WO2018149051A1 - Procédé et dispositif de surveillance de signal de synchronisation - Google Patents

Procédé et dispositif de surveillance de signal de synchronisation Download PDF

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Publication number
WO2018149051A1
WO2018149051A1 PCT/CN2017/086630 CN2017086630W WO2018149051A1 WO 2018149051 A1 WO2018149051 A1 WO 2018149051A1 CN 2017086630 W CN2017086630 W CN 2017086630W WO 2018149051 A1 WO2018149051 A1 WO 2018149051A1
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WIPO (PCT)
Prior art keywords
synchronization signal
signal configuration
configuration information
cell
base station
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PCT/CN2017/086630
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English (en)
Chinese (zh)
Inventor
庄宏成
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780075799.2A priority Critical patent/CN110050490B/zh
Publication of WO2018149051A1 publication Critical patent/WO2018149051A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a method and a device for monitoring a synchronization signal.
  • LAA Licensed-Assisted Access
  • LTE Long Term Evolution
  • the carrier aggregation (CA) of the licensed band and the unlicensed band is adopted, that is, the licensed carrier in the licensed band is configured as the primary carrier, and configured.
  • the unlicensed carrier in the unlicensed band acts as a secondary carrier, which can expand the capacity of the Mobile Broadband network and improve the spectrum utilization of the system.
  • a base station using a secondary carrier can follow a Load-Based Equipment (LBE) Listening Before Talk (LBT) mechanism.
  • LBE Load-Based Equipment
  • LBT Listening Before Talk
  • the LBE mechanism is: when a base station using a secondary carrier needs to communicate with a terminal device, including transmitting data or a Synchronization Signal (SS), etc., before accessing a channel on the secondary carrier resource, Performing Clear Channel Assessment (CCA) detection on the channel, if the detection result is that the channel is idle, the base station can perform communication on the channel; if the detection result is that the channel is busy, the base station continues to perform the extended idle channel.
  • Evaluation Extended CCA, ECCA
  • the ECCA detects that the base station generates one CCA detection backoff number N, and the base station needs to perform communication on the channel when the detection result of the subsequent N times of CCA detection is that the channel is idle.
  • the mobile communication system adopting the NR technology supports flexible synchronization signal transmission, that is, the synchronization signal can be in the form of a SS block, a SS burst, and a SS burst set, and can be
  • the SS burst set includes multiple SS bursts, one SS burst contains multiple SS blocks, and one SS block contains multiple synchronization signals.
  • the base station when the carrier used by the base station is in a low frequency band (less than 6 gigahertz (GHz)), the base station can transmit the synchronization signal in an omnidirectional transmission mode.
  • the base station may transmit the synchronization signal by using a semi-omnidirectional transmission mode or a directional transmission mode.
  • a mobile communication system using both LAA technology and NR technology (which may be called LAA-NR) System)
  • the base station using the secondary carrier needs to use the LBT mechanism of the LBE for channel detection on the channel on the secondary carrier resource, and after determining that the channel access condition is met, a certain transmission mode can be adopted on the channel.
  • the terminal device in the LAA-NR system cannot determine the channel occupied by the base station using the secondary carrier to transmit the synchronization signal, and cannot determine the transmission mode of the transmission synchronization signal used by the base station, that is, the terminal device cannot determine which channel is on which channel.
  • the monitoring efficiency of the terminal device to monitor the synchronization signal is low, which further affects the access performance and service performance of the terminal device.
  • the embodiment of the present invention provides a method and a device for monitoring a synchronization signal, which are used to solve the problem that the monitoring efficiency of the monitoring signal of the terminal device in the LAA-NR system is low.
  • the embodiment of the present application provides a method for monitoring a synchronization signal, which is applicable to the mobile communication system shown in FIG. 4, and the method includes:
  • the controller After the controller receives the channel detection result of the license-free cell from the base station, determining synchronization signal configuration information of the license-free cell, where the channel detection result is used to notify the controller of the unlicensed carrier used by the license-free cell
  • the upper channel is idle, the unlicensed cell is a cell that is used by the base station to use an unlicensed carrier; the synchronization signal configuration information is used to indicate a manner in which the synchronization signal of the unlicensed cell is sent; and then, the controller And generating interception indication information including the identifier of the unlicensed carrier used by the license-free cell and the synchronization signal configuration information, and sending the interception indication information to the terminal device.
  • the interception indication information is sent to the terminal device, that is, the controller sends after determining that the base station detects that the channel is idle.
  • the monitoring indication information indicates that the terminal device monitors the synchronization signal.
  • the controller can accurately notify the terminal device in the system when to listen to the synchronization signal, and can prevent the terminal device from being unable to determine when
  • the phenomenon of monitoring the synchronization signal may also reduce the power consumption caused by the terminal device listening for the synchronization signal for a long time; and further, the identifier of the unlicensed carrier and the synchronization signal configuration information are included in the monitoring indication information,
  • the terminal device may monitor the synchronization signal in the channel on the unlicensed carrier according to the sending manner of the synchronization signal of the license-free cell indicated by the synchronization signal configuration information, and therefore, by using the method, the controller may further Notifying the terminal device how to monitor the synchronization signal by using the monitoring indication information, thereby ensuring The terminal apparatus can accurately monitor the synchronization signal.
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, thereby further The access performance and service performance of the terminal device are improved.
  • the controller allocates the unlicensed carrier to the unlicensed cell maintained by the base station, and sends the unlicensed carrier to the base station.
  • the identity of the license-free carrier is the identity of the license-free carrier.
  • the controller can control and manage the unlicensed carrier used by the license-free cell.
  • the controller may allocate the unlicensed carrier for the unlicensed cell in the following manner:
  • the controller allocates the unlicensed carrier to the unlicensed cell according to at least one of the following: a traffic volume in the unlicensed cell, a history of the license-free cell using the unlicensed carrier, and a received location A history of channel detection results of the license-exempt cell and remaining capacity of the license-exempt cell.
  • the controller allocates the unlicensed carrier to the base station, which can improve the utilization of the unlicensed carrier and improve the probability that the base station accesses the channel on the unlicensed carrier.
  • the controller may assign an unlicensed carrier to all of the unlicensed cells in the mobile communication system by way of the above design.
  • the controller can globally arrange the unlicensed carrier competition from the entire mobile communication system, reduce the probability that different license-free cells compete for the same unlicensed carrier (competition conflict), thereby improving the utilization of the unlicensed carrier, and the base station.
  • the probability of accessing a channel on an unlicensed carrier is not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to reduce the probability that different license-free cells compete for the same unlicensed carrier (competition conflict), thereby improving the utilization of the unlicensed carrier, and the base station.
  • the probability of accessing a channel on an unlicensed carrier reduce the probability that different license-free cells compete for the same unlicensed carrier (competition conflict), thereby improving the utilization of the unlicensed carrier, and the base station.
  • the controller may determine the synchronization signal configuration information by:
  • the first mode the controller determines, according to the correspondence between the identifier of the stored cell and the synchronization signal configuration information, the synchronization signal configuration information corresponding to the identifier of the license-free cell;
  • the second mode the controller determines the synchronization signal configuration information corresponding to the identifier of the license-free carrier according to the correspondence between the identifier of the stored license-free carrier and the synchronization signal configuration information;
  • the controller acquires the synchronization signal configuration information included in the channel detection result.
  • the controller can quickly and accurately determine the synchronization signal configuration information of the license-free cell.
  • the synchronization signal configuration information includes: a size and a beam direction of the synchronization signal block SS block, a size and a period of the synchronization signal batch SS burst, and a size and a period of the synchronization signal batch collection SS burst set.
  • the synchronization signal configuration information may indicate a transmission manner of the synchronization signal of the unlicensed cell by using the foregoing various pieces of information.
  • the synchronization signal configuration information is a synchronization signal configuration template identifier, wherein the synchronization signal configuration template identifier is used to determine a synchronization signal configuration template, and the synchronization signal configuration template includes: an SS block size and Beam direction, SS burst size and period, SS burst set size and period.
  • the synchronization signal configuration template can be determined, and then the foregoing information is determined, and the synchronization signal configuration information is used to indicate the manner in which the synchronization signal of the unlicensed cell is transmitted.
  • the controller sends the interception indication information to the terminal device, including:
  • the controller sends, to the terminal device, broadcast signaling, radio resource control RRC signaling, media access control MAC layer signaling, or physical layer control signaling that carries the interception indication information.
  • the controller may send the interception indication information to the terminal device by using broadcast signaling, RRC signaling, MAC layer signaling, or physical layer control signaling, and ensure that the mobile communication system is in the mobile communication system.
  • the terminal device may receive the interception indication information.
  • the embodiment of the present application further provides a method for monitoring a synchronization signal, where the method is applied to the mobile communication system shown in FIG. 4, the method includes:
  • the base station detects a channel on the unlicensed carrier used by the unlicensed cell, for example, the channel CCA detection or ECCA detection, the unlicensed cell is a cell maintained by the base station using an unlicensed carrier; the base station determines Decoding the configuration information of the unlicensed cell, the synchronization signal configuration information is used to indicate a transmission mode of the synchronization signal of the unlicensed cell; when the base station determines that the channel is idle, according to the synchronization signal configuration Information The manner of transmitting the synchronization signal is shown, occupying the channel to transmit a synchronization signal, and transmitting a channel detection result to the controller.
  • the base station After the method detects that the channel is idle, the base station sends a channel detection result to the controller to notify the controller that the channel on the unlicensed carrier used by the license-free cell is idle.
  • the controller may instruct the terminal device to start monitoring the synchronization signal of the license-free cell by sending the interception indication information to the terminal device. Therefore, by the above solution, the controller can accurately notify the terminal device in the mobile communication system when to listen to the synchronization signal, and can avoid the phenomenon that the terminal device cannot determine when to monitor the synchronization signal, and can also reduce the The power consumption caused by the terminal device listening to the synchronization signal for a long time.
  • the base station may determine the unlicensed carrier by:
  • the first mode the base station receives the identifier of the unlicensed carrier from the controller, and determines the unlicensed carrier according to the identifier of the unlicensed carrier;
  • the second mode the base station allocates the unlicensed carrier to the unlicensed cell.
  • the base station may determine the unlicensed carrier of the unlicensed cell, so that the channel on the unlicensed carrier may be detected.
  • the base station may determine the synchronization signal configuration information by:
  • the first mode the base station determines, according to the correspondence between the identifier of the stored cell and the synchronization signal configuration information, the synchronization signal configuration information corresponding to the identifier of the license-free cell;
  • the base station determines, according to the correspondence between the identifier of the stored unlicensed carrier and the synchronization signal configuration information, the synchronization signal configuration information corresponding to the identifier of the license-free carrier;
  • the base station acquires the preset synchronization signal configuration information in a scenario in which the controller or the configuration personnel presets the synchronization signal configuration information in the base station.
  • the base station can quickly and accurately determine the synchronization signal configuration information.
  • the synchronization signal configuration information is further included in the channel detection result.
  • the controller After the controller receives the channel detection result of the unlicensed cell from the base station, the synchronization signal configuration information included in the channel detection result may be acquired.
  • the synchronization signal configuration information includes: a size and a beam direction of the synchronization signal block SS block, a size and a period of the synchronization signal batch SS burst, and a size and a period of the synchronization signal batch collection SS burst set.
  • the base station may obtain the foregoing information included in the synchronization signal configuration information, so that the base station may subsequently send a synchronization signal according to each information in the synchronization signal configuration information.
  • the synchronization signal configuration information is a synchronization signal configuration template identifier, wherein the synchronization signal configuration template identifier is used to determine a synchronization signal configuration template, and the synchronization signal configuration template includes: an SS block size and Beam direction, SS burst size and period, SS burst set size and period.
  • the base station may determine the synchronization signal configuration template by determining the synchronization signal configuration information, and further obtain the foregoing information included therein, so that the base station may subsequently configure information according to the synchronization signal.
  • send a synchronization signal In the various information, send a synchronization signal.
  • the embodiment of the present application provides a method for monitoring a synchronization signal, which is applied to a mobile communication system as shown in FIG. 4, where the method includes:
  • the terminal device receives, from the controller, an identifier and a synchronization signal of the unlicensed carrier including the use of the license-free cell.
  • the monitoring indication information of the information, the unlicensed cell is a cell using the unlicensed carrier, the synchronization signal configuration information is used to indicate a transmission mode of the synchronization signal of the unlicensed cell; and then, the terminal device is configured according to the monitoring indication
  • the synchronization signal configuration information in the information monitors a synchronization signal in a channel on the unlicensed carrier corresponding to the identifier of the unlicensed carrier.
  • the terminal device After receiving the interception indication information sent by the controller, the terminal device starts to monitor the synchronization signal, and, because the monitoring indication information is determined by the controller, after the base station detects that the channel is idle, Therefore, the terminal device can determine when to listen to the synchronization signal by using the interception indication information, and can prevent the terminal device from determining whether to monitor the synchronization signal, and can also reduce the terminal device to listen for a long time.
  • the power consumption caused by the synchronization signal in addition, since the identifier of the license-free carrier and the synchronization signal configuration information are included in the interception indication information, the terminal device may perform the license-free indication according to the synchronization signal configuration information.
  • the controller may further notify the terminal device how to monitor the synchronization signal by using the monitoring indication information. Ensure that the terminal device can accurately monitor the synchronization signal .
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, thereby further The access performance and service performance of the terminal device are improved.
  • the synchronization signal configuration information includes: a size and a beam direction of the synchronization signal block SS block, a size and a period of the synchronization signal batch SS burst, and a size and a period of the synchronization signal batch collection SS burst set.
  • the terminal device may determine, by using the foregoing information included in the synchronization signal configuration information, a manner of transmitting the synchronization signal of the license-free cell.
  • the terminal device may monitor the synchronization signal in the channel according to the synchronization signal configuration information by using the following steps:
  • the terminal device monitors an SS burst Set in the channel according to the size and period of the SS burst set in the synchronization signal configuration information, and according to the size and the SS burst in the synchronization signal configuration information. Periodically listening to the SS burst in the SS burst set; and listening to the SS block in the SS burst according to the size and beam direction of the SS block in the synchronization signal configuration information, to obtain the SS block Synchronization signal.
  • the terminal device can monitor the synchronization signal according to the manner in which the synchronization signal of the license-free cell indicated by the synchronization signal configuration information is transmitted.
  • the synchronization signal configuration information is a synchronization signal configuration template identifier, wherein the synchronization signal configuration template identifier is in one-to-one correspondence with a synchronization signal configuration template, and the synchronization signal configuration template includes: a size of an SS block. And beam direction, SS burst size and period, SS burst set size and period;
  • the terminal device may determine the synchronization signal configuration template by using the synchronization signal configuration information, and further determine, according to the synchronization signal configuration information in the template, a manner of transmitting the synchronization signal of the license-free cell.
  • the terminal device may monitor the synchronization signal in the channel according to the synchronization signal configuration information by using the following steps:
  • Determining, by the terminal device, the template identifier according to the synchronization signal, the synchronization signal configuration template corresponding to the synchronization signal configuration template identifier; and the terminal device configuring the SS burst in the template according to the synchronization signal The size and period of the set, listening to the SS burst Set in the channel; and configuring the size and period of the SS burst in the template according to the synchronization signal, listening to the SS burst in the SS burst Set; and according to the SS block The size and beam direction, listening to the SS block in the SS burst, to obtain the synchronization signal in the SS block.
  • the terminal device can monitor the synchronization signal according to the manner in which the synchronization signal of the license-free cell indicated by the synchronization signal configuration information is transmitted.
  • the terminal device may receive the interception indication information from the controller in the following manner:
  • the terminal device receives broadcast signaling, radio resource control RRC signaling, media access control MAC layer signaling, or physical layer control signaling that carries the interception indication information from the controller.
  • the terminal device can receive the monitoring indication information sent by the controller.
  • the embodiment of the present application further provides a controller, which has a function of implementing controller behavior in the foregoing method instance.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the controller includes a receiving unit, a processing unit, and a sending unit, and the units may perform corresponding functions in the foregoing method examples.
  • the units may perform corresponding functions in the foregoing method examples.
  • the structures may perform corresponding functions in the foregoing method examples.
  • Narration refer to the detailed description in the method example. Narration.
  • the controller includes a transceiver, a processor, and a memory
  • the transceiver is configured to receive and transmit data
  • the processor is configured to support the controller to perform the foregoing method.
  • the memory is coupled to the processor, which stores program instructions (or applications) and data necessary for the controller.
  • the embodiment of the present application further provides a base station, where the base station has a function of implementing a behavior of a base station in the foregoing method instance.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the base station includes a receiving unit, a processing unit, and a sending unit, and the units may perform corresponding functions in the foregoing method examples.
  • the units may perform corresponding functions in the foregoing method examples.
  • the detailed description in the method example which is not described herein. .
  • the base station includes a transceiver, a processor, and a memory
  • the transceiver is configured to receive and transmit data
  • the processor is configured to support the base station to perform a corresponding one of the foregoing methods.
  • the memory is coupled to the processor, which stores program instructions (or applications) and data necessary for the base station.
  • the embodiment of the present application further provides a terminal device, where the terminal device has a function of implementing behavior of the terminal device in the foregoing method instance.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the terminal device includes a receiving unit and a processing unit, and the units can perform corresponding functions in the foregoing method examples.
  • the units can perform corresponding functions in the foregoing method examples.
  • the detailed description in the method example which is not described herein.
  • the structure of the terminal device includes a transceiver, a processor, and a memory
  • the transceiver is configured to receive and transmit data
  • the processor is configured to support the terminal device to perform the foregoing method.
  • the memory is coupled to the processor, which stores program instructions (or applications) and data necessary for the terminal device.
  • the embodiment of the present application further provides a computer storage medium, where the software program is stored in the storage medium,
  • the software program when read and executed by one or more processors, can implement the methods provided by any one of the first to sixth aspects and any of the above aspects.
  • the embodiment of the present application further provides a computer program product comprising instructions, when executed on a computer, causing the computer to perform the method described in the above aspects.
  • the controller after receiving the channel detection result, sends the interception indication information to the terminal device, that is, after the controller determines that the channel detects that the channel is idle. Sending the interception indication information, instructing the terminal device to monitor the synchronization signal.
  • the controller can accurately notify the terminal device in the system when the synchronization signal is monitored, and the terminal device can be prevented from determining the
  • the phenomenon of monitoring the synchronization signal may also reduce the power consumption caused by the terminal device listening for the synchronization signal for a long time; and further, the identifier of the unlicensed carrier and the synchronization signal configuration information are included in the monitoring indication information,
  • the terminal device may monitor the synchronization signal in the channel on the unlicensed carrier according to the transmission manner of the synchronization signal of the license-free cell indicated by the synchronization signal configuration information, and therefore, by using the scheme, the controller further
  • the monitoring indication information can be used to notify the terminal device how to monitor the synchronization signal, thereby ensuring Said terminal apparatus can accurately monitor the synchronization signal.
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, and further The access performance and service performance of the terminal device are improved.
  • FIG. 1 is a schematic diagram of an example of sending a first synchronization signal according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of an example of sending a second synchronization signal according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of an example of sending a third synchronization signal according to an embodiment of the present disclosure
  • FIG. 4 is a structural diagram of a mobile communication system according to an embodiment of the present application.
  • FIG. 5 is a flowchart of a method for monitoring a synchronization signal according to an embodiment of the present application
  • FIG. 6 is a flowchart of an example of a method for monitoring a synchronization signal according to an embodiment of the present application
  • FIG. 7 is a structural diagram of a first controller according to an embodiment of the present application.
  • FIG. 8 is a structural diagram of a first base station according to an embodiment of the present application.
  • FIG. 9 is a structural diagram of a first terminal device according to an embodiment of the present application.
  • FIG. 10 is a structural diagram of a second controller according to an embodiment of the present application.
  • FIG. 11 is a structural diagram of a second base station according to an embodiment of the present application.
  • FIG. 12 is a structural diagram of a second terminal device according to an embodiment of the present application.
  • the embodiment of the present invention provides a method and a device for monitoring a synchronization signal, which are used to solve the problem that the monitoring efficiency of the monitoring signal of the terminal device in the LAA-NR system is low.
  • the method and the device are based on the same inventive concept. Since the method and the device solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated. .
  • the base station in the LAA-NR system detects the channel on the unlicensed carrier used by the license-free cell, and detects that the channel is idle, according to the synchronization signal configuration information indication of the unlicensed cell.
  • the identifier of the unlicensed carrier used by the license-free cell and the synchronization signal configuration information are carried in the interception indication information and sent to the terminal device; the terminal device is receiving After the monitoring indication information is sent, the synchronization signal may be monitored on the channel on the unlicensed carrier according to the transmission manner of the synchronization signal of the license-free cell indicated by the synchronization signal configuration information.
  • the interception indication information is sent to the terminal device, that is, the controller sends after determining that the base station detects that the channel is idle.
  • the monitoring indication information instructs the terminal device to monitor the synchronization signal.
  • the controller can accurately notify the terminal device in the LAA-NR system when the synchronization signal is monitored, and the terminal device can be prevented from being unable to Determining when to listen to the synchronization signal, the power consumption caused by the terminal device listening for the synchronization signal for a long time may also be reduced; and the identifier of the unlicensed carrier and the synchronization signal configuration information are included in the monitoring indication information, Therefore, the terminal device can monitor the synchronization signal in the channel on the unlicensed carrier according to the transmission manner of the synchronization signal of the license-free cell indicated by the synchronization signal configuration information, and therefore, by using the scheme, the control The device may further notify the terminal device how to monitor the synchronization signal by using the monitoring indication information, and ensure The terminal apparatus can accurately monitor the synchronization signal.
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, and further The access performance and service performance of the terminal device are improved.
  • the base station involved in the embodiment of the present application is a device that accesses the terminal device to the wireless network, including but not limited to: an evolved Node B (eNB), a radio network controller (radio network controller, RNC). ), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (for example, Home evolved NodeB, or Home Node B, HNB), Baseband Unit (BBU), Access Point (AP), etc.
  • eNB evolved Node B
  • RNC radio network controller
  • NB Node B
  • BSC Base Station Controller
  • BTS Base Transceiver Station
  • Home Base Station for example, Home evolved NodeB, or Home Node B, HNB
  • BBU Baseband Unit
  • AP Access Point
  • a base station can maintain at least one cell.
  • the terminal device which is also referred to as a User Equipment (UE)
  • UE User Equipment
  • Equipment in-vehicle equipment, wearables, computing equipment, mobile stations (MS) or other processing equipment connected to a wireless modem.
  • MS mobile stations
  • the controller involved in the embodiment of the present application is a functional entity responsible for controlling and managing the terminal device in the LAA-NR system to monitor the synchronization signal.
  • the controller may also be responsible for the use and allocation of the unlicensed carrier in the LAA-NR system.
  • the controller may be a separate physical device with wireless communication function, capable of communicating with the base station and the terminal device in the LAA-NR system.
  • the controller may be integrated in a base station of the LAA-NR system, and implement the function of the controller by using a wireless communication function of the base station.
  • the unlicensed carrier involved in the embodiment of the present application is a carrier whose frequency is in an unlicensed frequency band.
  • the licensed carrier involved in this application is a carrier whose frequency is in the licensed frequency band.
  • the license-free cell involved in the embodiment of the present application is a cell using an unlicensed carrier.
  • the cell whose working channel is the channel on the unlicensed carrier is an unlicensed cell.
  • the base station to which the license-free cell belongs before transmitting the synchronization signal of the license-free cell, follows the LBE mechanism, and performs CCA on the channel on the unlicensed carrier used by the license-free cell. Detection or ECCA testing.
  • the licensed cell involved in the embodiment of the present application is a cell that uses a licensed carrier.
  • the method for transmitting the synchronization signal of the license-free cell defines a transmission rule that the base station follows when transmitting the synchronization signal of the license-free cell. For example, the beam direction when the base station transmits each synchronization signal, the timing of transmitting the synchronization signal, and the transmission form of the synchronization signal (such as SS block, SS burst, SS burst set, etc.).
  • Transmission mode 1 As shown in FIG. 1 , when the unlicensed carrier used by the license-free cell is less than 6 GHz, the base station of the license-free cell may use the omnidirectional transmission of the synchronization signal of the license-free cell, that is, the base station uses all The direction beam transmits the minimum granularity (SS block) of the synchronization signal. As shown in FIG. 1, the circle of the solid line below each SS block represents the beam of all directions used by the base station.
  • SS block minimum granularity
  • Transmission mode 2 when the unlicensed carrier used by the unlicensed cell is greater than 6 GHz, the base station of the license-free cell may transmit the synchronization signal of the unlicensed cell in a semi-omnidirectional manner, that is, the base station uses Beams in the same direction transmit SS blocks in the same SS burst, while beams in different directions are used to transmit different SS bursts.
  • a dotted circle below each SS block represents a beam in all directions
  • a circle formed by a solid line below each SS block represents a beam in a certain direction used by the base station.
  • the direction of the beam can be represented by the position of the solid circle relative to the dotted circle.
  • Transmission mode 3 As shown in FIG. 3, when the unlicensed carrier used by the unlicensed cell is greater than 6 GHz, the base station of the license-free cell may adopt a directional transmission of the synchronization signal of the license-free cell, that is, the base station uses different directions.
  • the beams transmit SS blocks within the same SS burst and use different directions of beams to transmit different SS bursts.
  • a dotted circle below each SS block represents a beam in all directions
  • an ellipse formed by a solid line below each SS block represents a beam in a certain direction used by the base station.
  • the direction of the beam can be represented by the position of the ellipse relative to the dotted circle.
  • the present embodiment does not limit the transmission manner of the synchronization signal according to the embodiment of the present application.
  • the transmission method of the synchronization signal in the embodiment of the present application may further include multiple transmission methods other than the present example.
  • the base station when the synchronization signal is transmitted in the transmission form (such as SS block, SS burst, SS burst set), the base station needs to determine at least the size and beam direction of the SS block, SS. The size and period of the burst, the size and period of the SS burst set, etc., so that the synchronization signal can be sent based on the above information.
  • the SS burst set includes multiple SS bursts, and one SS burst includes multiple SS blocks, and one SS block includes multiple synchronization signals.
  • the synchronization signal configuration information of the license-free cell is used to indicate a transmission mode of the synchronization signal of the license-free cell. Therefore, in the LAA-NR system, both the base station and the terminal device can determine the transmission mode of the synchronization signal of the unlicensed cell according to the synchronization signal configuration information. According to the above discussion of the transmission mode of the synchronization signal, both the base station and the terminal device can determine the size and beam direction of the SS block, the size and period of the SS burst, the size and period of the SS burst set, etc. according to the synchronization signal configuration information. information.
  • the synchronization signal configuration information may include the foregoing information, so that the base station and the terminal device may obtain the foregoing information directly after determining the synchronization signal configuration information.
  • the base station and the terminal device may maintain at least one synchronization signal configuration template, where each synchronization signal configuration template includes the foregoing information, and of course, the foregoing items included in different synchronization signal configuration templates The value of the information is different.
  • the synchronization signal configuration information may be configured with a template identifier for the synchronization signal, thereby reducing the information overhead of the synchronization signal configuration information and improving the transmission efficiency when transmitting the synchronization signal configuration information.
  • the remaining capacity of the license-exempt cell according to the embodiment of the present application is a capacity other than the occupied capacity of the total capacity of the license-free cell.
  • Multiple means two or more.
  • FIG. 4 shows an architecture of a possible mobile communication system to which the method for monitoring a synchronization signal provided by the embodiment of the present application is applicable, and the mobile communication system is a LAA-NR system.
  • the LAA-NR system includes: a controller 401, at least one base station 402 (base station 402a, base station 402b and base station 402c as shown in the figure), and a terminal device 403.
  • the LAA-NR system implements carrier aggregation through a licensed carrier and an unlicensed carrier, communication transmission is realized. Therefore, in the LAA-NR system, the licensed carrier is the primary carrier and the unlicensed carrier is the secondary carrier.
  • the cell using the licensed carrier (primary carrier) is the licensed cell (primary cell)
  • the cell using the unlicensed carrier (secondary carrier) is the unlicensed cell (secondary primary cell).
  • the cell maintained by base station 402a is a licensed cell
  • the cell maintained by base station 402b and base station 402c is an unlicensed cell.
  • the base station 402a to which the licensed cell belongs is used to implement functions such as initial access and cell handover of the terminal device 403.
  • the base station 402b or the base station 402c to which the unlicensed cell belongs is used to implement data transmission with the terminal device 403.
  • the base station 402b is only described as an example.
  • the terminal device 403 obtains the cell identifier of the license-free cell, and performs operations such as subsequent cell reselection, camping, random access, etc., the base station 402b needs to pass the cell identifier of the maintained unlicensed cell.
  • the sync signal is broadcast out.
  • the base station 402b needs to use the LBT mechanism for the channel on the unlicensed carrier (the working channel of the unlicensed cell) before transmitting the synchronization signal. After detecting and satisfying the channel access condition, the synchronization signal can be transmitted on the channel by using a certain synchronization signal transmission manner.
  • the base station 402b is configured to detect a channel on the unlicensed carrier used by the license-free cell, and when detecting that the channel is idle, according to the sending manner of the synchronization signal indicated by the synchronization signal configuration information of the license-free cell, occupying Transmitting, by the channel, a synchronization signal, and transmitting a channel detection result to the controller 401;
  • the controller 401 is configured to: after receiving the channel detection result, carry the identifier of the unlicensed carrier and the synchronization signal configuration information used by the license-free cell in the interception indication information, and send the information to the terminal device 403. .
  • the terminal device 403 may monitor the synchronization on the channel on the unlicensed carrier according to the manner in which the synchronization signal of the license-free cell indicated by the synchronization signal configuration information is sent. signal. Finally, the terminal device 403 can receive and read the system message of the unlicensed cell based on the monitored synchronization signal, thereby implementing subsequent operations such as cell reselection, camping, random access, and the like.
  • the controller since the controller receives the channel detection result, the terminal is sent to the terminal
  • the device sends the interception indication information, that is, the controller sends the interception indication information after the base station detects that the channel is idle, instructing the terminal device to monitor the synchronization signal, and therefore, the method provided by the embodiment of the present application provides
  • the controller can accurately notify the terminal device in the system when to listen to the synchronization signal, can prevent the terminal device from being able to determine when to monitor the synchronization signal, and can also reduce the long-term monitoring synchronization of the terminal device.
  • the terminal device may configure the information indication according to the synchronization signal
  • the manner of transmitting the synchronization signal of the unlicensed cell, the synchronization signal is monitored in the channel on the unlicensed carrier. Therefore, the controller may also use the monitoring indication information by using the mobile communication system provided by the embodiment of the present application. Notifying the terminal device how to monitor the synchronization signal, and ensuring the terminal setting Can accurately monitor the synchronization signal.
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, and further The access performance and service performance of the terminal device are improved.
  • the controller 401 may be a separate physical device having a wireless communication function, and is capable of communicating with the base station and the terminal device in the LAA-NR system.
  • the controller 401 can also be integrated in the base station 402 of the LAA-NR system. Since the controller 401 needs to communicate with the terminal device 403 (send monitoring indication information) before the terminal device 403 receives the synchronization signal of the license-free cell, the controller 401 can be integrated in the base station. In 402a, the interception indication information is sent to the terminal device 403 by using the wireless communication function of the base station 402a.
  • the embodiment of the present application provides a method for monitoring a synchronization signal, which may be, but is not limited to, applicable to a mobile communication system as shown in FIG. 4.
  • the process of the method includes:
  • the base station detects a channel on the unlicensed carrier used by the license-free cell, where the unlicensed cell is a cell that uses the unlicensed carrier maintained by the base station.
  • the base station is a base station that maintains an unlicensed cell, such as the base station 402b or the base station 402c in the mobile communication system shown in FIG.
  • the base station may maintain one cell, that is, the unlicensed cell; or the base station may maintain multiple cells, and the plurality of cells include the unlicensed cell.
  • the base station may perform detection on the channel by using a traditional LBE mechanism.
  • the base station may use the LBT mechanism of the LBE to detect the channel, and the specific process is as follows:
  • the base station performs CCA detection on the channel, and if the channel is detected to be idle, the channel can be accessed;
  • the base station If detecting that the channel is busy, the base station performs ECCA detection: the base station randomly generates an integer N in the set value range [1, q], and N is a CCA detection backoff number;
  • the base station needs to access the channel after the detection result of the subsequent N times of CCA detection is that the channel is idle.
  • the base station may also perform detection on the channel by using other methods in the LBT mechanism, for example, a frame detection method based on a frame structure.
  • the base station may also adopt other conventional channel detection mechanisms, which is not limited in this application.
  • the base station may determine the unlicensed carrier of the unlicensed cell by:
  • the first mode is: in a scenario where the controller allocates the unlicensed carrier to the unlicensed cell maintained by the base station, the controller sends an identifier of the unlicensed carrier to the base station; The controller receives the identifier of the license-free carrier, and determines the unlicensed carrier according to the identifier of the license-free carrier.
  • the second mode the base station allocates the unlicensed carrier to the unlicensed cell.
  • the base station may determine the unlicensed carrier of the unlicensed cell, so that the channel on the unlicensed carrier may be detected.
  • the controller allocates the unlicensed carrier to the base station by using the following steps:
  • the controller allocates the unlicensed carrier to the unlicensed cell according to at least one of the following: a traffic volume in the unlicensed cell, a history of the license-free cell using the unlicensed carrier, and a received location A history of channel detection results of the license-exempt cell and remaining capacity of the license-exempt cell.
  • the traffic may be represented by a load condition of the license-free cell or a number of terminal devices that have accessed the unlicensed cell.
  • the controller may allocate, for the unlicensed cell, m unlicensed carriers, when the traffic in the unlicensed cell is low.
  • the controller may allocate n unlicensed carriers for the unlicensed cell, where m>n, when the traffic threshold is set.
  • the control The device may preferentially allocate the unlicensed carrier x to the license-exempt cell.
  • the controller when the controller determines the received history of the channel detection result of the license-free cell, the channel detection result of receiving the unlicensed carrier y is idle more than the channel detection result of receiving other unlicensed carriers. For the number of idle times, the controller may preferentially allocate the unlicensed carrier y to the unlicensed cell.
  • the controller may allocate, for the unlicensed cell, 1 unlicensed carrier, when the unlicensed cell
  • the controller may allocate s unlicensed carriers for the unlicensed cell, where l>s.
  • the controller may set a priority according to the foregoing four factors until the allocation of the license-free cell The unlicensed carrier is good.
  • the controller allocates the unlicensed carrier to the base station in the foregoing manner, which may improve the utilization of the unlicensed carrier and improve the probability that the base station accesses the channel on the unlicensed carrier.
  • the controller may allocate an unlicensed carrier to all the unlicensed cells in the mobile communication system by using the foregoing manner. In this way, the controller can globally arrange the unlicensed carrier competition from the entire mobile communication system, reduce the probability that different license-free cells compete for the same unlicensed carrier (competition conflict), thereby improving the utilization of the unlicensed carrier, and accessing the base station. Probability of the channel on the unlicensed carrier.
  • the base station determines synchronization signal configuration information of the license-free cell, where the synchronization signal configuration information is used to indicate a manner in which the synchronization signal of the unlicensed cell is sent.
  • the base station may perform S502 by:
  • the first mode is: in a scenario where the base station stores the correspondence between the identifier of the cell that is maintained by the base station and the configuration information of the synchronization signal, the base station may determine, according to the correspondence between the identifier of the stored cell and the configuration information of the synchronization signal.
  • the synchronization signal configuration information corresponding to the identifier of the license-free cell.
  • the second mode is: in the scenario that the base station stores the correspondence between the identifier of the unlicensed carrier and the synchronization signal configuration information, the base station may determine, according to the correspondence between the identifier of the stored unlicensed carrier and the synchronization signal configuration information.
  • the synchronization signal configuration information corresponding to the identifier of the license-free carrier.
  • the base station acquires the preset synchronization signal configuration information in a scenario in which the controller or the configuration personnel presets the synchronization signal configuration information in the base station.
  • the base station can quickly and accurately determine the synchronization signal configuration information.
  • the description of the synchronization signal configuration information in the preamble indicates that the synchronization signal configuration information has the following at least two implementation manners:
  • the synchronization signal configuration information includes: the size and beam direction of the SS block, the size and period of the SS burst, and the size and period of the SS burst set.
  • the base station may obtain the foregoing information included in the synchronization signal configuration information, so that the base station may subsequently configure each information in the information according to the synchronization signal. , send a sync signal.
  • the second implementation manner is: the synchronization signal configuration information is a synchronization signal configuration template identifier, where the synchronization signal configuration template identifier is used to determine a synchronization signal configuration template, where the synchronization signal configuration template includes: SS block size and beam Direction, SS burst size and period, SS burst set size and period.
  • the controller maintains at least one synchronization signal configuration template, and each synchronization signal configuration template includes an SS block size and a beam direction, an SS burst size and a period, and an SS burst set size and
  • the values of the above information included in the different synchronization signal configuration templates are different.
  • the base station may determine, according to the identifier of the synchronization signal configuration template, a corresponding one synchronization signal configuration template.
  • the base station may determine the synchronization signal configuration template by determining the synchronization signal configuration information, and further obtain the foregoing information included therein, so that the base station may subsequently follow the
  • the synchronization signal is transmitted by synchronizing the information in the configuration information.
  • the synchronization signal configuration information is transmitted between the controller and the base station.
  • the information overhead of the synchronization signal configuration information transmitted by the controller and the base station may be reduced, and the transmission efficiency when the controller and the base station transmit the synchronization signal configuration information may be improved.
  • the controller sends the synchronization signal configuration information to the terminal device the information overhead of the monitoring indication information may be reduced, and the transmission efficiency of the controller to transmit the monitoring indication information is improved.
  • the base station determines, according to the detection that the channel is idle, according to a transmission manner of a synchronization signal indicated by the synchronization signal configuration information, occupies the channel transmission synchronization signal, and sends a channel detection result to the controller.
  • the controller receives the channel detection result of the license-free cell from the base station, where the channel detection result is used to notify the controller that the license-free cell uses the unlicensed carrier The channel is idle.
  • the base station and the controller may communicate through an Xn interface, for example, the base station may send a channel to the controller by using an Xn interface.
  • the detection result may be: the controller may also send information such as an identifier of the license-free cell to the base station through the Xn interface.
  • the base station may communicate with the controller by using a wireless connection or a physical connection between the base station and the controller. .
  • the controller determines synchronization signal configuration information of the license-free cell, where the synchronization signal configuration information is used to indicate a manner of sending the synchronization signal of the license-free cell.
  • the controller may determine configuration information of the synchronization signal in the following two manners:
  • the first mode the channel detection result sent by the base station to the controller includes the synchronization signal configuration information, and therefore, the controller receives the channel of the license-free cell from the base station. After the detection result, the synchronization signal configuration information included in the channel detection result may be acquired.
  • the base station may notify the controller of the manner in which the synchronization signal of the unlicensed cell is sent, so that the controller may notify the terminal device in the mobile communication system.
  • the second mode the controller determines, according to the correspondence between the identifier of the stored cell and the synchronization signal configuration information, the synchronization signal configuration information corresponding to the identifier of the license-free cell;
  • the controller determines the synchronization signal configuration information corresponding to the identifier of the license-free carrier according to the correspondence between the identifier of the stored license-free carrier and the synchronization signal configuration information.
  • the controller and the base station independently determine the synchronization signal configuration information of the license-free cell
  • the same manner such as the second mode or the third mode described above
  • the controller and the base station may be used. In this way, it can be ensured that the synchronization signal configuration information of the unlicensed cell determined by the controller and the base station is the same.
  • the controller may determine the synchronization signal configuration information when the unlicensed carrier is allocated for the license-free cell, and send the synchronization signal configuration information and the identifier of the unlicensed carrier to
  • the base station is configured to implement a manner of transmitting a synchronization signal of the unlicensed cell.
  • the controller generates interception indication information that includes the identifier of the unlicensed carrier used by the license-free cell and the synchronization signal configuration information, and sends the interception indication information to the terminal device.
  • the terminal device receives the interception indication information from the controller.
  • the controller may broadcast the monitoring indication information by using the following steps:
  • the controller may send, to the terminal device, broadcast signaling, Radio Resource Control (RRC) signaling, and Media Access Control (MAC) layer signaling that carries the interception indication information. Or physical layer control signaling.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the terminal device receives, from the controller, broadcast signaling, RRC signaling, MAC layer signaling, or physical layer control signaling that carries the interception indication information.
  • the terminal device may receive the monitoring indication information, thereby starting to monitor the synchronization signal, and determining, by using the synchronization signal configuration information in the monitoring indication information, how to send the synchronization signal, thereby determining how to monitor The synchronization signal.
  • the interception indication information may further include an identifier of the license-exempt cell to notify the cell of the unlicensed carrier used by the terminal device.
  • S506 The terminal device monitors a synchronization signal in a channel on the unlicensed carrier corresponding to the identifier of the unlicensed carrier according to the synchronization signal configuration information.
  • the synchronization signal configuration information has at least two implementations.
  • the terminal device performs S506 by using the following steps:
  • the terminal device monitors an SS burst Set in the channel according to the size and period of the SS burst set in the synchronization signal configuration information;
  • the SS block obtains the synchronization signal in the SS block.
  • the terminal device performs S506 by using the following steps:
  • the terminal device monitors an SS burst set in the channel according to the size and period of the SS burst set in the synchronization signal configuration template;
  • the synchronization signal configuration template maintained by the terminal device is the same as the synchronization signal configuration template maintained by the base station, so that the synchronization device configuration module determined by the terminal device and the base station may be the same.
  • the controller sends the interception indication information to the terminal device after receiving the channel detection result, that is, the controller determines the After detecting that the channel is idle, the base station sends the interception indication information, instructing the terminal device to monitor the synchronization signal. Therefore, by using the scheme, the controller can accurately notify the terminal device in the system when to monitor the synchronization signal. Preventing the terminal device from being able to determine when the synchronization signal is being monitored, and reducing the power consumption caused by the terminal device listening to the synchronization signal for a long time; and additionally, the identifier and the identifier of the unlicensed carrier are included in the interception indication information.
  • the controller may further notify the terminal setting by using the monitoring indication information. How to monitor the synchronization signal to ensure that the terminal can accurately monitor the synchronization signal.
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, thereby further The access performance and service performance of the terminal device are improved.
  • the mobile communication system shown in FIG. 4 can perform the above-mentioned monitoring method of the synchronization signal for each of the license-free cells, so that the terminal device in the mobile communication system can determine when and how to listen to the license-free license.
  • the synchronization signal of the cell can improve the monitoring efficiency of the terminal device to monitor the synchronization signal, thereby further improving the access performance and service performance of the terminal device.
  • an embodiment of the method for monitoring a synchronization signal is provided in the embodiment of the present application.
  • the example may be, but is not limited to, being applicable to the mobile communication system shown in FIG.
  • the N license-free cells are included: CELL1, CELL2, ... CELLN, and the base stations for maintaining the N license-free cells are respectively the base station 1, the base station 2, and the base station N.
  • FIG. 6 is only a schematic drawing. The base station 1 and the base station N are out, and other base stations are omitted.
  • the flow of the example includes:
  • S601 The controller allocates an unlicensed carrier for the unlicensed cell maintained by each base station. As shown, the controller allocates an unlicensed carrier 1 for CELL1 maintained by the base station 1, ..., and assigns an unlicensed carrier N to the CELLN maintained by the base station N.
  • the controller may allocate an unlicensed carrier for each license-exempt cell according to at least one of: a traffic volume in each unlicensed cell, a history of using the unlicensed carrier for each license-exempt cell, The history of the channel detection results of each of the unlicensed cells received, and the remaining capacity of each of the unlicensed cells.
  • the controller can globally arrange the unlicensed carrier competition from the entire mobile communication system, reduce the probability that different license-free cells compete for the same unlicensed carrier (competition conflict), thereby improving the utilization of the unlicensed carrier, and accessing the base station. Probability of the channel on the unlicensed carrier.
  • S602 The controller sends, to each base station, an identifier of an unlicensed carrier allocated for the unlicensed cell maintained by the base station. As shown, the controller transmits to the base station 1 an unlicensed carrier 1 assigned to CELL1, and the controller transmits to the base station N an unlicensed carrier N allocated for CELLN.
  • the controller may allocate multiple unlicensed carriers to one unlicensed cell. For example, the controller allocates the unlicensed carrier 1 and the unlicensed carrier 2 allocated to the unlicensed cell CELL2 maintained by the base station 2, and then the controller needs to send the CELL2 to the base station 2 when performing S602. Unlicensed carrier 1 and unlicensed carrier 2.
  • Each base station detects the channel on the unlicensed carrier used by the unlicensed cell maintained by each base station. As shown, the base station 1 detects channel 1 on the unlicensed carrier 1 used by CELL1, and the base station N detects the channel N on the unlicensed carrier N used by CELLN.
  • Each base station determines synchronization signal configuration information of the unlicensed cell maintained by each base station. As shown, the base station 1 determines the synchronization signal configuration information 1 of CELL1, and the base station N determines the synchronization signal configuration information N of the CELLN.
  • the base station 2 determines that the synchronization signal configuration information 2 of the CELL 2 includes synchronization signal configuration information for the unlicensed carrier 1 and synchronization signal configuration information for the unlicensed carrier 2.
  • At least one of the N base stations determines that when the channel is idle, according to the transmission manner of the synchronization signal indicated by the determined synchronization signal configuration information, the occupied channel transmits a synchronization signal, and sends a channel detection result to the controller.
  • the channel detection result is used to notify the controller that the channel on the unlicensed carrier used by the unlicensed cell maintained by the base station is idle.
  • the base station 1 determines that when the channel 1 is idle, according to the transmission mode of the synchronization signal indicated by the synchronization signal configuration information 1, the channel 1 transmits the synchronization signal of CELL1; and the base station N determines that the channel 1 is idle, according to the synchronization.
  • the transmission mode of the synchronization signal indicated by the signal configuration information 1 occupies the synchronization signal of the channel 1 to transmit CELL1.
  • the channel 3 transmits the synchronization signal of the CELL2 according to the transmission mode of the synchronization signal indicated by the synchronization signal configuration information for the unlicensed carrier 1; the base station 2 determines that the detection is detected.
  • the synchronization signal of the CELL2 is occupied by the channel 4 in accordance with the transmission method of the synchronization signal indicated by the synchronization signal configuration information for the unlicensed carrier 2.
  • the channel detection result sent by any one of the base stations includes the synchronization signal configuration information determined by the base station.
  • the channel detection result 1 transmitted by the base station 1 includes synchronization signal configuration information 1; the channel detection result N transmitted by the base station N includes synchronization signal configuration information N.
  • the channel detection result 2 transmitted by the base station 2 includes the synchronization signal configuration information 2.
  • the controller determines synchronization signal configuration information of the license-free cell according to the channel detection result of the received license-free cell. For example, the controller may determine the synchronization signal configuration information 1 of the CELL1 included therein according to the channel detection result 1, and determine the synchronization signal configuration information N of the CELLN included therein according to the channel detection result N.
  • the controller generates monitoring indication information, and broadcasts the monitoring indication information to a terminal device in the mobile communication system.
  • the interception indication information includes an unlicensed carrier identifier used by the unlicensed cell corresponding to the received channel detection result, and synchronization signal configuration information of the license-free cell.
  • the controller may generate the monitoring indication information according to the channel detection result received within a set time (such as within a set time period after performing S602 or within each indication period after S602), when the controller performs S607.
  • the interception indication information includes an unlicensed carrier identifier used by the unlicensed cell corresponding to the channel detection result received in the set time, and synchronization signal configuration information of the license-free cell.
  • the controller receives the channel detection result sent by the base station 1, the base station 2, and the base station N in a certain indication period, and the content included in the interception indication information is:
  • Unlicensed carrier 1 synchronization signal configuration information 1
  • synchronization signal configuration information for synchronization carrier 1 in synchronization signal configuration information 2 ;
  • Unlicensed carrier 2 synchronization signal configuration information for the unlicensed carrier 2 in the synchronization signal configuration information 2;
  • Unlicensed carrier N Unlicensed carrier N, synchronization signal configuration information N.
  • the content included in the interception indication information may be represented by Table 1:
  • the second and third lines are for CELL2.
  • the interception indication information may further include the identifier of the cell, as shown in Table 2:
  • the terminal device monitors the synchronization signal in a channel on the unlicensed carrier corresponding to the synchronization signal configuration information according to any synchronization signal configuration information in the monitoring indication information. As shown in the figure, the terminal device can monitor the synchronization signal of CELLi in channel i according to the synchronization signal configuration information i, and the value range of i is [1, N].
  • the terminal device may monitor the synchronization signal of CELL1 in channel 1 on the unlicensed carrier 1 according to the synchronization signal configuration 1.
  • the controller may perform the monitoring method of the synchronization signal according to a set execution period.
  • the controller may add a channel detection result of each unlicensed cell received in the execution period to a history record of the channel detection result of the corresponding license-free cell, so that the A history of channel detection results of each of the unlicensed cells received, an unlicensed carrier is allocated for each of the unlicensed cells.
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor synchronization signals of multiple cells in the mobile communication system, thereby improving the synchronization signal.
  • the terminal device monitors the monitoring efficiency of the synchronization signal, thereby further improving the accessibility of the terminal device. Energy and business performance.
  • the embodiment of the present application further provides a controller, which can be applied to the mobile communication system shown in FIG. 4, and can implement the monitoring of the synchronization signal in the embodiment shown in FIG. 5.
  • the controller 700 includes: a receiving unit 701, a processing unit 702, and a sending unit 703, where
  • the receiving unit 701 is configured to receive, by the base station, a channel detection result of the license-free cell, where the channel detection result is used to notify the controller that the channel on the unlicensed carrier used by the license-exempt cell is idle, and the unlicensed cell is a cell maintained by the base station using an unlicensed carrier;
  • the processing unit 702 is configured to determine synchronization signal configuration information of the license-free cell, where the synchronization signal configuration information is used to indicate a manner in which the synchronization signal of the unlicensed cell is sent;
  • the sending unit 703 is configured to send the interception indication information to the terminal device.
  • the processing unit 702 is further configured to: after the receiving unit 701 receives the channel detection result, allocate the unlicensed carrier to the unlicensed cell maintained by the base station;
  • the sending unit 703 is further configured to send the identifier of the license-free carrier to the base station.
  • processing unit 702 is specifically configured to: when the unlicensed carrier is allocated to the unlicensed cell:
  • Allocating the unlicensed carrier to the unlicensed cell according to at least one of the following: a traffic in the unlicensed cell, a history of the unlicensed cell using the unlicensed carrier, and the received unlicensed cell The history of channel detection results, the remaining capacity of the unlicensed cell.
  • the processing unit 702 is specifically configured to: when determining the synchronization signal configuration information:
  • the synchronization signal configuration information includes: a size and a beam direction of the synchronization signal block SS block, a size and a period of the SS burst of the synchronization signal, and a size and a period of the SS burst set of the synchronization signal batch; or
  • the synchronization signal configuration information is a synchronization signal configuration template identifier, where the synchronization signal configuration template identifier is used to determine a synchronization signal configuration template, and the synchronization signal configuration template includes: SS block size and beam direction, and SS burst size. And period, the size and period of the SS burst set.
  • the sending unit 703 is specifically configured to: when sending the interception indication information to the terminal device:
  • the controller after receiving the channel detection result sent by the base station, the controller sends the interception indication information to the terminal device, that is, the controller determines that the base station detects the After the channel is idle, the interception indication information is sent to the terminal device to monitor the synchronization signal. Therefore, the controller can accurately notify the terminal device in the system when the synchronization signal is monitored, and the terminal device can be avoided.
  • the power consumption caused by the monitoring of the synchronization signal by the terminal device for a long time may be reduced, and the identifier of the unlicensed carrier and the synchronization signal configuration information may be included in the monitoring indication information.
  • the controller can also The monitoring indication information is used to notify the terminal device how to monitor the synchronization signal, so that the terminal device can accurately monitor the synchronization signal.
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, thereby further The access performance and service performance of the terminal device are improved.
  • the embodiment of the present application further provides a base station, where the base station can be applied to the mobile communication system shown in FIG. 4, and can implement the synchronization signal monitoring method in the embodiment shown in FIG.
  • the base station 800 includes: a processing unit 801 and a sending unit 802, where
  • the processing unit 801 is configured to detect a channel on the unlicensed carrier used by the license-free cell, where the unlicensed cell is a cell that uses the unlicensed carrier maintained by the base station;
  • synchronization signal configuration information of the license-free cell Determining synchronization signal configuration information of the license-free cell, where the synchronization signal configuration information is used to indicate a transmission mode of the synchronization signal of the license-free cell;
  • the sending unit 802 is configured to: when the processing unit 801 determines that the channel is idle, according to the sending manner of the synchronization signal indicated by the synchronization signal configuration information, occupy the channel to send a synchronization signal, and send a channel to the controller. Test results.
  • the base station 800 further includes: a receiving unit 803, configured to receive an identifier of the license-free carrier from the controller, before the processing unit 801 detects a channel on the unlicensed carrier,
  • the processing unit 801 is specifically configured to: determine the unlicensed carrier according to the identifier of the unlicensed carrier;
  • the processing unit 801 is further configured to allocate the unlicensed carrier to the unlicensed cell before detecting the channel on the unlicensed carrier.
  • the processing unit 801 is specifically configured to: when determining the synchronization signal configuration information:
  • the channel detection result further includes the synchronization signal configuration information.
  • the synchronization signal configuration information includes: a size and a beam direction of the synchronization signal block SS block, a size and a period of the SS burst of the synchronization signal, and a size and a period of the SS burst set of the synchronization signal batch; or
  • the synchronization signal configuration information is a synchronization signal configuration template identifier, where the synchronization signal configuration template identifier is used to determine a synchronization signal configuration template, and the synchronization signal configuration template includes: SS block size and beam direction, and SS burst size. And period, the size and period of the SS burst set.
  • the base station after detecting that the channel is idle, the base station sends a channel detection result to the controller to notify the controller that the channel on the unlicensed carrier used by the license-free cell is idle.
  • the controller may instruct the terminal device to start monitoring the synchronization signal of the license-free cell by sending the interception indication information to the terminal device. Therefore, the controller can accurately notify the terminal device in the mobile communication system when to listen to the synchronization signal, and can prevent the terminal device from determining whether to monitor the synchronization signal, and can also reduce the terminal device.
  • the embodiment of the present application further provides a terminal device, which can be applied to the mobile communication system shown in FIG. 4, and can implement monitoring of the synchronization signal in the embodiment shown in FIG.
  • the method as shown in FIG. 9, the terminal device 900 includes: a receiving unit 901 and a processing unit 902, where
  • the receiving unit 901 is configured to receive, from the controller, the interception indication information, where the interception indication information includes an identifier of the unlicensed carrier used by the license-free cell and synchronization signal configuration information, where the license-free cell is a cell that uses the unlicensed carrier,
  • the synchronization signal configuration information is used to indicate a manner of transmitting the synchronization signal of the license-free cell;
  • the processing unit 902 is configured to monitor, according to the synchronization signal configuration information, a synchronization signal in a channel on the unlicensed carrier corresponding to the identifier of the unlicensed carrier.
  • the synchronization signal configuration information includes: a size and a beam direction of the synchronization signal block SS block, a size and a period of the synchronization signal batch SS burst, and a size and a period of the synchronization signal batch collection SS burst set;
  • the processing unit 902 is specifically configured to: when listening to the synchronization signal in the channel according to the synchronization signal configuration information:
  • the synchronization signal configuration information is a synchronization signal configuration template identifier, where the synchronization signal configuration template identifier is in one-to-one correspondence with a synchronization signal configuration template, where the synchronization signal configuration template includes: an SS block size and a beam direction. , SS burst size and period, SS burst set size and period;
  • the processing unit 902 is specifically configured to: when listening to the synchronization signal in the channel according to the synchronization signal configuration information:
  • the receiving unit 901 is specifically configured to: when receiving the interception indication information from the controller,
  • the terminal device after receiving the interception indication information sent by the controller, the terminal device starts to monitor the synchronization signal, and, after the monitoring indication information is determined by the controller, the base station detects that the channel is idle.
  • the device can be configured to determine when to listen to the synchronization signal by using the monitoring indication information, and the terminal device can be prevented from determining whether to monitor the synchronization signal, and the terminal device can be reduced for a long time.
  • the power consumption of the synchronization signal is monitored; and the identifier of the unlicensed carrier and the synchronization signal configuration information are included in the interception indication information, so the terminal device may perform the exemption according to the synchronization signal configuration information.
  • the controller may further notify the terminal device how to monitor the synchronization signal by using the monitoring indication information. , ensuring that the terminal device can accurately monitor the synchronization signal.
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, thereby further The access performance and service performance of the terminal device are improved.
  • the division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.
  • the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the embodiment of the present application further provides a computer storage medium, where the software program stores a software program, and the software program can implement the synchronization provided by the foregoing embodiment when being read and executed by one or more processors.
  • Signal monitoring method The computer storage medium may include: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code may be stored. Medium.
  • the embodiment of the present application further provides a computer program product including instructions, when it is run on a computer, causing the computer to perform the monitoring method of the synchronization signal provided by the foregoing embodiment.
  • the embodiment of the present application further provides a controller for implementing a synchronization signal monitoring method as shown in FIG. 5, having the function of the controller 700 as shown in FIG. 7.
  • the controller 1000 includes a transceiver 1001, a processor 1002, and a memory 1003.
  • the transceiver 1001, the processor 1002, and the memory 1003 are connected to each other.
  • the transceiver 1001, the processor 1002, and the memory 1003 are connected to each other by a bus 1004.
  • the bus 1004 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 10, but it does not mean that there is only one bus or one type of bus.
  • the transceiver 1001 is configured to receive and transmit data, and implement communication with other devices (such as a base station, a terminal device, etc.).
  • the processor 1002 is configured to implement a method for monitoring a synchronization signal as shown in FIG. 5, including:
  • the transceiver 1001 Receiving, by the transceiver 1001, a channel detection result of the license-free cell from the base station, where the channel detection result is used to notify the controller that the channel on the unlicensed carrier used by the license-free cell is idle, and the license-free cell is a cell maintained by the base station using an unlicensed carrier;
  • synchronization signal configuration information of the license-free cell Determining synchronization signal configuration information of the license-free cell, where the synchronization signal configuration information is used to indicate a transmission mode of the synchronization signal of the license-free cell;
  • interception indication information including the identifier of the unlicensed carrier used by the license-free cell and the synchronization signal configuration information, and sending the interception indication information to the terminal device by using the transceiver 1001.
  • processor 1002 is further configured to:
  • the identifier of the license-free carrier is transmitted to the base station by the transceiver 1001.
  • the processor 1002 is specifically configured to: when the unlicensed carrier is allocated to the unlicensed cell:
  • Allocating the unlicensed carrier to the unlicensed cell according to at least one of the following: a traffic in the unlicensed cell, a history of the unlicensed cell using the unlicensed carrier, and the received unlicensed cell The history of channel detection results, the remaining capacity of the unlicensed cell.
  • the processor 1002 is specifically configured to: when determining the synchronization signal configuration information:
  • the synchronization signal configuration information includes: a size and a beam direction of the synchronization signal block SS block, a size and a period of the SS burst of the synchronization signal, and a size and a period of the SS burst set of the synchronization signal batch; or
  • the synchronization signal configuration information is a synchronization signal configuration template identifier, where the synchronization signal configuration template identifier is used to determine a synchronization signal configuration template, and the synchronization signal configuration template includes: SS block size and beam direction, and SS burst size. And period, the size and period of the SS burst set.
  • the processor 1002 is specifically configured to:
  • Radio resource control RRC signaling radio resource control RRC signaling
  • media access control MAC layer signaling or physical layer control signaling carrying the interception indication information is sent to the terminal device by the transceiver 1001.
  • the memory 1003 is configured to store program instructions and the like.
  • program instructions may include program code, the program code including computer operating instructions.
  • the memory 1003 may include a random access memory (RAM), and may also include a non-volatile memory such as at least one disk storage.
  • the processor 1002 executes the program instructions stored in the memory 1003 to implement the above functions, thereby implementing the synchronization signal monitoring method provided by the above embodiments.
  • the controller after receiving the channel detection result sent by the base station, the controller sends the interception indication information to the terminal device, that is, the controller determines that the base station detects the After the channel is idle, the interception indication information is sent to the terminal device to monitor the synchronization signal. Therefore, the controller can accurately notify the terminal device in the system when the synchronization signal is monitored, and the terminal device can be avoided.
  • the power consumption caused by the monitoring of the synchronization signal by the terminal device for a long time may be reduced, and the identifier of the unlicensed carrier and the synchronization signal configuration information may be included in the monitoring indication information.
  • the terminal device may monitor the synchronization signal in the channel on the unlicensed carrier according to the sending manner of the synchronization signal of the license-free cell indicated by the synchronization signal configuration information, and therefore, by using the solution,
  • the controller may further notify, by using the monitoring indication information, how the terminal device monitors the synchronization signal.
  • the device ensures that the terminal can accurately monitor the synchronization signal.
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, and further The access performance and service performance of the terminal device are improved.
  • the embodiment of the present application further provides a base station, where the base station is configured to implement a synchronization signal monitoring method as shown in FIG. 5, and has the function of the base station 800 as shown in FIG. 8.
  • the base station 1100 includes a transceiver 1101, a processor 1102, and a memory 1103. Wherein the transceiver 1101, the processor 1102 and the memory 1103 are connected to each other.
  • the transceiver 1101, the processor 1102, and the memory 1103 are connected to each other through a bus 1104.
  • the bus 1104 can be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 11, but it does not mean that there is only one bus or one type of bus.
  • the transceiver 1101 is configured to receive and send data to implement communication with other devices (such as a controller, a terminal device).
  • devices such as a controller, a terminal device.
  • the processor 1102 is configured to implement a method for monitoring a synchronization signal as shown in FIG. 5, including:
  • the unlicensed cell being a cell maintained by the base station using an unlicensed carrier
  • synchronization signal configuration information of the license-free cell Determining synchronization signal configuration information of the license-free cell, where the synchronization signal configuration information is used to indicate a transmission mode of the synchronization signal of the license-free cell;
  • processor 1102 is further configured to:
  • the transceiver 1101 Before detecting the channel on the unlicensed carrier, receiving, by the transceiver 1101, an identifier of the license-free carrier from the controller, and determining the unlicensed carrier according to the identifier of the unlicensed carrier ;or
  • the processor 1102 is specifically configured to: when determining the synchronization signal configuration information:
  • the channel detection result further includes the synchronization signal configuration information.
  • the synchronization signal configuration information includes: a size and a beam direction of the synchronization signal block SS block, a size and a period of the SS burst of the synchronization signal, and a size and a period of the SS burst set of the synchronization signal batch; or
  • the synchronization signal configuration information is a synchronization signal configuration template identifier, where the synchronization signal configuration template identifier is used to determine a synchronization signal configuration template, and the synchronization signal configuration template includes: SS block size and beam direction, and SS burst size. And period, the size and period of the SS burst set.
  • the memory 1103 is configured to store program instructions and the like.
  • program instructions may include program code, the program code including computer operating instructions.
  • Memory 1103 may include RAM and may also include non-volatile memory, such as at least one disk storage.
  • the processor 1102 executes the program instructions stored in the memory 1103 to implement the above functions, thereby implementing the method for monitoring the synchronization signal provided by the foregoing embodiment.
  • the base station after detecting that the channel is idle, the base station sends a channel detection result to the controller to notify the controller that the channel on the unlicensed carrier used by the license-free cell is idle.
  • the controller may send the monitoring indication information to the terminal device, and instruct the terminal device to start monitoring the synchronization information of the license-free cell. number. Therefore, the controller can accurately notify the terminal device in the mobile communication system when to listen to the synchronization signal, and can prevent the terminal device from determining whether to monitor the synchronization signal, and can also reduce the terminal device.
  • the embodiment of the present application further provides a terminal device, which is used to implement a synchronization signal monitoring method as shown in FIG. 5, and has the function of the terminal device 900 as shown in FIG. 9.
  • the terminal device 1200 includes a transceiver 1201, a processor 1202, and a memory 1203.
  • the transceiver 1201, the processor 1202, and the memory 1203 are connected to each other.
  • the transceiver 1201, the processor 1202, and the memory 1203 are connected to each other through a bus 1204.
  • the bus 1204 may be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12, but it does not mean that there is only one bus or one type of bus.
  • the transceiver 1201 is configured to receive and send data to implement communication with other devices (such as a controller, a terminal device).
  • devices such as a controller, a terminal device.
  • the processor 1202 is configured to implement a method for monitoring a synchronization signal as shown in FIG. 5, including:
  • the monitoring indication information includes an identifier of an unlicensed carrier used by the license-free cell and synchronization signal configuration information, where the license-free cell is a cell using the unlicensed carrier,
  • the synchronization signal configuration information is used to indicate a manner of transmitting the synchronization signal of the license-free cell;
  • the synchronization signal configuration information includes: a size and a beam direction of the synchronization signal block SS block, a size and a period of the synchronization signal batch SS burst, and a size and a period of the synchronization signal batch collection SS burst set;
  • the processor 1202 is configured to: when the synchronization signal is monitored in the channel according to the synchronization signal configuration information, specifically:
  • the synchronization signal configuration information is a synchronization signal configuration template identifier, where the synchronization signal configuration template identifier is in one-to-one correspondence with a synchronization signal configuration template, where the synchronization signal configuration template includes: an SS block size and a beam direction. , SS burst size and period, SS burst set size and period;
  • the processor 1202 is configured to: when the synchronization signal is monitored in the channel according to the synchronization signal configuration information, specifically:
  • the processor 1202 is configured to: when receiving the interception indication information from the controller by using the transceiver 1201, specifically:
  • the transceiver 1201 Receiving, by the transceiver 1201, the broadcast signaling, the radio resource control RRC signaling, the medium access control MAC layer signaling, or the physical layer control signaling that carries the interception indication information from the controller.
  • the memory 1203 is configured to store program instructions and the like.
  • program instructions may include program code, the program code including computer operating instructions.
  • the memory 1203 may include RAM and may also include non-volatile memory, such as at least one disk storage.
  • the processor 1202 executes the program instructions stored in the memory 1203 to implement the above functions, thereby implementing the method for monitoring the synchronization signals provided by the foregoing embodiments.
  • the terminal device after receiving the interception indication information sent by the controller, the terminal device starts to monitor the synchronization signal, and, after the monitoring indication information is determined by the controller, the base station detects that the channel is idle.
  • the device can be configured to determine when to listen to the synchronization signal by using the monitoring indication information, and the terminal device can be prevented from determining whether to monitor the synchronization signal, and the terminal device can be reduced for a long time.
  • the power consumption of the synchronization signal is monitored; and the identifier of the unlicensed carrier and the synchronization signal configuration information are included in the interception indication information, so the terminal device may perform the exemption according to the synchronization signal configuration information.
  • the controller may further notify the terminal device how to monitor the synchronization signal by using the monitoring indication information. , ensuring that the terminal device can accurately monitor the synchronization letter .
  • the controller may send the monitoring indication information to the terminal device to notify the terminal device when and how to monitor the synchronization signal, thereby improving the monitoring efficiency of the terminal device to monitor the synchronization signal, and further The access performance and service performance of the terminal device are improved.
  • the embodiment of the present application provides a synchronization signal monitoring method and device, in which a base station in an LAA-NR system detects a channel on an unlicensed carrier used by an unlicensed cell, and detects When the channel is idle, according to the transmission mode of the synchronization signal indicated by the synchronization signal configuration information of the license-free cell, occupying the channel transmission synchronization signal, and transmitting a channel detection result to the controller; After the channel detection result is performed, the identifier of the unlicensed carrier used by the license-free cell and the synchronization signal configuration information are carried in the interception indication information and sent to the terminal device; the terminal device receives the interception indication After the information, the synchronization signal may be monitored on the channel on the unlicensed carrier according to the manner in which the synchronization signal of the unlicensed cell indicated by the synchronization signal configuration information is transmitted.
  • the interception indication information is sent to the terminal device, that is, the controller sends after determining that the base station detects that the channel is idle.
  • the monitoring indication information indicates that the terminal device monitors the synchronization signal.
  • the controller can accurately notify the terminal device in the system when to listen to the synchronization signal, and can prevent the terminal device from being unable to determine when
  • the phenomenon of monitoring the synchronization signal may also reduce the power consumption caused by the terminal device listening for the synchronization signal for a long time; and further, the identifier of the unlicensed carrier and the synchronization signal configuration information are included in the monitoring indication information,
  • the terminal device may monitor the synchronization signal in the channel on the unlicensed carrier according to the sending manner of the synchronization signal of the license-free cell indicated by the synchronization signal configuration information, and therefore, by using the scheme, the controller may further Notifying the terminal device how to monitor the synchronization signal by using the monitoring indication information, thereby ensuring The terminal apparatus can accurately monitor the synchronization signal.
  • the controller may notify the end by sending a monitoring indication information to the terminal device.
  • the monitoring efficiency of the terminal device to monitor the synchronization signal can be improved, and the access performance and service performance of the terminal device are further improved.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de surveillance de signal de synchronisation pour résoudre le problème de faible efficacité de surveillance lors de la surveillance d'un signal de synchronisation par un dispositif terminal dans un système LAA-NR. Le procédé comprend les étapes suivantes : lorsqu'il est détecté qu'un canal sur une porteuse sans licence utilisé par une cellule sans licence est au repos, une station de base occupant le canal envoie un signal de synchronisation, et envoie le résultat de détection de canal à un dispositif de commande ; après réception d'un résultat de détection de canal, le dispositif de commande transportant un identifiant de la porteuse sans licence utilisé par la cellule sans licence et des informations de configuration de signal de synchronisation dans des informations d'instruction de surveillance et envoyer les informations d'instruction de surveillance à un dispositif terminal ; une fois les informations d'instruction de surveillance reçues, le dispositif de terminal peut surveiller le signal de synchronisation sur le canal sur la porteuse sans licence selon les informations de configuration de signal de synchronisation. De cette manière, le dispositif de commande peut notifier au dispositif terminal à quel moment et comment surveiller le signal de synchronisation en envoyant les informations d'instruction de surveillance au dispositif terminal, de sorte que l'efficacité de surveillance du dispositif de terminal dans la surveillance du signal de synchronisation puisse être améliorée, et que les performances d'accès et les performances de service du dispositif de terminal puissent encore être améliorées.
PCT/CN2017/086630 2017-02-20 2017-05-31 Procédé et dispositif de surveillance de signal de synchronisation WO2018149051A1 (fr)

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