Interference measurement method, device and equipment

Abstract

The present application discloses an interference measurement method, apparatus, and device, which belong to the field of communication technology. The interference measurement method of an embodiment of the present application includes: a first network-side device performs interference measurement based on a reference signal on at least one subband of a first resource; wherein the reference signal is sent by a second network-side device; and the first resource includes a transmission resource for the reference signal.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to an interference measurement method, device and equipment. Background Art

[0002] When a network deploys different base stations using different time division duplexing (TDD) configurations, different base stations may be in downlink (DL) transmission or uplink (UL) reception at the same time. In this case, the base station performing DL transmission will generate cross-link interference to the base station performing UL reception. For example, Figure 1 As shown, at time T1, network device 15 (base station) transmits downlink information to terminal 12 via subband 1 and receives uplink information from terminal 11 via subband 3. Network device 16, on the other hand, transmits downlink information to terminal 14 via subband 3 and receives uplink information from terminal 13 via subband 1. Therefore, network device 15's downlink transmission on subband 1 causes cross-link interference with network device 16's uplink reception. Similarly, network device 16's downlink transmission on subband 3 causes cross-link interference with network device 15's uplink reception.

[0003] Existing mechanisms rely on exchanging information between base stations, such as TDD configuration information, to avoid cross-link interference between different base stations. However, this information is typically static and does not reflect the transmission status of different frequency bands, making it ineffective in mitigating the impact of interference. Summary of the Invention

[0004] The embodiments of the present application provide an interference measurement method, apparatus, and device, which can timely understand the interference situation between network-side devices and ensure transmission performance.

[0005] In a first aspect, an interference measurement method is provided, comprising:

[0006] The first network-side device performs interference measurement based on the reference signal on at least one subband of the first resource;

[0007] The reference signal is sent by the second network side device;

[0008] The first resource includes a transmission resource of the reference signal.

[0009] In a second aspect, an interference measurement device is provided, comprising:

[0010] a processing module, configured to perform interference measurement based on a reference signal on at least one subband of the first resource;

[0011] The reference signal is sent by the second network side device;

[0012] The first resource includes a transmission resource of the reference signal.

[0013] In a third aspect, an interference measurement method is provided, including:

[0014] The second network side device sends a reference signal to the first network side device;

[0015] The reference signal is used for interference measurement of the first network side device on at least one subband of the first resource;

[0016] The first resource includes a transmission resource of the reference signal.

[0017] In a fourth aspect, an interference measurement device is provided, comprising:

[0018] A second sending module, configured to send a reference signal to the first network side device;

[0019] The reference signal is used for interference measurement of the first network side device on at least one subband of the first resource;

[0020] The first resource includes a transmission resource of the reference signal.

[0021] In the fifth aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect or the third aspect are implemented.

[0022] In a sixth aspect, a network-side device is provided, including a processor and a communication interface, wherein the processor is configured to perform interference measurement based on a reference signal on at least one subband of a first resource;

[0023] The reference signal is sent by the second network side device;

[0024] The first resource includes a transmission resource of the reference signal.

[0025] In a seventh aspect, a network-side device is provided, comprising a processor and a communication interface, wherein the communication interface is configured to send a reference signal to a first network-side device;

[0026] The reference signal is used for interference measurement of the first network side device on at least one subband of the first resource;

[0027] The first resource includes a transmission resource of the reference signal.

[0028] In an eighth aspect, an interference measurement system is provided, comprising: a first network side device and a second network side device, wherein the first network side device can be used to perform the steps of the interference measurement method as described in the first aspect, and the second network side device can be used to perform the steps of the interference measurement method as described in the third aspect.

[0029] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0030] In the tenth aspect, a chip is provided, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method described in the first aspect, or to implement the method described in the third aspect.

[0031] In the eleventh aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the method as described in the first aspect, or to implement the steps of the method as described in the third aspect.

[0032] In an embodiment of the present application, the first network side device can complete interference measurement on at least one subband of the first resource of the transmission resource including the reference signal sent by the second network side device, timely understand the transmission status on different frequency bands, and thereby reduce the impact of interference between full-duplex network side devices and ensure transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a block diagram of a wireless communication system;

[0034] Figure 2 is a flowchart of an interference measurement method according to an embodiment of the present application;

[0035] Figure 3 is a flowchart of an interference measurement method according to another embodiment of the present application;

[0036] Figure 4 is a schematic diagram of a module of an interference measurement device according to an embodiment of the present application;

[0037] Figure 5 is a module schematic diagram of an interference measurement device according to another embodiment of the present application;

[0038] Figure 6is a schematic structural diagram of a network-side device according to an embodiment of the present application;

[0039] Figure 7 It is a structural diagram of a network side device according to another embodiment of the present application. DETAILED DESCRIPTION

[0040] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0041] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0042] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to applications other than NR system applications, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0043] Figure 1A block diagram of a wireless communication system applicable to the embodiments of the present application is shown. The wireless communication system includes terminals 11, 12, 13, and 14, as well as network-side devices 15 and 16. Among them, taking the terminal 11 as an example, the terminal can be a mobile phone, a tablet personal computer, a laptop computer or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (PC), an ATM or a self-service machine, etc. The wearable device includes: a smart watch, a smart bracelet, a smart headset, a smart glass, a smart jewelry (smart bracelet, smart bracelet, smart ring, smart necklace, smart anklet, smart anklet, etc.), a smart wristband, a smart clothing, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function, or a radio access network unit. The access network device may include a base station, a WLAN access point, or a WiFi node, etc. The base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home B node, a home evolved B node, a transmitting and receiving point (TRP), or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0044] The interference measurement method, apparatus, and device provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0045] like Figure 2 As shown, the interference measurement method of the embodiment of the present application includes:

[0046] Step 201: A first network-side device performs interference measurement based on a reference signal on at least one subband of a first resource.

[0047] The reference signal is sent by the second network side device;

[0048] The first resource includes a transmission resource of the reference signal.

[0049] In this way, the first network side device will be able to complete interference measurement on at least one subband of the first resource of the transmission resource including the reference signal sent by the second network side device, timely understand the transmission status on different frequency bands, and thereby reduce the impact of interference between full-duplex network side devices and ensure transmission performance.

[0050] In this embodiment, the second network-side device may be one or more network-side devices, and the second network-side device may also transmit one or more reference signals. That is, the one or more network-side devices each transmit a reference signal to the first network-side device, and the first network-side device may perform interference measurement based on the reference signal transmitted by the corresponding network-side device. The second network-side device transmits the reference signal via the Uu air interface.

[0051] The first resource may be a time domain resource and / or a frequency domain resource. The at least one subband of the first resource is a frequency domain subband.

[0052] Optionally, the frequency domain subband can be understood as a resource block (RB), a subband (subband), or a bandwidth part (BandWidth Part, BWP).

[0053] It should be noted that the "transmission resources," "time domain resources," "frequency domain subbands," and "frequency domain resources" mentioned in the embodiments of this application may specifically be flexible duplex resources or full-duplex resources. For example, a portion of the time domain resources or a portion of the frequency domain bandwidth may be used as a flexible duplex resource or a full-duplex resource, and the reference signal sent by the network device may correspond to this portion of the flexible duplex resource or the full-duplex resource.

[0054] Flexible duplex resources or full-duplex resources can be resources of TDD or frequency division duplex (FDD) spectrum, such as TDD DL or UL or flexible resources. In addition to flexible duplex resources or full-duplex resources, other resources are not limited, such as half-duplex resources, existing FDD or TDD spectrum, etc.

[0055] Optionally, the reference signal includes at least one of the following:

[0056] Channel State Information Reference Signal CSI-RS;

[0057] Channel state information interference measurement signal CSI-IM;

[0058] Demodulation reference signal DMRS;

[0059] Synchronization signal block SSB.

[0060] In this way, the reference signal used for interference measurement can be at least one of the channel state information reference signal (CSI-RS); channel state information interference measurement signal (CSI-IM); demodulation reference signal (DMRS); and synchronization signal block (SSB).

[0061] Of course, to achieve more effective interference measurement, in this embodiment, it may be configured to perform interference measurement based only on a specific reference signal.

[0062] Optionally, the CSI-RS includes at least one of the following:

[0063] The CSI-RS corresponding to the target CSI-RS identifier;

[0064] CSI-RS corresponding to the first target time domain and / or frequency domain resource;

[0065] The CSI-RS corresponding to the first target network side device;

[0066] CSI-RS corresponding to the first target port;

[0067] A CSI-RS corresponding to the first target code division multiplexing CDM group;

[0068] CSI-RS corresponding to the target CSI-RS type;

[0069] CSI-RS corresponding to the precoding of the first target codebook;

[0070] CSI-RS corresponding to non-codebook precoding.

[0071] That is, the first network-side device only performs interference measurement on a specific CSI-RS.

[0072] Among them, the target CSI-RS identifier is one or more preset CSI-RS identifiers (IDs), such as preset CSI-RS ID1 and CSI-RS ID2. The first network side device performs interference measurement based on the CSI-RS corresponding to CSI-RS ID1 and CSI-RS ID2 on at least one subband of the first resource, and does not perform interference measurement based on the CSI-RS with other CSI-RS IDs transmitted on the first resource.

[0073] Similarly, the first target time domain and / or frequency domain resources can be one or more preset time domain resources, one or more frequency domain resources, or one or more time-frequency resources; the first target network side device, that is, the measurement object of the interference measurement, is one or more preset network side devices; the first target port is one or more preset ports; the first target CDM group is one or more preset CDM groups; the target CSI-RS type is one or more preset CSI-RS types; the first target codebook is one or more preset codebooks.

[0074] Among them, the CSI-RS type includes a first type for CSI measurement and a second type for beam measurement. Specifically, the first type of CSI-RS (CSI-RS for CSI) is used to measure the precoding matrix indicator (PMI), rank indicator (RI), channel quality indicator (CQI), and layer indicator (LI). The second type of CSI-RS (CSI-RS for beam) is used to measure the beam reference signal received power (RSRP) and signal to interference plus noise ratio (SINR), such as L1-RSRP and L1-SINR.

[0075] Optionally, the DMRS includes at least one of the following:

[0076] DMRS corresponding to the target physical downlink shared channel PDSCH;

[0077] DMRS corresponding to the target physical downlink control channel PDCCH;

[0078] DMRS corresponding to the second target port;

[0079] DMRS corresponding to the second target CDM group;

[0080] DMRS corresponding to the target DMRS sequence.

[0081] Among them, the target PDSCH is one or more preset PDSCHs; the first PDCCH is one or more preset PDCCHs; the second target port is one or more preset ports, which can be the same as or different from the first target port; the second target CDM group is one or more preset CDM groups, which can be the same as or different from the first target CDM group; the target DMRS sequence is one or more preset DMRS sequences.

[0082] Optionally, the SSB includes at least one of the following:

[0083] Configured as SSB for interference measurement;

[0084] All SSBs actually transmitted;

[0085] M SSBs among all SSBs actually transmitted, wherein the second signal indicators of the M SSBs are the highest among all the SSBs, and M is a positive integer.

[0086] The SSBs configured for interference measurement are one or more preset SSBs; all SSBs actually transmitted are SSBs actually transmitted on the first resource; and M SSBs among all SSBs actually transmitted are M SSBs actually transmitted on the first resource and have the highest second signal indicators, where the value of M can be preset. Here, the second signal indicator is an indicator such as RSRP or SINR of the SSB.

[0087] Optionally, the CSI-IM includes at least one of the following:

[0088] The CSI-IM corresponding to the target CSI-IM identifier;

[0089] CSI-IM corresponding to the second target time domain and / or frequency domain resource;

[0090] The CSI-IM corresponding to the second target network-side device;

[0091] CSI-IM corresponding to the third target port;

[0092] CSI-IM corresponding to the third target CDM group;

[0093] CSI-IM corresponding to the target CSI-IM type;

[0094] CSI-IM corresponding to the precoding of the second target codebook;

[0095] CSI-IM corresponding to non-codebook precoding.

[0096] Among them, the target CSI-IM ID is one or more preset CSI-IM IDs; the second target time domain and / or frequency domain resources can be one or more preset time domain resources, one or more frequency domain resources, or one or more time-frequency resources, which can be the same as or different from the first target time domain and / or frequency domain resources; the second target network side device, that is, the measurement object of the interference measurement, is one or more preset network side devices, which can be the same as or different from the first target network side device; the third target port is one or more preset ports, which can be the same as or different from the first port; the first target CDM group is one or more preset CDM groups, which can be the same as or different from the first target CDM group; the target CSI-IM type is one or more preset CSI-IM types; the second target codebook is one or more preset codebooks, which can be the same as or different from the first target codebook.

[0097] Thus, in this embodiment, the first network-side device may perform interference measurement on at least one subband of the first resource based only on one or more specific reference signals as shown above.

[0098] Of course, in this embodiment, a dedicated reference signal or sequence may also be set for interference measurement, which will not be described in detail here.

[0099] Furthermore, optionally, in this embodiment, the first resource is a flexible duplex resource.

[0100] Here, the flexible duplex resource refers to a frequency domain of the resource, which includes at least an uplink transmission subband and a downlink transmission subband for the first network-side device and the second network-side device, and may also include a flexible transmission subband (a subband that can be used for both uplink and downlink transmission). The first network-side device and the second network-side device are prone to interference on the flexible duplex resource.

[0101] Additionally, optionally, in this embodiment, before step 201, the method further includes:

[0102] The first network side device receives the transmission configuration information sent by the second network side device;

[0103] The transmission configuration information is used to indicate the transmission format of the second network side device in the first resource.

[0104] Here, the transmission format refers to the UL / DL configuration or frame format. This transmission format allows the subband configuration of the first resource to be understood, such as which subband is used for uplink transmission, which subband is used for downlink transmission, and which subband is used for flexible transmission. Furthermore, this transmission format allows the time domain configuration of the first resource to be understood, such as which time slots or symbols are used for uplink transmission, which time slots or symbols are used for downlink transmission, and which time slots or symbols are used for flexible transmission. This allows the first network-side device to learn the transmission format of the second network-side device on the first resource, thereby determining whether there is a transmission format conflict, deciding whether interference measurement is required, and determining the first resource and / or subband for interference measurement.

[0105] It should be understood that, in this embodiment, interference measurement is performed on at least one subband of the first resource. The at least one subband may be all subbands of the first resource, or may be one or part of the subbands of the first resource.

[0106] For example, the first network-side device performs interference measurement on a subband including a reference signal and a subband without a reference signal in the first resource.

[0107] Optionally, in this embodiment, the at least one sub-band is a preset sub-band.

[0108] In this way, the first network-side device performs interference measurement on a preset subband of the first resource. Even if there is no conflict between the transmission format of the first network-side device and the transmission format of the second network-side device on the preset subband, the interference measurement is still performed. The preset subband may be one or more subbands of the first resource.

[0109] Here, the preset subband may be determined by the first network device receiving configuration information from the second network device, or may be agreed upon by the first network device and the second network device through negotiation, or may be predefined.

[0110] Optionally, in this embodiment, the at least one sub-band is a sub-band in which a transmission format of the first network-side device conflicts with a transmission format of the second network-side device.

[0111] That is, the first network-side device performs interference measurement only on a subband on the first resource that conflicts with the transmission format of the second network-side device.

[0112] It should also be known that after the interference measurement, the first network side device can generate a cross-link measurement report based on the measurement results. Afterwards, the first network side device sends the cross-link measurement report to the second network side device so that the second network side device can understand the transmission status on different frequency bands. Subsequently, it can cooperate with the first network side device to perform interference removal processing to ensure transmission performance.

[0113] Optionally, in this embodiment, after step 201, the method further includes:

[0114] When a preset condition is met, the first network side device sends a cross-link measurement report to the second network side device;

[0115] The preset conditions include at least one of the following:

[0116] Measuring that the first signal indicator reaches a preset threshold value;

[0117] The sending period of the trigger measurement report is reached;

[0118] The first timer corresponding to the measurement report is in a running state or a non-running state;

[0119] receiving a cross-link interference measurement indication;

[0120] receiving a cross-link measurement report;

[0121] Receive a measurement report request.

[0122] That is, the first network-side device will send a cross-link measurement report to the second network-side device when at least one of the above trigger items is met.

[0123] Among them, the first signal indicator can be at least one of indicators such as RSRP, SINR, etc., which are not listed here one by one.

[0124] The transmission period of the triggered measurement report may be the transmission period of the triggered measurement report configured on the first network-side device or the transmission period of the triggered measurement report configured on the second network-side device. The first network-side device and the second network-side device may exchange their respective transmission periods. Furthermore, the transmission period of the triggered measurement report may be the same as the transmission period of the reference signal.

[0125] Among them, if the preset condition is that the first timer corresponding to the measurement report is in a running state, the first network side device sends a cross-link measurement report during the first timer running time period, and does not send a cross-link measurement report during the time period when the first timer is not running (the timer times out or is not started or the timer is not configured); if the preset condition is that the first timer corresponding to the measurement report is in a non-running state, the first network side device does not send a cross-link measurement report during the first timer running time period, and sends a cross-link measurement report during the time period when the first timer is not running (the timer times out or is not started or the timer is not configured). Here, the cross-link measurement report is sent during the time period when the first timer is not running, and a new timer (third timer) can be started based on other trigger items to send a cross-link measurement report during its running time period. The first timer can also set a trigger condition, such as measuring a third signal indicator (reference signal indicator, such as RSRP or SINR, etc.) reaching a preset value. Moreover, sending a cross-link measurement report during the first timer running time period, or sending a cross-link measurement report during the first timer non-running time period, includes at least one of the following:

[0126] The cross-link measurement report is sent at least once within the time period. If it is sent multiple times, it can be periodic or based on predefined rules;

[0127] Interference measurement is performed for a preset duration within the time period, and a cross-link measurement report is sent after the preset duration ends. Here, the preset duration may be a continuous duration or a discontinuous duration determined based on a predetermined rule.

[0128] Of course, the network configures different timers for reporting different reference signals or measurement types, and the durations of different timers may be different.

[0129] Among them, in the case where the first network side device receives a cross-link interference measurement indication, a cross-link measurement report or a measurement reporting request, it triggers the sending of a cross-link measurement report to the second network side device. The cross-link interference measurement indication, cross-link measurement report or measurement reporting request can be sent by the second network side device or by other network side devices.

[0130] Optionally, the cross-link measurement report includes at least one of the following:

[0131] Channel state information at layer 1;

[0132] Layer 3 channel state information.

[0133] For example, the channel state information of layer 1 includes L1-SINR; the channel state information of layer 3 includes L3-SINR, RSRP, RSRQ, RSSI, etc.

[0134] Specifically, L3 filtering is performed, and beam or beam group filtering is performed to obtain the signal-to-noise ratio SINR_filter(k) corresponding to the identifier k, SINR_filter(k)=(1-alpha)*SINR_filter(k-1)+alpha*SINR_current; wherein alpha is a weight factor, SINR_filter(k-1) is the signal-to-noise ratio corresponding to the identifier k-1 (which can also be understood as the previous signal-to-noise ratio of SINR_filter(k)), and SINR_current is the currently measured signal-to-noise ratio.

[0135] Considering the timeliness of the measurement, optionally, in this embodiment, step 201 includes:

[0136] The first network-side device performs interference measurement according to a second timer corresponding to the measurement, when the second timer is in a running state or a non-running state.

[0137] Here, the second timer is configured to enable the first network side device to perform interference measurement when the second timer is in a running state or a non-running state. The second timer can also be set to trigger a corresponding trigger condition, which will not be repeated here.

[0138] For the second network-side device, optionally, in this embodiment, the second network-side device includes at least one network-side device having transmission interference with the first network-side device.

[0139] Optionally, the at least one network-side device includes N network-side devices, where N is a positive integer;

[0140] The value of N is determined by at least one of the following:

[0141] Preset value;

[0142] The degree of interference with the first network-side device.

[0143] That is to say, the first network side device performs interference measurement on a number of network side devices equal to the preset value among the network side devices with which there is transmission interference, and N = the preset value; or the first network side device performs interference measurement on N network side devices among the network side devices with which there is transmission interference, and the degree of interference between the first network side device and the remaining network side devices is higher than that between the first network side device and the first network side device, and N is the network configuration.

[0144] Specifically, the first network device can configure the number or list of network-side devices that need to perform interference measurement for the network devices with which there is transmission interference, so that the first network-side device performs interference measurement on all network-side devices in the list; performs interference measurement on a preset number (preset value) of network-side devices in the list; and performs interference measurement on the N network nodes with the strongest interference in the list.

[0145] In this embodiment, after the first network side device sends the cross-link measurement report, it can perform interference coordination or interference avoidance processing, such as avoiding the use of resources that have greater interference; after the second network side device receives the cross-link measurement report sent by the first network side device, it can also perform interference coordination or interference avoidance processing, such as avoiding scheduling the use of resources that cause greater interference to other network side devices.

[0146] In this embodiment, the preset item may be pre-set by the first network side device and the second network side device through negotiation, or may be pre-configured by the first network side device or the second network side device.

[0147] The following describes the application of the method of the embodiment of the present application in conjunction with specific scenarios:

[0148] The network is configured with one or more flexible duplex resources (X-duplex resources), each of which is a continuous resource on the DL / UL bandwidth part (BandWidth Part, BWP).

[0149] The network node 1 (the first network-side device) and the network node 2 (the second network-side device) may exchange transmission configuration information on X-duplex resources, such as UL / DL configuration or frame format (XD-SFI).

[0150] The network node 1 sends a cross-link measurement report to the network node 2, which may be:

[0151] 1) For one X-duplex resource, measure the reference signal of network node 2 on all subbands and send the measurement results of all subbands;

[0152] 2) For a group of X-duplex resources, measure all subbands of each X-duplex resource and send the measurement results of each X-duplex resource;

[0153] 3) For one X-duplex resource, on the sub-band where the conflict occurs, measure the reference signal of the network node 2 and send the measurement result of the sub-band.

[0154] To sum up, according to the method of the embodiment of the present application, the first network side device will be able to complete interference measurement on at least one sub-band of the first resource of the transmission resource including the reference signal sent by the second network side device, timely understand the transmission status on different frequency bands, and thereby reduce the impact of interference between full-duplex network side devices and ensure transmission performance.

[0155] like Figure 3 As shown, an interference measurement method according to an embodiment of the present application includes:

[0156] Step 301: The second network side device sends a reference signal to the first network side device;

[0157] The reference signal is used for interference measurement of the first network side device on at least one subband of the first resource;

[0158] The first resource includes a transmission resource of the reference signal.

[0159] In this way, the second network side device sends a reference signal, so that the first network side device can complete interference measurement for the reference signal on at least one subband of the first resource of the transmission resource including the reference signal, and timely understand the transmission status on different frequency bands, thereby reducing the impact of interference between full-duplex network side devices and ensuring transmission performance.

[0160] Optionally, the reference signal includes at least one of the following:

[0161] Channel State Information Reference Signal CSI-RS;

[0162] Channel state information interference measurement signal CSI-IM;

[0163] Demodulation reference signal DMRS;

[0164] Synchronization signal block SSB.

[0165] Optionally, the first resource is a flexible duplex resource.

[0166] Optionally, the method further includes:

[0167] The second network side device sends transmission configuration information to the first network side device;

[0168] The transmission configuration information is used to indicate the transmission format of the second network side device in the first resource.

[0169] Optionally, after the second network side device sends the reference information to the first network side device, the method further includes:

[0170] The second network side device receives the cross-link measurement report sent by the first network side device when a preset condition is met;

[0171] The preset conditions include at least one of the following:

[0172] Measuring that the first signal indicator reaches a preset threshold value;

[0173] The sending period of the trigger measurement report is reached;

[0174] The first timer corresponding to the measurement report is in a running state or a non-running state;

[0175] receiving a cross-link interference measurement indication;

[0176] receiving a cross-link measurement report;

[0177] Receive a measurement report request.

[0178] Optionally, the cross-link measurement report includes at least one of the following:

[0179] Channel state information at layer 1;

[0180] Layer 3 channel state information.

[0181] Optionally, the at least one subband is a preset subband.

[0182] Optionally, the at least one sub-band is a sub-band in which a transmission format of the first network-side device conflicts with a transmission format of the second network-side device.

[0183] Optionally, the CSI-RS includes at least one of the following:

[0184] The CSI-RS corresponding to the target CSI-RS identifier;

[0185] CSI-RS corresponding to the first target time domain and / or frequency domain resource;

[0186] The CSI-RS corresponding to the first target network side device;

[0187] CSI-RS corresponding to the first target port;

[0188] A CSI-RS corresponding to the first target code division multiplexing CDM group;

[0189] CSI-RS corresponding to the target CSI-RS type;

[0190] CSI-RS corresponding to the precoding of the first target codebook;

[0191] CSI-RS corresponding to non-codebook precoding.

[0192] Optionally, the DMRS includes at least one of the following:

[0193] DMRS corresponding to the target physical downlink shared channel PDSCH;

[0194] DMRS corresponding to the target physical downlink control channel PDCCH;

[0195] DMRS corresponding to the second target port;

[0196] DMRS corresponding to the second target CDM group;

[0197] DMRS corresponding to the target DMRS sequence.

[0198] Optionally, the SSB includes at least one of the following:

[0199] Configured as SSB for interference measurement;

[0200] All SSBs actually transmitted;

[0201] M SSBs among all SSBs actually transmitted, wherein the second signal indicators of the M SSBs are the highest among all the SSBs, and M is a positive integer.

[0202] Optionally, the CSI-IM includes at least one of the following:

[0203] The CSI-IM corresponding to the target CSI-IM identifier;

[0204] CSI-IM corresponding to the second target time domain and / or frequency domain resource;

[0205] The CSI-IM corresponding to the second target network-side device;

[0206] CSI-IM corresponding to the third target port;

[0207] CSI-IM corresponding to the third target CDM group;

[0208] CSI-IM corresponding to the target CSI-IM type;

[0209] CSI-IM corresponding to the precoding of the second target codebook;

[0210] CSI-IM corresponding to non-codebook precoding.

[0211] It should be noted that this method is implemented in conjunction with the interference measurement method performed by the above-mentioned first network side device to achieve interference measurement. The implementation method of the embodiment of the interference measurement method performed by the above-mentioned first network side device is applicable to this method and can achieve the same technical effect, so it will not be repeated here.

[0212] The interference measurement method provided in the embodiment of the present application can be executed by an interference measurement device. In the embodiment of the present application, the interference measurement device provided in the embodiment of the present application is described by taking the interference measurement device executing the above interference measurement method as an example.

[0213] like Figure 4 As shown, the interference measurement device of an embodiment of the present application includes:

[0214] The processing module 410 is configured to perform interference measurement based on a reference signal on at least one subband of a first resource;

[0215] The reference signal is sent by the second network side device;

[0216] The first resource includes a transmission resource of the reference signal.

[0217] Optionally, the reference signal includes at least one of the following:

[0218] Channel State Information Reference Signal CSI-RS;

[0219] Channel state information interference measurement signal CSI-IM;

[0220] Demodulation reference signal DMRS;

[0221] Synchronization signal block SSB.

[0222] Optionally, the first resource is a flexible duplex resource.

[0223] Optionally, the device further comprises:

[0224] A first receiving module, configured to receive transmission configuration information sent by the second network side device;

[0225] The transmission configuration information is used to indicate the transmission format of the second network side device in the first resource.

[0226] Optionally, the at least one subband is a preset subband.

[0227] Optionally, the at least one sub-band is a sub-band in which a transmission format of the first network-side device conflicts with a transmission format of the second network-side device.

[0228] Optionally, the device further comprises:

[0229] A first sending module, configured to send a cross-link measurement report to the second network side device when a preset condition is met;

[0230] The preset conditions include at least one of the following:

[0231] Measuring that the first signal indicator reaches a preset threshold value;

[0232] The sending period of the trigger measurement report is reached;

[0233] The first timer corresponding to the measurement report is in a running state or a non-running state;

[0234] receiving a cross-link interference measurement indication;

[0235] receiving a cross-link measurement report;

[0236] Receive a measurement report request.

[0237] The cross-link measurement report includes at least one of the following:

[0238] Channel state information at layer 1;

[0239] Layer 3 channel state information.

[0240] Optionally, the first network side device performs interference measurement based on the reference signal on at least one subband of the first resource, including:

[0241] The first network-side device performs interference measurement according to a second timer corresponding to the measurement, when the second timer is in a running state or a non-running state.

[0242] Optionally, the second network-side device includes at least one network-side device having transmission interference with the first network-side device.

[0243] Optionally, the at least one network-side device includes N network-side devices, where N is a positive integer;

[0244] The value of N is determined by at least one of the following:

[0245] Preset value;

[0246] The degree of interference with the first network-side device.

[0247] Optionally, the CSI-RS includes at least one of the following:

[0248] The CSI-RS corresponding to the target CSI-RS identifier;

[0249] CSI-RS corresponding to the first target time domain and / or frequency domain resource;

[0250] The CSI-RS corresponding to the first target network side device;

[0251] CSI-RS corresponding to the first target port;

[0252] A CSI-RS corresponding to the first target code division multiplexing CDM group;

[0253] CSI-RS corresponding to the target CSI-RS type;

[0254] CSI-RS corresponding to the precoding of the first target codebook;

[0255] CSI-RS corresponding to non-codebook precoding.

[0256] Optionally, the DMRS includes at least one of the following:

[0257] DMRS corresponding to the target physical downlink shared channel PDSCH;

[0258] DMRS corresponding to the target physical downlink control channel PDCCH;

[0259] DMRS corresponding to the second target port;

[0260] DMRS corresponding to the second target CDM group;

[0261] DMRS corresponding to the target DMRS sequence.

[0262] Optionally, the SSB includes at least one of the following:

[0263] Configured as SSB for interference measurement;

[0264] All SSBs actually transmitted;

[0265] M SSBs among all SSBs actually transmitted, wherein the second signal indicators of the M SSBs are the highest among all the SSBs, and M is a positive integer.

[0266] Optionally, the CSI-IM includes at least one of the following:

[0267] The CSI-IM corresponding to the target CSI-IM identifier;

[0268] CSI-IM corresponding to the second target time domain and / or frequency domain resource;

[0269] The CSI-IM corresponding to the second target network-side device;

[0270] CSI-IM corresponding to the third target port;

[0271] CSI-IM corresponding to the third target CDM group;

[0272] CSI-IM corresponding to the target CSI-IM type;

[0273] CSI-IM corresponding to the precoding of the second target codebook;

[0274] CSI-IM corresponding to non-codebook precoding.

[0275] The device can complete interference measurement on at least one subband of the first resource of the transmission resource including the reference signal for the reference signal sent by the second network side device, timely understand the transmission status on different frequency bands, thereby reducing the impact of interference between full duplex network side devices and ensuring transmission performance.

[0276] It should be noted that the device is a device that applies the interference measurement method performed by the first network side device, which can achieve Figure 2 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0277] like Figure 5 As shown, an interference measurement device according to another embodiment of the present application includes:

[0278] A second sending module 510 is configured to send a reference signal to the first network side device;

[0279] The reference signal is used for interference measurement of the first network side device on at least one subband of the first resource;

[0280] The first resource includes a transmission resource of the reference signal.

[0281] Optionally, the reference signal includes at least one of the following:

[0282] Channel State Information Reference Signal CSI-RS;

[0283] Channel state information interference measurement signal CSI-IM;

[0284] Demodulation reference signal DMRS;

[0285] Synchronization signal block SSB.

[0286] Optionally, the first resource is a flexible duplex resource.

[0287] Optionally, the device further comprises:

[0288] A third sending module, configured to send transmission configuration information to the first network side device;

[0289] The transmission configuration information is used to indicate the transmission format of the second network side device in the first resource.

[0290] Optionally, the device further comprises:

[0291] A second receiving module is configured to receive a cross-link measurement report sent by the first network side device when a preset condition is met;

[0292] The preset conditions include at least one of the following:

[0293] Measuring that the first signal indicator reaches a preset threshold value;

[0294] The sending period of the trigger measurement report is reached;

[0295] The first timer corresponding to the measurement report is in a running state or a non-running state;

[0296] receiving a cross-link interference measurement indication;

[0297] receiving a cross-link measurement report;

[0298] Receive a measurement report request.

[0299] The device sends a reference signal so that the first network side device can complete interference measurement on at least one sub-band of the first resource of the transmission resource including the reference signal for the reference signal, timely understand the transmission status on different frequency bands, thereby reducing the impact of interference between full-duplex network side devices and ensuring transmission performance.

[0300] It should be noted that the device is a device that applies the interference measurement method performed by the second network side device, which can achieve Figure 3 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0301] It should also be noted that the interference measurement device in the embodiments of the present application can be a network-side device or a component of the network-side device, such as an integrated circuit or chip. The network-side device can be a base station or other device other than a base station. Exemplary base stations can include, but are not limited to, the types of base stations listed above, and are not specifically limited in the embodiments of the present application.

[0302] Optional, such as Figure 6As shown, an embodiment of the present application further provides a network-side device 600, including a processor 601 and a memory 602, wherein the memory 602 stores a program or instruction that can be executed on the processor 601. For example, when the network-side device 600 is a first network-side device, the program or instruction, when executed by the processor 601, implements the various steps of the embodiment of the interference measurement method performed by the first network-side device, and can achieve the same technical effect. When the network-side device 600 is a second network-side device, the program or instruction, when executed by the processor 601, implements the various steps of the embodiment of the interference measurement method performed by the second network-side device, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0303] An embodiment of the present application also provides a network-side device, comprising a processor and a communication interface, wherein the processor is configured to perform interference measurement based on a reference signal on at least one subband of a first resource; wherein the reference signal is sent by a second network-side device; and the first resource includes a transmission resource for the reference signal. The communication interface is configured to receive the reference signal. This network-side device embodiment corresponds to the first network-side device method embodiment described above, and each implementation process and implementation method of the above method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0304] An embodiment of the present application also provides a network-side device, comprising a processor and a communication interface, the communication interface being configured to send a reference signal to a first network-side device; wherein the reference signal is used by the first network-side device for interference measurement on at least one subband of a first resource; and the first resource includes a transmission resource for the reference signal. This network-side device embodiment corresponds to the second network-side device method embodiment described above, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0305] Specifically, the embodiment of the present application also provides a network side device. Figure 7 As shown, network-side device 700 includes an antenna 71, a radio frequency device 72, a baseband device 73, a processor 74, and a memory 75. Antenna 71 is connected to radio frequency device 72. In the uplink direction, radio frequency device 72 receives information via antenna 71 and sends the received information to baseband device 73 for processing. In the downlink direction, baseband device 73 processes the information to be transmitted and sends it to radio frequency device 72. Radio frequency device 72 processes the received information and then sends it through antenna 71.

[0306] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 73 , which includes a baseband processor.

[0307] The baseband device 73 may include, for example, at least one baseband board on which a plurality of chips are arranged, such as Figure 7 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 75 via a bus interface to call the program in the memory 75 to execute the network side device operations shown in the above method embodiment.

[0308] The network side device may further include a network interface 76, which is, for example, a common public radio interface (CPRI).

[0309] Specifically, the network side device 700 of the embodiment of the present invention further includes: instructions or programs stored in the memory 75 and executable on the processor 74, and the processor 74 calls the instructions or programs in the memory 75 to execute. Figure 4 The methods executed by each module shown, or Figure 5 The methods executed by the modules shown achieve the same technical effects and will not be described here in detail to avoid repetition.

[0310] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by the processor, the various processes of the interference measurement method embodiment performed by the first network side device or the interference measurement method embodiment performed by the second network side device are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0311] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0312] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the above-mentioned interference measurement method embodiment performed by the first network side device, or the various processes of the interference measurement method embodiment performed by the second network side device, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0313] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0314] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the above-mentioned interference measurement method embodiment performed by the first network side device, or the various processes of the interference measurement method embodiment performed by the second network side device, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0315] An embodiment of the present application also provides an interference measurement system, including: a first network-side device and a second network-side device, wherein the first network-side device can be used to execute the steps of the interference measurement method performed by the first network-side device, and the second network-side device can be used to execute the steps of the interference measurement method performed by the second network-side device.

[0316] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0317] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course, by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling the network-side device to execute the method described in each embodiment of the present application.

[0318] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An interference measurement method, characterized in that: include: The first network-side device performs interference measurement based on the reference signal on at least one subband of the first resource; The reference signal is sent by the second network side device; The first resource includes a transmission resource of the reference signal; Before the first network side device performs interference measurement based on the reference signal on at least one subband of the first resource, the first network side device also includes: the first network side device receives transmission configuration information sent by the second network side device; wherein the transmission configuration information is used to indicate the transmission format of the second network side device on the first resource, and the first resource includes time domain resources and frequency domain resources.

2. The method according to claim 1, characterized in that The first resource is a flexible duplex resource.

3. The method according to claim 1, characterized in that The at least one sub-band is a sub-band in which a transmission format of the first network-side device conflicts with a transmission format of the second network-side device.

4. The method according to claim 1, wherein After the first network side device performs interference measurement based on the reference signal on at least one subband of the first resource, the first network side device further includes: When a preset condition is met, the first network side device sends a cross-link measurement report to the second network side device; The preset conditions include at least one of the following: measuring that the first signal indicator reaches a preset threshold value; The sending cycle of the trigger measurement report is reached; The first timer corresponding to the measurement report is in a running state or a non-running state; receiving a cross-link interference measurement indication; receiving a cross-link measurement report; Receive a measurement report request.

5. The method according to claim 4, characterized in that The cross-link measurement report includes at least one of the following: Channel state information at layer 1; Layer 3 channel state information.

6. The method according to claim 1, characterized in that The first network-side device performs interference measurement based on a reference signal on at least one subband of the first resource, including: The first network-side device performs interference measurement according to a second timer corresponding to the measurement, when the second timer is in a running state or a non-running state.

7. The method according to claim 1, characterized in that The reference signal includes at least one of the following: Channel State Information Reference Signal CSI-RS; Channel state information interference measurement signal CSI-IM; Demodulation reference signal DMRS; Synchronization signal block SSB.

8. The method according to claim 7, characterized in that The CSI-RS includes at least one of the following: The CSI-RS corresponding to the target CSI-RS identifier; CSI-RS corresponding to the first target time domain and / or frequency domain resource; The CSI-RS corresponding to the first target network side device; CSI-RS corresponding to the first target port; The CSI-RS corresponding to the first target code division multiplexing CDM group; CSI-RS corresponding to the target CSI-RS type; CSI-RS corresponding to the precoding of the first target codebook; CSI-RS corresponding to non-codebook precoding.

9. The method according to claim 7, characterized in that The DMRS includes at least one of the following: DMRS corresponding to the target physical downlink shared channel PDSCH; DMRS corresponding to the target physical downlink control channel PDCCH; DMRS corresponding to the second target port; DMRS corresponding to the second target CDM group; DMRS corresponding to the target DMRS sequence.

10. The method according to claim 7, characterized in that The SSB includes at least one of the following: Configured as SSB for interference measurement; All SSBs actually transmitted; M SSBs among all SSBs actually transmitted, wherein the second signal indicators of the M SSBs are the highest among all the SSBs, and M is a positive integer.

11. The method according to claim 7, characterized in that The CSI-IM includes at least one of the following: The CSI-IM corresponding to the target CSI-IM identifier; CSI-IM corresponding to the second target time domain and / or frequency domain resource; The CSI-IM corresponding to the second target network-side device; CSI-IM corresponding to the third target port; CSI-IM corresponding to the third target CDM group; CSI-IM corresponding to the target CSI-IM type; CSI-IM corresponding to the precoding of the second target codebook; CSI-IM corresponding to non-codebook precoding.

12. An interference measurement method, characterized in that: include: The second network side device sends a reference signal to the first network side device; The reference signal is used for interference measurement of the first network side device on at least one subband of the first resource; The first resource includes a transmission resource of the reference signal; It also includes: the second network side device sends transmission configuration information to the first network side device; wherein, the transmission configuration information is used to indicate the transmission format of the second network side device in the first resource, and the first resource includes time domain resources and frequency domain resources.

13. The method according to claim 12, characterized in that The first resource is a flexible duplex resource.

14. The method according to claim 12, characterized in that After the second network side device sends the reference information to the first network side device, the method further includes: The second network side device receives the cross-link measurement report sent by the first network side device when a preset condition is met; The preset conditions include at least one of the following: measuring that the first signal indicator reaches a preset threshold value; The sending cycle of the trigger measurement report is reached; The first timer corresponding to the measurement report is in a running state or a non-running state; receiving a cross-link interference measurement indication; receiving a cross-link measurement report; Receive a measurement report request.

15. The method according to claim 14, characterized in that The cross-link measurement report includes at least one of the following: Channel state information at layer 1; Layer 3 channel state information.

16. The method according to claim 12, characterized in that The reference signal includes at least one of the following: Channel State Information Reference Signal CSI-RS; Channel state information interference measurement signal CSI-IM; Demodulation reference signal DMRS; Synchronization signal block SSB.

17. An interference measurement device, characterized in that: include: a processing module, configured to perform interference measurement based on a reference signal on at least one subband of the first resource; The reference signal is sent by the second network side device; The first resource includes a transmission resource of the reference signal; Also includes: A first receiving module, configured to receive transmission configuration information sent by the second network side device; The transmission configuration information is used to indicate the transmission format of the second network side device in the first resource, and the first resource includes time domain resources and frequency domain resources.

18. The device according to claim 17, characterized in that Also includes: A first sending module, configured to send a cross-link measurement report to the second network side device when a preset condition is met; The preset conditions include at least one of the following: measuring that the first signal indicator reaches a preset threshold value; The sending cycle of the trigger measurement report is reached; The first timer corresponding to the measurement report is in a running state or a non-running state; receiving a cross-link interference measurement indication; receiving a cross-link measurement report; Receive a measurement report request.

19. An interference measurement device, characterized in that: include: A second sending module, configured to send a reference signal to the first network side device; The reference signal is used for interference measurement of the first network side device on at least one subband of the first resource; The first resource includes a transmission resource of the reference signal; Also includes: A third sending module, configured to send transmission configuration information to the first network side device; The transmission configuration information is used to indicate the transmission format of the second network side device in the first resource, and the first resource includes time domain resources and frequency domain resources.

20. The device according to claim 19, characterized in that Also includes: A second receiving module is configured to receive a cross-link measurement report sent by the first network side device when a preset condition is met; The preset conditions include at least one of the following: measuring that the first signal indicator reaches a preset threshold value; The sending cycle of the trigger measurement report is reached; The first timer corresponding to the measurement report is in a running state or a non-running state; receiving a cross-link interference measurement indication; receiving a cross-link measurement report; Receive a measurement report request.

21. A network side device, characterized in that: The device comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the device implements the interference measurement method according to any one of claims 1 to 11, or implements the steps of the interference measurement method according to any one of claims 12 to 16.

22. A readable storage medium, characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the interference measurement method according to any one of claims 1 to 11 is implemented, or the steps of the interference measurement method according to any one of claims 12 to 16 are implemented.

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