WO2021081715A1 - 通信方法及装置 - Google Patents

通信方法及装置 Download PDF

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Publication number
WO2021081715A1
WO2021081715A1 PCT/CN2019/113751 CN2019113751W WO2021081715A1 WO 2021081715 A1 WO2021081715 A1 WO 2021081715A1 CN 2019113751 W CN2019113751 W CN 2019113751W WO 2021081715 A1 WO2021081715 A1 WO 2021081715A1
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WO
WIPO (PCT)
Prior art keywords
reference signal
signal sequence
downlink reference
terminal device
activation duration
Prior art date
Application number
PCT/CN2019/113751
Other languages
English (en)
French (fr)
Inventor
余雅威
李超君
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.)
Filing date
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/CN2019/113751 priority Critical patent/WO2021081715A1/zh
Priority to CN201980098318.9A priority patent/CN114073134A/zh
Priority to EP19950922.5A priority patent/EP4033720A4/en
Publication of WO2021081715A1 publication Critical patent/WO2021081715A1/zh
Priority to US17/730,880 priority patent/US20220256461A1/en

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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
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H04W52/0232—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal according to average transmission signal activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • 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
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof

Definitions

  • This application relates to communication technology, and in particular to a communication method and device.
  • the terminal device in the connected state will transmit uplink and downlink data, including data reception and transmission. If the service data packet is transmitted in bursts, there may be a long time interval between the two service data packets arriving at the terminal device. And if the terminal equipment monitors the downlink control signaling in every slot, it can correctly receive the service data packets, including the uplink scheduling, with the shortest delay after receiving the downlink control signaling according to the instructions of the downlink control signaling. Authorized or downstream data. However, the terminal equipment has been active in order to monitor the downlink control signaling, which will result in greater energy consumption, especially when there are fewer burst service data packets and a longer interval.
  • NR New Radio
  • the NR system has introduced Connected-Discontinous Receving (C-DRX).
  • C-DRX Connected-Discontinous Receving
  • the network equipment semi-statically configures the C-DRX cycle length according to business requirements, and configures a C-DRX activation duration (on duration) in each C-DRX cycle, and the terminal equipment is within the C-DRX activation duration In the active state, it monitors the downlink control signaling, and when the C-DRX activation duration is exceeded and no more data packets arrive, the terminal device enters the dormant state, so as to realize the energy saving of the terminal device when there is no data packet transmission.
  • the present application provides a communication method and device, which indicate wake-up information through a downlink reference signal sequence, which reduces the power consumption of terminal equipment and improves the efficiency of communication.
  • the downlink reference signal sequence is used to indicate whether at least one terminal device is activated within the activation duration; and send the downlink reference signal sequence to the at least one terminal device.
  • CSI-RS sequence as the downlink reference signal sequence can reuse the existing sequence and reduce the signaling overhead.
  • the network equipment carries WUS information through the CSI-RS sequence, so that the downlink reference signal sequence can realize the function of WUS, and wake up the terminal device only when there is downlink data transmission and the terminal device needs to monitor and receive, reducing the power consumption of the terminal device and achieving
  • the CSI-RS function is used to measure the channel state and trigger the terminal device to report CSI, so it can improve the efficiency of communication.
  • the information carried by the downlink reference signal sequence includes a first field, and the first field is used to indicate whether the at least one terminal device is activated within the activation duration.
  • the information carried by the downlink reference signal sequence includes a third field, and the third field is used to indicate whether the at least one terminal device performs bandwidth part BWP switching.
  • the sending the downlink reference signal sequence to the at least one terminal device includes: sending to the at least one terminal device before the activation duration or within the activation duration The downlink reference signal sequence.
  • the activation duration is configured by a network device.
  • this application provides a communication method, including:
  • the downlink reference signal sequence is a channel state information reference signal CSI-RS sequence
  • the existing CSI-RS sequence can be multiplexed to reduce signaling overhead
  • the downlink reference signal sequence is also used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a first field, and the first field is used to indicate whether the at least one terminal device is activated within the activation duration.
  • the information carried by the downlink reference signal sequence includes a second field, and the second field is used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a third field, and the third field is used to indicate whether the at least one terminal device performs bandwidth part BWP switching,
  • the receiving the downlink reference signal sequence includes: receiving the downlink reference signal sequence before the activation duration or within the activation duration.
  • the method further includes: when the downlink reference signal sequence is received before the activation duration, if the downlink reference signal sequence indicates that the at least one terminal device is within the activation duration If activated, the physical downlink channel is monitored; or, when the downlink reference signal sequence is received within the activation duration, if the downlink reference signal sequence indicates that the at least one terminal device is not activated within the activation duration , Then enter the sleep state.
  • the activation duration is configured by a network device.
  • this application provides a communication method, including:
  • Such a method has the advantages of the method of the aforementioned first aspect.
  • whether the downlink reference signal sequence is monitored can indicate whether to activate within the activation duration; no additional signaling is required, so signaling overhead is saved.
  • the activation duration can be configured by the network device. Or, if the communication parties negotiate or comply with a pre-defined or agreement, such as a table and a corresponding relationship, signaling can also be saved.
  • the downlink reference signal sequence is a channel state information reference signal CSI-RS sequence
  • the existing CSI-RS sequence can be multiplexed to reduce signaling overhead
  • the information carried by the downlink reference signal sequence includes a second field, and the second field is used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the monitoring the downlink reference signal sequence includes: monitoring the downlink reference signal sequence before the activation duration or during the activation duration.
  • it further includes: when the downlink reference signal sequence is monitored before the activation duration, the terminal device activates within the activation duration and monitors the physical downlink channel; or, when in the activation duration When the downlink reference signal sequence is monitored within the activation duration, it enters the dormant state within the activation duration.
  • the present application provides a device, including:
  • a processing module used to generate a downlink reference signal sequence, the downlink reference signal sequence is used to indicate whether at least one terminal device is activated within the activation duration; a sending module, used to send the downlink reference signal to the at least one terminal device sequence.
  • the downlink reference signal sequence is a channel state information reference signal CSI-RS sequence.
  • the downlink reference signal sequence is also used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a first field, and the first field is used to indicate whether the at least one terminal device is activated within the activation duration.
  • the information carried by the downlink reference signal sequence includes a second field, and the second field is used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a third field, and the third field is used to indicate whether the at least one terminal device performs bandwidth part BWP switching.
  • the device in this aspect is similar to the method of the first method, so it has corresponding advantages, and will not be repeated here.
  • the present application provides a device, including:
  • the receiving module is configured to receive a downlink reference signal sequence, the downlink reference signal sequence is used to indicate whether at least one terminal device is activated within the activation duration, and the at least one terminal device includes the first terminal device; the processing module is configured to determine Whether the first terminal device is activated within the activation duration.
  • the downlink reference signal sequence is a channel state information reference signal CSI-RS sequence.
  • the downlink reference signal sequence is also used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a first field, and the first field is used to indicate whether the at least one terminal device is activated within the activation duration.
  • the information carried by the downlink reference signal sequence includes a second field, and the second field is used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a third field, and the third field is used to indicate whether the at least one terminal device performs bandwidth part BWP switching,
  • the receiving module is specifically configured to receive the downlink reference signal sequence before the activation duration or within the activation duration.
  • the processing module is further configured to, when the downlink reference signal sequence is received before the activation duration, if the downlink reference signal sequence indicates that the at least one terminal device is in the If activated within the activation duration, the physical downlink channel is monitored; or, when the downlink reference signal sequence is received within the activation duration, if the downlink reference signal sequence indicates that the at least one terminal device is in the activation If it is not activated within the duration, it will enter the sleep state.
  • the device in this aspect is similar to the method in the second aspect, so it has corresponding advantages and will not be repeated.
  • this application provides a device, including:
  • the receiving module is configured to monitor a downlink reference signal sequence, the downlink reference signal sequence corresponds to at least one terminal device, and the at least one terminal device includes a first terminal device; the processing module is configured to monitor whether the downlink reference signal sequence is monitored To determine whether the first terminal device is activated within the activation duration.
  • the activation duration is configured by a network device.
  • the downlink reference signal sequence is a channel state information reference signal CSI-RS sequence.
  • the downlink reference signal sequence is used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a second field, and the second field is used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a third field, and the third field is used to indicate whether the at least one terminal device performs bandwidth part BWP switching,
  • the processing module is specifically configured to monitor the physical downlink channel when the downlink reference signal sequence is monitored before the activation duration; or, when the activation duration When the downlink reference signal sequence is monitored, it enters the dormant state.
  • the device in this aspect is similar to the method in the third aspect, so it has corresponding advantages and will not be repeated.
  • the present application provides a device, including:
  • One or more processors are One or more processors;
  • Memory used to store one or more programs
  • the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of the above-mentioned first aspects.
  • the present application provides a device, including:
  • Memory used to store one or more programs
  • the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of the above-mentioned second aspects.
  • the present application provides a computer-readable storage medium, including a computer program, which when executed on a computer, causes the computer to execute the method described in any one of the first to second aspects.
  • the present application provides a computer program product.
  • the computer program product includes computer program code.
  • the computer program code runs on a computer, the computer executes any one of the first to second aspects described above. Methods.
  • the present application provides a communication system, the communication system includes the device according to any one of the above-mentioned fourth aspects and the device according to any one of the above-mentioned fifth to sixth aspects, or
  • the communication system includes a network device including the device according to any one of the above-mentioned fourth aspects and a terminal device including the device according to any one of the above-mentioned fifth to sixth aspects.
  • FIG. 3 exemplarily shows a schematic diagram of a transmission timing of a downlink reference signal sequence
  • FIG. 4 exemplarily shows a schematic diagram of the sending timing of another downlink reference signal sequence
  • FIG. 7 is a schematic structural diagram of an embodiment of a device on the terminal side of this application.
  • FIG. 8 is a schematic structural diagram of the terminal side device provided by this application.
  • FIG. 9 is a schematic structural diagram of the device on the network side provided by this application.
  • FIG. 10 is a schematic structural diagram of the network equipment provided by this application.
  • FIG. 11 is a schematic structural diagram of the terminal device provided by this application.
  • FIG. 12 is another schematic structural diagram of the terminal device provided by this application.
  • FIG. 13 is another schematic structural diagram of the terminal device provided by this application.
  • At least one (item) refers to one or more, and “multiple” refers to two or more.
  • “And/or” is used to describe the association relationship of associated objects, indicating that there can be three types of relationships, for example, “A and/or B” can mean: only A, only B, and both A and B , Where A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one item (a) or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • Fig. 1 exemplarily shows a schematic structural diagram of a communication system.
  • the communication system includes a network device and a terminal device.
  • the communication system may also include multiple network devices and each The coverage of the network device may include other numbers of terminal devices, which is not limited in the embodiment of the present application.
  • the communication system may also include other network entities such as a network controller and a mobility management entity, and the embodiment of the present application is not limited thereto.
  • the black arrow in Figure 1 indicates that there is a communication connection between the network device and the terminal device, for example, through an air interface.
  • the device on the network side in the communication system can be any network device with wireless transceiver function or a chip that can be set in the network device.
  • the network device includes but is not limited to: evolved Node B (evolved Node B). , ENB), radio network controller (Radio Network Controller, RNC), node B (Node B, NB), base station controller (Base Station Controller, BSC), base transceiver station (Base Transceiver Station, BTS), home base station ( For example, Home evolved NodeB, or Home Node B (HNB), BaseBand Unit (BBU), Access Point (AP), wireless relay node, wireless fidelity (Wireless Fidelity, WIFI) system,
  • the wireless backhaul node, transmission point (Transmission Point, TP), or transmission and reception point (Transmission and Reception Point, TRP), etc. can also be a 5G base station (next Generation Node B, gNB) in a 5G system, a transmission point (TRP or TP), one or
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network devices in the radio access network, or the CU can be divided into network devices in the core network (Core Network, CN), which is not limited here.
  • terminal equipment in the communication system may also be referred to as User Equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user Terminal, terminal, wireless communication device, user agent or user device.
  • UE User Equipment
  • the terminal device in the embodiment of the application may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal device , Wireless terminals in Industrial Control, wireless terminals in self-driving (Self Driving), wireless terminals in remote medical (Remote Medical), wireless terminals in smart grid (Smart Grid), transportation security (Transportation) The wireless terminal in Safety, the wireless terminal in Smart City, the wireless terminal in Smart Home, and so on.
  • the embodiments of this application do not limit the application scenarios.
  • the device on the terminal side in this application may be the aforementioned terminal device and a chip that can be installed in the aforementioned terminal device.
  • FIG. 1 is only for ease of understanding, and schematically shows a communication system, but this should not constitute any limitation to this application.
  • the communication system may also include a larger number of network devices, or may include more The number of terminal devices.
  • the network devices that communicate with different terminal devices can be the same network device or different network devices.
  • the number of network devices that communicate with different terminal devices can be the same or different. This is not limited.
  • a C-DRX is provided in the communication system.
  • the network equipment configures the C-DRX cycle length semi-statically according to service requirements. For example, when the service is sensitive to delay requirements, configure a shorter C-DRX cycle, otherwise, you can configure a longer C-DRX cycle.
  • the network device configures a C-DRX activation duration (on duration) according to the arrival of the service.
  • the terminal device is in the activated state and listens for downlink control signaling
  • a data packet arrives, such as a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), the terminal device receives and demodulates it in time.
  • PDSCH Physical Downlink Shared Channel
  • the terminal device When the C-DRX activation duration is exceeded and no more data packets arrive, the terminal device enters a dormant state, so as to achieve energy saving of the terminal device when no data packet is transmitted.
  • the network device determines that there is no data packet transmission within the C-DRX activation duration, for example, only the Physical Downlink Control Channel (PDCCH) is sent, the network device can also indicate that the C-DRX activation continues through high-level signaling. The terminal equipment within the time period enters the dormant state, further saving energy consumption.
  • PDCCH Physical Downlink Control Channel
  • a wake-up signal (Wake Up Signal, WUS) is provided in the communication system.
  • WUS is used to indicate whether the terminal device wakes up within the duration of C-DRX activation.
  • the WUS instructs the terminal device to wake up within the C-DRX activation duration to receive downlink control information and/or downlink data.
  • WUS instructs the terminal device to sleep for the duration of C-DRX activation, which saves energy and power.
  • the time domain position that technically supports WUS is located before the C-DRX activation duration.
  • the channel state information reference signal (Channel State Information) in the preparation time (Preparation Time, that is, the time between WUS and C-DRX activation duration) of the terminal device.
  • Reference Signal (CSI-RS) issuance and Channel State Information (CSI) reporting, so that terminal equipment and network equipment can perform flexible link adaptation and improve the efficiency of data transmission.
  • CSI-RS Reference Signal
  • CSI-RS Channel State Information
  • the network equipment needs to configure WUS resources and CSI-RS resources, which increases resource overhead on the one hand, and on the other hand, terminal equipment needs to wake up frequently to perform WUS reception and CSI-RS reception respectively, resulting in increased energy consumption.
  • FIG. 2 is a flowchart of Embodiment 1 of the communication method of this application. As shown in FIG. 2, the method in this embodiment may include:
  • Step 201 The network device generates a downlink reference signal sequence.
  • the downlink reference signal sequence is used to indicate whether at least one terminal device is activated within the activation duration.
  • NB-IoT NarrowBand Internet of Things
  • different WUSs correspond to different terminal device groups.
  • 100 terminal devices (numbered 0-99) are divided into 4 groups, for example, terminal devices 0-24 belong to group 0, terminal devices 25-49 belong to group 1, and terminals 50-74 The device belongs to group 2, and the terminal device No. 75-99 belongs to group 3.
  • the network device can set four WUSs.
  • terminal device 0 is to be awakened
  • the WUS corresponding to group 0 can be sent.
  • the terminal devices 0-24 in group 0 all detect the WUS and are all awakened.
  • the 75 terminal devices in groups 1, 2 and 3 will not be awakened because they only monitor the WUS corresponding to the group they belong to.
  • the downlink reference signal sequence used to indicate may be a single terminal device or a group of terminal devices. If it is used to indicate a single terminal device, the downlink reference signal sequence is used to indicate whether the corresponding terminal device is activated within the activation duration. If a group of terminal equipment is indicated, the downlink reference signal sequence is used to indicate whether the corresponding group of terminal equipment is activated within the activation duration.
  • the downlink reference signal sequence is used to indicate whether the terminal device is activated within the activation duration. If the network device wants to send data to a certain terminal device, the network device can wake up the terminal device through the downlink reference signal sequence corresponding to the terminal device. It should be noted that the number of terminals here can be one or more.
  • the downlink reference signal sequence may be user specific (UE specific). The downlink reference signal sequences between different terminal devices are different, or the WUS carried by the downlink reference signal sequences between different terminal devices are different.
  • different terminal devices correspond to different sequence groups, and the sequence groups include the corresponding user equipment ( User Equipment (UE) multiple downlink reference signal sequences scrambled by identity (ID) to ensure low correlation of downlink reference signal sequences corresponding to different terminal equipment.
  • UE User Equipment
  • ID identity
  • the terminal device can only detect and correctly interpret the downlink reference signal sequence in the corresponding sequence group.
  • the terminal device can learn the required downlink reference signal sequence reception time according to the protocol provisions or the information transmitted by the configuration information. The actions of the corresponding network devices will not be repeated.
  • the downlink reference signal sequence is used to indicate whether a group of terminal equipment is activated within the activation duration.
  • the group of terminal devices may include one or more terminal devices.
  • at least one terminal device to be awakened by the downlink reference signal sequence may include one or more terminal devices, the at least one terminal device belongs to the same group, and different groups correspond to different WUS signals. That is, if the network device wants to send data to a group of terminal devices, the network device can wake up one or more terminal devices in the group through the downlink reference signal sequence corresponding to the group of terminal devices.
  • the feature of this embodiment is that the downlink reference signal sequence is group/set specific. The downlink reference signal sequences between different groups are different, or the WUS carried by the downlink reference signal sequences between different groups are different. One or more terminal devices in the same group receive the same downlink reference signal sequence.
  • the network device may send the grouping information and other configuration information to the terminal device together.
  • the grouping information may include group IDs, and different group IDs correspond to different groups.
  • Other configuration information can include the scrambling code identifier of the downlink reference signal sequence, the predefined first moment (that is, where the terminal device receives or monitors the downlink reference signal sequence) or the first period (that is, the period of the terminal device starting at a certain starting moment). Receive or monitor the downlink reference signal sequence within time).
  • the network device scrambles the downlink reference signal sequence in the time domain, and the scrambling code corresponding to each group (for example, the orthogonal mask OCC in the time domain) , The identification information of the group) is different.
  • the terminal devices in the same group receive a downlink reference signal sequence
  • the downlink reference signal sequence is group specific
  • the terminal devices in the same group correspond to the same downlink reference signal Sequence or the same downlink reference sequence group.
  • UE 1 and UE 2 belong to the same group, and there are 4 downlink reference signal sequences corresponding to the group, and each downlink reference signal sequence carries 2 bits of information to indicate whether UE 1 and UE 2 in the group are active, Whether to report CSI.
  • different terminal devices may interpret the information carried by the downlink reference signal sequence differently.
  • the UE 1 learns whether to activate or trigger CSI reporting from the first 2 bits, and the UE 2 learns whether to activate or trigger CSI reporting from the last 2 bits.
  • the bits to be interpreted by each terminal device in the same group can be configured by the network device.
  • the downlink reference signal sequence may be a channel state information reference signal (Channel State Information Reference Signal, CSI-RS) sequence.
  • CSI-RS sequence is used for channel state information measurement, for example, it can be used for: channel quality measurement, beam management, time offset and frequency offset tracking, and/or radio resource management.
  • the terminal device measures the channel state based on the CSI-RS sequence to obtain CSI, and determines whether to report CSI according to the CSI-RS sequence. If the CSI-RS sequence instructs the terminal device to report CSI, the terminal device reports the measured CSI.
  • -RS sequence indicates that the terminal device does not report CSI, then the terminal device only measures the CSI obtained, and does not need to report CSI.
  • the network device When the network device configures CSI-RS periodically, the network device can instruct the terminal device to perform periodic or semi-continuous or aperiodic CSI reporting; when the network device configures the CSI-RS semi-continuously, the network device can instruct the terminal Semi-continuous or aperiodic CSI reporting; when the network device is configured aperiodic, the network device instructs the terminal device to report aperiodic CSI.
  • reporting periodic CSI report broadband CSI information on PUCCH; when reporting semi-persistent CSI, optionally, perform broadband or sub-band CSI reporting (fine sub-carrier-level CSI reporting).
  • CSI It can be transmitted on PUSCH or PUCCH; when aperiodic CSI is reported, optionally, broadband or subband CSI reporting is performed, and CSI information is transmitted via PUSCH.
  • the information carried by the downlink reference signal sequence includes a first field, and the first field is used to indicate whether at least one terminal device is activated within the activation duration.
  • the downlink reference signal sequence may also be used to indicate whether to trigger at least one terminal device to report CSI.
  • the information carried by the downlink reference signal sequence includes a second field, and the second field is used to indicate whether to trigger at least one terminal device to report CSI.
  • the second field can be set to the first value, such as 1.
  • the second field can be set to the second value, such as 0 ;
  • the first value and the second value are different and are one of 0 and 1, respectively.
  • the information carried by the downlink reference signal sequence includes a third field, and the third field is used to indicate whether at least one terminal device performs bandwidth part BWP switching.
  • BWP switching can refer to the definition of the prior art.
  • the network device instructs the terminal device to switch the BWP through the third field in the downlink reference signal based on the learned conditions of the multiple BWP channels. For example, the terminal device is instructed to switch to another BWP whose channel quality is better than the current BWP to ensure better channel transmission capability.
  • the third field includes one or more bits, and the one or more bits are used to indicate the target BWP of the handover.
  • the third field includes 2 bits, so that the network device can instruct the terminal device to switch among the candidate no more than 4 BWPs.
  • the downlink reference signal sequence generated by the network device includes 16 symbols and can carry 4 bits of information. Therefore, there are a total of 16 available downlink reference signal sequences, corresponding to a 4-bit binary string.
  • the network device can use the following method to set each bit in the aforementioned 4-bit binary string:
  • the first bit is used to indicate whether the terminal device is activated within the activation duration (on duration).
  • the value of the first bit can be 0 or 1;
  • the second bit is used to indicate whether to trigger at least one terminal device to report channel state information (Channel State Information, CSI).
  • the CSI in the embodiments of the present application includes but is not limited to at least one of the following information: Precoding Matrix Indicator (PMI), Rank Indicator (RI), and Channel Quality Indicator (Channel Quality Indicator) At least one of Indicator, CQI), CSI-RS Resource Indicator (CSI-RS Resource Indicator, CRI), and Layer Indication (Layer Indication, LI), which is not limited in the embodiment of the present application.
  • the value of the second bit can be 0 or 1;
  • Bits 3-4 are used to indicate whether at least one terminal device performs Bandwidth Partial (BWP) switching.
  • BWP Bandwidth Partial
  • bits 3-4 can be 00, 01, 10, or 11.
  • the first bit, the second bit, the third bit, and the fourth bit are just different bits, and the order of them can be changed.
  • the 4-bit information carried by the downlink reference signal sequence is "1101", where the first bit "1" indicates that the terminal device is activated during the activation duration; the second bit "1" indicates that CSI reporting is triggered; third and fourth bits Bit "01" indicates to monitor the second BWP.
  • the length of the downlink reference signal sequence in the above example is 16, which can carry 4 bits of information, but this application does not specifically limit the length of the downlink reference signal sequence, so the network device can generate downlink reference signals of other lengths Sequences, to carry other number of bits of information, can also give more or less effects to each bit of the aforementioned information.
  • the length of the downlink reference signal sequence is 64, which can carry 6 bits of information.
  • the 5th bit can be used to indicate the number of antennas to switch (close some antenna RF channels to save power consumption), and the 6th bit can be used to indicate Secondary carrier switching, etc.
  • multiple bits may also be used to indicate the related function together, so that multiple situations of the corresponding function can be presented through the combination of values of multiple bits.
  • the downlink reference signal sequence may include one of the above-mentioned fields, such as the first field; it may also include two of them, such as the first and third fields; it may also include the three or more fields. Or the first field and the third field may be the same field, and corresponding instructions are given.
  • Step 202 The network device sends a downlink reference signal sequence to at least one terminal device, and the at least one terminal device includes the first terminal device.
  • the network device may send a downlink reference signal sequence to a certain terminal device, and the downlink reference signal sequence is used to wake up the terminal device. That is, if the network device wants to send data to a certain terminal device, the network device can send a downlink reference signal sequence corresponding to the terminal device to wake up the terminal device. It should be noted that the number of terminals here can be one or more.
  • the downlink reference signal sequence is UE-specific, and the downlink reference signal sequence between different UEs is different, or the WUS carried by the downlink reference signal sequence between different UEs is different.
  • the terminal device can learn the receiving time of the required downlink reference signal sequence according to the protocol provisions or the information transmitted by the configuration information, and detect the downlink reference signal sequence at the receiving time.
  • the network device may send a downlink reference signal sequence to one or more terminal devices belonging to the same group to wake up the one or more terminal devices. That is, if the network device wants to send data to a group of terminal devices, the network device can send a downlink reference signal sequence corresponding to the group of terminal devices to wake up one or more terminal devices in the group.
  • the downlink reference signal sequence is group/set specific. The downlink reference signal sequences between different groups are different, or the WUS carried by the downlink reference signal sequences between different groups are different.
  • One or more terminal devices in the same group receive the same downlink reference signal sequence.
  • the first terminal device is activated at the first moment, and the first moment is before the activation duration, that is, the first terminal device will change from the non-working state (for example, standby) to the working state at the first moment before the activation duration.
  • Receive the downlink reference signal sequence Further, the remaining time after receiving the downlink reference signal sequence (after the first time and before the activation duration) enters the non-working state. Further, if the downlink reference signal sequence indicates activation during the activation duration, the first terminal device enters the activation duration and switches from the non-working state to the working state, and monitors the physical downlink control channel (for example, at the PDCCH candidate occasion) PDCCH).
  • the first terminal device remains in the non-working state after the first moment.
  • the terminal equipment changes from the non-working state to the working state at a certain time before the activation duration to receive the downlink reference signal sequence.
  • the downlink reference signal sequence can realize the function of WUS, that is, when there is downlink data transmission and the terminal is required
  • the terminal device is awakened only when the device monitors and receives, which reduces the power consumption of the terminal device and improves the efficiency of communication.
  • the downlink reference signal sequence can also indicate that the terminal device is not activated, so that the terminal device enters non-working at the rest of the time after receiving the downlink reference signal sequence State, further reduce the power consumption of terminal equipment.
  • the first terminal device is activated at the first moment, and the first moment is within the activation duration, that is, the first terminal device will be in the working state at the first moment of the activation duration to receive the downlink reference signal sequence. Further, if the downlink reference signal sequence indicates activation during the activation duration, the first terminal device maintains the working state at the remaining moments after receiving the downlink reference signal sequence (after the first moment and before the activation duration ends), and is in the PDCCH candidate The opportunity (PDCCH candidate occasion) monitors the physical downlink control channel (for example, PDCCH). If the downlink reference signal sequence indicates that it is not activated during the activation duration, the first terminal device enters the non-working state after the first moment.
  • PDCCH physical downlink control channel
  • the terminal device changes from a non-working state to a working state during the activation duration, and receives a downlink reference signal sequence at a certain time during the activation duration.
  • the downlink reference signal sequence can realize the function of WUS and instruct the terminal device Activate or deactivate, indicating that the terminal device does not need to change from the non-working state to the working state again when it is activated, and it can remain in the working state for the duration of activation, reducing the power consumption of the terminal device, improving the efficiency of communication, and indicating the terminal device when it is not activated It enters the non-working state at the rest of the time after receiving the downlink reference signal sequence to reduce the power consumption of the terminal device.
  • the foregoing first moment may be configured by a network device.
  • the first moment may be configured through high-level signaling, and the high-level signaling may be radio resource control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • this embodiment provides an explicit implementation, that is, the above-mentioned first field is used to indicate whether the terminal device is activated within the activation duration.
  • Step 203 The terminal device determines whether to activate within the activation duration.
  • the terminal device parses the downlink reference signal sequence when receiving the downlink reference signal sequence configured for itself by the network device.
  • the downlink reference signal sequence is group/set specific, when the terminal device receives the downlink reference signal sequence configured by the network device to the group to which it belongs, the downlink reference to the group to which it belongs according to the scrambling code configured by the network device After the signal sequence is descrambled, the downlink reference signal sequence needed by the user can be identified, and the downlink reference signal sequence can be analyzed.
  • the scrambling code may be the identification information of the terminal, for example, the user equipment UE ID. The terminal device obtains the corresponding downlink reference signal sequence. You may refer to the statement in step 201, which is not repeated here.
  • the first terminal device After receiving the downlink reference signal sequence at the first moment (the first moment is before the activation duration), the first terminal device acquires at least one bit of information carried by the downlink reference signal sequence, and then Perform the corresponding operation according to the value of each bit in the information: If the first bit is 1, the first terminal device changes from the non-working state to the working state within the activation duration, and monitors at the PDCCH candidate occasion (PDCCH candidate occasion) Physical downlink control channel (for example, PDCCH).
  • PDCCH candidate occasion Physical downlink control channel
  • the PDCCH candidate timing can be configured by the network device; the second bit is 1, the first terminal device performs channel measurement according to the downlink reference signal sequence and reports the CSI at the specified time, or, if the second bit is 0, the first terminal device can follow the downlink Channel measurement is performed on the reference signal sequence, but there is no need to report CSI. If the first bit is 0, the first terminal device enters the non-operating state after receiving the downlink reference signal sequence; the second bit is 1, the first terminal device performs channel measurement according to the downlink reference signal sequence and reports CSI at the specified time, or , The second bit is 0, the first terminal device can perform channel measurement according to the downlink reference signal sequence, but does not need to report CSI.
  • the first terminal device after receiving the downlink reference signal sequence at the first moment (the first moment is within the activation duration), acquires at least one bit of information carried by the downlink reference signal sequence, and then Perform corresponding operations according to the value of each bit in the information: if the first bit is 1, the first terminal device enters the non-operating state after receiving the downlink reference signal sequence; if the first bit is 0, the first terminal device is receiving The remaining moments after the downlink reference signal sequence (after the first moment and before the end of the activation duration) monitor the physical downlink control channel (for example, PDCCH) at the PDCCH candidate occasion (PDCCH candidate occasion); the second bit is 1, the first terminal device The downlink reference signal sequence performs channel measurement and reports CSI at a specified time, or, if the second bit is 0, the first terminal device can perform channel measurement according to the downlink reference signal sequence, but does not need to report CSI.
  • PDCCH physical downlink control channel
  • bit position in the above example is only an example, and the value of the bit position may also adopt other settings, which is not specifically limited in this application.
  • the network device indicates the WUS information through the CSI-RS sequence, so that the downlink reference signal sequence can realize the WUS function.
  • the terminal device is awakened only when there is downlink data transmission and the terminal device is required to monitor and receive. Because there is no need to separately send the downlink reference signal sequence and the additional wake-up signal, the transmitting side, such as network equipment, and the receiving side, such as terminal equipment, save power. Further, the processing flow is simplified, and the efficiency of communication is improved.
  • FIG. 5 is a flowchart of Embodiment 2 of the communication method of this application. As shown in FIG. 5, the method of this embodiment may include:
  • Step 501 The network device generates a downlink reference signal sequence.
  • Step 502 The network device sends a downlink reference signal sequence to at least one terminal device, and the at least one terminal device includes the first terminal device.
  • step 502 is similar to that of step 202 above.
  • this embodiment provides an implicit implementation, that is, the network device will only send data packets to the terminal device when there is a data packet to be sent to the terminal device.
  • the network device When there is no data packet to be sent to the terminal device, the network device will not send the downlink reference signal sequence.
  • the terminal device receives the downlink reference signal sequence, which indicates that the network device has a data packet to be sent to the terminal device.
  • Step 503 The terminal device determines whether to activate within the activation duration according to whether the downlink reference signal sequence is monitored.
  • step 503 is similar to the above step 203.
  • the terminal device determines whether activation is required according to whether to monitor (ie, try blind detection) to the downlink reference signal sequence.
  • the first terminal device activates and monitors the downlink reference signal sequence at the first moment (the first moment is before the activation duration), and if the downlink reference signal sequence is monitored, the first terminal device is activating Change from non-working state to working state within the duration, that is, monitor the physical downlink control channel (such as PDCCH) at the PDCCH candidate occasion (PDCCH candidate occasion); if the downlink reference signal sequence is not monitored, the first terminal device is receiving the downlink reference signal After the sequence, it enters the non-working state and keeps the non-working state for the active duration, that is, the physical downlink channel (such as PDCCH) is not monitored.
  • the physical downlink channel such as PDCCH
  • the first terminal device activates and monitors the downlink reference signal sequence at the first moment (the first moment is within the activation duration). If the downlink reference signal sequence is monitored, the first terminal device is receiving At the remaining moments after the downlink reference signal sequence (after the first moment and before the activation duration ends), the physical downlink control channel (such as PDCCH) will be monitored at the PDCCH candidate occasion (PDCCH candidate occasion); if the downlink reference signal sequence is not monitored, the first A terminal device enters a non-working state after receiving the downlink reference signal sequence.
  • the physical downlink control channel such as PDCCH
  • the first terminal device determines to activate within the activation duration according to listening to the downlink reference signal sequence.
  • the relationship between the downlink reference signal sequence and the corresponding activation duration may be sent by the network through configuration information, or agreed by both parties.
  • the first terminal device determines to activate within the activation duration according to the fact that the downlink reference signal sequence is not monitored.
  • the network device can still send the downlink reference signal sequence to the first terminal device, and the first terminal device will listen to the downlink reference signal sequence.
  • the downlink reference signal sequence is received, it enters the dormant state, but the first terminal device will perform channel measurement and CSI report according to the downlink reference signal sequence to prevent the first terminal device from sleeping for a long time, and the channel changes during the dormant period cannot be reported in time Problems with network equipment.
  • Fig. 6 is a schematic structural diagram of an embodiment of a device on the network side of this application.
  • the device may be the aforementioned network device or a chip or integrated circuit that can be installed in the network device.
  • the apparatus of this embodiment may include: a processing module 601 and a sending module 602, where the processing module 601 is configured to generate a downlink reference signal sequence, and the downlink reference signal sequence is used to indicate whether at least one terminal device is activated within the activation duration ; Sending module 602, configured to send the downlink reference signal sequence to the at least one terminal device.
  • the downlink reference signal sequence is a channel state information reference signal CSI-RS sequence.
  • the downlink reference signal sequence is also used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a first field, and the first field is used to indicate whether the at least one terminal device is activated within the activation duration.
  • the information carried by the downlink reference signal sequence includes a third field, and the third field is used to indicate whether the at least one terminal device performs bandwidth part BWP switching.
  • the sending module 602 is specifically configured to send the downlink reference signal sequence to the at least one terminal device before the activation duration or within the activation duration.
  • the device in this embodiment can be used to implement the technical solutions of any of the method embodiments shown in FIGS. 2-5, and its implementation principles and technical effects are similar, and will not be repeated here.
  • the downlink reference signal sequence is also used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a first field, and the first field is used to indicate whether the at least one terminal device is activated within the activation duration.
  • the information carried by the downlink reference signal sequence includes a second field, and the second field is used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a third field, and the third field is used to indicate whether the at least one terminal device performs bandwidth part BWP switching,
  • the receiving module 701 is specifically configured to receive the downlink reference signal sequence before the activation duration or within the activation duration.
  • the processing module 702 is further configured to, when the downlink reference signal sequence is received before the activation duration, if the downlink reference signal sequence indicates that the at least one terminal device is If activated within the activation duration, the physical downlink channel is monitored; or, when the downlink reference signal sequence is received within the activation duration, if the downlink reference signal sequence indicates that the at least one terminal device is in the If it is not activated within the activation duration, it will enter the dormant state within the activation duration.
  • the activation duration is configured by a network device.
  • the downlink reference signal sequence is a channel state information reference signal CSI-RS sequence.
  • the downlink reference signal sequence is used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a second field, and the second field is used to indicate whether to trigger the at least one terminal device to report channel state information CSI.
  • the information carried by the downlink reference signal sequence includes a third field, and the third field is used to indicate whether the at least one terminal device performs bandwidth part BWP switching,
  • the receiving module 701 is specifically configured to monitor the downlink reference signal sequence before the activation duration or during the activation duration.
  • the processing module 702 is specifically configured to monitor the physical downlink channel when the downlink reference signal sequence is monitored before the activation duration; or, when the activation duration When the downlink reference signal sequence is monitored internally, it enters a dormant state within the activation duration.
  • the device in this embodiment can be used to implement the technical solutions of any of the method embodiments shown in FIGS. 2-5, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 8 is a schematic structural diagram of the terminal side device provided by this application.
  • the device 800 includes a processor 801 and a transceiver 802.
  • the device may be a terminal device or a chip or an integrated circuit in the terminal device.
  • the memory 803 is used to store a computer program.
  • the processor 801 is configured to execute a computer program stored in the memory 803, so as to realize the function of the processing module 702 in the device embodiment shown in FIG. 7.
  • the transceiver 802 is used to implement the function of the receiving module 701 in the device embodiment shown in FIG. 7.
  • the apparatus 800 in this embodiment when the apparatus 800 in this embodiment is a terminal device, it may further include an antenna 804 for transmitting the signal output by the transceiver 802.
  • the transceiver 802 receives signals through an antenna.
  • the device 800 in this embodiment when the device 800 in this embodiment is a terminal device, it may further include a power supply 805 for providing power to various devices or circuits in the device.
  • a power supply 805 for providing power to various devices or circuits in the device.
  • the device 800 may also include an input unit 806, a display unit 807 (also can be considered as an output unit), an audio circuit 808, a camera 809, a sensor 810, etc.
  • an input unit 806 a display unit 807 (also can be considered as an output unit), an audio circuit 808, a camera 809, a sensor 810, etc.
  • the audio circuit may also include a speaker 8081, a microphone 8082, etc., which will not be described in detail.
  • FIG. 9 is a schematic structural diagram of a device on the network side provided by this application.
  • the device 900 includes an antenna 901, a radio frequency device 902, and a baseband device 903.
  • the antenna 901 is connected to the radio frequency device 902.
  • the radio frequency device 902 receives the signal from the terminal device through the antenna 901, and sends the received signal to the baseband device 903 for processing.
  • the baseband device 903 In the downlink direction, the baseband device 903 generates a signal that needs to be sent to the terminal device, and sends the generated signal to the radio frequency device 902.
  • the radio frequency device 902 transmits the signal through the antenna 901.
  • the baseband device 903 may include one or more processing units 9031.
  • the processing unit 9031 may specifically be a processor.
  • the baseband device 903 may further include one or more storage units 9032 and one or more communication interfaces 9033.
  • the storage unit 9032 is used to store computer programs and/or data.
  • the communication interface 9033 is used to exchange information with the radio frequency device 902.
  • the storage unit 9032 may specifically be a memory, and the communication interface 9033 may be an input/output interface or a transceiver circuit.
  • the storage unit 9032 may be a storage unit on the same chip as the processing unit 9031, that is, an on-chip storage unit, or a storage unit on a different chip from the processing unit 9031, that is, an off-chip storage unit. This application does not limit this.
  • the baseband device 903 may be used to implement the functions of the processing module 601 in the device embodiment shown in FIG. 6.
  • the radio frequency device 902 may be used to implement the function of the sending module 602 in the device embodiment shown in FIG. 6.
  • the processing unit 9031 When data needs to be sent, the processing unit 9031 performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency device 902.
  • the radio frequency device 902 performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna 901.
  • the radio frequency device 902 receives the radio frequency signal through the antenna 901, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processing unit 9031, and the processing unit 9031 converts the baseband signal into data and processes the data .
  • only one storage unit and processing unit are shown in the figure. In actual equipment products, there may be one or more processing units and one or more storage units.
  • the storage unit may also be referred to as a storage medium or a storage device.
  • the storage unit may be set independently of the processing unit, or may be integrated with the processing unit, which is not limited in the embodiment of the present application.
  • the network device may be as shown in FIG. 10, and the network device 1000 includes one or more radio frequency units, such as a remote radio unit (RRU) 1010 and one or more radio units.
  • a baseband unit (BBU) also referred to as a digital unit, DU) 1020.
  • BBU baseband unit
  • the RRU 1010 may be called a transceiver module.
  • the transceiver module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 1011 and a radio frequency unit 1012.
  • the RRU 1010 part is mainly used for receiving and sending of radio frequency signals and conversion of radio frequency signals and baseband signals, for example, for sending instruction information to terminal equipment.
  • the BBU 1020 part is mainly used to perform baseband processing, control the base station, and so on.
  • the RRU 1010 and the BBU 1020 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 1020 is the control center of the base station, and may also be called a processing module, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU processing module
  • the BBU may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.
  • the BBU 1020 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) of a single access standard, or can support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 1020 also includes a memory 1021 and a processor 1022.
  • the memory 1021 is used to store necessary instructions and data.
  • the processor 1022 is used to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the memory 1021 and the processor 1022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the terminal device may be as shown in FIG. 11, and the terminal device includes a transceiver unit 1110 and a processing unit 1120.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiving unit 1110 can be regarded as the receiving unit
  • the device for implementing the sending function in the transceiving unit 1110 can be regarded as the sending unit, that is, the transceiving unit 1110 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 1110 is used to perform the sending and receiving operations on the terminal device side in the foregoing method embodiment, and the processing unit 1120 is used to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.
  • the transceiving unit 1110 is used to perform the sending operation on the terminal device side in step 202/502, and/or the transceiving unit 1110 is also used to perform other transceiving steps on the terminal device side in the embodiment of the present application.
  • the processing unit 1120 is configured to execute step 203/503, and/or the processing unit 1120 is further configured to execute other processing steps on the terminal device side in the embodiment of the present application.
  • the chip device may include a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit and/or a communication interface;
  • the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip.
  • the device is a network-side device, the functions of the aforementioned units included in the device may refer to the description of the corresponding modules in FIG. 6.
  • the device is a terminal-side device, the functions of the aforementioned units included in the device may refer to the description of the corresponding modules in FIG. 7.
  • the terminal device When the device in this embodiment is a terminal device, the terminal device may also be as shown in FIG. 12.
  • the terminal device includes a processor 1210, a data sending processor 1220, and a data receiving processor 1230.
  • the processing module in the foregoing embodiment may be the processor 1210 in FIG. 12, and completes corresponding functions.
  • the sending module/receiving module in the foregoing embodiment may be the sending data processor 1220 and/or the receiving data processor 1230 in FIG. 12.
  • the channel encoder and the channel decoder are shown in FIG. 12, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are merely illustrative.
  • the processing device 1300 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem.
  • the device in this embodiment can be used as the modulation subsystem.
  • the modulation subsystem may include a processor 1303 and an interface 1304.
  • the processor 1303 completes the function of the above-mentioned processing module
  • the interface 1304 completes the function of the above-mentioned sending module/receiving module.
  • the modulation subsystem includes a memory 1306, a processor 1303, and a program stored in the memory 1306 and running on the processor. When the processor 1303 executes the program, the terminal device side in the above method embodiment is implemented. Methods.
  • the memory 1306 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 1300, as long as the memory 1306 can be connected to the The processor 1303 is fine.
  • a computer-readable storage medium is provided with instructions stored thereon, and when the instructions are executed, the method on the terminal device side or the network device side in the foregoing method embodiment is executed.
  • the processor mentioned in the above embodiments 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 processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a 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 field programmable gate array
  • 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 execution and completion by a hardware encoding processor, or execution and completion by a combination of hardware and software modules in the encoding 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 mentioned in the above embodiments may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • 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 serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, 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 may 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.
  • the functional units in the various embodiments 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 the present application essentially or the part that contributes to the existing technology 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 (personal computer, server, or 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 disks or optical disks and other media that can store program codes. .

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Abstract

本申请提供一种通信方法及装置，涉及通信技术领域，尤其涉及机器类型通信MTC或者窄带物联网NB-IoT领域。本申请通信方法中，网络设备生成下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活；网络设备向所述至少一个终端设备发送所述下行参考信号序列，所述至少一个终端设备包括第一终端设备；所述第一终端设备根据所述下行参考信号序列的指示确定是否在所述激活持续时间内激活。通过下行参考序列，例如信道状态信息参考信号CSI-RS序列，指示至少一个终端设备是否在激活持续时间内激活，实现了信息复用，在节约信令的同时降低终端设备的功耗，并提高通信的效率。

Description

通信方法及装置 技术领域
本申请涉及通信技术，尤其涉及一种通信方法及装置。
背景技术
新无线(New Radio，NR)接入技术协议中，当终端设备和网络设备完成上下行同步之后，处于连接态的终端设备将进行上下行数据的传输，包括数据的接收和发送。如果业务数据包是突发性传输的，那么到达终端设备的两个业务数据包之间可能会间隔很长的时间。而如果终端设备在每个时隙(slot)都监听下行控制信令，就可以在接收下行控制信令后以最短的时延依据下行控制信令的指示，正确接收业务数据包，包括上行调度授权或者下行发送的数据。但终端设备为了监听下行控制信令一直处于激活状态，将导致较大的能耗，尤其是在突发的业务数据包较少且间隔时间较长时。
为了降低终端设备的能耗，NR系统引入了连接态-非连续接收(Connected-Discontinous Receving，C-DRX)。网络设备依据业务需求，半静态的配置C-DRX的循环长度，在每个C-DRX循环内，配置一个C-DRX激活持续时间(on duration time)，在C-DRX激活持续时间内终端设备处于激活态，监听下行控制信令，而在超过C-DRX激活持续时间且再无数据包到达时，终端设备进入休眠状态，以实现在无数据包传输时终端设备的节能。
在每个循环内的每个激活持续时间内保持激活态，也可能会给终端设备带来额外的功率损耗，尤其是在网络设备发送较少数据包或者未发送数据包的场景下。基于此，需要一种灵活的机制控制或管理终端设备的状态切换，以进一步降低功耗并提高通信效率。
发明内容
本申请提供一种通信方法及装置，通过下行参考信号序列指示苏醒信息，降低终端设备的功耗，并提高通信的效率。
第一方面，本申请提供一种通信方法，包括：
生成下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活；向所述至少一个终端设备发送所述下行参考信号序列。
网络设备通过下行参考信号序列承载苏醒信号(Wake Up Signal，WUS)信息，使下行参考信号序列可以实现WUS的功能。在有下行数据发送、需要终端设备监听接收时才唤醒终端设备。因为不需要分别发送下行参考信号序列以及额外的苏醒信号，所以，发送侧，如网络设备，以及接收侧，如终端设备，节省了功率。进一步，简化了处理流程，提高了通信的效率。
在一种可能的实现方式中，所述下行参考信号序列为信道状态信息参考信号(Channel State Information，CSI-RS)序列。
采用CSI-RS序列作为下行参考信号序列，可以复用已有的序列，减少信令开销。
在一种可能的实现方式中，所述下行参考信号序列还用于指示是否触发所述至少一个终端设备上报信道状态信息(Channel State Information，CSI)。
网络设备通过CSI-RS序列承载WUS信息，使下行参考信号序列既可以实现WUS的 功能，在有下行数据发送、需要终端设备监听接收时才唤醒终端设备，降低终端设备的功耗，又可以实现CSI-RS的功能，用于信道状态的测量并触发终端设备上报CSI，因此，能够提高通信的效率。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活持续时间内激活。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换。
在一种可能的实现方式中，所述向所述至少一个终端设备发送所述下行参考信号序列，包括：在所述激活持续时间之前或者在所述激活持续时间内向所述至少一个终端设备发送所述下行参考信号序列。在一种可能的实现方式中，所述激活持续时间是通过网络设备配置的。
第二方面，本申请提供一种通信方法，包括：
接收下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活，所述至少一个终端设备包括第一终端设备；确定所述第一终端设备是否在所述激活持续时间内激活。
网络设备通过下行参考信号序列承载WUS信息，使下行参考信号序列可以实现WUS的功能。在有下行数据发送、需要终端设备监听接收时才唤醒终端设备。因为不需要分别发送下行参考信号序列以及额外的苏醒信号，所以，发送侧，如网络设备，以及接收侧，如终端设备，节省了功率。进一步，简化了处理流程，提高了通信的效率。
在一种可能的实现方式中，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列，可以复用已有的CSI-RS序列，减少信令开销。
在一种可能的实现方式中，所述下行参考信号序列还用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
网络设备通过CSI-RS序列承载WUS信息，使下行参考信号序列既可以实现WUS的功能，在有下行数据发送、需要终端设备监听接收时才唤醒终端设备，降低终端设备的功耗，又可以实现CSI-RS的功能，用于信道状态的测量并触发终端设备上报CSI，因此，能够提高通信的效率。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活持续时间内激活。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换，
在一种可能的实现方式中，所述接收下行参考信号序列，包括：在所述激活持续时间之前或者在所述激活持续时间内接收所述下行参考信号序列。
在一种可能的实现方式中，还包括：当在所述激活持续时间之前接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内激 活，则监听物理下行信道；或者，当在所述激活持续时间内接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内不激活，则进入休眠状态。
在一种可能的实现方式中，所述激活持续时间是通过网络设备配置的。
第三方面，本申请提供一种通信方法，包括：
监听下行参考信号序列，所述下行参考信号序列对应至少一个终端设备，所述至少一个终端设备包括第一终端设备；根据是否监听到所述下行参考信号序列，确定所述第一终端设备是否在激活持续时间内激活。
这样的方法具备前述第一方面的方法的优点。另外，因为是否监听到所述下行参考信号序列，可以指示是否在激活持续时间内激活；而不需要额外的信令，所以节省了信令开销。
可以理解，激活持续时间可以通过网络设备配置。或者，若通过通信双方协商或者遵从预先的定义或者约定，比如表格、对应关系，也可以节约信令。
在一种可能的实现方式中，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列，可以复用已有的CSI-RS序列，减少信令开销。
在一种可能的实现方式中，所述下行参考信号序列用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。这样终端可以根据这个指示触发动作。
这样的方法具备前述第一方面的方法的相似优点，不再赘述。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换，
在一种可能的实现方式中，所述监听下行参考信号序列，包括：在所述激活持续时间之前或者在所述激活持续时间内监听所述下行参考信号序列。
在一种可能的实现方式中，还包括：当在所述激活持续时间之前监听到所述下行参考信号序列时，终端设备在激活持续时间内激活，监听物理下行信道；或者，当在所述激活持续时间内监听到所述下行参考信号序列时，在所述激活持续时间内进入休眠状态。
第四方面，本申请提供一种装置，包括：
处理模块，用于生成下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活；发送模块，用于向所述至少一个终端设备发送所述下行参考信号序列。在一种可能的实现方式中，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
在一种可能的实现方式中，所述下行参考信号序列还用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活持续时间内激活。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第三字段，所述第 三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换。
在一种可能的实现方式中，所述发送模块，具体用于在所述激活持续时间之前或者在所述激活持续时间内向所述至少一个终端设备发送所述下行参考信号序列。
本方面的装置类似第一方法的方法，所以具有对应的优点，不再赘述。
第五方面，本申请提供一种装置，包括：
接收模块，用于接收下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活，所述至少一个终端设备包括第一终端设备；处理模块，用于确定所述第一终端设备是否在所述激活持续时间内激活。
在一种可能的实现方式中，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
在一种可能的实现方式中，所述下行参考信号序列还用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活持续时间内激活。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换，
在一种可能的实现方式中，所述接收模块，具体用于在所述激活持续时间之前或者在所述激活持续时间内接收所述下行参考信号序列。
在一种可能的实现方式中，所述处理模块，还用于当在所述激活持续时间之前接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内激活，则监听物理下行信道；或者，当在所述激活持续时间内接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内不激活，则进入休眠状态。
本方面的装置类似第二方面的方法，所以具有对应的优点，不再赘述。
第六方面，本申请提供一种装置，包括：
接收模块，用于监听下行参考信号序列，所述下行参考信号序列对应至少一个终端设备，所述至少一个终端设备包括第一终端设备；处理模块，用于根据是否监听到所述下行参考信号序列，确定所述第一终端设备是否在激活持续时间内激活。
在一种可能的实现方式中，所述激活持续时间是通过网络设备配置的。
在一种可能的实现方式中，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
在一种可能的实现方式中，所述下行参考信号序列用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换，
在一种可能的实现方式中，所述接收模块，具体用于在所述激活持续时间之前或者在所述激活持续时间内监听所述下行参考信号序列。
在一种可能的实现方式中，所述处理模块，具体用于当在所述激活持续时间之前监听到所述下行参考信号序列时，监听物理下行信道；或者，当在所述激活持续时间内监听到所述下行参考信号序列时，进入休眠状态。
本方面的装置类似第三方面的方法，所以具有对应的优点，不再赘述。
第七方面，本申请提供一种装置，包括：
一个或多个处理器；
存储器，用于存储一个或多个程序；
当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如上述第一方面中任一项所述的方法。
第八方面，本申请提供一种装置，包括：
一个或多个处理器；
存储器，用于存储一个或多个程序；
当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如上述第二方面中任一项所述的方法。
第九方面，本申请提供一种计算机可读存储介质，包括计算机程序，所述计算机程序在计算机上被执行时，使得所述计算机执行上述第一至二方面中任一项所述的方法。
第十方面，本申请提供一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述第一至二方面中任一项所述的方法。
第十一方面，本申请提供一种通信系统，所述通信系统包括上述第四方面中任一项所述的装置和上述第五至六方面中任一项所述的装置，或者，所述通信系统包括包含上述第四方面中任一项所述的装置的网络设备和包含上述第五至六方面中任一项所述的装置的终端设备。
附图说明
图1示例性的示出了一个通信系统的结构示意图；
图2为本申请通信方法实施例一的流程图；
图3示例性的示出了一种下行参考信号序列的发送时序的示意图；
图4示例性的示出了另一种下行参考信号序列的发送时序的示意图；
图5为本申请通信方法实施例二的流程图；
图6为本申请网络侧的装置实施例的结构示意图；
图7为本申请终端侧的装置实施例的结构示意图；
图8为本申请提供的终端侧的装置的一个示意性结构图；
图9为本申请提供的网络侧的装置的一个示意性结构图；
图10为本申请提供的网络设备的一个示意性结构图；
图11为本申请提供的终端设备的一个示意性结构图；
图12为本申请提供的终端设备的另一个示意性结构图；
图13为本申请提供的终端设备的又一个示意性结构图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请中的附图，对本申请中的技术方案进行清楚、完整地描述，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。基于本申请中的实施例，本领域普通技术人员在没有作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。
本申请的说明书实施例和权利要求书及附图中的术语“第一”、“第二”等仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元。方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
应当理解，在本申请中，“至少一个(项)”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，用于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：只存在A，只存在B以及同时存在A和B三种情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，“a和b”，“a和c”，“b和c”，或“a和b和c”，其中a，b，c可以是单个，也可以是多个。
图1示例性的示出了一个通信系统的结构示意图，如图1所示，该通信系统包括一个网络设备和一个终端设备，可选地，该通信系统还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，本申请实施例不限于此。图1中黑色箭头表示网络设备与终端设备存在通信连接，例如通过空中接口。
应理解，该通信系统中位于网络侧的装置可以是任意一种具有无线收发功能的网络设备或可设置于该网络设备的芯片，该网络设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(Radio Network Controller，RNC)、节点B(Node B，NB)、基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station，BTS)、家庭基站(例如，Home evolved NodeB，或Home Node B，HNB)、基带单元(BaseBand Unit，BBU)，无线保真(Wireless Fidelity，WIFI)系统中的接入点(Access Point，AP)、无线中继节点、无线回传节点、传输点(Transmission Point，TP)或者发送接收点(Transmission and Reception Point，TRP)等，还可以为5G系统中的5G基站(next Generation Node B，gNB)，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，还可以为构成gNB或传输点的网络节点，例如，基带处理单元(Building Base band Unit，BBU)或者分布式单元(Distributed Unit，DU)等。进一步，还可以为未来通信系统，例如6G甚至7G系统的基站或者类似功能的网络设备等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括射频单元(Radio Unit，RU)。CU实现gNB的部分功能，DU实现gNB的部分功能，例如，CU实现无线资源控制(Radio Resource Control，RRC)，分组数据汇聚层协 议(Packet Data Convergence Protocol，PDCP)层的功能，DU实现无线链路控制(Radio Link Control，RLC)、媒体接入控制(Media Access Control，MAC)和物理(Physical，PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，例如RRC层信令或PDCP层信令，也可以认为是由DU发送的，或者，由DU+RU发送的。可以理解的是，网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外，CU可以划分为无线接入网中的网络设备，也可以将CU划分为核心网(Core Network，CN)中的网络设备，在此不做限制。
还应理解，该通信系统中的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。本申请实施例中的终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(Industrial Control)中的无线终端、无人驾驶(Self Driving)中的无线终端、远程医疗(Remote Medical)中的无线终端、智能电网(Smart Grid)中的无线终端、运输安全(Transportation Safety)中的无线终端、智慧城市(Smart City)中的无线终端、智慧家庭(Smart Home)中的无线终端等等。本申请的实施例对应用场景不做限定。本申请中位于终端侧的装置可以是前述终端设备及可设置于前述终端设备的芯片。
应理解，图1中仅为便于理解，示意性地示出了一个通信系统，但这不应对本申请构成任何限定，该通信系统中还可以包括更多数量的网络设备，也可以包括更多数量的终端设备，与不同的终端设备通信的网络设备可以是相同的网络设备，也可以是不同的网络设备，与不同的终端设备通信的网络设备的数量可以相同，也可以不同，本申请对此不做限定。
在通信系统中提供了一种C-DRX。网络设备根据业务需求，半静态的配置C-DRX的循环长度，例如：当业务对时延要求敏感时，配置较短的C-DRX循环，反之，可以配置较长的C-DRX循环。在每个C-DRX循环内，网络设备依据业务到达的情况，配置一个C-DRX激活持续时间(on duration time)，在C-DRX激活持续时间内终端设备处于激活态，监听下行控制信令，当有数据包到达时，例如物理下行共享信道(Physical Downlink Shared Channel，PDSCH)，终端设备及时进行接收和解调。而在超过C-DRX激活持续时间且再无数据包到达时，终端设备进入休眠状态，以实现在无数据包传输时终端设备的节能。此外，当网络设备确定C-DRX激活持续时间内无数据包传输时，例如只发送物理下行控制信道(Physical Downlink Control Channel，PDCCH)，网络设备也可以通过高层信令指示处于C-DRX激活持续时间内的终端设备进入休眠状态，进一步节省能耗。
在通信系统中提供了一种苏醒信号(Wake Up Signal，WUS)。通过WUS来指示终端设备是否在C-DRX激活持续时间内苏醒。当网络设备有下行数据下发时，通过WUS指示终端设备在C-DRX激活持续时间内苏醒，进行下行控制信息和/或下行数据的接收。当网络设备无下行数据发送时，通过WUS指示终端设备在C-DRX激活持续时间内休眠，节能省电。一般，技术上支持WUS的时域位置位于C-DRX激活持续时间之前。对于这种方案，当前关于能耗的讨论中，还提出在终端设备的准备时间(Preparation Time，即 WUS和C-DRX激活持续时间之间的时间)内引入信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)下发和信道状态信息(Channel State Information，CSI)上报，以使终端设备和网络设备能够进行灵活的链路自适应，提高数据传输的效率。但是，上述方案中，网络设备需要配置WUS资源以及CSI-RS资源，一方面增加了资源开销，另一方面，终端设备需要频繁苏醒分别进行WUS接收和CSI-RS接收，导致能耗增加。
图2为本申请通信方法实施例一的流程图，如图2所示，本实施例的方法可以包括：
步骤201、网络设备生成下行参考信号序列。
该下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活。
本领域技术人员可知，在窄带-万物互联网(NarrowBand Internet of Things，NB-IoT)技术中引入了分组的概念，不同的WUS对应不同的终端设备分组。示例性的，假设100个终端设备(编号为0-99)被分为4个组，例如，0-24号终端设备属于组0、25-49号终端设备属于组1、50-74号终端设备属于组2、75-99号终端设备属于组3。网络设备可以设置四个WUS，当要唤醒0号终端设备时，发送组0对应的WUS即可。组0内的0-24号终端设备都监测到该WUS，均被唤醒。而组1、2和3内的75个终端设备，由于只监测所属组对应的WUS，因此不会被唤醒。
在本申请的方案中，下行参考信号序列用于指示的可以为单个终端设备，也可以为一组终端设备。如果用于指示单个终端设备，则该下行参考信号序列用于指示相应的终端设备是否在激活持续时间内激活。如果指示一组终端设备，则该下行参考信号序列用于指示对应的该组终端设备是否在激活持续时间内激活。
在一种可能的实现方式中，所述下行参考信号序列用于指示终端设备是否在激活持续时间内激活。若网络设备要向某一个终端设备发送数据，此时网络设备可以通过与该终端设备对应的下行参考信号序列唤醒该终端设备。需要注意的是，这里的终端数量可以是一个或者多个。所述下行参考信号序列可以是用户特定的(UE specific)。不同终端设备之间的下行参考信号序列不同，或者不同终端设备之间的下行参考信号序列所携带的WUS不同，例如，不同终端设备对应不同的序列组，所述序列组包含被对应用户设备(User Equipment，UE)身份标识(Identity，ID)加扰的多个下行参考信号序列，保证不同终端设备对应的下行参考信号序列的低相关性。终端设备只能检测并正确解读出对应的序列组内的下行参考信号序列。终端设备可以依据协议规定，或者配置信息传输的信息，获知所需下行参考信号序列的接收时间。对应的网络设备的动作不再赘述。
在一种可能的实现方式中，所述下行参考信号序列用于指示一组终端设备是否在激活持续时间内激活。该组终端设备可以包含一个或多个终端设备。也可以理解为下行参考信号序列要唤醒的至少一个终端设备可以包含一个或多个终端设备，该至少一个终端设备属于同一个分组，不同的分组对应不同的WUS信号。即若网络设备要向一组终端设备发送数据，此时网络设备可以通过与该组终端设备对应的下行参考信号序列唤醒该组中的一个或多个终端设备。该实施方式的特点在于，所述下行参考信号序列是分组特定的(group/set specific)。不同分组之间的下行参考信号序列不同，或者不同分组之间的下行参考信号序列所携带的WUS不同。同一个分组内的一个或多个终端设备，收到同一个的下行参考信号序列。
在一种可能的实现方式中，网络设备可以将分组信息和其他配置信息一起发送给终端设备。分组信息可以包括组标识，不同的组标识对应不同的组。其他配置信息可以包括下行参考信号序列的扰码标识，预定义的第一时刻(即终端设备在哪里接收或监听下行参考信号序列)或者第一时段(即终端设备在某一起始时刻开始的一段时间内接收或监听下行参考信号序列)。示例性的，下行参考信号序列如果占用多个时域符号，则网络设备在时域上对下行参考信号序列进行加扰，每个组对应的扰码(例如，时域的正交掩码OCC、组的标识信息)不同。
在一种可能的实现方式中，同一个组内的终端设备，接收到下行参考信号序列，该下行参考信号序列是分组专用(group specific)的，同一组内的终端设备对应相同的下行参考信号序列或者相同的下行参考序列组。例如：UE 1和UE 2属于同一个组，该组对应的下行参考信号序列有4个，每个下行参考信号序列承载2bit的信息，用于指示该组内的UE 1和UE 2是否激活、是否上报CSI。另外，不同终端设备对下行参考信号序列承载的信息的解读也可以是不同的。例如，下行参考信号序列承载的4比特信息，UE 1从前2比特获知是否激活、是否触发CSI上报，UE 2从后2比特获知是否激活、是否触发CSI上报。同一个组内的每个终端设备需要解读的比特位可以由网络设备配置。
在一种可能的实现方式中，所述下行参考信号序列可以是信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)序列。所述CSI-RS序列用于信道状态信息的测量，例如可以用于：信道质量的测量、波束管理、时偏和频偏的跟踪和/或无线资源管理等。终端设备基于CSI-RS序列进行信道状态的测量得到CSI，并根据CSI-RS序列的指示确定是否上报CSI，若CSI-RS序列指示终端设备上报CSI，则终端设备上报测量得到的CSI，若CSI-RS序列指示终端设备不上报CSI，则终端设备只测量得到的CSI，并不需要上报CSI。当网络设备周期性的配置CSI-RS时，网络设备能指示终端设备进行周期性的或者半持续的或者非周期的CSI上报；当网络设备半持续的配置CSI-RS时，网络设备能够指示终端半持续的或者非周期的CSI上报；当网络设备非周期的配置时，网络设备指示终端设备非周期的CSI上报。周期CSI上报时，在PUCCH上报宽带的CSI信息；半持续CSI上报时，可选的，进行宽带或者子带的CSI上报(更精细的子载波级的CSI上报)，依据CSI信息的负荷，CSI可在PUSCH或者PUCCH传输；非周期CSI上报时，可选的，进行宽带或者子带的CSI上报，CSI信息通过PUSCH传输。
在一种可能的实现方式中，下行参考信号序列承载的信息包含第一字段，第一字段用于指示至少一个终端设备是否在激活持续时间内激活。
当网络设备有数据包要发送给终端设备时，就需要指示终端设备在激活持续时间内激活，因此网络设备可以将第一字段设置为第一值，例如1；当网络设备没有数据包要发送给终端设备时，需要指示终端设备在激活持续时间内不激活，因此网络设备可以将第一字段设置为第二值，例如0；第一值和第二值不同且分别为0和1的其中之一。
在一种可能的实现方式中，下行参考信号序列还可以用于指示是否触发至少一个终端设备上报CSI。具体的，该下行参考信号序列承载的信息包含第二字段，第二字段用于指示是否触发至少一个终端设备上报CSI。
当网络设备需要指示终端设备上报CSI时，可以将第二字段设置为第一值，例如1；当网络设备需要指示终端设备不上报CSI时，可以将第二字段设置为第二值，例如0；第 一值和第二值不同且分别为0和1的其中之一。
在一种可能的实现方式中，下行参考信号序列承载的信息包含第三字段，第三字段用于指示至少一个终端设备是否进行带宽部分BWP切换。BWP切换可以参照现有技术的定义。具体来说，网络设备基于获知的多个BWP信道的状况，通过下行参考信号中的第三字段，指示终端设备切换BWP。例如，指示终端设备切换到信道质量优于当前BWP的另一BWP上，保证较好的信道传输能力。可选的，所述第三字段包含一个或者多个比特，所述一个或多个比特用于指示切换的目标BWP。例如，第三字段包括2bit，这样网络设备可以指示终端设备在候选的不超过4个BWP中进行切换。
示例性的，网络设备生成的下行参考信号序列包括16符号，可以承载4比特的信息，因此可用的下行参考信号序列一共有16个，分别对应一个4比特的二进制串。在该示例中，网络设备可以采用以下方法设置上述4比特的二进制串中的各个比特位：
第1比特，用于指示终端设备是否在激活持续时间(on duration time)内激活。第1比特的取值可以是0或者1；
第2比特，用于指示是否触发至少一个终端设备上报信道状态信息(Channel State Information，CSI)。可选地，本申请实施例中的CSI包括但不限于下列信息中的至少一项：预编码矩阵指示(Precoding Matrix Indicator，PMI)、秩指示(Rank Indication，RI)和信道质量指示(Channel Quality Indicator，CQI)、CSI-RS资源指示(CSI-RS Resource Indicator，CRI)和层指示(Layer Indication，LI)中的至少一项，本申请实施例对此不作限定。第2比特的取值可以是0或者1；
第3-4比特，用于指示至少一个终端设备是否进行带宽部分(Bandwidth Partial，BWP)切换。本申请中可以设置每个下行参考信号序列关联最多4个BWP，因此可以通过第3-4比特指示终端设备在下一个激活持续时间内监听的BWP标识。第3-4比特的取值可以是00、01、10或者11。
上述第1比特、第2比特、第3比特、第4比特只是表征不同的比特，其先后顺序可以调换。举例而言，下行参考信号序列承载的4比特的信息为“1101”，其中第1比特“1”指示终端设备在激活持续时间激活；第2比特“1”指示触发上报CSI；第3和4比特“01”指示监听第2个BWP。
需要说明的是，上述示例中下行参考信号序列的长度为16，可以承载4比特的信息，但本申请对于下行参考信号序列的长度不做具体限定，因此网络设备可以生成其他长度的下行参考信号序列，以承载其他数量比特的信息，还可以给前述信息的各个比特赋予更多或更少的作用。例如，下行参考信号序列的长度为64，可以承载6比特的信息，除上述4比特外，可以用第5比特指示天线数目切换(关闭部分天线射频通道，节省功耗)，用第6比特指示辅载波切换等。另外，除了上述示例中用一个比特指示相关功能，还可以采用多个比特共同指示相关功能，这样可以通过多个比特的取值组合呈现相应功能的多种情况。
需要注意的是，上文中的第一字段、第二字段、第三字段的关系并不限定。例如所述下行参考信号序列可以包括上述字段中的一个，如第一字段；也可以包括他们中的两个，如第一和第三字段；也可以包括所述三个字段或者多个。或者第一字段和第三字段可以是同一个字段，并且进行相应的指示。
步骤202、网络设备向至少一个终端设备发送下行参考信号序列，该至少一个终端设备包括第一终端设备。
在一种可能的实现方式中，网络设备可以向某一个终端设备发送下行参考信号序列，该下行参考信号序列用于唤醒该终端设备。即若网络设备要向某一个终端设备发送数据，此时网络设备可以发送与该终端设备对应的下行参考信号序列唤醒该终端设备。需要注意的是，这里的终端数量可以是一个或者多个。所述下行参考信号序列是用户特定的(UE specific)，不同UE之间的下行参考信号序列不同，或者不同UE之间的下行参考信号序列所携带的WUS不同。终端设备可以依据协议规定，或者配置信息传输的信息，获知所需下行参考信号序列的接收时间，并在该接收时间检测下行参考信号序列。
在一种可能的实现方式中，网络设备可以向属于同一分组的一个或多个终端设备发送下行参考信号序列，以唤醒该一个或多个终端设备。即若网络设备要向一组终端设备发送数据，此时网络设备可以发送与该组终端设备对应的下行参考信号序列唤醒该组中的一个或多个终端设备。所述下行参考信号序列是分组特定的(group/set specific)。不同分组之间的下行参考信号序列不同，或者不同分组之间的下行参考信号序列所携带的WUS不同。同一个分组内的一个或多个终端设备，收到同一个的下行参考信号序列。
在一种可能的实现方式中，第一终端设备在第一时刻接收下行参考信号序列，该第一时刻可以是在激活持续时间之前的某一时刻，也可以是在激活持续时间之内的某一时刻。所述第一时刻可以预先定义或者预先配置的，例如可以通过高层信令配置。
图3示例性的示出了一种下行参考信号序列的发送时序的示意图，如图3所示，网络设备可以在激活持续时间之前发送下行参考信号序列(CSI-RS序列)，第一终端设备在激活持续时间之前的第一时刻(或者从第一时刻开始的一段短时间内)激活并接收下行参考信号序列。图4示例性的示出了另一种下行参考信号序列的发送时序的示意图，如图4所示，网络设备可以在激活持续时间内发送下行参考信号序列(CSI-RS序列)，第一终端设备在激活持续时间内的第一时刻(或者从第一时刻开始的一段短时间内)激活并接收下行参考信号序列。图3和图4的区别在于：
图3中第一终端设备在第一时刻激活，第一时刻在激活持续时间之前，即第一终端设备会在激活持续时间之前的第一时刻由非工作态(例如，待机)转为工作态，接收下行参考信号序列。进一步，在接收下行参考信号序列之后的其余时刻(第一时刻之后，激活持续时间之前)进入非工作态。进一步，若下行参考信号序列指示在激活持续时间激活，则第一终端设备进入激活持续时间后由非工作态转为工作态，并在PDCCH候选时机(PDCCH candidate occasion)监听物理下行控制信道(例如PDCCH)。若下行参考信号序列指示在激活持续时间不激活，则第一终端设备在第一时刻之后保持非工作态。该方法中，终端设备在激活持续时间之前的某一时刻由非工作态转为工作态以接收下行参考信号序列，该下行参考信号序列可以实现WUS的功能，即在有下行数据发送、需要终端设备监听接收时才唤醒终端设备，降低终端设备的功耗，提高通信的效率，该下行参考信号序列还可以指示终端设备不激活，使终端设备在接收下行参考信号序列之后的其余时刻进入非工作状态，进一步降低终端设备的功耗。
图4中第一终端设备在第一时刻激活，第一时刻在激活持续时间内，即第一终端设备会在激活持续时间内的第一时刻处于工作态接收下行参考信号序列。进一步的，若下行参 考信号序列指示在激活持续时间激活，则第一终端设备在接收下行参考信号序列之后的其余时刻(第一时刻之后，激活持续时间结束之前)保持工作态，并在PDCCH候选时机(PDCCH candidate occasion)监听物理下行控制信道(例如PDCCH)。若下行参考信号序列指示在激活持续时间不激活，则第一终端设备在第一时刻之后进入非工作态。该方法中，终端设备在进入激活持续时间由非工作态转为工作态，而在激活持续时间内的某一时刻接收下行参考信号序列，该下行参考信号序列可以实现WUS的功能，指示终端设备激活或不激活，指示激活时终端设备无需再次由非工作态转为工作态，在激活持续时间内保持工作态即可，降低终端设备的功耗，提高通信的效率，指示不激活时终端设备在接收下行参考信号序列之后的其余时刻进入非工作状态，降低终端设备的功耗。
上述第一时刻可以是网络设备配置的，具体的，所述第一时刻可以通过高层信令配置，高层信令可以为无线资源控制(Radio Resource Control，RRC)信令。
需要说明的是，本实施例提供了一种显式的实现方式，即通过上述第一字段来指示终端设备是否在激活持续时间内激活。
步骤203、终端设备确定是否在激活持续时间内激活。
若所述下行参考信号序列是用户特定的(UE specific)，则终端设备在接收到网络设备配置给自己的下行参考信号序列时，解析该下行参考信号序列。
若所述下行参考信号序列是分组特定的(group/set specific)，则终端设备在接收到网络设备配置给所属组的下行参考信号序列时，根据网络设备配置的扰码对所属组的下行参考信号序列进行解扰，可以识别出自己需要的下行参考信号序列，解析该下行参考信号序列。扰码可以是终端的标识信息，例如用户设备UE ID，终端设备获取对应的下行参考信号序列，可以参考步骤201中的陈述，不在赘述。
在一种可能的实现方式中，第一终端设备在第一时刻(该第一时刻位于激活持续时间之前)接收到下行参考信号序列后，获取下行参考信号序列承载的至少一个比特的信息，然后根据该信息中的各个比特的值执行相应的操作：若第1比特为1，第一终端设备在激活持续时间内由非工作态转为工作态，并在PDCCH候选时机(PDCCH candidate occasion)监听物理下行控制信道(例如PDCCH)。PDCCH候选时机可以由网络设备配置；第2比特为1，第一终端设备根据下行参考信号序列进行信道测量并在指定的时刻上报CSI，或者，第2比特为0，第一终端设备可以根据下行参考信号序列进行信道测量，但无需上报CSI。若第1比特为0，第一终端设备在接收下行参考信号序列之后进入非工作态；第2比特为1，第一终端设备根据下行参考信号序列进行信道测量并在指定的时刻上报CSI，或者，第2比特为0，第一终端设备可以根据下行参考信号序列进行信道测量，但无需上报CSI。
在一种可能的实现方式中，第一终端设备在第一时刻(该第一时刻位于激活持续时间内)接收到下行参考信号序列后，获取下行参考信号序列承载的至少一个比特的信息，然后根据该信息中的各个比特的值执行相应的操作：若第1比特为1，第一终端设备在接收下行参考信号序列之后进入非工作态；若第1比特为0，第一终端设备在接收下行参考信号序列之后的其余时刻(第一时刻之后，激活持续时间结束之前)在PDCCH候选时机(PDCCH candidate occasion)监听物理下行控制信道(例如PDCCH)；第2比特为1，第一终端设备根据下行参考信号序列进行信道测量并在指定的时刻上报CSI，或者，第2 比特为0，第一终端设备可以根据下行参考信号序列进行信道测量，但无需上报CSI。
需要说明的是，上述示例中比特位的0和1的取值只是一种举例说明，比特位的取值还可以采用其他设置，本申请对此不做具体限定。
本实施例网络设备通过CSI-RS序列指示WUS信息，使下行参考信号序列既可以实现WUS的功能。在有下行数据发送、需要终端设备监听接收时才唤醒终端设备。因为不需要分别发送下行参考信号序列以及额外的苏醒信号，所以，发送侧，如网络设备，以及接收侧，如终端设备，节省了功率。进一步，简化了处理流程，提高了通信的效率。
图5为本申请通信方法实施例二的流程图，如图5所示，本实施例的方法可以包括：
步骤501、网络设备生成下行参考信号序列。
步骤501的技术原理和上述步骤201类似，二者的区别在于，本实施例中网络设备在确定有数据包要发送给终端设备时，才会生成下行参考信号序列，即网络设备通过是否发送下行参考信号序列来指示至少一个终端设备是否激活。因此本实施例中的方案可以不包含如上述实施例中的第一字段。
步骤502、网络设备向至少一个终端设备发送下行参考信号序列，该至少一个终端设备包括第一终端设备。
步骤502的技术原理和上述步骤202类似，二者的区别在于，本实施例提供了一种隐式的实现方式，即网络设备只有在有数据包要发送给终端设备，才会向终端设备发送下行参考信号序列，而没有数据包要发送给终端设备时，网络设备不会发送下行参考信号序列。换言之，终端设备收到下行参考信号序列，表明网络设备有数据包要发送给所述终端设备。
步骤503、终端设备根据是否监听到下行参考信号序列，确定是否在激活持续时间内激活。
步骤503的技术原理和上述步骤203类似，二者的区别在于，本实施例中，终端设备根据是否监听(即尝试盲检)到下行参考信号序列确定是否需要激活。
在一种可能的实现方式中，第一终端设备在第一时刻(该第一时刻位于激活持续时间之前)激活并监听下行参考信号序列，如果监听到下行参考信号序列，第一终端设备在激活持续时间内由非工作态转为工作态，即在PDCCH候选时机(PDCCH candidate occasion)监听物理下行控制信道(例如PDCCH)；如果没有监听到下行参考信号序列，第一终端设备在接收下行参考信号序列之后进入非工作态，并在激活持续时间内保持非工作态，即不监听物理下行信道(例如PDCCH)。
在一种可能的实现方式中，第一终端设备在第一时刻(该第一时刻位于激活持续时间内)激活并监听下行参考信号序列，如果监听到下行参考信号序列，第一终端设备在接收下行参考信号序列之后的其余时刻(第一时刻之后，激活持续时间结束之前)会在PDCCH候选时机(PDCCH candidate occasion)监听物理下行控制信道(例如PDCCH)；如果没有监听到下行参考信号序列，第一终端设备在接收下行参考信号序列之后进入非工作态。
上述第一时刻可以是网络设备配置的，具体的，所述第一时刻可以通过高层信令配置，高层信令可以为RRC信令。
在一种可能的实现方式中，第一终端设备根据监听到下行参考信号序列，确定在激活持续时间内激活。这种情况中，下行参考信号序列与对应的激活持续时间的关系，可以是网络通过配置信息发送的，或者是双方约定的。
在一种可能的实现方式中，第一终端设备根据没有监听到下行参考信号序列，确定在激活持续时间内激活。
在一种可能的实现方式中，如果网络设备没有数据包要发送给终端设备，则网络设备仍然可以向第一终端设备发送下行参考信号序列，第一终端设备监听到下行参考信号序列就会在收到下行参考信号序列时进入休眠状态，但是第一终端设备会根据下行参考信号序列进行信道测量和CSI上报，以防止第一终端设备休眠时间较长时，在休眠期间信道发生变化不能及时上报给网络设备的问题。
本实施例下行参考序列可以为CSI-RS序列，网络设备通过CSI-RS序列指示WUS信息，使下行参考信号序列既可以实现WUS的功能，在有下行数据发送、需要终端设备监听接收时才唤醒终端设备，降低终端设备的功耗，又可以实现CSI-RS的功能，用于信道状态的测量并触发终端设备上报CSI，因此，能够提高了通信的效率。
图6为本申请网络侧的装置实施例的结构示意图，如图6所示，该装置可以是上述网络设备或可设置于该网络设备内的芯片或者集成电路。本实施例的装置可以包括：处理模块601和发送模块602，其中，处理模块601，用于生成下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活；发送模块602，用于向所述至少一个终端设备发送所述下行参考信号序列。
在一种可能的实现方式中，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
在一种可能的实现方式中，所述下行参考信号序列还用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活持续时间内激活。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换。
在一种可能的实现方式中，所述发送模块602，具体用于在所述激活持续时间之前或者在所述激活持续时间内向所述至少一个终端设备发送所述下行参考信号序列。
本实施例的装置，可以用于执行图2-5任一所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图7为本申请终端侧的装置实施例的结构示意图，如图7所示，该装置可以是上述终端设备或可设置于该终端设备内的芯片或者集成电路。本实施例的装置可以包括：接收模块701和处理模块702，其中，接收模块701，用于接收下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活，所述至少一个终端设备包括第一终端设备；处理模块702，用于确定所述第一终端设备是否在所述激活持续时间内激活。
在一种可能的实现方式中，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
在一种可能的实现方式中，所述下行参考信号序列还用于指示是否触发所述至少一个 终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活持续时间内激活。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换，
在一种可能的实现方式中，所述接收模块701，具体用于在所述激活持续时间之前或者在所述激活持续时间内接收所述下行参考信号序列。
在一种可能的实现方式中，所述处理模块702，还用于当在所述激活持续时间之前接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内激活，则监听物理下行信道；或者，当在所述激活持续时间内接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内不激活，则在所述激活持续时间内进入休眠状态。
在一种可能的实现方式中，接收模块701，还用于监听下行参考信号序列，所述下行参考信号序列对应至少一个终端设备，所述至少一个终端设备包括第一终端设备；处理模块702，用于根据是否监听到所述下行参考信号序列，确定所述第一终端设备是否在激活持续时间内激活。
在一种可能的实现方式中，所述激活持续时间是通过网络设备配置的。
在一种可能的实现方式中，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
在一种可能的实现方式中，所述下行参考信号序列用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
在一种可能的实现方式中，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换，
在一种可能的实现方式中，所述接收模块701，具体用于在所述激活持续时间之前或者在所述激活持续时间内监听所述下行参考信号序列。
在一种可能的实现方式中，所述处理模块702，具体用于当在所述激活持续时间之前监听到所述下行参考信号序列时，监听物理下行信道；或者，当在所述激活持续时间内监听到所述下行参考信号序列时，在所述激活持续时间内进入休眠状态。
本实施例的装置，可以用于执行图2-5任一所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图8为本申请提供的终端侧的装置的一个示意性结构图。如图8所示，装置800包括处理器801和收发器802。该装置可以为终端设备或者终端设备内的芯片或者集成电路。
可选地，装置800还包括存储器803。其中，处理器801、收发器802和存储器803之间可以通过内部连接通路互相通信，传递控制信号和/或数据信号。
其中，存储器803用于存储计算机程序。处理器801用于执行存储器803中存储的计 算机程序，从而实现图7所示装置实施例中处理模块702的功能。而收发器802用于实现图7所示装置实施例中接收模块701的功能。
可选地，存储器803也可以集成在处理器801中，或者独立于处理器801。
可选地，本实施例中的装置800为终端设备时，还可以包括天线804，用于将收发器802输出的信号发射出去。或者，收发器802通过天线接收信号。
可选地，本实施例中的装置800为终端设备时，还可以包括电源805，用于给装置中的各种器件或电路提供电源。
除此之外，为了使得装置的功能更加完善，进一步可选的，装置800还可以包括输入单元806、显式单元807(也可以认为是输出单元)、音频电路808、摄像头809和传感器810等中的一个或多个。音频电路还可以包括扬声器8081、麦克风8082等，不再赘述。
图9为本申请提供的网络侧的装置的一个示意性结构图。如图9所示，装置900包括天线901、射频装置902、基带装置903。天线901与射频装置902连接。在上行方向上，射频装置902通过天线901接收来自终端设备的信号，并将接收到的信号发送给基带装置903进行处理。在下行方向上，基带装置903生成需要发送给终端设备的信号，并将生成的信号发送给射频装置902。射频装置902通过天线901将该信号发射出去。
基带装置903可以包括一个或多个处理单元9031。处理单元9031具体可以为处理器。
此外，基带装置903还可以包括一个或多个存储单元9032以及一个或多个通信接口9033。存储单元9032用于存储计算机程序和/或数据。通信接口9033用于与射频装置902交互信息。存储单元9032具体可以为存储器，通信接口9033可以为输入输出接口或者收发电路。
可选地，存储单元9032可以是和处理单元9031处于同一芯片上的存储单元，即片内存储单元，也可以是与处理单元9031处于不同芯片上的存储单元，即片外存储单元。本申请对此不作限定。
基带装置903可以用于实现图6所示装置实施例中处理模块601的功能。射频装置902可以用于实现图6所示装置实施例中发送模块602的功能。
当需要发送数据时，处理单元9031对待发送的数据进行基带处理后，输出基带信号至射频装置902，射频装置902将基带信号进行射频处理后将射频信号通过天线901以电磁波的形式向外发送。当有数据到达时，射频装置902通过天线901接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理单元9031，处理单元9031将基带信号转换为数据并对该数据进行处理。为便于说明，图中仅示出了一个存储单元和处理单元。在实际的设备产品中，可以存在一个或多个处理单元和一个或多个存储单元。存储单元也可以称为存储介质或者存储设备等。存储单元可以是独立于处理单元设置，也可以是与处理单元集成在一起，本申请实施例对此不做限制。
本实施例中的装置为网络设备时，该网络设备可以如图10所示，网络设备1000包括一个或多个射频单元，如远端射频单元(remote radio unit，RRU)1010和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)1020。所述RRU 1010可以称为收发模块，可选地，该收发模块还可以称为收发机、收发电路、或者收发器等等，其可以包括至少一个天线1011和射频单元1012。所述RRU 1010部分主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送指示信息。所述BBU 1020部分主要用于进行基带处理，对基站进行控制等。所述RRU 1010与BBU 1020可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU 1020为基站的控制中心，也可以称为处理模块，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU(处理模块)可以用于控制基站执行上述方法实施例中关于网络设备的操作流程，例如，生成上述指示信息等。
在一个示例中，所述BBU 1020可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述BBU 1020还包括存储器1021和处理器1022。所述存储器1021用以存储必要的指令和数据。所述处理器1022用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。所述存储器1021和处理器1022可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
本实施例中的装置为终端设备时，该终端设备可以如图11所示，终端设备包括收发单元1110和处理单元1120。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将收发单元1110中用于实现接收功能的器件视为接收单元，将收发单元1110中用于实现发送功能的器件视为发送单元，即收发单元1110包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
应理解，收发单元1110用于执行上述方法实施例中终端设备侧的发送操作和接收操作，处理单元1120用于执行上述方法实施例中终端设备上除了收发操作之外的其他操作。
例如，在一种实现方式中，收发单元1110用于执行步骤202/502中终端设备侧的发送操作，和/或收发单元1110还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元1120，用于执行步骤203/503，和/或处理单元1120还用于执行本申请实施例中终端设备侧的其他处理步骤。
本实施例中的装置为芯片类的装置或者电路时，该芯片装置可以包括收发单元和处理单元。其中，所述收发单元可以是输入输出电路、和/或通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。当装置为网络侧的装置时，所述装置所包含的上述单元的功能可以参照图6中相应模块的阐述。当装置为终端侧的装置时，所述装置包含的上述单元的功能可以参照图7中相应模块的阐述。
本实施例中的装置为终端设备时，该终端设备还可以如图12所示。终端设备包括处理器1210，发送数据处理器1220，接收数据处理器1230。上述实施例中的处理模块可以是图12中的该处理器1210，并完成相应的功能。上述实施例中的发送模块/接收模块可以是图12中的发送数据处理器1220，和/或接收数据处理器1230。虽然图12中示出了信道编码器、信道解码器，但是可以理解这些模块并不对本实施例构成限制性说明，仅是示意性的。
本实施例中的装置为终端设备时，该终端设备还可以如图13所示。处理装置1300中包括调制子系统、中央处理子系统、周边子系统等模块。本实施例中的装置可以作为其中 的调制子系统。具体的，该调制子系统可以包括处理器1303，接口1304。其中处理器1303完成上述处理模块的功能，接口1304完成上述发送模块/接收模块的功能。作为另一种变形，该调制子系统包括存储器1306、处理器1303及存储在存储器1306上并可在处理器上运行的程序，该处理器1303执行该程序时实现上述方法实施例中终端设备侧的方法。需要注意的是，所述存储器1306可以是非易失性的，也可以是易失性的，其位置可以位于调制子系统内部，也可以位于处理装置1300中，只要该存储器1306可以连接到所述处理器1303即可。
作为本实施例的另一种形式，提供一种计算机可读存储介质，其上存储有指令，该指令被执行时执行上述方法实施例中终端设备侧或网络设备侧的方法。
作为本实施例的另一种形式，提供一种包含指令的计算机程序产品，该指令被执行时执行上述方法实施例中终端设备侧或网络设备侧的方法。
以上各实施例中提及的处理器可以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。处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、特定应用集成电路(application-specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array,FPGA)或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。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。本申请实施例公开的方法的步骤可以直接体现为硬件编码处理器执行完成，或者用编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。
上述各实施例中提及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。
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(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：
    生成下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活；
    向所述至少一个终端设备发送所述下行参考信号序列。
  2. 根据权利要求1所述的方法，其特征在于，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
  3. 根据权利要求1或2所述的方法，其特征在于，所述下行参考信号序列还用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活持续时间内激活。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
  6. 根据权利要求1-5中任一项所述的方法，其特征在于，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述向所述至少一个终端设备发送所述下行参考信号序列，包括：
    在所述激活持续时间之前或者在所述激活持续时间内向所述至少一个终端设备发送所述下行参考信号序列。
  8. 一种通信方法，其特征在于，包括：
    接收下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活，所述至少一个终端设备包括第一终端设备；
    确定所述第一终端设备是否在所述激活持续时间内激活。
  9. 根据权利要求8所述的方法，其特征在于，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
  10. 根据权利要求8或9所述的方法，其特征在于，所述下行参考信号序列还用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
  11. 根据权利要求8-10中任一项所述的方法，其特征在于，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活持续时间内激活。
  12. 根据权利要求8-11中任一项所述的方法，其特征在于，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
  13. 根据权利要求8-12中任一项所述的方法，其特征在于，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部 分BWP切换，
  14. 根据权利要求8-13中任一项所述的方法，其特征在于，所述接收下行参考信号序列，包括：
    在所述激活持续时间之前或者在所述激活持续时间内接收所述下行参考信号序列。
  15. 根据权利要求14所述的方法，其特征在于，还包括：
    当在所述激活持续时间之前接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内激活，则监听物理下行信道；或者，
    当在所述激活持续时间内接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内不激活，则进入休眠状态。
  16. 一种装置，其特征在于，包括：
    处理模块，用于生成下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活；
    发送模块，用于向所述至少一个终端设备发送所述下行参考信号序列。
  17. 根据权利要求16所述的装置，其特征在于，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
  18. 根据权利要求16或17所述的装置，其特征在于，所述下行参考信号序列还用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
  19. 根据权利要求16-18中任一项所述的装置，其特征在于，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活持续时间内激活。
  20. 根据权利要求16-19中任一项所述的装置，其特征在于，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
  21. 根据权利要求16-20中任一项所述的装置，其特征在于，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换。
  22. 根据权利要求16-21中任一项所述的装置，其特征在于，所述发送模块，具体用于在所述激活持续时间之前或者在所述激活持续时间内向所述至少一个终端设备发送所述下行参考信号序列。
  23. 一种装置，其特征在于，包括：
    接收模块，用于接收下行参考信号序列，所述下行参考信号序列用于指示至少一个终端设备是否在激活持续时间内激活，所述至少一个终端设备包括第一终端设备；
    处理模块，用于确定所述第一终端设备是否在所述激活持续时间内激活。
  24. 根据权利要求23所述的装置，其特征在于，所述下行参考信号序列为信道状态信息参考信号CSI-RS序列。
  25. 根据权利要求23或24所述的装置，其特征在于，所述下行参考信号序列还用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
  26. 根据权利要求23-25中任一项所述的装置，其特征在于，所述下行参考信号序列承载的信息包含第一字段，所述第一字段用于指示所述至少一个终端设备是否在所述激活 持续时间内激活。
  27. 根据权利要求23-25中任一项所述的装置，其特征在于，所述下行参考信号序列承载的信息包含第二字段，所述第二字段用于指示是否触发所述至少一个终端设备上报信道状态信息CSI。
  28. 根据权利要求23-27中任一项所述的装置，其特征在于，所述下行参考信号序列承载的信息包含第三字段，所述第三字段用于指示所述至少一个终端设备是否进行带宽部分BWP切换，
  29. 根据权利要求23-28中任一项所述的装置，其特征在于，所述接收模块，具体用于在所述激活持续时间之前或者在所述激活持续时间内接收所述下行参考信号序列。
  30. 根据权利要求29所述的装置，其特征在于，所述处理模块，还用于当在所述激活持续时间之前接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内激活，则监听物理下行信道；或者，当在所述激活持续时间内接收所述下行参考信号序列时，若所述下行参考信号序列指示所述至少一个终端设备在所述激活持续时间内不激活，则进入休眠状态。
  31. 一种装置，其特征在于，包括：
    一个或多个处理器；
    存储器，用于存储一个或多个程序；
    当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如权利要求1-7中任一项所述的方法。
  32. 一种装置，其特征在于，包括：
    一个或多个处理器；
    存储器，用于存储一个或多个程序；
    当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如权利要求8-15中任一项所述的方法。
  33. 一种计算机可读存储介质，其特征在于，包括计算机程序，所述计算机程序在计算机上被执行时，使得所述计算机执行权利要求1-15中任一项所述的方法。
  34. 一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行权利要求1-15中任一项所述的方法。
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