WO2021163896A1 - 通信方法及装置 - Google Patents

通信方法及装置 Download PDF

Info

Publication number
WO2021163896A1
WO2021163896A1 PCT/CN2020/075764 CN2020075764W WO2021163896A1 WO 2021163896 A1 WO2021163896 A1 WO 2021163896A1 CN 2020075764 W CN2020075764 W CN 2020075764W WO 2021163896 A1 WO2021163896 A1 WO 2021163896A1
Authority
WO
WIPO (PCT)
Prior art keywords
indication information
csi
bit
ssb
dci
Prior art date
Application number
PCT/CN2020/075764
Other languages
English (en)
French (fr)
Inventor
王�锋
薛丽霞
张旭
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/CN2020/075764 priority Critical patent/WO2021163896A1/zh
Priority to PCT/CN2020/087320 priority patent/WO2021164127A1/zh
Priority to CN202080095700.7A priority patent/CN115066861A/zh
Publication of WO2021163896A1 publication Critical patent/WO2021163896A1/zh
Priority to US17/890,528 priority patent/US20220394526A1/en

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/22Arrangements affording multiple use of the transmission path using time-division multiplexing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005Transmission of information for alerting of incoming communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/28Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and device.
  • time-frequency tracking and radio resource measurement are required.
  • the terminal device can achieve the purpose of time-frequency tracking and wireless resource measurement by measuring synchronization signal block (synchronization signal block, SSB).
  • synchronization signal block synchronization signal block, SSB
  • the problem of high power consumption may occur in the terminal equipment in the process of measuring the SSB.
  • This application provides a communication method and device for reducing power consumption of terminal equipment.
  • this application provides a communication method.
  • the method includes: on a physical downlink control channel (PDCCH) monitoring opportunity belonging to the same paging ocassion (PO), a network device sends at least one Downlink control information (DCI), all or part of at least one DCI includes first indication information, and each first indication information is used to indicate at least one channel state information reference signal (channel state information reference signal, CSI- RS) is available, at least one CSI-RS corresponds to at least one SSB, and at least one SSB corresponds to the PDCCH monitoring opportunity used to send the DCI where the first indication information is located; the network device sends the CSI-RS indicated as available by the first indication information .
  • PDCCH physical downlink control channel
  • PO paging ocassion
  • the network device indicates that the CSI-RS corresponding to the SSB is available through the DCI sent on the PDCCH monitoring opportunity corresponding to the SSB, and the terminal device determines the available CSI-RS according to the DCI.
  • the terminal device receives the available CSI-RS, so that the terminal device can further measure the CSI-RS, so as to achieve the purpose of time-frequency tracking and wireless resource measurement. Since the power consumption generated when the terminal device performs the CSI-RS measurement is less than the power consumption generated when the terminal device performs the SSB measurement, the communication method provided in this application can reduce the power consumption of the terminal device.
  • the network device before sending at least one DCI, configures N CSI-RSs for the terminal device through a system information block (SIB) or high-level signaling, and the N CSI-RSs include the first An indication information indicates available CSI-RS. In this way, the network device can configure the N CSI-RS for the terminal device in the idle state or in the inactive state.
  • SIB system information block
  • the network device can configure the N CSI-RS for the terminal device in the idle state or in the inactive state.
  • the network device configures the terminal device with the correspondence between N CSI-RSs and M SSBs through SIB or high-level signaling, and the M SSBs are the SSBs actually sent by the network device. In this way, the network device can configure the corresponding relationship between the N CSI-RS and the M SSBs for the terminal device in the idle state or in the inactive state.
  • the correspondence between N CSI-RSs and M SSBs is related to the order of N CSI-RSs in the SIB or higher layer signaling used to configure N CSI-RSs; or, The correspondence between the N CSI-RSs and the M SSBs is related to the identification of the N CSI-RSs.
  • the network device can determine the correspondence between the N CSI-RSs and the M SSBs according to the sequence in the SIB or high-level signaling of the N CSI-RSs, or the identification of the N CSI-RSs.
  • At least one CSI-RS has a spatial position relationship with at least one SSB.
  • the network device indicates that the CSI-RS that has a spatial position relationship with the SSB is available, so that the terminal device can receive and measure the CSI-RS that has a spatial position relationship with the SSB, ensuring that the measurement of the CSI-RS and the SSB achieve the same measurement purpose.
  • At least one CSI-RS and at least one SSB have a Quasi-collocation (QCL)-Type D relationship; or, the beam directions of at least one CSI-RS and at least one SSB are the same or similar .
  • QCL Quasi-collocation
  • terminal devices that receive DCI on PDCCH monitoring opportunities belonging to the same PO are divided into L terminal groups, where L is a positive integer; the first bit in each DCI is used to indicate whether there is The first indication information, the second bit is used to indicate whether there is second indication information, and the second indication information is used to indicate the terminal group that receives the physical downlink shared channel (PDSCH) scheduled by the DCI; The bit indicates the presence of the first indication information, and the second bit indicates the presence of the second indication information, the first indication information occupies the third and fourth bits, and the second indication information occupies the fifth and sixth bits.
  • L is a positive integer
  • the first bit in each DCI is used to indicate whether there is The first indication information
  • the second bit is used to indicate whether there is second indication information
  • the second indication information is used to indicate the terminal group that receives the physical downlink shared channel (PDSCH) scheduled by the DCI
  • the bit indicates the presence of the first indication information
  • the second bit indicates the presence of the second indication information
  • the first indication information occupies the third
  • the network device can improve the utilization of the bits in the DCI.
  • the present application provides a communication method.
  • the method includes: on a PDCCH monitoring opportunity of a PO, a terminal device receives DCI, the DCI includes first indication information, and the first indication information is used to indicate that at least one CSI-RS is available, At least one CSI-RS corresponds to at least one SSB, and at least one SSB corresponds to a PDCCH monitoring opportunity; the terminal device receives the CSI-RS indicated as available by the first indication information.
  • the terminal device in the idle state or in the inactive state can determine the available CSI-RS through the DCI sent by the network device.
  • the terminal device receives the available CSI-RS indicated by the CSI-RS.
  • the terminal device can further measure the CSI-RS to achieve the purpose of time-frequency tracking and radio resource measurement. Since the power consumption generated when the terminal device performs the CSI-RS measurement is less than the power consumption generated when the terminal device performs the SSB measurement, the communication method provided in this application can reduce the power consumption of the terminal device.
  • the terminal device before receiving the DCI, the terminal device receives the SIB or high-level signaling used by the network device to configure N CSI-RSs, and the N CSI-RSs include the CSI-RS indicated as available by the first indication information. RS. In this way, when a terminal device is in an idle state or an inactive state, it can determine the information of N CSI-RS through SIB or high-level signaling.
  • the terminal device receives SIB or high-level signaling used by the network device to configure the correspondence between N CSI-RSs and M SSBs, and the M SSBs are SSBs actually sent by the network device. In this way, when the terminal device is in an idle state or an inactive state, it can determine the correspondence between N CSI-RSs and M SSBs through SIB or high-level signaling.
  • the correspondence between N CSI-RSs and M SSBs is related to the order of N CSI-RSs in the SIB or higher layer signaling used to configure N CSI-RSs; or, The correspondence between the N CSI-RSs and the M SSBs is related to the identities of the N CSI-RSs.
  • At least one CSI-RS has a spatial position relationship with at least one SSB.
  • the terminal device receives and measures the CSI-RS that has a spatial position relationship with the SSB, ensuring that the terminal device measures the CSI-RS and measures the SSB to achieve the same measurement purpose.
  • At least one CSI-RS and at least one SSB have a QCL-type D relationship; or, the beam directions of at least one CSI-RS and at least one SSB are the same or similar.
  • terminal devices that receive DCI on PDCCH monitoring opportunities belonging to the same PO are divided into L terminal groups, where L is a positive integer; the first bit in each DCI is used to indicate whether there is The first indication information, the second bit is used to indicate whether there is second indication information, the second indication information is used to indicate the terminal group that receives the physical downlink shared channel PDSCH scheduled by the DCI; the first indication information is indicated in the first bit Exist, the second bit indicates that the second indication information exists, the first indication information occupies the third bit and the fourth bit, and the second indication information occupies the fifth bit and the sixth bit; in the first bit Bit indicates that the first indication information exists, and the second bit indicates that the second indication information does not exist, the first indication information occupies the third bit, the fourth bit, the fifth bit, and the sixth bit; One bit indicates that the first indication information does not exist, and the second bit indicates that the second indication information exists, and the second indication information occupies the third bit, the fourth bit, the fifth bit, and the sixth bit.
  • the present application provides a network device, the network device includes: a processing unit and a communication unit, the processing unit is configured to send at least one DCI, at least one DCI, on PDCCH monitoring opportunities belonging to the same PO through the communication unit All or part of the first indication information is used to indicate that at least one CSI-RS is available, at least one CSI-RS corresponds to at least one SSB, and at least one SSB is used to send the first indication information.
  • the processing unit is further configured to send the CSI-RS indicated as available by the first indication information through the communication unit.
  • the processing unit is also used to adopt a communication unit to configure N CSI-RSs for the terminal device through SIB or high-level signaling, and the N CSI-RSs include the CSI indicated as available by the first indication information. -RS.
  • the processing unit is also used to adopt a communication unit to configure the corresponding relationship between N CSI-RS and M SSBs for terminal equipment through SIB or high-level signaling, and M SSBs are actual network equipment.
  • the correspondence between N CSI-RSs and M SSBs is related to the order of N CSI-RSs in the SIB or higher layer signaling used to configure N CSI-RSs; or, The correspondence between the N CSI-RSs and the M SSBs is related to the identification of the N CSI-RSs.
  • At least one CSI-RS has a spatial position relationship with at least one SSB.
  • At least one CSI-RS and at least one SSB have a QCL-type D relationship; or, the beam directions of at least one CSI-RS and at least one SSB are the same or similar.
  • terminal devices that receive DCI on PDCCH monitoring opportunities belonging to the same PO are divided into L terminal groups, where L is a positive integer; the first bit in each DCI is used to indicate whether there is The first indication information, the second bit is used to indicate whether there is second indication information, the second indication information is used to indicate the terminal group that receives the physical downlink shared channel PDSCH scheduled by the DCI; the first indication information is indicated in the first bit Exist, the second bit indicates that the second indication information exists, the first indication information occupies the third bit and the fourth bit, and the second indication information occupies the fifth bit and the sixth bit; in the first bit Bit indicates that the first indication information exists, and the second bit indicates that the second indication information does not exist, the first indication information occupies the third bit, the fourth bit, the fifth bit, and the sixth bit; One bit indicates that the first indication information does not exist, and the second bit indicates that the second indication information exists, and the second indication information occupies the third bit, the fourth bit, the fifth bit, and the sixth bit.
  • the present application provides a terminal device.
  • the terminal device includes a processing unit and a communication unit.
  • the processing unit is configured to receive DCI at the PDCCH monitoring opportunity of the PO through the communication unit.
  • the DCI includes first indication information, and An indication information is used to indicate that at least one CSI-RS is available, at least one CSI-RS corresponds to at least one SSB, and at least one SSB corresponds to a PDCCH monitoring opportunity; the processing unit is further configured to receive through the communication unit that the first indication information indicates Available CSI-RS.
  • the processing unit is further configured to receive, through the communication unit, SIB or high-level signaling used by the network device to configure N CSI-RSs, and the N CSI-RSs include those indicated as available by the first indication information.
  • CSI-RS CSI-RS.
  • the processing unit is further configured to receive, through the communication unit, SIB or high-level signaling used by the network device to configure the correspondence between N CSI-RSs and M SSBs, and the M SSBs are network devices.
  • the SSB actually sent.
  • the correspondence between N CSI-RSs and M SSBs is related to the order of N CSI-RSs in the SIB or higher layer signaling used to configure N CSI-RSs; or, The correspondence between the N CSI-RSs and the M SSBs is related to the identification of the N CSI-RSs.
  • At least one CSI-RS has a spatial position relationship with at least one SSB.
  • the at least one CSI-RS and the at least one SSB have a quasi co-located QCL-type D relationship; or, the beam directions of the at least one CSI-RS and the at least one SSB are the same or similar.
  • terminal devices that receive DCI on PDCCH monitoring opportunities belonging to the same PO are divided into L terminal groups, where L is a positive integer; the first bit in each DCI is used to indicate whether there is The first indication information, the second bit is used to indicate whether there is second indication information, the second indication information is used to indicate the terminal group that receives the physical downlink shared channel PDSCH scheduled by the DCI; the first indication information is indicated in the first bit Exist, the second bit indicates that the second indication information exists, the first indication information occupies the third bit and the fourth bit, and the second indication information occupies the fifth bit and the sixth bit; in the first bit Bit indicates that the first indication information exists, and the second bit indicates that the second indication information does not exist, the first indication information occupies the third bit, the fourth bit, the fifth bit, and the sixth bit; One bit indicates that the first indication information does not exist, and the second bit indicates that the second indication information exists, and the second indication information occupies the third bit, the fourth bit, the fifth bit, and the sixth bit.
  • the present application provides a communication device, including: a processor and a storage medium; the storage medium includes instructions, and the processor is used to execute the instructions to implement any one of the possible implementation manners of the first aspect and the first aspect
  • the communication device can be a network device or a chip in the network device.
  • the present application provides a communication device, including: a processor and a storage medium; the storage medium includes instructions, and the processor is used to execute the instructions to implement any possible implementation manner of the second aspect and the second aspect
  • the communication device can be a terminal device or a chip in the terminal device.
  • the present application provides a computer-readable storage medium with instructions stored in the computer-readable storage medium.
  • the network device can perform any of the tasks described in the first aspect and the first aspect.
  • the present application provides a computer-readable storage medium with instructions stored in the computer-readable storage medium.
  • the terminal device can execute any of the second and second aspects.
  • the present application provides a computer program product containing instructions.
  • the computer program product When the computer program product is run on a network device, the network device executes as described in the first aspect and any one of the possible implementation manners of the first aspect. Described communication method.
  • the present application provides a computer program product containing instructions, when the computer program product is run on a terminal device, the terminal device can execute as described in the second aspect and any one of the possible implementation manners of the second aspect. Described communication method.
  • the present application provides a communication system, including a network device, and a terminal device that communicates with the network device.
  • the network device is configured to perform as described in the first aspect and any one of the possible implementations of the first aspect.
  • the terminal device is used to implement the communication method described in the second aspect and any one of the possible implementation manners of the second aspect.
  • FIG. 1 is a system architecture diagram of a communication system provided by an embodiment of this application.
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 3 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 4 is a corresponding relationship between a PDCCH monitoring opportunity in a PO and an SSB provided by an embodiment of the application;
  • FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 6 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of the hardware structure of another communication device provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of the hardware structure of a terminal device provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of the hardware structure of a network device provided by an embodiment of the application.
  • A/B can mean A or B.
  • “And/or” in this article is only an association relationship describing the associated objects, which means that there can be three kinds of relationships.
  • a and/or B can mean: A alone exists, A and B exist at the same time, and B exists alone. These three situations.
  • “at least one” means one or more, and “plurality” means two or more.
  • the words “first” and “second” do not limit the quantity and order of execution, and the words “first” and “second” do not limit the difference.
  • the present application can be applied to the communication system 100 shown in FIG. 1, and the communication system 100 includes a network device 10 and a terminal device 20. Among them, the network device 10 and the terminal device 20 can communicate through a wireless link.
  • the communication systems in the embodiments of this application include, but are not limited to, long term evolution (LTE) systems, fifth-generation (5th-generation, 5G) systems, new radio (NR) systems, and wireless local area networks (WLANs). area networks, WLAN) systems and future evolution systems or multiple communication fusion systems.
  • LTE long term evolution
  • 5th-generation 5G
  • NR new radio
  • WLAN wireless local area networks
  • area networks WLAN
  • future evolution systems or multiple communication fusion systems wireless local area networks
  • the method provided in the embodiments of the present application can be specifically applied to the evolved-universal terrestrial radio access network (E-UTRAN) and the next generation-radio access network (next generation-radio access network). , NG-RAN) system.
  • E-UTRAN evolved-universal terrestrial radio access network
  • N-RAN next generation-radio access network
  • the network device in the embodiment of the present application is an entity on the network side that is used to send signals, receive signals, or send signals and receive signals.
  • the network equipment may be a device that is deployed in a radio access network (RAN) to provide wireless communication functions for terminal equipment, such as a transmission reception point (TRP), a base station (for example, an evolved base station ( evolved NodeB, eNB or eNodeB), next generation node base station (gNB), next generation eNB (ng-eNB), etc.), various forms of control nodes (for example, network controllers, A wireless controller (for example, a wireless controller in a cloud radio access network (CRAN) scenario), a roadside unit (RSU), and the like.
  • RAN radio access network
  • the network equipment may be various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points (access points, AP), etc., and may also be antenna panels of base stations.
  • the control node may be connected to multiple base stations and configure resources for multiple terminal devices covered by the multiple base stations.
  • RAT radio access technologies
  • the names of devices with base station functions may be different. For example, it may be called eNB or eNodeB in the LTE system, and it may be called gNB in the 5G system or NR system.
  • the specific name of the base station is not limited in this application.
  • the network equipment may also be the network equipment in the public land mobile network (PLMN) that will evolve in the future.
  • PLMN public land mobile network
  • the terminal device in the embodiment of the present application is an entity on the user side that is used to receive signals, or send signals, or receive signals and send signals.
  • the terminal device is used to provide users with one or more of voice services and data connectivity services.
  • Terminal equipment can also be called user equipment (UE), terminal, access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user Device.
  • UE user equipment
  • the terminal device may be a vehicle to everything (V2X) device, for example, a smart car (smart car or intelligent car), a digital car (digital car), an unmanned car (unmanned car or driverless car or pilotless car or automobile), Automatic car (self-driving car or autonomous car), pure electric vehicle (pure EV or Battery EV), hybrid electric vehicle (HEV), range extended EV (REEV), plug-in hybrid Plug-in HEV (PHEV), new energy vehicle (new energy vehicle), etc.
  • V2X vehicle to everything
  • the terminal device may also be a device-to-device (D2D) device, for example, an electric meter, a water meter, and so on.
  • D2D device-to-device
  • the terminal device can also be a mobile station (MS), subscriber unit (subscriber unit), drone, Internet of things (IoT) equipment, station (ST) in WLAN, and cellular phone (cellular phone).
  • phone smart phone (smart phone), cordless phone, wireless data card, tablet computer, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital processing ( personal digital assistant (PDA) device, laptop computer, machine type communication (MTC) terminal, handheld device with wireless communication function, computing device or other processing device connected to wireless modem, vehicle Devices, wearable devices (also called wearable smart devices).
  • the terminal device may also be a terminal device in a next-generation communication system, for example, a terminal device in a 5G system or a terminal device in a future evolved PLMN, a terminal device in an NR system, and so on.
  • the idle state refers to the state that the terminal device is in when the terminal device has completed camping in the cell, but has not undergone the random access process.
  • the terminal device usually enters the idle state after being turned on or after the RRC is released.
  • the connected state refers to the state that the terminal device is in when it has not performed the RRC release after completing the random access process.
  • the terminal device can perform data transmission with the network device in the connected state.
  • the state of the terminal device transitions to the connected state.
  • the terminal device is in the connected state, after completing the RRC release, the state of the terminal device transitions to the idle state.
  • the inactive state is the state between the connected state and the idle state.
  • the user plane bearer of the air interface has been suspended (suspend), the user plane bearer and control plane bearer between the radio access network (RAN) and the core network (CN) Still being maintained.
  • RAN radio access network
  • CN core network
  • the CSI-RS is used to evaluate beam quality. Because the beam can correspond to CSI-RS resources.
  • the terminal device can determine the quality of the CSI-RS resource by measuring and evaluating the CSI-RS resource.
  • the terminal device reports the quality of the CSI-RS resource obtained by measurement and evaluation to the network device, and the network device can determine the quality of the beam according to the quality of the CSI-RS resource and the corresponding relationship between the beam and the CSI-RS resource.
  • the network device In order to determine the quality of the beam, the network device needs to send measurement configuration information to the terminal device.
  • the measurement configuration information mainly includes two parts: resource configuration information and reported configuration information.
  • Resource configuration information is information related to measurement resources, and is configured in the protocol through a three-level structure (resource configuration resourceConfig-resource set resourceSet-resource resource).
  • the network device may configure one or more resource configurations for the terminal device, each resource configuration includes one or more resource sets, and each resource set may include one or more resources.
  • Each resource configuration/resource set/resource includes its own index. In addition, it also includes some other parameters, such as the period of the resource, the signal type corresponding to the resource, and so on.
  • the DRX mode is a mode for the terminal device to receive signals.
  • the purpose is to reduce the power consumption of the terminal device.
  • the terminal device can decide whether to use the DRX mode to receive the signal according to the configuration of the network device.
  • the terminal device can receive CSI-RS within the active time (active time), and perform channel state information (CSI) measurement, and at the active time
  • the terminal device will enter the sleep time. During the sleep time, the terminal device will not receive CSI-RS or perform CSI measurement.
  • the paging message is also called a paging message, which is used to trigger the terminal device to establish an RRC connection, or to notify the terminal device to update the system information.
  • the content of the paging message is sent to the terminal device through the physical downlink shared channel (PDSCH), and the PDSCH is the PDCCH scheduling scrambled by the paging radio network temporary identifier (P-RNTI) of.
  • P-RNTI paging radio network temporary identifier
  • the process for the terminal device to obtain the paging message is: the terminal device in the idle or inactive state periodically wakes up, after the terminal device wakes up, it monitors the PDCCH scrambled by the P-RNTI, analyzes the DCI in the PDCCH to determine the location of the PDSCH ( For example, time-frequency location) information.
  • the terminal device receives the PDSCH according to the location information of the PDSCH, and the terminal device obtains the paging message in the PDSCH.
  • the terminal device determines whether the paging message pagingrecordList includes its own terminal device identifier. If it is, the terminal device performs a corresponding operation (for example, establishing an RRC connection; or returning from an inactive state to an idle state, etc.).
  • the PO is a collection of one or more PDCCH monitoring occasions (PDCCH monitoring opportunities).
  • a PO includes one or more time slots.
  • the network device transmits the PDCCH in the time slot included in the PO.
  • a terminal device in an idle state or an inactive state monitors the PDCCH sent by a network device in a PO in each DRX cycle.
  • the beam is a communication resource.
  • the beam can be a wide beam, or a narrow beam, or other types of beams.
  • the beam forming technology may be beamforming technology or other technical means.
  • the beamforming technology can be specifically a digital beamforming technology, an analog beamforming technology, and a hybrid digital/analog beamforming technology. Different beams can be considered as different resources.
  • the same information or different information can be sent through different beams.
  • multiple beams with the same or similar communication characteristics may be regarded as one beam.
  • a beam can include one or more antenna ports for transmitting data channels, control channels, and sounding signals.
  • a transmission beam can refer to the distribution of signal strengths formed in different directions in space after a signal is sent through an antenna.
  • the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space. It is understandable that one or more antenna ports forming a beam can also be regarded as an antenna port set.
  • the beam can be divided into the transmitting beam and the receiving beam of the network device, and the transmitting beam and the receiving beam of the terminal device.
  • the transmitting beam of the network device is used to describe the beamforming information on the transmitting side of the network device
  • the receiving beam of the network device is used to describe the beamforming information on the receiving side of the network device.
  • the transmitting beam of the terminal device is used to describe the beamforming information on the transmitting side of the terminal device
  • the receiving beam of the terminal device is used to describe the beamforming information on the receiving side of the terminal device. That is, beams are used to describe beamforming information.
  • the beam may correspond to one or more of time resources, space resources, and frequency domain resources.
  • the beam may also correspond to a reference signal resource (for example, a reference signal resource for beamforming), or beamforming information.
  • a reference signal resource for example, a reference signal resource for beamforming
  • the beam may also correspond to the information associated with the reference signal resource of the network device, where the reference signal may be CSI-RS, SSB, demodulation reference signal (DMRS), phase tracking signal (phase tracking reference signal) , PTRS), tracking reference signal (tracking reference signal, TRS), etc.
  • the information associated with the reference signal resource may be a reference signal resource identifier, or QCL information (especially type D QCL).
  • the reference signal resource identifier corresponds to a transceiver beam pair established during the previous measurement based on the reference signal resource, and the terminal device can infer beam information through the reference signal resource index.
  • the beam may also correspond to a spatial filter (spatial domain filter) and a spatial domain transmission filter (spatial domain transmission filter).
  • a spatial filter spatial domain filter
  • a spatial domain transmission filter spatial domain transmission filter
  • the QCL information is used to indicate the QCL relationship between the two reference signals, where the target reference signal may generally be DMRS, CSI-RS, and so on.
  • the source reference signal can generally be CSI-RS, TRS, SSB, etc.
  • the spatial characteristic parameters of the two reference signals or channels that satisfy the QCL relationship are the same, so that the spatial characteristic parameters of the target reference signal can be inferred based on the source reference signal resource index.
  • the spatial characteristic parameters include one or more of the following parameters:
  • Angle of arrival AoA
  • Dominant AoA average AoA
  • power angular spectrum PAS
  • AoD angle of departure
  • main AoD average AoD
  • AoD Power angle spectrum terminal device transmit beamforming
  • terminal device receive beamforming spatial channel correlation
  • These spatial characteristic parameters describe the spatial channel characteristics between the antenna ports of the source reference signal and the target reference signal, and help the terminal device to complete the receiving-side beamforming or receiving-side processing process according to the QCL information. It should be understood that the terminal device may receive the target reference signal according to the receiving beam information of the source reference signal indicated by the QCL information.
  • the network equipment side may indicate the DMRS of the PDCCH or PDSCH and one of the multiple reference signal resources previously reported by the terminal equipment.
  • the reference signal may be a CSI-RS.
  • each reported CSI-RS resource index corresponds to a transmit and receive beam pair established during the previous measurement based on the CSI-RS resource. It should be understood that the received beam information of the two reference signals or channels that satisfy the QCL relationship is the same, so that the terminal device can infer the received beam information of receiving the PDCCH or PDSCH based on the reference signal resource index.
  • QCL QCL
  • Network equipment can configure one or more types of QCL for terminal equipment at the same time.
  • the four types of QCL are:
  • QCL-TypeA ie QCL-Type A: ⁇ Doppler frequency shift, Doppler spread, average delay, delay spread ⁇ .
  • QCL-TypeB ie QCL-Type B: ⁇ Doppler frequency shift, Doppler spread ⁇ .
  • QCL-TypeC ie QCL-Type C: ⁇ Doppler frequency shift, average delay ⁇ .
  • QCL-TypeD ie QCL-Type D: ⁇ airspace receiving parameters ⁇ .
  • QCL-TypeD can describe that the beams of two reference signals with a QCL relationship are similar, and some channel parameters are similar or the same.
  • the SSB includes at least one of a primary synchronization signal (primary synchronization signal, PSS), a secondary synchronization signal (secondary synchronization signal, SSS), and a physical broadcast channel (physical broadcast bhannel, PBCH).
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • a terminal device in an idle state or an inactive state needs to measure the SSB to achieve the purpose of time-frequency tracking and wireless resource measurement.
  • the terminal device since the SSB sent by the network device is sparsely distributed in space, the terminal device may need to measure the SSB multiple times to complete the SSB measurement. This will result in higher power consumption when the terminal equipment in the idle state or in the inactive state performs the SSB measurement.
  • this application proposes a method in which a terminal device in an idle state or an inactive state measures CSI-RS to achieve the purpose of time-frequency tracking and wireless resource measurement. Since the CSI-RS sent by the network equipment is distributed in a dense degree in space, it is usually greater than the SSB distributed in a dense degree in a space. In this way, the terminal device does not need to measure CSI-RS multiple times to achieve the same purpose as measuring SSB (real-time frequency tracking, and wireless resource measurement), so that the power consumption of the terminal device during CSI-RS measurement is less than that of the terminal device. The power consumption during SSB measurement.
  • this application provides a communication method, and the network equipment can indicate to the terminal equipment through the DCI in the PDCCH Available CSI-RS corresponding to SSB.
  • the terminal device can receive the available CSI-RS and measure the CSI-RS to achieve the purpose of time-frequency tracking and radio resource measurement. Since the power consumption of the terminal equipment when performing CSI-RS measurement is less than the power consumption of terminal equipment when performing SSB measurement, compared with using SSB for time-frequency tracking and wireless resource measurement, CSI-RS is used for time-frequency tracking. Tracking, and wireless resource measurement can reduce the power consumption of terminal equipment.
  • the embodiment of the present application provides a communication method. As shown in FIG. 2, the method includes:
  • the network device sends at least one DCI.
  • the terminal device receives the DCI.
  • the DCI received by the terminal device is the DCI in at least one DCI sent by the network device.
  • All or part of the at least one DCI includes first indication information, and each first indication information is used to indicate that at least one CSI-RS is available, at least one CSI-RS corresponds to at least one SSB, and at least one SSB is used to send the first indication information.
  • one PDCCH monitoring opportunity is used to send one PDCCH, and one PDCCH includes one DCI.
  • the PO includes L PDCCH monitoring opportunities.
  • the L PDCCH monitoring opportunities have a corresponding relationship with the M SSBs.
  • one SSB can correspond to one or more PDCCH monitoring opportunities
  • one PDCCH monitoring opportunity can also correspond to one or more SSBs.
  • the M SSBs are actually SSBs sent by the network device. Among them, L and M are both positive integers.
  • the PDCCH monitoring opportunity corresponding to the SSB can also be understood as the DCI sent on the PDCCH monitoring opportunity corresponding to the SSB.
  • the network device sends the corresponding DCI.
  • the DCI can correspond to one or more DCIs
  • one DCI can also correspond to one or more SSBs.
  • the multiple DCIs all include the first indication information, or some of the DCIs in the multiple DCIs include the first indication information.
  • the first indication information included in the DCI is used to indicate whether the CSI-RS corresponding to one or more of the multiple SSBs is available.
  • a CSI-RS available means that the CSI-RS sent by the network device can be received and measured by the terminal device.
  • one PO includes 4 PDCCH monitoring opportunities.
  • the network device sends a DCI on each monitoring opportunity. For example, on the PDCCH monitoring opportunity corresponding to SSB#0, the network device sends DCI-1, on the PDCCH monitoring opportunity corresponding to SSB#1, the network device sends DCI-2, and on the PDCCH monitoring opportunity corresponding to SSB#2, the network device sends DCI-1.
  • the device sends DCI-3, and on the PDCCH monitoring opportunity corresponding to SSB#3, the network device sends DCI-4.
  • the first indication information included in DCI-1 is used to indicate whether the CSI-RS corresponding to SSB#0 is available
  • the first indication information included in DCI-2 is used to indicate whether the CSI-RS corresponding to SSB#1 is available Available
  • the first indication information included in DCI-3 is used to indicate whether the CSI-RS corresponding to SSB#2 is available
  • the first indication information included in DCI-4 is used to indicate whether the CSI-RS corresponding to SSB#3 is available.
  • the network device only needs to indicate in each DCI whether the CSI-RS corresponding to the SSB corresponding to the DCI is available, and does not need to indicate in each DCI whether all CSI-RS are available. Thereby saving the bit overhead of DCI.
  • the network device sends the CSI-RS indicated as available by the first indication information.
  • the terminal device receives the CSI-RS.
  • the CSI-RS that is indicated as available by the first indication information sent by the network device may be a CSI-RS configured by the network device for other terminal devices that are in a connected state.
  • the network device instructs the terminal device in the idle state or the inactive state to receive and measure the CSI-RS through the first indication information. In this way, the network device does not need to reconfigure the CSI-RS for the terminal device in the idle state or in the inactive state. Thereby saving the network resources of the network equipment.
  • the terminal device After the terminal device receives the CSI-RS indicated as available by the first indication information, the terminal device measures the CSI-RS to achieve the purpose of time-frequency tracking and radio resource measurement.
  • the network device indicates the available CSI-RS corresponding to the SSB through the DCI sent on the PDCCH monitoring opportunity corresponding to the SSB, and the terminal device determines and receives the available CSI-RS according to the DCI, and then measures the CSI-RS -RS to achieve the purpose of time-frequency tracking and radio resource measurement. Since the power consumption generated when the terminal device performs the CSI-RS measurement is less than the power consumption generated when the terminal device performs the SSB measurement, the communication method provided in this application can reduce the power consumption of the terminal device.
  • the method also includes:
  • the network device configures N CSI-RSs for the terminal device through SIB or high-level signaling.
  • the terminal device receives the SIB or high-level signaling used by the network device to configure N CSI-RS.
  • the N CSI-RSs include CSI-RSs indicated as available by the first indication information.
  • the method further includes:
  • the network device determines the correspondence between N CSI-RSs and M SSBs.
  • M SSBs are SSBs actually sent by the network device.
  • the SSB corresponding to any one PDCCH monitoring opportunity in the foregoing embodiment belongs to the M SSBs.
  • one CSI-RS corresponds to one or more SSBs
  • one SSB corresponds to one or more CSI-RSs.
  • the network device configures the corresponding relationship between N CSI-RS and M SSB for the terminal device through SIB or high-level signaling.
  • the terminal device receives the SIB or high-level signaling used by the network device to configure the correspondence between N CSI-RSs and M SSBs.
  • the correspondence between N CSI-RSs and M SSBs may be in the following two cases: Case 1: Group correspondence, Case 2: Spatial location relationship correspondence. Case 1 and Case 2 are respectively introduced below.
  • the process for the network device to determine the correspondence between N CSI-RSs and M SSBs includes the following steps I to III:
  • the network device determines the number M of SSB and the number N of CSI-RS.
  • the network equipment divides the N CSI-RS into M CSI-RS groups.
  • the M CSI-RS groups have a one-to-one correspondence with the M SSBs.
  • the number of CSI-RS in each CSI-RS group may be the same or different, which is not limited in this application.
  • the CSI-RS may belong to one or more CSI-RS groups.
  • the CSI-RS corresponds to one SSB.
  • the CSI-RS corresponds to multiple SSBs.
  • the CSI-RS group corresponding to the SSB may include one or more CSI-RSs.
  • the SSB corresponds to one CSI-RS.
  • the CSI-RS group corresponding to the SSB includes multiple CSI-RSs
  • the SSB corresponds to multiple CSI-RSs.
  • the network equipment determines the CSI-RS group corresponding to each SSB among the M SSBs.
  • N CSI-RS and M SSB is related to the order of N CSI-RS in SIB or high-level signaling used to configure N CSI-RS; or, N CSI-RS -The correspondence between RS and M SSBs is related to the identities of N CSI-RSs.
  • the network device when the network device divides the N CSI-RS into M CSI-RS groups, the network device can configure the N CSI-RS in the SIB or high-level signaling according to the N CSI-RS.
  • the N CSI-RSs are grouped sequentially (denoted as grouping mode a); or, the network device may group the N CSI-RSs according to the identifiers of the N CSI-RSs (denoted as grouping mode b). The two grouping methods are described separately below.
  • the network device groups the CSI-RS according to the order of the CSI-RS.
  • the order of CSI-RS may include: the order of bits occupied by CSI-RS in signaling, the order of CSI-RS in the time domain, the order of CSI-RS in the frequency domain, or the network equipment configuring CSI-RS. Any one of the RS sequence is not limited in this application.
  • the network device is actually configured with 8 CSI-RS.
  • the 8 CSI-RS are: CSI-RS1, CSI-RS2, CSI-RS3, CSI-RS4, CSI-RS5, CSI-RS6, CSI-RS7, CSI-RS8.
  • the network device sorts the 8 CSI-RS according to the order of the bits occupied by the 8 CSI-RS in the signaling. After sorting, the network device groups the 8 CSI-RSs in pairs in a front-to-back order. Specifically, the network device may determine that CSI-RS1 and CSI-RS2 form CSI-RS group 1, CSI-RS3 and CSI-RS4 form CSI-RS group 2, CSI-RS5 and CSI-RS6 form CSI-RS group 3.
  • CSI -RS7 and CSI-RS8 form CSI-RS group 4.
  • the network device groups the CSI-RS according to the CSI-RS identifier.
  • the CSI-RS identifier may be configured for each CSI-RS when the network device configures the CSI-RS.
  • the network device is actually configured with 8 CSI-RS.
  • the identifiers of the eight CSI-RSs are: identifier 1, identifier 2, identifier 3, identifier 4, identifier 5, identifier 6, identifier 7, and identifier 8.
  • the network device groups the 8 CSI-RSs in pairs according to the 8 identifiers. For example, the network device may determine that CSI-RSs corresponding to ID 1 and ID 2 form CSI-RS group 1, CSI-RSs corresponding to ID 3 and ID 4 form CSI-RS group 2, and CSI-RSs corresponding to ID 5 and ID 6 CSI-RS group 3 is formed, and CSI-RSs corresponding to ID 7 and ID 8 constitute CSI-RS group 4.
  • the network device in the embodiment of this application may also use other methods to group the CSI-RS, which is not limited in this application.
  • the CSI-RS may be a CSI-RS configured by the network device, or may be a CSI-RS set configured by the network device.
  • the method for the network device to group the CSI-RS set is similar to the method for grouping the CSI-RS, and will not be repeated.
  • the network device can determine the SSB corresponding to each CSI-RS group. For example, the network device actually sends 4 SSBs, namely SSB#0, SSB#1, SSB#2, and SSB#3. Then the network device can determine that CSI-RS group 1 corresponds to SSB#0, CSI-RS group 2 corresponds to SSB#1, CSI-RS group 3 corresponds to SSB#2, and CSI-RS group 4 corresponds to SSB#3.
  • At least one CSI-RS has a spatial position relationship with at least one SSB.
  • at least one CSI-RS and at least one SSB have a QCL-TypeD relationship; or, at least one CSI-RS and at least one SSB have the same or similar beam directions.
  • the network device can be considered to have a QCL-TypeD relationship with the SSB.
  • the CSI-RS corresponds to the SSB.
  • the network device when the network device sends the SSB, the network device first determines the beam direction of each SSB, and the network device sends the SSB according to the beam direction of each SSB, so that the SSB sent by the network device Can cover the largest possible area.
  • the network device when the network device sends CSI-RS, the network device first determines the beam direction of each CSI-RS. The network device transmits each CSI-RS according to the beam direction of each CSI-RS.
  • the network device can determine the correspondence between the SSB and the CSI-RS according to the beam direction of the SSB and the beam direction of the CSI-RS. For example, the network device determines that the CSI-RS with the same beam direction as the SSB or the beam direction similarity is greater than a preset value is used as the CSI-RS corresponding to the SSB.
  • the terminal device can determine the correspondence between the PDCCH monitoring opportunity and the SSB through the following steps 1 to 3. Steps 1 to 3 will be described in detail below.
  • the network equipment and terminal equipment can determine the number of each PDCCH monitoring opportunity according to the time domain position of each PDCCH monitoring opportunity in the PO corresponding to the L PDCCH monitoring opportunities.
  • Each PDCCH monitoring opportunity in the PO corresponds to a different time domain location, and the network device and the terminal device can determine the number of each PDCCH monitoring opportunity according to the sequence of the time domain location of the PDCCH monitoring opportunity in the PO.
  • the network device and the terminal device may determine that the number of the PDCCH monitoring opportunity corresponding to the first time domain position in the PO is number 1, and the number of the PDCCH monitoring opportunity corresponding to the second time domain position in the PO is number 2 , The number of the PDCCH monitoring opportunity corresponding to the third time domain position in the PO is number 3.
  • PDCCH monitoring opportunities is only for distinguishing different PDCCH monitoring opportunities.
  • Network equipment and terminal equipment can also distinguish different PDCCH monitoring opportunities in other forms. This application does not limit this.
  • the network equipment and terminal equipment determine the number of the SSB.
  • the network device and the terminal device determine that the number of the SSB is the index of the SSB.
  • the numbers of the SSBs determined by the network equipment and the terminal equipment are respectively: number 0, number 1, and number 2.
  • the network equipment and terminal equipment determine the corresponding relationship between the SSB and the PDCCH monitoring opportunity according to the number of the PDCCH monitoring opportunity and the number of the SSB.
  • the network device and the terminal device sequentially correspond the numbers of the PDCCH monitoring opportunities with the numbers of the SSBs, and determine the corresponding relationship between the SSB and the PDCCH monitoring opportunities.
  • the PDCCH monitoring opportunity number 1 corresponds to SSB#0 (ie SSB number 0)
  • the PDCCH monitoring opportunity number 2 corresponds to SSB#1 (ie SSB number 1)
  • the PDCCH monitoring opportunity number 3 corresponds to SSB#2 (ie SSB number 2).
  • the correspondence between PDCCH monitoring opportunities and SSBs can be: one-to-one correspondence between PDCCH monitoring opportunities and SSBs; or one PDCCH monitoring opportunity corresponds to multiple SSBs, and one SSB corresponds to multiple PDCCH monitoring Chance.
  • the corresponding relationship between the PDCCH monitoring opportunity and the SSB is related to the search space identifier configured by the network device for the paging search space, and the mode of the mapping relationship between the SSB and the control resource set (CORESET) 0, which will be explained in the following cases.
  • the network device configures L PDCCHs in one PO, and the L PDCCHs have a corresponding relationship with the M SSBs.
  • M is equal to L.
  • the Kth PDCCH monitoring opportunity among the L PDCCH monitoring opportunities corresponds to the Kth SSB among the M SSBs.
  • the M SSBs correspond to the L PDCCH monitoring opportunities one-to-one.
  • the network device actually sends three SSBs, namely SSB#0, SSB#1, and SSB#2.
  • one PO includes 3 PDCCH monitoring opportunities, which are respectively denoted as PDCCH-1, PDCCH-2, and PDCCH-3.
  • a PO is a collection of 3 PDCCH monitoring opportunities.
  • PDCCH-1 corresponds to SSB#0
  • PDCCH-2 corresponds to SSB#1
  • PDCCH-3 corresponds to SSB#2.
  • the search space identifier configured by the network device for the paging search space is 0, and the mode of the mapping relationship between SSB and CORESET0 is the first mode (may also be referred to as mode 1).
  • one SSB corresponds to one or more paging search spaces.
  • the network device may configure PDCCH monitoring opportunities in each of the multiple paging search spaces, and the network device may configure PDCCH monitoring opportunities in the multiple paging search spaces. It is the same or it may be different.
  • one SSB can correspond to one or more PDCCH monitoring opportunities.
  • the paging search spaces corresponding to multiple different SSBs may overlap (that is, multiple different SSBs correspond to the same paging search space).
  • the PDCCH monitoring opportunities in the same paging search space correspond to multiple SSBs.
  • one SSB can correspond to one or more PDCCH monitoring opportunities
  • one PDCCH monitoring opportunity can correspond to one or more SSBs.
  • the corresponding relationship between SSB and PDCCH monitoring opportunities needs to be determined according to the number of paging search spaces corresponding to each SSB, the PDCCH monitoring opportunities configured by the network equipment in each paging search space, and the overlap relationship of the paging search spaces.
  • the network device actually sends 3 SSBs, namely SSB#0, SSB#1, and SSB#2, and each SSB corresponds to 2 paging search spaces.
  • SSB#0 corresponds to paging search space 1 and paging search space 2
  • SSB#1 corresponds to paging search space 2 and paging search space 3.
  • SSB#2 corresponds to paging search space 3 and paging search space 4.
  • the PDCCH monitoring opportunity configured by the network device in paging search space 1 is PDCCH-1
  • the PDCCH monitoring opportunity configured by the network device in paging search space 2 is also PDCCH-1
  • the PDCCH monitoring opportunity configured by the network device in paging search space 3 It is PDCCH-2
  • the PDCCH monitoring opportunity configured by the network device in the paging search space 4 is PDCCH-3.
  • the network device determines that the PDCCH monitoring opportunity corresponding to SSB#0 is PDCCH-1 (that is, the PDCCH monitoring opportunity configured by the network device in paging search space 1 and paging search space 2), and the network device determines the PDCCH monitoring opportunity corresponding to SSB#1
  • the opportunities are PDCCH-1 and PDCCH-2 (that is, the PDCCH monitoring opportunities configured by the network equipment in the paging search space 2 and paging search space 3), and the PDCCH monitoring opportunities corresponding to SSB#2 are PDCCH-2 and PDCCH-3 (that is, the network PDCCH monitoring opportunities configured by the device in paging search space 3 and paging search space 4).
  • the network device determines that the SSB corresponding to PDCCH-1 is: SSB#0, SSB#1.
  • the network device determines that the SSB corresponding to PDCCH-2 is: SSB#1, SSB#2.
  • the network device determines that the SSB corresponding to PDCCH-3 is: SSB#2.
  • the first indication information in PDCCH-1 is used to indicate whether the CSI-RS corresponding to SSB#0 and SSB#1 is available.
  • the first indication information in PDCCH-2 is used to indicate whether the CSI-RS corresponding to SSB#1 and SSB#2 is available.
  • the first indication information in PDCCH-3 is used to indicate whether the CSI-RS corresponding to SSB#2 is available.
  • Case 3 The search space identifier configured by the network device for the paging search space is 0, and the mode of the mapping relationship between SSB and CORESET0 is not the first mode.
  • both the network device and the terminal device can determine the correspondence between the PDCCH monitoring opportunity and the SSB, which improves the applicability of the embodiments of the present application.
  • the DCI generated by the network device in addition to the first indication information, also includes at least one of second indication information, third indication information, and fourth indication information.
  • the second indication information in one DCI is used to indicate the terminal group that receives the PDSCH scheduled by the DCI.
  • the third indication information in one DCI is used to indicate whether the first indication information exists.
  • the fourth indication information in one DCI is used to indicate whether there is second indication information.
  • the network device cannot perceive the terminal device in the idle state or the inactive state. Therefore, the network device will send the paging message in the form of broadcast. All terminal devices in a PO need to receive the DCI in the PDCCH and obtain the PDSCH scheduled by the DCI. The network device obtains the paging message from the PDSCH.
  • the pagingrecordList in the paging message is used to indicate the terminal device that receives the paging message. For terminal devices other than the terminal device indicated by the identifier in the pagingrecordList, it is unnecessary to receive the paging message in the PDSCH, which will cause unnecessary power consumption of the terminal device.
  • the network device can group the terminal devices in a PO, and add second indication information to the DCI in a PO, and use the second indication information to indicate the terminal group receiving the PDSCH scheduled by the DCI, and the terminals in other terminal groups
  • the device does not need to receive the PDSCH.
  • the power consumption of the terminal devices of other terminal groups can be reduced.
  • the network device can carry these indication information through bits reserved in the DCI.
  • the bits of the indication information carried by the DCI are different, which will be described separately below.
  • DCI only carries the first indication information.
  • the first indication information may occupy one or more bits in the DCI.
  • the one or more bits may be all or part of the bits reserved in the DCI.
  • the one or more bits may be fixed bits.
  • the one or more bits may be the first 3 bits of the 6 reserved bits, and the other 3 bits are still reserved bits.
  • the one or more bits may also be bits determined by the network device according to the number of CSI-RS indicated by the first indication information. For example, when the DCI includes 6 reserved bits, and the network device determines that the first indication information indicates 2 CSI-RS, the network device determines that the first indication information occupies the first 2 of the 6 reserved bits Bits, the other 4 bits are still reserved bits. The network device determines that the first indication information indicates 4 CSI-RSs, and the network device determines that the first indication information occupies the first 4 bits of the 6 reserved bits, and the other 2 bits are still reserved bits. When the number of CSI-RS indicated by the first indication information is greater than or equal to 6, the network device determines that the first indication information occupies all 6 reserved bits.
  • the DCI carries the first indication information and the third indication information.
  • the third indication information indicates that the first indication information exists.
  • the first indication information occupies one or more bits in the DCI
  • the third indication information occupies one or more bits in the DCI.
  • the first indication information and the third indication information occupy different bits respectively.
  • the bits occupied by the first indication information and the third indication information may be fixed bits in the DCI. For example, when the DCI includes 6 reserved bits, the network device determines that the third indication information occupies the first bit of the 6 reserved bits, and the first indication information occupies the first bit of the 6 bits. 2 to 4 bits.
  • the bits occupied by the first indication information may also be bits determined by the network device according to the number of CSI-RS indicated by the first indication information. For details, refer to the bits occupied by the first indication information in the above-mentioned case I for understanding, and will not be repeated here.
  • DCI only carries the third indication information.
  • the third indication information indicates that the first indication information does not exist.
  • the third indication information may occupy one or more bits in the DCI.
  • the one or more bits may be all or part of the bits reserved in the DCI.
  • the network device may not generate the first indication information, and the DCI does not need to carry the first indication information.
  • the DCI only carries the third indication information, which is used to notify the terminal device that the first indication information does not exist.
  • the terminal device can directly use the method of measuring SSB in the prior art to perform time-frequency tracking, the purpose of wireless resource measurement, and so on.
  • DCI only carries the second indication information.
  • the network device only instructs the terminal group receiving the PDSCH scheduled by the PDCCH to which the DCI belongs through the DCI.
  • the second indication information may occupy one or more bits in the DCI.
  • the one or more bits may be all or part of the bits reserved in the DCI.
  • one or more bits occupied by the second indication information is the same as the one or more bits occupied by the first indication information when the DCI only carries the first indication information. Multiple bits are similar.
  • the bit position occupied by the second indication information in the DCI reference may be made to the description of the bit position occupied by the first indication information in the aforementioned case I, which will not be repeated here.
  • the DCI carries the second indication information and the fourth indication information.
  • the fourth indication information indicates that the second indication information exists.
  • the DCI carries the second indication information and the fourth indication information is similar to the case where the DCI carries the first indication information and the third indication information.
  • the DCI carries the first indication information and the third indication information which will not be repeated here.
  • DCI carries the fourth indication information.
  • the fourth indication information indicates that there is no second indication information.
  • the case where the DCI carries the fourth indication information is similar to the case where the DCI carries the third indication information.
  • the DCI carries the third indication information refer to the description when the DCI carries the third indication information, which will not be repeated here.
  • the DCI carries the first indication information and the second indication information.
  • the first indication information and the second indication information respectively occupy one or more bits in the DCI.
  • the bits occupied by the first indication information and the second indication information may be fixed bits in the DCI determined by the network device. For example, when 6 reserved bits are included in the DCI, the first indication information occupies the first 3 bits of the 6 reserved bits. The second indication information occupies the last 3 bits of the 6 reserved bits.
  • the bits occupied by the first indication information and the second indication information may be the bits that the network device needs to occupy according to the first indication message and the third indication message, respectively, which are in the DCI The allocated bits. For example, when the DCI includes 6 reserved bits, if the first indication information needs to occupy 3 bits, and the second indication information needs to occupy 2 bits. The network device determines that the first indication information occupies the first 3 bits of the 6 reserved bits, and the second indication information occupies the 4th bit and the 5th bit of the 6 reserved bits.
  • the DCI carries at least the third indication information and the fourth indication information.
  • the network device may respectively adopt the following method 1 and method 2 to determine the bits occupied by each indication information.
  • Each indication information occupies a fixed bit position.
  • the DCI also carries the first indication information and the second indication information.
  • the third indication information occupies the first bit of the 6 reserved bits
  • the fourth indication information occupies the second bit of the 6 reserved bits.
  • the indication information occupies the third bit and the fourth bit among the 6 reserved bits.
  • the second indication information occupies the fifth bit and the sixth bit among the 6 reserved bits.
  • the network device determines the bits occupied by each indication information according to whether the first indication information indicated by the third indication information exists and whether the second indication information indicated by the fourth indication information exists. The following description is divided into situations.
  • the third indication information occupies the first bit
  • the fourth indication information occupies the second bit
  • the third indication information indicates the presence of the first indication information
  • the fourth indication information indicates the presence of the second indication information
  • the DCI also carries the first indication information and the second indication information.
  • the first indication information occupies the third bit and the fourth bit
  • the second indication information occupies the fifth bit and the sixth bit.
  • the third indication information indicates that the first indication information exists, and the fourth indication information indicates that the second indication information does not exist.
  • the DCI also carries the first indication information.
  • the first indication information occupies the third bit, the fourth bit, the fifth bit, and the sixth bit.
  • the third indication information indicates that the first indication information does not exist, and the fourth indication information indicates that the second indication information exists.
  • the DCI also carries the second indication information.
  • the second indication information occupies the third bit, the fourth bit, the fifth bit, and the sixth bit.
  • the DCI only carries the third indication information and the fourth indication information.
  • the third bit, fourth bit, fifth bit and sixth bit are not occupied by any indication information.
  • first bit to sixth bit may respectively correspond to the first bit to the sixth bit, and the first bit to the sixth bit among the 6 reserved bits in the DCI. There may also be other correspondences with the 6 reserved bits in the DCI, which is not limited in this application.
  • the network device allocates the first bit of the 6 reserved bits to the third indication information, and allocates the second bit to the fourth indication information.
  • the network device determines that the first indication information occupies the third and fourth bits of the 6 reserved bits, and determines that the second indication information occupies the first of the 6 reserved bits. 5 bits and 6th bit.
  • the network device determines that the first indication information occupies the 3rd bit, 4th bit, 5th bit and 6th bit among the 6 reserved bits.
  • the fourth indication information indicates that there is no second indication information.
  • the DCI does not need to include the second indication information.
  • the network device may make the first indication information occupy the remaining 4 bits among the 6 reserved bits.
  • the first indication information occupies the remaining 4 bits of the 6 reserved bits, which does not mean that the first indication information needs to occupy all of the remaining 4 bits, and the network device can Determine the bits actually occupied by the first indication information according to the bits required to be occupied by the first indication information. For example, if the first indication information only occupies two bits, the network device can use the third bit of the 6 reserved bits and the fourth bit to carry the first indication information. The network device continues to use the remaining two bits as reserved bits, or the network device uses the remaining two bits to carry other information.
  • the network device determines that the third indication information occupies the third bit, the fourth bit, the fifth bit, and the sixth bit among the six reserved bits.
  • the third indication information indicates that the first indication information does not exist.
  • the DCI does not need to include the first indication information.
  • the network device may make the second indication information occupy the remaining 4 bits among the 6 reserved bits.
  • the second indication information occupies the remaining 4 bits of the 6 reserved bits, which does not mean that the second indication information needs to occupy all of the remaining 4 bits.
  • the network device can Determine the bits actually occupied by the second indication information according to the bits required to be occupied by the second indication information. For example, if the second indication information only occupies two bits, the network device can use the third bit of the 6 reserved bits and the fourth bit to carry the second indication information. The network device continues to use the remaining two bits as reserved bits, or the network device uses the remaining two bits to carry other information.
  • the network device determines that the 3rd bit, 4th bit, 5th bit and 6th bit among the 6 reserved bits are not occupied by any indication information.
  • the third indication information indicates that the first indication information does not exist
  • the fourth indication information indicates that the second indication information does not exist.
  • the DCI does not need to include the first indication information and the second indication information. Therefore, the network device determines that the 3rd bit, 4th bit, 5th bit and 6th bit among the 6 reserved bits are not occupied by any indication information. The network device may continue to use the remaining 4 bits as reserved bits, or the network device may use the remaining 4 bits to carry other information.
  • each indication information is merely examples. In actual implementation, each indication information may also occupy other bits, and the specific bits occupied are not limited by this application.
  • the DCI sent by the network device on the PDCCH monitoring opportunity may also include a short message indicator (Short Message Indicator).
  • the short message indication can be used to indicate whether the DCI schedules the paging function.
  • the terminal does not need to further receive the PDSCH scheduled by the PDCCH to which the DCI belongs. Therefore, when the short message indicates that the DCI does not schedule the paging function, the DCI may not include the second indication information and/or the fourth indication information; or the DCI may include the second indication information and/or the fourth indication Information, but the terminal does not parse the second indication information and/or the fourth indication information included in the DCI.
  • each network element for example, a network device and a terminal device, includes at least one of a hardware structure and a software module corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application may divide the network device and the terminal device into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 5 shows a possible structural diagram of the communication device (denoted as the communication device 120) involved in the above-mentioned embodiment.
  • the communication device 120 includes a processing unit 1201 and a communication unit 1202. , May also include a storage unit 1203.
  • the schematic structural diagram shown in FIG. 5 may be used to illustrate the structures of the network equipment and the terminal equipment involved in the foregoing embodiment.
  • the processing unit 1201 is used to control and manage the actions of the terminal device, for example, to control the terminal device to execute S101 and S101 in FIG. 2 S102, S101, S102, S103, and S105 in FIG. 3, and/or actions performed by the terminal device in other processes described in the embodiments of the present application.
  • the processing unit 1201 may communicate with other network entities through the communication unit 1202, for example, communicate with the network device shown in FIG. 2.
  • the storage unit 1203 is used to store the program code and data of the terminal device.
  • the communication device 120 may be a terminal device or a chip in the terminal device.
  • the processing unit 1201 is used to control and manage the actions of the network device, for example, to control the network device to execute S101 and S101 in FIG. 2 S102, S101, S102, S103, S104, and S105 in FIG. 3, and/or actions performed by the terminal device in other processes described in the embodiments of the present application.
  • the processing unit 1201 may communicate with other network entities through the communication unit 1202, for example, communicate with the network device shown in FIG. 2.
  • the storage unit 1203 is used to store the program code and data of the terminal device.
  • the communication device 120 may be a network device or a chip in the network device.
  • the processing unit 1201 may be a processor or a controller, and the communication unit 1202 may be a communication interface, a transceiver, a transceiver, a transceiver circuit, a transceiver, and so on.
  • the communication interface is a general term and may include one or more interfaces.
  • the storage unit 1203 may be a memory.
  • the processing unit 1201 may be a processor or a controller, and the communication unit 1202 may be an input interface and/or output interface, a pin or a circuit, etc.
  • the storage unit 1203 may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit located outside the chip in a terminal device or a network device (for example, read-only memory (ROM for short)). ), random access memory (random access memory, RAM for short), etc.).
  • ROM read-only memory
  • RAM random access memory
  • the communication unit may also be referred to as a transceiver unit.
  • the antenna and control circuit with the transceiver function in the communication device 120 can be regarded as the communication unit 1202 of the communication device 120, and the processor with the processing function can be regarded as the processing unit 1201 of the communication device 120.
  • the device for implementing the receiving function in the communication unit 1202 may be regarded as a receiving unit, which is used to perform the receiving steps in the embodiment of the present application, and the receiving unit may be a receiver, a receiver, a receiving circuit, and the like.
  • the device used for implementing the sending function in the communication unit 1202 can be regarded as a sending unit, the sending unit is used to perform the sending steps in the embodiment of the present application, and the sending unit can be a sender, a sender, a sending circuit, and the like.
  • the integrated unit in FIG. 5 is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solutions of the embodiments of the present application are essentially or the part that contributes to the prior art, or all or part of the technical solutions can be embodied in the form of software products, and the computer software products are stored in a storage
  • the medium includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • Storage media for storing computer software products include: U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.
  • the unit in FIG. 5 may also be referred to as a module, for example, the processing unit may be referred to as a processing module.
  • the embodiment of the present application also provides a schematic diagram of the hardware structure of a communication device (denoted as the communication device 130). See FIG. 6 or FIG. ⁇ Memory 1302.
  • the communication device 130 further includes a transceiver 1303.
  • the processor 1301, the memory 1302, and the transceiver 1303 are connected by a bus.
  • the transceiver 1303 is used to communicate with other devices or a communication network.
  • the transceiver 1303 may include a transmitter and a receiver.
  • the device used for implementing the receiving function in the transceiver 1303 can be regarded as a receiver, and the receiver is used to perform the receiving steps in the embodiment of the present application.
  • the device used in the transceiver 1303 to implement the sending function can be regarded as a transmitter, and the transmitter is used to perform the sending steps in the embodiment of the present application.
  • FIG. 6 may be used to illustrate the structure of the network device or terminal device involved in the foregoing embodiment.
  • the processor 1301 is used to control and manage the actions of the terminal device.
  • the processor 1301 is used to support the terminal device to execute the diagram. S101 and S102 in 2, S101, S102, S103, and S105 in FIG. 3, and/or actions performed by the terminal device in other processes described in the embodiments of the present application.
  • the processor 1301 may communicate with other network entities through the transceiver 1303, for example, communicate with the network device shown in FIG. 2.
  • the memory 1302 is used to store program codes and data of the terminal device.
  • the processor 1301 is used to control and manage the actions of the network device.
  • the processor 1301 is used to support the network device to execute the diagram. S101 and S102 in 2, S101, S102, S103, S104, and S105 in FIG. 3, and/or actions performed by network devices in other processes described in the embodiments of this application.
  • the processor 1301 may communicate with other network entities through the transceiver 1303, for example, communicate with the terminal device shown in FIG. 2.
  • the memory 1302 is used to store program codes and data of the network device.
  • the processor 1301 includes a logic circuit and at least one of an input interface and an output interface. Among them, the output interface is used to execute the sending action in the corresponding method, and the input interface is used to execute the receiving action in the corresponding method.
  • FIG. 7 The schematic structural diagram shown in FIG. 7 may be used to illustrate the structure of the network device or the terminal device involved in the foregoing embodiment.
  • the processor 1301 is used to control and manage the actions of the terminal device.
  • the processor 1301 is used to support the terminal device to control the terminal.
  • the device executes S101 and S102 in FIG. 2, S101, S102, S103, and S105 in FIG. 3, and/or actions performed by the terminal device in other processes described in the embodiments of the present application.
  • the processor 1301 may communicate with other network entities through at least one of the input interface and the output interface, for example, communicate with the network device shown in FIG. 2.
  • the memory 1302 is used to store program codes and data of the terminal device.
  • the processor 1301 is used to control and manage the actions of the network device.
  • the processor 1301 is used to support the network device to execute the diagram. S101 and S102 in 2, S101, S102, S103, S104, and S105 in FIG. 3, and/or actions performed by network devices in other processes described in the embodiments of this application.
  • the processor 1301 may communicate with other network entities through at least one of the input interface and the output interface, for example, communicate with the terminal device shown in FIG. 2.
  • the memory 1302 is used to store program codes and data of the network device.
  • FIG. 6 and FIG. 7 may also illustrate the system chip in the network device.
  • the actions performed by the above-mentioned network device can be implemented by the system chip, and the specific actions performed can be referred to the above, and will not be repeated here.
  • Figures 6 and 7 can also illustrate the system chip in the terminal device. In this case, the actions performed by the above-mentioned terminal device can be implemented by the system chip, and the specific actions performed can be referred to above, and will not be repeated here.
  • the embodiment of the present application also provides a schematic diagram of the hardware structure of a terminal device (denoted as a terminal device 150) and a network device (denoted as a network device 160). For details, refer to FIG. 8 and FIG. 9 respectively.
  • FIG. 8 is a schematic diagram of the hardware structure of the terminal device 150.
  • the terminal device 150 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute the software program, and process the data of the software program. For example, it is used to control the terminal device to execute S101 and S102 in Figure 2, Figure 3 S101, S102, S103, and S105 in S101, and/or actions performed by the terminal device in other processes described in the embodiments of the present application.
  • the memory is mainly used to store software programs and data.
  • the control circuit also referred to as a radio frequency circuit
  • the control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the control circuit in the control circuit.
  • the control circuit 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. send.
  • the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 8 only shows a memory and a processor. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processing unit is mainly used to control the entire terminal device and execute Software program, processing the data of the software program.
  • the processor in FIG. 8 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors and are interconnected by technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and the communication data can be built in the processor, or can be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • FIG. 9 is a schematic diagram of the hardware structure of the network device 160.
  • the network device 160 may include one or more radio frequency units, such as a remote radio unit (RRU for short) 1601 and one or more baseband units (BBU for short) (also known as digital units for short). DU)) 1602.
  • RRU remote radio unit
  • BBU baseband units
  • the RRU 1601 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 1611 and a radio frequency unit 1612.
  • the RRU1601 part is mainly used for the transceiver of radio frequency signals and the conversion of radio frequency signals and baseband signals.
  • the RRU 1601 and the BBU 1602 may be physically set together, or may be physically separated, for example, a distributed base station.
  • the BBU 1602 is the control center of the network equipment, and can also be called the processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and so on.
  • the BBU 1602 can be composed of one or more single boards, and multiple single boards can jointly support a single access standard radio access network (such as an LTE network), or can separately support different access standard radio access networks. Access network (such as LTE network, 5G network or other networks).
  • the BBU 1602 also includes a memory 1621 and a processor 1622, and the memory 1621 is used to store necessary instructions and data.
  • the processor 1622 is used to control the network device to perform necessary actions.
  • the memory 1621 and the processor 1622 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 network device 160 shown in FIG. 9 can perform S101 and S102 in FIG. 2, S101, S102, S103, S104, and S105 in FIG. 3, and/or other processes described in the embodiments of this application. Actions performed by network devices.
  • the operation, function, or operation and function of each module in the network device 160 are respectively set to implement the corresponding process in the foregoing method embodiment.
  • each step in the method provided in this embodiment can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the processor in this application may include but is not limited to at least one of the following: central processing unit (CPU), microprocessor, digital signal processor (DSP), microcontroller (microcontroller unit, MCU), or Various computing devices such as artificial intelligence processors that run software.
  • Each computing device may include one or more cores for executing software instructions for calculation or processing.
  • the processor can be a single semiconductor chip, or it can be integrated with other circuits to form a semiconductor chip. For example, it can form an SoC (on-chip) with other circuits (such as codec circuits, hardware acceleration circuits, or various bus and interface circuits). System), or it can be integrated into the ASIC as a built-in processor of an ASIC, and the ASIC integrated with the processor can be packaged separately or together with other circuits.
  • the processor may further include necessary hardware accelerators, such as field programmable gate array (FPGA) and PLD (programmable logic device) , Or a logic circuit that implements dedicated logic operations.
  • FPGA field programmable gate array
  • the memory in the embodiments of the present application may include at least one of the following types: read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory , RAM) or other types of dynamic storage devices that can store information and instructions, and may also be electrically erasable programmable read-only memory (EEPROM).
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • the memory can also be a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital universal discs, Blu-ray discs, etc.) , Disk storage media or other magnetic storage devices, or any other media that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but are not limited thereto.
  • CD-ROM compact disc read-only memory
  • optical disc storage including compact discs, laser discs, optical discs, digital universal discs, Blu-ray discs, etc.
  • Disk storage media or other magnetic storage devices or any other media that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but are not limited thereto.
  • the embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute any of the above-mentioned methods.
  • the embodiments of the present application also provide a computer program product containing instructions, which when run on a computer, cause the computer to execute any of the above-mentioned methods.
  • An embodiment of the present application also provides a communication system, including: the above-mentioned network equipment and terminal equipment.
  • the embodiment of the present application also provides a chip, the chip includes a processor and an interface circuit, the interface circuit is coupled to the processor, the processor is used to run a computer program or instructions to implement the above method, the interface circuit is used to communicate with Modules other than the chip communicate.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • Computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (digital subscriber line, referred to as DSL) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or may include one or more data storage devices such as a server or a data center that can be integrated with the medium.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Abstract

本申请提供一种通信方法及装置,涉及通信技术领域,用于降低终端的功耗。该方法包括:在属于同一个PO的PDCCH监测机会上,网络设备发送至少一个DCI,至少一个DCI中的全部或部分包括第一指示信息,每个第一指示信息用于指示至少一个CSI-RS可用,CSI-RS与SSB对应,SSB与用于发送第一指示信息所在的DCI的PDCCH监测机会对应;网络设备发送被第一指示信息指示为可用的CSI-RS。这样,处于空闲态或者非激活态的终端设备可以接收并测量可用的CSI-RS。由于终端设备进行CSI-RS测量时产生的功耗小于终端设备进行SSB测量时产生的功耗,因此,本申请提供的通信方法可以降低终端设备的功耗。

Description

通信方法及装置 技术领域
本申请涉及通信技术领域,尤其涉及一种通信方法及装置。
背景技术
终端设备在开机之后或者从连接态变成空闲态或非激活态之后,需要进行时频跟踪,和无线资源测量。具体的,终端设备可以通过测量同步信号块(synchronization signal block,SSB)达到时频跟踪,无线资源测量的目的。但是终端设备在测量SSB的过程中会出现功耗较高的问题。
发明内容
本申请提供一种通信方法及装置,用于降低终端设备的功耗。
为解决上述问题,本申请采用如下技术方案:
第一方面,本申请提供一种通信方法,该方法包括:在属于同一个寻呼机会(paging ocassion,PO)的物理下行控制信道(physical downlink control channel,PDCCH)监测机会上,网络设备发送至少一个下行控制信息(downlink control information,DCI),至少一个DCI中的全部或部分包括第一指示信息,每个第一指示信息用于指示至少一个信道状态信息参考信号(channel state information reference signal,CSI-RS)可用,至少一个CSI-RS与至少一个SSB对应,至少一个SSB与用于发送第一指示信息所在的DCI的PDCCH监测机会对应;网络设备发送被第一指示信息指示为可用的CSI-RS。
第一方面提供的方法,网络设备通过SSB对应的PDCCH监控机会上发送的DCI,指示与该SSB对应的CSI-RS可用,终端设备根据该DCI确定可用的CSI-RS。终端设备接收该可用的CSI-RS,使得终端设备可以进一步测量该CSI-RS,以达到时频跟踪,和无线资源测量的目的。由于终端设备进行CSI-RS测量时产生的功耗小于终端设备进行SSB测量时产生的功耗,因此,本申请提供的通信方法可以降低终端设备的功耗。
一种可能的实现方式中,在发送至少一个DCI之前,网络设备通过系统信息块(system information block,SIB)或高层信令为终端设备配置N个CSI-RS,N个CSI-RS包括被第一指示信息指示为可用的CSI-RS。这样,网络设备可以为处于空闲态或者非激活态的终端设备配置该N个CSI-RS。
一种可能的实现方式中,网络设备通过SIB或高层信令为终端设备配置N个CSI-RS与M个SSB之间的对应关系,M个SSB为网络设备实际发送的SSB。这样,网络设备可以为处于空闲态或者非激活态的终端设备配置该N个CSI-RS与M个SSB之间的对应关系。
一种可能的实现方式中,N个CSI-RS与M个SSB之间的对应关系与N个CSI-RS在用于配置N个CSI-RS的SIB或高层信令中的顺序相关;或者,N个CSI-RS与M个SSB之间的对应关系与N个CSI-RS的标识相关。这样,网络设备可以根据N个CSI-RS的SIB或高层信令中的顺序,或者N个CSI-RS的标识确定N个CSI-RS与M 个SSB之间的对应关系。
一种可能的实现方式中,至少一个CSI-RS与至少一个SSB具有空间位置关系。这样,网络设备指示与SSB具有空间位置关系的CSI-RS可用,可以使得终端设备接收并测量与SSB具有空间位置关系的CSI-RS,保证测量CSI-RS与测量SSB达到相同的测量目的。
一种可能的实现方式中,至少一个CSI-RS与至少一个SSB具有准共址(Quasi-collocation,QCL)-类型D关系;或者,至少一个CSI-RS与至少一个SSB的波束方向相同或相近。
一种可能的实现方式中,在属于同一个PO的PDCCH监测机会上接收DCI的终端设备被分为L个终端组,L为正整数;每个DCI中的第一比特位用于指示是否存在第一指示信息,第二比特位用于指示是否存在第二指示信息,第二指示信息用于指示接收该DCI调度的物理下行共享信道(physical downlink shared channel,PDSCH)的终端组;在第一比特位指示第一指示信息存在,第二比特位指示第二指示信息存在的情况下,第一指示信息占用第三比特位和第四比特位,第二指示信息占用第五比特位和第六比特位;在第一比特位指示第一指示信息存在,第二比特位指示第二指示信息不存在的情况下,第一指示信息占用第三比特位、第四比特位、第五比特位和第六比特位;在第一比特位指示第一指示信息不存在,第二比特位指示第二指示信息存在的情况下,第二指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。这样,网络设备通过灵活的设置第一指示信息第二指示信息在DCI中占用的比特位,可以提高DCI中比特位的利用率。
第二方面,本申请提供一种通信方法,该方法包括:在PO的PDCCH监测机会上,终端设备接收DCI,DCI包括第一指示信息,第一指示信息用于指示至少一个CSI-RS可用,至少一个CSI-RS与至少一个SSB对应,至少一个SSB与PDCCH监测机会对应;终端设备接收被第一指示信息指示为可用的CSI-RS。
基于上述技术方案,处于空闲态或非激活态的终端设备通过网络设备发送的DCI可以确定可用的CSI-RS。终端设备接收该被CSI-RS指示可用的CSI-RS。使得终端设备可以进一步测量该CSI-RS,以达到时频跟踪,和无线资源测量的目的。由于终端设备进行CSI-RS测量时产生的功耗小于终端设备进行SSB测量时产生的功耗,因此,本申请提供的通信方法可以降低终端设备的功耗。
一种可能的实现方式中,在接收DCI之前,终端设备接收网络设备用于配置N个CSI-RS的SIB或高层信令,N个CSI-RS包括被第一指示信息指示为可用的CSI-RS。这样,终端设备在处于空闲态或非激活态时,可以通过SIB或者高层信令,确定N个CSI-RS的信息。
一种可能的实现方式中,终端设备接收网络设备用于配置N个CSI-RS与M个SSB之间的对应关系的SIB或高层信令,M个SSB为网络设备实际发送的SSB。这样,终端设备在处于空闲态或非激活态时,可以通过SIB或者高层信令,确定N个CSI-RS与M个SSB之间的对应关系。
一种可能的实现方式中,N个CSI-RS与M个SSB之间的对应关系与N个CSI-RS在用于配置N个CSI-RS的SIB或高层信令中的顺序相关;或者,N个CSI-RS与M 个SSB之间的对应关系与N个CSI-RS的标识相关。
一种可能的实现方式中,至少一个CSI-RS与至少一个SSB具有空间位置关系。这样,终端设备接收并测量与SSB具有空间位置关系的CSI-RS,保证终端设备测量CSI-RS与测量SSB达到相同的测量目的。
一种可能的实现方式中,至少一个CSI-RS与至少一个SSB具有QCL-类型D关系;或者,至少一个CSI-RS与至少一个SSB的波束方向相同或相近。
一种可能的实现方式中,在属于同一个PO的PDCCH监测机会上接收DCI的终端设备被分为L个终端组,L为正整数;每个DCI中的第一比特位用于指示是否存在第一指示信息,第二比特位用于指示是否存在第二指示信息,第二指示信息用于指示接收该DCI调度的物理下行共享信道PDSCH的终端组;在第一比特位指示第一指示信息存在,第二比特位指示第二指示信息存在的情况下,第一指示信息占用第三比特位和第四比特位,第二指示信息占用第五比特位和第六比特位;在第一比特位指示第一指示信息存在,第二比特位指示第二指示信息不存在的情况下,第一指示信息占用第三比特位、第四比特位、第五比特位和第六比特位;在第一比特位指示第一指示信息不存在,第二比特位指示第二指示信息存在的情况下,第二指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。
第三方面,本申请提供一种网络设备,该网络设备包括:处理单元和通信单元,处理单元,用于通过通信单元在属于同一个PO的PDCCH监测机会上,发送至少一个DCI,至少一个DCI中的全部或部分包括第一指示信息,每个第一指示信息用于指示至少一个CSI-RS可用,至少一个CSI-RS与至少一个SSB对应,至少一个SSB与用于发送第一指示信息所在的DCI的PDCCH监测机会对应;处理单元,还用于通过通信单元发送被第一指示信息指示为可用的CSI-RS。
一种可能的实现方式中,处理单元,还用于采用通信单元,通过SIB或高层信令为终端设备配置N个CSI-RS,N个CSI-RS包括被第一指示信息指示为可用的CSI-RS。
一种可能的实现方式中,处理单元,还用于采用通信单元,通过SIB或高层信令为终端设备配置N个CSI-RS与M个SSB之间的对应关系,M个SSB为网络设备实际发送的SSB。
一种可能的实现方式中,N个CSI-RS与M个SSB之间的对应关系与N个CSI-RS在用于配置N个CSI-RS的SIB或高层信令中的顺序相关;或者,N个CSI-RS与M个SSB之间的对应关系与N个CSI-RS的标识相关。
一种可能的实现方式中,至少一个CSI-RS与至少一个SSB具有空间位置关系。
一种可能的实现方式中,至少一个CSI-RS与至少一个SSB具有QCL-类型D关系;或者,至少一个CSI-RS与至少一个SSB的波束方向相同或相近。
一种可能的实现方式中,在属于同一个PO的PDCCH监测机会上接收DCI的终端设备被分为L个终端组,L为正整数;每个DCI中的第一比特位用于指示是否存在第一指示信息,第二比特位用于指示是否存在第二指示信息,第二指示信息用于指示接收该DCI调度的物理下行共享信道PDSCH的终端组;在第一比特位指示第一指示信息存在,第二比特位指示第二指示信息存在的情况下,第一指示信息占用第三比特位和第四比特位,第二指示信息占用第五比特位和第六比特位;在第一比特位指示第 一指示信息存在,第二比特位指示第二指示信息不存在的情况下,第一指示信息占用第三比特位、第四比特位、第五比特位和第六比特位;在第一比特位指示第一指示信息不存在,第二比特位指示第二指示信息存在的情况下,第二指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。
第四方面,本申请提供一种终端设备,该终端设备包括:处理单元和通信单元,处理单元,用于通过通信单元在PO的PDCCH监测机会上,接收DCI,DCI包括第一指示信息,第一指示信息用于指示至少一个CSI-RS可用,至少一个CSI-RS与至少一个SSB对应,至少一个SSB与PDCCH监测机会对应;处理单元,还用于通过通信单元接收被第一指示信息指示为可用的CSI-RS。
一种可能的实现方式中,处理单元,还用于通过通信单元接收网络设备用于配置N个CSI-RS的SIB或高层信令,N个CSI-RS包括被第一指示信息指示为可用的CSI-RS。
一种可能的实现方式中,处理单元,还用于通过通信单元接收网络设备用于配置N个CSI-RS与M个SSB之间的对应关系的SIB或高层信令,M个SSB为网络设备实际发送的SSB。
一种可能的实现方式中,N个CSI-RS与M个SSB之间的对应关系与N个CSI-RS在用于配置N个CSI-RS的SIB或高层信令中的顺序相关;或者,N个CSI-RS与M个SSB之间的对应关系与N个CSI-RS的标识相关。
一种可能的实现方式中,至少一个CSI-RS与至少一个SSB具有空间位置关系。
一种可能的实现方式中,至少一个CSI-RS与至少一个SSB具有准共址QCL-类型D关系;或者,至少一个CSI-RS与至少一个SSB的波束方向相同或相近。
一种可能的实现方式中,在属于同一个PO的PDCCH监测机会上接收DCI的终端设备被分为L个终端组,L为正整数;每个DCI中的第一比特位用于指示是否存在第一指示信息,第二比特位用于指示是否存在第二指示信息,第二指示信息用于指示接收该DCI调度的物理下行共享信道PDSCH的终端组;在第一比特位指示第一指示信息存在,第二比特位指示第二指示信息存在的情况下,第一指示信息占用第三比特位和第四比特位,第二指示信息占用第五比特位和第六比特位;在第一比特位指示第一指示信息存在,第二比特位指示第二指示信息不存在的情况下,第一指示信息占用第三比特位、第四比特位、第五比特位和第六比特位;在第一比特位指示第一指示信息不存在,第二比特位指示第二指示信息存在的情况下,第二指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。
第五方面,本申请提供了一种通信装置,包括:处理器和存储介质;存储介质包括指令,处理器用于运行指令,以实现如第一方面和第一方面的任一种可能的实现方式中所描述的通信方法。通信装置可以是网络设备,也可以是网络设备中的芯片。
第六方面,本申请提供了一种通信装置,包括:处理器和存储介质;存储介质包括指令,处理器用于运行指令,以实现如第二方面和第二方面的任一种可能的实现方式中所描述的通信方法。通信装置可以是终端设备,也可以是终端设备中的芯片。
第七方面,本申请提供了一种计算机可读存储介质,计算机可读存储介质中存储有指令,当该指令在网络设备上运行时,使得网络设备执行如第一方面和第一方面的 任一种可能的实现方式中所描述的通信方法。
第八方面,本申请提供了一种计算机可读存储介质,计算机可读存储介质中存储有指令,当该指令在终端设备上运行时,使得终端设备执行如第二方面和第二方面的任一种可能的实现方式中所描述的通信方法。
第九方面,本申请提供一种包含指令的计算机程序产品,当该计算机程序产品在网络设备上运行时,使得网络设备执行如第一方面和第一方面的任一种可能的实现方式中所描述的通信方法。
第十方面,本申请提供一种包含指令的计算机程序产品,当该计算机程序产品在终端设备上运行时,使得终端设备执行如第二方面和第二方面的任一种可能的实现方式中所描述的通信方法。
第十一方面,本申请提供一种通信系统,包括网络设备,以及与网络设备通信的终端设备,网络设备用于执行如第一方面和第一方面的任一种可能的实现方式中所描述的通信方法,终端设备用于执行如第二方面和第二方面的任一种可能的实现方式中所描述的通信方法。
应当理解的是,本申请中对技术特征、技术方案、有益效果或类似语言的描述并不是暗示在任意的单个实施例中可以实现所有的特点和优点。相反,可以理解的是对于特征或有益效果的描述意味着在至少一个实施例中包括特定的技术特征、技术方案或有益效果。因此,本说明书中对于技术特征、技术方案或有益效果的描述并不一定是指相同的实施例。进而,还可以任何适当的方式组合本实施例中所描述的技术特征、技术方案和有益效果。本领域技术人员将会理解,无需特定实施例的一个或多个特定的技术特征、技术方案或有益效果即可实现实施例。在其他实施例中,还可在没有体现所有实施例的特定实施例中识别出额外的技术特征和有益效果。
附图说明
图1为本申请实施例提供的一种通信系统的系统架构图;
图2为本申请实施例提供的一种通信方法的流程示意图;
图3为本申请实施例提供的另一种通信方法的流程示意图;
图4为本申请实施例提供的一个PO内PDCCH监测机会与SSB的对应关系;
图5为本申请实施例提供的一种通信装置的结构示意图;
图6为本申请实施例提供的一种通信装置的硬件结构示意图;
图7为本申请实施例提供的另一种通信装置的硬件结构示意图;
图8为本申请实施例提供的一种终端设备的硬件结构示意图;
图9为本申请实施例提供的一种网络设备的硬件结构示意图。
具体实施方式
在本申请的描述中,除非另有说明,“/”表示“或”的意思,例如,A/B可以表示A或B。本文中的“和/或”仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。此外,“至少一个”是指一个或多个,“多个”是指两个或两个以上。“第一”、“第二”等字样并不对数量和执行次序进行限定,并且“第一”、“第二”等字样也并不限定一定不同。
需要说明的是,本申请中,“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言,使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
本申请可以应用于图1所示的通信系统100中,该通信系统100包括网络设备10和终端设备20。其中,网络设备10和终端设备20之间可以通过无线链路通信。
本申请实施例中的通信系统包括但不限于长期演进(long term evolution,LTE)系统、第五代(5th-generation,5G)系统、新空口(new radio,NR)系统,无线局域网(wireless local area networks,WLAN)系统以及未来演进系统或者多种通信融合系统。示例性的,本申请实施例提供的方法具体可应用于演进的全球陆地无线接入网络(evolved-universal terrestrial radio access network,E-UTRAN)和下一代无线接入网(next generation-radio access network,NG-RAN)系统。
本申请实施例中的网络设备为网络侧的一种用于发送信号,或者,接收信号,或者,发送信号和接收信号的实体。网络设备可以为部署在无线接入网(radio access network,RAN)中为终端设备提供无线通信功能的装置,例如可以为传输接收点(transmission reception point,TRP)、基站(例如,演进型基站(evolved NodeB,eNB或eNodeB)、下一代基站节点(next generation node base station,gNB)、下一代eNB(next generation eNB,ng-eNB)等)、各种形式的控制节点(例如,网络控制器、无线控制器(例如,云无线接入网络(cloud radio access network,CRAN)场景下的无线控制器))、路侧单元(road side unit,RSU)等。具体的,网络设备可以为各种形式的宏基站,微基站(也称为小站),中继站,接入点(access point,AP)等,也可以为基站的天线面板。所述控制节点可以连接多个基站,并为所述多个基站覆盖下的多个终端设备配置资源。在采用不同的无线接入技术(radio access technology,RAT)的系统中,具备基站功能的设备的名称可能会有所不同。例如,LTE系统中可以称为eNB或eNodeB,5G系统或NR系统中可以称为gNB,本申请对基站的具体名称不作限定。网络设备还可以是未来演进的公共陆地移动网络(public land mobile network,PLMN)中的网络设备等。
本申请实施例中的终端设备是用户侧的一种用于接收信号,或者,发送信号,或者,接收信号和发送信号的实体。终端设备用于向用户提供语音服务和数据连通性服务中的一种或多种。终端设备还可以称为用户设备(user equipment,UE)、终端、接入终端、用户单元、用户站、移动站、远方站、远程终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。终端设备可以是车联网(vehicle to everything,V2X)设备,例如,智能汽车(smart car或intelligent car)、数字汽车(digital car)、无人汽车(unmanned car或driverless car或pilotless car或automobile)、自动汽车(self-driving car或autonomous car)、纯电动汽车(pure EV或Battery EV)、混合动力汽车(hybrid electric vehicle,HEV)、增程式电动汽车(range extended EV,REEV)、插电式混合动力汽车(plug-in HEV,PHEV)、新能源汽车(new energy vehicle)等。终端设备也可以是设备到设备(device to device,D2D)设备,例如,电表、水表等。终端设备还可以是移动站(mobile station,MS)、用户单元(subscriber unit)、无人 机、物联网(internet of things,IoT)设备、WLAN中的站点(station,ST)、蜂窝电话(cellular phone)、智能电话(smart phone)、无绳电话、无线数据卡、平板型电脑、会话启动协议(session initiation protocol,SIP)电话、无线本地环路(wireless local loop,WLL)站、个人数字处理(personal digital assistant,PDA)设备、膝上型电脑(laptop computer)、机器类型通信(machine type communication,MTC)终端、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备(也可以称为穿戴式智能设备)。终端设备还可以为下一代通信系统中的终端设备,例如,5G系统中的终端设备或者未来演进的PLMN中的终端设备,NR系统中的终端设备等。
为了使得本申请更加的清楚,首先对本申请涉及到的部分概念做简单介绍。
1、空闲(idle)态
空闲态是指终端设备在小区中完成驻留,但是未进行随机接入过程时终端设备所处的状态。终端设备通常在开机之后,或者在RRC释放之后进入空闲态。
2、连接(connected)态
连接态是指终端设备完成随机接入过程之后,未进行RRC释放时所处的状态。终端设备在连接态可以与网络设备进行数据传输。
终端设备在处于空闲态时,在终端设备完成随机接入过程之后,终端设备的状态迁移至连接态。终端设备在处于连接态时,完成RRC释放之后,终端设备的状态迁移至空闲态。
3、非激活态
非激活态是处于连接态和空闲态之间的状态。
处于非激活态的终端设备,空口的用户面承载已被暂停(suspend),无线接入网(radio access network,RAN)-核心网(core network,CN)之间的用户面承载和控制面承载仍被维护。当终端设备发起呼叫或业务请求时,需要激活空口的用户面承载,并重用已有的RAN-CN之间的用户面承载和控制面承载。
4、CSI-RS
CSI-RS用于对波束质量进行评估。由于波束可以和CSI-RS资源对应。终端设备可以通过对CSI-RS资源进行测量和评估,确定CSI-RS资源的质量。终端设备将测量和评估得到的CSI-RS资源的质量上报给网络设备,网络设备就可以根据CSI-RS资源的质量,以及波束和CSI-RS资源的对应关系,确定波束的质量。
为了确定波束的质量,网络设备需要向终端设备发送测量配置信息,该测量配置信息主要包括资源配置信息和上报配置信息两部分。
资源配置信息是测量资源相关的信息,在协议里通过三级结构(资源配置resourceConfig-资源集resourceSet-资源resource)进行配置。网络设备可以为终端设备配置一个或多个资源配置,每个资源配置包括一个或多个资源集,每个资源集可以包括一个或多个资源。每个资源配置/资源集/资源中都包括一个自己的索引。此外,还包括一些其他参数,如资源的周期,资源对应的信号类型等。
5、非连续接收(discontinuous reception,DRX)模式
DRX模式是终端设备的接收信号的一种模式,目的是为了降低终端设备的功耗, 终端设备可以根据网络设备的配置决定是否采用DRX模式接收信号。当终端设备采用DRX模式接收信号时,在一个DRX周期内,终端设备在激活时间(active time)内可以接收CSI-RS,并进行信道状态信息(channel state information,CSI)测量,而在激活时间以外,终端设备将进入睡眠时间,在睡眠时间内,终端设备将不接收CSI-RS,也不进行CSI测量。
6、paging消息
paging消息也叫寻呼消息,用于触发终端设备建立RRC连接,或者通知终端设备系统信息更新等。paging消息的内容是通过物理下行共享信道(physical downlink shared channel,PDSCH)发送给终端设备的,而PDSCH是通过寻呼无线网络临时标识(paging radio network temporary identifier,P-RNTI)加扰的PDCCH调度的。
终端设备获取paging消息的过程为:处于空闲态或者非激活态的终端设备周期性的唤醒,在终端设备唤醒之后,监测通过P-RNTI加扰的PDCCH,解析PDCCH中的DCI确定PDSCH的位置(例如,时频位置)信息。终端设备根据PDSCH的位置信息接收PDSCH,终端设备获取PDSCH中的paging消息。终端设备确定paging消息pagingrecordList是否包括自身的终端设备标识。若是,则终端设备执行相应的操作(例如,建立RRC连接;或者,由非激活态退回空闲态等)。
7、PO
在本申请实施例中,PO是一个或者多个PDCCH monitoring occasions(PDCCH监控机会)的集合。一个PO包括一个或多个时隙。网络设备在PO包括的时隙中发送PDCCH。
处于空闲态或者非激活态的终端设备在每个DRX周期内监测一个PO内网络设备发送的PDCCH。
8、波束(beam)
波束是一种通信资源。波束可以是宽波束,或者窄波束,或者其他类型波束。形成波束的技术可以是波束赋形技术或者其他技术手段。波束赋形技术可以具体为数字波束赋形技术,模拟波束赋形技术,混合数字/模拟波束赋形技术。不同的波束可以认为是不同的资源。通过不同的波束可以发送相同的信息或者不同的信息。可选的,可以将具有相同或者类似的通信特征的多个波束视为是一个波束。一个波束内可以包括一个或多个天线端口,用于传输数据信道,控制信道和探测信号等,例如,发送波束可以是指信号经天线发送出去后在空间不同方向上形成的信号强度的分布,接收波束可以是指从天线上接收到的无线信号在空间不同方向上的信号强度分布。可以理解的是,形成一个波束的一个或多个天线端口也可以看作是一个天线端口集。
波束可以分为网络设备的发送波束和接收波束,与终端设备的发送波束和接收波束。网络设备的发送波束用于描述网络设备发送侧波束赋形信息,网络设备的接收波束用于描述网络设备接收侧波束赋形信息。终端设备的发送波束用于描述终端设备发送侧波束赋形信息,终端设备接收波束用于描述终端设备接收侧波束赋形信息。也即波束用于描述波束赋形信息。
波束可以对应时间资源、空间资源、频域资源中的一个或多个。
可选地,波束还可以与参考信号资源(例如,波束赋形的参考信号资源),或者 波束赋形信息对应。
可选地,波束还可以与网络设备的参考信号资源关联的信息对应,其中参考信号可以为CSI-RS,SSB,解调参考信号(demodulation reference signal,DMRS),相位跟踪信号(phase tracking reference signal,PTRS),追踪参考信号(tracking reference signal,TRS)等,参考信号资源关联的信息可以是参考信号资源标识,或者QCL信息(特别是type D类型的QCL)等。其中,参考信号资源标识对应了之前基于该参考信号资源测量时建立的一个收发波束对,通过该参考信号资源索引,终端设备可推断波束信息。
可选地,波束还可以与空域滤波器(spatial filter,spatial domain filter),空域传输滤波器(spatial domain transmission filter)对应。
9、QCL
QCL信息用于指示两种参考信号之间的QCL关系,其中目标参考信号一般可以是DMRS,CSI-RS等。源参考信号一般可以是CSI-RS、TRS、SSB等。应理解满足QCL关系的两个参考信号或信道的空间特性参数是相同的,从而基于该源参考信号资源索引可推断出目标参考信号的空间特性参数。其中,空间特性参数包括以下参数中的一种或多种:
入射角(angle of arrival,AoA)、主(Dominant)AoA、平均AoA、AoA的功率角度谱(power angular spectrum,PAS)、出射角(angle of departure,AoD)、主AoD、平均AoD、AoD的功率角度谱、终端设备发送波束成型、终端设备接收波束成型、空间信道相关性、基站发送波束成型、基站接收波束成型、平均信道增益、平均信道时延(average delay)、时延扩展(delay spread)、多普勒扩展(Doppler spread)、多普勒频移(Doppler shift)、空间接收参数(spatial Rx parameters)等。
这些空间特性参数描述了源参考信号与目标参考信号的天线端口间的空间信道特性,有助于终端设备根据该QCL信息完成接收侧波束赋形或接收侧处理过程。应理解,终端设备可以根据QCL信息指示的源参考信号的接收波束信息,接收目标参考信号。
其中,为了节省网络设备侧对终端设备侧的QCL信息指示开销,作为一种可选的实施方式,网络设备侧可以指示PDCCH或PDSCH的DMRS与终端设备之前上报的多个参考信号资源中的一个或多个是满足QCL关系的,如,该参考信号可以是CSI-RS。这里,每一个上报的CSI-RS资源索引对应了一个之前基于该CSI-RS资源测量时建立的一个收发波束对。应理解满足QCL关系的两个参考信号或信道的接收波束信息是相同的,从而基于该参考信号资源索引终端设备可推断出接收PDCCH或PDSCH的接收波束信息。
现有标准中定义了四种类型的QCL,网络设备可以同时给终端设备配置一个或多种类型的QCL,该4种类型的QCL,分别为:
“QCL-TypeA”(即QCL-类型A):{多普勒频移,多普勒扩展,平均时延,时延扩展}。
“QCL-TypeB”(即QCL-类型B):{多普勒频移,多普勒扩展}。
“QCL-TypeC”(即QCL-类型C):{多普勒频移,平均时延}。
“QCL-TypeD”(即QCL-类型D):{空域接收参数}。
其中,“QCL-TypeD”可以描述具有QCL关系的两个参考信号的波束类似,部分信道参数相似或相同。
10、SSB
SSB包含主同步信号(primary synchronization signal,PSS)、辅同步信号(secondary synchronization signal,SSS)和物理广播信道(physical broadcast bhannel,PBCH)中的至少一个。SSB可以用于时频跟踪,无线资源测量等。
在现有技术中,处于空闲态或者非激活态的终端设备需要测量SSB,以达到时频跟踪,无线资源测量的目的。但是,由于网络设备发送SSB在空间中分布较为稀疏,因此,终端设备可能需要多次测量SSB,才能完成SSB测量。这将导致处于空闲态或者非激活态的终端设备进行SSB测量时产生的功耗较高。
基于此,本申请提出了一种处于空闲态或者非激活态的终端设备通过测量CSI-RS,达到时频跟踪,无线资源测量的目的的方法。由于网络设备发送的CSI-RS在空间中分布的密集程度通常大于SSB在空间中分布的密集程度。这样,终端设备也就无需多次测量CSI-RS即可达到与测量SSB相同的目的(即时频跟踪,和无线资源测量),进而使得终端设备进行CSI-RS测量时产生的功耗小于终端设备进行SSB测量时产生的功耗。
需要指出的是,处于空闲态或者非激活态的终端设备进行SSB测量的功耗较高的原因是多方面的,除了上述所说的SSB数量少,在空间中分布较为稀疏的原因之外,还存在例如终端设备使用SSB进行波束测量时的周期较长等原因,本申请对此不再赘述。
为解决现有技术中处于空闲态或者非激活态的终端设备进行SSB测量时产生的功耗较高的问题,本申请提供了一种通信方法,网络设备可以通过PDCCH中的DCI向终端设备指示SSB对应的可用的CSI-RS。终端设备确定可用的CSI-RS之后,可以接收该可用的CSI-RS,并测量该CSI-RS,以达到时频跟踪,和无线资源测量的目的。由于终端设备进行CSI-RS测量时产生的功耗小于终端设备进行SSB测量时产生的功耗,因此,相比采用SSB进行时频跟踪,和无线资源测量而言,采用CSI-RS进行时频跟踪,和无线资源测量可以降低终端设备的功耗。
本申请实施例提供了一种通信方法,如图2所示,该方法包括:
S101、在属于同一个PO的PDCCH监测机会上,网络设备发送至少一个DCI。相应的,在PO的PDCCH监测机会上,终端设备接收DCI。该终端设备接收的DCI为网络设备发送的至少一个DCI中的DCI。
至少一个DCI中的全部或部分包括第一指示信息,每个第一指示信息用于指示至少一个CSI-RS可用,至少一个CSI-RS与至少一个SSB对应,至少一个SSB与用于发送第一指示信息所在的DCI的PDCCH监测机会对应。
其中,一个PDCCH监测机会上用于发送一个PDCCH,一个PDCCH中包括一个DCI。
一种实现方式中,该PO包括L个PDCCH监测机会。该L个PDCCH监测机会与M个SSB具有对应关系。例如,一个SSB可以对应一个或者多个PDCCH监测机会,一个PDCCH监测机会也可以对应一个或者多个SSB。该M个SSB为网络设备实际发 送的SSB。其中,L和M均为正整数。PDCCH监测机会与SSB对应也可以理解为PDCCH监测机会上发送的DCI与SSB对应。
在每个PDCCH监测机会上,网络设备发送对应的DCI。这样,网络设备在PDDCH监测机会上发送的DCI与SSB之间也存在对应关系。同样的,一个SSB可以对应一个或者多个DCI,一个DCI也可以对应一个或者多个SSB。
当一个SSB对应多个DCI时,该多个DCI均包括第一指示信息,或者该多个DCI中的部分DCI包括第一指示信息。
当一个DCI对应多个SSB时,该DCI中包括的第一指示信息,用于指示该多个SSB中的一个或多个SSB对应的CSI-RS是否可用。其中,一个CSI-RS可用是指网络设备发送的CSI-RS可以被终端设备接收和测量。
以SSB与PDCCH监测机会一一对应为例,若网络设备发送了4个SSB,分别为SSB#0,SSB#1,SSB#2,SSB#3,则一个PO内包括4个PDCCH监测机会。网络设备分别在每个监测机会上发送一个DCI。例如,在SSB#0对应的PDCCH监测机会上,网络设备发送DCI-1,在SSB#1对应的PDCCH监测机会上,网络设备发送DCI-2,在SSB#2对应的PDCCH监测机会上,网络设备发送DCI-3,在SSB#3对应的PDCCH监测机会上,网络设备发送DCI-4。
该情况下,DCI-1包括的第一指示信息用于指示与SSB#0对应的CSI-RS是否可用,DCI-2包括的第一指示信息用于指示与SSB#1对应的CSI-RS是否可用,DCI-3包括的第一指示信息用于指示与SSB#2对应的CSI-RS是否可用,DCI-4包括的第一指示信息用于指示与SSB#3对应的CSI-RS是否可用。
这样,网络设备只需在每个DCI中指示与该DCI存在对应关系的SSB对应的CSI-RS是否可用,而无需在每个DCI中指示所有的CSI-RS是否可用。从而节省了DCI的比特位开销。
S102、网络设备发送被第一指示信息指示为可用的CSI-RS。相应的,终端设备接收该CSI-RS。
一种可能的实现方式中,网络设备发送的被第一指示信息指示为可用的CSI-RS,可以是网络设备为其他正处于连接态的终端设备配置的CSI-RS。网络设备通过第一指示信息指示处于空闲态或非激活态的终端设备接收并测量该CSI-RS。这样,网络设备无需为处于空闲态或非激活态的终端设备重新配置CSI-RS。从而节省了网络设备的网络资源。
需要说明的是,在终端设备接收该被第一指示信息指示为可用的CSI-RS之后,终端设备测量该CSI-RS,以达到时频跟踪,无线资源测量的目的。
上述技术方案中,网络设备通过与SSB对应的PDCCH监控机会上发送的DCI,指示与该SSB对应的可用的CSI-RS,终端设备根据该DCI确定并接收可用的CSI-RS,进而测量该CSI-RS,以达到时频跟踪,无线资源测量的目的。由于终端设备进行CSI-RS测量时产生的功耗小于终端设备进行SSB测量时产生的功耗,因此,本申请提供的通信方法可以降低终端设备的功耗。
基于图2所示的技术方案,可选的,若网络设备发送的CSI-RS有N个(N为正整数),为了使得终端设备获取该N个CSI-RS的信息,如图3所示,在S101之前, 该方法还包括:
S103、网络设备通过SIB或高层信令为终端设备配置N个CSI-RS。相应的,终端设备接收网络设备用于配置N个CSI-RS的SIB或高层信令。
其中,N个CSI-RS包括被第一指示信息指示为可用的CSI-RS。
基于图2所示的技术方案,可选的,为了使得终端设备获取N个CSI-RS和M个SSB之间的对应关系,如图3所示,在S101之前,该方法还包括:
S104、网络设备确定N个CSI-RS与M个SSB之间的对应关系。
其中,M个SSB为网络设备实际发送的SSB。上述实施例中的任意一个PDCCH监控机会对应的SSB均属于该M个SSB。
其中,一个CSI-RS对应一个或多个SSB,一个SSB对应一个或者多个CSI-RS。
S105、网络设备通过SIB或高层信令为终端设备配置N个CSI-RS与M个SSB之间的对应关系。相应的,终端设备接收网络设备用于配置N个CSI-RS与M个SSB之间的对应关系的SIB或高层信令。
可选的,在S105中,N个CSI-RS与M个SSB之间的对应可以有以下两种情况:情况1:分组对应,情况2:空间位置关系对应。以下对情况1和情况2分别进行介绍。
情况1:分组对应
在情况1下,网络设备确定N个CSI-RS与M个SSB之间的对应关系的过程包括以下步骤Ⅰ至步骤Ⅲ:
Ⅰ、网络设备确定SSB的数量M,以及CSI-RS的数量N。
例如,网络设备确定实际发送的SSB的数量为4,则确定SSB的数量M=4。网络设备确定实际配置了8个CSI-RS,则确定CSI-RS的数量N=8。
Ⅱ、网络设备将N个CSI-RS,划分为M个CSI-RS组。
其中,该M个CSI-RS组与M个SSB一一对应。每个CSI-RS组中的CSI-RS的数量可以相同也可以不相同,本申请对此不做限定。
需要说明的是,对于上述N个CSI-RS中的一个CSI-RS,该CSI-RS可以分别属于一个或多个CSI-RS组。在该CSI-RS属于一个CSI-RS组的情况下,该CSI-RS对应一个SSB。在该CSI-RS属于多个CSI-RS组的情况下,该CSI-RS对应该多个SSB。
对于上述M个SSB中的任一个SSB,该SSB对应的CSI-RS组中可以包括一个或多个CSI-RS。在该SSB对应的CSI-RS组中包括一个CSI-RS的情况下,该SSB对应一个CSI-RS。在该SSB对应的CSI-RS组中包括多个CSI-RS的情况下,该SSB对应多个CSI-RS。
Ⅲ、网络设备确定M个SSB中,每个SSB对应的CSI-RS组。
需要指出的是,N个CSI-RS与M个SSB之间的对应关系与N个CSI-RS在用于配置N个CSI-RS的SIB或高层信令中的顺序相关;或者,N个CSI-RS与M个SSB之间的对应关系与N个CSI-RS的标识相关。
因此,在网络设备将N个CSI-RS,划分为M个CSI-RS组的过程中,网络设备可以根据N个CSI-RS在用于配置N个CSI-RS的SIB或高层信令中的顺序对该N个CSI-RS进行分组(记为分组方式a);或者,网络设备可以根据N个CSI-RS的标识对该N个CSI-RS进行分组(记为分组方式b)。以下对这两种分组方式分别进行说明。
分组方式a、网络设备根据CSI-RS的顺序对CSI-RS进行分组。
其中,CSI-RS的顺序可以包括:CSI-RS在信令中占用的比特位的顺序,CSI-RS在时域上的顺序,CSI-RS在频域上的顺序,或者网络设备配置CSI-RS的顺序中的任一个,本申请对此不做限定。
举例来说,网络设备实际配置了8个CSI-RS。该8个CSI-RS分别为:CSI-RS1,CSI-RS2,CSI-RS3,CSI-RS4,CSI-RS5,CSI-RS6,CSI-RS7,CSI-RS8。网络设备根据该8个CSI-RS在信令中占用的比特位的顺序,对该8个CSI-RS进行排序。在排序之后,网络设备按照从前至后的顺序对该8个CSI-RS进行两两分组。具体的,网络设备可以确定CSI-RS1和CSI-RS2组成CSI-RS组1,CSI-RS3和CSI-RS4组成CSI-RS组2,CSI-RS5和CSI-RS6组成CSI-RS组3,CSI-RS7和CSI-RS8组成CSI-RS组4。
分组方式b、网络设备根据CSI-RS的标识对CSI-RS进行分组。
其中,CSI-RS的标识可以是网络设备配置CSI-RS时,为各个CSI-RS配置的。
举例来说,网络设备实际配置了8个CSI-RS。该8个CSI-RS的标识分别为:标识1,标识2,标识3,标识4,标识5,标识6,标识7,标识8。网络设备根据该8个标识,对8个CSI-RS进行两两分组。例如,网络设备可以确定标识1和标识2对应的CSI-RS组成CSI-RS组1,标识3和标识4对应的CSI-RS组成CSI-RS组2,标识5和标识6对应的CSI-RS组成CSI-RS组3,标识7和标识8对应的CSI-RS组成CSI-RS组4。
需要说明的是,本申请实施例中网络设备还可以采用其他方式对CSI-RS进行分组,本申请对此不做限定。
需要指出的是,在网络设备对CSI-RS进行分组时,该CSI-RS可以是网络设备配置的CSI-RS,也可以是网络设备配置的CSI-RS集合。当CSI-RS为网络设备配置的CSI-RS集合时,网络设备对CSI-RS集合进行分组的方法与对CSI-RS进行分组的方法是类似的,不再赘述。
在采用上述分组方式a或分组方式b确定CSI-RS组之后,网络设备可以确定每个CSI-RS组对应的SSB。例如,网络设备实际发送了4个SSB,分别为SSB#0,SSB#1,SSB#2,SSB#3。则网络设备可以确定CSI-RS组1对应SSB#0,CSI-RS组2对应SSB#1,CSI-RS组3对应SSB#2,CSI-RS组4对应SSB#3。
情况2:空间位置关系对应
在本申请实施例中,至少一个CSI-RS与至少一个SSB具有空间位置关系。例如,至少一个CSI-RS与至少一个SSB具有QCL-TypeD关系;或者,至少一个CSI-RS与至少一个SSB的波束方向相同或相近。
对于上述具有QCL-TypeD关系的CSI-RS与SSB。由于“QCL-TypeD”可以描述具有QCL关系的两个参考信号的波束类似,部分信道参数相似或相同。因此,网络设备可以认为与SSB具有QCL-TypeD关系CSI-RS与该SSB对应。
对于上述波束方向相同或相近的SSB与CSI-RS,在网络设备发送SSB时,网络设备首先确定每个SSB的波束方向,网络设备根据各个SSB的波束方向发送SSB,从而使得网络设备发送的SSB可以覆盖尽可能大的区域。同样的,网络设备发送CSI-RS时,网络设备首先确定每个CSI-RS的波束方向。网络设备根据各个CSI-RS的波束方 向发送各个CSI-RS。
这样,网络设备可以根据SSB的波束方向,以及CSI-RS的波束方向,确定SSB与CSI-RS的对应关系。例如,网络设备确定与SSB波束方向相同,或者波束方向相似度大于预设值的CSI-RS作为与该SSB对应的CSI-RS。
一种可能的实现方式中,终端设备可以通过下述步骤1至步骤3,确定PDCCH监测机会与SSB之间的对应关系。以下对步骤1至步骤3进行具体说明。
1、网络设备和终端设备可以根据L个PDCCH监测机会中各个PDCCH监测机会在PO中对应的时域位置,确定各个PDCCH监测机会的编号。
PO内的各个PDCCH监测机会分别对应不同的时域位置,网络设备和终端设备可以根据PDCCH监测机会在PO中对应的时域位置的先后顺序,确定各个PDCCH监测机会的编号。
例如,网络设备和终端设备可以确定对应于PO中的第一个时域位置的PDCCH监测机会的编号为编号1,对应于PO中的第二个时域位置的PDCCH监测机会的编号为编号2,对应PO中的第三个时域位置的PDCCH监测机会的编号为编号3。
需要指出的是,PDCCH监测机会的编号仅是为了表示对不同的PDCCH监测机会进行区分。网络设备和终端设备也可以以其他的形式对不同的PDCCH监测机会进行区分。本申请对此不做限定。
2、网络设备和终端设备确定SSB的编号。
一种实现方式中,网络设备和终端设备确定SSB的编号为SSB的索引(index)。
示例性的,网络设备和终端设备确定的SSB的编号分别为:编号0,编号1,编号2。
3、网络设备和终端设备根据PDCCH监测机会的编号,与SSB的编号,确定SSB与PDCCH监测机会的对应关系。
一种示例,网络设备和终端设备将PDCCH监测机会的编号,与SSB的编号进行顺序对应,确定SSB与PDCCH监测机会的对应关系。
例如,编号1的PDCCH监测机会对应SSB#0(即编号0的SSB),编号2的PDCCH监测机会对应SSB#1(即编号1的SSB),编号3的PDCCH监测机会对应SSB#2(即编号2的SSB)。
在本申请实施例中,PDCCH监测机会与SSB之间的对应关系可以是:PDCCH监测机会与SSB之间一一对应;也可以是一个PDCCH监测机会对应多个SSB,一个SSB对应多个PDCCH监测机会。PDCCH监测机会与SSB之间的对应关系与网络设备为paging搜索空间配置的搜索空间标识,以及SSB与控制资源集合(control resource set,CORESET)0的映射关系的模式有关,以下分情况进行说明。
情况1、网络设备为paging搜索空间配置的搜索空间标识不为0。
在网络设备为paging搜索空间配置的搜索空间标识不为0的情况下,一个PO内,网络设备配置L个PDCCH,该L个PDCCH与M个SSB具有对应关系。M等于L。
该L个PDCCH监测机会中的第K个PDCCH监测机会,对应M个SSB中的第K个SSB。该M个SSB与该L个PDCCH监测机会一一对应。
示例性的,如图4所示,网络设备实际发送了三个SSB,分别为SSB#0,SSB#1, SSB#2。在该情况下,一个PO内包括3个PDCCH监测机会,分别记为PDCCH-1,PDCCH-2,以及PDCCH-3。也就是说,一个PO是3个PDCCH监测机会的集合。
其中,PDCCH-1对应于SSB#0,PDCCH-2对应于SSB#1,PDCCH-3对应于SSB#2。
情况2、网络设备为paging搜索空间配置的搜索空间标识为0,SSB与CORESET0的映射关系的模式为第一模式(也可以称为模式1)。
在网络设备为paging搜索空间配置的搜索空间标识为0,SSB与CORESET0的映射关系的模式为第一模式的情况下,一个SSB对应一个或多个paging搜索空间。当一个SSB对应多个paging搜索空间时,网络设备可能在该多个paging搜索空间中的每个paging搜索空间中配置PDCCH监测机会,网络设备在该多个paging搜索空间中配置的PDCCH监测机会可能是相同的也可能是不同的。此时,一个SSB可以对应一个或者多个PDCCH监测机会。
同样的,多个不同的SSB对应的paging搜索空间可能是重叠的(也即多个不同的SSB对应同一个paging搜索空间)。此时,该同一个paging搜索空间中的PDCCH监测机会对应该多个SSB。
因此,在paging搜索空间标识为0,SSB与CORESET0的映射关系的模式为第一模式的情况下,一个SSB可以对应一个或多个PDCCH监测机会,一个PDCCH监测机会可以对应一个或者多个SSB。SSB与PDCCH监测机会的对应关系,需要根据各个SSB对应的paging搜索空间的数量,网络设备在各个paging搜索空间中配置的PDCCH监测机会,以及paging搜索空间的重叠关系确定。
举例来说,在情况2中,网络设备实际发送了3个SSB,分别为SSB#0,SSB#1,SSB#2,每个SSB对应2个paging搜索空间。其中,SSB#0对应paging搜索空间1和paging搜索空间2;SSB#1对应paging搜索空间2和paging搜索空间3。SSB#2对应paging搜索空间3和paging搜索空间4。网络设备在paging搜索空间1中配置的PDCCH监测机会为PDCCH-1,网络设备在paging搜索空间2中配置的PDCCH监测机会也为PDCCH-1,网络设备在paging搜索空间3中配置的PDCCH监测机会为PDCCH-2,网络设备在paging搜索空间4中配置的PDCCH监测机会为PDCCH-3。
此时,网络设备确定SSB#0对应的PDCCH监测机会为PDCCH-1(即网络设备在paging搜索空间1和paging搜索空间2中配置的PDCCH监测机会),网络设备确定SSB#1对应的PDCCH监测机会为PDCCH-1和PDCCH-2(即网络设备在paging搜索空间2和paging搜索空间3中配置的PDCCH监测机会),SSB#2对应的PDCCH监测机会为PDCCH-2和PDCCH-3(即网络设备在paging搜索空间3和paging搜索空间4中配置的PDCCH监测机会)。
相应的,网络设备确定PDCCH-1对应的SSB为:SSB#0,SSB#1。网络设备确定PDCCH-2对应的SSB为:SSB#1,SSB#2。网络设备确定PDCCH-3对应的SSB为:SSB#2。
相应的,PDCCH-1中的第一指示信息用于指示与SSB#0,SSB#1对应的CSI-RS是否可用。PDCCH-2中的第一指示信息用于指示与SSB#1,SSB#2对应的CSI-RS是否可用。PDCCH-3中的第一指示信息用于指示与SSB#2对应的CSI-RS是否可用。
情况3、网络设备为paging搜索空间配置的搜索空间标识为0,SSB与CORESET0 的映射关系的模式不为第一模式。
在这种情况下,网络设备在一个PO内确定的SSB与PDCCH监测机会之间的对应关系与情况1中相同,此处不再赘述。
基于上述技术方案,在不同情况下,网络设备和终端设备均可以确定出PDCCH监测机会与SSB之间的对应关系,提高了本申请实施例的适用性。
可选的,在本申请实施例中,网络设备生成的DCI中除包括第一指示信息之外,还包括:第二指示信息,第三指示信息,第四指示信息中的至少一个。
其中,一个DCI中的第二指示信息用于指示接收该DCI调度的PDSCH的终端组。
一个DCI中的第三指示信息用于指示是否存在第一指示信息。
一个DCI中的第四指示信息用于指示是否存在第二指示信息。
需要说明的是,由于网络设备不能感知到处于空闲态或者非激活态的终端设备。因此网络设备会以广播的形式发送paging消息。一个PO内的所有终端设备都需要接收PDCCH中DCI,并获取DCI调度的PDSCH。网络设备从PDSCH中获取paging消息。paging消息中的pagingrecordList用于指示接收该paging消息的终端设备。针对该pagingrecordList中的标识指示的终端设备之外的终端设备,接收该PDSCH中的paging消息是不必要的,会导致终端设备的不必要的功耗。
因此,网络设备可以对一个PO内的终端设备进行分组,并在一个PO中的DCI中增加第二指示信息,采用第二指示信息指示接收该DCI调度的PDSCH的终端组,其他终端组的终端设备无需接收该PDSCH。从而可以降低其他终端组的终端设备的功耗。
网络设备可以通过DCI中保留的比特位承载这些指示信息。在DCI承载的指示信息不同的情况下,DCI承载指示信息的比特位不同,以下分别进行说明。
Ⅰ、DCI仅承载第一指示信息。
当DCI仅承载第一指示信息时,该第一指示信息可以占用DCI中的一个或多个比特位。该一个或多个比特位可以是DCI中保留的比特位中全部比特位或者部分比特位。
在一种可能的实现方式中,该一个或多个比特位可以是固定的比特位。例如,在DCI中包括6个保留的比特位时,该一个或多个比特位可以为该6个保留的比特位中的前3个比特位,另外3个比特位仍然为保留比特位。
在另一种可能的实现方式中,该一个或多个比特位也可以是网络设备根据第一指示信息指示的CSI-RS的数量的多少确定的比特位。例如,在DCI中包括6个保留的比特位时,网络设备确定第一指示信息指示了2个CSI-RS,则网络设备确定第一指示信息占用该6个保留的比特位中的前2个比特位,另外4个比特位仍然为保留比特位。网络设备确定第一指示信息指示了4个CSI-RS,则网络设备确定第一指示信息占用该6个保留的比特位中的前4个比特位,另外2个比特位仍然为保留比特位。当第一指示信息指示的CSI-RS的数量大于等于6个时,网络设备确定第一指示信息占用该全部6个保留的比特位。
Ⅱ、DCI承载第一指示信息和第三指示信息。
在这种情况下,第三指示信息指示存在第一指示信息。
其中,第一指示信息在该DCI中占用一个或多个比特位,第三指示信息在该DCI 中占用一个或多个比特位。第一指示信息和第三指示信息分别占用不同的比特位。
需要指出的是,上述第一指示信息和第三指示信息占用的比特位可以是DCI中的固定比特位。例如,在DCI中包括6个保留的比特位时,网络设备确定第三指示信息占用该6个保留的比特位中的第1个比特位,第一指示信息占用该6个比特位中的第2个至第4个比特位。
上述第一指示信息占用的比特位也可以是网络设备根据第一指示信息指示的CSI-RS的数量的多少确定的比特位。具体可参见上述第Ⅰ种情况中的第一指示信息占用的比特位进行理解,不再赘述。
Ⅲ、DCI仅承载第三指示信息。
在这种情况下,第三指示信息指示不存在第一指示信息。
该情况下,第三指示信息可以占用DCI中的一个或多个比特位。该一个或多个比特位可以是DCI中保留的比特位中的全部比特位或者部分比特位。
需要说明的是,在这种情况下,网络设备可以不生成第一指示信息,DCI也就无需承载第一指示信息。DCI仅承载第三指示信息,用于通知终端设备不存在第一指示信息。此时终端设备可以直接采用现有技术中的测量SSB的方法,进行时频跟踪,无线资源测量的目的等。
Ⅳ、DCI仅承载第二指示信息。
也就是说,网络设备仅通过该DCI指示接收该DCI所属的PDCCH调度的PDSCH的终端组。
当DCI仅承载第二指示信息时,该第二指示信息可以占用DCI中的一个或多个比特位。该一个或多个比特位可以是DCI中保留的比特位中的全部比特位或者部分比特位。
需要说明的是,在DCI仅承载第二指示信息的情况下,第二指示信息占用的一个或多个比特位,与DCI仅承载第一指示信息的情况下,第一指示信息占用的一个或多个比特位类似。第二指示信息占用的一个或多个比特位在DCI中的对应的实际的比特位,可以参照前述第Ⅰ种情况中的第一指示信息占用的比特位的描述,此处不在赘述。
Ⅴ、DCI承载第二指示信息和第四指示信息。
在这种情况下,第四指示信息指示存在第二指示信息。
需要说明的是,DCI承载第二指示信息和第四指示信息的情况,与DCI承载第一指示信息和第三指示信息的情况类似。具体可以参照前述DCI承载第一指示信息和第三指示信息时的描述,此处不再赘述。
Ⅵ、DCI承载第四指示信息。
在这种情况下,第四指示信息指示不存在第二指示信息。
需要说明的是,DCI承载第四指示信息的情况,与DCI承载第三指示信息的情况类似。具体可以参照前述DCI承载第三指示信息时的描述,此处不再赘述。
Ⅶ、DCI承载第一指示信息和第二指示信息。
第一指示信息和第二指示信息分别占用DCI中的一个或多个比特位。
在一种可能的实现方式中,第一指示信息和第二指示信息占用的比特位可以是网络设备确定的DCI中的固定比特位。例如,在DCI中包括6个保留的比特位时,第一 指示信息占用该6个保留的比特位中的前3个比特位。第二指示信息占用该6个保留的比特位中的后3个比特位。
在另一种可能的实现方式中,第一指示信息和第二指示信息占用的比特位可以是网络设备根据第一指示消息和第三指示消息分别所需占用的比特位,为其在DCI中分配的比特位。例如,在DCI中包括6个保留的比特位时,若第一指示信息需要占用3个比特位,第二指示信息需要占用2个比特位时。网络设备确定第一指示信息占用该6个保留的比特位中的前3个比特位,第二指示信息占用该6个保留的比特位中的第4个比特位和第5个比特位。
Ⅷ、该DCI至少承载第三指示信息和第四指示信息。
此时,网络设备可以分别采用如下方式1和方式2,确定各个指示信息占用的比特位。
方式1、
各个指示信息占用固定的比特位。
例如,在第三指示信息指示存在第一指示信息,第四指示信息指示存在第二指示信息的情况下,DCI还承载第一指示信息和第二指示信息。在DCI中包括6个保留的比特位时,第三指示信息占用该6个保留比特位中的第一比特位,第四指示信息占用该6个保留比特位中的第二比特位,第一指示信息占用该6个保留比特位中的第三比特位和第四比特位。第二指示信息占用该6个保留比特位中的第五比特位和第六比特位。
方式2、
网络设备根据第三指示信息指示的第一指示信息是否存在,以及第四指示信息指示的第二指示信息是否存在,确定各个指示信息占用的比特位。下面分情况进行说明。
需要指出的是,在该方式2中,第三指示信息占用第一比特位,第四指示信息占用第二比特位。
情况1、第三指示信息指示存在第一指示信息,第四指示信息指示存在第二指示信息。
该情况下,DCI还承载第一指示信息和第二指示信息。第一指示信息占用第三比特位和第四比特位,第二指示信息占用第五比特位和第六比特位。
情况2、第三指示信息指示存在第一指示信息,第四指示信息指示不存在第二指示信息。
该情况下,DCI还承载第一指示信息。第一指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。
情况3、在第三指示信息指示不存在第一指示信息,第四指示信息指示存在第二指示信息。
该情况下,DCI还承载第二指示信息。第二指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。
情况4、第三指示信息指示不存在第一指示信息,第四指示信息指示不存在第二指示信息。
该情况下,DCI仅承载第三指示信息和第四指示信息。第三比特位、第四比特位、 第五比特位和第六比特位不被任何指示信息占用。
需要说明的是,上述第一比特位至第六比特位可以分别对应DCI中的6个保留的比特位中的第1个比特位至第6个比特位,第一比特位至第六比特位与DCI中的6个保留的比特位也可以具有其他的对应关系,本申请不作限制。
下面以DCI中包括6个保留的比特位为例,对上述情况1至情况4分别进行举例说明。
其中,网络设备将该6个保留的比特位中的第1个比特位分配给第三指示信息,第2个比特位分配给第四指示信息。
针对上述情况1、网络设备确定第一指示信息占用该6个保留的比特位中的第3个比特位以及第4个比特位,确定第二指示信息占用该6个保留的比特位中的第5个比特位以及第6个比特位。
针对上述情况2、网络设备确定第一指示信息占用该6个保留的比特位中的第3个比特位,第4个比特位,第5个比特位以及第6个比特位。
需要说明的是,针对上述情况2,第四指示信息指示不存在第二指示信息。在这种情况下,DCI中无需包括第二指示信息。此时,网络设备可以使第一指示信息占用该6个保留的比特位中剩余的4个比特位。
需要指出的是,第一指示信息占用该6个保留的比特位中剩余的4个比特位,并不意味这第一指示信息需要占用该剩余4个比特位中的全部比特位,网络设备可以根据第一指示信息所需占用的比特位,确定第一指示信息实际占用的比特位。例如,第一指示信息只需占用两个比特位,则网络设备可以使用该6个保留的比特位中的第3个比特位,以及第4个比特位承载该第一指示信息。网络设备将剩余的两个比特位继续作为保留的比特位,或者网络设备使用剩余的两个比特位承载其他信息。
针对上述情况3、网络设备确定第三指示信息占用该6个保留的比特位中的第3个比特位,第4个比特位,第5个比特位以及第6个比特位。
需要说明的是,针对上述情况3,第三指示信息指示不存在第一指示信息。在这种情况下,DCI中无需包括第一指示信息。此时,网络设备可以使第二指示信息占用该6个保留的比特位中剩余的4个比特位。
需要指出的是,第二指示信息占用该6个保留的比特位中剩余的4个比特位,并不意味着第二指示信息需要占用该剩余4个比特位中的全部比特位,网络设备可以根据第二指示信息所需占用的比特位,确定第二指示信息实际占用的比特位。例如,第二指示信息只需占用两个比特位,则网络设备可以使用该6个保留的比特位中的第3个比特位,以及第4个比特位承载该第二指示信息。网络设备将剩余的两个比特位继续作为保留的比特位,或者网络设备使用剩余的两个比特位承载其他信息。
针对上述情况4、网络设备确定该6个保留的比特位中的第3个比特位,第4个比特位,第5个比特位以及第6个比特位不被任何指示信息占用。
需要说明的是,针对上述情况4,第三指示信息指示不存在第一指示信息,第四指示信息指示不存在第二指示信息。在这种情况下,DCI中无需包括第一指示信息,以及第二指示信息。因此,网络设备确定该6个保留的比特位中的第3个比特位,第4个比特位,第5个比特位以及第6个比特位不被任何指示信息占用。网络设备可以 将剩余的4个比特位继续作为保留的比特位,或者,网络设备使用剩余的4个比特位承载其他信息。
需要说明的是,在上述实施例中,各个指示信息占用的比特位仅仅为举例,在实际实现时,各个指示信息也可以占用其他的比特位,具体占用哪些比特位本申请不作限制。
需要指出的是,网络设备在PDCCH监测机会上发送的DCI中还可以包括短消息指示(Short Message Indicator)。该短消息指示可以用于指示该DCI是否调度寻呼功能。在该短消息指示指示DCI不调度寻呼功能的情况下,终端无需进一步接收该DCI所属的PDCCH调度的PDSCH。因此,在短消息指示指示DCI不调度寻呼功能的情况下,该DCI中可以不包括第二指示信息和/或第四指示信息;或者该DCI中包括第二指示信息和/或第四指示信息,但终端不解析该DCI中包括的第二指示信息和/或第四指示信息。
本申请上述实施例中的各个方案在不矛盾的前提下,均可以进行结合。
上述主要从各个网元之间交互的角度对本申请实施例的方案进行了介绍。可以理解的是,各个网元,例如,网络设备和终端设备为了实现上述功能,其包含了执行各个功能相应的硬件结构和软件模块中的至少一个。本领域技术人员应该很容易意识到,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,本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,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。
本申请实施例可以根据上述方法示例对网络设备和终端设备进行功能单元的划分,例如,可以对应各个功能划分各个功能单元,也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。需要说明的是,本申请实施例中对单元的划分是示意性的,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。
在采用集成的单元的情况下,图5示出了上述实施例中所涉及的通信装置(记为通信装置120)的一种可能的结构示意图,该通信装置120包括处理单元1201和通信单元1202,还可以包括存储单元1203。图5所示的结构示意图可以用于示意上述实施例中所涉及的网络设备和终端设备的结构。
当图5所示的结构示意图用于示意上述实施例中所涉及的终端设备的结构时,处理单元1201用于对终端设备的动作进行控制管理,例如,控制终端设备执行图2中的S101和S102,图3中的S101、S102、S103以及S105,和/或本申请实施例中所描述的其他过程中的终端设备执行的动作。处理单元1201可以通过通信单元1202与其他网络实体通信,例如,与图2中示出的网络设备通信。存储单元1203用于存储终端设备的程序代码和数据。
当图5所示的结构示意图用于示意上述实施例中所涉及的终端设备的结构时,通信装置120可以是终端设备,也可以是终端设备内的芯片。
当图5所示的结构示意图用于示意上述实施例中所涉及的网络设备的结构时,处 理单元1201用于对网络设备的动作进行控制管理,例如,控制网络设备执行图2中的S101和S102,图3中的S101、S102、S103、S104以及S105,和/或本申请实施例中所描述的其他过程中的终端设备执行的动作。处理单元1201可以通过通信单元1202与其他网络实体通信,例如,与图2中示出的网络设备通信。存储单元1203用于存储终端设备的程序代码和数据。
当图5所示的结构示意图用于示意上述实施例中所涉及的网络设备的结构时,通信装置120可以是网络设备,也可以是网络设备内的芯片。
其中,当通信装置120为终端设备或网络设备时,处理单元1201可以是处理器或控制器,通信单元1202可以是通信接口、收发器、收发机、收发电路、收发装置等。其中,通信接口是统称,可以包括一个或多个接口。存储单元1203可以是存储器。当通信装置120为终端设备或网络设备内的芯片时,处理单元1201可以是处理器或控制器,通信单元1202可以是输入接口和/或输出接口、管脚或电路等。存储单元1203可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是终端设备或网络设备内的位于该芯片外部的存储单元(例如,只读存储器(read-onlymemory,简称ROM)、随机存取存储器(random access memory,简称RAM)等)。
其中,通信单元也可以称为收发单元。通信装置120中的具有收发功能的天线和控制电路可以视为通信装置120的通信单元1202,具有处理功能的处理器可以视为通信装置120的处理单元1201。可选的,通信单元1202中用于实现接收功能的器件可以视为接收单元,接收单元用于执行本申请实施例中的接收的步骤,接收单元可以为接收机、接收器、接收电路等。通信单元1202中用于实现发送功能的器件可以视为发送单元,发送单元用于执行本申请实施例中的发送的步骤,发送单元可以为发送机、发送器、发送电路等。
图5中的集成的单元如果以软件功能模块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,本申请实施例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全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。存储计算机软件产品的存储介质包括:U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
图5中的单元也可以称为模块,例如,处理单元可以称为处理模块。
本申请实施例还提供了一种通信装置(记为通信装置130)的硬件结构示意图,参见图6或图7,该通信装置130包括处理器1301,可选的,还包括与处理器1301连接的存储器1302。
在第一种可能的实现方式中,参见图6,通信装置130还包括收发器1303。处理器1301、存储器1302和收发器1303通过总线相连接。收发器1303用于与其他设备或通信网络通信。可选的,收发器1303可以包括发射机和接收机。收发器1303中用于实现接收功能的器件可以视为接收机,接收机用于执行本申请实施例中的接收的步骤。收发器1303中用于实现发送功能的器件可以视为发射机,发射机用于执行本申请 实施例中的发送的步骤。
基于第一种可能的实现方式,图6所示的结构示意图可以用于示意上述实施例中所涉及的网络设备或终端设备的结构。
当图6所示的结构示意图用于示意上述实施例中所涉及的终端设备的结构时,处理器1301用于对终端设备的动作进行控制管理,例如,处理器1301用于支持终端设备执行图2中的S101和S102,图3中的S101、S102、S103以及S105,和/或本申请实施例中所描述的其他过程中的终端设备执行的动作。处理器1301可以通过收发器1303与其他网络实体通信,例如,与图2中示出的网络设备通信。存储器1302用于存储终端设备的程序代码和数据。
当图6所示的结构示意图用于示意上述实施例中所涉及的网络设备的结构时,处理器1301用于对网络设备的动作进行控制管理,例如,处理器1301用于支持网络设备执行图2中的S101和S102,图3中的S101、S102、S103、S104以及S105,和/或本申请实施例中所描述的其他过程中的网络设备执行的动作。处理器1301可以通过收发器1303与其他网络实体通信,例如,与图2中示出的终端设备通信。存储器1302用于存储网络设备的程序代码和数据。
在第二种可能的实现方式中,处理器1301包括逻辑电路以及输入接口和输出接口中的至少一个。其中,输出接口用于执行相应方法中的发送的动作,输入接口用于执行相应方法中的接收的动作。
基于第二种可能的实现方式,参见图7,图7所示的结构示意图可以用于示意上述实施例中所涉及的网络设备或终端设备的结构。
当图7所示的结构示意图用于示意上述实施例中所涉及的终端设备的结构时,处理器1301用于对终端设备的动作进行控制管理,例如,处理器1301用于支持终端设备控制终端设备执行图2中的S101和S102,图3中的S101、S102、S103以及S105,和/或本申请实施例中所描述的其他过程中的终端设备执行的动作。处理器1301可以通过输入接口和输出接口中的至少一个与其他网络实体通信,例如,与图2中示出的网络设备通信。存储器1302用于存储终端设备的程序代码和数据。
当图7所示的结构示意图用于示意上述实施例中所涉及的网络设备的结构时,处理器1301用于对网络设备的动作进行控制管理,例如,处理器1301用于支持网络设备执行图2中的S101和S102,图3中的S101、S102、S103、S104以及S105,和/或本申请实施例中所描述的其他过程中的网络设备执行的动作。处理器1301可以通过输入接口和输出接口中的至少一个与其他网络实体通信,例如,与图2中示出的终端设备通信。存储器1302用于存储网络设备的程序代码和数据。
其中,图6和图7也可以示意网络设备中的系统芯片。该情况下,上述网络设备执行的动作可以由该系统芯片实现,具体所执行的动作可参见上文,在此不再赘述。图6和图7也可以示意终端设备中的系统芯片。该情况下,上述终端设备执行的动作可以由该系统芯片实现,具体所执行的动作可参见上文,在此不再赘述。
另外,本申请实施例还提供了一种终端设备(记为终端设备150)和网络设备(记为网络设备160)的硬件结构示意图,具体可分别参见图8和图9。
图8为终端设备150的硬件结构示意图。为了便于说明,图8仅示出了终端设备 的主要部件。如图8所示,终端设备150包括处理器、存储器、控制电路、天线以及输入输出装置。
处理器主要用于对通信协议以及通信数据进行处理,以及对整个终端设备进行控制,执行软件程序,处理软件程序的数据,例如,用于控制终端设备执行图2中的S101和S102,图3中的S101、S102、S103以及S105,和/或本申请实施例中所描述的其他过程中的终端设备执行的动作。存储器主要用于存储软件程序和数据。控制电路(也可以称为射频电路)主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器,主要用于收发电磁波形式的射频信号。输入输出装置,例如触摸屏、显示屏,键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后,处理器可以读取存储器中的软件程序,解释并执行软件程序的指令,处理软件程序的数据。当需要通过天线发送数据时,处理器对待发送的数据进行基带处理后,输出基带信号至控制电路中的控制电路,控制电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时,控制电路通过天线接收到射频信号,将射频信号转换为基带信号,并将基带信号输出至处理器,处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解,为了便于说明,图8仅示出了一个存储器和处理器。在实际的终端设备中,可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等,本申请实施例对此不做限制。
作为一种可选的实现方式,处理器可以包括基带处理器和中央处理器,基带处理器主要用于对通信协议以及通信数据进行处理,中央处理器主要用于对整个终端设备进行控制,执行软件程序,处理软件程序的数据。图8中的处理器集成了基带处理器和中央处理器的功能,本领域技术人员可以理解,基带处理器和中央处理器也可以是各自独立的处理器,通过总线等技术互联。本领域技术人员可以理解,终端设备可以包括多个基带处理器以适应不同的网络制式,终端设备可以包括多个中央处理器以增强其处理能力,终端设备的各个部件可以通过各种总线连接。该基带处理器也可以表述为基带处理电路或者基带处理芯片。该中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中,也可以以软件程序的形式存储在存储器中,由处理器执行软件程序以实现基带处理功能。
图9为网络设备160的硬件结构示意图。网络设备160可包括一个或多个射频单元,如远端射频单元(remote radio unit,简称RRU)1601和一个或多个基带单元(basebandunit,简称BBU)(也可称为数字单元(digitalunit,简称DU))1602。
该RRU1601可以称为收发单元、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1611和射频单元1612。该RRU1601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。该RRU1601与BBU1602可以是物理上设置在一起,也可以物理上分离设置的,例如,分布式基站。
该BBU1602为网络设备的控制中心,也可以称为处理单元,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。
在一个实施例中,该BBU1602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网络),也可以分别支持不同接入制式的无线接入网(如LTE网,5G网或其它网)。该BBU1602还包括存储器1621和处理器1622,该存储器1621用于存储必要的指令和数据。该处理器1622用于控制网络设备进行必要的动作。该存储器1621和处理器1622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。
应理解,图9所示的网络设备160能够执行图2中的S101和S102,图3中的S101、S102、S103、S104以及S105,和/或本申请实施例中所描述的其他过程中的网络设备执行的动作。网络设备160中的各个模块的操作,功能,或者,操作和功能,分别设置为实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述,为避免重复,此处适当省略详述描述。
在实现过程中,本实施例提供的方法中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。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。
本申请中的处理器可以包括但不限于以下至少一种:中央处理单元(central processing unit,CPU)、微处理器、数字信号处理器(DSP)、微控制器(microcontroller unit,MCU)、或人工智能处理器等各类运行软件的计算设备,每种计算设备可包括一个或多个用于执行软件指令以进行运算或处理的核。该处理器可以是个单独的半导体芯片,也可以跟其他电路一起集成为一个半导体芯片,例如,可以跟其他电路(如编解码电路、硬件加速电路或各种总线和接口电路)构成一个SoC(片上系统),或者也可以作为一个ASIC的内置处理器集成在所述ASIC当中,该集成了处理器的ASIC可以单独封装或者也可以跟其他电路封装在一起。该处理器除了包括用于执行软件指令以进行运算或处理的核外,还可进一步包括必要的硬件加速器,如现场可编程门阵列(field programmable gate array,FPGA)、PLD(可编程逻辑器件)、或者实现专用逻辑运算的逻辑电路。
本申请实施例中的存储器,可以包括如下至少一种类型:只读存储器(read-only memory,ROM)或可存储静态信息和指令的其他类型的静态存储设备,随机存取存储器(random access memory,RAM)或者可存储信息和指令的其他类型的动态存储设备,也可以是电可擦可编程只读存储器(Electrically erasable programmabler-only memory,EEPROM)。在某些场景下,存储器还可以是只读光盘(compact disc read-only memory,CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此。
本申请实施例还提供了一种计算机可读存储介质,包括指令,当其在计算机上运行时,使得计算机执行上述任一方法。
本申请实施例还提供了一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述任一方法。
本申请实施例还提供了一种通信系统,包括:上述网络设备和终端设备。
本申请实施例还提供了一种芯片,该芯片包括处理器和接口电路,该接口电路和该处理器耦合,该处理器用于运行计算机程序或指令,以实现上述方法,该接口电路用于与该芯片之外的其它模块进行通信。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时,可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line,简称DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质(例如,软盘、硬盘、磁带),光介质(例如,DVD)、或者半导体介质(例如固态硬盘(solid state disk,简称SSD))等。
尽管在此结合各实施例对本申请进行了描述,然而,在实施所要求保护的本申请过程中,本领域技术人员通过查看附图、公开内容、以及所附权利要求书,可理解并实现公开实施例的其他变化。在权利要求中,“包括”(comprising)一词不排除其他组成部分或步骤,“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施,但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述,显而易见的,在不脱离本申请的精神和范围的情况下,可对其进行各种修改和组合。相应地,本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明,且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。

Claims (30)

  1. 一种通信方法,其特征在于,包括:
    在属于同一个寻呼机会PO的物理下行控制信道PDCCH监测机会上,发送至少一个下行控制信息DCI,所述至少一个DCI中的全部或部分包括第一指示信息,每个第一指示信息用于指示至少一个信道状态信息参考信号CSI-RS可用,所述至少一个CSI-RS与至少一个同步信号块SSB对应,所述至少一个SSB与用于发送所述第一指示信息所在的DCI的PDCCH监测机会对应;
    发送被所述第一指示信息指示为可用的CSI-RS。
  2. 根据权利要求1所述的通信方法,其特征在于,在所述发送至少一个DCI之前,所述方法还包括:
    通过系统信息块SIB或高层信令为终端设备配置N个CSI-RS,所述N个CSI-RS包括被所述第一指示信息指示为可用的CSI-RS。
  3. 根据权利要求2所述的通信方法,其特征在于,所述方法还包括:
    通过SIB或高层信令为所述终端设备配置所述N个CSI-RS与M个SSB之间的对应关系,所述M个SSB为网络设备实际发送的SSB。
  4. 根据权利要求3所述的通信方法,其特征在于,所述N个CSI-RS与所述M个SSB之间的对应关系与所述N个CSI-RS在用于配置所述N个CSI-RS的SIB或高层信令中的顺序相关;或者,
    所述N个CSI-RS与所述M个SSB之间的对应关系与所述N个CSI-RS的标识相关。
  5. 根据权利要求1至4任一项所述的通信方法,其特征在于,所述至少一个CSI-RS与所述至少一个SSB具有空间位置关系。
  6. 根据权利要求5所述的通信方法,其特征在于,所述至少一个CSI-RS与所述至少一个SSB具有准共址QCL-类型D关系;或者,
    所述至少一个CSI-RS与所述至少一个SSB的波束方向相同或相近。
  7. 根据权利要求1至6任一项所述的通信方法,其特征在于,在所述属于同一个PO的PDCCH监测机会上接收DCI的终端设备被分为L个终端组,L为正整数;
    每个DCI中的第一比特位用于指示是否存在所述第一指示信息,第二比特位用于指示是否存在第二指示信息,所述第二指示信息用于指示接收该DCI调度的物理下行共享信道PDSCH的终端组;
    在所述第一比特位指示所述第一指示信息存在,所述第二比特位指示所述第二指示信息存在的情况下,所述第一指示信息占用第三比特位和第四比特位,所述第二指示信息占用第五比特位和第六比特位;
    在所述第一比特位指示所述第一指示信息存在,所述第二比特位指示所述第二指示信息不存在的情况下,所述第一指示信息占用第三比特位、第四比特位、第五比特位和第六比特位;
    在所述第一比特位指示所述第一指示信息不存在,所述第二比特位指示所述第二指示信息存在的情况下,所述第二指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。
  8. 一种通信方法,其特征在于,包括:
    在寻呼机会PO的物理下行控制信道PDCCH监测机会上,接收下行控制信息DCI,所述DCI包括第一指示信息,所述第一指示信息用于指示至少一个信道状态信息参考信号CSI-RS可用,所述至少一个CSI-RS与至少一个同步信号块SSB对应,所述至少一个SSB与所述PDCCH监测机会对应;
    接收被所述第一指示信息指示为可用的CSI-RS。
  9. 根据权利要求8所述的通信方法,其特征在于,在所述接收DCI之前,所述方法还包括:
    接收网络设备用于配置N个CSI-RS的系统信息块SIB或高层信令,所述N个CSI-RS包括被所述第一指示信息指示为可用的CSI-RS。
  10. 根据权利要求9所述的通信方法,其特征在于,所述方法还包括:
    接收所述网络设备用于配置所述N个CSI-RS与M个SSB之间的对应关系的SIB或高层信令,所述M个SSB为所述网络设备实际发送的SSB。
  11. 根据权利要求10所述的通信方法,其特征在于,所述N个CSI-RS与所述M个SSB之间的对应关系与所述N个CSI-RS在用于配置所述N个CSI-RS的SIB或高层信令中的顺序相关;或者,
    所述N个CSI-RS与所述M个SSB之间的对应关系与所述N个CSI-RS的标识相关。
  12. 根据权利要求8至11任一项所述的通信方法,其特征在于,所述至少一个CSI-RS与所述至少一个SSB具有空间位置关系。
  13. 根据权利要求12所述的通信方法,其特征在于,所述至少一个CSI-RS与所述至少一个SSB具有准共址QCL-类型D关系;或者,
    所述至少一个CSI-RS与所述至少一个SSB的波束方向相同或相近。
  14. 根据权利要求8至13任一项所述的通信方法,其特征在于,在所述属于同一个PO的PDCCH监测机会上接收DCI的终端设备被分为L个终端组,L为正整数;
    每个DCI中的第一比特位用于指示是否存在所述第一指示信息,第二比特位用于指示是否存在第二指示信息,所述第二指示信息用于指示接收该DCI调度的物理下行共享信道PDSCH的终端组;
    在所述第一比特位指示所述第一指示信息存在,所述第二比特位指示所述第二指示信息存在的情况下,所述第一指示信息占用第三比特位和第四比特位,所述第二指示信息占用第五比特位和第六比特位;
    在所述第一比特位指示所述第一指示信息存在,所述第二比特位指示所述第二指示信息不存在的情况下,所述第一指示信息占用第三比特位、第四比特位、第五比特位和第六比特位;
    在所述第一比特位指示所述第一指示信息不存在,所述第二比特位指示所述第二指示信息存在的情况下,所述第二指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。
  15. 一种网络设备,其特征在于,包括:处理单元和通信单元;
    所述处理单元,用于通过所述通信单元在属于同一个寻呼机会PO的物理下行控 制信道PDCCH监测机会上,发送至少一个下行控制信息DCI,所述至少一个DCI中的全部或部分包括第一指示信息,每个第一指示信息用于指示至少一个信道状态信息参考信号CSI-RS可用,所述至少一个CSI-RS与至少一个同步信号块SSB对应,所述至少一个SSB与用于发送所述第一指示信息所在的DCI的PDCCH监测机会对应;
    所述处理单元,还用于通过所述通信单元发送被所述第一指示信息指示为可用的CSI-RS。
  16. 根据权利要求15所述的网络设备,其特征在于,所述处理单元,还用于通过所述通信单元通过系统信息块SIB或高层信令为终端设备配置N个CSI-RS,所述N个CSI-RS包括被所述第一指示信息指示为可用的CSI-RS。
  17. 根据权利要求16所述的网络设备,其特征在于,所述处理单元,还用于通过所述通信单元通过SIB或高层信令为所述终端设备配置所述N个CSI-RS与M个SSB之间的对应关系,所述M个SSB为网络设备实际发送的SSB。
  18. 根据权利要求17所述的网络设备,其特征在于,所述N个CSI-RS与所述M个SSB之间的对应关系与所述N个CSI-RS在用于配置所述N个CSI-RS的SIB或高层信令中的顺序相关;或者,
    所述N个CSI-RS与所述M个SSB之间的对应关系与所述N个CSI-RS的标识相关。
  19. 根据权利要求15至18任一项所述的网络设备,其特征在于,所述至少一个CSI-RS与所述至少一个SSB具有空间位置关系。
  20. 根据权利要求19所述的网络设备,其特征在于,所述至少一个CSI-RS与所述至少一个SSB具有准共址QCL-类型D关系;或者,
    所述至少一个CSI-RS与所述至少一个SSB的波束方向相同或相近。
  21. 根据权利要求15至20任一项所述的网络设备,其特征在于,在所述属于同一个PO的PDCCH监测机会上接收DCI的终端设备被分为L个终端组,L为正整数;
    每个DCI中的第一比特位用于指示是否存在所述第一指示信息,第二比特位用于指示是否存在第二指示信息,所述第二指示信息用于指示接收该DCI调度的物理下行共享信道PDSCH的终端组;
    在所述第一比特位指示所述第一指示信息存在,所述第二比特位指示所述第二指示信息存在的情况下,所述第一指示信息占用第三比特位和第四比特位,所述第二指示信息占用第五比特位和第六比特位;
    在所述第一比特位指示所述第一指示信息存在,所述第二比特位指示所述第二指示信息不存在的情况下,所述第一指示信息占用第三比特位、第四比特位、第五比特位和第六比特位;
    在所述第一比特位指示所述第一指示信息不存在,所述第二比特位指示所述第二指示信息存在的情况下,所述第二指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。
  22. 一种终端设备,其特征在于,包括:处理单元和通信单元;
    所述处理单元,用于通过所述通信单元在寻呼机会PO的物理下行控制信道PDCCH监测机会上,接收下行控制信息DCI,所述DCI包括第一指示信息,所述第 一指示信息用于指示至少一个信道状态信息参考信号CSI-RS可用,所述至少一个CSI-RS与至少一个同步信号块SSB对应,所述至少一个SSB与所述PDCCH监测机会对应;
    所述处理单元,还用于通过所述通信单元接收被所述第一指示信息指示为可用的CSI-RS。
  23. 根据权利要求22所述的终端设备,其特征在于,所述处理单元,还用于通过所述通信单元接收网络设备用于配置N个CSI-RS的系统信息块SIB或高层信令,所述N个CSI-RS包括被所述第一指示信息指示为可用的CSI-RS。
  24. 根据权利要求23所述的终端设备,其特征在于,所述处理单元,还用于通过所述通信单元接收所述网络设备用于配置所述N个CSI-RS与M个SSB之间的对应关系的SIB或高层信令,所述M个SSB为所述网络设备实际发送的SSB。
  25. 根据权利要求24所述的终端设备,其特征在于,所述N个CSI-RS与所述M个SSB之间的对应关系与所述N个CSI-RS在用于配置所述N个CSI-RS的SIB或高层信令中的顺序相关;或者,
    所述N个CSI-RS与所述M个SSB之间的对应关系与所述N个CSI-RS的标识相关。
  26. 根据权利要求22至25任一项所述的终端设备,其特征在于,所述至少一个CSI-RS与所述至少一个SSB具有空间位置关系。
  27. 根据权利要求26所述的终端设备,其特征在于,所述至少一个CSI-RS与所述至少一个SSB具有准共址QCL-类型D关系;或者,
    所述至少一个CSI-RS与所述至少一个SSB的波束方向相同或相近。
  28. 根据权利要求22至27任一项所述的终端设备,其特征在于,在所述属于同一个PO的PDCCH监测机会上接收DCI的终端设备被分为L个终端组,L为正整数;
    每个DCI中的第一比特位用于指示是否存在所述第一指示信息,第二比特位用于指示是否存在第二指示信息,所述第二指示信息用于指示接收该DCI调度的物理下行共享信道PDSCH的终端组;
    在所述第一比特位指示所述第一指示信息存在,所述第二比特位指示所述第二指示信息存在的情况下,所述第一指示信息占用第三比特位和第四比特位,所述第二指示信息占用第五比特位和第六比特位;
    在所述第一比特位指示所述第一指示信息存在,所述第二比特位指示所述第二指示信息不存在的情况下,所述第一指示信息占用第三比特位、第四比特位、第五比特位和第六比特位;
    在所述第一比特位指示所述第一指示信息不存在,所述第二比特位指示所述第二指示信息存在的情况下,所述第二指示信息占用第三比特位、第四比特位、第五比特位和第六比特位。
  29. 一种通信装置,其特征在于,所述装置包括处理器和存储介质,所述存储介质包括指令,所述指令被所述处理器运行时,使得所述装置执行如权利要求1至14任一项所述的方法。
  30. 一种计算机可读存储介质,所述计算机可读存储介质中存储有指令,其特征 在于,当所述指令在计算机上运行时,使得所述计算机执行如权利要求1至14任一项所述的方法。
PCT/CN2020/075764 2020-02-18 2020-02-18 通信方法及装置 WO2021163896A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/CN2020/075764 WO2021163896A1 (zh) 2020-02-18 2020-02-18 通信方法及装置
PCT/CN2020/087320 WO2021164127A1 (zh) 2020-02-18 2020-04-27 通信方法及装置
CN202080095700.7A CN115066861A (zh) 2020-02-18 2020-04-27 通信方法及装置
US17/890,528 US20220394526A1 (en) 2020-02-18 2022-08-18 Communication method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/075764 WO2021163896A1 (zh) 2020-02-18 2020-02-18 通信方法及装置

Publications (1)

Publication Number Publication Date
WO2021163896A1 true WO2021163896A1 (zh) 2021-08-26

Family

ID=77391844

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/CN2020/075764 WO2021163896A1 (zh) 2020-02-18 2020-02-18 通信方法及装置
PCT/CN2020/087320 WO2021164127A1 (zh) 2020-02-18 2020-04-27 通信方法及装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/087320 WO2021164127A1 (zh) 2020-02-18 2020-04-27 通信方法及装置

Country Status (3)

Country Link
US (1) US20220394526A1 (zh)
CN (1) CN115066861A (zh)
WO (2) WO2021163896A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11889464B2 (en) * 2020-07-21 2024-01-30 Qualcomm Incorporated Reliable paging and short message transmission with repetition
KR20220037677A (ko) * 2020-09-18 2022-03-25 삼성전자주식회사 무선 통신 시스템에서 유휴 모드 참조 신호를 송수신하는 방법 및 장치
EP4020823A1 (en) * 2020-12-22 2022-06-29 INTEL Corporation A distributed radiohead system
EP4020853A1 (en) * 2020-12-24 2022-06-29 INTEL Corporation A distributed radiohead system
US11864266B2 (en) * 2021-08-31 2024-01-02 Qualcomm Incorporated Methods and systems for avoiding collisions in a multi-subscriber identity module (MSIM) user equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109076556A (zh) * 2018-07-25 2018-12-21 北京小米移动软件有限公司 随机接入方法、装置、电子设备和计算机可读存储介质
EP3484057A1 (en) * 2017-11-09 2019-05-15 Comcast Cable Communications, LLC Csi transmission with multiple bandwidth parts
CN110299978A (zh) * 2018-03-23 2019-10-01 维沃移动通信有限公司 信息传输方法、终端及网络设备
CN110690947A (zh) * 2018-07-04 2020-01-14 维沃移动通信有限公司 信号处理方法和设备

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102478435B1 (ko) * 2018-02-14 2022-12-15 씨스코 시스템즈, 인코포레이티드 NR(New Radio) 시스템의 랜덤 엑세스(random access) 수행 방법 및 그 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3484057A1 (en) * 2017-11-09 2019-05-15 Comcast Cable Communications, LLC Csi transmission with multiple bandwidth parts
CN110299978A (zh) * 2018-03-23 2019-10-01 维沃移动通信有限公司 信息传输方法、终端及网络设备
CN110690947A (zh) * 2018-07-04 2020-01-14 维沃移动通信有限公司 信号处理方法和设备
CN109076556A (zh) * 2018-07-25 2018-12-21 北京小米移动软件有限公司 随机接入方法、装置、电子设备和计算机可读存储介质

Also Published As

Publication number Publication date
US20220394526A1 (en) 2022-12-08
WO2021164127A1 (zh) 2021-08-26
CN115066861A (zh) 2022-09-16

Similar Documents

Publication Publication Date Title
WO2021163896A1 (zh) 通信方法及装置
US20220352953A1 (en) Communication method and apparatus
WO2020164142A1 (zh) 同步信号块信息处理方法、装置及通信装置
CN116017566B (zh) 适用于多链路的单播业务指示方法及相关装置
WO2023125223A1 (zh) 下行传输的方法及装置
CN115066925A (zh) 终端定位方法及装置
CN115765950A (zh) 一种通信方法和通信装置
WO2021204113A1 (zh) 通信方法及装置
WO2017193276A1 (zh) 通信方法和通信装置
WO2021027739A1 (zh) 波束失败恢复方法及装置
WO2021114043A1 (zh) 设备到设备的通信方法和通信装置
WO2023274371A1 (zh) 接入小区的方法、通信装置及计算机存储介质
WO2020024299A1 (zh) 资源使用状况的上报方法及通信装置
WO2022022491A1 (zh) 通信方法及装置
WO2021239113A1 (zh) 数据传输方法及装置
WO2021239064A1 (zh) 通信方法及装置
WO2022077387A1 (zh) 一种通信方法及通信装置
CN114449687A (zh) 一种通信方法及装置
WO2024032227A1 (zh) 一种通信方法及装置
WO2021203842A1 (zh) 通信方法及设备
WO2023077961A1 (zh) 通信方法和装置
US20240056926A1 (en) Communication method and apparatus for obtaining load information
WO2022082538A1 (zh) 无线通信的方法和装置以及通信设备
WO2022089558A1 (zh) 模式切换方法及相关装置
WO2022267982A1 (zh) 一种通信方法以及相关装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20919446

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20919446

Country of ref document: EP

Kind code of ref document: A1