CN113170476B

CN113170476B - Communication method and device

Info

Publication number: CN113170476B
Application number: CN201880100087.6A
Authority: CN
Inventors: 谢信乾; 郭志恒; 程型清
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2022-12-02
Anticipated expiration: 2038-12-26
Also published as: CN113170476A; WO2020132988A1

Abstract

A communication method and device are provided, wherein the method comprises the following steps: a first network device sends a first signal to a first terminal device on a first carrier, wherein the first carrier is a carrier shared by the first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; the first network equipment sends first indication information to the first terminal equipment, wherein the first indication information is used for indicating at least one of the following items: whether an interference signal is present in the first signal; a power ratio of the interfering signal to the first signal; and a modulation mode of the interference signal.

Description

Communication method and device

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a communication method and apparatus.

Background

In a broadcast communication network, all network devices in the entire network transmit the same information to all terminal terminals, where the information transmitted by each network device is the same and the information received by each terminal is the same. Considering that the radio signal has path loss when propagating in free space, i.e. the signal strength is weaker the farther away the radio signal propagates, the signal strength received by a terminal closer to the network device in the broadcast communication network is stronger, and the signal strength received by a terminal farther away from the network device is weaker. In order to enable a terminal far away from the network device to correctly receive the broadcast signal, the network device usually transmits the broadcast signal at a lower information rate, so that the terminal near the network device can only obtain the same information rate as the terminal far away from the network device, and cannot obtain a higher information rate, thereby resulting in lower spectral efficiency in the entire network.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a communication method and apparatus, so as to solve the problem of how to improve the spectrum efficiency of a broadcast communication network.

In a first aspect, an embodiment of the present application provides a communication method, including: a first network device sends a first signal to a first terminal device on a first carrier, wherein the first carrier is a carrier shared by the first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; the first network equipment sends first indication information to the first terminal equipment, wherein the first indication information is used for indicating at least one of the following items: whether an interference signal is present in the first signal; a power ratio of the interfering signal to the first signal; a modulation mode of the interference signal.

Through the above method, the first network device indicates, through the first indication information, whether the first signal sent in the first carrier has information such as an interference signal, so that the first terminal device can eliminate the interference signal according to the first indication information, thereby improving the spectrum utilization rate and improving the reliability of receiving the signal in the first carrier.

In an optional embodiment, the method further comprises:

the first network device sends a second signal to the first terminal device on a second carrier, where the second carrier and the first carrier are two carriers of carrier aggregation, the second carrier is a primary carrier, and the first carrier is a secondary carrier.

In an alternative embodiment, the first wireless communication technology is a cellular mobile communication technology, and the second wireless communication technology is a broadcast communication technology.

In an optional implementation manner, the interference signal is a signal sent by a second network device through the first carrier, and the second network device is a network device of the second wireless communication technology.

In an optional embodiment, the first indication information is located in downlink control information DCI;

or, the first indication information is located in radio resource control, RRC, signaling;

or, the first indication information is located in a medium access control MAC signaling.

In a second aspect, an embodiment of the present application provides a communication method, including: a first terminal device receiving a first signal from a first network device on a first carrier; the first carrier is a carrier shared by the first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; the first terminal equipment receives first indication information from the first network equipment; the first indication information is used for indicating at least one of the following items: whether an interference signal is present in the first signal; a power ratio of the interfering signal to the first signal; a modulation mode of the interference signal; and the first terminal equipment demodulates the information carried in the first signal according to the first indication information.

In an optional embodiment, the method further comprises: the first terminal device receives a second signal from the first network device on a second carrier, where the second carrier and the first carrier are two carriers of carrier aggregation, the second carrier is a primary carrier, and the first carrier is a secondary carrier.

In an optional implementation manner, the interference signal is a signal sent by the second network device through the first carrier.

In an optional embodiment, the first indication information is located in downlink control information DCI; or, the first indication information is located in radio resource control, RRC, signaling; or, the first indication information is located in a medium access control MAC signaling.

In a third aspect, an embodiment of the present application provides a communication method, including: determining data information by first network equipment, wherein the first network equipment is network equipment in a first wireless communication technology; the first network equipment sends the data information to second network equipment, and the second network equipment is network equipment in a second wireless communication technology; the first network equipment sends second indication information to the first terminal equipment; the second indication information is used for indicating signal characteristics of a third signal; the third signal is a signal which is sent by the second network device to the first terminal device on the first carrier and is used for bearing the data information.

By the method, the first network device indicates the signal characteristic of the third signal sent in the first carrier wave through the second indication information, so that the first terminal device can receive the third signal in the first carrier wave according to the second indication information, thereby improving the spectrum utilization rate and improving the reliability of receiving the signal in the first carrier wave.

In an optional embodiment, the second indication information is used for indicating at least one of: a subcarrier spacing of the third signal; a modulation mode of the third signal; a coding rate of the third signal; bit positions of the data information in the third signal.

In a fourth aspect, an embodiment of the present application provides a communication method, including: the first terminal equipment receives second indication information from the first network equipment; the second indication information is used for indicating signal characteristics of a third signal; the first network equipment is network equipment in a first wireless communication technology; the first terminal device receiving the third signal from the second network device on a first carrier; the first carrier is a carrier shared by the first network device and the second network device; the second network device is a network device in a second wireless communication technology; and the first terminal equipment demodulates the data information in the third signal according to the second indication information.

In an optional embodiment, the second indication information is located in downlink control information DCI; or, the second indication information is located in Radio Resource Control (RRC) signaling;

in a fifth aspect, an embodiment of the present application provides a network device, where the network device includes a memory, a communication interface, and a processor, where: the memory is used for storing instructions; the processor is configured to execute the instructions stored in the memory and control the communication interface to perform signal reception and signal transmission, and when the processor executes the instructions stored in the memory, the processor is configured to perform the method in the first aspect or any one of the possible designs of the first aspect, or the third aspect or any one of the possible designs of the third aspect.

In a sixth aspect, an embodiment of the present application provides a network device, configured to perform the method in any one of the foregoing first aspect or possible designs of the first aspect, or perform the method in any one of the foregoing third aspect or possible designs of the third aspect, where the network device includes corresponding functional modules, for example, including a processing unit, a transceiver unit, and the like, and is respectively configured to implement the steps in the foregoing method.

In a seventh aspect, an embodiment of the present application provides a terminal device, where the terminal device includes a memory, a transceiver, and a processor, where: the memory is used for storing instructions; the processor is configured to execute the instructions stored by the memory and to control the transceiver to receive and transmit signals, and when the processor executes the instructions stored by the memory, is configured to perform the method of any one of the possible designs of the second or second aspect described above or to perform the method of any one of the possible designs of the fourth or fourth aspect described above.

In an eighth aspect, an embodiment of the present application provides a terminal device, configured to implement the second aspect, or the third aspect, or any one of the methods in the second aspect, or any one of the methods in the fourth aspect, where the terminal device includes corresponding functional modules, for example, includes a processing unit, a transceiver unit, and the like, and is respectively configured to implement the steps in the foregoing methods.

An embodiment of the present application provides a communication apparatus, including: a memory for storing instructions and a processor for executing the instructions stored by the memory, and execution of the instructions stored in the memory causes the processor to perform the method of any one of the possible designs described above.

Embodiments of the present application provide a computer-readable storage medium, which stores computer-readable instructions, and when the computer-readable instructions are read and executed by a communication device, the communication device is caused to perform the method in any one of the above possible designs.

Embodiments of the present application provide a computer program product which, when read and executed by a communication apparatus, causes the communication apparatus to perform a method according to any one of the possible designs described above.

The embodiment of the present application provides a chip, where the chip is connected to a memory, and is used to read and execute a software program stored in the memory, so as to implement the method in any one of the above possible designs.

Drawings

Fig. 1 is a schematic diagram of a network architecture suitable for use in embodiments of the present application;

fig. 2 is a schematic flowchart of a communication method according to an embodiment of the present application;

fig. 3 is a schematic diagram of a frequency spectrum provided in an embodiment of the present application;

fig. 4 is a schematic flowchart of a communication method according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The embodiments of the present application can be applied to broadcast communication networks and various cellular mobile communication networks, for example: new Radio (NR) systems, global system for mobile communication (GSM) systems, code Division Multiple Access (CDMA) systems, wideband Code Division Multiple Access (WCDMA) systems, general Packet Radio Service (GPRS), long Term Evolution (LTE) systems, advanced Long Term Evolution (LTE) systems, LTE-a) systems, universal Mobile Telecommunications System (UMTS), evolved Long Term Evolution (LTE) systems, future communication systems, and other communication systems, without limitation.

The embodiment of the application can be applied to a carrier aggregation technology. For example, as shown in fig. 1, a terminal device 1 accesses a network device 1, and a terminal device 2 and a terminal device 3 access a network device 2. The network device 2 uses carrier 1, and the network device 1 may use carrier 1 and carrier 2 in a carrier aggregation manner, where carrier 2 is a carrier allocated to the network device 1 by a network, that is, the network device 1 and the network device 2 may share carrier 1. In fig. 1, network device 1 may send a signal to terminal device 1 in a unicast manner, network device 2 may be a device in a broadcast system, and network device 2 may send a signal to terminal device 2 and terminal device 3 in a broadcast manner.

In this embodiment, the terminal device may be a device having a wireless transceiving function or a chip that can be disposed in any device, and may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like.

The network device may be a gNB in the NR system, an evolved node B (eNB) in the LTE system, a Base Transceiver Station (BTS) in a global system for mobile communication (GSM) system or a Code Division Multiple Access (CDMA) system, or a base station (nodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system. The network device may also be an Access Point (AP) in a wireless-fidelity (Wi-Fi) system, a broadcast tower, etc.

In conjunction with the foregoing description, as shown in fig. 2, a flow chart of a communication method provided in the embodiment of the present application is shown. Referring to fig. 2, the method includes:

step 201: the first network device transmits a first signal to the first terminal device on a first carrier.

The first carrier is a carrier shared by the first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology.

In the embodiment of the present application, the first signal is not limited, and the first signal may include data information, control command information, and the like. The first signal only needs to be a signal that satisfies the specifications of the first wireless communication technology.

Step 202: the first terminal device receives a first signal from a first network device on a first carrier.

In this embodiment, the first network device of the first wireless communication technology can use the carrier of the second wireless communication technology, and the carrier is understood as a frequency resource, that is, the network of the first wireless communication technology can share the same frequency resource with the second wireless communication technology, so that the overall use efficiency of the frequency resource can be improved.

Optionally, the first wireless communication technology is a cellular mobile communication technology, for example, the first wireless communication technology may be an LTE system, or an NR system; the second wireless communication technology is a broadcast communication technology. That is, the network device of the cellular mobile communication technology shares the same frequency resources as the broadcast communication technology network. It should be noted that, because the threshold effect exists in the broadcast communication technology network, the overall spectrum efficiency of the network is low, so that the network of the cellular mobile communication technology and the broadcast communication technology network share the same frequency resource, and on the premise that the performance of the broadcast communication technology network is not obviously affected, more resources are provided for the cellular mobile communication technology network, and the spectrum utilization efficiency can be improved to the maximum extent.

Optionally, the first network device sends first indication information to the first terminal device.

Wherein the first indication information is used for indicating at least one of the following:

whether an interfering signal is present in the first signal; a power ratio of the interfering signal to the first signal; a modulation mode of the interference signal.

Correspondingly, the first terminal device receives the first indication information from the first network device, and demodulates the information carried in the first signal according to the first indication information.

It should be noted that the first indication information may indicate the three items at the same time, and may also include three fields, each field indicating one of the items, which is not limited in this embodiment of the application.

For the presence or absence of an interfering signal for the first signal, it only comprises two states, namely the presence and absence of interference. It should be noted that, if it indicates that there is an interference signal, the first terminal device needs to delete the interference when receiving the first signal to acquire the information transmitted by the first signal; if it indicates that no interfering signal is present, the first terminal device receives the first signal directly according to the prior art method. It should be noted that the name of the interfering signal is not limited herein, and it should be understood that the essence of the first indication information is to indicate the auxiliary information for the first terminal device so that the first terminal device can receive the first signal by using a suitable receiving method. The interfering signal may also be referred to as other signal, redundant signal, shared signal, etc., or specifically as a signal of the second radio access technology, such as a broadcast signal, etc., or directly as a signal.

For example, in the embodiment of the present application, at least one bit may be used to indicate whether the first signal has an interference signal. For example, when 1 bit is adopted, the value of the bit being 0 may indicate that the first signal does not have an interference signal, and the value of the bit being 1 may indicate that the first signal has an interference signal. Of course, the other way around, that is, the bit value of 1 may indicate that the first signal does not have an interference signal, and the bit value of 0 may indicate that the first signal has an interference signal.

For another example, when 2 bits are used to indicate whether the first signal has the interference signal, a value of 00 for the 2 bits may indicate that the first signal does not have the interference signal, and a value of 11 for the 2 bits may indicate that the first signal has the interference signal. Of course, the above is only an example, and other values may also be used to indicate whether the first signal has the interference signal, which is not limited in this embodiment of the application and is not described herein again.

For the power ratio of the interference signal to the first signal, because the interference signal and the first signal are multiplexed together in a power distribution manner, the power of the interference signal is generally high, and the power of the first signal is low, so that after the first terminal obtains the power ratio of the interference signal to the first signal, the first signal can be determined according to the power ratio, and the communication performance is improved. The present embodiment does not limit the power of the interference signal to be larger than the power of the first signal, and the other way around.

The power ratio of the interference signal to the first signal indicated by the first indication information may have various expressions, for example, the power ratio may be the power of the interference signal to the power of the first signal, the power of the first signal to the power of the interference signal, the sum of the power of the interference signal to the power of the first signal, or the sum of the power of the interference signal to the power of the first signal to the power of the interference signal. It should be noted that the expression of the power matching is only an example, the embodiment is not limited, and other forms equivalent to the power matching also belong to the protection scope of the present invention. For example, if the power ratio of the interfering signal to the first signal is equal to x/y, then the first indication information indicates sqrt (x/y), where sqrt (a) represents the square root (positive number) of a.

Illustratively, the power ratio may be in the form of a ratio of the power of the interfering signal to the power of the first signal, and the power ratio may be 1: 3, 1: 1, 3: 2, etc. It should be noted that the form of the power ratio is not limited to the form of x: y, and may also be in the form of x/y, and may also be in the form of a decimal, for example, z = x/y, that is, the power ratio value indicated by the first indication information is z. For example, when the power of the interference signal is 1: 3 than the power of the first signal, the value of z may be 0.33; when the power of the interference signal is 1: 1 than the power of the first signal, the value of z may be 1; when the power of the interference signal is 3: 2 with respect to the power of the first signal, the value of z may be 1.5, etc., and other cases are not described herein again.

Illustratively, the power ratio may be 2: 5, 1: 1, 1: 2, etc., when the power ratio of the first signal to the power of the interfering signal is a form of the power ratio. It should be noted that the form of the power ratio is not limited to the form of x: y, but may also be the form of x/y, or may also be the form of a decimal number, for example, z = x/y, that is, the power ratio value indicated by the first indication information is z. For example, when the power of the first signal is 2: 5 with respect to the power of the interference signal, the value of z may be 0.4; when the power of the first signal is 1: 1 relative to the power of the interference signal, the value of z may be 1; when the power of the first signal is 1: 2 relative to the power of the interference signal, the value of z may be 0.5, and other cases are not described herein again.

Illustratively, the power ratio is in the form of the sum of the power of the interference signal and the power of the first signal at the power ratio of the first signal, and the power ratio may be 1: 3, 1: 4, 1: 5, or the like. For example, 1: 3 indicates that the power of the first signal is 1 part, the sum of the power of the first signal and the power of the interference signal is 3 parts, and thus the power of the interference signal is 2 parts. It should be noted that the form of the power ratio is not limited to the form of x: y, and may also be the form of x/y, and may also be the form of a decimal number, for example, z = x/y, that is, the power ratio value indicated by the first indication information is z, and the value of z may be 0.33, 0.25, 0.2, and the like, and is not limited herein.

Illustratively, the power ratio is in the form of the sum of the power of the interference signal and the power of the first signal at the power ratio of the interference signal, and the power ratio may be 1: 3, 2: 3, 3: 5, or the like. For example, 1: 3 indicates that the power of the interfering signal is 1 part, the sum of the power of the first signal and the power of the interfering signal is 3 parts, and thus the power of the first signal is 2 parts. It should be noted that the form of the power ratio is not limited to the form of x: y, but may also be the form of x/y, or may also be the form of a decimal number, for example, z = x/y, that is, the power ratio value indicated by the first indication information is z. When the sum of the power of the interference signal and the power of the first signal is 1: 3, 2: 3, or 3: 5, respectively, the power ratio of the interference signal, z may be 0.33, 0.67, or 0.6, and the like, which is not limited herein.

Illustratively, the power ratio is in the form of a sum of the power of the interfering signal and the power of the first signal to the power of the first signal, and the power ratio may be 3: 1, 3: 2, 5: 2, etc. For example, 5: 2 means that the power of the first signal is 2 parts, the sum of the power of the interference signal and the power of the first signal is 5 parts, and thus the power of the interference signal is 3 parts. It should be noted that the form of the power ratio is not limited to the form of x: y, but may also be the form of x/y, or may also be a decimal form, for example, z = x/y, that is, when the power ratio value indicated by the first indication information is z, for example, when the sum of the power of the interference signal and the power of the first signal is 3: 1, 3: 2, and 5: 2, respectively, and the value of z may be 3, 1.5, and 2.5, and the like, which is not limited herein.

Illustratively, the power ratio is in the form of the sum of the power of the interference signal and the power of the first signal to the power of the interference signal, and the power ratio may be 3: 2, 4: 3, 5: 2, or the like. For example, 4: 3 indicates that the power of the interfering signal is 3 parts, the sum of the power of the interfering signal and the power of the first signal is 4 parts, and thus the power of the first signal is 1 part. It should be noted that the form of the power ratio is not limited to the form of x: y, but may also be the form of x/y, or may also be the form of a decimal number, for example, z = x/y, that is, the power ratio value indicated by the first indication information is z, for example, when the ratio of the sum of the power of the interference signal and the power of the first signal to the power of the interference signal is 3: 2, 4: 3, or 5: 2, respectively, the value of z may be 1.5, 1.333, or 2.5, and is not limited herein.

Illustratively, the power matching is in the form of an index value of the power matching of the interfering signal to the first signal. For example, when the power ratio is 1: 3, 1: 4, or 1: 5, the corresponding index values are 00, 01, and 10. When the index value of the power ratio is 00, the power ratio of the interference signal to the first signal is 1: 3; when the index value of the power ratio is 01, the power ratio of the interference signal to the first signal is 1: 4; when the index value of the power ratio is 10, it indicates that the power ratio of the interference signal to the first signal is 1: 5.

For example, the first network device and the first terminal device may pre-agree on at least one power ratio, such as 2: 1, 3: 1, 4: 1, and the like, and the first indication information may be used to indicate one of the at least one power ratio, and the first terminal device may determine the power ratio of the interfering signal and the first signal accordingly. The number of the at least one power allocation ratio is not limited in this embodiment, and may be 2, 3, 4, or other positive integer. Exemplarily, the number of the power allocation ratios is 4, as shown in table 1 below, the first indication information may indicate 4 states, each state corresponds to a power allocation ratio value, specifically, state 0 corresponds to 1 st power allocation ratio value, state 1 corresponds to 2 nd power allocation ratio value, and so on. After the first terminal device receives the first indication information from the first network device, the first terminal device may determine the power allocation value corresponding to the state according to the state indicated by the first indication information.

TABLE 1

Status of state	Power proportioning
		0	1 st power ratio
1	2 nd power ratio value
		2	3 rd power ratio value
3	4 th power ratio value

Of course, table 1 is merely an example, and other forms of tables may exist and are not illustrated one by one herein.

For the modulation mode of the interference signal, after the first terminal acquires the modulation mode of the interference signal, the first terminal can acquire the first signal in a corresponding demodulation mode, and communication performance is improved.

Generally, the modulation schemes include Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), 64QAM, 256QAM, and the like, and the first network device and the first terminal device may agree in advance with at least one modulation scheme, so that the first indication information may be used to indicate one of the at least one modulation scheme, and the first terminal device may determine the modulation scheme of the interference signal. It should be noted that, the number of the at least one modulation mode is not limited in this embodiment, and may be 2, 3, 4, or other positive integers, which are not illustrated herein.

For example, in this embodiment of the application, an index value may be configured for each modulation scheme, and the first indication information may indicate an index value of a modulation scheme of the interference signal. For example, the first network device and the first terminal device may agree in advance on 4 modulation schemes: QPSK, 16QAM, 64QAM, and 256QAM, and the corresponding index values are 00, 01, 10, and 11, respectively, which can be referred to table 2 specifically.

TABLE 2

When the index value of the modulation scheme indicated by the first indication information sent by the network device is 00, the modulation scheme of the interference signal may be indicated as QPSK; when the index value of the modulation scheme indicated by the first indication information sent by the network device is 01, the modulation scheme may indicate that the modulation scheme of the interference signal is 16QAM; when the index value of the modulation scheme indicated by the first indication information sent by the network device is 10, the modulation scheme of the interference signal may be indicated as 64QAM; when the index value of the modulation scheme indicated by the first indication information sent by the network device is 11, the modulation scheme of the interference signal may be indicated to be 256QAM. Of course, the above are only examples, and other cases are not described again.

Of course, the above is only an example, and the first indication information may also indicate other signal characteristics of the first signal, which is not limited in this embodiment of the application and is not further illustrated in sequence here.

Through the above method flow, the first network device indicates the signal characteristics of the interference signal of the first signal sent in the first carrier wave through the first indication information, so that the first terminal device can eliminate the interference signal according to the first indication information, thereby improving the spectrum utilization rate and improving the reliability of receiving the signal in the first carrier wave. Optionally, the first network device may send the first indication Information in multiple ways, for example, the first indication Information may be carried in Downlink Control Information (DCI), radio Resource Control (RRC) signaling, medium Access Control (MAC) signaling, or the like, which is not illustrated herein one by one.

It should be noted that the first indication information may be carried in one signaling and sent by the first network device to the first terminal device, or may be carried in multiple different signaling and sent by the first network device to the first terminal device. Illustratively, the service duration in the broadcast communication network is longer than that in the cellular mobile communication network, so that for the first terminal device, the interference signal exists for a long time, in this case, whether the interference exists may be carried in RRC or MAC signaling, and the power ratio and/or modulation scheme may be carried in DCI, which can reduce the overhead compared to the case where all the interference characteristics are carried in DCI. For another example, for a broadcast communication network with few broadcast terminals, it may be that all broadcast terminals are in an off state in some time periods, and at this time, the broadcast communication network may not send a broadcast signal, so that the broadcast signal is switched frequently, at this time, the power allocation and the modulation scheme may be carried in RRC or MAC signaling, but whether there is interference that may be carried in DCI, so that overhead may be reduced compared to the case where all interference characteristics are carried in DCI. That is to say, the interference signal characteristics can be carried in at least two of RRC, MAC and DCI signaling, so that different requirements of different scenarios can be met, and it is more flexible than the case where the interference signal characteristics are carried in only one type of signaling.

Optionally, the first network device may send a signal to the first terminal device by using the first carrier and the second carrier in a carrier aggregation manner, that is, the second carrier and the first carrier are two carriers of carrier aggregation. Further, the second carrier is a primary carrier, and the first carrier is a secondary carrier. It should be noted that, since a cell in a cellular mobile communication network generally includes one downlink carrier and one uplink carrier, and the first carrier in this embodiment is a carrier shared with a broadcast communication network, which may only have a downlink, the first network device may use the first carrier in a carrier aggregation manner. In addition, the cellular mobile communication network may define a new type of cell, i.e. the cell includes two downlink carriers and one uplink carrier, thereby enabling the cellular mobile communication network to more conveniently share the same frequency resources with the broadcast communication network.

Optionally, the first network device may further send a second signal to the first terminal device on a second carrier.

In this embodiment of the application, the second signal may include data information, control command information, and the like, which is not limited in this embodiment of the application. The second signal only needs to be a signal that satisfies the specifications of the first wireless communication technology.

For example, as shown in fig. 3, the communication system in which the first network device is located is an NR system, and the communication system in which the second network device is located is a broadcast communication system. The first network device may use a Time Division Duplex (TDD) carrier in the NR system, and the carrier frequency may be 3.5GHz or 4.9GHz, and may use a downlink carrier shared by the NR system and the broadcast communication system, and the carrier frequency may be 700MHz. In fig. 3, D denotes a downlink subframe, and U denotes an uplink subframe.

It should be noted that the first network device and the second network device may share the first carrier by using time division multiplexing, frequency division multiplexing, and non-orthogonal multiplexing. It should be understood that the time division multiplexing manner is that the first network device and the second network device transmit signals on different time periods on the first carrier, for example, the first network device may transmit signals on 1 st, 3 rd, 5 th, 7 th, 9 th 1ms every 10ms, and the second network device may transmit signals on 2 nd, 4 th, 6 th, 8 th, 10 th 1ms every 10ms, so that the signals transmitted by the first network device and the second network device do not interfere with each other. The frequency division multiplexing mode is that the first network device and the second network device transmit signals in different frequency ranges on the first carrier, for example, the first network device may transmit signals in 5MHz with a smaller frequency in the 10MHz first carrier, and the second network device may transmit signals in 5MHz with a larger frequency in the 10MHz first carrier, so that the signals transmitted by the first network device and the second network device do not interfere with each other. The non-orthogonal multiplexing mode is that the first network device and the second network device transmit signals on the same time-frequency resource on the first carrier, for example, the signal of the first network device is distinguished from the signal sent by the second network device in the power dimension, the power of the signal sent by the first network device is smaller, the power of the signal sent by the second network device is larger, and at this time, interference exists between the signals transmitted by the first network device and the second network device.

Since the first carrier is a shared carrier, there may be an interfering signal in the first signal transmitted in the first carrier. Optionally, the interference signal is a signal sent by a second network device through the first carrier, and the second network device is a network device of the second wireless communication technology. The first network device may know that the interference signal is a signal sent by the second network device, but from the perspective of the first terminal device, it does not know the source of the interference signal, so that the first network device may indicate, through the first indication information, a signal characteristic of the interference signal to the first terminal device, so that the first terminal device interferes with the relevant information of the signal, thereby eliminating the interference signal.

In conjunction with the foregoing description, after the first terminal device receives the first indication information, it may determine whether the first signal has interference according to the first indication information. When the first terminal equipment determines that no interference signal exists, the first terminal directly receives a first signal according to the method in the prior art; correspondingly, when the first terminal equipment determines that the interference signal exists, the interference signal is deleted according to the modulation mode of the interference signal and the power ratio of the interference signal to the first signal.

In this embodiment, the first terminal device may further receive, in the first carrier, a third signal sent by the second network device, for this reason, the first network device needs to indicate, through the second indication information, a signal characteristic of the third signal to the first terminal device, and thus the first terminal device may demodulate the third signal. The signal characteristics are general terms of information such as modulation scheme and coding rate of the signal, and do not have a limiting function.

In conjunction with the foregoing description, as shown in fig. 4, a flow chart of a communication method provided in the embodiment of the present application is shown. Referring to fig. 4, the method includes:

step 401: the first network device determines data information and sends the data information to the second network device.

The first network equipment is network equipment in a first wireless communication technology; the second network device is a network device in a second wireless communication technology.

The data information is information of the first wireless communication technology, and specific content of the data information is not limited in this embodiment.

Step 402: the second network device receives the data information from the first network device and sends a third signal carrying the data information to the first terminal device in the first carrier.

In the embodiment of the present application, the specific form of the third signal is not limited, and the third signal only needs to be a signal that satisfies the specification of the second wireless communication technology.

Optionally, the first network device sends the second indication information to the first terminal device.

The second indication information is used for indicating signal characteristics of a third signal; the third signal is a signal that is sent by the second network device to the first terminal device on the first carrier and is used for carrying the data information.

It should be noted that, before the first network device sends the second instruction, the signal characteristic of the third signal sent by the second network device may be obtained, and how to obtain the signal characteristic is not limited in this embodiment of the application. For example, the second network device may send the signal characteristics of the third signal to the first network device, e.g., the second network device may inform the first network device of the subcarrier spacing, modulation scheme, coding rate, etc. of the third signal. Or, information such as the subcarrier interval, the modulation scheme, the coding rate, and the like of the third signal may be agreed in advance between the second network device and the first network device, which is not described herein again.

Optionally, the first terminal device receives the second indication information from the first network device.

Optionally, the first terminal device receives the third signal from the second network device on the first carrier, and demodulates the data information in the third signal according to the second indication information.

Through the above method procedure, the first network device indicates, through the second indication information, the signal characteristic of the third signal sent in the first carrier, so that the first terminal device can receive the third signal in the first carrier according to the second indication information, thereby improving the spectrum utilization rate and improving the reliability of receiving the signal in the first carrier.

Optionally, the first wireless communication technology is a cellular mobile communication technology, for example, the first wireless communication technology may be an LTE system, or an NR system; the second wireless communication technology is a broadcast communication technology.

Optionally, the first network device may send the second indication information in multiple ways, for example, the second indication information may be carried in DCI, RRC signaling, MAC signaling, or the like, and in addition, the second indication information indicates that the signal characteristics of the third signal may also be carried in at least two of RRC, MAC, and DCI signaling, so that different requirements of different scenarios may be met, and the second network device is more flexible than the first network device in that the signal characteristics are carried in only one type of signaling, which is not illustrated herein one by one.

Optionally, the first terminal device may also receive a fourth signal sent by the first network device through a second carrier, and the third signal and the fourth signal are jointly encoded. In the embodiment of the present application, the second signal only needs to be a signal that satisfies the specification of the first wireless communication technology, and the fourth signal includes data information or control command information in the embodiment of the present application is not limited.

Optionally, the second indication information is used to indicate at least one of the following:

a subcarrier spacing of the third signal; a modulation mode of the third signal; a coding rate of the third signal; bit positions of the data information in the third signal.

Of course, the above is only an example, and the second indication information may also indicate other contents, which are not illustrated in sequence here.

The subcarrier spacing for the third signal may be 15kHz, may be 30kHz, and the like, which is determined according to actual situations. In this embodiment, the second indication information may directly indicate the subcarrier spacing of the third signal, for example, the subcarrier spacing of the third signal is 15kHz, and the value indicated by the second indication information is 15; the subcarrier spacing of the third signal is 30kHz and the second indication information indicates a value of 30.

In this embodiment, the second indication information may indirectly indicate the subcarrier spacing of the third signal. For example, in this embodiment of the present application, the first network device and the first terminal device may agree in advance at least one subcarrier spacing, then the second indication information may be used to indicate one of the at least one subcarrier spacing, and the first terminal device may determine the subcarrier spacing of the third signal accordingly. It should be noted that, in this embodiment, the number of at least one subcarrier interval is not limited, and may be 1, or greater than 1, and is not illustrated in sequence here.

For example, in this embodiment of the application, one index value may be configured for each subcarrier interval, and the second indication information may indicate the index value of the subcarrier interval. For example, the first network device and the first terminal device may pre-agree on 3 subcarrier intervals: 15kHz, 30kHz, and 60kHz, and the corresponding index values are 01, 10, and 11, which can be specifically referred to table 3.

TABLE 3

Index value	Subcarrier spacing
		01	15kHz
10	30kHz
		11	60kHz

When the index value of the subcarrier interval indicated by the second indication information sent by the network equipment is 01, the indicated subcarrier interval is 15kHz; when the index value of the subcarrier interval indicated by the second indication information sent by the network equipment is 10, the indicated subcarrier interval is 30kHz; when the index value of the subcarrier spacing indicated by the second indication information sent by the network equipment is 11, the indicated subcarrier spacing is 60kHz. Of course, the above is only an example, and other cases are not described again.

It should be noted that, in the current standard, the subcarrier spacing is not an arbitrary value, but needs to satisfy the formula: 15 × 2m khz, m being an integer greater than 0. Therefore, for example, in this embodiment, the second indication information may further indicate a value of M corresponding to the subcarrier spacing. For example, when the value indicated by the second indication information sent by the network device is 0, the indicated subcarrier spacing is 15kHz; when the value indicated by the second indication information sent by the network equipment is 1, the indicated subcarrier interval is 30kHz; when the value indicated by the second indication information sent by the network equipment is 2, the indicated subcarrier spacing is 60kHz. Of course, the above is only an example, and other cases are not described again.

The modulation scheme of the third signal may be QPSK, 16QAM, 64QAM, 256QAM, or the like, and the first network device and the first terminal device may agree in advance on at least one modulation scheme, so that the second indication information may be used to indicate one of the at least one modulation scheme, and the first terminal device may determine the modulation scheme of the third signal.

It should be noted that, in this embodiment, the number of at least one modulation mode is not limited, and may be 1, or any positive integer greater than 1, and is not illustrated here one by one.

For example, in this embodiment of the application, one index value may be configured for each modulation scheme, and the second indication information may indicate an index value of a modulation scheme of the interference signal. For example, the first network device and the first terminal device may agree in advance on 4 modulation schemes: QPSK, 16QAM, 64QAM, and 256QAM, and the corresponding index values are 00, 01, 10, and 11, respectively, which can be specifically referred to table 4.

TABLE 4

Index value	Modulation system
		00	QPSK
01	16QAM
		10	64QAM
11	256QAM

When the index value of the modulation scheme indicated by the second indication information sent by the network device is 00, the modulation scheme of the interference signal may be indicated as QPSK; when the index value of the modulation scheme indicated by the second indication information sent by the network device is 01, the modulation scheme of the interference signal may be indicated as 16QAM; when the index value of the modulation scheme indicated by the second indication information sent by the network device is 10, the modulation scheme of the interference signal may be indicated as 64QAM; when the index value of the modulation scheme indicated by the second indication information sent by the network device is 11, the modulation scheme of the interference signal may be indicated as 256QAM. Of course, the above is only an example, and other cases are not described again.

The coding rate of the third signal is 1/4, 1/3, 2/5, 3/5, 1/2, 2/3, 3/4, 4/5, 5/6, etc., the first network device and the first terminal device may agree with at least one coding rate in advance, and then the second indication information may be used to indicate one of the at least one coding rate, and the first terminal device may determine the coding rate of the third signal accordingly.

It should be noted that, in this embodiment, the number of at least one coding rate is not limited, and may be 1, or may be any positive integer greater than 1, and is not illustrated here one by one.

In the embodiment of the present application, the second indication information may directly indicate the coding rate of the third signal, for example, the coding rate of the third signal is 1/2, and the value indicated by the second indication information is 1/2. In an embodiment of the present application, the second indication information may indirectly indicate a coding rate of the third signal. For example, in this embodiment of the present application, one index value may be configured for each coding rate, and the second indication information may indicate the index value of the coding rate. For example, the first network device and the first terminal device may pre-agree on 6 coding rates: 1/4, 1/3, 2/5, 3/5, 1/2 and 2/3, and the corresponding index values are 000, 001, 010, 011, 100 and 101, respectively, and specifically, refer to table 5.

TABLE 5

Index value	Encoding rate
		000	1/4
001	1/3
		010	2/5
011	3/5
		100	1/2
101	2/3

When the index value of the coding rate indicated by the second indication information transmitted by the network device is 000, the coding rate of the third signal can be indicated to be 1/4; when the index value of the coding rate indicated by the second indication information sent by the network device is 001, the coding rate of the third signal may be indicated as 1/3, and other situations are not described again.

The first network device and the first terminal device may agree in advance on at least one position for a bit position of the data information in the third signal, and then the second indication information may be used to indicate one of the at least one position, and the first terminal device may thereby determine the bit position of the data information in the third signal. For example, n bits are included in the third signal, the second indication information may indicate which bits of the n bits the data information is. For example, the bit position indicated by the second indication information may be a starting position of the data information in the third signal. For example, the third signal includes n bits, the second indication information may indicate a positive integer m, m represents an mth bit of the n bits included in the third signal, and is a start position of the data information in the third signal, the data information is P bits from the mth bit of the n bits, and P is a preset value, or may be a value indicated by the second indication information. Illustratively, the bit positions indicated by the second indication information may be the start position and the end position of the data information in the third signal. For example, the second indication information may indicate two positive integers m1 and m2, where m1 represents the m1 th bit of n bits included in the third signal, is the start position of the data information in the third signal, m2 represents the m2 nd bit of n bits included in the third signal, and is the end position of the data information in the third signal, and then the data information is all m2-m1+1 bits from the m1 st bit to the m2 nd bit of the n bits. For example, the bit position indicated by the second indication information may be an end position of the data information in the third signal. For example, the second indication information may indicate a positive integer m, where m represents an mth bit of n bits included in the third signal, and is an end position of the data information in the third signal, and the data information is P bits from the mth bit before the mth bit in the n bits, where P is a preset value, or may be a value indicated by the second indication information. Of course, the above is only an example, and the second indication information may also be indicated by other ways, which are not illustrated herein one by one.

As shown in fig. 5, a schematic diagram of a network device is provided for the embodiment of the present application. The network device may be configured to perform the actions of the network device in the above method embodiments, where the network device 500 includes: a transceiving unit 501 and a processing unit 502.

When the network device 500 executes the operations of the network device in the flow shown in fig. 2, the transceiver 501 and the processing unit 502 respectively execute the following steps:

a processing unit 502 for determining a first signal;

a transceiver 501, configured to send a first signal to a first terminal device on a first carrier, where the first carrier is a carrier shared by the first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; sending first indication information to the first terminal equipment, wherein the first indication information is used for indicating at least one of the following items: whether an interfering signal is present in the first signal; a power ratio of the interfering signal to the first signal; and a modulation mode of the interference signal.

In an optional implementation manner, the transceiver unit 501 is further configured to:

and sending a second signal to the first terminal device on a second carrier, wherein the second carrier and the first carrier are two carriers of carrier aggregation, the second carrier is a main carrier, and the first carrier is an auxiliary carrier.

or, the first indication information is located in Radio Resource Control (RRC) signaling;

or, the first indication information is located in media access control, MAC, signaling.

When the network device 500 executes the operations of the network device in the flow shown in fig. 4, the transceiver 501 and the processing unit 502 respectively execute the following steps:

a processing unit 502, configured to determine data information, where a first network device is a network device in a first wireless communication technology;

a transceiver 501, configured to send the data information to a second network device, where the second network device is a network device in a second wireless communication technology; sending second indication information to the first terminal equipment; the second indication information is used for indicating signal characteristics of a third signal; the third signal is a signal which is sent by the second network device to the first terminal device on the first carrier and is used for bearing the data information.

In an optional embodiment, the second indication information is used to indicate at least one of:

As shown in fig. 6, a schematic structural diagram of a terminal device is provided for the embodiment of the present application. The terminal device may be configured to perform the actions of the terminal device in the foregoing method embodiments, where the terminal device 600 includes: a transceiver 601 and a processing unit 602.

When the terminal device 600 executes the operation of the terminal device in the flow shown in fig. 2, the transceiver 601 and the processor 602 execute the following steps:

a transceiving unit 601, configured to receive a first signal from a first network device on a first carrier; the first carrier is a carrier shared by the first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; receiving first indication information from the first network device; the first indication information is used for indicating at least one of the following: whether an interference signal is present in the first signal; a power ratio of the interfering signal to the first signal; a modulation mode of the interference signal;

a processing unit 602, configured to demodulate information carried in the first signal according to the first indication information.

In an optional implementation manner, the transceiver 601 is further configured to:

receiving a second signal from the first network device on a second carrier, where the second carrier and the first carrier are two carriers of carrier aggregation, the second carrier is a primary carrier, and the first carrier is a secondary carrier.

In an optional embodiment, the second indication information is located in downlink control information DCI;

or, the second indication information is located in radio resource control, RRC, signaling;

or, the second indication information is located in media access control, MAC, signaling.

When the terminal device 600 executes the operation of the terminal device in the flow shown in fig. 4, the transceiver 601 and the processor 602 execute the following steps:

a transceiver 601, configured to receive second indication information from the first network device; the second indication information is used for indicating signal characteristics of a third signal; the first network equipment is network equipment in a first wireless communication technology; receiving the third signal from a second network device on a first carrier; the first carrier is a carrier shared by the first network device and the second network device; the second network device is a network device in a second wireless communication technology;

a processing unit 602, configured to demodulate data information in the third signal according to the second indication information.

or, the second indication information is located in Radio Resource Control (RRC) signaling;

Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device may be configured to perform the actions of the network device in the above method embodiments. The network device shown in fig. 7 may be an implementation of one of the hardware circuits of the network device shown in fig. 5. For ease of illustration, fig. 7 shows only the main components of the communication device. Optionally, the communication apparatus may be a network device, or an apparatus in a network device, such as a chip or a chip system, where the chip system includes at least one chip, and the chip system may further include other circuit structures and/or discrete devices. Optionally, taking the communication apparatus as a network device as an example, as shown in fig. 7, the network device 700 includes a processor 701, a memory 702, a communication module 703, an antenna 704, and the like.

When the network device 700 executes the actions of the network device in the flow shown in fig. 2, the following steps may be respectively executed:

a processor 701 for determining a first signal;

a communication module 703, configured to send a first signal to a first terminal device on a first carrier, where the first carrier is a carrier shared by the first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; sending first indication information to the first terminal equipment, wherein the first indication information is used for indicating at least one of the following items: whether an interfering signal is present in the first signal; a power ratio of the interfering signal to the first signal; a modulation mode of the interference signal.

In an optional implementation manner, the communication module 703 is further configured to:

When the network device 700 executes the actions of the network device in the flow shown in fig. 4, the following steps may be respectively executed:

a processor 701, configured to determine data information, where the first network device is a network device in a first wireless communication technology;

a communication module 703, configured to send the data information to a second network device, where the second network device is a network device in a second wireless communication technology; sending second indication information to the first terminal equipment; the second indication information is used for indicating signal characteristics of a third signal; the third signal is a signal that is sent by the second network device to the first terminal device on the first carrier and is used for carrying the data information.

As shown in fig. 8, a schematic structural diagram of a terminal device is provided for the embodiment of the present application. The wireless terminal device shown in fig. 8 may be an implementation of one of the hardware circuits of the terminal device shown in fig. 6. For convenience of explanation, fig. 8 shows only main components of the terminal device. As shown in fig. 8, terminal device 800 includes a processor 801 coupled to a memory 802, a transceiver 803, an antenna 804, and a display 805. The processor 801 is mainly used for processing communication protocols and communication data, controlling the whole wireless terminal device, executing software programs, and processing data of the software programs, for example, for supporting the terminal device to perform the actions described in the above method embodiments. The memory 802 is used primarily for storing software programs and data. The transceiver 803 is mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals. The antenna 804 is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves in cooperation with the transceiver 803. The display 805 is mainly used for receiving instructions input by a user and displaying images, data, and the like for the user. The terminal device 800 may also include other components, such as speakers, etc., which will not be described in detail herein.

When the terminal device 800 executes the actions of the terminal device in the flow shown in fig. 2, the following steps may be executed:

a transceiver 803 for receiving a first signal from a first network device on a first carrier; the first carrier is a carrier shared by the first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; receiving first indication information from the first network device; the first indication information is used for indicating at least one of the following items: whether an interfering signal is present in the first signal; a power ratio of the interfering signal to the first signal; a modulation mode of the interference signal;

a processor 801, configured to demodulate information carried in the first signal according to the first indication information.

In an optional embodiment, the transceiver 803 is further configured to: receiving a second signal from the first network device on a second carrier, where the second carrier and the first carrier are two carriers of carrier aggregation, the second carrier is a primary carrier, and the first carrier is a secondary carrier.

In an optional embodiment, the second indication information is located in downlink control information DCI; or, the second indication information is located in radio resource control, RRC, signaling; or, the second indication information is located in media access control, MAC, signaling.

When the terminal device 800 executes the operation of the terminal device in the flow shown in fig. 4, the following steps may be executed:

a transceiver 803 for receiving second indication information from the first network device; the second indication information is used for indicating signal characteristics of a third signal; the first network equipment is network equipment in a first wireless communication technology; receiving the third signal from a second network device on a first carrier; the first carrier is a carrier shared by the first network device and the second network device; the second network device is a network device in a second wireless communication technology;

a processor 801, configured to demodulate the data information in the third signal according to the second indication information.

In an optional embodiment, the second indication information is used to indicate at least one of: a subcarrier spacing of the third signal; a modulation mode of the third signal; a coding rate of the third signal; bit positions of the data information in the third signal.

In an optional embodiment, the second indication information is located in downlink control information DCI; or, the second indication information is located in Radio Resource Control (RRC) signaling; or, the second indication information is located in media access control, MAC, signaling.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of communication, comprising:

a first network device sends a first signal to a first terminal device on a first carrier, wherein the first carrier is a carrier shared by a first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; the first wireless communication technology is a cellular mobile communication technology, and the second wireless communication technology is a broadcast communication technology;

the first network equipment sends first indication information to the first terminal equipment, wherein the first indication information is used for indicating at least one of the following items:

whether an interference signal is present in the first signal; a power ratio of the interfering signal to the first signal; and a modulation mode of the interference signal.

2. The method of claim 1, further comprising:

3. The method according to claim 1 or 2,

the interference signal is a signal sent by a second network device through the first carrier, and the second network device is a network device of the second wireless communication technology.

4. The method according to claim 1 or 2, wherein the first indication information is located in downlink control information, DCI;

5. A method of communication, comprising:

a first terminal device receiving a first signal from a first network device on a first carrier; the first carrier is a carrier shared by a first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; the first wireless communication technology is a cellular mobile communication technology, and the second wireless communication technology is a broadcast communication technology;

the first terminal equipment receives first indication information from the first network equipment; the first indication information is used for indicating at least one of the following: whether an interference signal is present in the first signal; a power ratio of the interfering signal to the first signal; a modulation mode of the interference signal;

and the first terminal equipment demodulates the information carried in the first signal according to the first indication information.

6. The method of claim 5, further comprising:

the first terminal device receives a second signal from the first network device on a second carrier, where the second carrier and the first carrier are two carriers of carrier aggregation, the second carrier is a primary carrier, and the first carrier is a secondary carrier.

7. The method of claim 5, wherein the interfering signal is a signal transmitted by a second network device via the first carrier.

8. The method according to any of claims 6 to 7, wherein the first indication information is located in downlink control information, DCI;

9. A method of communication, comprising:

determining data information by first network equipment, wherein the first network equipment is network equipment in a first wireless communication technology;

the first network equipment sends the data information to second network equipment, and the second network equipment is network equipment in a second wireless communication technology;

the first network equipment sends second indication information to first terminal equipment; the second indication information is used for indicating signal characteristics of a third signal; the third signal is a signal which is sent by the second network device to the first terminal device on a first carrier and is used for carrying the data information; the first wireless communication technology is a cellular mobile communication technology, and the second wireless communication technology is a broadcast communication technology.

10. The method of claim 9, wherein the second indication information is used for indicating at least one of the following:

11. A method of communication, comprising:

the first terminal equipment receives second indication information from the first network equipment; the second indication information is used for indicating signal characteristics of a third signal; the first network equipment is network equipment in a first wireless communication technology;

the first terminal device receiving the third signal from a second network device on a first carrier; the first carrier is a carrier shared by the first network device and the second network device; the second network device is a network device in a second wireless communication technology; the first wireless communication technology is a cellular mobile communication technology, and the second wireless communication technology is a broadcast communication technology;

and the first terminal equipment demodulates the data information in the third signal according to the second indication information.

12. The method of claim 11, wherein the second indication information is used to indicate at least one of:

13. The method according to any of claims 11 to 12, wherein the second indication information is located in downlink control information, DCI;

14. A communications apparatus, comprising:

a processing unit for determining a first signal;

a transceiving unit, configured to send a first signal to a first terminal device on a first carrier, where the first carrier is a carrier shared by a first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; the first wireless communication technology is a cellular mobile communication technology, and the second wireless communication technology is a broadcast communication technology; sending first indication information to the first terminal equipment, wherein the first indication information is used for indicating at least one of the following items: whether an interference signal is present in the first signal; a power ratio of the interfering signal to the first signal; a modulation mode of the interference signal.

15. The apparatus of claim 14, wherein the transceiver unit is further configured to:

16. The apparatus of claim 14 or 15, wherein the interfering signal is a signal transmitted by a second network device over the first carrier, and wherein the second network device is a network device of the second wireless communication technology.

17. A communications apparatus, comprising:

a transceiving unit for receiving a first signal from a first network device on a first carrier; the first carrier is a carrier shared by a first wireless communication technology and a second wireless communication technology; the first network device is a network device in the first wireless communication technology; receiving first indication information from the first network device; the first indication information is used for indicating at least one of the following items: whether an interference signal is present in the first signal; a power ratio of the interfering signal to the first signal; a modulation mode of the interference signal; the first wireless communication technology is a cellular mobile communication technology, and the second wireless communication technology is a broadcast communication technology;

and the processing unit is used for demodulating the information carried in the first signal according to the first indication information.

18. The apparatus of claim 17, wherein the transceiver unit is further configured to:

19. The apparatus of claim 17, wherein the interfering signal is a signal transmitted by a second network device over the first carrier.

20. A communications apparatus, comprising:

the processing unit is used for determining data information, and the first network equipment is network equipment in a first wireless communication technology;

the receiving and sending unit is used for sending the data information to second network equipment, and the second network equipment is network equipment in a second wireless communication technology; the first wireless communication technology is a cellular mobile communication technology, and the second wireless communication technology is a broadcast communication technology; sending second indication information to the first terminal equipment; the second indication information is used for indicating signal characteristics of a third signal; the third signal is a signal that is sent by the second network device to the first terminal device on the first carrier and is used for carrying the data information.

21. The apparatus of claim 20, wherein the second indication information is used for indicating at least one of:

22. A communications apparatus, comprising:

a transceiving unit for receiving second indication information from the first network device; the second indication information is used for indicating signal characteristics of a third signal; the first network equipment is network equipment in a first wireless communication technology; receiving the third signal from a second network device on a first carrier; the first carrier is a carrier shared by the first network device and the second network device; the second network device is a network device in a second wireless communication technology; the first wireless communication technology is a cellular mobile communication technology, and the second wireless communication technology is a broadcast communication technology;

and the processing unit is used for demodulating the data information in the third signal according to the second indication information.

23. The apparatus of claim 22, wherein the second indication information is used to indicate at least one of:

24. A communications apparatus, comprising: a memory for storing instructions and a processor for executing the instructions stored by the memory, and execution of the instructions stored in the memory causes the processor to perform the method of any of claims 1 to 13.

25. A computer readable storage medium comprising computer readable instructions which, when read and executed by a communication apparatus, cause the communication apparatus to perform the method of any one of claims 1 to 13.