WO2020087543A1 - 一种信号的发送方法、接收方法、发送装置、接收装置和通信系统 - Google Patents

一种信号的发送方法、接收方法、发送装置、接收装置和通信系统 Download PDF

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Publication number
WO2020087543A1
WO2020087543A1 PCT/CN2018/113839 CN2018113839W WO2020087543A1 WO 2020087543 A1 WO2020087543 A1 WO 2020087543A1 CN 2018113839 W CN2018113839 W CN 2018113839W WO 2020087543 A1 WO2020087543 A1 WO 2020087543A1
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Prior art keywords
information
information block
time
block
candidate
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PCT/CN2018/113839
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English (en)
French (fr)
Inventor
张国玉
蒋琴艳
贾美艺
张磊
王昕�
Original Assignee
富士通株式会社
张国玉
蒋琴艳
贾美艺
张磊
王昕�
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 富士通株式会社, 张国玉, 蒋琴艳, 贾美艺, 张磊, 王昕� filed Critical 富士通株式会社
Priority to KR1020217012611A priority Critical patent/KR102499121B1/ko
Priority to PCT/CN2018/113839 priority patent/WO2020087543A1/zh
Priority to CN201880098933.5A priority patent/CN112889328A/zh
Priority to JP2021523079A priority patent/JP2022505980A/ja
Priority to EP18938584.2A priority patent/EP3876622A4/en
Publication of WO2020087543A1 publication Critical patent/WO2020087543A1/zh
Priority to US17/241,325 priority patent/US12035320B2/en
Priority to JP2022208829A priority patent/JP2023026511A/ja

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0073—Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0076—Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the present application relates to the communication field, and in particular, to a signal transmission method, a reception method, a transmission device, a reception device, and a communication system.
  • a synchronization signal / physical broadcast channel block may have a primary synchronization signal (PSS: Primary Synchronization Signal), a secondary synchronization signal (SSS: Secondary Synchronization Signal), and a physical Layer broadcast channel (PBCH: PhysicalBroadcastCHannel).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH PhysicalBroadcastCHannel
  • the network device can send multiple SSBs through beams in different directions, thereby increasing the cell coverage angle.
  • the terminal device After receiving the SSB, the terminal device can use the SSB to perform time-frequency synchronization in the initial access phase, and can also perform radio resource management (RRM: Radio Resource Management) and / or radio link monitoring (RLM: Radios Link Monitoring).
  • RRM Radio Resource Management
  • RLM Radio Link Monitoring
  • each SSB may be sent at a default resource in the time interval, where the one time interval is, for example, a half frame, and the length of the time interval is, for example, 5 milliseconds ).
  • FIG. 1 is a schematic diagram of the default transmission resources of each SSB in a half-frame.
  • the subcarrier spacing is 30kHz and the carrier frequency is less than 3GHz.
  • the network device sends a total of 4 SSBs in one field, that is, SSB1, SSB2, SSB3, SSB4, of which 1, 2 , 3, and 4 are the index values of each SSB; the initial transmission resources of each SSB are the symbol of slot 0 in the half frame, the symbol of slot 0, the symbol of slot 8, and the symbol of slot 1 2.
  • the symbol of slot 1 is 8; and, the network device sends each SSB in the order of increasing index value.
  • FIG. 1 there is a default correspondence between the SSB index value and the slot index and symbol index.
  • the terminal device blindly detects the SSB, and when an SSB is detected, the SSB index value is used to obtain the slot index and symbol index according to the subcarrier interval and the default time-frequency resource position of the SSB index value.
  • the PBCH obtains the system frame number, so that the terminal equipment can obtain downlink time synchronization.
  • LBT Listen Before Talk
  • the detection result is that data can be sent when the channel is idle. If the channel is busy, the sending device needs to detect again until the channel is idle before sending data using the unlicensed frequency band.
  • FIG. 2 is a schematic diagram of SSB transmission in the case of LBT. As shown in Figure 2, if the channel is busy before the default transmission resource of an SSB, that is, LBT fails, then the SSB will not be sent at the default time. When LBT succeeds, the transmission resources after LBT can be used to send SSB.
  • the cell has 4 SSBs, namely, SSB1, SSB2, SSB3, and SSB4.
  • the sending resources 201, 202, 203, and 204 in FIG. 2 are the default sending resources of SSB1, SSB2, SSB3, and SSB4.
  • LBT fails before sending resources 201, 202. Therefore, sending resources 201, 202 cannot be used to send SSB1, SSB2; LBT before sending resource 203 Success, therefore, the transmission resources 203, 204 can be used to transmit SSB.
  • the inventor of the present application found that on the one hand, if the transmission resources 203, 204 of FIG. 2 are used to send SSB3, SSB4, then SSB1 and SSB2 cannot be sent, that is, the SSB is not sent completely, which will cause SSB1 to be sent.
  • Embodiments of the present application provide a signal transmission method, a reception method, a transmission device, a reception device, and a communication system, indicating the transmission resource of the information block through the indication information, and thus, even the default between the information block index and the transmission resource In the case where the corresponding relationship of will be changed, the transmission resource corresponding to the information block can also be clarified, thereby facilitating the downlink synchronization of the terminal device.
  • a sending device which is provided in a network device, and the sending device includes:
  • a sending unit which sends instruction information for instructing one of the at least one information block sent by the network device within a time interval to send one of the at least two candidate resources in the one time interval .
  • a signal receiving apparatus which is provided in a terminal device, and the receiving apparatus includes: a receiving unit that receives a signal sent by a network device to instruct the network device within a time interval
  • One information block sent transmits indication information of one candidate resource among the at least two candidate resources in the one time interval; and a calculation unit that obtains time synchronization according to the indication information.
  • a communication system includes a terminal device and a network device.
  • the network device includes the sending device described in the first aspect of the foregoing embodiment.
  • the terminal device includes: The receiving device described in the second aspect of the above embodiment.
  • the beneficial effect of the embodiment of the present application is to indicate the transmission resource of the information block through the indication information, thereby, even if the default correspondence between the information block index and the transmission resource is to be changed, the information block can be clarified The corresponding sending resource.
  • FIG. 1 is a schematic diagram of the default transmission resources of each SSB in a half frame
  • Figure 2 is a schematic diagram of SSB transmission in the case of LBT
  • FIG. 3 is a schematic diagram of the communication system of the present application.
  • FIG. 7 is a schematic diagram of a predetermined mapping relationship between information blocks
  • 9 is a schematic diagram showing indication information using the relative relationship between SSB and other signals or channels;
  • 10 is a schematic diagram of first time-frequency resources and candidate resources
  • 11 is another schematic diagram of the first time-frequency resource and the candidate resource
  • FIG. 12 is a schematic diagram of a signal receiving method according to Embodiment 2 of the present application.
  • FIG. 13 is a schematic diagram of a signal transmission device of Embodiment 3.
  • FIG. 14 is a schematic diagram of a signal receiving apparatus of Embodiment 4.
  • 15 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a network device according to an embodiment of the present invention.
  • the terms “first”, “second”, etc. are used to distinguish different elements in terms of titles, but do not mean 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”, etc. 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 message 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 message access High-Speed Packet Access
  • the communication between devices in the communication system can be performed according to any stage of the communication protocol, for example, it can 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 that are currently known or will be developed in the future.
  • Network device refers to, for example, a device that connects a terminal device to a communication network and provides services for the terminal device in a communication system.
  • Network equipment may include but not limited to the following equipment: 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), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB) and 5G base station (gNB), etc., and may also include a remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low power node (such as femto, pico, etc.).
  • NodeB Node B
  • eNodeB or eNB evolved Node B
  • gNB 5G base station
  • 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 specific 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” (UE, User Equipment) or “terminal equipment” (TE, Terminal Equipment) refers to, for example, a device that accesses a communication network through a network device and receives network services.
  • the terminal device may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, and so on.
  • terminal devices may include but are not limited to the following devices: cellular phones (Cellular), personal digital assistants (PDA, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, Cordless phones, smart phones, smart watches, digital cameras, etc.
  • Cellular Cellular
  • PDA Personal Digital Assistant
  • wireless modems wireless communication devices
  • handheld devices machine-type communication devices
  • laptop computers Cordless phones
  • smart phones smart watches, digital cameras, etc.
  • 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: machine type communication (MTC, Machine Type Communication) terminal, Vehicle-mounted communication terminals, device-to-device (D2D, Device to Device) terminals, machine-to-machine (M2M, Machine to Machine) terminals, and so on.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • FIG. 3 is a schematic diagram of the communication system of the present application, schematically illustrating the case of taking terminal devices and network devices as examples.
  • the communication system 300 may include network devices 301 and terminal devices 302 (for simplicity, ( Figure 3 uses only one terminal device as an example).
  • the network device 301 and the terminal device 302 can perform existing services or services that can be implemented in the future.
  • these services include but are not limited to: enhanced mobile broadband (eMBB, enhanced Mobile Broadband), large-scale machine type communication (mMTC, massive Machine Type Communication), and highly reliable low-latency communication (URLLC, Ultra-Reliable and Low- Latency Communication), etc.
  • eMBB enhanced mobile broadband
  • mMTC large-scale machine type communication
  • URLLC Ultra-Reliable and Low- Latency Communication
  • the terminal device 302 may send data to the network device 301, for example, using an authorized or unauthorized transmission method.
  • the terminal device 301 can receive data sent by one or more terminal devices 102 and feed back information to the terminal device 302, such as ACK / non-acknowledgement information, etc.
  • the terminal device 302 can confirm the end of the transmission process based on the feedback information, or can New data transmission is performed, or data retransmission can be performed.
  • the network device 301 may send information related to system information to the terminal device 302, and the terminal device 302 detects the received information to achieve downlink synchronization and communicate with the network device 301 establish connection.
  • the following uses the network device in the communication system as the sending end and the terminal device as the receiving end as an example for description, but the present application is not limited thereto, and the sending end and / or the receiving end may also be other devices.
  • the present application is not only applicable to signal transmission between network equipment and terminal equipment, but also applicable to signal transmission between two terminal equipment.
  • Embodiment 1 of the present application provides a signal transmission method, which can be executed by a network device.
  • FIG. 4 is a schematic diagram of a signal transmission method. As shown in FIG. 4, the method includes:
  • Step 401 The network device sends an indication for instructing one of the at least one information block sent by the network device within a time interval to send one of the at least two candidate resources in the one time interval information.
  • the transmission resource of the information block is indicated by the instruction information, so that even if the one-to-one correspondence between the information block index and the transmission resource will be changed, the resource of the transmission information block can be clearly defined, Furthermore, it is convenient for the terminal equipment to perform downlink synchronization.
  • one time interval may be, for example, a half frame, and the length of the one time interval may be, for example, 5 milliseconds (ms).
  • one information block may include at least a synchronization signal / physical broadcast channel block (SS / PBCH Block, SSB).
  • the information block may be an SSB; or, the information block may have other information besides the SSB.
  • the other information may be the control layer set 0 and / or the physical layer shared channel carrying the system information block 1 (SIB1: System Information Block 1).
  • an information block group including a predetermined number of information blocks that the network device needs to send in the one time interval of a cell is called an information block group of the cell.
  • the predetermined number is a default value, or a value determined by subcarrier spacing and / or carrier frequency.
  • the information block group may have 4 information blocks, and the index values of the SSBs in the information blocks are different from each other.
  • the index value of each information block may be equal to the index value of the SSB in the information block, or may not be equal.
  • the network device may use an unlicensed frequency band to communicate. For example, the network device performs LBT detection before sending the information block in the one time interval, and after the LBT is successful, starts to send the information block group.
  • the network device completely transmits the information block group or does not send the information block within a time interval, that is, after the LBT is successful, all the information blocks in the information block group are sent.
  • Information blocks do not send information blocks.
  • the information block group of a cell contains 4 information blocks. After the LBT succeeds, all 4 information blocks in the information block group are sent; if the remaining resources cannot completely send the 4 information blocks within this time interval, The network device does not send the information block within this time interval.
  • the LBT detection always fails. When the remaining resources in the one time interval cannot completely send the four information blocks, the network device stops the LBT detection and does not send the information blocks in the one time interval.
  • the network device sends part of the information block group or does not send the information block at a time interval: for example, the information block group of a cell contains 4 information blocks. After the LBT succeeds, the one The remaining resources in the time interval can only send one information block, and the network device sends only one information block in the information block group (for example, the first information block, or the last information block, etc.), if the network device is in that one If the LBT detection fails in the time interval, the information block is not sent in the time interval.
  • the network device also sends control information, which is used to indicate that the network device did not send the information blocks in the information block group within the one time interval, or instruct the terminal device not to report
  • the measurement result in the one time interval is one of radio resource management (RRM), radio link measurement, and channel state measurement.
  • the control information may be a common control information, that is, all terminal devices served by the cell may receive the common control information, or a group of common control information, that is, only a group of terminal devices in the terminal devices served by the cell may Receive the control message.
  • the network device sends the information block, which can increase the possibility of the terminal device accessing, and informs the terminal device of the incompleteness within the one time interval through control information Send information blocks to effectively avoid measurement errors of connected terminal devices.
  • each information block in a time interval, may have at least two candidate resources for sending the information block, and the information block may be on one of the at least two candidate resources Is sent, wherein the number of candidate resources and the time-frequency position of each information block may be preset.
  • Each information block can have at least two candidate resources. Therefore, in the case where some candidate resources cannot be used to send the information block due to LBT failure, it is still possible to send the information block using other candidate resources. Therefore, It can increase the possibility of sending the information block, and then increase the possibility of completely sending all the information blocks in the cell; and, by indicating information to indicate the actual candidate resource for sending the information block, it can be clear where the information block is.
  • Candidate resources are sent to facilitate the acquisition of time-frequency information of the candidate resources.
  • the indication information may be carried in the information block sent by the network device, and thus, the network device sends the indication information when sending the information block, that is, step 401 through the network The device sends information blocks to achieve.
  • the indication information may also be carried in other information, that is, the network device performs step 401 in addition to the action of sending the information block to send the indication information.
  • the candidate resources and indication information in this embodiment will be further described below.
  • each information block may have at least two candidate resources.
  • the time-domain intervals between the candidate start symbols may be equal or unequal, and each candidate start symbol may be orthogonal frequency division multiplexing (OFDM) with a predetermined index value in a time interval symbol.
  • the unit of the time domain interval may be an integer number of OFDM symbols, an integer number of subframes, milliseconds, or the information block.
  • the indication information includes: identification information of one candidate start symbol of at least two candidate start symbols of the first information block in the at least one information block.
  • the first information block may refer to the information block with the smallest index value in the information block group.
  • the identification information of the candidate start symbol may be the number of the time domain interval between the candidate start symbol and the first candidate start symbol,
  • the candidate start symbol can be determined among all the symbols of the one time interval Index value; or, when the identification information of the candidate start symbol is an orthogonal frequency division multiplexing (OFDM) symbol with a predetermined index value in a time interval, the identification information of the candidate start symbol may be the candidate start symbol The sequence number in all candidate start symbols.
  • OFDM orthogonal frequency division multiplexing
  • FIG. 5 is a schematic diagram of candidate start symbols in the first embodiment. As shown in FIG. 5, there are 4 information blocks in the information block group, namely, information block 0, information block 1, information block 2, and information block 3. Among them, the information block 0 is the first information block.
  • information block 0 has 5 candidate start symbols, which are start symbols 0 to 4, respectively.
  • the network device can perform LBT detection before each candidate start symbol.
  • the network device sends the first information block from the candidate start symbol, and the indication information is set to Start to send the identification information of the candidate start symbol of the first information block.
  • the network device may continue to send other information blocks in the order of the index value of the information block.
  • the order of the index value of the information block is, for example, that the index value is small. To large order.
  • the network device detects that the LBT is successful before the candidate start symbol 2, so the network device sends information block 0 to information block 3 in order from the candidate start symbol 2, and the candidate start symbol 2
  • the identification information is used as instruction information.
  • each information block there may be a predetermined mapping relationship between each information block, that is, the relative position between the start symbols of different information blocks has a predetermined value, therefore, when the terminal device detects a message After the block, time synchronization is obtained through the identification information of the candidate start symbol sent by the network device and the predetermined mapping relationship between the information blocks.
  • the predetermined mapping relationship may be set by the default correspondence between each information block and the transmission resource shown in FIG. 1, that is, in the default correspondence, each information block and The transmission resources correspond, so that the relative positional relationship between the transmission resources of each information block is also set.
  • the identification information of the candidate start symbol is the number of time-domain intervals between the candidate start symbol and the first candidate start symbol.
  • the size of the time-domain interval between adjacent candidate start symbols is 4 symbols.
  • each candidate start symbol is shown in FIG. 6, for example, five candidates within a time interval
  • the start symbols are defined as the index values in the one time interval are 4, 8, 16, 20, 31 (ie, the symbols 4, 8 in slot 0 and the symbols 2 in slot 1 in the time interval, 6.
  • the terminal device may determine the index value of the first symbol of the resource that actually sends the information block 0 based on the sequence number 0 is 4 , And determine the index value of the OFDM symbol of the first symbol of information block 3 and the index of the time slot where the symbol is located according to the default relationship between information block 3 and information block 0, to obtain downlink synchronization.
  • the number of symbols between resources of different information blocks may be directly set, thereby representing the predetermined mapping relationship.
  • FIG. 7 is a schematic diagram of the predetermined mapping relationship of each information block.
  • the resources of information block 0 and information block 1 are continuous, and there is no interval symbol in between; information block 1 and The resources of information block 2 are separated by 4 symbols; the resources of information block 2 and information block 3 are continuous, and there is no space symbol between the two.
  • the information block group starts from the candidate start symbol 1 and transmits the information in the information block group according to a predetermined number of symbols between the information blocks
  • the identification information of the candidate start symbol sent by the network device and the number of symbols between the resources of different information blocks are synchronized in time.
  • the specific method can refer to the previous example, and will not be repeated here.
  • each information block may be transmitted on a preset time-frequency resource.
  • an integer number (eg, greater than one) of time-frequency resources for sending information blocks may be predefined, and each time-frequency resource has a one-to-one correspondence with time.
  • the start symbols of the first N time-frequency resources may be set as candidate start symbols, that is, N candidate start symbols are preset, and N is a natural number greater than 1.
  • the information blocks in the information block group are transmitted in sequence from a candidate start symbol to the number of consecutive information blocks starting from the candidate start symbol on the time-frequency resource.
  • FIG. 8 is a schematic diagram of preset time-frequency resources. As shown in FIG. 8, 80 to 87 are the preset 8 time-frequency resources for sending information blocks within a time interval, and candidate start symbols 0 to 4 correspond to the start symbols of time-frequency resources 80 to 84, respectively. , Where the candidate start symbol 0 is, for example, the symbol 4 of time slot 0 in the time interval.
  • the network device can start to send the information block group from the candidate start symbol 1, that is, the 4 information blocks 0, 1, 2, and 3 in the information block group are in time-frequency resources 81, 82, 83, and 84, respectively.
  • the indication information may be carried in the main system information block (MIB: Master Information Block) of the PBCH carried in the information block sent by the network device or in the system message block 1 (SIB1: System Information) Block1).
  • MIB Master Information Block
  • SIB1 System Information Block
  • the indication information may also be expressed as a relative relationship between the SSB and other signals or channels in the information block sent by the network device, and the relative relationship may be, for example, a time-domain or frequency-domain mapping relationship. That is, when the SSB has a different relative relationship with other signals or channels, it can represent the identification information of different candidate start symbols.
  • the other signal or channel may be a channel or signal included in the information block, for example, a control resource set 0 in the information block, or a channel state reference signal (CSI-RS: Channel State Information Reference).
  • CSI-RS Channel State Information Reference
  • FIG. 9 is a schematic diagram showing indication information using the relative relationship between SSB and other signals or channels.
  • the load of the PBCH may include first indication information for indicating time-frequency resources of the control resource set 0 (CORESET) 0.
  • CORESET control resource set 0
  • the PBCH load in an information block indicates the frequency domain minimum resource block index of the control resource set 0 is greater than the frequency domain in the resource block occupied by the SSB (for example, SSB0) in the information block
  • the maximum value of the index indicates that the information block is sent in the candidate resource 1 (for example, the start symbol is the candidate start symbol 1); when the maximum value of the frequency domain index of the control resource set 0 indicated by the PBCH load in an information block is less than
  • the minimum value of the frequency domain index in the resource block occupied by the SSB (for example, SSB3) in the information block indicates that the information block is sent in the candidate resource 2 (for example, the start symbol is the candidate start symbol 1).
  • the terminal device determines the candidate resource through the relative relationship between the control resource set 0 and the SSB, and then determines the transmission symbol and slot index of the received information block to obtain downlink synchronization.
  • each information block is transmitted in the order of information block 2, information block 3, information block 0, and information block 1.
  • each information block is transmitted in the order of information block 0, information block 1, information block 2, and information block 3.
  • a time interval may include an integer number of preset first time-frequency resources for transmitting information blocks, and each first time-frequency resource may have one or more symbols.
  • the number of the integer preset first time-frequency resources in a time interval may be greater than the number of information blocks in the information block group of the cell.
  • the at least two candidate resources are at least two first time-frequency resources for sending the information block identified by the same index value among the integer number of first time-frequency resources, that is, have the same index value
  • the identified information block (for example, information block 2) may be transmitted on at least two first time-frequency resources, and the at least two time-frequency resources are at least two candidate resources for the information block (for example, information block 2).
  • the indication information includes: identification information of at least two candidate resources of a candidate resource that actually sends the information block.
  • FIG. 10 is a schematic diagram of first time-frequency resources and candidate resources. As shown in FIG. 10, each candidate resource corresponds to a time-frequency resource. For each information block (for example, any one of information block 0 to information block 3), there are two candidate resources (that is, candidate resource 1 and candidate resource 2), wherein the four candidate resources 1 in FIG. 10 can be Candidate resource group 1 and candidate resource 2 may constitute candidate resource group 2.
  • the network device sends each information block in the order of information block 2, information block 3, information block 0, and information block 1, and the indication information of each information block includes Sending identification information of the candidate resource of the information block in at least two candidate resources of the information block.
  • the indication information is the identification information "1" of candidate resource 1 in the two candidate resources of information block 3 (ie, candidate resource 1 and candidate resource 2); for example, for information block 0, the indication information The information is the identification information "2" of the candidate resource 2 among the two candidate resources of the information block 0 (ie, candidate resource 1 and candidate resource 2).
  • the terminal device can obtain downlink synchronization through the correspondence between the candidate transmission position and time. For example, the terminal device detects the information block 1 of FIG. 10, and the indication information indicates that the information block is sent to the candidate resource 2 of the candidate resources. The terminal device obtains the starting symbol and the slot number of the information block 1 of the candidate resource 2. Downlink synchronization.
  • the indication information may be carried in the main system information block (MIB: Master Information Block) of the PBCH in the information block sent by the network device or in the system message block 1 (SIB1: SystemInformationBlock1); or, the indication information can also be expressed as the relative relationship between the SSB and other signals or channels in the information block sent by the network device, that is, when the SSB is different from other signals or channels
  • the relative relationship may represent the identification information of different candidate resources.
  • the indication information may include: identification information of the first time-frequency resource corresponding to a candidate resource that actually sends the information block in the integer number of first time-frequency resources.
  • FIG. 11 is another schematic diagram of the first time-frequency resource and the candidate resource.
  • eight first time-frequency resources are preset in the one time interval, and their identification information is 0 to 7, respectively, and each candidate resource corresponds to one time-frequency resource.
  • the first time-frequency resource 0 4 is a candidate resource of information block 0
  • the first time-frequency Resources 1, 5 are candidate resources for information block 1
  • first time-frequency resources 2, 6 are candidate resources for information block 2
  • first time-frequency resources 3, 7 are candidate resources for information block 3.
  • the network device sends each information block in the order of information block 2, information block 3, information block 0, and information block 1, and the indication information of each information block includes The identification information of the first time-frequency resource corresponding to the candidate resource of the information block is sent.
  • the indication information is the identification information "3" of the first time-frequency resource 3 sending the information block 3; for another example, for the information block 0, the indication information is the first time-frequency resource 4 sending the information block 0 The identification information "4".
  • the terminal device can obtain downlink synchronization through the correspondence between the identification information of the first time-frequency resource and time; in addition, the terminal device can also use the identification information of the first time-frequency resource and the information block of the cell The number of information blocks in the group is modulo divided to obtain the index value of the received information block.
  • the terminal device detects a certain information block transmitted as shown in FIG. 11, and obtains the candidate resource for transmitting the information block through the DMRS and / or PBCH load as the first time-frequency resource 5, and the terminal device uses the first time-frequency resource Resource 5 obtains the corresponding symbol and slot index to obtain downlink synchronization.
  • the indication information may be a demodulation reference signal (DMRS: demodulation reference signal) sequence and / or a physical broadcast channel (PBCH) of a physical broadcast channel (PBCH) in the information block Indicated by the load.
  • DMRS demodulation reference signal
  • PBCH physical broadcast channel
  • the indication information can be indicated by DMRS or PBCH; when the identification information of the first time-frequency resource is greater than 8, it can be indicated by both DMRS and PBCH The instructions.
  • the transmission resource of the information block is indicated by the instruction information, and therefore, even in the case where the default correspondence between the information block index and the transmission resource is to be changed, the transmission corresponding to the information block can be clarified Resources, which facilitates the terminal device to perform downlink synchronization.
  • Embodiment 2 provides a signal receiving method, which is executed by a terminal device.
  • FIG. 12 is a schematic diagram of a signal receiving method according to Embodiment 2 of the present application. As shown in FIG. 12, the method includes:
  • Step 1201 The terminal device receives a candidate resource sent by the network device to indicate that the network device is sending and an information block received by the terminal device sends one candidate resource of at least two candidate resources in a time interval Instructions;
  • Step 1202 The terminal device obtains time synchronization according to the instruction information.
  • the information block includes at least a synchronization signal / physical broadcast channel block (SS / PBCH Block, SSB).
  • SS / PBCH Block SSB
  • the network device sends at least one information block in a time interval, and the at least one information block includes the one information block received by the terminal device.
  • each information block in the at least one information block may have at least two candidate resources.
  • the indication information is used to indicate that the candidate start symbol of the first information block of the at least one information block is one candidate start symbol of at least two candidate start symbols, for example, the indication The information includes: identification information of the one candidate start symbol.
  • the adjacent candidate start symbols have equal time-domain intervals, and the unit of the time-domain interval is one of orthogonal frequency division multiplexing (OFDM) symbols, subframes, milliseconds, and the information block.
  • OFDM orthogonal frequency division multiplexing
  • the terminal device obtains time synchronization through the indication information, the size of the time domain interval, and the index value of the one information block.
  • the identification information of the one candidate start symbol includes: identification information of the OFDM symbol with a predetermined index value in the one time interval.
  • the terminal device obtains time synchronization by using the index value as the indication information and the one information block.
  • the network device may start from the one candidate start symbol and sequentially transmit the at least one information block on the time-frequency resource predetermined for sending the information block within the one time interval, in this case
  • the terminal device also needs to further combine the relationship between the predetermined time-frequency resource and time to obtain time synchronization.
  • the network device may also start from the one candidate start symbol and send the at least one information block according to a predetermined mapping relationship between the at least one information block.
  • the terminal device needs to further Time synchronization is obtained in conjunction with the predetermined mapping relationship.
  • the indication information is carried in the main system information block (MIB: Master Information Block) of the PBCH or in the system message block 1 (SIB1: System Information Block 1), or the indication information It is expressed as the relative time-domain or frequency-domain mapping relationship between the SSB in the information block and other signals or channels.
  • MIB Master Information Block
  • SIB1 System Information Block 1
  • one time interval includes an integer number of first time-frequency resources for sending information blocks, and the at least two candidate resources are the integer number of first time-frequency resources for sending the same one At least two of the first time-frequency resources of the information block identified by the index value.
  • the terminal device may obtain time synchronization according to the correspondence between the indication information and time.
  • the indication information may include: identification information of the one candidate resource in the at least two candidate resources.
  • the terminal device may determine the first time-frequency resource to send the information block according to the identification information of the candidate resource and the received index value of the information block, thereby determining the starting symbol and the first time-frequency resource Slot number, to obtain downlink synchronization.
  • the indication information is carried in the main system information block (MIB: Master Information Block) of the PBCH or in the system message block 1 (SIB1: System Information Block 1), or the indication information is expressed as The relative time-domain or frequency-domain mapping relationship between the SSB in the information block and other signals or channels.
  • MIB Master Information Block
  • SIB1 System Information Block 1
  • the indication information may also include: identification information of the first time-frequency resource corresponding to one candidate resource in the integer number of first time-frequency resources.
  • the terminal device may determine the first time-frequency resource to send the information block according to the identification information of the first time-frequency resource, thereby determining the start symbol and slot number of the first time-frequency resource, thereby obtaining downlink synchronization .
  • the terminal device can also obtain the index value of the received signal block according to the indication information and the number of information blocks included in the cell information block group, for example, the two are modulo divided to obtain the information block The index value of.
  • the indication information may be indicated by the DMRS sequence and / or PBCH load of the PBCH of the one information block.
  • the transmission resource of the information block is indicated by the instruction information, and therefore, even in the case where the default correspondence between the information block index and the transmission resource is to be changed, the transmission corresponding to the information block can be clarified Resources, which facilitates the terminal device to perform downlink synchronization.
  • the third embodiment provides a signal transmission device, which is installed in a network device. Since the principle of the device to solve the problem is similar to the method of Embodiment 1, the specific implementation can refer to the implementation of the method of Embodiment 1, and the same content will not be repeated.
  • FIG. 13 is a schematic diagram of a signal sending apparatus of Embodiment 3. As shown in FIG. 13, the apparatus 1300 includes:
  • a sending unit 1301 which sends an instruction for instructing one of the at least one information block sent by the network device within a time interval to send one of the at least two candidate resources in the one time interval information.
  • the information block includes at least a synchronization signal / physical broadcast channel block (SS / PBCH Block, SSB).
  • SS / PBCH Block SSB
  • the indication information includes: identification information of one candidate start symbol of at least two candidate start symbols of the first information block in the at least one information block.
  • the time domain interval of the adjacent candidate start symbols is equal, and the unit of the time domain interval is one of OFDM symbol, subframe, millisecond, and the information block.
  • the candidate start symbol is an OFDM symbol with a predetermined index value in the one time interval.
  • the network device sends at least one information block in the one time interval in the following manner: the network device starts from the one candidate resource and is scheduled for sending in the one time interval
  • the at least one information block is sequentially transmitted on the time-frequency resources of the information block.
  • the network device sends at least one information block in the one time interval in the following manner: the network device starts from the candidate start symbol and follows the predetermined between the at least one information block The mapping relationship sends the at least one information block.
  • the one time interval includes an integer number of first time-frequency resources, the first time-frequency resource is used to send the information block, and the at least two candidate resources are the integer number of first times At least two of the first time-frequency resources in the frequency resource for sending the information block identified by the same index value.
  • the indication information includes: identification information of the one candidate resource in the at least two candidate resources.
  • the indication information includes: identification information of the first time-frequency resource corresponding to the one candidate resource in the integer number of first time-frequency resources.
  • the indication information is carried in the main system information block (MIB: Master Information Block) of the PBCH in the one information block or in the system message block 1 (SIB1: System Information Block 1) .
  • MIB Master Information Block
  • SIB1 System Information Block 1
  • the indication information is expressed as a relative time-domain or frequency-domain mapping relationship between the SSB in the information block and other signals or channels.
  • the indication information is indicated by the DMRS sequence and / or PBCH load of the PBCH in the one information block.
  • the transmission resource of the information block is indicated by the instruction information, and therefore, even in the case where the default correspondence between the information block index and the transmission resource is to be changed, the transmission corresponding to the information block can be clarified Resources, which facilitates the terminal device to perform downlink synchronization.
  • Embodiment 4 provides a signal receiving device, which is provided in a terminal device. Since the principle of the device to solve the problem is similar to the method of Embodiment 2, the specific implementation can refer to the implementation of the method of Embodiment 2, and the same content will not be repeated.
  • Fig. 14 is a schematic diagram of a signal receiving apparatus of the fourth embodiment. As shown in FIG. 14, the device 1400 includes:
  • a receiving unit 1401 which receives a candidate resource sent by the network device to instruct the network device to send and an information block received by the terminal device to send one candidate resource among the at least two candidate resources in the one time interval Instructions;
  • the calculation unit 1402 obtains time synchronization according to the instruction information.
  • the information block includes at least a synchronization signal / physical broadcast channel block (SS / PBCH Block, SSB).
  • SS / PBCH Block SSB
  • the network device sends at least one information block in the one time interval, and the at least one information block includes the one information block.
  • the indication information includes: identification information of one candidate start symbol of at least two candidate start symbols of the first information block.
  • adjacent candidate start symbols have equal time-domain intervals, and the units of the time-domain intervals are orthogonal frequency division multiplexing (OFDM) symbols, subframes, milliseconds, and the information block. one.
  • OFDM orthogonal frequency division multiplexing
  • the calculation unit obtains time synchronization through the indication information, the size of the time domain interval, and the index value of the one information block.
  • the candidate start symbol is an OFDM symbol with a predetermined index value in the one time interval
  • the calculation unit obtains time synchronization through the index information and the index value of the one information block.
  • the network device sequentially transmits the at least one information block on the time-frequency resource predetermined for sending the information block within the one time interval
  • the The calculation unit also obtains time synchronization according to a predetermined relationship between the time-frequency resource and time.
  • the network device sends the at least one information block according to a predetermined mapping relationship between the at least one information block, and the calculation unit further The mapping relationship is synchronized in time.
  • the one time interval includes an integer number of first time-frequency resources for sending information blocks, and the at least two candidate resources are the integer number of first time-frequency resources for sending the same index At least two first time-frequency resources of the information block identified by the value.
  • the indication information includes: identification information of the one candidate resource in the at least two candidate resources.
  • the indication information includes: identification information of the first time-frequency resource corresponding to the one candidate resource in the integer number of first time-frequency resources.
  • the calculation unit obtains time synchronization according to the correspondence between the indication information and time.
  • the calculation unit further obtains the index value of the one signal block according to the indication information and the number of signal blocks included in the at least one signal block sent by the network device in the one time interval .
  • the indication information is carried in the main system information block (MIB: Master Information Block) of the PBCH in the one information block or in the system message block 1 (SIB1: System Information Block 1) .
  • MIB Master Information Block
  • SIB1 System Information Block 1
  • the indication information is expressed as a relative time-domain or frequency-domain mapping relationship between the SSB in the information block and other signals or channels.
  • the indication information is indicated by the DMRS sequence of the PBCH in the one information block and / or the PBCH load.
  • Embodiment 4 For a detailed description of Embodiment 4, refer to the description of the corresponding steps in Embodiment 2, and the description will not be repeated here.
  • the transmission resource of the information block is indicated by the instruction information, and therefore, even in the case where the default correspondence between the information block index and the transmission resource is to be changed, the transmission corresponding to the information block can be clarified Resources, which facilitates the terminal device to perform downlink synchronization.
  • This Embodiment 5 provides a terminal device. Since the principle of the device to solve the problem is similar to the method of Embodiment 2, the specific implementation may refer to the method of Embodiment 2, and the same content will not be repeated.
  • the terminal device 1500 may include: a central processing unit (CPU) 1501 and a memory 1502; the memory 1502 is coupled to the central processing unit 1501.
  • the memory 1502 can store various data; in addition, a data processing program is stored, and the program is executed under the control of the central processor 1501 to instruct the terminal device according to the received signaling.
  • the functions of the apparatus 1400 of Example 4 may be integrated into the central processor 1501 of the terminal device 1500.
  • the central processor 1501 may be configured to implement the method described in Embodiment 2.
  • the central processor 1501 may be configured to control so that the terminal device 1500 performs the method of Embodiment 2.
  • the above device 1400 may be configured separately from the central processor 1501.
  • the device 1400 may be configured as a chip connected to the central processor 1501, such as the unit shown in FIG. Control to realize the function of the device 1400.
  • the transmission resource of the information block is indicated by the instruction information, and therefore, even in the case where the default correspondence between the information block index and the transmission resource is to be changed, the transmission corresponding to the information block can be clarified Resources, which facilitates the terminal device to perform downlink synchronization.
  • This embodiment 6 provides a network device.
  • the principle of the device to solve the problem is similar to the method of embodiment 1. Therefore, for specific implementation, reference may be made to the method of embodiment 1, and descriptions of the same content will not be repeated.
  • FIG. 16 is a schematic diagram of a network device according to an embodiment of the present invention.
  • the network device 1600 may include: a central processing unit (CPU) 1601 and a memory 1602; the memory 1602 is coupled to the central processor 1601.
  • the memory 1602 can store various data; in addition, a data processing program is stored, and the program is executed under the control of the central processor 1601.
  • the functions of the device 1300 may be integrated into the central processor 1601.
  • the central processor 1601 may be configured to implement the method of Embodiment 1.
  • the central processor 1601 may be configured to control so that the network device 1600 performs the method of Embodiment 1.
  • the above device 1300 may be configured separately from the central processor 1601.
  • the device 1300 may be configured as a chip connected to the central processor 1601, such as the unit shown in FIG. Control to realize the function of the device 1300.
  • the network device 1600 may further include: a transceiver 1603 and an antenna 1604, etc .; wherein, the functions of the above components are similar to those in the prior art, and will not be repeated here. It is worth noting that the network device 1600 does not necessarily include all the components shown in FIG. 16; in addition, the network device 1600 may also include components not shown in FIG. 16, and reference may be made to the prior art.
  • the transmission resource of the information block is indicated by the instruction information, and therefore, even in the case where the default correspondence between the information block index and the transmission resource is to be changed, the transmission corresponding to the information block can be clarified Resources, which facilitates the terminal device to perform downlink synchronization.
  • Embodiment 7 provides a communication system, which includes at least the terminal device 1500 in Embodiment 5 and the network device 1600 in Embodiment 6. The contents of Embodiment 5 and Embodiment 6 are incorporated here, and will not be repeated here.
  • the transmission resource of the information block is indicated by the instruction information, and therefore, even in the case where the default correspondence between the information block index and the transmission resource is to be changed, the transmission corresponding to the information block can be clarified Resources, which facilitates the terminal device to perform downlink synchronization.
  • An embodiment of the present invention also provides a computer-readable program, in which when the program is executed in a transmission device or a network device, the program causes the transmission device or the network device to execute the transmission method of Embodiment 1.
  • Embodiments of the present invention also provide a storage medium storing a computer-readable program, where the computer-readable program causes a transmission apparatus or network device to execute the transmission method of Embodiment 1.
  • An embodiment of the present invention also provides a computer-readable program, where when the program is executed in a receiving device or a terminal device, the program causes the receiving device or the terminal device to execute the receiving method of Embodiment 2.
  • Embodiments of the present invention also provide a storage medium storing a computer-readable program, where the computer-readable program causes a receiving apparatus or terminal device to execute the receiving method of Embodiment 2.
  • the above device and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to such a computer-readable program which, when executed by a logic component, enables the logic component to implement the above-described device or component, or enables the logic component to implement the various methods described above Or steps.
  • the invention also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memories, and so on.
  • each device described in conjunction with the embodiments of the present invention may be directly embodied as hardware, software modules executed by a processor, or a combination of both.
  • one or more of the functional block diagrams shown in FIGS. 13 and 14 and / or one or more combinations of the functional block diagrams may correspond to each software module of the computer program flow or each hardware module.
  • These software modules may correspond to the steps shown in Figs. 4 and 12, respectively.
  • These hardware modules can be realized by solidifying these software modules using a field programmable gate array (FPGA), for example.
  • FPGA field programmable gate array
  • the software module may be located 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 the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the 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 larger-capacity flash memory device.
  • One or more of the functional block diagrams described in FIGS. 13 and 14 and / or one or more combinations of the functional block diagrams may be implemented as a general-purpose processor or a digital signal processor (DSP) for performing the functions described in this application , 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
  • FIGS. 13 and 14 and / or one or more combinations of the functional block diagrams may be implemented as a general-purpose processor or a digital signal processor (DSP) for performing the functions described in this application , 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.
  • ASIC Application specific integrated circuit
  • FPGA field programmable gate array
  • 5 and 6 and / or one or more combinations of the functional block diagrams can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessing Processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • a signal transmission device provided in a network device, the transmission device comprising:
  • a sending unit which sends instruction information for instructing one of the at least one information block sent by the network device within a time interval to send one of the at least two candidate resources in the one time interval .
  • the information block includes at least a synchronization signal / physical broadcast channel block (SS / PBCH Block, SSB).
  • SS / PBCH Block SSB
  • the indication information includes: identification information of one candidate start symbol of at least two candidate start symbols of the first information block in the at least one information block.
  • the time domain intervals of adjacent candidate start symbols are equal, and the unit of the time domain interval is one of OFDM symbol, subframe, millisecond, and the information block.
  • the candidate start symbol is an OFDM symbol with a predetermined index value in the one time interval.
  • the network device sends at least one information block in the one time interval in the following manner:
  • the network device Starting from the one candidate resource, the network device sends the at least one information block in sequence on the time-frequency resource predetermined for sending the information block in the one time interval.
  • the network device sends at least one information block in the one time interval in the following manner:
  • the network device Starting from the candidate start symbol, the network device sends the at least one information block according to a predetermined mapping relationship between the at least one information block.
  • the one time interval includes an integer number of first time-frequency resources, and the first time-frequency resources are used to send the information block,
  • the at least two candidate resources are at least two of the first time-frequency resources used to send the information block identified by the same index value among the integer number of first time-frequency resources.
  • the indication information includes: identification information of the one candidate resource in the at least two candidate resources.
  • the indication information includes: identification information of the first time-frequency resource corresponding to the one candidate resource in the integer number of first time-frequency resources.
  • the indication information is carried in the main system information block (MIB: Master Information Block) of the PBCH in the information block or in the system message block 1 (SIB1: System Information Block 1).
  • MIB Master Information Block
  • SIB1 System Information Block 1
  • the indication information is expressed as a relative time-domain or frequency-domain mapping relationship between the SSB in the one information block and other signals or channels.
  • the indication information is indicated by the DMRS sequence of the PBCH in the one information block and / or the load of the PBCH.
  • a signal receiving device provided in a terminal device comprising:
  • a receiving unit which receives indication information sent by a network device, where the indication information is used to indicate that an information block sent by the network device and received by the terminal device is sent in at least two candidate resources in a time interval A candidate resource for;
  • a calculation unit that obtains time synchronization according to the instruction information.
  • the information block includes at least a synchronization signal / physical broadcast channel block (SS / PBCH Block, SSB).
  • SS / PBCH Block SSB
  • the network device sends at least one information block in the one time interval, and the at least one information block includes the one information block.
  • the indication information includes: identification information of one candidate start symbol of at least two candidate start symbols of the first information block in the at least one information block.
  • the time domain intervals of adjacent candidate start symbols are equal, and the unit of the time domain interval is one of orthogonal frequency division multiplexing (OFDM) symbols, subframes, milliseconds, and the information block.
  • OFDM orthogonal frequency division multiplexing
  • the identification information of the one candidate start symbol includes: the number of the time-domain intervals between the one candidate start symbol and the first candidate start symbol of the at least two candidate start symbols,
  • the calculation unit obtains time synchronization through the indication information, the size of the time domain interval, and the index value of the one information block.
  • the at least one candidate start symbol is an OFDM symbol with a predetermined index value in the one time interval
  • the identification information of the one candidate start symbol includes: identification information of the OFDM symbol of the predetermined index value,
  • the calculation unit obtains time synchronization through the index value of the indication information and the one information block.
  • the network device sequentially sends the at least one information block on the time-frequency resource predetermined for sending the information block in the one time interval,
  • the calculation unit also obtains time synchronization according to a predetermined relationship between the time-frequency resource and time.
  • the network device Starting from the one candidate start symbol, the network device sends the at least one information block according to a predetermined mapping relationship between the at least one information block,
  • the calculation unit also obtains time synchronization according to the predetermined mapping relationship.
  • the at least two candidate resources are at least two of the first time-frequency resources for sending the information block identified by the same index value among the integer number of first time-frequency resources.
  • the indication information includes: identification information of the one candidate resource in the at least two candidate resources.
  • the indication information includes: identification information of the first time-frequency resource corresponding to the one candidate resource in the integer number of first time-frequency resources.
  • the calculation unit obtains time synchronization according to the correspondence between the indication information and time.
  • the calculation unit further obtains the index value of the one signal block according to the indication information and the number of signal blocks included in the at least one signal block sent by the network device in the one time interval.
  • the indication information is indicated by the DMRS sequence of the PBCH in the one information block and / or the load of the PBCH.
  • a communication system having network equipment and terminal equipment,
  • the network device has the sending device according to any one of appendices 1-13, and the terminal device has the receiving device according to any one of appendices 14-30.

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Abstract

本申请提供一种信号的发送方法、接收方法、发送装置、接收装置和通信系统，该发送装置设置于网络设备，所述装置包括：发送单元，其发送用于指示所述网络设备在一个时间间隔内发送的至少一个信息块中的一个信息块发送在所述一个时间间隔中的至少两个候选资源中的一个候选资源的指示信息。根据本申请，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源，进而便于终端设备进行下行同步。

Description

一种信号的发送方法、接收方法、发送装置、接收装置和通信系统 技术领域
本申请涉及通信领域，特别涉及一种信号的发送方法、接收方法、发送装置、接收装置和通信系统。
背景技术
在现有技术中，一个同步信号/物理广播信道块(SS/PBCH Block，SSB)可以具有一个主同步信号(PSS:Primary Synchronization Signal)、一个辅同步信号(SSS:Secondary Synchronization Signal)和一个物理层广播信道(PBCH:Physical Broadcast CHannel)。
在一个时间间隔内，网络设备可以通过不同方向的波束发送多个SSB，从而增加小区覆盖角度。
终端设备在接收到SSB后，可以利用该SSB进行初始接入阶段的时频同步，还可以进行无线资源管理(RRM：Radio Resource Management)和/或无线链路监听(RLM：Radios Link Monitoring)。
应该注意，上面对技术背景的介绍只是为了方便对本申请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申请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
网络设备在一个时间间隔内发送多个SSB时，各SSB可以在该时间间隔内的默认资源处被发送，其中，该一个时间间隔例如是半帧，该时间间隔的长度例如为5毫秒(ms)。
图1是一个半帧中各SSB的默认发送资源的一个示意图。在图1中，假设子载波间隔为30kHz，载波频率小于3GHz，在这种情况下，网络设备在一个半帧中共发送4个SSB，即，SSB1，SSB2，SSB3，SSB4，其中的1,2,3,4为各SSB的索引值；各SSB的起始发送资源分别为该半帧中的时隙slot 0的符号symbol 2，时隙slot 0的符号symbol 8，时隙slot 1的符号symbol 2，时隙slot 1的符号symbol 8；并且，网 络设备按照索引值递增的顺序发送各SSB。根据图1，SSB索引值与时隙索引和符号索引之间具有默认的对应关系。
在初始接入阶段，终端设备盲检SSB，当检测到一个SSB后通过SSB索引值，根据子载波间隔及该SSB索引值默认的时频资源位置获得时隙索引和符号索引，另外通过SSB中PBCH获得系统帧号，由此终端设备可以获得下行时间同步。
在利用非授权频段通信时，网络设备发送数据前需要进行对话前监听(LBT：Listen Before Talk)，从而检测信道是否空闲。检测结果为信道空闲时可以发送数据，如果信道为忙碌状态，发送设备需要再次检测，直到信道空闲为止才能够利用该非授权频段发送数据。
本申请的发明人发现，在进行LBT的场景下，SSB的发送过程会面临一些新的情况需要考虑。
图2是在LBT情况下发送SSB的一个示意图。如图2所示，如果在一个SSB的默认发送资源前信道为忙碌状态，即，LBT失败，那么该SSB将不能在默认时间被发送，在LBT成功时，LBT之后的发送资源能够用于发送SSB。
例如，在图2中，小区共有4个SSB，即，SSB1，SSB2，SSB3，SSB4。图2中的发送资源201,202,203,204分别是SSB1，SSB2，SSB3，SSB4的默认发送资源，在发送资源201,202前LBT失败，因此，发送资源201，202不能用于发送SSB1，SSB2；在发送资源203前LBT成功，因此，发送资源203，204可以被用于发送SSB。
本申请的发明人发现：一方面，如果使用图2的发送资源203，204来发送SSB3，SSB4，那么，SSB1和SSB2将无法被发送，即，SSB发送不完全，这会造成用于发送SSB1和SSB2的波束的覆盖范围内的用户无法接收到SSB而不能接入该小区，并且，对于连接态的用户来说，小区SSB发送不完全会造成用户对小区质量计算结果有误，最终影响小区重选的结果；另一方面，如果利用发送资源203，204及其之后的资源按顺序发送该小区的所有SSB，即，SSB1，SSB2，SSB3，SSB4，那么，SSB索引与发送资源之间的默认的对应关系将被改变，即，如果按照默认的对应关系，发送资源203用于发送SSB3，但是，为了发送所有SSB，资源203却被用于发送SSB1，这使得初始接入过程中终端设备难以根据上述默认的对应关系获得下行同步。
本申请实施例提供一种信号的发送方法、接收方法、发送装置、接收装置和通信系统，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源 之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源，从而，便于终端设备进行下行同步。
根据本申请实施例的第一方面，提供一种发送装置，设置于网络设备，该发送装置包括：
发送单元，其发送用于指示所述网络设备在一个时间间隔内发送的至少一个信息块中的一个信息块发送在所述一个时间间隔中的至少两个候选资源中的一个候选资源的指示信息。
根据本申请实施例的第二方面，提供一种信号的接收装置，设置于终端设备，所述接收装置包括：接收单元，其接收网络设备发送的用于指示所述网络设备在一个时间间隔内发送的一个信息块发送在所述一个时间间隔中的至少两个候选资源中的一个候选资源的指示信息；以及计算单元，其根据所述指示信息获得时间同步。
根据本申请实施例的第三方面，提供了一种通信系统，该通信系统包括终端设备和网络设备，该网络设备包括如上述实施例的第一方面所述的发送装置，该终端设备包括如上述实施例的第二方面所述的接收装置。
本申请实施例的有益效果在于：通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源。
参照后文的说明和附图，详细公开了本申请的特定实施方式，指明了本申请的原理可以被采用的方式。应该理解，本申请的实施方式在范围上并不因而受到限制。在所附权利要求的条款的范围内，本申请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
在本申请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申请实施例的进一步的理解，其构成了说明书的一部分，用于例示本申请的实施方式，并与文字描述一起来阐释本申请的原理。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1是一个半帧中各SSB的默认发送资源的一个示意图；
图2是在LBT情况下发送SSB的一个示意图；
图3是本申请的通信系统的一示意图；
图4是信号的发送方法的一个示意图；
图5是第一实施方式中候选起始符号的一个示意图；
图6是各候选起始符号的一个示意图；
图7是各信息块预定的映射关系的一个示意图；
图8是预设的时频资源的一个示意图；
图9是利用SSB与其它信号或信道的相对关系来表示指示信息的一个示意图；
图10是第一时频资源与候选资源的一个示意图；
图11是第一时频资源与候选资源的另一个示意图；
图12是本申请实施例2的信号的接收方法的一个示意图；
图13是实施例3的信号的发送装置的一个示意图；
图14是本实施例4的信号的接收装置的一个示意图；
图15是本申请实施例的终端设备的构成示意图；
图16是本发明实施例的网络设备构成示意图。
具体实施方式
参照附图，通过下面的说明书，本申请的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本申请的特定实施方式，其表明了其中可以采用本申请的原则的部分实施方式，应了解的是，本申请不限于所描述的实施方式，相反，本申请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。下面结合附图对本申请的各种实施方式进行说明。这些实施方式只是示例性的，不是对本申请的限制。
在本申请实施例中，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。
在本申请实施例中，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“该”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。
在本申请实施例中，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。
在本申请实施例中，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。
其中，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。
在本申请实施例中，术语“用户设备”(UE，User Equipment)或者“终端设备”(TE， Terminal 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。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、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
其中，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。
以下通过示例对本申请实施例的场景进行说明，但本申请不限于此。
图3是本申请的通信系统的一示意图，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)。
在本申请实施例中，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。
其中，终端设备302可以向网络设备301发送数据，例如使用授权或免授权传输方式。终端设备301可以接收一个或多个终端设备102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信息等，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。
此外，在终端设备302接入网络设备301之前，网络设备301可以向终端设备302发送与系统信息有关的信息，终端设备302对接收到的信息进行检测，以实现下行同步，并与网络设备301建立连接。
以下以将通信系统中的网络设备作为发送端，将终端设备作为接收端为例进行说明，但本申请不限于此，发送端和/或接收端还可以是其他的设备。例如，本申请不 仅适用于网络设备和终端设备之间的信号传输，还可以适用于两个终端设备之间的信号传输。
实施例1
本申请实施例1提供一种信号的发送方法，该方法可以由网络设备执行。
图4是信号的发送方法的一个示意图，如图4所示，该方法包括：
步骤401、网络设备发送用于指示所述网络设备在一个时间间隔内发送的至少一个信息块中的一个信息块发送在所述一个时间间隔中的至少两个候选资源中的一个候选资源的指示信息。
根据本实施例，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的一一对应关系将被改变的情况下，也能够明确发送信息块的资源，进而便于终端设备进行下行同步。
在本实施例中，一个时间间隔例如可以是半帧，该一个时间间隔的长度例如可以是5毫秒(ms)。
在本实施例中，一个信息块中可以至少包括同步信号/物理广播信道块(SS/PBCH Block，SSB)。例如，该信息块可以是SSB；或者，该信息块中除了具有SSB之外，还具有其它的信息。例如，其他的信息可以是控制资源集合0和/或承载系统信息块1(SIB1：System Information Block 1)的物理层共享信道。
在本实施例中，该网络设备在一个小区的该一个时间间隔中需要发送的包括预定数量个信息块的信息块组，称为该小区的信息块组。该预定数量为一个默认值，或者，由子载波间隔和/或载波频率确定的值。例如，当子载波间隔为15kHz，载波频率小于3GHz时，该信息块组中可以具有4个信息块，各信息块中的SSB的索引值彼此不同。此外，各信息块的索引值可以等于该信息块中SSB的索引值，也可以不相等。
在本实施例中，网络设备可以利用非授权频段通信，例如，网络设备在该一个时间间隔中发送信息块前进行LBT检测,在LBT成功后，开始发送信息块组。
在一个实施方式中，网络设备在一个时间间隔内完全发送信息块组或不发送信息块，即在LBT成功后，发送信息块组中的所有信息块，若不能完全发送信息块组中的所有信息块则不发送信息块。例如，一个小区的信息块组中包含4个信息块，在LBT成功后，发送信息块组中的所有4个信息块；如果在该一个时间间隔内剩余资 源不能完全发送该4个信息块，该网络设备则不在该一个时间间隔内发送信息块。再例如，LBT检测始终失败，当该一个时间间隔内的剩余资源不能完全发送该4个信息块时，该网络设备停止LBT检测不在该一个时间间隔中发送信息块。
在另一个实施方式中，网络设备在一个时间间隔发送信息块组中的部分信息块或不发送信息块：例如，一个小区的信息块组中包含4个信息块，在LBT成功后，该一个时间间隔内的剩余资源仅能够发送1个信息块，网络设备仅发送信息块组中的一个信息块(例如，第一个信息块，或最后一个信息块等)，如果该网络设备在该一个时间间隔内的LBT检测均失败，则不在该一个时间间隔内发送信息块。另外，在该实施方式中，该网络设备还发送一个控制信息，该控制信息用于指示该网络设备在该一个时间间隔内没有发送的该信息块组中的信息块，或指示终端设备不上报该一个时间间隔中的测量结果，该测量结果是无线资源管理(RRM)、无线链路测量、信道状态测量其中之一的测量结果。该控制信息可以是一个公共控制信息，即该小区服务的终端设备均可以接收到该公共控制信息，也可以是一个组公共控制信息，即仅该小区服务的终端设备中的一组终端设备可以收到该控制信息。在该实施方式中，只要在时间间隔内存在发送信息块的资源，网络设备便发送信息块，可以提高终端设备接入的可能性，并通过控制信息通知终端设备在该一个时间间隔内未完全发送信息块，有效避免连接态终端设备的测量误差。
根据本实施例，在一个时间间隔中，每一个信息块可以具有至少两个用于发送该信息块的候选资源，并且，该信息块可以在该至少两个候选资源中的某一个候选资源上被发送，其中，每一个信息块所具有的候选资源的数量和时频位置可以是被预先设定。由于每一个信息块都可以具有至少两个候选资源，因此，在部分候选资源由于LBT失败而无法用于发送该信息块的情况下，仍有可能利用其它的候选资源发送该信息块，所以，能提高该信息块发送的可能性，进而提高对该小区中所有信息块完全发送的可能性；并且，通过指示信息来指示实际用于发送该信息块的候选资源，能够明确该信息块在哪个候选资源上被发送，从而便于获取该候选资源的时频信息。
在本实施例中，该指示信息可以在被承载在网络设备所发送的信息块中，由此，网络设备在发送该信息块时就实现了对该指示信息的发送，即，步骤401通过网络设备发送信息块来实现。此外，该指示信息也可以被承载在其它的信息中，即，网络设备在执行了发送信息块的动作之外，还执行步骤401以发送该指示信息。
下面，对本实施例的候选资源和指示信息做进一步说明。
在第一实施方式中，各信息块都可以具有至少两个候选资源。
在本实施方式中，各候选起始符号之间的时域间隔可以相等，也可以不相等，各候选起始符号可以是一个时间间隔中具有预定索引值的正交频分复用(OFDM)符号。其中，该时域间隔的单位可以是整数个OFDM符号，整数个子帧，毫秒，或者该信息块。
在本实施方式中，该指示信息包括：至少一个信息块中第一个信息块的至少两个候选起始符号中的一个候选起始符号的识别信息。其中，该第一个信息块可以指该信息块组中索引值最小的信息块。
例如，当相邻的候选起始符号的时域间隔相等时，候选起始符号的识别信息可以是该候选起始符号与第一个候选起始符号之间的该时域间隔的个数，由此，根据该时域间隔的个数和该时域间隔大小，以及候选起始符号中的第一个候选起始符号，能够确定该候选起始符号在该一个时间间隔的所有符号中的索引值；或者，当候选起始符号的识别信息为一个时间间隔中具有预定索引值的正交频分复用(OFDM)符号时，该候选起始符号的识别信息可以是该候选起始符号在所有候选起始符号中的序号。
图5是第一实施方式中候选起始符号的一个示意图。如图5所示，信息块组中具有4个信息块，即，信息块0，信息块1，信息块2，信息块3。其中，信息块0为第一个信息块。
如图5所示，信息块0具有5个候选起始符号，分别为起始符号0～4。
网络设备可以在各候选起始符号前进行LBT检测，当信道为空闲状态时，即LBT成功，网络设备从该候选起始符号开始发送第一个信息块，并且，该指示信息被设定为开始发送该第一个信息块的该候选起始符号的识别信息。
在本实施方式中，在发送该第一个信息块之后，网络设备还可以继续按信息块的索引值的顺序，发送其他的信息块，该信息块的索引值的顺序例如是该索引值从小到大的排列顺序。
例如，在图5中，网络设备在候选起始符号2之前检测到LBT成功，所以，网络设备从候选起始符号2开始依次发送信息块0～信息块3，并且，将候选起始符号2的识别信息作为指示信息。
在一种发送各信息块的方式中，各信息块之间可以有预定的映射关系，即，不同信息块的起始符号之间的相对位置具有预定值，因此，当终端设备检测到一个信息块 后，通过网络设备发送的该候选起始符号的识别信息，以及各信息块之间的该预定的映射关系，获得时间同步。
在一个具体的实例中，可以通过例如图1所示的各信息块与发送资源之间默认的对应关系来设定该预定的映射关系，即，在该默认的对应关系中，各信息块与发送资源对应，从而各信息块的发送资源之间的相对位置关系也被设定。
例如：当相邻的候选起始符号的时域间隔相等时，候选起始符号的识别信息为该候选起始符号与第一个候选起始符号之间的时域间隔的个数，假设相邻的候选起始符号之间的时域间隔的大小为4个符号，终端设备检测到信息块3，指示信息为候选起始符号2与第一个候选起始符号之间的时域间隔个数为2；如果在默认的对应关系中(即从第一个候选起始符号开始发送该信息块组时的默认关系)，用于发送信息块3的资源的起始符号为时隙1的符号6，那么终端设备在该默认的对应关系中符号索引值的基础上加2×4＝8(即，时域间隔的个数×时域间隔的大小)个符号，从而确定实际发送该信息块3的资源的第一个符号的索引，以及该符号所在时隙的索引，便获得下行同步。
又例如：当候选起始符号的识别信息为该候选起始符号的在所有候选起始符号中的序号时，各候选起始符号例如如图6所示，一个时间间隔内的5个候选起始符号的分别定义为该一个时间间隔内索引值分别为4，8，16，20，31(即，该时间间隔中的时隙0中的符号4，8，时隙1中的符号2，6，时隙2中的符号4)的OFDM符号，指示信息的大小为3比特，指示0-4个候选起始符号其中之一；假设终端设备检测到信息块3，指示信息的3比特为‘000’，指示该候选起始符号在所有候选起始符号中的序号0，那么终端设备可以基于该序号0对应的确定实际发送该信息块0的资源的第一个符号的索引值为4，并根据信息块3与信息块0的默认关系确定信息块3的第一个符号的OFDM符号索引值以及该符号所在时隙的索引，便获得下行同步。
在另一个具体的实例中，可以直接设定不同信息块的资源之间的符号数量，从而表示该预定的映射关系。
例如：图7是各信息块预定的映射关系的一个示意图，如图7所示，在信息块组中，信息块0与信息块1的资源连续，二者中间没有间隔符号；信息块1与信息块2的资源之间间隔4个符号；信息块2与信息块3的资源连续，二者中间没有间隔符号。
如图7所示，当网络设备在候选起始符号1检测到信道为空闲状态时，信息块组从候选起始符号1开始按照预定的各信息块之间的符号数量发送信息块组中的各信息块，并且，当终端设备检测到一个信息块后，通过网络设备发送的该候选起始符号 的识别信息，以及不同信息块的资源之间的符号数量，获得时间同步。具体方式可参考前例，此处不再重复。
在另一种发送各信息块的方式中，各信息块可以在预设的时频资源上被发送。例如，在一个时间间隔内，可以预定义用于发送信息块的整数个(例如，大于一个)时频资源，各时频资源与时间有一一对应关系，其中，在该整数个(例如，大于一个)时频资源中，前N个时频资源的起始符号可以被设定为候选起始符号，即，预设有N个候选起始符号，N为大于1的自然数。信息块组中的信息块从一个候选起始符号开始依次在该候选起始符号开始的连续的信息块个数个该时频资源上被发送。
图8是预设的时频资源的一个示意图。如图8所示，80～87是一个时间间隔内的预设的8个用于发送信息块的时频资源，候选起始符号0～4分别对应于时频资源80～84的起始符号，其中，候选起始符号0例如是该时间间隔内时隙0的符号4。
如图8所示，网络设备可以从候选起始符号1开始发送信息块组，即信息块组中的4个信息块0，1，2，3分别在时频资源81，82，83，84上被发送。当终端设备例如接收到信息块2后，可以根据指示信息(即，发送信息块组的起始符号为候选起始符号1)，确定该信息块2在该时间间隔中的哪个预设的时频资源上被发送，例如，2+1＝3(即，信息块的索引值+候选起始符号的识别信息＝时频资源的序号)，并且，根据第3个时频资源83与时间的一一对应关系获得下行同步。
在第一实施方式中，该指示信息可以被承载在网络设备所发送的信息块中的PBCH的主系统信息块(MIB：Master Information Block)中或被承载在系统消息块1(SIB1：System Information Block1)中。
在本实施方式中，该指示信息也可以被表示为网络设备所发送的信息块中的SSB与其它信号或信道的相对关系，该相对关系例如可以是时域或频域映射关系。即，当SSB与其它信号或信道的不同的相对关系，可以表示不同的候选起始符号的识别信息。该其他信号或信道可以是该信息块包括的信道或信号，例如，该信息块中的控制资源集合0，或信道状态参考信号(CSI-RS：Channel State Information Reference Signal)。
图9是利用SSB与其它信号或信道的相对关系来表示指示信息的一个示意图。如图9所示，PBCH的负载中可以包含用于指示控制资源集合0(CORESET 0)的时频资源的第一指示信息。在图9中，当一个信息块中(例如，信息块0)的PBCH负载指示的控制资源集合0的频域最小资源块索引大于该信息块中SSB(例如，SSB0) 占用的资源块中频域索引的最大值时表示该信息块在候选资源1(例如，起始符号为候选起始符号1)发送；当一个信息块中的PBCH负载指示的控制资源集合0的频域索引的最大值小于该信息块中SSB(例如，SSB3)占用的资源块中频域索引的最小值时表示该信息块在候选资源2(例如，起始符号为候选起始符号1)发送。终端设备通过该控制资源集合0与SSB之间相对关系，确定候选资源，进而确定接收到的信息块的发送符号和时隙索引而获得下行同步。
此外，在图9中，LBT成功后，按照信息块2，信息块3，信息块0，信息块1的顺序发送各信息块。但可以不限于此，图9中也可以是，LBT成功后，按照信息块0，信息块1，信息块2，信息块3的顺序发送各信息块。
在第二实施方式中，一个时间间隔可以包括整数个预设的用于发送信息块的第一时频资源，各第一时频资源可以具有一个或多个符号。其中，一个时间间隔中的该整数个预设的第一时频资源的数量可以大于该小区的信息块组中信息块的数量。
在本实施方式中，该至少两个候选资源是该整数个第一时频资源中用于发送同一个索引值标识的信息块的至少两个第一时频资源，即，具有同一个索引值标识的信息块(例如，信息块2)可以在至少两个第一时频资源上被发射，该至少两个时频资源就是该信息块(例如，信息块2)的至少两个候选资源。
在一个具体实例中，该指示信息包括：实际发送该信息块的一个候选资源在该至少两个候选资源中的识别信息。
图10是第一时频资源与候选资源的一个示意图。如图10所示，各候选资源对应一个时频资源。对于各信息块(例如，信息块0～信息块3中的任一者)，都具有两个候选资源(即，候选资源1和候选资源2)，其中，图10的4个候选资源1可以构成候选资源组1，候选资源2可以构成候选资源组2。
如图10的颜色较深的信息块所示，网络设备在LBT成功后，按照信息块2，信息块3，信息块0，信息块1的顺序发送各信息块，各信息块的指示信息包括发送该信息块的候选资源在该信息块的至少两个候选资源中的识别信息。例如，对于信息块3，指示信息为信息块3的两个候选资源(即，候选资源1和候选资源2)中的候选资源1的识别信息“1”；又例如，对于信息块0，指示信息为信息块0的两个候选资源(即，候选资源1和候选资源2)中的候选资源2的识别信息“2”。
在该具体实例中，终端设备可以通过该候选发送位置与时间的对应关系获得下行 同步。例如，终端设备检测到图10的信息块1，且指示信息指示该信息块在候选资源中的候选资源2发送，该终端设备通过候选资源2的信息块1的起始符号和时隙序号获得下行同步。
在对应于例如图10的该具体实例中，该指示信息可以被承载在网络设备所发送的信息块中的PBCH的主系统信息块(MIB：Master Information Block)中或被承载在系统消息块1(SIB1：System Information Block1)中；或者，该指示信息也可以被表示为网络设备所发送的信息块中的SSB与其它信号或信道的相对关系，即，当SSB与其它信号或信道的不同的相对关系，可以表示不同的候选资源的识别信息，具体说明可以参考对图9的说明。
在第二实施方式的另一个具体实例中，该指示信息可以包括：实际发送该信息块的一个候选资源对应的第一时频资源在该整数个第一时频资源中的识别信息。
图11是第一时频资源与候选资源的另一个示意图。如图11所示，假设在该一个时间间隔中预设有8个第一时频资源，其识别信息分别为0～7，各候选资源对应一个时频资源。对于各信息块(例如，信息块0～信息块3中的任一者)，都具有两个候选资源，例如，第一时频资源0,4是信息块0的候选资源，第一时频资源1,5是信息块1的候选资源，第一时频资源2,6是信息块2的候选资源，第一时频资源3,7是信息块3的候选资源。
如图11的颜色较深的信息块所示，网络设备在LBT成功后，按照信息块2，信息块3，信息块0，信息块1的顺序发送各信息块，各信息块的指示信息包括发送该信息块的候选资源所对应的第一时频资源的识别信息。例如，对于信息块3，指示信息为发送信息块3的第一时频资源3的识别信息“3”；又例如，对于信息块0，指示信息为发送信息块0的第一时频资源4的识别信息“4”。
在该具体实例中，终端设备可以通过该第一时频资源的识别信息与时间的对应关系获得下行同步；此外，终端设备还可以将该第一时频资源的识别信息与该小区的信息块组中的信息块个数进行模除，从而得到接收的该信息块的索引值。
例如，终端设备检测到图11所示的被发送的某个信息块，通过DMRS和/或PBCH负载获得发送该信息块的候选资源为第一时频资源5，终端设备根据该第一时频资源5获得与之对应的符号及时隙索引从而获得下行同步。此外，终端设备还可以通过载波频率和/或子载波间隔确定该小区信息块组中包含的信息块个数为L＝4，或者非授 权频段小区的信息块组中包含的信息块个数默认值为L＝4，由此，可以计算得到该信息块的索引为5mod 4＝1，能够利用信息块的索引1进行RRM、RLM等测量功能。
在对应于例如图11的该具体实例中，该指示信息可以由该信息块中的物理广播信道(PBCH)的解调参考信号(DMRS:demodulation reference signal)序列和/或物理广播信道(PBCH)的负载所指示。例如，当第一时频资源的识别信息小于或等于8时，可以通过DMRS或PBCH来指示该指示信息；当第一时频资源的识别信息大于8时，可以通过DMRS和PBCH二者来指示该指示信息。
根据本实施例，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源，进而便于终端设备进行下行同步。
实施例2
本实施例2提供一种信号的接收方法，该方法由终端设备执行。
图12是本申请实施例2的信号的接收方法的一个示意图。如图12所示，该方法包括：
步骤1201、终端设备接收网络设备发送的用于指示所述网络设备在发送的、且被所述终端设备接收的一个信息块发送在一个时间间隔中的至少两个候选资源中的一个候选资源的指示信息；以及
步骤1202、所述终端设备根据所述指示信息获得时间同步。
在本实施例中，信息块中至少包括同步信号/物理广播信道块(SS/PBCH Block，SSB)。
在本实施例的第一实施方式中，网络设备在一个时间间隔中发送了至少一个信息块，该至少一个信息块包括由终端设备接收到的该一个信息块。在该实施方式中，该至少一个信息块中的各信息块都可以具有至少两个候选资源。
关于该第一实施方式的说明，可以参考实施例1中对第一实施方式的描述，例如：
在该实施方式中，指示信息用于指示所述至少一个信息块的所述第一个信息块的候选起始符号是至少两个候选起始符号中的一个候选起始符号，例如，该指示信息包括：该一个候选起始符号的标识信息。
在该实施方式中，相邻的候选起始符号的时域间隔相等，时域间隔的单位是正交 频分复用(OFDM)符号，子帧，毫秒和所述信息块其中之一。
在该实施方式中，终端设备通过该指示信息、该时域间隔的大小和该一个信息块的索引值获得时间同步。
在该实施方式中，所述一个候选起始符号的标识信息包括：所述一个时间间隔中预定索引值的OFDM符号的标识信息。终端设备通过作为该指示信息和该一个信息块的索引值获得时间同步。
在该实施方式中，网络设备可以从该一个候选起始符号开始，在所述一个时间间隔内预定的用于发送信息块的时频资源上依次发送所述至少一个信息块，在该情况下，终端设备还需要进一步结合预定的时频资源与时间的关系获得时间同步。
在该实施方式中，网络设备也可以从该一个候选起始符号开始，按照所述至少一个信息块之间预定的映射关系发送所述至少一个信息块，在该情况下，终端设备还需要进一步结合该预定的映射关系获得时间同步。
在本实施方式中，所述指示信息被承载在PBCH的主系统信息块(MIB：Master Information Block)中或被承载在系统消息块1(SIB1：System Information Block1)中，或者，所述指示信息被表示为所述信息块中的SSB与其它信号或信道的相对时域或频域映射关系。
在本实施例的第二实施方式中，一个时间间隔包括用于发送信息块的整数个第一时频资源，该至少两个候选资源是该整数个第一时频资源中用于发送同一个索引值标识的所述信息块的至少两个所述第一时频资源。在该实施方式中，终端设备可以根据指示信息与时间的对应关系获得时间同步。
关于该第二实施方式的说明，可以参考实施例1中对第二实施方式的描述，例如：
在该实施方式的一个具体实例中，该指示信息可以包括：该一个候选资源在该至少两个候选资源中的识别信息。
在该实例中，终端设备可以根据候选资源的识别信息和接收到的该信息块的索引值，确定发送该信息块的第一时频资源，从而确定该第一时频资源的起始符号和时隙序号，从而获得下行同步。
在该实例中，指示信息被承载在PBCH的主系统信息块(MIB：Master Information Block)中或被承载在系统消息块1(SIB1：System Information Block1)中，或者，所述指示信息被表示为所述信息块中的SSB与其它信号或信道的相对时域或频域映 射关系。
在该实施方式的另一个具体实例中，该指示信息也可以包括：一个候选资源对应的所述第一时频资源在所述整数个第一时频资源中的识别信息。
在该实例中，终端设备可以根据第一时频资源的识别信息确定发送该信息块的第一时频资源，从而确定该第一时频资源的起始符号和时隙序号，从而获得下行同步。此外，在该实例中，终端设备还可以根据指示信息与该小区信息块组中包含的信息块个数，得到接收到的该信号块的索引值，例如，二者进行模除以得到信息块的索引值。
在该实例中，该指示信息可以由该一个信息块的PBCH的DMRS序列和/或PBCH负载所指示。
根据本实施例，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源，进而便于终端设备进行下行同步。
实施例3
本实施例3提供信号的发送装置，设置于网络设备。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考实施例1的方法的实施，内容相同之处不再重复说明。
图13是实施例3的信号的发送装置的一个示意图，如图13所示，该装置1300包括：
发送单元1301，其发送用于指示所述网络设备在一个时间间隔内发送的至少一个信息块中的一个信息块发送在所述一个时间间隔中的至少两个候选资源中的一个候选资源的指示信息。
在本实施例中，信息块中至少包括同步信号/物理广播信道块(SS/PBCH Block，SSB)。
在本实施例中，所述指示信息包括：所述至少一个信息块中第一个信息块的至少两个候选起始符号中的一个候选起始符号的识别信息。
在本实施例中，相邻的所述候选起始符号的时域间隔相等，所述时域间隔的单位是OFDM符号，子帧，毫秒和所述信息块其中之一。
在本实施例中，所述候选起始符号是所述一个时间间隔中预定索引值的OFDM 符号。
在本实施例中，所述网络设备以如下方式在所述一个时间间隔内发送至少一个信息块：所述网络设备从所述一个候选资源开始，在所述一个时间间隔内预定的用于发送信息块的时频资源上按照顺序发送所述至少一个信息块。
在本实施例中，所述网络设备以如下方式在所述一个时间间隔内发送至少一个信息块：所述网络设备从所述候选起始符号开始，按照所述至少一个信息块之间预定的映射关系发送所述至少一个信息块。
在本实施例中，所述一个时间间隔包括整数个第一时频资源，所述第一时频资源用于发送所述信息块，所述至少两个候选资源是所述整数个第一时频资源中用于发送同一个索引值标识的所述信息块的至少两个所述第一时频资源。
在本实施例中，所述指示信息包括：所述一个候选资源在所述至少两个候选资源中的识别信息。
在本实施例中，所述指示信息包括：所述一个候选资源对应的所述第一时频资源在所述整数个第一时频资源中的识别信息。
在本实施例中，所述指示信息被承载在所述一个信息块中的PBCH的主系统信息块(MIB：Master Information Block)中或被承载在系统消息块1(SIB1：System Information Block1)中。
在本实施例中，所述指示信息被表示为所述信息块中的SSB与其它信号或信道的相对时域或频域映射关系。
在本实施例中，所述指示信息由所述一个信息块中的PBCH的DMRS序列和/或PBCH负载所指示。
关于本实施例的详细说明，可以参考实施例1中对相应步骤的描述，此处不再重复说明。
根据本实施例，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源，进而便于终端设备进行下行同步。
实施例4
本实施例4提供一种信号的接收装置，设置于终端设备。由于该装置解决问题的 原理与实施例2的方法类似，因此其具体的实施可以参考实施例2的方法的实施，内容相同之处不再重复说明。
图14是本实施例4的信号的接收装置的一个示意图。如图14所示，装置1400包括：
接收单元1401，其接收网络设备发送的用于指示所述网络设备发送、并且由所述终端设备接收的一个信息块发送在所述一个时间间隔中的至少两个候选资源中的一个候选资源的指示信息；以及
计算单元1402，其根据所述指示信息获得时间同步。
在本实施例中，所述信息块中至少包括同步信号/物理广播信道块(SS/PBCH Block，SSB)。
在本实施例中，所述网络设备在所述一个时间间隔中发送了至少一个信息块，所述至少一个信息块包括所述一个信息块。
在本实施例中，所述指示信息包括：第一个信息块的至少两个候选起始符号中的一个候选起始符号的标识信息。
在本实施例中，相邻的所述候选起始符号的时域间隔相等，所述时域间隔的单位是正交频分复用(OFDM)符号，子帧，毫秒和所述信息块其中之一。
在本实施例中，所述计算单元通过所述指示信息、所述时域间隔的大小和所述一个信息块的索引值获得时间同步。
在本实施例中，所述候选起始符号是所述一个时间间隔中预定索引值的OFDM符号，所述计算单元通过所述指示信息和所述一个信息块的索引值获得时间同步。
在本实施例中，所述网络设备从所述一个候选起始符号开始，在所述一个时间间隔内预定的用于发送信息块的时频资源上依次发送所述至少一个信息块，所述计算单元还根据预定的所述时频资源与时间的关系获得时间同步。
在本实施例中，所述网络设备从所述一个候选起始符号开始，按照所述至少一个信息块之间预定的映射关系发送所述至少一个信息块，所述计算单元还根据所述预定的映射关系获得时间同步。
在本实施例中，所述一个时间间隔包括用于发送信息块的整数个第一时频资源，所述至少两个候选资源是所述整数个第一时频资源中用于发送同一个索引值标识的所述信息块的至少两个所述第一时频资源。
在本实施例中，所述指示信息包括：所述一个候选资源在所述至少两个候选资源中的识别信息。
在本实施例中，所述指示信息包括：所述一个候选资源对应的所述第一时频资源在所述整数个第一时频资源中的识别信息。
在本实施例中，所述计算单元根据所述指示信息与时间的对应关系获得时间同步。
在本实施例中，所述计算单元还根据所述指示信息与所述网络设备在所述一个时间间隔中发送至少一个信号块中包含的信号块的数量，得到所述一个信号块的索引值。
在本实施例中，所述指示信息被承载在所述一个信息块中的PBCH的主系统信息块(MIB：Master Information Block)中或被承载在系统消息块1(SIB1：System Information Block1)中。
在本实施例中，所述指示信息被表示为所述信息块中的SSB与其它信号或信道的相对时域或频域映射关系。
在本实施例中，所述指示信息由所述一个信息块中的PBCH的DMRS序列和/或所述PBCH负载所指示。
关于实施例4的详细说明，可以参考实施例2中对相应步骤的描述，此处不再重复说明。
根据本实施例，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源，进而便于终端设备进行下行同步。
实施例5
本实施例5提供一种终端设备，由于该设备解决问题的原理与实施例2的方法类似，因此其具体的实施可以参考实施例2的方法实施，内容相同之处不再重复说明。
图15是本申请实施例的终端设备的构成示意图。如图15所示，终端设备1500可以包括：中央处理器(CPU)1501和存储器1502；存储器1502耦合到中央处理器1501。其中该存储器1502可存储各种数据；此外还存储数据处理的程序，并且在中央处理器1501的控制下执行该程序，以根据接收的信令对终端设备进行指示。
在一个实施方式中，实施例4的装置1400的功能可以被集成到终端设备1500的中央处理器1501中。其中，中央处理器1501可以被配置为实现实施例2所述的方法。
例如，中央处理器1501可以被配置为进行控制，以使终端设备1500执行实施例2的方法。
另外，该中央处理器1501的其他配置方式可以参考实施例2，此处不再赘述。
在另一个实施方式中，上述装置1400可以与中央处理器1501分开配置，例如，可以将装置1400配置为与中央处理器1501连接的芯片，如图15所示的单元，通过中央处理器1501的控制来实现装置1400的功能。
根据本实施例，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源，进而便于终端设备进行下行同步。
实施例6
本实施例6提供一种网络设备，该设备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考实施例1的方法实施，内容相同之处不再重复说明。
图16是本发明实施例的网络设备构成示意图。如图16所示，网络设备1600可以包括：中央处理器(CPU)1601和存储器1602；存储器1602耦合到中央处理器1601。其中该存储器1602可存储各种数据；此外还存储数据处理的程序，并且在中央处理器1601的控制下执行该程序。
在一个实施方式中，装置1300的功能可以被集成到中央处理器1601中。其中，中央处理器1601可以被配置为实现实施例1的方法。
例如，中央处理器1601可以被配置为进行控制，以使网络设备1600执行实施例1的方法。
另外，该中央处理器1601的其他配置方式可以参考实施例1，此处不再赘述。
在另一个实施方式中，上述装置1300可以与中央处理器1601分开配置，例如，可以将装置1300配置为与中央处理器1601连接的芯片，如图16所示的单元，通过中央处理器1601的控制来实现装置1300的功能。
此外，如图16所示，网络设备1600还可以包括：收发机1603和天线1604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1600也并不是必须要包括图16中所示的所有部件；此外，网络设备1600还可以包括图16中没有示出的部件，可以参考现有技术。
根据本实施例，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源，进而便于终端设备进行下行同步。
实施例7
本实施例7提供一种通信系统，其至少包括实施例5中的终端设备1500和实施例6中的网络设备1600。实施例5和实施例6的内容被合并于此，此处不再赘述。
根据本实施例，通过指示信息来指示信息块的发送资源，由此，即使在信息块索引与发送资源之间的默认的对应关系将被改变的情况下，也能够明确信息块所对应的发送资源，进而便于终端设备进行下行同步。
本发明实施例还提供一种计算机可读程序，其中当在发送装置或网络设备中执行该程序时，该程序使得发送装置或网络设备执行实施例1的发送方法。
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，其中该计算机可读程序使得发送装置或网络设备执行实施例1的发送方法。
本发明实施例还提供一种计算机可读程序，其中当在接收装置或终端设备中执行该程序时，该程序使得接收装置或终端设备执行实施例2的接收方法。
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，其中该计算机可读程序使得接收装置或终端设备执行实施例2的接收方法。
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。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在各装置中的各处理方法可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图13、14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4、12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(例如移动终端)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。
针对图13、14描述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，可以实现为用于执行本申请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)或其它可编程逻辑器件、分立门或晶体管逻辑器件、分立硬件组件、或者其任意适当组合。针对图5、6描述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，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。
本申请还提供如下的附记：
1.一种信号的发送装置，设置于网络设备，该发送装置包括：
发送单元，其发送用于指示所述网络设备在一个时间间隔内发送的至少一个信息块中的一个信息块发送在所述一个时间间隔中的至少两个候选资源中的一个候选资源的指示信息。
2.所述附记1所述装置，其中，
所述信息块中至少包括同步信号/物理广播信道块(SS/PBCH Block，SSB)。
3.如附记1或2所述的装置，其中，
所述指示信息包括：所述至少一个信息块中第一个信息块的至少两个候选起始符号中的一个候选起始符号的识别信息。
4.如附记3所述的装置，其中，
相邻的所述候选起始符号的时域间隔相等，所述时域间隔的单位是OFDM符号，子帧，毫秒和所述信息块其中之一。
5.如附记3所述的装置，其中，
所述候选起始符号是所述一个时间间隔中预定索引值的OFDM符号。
6.如附记3所述的装置，其中，
所述网络设备以如下方式在所述一个时间间隔内发送至少一个信息块：
所述网络设备从所述一个候选资源开始，在所述一个时间间隔内预定的用于发送信息块的时频资源上按照顺序发送所述至少一个信息块。
7.如附记3所述的装置，其中，
所述网络设备以如下方式在所述一个时间间隔内发送至少一个信息块：
所述网络设备从所述候选起始符号开始，按照所述至少一个信息块之间预定的映射关系发送所述至少一个信息块。
8.如附记1或2所述的装置，其中，
所述一个时间间隔包括整数个第一时频资源，所述第一时频资源用于发送所述信息块，
所述至少两个候选资源是所述整数个第一时频资源中用于发送同一个索引值标识的所述信息块的至少两个所述第一时频资源。
9.如附记8所述的装置，其中，
所述指示信息包括：所述一个候选资源在所述至少两个候选资源中的识别信息。
10.如附记8所述的装置，其中，
所述指示信息包括：所述一个候选资源对应的所述第一时频资源在所述整数个第一时频资源中的识别信息。
11.如附记3或9所述的装置，其中，
所述指示信息被承载在所述信息块中的PBCH的主系统信息块(MIB：Master Information Block)中或被承载在系统消息块1(SIB1：System Information Block1)中。
12.如附记3或9所述的装置，其中，
所述指示信息被表示为所述一个信息块中的SSB与其它信号或信道的相对时域 或频域映射关系。
13.如附记10所述的装置，其中，
所述指示信息由所述一个信息块中的PBCH的DMRS序列和/或所述PBCH的负载所指示。
14.一种信号的接收装置，设置于终端设备，所述接收装置包括：
接收单元，其接收网络设备发送的指示信息，所述指示信息用于指示所述网络设备发送的、且被所述终端设备接收的一个信息块发送在一个时间间隔中的至少两个候选资源中的一个候选资源；以及
计算单元，其根据所述指示信息获得时间同步。
15.如附记14所述装置，其中，
所述信息块中至少包括同步信号/物理广播信道块(SS/PBCH Block，SSB)。
16.如附记14所述的装置，其中，
所述网络设备在所述一个时间间隔中发送了至少一个信息块，所述至少一个信息块包括所述一个信息块。
17.如附记16所述的装置，其中，
所述指示信息包括：所述至少一个信息块中的第一个信息块的至少两个候选起始符号中的一个候选起始符号的标识信息。
18.如附记17所述的装置，其中，
相邻的所述候选起始符号的时域间隔相等，所述时域间隔的单位是正交频分复用(OFDM)符号，子帧，毫秒和所述信息块其中之一。
19.如附记18所述的装置，其中，
所述一个候选起始符号的标识信息包括：所述一个候选起始符号与所述至少两个候选起始符号中的第一个候选起始符号之间的所述时域间隔个数，
所述计算单元通过所述指示信息、所述时域间隔的大小和所述一个信息块的索引值获得时间同步。
20.如附记17所述的装置，其中，
所述至少一个候选起始符号是所述一个时间间隔中预定索引值的OFDM符号，
所述一个候选起始符号的标识信息包括：所述预定索引值的OFDM符号的标识信息，
所述计算单元通过所述指示信息的和所述一个信息块的索引值获得时间同步。
21.如附记19或20所述的装置，其中，
所述网络设备从所述一个候选起始符号开始，在所述一个时间间隔内预定的用于发送信息块的时频资源上依次发送所述至少一个信息块，
所述计算单元还根据预定的所述时频资源与时间的关系获得时间同步。
22.如附记19或20所述的装置，其中，还包括：
所述网络设备从所述一个候选起始符号开始，按照所述至少一个信息块之间预定的映射关系发送所述至少一个信息块，
所述计算单元还根据所述预定的映射关系获得时间同步。
23.如附记14所述的装置，其中，所述一个时间间隔包括用于发送信息块的整数个第一时频资源，
所述至少两个候选资源是所述整数个第一时频资源中用于发送同一个索引值标识的信息块的至少两个所述第一时频资源。
24.如附记23所述的装置，其中，
所述指示信息包括：所述一个候选资源在所述至少两个候选资源中的识别信息。
25.如附记23所述的装置，其中，
所述指示信息包括：所述一个候选资源对应的所述第一时频资源在所述整数个第一时频资源中的识别信息。
26.如附记24或25所述的装置，其中，
所述计算单元根据所述指示信息与时间的对应关系获得时间同步。
27.如附记25所述的装置，其中，
所述计算单元还根据所述指示信息与所述网络设备在所述一个时间间隔中发送至少一个信号块中包含的信号块的数量，得到所述一个信号块的索引值。
28.如附记16或24所述的装置，其中，所述指示信息被承载在所述一个信息块中的PBCH的主系统信息块(MIB：Master Information Block)中或被承载在系统消息块1(SIB1：System Information Block1)中。
29.如附记16或24所述的装置，其中，所述指示信息被表示为所述信息块中的SSB与其它信号或信道的相对时域或频域映射关系。
30.如附记25所述的装置，其中，
所述指示信息由所述一个信息块中的PBCH的DMRS序列和/或所述PBCH的负载所指示。
31.一种通信系统，所述通信系统具有网络设备和终端设备，
其中，所述网络设备具有如附记1-13中任一项所述的发送装置，所述终端设备具有如附记14-30中任一项所述的接收装置。

Claims (20)

  1. 一种信号的发送装置，设置于网络设备，该发送装置包括：
    发送单元，其发送用于指示所述网络设备在一个时间间隔内发送的至少一个信息块中的一个信息块发送在所述一个时间间隔中的至少两个候选资源中的一个候选资源的指示信息。
  2. 所述权利要求1所述装置，其中，
    所述信息块中至少包括同步信号/物理广播信道块(SS/PBCH Block，SSB)。
  3. 如权利要求2所述的装置，其中，
    所述指示信息包括：所述至少一个信息块中第一个信息块的至少两个候选起始符号中的一个候选起始符号的识别信息。
  4. 如权利要求2所述的装置，其中，
    所述一个时间间隔包括整数个第一时频资源，所述第一时频资源用于发送所述信息块，
    所述至少两个候选资源是所述整数个第一时频资源中用于发送同一个索引值标识的所述信息块的至少两个所述第一时频资源。
  5. 如权利要求4所述的装置，其中，
    所述指示信息包括：所述一个候选资源在所述至少两个候选资源中的识别信息。
  6. 如权利要求4所述的装置，其中，
    所述指示信息包括：所述一个候选资源对应的所述第一时频资源在所述整数个第一时频资源中的识别信息。
  7. 如权利要求2所述的装置，其中，
    所述指示信息被承载在所述一个信息块中中或被承载在系统消息块1(SIB1：System Information Block1)中。
  8. 如权利要求2所述的装置，其中，
    所述指示信息被表示为所述信息块中的SSB与其它信号或信道的相对时域或频域映射关系。
  9. 如权利要求2所述的装置，其中，
    所述指示信息由所述一个信息块中的PBCH的DMRS序列和/或所述PBCH的负 载所指示。
  10. 一种信号的接收装置，设置于终端设备，所述接收装置包括：
    接收单元，其接收网络设备发送的指示信息，所述指示信息用于指示所述网络设备发送的、且被所述终端设备接收的一个信息块发送在一个时间间隔中的至少两个候选资源中的一个候选资源；以及
    计算单元，其根据所述指示信息获得时间同步。
  11. 如权利要求10所述装置，其中，
    所述信息块中至少包括同步信号/物理广播信道块(SS/PBCH Block，SSB)。
  12. 如权利要求11所述的装置，其中，
    所述指示信息包括：所述网络设备在一个时间间隔中发送的至少一个信息块中第一个信息块的至少两个候选起始符号中的一个候选起始符号的识别信息。
  13. 如权利要求11所述的装置，其中，所述一个时间间隔包括用于发送信息块的整数个第一时频资源，
    所述至少两个候选资源是所述整数个第一时频资源中用于发送所述同一个索引值标识的信息块的至少两个所述第一时频资源。
  14. 如权利要求13所述的装置，其中，
    所述指示信息包括：所述一个候选资源在所述至少两个候选资源中的识别信息，
    所述计算单元根据所述索引值，和所述指示信息与时间的对应关系获得时间同步。
  15. 如权利要求14所述的装置，其中，
    所述指示信息被承载在所述一个信息块包括的主系统信息块(MIB：Master Information Block)中或被承载在系统消息块1(SIB1：System Information Block1)中。
  16. 如权利要求14所述的装置，其中，所述指示信息被表示为所述信息块中的SSB与其它信号或信道的相对时域或频域映射关系。
  17. 如权利要求13所述的装置，其中，
    所述指示信息包括：所述一个候选资源对应的所述第一时频资源在所述整数个第一时频资源中的识别信息，
    所述计算单元根据所述指示信息与时间的对应关系获得时间同步。
  18. 如权利要求17所述的装置，其中，
    所述计算单元还根据所述指示信息与所述网络设备在所述一个时间间隔中发送至少一个信号块中包含的信号块的数量，得到所述一个信号块的索引值。
  19. 如权利要求17所述的装置，其中，
    所述指示信息由所述一个信息块中的PBCH的DMRS序列和/或所述PBCH的负载所指示。
  20. 一种通信系统，所述通信系统具有网络设备和终端设备，
    其中，所述网络设备具有如权利要求1-9中任一项所述的发送装置，所述终端设备具有如权利要求10-19中任一项所述的接收装置。
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