Communication method and apparatus

Abstract

Provided in the present application are a communication method and apparatus. The method comprises: a first device generating a first signal, wherein the first signal comprises information of a first frequency band; the first device transmitting the first signal to a second device by means of a second frequency band; correspondingly, the second device receiving the first signal by means of the second frequency band; and then the second device performing frequency shifting on the first signal from the second frequency band to the first frequency band, and transmitting the first signal to a terminal device by means of the first frequency band, wherein the first frequency band is different from the second frequency band. In the technical solution of the present application, a second device uses different frequency bands to receive a first signal and transmit the first signal, such that the first device performs reception and transmission at different frequencies, thereby eliminating generated self-excited interference. On the basis of the technical solution, the problem of the self-excited interference of the first device can be fundamentally solved; moreover, no frequency shift module is required at a first device side, such that the device cost can be further reduced, and the flexible deployment of antennas can be realized.

Description

Communication methods and devices

[0001] This application claims priority to Chinese Patent Application No. 202411548372.8, filed with the Chinese Patent Office on October 31, 2024, entitled "Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more particularly to a communication method and apparatus. Background Technology

[0003] Repeaters have become increasingly widely used as a technology to enhance wireless network coverage, but their development has been hampered by drawbacks such as difficult engineering deployment and poor network performance. Insufficient isolation between the repeater's transmitting and receiving antennas can easily lead to self-oscillation, degrading network coverage and performance. Self-oscillation in a repeater can cause it to malfunction or even burn out. Furthermore, in practical applications, the insufficient isolation of traditional repeaters places higher demands on antenna deployment.

[0004] Based on this, this application aims to provide a communication method that can fundamentally solve the problem of self-excitation interference of repeaters. Summary of the Invention

[0005] This application provides a communication method that can fundamentally solve the problem of self-excitation interference in repeaters.

[0006] In a first aspect, a communication method is provided, the method comprising: a first device generating a first signal, the first signal including information of a first frequency band; the first device transmitting the first signal to a second device via a second frequency band; the second device receiving the first signal via the second frequency band; and the second device transmitting the first signal to a terminal device via the first frequency band; wherein the first frequency band is different from the second frequency band.

[0007] For example, the first device can be a host station, and the second device can be a radio frequency forwarding and amplification device. The radio frequency forwarding and amplification device can be understood as a base station that is transmitted remotely by the host station, used to amplify and forward the received radio frequency signal. That is to say, it can be considered as a wireless signal relay device.

[0008] It should be understood that in this application, the radio frequency transceiver amplification device may also be referred to as a radio frequency device, or a radio frequency amplification device, or a radio frequency transceiver device, and this application does not limit it in this way. For example, in one possible implementation, the first device may be a repeater, wherein the repeater may also be referred to as a leaf station.

[0009] In the technical solution of this application, the second device receives the first signal from the first device through the second frequency band and transmits the first signal to the terminal device through the first frequency band. The first frequency band and the second frequency band are different, thereby realizing inter-frequency transmission and reception of the second device and eliminating the self-oscillation interference generated by the second device. Based on the above technical solution, the self-oscillation interference problem of radio frequency repeater amplification equipment can be fundamentally solved. Furthermore, the host station does not require a frequency shifting module, which can further reduce equipment costs and enable flexible antenna deployment.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the first frequency band and the second frequency band belong to different frequency bands.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the first frequency band and the second frequency band belong to the same frequency band, or the first frequency band and the second frequency band belong to different sub-frequency bands of the same frequency band, wherein the signal interference value on the first frequency band is less than a threshold. Based on the above technical solution, by reducing the signal interference value of the second frequency band, the self-oscillation interference problem of the second device can be avoided, and this technical solution is also applicable to scenarios with limited spectrum resources.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, before the second device transmits the first signal to the terminal device via the first frequency band, the method further includes: the second device detecting that the signal interference value on the first frequency band is less than the threshold; or, the second device detecting that the signal interference value on the first frequency band is greater than the threshold, and reducing the signal interference value on the first frequency band. Based on the above technical solution, the second device can eliminate and detect the signal interference value on the first frequency band, thereby avoiding the self-oscillation interference problem of the second device.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: receiving a second signal through the second frequency band; filtering the second signal; wherein, when the first signal and the second signal are first type signals, the time-frequency domain resources for receiving the first signal and the time-frequency domain resources for receiving the second signal are the same; or, when the first signal and the second signal are second type signals, the time-domain resources for receiving the first signal and the time-domain resources for receiving the second signal are different. Based on the above technical solution, complete resource sharing can be achieved through unified network scheduling, minimizing the impact on the first device.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: receiving a second signal through the second frequency band; filtering the second signal; wherein the first signal is carried on a first sub-frequency band of the second frequency band, the second signal is carried on a second sub-frequency band of the second frequency band, and the first sub-frequency band and the second sub-frequency band do not overlap. Based on the above technical solution, complete resource sharing can be achieved through unified network scheduling, minimizing the impact on the first device.

[0015] Secondly, a communication method is provided, which is executed by a first device. Unless otherwise specified, the "first device" in this application may refer to the first device itself, a component in the first device (e.g., a processor, a chip, or a chip system), or a logic module or software that can implement all or part of the functions of the first device.

[0016] The method includes: generating a first signal, the first signal including information of a first frequency band; and transmitting the first signal to a second device via a second frequency band, the first frequency band and the second frequency band belonging to different frequency bands.

[0017] In conjunction with the second aspect, in some implementations of the second aspect, the first frequency band and the second frequency band belong to different frequency bands.

[0018] In conjunction with the second aspect, in some implementations of the second aspect, the first frequency band and the second frequency band belong to different sub-bands of the same frequency band, wherein the signal interference value on the first frequency band is less than a threshold.

[0019] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: transmitting a second signal to the second device via the second frequency band; wherein, when the first signal and the second signal are first type signals, the time-frequency domain resources for transmitting the first signal and the time-frequency domain resources for transmitting the second signal are the same; or, when the first signal and the second signal are second type signals, the time-domain resources for transmitting the first signal and the time-domain resources for transmitting the second signal are different.

[0020] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: transmitting a second signal to the second device via the second frequency band, wherein the first signal is carried on a first sub-frequency band of the second frequency band, the second signal is carried on a second sub-frequency band of the second frequency band, and the first sub-frequency band and the second sub-frequency band do not overlap.

[0021] Thirdly, a communication method is provided, which is executed by a second device. Unless otherwise specified, the "first device" in this application may refer to the first device itself, a component in the first device (e.g., a processor, a chip, or a chip system), or a logic module or software that can implement all or part of the functions of the first device.

[0022] The method includes: receiving a first signal from a first device via a second frequency band, the first signal including information of a first frequency band, the second frequency band being different from the first frequency band; and transmitting the first signal to a terminal device via the first frequency band; wherein the first frequency band is different from the second frequency band.

[0023] In conjunction with the third aspect, in some implementations of the third aspect, the first frequency band and the second frequency band belong to different frequency bands.

[0024] In conjunction with the third aspect, in some implementations of the third aspect, the first frequency band and the second frequency band belong to different sub-bands of the same frequency band, wherein the signal interference value on the first frequency band is less than a threshold.

[0025] In conjunction with the third aspect, in some implementations of the third aspect, before the second device sends the first signal to the terminal device via the first frequency band, the method further includes: detecting that the signal interference value on the first frequency band is less than the threshold; or, detecting that the signal interference value on the first frequency band is greater than the threshold and reducing the signal interference value on the first frequency band.

[0026] In conjunction with the third aspect, in some implementations of the third aspect, the method further includes: receiving a second signal through the second frequency band; filtering the second signal; wherein, when the first signal and the second signal are first type signals, the time-frequency domain resources for receiving the first signal and the time-frequency domain resources for receiving the second signal are the same; or, when the first signal and the second signal are second type signals, the time-domain resources for receiving the first signal and the time-domain resources for receiving the second signal are different.

[0027] In conjunction with the third aspect, in some implementations of the third aspect, the method further includes: receiving a second signal through the second frequency band; filtering out the second signal; wherein the first signal is carried in a first sub-frequency band of the second frequency band, the second signal is carried in a second sub-frequency band of the second frequency band, and the first sub-frequency band and the second sub-frequency band do not overlap.

[0028] Fourthly, a communication system is provided, comprising: a first device and a second device, wherein the first device generates a first signal, the first signal including information of a first frequency band; the first device transmits the first signal to the second device via a second frequency band; the second device receives the first signal via the second frequency band; and the second device transmits the first signal to a terminal device via the first frequency band; wherein the first frequency band is different from the second frequency band.

[0029] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first frequency band and the second frequency band belong to different frequency bands.

[0030] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first frequency band and the second frequency band belong to different sub-bands of the same frequency band, wherein the signal interference value on the first frequency band is less than a threshold.

[0031] In conjunction with the fourth aspect, in some implementations of the fourth aspect, before the second device sends the first signal to the terminal device via the first frequency band, the method further includes: the second device detecting that the signal interference value on the first frequency band is less than the threshold; or, the second device detecting that the signal interference value on the first frequency band is greater than the threshold and reducing the signal interference value on the first frequency band.

[0032] In conjunction with the fourth aspect, some implementations of the fourth aspect further include: the second device receiving the second signal via the second frequency band; the second device filtering out the second signal; wherein, when the first signal and the second signal are first type signals, the time-frequency domain resources for the second device to receive the first signal and the time-frequency domain resources for the second signal are the same; or, when the first signal and the second signal are second type signals, the time-domain resources for the second device to receive the first signal and the time-domain resources for the second signal are different.

[0033] In conjunction with the fourth aspect, some implementations of the fourth aspect further include: the second device receiving the second signal through the second frequency band; the second device filtering out the second signal; wherein the first signal is carried on a first sub-frequency band of the second frequency band, the second signal is carried on a second sub-frequency band of the second frequency band, and the first sub-frequency band and the second sub-frequency band do not overlap.

[0034] Fifthly, a communication device is provided, comprising: a processing unit for generating a first signal, the first signal including information of a first frequency band; and a transceiver unit for transmitting the first signal to a second device via a second frequency band, the first frequency band and the second frequency band belonging to different frequency bands.

[0035] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the first frequency band and the second frequency band belong to different frequency bands.

[0036] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the first frequency band and the second frequency band belong to different sub-bands of the same frequency band, wherein the signal interference value on the first frequency band is less than a threshold.

[0037] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the transceiver unit is configured to: transmit a second signal to the second device via the second frequency band; wherein, when the first signal and the second signal are first type signals, the time-frequency domain resources for transmitting the first signal and the time-frequency domain resources for transmitting the second signal are the same; or, when the first signal and the second signal are second type signals, the time-domain resources for transmitting the first signal and the time-domain resources for transmitting the second signal are different.

[0038] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the transceiver unit is further configured to: transmit a second signal to the second device via the second frequency band, wherein the first signal is carried on a first sub-frequency band of the second frequency band, the second signal is carried on a second sub-frequency band of the second frequency band, and the first sub-frequency band and the second sub-frequency band do not overlap.

[0039] A sixth aspect provides a communication device, comprising: a transceiver unit configured to receive a first signal from a first device via a second frequency band, the first signal including information of a first frequency band, the second frequency band being different from the first frequency band; the transceiver unit is further configured to transmit the first signal to a terminal device via the first frequency band; wherein the first frequency band is different from the second frequency band.

[0040] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the first frequency band and the second frequency band belong to different frequency bands.

[0041] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the first frequency band and the second frequency band belong to different sub-bands of the same frequency band, wherein the signal interference value on the first frequency band is less than a threshold.

[0042] In conjunction with the sixth aspect, in some implementations of the sixth aspect, before the second device sends the first signal to the terminal device via the first frequency band, it further includes: a processing unit, configured to detect that the signal interference value on the first frequency band is less than the threshold; or, configured to detect that the signal interference value on the first frequency band is greater than the threshold and reduce the signal interference value on the first frequency band.

[0043] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the transceiver unit is further configured to: receive a second signal via the second frequency band; the processing unit is further configured to filter out the second signal; wherein, when the first signal and the second signal are first type signals, the time-frequency domain resources for receiving the first signal and the time-frequency domain resources for receiving the second signal are the same; or, when the first signal and the second signal are second type signals, the time-domain resources for receiving the first signal and the time-domain resources for receiving the second signal are different.

[0044] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the transceiver unit is further configured to receive a second signal via the second frequency band; the processing unit is further configured to filter out the second signal; wherein the first signal is carried on a first sub-frequency band of the second frequency band, the second signal is carried on a second sub-frequency band of the second frequency band, and the first sub-frequency band and the second sub-frequency band do not overlap.

[0045] A seventh aspect provides a communication apparatus for performing the method provided in the second aspect. Specifically, the apparatus may include units and / or modules for performing the method in the second aspect or any possible implementation thereof, such as a processing unit and / or a communication unit.

[0046] In one implementation, the device is a host station. When the device is a host station, the communication unit can be a transceiver or an input / output interface; the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0047] In another implementation, the device is a chip, chip system, or circuit used in a host station. When the device is a chip, chip system, or circuit used in a host station, the communication unit can be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; the processing unit can be at least one processor, processing circuit, or logic circuit.

[0048] Eighthly, a communication apparatus is provided for performing the method provided in the third aspect. Specifically, the apparatus may include units and / or modules for performing the method in the third aspect or any possible implementation thereof, such as processing units and / or communication units.

[0049] In one implementation, the device is a radio frequency (RF) transceiver amplification device. When the device is an RF transceiver amplification device, the communication unit can be a transceiver, or an input / output interface; the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0050] In another implementation, the device is a chip, chip system, or circuit used in an RF transceiver. When the device is a chip, chip system, or circuit used in an RF transceiver, the communication unit can be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; the processing unit can be at least one processor, processing circuit, or logic circuit.

[0051] A ninth aspect provides a communication device comprising: at least one processor coupled to at least one memory for storing computer programs or instructions, and at least one processor for calling and executing the computer programs or instructions from the at least one memory, such that the communication device performs the methods of the second aspect or any possible implementation thereof.

[0052] In one implementation, the device is a host station.

[0053] In another implementation, the device is a chip, chip system, or circuit used in a host device.

[0054] A tenth aspect provides a communication device comprising: at least one processor coupled to at least one memory for storing computer programs or instructions, and at least one processor for calling and executing the computer programs or instructions from the at least one memory, such that the communication device performs the methods of the third aspect or any possible implementation thereof.

[0055] In one implementation, the device is a radio frequency repeater amplification device.

[0056] In another implementation, the device is a chip, chip system, or circuit used in a radio frequency transceiver amplification device.

[0057] Eleventhly, a processor is provided for executing the methods provided in the foregoing aspects.

[0058] Unless otherwise specified, or if it does not contradict its actual function or internal logic in the relevant description, the transmission and acquisition / reception operations involved in the processor can be understood as processor output and reception, input and other operations, or as transmission and reception operations performed by radio frequency circuits and antennas. This application does not limit them in this regard.

[0059] In a twelfth aspect, a chip is provided, including a processor coupled to a memory for storing a computer program, the processor for executing the computer program stored in the memory to implement the method as described in the first aspect and any implementation thereof, or the processor for executing the computer program stored in the memory to implement the method as described in the second aspect and any implementation thereof, or the processor for executing the computer program stored in the memory to implement the method as described in the third aspect and any implementation thereof.

[0060] In a thirteenth aspect, a computer-readable storage medium is provided having a computer program or instructions stored thereon, which, when executed by a processor, cause the method described in the first aspect and any implementation thereof to be executed, or the method described in the second aspect and any implementation thereof to be executed, or the method described in the third aspect and any implementation thereof to be executed.

[0061] In a fourteenth aspect, a computer program product comprising instructions is provided, which, when run on a computer, causes the method described in the first aspect and any implementation thereof to be executed, or the method described in the second aspect and any implementation thereof to be executed, or the method described in the third aspect and any implementation thereof to be executed.

[0062] In a fifteenth aspect, a communication system is provided, including a first device and a second device, the first device being configured to perform the methods of the second aspect and any possible implementation thereof, and the second device being configured to perform the methods of the third aspect and any possible implementation thereof.

[0063] In one implementation, the first device is a host station, and the second device is a radio frequency repeater amplification device.

[0064] It should be understood that the radio frequency (RF) repeater / amplifier device can also be called an RF device, an RF amplifier, or an RF repeater device, and this application does not limit this. For example, in one possible implementation, the RF repeater / amplifier device can be a repeater.

[0065] For the relevant descriptions and beneficial effects of aspects two through fifteen, please refer to the relevant descriptions and beneficial effects of aspect one, which will not be repeated here. Attached Figure Description

[0066] Figure 1 shows the system architecture 100 to which this application applies.

[0067] Figure 2 is a schematic flowchart of a communication method 200 provided in an embodiment of this application.

[0068] Figure 3 is a schematic diagram of an example communication method provided in an embodiment of this application.

[0069] Figure 4 is a schematic diagram of a communication method under another example provided in the embodiments of this application.

[0070] Figure 5 is a logic diagram of an analog + digital cancellation circuit provided in an embodiment of this application.

[0071] Figure 6 is a schematic diagram of another example of a communication method provided in an embodiment of this application.

[0072] Figure 7 is a schematic diagram of another example of a communication method provided in an embodiment of this application.

[0073] Figure 8 is a schematic diagram of a communication method under another example provided in the embodiments of this application.

[0074] Figure 9 is a schematic block diagram of a communication device 900 provided in an embodiment of this application.

[0075] Figure 10 illustrates another communication device 1000 provided in an embodiment of this application.

[0076] Figure 11 illustrates a chip system 1100 provided in an embodiment of this application. Detailed Implementation

[0077] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0078] Figure 1 illustrates the system architecture 100 to which this application applies. As shown in Figure 1, the communication system includes a network device 110 and a relay device 120. The network device 110 and the relay device 120 communicate via a wireless link. Optionally, the communication system may further include at least one terminal, such as terminal 130 and terminal 140 in the figure. Terminal 130 is wirelessly connected to the network device 110, and terminal 140 is wirelessly connected to the relay device 120.

[0079] In this context, a terminal is a device with wireless transceiver capabilities, capable of sending signals to or receiving signals from a base station. Terminals can also be referred to as terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, and smart cities. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technologies or device forms used in the terminals.

[0080] In one possible scenario, network device 110 can be a host station, which refers to a base station that provides a transmission channel to other base stations at a distance. Here, the transmission channel is used broadly and can include radio frequency signals, common public radio interface (CPRI) signals between the building baseband unit (BBU) and radio remote unit (RRU), S1 signals between the BBU and the core network, etc. It should be understood that a host station can also be called a host base station, etc., and this application does not limit this terminology.

[0081] It should be noted that this application uses radio frequency signal forwarding and amplification technology; therefore, the network equipment mainly transmits radio frequency signals.

[0082] In one possible scenario, the relay device 120 can be a radio frequency (RF) repeater / amplifier. This RF repeater / amplifier can be understood as a base station transmitted remotely by the host station, used to amplify and forward received RF signals; that is, it can be considered a wireless signal relay device. It should be understood that in this application, the RF repeater / amplifier can also be called a radio frequency device, or a radio frequency amplifier, or a radio frequency repeater; this application does not limit this. For example, in one possible implementation, the first device can be a repeater, which can also be called a leaf station.

[0083] In the embodiments of this application, the functions of the network device can be executed by modules (such as chips) within the network device, or by a control subsystem that includes network device functions. This control subsystem, including network device functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions. Likewise, the functions of the relay device can be executed by modules within the relay device, or by a device that includes relay device functions.

[0084] Repeaters are increasingly used as a technology to enhance wireless network coverage, but their development has been hampered by drawbacks such as difficult engineering deployment and poor network performance. If the isolation between the repeater's transmitting and receiving antennas is not properly set, it can easily cause self-oscillation and worsen network coverage.

[0085] Based on this, this application aims to provide a communication method that can fundamentally solve the problem of self-excitation interference of repeaters.

[0086] The embodiments of this application will be described below with reference to the specific accompanying drawings.

[0087] Figure 2 is a schematic flowchart of a communication method 200 provided in an embodiment of this application. As shown in Figure 2, the method may include at least the following steps.

[0088] S210, the first device generates the first signal.

[0089] Specifically, the first signal includes information about the first frequency band, and the first device generates the first signal from the information related to the first frequency band. The information about the first frequency band can be understood as including system information block (SIB), master information block (MIB), cell-specific reference signal (CRS), etc., related to the first frequency band.

[0090] It should be understood that in this application, a signal can carry data; that is, a signal can be understood as a data signal, and the first signal can be understood as the first data signal. Further details will not be elaborated upon below.

[0091] S220, the first device sends a first signal to the second device through the second frequency band, and correspondingly, the first device receives the first signal through the second frequency band.

[0092] Specifically, the first device generates a first signal including information from a first frequency band. Subsequently, the first device transmits the first signal through a second frequency band. In this process, it can be understood that the first device carries the first signal on the second frequency band; that is, the first device "transfers" the first signal from the first frequency band to the second frequency band. In other words, in the embodiments of this application, the second frequency band can be regarded as a transport carrier or transport frequency band for carrying the first signal.

[0093] S230, the second device sends a first signal to the terminal device through the first frequency band, and the terminal device receives the first signal accordingly.

[0094] Specifically, after receiving the first signal via the second frequency band, the second device shifts the first signal from the second frequency band to the first frequency band, and then transmits the first signal to the terminal device via the first frequency band. The first frequency band is different from the second frequency band. Because the first and second frequency bands belong to different frequency bands, the second device achieves frequency-dependent transmission and reception.

[0095] Optionally, in one possible implementation, the first frequency band and the second frequency band belong to different frequency bands. It should be understood that in this implementation, "the first frequency band and the second frequency band belong to different frequency bands" can be interpreted as "the first frequency band and the second frequency band belong to different bands." This will be illustrated with specific examples below.

[0096] For example, according to existing protocols, the first frequency band can be Band 3, that is, the first frequency band can be the 1.8 GHz band, and the second frequency band can be Band 8, that is, the second frequency band can be the 900 MHz band. It should be understood that in the embodiments of this application, the 1.8 GHz band and the 900 MHz band are only illustrative examples. The frequency bands can refer to the frequency bands defined by the 3rd generation partnership project (3GPP) protocol (for example, the frequency bands defined in the TS 36.104 protocol, which is the Long Time Evolution (LTE) protocol, and other protocols such as Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS), and New Radio (NR) also define working frequency bands). This application does not limit this, and it will not be elaborated further below.

[0097] Specifically, the first device generates a first signal, which includes information from the 1.8 GHz frequency band. The first device transmits the first signal to the second device via the 900 MHz frequency band, and correspondingly, the second device receives the first signal via the 900 MHz frequency band. It should be noted that in this implementation, the host station itself has no signal to transmit. After receiving the first signal, the second device shifts the first signal from the 900 MHz frequency band to the 1.8 GHz frequency band and transmits it to the terminal device via the 1.8 GHz frequency band so that the terminal device can perform subsequent operations.

[0098] The following example uses the first device as the host station and the second device as an RF transponder amplification device, and will be explained in detail with reference to the accompanying drawings. For a detailed description of the RF transponder amplification device, please refer to the above text; it will not be repeated here.

[0099] Figure 3 is a schematic diagram of an example communication method provided in an embodiment of this application.

[0100] As shown in Figure 3, a cell #1 with a frequency band of 1.8 GHz is established on the host station side (cell #1 can be understood as a cell under the RF transceiver, such as a relay cell or a leaf station cell, which will not be elaborated further below). The data signal of cell #1, i.e., the first signal, is transmitted to the RF transceiver side by the RF resources in the 900 MHz frequency band after passing through the RF module of the host station. In this process, the 900 MHz frequency band can be understood as the carrier for transporting the first signal, i.e., the 900 MHz frequency band is the transport carrier. After receiving the first signal, the RF transceiver shifts the first signal from the 900 MHz frequency band to the 1.8 GHz frequency band. Subsequently, the first signal is transmitted to the terminal device through the 1.8 GHz frequency band, and correspondingly, the terminal device receives the first signal through the 1.8 GHz frequency band.

[0101] It should be noted that in this example, the first signal is carried in the following ways in the 900MHz and 1.8GHz bands:

[0102] In scenario one, the first signal may occupy a portion of the 900MHz or 1.8GHz frequency band. For example, as shown in Figure 3, the first signal may occupy only a 3MHz frequency range in the 900MHz or 1.8GHz frequency band.

[0103] In the second scenario, the first signal can occupy the entire spectrum range of the 900MHz or 1.8GHz band.

[0104] Optionally, in one possible implementation, the first frequency band and the second frequency band belong to different sub-bands of the same frequency band. It should be understood that in this implementation, "the first frequency band and the second frequency band belong to different sub-bands of the same frequency band" can be interpreted as meaning that the first frequency band and the second frequency band belong to the same frequency band, and that the first frequency band and the second frequency band are different sub-bands within the same frequency band. For example, the first frequency band and the second frequency band may belong to the same band, but the first frequency band and the second frequency band occupy different frequency ranges.

[0105] For example, both the first and second frequency bands belong to Band 8, i.e., the 900MHz band, but both are sub-bands within the 900MHz band. For instance, according to existing protocols, the frequency range of the 900MHz band is 880MHz-915MHz. Therefore, in one example, the first frequency band could be sub-band #1 (e.g., 900MHz-903MHz), and the second frequency band could be sub-band #2 (e.g., 890MHz-893MHz). It should be understood that the frequency ranges of the first and second frequency bands described above are merely illustrative examples, and this application does not impose any limitations on them.

[0106] It is important to note that in this implementation, the signal interference value in the first frequency band is less than a threshold. This threshold is a pre-set signal interference threshold. It should be understood that the signal interference value in the second frequency band being less than the threshold means that the signal interference value in the second frequency band is relatively small.

[0107] Specifically, the first device generates a first signal including information from sub-frequency band #1. The first device sends the first signal to the second device via sub-frequency band #2, and correspondingly, the second device receives the first signal via sub-frequency band #2. It should be noted that in this implementation, the host station itself has no signal to send. After receiving the first signal, the second device detects that the signal interference value on sub-frequency band #2 is less than a threshold. Subsequently, it shifts the first signal from sub-frequency band #2 to sub-frequency band #1 and sends the first signal to the terminal device via sub-frequency band #1 so that the terminal device can perform subsequent operations.

[0108] The following example uses a sub-band #1 (e.g., 900MHz-903MHz) on the 900MHz band as the first frequency band, and a sub-band #2 (e.g., 890MHz-893MHz) on the 900MHz band as the second frequency band, with the first device being the host station and the second device being an RF forwarding and amplification device. This example will be explained in detail with reference to the specific attached diagram.

[0109] Figure 4 is a schematic diagram of a communication method under another example provided in the embodiments of this application.

[0110] As shown in Figure 4, a cell #1 with a frequency band of 900MHz is established on the host station side. The signal transmitted in cell #1, i.e., the first signal, is carried on a sub-band #2 of the 900MHz frequency band and sent to the RF transceiver / amplifier side after passing through the RF module of the host station. In this process, the sub-band #2 of the 900MHz frequency band can be understood as the carrier wave carrying the first signal.

[0111] After receiving the first signal through sub-band #2, the RF repeater needs to shift the first signal to a frequency band with lower interference to resolve signal interference issues. Since the RF repeater detects that the interference value in sub-band #1 is less than a threshold, it can shift the first signal from sub-band #2 to sub-band #1. Further, the RF repeater then transmits the first signal to the terminal device through sub-band #1.

[0112] It should be understood that the above thresholds can be pre-set signal interference thresholds.

[0113] It should also be noted that, in the case where the first frequency band and the second frequency band belong to different sub-bands of the same frequency band, optionally, in one possible implementation, before step S230, the method may further include: the radio frequency transceiver amplification device detecting the signal interference value on the first frequency band.

[0114] For example, in one possible implementation, if the radio frequency transceiver detects that the signal interference value on the first frequency band is less than a threshold, the first signal is shifted from the second frequency band to the first frequency band. That is, the first signal is shifted from sub-frequency band #2 to sub-frequency band #1.

[0115] For example, in one possible implementation, when the RF transceiver detects that the signal interference value on the first frequency band is greater than a threshold, the method may further include: the RF transceiver reducing the signal interference value on the first frequency band. For example, the RF transceiver can reduce the signal interference value on the first frequency band by incorporating a cancellation circuit. As shown in Figure 5, Figure 5 is a logic diagram of an analog + digital cancellation circuit provided in an embodiment of this application.

[0116] Specifically, in one scenario, the RF transceiver amplifier can reduce the signal interference value on the first frequency band (i.e., sub-band #1) by using a built-in interference cancellation circuit. This means it can perform interference cancellation processing on sub-band #1 to eliminate XXdB of signal interference. Alternatively, in another scenario, the RF transceiver amplifier can use a built-in interference cancellation circuit to perform interference cancellation processing on the entire frequency band including sub-band #1 and sub-band #2 (e.g., the 900MHz band mentioned earlier) to eliminate XXdB of signal interference in that 900MHz band.

[0117] Furthermore, the RF transceiver also includes a detection circuit, which is used to detect the signal interference value on the 900MHz band after cancellation processing. When the detection circuit detects that sub-band #2 is the sub-band with the lowest signal interference value, after receiving the first signal through sub-band #2, the RF transceiver shifts the first signal from sub-band #2 to sub-band #1 to suppress self-interference, and then transmits the first signal through sub-band #1.

[0118] It should be noted that the locations of the interference cancellation circuit and detection circuit shown in Figure 5 are merely examples, and this application does not impose any limitations on them.

[0119] It should also be noted that in step S220, in addition to transmitting the first signal through the second frequency band, the first device can also transmit a second signal through the second frequency band. This second signal is the signal that the first device needs to transmit. That is to say, in one possible implementation, the first device can transmit both the first and second signals to the second device through the second frequency band. Correspondingly, the second device receives both the first and second signals through the second frequency band. The above implementation will be described in detail below with specific examples.

[0120] Optionally, in some examples, the first device transmits a first signal and a second signal to the second device via a first sub-band on the second frequency band and a second sub-band on the second frequency band, respectively. That is, the first device transmits the first signal via the first sub-band and the second signal via the second sub-band. The first and second sub-bands do not overlap.

[0121] Accordingly, the second device receives the first signal through the first sub-frequency band and the second signal through the second sub-frequency band. Further, upon receiving the second signal, the second device determines that it is the signal the first device needs to transmit. At this point, the second device filters out the second signal, retaining only the first signal. For example, the second device may have an internal filter to remove the second signal. Subsequently, the second device shifts the first signal from the second frequency band to the first frequency band and transmits it to the terminal device through the first frequency band, enabling the terminal device to perform corresponding services on the first frequency band.

[0122] In one possible implementation, the first frequency band and the second frequency band belong to different frequency bands. This can be understood as the first frequency band and the second frequency band belonging to different bands.

[0123] For example, taking a first frequency band of 1.8 GHz and a second frequency band of 900 MHz, a first device as a host station and a second device as an RF forwarding and amplification device as an example, a detailed description will be provided with reference to the specific accompanying drawings. According to existing protocols, the frequency range of the 900 MHz band is 880 MHz-915 MHz, as shown in Figure 6. Figure 6 is a schematic diagram of another example of a communication method provided by an embodiment of this application.

[0124] After establishing cell #1 in the first frequency band, the host station transmits the data signal of cell #1, i.e., the first signal, to the RF transceiver amplification device on the first sub-band of the second frequency band after passing through the host station's RF module. Furthermore, the host station also transmits its own transmitted data signal, i.e., the second signal, on the second sub-band of the second frequency band to the RF transceiver amplification device. The first sub-band can be a frequency band with a frequency range of 898MHz-900MHz, and the second sub-band can be a frequency band with a frequency range of 890MHz-897MHz. It should be understood that the above frequency ranges are merely examples, and this application does not impose any limitations on them.

[0125] Accordingly, the RF transceiver receives the first signal and the second signal through the first sub-band and the second sub-band, respectively. After determining that the second signal is the data signal that the host station needs to transmit, the RF transceiver filters out the second signal and retains only the first signal. For example, the RF transceiver uses its own filter to filter out the second signal carried on the second sub-band. Subsequently, the first signal is shifted from the 900MHz band to the 1.8GHz band and transmitted to the terminal device through the 1.8GHz band, so that the terminal device can perform corresponding services on the 1.8GHz band.

[0126] In another possible implementation, the first frequency band and the second frequency band are different sub-bands on the same frequency band. For a more detailed description of the first frequency band and the second frequency band being different sub-bands on the same frequency band, please refer to the preceding text; it will not be repeated here.

[0127] For example, taking a sub-band of 900MHz frequency band as an example, with the first device being the host station and the second device being a radio frequency forwarding and amplification device, the following description is provided in conjunction with specific accompanying drawings.

[0128] Figure 7 is a schematic diagram of another example of a communication method provided in an embodiment of this application. As shown in Figure 7, after the host station establishes cell #1 (e.g., a relay cell or a leaf cell) in the first frequency band, the data signal of cell #1, i.e., the first signal, is carried on sub-frequency band a in the second frequency band after passing through the host station's radio frequency module. The spectrum range of sub-frequency band a can be 907MHz-910MHz. Furthermore, the host station also carries its own data signal, i.e., the second signal, on sub-frequency band b in the second frequency band. The spectrum range of sub-frequency band b can be 900MHz-906MHz. After receiving the first and second signals, the radio frequency forwarding and amplification device determines that the second signal is the signal transmitted by the host station and filters out the second signal using its own filter. Subsequently, the first signal on sub-frequency band a is shifted to the first frequency band. At this time, the first frequency band can be a frequency band with a signal interference value less than a threshold, such as sub-frequency band c, and the spectrum range of sub-frequency band c can be 904MHz-907MHz.

[0129] It should be noted that in this implementation, before the RF transponder amplification device shifts the first signal on sub-band a to sub-band c, the method may further include: the RF transponder amplification device performing cancellation processing on the frequency bands where sub-band a and sub-band b are located. For example, the RF transponder amplification device performs cancellation processing on the 900MHz frequency band by using a built-in interference cancellation circuit.

[0130] Optionally, after the radio frequency transceiver performs cancellation processing on the frequency bands containing sub-band a and sub-band b, the method may further include: the radio frequency transceiver determining that the signal interference value of the first frequency band is less than a threshold. For example, the radio frequency transceiver may detect that the signal interference value on the first frequency band is less than a certain threshold through a detection circuit.

[0131] In this context, the frequency bands where sub-bands a and b are located can be understood as: the complete frequency band where sub-bands a and b are located, for example, the complete frequency band where sub-bands a and b are located is the 900MHz frequency band; or, the total frequency band of sub-bands a and b, for example, sub-bands a and b are two non-overlapping frequency bands on the second frequency band, in which case the total frequency band can be understood as the second frequency band.

[0132] It should be noted that the relevant descriptions of the interference cancellation circuit and the detection circuit can be found in the previous text, and will not be repeated here.

[0133] Optionally, in other examples, the first device transmits the first signal and the second signal via a second frequency band. It should be noted that, unlike the examples above, the first device uses the same spectrum range to transmit the first and second signals; in other words, the first and second signals are carried in the same frequency band, i.e., the frequency band carrying the first signal and the frequency band carrying the second signal completely overlap.

[0134] Accordingly, the second device receives the first signal and the second signal via the second frequency band. Subsequently, the second device filters the second signal, retaining only the first signal. Further, the second device shifts the first signal from the second frequency band to the first frequency band and transmits the second signal to the terminal device via the first frequency band. Optionally, the first device transmits the second signal to the terminal device under the first device via the second frequency band.

[0135] In one possible implementation, when the first signal and the second signal are signals of a first type, the time-frequency domain resources for transmitting the first signal and the time-frequency domain resources for transmitting the second signal are the same. That is, the first device transmits the first signal and the second signal on the same time-domain resources and frequency-domain resources, and correspondingly, the second device receives the first signal and the second signal on the same time-domain resources and frequency-domain resources.

[0136] The first type of signal may include at least one of the following: cell-specific reference signal (CRS), master information block (MIB), physical downlink control channel (PDCCH), and physical downlink shared channel (PDSCH).

[0137] It should be understood that the above-mentioned first type of signal is merely an example and this application does not impose any limitations on it.

[0138] In one possible implementation, when the first signal and the second signal are of the second type, the time-domain resources for transmitting the first signal and the time-domain resources for transmitting the second signal are different. That is, the first device transmits the first signal and the second signal on different time-domain resources, and correspondingly, the time-domain resources for the second device to receive the first signal and the time-domain resources for receiving the second signal are also different.

[0139] The second type of signal may include SIB signals. It should be understood that the above-described second type of signal is merely illustrative and is not intended to be limiting.

[0140] For example, the second frequency band can be a portion of the 900MHz band. As another example, the second frequency band can also be the entire 900MHz band. The following explanation uses the example of the second frequency band being a portion of the 900MHz band, for instance, a sub-band with a spectrum range of 890MHz-900MHz, with the first device being the host station and the second device being an RF repeater / amplifier.

[0141] Figure 8 is a schematic diagram of a communication method under another example provided in the embodiments of this application.

[0142] Specifically, as shown in Figure 8, the host station transmits the first and second signals to the RF transceiver / amplifier via a sub-band of 890MHz-900MHz within the 900MHz band. That is, the first and second signals are both carried on the sub-band (890MHz-900MHz) within the 900MHz band. Correspondingly, the RF transceiver / amplifier receives the first and second signals via the same sub-band (890MHz-900MHz).

[0143] In one possible implementation, when the first and second signals are of the first type, the time-frequency domain resources used by the host station to transmit the first signal are the same as those used to transmit the second signal. That is, the host station transmits the first and second signals using the same time and frequency domain resources. Correspondingly, the time-frequency domain resources used by the RF transceiver to receive the first signal are also the same as those used to receive the second signal; in other words, the RF transceiver receives the first and second signals using the same time and frequency domain resources.

[0144] The first type of signal may include at least one of the following: CRS, MIB, PDCCH, PDSCH.

[0145] After receiving the first and second signals via the second frequency band, the RF repeater / amplifier determines that the second signal is the one the host station needs to transmit. It then filters out the second signal using an internal filter, retaining the first signal, and shifts the first signal from the second frequency band to the first frequency band, for example, from the 900MHz band to the 1.8GHz band. Further, the RF repeater / amplifier transmits the first signal to the terminal devices (e.g., leaf station UEs or relay UEs) under its control via the 1.8GHz band (i.e., band F2 in Figure 8). Correspondingly, the host station can also transmit the second signal to its terminal devices (e.g., the host UE) via the 900MHz band (i.e., band F1 in Figure 8).

[0146] It should be understood that the above-mentioned first type of signal is merely an example and this application does not impose any limitations on it.

[0147] In one possible implementation, when the first and second signals are of the second type, the time-domain resources used by the host station to transmit the first signal are different from those used to transmit the second signal. That is, the host station transmits the first and second signals on different time-domain resources, and correspondingly, the time-domain resources used by the radio frequency repeater / amplifier to receive the first signal are also different from those used to receive the second signal.

[0148] The second type of signal may include SIB signals.

[0149] After receiving the first and second signals via the second frequency band, the RF repeater / amplifier determines that the second signal is the one the host station needs to transmit. It then filters out the second signal using an internal filter, retaining only the first signal. The first signal is then shifted from the second frequency band to the first frequency band, for example, from the 900MHz band to the 1.8GHz band. Further, the RF repeater / amplifier transmits the first signal to the terminal devices (e.g., leaf station UEs or relay UEs) under its control via the 1.8GHz band. Correspondingly, the host station can also transmit the second signal to its terminal devices (e.g., the host UE) via the 900MHz band.

[0150] It should be understood that the above-mentioned second type of signal is merely an example and is not intended to limit the scope of this application.

[0151] According to the above technical solution, the self-excitation interference problem of radio frequency forwarding and amplification equipment (such as repeaters) can be fundamentally solved. Furthermore, it eliminates the need to set up a frequency shifting module on the first device (i.e., the host station) side, which can further reduce equipment costs and enable flexible antenna deployment.

[0152] It should be understood that some optional features in the various embodiments of this application may not depend on other features in some scenarios, or may be combined with other features in other scenarios, without limitation.

[0153] It is also understood that the solutions in the various embodiments of this application can be used in a reasonable combination, or the solutions in the various embodiments of this application can be reasonably decoupled, and the explanations or descriptions of the various terms appearing in the embodiments can be referenced or explained to each other in the various embodiments, without limitation.

[0154] It should also be understood that the various numerical sequences in the embodiments of this application do not imply the order of execution, but are merely a distinction for the convenience of description, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0155] It is also understood that some signal names, such as the first signal, are involved in the various embodiments of this application. It should be understood that their naming does not limit the scope of protection of the embodiments of this application.

[0156] It is also understood that, in the above method embodiments, the methods and operations implemented by the first device can also be implemented by components of the first device (e.g., chips or circuits); similarly, the methods and operations implemented by the second device can also be implemented by components of the second device (e.g., chips or circuits), and this application does not impose any limitations. Corresponding to the methods given in the above method embodiments, this application also provides corresponding communication devices, which include modules for executing the corresponding methods in the above method embodiments. These modules can be software, hardware, or a combination of software and hardware. It is understood that the technical features described in the above method embodiments are also applicable to the following device embodiments.

[0157] It should be understood that the first device and the second device can perform some or all of the steps in the above embodiments. These steps or operations are merely examples, and the embodiments of this application can also perform other operations or variations of various operations. Furthermore, the steps can be performed in different orders as presented in the above embodiments, and it is not necessary to perform all the operations in the above embodiments.

[0158] The communication method provided by the embodiments of this application has been described in detail above with reference to Figures 2 to 8. The communication device provided by the embodiments of this application will be described in detail below with reference to Figures 9 to 11. It should be understood that the description of the device embodiments corresponds to the description of the method embodiments. Therefore, for content not described in detail, please refer to the method embodiments above. For the sake of brevity, some content will not be repeated.

[0159] Figure 9 is a schematic block diagram of a communication device 900 provided in an embodiment of this application. As shown in Figure 9, the communication device 900 includes a transceiver unit 910. The transceiver unit 910 can implement corresponding communication functions, and can also be referred to as a communication interface or communication unit. Optionally, the communication device 900 further includes a processing unit 920 for data processing. The communication device 900 is used to implement the functions of the first device and the second device in the method embodiments shown in Figures 2 to 8 above.

[0160] When the communication device 900 is used to implement the function of the first device in the method embodiments shown in Figures 2 to 8, the processing unit 920 is used to generate a first signal, the first signal including information of a first frequency band; the transceiver unit 910 is used to send the first signal to the second device through a second frequency band.

[0161] Optionally, if the first signal and the second signal are signals of a first type, the time-frequency domain resources for transmitting the first signal and the time-frequency domain resources for transmitting the second signal are the same; or, if the first signal and the second signal are signals of a second type, the time-domain resources for transmitting the first signal and the time-domain resources for transmitting the second signal are different.

[0162] Optionally, the first signal is carried on a first sub-band of the second frequency band, and the second signal is carried on a second sub-band of the second frequency band, wherein the first sub-band and the second sub-band do not overlap.

[0163] When the communication device 900 is used to implement the function of the second device in the method embodiments shown in Figures 2 to 8, the transceiver unit 910 is used to receive a first signal from the first device through a second frequency band, the first signal including information of the first frequency band; and to send the first signal to the terminal device through the first frequency band.

[0164] Optionally, the processing unit 920 is configured to detect that the signal interference value on the first frequency band is less than the threshold; or, detect that the signal interference value on the first frequency band is greater than the threshold and reduce the signal interference value on the first frequency band.

[0165] Optionally, the transceiver unit 910 is further configured to receive a second signal via the second frequency band;

[0166] The processing unit 920 is also used to filter out the second signal.

[0167] For a more detailed description of the transceiver unit 910 and the processing unit 920, as well as the meanings of terms such as first signal, second signal, first frequency band, and second frequency band, please refer to the description in the method embodiments shown in Figures 2 to 8.

[0168] It should also be understood that the device 900 here is embodied in the form of a functional unit. The term "unit" here can refer to an application-specific integrated circuit (ASIC), electronic circuitry, a processor (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and memory for executing one or more software or firmware programs, integrated logic circuitry, and / or other suitable components supporting the described functions. In an alternative example, those skilled in the art will understand that the device 900 may specifically be the first device and the second device in the above embodiments, and may be used to execute the various processes and / or steps corresponding to the first device and the second device in the above method embodiments; or, the device 900 may specifically be the first device and the second device in the above embodiments, and may be used to execute the various processes and / or steps corresponding to the first device and the second device in the above method embodiments. To avoid repetition, further details are omitted here.

[0169] The apparatus 900 of each of the above-described solutions has the function of implementing the corresponding steps performed by the first device and the second device in the above-described method; or, the apparatus 900 of each of the above-described solutions has the function of implementing the corresponding steps performed by the first device and the second device in the above-described method. The function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (e.g., the transmitting unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as processing units, can be replaced by processors, respectively executing the transceiver operations and related processing operations in each method embodiment.

[0170] In addition, the transceiver unit 910 can also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit 920 can be a processing circuit.

[0171] It should be noted that the device in Figure 9 can be a network element or device as described in the preceding embodiments, or it can be a chip or a chip system, such as a system on a chip (SoC). The transceiver unit can be an input / output circuit or a communication interface; the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip. No limitations are imposed here.

[0172] As shown in Figure 10, this application embodiment provides another communication device 1000. The device 1000 includes a processor 1010, which is coupled to a memory 1020. The memory 1020 is used to store computer programs or instructions and / or data. The processor 1010 is used to execute the computer programs or instructions stored in the memory 1020, or to read the data stored in the memory 1020, in order to execute the methods in the above method embodiments.

[0173] When the communication device 1000 is used to implement the methods shown in Figures 2 to 8, the processor 1010 is used to implement the functions of the processing unit 920 described above.

[0174] Optionally, there may be one or more processors 1010.

[0175] Optionally, the memory 1020 may be one or more.

[0176] Alternatively, the memory 1020 can be integrated with the processor 1010, or it can be set separately.

[0177] Optionally, as shown in FIG10, the device 1000 further includes a transceiver 1030 for receiving and / or transmitting signals. For example, the processor 1010 is used to control the transceiver 1030 to receive and / or transmit signals.

[0178] When the communication device 1000 is used to implement the methods shown in Figures 2 to 8, the transceiver 1010 is used to implement the functions of the transceiver unit 910 described above.

[0179] For example, processor 1010 is used to execute computer programs or instructions stored in memory 1020 to implement the relevant operations of the terminal device, network device, and CU module in the various method embodiments described above. For example, the method of the first device in any of the embodiments shown in Figures 2 to 8, or the method of the second device in any of the embodiments shown in Figures 2 to 8.

[0180] It should be understood that the processor mentioned in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0181] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory and / or non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0182] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated into the processor.

[0183] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0184] As shown in Figure 11, this application embodiment provides a chip system 1100. The chip system 1100 (or processing system) includes logic circuitry 1110 and an input / output interface 1120. It should be understood that the chip system 1100 can be installed in the aforementioned communication device 900, or in other words, the aforementioned communication device 900 can also include the chip system 1100.

[0185] The logic circuit 1110 can be a processing circuit in the chip system 1100. The logic circuit 1110 can be coupled to a memory unit, calling instructions from the memory unit, enabling the chip system 1100 to implement the methods and functions of the embodiments of this application. The input / output interface 1120 can be an input / output circuit in the chip system 1100, outputting processed information from the chip system 1100, or inputting data or signaling information to be processed into the chip system 1100 for processing.

[0186] As one approach, the chip system 1100 is used to implement the operations performed by the first device and the second device in the various method embodiments described above.

[0187] For example, logic circuit 1110 is used to implement the processing-related operations of the first device and the second device in the above method embodiments, such as the processing-related operations of the first device and the second device in any of the embodiments shown in Figures 2 to 8. That is, logic circuit 1110 is used to implement the function of the processing unit 920. Input / output interface 1120 is used to implement the sending and / or receiving-related operations of the first device and the second device in the above method embodiments, such as the sending and / or receiving-related operations performed by the first device and the second device in any of the embodiments shown in Figures 2 to 8. That is, input / output interface 1120 is used to implement the function of the transceiver unit 910.

[0188] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods executed by the first device and the second device in the above-described method embodiments.

[0189] For example, when the computer program is executed by the computer, it enables the computer to implement the methods performed by the first device and the second device in the various embodiments of the above methods.

[0190] This application also provides a computer program product comprising instructions which, when executed by a computer, implement the methods performed by the first device and the second device in the above-described method embodiments.

[0191] The explanations and beneficial effects of the relevant contents in any of the devices provided above can be found in the corresponding method embodiments provided above, and will not be repeated here.

[0192] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of apparatus or units may be electrical, mechanical, or other forms.

[0193] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0194] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0195] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0196] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0197] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0198] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, The method includes: A first device generates a first signal, the first signal including information of a first frequency band; The first device sends the first signal to the second device via the second frequency band; The second device receives the first signal via the second frequency band; The second device sends the first signal to the terminal device via the first frequency band; The first frequency band is different from the second frequency band.

2. The method according to claim 1, characterized in that, The first frequency band and the second frequency band belong to different frequency bands.

3. The method according to claim 1, characterized in that, The first frequency band and the second frequency band belong to different sub-bands of the same frequency band. Wherein, the signal interference value on the first frequency band is less than the threshold.

4. The method according to claim 3, characterized in that, Before the second device transmits the first signal to the terminal device via the first frequency band, the method further includes: The second device detects that the signal interference value on the first frequency band is less than the threshold; or, The second device detects that the signal interference value on the first frequency band is greater than the threshold, and reduces the signal interference value on the first frequency band.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: The second signal is received via the second frequency band; Filter out the second signal; in, When the first signal and the second signal are of the first type, the time-frequency domain resources for receiving the first signal and the time-frequency domain resources for receiving the second signal are the same; or, When the first signal and the second signal are of the second type, the time-domain resources for receiving the first signal and the time-domain resources for receiving the second signal are different.

6. The method according to any one of claims 1 to 4, characterized in that, The method further includes: The second signal is received via the second frequency band; Filter out the second signal; Wherein, the first signal is carried on a first sub-band of the second frequency band, the second signal is carried on a second sub-band of the second frequency band, and the first sub-band and the second sub-band do not overlap.

7. A communication method, characterized in that, The method is performed by a first device, and the method includes: Generate a first signal, the first signal including information of a first frequency band; The first signal is transmitted to the second device via the second frequency band, wherein the first frequency band and the second frequency band belong to different frequency bands.

8. The method according to claim 7, characterized in that, The first frequency band and the second frequency band belong to different frequency bands.

9. The method according to claim 7, characterized in that, The first frequency band and the second frequency band belong to different sub-bands of the same frequency band. Wherein, the signal interference value on the first frequency band is less than the threshold.

10. The method according to any one of claims 7 to 9, characterized in that, The method further includes: A second signal is transmitted to the second device via the second frequency band; wherein... When the first signal and the second signal are of the first type, the time-frequency domain resources for transmitting the first signal and the time-frequency domain resources for transmitting the second signal are the same; or, When the first signal and the second signal are of the second type, the time-domain resources for transmitting the first signal and the time-domain resources for transmitting the second signal are different.

11. The method according to any one of claims 7 to 9, characterized in that, The method further includes: A second signal is sent to the second device via the second frequency band, wherein... The first signal is carried on a first sub-band of the second frequency band, and the second signal is carried on a second sub-band of the second frequency band. The first sub-band and the second sub-band do not overlap.

12. A communication method, characterized in that, The method is performed by a second device, and the method includes: A first signal is received from a first device via a second frequency band, the first signal including information of the first frequency band; The first signal is sent to the terminal device via the first frequency band; The first frequency band is different from the second frequency band.

13. The method according to claim 12, characterized in that, The first frequency band and the second frequency band belong to different frequency bands.

14. The method according to claim 12, characterized in that, The first frequency band and the second frequency band belong to different sub-bands of the same frequency band. Wherein, the signal interference value on the first frequency band is less than the threshold.

15. The method according to claim 14, characterized in that, Before the second device transmits the first signal to the terminal device via the first frequency band, the method further includes: The signal interference value detected in the first frequency band is less than the threshold; or... The signal interference value on the first frequency band is detected to be greater than the threshold, and the signal interference value on the first frequency band is reduced.

16. The method according to any one of claims 12 to 15, characterized in that, The method further includes: The second signal is received via the second frequency band; Filter out the second signal; in, When the first signal and the second signal are of the first type, the time-frequency domain resources for receiving the first signal and the time-frequency domain resources for receiving the second signal are the same; or, When the first signal and the second signal are of the second type, the time-domain resources for receiving the first signal and the time-domain resources for receiving the second signal are different.

17. The method according to any one of claims 12 to 15, characterized in that, The method further includes: The second signal is received via the second frequency band; Filter out the second signal; Wherein, the first signal is carried on a first sub-band of the second frequency band, the second signal is carried on a second sub-band of the second frequency band, and the first sub-band and the second sub-band do not overlap.

18. A communication device, characterized in that, include: A processor for executing a computer program stored in a memory to cause the apparatus to perform the method as claimed in any one of claims 1 to 6, or to cause the apparatus to perform the method as claimed in any one of claims 7 to 11, or to cause the apparatus to perform the method as claimed in any one of claims 12 to 17.

19. A chip, characterized in that, The device includes a processor coupled to a memory for storing a computer program, the processor for executing the computer program stored in the memory to implement the method as claimed in any one of claims 1 to 6, or the processor for executing the computer program stored in the memory to implement the method as claimed in any one of claims 7 to 11, or the processor for executing the computer program stored in the memory to implement the method as claimed in any one of claims 12 to 17.

20. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, When the computer program or instructions are executed by a processor, the method as described in any one of claims 1 to 6 is performed, or the method as described in any one of claims 7 to 11 is performed, or the method as described in any one of claims 12 to 17 is performed.

21. A computer program product containing instructions, characterized in that, when run on a computer, This causes the method as described in any one of claims 1 to 6 to be performed, or the method as described in any one of claims 7 to 11 to be performed, or the method as described in any one of claims 12 to 17 to be performed.

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