WO2024021028A1

WO2024021028A1 - Wireless communication methods and apparatuses, device and storage medium

Info

Publication number: WO2024021028A1
Application number: PCT/CN2022/108999
Authority: WO
Inventors: 邢金强
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2024-02-01

Abstract

Wireless communication methods and apparatuses, a device, and a storage medium. A method comprises: a first access network device sending first indication information to at least one second access network device, the first indication information being used for requesting to expand the coverage area of the second access network device and/or for requesting to reduce the transmission power of the first access network device; and when the first access network device receives second indication information sent by each second access network device among the at least one second access network device, reducing the transmission power of the first access network device, the second indication information being used for instructing to expand the coverage area of the second access network device and/or for instructing to reduce the transmission power of the first access network device.

Description

A wireless communication method, device, equipment and storage medium

Technical field

The embodiments of the present application relate to the field of mobile communication technology, and specifically relate to a wireless communication method, device, equipment, and storage medium.

Background technique

In the cellular mobile communication system, the base station serves as a node that communicates with the terminal, sending data issued by the network to the terminal in the form of downlink wireless signals, and at the same time receiving the uplink signal from the terminal. The downlink signal coverage area of the base station and the uplink signal coverage area of the terminal jointly determine the size of a cell. In order to maintain continuous network coverage and real-time availability, base stations usually remain in working condition at all times.

Contents of the invention

Embodiments of the present application provide a wireless communication method, device, equipment, and storage medium.

Embodiments of the present application provide a wireless communication method, including:

The first access network device sends first indication information to at least one second access network device. The first indication information is used to request to expand the coverage area of the second access network device and/or to request to reduce the coverage area of the second access network device. The transmitting power of the first access network device;

When the first access network device receives the second indication information sent by each second access network device in the at least one second access network device, the first access network device reduces the transmission power, and the second indication information is used to Instructing to expand the coverage area of the second access network device and/or instructing to reduce the transmission power of the first access network device.

The second access network device receives the first indication information sent by the first access network device. The first indication information is used to request to expand the coverage area of the second access network device and/or to request to reduce the coverage area of the second access network device. The transmit power of the first access network device;

When the second access network device sends second instruction information to the first access network device, the coverage area is expanded, and the second instruction information is used to instruct to expand the coverage of the second access network device. area and/or used to indicate reducing the transmit power of the first access network device.

An embodiment of the present application provides a wireless communication device, including:

A first communication unit configured for the first access network device to send first indication information to at least one second access network device, where the first indication information is used to request expansion of the coverage area of the second access network device; /or used to request to reduce the transmit power of the first access network device;

The first control unit is configured to reduce the transmit power of the first access network device upon receiving second instruction information sent by each second access network device in the at least one second access network device, The second instruction information is used to instruct to expand the coverage area of the second access network device and/or to instruct to reduce the transmit power of the first access network device.

The second communication unit is configured to receive first indication information sent by the first access network device, where the first indication information is used to request to expand the coverage area of the second access network device and/or to request to reduce the coverage area of the second access network device. The transmitting power of the first access network device;

The second communication unit is configured to expand the coverage area when sending second instruction information to the first access network device, where the second instruction information is used to instruct to expand the coverage area of the second access network device. and/or used to instruct to reduce the transmit power of the first access network device.

The communication device provided by the embodiment of the present application may be the first access network device in the above solution or the second access network device in the above solution. The communication device includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to perform the above-mentioned wireless communication method.

The chip provided by the embodiment of the present application is used to implement the above wireless communication method.

Specifically, the chip includes: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the above-mentioned wireless communication method.

The computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program causes the computer to execute the above-mentioned wireless communication method.

The computer program product provided by the embodiment of the present application includes computer program instructions, which cause the computer to execute the above-mentioned wireless communication method.

The computer program provided by the embodiment of the present application, when run on a computer, causes the computer to perform the above wireless communication method.

Through the above technical solution, the first access network device reduces its own transmission power through negotiation with at least one second access network device and the second terminal device expands the coverage area, so that the expanded coverage area of the at least one second access network device The coverage area covers the coverage area of the first access network device, realizing the merging of cells of different access network devices, and reducing the power consumption of the access network device through the cooperation of multiple access network devices.

Description of drawings

The drawings described here are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the attached picture:

Figure 1 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 2 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 3 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

Figure 4 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

Figure 5 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

Figure 6 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 7 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 8 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 9 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 10 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 11 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 12 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 13 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 14 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 15 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 16 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 17 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 18 is a schematic diagram of an application scenario according to the embodiment of the present application;

Figure 19 is an optional structural schematic diagram of a wireless communication device according to an embodiment of the present application;

Figure 20 is an optional structural schematic diagram of a wireless communication device according to an embodiment of the present application;

Figure 21 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 22 is a schematic structural diagram of a chip according to an embodiment of the present application;

Figure 23 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

Figure 1 is a schematic diagram of an application scenario according to the embodiment of the present application.

As shown in FIG. 1 , the communication system 100 may include a terminal device 110 and a network device 120 . The network device 120 may communicate with the terminal device 110 through the air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120.

It should be understood that the embodiment of the present application is only exemplified by using the communication system 100, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), universal mobile communication system (Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication system, etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal device 110 . The access network device may provide communication coverage for a specific geographical area and may communicate with terminal devices 110 (eg, UEs) located within the coverage area.

The network device 120 may be an evolutionary base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (LTE) system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) equipment, It may be a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, access point, vehicle-mounted device, or wearable device. Equipment, hubs, switches, bridges, routers, or network equipment in the future evolved Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.

The terminal device 110 may be any terminal device, including but not limited to terminal devices that are wired or wirelessly connected to the network device 120 or other terminal devices.

For example, the terminal device 110 may refer to an access terminal, a UE, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device . Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistants (Personal Digital Assistant) , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.

The terminal device 110 can be used for device to device (Device to Device, D2D) communication.

The wireless communication system 100 may also include a core network device 130 that communicates with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, such as an access and mobility management function (Access and Mobility Management Function). , AMF), another example, Authentication Server Function (AUSF), another example, User Plane Function (UPF), another example, SMF. Optionally, the core network device 130 may also be an Evolved Packet Core (EPC) device of the LTE network, for example, a session management function + core network data gateway (Session Management Function + Core Packet Gateway, SMF + PGW- C) Equipment. It should be understood that SMF+PGW-C can simultaneously realize the functions that SMF and PGW-C can realize. In the process of network evolution, the above-mentioned core network equipment may also be called by other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited by the embodiments of this application.

Various functional units in the communication system 100 can also establish connections through next generation network (NG) interfaces to achieve communication.

Figure 1 exemplarily shows a base station, a core network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and other numbers of terminals may be included in the coverage area of each base station. Equipment, the embodiments of this application do not limit this.

It should be noted that FIG. 1 only illustrates the system to which the present application is applicable in the form of an example. Of course, the method shown in the embodiment of the present application can also be applied to other systems. Additionally, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship. It should also be understood that the "instruction" mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation. It should also be understood that the "correspondence" mentioned in the embodiments of this application can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed. , configuration and configured relationship. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be pre-saved in the device (for example, including terminal devices and network devices) by pre-saving corresponding codes, tables or other available The method is implemented by indicating relevant information, and this application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol. It should also be understood that in the embodiments of this application, the "protocol" may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this. .

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following related technologies can be optionally combined with the technical solutions of the embodiments of the present application, and they all belong to the embodiments of the present application. protected range.

As a node that communicates with terminals, as shown in Figure 2, the base station sends the data delivered by the network in the form of downlink signals to the terminals in the coverage area, and at the same time receives the uplink signals of the terminal. The power consumption of the base station includes many aspects. From the perspective of wireless signal transceiver, the base station transmitting signals and receiving signals will cause power consumption, and the transmitting signal occupies a dominant position.

In order to maintain continuous network coverage and real-time availability, base stations usually remain in working condition at all times. But the problem is that in some cases (such as at night) the number of users in the cell is very small, so that the base station can still maintain cell coverage and signal transmission and reception under low load or no load conditions, which reduces the energy efficiency of the base station. Very low, power consumption remains high.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application. The embodiments of this application include at least part of the following content.

The wireless communication method provided by the embodiment of the present application is applied to the first access network device, as shown in Figure 3, and includes:

S301. The first access network device sends first indication information to at least one second access network device, where the first indication information is used to request expansion of the coverage area of the second access network device and/or to request Reduce the transmit power of the first access network device.

S302. When the first access network device receives the second instruction information sent by each second access network device in the at least one second access network device, the first access network device reduces the transmission power, and the second instruction information It is used to instruct to expand the coverage area of the second access network device and/or to instruct to reduce the transmission power of the first access network device.

The wireless communication method provided by the embodiment of the present application is applied to any second access network device among at least one second access network device, as shown in Figure 4, including:

S401. The second access network device receives the first indication information sent by the first access network device. The first indication information is used to request to expand the coverage area of the second access network device and/or to request to reduce the coverage area of the second access network device. The transmit power of the first access network device.

S402. When the second access network device sends second instruction information to the first access network device, expand the coverage area, and the second instruction information is used to instruct the second access network device to expand the coverage area. coverage area and/or used to indicate reducing the transmit power of the first access network device.

The wireless communication method provided by the embodiment of the present application is applied to a wireless communication system including a first access network device and a second access network device, as shown in Figure 5, including:

S501. The first access network device sends first indication information to at least one second access network device, where the first indication information is used to request expansion of the coverage area of the second access network device and/or to request Reduce the transmit power of the first access network device.

S502. The second access network device sends second instruction information to the first access network device. The second instruction information is used to instruct to expand the coverage area of the second access network device and/or use Instructing to reduce the transmit power of the first access network device.

S503. The first access network device reduces the transmission power;

S504. The second access network device expands the coverage area.

Next, the first access network device and the second access network device in the wireless communication method provided by the embodiment of the present application will be described.

The first access network device is any access network device, the second access network device is adjacent to the first access network device, and the cell under the first access network device and the cell under the second access network device form Neighboring neighborhood.

It can be understood that an access network device may be implemented as a first access network device or a second access network device at different times.

When the first access network device determines that the transmission power consumption can be reduced, the first access network device sends first indication information to at least one second access network device to request each second access network device in the at least one second access network device. Expand the coverage area of the second access network device and/or request to reduce the transmit power of the first access network device.

In some embodiments, the conditions for sending the first indication information include at least one of the following:

Sending condition A1, the first quantity is less than a first quantity threshold, and the first quantity is the number of terminal devices in the connected state and/or the number of terminal devices in the inactive state (InActive) under the first access network device;

Sending condition A2: the first throughput is less than the first throughput threshold, and the first throughput is the service throughput of the first access network device.

If the first access network device satisfies one or both of the sending condition A1 and the sending condition A2, and the first access network device determines that it is under low load or no load and does not need to provide high-rate services, it will pass the first indication information. sent to request to reduce its own transmit power to reduce power consumption.

For a second access network device, when receiving the first indication information, it determines whether it agrees to expand the coverage area and/or whether it is allowed to reduce the transmit power of the first access network device.

When the second access network device agrees to expand its own coverage area, that is, to allow the first access network device to reduce its transmit power, the second access network device returns second indication information to the first access network device. The second indication The information is used to instruct to expand the coverage area of the second access network device and/or to instruct to reduce the transmission power of the first access network device.

In the case where the second access network device does not agree to expand the coverage area, that is, it is not allowed to reduce the transmission power, the second access network device may not return a response message, or may return an indication to the first access network device that it does not agree to expand the coverage area. The coverage area of the second access network device and/or the indication information indicating that it is not allowed to reduce the transmit power of the first access network device.

In some embodiments, the conditions for sending the second indication information include at least one of the following:

Sending condition B1, the second quantity is less than the second quantity threshold, the second quantity is the number of terminal devices in the connected state and/or the number of terminal devices in the inactive state under the second access network device;

Sending condition B2, the second throughput is less than the second throughput threshold, and the second throughput is the service throughput of the second access network device.

The size of the first quantity threshold and the second quantity threshold may be the same or different.

The bandwidth of the first throughput threshold and the second throughput threshold may be the same or different.

If the second access network device meets one or both of the transmission condition B1 and the transmission condition B2, and the first access network device determines that it does not provide high-rate services and can carry more services, it determines to agree to the expansion. Its own coverage area and/or is allowed to reduce the transmission power of the first access network device, and indicates by sending the second indication information that it is allowed to reduce the transmission power of the first access terminal device and expand its own coverage area to carry the third A service for access network equipment.

The first access network device may reduce its own transmit power after receiving the second indication information returned by each of the at least one second access network device. Optionally, the first access network device turns off the transmitting function.

When sending the second instruction information, the second access network device expands its coverage area.

In some embodiments, the method for the second access network device to expand the coverage area includes at least one of the following:

Method 1: Reduce the transmission bandwidth;

Method 2: Reduce the modulation order of the modulation method;

Method 3: Increase the transmission power.

Corresponding to the first and second methods, the second access network device can be implemented without changing the transmission power, or can be implemented in the third method, that is, increasing the transmission power.

For the second method, reducing the modulation order of the modulation method can be understood as changing the modulation method, and the modulation order of the modulation method after the change is lower than the modulation order of the modulation method before the change.

In the embodiment of the present application, before the transmission power of the first access network device is reduced, its coverage area is the first coverage area. After the first access network device reduces the transmission power, the first coverage area is reduced. It can be understood that the expanded coverage area of each second access network device in at least one second access network device covers the first coverage area.

It can be understood that the first coverage area is the downlink coverage area, that is to say, before and after the transmission power of the first access network device is reduced, the downlink coverage area shrinks, the downlink coverage area of the second access network device expands, and the first coverage area The reduced area.

In an example, as shown in Figure 6, at least one second access network device includes one access network device: access network device 602. The downlink coverage area of access network device 601 is 6011. The downlink coverage area is 6021. After the access network device 601 turns off the transmission function and the access network device 602 expands the coverage area, the coverage area 6011 will no longer exist. The coverage area 6021 is expanded to the coverage area 6022, and the coverage area 6022 covers the coverage area 6011.

In an example, as shown in Figure 7, at least one second access network device includes two access network devices: access network device 602 and access network device 603. The downlink coverage area of access network device 601 is 6011, the downlink coverage area of the access network device 602 is 6021, and the downlink coverage area of the access network device 602 is 6031. After the access network device 601 turns off the transmitting function and the access network device 602 and the access network device 603 expand the coverage area , coverage area 6011 will not exist, coverage area 6021 is expanded to coverage area 6022, coverage area 6031 is expanded to coverage area 6032, coverage area 6022 and coverage area 6032 cover coverage area 6011.

In the wireless communication method provided by the embodiment of the present application, the first access network device negotiates with at least one second access network device to reduce the transmit power of the first access network device and expand the coverage area of the second access network device. , so that the expanded coverage area of at least one second access network device covers the coverage area before the transmission power of the first access network device is reduced, and the merging of cells of different access network devices is realized through the cooperation of multiple access network devices. Reduce the power consumption of access network equipment.

In some embodiments, the first terminal device sends an uplink signal to the first access network device and receives a downlink signal sent by the first target access network device, and the first terminal device transmits an uplink signal to the first access network device. The access network equipment is located in the first coverage area before reducing the transmission power and is located in the first area after the first access network equipment reduces the transmission power. The first coverage area is where the first access network equipment reduces the transmission power. The coverage area before power, the first area is the area where the second coverage area after the expanded coverage area of the first target access network equipment overlaps with the first coverage area, the first target access network equipment It is a second access network device among the at least one second access network device.

The first terminal equipment in the coverage area before the first access network equipment reduces the power is located in the second coverage area after the first target access network equipment expands the coverage area after the first access network equipment reduces the transmission power. When , the first access network device provides uplink services to the first terminal device, and the second terminal device as the first target access network device provides downlink services to the first terminal device.

For the uplink signal of the first terminal device, the first access network device of the receiving device, the first terminal device sends the uplink signal to the first access network device, and the first access network device receives the uplink signal sent by the first terminal device.

For the downlink signal of the first terminal device, the sending device is the first target access network device, the first target access network device sends the downlink signal to the first terminal device, and the first terminal device receives the downlink signal sent by the first target access network device. Downward signal.

When at least one second access network device includes a second access network device, the first target access network device is the second access network device.

In an example, for the scenario shown in Figure 6, as shown in Figure 8, the access network device 601 receives the uplink signal sent by the terminal device 600, and the access network device 602 sends a downlink signal to the terminal device 600.

When at least one second access network device includes multiple second access network devices, the first target access network device can be the multiple second access network devices, and the expanded coverage area includes the first terminal device. The second access network equipment.

In an example, for the scenario shown in Figure 7, as shown in Figure 9, the access network device 601 receives the uplink signal sent by the terminal device 600, and the terminal device is located in the coverage area 6023, then the access network device 603 accesses the terminal device 602. Device 600 sends downlink signals.

Optionally, the first target access network device is the second access network device with the strongest signal strength of the measurement signal received by the first terminal device among at least one second access network device that expands the coverage area, It can be understood that the first target access network device is the second access network device with the strongest signal strength of the measurement signal received by the first terminal device among the at least one second access network device.

The first terminal device measures the channel strength of the downlink signal of each second access network device in the at least one second access network device, and the second access network device with the strongest measured signal strength is the first target access network device, at this time, the first terminal device may determine that it is within the expanded coverage area of the second access network device that is the first target access network device.

Optionally, the first terminal device determines the first target access network device based on the signal strength of the target signal, and indicates the first target access network device to the first access network device.

Optionally, the first terminal device reports the signal strength of the downlink signal of each second access network device to the first access network device, and the first access network device determines the first target access network device based on the received signal strength. .

In some embodiments, the anchor access network device of the first terminal device is the first access network device or the first target access network device.

Optionally, the anchor access network device is responsible for signaling connection control between the first terminal device and the access network device.

Taking the anchor point device of the first terminal device as the first access network device as an example, the first access network device is responsible for signaling connection control between the first terminal device and the access network device. The first The uplink signal receiving device and the downlink signal sending device of the terminal device are by default the first target access network device.

In some embodiments, if the anchor device of the first terminal device is a first access network device, the first access network device configures the first target access network device to Send downlink signal.

At this time, the first target access network device is configured by the first access network device to send a downlink signal to the first terminal device.

In the case where the first access network device is the anchor device of the first terminal device, the first access network device sends first configuration information to the first target access network device, where the first configuration information is used to Instructing the first target access network device to send a downlink signal to the first terminal device, and causing the sending device of the downlink signal of the first terminal device to change from the first access network device to the first target access network by sending the first configuration information. equipment.

Optionally, the first access network device configures the downlink carrier frequency of the first target access network device to the first terminal device, so that the downlink carrier frequency of the first target access network device configured by the terminal device monitors the first target access Downlink signals sent by network equipment.

Taking the anchor device of the first terminal device as the first target access network device as an example, the first terminal device performs random access on the first target access network device, so that the first target access network device Responsible for signaling connection control between the first terminal device and the access network device, the uplink signal receiving device and the downlink signal sending device of the first terminal device default to the first target access network device.

In some embodiments, if the anchor access network device of the first terminal device is the first target access network device, the method further includes: the first access network device is accessed by the first target. The network access device is configured to receive the uplink signal sent by the first terminal device.

At this time, the first target access network device configures the first access network device to receive the uplink signal sent by the first terminal device.

In the case where the first target access network device is the anchor device of the first terminal device, the first target access network device sends second configuration information to the first access network device, and the second configuration information is In order to instruct the first access network device to receive the uplink signal sent by the first terminal device, the sending of the second configuration information causes the receiving device of the uplink signal of the first terminal device to change from the first target access network device to the first access device. network equipment.

In some embodiments, the uplink signal is demodulated by the first access network device or demodulated by the first target access network device.

In the case where the receiving device of the uplink signal of the first terminal device is the first access network device, the first access network device may retain the demodulation function of the uplink signal of the first terminal device, or may use the first terminal device to The demodulation function of the uplink signal is implemented by the first target access network equipment.

Taking the uplink signal demodulated by the first access network device as an example, the first access network device receives the uplink signal sent by the first terminal device and demodulates the received uplink signal. At this time, the first terminal device The reception and demodulation functions of uplink signals are implemented by the first access network equipment.

Taking the uplink signal being demodulated by the first target access network device as an example, the uplink signal is forwarded by the first access network device to the first target access network device. The first access network device receives the uplink signal sent by the first terminal device and transparently forwards the received uplink signal to the first target access network device. The first target access network device receives the uplink signal and transparently forwards it to the first access network device. the uplink signal, and demodulates the received uplink signal. At this time, the reception and demodulation functions of the uplink signal of the first terminal device are respectively implemented by the first access network device and the first target access network device.

In an example, for the scenario shown in Figure 8, as shown in Figure 10, the access network device 601 receives the uplink signal sent by the terminal device 600, and the access network device 601 forwards the received uplink signal to the access network device 602 , the access network device 602 demodulates the uplink signal sent by the terminal device 600.

Optionally, the interface used to forward the uplink signal from the first access network device to the first target access network device includes at least one of the following: an air interface and a first interface, and the first interface is the An interface between the first access network device and the first target access network device.

For the air interface, when the uplink signal of the first terminal device is forwarded using the air interface, the first access network device adds the information of the first target access network device as the destination address in the received uplink signal, so that the first target access network device The network access device receives the uplink signal.

Optionally, when the uplink signal is forwarded through the air interface, at least one of the following processes is performed before the uplink signal is forwarded: power amplification; frequency conversion.

In the case where the uplink signal is power amplified, after the first access network device receives the uplink signal from the first terminal device, it can serve as a relay device for the first target access network device to power amplify the received uplink signal. , and sends the power-amplified uplink signal to the first target access network device, thereby ensuring that the first target access network device receives the uplink signal of the first terminal device.

In the case where the uplink signal is frequency converted, after receiving the uplink signal from the first terminal device, the first access network device performs frequency conversion on the received uplink signal according to the uplink carrier frequency of the first target access network device, Convert the frequency of the uplink signal of the first terminal device to the uplink carrier frequency of the first target access network device, and send the frequency-converted uplink signal to the first target access network device, thereby ensuring that the first target access network The device receives the uplink signal from the first terminal device.

Optionally, the first access network device receives the uplink signal of the first terminal device on the first uplink, if the uplink carrier frequency of the first target access network device is different from the frequency used by the first uplink. Next, the first access network device performs frequency conversion on the uplink signal to be sent to the first target access network device; if the uplink carrier frequency of the first target access network device is the same as the frequency used by the first uplink , the first access network device does not need to perform frequency conversion on the uplink signal to be sent to the first target access network device.

Optionally, the first access network device receives the uplink signal of the first terminal device on the first uplink. If the first target access network device does not support the frequency used by the first uplink, the first target access network device The network access device does not have the ability to receive the uplink signal of the first terminal device, and the first access network device performs frequency conversion on the uplink signal to be sent to the first target access network device; if the first target access network device supports the first If the uplinks use the same frequency, then the first target access network device has the ability to receive the uplink signal of the first terminal device, and the first access network device does not need to perform processing on the uplink signal to be sent to the first target access network device. frequency conversion.

For the first interface, the first interface is an interface between the first access network device and the first target access network device, which can be understood as a point-to-point interface. The first interface can be determined based on the wireless communication system, such as: X2 interface, Xn interface, etc. Optionally, the first interface is a physical interface implemented through optical fiber, cable, etc.

In the wireless communication method provided by the embodiment of the present application, the first terminal device can trigger mobility administrative management based on a change in location. The location change of the first terminal device may include at least one of the following:

Position change 1. Moving from the first area to the second area, the second area being the area in the second coverage area that does not overlap with the first coverage area;

Position change 2: moving from the first area to a third area, where the first coverage area and the third coverage area overlap.

The second coverage area and the third coverage area are the coverage areas after different second access network equipment expands the coverage area. Here, the second access network equipment forming the second coverage area is called the first target access. Network equipment, the second access network equipment forming the third coverage area is called the second target access network equipment.

If the first terminal device is located in the first area, the receiving device of the uplink signal of the first terminal device is the first access network device, and the sending device of the downlink signal of the first terminal device is the first target access network device.

If the first terminal device is located in the second area, the uplink signal receiving device and the downlink signal sending device of the first terminal device are both the first target access network device.

If the first terminal device is located in the third area, the receiving device of the uplink signal of the first terminal device is the first access network device, and the sending device of the downlink signal of the first terminal device is the second target access network device.

The first terminal equipment is located in the first area or the third area, and its uplink signal can be received by the first access network equipment.

The first terminal device is located in the second area, and its uplink signal cannot be received by the first access network device, then the uplink signal is received by the first target access network device.

Taking the position change of the first terminal device as position change one as an example, the receiving device of the uplink signal is changed from the first access network device to the first target access network device.

The first terminal device is located in the first area, the receiving device of the uplink signal is the first access network device, and the sending device of the downlink signal is the first target access network device. The first terminal device moves from the first area to the second area, the receiving device of the uplink signal of the first terminal device changes from the first access network device to the first target access network device, and the sending device of the downlink signal does not change to the first target access network device. A target access network device, when the first terminal device is in the second area, the uplink signal receiving device and the downlink signal sending device are both the first target access network device.

In an example, based on the scenario shown in Figure 9, as shown in Figure 11, the first area is the area where the coverage area 6011 overlaps with the coverage area 6032, and the second area is the area in the coverage area 6032 that does not overlap with the coverage area 6011. , the terminal device 600 is located in the first area, then the uplink signal receiving device is the access network device 601, and the downlink signal sending device is the access network device 603. When the terminal device 600 moves from the first area to the second area, If the receiving device of the uplink signal of the terminal device 600 is changed from the access network device 601 to the access network device 603, then the receiving device of the uplink signal and the sending device of the downlink signal of the terminal device 600 are both the access network device 603.

In some embodiments, the conditions for determining that the first terminal device moves from the first area to the second area include one of the following:

The signal strength of the uplink signal received by the first access network device is lower than a first strength threshold;

The signal strength of the downlink signal received by the first terminal device is higher than the second strength threshold.

Optionally, in the manner indicated by the access network, the first access network device measures the signal strength of the received uplink signal, and when the signal strength of the received uplink signal is lower than the first strength threshold , it is determined that the distance between the first terminal device and the first access network device is greater than the first distance threshold of the first strength threshold threshold pair, then it is determined that the first terminal device leaves the first coverage area. In the case where the at least one second access network device includes only one second access network device, the first access network device determines that the first terminal device leaves the first area.

Optionally, in a terminal-based measurement manner, the first terminal device measures the signal strength of the downlink signal received from the first target access network device, and when the signal strength of the received downlink signal is higher than the second strength threshold threshold Next, it is determined that the distance between the location of the first terminal device and the first target access network device is less than a second distance threshold corresponding to the second intensity threshold threshold.

After determining that the first terminal device meets at least one of the following conditions, it is determined that the first terminal device leaves the first area and enters the second area: the distance to the first access network device is greater than the first distance threshold, and the first terminal device is connected to the first target. The distance of the network device is less than the second distance threshold.

In some embodiments, the changing method of switching the uplink signal receiving device from the first access network device to the first target access network device includes one of the following:

The first terminal device initiates a random access process on the first target access network device;

The first target access network device configures the uplink carrier of the first terminal device as the first target uplink carrier, and the first target uplink carrier is the uplink carrier of the first target access network device.

When the first access network device is an anchor access network device, the first terminal device initiates a random access process on the first target access network device, so that the first terminal device communicates with the first target access network device. Carry out uplink and downlink communication.

When the first target access network device is an anchor access network device, the first target access network device configures the uplink carrier of the first terminal device as the first target uplink carrier.

If the first target access network device does not have the carrier frequency to receive the first uplink between the first terminal device and the first access network device, the first target access network device configures the first terminal device. The uplink carrier is the first target uplink carrier.

If the first target access network device is capable of receiving the carrier frequency of the first uplink between the first terminal device and the first access network device, the first target access network device does not need to The uplink carrier is reconfigured.

Optionally, the first target access network device configures the first access network device to release resources for receiving the uplink signal sent by the first terminal device.

Optionally, the first target access network device sends third configuration information to the first terminal device, where the third configuration information is used to instruct the first target access network device to receive the uplink signal sent by the first terminal device, The sending of the third configuration information causes the receiving device of the uplink signal of the first terminal device to change from the first access network device to the first target access network device.

Taking the position change of the first terminal device as position change two as an example, the receiving device of the downlink signal is changed from the first target access network device to the second target access network device.

The first terminal device is located in the first area, the receiving device of the uplink signal is the first access network device, and the sending device of the downlink signal is the first target access network device. The first terminal device moves from the first area to the third area. The receiving device of the uplink signal of the first terminal device remains unchanged and is the first access network device. The sending device of the downlink signal of the first terminal device remains the first access network device. When the target access network device is changed to the second target access network device, and the first terminal device is in the third area, the uplink signal receiving device is the first access network device, and the downlink signal sending device is the third access network device. 2. Target access network equipment.

In an example, based on the scenario shown in Figure 9, as shown in Figure 12, the first area is the area where the coverage area 6011 overlaps the coverage area 6032, and the third area is the area where the coverage area 6011 overlaps the coverage area 6022. The terminal If the device 600 is located in the first area, the receiving device of the uplink signal is the access network device 601, and the sending device of the downlink signal is the access network device 603. When the terminal device 600 moves from the first area to the third area, the terminal device 600 moves from the first area to the third area. The sending device of the downlink signal of terminal device 600 is changed from the access network device 603 to the access network device 602, then the receiving device of the uplink signal of the terminal device 600 is the access network device 601, and the sending device of the downlink signal is the access network device 602. .

In some embodiments, the conditions for determining that the first terminal device moves from the first area to the third area include one of the following:

The signal strength of the downlink signal sent by the first target access network device received by the first terminal device is lower than a third strength threshold;

The signal strength of the downlink signal sent by the second target access network device received by the first terminal device is higher than a fourth strength threshold.

Optionally, when the first terminal device measures the signal strength of the downlink signal received from the first target access network device, and when the signal strength of the received downlink signal is lower than the third strength threshold, determine that the first terminal device The distance between the location and the first target access network device is greater than the third distance threshold corresponding to the third intensity threshold threshold.

Optionally, in a terminal-based measurement manner, the first terminal device measures the signal strength of the downlink signal received from the second target access network device, and when the signal strength of the received downlink signal is higher than the fourth strength threshold threshold Next, it is determined that the distance between the location of the first terminal device and the second target access network device is less than a fourth distance threshold corresponding to the fourth intensity threshold threshold.

After it is determined that the first terminal device meets at least one of the following conditions, it is determined that the first terminal device leaves the first area and enters the third area: the distance to the first target access network device is greater than the third distance threshold, and the distance to the second target access network device is The distance of the network access device is less than the fourth distance threshold.

In some embodiments, the changing method of changing the sending device of the downlink signal from the first target access network device to the second target access network device includes one of the following:

The first access network device configures the second target access network device to send a downlink signal to the first terminal device;

The first terminal device initiates a random access process on the second target access network device, and the second target access network device configures the first access network device to receive the Upward signal.

In the case where the first access network device is the anchor access network device, the anchor access network device of the first terminal device does not change, only the downlink signal non-transmitting device changes, and the first access network device serves as the anchor. The point access network device configures the second target access network device to send a downlink signal to the first terminal device.

Optionally, the first access network device instructs the second target access network device to send a downlink signal to the first terminal device.

Optionally, the first access network device indicates that the downlink carrier frequency of the first terminal device is the downlink carrier frequency of the second target access network device.

When the first target access network device is an anchor access network device, the first terminal device performs a random access process on the second target access network device, so that the anchor access network device of the first terminal device The first target access network device is changed to the second target access network device. When the second target access network device is the anchor access network device, the second target access network device is configured as the first terminal device. The uplink signal receiving equipment and the downlink signal sending equipment. At this time, the second target access network device configures the first access network device to receive the uplink signal sent by the first terminal device.

Optionally, the second target access network device configures the first target access network device to release resources for sending downlink signals to the first terminal device.

Optionally, the first access network device sends fourth configuration information to the second target terminal device, where the fourth configuration information is used to instruct the second target access network device to send a downlink signal to the first terminal device, by The sending of the fourth configuration information causes the downlink signal sending device of the first terminal device to change from the first target access network device to the second target access network device.

The wireless communication method provided by the embodiment of the present application performs mobility management on the first terminal device on a wireless communication network composed of a first access network device and one or more second access network devices, ensuring that the first terminal device When the first access network device reduces its transmit power, it can perform normal position changes.

In some embodiments, the wireless communication method provided by the embodiment of the present application also includes:

The first access network device receives third indication information sent by a third target access network device, and the third target access network device is any second access network device among the at least one second access network device. network equipment, the third instruction information is used to instruct to reduce the coverage area of the third target access network equipment and/or the third instruction information is used to instruct to increase the transmission power of the first access network equipment.

At this time, the third target access network device sends third indication information to the first access network device. The third indication information is used to instruct to reduce the coverage area of the third target access network device and /Or the third indication information is used to instruct to increase the transmission power of the first access network device.

In this embodiment of the present application, when a second access network device meets at least one of the following conditions, the third instruction information is sent:

the second quantity is greater than the third quantity threshold;

The second throughput is greater than the third throughput threshold.

When the third target access network device sends the third indication information, the third target access network device reduces the coverage area.

When the first access network device receives the third indication information, the transmission power is increased. Optionally, the first access network device enables the transmitting function.

The fourth instruction information sent by the first access network device to the fourth target access network device, the fourth instruction information is used to instruct to reduce the coverage area of the fourth target access network device and/or for Instructing to increase the transmit power of the first access network device, and the fourth target access network device is a second one of the at least one second access network device except the third target access network device. Access network equipment.

At this time, the fourth target access network device receives fourth instruction information sent by the first access network device, and the fourth instruction information is used to instruct to reduce the coverage area of the fourth target access network device. and/or used to instruct to increase the transmit power of the first access network device.

When the fourth target access network device receives the fourth indication information, the fourth target access network device reduces the coverage area.

The method for the third target access network device or the fourth target access network device to reduce the coverage area includes at least one of the following:

Improve transmission bandwidth;

Increase the modulation order of the modulation method;

Reduce transmit power.

In this embodiment of the present application, the manner in which the second access network device reduces the coverage area may be determined based on the manner in which the coverage area is expanded.

In the wireless communication method provided by the embodiment of the present application, when an access network device detects that the number of users in a cell with expanded coverage has increased to a certain threshold or the overall throughput has increased to a certain threshold, it initiates exit from the expanded coverage mode and activates the third The transmitting function of an access network device restores the coverage area of the first access network device and the coverage area of the second access network device.

Next, taking the access network device as gNB as an example, the wireless communication method provided by the embodiment of the present application will be further described.

The power consumption of the base station for transmitting and receiving is related to many factors, such as the size of the transmitting power, the size of the working bandwidth, the level of modulation, whether it works with multiple carriers, the length of transmitting or receiving time, etc. The lower the transmit power, the smaller the bandwidth, the lower the modulation method, single-carrier operation, and the shorter the transmission or reception time, the lower the power consumption of the base station. The embodiment of this application will introduce the energy-saving solution under the cooperation of multiple base stations from the perspective of base station transmission.

As shown in Figure 13, gNB1 and gNB2 are base stations covering neighboring cells, where gNB1 covers area 1 and gNB2 covers area 2. The coverage area of a base station is affected by many factors, such as the size of the transmit power, the size of the bandwidth, the level of the modulation method, etc. By reducing the transmission bandwidth and modulation method, the base station can expand the coverage area of the base station while using the same transmission power. Of course, the peak rate in the cell is limited at this time. In the embodiment of the present application, by expanding the coverage area of a single base station, the power consumption of the base station can be reduced by using only a few base stations to cover all areas.

Scenario 1. As shown in Figure 14, gNB2 covers the coverage area 1 of gNB1 through the expanded coverage area 1.

In Figure 14, gNB1 can turn off the transmit function.

Turning off the transmission function of gNB1 and turning on the function of expanding the coverage area of gNB2 need to be judged based on certain conditions. Although this method can save the power consumption of the base station, it also brings about a decrease in the overall throughput. Therefore, when there are high-rate services in the community, it is not appropriate to use this method of reducing base station power consumption.

The function of turning off the transmission function of gNB1 and turning on the expanded coverage area of gNB2 can be triggered by gNB1. When gNB1 detects that the total number of online terminal devices in the cell (area 1) is lower than a certain threshold, or the overall throughput is lower than a certain threshold, it can negotiate with gNB2 to turn off the transmission function of gNB1 and enable gNB2 to expand the coverage area. Function. Among them, online terminal equipment includes terminal equipment in a connected state and/or terminal equipment in an inactive state.

The consultation process includes:

S11, gNB1 initiates a request to turn off transmission, and at the same time requests gNB2 to expand the coverage area.

S12, gNB2 feedback response message.

The response message indicates whether to allow or disallow turning off gNB1 transmission, and whether to agree or not to expand the gNB2 coverage area.

Whether gNB2 agrees to expand its coverage area is determined by the coverage area of gNB2, that is, the business conditions of terminals in area 2. When there is no high throughput demand in area 2 and/or the number of online terminal devices is small (the judgment threshold and method can be similar to gNB1 ), gNB2 will agree to expand its coverage area.

The expansion of the coverage area of gNB2 can be achieved by keeping its own transmit power unchanged (for example, reducing the transmit bandwidth, reducing the modulation method, etc.), or by increasing the transmit power.

S13 and gNB1 turn off the transmission function.

S14 and gNB2 expand coverage area.

Area 3 covers area 1 after gNB2 expands the coverage area.

S15. gNB2 activates gNB1 to resume the transmitting function.

After gNB2 monitors that the number of online terminals in area 3 has increased to a certain threshold or the overall throughput has increased to a certain threshold, gNB2 initiates exit from the expanded coverage area mode to activate gNB1 to resume transmission function so that gNB1's coverage area 1 and gNB2 coverage area 2 .

Since the transmit power of terminals located in coverage area 1 is usually limited, their transmitted signals are difficult to be received and demodulated by gNB2. Therefore, the following methods can be adopted for the receiving function of gNB1:

Method 1. gNB1 retains the function of receiving and demodulating signals transmitted by terminal equipment in area 1.

As shown in Figure 15, gNB1 retains the function of receiving and demodulating signals transmitted by terminal 1 in area 1. At this time, the downlink signal of terminal 1 will be sent by gNB2 through the downlink DL, and the uplink signal of terminal 1 will be sent by gNB1. Uplink UL1 receives, and gNB1 demodulates the received uplink signal. The uplink signal of terminal 2 under gNB2 will be received by gNB2 through UL2.

Method 2: gNB1 retains the function of receiving signals transmitted by terminal equipment in area 1, and the demodulation function is performed by gNB2.

As shown in Figure 16, gNB1 receives the transmitted signal from the terminal device in area 1 and transparently forwards it to gNB2, and gNB2 demodulates it.

After gNB2 expands the downlink coverage, it can cover area 1, but the transmit power of terminal 1 is relatively small and difficult to be received and demodulated by gNB2. Therefore, through the method described in Figure 13, gNB1 receives the uplink signal of terminal 1 and forwards the received uplink signal to gNB2, which is equivalent to expanding the uplink coverage area of terminal 1.

The air interface between terminal 1 and gNB1 uses uplink (UL) 1. gNB1 can forward the uplink signal of terminal 1 through the air interface or through the interface between base stations. The interface between base stations may be an Xn interface.

The carrier frequency of UL1, that is, the uplink carrier frequency of terminal 1, may be the same as or different from the uplink carrier frequency of gNB2.

The uplink carrier frequency of terminal 1 is the same as the uplink carrier frequency of gNB2, and gNB1 can be transparent to terminal 1. After gNB1 and gNB2 complete the negotiation of gNB1 turning off the transmission function and gNB2 expanding the coverage area, gNB1 will be used as the uplink relay base station of gNB2. Terminal 1 accesses the gNB2 base station through gNB1, and finally maintains uplink and downlink connections with gNB2.

The uplink carrier frequency of terminal 1 is different from that of gNB2. gNB1 can transparently forward the uplink signal of terminal 1 to gNB2. In this case, gNB2 is required to have the ability to receive and demodulate the UL1 frequency.

If gNB2 does not have the ability to receive and demodulate the carrier frequency of UL1, gNB1 needs to convert the frequency of the received uplink signal to the uplink frequency of gNB2.

When the reception of gNB1 is combined with the transmission of gNB2 to provide uplink and downlink services for terminal 1, the relationship between gNB1 and gNB2 can be as follows:

1. gNB1 serves as the anchor base station of terminal 1. gNB1 configures gNB2 as the downlink carrier base station of terminal 1. All downlink signals of terminal 1 are transmitted or forwarded by gNB2, and all uplink signals are received by gNB1.

The anchor base station is responsible for signaling connection control between the terminal and the base station.

In this relationship, when terminal 1 moves to an area other than area 1 in area 3 after gNB2 expands the coverage area, the anchor base station of terminal 1 will be triggered to switch from gNB1 to gNB2. Terminal 1 needs to initiate uplink random access on gNB2, and gNB2 will subsequently provide uplink services and downlink services.

2. gNB2 serves as the anchor base station of terminal 1, and gNB2 configures gNB1 as the uplink carrier base station of terminal 1. All downlink signals of terminal 1 are transmitted by gNB2, and all uplink signals are received by gNB1.

In this way, when terminal 1 moves to an area other than area 1 in area 3, the anchor base station handover of terminal 1 will not be triggered. However, since gNB2 will provide uplink and downlink services in the future, when gNB2 does not support the carrier frequency of UL1, gNB2 needs to reconfigure the uplink carrier of terminal 1 to switch from gNB1 to gNB2.

When terminal 1 moves from area 1 to an area outside area 1 in area 3, mobility management is triggered, so that gNB1 provides uplink services for terminal 1 and switches to gNB2 providing uplink services for terminal 1. The methods for switching the uplink service of terminal 1 from gNB1 to gNB2 include:

Switching method 1, base station indication

When the anchor base station is gNB1, gNB1 knows its transmit power situation through the power headroom (PHR) reported by terminal 1. When the transmit power of terminal 1 is not enough to support the uplink service, for example, the uplink signal received by gNB1 If the SINR is too low, gNB1 will instruct terminal 1 to initiate random access on gNB2, and gNB2 will perform uplink and downlink service transmission.

When the anchor base station is gNB2, gNB1 can know its transmit power through the PHR reported by terminal 1. When the transmit power of terminal 1 is not enough to support the uplink service, for example, the SINR of the uplink signal received by gNB1 is too low, etc., gNB1 will Instruct gNB2 to reconfigure the uplink carrier of terminal 1, and then gNB2 will transmit the uplink and downlink services.

Switching method 2, terminal measurement

gNB1 (the anchor base station is gNB1) or gNB2 (the anchor base station is gNB2) configures terminal 1 to measure the downlink signal strength of gNB2. When the downlink signal strength is higher than a certain threshold, terminal 1 initiates random access on gNB2 (anchor base station When the base station is gNB1) or gNB2 reconfigures the uplink carrier of terminal 1 (when the anchor base station is gNB2), and gNB2 performs uplink and downlink service transmission.

Scenario 2. Multiple base stations achieve coverage of gNB1 Area 1 by expanding the coverage area.

As shown in Figure 17, gNB2 and gNB3 achieve coverage of gNB1's coverage area 1 through expanded coverage areas, namely expanded coverage area 2 and expanded coverage area 3. Terminals in coverage area 1 may be in the expanded coverage area of gNB2. Coverage area 2 may also be in gNB3's expanded coverage area 3. Compared with the negotiation, configuration and forwarding processes between gNB1 and gNB2 in Scenario 1, in Figure 17 gNB1 needs to determine whether the terminal is located in the expanded coverage area of gNB2 or the expanded coverage area of gNB3.

The negotiation process is as follows:

S21. When gNB1 detects that the number of online terminals in area 1 is lower than a certain threshold or the overall throughput in the cell is lower than a certain threshold, gNB1 will negotiate with gNB2 and gNB3 so that gNB1 can turn off the transmission function, and gNB2 and gNB3 Expand the downlink coverage area.

S22, gNB2 and gNB3 expand the downlink coverage area, and gNB1 configures terminal 1 to measure the downlink signal strength of neighboring cells gNB2 and gNB3 respectively.

S23. The terminal reports the measured downlink signal strengths of gNB2 and gNB3. Based on this, gNB1 determines the gNB expanded coverage area where terminal 1 is located. As shown in Figure 18, terminal 1 is in the expanded coverage area of gNB3, the uplink signal of terminal 1 is sent to gNB1, and the terminal 1 receives the downlink signal sent by gNB3. Here, the content described in scenario one may be applicable to terminal 1, gNB1 and gNB3.

When terminal 1 moves from the expanded coverage area of gNB3 to the expanded coverage area of gNB2, if gNB1 adopts pure reception mode, or reception and demodulation mode, then, if gNB1 is the anchor base station, it will be reconfigured. The downlink carrier base station is the downlink carrier of gNB2; when gNB3 is the anchor base station, a handover process will be initiated to switch the anchor base station of terminal 1 from gNB3 to gNB2.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of this application. For example, each specific technical feature described in the above-mentioned specific embodiments can be combined in any suitable way without conflict. In order to avoid unnecessary repetition, this application will no longer describe various possible combinations. Specify otherwise. For another example, any combination of various embodiments of the present application can be carried out. As long as they do not violate the idea of the present application, they should also be regarded as the contents disclosed in the present application. For another example, on the premise of no conflict, each embodiment described in this application and/or the technical features in each embodiment can be arbitrarily combined with the existing technology, and the technical solution obtained after the combination shall also fall within the scope of this application. protected range.

It should also be understood that in the various method embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in this application. The implementation of the examples does not constitute any limitations. In addition, in the embodiments of this application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate that the transmission direction of signals or data is from the station. The first direction to the user equipment of the cell, "uplink" is used to indicate that the transmission direction of the signal or data is the second direction from the user equipment of the cell to the site, and "sidelink" is used to indicate that the transmission direction of the signal or data is A third direction sent from User Device 1 to User Device 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of this application, the term "and/or" is only an association relationship describing associated objects, indicating that three relationships can exist. Specifically, A and/or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

Figure 19 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. It is applied to the first access network equipment. As shown in Figure 19, the wireless communication device 1900 includes:

The first communication unit 1901 is configured to send first indication information to at least one second access network device, where the first indication information is used to request expansion of the coverage area of the second access network device and/or to request Reduce the transmit power of the first access network device;

The first control unit 1902 is configured to reduce the transmit power of the first access network device upon receiving second instruction information sent by each of the at least one second access network device. , the second instruction information is used to instruct to expand the coverage area of the second access network device and/or to instruct to reduce the transmission power of the first access network device.

The first quantity is less than a first quantity threshold, and the first quantity is the number of terminal devices in the connected state and/or the number of terminal devices in the inactive state under the first access network device;

The first throughput is less than a first throughput threshold, and the first throughput is the service throughput of the first access network device.

In some embodiments, the first terminal device sends an uplink signal to the first access network device and receives a downlink signal sent by the first target access network device. The network equipment is located in the first coverage area before reducing the transmission power and is located in the first area after the first access network equipment reduces the transmission power. The first coverage area is before the first access network equipment reduces the transmission power. The coverage area of A second access network device among the at least one second access network device.

In some embodiments, the first target access network device is the second access network device with the strongest signal strength of the measurement signal received by the first terminal device among the at least one second access network device.

In some embodiments, if the anchor access network device of the first terminal device is the first access network device, the apparatus 1900 further includes:

A first configuration unit configured to configure the first target access network device to send a downlink signal to the first terminal device.

In some embodiments, if the anchor access network device of the first terminal device is the first target access network device, the apparatus 1900 further includes:

The second configuration unit is configured to be configured by the first target access network device to receive the uplink signal sent by the first terminal device.

In some embodiments, when the uplink signal is demodulated by the first target access network device, the uplink signal is forwarded by the first access network device to the first target access network. equipment.

In some embodiments, the interface used to forward the uplink signal from the first access network device to the first target access network device includes at least one of the following:

An air interface and a first interface, where the first interface is an interface between the first access network device and the first target access network device.

In some embodiments, when the uplink signal is forwarded through the air interface, at least one of the following processes is performed before the uplink signal is forwarded:

power amplification;

frequency conversion.

In some embodiments, if the first terminal device moves from the first area to the second area, the receiving device of the uplink signal is changed from the first access network device to the first target access device. network equipment, the second area is an area in the second coverage area that does not overlap with the first coverage area.

In some embodiments, the method for changing the receiving device of the uplink signal from the first access network device to the first target access network device includes one of the following:

In some embodiments, if the first terminal device moves from the first area to the third area, the sending device of the downlink signal is changed from the first target access network device to the second target access network device, The first area is an area where the first coverage area overlaps with the second coverage area, the third area is an area where the first coverage area overlaps with the third coverage area, and the second coverage area is the area where the first coverage area overlaps with the third coverage area. The coverage area after the first target access network device expands the coverage area, the third coverage area is the coverage area after the second target access network device expands the coverage area, and the second target access network device is The at least one second access network device is a second access network device that is different from the first target access network device.

In some embodiments, the method for changing the sending device of the downlink signal from the first target access network device to the second target access network device includes one of the following:

In some embodiments, the first communication unit 1901 is also configured to:

Receive third indication information sent by a third target access network device, where the third target access network device is any second access network device among the at least one second access network device, and the third indication The information is used to instruct to reduce the coverage area of the third target access network device and/or the third instruction information is used to instruct to increase the transmission power of the first access network device.

In some embodiments, the first communication unit 1901 is also configured to:

Send fourth instruction information to a fourth target access network device, where the fourth instruction information is used to instruct to reduce the coverage area of the fourth target access network device and/or to instruct to increase the coverage area of the first access network device. The transmit power of the device, and the fourth target access network device is a second access network device in the at least one second access network device except the third target access network device.

Figure 20 is a schematic diagram 2 of the structural composition of a wireless communication device provided by an embodiment of the present application, which is applied to the second access network equipment. As shown in Figure 20, the wireless communication device 2000 includes:

The second communication unit 2001 is configured to receive first indication information sent by the first access network device, where the first indication information is used to request to expand the coverage area of the second access network device and/or to request to reduce the coverage area of the second access network device. The transmit power of the first access network device;

The second control unit 2002 is configured to expand the coverage area when sending second instruction information to the first access network device, where the second instruction information is used to instruct to expand the coverage of the second access network device. area and/or used to indicate reducing the transmit power of the first access network device.

The second number is less than the second number threshold, and the second number is the number of terminal devices in the connected state and/or the number of terminal devices in the inactive state under the second access network device;

The second throughput is less than a second throughput threshold, and the second throughput is the service throughput of the second access network device.

Reduce emission bandwidth;

Reduce the modulation order of the modulation method;

Increase transmit power.

In some embodiments, the second access network device is the first target access network device, and the first terminal device sends an uplink signal to the first access network device and receives the first target access network device. The downlink signal sent by the device, the first terminal device is located in the first coverage area before the first access network device reduces the transmission power and is located in the first area after the first access network device reduces the transmission power, The first coverage area is the coverage area before the first access network equipment reduces its transmission power, and the first area is the second coverage area after the first target access network equipment expands its coverage area and the The area where the first coverage area overlaps.

In some embodiments, the first target access network device is a second access network with the strongest signal strength of the measurement signal received by the first terminal device among at least one second access network device that expands the coverage area. equipment.

In some embodiments, apparatus 2000 further includes:

The third configuration unit is configured to send a downlink signal to the first terminal device by the first access network device if the anchor access network device of the first terminal device is the first access network device. .

In some embodiments, apparatus 2000 further includes:

The fourth configuration unit is configured to configure the first access network device to receive the uplink sent by the first terminal device if the anchor access network device of the first terminal device is the first target access network device. Signal.

In some embodiments, the uplink signal is demodulated by the first access network device or demodulated by the second access network device.

In some embodiments, when the uplink signal is demodulated by the second access network device, the uplink signal is forwarded by the first access network device to the first target access network device. .

power amplification;

frequency conversion.

The first terminal device initiates a random access process on the second access network device;

In some embodiments, the second access network device is the first target access network device or the second target access network device, the first terminal device moves from the first area to the third area, and the downlink The signal sending device is changed from the first target access network device to the second target access network device, the first area is an area where the first coverage area and the second coverage area overlap, and the third area is the area where the first coverage area and the third coverage area overlap, the first coverage area is the coverage area before the first access network device reduces the transmission power, and the second coverage area is the first target access area. The coverage area after the network access device expands the coverage area, and the third coverage area is the coverage area after the second target access network device expands the coverage area.

The strength of the downlink signal received by the first terminal device is lower than a third strength threshold;

The strength of the downlink signal sent by the second target access network device received by the first terminal device is higher than a fourth strength threshold.

In some embodiments, the second access network device is a third target access network device, and the second communication unit 2001 is further configured to:

Send third instruction information to the first access network device, where the third instruction information is used to instruct to reduce the coverage area of the third target access network device and/or the third instruction information is used to instruct to increase the coverage area of the third target access network device. The transmit power of the first access network device.

In some embodiments, the second access network device is a fourth target access network device, and the second communication unit 2001 is further configured to:

Receive fourth instruction information sent by the first access network device, where the fourth instruction information is used to instruct to reduce the coverage area of the fourth target access network device and/or to instruct to increase the first access network device. The transmit power of the device connected to the network.

Those skilled in the art should understand that the relevant description of the wireless communication device in the embodiment of the present application can be understood with reference to the relevant description of the wireless communication method in the embodiment of the present application.

Figure 21 is a schematic structural diagram of a communication device 2100 provided by an embodiment of the present application. The communication device may be a terminal device or a network device, where the network device may include an access network device. The communication device 2100 shown in Figure 21 includes a processor 2110. The processor 2110 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in Figure 21, the communication device 2100 may further include a memory 2120. The processor 2110 can call and run the computer program from the memory 2120 to implement the method in the embodiment of the present application.

The memory 2120 may be a separate device independent of the processor 2110, or may be integrated into the processor 2110.

Optionally, as shown in Figure 21, the communication device 2100 can also include a transceiver 2130. The processor 2110 can control the transceiver 2130 to communicate with other devices. Specifically, it can send information or data to other devices, or receive other devices. Information or data sent by the device.

Among them, the transceiver 2130 may include a transmitter and a receiver. The transceiver 2130 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 2100 can be specifically a network device according to the embodiment of the present application, and the communication device 2100 can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details will not be repeated here. .

Optionally, the communication device 2100 can be a mobile terminal/terminal device according to the embodiment of the present application, and the communication device 2100 can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For the sake of simplicity, , which will not be described in detail here.

Figure 22 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 2200 shown in Figure 22 includes a processor 2210. The processor 2210 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in Figure 22, the chip 2200 may also include a memory 2220. The processor 2210 can call and run the computer program from the memory 2220 to implement the method in the embodiment of the present application.

The memory 2220 may be a separate device independent of the processor 2210, or may be integrated into the processor 2210.

Optionally, the chip 2200 may also include an input interface 2230. The processor 2210 can control the input interface 2230 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the chip 2200 may also include an output interface 2240. The processor 2210 can control the output interface 2240 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of brevity, the details will not be described again.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiment of the present application. For the sake of simplicity, here No longer.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Figure 23 is a schematic block diagram of a communication system 2300 provided by an embodiment of the present application. As shown in Figure 23, the communication system 2300 includes a terminal device 2310 and a network device 2320.

Among them, the terminal device 2310 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 2320 can be used to implement the corresponding functions implemented by the access network device in the above method. For the sake of brevity, this is not mentioned here. Again.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip and has signal processing capabilities. During the implementation process, each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available processors. Programmed logic devices, discrete gate or transistor logic devices, discrete hardware components. Each method, step and logical block diagram disclosed in the embodiment of this application can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which is used as an external cache. By way of illustration, but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

It should be understood that the above memory is an exemplary but not restrictive description. For example, the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiment of the present application. , for the sake of brevity, will not be repeated here.

An embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of brevity, they are not included here. Again.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, no further details will be given here.

An embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of simplicity , which will not be described in detail here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the various methods implemented by the mobile terminal/terminal device in the embodiments of the present application. The corresponding process, for the sake of brevity, will not be repeated here.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

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, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

A wireless communication method, the method includes:

The first access network device sends first indication information to at least one second access network device. The first indication information is used to request to expand the coverage area of the second access network device and/or to request to reduce the coverage area of the second access network device. The transmitting power of the first access network equipment;

When the first access network device receives the second instruction information sent by each second access network device in the at least one second access network device, reduce the transmit power of the first access network device. , the second instruction information is used to instruct to expand the coverage area of the second access network device and/or to instruct to reduce the transmission power of the first access network device.
The method according to claim 1, wherein the conditions for sending the first indication information include at least one of the following:

The first quantity is less than a first quantity threshold, and the first quantity is the number of terminal devices in the connected state and/or the number of terminal devices in the inactive state under the first access network device;

The first throughput is less than a first throughput threshold, and the first throughput is the service throughput of the first access network device.
The method according to claim 1 or 2, wherein the first terminal device sends an uplink signal to the first access network device and receives a downlink signal sent by the first target access network device, and the first terminal device The first access network device is located in the first coverage area before reducing the transmission power and is located in the first area after the first access network device reduces the transmission power. The first coverage area is the first access network device. The coverage area before the network access device reduces the transmission power, the first area is the area where the second coverage area after the first target access network equipment expands the coverage area overlaps with the first coverage area, and the first coverage area overlaps with the first coverage area. The target access network device is a second access network device among the at least one second access network device.
The method according to claim 3, wherein the first target access network device is the second access network device with the strongest signal strength of the measurement signal received by the first terminal device among the at least one second access network device. Access network equipment.
The method according to claim 3 or 4, wherein the anchor access network device of the first terminal device is the first access network device or the first target access network device.
The method according to claim 5, wherein if the anchor access network device of the first terminal device is the first access network device, the method further includes:

The first access network device configures the first target access network device to send a downlink signal to the first terminal device.
The method according to claim 5, wherein if the anchor access network device of the first terminal device is the first target access network device, the method further includes:

The first access network device is configured by the first target access network device to receive an uplink signal sent by the first terminal device.
The method according to any one of claims 3 to 7, wherein the uplink signal is demodulated by the first access network device or demodulated by the first target access network device.
The method according to claim 8, wherein when the uplink signal is demodulated by the first target access network device, the uplink signal is forwarded by the first access network device to the third target access network device. A target access network device.
The method according to claim 9, wherein the interface used to forward the uplink signal from the first access network device to the first target access network device includes at least one of the following:

An air interface and a first interface, where the first interface is an interface between the first access network device and the first target access network device.
The method according to claim 9, wherein when the uplink signal is forwarded through the air interface, at least one of the following processes is performed before the uplink signal is forwarded:

power amplification;

frequency conversion.
The method according to any one of claims 3 to 11, wherein if the first terminal equipment moves from the first area to the second area, the receiving equipment of the uplink signal moves from the first access area to the second area. The network device is changed to the first target access network device, and the second area is an area in the second coverage area that does not overlap with the first coverage area.
The method according to claim 12, wherein the condition for determining that the first terminal device moves from the first area to the second area includes one of the following:

The signal strength of the uplink signal received by the first access network device is lower than a first strength threshold;

The signal strength of the downlink signal received by the first terminal device is higher than the second strength threshold.
The method according to claim 12 or 13, wherein the changing method of changing the receiving device of the uplink signal from the first access network device to the first target access network device includes one of the following:

The first terminal device initiates a random access process on the first target access network device;

The first target access network device configures the uplink carrier of the first terminal device as the first target uplink carrier, and the first target uplink carrier is the uplink carrier of the first target access network device.
The method according to any one of claims 3 to 14, wherein if the first terminal equipment moves from the first area to the third area, the sending equipment of the downlink signal accesses the network from the first target area. The device is changed to a second target access network device, the first area is an area where the first coverage area overlaps with the second coverage area, and the third area is where the first coverage area overlaps with a third coverage area. area, the second coverage area is the coverage area after the first target access network equipment expands the coverage area, and the third coverage area is the coverage area after the second target access network equipment expands the coverage area , the second target access network device is a second access network device different from the first target access network device among the at least one second access network device.
The method according to claim 15, wherein the condition for determining that the first terminal device moves from the first area to the third area includes one of the following:

The signal strength of the downlink signal sent by the first target access network device received by the first terminal device is lower than a third strength threshold;

The signal strength of the downlink signal sent by the second target access network device received by the first terminal device is higher than a fourth strength threshold.
The method according to claim 15 or 16, wherein the changing method of changing the sending device of the downlink signal from the first target access network device to the second target access network device includes one of the following:

The first access network device configures the second target access network device to send a downlink signal to the first terminal device;

The first terminal device initiates a random access process on the second target access network device, and the second target access network device configures the first access network device to receive the Upward signal.
The method according to any one of claims 1 to 17, wherein the method further comprises:

The first access network device receives third indication information sent by a third target access network device, and the third target access network device is any second access network device among the at least one second access network device. network equipment, the third instruction information is used to instruct to reduce the coverage area of the third target access network equipment and/or the third instruction information is used to instruct to increase the transmission power of the first access network equipment.
The method according to any one of claims 18, wherein the method further comprises:

The first access network device sends fourth indication information to a fourth target access network device, where the fourth indication information is used to instruct to reduce the coverage area of the fourth target access network device and/or to indicate Increase the transmit power of the first access network device, and the fourth target access network device is a second access network device in the at least one second access network device except the third target access network device. Network access equipment.
A wireless communication method, the method includes:

The second access network device receives the first indication information sent by the first access network device. The first indication information is used to request to expand the coverage area of the second access network device and/or to request to reduce the coverage area of the second access network device. The transmit power of the first access network device;

When the second access network device sends second instruction information to the first access network device, the coverage area is expanded, and the second instruction information is used to instruct to expand the coverage of the second access network device. area and/or used to indicate reducing the transmit power of the first access network device.
The method according to claim 20, wherein the sending conditions of the second indication information include at least one of the following:

The second number is less than the second number threshold, and the second number is the number of terminal devices in the connected state and/or the number of terminal devices in the inactive state under the second access network device;

The second throughput is less than a second throughput threshold, and the second throughput is the service throughput of the second access network device.
The method according to claim 20 or 21, wherein the method for the second access network device to expand the coverage area includes at least one of the following:

Reduce emission bandwidth;

Reduce the modulation order of the modulation method;

Increase transmit power.
The method according to any one of claims 20 to 22, wherein the second access network device is a first target access network device, and the first terminal device sends an uplink signal to the first access network device. , and receives the downlink signal sent by the first target access network device, the first terminal device is located in the first coverage area and the first access network device is located in the first coverage area before the first access network device reduces the transmit power. The network equipment is located in the first area after reducing the transmission power. The first coverage area is the coverage area before the first access network equipment reduces the transmission power. The first area is the expanded area of the first target access network equipment. The area where the second coverage area after the coverage area overlaps the first coverage area.
The method according to claim 23, wherein the first target access network device is the one with the strongest signal strength of the measurement signal received by the first terminal device among at least one second access network device extending the coverage area. Second access network equipment.
The method according to claim 23, wherein the anchor access network device of the first terminal device is the first access network device or the first target access network device.
The method according to claim 25, wherein if the anchor access network device of the first terminal device is the first access network device, the method further includes:

The first target access network device is configured by the first access network device to send a downlink signal to the first terminal device.
The method according to claim 25, wherein if the anchor access network device of the first terminal device is the first target access network device, the method further includes:

The first target access network device configures the first access network device to receive an uplink signal sent by the first terminal device.
The method according to any one of claims 23 to 27, wherein the uplink signal is demodulated by the first access network device or demodulated by the second access network device.
The method according to claim 28, wherein in the case where the uplink signal is demodulated by the second access network device, the uplink signal is forwarded by the first access network device to the first Target access network equipment.
The method according to claim 29, wherein the interface used to forward the uplink signal from the first access network device to the first target access network device includes at least one of the following:

An air interface and a first interface, where the first interface is an interface between the first access network device and the first target access network device.
The method according to claim 29, wherein when the uplink signal is forwarded through the air interface, at least one of the following processes is performed before the uplink signal is forwarded:

power amplification;

frequency conversion.
The method according to any one of claims 23 to 31, wherein if the first terminal equipment moves from the first area to the second area, the receiving equipment of the uplink signal moves from the first access area to the second area. The network device is changed to the first target access network device, and the second area is an area in the second coverage area that does not overlap with the first coverage area.
The method according to claim 32, wherein the condition for determining that the first terminal device moves from the first area to the second area includes one of the following:

The signal strength of the uplink signal received by the first access network device is lower than a first strength threshold;

The signal strength of the downlink signal received by the first terminal device is higher than the second strength threshold.
The method according to claim 32 or 33, wherein the changing method of changing the uplink signal receiving device from the first access network device to the first target access network device includes one of the following:

The first terminal device initiates a random access process on the second access network device;

The first target access network device configures the uplink carrier of the first terminal device as the first target uplink carrier, and the first target uplink carrier is the uplink carrier of the first target access network device.
The method according to any one of claims 20 to 34, wherein the second access network device is a first target access network device or a second target access network device, and the first terminal device is from the first target access network device. One area moves to a third area, the sending device of the downlink signal is changed from the first target access network device to the second target access network device, and the first area is a first coverage area and a second The area where coverage areas overlap, the third area is the area where the first coverage area overlaps with the third coverage area, and the first coverage area is the coverage area before the first access network device reduces the transmission power, and the The second coverage area is the coverage area after the first target access network device expands the coverage area, and the third coverage area is the coverage area after the second target access network device expands the coverage area.
The method according to claim 35, wherein the condition for determining that the first terminal device moves from the first area to the third area includes one of the following:

The strength of the downlink signal received by the first terminal device is lower than a third strength threshold;

The strength of the downlink signal sent by the second target access network device received by the first terminal device is higher than a fourth strength threshold.
The method according to claim 35 or 36, wherein the changing method of changing the sending device of the downlink signal from the first target access network device to the second target access network device includes one of the following:

The first access network device configures the second target access network device to send a downlink signal to the first terminal device;

The first terminal device initiates a random access process on the second target access network device, and the second target access network device configures the first access network device to receive the Upward signal.
The method according to any one of claims 20 to 37, wherein the second access network device is a third target access network device, and the method further includes:

The third target access network device sends third indication information to the first access network device, where the third indication information is used to instruct to reduce the coverage area and/or the coverage area of the third target access network device. The third instruction information is used to instruct to increase the transmission power of the first access network device.
The method according to any one of claims 20 to 37, wherein the second access network device is a fourth target access network device, and the method further includes:

The fourth target access network device receives fourth instruction information sent by the first access network device, and the fourth instruction information is used to instruct to reduce the coverage area of the fourth target access network device and/or Used to instruct to increase the transmit power of the first access network device.
A wireless communication device including:

A first communication unit configured to send first indication information to at least one second access network device, where the first indication information is used to request to expand the coverage area of the second access network device and/or to request to reduce the coverage area of the second access network device. The transmit power of the first access network device;

The first control unit is configured to reduce the transmit power of the first access network device upon receiving second instruction information sent by each second access network device in the at least one second access network device, The second instruction information is used to instruct to expand the coverage area of the second access network device and/or to instruct to reduce the transmit power of the first access network device.
A wireless communication device including:

The second communication unit is configured to receive first indication information sent by the first access network device, where the first indication information is used to request to expand the coverage area of the second access network device and/or to request to reduce the coverage area of the second access network device. The transmitting power of the first access network device;

The second control unit is configured to expand the coverage area when sending second instruction information to the first access network device, where the second instruction information is used to instruct to expand the coverage area of the second access network device. and/or used to instruct to reduce the transmit power of the first access network device.
A communication device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute as described in any one of claims 1 to 19 method, or perform the method described in any one of claims 20 to 39.
A chip, including: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 19, or executes claim 20 The method described in any one of to 39.
A computer-readable storage medium for storing a computer program, the computer program causing the computer to perform the method as described in any one of claims 1 to 19, or to perform the method as described in any one of claims 20 to 39 Methods.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method according to any one of claims 1 to 19, or to perform the method according to any one of claims 20 to 39.
A computer program that causes a computer to perform the method described in any one of claims 1 to 19, or to perform the method described in any one of claims 20 to 39.