Interference determination method and apparatus

Abstract

An embodiment of the present application discloses an interference determination method and an apparatus thereof. The method includes a step of a network device receiving from a terminal device first channel quality information corresponding to a first bandwidth and second channel quality information corresponding to an aggregated bandwidth, a step of determining interference received by the terminal device when the terminal device accesses the aggregated bandwidth based on the first channel quality information and the second channel quality information, and a step of sending bandwidth setting information to the terminal device based on the interference. The first channel quality information is sent by the terminal device when the terminal device accesses the first bandwidth, and the second channel quality information is sent by the terminal device when the terminal device accesses the aggregated bandwidth. The aggregated bandwidth is obtained by aggregating at least the first bandwidth and the second bandwidth, and a spectrum of a third bandwidth is interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth. The embodiment of the present application helps to prevent the terminal device from operating in a bandwidth with strong interference, and helps to improve the performance of the terminal device.

Description

[Technical Field]

[0001] The present application relates to the field of communication technology, and in particular to an interference determination method and apparatus thereof. [Background technology]

[0003] To fully utilize the discrete spectrum resources, solutions have been proposed that aggregate multiple discrete spectrum fragments into high-bandwidth cells, where users can enjoy high bandwidth through non-contiguous scheduling.

[0004] A filter in a terminal device can filter out interference from outside a continuous spectrum. However, for a high bandwidth obtained by aggregating multiple discrete spectrum fragments, the filter cannot filter out interference from another spectrum between the discrete spectrum fragments because the high bandwidth obtained by aggregating multiple discrete spectrum fragments is used as one single carrier in current discrete spectrum solutions. In addition, this interference cannot be quantified. Therefore, a terminal device may operate with strong interference, and the performance of the terminal device will be affected. Summary of the Invention

[0005] The embodiments of the present application provide an interference determination method and apparatus for determining interference received by a terminal device when the terminal device accesses an aggregated bandwidth, and sending bandwidth setting information to the terminal device based on the interference, which helps to prevent the terminal device from operating in a bandwidth with strong interference, and helps to improve the performance of the terminal device.

[0006] According to a first aspect, an embodiment of the present application provides an interference determination method, which may be implemented by a network device or a chip used in the network device. The method includes the steps of: receiving, by the network device, first channel quality information corresponding to a first bandwidth from a terminal device, the first channel quality information being sent by the terminal device when the terminal device accesses the first bandwidth; receiving, by the network device, second channel quality information corresponding to an aggregated bandwidth from the terminal device, the second channel quality information being sent by the terminal device when the terminal device accesses the aggregated bandwidth, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and a second bandwidth, where a spectrum of a third bandwidth intervenes between the spectrum of the first bandwidth and the spectrum of the second bandwidth; determining, by the network device, interference received by the terminal device when the terminal device accesses the aggregated bandwidth based on the first channel quality information and the second channel quality information; and sending, by the network device, bandwidth setting information to the terminal device based on the interference.

[0007] In this technical solution, the interference received by the terminal device when the terminal device accesses the aggregated bandwidth is determined based on the first channel quality information and the second channel quality information, and thus the interference can be quantified. In addition, this helps the terminal device to adaptively adjust whether to operate in a high bandwidth or a low bandwidth based on the interference. This helps the terminal device to operate in an operating bandwidth with low interference, i.e., helps to prevent the terminal device from operating in a bandwidth with strong interference, and helps to improve the performance of the terminal device.

[0008] In implementation, if the interference value of the interference is greater than the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the first bandwidth.

[0009] This technical solution helps the terminal device to operate in a first bandwidth with low interference, and helps to improve the performance of the terminal device.

[0010] In implementation, if the interference value of the interference is equal to or less than the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the aggregate bandwidth.

[0011] In this technical solution, when the interference is low, the device operates in the aggregated bandwidth, which helps to obtain high bandwidth services.

[0012] In an implementation, a specific implementation in which a network device determines, based on the first channel quality information and the second channel quality information, the interference received by a terminal device when the terminal device accesses the aggregated bandwidth may be to determine a ratio of an evaluation value of the second channel quality information to an evaluation value of the first channel quality information as the interference value of the interference received by the terminal device when the terminal device accesses the aggregated bandwidth.

[0013] In an implementation, both the first bandwidth and the second bandwidth correspond to a first operator, and the third bandwidth corresponds to a second operator.

[0014] In implementation, the method may further include a step of the network device receiving capability information of the terminal device from the terminal device, the capability information indicating that the terminal device supports accessing the aggregate bandwidth, and a step of the network device determining, based on the capability information, that the terminal device supports accessing the aggregate bandwidth.

[0015] In implementation, the method may further include a step in which the network device sends out a channel state information reference signal CSI-RS of a cell corresponding to the first bandwidth, and the first channel quality information is determined by the terminal device based on the CSI-RS when the terminal device accesses the cell.

[0016] In implementation, the method may further include a step in which the network device sends CSI-RS configuration information to the terminal device, the CSI-RS configuration information including CSI-RS configuration information corresponding to the first bandwidth and CSI-RS configuration information corresponding to the second bandwidth.

[0017] In implementations, the channel quality information includes one or more of a received signal strength indication RSSI or a channel quality indication CQI.

[0018] According to a second aspect, an embodiment of the present application provides another interference determination method, which can be implemented by a terminal device or a chip used in the terminal device. Carried out by The method includes the steps of: when the terminal device accesses a first bandwidth, the terminal device sending first channel quality information corresponding to the first bandwidth to the network device; when the terminal device accesses an aggregated bandwidth, the terminal device sending second channel quality information corresponding to the aggregated bandwidth to the network device, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and the second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth; and when the terminal device receives bandwidth setting information from the network device, the bandwidth setting information being sent by the network device based on interference received by the terminal device when the terminal device accesses the aggregated bandwidth, the interference being determined based on the first channel quality information and the second channel quality information.

[0019] In this technical solution, the first channel quality information and the second channel quality information are reported, so that the network device can determine the interference received by the terminal device when the terminal device accesses the aggregated bandwidth. In this way, the interference can be quantified. In addition, this helps the terminal device to adaptively adjust whether to operate in a high bandwidth or a low bandwidth based on the interference. This helps the terminal device to operate in an operating bandwidth with low interference, i.e., helps to prevent the terminal device from operating in a bandwidth with strong interference, and helps to improve the performance of the terminal device.

[0020] In implementation, if the interference value of the interference is greater than the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the first bandwidth.

[0021] This technical solution helps the terminal device to operate in a first bandwidth with low interference, and helps to improve the performance of the terminal device.

[0022] In implementation, if the interference value of the interference is equal to or less than the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the aggregate bandwidth.

[0023] In this technical solution, when the interference is low, the device operates in the aggregated bandwidth, which helps to obtain high bandwidth services.

[0024] In implementation, the interference value of the interference is a ratio of the evaluation value of the second channel quality information to the evaluation value of the first channel quality information.

[0025] In an implementation, both the first bandwidth and the second bandwidth correspond to a first operator, and the third bandwidth corresponds to a second operator.

[0026] In implementation, the method may further include the step of the terminal device sending capability information of the terminal device to the network device, the capability information indicating that the terminal device supports accessing the aggregate bandwidth.

[0027] In implementation, the method may further include a step in which the terminal device receives, from the network device, a channel state information reference signal CSI-RS of a cell corresponding to the first bandwidth, and a step in which the terminal device determines first channel quality information based on the CSI-RS.

[0028] In implementation, the method may further include a step in which the terminal device receives CSI-RS configuration information from the network device, the CSI-RS configuration information including CSI-RS configuration information corresponding to the first bandwidth and CSI-RS configuration information corresponding to the second bandwidth.

[0029] In implementations, the channel quality information includes one or more of a received signal strength indication RSSI or a channel quality indication CQI.

[0030] According to a third aspect, an embodiment of the present application provides a communication device. The communication device has some or all of the functions of the network device in the example method according to the first aspect. For example, the functions of the communication device may include the functions of some or all of the embodiments of the present application, or may include the function of independently implementing any embodiment of the present application. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software may include one or more units or modules corresponding to the functions.

[0031] In implementation, the structure of the communication device may include a processing unit and a communication unit. The processing unit is configured to support the communication device in performing the functions of the network device in the aforementioned method. The communication unit is configured to support communication between the communication device and another device. The communication device may also include a storage unit. The storage unit is configured to be coupled to the processing unit and the sending unit and stores computer programs and data required for the communication device.

[0032] In one implementation, a communication apparatus includes a communication unit and a processing unit. The communication unit is configured to receive first channel quality information corresponding to a first bandwidth from a terminal device, the first channel quality information being sent by the terminal device when the terminal device accesses the first bandwidth. The communication unit is further configured to receive second channel quality information corresponding to an aggregated bandwidth from the terminal device, the second channel quality information being sent by the terminal device when the terminal device accesses the aggregated bandwidth, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and the second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth. The processing unit is configured to determine interference received by the terminal device when the terminal device accesses the aggregated bandwidth based on the first channel quality information and the second channel quality information. The communication unit is further configured to send bandwidth setting information to the terminal device based on the interference.

[0033] For example, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.

[0034] In one implementation, a communications apparatus includes a transceiver and a processor. The transceiver is configured to receive first channel quality information corresponding to a first bandwidth from a terminal device, the first channel quality information being sent by the terminal device when the terminal device accesses the first bandwidth. The transceiver is further configured to receive second channel quality information corresponding to an aggregated bandwidth from the terminal device, the second channel quality information being sent by the terminal device when the terminal device accesses the aggregated bandwidth, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and the second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth. The processor is configured to determine interference received by the terminal device when the terminal device accesses the aggregated bandwidth based on the first channel quality information and the second channel quality information. The transceiver is further configured to send bandwidth setting information to the terminal device based on the interference.

[0035] According to a fourth aspect, an embodiment of the present application provides a communication device. The communication device has some or all of the functions of the terminal device in the example method according to the second aspect. For example, the functions of the communication device may include some or all of the functions in some or all of the embodiments of the present application, or may include functions that independently implement any of the embodiments of the present application. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software may include one or more units or modules corresponding to the functions.

[0036] In implementation, the structure of the communication device may include a processing unit and a communication unit. The processing unit is configured to support the communication device to perform the functions of the terminal device in the aforementioned method. The communication unit is configured to support communication between the communication device and another device. The communication device may also include a storage unit. The storage unit is configured to be coupled to the processing unit and the sending unit and stores computer programs and data required for the communication device.

[0037] In one implementation, a communication device includes a processing unit and a communication unit. The processing unit is configured to invoke the communication unit to send first channel quality information corresponding to the first bandwidth to a network device when the communication device accesses a first bandwidth. The processing unit is further configured to invoke the communication unit to send second channel quality information corresponding to the aggregated bandwidth to the network device when the communication device accesses an aggregated bandwidth, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and a second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth. The processing unit is further configured to invoke the communication unit to receive bandwidth setting information from the network device, the bandwidth setting information being sent by the network device based on interference received by the communication device when the communication device accesses the aggregated bandwidth, the interference being determined based on the first channel quality information and the second channel quality information.

[0038] For example, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.

[0039] In one implementation, a communications device includes a processor and a transceiver. The processor is configured to invoke the transceiver to send first channel quality information corresponding to the first bandwidth to a network device when the communications device accesses a first bandwidth. The processor is further configured to invoke the transceiver to send second channel quality information corresponding to the aggregated bandwidth to the network device when the communications device accesses an aggregated bandwidth, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and a second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth. The processor is further configured to invoke the transceiver to receive bandwidth setting information from the network device, the bandwidth setting information being sent by the network device based on interference received by the communications device when the communications device accesses the aggregated bandwidth, the interference being determined based on the first channel quality information and the second channel quality information.

[0040] According to a fifth aspect, an embodiment of the present application further provides a communication system, which may comprise a network device according to the first aspect and a terminal device according to the second aspect, or may comprise a communication apparatus according to the third aspect and a communication apparatus according to the fourth aspect.

[0041] According to a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium storing a computer program, the computer program comprising program instructions that, when executed by a communications device, enable the communications device to perform a method according to the first aspect.

[0042] According to a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium storing a computer program, the computer program comprising program instructions that, when executed by a communications device, enable the communications device to perform a method according to the second aspect.

[0043] According to an eighth aspect, the present application further provides a computer program product comprising a computer program or instructions which, when executed on a computer, enable the computer to perform the method according to the first aspect.

[0044] According to a ninth aspect, the present application further provides a computer program product comprising a computer program or instructions which, when executed on a computer, enable the computer to perform the method according to the second aspect.

[0045] According to a tenth aspect, the present application provides a chip system. The chip system includes at least one processor and an interface configured to implement the functionality according to the first aspect, for example, to determine or process at least one of data and information in the aforementioned method. In a possible design, the chip system further includes a memory configured to store computer programs and data required for the transmitting end. The chip system may include a chip, or may include a chip and another discrete component.

[0046] According to an eleventh aspect, the present application provides a chip system. The chip system includes at least one processor and an interface configured to implement the functionality according to the second aspect, for example, to determine or process at least one of data and information in the aforementioned method. In a possible design, the chip system further includes a memory configured to store computer programs and data required by the receiving end. The chip system may include a chip, or may include a chip and another discrete component. [Brief explanation of the drawings]

[0047] [Figure 1a] FIG. 1 is a schematic diagram of spectral division. [Figure 1b] FIG. 1 is a schematic diagram of four-way interference that may exist in a practical high-bandwidth application. [Figure 1c] FIG. 1 is a schematic diagram of the operation of a two-level filter. [Figure 1d] 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present application; [Figure 2] 1 is a schematic flowchart of an interference determination method according to an embodiment of the present application; [Figure 3] 4 is a schematic flowchart of another interference determination method according to an embodiment of the present application; [Figure 4] 1 is a schematic diagram of the structure of a communication device according to an embodiment of the present application; [Figure 5] FIG. 10 is a schematic diagram of the structure of another communication device according to an embodiment of the present application; [Figure 6] 1 is a schematic diagram of a structure of a chip according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0048] In order to better understand the technical solutions provided in the embodiments of the present application, technical terms in the embodiments of the present application will be described first.

[0049] (1) Aggregate Bandwidth

[0050] The aggregated bandwidth can be understood as the bandwidth obtained by aggregating multiple segments of spectrum, or as the high bandwidth obtained by aggregating multiple segments of low bandwidth. An entity responsible for spectrum partitioning divides the available spectrum into segments to allocate to different operators for use. The low bandwidth can be a segment of spectrum obtained through spectrum partitioning, and the high bandwidth can be a segment of spectrum obtained by aggregating multiple low bandwidths. It should be noted that the low bandwidth and the high bandwidth are concepts proposed in this solution for ease of understanding, and "low" and "high" are not used to measure the width of the spectrum. In this embodiment of the present application, the high bandwidth and the aggregated bandwidth may have the same meaning. The low bandwidth may also be referred to as a bandwidth part (BWP).

[0051] For example, see the schematic diagram of spectrum division in FIG. 1a. Spectra 1710.5 to 1785 are used for uplink transmission, and spectra 1805 to 1880 are used for downlink transmission. FIG. 1a shows specific spectrum allocated to operator a and specific spectrum allocated to operator b within spectra 1710.5 to 1785 and 1805 to 1880. In FIG. 1a, each column of spectrum may represent a low-bandwidth spectrum. As shown in FIG. 1a, two segments of the low-bandwidth allocated to operator a may be aggregated into one segment of high bandwidth, and the spectrum width of this high bandwidth is 10M. Although the spectra of the two segments of the low bandwidth aggregated into the high bandwidth are discontinuous, when the high bandwidth is scheduled, discontinuous scheduling may be implemented to fully utilize the 10M discrete spectrum, thereby providing a high-bandwidth experience.

[0052] However, in practical applications with high bandwidth, four-way interference may exist, as shown in Figure 1b. Figure 1b includes terminal device 1 (101), terminal device 2 (103), network device 1 (102), and network device 2 (104). The interference in directions A, B, and D can be resolved, but the interference in direction C cannot currently be resolved. When the interference is strong, a blocking phenomenon may occur on the terminal device 101. That is, the terminal device 101 cannot acquire the desired signal. The reason why the terminal device 101 cannot filter out the interference will be described below.

[0053] Note that the two aggregated low-bandwidth segments shown in FIG. 1a are discontinuous in spectrum for illustrative purposes only. In another implementation, multiple low-bandwidth segments with contiguous spectrum may be aggregated into a high-bandwidth segment. For example, spectrum 1805 to 1812.5 allocated to operator a and spectrum 1812.5 to 1827.5 allocated to operator b may be aggregated into a high-bandwidth segment. 1812.5 in spectrum 1805 to 1812.5 is the same as 1812.5 in spectrum 1812.5 to 1827.5, indicating that the two spectrum segments are contiguous.

[0054] (2) Two-level filters in the terminal device

[0055] The terminal device includes two filters: a radio frequency (RF) filter and an intermediate frequency (IF) filter. The RF filter is a bandpass filter and can filter out signals outside a target bandwidth. A desired signal and other carrier frequency signals or interference within the target band are received. The IF filter can automatically adjust its filter width based on the carrier bandwidth of the desired signal to filter out interference outside the carrier width. The schematic diagram of the operation of the two-level filter in FIG. 1c is used as an example. The left part of FIG. 1c shows the filtering process of the two-level filter in the case of a single carrier, while the right part of FIG. 1c shows the filtering process of the two-level filter in the case of discrete multicarrier. The columns represent the desired signal, and the triangles represent interference. From the left part of FIG. 1c, it can be seen that in the case of a single carrier, interference can be filtered out after the single carrier passes through the two-level filter.

[0056] In current discrete spectrum solutions, the high bandwidth obtained by aggregating multiple discrete spectrum fragments is a single carrier, and the RF filter can filter out interference outside the band between the lowest and highest frequencies corresponding to the high bandwidth. For example, using the high bandwidth in Figure 1a as an example, the RF filter can filter out interference outside the frequency range (1805 to 1830). The IF filter adaptively adjusts its width based on the width of the single carrier, but it may receive signals in another spectrum (1812.5 to 1827.5), which are interference. Therefore, interference from another spectrum cannot be filtered out through two-level filters in the terminal device. As another example, as can be seen from the right part of Figure 1c, in the case of discrete multicarrier, the discrete multicarrier is used as a single carrier, so interference still exists and is not filtered out even after passing through two-level filters. It should be noted that a single carrier may be understood as a low bandwidth carrier, a multicarrier may be understood as multiple low bandwidth carriers, and a discrete multicarrier may be understood as multiple low bandwidth carriers that are discontinuous in frequency.

[0057] After filtering, the power may be adjusted. In the power adjustment process, the total signal power (the total power of the desired signal and noise) is amplified to the analog-to-digital converter (ADC) dynamic range interval. However, when the interference strength is excessively higher than the desired signal, the desired signal is actually amplified by a small factor, so the power of the amplified desired signal is small, and the signal is not identified as the desired signal, resulting in blocking on the terminal device. In addition, the interference in direction C cannot currently be quantified. Therefore, the terminal device may operate when the interference is strong, and the performance of the terminal device will be affected.

[0058] In view of the above-mentioned problems, in an embodiment of the present application, the interference received by a terminal device when the terminal device accesses an aggregated bandwidth is determined, and bandwidth setting information is sent to the terminal device based on the interference, which helps to prevent the terminal device from operating in a bandwidth with strong interference, and helps to improve the performance of the terminal device.

[0059] To better understand the interference determination method disclosed in the embodiments of the present application, a communication system applicable to the embodiments of the present application will first be described below.

[0060] 1d is a schematic diagram of the architecture of a communication system according to an embodiment of the present application. As shown in FIG. 1d, the communication system includes a terminal device 101 and a network device 102.

[0061] The terminal device 101 may be configured to send, when the terminal device 101 accesses a first bandwidth, first channel quality information corresponding to the first bandwidth to the network device 102, and to send, when the terminal device 101 accesses an aggregated bandwidth, second channel quality information corresponding to the aggregated bandwidth to the network device 102. The aggregated bandwidth is obtained by aggregating at least the first bandwidth and the second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth.

[0062] Correspondingly, the network device 102 may be configured to receive first channel quality information and second channel quality information from the terminal device 101, determine interference received by the terminal device 101 when the terminal device 101 accesses the aggregated bandwidth based on the first channel quality information and the second channel quality information, and send bandwidth setting information based on the interference to the terminal device 101. Correspondingly, the terminal device 101 may be further configured to receive bandwidth setting information.

[0063] The interference received by the terminal device 101 when the terminal device 101 accesses the aggregated bandwidth is determined based on the first channel quality information and the second channel quality information. In this way, the interference can be quantified, and bandwidth setting information is sent to the terminal device 101 based on the interference. Furthermore, the terminal device 101 can determine an operating bandwidth based on the bandwidth setting information. This scheme helps the terminal device to operate in an operating bandwidth with low interference, i.e., helps prevent the terminal device from operating in a bandwidth with strong interference, and helps improve the performance of the terminal device.

[0064] The terminal device 101 may be a user-side entity configured to receive or transmit signals. The terminal device may be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device may be deployed on land, including indoor or outdoor deployment, or handheld or vehicle-mounted deployment. Alternatively, the terminal device may be deployed on water (e.g., on a ship) or in the air (e.g., on an aircraft, balloon, or satellite). The terminal device may include a handheld device, a vehicle-mounted device, a wearable device, or a computing device with wireless communication capabilities. For example, the UE may be a mobile phone, a tablet computer, or a computer with wireless transceiver capabilities. Alternatively, the terminal device may be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a smart vehicle terminal device, a wireless terminal in industrial control, a wireless terminal in autonomous driving, an unmanned aerial vehicle, an unmanned aerial vehicle controller, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The specific technology used by the terminal device and the specific device form are not limited in the embodiments of the present application.

[0065] The network device 102 may be a network-side entity configured to transmit or receive signals. The network device may be an access network device, which may provide functions such as radio resource management, quality of service management, and data encryption and compression to terminal devices. The access network device may be a radio access network (RAN) device. The access network device may include a base station (BS), which may be a device deployed in a radio access network and capable of performing wireless communication with terminal devices. The base station may have multiple forms, such as a macro base station, a micro base station, a relay station, an access point, a satellite, and an unmanned aerial vehicle. For example, the access network device may be a fifth-generation (5G) th The network device may be a base station in a 5G (5G) communication system or a base station in a long term evolution (LTE) system. A base station in 5G may also be called a transmission reception point (TRP) or a next generation NodeB (gNB). The specific technology used by the network device and the specific device configuration are not limited in the embodiments of this application.

[0066] The technology described in the embodiments of the present application is applicable to various communication systems, for example, fifth generation (5G) systems. th The present invention may be applicable to a 5G (5th generation) communication system, a system that integrates multiple communication systems, or a future evolved communication system, such as a 6G communication system. It should be noted that the network element names and message names mentioned in the embodiments of the present application are used as examples, and the network element names and message names applied to different communication systems may be different. This is not a limitation of the embodiments of the present application.

[0067] It can be understood that the communication system described in the embodiments of the present application is intended to more clearly describe the technical solutions in the embodiments of the present application, and does not limit the technical solutions provided in the embodiments of the present application. Those skilled in the art may know that with the evolution of system architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application can also be applied to similar technical problems.

[0068] The interference determination method and communication device provided in the present application will be described in detail below with reference to the accompanying drawings.

[0069] 2 is a schematic flowchart of an interference determination method according to an embodiment of the present application, which includes but is not limited to the following steps:

[0070] Step S201: When a terminal device accesses a first bandwidth, the terminal device sends first channel quality information corresponding to the first bandwidth to a network device. In response, the network device receives the first channel quality information from the terminal device, where the first channel quality information is sent by the terminal device when the terminal device accesses the first bandwidth.

[0071] The first bandwidth is a low bandwidth. In implementation, the terminal device may access the first bandwidth by random access, determine first channel quality information corresponding to the first bandwidth when the terminal device accesses the first bandwidth, and send the first channel quality information to the network device. In this embodiment of the present application, the channel quality information (such as the first channel quality information and the second channel quality information) may include, but is not limited to, one or more of a received signal strength indication (RSSI) and a channel quality indication (CQI).

[0072] It should be noted that a terminal device accessing a bandwidth can be understood as the terminal device accessing a cell corresponding to this bandwidth. One cell may correspond to one or more bandwidths, and the one or more bandwidths corresponding to a cell may include low bandwidths and aggregate bandwidths, and there may be one or more low bandwidths and one or more high bandwidths. Optionally, the first bandwidth may be configured for the terminal device by the network device.

[0073] In implementation, the terminal device may determine the first channel quality information corresponding to the first bandwidth in the following manner: the terminal device receives a channel state information reference signal (CSI-RS) of a cell corresponding to the first bandwidth from a network device, and obtains the first channel quality information through measurements based on the CSI-RS.

[0074] Step S202: When the terminal device accesses the aggregated bandwidth, the terminal device sends second channel quality information corresponding to the aggregated bandwidth to the network device, where the aggregated bandwidth is obtained by aggregating at least a first bandwidth and a second bandwidth, and a spectrum of a third bandwidth is interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth. Correspondingly, the network device receives second channel quality information from the terminal device, where the second channel quality information is sent by the terminal device when the terminal device accesses the aggregated bandwidth.

[0075] After accessing the first bandwidth (low bandwidth), the terminal device may switch from the first bandwidth to the aggregate bandwidth, i.e., the operating bandwidth of the terminal device changes from the first bandwidth to the aggregate bandwidth.

[0076] The aggregated bandwidth is obtained by aggregating at least a first bandwidth and a second bandwidth, with a third bandwidth spectrum interposed between the first and second bandwidth spectra. The first, second, and third bandwidths may all be low bandwidths. Alternatively, the first and second bandwidths may be low bandwidths, and there may be one or more third bandwidths. If the third bandwidth spectrum intervenes between the first and second bandwidth spectra, this indicates that the first and second bandwidth spectra are discontinuous. In this case, the terminal device operates in the aggregated bandwidth, and the third bandwidth signal causes interference received by the terminal device. Note that the third bandwidth signal may be a signal carried on a carrier corresponding to the third bandwidth spectrum. Different spectrums may correspond to different carriers. Optionally, the low bandwidth and the aggregate bandwidth in the embodiments of the present application may be a frequency division duplexing (FDD) bandwidth, a time division duplexing (TDD) bandwidth, a standard bandwidth, or a non-standard bandwidth. This is not limited in the embodiments of the present application. The standard bandwidth may refer to a bandwidth defined by a standard protocol, and the non-standard bandwidth may refer to a bandwidth other than the bandwidth defined by the standard protocol.

[0077] In one implementation, both the first and second bandwidths may correspond to a first operator, and the third bandwidth may correspond to a second operator. In other words, bandwidths of different operators are interposed between the first and second bandwidths. In this case, interference received by a terminal device when the terminal device accesses the aggregated bandwidth is interference from different operators. The fact that the first bandwidth corresponds to the first operator may indicate that the first bandwidth is allocated to the first operator and that the first operator has the right to schedule and allocate the first bandwidth. In another implementation, the first and second bandwidths may correspond to different operators. For example, the first bandwidth corresponds to operator a, the second bandwidth corresponds to operator b, and the third bandwidth corresponds to operator c. Operator a and operator b may be operators that share bandwidth resources.

[0078] Optionally, the cell corresponding to the first bandwidth and the cell corresponding to the aggregate bandwidth may be the same cell, and the network device may be a network device (e.g., an access network device) corresponding to the cell.

[0079] Optionally, after accessing the first bandwidth, the terminal device may receive first bandwidth setting information from the network device, where the first bandwidth setting information may indicate the aggregate bandwidth. Then, the terminal device may determine the operating bandwidth of the terminal device as the aggregate bandwidth based on the first bandwidth setting information. When the first bandwidth setting information is received and the operating bandwidth of the terminal device is the first bandwidth, the terminal device may switch from the first bandwidth to the aggregate bandwidth. When the first bandwidth setting information is received and the operating bandwidth of the terminal device is the aggregate bandwidth, the terminal device may continue to operate in the aggregate bandwidth. Optionally, after accessing the first bandwidth, the terminal device may instead autonomously access the aggregate bandwidth.

[0080] In implementation, the terminal device may send capability information of the terminal device to the network device, and the capability information may indicate whether the terminal device supports accessing the aggregated bandwidth. Correspondingly, the network device receives the capability information from the terminal device and determines whether the terminal device supports accessing the aggregated bandwidth based on the capability information. The network device sends the first bandwidth setting information to the terminal device only when it determines that the terminal device supports accessing the aggregated bandwidth. Alternatively, the terminal device attempts to access the aggregated bandwidth only when the terminal device supports accessing the aggregated bandwidth.

[0081] In implementation, the terminal device may determine the second channel quality information corresponding to the aggregated bandwidth in the following manner: the terminal device receives CSI-RS of the cells corresponding to the aggregated bandwidth from the network device, and obtains the second channel quality information through measurements based on the CSI-RS. Optionally, the network device may send the first bandwidth setting information to the terminal device only when it determines that the terminal device supports accessing the aggregated bandwidth.

[0082] Step S203: The network device determines, based on the first channel quality information and the second channel quality information, interference received by the terminal device when the terminal device accesses the aggregate bandwidth.

[0083] After receiving the first channel quality information and the second channel quality information, the network device may determine, based on the first channel quality information and the second channel quality information, interference received by the terminal device when the terminal device accesses the aggregated bandwidth.

[0084] In implementation, the network device may determine an interference value of interference received by the terminal device when the terminal device accesses the aggregated bandwidth based on a ratio of an evaluation value of the second channel quality information to an evaluation value of the first channel quality information. Specifically, the network device may determine a ratio of an evaluation value of the second channel quality information to an evaluation value of the first channel quality information as the interference value of interference received by the terminal device when the terminal device accesses the aggregated bandwidth.

[0085] It should be noted that the channel quality information (such as the first channel quality information and the second channel quality information) includes interference signal power, where the first channel quality information is channel quality information corresponding to a low bandwidth (the first bandwidth), and the second channel quality information is channel quality information corresponding to a high bandwidth (the aggregated bandwidth). From the above description, it can be seen that the two-level filter in the terminal device can filter out interference caused when the terminal device operates in the low bandwidth, but cannot filter out interference from the third bandwidth when the terminal device operates in the aggregated bandwidth. Therefore, the ratio of the evaluation value of the second channel quality information to the evaluation value of the first channel quality information can be used to quantify the interference received by the terminal device when it accesses the aggregated bandwidth. It should be noted that the reference signal received power (RSRP) does not include the interference signal power. Therefore, it is impossible to quantify the interference received by the terminal device when it accesses the aggregated bandwidth using RSRP.

[0086] The channel quality information (such as the first channel quality information and the second channel quality information) may include, but is not limited to, one or more of RSSI and CQI. RSSI includes both desired signal power and interference signal power. Thus, RSSI is used to quantify interference received by a terminal device when the terminal device accesses the aggregate bandwidth, which helps to improve the accuracy of quantifying the interference.

[0087] Step S204: The network device sends bandwidth setting information to the terminal device based on the interference, and the terminal device correspondingly receives bandwidth setting information from the network device.

[0088] After determining the interference received by the terminal device when the terminal device accesses the aggregated bandwidth, the network device may send bandwidth setting information (e.g., referred to as second bandwidth setting information) to the terminal device based on the interference. The terminal device may adjust the operating bandwidth based on the second bandwidth setting information, or may keep the operating bandwidth unchanged.

[0089] In implementation, the terminal device may operate in the aggregated bandwidth and send second channel quality information to the network device, and then periodically fall back to the first bandwidth (i.e., periodically access the first bandwidth), measure channel quality information corresponding to the first bandwidth, and send the measured channel quality information to the network device. Alternatively, the terminal device may periodically switch to the aggregated bandwidth, measure channel quality information corresponding to the aggregated bandwidth, and send the measured channel quality information to the network device. Thus, when the terminal device receives the second bandwidth setting information, the operating bandwidth of the terminal device may be the first bandwidth or the aggregated bandwidth, or may be a bandwidth other than the first bandwidth and the aggregated bandwidth.

[0090] The second bandwidth setting information may indicate a first bandwidth or an aggregate bandwidth. When the second bandwidth setting information indicates a bandwidth, this may indicate that the network device configures the operating bandwidth of the terminal device as this bandwidth. In this embodiment of the present application, the second bandwidth setting information indicating the first bandwidth has the same meaning as the second bandwidth setting information indicating that the operating bandwidth of the terminal device is the first bandwidth. Similarly, the second bandwidth setting information indicating the aggregate bandwidth has the same meaning as the second bandwidth setting information indicating that the operating bandwidth of the terminal device is the aggregate bandwidth. In implementation, if the interference value of the interference received by the terminal device when the terminal device accesses the aggregate bandwidth is greater than a preset interference value, the second bandwidth setting information may indicate that the operating bandwidth of the terminal device is the first bandwidth. This scheme helps the terminal device operate in the first bandwidth with low interference and improves the performance of the terminal device. In implementation, if the interference value of the interference received by the terminal device when the terminal device accesses the aggregate bandwidth is equal to or less than the preset interference value, the bandwidth setting information may indicate that the operating bandwidth of the terminal device is the aggregate bandwidth. In this way, when interference is low, the device operates in the aggregate bandwidth, which is helpful to obtain high-bandwidth service. The preset interference value may be indicated by the network device or may be agreed upon in the protocol. The preset interference value may be an empirical value. This is not limited in the embodiments of the present application.

[0091] For example, the second bandwidth setting information indicates the first bandwidth. When the terminal device receives the second bandwidth setting information, if the operating bandwidth of the terminal device is the aggregate bandwidth, the terminal device may be switched from the aggregate bandwidth to the first bandwidth. If the operating bandwidth of the terminal device is the first bandwidth, the terminal device may continue to operate in the first bandwidth. For example, the second bandwidth setting information indicates the aggregate bandwidth. When the terminal device receives the second bandwidth setting information, if the operating bandwidth of the terminal device is the aggregate bandwidth, the terminal device may continue to operate in the aggregate bandwidth. If the operating bandwidth of the terminal device is the first bandwidth, the terminal device may be switched from the first bandwidth to the aggregate bandwidth.

[0092] In this embodiment of the present application, the interference received by the terminal device when the terminal device accesses the aggregated bandwidth is determined based on the first channel quality information and the second channel quality information, and thus the interference can be quantified. This also helps adaptively adjust whether the terminal device operates in a high bandwidth or a low bandwidth based on the interference. This helps the terminal device operate in an operating bandwidth with low interference, i.e., prevents the terminal device from operating in a bandwidth with strong interference, and improves the performance of the terminal device. This also helps solve the problem of terminal devices being blocked due to interference from different operators, provides application feasibility for aggregating discrete spectrum into a virtual high bandwidth, and also provides implementation feasibility for operator joint construction and sharing. In this way, resource utilization is improved, and user experience is improved.

[0093] 3 is a schematic flowchart of another interference determination method according to an embodiment of the present application. This method describes how a network device configures CSI-RS configuration information for a terminal device, and how the terminal device sends second channel quality information corresponding to an aggregated bandwidth to the network device based on the CSI-RS configuration information. This method may include, but is not limited to, the following steps:

[0094] Step S301: When a terminal device accesses a first bandwidth, the terminal device sends first channel quality information corresponding to the first bandwidth to a network device. In response, the network device receives the first channel quality information from the terminal device, where the first channel quality information is sent by the terminal device when the terminal device accesses the first bandwidth.

[0095] It should be noted that for the process of performing step S301, please refer to the detailed description of step S201 in Figure 2, and the details will not be described again here.

[0096] Step S302: The network device sends CSI-RS configuration information to the terminal device, where the CSI-RS configuration information includes CSI-RS configuration information corresponding to the first bandwidth and CSI-RS configuration information corresponding to the second bandwidth. In response, the terminal device receives the CSI-RS configuration information from the network device.

[0097] The configuration information of the CSI-RS may be used by the terminal device to measure second channel quality information corresponding to the aggregated bandwidth. The configuration information of the CSI-RS may include, but is not limited to, one or more of: a time-frequency location of the CSI-RS and periodicity information of a periodic CSI-RS. Correspondingly, the configuration information of the CSI-RS (e.g., referred to as the first CSI-RS) corresponding to the first bandwidth may include, but is not limited to, one or more of: a time-frequency location of the first CSI-RS and periodicity information of the first CSI-RS (if the first CSI-RS is a periodic CSI-RS). The configuration information of the CSI-RS (e.g., referred to as the second CSI-RS) corresponding to the second bandwidth may include, but is not limited to, one or more of: a time-frequency location of the second CSI-RS and periodicity information of the second CSI-RS (if the second CSI-RS is a periodic CSI-RS).

[0098] In implementation, the network device may configure CSI-RS configuration information based on the capability information of the terminal device. The terminal device may send the capability information to the network device. The capability information may indicate at least one of whether the terminal device supports periodic CSI-RS, whether the terminal device supports aperiodic CSI-RS, whether the terminal device supports m periodic CSI-RS, and whether the terminal device supports n aperiodic CSI-RS, where m and n are both integers.

[0099] Optionally, the quantity of low bandwidths included in the aggregated bandwidth is indicated by z (z ≧ 2). When m ≧ z, the network device may configure z periodic CSI-RSs for the terminal device. In this case, the CSI-RS configuration information may include the configuration information of the z periodic CSI-RSs. When n ≧ z, the network device may configure z aperiodic CSI-RSs for the terminal device. In this case, the CSI-RS configuration information may include the configuration information of the z aperiodic CSI-RSs. When m < z, the network device may configure m periodic CSI-RSs for the terminal device and may configure (z - m) aperiodic CSI-RSs for the terminal device. In this case, the CSI-RS configuration information may include the configuration information of the m periodic CSI-RSs and the configuration information of the (z - m) aperiodic CSI-RSs. When n < z, the network device may configure n aperiodic CSI-RSs for the terminal device and may configure (z - n) periodic CSI-RSs for the terminal device. In this case, the CSI-RS configuration information may include the configuration information of the n aperiodic CSI-RSs and the configuration information of the (z - n) periodic CSI-RSs. When m < z, the network device may configure one periodic CSI-RS for a part of the low bandwidths included in the aggregated bandwidth (for example, one low bandwidth: the first bandwidth). In this case, the CSI-RS configuration information may include the configuration information of one periodic CSI-RS. Note that a part of the low bandwidths may be z1 low bandwidths, where 1 < z1 < z. Correspondingly, in this case, the CSI-RS configuration information may include the configuration information of z1 periodic CSI-RSs, and one low bandwidth corresponds to the configuration information of one periodic CSI-RS. When n < z, the network device may configure one aperiodic CSI-RS for a part of the low bandwidths included in the aggregated bandwidth (for example, one low bandwidth: the second bandwidth). In this case, the CSI-RS configuration information may include the configuration information of one aperiodic CSI-RS. Note that a part of the low bandwidths may be z2 low bandwidths, where 1 < z2 < z.Correspondingly, in this case, the CSI-RS configuration information may include z2 aperiodic CSI-RS configuration information, and one low bandwidth corresponds to one aperiodic CSI-RS configuration information.

[0100] In implementation, when the quantity of CSI-RSs configured for a terminal device by a network device is less than the quantity of low bandwidths included in the aggregated bandwidth, i.e., when the CSI-RS configuration information is CSI-RS configuration information configured for only a portion of the low bandwidths included in the aggregated bandwidth, the channel quality information corresponding to the other portions of the low bandwidths included in the aggregated bandwidth may be the channel quality information corresponding to the low bandwidths configured using the CSI-RS configuration information. That is, existing CSI measurement results are reused. For example, if the aggregated bandwidth is obtained by aggregating low bandwidths a, b, and c, the CSI-RS configuration information sent by the network device to the terminal device includes CSI-RS configuration information corresponding to low bandwidth a and CSI-RS configuration information corresponding to low bandwidth b, but does not include CSI-RS configuration information corresponding to low bandwidth c. In this case, the terminal device may measure the channel quality information corresponding to low bandwidth b based on the CSI-RS configuration information corresponding to low bandwidth b, and reuse the channel quality information corresponding to low bandwidth b as the channel quality information corresponding to low bandwidth c. In other words, for a low bandwidth for which CSI-RS configuration information is not configured (e.g., called low bandwidth 1), the CSI measurement result of the spectrum closest to the spectrum of low bandwidth 1 in the aggregated bandwidth (this spectrum is the spectrum of the low bandwidth in the aggregated bandwidth) may be used as the CSI measurement result of low bandwidth 1.

[0101] Step S303: When the terminal device accesses the aggregated bandwidth, the terminal device sends, based on the configuration information of the CSI-RS, second channel quality information corresponding to the aggregated bandwidth to the network device, where the aggregated bandwidth is obtained by aggregating at least a first bandwidth and a second bandwidth, and a spectrum of a third bandwidth is interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth. Correspondingly, the network device receives second channel quality information from the terminal device, where the second channel quality information is sent by the terminal device when the terminal device accesses the aggregated bandwidth.

[0102] After receiving the CSI-RS configuration information from the network device, the terminal device may acquire second channel quality information through measurements based on the CSI-RS configuration information and send the second channel quality information to the network device. Specifically, the terminal device may acquire channel quality information corresponding to the first bandwidth through measurements based on the CSI-RS configuration information corresponding to the first bandwidth, and may acquire channel quality information corresponding to the second bandwidth through measurements based on the CSI-RS configuration information corresponding to the second bandwidth. In other words, the second channel quality information corresponding to the aggregated bandwidth may include channel quality information corresponding to the first bandwidth and channel quality information corresponding to the second bandwidth, which are acquired through measurements when the terminal device accesses the aggregated bandwidth.

[0103] Please note that for the remaining process of performing step S303, please refer to the detailed description of step S202 in Figure 2, which will not be described in detail here.

[0104] Step S304: The network device determines, based on the first channel quality information and the second channel quality information, interference received by the terminal device when the terminal device accesses the aggregate bandwidth.

[0105] Step S305: The network device sends bandwidth setting information to the terminal device based on the interference, and the terminal device correspondingly receives bandwidth setting information from the network device.

[0106] It should be noted that for the process of performing step S304 and step S305, please refer to the detailed description of step S203 and step S204 in Figure 2, and the details will not be described again here.

[0107] In this embodiment of the present application, the interference received by the terminal device when the terminal device accesses the aggregated bandwidth is determined based on the first channel quality information and the second channel quality information, and thus the interference can be quantified. This also helps adaptively adjust whether the terminal device operates in a high bandwidth or a low bandwidth based on the interference. This helps the terminal device operate in an operating bandwidth with low interference, i.e., prevents the terminal device from operating in a bandwidth with strong interference, and improves the performance of the terminal device. This also helps solve the problem of terminal devices being blocked due to interference from different operators, provides application feasibility for aggregating discrete spectrum into a virtual high bandwidth, and also provides implementation feasibility for operator joint construction and sharing. In this way, resource utilization is improved, and user experience is improved.

[0108] In implementation, a terminal device may support a multi-slice filtering mechanism in the aggregated bandwidth, and interference received by the terminal device when the terminal device accesses the aggregated bandwidth can be filtered out based on this mechanism. Supporting the multi-slice filtering mechanism in the aggregated bandwidth may indicate that the terminal device can identify each low bandwidth included in the aggregated bandwidth and perform adaptive filtering for each low bandwidth. Performing adaptive filtering for each low bandwidth indicates that the width of the filter can be automatically adjusted for each low bandwidth to filter out interference outside the carrier width. For example, an aggregated bandwidth is obtained by aggregating a first bandwidth and a second bandwidth, where the carrier width of the first bandwidth is 5M and the carrier width of the second bandwidth is 10M. In this case, the terminal device may identify information carried on the carrier of the first bandwidth, and the width of the filter for this information can be automatically adjusted to 5M, thereby filtering out interference from other carriers. Similarly, the terminal device can identify the information carried on the carrier of the second bandwidth, and for this information, the width of the filter can be automatically adjusted to 10M, so that the interference from another carrier can be filtered out. In this way, the interference problem in the aggregated bandwidth can be fundamentally solved.

[0109] Corresponding to the methods provided in the above method embodiments, the embodiments of the present application further provide corresponding apparatuses, which include corresponding modules or units configured to perform the above embodiments. The modules or units may be software, hardware, or a combination of software and hardware.

[0110] 4 is a schematic diagram of the structure of a communication device according to the present application. The communication device 400 shown in FIG.

[0111] By design, the communication device 400 is a network device.

[0112] For example, the communication unit 401 is configured to receive first channel quality information corresponding to a first bandwidth from the terminal device, where the first channel quality information is sent by the terminal device when the terminal device accesses the first bandwidth. The communication unit 401 is further configured to receive second channel quality information corresponding to an aggregated bandwidth from the terminal device, where the second channel quality information is sent by the terminal device when the terminal device accesses the aggregated bandwidth, where the aggregated bandwidth is obtained by aggregating at least the first bandwidth and the second bandwidth, where a spectrum of a third bandwidth is interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth. The processing unit 402 is configured to determine interference received by the terminal device when the terminal device accesses the aggregated bandwidth based on the first channel quality information and the second channel quality information. The communication unit 401 is further configured to send bandwidth setting information to the terminal device based on the interference.

[0113] In implementation, if the interference value of the interference is greater than the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the first bandwidth.

[0114] In implementation, if the interference value of the interference is equal to or less than the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the aggregate bandwidth.

[0115] In an implementation, when the processing unit 402 is configured to determine the interference received by the terminal device when the terminal device accesses the aggregated bandwidth based on the first channel quality information and the second channel quality information, the processing unit 402 is specifically configured to determine a ratio of the evaluation value of the second channel quality information to the evaluation value of the first channel quality information as the interference value of the interference received by the terminal device when the terminal device accesses the aggregated bandwidth.

[0116] In an implementation, both the first bandwidth and the second bandwidth correspond to a first operator, and the third bandwidth corresponds to a second operator.

[0117] In an implementation, the communication unit 401 is further configured to receive capability information of the terminal device from the terminal device, the capability information indicating that the terminal device supports accessing the aggregate bandwidth, and the processing unit 402 is further configured to determine, based on the capability information, that the terminal device supports accessing the aggregate bandwidth.

[0118] In the implementation, the communication unit 401 is further configured to send a channel state information reference signal CSI-RS of a cell corresponding to the first bandwidth, and the first channel quality information is determined based on the CSI-RS when the terminal device accesses the cell.

[0119] In implementation, the communication unit 401 is further configured to send CSI-RS configuration information to the terminal device, where the CSI-RS configuration information includes CSI-RS configuration information corresponding to the first bandwidth and CSI-RS configuration information corresponding to the second bandwidth.

[0120] In implementations, the channel quality information includes one or more of a received signal strength indication RSSI or a channel quality indication CQI.

[0121] When the communication device 400 is a network device, the communication device is configured to implement the functionality of the network device in the embodiments corresponding to FIGS.

[0122] In design, the communication device 400 is a terminal device.

[0123] For example, the processing unit 402 is configured to invoke the communication unit 401 to send first channel quality information corresponding to the first bandwidth to the network device when the communication device 400 accesses a first bandwidth. The processing unit 402 is further configured to invoke the communication unit 401 to send second channel quality information corresponding to the aggregated bandwidth to the network device when the communication device 400 accesses an aggregated bandwidth, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and a second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth. The processing unit 402 is further configured to invoke the communication unit 401 to receive bandwidth setting information from the network device, the bandwidth setting information being sent by the network device based on interference received by the communication device 400 when the communication device 400 accesses the aggregated bandwidth, the interference being determined based on the first channel quality information and the second channel quality information.

[0124] In implementation, if the interference value of the interference is greater than the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the communication device 400 is the first bandwidth.

[0125] In implementation, if the interference value of the interference is less than or equal to the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the communication device 400 is the aggregate bandwidth.

[0126] In implementation, the interference value of the interference is a ratio of the evaluation value of the second channel quality information to the evaluation value of the first channel quality information.

[0127] In an implementation, both the first bandwidth and the second bandwidth correspond to a first operator, and the third bandwidth corresponds to a second operator.

[0128] In implementation, the processing unit 402 is further configured to invoke the communication unit 401 to send capability information of the communication device 400 to the network device, the capability information indicating that the communication device 400 supports accessing the aggregate bandwidth.

[0129] In implementation, the processing unit 402 is further configured to invoke the communication unit 401 to receive a channel state information reference signal CSI-RS of a cell corresponding to the first bandwidth from the network device, and determine first channel quality information based on the CSI-RS.

[0130] In implementation, the processing unit 402 is further configured to invoke the communication unit 401 to receive CSI-RS configuration information from the network device, where the CSI-RS configuration information includes CSI-RS configuration information corresponding to the first bandwidth and CSI-RS configuration information corresponding to the second bandwidth.

[0131] In implementations, the channel quality information includes one or more of a received signal strength indication RSSI or a channel quality indication CQI.

[0132] When the communication device 400 is a terminal device, the communication device 400 is configured to implement the functions of the terminal device in the embodiments shown in FIGS.

[0133] 5 is a schematic diagram of the structure of another communication device according to the present application. The communication device 500 shown in FIG. 5 comprises at least one processor 501 and a transceiver 502. Optionally, the device may further comprise a memory 503.

[0134] The memory 503 may be a volatile memory, such as a random access memory. Alternatively, the memory may be a non-volatile memory, such as a read-only memory, flash memory, hard disk drive (HDD), or solid-state drive (SSD). Alternatively, the memory 503 may be any other medium capable of carrying or storing expected program code in the form of instructions or data structures and accessible by a computer. However, the memory 503 is not limited thereto. The memory 503 may also be a combination of the aforementioned memories.

[0135] In the embodiment of the present application, the specific connection medium between the processor 501 and the transceiver 502 and the memory 503 is not limited. In this embodiment of the present application, the processor 501 and the transceiver 502 and the memory 503 are interconnected using a bus 504 in the figure. The bus 504 is shown using a bold line in the figure. The connection manner of other components is merely an example for description and is not used as a limitation. The bus 504 may be categorized into an address bus, a data bus, a control bus, etc. For ease of illustration, the bus is shown using only one bold line in FIG. 5. However, this does not indicate that there is only one bus or one type of bus.

[0136] The processor 501 may have a data sending / receiving function and can communicate with another device. In the device shown in Figure 5, an independent data communication unit, such as a transceiver 502, may be disposed, which is configured to receive and send data. When communicating with another device, the processor 501 may perform data transmission through the transceiver 502.

[0137] In an example, when the network device is in the form shown in FIG. 5, the processor of FIG. 5 may perform the method performed by the network device in any one of the method embodiments described above.

[0138] In an example, when the terminal device is in the form shown in FIG. 5, the processor of FIG. 5 may perform the method performed by the terminal device in any one of the method embodiments described above.

[0139] Specifically, the functions / implementation processes of both the processing unit and the communication unit of Figure 4 may be implemented by the processor 501 of Figure 5 by invoking computer-executable instructions stored in memory 503. Alternatively, the functions / implementation processes of the processing unit of Figure 4 may be implemented by the processor 501 of Figure 5 by invoking computer-executable instructions stored in memory 503, and the functions / implementation processes of the communication unit of Figure 4 may be implemented by the transceiver 502 of Figure 5.

[0140] In implementation, the communication device 500 may include circuitry, which may implement the sending, receiving, or communication functions in the aforementioned method embodiments. The processor described in this application may be implemented in the following ways: integrated circuit (IC), analog IC, radio frequency integrated circuit (RFIC), mixed-signal IC, application-specific integrated circuit (ASIC), printed circuit board (PCB), electronic device, etc. Alternatively, the processor may be fabricated using the following IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide semiconductor (NMOS), p-channel metal oxide semiconductor (PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0141] The communication device described in the above embodiment may be a network device or a terminal device. However, the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited to that shown in FIG. 5. The communication device may be an independent device or part of a larger device. For example, the communication device may be: (1) An independent integrated circuit IC, chip, or chip system or subsystem. (2) A set including one or more ICs. Optionally, the set of ICs may also include a storage component configured to store data and computer programs. (3) ASIC, such as a modem. (4) A module that can be incorporated into another device. (5) Receivers, terminals, intelligent terminals, cellular phones, wireless devices, handheld devices, mobile units, in-vehicle devices, network devices, cloud devices, artificial intelligence devices, etc.; or (6) Another device.

[0142] For the case where the communication device can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip shown in Figure 6. The chip 600 shown in Figure 6 comprises a processor 601 and an interface 602. There may be one or more processors 601 and there may be multiple interfaces 602.

[0143] The case where the chip 600 is configured to implement the functions of a network device in an embodiment of the present application will be described below.

[0144] The interface 602 is configured to receive first channel quality information corresponding to the first bandwidth from the terminal device, the first channel quality information being sent by the terminal device when the terminal device accesses the first bandwidth.

[0145] The interface 602 is further configured to receive second channel quality information corresponding to the aggregated bandwidth from the terminal device, the second channel quality information being sent by the terminal device when the terminal device accesses the aggregated bandwidth, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and the second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth.

[0146] The processor 601 is configured to determine, based on the first channel quality information and the second channel quality information, interference received by the terminal device when the terminal device accesses the aggregate bandwidth.

[0147] The interface 602 is further configured to send bandwidth setting information to the terminal device based on the interference.

[0148] Specifically, in this case, for the operations performed by the processor 601 and the interface 602, please refer to the descriptions related to the network device in the embodiments corresponding to FIGS.

[0149] The case where the chip 600 is configured to implement the functions of the terminal device in the embodiment of the present application will be described below.

[0150] The processor 601 is configured to invoke the interface 602 to send first channel quality information corresponding to the first bandwidth to the network device when the chip 600 accesses the first bandwidth.

[0151] The processor 601 is further configured to, when the chip 600 accesses the aggregated bandwidth, invoke the interface 602 to send second channel quality information corresponding to the aggregated bandwidth to the network device, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and the second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth.

[0152] The processor 601 is further configured to invoke the interface 602 to receive bandwidth setting information from the network device, the bandwidth setting information being sent by the network device based on interference received by the terminal device when the terminal device accesses the aggregate bandwidth, and the interference being determined based on the first channel quality information and the second channel quality information.

[0153] Specifically, in this case, for the operations performed by the processor 601 and the interface 602, please refer to the descriptions associated with the terminal device in the embodiments corresponding to FIGS.

[0154] Optionally, the chip further comprises a memory 603 configured to store necessary computer programs and necessary data. The memory 603 may be located separately or may be integrated with the processor 601, as shown in dashed box 603 in Figure 6.

[0155] An embodiment of the present application further provides a communication system, which may include a network device and a terminal device in an embodiment corresponding to FIGS.

[0156] It can be understood that in some scenarios, some optional features in the embodiments of the present application can be independently implemented to solve corresponding technical problems and achieve corresponding effects, without relying on other features, for example, without relying on the solutions on which these optional features are currently based. Alternatively, in some scenarios, optional features are combined with other features based on requirements. Correspondingly, the devices provided in the embodiments of the present application can also implement these features or functions accordingly. Details will not be described in this specification.

[0157] Those skilled in the art may further understand that the various illustrative logical blocks and steps enumerated in the embodiments of the present application may be implemented by electronic hardware, computer software, or a combination thereof. Whether a function is implemented using hardware or software depends on the specific application and design requirements of the overall system. Those skilled in the art may use various methods to implement the function for the corresponding application, but this implementation should not be considered to go beyond the scope of the embodiments of the present application.

[0158] The solutions described in this application may be implemented in various manners. For example, the techniques may be implemented by hardware, software, or a combination thereof. In the case of a hardware implementation, a processing unit configured to execute the techniques in a communication device (e.g., a base station, a terminal, a network entity, a core network element, or a chip) may be implemented in one or more general-purpose processors, digital signal processors (DSPs), digital signal processing components, application-specific integrated circuits (ASICs), programmable logic devices, field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof. The general-purpose processor may be a microprocessor. Optionally, the general-purpose processor may alternatively be any conventional processor, controller, microcontroller, or state machine. The processor may alternatively be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors with digital signal processor cores, or any other similar configuration.

[0159] The present application further provides a computer-readable medium storing a computer program, which, when executed by a computer, implements the functions of any one of the above-mentioned method embodiments.

[0160] The present application further provides a computer program product, which, when executed by a computer, implements the functions of any one of the above-mentioned method embodiments.

[0161] All or a portion of the foregoing embodiments may be implemented using software, hardware, firmware, or any combination thereof. When an embodiment is implemented using software, all or a portion of the embodiment may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded into a computer and executed on the computer, the procedures or functions according to the embodiments of the present application are generated, in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or another programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, or digital subscriber line (DSL)) or wireless (e.g., infrared, radio, or microwave) methods. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device that integrates one or more available media, such as a server or a data center. The available medium may be magnetic media (e.g., floppy disks, hard disks, or magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), semiconductor media (e.g., solid state drives (SSDs)), etc.

[0162] It may be understood that the term "embodiment" referred to throughout this specification means that a particular feature, structure, or characteristic associated with this embodiment is included in at least one embodiment of the present application. Thus, embodiments throughout this specification do not necessarily refer to the same embodiment. In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It may be understood that the sequential numbers of the processes described above do not imply an order of execution in various embodiments of the present application. The order of execution of the processes should be determined based on the functions and internal logic of the processes and should not be construed as any limitation on the implementation process of the embodiments of the present application.

[0163] It can be understood that in this application, "when," "if," and "in the case of" all mean that the device performs the corresponding processing in the object case, are not intended to limit the time, do not necessarily require that the device have a decision action during implementation, and do not imply any other limitation.

[0164] In this application, elements referred to in the singular are intended to mean "one or more" and not "one and only one," unless otherwise specified. In this application, "at least one" is intended to mean "one or more," and "plurality" is intended to mean "two or more," unless otherwise specified.

[0165] Additionally, the terms "system" and "network" may be used interchangeably herein. The term "and / or" herein describes only the association relationship between associated objects and represents three possible relationships. For example, A and / or B may represent three cases: when only A exists, when both A and B exist, and when only B exists. A may be singular or plural, and B may be singular or plural.

[0166] "Predefine" in this application may be understood as "define," "predefine," "store," "prestore," "prenegotiate," "preconfigure," "solidify," or "pre-bake."

[0167] As can be understood by those skilled in the art, for the sake of convenience, the detailed operation processes of the aforementioned systems, devices and units may be referred to the corresponding processes in the aforementioned method embodiments, and the details will not be described again here.

[0168] The same or similar parts in the embodiments of the present application should be cross-referenced. In the embodiments and implementations / methods / implementation methods in the embodiments of the present application, unless otherwise specified or unless a logical contradiction occurs, the terms and / or descriptions are consistent and can be cross-referenced between different embodiments and between implementations / methods / implementation methods in the embodiments. The technical features in different embodiments and implementations / methods / implementation methods in the embodiments can be combined to form new embodiments, implementations, methods, or implementation methods based on their internal logical relationships. The implementations of the present application do not constitute limitations on the protection scope of the present application.

[0169] The above description is merely a specific implementation of the present application and is not intended to limit the scope of protection of the present application. Any variations or replacements that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application shall fall within the scope of protection of the present application.

Claims

1. 1. A method for determining interference, comprising: receiving, by a network device, first channel quality information corresponding to a first bandwidth from a terminal device, the first channel quality information being sent by the terminal device when the terminal device accesses the first bandwidth; receiving, by the network device, second channel quality information from the terminal device corresponding to an aggregated bandwidth, the second channel quality information being sent by the terminal device when the terminal device accesses the aggregated bandwidth, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and a second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth; determining, by the network device, interference received by the terminal device when the terminal device accesses the aggregated bandwidth based on the first channel quality information and the second channel quality information; sending, by the network device, bandwidth setting information to the terminal device based on the interference; An interference determination method comprising:

2. The method of claim 1 , wherein if the interference value of the interference is greater than a preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the first bandwidth.

3. The method of claim 2 , wherein if the interference value of the interference is less than or equal to the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the aggregate bandwidth.

4. The step of determining, by the network device, interference received by the terminal device when the terminal device accesses the aggregated bandwidth based on the first channel quality information and the second channel quality information, comprises:

4. The method according to claim 1, further comprising: determining, by the network device, a ratio of an evaluation value of the second channel quality information to an evaluation value of the first channel quality information as an interference value of the interference received by the terminal device when the terminal device accesses the aggregated bandwidth.

5. 4. The method of claim 1, wherein both the first bandwidth and the second bandwidth correspond to a first operator, and the third bandwidth corresponds to a second operator.

6. receiving, by the network device, capability information of the terminal device from the terminal device, the capability information indicating that the terminal device supports accessing the aggregated bandwidth; determining, by the network device, based on the capability information, that the terminal device supports accessing the aggregated bandwidth; The method of any one of claims 1 to 3, further comprising:

7. 4. The method according to claim 1, further comprising the step of transmitting, by the network device, a channel state information reference signal CSI-RS of a cell corresponding to the first bandwidth, wherein the first channel quality information is determined by the terminal device based on the CSI-RS when the terminal device accesses the cell.

8. 4. The method according to claim 1, further comprising a step of sending CSI-RS configuration information to the terminal device by the network device, wherein the CSI-RS configuration information includes CSI-RS configuration information corresponding to the first bandwidth and CSI-RS configuration information corresponding to the second bandwidth.

9. 4. The method of any one of claims 1 to 3, wherein the channel quality information comprises one or more of a received signal strength indication RSSI or a channel quality indication CQI.

10. 1. A method for determining interference, comprising: sending, by a terminal device, first channel quality information corresponding to the first bandwidth to a network device when the terminal device accesses the first bandwidth; sending, by the terminal device when the terminal device accesses an aggregated bandwidth, second channel quality information corresponding to the aggregated bandwidth to the network device, the aggregated bandwidth being obtained by aggregating at least the first bandwidth and a second bandwidth, with a spectrum of a third bandwidth interposed between the spectrum of the first bandwidth and the spectrum of the second bandwidth; receiving, by the terminal device, bandwidth configuration information from the network device, the bandwidth configuration information being sent by the network device based on interference received by the terminal device when the terminal device accesses the aggregated bandwidth, the interference being determined based on the first channel quality information and the second channel quality information; An interference determination method comprising:

11. The method of claim 10 , wherein if the interference value of the interference is greater than a preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the first bandwidth.

12. The method of claim 11 , wherein if the interference value of the interference is less than or equal to the preset interference value, the bandwidth setting information indicates that the operating bandwidth of the terminal device is the aggregate bandwidth.

13. 13. The method according to claim 10, wherein the interference value is a ratio of the second channel quality indicator estimate to the first channel quality indicator estimate.

14. 13. The method of any one of claims 10 to 12, wherein both the first bandwidth and the second bandwidth correspond to a first operator and the third bandwidth corresponds to a second operator.

15. 13. The method of claim 10, further comprising sending, by the terminal device, capability information of the terminal device to the network device, the capability information indicating that the terminal device supports accessing the aggregated bandwidth.

16. receiving, by the terminal device, a channel state information reference signal CSI-RS of a cell corresponding to the first bandwidth from the network device; determining, by the terminal device, the first channel quality information based on the CSI-RS; The method of any one of claims 10 to 12, further comprising:

17. 13. The method of claim 10, further comprising receiving, by the terminal device, CSI-RS configuration information from the network device, wherein the CSI-RS configuration information includes CSI-RS configuration information corresponding to the first bandwidth and CSI-RS configuration information corresponding to the second bandwidth.

18. 13. The method of any one of claims 10 to 12, wherein the channel quality information comprises one or more of a received signal strength indication RSSI or a channel quality indication CQI.

19. A communication device comprising a unit adapted to carry out the method according to any one of claims 1 to 3.

20. A communication device comprising a unit adapted to carry out the method according to any one of claims 10 to 12.

21. 4. A computer-readable storage medium storing a computer program, the computer program including program instructions, the method of any one of claims 1 to 3 being performed when a communication device executes the program instructions.

22. 13. A computer-readable storage medium storing a computer program, the computer program including program instructions, the method of any one of claims 10 to 12 being performed when a communication device executes the program instructions.

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