WO2022242551A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2022242551A1
WO2022242551A1 PCT/CN2022/092596 CN2022092596W WO2022242551A1 WO 2022242551 A1 WO2022242551 A1 WO 2022242551A1 CN 2022092596 W CN2022092596 W CN 2022092596W WO 2022242551 A1 WO2022242551 A1 WO 2022242551A1
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WIPO (PCT)
Prior art keywords
cell
reference signal
terminal device
signal
wake
Prior art date
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PCT/CN2022/092596
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English (en)
French (fr)
Inventor
晋英豪
马川
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 EP22803873.3A priority Critical patent/EP4354967A1/en
Publication of WO2022242551A1 publication Critical patent/WO2022242551A1/zh
Priority to US18/509,869 priority patent/US20240089857A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0235Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0203Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • H04W56/0015Synchronization between nodes one node acting as a reference for the others
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02Arrangements for increasing efficiency of notification or paging channel
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the technical field of communication, and in particular, to a communication method and a communication device.
  • the energy consumption of the base station mainly comes from the radio frequency module, and the power amplifier in the radio frequency module consumes the most energy.
  • the power amplifier in the radio frequency module of the base station is turned off. Then, the base station does not broadcast any message in the cell, thereby reducing energy consumption of the base station. For example, the base station does not broadcast the synchronization signal block (synchronization signal block, SSB) of the cell and the system information (system information, SI) of the cell.
  • synchronization signal block synchronization signal block, SSB
  • SI system information
  • the time delay for the terminal device to access the cell will be too large.
  • Embodiments of the present application provide a communication method and a communication device, which are used to reduce the time delay for a terminal device to access a cell and improve communication performance.
  • the first aspect of the embodiment of the present application provides a communication method, the method includes:
  • the terminal device receives a reference signal from the first cell; the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell; the terminal device sends a wake-up signal (wake- up signal, WUS), the wake-up signal is used to wake up the first cell to send SSB and/or SI.
  • WUS wake- up signal
  • the terminal device can perceive the first cell, synchronize with the first cell, and perform radio resource management measurement through the reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB corresponding to the first cell and the SI corresponding to the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first cell is saved.
  • the terminal device sends a wake-up signal to the first cell, where the wake-up signal is used to wake up the first cell to send the SSB and/or SI.
  • the first cell can start broadcasting the SSB and SI in time, so that the terminal device can quickly access the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the method further includes: the terminal device determines the first cell according to the reference signal.
  • the terminal device may determine the first cell according to the reference signal, so that the terminal device wakes up the first cell to access the first cell.
  • the reference signal includes at least one of the following information: an identifier of the first cell, a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, a beam index of the reference signal, and an index of the wake-up signal.
  • the terminal device may refer to the information to determine the first cell; or, the terminal device may refer to the information to determine the wake-up signal of the first cell and the time-frequency resource for sending the wake-up signal.
  • the terminal device can wake up the first cell, so that the terminal device accesses the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the terminal device sends a wake-up signal to the first cell, including:
  • the terminal device When the first condition is met, the terminal device sends a wake-up signal to the first cell;
  • the first condition includes at least one of the following: the terminal device determines to camp or access the first cell; the received power of the reference signal is greater than the threshold value; or, the reference signal is a reference signal corresponding to one or more cells received by the terminal device The reference signal with the highest received power.
  • the terminal device when the first condition is satisfied, sends a wake-up signal to the first cell.
  • the first cell can be prevented from frequently receiving wake-up signals from the terminal equipment, thereby improving the energy saving effect of the first cell.
  • the terminal device sends the reference signal to the access network The device sends a wakeup signal. It can be seen from this that the signal strength of the first cell that the terminal device can receive is relatively high. In this way, if the terminal device subsequently accesses the first cell, the first cell can provide better communication quality for the terminal device.
  • the reference signal includes the time-frequency resource for sending the wake-up signal and the characteristic parameters of the pseudo-random sequence used for the wake-up signal; the method also includes:
  • the terminal device generates a wake-up signal according to the characteristic parameters of the pseudo-random sequence used for the wake-up signal;
  • the terminal device sends a wake-up signal to the first cell, including:
  • the terminal device sends a wake-up signal to the first cell on the sending time-frequency resource.
  • a specific implementation manner in which the terminal device generates a wake-up signal and sends the wake-up signal is provided. It makes the program more feasible. In this way, the terminal device can generate and send a wake-up signal to wake up the first cell to broadcast SSB and/or SI. In this way, the terminal device quickly accesses the first cell, and communication performance is improved.
  • the wake-up signal includes a preamble for waking up the first cell to send the SSB and/or SI.
  • the terminal device wakes up the access network device to broadcast the SSB and/or SI in the first cell through a specific preamble.
  • the access network device may determine that the preamble is used to wake up the access network device to broadcast the SSB and/or SI in the first cell.
  • the terminal device does not need to access the first cell, and the terminal device can quickly wake up the access network device to broadcast the SSB and/or SI in the first cell. That is, the terminal device can quickly transmit information to the access network device.
  • the access network device can broadcast the SSB and/or SI in the first cell in time, which is beneficial for the terminal device to quickly access the first cell and reduce the access delay.
  • the method also includes:
  • the terminal device receives the SSB and/or SI from the first cell
  • the terminal device camps in the first cell according to the SSB and/or SI; or, the terminal device initiates random access in the first cell according to the SSB and/or SI; or, the terminal device resides in the first cell according to the SSB and/or the SI to sync.
  • the terminal device after the terminal device wakes up the first cell, the terminal device receives the SSB and/or SI of the first cell. In this way, the terminal device can camp on or access the first cell, or perform operations such as synchronization with the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell, including:
  • the number of time-domain symbols occupied by the reference signal is less than the sum of the number of time-domain symbols occupied by the SSB of the first cell and the SI of the first cell.
  • the number of time-domain symbols occupied by the reference signal is less than the sum of the number of time-domain symbols occupied by the SSB of the first cell and the SI of the first cell. That is, the power consumption of the access network device is reduced by turning off the symbol. In this way, the power consumption of the first cell for broadcasting the reference signal is relatively low, thereby saving energy consumption of the first cell.
  • the second aspect of the embodiment of the present application provides a communication method, the method includes:
  • the terminal device receives the reference signal from the access network device, and the time domain resource occupied by the reference signal is less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell; the terminal device sends a wake-up signal to the access network device, The wake-up signal is used to wake up the access network device to send SSB and/or SI in the first cell.
  • the terminal device can perceive the first cell, synchronize with the first cell, and perform radio resource management measurement through the reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB corresponding to the first cell and the SI corresponding to the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first cell is saved.
  • the terminal device sends a wake-up signal to the first cell, where the wake-up signal is used to wake up the first cell to send the SSB and/or SI.
  • the first cell can start broadcasting the SSB and SI in time, so that the terminal device can quickly access the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the method also includes:
  • the terminal device determines the first cell according to the reference signal.
  • the terminal device may determine the first cell according to the reference signal, so that the terminal device wakes up the first cell to access the first cell.
  • the reference signal includes at least one of the following information: an identifier of the first cell, a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, a beam index of the reference signal, and an index of the wake-up signal.
  • the terminal device may refer to the information to determine the first cell; or, the terminal device may refer to the information to determine the wake-up signal of the first cell and the time-frequency resource for sending the wake-up signal.
  • the terminal device can wake up the first cell, so that the terminal device accesses the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the terminal device sends a wake-up signal to the access network device, including:
  • the terminal device When the first condition is met, the terminal device sends a wake-up signal to the access network device;
  • the first condition includes at least one of the following: the terminal device determines to camp on or access the first cell; the received power of the reference signal is greater than the preset threshold value; or, the reference signal is received by the terminal device corresponding to one or more cells respectively A reference signal with the highest received power among the reference signals; or, the reference signal includes a paging indication; and the system information number included in the reference signal changes.
  • the terminal device when the first condition is met, the terminal device sends a wake-up signal to the access network device.
  • This can prevent the access network equipment from frequently receiving wake-up signals from the terminal equipment, thereby improving the energy saving effect of the access network equipment.
  • the terminal device sends the reference signal to the access network The device sends a wakeup signal. It can be seen from this that the signal strength of the first cell that the terminal device can receive is relatively high. In this way, if the terminal device subsequently accesses the first cell, the access network device can provide better communication quality for the terminal device.
  • the reference signal includes the time-frequency resource for sending the wake-up signal and the characteristic parameters of the pseudo-random sequence used for the wake-up signal; the method also includes:
  • the terminal device generates a wake-up signal according to the characteristic parameters of the pseudo-random sequence used for the wake-up signal;
  • the terminal device sends a wake-up signal to the access network device, including:
  • the terminal device sends a wake-up signal to the access network device on the sending time-frequency resource.
  • a specific implementation manner in which the terminal device generates a wake-up signal and sends the wake-up signal is provided. It makes the program more feasible. In this way, the terminal device can generate and send a wake-up signal to wake up the first cell to broadcast SSB and/or SI. In this way, the terminal device quickly accesses the first cell, and communication performance is improved.
  • the wake-up signal includes a preamble for waking up the first cell to send the SSB and/or SI.
  • the terminal device wakes up the access network device to broadcast the SSB and/or SI in the first cell through a specific preamble.
  • the access network device may determine that the preamble is used to wake up the access network device to broadcast the SSB and/or SI in the first cell.
  • the terminal device does not need to access the first cell, and the terminal device can quickly wake up the access network device to broadcast the SSB and/or SI in the first cell. That is, the terminal device can quickly transmit information to the access network device.
  • the access network device can broadcast the SSB and/or SI in the first cell in time, which is beneficial for the terminal device to quickly access the first cell and reduce the access delay.
  • the method also includes:
  • the terminal device receives the SSB and/or SI from the access network device;
  • the terminal device camps in the first cell according to the SSB and/or the SI; or, the terminal device initiates random access in the first cell according to the SSB and/or SI; or, the terminal device resides in the first cell according to the SSB and/or SI Cells are synchronized.
  • the terminal device after the terminal device wakes up the first cell, the terminal device receives the SSB and/or SI of the first cell. In this way, the terminal device can camp on or access the first cell, or perform operations such as synchronization with the first cell.
  • the third aspect of the embodiment of the present application provides a communication method, the method includes:
  • the access network device sends a reference signal to the terminal device; the access network device is the access network device to which the first cell belongs; the time domain resource occupied by the reference signal is less than the time domain occupied by the SSB of the first cell and the SI of the first cell.
  • the terminal device can perceive the first cell, synchronize with the first cell, and perform radio resource management measurement through the reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB corresponding to the first cell and the SI corresponding to the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first cell is saved.
  • the terminal device sends a wake-up signal to the first cell, where the wake-up signal is used to wake up the first cell to send SSB and/or SI.
  • the first cell can start broadcasting the SSB and SI in time, so that the terminal device can quickly access the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the reference signal includes at least one of the following information: the identity of the first cell, the system frame number where the reference signal is located, the half-frame indication, the index of the reference signal, the beam index of the reference signal, and the sending of the wake-up signal Time-frequency resources, characteristic parameters of the pseudo-random sequence used for the wake-up signal, or conditions for the terminal device to send the wake-up signal.
  • the terminal device may refer to the information to determine the first cell; or, the terminal device may refer to the information to determine the wake-up signal of the first cell and the time-frequency resource for sending the wake-up signal.
  • the terminal device can wake up the first cell, so that the terminal device accesses the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the method also includes:
  • the access network device sends the SSB and/or SI to the terminal device.
  • the access network device may send the SSB and/or SI. In this way, the terminal device can quickly access the first cell according to the SSB and/or SI, thereby improving communication performance.
  • the method also includes:
  • the access network device determines whether to start broadcasting SSB and/or SI in the first cell according to the first information
  • the access network device performs the step of sending the SSB and/or SI to the terminal device by the access network device;
  • the first information includes at least one of the following: load of the first cell, load of a neighbor cell of the first cell, or received power of a reference signal.
  • the access network device may comprehensively determine whether to start broadcasting SSB and/or Si. Thereby further improving the communication performance.
  • the reference signal includes the time-frequency resource for sending the wake-up signal and the characteristic parameters of the pseudo-random sequence used for the wake-up signal; the method also includes:
  • the access network device receives a wake-up signal from the terminal device on the sending time-frequency resource
  • the access network device determines the wake-up signal according to the characteristic parameters of the pseudo-random sequence used for the wake-up signal.
  • an implementation manner in which an access network device receives a wake-up signal and parses the wake-up signal is provided.
  • the access network device can receive and parse the wake-up signal according to this implementation manner. So that the access network device broadcasts the SSB and/or SI of the first cell in time. In this way, the terminal device can quickly access the first cell, thereby improving communication performance.
  • the wake-up signal includes a preamble for waking up the first cell to send the SSB and/or SI.
  • the terminal device wakes up the access network device to broadcast the SSB and/or SI in the first cell through a specific preamble.
  • the access network device may determine that the preamble is used to wake up the access network device to broadcast the SSB and/or SI in the first cell.
  • the terminal device does not need to access the first cell, and the terminal device can quickly wake up the access network device to broadcast the SSB and/or SI in the first cell. That is, the terminal device can quickly transmit information to the access network device.
  • the access network device can broadcast the SSB and/or SI in the first cell in time, which is beneficial for the terminal device to quickly access the first cell and reduce the access delay.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell, including:
  • the number of time-domain symbols occupied by the reference signal is less than the sum of the number of time-domain symbols occupied by the SSB of the first cell and the SI of the first cell.
  • the number of time-domain symbols occupied by the reference signal is less than the sum of the number of time-domain symbols occupied by the SSB of the first cell and the SI of the first cell. That is, the power consumption of the access network device is reduced by turning off the symbol. In this way, the power consumption of the first cell for broadcasting the reference signal is relatively low, thereby saving energy consumption of the first cell.
  • the fourth aspect of the embodiment of the present application provides a communication method, the method includes:
  • the terminal device receives the reference signal from the first cell, and the time domain resource occupied by the reference signal is less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell; the terminal device sends the measurement result to the second cell,
  • the measurement result is a measurement result obtained by the terminal device measuring the reference signal.
  • the terminal device senses the first cell through the reference signal of the first cell, synchronizes with the first cell, and performs radio resource management measurement.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first cell is saved.
  • the terminal device sends the measurement result obtained by the terminal device measuring the reference signal to the second cell. After the second cell acquires the measurement result, it may instruct the first cell to start broadcasting the SSB and/or SI in combination with the measurement result.
  • the above technical solution provides a means of triggering the second cell to instruct the first cell to start broadcasting the SSB and/or SI.
  • the above technical solution can enable the first cell to start broadcasting the SSB and/or SI in a timely manner. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the method also includes:
  • the terminal device receives configuration information from the second cell, where the configuration information is configuration information of the reference signal;
  • the terminal device sends the measurement result to the second cell, including:
  • the terminal device sends the measurement result to the second cell according to the configuration information.
  • the terminal device may send the measurement result in combination with the configuration information sent by the second cell. Therefore, it is ensured that the second cell can receive the measurement result. In this way, the second cell can instruct the first cell to enable SSB and/or SI in time. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the configuration information includes at least one of the following:
  • the physical random access channel physical random access channel, PRACH
  • the above implementation manner shows the specific content included in the configuration information, which provides a basis for the implementation of the solution.
  • the terminal device may determine the reporting condition for reporting the measurement result according to the configuration information.
  • the terminal device measures the reference signal according to the measurement period, and the time-frequency resource used for reporting the measurement result, etc.
  • This is beneficial for the second cell to receive the measurement result.
  • the second cell can instruct the first cell to enable SSB and/or SI in time. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the reference signal includes at least one of the following information:
  • An identifier of the first cell a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, or a beam index of the reference signal.
  • the terminal device may refer to the information to determine the first cell, so that the terminal device accesses the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the terminal device sends the measurement result to the second cell, including:
  • the terminal device sends the measurement result to the second cell;
  • the first condition includes at least one of the following: the received power of the reference signal in the measurement result is greater than the first threshold; or, any of the SSB of the second cell broadcast by the second cell, the channel state information reference signal, and the demodulation reference signal
  • the received power of a signal is less than a second threshold.
  • the terminal device when the first condition is met, the terminal device sends the measurement result to the second cell. Therefore, the second cell is prevented from frequently receiving measurement results from the terminal equipment, thereby improving the energy saving effect of the second cell.
  • the received power of the reference signal is greater than the first threshold, and/or, the received power of any one of the SSB of the second cell, the channel state information reference signal and the demodulation reference signal broadcast by the second cell If the value is smaller than the second threshold, the terminal device sends the measurement result to the second cell. It can be seen from this that the signal strength of the first cell that the terminal device can receive is relatively high. In this way, if the terminal device subsequently accesses the first cell, the first cell can provide better communication quality for the terminal device.
  • the measurement result includes at least one of the following: the identity of the first cell, or the received power of the reference signal.
  • the second cell can determine the received power of the first cell and the reference signal through the content included in the measurement result. In this way, the second cell may instruct the first cell to start broadcasting the SSB and/or SI. Therefore, the terminal device can quickly access the first cell, the time delay for the terminal device to access the cell is reduced, and the communication performance is improved.
  • the method further includes:
  • the terminal device receives the SSB and/or SI from the first cell
  • the terminal device camps on the first cell according to the SSB and/or SI; or, the terminal device initiates random access in the first cell according to the SSB and/or SI; or, the terminal device resides in the first cell according to the SSB and/or SI to sync.
  • the first cell broadcasts the SSB and/or SI.
  • the terminal device may receive the SSB and/or SI of the first cell. In this way, the terminal device can camp on or access the first cell, or perform operations such as synchronization with the first cell.
  • the fifth aspect of the embodiment of the present application provides a communication method, the method includes:
  • the terminal device receives the reference signal from the first access network device, the first access network device is the access network device of the first cell, and the time domain resource occupied by the reference signal is less than the SSB of the first cell and the SI of the first cell
  • the sum of occupied time domain resources the terminal device sends a measurement result to the second access network device, and the measurement result is a measurement result obtained by the terminal device measuring the reference signal.
  • the terminal device senses the first cell through the reference signal of the first cell, synchronizes with the first cell, and performs radio resource management measurement.
  • the time domain resource occupied by the reference signal is less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first access network device is saved.
  • the terminal device sends the measurement result obtained by the terminal device measuring the reference signal to the second access network device.
  • the second access network device may instruct the first access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell in the first cell in combination with the measurement result. That is, the above technical solution provides a means of triggering the second access network device to instruct the first access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell. For a terminal device to access the first cell, the above technical solution can enable the first access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell in a timely manner. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the method also includes:
  • the terminal device receives configuration information from the second access network device, where the configuration information is configuration information of the reference signal;
  • the terminal device sends the measurement result to the second access network device, including:
  • the terminal device sends the measurement result to the second access network device according to the configuration information.
  • the terminal device may send the measurement result in combination with the configuration information sent by the second access network device. Therefore, it is ensured that the second access network device can receive the measurement result. In this way, the second access network device timely instructs the first access network device to enable SSB and/or SI. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the configuration information includes at least one of the following:
  • the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result is the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result.
  • the above implementation manner shows the specific content included in the configuration information, which provides a basis for the implementation of the solution.
  • the terminal device may determine the reporting condition for reporting the measurement result according to the configuration information.
  • the terminal device measures the reference signal according to the measurement period, and the time-frequency resource used for reporting the measurement result, etc.
  • This is beneficial for the second cell to receive the measurement result.
  • the second cell can instruct the first cell to enable SSB and/or SI in time. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the reference signal includes at least one of the following information:
  • An identifier of the first cell a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, or a beam index of the reference signal.
  • the terminal device may refer to the information to determine the first cell, so that the terminal device accesses the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the terminal device sends the measurement result to the second access network device, including:
  • the terminal device sends the measurement result to the second access network device;
  • the first condition includes at least one of the following: the received power of the reference signal in the measurement result is greater than the first threshold; or, the synchronization signal block SSB and channel corresponding to the second cell broadcast by the second access network device in the second cell
  • the received power of any one of the state information reference signal and the demodulation reference signal is less than the second threshold.
  • the terminal device when the first condition is satisfied, the terminal device sends the measurement result to the second access network device. Therefore, it is avoided that the second access network device frequently receives measurement results from the terminal device, thereby improving the energy saving effect of the second cell.
  • the received power of the reference signal is greater than the first threshold, and/or, the received power of any one of the SSB of the second cell, the channel state information reference signal and the demodulation reference signal broadcast by the second cell If the value is less than the second threshold, the terminal device sends the measurement result to the second access network device. It can be seen from this that the signal strength of the first cell that the terminal device can receive is relatively high. In this way, if the terminal device subsequently accesses the first cell, the first cell can provide better communication quality for the terminal device.
  • the measurement result includes at least one of the following: the identity of the first cell, or the received power of the reference signal.
  • the second access network device may determine the received power conditions of the first cell and the reference signal according to the content included in the measurement result. In this way, the second access network device may instruct the first access network device to start broadcasting the SSB and/or SI. Therefore, the terminal device can quickly access the first cell, the time delay for the terminal device to access the cell is reduced, and the communication performance is improved.
  • the method further includes:
  • the terminal device receives the SSB and/or SI from the first access network device
  • the terminal device camps on the first cell according to the SSB and SI; or, the terminal device initiates random access in the first cell according to the SSB and SI; or, the terminal device performs synchronization in the first cell according to the SSB and SI.
  • the first access network device broadcasts the SSB and/or SI in the first cell.
  • the terminal device may receive the SSB and/or SI of the first cell. In this way, the terminal device can camp on or access the first cell, or perform operations such as synchronization with the first cell.
  • the sixth aspect of the embodiment of the present application provides a communication method, the method includes:
  • the first access network device sends a reference signal to the terminal device, the first access network device is the access network device to which the first cell belongs, and the time domain symbols occupied by the reference signal are less than the SSB of the first cell and the SI of the first cell
  • the sum of occupied time domain resources the first access network device receives indication information from the second access network device, the indication information is used to instruct the first access network device to start broadcasting SSB and/or SI in the first cell; the first The access network device broadcasts the SSB and/or SI in the first cell according to the indication information.
  • the terminal device senses the first cell through the reference signal of the first cell, synchronizes with the first cell, and performs radio resource management measurement.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first access network device is saved.
  • the first access network device receives the indication information, so that the first access network device can start broadcasting the SSB and/or SI in the first cell in time. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the reference signal includes at least one of the following information:
  • An identifier of the first cell a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, or a beam index of the reference signal.
  • the terminal device may refer to the information to determine the first cell, so that the terminal device accesses the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the seventh aspect of the embodiment of the present application provides a communication method, including:
  • the second access network device receives the measurement result from the terminal device; the measurement result is the measurement result obtained by the terminal device measuring the reference signal of the first cell, and the time domain symbols occupied by the reference signal are less than the SSB of the first cell and the SSB of the first cell.
  • the sum of time domain resources occupied by SI; the second access network device sends indication information to the first access network device, the first access network device is the access network device to which the first cell belongs, and the indication information is used to indicate that the first access network device
  • the network access device starts broadcasting the SSB and/or SI in the first cell.
  • the terminal device senses the first cell through the reference signal of the first cell, synchronizes with the first cell, and performs radio resource management measurement.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first access network device is saved.
  • the second access network device sends indication information to the first access network device. In this way, the first access network device can start broadcasting the SSB and/or SI in the first cell in time. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the method also includes:
  • the second access network device sends configuration information to the terminal device, where the configuration information is configuration information of the reference signal, and the configuration information is used for the terminal device to send measurement results.
  • the second access network device sends configuration information to the terminal device.
  • the terminal device can send the measurement result in combination with the configuration information. Therefore, it is ensured that the second access network device can receive the measurement result.
  • the second access network device timely instructs the first access network device to enable SSB and/or SI. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the configuration information includes at least one of the following:
  • the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result is the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result.
  • the above implementation manner shows the specific content included in the configuration information, which provides a basis for the implementation of the solution.
  • the terminal device may determine the reporting condition for reporting the measurement result according to the configuration information.
  • the terminal device measures the reference signal according to the measurement period, and the time-frequency resource used for reporting the measurement result, etc.
  • This is beneficial for the second access network device to receive the measurement result.
  • the second access network device can timely instruct the first access network device to enable the SSB and/or SI in the first cell. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the measurement result includes at least one of the following: the identity of the first cell, or the received power of the reference signal.
  • the second access network device may determine the received power conditions of the first cell and the reference signal according to the content included in the measurement result. In this way, the second access network device may instruct the first access network device to start broadcasting the SSB and/or SI. Therefore, the terminal device can quickly access the first cell, the time delay for the terminal device to access the cell is reduced, and the communication performance is improved.
  • the reference signal includes at least one of the following information:
  • An identifier of the first cell a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, or a beam index of the reference signal.
  • the terminal device may refer to the information to determine the first cell, so that the terminal device accesses the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the method also includes:
  • the second access network device determines whether to instruct the first access network device to start broadcasting SSB and/or SI in the first cell;
  • the second access network device executes the step of sending the indication information to the first access network device by the second access network device.
  • the second access network device may first determine whether to instruct the first access network device to start broadcasting the SSB and/or SI in the first cell. Thereby further improving the communication performance. For example, the second access network device may determine whether to instruct the first access network device to start broadcasting SSB in the first cell based on the load condition of the first cell, the load condition of the second cell, and the received power of the reference signal of the first cell. and/or SI. Thereby improving communication performance.
  • the eighth aspect of the embodiment of the present application provides a communication method, including:
  • the terminal device receives the reference signal from the first cell; the first cell is a cell associated with the second cell, and the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell;
  • the terminal device receives the access information from the second cell, and the access information includes the access information of the first cell; the terminal device determines the candidate access cell, and the candidate access cell is selected from the first cell according to the access information and the reference signal of.
  • the terminal device senses the first cell through the reference signal of the first cell, synchronizes with the first cell, and performs radio resource management measurement.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first cell is saved.
  • the terminal device acquires the access information of the first cell from the second cell. In this way, the terminal device can select a candidate access cell to access according to the access information and the reference signal of the first cell. Thus, the terminal device quickly accesses the candidate access cell.
  • the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the first cell is located on a first carrier
  • the second cell is located on a second carrier, so the first carrier is different from the second carrier.
  • the above implementation manners provide applicable scenarios of this application.
  • the first cell and the second cell may be cells on different carriers.
  • the terminal device can only access or camp on the second cell, and select a candidate access cell from the first cell by receiving the access information of the second cell.
  • the first cell does not need to broadcast the SSB and/or SI, thereby saving energy consumption of the first cell.
  • the access information includes at least one of the following:
  • the identity of the first cell, the index of the first cell, the channel number of the first cell, the priority of the first cell, the start time domain position of the reference signal relative to the start time domain position or end time of the SSB of the second cell The offset of the domain position, the identifier of the network supported by the first cell, the random access parameter of the first cell, the selection parameter of the first cell, or the reselection parameter of the first cell.
  • the terminal device can select and access candidate access cells according to the access information. Then the first cell does not need to broadcast the SSB and/or SI, thereby reducing the energy consumption of the first cell. Moreover, the terminal device can quickly access the candidate access cell according to the access information, thereby reducing the time delay for the terminal device to access the cell and improving communication performance.
  • the method further includes: the terminal device sends a first request to the second cell, where the first request is used to request the second cell to send access information.
  • the terminal device may request the access information of the first cell from the second cell. In this way, it can prevent the second cell from broadcasting the access information of the first cell all the time, and reduce the broadcast amount of the second access network device. Thereby, the energy consumption expense of the second cell is further saved, and the energy saving effect is improved.
  • the terminal device sends the first request to the second cell, including:
  • the terminal device sends the first request to the second cell by using a preamble or a radio resource control (radio resource control, RRC) system request message.
  • RRC radio resource control
  • two bearers for the terminal device to send the first request are provided, which provides a basis for implementation of the solution.
  • the terminal device sends the first request to the second cell by using the preamble, and the terminal device does not need to access the second cell.
  • the terminal device can quickly transmit information to the second cell, so that the terminal device can quickly obtain the access information of the first cell. This is beneficial for the terminal device to quickly select a candidate access cell and access the candidate access cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the terminal device sends the first request to the first cell, including:
  • the terminal device When the terminal device detects that there is a reference signal with received power greater than or equal to the threshold value among the reference signals of the first cell, the terminal device sends a first request to the second cell.
  • the terminal device when the terminal device detects that the received power of the reference signal is greater than the threshold value, the terminal device requests the access information of the first cell from the second cell. This can prevent the terminal device from frequently requesting the access information of the first cell from the second cell, thereby saving energy consumption of the second cell.
  • the received power of the reference signal is greater than the threshold value, it indicates that the terminal device receives a relatively high signal strength of the cell corresponding to the reference signal. In this way, if the terminal device subsequently accesses the cell, the cell can provide better communication quality for the terminal device. Thereby improving communication performance.
  • the first cell is a data component carrier (data component carrier, DCC) cell
  • the second cell is a basic component carrier (basic component carrier, BCC) cell
  • the first cell is a cell associated with the second cell All DCC cells; or, the first cell is part of the DCC cells associated with the second cell.
  • the first cell may be part or all of the DCC cells associated with the second cell.
  • the second cell may broadcast access information of all cells associated with the second cell by default. This makes it convenient for the terminal device to select and access candidate access cells from the first cell according to the access information.
  • the second cell may broadcast the access information of a cell with a higher priority among the cells associated with the second cell. That is, the first cell includes some cells associated with the second cell. Therefore, the broadcast volume of the second cell is reduced, and the broadcast energy consumption of the second cell is saved.
  • the method also includes:
  • the terminal device receives indication information from the second cell, where the indication information is used to indicate that the second cell is a BCC cell.
  • the second cell may use indication information to indicate that the second cell is a BCC cell.
  • the terminal device can request the access information of the first cell from the second cell. In order to facilitate the terminal equipment to quickly access the candidate access cell.
  • the method also includes:
  • the terminal device initiates random access to the candidate access cell through the random access resource of the candidate access cell.
  • the terminal device when the terminal device has data to be sent, the terminal device can quickly access the candidate access cell. In this way, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the access information includes the SI corresponding to the first cell.
  • the access information may be the SI of the first cell.
  • the terminal device can determine the SI of the candidate access cell and quickly access the candidate access cell. Thereby improving communication performance.
  • a ninth aspect of the embodiment of the present application provides a communication method, including:
  • the terminal device receives the reference signal from the first access network device; the first access network device is the access network device to which the first cell belongs, and the time domain resources occupied by the reference signal are less than the SSB of the first cell and the SSB of the first cell
  • the sum of the time domain resources occupied by SI the terminal device receives the access information from the second access network device, the access information includes the access information of the first cell, and the second access network device is the access network to which the second cell belongs
  • a network device the first cell is a cell associated with the second cell; the terminal device determines a candidate access cell, and the candidate access cell is selected from the first cell according to the access information and the reference signal.
  • the terminal device senses the first cell through the reference signal of the first cell, synchronizes with the first cell, and performs radio resource management measurement.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first access network device is saved.
  • the terminal device acquires the access information of the first cell from the second access network device. In this way, the terminal device can select a candidate access cell to access according to the access information and the reference signal of the first cell. Thus, the terminal device quickly accesses the candidate access cell. The time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the first cell is located on a first carrier
  • the second cell is located on a second carrier
  • the first carrier is different from the second carrier
  • the above implementation manners provide applicable scenarios of this application.
  • the first cell and the second cell may be cells on different carriers.
  • the terminal device can only access or camp on the second cell, and select a candidate access cell from the first cell by receiving the access information of the second cell.
  • the first cell does not need to broadcast the SSB and/or SI, thereby saving energy consumption of the first cell.
  • the access information includes at least one of the following:
  • the identity of the first cell, the index of the first cell, the channel number of the first cell, the priority of the first cell, the start time domain position of the reference signal relative to the start time domain position or end time of the SSB of the second cell The offset of the domain position, the identifier of the network supported by the first cell, the random access parameter of the first cell, the selection parameter of the first cell, or the reselection parameter of the first cell.
  • the terminal device can select and access candidate access cells according to the access information. Then the first cell does not need to broadcast the SSB and/or SI, thereby reducing the energy consumption of the first cell. Moreover, the terminal device can quickly access the candidate access cell according to the access information, thereby reducing the time delay for the terminal device to access the cell and improving communication performance.
  • the method also includes:
  • the terminal device sends a first request to the second access network device, where the first request is used to request the second access network device to send access information.
  • the terminal device may request the access information of the first cell from the second access network device.
  • the second access network device can prevent the second access network device from broadcasting the access information of the first cell all the time, and reduce the broadcast amount of the second access network device. Therefore, the energy consumption of the second access network device is further saved, and the energy saving effect is improved.
  • the terminal device sends the first request to the second access network device, including:
  • the terminal device sends the first request to the second access network device by using a preamble or an RRC system request message.
  • two bearers for the terminal device to send the first request are provided, which provides a basis for implementation of the solution.
  • the terminal device sends the first request to the second access network device by using the preamble, and the terminal device does not need to access the second cell.
  • the terminal device can quickly transmit information to the second cell, so that the terminal device can quickly obtain the access information of the first cell. This is beneficial for the terminal device to quickly select a candidate access cell and access the candidate access cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the terminal device sends the first request to the second access network device, including:
  • the terminal device When the terminal device detects that the received power in the reference signal of the first cell is greater than or equal to the threshold value, the terminal device sends the first request to the second access network device.
  • the terminal device when the terminal device detects that the received power of the reference signal is greater than a threshold value, the terminal device requests the second access network device for access information of the first cell. This can prevent the terminal device from frequently requesting the access information of the first cell from the second access network device, thereby saving energy consumption of the second access network device.
  • the received power of the reference signal is greater than the threshold value, it indicates that the terminal device receives a relatively high signal strength of the cell corresponding to the reference signal. In this way, if the terminal device subsequently accesses the cell, the cell can provide better communication quality for the terminal device. Thereby improving communication performance.
  • the first cell is a DCC cell
  • the second cell is a BCC cell
  • the first cell is all DCC cells associated with the second cell
  • the first cell is part of the BCC cells associated with the second cell .
  • the first cell may be part or all of the DCC cells associated with the second cell.
  • the second cell may broadcast access information of all cells associated with the second cell by default. This makes it convenient for the terminal device to select and access candidate access cells from the first cell according to the access information.
  • the second cell may broadcast the access information of a cell with a higher priority among the cells associated with the second cell. That is, the first cell includes some cells associated with the second cell. Therefore, the broadcast volume of the second cell is reduced, and the broadcast energy consumption of the second cell is saved.
  • the method also includes:
  • the terminal device receives indication information from the second access network device, where the indication information is used to indicate that the second cell is a BCC cell.
  • the second access network device may indicate that the second cell is a BCC cell through indication information.
  • the terminal device can request the access information of the first cell from the second access network device. In order to facilitate the terminal equipment to quickly access the candidate access cell.
  • the method also includes:
  • the terminal device initiates random access to the candidate access cell through the random access resource of the candidate access cell.
  • the terminal device when the terminal device has data to be sent, the terminal device can quickly access the candidate access cell. In this way, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the access information includes the SI of the first cell.
  • the access information may be the SI of the first cell.
  • the terminal device can determine the SI of the candidate access cell and quickly access the candidate access cell. Thereby improving communication performance.
  • the tenth aspect of the embodiment of the present application provides a communication method, including:
  • the second access network device sends access information to the terminal device, where the access information includes access information of a first cell, where the first cell is a cell of the first access network device, and the first cell is a cell associated with the second cell, The second cell is a cell of the second access network device, and the time domain resources occupied by the reference signal of the first cell are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the second access network device sends the access information of the first cell to the terminal device.
  • the terminal device can select a candidate access cell from the first cell according to the access information, and access the candidate access cell.
  • the terminal device quickly accesses the candidate access cell. The time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the first cell is located on a first carrier
  • the second cell is located on a second carrier
  • the first carrier is different from the second carrier
  • the above implementation manners provide applicable scenarios of this application.
  • the first cell and the second cell may be cells on different carriers.
  • the terminal device can only access or camp on the second cell, and select a candidate access cell from the first cell by receiving the access information of the second cell.
  • the first cell does not need to broadcast the SSB and/or SI, thereby saving energy consumption of the first cell.
  • the access information includes the SI of the first cell.
  • the access information may be the SI of the first cell.
  • the terminal device can determine the SI of the candidate access cell and quickly access the candidate access cell. Thereby improving communication performance.
  • the access information includes at least one of the following:
  • the identity of the first cell, the index of the first cell, the channel number of the first cell, the priority of the first cell, the start time domain position of the reference signal and the start time domain position or end time domain of the SSB of the second cell The location offset, the identifier of the network supported by the first cell, the random access parameter of the first cell, the selection parameter of the first cell, or the reselection parameter of the first cell.
  • the terminal device can select and access candidate access cells according to the access information. Then the first cell does not need to broadcast the SSB and/or SI, thereby reducing the energy consumption of the first cell. Moreover, the terminal device can quickly access the candidate access cell according to the access information, thereby reducing the time delay for the terminal device to access the cell and improving communication performance.
  • the method also includes:
  • the second access network device receives the first request from the terminal device, where the first request is used to request the second access network device to send access information.
  • the terminal device may request the access information of the first cell from the second access network device.
  • the second access network device can prevent the second access network device from broadcasting the access information of the first cell all the time, and reduce the broadcast amount of the second access network device. Therefore, the energy consumption of the second access network device is further saved, and the energy saving effect is improved.
  • receiving the first request from the terminal device by the second access network device includes:
  • the second access network device receives a preamble from the terminal device, where the preamble includes the first request; or;
  • the second access network device receives the RRC system message from the terminal device, where the RRC system message includes the first request.
  • two bearers for the terminal device to send the first request are provided, which provides a basis for implementation of the solution.
  • the terminal device sends the first request to the second access network device by using the preamble, and the terminal device does not need to access the second cell.
  • the terminal device can quickly transmit information to the second cell, so that the terminal device can quickly obtain the access information of the first cell. This is beneficial for the terminal device to quickly select a candidate access cell and access the candidate access cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the first cell is a DCC cell
  • the second cell is a BCC cell
  • the first cell is all DCC cells associated with the second cell
  • the first cell is a part associated with the second cell BCC community.
  • the first cell may be part or all of the DCC cells associated with the second cell.
  • the second cell may broadcast access information of all cells associated with the second cell by default. This makes it convenient for the terminal device to select and access candidate access cells from the first cell according to the access information.
  • the second cell may broadcast the access information of a cell with a higher priority among the cells associated with the second cell. That is, the first cell includes some cells associated with the second cell. Therefore, the broadcast volume of the second cell is reduced, and the broadcast energy consumption of the second cell is saved.
  • the method also includes:
  • the second access network device sends indication information to the terminal device, where the indication information is used to indicate that the second cell is a BCC cell.
  • the second access network device may indicate that the second cell is a BCC cell through indication information.
  • the terminal device can request the access information of the first cell from the second access network device. In order to facilitate the terminal equipment to quickly access the candidate access cell.
  • the eleventh aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • a receiving unit configured to receive a reference signal from the first cell; the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell;
  • a sending unit configured to send a wake-up signal to the first cell, where the wake-up signal is used to wake up the first cell to send SSB and/or SI.
  • the communication device further includes a processing unit
  • a processing unit configured to determine the first cell according to the reference signal.
  • the reference signal includes at least one of the following information:
  • the identity of the first cell, the system frame number where the reference signal is located, the half-frame indication, the index of the reference signal, the beam index of the reference signal, the time-frequency resource for sending the wake-up signal, the characteristic parameters of the pseudo-random sequence used for the wake-up signal, or communication The conditions under which the device sends a wakeup signal.
  • the sending unit is specifically used for:
  • the first condition includes at least one of the following: the communication device determines to camp on or access the first cell; the received power of the reference signal is greater than a threshold value; or, the reference signal is a reference signal corresponding to one or more cells respectively received by the communication device The reference signal with the highest received power.
  • the reference signal includes a time-frequency resource for sending the wake-up signal and characteristic parameters of a pseudo-random sequence used for the wake-up signal; the processing unit is further configured to:
  • the sending unit is used specifically for:
  • the wake-up signal includes a preamble for waking up the first cell to send the SSB and/or SI.
  • the sending unit is also used for:
  • the processing unit is also used for:
  • Synchronization is performed in the first cell according to the SSB and/or said SI.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell, including:
  • the number of time-domain symbols occupied by the reference signal is less than the sum of the number of time-domain symbols occupied by the SSB of the first cell and the SI of the first cell.
  • the twelfth aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • a receiving unit configured to receive a reference signal from an access network device, where the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell;
  • the sending unit is configured to send a wake-up signal to the access network device, where the wake-up signal is used to wake up the access network device to send SSB and/or SI in the first cell.
  • the communication device further includes a processing unit
  • a processing unit configured to determine the first cell according to the reference signal.
  • the reference signal includes at least one of the following information:
  • the identity of the first cell, the system frame number where the reference signal is located, the half-frame indication, the index of the reference signal, the beam index of the reference signal, the time-frequency resource for sending the wake-up signal, the characteristic parameters of the pseudo-random sequence used for the wake-up signal, or communication The conditions under which the device sends a wakeup signal.
  • the sending unit is specifically used for:
  • the first condition includes at least one of the following: the communication device determines to camp on or access the first cell; the received power of the reference signal is greater than a preset threshold value; or, the reference signal is received by the communication device corresponding to one or more cells The reference signal with the highest received power among the reference signals.
  • the reference signal includes a time-frequency resource for sending the wake-up signal and characteristic parameters of a pseudo-random sequence used for the wake-up signal; the processing unit is further configured to:
  • the sending unit is also used for:
  • a wake-up signal is sent to the access network device on the sending time-frequency resource.
  • the wake-up signal includes a preamble for waking up the first cell to send the SSB and/or SI.
  • the receiving unit is also used for:
  • the processing unit is also used for:
  • Synchronization is performed in the first cell according to SSB and/or SI.
  • the thirteenth aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • the sending unit is configured to send a reference signal to the terminal device;
  • the communication device is an access network device to which the first cell belongs;
  • the time domain resources occupied by the reference signal are less than the time domain resources occupied by the SSB of the first cell and the SI of the first cell sum;
  • the receiving unit is configured to receive a wake-up signal from the terminal equipment, and the wake-up signal is used to wake up the communication device to send SSB and/or SI in the first cell.
  • the reference signal includes at least one of the following information: the identity of the first cell, the system frame number where the reference signal is located, the half-frame indication, the index of the reference signal, the beam index of the reference signal, and the sending of the wake-up signal Time-frequency resources, characteristic parameters of the pseudo-random sequence used for the wake-up signal, or conditions for the terminal device to send the wake-up signal.
  • the sending unit is also used for:
  • the communication device further includes a processing unit
  • a processing unit configured to judge whether to start broadcasting SSB and/or SI in the first cell according to the first information
  • the first information includes at least one of the following: load of the first cell, load of a neighbor cell of the first cell, or received power of a reference signal.
  • the reference signal includes the time-frequency resource for sending the wake-up signal and the characteristic parameters of the pseudo-random sequence used for the wake-up signal; the sending unit is also used for:
  • the processing unit is also used for:
  • the wake-up signal is determined according to the characteristic parameters of the pseudo-random sequence used for the wake-up signal.
  • the wake-up signal includes a preamble for waking up the first cell to send the SSB and/or SI.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell, including:
  • the number of time-domain symbols occupied by the reference signal is less than the sum of the number of time-domain symbols occupied by the SSB of the first cell and the SI of the first cell.
  • the fourteenth aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • a receiving unit configured to receive a reference signal from the first cell, where the time domain resource occupied by the reference signal is less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell;
  • the sending unit is configured to send a measurement result to the second cell, where the measurement result is a measurement result obtained by the communication device by measuring the reference signal.
  • the receiving unit is also used for:
  • configuration information is configuration information of a reference signal
  • the sending unit is also used for:
  • the configuration information includes at least one of the following:
  • the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result is the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result.
  • the reference signal includes at least one of the following information:
  • An identifier of the first cell a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, or a beam index of the reference signal.
  • the sending unit is specifically used for:
  • the first condition includes at least one of the following: the received power of the reference signal in the measurement result is greater than the first threshold; or, any of the SSB of the second cell broadcast by the second cell, the channel state information reference signal, and the demodulation reference signal
  • the received power of a signal is less than a second threshold.
  • the measurement result includes at least one of the following: the identity of the first cell, or the received power of the reference signal.
  • the receiving unit is further configured to:
  • the processing unit is also used for:
  • Synchronization is performed in the first cell according to SSB and/or SI.
  • the fifteenth aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • the receiving unit is configured to receive a reference signal from a first access network device, where the first access network device is an access network device of the first cell, and the time domain resource occupied by the reference signal is less than that of the SSB and the first cell of the first cell.
  • the sending unit is configured to send a measurement result to the second access network device, where the measurement result is a measurement result obtained by the communication device by measuring the reference signal.
  • the receiving unit is also used for:
  • the sending unit is used specifically for:
  • the configuration information includes at least one of the following:
  • the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result is the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result.
  • the reference signal includes at least one of the following information:
  • An identifier of the first cell a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, or a beam index of the reference signal.
  • the sending unit is specifically used for:
  • the first condition includes at least one of the following: the received power of the reference signal in the measurement result is greater than the first threshold; or, the synchronization signal block SSB and channel corresponding to the second cell broadcast by the second access network device in the second cell
  • the received power of any one of the state information reference signal and the demodulation reference signal is less than the second threshold.
  • the measurement result includes at least one of the following: the identity of the first cell, or the received power of the reference signal.
  • the receiving unit is further configured to:
  • the processing unit is also used for:
  • Synchronization is performed in the first cell according to SSB and SI.
  • the sixteenth aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • the sending unit is configured to send a reference signal to the terminal device, the communication device is an access network device to which the first cell belongs, and the time domain symbols occupied by the reference signal are less than the time domain resources occupied by the SSB of the first cell and the SI of the first cell sum;
  • a receiving unit configured to receive indication information from the second access network device, where the indication information is used to instruct the communication device to start broadcasting SSB and/or SI in the first cell;
  • the processing unit is configured to broadcast the SSB and/or SI in the first cell according to the indication information.
  • the reference signal includes at least one of the following information:
  • An identifier of the first cell a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, or a beam index of the reference signal.
  • the seventeenth aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • the receiving unit is configured to receive the measurement result from the terminal device;
  • the measurement result is the measurement result obtained by the terminal device measuring the reference signal of the first cell, and the time domain symbols occupied by the reference signal are less than the SSB of the first cell and the SI of the first cell The sum of time domain resources occupied;
  • a sending unit configured to send instruction information to a first access network device, where the first access network device is an access network device to which the first cell belongs, and the instruction information is used to instruct the first access network device to start broadcasting in the first cell SSB and/or SI.
  • the sending unit is also used for:
  • the configuration information includes at least one of the following:
  • the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result is the measurement period of the reference signal, the channel number of the reference signal, the reporting receiving power threshold value of the reference signal, or the PRACH time-frequency resource and preamble used for reporting the measurement result.
  • the measurement result includes at least one of the following: the identity of the first cell, or the received power of the reference signal.
  • the reference signal includes at least one of the following information:
  • An identifier of the first cell a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, or a beam index of the reference signal.
  • processing unit is also used for:
  • the eighteenth aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • the receiving unit is configured to receive a reference signal from the first cell; the first cell is a cell associated with the second cell, and the time domain resources occupied by the reference signal are less than the time domain resources occupied by the SSB of the first cell and the SI of the first cell The sum of; receiving access information from the second cell, where the access information includes access information of the first cell;
  • the processing unit is configured to determine a candidate access cell, where the candidate access cell is selected from the first cell according to the access information and the reference signal.
  • the first cell is located on a first carrier
  • the second cell is located on a second carrier, so the first carrier is different from the second carrier.
  • the access information includes at least one of the following:
  • the identity of the first cell, the index of the first cell, the channel number of the first cell, the priority of the first cell, the start time domain position of the reference signal relative to the start time domain position or end time of the SSB of the second cell The offset of the domain position, the identifier of the network supported by the first cell, the random access parameter of the first cell, the selection parameter of the first cell, or the reselection parameter of the first cell.
  • the communication device further includes a sending unit
  • a sending unit configured to send a first request to the second cell, where the first request is used to request the second cell to send access information.
  • the sending unit is specifically used for:
  • the first request is sent to the second cell through a preamble or an RRC system request message.
  • the sending unit is specifically used for:
  • the communication device When the communication device detects that there is a reference signal with a received power greater than or equal to a threshold value among the reference signals of the first cell, the first request is sent to the second cell.
  • the first cell is a DCC cell
  • the second cell is a BCC cell
  • the first cell is all DCC cells associated with the second cell
  • the first cell is part of the DCC cells associated with the second cell .
  • the receiving unit is also used for:
  • processing unit is also used for:
  • the access information includes the SI corresponding to the first cell.
  • the nineteenth aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • the receiving unit is configured to receive a reference signal from a first access network device;
  • the first access network device is an access network device to which the first cell belongs, and the time domain resource occupied by the reference signal is less than that of the SSB and the second cell of the first cell
  • the sum of the time domain resources occupied by the SI of a cell receiving the access information from the second access network device, the access information includes the access information of the first cell, and the second access network device is the access network to which the second cell belongs Network access equipment, the first cell is a cell associated with the second cell;
  • the processing unit is configured to determine a candidate access cell, where the candidate access cell is selected from the first cell according to the access information and the reference signal.
  • the first cell is located on a first carrier
  • the second cell is located on a second carrier
  • the first carrier is different from the second carrier
  • the access information includes at least one of the following:
  • the identity of the first cell, the index of the first cell, the channel number of the first cell, the priority of the first cell, the start time domain position of the reference signal relative to the start time domain position or end time of the SSB of the second cell The offset of the domain position, the identifier of the network supported by the first cell, the random access parameter of the first cell, the selection parameter of the first cell, or the reselection parameter of the first cell.
  • the communication device further includes a sending unit; the sending unit is further configured to:
  • the sending unit is specifically used for:
  • the sending unit is specifically used for:
  • the communication device When the communication device detects that the received power in the reference signal of the first cell is greater than or equal to the threshold value, the first request is sent to the second access network device.
  • the first cell is a DCC cell
  • the second cell is a BCC cell
  • the first cell is all DCC cells associated with the second cell
  • the first cell is part of the BCC cells associated with the second cell .
  • the receiving unit is also used for:
  • processing unit is also used for:
  • the access information includes the SI of the first cell.
  • the twentieth aspect of the embodiment of the present application provides a communication device, and the communication device includes:
  • a sending unit configured to send access information to the terminal device, where the access information includes access information of a first cell, where the first cell is a cell of the first access network device, the first cell is a cell associated with the second cell, and the first cell is a cell associated with the second cell.
  • the second cell is a cell of the communication device, and the time domain resource occupied by the reference signal of the first cell is less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the first cell is located on a first carrier
  • the second cell is located on a second carrier
  • the first carrier is different from the second carrier
  • the access information includes the SI of the first cell.
  • the access information includes at least one of the following:
  • the identity of the first cell, the index of the first cell, the channel number of the first cell, the priority of the first cell, the start time domain position of the reference signal and the start time domain position or end time domain of the SSB of the second cell The location offset, the identifier of the network supported by the first cell, the random access parameter of the first cell, the selection parameter of the first cell, or the reselection parameter of the first cell.
  • the communication device further includes a receiving unit
  • the receiving unit is configured to receive a first request from the terminal device, where the first request is used to request the communication device to send access information.
  • the receiving unit is specifically used for:
  • the terminal device receiving a preamble from the terminal device, the preamble including the first request; or;
  • the first cell is a DCC cell
  • the second cell is a BCC cell
  • the first cell is all DCC cells associated with the second cell
  • the first cell is a part associated with the second cell BCC community.
  • the sending unit is also used for:
  • the indication information is used to indicate that the second cell is a BCC cell.
  • a twenty-first aspect of the embodiments of the present application provides a communication device, and the communication device includes: a processor and a memory. Computer programs or computer instructions are stored in the memory, and the processor is also used to call and run the computer programs or computer instructions stored in the memory, so that the processor implements any one of the first to tenth aspects Method to realize.
  • the communication device includes a transceiver; and the processor is configured to control the transceiver to execute any implementation manner in any aspect of the first aspect to the tenth aspect.
  • the twenty-second aspect of the embodiment of the present application provides a computer program product including computer instructions, which is characterized in that, when it is run on a computer, it causes the computer to execute any one of the implementation methods of the first aspect to the tenth aspect .
  • the twenty-third aspect of the embodiment of the present application provides a computer-readable storage medium, including computer instructions.
  • the computer instructions When the computer instructions are run on the computer, the computer executes any one of the aspects from the first aspect to the tenth aspect. Method to realize.
  • the twenty-fourth aspect of the embodiment of the present application provides a communication device.
  • the communication device includes entities such as network equipment, terminal equipment, or chips. Execute any implementation manner in any one of the above first aspect to the tenth aspect.
  • the processor is coupled to the memory through an interface.
  • a twenty-fifth aspect of the embodiments of the present application provides a communication system, and the communication system includes the communication device of the sixteenth aspect and the communication device of the seventeenth aspect.
  • the twenty-sixth aspect of the embodiment of the present application provides a chip, including a processor, configured to be connected to a memory, and call a program stored in the memory, so that the processor executes any one of the above-mentioned first to tenth aspects way of realization.
  • the terminal device receives the reference signal from the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the terminal device sends a wake-up signal to the first cell, where the wake-up signal is used to wake up the first cell to send the SSB and/or SI.
  • the terminal device can sense the first cell, synchronize with the first cell, and perform radio resource management measurement through the reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first cell is saved.
  • the terminal device perceives the first cell through the reference signal, the terminal device sends a wake-up signal to the first cell, where the wake-up signal is used to wake up the first cell to send the SSB and/or SI.
  • the first cell can start broadcasting the SSB and SI in time, so that the terminal device can quickly access the cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • FIG. 1A is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 1B is another schematic diagram of the communication system of the embodiment of the present application.
  • FIG. 1C is another schematic diagram of the communication system of the embodiment of the present application.
  • FIG. 2A is a schematic diagram of an embodiment of a communication method in an embodiment of the present application.
  • FIG. 2B is a schematic diagram of broadcasting a reference signal according to an embodiment of the present application.
  • FIG. 2C is a schematic diagram of a generation process of a pseudo-random sequence used to generate a reference signal in an embodiment of the present application
  • FIG. 2D is a schematic diagram of time-frequency resources occupied by reference signals according to an embodiment of the present application.
  • FIG. 2E is another schematic diagram of the time-frequency resources occupied by the reference signal in the embodiment of the present application.
  • FIG. 3 is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • FIG. 4A is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • FIG. 4B is another schematic diagram of broadcasting a reference signal according to an embodiment of the present application.
  • FIG. 4C is a schematic diagram of a scenario of a communication method in an embodiment of the present application.
  • FIG. 5A is a schematic diagram of another scene of a communication method according to an embodiment of the present application.
  • FIG. 5B is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • FIG. 6 is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • FIG. 7A is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • FIG. 7B is a schematic diagram of another scene of the communication method in the embodiment of the present application.
  • FIG. 7C is another schematic diagram of broadcasting a reference signal according to an embodiment of the present application.
  • FIG. 7D is a schematic diagram of another scene of the communication method in the embodiment of the present application.
  • FIG. 7E is a schematic diagram of another generation process for generating a pseudo-random sequence of a reference signal according to an embodiment of the present application.
  • FIG. 7F is another schematic diagram of broadcasting a reference signal according to an embodiment of the present application.
  • FIG. 7G is another schematic diagram of broadcasting a reference signal according to an embodiment of the present application.
  • FIG. 7H is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • FIG. 8 is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • FIG. 9 is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • FIG. 10 is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 12 is another schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 13 is another schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 14 is another schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a communication system according to an embodiment of the present application.
  • Embodiments of the present application provide a communication method and a communication device, which are used to reduce the time delay for a terminal device to access a cell and improve communication performance.
  • references to "one embodiment” or “some embodiments” or the like in this specification means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application.
  • appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in other embodiments,” etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless specifically stated otherwise.
  • the terms “including”, “comprising”, “having” and variations thereof mean “including but not limited to”, unless specifically stated otherwise.
  • At least one means one or more, and “multiple” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • “At least one of the following” or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • at least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .
  • Neighboring cells when there are no other cells between two cells, these two cells are adjacent cells. One of the cells may be referred to as a neighbor cell of the other cell. Neighboring cells may be referred to as neighboring cells for short.
  • Orthogonal frequency division multiplexing OFDM
  • SC-FDMA single-carrier frequency-division multiple access
  • terminal equipment may also be referred to as user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal), client (station, STA) etc.
  • user equipment user equipment
  • MS mobile station
  • MS mobile terminal
  • client station
  • STA station
  • the terminal device may include a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
  • Terminal equipment can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • terminal equipment can be mobile phones (or "cellular" phones), computers with mobile terminals, mobile phones, etc. (mobile phone), tablet computer, notebook computer, handheld computer, mobile Internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) device, industrial Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation security safety), wireless terminals in a smart city, or wireless terminals in a smart home, etc.
  • the terminal device can also be a portable, pocket, handheld, computer-built-in or vehicle-mounted mobile device, as well as a terminal device in a 5G communication network or a terminal device in a future evolution network.
  • the access network device is a device that provides a wireless communication function for the terminal device, and may also be called an access device, (R)AN device, or network device.
  • Access network equipment includes but not limited to: next generation node base station (gNB) in 5G communication system, evolved node B (eNB) in LTE system, radio network controller (radio network controller) , RNC), node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (home evolved nodeB, or home node B, HNB), Baseband unit (base band unit, BBU), transmission and receiving point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), small base station equipment (pico), mobile switching center, or network equipment in future networks, etc. .
  • This application does not limit the specific type of radio access network equipment. In systems using different radio access technologies, the names of devices that function as radio access network devices may be different
  • FIG. 1A is a schematic diagram of a communication system according to an embodiment of the present application.
  • the communication system includes access network equipment and terminal equipment.
  • Terminal 1 and terminal 2 are located in cell 1 of the access network system.
  • the access network device may broadcast the reference signal of cell 1 in cell 1.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB corresponding to the cell 1 and the SI corresponding to the cell 1 .
  • the access network equipment is in a minimalist broadcast module with low power consumption, thereby saving the energy consumption of the access network equipment.
  • the terminal device 1 and the terminal device 2 can perceive the cell 1 through the reference signal of the cell 1 . Specifically, it will be introduced in detail through the embodiments shown in FIG. 2A and FIG. 4A later.
  • the communication system includes at least one access network device and at least one terminal device.
  • the cell of the access network device includes at least one cell.
  • FIG. 1B is another schematic diagram of a communication system according to an embodiment of the present application.
  • the communication system includes access network equipment and terminal equipment.
  • Cell 1 and cell 2 are two cells of the access network equipment.
  • Cell 2 is a cell associated with Cell 1. Specifically, cell 1 is located on carrier 1, cell 2 is located on carrier 2, and carrier 1 and carrier 2 are different.
  • cell 1 may be located on a low frequency carrier, and cell 2 may be located on a high frequency carrier. From the perspective of signal coverage, the signal coverage of cell 1 overlaps with the signal coverage of cell 2 . It can be seen from FIG. 1B above that cell 1 and cell 2 are two cells of the same access network device, which can generally be referred to as co-site deployment cells.
  • the access network device may broadcast the SSB of the cell 1 and the SI of the cell 1 in the cell 1.
  • cell 1 is said to be in normal broadcast mode.
  • the access network equipment broadcasts the reference signal of the cell 2 in the cell 2.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the cell 2 and the SI of the cell 2 . That is, cell 2 is in a minimalist broadcast module with low power consumption, thereby saving energy consumption of access network equipment.
  • the terminal device 1 and the terminal device 2 can perceive the cell 2 through the reference signal of the cell 2 . Specifically, it will be introduced in detail through the embodiments shown in FIG. 7A , FIG. 8 and FIG. 10 hereinafter.
  • the communication system includes at least one access network device and at least one terminal device.
  • the cells of the access network device include at least one cell 1 and at least one cell 2 .
  • FIG. 1C is another schematic diagram of a communication system according to an embodiment of the present application.
  • the communication system includes access network equipment and terminal equipment.
  • Cell 1 is a cell of access network device 1
  • cell 2 is a cell of access network device 2 .
  • Cell 2 is a cell associated with Cell 1. Specifically, cell 1 is located on carrier 1, cell 2 is located on carrier 2, and carrier 1 and carrier 2 are different.
  • cell 1 may be located on a low frequency carrier, and cell 2 may be located on a high frequency carrier. From the perspective of signal coverage, the signal coverage of cell 1 overlaps with the signal coverage of cell 2 . It can be seen from FIG. 1B above that cell 1 and cell 2 are cells of two different access network devices, which may be generally referred to as non-co-site deployment cells.
  • the access network device 1 may broadcast the SSB of the cell 1 and the SI of the cell 1 in the cell 1. That is, cell 1 is in the normal broadcast mode. And the access network device 2 may broadcast the reference signal of the cell 2 in the cell 2 .
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the cell 2 and the SI of the cell 2 . That is, the cell 2 is in a simplified broadcast mode with low power consumption, thereby saving energy consumption of the access network device 2 .
  • the terminal device 1 and the terminal device 2 can perceive the cell 2 through the reference signal of the cell 2 . Specifically, it will be introduced in detail through the embodiments shown in FIG. 7A , FIG. 8 and FIG. 10 hereinafter.
  • the communication system includes at least one or two access network devices and at least one terminal device.
  • Each cell of the access network device includes at least one cell.
  • FIG. 1A to Fig. 1C show several possible scenarios where this application is applicable. This application is still applicable to other scenarios, and the scenarios shown below do not limit this application.
  • FIG. 2A is a schematic diagram of an embodiment of a communication method according to an embodiment of the present application.
  • communication methods include:
  • the access network device sends a reference signal of the first cell to the terminal device.
  • the terminal device receives the reference signal from the first cell of the access network device.
  • the first cell is a cell of the access network device.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the reference signal is used for the terminal device to sense the first cell.
  • the number of time-domain symbols occupied by the reference signal is less than the sum of the number of time-domain symbols occupied by the SSB of the first cell and the SI of the first cell.
  • the access network device does not broadcast the SSB and/or SI in the first cell, but broadcasts the reference signal of the first cell.
  • the first cell is in a minimalist broadcast mode with low power consumption.
  • the mode in which the access network device broadcasts the SSB and/or SI in the first cell is called a normal broadcast mode.
  • the mode in which the access network device broadcasts the reference signal of the first cell in the first cell is called a simplified broadcast mode. It can be seen from FIG. 2B that the SSB of the first cell and the SI of the first cell occupy 4 time-domain symbols, and the reference signal occupies 1 time-domain symbol. It can be seen from this that the access network device saves energy consumption of the access network device by turning off symbols. Compared with the normal broadcast mode, the simplified broadcast mode can save energy consumption of access network devices.
  • the terminal device can perceive the first cell through the reference signal of the first cell, which is beneficial for the terminal device to quickly access the first cell.
  • the reference signal may be called a discovery reference signal (discovery reference signal, DRS).
  • DRS discovery reference signal
  • the DRS is just an example, and the present application does not limit the name of the reference signal.
  • the reference signal may be any of the following signals: the primary synchronization signal (primary synchronization signal, PSS) of the first cell, the secondary synchronization signal (secondary synchronization signal, SSS) of the first cell, the Synchronization signal block (SSB), or a newly designed signal.
  • the reference signal is an implementation manner of a newly designed signal.
  • the reference signal includes at least one of the following information:
  • the identity of the first cell, the system frame number where the reference signal is located, the half-frame indication, the index of the reference signal, the beam index of the reference signal, the time-frequency resource for sending the wake-up signal, the characteristic parameters of the pseudo-random sequence used for the wake-up signal, or the terminal The condition under which the device sends a wake signal.
  • At least one item of information included in the reference signal is introduced below.
  • the identifier of the first cell may be a physical cell identifier (physical cell identifier, PCI) of the first cell, or a cell identity (cell identity) of the first cell.
  • PCI physical cell identifier
  • cell identity cell identity
  • the terminal device may determine the cell corresponding to the reference signal received by the terminal device through the identifier of the first cell.
  • the system frame number where the reference signal is located is the frame number of the system frame used by the access network device to send the reference signal, that is, the frame number of the system frame carrying the reference signal.
  • the field indication is used to indicate whether the reference signal is located in the first half frame or the second half frame of the system frame.
  • the field indication is used to indicate whether the reference signal is carried in the first half of the system frame or the second half of the frame, so as to facilitate the terminal device to parse the reference signal from the system frame.
  • the index of the reference signal is used to indicate the number of the reference signal sent by the access network device.
  • the access network device may send reference signals on different beams.
  • the access network device sends a reference signal numbered 1 on beam A, and sends a reference signal numbered 2 on beam B.
  • the terminal device measures the power of the reference signal and reports the received power of the reference signal to the access network device.
  • the terminal device reports the received power of the reference signal, it may indicate the serial number of the measured reference signal to the access network device. In this way, the access network device can determine on which beam the terminal device measures the reference signal.
  • the beam index of the reference signal is used to indicate the number of the beam used by the access network device to send the reference signal.
  • the terminal device measures and reports the power of the reference signal to the access network device, and when reporting the power of the reference signal, the terminal device may indicate to the access network device on which beam the measured reference signal is measured. In this way, the access network device can determine on which beam the terminal device measures the reference signal.
  • the time-frequency resources for sending the wake-up signal can be indicated in various ways, and several possible implementation ways are shown below.
  • the time-frequency resource for sending the wake-up signal includes the time-frequency location for sending the wake-up signal.
  • the terminal device may determine the time-frequency position for sending the wake-up signal.
  • the time-frequency resource for sending the wake-up signal is indicated by an index value.
  • the time-frequency resource for sending the wake-up signal is the time-frequency resource corresponding to the first index value.
  • the value range of the first index value is 1-64.
  • the corresponding time-frequency resource is: the second to the fourth time-domain symbol after the time-domain symbol occupied by the reference signal in the time domain, and the reference signal in the frequency domain
  • the occupied resource blocks are the same; when the first index value is 2, the corresponding time-frequency resource is: the third time-domain symbol to the fifth time-domain symbol after the time-domain symbol occupied by the reference signal in the time domain.
  • the time-domain resources corresponding to other values of the first index value are similar, and are not illustrated here one by one.
  • time-frequency resource corresponding to the first index value may be stipulated by a communication standard protocol, or be predefined, or configured, which is not specifically limited in this application.
  • the characteristic parameters of the pseudo-random sequence used by the wake-up signal may be indicated in various ways. Several possible implementations are shown below.
  • the characteristic parameters of the pseudo-random sequence used by the wake-up signal include characteristic parameters of the pseudo-random sequence.
  • the feature parameters include the root sequence index of the pseudorandom sequence.
  • the root sequence index is used by end devices to generate wake-up signals.
  • the characteristic parameter of the pseudo-random sequence used by the wake-up signal is indicated by the second index value.
  • Each second index value has a corresponding feature parameter.
  • characteristic parameter corresponding to the second index value may be stipulated by a communication standard protocol, or be predefined, or configured, and the details are not limited in this application.
  • the condition for the terminal device to send the wake-up signal includes: the terminal device detects that the received power of the reference signal is greater than a first threshold.
  • the first threshold may be configured by the access network device for the terminal device, or may be preset, which is not specifically limited in this application.
  • the terminal device When the terminal device detects that the received power of the reference signal is greater than the first threshold, the terminal device sends a wake-up signal to the access network device. Since the signal strength of the first cell that the terminal device can receive is relatively high, if the terminal device subsequently accesses the first cell, the first cell can provide the terminal device with better communication quality. Therefore, in the above situation, the technical solution that the terminal device wakes up the access network device to broadcast the SSB/or SI in the first cell is more practical.
  • the time-frequency resource for sending the wake-up signal and the characteristic parameters of the pseudo-random sequence used for the wake-up signal may also be specified in a communication standard protocol, or be predefined. That is, the access network device may not broadcast the time-frequency resources for sending the wake-up signal and the characteristic parameters of the pseudo-random sequence used for the wake-up signal.
  • the wake-up signal is a preamble.
  • Both the time-frequency resource for sending the preamble and the pseudo-random sequence used for the preamble are defined by the communication protocol, or are predefined.
  • the terminal device can wake up the access network device to broadcast the SSB and/or SI in the first cell through a specific preamble.
  • the reference signal may be generated according to a pseudo-random sequence.
  • the pseudo-random sequence may be an m-sequence, a Gold sequence, or a ZC sequence, etc., which are not limited in this application.
  • the access network device may use a pseudo-random sequence to represent the above information. For example, the access network device may configure an initial value or shift value for generating a pseudo-random sequence according to at least one item of information above, and then generate a corresponding pseudo-random sequence. Then, the access network device generates the reference signal according to the pseudo-random sequence.
  • a 127-bit Gold sequence is used as a pseudo-random sequence for generating a reference signal.
  • the Gold sequence is generated by adding two m-sequences modulo 2, and the specific generation process is shown in Figure 2C.
  • c(n) is a pseudo-random sequence for generating reference signals.
  • the initial value of the first m-sequence is 00000000000000000000001.
  • the 0th to 9th bits of the initial value of the second m sequence are used to indicate the identity of the first cell, the 11th to 15th bits are used to indicate the index of the reference signal, and the 19th to 28th bits are used to indicate System frame number, other bits are not limited.
  • the access network device obtains the pseudo-random sequence c(n) through the generation process shown in FIG. 2C .
  • the access network device performs Fourier transform processing or inverse Fourier transform processing on c(n), so as to generate the reference signal of the first cell.
  • the reference signal includes the identifier of the first cell, the index of the reference signal and the system frame number.
  • the terminal device After receiving the reference signal, the terminal device can derive the identity of the first cell, the index of the reference signal, and the system frame number.
  • the reference signal includes at least one sub-signal.
  • the sum of time domain resources occupied by at least one sub-signal is less than the sum of time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • Each sub-signal can be generated by a pseudo-random sequence. For the introduction of the pseudo-random sequence, please refer to the previous introduction.
  • the sum of the number of time-domain symbols occupied by at least one sub-signal is less than the sum of the number of time-domain symbols occupied by the SSB of the first cell and the SI of the first cell.
  • the number of time domain symbols occupied by at least one subchannel is 1 time domain symbol or 3 time domain symbols.
  • At least one sub-signal includes at least one item of information: the identity of the first cell, the system frame number where the reference signal is located, the half-frame indication, the index of the reference signal, the beam index of the reference signal, and the time-frequency resource for sending the wake-up signal , characteristic parameters of the pseudo-random sequence used for the wake-up signal, or conditions for the terminal device to send the wake-up signal.
  • Each sub-signal includes one or more pieces of information in the above information.
  • the reference signal includes three sub-signals, namely DRS-a, DRS-b and DRS-c.
  • DRS-a includes the identity of the first cell.
  • DRS-b includes the system frame number and half frame indication where the reference signal is located.
  • the DRS-c includes the time-frequency resource for sending the wake-up signal and the characteristic parameters of the pseudo-random sequence used for the wake-up signal.
  • frequency-domain resources occupied by different sub-signals on the same time-domain symbol satisfy a frequency division multiplexing relationship.
  • the reference signal includes three sub-signals, namely DRS-a, DRS-b and DRS-c.
  • DRS-a, DRS-b, and DRS-c all occupy the same time-domain symbol, namely, time-domain symbol 2.
  • the frequency domain resources occupied by DRS-a are resource block 10 to resource block 12 .
  • the frequency domain resources occupied by DRS-b are resource blocks 5 to 8.
  • the frequency domain resources occupied by DRS-c are resource block 1 to resource block 3 . It can be seen that, on the time domain symbol 2, the frequency domain resources occupied by DRS-a, DRS-b and DRS-c respectively satisfy the frequency division multiplexing relationship.
  • the time-domain resources occupied by different sub-signals at the same frequency domain position satisfy a time-division multiplexing relationship.
  • the reference signal includes three sub-signals, namely DRS-a, DRS-b and DRS-c.
  • DRS-a occupies resource block 1 to resource block 3 .
  • DRS-b occupies resource block 1 to resource block 4 .
  • DRS-c occupies resource block 1 to resource block 3 .
  • DRS-a, DRS-b, and DRS-c occupy time-domain symbol 1, time-domain symbol 2, and time-domain symbol 3, respectively. It can be seen that, on resource block 1, the time domain resources occupied by DRS-a, DRS-b and DRS-c respectively satisfy the time division multiplexing relationship.
  • DRS-a, DRS-b, and DRS-c occupy time-domain symbol 1, time-domain symbol 2, and time-domain symbol 3, respectively. It can be seen that, on the resource block 2, the time domain resources occupied by DRS-a, DRS-b and DRS-c respectively satisfy the time division multiplexing relationship.
  • DRS-a, DRS-b, and DRS-c occupy time-domain symbol 1, time-domain symbol 2, and time-domain symbol 3, respectively. It can be seen that, on the resource block 3, the time domain resources occupied by DRS-a, DRS-b and DRS-c respectively satisfy the time division multiplexing relationship.
  • the terminal device sends a wake-up signal to the access network device.
  • the access network device receives the wake-up signal from the terminal device.
  • the wake-up signal is used to wake up the access network device to send SSB and/or SI in the first cell.
  • the terminal device may receive a reference signal from the first cell of the access network device. Then, the terminal device sends a wake-up signal to the access network device.
  • the wake-up signal is used to wake up the access network device to broadcast SSB and/or SI in the first cell.
  • the terminal device may determine the first cell.
  • the above embodiment shown in FIG. 2A further includes step 202a. Step 202a may be performed before step 202 .
  • the terminal device determines the first cell according to the reference signal.
  • step 202a there are many ways for the terminal device to determine the first cell, and several possible implementation ways are shown below.
  • the present application is still applicable to other implementation manners, and the following examples are not intended to limit the present application.
  • the reference signal includes the identifier of the first cell.
  • the above step 202a specifically includes: the terminal device determines the first cell according to the identifier of the first cell.
  • Implementation mode 2 the above step 202a specifically includes: the terminal device determines the first cell according to the format of the reference signal.
  • the reference signal of each cell of the access network device has a corresponding format. Formats of reference signals of different cells are different.
  • the terminal equipment acquires the format of the reference signals of different cells.
  • the terminal device determines the first cell according to the format of the reference signal.
  • the format of the reference signal is a pseudo-random sequence used for the reference signal. Different pseudo-random sequences apply to reference signals of different cells.
  • the terminal device can obtain the format of the reference signal of each cell of the access network device from the access network device; or other devices pre-configure the format of the reference signal of each cell of the access network device on the terminal device Format.
  • the above step 201 specifically includes: when the first condition is satisfied, the terminal device sends a wake-up signal to the access network device.
  • the first condition includes at least one of the following:
  • the terminal device determines to camp on or access the first cell; the received power of the reference signal is greater than the second threshold; or, the reference signal is a reference signal with the highest received power among the reference signals received by the terminal device from one or more cells.
  • the second threshold may be configured by the access network device for the terminal device, or defined by a communication protocol, or preset, which is not limited in this application.
  • the terminal device when the first condition is satisfied, the terminal device sends a wake-up signal to the access network device.
  • This can prevent the access network equipment from frequently receiving wake-up signals from the terminal equipment, thereby improving the energy saving effect of the access network equipment.
  • the terminal device sends the reference signal to the access network The device sends a wakeup signal. It can be seen from this that the signal strength of the first cell that the terminal device can receive is relatively high. In this way, if the terminal device subsequently accesses the first cell, the access network device can provide better communication quality for the terminal device.
  • step 202b may be performed before step 202 .
  • the terminal device generates a wake-up signal according to the characteristic parameters of the pseudo-random sequence.
  • the wake-up signal adopts ZC sequence.
  • the characteristic parameters of the pseudo-random sequence include the root sequence index u.
  • the terminal device generates a ZC sequence according to the root sequence index u.
  • the terminal equipment sequentially places each bit in the ZC sequence on the corresponding subcarrier, and performs Fourier transform processing to obtain a wake-up signal.
  • the above step 202 specifically includes: the terminal device sends the wake-up signal to the access network device on the time-frequency resource for sending the wake-up signal.
  • the access network device receives the wake-up signal from the terminal device on the sending time-frequency resource.
  • the time-frequency resources for sending the wake-up signal and the characteristic parameters of the pseudo-random sequence used for the wake-up signal may be sent by the access network device to the terminal device through a reference signal, or may be specified in a communication standard protocol, which is not limited in this application .
  • the time-frequency resources for sending the wake-up signal and the characteristic parameters of the pseudo-random sequence used for the wake-up signal are specified in the communication standard protocol.
  • the wake-up signal includes a preamble for waking up the access network device to send SSB and/or SI in the first cell.
  • both the time-frequency resource for sending the preamble and the pseudo-random sequence used for the preamble are defined by the communication protocol, or are predefined.
  • the terminal device wakes up the access network device to broadcast the SSB and/or SI in the first cell through a specific preamble.
  • the access network device may determine that the preamble is used to wake up the access network device to broadcast the SSB and/or SI in the first cell.
  • the terminal device does not need to access the first cell, and the terminal device can quickly wake up the access network device to broadcast the SSB and/or SI in the first cell. That is, the terminal device can quickly transmit information to the access network device.
  • the access network device can broadcast the SSB and/or SI in the first cell in time, which is beneficial for the terminal device to quickly access the first cell and reduce the access delay.
  • step 203 and step 204 may be performed after step 202 .
  • the access network device sends the SSB of the first cell and/or the SI of the first cell to the terminal device.
  • the terminal device receives the SSB of the first cell and/or the SI of the first cell from the access network device.
  • the access network device After the access network device receives the wake-up signal, the access network device broadcasts the first cell SSB and/or the first cell SI in the first cell.
  • Step 203 a is executed after step 202 and before step 203 .
  • the access network device determines whether to broadcast the SSB of the first cell and/or the SI of the first cell in the first cell, and if yes, execute step 203; if not, the access network device performs other operations.
  • the access network device judges whether to broadcast the SSB of the first cell and/or the SI of the first cell in the first cell according to the first information. If yes, execute step 203; if not, the access network device performs other operations.
  • the first information includes at least one of the following items: load of the first cell, load of neighbor cells of the first cell, or received power of a wake-up signal received by the access network device.
  • the access network device may broadcast the SSB of the first cell and/or the SI of the first cell on the first cell.
  • the access network device may not start broadcasting the SSB of the first cell and/or the SI of the first cell on the first cell.
  • the other operations performed by the access network device include: the access network device maintains the original state, that is, the access network device does not broadcast the SSB of the first cell and/or the SSB of the first cell in the first cell. Si.
  • the terminal device camps in the first cell according to the SSB of the first cell and/or the SI of the first cell; or, the terminal device performs synchronization in the first cell according to the SSB of the first cell and/or the SI of the first cell; Or, the terminal device initiates random access to the first cell according to the SSB of the first cell and/or the SI of the first cell.
  • the SI of the first cell includes the network to which the first cell belongs.
  • the terminal device judges whether it can camp on the first cell according to the SI of the first cell. If the terminal device subscribes to the network to which the first cell belongs, the terminal device may camp on the first cell.
  • the terminal device if the terminal device has not subscribed to the network to which the first cell belongs, the terminal device cannot camp on the first cell.
  • the SI of the first cell includes random access time-frequency resources and a preamble.
  • the terminal device sends a preamble to the access network device on the random access time-frequency resource, so as to request access to the first cell.
  • the terminal device receives the reference signal from the first cell of the access network device.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the terminal device sends a wake-up signal to the access network device, where the wake-up signal is used to wake up the access network device to send the SSB of the first cell and/or the SI of the first cell in the first cell. It can be seen from this that the terminal device perceives the first cell through the reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the access network device for broadcasting the reference signal is relatively low, that is, the first cell is in a simplified broadcast mode with low power consumption.
  • the terminal device perceives the first cell through the reference signal, and the terminal device may send a wake-up signal to the access network device.
  • the access network device can timely start broadcasting the SSB of the first cell and the SI of the first cell in the first cell.
  • the terminal device can quickly access the first cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the access network device may be replaced by the first cell. That is to say, the technical solution of this application is introduced by the first cell as the executive body. Another way of describing the technical solution shown in FIG. 2A is introduced below through the embodiment shown in FIG. 3 .
  • FIG. 3 is a schematic diagram of another embodiment of a communication method according to an embodiment of the present application.
  • communication methods include:
  • a terminal device receives a reference signal from a first cell.
  • the terminal device sends a wake-up signal to the first cell.
  • the wake-up signal is used to wake up the first cell to send SSB and/or SI.
  • the wake-up signal please refer to the related introduction of step 202 in the embodiment shown in FIG. 2A , which will not be repeated here.
  • the wake-up signal includes a preamble for waking up the first cell to send SSB and/or SI.
  • the terminal device does not need to access the cell, and the terminal device can quickly wake up the first cell to broadcast the SSB and/or SI through a specific preamble.
  • the first cell may determine that the preamble is used to wake up the first cell to broadcast SSB and/or SI. Then the first cell can start broadcasting the SSB and/or SI in time, so that the terminal device can quickly access the first cell.
  • step 202 For relevant descriptions about the preamble, please refer to the relevant descriptions of step 202 in the embodiment shown in FIG. 2A , and details will not be repeated here.
  • step 302a may be performed before step 302.
  • the terminal device determines the first cell according to the reference signal.
  • Step 302a is similar to the aforementioned step 202a shown in FIG. 2A .
  • Step 302a please refer to the related introduction in the aforementioned embodiment shown in FIG. 2A , which will not be repeated here.
  • the above step 301 specifically includes: when the first condition is satisfied, the terminal device sends a wake-up signal to the first cell.
  • the terminal device sends a wake-up signal to the first cell.
  • step 302b may be performed before step 302 .
  • the terminal device generates a wake-up signal according to the characteristic parameters of the pseudo-random sequence.
  • Step 302b is similar to step 202b in the above-mentioned embodiment shown in FIG. 2A .
  • Step 302b is similar to step 202b in the above-mentioned embodiment shown in FIG. 2A .
  • step 302 specifically includes: the terminal device sends the wake-up signal to the first cell on the time-frequency resource for sending the wake-up signal.
  • the first cell receives the wake-up signal from the terminal device on the time-frequency resource for sending the wake-up signal.
  • step 303 and step 304 may be performed after step 302 .
  • the first cell sends the SSB and/or SI to the terminal device, and correspondingly, the terminal device receives the SSB and/or SI from the first cell.
  • step 303a which may be performed after step 302 and before step 303.
  • the first cell judges whether to broadcast the SSB and/or SI, and if yes, execute step 304; if not, the first cell executes other operations.
  • step 303a Relevant introductions about step 303a are similar to step 203a in the aforementioned embodiment shown in FIG. 2A , for details, please refer to the aforementioned related introductions, and details are not repeated here.
  • the terminal device camps in the first cell according to the SSB of the first cell and/or the SI of the first cell; or, the terminal device performs synchronization in the first cell according to the SSB of the first cell and/or the SI of the first cell; Or, the terminal device initiates random access to the first cell according to the SSB of the first cell and/or the SI of the first cell.
  • Step 304 is similar to step 204 in the above-mentioned embodiment shown in FIG. 2A .
  • Step 304 please refer to the related introduction of step 204 in the above-mentioned embodiment shown in FIG. 2A , which will not be repeated here.
  • the terminal device receives the reference signal from the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the terminal device sends a wake-up signal to the first cell, where the wake-up signal is used to wake up the first cell to send the SSB and/or SI. It can be seen from this that the terminal device perceives the first cell through the reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption.
  • the terminal device perceives the first cell through the reference signal, and the terminal device may send a wake-up signal to the first cell. Then the first cell can start broadcasting the SSB and SI in time, so that the terminal device can quickly access the cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • FIG. 4A is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • communication methods include:
  • the first access network device sends a reference signal of the first cell to a terminal device.
  • the terminal device receives the reference signal from the first cell of the first access network device.
  • the first cell is a cell of the first access network device.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the reference signal is used for the terminal device to perceive the first cell.
  • the first access network device does not broadcast the SSB and/or SI in the first cell, but broadcasts a reference signal of the first cell.
  • the mode in which the first access network device broadcasts the reference signal of the first cell in the first cell is called a simplified broadcast mode. It can be seen from FIG. 4B that the number of time-domain symbols occupied by the reference signal is 1, and the number of time-domain symbols occupied by the SSB1 of the first cell and the SI1 of the first cell is four. It can be seen that the first access network device saves energy consumption of the first access network device by turning off symbols.
  • the terminal device can perceive the first cell through the reference signal of the first cell. This is beneficial for the terminal device to quickly access the first cell.
  • the number of time-domain symbols occupied by the reference signal is less than the sum of the number of time-domain symbols occupied by the SSB of the first cell and the SI of the first cell.
  • the reference signal may be referred to as a DRS.
  • the DRS is just an example, and the present application does not limit the name of the reference signal.
  • the reference signal may be the PSS of the first cell, or the SSS of the first cell, or the SSB of the first cell, or a newly designed signal.
  • the reference signal is an implementation manner of a newly designed signal.
  • the reference signal includes at least one of the following information:
  • An identifier of the first cell a system frame number where the reference signal is located, a half-frame indication, an index of the reference signal, or a beam index of the reference signal.
  • the reference signal may be generated according to a pseudo-random sequence.
  • the pseudo-random sequence may be an m-sequence, a Gold sequence, or a ZC sequence, etc., which are not limited in this application.
  • the reference signal includes at least one piece of information shown above.
  • the first access network device may use a pseudo-random sequence to represent the foregoing information.
  • the first access network device may configure an initial value or shift value for generating a pseudo-random sequence according to the foregoing information, and then generate a corresponding pseudo-random sequence.
  • the generation process please refer to the relevant introduction of the aforementioned FIG. 2C , which will not be repeated here.
  • the reference signal of the first cell includes at least one sub-signal.
  • the at least one sub-signal reference may be made to the relevant introduction in the embodiment shown in FIG. 2A , which will not be repeated here.
  • the at least one sub-signal can be further understood in combination with the examples shown in FIG. 2D and FIG. 2E , and will not be repeated here.
  • the terminal device sends the measurement result to the second access network device.
  • the second access network device receives the measurement result from the terminal device.
  • the second access network device is an access network device to which the second cell belongs.
  • the measurement result is a measurement result obtained by the terminal device measuring the reference signal.
  • the terminal device camps on or accesses the second cell.
  • the second cell is a neighbor cell of the first cell.
  • the second access network device broadcasts the SSB2 of the second cell and/or the SI2 of the second cell in the second cell.
  • the mode in which the second access network device broadcasts SSB2 and/or SI2 in the second cell may be referred to as a normal broadcast mode.
  • the terminal device resides in the second cell, and the second cell may be a neighbor cell of the first cell.
  • the terminal device After the terminal device receives the reference signal of the first cell, the terminal device measures the reference signal to obtain a measurement result. Then, the terminal device sends the measurement result to the second access network device.
  • the above embodiment shown in FIG. 4A further includes step 402a. Step 402a may be performed before step 402 .
  • the terminal device measures the reference signal to obtain a measurement result.
  • the terminal device may determine the first cell according to the identifier of the first cell included in the reference signal.
  • the terminal device measures the received reference signal to obtain a measurement result.
  • the measurement result includes at least one of the following: the identity of the first cell, or the received power of the reference signal.
  • the above step 401 specifically includes: when the first condition is met, the terminal device sends the measurement result to the second access network device.
  • the first condition includes at least one of the following: the received power of the reference signal in the measurement result is greater than or equal to the first threshold; or, the received power or received quality of the first signal is less than or equal to the second threshold;
  • the first signal includes any of the following: the SSB of the second cell, the channel state information reference signal (channel state information reference signal, CSI-RS) of the second cell, or the demodulation reference signal (demodulation reference) of the second cell signal, DMRS).
  • the channel state information reference signal channel state information reference signal, CSI-RS
  • the demodulation reference signal demodulation reference
  • the first threshold and the second threshold may be preset, or stipulated by a communication protocol, or configured by an access network device for a terminal device, which are not specifically limited in this application.
  • the terminal device can send the measurement result to the second access network device.
  • the second access network device may refer to the measurement result and instruct the first access network device to start broadcasting the SSB and/or SI in the first cell. It is convenient for the terminal equipment to access the first cell.
  • the terminal device can reselect a cell to access.
  • the terminal device may measure the reference signal of the first cell, and send the measurement result to the second access network device.
  • the second access network device may refer to the measurement result and instruct the first access network device to start broadcasting the SSB and/or SI in the first cell. It is beneficial for the terminal equipment to quickly access the first cell.
  • step 402b further includes step 402b, and step 402b may be performed before step 402.
  • the second access network device sends configuration information to the terminal device.
  • the terminal device receives configuration information from the second access network device.
  • the configuration information is configuration information of the reference signal.
  • the configuration information includes at least one of the following: a measurement period of the reference signal, a channel number of the reference signal, a power threshold value of the reported receiving power of the reference signal, or a PRACH time-frequency resource and a preamble for reporting the measurement result.
  • the at least one piece of information included in the configuration information is introduced below.
  • the measurement period may refer to how often the terminal equipment performs reference signal measurement.
  • the measurement period is usually much longer than the transmission period of the reference signal.
  • the sending period of the reference signal may be 5ms, and the measurement period may be 100s.
  • the terminal device may determine channel 1 according to the channel number, and monitor the reference signal on channel 1.
  • Reporting the received power threshold value is used to instruct the terminal device to report the received power threshold value of the reference signal corresponding to the measurement result.
  • the reported received power threshold of the reference signal is A
  • the terminal device measures the reference signal to obtain the received power of the reference signal.
  • the received power of the reference signal is B. If B is smaller than A, then the terminal device does not report the measurement result. If B is greater than or equal to A, the terminal device may report the measurement result to the second access network device.
  • the terminal device may send a preamble to the second access network device on the PRACH time-frequency resource, where the preamble includes the measurement result.
  • the terminal device may use the pseudo-random sequence used to generate the preamble to characterize the measurement result, and then generate the preamble according to the pseudo-random sequence.
  • the terminal device may configure the measurement result as an initial value or shift value of a pseudo-random sequence to represent the measurement result, and then generate a corresponding pseudo-random sequence.
  • step 402 specifically includes: the terminal device sends the measurement result to the second access network device according to the configuration information.
  • the configuration information includes PRACH time-frequency resources and preambles for reporting measurement results.
  • the terminal device determines the PRACH time-frequency resource according to the configuration information.
  • the terminal device sends a preamble to the second access network device on the PRACH time-frequency resource, where the preamble includes the measurement result.
  • the preamble including the measurement result please refer to the foregoing related introduction.
  • the second access network device receives the measurement result from the terminal device on the PRACH time-frequency resource.
  • the configuration information includes reference signal measurement configuration information and reference signal reporting configuration system information.
  • the measurement configuration information includes at least one of the following: a measurement cycle of the reference signal, or a channel number of the reference signal.
  • the reporting configuration information includes at least one of the following items: a reference signal reporting receiving power threshold, or a PRACH time-frequency resource and a preamble for reporting measurement results.
  • the above step 402a specifically includes: the terminal device measures the reference signal according to the measurement configuration information, and obtains a measurement result.
  • the measurement configuration information includes the measurement period of the reference signal and the channel number of the reference signal.
  • the terminal device determines a channel according to the channel number, and monitors the reference signal of the first cell on the channel. Then, the terminal device measures the reference signal according to the measurement period to obtain the measurement result.
  • the second access network device provides the measurement period and the channel number to the terminal device. In this way, the terminal device can monitor the signal on the channel corresponding to the channel number. End devices do not need to listen for signals on all channels. Thereby saving the energy consumption of the terminal equipment.
  • the first access network device periodically sends the reference signal, and the terminal device measures the reference signal according to the measurement period. The terminal device only needs to receive the reference signal of the first cell at a corresponding time point according to the measurement period. There is no need to monitor the reference signal on the channel in real time, further saving the energy consumption of the terminal equipment.
  • the above step 402 specifically includes: the terminal device sends the measurement result to the second access network device according to the reported configuration information.
  • the terminal device sends the measurement result to the second access network device according to the reported configuration information.
  • the second access network device sends indication information to the first access network device.
  • the first access network device receives the indication information from the second access network device.
  • the instruction information is used to instruct the first access network device to start broadcasting the SSB and/or SI in the first cell.
  • the second access network device instructs the first access network device to start broadcasting the SSB and/or SI in the first cell.
  • Step 403a may be performed after step 402 and before step 403 .
  • the second access network device determines whether to instruct the first access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell in the first cell. If yes, perform step 404; if not, perform the second The access network device performs other operations.
  • the second access network device determines whether to instruct the first access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell according to the second information. If yes, perform step 404; if not, the second access network device performs other operations.
  • the second information includes at least one of the following: the load of the first cell, the load of the second cell, or the received power of the reference signal in the measurement result.
  • the load of the first cell may refer to the number of wake-up signals received by the first cell within a period of time.
  • the second access network device may instruct the first access network device to start broadcasting the SSB and SSB in the first cell. / or SI.
  • the second access network device may not instruct the first access network device to start broadcasting the SSB in the first cell and/or SI.
  • the other operations performed by the second access network device include: the second access network device does not instruct the first access network device to start broadcasting the SSB of the first cell and/or the first SI of the cell.
  • the above embodiment shown in FIG. 4A further includes step 404 to step 405 .
  • Step 404 to step 405 may be performed after step 403 .
  • the first access network device sends the SSB of the first cell and/or the SI of the first cell to the terminal device.
  • the first access network device broadcasts the SSB of the first cell and/or the SI of the first cell in the first cell.
  • the second access network device After the second access network device receives the indication information from the first access network device, the second access network device starts broadcasting the SSB and/or SI in the first cell. That is, the first cell switches from the simplified broadcast mode to the normal broadcast mode.
  • the terminal device camps on the first cell according to the SSB of the first cell and/or the SI of the first cell; or, the terminal device performs synchronization in the first cell according to the SSB of the first cell and/or the SI of the first cell ; Or, the terminal device initiates random access to the first cell according to the SSB of the first cell and/or the SI of the first cell.
  • Step 405 is similar to step 204 in the above-mentioned embodiment shown in FIG. 2A .
  • Step 405 please refer to the related introduction of step 204 in the above-mentioned embodiment shown in FIG. 2A , which will not be repeated here.
  • the terminal device receives the reference signal from the first cell of the first access network device.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the terminal device sends the measurement result to the second access network device.
  • the measurement result is a measurement result obtained by the terminal device measuring the reference signal. It can be seen from this that the terminal device perceives the first cell through the reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the access network equipment is saved.
  • the terminal device sends the measurement result obtained by the terminal device measuring the reference signal to the second access network device. After obtaining the measurement result, the second access network device may instruct the first access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell in the first cell in combination with the measurement result. That is, the above technical solution provides a means of triggering the second access network device to instruct the first access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell.
  • the above technical solution can enable the first access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell in a timely manner. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • FIG. 4A shows the realization that the first cell and the second cell belong to different access network devices, that is, the first access network device and the second access network device are two different access network devices. equipment.
  • the access network devices to which the first cell and the second cell belong may also be the same. That is, the first access device and the second access network device are the same access network device.
  • the first cell and the second cell are two cells of the access network device. The first cell is in a simplified broadcast mode, and the second cell is in a normal broadcast mode.
  • FIG. 5B is similar to the aforementioned embodiment shown in FIG. 4A , and for the differences, please refer to the related introduction of the embodiment shown in FIG. 5B later.
  • FIG. 5B is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • the communication methods include:
  • An access network device sends a reference signal of a first cell to a terminal device.
  • the terminal device receives the reference signal from the first cell of the access network device.
  • Step 501 is similar to step 401 in the above-mentioned embodiment shown in FIG. 4A .
  • Step 501 is similar to step 401 in the above-mentioned embodiment shown in FIG. 4A .
  • the terminal device sends the measurement result to the access network device.
  • the access network device receives the measurement result from the terminal device.
  • the first cell and the second cell are cells of the access network device.
  • Step 502 is similar to step 402 in the above-mentioned embodiment shown in FIG. 4A .
  • step 502a may be performed before step 502 .
  • the terminal device measures the reference signal to obtain a measurement result.
  • Step 502a is similar to step 402a in the above-mentioned embodiment shown in FIG. 4A .
  • Step 502a is similar to step 402a in the above-mentioned embodiment shown in FIG. 4A .
  • Step 502a is similar to step 402a in the above-mentioned embodiment shown in FIG. 4A .
  • the above embodiment shown in FIG. 5B further includes step 502b.
  • Step 502b may be performed before step 502 .
  • the access network device sends configuration information to the terminal device.
  • the terminal device receives configuration information from the terminal device.
  • Step 502b is similar to step 402b in the above-mentioned embodiment shown in FIG. 4A .
  • Step 502b is similar to step 402b in the above-mentioned embodiment shown in FIG. 4A .
  • the above step 502 specifically includes: the terminal device sends the measurement result to the access network device according to the configuration information.
  • the terminal device sends the measurement result to the access network device according to the configuration information.
  • the above embodiment shown in FIG. 5B further includes step 503 and step 504 .
  • the access network device sends the SSB of the first cell and/or the SI of the first cell to the terminal device.
  • the terminal device receives the SSB of the first cell and/or the SI of the first cell from the access network device.
  • the access network device may start broadcasting the SSB and/or SI in the first cell, or the access network device first determines whether to start broadcasting the SSB and/or SI in the first cell.
  • step 503a is executed before step 503 .
  • the access network device judges whether to enable the broadcast of the SSB of the first cell and/or the SI of the first cell in the first cell; if yes, perform step 503; if not, perform other operations by the access network device.
  • step 503a The judging process of step 503a is similar to step 403a in the above-mentioned embodiment shown in FIG. 4A .
  • step 403a please refer to the related introduction of step 403a in the above-mentioned embodiment shown in FIG. 4A , which will not be repeated here.
  • the terminal device camps on the first cell according to the SSB of the first cell and/or the SI of the first cell; or, the terminal device performs synchronization in the first cell according to the SSB of the first cell and/or the SI of the first cell ; Or, the terminal device initiates random access to the first cell according to the SSB of the first cell and/or the SI of the first cell.
  • Step 504 is similar to step 204 in the above-mentioned embodiment shown in FIG. 2A .
  • Step 504 please refer to the related introduction of step 204 in the above-mentioned embodiment shown in FIG. 2A , which will not be repeated here.
  • the terminal device receives the reference signal from the first cell of the access network device.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the terminal device sends the measurement result to the access network device.
  • the measurement result is a measurement result obtained by the terminal device measuring the reference signal. It can be seen from this that the terminal device perceives the first cell through the reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the access network equipment is saved.
  • the terminal device sends the measurement result to the access network device. After acquiring the measurement result, the access network device may determine whether to start broadcasting the SSB of the first cell and/or the SI of the first cell in the first cell based on the measurement result. That is, a means for triggering the second access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell is provided.
  • the above technical solution can enable the access network device to start broadcasting the SSB of the first cell and/or the SI of the first cell in a timely manner. It is beneficial for the terminal equipment to quickly access the first cell, reduce the time delay for the terminal equipment to access the cell, and improve communication performance.
  • the first access network device may be replaced by the first cell
  • the second access network device may be replaced by the second cell. That is to say, the technical solution of this application is introduced with the first cell and the second cell as the execution subjects. Another way of describing the technical solution shown in FIG. 4A is introduced below through the embodiment shown in FIG. 6 .
  • FIG. 6 is a schematic diagram of another embodiment of a communication method according to an embodiment of the present application.
  • communication methods include:
  • the first cell sends a reference signal to a terminal device.
  • the terminal device receives the reference signal from the first cell.
  • the terminal device sends the measurement result to the second cell.
  • the second cell receives the measurement result from the terminal device.
  • Step 601 and step 602 are similar to steps 401 to 402 in the above-mentioned embodiment shown in FIG. 4A , but the description is different. For details, please refer to the related introduction of step 401 to step 402 in the above-mentioned embodiment shown in FIG. 4A , which will not be repeated here.
  • the above embodiment shown in FIG. 6 further includes step 602a.
  • Step 602a is performed before step 602 .
  • the terminal device measures the reference signal to obtain a measurement result.
  • Step 602a is similar to step 402a in the above-mentioned embodiment shown in FIG. 4A .
  • Step 602a is similar to step 402a in the above-mentioned embodiment shown in FIG. 4A .
  • Step 602a is similar to step 402a in the above-mentioned embodiment shown in FIG. 4A .
  • step 602b the embodiment shown in FIG. 6 above further includes step 602b, and step 602b is executed before step 602.
  • the second cell sends configuration information to the terminal device.
  • the terminal device receives configuration information from the second cell.
  • step 602b which is similar to step 402b in the example shown in FIG. 4A, please refer to the relevant introduction of step 402b in the example shown in FIG. 4A for details, and details will not be repeated here.
  • step 602 specifically includes: the terminal device sends the measurement result to the second cell according to the configuration information.
  • the second cell sends indication information to the first cell.
  • the first cell receives indication information from the second cell.
  • the indication information is used to instruct the first cell to broadcast the SSB of the first cell and/or the SI of the first cell.
  • Step 603 is similar to step 403 in the above-mentioned embodiment shown in FIG. 4A , but the description method is different. For details, please refer to the related introduction of step 403 in the above-mentioned embodiment shown in FIG. 4A , which will not be repeated here.
  • step 603a may be performed before step 603.
  • the second cell judges whether to instruct the first cell to start broadcasting the SSB of the first cell and/or the SI of the first cell; if yes, perform step 603; if not, perform other operations by the second cell.
  • Step 603a is similar to step 403a in the above-mentioned embodiment shown in FIG. 4A , but the description method is different. For details, please refer to the related introduction of step 403a in the above-mentioned embodiment shown in FIG. 4A , which will not be repeated here.
  • the above embodiment shown in FIG. 6 further includes step 604 and step 605 .
  • Step 604 to step 605 may be performed after step 603 .
  • the terminal device receives the SSB and/or SI from the first cell.
  • the terminal device camps on the first cell according to the SSB of the first cell and/or the SI of the first cell; or, the terminal device performs synchronization in the first cell according to the SSB of the first cell and/or the SI of the first cell ; Or, the terminal device initiates random access to the first cell according to the SSB of the first cell and/or the SI of the first cell.
  • Step 405 is similar to step 204 in the above-mentioned embodiment shown in FIG. 2A .
  • Step 405 please refer to the related introduction of step 204 in the above-mentioned embodiment shown in FIG. 2A , which will not be repeated here.
  • the terminal device receives the reference signal from the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the terminal device sends the measurement result to the second cell.
  • the measurement result is a measurement result obtained by the terminal device measuring the reference signal. It can be seen from this that the terminal device perceives the first cell through the reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the access network equipment is saved.
  • the terminal device sends the measurement result to the second cell. In this way, after the second cell obtains the measurement result, it may instruct the first cell to start broadcasting the SSB and/or SI in combination with the measurement result. That is, a means for triggering the second cell to instruct the first to start broadcasting the SSB and/or SI is provided.
  • the above technical solution can enable the first cell to start broadcasting the SSB and/or SI in a timely manner. It is beneficial for the terminal device to quickly access the first cell, and reduces the time delay for the terminal device to access the first cell.
  • FIG. 7A is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • the communication methods include:
  • the first access network device sends a reference signal of the first cell to a terminal device.
  • the terminal device receives the reference signal from the first cell of the first access network device.
  • the first cell is a cell of the first access network device.
  • the first cell includes one or more cells.
  • the time domain resources occupied by the reference signal of the first cell are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the number of time domain symbols occupied by the reference signal of the first cell is less than the sum of the number of time domain symbols occupied by the SSB of the first cell and the SI of the first cell.
  • the first cell includes cell 1 and cell 2 .
  • cell 1 broadcasts reference signal 1
  • cell 2 broadcasts reference signal 2 .
  • the number of time domain symbols occupied by reference signal 1 of cell 1 is less than the sum of the number of time domain symbols occupied by SSB1 corresponding to cell 1 and SI1 corresponding to cell 1 .
  • the number of time-domain symbols occupied by the reference signal 2 of the cell 2 is less than the sum of the number of time-domain symbols occupied by the SSB2 corresponding to the cell 2 and the SI2 corresponding to the cell 2 .
  • each of the one or more cells is located on a carrier, and different cells are located on different carriers.
  • the carriers on which the one or more cells are respectively located are high-frequency carriers.
  • cell 1 is located on a carrier of 1.8 GHz (gigahertz), and cell 2 is located on a carrier of 1.9 GHz.
  • the access network devices to which the multiple cells respectively belong may be the same access network device or different access network devices, which are not limited in this application.
  • the first cell includes cell 1 and cell 2 .
  • Cell 1 is a cell of access network device 1
  • cell 2 is a cell of access network device 2 . Therefore, the first access network device includes access network device 1 and access network device 2 .
  • the terminal device receives reference signal 1 from cell 1 of access network device 1, and receives reference signal 2 from cell 2 of access network device 2.
  • the first cell includes cell 1 and cell 2 .
  • Cell 1 and cell 2 are two cells of the access network equipment. Therefore, the first access network device includes the access network device.
  • the terminal device receives reference signal 1 and reference signal 2 from the access network device.
  • the reference signal may be referred to as a DRS.
  • the DRS is just an example, and the present application does not limit the name of the reference signal.
  • the reference signal may be any of the following signals: the SSS of the first cell, the PSS of the first cell, the SBB of the first cell, or a newly designed signal, which is not limited in this application.
  • the reference signal of the first cell includes at least one of the following information: first indication information, an identifier of the first cell, and an identifier of a second cell associated with the first cell , the channel number of the second cell, the index of the first cell, the system frame number, the half-frame indication, the index of the reference signal, the beam index of the reference signal, the time-frequency resource for sending the wake-up signal of the first cell, and the wake-up of the first cell.
  • first indication information an identifier of the first cell
  • a second cell associated with the first cell the channel number of the second cell, the index of the first cell, the system frame number, the half-frame indication, the index of the reference signal, the beam index of the reference signal, the time-frequency resource for sending the wake-up signal of the first cell, and the wake-up of the first cell.
  • At least one item of information included in the reference signal is combined below.
  • the first indication information is used to indicate that the first cell is a DCC cell.
  • DCC cells and BCC cells please refer to the related introductions below.
  • the second access network device sends the reference signal on channel 2.
  • the terminal device can determine the channel 2 through the channel number of the second cell, and monitor the reference signal of the second cell on the channel 2.
  • the index of the first cell may also be referred to as the number of the first cell.
  • the second cell is a BCC cell
  • the first cell includes multiple DCC cells.
  • Each DCC cell corresponds to a serial number.
  • the first cell includes N+1 DCC cells, the number of the first DCC cell is 0, the number of the second DCC cell is 1, and so on, the number of the N+1th DCC cell is N.
  • N is an integer greater than or equal to 0.
  • the identification of the first cell and the identification of the second cell are similar to the identification of the first cell in the embodiment shown in Figure 2A above, for details, please refer to the introduction to the identification of the first cell in the embodiment shown in Figure 2A , which will not be repeated here.
  • the reference signal of the first cell may be generated according to a pseudo-random sequence.
  • the pseudo-random sequence may be an m-sequence, a Gold sequence, or a ZC sequence, etc., which are not limited in this application.
  • the reference signal includes at least one item of information shown above.
  • the first access network device may use a pseudo-random sequence to represent the foregoing information. For example, the first access network device may configure an initial value or shift value for generating a pseudo-random sequence according to the foregoing information, and then generate a corresponding pseudo-random sequence.
  • the first cell includes DCC cell 1
  • the pseudo-random sequence used to generate the reference signal of DCC cell 1 is a 127-bit Gold sequence.
  • the Gold sequence is generated by adding two m-sequences modulo 2, and the specific generation process is shown in Figure 7E.
  • c(n) is a pseudo-random sequence for generating the reference signal of DCC cell 1 .
  • the initial value of the first m-sequence is 0000000000000000000000000000001; the 0th to 9th bits of the initial value of the second m-sequence are used to indicate the identity of the BCC cell, and the 11th to 15th bits are used to indicate the index of DCC cell 1 , and the remaining bits are 0.
  • the first access network device obtains the pseudo-random sequence c(n) through the generation process shown in FIG. 7E .
  • the first access network device performs Fourier transform processing or inverse Fourier transform processing on c(n), so as to generate the reference signal of DCC cell 1 .
  • the reference signal includes the identifier of the BCC cell and the index of the reference signal of DCC cell 1 .
  • the terminal device can derive the identity of the BCC cell and the index of the reference signal of DCC cell 1 .
  • the reference signal of the first cell includes at least one sub-signal.
  • the at least one sub-signal reference may be made to the relevant introduction in the embodiment shown in FIG. 2A , which will not be repeated here.
  • the at least one sub-signal can be further understood in combination with the examples shown in FIG. 2D and FIG. 2E , and will not be repeated here.
  • the second access network device sends access information to the terminal device.
  • the terminal device receives the access information from the second access network device.
  • the access information includes access information of the first cell.
  • the access information is used by the terminal device to select a candidate access cell from the first cell for access.
  • the second access network device is the access network device of the second cell, and the first cell is a cell associated with the second cell.
  • the terminal device may camp on or access the second cell.
  • the association between the first cell and the second cell can be characterized by the following two possible aspects:
  • the first cell and the second cell are respectively located on carriers, and the two cells are located on different carriers.
  • carriers can be divided into base layer carriers and capacity layer carriers.
  • the base layer carrier is used to provide the basic signal coverage of the network.
  • the base layer carrier is a low-frequency carrier, so that the signal coverage of the base layer carrier is relatively large, which facilitates the basic signal coverage of the network.
  • the base layer carrier may be called a basic component carrier (basic component carrier, BCC).
  • BCC basic component carrier
  • a cell corresponding to a base layer carrier may be referred to as a base layer cell.
  • Capacity layer carriers are used to provide more network capacity.
  • the capacity layer carrier is a high-frequency carrier, which is convenient for covering areas with high hotspots or high capacity requirements, so as to provide higher network capacity for these areas.
  • the capacity layer carrier may be called a data component carrier (DCC).
  • DCC data component carrier
  • a cell corresponding to a capacity layer carrier may be referred to as a capacity layer cell.
  • the above-mentioned first cell may be called a DCC cell, and the second cell may be called a BCC cell.
  • the second cell is used for basic signal coverage of the network.
  • the first cell is used to provide more network capacity.
  • the names of the first cell and the second cell are only examples, and the application does not limit the names of the first cell and the second cell.
  • the first cell includes cell 1 and cell 2 .
  • the second cell is cell 3.
  • Cell 3 is located on the base layer carrier, that is, cell 3 is a BCC cell.
  • Cell 3 has a larger signal coverage.
  • Cell 1 and cell 2 are respectively located on capacity layer carriers, that is, cell 1 and cell 2 are respectively DCC cells.
  • the signal coverage areas corresponding to cell 1 and cell 2 are relatively small.
  • the first cell includes cell 1 and cell 2 .
  • the second cell is cell 3.
  • Cell 3 has a larger signal coverage.
  • the signal coverage areas corresponding to the cell 1 and the cell 2 respectively may fall within the signal coverage area of the cell 3 . That is, the signal coverage of cell 1 overlaps with the signal coverage of cell 3 .
  • the signal coverage of cell 2 overlaps with the signal coverage of cell 3 .
  • the second cell may include one or more cells.
  • the second cell is cell 3
  • cell 3 is a BCC cell
  • cell 1 and cell 2 are DCC cells associated with the BCC cells.
  • the first cell includes one cell as an example for introduction.
  • the above step 702 may be performed during a process in which the second access network device broadcasts the SSB of the second cell and/or the SI of the second cell.
  • the first cell includes cell 1 and cell 2 .
  • the second cell is cell 3.
  • Cell 1 does not broadcast the SSB of cell 1 and/or the SI of cell 1, but broadcasts reference signal 1 of cell 1.
  • the cell 2 does not broadcast the SSB of the cell 2 and/or the SI of the cell 2, but broadcasts the reference signal 2 of the cell 2.
  • cell 1 and cell 2 are in a minimalist broadcast mode with low power consumption.
  • the cell 3 may broadcast the SSB of the cell 3 and/or the SI of the cell 3, and here it is said that the cell 3 is in a normal broadcast mode.
  • the cell 3 broadcasts the access information of the cell 1 and the access information of the cell 2.
  • terminal devices can perceive cell 1 and cell 2 .
  • terminal device 1 can perceive cell 1
  • terminal device 2 can perceive cell 2 .
  • cell 3 broadcasts the access information of cell 1 and the access information of cell 2 .
  • Cell 1 and cell 2 do not need to broadcast access information, thereby saving energy consumption of cell 1 and cell 2 .
  • Terminal device 1 can acquire access information of cell 1. If terminal device 1 needs to access cell 1 (for example, terminal device 1 has data to be sent), terminal device 1 can quickly access cell 1 according to the access information of cell 1.
  • the terminal device 2 can acquire the access information of the cell 2 . If the terminal device 2 needs to access the cell 2 (for example, the terminal device 2 has data to be sent), the terminal device 2 can quickly access the cell 2 according to the access information of the cell 2.
  • the first cell is located on a first carrier
  • the second cell is located on a second carrier
  • the first carrier is different from the second carrier
  • the first cell includes cell 1 and cell 2 .
  • the second cell is cell 3.
  • Cell 1 is located on high frequency carrier 1
  • cell 2 is located on high frequency carrier 2
  • cell 3 is located on low frequency carrier 1.
  • HF carrier 1 and HF carrier 2 are different.
  • the access information includes at least one of the following: an identifier of the first cell, an index of the first cell, a channel number of the first cell, a priority of the first cell, and a starting time domain of the reference signal
  • the position is relative to the offset of the start time domain position or end time domain position of the SSB corresponding to the second cell, the identifier of the network supported by the first cell, the random access parameters of the first cell, and the selection parameters of the first cell , the reselection parameters of the first cell, the time-frequency resources for sending the wake-up signal of the first cell, the characteristic parameters of the pseudo-random sequence used for the wake-up signal of the first cell, or the conditions for the terminal device to send the wake-up signal of the first cell.
  • At least one item of information included in the access information is introduced below.
  • the identity of the first cell the index of the first cell, the channel number of the first cell, the time-frequency resource for sending the wake-up signal of the first cell, the characteristic parameters of the pseudo-random sequence used for the wake-up signal of the first cell, and the terminal equipment transmission
  • the relevant introduction in the embodiment shown in FIG. 2A which will not be repeated here.
  • the priority of the first cell is used to indicate the priorities corresponding to one or more cells included in the first cell.
  • the first cell includes multiple DCC cells, and each DCC cell has a corresponding value.
  • the first access network device determines the priority of the first cell according to the frequency band of the carrier where the first cell is located. For example, the transmit power required by the first access network device to transmit a signal on a high-frequency carrier is relatively large. Therefore, the priority of the cell located in the high-frequency carrier is low, and the priority of the cell located in the low-frequency carrier is high. Thereby, the energy consumption expense of the access network equipment is further saved, and the energy saving effect is improved.
  • the offset of the start time domain position of the reference signal relative to the start time domain position or the end time domain position of the SSB of the second cell is offset.
  • the offset of the start time domain symbol of the reference signal relative to the start time domain symbol of the SSB corresponding to the second cell is offset.
  • the first cell includes cell 1 and cell 2 .
  • the initial time-domain symbol of reference signal 1 of cell 1 is time-domain symbol 1 .
  • the initial time domain symbol of reference signal 2 of cell 2 is time domain symbol 2 .
  • the second cell is cell 3, and the initial time domain symbol of the SSB of cell 3 is time domain symbol 0.
  • the offset between the initial time domain symbol of the reference signal 1 of the cell 1 and the initial time domain symbol of the SSB of the cell 3 is 1.
  • the offset between the start time domain symbol of the reference signal 2 of the cell 2 and the start time domain symbol of the SSB of the cell 3 is 2.
  • the identifier of the network supported by the first cell is used by the terminal device to determine whether to access the first cell.
  • the terminal device cannot access the first cell.
  • the random access parameters of the first cell include at least one of the following: PRACH time-frequency resources, or a root sequence index of a preamble.
  • the selection parameters of the first cell are used by the terminal device to select candidate access cells from the first cell.
  • the selection parameter of the first cell includes a received power threshold value of the reference signal. That is, if the terminal device detects that the received power of the reference signal is greater than or equal to the received power threshold, the terminal device may select this cell as a candidate access cell.
  • the reselection parameters of the first cell are used by the terminal device to reselect candidate access cells from the first cell.
  • the reselection parameters of the first cell include at least one of the following: a measurement period of the reference signal, a receiving power threshold for triggering the terminal device to measure the reference signal, a measurement frequency priority, The reselected reference signal received power threshold.
  • Triggering the terminal device to measure the received power threshold of the reference signal means that the terminal device can measure reference signals of other cells when the received power of the reference signal of the accessed cell of the terminal device is less than or equal to the received power threshold.
  • the measurement frequency priority is used to indicate the measurement priority of the reference signals of different frequency cells of the terminal equipment.
  • the energy consumption consumed by the base station broadcasting SSB and/or SI in a low-frequency cell is less than the energy consumption overhead of broadcasting SSB and/or SI in a high-frequency cell. Therefore, the measurement priority of low frequency cells may be higher than that of high frequency frequencies. In this way, the terminal device can preferentially select to measure the reference signal of the low-frequency cell, so as to access the low-frequency cell.
  • the reference signal received power threshold value for the first cell reselection means the received power of the reference signal of the candidate access cell for terminal equipment reselection is greater than or equal to the reference signal received power threshold for the first cell reselection limit.
  • the access information of the first cell may include selection information for the terminal device to select a candidate access cell and access information for the terminal device to access the candidate access cell .
  • the access information of the first cell includes the SI of the first cell.
  • the second cell may broadcast the SI of the first cell.
  • the terminal device can quickly access the candidate access cell.
  • the first access network device does not need to broadcast the access information of the first cell, which saves energy consumption of the first access network device.
  • the first cell includes all cells associated with the second cell; or, the first cell includes some cells associated with the second cell.
  • the first cell is a DCC cell
  • the second cell is a BCC cell.
  • the first cell includes all DCC cells associated with the BCC cell; or, the first cell includes some DCC cells associated with the BCC cell.
  • the second cell may broadcast access information of all cells associated with the second cell by default. This makes it convenient for the terminal device to select and access candidate access cells from the first cell according to the access information.
  • the second cell may broadcast the access information of a cell with a higher priority among the cells associated with the second cell. That is, the first cell includes some cells associated with the second cell. Therefore, the broadcast volume of the second cell is reduced, and the broadcast energy consumption of the second cell is saved.
  • the second cell may broadcast the access information of the first cell that the terminal device requests to broadcast. For details, please refer to the relevant introduction in step 702a below.
  • step 702a further includes step 702a, and step 702a may be performed before step 702.
  • the terminal device sends the first request to the second access network device.
  • the second access network device receives the first request from the terminal device.
  • the first request is used to request the access information of the first cell from the second access network device.
  • the second cell broadcasts the SSB of the second cell and the SI of the second cell.
  • the terminal device camps on or accesses the second cell, and the terminal device receives the broadcast message of the second cell.
  • the broadcast message includes the SSB of the second cell and the SI of the second cell.
  • the terminal device sends the first request to the second access network device. Then the second cell broadcasts the SSB of the second cell and the SI of the second cell, and at the same time broadcasts the access information of the first cell.
  • the terminal device requests the second access network device to broadcast the access information of the cell associated with the second cell.
  • the terminal device may not specify which cells' access information the second access network device broadcasts.
  • the first access network device may broadcast access information of all cells associated with the second cell.
  • the first cell includes all cells associated with the second cell.
  • the first request is used to broadcast the access information of the specified cell to the requesting second access network device.
  • the designated cell is a part of the cell associated with the second cell. Therefore, the first access network device may broadcast the access information of the designated cell.
  • the second access network device does not need to broadcast the access information of all cells associated with the second cell. The broadcast amount of the second access network device is reduced, thereby reducing the energy consumption of the second access network device.
  • the first cell includes some cells associated with the second cell.
  • the BCC cell broadcasts the SSB of the BCC cell and the SI of the BCC cell.
  • the cells associated with the second cell include DCC cell 1 and DCC cell 2. If the terminal device needs to access the DCC cell (for example, the terminal device has data to be sent), the terminal device may request the BCC cell for access information of the DCC cell associated with the BBC cell through the first request. After the BCC cell receives the first request, the BCC cell may broadcast the access information of DCC cell 1 and the access information of the DCC cell.
  • the above step 702a specifically includes: the terminal device sends the first request to the second access network device through a preamble or an RRC system request message.
  • the preamble includes the first request; or, the RRC system request message includes the first request.
  • the terminal device generates the initial value or shift value of the pseudo-random sequence of the preamble according to the first request configuration. Then, the terminal device generates a pseudo-random sequence according to the initial value or a shift value, and then generates a preamble according to the pseudo-random sequence.
  • two bearers for the terminal device to send the first request are provided, which provides a basis for implementation of the solution.
  • the terminal device sends the first request to the second access network device by using the preamble, and the terminal device does not need to access the second cell.
  • the terminal device can quickly transmit information to the second access network device, so that the terminal device can quickly obtain the access information of the first cell. This is beneficial for the terminal device to quickly select a candidate access cell and access the candidate access cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • the above step 702 specifically includes: when the terminal device detects that the received power in the reference signal of the first cell is greater than or equal to a threshold value, the terminal device sends the first request to the second access network device.
  • the threshold value may be preset, or configured, or defined by a communication standard, which is not specifically limited in this application.
  • the terminal device when the terminal device detects that the received power of the reference signal is greater than a threshold value, the terminal device requests the second access network device for access information of the first cell. This can prevent the terminal device from frequently requesting the second access network device to broadcast the access information of the first cell, thereby saving energy consumption of the second access network device.
  • the received power of the reference signal is greater than the threshold value, it indicates that the terminal device receives a relatively high signal strength of the cell corresponding to the reference signal. In this way, if the terminal device subsequently accesses the cell, the cell can provide better communication quality for the terminal device. Thereby improving communication performance.
  • step 702b further includes step 702b, and step 702b may be performed before step 703.
  • the second access network device sends second indication information to the terminal device.
  • the terminal device receives the second indication information from the second access network device.
  • the second indication information is used to indicate that the second cell is a BCC cell.
  • the second access network device may indicate that the second cell is a BCC cell through the second indication information. In this way, the terminal device can request the access information of the first cell from the second cell.
  • step 701 can be executed first, and then step 702b can be executed; or, step 702b can be executed first, and then step 701 can be executed; or step 701 and step 702b can be executed simultaneously according to circumstances.
  • the above embodiment shown in FIG. 7A further includes step 702c.
  • the second access network device sends the receiving power threshold used for second cell reselection to the terminal device.
  • the terminal device may reselect the other second cell.
  • step 702c can be executed first, and then step 701, step 702a, step 702b, and step 702 can be executed; or, step 701, step 702a, step 702b, and step 702 can be executed first, and then step 702c is executed, which is not limited in this application.
  • the terminal device determines a candidate access cell.
  • the candidate access cell is selected from the first cell according to the access information and the reference signal.
  • the terminal device selects a candidate access cell from the first cell according to the access information and the reference signal.
  • the access information includes the frequency channel number of the DCC cell and the priority of the DCC cell.
  • the terminal device can search for the DCC cell according to the access information, and measure the power of the DCC cell. For example, the terminal device sequentially searches for DCC cells on the frequency channel where each DCC cell is located according to the order of priority of the DCC cells from high to low.
  • the terminal device detects that the received power of the reference signal of the DCC cell exceeds the reported received power threshold, and/or, the DCC cell is the cell with the strongest signal on the frequency channel where it is located, then the terminal device can use the DCC cell as a candidate to receive Enter the community.
  • the terminal device may not detect reference signals of other DCC cells. That is, the DCC cell is used as the finally determined candidate access cell. In this way, the terminal device can quickly determine the candidate access cell, so that the terminal device quickly accesses the candidate access cell.
  • step 704 may be performed after step 703.
  • the terminal device If there is data to be sent on the terminal device, the terminal device initiates random access to the candidate access cell according to the access information.
  • the candidate access cell is DCC cell 1.
  • the access information includes random access parameters of DCC cell 1 .
  • the terminal device initiates random access to the candidate access cell through the random access parameter of DCC cell 1.
  • step 704a further includes step 704a, and step 704a may be performed before step 704 and after step 703.
  • the terminal device reselects a candidate access cell.
  • step 704a For the specific execution process of step 704a, please refer to the detailed introduction of the embodiment shown in FIG. 7H later, and details will not be repeated here.
  • step 704 specifically includes: if there is data to be sent on the terminal device, the terminal device initiates random access to the reselected candidate access cell according to the access information.
  • the terminal device perceives the first cell through a reference signal of the first cell.
  • the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the first access network device is saved.
  • the terminal device acquires the access information of the first cell from the second access network device. In this way, the terminal device can select a candidate access cell to access according to the access information and the reference signal of the first cell. Thus, the terminal device quickly accesses the candidate access cell. The time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • Step 704a specifically includes steps 7041 to 7045.
  • FIG. 7H is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • the communication method includes:
  • the terminal device determines the third cell
  • the third cell is a DCC cell.
  • the terminal device searches for a DCC cell.
  • the terminal device may periodically search for the DCC cell; or, the terminal device searches for the DCC cell when the received power of the reference signal of the candidate access cell selected in step 704 is lower than the power threshold for triggering measurement of the reference signal.
  • the terminal device can search for DCC cells according to the priority of the DCC cells.
  • the terminal device may determine the third cell.
  • the terminal device detects that the received power of the reference signal of the third cell is greater than the reference signal received power threshold used for reselection of the first cell, and the terminal device may determine the third cell.
  • the terminal device judges whether the fourth cell associated with the third cell is the same cell as the second cell; if yes, execute step 7045; if not, execute step 7043;
  • the third cell is a cell associated with the fourth cell.
  • the association between the third cell and the fourth cell is similar to the association between the first cell and the second cell in step 701 in the embodiment shown in FIG. 7A.
  • the third cell is a DCC cell
  • the fourth cell is a BCC cell.
  • the terminal device judges whether the fourth cell and the second cell are the same BCC cell, if yes, execute step 7045; if not, execute step 7043.
  • a possible implementation manner for the terminal device to determine whether the fourth cell and the second cell are the same BCC cell is introduced below.
  • the terminal device judges whether the broadcast message of the second cell includes the identifier of the third cell. If the identifier of the third cell is included, it means that the fourth cell and the second cell are the same BCC cell. If the identifier of the third cell is not included, it means that the fourth cell is not the same BCC cell as the second cell.
  • the terminal device judges whether the received power of the SSB of the fourth cell is greater than the received power threshold for reselection of the second cell; if yes, perform step 7044; if not, perform other operations.
  • the terminal device may determine the fourth cell associated with the third cell according to the information carried in the reference signal of the third cell.
  • the reference signal of the third cell includes the identity of the fourth cell. Then the terminal device searches for the fourth cell on some or all frequency channels according to the identifier of the fourth cell.
  • the reference signal of the third cell includes the identifier of the fourth cell and the frequency channel number of the fourth cell.
  • the terminal device may search for the fourth cell on the channel corresponding to the channel number.
  • the terminal device measures the received power of the SSB broadcast by the fourth cell, and if the received power of the SSB is greater than or equal to the received power threshold value for reselection of the second cell, then perform step 7044; if the received power of the SSB is less than the second The receiving power threshold value of cell reselection, then the terminal device performs other operations.
  • performing other operations by the terminal device includes: the terminal device re-searches for a DCC cell to reselect a DDC cell.
  • the terminal device selects the fourth cell to camp on or access, and uses the third cell as a candidate access cell for reselection.
  • the terminal device takes the third cell as a candidate access cell for reselection.
  • FIG. 7A shows an implementation manner in which the first cell and the second cell belong to different access network devices. That is, the first access network device and the second access network device are two different access network devices. In practical applications, the access network devices to which the first cell and the second cell belong may also be the same. That is, the first access network device and the second access network device are the same access network device.
  • the first cell includes cell 1 and cell 2 .
  • the second cell is cell 3.
  • Cell 1, cell 2 and cell 3 are three cells of the access network equipment.
  • Cell 1 and Cell 2 are in minimal broadcast mode, and Cell 3 is in normal broadcast mode.
  • FIG. 8 is similar to the aforementioned embodiment shown in FIG. 7A , and the difference is specifically described in the following description of the embodiment shown in FIG. 8 .
  • FIG. 8 is a schematic diagram of another embodiment of a communication method according to an embodiment of the present application.
  • communication methods include:
  • the access network device sends a reference signal of the first cell to the terminal device.
  • the terminal device receives the reference signal from the first cell of the access network device.
  • the access network device sends the access information of the first cell to the terminal device.
  • the terminal device receives the access information of the first cell from the access network device.
  • Steps 801 to 802 are similar to steps 701 to 702 in the embodiment shown in FIG. 7A .
  • steps 701 to 702 in the embodiment shown in FIG. 7A .
  • step 801 can be executed first, and then step 802 can be executed; or, step 802 can be executed first, and then step 801 can be executed; or step 801 and step 802 can be executed simultaneously according to the situation, which is not limited in this application.
  • step 802a further includes step 802a, and step 802a may be performed before step 802.
  • the terminal device sends a first request to the access network device.
  • the access network device receives the first request from the terminal device.
  • step 801 may be executed first, and then step 802a may be executed; or, step 802a may be executed first, and then step 801; or, step 801 and step 802a may be executed at the same time according to the situation, which is not limited in this application.
  • step 802b may be performed before step 802a.
  • the access network device sends indication information to the terminal device.
  • the terminal device receives the indication information from the access network device.
  • Step 802b is similar to step 702b in the above-mentioned embodiment shown in FIG. 7A .
  • Step 802b is similar to step 702b in the above-mentioned embodiment shown in FIG. 7A .
  • the terminal device determines a candidate access cell.
  • Step 803 is similar to step 703 in the above-mentioned embodiment shown in FIG. 7A .
  • Step 803 please refer to the related introduction of step 703 in the above-mentioned embodiment shown in FIG. 7A , and details will not be repeated here.
  • step 804 is executed after step 803.
  • the terminal device If there is data to be sent on the terminal device, the terminal device initiates random access to the candidate access cell according to the access information.
  • Step 804 is similar to step 704 in the above-mentioned embodiment shown in FIG. 7A .
  • Step 804 please refer to the related introduction of step 704 in the above-mentioned embodiment shown in FIG. 7A , and details will not be repeated here.
  • step 804a further includes step 804a, and step 804a may be performed before step 804 and after step 803.
  • the terminal device reselects a candidate access cell.
  • Step 804a is similar to step 704a in the above-mentioned embodiment shown in FIG. 7A .
  • Step 804a is similar to step 704a in the above-mentioned embodiment shown in FIG. 7A .
  • Step 804a please refer to the relevant introduction of step 704a in the above-mentioned embodiment shown in FIG. 7A , and details will not be repeated here.
  • step 804 specifically includes: if there is data to be sent on the terminal device, the terminal device initiates random access to the reselected candidate access cell according to the access information.
  • the terminal device perceives the first cell through a reference signal of the first cell. Moreover, the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell. In this way, the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the access network equipment is saved.
  • the terminal device acquires the access information of the first cell from the access network device. In this way, the terminal device can select a candidate access cell to access according to the access information and the reference signal of the first cell. Realize quick access of the terminal equipment to the candidate access cell, reduce the time delay for the terminal equipment to access the cell, and improve the communication performance.
  • the first access network device may be replaced by the first cell
  • the second access network device may be replaced by the second cell. That is to say, the technical solution of this application is introduced by the first cell and the second cell as executive bodies. Another way of describing the technical solution shown in FIG. 7A is introduced below through the embodiment shown in FIG. 9 .
  • FIG. 9 is a schematic diagram of another embodiment of the communication method of the embodiment of the present application.
  • communication methods include:
  • a terminal device receives a reference signal from a first cell.
  • the first cell is a cell to which the first access network device belongs.
  • the terminal device receives access information from the second cell, where the access information includes access information of the first cell.
  • the second cell is a cell to which the second access network device belongs.
  • Steps 901 to 902 are similar to steps 701 to 702 in the embodiment shown in FIG. 7A .
  • steps 701 to 702 are similar to steps 701 to 702 in the embodiment shown in FIG. 7A .
  • steps 701 to 702 please refer to the relevant introduction of steps 701 to 702 in the embodiment shown in FIG. 7A , and details will not be repeated here.
  • step 902a the above embodiment shown in FIG. 9 further includes step 902a, and step 902a may be performed before step 902.
  • the terminal device sends a first request to the second cell.
  • the first request is used to request the second cell to send the access information of the first cell.
  • step 902b the above embodiment shown in FIG. 9 further includes step 902b, and step 902b may be performed before step 902.
  • the terminal device receives second indication information from the second cell.
  • Step 902a is similar to step 702a in the aforementioned embodiment shown in FIG. 7A, and step 902b is similar to step 702b in the aforementioned embodiment shown in FIG. 7A.
  • step 702a please refer to step 702a and The related introduction of step 702b will not be repeated here.
  • the terminal device determines a candidate access cell.
  • the terminal device If there is data to be sent on the terminal device, the terminal device initiates random access to the candidate access cell according to the access information.
  • Steps 903 to 904 are similar to steps 703 to 704 in the above-mentioned embodiment shown in FIG. 7A .
  • steps 703 to 704 in the above-mentioned embodiment shown in FIG. 7A please refer to the related introduction of step 703 in the above-mentioned embodiment shown in FIG. 7A , which will not be repeated here.
  • step 904a the above embodiment shown in FIG. 9 further includes step 904a, and step 904a may be performed before step 904.
  • the terminal device reselects a candidate access cell.
  • step 904 specifically includes: if there is data to be sent on the terminal device, the terminal device initiates random access to the reselected candidate access cell according to the access information.
  • Step 904a is similar to step 704a in the above-mentioned embodiment shown in FIG. 7A .
  • Step 904a is similar to step 704a in the above-mentioned embodiment shown in FIG. 7A .
  • the terminal device perceives the first cell through a reference signal of the first cell. Moreover, the time domain resources occupied by the reference signal are less than the sum of the time domain resources occupied by the SSB of the first cell and the SI of the first cell. In this way, the power consumption of the first cell for broadcasting the reference signal is relatively low, that is, the first cell is in a broadcast mode with low power consumption. Therefore, the energy consumption of the access network equipment is saved.
  • the terminal device acquires the access information of the first cell from the access network device. In this way, the terminal device can select a candidate access cell to access according to the access information and the reference signal of the first cell. Realize quick access of the terminal equipment to the candidate access cell, reduce the time delay for the terminal equipment to access the cell, and improve the communication performance.
  • FIG. 10 is a schematic diagram of another embodiment of a communication method according to an embodiment of the present application.
  • communication methods include:
  • the second access network device sends wake-up signal information of the first cell to the terminal device.
  • the terminal device receives the wake-up signal information of the first cell from the second access network device.
  • the second access network device is an access network device of the second cell
  • the first cell is a cell associated with the second cell.
  • the wake-up signal information of the first cell includes at least one of the following: the time-frequency resource for sending the wake-up signal of the first cell, the characteristic parameters of the pseudo-random sequence used by the wake-up signal of the first cell, or the terminal device sending the wake-up signal of the first cell conditions of.
  • the content included in the wake-up signal information of the first cell please refer to the relevant introduction in the embodiment shown in FIG. 7A .
  • the first access network device sends a reference signal of the first cell to the terminal device.
  • the terminal device receives the reference signal from the first cell of the first access network device.
  • the first access network device is the access network device of the first cell.
  • the relevant introduction of the reference signal of the first cell refer to the relevant introduction of the reference signal of the first cell in step 701 in the embodiment shown in FIG. 7A , which will not be repeated here.
  • the terminal device sends a wake-up signal of the candidate access cell to the first access network device.
  • the first access network device receives a wake-up signal from a candidate access cell of the terminal device.
  • the terminal device measures the reference signal of the first cell, and selects a candidate access cell from the first cell.
  • the terminal device sends a wake-up signal of the candidate access cell to the first access network device.
  • the terminal device when the second condition is satisfied, sends a wake-up signal of the candidate access cell to the first access network device.
  • the second condition includes at least one of the following: the received power of the reference signal of the candidate access cell is greater than the third threshold; or the reference signal of the candidate access cell is the reference signal with the highest received power in the first cell.
  • the wake-up signal information of the first cell in the above step 1001 includes the time-frequency resource for sending the wake-up signal of the candidate access cell and the characteristic parameters of the pseudo-random sequence used for the wake-up signal of the candidate access cell.
  • step 1003a the embodiment shown in FIG. 10 further includes step 1003a, and step 1003a is executed after step 1003.
  • Step 1003a The terminal device generates a wake-up signal according to the characteristic parameters of the pseudo-random sequence used in the wake-up signal of the candidate access cell.
  • Step 1003a is similar to step 202b in the above-mentioned embodiment shown in FIG. 2A .
  • Step 1003a is similar to step 202b in the above-mentioned embodiment shown in FIG. 2A .
  • the above step 1003 specifically includes: the terminal device sends the wake-up signal of the candidate access cell to the first access network device on the time-frequency resource for sending the wake-up signal of the candidate access cell.
  • the embodiment shown in FIG. 10 further includes steps 1004 to 1006.
  • the first access network device judges whether to start broadcasting SSB and/or SI in the candidate access cell; if yes, execute step 1005; if not, the first access network device performs other operations.
  • the first access network device determines whether to start broadcasting the SSB and/or SI in the candidate access cell according to the third information. If yes, start broadcasting SSB and/or SI in the candidate access cell.
  • the third information includes at least one of the following: the load of the candidate access cell, the load of the second cell, and the received power of the wake-up signal received by the first access network device.
  • the first access network device may broadcast the SSB and/or SI on the candidate access cell.
  • the first access network device may not start broadcasting the SSB and/or SI on the candidate access cell.
  • the first access network device maintains the original state, that is, the first access network device does not broadcast SSB and/or SI in the candidate access cell .
  • the first access network device sends the SSB and/or SI of the candidate access cell to the terminal device; correspondingly, the terminal device receives the SSB and/or SI of the candidate access cell from the first access network device.
  • the terminal device camps in the candidate access cell according to the SSB and/or SI; or, the terminal device synchronizes in the candidate access cell according to the SSB and/or SI; The cell initiates random access.
  • steps 1005 to 1006 and steps 203 to 204 in the embodiment shown in FIG. 2A for details, please refer to the related introduction of steps 203 to 204 in the embodiment shown in FIG. 2A , which will not be repeated here.
  • the terminal device receives wake-up signal information from the first cell of the second access network device.
  • the second access network device is the access network device of the second cell
  • the first cell is a cell associated with the first cell.
  • the terminal device receives the reference signal from the first cell of the first access network device.
  • the terminal device sends a wake-up signal of the candidate access cell to the candidate access cell.
  • the wake-up signal is used to wake up the first access network device to broadcast SSB and/or SI in the candidate access cell. It can be seen from this that the terminal device perceives the first cell through the reference signal of the first cell.
  • the time-domain resources occupied by the reference signal are less than the sum of the time-domain resources occupied by the SSB of the first cell and the SI of the first cell.
  • the power consumption of the first access network device for broadcasting the reference signal is low, that is, the first cell is in a simplified broadcast mode with low power consumption.
  • the terminal device perceives the first cell through the reference signal.
  • the terminal device sends the wake-up signal of the candidate access cell to the first access network device according to the wake-up signal information of the first cell.
  • the first access network device can start broadcasting the SSB and/or SI in the candidate access cell in time. In this way, the terminal device can quickly access the candidate access cell. Therefore, the time delay for the terminal equipment to access the cell is reduced, and the communication performance is improved.
  • FIG. 11 is a schematic structural diagram of a communication device 1100 according to an embodiment of the present application.
  • the communication device 1100 includes a receiving unit 1101 and a sending unit 1102 .
  • the communication device 1100 further includes a processing unit 1103 .
  • the communication device 1100 When the communication device 1100 is a terminal device, or a chip in the terminal device, the communication device 1100 can be used to execute Part or all of the steps, for details, reference may be made to relevant descriptions of the embodiments shown in FIG. 2A , FIG. 3 , FIG. 4A , FIG. 5B , FIG. 6 and FIG. 10 .
  • the receiving unit 1101 is configured to execute step 201 in the embodiment shown in FIG. 2A
  • the sending unit 1102 is configured to execute step 202 in the embodiment shown in FIG. 2A .
  • the processing unit 1103 is configured to execute step 202a, step 202b, and step 204 in the embodiment shown in FIG. 2A .
  • the receiving unit 1101 is configured to execute step 301 in the embodiment shown in FIG. 3
  • the sending unit 1102 is configured to execute step 302 in the embodiment shown in FIG. 3 .
  • the processing unit 1103 is configured to execute step 302a, step 302b, and step 304 in the embodiment shown in FIG. 3 .
  • the receiving unit 1101 is configured to execute step 401 in the embodiment shown in FIG. 4A
  • the sending unit 1102 is configured to execute step 402 in the embodiment shown in FIG. 4A .
  • the receiving unit 1101 is configured to execute step 402b and step 404 in the embodiment shown in FIG. 4A .
  • the processing unit 1103 is configured to execute step 402a and step 405 in the embodiment shown in FIG. 4A .
  • the receiving unit 1101 is configured to execute step 501 in the embodiment shown in FIG. 5B
  • the sending unit 1102 is configured to execute step 502 in the embodiment shown in FIG. 5B .
  • the receiving unit 1101 is configured to execute step 502b and step 503 in the embodiment shown in FIG. 5B .
  • the processing unit 1103 is configured to execute step 502a and step 504 in the embodiment shown in FIG. 5B .
  • the receiving unit 1101 is configured to execute step 601 in the embodiment shown in FIG. 6
  • the sending unit 1102 is configured to execute step 602 in the embodiment shown in FIG. 6 .
  • the receiving unit 1101 is configured to execute step 602b and step 604 in the embodiment shown in FIG. 6 .
  • the processing unit 1103 is configured to execute step 602a and step 605 in the embodiment shown in FIG. 6 .
  • the receiving unit 1101 is configured to execute step 1001 and step 1002 in the embodiment shown in FIG. 10 .
  • the sending unit 1102 is configured to execute step 1003 in the embodiment shown in FIG. 10 .
  • the receiving unit 1101 is further configured to execute step 1005 in the embodiment shown in FIG. 10 .
  • the processing unit 1103 is configured to execute step 1006 in the embodiment shown in FIG. 10 .
  • the communication device 1100 When the communication device 1100 is an access network device, or a chip in the access network device, the communication device 1100 can be used to perform some or all of the steps performed by the access network device in the embodiment shown in FIG. 2A; the communication device 1100 It can be used to execute some or all of the steps performed by the first cell in the embodiment shown in FIG. 3; the communication device 1100 can be used to execute the first access network device or Part or all of the steps performed by the second access network device.
  • the communication apparatus 1100 may be configured to perform some or all of the steps performed by the second access network device in the embodiment shown in FIG. 10 .
  • FIG. 10 For details, reference may be made to relevant descriptions of the embodiments shown in FIG. 2A , FIG. 3 , FIG. 4A , FIG. 5B , FIG. 6 and FIG. 10 .
  • the sending unit 1102 is configured to execute step 201 in the embodiment shown in FIG. 2A .
  • the receiving unit 1101 is configured to execute step 202 in the embodiment shown in FIG. 2A,
  • the processing unit 1103 is configured to execute step 203a in the embodiment shown in FIG. 2A .
  • the sending unit 1102 is configured to execute step 203 in the embodiment shown in FIG. 2A .
  • the sending unit 1102 is configured to execute step 301 in the embodiment shown in FIG. 3 .
  • the receiving unit 1101 is configured to execute step 302 in the embodiment shown in FIG. 3 ,
  • the processing unit 1103 is configured to execute step 303a in the embodiment shown in FIG. 3 .
  • the sending unit 1102 is configured to execute step 303 in the embodiment shown in FIG. 3 .
  • the sending unit 1102 is configured to execute step 401 in the embodiment shown in FIG. 4A .
  • the receiving unit 1101 is configured to execute step 403 in the embodiment shown in FIG. 4A,
  • the sending unit 1102 is configured to execute step 404 in the embodiment shown in FIG. 4A .
  • the sending unit 1102 is configured to execute step 501 in the embodiment shown in FIG. 5B .
  • the receiving unit 1101 is configured to execute step 502 in the embodiment shown in FIG. 5B ,
  • the sending unit 1102 is further configured to execute step 502b and step 503 in the embodiment shown in FIG. 5B .
  • processing unit 1103 is further configured to execute step 503a in the embodiment shown in FIG. 5B .
  • the sending unit 1102 is configured to execute step 601 in the embodiment shown in FIG. 6 .
  • the receiving unit 1101 is configured to execute step 603 in the embodiment shown in FIG. 6,
  • the sending unit 1102 is further configured to execute step 604 in the embodiment shown in FIG. 6 .
  • the receiving unit 1101 is configured to execute step 402 in the embodiment shown in FIG. 4A
  • the sending unit 1102 is configured to execute step 403 in the embodiment shown in FIG. 4A .
  • the sending unit 1102 is further configured to execute step 402b in the embodiment shown in FIG. 4A .
  • processing unit 1103 is further configured to execute step 403a in the embodiment shown in FIG. 4A .
  • the receiving unit 1101 is configured to execute step 602 in the embodiment shown in FIG. 6
  • the sending unit 1102 is configured to execute step 603 in the embodiment shown in FIG. 6 .
  • the sending unit 1102 is further configured to execute step 602b in the embodiment shown in FIG. 6 .
  • processing unit 1103 is further configured to execute step 603a in the embodiment shown in FIG. 4A .
  • the sending unit 1102 is configured to execute step 1002 in the embodiment shown in FIG. 10
  • the receiving unit 1101 is configured to execute step 1003 in the embodiment shown in FIG. 10 .
  • processing unit 1103 is configured to execute step 1004 in the embodiment shown in FIG. 10
  • sending unit 1102 is configured to execute step 1005 in the embodiment shown in FIG. 10 .
  • FIG. 12 is a schematic structural diagram of a communication device 1200 according to an embodiment of the present application.
  • the communication device 1200 includes a receiving unit 1201 and a processing unit 1202 .
  • the communication device 1200 further includes a sending unit 1203 .
  • the communication device 1200 When the communication device 1200 is a terminal device, or a chip in the terminal device, the communication device 1200 may be used for some or all steps performed by the terminal device in the embodiments shown in FIG. 7A , FIG. 7H , FIG. 8 and FIG. 9 .
  • the communication device 1200 may be used for some or all steps performed by the terminal device in the embodiments shown in FIG. 7A , FIG. 7H , FIG. 8 and FIG. 9 .
  • FIG. 7A , FIG. 7H , FIG. 8 and FIG. 9 please refer to the related introductions of the embodiments shown in FIG. 7A , FIG. 7H , FIG. 8 and FIG. 9 , which will not be repeated here.
  • the receiving unit 1201 is configured to execute step 701 and step 702 in the embodiment shown in FIG. 7A
  • the processing unit 1202 is configured to execute step 703 in the embodiment shown in FIG. 7A .
  • the sending unit 1203 is configured to execute step 702a in the embodiment shown in FIG. 7A
  • the receiving unit 1201 is configured to execute step 702b and step 702c in the embodiment shown in FIG. 7A .
  • processing unit 1202 is further configured to execute step 704a and step 704 in the embodiment shown in FIG. 7A .
  • processing unit 1202 is further configured to execute step 7041 to step 7045 in the embodiment shown in FIG. 7H .
  • the receiving unit 1201 is configured to execute step 801 and step 802 in the embodiment shown in FIG. 8
  • the processing unit 1202 is configured to execute step 803 in the embodiment shown in FIG. 8 .
  • the sending unit 1203 is configured to execute step 802a in the embodiment shown in FIG. 8
  • the receiving unit 1201 is configured to execute step 802b and step 802c in the embodiment shown in FIG. 8 .
  • processing unit 1202 is further configured to execute step 804a and step 804 in the embodiment shown in FIG. 8 .
  • the receiving unit 1201 is configured to execute step 901 and step 902 in the embodiment shown in FIG. 9
  • the processing unit 1202 is configured to execute step 903 in the embodiment shown in FIG. 9 .
  • the sending unit 1203 is configured to execute step 902a in the embodiment shown in FIG. 9
  • the receiving unit 1201 is configured to execute step 902b and step 902c in the embodiment shown in FIG. 9 .
  • processing unit 1202 is further configured to execute step 904a and step 904 in the embodiment shown in FIG. 9 .
  • FIG. 13 is a schematic structural diagram of a communication device 1300 according to an embodiment of the present application.
  • the communication device 1300 includes a sending unit 1301 .
  • the communication device 1300 further includes a receiving unit 1302 .
  • the communication device 1300 When the communication device 1300 is an access network device, or a chip in the access network device, the communication device 1300 may be used for some or all steps performed by the second access network device in the embodiment shown in FIG. 7A .
  • the communication apparatus 1300 may be configured to perform some or all of the steps performed by the access network device in the embodiment shown in FIG. 8 .
  • the communication device 1300 may be configured to perform some or all of the steps performed by the second cell in the embodiment shown in FIG. 9 .
  • the sending unit 1301 is configured to execute step 702 in the embodiment shown in FIG. 7A .
  • the receiving unit 1302 is configured to execute step 702a in the embodiment shown in FIG. 7A .
  • the sending unit 1301 is configured to execute step 702b and step 702c in the embodiment shown in FIG. 7A .
  • the sending unit 1301 is configured to execute step 802 in the embodiment shown in FIG. 8 .
  • the receiving unit 1302 is configured to execute step 802a in the embodiment shown in FIG. 8 .
  • the sending unit 1301 is configured to execute step 802b in the embodiment shown in FIG. 8 .
  • the sending unit 1301 is configured to execute step 802 in the embodiment shown in FIG. 9 .
  • the receiving unit 1302 is configured to execute step 902a in the embodiment shown in FIG. 9 .
  • the sending unit 1301 is configured to execute step 902b in the embodiment shown in FIG. 9 .
  • FIG. 14 is another schematic structural diagram of a communication device 1400 in an embodiment of the present application.
  • the communication device 1400 includes: a processor 1401 , a memory 1402 and a transceiver 1403 .
  • the processor 1401, the memory 1402 and the transceiver 1403 are respectively connected through a bus, and computer instructions are stored in the memory.
  • the communication device 1400 may be used to execute the steps performed by the access network device in the embodiment shown in FIG. 2A .
  • the communication device 1400 can be used to perform the steps performed by the first cell in the embodiment shown in FIG. 3; the communication device 1400 can be used to perform the first access in the embodiments shown in FIG. 4A, FIG. 5B, FIG.
  • the steps performed by the network device or the second access network device; the communication device 1400 may be used to perform the steps performed by the second access network device in the embodiment shown in FIG. 7A; the communication device 1400 may be used to perform the steps shown in FIG. 8
  • the steps performed by the access network device in the embodiment; the communication apparatus 1400 may be used to perform the steps performed by the second access network device in the embodiment shown in FIG. 10 .
  • the communication apparatus 1400 may be used to perform the steps performed by the second access network device in the embodiment shown in FIG. 10 .
  • the aforementioned sending unit 1102 and receiving unit 1101 shown in FIG. 11 may specifically be the transceiver 1403, therefore, the specific implementation of the transceiver 1403 will not be repeated here.
  • the aforementioned processing unit 1103 shown in FIG. 11 may specifically be the processor 1401 , therefore, the specific implementation of the processor 1401 will not be repeated here.
  • the aforementioned sending unit 1301 and receiving unit 1302 shown in FIG. 13 may specifically be the transceiver 1403, therefore, the specific implementation of the transceiver 1403 will not be repeated here.
  • FIG. 15 A possible structural schematic diagram of a terminal device is shown below through FIG. 15 .
  • Fig. 15 shows a schematic structural diagram of a simplified terminal device.
  • the terminal device takes a mobile phone as an example.
  • the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, process data of software programs, and the like.
  • Memory is primarily used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 15 For ease of illustration, only one memory and processor are shown in FIG. 15 .
  • processors In an actual terminal device product, there may be one or more processors and one or more memories.
  • a memory may also be called a storage medium or a storage device.
  • the memory can be set independently of the processor, or integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the terminal device, and the processor with the processing function may be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiver unit 1510 and a processing unit 1520 .
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like.
  • a processing unit may also be called a processor, a processing board, a processing module, a processing device, and the like.
  • the device in the transceiver unit 1510 for realizing the receiving function may be regarded as a receiving unit
  • the device in the transceiver unit 1510 for realizing the sending function may be regarded as a sending unit, that is, the transceiver unit 1510 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes also be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit, etc.
  • the sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • transceiving unit 1510 is used to perform the sending and receiving operations of the terminal device in the above method embodiments
  • processing unit 1520 is used to perform other operations on the terminal device in the above method embodiments except the transceiving operation.
  • the chip When the terminal device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit or a communication interface;
  • the processing unit is a processor or a microprocessor or an integrated circuit or a logic circuit integrated on a chip.
  • the sending operation corresponds to the output of the input-output circuit
  • the receiving operation corresponds to the input of the input-output circuit.
  • the embodiment of the present application also provides a communication system.
  • FIG. 16 is a schematic diagram of a communication system according to an embodiment of the present application.
  • the communication system includes a first access network device and a second access network device.
  • the first access network device is configured to execute all or part of the steps performed by the first access network device in the embodiments shown in FIG. 4A , FIG. 7A and FIG. 10 .
  • the second access network device is configured to perform all or part of the steps performed by the second access network device in the embodiments shown in FIG. 4A , FIG. 7A and FIG. 10 .
  • the embodiment of the present application also provides a computer program product including computer instructions. When it is run on a computer, it causes the computer to execute the above-mentioned steps as shown in FIGS. 2A, 3, 4A, 5B, 6, 7A, 7H, The communication method of the embodiment shown in FIG. 8 , FIG. 9 and FIG. 10 .
  • the embodiment of the present application also provides a computer-readable storage medium, including computer instructions.
  • the computer instructions When the computer instructions are run on the computer, the computer executes the above-mentioned steps as shown in FIGS. 2A, 3, 4A, 5B, 6, and 7A. , the communication method of the embodiment shown in FIG. 7H , FIG. 8 , FIG. 9 and FIG. 10 .
  • the embodiment of the present application also provides a chip device, including a processor, used to call the computer program or computer instruction stored in the memory, so that the processor executes the above-mentioned Fig. 2A, Fig. 3, Fig. 4A, Fig. 5B, Fig. 6, Fig. 7A, FIG. 7H, FIG. 8, FIG. 9 and FIG. 10 show the communication method of the embodiment.
  • the processor is coupled to the memory through an interface.
  • the chip device further includes a memory, and computer programs or computer instructions are stored in the memory.
  • the processor mentioned in any of the above can be a general-purpose central processing unit, a microprocessor, a specific application integrated circuit (application-specific integrated circuit, ASIC), or one or more for controlling the above-mentioned Fig. 2A, Fig. 3 , FIG. 4A, FIG. 5B, FIG. 6, FIG. 7A, FIG. 7H, FIG. 8, FIG. 9 and an integrated circuit for program execution of the communication method of the embodiment shown in FIG. 10.
  • ASIC application-specific integrated circuit
  • the memory mentioned in any of the above can be read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM), etc.
  • read-only memory read-only memory
  • RAM random access memory
  • the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units , which can be located in one place, or can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • the connection relationship between the modules indicates that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • a computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • a computer can be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, computer instructions may be transmitted from a website site, computer, network device, or local computing device, Computing equipment or data center to another website site, computer, network equipment, or local computing equipment, Computing equipment or data center for transmission.
  • the computer-readable storage medium may be any available medium that can be stored by a computer, or a network device integrated with one or more available media, or a data storage device such as a local computing device or a data center.
  • the usable medium may be a magnetic medium (such as a floppy disk, a hard disk, or a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (Solid State Disk, SSD)), etc.
  • the disclosed system, device and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or integrated. to another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • a unit described as a separate component may or may not be physically separated, and a component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the essence of the technical solution of this application or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of software products, and the computer software products are stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods in the various embodiments of the present application.

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Abstract

本申请实施例公开了一种通信方法和通信装置。本申请实施例方法包括:终端设备接收来自第一小区的参考信号,所述参考信号占用的时域资源少于所述第一小区的同步信号块SSB和所述第一小区的系统信息SI占用的时域资源总和;所述终端设备向所述第一小区发送唤醒信号WUS,所述唤醒信号用于唤醒所述第一小区发送所述SSB和/或所述SI。这样终端设备可以快速接入该小区。从而减小终端设备接入小区的时延,提高通信性能。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。第一小区用于广播参考信号的功耗较低。从而节省第一小区的能耗开销。

Description

通信方法和通信装置
本申请要求于2021年5月18日提交中国国家知识产权局,申请号为202110541101.X,发明名称为“通信方法和通信装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域,尤其涉及一种通信方法和通信装置。
背景技术
随着基站功能的日益复杂,基站能耗也不短上升。基站能耗已经成为运营商运营成本居高不下的主要原因之一。如何降低基站能耗成为当前的热点研究课题。
基站能耗主要来源于射频模块,而射频模块中功率放大器的耗能最多。目前,在通信网络中,当小区处于轻载或空载时,将基站的射频模块中的功率放大器关断。那么,基站在该小区不广播任何消息,从而降低基站能耗。例如,基站不广播小区的同步信号块(synchronization signal block,SSB)和小区的系统信息(system information,SI)。
但是,若终端设备需要接入该小区,而基站在该小区不广播任何消息,会导致该终端设备接入该小区的时延过大。
发明内容
本申请实施例提供了一种通信方法和通信装置,用于减小终端设备接入小区的时延,提高通信性能。
本申请实施例第一方面提供一种通信方法,方法包括:
终端设备接收来自第一小区的参考信号;参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和;终端设备向第一小区发送唤醒信号(wake-up signal,WUS),唤醒信号用于唤醒第一小区发送SSB和/或SI。
上述方案中,终端设备通过第一小区的参考信号可以感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区对应的SSB和第一小区对应的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一小区的能耗开销。终端设备通过参考信号感知到第一小区之后,终端设备向第一小区发送唤醒信号,唤醒信号用于唤醒第一小区发送SSB和/或SI。那么第一小区可以及时开启广播SSB和SI,以便于终端设备快速接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
一种可能的实现方式中,方法还包括:终端设备根据参考信号确定第一小区。
在该可能的实现方式中,终端设备可以根据参考信号确定第一小区,以便于终端设备唤醒第一小区以接入第一小区。
另一种可能的实现方式中,参考信号包括以下至少一项信息:第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、唤醒信号的发 送时频资源、唤醒信号所用的伪随机序列的特征参数、或者终端设备发送唤醒信号的条件。
在该可能的实现方式中,提供了参考信号包括的一些信息。例如,终端设备可以参考这些信息确定第一小区;或,终端设备可以参考这些信息确定第一小区的唤醒信号,以及唤醒信号的发送时频资源。这样终端设备可以唤醒第一小区,以便于终端设备接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,终端设备向第一小区发送唤醒信号,包括:
当满足第一条件时,终端设备向第一小区发送唤醒信号;
第一条件包括以下至少一项:终端设备确定驻留或接入第一小区;参考信号的接收功率大于门限值;或者,参考信号为终端设备接收到一个或多个小区分别对应的参考信号中接收功率最大的参考信号。
在该可能的实现方式中,在满足第一条件的情况下,终端设备向第一小区发送唤醒信号。这样可以避免第一小区频繁的接收来自终端设备的唤醒信号,从而提高第一小区的节能效果。在终端设备接收到的参考信号的接收功率较大,和/或,参考信号为终端设备接收到一个或多个小区的参考信号中接收功率最大的参考信号的情况下,终端设备向接入网设备发送唤醒信号。由此可知,终端设备能够接收到的第一小区的信号强度较大。这样后续如果终端设备接入第一小区,第一小区可以为终端设备提供更好的通信质量。
另一种可能的实现方式中,参考信号包括唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数;方法还包括:
终端设备根据唤醒信号所用的伪随机序列的特征参数生成唤醒信号;
终端设备向第一小区发送唤醒信号,包括:
终端设备在发送时频资源上向第一小区发送唤醒信号。
在该可能的实现方式中,提供了终端设备生成唤醒信号以及发送唤醒信号的一种具体的实现方式。使得方案的可实现性更强。这样终端设备可以生成并发送唤醒信号,以唤醒第一小区广播SSB和/或SI。从而实现终端设备快速接入第一小区,提高通信性能。
另一种可能的实现方式中,唤醒信号包括用于唤醒第一小区发送SSB和/或SI的前导码。
在该可能的实现方式中,终端设备通过特定的前导码唤醒接入网设备在第一小区广播SSB和/或SI。当接入网设备接收到特定的前导码,接入网设备可以确定该前导码用于唤醒接入网设备在第一小区广播SSB和/或SI。终端设备无需接入第一小区,终端设备可以快速唤醒接入网设备在第一小区广播SSB和/或SI。即终端设备可以快速向接入网设备传递信息。那么接入网设备可以及时在第一小区广播SSB和/或SI,这样有利于终端设备快速接入第一小区,减小接入时延。
另一种可能的实现方式中,方法还包括:
终端设备接收来自第一小区的SSB和/或SI;
终端设备根据SSB和/或SI在第一小区驻留;或者,终端设备根据SSB和/或SI在第一小区发起随机接入;或者,终端设备根据SSB和/或所述SI在第一小区进行同步。
在该可能的实现方式中,终端设备唤醒第一小区之后,终端设备接收第一小区的SSB 和/或SI。这样终端设备可以驻留或接入该第一小区,或者与该第一小区进行同步等操作。
另一种可能的实现方式中,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和,包括:
参考信号占用的时域符号数少于第一小区的SSB和第一小区的SI占用的时域符号数总和。
在该可能的实现方式中,参考信号占用的时域符号数少于第一小区的SSB和第一小区的SI占用的时域符号数总和。也就是通过符号关断的方式减少接入网设备的功耗。这样第一小区用于广播参考信号的功耗较低,从而节省第一小区的能耗开销。
本申请实施例第二方面提供一种通信方法,方法包括:
终端设备接收来自接入网设备的参考信号,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和;终端设备向接入网设备发送唤醒信号,唤醒信号用于唤醒接入网设备在第一小区发送SSB和/或SI。
上述方案中,终端设备通过第一小区的参考信号可以感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区对应的SSB和第一小区对应的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一小区的能耗开销。终端设备通过参考信号感知到第一小区之后,终端设备向第一小区发送唤醒信号,唤醒信号用于唤醒第一小区发送SSB和/或SI。那么第一小区可以及时开启广播SSB和SI,以便于终端设备快速接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
一种可能的实现方式中,方法还包括:
终端设备根据参考信号确定第一小区。
在该可能的实现方式中,终端设备可以根据参考信号确定第一小区,以便于终端设备唤醒第一小区以接入第一小区。
另一种可能的实现方式中,参考信号包括以下至少一项信息:第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、唤醒信号的发送时频资源、唤醒信号所用的伪随机序列的特征参数、或者终端设备发送唤醒信号的条件。
在该可能的实现方式中,提供了参考信号包括的一些信息。例如,终端设备可以参考这些信息确定第一小区;或,终端设备可以参考这些信息确定第一小区的唤醒信号,以及唤醒信号的发送时频资源。这样终端设备可以唤醒第一小区,以便于终端设备接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,终端设备向接入网设备发送唤醒信号,包括:
当满足第一条件时,终端设备向接入网设备发送唤醒信号;
第一条件包括以下至少一项:终端设备确定驻留或接入第一小区;参考信号的接收功率大于预设门限值;或者,参考信号为终端设备接收到一个或多个小区分别对应的参考信号中接收功率最大的参考信号;或者,所述参考信号包含寻呼指示;所述参考信号包含的系统信息编号发生变化。
在该可能的实现方式中,在满足第一条件的情况下,终端设备向接入网设备发送唤醒 信号。这样可以避免接入网设备频繁的接收来自终端设备的唤醒信号,从而提高接入网设备的节能效果。在终端设备接收到的参考信号的接收功率较大,和/或,参考信号为终端设备接收到一个或多个小区的参考信号中接收功率最大的参考信号的情况下,终端设备向接入网设备发送唤醒信号。由此可知,终端设备能够接收到的第一小区的信号强度较大。这样后续如果终端设备接入第一小区,接入网设备可以为终端设备提供更好的通信质量。
另一种可能的实现方式中,参考信号包括唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数;方法还包括:
终端设备根据唤醒信号所用的伪随机序列的特征参数生成唤醒信号;
终端设备向接入网设备发送唤醒信号,包括:
终端设备在发送时频资源上向接入网设备发送唤醒信号。
在该可能的实现方式中,提供了终端设备生成唤醒信号以及发送唤醒信号的一种具体的实现方式。使得方案的可实现性更强。这样终端设备可以生成并发送唤醒信号,以唤醒第一小区广播SSB和/或SI。从而实现终端设备快速接入第一小区,提高通信性能。
另一种可能的实现方式中,唤醒信号包括用于唤醒第一小区发送SSB和/或SI的前导码。
在该可能的实现方式中,终端设备通过特定的前导码唤醒接入网设备在第一小区广播SSB和/或SI。当接入网设备接收到特定的前导码,接入网设备可以确定该前导码用于唤醒接入网设备在第一小区广播SSB和/或SI。终端设备无需接入第一小区,终端设备可以快速唤醒接入网设备在第一小区广播SSB和/或SI。即终端设备可以快速向接入网设备传递信息。那么接入网设备可以及时在第一小区广播SSB和/或SI,这样有利于终端设备快速接入第一小区,减小接入时延。
另一种可能的实现方式中,方法还包括:
终端设备接收来自接入网设备的SSB和/或SI;
终端设备根据SSB和/或所SI在第一小区驻留;或者,终端设备根据所述SSB和/或SI在第一小区发起随机接入;或者,终端设备根据SSB和/或SI在第一小区进行同步。
在该可能的实现方式中,终端设备唤醒第一小区之后,终端设备接收第一小区的SSB和/或SI。这样终端设备可以驻留或接入该第一小区,或者与该第一小区进行同步等操作。
本申请实施例第三方面提供一种通信方法,方法包括:
接入网设备向终端设备发送参考信号;接入网设备为第一小区所属的接入网设备;参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和;接入网设备接收来自终端设备的唤醒信号,唤醒信号用于唤醒接入网设备在第一小区发送SSB和/或SI。
上述方案中,终端设备通过第一小区的参考信号可以感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区对应的SSB和第一小区对应的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一小区的能耗开销。终端设备通过参考信号感知到第一小区之后,终端设备向第一小区发送唤醒信号,唤醒信号用于唤醒第一小区 发送SSB和/或SI。那么第一小区可以及时开启广播SSB和SI,以便于终端设备快速接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
一种可能的实现方式中,参考信号包括以下至少一项信息:第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、唤醒信号的发送时频资源、唤醒信号所用的伪随机序列的特征参数、或者终端设备发送唤醒信号的条件。
在该可能的实现方式中,提供了参考信号包括的一些信息。例如,终端设备可以参考这些信息确定第一小区;或,终端设备可以参考这些信息确定第一小区的唤醒信号,以及唤醒信号的发送时频资源。这样终端设备可以唤醒第一小区,以便于终端设备接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,方法还包括:
接入网设备向终端设备发送SSB和/或SI。
在该实现方式中,终端设备唤醒第一小区之后,接入网设备可以发送SSB和/或SI。这样终端设备可以根据SSB和/或SI快速接入第一小区,从而提高通信性能。
另一种可能的实现方式中,方法还包括:
接入网设备根据第一信息判断是否开启在第一小区广播SSB和/或SI;
若是,则接入网设备执行接入网设备向终端设备发送SSB和/或SI的步骤;
第一信息包括以下至少一项:第一小区的负载、第一小区的邻居小区的负载、或者参考信号的接收功率。
在该可能的实现方式中,接入网设备可以结合第一小区的负载情况、邻居小区的负载情况和参考信号的接收功率中至少一项信息综合判断是否开启在第一小区广播SSB和/或SI。从而进一步提供通信性能。
另一种可能的实现方式中,参考信号包括唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数;方法还包括:
接入网设备在发送时频资源上接收来自终端设备的唤醒信号;
接入网设备根据唤醒信号所用的伪随机序列的特征参数确定唤醒信号。
在该可能的实现方式中,提供了接入网设备接收唤醒信号和解析唤醒信号的一种实现方式。这样接入网设备可以按照该实现方式接收和解析唤醒信号。以便于接入网设备及时广播第一小区的SSB和/或SI。这样终端设备可以快速接入第一小区,从而提升通信性能。
另一种可能的实现方式中,唤醒信号包括用于唤醒第一小区发送SSB和/或SI的前导码。
在该可能的实现方式中,终端设备通过特定的前导码唤醒接入网设备在第一小区广播SSB和/或SI。当接入网设备接收到特定的前导码,接入网设备可以确定该前导码用于唤醒接入网设备在第一小区广播SSB和/或SI。终端设备无需接入第一小区,终端设备可以快速唤醒接入网设备在第一小区广播SSB和/或SI。即终端设备可以快速向接入网设备传递信息。那么接入网设备可以及时在第一小区广播SSB和/或SI,这样有利于终端设备快速接入第一小区,减小接入时延。
另一种可能的实现方式中,参考信号占用的时域资源少于第一小区的SSB和第一小区 的SI占用的时域资源总和,包括:
参考信号占用的时域符号数少于第一小区的SSB和第一小区的SI占用的时域符号数总和。
在该可能的实现方式中,参考信号占用的时域符号数少于第一小区的SSB和第一小区的SI占用的时域符号数总和。也就是通过符号关断的方式减少接入网设备的功耗。这样第一小区用于广播参考信号的功耗较低,从而节省第一小区的能耗开销。
本申请实施例第四方面提供一种通信方法,方法包括:
终端设备接收来自第一小区的参考信号,参考信号占用的时域资源少于第一小区的SSB和所述第一小区的SI占用的时域资源总和;终端设备向第二小区发送测量结果,测量结果是终端设备测量参考信号得到的测量结果。
上述方案中,终端设备通过第一小区的参考信号感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一小区的能耗开销。终端设备向第二小区发送终端设备测量参考信号得到的测量结果。第二小区获取到测量结果之后,可以结合测量结果指示第一小区开启广播SSB和/或SI。也就是上述技术方案提供了一种触发第二小区指示第一小区开启广播SSB和/或SI的手段。对于待接入第一小区的终端设备来说,通过上述技术方案可以实现第一小区及时开启广播SSB和/或SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
一种可能的实现方式中,方法还包括:
终端设备接收来自第二小区的配置信息,配置信息为参考信号的配置信息;
终端设备向第二小区发送测量结果,包括:
终端设备根据配置信息向第二小区发送所述测量结果。
在该可能的实现方式中,终端设备可以结合第二小区发送的配置信息发送测量结果。从而保证第二小区能够接收到该测量结果。这样第二小区可以及时指示第一小区开启SSB和/或SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,配置信息包括以下至少一项:
参考信号的测量周期、参考信号的频道编号、参考信号的上报接收功率门限值、或用于上报测量结果的物理随机接入信道(physical random access channel,PRACH)时频资源和前导码。
上述实现方式示出配置信息具体包括的内容,为方案的实施提供了基础。例如,终端设备可以根据配置信息确定上报测量结果的上报条件。终端设备根据测量周期测量参考信号,以及用于上报测量结果的时频资资源等。这样有利于第二小区接收测量结果。这样第二小区可以及时指示第一小区开启SSB和/或SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、或参考信号的波束索引。
在该可能的实现方式中,提供了参考信号包括的一些信息。例如,终端设备可以参考这些信息确定第一小区,以便于终端设备接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,终端设备向第二小区发送测量结果,包括:
当满足第一条件时,终端设备向第二小区发送测量结果;
第一条件包括以下至少一项:测量结果中参考信号的接收功率大于第一门限值;或者,第二小区广播的第二小区的SSB、信道状态信息参考信号和解调参考信号中的任一种信号的接收功率小于第二门限值。
在该可能的实现方式中,在满足第一条件的情况下,终端设备向第二小区发送测量结果。从而避免第二小区频繁的接收来自终端设备的测量结果,从而提高第二小区的节能效果。在测量结果中参考信号的接收功率大于第一门限值,和/或,第二小区广播的第二小区的SSB、信道状态信息参考信号和解调参考信号中的任一种信号的接收功率小于第二门限值的情况下,终端设备向第二小区发送测量结果。由此可知,终端设备能够接收到的第一小区的信号强度较大。这样后续如果终端设备接入第一小区,第一小区可以为终端设备提供更好的通信质量。
另一种可能的实现方式中,测量结果包括以下至少一项:第一小区的标识、或参考信号的接收功率。
在该可能的实现方式中,第二小区通过测量结果包括的内容可以确定第一小区以及参考信号的接收功率情况。这样第二小区可以指示第一小区开启广播SSB和/或SI。从而实现终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,若第一小区开启广播第一小区的SSB和/或第一小区的SI,方法还包括:
终端设备接收来自第一小区的SSB和/或SI;
终端设备根据SSB和/或SI驻留在所述第一小区;或者,终端设备根据SSB和/或SI在第一小区发起随机接入;或者,终端设备根据SSB和/或SI在第一小区进行同步。
在该可能的实现方式中,第二小区指示第一小区开启广播SSB和/或SI之后,第一小区广播SSB和/或SI。终端设备可以接收第一小区的SSB和/或SI。这样终端设备可以驻留或接入该第一小区,或者与该第一小区进行同步等操作。
本申请实施例第五方面提供一种通信方法,方法包括:
终端设备接收来自第一接入网设备的参考信号,第一接入网设备为第一小区的接入网设备,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和;终端设备向第二接入网设备发送测量结果,测量结果是终端设备测量参考信号得到的测量结果。
上述方案中,终端设备通过第一小区的参考信号感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区的SSB和第一小区的 SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一接入网设备的能耗开销。终端设备向第二接入网设备发送终端设备测量参考信号得到的测量结果。第二接入网设备获取到测量结果之后,可以结合测量结果指示第一接入网设备开启在第一小区广播第一小区的SSB和/或第一小区的SI。也就是上述技术方案提供了一种触发第二接入网设备指示第一接入网设备开启广播第一小区的SSB和/或第一小区的SI的手段。对于待接入第一小区的终端设备来说,通过上述技术方案可以实现第一接入网设备及时开启广播第一小区的SSB和/或第一小区的SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
一种可能的实现方式中,方法还包括:
终端设备接收来自第二接入网设备的配置信息,配置信息为参考信号的配置信息;
终端设备向第二接入网设备发送测量结果,包括:
终端设备根据配置信息向第二接入网设备发送测量结果。
在该可能的实现方式中,终端设备可以结合第二接入网设备发送的配置信息发送测量结果。从而保证第二接入网设备能够接收到该测量结果。这样第第二接入网设备以及时指示第一接入网设备开启SSB和/或SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,配置信息包括以下至少一项:
参考信号的测量周期、参考信号的频道编号、参考信号的上报接收功率门限值、或用于上报测量结果的PRACH时频资源和前导码。
上述实现方式示出配置信息具体包括的内容,为方案的实施提供了基础。例如,终端设备可以根据配置信息确定上报测量结果的上报条件。终端设备根据测量周期测量参考信号,以及用于上报测量结果的时频资资源等。这样有利于第二小区接收测量结果。这样第二小区可以及时指示第一小区开启SSB和/或SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、或参考信号的波束索引。
在该可能的实现方式中,提供了参考信号包括的一些信息。例如,终端设备可以参考这些信息确定第一小区,以便于终端设备接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,终端设备向第二接入网设备发送测量结果,包括:
当满足第一条件时,终端设备向第二接入网设备发送测量结果;
第一条件包括以下至少一项:测量结果中参考信号的接收功率大于第一门限值;或者,第二接入网设备在第二小区中广播的第二小区对应的同步信号块SSB、信道状态信息参考信号和解调参考信号中的任一种信号的接收功率小于第二门限值。
在该可能的实现方式中,在满足第一条件的情况下,终端设备向第二接入网设备发送测量结果。从而避免第二接入网设备频繁的接收来自终端设备的测量结果,从而提高第二 小区的节能效果。在测量结果中参考信号的接收功率大于第一门限值,和/或,第二小区广播的第二小区的SSB、信道状态信息参考信号和解调参考信号中的任一种信号的接收功率小于第二门限值的情况下,终端设备向第二接入网设备发送测量结果。由此可知,终端设备能够接收到的第一小区的信号强度较大。这样后续如果终端设备接入第一小区,第一小区可以为终端设备提供更好的通信质量。
另一种可能的实现方式中,测量结果包括以下至少一项:第一小区的标识、或参考信号的接收功率。
在该可能的实现方式中,第二接入网设备通过测量结果包括的内容可以确定第一小区以及参考信号的接收功率情况。这样第二接入网设备可以指示第一接入网设备开启广播SSB和/或SI。从而实现终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,若第一接入网设备开启在第一小区广播第一小区的SSB和/或第一小区的SI,方法还包括:
终端设备接收来自第一接入网设备的SSB和/或SI;
终端设备根据SSB和SI驻留在第一小区;或者,终端设备根据SSB和SI在第一小区发起随机接入;或者,终端设备根据SSB和SI在第一小区进行同步。
在该可能的实现方式中,第二接入网设备指示第一接入网设备开启广播SSB和/或SI之后,第一接入网设备在第一小区广播SSB和/或SI。终端设备可以接收第一小区的SSB和/或SI。这样终端设备可以驻留或接入该第一小区,或者与该第一小区进行同步等操作。
本申请实施例第六方面提供一种通信方法,方法包括:
第一接入网设备向终端设备发送参考信号,第一接入网设备为第一小区所属的接入网设备,参考信号占用的时域符号少于第一小区的SSB和第一小区的SI占用的时域资源总和;第一接入网设备接收来自第二接入网设备的指示信息,指示信息用于指示第一接入网设备开启在第一小区广播SSB和/或SI;第一接入网设备根据指示信息在第一小区广播SSB和/或SI。
上述方案中,终端设备通过第一小区的参考信号感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一接入网设备的能耗开销。第一接入网设备接收指示信息,这样第一接入网设备可以及时开启在第一小区广播SSB和/或SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、或参考信号的波束索引。
在该可能的实现方式中,提供了参考信号包括的一些信息。例如,终端设备可以参考这些信息确定第一小区,以便于终端设备接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
本申请实施例第七方面提供一种通信方法,方法包括:
第二接入网设备接收来自终端设备的测量结果;测量结果为终端设备测量第一小区的参考信号得到的测量结果,参考信号占用的时域符号少于第一小区的SSB和第一小区的SI占用的时域资源总和;第二接入网设备向第一接入网设备发送指示信息,第一接入网设备为第一小区所属的接入网设备,指示信息用于指示第一接入网设备开启在第一小区广播SSB和/或SI。
上述方案中,终端设备通过第一小区的参考信号感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一接入网设备的能耗开销。第二接入网设备向第一接入网设备发送指示信息。这样第一接入网设备可以及时开启在第一小区广播SSB和/或SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
一种可能的实现方式中,方法还包括:
第二接入网设备向终端设备发送配置信息,配置信息为参考信号的配置信息,配置信息用于终端设备发送测量结果。
在该可能的实现方式中,第二接入网设备向终端设备发送配置信息。这样终端设备可以结合配置信息发送测量结果。从而保证第二接入网设备能够接收到该测量结果。这样第第二接入网设备以及时指示第一接入网设备开启SSB和/或SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,配置信息包括以下至少一项:
参考信号的测量周期、参考信号的频道编号、参考信号的上报接收功率门限值、或用于上报测量结果的PRACH时频资源和前导码。
上述实现方式示出配置信息具体包括的内容,为方案的实施提供了基础。例如,终端设备可以根据配置信息确定上报测量结果的上报条件。终端设备根据测量周期测量参考信号,以及用于上报测量结果的时频资资源等。这样有利于第二接入网设备接收测量结果。这样第二接入网设备可以及时指示第一接入网设备开启在第一小区SSB和/或SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,测量结果包括以下至少一项:第一小区的标识、或参考信号的接收功率。
在该可能的实现方式中,第二接入网设备通过测量结果包括的内容可以确定第一小区以及参考信号的接收功率情况。这样第二接入网设备可以指示第一接入网设备开启广播SSB和/或SI。从而实现终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、或参考信号的波束索引。
在该可能的实现方式中,提供了参考信号包括的一些信息。例如,终端设备可以参考 这些信息确定第一小区,以便于终端设备接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,方法还包括:
第二接入网设备判断是否指示第一接入网设备开启在第一小区广播SSB和/或SI;
若是,则第二接入网设备执行第二接入网设备向第一接入网设备发送指示信息的步骤。
在该可能的实现方式中,第二接入网设备可以先判断是否指示第一接入网设备开启在第一小区广播SSB和/或SI。从而进一步提升通信性能。例如,第二接入网设备可以结合第一小区的负载情况、第二小区的负载情况以及第一小区的参考信号的接收功率等判断是否指示第一接入网设备开启在第一小区广播SSB和/或SI。从而提高通信性能。
本申请实施例第八方面提供一种通信方法,方法包括:
终端设备接收来自第一小区的参考信号;第一小区为第二小区关联的小区,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源的总和;终端设备接收来自第二小区的接入信息,接入信息包括第一小区的接入信息;终端设备确定候选接入小区,候选接入小区是根据接入信息和参考信号从第一小区中选择的。
上述方案中,终端设备通过第一小区的参考信号感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一小区的能耗开销。终端设备从第二小区获取第一小区的接入信息。这样终端设备可以根据接入信息和第一小区的参考信号选择候选接入小区进行接入。从而实现终端设备快速接入候选接入小区。减少了终端设备接入小区的时延,提高了通信性能。
一种可能的实现方式中,第一小区位于第一载波,第二小区位于第二载波,所第一载波与第二载波不同。
上述实现方式提供了本申请适用的场景。第一小区和第二小区可以为不同载波上的小区。这样终端设备可以只接入或驻留在第二小区,并通过接收第二小区的接入信息从第一小区选择候选接入小区。第一小区无需广播SSB和/或SI,从而节省第一小区的能耗开销。
另一种可能的实现方式中,接入信息包括以下至少一项:
第一小区的标识、第一小区的索引、第一小区的频道编号、第一小区的优先级、参考信号的起始时域位置相对于第二小区的SSB的起始时域位置或结束时域位置的偏移量、第一小区所支持的网络的标识、第一小区的随机接入参数、第一小区的选择参数、或第一小区的重选参数。
在该可能的实现方式中,提供了接入信息具体包括的内容,这样终端设备可以根据接入信息选择和接入候选接入小区。那么第一小区无需广播SSB和/或SI,从而降低第一小区的能耗开销。并且,终端设备根据接入信息可以快速接入候选接入小区,从而减少终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,方法还包括:终端设备向第二小区发送第一请求,第一请求用于请求第二小区发送接入信息。
在该可能的实现方式中,当终端设备需要接入候选接入小区时,那么终端设备可以向第二小区请求第一小区的接入信息。这样可以避免第二小区一直广播第一小区的接入信息,减少第二接入网设备的广播量。从而进一步节省第二小区的能耗开销,提高节能效果。
另一种可能的实现方式中,终端设备向所述第二小区发送第一请求,包括:
终端设备通过前导码或无线资源控制(radio resource control,RRC)系统请求消息向第二小区发送第一请求。
上述实现方式中,提供终端设备发送第一请求的两种承载载体,为方案的实施提供基础。其次,终端设备采用前导码向第二小区发送第一请求,终端设备无需接入第二小区。终端设备可以快速向第二小区传递信息,便于终端设备快速获取第一小区的接入信息。这样有利于终端设备快速选择候选接入小区,并接入候选接入小区。从而减少终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,终端设备向第一小区发送第一请求,包括:
在终端设备检测到第一小区的参考信号中存在接收功率大于或等于门限值的参考信号的情况下,终端设备向第二小区发送第一请求。
在该实现方式中,终端设备在检测到参考信号的接收功率大于门限值时,终端设备向第二小区请求第一小区的接入信息。这样可以避免终端设备频繁地向第二小区请求第一小区的接入信息,从而节省第二小区的能耗开销。并且,参考信号的接收功率大于门限值的情况下,说明终端设备接收到该参考信号对应的小区的信号强度较大。这样后续如果终端设备接入该小区,该小区可以为终端设备提供较好的通信质量。从而提高通信性能。
另一种可能的实现方式中,第一小区为数据分量载波(data component carrier,DCC)小区,第二小区为基础分量载波(basic component carrier,BCC)小区;第一小区为第二小区关联的所有DCC小区;或者,第一小区为第二小区关联的部分DCC小区。
在该可能的实现方式中,第一小区可以是第二小区关联的部分或全部DCC小区。例如,第二小区可以默认广播第二小区关联的所有小区的接入信息。这样方便终端设备根据接入信息从第一小区选择和接入候选接入小区。或者,第二小区可以广播第二小区关联的小区中优先级较高的小区的接入信息。也就是第一小区包括第二小区关联的部分小区。从而减少第二小区的广播量,节省第二小区的广播能耗开销。
另一种可能的实现方式中,方法还包括:
终端设备接收来自第二小区的指示信息,指示信息用于指示第二小区为BCC小区。
上述实现方式中,第二小区可以通过指示信息指示第二小区为BCC小区。这样终端设备可以向第二小区请求第一小区的接入信息。以便于终端设备快速接入候选接入小区。
另一种可能的实现方式中,方法还包括:
若终端设备上有数据待发送,终端设备通过候选接入小区的随机接入资源向候选接入小区发起随机接入。
上述实现方式中,终端设备有数据待发送时,终端设备可以快速接入候选接入小区。从而降低终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,接入信息包括第一小区对应的SI。
上述实现方式中,接入信息可以是第一小区的SI。这样终端设备获取到第一小区的SI之后,终端设备可以确定候选接入小区的SI,并快速接入候选接入小区。从而提高通信性能。
本申请实施例第九方面提供一种通信方法,方法包括:
终端设备接收来自第一接入网设备的参考信号;第一接入网设备为第一小区所属的接入网设备,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源的总和;终端设备接收来自第二接入网设备的接入信息,接入信息包括第一小区的接入信息,第二接入网设备为第二小区所属的接入网设备,第一小区为第二小区关联的小区;终端设备确定候选接入小区,候选接入小区是根据接入信息和参考信号从第一小区中选择的。
上述方案中,终端设备通过第一小区的参考信号感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一接入网设备的能耗开销。终端设备从第二接入网设备获取第一小区的接入信息。这样终端设备可以根据接入信息和第一小区的参考信号选择候选接入小区进行接入。从而实现终端设备快速接入候选接入小区。减少了终端设备接入小区的时延,提高了通信性能。
一种可能的实现方式中,第一小区位于第一载波,第二小区位于第二载波,第一载波和第二载波不同。
上述实现方式提供了本申请适用的场景。第一小区和第二小区可以为不同载波上的小区。这样终端设备可以只接入或驻留在第二小区,并通过接收第二小区的接入信息从第一小区选择候选接入小区。第一小区无需广播SSB和/或SI,从而节省第一小区的能耗开销。
另一种可能的实现方式中,接入信息包括以下至少一项:
第一小区的标识、第一小区的索引、第一小区的频道编号、第一小区的优先级、参考信号的起始时域位置相对于第二小区的SSB的起始时域位置或结束时域位置的偏移量、第一小区所支持的网络的标识、第一小区的随机接入参数、第一小区的选择参数、或第一小区的重选参数。
在该可能的实现方式中,提供了接入信息具体包括的内容,这样终端设备可以根据接入信息选择和接入候选接入小区。那么第一小区无需广播SSB和/或SI,从而降低第一小区的能耗开销。并且,终端设备根据接入信息可以快速接入候选接入小区,从而减少终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,方法还包括:
终端设备向第二接入网设备发送第一请求,第一请求用于请求第二接入网设备发送接入信息。
在该可能的实现方式中,当终端设备需要接入候选接入小区时,那么终端设备可以向第二接入网设备请求第一小区的接入信息。这样可以避免第二接入网设备一直广播第一小区的接入信息,减少第二接入网设备的广播量。从而进一步节省第二接入网设备的能耗开销,提高节能效果。
另一种可能的实现方式中,终端设备向第二接入网设备发送第一请求,包括:
终端设备通过前导码或RRC系统请求消息向第二接入网设备发送第一请求。
上述实现方式中,提供终端设备发送第一请求的两种承载载体,为方案的实施提供基础。其次,终端设备采用前导码向第二接入网设备发送第一请求,终端设备无需接入第二小区。终端设备可以快速向第二小区传递信息,便于终端设备快速获取第一小区的接入信息。这样有利于终端设备快速选择候选接入小区,并接入候选接入小区。从而减少终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,终端设备向第二接入网设备发送第一请求,包括:
在终端设备检测到第一小区的参考信号中存在接收功率大于或等于门限值的情况下,终端设备向第二接入网设备发送第一请求。
在该实现方式中,终端设备在检测到参考信号的接收功率大于门限值时,终端设备向第二接入网设备请求第一小区的接入信息。这样可以避免终端设备频繁地向第二接入网设备请求第一小区的接入信息,从而节省第二接入网设备的能耗开销。并且,参考信号的接收功率大于门限值的情况下,说明终端设备接收到该参考信号对应的小区的信号强度较大。这样后续如果终端设备接入该小区,该小区可以为终端设备提供较好的通信质量。从而提高通信性能。
另一种可能的实现方式中,第一小区为DCC小区,第二小区为BCC小区;第一小区为第二小区关联的所有DCC小区;或者,第一小区为第二小区关联的部分BCC小区。
在该可能的实现方式中,第一小区可以是第二小区关联的部分或全部DCC小区。例如,第二小区可以默认广播第二小区关联的所有小区的接入信息。这样方便终端设备根据接入信息从第一小区选择和接入候选接入小区。或者,第二小区可以广播第二小区关联的小区中优先级较高的小区的接入信息。也就是第一小区包括第二小区关联的部分小区。从而减少第二小区的广播量,节省第二小区的广播能耗开销。
另一种可能的实现方式中,方法还包括:
终端设备接收来自第二接入网设备的指示信息,指示信息用于指示第二小区为BCC小区。
上述实现方式中,第二接入网设备可以通过指示信息指示第二小区为BCC小区。这样终端设备可以向第二接入网设备请求第一小区的接入信息。以便于终端设备快速接入候选接入小区。
另一种可能的实现方式中,方法还包括:
若终端设备上有数据待发送,终端设备通过候选接入小区的随机接入资源向候选接入小区发起随机接入。
上述实现方式中,终端设备有数据待发送时,终端设备可以快速接入候选接入小区。从而降低终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,接入信息包括第一小区的SI。
上述实现方式中,接入信息可以是第一小区的SI。这样终端设备获取到第一小区的SI之后,终端设备可以确定候选接入小区的SI,并快速接入候选接入小区。从而提高通信性 能。
本申请实施例第十方面提供一种通信方法,方法包括:
第二接入网设备向终端设备发送接入信息,接入信息包括第一小区的接入信息,第一小区为第一接入网设备的小区,第一小区为第二小区关联的小区,第二小区为第二接入网设备的小区,第一小区的参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。
上述方案中,第二接入网设备向终端设备发送第一小区的接入信息。这样终端设备可以根据接入信息从第一小区中选择候选接入小区,并接入候选接入小区。从而实现终端设备快速接入候选接入小区。减少了终端设备接入小区的时延,提高了通信性能。
一种可能的实现方式中,第一小区位于第一载波,第二小区位于第二载波,第一载波与第二载波不同。
上述实现方式提供了本申请适用的场景。第一小区和第二小区可以为不同载波上的小区。这样终端设备可以只接入或驻留在第二小区,并通过接收第二小区的接入信息从第一小区选择候选接入小区。第一小区无需广播SSB和/或SI,从而节省第一小区的能耗开销。
另一种可能的实现方式中,接入信息包括第一小区的SI。
上述实现方式中,接入信息可以是第一小区的SI。这样终端设备获取到第一小区的SI之后,终端设备可以确定候选接入小区的SI,并快速接入候选接入小区。从而提高通信性能。
另一种可能的实现方式中,接入信息包括以下至少一项:
第一小区的标识、第一小区的索引、第一小区的频道编号、第一小区的优先级、参考信号的起始时域位置与第二小区的SSB的起始时域位置或结束时域位置的偏移量、第一小区所支持的网络的标识、第一小区的随机接入参数、第一小区的选择参数、或第一小区的重选参数。
在该可能的实现方式中,提供了接入信息具体包括的内容,这样终端设备可以根据接入信息选择和接入候选接入小区。那么第一小区无需广播SSB和/或SI,从而降低第一小区的能耗开销。并且,终端设备根据接入信息可以快速接入候选接入小区,从而减少终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,方法还包括:
第二接入网设备接收来自终端设备的第一请求,第一请求用于请求第二接入网设备发送接入信息。
在该可能的实现方式中,当终端设备需要接入候选接入小区时,那么终端设备可以向第二接入网设备请求第一小区的接入信息。这样可以避免第二接入网设备一直广播第一小区的接入信息,减少第二接入网设备的广播量。从而进一步节省第二接入网设备的能耗开销,提高节能效果。
另一种可能的实现方式中,第二接入网设备接收来自终端设备的第一请求,包括:
第二接入网设备接收来自终端设备的前导码,前导码包括第一请求;或者;
第二接入网设备接收来自终端设备的RRC系统消息,RRC系统消息包括第一请求。
上述实现方式中,提供终端设备发送第一请求的两种承载载体,为方案的实施提供基础。其次,终端设备采用前导码向第二接入网设备发送第一请求,终端设备无需接入第二小区。终端设备可以快速向第二小区传递信息,便于终端设备快速获取第一小区的接入信息。这样有利于终端设备快速选择候选接入小区,并接入候选接入小区。从而减少终端设备接入小区的时延,提高通信性能。
另一种可能的实现方式中,第一小区为DCC小区,所述第二小区为BCC小区;第一小区为第二小区关联的所有DCC小区;或者,第一小区为第二小区关联的部分BCC小区。
在该可能的实现方式中,第一小区可以是第二小区关联的部分或全部DCC小区。例如,第二小区可以默认广播第二小区关联的所有小区的接入信息。这样方便终端设备根据接入信息从第一小区选择和接入候选接入小区。或者,第二小区可以广播第二小区关联的小区中优先级较高的小区的接入信息。也就是第一小区包括第二小区关联的部分小区。从而减少第二小区的广播量,节省第二小区的广播能耗开销。
另一种可能的实现方式中,方法还包括:
第二接入网设备向终端设备发送指示信息,指示信息用于指示第二小区为BCC小区。
上述实现方式中,第二接入网设备可以通过指示信息指示第二小区为BCC小区。这样终端设备可以向第二接入网设备请求第一小区的接入信息。以便于终端设备快速接入候选接入小区。
本申请实施例第十一方面提供一种通信装置,通信装置包括:
接收单元,用于接收来自第一小区的参考信号;参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和;
发送单元,用于向第一小区发送唤醒信号,唤醒信号用于唤醒第一小区发送SSB和/或SI。
一种可能的实现方式中,通信装置还包括处理单元;
处理单元,用于根据参考信号确定第一小区。
另一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、唤醒信号的发送时频资源、唤醒信号所用的伪随机序列的特征参数、或者通信装置发送唤醒信号的条件。
另一种可能的实现方式中,发送单元具体用于:
当满足第一条件时,向第一小区发送唤醒信号;
第一条件包括以下至少一项:通信装置确定驻留或接入第一小区;参考信号的接收功率大于门限值;或者,参考信号为通信装置接收到一个或多个小区分别对应的参考信号中接收功率最大的参考信号。
另一种可能的实现方式中,参考信号包括唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数;处理单元还用于:
根据唤醒信号所用的伪随机序列的特征参数生成唤醒信号;
发送单元具体用于:
在发送时频资源上向第一小区发送唤醒信号。
另一种可能的实现方式中,唤醒信号包括用于唤醒第一小区发送SSB和/或SI的前导码。
另一种可能的实现方式中,发送单元还用于:
接收来自第一小区的SSB和/或SI;
处理单元还用于:
根据SSB和/或SI在第一小区驻留;或者,
根据SSB和/或SI在第一小区发起随机接入;或者,
根据SSB和/或所述SI在第一小区进行同步。
另一种可能的实现方式中,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和,包括:
参考信号占用的时域符号数少于第一小区的SSB和第一小区的SI占用的时域符号数总和。
本申请实施例第十二方面提供一种通信装置,通信装置包括:
接收单元,用于接收来自接入网设备的参考信号,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和;
发送单元,用于向接入网设备发送唤醒信号,唤醒信号用于唤醒接入网设备在第一小区发送SSB和/或SI。
一种可能的实现方式中,通信装置还包括处理单元;
处理单元,用于根据参考信号确定第一小区。
另一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、唤醒信号的发送时频资源、唤醒信号所用的伪随机序列的特征参数、或者通信装置发送唤醒信号的条件。
另一种可能的实现方式中,发送单元具体用于:
当满足第一条件时,向接入网设备发送唤醒信号;
第一条件包括以下至少一项:通信装置确定驻留或接入第一小区;参考信号的接收功率大于预设门限值;或者,参考信号为通信装置接收到一个或多个小区分别对应的参考信号中接收功率最大的参考信号。
另一种可能的实现方式中,参考信号包括唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数;处理单元还用于:
根据唤醒信号所用的伪随机序列的特征参数生成唤醒信号;
发送单元还用于:
在发送时频资源上向接入网设备发送唤醒信号。
另一种可能的实现方式中,唤醒信号包括用于唤醒第一小区发送SSB和/或SI的前导码。
另一种可能的实现方式中,接收单元还用于:
接收来自接入网设备的SSB和/或SI;
处理单元还用于:
根据SSB和/或所SI在第一小区驻留;或者,
根据所述SSB和/或SI在第一小区发起随机接入;或者,
根据SSB和/或SI在第一小区进行同步。
本申请实施例第十三方面提供一种通信装置,通信装置包括:
发送单元,用于向终端设备发送参考信号;通信装置为第一小区所属的接入网设备;参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和;
接收单元,用于接收来自终端设备的唤醒信号,唤醒信号用于唤醒通信装置在第一小区发送SSB和/或SI。
一种可能的实现方式中,参考信号包括以下至少一项信息:第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、唤醒信号的发送时频资源、唤醒信号所用的伪随机序列的特征参数、或者终端设备发送唤醒信号的条件。
另一种可能的实现方式中,发送单元还用于:
向终端设备发送SSB和/或SI。
另一种可能的实现方式中,通信装置还包括处理单元;
处理单元,用于根据第一信息判断是否开启在第一小区广播SSB和/或SI;
若是,则执行通信装置向终端设备发送SSB和/或SI的步骤;
第一信息包括以下至少一项:第一小区的负载、第一小区的邻居小区的负载、或者参考信号的接收功率。
另一种可能的实现方式中,参考信号包括唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数;发送单元还用于:
在发送时频资源上接收来自终端设备的唤醒信号;
处理单元还用于:
根据唤醒信号所用的伪随机序列的特征参数确定唤醒信号。
另一种可能的实现方式中,唤醒信号包括用于唤醒第一小区发送SSB和/或SI的前导码。
另一种可能的实现方式中,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和,包括:
参考信号占用的时域符号数少于第一小区的SSB和第一小区的SI占用的时域符号数总和。
本申请实施例第十四方面提供一种通信装置,通信装置包括:
接收单元,用于接收来自第一小区的参考信号,参考信号占用的时域资源少于第一小区的SSB和所述第一小区的SI占用的时域资源总和;
发送单元,用于向第二小区发送测量结果,测量结果是通信装置测量参考信号得到的测量结果。
一种可能的实现方式中,接收单元还用于:
接收来自第二小区的配置信息,配置信息为参考信号的配置信息;
发送单元还用于:
根据配置信息向第二小区发送所述测量结果。
另一种可能的实现方式中,配置信息包括以下至少一项:
参考信号的测量周期、参考信号的频道编号、参考信号的上报接收功率门限值、或用于上报测量结果的PRACH时频资源和前导码。
另一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、或参考信号的波束索引。
另一种可能的实现方式中,发送单元具体用于:
当满足第一条件时,向第二小区发送测量结果;
第一条件包括以下至少一项:测量结果中参考信号的接收功率大于第一门限值;或者,第二小区广播的第二小区的SSB、信道状态信息参考信号和解调参考信号中的任一种信号的接收功率小于第二门限值。
另一种可能的实现方式中,测量结果包括以下至少一项:第一小区的标识、或参考信号的接收功率。
另一种可能的实现方式中,若第一小区开启广播第一小区的SSB和/或第一小区的SI,接收单元还用于:
接收来自第一小区的SSB和/或SI;
处理单元还用于:
根据SSB和/或SI驻留在所述第一小区;或者,
根据SSB和/或SI在第一小区发起随机接入;或者,
根据SSB和/或SI在第一小区进行同步。
本申请实施例第十五方面提供一种通信装置,通信装置包括:
接收单元,用于接收来自第一接入网设备的参考信号,第一接入网设备为第一小区的接入网设备,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和;
发送单元,用于向第二接入网设备发送测量结果,测量结果是通信装置测量参考信号得到的测量结果。
一种可能的实现方式中,接收单元还用于:
接收来自第二接入网设备的配置信息,配置信息为参考信号的配置信息;
发送单元具体用于:
根据配置信息向第二接入网设备发送测量结果。
另一种可能的实现方式中,配置信息包括以下至少一项:
参考信号的测量周期、参考信号的频道编号、参考信号的上报接收功率门限值、或用于上报测量结果的PRACH时频资源和前导码。
另一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、或参考信号的波束索引。
另一种可能的实现方式中,发送单元具体用于:
当满足第一条件时,向第二接入网设备发送测量结果;
第一条件包括以下至少一项:测量结果中参考信号的接收功率大于第一门限值;或者,第二接入网设备在第二小区中广播的第二小区对应的同步信号块SSB、信道状态信息参考信号和解调参考信号中的任一种信号的接收功率小于第二门限值。
另一种可能的实现方式中,测量结果包括以下至少一项:第一小区的标识、或参考信号的接收功率。
另一种可能的实现方式中,若第一接入网设备开启在第一小区广播第一小区的SSB和/或第一小区的SI,接收单元还用于:
接收来自第一接入网设备的SSB和/或SI;
处理单元还用于:
根据SSB和SI驻留在第一小区;或者,
根据SSB和SI在第一小区发起随机接入;或者,
根据SSB和SI在第一小区进行同步。
本申请实施例第十六方面提供一种通信装置,通信装置包括:
发送单元,用于向终端设备发送参考信号,通信装置为第一小区所属的接入网设备,参考信号占用的时域符号少于第一小区的SSB和第一小区的SI占用的时域资源总和;
接收单元,用于接收来自第二接入网设备的指示信息,指示信息用于指示通信装置开启在第一小区广播SSB和/或SI;
处理单元,用于根据指示信息在第一小区广播SSB和/或SI。
一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、或参考信号的波束索引。
本申请实施例第十七方面提供一种通信装置,通信装置包括:
接收单元,用于接收来自终端设备的测量结果;测量结果为终端设备测量第一小区的参考信号得到的测量结果,参考信号占用的时域符号少于第一小区的SSB和第一小区的SI占用的时域资源总和;
发送单元,用于向第一接入网设备发送指示信息,第一接入网设备为第一小区所属的接入网设备,指示信息用于指示第一接入网设备开启在第一小区广播SSB和/或SI。
一种可能的实现方式中,发送单元还用于:
向终端设备发送配置信息,配置信息为参考信号的配置信息,配置信息用于终端设备发送测量结果。
另一种可能的实现方式中,配置信息包括以下至少一项:
参考信号的测量周期、参考信号的频道编号、参考信号的上报接收功率门限值、或用于上报测量结果的PRACH时频资源和前导码。
另一种可能的实现方式中,测量结果包括以下至少一项:第一小区的标识、或参考信号的接收功率。
另一种可能的实现方式中,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、或参考信号的波束索引。
另一种可能的实现方式中,处理单元还用于:
判断是否指示第一接入网设备开启在第一小区广播SSB和/或SI;
若是,则执行通信装置向第一接入网设备发送指示信息的步骤。
本申请实施例第十八方面提供一种通信装置,通信装置包括:
接收单元,用于接收来自第一小区的参考信号;第一小区为第二小区关联的小区,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源的总和;接收来自第二小区的接入信息,接入信息包括第一小区的接入信息;
处理单元,用于确定候选接入小区,候选接入小区是根据接入信息和参考信号从第一小区中选择的。
一种可能的实现方式中,第一小区位于第一载波,第二小区位于第二载波,所第一载波与第二载波不同。
另一种可能的实现方式中,接入信息包括以下至少一项:
第一小区的标识、第一小区的索引、第一小区的频道编号、第一小区的优先级、参考信号的起始时域位置相对于第二小区的SSB的起始时域位置或结束时域位置的偏移量、第一小区所支持的网络的标识、第一小区的随机接入参数、第一小区的选择参数、或第一小区的重选参数。
另一种可能的实现方式中,通信装置还包括发送单元;
发送单元,用于向第二小区发送第一请求,第一请求用于请求第二小区发送接入信息。
另一种可能的实现方式中,发送单元具体用于:
通过前导码或RRC系统请求消息向第二小区发送第一请求。
另一种可能的实现方式中,发送单元具体用于:
在通信装置检测到第一小区的参考信号中存在接收功率大于或等于门限值的参考信号的情况下,向第二小区发送第一请求。
另一种可能的实现方式中,第一小区为DCC小区,第二小区为BCC小区;第一小区为第二小区关联的所有DCC小区;或者,第一小区为第二小区关联的部分DCC小区。
另一种可能的实现方式中,接收单元还用于:
接收来自第二小区的指示信息,指示信息用于指示第二小区为BCC小区。
另一种可能的实现方式中,处理单元还用于:
若通信装置上有数据待发送,通过候选接入小区的随机接入资源向候选接入小区发起随机接入。
另一种可能的实现方式中,接入信息包括第一小区对应的SI。
本申请实施例第十九方面提供一种通信装置,通信装置包括:
接收单元,用于接收来自第一接入网设备的参考信号;第一接入网设备为第一小区所属的接入网设备,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源的总和;接收来自第二接入网设备的接入信息,接入信息包括第一小区的接入信息,第二接入网设备为第二小区所属的接入网设备,第一小区为第二小区关联的小区;
处理单元,用于确定候选接入小区,候选接入小区是根据接入信息和参考信号从第一小区中选择的。
一种可能的实现方式中,第一小区位于第一载波,第二小区位于第二载波,第一载波和第二载波不同。
另一种可能的实现方式中,接入信息包括以下至少一项:
第一小区的标识、第一小区的索引、第一小区的频道编号、第一小区的优先级、参考信号的起始时域位置相对于第二小区的SSB的起始时域位置或结束时域位置的偏移量、第一小区所支持的网络的标识、第一小区的随机接入参数、第一小区的选择参数、或第一小区的重选参数。
另一种可能的实现方式中,通信装置还包括发送单元;发送单元还用于:
向第二接入网设备发送第一请求,第一请求用于请求第二接入网设备发送接入信息。
另一种可能的实现方式中,发送单元具体用于:
通过前导码或RRC系统请求消息向第二接入网设备发送第一请求。
另一种可能的实现方式中,发送单元具体用于:
在通信装置检测到第一小区的参考信号中存在接收功率大于或等于门限值的情况下,向第二接入网设备发送第一请求。
另一种可能的实现方式中,第一小区为DCC小区,第二小区为BCC小区;第一小区为第二小区关联的所有DCC小区;或者,第一小区为第二小区关联的部分BCC小区。
另一种可能的实现方式中,接收单元还用于:
接收来自第二接入网设备的指示信息,指示信息用于指示第二小区为BCC小区。
另一种可能的实现方式中,处理单元还用于:
若通信装置上有数据待发送,通过候选接入小区的随机接入资源向候选接入小区发起随机接入。
另一种可能的实现方式中,接入信息包括第一小区的SI。
本申请实施例第二十方面提供一种通信装置,通信装置包括:
发送单元,用于向终端设备发送接入信息,接入信息包括第一小区的接入信息,第一小区为第一接入网设备的小区,第一小区为第二小区关联的小区,第二小区为通信装置的小区,第一小区的参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。
一种可能的实现方式中,第一小区位于第一载波,第二小区位于第二载波,第一载波与第二载波不同。
另一种可能的实现方式中,接入信息包括第一小区的SI。
另一种可能的实现方式中,接入信息包括以下至少一项:
第一小区的标识、第一小区的索引、第一小区的频道编号、第一小区的优先级、参考信号的起始时域位置与第二小区的SSB的起始时域位置或结束时域位置的偏移量、第一小区所支持的网络的标识、第一小区的随机接入参数、第一小区的选择参数、或第一小区的重选参数。
另一种可能的实现方式中,通信装置还包括接收单元;
接收单元,用于接收来自终端设备的第一请求,第一请求用于请求通信装置发送接入信息。
另一种可能的实现方式中,接收单元具体用于:
接收来自终端设备的前导码,前导码包括第一请求;或者;
接收来自终端设备的RRC系统消息,RRC系统消息包括第一请求。
另一种可能的实现方式中,第一小区为DCC小区,所述第二小区为BCC小区;第一小区为第二小区关联的所有DCC小区;或者,第一小区为第二小区关联的部分BCC小区。
另一种可能的实现方式中,发送单元还用于:
向终端设备发送指示信息,指示信息用于指示第二小区为BCC小区。
本申请实施例第二十一方面提供一种通信装置,通信装置包括:处理器和存储器。存储器中存储有计算机程序或计算机指令,处理器还用于调用并运行存储器中存储的计算机程序或计算机指令,使得处理器实现如第一方面至第十方面中的任一方面中的任意一种实现方式。
可选的,通信装置包括收发器;处理器用于控制收发器执行如第一方面至第十方面中的任一方面中的任意一种实现方式。
本申请实施例第二十二方面提供一种包括计算机指令的计算机程序产品,其特征在于,当其在计算机上运行时,使得计算机执行如第一方面至第十方面中任一种的实现方式。
本申请实施例第二十三方面提供一种计算机可读存储介质,包括计算机指令,当计算机指令在计算机上运行时,使得计算机执行如第一方面至第十方面任一方面中的任一种实现方式。
本申请实施例第二十四方面提供一种通信装置,通信装置包括网络设备、终端设备或芯片等实体,通信装置包括处理器,用于调用存储器中的计算机程序或计算机指令,以使得处理器执行上述第一方面至第十方面中的任一方面中的任一种实现方式。
可选的,处理器通过接口与存储器耦合。
本申请实施例第二十五方面提供一种通信系统,通信系统包括如第十六方面的通信装置和第十七方面的通信装置。
本申请实施例第二十六方面提供一种芯片,包括处理器,用于与存储器相连,调用该存储器中存储的程序,以使得该处理器执行上述第一方面至第十方面中的任一种实现方式。
从以上技术方案可以看出,本申请实施例具有以下优点:
经由上述技术方案可知,终端设备接收来自第一小区的参考信号。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。终端设备向第一小区发送唤醒信号,唤醒信号用于唤醒第一小区发送SSB和/或SI。由此可知,终端设备可以通 过第一小区的参考信号感知到第一小区、与第一小区同步,以及进行无线资源管理测量。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一小区的能耗开销。终端设备通过参考信号感知到第一小区之后,终端设备向第一小区发送唤醒信号,唤醒信号用于唤醒第一小区发送SSB和/或SI。那么第一小区可以及时开启广播SSB和SI,以便于终端设备快速接入该小区。从而减小终端设备接入小区的时延,提高通信性能。
附图说明
图1A为本申请实施例通信系统的一个示意图;
图1B为本申请实施例通信系统的另一个示意图;
图1C为本申请实施例通信系统的另一个示意图;
图2A为本申请实施例通信方法的一个实施例示意图;
图2B为本申请实施例参考信号的一个广播示意图;
图2C为本申请实施例用于生成参考信号的伪随机序列的一个生成过程示意图;
图2D为本申请实施例参考信号占用的时频资源的一个示意图;
图2E为本申请实施例参考信号占用的时频资源的另一个示意图;
图3为本申请实施例通信方法的另一个实施例示意图;
图4A为本申请实施例通信方法的另一个实施例示意图;
图4B为本申请实施例参考信号的另一个广播示意图;
图4C为本申请实施例通信方法的一个场景示意图;
图5A为本申请实施例通信方法的另一个场景示意图;
图5B为本申请实施例通信方法的另一个实施例示意图;
图6为本申请实施例通信方法的另一个实施例示意图;
图7A为本申请实施例通信方法的另一个实施例示意图;
图7B为本申请实施例通信方法的另一个场景示意图;
图7C为本申请实施例参考信号的另一个广播示意图;
图7D为本申请实施例通信方法的另一个场景示意图;
图7E为本申请实施例用于生成参考信号的伪随机序列的另一个生成过程示意图;
图7F为本申请实施例参考信号的另一个广播示意图;
图7G为本申请实施例参考信号的另一个广播示意图;
图7H为本申请实施例通信方法的另一个实施例示意图;
图8为本申请实施例通信方法的另一个实施例示意图;
图9为本申请实施例通信方法的另一个实施例示意图;
图10为本申请实施例通信方法的另一个实施例示意图;
图11为本申请实施例通信装置的一个结构示意图;
图12为本申请实施例通信装置的另一个结构示意图;
图13为本申请实施例通信装置的另一个结构示意图;
图14为本申请实施例通信装置的另一个结构示意图;
图15为本申请实施例终端设备的一个结构示意图;
图16为本申请实施例通信系统的一个示意图。
具体实施方式
本申请实施例提供了一种通信方法和通信装置,用于减小终端设备接入小区的时延,提高通信性能。
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述。显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
在本说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此,在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例,而是意味着“一个或多个但不是所有的实施例”,除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”,除非是以其他方式另外特别强调。
本申请中,“至少一个”是指一个或者多个,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B的情况,其中A,B可以是单数或者复数。“以下至少一项(个)”或其类似表达,是指的这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,a,b,或c中的至少一项(个),可以表示:a,b,c,a-b,a-c,b-c,或a-b-c,其中a,b,c可以是单个,也可以是多个。
下面介绍本申请所涉及到的技术术语。
1、邻居小区:两个小区之间不存在其他小区时,这两个小区为相邻的小区。其中一个小区可以称为另一小区的邻居小区。邻居小区可以简称邻区。
2、符号:正交频分复用技术(orthogonal frequency division multiplexing,OFDM)符号或单载波频分多址(single-carrier frequency-division multiple access,SC-FDMA)符号。
在本申请实施例中,终端设备(terminal equipment)也可称之为用户设备(user equipment,UE)、移动台(mobile station,MS)、移动终端(mobile terminal)、客户端(station,STA)等,是一种向用户提供语音和/或数据连通性的设备。例如,终端设备可以包括无线连接功能的手持式设备、车载设备等。
终端设备可以经无线接入网(radio access network,RAN)与一个或多个核心网进行通信,目前,终端设备可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机、手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet  device,MID)、可穿戴设备,虚拟现实(virtual reality,VR)设备、增强现实(augmented reality,AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self-driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端,或智慧家庭(smart home)中的无线终端等。终端设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,以及5G通信网络中的终端设备或者未来演进网络中的终端设备等。
在本申请实施例中,接入网设备是为终端设备提供无线通信功能的设备,也可以称为接入设备、(R)AN设备或网络设备等。接入网设备包括但不限于:5G通信系统中的下一代基站(next generation node base station,gNB)、LTE系统中的演进型基站(evolved node B,eNB)、无线网络控制器(radio network controller,RNC)、节点B(node B,NB)、基站控制器(base station controller,BSC)、基站收发台(base transceiver station,BTS)、家庭基站(home evolved nodeB,或home node B,HNB)、基带单元(base band unit,BBU)、传输接收点(transmitting and receiving point,TRP)、发射点(transmitting point,TP)、小基站设备(pico)、移动交换中心,或者未来网络中的网络设备等。本申请对无线接入网设备的具体类型不作限定。采用不同无线接入技术的系统中,具备无线接入网设备功能的设备的名称可能会有所不同。
请参阅图1A,图1A为本申请实施例通信系统的一个示意图。如图1A所示,通信系统包括接入网设备和终端设备。终端设备1和终端设备2处于接入网设备的小区1中。本申请中,接入网设备可以在小区1广播小区1的参考信号。参考信号占用的时域资源少于小区1对应的SSB和小区1对应的SI占用的时域资源的总和。接入网设备处于低功耗的极简广播模块,从而节省接入网设备的能耗开销。而终端设备1和终端设备2可以通过小区1的参考信号感知到小区1。具体通过后文图2A和图4A所示的实施例进行详细介绍。
需要说明的是,上述图1A仅仅是一种示例。在实际应用中,通信系统包括至少一个接入网设备和至少一个终端设备。而接入网设备的小区包括至少一个小区。
请参阅图1B,图1B为本申请实施例通信系统的另一个示意图。如图1B所示,通信系统包括接入网设备和终端设备。小区1和小区2为接入网设备的两个小区。小区2为小区1关联的小区。具体的,小区1位于载波1,小区2位于载波2,载波1和载波2不同。
例如,小区1可以位于低频载波,小区2可以位于高频载波。从信号覆盖范围的角度来说,小区1的信号覆盖范围与小区2的信号覆盖范围有重叠。由上述图1B可知,小区1和小区2为同一接入网设备的两个小区,通常可以称为共站部署小区。
接入网设备可以在小区1广播小区1的SSB和小区1的SI。这里称小区1处于正常广播模式。而接入网设备在小区2广播小区2的参考信号。参考信号占用的时域资源少于小区2的SSB和小区2的SI占用的时域资源总和。也就是小区2处于低功耗的极简广播模块,从而节省接入网设备的能耗开销。并且,终端设备1和终端设备2可以通过小区2的参考信号感知到小区2。具体通过后文图7A、图8和图10所示的实施例进行详细介绍。
需要说明的是,上述图1B仅仅是一种示例。在实际应用中,通信系统包括至少一个接 入网设备和至少一个终端设备。而接入网设备的小区包括至少一个小区1和至少一个小区2。
请参阅图1C,图1C为本申请实施例通信系统的另一个示意图。如图1C,通信系统包括接入网设备和终端设备。小区1为接入网设备1的小区,小区2为接入网设备2的小区。小区2为小区1关联的小区。具体的,小区1位于载波1,小区2位于载波2,载波1和载波2不同。
例如,小区1可以位于低频载波,小区2可以位于高频载波。从信号覆盖范围的角度来说,小区1的信号覆盖范围与小区2的信号覆盖范围有重叠。由上述图1B可知,小区1和小区2为不同非的两个接入网设备的小区,通常可以称为非共站部署小区。
接入网设备1可以在小区1广播小区1的SSB和小区1的SI。也就是小区1处于正常广播模式。而接入网设备2可以在小区2广播小区2的参考信号。参考信号占用的时域资源少于小区2的SSB和小区2的SI占用的时域资源总和。也就是小区2处于低功耗的极简广播模式,从而节省接入网设备2的能耗开销。并且,终端设备1和终端设备2可以通过小区2的参考信号感知到小区2。具体通过后文图7A、图8和图10所示的实施例进行详细介绍。
需要说明的是,上述图1C仅仅是一种示例。在实际应用中,通信系统包括至少一个两个接入网设备和至少一个终端设备。而每个接入网设备的小区包括至少一个小区。
上述图1A至图1C示出了本申请适用的几种可能的场景。对于其他场景本申请仍适用,下述示出的场景并不属于对本申请的限定。
下面结合具体实施例介绍本申请的技术方案。
图2A为本申请实施例通信方法的一个实施例示意图。请参阅图2A,通信方法包括:
201、接入网设备向终端设备发送第一小区的参考信号。相应的,终端设备接收来自接入网设备的第一小区的参考信号。
第一小区为接入网设备的小区。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源的总和。参考信号用于终端设备感知第一小区。
可选的,参考信号占用的时域符号数少于第一小区的SSB和第一小区的SI占用的时域符号数总和。
接入网设备在第一小区不广播SSB和/或SI,而是广播第一小区的参考信号。这里称第一小区处于低功耗的极简广播模式。
例如,如图2B所示,接入网设备在第一小区广播SSB和/或SI的模式称为正常广播模式。接入网设备在第一小区广播第一小区的参考信号的模式称为极简广播模式。如图2B可知,第一小区的SSB和第一小区的SI占用的时域符号数量为4,参考信号占用的时域符号数量为1。由此可知,接入网设备通过符号关断的方式实现节省接入网设备的能耗。相比于正常广播模式来说,极简广播模式可以节省接入网设备的能耗。并且,终端设备通过第一小区的参考信号可以感知到第一小区,有利于终端设备快速接入第一小区。
在一些实施方式中,参考信号可以称为探测参考信号(discovery reference signal,DRS)。DRS仅仅是一种示例,本申请对于参考信号的名称并不做限定。
在一些实施方式中,参考信号可以是以下任一种信号:第一小区的主同步信号(primary synchronization signal,PSS)、第一小区的辅同步信号(secondary synchronization signal,SSS)、第一小区的同步信号块(synchronization signal block,SSB)、或者是新设计的信号。
针对参考信号为新设计的信号的实现方式,可选的,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、唤醒信号的发送时频资源、唤醒信号所用的伪随机序列的特征参数、或者终端设备发送唤醒信号的条件。
下面对参考信号包括的至少一项信息进行介绍。
1、第一小区的标识。例如,第一小区的标识可以是第一小区的物理小区标识(physical cell identifier,PCI),或者是第一小区的小区标识(cell identity)。
具体的,终端设备通过第一小区的标识可以确定终端设备接收到的参考信号对应的小区。
2、参考信号所在的系统帧号是接入网设备发送参考信号所用的系统帧的帧号,即承载参考信号的系统帧的帧号。
3、半帧指示用于指示参考信号位于系统帧的前半帧还是后半帧。半帧指示用于指示参考信号承载于系统帧的前半帧还是后半帧,以方便终端设备从系统帧中解析参考信号。
4、参考信号的索引用于指示接入网设备所发送参考信号的编号。
例如,接入网设备可以在不同的波束上发送参考信号。接入网设备在波束A上发送编号为1的参考信号,在波束B上发送编号为2的参考信号。这样终端设备测量参考信号的功率并向接入网设备上报该参考信号的接收功率。终端设备上报参考信号的接收功率时可以向接入网设备指示所测量的参考信号的编号。这样接入网设备可以确定终端设备是在哪个波束上测量的参考信号。
5、参考信号的波束索引用于指示接入网设备发送参考信号所用波束的编号。
例如,终端设备测量并上报参考信号的功率给接入网设备,终端设备上报参考信号的功率时可以向接入网设备指示所测量的参考信号是在哪个波束上测量的。这样接入网设备可以确定终端设备是在哪个波束上测量的参考信号。
6、唤醒信号的发送时频资源。
其中,唤醒信号的发送时频资源可以通过多种方式指示,下面示出几种可能的实现方式。
a、唤醒信号的发送时频资源包括唤醒信号的发送时频位置。
那么,在下述步骤202中,终端设备可以确定用于发送唤醒信号的时频位置。
b、唤醒信号的发送时频资源通过索引值指示。
唤醒信号的发送时频资源为第一索引值对应的时频资源。
例如,第一索引值的取值范围为1至64。例如,第一索引值为1时对应的时频资源为:在时域上为参考信号占用的时域符号之后的第2个时域符号至第4个时域符号,频域上与参考信号占用的资源块相同;第一索引值为2时对应的时频资源为:在时域上为参考信号 占用的时域符号之后的第3个时域符号至第5个时域符号。其他第一索引值的取值对应的时域资源类似,这里不一一举例说明。
需要说明的是,第一索引值对应的时频资源可以是通信标准协议规定的,或者是预定义的、或者是配置的,具体本申请不做限定。
7、唤醒信号所用的伪随机序列的特征参数。
其中,唤醒信号所用的伪随机序列的特征参数可以通过多种方式指示。下面示出几种可能的实现方式。
a、唤醒信号所用的伪随机序列的特征参数包括伪随机序列的特征参数。
例如,特征参数包括伪随机序列的根序列索引。根序列索引用于终端设备生成唤醒信号。
b、唤醒信号所用的伪随机序列的特征参数通过第二索引值指示。
每个第二索引值有对应的特征参数。
需要说明的是,第二索引值对应的特征参数可以是通信标准协议规定的,或者是预定义的、或者是配置的,具体本申请不做限定。
8、终端设备发送唤醒信号的条件。
可选的,终端设备发送唤醒信号的条件包括:终端设备检测到参考信号的接收功率大于第一门限值。第一门限值可以是接入网设备为终端设备配置的,或者是预设的,具体本申请不做限定。
上述终端设备检测到参考信号的接收功率大于第一门限值的情况下,终端设备向接入网设备发送唤醒信号。由于终端设备能够接收到的第一小区的信号强度较大,那么后续若终端设备接入第一小区,第一小区可以为终端设备提供较好的通信质量。因此,在上述情况下终端设备唤醒接入网络设备在第一小区广播SSB/或SI的技术方案更为实用。
需要说明的是,可选的,唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数也可以是通信标准协议规定的,或者是预定义的。即接入网设备可以不广播唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数。
例如,唤醒信号为前导码。前导码的发送时频资源和前导码所用的伪随机序列都是通信协议定义的,或者是预定义的。终端设备可以通过特定的前导码唤醒接入网设备在第一小区广播SSB和/或SI。
上述步骤201中,参考信号可以是根据伪随机序列生成的。例如,伪随机序列可以为m序列、Gold序列、或ZC序列等,具体本申请不做限定。
上述示出了参考信号包括的至少一项信息。接入网设备可以采用伪随机序列表征上述信息。例如,接入网设备可以根据上述至少一项信息配置伪随机序列的生成初始值或移位值,再产生相应的伪随机序列。然后,接入网设备根据伪随机序列生成参考信号。
例如,用于生成参考信号的伪随机序列采用127位的Gold序列。Gold序列由两个m序列模2相加生成,具体生成过程如图2C所示。其中,c(n)为生成参考信号的伪随机序列。第一个m序列的初始值为0000000000000000000000000000001。第二个m序列的初始值的第0位至第9位用于表示第一小区的标识,第11位至第15位用于表示参考信号的索 引,第19位至第28位用于表示系统帧号,其余位不限定。接入网设备通过图2C所示的生成过程得到伪随机序列c(n)。接入网设备对c(n)进行傅里叶变换处理或傅里叶反变换处理,从而生成第一小区的参考信号。
那么可知,参考信号包括第一小区的标识、参考信号的索引和系统帧号。终端设备接收到参考信号之后,可以推导得到第一小区的标识、参考信号的索引和系统帧号。
可选的,参考信号包括至少一个子信号。
其中,至少一个子信号占用的时域资源之和少于第一小区的SSB和第一小区的SI占用的时域资源总和。每个子信号可以通过伪随机序列生成。伪随机序列的相关介绍请参阅前文相关介绍。
一种可能的实现方式中,至少一个子信号占用的时域符号数之和少于第一小区的SSB和第一小区的SI占用的时域符号数总和。
例如,至少一个子信道占用的时域符号数为1个时域符号或者3个时域符号。
可选的,至少一个子信号包括至少一项信息:第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、唤醒信号的发送时频资源、唤醒信号所用的伪随机序列的特征参数、或者终端设备发送唤醒信号的条件。每个子信号包括上述信息中的一项或多项信息。
例如,参考信号包括三个子信号,分别为DRS-a、DRS-b和DRS-c。其中,DRS-a包括第一小区的标识。DRS-b包括参考信号所在的系统帧号和半帧指示。DRS-c包括唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数。
一种可能的实现方式中,至少一个子信号占用的时频资源中,在同一时域符号上不同子信号占用的频域资源满足频分复用关系。
例如,如图2D所示,参考信号包括三个子信号,分别为DRS-a、DRS-b和DRS-c。DRS-a、DRS-b和DRS-c分别都占用同一时域符号,即时域符号2。在时域符号2上,DRS-a占用的频域资源为资源块10至资源块12。在时域符号2上,DRS-b占用的频域资源为资源块5至资源8。在时域符号2上,DRS-c占用的频域资源为资源块1至资源块3。由此可知,在时域符号2上,DRS-a、DRS-b和DRS-c分别占用的频域资源满足频分复用关系。
另一种可能的实现方式中,至少一个子信道占用的时频资源中,在同一频域位置上不同子信号占用的时域资源满足时分复用关系。
例如,如图2E所示,参考信号包括三个子信号,分别为DRS-a、DRS-b和DRS-c。在频域上,DRS-a占用资源块1至资源块3。在频域上,DRS-b占用资源块1至资源块4。在频域上,DRS-c占用资源块1至资源块3。在资源块1上,DRS-a、DRS-b和DRS-c分别占用时域符号1、时域符号2和时域符号3。那么可知,在资源块1上,DRS-a、DRS-b和DRS-c分别占用的时域资源满足时分复用关系。在资源块2上,DRS-a、DRS-b和DRS-c分别占用时域符号1、时域符号2和时域符号3。那么可知,在资源块2上,DRS-a、DRS-b和DRS-c分别占用的时域资源满足时分复用关系。在资源块3上,DRS-a、DRS-b和DRS-c分别占用时域符号1、时域符号2和时域符号3。那么可知,在资源块3上,DRS-a、DRS-b和DRS-c分别占用的时域资源满足时分复用关系。
202、终端设备向接入网设备发送唤醒信号。相应的,接入网设备接收来自终端设备的唤醒信号。
其中,唤醒信号用于唤醒接入网设备在第一小区发送SSB和/或SI。
例如,终端设备可以接收来自接入网设备的第一小区的参考信号。然后,终端设备向接入网设备发送唤醒信号。唤醒信号用于唤醒接入网设备在第一小区广播SSB和/或SI。
在一些实施方式中,终端设备接收到上述步骤201的参考信号之后,终端设备可以确定第一小区。可选的,上述图2A所示的实施例还包括步骤202a。步骤202a可以在步骤202之前执行。
202a、终端设备根据参考信号确定第一小区。
上述步骤202a中,终端设备确定第一小区的方式有多种,下面示出几种可能的实现方式。对于其他实现方式本申请仍适用,下述示例并不属于对本申请的限定。
实现方式1:参考信号包括第一小区的标识。上述步骤202a具体包括:终端设备根据第一小区的标识确定第一小区。
实现方式2:上述步骤202a具体包括:终端设备根据参考信号的格式确定第一小区。
其中,接入网设备的每个小区的参考信号都有对应的格式。不同小区的参考信号的格式不同。终端设备获取不同小区的参考信号的格式。终端设备根据参考信号的格式确定第一小区。
可选的,参考信号的格式为参考信号所用的伪随机序列。不同小区的参考信号适用不同的伪随机序列。
需要说明的是,终端设备可以从接入网设备获取接入网设备的每个小区的参考信号的格式;或者是其他设备在终端设备上预配置接入网设备的每个小区的参考信号的格式。
一种可能的实现方式中,上述步骤201具体包括:当满足第一条件时,终端设备向接入网设备发送唤醒信号。
其中,第一条件包括以下至少一项:
终端设备确定驻留或接入第一小区;参考信号的接收功率大于第二门限值;或者,参考信号为终端设备接收到一个或多个小区的参考信号中接收功率最大的参考信号。
第二门限值可以是接入网设备为终端设备配置的,或者是通信协议定义的,或者是预设的,具体本申请不做限定。
上述实现方式中,在满足第一条件的情况下,终端设备向接入网设备发送唤醒信号。这样可以避免接入网设备频繁的接收来自终端设备的唤醒信号,从而提高接入网设备的节能效果。在终端设备接收到的参考信号的接收功率较大,和/或,参考信号为终端设备接收到一个或多个小区的参考信号中接收功率最大的参考信号的情况下,终端设备向接入网设备发送唤醒信号。由此可知,终端设备能够接收到的第一小区的信号强度较大。这样后续如果终端设备接入第一小区,接入网设备可以为终端设备提供更好的通信质量。
可选的,上述图2A所示的实施例还包括步骤202b。步骤202b可以在步骤202之前执行。
202b、终端设备根据伪随机序列的特征参数生成唤醒信号。
例如,唤醒信号采用ZC序列。伪随机序列的特征参数包括根序列索引u。那么终端设备根据根序列索引u生成ZC序列。终端设备将ZC序列中的每一位依次放置在相应的子载波上,并进行傅里叶变换处理,得到唤醒信号。
上述步骤202具体包括:终端设备在唤醒信号的发送时频资源上向接入网设备发送唤醒信号。相应的,接入网设备在发送时频资源上接收来自终端设备的唤醒信号。
其中,唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数可以是接入网设备通过参考信号向终端设备发送的,也可以是通信标准协议规定的,具体本申请不做限定。
在一些实施方式中,唤醒信号的发送时频资源和唤醒信号所用的伪随机序列的特征参数是通信标准协议规定的。唤醒信号包括用于唤醒接入网设备在第一小区发送SSB和/或SI的前导码。
在该实现方式中,前导码的发送时频资源和前导码所用的伪随机序列都是通信协议定义的,或者是预定义的。终端设备通过特定的前导码唤醒接入网设备在第一小区广播SSB和/或SI。当接入网设备接收到特定的前导码,接入网设备可以确定该前导码用于唤醒接入网设备在第一小区广播SSB和/或SI。终端设备无需接入第一小区,终端设备可以快速唤醒接入网设备在第一小区广播SSB和/或SI。即终端设备可以快速向接入网设备传递信息。那么接入网设备可以及时在第一小区广播SSB和/或SI,这样有利于终端设备快速接入第一小区,减小接入时延。
可选的,上述图2A所示的实施例还包括步骤203和步骤204。步骤203和步骤204可以在步骤202之后执行。
203、接入网设备向终端设备发送第一小区的SSB和/或和第一小区的SI。相应的,终端设备接收来自接入网设备的第一小区的SSB和/或第一小区的SI。
接入网设备接收到唤醒信号之后,接入网设备在第一小区广播第一小区SSB和/或第一小区SI。
可选的,上述图2A所示的实施例还包括步骤203a。步骤203a在步骤202之后执行,在步骤203之前执行。
203a、接入网设备判断是否在第一小区广播第一小区的SSB和/或第一小区的SI,若是,则执行步骤203;若否,则接入网设备执行其他操作。
一种可能的实现方式中,接入网设备根据第一信息判断是否在第一小区广播第一小区的SSB和/或第一小区的SI。若是,则执行步骤203;若否,则接入网设备执行其他操作。
其中,第一信息包括以下至少一项:第一小区的负载、第一小区的邻居小区的负载、或接入网设备接收到的唤醒信号的接收功率。
例如,若第一小区的负载较小、邻居小区的负载较大和唤醒信号的接收功率较大,则接入网设备可以在第一小区广播第一小区的SSB和/或第一小区的SI。
例如,若第一小区的负载较大以及邻居小区的负载较小,那么接入网设备可以不开启在第一小区广播第一小区的SSB和/或第一小区的SI。
需要说明的是,可选的,接入网设备执行其他操作包括:接入网设备保持原有状态, 即接入网设备在第一小区不广播第一小区的SSB和/或第一小区的SI。
204、终端设备根据第一小区的SSB和/或第一小区的SI在第一小区驻留;或者,终端设备根据第一小区的SSB和/或第一小区的SI在第一小区进行同步;或者,终端设备根据第一小区的SSB和/或第一小区的SI向第一小区发起随机接入。
例如,第一小区的SI包括第一小区所属的网络。终端设备根据第一小区的SI判断是否可以驻留在第一小区。若终端设备签约了第一小区所属的网络,那么终端设备可以在第一小区驻留。
需要说明的是,若终端设备没有签约第一小区所属的网络,那么终端设备不能在第一小区驻留。
例如,第一小区的SI包括随机接入时频资源和前导码。终端设备在该随机接入时频资源上向接入网设备发送前导码,以请求接入第一小区。
本申请实施例中,终端设备接收来自接入网设备的第一小区的参考信号。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。终端设备向接入网设备发送唤醒信号,唤醒信号用于唤醒接入网设备在第一小区发送第一小区的SSB和/或第一小区的SI。由此可知,终端设备通过第一小区的参考信号感知到第一小区。并且,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样接入网设备用于广播参考信号的功耗较低,即第一小区处于低功耗的极简广播模式。终端设备通过参考信号感知到第一小区,终端设备可以向接入网设备发送唤醒信号。这样接入网设备可以及时开启在第一小区广播第一小区的SSB和第一小区的SI。这样终端设备可以快速接入第一小区。从而减小终端设备接入小区的时延,提高通信性能。
上述图2A所示的实施例中,接入网设备可以替换为第一小区。也就是由第一小区作为执行主体介绍本申请的技术方案。下面通过图3所示的实施例介绍上述图2A所示的技术方案的另外一种描述方式。
图3为本申请实施例通信方法的另一个实施例示意图。请参阅图3,通信方法包括:
301、终端设备接收来自第一小区的参考信号。
关于参考信号的相关介绍请参阅前述图2A所示的实施例中的相关介绍,这里不再赘述。
302、终端设备向第一小区发送唤醒信号。
其中,唤醒信号用于唤醒第一小区发送SSB和/或SI。关于唤醒信号的相关介绍请参阅前述图2A所示的实施例中步骤202的相关介绍,这里不再赘述。
在一些实施方式中,唤醒信号包括用于唤醒第一小区发送SSB和/或SI的前导码。
具体的,终端设备无需接入小区,终端设备通过特定的前导码可以快速唤醒第一小区广播SSB和/或SI。当第一小区接收到来自终端设备的特定的前导码,第一小区可以确定该前导码用于唤醒第一小区广播SSB和/或SI。那么第一小区可以及时开启广播SSB和/或SI,以便于终端设备快速接入第一小区。
关于前导码的相关说明请参阅前述图2A所示的实施例中的步骤202的相关说明,这里不再赘述。
可选的,上述图3所示的实施例还包括步骤302a。步骤302a可以在步骤302之前执 行。
302a、终端设备根据参考信号确定第一小区。
步骤302a与前述图2A所示的步骤202a类似,具体请参阅前述图2A所示的实施例中的相关介绍,这里不再赘述。
一种可能的实现方式中,上述步骤301具体包括:当满足第一条件时,终端设备向第一小区发送唤醒信号。关于第一条件的相关介绍请参阅前述图2A所示的实施例的相关介绍,这里不再赘述。
可选的,上述图3所示的实施例还包括步骤302b。步骤302b可以在步骤302之前执行。
302b、终端设备根据伪随机序列的特征参数生成唤醒信号。
步骤302b与前述图2A所示的实施例中的步骤202b类似,具体请参阅前述图2A所示的实施例中的步骤202b的相关介绍,这里不再赘述。
那么上述步骤302具体包括:终端设备在唤醒信号的发送时频资源上向第一小区发送唤醒信号。相应的,第一小区在唤醒信号的发送时频资源上接收来自终端设备的唤醒信号。
可选的,上述图3所示的实施例还包括步骤303和步骤304。步骤303和步骤304可以在步骤302之后执行。
303、第一小区向终端设备发送SSB和/或SI,相应的,终端设备接收来自第一小区的SSB和/或SI。
可选的,上述图3所示的实施例还包括步骤303a,步骤303a可以在步骤302之后执行,在步骤303之前执行。
303a、第一小区判断是否广播SSB和/或SI,若是,则执行步骤304;若否,则第一小区执行其他操作。
关于步骤303a的相关介绍与前述图2A所示的实施例中的步骤203a类似,具体可以参阅前述的相关介绍,这里不再赘述。
304、终端设备根据第一小区的SSB和/或第一小区的SI在第一小区驻留;或者,终端设备根据第一小区的SSB和/或第一小区的SI在第一小区进行同步;或者,终端设备根据第一小区的SSB和/或第一小区的SI向第一小区发起随机接入。
步骤304与前述图2A所示的实施例中步骤204类似,具体请参阅前述图2A所示的实施例中步骤204的相关介绍,这里不再赘述。
本申请实施例中,终端设备接收来自第一小区的参考信号。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。终端设备向第一小区发送唤醒信号,唤醒信号用于唤醒第一小区发送SSB和/或SI。由此可知,终端设备通过第一小区的参考信号感知到第一小区。并且,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。终端设备通过参考信号感知到第一小区,终端设备可以向第一小区发送唤醒信号。那么第一小区可以及时开启广播SSB和SI,以便于终端设备可以快速接入该小区。从而减小终端设备接入小区的时延,提高通信性能。
图4A为本申请实施例通信方法的另一个实施例示意图。请参阅图4A,通信方法包括:
401、第一接入网设备向终端设备发送第一小区的参考信号。相应的,终端设备接收来自第一接入网设备的第一小区的参考信号。
第一小区为第一接入网设备的小区。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。参考信号用于终端设备感知第一小区。
例如,如图4B所示,第一接入网设备在第一小区不广播SSB和/或SI,而是广播第一小区的参考信号。第一接入网设备在第一小区广播第一小区的参考信号的模式称为极简广播模式。由图4B可知,参考信号占用的时域符号数量为1,第一小区的SSB1和第一小区的SI1占用的时域符号数量为4。由此可知,第一接入网设备通过符号关断的方式节省第一接入网设备的能耗开销。并且,终端设备通过第一小区的参考信号可以感知到第一小区。这样有利于终端设备快速接入第一小区。
可选的,参考信号占用的时域符号数少于第一小区的SSB和第一小区的SI占用的时域符号数总和。
在一些实施方式中,参考信号可以称为DRS。DRS仅仅是一种示例,本申请对于参考信号的名称并不做限定。
在一些实施方式中,参考信号可以为第一小区的PSS,或者为第一小区的SSS,或者为第一小区的SSB,或者为新设计的信号。
针对参考信号为新设计的信号的实现方式,可选的,参考信号包括以下至少一项信息:
第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引、或参考信号的波束索引。
关于第一小区的标识、参考信号所在的系统帧号、半帧指示、参考信号的索引和参考信号的波束索引的相关介绍请参阅前述图2A所示的实施例中的相关介绍,这里不再赘述。
具体的,上述步骤401中,参考信号可以是根据伪随机序列生成的。例如,伪随机序列可以为m序列、Gold序列、或ZC序列等,具体本申请不做限定。
具体的,参考信号包括上述示出的至少一项信息。第一接入网设备可以采用伪随机序列表征上述信息。例如,第一接入网设备可以根据上述信息配置伪随机序列的生成初始值或移位值,再产生相应的伪随机序列。具体相关的生成过程示例请参阅前述图2C的相关介绍,这里不再赘述。
可选的,第一小区的参考信号包括至少一个子信号。关于至少一个子信号可以参阅前述图2A所示的实施例中的相关介绍,这里不再赘述。关于至少一个子信号还可以进一步结合前述图2D和图2E所示的示例进行理解,这里不再赘述。
402、终端设备向第二接入网设备发送测量结果。相应的,第二接入网设备接收来自终端设备的测量结果。
其中,第二接入网设备为第二小区所属的接入网设备。测量结果是终端设备测量参考信号得到的测量结果。
一种可能的实现方式中,终端设备驻留或接入第二小区。第二小区为第一小区的邻居小区。
例如,如图4B和图4C所示,第二接入网设备在第二小区广播第二小区的SSB2和/或第二小区的SI2。第二接入网设备在第二小区广播SSB2和/或SI2的模式可以称为正常广播模式。终端设备驻留在第二小区,第二小区可以是第一小区的邻居小区。
具体的,终端设备接收到第一小区的参考信号之后,终端设备测量参考信号,得到测量结果。然后,终端设备向第二接入网设备发送测量结果。可选的,上述图4A所示的实施例还包括步骤402a。步骤402a可以在步骤402之前执行。
402a、终端设备测量参考信号,得到测量结果。
例如,终端设备可以根据参考信号包括的第一小区的标识确定第一小区。终端设备测量接收到的参考信号,得到测量结果。
可选的,测量结果包括以下至少一项:第一小区的标识、或参考信号的接收功率。
一种可能的实现方式中,上述步骤401具体包括:当满足第一条件时,终端设备向第二接入网设备发送测量结果。
其中,第一条件包括以下至少一项:测量结果中参考信号的接收功率大于或等于第一门限值;或者,第一信号的接收功率或接收质量小于或等于第二门限值;
其中,第一信号包括以下任一种:第二小区的SSB、第二小区的信道状态信息参考信号(channel state information reference signal,CSI-RS)、或第二小区的解调参考信号(demodulation reference signal,DMRS)。
第一门限值和第二门限值可以是预设的,或者是通信协议规定的,或者是接入网设备为终端设备配置的,具体本申请不做限定。
对于参考信号的接收功率大于第一门限值的情况,说明终端设备接收到的第一小区的参考信号的信号强度较大。如果终端设备接入第一小区,第一小区可以为终端设备提供更好的通信质量。因此终端设备可以向第二接入网设备发送测量结果。这样第二接入网设备可以参考测量结果指示第一接入网设备开启在第一小区广播SSB和/或SI。方便终端设备接入第一小区。
对于第一信号的接收功率较小或第一信号的接收质量较差的情况,说明终端设备接收到的第二小区的信号的强度较弱。终端设备可以重新选择小区接入。终端设备可以测量第一小区的参考信号,并向第二接入网设备发送测量结果。这样第二接入网设备可以参考测量结果指示第一接入网设备开启在第一小区广播SSB和/或SI。有利于终端设备快速接入第一小区。
可选的,上述图4A所示的实施例还包括步骤402b,步骤402b可以在步骤402之前执行。
402b、第二接入网设备向终端设备发送配置信息。相应的,终端设备接收来自第二接入网设备的配置信息。
其中,配置信息为参考信号的配置信息。
可选的,配置信息包括以下至少一项:参考信号的测量周期、参考信号的频道编号、参考信号的上报接收功率门限值、或用于上报测量结果的PRACH时频资源和前导码。
下面对配置信息包括的上述至少一项信息进行介绍。
1、参考信号的测量周期;
测量周期可以指终端设备多长时间做一次参考信号测量。测量周期通常远大于参考信号的发送周期。
例如,参考信号的发送周期可以为5ms,测量周期为100s。
2、参考信号的频道编号;
例如,第一接入网设备在频道1上发送参考信号,那么参考信号的频道编号为1。终端设备可以根据该频道编号确定频道1,并在该频道1上监听参考信号。
3、参考信号的上报接收功率门限值;
上报接收功率门限值用于指示终端设备上报测量结果对应的参考信号的接收功率门限值。
例如,参考信号的上报接收功率门限值为A,终端设备测量参考信号,得到参考信号的接收功率。该参考信号的接收功率大小为B。如果B小于A,那么终端设备不上报测量结果。如果B大于或等于A,那么终端设备可以向第二接入网设备上报测量结果。
4.用于上报测量结果的PRACH时频资源和前导码;
具体的,终端设备可以在PRACH时频资源上向第二接入网设备发送前导码,前导码包括测量结果。可选的,终端设备可以使用用于生成前导码的伪随机序列表征测量结果,再根据该伪随机序列生成前导码。例如,终端设备可以将测量结果配置为伪随机序列的初始值或移位值表征测量结果,再产生相应的伪随机序列。
可选的,基于步骤402b,上述步骤402具体包括:终端设备根据配置信息向第二接入网设备发送测量结果。
例如,配置信息包括用于上报测量结果的PRACH时频资源和前导码。终端设备根据配置信息确定PRACH时频资源。终端设备在PRACH时频资源上向第二接入网设备发送前导码,该前导码包括测量结果。关于前导码包括测量结果的具体实现方式请参阅前述相关介绍。相应的,第二接入网设备在PRACH时频资源上接收来自终端设备的测量结果。
一种可能的实现方式,配置信息包括参考信号的测量配置信息和参考信号的上报配置系信息。
例如,测量配置信息包括以下至少一项:参考信号的测量周期、或参考信号的频道编号。上报配置信息包括以下至少一项:参考信号的上报接收功率门限值、或用于上报测量结果的PRACH时频资源和前导码。
那么基于该实现方式,可选的,上述步骤402a具体包括:终端设备根据测量配置信息测量参考信号,得到测量结果。
例如,测量配置信息包括参考信号的测量周期和参考信号的频道编号。终端设备根据频道编号确定频道,并在频道上监听第一小区的参考信号。然后,终端设备按照测量周期测量参考信号,得到测量结果。
第二接入网设备向终端设备提供测量周期和频道编号。这样终端设备可以在该频道编号对应的频道上监听信号。终端设备无需在所有频道上监听信号。从而节省终端设备的能耗开销。第一接入网设备周期性发送参考信号,终端设备按照测量周期测量参考信号。终 端设备按照测量周期在对应的时间点上接收第一小区的参考信号即可。无需实时在频道上监听参考信号,进一步节省终端设备的能耗开销。
基于上述实现方式,可选的,上述步骤402具体包括:终端设备根据上报配置信息向第二接入网设备发送测量结果。终端设备的发送过程具体的相关介绍请参阅前文相关介绍,这里不再赘述。
403、第二接入网设备向第一接入网设备发送指示信息。相应的,第一接入网设备接收来自第二接入网设备的指示信息。
其中,指示信息用于指示第一接入网设备开启在第一小区广播SSB和/或SI。
具体的,第二接入网设备接收到来自终端设备的测量结果之后,第二接入网设备指示第一接入网设备开启在第一小区广播SSB和/或SI。
可选的,上述图4A所示的实施例还包括步骤403a。步骤403a可以在步骤402之后、在步骤403之前执行。
403a、第二接入网设备判断是否指示第一接入网设备开启在第一小区广播第一小区的SSB和/或第一小区的SI,若是,则执行步骤404;若否,则第二接入网设备执行其他操作。
一种可能的实现方式中,第二接入网设备根据第二信息判断是否指示第一接入网设备开启广播第一小区的SSB和/或第一小区的SI。若是,则执行步骤404;若否,则第二接入网设备执行其他操作。
第二信息包括以下至少一项:第一小区的负载、第二小区的负载、或测量结果中参考信号的接收功率。
一种可能的实现方式中,第一小区的负载可以指第一小区在一段时间内接收到的唤醒信号的数量。
例如,若第一小区的负载较小,第二小区的负载较大以及参考信号的接收功率较大,则第二接入网设备可以指示第一接入网设备开启在第一小区广播SSB和/或SI。
例如,若第一小区的负载较大,第二小区的负载较小以及参考信号的接收功率较小,则第二接入网设备可以不指示第一接入网设备开启在第一小区广播SSB和/或SI。
需要说明的是,可选的,第二接入网设备执行其他操作包括:第二接入网设备不指示第一接入网设备开启在第一小区广播第一小区的SSB和/或第一小区的SI。
一种可能的实现方式中,上述图4A所示的实施例还包括步骤404至步骤405。步骤404至步骤405可以在步骤403之后执行。
404、第一接入网设备向终端设备发送第一小区的SSB和/或第一小区的SI。
具体的,第一接入网设备接收到来自第二接入网设备的指示信息后,第一接入网设备在第一小区广播第一小区的SSB和/或第一小区的SI。
例如,如图4B所示,第二接入网设备接收到第一接入网设备的指示信息之后,第二接入网设备在第一小区开启广播SSB和/或SI。也就是第一小区从极简广播模式切换到正常广播模式。
405、终端设备根据第一小区的SSB和/或第一小区的SI在第一小区进行驻留;或者,终端设备根据第一小区的SSB和/或第一小区的SI在第一小区进行同步;或者,终端设备 根据第一小区的SSB和/或第一小区的SI向第一小区发起随机接入。
步骤405与前述图2A所示的实施例中的步骤204类似,具体请参阅前述图2A所示的实施例中的步骤204的相关介绍,这里不再赘述。
本申请实施例中,终端设备接收来自第一接入网设备的第一小区的参考信号。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。终端设备向第二接入网设备发送测量结果。测量结果是终端设备测量参考信号得到的测量结果。由此可知,终端设备通过第一小区的参考信号感知到第一小区。并且,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省接入网设备的能耗开销。终端设备向第二接入网设备发送终端设备测量参考信号得到的测量结果。第二接入网设备获取到测量结果之后,可以结合测量结果指示第一接入网设备开启在第一小区广播第一小区的SSB和/或第一小区的SI。也就是上述技术方案提供了一种触发第二接入网设备指示第一接入网设备开启广播第一小区的SSB和/或第一小区的SI的手段。对于待接入第一小区的终端设备来说,通过上述技术方案可以实现第一接入网设备及时开启广播第一小区的SSB和/或第一小区的SI。有利于终端设备快速接入第一小区,减小终端设备接入小区的时延,提高通信性能。
上述图4A所示的实施例示出了第一小区和第二小区属于不同的接入网设备的实现方式,即第一接入网设备与第二接入网设备为不同的两个接入网设备。实际应用中,第一小区和第二小区所属的接入网设备也可以相同。即第一接入设备和第二接入网设备为同一接入网设备。例如,如图5A所示,第一小区和第二小区为接入网设备的两个小区。第一小区处于极简广播模式,第二小区处于正常广播模式。
基于第一小区和第二小区所属的接入网设备为同一接入网设备的实现方式,下面结合图5B介绍本申请实施例的技术方案。图5B所示的实施例与前述图4A所示的实施例类似,不同的地方请参阅后文图5B所示的实施例的相关介绍。
图5B为本申请实施例通信方法的另一个实施例示意图。请参阅图5B,通信方法包括:
501、接入网设备向终端设备发送第一小区的参考信号。相应的,终端设备接收来自接入网设备的第一小区的参考信号。
步骤501与前述图4A所示的实施例中的步骤401类似,具体请参阅前述图4A所示的实施例中的步骤401的相关介绍,这里不再赘述。
502、终端设备向接入网设备发送测量结果。相应的,接入网设备接收来自终端设备的测量结果。
第一小区和第二小区为接入网设备的小区。步骤502与前述图4A所示的实施例中的步骤402类似,具体请参阅前述图4A所示的实施例中的步骤402的相关介绍,这里不再赘述。
可选的,上述图5B所示的实施例还包括步骤502a。步骤502a可以在步骤502之前执行。
502a、终端设备测量参考信号,得到测量结果。
步骤502a与前述图4A所示的实施例中的步骤402a类似,具体请参阅前述图4A所示 的实施例中的步骤402a的相关介绍,这里不再赘述。
一种可能的实现方式中,上述图5B所示的实施例还包括步骤502b。步骤502b可以在步骤502之前执行。
502b、接入网设备向终端设备发送配置信息。相应的,终端设备接收来自终端设备的配置信息。
步骤502b与前述图4A所示的实施例中的步骤402b类似,具体请参阅前述图4A所示的实施例中的步骤402b的相关介绍,这里不再赘述。
基于步骤502b,可选的,上述步骤502具体包括:终端设备根据配置信息向接入网设备发送测量结果。具体终端设备发送测量结果可以参阅前述图4A所示的实施例中的相关介绍,这里不再赘述。
可选的,上述图5B所示的实施例还包括步骤503和步骤504。
503、接入网设备向终端设备发送第一小区的SSB和/或第一小区的SI。相应的,终端设备接收来自接入网设备的第一小区的SSB和/或第一小区的SI。
在图5B所示的实施例中,由于第一小区和第二小区所属的接入网设备是同一接入网设备。因此接入网设备接收到测量结果之后,接入网设备可以开启在第一小区广播SSB和/或SI,或者,接入网设备先判断是否开启在第一小区广播SSB和/或SI。
可选的,上述图5B所示的实施例还包括步骤503a。步骤503a在步骤503之前执行。
503a、接入网设备判断是否开启在第一小区广播第一小区的SSB和/或第一小区的SI;若是,则执行步骤503;若否,则接入网设备执行其他操作。
步骤503a的判断过程与前述图4A所示的实施例中的步骤403a类似,具体可以参阅前述图4A所示的实施例中的步骤403a的相关介绍,这里不再赘述。
504、终端设备根据第一小区的SSB和/或第一小区的SI在第一小区进行驻留;或者,终端设备根据第一小区的SSB和/或第一小区的SI在第一小区进行同步;或者,终端设备根据第一小区的SSB和/或第一小区的SI向第一小区发起随机接入。
步骤504与前述图2A所示的实施例中的步骤204类似,具体请参阅前述图2A所示的实施例中的步骤204的相关介绍,这里不再赘述。
本申请实施例中,终端设备接收来自接入网设备的第一小区的参考信号。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。终端设备向接入网设备发送测量结果。测量结果是终端设备测量参考信号得到的测量结果。由此可知,终端设备通过第一小区的参考信号感知到第一小区。并且,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省接入网设备的能耗开销。终端设备向接入网设备发送测量结果。接入网设备获取到测量结果之后,可以结合测量结果确定是否开启在第一小区广播第一小区的SSB和/或第一小区的SI。也就是提供了一种触发第二接入网设备开启广播第一小区的SSB和/或第一小区的SI的手段。对于待接入第一小区的终端设备来说,通过上述技术方案可以实现接入网设备及时开启广播第一小区的SSB和/或第一小区的SI。有利于终端设备快速接入第一小区,减少终端设备接入小区的时延, 提高通信性能。
上述图4A所示的实施例中,第一接入网设备可以替换为第一小区,第二接入网设备可以替换为第二小区。也就是以第一小区和第二小区作为执行主体介绍本申请的技术方案。下面通过图6所示的实施例介绍上述图4A所示的技术方案的另外一种描述方式。
图6为本申请实施例通信方法的另一个实施例示意图。请参阅图6,通信方法包括:
601、第一小区向终端设备发送参考信号。相应的,终端设备接收来自第一小区的参考信号。
602、终端设备向第二小区发送测量结果。相应的,第二小区接收来自终端设备的测量结果。
步骤601和步骤602与前述图4A所示的实施例中的步骤401至步骤402类似,只是描述方式上不同,具体可以参阅前述图4A所示的实施例中的步骤401至步骤402的相关介绍,这里不再赘述。
一种可能的实现方式中,上述图6所示的实施例还包括步骤602a。步骤602a在步骤602之前执行。
602a、终端设备测量参考信号,得到测量结果。
步骤602a与前述图4A所示的实施例中的步骤402a类似,具体请参阅前述图4A所示的实施例中的步骤402a的相关介绍,这里不再赘述。
可选的,上述图6所示的实施例还包括步骤602b,步骤602b在步骤602之前执行。
602b、第二小区向终端设备发送配置信息。相应的,终端设备接收来自第二小区的配置信息。
关于步骤602b与前述图4A所示的示例中的步骤402b类似,具体请参阅前述图4A所示的示例中的步骤402b的相关介绍,这里不再赘述。
基于步骤602b,可选的,上述步骤602具体包括:终端设备根据配置信息向第二小区发送测量结果。
603、第二小区向第一小区发送指示信息。相应的,第一小区接收来自第二小区的指示信息。
其中,指示信息用于指示第一小区广播第一小区的SSB和/或第一小区的SI。
步骤603与前述图4A所示的实施例中的步骤403类似,只是描述方式不同,具体可以参阅前述图4A所示的实施例中的步骤403的相关介绍,这里不再赘述。
可选的,图6所示的实施例还包括步骤603a。步骤603a可以在步骤603之前执行。
603a、第二小区判断是否指示第一小区开启广播第一小区的SSB和/或第一小区的SI;若是,则执行步骤603;若否,则第二小区执行其他操作。
步骤603a与前述图4A所示的实施例中的步骤403a类似,只是描述方式不同,具体可以参阅前述图4A所示的实施例中的步骤403a的相关介绍,这里不再赘述。
一种可能的实现方式中,上述图6所示的实施例还包括步骤604和步骤605。步骤604至步骤605可以在步骤603之后执行。
604、终端设备接收来自第一小区的SSB和/或SI。
605、终端设备根据第一小区的SSB和/或第一小区的SI在第一小区进行驻留;或者,终端设备根据第一小区的SSB和/或第一小区的SI在第一小区进行同步;或者,终端设备根据第一小区的SSB和/或第一小区的SI向第一小区发起随机接入。
步骤405与前述图2A所示的实施例中的步骤204类似,具体请参阅前述图2A所示的实施例中的步骤204的相关介绍,这里不再赘述。
本申请实施例中,终端设备接收来自第一小区的参考信号。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。终端设备向第二小区发送测量结果。测量结果是终端设备测量参考信号得到的测量结果。由此可知,终端设备通过第一小区的参考信号感知到第一小区。并且,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省接入网设备的能耗开销。终端设备向第二小区发送测量结果。这样第二小区获取到测量结果之后,可以结合测量结果指示第一小区开启在广播SSB和/或SI。也就是提供了一种触发第二小区指示第一开启广播SSB和/或SI的手段。对于待接入第一小区的终端设备来说,通过上述技术方案可以实现第一小区及时开启广播SSB和/或SI。有利于终端设备快速接入第一小区,减少终端设备接入第一小区的时延。
图7A为本申请实施例通信方法的另一个实施例示意图。请参阅图7A,通信方法包括:
701、第一接入网设备向终端设备发送第一小区的参考信号。相应的,终端设备接收来自第一接入网设备的第一小区的参考信号。
其中,第一小区为第一接入网设备的小区。第一小区包括一个或多个小区。
第一小区的参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。
可选的,第一小区的参考信号占用的时域符号数少于第一小区的SSB和第一小区的SI占用的时域符号数总和。
例如,如图7B所示,第一小区包括小区1和小区2。再结合图7C所示,小区1广播参考信号1,小区2广播参考信号2。小区1的参考信号1占用的时域符号数少于小区1对应的SSB1和小区1对应的SI1占用的时域符号数总和。小区2的参考信号2占用的时域符号数少于小区2对应的SSB2和小区2对应的SI2占用的时域符号数总和。
在一些实施方式中,一个或多个小区中每个小区位于载波上,不同小区所位于的载波不同。一个或多个小区分别所位于的载波为高频载波。
例如,如图7B所示,小区1位于1.8GHz(吉赫兹)的载波上,小区2位于1.9GHz的载波上。
需要说明的是,若第一小区包括多个小区,那么多个小区分别所属的接入网设备可以是同一接入网设备,也可以是不同的接入网设备,具体本申请不做限定。
例如,如图7B和图7C所示,第一小区包括小区1和小区2。小区1为接入网设备1的小区,小区2为接入网设备2的小区。因此,第一接入网设备包括接入网设备1和接入网设备2。在该实现方式下,终端设备接收来自接入网设备1的小区1的参考信号1,以及 接收来自接入网设备2的小区2的参考信号2。
例如,如图7C和图7D所示,第一小区包括小区1和小区2。小区1和小区2为接入网设备的两个小区。因此,第一接入网设备包括该接入网设备。在该实现方式下,终端设备接收来自接入网设备的参考信号1和参考信号2。
在一些实施方式中,参考信号可以称为DRS。DRS仅仅是一种示例,本申请对于参考信号的名称并不做限定。
在一些实施方式中,参考信号可以是以下任一种信号:第一小区的SSS、第一小区的PSS、第一小区的SBB、或者是新设计的信号,具体本申请不做限定。
针对参考信号为新设计的信号的实现方式,可选的,第一小区的参考信号包括以下至少一项信息:第一指示信息、第一小区的标识、第一小区关联的第二小区的标识、第二小区的频道编号、第一小区的索引、系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、第一小区的唤醒信号的发送时频资源、第一小区的唤醒信号所用的伪随机序列的特征参数、或终端设备发送第一小区的唤醒信号的条件。
下面结合参考信号包括的至少一项信息。
1、第一指示信息用于指示第一小区为DCC小区。关于DCC小区和BCC小区请参阅后文相关介绍。
2、第二小区的频道编号。
例如,第二接入网设备在频道2上发送参考信号。终端设备通过第二小区的频道编号可以确定频道2,并在频道2上监听第二小区的参考信号。
3、第一小区的索引。
其中,第一小区的索引也可以称为第一小区的编号。
例如,第二小区为BCC小区,第一小区包括多个DCC小区。每个DCC小区对应一个编号。例如,第一小区包括N+1个DCC小区,第一个DCC小区的编号为0,第二个DCC小区的编号为1,以此类推,第N+1个DCC小区的编号为N。N为大于或等于0的整数。
关于第一小区的标识和第二小区的标识与前述图2A所示的实施例中对第一小区的标识类似,具体请参阅前述图2A所示的实施例中对第一小区的标识相关介绍,这里不再赘述。
关于系统帧号、半帧指示、参考信号的索引、参考信号的波束索引、第一小区的唤醒信号的发送时频资源、第一小区的唤醒信号所用的伪随机序列的特征参数以及终端设备发送第一小区的唤醒信号的条件可以参阅前述图2A所示的实施例中的相关介绍,这里不再赘述。
具体的,上述步骤701中,第一小区的参考信号可以是根据伪随机序列生成的。例如,伪随机序列可以为m序列、Gold序列、或ZC序列等,具体本申请不做限定。
参考信号包括上述示出的至少一项信息。第一接入网设备可以采用伪随机序列表征上述信息。例如,第一接入网设备可以根据上述信息配置伪随机序列的生成初始值或移位值,再产生相应的伪随机序列。
例如,第一小区包括DCC小区1,用于生成DCC小区1的参考信号的伪随机序列是127位的Gold序列。Gold序列由两个m序列模2相加生成,具体生成过程如图7E所示。其中, c(n)为生成DCC小区1的参考信号的伪随机序列。第一个m序列的初始值为0000000000000000000000000000001;第二个m序列的初始值的第0位至第9位用于表示BCC小区的标识,第11位至第15位用于表示DCC小区1的索引,其余位为0。第一接入网设备通过图7E所示的生成过程得到伪随机序列c(n)。第一接入网设备对c(n)进行傅里叶变换处理或傅里叶反变换处理,从而生成DCC小区1的参考信号。
那么可知,参考信号包括BCC小区的标识以及DCC小区1的参考信号的索引。终端设备接收到参考信号之后,可以推导得到BCC小区的标识以及DCC小区1的参考信号的索引。
可选的,第一小区的参考信号包括至少一个子信号。关于至少一个子信号可以参阅前述图2A所示的实施例中的相关介绍,这里不再赘述。关于至少一个子信号还可以进一步结合前述图2D和图2E所示的示例进行理解,这里不再赘述。
702、第二接入网设备向终端设备发送接入信息。相应的,终端设备接收来自第二接入网设备的接入信息。
其中,接入信息包括第一小区的接入信息。接入信息用于终端设备从第一小区选择候选接入小区进行接入。
第二接入网设备为第二小区的接入网设备,第一小区为第二小区关联的小区。可选的,终端设备可以驻留或接入第二小区。
在一些实施方式中,第一小区和第二小区之间的关联可以通过以下两种可能的方面表征:
1、从载波方面来说,第一小区和第二小区分别位于载波上,且该两个小区分别位于的载波不同。
在通信网络中,载波可以分为基础层载波和容量层载波。基础层载波用于提供网络的基础信号覆盖。通常基础层载波为低频载波,这样基础层载波的信号覆盖范围较大,便于实现网络的基础信号覆盖。基础层载波可以称为基础分量载波(basic component carrier,BCC)。基础层载波对应的小区可以称为基础层小区。容量层载波用于提供更多的网络容量。通常容量层载波为高频载波,便于覆盖热点较高或容量要求较高的区域,实现为这部分区域提供更高的网络容量。容量层载波可以称为数据分量载波(data component carrier,DCC)。容量层载波对应的小区可以称为容量层小区。
上述第一小区可以称为DCC小区,第二小区可以称为BCC小区。第二小区用于网络的基础信号覆盖。第一小区用于提供更多的网络容量。
需要说明的是,第一小区和第二小区的名称仅仅是一种示例,本申请对第一小区和第二小区的名称并不做限定。
例如,如图7B所示,第一小区包括小区1和小区2。第二小区为小区3。小区3位于基础层载波,即小区3为BCC小区。小区3的信号覆盖范围较大。小区1和小区2分别位于容量层载波,即小区1和小区2分别为DCC小区。小区1和小区2分别对应的信号覆盖范围较小。
2、从信号覆盖范围方面来说,第一小区的信号覆盖范围与第二小区的信号覆盖范围之间有重叠。
例如,如图7B或图7D所示,第一小区包括小区1和小区2。第二小区为小区3。小区3的信号覆盖范围较大。小区1和小区2分别对应的信号覆盖范围可以落在小区3的信号覆盖范围内。也就是小区1的信号覆盖范围与小区3的信号覆盖范围有重叠。小区2的信号覆盖范围与小区3的信号覆盖范围有重叠。
需要说明的是,第二小区可以包括一个或多个小区。例如,如图7B所示,第二小区为小区3,小区3为BCC小区,小区1和小区2为BCC小区关联的DCC小区。本申请以第一小区包括一个小区为例进行介绍。
在一些实施方式中,上述步骤702可以是在第二接入网设备广播第二小区的SSB和/或第二小区的SI的过程中执行。
例如,如图7F所示,第一小区包括小区1和小区2。第二小区为小区3。小区1不广播小区1的SSB和/或小区1的SI,而是广播小区1的参考信号1。小区2不广播小区2的SSB和/或小区2的SI,而是广播小区2的参考信号2。这里称小区1和小区2处于低功耗的极简广播模式。小区3可以广播小区3的SSB和/或小区3的SI,这里称小区3处于正常广播模式。可选的,在小区3广播小区3的SSB和/或小区3的SI的过程中,小区3广播小区1的接入信息和小区2的接入信息。
由上述图7F所示的示例可知,小区1和小区2处于低功耗的极简广播模式,同时终端设备又能够感知到小区1和小区2。如图7B所示,终端设备1能够感知到小区1,终端设备2能够感知到小区2。并且,小区3广播小区1的接入信息和小区2的接入信息。小区1和小区2无需广播接入信息,从而节省了小区1和小区2的能耗开销。终端设备1可以获取到小区1的接入信息。若终端设备1需要接入小区1(例如,终端设备1有数据待发送),终端设备1可以根据小区1的接入信息快速接入小区1。终端设备2可以获取到小区2的接入信息。若终端设备2需要接入小区2(例如,终端设备2有数据待发送),终端设备2可以根据小区2的接入信息快速接入小区2。
在一些实施方式中,第一小区位于第一载波,第二小区位于第二载波,第一载波和第二载波不同。
例如,如图7B所示,第一小区包括小区1和小区2。第二小区为小区3。小区1位于高频载波1,小区2位于高频载波2,小区3位于低频载波1。高频载波1和高频载波2不同。
一种可能的实现方式中,接入信息包括以下至少一项:第一小区的标识、第一小区的索引、第一小区的频道编号、第一小区的优先级、参考信号的起始时域位置相对于第二小区对应的SSB的起始时域位置或结束时域位置的偏移量、第一小区所支持的网络的标识、第一小区的随机接入参数、第一小区的选择参数、第一小区的重选参数、第一小区的唤醒信号的发送时频资源、第一小区的唤醒信号所用的伪随机序列的特征参数、或终端设备发送第一小区的唤醒信号的条件。
下面介绍接入信息包括的至少一项信息。
关于第一小区的标识、第一小区的索引、第一小区的频道编号、第一小区的唤醒信号的发送时频资源、第一小区的唤醒信号所用的伪随机序列的特征参数以及终端设备发送第 一小区的唤醒信号的条件请参阅前述图2A所示的实施例中的相关介绍,这里不再赘述。
第一小区的优先级用于指示第一小区包括的一个或多个小区分别对应的优先级。
例如,第一小区包括多个DCC小区,每个DCC小区有对应的一个取值。取值越大,优先级越高;取值越小,优先级越低。
需要说明的是,一种可能的实现方式中,第一接入网设备根据第一小区所位于的载波的频段确定第一小区的优先级。例如,第一接入网设备在高频载波上发射信号所需的发射功率较大。因此,位于高频载波的小区的优先级较低,位于低频载波的小区的优先级较高。从而进一步节省接入网设备的能耗开销,提高节能效果。
参考信号的起始时域位置相对于第二小区的SSB的起始时域位置或结束时域位置的偏移量。可选的,参考信号的起始时域符号相对于第二小区对应的SSB的起始时域符号的偏移量。
例如,如图7F所示,第一小区包括小区1和小区2。小区1的参考信号1的起始时域符号为时域符号1。小区2的参考信号2的起始时域符号为时域符号2。第二小区为小区3,小区3的SSB的起始时域符号为时域符号0。那么可知,小区1的参考信号1的起始时域符号与小区3的SSB的起始时域符号的偏移量为1。小区2的参考信号2的起始时域符号与小区3的SSB的起始时域符号的偏移量为2。
第一小区所支持的网络的标识用于终端设备确定是否接入第一小区。
例如,终端设备签约的是移动网络,而第一小区所支持的网络是联通网络,那么终端设备不能接入第一小区。
可选的,第一小区的随机接入参数包括以下至少一项:PRACH时频资源、或前导码的根序列索引。
第一小区的选择参数用于终端设备从第一小区选择候选接入小区。
例如,第一小区的选择参数包括参考信号的接收功率门限值。也就是若终端设备检测到参考信号的接收功率大于或等于接收功率门限值,终端设备可以选择该小区作为候选接入小区。
第一小区的重选参数用于终端设备重新从第一小区中选择候选接入小区。
一种可能的实现方式中,第一小区的重选参数包括以下至少一项:参考信号的测量周期、触发终端设备测量参考信号的接收功率门限值、测量频率优先级、用于第一小区重选的参考信号接收功率门限值。
关于参考信号的测量周期可以参阅前述图4A所示的实施例中的相关介绍,这里不再赘述。
触发终端设备测量参考信号的接收功率门限值是指在终端设备在所接入的小区的参考信号的接收功率小于或等于该接收功率门限值时,终端设备可以测量其他小区的参考信号。
测量频率优先级用于指示终端设备不同频率小区的参考信号的测量优先级。例如,基站在低频小区广播SSB和/或SI所消耗的能耗要小于基站在高频小区广播SSB和/或SI的能耗开销。因此,低频小区的测量优先级可以高于高频频率优先级。这样终端设备可以优先选择测量低频小区的参考信号,以接入低频小区。
用于第一小区重选的参考信号接收功率门限值是指:终端设备重选的候选接入小区的参考信号的接收功率大于或等于该用于第一小区重选的参考信号接收功率门限值。
由上述示出的第一小区的接入信息可知,第一小区的接入信息可以包括用于终端设备选择候选接入小区的选择信息和用于终端设备接入候选接入小区的接入信息。
另一种可能的实现方式中,第一小区的接入信息包括第一小区的SI。
具体的,在该实现方式中,第二小区可以广播第一小区的SI。以便于后续终端设备从第一小区选择并接入候选接入小区。这样终端设备可以快速接入候选接入小区。第一接入网设备无需广播第一小区的接入信息,节省了第一接入网设备的能耗开销。
可选的,第二小区关联的小区有多个。第一小区包括第二小区关联的所有小区;或者,第一小区包括第二小区关联的部分小区。
例如,第一小区为DCC小区,第二小区为BCC小区。第一小区包括BCC小区关联的所有DCC小区;或者,第一小区包括BCC小区关联的部分DCC小区。
例如,第二小区可以默认广播第二小区关联的所有小区的接入信息。这样方便终端设备根据接入信息从第一小区选择和接入候选接入小区。或者,第二小区可以广播第二小区关联的小区中优先级较高的小区的接入信息。也就是第一小区包括第二小区关联的部分小区。从而减少第二小区的广播量,节省第二小区的广播能耗开销。关于优先级的设置请参阅前述的相关介绍。或者,第二小区可以广播终端设备请求广播的第一小区的接入信息,具体请参阅后文步骤702a中的相关介绍。
可选的,上述图7A所示的实施例还包括步骤702a,步骤702a可以在步骤702之前执行。
702a、终端设备向第二接入网设备发送第一请求。相应的,第二接入网设备接收来自终端设备的第一请求。
其中,第一请求用于向第二接入网设备请求第一小区的接入信息。
例如,第二小区广播第二小区的SSB和第二小区的SI。终端设备驻留或接入第二小区,终端设备接收第二小区的广播消息。广播消息包括第二小区的SSB和第二小区的SI。终端设备向第二接入网设备发送第一请求。那么第二小区广播第二小区的SSB和第二小区的SI,同时还广播第一小区的接入信息。
可选的,第二小区关联的小区有多个,终端设备向第二接入网设备请求广播第二小区关联的小区的接入信息。终端设备可以不指定第二接入网设备广播哪些小区的接入信息。第一接入网设备可以广播第二小区关联的所有小区的接入信息。
在该实现方式中,第一小区包括第二小区关联的所有小区。
可选的,第二小区关联的小区有多个,第一请求用于向请求第二接入网设备广播指定小区的接入信息。指定小区为第二小区关联的部分小区。因此,第一接入网设备可以广播指定小区的接入信息。第二接入网设备无需广播第二小区关联的所有小区的接入信息。减少了第二接入网设备的广播量,从而减少第二接入网设备的能耗开销。
在该实现方式中,第一小区包括第二小区关联的部分小区。
例如,如图7G所示,BCC小区广播BCC小区的SSB和BCC小区的SI。第二小区关联的 小区包括DCC小区1和DCC小区2。若终端设备需要接入DCC小区(例如,终端设备有数据待发送),终端设备可以通过第一请求向BCC小区请求BBC小区关联的DCC小区的接入信息。BCC小区接收到第一请求之后,BCC小区可以广播DCC小区1的接入信息和DCC小区的接入信息。
一种可能的实现方式中,上述步骤702a具体包括:终端设备通过前导码或RRC系统请求消息向第二接入网设备发送第一请求。
其中,前导码包括第一请求;或者,RRC系统请求消息包括第一请求。
终端设备根据第一请求配置生成前导码的伪随机序列的初始值或移位值。然后,终端设备根据初始值或移位值生成伪随机序列,再根据伪随机序列生成前导码。
上述实现方式中,提供终端设备发送第一请求的两种承载载体,为方案的实施提供基础。其次,终端设备采用前导码向第二接入网设备发送第一请求,终端设备无需接入第二小区。终端设备可以快速向第二接入网设备传递信息,便于终端设备快速获取第一小区的接入信息。这样有利于终端设备快速选择候选接入小区,并接入候选接入小区。从而减少终端设备接入小区的时延,提高通信性能。
可选的,上述步骤702具体包括:在终端设备检测到第一小区的参考信号中存在接收功率大于或等于门限值的情况下,终端设备向第二接入网设备发送第一请求。
其中,门限值可以是预设的,或者是,配置的,或者是通信标准定义的,具体本申请不做限定。
在该实现方式中,终端设备在检测到参考信号的接收功率大于门限值时,终端设备向第二接入网设备请求第一小区的接入信息。这样可以避免终端设备频繁的请求第二接入网设备广播第一小区的接入信息,从而节省第二接入网设备的能耗开销。并且,参考信号的接收功率大于门限值的情况下,说明终端设备接收到该参考信号对应的小区的信号强度较大。这样后续如果终端设备接入该小区,该小区可以为终端设备提供较好的通信质量。从而提高通信性能。
一种可能的实现方式中,上述图7A所示的实施例还包括步骤702b,在步骤702b可以在步骤703之前执行。
702b、第二接入网设备向终端设备发送第二指示信息。相应的,终端设备接收来自第二接入网设备的第二指示信息。
其中,第二指示信息用于指示第二小区为BCC小区。
具体的,第二接入网设备可以通过第二指示信息指示第二小区为BCC小区。这样终端设备可以向第二小区请求第一小区的接入信息。
需要说明的是,步骤702b与步骤701之间没有固定的执行顺序。可以先执行步骤701,再执行步骤702b;或者,先执行步骤702b,再执行步骤701;或者依据情况同时执行步骤701和步骤702b。
可选的,上述图7A所示的实施例还包括步骤702c。
702c:第二接入网设备向终端设备发送用于第二小区重选的接收功率门限值。
具体的,终端设备检测到其他第二小区的SSB的接收功率大于该用于第二小区重选的 接收功率门限值时,终端设备可以重选该其他第二小区。
需要说明的是,步骤702c与步骤701、步骤702a、步骤702b和步骤702之间没有固定的执行顺序。可以先执行步骤702c,再执行步骤701、步骤702a、步骤702b和步骤702;或者,先执行步骤701、步骤702a、步骤702b和步骤702,再执行步骤702c,具体本申请不做限定。
703、终端设备确定候选接入小区。
其中,候选接入小区是根据接入信息和参考信号从第一小区中选择的。
具体的,终端设备根据接入信息和参考信号从第一小区选择候选接入小区。
例如,接入信息包括DCC小区的频道编号和DCC小区的优先级。终端设备可以根据接入信息搜索DCC小区,并测量DCC小区的功率。例如,终端设备按照DCC小区的优先级从高到低的顺序依次在每个DCC小区所在的频道上搜索DCC小区。当终端设备检测到DCC小区的参考信号的接收功率超过上报接收功率门限值,和/或,该DCC小区是所在的频道上信号最强的小区,那么终端设备可以将该DCC小区作为候选接入小区。
若该DCC小区的优先级高于其他DCC小区的优先级。终端设备可以不检测其他DCC小区的参考信号。也就是将该DCC小区作为最终确定的候选接入小区。这样终端设备可以快速确定候选接入小区,从而实现终端设备快速接入候选接入小区。
可选的,上述图7A所示的实施例还包括步骤704,步骤704可以在步骤703之后执行。
704、若终端设备上有数据待发送,终端设备根据接入信息向候选接入小区发起随机接入。
例如,候选接入小区为DCC小区1。接入信息包括DCC小区1的随机接入参数。终端设备通过DCC小区1的随机接入参数向候选接入小区发起随机接入。
一种可能的实现方式中,上述图7A所示的实施例还包括步骤704a,步骤704a可以在步骤704之前,在步骤703之后执行。
704a、终端设备重选候选接入小区。
关于步骤704a的具体执行过程请参阅后文图7H所示的实施例的详细介绍,这里不再赘述。
基于步骤704a,可选的,上述步骤704具体包括:若终端设备上有数据待发送,终端设备根据接入信息向重选的候选接入小区发起随机接入。
本申请实施例中,终端设备通过第一小区的参考信号感知到第一小区。参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省第一接入网设备的能耗开销。终端设备从第二接入网设备获取第一小区的接入信息。这样终端设备可以根据接入信息和第一小区的参考信号选择候选接入小区进行接入。从而实现终端设备快速接入候选接入小区。减少了终端设备接入小区的时延,提高了通信性能。
下面结合图7H所示的实施例详细介绍上述步骤704a。步骤704a具体包括步骤7041至步骤7045。
请参阅图7H,图7H为本申请实施例通信方法的另一个实施例示意图。在图7H中,通 信方法包括:
7041、终端设备确定第三小区;
其中,第三小区为DCC小区。
具体的,终端设备搜索DCC小区。例如,终端设备可以周期性地搜索DCC小区;或者,终端设备在上述步骤704中选择的候选接入小区的参考信号的接收功率低于触发测量参考信号的功率门限值时搜索DCC小区。
终端设备可以按照DCC小区的优先级搜索DCC小区。终端设备检测到第三小区的参考信号的接收功率大于上述步骤704中选择的候选接入小区的参考信号的接收功率,终端设备可以确定第三小区。或者,终端设备检测到第三小区的参考信号的接收功率大于用于第一小区重选的参考信号接收功率门限值,终端设备可以确定第三小区。
7042、终端设备判断第三小区关联的第四小区是否与第二小区为同一小区;若是,则执行步骤7045;若否,则执行步骤7043;
第三小区是第四小区关联的小区。
关于第三小区与第四小区的关联与前述图7A所示的实施例中步骤701中第一小区与第二小区的关联类似,具体可以参阅前述图7A所示的实施例中步骤701的相关介绍,这里不再赘述。
例如,第三小区为DCC小区,第四小区为BCC小区。终端设备判断第四小区与第二小区是否为同一BCC小区,若是,则执行步骤7045;若否,则执行步骤7043。
下面介绍终端设备判断第四小区与第二小区是否为同一BCC小区的一种可能实现方式。
终端设备判断第二小区的广播消息中是否包含第三小区的标识。如果包含了第三小区的标识,则表示第四小区与第二小区是同一个BCC小区。如果不包含第三小区的标识,则表示第四小区与第二小区不是同一BCC小区。
7043、终端设备判断第四小区的SSB的接收功率是否大于用于第二小区重选的接收功率门限值;若是,则执行步骤7044;若否,则终端设备执行其他操作。
在一些实施方式中,终端设备可以根据第三小区的参考信号中携带的信息确定第三小区关联的第四小区。
例如,第三小区的参考信号包括第四小区的标识。那么终端设备根据第四小区的标识在部分或全部频道上搜索第四小区。
例如,第三小区的参考信号包括第四小区的标识和第四小区的频道编号。终端设备可以在该频道编号对应的频道上搜索第四小区。
终端设备测量第四小区广播的SSB的接收功率,如果该SSB的接收功率大于或等于用于第二小区重选的接收功率门限值,则执行步骤7044;如果该SSB的接收功率小于第二小区重选的接收功率门限值,则终端设备执行其他操作。
需要说明的是,可选的,终端设备执行其他操作包括:终端设备重新搜索DCC小区以重选DDC小区。
7044、终端设备选择第四小区进行驻留或接入,并将第三小区作为重选的候选接入小区。
7045、终端设备将第三小区作为重选的候选接入小区。
上述图7A示出的是第一小区和第二小区属于不同的接入网设备的实现方式。即第一接入网设备与第二接入网设备是不同的两个接入网设备。实际应用中,第一小区和第二小区所属的接入网设备也可以相同。即第一接入网设备和第二接入网设备为同一接入网设备。
例如,如图7D所示,第一小区包括小区1和小区2。第二小区为小区3。小区1、小区2和小区3为接入网设备的三个小区。小区1和小区2处于极简广播模式,小区3处于正常广播模式。
基于第一小区和第二小区所属的接入网设备为同一接入网设备的实现方式,下面结合图8介绍本申请实施例的技术方案。图8所示的实施例与前述图7A所示的实施例类似,不同的地方具体通过后文图8所示的实施例的相关介绍。
图8为本申请实施例通信方法的另一个实施例示意图。请参阅图8,通信方法包括:
801、接入网设备向终端设备发送第一小区的参考信号。相应的,终端设备接收来自接入网设备的第一小区的参考信号。
802、接入网设备向终端设备发送第一小区的接入信息。相应的,终端设备接收来自接入网设备的第一小区的接入信息。
步骤801至步骤802与前述图7A所示的实施例中的步骤701至步骤702类似,具体请参阅前述图7A所示的实施例中的步骤701至步骤702的相关介绍,这里不再赘述。
需要说明的是,步骤801与步骤802之间没有固定的执行顺序。可以先执行步骤801,再执行步骤802;或者,先执行步骤802,再执行步骤801;或者依据情况同时执行步骤801和步骤802,具体本申请不做限定。
可选的,上述图8所示的实施例还包括步骤802a,步骤802a可以在步骤802之前执行。
802a、终端设备向接入网设备发送第一请求。相应的,接入网设备接收来自终端设备的第一请求。
需要说明的是,步骤802a与步骤801之间没有固定的执行顺序。可以先执行步骤801再执行步骤802a;或者,先执行步骤802a再执行步骤801;或者,依据情况同时执行步骤801和步骤802a,具体本申请不做限定。
可选的,上述图8所示的实施例还包括步骤802b。步骤802b可以在步骤802a之前执行。
802b、接入网设备向终端设备发送指示信息。相应的,终端设备接收来自接入网设备的指示信息。
步骤802b与前述图7A所示的实施例中的步骤702b类似,具体请参阅前述图7A所示的实施例中的步骤702b的相关介绍,这里不再赘述。
803、终端设备确定候选接入小区。
步骤803与前述图7A所示的实施例中的步骤703类似,具体请参阅前述图7A所示的实施例中的步骤703的相关介绍,这里不再赘述。
可选的,上述图8所示的实施例还包括步骤804,步骤804在步骤803之后执行。
804、若终端设备上有数据待发送,终端设备根据接入信息向候选接入小区发起随机接入。
步骤804与前述图7A所示的实施例中的步骤704类似,具体请参阅前述图7A所示的实施例中的步骤704的相关介绍,这里不再赘述。
一种可能的实现方式中,上述图8所示的实施例还包括步骤804a,步骤804a可以在步骤804之前,在步骤803之后执行。
804a、终端设备重选候选接入小区。
步骤804a与前述图7A所示的实施例中的步骤704a类似,具体请参阅前述图7A所示的实施例中的步骤704a的相关介绍,这里不再赘述。
基于步骤804a,可选的,上述步骤804具体包括:若终端设备上有数据待发送,终端设备根据接入信息向重选的候选接入小区发起随机接入。
本申请实施例中,终端设备通过第一小区的参考信号感知到第一小区。并且,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省接入网设备的能耗开销。终端设备从接入网设备获取第一小区的接入信息。这样终端设备可以根据接入信息和第一小区的参考信号选择候选接入小区进行接入。实现终端设备快速接入候选接入小区,减少了终端设备接入小区的时延,提高了通信性能。
上述图7A所示的实施例中,第一接入网设备可以替换为第一小区,第二接入网设备可以替换为第二小区。也就是由第一小区和第二小区作为执行主体介绍本申请的技术方案。下面通过图9所示的实施例介绍上述图7A所示的技术方案的另外一种描述方式。
图9为本申请实施例通信方法的另一个实施例示意图。请参阅图9,通信方法包括:
901、终端设备接收来自第一小区的参考信号。
第一小区为第一接入网设备所属的小区。
902、终端设备接收来自第二小区的接入信息,接入信息包括第一小区的接入信息。
第二小区为第二接入网设备所属的小区。
步骤901至步骤902与前述图7A所示的实施例中的步骤701至步骤702类似,具体请参阅前述图7A所示的实施例中的步骤701至步骤702的相关介绍,这里不再赘述。
可选的,上述图9所示的实施例还包括步骤902a,步骤902a可以在步骤902之前执行。
902a、终端设备向第二小区发送第一请求。第一请求用于请求第二小区发送第一小区的接入信息。
可选的,上述图9所示的实施例还包括步骤902b,步骤902b可以在步骤902之前执行。
902b、终端设备接收来自第二小区的第二指示信息。
步骤902a与前述图7A所示的实施例中的步骤702a类似,步骤902b与前述图7A所示的实施例中的步骤702b类似,具体请参阅前述图7A所示的实施例中的步骤702a和步骤702b的相关介绍,这里不再赘述。
903、终端设备确定候选接入小区。
904、若终端设备上有数据待发送,终端设备根据接入信息向候选接入小区发起随机接入。
步骤903至步骤904与前述图7A所示的实施例中的步骤703至步骤704类似,具体请参阅前述图7A所示的实施例中的步骤703的相关介绍,这里不再赘述。
可选的,上述图9所示的实施例还包括步骤904a,步骤904a可以在步骤904之前执行。
904a、终端设备重选候选接入小区。
基于步骤904a,可选的,上述步骤904具体包括:若终端设备上有数据待发送,终端设备根据接入信息向重选的候选接入小区发起随机接入。
步骤904a与前述图7A所示的实施例中的步骤704a类似,具体请参阅前述图7A所示的实施例中的步骤704a的相关介绍,这里不再赘述。
本申请实施例中,终端设备通过第一小区的参考信号感知到第一小区。并且,参考信号占用的时域资源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一小区用于广播参考信号的功耗较低,也就是第一小区处于低功耗的广播模式。从而节省接入网设备的能耗开销。终端设备从接入网设备获取第一小区的接入信息。这样终端设备可以根据接入信息和第一小区的参考信号选择候选接入小区进行接入。实现终端设备快速接入候选接入小区,减少了终端设备接入小区的时延,提高了通信性能。
图10为本申请实施例通信方法的另一个实施例示意图。请参阅图10,通信方法包括:
1001、第二接入网设备向终端设备发送第一小区的唤醒信号信息。相应的,终端设备接收来自第二接入网设备的第一小区的唤醒信号信息。
其中,第二接入网设备为第二小区的接入网设备,第一小区为第二小区关联的小区。关于第一小区与第二小区的关联的相关介绍请参阅前述图7A所示的实施例中的步骤701的相关介绍,这里不再赘述。
第一小区的唤醒信号信息包括以下至少一项:第一小区的唤醒信号的发送时频资源、第一小区的唤醒信号所用的伪随机序列的特征参数、或终端设备发送第一小区的唤醒信号的条件。关于第一小区的唤醒信号信息包括的内容请参阅前述图7A所示的实施例中的相关介绍。
1002、第一接入网设备向终端设备发送第一小区的参考信号。相应的,终端设备接收来自第一接入网设备的第一小区的参考信号。
第一接入网设备为第一小区的接入网设备。关于第一小区的参考信号的相关介绍可以参阅前述图7A所示的实施例中步骤701中对第一小区的参考信号的相关介绍,这里不再赘述。
1003、终端设备向第一接入网设备发送候选接入小区的唤醒信号。相应的,第一接入网设备接收来自终端设备的候选接入小区的唤醒信号。
具体的,终端设备测量第一小区的参考信号,并从第一小区中选择候选接入小区。终端设备向第一接入网设备发送候选接入小区的唤醒信号。
可选的,当满足第二条件时,终端设备向第一接入网设备发送候选接入小区的唤醒信号。
其中,第二条件包括以下至少一项:候选接入小区的参考信号的接收功率大于第三门限值;或候选接入小区的参考信号是第一小区中的接收功率最大的参考信号。
可选的,上述步骤1001的第一小区的唤醒信号信息包括候选接入小区的唤醒信号的发送时频资源和候选接入小区的唤醒信号所用的伪随机序列的特征参数。
那么图10所示的实施例还包括步骤1003a,步骤1003a在步骤1003之后执行。
1003a:终端设备根据候选接入小区的唤醒信号所用的伪随机序列的特征参数生成唤醒信号。步骤1003a与前述图2A所示的实施例中步骤202b类似,具体请参阅前述图2A所示的实施例中步骤202b的相关介绍,这里不再赘述。
上述步骤1003具体包括:终端设备在候选接入小区的唤醒信号的发送时频资源上向第一接入网设备发送候选接入小区的唤醒信号。
可选的,图10所示的实施例还包括步骤1004至步骤1006。
1004、第一接入网设备判断是否开启在候选接入小区广播SSB和/或SI;若是,则执行步骤1005;若否,第一接入网设备执行其他操作。
一种可能的实现方式中,第一接入网设备根据第三信息判断是否开启在候选接入小区广播SSB和/或SI。如果是,则开启在候选接入小区广播SSB和/或SI。
第三信息包括以下至少一项:候选接入小区的负载、第二小区的负载和第一接入网设备接收到的唤醒信号的接收功率。
例如,若候选接入小区的负载较小、第二小区的负载较大和唤醒信号的接收功率较大,那么第一接入网设备可以在候选接入小区广播SSB和/或SI。
例如,若候选接入小区的负载较大以及第二小区的负载较小,那么第一接入网设备可以不开启在候选接入小区广播SSB和/或SI。
需要说明的是,可选的,第一接入网设备执行其他操作包括:第一接入网设备保持原有状态,即第一接入网设备在候选接入小区不广播SSB和/或SI。
1005、第一接入网设备向终端设备发送候选接入小区的SSB和/或SI;相应的,终端设备接收来自第一接入网设备的候选接入小区的SSB和/或SI。
1006、终端设备根据SSB和/或SI在候选接入小区驻留;或者,终端设备根据SSB和/或SI在候选接入小区进行同步;或者,终端设备根据SSB和/或SI向候选接入小区发起随机接入。
步骤1005至步骤1006与前述图2A所示的实施例中的步骤203至步骤204,具体可以参阅前述图2A所示的实施例中的步骤203至步骤204的相关介绍,这里不再赘述。
本申请实施例中,终端设备接收来自第二接入网设备的第一小区的唤醒信号信息。第二接入网设备为第二小区的接入网设备,第一小区为第一小区关联的小区。终端设备接收来自第一接入网设备的第一小区的参考信号。终端设备向候选接入小区发送候选接入小区的唤醒信号。唤醒信号用于唤醒第一接入网设备在候选接入小区广播SSB和/或SI。由此可知,终端设备通过第一小区的参考信号感知到第一小区。并且,参考信号占用的时域资 源少于第一小区的SSB和第一小区的SI占用的时域资源总和。这样第一接入网设备用于广播参考信号的功耗较低,即第一小区处于低功耗的极简广播模式。终端设备通过参考信号感知到第一小区。终端设备根据第一小区的唤醒信号信息向第一接入网设备发送候选接入小区的唤醒信号。这样第一接入网设备可以及时开启在候选接入小区广播SSB和/或SI。这样终端设备可以快速接入候选接入小区。从而减小终端设备接入小区的时延,提高通信性能。
下面对本申请实施例提供的一种通信装置进行描述。请参阅图11,本申请实施例通信装置1100的一种结构示意图。通信装置1100包括接收单元1101和发送单元1102。可选的,通信装置1100还包括处理单元1103。
当通信装置1100为终端设备,或终端设备内的芯片时,通信装置1100可以用于执行上述图2A、图3、图4A、图5B、图6和图10所示的实施例中终端设备执行的部分或全部步骤,具体可以参考上述图2A、图3、图4A、图5B、图6和图10所示的实施例的相关描述。
例如,接收单元1101用于执行图2A所示的实施例中的步骤201,发送单元1102用于执行图2A所示的实施例中的步骤202。
可选的,处理单元1103用于执行图2A所示的实施例中的步骤202a、步骤202b和步骤204。
例如,接收单元1101用于执行图3所示的实施例中的步骤301,发送单元1102用于执行图3所示的实施例中的步骤302。
可选的,处理单元1103用于执行图3所示的实施例中的步骤302a、步骤302b和步骤304。
例如,接收单元1101用于执行图4A所示的实施例中的步骤401,发送单元1102用于执行图4A所示的实施例中的步骤402。
可选的,接收单元1101用于执行图4A所示的实施例中的步骤402b、步骤404。
可选的,处理单元1103用于执行图4A所示的实施例中的步骤402a和步骤405。
例如,接收单元1101用于执行图5B所示的实施例中的步骤501,发送单元1102用于执行图5B所示的实施例中的步骤502。
可选的,接收单元1101用于执行图5B所示的实施例中的步骤502b和步骤503。
可选的,处理单元1103用于执行图5B所示的实施例中的步骤502a和步骤504。
例如,接收单元1101用于执行图6所示的实施例中的步骤601,发送单元1102用于执行图6所示的实施例中的步骤602。
可选的,接收单元1101用于执行图6所示的实施例中的步骤602b、步骤604。
可选的,处理单元1103用于执行图6所示的实施例中的步骤602a和步骤605。
例如,接收单元1101用于执行图10所示的实施例中的步骤1001和步骤1002。发送单元1102用于执行图10所示的实施例中的步骤1003。
可选的,接收单元1101还用于执行图10所示的实施例中的步骤1005。处理单元1103用于执行图10所示的实施例中的步骤1006。
当通信装置1100为接入网设备,或接入网设备内的芯片时,通信装置1100可以用于执行上述图2A所示的实施例中接入网设备执行的部分或全部步骤;通信装置1100可以用于执行图3所示的实施例中第一小区执行的部分或全部步骤;通信装置1100可以用于执行图4A、图5B和图6所示的实施例中第一接入网设备或第二接入网设备执行的部分或全部步骤。通信装置1100可以用于执行图10所示的实施例中第二接入网设备执行的部分或全部步骤。具体可以参考上述图2A、图3、图4A、图5B、图6和图10所示的实施例的相关描述。
例如,发送单元1102用于执行图2A所示的实施例中的步骤201。接收单元1101用于执行图2A所示的实施例中的步骤202,
可选的,处理单元1103用于执行图2A所示的实施例中的步骤203a。
可选的,发送单元1102用于执行图2A所示的实施例中的步骤203。
例如,发送单元1102用于执行图3所示的实施例中的步骤301。接收单元1101用于执行图3所示的实施例中的步骤302,
可选的,处理单元1103用于执行图3所示的实施例中的步骤303a。
可选的,发送单元1102用于执行图3所示的实施例中的步骤303。
例如,发送单元1102用于执行图4A所示的实施例中的步骤401。接收单元1101用于执行图4A所示的实施例中的步骤403,
可选的,发送单元1102用于执行图4A所示的实施例中的步骤404。
例如,发送单元1102用于执行图5B所示的实施例中的步骤501。接收单元1101用于执行图5B所示的实施例中的步骤502,
可选的,发送单元1102还用于执行图5B所示的实施例中的步骤502b和步骤503。
可选的,处理单元1103还用于执行图5B所示的实施例中的步骤503a。
例如,发送单元1102用于执行图6所示的实施例中的步骤601。接收单元1101用于执行图6所示的实施例中的步骤603,
可选的,发送单元1102还用于执行图6所示的实施例中的步骤604。
例如,接收单元1101用于执行图4A所示的实施例中的步骤402,发送单元1102用于执行图4A所示的实施例中的步骤403。
可选的,发送单元1102还用于执行图4A所示的实施例中的步骤402b。
可选的,处理单元1103还用于执行图4A所示的实施例中的步骤403a。
例如,接收单元1101用于执行图6所示的实施例中的步骤602,发送单元1102用于执行图6所示的实施例中的步骤603。
可选的,发送单元1102还用于执行图6所示的实施例中的步骤602b。
可选的,处理单元1103还用于执行图4A所示的实施例中的步骤603a。
例如,发送单元1102用于执行图10所示的实施例中的步骤1002,接收单元1101用于执行图10所示的实施例中的步骤1003。
可选的,处理单元1103用于执行图10所示的实施例中的步骤1004,发送单元1102用于执行图10所示的实施例中的步骤1005。
下面对本申请实施例提供的一种通信装置进行描述。请参阅图12,本申请实施例通信装置1200的一种结构示意图。通信装置1200包括接收单元1201和处理单元1202。可选的,通信装置1200还包括发送单元1203。
当通信装置1200为终端设备,或终端设备内的芯片时,通信装置1200可以用于图7A、图7H、图8和图9所示的实施例中终端设备执行的部分或全部步骤。具体请参阅图7A、图7H、图8和图9所示的实施例的相关介绍,这里不再赘述。
例如,接收单元1201用于执行图7A所示的实施例中的步骤701和步骤702,处理单元1202用于执行图7A所示的实施例中的步骤703。
可选的,发送单元1203用于执行图7A所示的实施例中的步骤702a,接收单元1201用于执行图7A所示的实施例中的步骤702b和步骤702c。
可选的,处理单元1202还用于执行图7A所示的实施例中的步骤704a和步骤704。
可选的,处理单元1202还用于执行图7H所示的实施例中步骤7041至步骤7045。
例如,接收单元1201用于执行图8所示的实施例中的步骤801和步骤802,处理单元1202用于执行图8所示的实施例中的步骤803。
可选的,发送单元1203用于执行图8所示的实施例中的步骤802a,接收单元1201用于执行图8所示的实施例中的步骤802b和步骤802c。
可选的,处理单元1202还用于执行图8所示的实施例中的步骤804a和步骤804。
例如,接收单元1201用于执行图9所示的实施例中的步骤901和步骤902,处理单元1202用于执行图9所示的实施例中的步骤903。
可选的,发送单元1203用于执行图9所示的实施例中的步骤902a,接收单元1201用于执行图9所示的实施例中的步骤902b和步骤902c。
可选的,处理单元1202还用于执行图9所示的实施例中的步骤904a和步骤904。
下面对本申请实施例提供的一种通信装置进行描述。请参阅图13,本申请实施例通信装置1300的一种结构示意图。通信装置1300包括发送单元1301。可选的,通信装置1300还包括接收单元1302。
当通信装置1300为接入网设备,或接入网设备内的芯片时,通信装置1300可以用于图7A所示的实施例中第二接入网设备执行的部分或全部步骤。通信装置1300可以用于执行图8所示的实施例中的接入网设备执行的部分或全部步骤。通信装置1300可以用于执行图9所示的实施例中的第二小区执行的部分或全部步骤。具体请参阅前述图7A、图8和图9所示的实施例中的相关介绍。
例如,发送单元1301用于执行图7A所示的实施例中的步骤702。
可选的,接收单元1302用于执行图7A所示的实施例中的步骤702a。发送单元1301用于执行图7A所示的实施例中的步骤702b和步骤702c。
例如,发送单元1301用于执行图8所示的实施例中的步骤802。
可选的,接收单元1302用于执行图8所示的实施例中的步骤802a。发送单元1301用于执行图8所示的实施例中的步骤802b。
例如,发送单元1301用于执行图9所示的实施例中的步骤802。
可选的,接收单元1302用于执行图9所示的实施例中的步骤902a。发送单元1301用于执行图9所示的实施例中的步骤902b。
本申请还提供一种通信装置,请参阅图14,本申请实施例中通信装置1400的另一个结构示意图。
通信装置1400包括:处理器1401、存储器1402和收发器1403。
处理器1401、存储器1402和收发器1403分别通过总线相连,存储器中存储有计算机指令。
当通信装置1400为接入网设备,或接入网设备内的芯片时,通信装置1400可以用于执行图2A所示的实施例中接入网设备执行的步骤。通信装置1400可以用于执行图3所示的实施例中第一小区执行的步骤;通信装置1400可以用于执行图4A、图5B、图6和图10所示的实施例中第一接入网设备或第二接入网设备执行的步骤;通信装置1400可以用于执行图7A所示的实施例中第二接入网设备执行的步骤;通信装置1400可以用于执行图8所示的实施例中的接入网设备执行的步骤;通信装置1400可以用于执行图10所示的实施例中的第二接入网设备执行的步骤。具体可以参考上述方法实施例中的相关描述。
前述图11所示的发送单元1102和接收单元1101则具体可以是收发器1403,因此,收发器1403的具体实现不再赘述。前述图11所示的处理单元1103则具体可以是处理器1401,因此,处理器1401的具体实现不再赘述。
前述图13所示的发送单元1301和接收单元1302则具体可以是收发器1403,因此,收发器1403的具体实现不再赘述。
下面通过图15示出终端设备的一种可能的结构示意图。
图15示出了一种简化的终端设备的结构示意图。为了便于理解和图示方式,图15中,终端设备以手机作为例子。如图15所示,终端设备包括处理器、存储器、射频电路、天线及输入输出装置。
处理器主要用于对通信协议以及通信数据进行处理,以及对终端设备进行控制,执行软件程序,处理软件程序的数据等。
存储器主要用于存储软件程序和数据。
射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。
天线主要用于收发电磁波形式的射频信号。
输入输出装置,例如触摸屏、显示屏,键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是,有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时,处理器对待发送的数据进行基带处理后,输出基带信号至射频电路,射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时,射频电路通过天线接收到射频信号,将射频信号转换为基带信号,并将基带信号输出至处理器,处理器将基带信号转换为数据并对数据进行处理。
为便于说明,图15中仅示出了一个存储器和处理器。在实际的终端设备产品中,可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置,也可以是与处理器集成在一起,本申请实施例对此不做 限制。
在本申请实施例中,可以将具有收发功能的天线和射频电路视为终端设备的收发单元,将具有处理功能的处理器视为终端设备的处理单元。如图15所示,终端设备包括收发单元1510和处理单元1520。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器,处理单板,处理模块、处理装置等。
可选的,可以将收发单元1510中用于实现接收功能的器件视为接收单元,将收发单元1510中用于实现发送功能的器件视为发送单元,即收发单元1510包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
应理解,收发单元1510用于执行上述方法实施例中终端设备的发送操作和接收操作,处理单元1520用于执行上述方法实施例中终端设备上除了收发操作之外的其他操作。
当终端设备为芯片时,芯片包括收发单元和处理单元。其中,收发单元可以是输入输出电路或通信接口;处理单元为芯片上集成的处理器或者微处理器或者集成电路或者逻辑电路。上述方法实施例中,发送操作对应输入输出电路的输出,接收操作对应输入输出电路的输入。
本申请实施例还提供一种通信系统。请参阅图16,图16为本申请实施例通信系统的一个示意图。通信系统包括第一接入网设备和第二接入网设备。第一接入网设备用于执行图4A、图7A和图10所示的实施例中的第一接入网设备执行的全部或部分步骤。第二接入网设备用于执行图4A、图7A和图10所示的实施例中第二接入网设备执行的全部或部分步骤。
本申请实施例还提供一种包括计算机指令的计算机程序产品,当其在计算机上运行时,使得计算机执行如上述图2A、图3、图4A、图5B、图6、图7A、图7H、图8、图9和图10所示的实施例的通信方法。
本申请实施例还提供了一种计算机可读存储介质,包括计算机指令,当计算机指令在计算机上运行时,使得计算机执行如上述图2A、图3、图4A、图5B、图6、图7A、图7H、图8、图9和图10所示的实施例的通信方法。
本申请实施例还提供一种芯片装置,包括处理器,用于调用存储器中存储的计算机程序或计算机指令,以使得处理器执行上述图2A、图3、图4A、图5B、图6、图7A、图7H、图8、图9和图10所示的实施例的通信方法。
可选的,处理器通过接口与存储器耦合。
可选的,芯片装置还包括存储器,存储器中存储有计算机程序或计算机指令。
上述任一处提到的处理器,可以是一个通用中央处理器,微处理器,特定应用集成电路(application-specific integrated circuit,ASIC),或一个或多个用于控制上述图2A、图3、图4A、图5B、图6、图7A、图7H、图8、图9和图10所示的实施例的通信方法的程序执行的集成电路。
上述任一处提到的存储器可以为只读存储器(read-only memory,ROM)或可存储静态 信息和指令的其他类型的静态存储设备,随机存取存储器(random access memory,RAM)等。
另外需说明的是,以上所描述的装置实施例仅仅是示意性的,其中作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。另外,本申请提供的装置实施例附图中,模块之间的连接关系表示它们之间具有通信连接,具体可以实现为一条或多条通信总线或信号线。
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到本申请可借助软件加必需的通用硬件的方式来实现,当然也可以通过专用硬件包括专用集成电路、专用CPU、专用存储器、专用元器件等来实现。一般情况下,凡由计算机程序完成的功能都可以很容易地用相应的硬件来实现,而且,用来实现同一功能的具体硬件结构也可以是多种多样的,例如模拟电路、数字电路或专用电路等。但是,对本申请而言更多情况下软件程序实现是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,计算机软件产品存储在可读取的存储介质中,如计算机的软盘、U盘、移动硬盘、ROM、RAM、磁碟或者光盘等,包括若干指令用以使得一台计算机设备执行本申请各个实施例的方法。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。
计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时,全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一计算机可读存储介质传输,例如,计算机指令可以从一个网站站点、计算机、网络设备、或本地计算设备、计算设备或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、网络设备、或本地计算设备、计算设备或数据中心进行传输。计算机可读存储介质可以是计算机能够存储的任何可用介质或者是包含一个或多个可用介质集成的网络设备、或本地计算设备、数据中心等数据存储设备。可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘(Solid State Disk,SSD))等。
应理解,说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此,在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外,这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及 算法步骤,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为了描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应理解到,所揭露的系统,装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者技术方案的全部或部分可以以软件产品的形式体现出来,计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例方法的全部或部分步骤。
总之,以上所述仅为本申请技术方案的较佳实施例而已,并非用于限定本申请的保护范围。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (28)

  1. 一种通信方法,其特征在于,所述方法包括:
    终端设备接收来自第一小区的参考信号,所述参考信号占用的时域资源少于所述第一小区的同步信号块SSB和所述第一小区的系统信息SI占用的时域资源总和;
    所述终端设备向所述第一小区发送唤醒信号WUS,所述唤醒信号用于唤醒所述第一小区发送所述SSB和/或所述SI。
  2. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    所述终端设备根据所述参考信号确定所述第一小区。
  3. 根据权利要求1或2所述的方法,其特征在于,所述参考信号包括以下至少一项信息:
    所述第一小区的标识、所述参考信号所在的系统帧号、半帧指示、所述参考信号的索引、所述参考信号的波束索引、所述唤醒信号的发送时频资源、所述唤醒信号所用的伪随机序列的特征参数、或者所述终端设备发送所述唤醒信号的条件、寻呼指示、系统信息编号。
  4. 根据权利要求1至3中任一项所述的方法,其特征在于,所述终端设备向所述第一小区发送唤醒信号,包括:
    当满足第一条件时,所述终端设备向所述第一小区发送所述唤醒信号;
    所述第一条件包括以下至少一项:所述终端设备确定驻留或接入所述第一小区;所述参考信号的接收功率大于门限值;或者,所述参考信号为所述终端设备接收到一个或多个小区分别对应的参考信号中接收功率最大的参考信号;或者,所述参考信号包含寻呼指示;所述参考信号包含的系统信息编号发生变化。
  5. 根据权利要求1至4中任一项所述的方法,其特征在于,所述参考信号包括所述唤醒信号的发送时频资源和所述唤醒信号所用的伪随机序列的特征参数;所述方法还包括:
    所述终端设备根据所述唤醒信号所用的伪随机序列的特征参数生成所述唤醒信号;
    所述终端设备向所述第一小区发送唤醒信号,包括:
    所述终端设备在所述发送时频资源上向所述第一小区发送所述唤醒信号。
  6. 根据权利要求1至5中任一项所述的方法,其特征在于,所述唤醒信号包括用于唤醒所述第一小区发送所述SSB和/或所述SI的前导码。
  7. 一种通信方法,其特征在于,所述方法包括:
    接入网设备向终端设备发送参考信号,所述接入网设备为第一小区所属的接入网设备,所述参考信号占用的时域资源少于所述第一小区的同步信号块SSB和所述第一小区的系统信息SI占用的时域资源总和;
    所述接入网设备接收来自所述终端设备的唤醒信号WUS,所述唤醒信号用于唤醒所述接入网设备在所述第一小区发送所述SSB和/或所述SI。
  8. 根据权利要求7所述的方法,其特征在于,所述参考信号包括以下至少一项信息:
    所述第一小区的标识、所述参考信号所在的系统帧号、半帧指示、所述参考信号的索引、所述参考信号的波束索引、所述唤醒信号的发送时频资源、所述唤醒信号所用的伪随 机序列的特征参数、或者所述终端设备发送所述唤醒信号的条件、寻呼指示、系统信息编号。
  9. 根据权利要求7或8所述的方法,其特征在于,所述方法还包括:
    所述接入网设备向所述终端设备发送所述SSB和/或所述SI。
  10. 根据权利要求9所述的方法,其特征在于,所述方法还包括:
    所述接入网设备判断是否开启在所述第一小区广播所述SSB和/或所述SI;
    若是,则所述接入网设备执行所述接入网设备向所述终端设备发送所述SSB和/或所述SI的步骤。
  11. 根据权利要求10所述的方法,其特征在于,所述接入网设备判断是否开启在所述第一小区广播所述SSB和/或所述SI,包括:
    所述接入网设备根据第一信息判断是否开启在所述第一小区广播所述SSB和/或所述SI;
    所述第一信息包括以下至少一项:所述第一小区的负载、所述第一小区的邻居小区的负载、或者所述参考信号的接收功率。
  12. 根据权利要求7至11中任一项所述的方法,其特征在于,所述参考信号包括所述唤醒信号的发送时频资源和所述唤醒信号所用的伪随机序列的特征参数;所述方法还包括:
    所述接入网设备在所述发送时频资源上接收来自所述终端设备的所述唤醒信号;
    所述接入网设备根据所述唤醒信号所用的伪随机序列的特征参数确定所述唤醒信号。
  13. 根据权利要求7至12中任一项所述的方法,其特征在于,所述唤醒信号包括用于唤醒所述第一小区发送所述SSB和/或所述SI的前导码。
  14. 一种通信装置,其特征在于,所述通信装置包括:
    接收单元,用于接收来自第一小区的参考信号,所述参考信号占用的时域资源少于所述第一小区的同步信号块SSB和所述第一小区的系统信息SI占用的时域资源总和;
    发送单元,用于向所述第一小区发送唤醒信号WUS,所述唤醒信号用于唤醒所述第一小区发送所述SSB和/或所述SI。
  15. 根据权利要求14所述的通信装置,其特征在于,所述通信装置还包括处理单元;
    处理单元,用于根据所述参考信号确定所述第一小区。
  16. 根据权利要求14或15所述的通信装置,其特征在于,所述参考信号包括以下至少一项信息:
    所述第一小区的标识、所述参考信号所在的系统帧号、半帧指示、所述参考信号的索引、所述参考信号的波束索引、所述唤醒信号的发送时频资源、所述唤醒信号所用的伪随机序列的特征参数、或者所述通信装置发送所述唤醒信号的条件。
  17. 根据权利要求14至16中任一项所述的通信装置,其特征在于,所述发送单元具体用于:
    当满足第一条件时,向所述第一小区发送所述唤醒信号;
    所述第一条件包括以下至少一项:所述通信装置确定驻留或接入所述第一小区;所述参考信号的接收功率大于门限值;或者,所述参考信号为所述通信装置接收到一个或多个 小区分别对应的参考信号中接收功率最大的参考信号。
  18. 根据权利要求14至17中任一项所述的通信装置,其特征在于,所述参考信号包括所述唤醒信号的发送时频资源和所述唤醒信号所用的伪随机序列的特征参数;所述通信装置还包括处理单元;
    所述处理单元,用于根据所述唤醒信号所用的伪随机序列的特征参数生成所述唤醒信号;
    所述发送单元具体用于:
    在所述发送时频资源上向所述第一小区发送所述唤醒信号。
  19. 根据权利要求14至18中任一项所述的通信装置,其特征在于,所述唤醒信号包括用于唤醒所述第一小区发送所述SSB和/或所述SI的前导码。
  20. 一种通信装置,其特征在于,所述通信装置包括:
    发送单元,用于向终端设备发送参考信号,所述通信装置为第一小区所属的接入网设备,所述参考信号占用的时域资源少于所述第一小区的同步信号块SSB和所述第一小区的系统信息SI占用的时域资源总和;
    接收单元,用于接收来自所述终端设备的唤醒信号WUS,所述唤醒信号用于唤醒所述接入网设备在所述第一小区发送所述SSB和/或所述SI。
  21. 根据权利要求20所述的通信装置,其特征在于,所述参考信号包括以下至少一项信息:
    所述第一小区的标识、所述参考信号所在的系统帧号、半帧指示、所述参考信号的索引、所述参考信号的波束索引、所述唤醒信号的发送时频资源、所述唤醒信号所用的伪随机序列的特征参数、或者所述终端设备发送所述唤醒信号的条件、寻呼指示、系统信息编号。
  22. 根据权利要求20或21所述的通信装置,其特征在于,所述发送单元还用于:
    向所述终端设备发送所述SSB和/或所述SI。
  23. 根据权利要求22所述的通信装置,其特征在于,所述通信装置还包括处理单元;
    所述处理单元,用于判断是否开启在所述第一小区广播所述SSB和/或所述SI;若是,则执行所述通信装置向所述终端设备发送所述SSB和/或所述SI的步骤。
  24. 根据权利要求23所述的通信装置,其特征在于,所述处理单元具体用于:
    根据第一信息判断是否开启在所述第一小区广播所述SSB和/或所述SI;
    所述第一信息包括以下至少一项:所述第一小区的负载、所述第一小区的邻居小区的负载、或者所述参考信号的接收功率。
  25. 根据权利要求20至24中任一项所述的通信装置,其特征在于,所述参考信号包括所述唤醒信号的发送时频资源和所述唤醒信号所用的伪随机序列的特征参数;所述通信装置还包括处理单元;
    所述接收单元还用于:
    在所述发送时频资源上接收来自所述终端设备的所述唤醒信号;
    所述处理单元,用于根据所述唤醒信号所用的伪随机序列的特征参数确定所述唤醒信 号。
  26. 根据权利要求20至25中任一项所述的通信装置,其特征在于,所述唤醒信号包括用于唤醒所述第一小区发送所述SSB和/或所述SI的前导码。
  27. 一种通信装置,其特征在于,所述通信装置包括处理器,所述处理器用于调用所述存储器中的计算机程序或计算机指令,使得所述通信装置执行如权利要求1至6中任一项所述的方法;或者,使得所述通信装置执行如权利要求7至13中任一项所述的方法。
  28. 一种计算机可读存储介质,其特征在于,包括计算机指令,当所述计算机指令在计算机上运行时,使得计算机执行如权利要求1至6中任一项所述的方法;或者,使得计算机执行如权利要求7至13中任一项所述的方法。
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