Interference measurement method, first network device and terminal device

Abstract

The present invention provides an interference measurement method, a first network device and a terminal device, and relates to the field of communication technology. The method includes: configuring a channel state information interference measurement CSI-IM resource; sending the CSI-IM to the terminal device according to the CSI-IM resource; determining the interference resource according to the channel state information CSI fed back by the terminal device, and the interference resource includes at least one of the following: an interference symbol; an interference subcarrier. The first network device may first configure the CSI-IM resource, send the CSI-IM to the terminal device based on the CSI-IM resource, and then determine the interference resource according to the CSI fed back by the terminal device, and the determined interference resource may include at least one of an interference symbol and an interference subcarrier, that is, interference with a symbol granularity and / or a subcarrier granularity may be determined, that is, the measurement granularity may be to a symbol and / or a subcarrier, thereby improving the accuracy of the interference measurement.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to an interference measurement method, a first network device and a terminal device. Background Art

[0002] Currently, during the communication between network equipment and terminal equipment, downlink interference measurement can be performed by the terminal equipment and the measurement results can be uploaded to the network equipment. The network equipment can configure resources according to the measurement results to reduce interference and improve communication quality.

[0003] However, currently, in the interference measurement process, what is usually measured is the interference time slot, that is, the minimum granularity of the current interference measurement scheme is the time slot, and the interference measurement granularity is large, which easily leads to poor accuracy of interference measurement. Summary of the invention

[0004] The embodiment of the present invention provides an interference measurement method, a first network device and a terminal device to solve the problem of poor accuracy of existing interference measurement weights.

[0005] To solve the above technical problems, the present invention is achieved as follows:

[0006] In a first aspect, an embodiment of the present invention provides an interference measurement method, which is applied to a first network device, and the method includes:

[0007] Configure channel state information interference measurement CSI-IM resources;

[0008] Sending the CSI-IM to the terminal device according to the CSI-IM resource;

[0009] Determine interference resources according to the channel state information CSI fed back by the terminal device, where the interference resources include at least one of the following:

[0010] Interference symbols;

[0011] Interfering subcarrier.

[0012] In a second aspect, an embodiment of the present invention provides another interference measurement method, which is applied to a terminal device, and the method includes:

[0013] Receiving a CSI-IM sent by a first network device according to a channel state information interference measurement CSI-IM resource;

[0014] In response to the CSI-IM, interference detection is performed on the CSI-IM resource, and CSI is sent to the first network device, where the CSI is used by the first network device to determine an interference resource, where the interference resource includes at least one of the following:

[0015] Interference symbols;

[0016] Interfering subcarrier.

[0017] In a third aspect, an embodiment of the present invention provides a first network device, wherein the first network device includes:

[0018] A first configuration module is used to configure a channel state information interference measurement CSI-IM resource;

[0019] A first sending module, configured to send the CSI-IM to a terminal device according to the CSI-IM resource;

[0020] The first determination module is configured to determine an interference resource according to the channel state information CSI fed back by the terminal device, where the interference resource includes at least one of the following:

[0021] Interference symbols;

[0022] Interfering subcarrier.

[0023] In a fourth aspect, an embodiment of the present invention provides a terminal device, the terminal device comprising:

[0024] A first receiving module, configured to receive a CSI-IM sent by a first network device according to a channel state information interference measurement CSI-IM resource;

[0025] A second sending module is configured to perform interference detection on the CSI-IM resource in response to the CSI-IM, and send CSI to the first network device, where the CSI is used by the first network device to determine an interference resource, where the interference resource includes at least one of the following:

[0026] Interference symbols;

[0027] Interfering subcarrier.

[0028] In a fifth aspect, an embodiment of the present invention provides a first network device, including a transceiver and a processor.

[0029] The processor is used to configure a channel state information interference measurement CSI-IM resource;

[0030] The transceiver is used to send the CSI-IM to the terminal device according to the CSI-IM resource;

[0031] The processor is configured to determine an interference resource according to channel state information CSI fed back by the terminal device, where the interference resource includes at least one of the following:

[0032] Interference symbols;

[0033] Interfering subcarrier.

[0034] In a sixth aspect, an embodiment of the present invention provides a terminal device, including a transceiver and a processor.

[0035] The transceiver is used to receive the CSI-IM sent by the first network device according to the channel state information interference measurement CSI-IM resource;

[0036] The transceiver is configured to perform interference detection on the CSI-IM resource in response to the CSI-IM, and send CSI to the first network device, where the CSI is used by the first network device to determine an interference resource, where the interference resource includes at least one of the following:

[0037] Interference symbols;

[0038] Interfering subcarrier.

[0039] In a seventh aspect, an embodiment of the present invention provides a first network device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the interference measurement method described in the first aspect above.

[0040] In an eighth aspect, an embodiment of the present invention provides a terminal device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the interference measurement method described in the second aspect above.

[0041] In the ninth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the interference measurement method described in the first aspect are implemented; or when the computer program is executed by a processor, the steps of the interference measurement method described in the second aspect are implemented.

[0042] In an embodiment of the present application, the first network device may first configure CSI-IM resources, send CSI-IM to the terminal device based on the CSI-IM resources, and then determine the interference resources according to the CSI fed back by the terminal device, and the determined interference resources may include at least one of interference symbols and interference subcarriers, that is, interference with symbol granularity and / or subcarrier granularity can be determined, that is, the measurement granularity can be to symbols and / or subcarriers, thereby improving the accuracy of interference measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0044] Figure 1 is a flow chart of an interference measurement method provided by an embodiment of the present invention;

[0045] Figure 2 This is one of the resource configuration principle diagrams in an interference measurement method provided by an embodiment of the present invention;

[0046] Figure 3 This is the second schematic diagram of resource configuration in an interference measurement method provided by an embodiment of the present invention;

[0047] Figure 4 This is the third schematic diagram of resource configuration in an interference measurement method provided by an embodiment of the present invention;

[0048] Figure 5 This is a fourth schematic diagram of resource configuration in an interference measurement method provided by an embodiment of the present invention;

[0049] Figure 6 This is the fifth schematic diagram of resource configuration in an interference measurement method provided by an embodiment of the present invention;

[0050] Figure 7 This is the sixth resource configuration principle diagram in an interference measurement method provided by an embodiment of the present invention;

[0051] Figure 8 is a flow chart of another interference measurement method provided by an embodiment of the present invention;

[0052] Fig. 9 is a structural diagram of a first network device provided by an embodiment of the present invention;

[0053] Fig.10 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present invention;

[0054] Fig.11 is a structural diagram of a first network device provided by an embodiment of the present invention;

[0055] Fig.12 It is a structural diagram of a terminal device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In an embodiment of the present invention, an interference measurement method, a repeated transmission control method and related equipment are proposed to solve the problem that in the existing repeated transmission scheme, the transmitting end cannot distinguish the number of times the target receiving end correctly demodulates the physical channel, making it difficult to reasonably adjust the number of repeated transmissions of subsequent physical channels, which easily causes a waste of physical resources.

[0058] See also Figure 1 , Figure 1 is a flowchart of an interference measurement method provided by an embodiment of the present invention, which is used for a first network device, such as Figure 1 As shown, the method comprises the following steps:

[0059] Step 101: configure channel state information interference measurement CSI-IM resources.

[0060] CSI-IM stands for Channel State Information Interreference Measurement, which is called channel state information interference measurement in Chinese. In this embodiment, CSI-IM resources may be configured first, which may include CSI-IM time domain resources and CSI-IM frequency domain resources. The first network device may be a network device such as a base station.

[0061] Step 102: Send the CSI-IM to the terminal device according to the CSI-IM resources.

[0062] After the CSI-IM resources are configured, the CSI-IM can be sent to the terminal device based on the configured CSI-IM resources, and the CSI-IM is used for interference measurement.

[0063] Step 103: Determine interference resources according to the channel state information CSI fed back by the terminal device.

[0064] The interference resource includes at least one of the following:

[0065] Interference symbols;

[0066] Interfering subcarrier.

[0067] CSI stands for Channel State Information, which is called channel state information in Chinese. After receiving the CSI-IM sent by the first network device, the terminal device performs interference measurement and can report CSI to the first network device. In this way, the first network device can obtain the interference level based on the RE level based on CSI, and can determine the interference symbol and / or interference subcarrier. It should be noted that RE stands for Resource Element, which is called resource unit in Chinese. A subcarrier in frequency and a symbol in time domain are called RE.

[0068] In an embodiment of the present application, the first network device may first configure CSI-IM resources, send CSI-IM to the terminal device based on the CSI-IM resources, and then determine the interference resources according to the CSI fed back by the terminal device, and the determined interference resources may include at least one of interference symbols and interference subcarriers, that is, interference with symbol granularity and / or subcarrier granularity can be determined, that is, the measurement granularity can be to symbols and / or subcarriers, thereby improving the accuracy of interference measurement.

[0069] In one embodiment, before determining the interference resource according to the channel state information CSI fed back by the terminal device, it also includes: sending first indication information to the terminal device, where the first indication information is used to indicate interference feedback based on CSI-IM.

[0070] It should be noted that the first indication information can be sent to the terminal device together with the CSI-IM, and can be used to indicate interference feedback based on the CSI-IM. In this way, after the terminal device performs interference measurement based on the CSI-IM, it can provide interference feedback to the first network device, that is, feedback CSI. That is, in this embodiment, by sending CSI-IM and the first indication information to the terminal device, the terminal device performs interference detection based on the CSI-IM, and feeds back CSI to the first network device based on the first indication information, that is, interference feedback is achieved.

[0071] Alternatively, in another embodiment, before determining the interference resource based on the channel state information CSI fed back by the terminal device, it also includes: configuring CSI-RS resources, the CSI-RS resources correspond to the CSI-IM resources; based on the CSI-RS resources, sending CSI-RS to the terminal device, wherein the CSI is the CSI that the terminal device responds to the CSI-IM and CSI-RS feedback.

[0072] CSI-RS is Channel State Information Reference Signal, which is called channel state information reference signal in Chinese. That is, in this embodiment, CSI-IM is used together with CSI-RS, interference measurement is performed through CSI-IM, and CSI is reported to the first network device in combination with CSI-RS. The first network device obtains the interference level of RE level based on the CSI fed back by the terminal device, thereby improving the accuracy of interference measurement.

[0073] As an example, the existing protocol defines "the number of CSI-RS resource for channel measurement equals to the number of CSI-IM resource". The number of CSI-RS and CSI-IM resource configurations is the same mainly for measuring channel information. In order to display the interference level, the same CSI-RS resource can be used to feedback CSI, that is, multiple CSI-IM resources correspond to one CSI-RS resource, which makes the interference assessment more accurate. In addition, for the interference feedback RE granularity, there are many CSI-IM configurations. Configuring the same number of CSI-RS resources will result in excessive overhead. A set of CSI-RS resources can be configured to correspond to multiple sets of CSI-IMs for co-frequency networking interference measurement and CSI feedback, which improves the feedback accuracy, but still needs to feedback 4*36bit CSI. Or the CSI-IM configuration is defined as 1 set of CSI-IM configurations, including 36 resources, corresponding to 1 set of CSI-RS resources, and the output is 1 channel quality report reflecting interference, reducing the CSI feedback overhead to 4bit.

[0074] It is recommended to configure CSI-RS to correspond to multiple sets of CSI-IM resources one by one, and the CSI-RS configuration points to the same resource, or configure a set of CSI-IM to contain 36 resources and feedback a channel quality report reflecting the interference.

[0075] In one embodiment, before configuring the channel state information interference measurement CSI-IM resources, the method further includes:

[0076] Determine the interference time slot and the interference period according to the determined ACK ratio and / or the negative ACK ratio in the preset historical time period;

[0077] The configuration of the channel state information interference measurement CSI-IM resource includes:

[0078] Based on the interference time slot and the interference period, the CSI-IM resources are configured, wherein the interference symbol is a symbol in the interference time slot.

[0079] ACK is Acknowledgement, which can be called a confirmed response or a positive determination, and NACK is Negative ACKnowledge, which can be called a negative response or a negative determination. That is, in this embodiment, the first network device can be based on the proportion of the number of ACKs received by the terminal device in the preset historical time period to the total number of responses (i.e., the ACK ratio) and / or the proportion of the number of NACKs received in the preset historical time period to the total number of responses (i.e., the NACK ratio). The total number of responses is the sum of the number of ACKs and the number of NACKs received in the preset historical time period. It can be understood that the smaller the ACK ratio, the smaller the possibility of interference, and the larger the NACK ratio, the greater the possibility of interference. As an example, if the ACK ratio in the time slot is less than the first preset value or the NACK ratio is greater than the second preset value, it is determined that the time slot is interfered and is an interference time slot. If interference occurs in the time slot every certain time interval, it is confirmed that it is periodic interference, and the duration of the interval is the interference period, that is, interference occurs every interference period. Among them, it should be noted that the first preset value can be greater than the second preset value.

[0080] That is, the time domain position configuration obtains the interference time slot and period configuration according to the terminal device ACK and / or NACK feedback. The interference is the time slot and period, and the frequency domain can be configured as a random 4 to 6 PRB positions of the full bandwidth, and the frequency domain position can be randomly adjusted by frequency hopping. After the terminal device reports the interference, the CSI-IM configuration can be semi-statically canceled through RRC reconfiguration to save overhead; if no interference is tested, the frequency hopping test of the next period can be reconfigured; when the interference changes, the CSI-IM can be semi-statically configured through RRC reconfiguration.

[0081] In this embodiment, after determining the interference time slot and the interference, the CSI-IM resource can be configured according to the interference time slot and the interference period. It can be understood that the CSI-IM resource is configured on the basis of the interference time slot, and then the interference resource can be determined according to the channel state information CSI fed back by the terminal device. The interference resource may include an interference symbol, and the interference symbol is a symbol belonging to the interference time slot. That is, in this embodiment, based on the interference time slot, the interference symbol can be further determined to improve the interference measurement accuracy and the interference measurement accuracy.

[0082] In one embodiment, configuring CSI-IM resources based on interference time slots and interference periods includes:

[0083] In an interference time slot of each subframe of the multiple subframes, a starting subcarrier in N RBs is configured, an interference period is spaced between two adjacent subframes in the multiple subframes, and the starting subframe in the multiple subframes is a subframe in which interference occurs for the first time within a preset historical time period, which is determined by determining an ACK ratio and / or a NACK ratio, and N is an integer greater than 1;

[0084] Configure a first subcarrier offset, where the first subcarrier offset is used to determine a subcarrier in each of the N RBs whose offset from the corresponding starting subcarrier is a positive integer multiple of the first subcarrier offset, where the CSI-IM resource includes a target resource in the N RBs, and the target resource of the i-th RB includes M i A set of CSI-IM resources, any set of CSI-IM resources includes two consecutive subcarriers on two consecutive symbols of the interference time slot, or includes four consecutive subcarriers on one symbol of the interference time slot, the i-th RB is any RB among N RBs, i is a positive integer, i≤N, M i is an integer greater than 1;

[0085] Among them, M i The two consecutive symbols in the first set of CSI-IM resources in the set of CSI-IM resources are the second symbol and the third symbol of the interference time slot, and the first subcarrier in the two consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the i-th RB, M i -1 The offset between the first subcarrier in the CSI-IM resource set and the starting subcarrier of the i-th RB is an integer multiple of the first subcarrier offset, and M i The offset between the first subcarriers of any two adjacent sets of CSI-IM resources in a set of CSI-IM resources is the first subcarrier offset, M i The offset between the first symbols of any two adjacent sets of CSI-IM resources in a set of CSI-IM resources is 2; or,

[0086] M i A symbol in the first set of CSI-IM resources in the set of CSI-IM resources is the second symbol of the interference time slot, the first subcarrier of the four consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the i-th RB, M i -1 The offset between the first subcarrier in the CSI-IM resource set and the starting subcarrier of the i-th RB is an integer multiple of the first subcarrier offset, and M i The offset between the first subcarriers of any two adjacent sets of CSI-IM resources in a set of CSI-IM resources is the first subcarrier offset, M i The offset between the first symbols of any two adjacent sets of CSI-IM resources in a set of CSI-IM resources is 1.

[0087] It should be noted that an RB may include 14 symbols and 12 subcarriers. The symbols are numbered from 0 to 13. The 0th symbol and the 1st symbol can be used to transmit PDCCH. CSI-RS / TRS and CSI-IM are not configured with the same time slot symbol as PDCCH. Therefore, the time domain configuration of CSI-IM resources is from the 2nd symbol to the 13th symbol. In addition, it should be noted that, for two adjacent RBs among the above-mentioned N RBs, if a set of CSI-IM resources are configured in the same time slot in the two adjacent RBs, the offset between the first subcarriers between the two sets of CSI-IM resources in the same time slot in the two adjacent RBs can also be the first subcarrier offset. If there is an RB without CSI-IM resources configured in the same time slot in the two adjacent RBs, for example, the jth RB is configured with a set of CSI-IM resources in a certain time slot, but the j+1th RB is not configured with a set of CSI-IM resources in the time slot, then the offset between the first subcarriers between the set of CSI-IM resources configured in the j+2th RB in the time slot and the set of CSI-IM resources configured in the jth RB in the time slot can also be the first subcarrier offset, where j is a positive integer and j+1 is less than N. It should be noted that, if the subcarrier in a set of CSI-IM resources in a time slot in an RB is increased by the first subcarrier offset and is greater than the sequence number of the maximum subcarrier of the RB, the offset between the first subcarrier of a set of CSI-IM resources in the time slot of the RB and the first subcarrier of a set of CSI-IM resources whose first subcarrier is the first subcarrier of the set of CSI-IM resources increased by the first subcarrier offset and then subtracted from the sequence number of the maximum subcarrier (for example, 12) is the first subcarrier offset.

[0088] like Figure 2 As shown, the first subcarrier offset is zero, N is 6, the number of CSI-IM sets in each RB is 6, the consecutive two symbols in the first set of 6 sets of CSI-IM resources in any RB are the 2nd symbol and the 3rd symbol of the interference time slot, the first subcarrier of the two consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the RB, the offset between the first subcarrier in the remaining 5 sets of CSI-IM resources and the starting subcarrier of the RB is an integer multiple of the first subcarrier offset, and the offset between the first subcarriers between any two adjacent sets of CSI-IM resources in the 6 sets of CSI-IM resources is the first subcarrier offset, and the offset between the first symbols of any two adjacent sets of CSI-IM resources in the 6 sets of CSI-IM resources is 2.

[0089] That is, in the configuration of this example, the CSI-IM frequency domain BWP is configured as 6 PRBs (to meet the requirement of occupying all time slots), the time domain configuration is 2 to 13, to achieve full time domain configuration, the frequency domain configuration is the starting frequency band, and a subcarrier-offset value is added. The CSI-RS resources corresponding to the CSI-IM configuration (CSI-RS can point to the same time-frequency domain resources), the first network device determines the interference symbol according to the CSI reported by the terminal device.

[0090] In this example, the frequency configuration method is that the CSI-IM configuration frequency domain starting position is the {0, 2, 4, 6, 8, 10} (Type I) or {0, 4, 8} (Type II) subcarrier of the PRB. In order to reflect the interference of the symbol, the CSI-IM needs to be deployed in a scattered manner to meet the distribution of the entire RB, that is, the frequency domain needs to be distributed in different subcarrier positions in different RBs. Adding a subcarrier-offset value, through the frequency cycle of the same set of CSI-IM, to meet the symbol interference test requirements, reducing the number of CSI-IM configuration sets, such as Figure 2 , the maximum configuration of TypeI is 14. To improve the measurement accuracy, you can reduce the subcarrier-offset value and encrypt the CSI-IM. Through the subcarrier-offset configuration, the number of CSI-IM sets can be reduced to 1 / 6, and the CSI reporting bits are reduced from 4*36bit to 4*6bit (TypeI). Figure 2 According to the configuration in , the remaining resources have good continuity and can continue to be used for PDSCH data transmission.

[0091] Symbol-level interference assessment example: 6 sets of CSI-IMs correspond to 6 sets of the same CSI-RS resources. In CSI feedback, the RSRP is the same. The CQI reported by CSI can reflect the interference level of each set of CSI-IMs. The base station confirms the interference time slot based on the interference level fed back by CQI, and silences the PDSCH transmission of the entire symbol (non-slot) with full bandwidth to reduce interference and overhead. Compared with the whole time slot silence, symbol silence reduces the overhead from 5% (or higher, multiple neighboring interference) to 0.35%.

[0092] like Figure 3 As shown, the first subcarrier offset is 2, N is 6, and the number of sets of CSI-IM resources between RBs can be different or the same, for example, Figure 3As shown, the number of CSI-IM resources in the 1st RB is 6, the number of CSI-IM resources in the 2nd RB is 5, the number of CSI-IM resources in the 3rd RB is 4, the number of CSI-IM resources in the 4th RB is 5, the number of CSI-IM resources in the 5th RB is 5, and the number of CSI-IM resources in the 6th RB is 5. The two consecutive symbols in the first set of multiple CSI-IM resources in any RB are the second and third symbols of the interference time slot, the first subcarrier in the two consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the RB, the offset between the first subcarrier in at least one remaining set of CSI-IM resources in the RB and the starting subcarrier of the RB is an integer multiple of the first subcarrier offset, and the offset between the first subcarriers between any two adjacent sets of CSI-IM resources in the multiple sets of CSI-IM resources is the first subcarrier offset, and the offset between the first symbols of any two adjacent sets of CSI-IM resources in the multiple sets of CSI-IM resources is 2. Figure 3 , the maximum configuration of Type II is 16, and the CSI reporting bits are reduced from 4*60 bits to 4*12 bits (Type II).

[0093] like Figure 4 As shown, the first subcarrier offset is zero, N is 6, the number of CSI-IM sets in each RB is 12, a symbol in the first set of 12 CSI-IM resources in any RB is the second symbol of the interference slot, the first subcarrier of the four consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the RB, the offset between the first subcarrier in the remaining 11 sets of CSI-IM resources and the starting subcarrier of the RB is an integer multiple of the first subcarrier offset, and the offset between the first subcarriers between any two adjacent sets of CSI-IM resources in the 12 sets of CSI-IM resources is the first subcarrier offset, and the offset between the first symbols of any two adjacent sets of CSI-IM resources in the 12 sets of CSI-IM resources is 1.

[0094] like Figure 5 As shown, the first subcarrier offset is 4, N is 6, a symbol in the first set of 12 sets of CSI-IM resources in any RB is the second symbol of the interference time slot, the first subcarrier of the four consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the RB, and the offset between the first subcarrier in the remaining 11 sets of CSI-IM resources and the starting subcarrier of the RB is an integer multiple of the first subcarrier offset, and the offset between the first subcarriers between any two adjacent sets of CSI-IM resources in the 12 sets of CSI-IM resources is the first subcarrier offset, and the offset between the first symbols of any two adjacent sets of CSI-IM resources in the 12 sets of CSI-IM resources is 1.

[0095] That is, in this embodiment, the frequency is configured as the starting frequency band, that is, the starting subcarriers of N RBs are configured, and a first subcarrier offset (subcarrier-offset) is added. The first subcarrier offset can be used to determine the subcarrier in each RB whose offset from the corresponding starting subcarrier is a positive integer multiple of the first subcarrier offset. In this way, combined with the starting subcarrier of each RB, multiple sets of CSI-IM resources in each RB can be determined. In this embodiment, a first subcarrier offset is added, and the frequency cycle of the same set of CSI-IM meets the symbol interference test requirements, which can reduce the number of CSI-IM configuration sets.

[0096] In one embodiment, configuring CSI-IM resources based on interference time slots and interference periods includes:

[0097] P sets of CSI-IM resources are configured in each of N RBs, where P is a positive integer and N is a positive integer;

[0098] Among them, any set of CSI-IM resources of any RB includes two consecutive subcarriers on two consecutive symbols of the interference time slot, or includes four consecutive subcarriers on one symbol of the interference time slot, and P sets of CSI-IM resources of any RB include subcarriers of the RB on the target symbol in the interference time slot, and the target symbol is other symbols in the interference time slot except the 0th symbol and the 1st symbol.

[0099] It should be noted that P is greater than M i For example, P can be 36, N can be 4, etc. That is, in this embodiment, 36 sets of CSI-IM resources can be configured in each RB. That is, in order to obtain subcarrier-level interference, all resources in 4 RBs need to be configured as CSI-IM, such as Figure 6 and 7 As shown, 36 CSI-IM positions and one CSI-RS resource are configured. Figure 6 In any RB, any set of CSI-IM resources includes two consecutive subcarriers on two consecutive symbols of the interference time slot. Figure 7 In the example, any set of CSI-IM resources of any RB includes four consecutive subcarriers on one symbol of the interference slot.

[0100] In this embodiment, due to the flexible configuration of CSI-RS, 36 sets of CSI-IM resources and their corresponding CSI-RS are required to measure the interference of RE granularity. In the configuration, the CSI-IM frequency domain BWP is configured as 4 PRBs (minimum frequency domain bandwidth requirement), the time domain configuration is 2 to 13, full time domain and full frequency band configuration, at this time subcarrier-offset = 12. The same as configuration 1, according to the CSI reported by the terminal, determine the interference RE position.

[0101] For example, 36 sets of CSI-IM positions are configured with corresponding CSI-RS feedback CSI. The base station confirms the time-frequency domain position of the interference according to the interference level fed back by CQI. When PDSCH is transmitted, the interference time-frequency domain resources are extended from 4 PRBs to the full bandwidth according to the CSI-RS configuration rules. PDSCH transmission is muted on the interference RE resources to reduce interference and overhead. Compared with the whole symbol muting, the interference resource muting reduces the overhead from 0.35% (or higher, multiple neighboring cell interference) to about 0.12%.

[0102] As an example, the proportion of confirmed ACKs in the interference time slot of the start subframe is less than a first preset value and / or the proportion of negative ACKs is greater than a second preset value.

[0103] In one embodiment, after determining the interference resource according to the channel state information CSI fed back by the terminal device, the method further includes:

[0104] A zero-power channel state information reference signal ZP CSI-RS or CSI-RS is configured on the interference resource, and physical downlink shared channel PDSCH data is not transmitted in the interference resource.

[0105] After determining the interference resources with symbol granularity and / or subcarrier granularity, ZP CSI-RS or CSI-RS is configured on the interference resources, and physical downlink shared channel PDSCH data is not transmitted in the interference resources, that is, the interference resources are silenced. In this embodiment, only the interference resources with symbol granularity and / or subcarrier granularity need to be silenced, which can reduce interference and resource overhead.

[0106] In one embodiment, configuring a channel state information interference measurement CSI-IM resource includes:

[0107] When the interference is periodic interference and the first network device does not have the first interface, configure a channel state information interference measurement CSI-IM resource;

[0108] The first interface includes at least one of the following:

[0109] Xn interface;

[0110] X2 interface.

[0111] When the first network device does not have the first interface, the first network device cannot interact with other network devices through the first interface. In this case, the first network device only needs to configure CSI-IM resources, and then send CSI-IM to the terminal device based on the CSI-IM resources, and determine the interference symbol and / or interference subcarrier based on the channel state information CSI fed back by the terminal device. In this way, the accuracy of interference estimation can be improved.

[0112] In one embodiment, the method further comprises:

[0113] When the interference is periodic interference and the first network device and the second network device have a first interface, receiving a second resource sent by the second network device through the first interface;

[0114] According to the second resource, the first network device configures the ZP CSI-RS or CSI-RS in the same resource, and does not transmit physical downlink shared channel PDSCH data in the second resource;

[0115] The second resource includes at least one of the following:

[0116] CSI-RS configuration resources;

[0117] TRS configuration resources;

[0118] Synchronization signal SSB configuration resource.

[0119] In the case where the first network device and the second network device have a first interface, the first network device can exchange information with the second network device through the first interface. In this way, the second network device can send the second resource to the first network device through the first interface. The second resource can be understood as a resource used by the second network device, which may cause interference to other network devices and is sent to the first network device. In this way, the first network device can clearly identify the second resource of the second network device. The first network device can configure ZP CSI-RS or CSI-RS on the same resource based on the second resource, that is, the first network device configures resource configuration ZP CSI-RS or CSI-RS on the second resource, and does not transmit physical downlink shared channel PDSCH data in the second resource, that is, the first network device is silent on the second resource. In this embodiment, the accuracy of interference estimation can be improved and the interference between network devices can be reduced.

[0120] In one embodiment, the method further comprises:

[0121] In the case where the interference is non-periodic interference, the cell-specific offset CIO of the first network device is increased, and the cell-specific offset CIO of the second network device is reduced.

[0122] The second network device can be understood as a neighbor network of the first network device. In this embodiment, for the case where the interference is non-periodic, in order to reduce the interference, the cell-specific offset CIO of the first network device is increased and the cell-specific offset CIO of the second network device is reduced, that is, by adjusting the cell-specific offset CIO, the interference of the second network device to the first network device is reduced to improve the communication stability.

[0123] That is, in the embodiment of the present application, first, the time-frequency domain resources of the maximum SSB are synchronously deployed throughout the network, and the location where the SSB is sent does not send PDSCH data, thereby reducing the interference of SSB on PDSCH. Since the SSB overhead is low and the configuration is relatively fixed, the feasibility of the same configuration for the entire network is high.

[0124] Then, the first network device obtains the interference time slot and interference period according to the ACK ratio and / or NACK ratio reported by the terminal device. If the interference is non-periodic, it is likely that the macro station PDSCH interferes with the indoor substation. By adjusting the switching parameters, the interference of the macro station user to the user in the indoor substation is reduced. That is, the cell-specific bias CIO of the first network device can be improved, and the cell-specific bias CIO of the second network device can be reduced. If the interference is periodic, it is likely that the outdoor station CSI-RS or TRS interferes with the indoor substation. The existing network CSI-RS is configured as periodic full bandwidth, and the time frequency and position configuration are flexible. In the case of periodic interference, if the first network device does not have the first interface, the channel state information interference measurement CSI-IM resource is configured, and the downlink interference situation is reported through the terminal device. If the first network device and the second network device have the first interface, the second resource sent by the second network device can be received through the first interface. According to the second resource, the first network device configures ZP CSI-RS or CSI-RS in the same resource, and does not transmit physical downlink shared channel PDSCH data in the second resource.

[0125] In an embodiment of the present application, a terminal device measurement method can be adopted to feedback the downlink interference level based on the symbol and RE granularity, configure ZP CSI-RS in high-interference REs, and do not transmit PDSCH data in silent REs, thereby reducing the impact and overhead of co-frequency networking interference and improving data transmission accuracy.

[0126] During the CSI-IM for interference measurement configuration process:

[0127] The interference time slot and period are obtained from the ACK / NACK reported by the terminal device.

[0128] Symbol granularity interference assessment is configured by the terminal device as follows Figure 2 CSI-IM configuration obtains interference through CSI reporting and configures CSI-IM resources in all time slots within 6 / 12 PRBs to obtain downlink interference.

[0129] The parameter subcarrier OFFSET can be added to implement the deployment of CSI-IM in each RB subcarrier (subcarrier), meeting the need to reflect the interference situation of the entire time slot, reducing the reference signal overhead, and reducing the CSI-RS feedback overhead by about 67%. At the same time, it can meet the processing needs of the terminal and reduce the data processing time by 33%.

[0130] The CSI-IM configuration density can be adjusted through subcarrier OFFSET.

[0131] Based on RE granularity interference assessment, such as Figure 2 As shown, CSI-IM adopts 4 RB full time slot full bandwidth configuration, obtains CSI-RS configuration mode through interference measurement, and silences PDSCH transmission.

[0132] The CSI-IM configuration mode is solidified into several configuration modes. Each final configuration mode includes 36 resources, corresponding to 1 CSI-RS resource, and feeds back a CSI reflecting the interference situation.

[0133] The measurement can be periodic or aperiodic, and the periodic and aperiodic parameters are configured through RRC parameters.

[0134] For the CSI-RS for interference measurement configuration process:

[0135] CSI-RS resources for interference measurement can be configured. The number of CSI-IM and CSI-RS resources is the same, and the configuration corresponds one to one. Multiple CSI-RS resources point to the same resource configuration, reducing CSI-RS overhead

[0136] CSI-RS for interference measurement can be configured, and different CSI-IM configurations can be used to correspond to the same set of CSI-RS for interference measurement resources

[0137] In addition, in the 38.311CSI-ResourceConfig information, a CSI-RS for interference measurement indication may be added to indicate which resource in the nzp-CSI-RS-ResourceSetList (non-zero power channel state information reference signal resource list) is used for interference measurement.

[0138] The first network confirms the location of the downlink interference Symbol or RE according to the CSI reported by the terminal device based on CSI-RS and CSI-IM, and configures the downlink ZP CSI-RS resource at the interference location to reduce the interference and overhead of the same frequency networking.

[0139] CSI-IM can obtain interference conditions of different bandwidths through frequency hopping configuration.

[0140] It should be noted that the first network device and the second network device can be co-frequency networking devices. In the method of the embodiment of the present application, the co-frequency networking interference source is obtained through interference analysis, and relevant solutions are proposed to reduce downlink interference and overhead. In the embodiment of the present application, the SSB resources are first uniformly configured to reduce the interference of SSB to the indoor substation; then the interference time slot and interference period are obtained according to the ACK / NACK reported by the terminal. If the interference is non-periodic, the switching parameters are adjusted to reduce the interference of the macro station to the indoor substation; if the interference is periodic, the interference situation is reported by the terminal, and zero-power resource prohibited mode PDSCH data is configured on the interference resource to reduce interference to PDSCH. This proposal adds a subcarrier OFFSET parameter to reduce CSI feedback overhead; a new CSI-IM for interference measurement and CSI-RS for interference measurement configuration method is proposed to realize the downlink interference reporting of the terminal based on symbol or RE granularity. This scheme can not only evaluate CSI-RS downlink interference, but also evaluate other downlink interference, such as irregular interference from other devices in a co-built and shared network.

[0141] See also Figure 8 , Figure 8 An interference measurement method provided by an embodiment of the present invention is applied to a terminal device, and the method includes:

[0142] Step 801: Receive a CSI-IM sent by a first network device according to a channel state information interference measurement CSI-IM resource;

[0143] Step 802: In response to the CSI-IM, interference detection is performed on the CSI-IM resources, and the CSI is sent to the first network device, where the CSI is used by the first network device to determine interference resources, where the interference resources include at least one of the following:

[0144] Interference symbols;

[0145] Interfering subcarrier.

[0146] In one embodiment, the method further comprises:

[0147] receiving first indication information sent by a first network device, where the first indication information is used to indicate interference feedback based on CSI-IM; or,

[0148] In response to the CSI-IM, interference detection is performed on the CSI-IM resource, and before the CSI is sent to the first network device, the method further includes:

[0149] Receive a CSI-RS sent by a first network device based on a CSI-RS resource, where the CSI-RS resource corresponds to a CSI-IM resource; wherein,

[0150] In response to the CSI-IM, performing interference detection on the CSI-IM resource and sending the CSI to the first network device include:

[0151] In response to the CSI-IM and the CSI-RS, the CSI is sent to the first network device.

[0152] See also Fig. 9 , Fig. 9 is a schematic diagram of the structure of a first network device provided by an embodiment of the present invention, such as Fig. 9 As shown, the first network device 900 includes:

[0153] A first configuration module 901 is used to configure a channel state information interference measurement CSI-IM resource;

[0154] A first sending module 902, configured to send a CSI-IM to a terminal device according to a CSI-IM resource;

[0155] The first determination module 903 is configured to determine interference resources according to the channel state information CSI fed back by the terminal device, where the interference resources include at least one of the following:

[0156] Interference symbols;

[0157] Interfering subcarrier.

[0158] In one embodiment, the first network device 900 further includes:

[0159] A third sending module is used for the first determining module 903 to send first indication information to the terminal device before determining the interference resource according to the channel state information CSI fed back by the terminal device, where the first indication information is used to indicate interference feedback based on CSI-IM;

[0160] Alternatively, the first network device 900 further includes:

[0161] A second configuration module is used for the first determination module 903 to configure CSI-RS resources before determining interference resources according to the channel state information CSI fed back by the terminal device, and the CSI-RS resources correspond to the CSI-IM resources;

[0162] The fourth sending module is used to send CSI-RS to the terminal device based on the CSI-RS resource, wherein the CSI is the CSI that the terminal device responds to the CSI-IM and CSI-RS feedback.

[0163] In one embodiment, the first network device 900 further includes:

[0164] A second determination module is used for determining an interference time slot and an interference period according to a determined ACK ratio and / or a negative ACK ratio in a preset historical time period before the first configuration module 901 executes the configuration of the channel state information interference measurement CSI-IM resource;

[0165] The configuration of the channel state information interference measurement CSI-IM resource includes:

[0166] Based on the interference time slot and the interference period, the CSI-IM resources are configured, wherein the interference symbol is a symbol in the interference time slot.

[0167] In one embodiment, the first configuration module includes:

[0168] A first sub-configuration module is used to configure a starting subcarrier in N RBs in an interference time slot of each subframe of a plurality of subframes, an interference period is spaced between two adjacent subframes in the plurality of subframes, the starting subframe in the plurality of subframes is a subframe in which interference occurs for the first time within a preset historical time period, determined by determining an ACK ratio and / or a NACK ratio, and N is an integer greater than 1;

[0169] A second sub-configuration module is used to configure a first subcarrier offset, where the first subcarrier offset is used to determine a subcarrier in each RB of N RBs whose offset from a corresponding starting subcarrier is a positive integer multiple of the first subcarrier offset, the CSI-IM resources include target resources in the N RBs, the target resources of the i-th RB include Mi sets of CSI-IM resources, any set of CSI-IM resources includes two consecutive subcarriers on two consecutive symbols of an interference time slot, or includes four consecutive subcarriers on a symbol of an interference time slot, the i-th RB is any RB in the N RBs, i is a positive integer, i≤N, and Mi is an integer greater than 1;

[0170] Among them, the two consecutive symbols in the first set of CSI-IM resources in the Mi sets of CSI-IM resources are the second symbol and the third symbol of the interference time slot, the first subcarrier of the two consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the i-th RB, the offset between the first subcarrier in the Mi-1 sets of CSI-IM resources and the starting subcarrier of the i-th RB is an integer multiple of the first subcarrier offset, and the offset between the first subcarriers between any two adjacent sets of CSI-IM resources in the Mi sets of CSI-IM resources is the first subcarrier offset, and the offset between the first symbols of any two adjacent sets of CSI-IM resources in the Mi sets of CSI-IM resources is 2; or,

[0171] A symbol in the first set of Mi sets of CSI-IM resources is the second symbol of the interference time slot, the first subcarrier among the four consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the i-th RB, the offset between the first subcarrier in Mi-1 sets of CSI-IM resources and the starting subcarrier of the i-th RB is an integer multiple of the first subcarrier offset, and the offset between the first subcarriers between any two adjacent sets of CSI-IM resources in Mi sets of CSI-IM resources is the first subcarrier offset, and the offset between the first symbols of any two adjacent sets of CSI-IM resources in Mi sets of CSI-IM resources is 1.

[0172] In one embodiment, the first network device 900 further includes:

[0173] The third configuration module is used for the first determination module 903 to execute, based on the channel state information CSI fed back by the terminal device, after determining the interference resource, to configure a zero power channel state information reference signal ZP CSI-RS or CSI-RS on the interference resource, and not to transmit physical downlink shared channel PDSCH data in the interference resource.

[0174] In one embodiment, configuring a channel state information interference measurement CSI-IM resource includes:

[0175] When the interference is periodic interference and the first network device does not have the first interface, configure a channel state information interference measurement CSI-IM resource;

[0176] The first interface includes at least one of the following:

[0177] Xn interface;

[0178] X2 interface.

[0179] In one embodiment, the first network device 900 further includes:

[0180] A second receiving module, configured to receive a second resource sent by the second network device through the first interface when the interference is periodic interference and the first network device and the second network device have a first interface;

[0181] A fourth configuration module, configured to configure, by the first network device, a ZP CSI-RS or a CSI-RS in the same resource according to the second resource, and not transmit physical downlink shared channel PDSCH data in the second resource;

[0182] The second resource includes at least one of the following:

[0183] CSI-RS configuration resources;

[0184] TRS configuration resources;

[0185] Synchronization signal SSB configuration resource.

[0186] In one embodiment, the first network device 900 further includes:

[0187] The adjustment module is used to increase the cell-specific offset CIO of the first network device and reduce the cell-specific offset CIO of the second network device when the interference is non-periodic interference.

[0188] See also Fig.10 , Fig.10 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present invention, such as Fig.10 As shown, the terminal device 1000 includes:

[0189] The first receiving module 1001 is configured to receive a CSI-IM sent by a first network device according to a channel state information interference measurement CSI-IM resource;

[0190] The second sending module 1002 is configured to perform interference detection on the CSI-IM resource in response to the CSI-IM, and send the CSI to the first network device, where the CSI is used by the first network device to determine the interference resource, where the interference resource includes at least one of the following:

[0191] Interference symbols;

[0192] Interfering subcarrier.

[0193] In one embodiment, the terminal device 1000 further includes:

[0194] A third receiving module is configured to receive first indication information sent by a first network device, where the first indication information is used to indicate interference feedback based on CSI-IM; or,

[0195] A fourth receiving module is used for the second sending module 1102 to perform interference detection on the CSI-IM resource in response to the CSI-IM, and before sending the CSI to the first network device, receive the CSI-RS sent by the first network device based on the CSI-RS resource, where the CSI-RS resource corresponds to the CSI-IM resource;

[0196] The method of performing interference detection on the CSI-IM resource in response to the CSI-IM and sending the CSI to the first network device includes:

[0197] In response to the CSI-IM and the CSI-RS, the CSI is sent to the first network device.

[0198] An embodiment of the present invention also provides a first network device, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, each process of the above-mentioned interference measurement method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0199] For details, see Fig.11 The embodiment of the present invention further provides a first network device, including a bus 1101, a transceiver 1102, an antenna 1103, a bus interface 1104, a processor 1105 and a memory 1106.

[0200] The processor 1105 is configured to configure a channel state information interference measurement CSI-IM resource;

[0201] The transceiver 1102 is configured to send the CSI-IM to the terminal device according to the CSI-IM resource;

[0202] The processor 1105 is configured to determine an interference resource according to the channel state information CSI fed back by the terminal device, where the interference resource includes at least one of the following:

[0203] Interference symbols;

[0204] Interfering subcarrier.

[0205] In one embodiment, the transceiver 1102 is configured to send first indication information to the terminal device before the first determination module 903 determines the interference resource according to the channel state information CSI fed back by the terminal device, where the first indication information is used to indicate interference feedback based on the CSI-IM;

[0206] or,

[0207] The processor 1105 is configured to configure a CSI-RS resource before determining the interference resource according to the channel state information CSI fed back by the terminal device, where the CSI-RS resource corresponds to the CSI-IM resource;

[0208] The transceiver 1102 is used to send CSI-RS to the terminal device based on the CSI-RS resource, wherein the CSI is the CSI fed back by the terminal device in response to the CSI-IM and the CSI-RS.

[0209] In one embodiment, the processor 1105 is configured to determine the interference time slot and the interference period according to the determined ACK ratio and / or the negative ACK ratio in the preset historical time period before the processor 1105 executes the configuration of the channel state information interference measurement CSI-IM resource;

[0210] The configuration of the channel state information interference measurement CSI-IM resource includes:

[0211] Based on the interference time slot and the interference period, the CSI-IM resources are configured, wherein the interference symbol is a symbol in the interference time slot.

[0212] In one embodiment, the processor 1105 is configured to configure a starting subcarrier in N RBs in an interference time slot of each subframe of the multiple subframes, an interference period is spaced between two adjacent subframes in the multiple subframes, and the starting subframe in the multiple subframes is a subframe in which interference occurs for the first time within a preset historical time period, which is determined by determining an ACK ratio and / or a NACK ratio, and N is an integer greater than 1;

[0213] Processor 1105 is configured to configure a first subcarrier offset, where the first subcarrier offset is used to determine a subcarrier in each RB of N RBs whose offset from a corresponding starting subcarrier is a positive integer multiple of the first subcarrier offset, the CSI-IM resource includes a target resource in the N RBs, the target resource of the i-th RB includes Mi sets of CSI-IM resources, any set of CSI-IM resources includes two consecutive subcarriers on two consecutive symbols of an interference time slot, or includes four consecutive subcarriers on a symbol of an interference time slot, the i-th RB is any RB in the N RBs, i is a positive integer, i≤N, and Mi is an integer greater than 1;

[0214] Among them, the two consecutive symbols in the first set of CSI-IM resources in the Mi sets of CSI-IM resources are the second symbol and the third symbol of the interference time slot, the first subcarrier of the two consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the i-th RB, the offset between the first subcarrier in the Mi-1 sets of CSI-IM resources and the starting subcarrier of the i-th RB is an integer multiple of the first subcarrier offset, and the offset between the first subcarriers between any two adjacent sets of CSI-IM resources in the Mi sets of CSI-IM resources is the first subcarrier offset, and the offset between the first symbols of any two adjacent sets of CSI-IM resources in the Mi sets of CSI-IM resources is 2; or,

[0215] A symbol in the first set of Mi sets of CSI-IM resources is the second symbol of the interference time slot, the first subcarrier among the four consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the i-th RB, the offset between the first subcarrier in Mi-1 sets of CSI-IM resources and the starting subcarrier of the i-th RB is an integer multiple of the first subcarrier offset, and the offset between the first subcarriers between any two adjacent sets of CSI-IM resources in Mi sets of CSI-IM resources is the first subcarrier offset, and the offset between the first symbols of any two adjacent sets of CSI-IM resources in Mi sets of CSI-IM resources is 1.

[0216] In one embodiment, the processor 1105 is used for the first determination module 903 to execute, based on the channel state information CSI fed back by the terminal device, after determining the interference resource, to configure a zero power channel state information reference signal ZPCSI-RS or CSI-RS on the interference resource, and not transmit physical downlink shared channel PDSCH data in the interference resource.

[0217] In one embodiment, configuring a channel state information interference measurement CSI-IM resource includes:

[0218] When the interference is periodic interference and the first network device does not have the first interface, configure a channel state information interference measurement CSI-IM resource;

[0219] The first interface includes at least one of the following:

[0220] Xn interface;

[0221] X2 interface.

[0222] In one embodiment, the transceiver 1102 is configured to receive the second resource sent by the second network device through the first interface when the interference is periodic interference and the first network device and the second network device have a first interface;

[0223] The processor 1105 is configured to configure, according to the second resource, the first network device in the same resource with a ZP CSI-RS or a CSI-RS, and not transmit physical downlink shared channel PDSCH data in the second resource;

[0224] The second resource includes at least one of the following:

[0225] CSI-RS configuration resources;

[0226] TRS configuration resources;

[0227] Synchronization signal SSB configuration resource.

[0228] In one embodiment, the processor 1105 is configured to increase the cell-specific offset CIO of the first network device and decrease the cell-specific offset CIO of the second network device when the interference is non-periodic interference.

[0229] exist Fig.11In the embodiment, the bus architecture (represented by bus 1101) may include any number of interconnected buses and bridges, and bus 1101 links various circuits including one or more processors represented by processor 1105 and memory represented by memory 1106. Bus 1101 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 1104 provides an interface between bus 1101 and transceiver 1102. Transceiver 1102 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 1105 is transmitted on a wireless medium via antenna 1103, and further, antenna 1103 also receives data and transmits the data to processor 1105.

[0230] The processor 1105 is responsible for managing the bus 1101 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 1106 can be used to store data used by the processor 1105 when performing operations.

[0231] Optionally, the processor 1105 may be a CPU, an ASIC, an FPGA or a CPLD.

[0232] The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the interference measurement method embodiment described above is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0233] An embodiment of the present invention also provides a terminal device, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, each process of the above-mentioned interference measurement method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0234] For details, see Fig.12 As shown, an embodiment of the present invention further provides a terminal device, including a bus 1201, a transceiver 1202, an antenna 1203, a bus interface 1204, a processor 1205 and a memory 1206.

[0235] The transceiver 1202 is configured to receive a CSI-IM sent by a first network device according to a channel state information interference measurement CSI-IM resource;

[0236] The transceiver 1202 is configured to perform interference detection on the CSI-IM resource in response to the CSI-IM, and send the CSI to the first network device, where the CSI is used by the first network device to determine the interference resource, where the interference resource includes at least one of the following:

[0237] Interference symbols;

[0238] Interfering subcarrier.

[0239] In one embodiment, the transceiver 1202 is configured to receive first indication information sent by a first network device, where the first indication information is used to indicate interference feedback based on CSI-IM; or,

[0240] The transceiver 1202 is configured to execute the second sending module 1102 in response to the CSI-IM, perform interference detection on the CSI-IM resource, and receive the CSI-RS sent by the first network device based on the CSI-RS resource before sending the CSI to the first network device, where the CSI-RS resource corresponds to the CSI-IM resource;

[0241] The method of performing interference detection on the CSI-IM resource in response to the CSI-IM and sending the CSI to the first network device includes:

[0242] In response to the CSI-IM and the CSI-RS, the CSI is sent to the first network device.

[0243] exist Fig.12 In the embodiment, the bus architecture (represented by bus 1201) may include any number of interconnected buses and bridges, and bus 1201 links various circuits including one or more processors represented by processor 1205 and memory represented by memory 1206. Bus 1201 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 1204 provides an interface between bus 1201 and transceiver 1202. Transceiver 1202 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 1205 is transmitted on a wireless medium via antenna 1203, and further, antenna 1203 also receives data and transmits the data to processor 1205.

[0244] The processor 1205 is responsible for managing the bus 1201 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 1206 can be used to store data used by the processor 1205 when performing operations.

[0245] Optionally, the processor 1205 may be a CPU, an ASIC, an FPGA or a CPLD.

[0246] The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the above interference measurement method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the computer-readable storage medium is such as ROM, RAM, disk or CD.

[0247] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0248] 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 a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods of various embodiments of the present invention.

[0249] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. An interference measurement method, characterized in that: Applied to a first network device, the method comprises: Configure channel state information interference measurement CSI-IM resources; Sending the CSI-IM to the terminal device according to the CSI-IM resource; Determine interference resources according to the channel state information CSI fed back by the terminal device, where the interference resources include at least one of the following: Interference symbols; Interference subcarrier; Before configuring the channel state information interference measurement CSI-IM resources, the method further includes: Determine the interference time slot and the interference period according to the determined ACK ratio and / or the negative ACK ratio in the preset historical time period; The configuring of channel state information interference measurement CSI-IM resources includes: The CSI-IM resource is configured based on the interference time slot and the interference period, wherein the interference symbol is a symbol in the interference time slot.

2. The interference measurement method according to claim 1, characterized in that: Before determining the interference resource according to the channel state information CSI fed back by the terminal device, the method further includes: sending first indication information to the terminal device, where the first indication information is used to indicate interference feedback based on the CSI-IM; Alternatively, before determining the interference resource according to the channel state information CSI fed back by the terminal device, the method further includes: configuring a CSI-RS resource, wherein the CSI-RS resource corresponds to the CSI-IM resource; Based on the CSI-RS resource, a CSI-RS is sent to the terminal device, wherein the CSI is the CSI fed back by the terminal device in response to the CSI-IM and the CSI-RS.

3. The interference measurement method according to claim 1, characterized in that: in, The configuring the CSI-IM resource based on the interference time slot and the interference period includes: In an interference time slot of each subframe of a plurality of subframes, a starting subcarrier of N RBs is configured, the interference period is spaced between two adjacent subframes in the plurality of subframes, the starting subframe in the plurality of subframes is a subframe in which interference occurs for the first time within the preset historical time period, as determined by determining the ACK ratio and / or the NACK ratio, and N is an integer greater than 1; A first subcarrier offset is configured, where the first subcarrier offset is used to determine a subcarrier whose offset from a corresponding starting subcarrier in each RB of the N RBs is a positive integer multiple of the first subcarrier offset, and the CSI-IM resource includes a target resource in the N RBs, and the target resource of the i-th RB includes M i A set of CSI-IM resources, any set of CSI-IM resources includes two consecutive subcarriers on two consecutive symbols of the interference time slot, or includes four consecutive subcarriers on one symbol of the interference time slot, the i-th RB is any RB in the N RBs, i is a positive integer, i≤N, M i is an integer greater than 1; Among them, the M i The two consecutive symbols in the first set of CSI-IM resources in the set of CSI-IM resources are the second symbol and the third symbol of the interference time slot, the first subcarrier of the two consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the i-th RB, M i - The offset between the first subcarrier in a set of CSI-IM resources and the starting subcarrier of the i-th RB is an integer multiple of the first subcarrier offset, and the M i The offset between the first subcarriers of any two adjacent sets of CSI-IM resources in the set of CSI-IM resources is the first subcarrier offset. i The offset between the first symbols of any two adjacent sets of CSI-IM resources in a set of CSI-IM resources is 2; or, The M i A symbol in the first set of CSI-IM resources in the set of CSI-IM resources is the second symbol of the interference time slot, the first subcarrier of the four consecutive subcarriers in the first set of CSI-IM resources is the starting subcarrier of the i-th RB, M i - The offset between the first subcarrier in a set of CSI-IM resources and the starting subcarrier of the i-th RB is an integer multiple of the first subcarrier offset, and the M i The offset between the first subcarriers of any two adjacent sets of CSI-IM resources in the set of CSI-IM resources is the first subcarrier offset. i The offset between the first symbols of any two adjacent sets of CSI-IM resources in a set of CSI-IM resources is 1.

4. The interference measurement method according to claim 1, characterized in that: After determining the interference resource according to the channel state information CSI fed back by the terminal device, the method further includes: A zero-power channel state information reference signal ZP CSI-RS or CSI-RS is configured on the interference resource, and physical downlink shared channel PDSCH data is not transmitted in the interference resource.

5. The interference measurement method according to claim 1, characterized in that: The configuring of a channel state information interference measurement CSI-IM resource includes: When the interference is periodic interference and the first network device does not have a first interface, configure a channel state information interference measurement CSI-IM resource; The first interface includes at least one of the following: Xn interface; X2 interface.

6. The interference measurement method according to claim 5, characterized in that: The method further comprises: When the interference is periodic interference and the first network device and the second network device have the first interface, receiving the second resource sent by the second network device through the first interface; According to the second resource, the first network device configures a ZP CSI-RS or a CSI-RS in the same resource, and does not transmit physical downlink shared channel PDSCH data in the second resource; The second resource includes at least one of the following: CSI-RS configuration resources; TRS configuration resources; Synchronization signal SSB configuration resource.

7. The interference measurement method according to claim 1, characterized in that: The method further comprises: In the case where the interference is non-periodic interference, the cell-specific offset CIO of the first network device is increased, and the cell-specific offset CIO of the second network device is reduced.

8. An interference measurement method, applied to a terminal device, characterized in that: The method comprises: Receiving a CSI-IM sent by a first network device according to a channel state information interference measurement CSI-IM resource; In response to the CSI-IM, interference detection is performed on the CSI-IM resource, and CSI is sent to the first network device, where the CSI is used by the first network device to determine an interference resource, where the interference resource includes at least one of the following: Interference symbols; Interference subcarrier; The CSI-IM resource is a CSI-IM resource configured based on an interference time slot and an interference period, wherein the interference symbol is a symbol in the interference time slot, and the interference time slot and the interference period are determined according to a determined ACK ratio and / or a negative ACK ratio within a preset historical time period.

9. The interference measurement method according to claim 8, characterized in that: The method further comprises: receiving first indication information sent by the first network device, where the first indication information is used to instruct interference feedback to be performed based on the CSI-IM; or, The step of performing interference detection on the CSI-IM resource in response to the CSI-IM and before sending the CSI to the first network device further includes: receiving a CSI-RS sent by the first network device based on a CSI-RS resource, wherein the CSI-RS resource corresponds to the CSI-IM resource; wherein: The step of performing interference detection on the CSI-IM resource in response to the CSI-IM and sending the CSI to the first network device includes: In response to the CSI-IM and the CSI-RS, CSI is sent to the first network device.

10. A first network device, characterized in that: The first network device comprises: A first configuration module is used to configure a channel state information interference measurement CSI-IM resource; A first sending module, configured to send the CSI-IM to a terminal device according to the CSI-IM resource; The first determination module is configured to determine an interference resource according to the channel state information CSI fed back by the terminal device, where the interference resource includes at least one of the following: Interference symbols; Interference subcarrier; The first network device also includes: A second determination module, configured to determine an interference time slot and an interference period according to a determination ACK ratio and / or a negative ACK ratio in a preset historical time period; The configuration of the channel state information interference measurement CSI-IM resource includes: Based on the interference time slot and the interference period, the CSI-IM resources are configured, wherein the interference symbol is a symbol in the interference time slot.

11. A terminal device, characterized in that: The terminal device comprises: A first receiving module, configured to receive a CSI-IM sent by a first network device according to a channel state information interference measurement CSI-IM resource; A second sending module is configured to perform interference detection on the CSI-IM resource in response to the CSI-IM, and send CSI to the first network device, where the CSI is used by the first network device to determine an interference resource, where the interference resource includes at least one of the following: Interference symbols; Interference subcarrier; The CSI-IM resource is a CSI-IM resource configured based on an interference time slot and an interference period, wherein the interference symbol is a symbol in the interference time slot, and the interference time slot and the interference period are determined according to a determined ACK ratio and / or a negative ACK ratio within a preset historical time period.

12. A first network device, characterized in that: Including transceiver and processor, The processor is used to configure a channel state information interference measurement CSI-IM resource; The transceiver is used to send the CSI-IM to the terminal device according to the CSI-IM resource; The processor is configured to determine an interference resource according to channel state information CSI fed back by the terminal device, where the interference resource includes at least one of the following: Interference symbols; Interference subcarrier; The processor 1105 is configured to determine an interference time slot and an interference period according to a determined ACK ratio and / or a negative ACK ratio in a preset historical time period before configuring a channel state information interference measurement CSI-IM resource; The configuration of the channel state information interference measurement CSI-IM resource includes: Based on the interference time slot and the interference period, the CSI-IM resources are configured, wherein the interference symbol is a symbol in the interference time slot.

13. A terminal device, characterized in that: Including transceiver and processor, The transceiver is used to receive the CSI-IM sent by the first network device according to the channel state information interference measurement CSI-IM resource; The transceiver is configured to perform interference detection on the CSI-IM resource in response to the CSI-IM, and send CSI to the first network device, where the CSI is used by the first network device to determine an interference resource, where the interference resource includes at least one of the following: Interference symbols; Interference subcarrier; The CSI-IM resource is a CSI-IM resource configured based on an interference time slot and an interference period, wherein the interference symbol is a symbol in the interference time slot, and the interference time slot and the interference period are determined according to a determined ACK ratio and / or a negative ACK ratio within a preset historical time period.

14. A first network device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program implements the steps of the method according to any one of claims 1 to 7 when executed by the processor.

15. A terminal device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the method according to any one of claims 8 to 9 are implemented.

16. A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the computer program implements the steps of the method described in any one of claims 1 to 7; or when the computer program is executed by a processor, the computer program implements the steps of the method described in any one of claims 8 to 9.

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