WO2019183791A1 - 同步信号块传输方法、设备及存储介质 - Google Patents

同步信号块传输方法、设备及存储介质 Download PDF

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Publication number
WO2019183791A1
WO2019183791A1 PCT/CN2018/080625 CN2018080625W WO2019183791A1 WO 2019183791 A1 WO2019183791 A1 WO 2019183791A1 CN 2018080625 W CN2018080625 W CN 2018080625W WO 2019183791 A1 WO2019183791 A1 WO 2019183791A1
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WO
WIPO (PCT)
Prior art keywords
ssb
window
transmission
time window
transmission window
Prior art date
Application number
PCT/CN2018/080625
Other languages
English (en)
French (fr)
Inventor
唐海
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BR112020018916-2A priority Critical patent/BR112020018916A2/pt
Priority to AU2018415674A priority patent/AU2018415674B2/en
Priority to PCT/CN2018/080625 priority patent/WO2019183791A1/zh
Priority to EP18912653.5A priority patent/EP3755107A4/en
Priority to JP2020547216A priority patent/JP7313368B2/ja
Priority to CN201880091074.7A priority patent/CN111837444A/zh
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CA3093979A priority patent/CA3093979A1/en
Priority to KR1020207027863A priority patent/KR102513018B1/ko
Priority to MX2020009899A priority patent/MX2020009899A/es
Priority to TW108110491A priority patent/TW201943234A/zh
Publication of WO2019183791A1 publication Critical patent/WO2019183791A1/zh
Priority to US17/019,018 priority patent/US11838881B2/en

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Classifications

    • 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
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/826—Involving periods of time
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • 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
    • 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
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • 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
    • 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
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/09—Management thereof
    • H04W28/0908—Management thereof based on time, e.g. for a critical period only

Definitions

  • the present invention relates to wireless network technologies, and in particular, to a synchronization signal block transmission method, device, and storage medium.
  • a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) form a Synchronization Signal Block (SSB).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the SSB uses periodic transmission. During the SSB transmission period, the SSB is limited to the transmission window of 5ms, and the maximum number of SSBs that can be transmitted is L.
  • the value of L varies according to the working frequency band. For example, for an operating band of less than 3 GHz, L is 4, for a working band of 3 GHz to 6 GHz, L is 8 and for a working band of 6 GHz to 52.6 GHz, L is 64.
  • FIG. 1 is a schematic diagram showing time slot distribution of existing SSBs in different subcarrier intervals and different working frequency bands.
  • the sub-carrier spacing is 15KHz and 30KHz respectively, and the distribution of time slots when L is 4 and 8, respectively.
  • the four SSBs are distributed. Within 2ms, a maximum of 2 SSBs are distributed every 1ms.
  • FIG. 2 is a schematic diagram showing the distribution of SSB candidate transmission locations in one slot when the existing subcarrier spacing is 15 kHz and 30 kHz, respectively.
  • a carrier sense multiple access/collision detection method (CSMA/CD, Carrier Sense Multiple Access/Collision Detection) and a carrier sense multiple access/collision avoidance method can be used.
  • CSMA/CA Carrier Sense Multiple Access/Collision Avoidance
  • the transmitting node can use the mechanism of Listening Before Talk (LBT) to perform channel monitoring and determine whether the channel is idle before transmitting the signal.
  • LBT Listening Before Talk
  • the carrier of the unlicensed frequency band needs to be intercepted.
  • the network device listens it can be a random number, and the generated random number is generated.
  • the signal may be sent, or the network device performs carrier sensing within a predetermined time window before the signal needs to be sent, if the carrier is detected within the time window. When the carrier is idle, the signal can be sent.
  • the network device Based on the LBT mechanism, in the 5ms transmission window in an SSB transmission period, if the network device does not detect the carrier idle before transmitting the SSB, the SSB will not be successfully transmitted, thereby reducing the transmission success rate of the SSB.
  • the present invention provides a synchronization signal block transmission method, device, and storage medium.
  • a synchronous signal block transmission method includes:
  • the transmission of the SSB is performed based on the increased time window.
  • a synchronous signal block transmission method includes:
  • the terminal performs the SSB reception based on the increased time window for transmitting the SSB based on the network side.
  • a network device includes: an expansion unit and a transmission unit;
  • the expansion unit is configured to increase a time window for transmitting the SSB when the SSB needs to be transmitted on the unlicensed frequency band;
  • the transmission unit is configured to perform transmission of the SSB based on the increased time window.
  • a terminal device includes: a receiving unit;
  • the receiving unit is configured to perform receiving of the SSB based on the added time window for transmitting the SSB on the network side.
  • a computer apparatus comprising a memory, a processor, and a computer program stored on the memory and operative on the processor, the processor implementing the method as described above.
  • a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements a method as described above.
  • the time window for transmitting the SSB may be first added, and then the SSB transmission may be performed based on the added time window. Increasing the time window for transmitting the SSB increases the transmission opportunity of the SSB, thereby improving the transmission success rate of the SSB.
  • FIG. 1 is a schematic diagram showing time slot distribution of existing SSBs in different subcarrier intervals and different working frequency bands.
  • FIG. 2 is a schematic diagram showing the distribution of SSB candidate transmission locations in one slot when the existing subcarrier spacing is 15 kHz and 30 kHz, respectively.
  • FIG. 3 is a flow chart of an embodiment of an SSB transmission method of the present invention.
  • FIG. 4 is a schematic diagram of a first SSB transmission window and a second SSB transmission window according to the present invention.
  • FIG. 5 is a schematic diagram of a first time window and a second time window according to the present invention.
  • FIG. 6 is a schematic structural diagram of an embodiment of a network device according to the present invention.
  • FIG. 7 is a schematic structural diagram of a structure of an embodiment of a terminal device according to the present invention.
  • FIG. 8 shows a block diagram of an exemplary computer system/server 12 suitable for use in implementing embodiments of the present invention.
  • FIG. 3 is a flow chart of an embodiment of an SSB transmission method of the present invention. As shown in FIG. 3, the following specific implementation manners are included.
  • the time window for transmitting the SSB is increased.
  • the transmission of the SSB is performed based on the increased time window.
  • the execution body of the above embodiment may be a network device.
  • the transmission opportunity of the SSB is increased, thereby solving or alleviating the problem that the network device needs to perform carrier sensing before transmitting the SSB in the unlicensed frequency band in the prior art.
  • the problem that the SSB cannot be successfully transmitted during an SSB transmission period improves the transmission success rate of the SSB.
  • the original SSB transmission window of the original predetermined duration is the existing 5 ms SSB transmission window, and an additional 5 ms SSB transmission window can be added on the basis of the existing 5 ms SSB transmission window.
  • the existing 5 ms SSB transmission window is referred to as a first SSB transmission window
  • the added 5 ms SSB transmission window is referred to as a second SSB transmission window.
  • the first SSB transmission window and the second SSB transmission window may be located in the same radio frame and respectively located in different half frames in the radio frame.
  • the first SSB transmission window may be located in the first half frame or the second half frame in the radio frame. If the first SSB transmission window is located in the first half frame, the second SSB transmission window may be located in the second half frame, if the first SSB The transmission window is located in the second half of the frame, and the second SSB transmission window can be located in the first half of the frame.
  • the first SSB transmission window and the second SSB transmission window are located in two adjacent radio frames and are located in two adjacent subframes.
  • the first SSB transmission window and the second SSB transmission window are respectively located in the radio frame a and the radio frame a', and the radio frame a and the radio frame a' are adjacent radio frames, and the first SSB transmission window is located in the radio frame a.
  • the second half of the frame, the second SSB transmission window is located in the first half of the radio frame a'.
  • the field indications of the SSBs having the same number appearing in the first SSB transmission window and the second SSB transmission window are different, and the other indications are the same.
  • the first SSB transmission window is consistent with the SSB candidate transmission location distribution in the second SSB transmission window, and/or the first SSB transmission window is consistent with the SSB actual transmission location distribution in the second SSB transmission window. That is, the first SSB transmission window may be consistent with the SSB candidate transmission location distribution in the second SSB transmission window, or the first SSB transmission window may be consistent with the SSB actual transmission location distribution in the second SSB transmission window, or An SSB transmission window is consistent with the SSB candidate transmission location distribution in the second SSB transmission window, and the first SSB transmission window is consistent with the SSB actual transmission location distribution in the second SSB transmission window, that is, the second SSB transmission window and the first The SSB transmission window is identical.
  • L is the maximum number of transmittable SSBs in an SSB transmission period, and the SSB candidate transmission location is set according to L.
  • the number of SSBs to be transmitted is likely to be less than L, which requires A part of the SSB candidate transmission position is selected as the actual transmission position of the SSB, and how to select it is a prior art.
  • the network device notifies the terminal of the actual transmission location of the SSB through the residual minimum system information (RMSI) or the RRC (Radio Resource Control) signaling, so that the terminal knows that the network device will be Which locations transmit the SSBs, perform corresponding processing, etc., because the distribution is consistent, the terminal can learn the actual SSB transmission location in the second SSB transmission window based on the actual SSB transmission location in the first SSB transmission window notified by the network device. .
  • RMSI residual minimum system information
  • RRC Radio Resource Control
  • FIG. 4 is a schematic diagram of a first SSB transmission window and a second SSB transmission window according to the present invention.
  • the working frequency band is 3 GHz to 6 GHz
  • the subcarrier spacing is 15 kHz
  • the first SSB transmission window is located in the first half of one radio frame
  • the second SSB transmission window is located in the radio frame.
  • the second half of the frame, and the second SSB transmission window is consistent with the SSB candidate transmission location distribution and the SSB actual transmission location distribution in the first SSB transmission window.
  • the network device can perform SSB transmission based on the added time window based on the existing LBT mechanism.
  • the sending attempt of the SSB in the first SSB transmission window may be performed first, and the SSBs to be transmitted are assumed to be two, which are SSB1 and SSB2 respectively, wherein the SSB1 is successfully transmitted, and the SSB2 is not successfully transmitted, then the continuation may be continued.
  • a transmission attempt is made at the actual transmission location of the SSB within the second SSB transmission window.
  • the SSB2 may be sent at the actual transmission location of the SSB corresponding to the SSB2, or the SSB1 and the SSB2 may be sent to the SSB1 and the SSB2 respectively, and the specific implementation manner is not limited. In this way, for each SSB, the transmission opportunity is doubled, thereby improving the transmission success rate of the SSB.
  • the network device may first determine whether it is necessary to increase the time window for transmitting the SSB, and if so, increase the time window for transmitting the SSB.
  • the network device also needs to notify the terminal of the determination result, such as notifying the terminal by broadcast information. If the determination result is yes, the terminal may perform the SSB reception based on the added time window. If the determination result is no, the terminal may perform the SSB reception based on the original time window, such as performing cell detection, cell time-frequency synchronization, Cell measurement, etc.
  • the network device can determine whether it is necessary to increase the time window for transmitting the SSB according to the current channel load condition. For example, the network device learns that the channel detection rate of the time period is higher according to the channel listening situation for a period of time, and then the system load on the carrier is determined to be lower, so that the second SSB transmission window may not be added, and vice versa. If the success rate of channel listening during the period is low, it can be determined that the system load on the carrier is high, thereby increasing the second SSB transmission window.
  • the time window for transmitting the SSB is increased.
  • the first SSB transmission window of the original predetermined duration is the existing 5 ms SSB transmission window, and the time window for transmitting the SSB can be increased in the first SSB transmission window.
  • the SSB adopts a floating transmission mode.
  • the duration of the first time window occupied by the SSB candidate transmission location is less than or equal to 1/2 of the duration of the first SSB transmission window, then the same duration as the first time window may be added after the first time window.
  • the second time window may be added after the first time window.
  • the second time window is consistent with the SSB candidate transmission location distribution within the first time window, and/or the second time window is consistent with the SSB actual transmission location distribution within the first time window.
  • the second time window is consistent with the SSB candidate transmission location distribution in the first time window, and the second time window is consistent with the SSB actual transmission location distribution in the first time window.
  • the duration of the first time window occupied by the SSB candidate transmission location is greater than 1/2 of the duration of the first SSB transmission window, but the duration of the third time window occupied by the SSB actual transmission location is less than or equal to the first SSB.
  • a fourth time window of the same duration as the third time window can be added after the third time window.
  • the third time window is consistent with the SSB candidate transmission location distribution in the fourth time window, and/or the third time window is consistent with the SSB actual transmission location distribution in the fourth time window.
  • the third time window is consistent with the SSB candidate transmission location distribution in the fourth time window, and the third time window is consistent with the SSB actual transmission location distribution in the fourth time window.
  • the duration of the first time window occupied by the SSB candidate transmission location is 4 ms, but the duration of the third time window occupied by the SSB actual transmission location is only 2 ms, that is, the actually transmitted SSB.
  • the network-based implementation only occurs in the first 2ms, then a second time window of 2ms can be added after the 2ms.
  • the network device in order for the terminal to obtain accurate frame timing based on the SSB transmitted within the increased time window, the network device also needs to notify the terminal of the time offset of the SSB transmitted within the increased time window with respect to the predetermined location.
  • the time offset relative to the predetermined location may include a time offset relative to a start position of a field in which the first SSB transmission window is located, or a time offset relative to an existing time position of the SSB having the same number .
  • the time offset relative to the start position of the field in which the first SSB transmission window is located is 2 ms.
  • the time offset is indicated by the bits reserved in the PBCH in the SSB.
  • one bit can be used to indicate two states: a, no time offset, b, 2ms time offset, or 2 bits for indication, indicating four states: a, no time offset, b , 1ms time offset, c, 2ms time offset, d, 3ms time offset.
  • the network device may also first determine whether it is necessary to increase the time window for transmitting the SSB, and if so, increase the time window for transmitting the SSB, and, regardless of the determination result, Whether or not the terminal needs to be notified, for example, the network device can notify the terminal by broadcasting information.
  • the network device can determine whether it is necessary to increase the time window for transmitting the SSB according to the current channel load condition. For example, the network device knows that the channel detection success rate is high according to the channel listening situation for a period of time, and then it can be determined that the system load on the carrier is low, so that the second time window or the fourth time may not be added.
  • the time window on the other hand, if the success rate of channel listening during the period is low, it can be determined that the system load on the carrier is high, thereby increasing the second time window or the fourth time window.
  • FIG. 6 is a schematic structural diagram of an embodiment of a network device according to the present invention. As shown in FIG. 6, the expansion unit 601 and the transmission unit 602 are included.
  • the expansion unit 601 is configured to increase a time window for transmitting the SSB when the SSB needs to be transmitted on the unlicensed frequency band.
  • the transmitting unit 602 is configured to perform transmission of the SSB based on the added time window.
  • the expansion unit 601 may add a second SSB transmission window of the same duration to the first predetermined SSB transmission window of the predetermined duration.
  • the first SSB transmission window and the second SSB transmission window may be located in the same radio frame and respectively located in different fields in the radio frame.
  • the first SSB transmission window and the second SSB transmission window are located in two adjacent radio frames and are located in two adjacent subframes.
  • the field indications of the SSBs having the same number appearing in the first SSB transmission window and the second SSB transmission window are different.
  • the first SSB transmission window is consistent with the SSB candidate transmission location distribution in the second SSB transmission window, and/or the first SSB transmission window is consistent with the SSB actual transmission location distribution in the second SSB transmission window.
  • the expansion unit 601 may also increase the time window for transmitting the SSB within the first SSB transmission window of the original predetermined duration.
  • the expansion unit 601 may add a first time window to the first time window.
  • the second time window of the same duration may be added.
  • the second time window is consistent with the SSB candidate transmission location distribution within the first time window, and/or the second time window is consistent with the SSB actual transmission location distribution within the first time window.
  • the transmission unit 601 may add a fourth time window that is the same as the duration of the third time window after the third time window.
  • the third time window is consistent with the SSB candidate transmission location distribution in the fourth time window, and/or the third time window is consistent with the SSB actual transmission location distribution in the fourth time window.
  • the transmission unit 602 also needs to notify the terminal of the time offset of the SSB transmitted within the increased time window with respect to the predetermined location, so that the terminal acquires an accurate frame timing according to the SSB.
  • the time offset relative to the predetermined location may include a time offset relative to the start position of the field in which the first SSB transmission window is located, or a time offset relative to the time position of the SSB having the same number.
  • Transmission unit 602 can utilize the bits reserved in the PBCH in the SSB to indicate the time offset.
  • the expansion unit 601 may also first determine whether it is necessary to increase the time window for transmitting the SSB, and if so, increase the time window for transmitting the SSB and notify the terminal.
  • the expansion unit 601 can determine whether it is necessary to increase the time window for transmitting the SSB according to the current channel load condition.
  • the transmission unit 602 can perform the transmission of the SSB based on the added time window based on the existing LBT mechanism.
  • FIG. 7 is a schematic structural diagram of a structure of an embodiment of a terminal device according to the present invention. As shown in FIG. 7, the receiving unit 701 is included.
  • the receiving unit 701 is configured to perform receiving of the SSB based on the added time window for transmitting the SSB on the network side.
  • the adding may include adding a second SSB transmission window of a predetermined duration to the first predetermined SSB transmission window of the predetermined duration.
  • the first SSB transmission window and the second SSB transmission window may be located in the same radio frame and respectively located in different fields in the radio frame.
  • the first SSB transmission window and the second SSB transmission window are located in two adjacent radio frames and are located in two adjacent subframes.
  • the field indications of the SSBs having the same number appearing in the first SSB transmission window and the second SSB transmission window are different.
  • the first SSB transmission window is consistent with the SSB candidate transmission location distribution in the second SSB transmission window, and/or the first SSB transmission window is consistent with the SSB actual transmission location distribution in the second SSB transmission window.
  • the receiving unit 701 may learn according to the actual transmission location of the SSB in the first SSB transmission window notified by the network side through the RMSI or RRC signaling. The actual transmission location of the SSB within the second SSB transmission window.
  • the adding may further include: increasing a time window for transmitting the SSB within the first SSB transmission window of the original predetermined duration.
  • the receiving unit 701 also needs to acquire the time offset of the SSB transmitted in the increased time window notified by the network side with respect to the predetermined position to obtain an accurate frame timing.
  • the time offset relative to the predetermined location may include a time offset relative to the start position of the field in which the first SSB transmission window is located, or a time offset relative to the time position of the SSB having the same number.
  • the terminal device may further include: an obtaining unit 700.
  • the obtaining unit 700 is configured to obtain a determination result that is notified by the network side after determining whether to increase a time window for transmitting the SSB, and if the determination result is yes, the receiving unit 701 may perform the SSB receiving according to the added time window, if If the determination result is no, the receiving unit 701 can perform the reception of the SSB based on the original time window.
  • FIG. 8 shows a block diagram of an exemplary computer system/server 12 suitable for use in implementing embodiments of the present invention.
  • the computer system/server 12 shown in FIG. 8 is merely an example and should not impose any limitation on the function and scope of use of the embodiments of the present invention.
  • computer system/server 12 is embodied in the form of a general purpose computing device.
  • the components of computer system/server 12 may include, but are not limited to, one or more processors (processing units) 16, memory 28, and a bus 18 that connects different system components, including memory 28 and processor 16.
  • processors processing units
  • bus 18 that connects different system components, including memory 28 and processor 16.
  • Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of a variety of bus structures.
  • these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA Bus, a Video Electronics Standards Association (VESA) local bus, and peripheral component interconnects ( PCI) bus.
  • ISA Industry Standard Architecture
  • MAC Micro Channel Architecture
  • VESA Video Electronics Standards Association
  • PCI peripheral component interconnects
  • Computer system/server 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by computer system/server 12, including both volatile and non-volatile media, removable and non-removable media.
  • Memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and/or cache memory 32.
  • Computer system/server 12 may further include other removable/non-removable, volatile/non-volatile computer system storage media.
  • storage system 34 may be used to read and write non-removable, non-volatile magnetic media (not shown in Figure 8, commonly referred to as "hard disk drives").
  • a disk drive for reading and writing to a removable non-volatile disk for example, a "floppy disk”
  • a removable non-volatile disk for example, a CD-ROM, a DVD-ROM
  • each drive can be coupled to bus 18 via one or more data medium interfaces.
  • Memory 28 can include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of various embodiments of the present invention.
  • a program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more applications, other programs Modules and program data, each of these examples or some combination may include an implementation of a network environment.
  • Program module 42 typically performs the functions and/or methods of the described embodiments of the present invention.
  • Computer system/server 12 may also be in communication with one or more external devices 14 (e.g., a keyboard, pointing device, display 24, etc.), and may also be in communication with one or more devices that enable a user to interact with the computer system/server 12. And/or in communication with any device (e.g., network card, modem, etc.) that enables the computer system/server 12 to communicate with one or more other computing devices. This communication can take place via an input/output (I/O) interface 22. Also, computer system/server 12 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and/or a public network, such as the Internet) through network adapter 20. As shown in FIG.
  • LAN local area network
  • WAN wide area network
  • public network such as the Internet
  • network adapter 20 communicates with other modules of computer system/server 12 via bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be utilized in conjunction with computer system/server 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, Tape drives and data backup storage systems.
  • the processor 16 executes various functional applications and data processing by running a program stored in the memory 28, for example, implementing the method in the embodiment shown in FIG.
  • the present invention also discloses a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the method of the embodiment shown in FIG.
  • the computer readable medium can be a computer readable signal medium or a computer readable storage medium.
  • the computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive lists) of computer readable storage media include: electrical connections having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read only memory (ROM), Erasable programmable read only memory (EPROM or flash memory), optical fiber, portable compact disk read only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the foregoing.
  • a computer readable storage medium can be any tangible medium that can contain or store a program, which can be used by or in connection with an instruction execution system, apparatus or device.
  • a computer readable signal medium may include a data signal that is propagated in the baseband or as part of a carrier, carrying computer readable program code. Such propagated data signals can take a variety of forms including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • the computer readable signal medium can also be any computer readable medium other than a computer readable storage medium, which can transmit, propagate, or transport a program for use by or in connection with the instruction execution system, apparatus, or device. .
  • Program code embodied on a computer readable medium can be transmitted by any suitable medium, including but not limited to wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
  • Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including an object oriented programming language such as Java, Smalltalk, C++, and conventional A procedural programming language - such as the "C" language or a similar programming language.
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer, partly on the remote computer, or entirely on the remote computer or server.
  • the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (eg, using an Internet service provider) Internet connection).
  • LAN local area network
  • WAN wide area network
  • Internet service provider Internet service provider
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a removable hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

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Abstract

本发明公开了同步信号块传输方法、设备及存储介质，其中方法包括：当需要在非授权频段上传输SSB时，增加用于传输SSB的时间窗口；基于增加后的时间窗口进行SSB的传输等。应用本发明所述方案，能够提升SSB的传输成功率等。

Description

同步信号块传输方法、设备及存储介质 技术领域
本发明涉及无线网络技术，特别涉及同步信号块传输方法、设备及存储介质。
背景技术
在5G系统中，主同步信号(PSS，Primary Synchronization Signal)、辅同步信号(SSS，Secondary Synchronization Signal)和物理广播信道(PBCH，Physical Broadcast Channel)共同构成同步信号块(SSB，Synchronization Signal Block)。
SSB采用周期传输，在SSB传输周期内，SSB被限制在5ms的传输窗口内，最大可传输SSB数目为L，根据工作频段的不同，L的取值也不同。比如，对于小于3GHz的工作频段，L取值为4，对于3GHz～6GHz的工作频段，L取值为8，对于6GHz～52.6GHz的工作频段，L取值为64。
在5ms的传输窗口内，对于不同的子载波间隔(SCS，Subcarrier Spacing)以及不同的工作频段，SSB的时隙分布也会不同。图1为现有不同子载波间隔以及不同工作频段下的SSB的时隙分布示意图。如图1所示，其中给出了子载波间隔分别为15KHz和30KHz，L分别为4和8时的时隙分布情况，以子载波间隔为15KHz，L＝4为例，这4个SSB分布于2ms之内，每1ms内最多分布2个SSB。
相应地，图2为现有子载波间隔分别为15KHz和30KHz时一个时隙内的SSB候选传输位置分布示意图。
目前的5G NR技术中，在非授权(unlicensed)频段上，可以采用载波监听多路访问/冲突检测方法(CSMA/CD，Carrier Sense Multiple Access/Collision Detection)以及载波监听多路访问/冲突避免方法(CSMA/CA，Carrier Sense Multiple Access/Collision Avoidance)，发射节点在发射信号之前可以利用先听后说(LBT，Listen Before Talk)的机制，进行信道监听，判断信道是否空闲。
比如，在非授权频段，若网络设备需要向终端发送信号，则需要对非授权频段的载波进行侦听，具体实现时，网络设备在侦听之前，可以先生成随机数，在生成的随机数对应的时间范围内，若一直侦听到载波空闲，则可以发送信号，或者，网络设备在需要发送信号之前的一个预定时长的时间窗口内进行载波侦听，若在该时间窗口内侦听到载波空闲，则可以发送信号。
基于LBT的机制，在一个SSB传输周期内的5ms传输窗口，若网络设备在发送SSB之前未侦听到载波空闲，则SSB将不能发送成功，从而降低了SSB的传输 成功率。
发明内容
有鉴于此，本发明提供了同步信号块传输方法、设备及存储介质。
具体技术方案如下：
一种同步信号块传输方法，包括：
当需要在非授权频段上传输SSB时，增加用于传输所述SSB的时间窗口；
基于增加后的时间窗口进行SSB的传输。
一种同步信号块传输方法，包括：
终端基于网络侧进行增加后的用于传输SSB的时间窗口，进行SSB的接收。
一种网络设备，包括：扩充单元以及传输单元；
所述扩充单元，用于当需要在非授权频段上传输SSB时，增加用于传输所述SSB的时间窗口；
所述传输单元，用于基于增加后的时间窗口进行SSB的传输。
一种终端设备，包括：接收单元；
所述接收单元，用于基于网络侧进行增加后的用于传输SSB的时间窗口，进行SSB的接收。
一种计算机设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述程序时实现如以上所述的方法。
一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现如以上所述的方法。
基于上述介绍可以看出，采用本发明所述方案，当需要在非授权频段上传输SSB时，可首先增加用于传输SSB的时间窗口，之后可基于增加后的时间窗口进行SSB的传输，通过增加用于传输SSB的时间窗口，增大了SSB的传输机会，进而提升了SSB的传输成功率等。
附图说明
图1为现有不同子载波间隔以及不同工作频段下的SSB的时隙分布示意图。
图2为现有子载波间隔分别为15KHz和30KHz时一个时隙内的SSB候选传输位置分布示意图。
图3为本发明SSB传输方法实施例的流程图。
图4为本发明所述第一SSB传输窗口与第二SSB传输窗口的示意图。
图5为本发明所述第一时间窗口与第二时间窗口的示意图。
图6为本发明所述网络设备实施例的组成结构示意图。
图7为本发明所述终端设备实施例的组成结构示意图。
图8示出了适于用来实现本发明实施方式的示例性计算机系统/服务器12的框图。
具体实施方式
为了使本发明的技术方案更加清楚、明白，以下参照附图并举实施例，对本发明所述方案进行进一步说明。
显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
图3为本发明SSB传输方法实施例的流程图。如图3所示，包括以下具体实现方式。
在301中，当需要在非授权频段上传输SSB时，增加用于传输SSB的时间窗口。
在302中，基于增加后的时间窗口进行SSB的传输。
上述实施例的执行主体可为网络设备。
上述实施例中，通过增加用于传输SSB的时间窗口，增大了SSB的传输机会，从而解决或缓解了现有技术中非授权频段上由于网络设备在发送SSB之前需要进行载波侦听导致的一个SSB传输周期内SSB不能成功传输的问题，提升了SSB的传输成功率等。
本实施例中提供了两种具体实现方式，以下分别进行介绍。
一)方式一
在原有的预定时长的第一SSB传输窗口的基础上，增加一个同样时长的第二SSB传输窗口。
原有的预定时长的第一SSB传输窗口即为现有的5ms的SSB传输窗口，可在现有的5ms的SSB传输窗口的基础上，额外增加一个5ms的SSB传输窗口。为便于区分，将现有的5ms的SSB传输窗口称为第一SSB传输窗口，将增加的5ms的SSB传输窗口称为第二SSB传输窗口。
其中，第一SSB传输窗口与第二SSB传输窗口可位于同一无线帧中，并分别位于该无线帧中的不同半帧。
按照现有方式，第一SSB传输窗口可以位于无线帧中的前半帧或后半帧，若第 一SSB传输窗口位于前半帧，那么第二SSB传输窗口则可位于后半帧，若第一SSB传输窗口位于后半帧，那么第二SSB传输窗口则可位于前半帧。
或者，第一SSB传输窗口与第二SSB传输窗口位于相邻两个无线帧中，且位于相邻的两个半帧中。
比如，第一SSB传输窗口和第二SSB传输窗口分别位于无线帧a和无线帧a’中，无线帧a和无线帧a’为相邻的无线帧，第一SSB传输窗口位于无线帧a中的后半帧，第二SSB传输窗口位于无线帧a’中的前半帧。
较佳地，出现在第一SSB传输窗口以及第二SSB传输窗口中的具有相同编号的SSB的半帧指示不同，其它指示均相同。
另外，第一SSB传输窗口与第二SSB传输窗口内的SSB候选传输位置分布一致，和/或，第一SSB传输窗口与第二SSB传输窗口内的SSB实际传输位置分布一致。也就是说，第一SSB传输窗口与第二SSB传输窗口内的SSB候选传输位置分布可以一致，或者，第一SSB传输窗口与第二SSB传输窗口内的SSB实际传输位置分布一致，或者，第一SSB传输窗口与第二SSB传输窗口内的SSB候选传输位置分布一致，而且，第一SSB传输窗口与第二SSB传输窗口内的SSB实际传输位置分布一致，即第二SSB传输窗口与第一SSB传输窗口完全一致。
如前所述，L为一个SSB传输周期内最大可传输SSB数目，SSB候选传输位置即是按照L进行设定的，但在实际应用中，待传输的SSB数目很可能小于L，这就需要在SSB候选传输位置中选出一部分作为SSB实际传输位置，如何进行选择为现有技术。
现有技术中，网络设备会通过剩余最小系统信息(RMSI，Remaining Minimum System Infromation)或无线资源控制(RRC，Radio Resource Control)信令将SSB实际传输位置通知给终端，以便终端获知网络设备将在哪些位置传输SSB，从而进行相应的处理等，由于分布一致，那么终端可基于网络设备通知的第一SSB传输窗口内的SSB实际传输位置，获知增加的第二SSB传输窗口内的SSB实际传输位置。
图4为本发明所述第一SSB传输窗口与第二SSB传输窗口的示意图。如图4所示，假设工作频段为3GHz～6GHz，子载波间隔为15KHz，L＝8，并假设第一SSB传输窗口位于一个无线帧的前半帧，那么第二SSB传输窗口则位于该无线帧的后半帧，而且，第二SSB传输窗口与第一SSB传输窗口内的SSB候选传输位置分布以及SSB实际传输位置分布均一致。
网络设备可以基于现有的LBT机制，基于增加后的时间窗口进行SSB的传输。
具体地，可先在第一SSB传输窗口内的SSB实际传输位置进行发送尝试，假设待传输的SSB为2个，分别为SSB1和SSB2，其中SSB1传输成功，而SSB2未传输成功，那么可继续在第二SSB传输窗口内的SSB实际传输位置进行发送尝试。比如，可以在SSB2对应的SSB实际传输位置，对SSB2进行发送尝试，或者，分别在SSB1和SSB2对应的SSB实际传输位置，分别对SSB1和SSB2进行发送尝试，具体实现方式不限。这样，对于每个SSB来说，均增加了一倍的传输机会，从而提升了SSB的传输成功率。
另外，在增加用于传输SSB的时间窗口之前，网络设备还可先确定是否需要增加用于传输SSB的时间窗口，若是，则增加用于传输SSB的时间窗口。
网络设备还需要将确定结果通知给终端，如通过广播信息通知给终端。若确定结果为是，则终端可基于增加后的时间窗口进行SSB的接收，若确定结果为否，则终端可基于原有的时间窗口进行SSB的接收，如进行小区检测、小区时频同步、小区测量等。
网络设备可根据当前的信道负荷情况，确定是否需要增加用于传输SSB的时间窗口。比如，网络设备根据一段时间的信道侦听情况，获知该段时间的信道侦听的成功率较高，那么则可判定载波上的系统负荷较低，从而可以不增加第二SSB传输窗口，反之，若该段时间的信道侦听的成功率较低，则可判定载波上的系统负荷较高，从而增加第二SSB传输窗口。
二)方式二
在原有的预定时长的第一SSB传输窗口内，增加传输SSB的时间窗口。
原有的预定时长的第一SSB传输窗口即为现有的5ms的SSB传输窗口，可在第一SSB传输窗口内，增加传输SSB的时间窗口。在第一SSB传输窗口内，SSB采用浮动式(floating)的传输方式。
比如，若SSB候选传输位置所占用的第一时间窗口的时长小于或等于第一SSB传输窗口的时长的1/2，那么可在第一时间窗口之后增设一个与第一时间窗口的时长相同的第二时间窗口。
第二时间窗口与第一时间窗口内的SSB候选传输位置分布一致，和/或，第二时间窗口与第一时间窗口内的SSB实际传输位置分布一致。较佳地，第二时间窗口与第一时间窗口内的SSB候选传输位置分布一致，而且，第二时间窗口与第一时间窗口内的SSB实际传输位置分布一致。
图5为本发明所述第一时间窗口与第二时间窗口的示意图。如图5所示，假设 子载波间隔为15KHz，L＝4，SSB候选传输位置所占用的第一时间窗口的时长为2ms，那么可在第一时间窗口之后增设一个时长为2ms的第二时间窗口。
再比如，若SSB候选传输位置所占用的第一时间窗口的时长大于第一SSB传输窗口的时长的1/2，但SSB实际传输位置所占用的第三时间窗口的时长小于或等于第一SSB传输窗口的时长的1/2，那么可在第三时间窗口之后增设一个与第三时间窗口的时长相同的第四时间窗口。
第三时间窗口与第四时间窗口内的SSB候选传输位置分布一致，和/或，第三时间窗口与第四时间窗口内的SSB实际传输位置分布一致。较佳地，第三时间窗口与第四时间窗口内的SSB候选传输位置分布一致，而且，第三时间窗口与第四时间窗口内的SSB实际传输位置分布一致。
假设子载波间隔为15KHz，L＝8，SSB候选传输位置所占用的第一时间窗口的时长为4ms，但SSB实际传输位置所占用的第三时间窗口的时长仅为2ms，即实际传输的SSB基于网络的实现仅出现在前2ms，那么则可在所述2ms之后增设一个2ms的第四时间窗口。
另外，为了使终端可以根据在增加的时间窗口内传输的SSB获得准确的帧定时，网络设备还需要将在增加的时间窗口内传输的SSB相对于预定位置的时间偏移通知给终端。
所述相对于预定位置的时间偏移可以包括：相对于第一SSB传输窗口所在半帧起始位置的时间偏移，或者，相对于现有的具有相同编号的SSB的时间位置的时间偏移。如上述示例中，相对于第一SSB传输窗口所在半帧起始位置的时间偏移为2ms。
较佳地，可以利用SSB中PBCH中预留的比特位，指示所述时间偏移。比如，可以采用1比特进行指示，指示两种状态：a、没有时间偏移，b、2ms的时间偏移，或者，采用2比特进行指示，指示四种状态：a，没有时间偏移，b、1ms的时间偏移，c、2ms的时间偏移，d、3ms的时间偏移。
另外，在增加用于传输SSB的时间窗口之前，网络设备还可先确定是否需要增加用于传输SSB的时间窗口，若是，则增加用于传输SSB的时间窗口，并且，无论确定结果为是还是否，均需要通知终端，比如，网络设备可通过广播信息通知给终端。
网络设备可根据当前的信道负荷情况，确定是否需要增加用于传输SSB的时间窗口。比如，网络设备根据一段时间的信道侦听情况，获知该段时间的信道侦听的 成功率较高，那么则可判定载波上的系统负荷较低，从而可以不增加第二时间窗口或第四时间窗口，反之，若该段时间的信道侦听的成功率较低，则可判定载波上的系统负荷较高，从而增加第二时间窗口或第四时间窗口。
以上是关于方法实施例的介绍，以下通过装置实施例，对本发明所述方案进行进一步说明。
图6为本发明所述网络设备实施例的组成结构示意图。如图6所示，包括：扩充单元601以及传输单元602。
扩充单元601，用于当需要在非授权频段上传输SSB时，增加用于传输SSB的时间窗口。
传输单元602，用于基于增加后的时间窗口进行SSB的传输。
具体地，扩充单元601可在原有的预定时长的第一SSB传输窗口的基础上，增加一个同样时长的第二SSB传输窗口。
第一SSB传输窗口与第二SSB传输窗口可位于同一无线帧中，并分别位于无线帧中的不同半帧。或者，第一SSB传输窗口与第二SSB传输窗口位于相邻两个无线帧中，且位于相邻的两个半帧中。较佳地，出现在第一SSB传输窗口以及第二SSB传输窗口中的具有相同编号的SSB的半帧指示不同。
另外，第一SSB传输窗口与第二SSB传输窗口内的SSB候选传输位置分布一致，和/或，第一SSB传输窗口与第二SSB传输窗口内的SSB实际传输位置分布一致。
或者，扩充单元601还可在原有的预定时长的第一SSB传输窗口内，增加传输SSB的时间窗口。
比如，若SSB候选传输位置所占用的第一时间窗口的时长小于或等于第一SSB传输窗口的时长的1/2，则扩充单元601可在第一时间窗口之后增设一个与第一时间窗口的时长相同的第二时间窗口。
第二时间窗口与第一时间窗口内的SSB候选传输位置分布一致，和/或，第二时间窗口与第一时间窗口内的SSB实际传输位置分布一致。
再比如，若SSB候选传输位置所占用的第一时间窗口的时长大于第一SSB传输窗口的时长的1/2，但SSB实际传输位置所占用的第三时间窗口的时长小于或等于第一SSB传输窗口的时长的1/2，则扩充单元601可在第三时间窗口之后增设一个与第三时间窗口的时长相同的第四时间窗口。
第三时间窗口与第四时间窗口内的SSB候选传输位置分布一致，和/或，第三时间窗口与第四时间窗口内的SSB实际传输位置分布一致。
传输单元602还需要将在增加的时间窗口内传输的SSB相对于预定位置的时间偏移通知终端，以便终端根据SSB获取准确的帧定时。
相对于预定位置的时间偏移可包括：相对于第一SSB传输窗口所在半帧起始位置的时间偏移，或者，相对于具有相同编号的SSB的时间位置的时间偏移。
传输单元602可利用SSB中PBCH中预留的比特位，指示时间偏移。
另外，在实际应用中，扩充单元601还可首先确定是否需要增加用于传输SSB的时间窗口，若是，则增加用于传输SSB的时间窗口，并通知终端。
比如，扩充单元601可根据当前的信道负荷情况，确定是否需要增加用于传输SSB的时间窗口。
传输单元602可基于现有的LBT机制，基于增加后的时间窗口进行SSB的传输。
图7为本发明所述终端设备实施例的组成结构示意图。如图7所示，包括：接收单元701。
接收单元701，用于基于网络侧进行增加后的用于传输SSB的时间窗口，进行SSB的接收。
所述增加可包括：在原有的预定时长的第一SSB传输窗口的基础上，增加一个预定时长的第二SSB传输窗口。
第一SSB传输窗口与第二SSB传输窗口可位于同一无线帧中，并分别位于无线帧中的不同半帧。或者，第一SSB传输窗口与第二SSB传输窗口位于相邻两个无线帧中，且位于相邻的两个半帧中。较佳地，出现在第一SSB传输窗口以及第二SSB传输窗口中的具有相同编号的SSB的半帧指示不同。
另外，第一SSB传输窗口与第二SSB传输窗口内的SSB候选传输位置分布一致，和/或，第一SSB传输窗口与第二SSB传输窗口内的SSB实际传输位置分布一致。
当第一SSB传输窗口与第二SSB传输窗口内的SSB实际传输位置分布一致时，接收单元701可根据网络侧通过RMSI或RRC信令通知的第一SSB传输窗口内的SSB实际传输位置，获知第二SSB传输窗口内的SSB实际传输位置。
或者，所述增加还可包括：在原有的预定时长的第一SSB传输窗口内，增加传 输SSB的时间窗口。
这种情况下，接收单元701还需要获取网络侧通知的在增加的时间窗口内传输的SSB相对于预定位置的时间偏移，以获得准确的帧定时。相对于预定位置的时间偏移可包括：相对于第一SSB传输窗口所在半帧起始位置的时间偏移，或者，相对于具有相同编号的SSB的时间位置的时间偏移。
另外，如图7所示，终端设备中还可进一步包括：获取单元700。
获取单元700，用于获取网络侧在确定是否需要增加用于传输SSB的时间窗口后通知的确定结果，若确定结果为是，则接收单元701可基于增加后的时间窗口进行SSB的接收，若确定结果为否，则接收单元701可基于原有的时间窗口进行SSB的接收。
图6和图7所示装置实施例的具体工作流程请参照前述方法实施例中的相应说明，不再赘述。
总之，采用上述装置实施例所述方案，通过增加用于传输SSB的时间窗口，增大了SSB的传输机会，进而提升了SSB的传输成功率等。
图8示出了适于用来实现本发明实施方式的示例性计算机系统/服务器12的框图。图8显示的计算机系统/服务器12仅仅是一个示例，不应对本发明实施例的功能和使用范围带来任何限制。
如图8所示，计算机系统/服务器12以通用计算设备的形式表现。计算机系统/服务器12的组件可以包括但不限于：一个或者多个处理器(处理单元)16，存储器28，连接不同系统组件(包括存储器28和处理器16)的总线18。
总线18表示几类总线结构中的一种或多种，包括存储器总线或者存储器控制器，外围总线，图形加速端口，处理器或者使用多种总线结构中的任意总线结构的局域总线。举例来说，这些体系结构包括但不限于工业标准体系结构(ISA)总线，微通道体系结构(MAC)总线，增强型ISA总线、视频电子标准协会(VESA)局域总线以及外围组件互连(PCI)总线。
计算机系统/服务器12典型地包括多种计算机系统可读介质。这些介质可以是任何能够被计算机系统/服务器12访问的可用介质，包括易失性和非易失性介质，可移动的和不可移动的介质。
存储器28可以包括易失性存储器形式的计算机系统可读介质，例如随机存取存储器(RAM)30和/或高速缓存存储器32。计算机系统/服务器12可以进一步包括其它可 移动/不可移动的、易失性/非易失性计算机系统存储介质。仅作为举例，存储系统34可以用于读写不可移动的、非易失性磁介质(图8未显示，通常称为“硬盘驱动器”)。尽管图8中未示出，可以提供用于对可移动非易失性磁盘(例如“软盘”)读写的磁盘驱动器，以及对可移动非易失性光盘(例如CD-ROM,DVD-ROM或者其它光介质)读写的光盘驱动器。在这些情况下，每个驱动器可以通过一个或者多个数据介质接口与总线18相连。存储器28可以包括至少一个程序产品，该程序产品具有一组(例如至少一个)程序模块，这些程序模块被配置以执行本发明各实施例的功能。
具有一组(至少一个)程序模块42的程序/实用工具40，可以存储在例如存储器28中，这样的程序模块42包括——但不限于——操作系统、一个或者多个应用程序、其它程序模块以及程序数据，这些示例中的每一个或某种组合中可能包括网络环境的实现。程序模块42通常执行本发明所描述的实施例中的功能和/或方法。
计算机系统/服务器12也可以与一个或多个外部设备14(例如键盘、指向设备、显示器24等)通信，还可与一个或者多个使得用户能与该计算机系统/服务器12交互的设备通信，和/或与使得该计算机系统/服务器12能与一个或多个其它计算设备进行通信的任何设备(例如网卡，调制解调器等等)通信。这种通信可以通过输入/输出(I/O)接口22进行。并且，计算机系统/服务器12还可以通过网络适配器20与一个或者多个网络(例如局域网(LAN)，广域网(WAN)和/或公共网络，例如因特网)通信。如图8所示，网络适配器20通过总线18与计算机系统/服务器12的其它模块通信。应当明白，尽管图中未示出，可以结合计算机系统/服务器12使用其它硬件和/或软件模块，包括但不限于：微代码、设备驱动器、冗余处理单元、外部磁盘驱动阵列、RAID系统、磁带驱动器以及数据备份存储系统等。
处理器16通过运行存储在存储器28中的程序，从而执行各种功能应用以及数据处理，例如实现图3所示实施例中的方法。
本发明同时公开了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时将实现如图3所示实施例中的方法。
可以采用一个或多个计算机可读的介质的任意组合。计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质。计算机可读存储介质例如可以是——但不限于——电、磁、光、电磁、红外线、或半导体的系统、装置或器件，或者任意以上的组合。计算机可读存储介质的更具体的例子(非穷举的列表)包括：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机存取存储器(RAM)、只读存储器(ROM)、 可擦式可编程只读存储器(EPROM或闪存)、光纤、便携式紧凑磁盘只读存储器(CD-ROM)、光存储器件、磁存储器件、或者上述的任意合适的组合。在本文件中，计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。
计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式，包括——但不限于——电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。
计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括——但不限于——无线、电线、光缆、RF等等，或者上述的任意合适的组合。
可以以一种或多种程序设计语言或其组合来编写用于执行本发明操作的计算机程序代码，所述程序设计语言包括面向对象的程序设计语言—诸如Java、Smalltalk、C++，还包括常规的过程式程序设计语言—诸如”C”语言或类似的程序设计语言。程序代码可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中，远程计算机可以通过任意种类的网络——包括局域网(LAN)或广域网(WAN)—连接到用户计算机，或者，可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连接)。
在本发明所提供的几个实施例中，应该理解到，所揭露的装置和方法等，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机 设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM)、随机存取存储器(RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。

Claims (54)

  1. 一种同步信号块传输方法，其特征在于，包括：
    当需要在非授权频段上传输同步信号块SSB时，增加用于传输所述SSB的时间窗口；
    基于增加后的时间窗口进行SSB的传输。
  2. 根据权利要求1所述的方法，其特征在于，
    所述增加用于传输所述SSB的时间窗口包括：
    在原有的预定时长的第一SSB传输窗口的基础上，增加一个所述预定时长的第二SSB传输窗口。
  3. 根据权利要求2所述的方法，其特征在于，
    所述第一SSB传输窗口与所述第二SSB传输窗口位于同一无线帧中，并分别位于所述无线帧中的不同半帧；
    或者，所述第一SSB传输窗口与所述第二SSB传输窗口位于相邻两个无线帧中，且位于相邻的两个半帧中。
  4. 根据权利要求3所述的方法，其特征在于，
    出现在所述第一SSB传输窗口以及所述第二SSB传输窗口中的具有相同编号的SSB的半帧指示不同。
  5. 根据权利要求2所述的方法，其特征在于，
    所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB候选传输位置分布一致；
    和/或，所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB实际传输位置分布一致。
  6. 根据权利要求1所述的方法，其特征在于，
    所述增加用于传输所述SSB的时间窗口包括：
    在原有的预定时长的第一SSB传输窗口内，增加传输所述SSB的时间窗口。
  7. 根据权利要求6所述的方法，其特征在于，
    所述在第一SSB传输窗口内，增加传输所述SSB的时间窗口包括：
    若SSB候选传输位置所占用的第一时间窗口的时长小于或等于所述第一SSB传输窗口的时长的1/2，则在所述第一时间窗口之后增设一个与所述第一时间窗口 的时长相同的第二时间窗口。
  8. 根据权利要求7所述的方法，其特征在于，
    所述第二时间窗口与所述第一时间窗口内的SSB候选传输位置分布一致；
    和/或，所述第二时间窗口与所述第一时间窗口内的SSB实际传输位置分布一致。
  9. 根据权利要求6所述的方法，其特征在于，
    所述在第一SSB传输窗口内，增加传输所述SSB的时间窗口包括：
    若SSB候选传输位置所占用的第一时间窗口的时长大于所述第一SSB传输窗口的时长的1/2，但SSB实际传输位置所占用的第三时间窗口的时长小于或等于所述第一SSB传输窗口的时长的1/2，则在所述第三时间窗口之后增设一个与所述第三时间窗口的时长相同的第四时间窗口。
  10. 根据权利要求9所述的方法，其特征在于，
    所述第三时间窗口与所述第四时间窗口内的SSB候选传输位置分布一致；
    和/或，所述第三时间窗口与所述第四时间窗口内的SSB实际传输位置分布一致。
  11. 根据权利要求6所述的方法，其特征在于，
    该方法进一步包括：将在增加的所述时间窗口内传输的SSB相对于预定位置的时间偏移通知终端。
  12. 根据权利要求11所述的方法，其特征在于，
    所述相对于预定位置的时间偏移包括：
    相对于所述第一SSB传输窗口所在半帧起始位置的时间偏移；
    或者，相对于具有相同编号的SSB的时间位置的时间偏移。
  13. 根据权利要求11所述的方法，其特征在于，
    将所述时间偏移通知终端包括：
    利用所述SSB中物理广播信道PBCH中预留的比特位，指示所述时间偏移。
  14. 根据权利要求1所述的方法，其特征在于，
    所述增加用于传输所述SSB的时间窗口之前，进一步包括：
    确定是否需要增加用于传输所述SSB的时间窗口，若是，则增加用于传输所述SSB的时间窗口，并通知终端。
  15. 根据权利要求14所述的方法，其特征在于，
    所述确定是否需要增加用于传输所述SSB的时间窗口包括：
    根据当前的信道负荷情况，确定是否需要增加用于传输所述SSB的时间窗口。
  16. 根据权利要求1所述的方法，其特征在于，
    所述基于增加后的时间窗口进行SSB的传输包括：
    基于先听后说LBT机制，基于增加后的时间窗口进行SSB的传输。
  17. 一种同步信号块传输方法，其特征在于，包括：
    终端基于网络侧进行增加后的用于传输同步信号块SSB的时间窗口，进行SSB的接收。
  18. 根据权利要求17所述的方法，其特征在于，
    所述增加包括：在原有的预定时长的第一SSB传输窗口的基础上，增加一个所述预定时长的第二SSB传输窗口。
  19. 根据权利要求18所述的方法，其特征在于，
    所述第一SSB传输窗口与所述第二SSB传输窗口位于同一无线帧中，并分别位于所述无线帧中的不同半帧；
    或者，所述第一SSB传输窗口与所述第二SSB传输窗口位于相邻两个无线帧中，且位于相邻的两个半帧中。
  20. 根据权利要求19所述的方法，其特征在于，
    出现在所述第一SSB传输窗口以及所述第二SSB传输窗口中的具有相同编号的SSB的半帧指示不同。
  21. 根据权利要求18所述的方法，其特征在于，
    所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB候选传输位置分布一致；
    和/或，所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB实际传输位置分布一致。
  22. 根据权利要求21所述的方法，其特征在于，
    该方法进一步包括：当所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB实际传输位置分布一致时，所述终端根据网络侧通过剩余最小系统信息RMSI或无线资源控制RRC信令通知的所述第一SSB传输窗口内的SSB实际传输位置， 获知所述第二SSB传输窗口内的SSB实际传输位置。
  23. 根据权利要求17所述的方法，其特征在于，
    所述增加包括：在原有的预定时长的第一SSB传输窗口内，增加传输所述SSB的时间窗口。
  24. 根据权利要求23所述的方法，其特征在于，
    该方法进一步包括：所述终端获取网络侧通知的在增加的所述时间窗口内传输的SSB相对于预定位置的时间偏移。
  25. 根据权利要求24所述的方法，其特征在于，
    所述相对于预定位置的时间偏移包括：
    相对于所述第一SSB传输窗口所在半帧起始位置的时间偏移；
    或者，相对于具有相同编号的SSB的时间位置的时间偏移。
  26. 根据权利要求17所述的方法，其特征在于，
    该方法进一步包括：
    所述终端获取网络侧在确定是否需要增加用于传输所述SSB的时间窗口后通知的确定结果；
    若确定结果为是，则基于增加后的时间窗口进行SSB的接收；
    若确定结果为否，则基于原有的时间窗口进行SSB的接收。
  27. 一种网络设备，其特征在于，包括：扩充单元以及传输单元；
    所述扩充单元，用于当需要在非授权频段上传输同步信号块SSB时，增加用于传输所述SSB的时间窗口；
    所述传输单元，用于基于增加后的时间窗口进行SSB的传输。
  28. 根据权利要求27所述的网络设备，其特征在于，
    所述扩充单元在原有的预定时长的第一SSB传输窗口的基础上，增加一个所述预定时长的第二SSB传输窗口。
  29. 根据权利要求28所述的网络设备，其特征在于，
    所述第一SSB传输窗口与所述第二SSB传输窗口位于同一无线帧中，并分别位于所述无线帧中的不同半帧；
    或者，所述第一SSB传输窗口与所述第二SSB传输窗口位于相邻两个无线帧中， 且位于相邻的两个半帧中。
  30. 根据权利要求29所述的网络设备，其特征在于，
    出现在所述第一SSB传输窗口以及所述第二SSB传输窗口中的具有相同编号的SSB的半帧指示不同。
  31. 根据权利要求28所述的网络设备，其特征在于，
    所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB候选传输位置分布一致；
    和/或，所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB实际传输位置分布一致。
  32. 根据权利要求27所述的网络设备，其特征在于，
    所述扩充单元中在原有的预定时长的第一SSB传输窗口内，增加传输所述SSB的时间窗口。
  33. 根据权利要求32所述的网络设备，其特征在于，
    若SSB候选传输位置所占用的第一时间窗口的时长小于或等于所述第一SSB传输窗口的时长的1/2，则所述扩充单元在所述第一时间窗口之后增设一个与所述第一时间窗口的时长相同的第二时间窗口。
  34. 根据权利要求33所述的网络设备，其特征在于，
    所述第二时间窗口与所述第一时间窗口内的SSB候选传输位置分布一致；
    和/或，所述第二时间窗口与所述第一时间窗口内的SSB实际传输位置分布一致。
  35. 根据权利要求32所述的网络设备，其特征在于，
    若SSB候选传输位置所占用的第一时间窗口的时长大于所述第一SSB传输窗口的时长的1/2，但SSB实际传输位置所占用的第三时间窗口的时长小于或等于所述第一SSB传输窗口的时长的1/2，则所述扩充单元在所述第三时间窗口之后增设一个与所述第三时间窗口的时长相同的第四时间窗口。
  36. 根据权利要求35所述的网络设备，其特征在于，
    所述第三时间窗口与所述第四时间窗口内的SSB候选传输位置分布一致；
    和/或，所述第三时间窗口与所述第四时间窗口内的SSB实际传输位置分布一致。
  37. 根据权利要求32所述的网络设备，其特征在于，
    所述传输单元进一步用于，将在增加的所述时间窗口内传输的SSB相对于预定位置的时间偏移通知终端。
  38. 根据权利要求37所述的网络设备，其特征在于，
    所述相对于预定位置的时间偏移包括：
    相对于所述第一SSB传输窗口所在半帧起始位置的时间偏移；
    或者，相对于具有相同编号的SSB的时间位置的时间偏移。
  39. 根据权利要求37所述的网络设备，其特征在于，
    所述传输单元利用所述SSB中物理广播信道PBCH中预留的比特位，指示所述时间偏移。
  40. 根据权利要求27所述的网络设备，其特征在于，
    所述扩充单元进一步用于，确定是否需要增加用于传输所述SSB的时间窗口，若是，则增加用于传输所述SSB的时间窗口，并通知终端。
  41. 根据权利要求40所述的网络设备，其特征在于，
    所述扩充单元根据当前的信道负荷情况，确定是否需要增加用于传输所述SSB的时间窗口。
  42. 根据权利要求27所述的网络设备，其特征在于，
    所述传输单元基于先听后说LBT机制，基于增加后的时间窗口进行SSB的传输。
  43. 一种终端设备，其特征在于，包括：接收单元；
    所述接收单元，用于基于网络侧进行增加后的用于传输同步信号块SSB的时间窗口，进行SSB的接收。
  44. 根据权利要求43所述的终端设备，其特征在于，
    所述增加包括：在原有的预定时长的第一SSB传输窗口的基础上，增加一个所述预定时长的第二SSB传输窗口。
  45. 根据权利要求44所述的终端设备，其特征在于，
    所述第一SSB传输窗口与所述第二SSB传输窗口位于同一无线帧中，并分别位于所述无线帧中的不同半帧；
    或者，所述第一SSB传输窗口与所述第二SSB传输窗口位于相邻两个无线帧中， 且位于相邻的两个半帧中。
  46. 根据权利要求45所述的终端设备，其特征在于，
    出现在所述第一SSB传输窗口以及所述第二SSB传输窗口中的具有相同编号的SSB的半帧指示不同。
  47. 根据权利要求44所述的终端设备，其特征在于，
    所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB候选传输位置分布一致；
    和/或，所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB实际传输位置分布一致。
  48. 根据权利要求47所述的终端设备，其特征在于，
    当所述第一SSB传输窗口与所述第二SSB传输窗口内的SSB实际传输位置分布一致时，所述接收单元根据网络侧通过剩余最小系统信息RMSI或无线资源控制RRC信令通知的所述第一SSB传输窗口内的SSB实际传输位置，获知所述第二SSB传输窗口内的SSB实际传输位置。
  49. 根据权利要求43所述的终端设备，其特征在于，
    所述增加包括：在原有的预定时长的第一SSB传输窗口内，增加传输所述SSB的时间窗口。
  50. 根据权利要求49所述的终端设备，其特征在于，
    所述接收单元进一步用于，获取网络侧通知的在增加的所述时间窗口内传输的SSB相对于预定位置的时间偏移。
  51. 根据权利要求50所述的终端设备，其特征在于，
    所述相对于预定位置的时间偏移包括：
    相对于所述第一SSB传输窗口所在半帧起始位置的时间偏移；
    或者，相对于具有相同编号的SSB的时间位置的时间偏移。
  52. 根据权利要求43所述的终端设备，其特征在于，
    所述终端设备中进一步包括：获取单元；
    所述获取单元，用于获取网络侧在确定是否需要增加用于传输所述SSB的时间窗口后通知的确定结果；
    若确定结果为是，则所述接收单元基于增加后的时间窗口进行SSB的接收；
    若确定结果为否，则所述接收单元基于原有的时间窗口进行SSB的接收。
  53. 一种计算机设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，其特征在于，所述处理器执行所述程序时实现如权利要求1～26中任一项所述的方法。
  54. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述程序被处理器执行时实现如权利要求1～26中任一项所述的方法。
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