WO2022022688A1 - 一种同步信号块的传输方法和通信装置 - Google Patents

一种同步信号块的传输方法和通信装置 Download PDF

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Publication number
WO2022022688A1
WO2022022688A1 PCT/CN2021/109645 CN2021109645W WO2022022688A1 WO 2022022688 A1 WO2022022688 A1 WO 2022022688A1 CN 2021109645 W CN2021109645 W CN 2021109645W WO 2022022688 A1 WO2022022688 A1 WO 2022022688A1
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WIPO (PCT)
Prior art keywords
ssb
terminal device
field
gscn
indication information
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PCT/CN2021/109645
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English (en)
French (fr)
Inventor
张云昊
徐修强
骆喆
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2023506148A priority Critical patent/JP7493094B2/ja
Priority to EP21850537.8A priority patent/EP4181453A4/en
Publication of WO2022022688A1 publication Critical patent/WO2022022688A1/zh
Priority to US18/162,568 priority patent/US20230171722A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • 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
    • 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
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method and a communication device for transmitting a synchronization signal block.
  • the 5th generation (5G) mobile communication system emerges as the times require.
  • 5G mobile communication system three types of application scenarios are defined in the 5G mobile communication system: enhanced mobile broadband (eMBB) scenarios, ultrareliable and low latency communications (URLLC) scenarios, and massive machine communication (massive machine communication) scenarios. type communications, mMTC) scenarios.
  • the eMBB scene includes: ultra-high-definition video, augmented reality (AR), and/or virtual reality (VR), and the like.
  • the main features of these services are the large amount of data transmitted and the high transmission rate.
  • URLLC scenarios include: wireless control in industrial manufacturing or production processes, motion control of driverless cars or drones, remote repair of driverless cars or drones, and/or haptic interaction applications such as remote surgery .
  • the main features of these services are ultra-high reliability and low latency required for transmission.
  • the characteristics of these services may also include a small amount of transmitted data and/or burstiness.
  • mMTC scenarios include: smart grid distribution automation, wearable communication, and/or smart cities, etc.
  • the main features of these services are the large number of networked devices and/or the small amount of data transmitted.
  • the terminal equipment in the mMTC scenario may need to meet the requirements of low cost and/or relatively long standby time.
  • Embodiments of the present application provide a synchronization signal block transmission method and communication device, which are used to improve the utilization rate of the SSB.
  • an embodiment of the present application provides a method for transmitting a synchronization signal block, including: receiving a first synchronization signal block SSB from a network device, where the first SSB is a first-type SSB of a first terminal device; if The first SSB is a second type of SSB of the second terminal device, and the first control resource set and/or the first common search space is determined according to the first SSB.
  • the first terminal device is a legacy (Legacy) terminal device
  • the first type of SSB is a Non-CD-SSB
  • the second terminal device is a REDCAP terminal device
  • the second type of SSB is a CD-SSB.
  • the first SSB may be different types of SSBs for the second terminal device and the first terminal device, for example, the first SSB is the first type SSB of the first terminal device, and the first SSB is the second terminal The second type of SSB for the device. Therefore, the type identification results of the first SSB by the second terminal device and the first terminal device are different, and the ways of using the first SSB by the second terminal device and the first terminal device may be different.
  • the second terminal device may determine the first control resource set and/or the first common search space according to the first SSB, so the second terminal device may use the first control resource set and/or the first common search space determined by the first SSB search space, thereby improving the utilization of SSB.
  • the network device does not need to send another SSB to instruct the second terminal device to determine The first control resource set and/or the first common search space, so the network device can also reduce the overhead of sending more SSBs.
  • the method further includes: if the first SSB is a first type SSB of the second terminal device, receiving a second SSB from the network device, according to the second SSB A second set of control resources and/or a second common search space is determined.
  • the second terminal device may receive the second SSB from the network device, determine the second control resource set and/or the second common search space according to the second SSB, and obtain the second control resource set and/or the second common search space by the second terminal device.
  • the second terminal device can use the second control resource set and the second common search space to determine the candidate resources of the PDCCH, detect DCI in the candidate resources of the PDCCH, obtain the system information according to the DCI, and use the system information to connect to the candidate resources of the PDCCH. into the network.
  • the first SSB includes first indication information, where, when the first indication information is a first value, the first indication information is used to indicate that the first SSB is the the second type of SSB of the second terminal device.
  • the first SSB includes first indication information, where, when the first indication information is a second value, the first indication information is used to indicate that the first SSB is the the first type SSB of the second terminal device.
  • the first indication information in the SSB may be a newly added field in the SSB, or the first indication information may be a reserved field in the SSB, or the first indication
  • the information can be native fields in the SSB.
  • the second terminal device can obtain the first indication information, so as to achieve the purpose of indicating the SSB type of the SSB to the second terminal device by the network device.
  • the first indication information includes a common subcarrier spacing field, a demodulation reference signal type A location field, an intra-frequency reselection field, an idle field, and a frequency range FR1 in the first SSB At least one of the corresponding reserved fields is carried.
  • the network device may use one or more fields in the SSB to carry the first indication information.
  • the network device may use at least one (or one or more of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB) ) field carries the first indication information.
  • the network device may use the above-mentioned one field in the SSB to carry the first indication information, or use the above-mentioned multiple fields in the SSB to carry the first indication information.
  • the specific field name and the specific number of fields used to carry the first indication information in the SSB are not limited.
  • the second terminal device can obtain the first field by parsing at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB. Instructions. Through this method, the first indication information can be carried without increasing the signaling overhead.
  • the first SSB further includes second indication information, where the second indication information is used to indicate offset information of the second SSB.
  • the second terminal device obtains the offset information of the second SSB from the first SSB, so that the second terminal device can receive the second SSB sent by the network device according to the offset information.
  • the second terminal device can determine the candidate resources of the common PDCCH through the second SSB, detect DCI in the candidate resources of the PDCCH, obtain system information according to the DCI, and use the system information to access the network. Through this method, the second terminal device can be made to quickly search for the second SSB, thereby saving the power consumption of the second terminal device.
  • the offset information of the second SSB includes: first offset information of the global synchronization channel number GSCN of the second SSB relative to the GSCN of the first SSB; the The second indication information includes a first bit and a second bit, wherein the second bit is used to indicate the first offset information of the GSCN of the second SSB relative to the GSCN of the first SSB;
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • the is the GSCN of the second SSB, the represents the GSCN of the first SSB, the represents the first offset, the a is the value indicated by the first bit, the value of a is 1 or -1, the n is the adjustment coefficient, the Indicates first offset information of the GSCN of the second SSB relative to the GSCN of the first SSB.
  • the second indication information includes a first bit and a second bit, wherein,
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • GSCN of the second SSB represents the GSCN of the first SSB
  • a is the value indicated by the first bit
  • the value of a is 1 or -1
  • n is the adjustment coefficient
  • Represents the value indicated by the second bit. is a real number greater than or equal to 0.
  • the second terminal device can obtain the first bit and the second bit from the second indication information included in the first SSB, and the first bit and the second bit are bits in the second indication information.
  • the location is not limited.
  • the first bit indicates the value of a
  • n may be an adjustment coefficient.
  • the value of n may be preset, for example, n is a coefficient predefined by the protocol.
  • the second bit indicates the first offset information of the GSCN of the second SSB relative to the GSCN of the first SSB. Similar to the above equation, the second terminal device can obtain the GSCN of the second SSB.
  • the first terminal device is a legacy (Legacy) terminal device
  • the first type is Non-CD-SSB
  • the second terminal device is a REDCAP terminal device
  • the second type is CD-SSB.
  • the first SSB includes the B1 bit.
  • the B2 bit is used to indicate the frequency information of the CD-SSB of the REDCAP terminal device.
  • the B2 bit represents a GSCN offset
  • B2 may be the first bit and the second bit in the second indication information.
  • the B2 bit is used to indicate CORESET#0 and/or CSS to the REDCAP terminal device, which can be any one of the following methods:
  • CORESET#0 is a value predefined by the protocol, and the B2 bit is used to indicate CSS.
  • Method 2 CSS is a value predefined by the protocol, and the B2 bit is used to indicate CORESET#0.
  • the offset information of the second SSB includes: second offset information of the GSCN of the second SSB relative to the GSCN of the first SSB; the second indication information It includes a first bit and a second bit, wherein the second bit is used to indicate the second offset information of the GSCN of the second SSB relative to the GSCN of the first SSB; the second The GSCN of the SSB and the GSCN of the first SSB satisfy the following relationship:
  • the is the GSCN of the second SSB
  • the a is the value indicated by the first bit
  • the value of a is 1 or -1
  • the n is the adjustment coefficient
  • the second indication information includes a first bit and a second bit, wherein,
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • GSCN of the second SSB Indicates the GSCN of the first SSB, a is the value indicated by the first bit, the value of a is 1 or -1, n is the adjustment coefficient, Represents the value indicated by the second bit. n is a real number greater than or equal to 0.
  • the second terminal device can obtain the first bit and the second bit from the second indication information included in the first SSB, and the first bit and the second bit are bits in the second indication information.
  • the location is not limited.
  • the first bit indicates the value of a, and n may be an adjustment coefficient, for example, the value of n may be preset, for example, n is a coefficient predefined by a protocol.
  • the second bit indicates the offset of the GSCN of the second SSB relative to the offset of the GSCN of the first SSB. Therefore, based on the above equation, the second terminal device can obtain the GSCN of the second SSB.
  • the offset information of the second SSB includes: the GSCN offset of the second SSB; the second indication information includes a first bit and a second bit, wherein, The first bit is used to indicate that the GSCN offset of the second SSB is a positive offset, or the GSCN offset of the second SSB is a negative offset; the second bit Used to indicate the GSCN offset of the second SSB; the frequency range of the second SSB is:
  • the is the GSCN of the first SSB, the is the initial value of GSCN, the b is the value indicated by the first bit, the value of b is 1 or -1, the n is the adjustment coefficient, the end value for GSCN, the Indicates the GSCN offset of the second SSB.
  • the offset information of the second SSB includes: the GSCN offset of the second SSB; the second indication information includes a first bit and a second bit; the first The frequency ranges of the two SSBs are:
  • the is the GSCN of the first SSB, the is the initial value of GSCN, the b is the value indicated by the first bit, the value of b is 1 or -1, the n is the adjustment coefficient, the end value for GSCN, the is the value indicated by the second bit.
  • the GSCN start value and GSCN end value can be the values indicated by the MIB.
  • the pdcch-ConfigSIB1 field in the MIB can be used to indicate the GSCN start value and GSCN end value.
  • the GSCN start value can be passed through the upper 4 bits of the pdcch-ConfigSIB1 field.
  • the GSCN end value can be indicated by the lower 4 bits of the pdcch-ConfigSIB1 field.
  • the second terminal device may acquire the first bit and the second bit from the second indication information included in the first SSB.
  • the bit positions of the first bit and the second bit in the second indication information are not limited.
  • the first bit indicates the value of b, and n may be an adjustment coefficient, for example, the value of n may be preset, for example, n is a coefficient predefined by a protocol.
  • the second bit indicates the offset of the GSCN of the second SSB.
  • the GSCN offset of the second SSB can be used to determine the frequency range of the second SSB.
  • the second indication information includes a common subcarrier spacing field, a demodulation reference signal type A location field, an intra-frequency reselection field, an idle field, and a frequency range FR1 in the first SSB At least one of the corresponding reserved fields is carried.
  • the network device may use one or more fields in the SSB to carry the second indication information.
  • the network device may use at least one (or one or more of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB) ) field carries the second indication information.
  • the network device may use the above-mentioned one field in the SSB to carry the second indication information, or use the above-mentioned multiple fields in the SSB to carry the second indication information.
  • the specific field name and the specific number of fields used in the SSB to carry the second indication information are not limited.
  • the second terminal device can obtain the second terminal device by parsing at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB. Instructions. Through this method, the second indication information can be carried without increasing the signaling overhead.
  • the first SSB includes third indication information, where the third indication information is used to indicate the first control resource set and/or the first common search space.
  • the second terminal device may use the first control resource set and the first common search space to determine the search space of the PDCCH.
  • DCI is detected in the candidate resources, system information is obtained according to the DCI, and the system information is used to access the network.
  • the third indication information includes a common subcarrier spacing field, a demodulation reference signal type A location field, an intra-frequency reselection field, an idle field, and a frequency range FR1 in the first SSB At least one of the corresponding reserved fields is carried.
  • the network device may use one or more fields in the SSB to carry the third indication information.
  • the network device may use at least one (or one or more of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB) ) field carries the third indication information.
  • the network device may use the above-mentioned one field in the SSB to carry the third indication information, or use the above-mentioned multiple fields in the SSB to carry the third indication information.
  • the specific field name and the specific number of fields used in the SSB to carry the third indication information are not limited.
  • the second terminal device can obtain the third Instructions. Through this method, the third indication information can be carried without increasing the signaling overhead.
  • an embodiment of the present application further provides a method for transmitting a synchronization signal block, including: receiving a first synchronization signal block SSB from a network device, where the first SSB is a first-type SSB of a first terminal device; if the first SSB is the first type SSB of the second terminal device, receiving a second SSB from the network device, and determining a second control resource set and/or a second common search space according to the second SSB;
  • the first SSB includes first indication information, and a second value of the first indication information is used to indicate that the first SSB is a first type SSB of the second terminal device; wherein the first SSB is The indication information is carried by at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field and the reserved field corresponding to the frequency range FR1 in the first SSB.
  • the network device may use one or more fields in the SSB to carry the first indication information.
  • the network device may use at least one (or one or more of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB) ) field carries the first indication information.
  • the network device may use the above-mentioned one field in the SSB to carry the first indication information, or use the above-mentioned multiple fields in the SSB to carry the first indication information.
  • the specific field name and the specific number of fields used to carry the first indication information in the SSB are not limited.
  • the second terminal device can obtain the first field by parsing at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB. Instructions. Through this method, the first indication information can be carried without increasing the signaling overhead.
  • the first SSB further includes second indication information, where the second indication information is used to indicate offset information of the second SSB.
  • the offset information of the second SSB includes: first offset information of the global synchronization channel number GSCN of the second SSB relative to the GSCN of the first SSB; the The second indication information includes a first bit and a second bit, wherein the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • the is the GSCN of the second SSB, the represents the GSCN of the first SSB, the represents the first offset, the a is the value indicated by the first bit, the value of a is 1 or -1, the n is the adjustment coefficient, the is the value indicated by the second bit.
  • the offset information of the second SSB includes: second offset information of the GSCN of the second SSB relative to the GSCN of the first SSB; the second indication information It includes a first bit and a second bit, wherein the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • the is the GSCN of the second SSB
  • the a is the value indicated by the first bit
  • the value of a is 1 or -1
  • the n is the adjustment coefficient
  • the offset information of the second SSB includes: the GSCN offset of the second SSB; the second indication information includes a first bit and a second bit, wherein,
  • the frequency range of the second SSB is:
  • the is the GSCN of the first SSB, the is the initial value of GSCN, the b is the value indicated by the first bit, the value of b is 1 or -1, the n is the adjustment coefficient, the end value for GSCN, the is the value indicated by the second bit.
  • the second indication information includes a common subcarrier spacing field, a demodulation reference signal type A location field, an intra-frequency reselection field, an idle field, and a frequency range FR1 in the first SSB At least one of the corresponding reserved fields is carried.
  • an embodiment of the present application further provides a method for transmitting a synchronization signal block, including: sending a first synchronization signal block SSB to a second terminal device, where the first SSB is a first type of the first terminal device SSB; wherein, if the first SSB is the second type of SSB of the second terminal device, the first SSB is used to indicate the first control resource set and/or the first common search space to the second terminal device.
  • the method further includes: sending a second SSB to the second terminal device; wherein the The second SSB is used to indicate the second control resource set and/or the second common search space to the second terminal device.
  • an embodiment of the present application further provides a method for transmitting a synchronization signal block, including: sending a first synchronization signal block SSB to a second terminal device, where the first SSB is a first type of the first terminal device SSB; if the first SSB is the first type SSB of the second terminal device, send a second SSB to the second terminal device; wherein the second SSB is used to indicate to the second terminal device A second control resource set and/or a second common search space; wherein the first SSB includes first indication information, and a second value of the first indication information is used to indicate that the first SSB is the second The first type SSB of the terminal device; wherein the first indication information is obtained through the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field and the frequency range in the first SSB At least one field in the reserved fields corresponding to FR1 is carried.
  • an embodiment of the present application provides an apparatus, and the apparatus may be a second terminal device, a device in the second terminal device, or a device that can be matched and used with the second terminal device.
  • the apparatus may include modules that perform one-to-one correspondence with the methods/operations/steps/actions described in the first aspect or the second aspect, and the modules may be hardware circuits, software, or hardware. The circuit is implemented in combination with software.
  • the apparatus may include a processing module and a transceiver module.
  • a transceiver module configured to receive a first synchronization signal block SSB from a network device, wherein the first SSB is a first type SSB of the first terminal device;
  • a processing module configured to determine a first control resource set and/or a first common search space according to the first SSB if the first SSB is a second type SSB of the second terminal device.
  • a processing module configured to receive a first synchronization signal block SSB from a network device through a transceiver module, wherein the first SSB is a first type SSB of the first terminal device;
  • the processing module if the first SSB is the first type SSB of the second terminal device, is configured to receive the second SSB from the network device through the transceiver module, and determine the second control resource set and the second control resource set according to the second SSB. / or a second common search space;
  • the first SSB includes first indication information, and a second value of the first indication information is used to indicate that the first SSB is a first type SSB of the second terminal device;
  • the first indication information is obtained through at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the first SSB.
  • a field bearer
  • an embodiment of the present application provides an apparatus, and the apparatus may be a network device, a device in a network device, or a device that can be matched and used with the network device.
  • the apparatus may include modules that perform one-to-one correspondence with the methods/operations/steps/actions described in the third aspect or the fourth aspect, and the modules may be hardware circuits, software, or hardware. The circuit is implemented in combination with software.
  • the apparatus may include a processing module and a transceiver module.
  • a processing module configured to send a first synchronization signal block SSB to the second terminal device through the transceiver module, wherein the first SSB is the first type SSB of the first terminal device;
  • the first SSB is used to indicate the first control resource set and/or the first common search space to the second terminal device.
  • a processing module configured to send a first synchronization signal block SSB to the second terminal device through the transceiver module, wherein the first SSB is the first type SSB of the first terminal device;
  • a processing module configured to send the second SSB to the second terminal device through a transceiver module if the first SSB is the first type SSB of the second terminal device;
  • the second SSB is used to indicate the second control resource set and/or the second common search space to the second terminal device
  • the first SSB includes first indication information, and a second value of the first indication information is used to indicate that the first SSB is a first type SSB of the second terminal device;
  • the first indication information is obtained through at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the first SSB.
  • a field bearer
  • an embodiment of the present application provides an apparatus, where the apparatus includes a processor, configured to implement the method described in the first aspect or the second aspect.
  • the apparatus may further include a memory for storing instructions and data.
  • the memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the method described in the first aspect or the second aspect can be implemented.
  • the apparatus may also include a communication interface, which is used for the apparatus to communicate with other devices.
  • the communication interface may be a transceiver, a circuit, a bus, a module, a pin or other type of communication interface.
  • the device can be a network device.
  • the apparatus includes:
  • the processor is configured to use the communication interface to execute the method of the first aspect or the second aspect, which is not specifically limited here.
  • an embodiment of the present application provides an apparatus, where the apparatus includes a processor, configured to implement the method described in the third aspect or the fourth aspect.
  • the apparatus may further include a memory for storing instructions and data.
  • the memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the method described in the third aspect or the fourth aspect can be implemented.
  • the apparatus may also include a communication interface, which is used for the apparatus to communicate with other devices.
  • the communication interface may be a transceiver, a circuit, a bus, a module, a pin or other type of communication interface.
  • the device may be the second terminal device or the first terminal device.
  • the apparatus includes:
  • the processor is configured to use the communication interface to execute the method of the third aspect or the fourth aspect, which is not specifically limited here.
  • the embodiments of the present application further provide a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to execute the method described in any one of the first to fourth aspects.
  • the embodiments of the present application further provide a computer program product, including instructions, which, when executed on a computer, cause the computer to execute the method described in any one of the first to fourth aspects.
  • an embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory, for implementing the method described in any one of the first to fourth aspects.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • an embodiment of the present application provides a system, where the system includes: the device of the fifth aspect and the device of the sixth aspect; or, the device of the seventh aspect, and the eighth aspect The device described in the aspect.
  • FIG. 1 is a schematic diagram of an interaction flow of a communication method provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of a frame structure of a first SSB provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of an application scenario of a method for transmitting a synchronization signal block performed by a REDCAP terminal device according to an embodiment of the present application;
  • FIG. 4 is a schematic diagram of determining CORESET#0 provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of determining CSS provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of an apparatus provided by an embodiment of the present application.
  • Embodiments of the present application provide a synchronization signal block transmission method and communication device, which are used to improve the utilization rate of the SSB.
  • 5G mobile communication can also be called a new radio (NR) mobile communication system.
  • NR new radio
  • the technical solutions provided by the embodiments of this application can be applied to various communication scenarios, for example, can be applied to one or more of the following communication scenarios: eMBB, URLLC, mMTC, device-to-device (device-to-device, D2D) communication , vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, and internet of things (IoT), etc.
  • eMBB device-to-device
  • D2D device-to-device
  • V2X vehicle-to-everything
  • V2V vehicle-to-vehicle
  • IoT internet of things
  • a wireless communication system includes communication devices, and air interface resources can be used for wireless communication between the communication devices.
  • the communication device may include a network device and a terminal device, and the network device may also be referred to as a network-side device.
  • the air interface resources may include at least one of time domain resources, frequency domain resources, code resources and space resources.
  • at least one (species) may also be described as one (species) or multiple (species), and the multiple (species) may be two (species), three (species), four (species) ) or more (species), which are not limited in the embodiments of the present application.
  • a wireless communication system includes two communication devices, namely a first communication device and a second communication device, wherein the first communication device may be a network device, and the second communication device may be a terminal device.
  • "/" may indicate that the objects associated before and after are an “or” relationship, for example, A/B may indicate A or B, and in the calculation mode, “/" may indicate a division symbol, N/M means N divided by M, and N and M respectively represent a numerical value; "and/or" can be used to describe the existence of three relationships between related objects, for example, A and/or B, can mean: A alone exists, and at the same time There are three cases of A and B, and B alone, where A and B can be singular or plural.
  • words such as “first”, “second”, “A”, and “B” may be used in the embodiments of the present application to distinguish technical features with the same or similar functions.
  • the words “first”, “second”, “A”, “B” and so on do not limit the quantity and execution order, and the words “first”, “second”, “A”, “B” and so on also Not necessarily different.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations or illustrations, and the embodiments or configurations described as “exemplary” or “for example” should not be construed as More preferred or advantageous over other embodiments or arrangements.
  • the use of words such as “exemplary” or “such as” is intended to present the related concepts in a specific manner to facilitate understanding.
  • the terminal device involved in the embodiments of the present application may also be referred to as a terminal, which may be a device with a wireless transceiver function.
  • Terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; or can be deployed on water (such as ships, etc.); or can be deployed in the air (such as aircraft, balloons or satellites, etc.).
  • the terminal device may be a user equipment (user equipment, UE), wherein the UE includes a handheld device, a vehicle-mounted device, a wearable device or a computing device with a wireless communication function.
  • the UE may be a mobile phone, a tablet computer, or a computer with a wireless transceiver function.
  • the terminal device can be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, intelligent A wireless terminal in a power grid, a wireless terminal in a smart city, or a wireless terminal in a smart home, etc.
  • the apparatus for implementing the function of the terminal device may be the terminal device, or may be an apparatus capable of supporting the terminal device to implement the function, such as a chip system.
  • the apparatus can be installed in the terminal equipment, or the apparatus can be used in combination with the terminal equipment.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the technical solutions provided by the embodiments of the present application are described in detail by taking the device for realizing the function of the terminal device as the terminal device as an example.
  • the network device involved in the embodiments of the present application includes a base station (base station, BS), which may be a device deployed in a wireless access network and capable of wirelessly communicating with a terminal device.
  • the base station may have various forms, such as a macro base station, a micro base station, a relay station, or an access point.
  • the base station involved in the embodiments of the present application may be a base station in a 5G mobile communication system or a base station in LTE, where the base station in the 5G mobile communication system may also be referred to as a transmission reception point (TRP) or gNB.
  • TRP transmission reception point
  • the apparatus for implementing the function of the network device may be the network device, or may be an apparatus capable of supporting the network device to implement the function, such as a chip system.
  • the apparatus may be installed in network equipment, or the apparatus may be used in conjunction with network equipment.
  • the technical solutions provided by the embodiments of the present application are specifically described by taking the apparatus for implementing the functions of the network equipment as the network equipment as an example.
  • the technical solutions provided in the embodiments of the present application can be applied to wireless communication between communication devices.
  • the wireless communication between communication devices may include: wireless communication between a network device and a terminal device, wireless communication between a network device and a network device, or wireless communication between a terminal device and a terminal device.
  • wireless communication may also be referred to as "communication” for short, and the term “communication” may also be described as "data transmission", “information transmission”, “signal transmission” or “transmission”.
  • the technical solution can be used for wireless communication between the scheduling entity and the subordinate entity, wherein the scheduling entity can allocate air interface resources to the subordinate entity.
  • a light terminal device can be introduced relative to a traditional terminal device, such as an eMBB terminal device.
  • the light end device may also be referred to as a reduced capability (REDCAP) end device.
  • the eMBB terminal device may be a terminal device capable of transmitting eMBB services.
  • REDCAP terminal devices can exist in mMTC scenarios, but are not limited to mMTC scenarios.
  • the mMTC scenario may include, but is not limited to, only REDCAP terminal devices.
  • the traditional terminal equipment can be a high-capacity terminal equipment or an unrestricted terminal equipment.
  • the traditional terminal device can be replaced with a high-capability terminal device introduced in the future, which is relative to the REDCAP terminal device.
  • a high-capability terminal device introduced in the future, which is relative to the REDCAP terminal device.
  • the capability comparison of the high-capability terminal device and the REDCAP terminal device satisfies one or more of the following items 1 to 9.
  • the maximum bandwidth supported by a high-capability terminal device may be 100 megahertz (MHz) or 200MHz
  • the maximum bandwidth supported by a REDCAP terminal device may be 20MHz, 10MHz, or 5MHz.
  • the second item: the number of antennas of high-capacity terminal equipment is more than the number of antennas of REDCAP terminal equipment.
  • the number of antennas may be the actual number of antennas of the terminal device, or the maximum number of antennas that can be used for transmission and/or reception.
  • high-capacity terminal equipment supports up to 4 antennas for receiving and 2 antennas for transmission
  • REDCAP terminal equipment supports up to 2 antennas for receiving and 1 antenna for transmission.
  • the capability is different in antenna-selective transmission.
  • both high-capacity terminal equipment and REDCAP terminal equipment support 2-antenna transmission, but high-capacity terminal equipment supports antenna-selective transmission, while REDCAP terminal equipment does not support antenna-selective transmission.
  • high-capacity terminal equipment can realize single-antenna port data transmission switching between two transmit antennas, and this data transmission can obtain spatial diversity gain; while single-antenna port data transmission of REDCAP terminal equipment can only be Simultaneous transmission on two transmit antennas is equivalent to the transmission performance of one transmit antenna.
  • the third item the maximum transmit power supported by the high-capability terminal equipment is greater than the maximum transmit power supported by the REDCAP terminal equipment.
  • the maximum transmit power supported by the high-capability terminal device is 23 decibel-milliwatt (dBm) or 26dBm
  • the maximum transmit power supported by the REDCAP terminal device is a value between 4dBm and 20dBm.
  • the fourth item high-capacity terminal equipment supports carrier aggregation (CA), and REDCAP terminal equipment does not support carrier aggregation.
  • CA carrier aggregation
  • REDCAP terminal equipment does not support carrier aggregation.
  • Item 5 When both high-capacity terminal equipment and REDCAP terminal equipment support carrier aggregation, the maximum number of carriers supported by the high-capacity terminal equipment is greater than the maximum number of carriers supported by the REDCAP terminal equipment. For example, high-capacity terminal equipment supports aggregation of up to 32 carriers or 5 carriers, and REDCAP terminal equipment supports aggregation of up to 2 carriers.
  • High-capability terminal equipment and REDCAP terminal equipment are introduced in different protocol versions.
  • a high-capability terminal device is a terminal device introduced in release (R) 15 of the protocol
  • a REDCAP terminal device is a terminal device introduced in protocol R17.
  • High-capacity terminal equipment has greater duplex capability.
  • high-capacity terminal equipment supports full-duplex frequency division duplex (FDD), that is, high-capacity terminal equipment supports simultaneous reception and transmission when it supports FDD
  • REDCAP terminal equipment supports half-duplex FDD, that is, REDCAP terminal equipment supports FDD at the same time. Simultaneous reception and transmission are not supported when FDD is supported.
  • FDD frequency division duplex
  • REDCAP terminal equipment supports half-duplex FDD, that is, REDCAP terminal equipment supports FDD at the same time. Simultaneous reception and transmission are not supported when FDD is supported.
  • Item 8 The data processing capability of high-capacity terminal equipment is stronger than that of REDCAP terminal equipment.
  • a high-capacity terminal device can process more data in the same time, or a high-capacity terminal device can process the same data in a shorter processing time.
  • the time when the terminal device receives the downlink data from the network device is T1
  • the terminal device processes the downlink data
  • the time when the terminal device sends the feedback of the downlink data to the network device is T2
  • T2 and T1 of the high-capacity terminal device The time delay (ie time difference) between them is smaller than the time delay between T2 and T1 of the REDCAP terminal equipment.
  • the feedback of the downlink data may be an acknowledgement (acknowledgement, ACK) feedback or a negative acknowledgement (negative acknowledgement, NACK) feedback.
  • the peak rate of data transmission of high-capacity terminal equipment is greater than the peak rate of data transmission of REDCAP terminal equipment.
  • the data transmission includes uplink data transmission (that is, the terminal device can send data to the network device), and/or downlink data transmission (that is, the terminal device can receive data from the network device).
  • different capabilities of a terminal device may include terminal devices of multiple capability types.
  • the first type of terminal equipment and the second type of terminal equipment may represent two different types of terminal equipment.
  • the first type of terminal device may be a terminal device for an industrial wireless sensor network (IWSN)
  • the second type of terminal device may be a terminal device for video surveillance (video surveillance).
  • the first type of terminal device may be a REDCAP terminal device
  • the second type of terminal device may be a high-capability terminal device.
  • the first type of end device may be REDCAP end device A
  • the second type of end device may be REDCAP end device B, wherein REDCAP end device A and REDCAP end device B differ in one or more of the following capabilities: Bandwidth capability, number of antennas, transmit power, CA capability, duplex capability and data processing capability.
  • the first type of terminal device may be a terminal device for an industrial wireless sensor network
  • the second type of terminal device may be a terminal device for video surveillance and/or an eMBB terminal device.
  • the terminal device can establish a connection between the terminal device and the network device through an initial access process, so that the terminal device can transmit data with the network device.
  • the initial access process of the terminal device includes: detecting a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) from the network device, Thereby receiving the synchronization signal block (synchronization signal band, SSB) from the network device, wherein, the SSB includes PSS, SSS and physical broadcast channel (physical broadcast channel, PBCH); obtain the master information block (master information block, MIB from PBCH) ); if it is determined that the SSB is a cell-defined synchronization signal block (cell-defined-SSB, CD-SSB) according to the MIB, then the common search space (common search space, CSS) and the control resource set (control resource set) are determined according to the indication of the MIB , CORESET)#0, if it is determined according to the synchronization signal block (PSS) and a secondary synchronization signal (
  • the MIB used in the above-mentioned initial access process is used to determine the SSB as the CD-SSB, determine the CSS and CORESET#0, determine the candidate resources of the PDCCH according to the CORESET#0 and the CSS, and detect the DCI in the candidate resources of the PDCCH.
  • the whole process of acquiring system information according to DCI is collectively referred to as "accessing the network through SSB", “using or using SSB to access the network”, or “accessing the network according to SSB”, etc.
  • the procedure of "Accessing a Network by Using or Using SSB", or “Accessing a Network According to SSB” will be described in detail.
  • an SSB is Non-CD-SSB for a terminal device (such as a traditional terminal device or a REDCAP terminal device)
  • the terminal device cannot perform the random access procedure according to the SSB, or the terminal device cannot use or utilize the SSB
  • the random access process can only be performed after the CD-SSB is searched again according to the SSB.
  • a network device can configure multiple SSBs on one carrier. For example, on a carrier with a bandwidth of 100 megahertz (MHz), four SSBs are configured, one of the four SSBs is CD-SSB, located in frequency band 1, and the remaining three SSBs of the four SSBs are Non-CD-SSBs , located in frequency band 2 to frequency band 4, wherein frequency band 1 to frequency band 4 may be located at different frequency positions of the 100MHz carrier, and frequency band 1 to frequency band 4 do not overlap each other.
  • the network device can configure a bandwidth part (BWP) for the terminal device entering the radio resource control (RRC) connection state.
  • RRC radio resource control
  • the terminal device can measure Non-CD-SSBs on frequency bands 2 to 4 determine power control parameters and determine whether to perform cell handover according to the measurement results.
  • a terminal device in a non-connected state (such as an idle state or an inactive state), during the initial access process, when a Non-CD-SSB is detected, it can jump to frequency band 1 or other devices according to the instructions of the Non-CD-SSB. Search for CD-SSB on the frequency band where CD-SSB is configured. Therefore, the main function of the current Non-CD-SSB is to make the terminal in the connected state perform reference signal measurement, or to make the terminal in the non-connected state jump to the CD-SSB.
  • REDCAP terminal equipment needs to use the frequency band where the traditional (Legacy) Non-CD-SSB is located as the working frequency band, and this frequency band is not used for traditional terminal equipment or high-capacity terminal equipment.
  • this frequency band is an industrial proprietary network .
  • the legacy Non-CD-SSB is also a Non-CD-SSB to the REDCAP end device
  • the Non-CD-SSB cannot be used to indicate CORESET#0 and/or CSS to the REDCAP end device, i.e. the Non-CD-SSB cannot Used for REDCAP terminal equipment to obtain system information and initially access the network. Therefore, the network equipment needs to broadcast more SSBs for the REDCAP terminal equipment to initially access the network, and there is a waste of resources for broadcasting SSBs.
  • an embodiment of the present application proposes a method for transmitting synchronization signal blocks, which is suitable for communication scenarios between network equipment and various types of terminal equipment.
  • REDCAP terminal equipment and traditional terminal equipment need to use different types of SSB to transmit Access the network, and need to receive the required system information according to different types of SSBs.
  • a terminal device for example, a traditional terminal device, an eMBB terminal device, or a URLLC terminal device, etc.
  • the SSB may be another terminal device (for example, a REDCAP terminal). Therefore, the other terminal device can use the SSB that the one type of terminal device cannot use to access the network to perform random access, which can improve the utilization rate of the SSB.
  • the SSB broadcast by the network device can be used by the other terminal device, so the network device can also reduce broadcasting more SSBs, thereby saving the power consumption of the network device.
  • FIG. 1 is a schematic diagram of an interaction flow between a network device and a terminal device according to an embodiment of the present application.
  • the interaction flow shown in FIG. 1 mainly includes the following steps:
  • the network device sends a first SSB to a second terminal device, where the first SSB is a first-type SSB of the first terminal device.
  • the network device may manage one or more (eg, 2, 3, or 6, etc.) cells, and the second terminal device may communicate with the network device in at least one of the cells (eg, the first cell). Taking the at least one cell being the first cell as an example, the network device may broadcast the first SSB in the first cell, and the second terminal device may search for the first SSB in the first cell. For example, the second terminal device acquires the SSB by detecting the PSS and the SSS on the frequency point specified in the protocol or on the frequency point where the SSB may exist.
  • the network device may broadcast the first SSB in the first cell, and the second terminal device may search for the first SSB in the first cell. For example, the second terminal device acquires the SSB by detecting the PSS and the SSS on the frequency point specified in the protocol or on the frequency point where the SSB may exist.
  • the second terminal device and the first terminal device may be two different types of terminal devices.
  • the embodiments of the present application are described by taking the following cases as an example: the second terminal device is a REDCAP terminal device, and the first terminal device is a high-capability terminal device, for example, the first terminal device may be an eMBB terminal device.
  • the first SSB is used to indicate the first control resource set and/or the first common search space to the second terminal device.
  • the network device may be configured with a first SSB, and the first SSB may be different types of SSBs for different types of terminal devices, or may be the same type of SSBs.
  • the first SSB is a first type SSB of the first terminal device and the first SSB is a second type SSB of the second terminal device.
  • the first type of SSB and the second type of SSB may represent different types of SSB.
  • the first type SSB may be Non-CD-SSB, ie the first type SSB does not indicate CORESET#0 and/or CSS.
  • the first terminal device cannot access the network from the frequency point corresponding to the first SSB, or the first terminal device cannot access the network by using the first SSB.
  • the second type SSB may be a CD-SSB, ie the second type SSB indicates CORESET #0 and/or CSS.
  • the second terminal device can access the network using the first SSB.
  • the first type of SSB is an SSB that the terminal device cannot use to determine CORESET#0 and/or CSS
  • the second type of SSB is an SSB that the terminal device can use to determine CORESET#0 and/or CSS.
  • the embodiments of the present application do not limit the implementation of the first type of SSB and the second type of SSB.
  • the implementation of the first type of SSB and the second type of SSB can be flexibly configured according to application scenarios.
  • the same SSB may be different SSB types for different types of terminal devices, and the SSB types may include the first type SSB and the second type SSB. It is not limited that this application implements Examples may also include more types of SSBs, such as third type SSBs, fourth type SSBs, and so on.
  • the second terminal device receives the first SSB from the network device, where the first SSB is a first type SSB of the first terminal device.
  • the second terminal device may receive the first SSB broadcast by the network device.
  • the second terminal device may parse the first SSB to obtain the information carried by the first SSB.
  • the second terminal device may determine the SSB type of the first SSB. For example, the second terminal device determines whether the first SSB is the first type SSB of the first terminal device, and the second terminal device determines whether the first SSB is the second type SSB of the second terminal device.
  • the first SSB can be different types of SSBs for different types of terminal devices, for example, the first SSB is the first type SSB of the first terminal device , and the first SSB is the second type SSB of the second terminal device.
  • the second terminal device determines that the first SSB is the first type SSB of the first terminal device, and the first SSB is the second type SSB of the second terminal device, the second terminal device performs subsequent step 103 .
  • the second terminal device determines the first control resource set and/or the first common search space according to the first SSB.
  • the second terminal device and the first terminal device may An SSB performs different processing.
  • the first SSB is the Non-CD-SSB of the first terminal device, and the first terminal device can use the first SSB to jump to a new CD-SSB, or use the SSB to perform measurement.
  • the first SSB is the Non-CD-SSB of the first terminal device, and the first SSB is the CD-SSB of the second terminal device, and the second terminal device may determine the first control resource set and/or the first control resource set according to the first SSB. public search space.
  • the first control resource set may be the aforementioned CORESET#0
  • the first common search space may be the aforementioned CSS.
  • the second terminal device may determine PDCCH candidate resources according to CORESET#0 and CSS, detect DCI in the PDCCH candidate resources, obtain system information according to DCI, and use the system information to access the network Therefore, the embodiment of the present application can improve the utilization rate of the SSB.
  • the first control resource set and the first common search space may be used to determine candidate resource positions of the common PDCCH.
  • the PDSCH scheduled by the common PDCCH may carry the public information of the cell, or carry the public information of a group of terminal equipments.
  • the first control resource set and the first common search space may be replaced by parameters with other names, and the parameters are used to determine the candidate resource positions of the common PDCCH.
  • the second terminal device may determine at least one of the following according to the first SSB: a first control resource set and a first common search space.
  • the first SSB indicates the information of the first control resource set
  • the second terminal device can use the first SSB to determine the first control resource set
  • the second terminal device can determine the first common search space according to the pre-stipulation of the protocol.
  • the first SSB indicates the information of the first common search space
  • the second terminal device can use the first SSB to determine the first common search space
  • the second terminal device can determine the first control resource set according to the pre-stipulation of the protocol.
  • the first SSB indicates the information of the first control resource set and the information of the first common search space
  • the second terminal device may use the first SSB to determine the first control resource set and the first common search space.
  • the second terminal device may use the first control resource set and the first common search space to determine candidate resources of the PDCCH, and then use the first control resource set and the first common search space to determine candidate resources of the PDCCH.
  • DCI is detected in the candidate resources of , and system information is obtained according to the DCI, and the system information is used to access the network.
  • the first terminal device cannot use the first SSB to access the network, but the second terminal device can use the first SSB to access the network, which improves the utilization rate of the SSB broadcast by the second terminal device to the network device and reduces the Network devices broadcast more SSB overhead.
  • the first type of SSB is Non-CD-SSB
  • the second type of SSB is CD-SSB.
  • the second terminal device uses the first SSB to synchronize with the network device, and obtains a system information block (SIB) according to the first SSB, and the second terminal device can initiate initial access to the network device according to the information indicated by the SIB.
  • SIB system information block
  • the method for transmitting a synchronization signal block performed by the network device may further include the following steps:
  • the network device sends the second SSB to the second terminal device.
  • the first SSB is a first type of SSB of the second terminal device
  • the second SSB is used to indicate the second control resource set and/or the second common search space to the second terminal device.
  • the network device may broadcast the first SSB and the second SSB.
  • the first SSB is a first-type SSB of the second terminal device
  • the second SSB is a second-type SSB of the second terminal device.
  • the first SSB is not used to indicate the control resource set and/or the common search space to the second terminal device
  • the second SSB is used to indicate the control resource set and/or the common search space to the second terminal device.
  • the second SSB is used to indicate the second control resource set and/or the second common search space to the second terminal device
  • the second terminal device can use the second SSB to determine the second control resource set and/or the second common search space space.
  • the second terminal device may use the second control resource set and the second common search space to determine candidate resources of the PDCCH, detect DCI in the candidate resources of the PDCCH, obtain system information according to the DCI, and use the system information to access the network.
  • the second control resource set and the second common search space are used to determine candidate resource positions of the common PDCCH.
  • the PDSCH scheduled by the common PDCCH may carry the public information of the cell, or carry the public information of a group of terminal equipments.
  • the second control resource set and the second common search space may be replaced by parameters with other names, and the parameters are used to determine the candidate resource positions of the common PDCCH.
  • the first control resource set and the second control resource set may be the same or different, which are not limited in this embodiment of the present application.
  • the first common search space and the second common search space may be the same or different, which are not limited in this embodiment of the present application.
  • the method for transmitting the synchronization signal block performed by the second terminal device may further include the following steps:
  • the second terminal device receives the second SSB from the network device, and determines the second control resource set and/or the second common search space according to the second SSB.
  • the second terminal device determines whether the first SSB is the first type SSB of the second terminal device.
  • the first SSB may be the same type of SSB for different types of terminal devices, eg, the first SSB is the first type SSB of the first terminal device, and the first SSB is the first type SSB of the second terminal device.
  • the first SSB is the first type SSB of the first terminal device and the first SSB is the first type SSB of the second terminal device, how the second terminal device and the first terminal device can process the first SSB same.
  • the first terminal device cannot use the first SSB to access the network, and the first terminal device cannot access the network using the first SSB.
  • the device can jump to the CD-SSB of the first terminal device (eg, the second SSB or the third SSB), and the second terminal device cannot access the network using the first SSB, and the second terminal device can jump to the second SSB.
  • the second SSB and the third SSB may represent different SSBs.
  • the second terminal device and the first terminal device may jump to the same SSB, and the second terminal device and the first terminal device may also jump to a different SSB.
  • the second terminal device may receive the second SSB from the network device, and determine the second control resource set and/or the second common search space according to the second SSB. After the second terminal device obtains the second control resource set and the second common search space , the second terminal equipment can use the second control resource set and the second common search space to determine the candidate resources of the PDCCH, detect DCI in the candidate resources of the PDCCH, obtain system information according to the DCI, and use the system information to access the network.
  • the SSB provided by the embodiments of the present application includes first indication information, wherein,
  • the first indication information is used to indicate that the SSB is the second type SSB of the second terminal device;
  • the first indication information is used to indicate that the SSB is the SSB of the first type of the second terminal device.
  • the SSB is the first SSB or the second SSB.
  • FIG. 2 shows a schematic structural diagram of the first SSB, and the structure of the second SSB may be similar to this, and will not be described one by one.
  • the first indication information in the SSB may be a newly added field in the SSB, or the first indication information may be a reserved field in the SSB, or the first indication information may be is the original field in SSB.
  • the second terminal device can obtain the first indication information, so as to achieve the purpose of indicating the SSB type of the SSB to the second terminal device by the network device.
  • the original field in the first SSB can be used to carry the first indication information.
  • the second terminal device can obtain the first indication information by re-interpreting the original field of the first SSB, so as to realize the network device to the second SSB.
  • the terminal device indicates the purpose of the SSB type of the first SSB.
  • the value of the first indication information may be the first value or the second value.
  • the value of the first indication information may also be a third value, or a fourth value or the like.
  • Different values of the first indication information may indicate that the SSB carrying the first indication information is a different type of SSB of the second terminal device.
  • taking the first SSB as an example when the first indication information is a first value, the first indication information is used to indicate that the first SSB is a second type of SSB of the second terminal device, for example, the first value may be 0.
  • the first indication information is used to indicate that the first SSB is the first type SSB of the second terminal device, for example, the second value may be 1.
  • the network device may indicate different types of SSBs by configuring different values of the first indication information, and the second terminal device may also determine different types of the SSBs by using different values parsed from the first indication information , so that the second terminal device can perform corresponding operations according to the SSB corresponding to the specific SSB type of the second terminal device.
  • the first indication information is carried by the common subcarrier spacing (subCarrierSpacingCommon) field in the SSB carrying the first indication information, the demodulation reference signal type A position (dmrs-TypeA-Position). ) field, an intraFreqReselection (intraFreqReselection) field, a spare (spare) field, and a reserved field corresponding to a frequency range (FR)1.
  • subCarrierSpacingCommon the demodulation reference signal type A position
  • intraFreqReselection intraFreqReselection
  • spare spare
  • FR reserved field corresponding to a frequency range
  • the common subcarrier spacing field is used to indicate the subcarrier spacing of CORESET#0
  • the demodulation reference signal type A location field is used to indicate the position of the demodulation reference signal in the time slot, within the frequency
  • the reselection field is used to indicate whether to search for a cell on a new frequency when the cell is in the forbidden state.
  • the idle field has no indication function.
  • the reserved field corresponding to FR1 is used to indicate that the field is in the reserved state when the spectrum is FR1, and has no indication function.
  • the network device may use one or more fields in the SSB to carry the first indication information.
  • the network device may use at least one (or one or more of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB) ) field carries the first indication information.
  • the network device may use the above-mentioned one field in the SSB to carry the first indication information, or use the above-mentioned multiple fields in the SSB to carry the first indication information.
  • the specific field name and the specific number of fields used in the SSB to carry the first indication information are not limited.
  • the second terminal device can obtain the first field by parsing at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB. Instructions.
  • the frequency band where the SSB is located may belong to different frequency ranges.
  • the frequency band to which the SSB belongs may belong to FR1 or FR2.
  • the frequency range corresponding to FR1 is 450MHz-6000MHz
  • the frequency range corresponding to FR2 is 24250MHz-52600MHz.
  • the reserved field corresponding to FR1 refers to a field that is useless in the SSB when the frequency band where the SSB is located belongs to FR1, so it can be used to carry the first indication information. If the frequency band where the SSB is located belongs to FR2, the unused field in the above FR1 is used to indicate the SSB index.
  • the first SSB when the first indication information is a first value, the first SSB includes third indication information, where the third indication information is used to indicate the first control resource set and/or the first common search space.
  • the second terminal device may use the first SSB to determine at least one of the following: a first control resource set and a first common search space.
  • the first SSB includes third indication information
  • the third indication information indicates the information of the first control resource set
  • the second terminal device can determine the first control resource set according to the indication of the third indication information
  • the second terminal device can A first common search space is determined in advance.
  • the third indication information indicates the information of the first common search space
  • the second terminal device may determine the first common search space according to the indication of the third indication information
  • the second terminal device may determine the first control resource according to the pre-stipulation of the protocol set.
  • the third indication information indicates the information of the first control resource set and the information of the first common search space
  • the second terminal device may determine the first control resource set and the first common search space according to the indication of the third indication information.
  • the location of the third indication information in the first SSB is not limited.
  • the second terminal device may use the first control resource set and the first common search space to determine the search space of the PDCCH, and then use the first control resource set and the first common search space to determine the search space of the PDCCH.
  • DCI is detected in the candidate resources of , and system information is obtained according to the DCI, and the system information is used to access the network.
  • the third indication information includes the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the first SSB At least one field in the .
  • the network device may use one or more fields in the first SSB to carry the third indication information, but not limitedly, the network device may use the common subcarrier spacing field in the first SSB, the demodulation reference signal type A location At least one of the field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 carries the third indication information.
  • the network device may use the above-mentioned one field in the first SSB to carry the third indication information, or use the above-mentioned multiple fields in the first SSB to carry the third indication information.
  • the specific field name and the number of specific fields used in the first SSB to carry the third indication information are not limited.
  • the second terminal device By parsing at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the first SSB, the second terminal device obtains third indication information.
  • the network device may use the above-mentioned one field in the first SSB to carry the first indication information and the third indication information, or use the above-mentioned multiple fields in the first SSB to carry the first indication information and the third indication information, the first indication
  • the positions of the information and the third indication information in the first SSB are not limited.
  • the specific fields used in the first SSB to carry the first indication information and the third indication information are not limited.
  • the second terminal device may receive the first SSB.
  • the first SSB carries first indication information, and when the first indication information includes the second value, the first indication information is used to indicate that the first SSB is the first type of SSB of the second terminal device, for example, the first indication information is used to indicate The first SSB is the Non-CD-SSB of the second terminal device.
  • the network device also needs to broadcast the second SSB.
  • the second SSB may be a second type SSB of the second terminal device.
  • the second SSB may include first indication information, and the value of the first indication information is a first value to indicate that the second SSB is a second type SSB of the second terminal device, such as CD-SSB.
  • the first SSB may further include second indication information, where the second indication information is used to indicate offset information of the second SSB.
  • the offset information of the second SSB is the offset information that needs to be used when the second terminal device determines the second SSB.
  • the offset information of the second SSB may be offset information of the second SSB relative to the first SSB.
  • the second terminal device obtains the offset information of the second SSB from the first SSB, so that the second terminal device can receive the second SSB sent by the network device according to the offset information.
  • the second terminal device can determine the candidate resources of the common PDCCH through the second SSB, detect DCI in the candidate resources of the PDCCH, obtain system information according to the DCI, and use the system information to access the network.
  • the frequency location of the SSB may be represented by a global synchronization channel number (GSCN).
  • GSCN global synchronization channel number
  • the frequency offset information of the second SSB includes: first offset information of the GSCN of the second SSB relative to the GSCN of the first SSB.
  • the second indication information includes a first bit and a second bit, wherein,
  • the second bit is used to indicate the first offset information of the GSCN of the second SSB relative to the GSCN of the first SSB;
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • n is a real number greater than or equal to 0, for example, n may be an integer greater than or equal to 1. is a real number greater than or equal to 0, for example, n can be an integer greater than or equal to 1.
  • the second indication information includes a first bit and a second bit, wherein,
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • n is a real number greater than or equal to 0, for example, n may be an integer greater than or equal to 1. is a real number greater than or equal to 0, for example, n can be an integer greater than or equal to 1.
  • the second terminal device may obtain the first bit and the second bit from the second indication information included in the first SSB, and the bit positions of the first bit and the second bit in the second indication information are different.
  • the first bit indicates the value of a
  • n may be an adjustment coefficient.
  • the value of n may be preset, for example, n is a coefficient predefined by the protocol.
  • the second bit indicates the first offset information of the GSCN of the second SSB relative to the GSCN of the first SSB. Similar to the above equation, the second terminal device can obtain the GSCN of the second SSB.
  • the first offset is an offset obtained by looking up the table according to k SSB and pdcch-ConfigSIB1.
  • k SSB Represents the first offset
  • pdcch-ConfigSIB1 Represents the first offset
  • the second indication information may include a third indication field and a fourth indication field.
  • the third indication field is used to indicate that the first offset is a positive offset, or the first offset is a negative offset; the fourth indication field is used to indicate that the GSCN of the second SSB is relative to the first offset
  • the third indication field and the fourth indication field may be an explicit indication or an implicit indication.
  • the indication manners of the third indication field and the fourth indication field may include various forms, for example, in the manner of bits or information flow. For example, when the third indication field is a bit, it can be called a first bit, and when the fourth indication field is a bit, it can be called a second bit.
  • the frequency location of the SSB may be represented by the GSCN.
  • the offset information of the second SSB includes: second offset information of the GSCN of the second SSB relative to the GSCN of the first SSB.
  • the second indication information includes a first bit and a second bit, wherein,
  • the second bit is used to indicate the second offset information of the GSCN of the second SSB relative to the GSCN of the first SSB;
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • n is a real number greater than or equal to 0, for example, n may be an integer greater than or equal to 1.
  • the second indication information includes a first bit and a second bit, wherein,
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • n is a real number greater than or equal to 0, for example, n may be an integer greater than or equal to 1.
  • the second terminal device may obtain the first bit and the second bit from the second indication information included in the first SSB, and the bit positions of the first bit and the second bit in the second indication information are different. Do limit.
  • the first bit indicates the value of a
  • n may be an adjustment coefficient, for example, the value of n may be preset, for example, n is a coefficient predefined by a protocol.
  • the second bit indicates the offset of the GSCN of the second SSB relative to the offset of the GSCN of the first SSB. Therefore, based on the above equation, the second terminal device can obtain the GSCN of the second SSB.
  • the second indication information includes a third indication field and a fourth indication field
  • the third indication field is used to indicate that the first offset is a forward offset, or the first offset The offset is a negative offset
  • the fourth indication field is used to indicate the offset of the GSCN of the second SSB relative to the GSCN of the first SSB.
  • the third indication field and the fourth indication field may be an explicit indication or an implicit indication.
  • the indication manners of the third indication field and the fourth indication field may include various forms, for example, in the manner of bits or information flow. For example, when the third indication field is a bit, it can be called a first bit, and when the fourth indication field is a bit, it can be called a second bit.
  • the frequency location of the SSB may be represented by the GSCN.
  • the offset information of the second SSB includes: the GSCN offset of the second SSB.
  • the second indication information includes a first bit and a second bit, wherein,
  • the first bit is used to indicate that the GSCN offset of the second SSB is a positive offset, or the GSCN offset of the second SSB is a negative offset;
  • the second bit is used to indicate the GSCN offset of the second SSB
  • the frequency range of the second SSB is:
  • n is a real number greater than or equal to 0, for example, n may be an integer greater than or equal to 1.
  • the GSCN start value and GSCN end value can be the values indicated by the MIB.
  • the pdcch-ConfigSIB1 field in the MIB can be used to indicate the GSCN start value and GSCN end value.
  • the GSCN start value can be passed through the upper 4 bits of the pdcch-ConfigSIB1 field.
  • the GSCN end value can be indicated by the lower 4 bits of the pdcch-ConfigSIB1 field.
  • the second terminal device may obtain the first bit and the second bit from the second indication information included in the first SSB, and the bit positions of the first bit and the second bit in the second indication information are not limited.
  • the first bit indicates the value of b, and n may be an adjustment coefficient, for example, the value of n may be preset, for example, n is a coefficient predefined by a protocol.
  • the second bit indicates the offset of the GSCN of the second SSB.
  • the GSCN offset of the second SSB can be used to determine the frequency range of the second SSB.
  • the second indication information includes a third indication field and a fourth indication field
  • the third indication field is used to indicate that the GSCN offset of the second SSB is a forward offset, or The GSCN offset of the second SSB is a negative offset
  • the fourth indication field is used to indicate the GSCN offset of the second SSB.
  • the third indication field and the fourth indication field may be an explicit indication or an implicit indication.
  • the indication manners of the third indication field and the fourth indication field may include various forms, for example, in the manner of bits or information flow. For example, when the third indication field is a bit, it can be called a first bit, and when the fourth indication field is a bit, it can be called a second bit.
  • the second indication information includes the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB carrying the second indication information. At least one field in the .
  • the network device may use one or more fields in the SSB to carry the second indication information.
  • the network device may use at least one (or, one or more) of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB. ) field carries the second indication information.
  • the network device may use the above-mentioned one field in the SSB to carry the second indication information, or use the above-mentioned multiple fields in the first SSB to carry the second indication information.
  • the specific field name and the specific number of fields used in the first SSB to carry the second indication information are not limited.
  • the second terminal device can obtain second indication information.
  • An embodiment of the present application also provides a method for transmitting a synchronization signal block, which mainly includes the following processes:
  • the network device sends a first synchronization signal block SSB to the second terminal device, where the first SSB is a first type SSB of the first terminal device.
  • the network device sends the second SSB to the second terminal device;
  • the second SSB is used to indicate the second control resource set and/or the second common search space to the second terminal device
  • the first SSB includes first indication information, and the second value of the first indication information is used to indicate that the first SSB is a first type SSB of the second terminal device;
  • the first indication information is carried by at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field and the reserved field corresponding to the frequency range FR1 in the first SSB.
  • An embodiment of the present application also provides a method for transmitting a synchronization signal block, which mainly includes the following processes:
  • the second terminal device receives the first synchronization signal block SSB from the network device, wherein the first SSB is a first type SSB of the first terminal device;
  • the second terminal device receives the second SSB from the network device, and determines the second control resource set and/or the second common search space according to the second SSB;
  • the first SSB includes first indication information, and the second value of the first indication information is used to indicate that the first SSB is a first type SSB of the second terminal device;
  • the first indication information is carried by at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field and the reserved field corresponding to the frequency range FR1 in the first SSB.
  • the network device may use one or more fields in the SSB to carry the first indication information.
  • the network device may use at least one (or one or more of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB) ) field carries the first indication information.
  • the network device may use the above-mentioned one field in the SSB to carry the first indication information, or use the above-mentioned multiple fields in the SSB to carry the first indication information.
  • the specific field name and the specific number of fields used to carry the first indication information in the SSB are not limited.
  • the second terminal device can obtain the first field by parsing at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the SSB. Instructions. Through this method, the first indication information can be carried without increasing the signaling overhead.
  • the network device is a base station
  • the second terminal device is a REDCAP terminal device (hereinafter referred to as REDCAP UE)
  • the first terminal device is a traditional terminal device (Legacy terminal device)
  • the first type of SSB may specifically be Non- CD-SSB
  • the second type of SSB may specifically be a CD-SSB.
  • Traditional terminal equipment cannot obtain SIB1 through Non-CD-SSB, and cannot access the network from this cell.
  • a Non-CD-SSB corresponding to a traditional terminal device can access the network, for example, the network is a private network or an industrial network.
  • This embodiment of the present application supports the REDCAP terminal device to determine CORESET#0 and CSS through the Non-CD-SSB of the Legacy terminal device, to determine the candidate resources of PDCCH according to CORESET#0 and CSS, to detect DCI in the candidate resources of PDCCH, and to obtain the data according to the DCI.
  • the system information of the REDCAP terminal device which is used to access the network.
  • an embodiment of the present application provides a transmission scenario of a synchronization signal block.
  • An SSB is Non-CD-SSB to a traditional terminal device.
  • the REDCAP terminal device can determine the SSB type of the SSB to the REDCAP terminal device, and according to The determination result of the REDCAP terminal device performs different steps. Specifically, when the REDCAP terminal device determines that an SSB is the Non-CD-SSB of the traditional terminal device, the process performed by the REDCAP terminal device includes the following steps:
  • Step S1 The REDCAP terminal device determines whether the received SSB is the Non-CD-SSB of the traditional terminal device. If the SSB is the Non-CD-SSB of the traditional terminal device, the REDCAP terminal device executes step S2.
  • the scenario may further include that the traditional terminal device determines whether the received SSB is a Non-CD-SSB. If the legacy terminal device determines that the received SSB is Non-CD-SSB, the legacy terminal device jumps to the CD-SSB according to the indication information in the PBCH.
  • Step S2 The REDCAP terminal device determines whether the received SSB is Non-CD-SSB for the REDCAP terminal device. If the REDCAP terminal device determines that the received SSB is Non-CD-SSB, jump to step S3-1 or step S3- 2. If the REDCAP terminal device determines that the received SSB is a CD-SSB, jump to step S4.
  • Step S3-1 The REDCAP terminal device jumps to the same CD-SSB as the traditional terminal device, and accesses the network through the CD-SSB.
  • the specific process of accessing the network through SSB please refer to the foregoing introduction.
  • Step S3-2 The network device instructs the CD-SSB of the REDCAP terminal device, and the REDCAP terminal device jumps to the CD-SSB and accesses the network through the CD-SSB.
  • the REDCAP terminal device jumps to the CD-SSB and accesses the network through the CD-SSB.
  • Step S4 The network device instructs the CORESET#0 and/or CSS of the REDCAP terminal device, and the REDCAP terminal device obtains the SIB1 according to the instruction, and completes the initial access procedure.
  • the PBCH load includes The A bits are used to carry MIB information, and the meaning and number of bits of each field included in the MIB are shown in Table 1.
  • the terminal device determines whether the CSS of the traditional terminal device exists according to k SSB .
  • the k SSB is calculated by the ssb-SubcarrierOffset field.
  • the frequency band where the SSB is located may belong to FR1 or FR2.
  • k SSB can be calculated in different formulas as follows:
  • k SSB ssb-SubcarrierOffset, a total of 4 bits, and the value range is 0 to 15.
  • the terminal device determines whether it is CD-SSB according to k SSB , and after determining that it is Non-CD-SSB, the method for obtaining the frequency point position of CD-SSB according to the pdcch-ConfigSIB1 field in the MIB, as shown in the table 2.
  • Table 3a and Table 3b are used to calculate when the frequency band where the SSB is located can belong to FR1
  • Table 3b is used when the frequency band in which the SSB is located can belong to FR2
  • controlResourceSetZero represents CORESET#0
  • searchSpaceZero represents search space 0. In this embodiment of the present application, it may also represent a common search space CSS.
  • the terminal equipment receives Non-CD-SSB, for the terminal equipment, the common subcarrier spacing (subCarrierSpacingCommon) field, the demodulation reference signal type A position (dmrs- TypeA-Position) field, intraFreqReselection (intraFreqReselection) field, spare (spare) field and reserved fields corresponding to frequency range (FR)1 do not need to be interpreted, or there is no corresponding follow-up action after interpretation.
  • subCarrierSpacingCommon the common subcarrier spacing
  • demodulation reference signal type A position demodulation reference signal type A position
  • intraFreqReselection intraFreqReselection
  • spare spare
  • subCarrierSpacingCommon may be used to carry at least one of the following indication information in the foregoing embodiments: first indication information, second indication information, and third indication information.
  • the load of PBCH includes A bits, which are These A bits are used to carry the MIB, in addition to the above Also used in PBCH A total of 8 bits are used to indicate the following information:
  • the system frame number (systemFrameNumber) field in the MIB occupies 6 bits, and these 10 bits are used to indicate the system frame number.
  • the three bits are used according to the following rules according to the frequency band where the SSB is located and the subcarrier spacing:
  • the number of SSBs in SSBs is at most 4
  • the subcarrier spacing of SSBs is 30kHz
  • the number of SSBs in SSBs is at most 8
  • the maximum number of SSBs in the SSB is 64, are the highest three bits indicating the SSB index information.
  • a reserved field of 0 to 2 bits.
  • the frequency band where the SSB is located is the FR1 frequency band
  • there are reserved fields including the above
  • a common subcarrier spacing (subCarrierSpacingCommon) field, a demodulation reference signal type A position (dmrs-TypeA-Position) field, an intraFreqReselection field, a spare field, and a frequency range may be used.
  • At least one of the reserved fields corresponding to (frequency range, FR) 1 carries at least one of the first indication information, the second indication information, and the third indication information.
  • the SSB includes the PBCH
  • the REDCAP terminal device obtains the MIB from the PBCH, and determines whether the SSB is the Non-CD-SSB of the traditional terminal device through the indication of the MIB.
  • This indication may be achieved using spare bits in the PBCH or MIB, and/or re-interpretation of some fields in the PBCH or MIB.
  • Table 4 is the information indicated by MIB to traditional terminal equipment and REDCAP terminal equipment.
  • the common subcarrier spacing (subCarrierSpacingCommon) field in the MIB the demodulation reference signal type A position (dmrs-TypeA-Position) field, the intraFreqReselection field , a spare field and a reserved field corresponding to a frequency range (FR) 1, which are used for the indication information sent by the network device to the REDCAP terminal device in the above steps.
  • the first indication information the second indication information, and the third indication information, refer to the foregoing embodiments for details, and details are not repeated here.
  • the frequency band where the SSB is located belongs to FR1
  • the common subcarrier spacing (subCarrierSpacingCommon) field the demodulation reference signal type A position (dmrs-TypeA-Position) field, the intra-frequency reselection ( IntraFreqReselection) field, spare field and reserved field corresponding to frequency range (FR)1 occupy 6 bits in total.
  • the common subcarrier spacing (subCarrierSpacingCommon) in Table 4 Field, demodulation reference signal type A position (dmrs-TypeA-Position) field, intraFreqReselection field, spare field and reserved fields corresponding to frequency range (FR) 1 occupy a total of 4 bits. These bits can be used according to the following rules:
  • B2 can represent the following two meanings :
  • B2 indicates an offset value (offset) relative to the frequency point of the new SSB of the legacy terminal equipment. Used for REDCAP terminal equipment to jump to the CD-SSB of the REDCAP terminal equipment.
  • B2 is used to indicate CORESET#0 and/or CSS, so that the REDCAP terminal device searches for the system information wireless network temporary identifier ( system information-radio network temporary indicator, SI-RNTI) scrambled DCI, after searching for the DCI, obtain SIB1 and so on according to the instructions of the DCI.
  • SI-RNTI system information-radio network temporary indicator
  • the B2 bit is used to indicate the frequency information of the CD-SSB of the REDCAP terminal device.
  • the B2 bit represents an offset of a GSCN, and B2 can be the aforementioned first bit and second bit.
  • the B2 bit is used to indicate CORESET#0 and/or CSS to the REDCAP terminal device, which may be any one of the following methods:
  • CORESET#0 is a value predefined by the protocol, and the B2 bit is used to indicate CSS.
  • Method 2 CSS is a value predefined by the protocol, and the B2 bit is used to indicate CORESET#0.
  • indicating CORESET#0 and/or CSS can be implemented by a table lookup method.
  • Method 1 and Method 2 can be used as special cases of Method 3.
  • X bits are used to indicate the number of bits used to indicate CORESET#0
  • Table 5 is used to determine CORESET#0
  • Table 6 is used to determine CSS.
  • a table as shown in Table 5 may be defined, where X bits are used to indicate one of the first 2 X rows.
  • 2 bits indicate one of the first 4 lines to indicate the time-frequency multiplexing method between SSB and CORESET#0, and the number of resource blocks occupied by CORESET#0 (Number of RBs), the number of symbols occupied by CORESET#0 (Number of Symbols), and the frequency domain offset (Offset) between SSB and CORESET#0.
  • the frequency domain offset between SSB and CORESET#0 is the resource block (RB) offset of the lowest frequency point of both SSB and CORESET#0, thereby determining the frequency resource position of CORESET#0 .
  • the multiplexing pattern of SSB and CORESET#0 is pattern 1 as shown in the second column in Table 5
  • CORESET#0 occupies
  • the number of RB resources is 24RB
  • the number of symbols occupied by CORESET#0 is 2
  • the frequency domain offset between SSB and CORESET#0 is 2RB
  • the indicated CORESET#0 frequency domain position and length are shown in Figure 4.
  • different types of terminal equipment can use different 2X lines in the table shown in Table 5 to indicate the CORESET #0 parameter.
  • the CORESET #0 parameter obtained by the second terminal equipment is indicated by one of the first 2X lines.
  • the CORESET #0 parameter obtained by the first terminal device is indicated by another line in the last 2X lines.
  • the terminal device can also use the table shown in Table 6 below to determine the CSS.
  • a table as shown in Table 6 may be defined in the protocol, and Y bits are used to indicate one of the first 2 Y rows. For example 3 bits indicate one of the first 8 lines.
  • the information in this row can indicate the number of search space sets per slot, as well as the parameters O and M, so that the terminal device can Calculate n 0 , and then you can get the starting time slot of the CSS in the frame where the SSB is located, which is the n 0 +1 th time slot; the protocol stipulates that the CSS occupies two consecutive time slots, that is, occupies the n 0 +1 th time slot and the n 0 +2th slot.
  • i represents the Index of the SSB
  • different types of terminal devices can use different 2 Y rows in the table shown in Table 6 to indicate CSS parameters.
  • the CSS parameters obtained by the second terminal device are indicated by one of the first 2 Y rows.
  • the CSS parameters obtained by the device are indicated by another row in the last 2 Y rows.
  • the first symbol index of the search space in the time slot is also indicated, thereby determining the CSS, as shown in FIG. 5 .
  • the first symbol is used as the starting symbol of CORESET#0.
  • the PDCCH is searched, that is, the DCI scrambled by the SI-RNTI is searched.
  • Table 5 and Table 6 may also be used simultaneously to determine the CORESET#0 and/or CSS indicated by the network device to the REDCAP terminal device.
  • the REDCAP terminal device accesses the network through the Non-CD-SSB of the traditional terminal device, and the REDCAP terminal device jumps to a CD-SSB different from the traditional terminal device.
  • the information bits in the PBCH or MIB of the Non-CD-SSB that have no meaning to the traditional terminal equipment, these bits are used to indicate whether the REDCAP terminal equipment wants to jump, and the GSCN of the new SSB to indicate the jump or not.
  • CORESET#0 and CSS which do not affect the behavior of traditional terminal equipment, and support the technical effect of REDCAP terminal equipment accessing the network through Non-CD-SSB.
  • the methods provided in the embodiments of the present application are respectively introduced from the perspectives of the network device, the terminal device, and the interaction between the network device and the terminal device.
  • the network device and the terminal device may include hardware structures and/or software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules . Whether a certain function of the above functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and configuration constraints of the technical solution.
  • FIG. 6 shows a communication device provided by an embodiment of the present application.
  • the communication device may be a terminal device, or a device in the terminal device, or a device that can be matched and used with the terminal device.
  • FIG. 6 shows that the communication apparatus is a terminal device 600 as an example.
  • the terminal device 600 may be the aforementioned second terminal device.
  • the terminal device 600 may include: a transceiver module 601 and a processing module 602 .
  • a transceiver module configured to receive a first synchronization signal block SSB from a network device, wherein the first SSB is a first type SSB of the first terminal device;
  • a processing module configured to determine a first control resource set and/or a first common search space according to the first SSB if the first SSB is a second type SSB of the second terminal device.
  • a transceiver module configured to receive a second SSB from the network device if the first SSB is a first type SSB of the second terminal device, and the processing module is configured to receive a second SSB from the network device according to the The second SSB determines a second set of control resources and/or a second common search space.
  • the first SSB includes first indication information, wherein,
  • the first indication information is a first value
  • the first indication information is used to indicate that the first SSB is the second type SSB of the second terminal device
  • the first indication information is used to indicate that the first SSB is a first-type SSB of the second terminal device.
  • the first indication information corresponds to the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the frequency range FR1 in the first SSB. At least one of the reserved fields carries.
  • the first SSB further includes second indication information, wherein,
  • the second indication information is used to indicate offset information of the second SSB.
  • the offset information of the second SSB includes: first offset information of the global synchronization channel number GSCN of the second SSB relative to the GSCN of the first SSB;
  • the second indication information includes a first bit and a second bit, wherein,
  • the second bit is used to indicate the first offset information of the GSCN of the second SSB relative to the first SSB;
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • the is the GSCN of the second SSB, the represents the GSCN of the first SSB, the represents the first offset, the a is the value indicated by the first bit, the value of a is 1 or -1, the n is the adjustment coefficient, the Indicates first offset information of the GSCN of the second SSB relative to the GSCN of the first SSB.
  • the offset information of the second SSB includes: second offset information of the GSCN of the second SSB relative to the GSCN of the first SSB;
  • the second indication information includes a first bit and a second bit, wherein,
  • the second bit is used to indicate second offset information of the GSCN of the second SSB relative to the GSCN of the first SSB;
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • the is the GSCN of the second SSB
  • the a is the value indicated by the first bit
  • the value of a is 1 or -1
  • the n is the adjustment coefficient
  • the offset information of the second SSB includes: the GSCN offset of the second SSB;
  • the second indication information includes a first bit and a second bit, wherein,
  • the first bit is used to indicate that the GSCN offset of the second SSB is a positive offset, or the GSCN offset of the second SSB is a negative offset;
  • the second bit is used to indicate the GSCN offset of the second SSB
  • the frequency range of the second SSB is:
  • the is the GSCN of the first SSB, the is the initial value of GSCN, the b is the value indicated by the first bit, the value of b is 1 or -1, the n is the adjustment coefficient, the end value for GSCN, the Indicates the GSCN offset of the second SSB.
  • the second indication information corresponds to the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the frequency range FR1 in the first SSB. At least one of the reserved fields carries.
  • the first SSB includes third indication information, wherein,
  • the third indication information is used to indicate the first control resource set and/or the first common search space.
  • the third indication information is corresponding to the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field and the frequency range FR1 in the first SSB. At least one of the reserved fields carries.
  • a processing module configured to receive a first synchronization signal block SSB from a network device through a transceiver module, wherein the first SSB is a first type SSB of the first terminal device;
  • the processing module if the first SSB is the first type SSB of the second terminal device, is configured to receive the second SSB from the network device through the transceiver module, and determine the second control resource set and the second control resource set according to the second SSB. / or a second common search space;
  • the first SSB includes first indication information, and a second value of the first indication information is used to indicate that the first SSB is a first type SSB of the second terminal device;
  • the first indication information is obtained through at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the first SSB.
  • a field bearer
  • FIG. 7 shows a communication device provided by an embodiment of the present application.
  • the communication device may be a network device, a device in the network device, or a device that can be used in conjunction with the network device.
  • FIG. 7 shows that the communication device is a network device 700 as an example.
  • the network device 700 may include: a transceiver module 701 and a processing module 702 .
  • a processing module configured to send a first synchronization signal block SSB to the second terminal device through the transceiver module, wherein the first SSB is the first type SSB of the first terminal device;
  • the first SSB is used to indicate the first control resource set and/or the first common search space to the second terminal device.
  • a transceiver module configured to send a second SSB to the second terminal device
  • the second SSB is used to indicate the second control resource set and/or the second common search space to the second terminal device.
  • the first SSB includes first indication information, wherein,
  • the first indication information is a first value
  • the first indication information is used to indicate that the first SSB is the second type SSB of the second terminal device
  • the first indication information is used to indicate that the first SSB is a first-type SSB of the second terminal device.
  • the first indication information corresponds to the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the frequency range FR1 in the first SSB. At least one of the reserved fields carries.
  • the first SSB further includes second indication information, wherein,
  • the second indication information is used to indicate offset information of the second SSB.
  • the offset information of the second SSB includes: first offset information of the global synchronization channel number GSCN of the second SSB relative to the GSCN of the first SSB;
  • the second indication information includes a first bit and a second bit, wherein,
  • the second bit is used to indicate the first offset information of the GSCN of the second SSB relative to the GSCN of the first SSB;
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • the is the GSCN of the second SSB, the represents the GSCN of the first SSB, the represents the first offset, the a is the value indicated by the first bit, the value of a is 1 or -1, the n is the adjustment coefficient, the Indicates first offset information of the GSCN of the second SSB relative to the GSCN of the first SSB.
  • the offset information of the second SSB includes: second offset information of the GSCN of the second SSB relative to the GSCN of the first SSB;
  • the second indication information includes a first bit and a second bit, wherein,
  • the second bit is used to indicate second offset information of the GSCN of the second SSB relative to the GSCN of the first SSB;
  • the GSCN of the second SSB and the GSCN of the first SSB satisfy the following relationship:
  • the is the GSCN of the second SSB
  • the a is the value indicated by the first bit
  • the value of a is 1 or -1
  • the n is the adjustment coefficient
  • the offset information of the second SSB includes: the GSCN offset of the second SSB;
  • the second indication information includes a first bit and a second bit, wherein,
  • the first bit is used to indicate that the GSCN offset of the second SSB is a positive offset, or the GSCN offset of the second SSB is a negative offset;
  • the second bit is used to indicate the GSCN offset of the second SSB
  • the frequency range of the second SSB is:
  • the is the GSCN of the first SSB, the is the initial value of GSCN, the b is the value indicated by the first bit, the value of b is 1 or -1, the n is the adjustment coefficient, the end value for GSCN, the Indicates the GSCN offset of the second SSB.
  • the second indication information corresponds to the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the frequency range FR1 in the first SSB. At least one of the reserved fields carries.
  • the first SSB includes third indication information, where the third indication information is used to indicate the first control resource set and/or the first common search space.
  • the third indication information corresponds to the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the frequency range FR1 in the first SSB. At least one of the reserved fields carries.
  • a processing module configured to send a first synchronization signal block SSB to the second terminal device through the transceiver module, wherein the first SSB is the first type SSB of the first terminal device;
  • a processing module configured to send the second SSB to the second terminal device through the transceiver module
  • the second SSB is used to indicate the second control resource set and/or the second common search space to the second terminal device
  • the first SSB includes first indication information, and a second value of the first indication information is used to indicate that the first SSB is a first type SSB of the second terminal device;
  • the first indication information is obtained through at least one of the common subcarrier spacing field, the demodulation reference signal type A location field, the intra-frequency reselection field, the idle field, and the reserved field corresponding to the frequency range FR1 in the first SSB.
  • a field bearer
  • an apparatus 800 provided by an embodiment of the present application is used to implement the function of the second terminal device in the foregoing method.
  • the apparatus may be the second terminal device, or may be a device in the second terminal device, or a device that can be matched and used with the second terminal device.
  • the device may be a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the apparatus 800 includes at least one processor 820, configured to implement the function of the second terminal device in the method provided in the embodiment of the present application.
  • the processor 820 may receive information such as downlink control information, configuration information of a control resource set, and the like, and parse the above information. For details, refer to the detailed description in the method example, which will not be repeated here.
  • the apparatus 800 may also include at least one memory 830 for storing program instructions and/or data.
  • Memory 830 is coupled to processor 820 .
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 820 may cooperate with memory 830 .
  • Processor 820 may execute program instructions stored in memory 830 . At least one of the at least one memory may be included in the processor.
  • the apparatus 800 may also include a communication interface, which may be implemented in various ways.
  • the communication interface may be a transceiver, an interface, a bus, a circuit, a pin, or a
  • the apparatus for implementing the transceiver function is illustrated in FIG. 8 with a communication interface as the transceiver 810.
  • the transceiver 810 is used for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 800 can communicate with other devices.
  • the other device may be a network device.
  • the processor 820 uses the transceiver 810 to send and receive data, and is configured to implement the method executed by the second terminal device described in the embodiment corresponding to FIG. 1 .
  • the specific connection medium between the transceiver 810, the processor 820, and the memory 830 is not limited in the embodiments of the present application.
  • the memory 830, the processor 820, and the transceiver 810 are connected through a bus 840 in FIG. 8.
  • the bus is represented by a thick line in FIG. 8, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 8, but it does not mean that there is only one bus or one type of bus.
  • an apparatus 900 provided by an embodiment of the present application is used to implement the function of the network device in the foregoing method.
  • the device may be a network device, or a device in a network device, or a device that can be matched and used with the network device. Wherein, the device may be a chip system.
  • the apparatus 900 includes at least one processor 920, configured to implement the function of the network device in the method provided by the embodiment of the present application.
  • the processor 920 may generate and send information such as downlink control information, configuration information of a control resource set, etc. For details, refer to the detailed description in the method example, which will not be repeated here.
  • the apparatus 900 may also include at least one memory 930 for storing program instructions and/or data.
  • Memory 930 is coupled to processor 920 .
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 920 may cooperate with memory 930 .
  • Processor 920 may execute program instructions stored in memory 930 . At least one of the at least one memory may be included in the processor.
  • the apparatus 900 may also include a communication interface. The communication interface may be implemented in multiple ways.
  • the communication interface may be a transceiver, an interface, a bus, a circuit, or a transceiver capable of implementing a transceiver function
  • the communication interface is used as an example for the transceiver 99, and the transceiver 99 is used to communicate with other devices through a transmission medium, so that the device used in the device 900 can communicate with other devices.
  • the other device may be a terminal device.
  • the processor 920 uses the transceiver 910 to send and receive data, and is configured to implement the method performed by the network device described in the embodiment corresponding to FIG. 1 .
  • the specific connection medium between the transceiver 910, the processor 920, and the memory 930 is not limited in the embodiments of the present application.
  • the memory 930, the processor 920, and the transceiver 910 are connected through a bus 940 in FIG. 9.
  • the bus is represented by a thick line in FIG. 9, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 9, but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which can implement or
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory (volatile memory), for example Random-access memory (RAM).
  • Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the memory in this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and/or data.
  • the technical solutions provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented in software, it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a terminal device, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media integrated.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, digital video discs (DVDs)), or semiconductor media, and the like.
  • the embodiments may refer to each other.
  • the methods and/or terms between the method embodiments may refer to each other, such as the functions and/or the device embodiments.
  • terms may refer to each other, eg, functions and/or terms between an apparatus embodiment and a method embodiment may refer to each other.

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Abstract

本申请实施例提供了一种同步信号块的传输方法和通信装置。其中，该方法包括：从网络设备接收第一同步信号块SSB，其中，第一SSB是第一终端设备的第一类型SSB；若第一SSB是第二终端设备的第二类型SSB，根据第一SSB确定第一控制资源集和/或第一公共搜索空间。该方法中，第二终端设备和第一终端设备对第一SSB的类型识别结果可以是不同的，第二终端设备和第一终端设备对第一SSB的使用方式可以不同，例如第二终端设备可以根据第一SSB确定第一控制资源集和/或第一公共搜索空间，从而提高了SSB的利用率。

Description

一种同步信号块的传输方法和通信装置
本申请要求于2020年7月31日提交中国国家知识产权局、申请号为202010770403.X、发明名称为“一种同步信号块的传输方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种同步信号块的传输方法和通信装置。
背景技术
为了应对未来爆炸性的移动数据流量增长、海量移动通信的设备连接、和/或不断涌现的各类新业务和应用场景，第五代(5th generation，5G)移动通信系统应运而生。例如5G移动通信系统中定义了三大类应用场景：增强型移动宽带(enhanced mobile broadband，eMBB)场景、高可靠低时延通信(ultrareliable and low latencycommunications，URLLC)场景以及海量机器类通信(massive machine type communications，mMTC)场景。
示例性的，eMBB场景包括：超高清视频、增强现实(augmented reality，AR)、和/或虚拟现实(virtual reality，VR)等。这些业务的主要特点是传输数据量大、且传输速率高。URLLC场景包括：工业制造或生产流程中的无线控制、无人驾驶汽车或无人驾驶飞机的运动控制、无人驾驶汽车或无人驾驶飞机的远程修理、和/或远程手术等触觉交互类应用。这些业务的主要特点是要求传输的超高可靠性和低延时。此外，这些业务的特点还可以包括传输数据量较少、和/或具有突发性。mMTC场景包括：智能电网配电自动化、可穿戴设备的通信、和/或智慧城市等。这些业务的主要特点是联网设备数量多、和/或传输数据量较小。此外，mMTC场景中的终端设备可能需要满足低成本、和/或相对较长的待机时间的需求。
发明内容
本申请实施例提供了一种同步信号块的传输方法和通信装置，用于提高SSB的利用率。
为解决上述技术问题，本申请实施例提供以下技术方案：
第一方面，本申请实施例提供一种同步信号块的传输方法，包括：从网络设备接收第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；若所述第一SSB是第二终端设备的第二类型SSB，根据所述第一SSB确定第一控制资源集和/或第一公共搜索空间。
例如,第一终端设备是传统(Legacy)终端设备,第一类型SSB是Non-CD-SSB,第二终端设备是REDCAP终端设备,第二类型SSB是CD-SSB。在上述方案中，第一SSB对于第二终端设备和第一终端设备而言可以是不同类型的SSB，例如第一SSB是第一终端设备的第一类型SSB，且第一SSB是第二终端设备的第二类型SSB。因此第二终端设备和第一终端设备对第一SSB的类型识别结果是不同的，第二终端设备和第一终端设备对第一SSB的使用方式可以不同。例如第二终端设备可以根据第一SSB确定第一控制资源集和/或第一公共搜索空间，因此第二终端设备可以使用该第一SSB确定出的第一控制资源集和/或第一公共搜 索空间，从而提高了SSB的利用率。另外，若网络设备发送的第一SSB可以被第二终端设备用于确定第一控制资源集和/或第一公共搜索空间，则网络设备无需再发送其他的SSB用于指示第二终端设备确定第一控制资源集和/或第一公共搜索空间，因此网络设备也可以降低发送更多SSB的开销。
在一种可能的实现方式中，所述方法还包括：若所述第一SSB是所述第二终端设备的第一类型SSB，从所述网络设备接收第二SSB，根据所述第二SSB确定第二控制资源集和/或第二公共搜索空间。在上述方案中，第二终端设备可以从网络设备接收第二SSB，根据第二SSB确定第二控制资源集和/或第二公共搜索空间，第二终端设备获取到第二控制资源集和第二公共搜索空间之后，第二终端设备可以使用第二控制资源集和第二公共搜索空间确定PDCCH的候选资源，在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息，使用该系统信息接入到网络中。
在一种可能的实现方式中，所述第一SSB包括第一指示信息，其中，所述第一指示信息为第一值时，所述第一指示信息用于指示所述第一SSB是所述第二终端设备的第二类型SSB。
在一种可能的实现方式中，所述第一SSB包括第一指示信息，其中，所述第一指示信息为第二值时，所述第一指示信息用于指示所述第一SSB是所述第二终端设备的第一类型SSB。
在上述方案中，第一指示信息在SSB中的实现方式有多种，例如第一指示信息可以是SSB中的新增字段，或者第一指示信息可以是SSB中的保留字段，或者第一指示信息可以是SSB中的原有字段。第二终端设备通过解读SSB携带的信息，可以获取到第一指示信息，实现网络设备向第二终端设备指示SSB的SSB类型的目的。
在一种可能的实现方式中，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。在上述方案中，网络设备可以使用SSB中的一个或多个字段承载第一指示信息。例如，网络设备可以使用SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个(或一个或多个)字段承载第一指示信息。例如网络设备可使用SSB中的上述一个字段承载第一指示信息，或者使用SSB中的上述多个字段承载第一指示信息。SSB中承载第一指示信息所使用的具体字段名称以及具体的字段个数不做限定。第二终端设备通过解析SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段，可以得到第一指示信息。通过这种方法，可以在不增加信令开销的条件下承载第一指示信息。
在一种可能的实现方式中，所述第一SSB还包括第二指示信息，其中，所述第二指示信息用于指示第二SSB的偏移信息。在上述方案中，第二终端设备通过从第一SSB中获取到第二SSB的偏移信息，从而第二终端设备可以根据该偏移信息接收网络设备发送的第二SSB。第二终端设备通过第二SSB可以确定公共PDCCH的候选资源，在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息，使用该系统信息接入到网络中。通过该方法，可以使得第二终端设备快速搜索到第二SSB，从而节省第二终端设备的功耗。
在一种可能的实现方式中，所述第二SSB的偏移信息包括：所述第二SSB的全局同步信道号GSCN相对于所述第一SSB的GSCN的第一偏移量信息；所述第二指示信息包括第一比特位和第二比特位，其中，所述第二比特位用于指示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第一偏移量信息；所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000001
其中，所述
Figure PCTCN2021109645-appb-000002
为所述第二SSB的GSCN，所述
Figure PCTCN2021109645-appb-000003
表示所述第一SSB的GSCN，所述
Figure PCTCN2021109645-appb-000004
表示第一偏移量，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000005
表示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第一偏移量信息。
一种可能的实现方式中，第二指示信息包括第一比特位和第二比特位，其中，
第二SSB的GSCN与第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000006
其中，
Figure PCTCN2021109645-appb-000007
为第二SSB的GSCN，
Figure PCTCN2021109645-appb-000008
表示第一SSB的GSCN，
Figure PCTCN2021109645-appb-000009
表示第一偏移量，a为第一比特位指示的值，a的取值为1或-1，n为调节系数，
Figure PCTCN2021109645-appb-000010
表示第二比特位指示的值。
Figure PCTCN2021109645-appb-000011
为大于或等于0的实数。
在上述方案中，第二终端设备可以从第一SSB包括的第二指示信息中获取到第一比特位和第二比特位，第一比特位和第二比特位在第二指示信息中的比特位置不做限定。其中，第一比特位指示了a的取值，n可以为调节系数。例如n的取值可以是预设的，例如，n为协议预定义的系数。第二比特位指示了第二SSB的GSCN相对于第一SSB的GSCN的第一偏移量信息，类似上述等式，第二终端设备可以获取到第二SSB的GSCN。
在一种可能的实现方式中，第一终端设备是传统(Legacy)终端设备,第一类型是Non-CD-SSB,第二终端设备是REDCAP终端设备,第二类型是CD-SSB。第一SSB中包括B1比特，B1比特指示SSB对REDCAP终端设备是否为Non-CD-SSB，例如B1＝1时表示该SSB对REDCAP终端设备为Non-CD-SSB，B1＝0时表示该SSB对REDCAP终端设备是CD-SSB。第一SSB中还包括B2比特，则B2可以表示以下两个含义：若B1＝1，即该SSB对REDCAP终端设备为Non-CD-SSB时，B2指示一个相对于传统终端设备的新SSB频点的偏移(offset)值，用于REDCAP终端设备跳转REDCAP终端设备的CD-SSB上。若B1＝0，即该SSB对REDCAP终端设备为CD-SSB时，B2用于指示CORESET#0和/或CSS，使REDCAP终端设备在所指示的时频范围内搜索下行控制信息，搜索到下行控制信息后，根据下行控制信息的指示获得系统信息。
在一种可能的实现方式中，B2比特用于指示REDCAP终端设备的CD-SSB的频率信息。例如B2比特表示一个GSCN的偏移量，B2可以是第二指示信息中的第一比特位和第二比特位。
在一种可能的实现方式中，利用B2比特实现向REDCAP终端设备指示CORESET#0和/或CSS，可以是如下方法中的任意一种：
方法一：CORESET#0为协议预定义的值，B2比特用于指示CSS。
方法二：CSS为协议预定义的值，B2比特用于指示CORESET#0。
方法三：B2＝B21+B22，B2比特中的B21比特指示CORESET#0，B22比特指示CSS， B21和B22为大于等于零的整数。
在一种可能的实现方式中，所述第二SSB的偏移信息包括：所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息；所述第二指示信息包括第一比特位和第二比特位，其中，所述第二比特位用于指示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息；所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000012
其中，所述
Figure PCTCN2021109645-appb-000013
为所述第二SSB的GSCN，所述
Figure PCTCN2021109645-appb-000014
表示所述第一SSB的GSCN，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000015
表示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息。
一种可能的实现方式中，第二指示信息包括第一比特位和第二比特位，其中，
第二SSB的GSCN与第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000016
其中，
Figure PCTCN2021109645-appb-000017
为第二SSB的GSCN，
Figure PCTCN2021109645-appb-000018
表示第一SSB的GSCN，a为第一比特位指示的值，a的取值为1或-1，n为调节系数，
Figure PCTCN2021109645-appb-000019
表示第二比特位指示的值。n为大于或等于0的实数。
在上述方案中，第二终端设备可以从第一SSB包括的第二指示信息中获取到第一比特位和第二比特位，第一比特位和第二比特位在第二指示信息中的比特位置不做限定。其中，第一比特位指示了a的取值，n可以为调节系数，例如n的取值可以是预设的，例如，n为协议预定义的系数。第二比特位指示了第二SSB的GSCN的偏移量相对于第一SSB的GSCN的偏移量。因此基于上述等式，第二终端设备可以获取到第二SSB的GSCN。
在一种可能的实现方式中，所述第二SSB的偏移信息包括：所述第二SSB的GSCN偏移量；所述第二指示信息包括第一比特位和第二比特位，其中，所述第一比特位用于指示所述第二SSB的GSCN偏移量为正向偏移量，或者所述第二SSB的GSCN偏移量为负向偏移量；所述第二比特位用于指示所述第二SSB的GSCN偏移量；所述第二SSB的频率范围为：
Figure PCTCN2021109645-appb-000020
其中，所述
Figure PCTCN2021109645-appb-000021
为所述第一SSB的GSCN，所述
Figure PCTCN2021109645-appb-000022
为GSCN起始值，所述b为所述第一比特位指示的值，b的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000023
为GSCN结束值，所述
Figure PCTCN2021109645-appb-000024
表示所述第二SSB的GSCN偏移量。
一种可能的实现方式中，所述第二SSB的偏移信息包括：所述第二SSB的GSCN偏移量；所述第二指示信息包括第一比特位和第二比特位；所述第二SSB的频率范围为：
Figure PCTCN2021109645-appb-000025
其中，所述
Figure PCTCN2021109645-appb-000026
为所述第一SSB的GSCN，所述
Figure PCTCN2021109645-appb-000027
为GSCN起始值，所述b为所述第一比特位指示的值，b的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000028
为GSCN结束值，所述
Figure PCTCN2021109645-appb-000029
为所述第二比特位指示的值。
在上述方案中，
Figure PCTCN2021109645-appb-000030
为GSCN起始值，
Figure PCTCN2021109645-appb-000031
为GSCN结束值。GSCN起始值和GSCN结束值可以是MIB指示的值，例如MIB中的pdcch-ConfigSIB1字段可用于指示GSCN起始值和GSCN结束值，GSCN起始值可以通过pdcch-ConfigSIB1字段的高4个比特进行指示，GSCN结束值可以通过pdcch-ConfigSIB1字段的低4个比特进行指示。第二终端设备 可以从第一SSB包括的第二指示信息中获取到第一比特位和第二比特位。第一比特位和第二比特位在第二指示信息中的比特位置不做限定。其中，第一比特位指示了b的取值，n可以为调节系数，例如n的取值可以是预设的，例如，n为协议预定义的系数。第二比特位指示了第二SSB的GSCN的偏移量。第二SSB的GSCN偏移量可以用于确定出第二SSB的频率范围。
在一种可能的实现方式中，所述第二指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。在上述方案中，网络设备可以使用SSB中的一个或多个字段承载第二指示信息。例如，网络设备可以使用SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个(或一个或多个)字段承载第二指示信息。例如网络设备可使用SSB中的上述一个字段承载第二指示信息，或者使用SSB中的上述多个字段承载第二指示信息。本申请实施例中，SSB中承载第二指示信息所使用的具体字段名称以及具体的字段个数不做限定。第二终端设备通过解析SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段，可以得到第二指示信息。通过这种方法，可以在不增加信令开销的条件下承载第二指示信息。
在一种可能的实现方式中，所述第一SSB包括第三指示信息，其中，所述第三指示信息，用于指示所述第一控制资源集和/或所述第一公共搜索空间。在上述方案中，第二终端设备获取到第一控制资源集和第一公共搜索空间之后，第二终端设备可以使用第一控制资源集和第一公共搜索空间确定PDCCH的搜索空间，在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息，使用该系统信息接入到网络中。
在一种可能的实现方式中，所述第三指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。在上述方案中，网络设备可以使用SSB中的一个或多个字段承载第三指示信息。例如，网络设备可以使用SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个(或一个或多个)字段承载第三指示信息。例如网络设备可使用SSB中的上述一个字段承载第三指示信息，或者使用SSB中的上述多个字段承载第三指示信息。本申请实施例中，SSB中承载第三指示信息所使用的具体字段名称以及具体的字段个数不做限定。第二终端设备通过解析SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段，可以得到第三指示信息。通过这种方法，可以在不增加信令开销的条件下承载第三指示信息。
第二方面，本申请实施例还提供一种同步信号块的传输方法，包括：从网络设备接收第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；若所述第一SSB是所述第二终端设备的第一类型SSB，从所述网络设备接收第二SSB，根据所述第二SSB确定第二控制资源集和/或第二公共搜索空间；其中，所述第一SSB包括第一指示信息，所述第一指示信息的第二值用于指示所述第一SSB是所述第二终端设备的第一类型SSB；其中，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型 A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
在上述方案中，网络设备可以使用SSB中的一个或多个字段承载第一指示信息。例如，网络设备可以使用SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个(或一个或多个)字段承载第一指示信息。例如网络设备可使用SSB中的上述一个字段承载第一指示信息，或者使用SSB中的上述多个字段承载第一指示信息。SSB中承载第一指示信息所使用的具体字段名称以及具体的字段个数不做限定。第二终端设备通过解析SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段，可以得到第一指示信息。通过这种方法，可以在不增加信令开销的条件下承载第一指示信息。
在一种可能的实现方式中，所述第一SSB还包括第二指示信息，其中，所述第二指示信息用于指示第二SSB的偏移信息。
在一种可能的实现方式中，所述第二SSB的偏移信息包括：所述第二SSB的全局同步信道号GSCN相对于所述第一SSB的GSCN的第一偏移量信息；所述第二指示信息包括第一比特位和第二比特位，其中，所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000032
其中，所述
Figure PCTCN2021109645-appb-000033
为所述第二SSB的GSCN，所述
Figure PCTCN2021109645-appb-000034
表示所述第一SSB的GSCN，所述
Figure PCTCN2021109645-appb-000035
表示第一偏移量，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000036
为所述第二比特位指示的值。
在一种可能的实现方式中，所述第二SSB的偏移信息包括：所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息；所述第二指示信息包括第一比特位和第二比特位，其中，所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000037
其中，所述
Figure PCTCN2021109645-appb-000038
为所述第二SSB的GSCN，所述
Figure PCTCN2021109645-appb-000039
表示所述第一SSB的GSCN，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000040
为所述第二比特位指示的值。
在一种可能的实现方式中，所述第二SSB的偏移信息包括：所述第二SSB的GSCN偏移量；所述第二指示信息包括第一比特位和第二比特位，其中，
所述第二SSB的频率范围为：
Figure PCTCN2021109645-appb-000041
其中，所述
Figure PCTCN2021109645-appb-000042
为所述第一SSB的GSCN，所述
Figure PCTCN2021109645-appb-000043
为GSCN起始值，所述b为所述第一比特位指示的值，b的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000044
为GSCN结束值，所述
Figure PCTCN2021109645-appb-000045
为所述第二比特位指示的值。
在一种可能的实现方式中，所述第二指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
第三方面，本申请实施例还提供一种同步信号块的传输方法，包括：向第二终端设备 发送第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；其中，若所述第一SSB是第二终端设备的第二类型SSB，所述第一SSB用于向所述第二终端设备指示第一控制资源集和/或第一公共搜索空间。
在一种可能的实现方式中，若所述第一SSB是所述第二终端设备的第一类型SSB，所述方法还包括：向所述第二终端设备发送第二SSB；其中，所述第二SSB用于向所述第二终端设备指示第二控制资源集和/或第二公共搜索空间。
关于所述第一SSB和第二SSB的详细介绍参见第一方面，这里不再赘述。
第四方面，本申请实施例还提供一种同步信号块的传输方法，包括：向第二终端设备发送第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；若所述第一SSB是所述第二终端设备的第一类型SSB，向所述第二终端设备发送第二SSB；其中，所述第二SSB用于向所述第二终端设备指示第二控制资源集和/或第二公共搜索空间；其中，所述第一SSB包括第一指示信息，所述第一指示信息的第二值用于指示所述第一SSB是所述第二终端设备的第一类型SSB；其中，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
关于所述第一SSB和第二SSB的详细介绍参见第二方面，这里不再赘述。
第五方面，本申请实施例提供一种装置，该装置可以是第二终端设备，也可以是第二终端设备中的装置，或是能够和第二终端设备匹配使用的装置。一种配置中，该装置可以包括执行第一方面或第二方面中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。一种配置中，该装置可以包括处理模块和收发模块。示例性地，
一种可能的实现中：
收发模块，用于从网络设备接收第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
处理模块，用于若所述第一SSB是第二终端设备的第二类型SSB，根据所述第一SSB确定第一控制资源集和/或第一公共搜索空间。
一种可能的实现中：
处理模块，用于通过收发模块从网络设备接收第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
处理模块，若所述第一SSB是所述第二终端设备的第一类型SSB，用于通过收发模块从所述网络设备接收第二SSB，根据所述第二SSB确定第二控制资源集和/或第二公共搜索空间；
其中，所述第一SSB包括第一指示信息，所述第一指示信息的第二值用于指示所述第一SSB是所述第二终端设备的第一类型SSB；
其中，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
在第五方面中,处理模块执行的方法详见前述第一方面或第二方面中的说明。
第六方面，本申请实施例提供一种装置，该装置可以是网络设备，也可以是网络设备中的装置，或是能够和网络设备匹配使用的装置。一种配置中，该装置可以包括执行第三方面或第四方面中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。一种配置中，该装置可以包括处理模块和收发模块。示例性地，
一种可能的实现中：
处理模块，用于通过收发模块向第二终端设备发送第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
其中，若所述第一SSB是第二终端设备的第二类型SSB，所述第一SSB用于向所述第二终端设备指示第一控制资源集和/或第一公共搜索空间。
一种可能的实现中：
处理模块，用于通过收发模块向第二终端设备发送第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
处理模块，若所述第一SSB是所述第二终端设备的第一类型SSB，用于通过收发模块向所述第二终端设备发送第二SSB；
其中，所述第二SSB用于向所述第二终端设备指示第二控制资源集和/或第二公共搜索空间；
其中，所述第一SSB包括第一指示信息，所述第一指示信息的第二值用于指示所述第一SSB是所述第二终端设备的第一类型SSB；
其中，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
在第六方面中,处理模块执行的方法详见前述第三方面或第四方面中的说明。
第七方面，本申请实施例提供一种装置，所述装置包括处理器，用于实现上述第一方面或第二方面描述的方法。可选的，所述装置还可以包括存储器，用于存储指令和数据。所述存储器与所述处理器耦合，所述处理器执行所述存储器中存储的指令时，可以实现上述第一方面或第二方面描述的方法。所述装置还可以包括通信接口，所述通信接口用于该装置与其它设备进行通信，示例性的，通信接口可以是收发器、电路、总线、模块、管脚或其它类型的通信接口，其它设备可以为网络设备。在一种可能的设备中，该装置包括：
存储器，用于存储程序指令；
处理器，用于利用通信接口，执行前述第一方面或第二方面的方法，此处不再具体限定。
第八方面，本申请实施例提供一种装置，所述装置包括处理器，用于实现上述第三方面或第四方面描述的方法。可选的，所述装置还可以包括存储器，用于存储指令和数据。所述存储器与所述处理器耦合，所述处理器执行所述存储器中存储的指令时，可以实现上述第三方面或第四方面描述的方法。所述装置还可以包括通信接口，所述通信接口用于该装置与其它设备进行通信，示例性的，通信接口可以是收发器、电路、总线、模块、管脚或其它类型的通信接口，其它设备可以为第二终端设备或第一终端设备。在一种可能的设 备中，该装置包括：
存储器，用于存储程序指令；
处理器，用于利用通信接口，执行前述第三方面或第四方面的方法，此处不再具体限定。
第九方面，本申请实施例中还提供一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行第一方面至第四方面中任一方面所述的方法。
第十方面，本申请实施例中还提供一种计算机程序产品，包括指令，当其在计算机上运行时，使得计算机执行第一方面至第四方面中任一方面所述的方法。
第十一方面，本申请实施例提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现上述第一方面至第四方面中任一方面所述的方法。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第十二方面，本申请实施例提供了一种系统，所述系统包括：第五方面所述的装置、和第六方面所述的装置；或者，第七方面所述的装置、和第八方面所述的装置。
附图说明
图1为本申请实施例提供的一种通信方法的交互流程示意图；
图2为本申请实施例提供的一种第一SSB的帧结构示意图；
图3为本申请实施例提供的REDCAP终端设备执行的同步信号块的传输方法的一种应用场景示意图；
图4为本申请实施例提供的确定CORESET#0的示意图；
图5为本申请实施例提供的确定CSS的示意图；
图6为本申请实施例提供的一种终端设备的结构示意图；
图7为本申请实施例提供的一种网络设备的结构示意图；
图8为本申请实施例提供的一种装置的结构示意图；
图9为本申请实施例提供的一种装置的结构示意图。
具体实施方式
本申请实施例提供了一种同步信号块的传输方法和通信装置，用于提高SSB的利用率。
下面结合附图，对本申请的实施例进行描述。
本申请实施例提供的技术方案可以应用于各种通信系统，例如，长期演进(long term evolution,LTE)系统、5G移动通信系统、无线保真(wireless-fidelity，WiFi)系统、未来的第六代等通信系统、或多种通信系统融合的系统等，本申请实施例不做限定。其中，5G移动通信还可以称为新无线(new radio,NR)移动通信系统。
本申请实施例提供的技术方案可以应用于各种通信场景，例如可以应用于以下通信场景中的一种或多种：eMBB、URLLC、mMTC、设备到设备(device-to-device，D2D)通信、车辆外联(vehicle to everything，V2X)通信、车辆到车辆(vehicle to vehicle，V2V)通信、和物联网(internet of things，IoT)等。
在无线通信系统中包括通信设备，通信设备间可以利用空口资源进行无线通信。其中， 通信设备可以包括网络设备和终端设备，网络设备还可以称为网络侧设备。空口资源可以包括时域资源、频域资源、码资源和空间资源中的至少一种。在本申请实施例中，至少一个(种)还可以描述为一个(种)或多个(种)，多个(种)可以是两个(种)、三个(种)、四个(种)或更多个(种)，本申请实施例不做限制。例如，无线通信系统包括两个通信设备，分别为第一通信设备和第二通信设备，其中，第一通信设备可以是网络设备，第二通信设备可以是终端设备。
在本申请实施例中，“/”可以表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B，而在计算方式，“/”可以表示相除符号，N/M表示N除以M，N和M分别表示一种数值；“和/或”可以用于描述关联对象存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中，A，B可以是单数或复数。为了便于描述本申请实施例的技术方案，在本申请实施例中可以采用“第一”、“第二”、“A”、“B”等字样对功能相同或相似的技术特征进行区分。该“第一”、“第二”、“A”、“B”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”、“A”、“B”等字样也并不限定一定不同。在本申请实施例中，“示例性的”或“例如”等词用于表示例子、例证或说明，被描述为“示例性的”或“例如”的实施例或配置方案不应被解释为比其它实施例或配置方案更优选或更具优势。使用“示例性的”或“例如”等词旨在以具体方式呈现相关概念，便于理解。
本申请实施例涉及到的终端设备还可以称为终端，可以是一种具有无线收发功能的设备。终端设备可以部署在陆地上，包括室内或室外、手持或车载；或可以部署在水面上(如轮船等)；或可以部署在空中(例如飞机、气球或卫星上等)。终端设备可以是用户设备(user equipment，UE)，其中，UE包括具有无线通信功能的手持式设备、车载设备、可穿戴设备或计算设备。示例性地，UE可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑。或终端设备可以是虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的无线终端、智能电网中的无线终端、智慧城市(smart city)中的无线终端、或智慧家庭(smart home)中的无线终端等等。本申请实施例中，用于实现终端设备的功能的装置可以是终端设备，也可以是能够支持终端设备实现该功能的装置，例如芯片系统。该装置可以被安装在终端设备中，或该装置可以和终端设备匹配使用。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例中，以用于实现终端设备的功能的装置是终端设备为例，来具体描述本申请实施例提供的技术方案。
本申请实施例涉及到的网络设备包括基站(base station，BS)，可以是一种部署在无线接入网中能够和终端设备进行无线通信的设备。其中，基站可能有多种形式，比如宏基站、微基站、中继站或接入点等。示例性地，本申请实施例涉及到的基站可以是5G移动通信系统中的基站或LTE中的基站，其中，5G移动通信系统中的基站还可以称为传输接收点(transmission reception point，TRP)或gNB。本申请实施例中，用于实现网络设备的功能的装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统。该装置可以被安装在网络设备中，或该装置可以和网络设备匹配使用。在本申请实施例中，以用于实现网络设备的功能的装置是网络设备为例，来具体描述本申请实施例提供的技术 方案。
本申请实施例提供的技术方案可以应用于通信设备间的无线通信。通信设备间的无线通信可以包括：网络设备和终端设备间的无线通信、网络设备和网络设备间的无线通信、或终端设备和终端设备间的无线通信。其中，在本申请实施例中，术语“无线通信”还可以简称为“通信”，术语“通信”还可以描述为“数据传输”、“信息传输”、“信号传输”或“传输”。该技术方案可用于进行调度实体和从属实体间的无线通信，其中，调度实体可以为从属实体分配空口资源。本领域技术人员可以将本申请实施例提供的技术方案用于进行其它调度实体和从属实体间的无线通信，例如宏基站和微基站之间的无线通信，例如终端设备A和终端设备B间的无线通信。本申请实施例以网络设备和终端设备之间的通信为例进行描述。
在通信系统中，例如NR移动通信系统或者其它系统中，相对传统的终端设备，例如eMBB终端设备，可以引入一种轻型(light)终端设备。该轻型终端设备也可以称为降低能力(reduced capability，REDCAP)终端设备。其中，eMBB终端设备可以是能够传输eMBB业务的终端设备。REDCAP终端设备可以存在于mMTC场景中，但不限于mMTC场景中。mMTC场景中可以包括但不限于仅包括REDCAP终端设备。相对REDCAP终端设备，该传统的终端设备可以是高能力终端设备或能力不受限的终端设备。本申请实施例中，该传统的终端设备可以被替换为未来引进的、相对REDCAP终端设备的高能力终端设备。示例性地，高能力终端设备和REDCAP终端设备的能力对比满足以下第一项至第九项中的一项或多项。
第一项：高能力终端设备支持的最大带宽大于REDCAP终端设备支持的最大带宽。例如，高能力终端设备支持的最大带宽可以是100兆赫兹(MHz)或200MHz，REDCAP终端设备支持的最大带宽可以是20MHz、10MHz或者5MHz。
第二项：高能力终端设备的天线数多于REDCAP终端设备的天线数。其中，该天线数可以是终端设备的实际天线数，或者是能够用于发送和/或接收的最大天线数。例如，高能力终端设备最高支持4天线收2天线发，REDCAP终端设备最高支持2天线收1天线发。或者，即使高能力终端设备的天线数等于REDCAP终端设备的天线数，但是在天线选择性传输上能力不同。例如高能力终端设备与REDCAP终端设备都支持2天线发送，但是高能力终端设备支持天线选择性传输，而REDCAP终端设备不支持天线选择性传输。以单天线端口数据传输为例，高能力终端设备可以实现单天线端口数据传输在2个发送天线上切换，该数据传输可以获得空间分集增益；而REDCAP终端设备的单天线端口数据传输只能在2个发送天线上同时发送，等价于1个发送天线的传输性能。
第三项：高能力终端设备支持的最大发射功率大于REDCAP终端设备支持的最大发射功率。例如，高能力终端设备支持的最大发射功率是23分贝毫瓦(decibel-milliwatt，dBm)或者26dBm，REDCAP终端设备支持的最大发射功率是4dBm至20dBm中的一个值。
第四项：高能力终端设备支持载波聚合(carrier aggregation，CA)，REDCAP终端设备不支持载波聚合。
第五项：高能力终端设备和REDCAP终端设备都支持载波聚合时，高能力终端设备支持的最大载波数大于REDCAP终端设备支持的最大载波数。例如，高能力终端设备最多支 持32个载波或者5个载波的聚合，REDCAP终端设备最多支持2个载波的聚合。
第六项：高能力终端设备和REDCAP终端设备在不同的协议版本中被引入。例如，在NR协议中，高能力终端设备是在协议的版本(release，R)15中引入的终端设备，REDCAP终端设备是在协议R17中引入的终端设备。
第七项：高能力终端设备和REDCAP终端设备的双工能力不同。高能力终端设备的双工能力更强。例如高能力终端设备支持全双工频分双工(frequency division duplex，FDD)，即高能力终端设备在支持FDD时支持同时接收和发送，REDCAP终端设备支持半双工FDD，即REDCAP终端设备在支持FDD时不支持同时接收和发送。
第八项：高能力终端设备的数据处理能力比REDCAP终端设备的数据处理能力更强。高能力终端设备相同时间内可以处理的数据更多，或者高能力终端设备处理相同数据时处理时间更短。例如，记终端设备接收到来自网络设备的下行数据的时间为T1，终端设备处理该下行数据，记终端设备向网络设备发送该下行数据的反馈的时间为T2，高能力终端设备的T2和T1之间的时延(即时间差)小于REDCAP终端设备的T2和T1之间的时延。其中，下行数据的反馈可以是应答(acknowledgement，ACK)反馈或者否定应答(negative acknowledgement，NACK)反馈。
第九项：高能力终端设备的数据传输的峰值速率大于REDCAP终端设备的数据传输的峰值速率。其中，数据传输包括上行数据传输(即终端设备可以向网络设备发送数据)，和/或下行数据传输(即终端设备可以从网络设备接收数据)。
在本申请实施例中，对于终端设备的不同能力，可以包括多种能力类型的终端设备。例如，第一类型终端设备和第二类型终端设备可表示不同类型的两种终端设备。例如，第一类型终端设备可以是用于工业无线传感网络(industry wireless sensor network，IWSN)的终端设备，第二类型终端设备可以是用于视频监控(video surveillance)的终端设备。例如，第一类型终端设备可以是REDCAP终端设备，第二类型终端设备可以是高能力终端设备。例如，第一类型终端设备可以是REDCAP终端设备A，第二类型终端设备可以是REDCAP终端设备B，其中，REDCAP终端设备A和REDCAP终端设备B的以下能力中的一种或多种不同：带宽能力、天线数、发射功率、CA能力、双工能力和数据处理能力。例如，第一类型终端设备可以是用于工业无线传感网络的终端设备，第二类型终端设备可以是用于视频监控的终端设备和/或eMBB终端设备。
本申请实施例中，终端设备可以通过初始接入过程建立终端设备和网络设备之间的连接，从而终端设备可以和网络设备传输数据。在一种可能的实现中，终端设备(例如传统终端设备)的初始接入过程包括：检测来自网络设备的主同步信号(primary synchronization signal，PSS)和辅同步信号(secondary synchronization signal，SSS)，从而接收来自网络设备的同步信号块(synchronization signal band，SSB)，其中，SSB中包括PSS、SSS和物理广播信道(physical broadcast channel，PBCH)；从PBCH中获取主信息块(master information block，MIB)；如果根据该MIB确定SSB是小区定义同步信号块(cell-defined-SSB，CD-SSB)，则根据该MIB的指示确定公共搜索空间(common search space，CSS)和控制资源集合(controlresource set，CORESET)#0，如果根据该MIB确定SSB是非小区定义同步信号块(non-cell-defined-SSB，Non-CD-SSB)，则根据该Non-CD-SSB的指示搜索CD-SSB，根据 搜索到CD-SSB的MIB的指示确定CSS和CORESET#0；根据CORESET#0和CSS确定用于传输物理下行控制信道(physical downlink control channel，PDCCH)的候选资源，该PDCCH中携带下行控制信息(downlink control information，DCI)；在PDCCH的候选资源中检测DCI；检测到DCI后，根据该DCI指示的调度信息接收物理下行共享信道(physical downlink shared channel，PDSCH)，该PDSCH中携带小区的系统信息，即根据DCI的指示获取小区的系统信息；根据系统信息向网络设备发起随机接入过程，建立终端设备和网络设备之间的连接。
本申请实施例中将上述初始接入过程中的使用MIB确定SSB为CD-SSB、确定CSS和CORESET#0、根据CORESET#0和CSS确定PDCCH的候选资源、在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息的全过程合称为“通过SSB接入网络”、“利用或使用SSB接入网络”、或“根据SSB接入网络”等，后续内容不再对“通过SSB接入网络”、“利用或使用SSB接入网络”、或“根据SSB接入网络”的过程进行赘述。在上述过程中，当一个SSB对于终端设备(例如传统终端设备或REDCAP终端设备)是Non-CD-SSB时，终端设备无法根据该SSB进行随机接入过程，或终端设备无法使用或利用该SSB接入网络，需要根据该SSB再次搜索到CD-SSB后，才能进行随机接入过程。
在SSB部署时，网络设备可以在一个载波(carrier)上配置多个SSB。例如一个100兆赫兹(MHz)带宽的载波上，配置4个SSB，4个SSB中的1个SSB为CD-SSB，位于频段1，4个SSB中的其余3个SSB为Non-CD-SSB，位于频段2至频段4，其中，频段1至频段4可以位于该100MHz载波的不同频率位置，频段1至频段4互不重叠。网络设备可以给进入无线资源控制(radio resource control，RRC)连接态的终端设备配置带宽部分(bandwidthpart,BWP)，若配置给该终端设备的BWP包括频段2至频段4时，则终端设备可以测量频段2至频段4上的Non-CD-SSB，根据测量结果确定功率控制参数、判断是否进行小区切换等。处于非连接态(例如空闲态、或者非激活态)终端设备，在初始接入过程中，检测到Non-CD-SSB时，可以根据该Non-CD-SSB的指示，跳至频段1或其他配置了CD-SSB的频段上搜索CD-SSB。因此，目前的Non-CD-SSB的主要作用是使处于连接态的终端进行参考信号测量，或使非连接态的终端跳转到CD-SSB。
假设网络侧存在业务需求，需要REDCAP终端设备使用传统(Legacy)Non-CD-SSB所在的频段作为工作频段，且该频段不用于传统终端设备或高能力终端设备，例如该频段为工业专有网络。如果该传统Non-CD-SSB对于REDCAP终端设备也是Non-CD-SSB，则该Non-CD-SSB不能用于向REDCAP终端设备指示CORESET#0和/或CSS，即该Non-CD-SSB不能用于REDCAP终端设备获取系统信息，以及初始接入网络。因此网络设备需要广播更多的SSB用于REDCAP终端设备初始接入网络，存在广播SSB的资源的浪费问题。
为了解决上述技术问题，本申请实施例提出一种同步信号块的传输方法，适用于网络设备和多种类型终端设备之间的通信场景，REDCAP终端设备和传统终端设备需要通过不同类型的SSB来接入网络，以及需要根据不同类型的SSB接收各自需要的系统信息。
本申请实施例中对于一种终端设备(例如传统终端设备、eMBB终端设备、或URLLC终端设备等)而言是Non-CD-SSB的SSB，该SSB可以是另一种终端设备(例如REDCAP 终端设备)的CD-SSB，因此该另一种终端设备可以使用该一种终端设备无法用于接入网络的SSB进行随机接入，可以提高SSB的利用率。另外，网络设备广播的SSB可以被该另一种终端设备所使用，因此网络设备也可以减少广播更多的SSB，从而节省网络设备的功耗。
请参阅图1所示，为本申请实施例提供的网络设备和终端设备之间的一种交互流程示意图，在该交互流程中，图1所示的交互流程主要包括如下步骤：
101、网络设备向第二终端设备发送第一SSB，其中，第一SSB是第一终端设备的第一类型SSB。
网络设备可以管理一个或者多个(例如2个、3个或6个等)小区，第二终端设备可以在其中至少一个小区(例如第一小区)中和网络设备进行通信。以该至少一个小区是第一小区为例，网络设备可以在第一小区中广播第一SSB，第二终端设备可以在第一小区中搜索到第一SSB。例如，第二终端设备在协议规定的频点上或者可能存在SSB的频点上，通过检测PSS和SSS获取SSB。
第二终端设备和第一终端设备可以是两种不同类型的终端设备。为了便于描述，本申请实施例以下列情况为例进行描述：第二终端设备是REDCAP终端设备，第一终端设备是高能力终端设备，例如第一终端设备可以是eMBB终端设备。
其中，若第一SSB是第二终端设备的第二类型SSB，第一SSB用于向第二终端设备指示第一控制资源集和/或第一公共搜索空间。
本申请实施例中，网络设备可以配置第一SSB，该第一SSB对于不同类型的终端设备而言可以是不同类型的SSB，也可以是相同类型的SSB。例如第一SSB是第一终端设备的第一类型SSB，且第一SSB是第二终端设备的第二类型SSB。其中，第一类型SSB和第二类型SSB可表示的是不同类型的SSB。例如第一类型SSB可以是Non-CD-SSB，即第一类型SSB不指示CORESET#0和/或CSS。因而第一终端设备不能从第一SSB对应的频点接入网络，或者第一终端设备不能利用第一SSB接入网络。第二类型SSB可以是CD-SSB，即第二类型SSB指示CORESET#0和/或CSS。因而第二终端设备可以使用第一SSB接入网络。对于使用SSB接入网络的过程详见前述内容的描述，此处不再赘述。又如，第一类型SSB是终端设备不能够用于确定CORESET#0和/或CSS的SSB，第二类型SSB是终端设备能够用于确定CORESET#0和/或CSS的SSB。本申请实施例中对于第一类型SSB和第二类型SSB的实现方式不做限定，具体可以根据应用场景灵活配置第一类型SSB和第二类型SSB的实现方式。
需要说明的是，在本申请实施例中，同一个SSB对于不同类型的终端设备可以是不同的SSB类型，SSB类型可以包括第一类型SSB和第二类型SSB，不限定的是，本申请实施例还可以包括更多类型的SSB，例如第三类型SSB和第四类型SSB等等。
102、第二终端设备从网络设备接收第一SSB，其中，第一SSB是第一终端设备的第一类型SSB。
在本申请实施例中，第二终端设备可以接收由网络设备广播的第一SSB。第二终端设备可以解析该第一SSB，以获取到第一SSB携带的信息。第二终端设备可以判断该第一SSB的SSB类型。例如第二终端设备判断该第一SSB是否为第一终端设备的第一类型SSB，以 及第二终端设备判断该第一SSB是否为第二终端设备的第二类型SSB。基于前述对第一类型SSB和第二类型SSB的描述说明可知，该第一SSB对于不同类型的终端设备而言可以是不同类型的SSB，例如第一SSB是第一终端设备的第一类型SSB，且第一SSB是第二终端设备的第二类型SSB。
在第二终端设备确定第一SSB是第一终端设备的第一类型SSB、且第一SSB是第二终端设备的第二类型SSB的情况下，第二终端设备执行后续步骤103。
103、若第一SSB是第二终端设备的第二类型SSB，第二终端设备根据第一SSB确定第一控制资源集和/或第一公共搜索空间。
在本申请实施例中，当第一SSB是第一终端设备的第一类型SSB，且第一SSB是第二终端设备的第二类型SSB时，第二终端设备和第一终端设备可以对第一SSB执行不相同的处理方式。例如第一SSB是第一终端设备的Non-CD-SSB，第一终端设备可以使用该第一SSB跳转到新的CD-SSB上，或者利用该SSB进行测量。第一SSB是第一终端设备的Non-CD-SSB、且该第一SSB是第二终端设备的CD-SSB，第二终端设备可以根据第一SSB确定第一控制资源集和/或第一公共搜索空间。例如第一控制资源集可以是前述的CORESET#0，第一公共搜索空间可以是前述的CSS。第二终端设备在确定CORESET#0和CSS之后，可以根据CORESET#0和CSS确定PDCCH的候选资源，在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息，使用该系统信息接入到网络中,因此本申请实施例可以提高SSB的利用率。
不限定的是，在本申请实施例中，第一控制资源集和第一公共搜索空间可用于确定公共PDCCH的候选资源位置。其中，公共PDCCH所调度的PDSCH上可以承载小区公共信息，或者承载一组终端设备的公共信息。本申请实施例提供的技术方案中，第一控制资源集和第一公共搜索空间可以被替换为其他名称的参数，该参数用于确定公共PDCCH的候选资源位置。
本申请实施例中，第一SSB是第二终端设备的第二类型SSB时，第二终端设备可以根据第一SSB确定如下至少一种：第一控制资源集和第一公共搜索空间。例如第一SSB指示第一控制资源集的信息，第二终端设备可以使用第一SSB确定第一控制资源集，第二终端设备可以根据协议的预先规定确定第一公共搜索空间。又如，第一SSB指示第一公共搜索空间的信息，第二终端设备可以使用第一SSB确定第一公共搜索空间，第二终端设备可以根据协议的预先规定确定第一控制资源集。又如，第一SSB指示第一控制资源集的信息和第一公共搜索空间的信息，第二终端设备可以使用第一SSB确定第一控制资源集和第一公共搜索空间。本申请实施例中，第二终端设备获取到第一控制资源集和第一公共搜索空间之后，第二终端设备可以使用第一控制资源集和第一公共搜索空间确定PDCCH的候选资源，在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息，使用该系统信息接入到网络中。本申请实施例中，第一终端设备无法使用第一SSB接入网络，但是第二终端设备可以使用第一SSB接入网络，提高了第二终端设备对网络设备广播的SSB的利用率，降低网络设备广播更多SSB的开销。
举例说明如下，第一类型SSB是Non-CD-SSB，第二类型SSB是CD-SSB。第二终端设备使用第一SSB与网络设备进行同步，并根据第一SSB获取到系统信息块(system  information block，SIB)，第二终端设备可以根据SIB指示的信息向网络设备发起初始接入。对于通过SSB接入网络的详细过程详见前述的内容说明，此处不再赘述。
在本申请的一些实施例中，网络设备除了执行前述的步骤101之外，网络设备执行的同步信号块的传输方法，还可以包括如下步骤：
网络设备向第二终端设备发送第二SSB。
其中，第一SSB为第二终端设备的第一类型SSB，第二SSB用于向第二终端设备指示第二控制资源集和/或第二公共搜索空间。
本申请一些实施例中，网络设备可以广播第一SSB和第二SSB。其中，第一SSB是第二终端设备的第一类型SSB，第二SSB是第二终端设备的第二类型SSB。第一SSB不用于向第二终端设备指示控制资源集和/或公共搜索空间，而第二SSB用于向第二终端设备指示控制资源集和/或公共搜索空间。例如，第二SSB用于向第二终端设备指示第二控制资源集和/或第二公共搜索空间，第二终端设备可以使用该第二SSB确定第二控制资源集和/或第二公共搜索空间。第二终端设备可以使用第二控制资源集和第二公共搜索空间确定PDCCH的候选资源，在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息，使用该系统信息接入到网络中。
需要说明的是，本申请实施例中，第二控制资源集和第二公共搜索空间用于确定公共PDCCH的候选资源位置。其中，公共PDCCH所调度的PDSCH上可以承载小区公共信息，或者承载一组终端设备的公共信息。本申请实施例提供的技术方案中，第二控制资源集和第二公共搜索空间可以被替换为其他名称的参数，该参数用于确定公共PDCCH的候选资源位置。
本申请实施例中，第一控制资源集和第二控制资源集可以相同，也可以不同，本申请实施例不做限制。第一公共搜索空间和第二公共搜索空间可以相同，也可以不同，本申请实施例不做限制。
在本申请的一些实施例中，第二终端设备除了执行前述的步骤102和步骤103之外，第二终端设备执行的同步信号块的传输方法，还可以包括如下步骤：
若第一SSB为第二终端设备的第一类型SSB，第二终端设备从网络设备接收第二SSB，根据第二SSB确定第二控制资源集和/或第二公共搜索空间。
其中，第二终端设备判断该第一SSB是否为第二终端设备的第一类型SSB。该第一SSB对于不同类型的终端设备而言可以是相同类型的SSB，例如第一SSB是第一终端设备的第一类型SSB，且第一SSB是第二终端设备的第一类型SSB。在第一SSB是第一终端设备的第一类型SSB、且第一SSB是第二终端设备的第一类型SSB的情况下，第二终端设备和第一终端设备可以对第一SSB的处理方式相同。例如，第一SSB是第一终端设备的Non-CD-SSB，且第一SSB是第二终端设备的Non-CD-SSB，则第一终端设备无法使用第一SSB接入网络，第一终端设备可以跳转到第一终端设备的CD-SSB(如第二SSB或者第三SSB)，第二终端设备也无法使用第一SSB接入网络，第二终端设备可以跳转到第二SSB。其中，第二SSB和第三SSB可以表示不同的SSB。此时，第二终端设备可以和第一终端设备跳转到相同的SSB，第二终端设备也可以和第一终端设备跳转到不相同的SSB。第二终端设备可以从网络设备接收第二SSB，根据第二SSB确定第二控制资源集和/或第二公共搜 索空间，第二终端设备获取到第二控制资源集和第二公共搜索空间之后，第二终端设备可以使用第二控制资源集和第二公共搜索空间确定PDCCH的候选资源，在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息，使用该系统信息接入到网络中。
在本申请的一些实施例中，本申请实施例提供的SSB中包括第一指示信息，其中，
第一指示信息为第一值时，第一指示信息用于指示该SSB为第二终端设备的第二类型SSB；
第一指示信息为第二值时，第一指示信息用于指示该SSB为第二终端设备的第一类型SSB。其中，例如，该SSB是第一SSB或第二SSB。图2示出了第一SSB的结构示意图，第二SSB的结构可以与此类似，不再逐一说明。
具体的，第一指示信息在SSB中的实现方式有多种，例如第一指示信息可以是SSB中的新增字段，或者第一指示信息可以是SSB中的保留字段，或者第一指示信息可以是SSB中的原有字段。第二终端设备通过解读SSB携带的信息，可以获取到第一指示信息，实现网络设备向第二终端设备指示SSB的SSB类型的目的。以第一SSB为例，例如第一SSB中的原有字段对于第二终端设备是无效字段时，第一SSB中的原有字段可以用于承载第一指示信息。从而，本申请实施例可以在不改变第一SSB的原有结构的情况下，第二终端设备通过对第一SSB的原有字段的重新解读获取到第一指示信息，实现网络设备向第二终端设备指示第一SSB的SSB类型的目的。
具体的，第一指示信息的取值方式有多种，第一指示信息的取值可以是第一值，或者第二值。又如，第一指示信息的取值还可以是第三值，或者第四值等。第一指示信息的不同取值可以指示携带该第一指示信息的SSB为第二终端设备的不同类型SSB。具体的，以第一SSB为例，第一指示信息为第一值时，第一指示信息用于指示第一SSB为第二终端设备的第二类型SSB，例如第一值可以为0。第一指示信息为第二值时，第一指示信息用于指示第一SSB为第二终端设备的第一类型SSB，例如第二值可以为1。本申请实施例中，网络设备可以通过配置第一指示信息的不同取值指示SSB的不同类型，第二终端设备也可以通过从第一指示信息中解析出的不同取值确定该SSB的不同类型，从而第二终端设备可以根据该SSB对应于该第二终端设备的具体SSB类型执行相应的操作。
可选的，在本申请的一些实施例中，第一指示信息通过携带该第一指示信息的SSB中的公共子载波间隔(subCarrierSpacingCommon)字段、解调参考信号类型A位置(dmrs-TypeA-Position)字段、频率内重选(intraFreqReselection)字段、空闲(spare)字段和频率范围(frequency range，FR)1对应的保留字段中的至少一个字段承载。
示例性地，本申请实施例中，公共子载波间隔字段用于指示CORESET#0的子载波间隔，解调参考信号类型A位置字段用于指示解调参考信号在时隙中的位置，频率内重选字段用于当小区处于禁止状态时指示是否在新的频率上搜索小区，空闲字段无指示作用，FR1对应的保留字段用于指示当频谱为FR1时该字段处于保留状态，无指示作用。
具体的，网络设备可以使用SSB中的一个或多个字段承载第一指示信息。例如，网络设备可以使用SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个(或一个或多个)字段承载第一指示信息。例如网络设备可使用SSB中的上述一个字段承载第一指示信息，或者使用 SSB中的上述多个字段承载第一指示信息。本申请实施例中，SSB中承载第一指示信息所使用的具体字段名称以及具体的字段个数不做限定。第二终端设备通过解析SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段，可以得到第一指示信息。
本申请实施例中，SSB所在的频段可以属于不同的频率范围，例如SSB所属的频段可以属于FR1或者FR2，例如FR1对应的频率范围为450MHz-6000MHz，FR2对应的频率范围为24250MHz-52600MHz。FR1对应的保留字段是指SSB所在频段属于FR1时在SSB中是无用的字段，因此可以用于携带第一指示信息。若SSB所在频段属于FR2时，上述FR1中无用的字段被用于指示SSB索引。
在本申请的一些实施例中，第一指示信息为第一值时，第一SSB包括第三指示信息，其中，第三指示信息，用于指示第一控制资源集和/或第一公共搜索空间。
第一指示信息为第一值时，第二终端设备可以使用第一SSB确定如下至少一种：第一控制资源集、第一公共搜索空间。例如第一SSB包括第三指示信息，第三指示信息指示第一控制资源集的信息，第二终端设备可以根据第三指示信息的指示确定第一控制资源集，第二终端设备可以根据协议的预先规定确定第一公共搜索空间。又如，第三指示信息指示第一公共搜索空间的信息，第二终端设备可以根据第三指示信息的指示确定第一公共搜索空间，第二终端设备可以根据协议的预先规定确定第一控制资源集。又如，第三指示信息指示第一控制资源集的信息和第一公共搜索空间的信息，第二终端设备可以根据第三指示信息的指示确定第一控制资源集和第一公共搜索空间。本申请实施例中对于第三指示信息在第一SSB中的位置不做限定。本申请实施例中，第二终端设备获取到第一控制资源集和第一公共搜索空间之后，第二终端设备可以使用第一控制资源集和第一公共搜索空间确定PDCCH的搜索空间，在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息，使用该系统信息接入到网络中。
在本申请的一些实施例中，第三指示信息通过第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
具体的，网络设备可以使用第一SSB中的一个或多个字段承载第三指示信息，不限的是，网络设备可以使用第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载第三指示信息。例如网络设备可使用第一SSB中的上述一个字段承载第三指示信息，或者使用第一SSB中的上述多个字段承载第三指示信息。本申请实施例中第一SSB中承载第三指示信息所使用的具体字段名称以及具体字段的个数不做限定。第二终端设备通过解析第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段，以得到第三指示信息。
例如，网络设备可使用第一SSB中的上述一个字段承载第一指示信息和第三指示信息，或者使用第一SSB中的上述多个字段承载第一指示信息和第三指示信息，第一指示信息和第三指示信息在第一SSB中的位置不做限定。另外，本申请实施例中第一SSB中承载第一指示信息和第三指示信息所使用的具体字段不做限定。
在本申请的一些实施例中，若网络设备广播第一SSB，第二终端设备可以接收该第一SSB。例如第一SSB中携带第一指示信息，第一指示信息包括第二值时，第一指示信息用于指示第一SSB为第二终端设备的第一类型SSB，例如第一指示信息用于指示第一SSB为第二终端设备的Non-CD-SSB。此时，网络设备还需要广播第二SSB。第二SSB可以是第二终端设备的第二类型SSB。例如，第二SSB中可以包括第一指示信息，第一指示信息的值为第一值，用于指示第二SSB是第二终端设备的第二类型SSB，如CD-SSB。在这种实现场景下，如图2所示，第一SSB中还可以包括第二指示信息，第二指示信息用于指示第二SSB的偏移信息。第二SSB的偏移信息是第二终端设备确定第二SSB时需要使用的偏移信息。例如第二SSB的偏移信息可以是第二SSB相对于第一SSB的偏移信息。本申请的上述实施例中，第二终端设备通过从第一SSB中获取到第二SSB的偏移信息，从而第二终端设备可以根据该偏移信息接收网络设备发送的第二SSB。第二终端设备通过第二SSB可以确定公共PDCCH的候选资源，在PDCCH的候选资源中检测DCI、根据DCI获取到系统信息，使用该系统信息接入到网络中。
在本申请的一些实施例中，SSB的频率位置可以通过全局同步信道号(global synchronization channel number，GSCN)来表示。例如，第二SSB的频率偏移信息包括：第二SSB的GSCN相对于第一SSB的GSCN的第一偏移量信息。
一种可能的实现方式中，第二指示信息包括第一比特位和第二比特位，其中，
第二比特位用于指示第二SSB的GSCN相对于第一SSB的GSCN的第一偏移量信息；
第二SSB的GSCN与第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000046
其中，
Figure PCTCN2021109645-appb-000047
为第二SSB的GSCN，
Figure PCTCN2021109645-appb-000048
表示第一SSB的GSCN，
Figure PCTCN2021109645-appb-000049
表示第一偏移量，a为第一比特位指示的值，a的取值为1或-1，n为调节系数，
Figure PCTCN2021109645-appb-000050
表示第二SSB的GSCN相对于第一SSB的GSCN的第一偏移量信息。n为大于或等于0的实数，例如n可以是大于或等于1的整数。
Figure PCTCN2021109645-appb-000051
为大于或等于0的实数，例如n可以是大于或等于1的整数。
一种可能的实现方式中，第二指示信息包括第一比特位和第二比特位，其中，
第二SSB的GSCN与第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000052
其中，
Figure PCTCN2021109645-appb-000053
为第二SSB的GSCN，
Figure PCTCN2021109645-appb-000054
表示第一SSB的GSCN，
Figure PCTCN2021109645-appb-000055
表示第一偏移量，a为第一比特位指示的值，a的取值为1或-1，n为调节系数，
Figure PCTCN2021109645-appb-000056
表示第二比特位指示的值。n为大于或等于0的实数，例如n可以是大于或等于1的整数。
Figure PCTCN2021109645-appb-000057
为大于或等于0的实数，例如n可以是大于或等于1的整数。
具体的，第二终端设备可以从第一SSB包括的第二指示信息中获取到第一比特位和第二比特位，第一比特位和第二比特位在第二指示信息中的比特位置不做限定。其中，第一比特位指示了a的取值，n可以为调节系数。例如n的取值可以是预设的，例如，n为协议预定义的系数。第二比特位指示了第二SSB的GSCN相对于第一SSB的GSCN的第一偏移量信息，类似上述等式，第二终端设备可以获取到第二SSB的GSCN。
不限定的是，基于上述第二SSB的GSCN与第一SSB的GSCN满足的计算方式，还 可以采用其它类似的计算方式，例如在
Figure PCTCN2021109645-appb-000058
等式的右边新增其它的调节项，或者
Figure PCTCN2021109645-appb-000059
等式的右边整体相乘一个调节项，具体可以结合应用场景灵活配置，此处不做限定。
需要说明的是,
Figure PCTCN2021109645-appb-000060
表示第一偏移量,该第一偏移量是根据k SSB和pdcch-ConfigSIB1查表得到的偏移,对于k SSB的说明以及查表的具体方式,详见后续实施例的说明。
可选地，在本申请实施例中，第二指示信息可以包括第三指示字段和第四指示字段。其中,第三指示字段用于指示第一偏移量为正向偏移量，或者第一偏移量为负向偏移量；第四指示字段用于指示第二SSB的GSCN相对于第一SSB的GSCN的第一偏移量信息。其中，第三指示字段和第四指示字段可以是显式指示或隐式指示。第三指示字段和第四指示字段的指示方式可以包括多种形式，例如采用比特位或者信息流的方式。例如，第三指示字段是比特位时，可以称为第一比特位，第四指示字段是比特位时，可以称为第二比特位。
在本申请的一些实施例中，SSB的频率位置可以通过GSCN来表示。例如，第二SSB的偏移信息包括：第二SSB的GSCN相对于第一SSB的GSCN的第二偏移量信息。
一种可能的实现中，第二指示信息包括第一比特位和第二比特位，其中，
第二比特位用于指示第二SSB的GSCN相对于第一SSB的GSCN的第二偏移量信息；
第二SSB的GSCN与第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000061
其中，
Figure PCTCN2021109645-appb-000062
为第二SSB的GSCN，
Figure PCTCN2021109645-appb-000063
表示第一SSB的GSCN，a为第一比特位指示的值，a的取值为1或-1，n为调节系数，
Figure PCTCN2021109645-appb-000064
表示第二SSB的GSCN相对于第一SSB的GSCN的偏移量。n为大于或等于0的实数，例如n可以是大于或等于1的整数。
一种可能的实现方式中，第二指示信息包括第一比特位和第二比特位，其中，
第二SSB的GSCN与第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000065
其中，
Figure PCTCN2021109645-appb-000066
为第二SSB的GSCN，
Figure PCTCN2021109645-appb-000067
表示第一SSB的GSCN，a为第一比特位指示的值，a的取值为1或-1，n为调节系数，
Figure PCTCN2021109645-appb-000068
表示第二比特位指示的值。n为大于或等于0的实数，例如n可以是大于或等于1的整数。
具体的，第二终端设备可以从第一SSB包括的第二指示信息中获取到第一比特位和第二比特位，第一比特位和第二比特位在第二指示信息中的比特位置不做限定。其中，第一比特位指示了a的取值，n可以为调节系数，例如n的取值可以是预设的，例如，n为协议预定义的系数。第二比特位指示了第二SSB的GSCN的偏移量相对于第一SSB的GSCN的偏移量。因此基于上述等式，第二终端设备可以获取到第二SSB的GSCN。
不限定的是，基于上述第二SSB的GSCN与第一SSB的GSCN满足的计算方式，还可以采用其它类似的计算方式，例如在
Figure PCTCN2021109645-appb-000069
等式的右边新增其它的调节项，或者
Figure PCTCN2021109645-appb-000070
等式的右边整体相乘一个调节项，具体可以结合应用场景灵活配置，此处不做限定。
需要说明的是，在本申请实施例中，第二指示信息包括第三指示字段和第四指示字段，第三指示字段用于指示第一偏移量为正向偏移量，或者第一偏移量为负向偏移量；第四指 示字段用于指示第二SSB的GSCN相对于第一SSB的GSCN的偏移量。其中，第三指示字段和第四指示字段可以是显式指示或隐式指示。第三指示字段和第四指示字段的指示方式可以包括多种形式，例如采用比特位或者信息流的方式。例如，第三指示字段是比特位时，可以称为第一比特位，第四指示字段是比特位时，可以称为第二比特位。
在本申请的一些实施例中，SSB的频率位置可以通过GSCN来表示。例如，第二SSB的偏移信息包括：第二SSB的GSCN偏移量。
在一种可能的实现中，第二指示信息包括第一比特位和第二比特位，其中，
第一比特位用于指示第二SSB的GSCN偏移量为正向偏移量，或者第二SSB的GSCN偏移量为负向偏移量；
第二比特位用于指示第二SSB的GSCN偏移量；
第二SSB的频率范围为：
Figure PCTCN2021109645-appb-000071
其中，
Figure PCTCN2021109645-appb-000072
为第一SSB的GSCN，
Figure PCTCN2021109645-appb-000073
为GSCN起始值，b为第一比特位指示的值，b的取值为1或-1，n为调节系数，
Figure PCTCN2021109645-appb-000074
为GSCN结束值，
Figure PCTCN2021109645-appb-000075
表示所述第二SSB的GSCN偏移量。n为大于或等于0的实数，例如n可以是大于或等于1的整数。
具体的，
Figure PCTCN2021109645-appb-000076
为GSCN起始值，
Figure PCTCN2021109645-appb-000077
为GSCN结束值。GSCN起始值和GSCN结束值可以是MIB指示的值，例如MIB中的pdcch-ConfigSIB1字段可用于指示GSCN起始值和GSCN结束值，GSCN起始值可以通过pdcch-ConfigSIB1字段的高4个比特进行指示，GSCN结束值可以通过pdcch-ConfigSIB1字段的低4个比特进行指示。第二终端设备可以从第一SSB包括的第二指示信息中获取到第一比特位和第二比特位，第一比特位和第二比特位在第二指示信息中的比特位置不做限定。其中，第一比特位指示了b的取值，n可以为调节系数，例如n的取值可以是预设的，例如，n为协议预定义的系数。第二比特位指示了第二SSB的GSCN的偏移量。第二SSB的GSCN偏移量可以用于确定出第二SSB的频率范围。
不限定的是，基于上述第二SSB的频率范围的确定方式，还可以采用其它类似的方式，例如在上述第二SSB的频率范围的左侧边界
Figure PCTCN2021109645-appb-000078
的基础上新增其它的调节项，或者在第二SSB的频率范围的右侧边界
Figure PCTCN2021109645-appb-000079
Figure PCTCN2021109645-appb-000080
的基础上新增其它的调节项，具体可以结合应用场景灵活配置，此处不做限定。
需要说明的是，在本申请实施例中，第二指示信息包括第三指示字段和第四指示字段，第三指示字段用于指示第二SSB的GSCN偏移量为正向偏移量，或者第二SSB的GSCN偏移量为负向偏移量；第四指示字段用于指示第二SSB的GSCN偏移量。其中，第三指示字段和第四指示字段可以是显式指示或隐式指示。第三指示字段和第四指示字段的指示方式可以包括多种形式，例如采用比特位或者信息流的方式。例如，第三指示字段是比特位时，可以称为第一比特位，第四指示字段是比特位时，可以称为第二比特位。
可选的，第二指示信息通过携带该第二指示信息的SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段 中的至少一个字段承载。
具体的，网络设备可以使用SSB中的一个或多个字段承载第二指示信息。例如，网络设备可以使用SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个(或，一个或多个)字段承载第二指示信息。例如网络设备可使用SSB中的上述一个字段承载第二指示信息，或者使用第一SSB中的上述多个字段承载第二指示信息。本申请实施例中第一SSB中承载第二指示信息所使用的具体字段名称以及具体的字段个数不做限定。第二终端设备通过解析第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段，可以得到第二指示信息。
本申请实施例还提供一种同步信号块的传输方法，主要包括如下流程：
网络设备向第二终端设备发送第一同步信号块SSB，其中，第一SSB是第一终端设备的第一类型SSB。
若第一SSB是第二终端设备的第一类型SSB，网络设备向第二终端设备发送第二SSB；
其中，第二SSB用于向第二终端设备指示第二控制资源集和/或第二公共搜索空间；
其中，第一SSB包括第一指示信息，第一指示信息的第二值用于指示第一SSB是第二终端设备的第一类型SSB；
其中，第一指示信息通过第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
本申请实施例还提供一种同步信号块的传输方法，主要包括如下流程：
第二终端设备从网络设备接收第一同步信号块SSB，其中，第一SSB是第一终端设备的第一类型SSB；
若第一SSB是第二终端设备的第一类型SSB，第二终端设备从网络设备接收第二SSB，根据第二SSB确定第二控制资源集和/或第二公共搜索空间；
其中，第一SSB包括第一指示信息，第一指示信息的第二值用于指示第一SSB是第二终端设备的第一类型SSB；
其中，第一指示信息通过第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
在上述方案中，网络设备可以使用SSB中的一个或多个字段承载第一指示信息。例如，网络设备可以使用SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个(或一个或多个)字段承载第一指示信息。例如网络设备可使用SSB中的上述一个字段承载第一指示信息，或者使用SSB中的上述多个字段承载第一指示信息。SSB中承载第一指示信息所使用的具体字段名称以及具体的字段个数不做限定。第二终端设备通过解析SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段，可以得到第一指示信息。通过这种方法，可以在不增加信令开销的条件下承载第一指示信息。
详见前述实施例中对第一指示信息、以及第一SSB中的各个字段的说明，此处不再赘述。
为便于更好的理解和实施本申请实施例的上述方案，下面举例相应的应用场景来进行具体说明。
本实施例以网络设备为基站、第二终端设备为REDCAP终端设备(后续简称为REDCAP UE)、第一终端设备为传统终端设备(Legacy终端设备)为例，第一类型SSB具体可以是Non-CD-SSB，第二类型SSB具体可以是CD-SSB。传统终端设备无法通过Non-CD-SSB获得SIB1，无法从该小区接入网络。对于REDCAP终端设备，在一些场景中可以通过传统终端设备对应的Non-CD-SSB接入网络，例如该网络为私有网络或工业网络等。本申请实施例支持REDCAP终端设备通过Legacy终端设备的Non-CD-SSB确定CORESET#0和CSS、根据CORESET#0和CSS确定PDCCH的候选资源，在PDCCH的候选资源中检测DCI，根据DCI获取到REDCAP终端设备的系统信息，使用该系统信息接入网络。
如图3所示，本申请实施例提供一种同步信号块的传输场景，一个SSB对传统终端设备为Non-CD-SSB，REDCAP终端设备可以确定该SSB对REDCAP终端设备的SSB类型，并根据REDCAP终端设备的确定结果执行不同的步骤，具体的，当REDCAP终端设备确定一个SSB为传统终端设备的Non-CD-SSB时，REDCAP终端设备执行的流程包括如下步骤：
步骤S1：REDCAP终端设备确定接收到的SSB是否为传统终端设备的Non-CD-SSB。若该SSB是传统终端设备的Non-CD-SSB，REDCAP终端设备执行步骤S2。
可选地，该场景中还可以包括，传统终端设备确定接收到的SSB是否为Non-CD-SSB。若传统终端设备确定接收到的SSB是Non-CD-SSB，则传统终端设备根据PBCH中的指示信息，跳转到CD-SSB。
步骤S2：REDCAP终端设备确定接收到的SSB，对REDCAP终端设备是否为Non-CD-SSB，若REDCAP终端设备确定接收的SSB是Non-CD-SSB，跳转到步骤S3-1或步骤S3-2，若REDCAP终端设备确定接收的SSB是CD-SSB，跳转到步骤S4。
步骤S3-1：REDCAP终端设备跳转到与传统终端设备相同的CD-SSB上，通过该CD-SSB接入网络。对于通过SSB接入网络的具体过程请参阅前述内容介绍。
步骤S3-2：网络设备指示REDCAP终端设备的CD-SSB，REDCAP终端设备跳转到该CD-SSB，通过该CD-SSB接入网络。对于通过SSB接入网络的具体过程请参阅前述内容介绍。
步骤S4：网络设备指示REDCAP终端设备的CORESET#0和/或CSS，REDCAP终端设备根据指示获取SIB1，完成初始接入流程。
接下来对上述步骤中终端设备确定接收到的SSB是否为传统终端设备的Non-CD-SSB的方式进行说明。
在本申请实施例中，PBCH负载包括
Figure PCTCN2021109645-appb-000081
这A个比特用于承载MIB信息，MIB包括的各字段的含义和比特数如表1所示。
表1
Figure PCTCN2021109645-appb-000082
本申请实施例中，终端设备收到MIB后，依据k SSB判断传统终端设备的CSS是否存在，k SSB通过ssb-SubcarrierOffset字段计算，对于SSB所在的频段可以属于FR1，或者属于FR2，对于FR1和FR2，k SSB可以采用如下不同的计算公式：
SSB所在的频段属于FR1时，
Figure PCTCN2021109645-appb-000083
共5个比特(bits)，取值范围为0至31；
Figure PCTCN2021109645-appb-000084
通过PBCH的负载得到。“|”含义为比特连接，即kssb由5个比特组成，最高位是
Figure PCTCN2021109645-appb-000085
后四位是ssb-SubcarrierOffset。
SSB所在的频段属于FR2时，k SSB＝ssb-SubcarrierOffset，共4个比特，取值范围为0至15。
在本申请实施例中，终端设备根据k SSB判断是否为CD-SSB，以及判断出为Non-CD-SSB后根据MIB中的pdcch-ConfigSIB1字段获得CD-SSB的频点位置的方法，如表2、表3a和表3b所示。其中，表3a用于SSB所在的频段可以属于FR1时计算
Figure PCTCN2021109645-appb-000086
表3b用于SSB所在的频段可以属于FR2时
Figure PCTCN2021109645-appb-000087
表2
Figure PCTCN2021109645-appb-000088
Figure PCTCN2021109645-appb-000089
表3a
Figure PCTCN2021109645-appb-000090
表3b
Figure PCTCN2021109645-appb-000091
其中，controlResourceSetZero表示CORESET#0，searchSpaceZero表示搜索空间0，本申请实施例中也可以表示公共搜索空间CSS。
需要说明的是，在上述表1中，若终端设备接收到的是Non-CD-SSB，则对于终端设备而言，公共子载波间隔(subCarrierSpacingCommon)字段、解调参考信号类型A位置(dmrs-TypeA-Position)字段、频率内重选(intraFreqReselection)字段、空闲(spare)字段和频率范围(frequency range，FR)1对应的保留字段是不需要解读的，或者解读了也没有相应的后续行动。本申请实施例中，可以使用subCarrierSpacingCommon、 dmrs-TypeA-Position、intraFreqReselection、spare来承载前述实施例中的如下至少一个指示信息：第一指示信息、第二指示信息和第三指示信息。
PBCH的负载包括A个比特，分别为
Figure PCTCN2021109645-appb-000092
这A个比特用于承载MIB，除了上述
Figure PCTCN2021109645-appb-000093
PBCH中还用
Figure PCTCN2021109645-appb-000094
共8个比特用于指示以下信息：
Figure PCTCN2021109645-appb-000095
是系统帧号的低4位，MIB中的系统帧号(systemFrameNumber)字段占用6个比特，这10个比特用于指示系统帧号。
Figure PCTCN2021109645-appb-000096
作为半帧指示
Figure PCTCN2021109645-appb-000097
指示SSB位于一个帧的前半帧还是后半帧。
Figure PCTCN2021109645-appb-000098
三个比特，根据SSB所在频段和子载波间隔的不同，按照如下规则进行使用：
在FR1频段的授权频谱上，当SSB的子载波间隔为15kHz时，SSB中的SSB数量最多为4，当SSB的子载波间隔为30kHz时，SSB中的SSB数量最多为8，
Figure PCTCN2021109645-appb-000099
是k SSB的最高位，
Figure PCTCN2021109645-appb-000100
保留。在FR2频段的授权频谱上，SSB中的SSB数量最多为64，
Figure PCTCN2021109645-appb-000101
是指示SSB索引信息的最高三位。
根据以上内容，
Figure PCTCN2021109645-appb-000102
中，根据SSB所在频段的不同，会有0至2个比特的保留字段。例如，SSB所在的频段为FR1频段时，存在保留字段，包括上述
Figure PCTCN2021109645-appb-000103
本申请实施例中，可以利用公共子载波间隔(subCarrierSpacingCommon)字段、解调参考信号类型A位置(dmrs-TypeA-Position)字段、频率内重选(intraFreqReselection)字段、空闲(spare)字段和频率范围(frequency range，FR)1对应的保留字段中的至少一个承载第一指示信息、第二指示信息、第三指示信息的至少一种。
具体的，SSB中包括PBCH，REDCAP终端设备从PBCH中获取MIB，通过MIB的指示确定该SSB是否为传统终端设备的Non-CD-SSB。可以利用PBCH或者MIB中的空余比特，和/或对PBCH或者MIB中部分字段的重解读来实现该指示。
为确保传统终端设备维持目前协议定义的功能和行为不变，PBCH或MIB部分字段的内容不做改动。如下表4，为MIB对传统终端设备和REDCAP终端设备指示的信息。在传统终端设备的Non-CD-SSB中，可以将MIB中的公共子载波间隔(subCarrierSpacingCommon)字段、解调参考信号类型A位置(dmrs-TypeA-Position)字段、频率内重选(intraFreqReselection)字段、空闲(spare)字段和频率范围(frequency range，FR)1对应的保留字段,用于上述步骤中网络设备发送给REDCAP终端设备的指示信息。
表4
Figure PCTCN2021109645-appb-000104
Figure PCTCN2021109645-appb-000105
需要说明的是，上述表4中的“无用”是指协议里该字段是无用的，“无指示意义”是指某些场景中该字段没有指示意义，例如当MIB指示该SSB为Non-CD-SSB时，MIB中的subCarrierSpacingCommon是没有意义的，因为该字段是用于指示传统终端设备的SIB所在信道的子载波间隔的，而该SSB没有对应的SIB。
对于第一指示信息、第二指示信息、第三指示信息的说明，详见前述实施例，此处不再赘述。
如表4所示，若SSB所在的频段属于FR1，则上述表4中的公共子载波间隔(subCarrierSpacingCommon)字段、解调参考信号类型A位置(dmrs-TypeA-Position)字段、频率内重选(intraFreqReselection)字段、空闲(spare)字段和频率范围(frequency range， FR)1对应的保留字段共占用6个比特，若SSB所在的频段属于FR2，则上述表4中的公共子载波间隔(subCarrierSpacingCommon)字段、解调参考信号类型A位置(dmrs-TypeA-Position)字段、频率内重选(intraFreqReselection)字段、空闲(spare)字段和频率范围(frequency range，FR)1对应的保留字段共占用4个比特。这些比特可以按照以下规则使用：
在上述6个比特或4个比特中，使用1个比特记为B1，B1指示SSB对REDCAP终端设备是否为Non-CD-SSB(用于上述步骤S2中的判断)，例如B1＝1时表示该SSB对REDCAP终端设备为Non-CD-SSB，B1＝0时表示该SSB对REDCAP终端设备是CD-SSB。
6个比特中除了B1之外，还剩余5个比特，4个比特中除了B1之外，还剩余3个比特，则5个比特或3个比特记为B2，则B2可以表示以下两个含义：
若B1＝1，即该SSB对REDCAP终端设备为Non-CD-SSB时，B2指示一个相对于传统终端设备的新SSB频点的偏移(offset)值。用于REDCAP终端设备跳转REDCAP终端设备的CD-SSB上。
若B1＝0，即该SSB对REDCAP终端设备为CD-SSB时，B2用于指示CORESET#0和/或CSS，使REDCAP终端设备在所指示的时频范围内搜索系统信息无线网络临时标识(system information-radio network temporary indicator，SI-RNTI)加扰的DCI，搜索到DCI后，根据DCI的指示获得SIB1等。
本申请实施例中，利用B2比特指示REDCAP终端设备的CD-SSB的频率信息。例如B2比特表示一个GSCN的偏移量，B2可以是前述的第一比特位和第二比特位。
本申请实施例中，利用B2比特实现向REDCAP终端设备指示CORESET#0和/或CSS，可以是如下方法中的任意一种：
方法一：CORESET#0为协议预定义的值，B2比特用于指示CSS。
方法二：CSS为协议预定义的值，B2比特用于指示CORESET#0。
方法三：B2＝B21+B22，B2比特中的B21比特指示CORESET#0，B22比特指示CSS，B21和B22为大于等于零的整数。
上述三种方法中，指示CORESET#0和/或CSS可以通过查表的方法实现。方法一和方法二可以作为方法三的特例，为统一描述，以下用X比特表示用于指示CORESET#0的比特数，用Y比特表示用于指示CSS的比特数，则X+Y＝B2，X和Y为大于等于零的整数。
以下介绍查表的方法确定CORESET#0和CSS。例如使用表5确定CORESET#0，使用表6确定CSS。
表5
Figure PCTCN2021109645-appb-000106
Figure PCTCN2021109645-appb-000107
本申请实施例中，可以定义一个如表5所示的表格，用X比特指示出前2 X行中的一行。例如2个比特指示出前4行中的一行，以指示出SSB与CORESET#0的时频复用方式、CORESET#0占用的资源块个数
Figure PCTCN2021109645-appb-000108
(Number of RBs)、CORESET#0占用的符号数
Figure PCTCN2021109645-appb-000109
(Number of Symbols)，以及SSB与CORESET#0之间的频域偏移量(Offset)。例如，SSB与CORESET#0之间的频域偏移量为SSB和CORESET#0二者最低频率点的资源块(resource block，RB)偏移量，由此确定出CORESET#0的频率资源位置。例如，网络设备指示的是表5中的第二行(index＝1)，则SSB和CORESET#0的复用样式为如表5中的第二列所示的样式1，CORESET#0占用的RB资源数为24RB，CORESET#0占用的符号数为2，SSB与CORESET#0的频域偏移量为2RB，则指示的CORESET#0频域位置和长度如图4所示。此外，不同类型的终端设备，可以使用表5所示表格中的不同的2 X行指示CORESET#0参数，例如第二终端设备获得的CORESET#0参数是用前2 X行中的一行指示的，第一终端设备获得的CORESET#0参数是用后2 X行中的另一行指示的。
此外，终端设备还可以利用如下表6所示的表格确定CSS。
表6
Figure PCTCN2021109645-appb-000110
Figure PCTCN2021109645-appb-000111
同样地，本申请实施例中，可以在协议定义一个如表6所示的表格，用Y比特指示出前2 Y行中的一行。例如3个比特指示出前8行中的一行。该行的信息可以指示出每个时隙中的搜索空间数量(number of search space sets per slot)、以及指示出参数O和M，使终端设备可以根据
Figure PCTCN2021109645-appb-000112
计算出n 0，进而可以得到CSS在SSB所在帧中的起始时隙，为第n 0+1个时隙；协议规定CSS占据连续两个时隙，即占据第n 0+1个时隙和第n 0+2个时隙。其中，i表示SSB的Index，μ是指示子载波间隔的参数，当μ＝0时，子载波间隔为15kHz，当μ＝1时，子载波间隔为30kHz，以此类推。此外，不同类型的终端设备，可以使用表6所示表格中的不同的2 Y行指示CSS参数，例如第二终端设备获得的CSS参数是用前2 Y行中的一行指示的，第一终端设备获得的CSS参数是用后2 Y行中的另一行指示的。
如上述表6所示，还指示出搜索空间在时隙中的第一个符号位置(first symbol index)，由此确定CSS，如图5所示。例如，网络设备指示的是表6中第三行(index＝2)，则对于 SSBindex＝1(i＝1)，SCS＝15kHz(μ＝0)，计算出n 0＝(2*2 0+1*1)＝3，即CSS从SSB所在帧的第4开始，占据连续两个时隙，在这两个帧的每帧中，以第1个符号为CORESET#0的起始符号，在CORESET#0确定的频率范围和符号范围内，搜索PDCCH，即搜索SI-RNTI加扰的DCI。
不限定的是，本申请实施例中，还可以同时使用表5和表6，以确定网络设备向REDCAP终端设备指示的CORESET#0和/或CSS。
目前的终端设备无法使用Non-CD-SSB获得SIB1。本申请实施例中REDCAP终端设备通过传统终端设备的Non-CD-SSB接入网络，以及REDCAP终端设备跳转到与传统终端设备不同的CD-SSB。通过确定出Non-CD-SSB的PBCH或MIB中对传统终端设备没有指示意义的信息比特，利用这些比特指示REDCAP终端设备是否要跳转，以及指示跳转的新SSB的GSCN或不跳转时的CORESET#0和CSS，达到不影响传统终端设备的行为，且支持REDCAP终端设备通过Non-CD-SSB接入网络的技术效果。
本申请提供的实施例中，分别从网络设备、终端设备、以及网络设备和终端设备之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，网络设备和终端设备可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和配置约束条件。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请实施例并不受所描述的动作顺序的限制，因为依据本申请实施例，某些步骤可以采用其他顺序或同时进行。
为便于更好的实施本申请实施例的上述方案，下面还提供用于实施上述方案的相关装置。
请参阅图6所示，本申请实施例提供的一种通信装置。通信装置可以是终端设备，也可以是终端设备中的装置，或是能够和终端设备匹配使用的装置。图6以通信装置是终端设备600为例示出，例如该终端设备600可以是前述的第二终端设备。终端设备600可以包括：收发模块601和处理模块602。
一种可能的实现中：
收发模块，用于从网络设备接收第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
处理模块，用于若所述第一SSB是第二终端设备的第二类型SSB，根据所述第一SSB确定第一控制资源集和/或第一公共搜索空间。
一种可能的实现中：收发模块，用于若所述第一SSB是所述第二终端设备的第一类型SSB，从所述网络设备接收第二SSB，所述处理模块用于根据所述第二SSB确定第二控制资源集和/或第二公共搜索空间。
一种可能的实现中：所述第一SSB包括第一指示信息，其中，
所述第一指示信息为第一值时，所述第一指示信息用于指示所述第一SSB是所述第二终端设备的第二类型SSB；
所述第一指示信息为第二值时，所述第一指示信息用于指示所述第一SSB是所述第二终端设备的第一类型SSB。
一种可能的实现中：所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
一种可能的实现中：所述第一SSB还包括第二指示信息，其中，
所述第二指示信息用于指示第二SSB的偏移信息。
一种可能的实现中：所述第二SSB的偏移信息包括：所述第二SSB的全局同步信道号GSCN相对于所述第一SSB的GSCN的第一偏移量信息；
所述第二指示信息包括第一比特位和第二比特位，其中，
所述第二比特位用于指示所述第二SSB的GSCN相对于所述第一SSB的第一偏移量信息；
所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000113
其中，所述
Figure PCTCN2021109645-appb-000114
为所述第二SSB的GSCN，所述
Figure PCTCN2021109645-appb-000115
表示所述第一SSB的GSCN，所述
Figure PCTCN2021109645-appb-000116
表示第一偏移量，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000117
表示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第一偏移量信息。
一种可能的实现中：所述第二SSB的偏移信息包括：所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息；
所述第二指示信息包括第一比特位和第二比特位，其中，
所述第二比特位用于指示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息；
所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000118
其中，所述
Figure PCTCN2021109645-appb-000119
为所述第二SSB的GSCN，所述
Figure PCTCN2021109645-appb-000120
表示所述第一SSB的GSCN，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000121
表示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息。
一种可能的实现中：所述第二SSB的偏移信息包括：所述第二SSB的GSCN偏移量；
所述第二指示信息包括第一比特位和第二比特位，其中，
所述第一比特位用于指示所述第二SSB的GSCN偏移量为正向偏移量，或者所述第二SSB的GSCN偏移量为负向偏移量；
所述第二比特位用于指示所述第二SSB的GSCN偏移量；
所述第二SSB的频率范围为：
Figure PCTCN2021109645-appb-000122
其中，所述
Figure PCTCN2021109645-appb-000123
为所述第一SSB的GSCN，所述
Figure PCTCN2021109645-appb-000124
为GSCN起始值，所述b为所述第一比特位指示的值，b的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000125
为GSCN结束值，所述
Figure PCTCN2021109645-appb-000126
表示所述第二SSB的GSCN偏移量。
一种可能的实现中：所述第二指示信息通过所述第一SSB中的公共子载波间隔字段、 解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
一种可能的实现中：所述第一SSB包括第三指示信息，其中，
所述第三指示信息，用于指示所述第一控制资源集和/或所述第一公共搜索空间。
一种可能的实现中：所述第三指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
一种可能的实现中：
处理模块，用于通过收发模块从网络设备接收第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
处理模块，若所述第一SSB是所述第二终端设备的第一类型SSB，用于通过收发模块从所述网络设备接收第二SSB，根据所述第二SSB确定第二控制资源集和/或第二公共搜索空间；
其中，所述第一SSB包括第一指示信息，所述第一指示信息的第二值用于指示所述第一SSB是所述第二终端设备的第一类型SSB；
其中，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
请参阅图7所示，本申请实施例提供的一种通信装置。通信装置可以是网络设备，也可以是网络设备中的装置，或是能够和网络设备匹配使用的装置。图7以通信装置是网络设备700为例示出。网络设备700可以包括：收发模块701和处理模块702。
一种可能的实现中：
处理模块，用于通过收发模块向第二终端设备发送第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
其中，若所述第一SSB是第二终端设备的第二类型SSB，所述第一SSB用于向所述第二终端设备指示第一控制资源集和/或第一公共搜索空间。
一种可能的实现中：收发模块，用于向所述第二终端设备发送第二SSB；
其中，若所述第一SSB是所述第二终端设备的第一类型SSB，所述第二SSB用于向所述第二终端设备指示第二控制资源集和/或第二公共搜索空间。
一种可能的实现中：所述第一SSB包括第一指示信息，其中，
所述第一指示信息为第一值时，所述第一指示信息用于指示所述第一SSB是所述第二终端设备的第二类型SSB；
所述第一指示信息为第二值时，所述第一指示信息用于指示所述第一SSB是所述第二终端设备的第一类型SSB。
一种可能的实现中：所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
一种可能的实现中：所述第一SSB还包括第二指示信息，其中，
所述第二指示信息用于指示第二SSB的偏移信息。
一种可能的实现中：所述第二SSB的偏移信息包括：所述第二SSB的全局同步信道号GSCN相对于所述第一SSB的GSCN的第一偏移量信息；
所述第二指示信息包括第一比特位和第二比特位，其中，
所述第二比特位用于指示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第一偏移量信息；
所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000127
其中，所述
Figure PCTCN2021109645-appb-000128
为所述第二SSB的GSCN，所述
Figure PCTCN2021109645-appb-000129
表示所述第一SSB的GSCN，所述
Figure PCTCN2021109645-appb-000130
表示第一偏移量，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000131
表示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第一偏移量信息。
一种可能的实现中：所述第二SSB的偏移信息包括：所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息；
所述第二指示信息包括第一比特位和第二比特位，其中，
所述第二比特位用于指示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息；
所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
Figure PCTCN2021109645-appb-000132
其中，所述
Figure PCTCN2021109645-appb-000133
为所述第二SSB的GSCN，所述
Figure PCTCN2021109645-appb-000134
表示所述第一SSB的GSCN，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000135
表示所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息。
一种可能的实现中：所述第二SSB的偏移信息包括：所述第二SSB的GSCN偏移量；
所述第二指示信息包括第一比特位和第二比特位，其中，
所述第一比特位用于指示所述第二SSB的GSCN偏移量为正向偏移量，或者所述第二SSB的GSCN偏移量为负向偏移量；
所述第二比特位用于指示所述第二SSB的GSCN偏移量；
所述第二SSB的频率范围为：
Figure PCTCN2021109645-appb-000136
其中，所述
Figure PCTCN2021109645-appb-000137
为所述第一SSB的GSCN，所述
Figure PCTCN2021109645-appb-000138
为GSCN起始值，所述b为所述第一比特位指示的值，b的取值为1或-1，所述n为调节系数，所述
Figure PCTCN2021109645-appb-000139
为GSCN结束值，所述
Figure PCTCN2021109645-appb-000140
表示所述第二SSB的GSCN偏移量。
一种可能的实现中：所述第二指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
一种可能的实现中：所述第一SSB包括第三指示信息，其中，所述第三指示信息，用于指示所述第一控制资源集和/或所述第一公共搜索空间。
一种可能的实现中：所述第三指示信息通过所述第一SSB中的公共子载波间隔字段、 解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
一种可能的实现中：
处理模块，用于通过收发模块向第二终端设备发送第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
处理模块，用于通过收发模块向所述第二终端设备发送第二SSB；
其中，所述第二SSB用于向所述第二终端设备指示第二控制资源集和/或第二公共搜索空间；
其中，所述第一SSB包括第一指示信息，所述第一指示信息的第二值用于指示所述第一SSB是所述第二终端设备的第一类型SSB；
其中，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
如图8所示为本申请实施例提供的装置800，用于实现上述方法中第二终端设备的功能。该装置可以是第二终端设备，也可以是第二终端设备中的装置，或者能够和第二终端设备匹配使用的装置。其中，该装置可以为芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。装置800包括至少一个处理器820，用于实现本申请实施例提供的方法中第二终端设备的功能。示例性地，处理器820可以接收下行控制信息、控制资源集的配置信息等等信息，并解析上述信息，具体参见方法示例中的详细描述，此处不做赘述。
装置800还可以包括至少一个存储器830，用于存储程序指令和/或数据。存储器830和处理器820耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器820可能和存储器830协同操作。处理器820可能执行存储器830中存储的程序指令。所述至少一个存储器中的至少一个可以包括于处理器中装置800还可以包括通信接口，该通信接口有多种实现方式，例如通信接口可以是收发器、接口、总线、电路、管脚或者能够实现收发功能的装置，图8中以通信接口为收发器810进行示例说明，收发器810用于通过传输介质和其它设备进行通信，从而用于装置800中的装置可以和其它设备进行通信。示例性地，该其它设备可以是网络设备。处理器820利用收发器810收发数据，并用于实现图1对应的实施例中所述的第二终端设备所执行的方法。
本申请实施例中不限定上述收发器810、处理器820以及存储器830之间的具体连接介质。本申请实施例在图8中以存储器830、处理器820以及收发器810之间通过总线840连接，总线在图8中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图8中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
如图9所示为本申请实施例提供的装置900，用于实现上述方法中网络设备的功能。该装置可以是网络设备，也可以是网络设备中的装置，或者能够和网络设备匹配使用的装置。其中，该装置可以为芯片系统。装置900包括至少一个处理器920，用于实现本申请 实施例提供的方法中网络设备的功能。示例性地，处理器920可以生成和发送下行控制信息、控制资源集的配置信息等等信息，具体参见方法示例中的详细描述，此处不做赘述。
装置900还可以包括至少一个存储器930，用于存储程序指令和/或数据。存储器930和处理器920耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器920可能和存储器930协同操作。处理器920可能执行存储器930中存储的程序指令。所述至少一个存储器中的至少一个可以包括于处理器中装置900还可以包括通信接口，该通信接口有多种实现方式，例如通信接口可以是收发器、接口、总线、电路或者能够实现收发功能的装置，图9中以通信接口为收发器99进行示例说明，收发器99用于通过传输介质和其它设备进行通信，从而用于装置900中的装置可以和其它设备进行通信。示例性地，该其它设备可以是终端设备。处理器920利用收发器910收发数据，并用于实现图1对应的实施例中所述的网络设备所执行的方法。
本申请实施例中不限定上述收发器910、处理器920以及存储器930之间的具体连接介质。本申请实施例在图9中以存储器930、处理器920以及收发器910之间通过总线940连接，总线在图9中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图9中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
在本申请实施例中，存储器可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置，用于存储程序指令和/或数据。
本申请实施例提供的技术方案可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、终端设备或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用 介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，DVD))、或者半导体介质等。
在本申请实施例中，在无逻辑矛盾的前提下，各实施例之间可以相互引用，例如方法实施例之间的方法和/或术语可以相互引用，例如装置实施例之间的功能和/或术语可以相互引用，例如装置实施例和方法实施例之间的功能和/或术语可以相互引用。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (27)

  1. 一种同步信号块的传输方法，其特征在于，包括：
    从网络设备接收第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
    若所述第一SSB是第二终端设备的第二类型SSB，根据所述第一SSB确定第一控制资源集和/或第一公共搜索空间。
  2. 根据权利要求1所述的方法，其特征在于，所述第一SSB包括第一指示信息，所述第一指示信息的第一值用于指示所述第一SSB是所述第二终端设备的第二类型SSB。
  3. 根据权利要求2所述的方法，其特征在于，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述根据所述第一SSB确定第一控制资源集和/或第一公共搜索空间，包括：
    通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段确定所述第一控制资源集和/或第一公共搜索空间。
  5. 一种同步信号块的传输方法，其特征在于，包括：
    从网络设备接收第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
    若所述第一SSB是所述第二终端设备的第一类型SSB，从所述网络设备接收第二SSB，根据所述第二SSB确定第二控制资源集和/或第二公共搜索空间；
    其中，所述第一SSB包括第一指示信息，所述第一指示信息的第二值用于指示所述第一SSB是所述第二终端设备的第一类型SSB；
    其中，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
  6. 根据权利要求5所述的方法，其特征在于，所述第一SSB还包括第二指示信息，其中，
    所述第二指示信息用于指示第二SSB的偏移信息。
  7. 根据权利要求6所述的方法，其特征在于，所述第二SSB的偏移信息包括：所述第二SSB的全局同步信道号GSCN相对于所述第一SSB的GSCN的第一偏移量信息；
    所述第二指示信息包括第一比特位和第二比特位，其中，
    所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
    Figure PCTCN2021109645-appb-100001
    其中，所述
    Figure PCTCN2021109645-appb-100002
    为所述第二SSB的GSCN，所述
    Figure PCTCN2021109645-appb-100003
    表示所述第一SSB的GSCN，所述
    Figure PCTCN2021109645-appb-100004
    表示第一偏移量，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
    Figure PCTCN2021109645-appb-100005
    为所述第二比特位指示的值。
  8. 根据权利要求6所述的方法，其特征在于，所述第二SSB的偏移信息包括：所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息；
    所述第二指示信息包括第一比特位和第二比特位，其中，
    所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
    Figure PCTCN2021109645-appb-100006
    其中，所述
    Figure PCTCN2021109645-appb-100007
    为所述第二SSB的GSCN，所述
    Figure PCTCN2021109645-appb-100008
    表示所述第一SSB的GSCN，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
    Figure PCTCN2021109645-appb-100009
    为所述第二比特位指示的值。
  9. 根据权利要求6所述的方法，其特征在于，所述第二SSB的偏移信息包括：所述第二SSB的GSCN偏移量；
    所述第二指示信息包括第一比特位和第二比特位，其中，
    所述第二SSB的频率范围为：
    Figure PCTCN2021109645-appb-100010
    其中，所述
    Figure PCTCN2021109645-appb-100011
    为所述第一SSB的GSCN，所述
    Figure PCTCN2021109645-appb-100012
    为GSCN起始值，所述b为所述第一比特位指示的值，b的取值为1或-1，所述n为调节系数，所述
    Figure PCTCN2021109645-appb-100013
    为GSCN结束值，所述
    Figure PCTCN2021109645-appb-100014
    为所述第二比特位指示的值。
  10. 根据权利要求6至9中任一项所述的方法，其特征在于，所述第二指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
  11. 一种同步信号块的传输方法，其特征在于，包括：
    向第二终端设备发送第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
    其中，若所述第一SSB是第二终端设备的第二类型SSB，所述第一SSB用于向所述第二终端设备指示第一控制资源集和/或第一公共搜索空间。
  12. 根据权利要求11所述的方法，其特征在于，所述第一SSB包括第一指示信息，所述第一指示信息的第一值用于指示所述第一SSB是所述第二终端设备的第二类型SSB。
  13. 根据权利要求12所述的方法，其特征在于，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
  14. 根据权利要求11至13中任一项所述的方法，其特征在于，所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段用于指示所述第一控制资源集和/或第一公共搜索空间。
  15. 一种同步信号块的传输方法，其特征在于，包括：
    向第二终端设备发送第一同步信号块SSB，其中，所述第一SSB是第一终端设备的第一类型SSB；
    若所述第一SSB是所述第二终端设备的第一类型SSB，向所述第二终端设备发送第二SSB；
    其中，所述第二SSB用于向所述第二终端设备指示第二控制资源集和/或第二公共搜索空间；
    其中，所述第一SSB包括第一指示信息，所述第一指示信息的第二值用于指示所述第 一SSB是所述第二终端设备的第一类型SSB；
    其中，所述第一指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
  16. 根据权利要求15所述的方法，其特征在于，所述第一SSB还包括第二指示信息，其中，
    所述第二指示信息用于指示第二SSB的偏移信息。
  17. 根据权利要求16所述的方法，其特征在于，所述第二SSB的偏移信息包括：所述第二SSB的全局同步信道号GSCN相对于所述第一SSB的GSCN的第一偏移量信息；
    所述第二指示信息包括第一比特位和第二比特位，其中，
    所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
    Figure PCTCN2021109645-appb-100015
    其中，所述
    Figure PCTCN2021109645-appb-100016
    为所述第二SSB的GSCN，所述
    Figure PCTCN2021109645-appb-100017
    表示所述第一SSB的GSCN，所述
    Figure PCTCN2021109645-appb-100018
    表示所述第一偏移量，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
    Figure PCTCN2021109645-appb-100019
    为所述第二比特位指示的值。
  18. 根据权利要求16所述的方法，其特征在于，所述第二SSB的偏移信息包括：所述第二SSB的GSCN相对于所述第一SSB的GSCN的第二偏移量信息；
    所述第二指示信息包括第一比特位和第二比特位，其中，
    所述第二SSB的GSCN与所述第一SSB的GSCN满足如下关系：
    Figure PCTCN2021109645-appb-100020
    其中，所述
    Figure PCTCN2021109645-appb-100021
    为所述第二SSB的GSCN，所述
    Figure PCTCN2021109645-appb-100022
    表示所述第一SSB的GSCN，所述a为所述第一比特位指示的值，a的取值为1或-1，所述n为调节系数，所述
    Figure PCTCN2021109645-appb-100023
    为所述第二比特位指示的值。
  19. 根据权利要求16所述的方法，其特征在于，所述第二SSB的偏移信息包括：所述第二SSB的GSCN偏移量；
    所述第二指示信息包括第一比特位和第二比特位，其中，
    所述第二SSB的频率范围为：
    Figure PCTCN2021109645-appb-100024
    其中，所述
    Figure PCTCN2021109645-appb-100025
    为所述第一SSB的GSCN，所述
    Figure PCTCN2021109645-appb-100026
    为GSCN起始值，所述b为所述第一比特位指示的值，b的取值为1或-1，所述n为调节系数，所述
    Figure PCTCN2021109645-appb-100027
    为GSCN结束值，所述
    Figure PCTCN2021109645-appb-100028
    为所述第二比特位指示的值。
  20. 根据权利要求16至19中任一项所述的方法，其特征在于，所述第二指示信息通过所述第一SSB中的公共子载波间隔字段、解调参考信号类型A位置字段、频率内重选字段、空闲字段和频率范围FR1对应的保留字段中的至少一个字段承载。
  21. 一种通信装置，其特征在于，用于实现如权利要求1至10中任一项所述的方法。
  22. 一种通信装置，包括处理器和存储器，所述存储器和所述处理器耦合，所述处理器用于执行权利要求1至10任一项所述的方法。
  23. 一种通信装置，其特征在于，用于实现如权利要求11至20中任一项所述的方法。
  24. 一种通信装置，包括处理器和存储器，所述存储器和所述处理器耦合，所述处理器 用于执行权利要求11至20任一项所述的方法。
  25. 一种通信系统，其特征在于，包括权利要求21或22所述的通信装置，和权利要求23或24所述的通信装置。
  26. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有指令，当所述指令在计算机上运行时，使得计算机执行权利要求1至20任一项所述的方法。
  27. 一种计算机程序产品，包括指令，当所述指令在计算机上运行时，使得计算机执行权利要求1至20任一项所述的方法。
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