现方式中，所述提前唤醒阶段的最后一个时隙与所述提前唤醒阶段后第一个持续时间的第一个时隙之间的时隙差大于或等于预设的时隙差阈值。
结合第十方面或第一种至第十种中任意一种可能的实现方式，在第十三种可能的实现方式中，所述第一下行信息包括PDCCH，其中，所述第一目标时段内的第一个符号位于所述第一下行信息所包括的PDCCH占用的符号之后。
结合第十方面或第一种至第十种中任意一种可能的实现方式，在第十四种可能的实现方式中，所述第一目标时段内的第一个时隙不包括以下一种或多种时隙：所述通信装置的服务小区的SSB所在的时隙，所述通信装置的服务小区的SSB的测量定时配置信息所在的时隙或TRS所在的时隙。
第十一方面，提供了一种通信装置，该装置包括：存储器、处理器和接收器；所述存储器用于存储程序；所述处理器用于执行所述存储器存储的程序；当所述存储器存储的程序被执行时，所述处理器和所述收发器用于执行第九方面或者其中任意一种实现方式中的方法。
第十二方面，提供一种计算机可读介质，该计算机可读介质存储用于设备执行的程序代码，该程序代码用于执行第九方面或其中任意一种实现方式中的方法。
第十三方面，提供一种包含指令的计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行上述第九方面或其中任意一种实现方式中的方法。
第十四方面，提供一种芯片，所述芯片包括处理器与数据接口，所述处理器通过所述数据接口读取存储器上存储的指令，执行上述第九方面或其中任意一种实现方式中的方 法。
可选地，作为一种实现方式，所述芯片还可以包括存储器，所述存储器中存储有指令，所述处理器用于执行所述存储器上存储的指令，当所述指令被执行时，所述处理器用于执行第九方面或其中任意一种实现方式中的方法。
第十五方面，提供了一种终端设备，该终端设备包括：存储器，用于存储程序；处理器，用于执行所述存储器存储的程序，当所述存储器存储的程序被执行时，所述处理器用于执行第九方面或者其中任意一种实现方式中的方法。
第十六方面，提供一种通信系统，所述通信系统包括第十五方面中的终端设备。
附图说明
图1是可以应用本申请实施例的方法和装置的通信系统的示意性结构图。
图2是本申请一个实施例的通信方法的示意性流程图。
图3是本申请一个实施例的调整BWP的示意图。
图4是本申请一个实施例的通信装置的示意性结构图。
图5是本申请另一个实施例的通信装置的示意性结构图。
图6是本申请一个实施例的计算机程序产品的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案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、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、5G通信系统或者5G新空口(new radio，NR)通信系统等。
本申请实施例中的终端设备也可以称为UE、移动台、接入终端、用户单元、用户站、移动站、远方站、远程终端、移动设备、终端、无线通信设备、用户代理或用户装置等，其具体可以是WLAN中的站点(station，ST)、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)、具有无线通信功能的手持设备、计算设备、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、未来5G网络中的移动台以及未来演进的PLMN网络中的终端设备等中的任意一种。
在本申请实施例中的网络设备可以是用于与终端通信的设备，具体可以是无线局域网(wireless local Area networks，WLAN)中的接入点(access point，AP)、全球移动通信系统(global system for mobile communication，GSM)或码分多址(code division multiple access，CDMA)中的基站收发信台(base transceiver station，BTS)、宽带码分多址(wideband code division multiple access,WCDMA)中的基站(nodeB，NB)、LTE系统中的演进型基 站(evolutional node B，eNB)、中继站或接入点、车载设备、可穿戴设备、未来5G网络中的接入网设备以及未来演进的公共陆地移动网络(public land mobile network，PLMN)中的接入网设备等中的任意一种。
可以理解的是，本申请实施例中的“多个”是指两个或两个以上，其它量词与之类似。“/”描述关联对象的关联关系，表示可以存在三种关系，例如，A/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。
图1是可以应用本申请实施例的方法和装置的通信系统的示意性结构图。如图1所示，该通信系统中可以包含基站110和UE 120。
UE 120支持BWP技术，即UE 120可以通过BWP与基站110通信。其中，BWP是指一个载波(carrier)的一部分带宽。例如，一个带宽为100MHz的载波，指定其中的20MHz为一个BWP。
例如，UE 120所能支持的(射频和/或基带)带宽可以小于系统规定的最大载波带宽或不高于特定的频率带宽，系统规定的最大载波带宽也可以称为系统带宽。
UE使用小于系统带宽的BWP来与基站通信，可以降低UE的工作功耗，例如，小区带宽为200MHz的情况下，UE的BWP可以为100MHz。
UE使用的BWP可以由基站配置，但是基站配置的BWP通常都很大，并且，基站配置BWP需要额外的信令开销，为了节省信令开销，基站不会频繁变更UE的BWP，因此，UE始终按照基站配置的BWP进行通信依然需要UE浪费较大的功耗。
例如，当无数据调度的时候，UE实际上可以只检测物理下行控制信道(physical downlink control channel，PDCCH)和其他导频信号，而不需要按照基站配置的BWP接收数据。这种情况下，UE仍然按照基站配置的BWP接收数据会浪费较多功耗。
但是，随着通信技术的发展，新的通信需求对终端在节能和待机时长方面提出了新的需求。因此，如何降低UE的功耗，称为亟待解决的技术问题。针对该技术问题，本申请提出了一种UE自主调整BWP的方法，以节省UE的功耗。
本申请中的UE自主调整BWP可以理解为UE根据当前通信需求，自己决定与网络设备进行通信的BWP，并使用该BWP与网络设备进行通信，而不是使用基站配置的BWP。
例如，在没有基站的BWP切换命令的情况下，在无数据调度的时隙(slot)，终端自主缩小下行BWP(或者说使用比基站配置的BWP小的BWP来接收下行信息)，并在有数据调度的时候恢复到网络设备配置的BWP。在UE使用自主调整BWP接收信息的状态下，UE进行通信的相关计算操作和上报操作可以基于在自主调整的BWP内接收的信号来执行。
又如，UE可以根据自主调整的BWP内接收的导频信号进行信道状态信息(channel state information，CSI)反馈。或者，在需要接收CSI反馈所基于的导频信号时，UE可以将下行BWP调整到网络设备配置的BWP。
再如，UE可以在非连续数据接收(discontinuous reception，DRX)的提前唤醒阶段，自主缩小下行BWP。
图2为本申请一个实施例的通信方法的示意性流程图。如图2所示，该通信方法可以包含S210、S220和S230。
S210，终端设备接收来自网络设备的BWP配置信息，所述BWP配置信息用于指示 所述终端设备配置第一BWP。
本实施例中的终端设备的一种示例为图1中的UE 120，网络设备的一种示例为图1中的基站110。
其中，第一BWP可以包括：终端设备接入网络设备时，网络设备为终端设备配置的初始(initial)BWP，该初始BWP可以包括上行初始BWP，也可以包括下行BWP；终端设备接入网络设备之后，处于连接态时，网络设备为终端设备配置的一个或多个BWP。
可选地，第一BWP也可以包括网络设备为终端设备配置的默认(default)BWP。
S220，所述终端设备使用所述第一BWP上接收来自所述网络设备的第一下行信息。
可选地，网络设备可以为终端设备配置多个BWP，然后网络设备可以通过指示终端设备激活这多个BWP中的哪个BWP来接收下行信息。本实施例中，将终端设备上当前激活的BWP称为第一BWP。
因为当前终端设备上配置的BWP是激活的第一BWP，因此终端设备在第一BWP接收网络设备发送的下行信息，例如下行控制信息，其中下行控制信息中可以包含下行数据调度信息。可选地，下行数据调度信息可以携带与PDCCH上。本实施例中，将终端设备当前使用第一BWP接收的下行信息称为第一下行信息
S230，所述终端设备在第一目标时段使用第二BWP接收来自所述网络设备的第二下行信息，其中，所述第二BWP小于所述第一BWP，所述第一目标时段包括所述网络设备没有发送所述终端设备的下行数据的时段，且所述第一目标时段之前所述网络设备没有向所述终端设备发送第一切换指示信息，所述第一切换指示信息用于指示所述终端设备切换所述第一BWP。
作为一种示例，网络设备在第一BWP上可以发送一个或多个终端设备的下行数据调度信息，终端设备处于连接态时，可以在第一BWP上检测属于自己的下行数据调度信息，并根据检测结果确定网络设备是否调度了自己的下行数据。
例如，终端设备在第一BWP上进行盲检，以检测是否有属于自己的下行数据的调度信息，若终端设备在第一BWP上没有检测到属于自己的下行数据调度信息，则终端设备可以确定第一BWP上的第一下行数据调度信息并没有调度自己的下行数据；若终端设备在第一BWP上检测到属于自己的下行数据调度信息，但该下行数据调度信息没有调度下行数据时，则终端设备可以确定第一BWP上的第一下行数据调度信息并没有调度自己的下行数据。
若终端设备确定网络设备没有调度属于自己的下行数据，则终端设备在第一目标时段可以使用较小的第二BWP来接收网络设备发送的下行信息，为了方便描述，将该下行信息称为第二下行信息。
本实施例中，第一目标时段可以是终端设备与网络设备接下来的通信过程中的某一个时隙。
本实施例中，因为终端设备在本次使用第一BWP之后，并没有接收到网络设备发送的BWP切换指示信息，因此，第二BWP为终端设备自主确定的或自主调整的BWP。
本实施例中，将终端设备使用比第一BWP小的第二BWP接收下行信息的行为称为终端设备自主缩小BWP。
本实施例中，网络设备为终端设备确定的BWP可以理解为：如果由网络设备使用现 有方法为终端设备确定第一目标时段的BWP时，网络设备能够为终端设备确定的BWP。
本实施例中，第二BWP为终端自主确定或者说自主调整的BWP，可以理解为第二BWP不是基站为终端配置的BWP。
本实施例中，因为第二BWP小于基站为UE配置的第一BWP，且基站并没有向终端设备发送BWP切换指令，所以，UE使用第二BWP来与基站通信，与UE使用第一BWP来与基站通信相比，在不消耗更多信令的情况下，可以减少UE更多的功耗。
本实施例的一种实现方式中，如图3所示，在基站向UE配置BWP(即第一BWP)之后，UE可以使用该第一BWP接收信息；在基站长期无数据调度的情况下，UE自主调整BWP，并使用调整后的BWP(即第二BWP)接收信息。
如图3所示，在基站有数据调度的情况下，UE又可以恢复使用基站配置的BWP(即第一BWP)来接收信息。
例如，终端设备使用第二BWP接收到的第二下行数据调度信息调度所述终端设备在第二目标时段的下行数据时，所述终端设备可以在所述第二目标时段使用所述第一BWP接收所述终端设备的第二下行信息。
本实施例中，终端设备自主缩小下行BWP时，作为一种示例，终端设备可以将BWP缩小到第二BWP仅包含PDCCH的控制资源集(CORESET)所在的带宽、终端设备的服务小区的同步信号块(synchronization signal and PBCH block，SSB)所在的带宽、跟踪参考信号(tracking reference signal，TRS)所在的带宽和CSI-参考信号(reference signal，RS)所在的带宽中一种或多种带宽，其中，PBCH是物理广播信道(physical broadcast channel)的简称。一旦有下行数据调度，则终端设备可以立刻恢复到基站配置的BWP(即第一BWP)，并锁定一段时间不开启终端设备自主调整下行BWP的功能。
终端设备处于使用自主调整的BWP(即第二BWP)接收下行信号的状态时，可选地，终端设备所进行的所有计算处理和上报处理可以全部基于终端设备使用自主调整的第二BWP接收到的信号来执行。
终端设备自主缩小BWP之后，作为一种示例，若缩小后的第二BWP包含CSI-RS所在带宽，终端设备可以基于在第二BWP中接收到的导频信号进行CSI反馈。或者可以说，第一目标时段内包含CSI-RS时，或第一目标时段包括网络设备发送CSI-RS的时段时，所述终端设备向所述网络设备发送所述终端设备在所述第二BWP内接收到的CSI-RS的CSI反馈信息。
终端设备自主缩小BWP之后，作为另一种示例，每当需要接收进行CSI反馈所基于的导频信号时，终端设备将下行BWP调整到基站配置的BWP(即第一BWP)。或者可以说，所述终端设备在所述第一目标时段之后的第二目标时段使用所述第一BWP接收来自所述网络设备的下行信息，所述第二目标时段包括所述网络设备发送CSI-RS的时段。
本实施例中，终端设备可以自主缩小上行BWP，例如，将上行BWP缩小到小于网络设备为其配置的上行BWP。
作为一种示例，终端设备可以使得调整后的上行BWP(即第二BWP)仅包含第一目标时间段中终端设备将发送的信号所占的带宽。例如，终端设备可以在每个时隙自主调整上行BWP，使得每个时隙的上行BWP可以仅包含该时隙中终端设备将发送的信号所占的带宽。
以基站配置的上行BWP(即第一BWP)包含273个资源块(resource block，RB)为例，若当前时隙中实现需要发送的信号只占用20个RB，则终端设备可以按照20个RB生成基带信号，并发送该基带信号，从而可以节省大量带宽，进而节省大量功耗。
本实施例的一些实现方式中，终端进行BWP切换的时间可以预先配置好。例如，可以预先约定在PDCCH符号之后开始将下行BWP切换至第一BWP或切换至第二BWP。例如，终端设备可以在PDCCH符号之后开始使用第一BWP接收下行信号。
或者可以说，所述第一下行信息包括PDCCH，其中，所述第一目标时段内的第一个符号位于所述第一下行信息所包括的PDCCH占用的符号之后。该实现方式可以使得终端设备在切换BWP之后的射频稳定时间不影响PDCCH的接收，从而可以保证终端设备的通信的可靠性。
本实施例的另一些实现方式中，BWP切换的时间(例如第一目标时间段的起始时间)将位于终端设备的服务小区的SSB的传输时间内，或位于测量使用的SMTC的传输时间内，或者位于TRS突发时间内的情况下，若终端设备是将第一BWP切换为第二BWP，则终端设备可以放弃该次切换，即终端设备可以不执行该次切换；反之，若终端设备是将第二BWP切换为第一BWP，则终端设备可以执行该次切换。其中，SMTC为SSB-MTC(measurement timing configurations)的缩写。
或者可以说，所述第一目标时段内的第一个时隙不包括以下一种或多种时隙：所述终端设备的服务小区的SSB所在的时隙，所述终端设备的服务小区的SSB的测量定时配置信息所在的时隙，TRS所在的时隙。
换句话说，所述第一目标时段内的第一个时隙不包括所述终端设备的服务小区的SSB所在的时隙，所述终端设备的服务小区的SSB的测量定时配置信息所在的时隙，TRS所在的时隙中一种或多种时隙时，所述终端设备才从第一BWP切换至第二BWP。
该实现方式中，BWP切换的时间位于终端设备的服务小区的SSB的传输时间内的一种示例为：BWP切换的时间所在的时隙为SSB的4个符号所在的任意时隙。BWP切换的时间位于TRS突发时间(burst)内的一种示例为：BWP切换的时间所在的时隙为TRS的4个符号所在的实现或者为这4个符号之间任意一个符号所在的时隙。
本实施例的又一些实现方式中，若终端设备在BWP切换的时间接收到导频信号，例如终端设备在BWP切换的时间所在的符号接收到导频信号，则终端设备可以丢弃该导频信号的测量结果。
或者可以说，所述第一目标时段包括所述网络设备发送CSI-RS、所述终端设备的服务小区的SSB、TSR和PDCCH中一种或多种信息的时段时，所述终端设备丢弃在所述第一目标时段接收到的所述一种或多种信息。
所述终端设备丢弃在所述第一目标时段接收到的所述一种或多种信息可以理解为终端设备本应该基于接收到的CSI-RS、所述终端设备的服务小区的SSB、TSR和/或PDCCH执行相关操作的，但是因为CSI-RS、所述终端设备的服务小区的SSB、TSR和/或PDCCH是在较小的第二BWP上接收到的，可以不根据这些接收到的CSI-RS、SSB、TSR和/或PDCCH执行相关操作。
例如，若BWP切换在SMTC的传输时间内发生，则可以丢弃当前SMTC的无线资源管理(radio resource management，RRM)测量结果。又如，若BWP切换在TRS burst内 发生，则丢弃当前TRS burst的定时、频偏结果。再如，若BWP切换在CSI-RS所在的时隙发生，则丢弃当前时隙中的波束管理(beam management，BM)和CSI反馈的相关计算结果。
本实施例的一些实现方式中，可选地，在终端设备执行BWP切换之前，终端设备可以先计算第一BWP与第二BWP之间的带宽差。若该带宽差小于预设的门限值，则终端设备不执行该BWP切换，而是依然使用第二BWP进行通信。或者可以说，所述第一BWP与所述第二BWP之间的差值大于或等于预设的带宽阈值时，终端设备才从第一BWP切换至第二BWP。
本实施例的一些实现方式中，终端设备可以统计预设的单位时间内终端设备已执行的BWP切换的次数，若该次数超过预设的切换门限值，则终端设备可以不执行该BWP切换，而是依然可以使用第二BWP进行通信。
或者可以说，所述终端设备在所述第一目标时段使用所述第二BWP接收所述下行控制信息之前，所述终端设备在预设时段内改变BWP的次数小于或等于预设的次数阈值时，终端设备才从第一BWP切换至第二BWP。
下面介绍本实施例的通信方法在DRX场景下的应用。在DRX场景下，每个DRX由周期和开启接收的时间(OnDuration)。在OnDuration前，终端设备需要提前打开一段时间以执行定时频偏跟踪等动作，终端设备该提前打开的操作称为提前唤醒。
可选地，终端设备可以在该提前唤醒阶段从第一BWP切换至第二BWP。作为一种示例，这种场景下的第一BWP可以是网络设备配置的初始BWP。
在DRX的提前唤醒阶段，可以将终端设备的射频信号(radio frequency，RF)的BWP(即第二BWP带宽)设置为包含：终端设备的服务小区的SSB所占用的带宽，和/或，落在提前唤醒阶段的TRS和/或CSI-RS所占用的带宽。
在提前唤醒阶段，终端设备可以读取提前唤醒阶段的最后一个时隙，记作n1；读取OnDuration的第一个时隙，记作n2。若n2-n1大于或等于预设的阈值，则终端设备可以在提前唤醒阶段执行BWP切换，否则可以不执行BWP切换。
可选地，终端设备可以计算提前唤醒阶段的第二BWP与基站配置的第一BWP之间的带宽差，若该带宽差小于预设的门限值，则终端设备可以不进行BWP切换，即依然继续使用基站配置的BWP。
图4是本申请一个实施例的通信装置400的示意性结构图。装置400可以包括通信模块420。可选地，通信装置400还可以包括处理模块410
装置400可以用于执行图2所示方法中由终端设备执行的相关步骤或操作，例如通信模块420可以用于执行S210、S220和S230。处理模块410可以用于执行S210、S220和S230中终端设备的内部相关操作，例如确定终端设备是否需要从第一BWP切换至第二BWP。
在一些示例中，通信模块420可以包含发送模块；在另一些示例中，通信模块420可以包含接收模块；在又一些实施例中，通信模块420可以包含发送模块和接收模块。
图5为本申请一个实施例的通信装置500的示意性结构图。装置500包括处理器502、通信接口503和存储器504。装置500可以是图2中的终端设备的一种示例性结构，装置500也可以是芯片的示例性结构。其中，可选地，存储器504可以是装置500外能够与处 理器502耦合的存储器。
处理器502、存储器504和通信接口503之间可以通过总线通信。存储器504中存储有可执行代码，处理器502读取存储器504中的可执行代码以执行对应的方法。存储器504中还可以包括操作系统等其他运行进程所需的软件模块。操作系统可以为LINUX TM，UNIX TM，WINDOWS TM等。
例如，存储器504中的可执行代码用于实现图2中由终端设备执行的步骤或操作；处理器502读取存储器504中的该可执行代码以执行图2中由终端设备执行的步骤或操作。
其中，处理器502可以为CPU。存储器504可以包括易失性存储器(volatile memory)，例如随机存取存储器(random access memory，RAM)。存储器504还可以包括非易失性存储器(2non-volatile memory，2NVM)，例如只读存储器(2read-only memory，2ROM)，快闪存储器，硬盘驱动器(hard disk drive，HDD)或固态启动器(solid state disk，SSD)。
在本申请的一些实施例中，所公开的方法可以实施为以机器可读格式被编码在计算机可读存储介质上的或者被编码在其它非瞬时性介质或者制品上的计算机程序指令。图6示意性地示出根据这里展示的至少一些实施例而布置的示例计算机程序产品的概念性局部视图，所述示例计算机程序产品包括用于在计算设备上执行计算机进程的计算机程序。在一个实施例中，示例计算机程序产品600是使用信号承载介质601来提供的。所述信号承载介质601可以包括一个或多个程序指令602，其当被一个或多个处理器运行时可以提供以上针对图26所示的方法中描述的功能或者部分功能。例如，图2中所示的实施例，S210和S220的一个或多个特征可以由与信号承载介质601相关联的一个或多个指令来承担。
在一些示例中，信号承载介质601可以包含计算机可读介质603，诸如但不限于，硬盘驱动器、紧密盘(CD)、数字视频光盘(DVD)、数字磁带、存储器、只读存储记忆体(read-only memory，ROM)或随机存储记忆体(random access memory，RAM)等等。在一些实施方式中，信号承载介质601可以包含计算机可记录介质604，诸如但不限于，存储器、读/写(R/W)CD、R/W DVD、等等。在一些实施方式中，信号承载介质601可以包含通信介质605，诸如但不限于，数字和/或模拟通信介质(例如，光纤电缆、波导、有线通信链路、无线通信链路、等等)。因此，例如，信号承载介质601可以由无线形式的通信介质605(例如，遵守IEEE 802.11标准或者其它传输协议的无线通信介质)来传达。一个或多个程序指令602可以是，例如，计算机可执行指令或者逻辑实施指令。在一些示例中，前述的计算设备可以被配置为，响应于通过计算机可读介质603、计算机可记录介质604、和/或通信介质605中的一个或多个传达到计算设备的程序指令602，提供各种操作、功能、或者动作。应该理解，这里描述的布置仅仅是用于示例的目的。因而，本领域技术人员将理解，其它布置和其它元素(例如，机器、接口、功能、顺序、和功能组等等)能够被取而代之地使用，并且一些元素可以根据所期望的结果而一并省略。另外，所描述的元素中的许多是可以被实现为离散的或者分布式的组件的、或者以任何适当的组合和位置来结合其它组件实施的功能词条。
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。基于这样的理解，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、随机存取存储器、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以所述权利要求的保护范围为准。

Claims (34)

  1. 一种通信方法，其特征在于，包括：
    终端设备接收来自网络设备的部分带宽BWP配置信息，所述BWP配置信息用于指示所述终端设备配置第一BWP；
    所述终端设备使用所述第一BWP接收来自所述网络设备的第一下行信息；
    所述终端设备在第一目标时段使用第二BWP接收来自所述网络设备的第二下行信息，其中，所述第二BWP小于所述第一BWP，所述第一目标时段包括所述网络设备没有发送所述终端设备的下行数据的时段，且所述第一目标时段之前所述网络设备没有向所述终端设备发送第一切换指示信息，所述第一切换指示信息用于指示所述终端设备切换所述第一BWP。
  2. 根据权利要求1所述的方法，其特征在于，所述第二BWP包含以下一种或多种带宽：物理下行控制信道PDCCH的控制资源集CORESET所在的带宽、所述终端设备的服务小区的同步信号块SSB所在的带宽、跟踪参考信息TRS所在的带宽或信道状态信息CSI-参考信号RS所在的带宽。
  3. 根据权利要求1所述的方法，其特征在于，所述第二BWP包含所述网络设备为所述终端设备配置的下行初始BWP。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第一目标时段包括所述网络设备没有发送以下一种或多种信息的时段：CSI-RS、所述终端设备的服务小区的SSB、TSR或PDCCH。
  5. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    所述终端设备在第二目标时段使用所述第一BWP接收来自所述网络设备的下行信息，所述第二目标时段包括所述网络设备发送CSI-RS、所述终端设备的服务小区的SSB、TSR和PDCCH中一种或多种信息的时段，所述第二目标时段位于所述第一目标时段之后，且在所述第二目标时段内没有所述终端设备的下行数据。
  6. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第一目标时段包括所述网络设备发送CSI-RS、所述终端设备的服务小区的SSB、TSR和PDCCH中一种或多种信息的时段；
    其中，所述方法还包括：
    所述终端设备丢弃在所述第一目标时段接收到的所述一种或多种信息。
  7. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第一目标时段包括所述网络设备发送CSI-RS的时段，其中，所述方法还包括：
    所述终端设备向所述网络设备发送所述第二BWP内的CSI-RS的CSI反馈信息。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述第二下行信息包括下行数据调度信息，且所述下行数据调度信息调度所述终端设备在第三目标时段的下行数据时，所述方法还包括：
    所述终端设备在所述第三目标时段使用所述第一BWP接收所述终端设备的第三下行信息。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备使用第三BWP向所述网络设备发送第一上行信息；
    所述终端设备在第四目标时段使用第四BWP向所述网络设备发送第二上行信息，所述第四BWP小于所述第三BWP，所述第四目标时段之前所述网络设备没有向所述终端设备发送第二切换指示信息，且所述第二上行信息占用的带宽小于所述第一上行信息占用的带宽，所述第二切换指示信息用于指示所述终端设备切换所述第三BWP。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述第一BWP与所述第二BWP之间的差值大于或等于预设的带宽阈值。
  11. 根据权利要求1至10中任一项所述的方法，其特征在于，所述终端设备在所述第一目标时段使用所述第二BWP接收所述下行控制信息之前，所述终端设备在预设时段内改变BWP的次数小于或等于预设的次数阈值。
  12. 根据权利要求1至11中任一项所述的方法，其特征在于，所述第一目标时段包括所述终端设备的非连续接收数据DRX的提前唤醒阶段。
  13. 根据权利要求12所述的方法，其特征在于，所述提前唤醒阶段的最后一个时隙与所述提前唤醒阶段后第一个持续时间的第一个时隙之间的时隙差大于或等于预设的时隙差阈值的情况下。
  14. 根据权利要求1至11中任一项所述的方法，其特征在于，所述第一下行信息包括PDCCH，其中，所述第一目标时段内的第一个符号位于所述第一下行信息所包括的PDCCH占用的符号之后。
  15. 根据权利要求1至11中任一项所述的方法，其特征在于，所述第一目标时段内的第一个时隙不包括以下一种或多种时隙：所述终端设备的服务小区的SSB所在的时隙，所述终端设备的服务小区的SSB的测量定时配置信息所在的时隙，TRS所在的时隙。
  16. 一种通信装置，其特征在于，包括：
    通信模块，用于接收来自网络设备的部分带宽BWP配置信息，所述BWP配置信息用于指示所述通信装置配置第一BWP；
    所述通信模块还用于使用所述第一BWP接收来自所述网络设备的第一下行信息；
    所述通信模块还用于在第一目标时段使用第二BWP接收来自所述网络设备的第二下行信息，其中，所述第二BWP小于所述第一BWP，所述第一目标时段包括所述网络设备没有发送所述终端设备的下行数据的时段，且所述第一目标时段之前所述网络设备没有向所述终端设备发送第一切换指示信息，所述第一切换指示信息用于指示所述终端设备切换所述第一BWP。
  17. 根据权利要求16所述的装置，其特征在于，所述第二BWP包含以下一种或多种带宽：物理下行控制信道PDCCH的控制资源集CORESET所在的带宽、所述通信装置的服务小区的同步信号块SSB所在的带宽、跟踪参考信息TRS所在的带宽和信道状态信息CSI-参考信号RS所在的带宽。
  18. 根据权利要求16所述的装置，其特征在于，所述第二BWP包含所述网络设备为所述通信装置配置的下行初始BWP。
  19. 根据权利要求16至18中任一项所述的装置，其特征在于，所述第一目标时段包括所述网络设备没有发送以下一种或多种信息的时段：CSI-RS、所述通信装置的服务小区 的SSB、TSR和PDCCH。
  20. 根据权利要求19所述的装置，其特征在于，所述通信模块还用于：在第二目标时段使用所述第一BWP接收来自所述网络设备的下行信息，所述第二目标时段包括所述网络设备发送CSI-RS、所述通信装置的服务小区的SSB、TSR和PDCCH中一种或多种信息的时段，所述第二目标时段位于所述第一目标时段之后，且在所述第二目标时段内没有所述通信装置的下行数据。
  21. 根据权利要求16至18中任一项所述的装置，其特征在于，所述第一目标时段包括所述网络设备发送CSI-RS，所述通信装置的服务小区的SSB、TSR和PDCCH中一种或多种信息的时段；
    其中，所述通信模块还用于丢弃所述一种或多种信息。
  22. 根据权利要求16至18中任一项所述的装置，其特征在于，所述第一目标时段包括所述网络设备发送CSI-RS的时段，其中，所述通信模块还用于向所述网络设备发送所述第二BWP内的CSI-RS的CSI反馈信息。
  23. 根据权利要求16至22中任一项所述的装置，其特征在于，所述第二下行信息包括下行数据调度信息，且所述下行数据调度信息调度所述通信装置在第三目标时段的下行数据时，所述通信模块还用于在所述第三目标时段使用所述第一BWP接收所述通信装置的第三下行信息。
  24. 根据权利要求16至23中任一项所述的装置，其特征在于，所述通信模块还用于：
    使用第三BWP向所述网络设备发送第一上行信息；
    在第四目标时段使用第四BWP向所述网络设备发送第二上行信息，并且，所述第四BWP小于所述第三BWP，所述第四目标时段之前所述网络设备没有向所述终端设备发送第二切换指示信息，且所述第二上行信息占用的带宽小于所述第一上行信息占用的带宽，所述第二切换指示信息用于指示所述终端设备切换所述第三BWP。
  25. 根据权利要求16至24中任一项所述的装置，其特征在于，所述第一BWP与所述第二BWP之间的差值大于或等于预设的带宽阈值。
  26. 根据权利要求16至25中任一项所述的装置，其特征在于，所述通信装置在所述第一目标时段使用所述第二BWP接收所述下行控制信息之前，所述通信装置在预设时段内改变BWP的次数小于或等于预设的次数阈值。
  27. 根据权利要求16至26中任一项所述的装置，其特征在于，所述第一目标时段包括所述通信装置的非连续接收数据DXR的提前唤醒阶段。
  28. 根据权利要求27所述的装置，其特征在于，所述提前唤醒阶段的最后一个时隙与所述提前唤醒阶段后第一个持续时间的第一个时隙之间的时隙差大于或等于预设的时隙差阈值。
  29. 根据权利要求16至26中任一项所述的装置，其特征在于，所述第一下行信息包括PDCCH，其中，所述第一目标时段内的第一个符号位于所述第一下行信息所包括的PDCCH占用的符号之后。
  30. 根据权利要求16至26中任一项所述的装置，其特征在于，所述第一目标时段内的第一个时隙不包括以下一种或多种时隙：所述通信装置的服务小区的SSB所在的时隙，所述通信装置的服务小区的SSB的测量定时配置信息所在的时隙或TRS所在的时隙。
  31. 一种通信装置，其特征在于，包括：处理器，所述处理器与存储器耦合；
    所述存储器用于存储指令；
    所述处理器用于执行所述存储器中存储的指令，以使得所述装置实现如权利要求1至15中任一项所述的方法。
  32. 一种计算机可读介质，其特征在于，包括指令，当所述指令在处理器上运行时，使得所述处理器实现如权利要求1至15中任一项所述的方法。
  33. 一种终端设备，其特征在于，包括处理器和收发器，所述处理器与存储器耦合；
    所述存储器用于存储指令；
    所述处理器用于执行所述存储器中存储的指令，所述收发器用于进行通信，以使得所述终端设备实现如权利要求1至15中任一项所述的方法。
  34. 一种计算机程序产品，其特征在于，所述计算机程序产品包含指令，当所述指令在处理器上运行时，使得所述处理器实现如权利要求1至15中任一项所述的方法。
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