WO2020147603A1 - 通信方法、装置及设备 - Google Patents

通信方法、装置及设备 Download PDF

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Publication number
WO2020147603A1
WO2020147603A1 PCT/CN2020/070474 CN2020070474W WO2020147603A1 WO 2020147603 A1 WO2020147603 A1 WO 2020147603A1 CN 2020070474 W CN2020070474 W CN 2020070474W WO 2020147603 A1 WO2020147603 A1 WO 2020147603A1
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WIPO (PCT)
Prior art keywords
synchronization signal
signal block
block
primary
time domain
Prior art date
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PCT/CN2020/070474
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English (en)
French (fr)
Inventor
郑娟
李超君
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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 EP20741153.9A priority Critical patent/EP3905729A4/en
Publication of WO2020147603A1 publication Critical patent/WO2020147603A1/zh
Priority to US17/378,217 priority patent/US20210360558A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • H04L27/2655Synchronisation arrangements
    • H04L27/2662Symbol synchronisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • H04W56/0015Synchronization between nodes one node acting as a reference for the others
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/26025Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method, device and equipment.
  • a terminal device can obtain configuration information of an access network device, and access the access network device according to the configuration information.
  • an access network device periodically sends a synchronization signal block (Synchronization Signal Block, SSB).
  • the synchronization signal block includes a primary synchronization signal, a secondary synchronization signal, and a broadcast message
  • the broadcast message includes the configuration of the access network device. information.
  • the terminal equipment can synchronize with the access network equipment through the primary synchronization signal and the secondary synchronization signal, and access the access network equipment according to the configuration information in the broadcast message.
  • the frequency bandwidth occupied by the broadcast message in the synchronization signal block is usually large, and the frequency bandwidth of the narrowband terminal is usually limited, so that the narrowband terminal cannot receive the broadcast message sent by the access network device, and the narrowband terminal cannot obtain the access network device's information.
  • the configuration information prevents the narrowband terminal device from communicating with the access network device.
  • This application provides a communication method, device, and equipment, which improve the reliability of communication between terminal equipment and access network equipment.
  • An embodiment of the present application provides a communication method, the method includes: a terminal device receives a second synchronization signal block sent by an access network device; the terminal device obtains a broadcast message according to the second synchronization signal block; wherein, in the first synchronization signal block The frequency bandwidth of the broadcast message is greater than the frequency bandwidth of the broadcast message in the second synchronization signal block, and the first synchronization signal block corresponds to the access network device.
  • the first synchronization signal corresponding to the access network device may mean that the first synchronization signal is sent by the access network device.
  • the narrowband terminal can receive the broadcast message in the second synchronization signal block and perform The broadcast message in the second synchronization signal block obtains the configuration information of the access network device.
  • the broadband terminal can receive the broadcast message in the first synchronization signal block or the broadcast message in the second synchronization signal block, so that the broadband terminal can The broadcast message in the first synchronization signal block or the second synchronization signal block obtains the configuration information of the access network device.
  • both the broadband terminal and the narrowband terminal can obtain the broadcast message sent by the access network device, thereby enabling the broadband terminal
  • Both the broadband terminal and the narrowband terminal can obtain the configuration information of the access network device, so that both the broadband terminal and the narrowband terminal can perform reliable data transmission with the access network device, which improves the reliability of data transmission.
  • the first synchronization signal block further includes a primary synchronization signal and an auxiliary synchronization signal; and the second synchronization signal block further includes at least one of a primary synchronization signal or an auxiliary synchronization signal.
  • the terminal device can detect the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block or the second synchronization signal block.
  • the auxiliary synchronization signal enables the terminal equipment to quickly detect the main synchronization signal and the auxiliary synchronization signal.
  • the second synchronization signal block includes a primary synchronization signal and a secondary synchronization signal
  • the frequency bandwidth of the primary synchronization signal included in the second synchronization signal is the same as the frequency of the primary synchronization signal included in the first synchronization signal block.
  • the bandwidth is the same
  • the frequency bandwidth of the secondary synchronization signal included in the second synchronization signal is the same as the frequency bandwidth of the secondary synchronization signal included in the first synchronization signal block.
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block is the first time domain resource interval; the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block are The time domain resource interval of the synchronization signal is the second time domain resource interval, where the first time domain resource interval and the second time domain resource interval are different.
  • the terminal device can determine the difference between the primary synchronization signal and the secondary synchronization signal.
  • the time domain resource interval determines the type of synchronization signal block (first synchronization signal block or second synchronization signal block) to which the synchronization signal (primary synchronization signal and secondary synchronization signal) belongs, thereby avoiding unnecessary terminal equipment detection of broadcast messages Power consumption and reduce the complexity of terminal equipment detection.
  • the first synchronization signal block and the second synchronization signal block satisfy at least one of the following:
  • the second synchronization signal block includes a main synchronization signal, and the main synchronization signal included in the second synchronization signal block is the same as the sequence of the main synchronization signal included in the first synchronization signal block.
  • the sequence detection complexity is reduced, and the standard design complexity can also be reduced.
  • the second synchronization signal block includes a secondary synchronization signal, and the secondary synchronization signal included in the second synchronization signal block is the same as the sequence of the secondary synchronization signal included in the first synchronization signal block.
  • the sequence detection complexity is reduced, and the standard design complexity can also be reduced.
  • the second synchronization signal block includes a main synchronization signal, and the sequence corresponding to the main synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the main synchronization signal included in the second synchronization signal block.
  • the terminal equipment can determine the type of synchronization signal block (first synchronization signal block or second synchronization signal block) to which the primary synchronization signal belongs based on the detected primary synchronization signal, thereby avoiding unnecessary use of the terminal equipment when detecting broadcast messages. Power consumption and reduce the complexity of terminal equipment detection.
  • the second synchronization signal block includes an auxiliary synchronization signal, and the sequence corresponding to the auxiliary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the auxiliary synchronization signal included in the second synchronization signal block.
  • the terminal equipment can determine the type of synchronization signal block (first synchronization signal block or second synchronization signal block) to which the primary synchronization signal belongs based on the detected primary synchronization signal, thereby avoiding unnecessary use of the terminal equipment when detecting broadcast messages. Power consumption and reduce the complexity of terminal equipment detection.
  • the first synchronization signal block is associated with at least one second synchronization signal block, and the at least one second synchronization signal block includes the second synchronization signal block.
  • the terminal device can determine the time domain position of the second synchronization signal block according to the detected first synchronization signal block. For example, for a narrowband terminal, after detecting the synchronization signal (primary synchronization signal and/or secondary synchronization signal) in the first synchronization signal block, the second synchronization signal block can be quickly determined according to the time domain position of the first synchronization signal block , And detect the broadcast message in the second synchronization signal block, and obtain the configuration parameters of the access network device according to the broadcast message in the second synchronization signal block.
  • the synchronization signal primary synchronization signal and/or secondary synchronization signal
  • the time domain resource interval between the first synchronization signal block and the at least one second synchronization signal block is a predefined or preconfigured time domain resource interval.
  • the terminal device since the time domain resource interval between the first synchronization signal block and the at least one second synchronization signal block is a predefined or preconfigured time domain resource interval, the terminal device, after detecting the first synchronization signal block, The time domain resource position of the second synchronization signal block may be determined according to the time domain position of the first synchronization signal block and a predefined or preconfigured time domain resource interval.
  • the number of second synchronization signal blocks associated with each first synchronization signal block is the same.
  • the second synchronization signal block only includes broadcast messages, and the terminal equipment that accesses the access network device through the second synchronization signal block needs to obtain synchronization information through the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block.
  • the number of second synchronization signal blocks associated with each first synchronization signal block is different, the above terminal device also needs to make assumptions about the number of second synchronization signal blocks associated with the first synchronization signal block , And use this for combined detection, which will increase the complexity of terminal equipment accessing the system.
  • the terminal device determines the number of second synchronization signal blocks that can be combined and detected, thereby reducing the complexity of combined detection.
  • the size of time domain resources occupied by the first synchronization signal block and the second synchronization signal block are the same.
  • the number of OFDM symbols occupied by the first synchronization signal block and the second synchronization signal block is the same.
  • frequency domain resources occupied by the first synchronization signal block and the second synchronization signal block are different.
  • the terminal device can determine the type of synchronization signal block (first synchronization signal block or second synchronization signal) to which the synchronization signal belongs according to the frequency domain position of the synchronization signal. Signal block), thereby avoiding unnecessary power consumption of the terminal device when detecting broadcast messages and reducing the complexity of terminal device detection.
  • the synchronization grid corresponding to the first synchronization signal block is different from the synchronization grid corresponding to the second synchronization signal block.
  • the terminal device can determine the type of synchronization signal block (first synchronization signal block or second synchronization signal block) to which the synchronization signal belongs according to the corresponding synchronization grid of the synchronization signal. Two synchronization signal blocks), thereby avoiding unnecessary power consumption of the terminal device when detecting broadcast messages and reducing the complexity of terminal device detection.
  • the second synchronization signal block includes a broadcast message, and does not include the primary synchronization signal and the secondary synchronization signal.
  • the primary synchronization signal and the secondary synchronization signal can be detected in the first synchronization signal block, and the broadcast message can be detected in the second synchronization signal block, so that the narrowband terminal can obtain the broadcast message, thereby obtaining the configuration of the access network device Information ensures the reliability of communication between narrowband terminals and access network equipment.
  • the primary synchronization signal and the secondary synchronization signal block can be detected in the first synchronization signal block, and the broadcast message can be detected in the second synchronization signal block or the second synchronization signal block, so that the broadband terminal can communicate with the access network equipment.
  • the broadband terminal can still maintain data transmission with the access network device according to the broadcast message in the second synchronization signal block, without the need to re-establish a narrowband data transmission link with the access network device , which reduces the system overhead and the complexity of implementing broadband terminals, and also contributes to the continuous transmission of services to ensure user experience.
  • the second synchronization signal block includes a broadcast message, a primary synchronization signal, and a secondary synchronization signal.
  • the primary synchronization signal and/or secondary synchronization signal can be detected in the first synchronization signal block and/or the second synchronization signal block, and the broadcast message can be detected in the second synchronization signal block, which improves the synchronization detection of the narrowband terminal.
  • the efficiency of the signal allows the narrowband terminal to obtain the broadcast message, and then the configuration information of the access network device, which ensures the reliability of the communication between the narrowband terminal and the access network device.
  • the primary synchronization signal and/or secondary synchronization signal can be detected in the first synchronization signal block and/or the second synchronization signal block, and the broadcast message can be detected in the first synchronization signal block or the second synchronization signal block to improve This improves the efficiency of the broadband terminal detecting synchronization signals (primary synchronization signal and secondary synchronization signal), and enables the broadband terminal to still be able to use the second synchronization signal in a scenario where the channel between the broadband terminal and the access network device is poor.
  • the broadcast message in the block maintains data transmission with the access network equipment, without the need to re-establish a narrowband data transmission link with the access network equipment, which reduces the system overhead and the implementation complexity of broadband terminals, and also contributes to business continuity Sexual transmission ensures the user experience.
  • detecting the primary synchronization signal and/or the secondary synchronization signal in the first synchronization signal block and/or the second synchronization signal block may include: detecting the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, or, Detect the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, or detect the primary synchronization signal in the first synchronization signal block, and detect the secondary synchronization signal in the second synchronization signal block, or, in the second synchronization signal block
  • the primary synchronization signal is detected in the middle, and the secondary synchronization signal is detected in the first synchronization signal block.
  • the second synchronization signal block includes a broadcast message and a primary synchronization signal.
  • the primary synchronization signal can be detected in the first synchronization signal block or the second synchronization signal block
  • the secondary synchronization signal can be detected in the first synchronization signal block
  • the broadcast message can be detected in the second synchronization signal block, which improves the narrowband terminal
  • the efficiency of the primary synchronization signal is detected, and the narrowband terminal can obtain the broadcast message, and then the configuration information of the access network device can be obtained, which ensures the reliability of the communication between the narrowband terminal and the access network device.
  • the primary synchronization signal can be detected in the first synchronization signal block or the second synchronization signal block
  • the secondary synchronization signal can be detected in the first synchronization signal block
  • the broadcast can be detected in the first synchronization signal block or the second synchronization signal block.
  • the broadband terminal can still follow the broadcast message in the second synchronization signal block , To maintain data transmission with the access network equipment, without the need to re-establish a narrowband data transmission link with the access network equipment, which reduces the system overhead and the implementation complexity of the broadband terminal, and also contributes to the continuous transmission of the business, ensuring user experience.
  • the second synchronization signal block includes a broadcast message and a secondary synchronization signal.
  • the primary synchronization signal can be detected in the first synchronization signal block
  • the secondary synchronization signal can be detected in the first synchronization signal block or the second synchronization signal block
  • the broadcast message can be detected in the second synchronization signal block, which improves the narrowband terminal
  • the efficiency of the primary synchronization signal is detected, and the narrowband terminal can obtain the broadcast message, and then the configuration information of the access network device can be obtained, which ensures the reliability of communication between the narrowband terminal and the access network device.
  • the primary synchronization signal can be detected in the first synchronization signal block
  • the secondary synchronization signal can be detected in the first synchronization signal block or the second synchronization signal block
  • the broadcast can be detected in the first synchronization signal block or the second synchronization signal block.
  • this application provides a data processing method.
  • the method includes: an access network device generates a first synchronization signal block and a second synchronization signal block, and the frequency bandwidth of the broadcast message in the first synchronization signal block is greater than that of the second synchronization signal block. The frequency bandwidth of the broadcast message in the signal block; the access network device sends the first synchronization signal block and the second synchronization signal block.
  • the access network device may send the first synchronization signal block and the second synchronization signal block, and the frequency bandwidth of the broadcast message in the first synchronization signal block is greater than the frequency bandwidth of the broadcast message in the second synchronization signal block, Therefore, the narrowband terminal can receive the broadcast message in the second synchronization signal block, and obtain the configuration information of the access network device according to the broadcast message in the second synchronization signal block, and the broadband terminal can receive the broadcast message in the first synchronization signal block, The broadcast message in the second synchronization signal block can also be received, so that the broadband terminal can obtain the configuration information of the access network device according to the broadcast message in the first synchronization signal block or the second synchronization signal block.
  • the broadband terminal and the narrowband Both terminals can obtain the broadcast messages sent by the access network equipment, so that both the broadband terminal and the narrowband terminal can obtain the configuration information of the access network equipment, so that both the broadband terminal and the narrowband terminal can perform reliable data transmission with the access network equipment , Improve the reliability of data transmission.
  • the first synchronization signal block further includes a primary synchronization signal and an auxiliary synchronization signal; and the second synchronization signal block further includes at least one of a primary synchronization signal or an auxiliary synchronization signal.
  • the terminal device can detect the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block or the second synchronization signal block.
  • the auxiliary synchronization signal enables the terminal equipment to quickly detect the main synchronization signal and the auxiliary synchronization signal.
  • the second synchronization signal block includes a primary synchronization signal and a secondary synchronization signal
  • the frequency bandwidth of the primary synchronization signal included in the second synchronization signal is the same as the frequency of the primary synchronization signal included in the first synchronization signal block.
  • the bandwidth is the same
  • the frequency bandwidth of the secondary synchronization signal included in the second synchronization signal is the same as the frequency bandwidth of the secondary synchronization signal included in the first synchronization signal block.
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block is the first time domain resource interval; the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block are The time domain resource interval of the synchronization signal is the second time domain resource interval, where the first time domain resource interval and the second time domain resource interval are different.
  • the terminal device can determine the difference between the primary synchronization signal and the secondary synchronization signal.
  • the time domain resource interval determines the type of synchronization signal block (first synchronization signal block or second synchronization signal block) to which the synchronization signal (primary synchronization signal and secondary synchronization signal) belongs, thereby avoiding unnecessary terminal equipment detection of broadcast messages Power consumption and reduce the complexity of terminal equipment detection.
  • the first synchronization signal block and the second synchronization signal block satisfy at least one of the following:
  • the second synchronization signal block includes a main synchronization signal, and the main synchronization signal included in the second synchronization signal block is the same as the sequence of the main synchronization signal included in the first synchronization signal block.
  • the sequence detection complexity is reduced, and the standard design complexity can also be reduced.
  • the second synchronization signal block includes a secondary synchronization signal, and the secondary synchronization signal included in the second synchronization signal block is the same as the sequence of the secondary synchronization signal included in the first synchronization signal block.
  • the sequence detection complexity is reduced, and the standard design complexity can also be reduced.
  • the second synchronization signal block includes a main synchronization signal, and the sequence corresponding to the main synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the main synchronization signal included in the second synchronization signal block.
  • the terminal equipment can determine the type of synchronization signal block (first synchronization signal block or second synchronization signal block) to which the primary synchronization signal belongs based on the detected primary synchronization signal, thereby avoiding unnecessary use of the terminal equipment when detecting broadcast messages. Power consumption and reduce the complexity of terminal equipment detection.
  • the second synchronization signal block includes an auxiliary synchronization signal, and the sequence corresponding to the auxiliary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the auxiliary synchronization signal included in the second synchronization signal block.
  • the terminal equipment can determine the type of synchronization signal block (first synchronization signal block or second synchronization signal block) to which the primary synchronization signal belongs based on the detected primary synchronization signal, thereby avoiding unnecessary use of the terminal equipment when detecting broadcast messages. Power consumption and reduce the complexity of terminal equipment detection.
  • the first synchronization signal block is associated with at least one second synchronization signal block, and the at least one second synchronization signal includes the second synchronization signal block.
  • the terminal device can determine the time domain position of the second synchronization signal block according to the detected first synchronization signal block. For example, for a narrowband terminal, after detecting the synchronization signal (primary synchronization signal and/or secondary synchronization signal) in the first synchronization signal block, the second synchronization signal block can be quickly determined according to the time domain position of the first synchronization signal block , And detect the broadcast message in the second synchronization signal block, and obtain the configuration parameters of the access network device according to the broadcast message in the second synchronization signal block.
  • the synchronization signal primary synchronization signal and/or secondary synchronization signal
  • the number of second synchronization signal blocks associated with each first synchronization signal block is the same.
  • the second synchronization signal block only includes broadcast messages, and the terminal equipment that accesses the access network device through the second synchronization signal block needs to obtain synchronization information through the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block.
  • the number of second synchronization signal blocks associated with each first synchronization signal block is different, the above terminal device also needs to make assumptions about the number of second synchronization signal blocks associated with the first synchronization signal block , And use this for combined detection, which will increase the complexity of terminal equipment accessing the system.
  • the terminal device determines the number of second synchronization signal blocks that can be combined and detected, thereby reducing the complexity of combined detection.
  • the time domain resource interval between the first synchronization signal block and the at least one second synchronization signal block is a predefined or preconfigured time domain resource interval.
  • the terminal device since the time domain resource interval between the first synchronization signal block and the at least one second synchronization signal block is a predefined or preconfigured time domain resource interval, the terminal device, after detecting the first synchronization signal block, The time domain resource position of the second synchronization signal block may be determined according to the time domain position of the first synchronization signal block and a predefined or preconfigured time domain resource interval.
  • the size of time domain resources occupied by the first synchronization signal block and the second synchronization signal block are the same.
  • the number of OFDM symbols occupied by the first synchronization signal block and the second synchronization signal block is the same.
  • frequency domain resources occupied by the first synchronization signal block and the second synchronization signal block are different.
  • the terminal device can determine the type of synchronization signal block (first synchronization signal block or second synchronization signal) to which the synchronization signal belongs according to the frequency domain position of the synchronization signal. Signal block), thereby avoiding unnecessary power consumption of the terminal device when detecting broadcast messages and reducing the complexity of terminal device detection.
  • the synchronization grid corresponding to the first synchronization signal block is different from the synchronization grid corresponding to the second synchronization signal block.
  • the terminal device can determine the type of synchronization signal block (first synchronization signal block or second synchronization signal block) to which the synchronization signal belongs according to the corresponding synchronization grid of the synchronization signal. Two synchronization signal blocks), thereby avoiding unnecessary power consumption of the terminal device when detecting broadcast messages and reducing the complexity of terminal device detection.
  • the access network device transmits the first synchronization signal block and the second synchronization signal block in a time division multiplexing manner.
  • the access network device transmits the first synchronization signal block and the second synchronization signal block in a frequency division multiplexing manner.
  • this application provides a communication device, including:
  • a receiving module configured to receive a second synchronization signal block sent by an access network device
  • a processing module configured to obtain a broadcast message according to the second synchronization signal block
  • the frequency bandwidth of the broadcast message in the first synchronization signal block is greater than the frequency bandwidth of the broadcast message in the second synchronization signal block, and the first synchronization signal block corresponds to the access network device.
  • the first synchronization signal block further includes a primary synchronization signal and a secondary synchronization signal
  • the second synchronization signal block further includes at least one of a primary synchronization signal or a secondary synchronization signal.
  • the second synchronization signal block includes a primary synchronization signal and a secondary synchronization signal
  • the frequency bandwidth of the primary synchronization signal included in the second synchronization signal is the same as that included in the first synchronization signal block.
  • the frequency bandwidth of the primary synchronization signal is the same
  • the frequency bandwidth of the secondary synchronization signal included in the second synchronization signal is the same as the frequency bandwidth of the secondary synchronization signal included in the first synchronization signal block.
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block is the first time domain resource interval
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block is a second time domain resource interval, wherein the first time domain resource interval and the second time domain resource interval are different .
  • the first synchronization signal block and the second synchronization signal block satisfy at least one of the following:
  • the second synchronization signal block includes a primary synchronization signal, and the primary synchronization signal included in the second synchronization signal block is the same as the sequence of the primary synchronization signal included in the first synchronization signal block;
  • the second synchronization signal block includes a secondary synchronization signal, and the secondary synchronization signal included in the second synchronization signal block is the same as the sequence of the secondary synchronization signal included in the first synchronization signal block;
  • the second synchronization signal block includes a primary synchronization signal, and the sequence corresponding to the primary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the primary synchronization signal included in the second synchronization signal block;
  • the second synchronization signal block includes an auxiliary synchronization signal, and the sequence corresponding to the auxiliary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the auxiliary synchronization signal included in the second synchronization signal block.
  • the first synchronization signal block is associated with at least one second synchronization signal block, and the at least one second synchronization signal block includes the second synchronization signal block.
  • the time domain resource interval between the first synchronization signal block and the at least one second synchronization signal block is a predefined or preconfigured time domain resource interval.
  • this application provides a communication device, including:
  • a processing module configured to generate a first synchronization signal block and a second synchronization signal block, the frequency bandwidth of the broadcast message in the first synchronization signal block is greater than the frequency bandwidth of the broadcast message in the second synchronization signal block;
  • the sending module is used to send the first synchronization signal block and the second synchronization signal block.
  • the first synchronization signal block further includes a primary synchronization signal and a secondary synchronization signal
  • the second synchronization signal block further includes at least one of a primary synchronization signal or a secondary synchronization signal.
  • the second synchronization signal block includes a primary synchronization signal and a secondary synchronization signal
  • the frequency bandwidth of the primary synchronization signal included in the second synchronization signal is the same as that included in the first synchronization signal block.
  • the frequency bandwidth of the primary synchronization signal is the same
  • the frequency bandwidth of the secondary synchronization signal included in the second synchronization signal is the same as the frequency bandwidth of the secondary synchronization signal included in the first synchronization signal block.
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block is the first time domain resource interval
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block is a second time domain resource interval, wherein the first time domain resource interval and the second time domain resource interval are different .
  • the first synchronization signal block and the second synchronization signal block satisfy at least one of the following:
  • the second synchronization signal block includes a primary synchronization signal, and the primary synchronization signal included in the second synchronization signal block is the same as the sequence of the primary synchronization signal included in the first synchronization signal block;
  • the second synchronization signal block includes a secondary synchronization signal, and the secondary synchronization signal included in the second synchronization signal block is the same as the sequence of the secondary synchronization signal included in the first synchronization signal block;
  • the second synchronization signal block includes a primary synchronization signal, and the sequence corresponding to the primary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the primary synchronization signal included in the second synchronization signal block;
  • the second synchronization signal block includes an auxiliary synchronization signal, and the sequence corresponding to the auxiliary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the auxiliary synchronization signal included in the second synchronization signal block.
  • the first synchronization signal block is associated with at least one second synchronization signal block, and the at least one second synchronization signal includes the second synchronization signal block.
  • the number of second synchronization signal blocks associated with each first synchronization signal block is the same.
  • the time domain resource interval between the first synchronization signal block and the at least one second synchronization signal block is a predefined or preconfigured time domain resource interval.
  • the present application provides a communication device, including a memory and a processor, and the processor executes program instructions in the memory to implement the communication method described in any one of the first aspect.
  • the present application provides a communication device, including a memory and a processor, and the processor executes program instructions in the memory to implement the communication method described in any one of the second aspect.
  • the present application provides a storage medium for storing a computer program, which is used to implement the communication method described in any one of the first aspect when the computer program is executed by a computer or a processor.
  • the present application provides a storage medium for storing a computer program, which is used to implement the communication method described in any one of the second aspects when the computer program is executed by a computer or a processor.
  • the access network equipment can transmit the first synchronization signal block and the second synchronization signal block, and the frequency bandwidth of the broadcast message in the first synchronization signal block is larger than that of the broadcast in the second synchronization signal block.
  • the frequency bandwidth of the message can be transmitted.
  • the narrowband terminal can receive the broadcast message in the second synchronization signal block, and obtain the configuration information of the access network device according to the broadcast message in the second synchronization signal block, and the broadband terminal can receive the broadcast message in the first synchronization signal block.
  • the broadcast message can also receive the broadcast message in the second synchronization signal block, so that the broadband terminal can obtain the configuration information of the access network device according to the broadcast message in the first synchronization signal block or the second synchronization signal block.
  • Both the terminal and the narrowband terminal can obtain the broadcast message sent by the access network equipment, so that both the broadband terminal and the narrowband terminal can obtain the configuration information of the access network equipment, ensuring that terminal equipment of different bandwidths, especially the narrowband terminal and the access network The reliability of data transmission between devices.
  • Figure 1 is an architecture diagram of the communication system provided by this application.
  • FIG. 2 is a schematic diagram of the communication method provided by this application.
  • FIG. 3 is a schematic structural diagram of a first synchronization signal block provided by this application.
  • FIG. 4 is a schematic diagram of a process of sending a first synchronization signal block and a second synchronization signal block provided by this application;
  • FIG. 5 is a schematic structural diagram of a second synchronization signal block provided by this application.
  • FIG. 6 is a schematic flowchart of another communication method provided by this application.
  • FIG. 7 is a schematic structural diagram of another second synchronization signal block provided by this application.
  • FIG. 8A is a schematic structural diagram of another second synchronization signal block provided by this application.
  • 8B is a schematic structural diagram of another second synchronization signal block provided by this application.
  • FIG. 8C is a schematic structural diagram of still another second synchronization signal block provided by this application.
  • FIG. 8D is a schematic structural diagram of another second synchronization signal block provided by this application.
  • FIG. 9 is a schematic flowchart of another communication method provided by this application.
  • FIG. 10 is a schematic structural diagram of another second synchronization signal block provided by this application.
  • FIG. 11 is a schematic flowchart of another communication method provided by this application.
  • FIG. 12 is a schematic structural diagram of another second synchronization signal block provided by this application.
  • FIG. 13 is a schematic flowchart of another communication method provided by this application.
  • FIG. 14 is a schematic structural diagram of a communication device provided by this application.
  • 15 is a schematic diagram of the structure of the communication device provided by this application.
  • 16 is a schematic diagram of the hardware structure of a communication device provided by this application.
  • FIG. 17 is a schematic diagram of the hardware structure of a communication device provided by this application.
  • the technical solution shown in this application can be applied to the fifth generation mobile communication technology (The 5th Generation mobile communication technology, referred to as 5G) system, and the 5G system can also be called the fifth generation mobile communication technology New Radio (NR) system .
  • LTE Long-term evolution
  • V2X vehicle-to-all
  • D2D device-to-device
  • MTC Machine-type communications in LTE communication systems
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • UMTS Universal Mobile Telecommunications System
  • Terminal devices include but are not limited to mobile stations (Mobile Station, MS), mobile terminals (Mobile Terminal, MT), mobile phones (Mobile Telephone, MT), and mobile phones ( Handset and portable equipment (portable equipment), etc.
  • the terminal device can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the terminal device may be a mobile phone (or called a "cellular" phone), a computer with wireless communication function, etc.
  • the terminal device may also be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device or device.
  • the terminal devices involved in this application may include broadband terminal devices (hereinafter referred to as broadband terminals) and narrowband terminal devices (hereinafter referred to as narrowband terminals).
  • broadband terminals hereinafter referred to as broadband terminals
  • narrowband terminals narrowband terminal devices
  • the maximum frequency bandwidth of the narrowband terminal is not greater than the minimum frequency bandwidth of the broadband terminal.
  • the maximum frequency bandwidth and the minimum frequency bandwidth can be respectively understood as the maximum frequency bandwidth and the minimum frequency bandwidth occupied by the data transmission when the terminal and the access network device perform data transmission.
  • the data transmission here includes control and service data transmission, such as synchronization signal transmission, broadcast channel transmission, system message transmission, unicast service and broadcast service data transmission, etc.
  • the narrowband terminal is the terminal device of the Narrow Band Internet of Things (NB-IoT) system (hereinafter referred to as the NB-IoT terminal), and the broadband terminal is the terminal device of the LTE system or the NR system, it can be considered as narrowband
  • the maximum frequency bandwidth of the terminal is not greater than the minimum frequency bandwidth of the broadband terminal.
  • the frequency bandwidth of the NB-IoT terminal is usually 1 Resource Block (RB), and one RB includes 12 subcarriers. When the subcarrier spacing is 15kHz, the frequency bandwidth of the NB-IoT terminal is 180kHz.
  • RB Resource Block
  • the frequency bandwidth of the NB-IoT device is 200kHz, that is, the maximum frequency bandwidth of the narrowband terminal is 200kHz.
  • the primary synchronization signal block ((Primary Synchronization Signal, PSS) and the secondary synchronization signal block (Secondary Synchronization Signal, SSS) in the LTE system occupy 6 RBs respectively, and one RB includes 12 subcarriers.
  • the subcarrier spacing is 15kHz
  • the frequency bandwidth occupied by PSS and SSS is 1.08MHz respectively.
  • the terminal equipment in the LTE system (hereinafter referred to as LTE terminal) has the ability to receive PSS and SSS.
  • the minimum frequency bandwidth of LTE terminal is 1.08MHz, if the protection frequency bandwidth is added, the minimum frequency bandwidth of the LTE terminal is 1.44MHz. It can be seen from the above that when the narrowband terminal is an NB-IoT terminal and the broadband terminal is an LTE terminal, the maximum frequency bandwidth of the narrowband terminal is smaller than that of the broadband terminal Minimum frequency bandwidth.
  • one RB includes 12 subcarriers, and the number of RBs involved in the embodiment of the present application can be replaced with the number of subcarriers. For example, 20 RBs can be replaced with 240 subcarriers.
  • the frequency resources occupied by (Synchronization Signal Block, SSB) in the NR system are 20 RBs, and one RB includes 12 subcarriers.
  • the subcarrier spacing is 15kHz
  • the frequency bandwidth occupied by the SSB is 3.6MHz, respectively.
  • the terminal device in (hereinafter referred to as the NR terminal) has the ability to receive SSB. Therefore, the minimum frequency bandwidth of the NR terminal is 3.6 MHz. It can be seen from the above that when the narrowband terminal is an NB-IoT terminal and the broadband terminal is an NR terminal, the maximum frequency bandwidth of the narrowband terminal is smaller than the minimum frequency bandwidth of the broadband terminal.
  • the maximum data transmission frequency bandwidth that can be supported is 6 RBs, that is, when the narrowband terminal is the MTC terminal, the broadband terminal is the LTE enhanced broadband ( In the case of Enhanced Mobile Broadband (eMBB) or NR eMBB terminals, the maximum frequency bandwidth of the narrowband terminal is equal to or less than the minimum frequency bandwidth of the broadband terminal.
  • eMBB Enhanced Mobile Broadband
  • NR eMBB NR eMBB terminals
  • the minimum frequency bandwidth of the narrowband terminal is smaller than the minimum frequency bandwidth of the broadband terminal.
  • the terminal device before the terminal device establishes a connection with the access network device, the terminal device first receives the synchronization channel and the broadcast channel sent by the access network device, so that the terminal device can receive the synchronization channel and the broadcast channel sent by the access network device .
  • the minimum frequency bandwidth of the terminal device needs to be greater than or equal to the frequency bandwidth corresponding to the synchronization signal and the broadcast channel sent by the access network device.
  • the synchronization signal sent by the access network equipment and the corresponding frequency bandwidth of the broadcast channel can be directly understood as the minimum frequency bandwidth required by the terminal equipment if you want to access the access network equipment, that is, the minimum Frequency bandwidth.
  • the frequency bandwidth corresponding to the synchronization signal sent by the access network device and the broadcast channel can be understood as the frequency bandwidth corresponding to the frequency resource to which the synchronization signal sent by the access network device and the broadcast channel are mapped, as described above
  • the frequency bandwidth corresponding to the synchronization signal and the broadcast channel sent by the access network device can be understood as 6 RBs, and for the NR system, it can be understood as 20 RBs.
  • the frequency bandwidth of the synchronization channel and the broadcast channel sent by the access network equipment received by the broadband terminal is generally greater than the synchronization channel and the broadcast channel sent by the access network equipment received by the narrowband terminal, it can be considered as the minimum frequency bandwidth of the narrowband terminal Less than the minimum frequency bandwidth of the broadband terminal.
  • the frequency bandwidth of the synchronization channel and broadcast channel sent by the access network device received by the NB-IoT terminal device (narrowband terminal) is 1 RB
  • the synchronization channel and broadcast channel sent by the access network device received by the eMBB terminal The frequency bandwidth is 6 RBs (corresponding to the LTE system) or 20 RBs (corresponding to the LTE system).
  • the narrowband terminal needs to maintain normal data communication with the access network equipment through the Coverage Enhancement (CE) technology, and the broadband terminal equipment can communicate with the access network equipment even if it does not pass the CE technology.
  • CE technology includes, but is not limited to, data repeated transmission, power enhancement and other technologies.
  • the broadband terminal equipment needs to maintain normal data communication through repeated data transmission and the access network equipment in certain scenarios (for example, the signal quality of the environment where the broadband terminal is located), then the narrowband terminal equipment and the access The maximum number of repetitions required by the network equipment to maintain data communication is less than the maximum number of repetitions required by the broadband terminal equipment to maintain data communication with the access network.
  • a narrowband terminal may also be understood as a bandwidth limited (Bandwidth Limited, BL) terminal.
  • the communication system involved in this application includes access network equipment.
  • the access network equipment can be a gNB or a transmission and reception point (TRP) in a 5G communication system, a micro base station, etc., or an evolution in the LTE system.
  • Type base station (Evolutional Node B, eNB or eNodeB), or, or access network equipment can be relay stations, access points, vehicle-mounted equipment, wearable equipment, and the future evolution of the Public Land Mobile Network (PLMN) Network equipment, or in other multi-technology converged networks, or base stations in various other evolved networks.
  • PLMN Public Land Mobile Network
  • Figure 1 is an architecture diagram of the communication system provided by this application. Referring to FIG. 1, a terminal device 101 and an access network device 102 are included in the communication system.
  • the terminal device 101 can obtain synchronization signals sent (for example, broadcast) by the access network device, such as the primary synchronization signal and the secondary synchronization signal, and the terminal device can implement the synchronization signal with the access network device 102 according to the primary synchronization signal and the secondary synchronization signal. Synchronization (e.g. time synchronization, frequency synchronization). After the terminal device 101 and the access network device 102 are synchronized, the terminal device 101 may also receive broadcast messages sent by the access network device 102, such as information carried in a physical broadcast channel or system information (SI), and Correctly demodulate the broadcast message.
  • SI system information
  • the broadcast message includes the configuration information of the access network device 102, such as bandwidth configuration, subcarrier spacing configuration, random access channel (Random Access CHannel, RACH) configuration information, etc.
  • the terminal device 101 The configuration information of the access network device can be obtained in the broadcast message.
  • the access network device 102 may send a first synchronization signal block and a second synchronization signal block.
  • the first synchronization signal block includes a primary synchronization signal, a secondary synchronization signal, and a broadcast message
  • the second synchronization signal block includes a broadcast message.
  • Message, and the frequency bandwidth of the broadcast message in the first synchronization signal block is greater than the frequency bandwidth of the broadcast message in the second synchronization signal block.
  • the narrowband terminal can receive the broadcast message in the second synchronization signal block.
  • the narrowband terminal can also obtain the configuration information of the access network device according to the broadcast message in the second synchronization signal block, and the broadband terminal can receive
  • the broadcast message in the first synchronization signal block can also receive the broadcast message in the second synchronization signal block, so that the broadband terminal can obtain the configuration of the access network device according to the broadcast message in the first synchronization signal block or the second synchronization signal block
  • both the broadband terminal and the narrowband terminal can obtain the broadcast message sent by the access network device, so that both the broadband terminal and the narrowband terminal can obtain the configuration information of the access network device, which improves the reliability of communication.
  • FIG. 1 merely illustrates an architecture diagram of a communication system to which this application is applied by way of example, and does not limit the architecture of a communication system to which this application is applied.
  • the terminal device involved in the embodiments of the present application includes a narrowband terminal and a broadband terminal, that is, the terminal device may be a narrowband terminal or a broadband terminal.
  • Figure 2 is a schematic diagram of the communication method provided by this application. See Figure 2.
  • the method can include:
  • the access network device generates a first synchronization signal block and a second synchronization signal block.
  • the frequency bandwidth of the broadcast message in the first synchronization signal block is greater than the frequency bandwidth of the broadcast message in the second synchronization signal block.
  • the first synchronization signal block may include a primary synchronization signal, a secondary synchronization signal, and a broadcast message.
  • the primary synchronization signal and the secondary synchronization signal are used to synchronize the terminal equipment with the access network equipment.
  • the access network device sends the broadcast message through the broadcast channel.
  • the terminal device can demodulate the broadcast message sent by the access network device to obtain configuration information of the access network device.
  • the broadcast channel is a physical broadcast channel (PBCH).
  • the broadcast message includes configuration information provided by the access network device for the terminal device.
  • the configuration information may include bandwidth configuration, subcarrier spacing configuration, RACH configuration, and so on.
  • the first synchronization signal block may be a synchronization signal block sent by the access network device in the prior art, that is, the frequency bandwidth occupied by the broadcast message in the first synchronization signal block is usually greater than the maximum frequency bandwidth of the narrowband terminal, resulting in the narrowband terminal
  • the broadcast message in the first synchronization signal block sent by the access network device cannot be received.
  • the second synchronization signal block may only include broadcast messages. Included here means that the primary synchronization signal and the secondary synchronization signal are not included. In a scenario where the second synchronization signal block only includes broadcast messages, the second synchronization signal block may be replaced with a second broadcast channel or a second physical broadcast channel.
  • the maximum frequency bandwidth of the narrowband terminal is equal to or greater than the frequency bandwidth of the primary synchronization signal and the frequency bandwidth of the secondary synchronization signal in the first synchronization signal block.
  • the narrowband terminal can receive the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block.
  • the structure of the first synchronization signal block may be as shown in FIG. 3.
  • FIG. 3 is a schematic structural diagram of a first synchronization signal block provided by this application.
  • the first synchronization signal block includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a broadcast message, where the broadcast message is transmitted through a physical broadcast channel (PBCH).
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • the first synchronization signal block occupies 4 orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the first synchronization signal block occupies 20 RBs.
  • the primary synchronization signal occupies 12 RBs on the first OFDM symbol
  • the secondary synchronization signal occupies 12 RBs on the third OFDM symbol
  • the broadcast message occupies 20 RBs on the second OFDM symbol. 8 RBs on the third OFDM symbol, and 20 RBs on the fourth OFDM symbol.
  • the terminal device can access the NR through the first synchronization signal block shown in Figure 3 Access network equipment in the system.
  • the frequency bandwidth of the terminal device can also be expressed as the frequency bandwidth capability of the terminal device when communicating with the access network device, and the frequency bandwidth capability can also be expressed as the terminal device and the access network device.
  • the frequency bandwidth capability of a terminal device is 20 RBs, which means that when the terminal device communicates with the access network device, it can receive data with a bandwidth equal to or less than 20 RBs sent by the access network device, or send data to the access network device.
  • the network device sends data with a bandwidth equal to or less than 20 RBs.
  • the second synchronization signal block occupies at least one OFDM symbol in the time domain, and when the number of OFDM symbols occupied by the second synchronization signal block in the time domain is greater than 1, the second synchronization signal block is in the time domain
  • the occupied OFDM symbols are continuous. For example, assuming that the second synchronization signal block occupies 3 OFDM symbols in the time domain, the 3 OFDM symbols are continuous in the time domain.
  • the frequency bandwidth of the broadcast message in the second synchronization signal block is smaller than the frequency bandwidth of the broadcast message in the first synchronization signal block.
  • the frequency bandwidth of the broadcast message in the second synchronization signal block is less than 20 RBs, or less than 240 subcarriers.
  • the second synchronization signal block is used for narrowband terminal equipment, so the frequency bandwidth is smaller than the frequency bandwidth of the first synchronization signal block, that is, less than 240 subcarriers or 20 RBs.
  • the frequency bandwidth of the second synchronization signal block may be a fixed value, or a pre-defined or set value. For example, assuming that the first synchronization signal block is as shown in FIG. 3, the frequency bandwidth of the second synchronization signal block is less than 20 RBs. When the subcarrier spacing is 15 kHz, the frequency bandwidth of the second synchronization signal block is less than 3.6 MHz.
  • the frequency bandwidth occupied by the broadcast message in the second synchronization signal block is less than or equal to the minimum frequency bandwidth of the narrowband terminal, so that the narrowband terminal can receive the broadcast message in the second synchronization signal block, in other words, narrowband terminal equipment
  • the frequency bandwidth capability of is greater than or equal to the frequency bandwidth corresponding to the broadcast message included in the second synchronization signal block, or in other words, the frequency bandwidth occupied by the broadcast message in the second synchronization signal block is less than or equal to the maximum frequency bandwidth of the narrowband terminal.
  • the size of the time domain resource occupied by the broadcast message in the second synchronization signal block may be the same as the size of the time domain resource occupied by the first synchronization signal block.
  • the size of the time domain resource may be represented by the number of OFDM symbols.
  • the broadcast message is carried in a broadcast channel or a physical broadcast channel, so the above example can also be understood as that the 4 OFDM symbols are all used to transmit the broadcast channel included in the second synchronization signal block.
  • the size of the time domain resource occupied by the broadcast message in the second synchronization signal block may be different from the size of the time domain resource occupied by the first synchronization signal block.
  • the size of the time domain resource may be represented by the number of OFDM symbols. For example, when the first synchronization signal block occupies 4 OFDM symbols, the second synchronization signal block including only the broadcast message may occupy 2, 3, or 4 OFDM symbols, or even more than 4 symbols.
  • the size of the time domain resource occupied by the second synchronization signal block and the size of the time domain resource occupied by the first synchronization signal block may be the same or different.
  • the size of the time domain resource is represented by the number of OFDM symbols. If the first synchronization signal block occupies 4 OFDM symbols, the number of OFDM symbols occupied by the second synchronization signal block may be equal to 4 or not.
  • the size of the time domain resource occupied by the broadcast message in the second synchronization signal block can be set according to actual needs.
  • the access network device may send the first synchronization signal block and the second synchronization signal block in a time division multiplexing (TDM) manner. That is, the time domain resources occupied by the first synchronization signal block and the second synchronization signal block sent by the access network device are different.
  • TDM time division multiplexing
  • the access network device may also send the first synchronization signal block and the second synchronization signal block in a frequency division multiplexing (Frequency Division Multiplexing, FDM) manner. That is, the frequency domain resources occupied by the first synchronization signal block and the second synchronization signal block sent by the access network device are different. Further optionally, if the frequency domain resources are represented by a synchronization raster, the synchronization rasters corresponding to the first synchronization signal block and the second synchronization signal block sent by the access network device are different.
  • FDM Frequency Division Multiplexing
  • the access network device sends the first synchronization signal block and the second synchronization signal block.
  • the access network device may periodically send the first synchronization signal block and periodically send the second synchronization signal block.
  • the period during which the access network sends the first synchronization signal block and the period during which the second synchronization signal block is sent may be the same or different.
  • the period in which the access network device sends the first synchronization signal block may be the same as the period in which the terminal device in the idle state detects the synchronization signal block.
  • the period for the access network device to send the first synchronization signal block may be 20 milliseconds.
  • the period for sending the first synchronization signal block and the period for sending the second synchronization signal block can be set according to actual needs, which is not specifically limited in this application.
  • the access network device may repeatedly send multiple first synchronization signal blocks in one cycle of sending the first synchronization signal block.
  • the multiple first synchronization signal blocks repeatedly sent in one period carry the same information. It should be noted that, if the first synchronization signal block includes the time information of the access network device, and the time information varies with the time position of the first synchronization signal block, then multiple first synchronization signal blocks that are repeatedly sent in one cycle
  • the information carried by the synchronization signal block is the same, which may mean that the information except for the time information included in the first synchronization signal block is the same.
  • the multiple first synchronization signal blocks repeatedly sent in one cycle carry the same information, which may mean that all the information carried by the second synchronization signal block is the same.
  • the information carried by the first synchronization signal block may be a broadcast message included in the first synchronization signal block.
  • the access network device sends the first synchronization signal block at time position 1, time position 2, time position 3, and time position 4 respectively, that is, in one cycle, the access network device transmits 4
  • the first synchronization signal block the above four time positions do not overlap each other, the terminal device can determine the time position corresponding to the first synchronization signal block according to the detected first synchronization signal block, that is, the access network equipment is in different
  • the first synchronization signal block sent at the time position includes its corresponding time position.
  • the access network device repeatedly sends four first synchronization signal blocks in one cycle.
  • the multiple first synchronization signal blocks repeatedly sent in a cycle may correspond to the same transmit beam direction of the access network device, or may correspond to different transmit beam directions of the access network device, which is not specifically limited in this application. .
  • the period during which the access network device sends multiple first synchronization signal blocks may be the period during which the access network device sends the first synchronization signal block by default in the idle or inactive state.
  • the default access network device of the idle state terminal sends the first synchronization signal block at a period of 20 ms.
  • the Inactive state terminal is a kind of terminal equipment between the idle state and the active state (Active).
  • the access network device can send multiple first synchronization signal blocks. For example, for a frequency band with a center frequency of less than 3 GHz, the access network device can send up to 4 first synchronization signal blocks in a period.
  • a synchronization signal block for a frequency band with a center frequency greater than 3 GHz and less than 6 GHz, the access network device can transmit at most 8 first synchronization signal blocks in one cycle.
  • the access network device Since the access network device repeatedly sends multiple first synchronization signal blocks, the probability that the terminal device detects the first synchronization signal block can be improved.
  • the terminal device may perform combined detection on the received multiple first synchronization signal blocks, which improves the probability that the terminal device correctly demodulates the first synchronization signal blocks.
  • the access network device may send multiple second synchronization signal blocks in one cycle of sending the second synchronization signal block.
  • the multiple second synchronization signal blocks sent in one period carry the same information.
  • the second synchronization signal block includes the time information of the access network device, and the time information varies with the time position of the second synchronization signal block, multiple second synchronization signals sent in one cycle
  • the information carried by the signal blocks is the same, which may mean that the information except for the time information included in the second synchronization signal block is the same.
  • the second synchronization signal block does not include the time information of the access network device, the multiple second synchronization signal blocks sent in one period carry the same information, which may mean that all the information carried by the second synchronization signal block is the same.
  • the time information of the access network device may include the time domain resource location corresponding to the second synchronization signal block, and the time domain resource location may be defined by the system frame number (SFN), half frame number, and
  • the index of the second synchronization signal block is represented, where the index of the second synchronization signal block and the time position corresponding to the time domain resource of the second synchronization signal block are in a one-to-one correspondence.
  • the time position corresponding to the time domain resource of the second synchronization signal block can be represented by the OFDM symbol index.
  • the time information of the access network device can be represented by the SFN, the field number, and the index of the second synchronization signal block. Said.
  • the time information of the access network device can also be represented by the SFN, the field number, and the index of the first synchronization signal block, where the index of the first synchronization signal block corresponds to the time domain resource of the first synchronization signal. Time position is one-to-one correspondence.
  • the information carried by the second synchronization signal block may be a broadcast message included in the second synchronization signal block.
  • the access network device sends the second synchronization signal block in time domain resource 1, time domain resource 2, time domain resource 3, and time domain resource 4. That is, in one cycle, the access network device Four second synchronization signal blocks are sent, and the above four time domain resources do not overlap in the time domain.
  • the terminal device can determine the second synchronization signal block corresponding to the second synchronization signal block based on the detected second synchronization signal block.
  • the time domain resource for example, can determine the SFN corresponding to the second synchronization signal block, the field number, and the OFDM symbol position occupied by the second synchronization signal block in one half frame.
  • the second synchronization signal blocks sent by the access network device on different time domain resources include its corresponding time domain resource information.
  • the information carried by the four second synchronization signal blocks is Except for the time domain resource information, all other information is the same. It can be considered that the information carried by the four second synchronization signal blocks in one period is the same, or that the access network device transmits 4 signals in one period.
  • a second sync signal block is
  • the multiple second synchronization signal blocks sent in one cycle may correspond to the same transmit beam direction of the access network device, or may correspond to different transmit beam directions of the access network device, which is not specifically limited in this application.
  • the sending period of the second synchronization signal block may also be understood as the sending period of the second synchronization signal block defaulted by the terminal in the idle state or the inactive state.
  • the access network device sends multiple second synchronization signal blocks, the probability that the terminal device detects the second synchronization signal block can be improved.
  • the terminal device can perform combined detection on the received multiple second synchronization signal blocks, which improves the probability that the terminal device correctly demodulates the second synchronization signal blocks.
  • the terminal device may perform combined detection on the second synchronization signal block sent by the access network device in one sending period according to the sending period of the second synchronization signal block.
  • the period during which the access network device sends the first synchronization signal block is the same as the period during which the second synchronization signal block is sent, the period during which the access network device sends the first synchronization signal block and the access network device sends the second synchronization signal The time period of the signal block is different. In this way, the transmission of the second synchronization signal block does not affect the transmission of the first synchronization signal block, thereby ensuring the reliability of obtaining the configuration information of the access network device through the first synchronization signal block.
  • the period during which the access network device sends the first synchronization signal block is the same as the period during which the second synchronization signal block is sent.
  • the cycle is 20ms. In a scenario with the same cycle, the present application does not specifically limit the sending start or end positions of the first and second synchronization signal blocks.
  • the terminal device may perform combined detection on the first synchronization signal block sent by the access network device in one transmission period according to the period during which the access network device sends the first synchronization signal block.
  • FIG. 4 is a schematic diagram of the process of sending the first synchronization signal block and the second synchronization signal block provided by this application.
  • the period of the access network device sending the first synchronization signal block and the period of sending the second synchronization signal block are both 20 milliseconds.
  • the access network device can send multiple first synchronization signal blocks within the first 5 millisecond window of the cycle, and multiple second synchronization signals within the last 15 millisecond window of the cycle Piece.
  • the number of transmissions of the first synchronization signal block in a cycle and the time window occupied by the transmission of the first synchronization signal block can be set according to actual needs, and the second synchronization signal block can be set according to actual needs.
  • the number of times the synchronization signal block is sent and the time window occupied by sending the first synchronization signal block are not specifically limited in this application.
  • the first synchronization signal block sent by the access network device is associated with at least one second synchronization signal block.
  • the access network device sends at least one first synchronization signal block and at least one second synchronization signal block, and the first synchronization signal block is associated with at least one second synchronization signal block.
  • the one period may be a period in which the access network device sends the first synchronization signal block, or the one period may be a period in which the access network device sends the second synchronization signal block.
  • the access network device repeatedly transmits at least one first synchronization signal block. For example, referring to FIG. 4, in one cycle (20 milliseconds), the access network device repeatedly transmits 4 first synchronization signal blocks. In one cycle, the access network device repeatedly transmits at least one second synchronization signal block. For example, referring to FIG. 4, in one cycle (20 milliseconds), the access network device repeatedly transmits 8 second synchronization signal blocks.
  • the one period can also be understood as a time range, within this time range, includes the first synchronization signal block sent by the access network device in the period when the first synchronization signal block is sent, and the access network device
  • the second synchronization signal block is transmitted during the period when the second synchronization signal block is transmitted.
  • This time range occurs periodically, that is, in each time range, the transmission patterns of the first synchronization signal block and the second synchronization signal block are the same.
  • the access network device sends 4 first synchronization signal blocks in the period of sending the first synchronization signal block, and sends 8 second synchronization signal blocks in the period of sending the second synchronization signal block, then every In each time range, 4 first synchronization signal blocks and 8 second synchronization signal blocks sent by the access network equipment are included, and in each time range, the transmission of the first synchronization signal block and the second synchronization signal block
  • the pattern is the same.
  • the access network device first sends 4 first synchronization signal blocks, and then 8 second synchronization signal blocks, and within a time range, the time domain between adjacent synchronization signal blocks
  • the resource interval is the same in each time range.
  • the first synchronization signal block is associated with at least one second synchronization signal block. It may be that the terminal device can determine the time when at least one second synchronization signal block is associated with the first synchronization signal block according to the first synchronization signal block. Domain location. It should be noted that the terminal device determines the time domain position of the second synchronization signal block associated with it according to the first synchronization signal block, which may be based on the primary synchronization signal, secondary synchronization signal, or broadcast message included in the first synchronization signal block.
  • At least one of determining the second synchronization signal block associated therewith or, optionally, the first synchronization signal block sent by the access network device is associated with at least one second synchronization signal block, which can also be understood as the first synchronization
  • the signal block and the access network device corresponding to the at least one second synchronization signal block associated with the signal block send the same beam direction. This is mainly due to the limited bandwidth capability of the narrowband terminal equipment, and therefore cannot receive the broadcast message in the first synchronization signal block, but can receive the primary synchronization signal and/or the secondary synchronization signal included in the first synchronization signal block.
  • the primary synchronization signal and/or the secondary synchronization signal included in the detected first synchronization signal block are associated with at least one second synchronization signal block.
  • the time domain resource interval between the first synchronization signal block and the associated second synchronization signal block may be a pre-defined or pre-configured time domain resource interval.
  • the time domain resource interval between the first synchronization signal block and the associated second synchronization signal block may be: between the start time domain position of the first synchronization signal block and the start time domain position of the associated second synchronization signal block
  • the time domain resource interval between the domain position and the end time domain position of the associated second synchronization signal block, or the difference between the end time domain position of the first synchronization signal block and the start time domain position of the associated second synchronization signal block The time domain resource interval between.
  • the start time domain position of the first synchronization signal block may be the start time of a specific OFDM symbol used to transmit the first synchronization signal block. Domain position, for example, the start time domain position of the first synchronization signal block may be the start time domain position of the first OFDM symbol, or may also be the start time domain position of other OFDM symbols, which is not specifically described in this application limited.
  • the end time domain position of the first synchronization signal block may be the end time domain position of a certain OFDM symbol used to transmit the first synchronization signal block.
  • the start time domain position of the first synchronization signal block may be the last OFDM symbol.
  • the termination time domain position of the symbol may also be the termination time domain position of other OFDM symbols, which is not specifically limited in this application.
  • the description of the start time domain position and the end time domain position of the second synchronization signal block can be found in the above description of the first synchronization signal block.
  • the description of the start time domain position and the end time domain position of the signal block will not be repeated here.
  • the time domain resource interval between the first synchronization signal block and the associated second synchronization signal block can be understood as:
  • the time domain resource interval between the signal block and one of the second synchronization signal blocks for example, the time domain resource interval between the first second synchronization signal block among the associated multiple second synchronization signal blocks.
  • a first synchronization signal block can be associated with multiple (greater than or equal to two) second synchronization signal blocks. If the first synchronization signal block and its associated second synchronization signal block are FDM distributed, then the first synchronization signal block is associated with The multiple second synchronization signal blocks are also distributed by FDM.
  • the corresponding access network device sends the beam direction that is the same as the beam direction for the access network device to send the first synchronization signal block.
  • the time domain resource interval between the same first synchronization signal block and the associated different second synchronization signal block may be the same or different.
  • the domain resource interval may be the first preset time domain resource interval
  • the time domain resource interval between the synchronization signal block 1 and the synchronization signal block 3 may be the second preset time domain resource interval.
  • the time domain resource interval between different first synchronization signal blocks and associated second synchronization signal blocks may be the same or different.
  • the time domain resource interval between the first synchronization signal block (synchronization signal block 1) and the associated second synchronization signal block (synchronization signal block 2) is the first preset time domain resource interval
  • the first synchronization signal block ( The time domain resource interval between the synchronization signal block 3) and the associated second synchronization signal block (synchronization signal block 4) is the second preset time domain resource interval
  • the domain resource interval can be the same or different. It should be noted that both the first preset time domain resource interval and the second preset time domain resource interval shown here may be pre-defined or pre-configured.
  • the number of second synchronization signal blocks associated with each first synchronization signal block is the same.
  • the number of second synchronization signal blocks associated with each first synchronization signal block is preset. In this way, the combined detection complexity of the terminal device can be reduced.
  • the second synchronization signal block only includes broadcast messages, and the terminal equipment that accesses the access network device through the second synchronization signal block needs to obtain synchronization information through the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block.
  • the above terminal device determines the number of second synchronization signal blocks that can be combined and detected, thereby reducing the complexity of combined detection.
  • different first synchronization signal blocks may be associated with the same second synchronization signal block, or may be associated with different second synchronization signal blocks.
  • each first synchronization signal block can be associated with two second synchronization signal blocks
  • the association relationship between the first synchronization signal block and the second synchronization signal block can be as shown in Table 1:
  • the time domain resource interval between the same first synchronization signal block and its associated second synchronization signal block may be the same or different, for example, T1 may be equal to T2, or T1 may not be equal to T2.
  • the synchronization signal blocks including the primary synchronization signal and/or the secondary synchronization signal can all be associated with the broadcast message.
  • the synchronization signal blocks including the primary synchronization signal and/or the secondary synchronization signal can all be associated with the broadcast message.
  • the terminal device can determine the access network equipment based on the detected primary synchronization signal and/or secondary synchronization signal Send the time domain resource corresponding to the broadcast message, and then demodulate the broadcast message carried on the time domain resource.
  • the terminal device first obtains the synchronization information of the access network device through the primary synchronization signal and the secondary synchronization signal, and then detects the broadcast message sent by the access network device based on the synchronization information. If the synchronization signal blocks including the primary synchronization signal and the secondary synchronization signal are associated with broadcast messages and some are not associated with broadcast messages, the terminal device may not send the broadcast message during the process of detecting the broadcast message after determining the synchronization information Detecting broadcast messages on time domain resources or erroneously combining broadcast messages, thereby increasing the power consumption of the terminal equipment and causing the broadcast messages to not be effectively and correctly demodulated.
  • the synchronization signal blocks including the primary synchronization signal and the secondary synchronization signal can all be associated with the broadcast message.
  • the associated broadcast messages are all broadcast messages included in the second synchronization signal block, or broadcast messages that the narrowband terminal device needs to receive.
  • the first synchronization signal block includes the primary synchronization signal and the secondary synchronization signal. Therefore, the first synchronization signal block is associated with a broadcast message.
  • the second synchronization signal block includes the primary synchronization signal and the secondary synchronization signal, the second synchronization signal block is also associated with a broadcast message.
  • the first synchronization signal block or the second synchronization signal block may not be associated with the broadcast message.
  • the broadcast message involved here may be a broadcast message that needs to be received by a narrowband terminal device.
  • the second synchronization signal block may not be associated with broadcast messages, which means that the second synchronization signal block may not be associated with broadcast messages in other synchronization signal blocks, and the second synchronization signal block itself still includes broadcast messages.
  • S203 The terminal device receives the second synchronization signal block sent by the access network device.
  • the terminal device may perform blind detection to implement receiving the second synchronization signal block sent by the access network device.
  • the terminal device may first receive the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, and synchronize with the access network device through the primary synchronization signal and the secondary synchronization signal. Then, the terminal device can receive the second synchronization signal block.
  • the terminal device receives the primary synchronization in the first synchronization signal block After the signal and the secondary synchronization signal, the time domain position of the second synchronization signal block can be determined according to the time domain resource interval between the first synchronization signal block and the second synchronization signal block and the time domain position of the first synchronization signal block, and The second synchronization signal block is received according to the time domain position of the second synchronization signal block.
  • the terminal device may also receive a broadcast message in a part of the frequency domain bandwidth in the first synchronization signal block from the access network device, for example, within the allowable range of the bandwidth.
  • the terminal device obtains the broadcast message according to the second synchronization signal block.
  • the terminal device may receive the physical broadcast channel and demodulate the physical broadcast channel to obtain the broadcast message.
  • the physical broadcast channel here may be obtained according to the second synchronization signal block, or may be obtained according to the first synchronization signal block and the second synchronization signal block.
  • the terminal device may obtain the configuration information of the access network device according to the broadcast message.
  • the idle state terminal device may also request to access the access network device according to the configuration information of the access network device.
  • the access network device can send the first synchronization signal block and the second synchronization signal block, and the frequency bandwidth of the broadcast message in the first synchronization signal block is greater than the frequency bandwidth of the broadcast message in the second synchronization signal block .
  • the narrowband terminal can receive the broadcast message in the second synchronization signal block, and obtain the configuration information of the access network device according to the broadcast message in the second synchronization signal block, and the broadband terminal can receive the broadcast message in the first synchronization signal block.
  • the broadcast message can also receive the broadcast message in the second synchronization signal block, so that the broadband terminal can obtain the configuration information of the access network device according to the broadcast message in the first synchronization signal block or the second synchronization signal block.
  • Both the terminal and the narrowband terminal can obtain the broadcast message sent by the access network equipment, so that both the broadband terminal and the narrowband terminal can obtain the configuration information of the access network equipment, ensuring that terminal equipment of different bandwidths, especially the narrowband terminal and the access network The reliability of data transmission between devices.
  • the second synchronization signal block includes a broadcast message and does not include the primary synchronization signal and the secondary synchronization signal.
  • FIG. 5 is a schematic structural diagram of a second synchronization signal block provided by this application.
  • the second synchronization signal block includes a broadcast message, and the frequency bandwidth of the broadcast message in the second synchronization signal block is smaller than the frequency bandwidth of the broadcast message in the first synchronization signal block.
  • the physical broadcast channel carrying broadcast messages is represented by PBCH.
  • the frequency bandwidth of the second synchronization signal block is smaller than the frequency bandwidth of the broadcast message in the first synchronization signal block.
  • the frequency bandwidth of the second synchronization signal block is smaller than the frequency bandwidth corresponding to 20 RBs.
  • the frequency bandwidth of the second synchronization signal block may be equal to the frequency bandwidth of the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block.
  • the frequency bandwidth of the second synchronization signal block may be the frequency bandwidth corresponding to 12 RBs.
  • the bandwidth capabilities of narrowband terminal devices can be unified, that is, the maximum frequency bandwidth capability of narrowband terminal devices can be 12 RBs.
  • the primary synchronization signal and secondary synchronization signal in the first synchronization signal block, and the broadcast message in the second synchronization signal block can be accessed to the system.
  • the time domain resources (the number of occupied OFDM symbols) and the frequency bandwidth occupied by the second synchronization signal block can be set according to actual needs, which is not specifically limited in this application.
  • Fig. 6 is a schematic flowchart of another communication method provided by this application. Referring to Figure 6, the method may include:
  • the terminal device obtains the primary synchronization signal and the secondary synchronization signal from the first synchronization signal block sent by the access network device.
  • the terminal device may perform blind detection to receive the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block sent by the access network device.
  • the terminal device may be a narrowband terminal.
  • the terminal device synchronizes with the access network device according to the primary synchronization signal and the secondary synchronization signal.
  • execution process of S602 can refer to the process of synchronizing the terminal device with the access network device through the primary synchronization signal and the secondary synchronization signal in the prior art, which will not be repeated here.
  • the terminal device may also obtain cell information, such as a cell identity, according to the primary synchronization signal and the secondary synchronization signal.
  • S603 The terminal device receives the second synchronization signal block.
  • the terminal device may perform blind detection to receive the second synchronization signal block sent by the access network device.
  • the terminal device obtains the broadcast message in the second synchronization signal block.
  • the terminal device may demodulate the physical broadcast channel that transmits the broadcast message to obtain the broadcast message.
  • the terminal device After the terminal device obtains the broadcast message, the terminal device can obtain the configuration information of the access network device according to the broadcast message.
  • the terminal device can synchronize with the access network device through the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, and obtain the broadcast message in the second synchronization signal block. , So that the terminal device can obtain the configuration information of the access network device, which improves the reliability of communication. Since the terminal device can use the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, the standard design complexity is reduced.
  • the second synchronization signal block does not include the primary synchronization signal and the secondary synchronization signal
  • the second synchronization signal block when the size of the time domain resource corresponding to the second synchronization signal block is the same as the size of the time domain resource corresponding to the first synchronization signal block, the second synchronization signal block
  • the broadcast message in can use more time domain resources to transmit, thereby ensuring the coverage performance of the broadcast message.
  • the configuration information of the access network device can be obtained through the method shown in the embodiment of FIG. 5.
  • the broadband terminal can also obtain configuration information of the access network device according to the first synchronization signal block.
  • the broadband terminal can synchronize with the access network device according to the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, and obtain the second synchronization signal block.
  • a broadcast message in a synchronization signal block, and the configuration information of the access network device is obtained according to the broadcast message.
  • the second synchronization signal block includes a broadcast message, a primary synchronization signal, and a secondary synchronization signal.
  • FIG. 7 is a schematic structural diagram of another second synchronization signal block provided by this application.
  • the second synchronization signal block includes a broadcast message, a primary synchronization signal, and a secondary synchronization signal.
  • the frequency bandwidth of the broadcast message in the second synchronization signal block is smaller than the frequency bandwidth of the broadcast message in the first synchronization signal block.
  • the broadcast message is represented by PBCH.
  • the information carried by the primary synchronization signal in the first synchronization signal block sent by the access network device in one cycle may be the same as the information carried by the primary synchronization signal in the second synchronization signal block.
  • the signal carried by the secondary synchronization signal in the first synchronization signal block sent by the access network device in one cycle may be the same as the information carried by the secondary synchronization signal in the second synchronization signal block.
  • the frequency bandwidth of the primary synchronization signal included in the second synchronization signal block is the same as the frequency bandwidth of the primary synchronization signal included in the first synchronization signal block
  • the frequency bandwidth of the secondary synchronization signal included in the second synchronization signal block is the same as
  • the frequency bandwidths of the secondary synchronization signals included in the first synchronization signal block are the same.
  • the second synchronization signal block occupies 4 OFDM symbols.
  • the second synchronization signal block occupies 12 RBs.
  • the primary synchronization signal in the second synchronization signal block occupies 12 RBs on the first OFDM symbol (the same RB occupied by the primary synchronization signal block in the first synchronization signal block in the embodiment of FIG. 3), and the secondary synchronization The signal occupies 12 RBs on the third OFDM symbol (the RB occupied by the secondary synchronization signal block in the first synchronization signal block in the embodiment of FIG. 3 is the same), and the broadcast message (or PBCH) occupies the second OFDM symbol and the first synchronization signal block. 12 RBs on three OFDM symbols.
  • the frequency bandwidth corresponding to the broadcast message in the second synchronization signal block is equal to the frequency bandwidth corresponding to the primary synchronization signal in the second synchronization signal block and the frequency bandwidth corresponding to the secondary synchronization signal in the second synchronization signal block. In this way, the signal detection complexity of the narrowband terminal access network equipment can be simplified.
  • the frequency bandwidth corresponding to the primary synchronization signal and the secondary synchronization signal in the second synchronization signal block is 12 RBs, respectively, the frequency bandwidth corresponding to the broadcast message in the second synchronization signal block is 12 RBs.
  • the second synchronization signal block since the frequency bandwidth of the main synchronization signal included in the second synchronization signal block is the same as the frequency bandwidth of the main synchronization signal included in the first synchronization signal block, the second synchronization signal block includes The frequency bandwidth of the auxiliary synchronization signal is the same as the frequency bandwidth of the auxiliary synchronization signal included in the first synchronization signal block, and the terminal device can detect the primary synchronization signal and the auxiliary synchronization signal of the first synchronization signal block on the same frequency, and detect the first synchronization signal block.
  • the primary synchronization signal and the secondary synchronization signal in the two synchronization signal blocks in this way, can reduce the bandwidth capability requirements of the terminal equipment and improve the synchronization detection performance of the terminal equipment.
  • the sequence of the main synchronization signal included in the second synchronization signal block and the sequence of the main synchronization signal included in the first synchronization signal block may be the same or different.
  • the sequence of the secondary synchronization signal included in the second synchronization signal block and the sequence of the secondary synchronization signal included in the first synchronization signal block may be the same or different.
  • the sequence of the secondary synchronization signal included in the second synchronization signal block is the same as that in the first synchronization signal block.
  • the sequence of the included secondary synchronization signal is the same, for terminal equipment that can use the synchronization signal (primary synchronization signal and secondary synchronization signal) included in the first synchronization signal block and the second synchronization signal block at the same time, the complexity of sequence detection is reduced. It can also reduce the complexity of standard design.
  • the same sequence may refer to the same type of sequence and the same element included in the sequence.
  • Different sequences may refer to different types of sequences or different elements included in the sequences.
  • FIG. 7 merely illustrates the structure of the second synchronization signal block and the amount of resources occupied by an example, and does not limit the structure of the second synchronization signal block and the amount of resources occupied.
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal in the second synchronization signal block can be changed.
  • the second synchronization signal block shown in FIGS. 8A-8D please refer to the second synchronization signal block shown in FIGS. 8A-8D.
  • FIG. 8A is a schematic structural diagram of another second synchronization signal block provided by this application.
  • FIG. 8B is a schematic structural diagram of another second synchronization signal block provided by this application.
  • FIG. 8C is a schematic structural diagram of still another second synchronization signal block provided by this application.
  • FIG. 8D is a schematic structural diagram of another second synchronization signal block provided by this application.
  • the second synchronization signal block includes a broadcast message, a primary synchronization signal and a secondary synchronization signal. In the time domain, the second synchronization signal block occupies 4 OFDM symbol. In the frequency domain, the first synchronization signal block occupies 12 RBs.
  • the broadcast message is represented by PBCH.
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block is the first time domain resource interval; the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block is For the second time domain resource interval, the first time domain resource interval and the second time domain resource interval are different.
  • the time domain resource interval between the primary synchronization signal and the secondary synchronization signal may be the number of OFDM symbols that differ between the start OFDM symbol occupied by the primary synchronization signal and the start OFDM symbol occupied by the secondary synchronization signal. number.
  • the time domain resource interval can be a positive number or a negative number.
  • the access network device sends the secondary synchronization signal first, and then the primary synchronization signal
  • the primary synchronization signal and the secondary synchronization signal The time domain resource interval between synchronization signals is a number less than zero.
  • the start OFDM symbol of the secondary synchronization signal is the same as the start OFDM symbol of the primary synchronization signal, the time domain resource interval between the primary synchronization signal and the secondary synchronization signal is zero.
  • the time domain resource interval between the primary synchronization signal and the secondary synchronization signal may be the number of OFDM symbols that differ between the start OFDM symbol occupied by the secondary synchronization signal and the start OFDM symbol occupied by the primary synchronization signal. number.
  • the time domain resource interval can be a positive number or a negative number.
  • the access network device sends the secondary synchronization signal first, and then the primary synchronization signal
  • the primary synchronization signal and the secondary synchronization signal The time domain resource interval between synchronization signals is a number greater than zero.
  • the start OFDM symbol of the secondary synchronization signal is the same as the start OFDM symbol of the primary synchronization signal, the time domain resource interval between the primary synchronization signal and the secondary synchronization signal is zero.
  • the time domain resource interval between the primary synchronization signal and the secondary synchronization signal is the difference between the start OFDM symbol occupied by the primary synchronization signal and the start OFDM symbol occupied by the secondary synchronization signal Take the number of OFDM symbols as an example for description.
  • the time domain resource interval between the primary synchronization signal and the secondary synchronization signal is the time between the start OFDM symbol of the primary synchronization signal and the start OFDM of the secondary synchronization signal.
  • the domain resource interval, the time domain resource interval of the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block is 2 OFDM symbols.
  • the primary synchronization signal occupies 12 RBs on the first OFDM symbol
  • the secondary synchronization signal occupies 12 RBs on the second OFDM symbol
  • the broadcast message (or PBCH) occupies the third OFDM symbol and the fourth OFDM symbol. 12 RBs on each OFDM symbol.
  • the access network device sends the primary synchronization signal first, and then the secondary synchronization signal, and there is a difference of 1 OFDM symbol between the primary synchronization signal and the secondary synchronization signal, therefore, the primary synchronization signal and the secondary synchronization signal in the second synchronization signal block
  • the time domain resource interval of the secondary synchronization signal is 1 OFDM symbol, which is different from the time domain resource interval (2 OFDM symbols) of the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block.
  • the primary synchronization signal occupies 12 RBs on the second OFDM symbol
  • the secondary synchronization signal occupies 12 RBs on the first OFDM symbol
  • the broadcast message (or PBCH) occupies the third and fourth OFDM symbols. 12 RBs on each OFDM symbol.
  • the primary synchronization signal occupies 12 RBs on the first OFDM symbol
  • the secondary synchronization signal occupies 12 RBs on the fourth OFDM symbol
  • the broadcast message (or PBCH) occupies the second OFDM symbol and the third OFDM symbol. 12 RBs on each OFDM symbol.
  • the access network device since the access network device sends the primary synchronization signal first, and then the secondary synchronization signal, and there is a difference of 3 OFDM symbols between the primary synchronization signal and the secondary synchronization signal, therefore, the primary synchronization signal and the secondary synchronization signal in the second synchronization signal block
  • the time domain resource interval of the secondary synchronization signal is 3 OFDM symbols, which is different from the time domain resource interval (2 OFDM symbols) of the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block.
  • the primary synchronization signal occupies 12 RBs on the fourth OFDM symbol
  • the secondary synchronization signal occupies 12 RBs on the first OFDM symbol
  • the broadcast message (or PBCH) occupies the second OFDM symbol and the third OFDM symbol. 12 RBs on each OFDM symbol.
  • the access network device sends the secondary synchronization signal first, and then the primary synchronization signal, and there is a difference of 3 OFDM symbols between the primary synchronization signal and the secondary synchronization signal, therefore, the primary synchronization signal and the primary synchronization signal in the second synchronization signal block
  • the time domain resource interval of the secondary synchronization signal is -3 OFDM symbols, which is different from the time domain resource interval (2 OFDM symbols) of the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block.
  • the second time domain resource interval between the primary synchronization signal and the secondary synchronization signal in the second synchronization signal block may also be other, which will not be listed here in this application.
  • the configuration information of the access network device is preferably obtained according to the broadcast message in the first synchronization signal block, which can enable the broadband terminal to have higher communication efficiency.
  • the configuration information of the access network device can only be obtained according to the broadcast message in the second synchronization signal block.
  • the terminal device can determine whether the primary synchronization signal is based on the time domain resource interval between the primary synchronization signal and the secondary synchronization signal.
  • the broadcast message in the synchronization signal block where the synchronization signal and the auxiliary synchronization signal are located obtains the configuration information of the access network device.
  • the terminal device may first receive the primary synchronization signal, and synchronize with the access network device according to the primary synchronization signal, for example, realize coarse synchronization with the access network device according to the primary synchronization signal, including Time synchronization and/or frequency synchronization.
  • the terminal device can accumulate the received information with the same primary synchronization signal transmission period. For example, the terminal device can use 5 milliseconds as the default period for detecting the primary synchronization signal, and merge the received information separated by 5 milliseconds.
  • the primary synchronization signal may be the primary synchronization signal included in the first synchronization signal block, or it may be the primary synchronization signal included in the second synchronization signal block.
  • the default transmission period of the secondary synchronization signal is 20 milliseconds, and the time position corresponding to the secondary synchronization signal in the first synchronization signal block is determined according to the relative position between the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, and combined with 20 The default period of milliseconds is to accumulate the received information at the time position corresponding to the determined secondary synchronization signal to determine whether the secondary synchronization signal is detected.
  • the default transmission period of the secondary synchronization signal is 5 milliseconds
  • the corresponding time of the secondary synchronization signal in the second synchronization signal block is determined according to the relative position between the primary synchronization signal and the secondary synchronization signal in the second synchronization signal block Position, combined with the default period of 5 milliseconds, accumulate the received information at the time position corresponding to the determined secondary synchronization signal to determine whether the secondary synchronization signal is detected.
  • the time domain resource interval between the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block is different from the time domain resource interval between the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block.
  • Different types of terminal devices such as broadband terminals and narrowband terminals
  • the position in the time domain is further detected, thereby avoiding extra power consumption and reducing the detection complexity.
  • the broadband terminal For a broadband terminal, if the broadband terminal determines that the primary synchronization signal and the secondary synchronization signal belong to the first synchronization signal block according to the time domain resource interval between the primary synchronization signal and the secondary synchronization signal, the broadband terminal receives the information in the first synchronization signal block. Broadcast news.
  • the broadband terminal determines that the primary synchronization signal and the secondary synchronization signal belong to the second synchronization signal block according to the time domain resource interval between the primary synchronization signal and the secondary synchronization signal, it may compare the primary synchronization signal and the secondary synchronization signal with The access network device is synchronized, but does not receive the broadcast message in the second synchronization signal block.
  • the broadband terminal may also receive the second synchronization signal block In this way, when the quality of the channel between the broadband terminal and the access network device deteriorates (for example, the broadband terminal enters the environment of the basement, tunnel, etc.), the broadcast message in the second synchronization signal block acquired in advance can be used,
  • Use narrowband terminal to maintain data transmission technology for example, multiple repeated transmission technology
  • to maintain data transmission with access network equipment without the need to re-establish narrowband data transmission links with access network equipment
  • reducing system overhead and broadband terminal Realize the complexity, and also contribute to the continuity of business transmission, to ensure the user experience.
  • the narrowband terminal For a narrowband terminal, if the narrowband terminal determines that the primary synchronization signal and the secondary synchronization signal belong to the second synchronization signal block according to the time domain resource interval between the primary synchronization signal and the secondary synchronization signal, the narrowband terminal receives the information in the second synchronization signal block. Broadcast news. If the narrowband terminal determines that the primary synchronization signal and the secondary synchronization signal belong to the first synchronization signal block according to the time domain resource interval between the primary synchronization signal and the secondary synchronization signal, it can communicate with the access network equipment based on the primary synchronization signal and the secondary synchronization signal. Synchronize, but do not receive the broadcast message in the first synchronization signal.
  • the terminal device can pass The received primary synchronization signal and secondary synchronization signal determine which synchronization signal block (first synchronization signal block or second synchronization signal block) the received primary synchronization signal and secondary synchronization signal belong to, so that the terminal device does not need to perform unnecessary
  • the broadcast message detection can reduce power consumption and ensure effective data transmission. Take a narrowband terminal device as an example.
  • the narrowband terminal can detect the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, due to the limited bandwidth capability, the narrowband terminal cannot receive the broadcast message included in the first synchronization signal block.
  • the narrowband terminal device cannot determine whether the received primary synchronization signal block and secondary synchronization signal block belong to the first synchronization signal block or the second synchronization signal block. Then, after the narrowband terminal receives the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block , Unnecessary detection is performed on the broadcast message in the first synchronization signal block.
  • FIGS. 8A to 8D only illustrate the structure of the second synchronization signal block and the amount of resources occupied by examples, and do not limit the structure of the second synchronization signal block and the amount of resources occupied.
  • the sequence corresponding to the primary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the primary synchronization signal included in the second synchronization signal block, and/or, The sequence corresponding to the secondary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the secondary synchronization signal included in the second synchronization signal block.
  • the terminal device can determine the type of synchronization signal block (that is, the first synchronization signal block or the second synchronization signal) where the detected synchronization signal (primary synchronization signal and auxiliary synchronization signal) is located based on the detected primary synchronization signal and/or secondary synchronization signal.
  • the second synchronization signal block can avoid unnecessary power consumption of the terminal device when detecting broadcast messages and reduce the complexity of terminal device detection.
  • the terminal device may determine the received sequence according to the detected primary synchronization signal.
  • the type of the sync signal block where the sync signal is located If the sequence corresponding to the secondary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the secondary synchronization signal block included in the second synchronization signal block, the terminal device can determine the received synchronization signal according to the detected secondary synchronization signal The type of sync signal block in which it is located.
  • sequence corresponding to the primary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the primary synchronization signal block included in the second synchronization signal block, and the sequence corresponding to the secondary synchronization signal included in the first synchronization signal block is different from the first synchronization signal block
  • the sequences corresponding to the secondary synchronization signal blocks included in the two synchronization signal blocks are different, and the terminal device can determine the type of the synchronization signal block where the received synchronization signal is located according to the detected primary synchronization signal and/or the secondary synchronization signal.
  • the frequency domain positions of the first synchronization signal block and the second synchronization signal block are different.
  • the terminal equipment can determine the type of synchronization signal block (first synchronization signal block or second synchronization signal block) according to the frequency domain position of the synchronization signal. Synchronization signal block), thereby avoiding unnecessary power consumption of the terminal device when detecting broadcast messages and reducing the complexity of terminal device detection.
  • the frequency domain position may be expressed as an absolute frequency value.
  • the frequency domain position of the synchronization signal block can be indicated by a synchronization raster.
  • the synchronization raster corresponding to the first synchronization signal block is different from the synchronization raster corresponding to the second synchronization signal block.
  • terminal devices usually detect synchronization signal blocks according to a preset synchronization grid. If the synchronization grids corresponding to the first synchronization signal block and the second synchronization signal block are different, different types of terminal devices (narrowband terminals and broadband terminals) ) Can detect synchronization signal blocks according to their respective preset synchronization grids.
  • the synchronization grid for broadband terminals is defined as N*1200kHz+M*50kHz, where N and M are positive integers, and the synchronization grid for narrowband terminals indicates The frequency position is staggered from the frequency position indicated by the synchronization grid of the broadband terminal.
  • the synchronization grid of the narrowband terminal can be defined as N*1200kHz+M*50kHz+Offset kHz, where Offset is not equal to M'*50, and/or Not equal to N'*1200.
  • the second synchronization signal block also includes the primary synchronization signal and the secondary synchronization signal
  • the primary synchronization signal and the secondary synchronization signal are the same as the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block
  • the primary and secondary synchronization signals are included
  • the synchronization raster setting between the first synchronization signal block and the second synchronization signal block is different, which can be effective This reduces the power consumption of the terminal equipment to detect broadcast messages and reduces the complexity of detection.
  • the frequency bandwidth of the primary synchronization signal included in the first synchronization signal block is the same as the frequency bandwidth of the primary synchronization signal block included in the second synchronization signal block, and the sequence corresponding to the primary synchronization signal included in the first synchronization signal block The sequence corresponding to the primary synchronization signal included in the second synchronization signal block is the same; the frequency bandwidth of the secondary synchronization signal included in the first synchronization signal block is the same as the frequency bandwidth of the secondary synchronization signal block included in the second synchronization signal block.
  • the sequence corresponding to the secondary synchronization signal included in one synchronization signal block is the same as the sequence corresponding to the secondary synchronization signal included in the second synchronization signal block; the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block , which is different from the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block.
  • the synchronization detection performance of the terminal device can be improved, the sequence detection complexity and the standard design complexity can be reduced, and the terminal device can also determine the type of the synchronization signal block described in the synchronization signal according to the frequency domain position of the synchronization signal (first synchronization Signal block or second synchronization signal).
  • the frequency bandwidth of the secondary synchronization signal included in the first synchronization signal block is the same as that of the second synchronization signal Whether the frequency bandwidth of the auxiliary synchronization signal block included in the block is the same, whether the sequence corresponding to the auxiliary synchronization signal included in the first synchronization signal block and the sequence corresponding to the auxiliary synchronization signal included in the second synchronization signal block are the same, and whether the first synchronization Whether the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the signal block is the same as the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block, the above multiple situations can be arbitrary The combination is not specifically limited in this application.
  • the structure of the second synchronization signal block (for example, the second synchronization signal block includes only broadcast channels, or the second synchronization signal block includes broadcast channels, and the primary synchronization signal or the secondary synchronization signal At least one of) may be pre-configured, such as a standard protocol specification, or notified by the access network device to the terminal device.
  • the time domain resources and frequency domain resources occupied by the second synchronization signal block may also be pre-configured, such as standard protocol specifications, or notified by the access network device to the terminal device.
  • the second synchronization signal block associated with the first synchronization signal block may also be pre-configured, such as a standard protocol specification, or notified by the access network device to the terminal device.
  • the access network device can use broadcast signaling to notify the terminal device or terminal device-specific signaling.
  • the signaling may be Radio Resource Control (RRC) signaling or
  • RRC Radio Resource Control
  • the physical layer signaling for example, carries the signaling sent through the physical layer control channel, and may also be the media access control (MAC) signaling, which is not specifically limited in this application.
  • MAC media access control
  • FIG. 9 is a schematic flowchart of another communication method provided by this application. Referring to Figure 9, the method may include:
  • the terminal device receives the primary synchronization signal and the secondary synchronization signal sent by the access network device.
  • the terminal device may perform blind detection to receive the primary synchronization signal and the secondary synchronization signal sent by the access network device.
  • the primary synchronization signal block and the secondary synchronization signal block received by the terminal device may belong to the first synchronization signal block or the second synchronization signal block.
  • the terminal device obtains the time domain resource interval of the primary synchronization signal and the secondary synchronization signal.
  • the terminal device may determine the time domain resource interval between the primary synchronization signal and the secondary synchronization signal according to the time when the primary synchronization signal is received and the time when the secondary synchronization signal is received.
  • S903 The terminal device judges whether the time domain resource interval between the primary synchronization signal and the secondary synchronization signal corresponds to the type of the terminal device.
  • the type of terminal equipment includes a broadband terminal type and a narrowband terminal type.
  • the broadband terminal device corresponds to the time domain resource interval between the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block
  • the narrowband terminal corresponds to the time domain resource interval between the primary synchronization signal and the secondary synchronization signal in the second synchronization signal block. Resource interval.
  • the correspondence between the type of the terminal device and the time domain resource interval (the time domain resource interval between the primary synchronization signal and the secondary synchronization signal) can be preset.
  • Type of terminal equipment Time domain resource interval between primary synchronization signal and secondary synchronization signal Broadband terminal type 2 OFDM symbols
  • the terminal device synchronizes with the access network device according to the primary synchronization signal and the secondary synchronization signal.
  • execution process of S905 can refer to the process of synchronizing the terminal device with the access network device through the primary synchronization signal and the secondary synchronization signal in the prior art, which will not be repeated here.
  • the terminal device may also obtain cell information, such as a cell identity, according to the primary synchronization signal and the secondary synchronization signal.
  • the terminal device receives the broadcast message in the synchronization signal block where the primary synchronization signal and the secondary synchronization signal are located.
  • the terminal device is a broadband terminal
  • the primary synchronization signal and the secondary synchronization signal received by the terminal device belong to the first synchronization signal block, and the terminal device receives the broadcast message in the first synchronization signal block.
  • the terminal device is a narrowband terminal
  • the primary synchronization signal and the secondary synchronization signal received by the terminal device belong to the second synchronization signal block, and the terminal device receives the broadcast message in the second synchronization signal block.
  • the terminal device may obtain the configuration information of the access network device according to the broadcast message.
  • the terminal device does not receive the broadcast message in the synchronization signal block where the primary synchronization signal and the secondary synchronization signal are located.
  • the terminal device if the terminal device is a broadband terminal, and the primary synchronization signal and the secondary synchronization signal received by the terminal device belong to the second synchronization signal block, the terminal device does not receive the broadcast message in the second synchronization signal block.
  • the terminal device if the terminal device is a narrowband terminal, and the primary synchronization signal and the secondary synchronization signal received by the terminal device belong to the first synchronization signal block, the terminal device does not receive the broadcast message in the first synchronization signal block.
  • the narrowband terminal device After the narrowband terminal device receives the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, the broadcast message in the first synchronization signal block cannot be detected by the narrowband terminal, Since the narrowband terminal can determine not to receive the broadcast message in the first synchronization signal block through the time domain resource interval between the received primary synchronization signal and the secondary synchronization signal, the waste of power consumption of the narrowband terminal is avoided.
  • the broadband terminal device After the broadband terminal device receives the primary synchronization signal and the secondary synchronization signal in the second synchronization signal block, the broadband terminal cannot correctly receive the second synchronization signal block with the frequency bandwidth corresponding to the broadcast message in the first synchronization signal block Because the broadband terminal can determine not to receive the broadcast message in the second synchronization signal block based on the time domain resource interval between the received primary synchronization signal and the secondary synchronization signal, it avoids wasting the power consumption of the broadband terminal.
  • the second synchronization signal block includes the broadcast message and the primary synchronization signal.
  • FIG. 10 is a schematic structural diagram of another second synchronization signal block provided by this application.
  • the second synchronization signal block includes a broadcast message and a primary synchronization signal, and the frequency bandwidth of the broadcast message in the second synchronization signal block is smaller than the frequency bandwidth of the broadcast message in the first synchronization signal block.
  • the broadcast message is represented by the PBCH.
  • the frequency bandwidth of the main synchronization signal included in the second synchronization signal is the same as the frequency bandwidth of the main synchronization signal included in the first synchronization signal block.
  • the terminal device can detect the primary synchronization signal in the first synchronization signal block and the primary synchronization signal in the second synchronization signal block on the same frequency, thereby improving the synchronization detection performance of the terminal device.
  • the sequence of the primary synchronization signal block included in the second synchronization signal block is the same as the sequence of the primary synchronization signal block included in the first synchronization signal block.
  • the terminal device can combine the primary synchronization signal in the first synchronization signal block and the primary synchronization signal in the second synchronization signal block, thereby increasing the probability that the terminal device detects the primary synchronization signal block.
  • the terminal device may receive the main synchronization signal in the first synchronization signal block, and may also receive the main synchronization signal in the second synchronization signal block.
  • the terminal device may receive the secondary synchronization signal in the first synchronization signal block.
  • the narrowband terminal After synchronizing with the access network device according to the primary synchronization signal and the secondary synchronization signal, the narrowband terminal can obtain the configuration information of the access network device according to the broadcast message in the second synchronization signal block.
  • the narrowband terminal may receive the primary synchronization signal at a default period of 5 milliseconds, and implement the combination, for example ,
  • the narrowband terminal can accumulate the energy in the 5 millisecond sliding window to receive the master synchronization signal.
  • the narrowband terminal After the narrowband terminal receives the primary synchronization signal, it can receive the secondary synchronization signal at a period of 20 milliseconds and realize the combination.
  • the narrowband terminal After the narrowband terminal receives the primary synchronization signal, it cannot determine which 5 millisecond time window within the 20 millisecond time window the received primary synchronization signal belongs to. Therefore, the narrowband terminal cannot determine the position of the secondary synchronization signal.
  • the narrowband terminal can communicate with the secondary synchronization signal.
  • Multiple assumptions are made on the location of the synchronization signal, and they are combined one by one based on multiple assumptions.
  • the narrowband terminal can determine the location of the secondary synchronization signal based on the combined results of multiple assumptions (such as the energy result), and then realize the connection with the network equipment Synchronize between and obtain cell information.
  • the sequence corresponding to the primary synchronization signal in the first synchronization signal block and the primary synchronization signal in the second synchronization signal block may be different. Further alternatively, taking FIG.
  • the time domain resource interval between the primary synchronization signal included in different second synchronization signal blocks and the secondary synchronization signal or primary synchronization signal included in the first synchronization signal block is different, so it can also be configured
  • the sequences corresponding to the primary synchronization signals included in different second synchronization signal blocks within 20ms are different, so that the terminal device can uniquely determine the timing of the secondary synchronization signal included in the first synchronization signal block based on the detected primary synchronization signal.
  • the location of the domain resource so as to realize the detection of the auxiliary synchronization signal.
  • the broadband terminal After synchronizing with the access network device according to the primary synchronization signal and the secondary synchronization signal, the broadband terminal preferentially obtains the configuration information of the access network device according to the broadcast message in the first synchronization signal block. If the broadband terminal fails to detect the first synchronization signal block, the broadband terminal may also obtain the configuration information of the access network device according to the broadcast message in the second synchronization signal block.
  • the configuration information of the access network device obtained according to the broadcast message in the first synchronization signal block may also be referred to as the configuration information of the access network device associated with the first synchronization signal block
  • Is different from the configuration information of the access network device also referred to as the configuration information of the access network device associated with the second synchronization signal block
  • the configuration information of the access network equipment associated with the first synchronization signal block is suitable for broadband terminal equipment
  • the configuration information of the access network equipment associated with the second synchronization signal block is suitable for narrowband terminals and broadband terminals.
  • the configuration information of the access network device associated with the first synchronization signal block is compared with that of the access network device associated with the second synchronization signal block.
  • the configuration information can make the communication efficiency of the broadband terminal higher.
  • the frequency bandwidth corresponding to the broadcast message in the second synchronization signal block is equal to the frequency band block corresponding to the main synchronization signal in the second synchronization signal block.
  • the signal detection complexity for the narrowband terminal to obtain the configuration information of the access network device can be simplified.
  • the frequency bandwidth corresponding to the primary synchronization signal in the second synchronization signal block is 12 RBs
  • the frequency bandwidth corresponding to the broadcast message in the second synchronization signal block is 12 RBs.
  • FIG. 11 is a schematic flowchart of another communication method provided by this application. Referring to Figure 11, the method may include:
  • the terminal device obtains the primary synchronization signal from the second synchronization signal block sent by the access network device.
  • the terminal device may also obtain the primary synchronization signal in the first synchronization signal block sent by the access network device.
  • the terminal device may be a narrowband terminal.
  • the terminal device obtains the secondary synchronization signal from the first synchronization signal block sent by the access network device.
  • S1103 The terminal device synchronizes with the access network device according to the received primary synchronization signal and secondary synchronization signal.
  • execution process of S1103 can refer to the process of synchronizing the terminal device with the access network device through the primary synchronization signal and the secondary synchronization signal in the prior art, which will not be repeated here.
  • the terminal device may also obtain cell information, such as a cell identity, according to the primary synchronization signal and the secondary synchronization signal.
  • the terminal device obtains the broadcast message in the second synchronization signal block sent by the access network device.
  • the terminal device After the terminal device obtains the broadcast message, the terminal device can obtain the configuration information of the access network device according to the broadcast message.
  • the narrowband terminal can synchronize with the access network device through the secondary synchronization signal in the first synchronization signal block and the primary synchronization signal in the second synchronization signal block, and in the second synchronization signal block.
  • the broadcast message is acquired in the synchronization signal block, so that the narrowband terminal can acquire the configuration information of the access network device, which improves the reliability of communication.
  • the configuration information of the access network device can be obtained through the method shown in the embodiment of FIG. 11.
  • the broadband terminal can also obtain configuration information of the access network device according to the first synchronization signal block.
  • the broadband terminal can synchronize with the access network device according to the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, and obtain the second synchronization signal block.
  • a broadcast message in a synchronization signal block, and the configuration information of the access network device is obtained according to the broadcast message.
  • the second synchronization signal block includes the broadcast message and the secondary synchronization signal.
  • FIG. 12 is a schematic structural diagram of another second synchronization signal block provided by this application.
  • the second synchronization signal block includes a broadcast message and a secondary synchronization signal, and the frequency bandwidth of the broadcast message in the second synchronization signal block is smaller than the frequency bandwidth of the broadcast message in the first synchronization signal block.
  • the broadcast message is represented by the PBCH.
  • the frequency bandwidth of the auxiliary synchronization signal included in the second synchronization signal is the same as the frequency bandwidth of the auxiliary synchronization signal included in the first synchronization signal block.
  • the terminal device can detect the secondary synchronization signal in the first synchronization signal block and the secondary synchronization signal in the second synchronization signal block on the same frequency, thereby improving the synchronization detection performance of the terminal device.
  • the sequence of the secondary synchronization signal block included in the second synchronization signal block is the same as the sequence of the secondary synchronization signal block included in the first synchronization signal block.
  • the terminal device can combine the secondary synchronization signal in the first synchronization signal block and the secondary synchronization signal in the second synchronization signal block, thereby increasing the probability that the terminal device detects the secondary synchronization signal block.
  • the terminal device can combine and detect the auxiliary synchronization signals of the access network device in one cycle,
  • the terminal device may receive the primary synchronization signal in the first synchronization signal block.
  • the terminal device may receive the auxiliary synchronization signal in the first synchronization signal block, and may also receive the auxiliary synchronization signal block in the second synchronization signal block.
  • the narrowband terminal After synchronizing with the access network device according to the primary synchronization signal and the secondary synchronization signal, the narrowband terminal can obtain the configuration information of the access network device according to the broadcast message in the second synchronization signal block.
  • the broadband terminal After synchronizing with the access network device according to the primary synchronization signal and the secondary synchronization signal, the broadband terminal preferentially obtains the configuration information of the access network device according to the broadcast message in the first synchronization signal block. If the broadband terminal fails to detect the first synchronization signal block, the broadband terminal may also obtain the configuration information of the access network device according to the broadcast message in the second synchronization signal block.
  • the frequency bandwidth corresponding to the broadcast message in the second synchronization signal block is equal to the frequency band block corresponding to the secondary synchronization signal in the second synchronization signal block.
  • the frequency bandwidth corresponding to the secondary synchronization signal in the second synchronization signal block is 12 RBs
  • the frequency bandwidth corresponding to the broadcast message in the second synchronization signal block is 12 RBs.
  • FIG. 13 is a schematic flowchart of another communication method provided by this application. Referring to Figure 13, the method may include:
  • the terminal device obtains the primary synchronization signal from the first synchronization signal block sent by the access network device.
  • the terminal device may be a narrowband terminal.
  • the terminal device obtains the secondary synchronization signal from the second synchronization signal block sent by the access network device.
  • the terminal device may also obtain the secondary synchronization signal in the first synchronization signal block sent by the access network device.
  • the terminal device can determine the secondary synchronization signal in the second synchronization signal block according to the time domain resource interval between the primary synchronization signal in the first synchronization signal block and the secondary synchronization signal in the second synchronization signal block, and the detected primary synchronization signal.
  • the time domain resource interval can be pre-configured, such as standard protocol specifications.
  • the second synchronization signal block associated with the first synchronization signal block or the secondary synchronization signal in the second synchronization signal block can also be pre-configured. It can be expressed that, according to the detected first synchronization signal block, the terminal device can determine the time domain resource location and/or the frequency domain resource location where the second synchronization signal block associated with it is located.
  • the terminal device synchronizes with the access network device according to the received primary synchronization signal and secondary synchronization signal.
  • execution process of S1303 can refer to the process of synchronizing the terminal device with the access network device through the primary synchronization signal and the secondary synchronization signal in the prior art, which will not be repeated here.
  • the terminal device may also obtain cell information, such as a cell identity, according to the primary synchronization signal and the secondary synchronization signal.
  • the terminal device obtains the broadcast message in the second synchronization signal block sent by the access network device.
  • the terminal device After the terminal device obtains the broadcast message, the terminal device can obtain the configuration information of the access network device according to the broadcast message.
  • the narrowband terminal can synchronize with the access network device through the primary synchronization signal in the first synchronization signal block and the secondary synchronization signal in the second synchronization signal block, and in the second synchronization signal block.
  • the broadcast message is acquired in the synchronization signal block, so that the narrowband terminal can acquire the configuration information of the access network device, which improves the reliability of communication.
  • the configuration information of the access network device can be obtained through the method shown in the embodiment of FIG. 13.
  • the broadband terminal can also obtain configuration information of the access network device according to the first synchronization signal block.
  • the broadband terminal can synchronize with the access network device according to the primary synchronization signal and the secondary synchronization signal in the first synchronization signal block, and obtain the second synchronization signal block.
  • a broadcast message in a synchronization signal block, and the configuration information of the access network device is obtained according to the broadcast message.
  • FIG. 14 is a schematic structural diagram of a communication device provided by this application.
  • the communication device 10 may include:
  • the receiving module 11 is configured to receive the second synchronization signal block sent by the access network device;
  • the processing module 12 is configured to obtain a broadcast message according to the second synchronization signal block
  • the frequency bandwidth of the broadcast message in the first synchronization signal block is greater than the frequency bandwidth of the broadcast message in the second synchronization signal block, and the first synchronization signal block corresponds to the access network device.
  • the receiving module 11 can execute S203 in the embodiment in FIG. 2, S601 and S603 in the embodiment in FIG. 6, S901, S905 and S906 in the embodiment in FIG. 9, and S1101, S1102 and S1104 in the embodiment in FIG. , And S1301, S1302, and S1304 in Figure 13.
  • the processing module 12 may execute S204 in the embodiment in FIG. 2, S602 and S604 in the embodiment in FIG. 6, S902-S904 in the embodiment in FIG. 9, S1103 in the embodiment in FIG. 11, and S1103 in the embodiment in FIG. S1303.
  • the processing module 12 may control the receiving module 11 to receive data.
  • the first synchronization signal block further includes a primary synchronization signal and a secondary synchronization signal
  • the second synchronization signal block further includes at least one of a primary synchronization signal or a secondary synchronization signal.
  • the second synchronization signal block includes a primary synchronization signal and a secondary synchronization signal
  • the frequency bandwidth of the primary synchronization signal included in the second synchronization signal is the same as that included in the first synchronization signal block.
  • the frequency bandwidth of the primary synchronization signal is the same
  • the frequency bandwidth of the secondary synchronization signal included in the second synchronization signal is the same as the frequency bandwidth of the secondary synchronization signal included in the first synchronization signal block.
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block is the first time domain resource interval
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block is a second time domain resource interval, wherein the first time domain resource interval and the second time domain resource interval are different .
  • the first synchronization signal block and the second synchronization signal block satisfy at least one of the following:
  • the second synchronization signal block includes a primary synchronization signal, and the primary synchronization signal included in the second synchronization signal block is the same as the sequence of the primary synchronization signal included in the first synchronization signal block;
  • the second synchronization signal block includes a secondary synchronization signal, and the secondary synchronization signal included in the second synchronization signal block is the same as the sequence of the secondary synchronization signal included in the first synchronization signal block;
  • the second synchronization signal block includes a primary synchronization signal, and the sequence corresponding to the primary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the primary synchronization signal included in the second synchronization signal block;
  • the second synchronization signal block includes an auxiliary synchronization signal, and the sequence corresponding to the auxiliary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the auxiliary synchronization signal included in the second synchronization signal block.
  • the first synchronization signal block is associated with at least one second synchronization signal block, and the at least one second synchronization signal block includes the second synchronization signal block.
  • the time domain resource interval between the first synchronization signal block and the at least one second synchronization signal block is a predefined or preconfigured time domain resource interval.
  • FIG. 15 is a schematic structural diagram of another communication device provided by this application.
  • the communication device 20 may include:
  • the processing module 21 is configured to generate a first synchronization signal block and a second synchronization signal block, where the frequency bandwidth of the broadcast message in the first synchronization signal block is greater than the frequency bandwidth of the broadcast message in the second synchronization signal block;
  • the sending module 22 is configured to send the first synchronization signal block and the second synchronization signal block.
  • processing module 21 may execute S201 in the embodiment of FIG. 2.
  • the sending module 22 may execute S202 in the embodiment of FIG. 2.
  • the first synchronization signal block further includes a primary synchronization signal and a secondary synchronization signal
  • the second synchronization signal block further includes at least one of a primary synchronization signal or a secondary synchronization signal.
  • the second synchronization signal block includes a primary synchronization signal and a secondary synchronization signal
  • the frequency bandwidth of the primary synchronization signal included in the second synchronization signal is the same as that included in the first synchronization signal block.
  • the frequency bandwidth of the primary synchronization signal is the same
  • the frequency bandwidth of the secondary synchronization signal included in the second synchronization signal is the same as the frequency bandwidth of the secondary synchronization signal included in the first synchronization signal block.
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the first synchronization signal block is the first time domain resource interval
  • the time domain resource interval of the primary synchronization signal and the secondary synchronization signal included in the second synchronization signal block is a second time domain resource interval, wherein the first time domain resource interval and the second time domain resource interval are different .
  • the first synchronization signal block and the second synchronization signal block satisfy at least one of the following:
  • the second synchronization signal block includes a primary synchronization signal, and the primary synchronization signal included in the second synchronization signal block is the same as the sequence of the primary synchronization signal included in the first synchronization signal block;
  • the second synchronization signal block includes a secondary synchronization signal, and the secondary synchronization signal included in the second synchronization signal block is the same as the sequence of the secondary synchronization signal included in the first synchronization signal block;
  • the second synchronization signal block includes a primary synchronization signal, and the sequence corresponding to the primary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the primary synchronization signal included in the second synchronization signal block;
  • the second synchronization signal block includes an auxiliary synchronization signal, and the sequence corresponding to the auxiliary synchronization signal included in the first synchronization signal block is different from the sequence corresponding to the auxiliary synchronization signal included in the second synchronization signal block.
  • the first synchronization signal block is associated with at least one second synchronization signal block, and the at least one second synchronization signal includes the second synchronization signal block.
  • the number of second synchronization signal blocks associated with each first synchronization signal block is the same.
  • the time domain resource interval between the first synchronization signal block and the at least one second synchronization signal block is a predefined or preconfigured time domain resource interval.
  • processing module in the above communication device may be implemented as a processor, the receiving module may be implemented as a receiver, and the sending module may be implemented as a transmitter.
  • FIG. 16 is a schematic diagram of the hardware structure of a communication device provided by this application.
  • the communication device 30 includes: a memory 31, a processor 32, and a receiver 33, where the memory 31 and the processor 32 communicate; for example, the memory 31, the processor 32, and the receiver 33 may pass through a communication bus 34 communication, the memory 31 is used to store a computer program, and the processor 32 executes the computer program to implement the aforementioned communication method.
  • the communication device 30 may further include a transmitter.
  • the processor 32 and/or the receiver 33 shown in the present application can execute S202-S203 in the embodiment shown in FIG. 2 and the methods shown in the embodiments shown in FIG. 6, FIG. 9, FIG. 11, and FIG. .
  • the processor 32 shown in the present application may implement the function of the processing module 12 in the embodiment of FIG. 14, and the receiver 33 may implement the function of the receiving module 11 in the embodiment of FIG. 14, and details are not described herein again.
  • the foregoing processor may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), application specific integrated circuits (ASICs) )Wait.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps in the embodiment of the communication method disclosed in this application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • FIG. 17 is a schematic diagram of the hardware structure of a communication device provided by this application.
  • the communication device 40 includes: a memory 41, a processor 42, and a transmitter 43.
  • the memory 41 and the processor 42 communicate with each other; for example, the memory 41, the processor 42 and the transmitter 43 may pass through a communication bus. 44 communication, the memory 41 is used to store a computer program, and the processor 42 executes the computer program to implement the above communication method.
  • the communication device 40 may further include a receiver.
  • processor 42 and/or the transmitter 43 shown in this application may execute S201-S202 in the embodiment shown in FIG. 2.
  • the processor 42 shown in the present application may implement the function of the processing module 21 in the embodiment of FIG. 15, and the transmitter 43 may implement the function of the sending module 22 in the embodiment of FIG. 15, and details are not described herein again.
  • the foregoing processor may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), application specific integrated circuits (ASICs) )Wait.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps in the embodiment of the communication method disclosed in this application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the present application provides a storage medium, the storage medium is used to store a computer program, and the computer program is used to implement the communication method described in the foregoing embodiment.
  • All or part of the steps in the foregoing method embodiments can be implemented by a program instructing relevant hardware.
  • the aforementioned program can be stored in a readable memory.
  • the program executes the steps including the foregoing method embodiments; and the foregoing memory (storage medium) includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, Solid state drives, magnetic tapes (English: magnetic tape), floppy disks (English: floppy disk), optical discs (English: optical disc) and any combination thereof.
  • each flow and/or block in the flowchart and/or block diagram and a combination of the flow and/or block in the flowchart and/or block diagram may be implemented by computer program instructions.
  • These computer program instructions can be provided to the processing unit of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing equipment are used
  • a device that implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on the computer or other programmable device to generate computer-implemented processing, which is executed on the computer or other programmable device
  • the instructions provide steps for implementing the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.
  • the term “including” and its variations may refer to non-limiting inclusion; the term “or” and its variations may refer to “and/or”.
  • the terms “first”, “second”, etc. in this application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence.
  • “plurality” means two or more.
  • “And/or” describes the relationship of the related objects, indicating that there can be three relationships, for example, A and/or B, which can indicate: there are three conditions: A exists alone, A and B exist simultaneously, and B exists alone.
  • the character “/” generally indicates that the related object is a "or” relationship.

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Abstract

本申请提供一种通信方法、装置及设备,该方法包括:终端设备接收接入网设备发送的第二同步信号块;所述终端设备根据所述第二同步信号块获取广播消息;其中,所述第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽,所述第一同步信号块对应于所述接入网设备。提高了终端设备与接入网设备通信的可靠性。

Description

通信方法、装置及设备
本申请要求于2019年01月18日提交中国专利局、申请号为2019101089265、申请名称为“通信方法、装置及设备”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,尤其涉及一种通信方法、装置及设备。
背景技术
目前,在无线通信***中,终端设备可以获取接入网设备的配置信息,并根据配置信息接入到接入网设备。
在现有技术中,接入网设备周期性发送同步信号块(Synchronization Signal Block,SSB),同步信号块中包括主同步信号、辅同步信号和广播消息,广播消息中包括接入网设备的配置信息。终端设备可以通过主同步信号和辅同步信号与接入网设备同步,并根据广播消息中的配置信息接入到接入网设备。然而,同步信号块中的广播消息占用的频率带宽通常较大,而窄带终端的频率带宽通常有限,使得窄带终端无法接收接入网设备发送的广播消息,使得窄带终端无法获取接入网设备的配置信息,导致窄带终端设备无法与接入网设备进行正常通信。
发明内容
本申请提供一种通信方法、装置及设备,提高了终端设备与接入网设备通信的可靠性。
本申请实施例提供一种通信方法,该方法包括:终端设备接收接入网设备发送的第二同步信号块;终端设备根据第二同步信号块获取广播消息;其中,第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽,第一同步信号块对应于接入网设备。
第一同步信号对应于接入网设备可以是指,第一同步信号由接入网设备发送。
在上述过程中,由于第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽,因此,窄带终端可以接收第二同步信号块中的广播消息,并根据第二同步信号块中的广播消息获取接入网设备的配置信息,宽带终端可以接收第一同步信号块中的广播消息,也可以接收第二同步信号块中的广播消息,使得宽带终端可以根据第一同步信号块或者第二同步信号块中的广播消息获取接入网设备的配置信息,这样,可以使得宽带终端和窄带终端均可以获取到接入网设备发送的广播消息,进而使得宽带终端和窄带终端均可以获取接入网设备的配置信息,使得宽带终端和窄带终端均可以与接入网设备进行可靠的数据传输,提高了数据传输的可靠性。
在一种可能的实施方式中,第一同步信号块还包括主同步信号和辅同步信号;以及第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
在上述过程中,由于第一同步信号块和第二同步信号块中均包括主同步信号和辅同步 信号,使得终端设备可以在第一同步信号块或者第二同步信号块中检测主同步信号和辅同步信号,使得终端设备可以快速检测到主同步信号和辅同步信号。
在一种可能的实施方式中,第二同步信号块包括主同步信号和辅同步信号,第二同步信号中包括的主同步信号的频率带宽与第一同步信号块中包括的主同步信号的频率带宽相同,第二同步信号中包括的辅同步信号的频率带宽与第一同步信号块中包括的辅同步信号的频率带宽相同。这样,终端设备可以在相同的频率上检测第一同步信号块的主同步信号和辅同步信号,以及检测第二同步信号块中的主同步信号和辅同步信号,进而可以降低对终端设备的带宽能力要求,提高终端设备的同步检测性能。
在一种可能的实施方式中,第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,第一时域资源间隔和第二时域资源间隔不同。
在上述过程中,由于第一时域资源间隔和第二时域资源间隔不同,因此,在终端设备检测到主同步信号和辅同步信号之后,终端设备可以根据主同步信号和辅同步信号之间的时域资源间隔确定同步信号(主同步信号和辅同步信号)所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
在一种可能的实施方式中,第一同步信号块和第二同步信号块满足如下中的至少一种:
第二同步信号块包括主同步信号,第二同步信号块中包括的主同步信号与第一同步信号块中包括的主同步信号的序列相同。对于可以同时使用第一同步信号块和第二同步信号块中包括的主同步信号的终端设备,降低了序列检测复杂度,并且还可以降低标准设计复杂度。
第二同步信号块包括辅同步信号,第二同步信号块中包括的辅同步信号与第一同步信号块中包括的辅同步信号的序列相同。对于可以同时使用第一同步信号块和第二同步信号块中包括的辅同步信号的终端设备,降低了序列检测复杂度,并且还可以降低标准设计复杂度。
第二同步信号块包括主同步信号,第一同步信号块中包括的主同步信号对应的序列,与第二同步信号块中包括的主同步信号对应的序列不同。这样,终端设备根据检测到的主同步信号可以确定该主同步信号所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
第二同步信号块包括辅同步信号,第一同步信号块中包括的辅同步信号对应的序列,与第二同步信号块中包括的辅同步信号对应的序列不同。这样,终端设备根据检测到的主同步信号可以确定该主同步信号所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
在一种可能的实施方式中,在一个周期内,第一同步信号块关联至少一个第二同步信号块,至少一个第二同步信号块包括第二同步信号块。
在上述过程中,由于第一同步信号块关联至少一个第二同步信号块,因此,终端设备可以根据检测到的第一同步信号块确定第二同步信号块的时域位置。例如,对于窄带终端, 在检测到第一同步信号块中的同步信号(主同步信号和/或辅同步信号)之后,可以根据第一同步信号块的时域位置快速确定得到第二同步信号块,并在第二同步信号块中检测到广播消息,并根据第二同步信号块中的广播消息获取接入网设备的配置参数。
在一种可能的实施方式中,第一同步信号块与至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
在上述过程中,由于第一同步信号块与至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔,因此,终端设备在检测到第一同步信号块之后,可以根据第一同步信号块的时域位置和预先定义或者预先配置的时域资源间隔确定第二同步信号块的时域资源位置。
在一种可能的实施方式中,在一个周期内,每个第一同步信号块关联的第二同步信号块的个数相同。这样,可以降低终端设备的合并检测复杂度。例如,第二同步信号块中只包括广播消息,通过第二同步信号块接入接入网设备的终端设备,需要先通过第一同步信号块中的主同步信号和辅同步信号获取同步信息,如果在一个周期内,每个第一同步信号块关联的第二同步信号块的个数不同,那么上述终端设备还需要对第一同步信号块所关联的第二同步信号块的个数进行假设,并以此进行合并检测,这样会增加终端设备接入***的复杂度。相反,如果每个第一同步信号块关联的第二同步信号块的个数相同,则终端设备对于可以合并检测的第二同步信号块的个数是确定的,进而降低了合并检测复杂度。
在一种可能的实施方式中,第一同步信号块和第二同步信号块占用的时域资源的大小相同。例如,第一同步信号块和第二同步信号块占用的OFDM符号的个数相同。
在一种可能的实施方式中,所述第一同步信号块和所述第二同步信号块占用的频域资源不同。这样,在终端设备检测到同步信号(主同步信号和辅同步信号)之后,终端设备可以根据同步信号的频域位置确定同步信号所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
在一种可能的实施方式中,第一同步信号块对应的同步栅格与第二同步信号块对应的同步栅格不同。这样,在终端设备检测到同步信号(主同步信号和辅同步信号)之后,终端设备可以根据同步信号的对应的同步栅格确定同步信号所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
在一种可能的实施方式中,第二同步信号块中包括广播消息,且不包括主同步信号和辅同步信号。对于窄带终端,可以在第一同步信号块中检测主同步信号和辅同步信号,并在第二同步信号块中检测广播消息,使得窄带终端可以获取广播消息,进而可以获取接入网设备的配置信息,保证了窄带终端与接入网设备通信的可靠性。对于宽带终端,可以在第一同步信号块中检测主同步信号和辅同步信号块,并在第二同步信号块或者第二同步信号块中检测广播消息,使得宽带终端在与接入网设备之间的信道之间较差的场景下,宽带终端依然可以根据第二同步信号块中的广播消息,与接入网设备保持数据传输,而不需要再重新与接入网设备建立窄带数据传输链接,降低了***开销以及宽带终端的实现复杂度,并且也有助于业务的连续性传输,保证了用户体验。
在一种可能的实施方式中,第二同步信号块中包括广播消息、主同步信号和辅同步信 号。对于窄带终端,可以在第一同步信号块和/或第二同步信号块中检测主同步信号和/或辅同步信号,并在第二同步信号块中检测广播消息,提高了窄带终端检测到同步信号(主同步信号和辅同步信号)的效率,且使得窄带终端可以获取广播消息,进而可以获取接入网设备的配置信息,保证了窄带终端与接入网设备通信的可靠性。对于宽带终端,可以在第一同步信号块和/或第二同步信号块中检测主同步信号和/或辅同步信号,并在第一同步信号块或者第二同步信号块中检测广播消息,提高了宽带终端检测到同步信号(主同步信号和辅同步信号)的效率,且使得宽带终端在与接入网设备之间的信道之间较差的场景下,宽带终端依然可以根据第二同步信号块中的广播消息,与接入网设备保持数据传输,而不需要再重新与接入网设备建立窄带数据传输链接,降低了***开销以及宽带终端的实现复杂度,并且也有助于业务的连续性传输,保证了用户体验。
可选的,在第一同步信号块和/或第二同步信号块中检测主同步信号和/或辅同步信号可以包括:在第一同步信号块中检测主同步信号和辅同步信号,或者,在第一同步信号块中检测主同步信号和辅同步信号,或者,在第一同步信号块中检测主同步信号,在第二同步信号块中检测辅同步信号,或者,在第二同步信号块中检测主同步信号,在第一同步信号块中检测辅同步信号。
在一种可能的实施方式中,第二同步信号块中包括广播消息和主同步信号。对于窄带终端,可以在第一同步信号块或者第二同步信号块中检测主同步信号,在第一同步信号块中检测辅同步信号,在第二同步信号块中检测广播消息,提高了窄带终端检测到主同步信号的效率,且使得窄带终端可以获取广播消息,进而可以获取接入网设备的配置信息,保证了窄带终端与接入网设备通信的可靠性。对于宽带终端,可以在第一同步信号块或者第二同步信号块中检测主同步信号,在第一同步信号块中检测辅同步信号,在第一同步信号块或者第二同步信号块中检测广播消息,提高了宽带终端检测到主同步信号的效率,且使得宽带终端在与接入网设备之间的信道之间较差的场景下,宽带终端依然可以根据第二同步信号块中的广播消息,与接入网设备保持数据传输,而不需要再重新与接入网设备建立窄带数据传输链接,降低了***开销以及宽带终端的实现复杂度,并且也有助于业务的连续性传输,保证了用户体验。
在一种可能的实施方式中,第二同步信号块中包括广播消息和辅同步信号。对于窄带终端,可以在第一同步信号块中检测主同步信号,在第一同步信号块或者第二同步信号块中检测辅同步信号,在第二同步信号块中检测广播消息,提高了窄带终端检测到主同步信号的效率,且使得窄带终端可以获取广播消息,进而可以获取接入网设备的配置信息,保证了窄带终端与接入网设备通信的可靠性。对于宽带终端,可以在第一同步信号块中检测主同步信号,在第一同步信号块或者第二同步信号块中检测辅同步信号,在第一同步信号块或者第二同步信号块中检测广播消息,提高了宽带终端检测到辅同步信号的效率,且使得宽带终端在与接入网设备之间的信道之间较差的场景下,宽带终端依然可以根据第二同步信号块中的广播消息,与接入网设备保持数据传输,而不需要再重新与接入网设备建立窄带数据传输链接,降低了***开销以及宽带终端的实现复杂度,并且也有助于业务的连续性传输,保证了用户体验。
第二方面,本申请提供一种数据处理方法,该方法包括:接入网设备生成第一同步信号块和第二同步信号块,第一同步信号块中的广播消息的频率带宽大于第二同步信号块中 的广播消息的频率带宽;接入网设备发送第一同步信号块和第二同步信号块。
在上述过程中,接入网设备可以发送第一同步信号块和第二同步信号块,且第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽,因此,窄带终端可以接收第二同步信号块中的广播消息,并根据第二同步信号块中的广播消息获取接入网设备的配置信息,宽带终端可以接收第一同步信号块中的广播消息,也可以接收第二同步信号块中的广播消息,使得宽带终端可以根据第一同步信号块或者第二同步信号块中的广播消息获取接入网设备的配置信息,这样,可以使得宽带终端和窄带终端均可以获取到接入网设备发送的广播消息,进而使得宽带终端和窄带终端均可以获取接入网设备的配置信息,使得宽带终端和窄带终端均可以与接入网设备进行可靠的数据传输,提高了数据传输的可靠性。
在一种可能的实施方式中,第一同步信号块还包括主同步信号和辅同步信号;以及第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
在上述过程中,由于第一同步信号块和第二同步信号块中均包括主同步信号和辅同步信号,使得终端设备可以在第一同步信号块或者第二同步信号块中检测主同步信号和辅同步信号,使得终端设备可以快速检测到主同步信号和辅同步信号。
在一种可能的实施方式中,第二同步信号块包括主同步信号和辅同步信号,第二同步信号中包括的主同步信号的频率带宽与第一同步信号块中包括的主同步信号的频率带宽相同,第二同步信号中包括的辅同步信号的频率带宽与第一同步信号块中包括的辅同步信号的频率带宽相同。这样,终端设备可以在相同的频率上检测第一同步信号块的主同步信号和辅同步信号,以及检测第二同步信号块中的主同步信号和辅同步信号,进而可以降低对终端设备的带宽能力要求,提高终端设备的同步检测性能。
在一种可能的实施方式中,第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,第一时域资源间隔和第二时域资源间隔不同。
在上述过程中,由于第一时域资源间隔和第二时域资源间隔不同,因此,在终端设备检测到主同步信号和辅同步信号之后,终端设备可以根据主同步信号和辅同步信号之间的时域资源间隔确定同步信号(主同步信号和辅同步信号)所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
在一种可能的实施方式中,第一同步信号块和第二同步信号块满足如下中的至少一种:
第二同步信号块包括主同步信号,第二同步信号块中包括的主同步信号与第一同步信号块中包括的主同步信号的序列相同。对于可以同时使用第一同步信号块和第二同步信号块中包括的主同步信号的终端设备,降低了序列检测复杂度,并且还可以降低标准设计复杂度。
第二同步信号块包括辅同步信号,第二同步信号块中包括的辅同步信号与第一同步信号块中包括的辅同步信号的序列相同。对于可以同时使用第一同步信号块和第二同步信号块中包括的辅同步信号的终端设备,降低了序列检测复杂度,并且还可以降低标准设计复杂度。
第二同步信号块包括主同步信号,第一同步信号块中包括的主同步信号对应的序列, 与第二同步信号块中包括的主同步信号对应的序列不同。这样,终端设备根据检测到的主同步信号可以确定该主同步信号所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
第二同步信号块包括辅同步信号,第一同步信号块中包括的辅同步信号对应的序列,与第二同步信号块中包括的辅同步信号对应的序列不同。这样,终端设备根据检测到的主同步信号可以确定该主同步信号所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
在一种可能的实施方式中,在一个周期内,第一同步信号块关联至少一个第二同步信号块,至少一个第二同步信号包括第二同步信号块。
在上述过程中,由于第一同步信号块关联至少一个第二同步信号块,因此,终端设备可以根据检测到的第一同步信号块确定第二同步信号块的时域位置。例如,对于窄带终端,在检测到第一同步信号块中的同步信号(主同步信号和/或辅同步信号)之后,可以根据第一同步信号块的时域位置快速确定得到第二同步信号块,并在第二同步信号块中检测到广播消息,并根据第二同步信号块中的广播消息获取接入网设备的配置参数。
在一种可能的实施方式中,在一个周期内,每个第一同步信号块关联的第二同步信号块的个数相同。这样,可以降低终端设备的合并检测复杂度。例如,第二同步信号块中只包括广播消息,通过第二同步信号块接入接入网设备的终端设备,需要先通过第一同步信号块中的主同步信号和辅同步信号获取同步信息,如果在一个周期内,每个第一同步信号块关联的第二同步信号块的个数不同,那么上述终端设备还需要对第一同步信号块所关联的第二同步信号块的个数进行假设,并以此进行合并检测,这样会增加终端设备接入***的复杂度。相反,如果每个第一同步信号块关联的第二同步信号块的个数相同,则终端设备对于可以合并检测的第二同步信号块的个数是确定的,进而降低了合并检测复杂度。
在一种可能的实施方式中,第一同步信号块与至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
在上述过程中,由于第一同步信号块与至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔,因此,终端设备在检测到第一同步信号块之后,可以根据第一同步信号块的时域位置和预先定义或者预先配置的时域资源间隔确定第二同步信号块的时域资源位置。
在一种可能的实施方式中,第一同步信号块和第二同步信号块占用的时域资源的大小相同。例如,第一同步信号块和第二同步信号块占用的OFDM符号的个数相同。
在一种可能的实施方式中,所述第一同步信号块和所述第二同步信号块占用的频域资源不同。这样,在终端设备检测到同步信号(主同步信号和辅同步信号)之后,终端设备可以根据同步信号的频域位置确定同步信号所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
在一种可能的实施方式中,第一同步信号块对应的同步栅格与第二同步信号块对应的同步栅格不同。这样,在终端设备检测到同步信号(主同步信号和辅同步信号)之后,终 端设备可以根据同步信号的对应的同步栅格确定同步信号所属的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
在一种可能的实施方式中,接入网设备以时分复用的方式发送第一同步信号块和第二同步信号块。
在一种可能的实施方式中,接入网设备以频分复用的方式发送第一同步信号块和第二同步信号块。
第三方面,本申请提供一种通信装置,包括:
接收模块,用于接收接入网设备发送的第二同步信号块;
处理模块,用于根据所述第二同步信号块获取广播消息;
其中,所述第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽,所述第一同步信号块对应于所述接入网设备。
在一种可能的实施方式中,所述第一同步信号块还包括主同步信号和辅同步信号;以及
所述第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
在一种可能的实施方式中,所述第二同步信号块包括主同步信号和辅同步信号,所述第二同步信号中包括的主同步信号的频率带宽与所述第一同步信号块中包括的主同步信号的频率带宽相同,所述第二同步信号中包括的辅同步信号的频率带宽与所述第一同步信号块中包括的辅同步信号的频率带宽相同。
在一种可能的实施方式中,所述第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;
所述第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,所述第一时域资源间隔和所述第二时域资源间隔不同。
在一种可能的实施方式中,所述第一同步信号块和所述第二同步信号块满足如下中的至少一种:
所述第二同步信号块包括主同步信号,所述第二同步信号块中包括的主同步信号与所述第一同步信号块中包括的主同步信号的序列相同;
所述第二同步信号块包括辅同步信号,所述第二同步信号块中包括的辅同步信号与所述第一同步信号块中包括的辅同步信号的序列相同;
所述第二同步信号块包括主同步信号,所述第一同步信号块中包括的主同步信号对应的序列,与所述第二同步信号块中包括的主同步信号对应的序列不同;
所述第二同步信号块包括辅同步信号,所述第一同步信号块中包括的辅同步信号对应的序列,与所述第二同步信号块中包括的辅同步信号对应的序列不同。
在一种可能的实施方式中,在一个周期内,所述第一同步信号块关联至少一个第二同步信号块,所述至少一个第二同步信号块包括所述第二同步信号块。
在一种可能的实施方式中,所述第一同步信号块与所述至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
第四方面,本申请提供一种通信装置,包括:
处理模块,用于生成第一同步信号块和第二同步信号块,所述第一同步信号块中的广 播消息的频率带宽大于所述第二同步信号块中的广播消息的频率带宽;
发送模块,用于发送所述第一同步信号块和所述第二同步信号块。
在一种可能的实施方式中,所述第一同步信号块还包括主同步信号和辅同步信号;以及
所述第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
在一种可能的实施方式中,所述第二同步信号块包括主同步信号和辅同步信号,所述第二同步信号中包括的主同步信号的频率带宽与所述第一同步信号块中包括的主同步信号的频率带宽相同,所述第二同步信号中包括的辅同步信号的频率带宽与所述第一同步信号块中包括的辅同步信号的频率带宽相同。
在一种可能的实施方式中,所述第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;
所述第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,所述第一时域资源间隔和所述第二时域资源间隔不同。
在一种可能的实施方式中,所述第一同步信号块和所述第二同步信号块满足如下中的至少一种:
所述第二同步信号块包括主同步信号,所述第二同步信号块中包括的主同步信号与所述第一同步信号块中包括的主同步信号的序列相同;
所述第二同步信号块包括辅同步信号,所述第二同步信号块中包括的辅同步信号与所述第一同步信号块中包括的辅同步信号的序列相同;
所述第二同步信号块包括主同步信号,所述第一同步信号块中包括的主同步信号对应的序列,与所述第二同步信号块中包括的主同步信号对应的序列不同;
所述第二同步信号块包括辅同步信号,所述第一同步信号块中包括的辅同步信号对应的序列,与所述第二同步信号块中包括的辅同步信号对应的序列不同。
在一种可能的实施方式中,在一个周期内,所述第一同步信号块关联至少一个第二同步信号块,所述至少一个第二同步信号包括所述第二同步信号块。
在一种可能的实施方式中,在所述一个周期内,每个第一同步信号块关联的第二同步信号块的个数相同。
在一种可能的实施方式中,所述第一同步信号块与所述至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
第五方面,本申请提供一种通信装置,包括存储器和处理器,所述处理器执行所述存储器中的程序指令,用于实现第一方面任一项所述的通信方法。
第六方面,本申请提供一种通信装置,包括存储器和处理器,所述处理器执行所述存储器中的程序指令,用于实现第二方面任一项所述的通信方法。
第七方面,本申请提供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序被计算机或处理器执行时用于实现第一方面任一项所述的通信方法。
第八方面,本申请提供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序被计算机或处理器执行时用于实现第二方面任一项所述的通信方法。
本申请提供的通信方法、装置及设备,接入网设备可以发送第一同步信号块和第二同步信号块,第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的 频率带宽。在通信过程中,窄带终端可以接收第二同步信号块中的广播消息,并根据第二同步信号块中的广播消息获取接入网设备的配置信息,宽带终端可以接收第一同步信号块中的广播消息,也可以接收第二同步信号块中的广播消息,使得宽带终端可以根据第一同步信号块或者第二同步信号块中的广播消息获取接入网设备的配置信息,这样,可以使得宽带终端和窄带终端均可以获取到接入网设备发送的广播消息,进而使得宽带终端和窄带终端均可以获取接入网设备的配置信息,保证了不同带宽的终端设备特别是窄带终端与接入网设备之间的数据传输的可靠性。
附图说明
图1为本申请提供的通信***的架构图;
图2为本申请提供的通信方法的示意图;
图3为本申请提供的第一同步信号块的结构示意图;
图4为本申请提供的发送第一同步信号块和第二同步信号块的过程示意图;
图5为本申请提供的一种第二同步信号块的结构示意图;
图6为本申请提供的另一种通信方法的流程示意图;
图7为本申请提供的另一种第二同步信号块的结构示意图;
图8A为本申请提供的又一种第二同步信号块的结构示意图;
图8B为本申请提供的另一种第二同步信号块的结构示意图;
图8C为本申请提供的再一种第二同步信号块的结构示意图;
图8D为本申请提供的又一种第二同步信号块的结构示意图;
图9为本申请提供的另一种通信方法的流程示意图;
图10为本申请提供的另一种第二同步信号块的结构示意图;
图11为本申请提供的另一种通信方法的流程示意图;
图12为本申请提供的又一种第二同步信号块的结构示意图;
图13为本申请提供的另一种通信方法的流程示意图;
图14为本申请提供的通信装置的结构示意图;
图15为本申请提供的通信装置的结构示意图;
图16为本申请提供的一种通信装置的硬件结构示意图;
图17为本申请提供的一种通信装置的硬件结构示意图。
具体实施方式
本申请所示的技术方案可以应用于第五代移动通信技术(The 5th Generation mobile communication technology,简称5G)***,5G***还可以称为第五代移动通信技术新无线(New Radio,NR)***。也可以应用于长期演进(Long Term Evolution,LTE)***,例如,LTE通信***中的车辆到所有(vehicle to X,V2X)***、设备到设备((Device to Device,D2D)***、机器型通信(Machine Type Communication,MTC)***等,还可以应用于通用移动通信***(Universal Mobile Telecommunications System,UMTS)陆地无线接入网(UMTS Terrestrial Radio Access Network,UTRAN)***,或者全球移动通信***(Global System for Mobile Communication,GSM)/增强型数据速率GSM演进(Enhanced  Data Rate for GSM Evolution,EDGE)***的无线接入网(GSM EDGE Radio Access Network,GERAN)架构。本申请所示的技术方案还可以应用于其它通信***,例如公共陆地移动网络(Public Land Mobile Network,PLMN)***、5G之后的通信***等,本申请对此不作限定。
本申请涉及的通信***中包括终端设备,终端设备(terminal device)包括但不限于移动台(Mobile Station,MS)、移动终端(Mobile Terminal,MT)、移动电话(Mobile Telephone,MT)、手机(handset)及便携设备(portable equipment)等,该终端设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网进行通信。例如,终端设备可以是移动电话(或称为“蜂窝”电话)、具有无线通信功能的计算机等,终端设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置或设备。
可选的,从终端设备的带宽能力上划分,本申请涉及的终端设备可以包括宽带终端设备(下文简称宽带终端)和窄带终端设备(下文简称窄带终端)。
可选的,窄带终端的最大频率带宽不大于宽带终端的最小频率带宽。
在本申请中,最大频率带宽、最小频率带宽可以分别理解为终端与接入网设备进行数据传输时,该数据传输所占用的最大频率带宽、最小频率带宽。这里的数据传输,包括控制、业务数据传输,例如同步信号传输、广播信道传输、***消息传输、单播业务和广播业务数据传输等。
例如,当窄带终端为窄带物联网(Narrow Band Internet of Things,NB-IoT)***的终端设备(下文简称NB-IoT终端),宽带终端为LTE***或者NR***中的终端设备时,可以认为窄带终端的最大频率带宽不大于宽带终端的最小频率带宽。NB-IoT终端的频率带宽通常为1个资源块(Resource Block,RB),一个RB包括12个子载波,当子载波间隔为15kHz时,则NB-IoT终端的频率带宽为180kHz,若加上保护频率带宽,则NB-IoT设备的频率带宽为200kHz,即,窄带终端的最大频率带宽为200kHz。另一方面,LTE***中的主同步信号块((Primary Synchronization Signal,PSS)和辅同步信号块(Secondary Synchronization Signal,SSS)所占的频率资源分别为6个RB,一个RB包括12个子载波,当子载波间隔为15kHz时,PSS和SSS所占的频率带宽分别为1.08MHz,LTE***中的终端设备(下文简称LTE终端)具备接收PSS和SSS的能力,因此,LTE终端的最小频率带宽为1.08MHz,若加上保护频率带宽,则LTE终端的最小频率带宽1.44MHz。由上可知,当窄带终端为NB-IoT终端,宽带终端为LTE终端时,窄带终端的最大频率带宽小于宽带终端的最小频率带宽。
这里需要说明的是,一个RB包括12个子载波,本申请实施例中涉及的RB数量可以替换为子载波数量。例如20个RB可以替换为240个子载波。
NR***中的(Synchronization Signal Block,SSB)所占的频率资源分别为20个RB,一个RB包括12个子载波,当子载波间隔为15kHz时,SSB所占的频率带宽分别为3.6MHz,NR***中的终端设备(下文简称NR终端)具备接收SSB的能力,因此,NR终端的最小频率带宽为3.6MHz。由上可知,当窄带终端为NB-IoT终端,宽带终端为NR终端时,窄带终端的最大频率带宽小于宽带终端的最小频率带宽。又例如,LTE***下的MTC终端,当与接入网设备进行数据传输时,所能支持的最大数据传输频率带宽为6个RB,即当窄带终端为MTC终端,宽带终端为LTE增强宽带(Enhanced Mobile Broadband,eMBB)或 NR eMBB终端时,窄带终端的最大频率带宽分别等于或小于宽带终端的最小频率带宽。
可选的,窄带终端的最小频率带宽小于宽带终端的最小频率带宽。
在通信过程中,终端设备与接入网设备建立连接之前,终端设备先接收接入网设备发送的同步信道和广播信道,为了使得终端设备可以接收到接入网设备发送的同步信道和广播信道,终端设备的最小频率带宽需要大于或等于接入网设备发送的同步信号和广播信道对应的频率带宽。为了便于描述,可以直接将接入网设备发送的同步信号和广播信道对应的频率带宽理解为如果想要接入此接入网设备,终端设备所需具备的最小频率带宽,即终端设备的最小频率带宽。需要说明的是,接入网设备发送的同步信号和广播信道对应的频率带宽,可以理解为,接入网设备发送的同步信号和广播信道所映射到的频率资源对应的频率带宽,如上所述,对于LTE***而言,接入网设备发送的同步信号和广播信道对应的频率带宽可以理解为6个RB,对于NR***而言,可以理解为20个RB。由于宽带终端接收的接入网设备发送的同步信道和广播信道的频率带宽,一般而言大于窄带终端接收的接入网设备发送的同步信道和广播信道,因此,可以认为窄带终端的最小频率带宽小于宽带终端的最小频率带宽。例如NB-IoT终端设备(窄带终端)接收到的接入网设备发送的同步信道和广播信道的频率带宽为1个RB,而eMBB终端接收到的接入网设备发送的同步信道和广播信道的频率带宽为6个RB(对应LTE***)或20个RB(对应LTE***)。
可选的,在本申请中,窄带终端需要通过覆盖增强(Coverage Enhancement,CE)技术与接入网设备保持正常的数据通信,而宽带终端设备即使不通过CE技术,也可以与接入网设备保持正常的数据通信,CE技术包括但不限于数据重复传输、功率提升等技术。或者,如果宽带终端设备在某些场景(例如,宽带终端所处环境的信号质量差)下,也需要通过数据重复传输和接入网设备保持正常的数据通信,那么,窄带终端设备与接入网设备保持数据通信所需要的最大重复次数,要小于宽带终端设备与接入网保持数据通信所需要的最大重复次数。
可选的,在本申请中,窄带终端还可以理解为带宽受限(Bandwidth Limited,BL)的终端。
本申请涉及的通信***中包括接入网设备,接入网设备可以是5G通信***中的gNB或者传输和接收点(transmission reception point,TRP)、微基站等,还可以是LTE***中的演进型基站(Evolutional Node B,eNB或eNodeB),或者,或者接入网设备可以为中继站、接入点、车载设备、可穿戴设备以及未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备,或者在其他多种技术融合的网络中,或者在其他各种演进网络中的基站等。
图1为本申请提供的通信***的架构图。请参见图1,在通信***中包括终端设备101和接入网设备102。
终端设备101和接入网设备102的介绍可以参见上述实施例,此处不再进行赘述。
在通信过程中,终端设备101可以获取接入网设备发送(例如广播)的同步信号,例如主同步信号和辅同步信号,终端设备可以根据主同步信号和辅同步信号与接入网设备102实现同步(例如时间同步、频率同步)。在终端设备101与接入网设备102实现同步之后,终端设备101还可以接收接入网设备102发送的广播消息,例如承载在物理广播信道中的信息或者***消息(System Information,SI),并对广播消息进行正确的解调,广 播消息中包括了接入网设备102的配置信息,例如带宽配置、子载波间隔配置、随机接入信道(Random Access CHannel,RACH)配置信息等,终端设备101可以在广播消息中获取接入网设备的配置信息。
在本申请中,接入网设备102可以发送第一同步信号块和第二同步信号块,第一同步信号块中包括主同步信号、辅同步信号和广播消息,第二同步信号块中包括广播消息,且第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽。在通信过程中,窄带终端可以接收第二同步信号块中的广播消息,可选地,窄带终端还可以根据第二同步信号块中的广播消息获取接入网设备的配置信息,宽带终端可以接收第一同步信号块中的广播消息,也可以接收第二同步信号块中的广播消息,使得宽带终端可以根据第一同步信号块或者第二同步信号块中的广播消息获取接入网设备的配置信息,这样,可以使得宽带终端和窄带终端均可以获取到接入网设备发送的广播消息,进而使得宽带终端和窄带终端均可以获取接入网设备的配置信息,提高了通信的可靠性。
需要说明的是,图1只是以示例的形式示意一种本申请所适用的通信***的架构图,并非对本申请所适用的通信***的架构的限定。
下面,通过具体实施例对本申请所示的技术方案进行详细说明。需要说明的是,下面几个具体实施例可以独立,也可以相互结合,对于相同或相似的内容,在不同的实施例中不再进行重复说明。另外,本申请实施例中涉及“可选的”方案均可以与实施例中在前的任一种可选方案或者设计叠加实现。在没有特殊说明的情况下,本申请实施例中涉及的“终端设备”包括窄带终端和宽带终端,即,终端设备可以为窄带终端,也可以为宽带终端。
图2为本申请提供的通信方法的示意图。请参见图2,该方法可以包括:
S201、接入网设备生成第一同步信号块和第二同步信号块。
其中,第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽。
可选的,第一同步信号块可以包括主同步信号、辅同步信号和广播消息。其中,所述主同步信号和辅同步信号用于使得终端设备与接入网设备进行同步。
可选的,接入网设备通过广播信道发送广播消息。在终端设备与接入网设备同步之后,终端设备可以对接入网设备发送的广播消息进行解调,以获取得到接入网设备的配置信息。其中,所述广播信道为物理广播信道(PBCH)。
可选的,广播消息中包括接入网设备为终端设备提供的配置信息。例如,配置信息可以包括带宽配置、子载波间隔配置、RACH配置等。
第一同步信号块可以为接入网设备在现有技术中发送的同步信号块,即,第一同步信号块中的广播消息所占的频率带宽通常大于窄带终端的最大频率带宽,导致窄带终端无法接收到接入网设备发送的第一同步信号块中的广播消息。
一种可选的设计中,所述第二同步信号块可以仅包括广播消息。这里的仅包括是指不包括主同步信号和辅同步信号。在所述第二同步信号块仅包括广播消息的场景下,所述第二同步信号块可以替换为第二广播信道或者第二物理广播信道。
可选的,窄带终端的最大频率带宽等于或大于第一同步信号块中主同步信号的频率带宽、以及辅同步信号的频率带宽。相应的,窄带终端可以接收到第一同步信号块中的主同步信号和辅同步信号。
例如,在通信***为NR***时,第一同步信号块的结构可以如图3所示。
图3为本申请提供的第一同步信号块的结构示意图。请参见图3,第一同步信号块包括主同步信号(PSS)、辅同步信号(SSS)和广播消息,其中,广播消息通过物理广播信道(Physical Broadcast Channel,PBCH)传输。
在时域上,第一同步信号块占用4个正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)符号。在频域上,第一同步信号块占用20个RB。其中,主同步信号占用第一个OFDM符号上的12个RB,辅同步信号占用第三个OFDM符号上的12个RB,广播消息(或者PBCH)占用第二个OFDM符号上的20个RB、第三个OFDM符号上的8个RB、以及第四个OFDM符号上的20个RB。
当第一同步信号块的结构如图3所示,终端设备的频率带宽需要大于或等于20个RB对应的频率带宽时,终端设备才可以通过图3所示的第一同步信号块接入NR***中的接入网设备。需要说明的是,在本申请实施例中,终端设备的频率带宽还可以表示为,终端设备与接入网设备通信时所具有的频率带宽能力,频率带宽能力又可以表示为该终端设备与接入网设备之间数据传输时(包括发送和接收),该数据传输所对应的传输带宽在频率带宽能力对应的带宽之内。例如,一个终端设备的频率带宽能力为20个RB,则表示该终端设备与接入网设备通信时,可以接收接入网设备发送的带宽等于或者小于20个RB的数据,或者,向接入网设备发送带宽等于或小于20个RB的数据。
可选的,第二同步信号块在时域上占用至少一个OFDM符号,当第二同步信号块在时域上占用的OFDM符号的个数大于1时,则第二同步信号块在时域上占用的OFDM符号是连续的。例如,假设第二同步信号块在时域上占用3个OFDM符号,则该3个OFDM符号在时域上连续。
进一步,第二同步信号块中的广播消息的频率带宽小于第一同步信号块中的广播消息的频率带宽。可选的,所述第二同步信号块中的广播消息的频率带宽小于20个RB,或者,小于240个子载波。可以理解,第二同步信号块用于窄带终端设备,因此频率带宽小于所述第一同步信号块的频率带宽,即小于240个子载波或者20个RB。进一步可选的,所述第二同步信号块的频率带宽可以为一个固定值,或者,预先定义或者设置的值。例如,假设第一同步信号块如图3所示,则第二同步信号块的频率带宽小于20个RB,当子载波间隔为15kHz时,则第二同步信号块的频率带宽小于3.6MHz。
可选的,第二同步信号块中的广播消息占用的频率带宽小于或等于窄带终端的最小频率带宽,以使窄带终端可以接收到第二同步信号块中的广播消息,或者说,窄带终端设备的频率带宽能力大于或等于第二同步信号块中包括的广播消息对应的频率带宽,或者说,第二同步信号块中的广播消息占用的频率带宽小于或等于窄带终端的最大频率带宽。
可选的,第二同步信号块中的广播消息占用的时域资源大小可以与第一同步信号块占用的时域资源大小相同。可选地,时域资源大小可以用OFDM符号个数表示。例如,当第一同步信号块占用4个OFDM符号时,第二同步信号块也可以占用4个OFDM符号,该4个OFDM符号均用于传输第二同步信号块中的广播消息。一般而言,广播消息是承载在广播信道中或者物理广播信道中,所以上例也可以理解为,该4个OFDM符号均用于传输第二同步信号块中包括的广播信道。
可选的,第二同步信号块中的广播消息占用的时域资源大小可以与第一同步信号块占 用的时域资源大小不同。可选地,时域资源大小可以用OFDM符号个数表示。例如,当第一同步信号块占用4个OFDM符号时,仅包括广播消息的第二同步信号块可以占用2个、3个或者4个OFDM符号,甚至大于4个符号。
可选的,第二同步信号块占用的时域资源大小与第一同步信号块占用的时域资源大小可以相同,也可以不同。例如,时域资源大小用OFDM符号个数表示,如果第一同步信号块占用4个OFDM符号,则第二同步信号块占用的OFDM符号个数可以等于4,也可以不等于4。
在实际应用过程中,可以根据实际需要设置第二同步信号块中的广播消息占用的时域资源大小。
可选的,接入网设备可以通过时分复用(Time Division Multiplexing,TDM)的方式发送第一同步信号块和第二同步信号块。即,接入网设备发送的第一同步信号块和第二同步信号块占用的时域资源不同。当通过OFDM符号表示时域资源时,则接入网设备发送的第一同步信号块和第二同步信号块所占用的OFDM符号不同。
可选的,接入网设备还可以通过频分复用(Frequency Division Multiplexing,FDM)的方式发送第一同步信号块和第二同步信号块。即,接入网设备发送的第一同步信号块和第二同步信号块占用的频域资源不同。进一步可选的,如果通过同步栅格(Synchronization raster)表示频域资源,则接入网设备发送的第一同步信号块和第二同步信号块对应的同步栅格不同。
S202、接入网设备发送第一同步信号块和第二同步信号块。
可选的,接入网设备可以周期性发送第一同步信号块、以及周期性发送第二同步信号块。接入网发送第一同步信号块的周期与发送第二同步信号块的周期可以相同,也可以不同。
可选的,接入网设备发送第一同步信号块的周期可以与空闲态的终端设备检测同步信号块的周期相同。例如,假设空闲态的终端设备每20毫秒检测一次同步信号块,则接入网设备发送第一同步信号块的周期可以为20毫秒。
需要说明的是,在实际应用过程中,可以根据实际需要设置发送第一同步信号块的周期和发送第二同步信号块的周期,本申请对此不作具体限定。
可选的,接入网设备在发送第一同步信号块的一个周期内,可以重复发送多个第一同步信号块。一个周期内重复发送的多个第一同步信号块承载的信息相同。需要说明的是,如果第一同步信号块中包括接入网设备的时间信息,并且该时间信息随着第一同步信号块的时间位置不同而不同,则一个周期内重复发送的多个第一同步信号块承载的信息相同,可以是指除了第一同步信号块包括的时间信息以外的信息相同。如果第一同步信号块中不包括接入网设备的时间信息,一个周期内重复发送的多个第一同步信号块承载的信息相同,可以是指第二同步信号块承载的所有信息都相同。在本申请中,第一同步信号块承载的信息,可以是第一同步信号块包括的广播消息。例如在一个周期内,接入网设备分别在时间位置1、时间位置2、时间位置3、时间位置4发送第一同步信号块,亦即,在一个周期内,接入网设备发送了4个第一同步信号块,上述4个时间位置相互不重叠,终端设备根据检测到的第一同步信号块,可以确定该第一同步信号块对应的时间位置,也就是说,接入网设备在不同时间位置上发送的第一同步信号块中包括其所对应的时间位置,在上述情况下, 如果这4个第一同步信号块承载的信息中除去时间位置信息外,其他信息都相同,则可以认为在一个周期内这4个第一同步信号块承载的信息是相同的,或者说,接入网设备在一个周期内重复发送了4个第一同步信号块。
需要说明的是,一个周期内重复发送的多个第一同步信号块可以对应接入网设备相同的发射波束方向,也可以对应接入网设备不同的发射波束方向,本申请对此不作具体限定。
在本申请中,接入网设备发送多个第一同步信号块的周期,可以是空闲态或者Inactive状态终端默认的接入网设备发送第一同步信号块的周期。例如在NR***中,空闲态终端默认的接入网设备发送第一同步信号块的周期为20ms。需要说明的是,Inactive状态终端是介于空闲态和活动态(Active)之间的一种终端设备。需要说明的是,在这个周期内,接入网设备可以发送多个第一同步信号块,例如针对中心频点小于3GHz的频段而言,接入网设备在一个周期内最多可以发送4个第一同步信号块,针对中心频点大于3GHz且小于6GHz的频段而言,接入网设备在一个周期内最多可以发送8个第一同步信号块。
由于接入网设备重复发送多个第一同步信号块,可以提高终端设备检测到第一同步信号块的概率。在终端设备接收到多个第一同步信号块时,终端设备可以对接收到的多个第一同步信号块进行合并检测,提高了终端设备对第一同步信号块进行正确解调的概率。
可选的,接入网设备在发送第二同步信号块的一个周期内,可以发送多个第二同步信号块。一个周期内发送的多个第二同步信号块承载的信息相同。需要说明的是,如果第二同步信号块中包括接入网设备的时间信息,并且该时间信息随着第二同步信号块的时间位置不同而不同,则一个周期内发送的多个第二同步信号块承载的信息相同,可以是指除了第二同步信号块包括的时间信息以外的信息相同。如果第二同步信号块中不包括接入网设备的时间信息,一个周期内发送的多个第二同步信号块承载的信息相同,可以是指第二同步信号块承载的所有信息都相同。在本申请中,接入网设备的时间信息,可以包括第二同步信号块对应的时域资源位置,该时域资源位置可以通过***帧号(System Frame Number,SFN)、半帧号、以及该第二同步信号块的索引来表示,其中第二同步信号块的索引与第二同步信号块的时域资源所对应的时间位置是一一对应的。第二同步信号块的时域资源所对应的时间位置可以通过OFDM符号索引来表示,换句话说,接入网设备的时间信息可以通过SFN、半帧号、以及第二同步信号块的索引来表示。类似地,接入网设备的时间信息也可以通过SFN、半帧号、以及第一同步信号块的索引来表示,其中第一同步信号块的索引与第一同步信号的时域资源所对应的时间位置是一一对应的。
在本申请中,第二同步信号块承载的信息,可以是第二同步信号块包括的广播消息。例如在一个周期内,接入网设备分别在时域资源1、时域资源2、时域资源3、时域资源4发送第二同步信号块,亦即,在一个周期内,接入网设备发送了4个第二同步信号块,上述4块时域资源在时域上两两之间不存在重叠,终端设备根据检测到的第二同步信号块,可以确定该第二同步信号块对应的时域资源,例如可以确定该第二同步信号块所对应的SFN、半帧号以及在一个半帧内该第二同步信号块占用的OFDM符号位置。也就是说,接入网设备在不同时域资源上发送的第二同步信号块中包括其所对应的时域资源信息,在上述情况下,如果这4个第二同步信号块承载的信息中除去所述时域资源信息外,其他信息都相同,则可以认为在一个周期内这4个第二同步信号块承载的信息是相同的,或者说,接入网设备在一个周期内发送了4个第二同步信号块。
需要说明的是,一个周期内发送的多个第二同步信号块可以对应接入网设备相同的发射波束方向,也可以对应接入网设备不同的发射波束方向,本申请对此不作具体限定。
在本申请中,第二同步信号块的发送周期,也可以理解为空闲态或者Inactive状态终端默认的第二同步信号块的发送周期。
由于接入网设备发送多个第二同步信号块,可以提高终端设备检测到第二同步信号块的概率。在终端设备接收到多个第二同步信号块时,终端设备可以对接收到的多个第二同步信号块进行合并检测,提高了终端设备对第二同步信号块进行正确解调的概率。
例如,终端设备可以根据第二同步信号块的发送周期,对接入网设备在一个发送周期内发送的第二同步信号块进行合并检测。
可选的,当接入网设备发送第一同步信号块的周期和发送第二同步信号块的周期相同时,接入网设备发送第一同步信号块的时段和接入网设备发送第二同步信号块的时段不同。这样,第二同步信号块的发送不影响第一同步信号块的发送,进而可以保证通过第一同步信号块获取接入网设备的配置信息的可靠性。可选的,接入网设备发送第一同步信号块的周期和发送第二同步信号块的周期相同。例如周期都为20ms。在周期相同的场景下,本申请对第一和第二同步信号块的发送起始或结束位置不作具体限定。
例如,终端设备可以根据接入网设备发送第一同步信号块的周期,对接入网设备在一个发送周期内发送的第一同步信号块进行合并检测。
下面,结合图4,对接入网设备发送第一同步信号块和第二同步信号块的过程进行说明。
图4为本申请提供的发送第一同步信号块和第二同步信号块的过程示意图。请参见图4,接入网设备发送第一同步信号块的周期和发送第二同步信号块的周期均为20毫秒。在一个周期(20毫秒)内,接入网设备可以在该周期的起始5毫秒窗内发送多个第一同步信号块,并在该周期的后15毫秒窗内发送多个第二同步信号块。
需要说明的是,在实际应用过程中,可以根据实际需要设置一个周期内第一同步信号块的发送次数以及发送第一同步信号块所占用的时间窗,可以根据实际需要设置一个周期内第二同步信号块的发送次数以及发送第一同步信号块所占用的时间窗,本申请对此不作具体限定。
可选的,接入网设备发送的第一同步信号块,与至少一个第二同步信号块相关联。
可选的,在一个周期内,接入网设备发送至少一个第一同步信号块和至少一个第二同步信号块,第一同步信号块关联至少一个第二同步信号块。
可选的,该一个周期可以为接入网设备发送第一同步信号块的周期,或者,该一个周期可以为接入网设备发送第二同步信号块的周期。
在一个周期内,接入网设备重复发送至少一个第一同步信号块,例如,请参见图4,在一个周期(20毫秒)内,接入网设备重复发送4个第一同步信号块。在一个周期内,接入网设备重复发送至少一个第二同步信号块,例如,请参见图4,在一个周期(20毫秒)内,接入网设备重复发送8个第二同步信号块。
在本申请中,该一个周期还可以理解为一个时间范围,在这个时间范围内,包括接入网设备在发送第一同步信号块的周期内发送的第一同步信号块,和接入网设备在发送第二同步信号块的周期内发送的第二同步信号块。该时间范围是周期出现的,即在每个时间范 围内,第一同步信号块与第二同步信号块的传输图案是相同的。例如,假设接入网设备在发送第一同步信号块的周期内发送了4个第一同步信号块,在发送第二同步信号块的周期内发送了8个第二同步信号块,则在每个时间范围内,都包括接入网设备发送的4个第一同步信号块和8个第二同步信号块,并且在每个时间范围内,第一同步信号块、第二同步信号块的传输图案是相同的。例如,在这个时间范围内,接入网设备先发4个第一同步信号块,再发8个第二同步信号块,且在一个时间范围内,相邻的同步信号块之间的时域资源间隔在每个时间范围内都是相同的。
在本申请中,第一同步信号块关联至少一个第二同步信号块,可以是,终端设备根据第一同步信号块可以确定得到第一同步信号块所关联的至少一个第二同步信号块的时域位置。需要说明的是,终端设备根据第一同步信号块确定与其关联的第二同步信号块的时域位置,可以是根据第一同步信号块中包括的主同步信号、辅同步信号或广播消息中的至少一种,确定与其关联的第二同步信号块或者,可选地,接入网设备发送的第一同步信号块,与至少一个第二同步信号块相关联,也可以理解为,第一同步信号块和与其关联的至少一个第二同步信号块对应的接入网设备发送的波束方向相同。这主要是考虑由于窄带终端设备带宽能力受限,因此无法接收第一同步信号块中的广播消息,但可以接收第一同步信号块中包括的主同步信号和/或辅同步信号,因此可以根据检测到的第一同步信号块中包括的主同步信号和/或辅同步信号,关联至少一个第二同步信号块。
可选的,第一同步信号块与关联的第二同步信号块之间的时域资源间隔可以为预先定义或者预先配置的时域资源间隔。
第一同步信号块与关联的第二同步信号块之间的时域资源间隔可以为:第一同步信号块的起始时域位置与关联的第二同步信号块的起始时域位置之间的时域资源间隔,或者,第一同步信号块的终止时域位置与关联的第二同步信号块的终止时域位置之间的时域资源间隔,或者,第一同步信号块的起始时域位置与关联的第二同步信号块的终止时域位置之间的时域资源间隔,或者,第一同步信号块的终止时域位置与关联的第二同步信号块的起始时域位置之间的时域资源间隔。或者,还可以是其它任何可以表示上述时域资源间隔的情况,这里不做具体限定,旨在清楚表示第一和第二同步信号块的时域资源的位置关系。
如果接入网设备使用多个OFDM符号传输一个第一同步信号块,那么第一同步信号块的起始时域位置可以是用于传输第一同步信号块的某个特定OFDM符号的起始时域位置,例如,第一同步信号块的起始时域位置可以是第一个OFDM符号的起始时域位置,或者也可以是其他OFDM符号的起始时域位置,本申请对此不作具体限定。第一同步信号块的终止时域位置可以是用于传输第一同步信号块的某个特定OFDM符号的终止时域位置,例如,第一同步信号块的起始时域位置可以是最后一个OFDM符号的终止时域位置,也可以是其他OFDM符号的终止时域位置,本申请对此不作具体限定。
需要说明的是,如果接入网设备使用多个OFDM符号传输一个第二同步信号块,则第二同步信号块的起始时域位置和终止时域位置的描述,可以参见上述对第一同步信号块的起始时域位置和终止时域位置的描述,此处不再进行赘述。
若一个第一同步信号块关联两个及两个以上的第二同步信号块,则第一同步信号块与关联的第二同步信号块之间的时域资源间隔,可以理解为,第一同步信号块与其中1个第二同步信号块之间的时域资源间隔,例如与所关联的多个第二同步信号块中的第一个第二 同步信号块之间的时域资源间隔。
一个第一同步信号块可以关联多个(大于或等于两个)第二同步信号块,若第一同步信号块与其关联的第二同步信号块为FDM分布,则该第一同步信号块关联的多个第二同步信号块之间也是FDM分布。
可选的,与第一同步信号块相关联的第二同步信号块,对应的接入网设备发送波束方向,与接入网设备发送该第一同步信号块的波束方向相同。
可选的,同一第一同步信号块与关联的不同的第二同步信号块之间的时域资源间隔可以相同,也可以不同。
例如,假设第一同步信号块(同步信号块1)关联两个第二同步信号块(分别为同步信号块2和同步信号块3),则同步信号块1与同步信号块2之间的时域资源间隔可以为第一预设时域资源间隔,同步信号块1与同步信号块3之间的时域资源间隔可以为第二预设时域资源间隔。当与同一第一同步信号块关联的多个第二同步信号块是FDM时,即多个第二同步信号块对应的时域资源是相同的,但在频率上是相互错开的,则第一预设时域资源间隔和第二预设时域资源间隔相同。当与同一第一同步信号块关联的多个第二同步信号块为TDM时,即,多个第二同步信号块对应的时域资源不同,则第一预设时域资源间隔和第二预设时域资源间隔不同。需要说明的是,此处所示的第一预设时域资源间隔和第二预设时域资源间隔均可以为预先定义或者预先配置的。
可选的,不同的第一同步信号块与关联的第二同步信号块之间的时域资源间隔可以相同,也可以不同。
例如,第一同步信号块(同步信号块1)与关联的第二同步信号块(同步信号块2)之间的时域资源间隔为第一预设时域资源间隔,第一同步信号块(同步信号块3)与关联的第二同步信号块(同步信号块4)之间的时域资源间隔为第二预设时域资源间隔,第一预设时域资源间隔和第二预设时域资源间隔可以相同,也可以不同。需要说明的是,此处所示的第一预设时域资源间隔和第二预设时域资源间隔均可以为预先定义或者预先配置的。
可选的,在一个周期内,每个第一同步信号块关联的第二同步信号块的个数相同。一个周期内,每个第一同步信号块关联的第二同步信号块的个数为预设的。这样,可以降低终端设备的合并检测复杂度。例如,第二同步信号块中只包括广播消息,通过第二同步信号块接入接入网设备的终端设备,需要先通过第一同步信号块中的主同步信号和辅同步信号获取同步信息,如果在一个周期内,每个第一同步信号块关联的第二同步信号块的个数不同,那么上述终端设备还需要对第一同步信号块所关联的第二同步信号块的个数进行假设,并以此进行合并检测,这样会增加终端设备接入***的复杂度。相反,如果每个第一同步信号块关联的第二同步信号块的个数相同,则终端设备对于可以合并检测的第二同步信号块的个数是确定的,进而降低了合并检测复杂度。
可选的,在一个周期内,不同的第一同步信号块可以关联相同的第二同步信号块,也可以关联不同的第二同步信号块。
例如,请参见图4,假设每个第一同步信号块可以关联2个第二同步信号块,则第一同步信号块和第二同步信号块的关联关系可以如表1所示:
表1
Figure PCTCN2020070474-appb-000001
表1中,同一第一同步信号块与其关联的第二同步信号块之间的时域资源间隔可以是相同的,也可以是不同的,例如T1可以等于T2,或者T1不等于T2。不同第一同步信号块与其关联的第二同步信号块之间的时域资源间隔可以是相同的,也可以是不同的,例如T1=T3,T2=T4,但是T1可以不等于T2。
需要说明的是,为了保证终端设备对广播消息的正确解调,包括主同步信号和/或辅同步信号的同步信号块都可以关联广播消息。在这里,包括主同步信号和/或辅同步信号的同步信号块都可以关联广播消息,可以理解为,终端设备根据检测到的主同步信号和/或辅同步信号,就可以确定接入网设备发送广播消息所对应的时域资源,进而解调该时域资源上承载的广播消息。这是因为一般而言,终端设备先通过主同步信号和辅同步信号,获取接入网设备的同步信息,然后再根据该同步信息,检测接入网设备发送的广播消息。如果包括主同步信号和辅同步信号的同步信号块,有的关联广播消息,有的不关联广播消息,则会导致终端设备在确定同步信息之后检测广播消息的过程中,可能在没有发送广播消息的时域资源上检测广播消息,或者错误地合并广播消息,进而增加终端设备的功耗以及导致广播消息不能有效正确地解调。因此,为了保证终端设备对广播消息的正确解调以及降低终端设备的功耗,可以令包括主同步信号和辅同步信号的同步信号块都可以关联广播消息。可选的,所关联的广播消息均为第二同步信号块中包括的广播消息,或者说窄带终端设备所需要接收的广播消息。
例如,第一同步信号块中包括主同步信号和辅同步信号,因此,第一同步信号块关联有广播消息。当第二同步信号块中包括主同步信号和辅同步信号时,第二同步信号块也关联有广播消息。或者,当第二同步信号块中包括主同步信号和辅同步信号时,终端设备在接收到主同步信号和/或辅同步信号时,若终端设备可以确定该主同步信号和/或辅同步信号属于第一同步信号块还是第二同步信号块,则第一同步信号块或第二同步信号块可以不关联广播消息。需要说明的是,此处涉及的广播消息可以为窄带终端设备所需要接收的广播消息。第二同步信号块可以不关联广播消息,是指第二同步信号块可以不关联其它同步信号块中的广播消息,第二同步信号块本身还是包括广播消息的。
S203、终端设备接收接入网设备发送的第二同步信号块。
可选的,终端设备可以进行盲检测,以实现接收接入网设备发送的第二同步信号块。
可选的,终端设备可以先接收第一同步信号块中的主同步信号和辅同步信号,并通过主同步信号和辅同步信号与接入网设备实现同步。然后,终端设备可以接收第二同步信号块。
可选的,若第一同步信号块与第二同步信号块之间的时域资源间隔为预先定义或者预先配置的时域资源间隔,则在终端设备接收到第一同步信号块中的主同步信号和辅同步信号之后,可以根据第一同步信号块和第二同步信号块之间的时域资源间隔和第一同步信号块的时域位置,确定第二同步信号块的时域位置,并根据第二同步信号块的时域位置接收第二同步信号块。
可选的,终端设备还可以接收来自接入网设备的第一同步信号块中部分频域带宽中的广播消息,例如在带宽允许的范围内。
S204、终端设备根据第二同步信号块获取广播消息。
可选的,终端设备可以接收物理广播信道,并对物理广播信道进行解调,以获取得到广播消息。这里的物理广播信道,可以是根据第二同步信号块获取的,也可以是根据第一同步信号块和第二同步信号块获取的。
可选的,在终端设备获取得到广播消息之后,终端设备可以根据广播消息获取接入网设备的配置信息。可选的,空闲态终端设备还可以根据接入网设备的配置信息请求接入接入网设备。
本申请提供的通信方法,接入网设备可以发送第一同步信号块和第二同步信号块,第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽。在通信过程中,窄带终端可以接收第二同步信号块中的广播消息,并根据第二同步信号块中的广播消息获取接入网设备的配置信息,宽带终端可以接收第一同步信号块中的广播消息,也可以接收第二同步信号块中的广播消息,使得宽带终端可以根据第一同步信号块或者第二同步信号块中的广播消息获取接入网设备的配置信息,这样,可以使得宽带终端和窄带终端均可以获取到接入网设备发送的广播消息,进而使得宽带终端和窄带终端均可以获取接入网设备的配置信息,保证了不同带宽的终端设备特别是窄带终端与接入网设备之间的数据传输的可靠性。
下面,结合图5-图13所示的实施例,介绍第二同步信号块的结构、以及终端设备获取广播消息的过程。
第一种可能的情况:第二同步信号块包括广播消息且不包括主同步信号和辅同步信号。
图5为本申请提供的一种第二同步信号块的结构示意图。请参见图5,第二同步信号块包括广播消息,第二同步信号块中的广播消息的频率带宽小于第一同步信号块中的广播消息的频率带宽。在图5中,通过PBCH表示承载广播消息的物理广播信道。
第二同步信号块的频率带宽小于第一同步信号块中广播消息的频率带宽。例如,当第一同步信号块如图3所示,则第二同步信号块的频率带宽小于20个RB对应的频率带宽。
可选的,第二同步信号块的频率带宽可以等于第一同步信号块中主同步信号和辅同步信号的频率带宽。例如,当第一同步信号块如图3所示,则第二同步信号块的频率带宽可以为12个RB对应的频率带宽。这样,对于窄带终端,即只能通过第二同步信号块中的广播消息接入***的设备而言,可以统一窄带终端设备的带宽能力,即窄带终端设备的最大频率带宽能力可以为12个RB,这样通过第一同步信号块中的主同步信号和辅同步信号,以及第二同步信号块中的广播消息可以接入***。
需要说明的是,在实际应用过程中,可以根据实际需要设置第二同步信号块占用的时域资源(占用的OFDM符号的个数)和频率带宽,本申请对此不作具体限定。
在第二同步信号块如图5所示时,下面,结合图6,对终端设备获取广播消息的过程进行详细说明。
图6为本申请提供的另一种通信方法的流程示意图。请参见图6,该方法可以包括:
S601、终端设备在接入网设备发送的第一同步信号块中获取主同步信号和辅同步信号。
可选的,终端设备可以进行盲检测,以接收到接入网设备发送的第一同步信号块中的主同步信号和辅同步信号。
可选的,终端设备可以为窄带终端。
S602、终端设备根据主同步信号和辅同步信号与接入网设备同步。
需要说明的是,S602的执行过程可以参见现有技术中终端设备通过主同步信号和辅同步信号与接入网设备同步的过程,此处不再进行赘述。
在S602中,终端设备还可以根据主同步信号和辅同步信号获取小区信息,例如小区标识。
S603、终端设备接收第二同步信号块。
可选的,终端设备可以进行盲检测,以接收到接入网设备发送的第二同步信号块。
S604、终端设备在第二同步信号块中获取广播消息。
可选的,由于第二同步信号块中包括广播消息,因此,终端设备可以对传输广播消息的物理广播信道进行解调,以获取广播消息。
在终端设备获取得到广播消息之后,终端设备可以根据广播消息获取接入网设备的配置信息。
在图6所示的实施例中,对于窄带终端,终端设备可以通过第一同步信号块中的主同步信号和辅同步信号与接入网设备同步,并在第二同步信号块中获取广播消息,使得终端设备可以获取到接入网设备的配置信息,提高了通信的可靠性。由于终端设备可以使用第一同步信号块中的主同步信号和辅同步信号,因此降低了标准设计复杂度。由于第二同步信号块中不包括主同步信号和辅同步信号,所以当第二同步信号块对应的时域资源大小与第一同步信号块对应的时域资源大小相同时,第二同步信号块中的广播消息可以使用更多的时域资源来传输,进而保证广播消息的覆盖性能。对于宽带终端,可以通过图5实施例所示的方法获取接入网设备的配置信息。宽带终端还可以根据第一同步信号块获取接入网设备的配置信息,具体的,宽带终端可以根据第一同步信号块中的主同步信号和辅同步信号与接入网设备同步,并获取第一同步信号块中的广播消息,并根据广播消息获取接入网设备的配置信息。
第二种可能的情况:第二同步信号块中包括广播消息、主同步信号和辅同步信号。
图7为本申请提供的另一种第二同步信号块的结构示意图。请参见图7,第二同步信号块包括广播消息、主同步信号和辅同步信号,第二同步信号块中的广播消息的频率带宽小于第一同步信号块中的广播消息的频率带宽。在图7中,通过PBCH表示广播消息。
可选的,接入网设备在一个周期内发送的第一同步信号块中的主同步信号承载的信息与第二同步信号块中的主同步信号承载的信息可以相同。接入网设备在一个周期内发送的第一同步信号块中的辅同步信号承载的信号与第二同步信号块中的辅同步信号承载的信息可以相同。
可选的,第二同步信号块中包括的主同步信号的频率带宽与第一同步信号块中包括的 主同步信号的频率带宽相同,第二同步信号块中包括的辅同步信号的频率带宽与第一同步信号块中包括的辅同步信号的频率带宽相同。
例如,假设第一同步信号块如图3所示,第二同步信号块如图7所示。请参见图7,在时域上,第二同步信号块占用4个OFDM符号。在频域上,第二同步信号块占用12个RB。其中,第二同步信号块中的主同步信号占用第一个OFDM符号上的12个RB(与图3实施例中的第一同步信号块中的主同步信号块占用的RB相同),辅同步信号占用第三个OFDM符号上的12个RB(图3实施例中的第一同步信号块中的辅同步信号块占用的RB相同),广播消息(或者PBCH)占用第二个OFDM符号和第三个OFDM符号上的12个RB。
可选的,第二同步信号块中广播消息对应的频率带宽等于第二同步信号块中主同步信号对应的频率带宽、以及第二同步信号块中辅同步信号对应的频率带宽。这样,可以简化窄带终端接入接入网设备的信号检测复杂度。
例如,假设第二同步信号块中的主同步信号和辅同步信号对应的频率带宽分别为12个RB,则第二同步信号块中的广播消息对应的频率带宽为12个RB。
在图7所示的实施例中,由于第二同步信号块中包括的主同步信号的频率带宽与第一同步信号块中包括的主同步信号的频率带宽相同,第二同步信号块中包括的辅同步信号的频率带宽与第一同步信号块中包括的辅同步信号的频率带宽相同,则终端设备可以在相同的频率上检测第一同步信号块的主同步信号和辅同步信号,以及检测第二同步信号块中的主同步信号和辅同步信号,这样,可以降低对终端设备的带宽能力要求,提高终端设备的同步检测性能。
在图7所示的实施例中,可选的,第二同步信号块中包括的主同步信号与第一同步信号块中包括的主同步信号的序列可以相同,也可以不同。第二同步信号块中包括的辅同步信号与第一同步信号块中包括的辅同步信号的序列可以相同,也可以不同。
当第二同步信号块中包括的主同步信号的序列与第一同步信号块中包括的主同步信号的序列相同,第二同步信号块中包括的辅同步信号的序列与第一同步信号块中包括的辅同步信号的序列相同时,对于可以同时使用第一同步信号块和第二同步信号块中包括的同步信号(主同步信号和辅同步信号)的终端设备而言,降低了序列检测复杂度,并且还可以降低标准设计复杂度。
可选的,序列相同可以是指序列的类型相同以及序列中包括的元素相同。序列不同可以是指序列的类型不同,或者序列中包括的元素不同。
需要说明的是,图7只是以示例的形式示意第二同步信号块的结构和占用的资源量,并非对第二同步信号块的结构和占用的资源量的限定。
在图7所述实施例的基础上,在终端设备检测到主同步信号和辅同步信号之后,为了使得终端设备可以确定检测到的主同步信号和辅同步信号属于哪个同步信号块(第一同步信号块或者第二同步信号块),可以对第二同步信号块中主同步信号和辅同步信号的时域资源间隔进行改变。具体的,请参见图8A-图8D所示的第二同步信号块。
图8A为本申请提供的又一种第二同步信号块的结构示意图。图8B为本申请提供的另一种第二同步信号块的结构示意图。图8C为本申请提供的再一种第二同步信号块的结构示意图。图8D为本申请提供的又一种第二同步信号块的结构示意图。在图7所述实施例 的基础上,请参见图8A-图8D,第二同步信号块包括广播消息、主同步信号和辅同步信号,在时域上,第二同步信号块占用4个OFDM符号。在频域上,第一同步信号块占用12个RB。在图8A-图8D中,通过PBCH表示广播消息。
假设第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,则第一时域资源间隔和第二时域资源间隔不同。
可选的,主同步信号和辅同步信号之间的时域资源间隔可以为,主同步信号所占的起始OFDM符号与辅同步信号所占的起始OFDM符号之间相差的OFDM符号的个数。该时域资源间隔可以为正数,也可以为负数。当辅同步信号的起始OFDM符号位于主同步信号的起始OFDM符号之后(即,在时域上,接入网设备先发送主同步信号,后发送辅同步信号)时,主同步信号和辅同步信号之间的时域资源间隔为大于0的数。当辅同步信号的起始OFDM符号位于主同步信号的起始OFDM符号之前(即,在时域上,接入网设备先发送辅同步信号,后发送主同步信号)时,主同步信号和辅同步信号之间的时域资源间隔为小于0的数。当辅同步信号的起始OFDM符号与主同步信号的起始OFDM符号相同时,主同步信号和辅同步信号之间的时域资源间隔为0。
可选的,主同步信号和辅同步信号之间的时域资源间隔可以为,辅同步信号所占的起始OFDM符号与主同步信号所占的起始OFDM符号之间相差的OFDM符号的个数。该时域资源间隔可以为正数,也可以为负数。当辅同步信号的起始OFDM符号位于主同步信号的起始OFDM符号之后(即,在时域上,接入网设备先发送主同步信号,后发送辅同步信号)时,主同步信号和辅同步信号之间的时域资源间隔为小于0的数。当辅同步信号的起始OFDM符号位于主同步信号的起始OFDM符号之前(即,在时域上,接入网设备先发送辅同步信号,后发送主同步信号)时,主同步信号和辅同步信号之间的时域资源间隔为大于0的数。当辅同步信号的起始OFDM符号与主同步信号的起始OFDM符号相同时,主同步信号和辅同步信号之间的时域资源间隔为0。
需要说明的是,下面示例中,以主同步信号和辅同步信号之间的时域资源间隔为,主同步信号所占的起始OFDM符号与辅同步信号所占的起始OFDM符号之间相差的OFDM符号的个数为例,进行说明。
例如,假设第一同步信号块如图3所示,假设主同步信号和辅同步信号之间的时域资源间隔为主同步信号的起始OFDM符号与辅同步信号的起始OFDM之间的时域资源间隔,则第一同步信号块中主同步信号和辅同步信号的时域资源间隔为2个OFDM符号。
请参见图8A,主同步信号占用第一个OFDM符号上的12个RB,辅同步信号占用第二个OFDM符号上的12个RB,广播消息(或者PBCH)占用第三个OFDM符号和第四个OFDM符号上的12个RB。在图8A中,由于接入网设备先发送主同步信号,后发送辅同步信号,且主同步信号和辅同步信号之间相差1个OFDM符号,因此,第二同步信号块中主同步信号和辅同步信号的时域资源间隔为1个OFDM符号,与第一同步信号块中主同步信号和辅同步信号的时域资源间隔(2个OFDM符号)不同。
请参见图8B,主同步信号占用第二个OFDM符号上的12个RB,辅同步信号占用第一个OFDM符号上的12个RB,广播消息(或者PBCH)占用第三个OFDM符号和第四个OFDM符号上的12个RB。在图8B中,由于接入网设备先发送辅同步信号,后发送主 同步信号,且主同步信号和辅同步信号之间相差1个OFDM符号,因此,第二同步信号块中主同步信号和辅同步信号的时域资源间隔为-1个OFDM符号,与第一同步信号块中主同步信号和辅同步信号的时域资源间隔(2个OFDM符号)不同。
请参见图8C,主同步信号占用第一个OFDM符号上的12个RB,辅同步信号占用第四个OFDM符号上的12个RB,广播消息(或者PBCH)占用第二个OFDM符号和第三个OFDM符号上的12个RB。在图8C中,由于接入网设备先发送主同步信号,后发送辅同步信号,且主同步信号和辅同步信号之间相差3个OFDM符号,因此,第二同步信号块中主同步信号和辅同步信号的时域资源间隔为3个OFDM符号,与第一同步信号块中主同步信号和辅同步信号的时域资源间隔(2个OFDM符号)不同。
请参见图8D,主同步信号占用第四个OFDM符号上的12个RB,辅同步信号占用第一个OFDM符号上的12个RB,广播消息(或者PBCH)占用第二个OFDM符号和第三个OFDM符号上的12个RB。在图8B中,由于接入网设备先发送辅同步信号,后发送主同步信号,且主同步信号和辅同步信号之间相差3个OFDM符号,因此,第二同步信号块中主同步信号和辅同步信号的时域资源间隔为-3个OFDM符号,与第一同步信号块中主同步信号和辅同步信号的时域资源间隔(2个OFDM符号)不同。
需要说明的是,第二同步信号块中主同步信号和辅同步信号之间的第二时域资源间隔还可以为其它,本申请此处不再进行一一列举。
在实际应用过程中,对于宽带终端,优先根据第一同步信号块中的广播消息获取接入网设备的配置信息,可以使得宽带终端具有较高的通信效率。对于窄带终端,只能根据第二同步信号块中广播消息获取接入网设备的配置信息。
在图8A-图8D所示的实施例中,在终端设备接收到主同步信号和辅同步信号之后,终端设备可以根据主同步信号和辅同步信号之间的时域资源间隔判断是否根据该主同步信号和辅同步信号所在的同步信号块中的广播消息获取接入网设备的配置信息。
在图8A-图8D所示的实施例中,终端设备可以先接收主同步信号,并根据主同步信号与接入网设备同步,例如,根据主同步信号与接入网设备实现粗同步,包括时间同步和/或频率同步。终端设备可以以相同的主同步信号发送周期对接收到的信息进行累加,例如,终端设备可以以5毫秒作为检测主同步信号的默认周期,对相隔5毫秒的接收信息进行合并。当终端设备确定检测到主同步信号时,该主同步信号可能为第一同步信号块中包括的主同步信号,也可能为第二同步信号块中包括的主同步信号,对于宽带终端,可以假设辅同步信号默认发送的周期为20毫秒,且根据第一同步信号块中主同步信号与辅同步信号之间的相对位置,确定第一同步信号块中辅同步信号对应的时间位置,并结合20毫秒默认周期,在确定的辅同步信号对应的时间位置上对接收到的信息进行累加,以确定是否检测到辅同步信号。对于窄带终端,可以假设辅同步信号默认发送周期为5毫秒,且根据第二同步信号块中主同步信号和辅同步信号之间的相对位置,确定第二同步信号块中辅同步信号相应的时间位置,并结合5毫秒默认周期对确定的辅同步信号对应的时间位置上对接收到的信息进行累加,以确定是否检测到辅同步信号。由于第一同步信号块中包括的主同步信号与辅同步信号之间的时域资源间隔,与第二同步信号块中包括的主同步信号与辅同步信号之间的时域资源间隔不同,因此不同类型的终端设备(例如宽带终端和窄带终端)根据检测到的主同步信号,可以直接确定不同类型的同步信号块(第一同步信号块和第二 同步信号块)中包括的辅同步信号所在的时域位置,进而对辅同步信号进行检测,从而避免了额外的功耗以及降低了检测复杂度。
对于宽带终端,若宽带终端根据主同步信号和辅同步信号之间的时域资源间隔判断该主同步信号和辅同步信号属于第一同步信号块,则宽带终端接收该第一同步信号块中的广播消息。可选的,若宽带终端根据主同步信号和辅同步信号之间的时域资源间隔判断该主同步信号和辅同步信号属于第二同步信号块,则可以根据该主同步信号和辅同步信号与接入网设备同步,但不接收该第二同步信号块中的广播消息。可选的,若宽带终端根据主同步信号和辅同步信号之间的时域资源间隔判断该主同步信号和辅同步信号属于第二同步信号块时,宽带终端也可以接收第二同步信号块中的广播消息,这样,当宽带终端与接入网设备之间的信道质量变差(例如宽带终端进入地下室、隧道等环境)时,则可以通过提前获取的第二同步信号块中的广播消息,利用窄带终端保持数据传输的技术(例如多次重复传输技术),与接入网设备保持数据传输,而不需要再重新与接入网设备建立窄带数据传输链接,降低了***开销以及宽带终端的实现复杂度,并且也有助于业务的连续性传输,保证了用户体验。
对于窄带终端,若窄带终端根据主同步信号和辅同步信号之间的时域资源间隔判断该主同步信号和辅同步信号属于第二同步信号块,则窄带终端接收该第二同步信号块中的广播消息。若窄带终端根据主同步信号和辅同步信号之间的时域资源间隔判断该主同步信号和辅同步信号属于第一同步信号块,则可以根据该主同步信号和辅同步信号与接入网设备同步,但不接收该第一同步信号中的广播消息。
在第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔,与第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔不同时,终端设备可以通过接收到的主同步信号和辅同步信号确定接收到的主同步信号和辅同步信号属于哪种同步信号块(第一同步信号块或者第二同步信号块),这样,终端设备不需要进行不必要的广播消息检测,进而可以降低功耗以及保证有效地数据传输。以窄带终端设备为例,尽管窄带终端可以检测第一同步信号块中的主同步信号和辅同步信号,但由于带宽能力受限,窄带终端无法接收第一同步信号块中包括的广播消息,如果窄带终端设备不能确定接收到的主同步信号块和辅同步信号块属于第一同步信号块还是第二同步信号块,则窄带终端接收到第一同步信号块中的主同步信号和辅同步信号之后,会对第一同步信号块中的广播消息进行不必要的检测。
需要说明的是图8A-图8D只是以示例的形式示意第二同步信号块的结构和占用的资源量,并非对第二同步信号块的结构和占用的资源量的限定。
在图7所示实施例的基础上,可选的,第一同步信号块中包括的主同步信号对应的序列与第二同步信号块中包括的主同步信号对应的序列不同,和/或,第一同步信号块中包括的辅同步信号对应的序列与第二同步信号块中包括的辅同步信号对应的序列不同。这样,终端设备可以根据检测到的主同步信号和/或辅同步信号,确定检测到的同步信号(主同步信号和辅同步信号)所在的同步信号块的类型(即第一同步信号块或第二同步信号块),可以避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
例如,若第一同步信号块中包括的主同步信号对应的序列与第二同步信号块中包括的主同步信号块对应的序列不同,则终端设备可以根据检测到的主同步信号确定接收到的同 步信号所在的同步信号块的类型。若第一同步信号块中包括的辅同步信号对应的序列与第二同步信号块中包括的辅同步信号块对应的序列不同,则终端设备可以根据检测到的辅同步信号确定接收到的同步信号所在的同步信号块的类型。若第一同步信号块中包括的主同步信号对应的序列与第二同步信号块中包括的主同步信号块对应的序列不同,且第一同步信号块中包括的辅同步信号对应的序列与第二同步信号块中包括的辅同步信号块对应的序列不同,则终端设备可以根据检测到的主同步信号和/或辅同步信号确定接收到的同步信号所在的同步信号块的类型。
在图7所示的实施例的基础上,可选地,第一同步信号块和第二同步信号块的频域位置不同。这样,在终端设备检测到同步信号(主同步信号和辅同步信号)之后,终端设备可以根据同步信号的频域位置确定同步信号所述的同步信号块的类型(第一同步信号块或者第二同步信号块),进而避免终端设备在检测广播消息时不必要的功耗以及降低终端设备检测复杂度。
可选的,该频域位置可以表示为绝对频率值。可以通过同步栅格(Synchronization raster)指示同步信号块的频域位置,相应的,第一同步信号块对应的同步栅格和第二同步信号块对应的同步栅格不同。一般而言,终端设备通常依照预设的同步栅格检测同步信号块,如果第一同步信号块与第二同步信号块对应的同步栅格不同,则不同类型的终端设备(窄带终端和宽带终端)可以分别按照各自预设的同步栅格检测同步信号块,例如针对宽带终端的同步栅格定义为N*1200kHz+M*50kHz,其中N、M为正整数,窄带终端的同步栅格指示的频率位置与宽带终端的同步栅格指示的频率位置错开,例如,窄带终端的同步栅格可以定义为N*1200kHz+M*50kHz+Offset kHz,其中,Offset不等于M’*50,和/或不等于N’*1200。
当第二同步信号块中也包括主同步信号和辅同步信号,并且主同步信号和辅同步信号与第一同步信号块中包括的主同步信号和辅同步信号相同时,包括主、辅同步信号对应的序列相同,以及在同步信号块,主同步信号与辅同步信号之间的时域资源间隔也相同时,第一同步信号块与第二同步信号块之间的同步raster设置不同,可以有效地降低终端设备检测广播消息的功耗以及降低检测复杂度。
可选的,第一同步信号块中包括的主同步信号的频率带宽与第二同步信号块中包括的主同步信号块的频率带宽相同,第一同步信号块中包括的主同步信号对应的序列和第二同步信号块中包括的主同步信号对应的序列相同;第一同步信号块中包括的辅同步信号的频率带宽与第二同步信号块中包括的辅同步信号块的频率带宽相同,第一同步信号块中包括的辅同步信号对应的序列和第二同步信号块中包括的辅同步信号对应的序列相同;第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔,与第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔不同。这样,可以提高终端设备的同步检测性能,降低序列检测复杂度和标准设计复杂度,还可以使得终端设备可以根据同步信号的频域位置确定同步信号所述的同步信号块的类型(第一同步信号块或者第二同步信号)。
需要说明的是,在实际应用过程中,可以根据实际需要确定第一同步信号块中包括的主同步信号的频率带宽与第二同步信号块中包括的主同步信号块的频率带宽是否相同,第一同步信号块中包括的主同步信号对应的序列和第二同步信号块中包括的主同步信号对应的序列是否相同,第一同步信号块中包括的辅同步信号的频率带宽与第二同步信号块中 包括的辅同步信号块的频率带宽是否相同,第一同步信号块中包括的辅同步信号对应的序列和第二同步信号块中包括的辅同步信号对应的序列是否相同,以及第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔,与第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔是否相同,上述多种情况之间可以任意组合,本申请对此不作具体限定。
需要说明的是,在本申请中,第二同步信号块的结构(例如,第二同步信号块中仅包括广播信道,或者第二同步信号块中包括广播信道,以及主同步信号或辅同步信号中的至少一项)可以是预配置的,例如标准协议规范,或者是接入网设备通知给终端设备的。第二同步信号块所占用的时域资源和频域资源也可以是预配置的,例如标准协议规范,或者是接入网设备通知给终端设备的。第一同步信号块所关联的第二同步信号块也可以是预配置的,例如标准协议规范,或者是接入网设备通知给终端设备的。进一步可选地,接入网设备通知给终端设备可以使用广播信令,也可以使用终端设备特定的信令,该信令可以是无线资源控制(Radio Resource Control,RRC)信令,也可以是物理层信令,例如承载通过物理层控制信道发送的信令,也可以是介质访问控制(Media Access Control,MAC)信令,本申请不作具体限定。
图9为本申请提供的另一种通信方法的流程示意图。请参见图9,该方法可以包括:
S901、终端设备接收接入网设备发送的主同步信号和辅同步信号。
可选的,终端设备可以进行盲检测,以接收到接入网设备发送的主同步信号和辅同步信号。
可选的,终端设备接收到的主同步信号块和辅同步信号块可能属于第一同步信号块,也可能属于第二同步信号块。
S902、终端设备获取主同步信号和辅同步信号的时域资源间隔。
可选的,终端设备可以根据接收到主同步信号的时刻和接收到辅同步信号的时刻,确定主同步信号和辅同步信号之间的时域资源间隔。
S903、终端设备判断主同步信号和辅同步信号之间的时域资源间隔是否与终端设备的类型对应。
若是,则执行S904-S905。
若否,则执行S906。
可选的,终端设备的类型包括宽带终端类型和窄带终端类型。
可选的,宽带终端设备对应第一同步信号块中主同步信号和辅同步信号之间的时域资源间隔,窄带终端对应第二同步信号块中主同步信号和辅同步信号之间的时域资源间隔。
可选的,可以预先设置终端设备的类型与时域资源间隔(主同步信号和辅同步信号之间的时域资源间隔)的对应关系。
例如,假设第一同步信号块如图3所示,第二同步信号块如图8A所示,则该对应关系可以如表2所示:
表2
终端设备的类型 主同步信号和辅同步信号之间的时域资源间隔
宽带终端类型 2个OFDM符号
窄带终端类型 1个OFDM符号
S904、终端设备根据主同步信号和辅同步信号与接入网设备同步。
需要说明的是,S905的执行过程可以参见现有技术中终端设备通过主同步信号和辅同步信号与接入网设备同步的过程,此处不再进行赘述。
在S904中,终端设备还可以根据主同步信号和辅同步信号获取小区信息,例如小区标识。
S905、终端设备接收该主同步信号和辅同步信号所在的同步信号块中的广播消息。
可选的,若终端设备为宽带终端,则终端设备接收到的主同步信号和辅同步信号属于第一同步信号块,则终端设备接收该第一同步信号块中的广播消息。
可选的,若终端设备为窄带终端,则终端设备接收到的主同步信号和辅同步信号属于第二同步信号块,则终端设备接收该第二同步信号块中的广播消息。
可选的,在终端设备获取得到广播消息之后,终端设备可以根据广播消息获取接入网设备的配置信息。
S906、终端设备不接收该主同步信号和辅同步信号所在的同步信号块中的广播消息。
可选的,若终端设备为宽带终端,则终端设备接收到的主同步信号和辅同步信号属于第二同步信号块,则终端设备不接收该第二同步信号块中的广播消息。
可选的,若终端设备为窄带终端,则终端设备接收到的主同步信号和辅同步信号属于第一同步信号块,则终端设备不接收该第一同步信号块中的广播消息。
在图9所示的实施例中,在窄带终端设备接收到第一同步信号块中的主同步信号和辅同步信号之后,该第一同步信号块中的广播消息为窄带终端检测不到的,由于窄带终端可以通过接收到的主同步信号和辅同步信号之间的时域资源间隔确定不接收到第一同步信号块中的广播消息,避免了浪费窄带终端的功耗。在宽带终端设备接收到第二同步信号块中的主同步信号和辅同步信号之后,该宽带终端以接收第一同步信号块中的广播消息对应的频率带宽无法正确接收到第二同步信号块中的广播消息,由于宽带终端可以通过接收到的主同步信号和辅同步信号之间的时域资源间隔确定不接收到第二同步信号块中的广播消息,避免了浪费宽带终端的功耗。
第三种可能的情况:第二同步信号块中包括广播消息和主同步信号。
图10为本申请提供的另一种第二同步信号块的结构示意图。请参见图10,第二同步信号块包括广播消息和主同步信号,第二同步信号块中的广播消息的频率带宽小于第一同步信号块中的广播消息的频率带宽。在图10中,通过PBCH表示广播消息。
可选的,第二同步信号中包括的主同步信号的频率带宽和第一同步信号块中包括的主同步信号的频率带宽相同。这样,使得终端设备可以在相同的频率上检测到第一同步信号块中的主同步信号和第二同步信号块中的主同步信号,进而提高终端设备的同步检测性能。
可选的,第二同步信号块中包括的主同步信号块的序列和第一同步信号块中包括的主同步信号块的序列相同。这样,终端设备可以对第一同步信号块中的主同步信号和第二同步信号块中的主同步信号进行合并处理,进而提高终端设备检测到主同步信号块的概率。
可选的,终端设备可以接收第一同步信号块中的主同步信号,也可以接收第二同步信号块中的主同步信号。终端设备可以接收第一同步信号块中的辅同步信号。
对于窄带终端,根据主同步信号和辅同步信号与接入网设备同步之后,窄带终端可以根据第二同步信号块中的广播消息获取接入网设备的配置信息。
可选的,当接入网设备以图4所示的方式发送第一同步信号块和第二同步信号块时,则窄带终端可以以5毫秒为默认周期接收主同步信号,并实现合并,例如,窄带终端可以对5毫秒滑动窗内的能量进行累加以实现接收主同步信号。在窄带终端接收到主同步信号之后,可以以20毫秒为周期接收辅同步信号,并实现合并。在窄带终端接收到主同步信号之后,并无法确定接收到的主同步信号属于20毫秒时间窗内哪5毫秒时间窗,因此,窄带终端无法确定辅同步信号的位置,因此,窄带终端可以对辅同步信号的位置进行多个假设,并基于多个假设进行逐一合并,这样,窄带终端可以根据多个假设合并的结果(例如能量结果),确定辅同步信号的位置,进而实现与接入网设备之间的同步、以及获取小区信息。为了降低窄带终端检测辅同步信号的复杂度,第一同步信号块中的主同步信号与第二同步信号块中的主同步信号对应的序列可以不同,进一步可选地,以图4为例,考虑到在20ms时间窗内,不同的第二同步信号块中包括的主同步信号与第一同步信号块中包括的辅同步信号或主同步信号之间的时域资源间隔不同,因此还可以配置在20ms内的不同第二同步信号块包括的主同步信号对应的序列各不相同,这样终端设备根据检测到的主同步信号,可以唯一确定第一同步信号块中包括的辅同步信号所在的时域资源位置,从而实现辅同步信号的检测。
对于宽带终端,根据主同步信号和辅同步信号与接入网设备同步之后,宽带终端优先根据第一同步信号块中的广播消息获取接入网设备的配置信息。若宽带终端未能检测到第一同步信号块,则宽带终端还可以根据第二同步信号块中的广播消息获取接入网设备的配置信息。
需要说明的是,在本申请中,根据第一同步信号块中的广播消息获取的接入网设备的配置信息(又可以称为第一同步信号块所关联的接入网设备的配置信息),与根据第二同步信号块中的广播消息获取的接入网设备的配置信息(又可以称为第二同步信号块所关联的接入网设备的配置信息)是不同的。第一同步信号块所关联的接入网设备的配置信息适用于宽带终端设备,而第二同步信号块所关联的接入网设备配置信息适用于窄带终端和宽带终端。其中,当宽带终端与接入网设备之间的信道质量较好时,第一同步信号块所关联的接入网设备的配置信息相比于第二同步信号块所关联的接入网设备的配置信息,可以使得宽带终端的通信效率更高。
可选的,第二同步信号块中广播消息对应的频率带宽等于第二同步信号块中主同步信号对应的频率带块。这样,可以简化窄带终端获取接入网设备的配置信息的信号检测复杂度。
例如,假设第二同步信号块中的主同步信号对应的频率带宽为12个RB,则第二同步信号块中的广播消息对应的频率带宽为12个RB。
在第二同步信号块如图10所示时,下面,结合图11,对终端设备获取广播消息的过程进行详细说明。
图11为本申请提供的另一种通信方法的流程示意图。请参见图11,该方法可以包括:
S1101、终端设备在接入网设备发送的第二同步信号块中获取主同步信号。
需要说明的是,终端设备还可以在接入网设备发送的第一同步信号块中获取主同步信号。
可选的,终端设备可以为窄带终端。
S1102、终端设备在接入网设备发送的第一同步信号块中获取辅同步信号。
S1103、终端设备根据接收到的主同步信号和辅同步信号与接入网设备同步。
需要说明的是,S1103的执行过程可以参见现有技术中终端设备通过主同步信号和辅同步信号与接入网设备同步的过程,此处不再进行赘述。
在S1103中,终端设备还可以根据主同步信号和辅同步信号获取小区信息,例如小区标识。
S1104、终端设备在接入网设备发送的第二同步信号块中获取广播消息。
在终端设备获取得到广播消息之后,终端设备可以根据广播消息获取接入网设备的配置信息。
在图11所示的实施例中,对于窄带终端,窄带终端可以通过第一同步信号块中的辅同步信号和第二同步信号块中的主同步信号与接入网设备同步,并在第二同步信号块中获取广播消息,使得窄带终端可以获取到接入网设备的配置信息,提高了通信的可靠性。,对于宽带终端,可以通过图11实施例所示的方法获取接入网设备的配置信息。宽带终端还可以根据第一同步信号块获取接入网设备的配置信息,具体的,宽带终端可以根据第一同步信号块中的主同步信号和辅同步信号与接入网设备同步,并获取第一同步信号块中的广播消息,并根据广播消息获取接入网设备的配置信息。
第四种可能的情况:第二同步信号块中包括广播消息和辅同步信号。
图12为本申请提供的又一种第二同步信号块的结构示意图。请参见图12,第二同步信号块包括广播消息和辅同步信号,第二同步信号块中的广播消息的频率带宽小于第一同步信号块中的广播消息的频率带宽。在图12中,通过PBCH表示广播消息。
可选的,第二同步信号中包括的辅同步信号的频率带宽和第一同步信号块中包括的辅同步信号的频率带宽相同。这样,使得终端设备可以在相同的频率上检测到第一同步信号块中的辅同步信号和第二同步信号块中的辅同步信号,进而提高终端设备的同步检测性能。
可选的,第二同步信号块中包括的辅同步信号块的序列和第一同步信号块中包括的辅同步信号块的序列相同。这样,终端设备可以对第一同步信号块中的辅同步信号和第二同步信号块中的辅同步信号进行合并处理,进而提高终端设备检测到辅同步信号块的概率。
例如,终端设备可以对接入网设备在一个周期内的辅同步信号进行合并检测,
可选的,终端设备可以接收第一同步信号块中的主同步信号。终端设备可以接收第一同步信号块中的辅同步信号,也可以接收第二同步信号块中的辅同步信号块。
对于窄带终端,根据主同步信号和辅同步信号与接入网设备同步之后,窄带终端可以根据第二同步信号块中的广播消息获取接入网设备的配置信息。
对于宽带终端,根据主同步信号和辅同步信号与接入网设备同步之后,宽带终端优先根据第一同步信号块中的广播消息获取接入网设备的配置信息。若宽带终端未能检测到第一同步信号块,则宽带终端还可以根据第二同步信号块中的广播消息获取接入网设备的配置信息。
可选的,第二同步信号块中广播消息对应的频率带宽等于第二同步信号块中辅同步信号对应的频率带块。这样,可以简化窄带终端获取接入网设备的配置信息的信号检测复杂度。
例如,假设第二同步信号块中的辅同步信号对应的频率带宽为12个RB,则第二同步 信号块中的广播消息对应的频率带宽为12个RB。
在第二同步信号块如图12所示时,下面,结合图13,对终端设备获取广播消息的过程进行详细说明。
图13为本申请提供的另一种通信方法的流程示意图。请参见图13,该方法可以包括:
S1301、终端设备在接入网设备发送的第一同步信号块中获取主同步信号。
可选的,终端设备可以为窄带终端。
S1302、终端设备在接入网设备发送的第二同步信号块中获取辅同步信号。
需要说明的是,终端设备还可以在接入网设备发送的第一同步信号块中获取辅同步信号。终端设备可以根据第一同步信号块中的主同步信号与第二同步信号块中的辅同步信号之间的时域资源间隔,以及检测到的主同步信号,确定第二同步信号块中的辅同步信号所在的时域资源位置。该时域资源间隔可以是预配置的,例如标准协议规范,与第一同步信号块关联的第二同步信号块或第二同步信号块中的辅同步信号也可以是预配置的,这里的关联可以表示,终端设备根据检测到的第一同步信号块,可以确定与其关联的第二同步信号块所在的时域资源位置和/或频域资源位置。
S1303、终端设备根据接收到的主同步信号和辅同步信号与接入网设备同步。
需要说明的是,S1303的执行过程可以参见现有技术中终端设备通过主同步信号和辅同步信号与接入网设备同步的过程,此处不再进行赘述。
在S1303中,终端设备还可以根据主同步信号和辅同步信号获取小区信息,例如小区标识。
S1304、终端设备在接入网设备发送的第二同步信号块中获取广播消息。
在终端设备获取得到广播消息之后,终端设备可以根据广播消息获取接入网设备的配置信息。
在图13所示的实施例中,对于窄带终端,窄带终端可以通过第一同步信号块中的主同步信号和第二同步信号块中的辅同步信号与接入网设备同步,并在第二同步信号块中获取广播消息,使得窄带终端可以获取到接入网设备的配置信息,提高了通信的可靠性。对于宽带终端,可以通过图13实施例所示的方法获取接入网设备的配置信息。宽带终端还可以根据第一同步信号块获取接入网设备的配置信息,具体的,宽带终端可以根据第一同步信号块中的主同步信号和辅同步信号与接入网设备同步,并获取第一同步信号块中的广播消息,并根据广播消息获取接入网设备的配置信息。
图14为本申请提供的一种通信装置的结构示意图。请参见图14,该通信装置10可以包括:
接收模块11,用于接收接入网设备发送的第二同步信号块;
处理模块12,用于根据所述第二同步信号块获取广播消息;
其中,所述第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽,所述第一同步信号块对应于所述接入网设备。
可选的,接收模块11可以执行图2实施例中的S203,图6实施例中的S601和S603,图9实施例中的S901、S905和S906,图11实施例中的S1101、S1102和S1104,以及图13中的S1301、S1302和S1304。
可选的,处理模块12可以执行图2实施例中的S204,图6实施例中的S602和S604, 图9实施例中的S902-S904,图11实施例中的S1103,以及图13中的S1303。
需要说明的是,在实际应过程中,可以由处理模块12控制接收模块11进行数据的接收。
需要说明的是,本申请所示的通信装置可以执行上述方法实施例所示的技术方案,其实现原理以及有益效果类似,此处不再进行赘述。
在一种可能的实施方式中,所述第一同步信号块还包括主同步信号和辅同步信号;以及
所述第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
在一种可能的实施方式中,所述第二同步信号块包括主同步信号和辅同步信号,所述第二同步信号中包括的主同步信号的频率带宽与所述第一同步信号块中包括的主同步信号的频率带宽相同,所述第二同步信号中包括的辅同步信号的频率带宽与所述第一同步信号块中包括的辅同步信号的频率带宽相同。
在一种可能的实施方式中,所述第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;
所述第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,所述第一时域资源间隔和所述第二时域资源间隔不同。
在一种可能的实施方式中,所述第一同步信号块和所述第二同步信号块满足如下中的至少一种:
所述第二同步信号块包括主同步信号,所述第二同步信号块中包括的主同步信号与所述第一同步信号块中包括的主同步信号的序列相同;
所述第二同步信号块包括辅同步信号,所述第二同步信号块中包括的辅同步信号与所述第一同步信号块中包括的辅同步信号的序列相同;
所述第二同步信号块包括主同步信号,所述第一同步信号块中包括的主同步信号对应的序列,与所述第二同步信号块中包括的主同步信号对应的序列不同;
所述第二同步信号块包括辅同步信号,所述第一同步信号块中包括的辅同步信号对应的序列,与所述第二同步信号块中包括的辅同步信号对应的序列不同。
在一种可能的实施方式中,在一个周期内,所述第一同步信号块关联至少一个第二同步信号块,所述至少一个第二同步信号块包括所述第二同步信号块。
在一种可能的实施方式中,所述第一同步信号块与所述至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
需要说明的是,本申请所示的通信装置可以执行上述方法实施例所示的技术方案,其实现原理以及有益效果类似,此处不再进行赘述。
图15为本申请提供的另一种通信装置的结构示意图。请参见图15,该通信装置20可以包括:
处理模块21,用于生成第一同步信号块和第二同步信号块,所述第一同步信号块中的广播消息的频率带宽大于所述第二同步信号块中的广播消息的频率带宽;
发送模块22,用于发送所述第一同步信号块和所述第二同步信号块。
可选的,处理模块21可以执行图2实施例中的S201。
可选的,发送模块22可以执行图2实施例中的S202。
需要说明的是,本申请所示的通信装置可以执行上述方法实施例所示的技术方案,其实现原理以及有益效果类似,此处不再进行赘述。
在一种可能的实施方式中,所述第一同步信号块还包括主同步信号和辅同步信号;以及
所述第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
在一种可能的实施方式中,所述第二同步信号块包括主同步信号和辅同步信号,所述第二同步信号中包括的主同步信号的频率带宽与所述第一同步信号块中包括的主同步信号的频率带宽相同,所述第二同步信号中包括的辅同步信号的频率带宽与所述第一同步信号块中包括的辅同步信号的频率带宽相同。
在一种可能的实施方式中,所述第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;
所述第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,所述第一时域资源间隔和所述第二时域资源间隔不同。
在一种可能的实施方式中,所述第一同步信号块和所述第二同步信号块满足如下中的至少一种:
所述第二同步信号块包括主同步信号,所述第二同步信号块中包括的主同步信号与所述第一同步信号块中包括的主同步信号的序列相同;
所述第二同步信号块包括辅同步信号,所述第二同步信号块中包括的辅同步信号与所述第一同步信号块中包括的辅同步信号的序列相同;
所述第二同步信号块包括主同步信号,所述第一同步信号块中包括的主同步信号对应的序列,与所述第二同步信号块中包括的主同步信号对应的序列不同;
所述第二同步信号块包括辅同步信号,所述第一同步信号块中包括的辅同步信号对应的序列,与所述第二同步信号块中包括的辅同步信号对应的序列不同。
在一种可能的实施方式中,在一个周期内,所述第一同步信号块关联至少一个第二同步信号块,所述至少一个第二同步信号包括所述第二同步信号块。
在一种可能的实施方式中,在所述一个周期内,每个第一同步信号块关联的第二同步信号块的个数相同。
在一种可能的实施方式中,所述第一同步信号块与所述至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
需要说明的是,本申请所示的通信装置可以执行上述方法实施例所示的技术方案,其实现原理以及有益效果类似,此处不再进行赘述。
应理解,上述通信装置中的处理模块可以被实现为处理器,接收模块可以被实现为接收器,发送模块可以被实现为发送器。
图16为本申请提供的一种通信装置的硬件结构示意图。请参见图16,该通信装置30包括:存储器31、处理器32和接收器33,其中,存储器31和处理器32通信;示例性的,存储器31、处理器32和接收器33可以通过通信总线34通信,所述存储器31用于存储计算机程序,所述处理器32执行所述计算机程序实现上述通信方法。
可选的,通信装置30还可以包括发送器。
可选的,本申请所示的处理器32和/或接收器33可以执行图2所示实施例中的 S202-S203,以及图6、图9、图11、图13实施例所示的方法。
可选的,本申请所示的处理器32可以实现图14实施例中的处理模块12的功能,接收器33可以实现图14实施例中接收模块11的功能,此处不再进行赘述。
可选的,上述处理器可以是中央处理单元(Central Processing Unit,CPU),还可以是其他通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请所公开的通信方法实施例中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。
图17为本申请提供的一种通信装置的硬件结构示意图。请参见图17,该通信装置40包括:存储器41、处理器42和发送器43,其中,存储器41和处理器42通信;示例性的,存储器41、处理器42和发送器43可以通过通信总线44通信,所述存储器41用于存储计算机程序,所述处理器42执行所述计算机程序实现上述通信方法。
可选的,通信装置40还可以包括接收器。
可选的,本申请所示的处理器42和/或发送器43可以执行图2所示实施例中的S201-S202。
可选的,本申请所示的处理器42可以实现图15实施例中的处理模块21的功能,发送器43可以实现图15实施例中发送模块22的功能,此处不再进行赘述。
可选的,上述处理器可以是中央处理单元(Central Processing Unit,CPU),还可以是其他通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请所公开的通信方法实施例中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。
本申请提供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序用于实现上述实施例所述的通信方法。
实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一可读取存储器中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储器(存储介质)包括:只读存储器(英文:read-only memory,缩写:ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(英文:magnetic tape)、软盘(英文:floppy disk)、光盘(英文:optical disc)及其任意组合。
本申请实施例是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理单元以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理单元执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请实施例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。
在本申请中,术语“包括”及其变形可以指非限制性的包括;术语“或”及其变形可以指“和/或”。本本申请中术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。本申请中,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,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。字符“/”一般表示前后关联对象是一种“或”的关系。

Claims (34)

  1. 一种通信方法,其特征在于,所述方法包括:
    终端设备接收接入网设备发送的第二同步信号块;
    所述终端设备根据所述第二同步信号块获取广播消息;
    其中,第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽,所述第一同步信号块对应于所述接入网设备。
  2. 根据权利要求1所述的方法,其特征在于,
    所述第一同步信号块还包括主同步信号和辅同步信号;以及
    所述第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
  3. 根据权利要求2所述的方法,其特征在于,
    所述第二同步信号块包括主同步信号和辅同步信号,所述第二同步信号中包括的主同步信号的频率带宽与所述第一同步信号块中包括的主同步信号的频率带宽相同,所述第二同步信号中包括的辅同步信号的频率带宽与所述第一同步信号块中包括的辅同步信号的频率带宽相同。
  4. 根据权利要求3所述的方法,其特征在于,
    所述第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;
    所述第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,所述第一时域资源间隔和所述第二时域资源间隔不同。
  5. 根据权利要求2-4任一项所述的方法,其特征在于,所述第一同步信号块和所述第二同步信号块满足如下中的至少一种:
    所述第二同步信号块包括主同步信号,所述第二同步信号块中包括的主同步信号与所述第一同步信号块中包括的主同步信号的序列相同;
    所述第二同步信号块包括辅同步信号,所述第二同步信号块中包括的辅同步信号与所述第一同步信号块中包括的辅同步信号的序列相同;
    所述第二同步信号块包括主同步信号,所述第一同步信号块中包括的主同步信号对应的序列,与所述第二同步信号块中包括的主同步信号对应的序列不同;
    所述第二同步信号块包括辅同步信号,所述第一同步信号块中包括的辅同步信号对应的序列,与所述第二同步信号块中包括的辅同步信号对应的序列不同。
  6. 根据权利要求1-5任一项所述的方法,其特征在于,
    在一个周期内,所述第一同步信号块关联至少一个第二同步信号块,所述至少一个第二同步信号块包括所述第二同步信号块。
  7. 根据权利要求6所述的方法,其特征在于,所述第一同步信号块与所述至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
  8. 一种通信方法,其特征在于,包括:
    接入网设备生成第一同步信号块和第二同步信号块,所述第一同步信号块中的广播消息的频率带宽大于所述第二同步信号块中的广播消息的频率带宽;
    所述接入网设备发送所述第一同步信号块和所述第二同步信号块。
  9. 根据权利要求8所述的方法,其特征在于,
    所述第一同步信号块还包括主同步信号和辅同步信号;以及
    所述第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
  10. 根据权利要求9所述的方法,其特征在于,
    所述第二同步信号块包括主同步信号和辅同步信号,所述第二同步信号中包括的主同步信号的频率带宽与所述第一同步信号块中包括的主同步信号的频率带宽相同,所述第二同步信号中包括的辅同步信号的频率带宽与所述第一同步信号块中包括的辅同步信号的频率带宽相同。
  11. 根据权利要求10所述的方法,其特征在于,所述第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;
    所述第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,所述第一时域资源间隔和所述第二时域资源间隔不同。
  12. 根据权利要求9-11任一项所述的方法,其特征在于,所述第一同步信号块和所述第二同步信号块满足如下中的至少一种:
    所述第二同步信号块还包括主同步信号,所述第二同步信号块中包括的主同步信号与所述第一同步信号块中包括的主同步信号的序列相同;
    所述第二同步信号块还包括辅同步信号,所述第二同步信号块中包括的辅同步信号与所述第一同步信号块中包括的辅同步信号的序列相同;
    所述第二同步信号块还包括主同步信号,所述第一同步信号块中包括的主同步信号对应的序列,与所述第二同步信号块中包括的主同步信号对应的序列不同;
    所述第二同步信号块还包括辅同步信号,所述第一同步信号块中包括的辅同步信号对应的序列,与所述第二同步信号块中包括的辅同步信号对应的序列不同。
  13. 根据权利要求8-12任一项所述的方法,其特征在于,
    在一个周期内,所述第一同步信号块关联至少一个第二同步信号块,所述至少一个第二同步信号包括所述第二同步信号块。
  14. 根据权利要求13所述的方法,其特征在于,在所述一个周期内,每个第一同步信号块关联的第二同步信号块的个数相同。
  15. 根据权利要求13或14所述的方法,其特征在于,所述第一同步信号块与所述至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
  16. 一种通信装置,其特征在于,包括:
    接收模块,用于接收接入网设备发送的第二同步信号块;
    处理模块,用于根据所述第二同步信号块获取广播消息;
    其中,第一同步信号块中的广播消息的频率带宽大于第二同步信号块中的广播消息的频率带宽,所述第一同步信号块对应于所述接入网设备。
  17. 根据权利要求16所述的装置,其特征在于,
    所述第一同步信号块还包括主同步信号和辅同步信号;以及
    所述第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
  18. 根据权利要求17所述的装置,其特征在于,
    所述第二同步信号块包括主同步信号和辅同步信号,所述第二同步信号中包括的主同步信号的频率带宽与所述第一同步信号块中包括的主同步信号的频率带宽相同,所述第二 同步信号中包括的辅同步信号的频率带宽与所述第一同步信号块中包括的辅同步信号的频率带宽相同。
  19. 根据权利要求18所述的装置,其特征在于,
    所述第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;
    所述第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,所述第一时域资源间隔和所述第二时域资源间隔不同。
  20. 根据权利要求17-19任一项所述的装置,其特征在于,所述第一同步信号块和所述第二同步信号块满足如下中的至少一种:
    所述第二同步信号块包括主同步信号,所述第二同步信号块中包括的主同步信号与所述第一同步信号块中包括的主同步信号的序列相同;
    所述第二同步信号块包括辅同步信号,所述第二同步信号块中包括的辅同步信号与所述第一同步信号块中包括的辅同步信号的序列相同;
    所述第二同步信号块包括主同步信号,所述第一同步信号块中包括的主同步信号对应的序列,与所述第二同步信号块中包括的主同步信号对应的序列不同;
    所述第二同步信号块包括辅同步信号,所述第一同步信号块中包括的辅同步信号对应的序列,与所述第二同步信号块中包括的辅同步信号对应的序列不同。
  21. 根据权利要求16-20任一项所述的装置,其特征在于,
    在一个周期内,所述第一同步信号块关联至少一个第二同步信号块,所述至少一个第二同步信号块包括所述第二同步信号块。
  22. 根据权利要求21所述的装置,其特征在于,所述第一同步信号块与所述至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
  23. 一种通信装置,其特征在于,包括:
    处理模块,用于生成第一同步信号块和第二同步信号块,所述第一同步信号块中的广播消息的频率带宽大于所述第二同步信号块中的广播消息的频率带宽;
    发送模块,用于发送所述第一同步信号块和所述第二同步信号块。
  24. 根据权利要求23所述的装置,其特征在于,
    所述第一同步信号块还包括主同步信号和辅同步信号;以及
    所述第二同步信号块还包括主同步信号或辅同步信号中的至少一种。
  25. 根据权利要求24所述的装置,其特征在于,
    所述第二同步信号块包括主同步信号和辅同步信号,所述第二同步信号中包括的主同步信号的频率带宽与所述第一同步信号块中包括的主同步信号的频率带宽相同,所述第二同步信号中包括的辅同步信号的频率带宽与所述第一同步信号块中包括的辅同步信号的频率带宽相同。
  26. 根据权利要求25所述的装置,其特征在于,所述第一同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第一时域资源间隔;
    所述第二同步信号块中包括的主同步信号和辅同步信号的时域资源间隔为第二时域资源间隔,其中,所述第一时域资源间隔和所述第二时域资源间隔不同。
  27. 根据权利要求24-26任一项所述的装置,其特征在于,所述第一同步信号块和所 述第二同步信号块满足如下中的至少一种:
    所述第二同步信号块包括主同步信号,所述第二同步信号块中包括的主同步信号与所述第一同步信号块中包括的主同步信号的序列相同;
    所述第二同步信号块包括辅同步信号,所述第二同步信号块中包括的辅同步信号与所述第一同步信号块中包括的辅同步信号的序列相同;
    所述第二同步信号块包括主同步信号,所述第一同步信号块中包括的主同步信号对应的序列,与所述第二同步信号块中包括的主同步信号对应的序列不同;
    所述第二同步信号块包括辅同步信号,所述第一同步信号块中包括的辅同步信号对应的序列,与所述第二同步信号块中包括的辅同步信号对应的序列不同。
  28. 根据权利要求23-27任一项所述的装置,其特征在于,
    在一个周期内,所述第一同步信号块关联至少一个第二同步信号块,所述至少一个第二同步信号包括所述第二同步信号块。
  29. 根据权利要求28所述的装置,其特征在于,在所述一个周期内,每个第一同步信号块关联的第二同步信号块的个数相同。
  30. 根据权利要求28或29所述的装置,其特征在于,所述第一同步信号块与所述至少一个第二同步信号块的时域资源间隔为预先定义或者预先配置的时域资源间隔。
  31. 一种通信装置,其特征在于,包括存储器和处理器,所述处理器执行所述存储器中的程序指令,用于实现权利要求1-7任一项所述的通信方法。
  32. 一种通信装置,其特征在于,包括存储器和处理器,所述处理器执行所述存储器中的程序指令,用于实现权利要求8-15任一项所述的通信方法。
  33. 一种存储介质,其特征在于,所述存储介质用于存储计算机程序,所述计算机程序被计算机或处理器执行时用于实现权利要求1-7任一项所述的通信方法。
  34. 一种存储介质,其特征在于,所述存储介质用于存储计算机程序,所述计算机程序被计算机或处理器执行时用于实现权利要求8-15任一项所述的通信方法。
PCT/CN2020/070474 2019-01-18 2020-01-06 通信方法、装置及设备 WO2020147603A1 (zh)

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