WO2019157939A1 - 参考信号发送和接收方法及装置 - Google Patents

参考信号发送和接收方法及装置 Download PDF

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Publication number
WO2019157939A1
WO2019157939A1 PCT/CN2019/073399 CN2019073399W WO2019157939A1 WO 2019157939 A1 WO2019157939 A1 WO 2019157939A1 CN 2019073399 W CN2019073399 W CN 2019073399W WO 2019157939 A1 WO2019157939 A1 WO 2019157939A1
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WIPO (PCT)
Prior art keywords
frequency domain
domain transmission
downlink frequency
csi
transmission resource
Prior art date
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PCT/CN2019/073399
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English (en)
French (fr)
Inventor
宋扬
孙鹏
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维沃移动通信有限公司
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to US16/969,928 priority Critical patent/US11483045B2/en
Publication of WO2019157939A1 publication Critical patent/WO2019157939A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a reference signal transmitting and receiving method and apparatus.
  • the fifth generation (5G) mobile communication system is on the horizon.
  • the 5G system supports partitioning in the frequency domain so that user equipment can receive and transmit signals on different frequency domain transmission resources.
  • a 5G system supports a maximum system bandwidth of 400 MHz, which is much larger than the system bandwidth of LTE up to 20 MHz, thus supporting greater system and user throughput.
  • the 5G system also supports dynamic and flexible bandwidth allocation, which can divide the system bandwidth into multiple bandwidth parts (BWP) to support narrow-band end users, or end users in energy-saving mode, so that it only needs to be in it. Part of the system works on bandwidth.
  • BWP bandwidth parts
  • Carrier Aggregation (CA) technology may be used to aggregate two or more Component Carriers (CCs) to support a larger transmission bandwidth.
  • Each component carrier CC corresponds to an independent cell Cell.
  • a cell operating on the primary frequency band is called a primary cell (PCell), and a cell operating on the secondary frequency band is called a secondary cell (SCell).
  • PCell primary cell
  • SCell secondary cell
  • different secondary cell SCells may be activated (or may be referred to as being turned on) as needed to provide additional wireless resources to meet communication needs.
  • a reference signal sending method which is applied to a network device, and the method includes:
  • a second aspect provides a reference signal receiving method, which is applied to a user equipment, where the method includes:
  • the first CSI resource configuration includes a periodic characteristic of a CSI reference signal.
  • a network device where the network device includes:
  • the operation indication sending module is configured to send a first indication on the second downlink frequency domain transmission resource, where the first indication is used to activate the first downlink frequency domain transmission resource;
  • a reference signal sending module configured to: when it is determined that there is a first channel state information CSI resource configuration corresponding to the first downlink frequency domain transmission resource, according to the first CSI resource configuration, in the first downlink And transmitting, by the frequency domain transmission resource, the CSI reference signal, where the first CSI resource configuration includes a periodic characteristic of the CSI reference signal.
  • a fourth aspect provides a user equipment, where the user equipment includes:
  • the operation indication receiving module is configured to receive a first indication on the second downlink frequency domain transmission resource, where the first indication is used to activate the first downlink frequency domain transmission resource;
  • a reference signal receiving module configured to: when it is determined that there is a first channel state information CSI resource configuration corresponding to the first downlink frequency domain transmission resource, according to the first CSI resource configuration, in the first downlink
  • the CSI reference signal is received on a frequency domain transmission resource; wherein the first CSI resource configuration includes a periodic characteristic of a CSI reference signal.
  • a network device comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being implemented by the processor, such as The steps of the method described in the first aspect.
  • a computer readable storage medium on which is stored a computer program that, when executed by a processor, implements the steps of the method as described in the first aspect.
  • a user equipment comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being implemented by the processor The steps of the method of the second aspect.
  • a computer readable storage medium on which is stored a computer program, the computer program being executed by a processor to implement the steps of the method as described in the second aspect.
  • the signal when a new frequency domain transmission resource is activated, the signal can be sent and received according to the configuration information corresponding to the new frequency domain transmission resource, thereby implementing uninterrupted wireless communication, for example, a network device.
  • the channel state information CSI reference signal is sent, if a new downlink frequency domain transmission resource is activated, for example, switching to a new bandwidth part BWP, or a new secondary cell is enabled, the reference signal provided by the embodiment of the present disclosure is used. And the receiving method enables uninterrupted transmission and reception of CSI reference signals to meet the communication requirements of the wireless communication system.
  • FIG. 1 is a schematic flowchart of a method for transmitting a reference signal performed by a network device according to an embodiment of the present disclosure
  • FIG. 2 is a timing diagram of a network device transmitting information in a method according to an embodiment of the present disclosure
  • FIG. 3 is a second timing diagram of a network device transmitting information in a method according to an embodiment of the present disclosure
  • FIG. 4 is a third timing diagram of a network device transmitting information in a method according to an embodiment of the present disclosure
  • FIG. 5 is a schematic flowchart of a method for transmitting a reference signal performed by a user equipment according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a network device provided by an implementation of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 8 is still another schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of still another network device according to an embodiment of the present disclosure.
  • the technical solution of the present disclosure can be applied to a plurality of communication systems having similar frequency domain transmission resources or spatial domain locations, such as a fifth generation (5-generation, 5G) New Radio (NR) mobile communication system, and connecting LTE eLTE (E-UTRA connect to 5GC) to the 5G core network 5GC.
  • 5G fifth generation
  • NR New Radio
  • LTE eLTE LTE eLTE
  • a user equipment which may also be called a mobile terminal (MT), a mobile user equipment, or the like, may be connected to one or more core networks via a radio access network (eg, RAN, Radio Access Network).
  • a radio access network eg, RAN, Radio Access Network
  • the user device can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle. They exchange language and/or data with the wireless access network.
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE and
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved base station
  • gNB 5G base station
  • the present disclosure is not limited, but for convenience of description, the following embodiments are described by taking gNB as an example.
  • the frequency domain can be divided.
  • the system bandwidth can be divided into multiple parts to form a plurality of bandwidth parts (BWP); the frequency band, carrier or component carrier of the system can also be divided to form multiple frequency domain transmission resources.
  • BWP bandwidth parts
  • a plurality of secondary cells (Secondary Cell, SCell) are formed.
  • the network device can configure the frequency domain transmission resource of the serving cell for the user equipment.
  • the user equipment may be configured with at least one Downlink Band Width Part (DL BWP) for downlink (Lown Link) reception through a high layer signaling, a Radio Resource Control (RRC) message, if A plurality of downlink bandwidth parts DL BWPs are configured to form a downlink bandwidth part set (DL BWP set).
  • DL BWP set Downlink Band Width Part
  • the network device can configure up to four downstream bandwidth portions DL BWP for the user equipment.
  • At least one Uplink Band Width Part (UL BWP) for uplink (UL Link) transmission may be configured for the user equipment by using the high layer signaling, the RRC message, if multiple uplinks are configured.
  • the bandwidth part UL BWP can form an uplink bandwidth part set (UL BWP set). It can be provided that the network device can configure up to four uplink bandwidth partial UL BWPs for the user equipment.
  • the network device may send downlink control on a physical downlink control channel (PDCCH) as needed.
  • Downlink Control Information DCI
  • the downlink bandwidth part DL BWP can be activated by the Bandwidth part indicator field in the downlink control information DCI.
  • the user equipment controls the physical downlink according to the subcarrier spacing and the length of the Cyclic Prefix (CP) of the numerology corresponding to the downlink bandwidth part DL BWP indicated by the downlink control information DCI.
  • the channel PDCCH and the Physical Downlink Shared Channel (PDSCH) receive information.
  • the network device may also indicate the activated uplink bandwidth portion UL BWP in the bandwidth part indicator field in the downlink DCI as needed.
  • the user equipment sends the physical uplink control channel (PUCCH) and the physical uplink shared channel (PUSCH) according to the subcarrier spacing and the CP length configured in the uplink bandwidth part of the UL BWP. information.
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • an embodiment of the present disclosure provides a reference signal sending method, which is applied to a network device, where the method is used to send a channel state information CSI reference signal, which may specifically include:
  • Step 101 Send a first indication on the second downlink frequency domain transmission resource, where the first indication is used to activate the first downlink frequency domain transmission resource.
  • the network device performs the first indication sent by step 101 to activate the first downlink frequency domain transmission resource.
  • the frequency domain transmission resource is the downlink bandwidth part DL BWP
  • the network device can switch the downlink bandwidth part DL BWP from the second downlink bandwidth part DL BWP (which can be recorded as DL BWPi) to the first downlink by sending the first indication.
  • the bandwidth part DL BWP (can be written as DL BWPj). It can be understood that after switching to the first downlink bandwidth part DL BWP, the network device stops sending information to the user equipment on the second downlink bandwidth part DL BWP.
  • the network device may activate the first downlink secondary cell DL SCell (which may be referred to as DL SCellj) by sending the first indication.
  • the network device can send information to the user equipment on the first downlink secondary cell DL SCellj, and at the same time, when transmitting the first indication.
  • the second downlink secondary cell DL SCell (which can be recorded as DL SCelli) or the downlink primary cell DL PCell can still continue to send information to the user equipment.
  • the network device may send the downlink control information DCI including the foregoing first indication, and activate the first downlink frequency domain transmission resource (specifically, the first downlink bandwidth section).
  • the network device may send a Medium Access Control-Control Element (MAC CE) including the foregoing first indication, and activate the first downlink.
  • MAC CE Medium Access Control-Control Element
  • the frequency domain transmission resource (specifically, the first downlink secondary cell).
  • Step 103 When it is determined that there is a first channel state information CSI resource configuration corresponding to the first downlink frequency domain transmission resource, send a CSI reference signal on the first downlink frequency domain transmission resource according to the first CSI resource configuration;
  • the first CSI resource configuration includes a periodic characteristic of the CSI reference signal.
  • the CSI resource configuration corresponding to the downlink frequency domain transmission resource may be configured by the network device by sending configuration information carrying a CSI resource setting.
  • the configuration information may be sent by using a radio resource control RRC message.
  • the configuration information may include a CSI resource configuration corresponding to at least one downlink frequency domain transmission resource, and may further include a CSI resource configuration corresponding to all downlink frequency domain transmission resources.
  • the network device can configure the CSI resource configuration independently for each downlink frequency domain transmission resource (equivalent to one downlink frequency domain transmission resource corresponding to one CSI resource configuration), or configure multiple corresponding ones in one CSI resource configuration.
  • Downstream frequency domain transmission resources such as all downlink frequency domain transmission resources.
  • the configuration information of the CSI resource configuration may include a periodic characteristic of a CSI reference signal (RS), which may include: periodic (P), semi-persistent (SP), and Aperiodic (AP).
  • RS CSI reference signal
  • the configuration information of the CSI resource configuration may include a CSI reference signal period configuration.
  • the parameter (which can be recorded as a CSI-RS-timeConfig parameter) is used to configure a periodic parameter of the CSI reference signal, and may specifically include a transmission period periodicity and a slot offset.
  • the configuration information of the CSI resource configuration may further include information such as the number of ports, a pattern, and the like of the CSI reference signal (which may be recorded as a CSI-RS).
  • the non-zero-power CSI-RS (which can be recorded as NZP CSI-RS) may be included in the periodic CSI reference signal P-CSI-RS and/or the semi-persistent CSI reference signal SP-CSI-RS.
  • One or more of zero-power CSI-RS (which can be recorded as ZP-CSI-RS), CSI-interference measurement (which can be recorded as CSI-IM), etc., of rate matching.
  • the time reference of the periodic or semi-persistent CSI-RS transmission period (in units of time slots) and slot offset (in slot units) may be corresponding to its CSI resource configuration.
  • the DL BWP is a time reference. If the DL BWP is switched, the numerology changes, even if the period and slot offset value of the CSI-RS in slot units are unchanged, the periodic or semi-persistent CSI-RS transmitted on the newly activated DL BWP The period and time slot offset in seconds also changes, related to changes in the numerology of the DL BWP.
  • the network device For the periodic CSI reference signal (which can be recorded as P-CSI-RS), as long as the network device determines that the first channel state information CSI resource corresponding to the first downlink frequency domain transmission resource has been configured, that is, as long as it is determined There is a first channel state information CSI resource configuration corresponding to the first downlink frequency domain transmission resource, and the CSI reference signal transmission is effective. Therefore, the network device directly configures the first downlink frequency domain according to the first CSI resource configuration.
  • the CSI reference signal can be sent on the transmission resource, as shown in the timing diagram of Figure 2.
  • the user equipment may also receive the CSI reference signal on the first downlink frequency domain transmission resource according to the first CSI resource configuration.
  • a semi-persistent CSI reference signal (which may be denoted as SP-CSI-RS)
  • the network device determines that the first channel state information CSI resource corresponding to the first downlink frequency domain transmission resource has been configured, that is, determines When there is a first channel state information CSI resource configuration corresponding to the first downlink frequency domain transmission resource, there may be multiple modes of activating the SP-CSI-RS, and the first downlink frequency domain transmission resource (for example, the first The effective time of the downlink bandwidth part DL BWPj) may be before or after the effective time of the SP-CSI-RS activation.
  • the network device may send the first activation indication on the first downlink frequency domain transmission resource after sending the first indication to activate the first downlink frequency domain transmission resource.
  • the downlink frequency domain transmission resource is taken as the downlink bandwidth part DL BWP, and the transmission of the SP-CSI-RS is activated on the second downlink bandwidth part DL BWPi (can be activated by MAC CE), and has started Sent according to the configured send cycle.
  • the network device When the network device sends a first indication indicating handover from the DL BWPi to the first downlink bandwidth portion DL BWPj, and switches to DL BWPj after the handover time (in this case, the DL BWPj is in an active state), the network device stops at the DL BWPj The SP-CSI-RS is transmitted on the upper side, and correspondingly, the user equipment also stops receiving the SP-CSI-RS on the DL BWPj.
  • the network device sends the first activation indication to the user equipment on the DL BWPj, and reactivates (again, can be activated by the MAC CE) the SP-CSI-RS corresponding to the DL BWPj
  • the network device follows the DL BWPj corresponding to the DL BWPj.
  • the CSI resource configuration sends an SP-CSI-RS.
  • the user equipment will receive the SP-CSI-RS according to the CSI resource configuration corresponding to the DL BWPj.
  • the network device may send the first activation indication on the second downlink frequency domain transmission resource before sending the first indication to activate the first downlink frequency domain transmission resource. Then, after switching to the first downlink frequency domain transmission resource (for example, the downlink bandwidth part DL BWPj), the SP-CSI-RS may be directly sent according to the CSI resource configuration corresponding to the first downlink frequency domain transmission resource.
  • the user equipment also receives the SP-CSI-RS according to the CSI resource configuration corresponding to the first downlink frequency domain transmission resource.
  • the foregoing first activation indication may be used only for transmitting the SP-CSI-RS on the first downlink frequency domain transmission resource (for example, DL BWPj), and may also be used to activate sending on the at least one downlink frequency domain transmission resource.
  • SP-CSI-RS (It can be understood that at least one downlink frequency domain transmission resource includes the foregoing first downlink frequency domain transmission resource).
  • the CSI configuration information includes a CSI resource configuration corresponding to the at least one downlink frequency domain transmission resource
  • the foregoing first activation indication may be used to activate any downlink frequency domain transmission resource included in the CSI configuration information.
  • SP-CSI-RS for CSI resource configuration when the CSI configuration information includes a CSI resource configuration corresponding to the at least one downlink frequency domain transmission resource, the foregoing first activation indication may be used to activate any downlink frequency domain transmission resource included in the CSI configuration information.
  • SP-CSI-RS for CSI resource configuration.
  • the sending the first activation indication may include: sending a media access control control unit MAC CE, where the MAC CE includes the first activation indication.
  • the network device may also send the first activation indication in the first indication.
  • the first indication is the downlink control information DCI
  • the SP may be added in the DCI to indicate which CSI resource configuration SP- is transmitted on which downlink frequency domain transmission resource.
  • the CSI-RS may also change the meaning of the original field in the DCI to indicate which CSI resource configuration SP-CSI-RS is sent on which downlink frequency domain transmission resource.
  • the network device may send the SP-CSI-RS according to the first CSI resource configuration corresponding to the first downlink frequency domain transmission resource, without re-activation, before sending the deactivation indication. (Activated on the second downlink frequency domain transmission resource). And when the network device sends the deactivation indication, stopping sending the CSI reference signal on the first downlink frequency domain transmission resource, where the deactivation indication is used to notify the user equipment that the network device stops sending CSI on the at least one downlink frequency domain transmission resource.
  • the at least one downlink frequency domain transmission resource includes the foregoing first downlink frequency domain transmission resource.
  • the user equipment will also stop receiving the CSI reference signal on the first downlink frequency domain transmission resource.
  • the above exemplifies how to transmit a CSI reference signal whose periodic characteristics are periodic and semi-persistent when it is determined that there is a first channel state information CSI resource setting corresponding to the first downlink frequency domain transmission resource.
  • the periodic characteristic of the CSI reference signal is periodic or semi-persistent
  • the CSI reference signal corresponding to the first downlink frequency domain transmission resource is not transmitted.
  • the user equipment does not receive the CSI reference signal corresponding to the first downlink frequency domain transmission resource.
  • the most recently configured CSI resource configuration may be determined as the first CSI resource configuration, and further based on the first CSI resource.
  • the CSI reference signal corresponding to the first downlink frequency domain transmission resource is sent on the first downlink frequency domain transmission resource.
  • the user equipment receives the CSI reference signal corresponding to the first downlink frequency domain transmission resource on the first downlink frequency domain transmission resource, based on the recently configured CSI resource configuration (the first CSI resource configuration). It can be understood that “recently configured” refers to a first CSI resource configuration whose configuration generation time is closest to the time when the first downlink frequency domain transmission resource is activated.
  • the transmission and reception of signals can be performed according to the configuration information corresponding to the new frequency domain transmission resource, thereby realizing the uninterrupted wireless communication.
  • the network device sends the channel state information CSI reference signal
  • a new uplink and/or downlink frequency domain transmission resource is activated, for example, switching to a new bandwidth part BWP, or opening a new secondary cell, etc.
  • the present application may be used.
  • the reference signal transmitting method provided by the embodiment discloses that the CSI reference signal is continuously transmitted to meet the communication requirement of the wireless communication system.
  • an embodiment of the present disclosure provides a reference signal receiving method, which is applied to a user equipment, where the method includes:
  • Step 201 Receive a first indication on the second downlink frequency domain transmission resource, where the first indication is used to activate the first downlink frequency domain transmission resource;
  • Step 203 When it is determined that the first channel state information CSI resource configuration corresponding to the first downlink frequency domain transmission resource exists, the resource is transmitted in the first downlink frequency domain according to the first CSI resource configuration.
  • the method may further include:
  • the first configuration information includes a CSI resource configuration corresponding to the at least one downlink frequency domain transmission resource, where the at least one downlink frequency domain transmission resource includes the first downlink frequency domain transmission resource;
  • the second configuration information is received, where the second configuration information includes a CSI resource configuration corresponding to all downlink frequency domain transmission resources, where the all downlink frequency domain transmission resources include the first downlink frequency domain transmission resource.
  • the method may further include:
  • the most recently configured CSI resource configuration is determined as the first CSI resource configuration.
  • the periodic characteristic of the CSI reference signal is periodic.
  • the period characteristic of the CSI reference signal is semi-persistent; receiving the CSI reference signal on the first downlink frequency domain transmission resource according to the first CSI resource configuration, including:
  • the first downlink frequency domain transmission resource When it is determined that the first downlink frequency domain transmission resource is in an active state, and receives a first activation indication from the network device, according to the first CSI resource configuration, on the first downlink frequency domain transmission resource Receiving the CSI reference signal;
  • the first activation indication is used to activate receiving the CSI reference signal on the first downlink frequency domain transmission resource, or to activate receiving the CSI reference signal on at least one downlink frequency domain transmission resource.
  • the method may further include any one of the following:
  • receiving the first indication After receiving the first indication, receiving the first activation indication on the first downlink frequency domain transmission resource.
  • the first indication carries the first activation indication.
  • the periodic characteristic of the CSI reference signal is semi-persistent, and the method further includes:
  • Receiving the deactivation indication stopping receiving the CSI reference signal on the at least one downlink frequency domain transmission resource, where the at least one downlink frequency domain transmission resource includes the first downlink frequency domain transmission resource.
  • the downlink frequency domain transmission resource includes at least one of a downlink bandwidth part BWP and a downlink secondary cell.
  • the transmission and reception of signals can be performed according to the configuration information corresponding to the new frequency domain transmission resource, thereby realizing the uninterrupted wireless communication.
  • the network device sends the channel state information CSI reference signal
  • a new uplink and/or downlink frequency domain transmission resource is activated, for example, switching to a new bandwidth part BWP, or opening a new secondary cell, etc.
  • the present application may be used.
  • the reference signal transmitting method provided by the embodiment discloses that the CSI reference signal is continuously transmitted to meet the communication requirement of the wireless communication system.
  • the embodiment of the present disclosure further provides a network device, as shown in FIG. 6, including:
  • the operation indication sending module 301 is configured to send a first indication on the second downlink frequency domain transmission resource, where the first indication is used to activate the first downlink frequency domain transmission resource;
  • the reference signal sending module 303 is configured to: when it is determined that there is a first channel state information CSI resource configuration corresponding to the first downlink frequency domain transmission resource, according to the first CSI resource configuration, in the first Transmitting the CSI reference signal on a horizontal frequency domain transmission resource; wherein the first CSI resource configuration includes a periodic characteristic of the CSI reference signal.
  • the network device further includes:
  • a first configuration information sending module configured to send first configuration information, where the first configuration information includes a CSI resource configuration corresponding to at least one downlink frequency domain transmission resource, where the at least one downlink frequency domain transmission resource includes the First downlink frequency domain transmission resource;
  • a second configuration information sending module configured to send the second configuration information, where the second configuration information includes a CSI resource configuration corresponding to all downlink frequency domain transmission resources, where all the downlink frequency domain transmission resources include the first Downstream frequency domain transmission resources.
  • the network device further includes:
  • a first CSI resource configuration determining module configured to determine a recently configured CSI resource configuration as the first CSI resource configuration when determining that there are multiple CSI resource configurations corresponding to the first downlink frequency domain transmission resource .
  • the period characteristic of the CSI reference signal is semi-persistent; and the reference signal sending module includes:
  • a first reference signal sending unit configured to: when it is determined that the first downlink frequency domain transmission resource is in an active state, and send a first activation indication to a user equipment, according to the first CSI resource configuration, in the first Transmitting the CSI reference signal on a downlink frequency domain transmission resource;
  • the first activation indication is used to activate to send the CSI reference signal on the first downlink frequency domain transmission resource, or to activate to send the CSI reference signal on at least one downlink frequency domain transmission resource.
  • the network device further includes any one of the following:
  • a first activation indication sending module configured to send the first activation indication on the second downlink frequency domain transmission resource before sending the first indication
  • a second activation indication sending module configured to send the first activation indication on the first downlink frequency domain transmission resource after sending the first indication.
  • the period characteristic of the CSI reference signal is semi-persistent
  • the network device further includes:
  • Deactivating the indication sending module when the sending the deactivation indication is sent, stopping sending the CSI reference signal on the at least one downlink frequency domain transmission resource, where the at least one downlink frequency domain transmission resource includes the first downlink frequency domain transmission Resources.
  • the network device provided by the embodiment of the present disclosure can implement the method performed by the network device in Embodiment 1, and the related description in Embodiment 1 is applicable to the embodiment, and details are not described herein again.
  • the transmission and reception of the signal can be performed according to the configuration information corresponding to the new frequency domain transmission resource, thereby realizing the uninterrupted wireless communication.
  • the network device sends the channel state information CSI reference signal
  • a new uplink and/or downlink frequency domain transmission resource is activated, for example, switching to a new bandwidth part BWP, or opening a new secondary cell, etc.
  • the present application may be used.
  • the reference signal transmitting method provided by the embodiment discloses that the CSI reference signal is continuously transmitted to meet the communication requirement of the wireless communication system.
  • an embodiment of the present disclosure provides a user equipment, where the user equipment includes:
  • the operation indication receiving module 401 is configured to receive a first indication on the second downlink frequency domain transmission resource, where the first indication is used to activate the first downlink frequency domain transmission resource;
  • the reference signal receiving module 403 is configured to: when it is determined that there is a first channel state information CSI resource configuration corresponding to the first downlink frequency domain transmission resource, according to the first CSI resource configuration, in the first The CSI reference signal is received on a horizontal frequency domain transmission resource; wherein the first CSI resource configuration includes a periodic characteristic of the CSI reference signal.
  • the user equipment further includes:
  • a first configuration information receiving module configured to receive first configuration information, where the first configuration information includes a CSI resource configuration corresponding to at least one downlink frequency domain transmission resource, where the at least one downlink frequency domain transmission resource includes the First downlink frequency domain transmission resource;
  • a second configuration information receiving module configured to receive second configuration information, where the second configuration information includes a CSI resource configuration corresponding to all downlink frequency domain transmission resources, where all downlink frequency domain transmission resources include the first Downstream frequency domain transmission resources.
  • the user equipment further includes:
  • a first CSI resource configuration determining module configured to determine a recently configured CSI resource configuration as the first CSI resource configuration when determining that there are multiple CSI resource configurations corresponding to the first downlink frequency domain transmission resource .
  • the periodic characteristic of the CSI reference signal is semi-persistent; and the reference signal receiving module includes:
  • a first reference signal receiving unit configured to: when determining that the first downlink frequency domain transmission resource is in an active state, and receiving a first activation indication from a network device, according to the first CSI resource configuration, Receiving the CSI reference signal on the first downlink frequency domain transmission resource;
  • the first activation indication is used to activate receiving the CSI reference signal on the first downlink frequency domain transmission resource, or to activate receiving the CSI reference signal on at least one downlink frequency domain transmission resource.
  • the user equipment further includes any one of the following:
  • the first activation indication receiving module is configured to receive the first activation indication on the second downlink frequency domain transmission resource before receiving the first indication
  • a second activation indication receiving module configured to receive the first activation indication on the first downlink frequency domain transmission resource after receiving the first indication.
  • the periodic characteristic of the CSI reference signal is semi-persistent
  • the user equipment further includes:
  • Deactivating the indication receiving module when receiving the deactivation indication, stopping receiving the CSI reference signal on the at least one downlink frequency domain transmission resource, where the at least one downlink frequency domain transmission resource includes the first downlink frequency domain transmission Resources.
  • the user equipment provided by the embodiment of the present disclosure can implement the method performed by the user equipment in Embodiment 2, and the related descriptions in Embodiments 1 and 2 are applicable to this embodiment, and details are not described herein again.
  • the transmission and reception of the signal can be performed according to the configuration information corresponding to the new frequency domain transmission resource, thereby realizing the uninterrupted wireless communication.
  • the network device sends the channel state information CSI reference signal
  • a new uplink and/or downlink frequency domain transmission resource is activated, for example, switching to a new bandwidth part BWP, or opening a new secondary cell, etc.
  • the present application may be used.
  • the reference signal transmitting method provided by the embodiment discloses that the CSI reference signal is continuously transmitted to meet the communication requirement of the wireless communication system.
  • FIG. 8 is a block diagram of a user equipment of another embodiment of the present disclosure.
  • the user equipment 700 shown in FIG. 8 includes at least one processor 701, a memory 702, at least one network interface 704, and a user interface 703.
  • the various components in user device 700 are coupled together by a bus system 705.
  • the bus system 705 is used to implement connection communication between these components.
  • the bus system 705 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 705 in FIG.
  • the user interface 703 may include a display, a keyboard, or a pointing device (eg, a mouse, a trackball, a touchpad, or a touch screen, etc.).
  • a pointing device eg, a mouse, a trackball, a touchpad, or a touch screen, etc.
  • the memory 702 in an embodiment of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be a read-only memory (ROM), a programmable read only memory (Programmable ROM (PROM), an erasable programmable read only memory (ErasablePROM, EPROM), and an electrically erasable Program an read only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SDRAM Synchronous Connection Dynamic Random Access Memory
  • DirectRambusRAM Direct Memory Bus Random Memory
  • the memory 702 of the systems and methods described in the embodiments of the present disclosure is intended to comprise, without being limited to, these and any other suitable types of memory.
  • memory 702 stores elements, executable modules or data structures, or a subset thereof, or their extended set: operating system 7021 and application 7022.
  • the operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks.
  • the application 7022 includes various applications, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services.
  • a program implementing the method of the embodiments of the present disclosure may be included in the application 7022.
  • the user equipment further includes: a computer program stored on the memory and operable on the processor, the computer program being executed by the processor to implement the following steps:
  • the first CSI resource configuration includes a periodic characteristic of a CSI reference signal.
  • Processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in a form of software.
  • the processor 701 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, and a discrete gate. Or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in connection with the embodiments of the present disclosure may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software modules can be located in a conventional computer readable storage medium of the art, such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the computer readable storage medium is located in a memory, and the processor reads the information in the memory and combines the hardware to perform the steps of the above method.
  • the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the embodiment of the reference signal transmitting method are implemented.
  • the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDevices, DSPDs), Programmable Logic Devices (Programmable Logic Devices, PLDs).
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDevices Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGA Field-Programmable Gate Array
  • the techniques described in the embodiments of the present disclosure may be implemented by modules (eg, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • the software code can be stored in memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the first CSI resource configuration includes a periodic characteristic of a CSI reference signal.
  • the user equipment 700 can implement various processes implemented by the user equipment in the foregoing embodiments. To avoid repetition, details are not described herein again.
  • the transmission and reception of the signal can be performed according to the configuration information corresponding to the new frequency domain transmission resource, thereby realizing the uninterrupted wireless communication.
  • the network device sends the channel state information CSI reference signal
  • a new uplink and/or downlink frequency domain transmission resource is activated, for example, switching to a new bandwidth part BWP, or opening a new secondary cell, etc.
  • the present application may be used.
  • the reference signal transmitting method provided by the embodiment discloses that the CSI reference signal is continuously transmitted to meet the communication requirement of the wireless communication system.
  • FIG. 9 is a structural diagram of a network device according to an embodiment of the present disclosure, which can implement the details of the reference signal sending method in the foregoing embodiment, and achieve the same effect.
  • the network device 2600 includes a processor 2601, a transceiver 2602, a memory 2603, a user interface 2604, and a bus interface, where:
  • the network device 2600 further includes: a computer program stored on the memory 2603 and executable on the processor 2601. When the computer program is executed by the processor 2601, the following steps are implemented:
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 2601 and various circuits of memory represented by memory 2603.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 2602 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 2604 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 2601 is responsible for managing the bus architecture and the usual processing, and the memory 2603 can store data used by the processor 2601 when performing operations.
  • the transmission and reception of the signal can be performed according to the configuration information corresponding to the new frequency domain transmission resource, thereby realizing the uninterrupted wireless communication.
  • the network device sends the channel state information CSI reference signal
  • a new uplink and/or downlink frequency domain transmission resource is activated, for example, switching to a new bandwidth part BWP, or opening a new secondary cell, etc.
  • the present application may be used.
  • the reference signal transmitting method provided by the embodiment discloses that the CSI reference signal is continuously transmitted to meet the communication requirement of the wireless communication system.

Abstract

本公开公开了一种参考信号发送方法，应用于网络设备，所述方法包括：在第二下行频域传输资源上发送第一指示，所述第一指示用于激活第一下行频域传输资源；当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号，其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。

Description

参考信号发送和接收方法及装置
相关申请的交叉引用
本申请主张在2018年2月14日在中国提交的中国专利申请号No.201810152167.8的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信领域，尤其涉及参考信号发送和接收方法及装置。
背景技术
随着移动通信技术的发展，第五代(5 Generation，5G)移动通信系统呼之欲出。为支持更大的系统与用户吞吐量，5G系统支持在频域上进行划分，使得用户设备能够在不同的频域传输资源上接收和发送信号。
例如，5G系统支持最大400MHz系统带宽，远大于LTE最大20MHz的系统带宽，因而支持更大的系统与用户吞吐量。同时，5G系统也支持动态灵活的带宽分配，可以将系统带宽划分成多个带宽部分(Band Width Part，BWP)，以支持窄带终端用户，或节能模式下的终端用户，使其只需在其中部分系统带宽上工作。
又例如，可以采用载波聚合(Carrier Aggregation，CA)技术，将2个或更多的成分载波(Component Carrier，CC)聚合在一起以支持更大的传输带宽。每个成分载波CC对应一个独立的小区Cell。工作在主频带上的小区称为主小区(Primary Cell，PCell)，工作在辅频带上的小区称为辅小区(Secondary Cell，SCell)。在无线通信过程中，可以根据需要激活(或可称为开启)不同的辅小区SCell以提供额外的无线资源，满足通信需求。
在存在多个频域传输资源的通信系统中，可以根据需要激活不同的频域传输资源进行无线通信。因此，亟需一种参考信号发送和接收方法，能够在频域传输资源发生改变时，保持周期性/半持续性信道状态信息参考信号的接收和发送不间断。
发明内容
本公开实施例的目的是提供一种参考信号发送和接收方法和装置，以使得在频域传输资源发生改变时，信道状态信息参考信号的接收和发送能够持续不间断。
第一方面，提供了一种参考信号发送方法，应用于网络设备，该方法包括：
在第二下行频域传输资源上发送第一指示，所述第一指示用于激活第一下行频域传输资源；
当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
第二方面，提供了一种参考信号接收方法，应用于用户设备，所述方法包括：
在第二下行频域传输资源上接收第一指示，所述第一指示用于激活第一下行频域传输资源；
当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
第三方面，提供了一种网络设备，所述网络设备包括：
操作指示发送模块，用于在第二下行频域传输资源上发送第一指示，所述第一指示用于激活第一下行频域传输资源；
参考信号发送模块，用于当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
第四方面，提供了一种用户设备，所述用户设备包括：
操作指示接收模块，用于在第二下行频域传输资源上接收第一指示，所 述第一指示用于激活第一下行频域传输资源；
参考信号接收模块，用于当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
第五方面，提供了一种网络设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面，提供了一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如第一方面所述的方法的步骤。
第七方面，提供了一种用户设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如第二方面所述的方法的步骤。
第八方面，提供了一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如第二方面所述的方法的步骤。
在本公开实施例中，在激活新的频域传输资源时，能够根据新的频域传输资源所对应的配置信息进行信号的发送与接收，从而实现了无线通信的不间断，例如，网络设备在发送信道状态信息CSI参考信号时，若激活了新的下行频域传输资源，例如，切换到新的带宽部分BWP，或者开启了新的辅小区等，采用本公开实施例提供的参考信号发送和接收方法，能够不间断的进行CSI参考信号的发送和接收，满足无线通信系统的通信需求。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本公开的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是本公开实施例提供的由网络设备执行的参考信号发送方法的流程 示意图；
图2是本公开实施例提供的方法中网络设备发送信息的一种时序示意图；
图3是本公开实施例提供的方法中网络设备发送信息的第二种时序示意图；
图4是本公开实施例提供的方法中网络设备发送信息的第三种时序示意图；
图5是本公开实施例提供的由用户设备执行的参考信号发送方法的流程示意图；
图6是本公开实施提供的网络设备的结构示意图；
图7是本公开实施例提供的用户设备的结构示意图；
图8是本公开实施例提供的用户设备的又一种结构示意图；
图9是本公开实施例提供的网络设备的又一种结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本公开的技术方案，可以应用于多种有类似多个频域传输资源或者空域位置的通信系统，例如第五代(5-Generation，5G)新空口(New Radio，NR)移动通信系统，连接到5G核心网5GC的LTE eLTE(E-UTRA connect to 5GC)等。
用户端(User Equipment，UE)，也可称之为移动终端(Mobile Terminal，MT)、移动用户设备等，可以经无线接入网(例如，RAN，Radio Access Network)与一个或多个核心网进行通信，用户设备可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。
基站，可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)， 也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(eNB或e-NodeB，evolutional Node B)及5G基站(gNB)，本公开并不限定，但为描述方便，下述实施例以gNB为例进行说明。
为了更加灵活的进行信号的接收和发送，在5G系统中，可以对频域进行划分。例如，可以将系统带宽划分为多个部分，形成多个带宽部分(Band Width Part，BWP)；也可以对系统的频带、载波或成分载波(component carrier)进行划分，形成多个频域传输资源，形成多个辅小区(Secondary Cell，SCell)。
在通信系统中，网络设备可以为用户设备配置服务小区的频域传输资源。例如，可以通过高层信令——无线资源控制(Radio Resource Control，RRC)消息，为用户设备配置用于下行(Down Link)接收的至少一个下行带宽部分(Downlink Band Width Part，DL BWP)，若配置了多个下行带宽部分DL BWP，则可以组成下行带宽部分集合(DL BWP set)。可以规定，网络设备可以为用户设备配置最多四个下行带宽部分DL BWP。又例如，可以通过高层信令——无线资源控制RRC消息，为用户设备配置用于上行(UL Link)发送的至少一个上行带宽部分(Uplink Band Width Part，UL BWP)，若配置了多个上行带宽部分UL BWP，则可以组成上行带宽部分集合(UL BWP set)。可以规定，网络设备可以为用户设备配置最多四个上行带宽部分UL BWP。
对于划分有多个频域传输资源(以频域传输资源为带宽部分BWP为例)的通信系统，网络设备可以根据需要，通过在物理下行控制信道(Physical Downlink Control Channel，PDCCH)上发送下行控制信息(Downlink Control Information，DCI)，来指示激活的下行带宽部分DL BWP，例如，可以用下行控制信息DCI中的带宽部分指示(Bandwidth part indicator)字段来激活下行带宽部分DL BWP。相对应地，用户设备按照下行控制信息DCI所指示的下行带宽部分DL BWP所对应数值参数(numerology)的子载波间隔(Subcarrier spacing)和循环前缀(Cyclic Prefix，CP)的长度，在物理下行控制信道PDCCH和物理下行共享信道(Physical Downlink Shared Channel，PDSCH)上接收信息。
除此之外，网络设备还可以根据需要，在下行DCI中的带宽部分指示(Bandwidth part indicator)字段指示激活的上行带宽部分UL BWP。相对应 地，用户设备按照所在上行带宽部分UL BWP配置的子载波间隔和CP长度，在物理上行控制信道(Physical Uplink Control Channel，PUCCH)和物理上行共享信道(Physical Uplink Shared Channel，PUSCH)上发送信息。
以下结合附图，详细说明本公开各实施例提供的技术方案。
实施例1
参见图1所示，本公开实施例提供了一种参考信号发送方法，应用于网络设备，该方法用于发送信道状态信息CSI参考信号，可具体包括：
步骤101：在第二下行频域传输资源上发送第一指示，第一指示用于激活第一下行频域传输资源。
需要说明的是，网络设备执行步骤101发送的第一指示，能够激活第一下行频域传输资源。例如，频域传输资源为下行带宽部分DL BWP时，网络设备通过发送第一指示，可以将下行带宽部分DL BWP从第二下行带宽部分DL BWP(可以记为DL BWPi)切换到第一下行带宽部分DL BWP(可以记为DL BWPj)。能够理解，网络设备在切换至第一下行带宽部分DL BWP后，将停止在第二下行带宽部分DL BWP上向用户设备发送信息。
又例如，频域传输资源为下行辅小区SCell时，网络设备通过发送第一指示，可以激活第一下行辅小区DL SCell(可以记为DL SCellj)。能够理解，激活(也可称为开启)第一下行辅小区DL SCellj后，网络设备可以在第一下行辅小区DL SCellj上向用户设备发送信息，与此同时，在发送第一指示时所在的第二下行辅小区DL SCell(可以记为DL SCelli)或者下行主小区DL PCell上，网络设备仍然可以继续向用户设备发送信息。
可选的，当下行频域传输资源为下行带宽部分DL BWP时，网络设备可以发送包括上述第一指示的下行控制信息DCI，激活第一下行频域传输资源(具体为第一下行带宽部分)。
可选的，当下行频域传输资源为下行辅小区DL SCell时，网络设备可以发送包含上述第一指示的媒体访问控制控制单元(Medium Access Control-Control Element，MAC CE)，激活第一下行频域传输资源(具体为第一下行辅小区)。
步骤103：当确定存在与第一下行频域传输资源相对应的第一信道状态 信息CSI资源配置时，根据第一CSI资源配置，在第一下行频域传输资源上发送CSI参考信号；其中，第一CSI资源配置中包含CSI参考信号的周期特性。
需要说明的是，与下行频域传输资源相对应的CSI资源配置，可以由网络设备通过发送携带有CSI资源配置(Resource setting)的配置信息进行配置。配置信息可以采用无线资源控制RRC消息的方式发送。在具体实施时，配置信息中可以包括与至少一个下行频域传输资源相对应的CSI资源配置，也可以进一步包括与所有下行频域传输资源相对应的CSI资源配置。网络设备既可以为各下行频域传输资源独立的配置CSI资源配置(相当于一个CSI资源配置中仅配置对应的一个下行频域传输资源)，也可以在一个CSI资源配置中配置对应的多个下行频域传输资源，例如所有的下行频域传输资源。
可选的，CSI资源配置的配置信息中可以包含CSI参考信号(Reference Signal，简称RS)的周期特性，具体可以包括：周期性(Periodic，P)、半持续性(Semi-Persistent，SP)和非周期性(Aperiodic，AP)。对于周期性的CSI参考信号(可以记为P-CSI-RS)或者半持续性的CSI参考信号(可以记为SP-CSI-RS)，CSI资源配置的配置信息中可以包括CSI参考信号周期配置参数(可以记为CSI-RS-timeConfig参数)，该参数用于配置CSI参考信号的周期参数，可以具体包括发送周期periodicity和时隙偏移(slot offset)等。CSI资源配置的配置信息中还可以包括CSI参考信号(可以记为CSI-RS)资源的端口数、图案(pattern)等信息。可选的，周期性的CSI参考信号P-CSI-RS和/或半持续性的CSI参考信号SP-CSI-RS中可以包括非零功率CSI-RS(可以记为NZP CSI-RS)、用于速率匹配(rate matching)的零功率CSI-RS(可以记为ZP-CSI-RS)、CSI-干扰测量(可以记为CSI-IM)等中的一项或多项。
可选地，周期性或半持续性的CSI-RS发送周期(以时隙为单位)以及时隙偏移(slot offset)(以时隙为单位)的时间参考可以以其CSI资源配置对应的DL BWP为时间参考。如果DL BWP发生切换，numerology发生变化，即使以时隙为单位的CSI-RS的周期和时隙偏移数值不变，新激活的DL BWP上发送的周期性或半持续性的CSI-RS的以秒为单位的周期和时隙偏移也会发生变化，与DL BWP的numerology的变化相关。
对于周期性的CSI参考信号(可以记为P-CSI-RS)，只要网络设备确定已经配置了第一下行频域传输资源相对应的第一信道状态信息CSI资源，也就是说，只要确定存在与第一下行频域传输资源相对应的第一信道状态信息CSI资源配置，CSI参考信号的发送即可生效，因此，网络设备直接根据第一CSI资源配置，在第一下行频域传输资源上发送CSI参考信号即可，参见图2时序图所示。相对应的，用户设备也可以根据第一CSI资源配置，在第一下行频域传输资源上接收CSI参考信号。
对于半持续性的CSI参考信号(可以记为SP-CSI-RS)，当网络设备确定已经配置了第一下行频域传输资源相对应的第一信道状态信息CSI资源，也就是说，确定存在与第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，可以有多种激活发送SP-CSI-RS的方式，并且第一下行频域传输资源(例如第一下行带宽部分DL BWPj)的生效时间可能在SP-CSI-RS激活的生效时间之前或者之后。
可选的，网络设备可以在发送第一指示激活第一下行频域传输资源之后，在第一下行频域传输资源上发送第一激活指示。参见图3时序图所示，下行频域传输资源取为下行带宽部分DL BWP，SP-CSI-RS的发送在第二下行带宽部分DL BWPi上已经激活(可通过MAC CE激活)，并已开始按照配置的发送周期发送。当网络设备发送第一指示，指示从DL BWPi切换到第一下行带宽部分DL BWPj，并且在经过切换时间切换至DL BWPj(此时，DL BWPj处于激活状态)时，网络设备停止在DL BWPj上发送SP-CSI-RS，相对应的，用户设备也停止在DL BWPj上接收SP-CSI-RS。而仅当网络设备在DL BWPj上向用户设备发送第一激活指示，重新激活(同样可通过MAC CE激活)对应于DL BWPj的SP-CSI-RS时，网络设备才会按照对应于DL BWPj的CSI资源配置发送SP-CSI-RS。相对应的，用户设备才会按照对应于DL BWPj的CSI资源配置接收SP-CSI-RS。
可选的，网络设备也可以在发送第一指示激活第一下行频域传输资源之前，在第二下行频域传输资源上发送第一激活指示。则当切换到第一下行频域传输资源(例如下行带宽部分DL BWPj)后，可直接按照对应于第一下行频域传输资源的CSI资源配置发送SP-CSI-RS。相对应的，用户设备也按照 对应于第一下行频域传输资源的CSI资源配置接收SP-CSI-RS。
能够理解，上述第一激活指示可以仅用于激活在第一下行频域传输资源(例如DL BWPj)上发送SP-CSI-RS，也可以用于激活在至少一个下行频域传输资源上发送SP-CSI-RS(能够理解，此处至少一个下行频域传输资源包括上述第一下行频域传输资源)。特别地，当CSI配置信息中包括与至少一个下行频域传输资源相对应的CSI资源配置时，上述第一激活指示可以用于激活在CSI配置信息中包括的任意下行频域传输资源相对应的CSI资源配置的SP-CSI-RS。
需要说明的是，发送上述第一激活指示，可以包括：发送媒体访问控制控制单元MAC CE，所述MAC CE中包括上述第一激活指示。
可选的，网络设备也可以将第一激活指示携带在第一指示中发送。例如，在频域传输资源取为带宽部分BWP的情况下，第一指示为下行控制信息DCI，可以在DCI中增加字段指示在哪一个下行频域传输资源上发送哪种CSI资源配置的SP-CSI-RS，也可以改变DCI中原有字段的含义，以便指示在哪一个下行频域传输资源上发送哪种CSI资源配置的SP-CSI-RS。
可选的，参见图4时序图所示，网络设备可以在发送去激活指示前，按照对应于第一下行频域传输资源的第一CSI资源配置发送SP-CSI-RS，而无需重新激活(在第二下行频域传输资源上已经激活)。而当网络设备发送去激活指示时，停止在第一下行频域传输资源上发送CSI参考信号，去激活指示用于向用户设备告知网络设备将停止在至少一个下行频域传输资源上发送CSI参考信号，和/或用于指示用户设备停止在至少一个下行频域传输资源上接收CSI参考信号。可以理解到，至少一个下行频域传输资源包括上述第一下行频域传输资源。相对应的，用户设备接收到去激活指示后，也将停止在第一下行频域传输资源上接收CSI参考信号。
以上举例说明了当确定存在与第一下行频域传输资源相对应的第一信道状态信息CSI资源配置(resource setting)时，如何发送周期特性为周期性和半持续性的CSI参考信号。
可选的，无论CSI参考信号的周期特性为周期性还是半持续性的，当确定不存在与第一下行频域传输资源相对应的第一信道状态信息CSI资源配置 (resource setting)时，第一下行频域传输资源进入激活状态后并不发送对应于第一下行频域传输资源的CSI参考信号。相对应的，用户设备也不接收对应于第一下行频域传输资源的CSI参考信号。
可选的，当确定存在多个与第一下行频域传输资源相对应的CSI资源配置时，可以将最近配置的CSI资源配置确定为第一CSI资源配置，并进而基于该第一CSI资源配置，在第一下行频域传输资源上发送对应于第一下行频域传输资源的CSI参考信号。相对应的，用户设备也基于最近配置的CSI资源配置(第一CSI资源配置)，在第一下行频域传输资源上接收对应于第一下行频域传输资源的CSI参考信号。能够理解，“最近配置”是指，配置产生时间与第一下行频域传输资源被激活的时间最接近的第一CSI资源配置。
在本公开实施例中，在激活新的频域传输资源时，能够根据新的频域传输资源所对应的配置信息进行信号的发送与接收，从而实现了无线通信的不间断。网络设备在发送信道状态信息CSI参考信号时，若激活了新的上行和/或下行频域传输资源，例如，切换到新的带宽部分BWP，或者开启了新的辅小区等，则可采用本公开实施例提供的参考信号发送方法，不间断的进行CSI参考信号发送，满足无线通信系统的通信需求。
实施例2
参见图5所示，本公开实施例提供了一种参考信号接收方法，应用于用户设备，所述方法包括：
步骤201：在第二下行频域传输资源上接收第一指示，所述第一指示用于激活第一下行频域传输资源；
步骤203：当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
可选的，所述方法还可包括：
接收第一配置信息，所述第一配置信息中包括与至少一个下行频域传输资源相对应的CSI资源配置，所述至少一个下行频域传输资源包括所述第一 下行频域传输资源；或者，
接收第二配置信息，所述第二配置信息中包括与所有下行频域传输资源相对应的CSI资源配置，所述所有下行频域传输资源包括所述第一下行频域传输资源。
可选的，所述方法还可包括：
当确定存在多个与所述第一下行频域传输资源相对应的CSI资源配置时，将最近配置的CSI资源配置确定为所述第一CSI资源配置。
可选的，所述CSI参考信号的周期特性为周期性。
可选的，所述CSI参考信号的周期特性为半持续性；则根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号，包括：
当确定所述第一下行频域传输资源处于激活状态，且接收到来自网络设备的第一激活指示时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；
其中，所述第一激活指示用于激活在所述第一下行频域传输资源上接收所述CSI参考信号，或者用于激活在至少一个下行频域传输资源上接收所述CSI参考信号。
可选的，所述方法还可包括以下任一项：
在接收所述第一指示之前，在所述第二下行频域传输资源上接收所述第一激活指示；
在接收所述第一指示之后，在所述第一下行频域传输资源上接收所述第一激活指示。
可选的，所述第一指示中携带所述第一激活指示。
可选的，所述CSI参考信号的周期特性为半持续性，所述方法还包括：
接收去激活指示时，停止在至少一个下行频域传输资源上接收所述CSI参考信号，所述至少一个下行频域传输资源包括所述第一下行频域传输资源。
可选的，所述下行频域传输资源包括下行带宽部分BWP和下行辅小区中至少一种。
可以理解的是，从用户设备侧描述的网络设备与用户设备的交互，与实施例1中网络设备侧的描述相同，为避免重复，此处不再赘述。
在本公开实施例中，在激活新的频域传输资源时，能够根据新的频域传输资源所对应的配置信息进行信号的发送与接收，从而实现了无线通信的不间断。网络设备在发送信道状态信息CSI参考信号时，若激活了新的上行和/或下行频域传输资源，例如，切换到新的带宽部分BWP，或者开启了新的辅小区等，则可采用本公开实施例提供的参考信号发送方法，不间断的进行CSI参考信号发送，满足无线通信系统的通信需求。
实施例3
本公开实施例还提供一种网络设备，参见图6所示，包括：
操作指示发送模块301，用于在第二下行频域传输资源上发送第一指示，所述第一指示用于激活第一下行频域传输资源；
参考信号发送模块303，用于当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
可选的，所述网络设备还包括：
第一配置信息发送模块，用于发送第一配置信息，所述第一配置信息中包括与至少一个下行频域传输资源相对应的CSI资源配置，所述至少一个下行频域传输资源包括所述第一下行频域传输资源；或者，
第二配置信息发送模块，用于发送第二配置信息，所述第二配置信息中包括与所有下行频域传输资源相对应的CSI资源配置，所述所有下行频域传输资源包括所述第一下行频域传输资源。
可选的，所述网络设备还包括：
第一CSI资源配置确定模块，用于当确定存在多个与所述第一下行频域传输资源相对应的CSI资源配置时，将最近配置的CSI资源配置确定为所述第一CSI资源配置。
可选的，所述CSI参考信号的周期特性为半持续性；则所述参考信号发送模块，包括：
第一参考信号发送单元，用于当确定所述第一下行频域传输资源处于激 活状态，且向用户设备发送第一激活指示时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号；
其中，所述第一激活指示用于激活在所述第一下行频域传输资源上发送所述CSI参考信号，或者用于激活在至少一个下行频域传输资源上发送所述CSI参考信号。
可选的，所述网络设备还包括以下任一项：
第一激活指示发送模块，用于在发送所述第一指示之前，在所述第二下行频域传输资源上发送所述第一激活指示；
第二激活指示发送模块，用于在发送所述第一指示之后，在所述第一下行频域传输资源上发送所述第一激活指示。
可选的，所述CSI参考信号的周期特性为半持续性，所述网络设备还包括：
去激活指示发送模块，用于发送去激活指示时，停止在至少一个下行频域传输资源上发送所述CSI参考信号，所述至少一个下行频域传输资源包括所述第一下行频域传输资源。
能够理解，本公开实施例提供的网络设备，能够实现实施例1中网络设备执行的方法，实施例1中的相关描述均适用于本实施例，此处不再赘述。
在本公开实施例中，在激活新的频域传输资源时，能够根据新的频域传输资源所对应的配置信息进行信号的发送与接收，从而实现了无线通信的不间断。网络设备在发送信道状态信息CSI参考信号时，若激活了新的上行和/或下行频域传输资源，例如，切换到新的带宽部分BWP，或者开启了新的辅小区等，则可采用本公开实施例提供的参考信号发送方法，不间断的进行CSI参考信号发送，满足无线通信系统的通信需求。
实施例4
参见图7所示，本公开实施例提供一种用户设备，所述用户设备包括：
操作指示接收模块401，用于在第二下行频域传输资源上接收第一指示，所述第一指示用于激活第一下行频域传输资源；
参考信号接收模块403，用于当确定存在与所述第一下行频域传输资源 相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
可选的，所述用户设备还包括：
第一配置信息接收模块，用于接收第一配置信息，所述第一配置信息中包括与至少一个下行频域传输资源相对应的CSI资源配置，所述至少一个下行频域传输资源包括所述第一下行频域传输资源；或者，
第二配置信息接收模块，用于接收第二配置信息，所述第二配置信息中包括与所有下行频域传输资源相对应的CSI资源配置，所述所有下行频域传输资源包括所述第一下行频域传输资源。
可选的，所述用户设备还包括：
第一CSI资源配置确定模块，用于当确定存在多个与所述第一下行频域传输资源相对应的CSI资源配置时，将最近配置的CSI资源配置确定为所述第一CSI资源配置。
可选的，所述CSI参考信号的周期特性为半持续性；则所述参考信号接收模块，包括：
第一参考信号接收单元，用于当确定所述第一下行频域传输资源处于激活状态，且接收到来自网络设备的第一激活指示时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；
其中，所述第一激活指示用于激活在所述第一下行频域传输资源上接收所述CSI参考信号，或者用于激活在至少一个下行频域传输资源上接收所述CSI参考信号。
可选的，所述用户设备还包括以下任一项：
第一激活指示接收模块，用于在接收所述第一指示之前，在所述第二下行频域传输资源上接收所述第一激活指示；
第二激活指示接收模块，用于在接收所述第一指示之后，在所述第一下行频域传输资源上接收所述第一激活指示。
可选的，所述CSI参考信号的周期特性为半持续性，所述用户设备还包括：
去激活指示接收模块，用于接收去激活指示时，停止在至少一个下行频域传输资源上接收所述CSI参考信号，所述至少一个下行频域传输资源包括所述第一下行频域传输资源。
能够理解，本公开实施例提供的用户设备，能够实现实施例2中用户设备执行的方法，实施例1和2中的相关描述适用于本实施例，此处不再赘述。
在本公开实施例中，在激活新的频域传输资源时，能够根据新的频域传输资源所对应的配置信息进行信号的发送与接收，从而实现了无线通信的不间断。网络设备在发送信道状态信息CSI参考信号时，若激活了新的上行和/或下行频域传输资源，例如，切换到新的带宽部分BWP，或者开启了新的辅小区等，则可采用本公开实施例提供的参考信号发送方法，不间断的进行CSI参考信号发送，满足无线通信系统的通信需求。
实施例5
图8是本公开另一个实施例的用户设备的框图。图8所示的用户设备700包括：至少一个处理器701、存储器702、至少一个网络接口704和用户接口703。用户设备700中的各个组件通过总线系统705耦合在一起。可理解，总线系统705用于实现这些组件之间的连接通信。总线系统705除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图8中将各种总线都标为总线系统705。
其中，用户接口703可以包括显示器、键盘或者点击设备(例如，鼠标，轨迹球(trackball)、触感板或者触摸屏等。
可以理解，本公开实施例中的存储器702可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-OnlyMemory，ROM)、可编程只读存储器(ProgrammableROM，PROM)、可擦除可编程只读存储器(ErasablePROM，EPROM)、电可擦除可编程只读存储器(ElectricallyEPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(RandomAccessMemory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(StaticRAM，SRAM)、动态随机存取存储器 (DynamicRAM，DRAM)、同步动态随机存取存储器(SynchronousDRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(DoubleDataRate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(SynchlinkDRAM，SLDRAM)和直接内存总线随机存取存储器(DirectRambusRAM，DRRAM)。本公开实施例描述的系统和方法的存储器702旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中，存储器702存储了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集：操作系统7021和应用程序7022。
其中，操作系统7021，包含各种系统程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序7022，包含各种应用程序，例如媒体播放器(MediaPlayer)、浏览器(Browser)等，用于实现各种应用业务。实现本公开实施例方法的程序可以包含在应用程序7022中。
在本公开实施例中，用户设备还包括：存储在存储器上并可在处理器上运行的计算机程序，计算机程序被处理器执行时实现如下步骤：
在第二下行频域传输资源上接收第一指示，所述第一指示用于激活第一下行频域传输资源；
当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
上述本公开实施例揭示的方法可以应用于处理器701中，或者由处理器701实现。处理器701可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器701中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器701可以是通用处理器、数字信号处理器(DigitalSignalProcessor，DSP)、专用集成电路(ApplicationSpecific IntegratedCircuit，ASIC)、现成可编程门阵列(FieldProgrammableGateArray， FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本公开实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本公开实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的计算机可读存储介质中。该计算机可读存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。具体地，该计算机可读存储介质上存储有计算机程序，计算机程序被处理器执行时实现如上述参考信号发送方法实施例的各步骤。
可以理解的是，本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(ApplicationSpecificIntegratedCircuits，ASIC)、数字信号处理器(DigitalSignalProcessing，DSP)、数字信号处理设备(DSPDevice，DSPD)、可编程逻辑设备(ProgrammableLogicDevice，PLD)、现场可编程门阵列(Field-ProgrammableGateArray，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
可选的，计算机程序被处理器执行时还可实现如下步骤：
在第二下行频域传输资源上接收第一指示，所述第一指示用于激活第一下行频域传输资源；
当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
用户设备700能够实现前述实施例中用户设备实现的各个过程，为避免重复，这里不再赘述。
在本公开实施例中，在激活新的频域传输资源时，能够根据新的频域传输资源所对应的配置信息进行信号的发送与接收，从而实现了无线通信的不间断。网络设备在发送信道状态信息CSI参考信号时，若激活了新的上行和/或下行频域传输资源，例如，切换到新的带宽部分BWP，或者开启了新的辅小区等，则可采用本公开实施例提供的参考信号发送方法，不间断的进行CSI参考信号发送，满足无线通信系统的通信需求。
实施例6
请参阅图9，图9是本公开实施例应用的网络设备的结构图，能够实现前述实施例中参考信号发送方法的细节，并达到相同的效果。如图9所示，网络设备2600包括：处理器2601、收发机2602、存储器2603、用户接口2604和总线接口，其中：
在本公开实施例中，网络设备2600还包括：存储在存储器上2603并可在处理器2601上运行的计算机程序，计算机程序被处理器2601、执行时实现如下步骤：
在第二下行频域传输资源上发送第一指示，所述第一指示用于激活第一下行频域传输资源；
当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
在图9中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2601代表的一个或多个处理器和存储器2603代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机2602可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口2604还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器2601负责管理总线架构和通常的处理，存储器2603可以存储处理器2601在执行操作时所使用的数据。
在本公开实施例中，在激活新的频域传输资源时，能够根据新的频域传输资源所对应的配置信息进行信号的发送与接收，从而实现了无线通信的不间断。网络设备在发送信道状态信息CSI参考信号时，若激活了新的上行和/或下行频域传输资源，例如，切换到新的带宽部分BWP，或者开启了新的辅小区等，则可采用本公开实施例提供的参考信号发送方法，不间断的进行CSI参考信号发送，满足无线通信系统的通信需求。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (34)

  1. 一种参考信号发送方法，应用于网络设备，所述方法包括：
    在第二下行频域传输资源上发送第一指示，所述第一指示用于激活第一下行频域传输资源；
    当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源发送所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
  2. 根据权利要求1所述方法，还包括：
    发送第一配置信息，所述第一配置信息中包括与至少一个下行频域传输资源相对应的CSI资源配置，所述至少一个下行频域传输资源包括所述第一下行频域传输资源；或者，
    发送第二配置信息，所述第二配置信息中包括与所有下行频域传输资源相对应的CSI资源配置，所述所有下行频域传输资源包括所述第一下行频域传输资源。
  3. 根据权利要求1所述方法，还包括：
    当确定存在多个与所述第一下行频域传输资源相对应的CSI资源配置时，将最近配置的CSI资源配置确定为所述第一CSI资源配置。
  4. 根据权利要求1～3之任一所述方法，其中，所述CSI参考信号的周期特性为周期性。
  5. 根据权利要求1～3之任一所述方法，其中，所述CSI参考信号的周期特性为半持续性；则根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号，包括：
    当确定所述第一下行频域传输资源处于激活状态，且向用户设备发送第一激活指示时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号；
    其中，所述第一激活指示用于激活在所述第一下行频域传输资源上发送所述CSI参考信号，或者用于激活在至少一个下行频域传输资源上发送所述 CSI参考信号。
  6. 根据权利要求5所述方法，还包括以下任一项：
    在发送所述第一指示之前，在所述第二下行频域传输资源上发送所述第一激活指示；
    在发送所述第一指示之后，在所述第一下行频域传输资源上发送所述第一激活指示。
  7. 根据权利要求5所述方法，其中，所述第一指示中携带所述第一激活指示。
  8. 根据权利要求1～3、5～7之任一所述方法，其中，所述CSI参考信号的周期特性为半持续性，所述方法还包括：
    发送去激活指示时，停止在所述在至少一个下行频域传输资源上发送所述CSI参考信号，所述至少一个下行频域传输资源包括所述第一下行频域传输资源。
  9. 根据权利要求1～8之任一所述方法，其中，所述下行频域传输资源包括下行带宽部分BWP和下行辅小区中至少一种。
  10. 一种参考信号接收方法，应用于用户设备，所述方法包括：
    在第二下行频域传输资源上接收第一指示，所述第一指示用于激活第一下行频域传输资源；
    当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
  11. 根据权利要求10所述方法，还包括：
    接收第一配置信息，所述第一配置信息中包括与至少一个下行频域传输资源相对应的CSI资源配置，所述至少一个下行频域传输资源包括所述第一下行频域传输资源；或者，
    接收第二配置信息，所述第二配置信息中包括与所有下行频域传输资源相对应的CSI资源配置，所述所有下行频域传输资源包括所述第一下行频域传输资源。
  12. 根据权利要求10所述方法，还包括：
    当确定存在多个与所述第一下行频域传输资源相对应的CSI资源配置时，将最近配置的CSI资源配置确定为所述第一CSI资源配置。
  13. 根据权利要求10～12之任一所述方法，其中，所述CSI参考信号的周期特性为周期性。
  14. 根据权利要求10～12之任一所述方法，其中，所述CSI参考信号的周期特性为半持续性；则根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号，包括：
    当确定所述第一下行频域传输资源处于激活状态，且接收到来自网络设备的第一激活指示时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；
    其中，所述第一激活指示用于激活在所述第一下行频域传输资源上接收所述CSI参考信号，或者用于激活在至少一个下行频域传输资源上接收所述CSI参考信号。
  15. 根据权利要求14所述方法，还包括以下任一项：
    在接收所述第一指示之前，在所述第二下行频域传输资源上接收所述第一激活指示；
    在接收所述第一指示之后，在所述第一下行频域传输资源上接收所述第一激活指示。
  16. 根据权利要求14所述方法，其中，所述第一指示中携带所述第一激活指示。
  17. 根据权利要求10～16之任一所述方法，其中，所述CSI参考信号的周期特性为半持续性，所述方法还包括：
    接收去激活指示时，停止在至少一个下行频域传输资源上接收所述CSI参考信号，所述至少一个下行频域传输资源包括所述第一下行频域传输资源。
  18. 根据权利要求10～17之任一所述方法，其中，所述下行频域传输资源包括下行带宽部分BWP和下行辅小区中至少一种。
  19. 一种网络设备，包括：
    操作指示发送模块，用于在第二下行频域传输资源上发送第一指示，所 述第一指示用于激活第一下行频域传输资源；
    参考信号发送模块，用于当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
  20. 根据权利要求19所述网络设备，还包括：
    第一配置信息发送模块，用于发送第一配置信息，所述第一配置信息中包括与至少一个下行频域传输资源相对应的CSI资源配置，所述至少一个下行频域传输资源包括所述第一下行频域传输资源；或者，
    第二配置信息发送模块，用于发送第二配置信息，所述第二配置信息中包括与所有下行频域传输资源相对应的CSI资源配置，所述所有下行频域传输资源包括所述第一下行频域传输资源。
  21. 根据权利要求1所述网络设备，还包括：
    第一CSI资源配置确定模块，用于当确定存在多个与所述第一下行频域传输资源相对应的CSI资源配置时，将最近配置的CSI资源配置确定为所述第一CSI资源配置。
  22. 根据权利要求19～21之任一所述网络设备，其中，所述CSI参考信号的周期特性为半持续性；则所述参考信号发送模块，包括：
    第一参考信号发送单元，用于当确定所述第一下行频域传输资源处于激活状态，且向用户设备发送第一激活指示时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上发送所述CSI参考信号；
    其中，所述第一激活指示用于激活在所述第一下行频域传输资源上发送所述CSI参考信号，或者用于激活在至少一个下行频域传输资源上发送所述CSI参考信号。
  23. 根据权利要求22所述网络设备，还包括以下任一项：
    第一激活指示发送模块，用于在发送所述第一指示之前，在所述第二下行频域传输资源上发送所述第一激活指示；
    第二激活指示发送模块，用于在发送所述第一指示之后，在所述第一下行频域传输资源上发送所述第一激活指示。
  24. 根据权利要求19～23之任一所述网络设备，其中，所述CSI参考信号的周期特性为半持续性，所述网络设备还包括：
    去激活指示发送模块，用于发送去激活指示时，停止在至少一个下行频域传输资源上发送所述CSI参考信号，所述至少一个下行频域传输资源包括所述第一下行频域传输资源。
  25. 一种用户设备，包括：
    操作指示接收模块，用于在第二下行频域传输资源上接收第一指示，所述第一指示用于激活第一下行频域传输资源；
    参考信号接收模块，用于当确定存在与所述第一下行频域传输资源相对应的第一信道状态信息CSI资源配置时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；其中，所述第一CSI资源配置中包含CSI参考信号的周期特性。
  26. 根据权利要求25所述用户设备，还包括：
    第一配置信息接收模块，用于接收第一配置信息，所述第一配置信息中包括与至少一个下行频域传输资源相对应的CSI资源配置，所述至少一个下行频域传输资源包括所述第一下行频域传输资源；或者，
    第二配置信息接收模块，用于接收第二配置信息，所述第二配置信息中包括与所有下行频域传输资源相对应的CSI资源配置，所述所有下行频域传输资源包括所述第一下行频域传输资源。
  27. 根据权利要求25所述用户设备，还包括：
    第一CSI资源配置确定模块，用于当确定存在多个与所述第一下行频域传输资源相对应的CSI资源配置时，将最近配置的CSI资源配置确定为所述第一CSI资源配置。
  28. 根据权利要求25～27之任一所述用户设备，其中，所述CSI参考信号的周期特性为半持续性；则所述参考信号接收模块，包括：
    第一参考信号接收单元，用于当确定所述第一下行频域传输资源处于激活状态，且接收到来自网络设备的第一激活指示时，根据所述第一CSI资源配置，在所述第一下行频域传输资源上接收所述CSI参考信号；
    其中，所述第一激活指示用于激活在所述第一下行频域传输资源上接收 所述CSI参考信号，或者用于激活在至少一个下行频域传输资源上接收所述CSI参考信号。
  29. 根据权利要求28所述用户设备，其中，所述用户设备还包括以下任一项：
    第一激活指示接收模块，用于在接收所述第一指示之前，在所述第二下行频域传输资源上接收所述第一激活指示；
    第二激活指示接收模块，用于在接收所述第一指示之后，在所述第一下行频域传输资源上接收所述第一激活指示。
  30. 根据权利要求25～29之任一所述用户设备，其中，所述CSI参考信号的周期特性为半持续性，所述用户设备还包括：
    去激活指示接收模块，用于接收去激活指示时，停止在至少一个下行频域传输资源上接收所述CSI参考信号，所述至少一个下行频域传输资源包括所述第一下行频域传输资源。
  31. 一种网络设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至9中任一项所述的方法的步骤。
  32. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至9中任一项所述的方法的步骤。
  33. 一种用户设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求10至18中任一项所述的方法的步骤。
  34. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求10至18中任一项所述的方法的步骤。
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