WO2020061951A1 - 非授权频段上参考信号的发送方法、装置和系统 - Google Patents

非授权频段上参考信号的发送方法、装置和系统 Download PDF

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Publication number
WO2020061951A1
WO2020061951A1 PCT/CN2018/108102 CN2018108102W WO2020061951A1 WO 2020061951 A1 WO2020061951 A1 WO 2020061951A1 CN 2018108102 W CN2018108102 W CN 2018108102W WO 2020061951 A1 WO2020061951 A1 WO 2020061951A1
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Prior art keywords
time
information
transmission opportunity
resource
network device
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PCT/CN2018/108102
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English (en)
French (fr)
Inventor
张国玉
蒋琴艳
张磊
王昕�
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富士通株式会社
张国玉
蒋琴艳
张磊
王昕�
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Application filed by 富士通株式会社, 张国玉, 蒋琴艳, 张磊, 王昕� filed Critical 富士通株式会社
Priority to PCT/CN2018/108102 priority Critical patent/WO2020061951A1/zh
Publication of WO2020061951A1 publication Critical patent/WO2020061951A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, a device, and a system for transmitting a reference signal in an unlicensed frequency band.
  • a terminal device discovers a reference signal (Discover Reference Signal) configured by a serving cell in an authorized frequency band.
  • DRS Discover Reference Signal
  • 5G version 15 begins to discuss the unlicensed frequency band access technology based on New Radio (NR), and points out that it can implement unassisted unlicensed frequency band networks that work independently, that is, terminal equipment can directly connect To communicate in a cell operating in an unlicensed band. Therefore, the design of the signals or channels used for the initial access of the cells in the unlicensed frequency band becomes particularly important.
  • the channel occupied bandwidth (OCBied Bandwidth, OCB) requirement specified in the unlicensed frequency band transmission criteria is: the transmission signal needs to meet a channel bandwidth occupation rate of more than 80%.
  • the synchronization signal / broadcast channel block (SS / PBCH Block, SSB) used for initial access in the NR only occupies 20 resource blocks (RB), which does not meet 80% of the minimum access bandwidth (20MHz) of the unlicensed band. %.
  • the NR cell transmits at least four SSBs in one SS / PBCH burst, and there may be a gap in the time domain between the SSBs, as shown in Figures 1 and 2. Because the NR cell cannot always occupy the channel of the unlicensed frequency band, it may lose the channel occupation opportunity.
  • embodiments of the present invention provide a method, an apparatus, and a system for sending a reference signal on an unlicensed frequency band, so as to meet the channel occupied bandwidth requirements specified by the unlicensed frequency band transmission criteria. , And / or make the NR's cell maintain channel occupancy.
  • a method for transmitting a reference signal on an unlicensed frequency band includes:
  • the network device sends an information block for cell search to the terminal device in an unlicensed frequency band, and the information block for cell search includes at least one synchronization signal / broadcast channel block (SSB) and channel state information reference signal (CSI-RS) .
  • SSB synchronization signal / broadcast channel block
  • CSI-RS channel state information reference signal
  • a method for receiving a reference signal on an unlicensed frequency band includes:
  • the terminal device receives an information block for cell search sent by a network device in an unlicensed frequency band, and the information block for cell search includes at least one synchronization signal / broadcast channel block (SSB) and channel state information reference signal (CSI-RS ).
  • SSB synchronization signal / broadcast channel block
  • CSI-RS channel state information reference signal
  • an apparatus for sending a reference signal on an unlicensed frequency band which is configured in a network device, wherein the apparatus includes:
  • SSB broadcast channel block
  • CSI-RS channel state information reference signal
  • a device for receiving a reference signal in an unlicensed frequency band is provided and is configured in a terminal device, where the device includes:
  • a receiving unit which receives an information block for cell search sent by a network device in an unlicensed frequency band, the information block for cell search includes at least one synchronization signal / broadcast channel block (SSB) and channel state information reference signal (CSI -RS).
  • SSB synchronization signal / broadcast channel block
  • CSI -RS channel state information reference signal
  • a network device wherein the network device includes the apparatus described in the foregoing third aspect.
  • a terminal device wherein the terminal device includes the apparatus described in the foregoing fourth aspect.
  • a communication system includes the network device according to the fifth aspect and the terminal device according to the sixth aspect.
  • a computer-readable program wherein when the program is executed in a network device, the program causes a computer to execute the method in the first aspect in the network device .
  • a storage medium storing a computer-readable program, wherein the computer-readable program causes a computer to execute the method described in the foregoing first aspect in a network device.
  • a computer-readable program wherein when the program is executed in a terminal device, the program causes a computer to execute the method described in the foregoing second aspect in the terminal device .
  • a storage medium storing a computer-readable program, wherein the computer-readable program causes a computer to execute the method described in the foregoing second aspect in a terminal device.
  • the embodiment of the present invention has the beneficial effect that by transmitting SSB and CSI-RS in the information block used for cell search on the unlicensed frequency band, the channel occupied bandwidth requirement specified by the unlicensed frequency band transmission criteria can be met, and / or, NR Cell keeps channel occupancy.
  • FIG. 1 is a schematic diagram when the subcarrier interval in the NR is 15 kHz and the SS / PBCH burst includes 4 SSBs;
  • 2 is a schematic diagram when the subcarrier interval in the NR is 30 kHz and the SS / PBCH burst includes 4 SSBs;
  • FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a reference signal sending method on an unlicensed frequency band according to Embodiment 1;
  • 5 is a schematic diagram of one-to-one correspondence between transmission opportunities and SSBs
  • FIG. 6 is a schematic diagram of a correspondence relationship between an activated transmission opportunity and an SSB
  • FIG. 7 is a schematic diagram of index identification of a CSI-RS resource through multiple transmission opportunities
  • FIG. 8 is a schematic diagram of a reference signal receiving method on an unlicensed frequency band according to Embodiment 2;
  • FIG. 9 is a schematic diagram of a reference signal sending apparatus on an unlicensed band in Embodiment 3.
  • FIG. 10 is a schematic diagram of a reference signal receiving device in an unlicensed frequency band of Embodiment 4.
  • FIG. 11 is a schematic diagram of a network device according to Embodiment 5.
  • FIG. 12 is a schematic diagram of a terminal device of Embodiment 6.
  • first and second are used to distinguish different elements from each other by title, but they do not indicate the spatial arrangement or chronological order of these elements, and these elements should not be used by these terms. Restricted.
  • the term “and / or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising”, “including”, “having” and the like refer to the presence of stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.
  • the term “communication network” or “wireless communication network” may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), and so on.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • LTE-A Long Term Evolution-A
  • LTE- Advanced Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • communication between devices in a communication system may be performed according to a communication protocol at any stage, for example, it may include but is not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future 5G, New Radio (NR, New Radio), etc., and / or other communication protocols currently known or to be developed in the future.
  • 1G generation
  • 2G 2.5G, 2.75G
  • 5G New Radio
  • NR, New Radio New Radio
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services to the terminal device.
  • Network devices may include, but are not limited to, the following devices: Base Station (BS, Base Station), Access Point (AP, Access Point), Transmission and Reception Point (TRP, Transmission, Reception Point), Broadcast Transmitter, Mobile Management Entity (MME, Mobile Management entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), and so on.
  • BS Base Station
  • AP Access Point
  • TRP Transmission and Reception Point
  • Broadcast Transmitter Mobile Management Entity
  • MME Mobile Management Entity
  • gateway server
  • RNC Radio Network Controller
  • BSC Base Station Controller
  • Base stations may include, but are not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), and so on. In addition, it may also include remote radio head (RRH, Remote Radio Head), remote End wireless unit (RRU, Remote Radio Unit), relay (relay) or low power node (such as femto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low power node such as femto, pico, etc.
  • base station may include some or all of their functions, and each base station may provide communication coverage for a particular geographic area.
  • the term "cell” may refer to a base station and / or its coverage area, depending on the context in which the term is used.
  • the term "User Equipment” refers to, for example, a device that accesses a communication network through a network device and receives network services, and may also be called a "Terminal Equipment” (TE, Terminal).
  • Terminal equipment can be fixed or mobile, and can also be called mobile stations (MS, Mobile Station), terminals, users, subscriber stations (SS, Subscriber Station), access terminals (AT, Access Terminal), stations, etc. Wait.
  • Terminal devices may include, but are not limited to, the following devices: Cellular Phones, Personal Digital Assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones , Smartphones, smart watches, digital cameras, and more.
  • PDAs Personal Digital Assistants
  • wireless modems wireless communication devices
  • handheld devices machine-type communication devices
  • machine-type communication devices laptop computers
  • cordless phones Smartphones
  • smart watches digital cameras, and more.
  • the terminal device may also be a machine or device that performs monitoring or measurement.
  • the terminal device may include, but is not limited to, a Machine Type Communication (MTC) terminal, Vehicle communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, and so on.
  • MTC Machine Type Communication
  • D2D device-to-device
  • M2M machine-to-machine
  • FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present invention, and schematically illustrates a case where a terminal device and a network device are taken as an example.
  • the communication system 300 may include: a network device 301 and a terminal device 302.
  • FIG. 3 uses only one terminal device as an example for description.
  • the network device 301 is, for example, a network device gNB in an NR system.
  • the network device 301 and the terminal device 302 can perform an existing service or a service that can be implemented in the future.
  • these services include, but are not limited to: enhanced mobile broadband (eMBB), large-scale machine type communication (mMTC, massive Machine Type Communication), and high-reliability low-latency communication (URLLC, Ultra-Reliable and Low-Low- Latency Communication), and so on.
  • eMBB enhanced mobile broadband
  • mMTC large-scale machine type communication
  • URLLC Ultra-Reliable and Low-Low- Latency Communication
  • the terminal device 302 may send data to the network device 301, for example, using an unauthorized transmission method.
  • the network device 301 may receive data sent by one or more terminal devices 302, and feedback information (such as acknowledgement ACK / non-acknowledgement NACK) to the terminal device 302.
  • the terminal device 302 may confirm the end of the transmission process or may further New data transmission, or data retransmission can be performed.
  • FIG. 4 is a schematic diagram of a reference signal sending method on an unlicensed band according to this embodiment. Referring to FIG. 4, the method includes:
  • Step 401 The network device sends an information block for cell search to the terminal device in an unlicensed frequency band, and the information block for cell search includes at least one SSB and CSI-RS.
  • the above-mentioned "information block for cell search” may also be referred to as a Discovery Channel (DCH).
  • DCH Discovery Channel
  • the DCH may further include at least one bearer control.
  • COntrol, REsource, SET Information control resource set
  • PDSCH physical downlink shared channel
  • the "discovery channel” is just a name, and this embodiment is not limited to this. It may also be referred to as an initial access channel or similar to LTE as a discovery reference signal. For convenience of explanation, This embodiment is collectively referred to as an "information block for cell search".
  • the SSB and CSI-RS are transmitted in the information block used for cell search on the unlicensed band, which can meet the channel occupied bandwidth requirements specified in the unlicensed band transmission guidelines, and / or enable the NR cell to maintain the channel occupied right. .
  • the above CSI-RS can be used for one or more of channel state information measurement, wireless resource management, wireless link management (such as beam management), time-frequency synchronization, etc., this embodiment is not limited to this. .
  • the position of the CSI-RS in the information block is default, that is, the network device sends the CSI-RS on a default resource among the resources occupied by the information block used for cell search. .
  • a default CSI-RS resource For convenience of explanation, it is called a default CSI-RS resource.
  • the default CSI-RS resource may include any one or any combination of the following information: the frequency domain density of the CSI-RS, the time position of the CSI-RS, the number of antenna ports, and code division multiplexing (CDM )type.
  • the CSI-RS in the above-mentioned information block for cell search is eight antenna ports
  • the frequency domain density is 3
  • the time position is the first, 3, and 5 times of the time occupied by the information block for cell search.
  • the symbol is the next symbol of each SSB.
  • the type of CDM is CDM4-FD2-TD2.
  • the above-mentioned default CSI-RS resource is only an example, and this embodiment is not limited thereto.
  • the default CSI-RS resource may also include other contents.
  • the network device may also configure the CSI report for the terminal device.
  • the network device sends the first configuration information to the terminal device, and configures the terminal device with relevant information for CSI reporting through the first configuration information.
  • the related information may include configuration information of a CSI measurement object, and the measurement object here may be a selection function, and the selection function is used to select the above-mentioned default CSI-RS resource or a CSI-RS resource configured by a network device as Measurement object.
  • the configuration for CSI reporting includes a mandatory parameter, resourceForChannelMeasurement.
  • This parameter is used to configure the physical resources of the CSI measurement object (that is, CSI-RS).
  • the terminal device determines to send the CSI-RS according to the parameter. And then measure the CSI-RS on the resource and report the measurement result.
  • a resource for sending a CSI-RS is default, a higher layer does not need to configure a corresponding resource for a report of the CSI-RS (that is, a CSI report). Therefore, in this embodiment, the configuration of the CSI measurement object in the configuration for CSI reporting can be implemented by using the selection function described above.
  • the selection function is used to select the default CSI-RS resource in this embodiment, for example, it is represented as CSI-RS.
  • -ResourceInDCH or select the CSI-RS resource configured by the network device, for example, it is expressed as CSI-ResourceConfig.
  • the measurement object may not be selected through the selection function described above, but may be indicated by two options, one of which is the above-mentioned default CSI-RS resource of this embodiment, and the other is resourceForChannelMeasurement. At least one of these two options is a conditional option, that is, the other option appears when the other option defaults.
  • the position of the CSI-RS in the information block is configured by a network device.
  • the network device may send the second configuration information to the terminal device, and use the second configuration information to configure the terminal device for the network device to send the above-mentioned CSI-RS resource (referred to as a first time-frequency resource).
  • the resources belong to the resources occupied by the foregoing information block, that is, the resources occupied by the foregoing information block include resources for the network device to send the CSI-RS.
  • the network device may send the second configuration information through RRC (Radio Resource Control) configuration signaling, but this embodiment is not limited thereto.
  • RRC Radio Resource Control
  • the first time-frequency resource configured by the network device for the terminal device is default.
  • the network device may select at least one default candidate time-frequency resource from a plurality of default candidate time-frequency resource sets and notify the terminal device as the first time-frequency resource.
  • the network device may indicate, by using the second configuration information, the default alternative time-frequency resource selected by the network device from multiple default alternative time-frequency resource sets.
  • the terminal device can determine the location of the CSI-RS resource, and then receive the CSI-RS at the location.
  • the network device may indicate, through the second configuration information, the at least one default candidate time-frequency resource selected from the multiple default candidate time-frequency resource sets.
  • the network device further instructs the network device through other signaling.
  • a default candidate time-frequency resource is notified to the terminal device as the first time-frequency resource.
  • the network device may also send the first instruction information to the terminal device.
  • the at least one default candidate time-frequency resource is instructed by using the second configuration information, and one of the at least one default candidate time-frequency resource is instructed by using the first instruction information as the first time-frequency resource.
  • the above signaling may be MAC CE signaling, DCI signaling, a combination of the two, or other signaling, and this embodiment is not limited thereto.
  • the second configuration information includes time domain information of the first time-frequency resource.
  • the time-domain information of the first time-frequency resource may be indicated by a bitmap. That is, the network device indicates the resource (first time-frequency resource) for sending the CSI-RS through the bitmap. The terminal device learns the resource for sending the CSI-RS, that is, the first time-frequency resource according to the bitmap in the second configuration information.
  • the bits in the bitmap correspond one-to-one with the time unit occupied by the information block used for cell search, and each bit is used to indicate whether the time unit corresponding to the bit contains the resource element in the first time-frequency resource. (RE). If it contains, then the network device sends the CSI-RS in the time unit corresponding to this bit, that is, some or all of the resource elements in the time unit corresponding to this bit are the resources to send the CSI-RS. Conversely, if it does not, this bit The corresponding time unit does not send the CSI-RS, that is, the time unit corresponding to this bit does not include the resource for sending the CSI-RS.
  • RE time-frequency resource
  • the length of the bitmap (that is, the number of bits contained in the bitmap) is not less than the number of time units occupied by the information block used for cell search.
  • the time unit here may be an OFDM symbol, a time slot, or other defined time units.
  • the time domain information of the first time-frequency resource may be indicated by an integer value. That is, the network device indicates the resource (first time-frequency resource) for sending the CSI-RS by using the integer value. The terminal device learns a resource for sending a CSI-RS, that is, the first time-frequency resource according to the integer value in the second configuration information.
  • the integer value indicates a time unit among the time units occupied by the information blocks used for cell search, and the time is used as a time domain starting position of the first time-frequency resource.
  • the maximum value of the integer value is not less than the total number of time units occupied by the information blocks used for cell search.
  • the time unit here may be an OFDM symbol, a time slot, or another defined time unit.
  • the time domain information of the first time-frequency resource may be indicated by an index of the foregoing SSB. That is, the network device indicates the resource (first time-frequency resource) for sending the CSI-RS through the index of the SSB. The terminal device learns the resource for sending the CSI-RS, that is, the first time-frequency resource according to the SSB index and the default configuration in the second configuration information.
  • the default configuration may be that the last symbol of the first time-frequency resource is the previous symbol of the SSB identified by the index, that is, the first time-frequency resource is located before the resource occupied by the SSB. Therefore, after receiving the index of the SSB, the terminal device can know the location of the first time-frequency resource.
  • the default configuration may be that the first symbol of the first time-frequency resource is the first symbol after the SSB identified by the index, that is, the first time-frequency resource is located after the resource occupied by the SSB. Therefore, after receiving the index of the SSB, the terminal device can know the location of the first time-frequency resource.
  • the default configuration may also be that the first symbol of the first time-frequency resource is at least one of the symbols occupied by the SSB identified by the index, that is, the frequency division between the first time-frequency resource and the SSB resource Multiplexing (FDM, Frequency-Division Multiplexing) sends time resources of the SSB. Therefore, after receiving the index of the SSB, the terminal device can know the location of the first time-frequency resource.
  • FDM Frequency-Division Multiplexing
  • the SSB index may also be used to indicate the time domain information of the first time frequency resource in other ways.
  • the index of the SSB has other associations with the first time-frequency resource. According to the index of an SSB, the first time-frequency resource to which it is associated can be determined.
  • the time domain information of the first time-frequency resource may be indicated by an index of a transmission opportunity. That is, the network device indicates the resource (first time-frequency resource) to send the CSI-RS through the index of the transmission opportunity. The terminal device learns the resource for sending the CSI-RS, that is, the first time-frequency resource according to the index of the transmission opportunity in the second configuration information.
  • the network device may configure the terminal device with a detection window for detecting the above-mentioned information block for cell search.
  • the network device sends the third configuration information to the terminal device, and the third configuration information is
  • the terminal device configures the detection window, and the third configuration information includes the information of the detection window, for example, including at least one of the following information: a length of the detection window, a detected period, and a start position of the detection window.
  • the detection window includes at least one transmission opportunity
  • the network device may send the information block for cell search on the at least one transmission opportunity.
  • the transmission opportunity may be a possible starting time point of the above-mentioned information block for cell search, or may be a possible time period of the above-mentioned information block for cell search.
  • the network device may decide from which transmission opportunity to start sending the information block for cell search according to a detection result of a listen-before-talk (LBT) detection. For example, the network device starts LBT detection at the first transmission opportunity of the detection window. When the LBT detection is idle, the network device starts to send the above information block for cell search from the transmission opportunity. When the LBT detection is busy, The network device abandons sending the above-mentioned information block for cell search from the transmission opportunity, and performs LBT detection on the next transmission opportunity until the last transmission opportunity. If it is still detected as busy, the network device abandons transmission within the detection window.
  • the above information block for cell search may be default or configured by a network device. For example, if the network device configures the transmission opportunity by using the third configuration information, the third configuration information further includes the Configuration information for transmission opportunities.
  • LBT listen-before-talk
  • the time domain information of the first time-frequency resource may be indicated by the index of the transmission opportunity.
  • the time-frequency resource starting with the transmission opportunity identified by the index of the transmission opportunity includes the first time-frequency resource, and for example, the resource occupied by the transmission opportunity identified by the index of the transmission opportunity includes the first time-frequency resource .
  • the terminal device can learn the resource that may send the CSI-RS, that is, the first time-frequency resource, according to the index of the transmission opportunity included in the second configuration information.
  • the network device may The transmission opportunity sends the information block used for cell search.
  • the CSI-RS is sent on the first time-frequency resource.
  • the index of the SSB and the index of the transmission opportunity can correspond one by one.
  • the network device occupies the transmission opportunity.
  • the network device sends an SSB identified by the index of the SSB corresponding to the index of the transmission opportunity at the transmission opportunity. As shown in Figure 5, the network device successfully detects LBT on the transmission opportunity Oca.2.
  • Oca.2, Oca.3, Oca4, and Oca5 all belong to the channel occupation time of the network device, so the network device is in Oca.2, Oca.3 Oca4, Oca5 send SSB2, SSB3, SSB4, SSB1 corresponding to their respective.
  • DCH1 to DCH4 indicate the above-mentioned information blocks for cell search.
  • the index of the SSB may not correspond one-to-one to the index of the transmission opportunity, but one-to-one corresponding to the above-mentioned information block for cell search.
  • the first transmission opportunity sends the SSB with the smallest index value.
  • the transmission opportunity Oca. 2 is the first transmission opportunity belonging to the channel occupation time of the network device, and the network device can send the SSB with the smallest index value, that is, SSB1, at the transmission opportunity Oca. 2.
  • the time domain information of the first time-frequency resource may be indicated by an index of at least one transmission opportunity.
  • the network device sends the above-mentioned cell search information in the transmission opportunity.
  • the time domain information of the CSI-RSb resource is indicated by transmission opportunities 1, 3, and 5.
  • the network device LBT detects that the channel is idle at transmission opportunity 2.
  • the network device starts transmitting the above-mentioned application at transmission opportunity 2.
  • the terminal device that needs to measure the CSI-RS when the terminal device that needs to measure the CSI-RS is detected at transmission opportunity 3, the SSB contained in the information block for cell search is determined by the transmission opportunity to send the above information block for cell search. , The terminal device receives the CSI-RS b at the resource position of the corresponding CSI-RS b.
  • the second configuration information may be user-specific configuration information, that is, the terminal device served by the network device configures the first time-frequency resource, respectively, or public configuration information, that is, the network device serves the All terminal devices or a group of terminal devices (including at least two terminal devices) are configured with the same first time-frequency resource.
  • at least one CSI-RS resource set may be configured by using the common configuration information.
  • the CSI-RS resource set includes at least one first time-frequency resource.
  • one CSI-RS resource set in the at least one CSI-RS resource set is a resource set that sends the CSI-RS.
  • a network device configures at least one CSI-RS resource set through high-level signaling, and instructs a CSI-RS resource set to be sent in the above-mentioned information block for cell search through MAC CE signaling and / or DCI signaling.
  • the device is configured with a reporting configuration corresponding to at least one of the first time-frequency resources in the CSI-RS resource set, and then the terminal device reports the measurement result of the first time-frequency resource according to the content of the reported configuration.
  • the network device may further send fourth configuration information to the terminal device, and configure the at least one CSI-RS resource set for the terminal device through the fourth configuration information, where the configuration information indicates that a CSI-RS resource set includes at least one First time-frequency resource.
  • the network device may further send second instruction information to the terminal device, and use the second instruction information to instruct one of the at least one CSI-RS resource set to send a CSI-RS resource for the network device (first Time-frequency resources).
  • a configuration of a CSI-RS resource set in the fourth configuration information does not include the following parameters: used to indicate that a time unit in which the CSI-RS is sent is relative to a time unit in which the second instruction information is located The parameter of the time unit offset.
  • the aperiodicTriggeringOffset is configured with an information parameter in the aperiodic CSI-RS resource set configuration. This parameter is used to indicate that the time slot in which the resource in the resource set is sent is relative to the time slot in which the DCI sent by the CSI-RS is located Offset. Since the sending of information blocks for cell search on unlicensed bands depends on the detection result of LBT, it may start at any transmission opportunity within the detection window. This parameter will be meaningless.
  • the aperiodicTriggeringOffset parameter will not be configured in the configuration of the CSI-RS resource set in the information block used for cell search, and the terminal device considers that the CSI-RS resource set indicated by the MAC CE and / or DCI signaling is sent at a corresponding position in the next DCH.
  • the method of this embodiment enables a network device and a terminal device to reach a consensus on CSI-RS resources (such as a transmission position, a mapping pattern, and the like), and at the same time, can be used for cell search (such as initial (Access and measurement) information blocks to meet the requirements of the channel occupied bandwidth and maintain the continuity of data transmission.
  • CSI-RS resources such as a transmission position, a mapping pattern, and the like
  • FIG. 8 is a schematic diagram of a method for receiving a reference signal in an unlicensed band according to this embodiment. Referring to FIG. 8, the method includes:
  • Step 801 The terminal device receives an information block for cell search sent by a network device on an unlicensed frequency band, and the information block for cell search includes at least one SSB and a CSI-RS.
  • the channel state information reference signal is used for at least one of channel state information measurement, radio resource management, radio link management, and time-frequency synchronization.
  • the position of the CSI-RS is default, that is, the network device sends the CSI-RS on a default resource.
  • a default CSI-RS resource may include any one of the following information or any combination of information: the frequency domain density of the channel state information reference signal, the time position of the channel state information reference signal, the number of antenna ports, and the CDM type.
  • the terminal device receives the CSI-RS on a default resource.
  • the terminal device may also receive the first configuration information sent by the network device.
  • the first configuration information may be the configuration information reported by the CSI. Based on the first configuration information, the terminal device may confirm that the measurement object is this embodiment.
  • the default CSI-RS resource is also the CSI-RS resource configured by the network device.
  • the first configuration information has been described in Embodiment 1, and will not be repeated here.
  • the location of the CSI-RS is configured by a network device.
  • the terminal device may further receive the second configuration information sent by the network device, and obtain a resource (referred to as a first time-frequency resource) for sending the CSI-RS by the network device according to the second configuration information, and then the CSI- RS resources receive CSI-RS.
  • the second configuration information has been described in Embodiment 1, and will not be repeated here.
  • the second configuration information indicates at least one default candidate time-frequency resource selected by the network device from a set of multiple default candidate time-frequency resources, where the at least one default candidate time-frequency is used as the foregoing first For a time-frequency resource, the terminal device receives the CSI-RS on the at least one default candidate time-frequency resource.
  • the second configuration information indicates at least one default candidate time-frequency resource selected by the network device from a set of multiple default candidate time-frequency resources, and the network device further instructs the at least one other signal through other signaling.
  • One of the default candidate time-frequency resources is used as the first time-frequency resource.
  • the network device sends the first instruction information to the terminal device, and the foregoing instruction is performed by using the first instruction information. Then, the terminal device may also receive the network device. Receiving the CSI-RS on the default candidate time-frequency resource indicated by the indication information (referred to as the first indication information).
  • the second configuration information includes time-domain information of a CSI-RS resource (the above-mentioned first time-frequency resource).
  • the indication methods of the time domain information include the following.
  • the first is indicated by a bitmap.
  • the bits in the bitmap correspond to the time units occupied by the above-mentioned information blocks used for cell search, and one bit is used to indicate whether the time unit corresponding to the bit contains the first time-frequency resource.
  • Resource element (RE) Resource element
  • the second is indicated by an integer value.
  • the integer value indicates that one of the time units occupied by the information blocks used for cell search is the time domain start position of the first time-frequency resource, and the maximum value of the integer value is not less than The total number of time units occupied by the above information blocks for cell search. That is, the start position of the resources of the CSI-RS is indicated by the integer value. Therefore, the terminal device can also confirm the CSI-RS resource based on the integer value, and then receive the CSI-RS on the CSI-RS resource.
  • the third is indicated by the index of the SSB.
  • the resources of the CSI-RS are related to the index of the SSB.
  • the relationship between them can be the default configuration.
  • the terminal device can confirm the resources of the CSI-RS according to the index and the default configuration of the SSB.
  • the default configuration may be that the last symbol of the CSI-RS resource is the previous symbol of the SSB identified by the index; or the first symbol of the CSI-RS resource is the second symbol after the SSB identified by the index.
  • One symbol; or, the first symbol of the CSI-RS resource is at least one of the symbols occupied by the SSB identified by the index.
  • CSI-RS and SSB are staggered in time, and they are also multiplexed in real time; in the latter method, CSI-RS and SSB are staggered in frequency, that is, frequency division multiplexing.
  • the fourth is indicated by the index of the transmission opportunity.
  • the resources of the CSI-RS are related to the transmission opportunities.
  • the transmission opportunities here may be configured by the network device or may be the default.
  • the network device may send the third configuration information to the terminal device, and use the third configuration information to configure the terminal device with a detection window of an information block for cell search, and the terminal device may receive the third configuration information and obtain the detection. window.
  • the information of the detection window may include any one or more of the following: the length of the detection window, the period of the detection window, and the starting position of the detection window, but is not limited thereto.
  • the detection window includes at least one of the foregoing transmission opportunities, and the transmission opportunity may be a possible starting time point of the information block used for cell search, or a possible time period of the information block used for cell search.
  • the third configuration information may further include configuration information of the transmission opportunity, and the terminal device may obtain the transmission opportunity of the foregoing information block for cell search according to the third configuration information.
  • the resources of the CSI-RS can be indicated by the index of the transmission opportunity, for example, the time domain position of the resources of the CSI-RS is indicated.
  • the CSI-RS resource may be included in the time-frequency resource whose transmission opportunity identified by the index of the transmission opportunity is a starting point.
  • the resources of the CSI-RS may be included in resources occupied by a transmission opportunity identified by an index of the transmission opportunity. Therefore, the terminal device can learn the resources of the CSI-RS according to the configured index of the transmission opportunity.
  • the network device may send the above-mentioned The cell searches for the information block, and sends the CSI-RS on the CSI-RS resource indicated by the index of the transmission opportunity.
  • the terminal device may receive the CSI-RS on the resources of the CSI-RS.
  • the index of the SSB corresponds to the index of the transmission opportunity.
  • the transmission opportunity belongs to the channel occupation time of the network device, that is, when the network device occupies the channel
  • the network device The SSB identified by the index of the SSB corresponding to the index of the transmission opportunity may be transmitted at the transmission opportunity. Therefore, the terminal device can receive the SSB at the corresponding transmission opportunity.
  • the network device may send the SSB of the minimum index value at a first transmission opportunity of a channel occupation time belonging to the network device in a detection window. Therefore, the terminal device can receive the SSB at the corresponding transmission opportunity.
  • the second configuration information may be user-specific configuration information or public configuration information. If it is common configuration information, the network device may also send fourth configuration information to the terminal device, and configure at least one CSI-RS resource set for the terminal device through the fourth configuration information, where the at least one CSI-RS resource set includes the foregoing CSI -RS resources. In addition, the network device may also send second instruction information to the terminal device, and use the second instruction information to indicate one CSI-RS resource set in the at least one CSI-RS resource set as the network device to send the CSI-RS resource set. . Therefore, the terminal device can receive the fourth configuration information and the second indication information, thereby acquiring the at least one CSI-RS resource set and the network device sending the CSI-RS resource set.
  • the above-mentioned fourth configuration information does not include the following parameters: a parameter for indicating a time unit offset of the time unit in which the CSI-RS is transmitted with respect to the time unit in which the second instruction information is located. Therefore, the terminal device may consider that the resource set of the CSI-RS indicated by the second indication information is in the next (or other) information block used for cell search.
  • the method of this embodiment enables a network device and a terminal device to reach a consensus on CSI-RS resources (such as a transmission position, a mapping pattern, and the like), and transmits SSB and CSI- in information blocks used for cell search on an unlicensed band.
  • the RS can meet the channel occupation bandwidth requirements specified in the unlicensed band transmission guidelines, and / or enable the NR cell to maintain channel occupation rights.
  • This embodiment provides an apparatus for transmitting a reference signal in an unlicensed frequency band, which is configured on a network device. Since the principle of solving the problem of the apparatus is similar to the method of Embodiment 1, its specific implementation can refer to the method of Embodiment 1. Implementation, the same content will not be repeated.
  • FIG. 9 is a schematic diagram of a device for sending a reference signal on an unlicensed frequency band in this embodiment.
  • the device for sending a reference signal on the unlicensed frequency band 900 in this embodiment may include:
  • a first sending unit 901 sends an information block for cell search to a terminal device in an unlicensed frequency band, and the information block for cell search includes at least one SSB and a CSI-RS.
  • the CSI-RS is used for at least one of channel state information measurement, radio resource management, radio link management, and time-frequency synchronization.
  • the first sending unit 901 may send the CSI-RS on a default resource among resources occupied by the information block used for cell search. That is, the CSI-RS resources are default, and are referred to as default CSI-RS resources for short.
  • the default CSI-RS resource may include any one of the following information or any combination of information: the frequency domain density of the CSI-RS, the time position of the CSI-RS, the number of antenna ports, CDM type.
  • the apparatus 900 may further include:
  • the second sending unit 902 is configured to send the first configuration information to the terminal device, where the first configuration information is used to configure the terminal device with related information for reporting channel state information (CSI), and includes a configuration of a CSI measurement object.
  • Information the configuration information of the measurement object is a selection function, and the selection function is used to select one of the default CSI-RS resource and the CSI-RS resource configured by the network device as a measurement object.
  • the apparatus 900 may further include:
  • a third sending unit 903, which sends second configuration information to the terminal device, where the second configuration information is used to configure the terminal device for the network device to send the CSI-RS resource (first time-frequency resource)
  • the first time-frequency resource belongs to a resource occupied by the information block for cell search. That is, the resources of the CSI-RS are configured by the network device.
  • the second configuration information instructs the network device to select at least one default candidate time-frequency resource from a set of multiple default candidate time-frequency resources as the first time Frequency resources.
  • the apparatus 900 may further include:
  • a fourth sending unit 904 sends first instruction information to the terminal device, where the first instruction information indicates one of the at least one default candidate time-frequency resource as the first time-frequency resource.
  • the second configuration information includes time domain information of the first time-frequency resource.
  • the above-mentioned time domain information may be indicated by a bitmap, and the bits in the bitmap correspond to the time units occupied by the information blocks used for cell search, and one bit is used to indicate Whether the time unit includes a resource element (RE) in the first time-frequency resource.
  • the above-mentioned time unit may be an OFDM symbol or a time slot.
  • the above-mentioned time domain information may be indicated by an integer value, where the integer value indicates that a time unit in a time unit occupied by the information block for cell search is a time domain start of the first time-frequency resource. Position, the maximum value of the integer value is not less than the total number of time units occupied by the information blocks used for cell search.
  • the above-mentioned time unit may be an OFDM symbol or a time slot.
  • the above-mentioned time domain information may be indicated by an index of the SSB, and the terminal device determines the first time-frequency resource according to the index of the SSB and a default configuration.
  • the default configuration may be that the last symbol of the first time-frequency resource is the previous symbol of the SSB identified by the index; or the first symbol of the first time-frequency resource is the SSB identified by the index Or the first symbol after the first; or the first symbol of the first time-frequency resource is at least one of the symbols occupied by the SSB identified by the index.
  • the foregoing time domain information may be indicated by an index of a transmission opportunity.
  • the apparatus 900 may further include:
  • a fifth sending unit 905 which sends third configuration information to the terminal device, where the third configuration information includes information of a detection window of the information block used for cell search, and the information of the detection window includes at least one of the following: Species: the length of the detection window, the period of the detection window, and the starting position of the detection window.
  • the detection window includes at least one transmission opportunity, where the transmission opportunity is a possible starting point of the information block for cell search, or the transmission opportunity is the for cell Possible time period of searched information block.
  • the third configuration information may further include configuration information of the transmission opportunity, or the configuration information of the transmission opportunity may be default configuration information.
  • the time domain information may be indicated by an index of the transmission opportunity, for example, the first time-frequency resource is included in a time-frequency resource whose transmission opportunity identified by the index of the transmission opportunity is a starting point, Alternatively, the resource occupied by the transmission opportunity identified by the index of the transmission opportunity includes the first time-frequency resource.
  • the first sending unit 901 may send the information block for cell search at the transmission opportunity identified by the index, Sending the CSI-RS on the first time-frequency resource.
  • the index of the SSB and the index of the transmission opportunity may correspond one-to-one.
  • the first sending unit 901 may Sending the SSB identified by the index of the SSB corresponding to the index of the transmission opportunity.
  • the first sending unit 901 may also send the SSB with the smallest index value at the first transmission opportunity that belongs to the channel occupation time of the network device in one of the detection windows.
  • the second configuration information may be user-specific configuration information or public configuration information.
  • the apparatus 900 may further include:
  • a sixth sending unit 906, which sends fourth configuration information to the terminal device, where the fourth configuration information is used to configure at least one CSI-RS resource set for the terminal device, and the CSI-RS resource set includes at least one The first time-frequency resource.
  • the apparatus 900 may further include:
  • a seventh sending unit 907 which sends second instruction information to the terminal device, where the second instruction information is used to instruct one CSI-RS resource set in the at least one CSI-RS resource set to send for the network device A set of resources of the CSI-RS.
  • a configuration of a CSI-RS resource set in the fourth configuration information does not include the following parameter: used to indicate a time unit in which the reference signal is sent relative to a time at which the second indication information is located A parameter for the unit's time unit offset.
  • the apparatus of this embodiment allows a network device and a terminal device to reach a consensus on CSI-RS resources (such as a transmission position, a mapping pattern, and the like), and transmits SSB and CSI-
  • CSI-RS resources such as a transmission position, a mapping pattern, and the like
  • the RS can meet the channel occupation bandwidth requirements specified in the unlicensed band transmission guidelines, and / or enable the NR cell to maintain channel occupation rights.
  • This embodiment provides a device for receiving a reference signal in an unlicensed band, which is configured on a terminal device.
  • the principle of the device for solving the problem is similar to the method of Embodiment 2. For specific implementation, refer to Embodiment 2. The content is the same The description will not be repeated.
  • FIG. 10 is a schematic diagram of a receiving apparatus for a reference signal in an unlicensed band according to this embodiment. As shown in FIG. 10, the receiving apparatus 1000 includes:
  • a first receiving unit 1001 which receives an information block for cell search sent by a network device on an unlicensed frequency band, the information block for cell search includes at least one synchronization signal / broadcast channel block (SSB) and channel state information Reference signal (CSI-RS).
  • SSB broadcast channel block
  • CSI-RS channel state information Reference signal
  • the CSI-RS is used for at least one of channel state information measurement, radio resource management, radio link management, and time-frequency synchronization.
  • the first receiving unit 1001 receives the CSI-RS on a default resource in the information block for cell search, that is, a resource of the CSI-RS is a default , Called the default CSI-RS resource.
  • the default CSI-RS resource may include any one of the following information or any combination of information: the frequency domain density of the CSI-RS, the time position of the CSI-RS, the number of antenna ports, CDM type.
  • the device 1000 may further include:
  • a second receiving unit 1002 receives first configuration information sent by the network device, where the first configuration information is related information configured by the terminal device for reporting channel state information (CSI), and includes information about a CSI measurement object.
  • Configuration information the configuration information of the measurement object is a selection function, and the selection function is used to select one of the default CSI-RS resource and the CSI-RS resource configured by the network device as a measurement object.
  • the device 1000 may further include:
  • the third receiving unit 1003 is configured to receive second configuration information sent by the network device, where the second configuration information is used to configure a resource for the terminal device to send the CSI-RS (a first time-frequency resource).
  • the first time-frequency resource belongs to a resource occupied by the information block for cell search.
  • the second configuration information instructs the network device to select at least one default candidate time-frequency resource as a first time-frequency resource from a set of multiple default candidate time-frequency resources.
  • the device 1000 may further include:
  • a fourth receiving unit 1004 receives first indication information sent by the network device, where the first indication information indicates one of the at least one default candidate time-frequency resource as the first time-frequency resource.
  • the second configuration information may include time domain information of the first time-frequency resource.
  • the time domain information may be indicated by a bitmap, and the bits in the bitmap correspond to the time unit occupied by the information block used for cell search, and one bit is used to indicate Whether the time unit corresponding to the bit includes a resource element (RE) in the first time-frequency resource.
  • RE resource element
  • the time domain information may be indicated by an integer value, and the integer value indicates that one of the time units occupied by the information block used for cell search is the first time-frequency resource. In the time domain starting position, the maximum value of the integer value is not less than the total number of time units occupied by the information blocks used for cell search.
  • the time unit may be an OFDM symbol or a time slot.
  • the time domain information may be indicated by an index of the SSB.
  • the device 1000 may further include:
  • a determining unit 1005 determines the first time-frequency resource according to the SSB index and a default configuration.
  • the default configuration here may be that the last symbol of the first time-frequency resource is the previous symbol of the SSB identified by the index, or that the first symbol of the first time-frequency resource is the index of The first symbol after the identified SSB; or the first symbol of the first time-frequency resource is at least one of the symbols occupied by the SSB identified by the index.
  • the time domain information may be indicated by an index of transmission opportunities.
  • the apparatus 1000 may further include:
  • a fifth receiving unit 1006 which receives third configuration information sent by the network device, where the third configuration information includes information of a detection window of the information block for cell search, and the information of the detection window includes at least the following One: the length of the detection window, the period of the detection window, and the starting position of the detection window.
  • the detection window includes at least one transmission opportunity, where the transmission opportunity is a possible starting point of the information block for cell search, or the transmission opportunity is the for cell Possible time period of searched information block.
  • the third configuration information may further include configuration information of the transmission opportunity, or the configuration information of the transmission opportunity is default configuration information.
  • the time domain information is indicated by an index of the transmission opportunity
  • the first time-frequency resource is included in the time-frequency resource whose transmission opportunity is identified by the index of the transmission opportunity, or
  • the resource occupied by the transmission opportunity identified by the transmission opportunity index includes the first time-frequency resource.
  • the first receiving unit 1001 may receive the information block for cell search at the transmission opportunity identified by the index, Receiving the CSI-RS on the first time-frequency resource.
  • the index of the SSB corresponds to the index of the transmission opportunity
  • the first receiving unit 1001 may receive at the transmission opportunity The SSB identified by the index of the SSB corresponding to the index of the transmission opportunity.
  • the first receiving unit 1001 may also receive the SSB of the smallest index value at the first transmission opportunity belonging to the channel occupation time of the network device in one of the detection windows.
  • the second configuration information is user-specific configuration information or public configuration information.
  • the apparatus 1000 may further include:
  • a sixth receiving unit 1007 which receives fourth configuration information sent by the network device, where the fourth configuration information is used to configure at least one CSI-RS resource set for the terminal device, and the CSI-RS resource set includes at least One said first time-frequency resource.
  • the apparatus 1000 may further include:
  • a seventh receiving unit 1008 which receives second indication information sent by the network device, where the second indication information is used to indicate that one CSI-RS resource set in the at least one CSI-RS resource set is the network device A set of resources for transmitting the CSI-RS.
  • one of the CSI-RS resource set configurations in the fourth configuration information does not include the following parameters: the time unit used to indicate that the reference signal is sent relative to the time unit where the second indication information is located The parameter of the time unit offset.
  • the apparatus of this embodiment enables a network device and a terminal device to reach a consensus on CSI-RS resources (such as a transmission position, a mapping pattern, and the like), and transmits SSB and CSI- in information blocks used for cell search on an unlicensed band.
  • the RS can meet the channel occupation bandwidth requirements specified in the unlicensed band transmission guidelines, and / or enable the NR cell to maintain channel occupation rights.
  • An embodiment of the present invention further provides a network device, where the network device includes the apparatus described in Embodiment 3.
  • FIG. 11 is a schematic structural diagram of an implementation manner of a network device according to an embodiment of the present invention.
  • the network device 1100 may include a central processing unit (CPU) 1101 and a memory 1102; the memory 1102 is coupled to the central processing unit 1101.
  • the memory 1102 can store various data; in addition, it also stores a program for information processing, and executes the program under the control of the central processing unit 1101 to receive various information sent by the terminal device and send various information to the terminal device.
  • the functions of the device described in Example 3 may be integrated into the central processing unit 1101, and the functions of the device described in Embodiment 3 are implemented by the central processing unit 1101, wherein the device described in Example 3 The functions are incorporated here and will not be repeated here.
  • the device described in Example 3 may be configured separately from the central processing unit 1101.
  • the device described in Example 3 may be a chip connected to the central processing unit 1101. Control to realize the function of the device described in the third embodiment.
  • the network device 1100 may further include a transceiver 1103, an antenna 1104, and the like; wherein the functions of the above components are similar to those in the prior art, and details are not described herein again. It is worth noting that the network device 1100 does not necessarily include all the components shown in FIG. 11; in addition, the network device 1100 may also include components not shown in FIG. 11, and reference may be made to the prior art.
  • the channel occupied bandwidth requirements specified by the unlicensed frequency band transmission guidelines can be met, and / or The cell maintains channel occupancy.
  • An embodiment of the present invention further provides a terminal device, where the terminal device includes the apparatus described in Embodiment 4.
  • FIG. 12 is a schematic diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device 1200 may include a central processing unit 1201 and a memory 1202; the memory 1202 is coupled to the central processing unit 1201. It is worth noting that this figure is exemplary; other types of structures can also be used to supplement or replace the structure to implement telecommunication functions or other functions.
  • the functions of the device described in Example 4 may be integrated into the central processing unit 1201, and the functions of the device described in Embodiment 4 are implemented by the central processor 1201, wherein the device described in Example 4 The functions are incorporated here and will not be repeated here.
  • the device described in Example 4 may be configured separately from the central processing unit 1201.
  • the device described in Example 4 may be configured as a chip connected to the central processing unit 1201. Control to realize the functions of the device described in the fourth embodiment.
  • the terminal device 1200 may further include a communication module 1203, an input unit 1204, an audio processing unit 1205, a display 1206, and a power supply 1207. It is worth noting that the terminal device 1200 does not have to include all the components shown in FIG. 12; in addition, the terminal device 1200 may also include components not shown in FIG. 12, and reference may be made to the prior art.
  • the central processing unit 1201 is sometimes also called a controller or an operation control, and may include a microprocessor or other processor devices and / or logic devices.
  • the central processing unit 1201 receives input and controls each of the terminal devices 1200. Operation of parts.
  • the memory 1202 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable devices.
  • the above configuration-related information can be stored, and in addition, programs for executing the related information can be stored.
  • the central processing unit 1201 can execute the program stored in the memory 1202 to implement information storage or processing.
  • the functions of other components are similar to the existing ones, and will not be repeated here.
  • the components of the terminal device 1200 may be implemented by dedicated hardware, firmware, software, or a combination thereof without departing from the scope of the present invention.
  • the terminal device of this embodiment by transmitting SSB and CSI-RS in the information block for cell search on the unlicensed frequency band, the channel occupied bandwidth requirements specified by the unlicensed frequency band transmission guidelines can be met, and / or The cell maintains channel occupancy.
  • An embodiment of the present invention further provides a communication system.
  • the communication system includes a network device and a terminal device.
  • the network device is, for example, the network device 1100 described in Embodiment 5, and the terminal device is, for example, the terminal device 1200 described in Embodiment 6.
  • the terminal device is, for example, a UE served by gNB.
  • the terminal device also includes the conventional composition and functions of the terminal device. As described in Embodiment 6, it is not described here. More details.
  • the network device may be, for example, a gNB in NR.
  • the network device also includes the conventional composition and functions of the network device. As described in Embodiment 5, here No longer.
  • the channel occupied bandwidth requirements specified by the unlicensed frequency band transmission guidelines can be met, and / or The cell maintains channel occupancy.
  • An embodiment of the present invention further provides a computer-readable program, wherein when the program is executed in a network device, the program causes a computer to execute the method in Embodiment 1 in the network device.
  • An embodiment of the present invention further provides a storage medium storing a computer-readable program, wherein the computer-readable program causes a computer to execute the method described in Embodiment 1 in a network device.
  • An embodiment of the present invention further provides a computer-readable program, wherein when the program is executed in a terminal device, the program causes a computer to execute the method in Embodiment 2 in the terminal device.
  • An embodiment of the present invention further provides a storage medium storing a computer-readable program, wherein the computer-readable program causes a computer to execute the method described in Embodiment 2 in a terminal device.
  • the above devices and methods of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer-readable program that, when executed by a logic component, enables the logic component to implement the apparatus or constituent components described above, or enables the logic component to implement various methods described above. Or steps.
  • Logic components are, for example, field programmable logic components, microprocessors, processors used in computers, and the like.
  • the present invention also relates to a storage medium for storing the above programs, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.
  • the methods / devices described in connection with the embodiments of the present invention may be directly embodied as hardware, software modules executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams and / or one or more combinations of functional block diagrams shown in the figure may correspond to each software module of a computer program flow, or to each hardware module.
  • These software modules can respectively correspond to the steps shown in the figure.
  • These hardware modules can be implemented by using a field programmable gate array (FPGA) to cure these software modules.
  • FPGA field programmable gate array
  • a software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor so that the processor can read information from and write information to the storage medium; or the storage medium may be a component of the processor.
  • the processor and the storage medium may reside in an ASIC.
  • This software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module may be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • the functional blocks and / or one or more combinations of the functional blocks described in the drawings it can be implemented as a general-purpose processor, digital signal processor (DSP) for performing the functions described in the present invention. ), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof.
  • DSP digital signal processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • One or more of the functional blocks and / or one or more combinations of the functional blocks described with reference to the drawings may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors Processor, one or more microprocessors in conjunction with DSP communications, or any other such configuration.
  • a device for receiving a reference signal on an unlicensed frequency band configured in a terminal device, wherein the device includes:
  • a first receiving unit which receives an information block for cell search sent by a network device on an unlicensed frequency band, the information block for cell search includes at least one synchronization signal / broadcast channel block (SSB) and channel state information reference Signal (CSI-RS).
  • SSB broadcast channel block
  • CSI-RS channel state information reference Signal
  • the channel state information reference signal is used for at least one of channel state information measurement, radio resource management, radio link management, and time-frequency synchronization.
  • the default resource includes any one of the following information or a combination of arbitrary information: the frequency domain density of the channel state information reference signal, and the channel state information reference signal. Time position, number of antenna ports, CDM type.
  • a second receiving unit that receives first configuration information sent by the network device, where the first configuration information is related information configured by the terminal device for channel state information (CSI) reporting, and includes a configuration of a CSI measurement object Information, the configuration information of the measurement object is a selection function, and the selection function is used to select one of the default resource and the resource configured by the network device as a measurement object.
  • CSI channel state information
  • a third receiving unit configured to receive second configuration information sent by the network device, where the second configuration information is used to configure, for the terminal device, a first time-frequency resource in which the network device sends the channel state information reference signal
  • the first time-frequency resource belongs to a resource occupied by the information block for cell search.
  • a fourth receiving unit receives first instruction information sent by the network device, where the first instruction information indicates one of the at least one default candidate time-frequency resource as the first time-frequency resource.
  • time domain information is indicated by a bitmap
  • the bits in the bitmap correspond to the time units occupied by the information blocks used for cell search one by one
  • the bit is used to indicate whether the time unit corresponding to the bit includes a resource element (RE) in the first time-frequency resource.
  • RE resource element
  • time domain information is indicated by an integer value
  • the integer value indicates that a time unit among time units occupied by the information blocks used for cell search is the The time domain starting position of the first time-frequency resource, and the maximum value of the integer value is not less than the total number of time units occupied by the information blocks used for cell search.
  • time unit is an OFDM symbol or a time slot.
  • a determining unit that determines the first time-frequency resource according to an index of the SSB and a default configuration.
  • a last symbol of the first time-frequency resource is a previous symbol of an SSB identified by the index; or the first time The first symbol of the frequency resource is the first symbol after the SSB identified by the index; or the first symbol of the first time-frequency resource is the symbol occupied by the SSB identified by the index at least one.
  • a fifth receiving unit which receives third configuration information sent by the network device, the third configuration information includes information of a detection window of the information block used for cell search, and the information of the detection window includes at least one of the following Species: the length of the detection window, the period of the detection window, and the starting position of the detection window.
  • the detection window includes at least one transmission opportunity, the transmission opportunity being a possible starting time point of the information block for cell search, or the The transmission opportunity is a possible time period of the information block for cell search.
  • the third configuration information further includes configuration information of the transmission opportunity, or the configuration information of the transmission opportunity is default configuration information.
  • time domain information is indicated by an index of the transmission opportunity
  • time-frequency resource starting from the transmission opportunity identified by the index of the transmission opportunity includes the first A time-frequency resource
  • resource occupied by the transmission opportunity identified by the index of the transmission opportunity includes the first time-frequency resource
  • the first receiving unit transmits the index identified by the transmission opportunity. Opportunity to receive the information block for cell search, and receive the channel state reference signal on the first time-frequency resource.
  • the apparatus wherein the index of the SSB and the index of the transmission opportunity correspond one-to-one, and when the transmission opportunity belongs to a channel occupation time of the network device, the first receiving unit Receiving at the transmission opportunity an SSB identified by an index of the SSB corresponding to an index of the transmission opportunity.
  • a sixth receiving unit that receives fourth configuration information sent by the network device, where the fourth configuration information is used to configure at least one resource set for the terminal device, and the resource set includes at least one of the first time-frequency Resources.
  • a seventh receiving unit that receives second instruction information sent by the network device, where the second instruction information is used to instruct one of the at least one resource set to send the channel state information reference for the network device A collection of resources for signals.
  • a resource set configuration in the fourth configuration information does not include the following parameter: a unit of time used to indicate that the reference signal is sent relative to the A parameter indicating a time unit offset of a time unit where the information is located.

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Abstract

本发明提供了一种在非授权频段上参考信号的发送方法、装置和系统，该发送方法包括：网络设备在非授权频段向终端设备发送用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个同步信号/广播信道块(SSB)和信道状态信息参考信号(CSI-RS)。由此，可以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使新无线(NR)的小区保持信道占用权。

Description

非授权频段上参考信号的发送方法、装置和系统 技术领域
本发明涉及通信领域，特别涉及一种非授权频段上参考信号的发送方法、装置和系统。
背景技术
在第四代移动通信技术(4G)的版本13(Rel.13)的授权辅助接入(Licensed Assisted Access，LAA)技术中，终端设备通过授权频段的服务小区配置的发现参考信号(Discover Reference Signal，DRS)对非授权频段的小区进行时间同步及无线资源管理。5G的版本15(Rel.15)开始讨论基于新无线(New Radio，NR)的非授权频段的接入技术，并指出能够实现非协助能够独立工作的非授权频段网络，即终端设备能够直接接入工作在非授权频段的小区进行通信。因此，用于非授权频段的小区初始接入的信号或信道的设计变得尤为重要。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
发明人发现，非授权频段传输准则规定的信道占用带宽(Occupied Channel Bandwidth，OCB)需求为：传输信号需要满足80％以上的信道带宽占用率。而NR中用于初始接入的同步信号/广播信道块(SS/PBCH Block，SSB)仅占用20个资源块(Resource Block，RB)，不满足非授权频段最小接入带宽(20MHz)的80％。另外，NR的小区在一次SS/PBCH突发(SS/PBCH burst)中传输至少四个SSB，并且SSB之间在时域上可能会出现间隔，如图1和图2所示，这样一来，由于NR的小区不能始终占用该非授权频段的信道，从而有可能会失去信道占用机会。
为了解决上述问题中的至少一个或者解决其他类似问题，本发明实施例提供了一种非授权频段上的参考信号的发送方法、装置和系统，以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使NR的小区保持信道占用权。
根据本发明实施例的第一方面，提供了一种非授权频段上参考信号的发送方法，其中，所述方法包括：
网络设备在非授权频段向终端设备发送用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个同步信号/广播信道块(SSB)和信道状态信息参考信号(CSI-RS)。
根据本发明实施例的第二方面，提供了一种非授权频段上参考信号的接收方法，其中，所述方法包括：
终端设备接收网络设备在非授权频段发送的用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个同步信号/广播信道块(SSB)和信道状态信息参考信号(CSI-RS)。
根据本发明实施例的第三方面，提供了一种非授权频段上参考信号的发送装置，配置于网络设备，其中，所述装置包括：
第一发送单元，其在非授权频段向终端设备发送用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个同步信号/广播信道块(SSB)和信道状态信息参考信号(CSI-RS)。
根据本发明实施例的第四方面，提供了一种非授权频段上参考信号的接收装置，配置于终端设备，其中，所述装置包括：
接收单元，其接收网络设备在非授权频段发送的用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个同步信号/广播信道块(SSB)和信道状态信息参考信号(CSI-RS)。
根据本发明实施例的第五方面，提供了一种网络设备，其中，所述网络设备包括前述第三方面所述的装置。
根据本发明实施例的第六方面，提供了一种终端设备，其中，所述终端设备包括前述第四方面所述的装置。
根据本发明实施例的第七方面，提供了一种通信系统，所述通信系统包括前述第五方面所述的网络设备和前述第六方面所述的终端设备。
根据本发明实施例的其它方面，提供了一种计算机可读程序，其中当在网络设备中执行所述程序时，所述程序使得计算机在所述网络设备中执行前述第一方面所述的方法。
根据本发明实施例的其它方面，提供了一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在网络设备中执行前述第一方面所述的方法。
根据本发明实施例的其它方面，提供了一种计算机可读程序，其中当在终端设备中执行所述程序时，所述程序使得计算机在所述终端设备中执行前述第二方面所述的方法。
根据本发明实施例的其它方面，提供了一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在终端设备中执行前述第二方面所述的方法。
本发明实施例的有益效果在于：通过在非授权频段上用于小区搜索的信息块中传输SSB和CSI-RS，可以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使NR的小区保持信道占用权。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本发明实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
所包括的附图用来提供对本发明实施例的进一步的理解，其构成了说明书的一部分，用于例示本发明的实施方式，并与文字描述一起来阐释本发明的原理。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。在附图中：
图1是NR中子载波间隔为15kHz，SS/PBCH burst包含4个SSB时的示意图；
图2是NR中子载波间隔为30kHz，SS/PBCH burst包含4个SSB时的示意图；
图3是本发明实施例的通信系统的示意图；
图4是实施例1的非授权频段上参考信号发送方法的示意图；
图5是传输机会与SSB一一对应的示意图；
图6是激活的传输机会与SSB的对应关系的示意图；
图7是CSI-RS资源通过多个传输机会的索引标识的示意图；
图8是实施例2的非授权频段上参考信号接收方法的示意图；
图9是实施例3的非授权频段上参考信号发送装置的示意图；
图10是实施例4的非授权频段上参考信号接收装置的示意图；
图11是实施例5的网络设备的示意图；
图12是实施例6的终端设备的示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本发明实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本发明实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“所述”应理解为既包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本发明实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A，LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division  Multiple Access)、高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信系统中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及未来的5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本发明实施例中，术语“网络设备”例如是指通信系统中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备：基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本发明实施例中，术语“用户设备”(UE，User Equipment)例如是指通过网络设备接入通信网络并接收网络服务的设备，也可以称为“终端设备”(TE，Terminal Equipment)。终端设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
终端设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，终端设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、机器到机器(M2M，Machine to Machine)终端，等等。
以下通过示例对本发明实施例的场景进行说明，但本发明实施例不限于此。
图3是本发明实施例的通信系统的示意图，示意性说明了以终端设备和网络设备为例的情况，如图3所示，通信系统300可以包括：网络设备301和终端设备302。为简单起见，图3仅以一个终端设备为例进行说明。网络设备301例如为NR系统中的网络设备gNB。
在本发明实施例中，网络设备301和终端设备302之间可以进行现有的业务或者未来可实施的业务。例如，这些业务包括但不限于：增强的移动宽带(eMBB，enhanced Mobile Broadband)、大规模机器类型通信(mMTC，massive Machine Type Communication)和高可靠低时延通信(URLLC，Ultra-Reliable and Low-Latency Communication)，等等。
终端设备302可以向网络设备301发送数据，例如使用免授权传输方式。网络设备301可以接收一个或多个终端设备302发送的数据，并向终端设备302反馈信息(例如确认ACK/非确认NACK)信息，终端设备302根据反馈信息可以确认结束传输过程、或者还可以再进行新的数据传输，或者可以进行数据重传。
下面结合附图对本发明的各种实施方式进行说明。这些实施方式只是示例性的，不是对本发明的限制。
实施例1
本实施例提供了一种非授权频段上参考信号的发送方法，该方法应用于网络设备。图4是本实施例的非授权频段上参考信号发送方法的示意图，请参照图4，该方法包括：
步骤401：网络设备在非授权频段向终端设备发送用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个SSB和CSI-RS。
在本实施例中，上述“用于小区搜索的信息块”也可以称为发现信道(Discovery Channel，DCH)，除了包含上述至少一个SSB和CSI-RS以外，该DCH还可以包括至少一个承载控制信息的控制资源集合(COntrol REsource SET，CORESET)以及由控制资源集合承载的控制信息调度的物理下行共享信道(PDSCH)。
在本实施例中，“发现信道”只是一个称呼，本实施例不限于此，也可以将其称为初始接入信道或者类似于LTE将其称为发现参考信号，等等，为了方便说明，本实施例统一称为“用于小区搜索的信息块”。
本实施例通过在非授权频段上用于小区搜索的信息块中传输SSB和CSI-RS，可以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使NR的小区保持信道占用权。
在本实施例中，上述CSI-RS可以用于信道状态信息测量、无线资源管理、无线链路管理(如波束管理)、时频同步等中的一项或多项，本实施例不限于此。
在本实施例的一个实施方式中，上述信息块中CSI-RS的位置是默认的，也即，网络设备在上述用于小区搜索的信息块占用的资源中默认的资源上发送该CSI-RS。为了方便说明，称为默认的CSI-RS资源。
在本实施方式中，默认的CSI-RS资源可以包括以下信息的任意一种或任意组合：CSI-RS的频域密度、CSI-RS的时间位置、天线端口数、以及码分复用(CDM)的类型。例如，上述用于小区搜索的信息块中的CSI-RS为八个天线端口，频域密度为3，时间位置为该用于小区搜索的信息块占用的时间内的第1,3,5个符号或者为各SSB的下一个符号，CDM的类型为CDM4-FD2-TD2。上述默认的CSI-RS资源只是举例，本实施例不限于此，该默认的CSI-RS资源还可以包含其他内容。
在本实施方式中，网络设备还可以为终端设备进行CSI上报的配置，例如，该网络设备向终端设备发送第一配置信息，通过该第一配置信息为终端设备配置用于CSI上报的相关信息，这里，该相关信息中可以包含CSI的测量对象的配置信息，这里的测量对象可以是一个选择函数，该选择函数用于选择上述默认的CSI-RS资源或者网络设备配置的CSI-RS资源作为测量对象。
在现有的NR中，对于CSI上报的配置包含一个强制参数，即resourceForChannelMeasurement，该参数用于配置CSI的测量对象(也即CSI-RS)的物理资源，终端设备根据该参数确定发送CSI-RS的资源，进而测量该资源上的CSI-RS，并上报测量结果。在本实施方式中，由于发送CSI-RS的资源是默认的，因此高层不需要针对该CSI-RS的上报(也即CSI上报)配置相应的资源。因此，在本实施方式中，针对CSI上报的配置中关于CSI测量对象的配置可以通过上述选择函数来实现，通过该选择函数选择本实施例的默认的CSI-RS资源，例如表示为CSI-RS-ResourceInDCH，或者选择网络设备配置的CSI-RS资源，例如表示为CSI-ResourceConfig。
在本实施方式中，也可以不通过上述选择函数来选择测量对象，而是通过两个可 选项来指示测量对象，其中一个为本实施例的上述默认的CSI-RS资源，另一个为resourceForChannelMeasurement，这两个可选项中的至少一个为条件可选项，即，当另一个可选项缺省时该可选项出现。
在本实施例的另一个实施方式中，上述信息块中CSI-RS的位置是网络设备配置的。例如，网络设备可以向终端设备发送第二配置信息，通过该第二配置信息为该终端设备配置该网络设备发送上述CSI-RS的资源(称为第一时频资源)，该第一时频资源属于前述信息块占用的资源，也就是说，前述信息块占用的资源中包含了网络设备发送上述CSI-RS的资源。在本实施方式中，网络设备可以通过RRC(Radio Resource Control)配置信令来发送上述第二配置信息，但本实施例不限于此。
在本实施方式的一个例子中，网络设备为终端设备配置的上述第一时频资源是默认的。
例如，网络设备可以从多个默认的备选时频资源集合中选择至少一个默认的备选时频资源作为上述第一时频资源通知给终端设备。在这里，网络设备可以通过上述第二配置信息指示其从多个默认的备选时频资源集合中选择的上述默认的备选时频资源。终端设备接收到该第二配置信息后，即可确定CSI-RS资源的位置，进而在该位置接收CSI-RS。
再例如，网络设备可以通过上述第二配置信息指示从多个默认的备选时频资源集合中选择的上述至少一个默认的备选时频资源，此外，网络设备还通过其他信令来指示其中一个默认的备选时频资源作为上述第一时频资源通知给终端设备。在这里，除了上述第二配置信息，网络设备还可以向终端设备发送第一指示信息。通过上述第二配置信息指示上述至少一个默认的备选时频资源，并通过该第一指示信息指示该至少一个默认的备选时频资源中的一个作为上述第一时频资源。上述信令可以是MAC CE信令，也可以是DCI信令，或者两者的组合，或者其他信令，本实施例不限于此。
在本实施方式的另一个例子中，上述第二配置信息包括上述第一时频资源的时域信息。
在一个例子中，该第一时频资源的时域信息可以通过位图来指示。也就是说，网络设备通过该位图来指示发送CSI-RS的资源(第一时频资源)。终端设备根据该第二配置信息中的该位图获知发送上述CSI-RS的资源，也即该第一时频资源。
例如，该位图中的比特与上述用于小区搜索的信息块占用的时间单元一一对应， 每个比特用于指示与该比特对应的时间单元是否包含上述第一时频资源中的资源元素(RE)。如果包含，那么网络设备在这个比特对应的时间单元发送上述CSI-RS，即这个比特对应的时间单元中的部分或全部资源元素为发送CSI-RS的资源，相反，如果不包含，则这个比特对应的时间单元不发送CSI-RS，即这个比特对应的时间单元中不包含发送上述CSI-RS的资源。在这个例子中，该位图的长度(也即该位图所包含的比特的数量)不小于上述用于小区搜索的信息块占用的时间单元的数量。这里的时间单元可以是OFDM符号，也可以是时隙，或者其他定义的时间单位。
在另一个例子中，该第一时频资源的时域信息可以通过一个整数值来指示。也就是说，网络设备通过该整数值来指示发送CSI-RS的资源(第一时频资源)。终端设备根据该第二配置信息中的该整数值获知发送CSI-RS的资源，也即该第一时频资源。
例如，该整数值指示上述用于小区搜索的信息块占用的时间单元中的一个时间单元，以该时间作为上述第一时频资源的时域起始位置。该整数值的最大取值不小于上述用于小区搜索的信息块占用的时间单元的总数。同理，这里的时间单元可以是OFDM符号，也可以是时隙，或者其他定义的时间单位。
在又一个例子中，该第一时频资源的时域信息可以通过前述SSB的索引来指示。也就是说，网络设备通过该SSB的索引来指示发送CSI-RS的资源(第一时频资源)。终端设备根据该第二配置信息中的该SSB的索引和默认配置获知发送CSI-RS的资源，也即该第一时频资源。
例如，该默认配置可以是第一时频资源的最后一个符号是上述索引所标识的SSB的前一个符号，也就是说，该第一时频资源位于该SSB占用的资源之前。由此，在接收到该SSB的索引后，终端设备即可知道第一时频资源的位置。
再例如，该默认配置可以是第一时频资源的第一符号是上述索引所标识的SSB后的第一符号，也就是说，该第一时频资源位于该SSB占用的资源之后。由此，在接收到该SSB的索引后，终端设备即可知道第一时频资源的位置。
再例如，该默认配置还可以是第一时频资源的第一个符号为上述索引所标识的SSB占用的符号中的至少一个，也就是说，该第一时频资源与SSB的资源频分复用(FDM，Frequency-Division Multiplexing)发送SSB的时间资源。由此，在接收到该SSB的索引后，终端设备即可知道第一时频资源的位置。
以上三个例子只是举例说明，也可以使用SSB的索引通过其他方式指示第一时 频资源的时域信息。例如，该SSB的索引与该第一时频资源具有其他关联关系，根据一个SSB的索引，即可确定其所关联的第一时频资源。
在再一个例子中，该第一时频资源的时域信息可以通过传输机会的索引来指示。也就是说，网络设备通过传输机会的索引来指示发送CSI-RS的资源(第一时频资源)。终端设备根据该第二配置信息中的该传输机会的索引获知发送CSI-RS的资源，也即该第一时频资源。
在本实施例中，网络设备可以为终端设备配置用于对上述用于小区搜索的信息块进行检测的检测窗，例如，网络设备向终端设备发送第三配置信息，通过该第三配置信息为终端设备配置上述检测窗，该第三配置信息包含上述检测窗的信息，例如包括下面信息的至少一种：检测窗的长度、检测出的周期、检测窗的起始位置。
在本实施例中，上述检测窗包括至少一个传输机会，网络设备可以在该至少一个传输机会上发送上述用于小区搜索的信息块。该传输机会可以是上述用于小区搜索的信息块的可能的起始时间点，也可以是上述用于小区搜索的信息块的可能的时间段。
在本实施例中，网络设备可以根据先听后说(LBT)的检测结果决定从哪个传输机会开始发送所述用于小区搜索的信息块。例如，网络设备会在检测窗的第一个传输机会开始进行LBT检测，当LBT检测为空闲时，网络设备从该传输机会开始发送上述用于小区搜索的信息块；当LBT检测为忙碌时，网络设备放弃从该传输机会开始发送上述用于小区搜索的信息块，而对下一个传输机会进行LBT检测，直至最后一个传输机会，若仍检测为忙碌，那么网络设备放弃在该检测窗内传输上述用于小区搜索的信息块。在本实施例中，上述传输机会的配置信息可以是默认的，也可以是网络设备配置的，例如，网络设备通过上述第三配置信息配置上述传输机会，则该第三配置信息中还包括该传输机会的配置信息。
在这个例子中，该第一时频资源的时域信息可以通过上述传输机会的索引来指示。例如，以该传输机会的索引标识的传输机会为始点的时频资源中包含该第一时频资源，再例如，该传输机会的索引标识的传输机会占用的资源中包括该第一时频资源。终端设备根据第二配置信息中所包含的传输机会的索引可以获知可能发送CSI-RS的资源，也即该第一时频资源。
在这个例子中，上述传输机会的索引标识的传输机会属于上述网络设备的信道占用时间时，也就是说，网络设备在该传输机会占用了信道的情况下，该网络设备可以 在该索引标识的传输机会发送上述用于小区搜索的信息块，此时，上述CSI-RS在上述第一时频资源上发送。
在这个例子中，SSB的索引与传输机会的索引可以一一对应，当上述传输机会的索引标识的传输机会属于网络设备的信道占用时间时，也即LBT检测成功，网络设备在该传输机会占用了信道的情况下，网络设备在该传输机会发送与该传输机会的索引对应的SSB的索引标识的SSB。如图5所示，网络设备在传输机会Oca.2的LBT检测成功，Oca.2,Oca.3,Oca4，Oca5均属于网络设备的信道占用时间，因此网络设备在Oca.2,Oca.3,Oca4，Oca5发送与其各自对应的SSB2，SSB3，SSB4，SSB1。在图5中，DCH1～DCH4表示上述用于小区搜索的信息块。
在这个例子中，SSB的索引也可以不与传输机会的索引一一对应，而与上述用于小区搜索的信息块一一对应，网络设备可以在检测窗中的属于网络设备的信道占用时间的第一个传输机会发送最小索引值的SSB。如图6所示，传输机会Oca.2为属于网络设备的信道占用时间的第一个传输机会，网络设备可以在该传输机会Oca.2发送索引值最小的SSB，即SSB1。
在这个例子中，第一时频资源的时域信息可以通过至少一个传输机会的索引指示，当一个传输机会属于网络设备的信道占用时间时，网络设备在该传输机会发送上述用于小区搜索的信息块，该信息块中包含在被该传输机会的索引指示的第一时频资源上发送的CSI-RS。如图7所示，CSI-RS b的资源的时域信息通过传输机会1、3、5指示，网络设备在传输机会2时LBT检测信道为空闲状态，网络设备在传输机会2开始发送上述用于小区搜索的信息块，当需要测量CSI-RS b的终端设备在传输机会3检测到上述用于小区搜索的信息块包含的SSB后，确定该传输机会发送了上述用于小区搜索的信息块，则终端设备在相应的CSI-RS b的资源位置接收CSI-RS b。
在本实施方式中，上述第二配置信息可以是用户专用配置信息，即网络设备为其服务的终端设备分别配置上述第一时频资源；也可以是公共配置信息，即网络设备为其服务的所有终端设备或者一组终端设备(包括至少两个终端设备)配置相同的第一时频资源。这里可以是通过该公共配置信息配置至少一个CSI-RS资源集合。该CSI-RS资源集合中包括至少一个第一时频资源。并通过其他信令(例如MAC CE信令和/或DCI信令)指示该至少一个CSI-RS资源集合中的一个CSI-RS资源集合为发送上述CSI-RS的资源集合。
例如，网络设备通过高层信令配置至少一个CSI-RS资源集合，并通过MAC CE信令和/或DCI信令指示一个CSI-RS资源集合在上述用于小区搜索的信息块中发送，如果终端设备配置了与该CSI-RS资源集合中的至少一个上述第一时频资源相应的上报配置，那么终端设备将按照上报配置的内容对该第一时频资源的测量结果进行上报。
在本实施方式，网络设备还可以向终端设备发送第四配置信息，通过该第四配置信息为终端设备配置上述至少一个CSI-RS资源集合，该配置信息指示一个CSI-RS资源集合包括至少一个第一时频资源。
在本实施方式中，网络设备还可以向终端设备发送第二指示信息，通过该第二指示信息指示上述至少一个CSI-RS资源集合中的一个为该网络设备发送CSI-RS的资源(第一时频资源)的集合。
在本实施方式中，上述第四配置信息中的一个CSI-RS资源集合配置内不包含以下参数：用于指示发送了所述CSI-RS的时间单元相对于上述第二指示信息所在的时间单元的时间单元偏移量的参数。
在NR系统中，非周期CSI-RS资源集合配置中会配置信息参数aperiodicTriggeringOffset，该参数用于指示发送了资源集合中资源的时隙相对于指示CSI-RS发送的DCI所在的时隙的时隙偏移量，由于在非授权频段上的用于小区搜索的信息块的发送取决于LBT的检测结果，可能起始于检测窗内的任意一个传输机会，该参数将没有意义，因此，发送在用于小区搜索的信息块中的CSI-RS资源集合配置中将不配置aperiodicTriggeringOffset参数，终端设备认为MAC CE和/或DCI信令指示的CSI-RS资源集合在下一个DCH中的相应位置发送。
本实施例的方法使得网络设备和终端设备之间对CSI-RS的资源(如传输位置、映射图样等)达成共识，同时能够通过该方法的CSI-RS的发送使得用于小区搜索(例如初始接入及测量)的信息块满足信道占用带宽的需求，保持数据传输的连续性。
实施例2
本实施例提供了一种非授权频段上参考信号的接收方法，该方法应用于终端设备，是对应实施例1的方法的终端设备侧的处理，与实施例1相同的内容不再重复说明。图8是本实施例的非授权频段上参考信号的接收方法的示意图，请参照图8，该 方法包括：
步骤801：终端设备在非授权频段上接收网络设备发送的用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个SSB和CSI-RS。
在本实施例中，上述信道状态信息参考信号至少用于信道状态信息测量、无线资源管理、无线链路管理、时频同步其中之一。
在本实施例的一个实施方式中，上述CSI-RS的位置是默认的，也即网络设备在默认的资源上发送上述CSI-RS。为了方便说明，称为默认的CSI-RS资源。该默认的CSI-RS资源可以包括以下任意一种信息或任意信息的组合：所述信道状态信息参考信号的频域密度、所述信道状态信息参考信号的时间位置、天线端口数、CDM类型。终端设备在默认的资源上接收该CSI-RS。
在本实施方式中，终端设备还可以接收网络设备发送的第一配置信息，该第一配置信息可以是CSI上报的配置信息，根据该第一配置信息，终端设备可以确认测量对象是本实施例的该默认的CSI-RS资源还是网络设备配置的CSI-RS资源。关于该第一配置信息，已经在实施例1中做了说明，此处不再赘述。
在本实施例的另一个实施方式中，上述CSI-RS的位置是网络设备配置的。在本实施方式中，终端设备还可以接收网络设备发送的第二配置信息，根据该第二配置信息获得网络设备发送CSI-RS的资源(称为第一时频资源)，进而在该CSI-RS的资源接收CSI-RS。关于该第二配置信息，已经在实施例1中做了说明，此处不再赘述。
在一个例子中，第二配置信息指示了网络设备从多个默认的备选时频资源的集合中选择的至少一个默认的备选时频资源，该至少一个默认的备选时频作为前述第一时频资源，终端设备在该至少一个默认的备选时频资源上接收CSI-RS。
在另一个例子中，第二配置信息指示了网络设备从多个默认的备选时频资源的集合中选择的至少一个默认的备选时频资源，网络设备还通过其他信令指示所述至少一个默认的备选时频资源中的一个作为上述第一时频资源，例如网络设备向终端设备发送第一指示信息，通过该第一指示信息进行上述指示，则终端设备还可以接收网络设备发送的该指示信息(称为第一指示信息)，在该指示信息指示的默认的备选时频资源上接收CSI-RS。
在又一个例子中，第二配置信息包括CSI-RS的资源(上述第一时频资源)的时域信息。
关于该时域信息的指示方式，包括以下几种。
第一种，通过位图指示。
在这种指示方式中，位图中的比特与上述用于小区搜索的信息块占用的时间单元一一对应，一个比特用于指示与该比特对应的时间单元是否包含第一时频资源中的资源元素(RE)。由此，终端设备根据该位图中的比特可以确认CSI-RS的资源，进而在该CSI-RS的资源上接收CSI-RS。
第二种，通过整数值指示。
在这种指示方式中，整数值指示上述用于小区搜索的信息块占用的时间单元中的一个时间单元为上述第一时频资源的时域起始位置，该整数值的最大取值不小于上述用于小区搜索的信息块占用的时间单元的总数。也就是说，通过该整数值指示了CSI-RS的资源的起始位置。由此，终端设备根据该整数值也可以确认CSI-RS的资源，进而在该CSI-RS的资源上接收CSI-RS。
第三种，通过SSB的索引指示。
在这种指示方式中，CSI-RS的资源与SSB的索引相关，他们之间的关系可以是默认配置，终端设备根据该SSB的索引和默认配置可以确认CSI-RS的资源。例如，默认配置可以是CSI-RS的资源的最后一个符号为上述索引所标识的SSB的前一个符号；或者是，CSI-RS的资源的第一个符号为上述索引所标识的SSB后的第一个符号；或者是，CSI-RS的资源的第一个符号为上述索引所标识的SSB占用的符号中的至少一个。其中前两种方式，CSI-RS和SSB在时间上错开，也即时分复用；后一种方式，CSI-RS和SSB在频率上错开，也即频分复用。
第四种，通过传输机会的索引指示。
在这种指示方式中，CSI-RS的资源与传输机会有关，这里的传输机会可以是网络设备配置的，也可以是默认的。
例如，网络设备可以向终端设备发送第三配置信息，通过该第三配置信息为终端设备配置用于小区搜索的信息块的检测窗，终端设备相应的可以接收该第三配置信息，获得该检测窗。该检测窗的信息可以包括以下任意一项或多项：检测窗的长度、检测窗的周期、检测窗的起始位置，但不限于此。此外，该检测窗包含至少一个上述传输机会，该传输机会可以是上述用于小区搜索的信息块的可能的起始时间点，也可以是上述用于小区搜索的信息块的可能的时间段。如果传输机会是网络设备配置的， 则该第三配置信息还可以包含该传输机会的配置信息，终端设备根据该第三配置信息可以获知上述用于小区搜索的信息块的传输机会。
在这种指示方式中，可以通过传输机会的索引来指示CSI-RS的资源，例如指示CSI-RS的资源的时域位置。例如，该CSI-RS的资源可以包含于以该传输机会的索引标识的传输机会为始点的时频资源中。再例如，该CSI-RS的资源可以包含于该传输机会的索引标识的传输机会占用的资源中。由此，终端设备根据配置的该传输机会的索引可以获知CSI-RS的资源。
在一个例子中，该传输机会的索引标识的传输机会属于网络设备的信道占用时间时，也即，网络设备在该传输机会占用了信道的情况下，网络设备可以在该传输机会发送上述用于小区搜索的信息块，并在该传输机会的索引指示的上述CSI-RS的资源上发送上述CSI-RS。终端设备可以在该CSI-RS的资源上接收该CSI-RS。
在一个例子中，上述SSB的索引与该传输机会的索引一一对应，当该传输机会属于网络设备的信道占用时间时，也即，网络设备在该传输机会占用了信道的情况下，网络设备可以在该传输机会发送与该传输机会的索引对应的SSB的索引标识的SSB。由此，终端设备可以在相应的传输机会接收SSB。
在一个例子中，网络设备可以在一个检测窗中的属于网络设备的信道占用时间的第一个传输机会发送最小索引值的所述SSB。由此，终端设备可以在相应的传输机会接收SSB。
在本实施例中，第二配置信息可以是用户专用配置信息，也可以是公共配置信息。如果是公共配置信息，网络设备还可以向终端设备发送第四配置信息，通过该第四配置信息为终端设备配置至少一个CSI-RS资源集合，该至少一个CSI-RS资源集合中则包括前述CSI-RS的资源。此外，网络设备还可以向终端设备发送第二指示信息，通过该第二指示信息指示上述至少一个CSI-RS资源集合中的一个CSI-RS资源集合作为网络设备发送上述CSI-RS的资源的集合。由此，终端设备可以接收该第四配置信息和该第二指示信息，从而获知上述至少一个CSI-RS资源集合以及网络设备发送上述CSI-RS的资源的集合。
此外，在本实施例中，上述第四配置信息不包括下面的参数：用于指示发送了CSI-RS的时间单元相对于该第二指示信息所在的时间单元的时间单元偏移量的参数。由此，终端设备可以认为上述第二指示信息所指示的CSI-RS的资源集合在下一 个(或其他)用于小区搜索的信息块中。
本实施例的方法使得网络设备和终端设备之间对CSI-RS的资源(如传输位置、映射图样等)达成共识，通过在非授权频段上用于小区搜索的信息块中传输SSB和CSI-RS，可以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使NR的小区保持信道占用权。
实施例3
本实施例提供了一种非授权频段上参考信号的发送装置，配置于网络设备，由于该装置解决问题的原理与实施例1的方法类似，因此其具体的实施可以参照实施例1的方法的实施，内容相同之处不再重复说明。
图9是本实施例的非授权频段上参考信号的发送装置的示意图，如图9所示，本实施例的该非授权频段上参考信号的发送装置900可以包括：
第一发送单元901，其在非授权频段向终端设备发送用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个SSB和CSI-RS。
在本实施例中，所述CSI-RS至少用于信道状态信息测量、无线资源管理、无线链路管理、时频同步其中之一。
在本实施例的一个实施方式中，第一发送单元901可以在所述用于小区搜索的信息块占用的资源中默认的资源上发送所述CSI-RS。也即，CSI-RS的资源是默认的，简称为默认的CSI-RS资源。
在本实施方式中，所述默认的CSI-RS资源可以包括以下任意一种信息或任意信息的组合：所述CSI-RS的频域密度、所述CSI-RS的时间位置、天线端口数、CDM类型。
在本实施方式中，如图9所示，该装置900还可以包括：
第二发送单元902，其向终端设备发送第一配置信息，所述第一配置信息用于为所述终端设备配置用于信道状态信息(CSI)上报的相关信息，其中包含CSI测量对象的配置信息，所述测量对象的配置信息为选择函数，所述选择函数用于选择所述默认的CSI-RS资源和所述网络设备配置的CSI-RS资源其中之一作为测量对象。
在本实施方式中，如图9所示，该装置900还可以包括：
第三发送单元903，其向所述终端设备发送第二配置信息，所述第二配置信息用 于为所述终端设备配置该网络设备发送所述CSI-RS的资源(第一时频资源)，所述第一时频资源属于所述用于小区搜索的信息块占用的资源。也即，CSI-RS的资源是网络设备配置的。
在本实施方式的一个例子中，所述第二配置信息指示了所述网络设备从多个默认的备选时频资源的集合中选择至少一个默认的备选时频资源作为所述第一时频资源。
在这个例子中，如图9所示，该装置900还可以包括：
第四发送单元904，其向所述终端设备发送第一指示信息，所述第一指示信息指示所述至少一个默认的备选时频资源中的一个作为所述第一时频资源。
在本实施方式的另一个例子中，所述第二配置信息包括所述第一时频资源的时域信息。
例如，上述时域信息可以通过位图指示，所述位图中的比特与所述用于小区搜索的信息块占用的时间单元一一对应，一个所述比特用于指示与所述比特对应的所述时间单元是否包含所述第一时频资源中的资源元素(RE)。上述时间单元可以是OFDM符号或者时隙。
再例如，上述时域信息可以通过一个整数值指示，所述整数值指示所述用于小区搜索的信息块占用的时间单元中的一个时间单元为所述第一时频资源的时域起始位置，所述整数值的最大取值不小于所述用于小区搜索的信息块占用的时间单元的总数。上述时间单元可以是OFDM符号或者时隙。
再例如，上述时域信息可以通过所述SSB的索引指示，所述终端设备根据所述SSB的索引以及默认配置确定所述第一时频资源。默认配置可以是所述第一时频资源的最后一个符号为所述索引所标识的SSB的前一个符号；或者，所述第一时频资源的第一个符号为所述索引所标识的SSB后的第一个符号；或者，所述第一时频资源的第一个符号为所述索引所标识的SSB占用的符号中的至少一个。
再例如，上述时域信息可以通过传输机会的索引指示。
在这个例子中，如图9所示，该装置900还可以包括：
第五发送单元905，其向所述终端设备发送第三配置信息，所述第三配置信息包括所述用于小区搜索的信息块的检测窗的信息，所述检测窗的信息包括以下至少一种：所述检测窗的长度，所述检测窗的周期，所述检测窗的起始位置。
在这个例子中，所述检测窗中包括至少一个传输机会，所述传输机会为所述用于 小区搜索的信息块的可能的起始时间点，或者，所述传输机会为所述用于小区搜索的信息块的可能的时间段。
在这个例子中，所述第三配置信息还可以包括所述传输机会的配置信息，或者，所述传输机会的配置信息可以为默认配置信息。
在这个例子中，所述时域信息可以通过一个所述传输机会的索引指示，例如，以所述传输机会的索引标识的传输机会为始点的时频资源中包括所述第一时频资源，或者，所述传输机会的索引标识的传输机会占用的资源中包括所述第一时频资源。
在这个例子中，所述索引标识的传输机会属于所述网络设备的信道占用时间时，所述第一发送单元901可以在所述索引标识的传输机会发送所述用于小区搜索的信息块，所述CSI-RS在所述第一时频资源上发送。
在这个例子中，所述SSB的索引与所述传输机会的索引可以一一对应，所述传输机会属于所述网络设备的信道占用时间时，所述第一发送单元901可以在所述传输机会发送与所述传输机会的索引对应的所述SSB的索引标识的SSB。
在这个例子中，所述第一发送单元901也可以在一个所述检测窗中的属于所述网络设备的信道占用时间的第一个所述传输机会发送最小索引值的所述SSB。
在本实施例中，上述第二配置信息可以是用户专用配置信息或者为公共配置信息。
在本实施例中，如图9所示，该装置900还可以包括：
第六发送单元906，其向所述终端设备发送第四配置信息，所述第四配置信息用于为所述终端设备配置至少一个CSI-RS资源集合，所述CSI-RS资源集合包括至少一个所述第一时频资源。
在本实施例中，如图9所示，该装置900还可以包括：
第七发送单元907，其向所述终端设备发送第二指示信息，所述第二指示信息用于指示所述至少一个CSI-RS资源集合中的一个CSI-RS资源集合为所述网络设备发送所述CSI-RS的资源的集合。
在本实施例中，所述第四配置信息中的一个CSI-RS资源集合配置内不包含以下参数：用于指示发送了所述参考信号的时间单元相对于所述第二指示信息所在的时间单元的时间单元偏移量的参数。
本实施例的装置使得网络设备和终端设备之间对CSI-RS的资源(如传输位置、 映射图样等)达成共识，通过在非授权频段上用于小区搜索的信息块中传输SSB和CSI-RS，可以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使NR的小区保持信道占用权。
实施例4
本实施例提供了一种非授权频段上参考信号的接收装置，配置于终端设备，该装置解决问题的原理与实施例2的方法类似，其具体的实施可以参考实施例2，内容相同之处不再重复说明。
图10是本实施例的非授权频段上参考信号的接收装置的示意图，如图10所示，该接收装置1000包括：
第一接收单元1001，其在非授权频段上接收网络设备发送的用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个同步信号/广播信道块(SSB)和信道状态信息参考信号(CSI-RS)。
在本实施例中，所述CSI-RS至少用于信道状态信息测量、无线资源管理、无线链路管理、时频同步其中之一。
在本实施例的一个实施方式中，所述第一接收单元1001在所述用于小区搜索的信息块中默认的资源上接收所述CSI-RS，也即该CSI-RS的资源是默认的，称为默认的CSI-RS资源。
在该实施方式中，所述默认的CSI-RS资源可以包括以下任意一种信息或任意信息的组合：所述CSI-RS的频域密度、所述CSI-RS的时间位置、天线端口数、CDM类型。
在本实施方式中，如图10所示，所述装置1000还可以包括：
第二接收单元1002，其接收所述网络设备发送的第一配置信息，所述第一配置信息为所述终端设备配置用于信道状态信息(CSI)上报的相关信息，其中包含CSI测量对象的配置信息，所述测量对象的配置信息为选择函数，所述选择函数用于选择所述默认的CSI-RS资源和所述网络设备配置的CSI-RS资源其中之一作为测量对象。
在本实施例的另一个实施方式中，如图10所示，所述装置1000还可以包括：
第三接收单元1003，其接收所述网络设备发送的第二配置信息，所述第二配置信息用于为所述终端设备配置用于发送所述CSI-RS的资源(第一时频资源)，所述第 一时频资源属于所述用于小区搜索的信息块占用的资源。
在本实施方式中，所述第二配置信息指示了所述网络设备从多个默认的备选时频资源的集合中选择至少一个默认的备选时频资源作为所述第一时频资源。
在本实施方式中，如图10所示，所述装置1000还可以包括：
第四接收单元1004，其接收所述网络设备发送的第一指示信息，所述第一指示信息指示所述至少一个默认的备选时频资源中的一个作为所述第一时频资源。
在本实施方式中，所述第二配置信息可以包括所述第一时频资源的时域信息。
在一个例子中，所述时域信息可以通过位图指示，所述位图中的比特与所述用于小区搜索的信息块占用的时间单元一一对应，一个所述比特用于指示与所述比特对应的所述时间单元是否包含所述第一时频资源中的资源元素(RE)。
在另一个例子中，所述时域信息可以通过一个整数值指示，所述整数值指示所述用于小区搜索的信息块占用的时间单元中的一个时间单元为所述第一时频资源的时域起始位置，所述整数值的最大取值不小于所述用于小区搜索的信息块占用的时间单元的总数。
在前述两个例子中，所述时间单元可以为OFDM符号或者时隙。
在另一个例子中，所述时域信息可以通过所述SSB的索引指示，如图10所示，所述装置1000还可以包括：
确定单元1005，其根据所述SSB的索引以及默认配置确定所述第一时频资源。
这里的默认配置可以为所述第一时频资源的最后一个符号为所述索引所标识的SSB的前一个符号；或者为，所述第一时频资源的第一个符号为所述索引所标识的SSB后的第一个符号；或者为，所述第一时频资源的第一个符号为所述索引所标识的SSB占用的符号中的至少一个。
在另一个例子中，所述时域信息可以通过传输机会的索引指示。如图10所示，所述装置1000还可以包括：
第五接收单元1006，其接收所述网络设备发送的第三配置信息，所述第三配置信息包括所述用于小区搜索的信息块的检测窗的信息，所述检测窗的信息包括以下至少一种：所述检测窗的长度，所述检测窗的周期，所述检测窗的起始位置。
在这个例子中，所述检测窗中包括至少一个传输机会，所述传输机会为所述用于小区搜索的信息块的可能的起始时间点，或者，所述传输机会为所述用于小区搜索的 信息块的可能的时间段。
在这个例子中，所述第三配置信息还可以包括所述传输机会的配置信息，或者，所述传输机会的配置信息为默认配置信息。
在这个例子中，所述时域信息通过一个所述传输机会的索引指示，以所述传输机会的索引标识的传输机会为始点的时频资源中包括所述第一时频资源，或者，所述传输机会的索引标识的传输机会占用的资源中包括所述第一时频资源。
在这个例子中，所述索引标识的传输机会属于所述网络设备的信道占用时间时，所述第一接收单元1001可以在所述索引标识的传输机会接收所述用于小区搜索的信息块，在所述第一时频资源上接收所述CSI-RS。
在这个例子中，所述SSB的索引与所述传输机会的索引一一对应，所述传输机会属于所述网络设备的信道占用时间时，所述第一接收单元1001可以在所述传输机会接收与所述传输机会的索引对应的所述SSB的索引标识的SSB。
在这个例子中，所述第一接收单元1001也可以在一个所述检测窗中的属于所述网络设备的信道占用时间的第一个所述传输机会接收最小索引值的所述SSB。
在本实施例中，所述第二配置信息为用户专用配置信息或者为公共配置信息。
在本实施例中，如图10所示，所述装置1000还可以包括：
第六接收单元1007，其接收所述网络设备发送的第四配置信息，所述第四配置信息用于为所述终端设备配置至少一个CSI-RS资源集合，所述CSI-RS资源集合包括至少一个所述第一时频资源。
在本实施例中，如图10所示，所述装置1000还可以包括：
第七接收单元1008，其接收所述网络设备发送的第二指示信息，所述第二指示信息用于指示所述至少一个CSI-RS资源集合中的一个CSI-RS资源集合为所述网络设备发送所述CSI-RS的资源的集合。
在这个例子中，所述第四配置信息中的一个CSI-RS资源集合配置内不包含以下参数：用于指示发送了所述参考信号的时间单元相对于所述第二指示信息所在的时间单元的时间单元偏移量的参数。
本实施例的装置使得网络设备和终端设备之间对CSI-RS的资源(如传输位置、映射图样等)达成共识，通过在非授权频段上用于小区搜索的信息块中传输SSB和CSI-RS，可以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使NR的 小区保持信道占用权。
实施例5
本发明实施例还提供了一种网络设备，其中，该网络设备包括实施例3所述的装置。
图11是本发明实施例的网络设备的一个实施方式的构成示意图。如图11所示，网络设备1100可以包括：中央处理器(CPU)1101和存储器1102；存储器1102耦合到中央处理器1101。其中该存储器1102可存储各种数据；此外还存储信息处理的程序，并且在中央处理器1101的控制下执行该程序，以接收终端设备发送的各种信息、并且向终端设备发送各种信息。
在一个实施方式中，实施例3所述的装置的功能可以被集成到中央处理器1101中，由中央处理器1101实现实施例3所述的装置的功能，其中关于实施例3所述的装置的功能被合并于此，在此不再赘述。
在另一个实施方式中，实施例3所述的装置可以与中央处理器1101分开配置，例如可以将该实施例3所述的装置为与中央处理器1101连接的芯片，通过中央处理器1101的控制来实现该实施例3所述的装置的功能。
此外，如图11所示，网络设备1100还可以包括：收发机1103和天线1104等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备1100也并不是必须要包括图11中所示的所有部件；此外，网络设备1100还可以包括图11中没有示出的部件，可以参考现有技术。
通过本实施例的网络设备，通过在非授权频段上用于小区搜索的信息块中传输SSB和CSI-RS，可以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使NR的小区保持信道占用权。
实施例6
本发明实施例还提供了一种终端设备，其中，该终端设备包括实施例4所述的装置。
图12是本发明实施例的终端设备的示意图。如图12所示，该终端设备1200可以包括中央处理器1201和存储器1202；存储器1202耦合到中央处理器1201。值得 注意的是，该图是示例性的；还可以使用其它类型的结构，来补充或代替该结构，以实现电信功能或其它功能。
在一个实施方式中，实施例4所述的装置的功能可以被集成到中央处理器1201中，由中央处理器1201实现实施例4所述的装置的功能，其中关于实施例4所述的装置的功能被合并于此，在此不再赘述。
在另一个实施方式中，实施例4所述的装置可以与中央处理器1201分开配置，例如可以将该实施例4所述的装置配置为与中央处理器1201连接的芯片，通过中央处理器1201的控制来实现该实施例4所述的装置的功能。
如图12所示，该终端设备1200还可以包括：通信模块1203、输入单元1204、音频处理单元1205、显示器1206、电源1207。值得注意的是，终端设备1200也并不是必须要包括图12中所示的所有部件；此外，终端设备1200还可以包括图12中没有示出的部件，可以参考现有技术。
如图12所示，中央处理器1201有时也称为控制器或操作控件，可以包括微处理器或其它处理器装置和/或逻辑装置，该中央处理器1201接收输入并控制终端设备1200的各个部件的操作。
其中，存储器1202，例如可以是缓存器、闪存、硬驱、可移动介质、易失性存储器、非易失性存储器或其它合适装置中的一种或更多种。可储存上述与配置有关的信息，此外还可存储执行有关信息的程序。并且中央处理器1201可执行该存储器1202存储的该程序，以实现信息存储或处理等。其它部件的功能与现有类似，此处不再赘述。终端设备1200的各部件可以通过专用硬件、固件、软件或其结合来实现，而不偏离本发明的范围。
通过本实施例的终端设备，通过在非授权频段上用于小区搜索的信息块中传输SSB和CSI-RS，可以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使NR的小区保持信道占用权。
实施例7
本发明实施例还提供一种通信系统，该通信系统包括网络设备和终端设备，网络设备例如为实施例5所述的网络设备1100，终端设备例如为实施例6所述的终端设备1200。
在本实施例中，该终端设备例如是gNB服务的UE，其除了包含实施例4所述的装置的功能以外，还包括终端设备的常规组成和功能，如实施例6所述，在此不再赘述。
在本实施例中，该网络设备例如可以是NR中的gNB，其除了包含实施例3所述的装置的功能以外，还包括网络设备的常规组成和功能，如实施例5所述，在此不再赘述。
通过本实施例的通信系统，通过在非授权频段上用于小区搜索的信息块中传输SSB和CSI-RS，可以满足非授权频段传输准则规定的信道占用带宽需求，和/或，使NR的小区保持信道占用权。
本发明实施例还提供一种计算机可读程序，其中当在网络设备中执行所述程序时，所述程序使得计算机在所述网络设备中执行实施例1所述的方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在网络设备中执行实施例1所述的方法。
本发明实施例还提供一种计算机可读程序，其中当在终端设备中执行所述程序时，所述程序使得计算机在所述终端设备中执行实施例2所述的方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在终端设备中执行实施例2所述的方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。逻辑部件例如现场可编程逻辑部件、微处理器、计算机中使用的处理器等。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本发明实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图中所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本发明所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。
关于包括以上实施例的实施方式，还公开下述的附记：
1、一种非授权频段上参考信号的接收装置，配置于终端设备，其中，所述装置包括：
第一接收单元，其在非授权频段上接收网络设备发送的用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个同步信号/广播信道块(SSB)和信道状态信息参考信号(CSI-RS)。
2、根据附记1所述的装置，其中，所述信道状态信息参考信号至少用于信道状态信息测量、无线资源管理、无线链路管理、时频同步其中之一。
3、根据附记1所述的装置，其中，所述第一接收单元在所述用于小区搜索的信息块占用的资源中默认的资源上接收所述信道状态信息参考信号。
4、根据附记3所述的装置，其中，所述默认的资源包括以下任意一种信息或任意信息的组合：所述信道状态信息参考信号的频域密度、所述信道状态信息参考信号的时间位置、天线端口数、CDM类型。
5、根据附记3所述的装置，其中，所述装置还包括：
第二接收单元，其接收所述网络设备发送的第一配置信息，所述第一配置信息为所述终端设备配置用于信道状态信息(CSI)上报的相关信息，其中包含CSI测量对象的配置信息，所述测量对象的配置信息为选择函数，所述选择函数用于选择所述默认的资源和所述网络设备配置的资源其中之一作为测量对象。
6、根据附记1所述的装置，其中，所述装置还包括：
第三接收单元，其接收所述网络设备发送的第二配置信息，所述第二配置信息用于为所述终端设备配置所述网络设备发送所述信道状态信息参考信号的第一时频资源，所述第一时频资源属于所述用于小区搜索的信息块占用的资源。
7、根据附记6所述的装置，其中，所述第二配置信息指示了所述网络设备从多个默认的备选时频资源的集合中选择至少一个默认的备选时频资源作为所述第一时频资源。
8、根据附记7所述的装置，其中，所述装置还包括：
第四接收单元，其接收所述网络设备发送的第一指示信息，所述第一指示信息指示所述至少一个默认的备选时频资源中的一个作为所述第一时频资源。
9、根据附记6所述的装置，其中，所述第二配置信息包括所述第一时频资源的时域信息。
10、根据附记9所述的装置，其中，所述时域信息通过位图指示，所述位图中的比特与所述用于小区搜索的信息块占用的时间单元一一对应，一个所述比特用于指示与所述比特对应的所述时间单元是否包含所述第一时频资源中的资源元素(RE)。
11、根据附记9所述的装置，其中，所述时域信息通过一个整数值指示，所述整数值指示所述用于小区搜索的信息块占用的时间单元中的一个时间单元为所述第一时频资源的时域起始位置，所述整数值的最大取值不小于所述用于小区搜索的信息块占用的时间单元的总数。
12、根据附记10或11所述的装置，其中，所述时间单元为OFDM符号或者时隙。
13、根据附记9所述的装置，其中，所述时域信息通过所述SSB的索引指示，所述装置还包括：
确定单元，其根据所述SSB的索引以及默认配置确定所述第一时频资源。
14、根据附记13所述的装置，其中，所述默认配置为所述第一时频资源的最后一个符号为所述索引所标识的SSB的前一个符号；或者为，所述第一时频资源的第一个符号为所述索引所标识的SSB后的第一个符号；或者为，所述第一时频资源的第一个符号为所述索引所标识的SSB占用的符号中的至少一个。
15、根据附记9所述的装置，其中，所述装置还包括：
第五接收单元，其接收所述网络设备发送的第三配置信息，所述第三配置信息包括所述用于小区搜索的信息块的检测窗的信息，所述检测窗的信息包括以下至少一种：所述检测窗的长度，所述检测窗的周期，所述检测窗的起始位置。
16、根据附记15所述的装置，其中，所述检测窗中包括至少一个传输机会，所述传输机会为所述用于小区搜索的信息块的可能的起始时间点，或者，所述传输机会为所述用于小区搜索的信息块的可能的时间段。
17、根据附记16所述的装置，其中，所述第三配置信息还包括所述传输机会的配置信息，或者，所述传输机会的配置信息为默认配置信息。
18、根据附记16所述的装置，其中，所述时域信息通过一个所述传输机会的索引指示，以所述传输机会的索引标识的传输机会为始点的时频资源中包括所述第一时频资源，或者，所述传输机会的索引标识的传输机会占用的资源中包括所述第一时频资源。
19、根据附记18所述的装置，其中，所述传输机会的索引标识的传输机会属于所述网络设备的信道占用时间时，所述第一接收单元在所述传输机会的索引标识的传输机会接收所述用于小区搜索的信息块，在所述第一时频资源上接收所述信道状态参考信号。
20、根据附记18所述的装置，其中，所述SSB的索引与所述传输机会的索引一一对应，所述传输机会属于所述网络设备的信道占用时间时，所述第一接收单元在所述传输机会接收与所述传输机会的索引对应的所述SSB的索引标识的SSB。
21、根据附记18所述的装置，其中，所述第一接收单元在所述检测窗中的属于所述网络设备的信道占用时间的第一个所述传输机会接收最小索引值的所述SSB。
22、根据附记6-21任一项所述的装置，其中，所述第二配置信息为用户专用配置信息或者为公共配置信息。
23、根据附记6-21任一项所述的装置，其中，所述装置还包括：
第六接收单元，其接收所述网络设备发送的第四配置信息，所述第四配置信息用于为所述终端设备配置至少一个资源集合，所述资源集合包括至少一个所述第一时频资源。
24、根据附记23所述的装置，其中，所述装置还包括：
第七接收单元，其接收所述网络设备发送的第二指示信息，所述第二指示信息用于指示所述至少一个资源集合中的一个资源集合为所述网络设备发送所述信道状态信息参考信号的资源的集合。
25、根据附记24任一项所述的装置，其中，所述第四配置信息中的一个资源集合配置内不包含以下参数：用于指示发送了所述参考信号的时间单元相对于所述第二指示信息所在的时间单元的时间单元偏移量的参数。

Claims (20)

  1. 一种非授权频段上参考信号的发送装置，配置于网络设备，其中，所述装置包括：
    第一发送单元，其在非授权频段向终端设备发送用于小区搜索的信息块，所述用于小区搜索的信息块包含至少一个同步信号/广播信道块(SSB)和信道状态信息参考信号(CSI-RS)。
  2. 根据权利要求1所述的装置，其中，所述信道状态信息参考信号至少用于信道状态信息测量、无线资源管理、无线链路管理、时频同步其中之一。
  3. 根据权利要求1所述的装置，其中，所述第一发送单元在所述用于小区搜索的信息块占用的资源中默认的资源上发送所述信道状态信息参考信号。
  4. 根据权利要求3所述的装置，其中，所述默认的资源包括以下任意一种信息或任意信息的组合：所述信道状态信息参考信号的频域密度、所述信道状态信息参考信号的时间位置、天线端口数、CDM类型。
  5. 根据权利要求3所述的装置，其中，所述装置还包括：
    第二发送单元，其向终端设备发送第一配置信息，所述第一配置信息用于为所述终端设备配置用于信道状态信息(CSI)上报的相关信息，其中包含CSI测量对象的配置信息，所述测量对象的配置信息为选择函数，所述选择函数用于选择所述默认的资源和所述网络设备配置的资源其中之一作为测量对象。
  6. 根据权利要求1所述的装置，其中，所述装置还包括：
    第三发送单元，其向所述终端设备发送第二配置信息，所述第二配置信息用于为所述终端设备配置所述网络设备发送所述信道状态信息参考信号的第一时频资源，所述第一时频资源属于所述用于小区搜索的信息块占用的资源。
  7. 根据权利要求6所述的装置，其中，所述第二配置信息指示了所述网络设备从多个默认的备选时频资源的集合中选择至少一个默认的备选时频资源作为所述第一时频资源。
  8. 根据权利要求7所述的装置，其中，所述装置还包括：
    第四发送单元，其向所述终端设备发送第一指示信息，所述第一指示信息指示所述至少一个默认的备选时频资源中的一个作为所述第一时频资源。
  9. 根据权利要求6所述的装置，其中，所述第二配置信息包括所述第一时频资源的时域信息。
  10. 根据权利要求9所述的装置，其中，所述时域信息通过位图指示，所述位图中的比特与所述用于小区搜索的信息块占用的时间单元一一对应，一个所述比特用于指示与所述比特对应的所述时间单元是否包含所述第一时频资源中的资源元素(RE)。
  11. 根据权利要求9所述的装置，其中，所述时域信息通过一个整数值指示，所述整数值指示所述用于小区搜索的信息块占用的时间单元中的一个时间单元为所述第一时频资源的时域起始位置，所述整数值的最大取值不小于所述用于小区搜索的信息块占用的时间单元的总数。
  12. 根据权利要求9所述的装置，其中，所述时域信息通过所述SSB的索引指示，所述终端设备根据所述SSB的索引以及默认配置确定所述第一时频资源。
  13. 根据权利要求12所述的装置，其中，所述默认配置为所述第一时频资源的最后一个符号为所述索引所标识的SSB的前一个符号；或者为，所述第一时频资源的第一个符号为所述索引所标识的SSB后的第一个符号；或者为，所述第一时频资源的第一个符号为所述索引所标识的SSB占用的符号中的至少一个。
  14. 根据权利要求9所述的装置，其中，所述装置还包括：
    第五发送单元，其向所述终端设备发送第三配置信息，所述第三配置信息包括所述用于小区搜索的信息块的检测窗的信息，所述检测窗的信息包括以下至少一种：所述检测窗的长度，所述检测窗的周期，所述检测窗的起始位置。
  15. 根据权利要求14所述的装置，其中，所述检测窗中包括至少一个传输机会，所述传输机会为所述用于小区搜索的信息块的可能的起始时间点，或者，所述传输机会为所述用于小区搜索的信息块的可能的时间段。
  16. 根据权利要求15所述的装置，其中，所述第三配置信息还包括所述传输机会的配置信息，或者，所述传输机会的配置信息为默认配置信息。
  17. 根据权利要求15所述的装置，其中，所述时域信息通过一个所述传输机会的索引指示，以所述传输机会的索引标识的传输机会为始点的时频资源中包括所述第一时频资源，或者，所述传输机会的索引标识的传输机会占用的资源中包括所述第一时频资源。
  18. 根据权利要求17所述的装置，其中，所述传输机会的索引标识的传输机会属于所述网络设备的信道占用时间时，所述网络设备在所述传输机会的索引标识的传输机会发送所述用于小区搜索的信息块，所述信道状态参考信号在所述第一时频资源上发送。
  19. 根据权利要求17所述的装置，其中，所述SSB的索引与所述传输机会的索引一一对应，所述传输机会属于所述网络设备的信道占用时间时，所述网络设备在所述传输机会发送与所述传输机会的索引对应的所述SSB的索引标识的SSB。
  20. 根据权利要求17所述的装置，其中，所述网络设备在所述检测窗中的属于所述网络设备的信道占用时间的第一个所述传输机会发送最小索引值的所述SSB。
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