Channel state information acquisition method and apparatus

Abstract

The application provides a channel state information acquisition method and device, and the method comprises the following steps: acquiring channel state information corresponding to a reference signal according to parameters of a control channel resource, and adopting the technical scheme, the problem that there is no technical scheme for acquiring or feeding back channel state information in new radio in the related art is solved, and a scheme suitable for acquiring channel state information in new radio is given.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication, in particular to a channel state information acquisition method and device. BACKGROUND

[0002] At present, high frequency communication is a core technology in new radio (NR) technology, and a core problem of high frequency communication is how to implement beam communication. In beam communication, due to movement and obstruction, the established transmission-reception beam pair cannot communicate. How to detect link performance in a beam communication system and how to quickly recover the link and improve resource utilization are core problems to be solved by the present application.

[0003] Specifically, how to accurately predict the transmission performance of a downlink control channel according to the performance of a measurement reference signal, how to send a beam recovery request to a base station, and how to accurately obtain digital precoding matrix indicator information (PMI) based on beam transmission are core problems to be solved by the present application.

[0004] There is currently no effective solution to the problem of lack of technical solutions for acquiring or feeding back channel state information in new radio in the related art. SUMMARY

[0005] Embodiments of the present application provide a channel state information acquisition method and device to at least solve the problem of lack of technical solutions for acquiring or feeding back channel state information in new radio in the related art.

[0006] According to an embodiment of the present application, a channel state information acquisition method is provided, which includes determining a control channel resource corresponding to a reference signal, and acquiring channel state information corresponding to the reference signal according to parameters of the control channel resource.

[0007] According to another embodiment of the present application, a channel state information acquisition method is also provided, which includes determining a control channel transmission parameter hypothesis according to at least one of the following: an agreed parameter, and parameters of a control channel resource corresponding to a reference signal, and acquiring channel state information of the reference signal according to the control channel transmission parameter hypothesis.

[0008] According to another embodiment of the present application, a channel state detection counter management method is also provided, which includes performing a predetermined operation on a channel state detection counter when a predetermined event is detected.

[0009] According to another embodiment of the present application, a channel state information feedback method is also provided, which comprises: sending signaling information on a dynamically scheduled channel or signal, wherein the signaling information comprises channel state information; and wherein the dynamically scheduled channel or signal is scheduled by physical downlink control information.

[0010] According to another embodiment of the present application, a channel state information feedback method is also provided, which comprises: determining a port subset of a measurement reference signal resource corresponding to each layer; and feeding back precoding matrix indication information obtained based on the port subset.

[0011] According to another embodiment of the present application, a channel quality information obtaining apparatus is also provided, which comprises: a first determining module configured to determine a control channel resource corresponding to a reference signal; and a first obtaining module configured to obtain channel state information corresponding to the reference signal according to a parameter of the control channel resource.

[0012] According to another embodiment of the present application, a channel state information obtaining apparatus is also provided, which comprises: a second determining module configured to determine a control channel transmission parameter hypothesis according to at least one of the following: an agreed parameter, and a parameter of a control channel resource corresponding to a reference signal; and a second obtaining module configured to obtain channel state information of the reference signal according to the control channel transmission parameter hypothesis.

[0013] According to another embodiment of the present application, a channel state detection counter management apparatus is also provided, which comprises: an executing module configured to perform a predetermined operation on a channel state detection counter when it is detected that a predetermined event occurs.

[0014] According to another embodiment of the present application, a channel state information feedback apparatus is also provided, which comprises: a sending module configured to send signaling information on a dynamically scheduled channel or signal, wherein the signaling information comprises channel state information; and wherein the dynamically scheduled channel or signal is scheduled by physical downlink control information.

[0015] According to another embodiment of the present application, a channel state information feedback apparatus is also provided, which comprises: a third determining module configured to determine a port subset of a measurement reference signal resource corresponding to each layer; and a feeding back module configured to feed back precoding matrix indication information obtained based on the port subset.

[0016] According to another embodiment of the present application, a storage medium is also provided, wherein a computer program is stored in the storage medium, and the computer program is configured to execute steps in any of the above method embodiments when running.

[0017] According to still another embodiment of the present application, there is also provided an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.

[0018] According to the present application, the channel state information corresponding to the reference signal is acquired according to the parameters of the control channel resource, and the above technical solution solves the problem that there is no technical solution for acquiring or feeding back channel state information in new radio in the related art, and a scheme suitable for acquiring channel state information in new radio is given. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0020] Figure 1 is a flow chart of a channel state information acquisition method according to an embodiment of the present application;

[0021] Figure 2 is a schematic diagram of detecting dedicated control information in 3 time units in a predetermined time window according to specific embodiment 4 of the present application Figure 1 ;

[0022] Figure 3 is a schematic diagram of detecting dedicated control information in 3 time units in a predetermined time window according to specific embodiment 4 of the present application Figure 2 ;

[0023] Figure 4 is a schematic diagram of detecting dedicated control information in 3 time units in a predetermined time window according to specific embodiment 4 of the present application DETAILED DESCRIPTION

[0024] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0026] Embodiment One

[0027] The embodiment of the present application provides a mobile communication network (including but not limited to a 5G mobile communication network), and a network architecture of the network can include a network side device (for example, a base station) and a terminal. An information transmission method running on the network architecture is provided in the embodiment, and it should be noted that the running environment of the information transmission method provided in the embodiment is not limited to the network architecture.

[0028] A channel state information acquisition method running on the network architecture is provided in the embodiment, Figure 1 is a flowchart of the channel state information acquisition method according to the embodiment of the present application, as shown in the figure, the flow includes the following steps: Figure 1

[0029] Step S102, determining a control channel resource corresponding to a reference signal;

[0030] Step S104, acquiring channel state information corresponding to the reference signal according to parameters of the control channel resource.

[0031] Through the above steps, the problem that there is no technical solution for acquiring or feeding back channel state information in new radio in the related art is solved, and the problem that there is no solution for accurately predicting the performance of a control channel by detecting a reference signal in new radio NR in the related art is further solved, and a solution suitable for acquiring channel state information in new radio is given.

[0032] It should be noted that there is a quasi-co-location (QCL) relationship between the reference signal and the demodulation reference signal of the control channel resource, or the base station informs the control channel resource corresponding to the reference signal through other explicit signaling. Or the base station informs the reference signal corresponding to the control channel resource through other explicit signaling.

[0033] Optionally, the execution subject of the above steps can be a base station, a terminal and the like, but is not limited thereto.

[0034] Optionally, the execution order of step S102 and step S104 can be interchanged, that is, step S104 can be executed first, and then step S102 can be executed.

[0035] Optionally, acquiring the channel state information corresponding to the reference signal according to the parameters of the control channel resource includes: in the case that one reference signal allows corresponding different control channel resources at different time instants, acquiring the channel state information corresponding to the reference signal at different time instants according to the parameters of the different control information resources.

[0036] ​Optionally, the acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource comprises: obtaining a transmission parameter assumption of a physical downlink control channel according to the parameter of the control channel resource; obtaining a hypothetical PDCCH BLER according to the transmission parameter assumption; and obtaining the channel state information according to the hypothetical PDCCH BLER.

[0037] It should be noted that the hypothetical PDCCH BLER is determined according to the transmission parameter assumption and the channel quality measured according to the reference signal, and the channel state information is determined according to the hypothetical PDCCH BLER and a preset rule or formula, such as a relationship between the downlink control channel block error rate BLER and a predetermined threshold, which indicates whether the channel state is good or bad, i.e., the channel state information is used to indicate whether the reliability of transmitting the physical downlink control channel using the reference signal and the parameter of the control channel resource is in a good state or in a bad state.

[0038] Optionally, the acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource comprises one of the following: when the reference signal corresponds to a control channel resource set, acquiring the channel state information corresponding to the reference signal according to the parameter corresponding to the control channel resource set; when the reference signal corresponds to a control channel resource set, each control channel resource in the control channel resource set corresponds to a channel quality, and the channel state information corresponding to the reference signal is acquired according to a plurality of channel qualities corresponding to a plurality of control channel resources in the control channel resource set; when the reference signal corresponds to a control channel resource set, each control channel resource in the control channel resource set corresponds to a channel state detection counter, and the channel state information corresponding to the reference signal is acquired according to a plurality of channel state detection counters corresponding to a plurality of control channel resources in the control channel resource set; wherein the control channel resource set includes one or more control channel resources.

[0039] Optionally, the method further comprises one of the following:

[0040] When the reference signal corresponds to a control channel resource set, the acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource comprises: determining that the parameter corresponding to the control channel resource set is a parameter corresponding to a predetermined control channel resource in the control channel resource set, and acquiring the channel state information corresponding to the reference signal according to the parameter corresponding to the predetermined control channel resource;

[0041] When the reference signal corresponds to a control channel resource set, the channel state information corresponding to the reference signal is obtained according to parameters corresponding to the control channel resource set, including: determining that the parameters corresponding to the control channel resource set are parameters that satisfy a first predetermined condition in a set of parameters of each control channel resource in the control channel resource set; and obtaining the channel state information corresponding to the reference signal according to the parameters that satisfy the first predetermined condition.

[0042] The channel state information corresponding to the reference signal is obtained according to the channel qualities corresponding to the plurality of control channel resources in the control channel resource set, including: obtaining the channel state information of the reference signal according to a result of determining whether the channel qualities corresponding to the plurality of control channel resources in the control channel resource set satisfy a second predetermined condition.

[0043] The channel state information corresponding to the reference signal is obtained according to the channel state detection counters corresponding to the plurality of control channel resources in the control channel resource set, including: obtaining the channel state information of the reference signal according to a result of determining whether the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set satisfy a third predetermined condition.

[0044] The channel state information corresponding to the reference signal is obtained according to the channel state detection counters corresponding to the plurality of control channel resources in the control channel resource set, including: obtaining the channel state information of the reference signal according to a minimum value of the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set.

[0045] The channel state information corresponding to the reference signal is obtained according to the channel state detection counters corresponding to the plurality of control channel resources in the control channel resource set, including: obtaining the channel state information of the reference signal according to a maximum value of the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set.

[0046] Optionally, the method further includes at least one of the following: detecting a control channel on the control channel resource; and obtaining the parameters of the control channel resource through received signaling information before obtaining the channel state information corresponding to the reference signal according to the parameters of the control channel resource.

[0047] Optionally, according to the parameter of the control channel resource, the obtaining of the channel state information corresponding to the reference signal comprises: setting a channel state detection counter corresponding to the reference signal according to a channel quality corresponding to the reference signal, and determining the channel state information corresponding to the reference signal according to the channel state detection counter; wherein the channel state detection counter comprises at least one of the following: the quasi co-location (QCL) parameter information of the control channel resource is reconfigured once, and the channel state detection counter is cleared once; wherein the QCL parameter of the control channel indicates a reference signal satisfying a quasi co-location (QCL) relationship with a demodulation reference signal of the control channel, and in the present application, it is indicated that the channel large-scale characteristics of one reference signal can be obtained from the large-scale information of another reference signal, wherein the large-scale information comprises at least one of the following information: Doppler shift, Doppler spread, average delay, delay spread, and Spatial Rx Parameter.

[0048] The QCL reference signal in the QCL parameter of the control channel resource is changed, and the channel state detection counter is cleared once.

[0049] The control channel resource set comprises one or more control channel resources. When the reference signal corresponds to one control channel resource set, each control channel resource in the control channel resource set corresponds to a channel state detection counter, and the channel state information corresponding to the reference signal is obtained according to the plurality of channel state detection counters corresponding to the plurality of control channel resources in the control channel resource set.

[0050] The obtaining of the channel state information corresponding to the reference signal according to the plurality of channel state detection counters corresponding to the plurality of control channel resources in the control channel resource set comprises one of the following:

[0051] According to the judgment result of whether the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set satisfy a third predetermined condition, the channel state information of the reference signal is obtained.

[0052] According to the minimum value of the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set, the channel state information of the reference signal is obtained.

[0053] According to the maximum value of the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set, the channel state information of the reference signal is obtained.

[0054] Optionally, the acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource comprises: setting a channel state detection counter corresponding to the reference signal according to a channel quality corresponding to the reference signal, and determining the channel state information corresponding to the reference signal according to the channel state detection counter; wherein the channel state detection counter comprises at least one of the following: the configuration information of the control channel resource is reconfigured once, and the channel state detection counter is cleared once; the configuration information of the reference signal is reconfigured once, and the channel state detection counter is cleared once.

[0055] The control channel resource set comprises one or more control channel resources. When the reference signal corresponds to one control channel resource set, each control channel resource in the control channel resource set corresponds to a channel state detection counter, and the channel state information corresponding to the reference signal is acquired according to the plurality of channel state detection counters corresponding to the plurality of control channel resources in the control channel resource set.

[0056] The acquiring the channel state information corresponding to the reference signal according to the plurality of channel state detection counters corresponding to the plurality of control channel resources in the control channel resource set comprises one of the following:

[0057] The channel state information of the reference signal is acquired according to whether the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set satisfies a third predetermined condition;

[0058] The channel state information of the reference signal is acquired according to the minimum value of the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set;

[0059] The channel state information of the reference signal is acquired according to the maximum value of the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set.

[0060] Optionally, after the channel state information corresponding to the reference signal is acquired, the method further comprises: feeding back the channel state information when it is determined that the channel state information satisfies a fourth predetermined condition.

[0061] Optionally, when the channel state information of a plurality of reference signals needs to be detected, the method further comprises at least one of the following:

[0062] In the case that each reference signal corresponds to one control channel resource or one control channel resource set, the channel state information of each reference signal is acquired according to the control channel resource or the control channel resource set corresponding to each reference signal respectively;

[0063] When one control channel resource corresponds to multiple reference signals, a mapping mode between the demodulation reference signal of the control channel and the multiple reference signals is determined according to at least one of a convention rule and signaling information, and channel state information corresponding to the multiple reference signals is obtained according to the mapping mode.

[0064] A mapping relationship between a layer and the multiple reference signals is determined according to at least one of a convention rule and signaling information, and channel state information corresponding to the multiple reference signals is obtained according to the mapping relationship.

[0065] A mapping relationship between the demodulation reference signal of the control channel and the multiple reference signals is determined according to a convention rule and / or signaling information, and channel state information corresponding to the multiple reference signals is obtained according to the mapping relationship.

[0066] Optionally, the parameters of the control channel resource include at least one of the following:

[0067] Aggregation degree;

[0068] Downlink control information format information, such as the type of DCI format that needs to be detected on the control channel resource;

[0069] The number of candidate control channels, such as the number of candidate control channels that need to be detected on one aggregation degree of the control channel resource;

[0070] Mapping mode of control channel element (CCE) to resource group (REG);

[0071] Precoding block granularity;

[0072] Frequency domain information, such as frequency domain bandwidth information corresponding to the control channel resource;

[0073] Time domain information, such as at least one of the following information corresponding to the control channel resource: time domain symbol number information, slot information;

[0074] Resource unit bundle size;

[0075] Offset when interleaving in the bundle size of the resource unit;

[0076] Transmission control indicator (TCI);

[0077] Reference signal satisfying a quasi-co-location (QCL) relationship with the demodulation reference signal of the control channel resource;

[0078] whether a predetermined field is included in the control information included in the control channel resource;

[0079] a power difference between the reference signal and the control information in the control channel resource;

[0080] a power difference between the reference signal and a demodulation reference signal of the control channel resource;

[0081] a power difference between the control information in the control channel resource and a demodulation reference signal of the control channel resource;

[0082] a cyclic prefix (CP) length;

[0083] a subcarrier spacing;

[0084] related information of a demodulation reference signal (the related information can include transmission mode information of the demodulation reference signal and port number information of the demodulation reference signal);

[0085] a transmission mode of control channel information.

[0086] According to another embodiment of the present application, a method for acquiring channel state information is also provided, and the method comprises the following steps:

[0087] In step one, a control channel transmission parameter hypothesis is determined according to at least one of the following: an agreed parameter and a parameter of a control channel resource corresponding to the reference signal;

[0088] In step two, channel state information of the reference signal is acquired according to the control channel transmission parameter hypothesis.

[0089] By using the above technical solution, the problem that there is no technical solution for acquiring or feeding back channel state information in new radio in the related art is solved, and the problem that there is no solution for how to detect the performance of a control channel based on beam transmission in new radio NR in the related art is further solved, such as how to accurately predict the performance of the control channel by detecting the reference signal, and a solution for acquiring channel state information suitable for new radio is given.

[0090] Optionally, the parameter includes at least one of the following parameters:

[0091] a degree of polymerization, downlink control information format indication information, a number of candidate control channels, a mapping manner of a control channel element (CCE) to a resource group (REG), a precoding block granularity, frequency domain information, time domain information, a bundle size of a resource unit, an offset when interleaving in the size of the bundle size of the resource unit, a TCI, and a reference signal satisfying a QCL relationship with a demodulation reference signal of the control channel resource, whether a predetermined field is included in control information included in the control channel resource, a power difference between the reference signal and the control information in the control channel resource, a power difference between the reference signal and a demodulation reference signal of the control channel resource, a power difference between the control information in the control channel resource and the demodulation reference signal of the control channel resource, a CP length, a subcarrier spacing, a transmission manner of a demodulation reference signal, a transmission mode of control channel information, a mapping relationship between a demodulation reference signal of the control channel and Y reference signals, and a mapping relationship between layers and the Y reference signals, where Y is a positive integer.

[0092] Optionally, the control channel resource includes at least one of the following:

[0093] detecting a control channel on the control channel resource;

[0094] According to the parameters of the control channel resource, the parameters of the control channel resource are obtained through received signaling information before the channel state information corresponding to the reference signal is obtained.

[0095] Optionally, according to the agreed parameters and / or the parameters of the control channel resource corresponding to the reference signal, determining the control channel transmission parameter assumption includes at least one of the following:

[0096] When the reference signal does not have a corresponding control channel resource, the agreed parameters are used to determine the transmission parameter assumption of the control channel, wherein the agreed parameters include at least one of the following: a power difference between the reference signal and the control information in the control channel resource, a power difference between the reference signal and a demodulation reference signal of the control channel resource, a power difference between the control information in the control channel resource and the demodulation reference signal of the control channel resource, a transmission mode of control channel information, a mapping relationship between a demodulation reference signal of the control channel and Y reference signals, and a mapping relationship between layers and the Y reference signals, where Y is a positive integer;

[0097] According to the first parameter of the control channel resource corresponding to the reference signal, a second transmission parameter assumption of the control channel is obtained according to an agreed rule;

[0098] According to the second parameter of the control channel resource corresponding to the reference signal, a range of the second transmission parameter assumption of the control channel is obtained according to an agreed rule.

[0099] According to another embodiment of the present application, a method for managing a channel state detection counter is also provided, the method comprising the following steps:

[0100] Step one, when a predetermined event occurs, performing a predetermined operation on the channel state detection counter. It needs to be added that the channel state information represents the relationship between the channel quality and the predetermined threshold, and here the predetermined operation can be performed on the channel state detection counter when the predetermined event occurs. The predetermined threshold can be configured by the base station, or can be determined according to a predetermined rule. The channel state counter can be referred to as a channel quality counter, or other equivalent names, which does not affect the creativity of the present application.

[0101] By using the above technical solution, the problem of lacking a technical solution for obtaining channel state information or feeding back channel state information in new radio in the related art is solved, and the problem of lacking a solution for how to detect beam performance when transmitting based on a beam in new radio NR in the related art is further solved, and a solution suitable for obtaining channel state information in new radio is given.

[0102] Optionally, the predetermined operation includes one of the following operations: the channel state detection counter is cleared; the channel state detection counter is subtracted by a predetermined number; and the channel state detection counter is prohibited from continuous counting after the predetermined event occurs.

[0103] Optionally, the predetermined event includes at least one of the following events:

[0104] The parameters of the control channel resource are reconfigured;

[0105] Control information is successfully detected on the physical control channel;

[0106] Control information is successfully detected on the physical control channel for at least N time units;

[0107] Control information is successfully detected on the physical control channel for at least M consecutive time units;

[0108] Specific control information is successfully detected on the physical control channel;

[0109] The channel quality of the reference signal is higher than a first predetermined threshold in at least L consecutive evaluation windows;

[0110] The channel quality corresponding to at least P evaluation windows of the reference signal in a predetermined time window is higher than a second predetermined threshold;

[0111] The configuration information of the reference signal is reconfigured;

[0112] a channel quality of at least Q reference signals in the predetermined reference signal set is higher than a third predetermined threshold value;

[0113] wherein the channel quality is obtained according to the reference signals, one of the evaluation windows corresponds to one channel evaluation of the reference signals; and N, M, L, P, and Q are positive integers.

[0114] Optionally, the predetermined event is that a parameter of the control channel resource is reconfigured, including at least one of the following: a QCL parameter of the control channel resource is reconfigured; and a parameter of the control channel resource corresponding to the channel state detection counter is reconfigured.

[0115] Optionally, the channel state detection counter includes at least one of the following:

[0116] The channel state detection counter corresponds to one reference signal.

[0117] The channel state detection counter corresponds to one reference signal set.

[0118] The channel state detection counter is a channel state counter whose channel quality is lower than a predetermined threshold value.

[0119] The channel state detection counter is a counter whose channel quality is lower than a predetermined threshold value.

[0120] According to another embodiment of the present application, a channel state information feedback method is also provided, and the method includes the following steps:

[0121] Step 1: sending signaling information on a dynamically scheduled channel or signal, wherein the signaling information includes channel state information; and wherein the dynamically scheduled channel or signal is scheduled by physical downlink control information.

[0122] By using the above technical solution, the problem of lacking a technical solution for obtaining or feeding back channel state information in new radio in the related art is solved, and the problem of lacking a solution for how to quickly recover a link when beam transmission is based on new radio NR in the related art is further solved. A solution for feeding back channel state information suitable for new radio is given.

[0123] Optionally, the signaling information is used to indicate at least one of the following information:

[0124] The first information is used to indicate that the performance of the reference signals in the reference signal set 1 is lower than a predetermined threshold value.

[0125] The second information is used to indicate that at least X reference signals in the reference signal set 2 have a quality higher than a predetermined threshold value.

[0126] The third information is used for indicating the indication information of the reference signal in the reference signal set 2 whose quality is higher than a predetermined threshold value.

[0127] The fourth information includes the beam recovery request information.

[0128] The fifth information is used for indicating that the beam recovery request information has been sent at least once before.

[0129] The sixth information is the measurement reference signal resource request information, including the measurement reference signal resource number information.

[0130] The seventh information is the measurement reference signal resource type request information, such as the measurement reference signal is used for sending the beam training and / or receiving the beam training. When the measurement reference signal is used for sending the beam training, there is no QCL relationship between the requested multiple measurement reference signal resources, or the transmission beams of the base stations corresponding to the requested multiple measurement reference signal resources are the same. When the measurement reference signal is used for receiving the beam training, there is the QCL relationship between the requested multiple measurement reference signal resources, or the transmission beams of the base stations corresponding to the requested multiple measurement reference signal resources are different. The type information can also be the uplink measurement reference signal and the downlink measurement reference signal.

[0131] Wherein, X is a positive integer.

[0132] Optionally, the signaling information is sent on the dynamically scheduled channel or signal, including at least one of the following:

[0133] When the dynamically scheduled channel or signal is located in the first predetermined time unit, the signaling information is sent on the dynamically scheduled channel or signal.

[0134] When the dynamically scheduled channel or signal is located in the first predetermined frequency domain resource, the signaling information is sent on the dynamically scheduled channel or signal.

[0135] When the physical downlink control information is located in the second predetermined time unit, the signaling information is sent on the dynamically scheduled channel or signal.

[0136] When the physical downlink control information is located in the second predetermined frequency domain resource, the signaling information is sent on the dynamically scheduled channel or signal.

[0137] Optionally, the method includes at least one of the following features: the information of the first or second predetermined time unit is included in the received first signaling information; the information of the first or second predetermined frequency domain resource is included in the received second signaling information.

[0138] Optionally, the channel comprises at least one of: an uplink physical data channel, an uplink aperiodic control channel, an uplink control channel for feeding back an acknowledgement (ACK) or negative acknowledgement (NACK) corresponding to a downlink data channel.

[0139] The signal comprises at least an aperiodic SRS.

[0140] According to another embodiment of the present application, there is also provided a method for feeding back information state information, comprising the following steps:

[0141] Step one: determining a port subset of a measurement reference signal resource corresponding to each layer (for example, a measurement reference signal resource has 8 ports, layer 1 corresponds to 2 ports of the reference signal resource, layer 2 corresponds to 4 ports of the reference signal resource, and layer 3 corresponds to 8 ports of the reference signal resource);

[0142] Step two: feeding back precoding matrix indication information obtained based on the port subset (it is to be noted that the precoding matrix indication information is one of channel state information, and the precoding matrix indication information can also be referred to as PMI (Precoding Matrix Indicator) information).

[0143] By using the above technical solution, the problem that there is no technical solution for obtaining or feeding back channel state information in new radio in the related art is solved, and the problem of how to obtain a precoding matrix when different beam combinations corresponding to different layers in new radio (NR) based on beam transmission is further solved in the related art. A scheme for feeding back channel state information suitable for new radio is given.

[0144] Optionally, determining the port subset of the measurement reference signal resource corresponding to each layer comprises at least one of the following:

[0145] The port subset corresponding to each layer is included in received signaling information.

[0146] The port subset corresponding to each layer is obtained through a convention rule.

[0147] The number of ports included in the port subset corresponding to one layer is greater than or equal to the layer (for example, the number of ports included in the port subset corresponding to layer 3 is 8).

[0148] Optionally, feeding back the precoding matrix indication information obtained based on the port subset comprises at least one of the following: feeding back a rank (RI) and precoding matrix indication information corresponding to the RI; for each layer supported by the measurement reference signal resource, feeding back precoding matrix indication information obtained based on the port subset corresponding to the layer.

[0149] The application will be described in detail below with reference to the preferred embodiments. Embodiment 1

[0151] In the beam recovery process, a reference signal related to a control channel needs to be detected, and channel quality detection information is obtained according to the quality of the reference signal.

[0152] Specifically, in the beam recovery process, the terminal needs to detect the CSI-RS / SSB / DMRS (i.e., the reference signal) associated with the control channel resource CORESET, obtain the SINR (Signal interference noise ratio) according to the CSI-RS / SSB / DMRS, obtain the Hypothetical PDCCH BLER according to the SINR, and obtain the Hypothetical PDCCH BLER according to the SINR. Different assumptions of transmission parameters of the Hypothetical PDCCH BLER result in different Hypothetical PDCCH BLER, so before obtaining the Hypothetical PDCCH BLER, the assumption of the transmission parameters of the PDCCH needs to be confirmed.

[0153] In this embodiment, the terminal first determines the control channel resource associated with the reference signal, obtains the PDCCH transmission parameter assumption according to the parameter configuration information of the control channel resource, and obtains the Hypothetical PDCCH BLER according to the PDCCH transmission parameter assumption. The control channel resource can be one of the following: one CORESET (control resource set), one search space, one candidate control channel, one CCE, one REG, one REG bundle, and one DCI format.

[0154] Specifically, for example, the terminal needs to detect CSI-RS1, CSI-RS1 and CORESET1 are associated, for example, there is a QCL relationship between the DMRS transmitted in CORESET1 and CSI-RS1, for example, the TCI-StatesPDCCH parameter in the configuration information of CORESET in NR (that is, the TCI field, which is the relevant parameter of configuring CORESET, not the TCI field included in the DCI transmitted in CORESET, the TCI field included in the DCI is used to indicate the QCL relationship information of the channel or signal scheduled by the DCI, such as the TCI field in the DCI used to indicate the QCL relationship of PDCCH / CSI-RS / SRS / PUSCH) is used to configure the QCL relationship between the DMRS transmitted in CORESET1 and CSI-RS1, or the base station explicitly configures the association between CSI-RS1 and CORESET1, the terminal obtains SINR according to CSI-RS1, and further obtains Hypothetical PDCCH BLER according to the transmission parameter assumption of PDCCH in Table 1, which is according to the specific embodiment 1. According to whether the Hypothetical PDCCH BLER is lower than a predetermined threshold, it is determined whether the channel quality corresponding to the reference signal is Qin. For example, when the Hypothetical PDCCH BLER obtained based on the transmission parameter assumption of Table 1 is lower than 2%, it is determined that the channel quality of the reference signal is in the Qin state. It is pointed out here that the larger the BLER, the worse the corresponding channel quality. As can be seen from Table 1, the transmission parameter assumption of PDCCH is obtained according to the configuration parameters of CORESET1 corresponding to CSI-RS1. Among them, the aggregation degree corresponding to one CORESET is the aggregation degree of the candidate control channel whose number is greater than 0 of the CORESET, and for each CORESET, the candidate control channel corresponding to each aggregation degree of this CORESET is configured. When the number of candidate control channels corresponding to one aggregation degree of this CORESET is 0, the aggregation degree does not belong to the aggregation degree corresponding to the CORESET. Among them. Or according to the configuration information of the search space corresponding to the CORESET, the aggregation degree corresponding to the CORESET is obtained, for example, the CORESET corresponds to one search space, and the configuration information of the search space includes the number information of the candidate control channel under each aggregation degree. The aggregation degree of the candidate channel whose number is greater than 0 is the aggregation degree corresponding to the CORESET. Among them, the number information of the candidate channel corresponding to CORESET1 can be configured in the configuration information of the search space included in CORESET.

[0155] Table 1

[0156]

[0157]

[0158] Where the mapping of CCE-to-REG includes interleaved and non-interleaved. The REGs contained in a CORESET are numbered, and then a Bundle is formed with consecutive L REGs, i.e., Bundle i corresponds to {REG i*L, REG i*L+1,..., REG i*L+L-1}, and CCEj corresponds to {f(N*j / L), f(N*j / L+1),..., f(N*j / L+N / L-1)}, where N is the number of REGs included in a CCE.

[0159] When the mapping of CCE-to-REG is non-interleaved, L = 6, f(j) = j, and when the mapping of CCE-to-REG is interleaved, f(j) satisfies the following formula:

[0160]

[0161] j = cR + r;

[0162] r = 0, 1,..., R-1;

[0163] c = 0, 1,..., C-1

[0164]

[0165] Where R belongs to {2, 3, 6} and is configured by higher layers. Or R belongs to a common divisor of N greater than 1, i.e., N can be divided by R, and R is an integer greater than 1. shift According to the cell identification number or according to the high layer configuration information. The mapping of CCE-to-REG of CORESET1 can be determined by the configuration parameter CORESET-CCE-to-REG-mapping-type in NR.

[0166] Where the Bundle size is L in the above CCE-to-REG description, i.e., a Bundle block includes L REGs, which can be determined by the configuration parameter CORESET-REG-bundle-size in NR. The bundle size offset is n in the above CCE-to-REG description, which can be determined by the configuration parameter CORESET-REG-bundle-offset in NR. shiftThe number of time-domain symbols corresponding to CORESET1 can be determined by the configuration parameter CORESET-time-duration in NR. The transmission mode of DMRS includes at least one of the following modes: DMRS is only transmitted in DCI, DMRS is transmitted in the CORESET where the DCI is located, DMRS is only transmitted in part of the REG contained in the DCI, and DMRS is transmitted in all REG contained in the DCI, such as the transmission mode of DMRS is determined by CORESET-precoder-granularity in NR.

[0167] The above is to obtain the Hypothetical PDCCH BLER corresponding to CSI-RS1 according to Table 1, and then determine whether the Hypothetical PDCCH BLER is lower than 2% (2% is only an example, and can be other predetermined threshold), and then determine whether the channel quality corresponding to CSI-RS1 belongs to Qin mode, such as the Hypothetical PDCCH BLER lower than 2% is Qin mode. That is, when the base station transmits PDCCH based on CSI-RS1, a relatively high reliability can be obtained.

[0168] Further, the terminal can obtain the Hypothetical PDCCH BLER corresponding to CSI-RS1 based on Table 2, which is Table 2 according to Embodiment 1, and then determine whether the Hypothetical PDCCH BLER is higher than 10% (10% is only an example, and can be other predetermined threshold), and then determine whether the channel quality corresponding to CSI-RS1 belongs to Qout mode, such as the Hypothetical PDCCH BLER higher than 10% is Qout mode. That is, when the base station transmits PDCCH based on CSI-RS1, the reliability is relatively poor.

[0169] Further, when the terminal determines that the channel quality of CSI-RS1 satisfies the Qin mode, the information is fed back to the base station or the high layer of the terminal. When the terminal determines that the channel quality of CSI-RS1 satisfies the Qout mode, the information is fed back to the base station or the high layer of the terminal.

[0170] Table 2

[0171]

[0172]

[0173] When one CORESET corresponds to multiple values of a type of parameter in Table 1 and Table 2, the above embodiments take the maximum or minimum value, such as when one CORESET corresponds to multiple aggregation levels, Table 1 takes the lowest aggregation level, and Table 2 takes the highest aggregation level. Of course, the above embodiments are only examples, and this embodiment does not exclude other value conditions, such as taking the first aggregation level, where the first aggregation level corresponds to the smallest number of candidate control channels. Or take the second aggregation level, where the second aggregation level corresponds to the largest number of candidate control channels.

[0174] In the above embodiments, the transmission parameter assumptions for the PDCCH are all obtained based on the parameters of the control channel resources corresponding to the measurement reference signals. This embodiment does not exclude that part of the transmission parameter assumptions for the PDCCH are obtained based on the parameters of the control channel resources corresponding to the measurement reference signals, and part are obtained according to a predetermined value. For example, part of the following parameters are obtained based on the parameters of the control channel resources corresponding to the measurement reference signals, and part are predetermined values. The parameters include at least one or more of the following parameters: aggregation level, DCI format, number of candidate control channels, mapping method of control channel elements (CCE) to resource groups (Resource element group), precoding block granularity, frequency domain information, time domain information, bundle size, offset when interleaving by bundle size, TCI, whether the control information included in the control channel resources includes a predetermined field (such as whether the TCI field exists in the control information included in the control channel resources, of course, it can also be other specific fields), power difference between the reference signal and the control information in the control channel resources (the power of the control channel resources is the power on the resource transmitting the control information in the control channel resources), power difference between the reference signal and the demodulation reference signal of the control channel resources, power difference between the control information in the control channel resources and the demodulation reference signal of the control channel resources, CP length, subcarrier spacing.

[0175] When the terminal needs to detect multiple reference signals, the control channel resources corresponding to different reference signals may be different, so the PDCCH transmission parameter assumptions corresponding to different reference signals will be different. The terminal obtains the Hypothetical PDCCH BLER corresponding to each reference signal according to the PDCCH transmission parameter assumptions corresponding to each reference signal. Specific embodiment 2

[0177] In this embodiment, similar to embodiment 1, the terminal obtains the channel quality detection information corresponding to the reference signal according to the control channel resource corresponding to the reference signal. This embodiment describes how to obtain the channel quality detection information corresponding to the reference signal when the one reference signal corresponds to more than one control channel resource.

[0178] According to the parameters of the plurality of control resources corresponding to the one reference signal, obtain the PDCCH transmission parameter assumption, and according to the PDCCH transmission parameter assumption, obtain the Hypothetical PDCCH BLER. The one control channel resource can be one of the following: one CORESET (control resource set), one search space, one candidate control channel, one CCE, one REG, one REG bundle, and one DCI format.

[0179] Specifically, for example, CSI-RS1 corresponds to CORESET1 and CORESET2, for example, in the QCL configuration parameters of CORESET1, the DMRS in CORESET1 and the CSI-RS1 satisfy the QCL relationship with respect to a type of channel characteristics, and in the QCL configuration parameters of CORESET2, the DMRS in CORESET2 and the CSI-RS1 also satisfy the QCL relationship with respect to a type of channel characteristics, for example, in NR, the QCL relationship configuration in CORESET is determined by the CORESET configuration parameter TCI-StatesPDCCH field.

[0180] Of course, it can also be indicated by other explicit signaling that CSI-RS1 corresponds to the set {CORESET1, CORESET2}.

[0181] At this time, when obtaining the Hypothetical PDCCH BLER according to the CSI-RS1, the PDCCH transmission parameter assumption needs to be determined according to the parameters of CORESET1 and CORESET2. That is, the PDCCH transmission parameter assumption needs to be determined according to the parameters of the plurality of control channel resources of the control channel resource set corresponding to the reference signal.

[0182] For example, the terminal obtains the Hypothetical PDCCH BLER corresponding to CSI-RS1 according to Table 3, which is a schematic table one according to a specific embodiment 2, and then judges whether the Hypothetical PDCCH BLER is lower than 2% (2% is only an example, and can be other predetermined threshold), and then judges whether the channel quality corresponding to CSI-RS1 belongs to Qin mode, for example, the Hypothetical PDCCH BLER is lower than 2% is Qin mode, that is, when the base station transmits PDCCH based on CSI-RS1, a relatively high reliability can be obtained.

[0183] Table 3

[0184]

[0185]

[0186] The CORESET set is a set composed of CORESETs corresponding to the reference signal, such as {CORESET1, CORESET2} corresponding to CSI-RS1 as described above, wherein the parameters corresponding to the CORESET set can be obtained in one of the following ways:

[0187] Method one: the CORESET parameters corresponding to the predetermined CORESET ID in the CORESET set are obtained, such as the precoding resource granularity corresponding to the CORESET set, which is the precoding resource granularity corresponding to the lowest CORESET ID (or the highest CORESET ID) in the CORESET set; other parameters corresponding to the CORESET set can be obtained in a similar way, which is not described here.

[0188] Method two: all similar parameters corresponding to all CORESETs in the CORESET set are found to satisfy the predetermined condition. For example, the precoding granularity corresponding to the CORESET set is the smallest precoding resource granularity in the multiple precoding resource granularities corresponding to each CORESET in the CORESET set.

[0189] Or for example, the aggregation degree corresponding to the CORESET set is the lowest aggregation degree in the set of aggregation degrees corresponding to each CORESET in the CORESET set. Other parameters corresponding to the CORESET set can be obtained in a similar way, which is not described here.

[0190] Further, the terminal can obtain the Hypothetical PDCCH BLER corresponding to the CSI-RS1 based on Table 4, which is Table 2 according to Embodiment 2, and then determine whether the Hypothetical PDCCH BLER is higher than 10% (10% is only an example, and can be another predetermined threshold), and then determine whether the channel quality corresponding to the CSI-RS1 belongs to the Qout mode, such as the Hypothetical PDCCH BLER higher than 10% is the Qout mode, which means that the reliability of the base station transmitting the PDCCH based on the CSI-RS1 is relatively poor.

[0191] Table 4

[0192]

[0193]

[0194]

[0195] Embodiment 3

[0197] In this embodiment, similar to Embodiment 1, the terminal obtains the channel quality detection information corresponding to the reference signal according to the control channel resource corresponding to the reference signal. This embodiment describes how to obtain the channel quality detection information corresponding to the reference signal when the one reference signal corresponds to more than one control channel resource.

[0198] determining a control channel resource set corresponding to one reference signal, wherein the control channel resource set includes one or more control channel resources;

[0199] Each control channel resource in the control channel resource set corresponds to a counter, or each control channel resource in the control channel resource set corresponds to a channel quality.

[0200] obtaining the channel quality detection information corresponding to the one reference signal according to whether the plurality of counters in the predetermined time window satisfy a predetermined condition, or obtaining the channel quality corresponding to the one reference signal according to the channel quality corresponding to the plurality of control channel resources in the control channel resource set.

[0201] Specifically, for example, CSI-RS1 corresponds to CORESET1 and CORESET2, for example, in the QCL configuration parameters of CORESET1, the DMRS in CORESET1 and CSI-RS1 satisfy the QCL relationship with respect to a type of channel characteristics, and in the QCL configuration parameters of CORESET2, the DMRS in CORESET2 and CSI-RS1 also satisfy the QCL relationship with respect to a type of channel characteristics, wherein the QCL relationship configuration in the CORESET is determined by the CORESET configuration parameter TCI-StatesPDCCH field.

[0202] Of course, CSI-RS1 can also be informed of correspondence with the set {CORESET1, CORESET2} through other explicit signaling.

[0203] At this time, one SINR is obtained according to the evaluation of CSI-RS1 once, and a Hypothetical PDCCH BLER is obtained based on the parameters of CORESET1, such as BLER1, and then a Hypothetical PDCCH BLER is obtained based on the SINR of CSI-RS1 and the parameters of CORESET2, such as BLER2.

[0204] At this time, the channel quality information of CSI-RS1 can be obtained in one of the following ways:

[0205] Method one: when BLER1 is higher than the first predetermined threshold and BLER2 is also higher than the first predetermined threshold, it is judged that the channel quality of the reference signal in the current evaluation belongs to Qout, such as the counter of Qout of the reference signal is increased by 1,

[0206] Or when at least one of BLER1 and BLER2 is lower than the second predetermined threshold, it is judged that the channel quality of the reference signal in the current evaluation belongs to Qin, such as the Qin counter corresponding to the reference signal is increased by 1.

[0207] In the second mode, for one evaluation of the CSI-RS1, the channel quality corresponding to the CORESET1 is determined based on the relationship between the BLER1 and the first predetermined threshold, such as when the BLER1 is higher than the first predetermined threshold, the Qout counter corresponding to the CORESET1 is increased by 1 (referred to as counter 1), and the channel quality corresponding to the CORESET2 is determined based on the relationship between the BLER2 and the first predetermined threshold, such as when the BLER2 is higher than the first predetermined threshold, the Qout counter corresponding to the CORESET2 is increased by 1 (referred to as counter 2). Then, whether the two counters corresponding to the CORESET1 and the CORESET2 satisfy the predetermined condition in the predetermined time window (in the predetermined window, one or more channel evaluations of the CSI-RS1 are included) to obtain the channel quality determination result of the reference signal, such as only when the counter 1 and the counter 2 are greater than the predetermined number of times, the channel quality of the reference signal is determined as Qout.

[0208] Or for one evaluation of the CSI-RS1, the channel quality corresponding to the CORESET1 is determined based on the relationship between the BLER1 and the second predetermined threshold, such as when the BLER1 is lower than the second predetermined threshold, the Qin counter corresponding to the CORESET1 is increased by 1 (referred to as counter 3), and the channel quality corresponding to the CORESET2 is determined based on the relationship between the BLER2 and the second predetermined threshold, such as when the BLER2 is lower than the first predetermined threshold, the Qin counter corresponding to the CORESET2 is increased by 1 (referred to as counter 4). Then, whether the two counters corresponding to the CORESET1 and the CORESET2 satisfy the predetermined condition in the predetermined time window (in the predetermined window, one or more channel evaluations of the CSI-RS1 are included) to obtain the channel quality determination result of the reference signal, such as when at least one of the counter 3 and the counter 4 is greater than the predetermined number of times, the channel quality of the reference signal is determined as Qin.

[0209] At this time, when the Hypothetical PDCCH BLER is obtained according to the CSI-RS1, the transmission parameters of the PDCCH need to be determined according to the parameters of the CORESET1 and the CORESET2. That is, the transmission parameters of the PDCCH need to be determined according to the parameters of the multiple control channel resources of the control channel resource set corresponding to the reference signal. Or the multiple control channel resources corresponding to the CSI-RS1 correspond to one channel quality respectively, or correspond to one channel quality counter respectively, whether the multiple channel qualities corresponding to the multiple control channel resources satisfy the predetermined condition to obtain the channel quality detection information corresponding to the CSI-RS1, or whether the multiple channel quality counters corresponding to the multiple control channel resources satisfy the predetermined condition to obtain the channel quality detection information corresponding to the CSI-RS1. Embodiment 4

[0211] In this embodiment, the terminal performs beam detection, detects whether the performance of the signals in the reference signal set 1 is lower than the fourth predetermined value, and / or detects whether the performance of the signals in the reference signal set 2 is higher than the fifth predetermined value, when detecting that the performance of each reference signal in the reference signal set 1 is lower than the fourth predetermined value, the terminal considers that a beam failure occurs once, and adds 1 to the beam failure counter. When the counter is greater than a predetermined number, the terminal reports a beam recovery request information to the base station, wherein the beam recovery request information includes: the event that the performance of the beams in the reference signal set 1 is lower than the fourth predetermined value occurs at least a predetermined number of times, and / or the performance of at least Q reference signals in the reference signal set 2 is higher than the fifth predetermined value, and / or the index information of the reference signal with the best performance in the reference signal set 2 whose performance is higher than the fifth predetermined value. Q is a positive integer, such as Q = 1. In this embodiment, when a predetermined event occurs, a predetermined operation needs to be performed on the beam failure counter. The predetermined operation includes: clearing the beam failure counter, subtracting a predetermined number from the beam failure counter; and the beam failure counter cannot be continuously counted after the predetermined event occurs.

[0212] The predetermined event includes at least one of the following events:

[0213] Event one: the parameters of the control channel resource are reconfigured, the terminal needs to detect that the parameters of the control channel resource are reconfigured, then the beam failure counter performs the above predetermined operation, and further, when the terminal needs to detect that the parameters of the dedicated control channel resource are reconfigured, the beam failure counter performs the above predetermined operation. For example, previously the terminal detects the control channel on the CORESET1 resource, now the base station configures the terminal to not need to detect the control channel on the CORESET1, but to detect the control channel on the CORESET2, then the beam failure counter performs the above predetermined operation. Or previously the terminal detects the control channel on the CORESET1, now some parameters of the control channel are reconfigured (such as reconfiguring the QCL information corresponding to the CORESET1, and / or reconfiguring the aggregation degree information corresponding to the CORESET1, and / or reconfiguring the frequency domain resource information corresponding to the CORESET1, and / or reconfiguring the time domain resource information corresponding to the CORESET1, of course, other parameter information of the CORESET1 can also be reconfigured), then the beam failure counter performs the above predetermined operation. Or only the channel quality detection counter corresponding to this control channel resource performs the above predetermined operation. Or only the channel quality detection counter corresponding to the reference signal associated with this control channel resource performs the above predetermined operation.

[0214] Further, if the terminal detects CORESET1 and CORESET2 before the configuration, the QCL configuration field of CORESET1 configures the QCL reference signal of CORESET as CSI-RS1, that is, there is a QCL relationship between the DMRS of CORESET1 and CSI-RS1, the QCL configuration field of CORESET2 configures the QCL reference signal of CORESET as CSI-RS2, the terminal detects the performance of CSI-RS1 and CSI-RS2, and CSI-RS1 and CSI-RS2 correspond to a counter respectively, the performance of the evaluation result in a one-time evaluation window of the reference signal is lower than a predetermined threshold, the counter corresponding to the reference signal is incremented by 1, and at a time node, the beam failure counter is the minimum value of the multiple counters corresponding to the reference signals in the reference signal set detected by the terminal. For example, at time t0, the counter value of CSI-RS1 is 1, the counter value of CSI-RS2 is 3, and at t0, the base station configures the QCL reference signal corresponding to the QCL field of CORESET1 as CSI-RS3, then the terminal clears the counter corresponding to CSI-RS1 to 0, the counter 1 now corresponds to CSI-RS3, and starts to count again. Or after t0, both the counter 1 corresponding to CSI-RS1 and the counter 2 of CSI-RS2 are cleared to 0, and the counter 1 corresponds to CSI-RS3, and now the channel performance of {CSI-RS2, CSI-RS3} is detected again.

[0215] Event two: successfully detecting control information on a physical control channel, further, there is a QCL relationship between the demodulation reference signal of the physical control channel and at least one reference signal in the reference signal set 1. Further, the physical control channel is a dedicated physical control channel. Wherein the physical control channel is PDCCH, and the physical control information is DCI. It can also be that control information is successfully detected on at least N time units, or control information is successfully detected on at least M consecutive time units. Or successfully detecting control information on at least N time units in a predetermined window, such as Figure 2 Or Figure 3 as shown, Figure 2 is a schematic diagram of detecting dedicated control information in 3 time units in a predetermined time window according to embodiment 4 of the present application Figure 1 , Figure 3 is a schematic diagram of detecting dedicated control information in 3 time units in a predetermined time window according to embodiment 4 of the present application Figure 2 ; or successfully detecting control information on at least M consecutive time units in a predetermined window, such as Figure 4 as shown, Figure 4is a schematic diagram of detecting the dedicated control information in the predetermined window in the consecutive 3 time units according to embodiment 4 of the present application. Wherein N, M are positive integers, which can be the fixed value agreed by the base station and the terminal, or the value notified by the base station to the terminal. Wherein the predetermined window can be the agreed number of time units, or the time window with the agreed event as the boundary.

[0216] Event three: the channel performance of the reference signal in the consecutive at least L evaluation windows is higher than the predetermined threshold, such as for each reference signal in the reference signal set 1, the performance in one evaluation window of the reference signal is lower than the predetermined value, the corresponding counter of the reference signal is added by 1, at the predetermined time node, if all the counters corresponding to all the reference signals in the reference signal set 1 are greater than the predetermined value, the beam failure counter is added by 1, or at a predetermined time node, the beam failure counter is the minimum value of the plurality of reference signal counters. For the counter corresponding to a reference signal, when a predetermined event occurs, the predetermined operation is performed as above, specifically, when the channel performance of a reference signal in the consecutive at least L evaluation windows is higher than the predetermined threshold, the counter corresponding to the reference signal is operated as above. Or in the predetermined time window, the channel performance corresponding to at least P evaluation windows of the reference signal is higher than the predetermined threshold, the counter corresponding to the reference signal is operated as above. Wherein P, L are positive integers, which can be the fixed value agreed by the base station and the terminal, or the value notified by the base station to the terminal. Wherein the predetermined window can be the agreed number of time units, or the time window with the agreed event as the boundary.

[0217] Event four: the configuration information of the reference signal is reconfigured, such as the previous reference signal set 1 includes {CSI-RS1, CSI-RS2}, CSI-RS1 corresponds to counter 1, and CSI-RS2 corresponds to counter 2, now the configuration reference signal set includes {CSI-RS1, CSI-RS3}, at this time, one way is to clear counter 2, and make counter 2 correspond to CSI-RS3, or clear both counter 1 and counter 2, and start detecting {CSI-RS1, CSI-RS3} again. The beam failure counter is the minimum value of the counter 1 and the counter 2. Or the reference signal set 1 corresponds to a beam failure counter, when the reference signal set 1 is reconfigured, the beam failure counter performs the predetermined operation as above.

[0218] Event five: the channel performance of at least Q reference signals in the predetermined reference signal set is higher than a predetermined threshold, such as the reference signal set 1 corresponds to a beam failure counter, when the channel performance of at least Q reference signals in the reference signal set 1 is higher than a predetermined threshold, the predetermined operation is performed on the beam failure counter as described above. Or in a predetermined time window, the channel performance of at least Q reference signals in the predetermined reference signal set is higher than a predetermined threshold, then the predetermined operation is performed on the beam failure counter as described above. Or at least Q reference signals in the predetermined reference signal set continuously appear, the channel performance of at least Q reference signals is higher than a predetermined threshold, then the predetermined operation is performed on the beam failure counter as described above. Wherein Q is a positive integer, which can be a fixed value agreed by the base station and the terminal, or a value notified by the base station to the terminal. Wherein the predetermined window can be a number of time units agreed, or a time window with a predetermined event as a boundary.

[0219] When the beam failure counter exceeds a predetermined number, the terminal sends predetermined indication information to the base station or the high layer of the terminal. The predetermined indication information includes at least one of the following information: the beam performance in the reference signal set 1 is lower than the fourth predetermined value, and / or the performance of at least Q reference signals in the reference signal set 2 is higher than the fifth predetermined value, and / or the index information of the X reference signals with the best performance higher than the fifth predetermined value in the reference signal set 2. Specific embodiment 5

[0221] In this embodiment, the terminal determines the transmission parameter assumption of the control channel, and obtains the Hypothetical PDCCH BLER according to the transmission parameter assumption and the SINR obtained according to the CSI-RS / DMRS / SSB, wherein the transmission parameter assumption of the control channel includes at least one of the following assumptions:

[0222] The power difference between the reference signal and the control information in the control channel resource, such as the power difference between the resource transmitting the reference signal and the resource transmitting the DCI (the power of the control channel resource is the power on the resource transmitting the control information in the control channel resource); The power difference between the reference signal and the demodulation reference signal of the control channel resource, the power difference between the control information in the control channel resource and the demodulation reference signal of the control channel resource, the transmission mode of the control channel information (the transmission mode includes at least one of the following modes: transmission diversity, CDD, precoder cyclic, beam forming).

[0223] The reference signal is a reference signal detected by the terminal, including a channel state information reference signal (CSI-RS) and / or a demodulation reference signal (DMRS) and / or a single side band (SSB), and a transmission mode of control channel information includes at least one of the following transmission modes: SCDD (Small Cyclic Delay Diversity), Precoder cyclic, beamforming, and space frequency block coding (SFBC).

[0224] The method for obtaining the transmission parameter assumption can include one of the following methods:

[0225] Method one: the transmission parameter assumption is a fixed value agreed by the base station and the terminal.

[0226] Method two: according to the first parameter of the control channel resource corresponding to the reference signal, one or more transmission parameter assumption values in the above transmission parameter assumption are obtained according to the agreed rule. For example, according to the precoding granularity configuration information CORESET-precoder-granularity of the CORESET corresponding to the reference signal, the transmission mode assumption of the control channel is determined, such as when CORESET-precoder-granularity is CORESET, the transmission mode of the control channel belongs to {SCDD, beam-based transmission, SFBC}, at this time the transmission mode cannot be Precoder cyclic. When CORESET-precoder-granularity is less than CORESET size, the transmission mode of the control channel belongs to {SCDD, beam-based transmission, Precoder cyclic, SFBC}.

[0227] Method three: the base station informs the terminal of the assumption value of the above transmission parameter through explicit signaling. Specific embodiment 6

[0229] In this embodiment, beam recovery request information is transmitted on a dynamically scheduled channel or signal, wherein the beam recovery request information includes at least one of the following information: the signal quality of all reference signals in reference signal set 1 is lower than a first predetermined threshold, there are at least Q reference signals in reference signal set 2 whose signal quality is higher than a second threshold, and the indication information of the X reference signals with the highest signal quality performance in reference signal set 2.

[0230] Wherein Q and X are positive integers, which can be agreed values of the base station and the terminal.

[0231] For the beam recovery request signal, the base station allocates feedback resources to the terminal, such as periodic PUCCH resources, and when the beam request information needs to be sent, the information is sent on the allocated PUCCH resources. In order to quickly recover the link, the period of the PUCCH resources cannot be too long, but since the transmission of the beam recovery request information is random, the beam recovery request information may not be sent on the allocated PUCCH resources, and considering the cell load, the period of the PUCCH resources for sending the beam recovery request information also cannot be too small. Therefore, between two PUCCH periods, if the beam recovery request information needs to be sent, and between the two periods, the terminal receives PDCCH, such as PDCCH allocating PUSCH / PUCCH / SRS, the terminal can feed back the beam recovery request information on the dynamically scheduled channel or signal. Or the PDCCH allocates the PDSCH, and the beam recovery request information is fed back on the channel or signal where the ACK / NACK of the PDSCH is located.

[0232] Further, in order to reduce the blind detection complexity of the base station, it can be further agreed that only when the dynamically scheduled PUSCH / PUCCH / SRS / PDSCH / feedback PDSCH ACK / NACK channel or signal falls within the predetermined time domain resource and / or falls within the agreed frequency domain resource, the beam recovery request information is fed back on the dynamically scheduled PUSCH / PUCCH / SRS / feedback PDSCH ACK / NACK channel or signal, otherwise even if the terminal receives dynamic scheduling information between the PUCCH corresponding to the two beam recovery request information, the beam recovery request information is not sent on the dynamically scheduled channel or signal.

[0233] Or similarly, only when the physical dynamic scheduling downlink control information DCI falls within the predetermined time domain resource and / or falls within the agreed frequency domain resource, the beam recovery request information is transmitted on the channel or signal obtained according to the DCI. Otherwise, even if the terminal receives dynamic scheduling information between the PUCCH corresponding to the two beam recovery request information, the beam recovery request information is not transmitted on the channel or signal obtained according to the DCI.

[0234] Wherein the channel or signal falls within the predetermined time-frequency resource, one is that the starting position of the channel or signal falls within the predetermined time-frequency resource, one is that the whole of the channel or signal falls within the predetermined time-frequency resource, and one is that the ending position of the channel or signal falls within the predetermined time-frequency resource. The specific one can be agreed by the base station and the terminal.

[0235] The beam recovery request information can be sent on a demodulation reference signal corresponding to the channel. Of course, it can also be transmitted in a certain puncturing manner in the resources where the data or control data of the channel is located. Embodiment 7

[0237] In this embodiment, the terminal detects multiple reference signals, the multiple reference signals correspond to one control channel resource, the multiple reference signals correspond to one Hypothetical PDCCH BLER, or the multiple reference signals correspond to one channel quality, or the multiple reference signals correspond to one control channel resource.

[0238] At this time, it is necessary to determine the mapping manner between the multiple reference signals and the demodulation reference signal of the control channel, or the mapping manner between the multiple reference signals and the layer, and this mapping relationship can also be called a transmission mode, and it is determined according to the mapping relationship how to obtain a Hypothetical PDCCH BLER from the multiple reference signals.

[0239] Or determine the mapping manner between the demodulation reference signal of the control channel and the multiple reference signals, or the mapping manner between the layer and the multiple reference signals, and this mapping relationship can also be called a transmission mode, and it is determined according to the mapping relationship how to obtain a Hypothetical PDCCH BLER from the multiple reference signals. The reference signal can be a CSI-RS / SSB (synchronization signal) / DMRS (demodulation reference signal).

[0240] For example, the terminal needs to detect 4 CSI-RS ports, and the number of demodulation reference signal ports of the control channel is determined to be 1, and the terminal has Rx receiving antennas, so that the terminal can obtain an Rx*4 channel matrix H by detecting 4 CSI-RS ports. In order to obtain the BLER of the control channel based on the 4 reference signals, it is necessary to determine the mapping relationship between the demodulation reference signal of the control channel and the 4 reference signals, for example, the terminal and the base station agree that the number of demodulation signal ports of the control channel is 1, and the mapping relationship between the demodulation reference signal of the control channel and the 4 CSI-RS ports is represented by W, wherein W is a matrix of CSI-RS port number*Lay, wherein Lay is the assumed value of the number of demodulation reference signal ports of the control channel, so that the terminal obtains a BLER of the control channel based on the equivalent channel H eff =HW. Similarly, the W can also be called a mapping relationship between Lay layers and 4 CSI-RS ports.

[0241] The acquisition manner of W can include at least one of the following manners:

[0242] Acquisition manner one: W is decided by the terminal itself, for example, the terminal obtains the preferred W by SVD and demodulation reference signal decomposition based on the above H.

[0243] The second way of obtaining W is that the terminal randomly selects W from a predetermined W set, which can be agreed by the base station and the terminal, or can be informed to the terminal by the base station through signaling information. Or W is selected by polling in the W set.

[0244] The third way of obtaining W is that W is a predetermined matrix, such as an identity matrix, such as the number of layers or the number of demodulation reference signal ports is the same as the number of CSI-RS ports.

[0245] The fourth way of obtaining W is that the terminal obtains W according to a predetermined rule, such as the base station and the terminal agreeing to assume a transmission mode of the control channel, so as to obtain the W based on the transmission mode assumption, the transmission mode including SFBC, Precoder cyclic, SCDD, Beamforming, etc.

[0246] Of course, the application also does not exclude that the terminal obtains the W by other ways. Or the terminal also feeds back the W to the base station. Specific embodiment 8

[0248] In this embodiment, the terminal (or other communication node) performs the following operations:

[0249] Determine a reference signal set;

[0250] Each reference signal in the reference signal set corresponds to a counter;

[0251] Obtain channel quality detection information corresponding to the reference signal set according to a plurality of counters corresponding to a plurality of reference signals in the reference signal set in a predetermined time window.

[0252] Further, each reference signal in the reference signal set corresponds to a counter, which satisfies at least one of the following characteristics:

[0253] When a one-time channel quality evaluation corresponding to the reference signal satisfies a predetermined condition, the counter corresponding to the reference signal is incremented by 1;

[0254] When the one-time channel quality evaluation corresponding to the reference signal is better than a first predetermined threshold, the counter corresponding to the reference signal is incremented by 1;

[0255] When the one-time channel quality evaluation corresponding to the reference signal is worse than a second predetermined threshold, the counter corresponding to the reference signal is incremented by 1.

[0256] Further, the channel quality detection information corresponding to the reference signal set is obtained according to whether the plurality of counters satisfy a predetermined condition in the predetermined time window, characterized in that:

[0257] According to the reference signal set corresponding to the count value of all counters in the plurality of counters corresponding to the plurality of reference signals in the predetermined time window exceeding the first predetermined number, the reference signal set corresponding counter is added by 1;

[0258] According to the reference signal set corresponding to the count value of at least a predetermined number of counters in the plurality of counters corresponding to the plurality of reference signals in the predetermined time window exceeding the second predetermined number, the reference signal set corresponding counter is added by 1;

[0259] Further, when the reference signal set corresponding counter is greater than or equal to a third predetermined number, a predetermined indication information is fed back. Specific embodiment 9

[0261] In this specific embodiment, the base station configures a CSI-RS resource for the terminal, and each layer corresponds to a port subset of the CSI-RS resource. The port subset corresponding to each layer can be obtained through a convention rule, or the base station notifies the terminal of the port subset corresponding to each layer, and then the precoding matrix (PMI) corresponding to this layer, or the precoding vector is obtained according to the port subset corresponding to the layer.

[0262] For example, a CSI-RS resource 1 includes {1~8~}8 ports, the base station indicates that the number of layers supported based on the CSI-RS resource 1 is {1, 2, 3}, and indicates that the port subset corresponding to the layer 1 is {1, 2}, the port subset corresponding to the layer 2 is {1, 3, 4, 5}, and the port subset corresponding to the layer 3 is {1, 2, 3, 4, 5, 6, 7, 8}. The terminal obtains the corresponding PMI based on the port subset corresponding to each layer. Specifically, the terminal finds the optimal PMI in the 2-port 1-layer PMI matrix based on the port {1, 2}, the terminal finds the optimal PMI in the 4-port 2-layer PMI matrix based on the port {1, 3, 4, 5}, and the terminal finds the optimal PMI in the 8-port 3-layer PMI matrix based on the port {1, 2, 3, 4, 5, 6, 7, 8}. The feedback of the terminal to the PMI includes the following modes:

[0263] Mode one: the terminal finds the optimal layer in the layer set supported by the CSI-RS1, such as the layer with the maximum channel capacity, and feeds back the layer with the maximum channel capacity and the PMI corresponding to the layer. For example, the terminal obtains the channel capacity corresponding to the layer {1, 2, 3} through the above steps, and obtains the maximum channel capacity corresponding to the layer 2, so that the terminal feeds back RI=2 and the PMI of the 4-port 2-layer.

[0264] The second mode: the terminal reports the preferred PMI for each number of layers supported by the CSI-RS, that is, the terminal reports the corresponding PMI for each number of layers supported by the CSI-RS1, the number of layers supported by the CSI-RS1 is {1, 2, 3}. Specifically, one PMI of 2-port 1-layer is reported for the number of layers 1, one PMI of 4-port 2-layer is reported for the number of layers 2, and one PMI of 8-port 3-layer is reported for the number of layers 3.

[0265] When the PMI is obtained based on the number of layers 3 and the subset of ports, the preferred precoding matrix is searched in the precoding matrix of the number of ports * 3 layers included in the subset of ports. In this embodiment, the number of ports included in the subset of ports can also be Lay, where Lay is a positive integer less than or equal to the number of layers. For example, as described above, the Lay of the PMI of the number of layers 1 belongs to {1}, the Lay of the PMI of the number of layers 2 belongs to {1, 2}, and the Lay of the PMI of the number of layers 3 belongs to {1, 2, 3}.

[0266] From the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software and the necessary general hardware platform, and of course, it can also be implemented by hardware, but in many cases, the former is a better implementation. Based on this understanding, the technical solutions of the present application or the parts that contribute 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, magnetic disk, optical disk) and includes a plurality of instructions for making a terminal device (which can be a mobile phone, computer, server, or network device) execute the method described in each embodiment of the present application.

[0267] Embodiment two

[0268] In this embodiment, a channel state information acquisition device is also provided, which is used to implement the above embodiments and preferred embodiments, which have been described above. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware or a combination of software and hardware is also possible and is contemplated.

[0269] According to one embodiment of the present application, a channel quality information acquisition device is provided, the device comprising:

[0270] A first determination module is configured to determine a control channel resource corresponding to a reference signal;

[0271] A first acquisition module is configured to acquire channel state information corresponding to the reference signal according to parameters of the control channel resource.

[0272] Optionally, the acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource comprises: in a case that one reference signal corresponds to different control channel resources at different time instants, acquiring the channel state information corresponding to the reference signal at different time instants according to the parameters of the different control channel resources.

[0273] Optionally, the acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource comprises: obtaining a transmission parameter hypothesis of the physical downlink control channel according to the parameter of the control channel resource; obtaining a hypothetical physical downlink control channel block error rate (Hypothetical PDCCH BLER) according to the transmission parameter hypothesis; and obtaining the channel state information according to the hypothetical physical downlink control channel block error rate.

[0274] It should be noted that the hypothetical physical downlink control channel block error rate is determined according to the transmission parameter hypothesis and the channel quality measured according to the reference signal, and the channel state information is determined according to the hypothetical physical downlink control channel block error rate and a preset rule or formula, such as a relationship between the downlink control channel block error rate BLER and a predetermined threshold, which indicates whether the channel state is good or bad, i.e., the channel state information is used to indicate whether the reliability of the transmission of the physical downlink control channel using the reference signal and the parameter of the control channel resource is in a good state or in a bad state.

[0275] Optionally, the acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource comprises one of the following: in a case that the reference signal corresponds to a control channel resource set, acquiring the channel state information corresponding to the reference signal according to the parameter corresponding to the control channel resource set; in a case that the reference signal corresponds to a control channel resource set, each control channel resource in the control channel resource set corresponds to a channel quality, and the channel state information corresponding to the reference signal is acquired according to a plurality of channel qualities corresponding to a plurality of control channel resources in the control channel resource set; in a case that the reference signal corresponds to a control channel resource set, each control channel resource in the control channel resource set corresponds to a channel state detection counter, and the channel state information corresponding to the reference signal is acquired according to a plurality of channel state detection counters corresponding to a plurality of control channel resources in the control channel resource set; wherein the control channel resource set includes one or more control channel resources.

[0276] Optionally, the apparatus further comprises one of the following:

[0277] When the reference signal corresponds to a control channel resource set, the channel state information corresponding to the reference signal is obtained according to parameters corresponding to the control channel resource set, including: determining that the parameters corresponding to the control channel resource set are parameters corresponding to predetermined control channel resources in the control channel resource set, and obtaining the channel state information corresponding to the reference signal according to the parameters corresponding to the predetermined control channel resources.

[0278] When the reference signal corresponds to a control channel resource set, the channel state information corresponding to the reference signal is obtained according to parameters corresponding to the control channel resource set, including: determining that the parameters corresponding to the control channel resource set are parameters that meet a first predetermined condition in a set composed of parameters of each control channel resource in the control channel resource set, and obtaining the channel state information corresponding to the reference signal according to the parameters that meet the first predetermined condition.

[0279] The channel state information corresponding to the reference signal is obtained according to a plurality of channel qualities corresponding to a plurality of control channel resources in the control channel resource set, including: obtaining the channel state information of the reference signal according to a judgment result of whether the plurality of channel qualities corresponding to the plurality of control channel resources in the control channel resource set meet a second predetermined condition.

[0280] The channel state information corresponding to the reference signal is obtained according to a plurality of channel state detection counters corresponding to a plurality of control channel resources in the control channel resource set, including: obtaining the channel state information of the reference signal according to a judgment result of whether the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set meet a third predetermined condition.

[0281] The channel state information corresponding to the reference signal is obtained according to a plurality of channel state detection counters corresponding to a plurality of control channel resources in the control channel resource set, including: obtaining the channel state information of the reference signal according to a minimum value in the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set.

[0282] The channel state information corresponding to the reference signal is obtained according to a plurality of channel state detection counters corresponding to a plurality of control channel resources in the control channel resource set, including: obtaining the channel state information of the reference signal according to a maximum value in the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set.

[0283] Optionally, the apparatus further includes at least one of the following: detecting a control channel on the control channel resource; and obtaining the parameters of the control channel resource through signaling information received before obtaining the channel state information corresponding to the reference signal according to the parameters of the control channel resource.

[0284] Optionally, the acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource comprises: setting a channel state detection counter corresponding to the reference signal according to a channel quality corresponding to the reference signal, and determining the channel state information corresponding to the reference signal according to the channel state detection counter; wherein the channel state detection counter comprises at least one of the following: the channel state detection counter is cleared once when the quasi co-location (QCL) parameter information of the control channel resource is reconfigured once; the channel state detection counter is cleared once when a quasi co-location reference signal in the QCL parameter of the control channel resource is changed.

[0285] The control channel resource set comprises one or more control channel resources. When the reference signal corresponds to one control channel resource set, each control channel resource in the control channel resource set corresponds to a channel state detection counter, and the channel state information corresponding to the reference signal is acquired according to a plurality of channel state detection counters corresponding to a plurality of control channels in the control channel resource set.

[0286] The acquiring the channel state information corresponding to the reference signal according to the plurality of channel state detection counters corresponding to the plurality of control channel resources in the control channel resource set comprises one of the following:

[0287] The channel state information of the reference signal is obtained according to a result of judging whether the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set satisfy a third predetermined condition;

[0288] The channel state information of the reference signal is obtained according to a minimum value of the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set;

[0289] The channel state information of the reference signal is obtained according to a maximum value of the plurality of counters corresponding to the plurality of control channel resources in the control channel resource set.

[0290] Optionally, the acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource comprises: setting a channel state detection counter corresponding to the reference signal according to a channel quality corresponding to the reference signal, and determining the channel state information corresponding to the reference signal according to the channel state detection counter; wherein the channel state detection counter comprises at least one of the following: the channel state detection counter is cleared once when the configuration information of the control channel resource is reconfigured once; the channel state detection counter is cleared once when the configuration information of the reference signal is reconfigured once.

[0291] The control channel resource set includes one or more control channel resources. When the reference signal corresponds to one control channel resource set, each control channel resource in the control channel resource set corresponds to a channel state detection counter. The channel state information corresponding to the reference signal is obtained according to the channel state detection counters corresponding to the control channel resources in the control channel resource set.

[0292] The channel state information corresponding to the reference signal is obtained according to one of the following:

[0293] The channel state information corresponding to the reference signal is obtained according to whether the plurality of counters corresponding to the control channel resources in the control channel resource set satisfy a third predetermined condition;

[0294] The channel state information corresponding to the reference signal is obtained according to the minimum value of the plurality of counters corresponding to the control channel resources in the control channel resource set;

[0295] The channel state information corresponding to the reference signal is obtained according to the maximum value of the plurality of counters corresponding to the control channel resources in the control channel resource set.

[0296] Optionally, after obtaining the channel state information corresponding to the reference signal, the apparatus further comprises: feeding back the channel state information when it is determined that the channel state information satisfies a fourth predetermined condition.

[0297] Optionally, when the channel state information of a plurality of reference signals needs to be detected, the apparatus further comprises at least one of the following:

[0298] In the case where each reference signal corresponds to one control channel resource or one control channel resource set, the channel state information of each reference signal is obtained according to the control channel resource or the control channel resource set corresponding to each reference signal, respectively;

[0299] When one control channel resource corresponds to a plurality of reference signals, the mapping mode between the demodulation reference signal of the control channel and the plurality of reference signals is determined according to at least one of a predetermined rule and signaling information, and the channel state information corresponding to the plurality of reference signals is obtained according to the mapping mode.

[0300] The mapping relationship between the plurality of reference signals and layers is determined by a predetermined rule and / or signaling information, and the channel state information corresponding to the plurality of reference signals is obtained according to the mapping relationship.

[0301] The mapping relationship between the layers and the plurality of reference signals is determined by a predetermined rule and / or signaling information, and the channel state information corresponding to the plurality of reference signals is obtained according to the mapping relationship.

[0302] The mapping relationship between the control channel demodulation reference signal and the plurality of reference signals is determined by a predetermined rule and / or signaling information, and the channel state information corresponding to the plurality of reference signals is obtained according to the mapping relationship.

[0303] Optionally, the parameters of the control channel resource include at least one of the following:

[0304] Aggregation degree;

[0305] Downlink control information format indication information, such as the type of DCI format that needs to be detected on the control channel resource;

[0306] The number of candidate control channels, such as the number of candidate control channels that need to be detected on an aggregation degree of the control channel resource;

[0307] The mapping mode of the control channel element (CCE) to the resource group (REG);

[0308] Precoding block granularity;

[0309] Frequency domain information, such as frequency domain bandwidth information corresponding to the control channel resource;

[0310] Time domain information, such as at least one of the following information corresponding to the control channel resource: time domain symbol number information, slot information;

[0311] Resource unit bundle size;

[0312] Offset when interleaving in the resource unit bundle size;

[0313] Transmission control indicator (TCI);

[0314] The reference signal satisfying the quasi-co-location (QCL) relationship with the demodulation reference signal of the control channel resource

[0315] Whether the predetermined field is included in the control information included in the control channel resource;

[0316] The power difference between the reference signal and the control information in the control channel resource;

[0317] a power difference between the reference signal and a demodulation reference signal of the control channel resource;

[0318] a power difference between control information in the control channel resource and a demodulation reference signal of the control channel resource;

[0319] a cyclic prefix (CP) length;

[0320] a subcarrier spacing;

[0321] related information of a demodulation reference signal (the related information can include transmission mode information of the demodulation reference signal, and port number information of the demodulation reference signal);

[0322] a transmission mode of control channel information.

[0323] According to another embodiment of the present application, a channel state information acquisition device is also provided, and the device comprises:

[0324] a second determination module configured to determine a control channel transmission parameter assumption according to at least one of the following: an agreed parameter, and a parameter of a control channel resource corresponding to the reference signal;

[0325] a second acquisition module configured to acquire channel state information of the reference signal according to the control channel transmission parameter assumption.

[0326] Optionally, the parameter includes at least one of the following:

[0327] an aggregation degree; downlink control information format indication information; a number of candidate control channels; a mapping mode of a control channel element (CCE) to a resource group (REG); a precoding block granularity; frequency domain information; time domain information; a bundle size; an offset when performing bundle size interleaving; TCI; a reference signal satisfying a QCL relationship with a demodulation reference signal in the control channel resource; whether a predetermined field is included in control information included in the control channel resource; a power difference between the reference signal and control information in the control channel resource; a power difference between the reference signal and a demodulation reference signal of the control channel resource; a power difference between control information in the control channel resource and a demodulation reference signal of the control channel resource; a CP length; a subcarrier spacing; a transmission mode of a demodulation reference signal; a mapping relationship between a demodulation reference signal of a control channel and Y reference signals; and a mapping relationship between a layer and Y reference signals, wherein Y is a positive integer.

[0328] Optionally, the control channel resource includes at least one of the following:

[0329] detecting a control channel on the control channel resource;

[0330] According to the parameter of the control channel resource, the parameter of the control channel resource is acquired through the received signaling information before the channel state information corresponding to the reference signal is acquired.

[0331] Optionally, the determination of the control channel transmission parameter hypothesis according to the agreed parameter and / or the parameter of the control channel resource corresponding to the reference signal comprises at least one of the following:

[0332] When the reference signal has no corresponding control channel resource, the transmission parameter hypothesis of the control channel is determined by using the agreed parameter, wherein the agreed parameter comprises at least one of the following parameters: the power difference between the reference signal and the control information in the control channel resource; the power difference between the reference signal and the demodulation reference signal of the control channel resource; the power difference between the control information in the control channel resource and the demodulation reference signal of the control channel resource; the transmission mode of the control channel information; the mapping relationship between the demodulation reference signal of the control channel and Y reference signals; the mapping relationship between the layer and Y reference signals, wherein Y is a positive integer.

[0333] According to the first parameter of the control channel resource corresponding to the reference signal, the second transmission parameter hypothesis of the control channel is obtained according to the agreed rule.

[0334] According to the second parameter of the control channel resource corresponding to the reference signal, the range of the second transmission parameter hypothesis of the control channel is obtained according to the agreed rule.

[0335] According to another embodiment of the present application, a channel state detection counter management device is also provided, and the device comprises:

[0336] The execution module is configured to perform a predetermined operation on the channel state detection counter when a predetermined event occurs.

[0337] Optionally, the predetermined operation comprises one of the following operations: the channel state detection counter is cleared; the channel state detection counter is subtracted by a predetermined number; the channel state detection counter is prohibited from continuous counting after the predetermined event occurs.

[0338] Optionally, the predetermined event comprises at least one of the following events:

[0339] The parameter of the control channel resource is reconfigured;

[0340] The control information is successfully detected on the physical control channel;

[0341] The control information is successfully detected on the physical control channel in at least N time units.

[0342] successfully detecting control information on a physical control channel in consecutive at least M time units;

[0343] successfully detecting dedicated control information on a physical control channel;

[0344] a channel quality of the reference signal is higher than a first predetermined threshold in consecutive at least L evaluation windows;

[0345] a channel quality corresponding to at least P evaluation windows of the reference signal in a predetermined time window is higher than a second predetermined threshold;

[0346] configuration information of the reference signal is reconfigured;

[0347] a channel quality of at least Q reference signals in a predetermined reference signal set is higher than a third predetermined threshold;

[0348] wherein the channel quality is obtained according to the reference signal, one evaluation window corresponds to one channel evaluation of the reference signal; and N, M, L, P and Q are positive integers.

[0349] Optionally, the reconfiguration of the parameter of the control channel resource includes at least one of the following: reconfiguration of a QCL parameter of the control channel resource; and reconfiguration of a parameter of a control channel resource corresponding to the channel state detection counter.

[0350] Optionally, the channel state detection counter includes at least one of the following:

[0351] the channel state detection counter corresponds to one reference signal;

[0352] the channel state detection counter corresponds to one reference signal set;

[0353] the channel state detection counter is a counter of a channel quality lower than a predetermined threshold.

[0354] the channel state detection counter is a counter of a channel quality lower than a predetermined threshold, which can also be referred to as a beam failure counter, or other equivalent names.

[0355] According to another embodiment of the present application, a channel state information feedback device is also provided, and the device includes:

[0356] a sending module configured to send signaling information on a dynamically scheduled channel or signal, wherein the signaling information includes channel state information;

[0357] wherein the dynamically scheduled channel or signal is scheduled by physical downlink control information.

[0358] Optionally, the signaling information is used to indicate at least one of the following information:

[0359] first information, used to indicate that the performance of the reference signals in the reference signal set 1 are all lower than a predetermined threshold;

[0360] second information, used to indicate that at least X reference signals in the reference signal set 2 have a quality higher than a predetermined threshold;

[0361] third information, used to indicate the indication information of the reference signals in the reference signal set 2 having a quality higher than a predetermined threshold;

[0362] fourth information, including beam recovery request information;

[0363] fifth information, used to indicate that the beam recovery request information has been sent at least once before;

[0364] sixth information, measurement reference signal resource request information, including measurement reference signal resource number information;

[0365] seventh information, measurement reference signal resource type request information, such as the measurement reference signal is used for sending beam training and / or receiving beam training, such as when requesting for sending beam training, there is no QCL relationship between the requested multiple measurement reference signal resources, or the requested multiple measurement reference signal resources correspond to the same transmission beam of the base station, when the requested multiple measurement reference signal resources are used for receiving beam training, there is a QCL relationship between the requested multiple measurement reference signal resources, or the requested multiple measurement reference signal resources correspond to different transmission beams of the base station. The type information can also be uplink measurement reference signal and downlink measurement reference signal.

[0366] wherein the X is a positive integer.

[0367] Optionally, the signaling information is sent on a dynamically scheduled channel or signal, including at least one of the following:

[0368] when the dynamically scheduled channel or signal is located in a first predetermined time unit, the signaling information is sent on the dynamically scheduled channel or signal;

[0369] when the dynamically scheduled channel or signal is located in a first predetermined frequency domain resource, the signaling information is sent on the dynamically scheduled channel or signal;

[0370] when the physical downlink control information is located in a second predetermined time unit, the signaling information is sent on the dynamically scheduled channel or signal;

[0371] The signaling information is sent on the dynamically scheduled channel or signal when the physical downlink control information is located in the second predetermined frequency domain resource.

[0372] Optionally, the apparatus comprises at least one of the following features: the information of the first or second predetermined time unit is comprised in the received first signaling information; the information of the first or second predetermined frequency domain resource is comprised in the received second signaling information.

[0373] Optionally, the channel comprises at least one of the following: an uplink physical data channel, an uplink aperiodic control channel, an uplink control channel for feeding back an acknowledgement ACK / negative acknowledgement NACK corresponding to a downlink data channel;

[0374] The signal comprises at least an aperiodic SRS.

[0375] According to another embodiment of the present application, there is also provided an information state information feedback apparatus, the apparatus comprising:

[0376] a third determining module configured to determine a port subset of a measurement reference signal resource corresponding to each layer number;

[0377] a feedback module configured to feed back precoding matrix indication information obtained based on the port subset.

[0378] Optionally, the determining of the port subset of the measurement reference signal resource corresponding to each layer number comprises at least one of the following:

[0379] The port subset corresponding to each layer number is comprised in received signaling information;

[0380] The port subset corresponding to each layer number is obtained through a convention rule;

[0381] The port subset corresponding to one layer number comprises a port number greater than or equal to the layer number (for example, the port subset corresponding to a layer number 3 comprises 8 ports).

[0382] Optionally, the feeding back of the precoding matrix indication information obtained based on the port subset comprises at least one of the following: feeding back a rank RI and precoding matrix indication information corresponding to the RI; for each layer number supported by the measurement reference signal resource, feeding back precoding matrix indication information obtained based on the port subset corresponding to the layer number.

[0383] It should be noted that the above-mentioned modules can be realized by software or hardware, and for the latter, the following implementation manners can be used, but are not limited thereto: all the modules are located in the same processor; or the modules are located in different processors in any combination.

[0384] Embodiment Three

[0385] According to an embodiment of the present application, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the method of any of the optional embodiments described above when executed.

[0386] Optionally, in the present embodiment, the storage medium can include, but is not limited to, a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various media capable of storing program codes.

[0387] Embodiment Four

[0388] The embodiments of the present application also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to execute the computer program to perform the steps of any of the method embodiments described above.

[0389] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be realized by universal computing devices, which can be concentrated on a single computing device or distributed on a network composed of multiple computing devices, and optionally, they can be realized by program codes executable by the computing devices, so that they can be stored in the storage devices and executed by the computing devices, and in some cases, the steps shown or described herein can be executed in different orders, or they can be manufactured into individual integrated circuit modules respectively, or multiple modules or steps among them can be manufactured into a single integrated circuit module to realize. Thus, the present application is not limited to any particular combination of hardware and software.

[0390] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A channel state information acquisition method characterized by comprising: The method comprises: determining a control channel resource corresponding to a reference signal; acquiring channel state information corresponding to the reference signal according to parameters of the control channel resource, the channel state information comprising a physical downlink control channel block error rate (PDCCH BLER), wherein the parameters of the control channel resource comprise an aggregation level, a power difference between the reference signal and control information in the control channel resource, a cyclic prefix (CP) length, a subcarrier spacing, and a mapping mode of a control channel element to a resource group; acquiring the channel state information corresponding to the reference signal according to the parameters of the control channel resource comprises: determining the PDCCH BLER corresponding to the reference signal according to a reception quality of the reference signal and the parameters of the control channel resource, setting a channel state detection counter corresponding to the reference signal, and determining the channel state information corresponding to the reference signal according to the channel state detection counter; the channel state detection counter comprises: the channel state detection counter being cleared once the configuration information of the reference signal is reconfigured once.

2. The method of claim 1, wherein, acquiring the channel state information corresponding to the reference signal according to the parameters of the control channel resource comprises: in a case where one reference signal is allowed to correspond to different control channel resources at different time instants, acquiring the channel state information corresponding to the reference signal at different time instants according to the parameters of the different control channel resources.

3. The method of claim 1, wherein, acquiring the channel state information corresponding to the reference signal according to the parameters of the control channel resource comprises: obtaining a transmission parameter hypothesis of a physical downlink control channel according to the parameters of the control channel resource; obtaining a hypothetical PDCCH BLER according to the transmission parameter hypothesis; obtaining the channel state information according to the hypothetical PDCCH BLER.

4. The method of claim 1, wherein, acquiring the channel state information corresponding to the reference signal according to the parameters of the control channel resource comprises one of: in a case where the reference signal corresponds to a control channel resource set, acquiring the channel state information corresponding to the reference signal according to parameters corresponding to the control channel resource set; in a case where the reference signal corresponds to a control channel resource set, each control channel resource in the control channel resource set corresponding to a channel quality, and acquiring the channel state information corresponding to the reference signal according to a plurality of channel qualities corresponding to a plurality of control channel resources in the control channel resource set; in a case where the reference signal corresponds to a control channel resource set, each control channel resource in the control channel resource set corresponding to a channel state detection counter, and acquiring the channel state information corresponding to the reference signal according to a plurality of channel state detection counters corresponding to a plurality of control channels in the control channel resource set; wherein the control channel resource set comprises one or more control channel resources.

5. The method of claim 4, wherein, the method further comprises one of: The method further comprises at least one of the following: detecting a control channel on the control channel resource; acquiring the parameter of the control channel resource through signaling information received before acquiring the channel state information corresponding to the reference signal according to the parameter of the control channel resource.

7. The method of claim 1, wherein the channel state detection counter further comprises: the quasi co-location (QCL) parameter information of the control channel resource is reconfigured once, and the channel state detection counter is cleared once; the QCL reference signal in the QCL parameter of the control channel resource is changed, and the channel state detection counter is cleared once.

6. The method of claim 1, wherein, 8. The method of claim 1, wherein ​ ​ ​ ​ ​ ​ wherein, The channel state detection counter further comprises: when the configuration information of the control channel resource is reconfigured once, the channel state detection counter is cleared once.

9. The method of claim 1, wherein, After the channel state information corresponding to the reference signal is acquired, the method further comprises: When it is determined that the channel state information satisfies a fourth predetermined condition, the channel state information is fed back.

10. The method of claim 1, wherein, When channel state information of multiple reference signals needs to be detected, the method further comprises at least one of the following: In the case that one control channel resource or one control channel resource set corresponds to each reference signal, the channel state information of each reference signal is acquired according to the control channel resource or the control channel resource set corresponding to each reference signal respectively; When one control channel resource corresponds to multiple reference signals, a mapping mode between the demodulation reference signal of the control channel and the multiple reference signals is determined according to at least one of the convention rule and the signaling information, and the channel state information corresponding to the multiple reference signals is acquired according to the mapping mode; A mapping relationship between layers and the multiple reference signals is determined according to at least one of the convention rule and the signaling information, and the channel state information corresponding to the multiple reference signals is obtained according to the mapping relationship.

11. The method according to any one of claims 1 to 10, characterized in that, The parameters of the control channel resource include at least one of the following: Aggregation degree; Downlink control information format information; Number of candidate control channels; Mapping mode of control channel element to resource group; Precoding block granularity; Frequency domain information; Time domain information; Resource unit bundle size; Offset when interleaving is performed in units of resource unit bundle size; Indication information of transmission control index TCI domain; Reference signal satisfying a quasi co-location QCL relationship with the demodulation reference signal of the control channel resource; Whether a predetermined field is included in the control information included in the control channel resource; Power difference between the reference signal and the control information in the control channel resource; Power difference between the reference signal and the demodulation reference signal of the control channel resource; Power difference between the control information in the control channel resource and the demodulation reference signal of the control channel resource; Cyclic prefix CP length; Subcarrier spacing; Related information of the demodulation reference signal; Transmission mode of the control channel information.

12. A channel state information acquisition method, characterized by: determining a control channel transmission parameter hypothesis according to a convention parameter; acquiring channel state information of a reference signal according to the control channel transmission parameter hypothesis, wherein the channel state information includes a physical downlink control channel block error rate PDCCH BLER, and the convention parameter includes at least one of the following: power difference between the reference signal and control information in a control channel resource; power difference between the reference signal and a demodulation reference signal of the control channel resource; power difference between the control information in the control channel resource and the demodulation reference signal of the control channel resource; transmission mode of the control channel information; mapping relationship between a demodulation reference signal of the control channel and Y reference signals; and mapping relationship between layers and Y reference signals, wherein Y is a positive integer.

13. The method of claim 12, wherein the control channel transmission parameter assumption is determined according to a parameter of a control channel resource corresponding to the reference signal. The control channel transmission parameter assumption is determined according to the parameter of the control channel resource corresponding to the reference signal and / or the agreed parameter.

14. The method of claim 12, wherein, The determination of the control channel transmission parameter assumption according to the parameter of the control channel resource corresponding to the reference signal and / or the agreed parameter comprises at least one of the following: When the reference signal has no corresponding control channel resource, the control channel transmission parameter assumption is determined according to the agreed parameter; According to a first parameter of the control channel resource corresponding to the reference signal, a second control channel transmission parameter assumption is obtained according to an agreed rule; According to a second parameter of the control channel resource corresponding to the reference signal, a range of the second control channel transmission parameter assumption is obtained according to an agreed rule.

15. A method for managing a channel state detection counter, comprising: performing a predetermined operation on the channel state detection counter when a predetermined event is detected; the predetermined operation comprises clearing the channel state detection counter; The predetermined event comprises at least one of the following: A parameter of a control channel resource is reconfigured; 16. The method of claim 15, wherein, Configuration information of a reference signal is reconfigured. The predetermined event further comprises at least one of the following: Control information is successfully detected on a physical control channel; Channel quality of the reference signal in L consecutive evaluation windows is higher than a first predetermined threshold; 17. The method of claim 16, wherein, The channel quality is obtained according to the reference signal; one evaluation window corresponds to one channel evaluation of the reference signal; L is a positive integer. The reconfiguration of the parameter of the control channel resource comprises at least one of the following: A QCL parameter of the control channel resource is reconfigured; 18. The method of claim 15, wherein, The parameter of the control channel resource corresponding to the channel state detection counter is reconfigured. The channel state detection counter corresponds to a reference signal set.

19. A method of channel state information feedback, the method comprising: The channel state detection counter is a counter for channel quality lower than a predetermined threshold. The method comprises: Sending signaling information on a dynamically scheduled channel or signal; the signaling information comprises channel state information; The dynamically scheduled channel or signal is scheduled by physical downlink control information; The channel comprises an uplink physical data channel; The signaling information is used to indicate at least one of the following: First information is used to indicate that the performance of all reference signals in a reference signal set 1 is lower than a predetermined threshold; Second information is used to indicate that at least X reference signals in a reference signal set 2 have quality higher than a predetermined threshold; X is a positive integer; Third information is used to indicate indication information of reference signals in the reference signal set 2 with quality higher than a predetermined threshold; 20. The method of claim 19, wherein, Fourth information comprises beam recovery request information. The sending of the signaling information on the dynamically scheduled channel or signal comprises at least one of the following: The signaling information is sent on the dynamically scheduled channel or signal when the dynamically scheduled channel or signal is located in a first predetermined time unit; The signaling information is sent on the dynamically scheduled channel or signal when the dynamically scheduled channel or signal is located in a first predetermined frequency domain resource. when the physical downlink control information is located in a second predetermined time unit, sending the signaling information on the dynamically scheduled channel or signal; when the physical downlink control information is located in a second predetermined frequency domain resource, sending the signaling information on the dynamically scheduled channel or signal.

21. The method of claim 20, wherein, The method comprises at least one of the following: Information of the first or second predetermined time unit is comprised in the received first signaling information; Information of the first or second predetermined frequency domain resource is comprised in the received second signaling information.

22. An apparatus for channel state information acquisition, the apparatus comprising: The apparatus comprises: A first determining module is configured to determine a control channel resource corresponding to a reference signal according to a predetermined rule; A first obtaining module is configured to obtain channel state information corresponding to the reference signal according to parameters of the control channel resource, wherein the channel state information comprises a physical downlink control channel block error rate (PDCCH BLER), and the parameters of the control channel resource comprise an aggregation level, a power difference between the reference signal and control information in the control channel resource, a cyclic prefix (CP) length, a subcarrier spacing, and a mapping mode of a control channel element to a resource group; the first obtaining module is configured to determine the PDCCH BLER corresponding to the reference signal according to a reception quality of the reference signal and the parameters of the control channel resource, set a channel state detection counter corresponding to the reference signal, and determine the channel state information corresponding to the reference signal according to the channel state detection counter; the channel state detection counter comprises a configuration information of the reference signal being reconfigured once, and the channel state detection counter being cleared once.

23. An apparatus for acquiring channel state information, the apparatus comprising: The apparatus comprises: A second determining module is configured to determine a control channel transmission parameter hypothesis according to an agreed parameter; A second obtaining module is configured to obtain channel state information of a reference signal according to the control channel transmission parameter hypothesis, wherein the channel state information comprises a physical downlink control channel block error rate (PDCCH BLER), and the agreed parameter comprises at least one of the following: a power difference between the reference signal and control information in a control channel resource; a power difference between the reference signal and a demodulation reference signal of the control channel resource; a power difference between control information in the control channel resource and the demodulation reference signal of the control channel resource; a transmission mode of control channel information; a mapping relationship between a demodulation reference signal of the control channel and Y reference signals; and a mapping relationship between a layer and Y reference signals, wherein Y is a positive integer.

24. An apparatus for managing a channel state detection counter, the apparatus comprising: The apparatus comprises: An executing module is configured to perform a predetermined operation on a channel state detection counter when a predetermined event occurs, and the predetermined operation comprises clearing the channel state detection counter, wherein the predetermined event comprises at least one of the following: a parameter of a control channel resource being reconfigured; and configuration information of a reference signal being reconfigured.

25. An apparatus for channel state information feedback, the apparatus comprising: The apparatus comprises: The sending module is configured to send signaling information on a dynamically scheduled channel or signal, wherein the signaling information comprises channel state information. The dynamically scheduled channel or signal is scheduled by physical downlink control information. The channel comprises an uplink physical data channel, and the signaling information is used to indicate at least one of the following information: first information used to indicate that the performance of all reference signals in a reference signal set 1 is lower than a predetermined threshold; second information used to indicate that at least X reference signals in a reference signal set 2 have a quality higher than a predetermined threshold, wherein X is a positive integer; third information used to indicate indication information of the reference signals in the reference signal set 2 having a quality higher than the predetermined threshold; and fourth information comprising beam recovery request information.

26. A storage medium characterized by The storage medium stores a computer program, and the computer program is configured to execute the method in any one of claims 1 to 21 when running. 27.An electronic device comprising a memory and a processor, the electronic device characterized in that, The memory stores a computer program, and the processor is configured to execute the computer program to execute the method in any one of claims 1 to 21.

Images