CN112585875B

CN112585875B - Method for sampling signal, terminal equipment and network equipment

Info

Publication number: CN112585875B
Application number: CN201880096791.9A
Authority: CN
Inventors: 张治�
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2022-03-22
Anticipated expiration: 2038-12-28
Also published as: CN112585875A; WO2020133213A1

Abstract

The embodiments of the present application relate to a method for sampling a signal, a terminal device, and a network device. The method includes: the terminal device samples an uplink signal generated by self-interference in at least one sampling period, wherein, in the at least one sampling period, There is no downlink signal for the terminal device. The method for sampling a signal, the terminal device, and the network device according to the embodiments of the present application can collect clean uplink signals that generate self-interference.

Description

Method for sampling signal, terminal equipment and network equipment

Technical Field

The present application relates to the field of communications, and in particular, to a method for sampling a signal, a terminal device, and a network device.

Background

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

When self-interference is generated inside the terminal device, how to sample the uplink signal generating the self-interference is not specified at present.

Disclosure of Invention

The embodiment of the application provides a method for sampling a signal, terminal equipment and network equipment, which can acquire a clean uplink signal generating self-interference.

In a first aspect, a method for sampling a signal is provided, the method comprising:

the terminal device samples an uplink signal generating self-interference in at least one sampling period, wherein in the at least one sampling period, no downlink signal aiming at the terminal device exists.

In a second aspect, a method of sampling a signal is provided, the method comprising:

the network equipment sends indication information to the terminal equipment, wherein the indication information is used for indicating at least one sampling period, and downlink information specific to the terminal equipment does not exist in the at least one sampling period.

In a third aspect, a terminal device is provided, configured to perform the method in the first aspect or each implementation manner thereof.

Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In a fourth aspect, a network device is provided for performing the method of the second aspect or its implementation manners.

In particular, the network device comprises functional modules for performing the methods of the second aspect or its implementations described above.

In a fifth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.

In a sixth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.

In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or its implementation manners.

Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method in any one of the first aspect to the second aspect or the implementation manners thereof.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to second aspects or implementations thereof.

A tenth aspect provides a computer program that, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

According to the technical scheme, the terminal equipment can sample the uplink signal generating the self-interference in at least one sampling period, and the downlink signal aiming at the terminal equipment does not exist in the sampling period, so that the clean uplink signal generating the self-interference can be sampled.

Drawings

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

Fig. 2 is a schematic flow chart of a method for sampling a signal according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of another method for sampling a signal provided according to an embodiment of the present application.

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

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

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

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

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

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application can be applied to various communication systems, such as: global System for Mobile communications (GSM) System, Code Division Multiple Access (CDMA) System, Wideband Code Division Multiple Access (WCDMA) System, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) System, LTE-a System, New Radio (NR) System, Evolution System of NR System, LTE-a System over unlicensed spectrum, NR (NR-b) System, UMTS (Universal Mobile telecommunications System), UMTS (UMTS) System, WLAN-b System over unlicensed spectrum, WiFi-b System, Wireless Local Area Network (WLAN) System, Wireless Local Area network (WiFi) System, GPRS (General Packet Radio Service, GPRS) System, GPRS (GPRS) System, LTE-b System, LTE-a System, NR System, LTE-b System over unlicensed spectrum, and LTE-b System over unlicensed spectrum, Next generation communication systems or other communication systems, etc.

Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technology, mobile Communication systems will support not only conventional Communication, but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

The frequency spectrum of the application is not limited in the embodiment of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum and may also be applied to an unlicensed spectrum.

Illustratively, a 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, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over 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, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

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

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. 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 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

When a terminal device operates on two or more carriers in different frequency bands at the same time, uplink signals of the carriers may interfere with downlink received signals of some carriers. Assuming that carrier F1 operates in the low band and carrier F2 operates in the high band, three different types of mutual interference may exist:

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

The carrier F3 in the above description may be one of the carriers F1 or F2, or may be another carrier different from the carrier F1 or F2 (in this case, the terminal device may operate on more than two carriers at the same time). For example, the terminal device configures LTE carriers and NR carriers of bandwidth (Band)1 and Band 7 at the same time (3400 + 3800MHz), and if the uplink carrier of Band 7 and the uplink carrier of NR are transmitted at the same time, the 5 th order intermodulation effect generated by the uplink carrier of Band 7 may affect the sensitivity of the downlink receiver of bandwidth 1.

2. The frequency multiplication of the upstream carrier of F1 overlaps or partially overlaps the frequency of the downstream signal of F2, and thus carrier F1 constitutes Harmonic (Harmonic) interference to F2.

For example: the frequency Band of the uplink carrier of the LTE Band 3 is 1710-1785MHz, and the 2-order harmonic range is 3420-3570 MHz. If the terminal device performs LTE uplink transmission on Band 3 and downlink reception on NR 3400-3800MHz at the same time, the 2 nd order harmonic may interfere with the sensitivity of the NR downlink receiver.

3. The frequency multiplication of the downstream carrier of F1 overlaps or partially overlaps with the upstream signal band of F2 (and its adjacent bands), so that the carrier F2 constitutes Harmonic intermodulation (Harmonic Mixing) interference to F1.

For example: the frequency Band of the downlink carrier of the LTE Band 3 is 1805-1880MHz, and the 2-order harmonic range thereof is 3610-3760 MHz. Then if the terminal device performs LTE downlink reception on band 3 and performs uplink transmission on NR 3400-.

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

In the process of self-interference elimination by the terminal equipment, it is more critical how to sample the uplink signal generating self-interference. In view of this, an embodiment of the present application provides a method for sampling a signal, which can acquire a clean uplink signal generating self-interference when a terminal device generates self-interference.

Fig. 2 is a schematic flow chart diagram of a communication method 200 according to an embodiment of the present application. The method 200 may be performed by a terminal device and may include at least some of the following.

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

Fig. 3 is a schematic flow chart diagram 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 some of the following.

In 310, the network device sends indication information to the terminal device, the indication information indicating at least one sampling period.

Wherein, in the at least one sampling period, there is no downlink signal for the terminal device.

The communication method of the embodiment of the present application will be further described below with reference to fig. 2 and 3. It is to be understood that what is described below applies to both method 200 and method 300. In the embodiment, the angle is described from the side of the terminal device, and it can be understood that the terminal device receives from the network device, which means that the network device transmits.

It should also be understood that the self-interference of the terminal device is not specifically limited in the embodiments of the present application. For example, in some embodiments of the present application, the self-interference signals may be classified into three categories according to their sources.

Therein, the first type of self-interference signal may be a harmonic or intermodulation interference generated by one or several transmit signals of the communication system. For example, it may be a harmonic or intermodulation interference generated by one or several transmission signals of the cellular communication system.

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

The third type of self-interference signal is mainly due to electromagnetic waves generated by some active electronics inside the terminal device. For example, electromagnetic waves generated by electronic devices such as a display screen of the terminal device, a memory reading device of the terminal device, a camera of the terminal device, and an electric motor. The frequency range of the electromagnetic wave can be dozens of MHz to hundreds of MHz, and when the harmonic wave falls on the cellular frequency band or the harmonic wave and the transmitting signal of the cellular frequency band are mutually modulated, the electromagnetic wave can generate interference to the receiving of the cellular frequency band.

In this embodiment, when the terminal device samples the uplink signal generating the self-interference in at least one sampling period, the terminal device may sample the uplink signal generating at least one of the first self-interference signal, the second self-interference signal, and the third self-interference signal.

For example, the terminal device may sample an uplink signal generating a first type of self-interference for at least one sampling period.

In the embodiment of the application, the terminal device can simultaneously work on a plurality of frequency bands. For example, the terminal device may operate in both the high band and the low band.

In this embodiment of the present application, in a sampling period, the absence of a downlink signal for the terminal device may be understood as: during the sampling period, only the uplink signal for the terminal device (referred to as a first terminal device for convenience of description) exists; or, only an uplink signal for the first terminal device and a signal of a second terminal device (an uplink signal and/or a downlink signal of the second terminal device) exist, where the second terminal device is a terminal device other than the first terminal device.

It should be noted that the above references to "first" and "second" are merely used to distinguish 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. Alternatively, the time unit may be a subframe, a slot, a symbol, or a Short Transmission Timing Interval (sTTI). For example, the sampling period may include at least one symbol.

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

Optionally, the parameter of the sampling period may include, but is not limited to, at least one of: the number of sampling periods, the length of the sampling periods, the period of the sampling periods. It should be understood that the period of the sampling period mentioned herein may be understood as a period in which the terminal device samples the uplink signal generating self-interference.

Generally, when a terminal device operates in DC or CA mode, the terminal device may be subjected to harmonic-like interference, intermodulation-like interference, or both. In each interference type, the terminal device may also be subject to interference of a different order. For example, harmonic-like interference can be classified into 2 nd harmonic, 3 rd harmonic, 4 th harmonic, and the like. For the intermodulation interference, 2-order intermodulation, 3-order intermodulation, 4-order intermodulation, etc. can be classified.

Assuming that the frequency band combination of the two uplink signals of the terminal device is (f1, f2), the harmonic interference of f1 may occur at 2 × f1, 3 × f1, 4 × f1.. The secondary intermodulation interference of (f1, f2) may occur on the secondary band combination of (f1, f2), and specifically, for secondary intermodulation, the interference may occur on the band combination of (f1, f 2); for three-fold intermodulation, interference may occur on the two pairs of frequency band combinations of (2 f1, f2) and (f1, 2 f 2); for four intermodulation events, interference can occur on the three pairs of frequency band combinations (2 f1, 2 f2), (3 f1, f2), (f1, 3 f 2); for five intermodulation events, interference can occur on the four pairs of band combinations (3 f1, 2 f2), (2 f1, 3 f2), (f1, 4 f2), (4 f1, f 2). Other higher order intermodulation and so on.

Regarding the number of sampling periods, as an example, the number of sampling periods may be related to the type of interference generating the self-interference, i.e., the number of sampling periods may be determined based on the type of interference generating the self-interference.

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

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

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

It should be understood that, for the harmonic interference, the self-interference is generated from a certain path of uplink signal, so when the terminal device samples the uplink signal generating the harmonic interference, in one cycle, one sampling period is required. For intermodulation interference, self-interference is generated from two uplink signals, and the terminal device may need two sampling periods, in which the terminal device samples two uplink signals respectively.

As another example, the number of sampling periods may relate to a method by which the terminal device samples the uplink signal that produces self-interference.

Taking intermodulation interference as an example, if the terminal device only samples an interference source signal (i.e., an original uplink signal), the terminal device may sample in two sampling periods, that is, the terminal device samples two paths of uplink signals once each; if the terminal device samples each harmonic component of the interferer signal, the terminal device may sample in more than two sampling periods. For example, if a terminal device is simultaneously subjected to 2 and 3 times intermodulation interference for one band combination, the terminal device may require 3 sampling periods.

It should be noted that the description in the foregoing regarding determining the number of sampling periods required by the terminal device to sample the uplink signal generating self-interference is merely an example, and does not limit the scope of the embodiments of the present application. The number of sampling periods required by the terminal device may depend on the frequency band or combination of frequency bands constituting the self-interference. For example, assuming that the frequency band combination of the two uplink signals is (f1, f2), if (2 × f1, f2) constitutes intermodulation interference, the terminal device may sample signals on the 2 × f1 and f2 frequency bands in two sampling periods respectively; if 2 f1 constitutes harmonic interference, (2 f1, f2) constitutes intermodulation interference, the terminal device may sample signals on the 2 f1 and f2 frequency bands, respectively, in two sampling periods; if 2 f1 constitutes harmonic interference, (f1, 2 f2) constitutes intermodulation interference, the terminal device may sample signals on the 2 f1, f2 and 2 f2 frequency bands, respectively, in three sampling periods.

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

For example, the length of the sampling period required for terminal device 1 may be 1 symbol, the length of the sampling period required for terminal device 2 may be 2 symbols, and the length of the sampling period required for 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). Illustratively, the length of the sampling period may be different for different subcarrier spacings. For example, when the subcarrier spacing is 15KHz, the length of the sampling period is 1 symbol; when the subcarrier spacing 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 in which the uplink signal is located. For example, the lengths of the sampling periods corresponding to the frequency bands in which different uplink 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 the self-interference. Illustratively, the length of the sampling period corresponding to the intermodulation interference may be 1 symbol, and the length of the sampling period corresponding to the harmonic interference may be 2 symbols.

For example, the terminal device or the network device may determine the period and the length of the sampling period based on the frequency band in which the uplink signal is located and/or the interference type generating self-interference.

It should be understood that the term "and/or" in the above description is only one type of association relationship describing an associated object, and means that three types of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone.

Regarding the period of the sampling period, as an example, the period of the sampling period required for different terminal devices may be different. For example, the period of the sampling period required by the terminal device 1 may be 10ms, 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 relate to a frequency band in which an uplink signal generating self-interference is located. The frequency bands of the uplink signals are different, and the periods of the sampling time periods can be different.

As another example, the period of the sampling period may be related to the type of interference. The interference types are different and the periods of the sampling periods may be different.

In this embodiment of the present application, the terminal device may first obtain at least one sampling period, and then sample the uplink signal generating the self-interference after obtaining the at least one sampling period.

The embodiments of the present application provide three ways for a terminal device to obtain at least one sampling period, which are described in detail below.

Mode 1

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

Alternatively, the at least one sampling period may be a protocol specification, preset on the terminal device.

Mode 2

The terminal device acquiring the at least one sampling period may include: the terminal equipment receives indication information sent by the network equipment, wherein the indication information is used for indicating at least one sampling period. Thus, the terminal device can acquire at least one sampling period.

Optionally, if the at least one sampling period includes a plurality of sampling periods, the indication information may be further used to indicate an uplink signal corresponding to each of the plurality of sampling periods. Wherein, the frequency bands of different uplink signals are different.

For example, two uplink signals S1 and S2 may generate intermodulation to the terminal device, where 2 sampling periods configured by the network device to the terminal device are T1 and T2, and the network device may further indicate to the terminal device that at T1, only the uplink signal S1 is available, and no received signal and the uplink signal S2; at T2, there is only S2, and no received signal sum S1, i.e., T1 for S1 and T2 for S2. Thus, the terminal device may sample S1 at T1 and S2 at T2.

Optionally, the indication information may also be used to indicate a frequency band or a combination of frequency bands in which self-interference is generated.

For example, the two uplink signals S1 and S2 generate intermodulation for the terminal device to receive, where the frequency band generated By S1 self-interference is Bx, and the frequency band generated By S2 self-interference is By, the network device may indicate (S1, S2) the corresponding frequency band combination (Bx, By) to the terminal device.

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

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

In one example, the network device may periodically indicate to the terminal device a periodicity of the at least one sampling period. In this way, the self-interference cancellation algorithm may periodically update various parameters, so that the self-interference cancellation effect may be ensured.

In the mode 2, the network device may actively send the indication information to the terminal device, or may send the indication 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 of the embodiment of the application may further include: the terminal device sends a request message to the network device, the request message requesting 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 the indication information.

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

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

Further illustratively, if the request message includes that the type of interference generating the self-interference is harmonic interference and the length of the sampling period required by the terminal device to sample the uplink signal is 2 symbols, the network device may configure 1 sampling period with a length of 2 symbols to the terminal device after receiving the request message.

Optionally, at this time, the request message may also include lengths of sampling periods corresponding to different subcarrier intervals.

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

In one 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 default values.

For example, if the number of sampling periods required for the terminal device to sample the uplink signal is not included in the request message, the network device may indicate the number of sampling periods to the terminal device according to a default value of the number of sampling periods.

Alternatively, 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 in which the uplink signal generates interference.

For example, if 1 kind of harmonic interference is combined in one frequency band, the number of default sampling periods is 1; if one frequency band is combined with 1 type of intermodulation interference, the number of default sampling time periods is 2; if a frequency band is combined with 1 medium harmonic interference and 1 intermodulation interference, the number of default sampling periods is 3.

As another example, if the length of the sampling period required for the terminal device to sample the uplink signal is not included in the request message, the network device may indicate the length of the sampling period to the terminal device according to a default value of the length of the sampling period.

Optionally, each subcarrier interval may have a length of a default sampling period, and different frequency bands or frequency band combinations may have different lengths of default sampling periods, so that the network device may indicate the length of the sampling period to the terminal device based on the subcarrier interval and/or the length of the default sampling period corresponding to the frequency band.

Further illustratively, if the period of the sampling period required for the terminal device to sample the uplink signal is not included in the request message, the network device may indicate the period of the sampling period to the terminal device according to a 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.

Alternatively, different frequency bands or frequency band combinations may have different periods of the default sampling period, and the network device may indicate the period of the sampling period to the terminal device based on the frequency band or frequency band combination in which the uplink signal generates interference.

Mode 3

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

For example, 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 obtained based on the indication information sent by the network device may be the number and the cycle of the sampling periods.

It should be understood that, for a specific implementation manner of the manner 3, reference may be made to the description of the first two manners, and here, for brevity of the content, detailed description is not repeated.

It should be noted that, the above 3 implementation manners of the terminal device obtaining at least one sampling period are merely examples, and do not constitute a limitation to the embodiments of the present application. That is to say, in the embodiment of the present application, the terminal device may further acquire at least one sampling period based on other manners besides the 3 manners mentioned above.

After the terminal device obtains the at least one sampling period, the terminal device may sample the uplink signal generating the self-interference in the at least one sampling period. The sampling, by the terminal device, of the uplink signal generating self-interference in at least one sampling period may include: and the terminal equipment samples the uplink signal on the frequency band where the uplink signal generates interference in at least one sampling period.

For example, assuming that the frequency band combination of the two uplink signals is (f1, f2), when the terminal device samples the harmonic-like signal generating self-interference, only the components forming the harmonic may be sampled. For example, the 2 nd harmonic of the uplink signal with the frequency band f1 generates self-interference, and the terminal device may sample on the frequency band 2 × f1.

When the terminal device samples the intermodulation signals generating self-interference, each frequency band component forming intermodulation can be sampled respectively. For example, if (2 × f1, f2) constitutes intermodulation interference, the terminal device may sample on the 2 × f1 and f2 frequency bands, respectively, in two sampling periods. 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, respectively, in two sampling periods. If 2 × f1 constitutes harmonic interference and (f1, 2 × f2) constitutes intermodulation interference, the terminal device may sample the 2 × f1, f2 and 2 × f2 frequency bands in three sampling periods, respectively.

After the terminal device samples an uplink signal generating self-interference, the method of the embodiment of the present application may further include: and the terminal equipment carries out self-interference elimination based on the sampled uplink signal.

The basic principle of the terminal equipment for self-interference elimination is as follows: the terminal equipment couples out a part of the uplink signal generating self-interference to be used as a reference signal, then applies corresponding gain, delay and phase adjustment to the reference signal to construct a cancellation signal with the same power and the opposite phase as the actual self-interference signal, and finally realizes the cancellation of the destructive interference of the self-interference signal at a receiving end. That is, the essence of the terminal device performing self-interference cancellation is to implement a self-interference reconstruction model inside the terminal device.

The self-interference cancellation technology of the terminal device can be divided into digital and analog. For the analog self-interference elimination technology, a radio frequency signal transmitted by a terminal side is directly sampled, an interference signal is reconstructed through the sampled signal, and then the interference signal is eliminated at a radio frequency front end. For digital self-interference cancellation techniques, the uplink signal is sampled by the baseband signal, the interference signal is reconstructed at baseband and then cancelled at baseband.

According to the embodiment of the application, the terminal equipment can sample the uplink signal generating the self-interference in at least one sampling period, and the downlink signal aiming at the terminal equipment does not exist in the sampling period, so that the clean uplink signal generating the self-interference can be sampled.

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

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

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

Fig. 4 shows a schematic block diagram of a terminal device 400 of an embodiment of the application. As shown in fig. 4, the terminal apparatus 400 includes:

a processing unit 410, configured to sample an uplink signal generating self-interference in at least one sampling period, where in the at least one sampling period, there is no downlink signal for the terminal device.

Optionally, in this 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 this embodiment of the present application, the communication unit 420 may be further configured to: sending a request message to the network device, the request message requesting the at least one sampling period.

Optionally, in this 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 a sampling period required for the terminal device 400 to sample the uplink signal;

a frequency band in which the uplink signal is located;

an interference type that generates self-interference;

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

Optionally, in this embodiment of the 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 frequency bands of different uplink signals are different.

Optionally, in this embodiment of the present application, the indication information is further used for indicating a period of the at least one sampling period.

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

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

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

Optionally, in this embodiment of the application, the period and the length of the at least one sampling period are determined based on a frequency band in which the uplink signal is located and/or an interference type that generates self-interference.

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

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

Optionally, in this embodiment of the present application, the terminal device 400 operates on multiple frequency bands simultaneously.

Optionally, in an 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 corresponding operations of the terminal device in the method 400 may be implemented, which are not described herein again for brevity.

Fig. 5 shows a schematic block diagram of a network device 500 of an embodiment of the application. As shown in fig. 5, the network device 500 includes:

a communication unit 510, configured to send indication information to a terminal device, where the indication information is used to indicate at least one sampling period, where a downlink signal for the terminal device does not exist in the at least one sampling period.

Optionally, in this embodiment of the present application, the communication unit 510 may further be configured to: and receiving a request message sent by the terminal equipment, wherein the request message is used for requesting the at least one sampling period.

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

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

a frequency band in which the uplink signal is located;

an interference type that generates self-interference;

and the terminal equipment samples the period of the sampling time period required by the uplink signal.

Optionally, in this 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 that generates self-interference.

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

Optionally, in this embodiment of the present application, the terminal device operates in multiple frequency bands simultaneously.

It should be understood that the network device 500 may correspond to the network device in the method 300, and the corresponding operations of the network device in the method 300 may be implemented, which are not described herein for brevity.

Fig. 6 is a schematic structural diagram of a communication device 600 according to 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 a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 6, the communication device 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 620 may be a separate device from the processor 610, or may be integrated into 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, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.

Optionally, the communication device 600 may specifically be a terminal device in the embodiment of the present application, and the communication device 600 may implement a corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 600 may specifically be a network device in the embodiment of the present application, and the communication device 600 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Fig. 7 is a schematic structural diagram of a chip of 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 a 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. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

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

Optionally, the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

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

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A 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 connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. 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 (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 8 is a schematic block diagram of a communication system 800 provided in 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.

The terminal device 810 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 820 may be configured to implement the corresponding function implemented by the network device in the foregoing method, which is not described herein again for brevity.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of sampling a signal, the method comprising:

the method comprises the steps that terminal equipment receives indication information sent by network equipment, wherein the indication information is used for indicating at least one sampling period;

and the terminal device samples the uplink signal generating self-interference in the at least one sampling period, wherein in the at least one sampling period, the downlink signal aiming at the terminal device does not exist.

2. The method of claim 1, further comprising:

the terminal device sends a request message to the network device, wherein the request message is used for requesting the at least one sampling period.

3. The method of claim 2, wherein the request message comprises at least one of the following parameters:

a frequency band in which the uplink signal is located;

an interference type that generates self-interference;

4. The method according to claim 1, wherein if the at least one sampling period includes a plurality of sampling periods, the indication information is further used to indicate an uplink signal corresponding to each of the plurality of sampling periods, where different uplink signals are located in different frequency bands.

5. The method of claim 1, wherein the indication information is further used for indicating a period of the at least one sampling period.

6. The method of claim 1, wherein the number of the at least one sampling period is determined based on a type of interference that generates self-interference.

7. The method of claim 6, wherein the at least one sampling period comprises one sampling period when the interference type is harmonic-like interference.

8. The method of claim 6, wherein the at least one sampling period comprises two sampling periods when the interference type is intermodulation-type interference.

9. The method of claim 1, wherein a period and a length of the at least one sampling period are determined based on a frequency band in which the uplink signal is located and/or an interference type generating self-interference.

10. The method of any one of claims 1 to 9, wherein the sampling, by the terminal device, of the uplink signal generating self-interference in at least one sampling period comprises:

and the terminal equipment samples the uplink signal on a frequency band where the uplink signal generates self-interference in the at least one sampling period.

11. The method according to any one of claims 1 to 9, further comprising:

and the terminal equipment carries out self-interference elimination based on the uplink signal.

12. The method according to any of claims 1 to 9, wherein the terminal device operates on multiple frequency bands simultaneously.

13. The method of any one of claims 1 to 9, wherein the sampling period comprises at least one symbol.

14. A method of sampling a signal, the method comprising:

the method comprises the steps that a network device sends indication information to a terminal device, wherein the indication information is used for indicating at least one sampling period, the at least one sampling period is used for the terminal device to sample an uplink signal generating self-interference in the at least one sampling period, and in the at least one sampling period, a downlink signal aiming at the terminal device does not exist.

15. The method of claim 14, further comprising:

and the network equipment receives a request message sent by the terminal equipment, wherein the request message is used for requesting the at least one sampling period.

16. The method of claim 15, wherein the request message comprises at least one of the following parameters:

a frequency band in which the uplink signal is located;

an interference type that generates self-interference;

17. The method according to claim 14, wherein if the at least one sampling period includes a plurality of sampling periods, the indication information is further used to indicate an uplink signal corresponding to each of the plurality of sampling periods, where different uplink signals are located in different frequency bands.

18. The method of claim 14, wherein the indication information is further used for indicating a period of the at least one sampling period.

19. The method of claim 14, further comprising:

the network device determines a number of the at least one sampling period based on a type of interference that generates self-interference.

20. The method of claim 19, wherein the at least one sampling period comprises one sampling period when the interference type is harmonic-like interference.

21. The method of claim 19, wherein the at least one sampling period comprises two sampling periods when the interference type is intermodulation-type interference.

22. The method of claim 14, further comprising:

and the network equipment determines the period and the length of the at least one sampling period based on the frequency band of the uplink signal and/or the interference type generating self-interference.

23. The method according to any of claims 14 to 22, wherein the terminal device operates on multiple frequency bands simultaneously.

24. The method of any one of claims 14 to 22, wherein the sampling period comprises at least one symbol.

25. A terminal device, comprising:

the communication unit is used for receiving indication information sent by network equipment, and the indication information is used for indicating at least one sampling period;

a processing unit, configured to sample, in the at least one sampling period, an uplink signal generating self-interference, where, in the at least one sampling period, there is no downlink signal for the terminal device.

26. The terminal device of claim 25, wherein the communication unit is further configured to:

sending a request message to the network device, the request message requesting the at least one sampling period.

27. The terminal device of claim 26, wherein the request message comprises at least one of the following parameters:

a frequency band in which the uplink signal is located;

an interference type that generates self-interference;

28. The terminal device of claim 25, wherein 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 of the multiple sampling periods, where different uplink signals are located in different frequency bands.

29. The terminal device of claim 25, wherein the indication information is further used for indicating a period of the at least one sampling period.

30. The terminal device of claim 25, wherein the number of the at least one sampling period is determined based on a type of interference that generates self-interference.

31. The terminal device of claim 30, wherein the at least one sampling period comprises one sampling period when the interference type is harmonic-like interference.

32. The terminal device of claim 30, wherein the at least one sampling period comprises two sampling periods when the interference type is intermodulation-type interference.

33. The terminal device of claim 25, wherein a period and a length of the at least one sampling period are determined based on a frequency band in which the uplink signal is located and/or an interference type generating self-interference.

34. The terminal device according to any one of claims 25 to 33, wherein the processing unit is specifically configured to:

and sampling the uplink signal on a frequency band where the uplink signal generates self-interference in the at least one sampling period.

35. The terminal device of any of claims 25 to 33, wherein the processing unit is further configured to:

and performing self-interference elimination based on the uplink signal.

36. The terminal device according to any of claims 25 to 33, wherein the terminal device operates on multiple frequency bands simultaneously.

37. The terminal device of any of claims 25-33, wherein the sampling period comprises at least one symbol.

38. A network device, comprising:

the communication unit is used for sending indication information to a terminal device, wherein the indication information is used for indicating at least one sampling period, the at least one sampling period is used for the terminal device to sample an uplink signal generating self-interference in the at least one sampling period, and in the at least one sampling period, a downlink signal aiming at the terminal device does not exist.

39. The network device of claim 38, wherein the communication unit is further configured to:

and receiving a request message sent by the terminal equipment, wherein the request message is used for requesting the at least one sampling period.

40. The network device of claim 39, wherein the request message comprises at least one of the following parameters:

a frequency band in which the uplink signal is located;

an interference type that generates self-interference;

41. The network device of claim 38, wherein if the at least one sampling period comprises a plurality of sampling periods, the indication information is further used to indicate an uplink signal corresponding to each of the plurality of sampling periods, where different uplink signals are located in different frequency bands.

42. The network device of claim 38, wherein the indication information is further configured to indicate a period of the at least one sampling period.

43. The network device of claim 38, wherein the network device further comprises:

a processing unit to determine a number of the at least one sampling period based on a type of interference that generates self-interference.

44. The network device of claim 43, wherein the at least one sampling period comprises one sampling period when the interference type is harmonic-like interference.

45. The network device of claim 43, wherein the at least one sampling period comprises two sampling periods when the interference type is intermodulation-type interference.

46. The network device of claim 38, wherein the network device further comprises:

and the processing unit is used for determining the period and the length of the at least one sampling period based on the frequency band of the uplink signal and/or the interference type generating self-interference.

47. The network device of any one of claims 38 to 46, wherein the terminal device operates in multiple frequency bands simultaneously.

48. The network device of any one of claims 38 to 46, wherein the sampling period comprises at least one symbol.

49. A terminal device, comprising: a processor and a memory, the memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 1 to 13.

50. A network device, comprising: a processor and a memory, the memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 14 to 24.

51. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 13.

52. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 14 to 24.

53. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 13.

54. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 14 to 24.