Capability reporting method and user equipment, communication system, medium and program product

Abstract

The invention provides a capability reporting method, user equipment, a communication system, a medium and a program product. The capability reporting method comprises the step of reporting related capability information of a multi-user multiple-input multiple-output (MU-MIMO) receiver of user equipment to network side equipment.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and in particular to a capability reporting method, user equipment, a communication system, a medium, and a program product. Background Art

[0002] 5G NR (New Radio) base stations generally adopt massive MIMO (Multiple-Input Multiple-Output) in the 3.5 GHz and higher frequency bands. Multi-user MIMO can transmit downlink data to multiple users simultaneously on the same frequency, thereby improving network throughput and the single-user rate experience. It is a widely used transmission method in NR.

[0003] In downlink MU-MIMO scenarios, user equipment is subject to inter-user interference from multiplexed users. To avoid inter-user interference, the base station schedules the channel information of each user to avoid strong inter-user interference. Summary of the Invention

[0004] The inventors note that in related technologies, inter-user interference (IUI) significantly impacts downlink reception reliability, as base stations must balance fairness, traffic demand, and actual user location when scheduling user channel information. Simulation results show that even with orthogonal precoding at the base station, user devices can still experience interference from multiplexed users, preventing them from achieving the desired throughput at the desired SNR (Signal-to-Noise Ratio).

[0005] Accordingly, the present disclosure provides a capability reporting method, which reports the MU (Multi User)-MIMO receiver-related capability information of the user equipment to the network side device, so that the network side device determines auxiliary information based on the MU-MIMO receiver-related capability information and network configuration information reported by the user equipment, and sends the auxiliary information to the user equipment so that the user equipment can use the auxiliary information to effectively improve the reliability of downlink data reception.

[0006] In a first aspect of the present disclosure, a capability reporting method is provided, comprising: reporting multi-user multiple-input multiple-output (MU-MIMO) receiver-related capability information of a user equipment to a network-side device.

[0007] In some embodiments, the capability information includes at least one of MU-MIMO inter-user interference processing capability information, the highest modulation order of multiplexed users supported by the user equipment, the number of demodulation reference signal DMRS ports supported by the user equipment, and the DMRS configuration supported by the user equipment.

[0008] In some embodiments, the DMRS configuration supported by the user equipment includes at least one of a DMRS version, a number of DMRS symbols, and a DMRS type supported by the user equipment.

[0009] In some embodiments, the MU-MIMO inter-user interference processing capability information includes the MU-MIMO inter-user interference processing capability information that the user equipment supports based on enhanced minimum mean square error interference rejection combining E-MMSE-IRC, the MU-MIMO inter-user interference processing capability information that supports based on low complexity maximum likelihood reception R-ML, the MU-MIMO inter-user interference processing capability information that supports the modulation order indicated by the network, the MU-MIMO inter-user interference processing capability information that supports the modulation order not indicated by the network, the MU-MIMO inter-user interference processing capability information that supports the maximum multiplexing data layer as the first specified value, and the MU-MIMO inter-user interference processing capability information that supports At least one of the following: MU-MIMO inter-user interference processing capability information having a maximum number of multiplexed users being a second specified value, MU-MIMO inter-user interference processing capability information supporting when the precoding granularity of the target user is wideband, MU-MIMO inter-user interference processing capability information supporting when the frequency domain resource allocation type of the multiplexed user is different from the frequency domain resource allocation type of the target user, and MU-MIMO inter-user interference processing capability information supporting when the resource block group RBG size of the multiplexed user is different from the resource block group RBG size of the target user when the frequency domain resource allocation type of the multiplexed user is Type 0.

[0010] In some embodiments, the reporting granularity of the capability information is each user equipment, each frequency band, each frequency band combination, each feature set, or each feature set of each carrier component.

[0011] In some embodiments, auxiliary information sent by the network side device is received.

[0012] In some embodiments, the auxiliary information includes DMRS configuration information of the multiplexed user, whether there is currently multiplexed user information, modulation and coding strategy table information configured by the network side device for the multiplexed user, the highest modulation order configured by the network side device for the multiplexed user, phase tracking reference signal PT-RS configuration information of the multiplexed user, channel state information reference signal CSI-RS of the multiplexed user, tracking reference signal TRS configuration information of the multiplexed user, time domain resource allocation information of the multiplexed user, scheduling and resource allocation information of the multiplexed user, and at least one of the multiplexed user DMRS port information.

[0013] In some embodiments, the multiplexing user scheduling and resource allocation information includes at least one of the frequency domain resource allocation type of the multiplexing user, whether the frequency domain resource allocation type of the multiplexing user is the same as the frequency domain resource allocation type of the target user, and whether the resource block group RBG size of the multiplexing user is the same as the resource block group RBG size of the target user when the frequency domain resource allocation type of the multiplexing user is Type0.

[0014] In some embodiments, when the frequency domain resource allocation type of the multiplexing user is Type 0, the multiplexing user scheduling and resource allocation information also includes at least one of the resource block group RBG size information of the multiplexing user, the partial bandwidth size information of the multiplexing user, and the resource block group RBG size configuration information of the multiplexing user.

[0015] In some embodiments, when the precoding granularity of the target user is wideband, the auxiliary information further includes whether the multiplexed user is wideband.

[0016] In some embodiments, when the precoding granularity of the target user is wideband, the auxiliary information further includes whether the resource allocation of the multiplexed user and the target user is the same.

[0017] In some embodiments, when the precoding granularity of the target user is wideband, the auxiliary information further includes whether the precoding of the multiplexed user is the same as that of the target user.

[0018] In some embodiments, the network configuration information of the user equipment includes: the frequency domain resource allocation type of the multiplexing user is the same as the frequency domain resource allocation type of the target user, or when the resource allocation type of the multiplexing user is Type0, the resource block group RBG size of the multiplexing user is the same as the RBG size of the target user.

[0019] In some embodiments, the network configuration information of the user equipment includes: when the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the frequency domain resource allocation of the multiplexed user and the target user is the same.

[0020] In some embodiments, the network configuration information of the user equipment includes: when the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the precoding of the multiplexed user is the same as that of the target user.

[0021] In a second aspect of the present disclosure, a user equipment is provided, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to execute the method as described in any of the above embodiments based on instructions stored in the memory.

[0022] In a third aspect of the present disclosure, a communication system is provided, comprising: a user equipment as described in any of the above embodiments; and a network side device configured to determine auxiliary information based on MU-MIMO receiver-related capability information and network configuration information reported by the user equipment, and send the auxiliary information to the user equipment.

[0023] According to a fourth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the method described in any of the above embodiments is implemented.

[0024] According to a fifth aspect of an embodiment of the present disclosure, a computer program product is provided, comprising computer instructions, wherein when the computer instructions are executed by a processor, the method described in any of the above embodiments is implemented.

[0025] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 A flowchart of a capability reporting method according to an embodiment of the present disclosure is provided;

[0028] Figure 2 This is a flowchart of a capability reporting method according to another embodiment of the present disclosure;

[0029] Figure 3 This is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

[0030] Figure 4 This is a schematic structural diagram of a communication system according to an embodiment of the present disclosure;

[0031] Figure 5 The figure is a schematic diagram of the information processing flow of an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0033] Unless specifically stated otherwise, the relative arrangement of components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure.

[0034] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0035] Technologies, methods and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods and equipment should be considered part of the authorization specification.

[0036] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0037] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0038] Figure 1 FIG2 is a flow chart of a capability reporting method according to an embodiment of the present disclosure. In some embodiments, the capability reporting method is performed by a user equipment (UE).

[0039] In step 101, MU-MIMO receiver-related capability information of a user equipment is generated.

[0040] In some embodiments, the capability information includes at least one of the following:

[0041] 1) MU-MIMO inter-user interference processing capability information.

[0042] In some embodiments, the MU-MIMO inter-user interference handling capability information includes at least one of the following:

[0043] 1.1) The user equipment supports MU-MIMO inter-user interference processing capability information based on E (Enhanced)-MMSE (Minimum Mean Squared Error)-IRC (Interference Rejection Combining).

[0044] 1.2) The user equipment supports MU-MIMO inter-user interference processing capability based on R-ML (Reduced Maximum Likelihood).

[0045] It should be noted that the MU-MIMO inter-user interference processing capability information involved in 1.1) and 1.2) above is related to the receiver algorithm.

[0046] 1.3) The user equipment supports MU-MIMO inter-user interference processing capability information with modulation order indicated by the network.

[0047] For example, the network indicates that the adjustment order includes 1024QAM (Quadrature Amplitude Modulation), 256QAM, 64QAM, 16QAM, QPSK (Quadrature Phase Shift Keying), etc.

[0048] 1.4) The user equipment supports MU-MIMO inter-user interference processing capability information for which the modulation order is not indicated by the network.

[0049] It should be noted that the above 1.4) means that the user equipment supports blind modulation order detection. In this case, the network still needs to indicate whether the current transmission meets the conditions for the user equipment to perform blind modulation order detection.

[0050] In addition, it should be noted that the MU-MIMO inter-user interference processing capability information involved in the above 1.3) and 1.4) is related to network signaling.

[0051] 1.5) The user equipment supports MU-MIMO inter-user interference processing capability information with a maximum multiplexing data layer being a first specified value.

[0052] 1.6) Information on the MU-MIMO inter-user interference processing capability of the user equipment supporting a maximum number of multiplexed users being a second specified value.

[0053] 1.7) Information on the user equipment's ability to handle MU-MIMO inter-user interference when the precoding granularity of the target user is wideband.

[0054] It should be noted that the precoding granularity of the partial bandwidth i is P in the frequency domain. B ′ WP.i consecutive RBs (Resource Blocks), P B ′ WP.i The value is {2, 4, wideband}. Unless the parameter prb-BundlingType in the high-level signaling PDSCH-Config indicates the PRB (Physical Resource Block) bundling size (i.e. P B ′ WP.i ) is 4 or wideband, otherwise P B ′ WP.i The value of is 2.

[0055] 1.8) User equipment supports frequency domain resource allocation for multiplexed users

[0056] MU-MIMO inter-user interference processing capability information when the frequency domain resource allocation type is different from that of the target user.

[0057] 1.9) The user equipment supports MU-MIMO inter-user interference handling capability information when the frequency domain resource allocation type of the multiplexing user is Type 0 and the RBG (Resource Block Group) size of the multiplexing user is different from the RBG size of the target user.

[0058] It should be noted that the MU-MIMO inter-user interference processing capability information involved in 1.5) to 1.9) above is related to the complexity of the user equipment.

[0059] 2) The highest modulation order of multiplexed users supported by the user equipment.

[0060] For example, the highest modulation order of multiplexed users includes 1024QAM, 256QAM, 64QAM, 16QAM, QPSK, etc.

[0061] 3) The number of DMRS (Demodulation Reference Signal) ports supported by the user equipment.

[0062] 4) DMRS configuration supported by the user equipment.

[0063] In some embodiments, the DMRS configuration supported by the user equipment includes at least one of a DMRS version, a number of DMRS symbols, and a DMRS type supported by the user equipment.

[0064] In some embodiments, the reporting granularity of the above-mentioned capability information is per user equipment (per UE), per frequency band (per Band), per frequency band combination (per Band Combination), per feature set (per Feature Set) or per feature set per component carrier (per Feature Set per Component Carrier, abbreviated as per FSPC).

[0065] In step 102, MU-MIMO receiver-related capability information of the user equipment is reported to the network side device.

[0066] For example, the network side equipment includes a base station.

[0067] In some embodiments, the network side device determines auxiliary information based on the MU-MIMO receiver related capability information and network configuration information of the user equipment, and sends the auxiliary information to the user equipment so that the user equipment can effectively improve the reliability of downlink data reception based on the auxiliary information.

[0068] In the capability reporting method provided in the above embodiment of the present disclosure, the user equipment reports the MU-MIMO receiver-related capability information of the user equipment to the network side device, so that the network side device determines auxiliary information based on the MU-MIMO receiver-related capability information and network configuration information reported by the user equipment, and sends the auxiliary information to the user equipment, thereby helping the user equipment to use the auxiliary information to effectively improve the reliability of downlink data reception.

[0069] Figure 2 FIG. 1 is a flow chart of a capability reporting method according to an embodiment of the present disclosure. In some embodiments, the following capability reporting method is executed by a user equipment.

[0070] In step 201, MU-MIMO receiver-related capability information of a user equipment is generated.

[0071] In some embodiments, the capability information includes at least one of the capability information 1) to capability information 4) described above.

[0072] In step 202, MU-MIMO receiver-related capability information of the user equipment is reported to the network side device.

[0073] For example, the network side equipment includes a base station.

[0074] In some embodiments, the network-side device determines auxiliary information according to MU-MIMO receiver-related capability information of the user equipment and network configuration information, and sends the auxiliary information to the user equipment.

[0075] In some embodiments, the network configuration information of the user equipment includes at least one of the following:

[0076] 1) The frequency domain resource allocation type of the multiplexing user is the same as that of the target user, or when the resource allocation type of the multiplexing user is Type 0, the RBG size of the multiplexing user is the same as that of the target user.

[0077] 2) When the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the frequency domain resource allocation of the multiplexed user and the target user is the same.

[0078] 3) When the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the precoding of the multiplexed user is the same as that of the target user.

[0079] In step 203, auxiliary information sent by the network side device is received.

[0080] It should be noted here that the user equipment effectively improves the reliability of downlink data reception based on the auxiliary information.

[0081] In some embodiments, the auxiliary information includes at least one of the following:

[0082] 1) Reuse the user's DMRS configuration information.

[0083] 2) Whether there is currently reused user information.

[0084] 3) The modulation and coding strategy table information configured by the network side device for the multiplexed user.

[0085] 4) The highest modulation order configured by the network-side equipment for multiplexed users.

[0086] For example, the highest modulation order configured for multiplexed users includes 1024QAM, 256QAM, 64QAM, 16QAM, QPSK, and the like.

[0087] 5) Multiplexing the user's PT-RS (Phase Tracking-Reference Signal) configuration information.

[0088] 6) Multiplexing the user's CSI-RS (Channel State Information-Reference Signal).

[0089] 7) Multiplexing the user's TRS (Tracking Reference Signal) configuration information.

[0090] 8) Multiplexing user time domain resource allocation information.

[0091] 9) Multiplexing user scheduling and resource allocation information.

[0092] In some embodiments, multiplexing user scheduling and resource allocation information includes at least one of the following:

[0093] 9.1) Frequency domain resource allocation type for multiplexed users.

[0094] For example, the frequency domain resource allocation type of the multiplexed user includes Type0 or Type1.

[0095] In some embodiments, when the frequency domain resource allocation type of the multiplexing user is Type 0, the multiplexing user scheduling and resource allocation information also includes at least one of the RBG size information of the multiplexing user, partial wideband (bandwidth) size information of the multiplexing user, and RBG size configuration information of the multiplexing user.

[0096] It should be noted that the user equipment can obtain the RBG size of the multiplexed user according to the partial bandwidth size of the multiplexed user and the RBG size (rbg-Size) configuration of the multiplexed user (rbg-Size in the high-layer signaling PDSCH-Config is configured as Configuration 1 (Configuration 1) or Configuration 2 (Configuration 2)), as shown in Table 1 below.

[0097]

[0098]

[0099] Table 1

[0100] 9.2) Whether the frequency domain resource allocation type of the multiplexing user is the same as the frequency domain resource allocation type of the target user.

[0101] 9.3) When the frequency domain resource allocation type of the multiplexing user is Type 0, whether the RBG size of the multiplexing user is the same as the RBG size of the target user.

[0102] 10) Multiplexing user DMRS port information.

[0103] 11) When the precoding granularity of the target user is wideband, the auxiliary information also includes whether the precoding granularity of the multiplexed user is wideband.

[0104] It should be noted that if the auxiliary information includes whether the precoding granularity of the multiplexed user is wideband, or the auxiliary information does not include whether the precoding granularity of the multiplexed user is wideband, it indicates that the target user and the multiplexed user meet the preset network configuration.

[0105] If the auxiliary information includes that the precoding granularity of the multiplexed user is not wideband, it indicates that the target user and the multiplexed user do not meet the preset network configuration.

[0106] 12) When the precoding granularity of the target user is wideband, the auxiliary information also includes whether the resource allocation of the multiplexed user is the same as that of the target user.

[0107] It should be noted that if the auxiliary information includes information that the resource allocation of the multiplexed user is the same as that of the target user, or the auxiliary information does not include information whether the resource allocation of the multiplexed user is the same as that of the target user, it indicates that the target user and the multiplexed user meet the preset network configuration.

[0108] If the auxiliary information includes information that the resource allocation of the reused user is different from that of the target user, it indicates that the target user and the reused user do not meet the preset network configuration.

[0109] 13) When the precoding granularity of the target user is wideband, the auxiliary information also includes whether the precoding of the multiplexed user is the same as that of the target user.

[0110] It should be noted that if the auxiliary information includes information that the precoding of the multiplexed user is the same as that of the target user, or the auxiliary information does not include information whether the precoding of the multiplexed user is the same as that of the target user, it indicates that the target user and the multiplexed user meet the preset network configuration.

[0111] The auxiliary information includes information that the precoding of the multiplexed user is different from that of the target user, which indicates that the target user and the multiplexed user do not meet the preset network configuration.

[0112] Figure 3 FIG. 1 is a schematic diagram of the structure of a user equipment according to an embodiment of the present disclosure. Figure 3 As shown, the user equipment includes a memory 31 and a processor 32 .

[0113] The memory 31 is used to store instructions. The processor 32 is coupled to the memory 31. The processor 32 is configured to execute the instructions stored in the memory. Figure 1 or Figure 2 The method according to any one of the embodiments.

[0114] like Figure 3 As shown, the user equipment further includes a communication interface 33 for exchanging information with other devices. At the same time, the user equipment further includes a bus 34 through which the processor 32, the communication interface 33, and the memory 31 communicate with each other.

[0115] Memory 31 may include high-speed RAM memory or non-volatile memory, such as at least one disk storage device. Memory 31 may also be a memory array. Memory 31 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules.

[0116] Furthermore, the processor 32 may be a central processing unit (CPU), or may be an application-specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the present disclosure.

[0117] The present disclosure also relates to a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, which, when executed by a processor, implement the following Figure 1 or Figure 2 The method according to any one of the embodiments.

[0118] The present disclosure also relates to a computer program product, comprising computer instructions, wherein when the computer instructions are executed by a processor, the following is achieved: Figure 1 or Figure 2 The method according to any one of the embodiments.

[0119] Figure 4 FIG. 1 is a schematic diagram of the structure of a communication system according to an embodiment of the present disclosure. Figure 4 As shown, the communication system includes a user device 41 and a network side device 42. The user device 41 is Figure 3 The user equipment involved in any embodiment.

[0120] The network-side device 42 is configured to determine auxiliary information according to the MU-MIMO receiver-related capability information and network configuration information reported by the user equipment, and send the auxiliary information to the user equipment.

[0121] For example, the network side device 42 includes a base station.

[0122] In some embodiments, the network configuration information includes at least one of the following:

[0123] 1) The frequency domain resource allocation type of the multiplexing user is the same as that of the target user, or when the resource allocation type of the multiplexing user is Type 0, the RBG size of the multiplexing user is the same as that of the target user.

[0124] 2) When the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the frequency domain resource allocation of the multiplexed user and the target user is the same.

[0125] 3) When the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the precoding of the multiplexed user is the same as that of the target user.

[0126] Figure 5 The figure is a schematic diagram of the information processing flow of an embodiment of the present disclosure.

[0127] In step 501, the user equipment reports MU-MIMO receiver-related capability information of the user equipment to the base station.

[0128] In some embodiments, the capability information includes at least one of the following:

[0129] 1) MU-MIMO inter-user interference processing capability information.

[0130] In some embodiments, the MU-MIMO inter-user interference handling capability information includes at least one of the following:

[0131] 1.1) The user equipment supports MU-MIMO inter-user interference processing capability information based on E (Enhanced)-MMSE (Minimum Mean Squared Error)-IRC (Interference Rejection Combining).

[0132] 1.2) The user equipment supports MU-MIMO inter-user interference processing capability based on R-ML (Reduced Maximum Likelihood).

[0133] It should be noted that the MU-MIMO inter-user interference processing capability information involved in 1.1) and 1.2) above is related to the receiver algorithm.

[0134] 1.3) The user equipment supports MU-MIMO inter-user interference processing capability information with modulation order indicated by the network.

[0135] For example, the network indicates that the adjustment order includes 1024QAM (Quadrature Amplitude Modulation), 256QAM, 64QAM, 16QAM, QPSK (Quadrature Phase Shift Keying), etc.

[0136] 1.4) The user equipment supports MU-MIMO inter-user interference processing capability information for which the modulation order is not indicated by the network.

[0137] It should be noted that the above 1.4) means that the user equipment supports blind modulation order detection. In this case, the network still needs to indicate whether the current transmission meets the conditions for the user equipment to perform blind modulation order detection.

[0138] In addition, it should be noted that the MU-MIMO inter-user interference processing capability information involved in the above 1.3) and 1.4) is related to network signaling.

[0139] 1.5) The user equipment supports MU-MIMO inter-user interference processing capability information with a maximum multiplexing data layer being a first specified value.

[0140] 1.6) Information on the MU-MIMO inter-user interference processing capability of the user equipment supporting a maximum number of multiplexed users being a second specified value.

[0141] 1.7) Information on the user equipment's ability to handle MU-MIMO inter-user interference when the precoding granularity of the target user is wideband.

[0142] It should be noted that the precoding granularity of the partial bandwidth i is P′ in the frequency domain BWP.i consecutive RBs (Resource Blocks), P′ BWP.i The value is {2, 4, wideband}. Unless the parameter prb-BundlingType in the high-level signaling PDSCH-Config indicates the PRB (Physical Resource Block) bundling size (i.e. P′ BWP.i ) is 4 or wideband, otherwise P′ BWP.i The value of is 2.

[0143] 1.8) User equipment supports frequency domain resource allocation for multiplexed users

[0144] MU-MIMO inter-user interference processing capability information when the frequency domain resource allocation type is different from that of the target user.

[0145] 1.9) The user equipment supports MU-MIMO inter-user interference handling capability information when the frequency domain resource allocation type of the multiplexing user is Type 0 and the RBG (Resource Block Group) size of the multiplexing user is different from the RBG size of the target user.

[0146] It should be noted that the MU-MIMO inter-user interference processing capability information involved in 1.5) to 1.9) above is related to the complexity of the user equipment.

[0147] 2) The highest modulation order of multiplexed users supported by the user equipment.

[0148] For example, the highest modulation order of multiplexed users includes 1024QAM, 256QAM, 64QAM, 16QAM, QPSK, etc.

[0149] 3) The number of DMRS (Demodulation Reference Signal) ports supported by the user equipment.

[0150] 4) DMRS configuration supported by the user equipment.

[0151] In some embodiments, the DMRS configuration supported by the user equipment includes at least one of a DMRS version, a number of DMRS symbols, and a DMRS type supported by the user equipment.

[0152] In some embodiments, the reporting granularity of the above-mentioned capability information is per user equipment (per UE), per frequency band (per Band), per frequency band combination (per Band Combination), per feature set (per Feature Set) or per feature set per component carrier (per Feature Set per Component Carrier, abbreviated as per FSPC).

[0153] In step 702, the base station determines auxiliary information according to the MU-MIMO receiver-related capability information and network configuration information reported by the user equipment.

[0154] In some embodiments, the network configuration information includes at least one of the following:

[0155] 1) The frequency domain resource allocation type of the multiplexing user is the same as that of the target user, or when the resource allocation type of the multiplexing user is Type 0, the RBG size of the multiplexing user is the same as that of the target user.

[0156] 2) When the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the frequency domain resource allocation of the multiplexed user and the target user is the same.

[0157] 3) When the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the precoding of the multiplexed user is the same as that of the target user.

[0158] In step 703, the base station sends auxiliary information to the user equipment.

[0159] In some embodiments, the auxiliary information includes at least one of the following:

[0160] 1) Reuse the user's DMRS configuration information.

[0161] 2) Whether there is currently reused user information.

[0162] 3) The modulation and coding strategy table information configured by the network side device for the multiplexed user.

[0163] 4) The highest modulation order configured by the network-side equipment for multiplexed users.

[0164] For example, the highest modulation order configured for multiplexed users includes 1024QAM, 256QAM, 64QAM, 16QAM, QPSK, and the like.

[0165] 5) Multiplexing the user's PT-RS (Phase Tracking-Reference Signal) configuration information.

[0166] 6) Multiplexing the user's CSI-RS (Channel State Information-Reference Signal).

[0167] 7) Multiplexing the user's TRS (Tracking Reference Signal) configuration information.

[0168] 8) Multiplexing user time domain resource allocation information.

[0169] 9) Multiplexing user scheduling and resource allocation information.

[0170] In some embodiments, multiplexing user scheduling and resource allocation information includes at least one of the following:

[0171] 9.1) Frequency domain resource allocation type for multiplexed users.

[0172] For example, the frequency domain resource allocation type of the multiplexed user includes Type0 or Type1.

[0173] In some embodiments, when the frequency domain resource allocation type of the multiplexing user is Type 0, the multiplexing user scheduling and resource allocation information also includes at least one of the RBG size information of the multiplexing user, partial wideband (bandwidth) size information of the multiplexing user, and RBG size configuration information of the multiplexing user.

[0174] It should be noted that the user equipment can obtain the RBG size of the multiplexed user according to the partial bandwidth size of the multiplexed user and the RBG size (rbg-Size) configuration of the multiplexed user (rbg-Size in the high-layer signaling PDSCH-Config is configured as Configuration 1 (Configuration 1) or Configuration 2 (Configuration 2)), as shown in Table 1 above.

[0175] 9.2) Whether the frequency domain resource allocation type of the multiplexing user is the same as the frequency domain resource allocation type of the target user.

[0176] 9.3) When the frequency domain resource allocation type of the multiplexing user is Type 0, whether the RBG size of the multiplexing user is the same as the RBG size of the target user.

[0177] 10) Multiplexing user DMRS port information.

[0178] 11) When the precoding granularity of the target user is wideband, the auxiliary information also includes whether the precoding granularity of the multiplexed user is wideband.

[0179] It should be noted that if the auxiliary information includes whether the precoding granularity of the multiplexed user is wideband, or the auxiliary information does not include whether the precoding granularity of the multiplexed user is wideband, it indicates that the target user and the multiplexed user meet the preset network configuration.

[0180] If the auxiliary information includes that the precoding granularity of the multiplexed user is not wideband, it indicates that the target user and the multiplexed user do not meet the preset network configuration.

[0181] 12) When the precoding granularity of the target user is wideband, the auxiliary information also includes whether the resource allocation of the multiplexed user is the same as that of the target user.

[0182] It should be noted that if the auxiliary information includes information that the resource allocation of the multiplexed user is the same as that of the target user, or the auxiliary information does not include information whether the resource allocation of the multiplexed user is the same as that of the target user, it indicates that the target user and the multiplexed user meet the preset network configuration.

[0183] If the auxiliary information includes information that the resource allocation of the reused user is different from that of the target user, it indicates that the target user and the reused user do not meet the preset network configuration.

[0184] 13) When the precoding granularity of the target user is wideband, the auxiliary information also includes whether the precoding of the multiplexed user is the same as that of the target user.

[0185] It should be noted that if the auxiliary information includes information that the precoding of the multiplexed user is the same as that of the target user, or the auxiliary information does not include information whether the precoding of the multiplexed user is the same as that of the target user, it indicates that the target user and the multiplexed user meet the preset network configuration.

[0186] If the auxiliary information includes information that the precoding of the multiplexed user is different from that of the target user, it indicates that the target user and the multiplexed user do not meet the preset network configuration.

[0187] In the MU-MIMO scenario, the present disclosure reports the MU-MIMO receiver-related capability information of the user equipment to the network side device. When the capability of the user equipment and the MU-MIMO scheduling situation do not meet the pre-set network configuration, the network side device informs the user equipment of the receiver on / off information, DMRS port configuration information, multiplexed user modulation order information, multiplexed user time-frequency resource allocation information, etc. through relevant high-level RRC (Radio Resource Control) signaling and / or physical layer data scheduling DCI (Downlink Control Information) signaling, thereby assisting the user equipment to enable inter-user interference suppression / elimination when receiving downlink data. The present disclosure helps the user equipment to effectively improve the reliability of downlink data reception in the MU-MIMO scenario.

[0188] In some embodiments, the functional units described above may be implemented as general-purpose processors, programmable logic controllers (PLC), digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any appropriate combination thereof, for performing the functions described in the present disclosure.

[0189] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

[0190] The description of the present disclosure is provided for purposes of illustration and description and is not intended to be exhaustive or to limit the disclosure to the disclosed form. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present disclosure and to enable those skilled in the art to understand the present disclosure and design various embodiments with various modifications suitable for specific applications.

Claims

1. A capability reporting method, comprising: Report the MU-MIMO receiver capability information of the user equipment to the network side device.

2. The method according to claim 1, wherein The capability information includes at least one of MU-MIMO inter-user interference processing capability information, the highest modulation order of multiplexed users supported by the user equipment, the number of demodulation reference signal DMRS ports supported by the user equipment, and the DMRS configuration supported by the user equipment.

3. The method according to claim 2, wherein: The DMRS configuration supported by the user equipment includes at least one of a DMRS version, a DMRS symbol number, and a DMRS type supported by the user equipment.

4. The method according to claim 2, wherein: The MU-MIMO inter-user interference processing capability information includes the MU-MIMO inter-user interference processing capability information that the user equipment supports based on enhanced minimum mean square error interference rejection combining E-MMSE-IRC, the MU-MIMO inter-user interference processing capability information that supports based on low complexity maximum likelihood reception R-ML, the MU-MIMO inter-user interference processing capability information that supports the modulation order indicated by the network, the MU-MIMO inter-user interference processing capability information that supports the modulation order not indicated by the network, the MU-MIMO inter-user interference processing capability information that supports the maximum multiplexing data layer as the first specified value, and the MU-MIMO inter-user interference processing capability information that supports the maximum multiplexing data layer as the first specified value. The MU-MIMO inter-user interference processing capability information when the number of users is a second specified value, the MU-MIMO inter-user interference processing capability information supported when the precoding granularity of the target user is wideband, the MU-MIMO inter-user interference processing capability information supported when the frequency domain resource allocation type of the multiplexed user is different from the frequency domain resource allocation type of the target user, and the MU-MIMO inter-user interference processing capability information supported when the resource block group RBG size of the multiplexed user is different from the resource block group RBG size of the target user when the frequency domain resource allocation type of the multiplexed user is Type0. At least one of the following.

5. The method according to claim 1, wherein The reporting granularity of the capability information is each user equipment, each frequency band, each frequency band combination, each feature set or each feature set of each carrier component.

6. The method according to claim 1, further comprising: Receive auxiliary information sent by the network side device.

7. The method according to claim 6, wherein: The auxiliary information includes the DMRS configuration information of the multiplexed user, whether there is currently multiplexed user information, the modulation and coding strategy table information configured by the network side device for the multiplexed user, the highest modulation order configured by the network side device for the multiplexed user, the phase tracking reference signal PT-RS configuration information of the multiplexed user, the channel state information reference signal CSI-RS of the multiplexed user, the tracking reference signal TRS configuration information of the multiplexed user, the time domain resource allocation information of the multiplexed user, the scheduling and resource allocation information of the multiplexed user and at least one of the DMRS port information of the multiplexed user.

8. The method according to claim 7, wherein: The multiplexing user scheduling and resource allocation information includes at least one of the frequency domain resource allocation type of the multiplexing user, whether the frequency domain resource allocation type of the multiplexing user is the same as the frequency domain resource allocation type of the target user, and whether the resource block group RBG size of the multiplexing user is the same as the resource block group RBG size of the target user when the frequency domain resource allocation type of the multiplexing user is Type0.

9. The method according to claim 8, wherein When the frequency domain resource allocation type of the multiplexing user is Type 0, the multiplexing user scheduling and resource allocation information also includes at least one of the resource block group RBG size information of the multiplexing user, the partial bandwidth size information of the multiplexing user, and the resource block group RBG size configuration information of the multiplexing user.

10. The method according to claim 7, wherein: When the precoding granularity of the target user is wideband, the auxiliary information further includes whether the precoding granularity of the multiplexed user is wideband.

11. The method according to claim 7, wherein: When the precoding granularity of the target user is wideband, the auxiliary information further includes whether the resource allocation of the multiplexed user is the same as that of the target user.

12. The method according to claim 7, wherein: When the precoding granularity of the target user is wideband, the auxiliary information further includes whether the precoding of the multiplexed user is the same as that of the target user.

13. The method according to any one of claims 1 to 12, wherein The network configuration information of the user equipment includes: the frequency domain resource allocation type of the multiplexing user is the same as the frequency domain resource allocation type of the target user, or when the resource allocation type of the multiplexing user is Type 0, the resource block group RBG size of the multiplexing user is the same as the RBG size of the target user.

14. The method according to any one of claims 1 to 12, wherein The network configuration information of the user equipment includes: when the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the frequency domain resource allocation of the multiplexed user and the target user is the same.

15. The method according to any one of claims 1 to 12, wherein The network configuration information of the user equipment includes: when the precoding granularity of the target user is wideband, the precoding granularity of the multiplexed user is also wideband, and the precoding of the multiplexed user is the same as that of the target user.

16. A user equipment comprising: Memory; A processor is coupled to the memory, and the processor is configured to execute the method according to any one of claims 1 to 15 based on instructions stored in the memory.

17. A communication system comprising: The user equipment according to claim 16; The network-side device is configured to determine auxiliary information according to the MU-MIMO receiver-related capability information and network configuration information reported by the user equipment, and send the auxiliary information to the user equipment.

18. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the method according to any one of claims 1 to 15 is implemented.

19. A computer program product comprising computer instructions, wherein when the computer instructions are executed by a processor, the method according to any one of claims 1 to 15 is implemented.

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