WO2022001338A1 - Cell dormancy control method and apparatus, access network device, and terminal - Google Patents

Abstract

Embodiments of the present application relate to the technical field of communications. Disclosed are a cell dormancy control method and apparatus, an access network device, and a terminal. The method comprises: a first access network device corresponding to a macro-cell receives a load report of at least one second access network device, the second access network device being an access network device corresponding to a micro-cell, and a coverage range of the macro-cell comprising at least one micro-cell; the first access network device determines, according to the load report, a target access network device from the at least one second access network device, the load of the micro-cell corresponding to the target access network device satisfying a low load condition; and the first access network device sends a dormancy instruction to the target access network device, the target access network device being used for entering a dormancy state according to the dormancy instruction. In the embodiments of the present application, the power consumption of the access network device in the state of low load can be reduced by means of a dormancy mechanism, and the service quality of a communication system in a dormancy scene is ensured.

Description

Cell dormancy control method, device, access network equipment and terminal

This application claims the priority of the Chinese patent application with the application number 202010603992.2 and the invention titled "Cell Sleep Control Method, Device, Access Network Equipment and Terminal" filed on June 29, 2020, the entire contents of which are incorporated by reference in this application.

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method, an apparatus, an access network device, and a terminal for controlling cell dormancy.

Background technique

5th Generation mobile networks (5G), as the latest generation of cellular mobile communication technology, mainly work in high frequency bands, so in order to achieve better coverage, beamforming technology is introduced into the 5G system.

After the application of beamforming, the access network equipment needs to perform beam scanning in different directions to achieve 360° full coverage. Correspondingly, the power consumption of the access network equipment in the 5G system is significantly higher than that of other network standards. Therefore, how to reduce the power consumption of access network equipment has become an important direction of current technology research and development.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a cell dormancy control method, device, access network equipment, and terminal. The technical solution is as follows:

On the one hand, an embodiment of the present application provides a cell dormancy control method, the method is used for a first access network device corresponding to a macro cell, and the method includes:

The first access network device receives a load report of at least one second access network device, the second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one one of the microcells;

The first access network device determines, according to the load report, a target access network device from at least one of the second access network devices, where the load of the target access network device corresponding to the micro cell satisfies a low load condition;

The first access network device sends a sleep instruction to the target access network device, and the target access network device is configured to enter a sleep state according to the sleep instruction.

On the other hand, an embodiment of the present application provides a cell dormancy control method, the method is used for a second access network device corresponding to a micro cell, and the method includes:

The second access network device reports a load report to the first access network device, and the first access network device is configured to, according to the load report of at least one of the second access network devices, from at least one of the The second access network device determines a target access network device, and sends a sleep instruction to the target access network device, the first access network device is the access network device corresponding to the macro cell, and the macro cell's The coverage includes at least one of the micro cells, and the load of the micro cell corresponding to the target access network device satisfies the low load condition;

receiving, by the second access network device, the sleep instruction sent by the first access network device;

The second access network device enters a sleep state according to the sleep instruction.

On the other hand, an embodiment of the present application provides a cell dormancy control method, the method is used for a terminal, and the method includes:

the terminal performs cell measurement;

the terminal switches to the target micro cell according to the measurement result, and the target micro cell was previously in a dormant state and exits the dormant state after being activated;

Wherein, the target micro cell is a micro cell corresponding to a target access network device, and the target access network device is a first access network device according to a load report of at least one second access network device, from at least one of the It is determined from the second access network device that the load of the target access network device corresponding to the micro cell satisfies the low load condition, and the target access network device enters the destination network according to the sleep instruction sent by the first access network device. In the sleep state, the first access network device is an access network device corresponding to a macro cell, the second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one of the microcells.

On the other hand, an embodiment of the present application provides an apparatus for controlling cell dormancy, the apparatus is used for a first access network device corresponding to a macro cell, and the apparatus includes:

a load report receiving module, configured to receive a load report of at least one second access network device, where the second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one the microcell;

a determining module, configured to determine, according to the load report, a target access network device from at least one of the second access network devices, where the load of the target access network device corresponding to a micro cell satisfies a low load condition;

The instruction sending module is configured to send a sleep instruction to the target access network device, and the target access network device is configured to enter a sleep state according to the sleep instruction.

On the other hand, an embodiment of the present application provides an apparatus for controlling cell dormancy, the apparatus is used for a second access network device corresponding to a micro cell, and the apparatus includes:

A load report reporting module is configured to report a load report to a first access network device, and the first access network device is configured to report a load report from at least one of the second access network devices according to the load report of at least one of the second access network devices. The access network device determines a target access network device, and sends a sleep instruction to the target access network device, the first access network device is an access network device corresponding to a macro cell, and the macro cell covers The range includes at least one of the micro cells, and the load of the micro cell corresponding to the target access network device satisfies the low load condition;

an instruction receiving module, configured to receive the sleep instruction sent by the first access network device;

A sleep module, configured to enter a sleep state according to the sleep instruction.

On the other hand, an embodiment of the present application provides an apparatus for controlling cell dormancy, the apparatus is used for a terminal, and the apparatus includes:

a measurement module, used for cell measurement;

a switching module, configured to switch to a target micro cell according to the measurement result, the target micro cell was previously in a dormant state, and exits the dormant state after being activated;

Wherein, the target micro cell is a micro cell corresponding to a target access network device, and the target access network device is a first access network device according to a load report of at least one second access network device, from at least one of the It is determined from the second access network device that the load of the target access network device corresponding to the micro cell satisfies the low load condition, and the target access network device enters the destination network according to the sleep instruction sent by the first access network device. In the sleep state, the first access network device is an access network device corresponding to a macro cell, the second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one of the microcells.

On the other hand, an embodiment of the present application provides an access network device, where the access network device includes:

processor;

a transceiver connected to the processor;

memory for storing executable instructions for the processor;

Wherein, the processor is configured to load and execute the executable instructions to implement the cell dormancy control method on the side of the first access network device or the second access network device as in the above aspect.

On the other hand, an embodiment of the present application provides a terminal, where the terminal includes:

processor;

a transceiver connected to the processor;

memory for storing executable instructions for the processor;

Wherein, the processor is configured to load and execute the executable instructions to implement the method for controlling cell dormancy on the terminal side as in the above aspect.

On the other hand, an embodiment of the present application provides a computer-readable storage medium, where executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by the processor to implement the first access A method for controlling cell dormancy on the network side, the device side of the second access network or the terminal side.

In another aspect, a computer program product is also provided, the computer program product stores at least one instruction, and the at least one instruction is loaded and executed by a processor to implement the cell sleep control method described in the above aspect.

Description of drawings

FIG. 1 shows a structural block diagram of a communication system provided by an exemplary embodiment of the present application;

FIG. 2 shows a flowchart of a method for controlling cell dormancy according to an exemplary embodiment of the present application;

FIG. 3 is a schematic diagram of component working conditions of an access network device in a working state and a dormant state according to an exemplary embodiment;

FIG. 4 is a schematic diagram of content sent downlink by an access network device in a working state and a dormant state according to an exemplary embodiment;

FIG. 5 shows a flowchart of a method for controlling cell dormancy according to another exemplary embodiment of the present application;

Fig. 6 is the implementation schematic diagram of the embodiment shown in Fig. 5;

FIG. 7 shows a flowchart of a method for controlling cell dormancy according to another exemplary embodiment of the present application;

Fig. 8 is the implementation schematic diagram of the embodiment shown in Fig. 7;

FIG. 9 shows a flowchart of a method for controlling cell dormancy according to another exemplary embodiment of the present application;

Fig. 10 is the implementation schematic diagram of the embodiment shown in Fig. 9;

FIG. 11 shows a structural block diagram of an apparatus for controlling cell dormancy provided by an exemplary embodiment of the present application;

FIG. 12 shows a structural block diagram of an apparatus for controlling cell dormancy provided by another exemplary embodiment of the present application;

FIG. 13 shows a structural block diagram of an apparatus for controlling cell dormancy provided by another exemplary embodiment of the present application;

FIG. 14 shows a schematic structural diagram of an access network device provided by an exemplary embodiment of the present application;

FIG. 15 shows a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application.

detailed description

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

As used herein, "plurality" refers to two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects are an "or" relationship.

Please refer to FIG. 1 , which shows a structural block diagram of a communication system provided by an exemplary embodiment of the present application. The communication system may include: an access network 110 and a terminal 130 .

The access network 110 includes several network devices. The network device may be a base station, which is a device deployed in an access network to provide a wireless communication function for a terminal. The base station may include various forms of macro base station, micro base station, relay station, access point and so on. In systems using different radio access technologies, the names of devices with base station functions may be different. For example, in Long Term Evolution (LTE) systems, they are called eNodeBs or eNBs; in 5G NR systems , called gNodeB or gNB. As communication technology evolves, the description of "base station" may change. For the convenience of description in the embodiments of the present disclosure, the above-mentioned apparatuses for providing a wireless communication function for the terminal 130 are collectively referred to as network devices.

The access network 110 involved in the embodiments of this application includes a first access network device 111 and a second access network device 112 . The first access network device 111 is an access network device corresponding to a macro cell, and the second access network device 112 is an access network device corresponding to a micro cell within the coverage of the macro cell.

In some embodiments, the working frequency band corresponding to the first access network device 111 is lower than the working frequency band corresponding to the second access network device 112 , so the coverage of the first access network device 111 is larger than that of the second access network device 112 Correspondingly, the macro cell is used to provide basic coverage of the wide area, while the micro cell is used to provide higher integration and better coverage.

Illustratively, as shown in FIG. 1 , the first access network device 111 is a macro base station located in a certain area, and the coverage of the macro base station includes residential quarters, schools, shopping malls and office buildings. In order to provide higher system capacity and better coverage, second access network devices 112 (such as micro base stations) are respectively set in residential areas, schools, shopping malls and office buildings, and the micro cells corresponding to the second access network devices 112 are located in within the coverage of the macro cell.

Optionally, data and signaling are transmitted between the first access network device 111 and each second access network device 112 through an X2 interface.

The terminal 130 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to the wireless modem, as well as various forms of user equipment, mobile stations (Mobile Station, MS), Terminal (terminal device) and so on. For the convenience of description, the devices mentioned above are collectively referred to as terminals. The network device and the terminal 130 communicate with each other through a certain air interface technology, such as a Uu interface.

For places such as shopping malls, schools, and office buildings, the load of the access network equipment installed in such places varies greatly in different time periods (usually, the load is high during the day and the load is low at night). If the access network equipment installed in such places still maintains normal power consumption in different time periods, it will cause a great waste of resources. With the solution provided by the embodiment of the present application, a micro cell within the coverage of the macro cell will report a load report to the macro cell, and the macro cell will comprehensively consider the load situation of each cell within the coverage area according to the load report reported by at least one micro cell , determine the target micro cell that meets the low load condition, and send a sleep instruction to the target micro cell, instructing the target micro cell to go into a sleep state, thereby reducing the power consumption of the low load cell.

For example, during the day, the access network devices set up in schools, shopping malls, office buildings and residential areas are all in working mode; while at night, the macro cells receive the load reports reported by the corresponding micro cells in schools, shopping malls and office buildings, and according to the load The report determines that the micro-cell meets the low-load condition, so that a sleep instruction is issued to the micro-cell so that the micro-cell can enter a sleep state and reduce the power consumption of access network equipment set up in schools, shopping malls, and office buildings. The service originally carried by the micro cell in the dormant state may be served by the micro cell or the macro cell in the working mode.

In addition, the terminal 130 can still perform coarse synchronization on the dormant micro cell, so that when cell reselection or cell handover needs to be performed, the micro cell in the dormant state can be activated according to the measurement result to enter the working mode to provide the terminal 130 with Serve.

The cell dormancy control methods provided in the following various embodiments are used in the communication system shown in FIG. 1 .

Please refer to FIG. 2 , which shows a flowchart of a method for controlling cell dormancy according to an exemplary embodiment of the present application. The method includes:

Step 201, the second access network device reports a load report to the first access network device.

The first access network device is an access network device corresponding to a macro cell, the second access network device is an access network device corresponding to a micro cell, the coverage of the macro cell includes at least one micro cell, and the second access network device is an access network device corresponding to a micro cell. The network access device reports a load report to the first access network device through the X2 interface.

Optionally, the load report includes other data that can be used to measure cell load, such as the load ratio or the data volume of downlink data packets within a predetermined time period. The embodiment of the present application does not limit the specific data content included in the load report.

In a possible implementation manner, the second access network device corresponding to each micro cell reports a load report to the first access network device every predetermined time interval.

In another possible implementation manner, in order to reduce unnecessary signaling and data interaction, when the load of the micro cell satisfies the load reporting condition, the micro cell performs load report reporting. If the load of the micro cell does not meet the load reporting conditions, the micro cell only performs load detection without reporting the load.

Optionally, the load reporting conditions include: the load of the micro cell is less than the load threshold and reaches a preset time period, that is, when the micro cell is in a low load state for a long time, a load report is triggered. For example, the preset duration may be 30 minutes, which is not limited in this embodiment.

Step 202: The first access network device receives a load report of at least one second access network device.

Optionally, the first access network device receives the load report reported by the second access network device through the X2 interface.

Step 203: The first access network device determines a target access network device from at least one second access network device according to the load report, and the load of the microcell corresponding to the target access network device satisfies the low load condition.

In this embodiment, the first access network device selects a micro cell that satisfies the low load condition as the target micro cell according to the received load reports, and correspondingly, the second access network device corresponding to the target micro cell is the target micro cell access network equipment.

In order to improve the stability of the service provided by the communication system and avoid the situation that the terminal drops the call or the network, the first access network device does not determine the second access network device when the load of the second access network device is low. For the target access network device, it needs to comprehensively consider the current load situation of itself and other access network devices. In a possible implementation manner, the first access network device determines the target micro cell according to the load conditions of itself and other second access network devices and in combination with the load report. Optionally, the load of the target micro cell that satisfies the low load condition can be carried by other cells (including macro cells and neighboring micro cells), so as to prevent the terminal originally served by the micro cell from dropping calls or dropping out after the micro cell enters the sleep state. network.

Step 204, the first access network device sends a sleep instruction to the target access network device.

Optionally, the first access network device sends a sleep instruction to the target access network device through the X2 interface. The instruction format of the sleep instruction may be predetermined, which is not limited in this implementation.

Step 205: The second access network device receives the sleep instruction sent by the first access network device.

Step 206, the second access network device enters a sleep state according to the sleep instruction.

After receiving the sleep instruction, the second access network device (ie, the target access network device) enters a sleep state to achieve the effect of reducing power consumption.

In one possible implementation, the sleep state is different from the off state. Although the off state can reduce power consumption to the greatest extent, it will take a long time for the terminal to re-search the network after the cell is closed and restarted, resulting in a large delay when the terminal obtains the service. Therefore, in the embodiment of the present application, the target access network The device still needs to maintain the necessary signal transmission in the sleep state.

To sum up, in this embodiment of the present application, a micro cell located within the coverage of a macro cell reports a load report to the macro cell, and the macro cell selects the load satisfying the low load from the micro cells that report the load report according to the load report. The micro cell that meets the conditions, and sends a sleep instruction to the access network device corresponding to the micro cell, so that the micro cell enters the sleep state, thereby reducing the power consumption of the access network device in the low load state; at the same time, the sleep state of the micro cell is determined by The macro cell is controlled according to the load of other micro cells within the coverage area, which reduces the probability of the terminal dropping the network or the call when the micro cell performs sleep control according to its own load, and ensures the service quality of the communication system in the sleep scenario.

Optionally, the low load condition includes at least one of the following: the load headroom of the macro cell is greater than the load of the micro cell, and there is a load headroom of at least one adjacent micro cell that is larger than the load of the micro cell.

Optionally, after the first access network device sends a sleep instruction to the target access network device, the method further includes:

The first access network device receives the first handover request sent by the target access network device, where the first handover request is used to request to switch the load of the micro cell to the macro cell or the adjacent micro cell.

Optionally, in the sleep state, the target access network device continues to send downlink synchronization signals and stops sending broadcast messages, and the downlink synchronization signals are used for terminal synchronization.

Optionally, the downlink synchronization signal includes PSS or SSS;

Broadcast messages include MIBs and SIBs.

Optionally, after sending the sleep instruction to the target access network device, the method further includes:

The first access network device receives the cell measurement report reported by the terminal in the connected state, where the cell measurement report includes cell measurement information of at least one neighboring cell, and the at least one neighboring cell includes at least one dormant micro cell;

The first access network device determines a target micro cell from at least one dormant micro cell;

The first access network device sends a second handover request to the target micro cell corresponding to the second access network device, where the second handover request includes an activation instruction, and the activation instruction is used to instruct the target micro cell to exit the dormant state.

Optionally, the load report is reported when the load of the second access network device in the micro cell is less than the load threshold and reaches a preset time period.

Optionally, before the second access network device enters the sleep state according to the sleep instruction, the method further includes:

The second access network device sends a first handover request to the first access network device, where the first handover request is used to request to switch the load of the micro cell to the macro cell or the adjacent micro cell;

The second access network device enters the sleep state according to the sleep instruction, including:

In response to completing the load switching, the second access network device enters a sleep state according to the sleep instruction.

Optionally, the method further includes:

The second access network device receives the second handover request sent by the other access network device, the other access network device is the first access network device or other second access network device, and the second handover request is the other access network device Sent according to the cell measurement report reported by the connected state terminal, the second handover request includes an activation instruction, and the activation instruction is used to instruct the target dormant micro cell to exit the dormant state;

The second access network device exits the sleep state according to the activation instruction.

Optionally, the method further includes:

The second access network device receives an uplink knock signal sent by the idle state terminal, and the uplink knock signal is used to instruct the second access network device to exit the dormant state;

The second access network device exits the dormant state according to the uplink knock signal;

The second access network device sends a broadcast message, and the idle state terminal is used to perform cell reselection according to the broadcast message.

Optionally, after exiting the dormant state according to the uplink knock signal, the method further includes:

The second access network device sends a dormancy exit notification to the mobility management function AMF entity, and the AMF entity is configured to add the micro cell corresponding to the second access network device to the paging domain according to the dormancy exit notification.

Optionally, after the terminal is in a connected state and cell measurement is performed, the method further includes:

The terminal reports a cell measurement report to the access network device corresponding to the serving cell according to the measurement result. The cell measurement report includes cell measurement information of at least one neighboring cell, and the access network device corresponding to the serving cell is used to determine the target microcell from at least one sleeping microcell. and send a second handover request to the second access network device corresponding to the target micro cell, where the second handover request includes an activation instruction, and the activation instruction is used to instruct the target micro cell to exit the dormant state.

Optionally, after the terminal is in an idle state and cell measurement is performed, the method further includes:

In response to the measurement result indicating that there is no non-sleep micro cell that complies with the S criterion, and that there is a dormant micro cell that complies with the S criterion, the terminal determines the target micro cell from the dormant micro cell according to the reference signal received power RSRP of the dormant micro cell;

The terminal sends an uplink knock signal to the second access network device corresponding to the target micro cell, and the uplink knock signal is used to instruct the second access network device corresponding to the target micro cell to exit the sleep state, and after exiting the sleep state, the target micro cell The corresponding second access network device continues to send the broadcast message;

In response to the broadcast message of the target micro cell, stop sending the uplink knock signal.

In a possible implementation manner, in the dormant state, the target access network device continues to send downlink synchronization signals and stops sending broadcast messages, so that the terminal can perform rough synchronization on the micro cells in the dormant state according to the downlink synchronization signals.

In a schematic example, taking the access network equipment in the 5G system as an example, as shown in Figure 3, in the working state, the Active Antenna Unit 31 (Active Antenna Unit, AAU) in the access network equipment and distribution The unit 32 (Distribute Unit, DU) is in the working state; in the dormant state, the AAU31 of the access network device enters the low power mode (low power mode), and the DU enters the sleep mode (Sleep mode).

Correspondingly, as shown in Figure 4, in the working state, the access network equipment needs to send the Primary Synchronization Signal (PSS)/Secondary Synchronization Signal (SSS), the Master Information Block (MIB) ) and system information block 1 (System Information Block1, SIB1); while in the dormant state, the access network device stops sending MIB and SIB1 (that is, stops sending broadcast messages), and only sends PSS/SSS.

Analyze the air interface radiation power consumption of the AAU, assuming that the power consumption of the resource unit (Resource Element, RE) of the synchronization signal and the PBCH signal block (Synchronization Signal and PBCH Block, SSB) is the same as the power of SIB1, calculate the power consumption of MIB and SIB1. The consumption is: 127*2*4/((127+3*12*20)*4+14*24*12)=1016/(3388+4032)=14%. If the power consumption saved by the SIB is further included, the power consumption of the sleep state AAU will be reduced by 86%.

Further, it is assumed that the power consumption of the access network equipment in the 4G system is 1, the original power consumption of the access network equipment in the 5G system is 3, the AAU power consumption accounts for 80%, and the DU power consumption accounts for 20%. Using the above sleep mechanism, the power consumption of the DU is reduced to 0, the power consumption of the AAU is reduced to 80% × 15% = 12%, and the overall power consumption of the access network equipment in the 5G system is reduced to 0.36.

In order to ensure that the original load of the target micro cell can be carried by other cells after the target micro cell is in the dormant state, so as to avoid the problem of terminal call drop or network drop, in a possible implementation, the target access network equipment needs to The satisfied low load conditions include at least one of the following: 1. The load headroom of the macro cell is larger than the load of the micro cell; 2. The load headroom of at least one adjacent micro cell is larger than the load of the micro cell.

Optionally, after receiving the load report, the first access network device determines the load of the current micro cell, and further detects whether the load vacancy of its own macro cell is greater than the load of the current micro cell. If it is greater than that, it indicates that the load of the current micro cell can be carried by the macro cell, so that it is determined that the current micro cell meets the low load condition; if it is smaller than that, it indicates that the load of the current micro cell cannot be fully carried by the macro cell, so it is determined that the current micro cell does not meet the low load condition. condition.

Optionally, after receiving the load report, the first access network device determines the load of the current micro cell, and detects whether there is a load report reported by the current micro cell corresponding to the neighboring micro cell; if there is, the first access network device further According to the load report of the adjacent microcell, it is detected whether the adjacent microcell can carry the load of the current microcell. If it can, it is determined that the current microcell meets the low load condition; if it cannot carry or there is no load reported by the adjacent microcell report, it is determined that the current micro cell does not meet the low load condition.

In some embodiments, when the target micro cell that satisfies the low load condition has a load, the target micro cell also needs to reconfigure the camped or served terminal to the macro cell or a neighboring micro cell. The target micro cell may switch the terminal to the designated cell through a connected state handover process, or, by releasing the connection, and redirect the terminal to the designated cell. The following is a schematic illustration by taking the target micro cell reconfiguring the terminal to the macro cell as an example.

Please refer to FIG. 5 , which shows a flowchart of a method for controlling cell dormancy according to another exemplary embodiment of the present application. The method includes:

Step 501, when the load of the micro cell is less than the load threshold and reaches a preset time period, the second access network device reports a load report to the first access network device.

In order to prevent the second access network device from frequently reporting invalid load reports to the first access network device, resulting in excessive processing pressure on the first access network device, in this embodiment, when the load of the second access network device is less than the load threshold, The load report will be triggered only when the preset duration is reached (the microcell needs to sleep at this time); if the load is greater than the load threshold, or the low-load duration does not reach the preset duration (the microcell does not need to sleep at this time), the first The second access network device will not report the load report.

Step 502: The first access network device receives a load report reported by at least one second access network device.

Step 503, the first access network device determines a target access network device from at least one second access network device according to the load report, and the load of the target access network device corresponding to the micro cell satisfies the low load condition.

In this embodiment, the load headroom of the macro cell is greater than the load of the micro cell corresponding to the second access network device, and accordingly, the load of the second access network device corresponding to the micro cell will be transferred to the macro cell.

Step 504, the first access network device sends a sleep instruction to the target access network device.

Step 505, the second access network device receives the sleep instruction sent by the first access network device.

For the implementation of the foregoing steps 502 to 505, reference may be made to the foregoing embodiment, and details are not described herein again in this embodiment.

Step 506, the second access network device sends a first handover request to the first access network device, where the first handover request is used to request to switch the load of the micro cell to the macro cell or the neighboring micro cell.

When receiving the sleep instruction sent by the first access network device and the target micro cell still has a load, the second access network device sends a first handover request to the first access network device to trigger the camping terminal or the serving terminal redirection. Since the macro cell knows the load situation of the micro cells within the coverage area, after receiving the first handover request, the first access network device determines to hand over the terminal to the macro cell or to the corresponding micro cell according to the load situation of the macro cell and each adjacent micro cell. Neighboring microcells.

Step 507: The first access network device receives the first handover request sent by the target access network device.

Step 508, the first access network device sends a first handover response to the target access network device.

In a possible implementation manner, since the load of the cell may change, after receiving the first handover request, the first access network device detects whether the load vacancy of the current macro cell is greater than the load of the target micro cell, and when it is greater than the load of the target micro cell At the time, a first handover response is sent to the target access network device, where the first handover response is used to instruct the terminal to be handed over to the macro cell.

In another possible implementation manner, after receiving the first handover request, the first access network device detects whether there is a load vacancy of the adjacent micro cell that is greater than the load of the target micro cell, and if so, accesses the target The network device sends a first handover response, where the first handover response is used to instruct the terminal to be handed over to a neighboring micro cell.

Step 509, in response to the first handover response sent by the first access network device, the second access network device performs radio resource control (Radio Resource Control, RRC) reconfiguration on the terminal.

In a possible implementation manner, after receiving the first handover response sent by the first access network device, the second access network device sends an RRC reconfiguration message to the terminal; the terminal reconfigures the RRC reconfiguration message according to the received RRC reconfiguration message. An RRC connection is configured, and after the RRC reconfiguration is completed, an RRC reconfiguration complete message is sent to the first access network device. This embodiment of the present application does not limit the process of performing RRC reconfiguration on the terminal.

Step 510, in response to completing the load switching, the second access network device enters a sleep state according to the sleep instruction.

Since the micro cell corresponding to the second access network device has no load after the RRC reconfiguration is completed (ie, the load switching is completed), the second access network device enters the sleep state according to the sleep instruction, thereby reducing the power consumption of the device.

In an illustrative example, as shown in FIG. 6 , the micro base station 61 provides services for the terminal 61 . Since the load of the micro base station 61 within the predetermined time period is less than the load threshold, the micro base station 61 reports a load report to the macro base station 63 . The macro base station 63 determines that the micro base station 61 satisfies the low load condition according to the received load report, so as to issue a sleep instruction to the micro base station 61 . After receiving the sleep instruction, the micro base station 61 sends an RRC reconfiguration message to the terminal 62, switches the terminal 62 to the macro cell corresponding to the macro base station 63, and enters the sleep state after completing the RRC reconfiguration.

In this embodiment, after receiving the dormancy instruction sent by the macro cell, the micro cell requests to switch the load to the macro cell or the adjacent micro cell by sending a handover request to the macro cell, and after completing the load handover, the micro cell enters a dormant state to avoid The terminal originally served by the micro cell has the problem of dropped calls and dropped the network, which provides the stability of the service provided by the communication system.

In each of the above embodiments, the process in which the macro cell controls the micro cell to enter the sleep state has been described. In a practical application scenario, when a terminal in a cell performs cell reselection or cell handover, it may be necessary to activate a micro cell in a dormant state so as to provide services through the activated micro cell. In a possible implementation manner, the terminal performs cell measurement, and activates the handover to the target micro cell according to the measurement result. The target micro cell was previously in a dormant state and exits the dormant state after being activated. Illustrative embodiments are used below to activate the dormant cell activation process in the two scenarios of cell reselection and cell handover.

Please refer to FIG. 7 , which shows a flowchart of a method for controlling cell dormancy according to another exemplary embodiment of the present application. The method includes:

Step 701, the terminal performs cell measurement.

In this embodiment, a terminal in an idle state (idle) or an inactive state (inactive) needs to measure intra-frequency and inter-frequency neighboring cells. Moreover, since the second access network device in the dormant state will still continue to send the downlink synchronization signal, the terminal can perform coarse synchronization according to the downlink synchronization signal, so as to perform cell measurement after completing the coarse synchronization.

Correspondingly, the measurement result obtained by the terminal performing the cell measurement includes not only the cell measurement result of the cell in the working state, but also the cell measurement result of the dormant cell. The measurement result includes the reference signal received power (Reference Signal Receiving Power, RSRP) of the cell.

Step 702, in response to the measurement result indicating that there is no non-sleep micro cell that meets the S criterion, and that there is a sleeping micro cell that meets the S criterion, the terminal determines the target micro cell from the sleeping micro cells according to the RSRP of the sleeping micro cell.

In a possible implementation manner, for the obtained measurement results, the terminal first divides the measurement results into measurement results corresponding to non-sleep micro cells and measurement results corresponding to sleeping cells, and sorts the measurement results according to RSRP.

Optionally, the terminal identifies the dormant micro cell by detecting the energy of the Physical Broadcast Channel (Physical Broadcast Channel, PBCH) part on the Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol corresponding to the SSS.

Further, the terminal firstly detects whether there is a non-sleep micro cell that satisfies the S criterion according to the measurement result, and if so, performs cell reselection from the non-sleep micro cells according to the descending order of RSRP; if there is no non-sleeping micro cell that meets the S criterion For a micro cell, the terminal selects a micro cell with a high RSRP from the dormant micro cells (which also needs to satisfy the S criterion) to activate according to the descending order of RSRP, and tries to camp.

Step 703: The terminal sends an uplink knock signal to the second access network device corresponding to the target micro cell, where the uplink knock signal is used to instruct the second access network device corresponding to the target micro cell to exit the sleep state.

In a possible implementation manner, the terminal activates the target micro cell to exit the sleep state by periodically sending an uplink knock signal. Optionally, the uplink knock signal (Knock UpLink signal, KcUL) can be obtained by modifying the designated time slot in the existing uplink signal, and the access network device has the ability to identify the uplink knock signal.

Step 704, the second access network device receives the uplink knock signal sent by the idle state terminal.

In a possible implementation manner, the second access network device in a dormant state monitors an uplink knock signal in a fixed time slot. If the uplink knock signal is detected, the second access network device exits the sleep state, otherwise, the second access network device maintains the sleep state.

Step 705, the second access network device exits the sleep state according to the uplink knock signal.

Step 706, the second access network device sends a broadcast message.

After exiting the dormant state, the second access network device resends the broadcast message, so that the terminal can try to camp by receiving the broadcast message.

In some embodiments, since the paging area will be pushed out after the micro cell goes to sleep, after the second access network device pushes out of the dormant state, it also needs to send an exit dormancy notification to a mobility management function (Access and Mobility management Function, AMF) entity . The AMF entity is about to add the micro cell corresponding to the second access network device to the paging domain according to the exit dormancy notification, and when a terminal in the micro region is candidate for paging, it will send a paging message to the second access network device.

Step 707, in response to the broadcast message of the target micro cell, the terminal stops sending the uplink knock signal.

In a possible implementation manner, after the terminal sends an uplink knock signal to the second access network device, it continuously detects whether a broadcast message sent by the second access network device is received. If receiving the broadcast message sent by the second access network device, stop sending the uplink knock signal, and try to camp on the target micro cell through cell reselection.

Optionally, if the broadcast message (including MIB and SIB1) sent by the second access network device is not received within a preset time period, the terminal attempts to send an uplink knock signal to the access network device corresponding to other dormant micro cells.

In an illustrative example, as shown in FIG. 8 , the terminal 81 currently resides in the macro cell corresponding to the macro base station 82 . In the idle state, the terminal 81 measures the non-sleep micro cells and the dormant micro cells, and according to the measurement results, determines the dormant micro cell with the highest RSRP as the target micro cell that needs to be activated, and sends an uplink transmission to the micro base station 83 corresponding to the target micro cell. Knock signal. After receiving the uplink knock signal, the micro base station 83 resends the broadcast message. After receiving the broadcast message, the terminal 81 stops sending the uplink knock signal, and tries to camp on the target micro cell.

In this embodiment, the terminal in the idle state activates the dormant micro cell in the dormant state by performing cell measurement on the non-sleep micro cell and the dormant micro cell, and according to the cell measurement result, transmits an uplink knock signal, and tries to camp on the dormant micro cell. Staying in the micro cell improves the efficiency of terminal reselection and the service quality of the cell after reselection.

Please refer to FIG. 9 , which shows a flowchart of a method for controlling cell dormancy according to another exemplary embodiment of the present application. The method includes:

Step 901, the terminal performs cell measurement.

The terminal is in an RRC connected state (connected).

For the implementation of this step, reference may be made to the foregoing step 701, and details are not described herein again in this embodiment.

Step 902, the terminal reports a cell measurement report to the access network device corresponding to the serving cell according to the measurement result, the cell measurement report includes cell measurement information of at least one neighboring cell, and at least one neighboring cell includes at least one sleeping micro cell.

In this embodiment, the terminal reports the measurement result obtained by measurement to the serving cell. The serving cell can know the situation of neighboring cells near the terminal according to the measurement result.

Step 903, the access network device corresponding to the serving cell determines a target micro cell from at least one dormant micro cell.

In a possible implementation, in the process of providing services for the terminal, the access network device corresponding to the serving cell can obtain the service requirements of the terminal. If the current serving cell cannot meet the service requirements (such as high-speed connection requirements), the service The access network device corresponding to the cell determines whether there is a dormant micro cell that can meet the service requirement according to the measurement result.

In a possible implementation manner, when there is a dormant micro cell that can meet the service requirement, and the number of dormant micro cells is 1, the access network device determines the dormant micro cell as the target micro cell; When the dormant micro cells meet the service requirement, and the number of dormant micro cells is at least 2, the access network device determines the target micro cell from the dormant micro cells in descending order according to the RSRP.

Step 904, the access network device corresponding to the serving cell sends a second handover request to the second access network device corresponding to the target micro cell, where the second handover request includes an activation instruction.

After the target micro cell is determined, the access network device corresponding to the serving cell sends a second handover request including an activation instruction to the corresponding second access network device through the X2 interface, requesting the target micro cell to exit the sleep state.

Step 905: The second access network device receives a second handover request sent by other access network devices.

Wherein, the other access network device is the access network device corresponding to the above serving cell.

Step 906, the second access network device exits the dormant state according to the activation instruction.

After receiving the second handover request, the second access network device exits the dormant state and resumes sending the broadcast message.

Step 907, the second access network device sends a second handover response to other access network devices, where the second handover response includes an activation response.

Further, the second access network device sends a second handover response including an activation response to the access network device corresponding to the serving cell, so that it knows that the second access network device is in a working state.

Step 908, the serving cell sends an RRC reconfiguration message to the terminal corresponding to the access network device.

After receiving the second handover response, the access network device corresponding to the serving cell performs cell handover for the terminal by sending an RRC reconfiguration message to the terminal.

Step 909, the terminal receives the RRC reconfiguration message sent by the access network device corresponding to the serving cell.

Step 910, the terminal switches from the serving cell to the target micro cell according to the RRC reconfiguration message.

After the terminal receives the RRC reconfiguration message, it adopts the RRC connection reconfiguration method in the related art to switch from the current serving cell to the target microcell, and the target microcell provides services that meet the needs of the terminal.

In an illustrative example, as shown in FIG. 10 , the terminal 1001 currently resides in the macro cell corresponding to the macro base station 1002 . In the connected state, the terminal 1001 measures the non-sleep micro cells and the dormant micro cells, and reports the measurement results to the macro base station 1002 . When the terminal 1001 has a high-speed connection requirement and the macro cell cannot meet the high-speed connection requirement, the macro base station 1002 determines the dormant micro cell as the target micro cell according to the measurement result, and sends a handover request to the micro base station 1003 corresponding to the target micro cell. After receiving the handover request, the micro base station 1003 exits the sleep state, and sends a handover response to the macro base station 1002 . The macro base station 1002 sends an RRC reconfiguration message to the terminal 1001 according to the handover response, so that the terminal 1001 is handed over to the target micro cell.

In this embodiment, when the serving cell cannot meet the service requirement of the terminal, according to the measurement result reported by the terminal, a dormant microcell that can meet the service requirement is selected, and the dormant microcell is activated by sending a handover request, so that the terminal can pass The RRC is reconfigured and switched to the activated micro cell to provide the terminal with the quality of service.

It should be noted that, in each of the above embodiments, the steps that take the first access network device as the main body of execution can be independently implemented as the control method for cell dormancy on the side of the first access network device; the second access network device is used as the control method. The steps of the execution subject can be independently implemented as a control method of cell dormancy on the device side of the second access network; the steps of taking the terminal as the execution subject can be independently implemented as a control method of cell dormancy on the terminal side, which is not discussed in this embodiment. Repeat.

Please refer to FIG. 11 , which shows a structural block diagram of an apparatus for controlling cell dormancy provided by an exemplary embodiment of the present application. The apparatus may be implemented as all or a part of the first access network equipment through software, hardware or a combination of the two. The device includes:

A load report receiving module 1101 is configured to receive a load report of at least one second access network device, where the second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one one of the microcells;

A determination module 1102, configured to determine, according to the load report, a target access network device from at least one of the second access network devices, where the load of the target access network device corresponding to a micro cell satisfies a low load condition;

The instruction sending module 1103 is configured to send a sleep instruction to the target access network device, and the target access network device is configured to enter a sleep state according to the sleep instruction.

Optionally, the low load condition includes at least one of the following: the load headroom of the macro cell is larger than the load of the micro cell, and there is a load headroom of at least one adjacent micro cell that is larger than the load of the micro cell.

Optionally, the device further includes:

A first handover request receiving module, configured to receive a first handover request sent by the target access network device, where the first handover request is used to request to switch the load of the micro cell to the macro cell or an adjacent micro cell Area.

Optionally, in the sleep state, the target access network device continues to send a downlink synchronization signal and stops sending broadcast messages, and the downlink synchronization signal is used for terminal synchronization.

Optionally, the downlink synchronization signal includes PSS or SSS; the broadcast message includes MIB and SIB.

Optionally, the device further includes:

a measurement report receiving module, configured to receive a cell measurement report reported by a connected terminal, where the cell measurement report includes cell measurement information of at least one neighboring cell, and at least one of the neighboring cells includes at least one dormant micro cell;

a cell determination module, configured to determine a target micro cell from at least one of the dormant micro cells;

A second handover request sending module, configured to send a second handover request to the second access network device corresponding to the target micro cell, where the second handover request includes an activation instruction, and the activation instruction is used to instruct the target micro cell zone exits the sleep state.

Optionally, the load report is reported when the load of the second access network device in the micro cell is less than a load threshold and reaches a preset time period.

Please refer to FIG. 12 , which shows a structural block diagram of an apparatus for controlling cell dormancy provided by another exemplary embodiment of the present application. The apparatus may be implemented as all or a part of the second access network device through software, hardware or a combination of the two. The device includes:

A load report reporting module 1201 is configured to report a load report to a first access network device, and the first access network device is configured to report a load report from at least one of the second access network devices according to the load report of at least one of the second access network devices. The second access network device determines a target access network device, and sends a sleep instruction to the target access network device, the first access network device is the access network device corresponding to the macro cell, and the macro cell's The coverage includes at least one of the micro cells, and the load of the micro cell corresponding to the target access network device satisfies the low load condition;

an instruction receiving module 1202, configured to receive the sleep instruction sent by the first access network device;

The sleep module 1203 is configured to enter a sleep state according to the sleep instruction.

Optionally, the low load condition includes at least one of the following: the load headroom of the macro cell is larger than the load of the micro cell, and there is a load headroom of at least one adjacent micro cell that is larger than the load of the micro cell.

Optionally, the device further includes:

a first handover request sending module, configured to send a first handover request to the first access network device, where the first handover request is used to request to switch the load of the micro cell to the macro cell or an adjacent micro cell Area;

The sleep module 1203 is used for:

In response to completing the load switching, the sleep state is entered according to the sleep instruction.

Optionally, the load report reporting module 1201 is used for:

In response to the load of the micro cell being less than the load threshold and reaching a preset time period, the load report is reported to the first access network device.

Optionally, the device further includes:

The signal sending module is configured to continue to send downlink synchronization signals and stop sending broadcast messages in the sleep state, and the downlink synchronization signals are used for terminal synchronization.

Optionally, the downlink synchronization signal includes PSS or SSS; the broadcast message includes MIB and SIB.

Optionally, the device further includes:

The second handover request receiving module is configured to receive a second handover request sent by another access network device, where the other access network device is the first access network device or other second access network device, the first access network device is The second handover request is sent by the other access network device according to the cell measurement report reported by the connected terminal. The second handover request includes an activation instruction, and the activation instruction is used to instruct the target sleeping micro cell to exit the the sleep state;

A first sleep exit module, configured to exit the sleep state according to the activation instruction.

Optionally, the device further includes:

a knock signal receiving module, configured to receive an uplink knock signal sent by an idle state terminal, where the uplink knock signal is used to instruct the second access network device to exit the dormant state;

A second dormancy exit module, configured to exit the dormancy state according to the uplink knock signal;

and a broadcast module, configured to send the broadcast message, and the idle state terminal is used to perform cell reselection according to the broadcast message.

Optionally, the device further includes:

A notification sending module, configured to send a dormancy exit notification to an AMF entity, where the AMF entity is configured to add a micro cell corresponding to the second access network device to a paging domain according to the dormancy exit notification.

Please refer to FIG. 13 , which shows a structural block diagram of an apparatus for controlling cell dormancy provided by another exemplary embodiment of the present application. The apparatus can be implemented as all or a part of the terminal through software, hardware or a combination of the two. The device includes:

A measurement module 1301, configured to perform cell measurement;

The switching module 1302 is configured to switch to a target micro cell according to the measurement result, the target micro cell was previously in a dormant state, and exits the dormant state after being activated, wherein the target micro cell is a micro cell corresponding to the target access network device area, the target access network device is determined by the first access network device from at least one second access network device according to the load report of at least one second access network device, and the target access network device The load of the device corresponding to the micro cell satisfies the low load condition, and the target access network device enters the sleep state according to the sleep instruction sent by the first access network device, and the first access network device corresponds to the macro cell The second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one of the micro cells.

Optionally, in the sleep state, the target access network device continues to send a downlink synchronization signal and stops sending broadcast messages, and the downlink synchronization signal is used for terminal synchronization.

Optionally, the downlink synchronization signal includes PSS or SSS; the broadcast message includes MIB and SIB.

Optionally, the terminal is in a connected state, and the device further includes:

A first activation module, configured to report a cell measurement report to an access network device corresponding to the serving cell according to the measurement result, where the cell measurement report includes cell measurement information of at least one neighboring cell, and the serving cell corresponds to the access network device. The network device is configured to determine the target micro cell from at least one of the dormant micro cells, and send a second handover request to the second access network device corresponding to the target micro cell, where the second handover request includes an activation instruction, where the activation instruction is used to instruct the target micro cell to exit the sleep state.

Optionally, the terminal is in an idle state, and the apparatus further includes:

The second activation module is configured to, in response to the measurement result indicating that there is no non-sleep micro cell that complies with the S criterion, and that there is a dormant micro cell that complies with the S criterion, according to the RSRP of the dormant micro cell, from the dormant micro cell in determining the target micro cell;

A knock signal sending unit, configured to send an uplink knock signal to the second access network device corresponding to the target micro cell, where the uplink knock signal is used to indicate the second access network device corresponding to the target micro cell Exiting the sleep state, and after exiting the sleep state, the second access network device corresponding to the target micro cell continues to send broadcast messages;

The knock signal sending unit is further configured to send the uplink knock signal in response to the broadcast message of the target micro cell.

It should be noted that, when the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example for illustration. The internal structure is divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.

Please refer to FIG. 14 , which shows a schematic structural diagram of an access network device provided by an exemplary embodiment of the present application. The terminal includes: a processor 1401 , a receiver 1402 , a transmitter 1403 , a memory 1404 and a bus 1405 .

The processor 1401 includes one or more processing cores, and the processor 1401 executes various functional applications and information processing by running software programs and modules.

The receiver 1402 and the transmitter 1403 may be implemented as a communication component, which may be a communication chip.

The memory 1404 is connected to the processor 1401 through the bus 1405 .

The memory 1404 may be configured to store at least one instruction, and the processor 1401 is configured to execute the at least one instruction to implement various steps performed by the first access network device or the second access network device in the foregoing method embodiments.

Additionally, memory 1404 may be implemented by any type or combination of volatile or non-volatile storage devices including, but not limited to, magnetic or optical disks, electronically erasable rewritable Read-only memory (Electrically-Erasable Programmable Read-Only Memory, EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Random-Access Memory (SRAM), only Read-Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read-Only Memory (PROM).

In an exemplary embodiment, a computer-readable storage medium is also provided, wherein the computer-readable storage medium stores at least one instruction, at least one piece of program, code set or instruction set, the at least one instruction, the At least one section of program, the code set or the instruction set is loaded and executed by the processor to implement the cell dormancy control method executed by the access network device provided by the above method embodiments.

Please refer to FIG. 15 , which shows a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application. The terminal includes: a processor 1501 , a receiver 1502 , a transmitter 1503 , a memory 1504 , and a bus 1505 .

The processor 1501 includes one or more processing cores, and the processor 1501 executes various functional applications and information processing by running software programs and modules.

The receiver 1502 and the transmitter 1503 may be implemented as a communication component, which may be a communication chip.

The memory 1504 is connected to the processor 1501 through the bus 1505 .

The memory 1504 may be configured to store at least one instruction, and the processor 1501 is configured to execute the at least one instruction, so as to implement various steps performed by the terminal in the foregoing method embodiments.

Additionally, memory 1504 may be implemented by any type or combination of volatile or non-volatile storage devices including, but not limited to: magnetic or optical disks, electronically erasable rewritable Read-only memory (Electrically-Erasable Programmable Read-Only Memory, EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Random-Access Memory (SRAM), only Read-Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read-Only Memory (PROM).

In an exemplary embodiment, a computer-readable storage medium is also provided, wherein the computer-readable storage medium stores at least one instruction, at least one piece of program, code set or instruction set, the at least one instruction, the At least one section of program, the code set or the instruction set is loaded and executed by the processor to implement the cell dormancy control method executed by the terminal provided by each of the above method embodiments.

Embodiments of the present application further provide a computer program product, where the computer program product includes at least one computer-readable instruction, and at least one computer-readable instruction is executed by a processor to implement the cell dormancy on the access network device side in the foregoing embodiment. Control Method.

Embodiments of the present application further provide a computer program product, the computer program product includes at least one computer-readable instruction, and the at least one computer-readable instruction is executed by a processor to implement the method for controlling cell dormancy on the terminal side in the foregoing embodiment.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, etc.

The above are only optional embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection of the present disclosure. within the range.

Claims (27)

A method for controlling cell dormancy, characterized in that the method is used for a first access network device corresponding to a macro cell, and the method includes: The first access network device receives a load report of at least one second access network device, the second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one one of the microcells; The first access network device determines, according to the load report, a target access network device from at least one of the second access network devices, where the load of the target access network device corresponding to the micro cell satisfies a low load condition; The first access network device sends a sleep instruction to the target access network device, and the target access network device is configured to enter a sleep state according to the sleep instruction. The method according to claim 1, wherein the low load condition comprises at least one of the following: the load headroom of the macro cell is greater than the load space of the micro cell, and the load headroom of at least one neighboring micro cell exists greater than the load of the micro cell. The method according to claim 2, wherein after the first access network device sends a sleep instruction to the target access network device, the method further comprises: The first access network device receives a first handover request sent by the target access network device, where the first handover request is used to request to switch the load of the micro cell to the macro cell or a neighboring micro cell . The method according to any one of claims 1 to 3, wherein in the sleep state, the target access network device continues to send a downlink synchronization signal and stops sending a broadcast message, and the downlink synchronization signal is used by the terminal Synchronize. The method of claim 4, wherein: The downlink synchronization signal includes a primary synchronization signal PSS or a secondary synchronization signal SSS; The broadcast message includes a master information block MIB and a system information block SIB. The method according to claim 4, wherein after the sending a sleep instruction to the target access network device, the method further comprises: The first access network device receives a cell measurement report reported by a connected terminal, where the cell measurement report includes cell measurement information of at least one neighboring cell, and at least one of the neighboring cells includes at least one dormant micro cell; The first access network device determines a target micro cell from at least one of the dormant micro cells; The first access network device sends a second handover request to the second access network device corresponding to the target micro cell, where the second handover request includes an activation instruction, and the activation instruction is used to instruct the target micro cell Exit the sleep state. The method according to any one of claims 1 to 3, wherein the load report is reported by the second access network device when the load of the micro cell is less than a load threshold and reaches a preset duration. A method for controlling cell dormancy, characterized in that the method is used for a second access network device corresponding to a micro cell, and the method includes: The second access network device reports a load report to the first access network device, and the first access network device is configured to, according to the load report of at least one of the second access network devices, from at least one of the The second access network device determines a target access network device, and sends a sleep instruction to the target access network device, the first access network device is the access network device corresponding to the macro cell, and the macro cell's The coverage includes at least one of the micro cells, and the load of the micro cell corresponding to the target access network device satisfies the low load condition; receiving, by the second access network device, the sleep instruction sent by the first access network device; The second access network device enters a sleep state according to the sleep instruction. The method according to claim 8, wherein the low load condition comprises at least one of the following: the load headroom of the macro cell is greater than the load space of the micro cell, and the load headroom of at least one adjacent micro cell exists greater than the load of the micro cell. The method of claim 9, wherein: Before entering the sleep state according to the sleep instruction, the method further includes: The second access network device sends a first handover request to the first access network device, where the first handover request is used to request to switch the load of the micro cell to the macro cell or a neighboring micro cell ; The entering into the sleep state according to the sleep instruction includes: In response to completing the load switching, the sleep state is entered according to the sleep instruction. The method according to any one of claims 8 to 10, wherein the reporting the load report to the first access network device comprises: In response to the load of the micro cell being less than the load threshold and reaching a preset time period, the second access network device reports the load report to the first access network device. The method according to any one of claims 8 to 10, wherein after entering the sleep state according to the sleep instruction, the method further comprises: In the sleep state, the second access network device continues to send a downlink synchronization signal and stops sending broadcast messages, and the downlink synchronization signal is used for terminal synchronization. The method of claim 12, wherein: The downlink synchronization signal includes PSS or SSS; The broadcast message includes MIB and SIB. The method of claim 12, wherein the method further comprises: The second access network device receives a second handover request sent by another access network device, the other access network device is the first access network device or another second access network device, the second access network device is The handover request is sent by the other access network device according to the cell measurement report reported by the connected terminal, and the second handover request includes an activation instruction, and the activation instruction is used to instruct the target sleeping micro cell to exit the sleep state; The second access network device exits the dormant state according to the activation instruction. The method of claim 12, wherein the method further comprises: The second access network device receives an uplink knock signal sent by an idle state terminal, where the uplink knock signal is used to instruct the second access network device to exit the dormant state; The second access network device exits the dormant state according to the uplink knock signal; The second access network device sends the broadcast message, and the idle state terminal is used to perform cell reselection according to the broadcast message. The method according to claim 15, wherein after exiting the sleep state according to the uplink knock signal, the method further comprises: The second access network device sends an exit dormancy notification to the mobility management function AMF entity, where the AMF entity is configured to add a micro cell corresponding to the second access network device to the paging domain according to the dormancy exit notification. A method for controlling cell dormancy, characterized in that the method is used for a terminal, and the method includes: the terminal performs cell measurement; the terminal switches to the target micro cell according to the measurement result, and the target micro cell was previously in a dormant state and exits the dormant state after being activated; Wherein, the target micro cell is a micro cell corresponding to a target access network device, and the target access network device is a first access network device according to a load report of at least one second access network device, from at least one of the It is determined from the second access network device that the load of the target access network device corresponding to the micro cell satisfies the low load condition, and the target access network device enters the destination network according to the sleep instruction sent by the first access network device. In the sleep state, the first access network device is an access network device corresponding to a macro cell, the second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one of the microcells. The method according to claim 17, wherein in the sleep state, the target access network device continues to send a downlink synchronization signal and stops sending a broadcast message, and the downlink synchronization signal is used for terminal synchronization. The method of claim 18, wherein: The downlink synchronization signal includes PSS or SSS; The broadcast message includes MIB and SIB. The method according to claim 18, wherein the terminal is in a connected state, and after the cell measurement is performed, the method further comprises: The terminal reports a cell measurement report to the access network device corresponding to the serving cell according to the measurement result, where the cell measurement report includes cell measurement information of at least one neighboring cell, and the access network device corresponding to the serving cell is used for The target micro cell is determined from at least one of the dormant micro cells, and a second handover request is sent to the second access network device corresponding to the target micro cell, where the second handover request includes an activation instruction, and the The activation instruction is used to instruct the target micro cell to exit the sleep state. The method according to claim 18, wherein the terminal is in an idle state, and after the cell measurement is performed, the method further comprises: In response to the measurement result indicating that there is no non-sleep micro cell that meets the S criterion, and that there is a sleeping micro cell that meets the S criterion, the terminal according to the reference signal received power RSRP of the sleeping micro cell, from the sleeping micro cell in determining the target micro cell; The terminal sends an uplink knock signal to the second access network device corresponding to the target micro cell, where the uplink knock signal is used to instruct the second access network device corresponding to the target micro cell to exit the sleep state , and after exiting the dormant state, the second access network device corresponding to the target micro cell continues to send broadcast messages; In response to the broadcast message of the target micro cell, stop sending the uplink knock signal. A control device for cell dormancy, characterized in that the device is used for a first access network device corresponding to a macro cell, and the device includes: a load report receiving module, configured to receive a load report of at least one second access network device, where the second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one the microcell; a determining module, configured to determine, according to the load report, a target access network device from at least one of the second access network devices, where the load of the target access network device corresponding to a micro cell satisfies a low load condition; The instruction sending module is configured to send a sleep instruction to the target access network device, and the target access network device is configured to enter a sleep state according to the sleep instruction. A control device for cell dormancy, characterized in that the device is used for a second access network device corresponding to a micro cell, and the device includes: A load report reporting module is configured to report a load report to a first access network device, and the first access network device is configured to report a load report from at least one of the second access network devices according to the load report of at least one of the second access network devices. The access network device determines a target access network device, and sends a sleep instruction to the target access network device, the first access network device is an access network device corresponding to a macro cell, and the macro cell covers The range includes at least one of the micro cells, and the load of the micro cell corresponding to the target access network device satisfies the low load condition; an instruction receiving module, configured to receive the sleep instruction sent by the first access network device; A sleep module, configured to enter a sleep state according to the sleep instruction. A control device for cell dormancy, characterized in that the device is used for a terminal, and the device includes: a measurement module, used for cell measurement; a switching module, configured to switch to a target micro cell according to the measurement result, the target micro cell was previously in a dormant state, and exits the dormant state after being activated; Wherein, the target micro cell is a micro cell corresponding to a target access network device, and the target access network device is a first access network device according to a load report of at least one second access network device, from at least one of the It is determined from the second access network device that the load of the target access network device corresponding to the micro cell satisfies the low load condition, and the target access network device enters the destination network according to the sleep instruction sent by the first access network device. In the sleep state, the first access network device is an access network device corresponding to a macro cell, the second access network device is an access network device corresponding to a micro cell, and the coverage of the macro cell includes at least one of the microcells. An access network device, characterized in that the access network device includes: processor; a transceiver connected to the processor; memory for storing executable instructions for the processor; Wherein, the processor is configured to load and execute the executable instructions to implement the cell dormancy control method as claimed in any one of claims 1 to 7, or to implement the method as claimed in any one of claims 8 to 16. Cell dormancy control method. A terminal, characterized in that the terminal comprises: processor; a transceiver connected to the processor; memory for storing executable instructions for the processor; Wherein, the processor is configured to load and execute the executable instructions to implement the cell dormancy control method according to any one of claims 17 to 21. A computer-readable storage medium, wherein executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by the processor to implement any one of claims 1 to 7 The control method for cell dormancy according to any one of claims 8 to 16, or the control method for cell dormancy according to any one of claims 17 to 21.

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