WO2019061370A1

WO2019061370A1 - Signal transmission method and apparatus

Info

Publication number: WO2019061370A1
Application number: PCT/CN2017/104676
Authority: WO
Inventors: 关响生; 余政; 程型清
Original assignee: 华为技术有限公司
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2019-04-04

Abstract

The present application provides a signal transmission method and apparatus. The method comprises: a network device determining a first unmanned aerial vehicle cell, the first unmanned aerial vehicle cell comprising at least two synchronized physical cells; and the network device sending instruction information, the instruction information being used to instruct an unmanned aerial vehicle device to access the first unmanned aerial vehicle cell. The embodiments of the present application can avoid frequent switching between physical cells, helping to reduce influence on the continuity of services.

Description

Signal transmission method and device

Technical field

The present application relates to communication systems and, more particularly, to a method and apparatus for signal transmission.

Background technique

When the network equipment services the drone equipment, the downlink signal reception of the drone equipment is interfered by a plurality of other network equipments, and the uplink signal transmission of the drone equipment also interferes with the uplink signal of the ground terminal equipment.

The traditional scheme adopts Coordinated Multiple Points (CoMP) technology. The CoMP technology adopts a cooperative set, and the physical cells in the cooperative set jointly transmit or receive to improve the reliability of signal transmission.

However, in the conventional solution, when the UAV device moves from the coverage of one physical cell in the cooperation set to the coverage of another physical cell in the cooperation set, it may be necessary to initiate physical cell handover, and frequent handover may occur. Affect the continuity of the business.

Summary of the invention

The present application provides a method and apparatus for signal transmission that can help reduce frequent handovers.

In a first aspect, a method for signal transmission is provided, the method comprising: determining, by a network device, a first unmanned cell, the first unmanned cell comprising at least two synchronized physical cells; the network device transmitting indication information, The indication information is used to indicate that the drone device accesses the first drone cell.

The network device determines a first unmanned cell including at least two synchronized physical cells, and indicates, by the indication information, that the drone device accesses the first unmanned cell, such that the drone device can determine the connection according to the indication information. Into the first unmanned cell, thereby avoiding frequent handovers between physical cells, helping to reduce the impact on the continuity of the service.

In some possible implementations, the method further includes: the network device sending scheduling information, where the scheduling information is used to indicate a first time-frequency resource configured for the UAV device, the first time-frequency resource and the second time The second time-frequency resource is a time-frequency resource configured by the network device included in the physical cell of the first unmanned cell, and is configured by the terminal device in the coverage area; the network device is in the first time-frequency resource The drone device transmits signals.

The network device can negotiate the configuration of time-frequency resources between network devices included in different physical cells in the first unmanned cell, and avoid interference between different physical cells.

In some possible implementations, the method further includes: the network device transmitting at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel in a multicast single frequency network MBSFN subframe, The UAV common channel includes at least one of a UAV synchronization channel, a UAV broadcast channel, and a UAV random access channel.

The network device can avoid interference caused by the common channel transmitted in the non-MBSFN subframe to the common channel of the drone.

In some possible implementations, the method further includes: the network device transmitting a drone reference signal; the network device receiving a drone reference signal response message, the drone reference signal response message being the drone device according to the Determining the UAV reference signal; the network device determines, according to the UAV reference signal response message, that the UAV device is Whether to switch from the first drone cell to the second drone cell, the first drone cell is a UAV cell to which the UAV device currently belongs.

The network device sends the drone reference signal to the drone device, and the drone device can measure whether to switch between the UAV cells in units of the drone cell, reduce the switching frequency, and ensure the signal transmission quality.

In some possible implementations, the indication information includes at least one bit, and the first value of the at least one bit is used to indicate that the UAV device accesses the first UAV cell.

The network device indicates whether the drone device accesses the first unmanned cell by using the value of at least one bit, and the resource overhead is relatively low.

In some possible implementations, the method further includes: the network device transmitting data on the first time-frequency resource, and all physical cells in the first unmanned cell except the physical cell to which the network device belongs The network device in the middle transmits the data on the first time-frequency resource.

All physical cells included in the first unmanned cell may include the same data on the same time-frequency resource, thereby avoiding signal interference in the unmanned cell.

In some possible implementations, the method further includes: the network device transmitting data on the first time-frequency resource, and all physical cells in the first unmanned cell except the physical cell to which the network device belongs The network devices in the network do not send data in the first time-frequency resource.

This can avoid signal interference in the drone cell.

In a second aspect, a method for signal transmission is provided, the method comprising: receiving, by the drone device, indication information, the indication information indicating that the UAV device accesses a first UAV cell, the first UAV cell The at least two synchronized physical cells are included; the UAV device determines to access the first unmanned cell according to the indication information.

The UAV device receives indication information that is sent by the network device to indicate that the UAV device accesses the first UAV cell, and according to the indication information, may determine to access the first UAV cell, thereby avoiding physical cell inter-cell Frequent switching helps reduce the impact on business continuity.

In some possible implementations, the method further includes: the UAV device receiving scheduling information, where the scheduling information is used to indicate a first time-frequency resource configured for the UAV device, the first time-frequency resource and the first The second time-frequency resource is different, and the second time-frequency resource is a time-frequency resource configured by the network device in the first unmanned cell to be a terminal device in the coverage area; the UAV device is on the first time-frequency resource Transmission signal.

The UAV device can receive the configuration of the time-frequency resources between the network devices included in the different physical cells in the first UAV cell negotiated by the network device, and avoid interference between different physical cells.

In some possible implementations, the method further includes: the UAV device receiving at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel on a multicast single frequency network MBSFN subframe. In one aspect, the UAV common channel includes at least one of a UAV synchronization channel, a UAV broadcast channel, and a UAV random access channel.

The terminal device can avoid interference caused by the common channel transmitted in the non-MBSFN subframe to the common channel of the drone.

In some possible implementations, the method further includes: the UAV device receiving the UAV reference signal; the UAV device determining the UAV reference signal response message according to the UAV reference signal, the unmanned The machine reference signal response message is used by the network device to determine whether to switch from the first drone cell to the second drone cell, where the first drone cell is a UAV cell to which the UAV device currently belongs; The drone device transmits the drone reference signal response message to the network device.

The UAV device can measure whether to switch between UAV cells in units of UAV cells, reduce the switching frequency, and ensure the signal transmission quality.

In some possible implementations, the indication information includes at least one bit, and the UAV device determines, according to the indication information, that accessing the first UAV cell includes: the UAV device according to the at least one bit The first value is determined to access the first unmanned cell.

The terminal device determines whether to access the first unmanned cell by using the value of at least one bit, and the resource overhead is relatively low.

In some possible implementations, the method further includes: the UAV device receiving data sent by the at least two network devices on the first time-frequency resource, where each of the at least two network devices is the first A network device included in at least two physical cells in a drone cell.

The UAV device receives all of the physical cells included in the first UAV cell to include the same data on the same time-frequency resource, thereby avoiding signal interference in the UAV cell.

In some possible implementations, the method further includes: the UAV device receiving data sent by a network device on the first time-frequency resource, where the one of the first UAV cells belongs to the network device The network devices of other physical cells outside the physical cell do not send data on the first time-frequency resource.

In a third aspect, a method for signal transmission is provided, the method comprising: obtaining, by a drone device, a parameter value; the drone device determining, according to the parameter value, whether to access a drone cell, the drone cell including At least two synchronized physical cells; the UAV device sends an access request for requesting access to the UAV cell if it is determined to access the UAV cell.

The UAV device can obtain a parameter value, and determine whether to access the UAV cell according to the parameter value, and send an access request to request access to the UAV cell when determining to access the UAV cell, thereby Avoiding frequent handovers between physical cells helps reduce the impact on business continuity.

In some possible implementations, determining, by the UAV device, whether to access the UAV cell according to the parameter value includes: determining, by the UAV device, that the parameter value is greater than or equal to a preset threshold, determining Enter the drone cell.

The UAV device determines the access to the UAV cell according to the relationship between the parameter value and the preset threshold, and reduces the calculation amount of the UAV device, thereby saving the power consumption of the UAV device.

In some possible implementations, the parameter value includes at least one of a reference signal received power value, a received interference power value, a height value, and a speed value.

In some possible implementations, the UAV channel includes at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel, and the UAV common channel includes a UAV synchronization channel. At least one of a drone broadcast channel and a drone random access channel.

The UAV channel may include at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel, and the UAV device receiving the UAV channel can avoid the channel of the physical cell in the conventional scheme. The interference caused.

In a fourth aspect, a device for signal transmission is provided, which may be a network device or a chip in a network device. The device has the functionality to implement the various embodiments of the first aspect described above. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible design, when the device is a network device, the network device includes: a processing module and a transceiver module, The processing module can be, for example, a processor, and the transceiver module can be, for example, a transceiver, and the transceiver includes a radio frequency circuit. Optionally, the network device further includes a storage module, which may be, for example, a memory. When the network device includes a storage unit, the storage unit is configured to store a computer execution instruction, the processing module is coupled to the storage unit, and the processing module executes a computer execution instruction stored by the storage unit to cause the network device to perform the first aspect described above The method of signal transmission of any one.

In another possible design, when the device is a chip in a network device, the chip includes: a processing module and a transceiver module, and the processing module may be, for example, a processor, and the transceiver module may be, for example, the chip. Input/output interface, pins or circuits, etc. The processing module may execute a computer-executable instruction stored by the storage unit to cause the chip within the terminal to perform the method of signal transmission of any of the above aspects. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the network device, such as a read-only memory ( Read-only memory (ROM) or other types of static storage devices, random access memory (RAM), etc. that can store static information and instructions.

The processor mentioned in any of the above may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above. The first aspect of the method of signal transmission is performed by an integrated circuit.

In a fifth aspect, the present application provides a device for signal transmission, which may be a drone device or a chip in a drone device. The device has the functionality to implement the various embodiments of the second aspect described above. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible design, when the device is a drone device, the drone device includes: a processing module and a transceiver module, and the processing module may be, for example, a processor, and the transceiver module may be, for example, a transceiver. The transceiver includes a radio frequency circuit. Optionally, the drone device further includes a storage unit, which may be, for example, a memory. When the drone device includes a storage unit, the storage unit is configured to store a computer execution instruction, the processing module is coupled to the storage unit, and the processing module executes a computer execution instruction stored by the storage unit to cause the drone device to execute A method of signal transmission according to any of the above aspects.

In another possible design, when the device is a chip in the UAV device, the chip includes: a processing module and a transceiver module, and the processing module may be, for example, a processor, and the transceiver module may be, for example, the Input/output interfaces, pins or circuits on the chip. The processing module may execute a computer-executable instruction stored by the storage unit to cause the chip within the drone device to perform the method of signal transmission of any of the above second aspects. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the UAV device, such as a ROM or Other types of static storage devices, RAM, etc. that can store static information and instructions.

Wherein, the processor mentioned in any of the above may be a CPU, a microprocessor, an ASIC, or an integrated circuit of one or more programs for controlling the method of signal transmission of the second aspect.

According to a sixth aspect, there is provided a communication system comprising: the apparatus of the above fourth aspect and the apparatus of the above fifth aspect.

In a seventh aspect, the present application provides a device for signal transmission, which may be a drone device or a chip in a drone device. The device has the functionality to implement the various embodiments of the third aspect described above. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more of the above features Corresponding modules.

In a possible design, when the device is a drone device, the drone device includes: a processing module and a transceiver module, and the processing module may be, for example, a processor, and the transceiver module may be, for example, a transceiver. The transceiver includes a radio frequency circuit. Optionally, the drone device further includes a storage unit, which may be, for example, a memory. When the drone device includes a storage unit, the storage unit is configured to store a computer execution instruction, the processing module is coupled to the storage unit, and the processing module executes a computer execution instruction stored by the storage unit to cause the drone device to execute A method of signal transmission according to any of the above third aspects.

In another possible design, when the device is a chip in the UAV device, the chip includes: a processing module and a transceiver module, and the processing module may be, for example, a processor, and the transceiver module may be, for example, the Input/output interfaces, pins or circuits on the chip. The processing module may execute a computer-executable instruction stored by the storage unit to cause the chip within the drone device to perform the method of signal transmission of any of the above third aspects. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the UAV device, such as a ROM or Other types of static storage devices, RAM, etc. that can store static information and instructions.

Wherein, the processor mentioned in any of the above may be a CPU, a microprocessor, an ASIC, or an integrated circuit of one or more programs for controlling the method of signal transmission of the third aspect.

In an eighth aspect, a communication system is provided, the communication system comprising:

Network device and apparatus of the above seventh aspect.

According to a ninth aspect, a computer storage medium is provided, the program storage medium storing program code for indicating execution of any one of the first aspect, the second aspect, and the third aspect, or any possible The instructions of the method in the implementation.

A tenth aspect, a computer program product comprising instructions, which when executed on a computer, cause the computer to perform any of the first, second, and third aspects above, or any possible implementation thereof Methods.

Based on the above solution, the network device determines a first unmanned cell including at least two synchronized physical cells, and indicates, by the indication information, that the drone device accesses the first unmanned cell, such that the drone device according to the indication The information can be determined to access the first unmanned cell, thereby avoiding frequent handovers between physical cells, and helping to reduce the impact on service continuity.

DRAWINGS

1 is a schematic diagram of a communication system according to an embodiment of the present application;

2 is a schematic flowchart of a method for signal transmission according to an embodiment of the present application;

3 is a schematic diagram of a method of signal transmission according to another embodiment of the present application;

4 is a schematic flowchart of a method for signal transmission according to still another embodiment of the present application;

FIG. 5 is a schematic block diagram of an apparatus for signal transmission according to an embodiment of the present application; FIG.

6 is a schematic structural diagram of an apparatus for signal transmission according to an embodiment of the present application;

7 is a schematic block diagram of an apparatus for signal transmission according to another embodiment of the present application;

FIG. 8 is a schematic structural diagram of an apparatus for signal transmission according to another embodiment of the present application; FIG.

9 is a schematic block diagram of an apparatus for signal transmission according to another embodiment of the present application;

FIG. 10 is a schematic structural diagram of an apparatus for signal transmission according to another embodiment of the present application; FIG.

FIG. 11 is a schematic structural diagram of a communication system according to an embodiment of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division multiple access. (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, and the future fifth generation (5th Generation, 5G) system or new radio (New Radio, NR) and so on.

The terminal device in the embodiment of the present application may refer to a user equipment, an access terminal, 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 User device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or in the future evolution of the Public Land Mobile Network (PLMN) The terminal device and the like are not limited in this embodiment of the present application.

The network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may be a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA). Base Transceiver Station (BTS), which may also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in an LTE system (Evolutional The NodeB, eNB or eNodeB) may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a future. The network device in the 5G network or the network device in the PLMN network in the future is not limited in this embodiment.

The communication system of the embodiment of the present application may include at least one terminal device and a network device. For example, FIG. 1 is a schematic diagram of a communication system of an embodiment of the present application. The communication system in FIG. 1 may include six terminal devices (ie, terminal device 10 - terminal device 60) and network device 70. The network device 70 is used to provide communication services for each terminal device and access the core network. The terminal device 10-60 can perform uplink/downlink transmission with the network device 70 respectively through the communication link, wherein the communication link received by the network device 70 and received by the terminal device 10-60 is downlink transmission, and the terminal device 10-60 transmits, The communication link received by network device 70 is an uplink transmission.

Further, the terminal devices 40-60 may also constitute a communication system in which the terminal device 50 may transmit information to at least one of the terminal device 40 and the terminal device 60.

In the conventional solution, when the UAV device moves from the coverage of one physical cell in the cooperation set to the coverage of another physical cell in the cooperation set, it may be necessary to initiate physical cell handover, and frequent handover may affect the service. Continuity.

FIG. 2 shows a schematic flow chart of a method of signal transmission in one embodiment of the present application.

The method may be applied to a communication system including a plurality of physical cells, each of the plurality of physical cells may include at least one network device.

Optionally, each of the multiple physical cells may further include at least one terminal device.

201. The network device determines a first unmanned cell, where the first unmanned cell includes at least two synchronized physical cells.

Optionally, the network device may be a network device included in any one of the at least two synchronized physical cells.

Optionally, the network device may select at least two synchronized physical cells from the plurality of physical cells as the first unmanned cell.

It should be understood that the synchronization between the at least two physical cells may be an accurate synchronization of subframe boundaries between physical cells, thereby avoiding mutual interference of the transmitted and received signals.

Optionally, the network device may also learn the first unmanned cell from the core network device. That is, the first drone cell can be determined by the core network device. Alternatively, the first UAV cell may be determined by another network device to inform the network device, or the UAV device may determine the first UAV cell, which is not limited in this application.

Optionally, a plurality of UAV cells may be included in the communication system, and the number of physical cells included in each UAV cell may be the same or different, which is not limited in this application.

Optionally, the physical cell included in each of the UAVs in the communication system may be predefined or dynamically changed, which is not limited in this application.

202. The network device sends indication information, where the indication information indicates that the drone device accesses the first unmanned cell. Accordingly, the drone device can receive the indication information.

The network device may send indication information to the UAV device in the coverage area, or may be sent to the UAV device in the coverage area of the first UAV cell by forwarding of other network devices.

That is to say, the network devices included in the at least two synchronized physical cells included in the first unmanned cell can communicate with each other.

Optionally, the indication information may be represented by at least one bit, and the first value of the at least one bit is used to indicate that the drone device accesses the first unmanned cell.

Optionally, the at least one bit may be carried in Downward Control Information (DCI).

For example, the indication information is represented by a bit. If the bit value is “0”, the UAV device is connected to the first UAV cell; if the bit value is “1”, the indication is no. The human equipment does not access the first drone cell. Alternatively, if the bit value is “1”, the UAV device is connected to the first UAV cell; if the bit value is “0”, the UAV device does not access the first device. UAV cell.

That is to say, if the indication information is represented by one bit, the first value may be "0" or "1". In a specific implementation, the network device may be pre-agreed with the drone device, or may be indicated in advance by the indication information. Please do not limit this.

Optionally, the network device may send a common channel on a Multicast Broadcast Single Frequency Network (MBSFN) subframe, where the common channel carries the indication information.

203. The UAV device determines to access the first UAV cell according to the indication information.

Optionally, after the UAV device determines to access the first UAV cell, it may start listening to the UAV channel to access the first UAV cell.

Optionally, after determining that the UAV device accesses the first UAV cell, the UAS device sends an access request to request access to the first UAV cell.

Optionally, the UAV channel includes at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel.

Optionally, the UAV common channel includes at least one of a UAV synchronization channel, a UAV broadcast channel, and a UAV random access channel.

Alternatively, the network device can transmit the drone channel on the MBSFN subframe. Accordingly, the drone device can receive the drone channel on the MBSFN subframe.

Optionally, the UAV channel includes at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel, where the UAV common channel includes a UAV synchronization channel, a drone At least one of a broadcast channel and a drone access channel.

Accordingly, the network device can transmit the drone channel continuously, or periodically.

Optionally, after the network device determines that the UAV device accesses the first UAV cell, the network device may further send scheduling information, where the scheduling information is used to indicate that the first time-frequency resource is configured for the UAV device, where the The first time-frequency resource is different from the second time-frequency resource, and the second time-frequency resource is a time-frequency resource configured by the network device included in the physical cell in the first unmanned cell.

Specifically, the network device sends scheduling information to the UAV device, where the first time-frequency resource indicated by the scheduling information and the network device included in the physical cell in the first UAV cell are time-frequency configured for the terminal device in the coverage area. The resources are different. That is, the network device can negotiate the configuration of time-frequency resources between network devices included in different physical cells in the first unmanned cell, and avoid interference between different physical cells.

For example, as shown in FIG. 3, in the conventional solution, the network device in the physical cell 5 and the network device in the physical cell 6 do not mutually consider each other when the time-frequency resources are allocated to the terminal devices in the respective coverage areas, thereby causing signal interference. . In the embodiment of the present application, the physical cell 5 and the physical cell 6 belong to the same UAV cell 2, so that the network device in the physical cell 5 or the network device in the physical cell 6 can negotiate with each other, so that the network device in the physical cell 5 The time-frequency resources configured for the terminal devices in the coverage area are different from the time-frequency resources configured by the network devices in the physical cell 6 for the terminal devices in the coverage area, thereby avoiding signal interference.

It should be understood that the network device included in the other physical cells configures the time-frequency resource for the terminal device, and the terminal device may be the foregoing various ground terminal devices, which is not limited by this application.

Optionally, the UAV device can send an uplink signal at the first time-frequency resource. Correspondingly, the network device receives the uplink signal at the first time-frequency resource.

Optionally, the network device may also send a downlink signal on the first time-frequency resource. Correspondingly, the drone device receives the downlink signal at the first time-frequency resource.

Optionally, the scheduling information may be carried in a drone control channel.

Optionally, after the network device determines that the UAV device accesses the first UAV cell, the network device may further send the UAV reference signal, so that the UAV device in the first UAV cell range receives the UAV The human machine reference signal and feedback the UAV reference signal response message according to the UAV reference signal, and the network device determines whether to switch from the current UAV cell to the other UAV cell according to the UAV reference signal response message.

Specifically, the network device may send the drone reference signal to the drone device within the coverage of all physical cells in the first drone cell. The drone device receives the drone reference signal and determines a response message of the drone reference signal according to the strength of the drone reference signal. The strength of the UAV reference signal can indicate whether the location of the UAV device is close to the edge of the first UAV cell, and the like. The response message of the UAV reference signal may indicate the strength of the UAV reference signal, and the network device may determine whether to perform cell handover according to the response message of the UAV reference signal. That is to say, the UAV device can measure whether to switch between the UAV cells in units of the UAV cell, reduce the switching frequency, and ensure the signal transmission quality.

For example, as shown in FIG. 3, when the network device determines that the UAV device is about to move from the coverage of the UAV cell 1 to the coverage of the UAV cell 2, the network device can serve the UAV device. The cell 1 switches to the drone cell 2.

Alternatively, the network device can transmit the drone reference signal continuously or periodically.

Optionally, after the network device determines that the UAV device accesses the first UAV cell, the network device sends data on the first time-frequency resource, and the network device in the first UAV cell belongs to The network device in all physical cells except the physical cell transmits the data on the first time-frequency resource. That is to say, all the physical cells included in the first unmanned cell can include the same data on the same time-frequency resource, thereby avoiding signal interference in the unmanned cell.

It should be understood that all the physical cells included in the first unmanned cell may include the same data on the same time-frequency resource, which may be understood as the network device included in all the physical cells in the first unmanned cell. Send data to the drone device in the form of a Single Frequency Network (SFN).

Optionally, the method further includes: the network device sends data on the first time-frequency resource, and the network devices in all the physical cells except the physical cell to which the network device belongs in the first unmanned cell The data is not sent in the first time-frequency resource.

This can avoid signal interference in the drone cell.

Therefore, in the method for signal transmission in the embodiment of the present application, the network device determines a first unmanned cell including at least two synchronized physical cells, and indicates, by using the indication information, that the drone device accesses the first unmanned cell, In this way, the UAV device can determine to access the first UAV cell according to the indication information, thereby avoiding frequent handover between physical cells, and helping to reduce the impact on service continuity.

FIG. 4 shows a schematic flow chart of a method of signal transmission in another embodiment of the present application.

401. The drone device obtains a parameter value.

The UAV device obtains the parameter value of the UAV device, and may obtain the detected parameter value in the UAV device's own processing device, or may notify the UAV device after the other device determines, and the application is This is not limited.

Optionally, the parameter value includes a Reference Signal Received Power (RSRP), Receiving at least one of an interference power value, a height value, and a speed value.

402. The UAV device determines whether to access the UAV cell according to the parameter value.

It should be noted that the UAV cell in the embodiment of the present application may be the same as the first UAV cell or the second UAV cell shown in FIG. 3, which is not limited in this application.

Optionally, the UAV device determines to access the UAV cell if it determines that the parameter value is greater than or equal to a preset threshold.

Optionally, the preset threshold may be a fixed value or may be dynamically changed. This application does not limit this.

Specifically, if the parameter value is a height value, the UAV device determines to access the UAV cell when detecting that its own height is greater than or equal to a preset threshold height. For example, the preset threshold height is the height of the base station currently serving the drone device.

If the parameter value is a speed value, the drone device determines to access the unmanned cell when detecting that its own speed is greater than or equal to a preset threshold speed. For example, the preset threshold speed is 160 km/h.

If the parameter value is RSRP, the UAV device determines to access the UAV cell when it detects that its RSRP value is greater than or equal to the preset threshold RSRP.

Optionally, the UAV device may determine to access the UAV cell if it is determined that the parameter value is less than a preset threshold, which is not limited in this application.

Optionally, if the parameter value is at least two of the reference signal receiving power, the altitude information, and the speed information, the preset threshold may also be at least two, and respectively correspond to at least two of the parameter values.

Optionally, if the parameter value is RSRP, the UAV device may further determine that the difference between the RSRP of the physical cell serving the UAV device is less than or equal to the first preset threshold, and the number of other physical cells. When the second preset threshold is greater than or equal to, it is determined to access the unmanned cell.

Optionally, the first preset threshold may be 6 dB, and the second preset threshold may be 4.

It should be understood that the first preset threshold and the second threshold may take other values, which is not limited in this application.

403. The UAV device sends an access request to access the UAV cell when determining to access the UAV cell.

When the UAV device determines to access the UAV cell, the UAV device can actively send an access request, so that the network device sends the UAV channel in time after receiving the access request, thereby improving the UAV device. Access efficiency.

Optionally, the UAV channel may include at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel, where the UAV common channel includes a UAV synchronization channel, and no one At least one of a machine broadcast channel and a drone random access channel.

Alternatively, the drone device can receive the drone channel on an MBSFN subframe.

Alternatively, the drone device can receive the network device continuously, or periodically transmit the drone channel.

Therefore, in the signal transmission method of the embodiment of the present application, the UAV device can determine the parameter value, and determine whether to access the UAV cell according to the parameter value, and receive the unmanned person when determining the access to the UAV cell. Machine channels, thus avoiding frequent handovers between physical cells, helping to reduce the impact on the continuity of the service.

It should be understood that the specific examples in the embodiments of the present application are only intended to help those skilled in the art to better understand the embodiments of the present application.

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. Implementation process Form any limit.

The method of signal transmission according to an embodiment of the present application is described in detail above, and the apparatus for signal transmission of the embodiment of the present application will be described below.

FIG. 5 shows an apparatus 500 for signal transmission in an embodiment of the present application. As shown in FIG. 5, the device 500 can be a network device.

It should be understood that the apparatus 500 may correspond to a network device in each method embodiment, and may have any function of the network device in the method.

The processing module 510 is configured to determine a first unmanned cell, where the first unmanned cell includes at least two synchronized physical cells;

The transceiver module 520 is configured to send indication information, where the indication information is used to indicate that the drone device accesses the first unmanned cell.

Optionally, the transceiver module 520 is further configured to send scheduling information, where the scheduling information is used to indicate a first time-frequency resource configured for the UAV device, where the first time-frequency resource is different from the second time-frequency resource, The second time-frequency resource is a time-frequency resource configured by the network device included in the physical cell in the first unmanned cell to be a terminal device in the coverage area;

The transceiver module 520 is further configured to transmit a signal to the drone device at the first time-frequency resource.

Optionally, the transceiver module 520 is further configured to send at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel in a multicast single frequency network MBSFN subframe, the UAV The common channel includes at least one of a drone synchronization channel, a drone broadcast channel, and a drone random access channel. .

Optionally, the indication information includes at least one bit, and the first value of the at least one bit is used to indicate that the UAV device accesses the first UAV cell.

Optionally, the transceiver module 520 is further configured to send data on the first time-frequency resource, where the first time-frequency resource is used in the first unmanned cell except the physical cell to which the network device belongs. The network device in all the physical cells sends the data, or the network devices in all the physical cells except the physical cell to which the network device belongs in the first unmanned cell are not sending data in the first time-frequency resource. .

Optionally, the apparatus 500 for signal transmission in the embodiment of the present application may be a network device, or may be a chip in the network device.

It should be understood that the apparatus 500 for signal transmission according to an embodiment of the present application may correspond to the network device in the method of signal transmission of the embodiment of FIG. 7, and the above and other management operations of the respective modules in the apparatus 500 for signal transmission and/or The functions or functions are respectively implemented in order to implement the corresponding steps of the foregoing various methods, and are not described herein for brevity.

Optionally, if the device 500 for signal transmission is a network device, the transceiver module 520 in the embodiment of the present application may be implemented by the transceiver 610, and the processing module 510 may be implemented by the processor 620. As shown in FIG. 6, the apparatus 600 for signal transmission may include a transceiver 610, a processor 620, and a memory 630. The memory 630 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 620. The transceiver 610 can include a radio frequency circuit. Optionally, the network device further includes a storage unit.

The storage unit can be, for example, a memory. When the network device includes a storage unit, the storage unit is configured to store a computer execution instruction, the processing module is coupled to the storage unit, and the processing module executes a computer execution instruction stored by the storage unit to cause the network device to perform the foregoing signal transmission. method.

Optionally, if the device 500 for signal transmission is a chip in a network device, the chip includes a processing module 510 and a transceiver module 520. The transceiver module 520 can be implemented by the transceiver 610, and the processing module 510 can be implemented by the processor 620. achieve. The transceiver module can be, for example, an input/output interface, a pin or a circuit, and the like. The processing module can execute computer executed instructions stored by the storage unit. The storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit outside the chip in the terminal, such as a read-only memory (ROM) or a storable memory. Other types of static storage devices for static information and instructions, random access memory (RAM), and the like.

FIG. 7 is a schematic block diagram of an apparatus 700 for signal transmission according to another embodiment of the present application. As shown in Figure 7, the device 700 can be a drone device.

It should be understood that the apparatus 700 may correspond to the drone apparatus in the various method embodiments and may have any of the functions of the drone apparatus in the method.

The transceiver module 710 is configured to receive indication information, where the indication information indicates that the UAV device accesses the first UAV cell, where the first UAV cell includes at least two synchronized physical cells;

The processing module 720 is configured to determine to access the first unmanned cell according to the indication information.

Optionally, the transceiver module 710 is further configured to receive scheduling information, where the scheduling information is used to indicate a first time-frequency resource configured for the UAV device, where the first time-frequency resource is different from the second time-frequency resource, The second time-frequency resource is a time-frequency resource configured by the network device in the first unmanned cell to be a terminal device in a coverage area;

The transceiver module is further configured to transmit a signal on the first time-frequency resource.

Optionally, the transceiver module 710 is further configured to receive at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel on the MBSFN subframe, where the UAV common channel includes none At least one of a human-machine synchronization channel, a drone broadcast channel, and a drone random access channel.

Optionally, the indication information includes at least one bit, and the processing module is specifically configured to:

And determining to access the first unmanned cell according to the first value of the at least one bit.

Optionally, the transceiver module is further configured to receive data sent by the at least one network device on the first time-frequency resource, where each of the at least one network device is a physical cell in the first unmanned cell Network equipment included.

Optionally, the apparatus 700 for signal transmission in the embodiment of the present application may be a drone device or a chip in the drone device.

It should be understood that the apparatus 700 for signal transmission according to an embodiment of the present application may correspond to the drone apparatus in the method of signal transmission of the embodiment of FIG. 7, and the above and other management operations of the respective modules in the apparatus 700 for signal transmission The functions and/or functions are respectively omitted in order to implement the corresponding steps of the foregoing various methods, and are not described herein for brevity.

Optionally, if the device 700 for signal transmission is a drone device, the transceiver module 710 in the embodiment of the present application may be implemented by the transceiver 810, and the processing module 720 may be implemented by the processor 820. As shown in FIG. 8, device 800 can include a transceiver 810, a processor 820, and a memory 830. The memory 830 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 820. The transceiver can include a radio frequency circuit, and optionally, the drone device further includes a storage unit.

Optionally, if the signal transmission device 700 is a chip in the UAV device, the chip includes a processing module 720 and a transceiver module 710. The transceiver module 710 can be, for example, an input/output interface on a chip, a pin or a circuit, and the like. Processing module 720 can execute computer executed instructions stored by the storage unit.

Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the terminal, such as a read-only memory (ROM). Or other types of static storage devices, random access memory (RAM), etc. that can store static information and instructions. The storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit outside the chip in the terminal, such as a read-only memory (ROM) or a storable memory. Other types of static storage devices for static information and instructions, random access memory (RAM), and the like.

It should be understood that processor 620 or processor 820 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The above processor may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It can be understood that the memory 630 or the memory 830 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 memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory. The volatile memory can be a random access memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), double data rate synchronous SDRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronously connected dynamic random access memory (synchronous link DRAM) SLDRAM) and direct memory bus random access memory (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

FIG. 9 is a schematic block diagram of an apparatus 900 for signal transmission according to another embodiment of the present application. As shown in Figure 9, the device 900 can be a drone device.

It should be understood that the apparatus 900 may correspond to the drone apparatus in the various method embodiments and may have any of the functions of the drone apparatus in the method.

a processing module 910, configured to determine a parameter value;

The processing module 910 is further configured to determine, according to the parameter value, whether to access an unmanned cell, where the unmanned cell includes at least two synchronized physical cells of the multiple physical cells;

The transceiver module 920 is configured to receive an access request for requesting access to the unmanned cell when determining to access the unmanned cell.

Optionally, the processing module 910 is specifically configured to:

In case determining that the parameter value is greater than or equal to a preset threshold, it is determined to access the unmanned cell.

Optionally, the parameter value includes at least one of a reference signal received power value, a received interference power value, a height value, and a speed value.

Optionally, the apparatus 900 for signal transmission in the embodiment of the present application may be a drone device or a chip in the drone device.

It should be understood that the apparatus 900 for signal transmission according to an embodiment of the present application may correspond to the drone apparatus in the method of signal transmission of the embodiment of FIG. 9, and the above and other management operations of the respective modules in the apparatus 900 for signal transmission The functions and/or functions are respectively omitted in order to implement the corresponding steps of the foregoing various methods, and are not described herein for brevity.

Alternatively, if the signal transmission device 900 is a drone device, the transceiver module 910 in the embodiment of the present application may be implemented by the transceiver 1010, and the processing module 920 may be implemented by the processor 1020. As shown in FIG. 10, apparatus 1000 can include a transceiver 1010, a processor 1020, and a memory 1030. The memory 1030 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 1020. The transceiver can include a radio frequency circuit, and optionally, the drone device further includes a storage unit.

Optionally, if the signal transmission device 900 is a chip in the UAV device, the chip includes a processing module 920 and a transceiver module 910. The transceiver module 910 can be, for example, an input/output interface on a chip, a pin or a circuit, and the like. Processing module 920 can execute computer executed instructions stored by the storage unit.

Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the terminal, such as a read-only memory (read) -only memory, ROM) or other types of static storage devices, random access memory (RAM), etc. that can store static information and instructions. The storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the terminal, such as a read-only memory (read-only memory, ROM) or other types of static storage devices, random access memory (RAM), etc. that can store static information and instructions.

It should be understood that the processor 1020 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The above processor may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. Combined with the embodiment of the present application The steps of the disclosed method may be directly embodied by the hardware decoding processor being executed or by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It can be understood that the memory 1030 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 memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory. The volatile memory can be a random access memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), double data rate synchronous SDRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronously connected dynamic random access memory (synchronous link DRAM) SLDRAM) and direct memory bus random access memory (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

FIG. 11 shows a communication system 1100 of an embodiment of the present application, the communication system 1100 comprising:

The apparatus 500 for signal transmission in the embodiment shown in FIG. 5 and the apparatus 700 for signal transmission in the embodiment shown in FIG.

The embodiment of the present application further provides a computer storage medium, which can store program instructions for indicating any of the above methods.

Optionally, the storage medium may be specifically a memory 630, 830 or 1030.

The embodiment of the present application further provides a chip system, including a processor, for supporting a distributed unit, a centralized unit, and a drone device to implement the functions involved in the foregoing embodiments, for example, generating or Processing the data and/or information involved in the above methods.

In one possible design, the chip system further includes a memory for storing program instructions and data necessary for the distributed unit, the centralized unit, and the drone device. The chip system can be composed of chips, and can also include chips and other discrete devices.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in 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 solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division, and the actual implementation may have another division manner, such as multiple units or groups. Pieces can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A method for signal transmission, comprising:

The network device determines a first unmanned cell, the first unmanned cell comprising at least two synchronized physical cells;

The network device sends indication information, where the indication information is used to indicate that the drone device accesses the first unmanned cell.
The method of claim 1 further comprising:

The network device sends scheduling information, where the scheduling information is used to indicate a first time-frequency resource configured for the UAV device, where the first time-frequency resource is different from the second time-frequency resource, and the second time is The frequency resource is a time-frequency resource configured by the network device included in the physical cell in the first unmanned cell to be a terminal device in the coverage area;

The network device transmits a signal to the drone device at the first time-frequency resource.
The method according to claim 1 or 2, wherein the method further comprises:

The network device transmits at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel in a multicast single frequency network MBSFN subframe, where the UAV common channel includes a UAV synchronization At least one of a channel, a drone broadcast channel, and a drone random access channel.
The method according to any one of claims 1 to 3, wherein the indication information comprises at least one bit, and the first value of the at least one bit is used to indicate that the drone device is connected Entering the first drone cell.
The method according to any one of claims 1 to 4, further comprising:

The network device sends data on the first time-frequency resource, and the first time-frequency resource is used in all physical cells except the physical cell to which the network device belongs in the first unmanned cell. The network device sends the data, or the network devices in all the physical cells except the physical cell to which the network device belongs in the first unmanned cell are not transmitting data in the first time-frequency resource.
A method for signal transmission, comprising:

The UAV device receives indication information, the indication information indicating that the UAV device accesses the first UAV cell, and the first UAV cell includes at least two synchronized physical cells;

The UAV device determines to access the first UAV cell according to the indication information.
The method of claim 6 wherein the method further comprises:

The UAV device receives scheduling information, where the scheduling information is used to indicate a first time-frequency resource configured for the UAV device, where the first time-frequency resource is different from the second time-frequency resource, The time-frequency resource is a time-frequency resource configured by the network device in the first unmanned cell to be a terminal device in a coverage area;

The UAV device transmits a signal on the first time-frequency resource.
The method according to claim 6 or 7, wherein the method further comprises:

The UAV device receives at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel on a multicast single frequency network MBSFN subframe, the UAV common channel including none At least one of a human-machine synchronization channel, a drone broadcast channel, and a drone random access channel.
The method according to any one of claims 6 to 8, wherein the indication information includes at least one bit, and the drone device determines to access the first unmanned person according to the indication information. The cell includes:

The UAV device determines to access the first UAV cell according to the first value of the at least one bit.
The method according to any one of claims 6 to 9, wherein the method further comprises:

The UAV device receives data transmitted by at least one network device on a first time-frequency resource, and each of the at least one network device is a network included in a physical cell in the first UAV cell device.
A method for signal transmission, comprising:

The drone device obtains the parameter value;

Determining, by the UAV device, whether to access the UAV cell according to the parameter value, where the UAV cell includes at least two synchronized physical cells;

The UAV device sends an access request for determining access to the UAV cell, and the access request is used to request access to the UAV cell.
The method according to claim 11, wherein the UAV device determines whether to access the UAV cell according to the parameter value, including:

The UAV device determines to access the UAV cell if it is determined that the parameter value is greater than or equal to a preset threshold.
The method according to claim 11 or 12, wherein the parameter value comprises at least one of a reference signal received power value, a received interference power value, a height value, and a speed value.
The method according to any one of claims 11 to 13, wherein the obtaining the parameter values by the drone device comprises:

The drone device receives a drone channel, the drone channel including the parameter value.
The method of claim 14, wherein the UAV channel comprises at least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel, the UAV public The channel includes at least one of a drone synchronization channel, a drone broadcast channel, and a drone access channel.
A device for signal transmission, comprising:

a processing module, configured to determine a first unmanned cell, where the first unmanned cell includes at least two physical cells that are synchronized;

The transceiver module is configured to send indication information, where the indication information is used to indicate that the drone device accesses the first unmanned cell.
The device according to claim 16, wherein the transceiver module is further configured to send scheduling information, where the scheduling information is used to indicate a first time-frequency resource configured for the UAV device, The first time-frequency resource is different from the second time-frequency resource, and the second time-frequency resource is a time-frequency resource configured by the network device included in the physical cell of the first unmanned cell to be a terminal device in the coverage area;

The transceiver module is further configured to transmit a signal to the drone device at the first time-frequency resource.
The device according to claim 16 or 17, wherein the transceiver module is further configured to send a UAV common channel, a UAV control channel, and a UAV downlink sharing in a multicast single frequency network MBSFN subframe. At least one of the channels, the UAV common channel comprising at least one of a UAV synchronization channel, a UAV broadcast channel, and a UAV random access channel.
The apparatus according to any one of claims 16 to 18, wherein the indication information comprises at least one bit, and the first value of the at least one bit is used to indicate that the drone device is connected Into the first no Human-machine community.
The device according to any one of claims 16 to 19, wherein the transceiver module is further configured to send data on a first time-frequency resource, and the first time-frequency resource is used in the first a network device in all physical cells except a physical cell to which the network device belongs in a UAV cell, or the physics of the first UAV cell except the network device The network devices in all physical cells except the cell do not send data in the first time-frequency resource.
A device for signal transmission, comprising:

a transceiver module, configured to receive indication information, where the indication information indicates that the UAV device accesses a first UAV cell, where the first UAV cell includes at least two synchronized physical cells;

And a processing module, configured to determine to access the first unmanned cell according to the indication information.
The device according to claim 21, wherein the transceiver module is further configured to receive scheduling information, where the scheduling information is used to indicate a first time-frequency resource configured for the UAV device, The first time-frequency resource is different from the second time-frequency resource, and the second time-frequency resource is a time-frequency resource configured by the network device in the first unmanned cell to be a terminal device in the coverage area;

The transceiver module is further configured to transmit a signal on the first time-frequency resource.
The device according to claim 21 or 22, wherein the transceiver module is further configured to receive the UAV common channel, the UAV control channel, and the UAV downlink on the MBSFN subframe of the multicast single frequency network. At least one of the shared channels, the UAV common channel comprising at least one of a UAV synchronization channel, a UAV broadcast channel, and a UAV random access channel.
The device according to any one of claims 21 to 23, wherein the indication information comprises at least one bit, and the processing module is specifically configured to:

And determining to access the first unmanned cell according to the first value of the at least one bit.
The device according to any one of claims 21 to 24, wherein the transceiver module is further configured to receive data sent by at least one network device on the first time-frequency resource, where the at least one network device is Each network device is a network device included in a physical cell in the first unmanned cell.
A device for signal transmission, comprising:

a processing module, configured to obtain a parameter value;

The processing module is further configured to determine, according to the parameter value, whether to access an unmanned cell, where the unmanned cell includes at least two synchronized physical cells;

And a transceiver module, configured to send an access request, where the access request is used to request access to the unmanned cell, if it is determined to access the unmanned cell.
The device according to claim 26, wherein the processing module is specifically configured to:

In case determining that the parameter value is greater than or equal to a preset threshold, it is determined to access the drone cell.
The apparatus according to claim 26 or 27, wherein the parameter value comprises at least one of a reference signal received power value, a received interference power value, a height value, and a speed value.
The device according to any one of claims 26 to 28, wherein the processing module is specifically configured to:

A drone channel is received, the drone channel including the parameter value.
Apparatus according to any one of claims 26 to 29 wherein said drone channel comprises At least one of a UAV common channel, a UAV control channel, and a UAV downlink shared channel, the UAV common channel including a UAV synchronization channel, a UAV broadcast channel, and a UAV access channel At least one of them.