WO2020133213A1

WO2020133213A1 - Signal sampling method, terminal device and network device

Info

Publication number: WO2020133213A1
Application number: PCT/CN2018/124872
Authority: WO
Inventors: 张治�
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2020-07-02
Also published as: CN112585875A; CN112585875B

Abstract

The embodiments of the present application relate to a signal sampling method, a terminal device and a network device. The method comprises: a terminal device sampling, in at least one sampling time period, an uplink signal that causes self-interference, wherein in the at least one sampling time period, there is no downlink signal for the terminal device. According to the signal sampling method, the terminal device and the network device in the embodiments of the present application, a clean uplink signal that causes self-interference can be collected.

Description

Method for sampling signal, terminal equipment and network equipment

Technical field

This application relates to the field of communications, and in particular to a method for sampling signals, terminal equipment, and network equipment.

Background technique

When a terminal device works on two or more carriers in different frequency bands at the same time, the uplink signals of these carriers may cause self-interference to the downlink received signals of some carriers.

When self-interference occurs in the terminal equipment, there is no clear regulation on how to sample the uplink signal that generates self-interference.

Summary of the invention

Embodiments of the present application provide a signal sampling method, terminal equipment, and network equipment, which can collect clean uplink signals that generate self-interference.

In a first aspect, a method for sampling a signal is provided. The method includes:

The terminal device samples an uplink signal that generates self-interference during at least one sampling period, wherein, during the at least one sampling period, there is no downlink signal directed to the terminal device.

In a second aspect, a method for sampling a signal is provided, the method including:

The network device sends instruction information to the terminal device, where the instruction information is used to indicate at least one sampling period, wherein, during the at least one sampling period, there is no downlink signal directed to the terminal device.

In a third aspect, a terminal device is provided for executing the method in the above-mentioned first aspect or various implementations thereof.

Specifically, the terminal device includes a functional module for performing the method in the above-mentioned first aspect or various implementations thereof.

According to a fourth aspect, a network device is provided for performing the method in the above-mentioned second aspect or various implementations thereof.

Specifically, the network device includes a functional module for performing the method in the above-mentioned second aspect or various implementations thereof.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its various implementations.

In a sixth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or its implementations.

According to a seventh aspect, a chip is provided for implementing any one of the above-mentioned first to second aspects or the method in each implementation manner.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the first aspect to the second aspect described above or its respective implementations method.

According to an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to execute the method in any one of the first to second aspects or the various implementations thereof.

In a ninth aspect, a computer program product is provided, including computer program instructions, which cause the computer to execute the method in any one of the above first to second aspects or in various implementations thereof.

According to a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to execute the method in any one of the above first to second aspects or the respective implementations thereof.

In the above technical solution, the terminal device can sample the uplink signal that generates self-interference in at least one sampling period. Since there is no downlink signal directed to the terminal device in the sampling period, a clean uplink signal that generates self-interference can be sampled .

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.

FIG. 2 is a schematic flowchart of a signal sampling method according to an embodiment of the present application.

FIG. 3 is a schematic flowchart of another method for sampling a signal according to an embodiment of the present application.

4 is a schematic block diagram of a terminal device provided by an embodiment of the present application.

FIG. 5 is a schematic block diagram of a network device provided by an embodiment of the present application.

6 is a schematic block diagram of a communication device provided by an embodiment of the present application.

7 is a schematic block diagram of a chip provided by an embodiment of the present application.

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

detailed description

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

The embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (Wideband Code) Division Multiple Access (WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, new wireless (New Radio, NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Network (WLAN), Wireless Fidelity (WiFi), next-generation communication system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technologies, mobile communication systems will not only support traditional communication, but also support, for example, device to device (Device to Device, D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and vehicle-to-vehicle (V2V) communication, etc. The embodiments of the present application can also be applied to these communications system.

Optionally, the communication system in the embodiments of the present application may be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) configuration. Web scene.

The embodiments of the present application do not limit the applied frequency spectrum. For example, the embodiments of the present application may be applied to licensed spectrum or unlicensed spectrum.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.

The communication system 100 also includes at least one terminal device 120 within the coverage of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Lines (Digital Subscriber Line, DSL), digital cables, direct cable connections ; And/or another data connection/network; and/or via wireless interfaces, such as for cellular networks, wireless local area networks (Wireless Local Area Network, WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device configured to receive/transmit communication signals; and/or Internet of Things (IoT) equipment. A terminal device configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communication Systems (PCS) terminals that can combine cellular radiotelephones with data processing, facsimile, and data communication capabilities; can include radiotelephones, pagers, Internet/internal PDA with networked access, web browser, notepad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palm-type receivers or others including radiotelephone transceivers Electronic device. Terminal equipment can refer to access terminal, user equipment (User Equipment), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or User device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices, or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in a 5G network, or terminal devices in a PLMN that will evolve in the future, etc.

Optionally, D2D communication may be performed between the terminal devices 120.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.

When a terminal device works simultaneously on two or more carriers in different frequency bands, the uplink signals of these carriers may interfere with the downlink received signals of some carriers. Assuming that carrier F1 works in the low frequency band and carrier F2 works in the high frequency band, there may be three different types of mutual interference:

1. The frequency band of a certain order intermodulation signal (Intermodulation, IM) of the F1 uplink carrier and the F2 uplink carrier overlaps or partially overlaps with a carrier F3 downlink signal frequency band. Then the carriers F1 and F2 constitute interference to F3.

The carrier F3 in the above content may be one of the carriers F1 or F2, or may be another carrier different from F1 or F2 (in this case, the terminal device may work on more than two carriers simultaneously). For example, if the terminal equipment is configured with LTE carriers with Bandwidth 1 and Band 7 and NR carriers (3400-3800MHz), if the uplink carrier of Band 7 and the uplink carrier of NR are transmitted at the same time, the 5th order intermodulation effect Will affect the downlink receiver sensitivity of bandwidth 1.

2. The frequency multiplication of the uplink carrier of F1 overlaps or partially overlaps with the frequency of the downlink signal of F2, then the carrier F1 constitutes harmonic interference to F2.

For example, the frequency band of the uplink carrier of LTE Band 3 is 1710-1785MHz, and its second-order harmonic range is 3420-3570MHz. If the terminal equipment simultaneously performs LTE uplink transmission on Band 3 and downlink reception on the NR band 3400-3800 MHz, the second-order harmonics may interfere with the sensitivity of the NR downlink receiver.

3. The frequency multiplier of F1's downlink carrier overlaps or partially overlaps with F2's uplink signal frequency band (and its adjacent frequency bands), then carrier F2 constitutes harmonic intermodulation (Harmonic) interference to F1.

For example, the frequency band of the downlink carrier of LTE Band 3 is 1805-1880MHz, and its second-order harmonic range is 3610-3760MHz. If the terminal equipment simultaneously performs LTE downlink reception on band 3 and uplink transmission on the NR band 3400-3800 MHz, the second-order harmonic intermodulation of NR may interfere with the sensitivity of the LTE downlink receiver.

Since the self-interference described in the above content is generated inside the terminal device, if the terminal device can eliminate the self-interference, the performance of the terminal device and the system will be greatly improved.

In the process of terminal equipment performing self-interference cancellation, it is more important to sample the uplink signal that generates self-interference. In view of this, an embodiment of the present application provides a method for sampling signals, and when a terminal device generates self-interference, a clean uplink signal that generates self-interference can be collected.

FIG. 2 is a schematic flowchart of a communication method 200 according to an embodiment of the present application. The method 200 may be executed by a terminal device, and may include at least part of the following content.

In 210, the terminal device samples an uplink signal that generates self-interference in at least one sampling period. In at least one sampling period, there is no downlink signal directed to the terminal device.

FIG. 3 is a schematic flowchart of a communication method 300 according to an embodiment of the present application. The method 300 may be performed by a network device, and may include at least part of the following content.

In 310, the network device sends instruction information to the terminal device, where the instruction information is used to indicate at least one sampling period.

Wherein, during the at least one sampling period, there is no downlink signal directed to the terminal device.

The communication method of the embodiment of the present application will be further described below with reference to FIGS. 2 and 3. It should be understood that the content described below can be applied to both the method 200 and the method 300. The embodiments are mostly described from the perspective of the terminal device. It can be understood that the terminal device receives from the network device, which means that the network device has sent.

It should also be understood that the embodiments of the present application do not specifically limit the self-interference of the terminal device. For example, in some embodiments of the present application, the self-interference signal can be classified into three categories according to the source.

Among them, the first type of self-interfering signal may be harmonic or intermodulation interference generated by one or several transmitted signals of the communication system. For example, it may be harmonic or intermodulation interference generated by one or several transmitted signals of a cellular communication system.

The second type of self-interference signal comes from the interference between different wireless communication modules inside the terminal device, for example, the interference between WiFi signals and cellular signals.

The third type of self-interference signal mainly originates from the electromagnetic waves generated by some active electronic devices inside the terminal equipment. For example, electromagnetic waves generated by electronic devices such as the display screen of the terminal device, the memory reading device of the terminal device, the camera and the electric motor of the terminal device. The frequency range of the electromagnetic wave may be tens of MHz to hundreds of MHz. When its harmonic falls on the cellular frequency band or its harmonic intermodulates with the transmitted signal of the cellular frequency band, the electromagnetic wave will produce the reception of the cellular frequency band interference.

In the embodiment of the present application, when the terminal device samples the uplink signal that generates self-interference in at least one sampling period, it may be directed to generating the first type of self-interference signal, the second type of self-interference signal, and the third type of self-interference signal. At least one of the upstream signals is sampled.

For example, the terminal device may sample the uplink signal that generates the first type of self-interference in at least one sampling period.

In the embodiment of the present application, the terminal device may work on multiple frequency bands at the same time. For example, terminal equipment can work in both high and low frequency bands.

In the embodiment of the present application, during the sampling period, there is no downlink signal directed to the terminal device can be understood as: during the sampling period, there is only uplink signal directed to the terminal device (referred to as the first terminal device for convenience of description). ; Or, only the uplink signal for the first terminal device and the signal of the second terminal device (the uplink signal and/or downlink signal of the second terminal device), where the second terminal device is other than the first terminal device Other terminal equipment.

It should be noted that the "first" and "second" mentioned in the above content are only for distinguishing different objects, but do not limit the scope of the embodiments of the present application.

Optionally, the sampling period in the embodiment of the present application may include at least one time unit. Optionally, the time unit may be a subframe, a time slot, a symbol, or a short transmission time interval (Short Transmission Timing Interval, sTTI). For example, the sampling period may include at least one symbol.

Among them, the terminal device and the network device can negotiate in advance the time unit included in the sampling period. For example, the terminal device and the network device negotiate that the time unit included in the sampling period is a symbol.

Optionally, the parameters of the sampling period may include, but are not limited to, at least one of the following: the number of sampling periods, the length of the sampling period, and the period of the sampling period. It should be understood that the period of the sampling period mentioned here may be understood as the period in which the terminal device samples the uplink signal that generates self-interference.

Generally speaking, when the terminal equipment works in DC or CA mode, the terminal equipment may be subject to harmonic interference, intermodulation interference, or both harmonic or intermodulation interference. In each type of interference, terminal equipment may also be subject to interference of different orders. For example, harmonic interference can be divided into 2nd harmonic, 3rd harmonic, and 4th harmonic. Intermodulation interference can be divided into 2nd order intermodulation, 3rd order intermodulation, and 4th order intermodulation.

Assuming that the frequency band combination of the two-way signals of the terminal equipment is (f1, f2), the harmonic interference of f1 can occur at 2*f1, 3*f1, 4*f1... respectively, at each frequency doubling, the harmonic of f2 Waves can occur on 2*f2, 3*f2, 4*f2... each octave. The intermodulation interference of (f1, f2) can occur on the combination of frequency bands of (f1, f2). Specifically, for the second intermodulation, interference can occur on the combination of frequency bands of (f1, f2). For the third intermodulation, the interference can occur on the combination of the two frequency bands (2*f1, f2) and (f1,2*f2); for the fourth intermodulation, the interference can occur in (2* f1,2*f2), (3*f1,f2), (f1,3*f2) these three pairs of frequency band combinations; for five-time intermodulation, interference can occur in (3*f1,2*f2) , (2*f1,3*f2), (f1,4*f2), (4*f1,f2) these four pairs of frequency band combination. Other higher-order intermodulations can be deduced by analogy.

Regarding the number of sampling periods, as an example, the number of sampling periods may be related to the type of interference that generates self-interference, that is, the number of sampling periods may be determined based on the type of interference that generates self-interference.

For example, when the interference type is harmonic interference, the number of sampling periods may be one within a period. At this time, the terminal device can sample the uplink signal that generates self-interference within a sampling period.

As another example, when the interference type is intermodulation interference, the number of sampling periods may be two in one cycle. At this time, the terminal device can sample the uplink signal that generates self-interference within two sampling periods.

For another example, when the interference types are harmonic interference and intermodulation interference, the number of sampling periods may be three in one cycle. At this time, the terminal device can sample the uplink signal that generates self-interference within three sampling periods.

It should be understood that for harmonic interference, self-interference is generated from a traveling signal on a certain road, so when an uplink signal that generates harmonic interference is sampled by a terminal device, a sampling period may be required within a cycle. For intermodulation interference, self-interference is generated from the two-way traveling signal. The terminal device may require two sampling periods. During these two sampling periods, the terminal device samples the two-way traveling signal separately.

As another example, the number of sampling periods may be related to a method in which the terminal device samples uplink signals that generate self-interference.

Taking intermodulation interference as an example, if the terminal device only samples the interference source signal (that is, the original uplink signal), the terminal device can sample in two sampling periods, that is, the terminal device samples the traveling signals on the two lines once; if the terminal If the equipment samples each harmonic component of the interference source signal, the terminal equipment can sample in more than two sampling periods. For example, if the terminal device is simultaneously subjected to 2nd and 3rd intermodulation interference of a frequency band combination, the terminal device may require 3 sampling periods.

It should be noted that the above description on determining the number of sampling periods required when the terminal device samples the uplink signal that generates self-interference is only an example, and does not limit the scope of the embodiments of the present application. The number of sampling periods required by the terminal equipment may depend on the frequency band or frequency band combination that constitutes self-interference. For example, assuming that the combination of frequency bands of the signals on the two roads is (f1, f2), if (2*f1, f2) constitutes intermodulation interference, the terminal device can sample the 2*f1 and f2 frequency bands in two sampling periods respectively Signal; if 2*f1 constitutes harmonic interference and (2*f1, f2) constitutes intermodulation interference, the terminal equipment can sample the signals on the 2*f1 and f2 frequency bands in two sampling periods; if 2*f1 It constitutes harmonic interference, and (f1,2*f2) constitutes intermodulation interference, then the terminal device can sample the signals on the 2*f1, f2 and 2*f2 frequency bands within three sampling periods respectively.

Regarding the length of the sampling period, as an example, the length of the sampling period required by different terminal devices may be different.

For example, the length of the sampling period required by the terminal device 1 may be 1 symbol, the length of the sampling period required by the terminal device 2 may be 2 symbols, and the length of the sampling period required by the terminal device 3 may be less than One symbol length.

As another example, the length of the sampling period may be related to SubCarrier Spacing (SCS). Exemplarily, the length of the sampling period corresponding to different subcarrier intervals may be different. For example, when the subcarrier interval is 15KHz, the length of the sampling period is 1 symbol; when the subcarrier interval is 60KHz, the length of the sampling period is 2 symbols.

As another example, the length of the sampling period may be related to the frequency band where the upstream signal is located. Exemplarily, the length of the sampling period corresponding to the frequency band where different upstream signals are located may be different.

As another example, the length of the sampling period may be related to the type of interference that generates self-interference. Illustratively, the length of the sampling period corresponding to intermodulation interference may be 1 symbol, and the length of the sampling period corresponding to harmonic interference may be 2 symbols.

For example, the terminal device or the network device may determine the period and length of the sampling period based on the frequency band where the uplink signal is located and/or the type of interference generated from interference.

It should be understood that the term “and/or” in the above content is merely an association relationship that describes an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate: A exists alone, and A exists at the same time. And B, there are three cases of B alone.

Regarding the period of the sampling period, as an example, the period of the sampling period required by different terminal devices may be different. For example, the period of the sampling period required by the terminal device 1 may be 10 ms, and the period of the sampling period required by the terminal device 2 may be 20 ms.

As another example, the period of the sampling period may be related to the frequency band where the uplink signal that generates self-interference is located. The frequency band of the upstream signal is different, and the period of the sampling period may be different.

As another example, the period of the sampling period may be related to the type of interference. Different types of interference, the period of the sampling period can be different.

In the embodiment of the present application, the terminal device may first acquire at least one sampling period, and then acquire the at least one sampling period before sampling the uplink signal that generates self-interference.

The embodiments of the present application provide three methods for the terminal device to acquire at least one sampling period, which will be described in detail below.

Way 1

The terminal device acquiring the at least one sampling period may include: the terminal device acquiring the at least one sampling period based on the preset sampling period on the terminal device.

Optionally, the at least one sampling period may be specified by a protocol and preset on the terminal device.

Way 2

The terminal device acquiring the at least one sampling period may include: the terminal device receiving indication information sent by the network device, where the indication information is used to indicate at least one sampling period. Therefore, the terminal device can acquire at least one sampling period.

Optionally, if the at least one sampling period includes multiple sampling periods, the indication information may also be used to indicate the uplink signal corresponding to each sampling period in the multiple sampling periods. Among them, different upstream signals are located in different frequency bands.

For example, there are two signals S1 and S2 that will intermodulate the reception of the terminal device. At this time, the two sampling periods configured by the network device to the terminal device are T1 and T2, and the network device can also indicate to the terminal device At T1, there is only the upstream signal S1, and there is no received signal and upstream signal S2; at T2, there is only S2, and there is no received signal and S1, that is, T1 corresponds to S1, and T2 corresponds to S2. In this way, the terminal device can sample S1 at T1 and S2 at T2.

Optionally, the indication information may also be used to indicate the frequency band or band combination that generates self-interference.

For example, the two signals S1 and S2 intermodulate the reception of the terminal device, where the frequency band of S1 self-interference is Bx, and the frequency band of S2 self-interference is By, then the network device can indicate to the terminal device (S1, S2 ) The corresponding frequency band combination (Bx, By).

Optionally, the indication information may also be used to indicate the period of at least one sampling period.

Optionally, the terminal device receiving the instruction information sent by the network device may include: the terminal device periodically receives the instruction information sent by the network device. For example, the network device sends instruction information to the terminal device every 10 ms, and accordingly, the terminal device receives the instruction information sent by the network device every 10 ms.

In one example, the network device may periodically indicate to the terminal device a period of at least one sampling period. In this way, the self-interference cancellation algorithm can periodically update various parameters, thereby ensuring the effect of self-interference cancellation.

In method 2, the network device may actively send the instruction information to the terminal device, or may send the instruction information to the terminal device based on the request message of the terminal device. When the network device sends the indication information to the terminal device based on the request message of the terminal device, the method in the embodiment of the present application may further include: the terminal device sends a request message to the network device, where the request message is used to request at least one sampling period. After receiving the request message, the network device may send a request response message to the terminal device, where the request response message includes instruction information.

Optionally, the request message may include at least one of the following parameters: the number of sampling periods required for the terminal device to sample the uplink signal, the length of the sampling period required for the terminal device to sample the uplink signal, the frequency band where the uplink signal is located, and the The type of interference and the period of the sampling period required for the terminal device to sample the upstream signal.

Exemplarily, if the number of sampling periods required by the terminal device to sample the uplink signal in the request message is 2, the network device may configure 2 sampling periods to the terminal device after receiving the request message.

For another example, if the request message includes the type of interference generated by self-interference is harmonic interference and the length of the sampling period required for the terminal device to sample the uplink signal is 2 symbols, after receiving the request message, the network device may The terminal device is configured with a sampling period of 2 symbols.

If the request message includes the length of the sampling period required for the terminal device to sample the uplink signal, optionally, at this time, the request message may also include the length of the sampling period corresponding to different subcarrier intervals.

It should be noted that the number of sampling periods, the length of the sampling period, and the period of the sampling period required by the terminal device to sample the uplink signal included in the request message and the number of sampling periods, the length of the sampling period, and the sampling period indicated by the network device The period may be the same or different, which is not specifically limited in the embodiments of the present application. For example, the number of sampling periods required for the terminal device included in the request message to sample the upstream signal is 2, and after receiving the request message, the network device may configure 3 sampling periods for the terminal device.

In a possible embodiment, when the network device indicates at least one sampling period to the terminal device based on the request message of the terminal device, the network device may indicate to the terminal device the parameters of the sampling period not included in the request message based on the default value .

Exemplarily, if the request message does not include the number of sampling periods required by the terminal device to sample the uplink signal, the network device may indicate the number of sampling periods to the terminal device according to the default value of the number of sampling periods.

Optionally, the network device may indicate the number of sampling periods to the terminal device based on the number of default sampling periods corresponding to the frequency band where the uplink signal generates interference.

For example, if a frequency band combination has 1 type of harmonic interference, the default sampling period number is 1; if a frequency band combination has 1 intermodulation type interference, the default sampling period number is 2; if a frequency band combination There are 1 type of harmonic interference and 1 type of intermodulation interference, the number of default sampling periods is 3.

For another example, if the request message does not include the length of the sampling period required by the terminal device to sample the uplink signal, the network device may indicate the length of the sampling period to the terminal device according to the default value of the length of the sampling period.

Optionally, each subcarrier interval may have a default sampling period length, and different frequency bands or frequency band combinations may have different default sampling period lengths, then the network device may be based on the subcarrier interval and/or frequency band Indicates the length of the sampling period to the terminal device.

For another example, if the request message does not include the period of the sampling period required by the terminal device to sample the uplink signal, the network device may indicate the period of the sampling period to the terminal device according to the default value of the period of the sampling period.

Alternatively, the default value of the period of the sampling period may be a uniform value, such as 10 ms.

Optionally, different frequency bands or combinations of frequency bands may have different periods of the default sampling period, then the network device may indicate the period of the sampling period to the terminal device based on the frequency bands or combination of frequency bands that generate interference based on the uplink signal.

Way 3

The terminal device acquiring the at least one sampling period may include: a part of the parameters of the sampling period is preset on the terminal device, and another part of the parameters of the sampling period is obtained based on the indication information sent by the network device.

Exemplarily, the parameter of the sampling period preset on the terminal device may be the length of the sampling period, and the parameter of the sampling period acquired based on the instruction information sent by the network device may be the number and period of the sampling period.

It should be understood that, for a specific implementation manner of manner 3, reference may be made to the description of the first two manners, and here, for the sake of conciseness, no further description is required.

It should be noted that the three implementation manners in which the terminal device acquires at least one sampling period in the foregoing content are merely examples, and do not constitute a limitation on the embodiments of the present application. That is to say, in the embodiment of the present application, the terminal device may also obtain at least one sampling period based on other methods than the three methods mentioned above.

After acquiring at least one sampling period, the terminal device may sample the uplink signal that generates self-interference in at least one sampling period. Wherein, the terminal device sampling the uplink signal generated from interference in at least one sampling period may include: the terminal device sampling the uplink signal in a frequency band where the uplink signal generates interference in at least one sampling period.

Exemplarily, assuming that the frequency band combination of the two-way traveling signals is (f1, f2), when the terminal device samples the self-interfering harmonic signals, only the components constituting the harmonics may be sampled. For example, if the second harmonic of the uplink signal in the frequency band f1 generates self-interference, the terminal device may sample in the frequency band of 2*f1.

When the terminal equipment samples intermodulation signals that generate self-interference, each frequency band component that constitutes intermodulation can be sampled separately. For example, if (2*f1, f2) constitutes intermodulation interference, the terminal device can sample on the 2*f1 and f2 frequency bands within two sampling periods, respectively. For another example, if 2*f1 constitutes harmonic interference and (2*f1, f2) constitutes intermodulation interference, the terminal device may sample on the 2*f1 and f2 frequency bands within two sampling periods, respectively. Furthermore, if 2*f1 constitutes harmonic interference and (f1,2*f2) constitutes intermodulation interference, the terminal device can sample on the 2*f1, f2, and 2*f2 frequency bands within three sampling periods.

After the terminal device samples the uplink signal that generates self-interference, the method in the embodiment of the present application may further include: the terminal device performs self-interference cancellation based on the sampled uplink signal.

The basic principle of terminal equipment for self-interference cancellation is: the terminal equipment couples a part of the uplink signal that generates self-interference as a reference signal, and then applies corresponding gain, delay and phase adjustment to the reference signal to construct the actual self-interference signal power The equal and opposite phase cancellation signals finally achieve destructive interference cancellation of the self-interfering signal at the receiving end. In other words, the essence of the terminal equipment performing self-interference cancellation is to implement a self-interference reconstruction model inside the terminal equipment.

Among them, the self-interference cancellation technology of the terminal equipment can be divided into digital and analog. For the simulated self-interference cancellation technology, the radio frequency signal transmitted from the terminal side is directly sampled, the interference signal is reconstructed by the sampling signal, and then eliminated at the radio frequency front end. For digital self-interference cancellation technology, the upstream signal is sampled from the baseband signal, the interference signal is reconstructed on the baseband, and then eliminated on the baseband.

In the embodiment of the present application, the terminal device can sample the uplink signal that generates self-interference in at least one sampling period. Since there is no downlink signal directed to the terminal device in the sampling period, a clean uplink that generates self-interference can be sampled signal.

It should be noted that, without conflict, the embodiments described in this application and/or the technical features in each embodiment can be arbitrarily combined with each other, and the technical solution obtained after the combination should also fall within the scope of protection of this application .

It should be understood that in various embodiments of the present application, the size of the sequence numbers of the above processes does not mean that the execution order is sequential, and the execution order of each process should be determined by its function and inherent logic, and should not correspond to the embodiments of the present application The implementation process constitutes no limitation.

The communication method according to the embodiment of the present application is described in detail above. The communication device according to the embodiment of the present application will be described below with reference to FIGS. 4 to 6. The technical features described in the method embodiment are applicable to the following device embodiments.

FIG. 4 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG. 4, the terminal device 400 includes:

The processing unit 410 is configured to sample an uplink signal that generates self-interference in at least one sampling period, wherein, in the at least one sampling period, there is no downlink signal directed to the terminal device.

Optionally, in the embodiment of the present application, the terminal device 400 may further include: a communication unit 420, configured to receive indication information sent by a network device, where the indication information is used to indicate the at least one sampling period.

Optionally, in the embodiment of the present application, the communication unit 420 may be further configured to send a request message to the network device, where the request message is used to request the at least one sampling period.

Optionally, in the embodiment of the present application, the request message includes at least one of the following parameters:

The number of sampling periods required for the terminal device 400 to sample the uplink signal;

The length of the sampling period required for the terminal device 400 to sample the uplink signal;

The frequency band where the uplink signal is located;

Types of interference that cause self-interference;

The period of the sampling period required for the terminal device 400 to sample the uplink signal.

Optionally, in the embodiment of the present application, if the at least one sampling period includes multiple sampling periods, the indication information is further used to indicate an uplink signal corresponding to each sampling period in the multiple sampling periods, where, Different upstream signals have different frequency bands.

Optionally, in the embodiment of the present application, the indication information is also used to indicate the period of the at least one sampling period.

Optionally, in the embodiment of the present application, the number of the at least one sampling period is determined based on the type of interference that generates self-interference.

Optionally, in the embodiment of the present application, when the interference type is a harmonic interference, the at least one sampling period includes one sampling period.

Optionally, in the embodiment of the present application, when the interference type is intermodulation interference, the at least one sampling period includes two sampling periods.

Optionally, in the embodiment of the present application, the period and length of the at least one sampling period are determined based on the frequency band where the uplink signal is located and/or the type of interference generated from interference.

Optionally, in the embodiment of the present application, the processing unit 410 is specifically configured to: during the at least one sampling period, sample the uplink signal in a frequency band where the uplink signal generates self-interference.

Optionally, in the embodiment of the present application, the processing unit 410 may be further configured to: perform self-interference cancellation based on the uplink signal.

Optionally, in the embodiment of the present application, the terminal device 400 works on multiple frequency bands at the same time.

Optionally, in the embodiment of the present application, the sampling period includes at least one symbol.

It should be understood that the terminal device 400 may correspond to the terminal device in the method 200, and the corresponding operation of the terminal device in the method 400 may be implemented. For the sake of brevity, no further description is provided here.

FIG. 5 shows a schematic block diagram of a network device 500 according to an embodiment of the present application. As shown in FIG. 5, the network device 500 includes:

The communication unit 510 is configured to send instruction information to the terminal device, where the instruction information is used to indicate at least one sampling period, wherein, during the at least one sampling period, there is no downlink signal directed to the terminal device.

Optionally, in the embodiment of the present application, the communication unit 510 may be further configured to: receive a request message sent by the terminal device, where the request message is used to request the at least one sampling period.

The number of sampling periods required for the terminal device to sample the uplink signal;

The length of the sampling period required for the terminal device to sample the uplink signal;

The frequency band where the uplink signal is located;

Types of interference that cause self-interference;

The period of the sampling period required for the terminal device to sample the uplink signal.

Optionally, in the embodiment of the present application, the network device 500 may further include: a processing unit 520, configured to determine the number of the at least one sampling period based on an interference type generated from self-interference.

Optionally, in the embodiment of the present application, the network device 500 may further include: a processing unit 520, configured to determine the at least one sample based on a frequency band where the uplink signal is located and/or an interference type that generates self-interference The period and length of the period.

Optionally, in the embodiment of the present application, the terminal device works on multiple frequency bands at the same time.

It should be understood that the network device 500 may correspond to the network device in the method 300, and the corresponding operation of the network device in the method 300 may be implemented. For the sake of brevity, no further description is provided here.

FIG. 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 6, the communication device 600 may further include a memory 620. The processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

Optionally, as shown in FIG. 6, the communication device 600 may further include a transceiver 630, and the processor 1010 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be a terminal device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application. .

Optionally, the communication device 600 may specifically be a network device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. .

7 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 7, the chip 700 may further include a memory 720. The processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiments of the present application.

The memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

Optionally, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiments of the present application.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chips, system chips, chip systems, or system-on-chip chips.

It should be understood that the processor in the embodiments of the present application may be an integrated circuit chip, which has signal processing capabilities. In the implementation process, each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

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

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

FIG. 8 is a schematic block diagram of a communication system 800 provided by an embodiment of the present application. As shown in FIG. 8, the communication system 800 includes a terminal device 810 and a network device 820.

Wherein, the terminal device 810 can be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 820 can be used to implement the corresponding function implemented by the network device in the above method. .

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

Optionally, the computer-readable storage medium may be applied to the terminal device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiments of the present application. No longer.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present application. For brevity, here No longer.

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

Optionally, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. Repeat again.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. Repeat again.

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

Optionally, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the terminal device in each method of the embodiments of the present application. And will not be repeated here.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. And will not be repeated here.

Persons of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians 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.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.

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

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

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

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for sampling signals, characterized in that the method includes:

The terminal device samples an uplink signal that generates self-interference during at least one sampling period, wherein, during the at least one sampling period, there is no downlink signal directed to the terminal device.
The method according to claim 1, wherein the method further comprises:

The terminal device receives indication information sent by the network device, where the indication information is used to indicate the at least one sampling period.
The method according to claim 2, wherein the method further comprises:

The terminal device sends a request message to the network device, where the request message is used to request the at least one sampling period.
The method according to claim 3, wherein the request message includes at least one of the following parameters:

The number of sampling periods required for the terminal device to sample the uplink signal;

The length of the sampling period required for the terminal device to sample the uplink signal;

The frequency band where the uplink signal is located;

Types of interference that cause self-interference;

The period of the sampling period required for the terminal device to sample the uplink signal.
The method according to any one of claims 2 to 4, wherein if the at least one sampling period includes multiple sampling periods, the indication information is further used to indicate each sample in the multiple sampling periods The uplink signals corresponding to the time period, wherein different uplink signals are located in different frequency bands.
The method according to any one of claims 2 to 5, wherein the indication information is further used to indicate the period of the at least one sampling period.
The method according to any one of claims 1 to 6, wherein the number of the at least one sampling period is determined based on the type of interference generated from interference.
The method according to claim 7, wherein when the interference type is a harmonic interference, the at least one sampling period includes a sampling period.
The method according to claim 7, wherein when the interference type is intermodulation interference, the at least one sampling period includes two sampling periods.
The method according to any one of claims 1 to 9, wherein the period and length of the at least one sampling period are determined based on a frequency band where the uplink signal is located and/or an interference type that generates self-interference.
The method according to any one of claims 1 to 10, wherein the terminal device sampling the uplink signal that generates self-interference in at least one sampling period includes:

The terminal device samples the uplink signal in a frequency band where the uplink signal generates self-interference during the at least one sampling period.
The method according to any one of claims 1 to 11, wherein the method further comprises:

The terminal device performs self-interference cancellation based on the uplink signal.
The method according to any one of claims 1 to 12, wherein the terminal device works on multiple frequency bands at the same time.
The method according to any one of claims 1 to 13, wherein the sampling period includes at least one symbol.
A method for sampling signals, characterized in that the method includes:

The network device sends instruction information to the terminal device, where the instruction information is used to indicate at least one sampling period, wherein, during the at least one sampling period, there is no downlink signal directed to the terminal device.
The method of claim 15, wherein the method further comprises:

The network device receives a request message sent by the terminal device, where the request message is used to request the at least one sampling period.
The method according to claim 16, wherein the request message includes at least one of the following parameters:

The number of sampling periods required for the terminal device to sample the uplink signal;

The length of the sampling period required for the terminal device to sample the uplink signal;

The frequency band where the uplink signal is located;

Types of interference that cause self-interference;

The period of the sampling period required for the terminal device to sample the uplink signal.
The method according to any one of claims 15 to 17, wherein if the at least one sampling period includes multiple sampling periods, the indication information is further used to indicate each sample in the multiple sampling periods The uplink signals corresponding to the time period, wherein different uplink signals are located in different frequency bands.
The method according to any one of claims 15 to 18, wherein the indication information is further used to indicate the period of the at least one sampling period.
The method according to any one of claims 15 to 19, wherein the method further comprises:

The network device determines the number of the at least one sampling period based on the type of interference generated from interference.
The method according to claim 20, wherein when the interference type is a harmonic interference, the at least one sampling period includes a sampling period.
The method according to claim 20, wherein when the interference type is intermodulation interference, the at least one sampling period includes two sampling periods.
The method according to any one of claims 15 to 22, wherein the method further comprises:

The network device determines the period and length of the at least one sampling period based on the frequency band where the uplink signal is located and/or the type of interference generated from interference.
The method according to any one of claims 15 to 23, wherein the terminal device operates in multiple frequency bands simultaneously.
The method according to any one of claims 15 to 14, wherein the sampling period includes at least one symbol.
A terminal device is characterized by comprising:

The processing unit is configured to sample an uplink signal that generates self-interference in at least one sampling period, wherein, in the at least one sampling period, there is no downlink signal directed to the terminal device.
The terminal device according to claim 26, wherein the terminal device further comprises:

The communication unit is configured to receive indication information sent by the network device, and the indication information is used to indicate the at least one sampling period.
The terminal device according to claim 28, wherein the communication unit is further configured to:

Sending a request message to the network device, where the request message is used to request the at least one sampling period.
The terminal device according to claim 28, wherein the request message includes at least one of the following parameters:

The number of sampling periods required for the terminal device to sample the uplink signal;

The length of the sampling period required for the terminal device to sample the uplink signal;

The frequency band where the uplink signal is located;

Types of interference that cause self-interference;

The period of the sampling period required for the terminal device to sample the uplink signal.
The terminal device according to any one of claims 27 to 28, wherein if the at least one sampling period includes multiple sampling periods, the indication information is further used to indicate each of the multiple sampling periods The uplink signals corresponding to the sampling period, where different uplink signals are located in different frequency bands.
The terminal device according to any one of claims 27 to 30, wherein the indication information is further used to indicate the period of the at least one sampling period.
The terminal device according to any one of claims 26 to 31, wherein the number of the at least one sampling period is determined based on an interference type that generates self-interference.
The terminal device according to claim 32, wherein when the interference type is a harmonic interference, the at least one sampling period includes a sampling period.
The terminal device according to claim 32, wherein when the interference type is intermodulation-type interference, the at least one sampling period includes two sampling periods.
The terminal device according to any one of claims 26 to 34, wherein the period and length of the at least one sampling period are determined based on a frequency band where the uplink signal is located and/or an interference type that generates self-interference .
The terminal device according to any one of claims 26 to 35, wherein the processing unit is specifically configured to:

In the at least one sampling period, the uplink signal is sampled in a frequency band where the uplink signal generates self-interference.
The terminal device according to any one of claims 26 to 36, wherein the processing unit is further configured to:

Based on the uplink signal, self-interference cancellation is performed.
The terminal device according to any one of claims 26 to 37, wherein the terminal device works on multiple frequency bands at the same time.
The terminal device according to any one of claims 26 to 38, wherein the sampling period includes at least one symbol.
A network device, characterized in that it includes:

The communication unit is configured to send instruction information to the terminal device, where the instruction information is used to indicate at least one sampling period, wherein, within the at least one sampling period, there is no downlink signal directed to the terminal device.
The network device according to claim 40, wherein the communication unit is further configured to:

Receiving a request message sent by the terminal device, where the request message is used to request the at least one sampling period.
The network device according to claim 41, wherein the request message includes at least one of the following parameters:

The number of sampling periods required for the terminal device to sample the uplink signal;

The length of the sampling period required for the terminal device to sample the uplink signal;

The frequency band where the uplink signal is located;

Types of interference that cause self-interference;

The period of the sampling period required for the terminal device to sample the uplink signal.
The network device according to any one of claims 40 to 42, wherein if the at least one sampling period includes multiple sampling periods, the indication information is further used to indicate each of the multiple sampling periods The uplink signals corresponding to the sampling period, where different uplink signals are located in different frequency bands.
The network device according to any one of claims 40 to 43, wherein the indication information is further used to indicate the period of the at least one sampling period.
The network device according to any one of claims 40 to 44, wherein the network device further comprises:

The processing unit is configured to determine the number of the at least one sampling period based on the type of interference generated from interference.
The network device according to claim 45, wherein when the interference type is harmonic interference, the at least one sampling period includes a sampling period.
The network device according to claim 45, wherein when the interference type is intermodulation interference, the at least one sampling period includes two sampling periods.
The network device according to any one of claims 40 to 47, wherein the network device further comprises:

The processing unit is configured to determine the period and length of the at least one sampling period based on the frequency band where the uplink signal is located and/or the type of interference generated from interference.
The network device according to any one of claims 40 to 48, wherein the terminal device works on multiple frequency bands simultaneously.
The network device according to any one of claims 40 to 49, wherein the sampling period includes at least one symbol.
A terminal device, characterized by comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute as claimed in claims 1 to 14 The method of any one.
A network device, characterized by comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute as claimed in claims 15 to 25 The method of any one.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 14.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 15 to 25.
A computer-readable storage medium, characterized by being used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 14.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 15 to 25.
A computer program product, characterized in that it includes computer program instructions, which cause the computer to execute the method according to any one of claims 1 to 14.
A computer program product, characterized in that it includes computer program instructions, which cause the computer to execute the method according to any one of claims 15 to 25.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1 to 14.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 15 to 25.