CN106559182B

CN106559182B - Method, device and system for obtaining configuration of channel parameters

Info

Publication number: CN106559182B
Application number: CN201510623574.9A
Authority: CN
Inventors: 蔡剑兴; 陈艺戬; 肖华华; 李儒岳; 鲁照华; 李永; 王瑜新; 吴昊
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2020-06-16
Anticipated expiration: 2035-09-25
Also published as: CN106559182A; WO2017050086A1

Abstract

The invention provides a method, a device and a system for acquiring configuration of channel parameters, wherein indication information is configured through a base station; the base station configures the pre-coding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS according to the indication information, so that the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Description

Method, device and system for obtaining configuration of channel parameters

Technical Field

The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for acquiring channel parameter configuration.

Background

In an actual wireless communication system, since a radio propagation path between a base station and a terminal is easily affected by the environment, a radio channel has a large randomness. Therefore, in order to accurately recover the signal transmitted by the base station at the terminal, a more accurate estimation of the channel state information must be made. Therefore, the accuracy of Channel State Information (CSI) estimation plays a crucial role in the performance of the wireless communication system.

In early LTE releases, such as Release 8 (abbreviated as Rel-8), a terminal usually uses a Common Reference Signal (CRS) for CSI estimation, and the Reference Signal (RS) used in this Release is a non-precoded RS, and such RSs are generally transmitted in a manner of mapping antennas and antenna ports of a base station one to one. In Rel-10, in order to enable a terminal to estimate and feed back Channel State Information (CSI) of a larger bandwidth for a maximum of 8 antenna ports, a new RS, i.e., a Channel State Information reference symbol CSI-RS, is introduced. Different from the RS in the early version which is used for both CSI estimation and signal demodulation, the newly introduced CSI-RS is a reference signal which is sent by the base station and is specially used for channel measurement, the terminal performs CSI estimation based on the pilot symbols sent by the base station to obtain information of channel matrices H of different transmit-receive antennas at different time-frequency resource positions, and then CSI quantization and feedback can be performed based on the channel matrices H.

With the further evolution of the 3GPP standard, a CSI-RS (Beamformed CSI-RS, abbreviated as BFed CSI-RS) for beam forming is newly introduced in the Rel-13 release. The BFed CSI-RS means that the base station performs precoding processing on the CSI-RS before transmitting the CSI-RS, so-called precoding means that a transmitted signal is subjected to pre-processing at a transmitting end under the condition that channel state information is known, so as to facilitate signal detection of a receiver. In the LTE system, a common precoding technique is to select a suitable precoding matrix from a predefined set of precoding matrices to perform weighting processing on the RS, and then transmit the RS by the base station. The BFed CSI-RS introduced by Rel-13 generally adopts one-to-many mapping instead of one-to-one mapping between antenna ports and base station antennas, and adopts a precoding technology when mapping, and different precodes can correspond to different beam directions.

The BFed CSI-RS has various configuration methods, which mainly comprises the following conditions:

configuring multiple sets of CSI-RS configuration: one beam can correspond to one set of CSI-RS configuration, which has high flexibility, and different pilot parameters (cycle port number, power parameters, etc.) can be configured for different configurations, but the configuration signaling overhead is large. Each CSI-RS configuration comprises a plurality of ports, the ports generally have the same precoding, and the terminal selects the beam as the CSI-RS configuration;

configuring a set of CSI-RS configuration, but one beam including multiple resource sets may correspond to one resource set, which is a way that flexibility is general, different pilot parameters (number of periodic ports, power parameters, etc.) cannot be configured for different configurations, but configuration signaling overhead is low, different corresponding beams of resource sets are different, multiple ports may be included in resource, which generally have the same precoding, and the terminal selects a beam that is to select a resource set.

Configuring a set of CSI-RS configuration set, but including a plurality of port groups, where different corresponding beams of the port groups are different, the port groups may include 1 or more ports, and these ports generally have the same precoding, and the terminal-selected beam is the selected port group.

The BFed CSI-RS is generally selected to perform Beam Index feedback, and the number of the Beam indexes is generally 1 or more; the latter application scenario with higher overhead will be less.

In the current protocol version, when performing channel measurement on the CSI-RS pilot, the following techniques are generally adopted: the terminal determines the position of a Reference Resource (CSI Reference Resource) corresponding to the current CSI quantization, the Reference Resource corresponding to the CSI quantization is generally located in a subframe where a CSI-RS which needs to be subjected to quantization feedback and is sent for the last time is located, the terminal performs joint CSI estimation on the subframe where the CSI-RS is located and CSI-RSs sent in X previous CSI-RS sending subframes, noise suppression is performed through time domain correlation, and CSI estimation performance is improved. On the other hand, the CSI estimation of the resource block in each subframe by the terminal is estimated according to the received CSI-RS on each resource block, and if the CSI-RSs contained in the pilot configuration of the same set of CSI-RSs have the same precoding or do not have precoding, the terminal can perform joint CSI estimation on Y CSI-RSs on a plurality of resource blocks in the same resource block, perform noise suppression through frequency domain correlation, and improve the CSI estimation performance.

The 3GPP also introduces a concept of CSI process, and the base station may configure a plurality of CSI processes for the terminal, where each CSI process is equivalent to a feedback process, and each CSI process is independent and may perform parameter configuration respectively. The configuration of the CSI process may be divided into two feedback categories, Class a and Class B, where the former is mainly applied to feedback under non-precoded CSI-RS, and the feedback amount is large, for example, a first Precoding Matrix Index (PMI) that needs to feed back statistics of long term/wideband and a second PMI of short term/subband are needed, and the latter only needs to feed back less channel information based on precoded CSI-RS, for example, the second PMI of short term/subband.

In the LTE system, a coherent detection method is often used by the terminal, and therefore, the channel must be estimated. In general, with coherent detection methods, the base station must insert a known RS into the transmitted signal structure, and such CSI estimation methods are also referred to as pilot-based CSI estimation methods. For the classification of the CSI estimation method, implementation criteria can be classified into Linear Minimum Mean Square Error (LMMSE) estimation, least Square estimation (LS) estimation, and the like.

The existing CSI estimation technology has the defects that: from the time domain perspective, since the CSI-RS can perform precoding flexibly at different time domain subframe positions, and the precoding at different subframe positions may be different, this way enables a terminal to have an estimation error if it continues to use any X subframes to perform joint CSI estimation during channel measurement, because the correlation between different precoding pilots is affected by a precoding weight, and the precoding weight terminal cannot predict. Similarly, from the frequency domain perspective, the precoding of CSI-RS on different resource blocks within the same subframe may be different, which may cause the terminal to have an error if it continues to use any Y resource blocks for joint CSI estimation during channel measurement. Therefore, in Rel-13, in order to avoid serious estimation errors, only a relatively conservative method can be adopted, and correlation is not used for suppressing the influence of noise, so that the optimal estimation performance cannot be obtained, and an effective solution is not proposed at present.

Disclosure of Invention

The invention provides a method, a device and a system for acquiring configuration of channel parameters, which are used for at least solving the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation in the related art.

According to an aspect of the present invention, there is provided a channel parameter configuration method, including: base station configuration indication information; and the base station configures a pre-coding frequency domain granularity parameter/a measurement limiting parameter of the CSI-RS according to the indication information.

Further, the indication information includes at least one of: the channel state reference signal CSI-RS comprises high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabled PMI disabling signaling indication, feedback mode configuration signaling indication, feedback Type Class indication information, Type indication information of the channel state reference signal CSI-RS and feedback mode indication information.

Further, the step of configuring, by the base station, a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS according to the indication information includes: in a first mode, when the indication information indicates the high layer frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: configuring the pre-coding frequency domain granularity parameter as K according to the high-layer frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling indication; in a second mode, when the indication information is the pmia misalignment signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: judging whether the PMI disabling signaling indication is enabled; if the judgment result is yes, configuring the pre-coding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, configuring the pre-coding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; in a third mode, when the indication information is the feedback mode configuration signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in the feedback mode configuration signaling indication; when the feedback mode is a first type of preset mode set, configuring the pre-coding frequency domain granularity parameter K as X; when the feedback mode is a second-type preset mode set or a third-type preset mode set, configuring the precoding frequency domain granularity parameter K as Y; in a fourth mode, when the indication information is the feedback Class indication information, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback type Class in the feedback type Class indication information; when the feedback type Class is a second feedback type, configuring the precoding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, configuring the precoding frequency domain granularity parameter K as Y; in a fifth mode, when the indication information is Type indication information of the CSI-RS, the step of configuring a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS includes: detecting the Type in the Type indication information of the CSI-RS; when the Type is a first Type, configuring the precoding frequency domain granularity parameter K as X; when the Type is a second Type, configuring the precoding frequency domain granularity parameter K as Y; a sixth mode, when the indication information is the feedback mode indication information, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in the feedback mode indication information; when the feedback mode is periodic feedback, configuring the pre-coding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring the pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

Further, the pre-coding frequency domain granularity parameter K is determined according to the current bandwidth.

Further, the Type in the Type indication information of the CSI-RS comprises at least one of the following: the CSI-RS comprises a periodic CSI-RS, an aperiodic CSI-RS, a precoded CSI-RS, a non-precoded CSI-RS, a full-bandwidth CSI-RS, a partial-bandwidth CSI-RS, an aggregated configured CSI-RS and a non-aggregated configured CSI-RS.

Further, the precoding frequency domain granularity parameter includes: a CSI-RS bundling state and/or a CSI-RS bundling granularity.

Further, the method further comprises: the base station indicates a binding state for configuring the CSI-RS through the high-layer frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling, wherein the binding state comprises: bound or unbound.

According to an aspect of the present invention, another method for acquiring channel parameters is provided, including: a terminal receives indication information sent by a base station; and the terminal acquires a pre-coding frequency domain granularity parameter/a measurement limiting parameter of the CSI-RS according to the indication information.

Further, the indication information includes at least one of: the method comprises the steps of high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabled PMI disabling signaling indication, feedback mode configuration signaling indication, feedback Type Class indication information, Type indication information of the CSI-RS, feedback mode indication information and preset granularity parameters.

Further, the step of the terminal obtaining the pre-coding frequency domain granularity parameter/measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information includes: in a first mode, when the indication information indicates the high-level frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling, the step of obtaining the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: acquiring the pre-coding frequency domain granularity parameter as K according to the high-layer frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling indication; in a second mode, when the indication information is the pmia misalignment signaling indication, the step of obtaining the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: judging whether the PMI disabling signaling indication is enabled; if the judgment result is yes, acquiring the pre-coding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, acquiring the pre-coding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; in a third mode, when the indication information is the feedback mode configuration signaling indication, the step of obtaining the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in the feedback mode configuration signaling indication; when the feedback mode is a first type of preset mode set, acquiring the pre-coding frequency domain granularity parameter K as X; when the feedback mode is a second-type preset mode set or a third-type preset mode set, acquiring the precoding frequency domain granularity parameter K as Y; in a fourth mode, when the indication information is the feedback Class indication information, the step of obtaining the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes: detecting a feedback type Class in the feedback type Class indication information; when the feedback type Class is a second feedback type, acquiring the precoding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, acquiring the precoding frequency domain granularity parameter K as Y; in a fifth mode, when the indication information is Type indication information of the CSI-RS, the step of obtaining a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS includes: detecting the Type in the Type indication information of the CSI-RS; when the Type is a first Type, acquiring the pre-coding frequency domain granularity parameter K as X; when the Type is a second Type, acquiring the pre-coding frequency domain granularity parameter K as Y; in a sixth mode, when the indication information is the feedback mode indication information, the step of obtaining the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in the feedback mode indication information; when the feedback mode is periodic feedback, acquiring the precoding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, acquiring the pre-coding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; in a seventh mode, when the indication information is the preset granularity parameter, the step of obtaining the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: and acquiring the pre-coding frequency domain granularity parameter as K according to the preset granularity parameter.

Further, the method further comprises: the terminal obtains the binding state of the CSI-RS through the indication of the high-layer frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling, wherein the binding state comprises the following steps: bound or unbound.

According to an aspect of the present invention, there is provided a method for configuring channel parameters, including: base station configuration indication information; and the base station configures a pre-coding time domain granularity parameter/a measurement limiting parameter of the CSI-RS according to the indication information.

Further, the indication information includes at least one of: a precoding matrix indicator non-enabled PMIdecoupling signaling indication, a feedback mode configuration signaling indication, feedback type Class indication information, channel state reference signal configuration CSI-RS configuration indication information, a feedback mode indication information, antenna port number indication information and a CSI report type.

Further, the step of configuring, by the base station, a precoding time domain granularity parameter/a measurement restriction parameter of the CSI-RS according to the indication information includes: in a first mode, when the indication information is the PMI disabling signaling indication, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: judging whether the PMI disabling signaling indication is enabled; if the judgment result is yes, configuring the pre-coding time domain granularity parameter K as X; under the condition that the judgment result is negative, configuring the pre-coding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; in a second mode, when the indication information is the feedback mode configuration signaling indication, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in the feedback mode configuration signaling indication; when the feedback mode is a first type of preset mode set, configuring the precoding time domain granularity parameter K as X; when the feedback mode is a second type preset mode set or a third type preset mode set, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; in a third mode, when the indication information is the feedback Class indication information, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback type Class in the feedback type Class indication information; when the feedback type Class is a second feedback type, configuring the precoding time domain granularity parameter K as X; when the feedback type Class is a first feedback type, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; in a fourth mode, when the indication information configures CSI-RS configuration indication information for the CSI-RS, the step of configuring a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: the base station configures a set of CSI-RS configuration, wherein the CSI-RS configuration comprises a plurality of resource sets, one beam corresponds to one resource set, the different corresponding beams of the resource sets are different, the resource sets comprise a plurality of ports, and the ports have the same precoding; after the base station determines CSI-RS configuration, configuring the precoding time domain granularity parameter to be K through a high-level signaling/physical layer signaling indication; in a fifth mode, when the indication information is the feedback mode indication information, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in the feedback mode indication information; when the feedback mode is periodic feedback, configuring the precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; in a sixth mode, when the indication information is the antenna port number indication information, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: when the number of antenna ports used by the base station for transmission is M1, configuring the precoding time domain granularity parameter K as X; when the number of antenna ports used by the base station for transmission is M2, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and when M1 is less than or equal to M2, X is greater than or equal to Y; in a seventh aspect, when the indication information is a CSI report type, the step of configuring a precoding time domain granularity parameter// measurement restriction parameter of a CSI-RS includes: and according to the periodic resetting of the time domain granularity parameter along with the periodic feedback of the CSI report type, the base station configures the reset period and/or the subframe offset of the binding state according to the longest period of the CSI report type.

Further, the pre-coding time domain granularity parameter includes: a CSI-RS bundling state and/or a CSI-RS bundling granularity.

According to an aspect of the present invention, there is provided a method for obtaining channel parameters, including: a terminal receives indication information sent by a base station;

and the terminal acquires a pre-coding time domain granularity parameter/measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information.

Further, the indication information includes at least one of: the method comprises the following steps of precoding matrix indicator non-enabled PMIdecoupling signaling indication, feedback mode configuration signaling indication, feedback type Class indication information, resource scheduling indication information, feedback mode indication information, antenna port number indication information and CSI report type.

Further, the step of the terminal obtaining the pre-coding time domain granularity parameter/measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information includes: in a first mode, when the indication information is the PMI disabling signaling indication, the step of obtaining the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: judging whether the PMI disabling signaling indication is enabled; if the judgment result is yes, acquiring the precoding time domain granularity parameter K as X; under the condition that the judgment result is negative, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; in a second mode, when the indication information is the feedback mode configuration signaling indication, the step of obtaining the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in the feedback mode acquisition signaling indication; when the feedback mode is a first type of preset mode set, acquiring the precoding time domain granularity parameter K as X; when the feedback mode is a second type preset mode set or a third type preset mode set, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; in a third mode, when the indication information is the feedback Class indication information, the step of obtaining the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback type Class in the feedback type Class indication information; when the feedback type Class is a second feedback type, acquiring the precoding time domain granularity parameter K as X; when the feedback type Class is a first feedback type, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; in a fourth mode, when the indication information is the Resource specific indication information, the step of obtaining the precoding time domain granularity parameter/the measurement restriction parameter of the CSI-RS includes: the terminal determines the Resource set number contained in a set of CSI-RS configuration configured by the base station according to the Resource specific indication information; the terminal acquires a precoding time domain granularity parameter of a channel state reference signal (CSI-RS) as K according to the received high-layer/physical layer indication signaling; in a fifth mode, when the indication information is the feedback mode indication information, the step of obtaining the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in the feedback mode indication information; when the feedback mode is periodic feedback, acquiring the precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, acquiring the precoding time domain granularity parameter K as Y; wherein X < Y; in a sixth mode, when the indication information is the antenna port number indication information, the step of obtaining the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes: when the terminal determines that the number of antenna ports used for transmission by the base station is M1, acquiring the precoding time domain granularity parameter K as X; when the terminal determines that the number of antenna ports used for transmission by the base station is M2, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and when M1 is less than or equal to M2, X is greater than or equal to Y; in a seventh mode, when the indication information is a CSI report type, the step of obtaining a precoding time domain granularity parameter// measurement restriction parameter of a CSI-RS includes: and the terminal determines the periodical resetting of the binding state of the CSI-RS and/or the subframe offset of the binding state according to the longest period of the report type of the CSI.

According to another aspect of the present invention, there is provided an apparatus for configuring channel parameters, including: the first configuration module is used for configuring indication information; and the second configuration module is used for configuring the pre-coding frequency domain granularity parameter/the measurement limiting parameter of the CSI-RS according to the indication information.

Further, the indication information includes at least one of the following: under the conditions of high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabling PMI disabling signaling indication, feedback mode configuration signaling indication, feedback category Class indication information, category Type indication information of the CSI-RS, and feedback mode indication information, the second configuration module includes: a first configuration unit, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the high layer frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling indication, where the precoding frequency domain granularity parameter is configured to be K according to the high layer frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling indication; or, a second configuring unit, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the PMI disabling signaling indication, where whether the PMI disabling signaling indication is enabled is determined; if the judgment result is yes, configuring the pre-coding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, configuring the precoding frequency domain granularity parameter K as Y, wherein X is not equal to Y, X and Y are integers, and X is less than Y; or, a third configuring unit, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the feedback mode configuration signaling indication, wherein a feedback mode in the feedback mode configuration signaling indication is detected; when the feedback mode is a first type of preset mode set, configuring the pre-coding frequency domain granularity parameter K as X; when the feedback mode is a second-type preset mode set or a third-type preset mode set, configuring the precoding frequency domain granularity parameter K as Y; or, the fourth configuring unit is configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the feedback Class indication information, where a feedback Class in the feedback Class indication information is detected; when the feedback type Class is a second feedback type, configuring the precoding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, configuring the precoding frequency domain granularity parameter K as Y; or, a fifth configuration unit, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is Type indication information of the CSI-RS, where a Type in the Type indication information of the CSI-RS is detected; when the Type is a first Type, configuring the precoding frequency domain granularity parameter K as X; when the Type is a second Type, configuring the precoding frequency domain granularity parameter K as Y; or, a sixth configuring unit, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the feedback mode indication information, wherein a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, configuring the precoding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring the pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

According to another aspect of the present invention, there is provided another apparatus for acquiring channel parameters, including: the receiving module is used for receiving the indication information sent by the base station; and the acquisition module is used for acquiring the pre-coding frequency domain granularity parameter/measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information.

Further, the receiving module is configured to receive indication information sent by the base station; and the acquisition module is used for acquiring the pre-coding frequency domain granularity parameter/measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information.

According to another aspect of the present invention, there is provided a device for configuring channel parameters, including: the first configuration module is used for configuring indication information; and the second configuration module is used for configuring a precoding time domain granularity parameter/a measurement limiting parameter of the CSI-RS according to the indication information.

Further, the indication information includes at least one of the following: the second configuration module, when a precoding matrix indicator non-enabling pmidibrating signaling indication, a feedback mode configuration signaling indication, feedback Class indication information, CSI-RS configuration indication information of channel state reference signal configuration, a feedback mode indication information, antenna port number indication information, and a CSI report type are present, includes: a first configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the PMI disabling signaling indication, wherein it is determined whether the PMI disabling signaling indication is enabled; if the judgment result is yes, configuring the pre-coding time domain granularity parameter K as X; under the condition that the judgment result is negative, configuring the pre-coding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; or, a second configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the feedback mode configuration signaling indication, wherein a feedback mode in the feedback mode configuration signaling indication is detected; when the feedback mode is a first type of preset mode set, configuring the precoding time domain granularity parameter K as X; when the feedback mode is a second type preset mode set or a third type preset mode set, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; or, a third configuring unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the feedback Class indication information, wherein a feedback Class in the feedback Class indication information is detected; when the feedback type Class is a second feedback type, configuring the precoding time domain granularity parameter K as X; when the feedback type Class is a first feedback type, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; or, a fourth configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information configures CSI-RS configuration indication information for the CSI-RS, where a set of CSI-RS configurations is configured, where a CSI-RS configuration includes multiple resource sets, one beam corresponds to one resource set, the resource sets correspond to different beams, the resource sets include multiple ports, and the ports have the same precoding; after determining CSI-RSconfiguration, configuring the pre-coding time domain granularity parameter to be K through a high-level signaling/physical layer signaling indication; or, a fifth configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the feedback mode indication information, wherein a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, configuring the precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; or, a sixth configuration unit, configured to configure, when the indication information is the antenna port number indication information, a precoding time domain granularity parameter/measurement restriction parameter of a channel state reference signal CSI-RS, where, when the number of antenna ports used by the base station for transmission is M1, the precoding time domain granularity parameter K is configured to be X; when the number of antenna ports used by the base station for transmission is M2, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and when M1 is less than or equal to M2, X is greater than or equal to Y; a seventh configuration unit, configured to configure a precoding time domain granularity parameter/measurement limit of a CSI-RS when the indication information is a CSI report type, where a reset period and/or a subframe offset of a binding state is configured through a longest period of the CSI report type according to a periodic reset of the time domain granularity parameter along with a periodic feedback of the CSI report type.

According to another aspect of the present invention, there is provided another apparatus for acquiring channel parameters, including: the receiving module is used for receiving the indication information sent by the base station; and the acquisition module is used for acquiring a precoding time domain granularity parameter/a measurement limiting parameter of the CSI-RS according to the indication information.

Further, the indication information includes at least one of the following: under the condition that a precoding matrix indicator non-enabled PMIdecoupling signaling indication, a feedback mode configuration signaling indication, feedback type Class indication information, resource scheduling indication information, feedback mode indication information, antenna port number indication information and a CSI report type are provided, the obtaining module comprises: a first obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the PMI disabling signaling indication, where whether the PMI disabling signaling indication is enabled is determined; if the judgment result is yes, acquiring the precoding time domain granularity parameter K as X; under the condition that the judgment result is negative, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; or, a second obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the feedback mode configuration signaling indication, where the feedback mode in the feedback mode acquisition signaling indication is detected; when the feedback mode is a first type of preset mode set, acquiring the precoding time domain granularity parameter K as X; when the feedback mode is a second type preset mode set or a third type preset mode set, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; or, a third obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the feedback Class indication information, where a feedback Class in the feedback Class indication information is detected; when the feedback type Class is a second feedback type, acquiring the precoding time domain granularity parameter K as X; when the feedback type Class is a first feedback type, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; or, a fourth obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the Resource specfic indication information, where a Resource set number included in a set of CSI-RSconfiguration configured by the base station is determined according to the Resource specfic indication information; acquiring a precoding time domain granularity parameter K of a channel state reference signal CSI-RS according to a received high-layer/physical layer indication signaling; or, a fifth obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the feedback mode indication information, where a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, acquiring the precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, acquiring the precoding time domain granularity parameter K as Y; wherein X < Y; or, a sixth obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a channel state reference signal CSI-RS when the indication information is the antenna port number indication information, where when the terminal determines that the number of antenna ports used by the base station for transmission is M1, the precoding time domain granularity parameter K is X; when the terminal determines that the number of antenna ports used for transmission by the base station is M2, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and when M1 is less than or equal to M2, X is greater than or equal to Y; a seventh obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is a CSI report type, where a periodic reset of a binding state of the CSI-RS and/or a subframe offset of the binding state are determined by a longest period of the CSI report type.

According to another aspect of the present invention, there is provided a system for acquiring configuration of channel parameters, including: the base station is in communication connection with the terminal, wherein the base station is a channel parameter acquisition device of any one of the channel parameter acquisition device and the other channel parameter acquisition device; the terminal is the channel parameter acquiring device of any one of the another channel parameter acquiring device and the another channel parameter acquiring device.

According to the invention, indication information is configured by adopting the base station; and the base station configures the pre-coding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS according to the indication information. The problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method adopted for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a flowchart of a configuration method of channel parameters according to an embodiment of the present invention;

fig. 2 is a flowchart of a channel parameter acquisition method according to an embodiment of the present invention;

fig. 3 is a flowchart of another channel parameter configuration method according to an embodiment of the present invention;

fig. 3-a is a schematic diagram of a configuration state when the binding granularity is K ═ 2;

fig. 4 is a flowchart of another channel parameter acquisition method according to an embodiment of the present invention;

fig. 4-a is a schematic diagram of CSI joint estimation after the terminal determines that the CSI-RS configuration state is K-2;

FIG. 5-a is a schematic diagram of resetting a binding state and/or subframe offset according to a longest period;

fig. 5 is a block diagram of a configuration apparatus of channel parameters according to an embodiment of the present invention;

fig. 6 is a block diagram of a configuration apparatus of channel parameters according to an embodiment of the present invention;

fig. 7 is a block diagram of a channel parameter acquisition apparatus according to another embodiment of the present invention;

fig. 8 is a block diagram of a channel parameter obtaining apparatus according to another embodiment of the present invention; and the number of the first and second groups,

fig. 9 is a structural diagram of a system for acquiring configuration of channel parameters according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In the method, the apparatus, and the system for acquiring channel parameters provided in the embodiments of the present application, a base station includes, but is not limited to: various wireless communication devices such as macro base stations, micro base stations, wireless access points, and the like. Terminals include, but are not limited to: various terminals such as data cards, mobile phones, notebook computers, personal computers, tablet computers, personal digital assistants, bluetooth, and various wireless communication devices such as relays, remote devices, and wireless access points.

Example one

In this embodiment, a method for configuring channel parameters is provided, and fig. 1 is a flowchart of a method for acquiring channel parameters according to an embodiment of the present invention, as shown in fig. 1, at a base station side, the flowchart includes the following steps:

step S102, configuring indication information by a base station;

and step S104, the base station configures the pre-coding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS according to the indication information.

Specifically, on the base station side, the method for acquiring Channel parameters provided in the embodiment of the present application may be applied to a method for estimating Channel State Information (CSI), and estimates the CSI by configuring a precoding frequency domain granularity parameter of a CSI-RS, so as to improve the performance of CSI estimation, where first, the base station configures indication Information, and then, the base station configures the precoding frequency domain granularity parameter of a CSI-RS according to the indication Information.

Through the steps, configuring indication information through the base station; the base station configures the pre-coding frequency domain granularity parameter of the CSI-RS according to the indication information, so that the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Further, the indication information includes at least one of: the method comprises the steps of high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabled PMI disabling signaling indication, feedback mode configuration signaling indication, feedback Type Class indication information, Type indication information of a channel state reference signal CSI-RS and feedback mode indication information.

Further, the step of configuring, by the base station, the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS according to the indication information includes:

in a first mode, when the indication information is an indication of a high-layer frequency domain granularity parameter configuration signaling or a physical layer frequency domain granularity parameter signaling, the step of configuring a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

configuring a precoding frequency domain granularity parameter as K according to a high-layer frequency domain granularity parameter configuration signaling or a physical layer frequency domain granularity parameter signaling instruction, wherein the precoding frequency domain granularity parameter K is 1, and K is equal to M, wherein M is the number of radio bearer RBs with the largest current bandwidth;

specifically, in the first scenario, when the indication information is the high-level frequency domain granularity parameter configuration signaling, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS by the base station includes:

and the base station configures the state of the CSI-RS through the current bandwidth, wherein the state comprises the binding state and the binding granularity K of the CSI-RS. The relationship between bandwidth size and binding granularity is shown in table 1 below, where table 1 is a table of bandwidth and binding granularity relationships.

TABLE 1

Wherein, K_i(i is more than or equal to 1 and less than or equal to 6), U and V are integers, U is more than 20, V is more than 100, and K₀≤K₁≤K₂≤K₃≤K₄≤K₅≤K₆I.e., for larger bandwidths, the granularity of bundling for CSI-RS is larger.

When the binding granularity is K, the binding method of the base station to the CSI-RS is as follows: the base station binds the CSI-RSs on the continuous K RBs from the first RB, namely the CSI-RSs on the continuous K RBs adopt the same precoding. Specifically, assuming there are a total of M RBs within the bandwidth, the M RBs are divided into at most N +1 groups, where M is KN + Q, K, N and Q are integers and 0 ≦ Q < K. Thus, the first N groups contain K RBs per group and the last group Q RBs. The base station uses the same precoding matrix for the RBs in the same group, that is:

wherein RB_i(1. ltoreq. i. ltoreq.M) represents the ith non-precoded RB,

represents the ith precoded RB, w_iRepresenting the ith precoding matrix in the set of precoding matrices.

In a second scenario, when the indication information is a physical layer frequency domain granularity parameter signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS by the base station includes:

and the base station configures the state of the CSI-RS through the current bandwidth, wherein the state comprises the binding state and the binding granularity K of the CSI-RS. The relationship between bandwidth size and binding granularity is constrained by table 1.

When the binding granularity is K, the binding method of the base station to the CSI-RS is as follows: assuming a total of M RBs within the bandwidth, the M RBs are divided into at most N +1 groups, where M is KN + Q, K, N and Q are integers and 0 ≦ Q < K. Thus, the first N groups contain K RBs per group and the last group Q RBs. The base station uses the same precoding matrix for the RBs in the same group, that is:

wherein RB_i(1. ltoreq. i. ltoreq.M) represents the ith non-precoded RB,

In a second mode, when the indication information is a PMI disabling signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

judging whether PMI disabling signaling indication is enabled; if the judgment result is yes, configuring a pre-coding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, configuring a pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

Specifically, when the indication information is a PMI disabling signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS by the base station includes:

the base station configures the state of the CSI-RS through enabling or not enabling PMI disabling signaling, wherein the state includes the binding state and the binding granularity K of the CSI-RS, and the binding granularity when the base station enables the PMI disabling signaling is agreed to be smaller than or equal to the binding granularity when the PMI disabling signaling is not enabled.

wherein RB_i(1. ltoreq. i. ltoreq.M) represents the ith non-precoded RB,

In a third mode, when the indication information is a feedback mode configuration signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

here, a feedback mode in the feedback mode configuration signaling indication is detected; when the feedback mode is a first type of preset mode set, configuring a pre-coding frequency domain granularity parameter K as X; when the feedback mode is a second-type preset mode set or a third-type preset mode set, configuring a precoding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

Specifically, when the indication information is a feedback mode configuration signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS by the base station includes:

and the base station configures the state of the CSI-RS through the feedback mode configuration signaling, wherein the state comprises the binding state and the binding granularity K of the CSI-RS. The base station configures a feedback mode to be X-0, and when the feedback mode is a mode of X-1 or X-2, the base station configures a feedback mode to indicate that the binding granularity is K-Y, X and Y are different integers, 1< ═ X, Y < ═ M, and M is the current maximum RB number of the bandwidth, and X < Y is satisfied.

wherein RB_i(1. ltoreq. i. ltoreq.M) represents the ith non-precoded RB,

In a fourth mode, when the indication information is feedback Class indication information, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

here, a feedback category Class in the feedback category Class indication information is detected; when the feedback type Class is a second feedback type, configuring a pre-coding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, configuring a pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

Specifically, when the indication information is feedback Class indication information, the step of configuring the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS by the base station includes:

and the base station indicates the state of the configuration CSI-RS through a feedback category (Class), wherein the state comprises the binding state and the binding granularity K of the CSI-RS. When the feedback type configured by the base station is Class B, the base station agrees to indicate the binding granularity K which is equal to X, when the feedback type is Class A, the base station agrees to indicate the binding granularity K which is equal to Y, X and Y are different integers, 1< X, Y < M, M is the current maximum RB number of the bandwidth, and X < Y is satisfied.

wherein RB_i(1. ltoreq. i. ltoreq.M) represents the ith non-precoded RB,

In a fifth mode, when the indication information is Type indication information of a channel state reference signal CSI-RS, the step of configuring a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS includes:

detecting a Type in Type indication information of the CSI-RS; when the Type is a first Type, configuring a pre-coding frequency domain granularity parameter K as X; when the Type is a second Type, configuring a pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

Specifically, when the indication information is Type indication information of a CSI-RS, the step of configuring, by the base station, a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS includes:

the base station configures the state of the CSI-RS through the CSI-RS Type (Type) indication information, wherein the state comprises the binding state and the binding granularity K of the CSI-RS:

when the channel state information is periodic CSI-RS, indicating the binding granularity K ═ X; when aperiodic CSI-RS, it is agreed to indicate a bundling granularity K ═ Y, where X, Y are integers and 1< ═ X, Y < ═ M. For periodic CSI-RS, the binding granularity configured by the base station is fixed. For aperiodic CSI-RS, the bundling granularity configured by the base station may be dynamically adjusted to match channel variations according to changes in channel conditions.

When the CSI-RS is non-precoded, agreeing to indicate that the binding granularity K is X; when being a precoded CSI-RS, it is agreed to indicate a bundling granularity K ═ Y, where X, Y are integers and 1 ═ Y < ═ X < ═ M.

When the CSI-RS is non-aggregated, agreeing to indicate the binding granularity K ═ X; when aggregated CSI-RS, it is agreed to indicate a bundling granularity K ═ Y, where X, Y are integers and 1 ═ X ═ Y ≦ M.

When the CSI-RS is a CSI-RS with partial bandwidth, the CSI-RS indicates a binding granularity K ═ X; when being a full-bandwidth CSI-RS, it is agreed to indicate a bundling granularity K ═ Y, where X, Y are integers and 1 ═ X ═ Y ≦ M.

When the binding granularity is K, the binding method of the base station to the CSI-RS is as follows: the base station binds the CSI-RSs on the continuous K RBs from the first RB, namely the CSI-RSs on the continuous K RBs adopt the same precoding. More specifically, assuming there are a total of M RBs within the bandwidth, the M RBs are divided into at most N +1 groups, where M is KN + Q, K, N and Q are integers and 0 ≦ Q < K. Thus, the first N groups contain K RBs per group and the last group Q RBs. The base station uses the same precoding matrix for the RBs in the same group, that is:

wherein RB_i(1. ltoreq. i. ltoreq.M) represents the ith non-precoded RB,

In a sixth mode, when the indication information is feedback mode indication information, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

here, a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, configuring a precoding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring a pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

Specifically, when the indication information is feedback mode indication information, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS by the base station includes:

and the base station indicates the state of the configured CSI-RS in a feedback mode, wherein the state comprises the binding state and the binding granularity K of the CSI-RS. When the feedback mode configured by the base station is periodic feedback, the indication binding granularity K is agreed to be X, when the feedback mode is aperiodic feedback, the indication binding granularity K is agreed to be Y, X and Y are different integers, 1< ═ X, Y < ═ M, M is the maximum RB number of the current bandwidth, and X < Y is satisfied.

wherein RB_i(1. ltoreq. i. ltoreq.M) represents the ith non-precoded RB,

Further, the Type in the Type indication information of the channel state reference signal CSI-RS includes at least one of: the CSI-RS comprises a periodic CSI-RS, an aperiodic CSI-RS, a precoded CSI-RS, a non-precoded CSI-RS, a full-bandwidth CSI-RS, a partial-bandwidth CSI-RS, an aggregated configured CSI-RS and a non-aggregated configured CSI-RS.

Further, the pre-coding frequency domain granularity parameter includes: a CSI-RS bundling state and/or a CSI-RS bundling granularity.

Further, the method further comprises: the base station indicates a binding state for configuring the CSI-RS through a high-level frequency domain granularity parameter configuration signaling or a physical-level frequency domain granularity parameter signaling, wherein the binding state comprises the following steps: bound or unbound.

Example two

In this embodiment, another method for acquiring a channel parameter is provided, and fig. 2 is a flowchart of a method for determining a channel parameter according to an embodiment of the present invention, as shown in fig. 2, at a terminal side, the flowchart includes the following steps:

step S202, a terminal receives indication information sent by a base station;

and step S204, the terminal acquires the pre-coding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS according to the indication information.

Here, corresponding to the embodiment provided in fig. 1, at the terminal side, in the embodiment of the present application, the terminal receives the indication information sent by the base station, further obtains the precoding frequency domain granularity parameter of the CSI-RS according to the indication information, and further estimates the CSI according to the precoding frequency domain granularity parameter, thereby achieving an effect of improving the estimation performance.

Through the steps, the terminal receives the indication information sent by the base station; the terminal acquires the pre-coding frequency domain granularity parameter of the CSI-RS according to the indication information, so that the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Further, the indication information includes at least one of: the method comprises the steps of high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabled PMI disabling signaling indication, feedback mode configuration signaling indication, feedback Type Class indication information, Type indication information of a channel state reference signal CSI-RS, feedback mode indication information and preset granularity parameters.

Further, the step that the terminal obtains the pre-coding frequency domain granularity parameter/the measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information comprises the following steps:

in a first mode, when the indication information is an indication of a high-level frequency domain granularity parameter configuration signaling or a physical layer frequency domain granularity parameter signaling, the step of obtaining a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

obtaining a pre-coding frequency domain granularity parameter of K according to a high-layer frequency domain granularity parameter configuration signaling or a physical layer frequency domain granularity parameter signaling instruction, wherein the pre-coding frequency domain granularity parameter of K is 1, and K is equal to M, wherein M is the number of Radio Bearer (RB) with the largest current bandwidth;

specifically, in the first scenario, when the indication information is a high-level frequency domain granularity parameter configuration signaling, the step of the terminal acquiring the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

the terminal receives the high-level signaling, and determines the binding state and the binding granularity K of the CSI-RS according to the indication information of the high-level signaling and the constraint relation in the table 1 in the first embodiment.

After determining the binding granularity K, the terminal estimates the CSI by: and the terminal divides the continuous K RBs into a group from the first RB, and estimates the CSI by adopting an LMMSECSI estimation method by utilizing all CSI-RS resources in each group of RBs. More specifically, assuming there are a total of M RBs within the bandwidth, the M RBs are divided into at most N +1 groups, where M is KN + Q, K, N and Q are integers and 0 ≦ Q < K. Thus, the first N groups contain K RBs per group and the last group Q RBs. And the terminal estimates the CSI of each RB in the same group by using all the CSI-RSs of the RBs in the same group by adopting an LMMSE estimation algorithm, namely:

wherein

Indicating the estimation result of CSI for each RB.

In a second scenario, when the indication information is a physical layer frequency domain granularity parameter signaling indication, the step of the terminal acquiring the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

and the terminal receives the physical layer frequency domain granularity parameter configuration signaling, and determines the binding state and the binding granularity K of the CSI-RS according to the indication information of the frequency domain granularity parameter configuration signaling and the constraint relation in the table 1.

After determining the binding granularity K, the terminal estimates the CSI by: and the terminal divides the continuous K RBs into a group from the first RB, and estimates the CSI by adopting an LMMSECSI estimation method by utilizing all CSI-RS resources in each group of RBs. Specifically, assuming there are a total of M RBs within the bandwidth, the M RBs are divided into at most N +1 groups, where M is KN + Q, K, N and Q are integers and 0 ≦ Q < K. Thus, the first N groups contain K RBs per group and the last group Q RBs. And the terminal estimates the CSI of each RB in the same group by using all the CSI-RSs of the RBs in the same group by adopting an LMMSE estimation algorithm, namely:

wherein

Indicating the estimation result of CSI for each RB.

In a second mode, when the indication information is a PMI disabling signaling indication, the step of obtaining a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

judging whether PMI disabling signaling indication is enabled; if the judgment result is yes, acquiring a precoding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, acquiring a pre-coding frequency domain granularity parameter K as Y;

specifically, when the indication information is a PMI disabling signaling indication, the step of the terminal acquiring a precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

and the terminal receives PMI disabling signaling, and determines the binding state and the binding granularity K of the CSI-RS according to the indication information of the PMI disabling signaling.

wherein

Indicating the estimation result of CSI for each RB.

In a third mode, when the indication information is a feedback mode configuration signaling indication, the step of obtaining the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

here, a feedback mode in the feedback mode configuration signaling indication is detected; when the feedback mode is a first type of preset mode set, acquiring a pre-coding frequency domain granularity parameter K as X; when the feedback mode is a second-type preset mode set or a third-type preset mode set, acquiring a precoding frequency domain granularity parameter K as Y;

specifically, when the indication information is a feedback mode configuration signaling indication, the step of the terminal obtaining the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

and the terminal receives the feedback mode indication signaling and determines the binding state and the binding granularity K of the CSI-RS according to the indication information of the feedback mode indication signaling.

wherein

Indicating the estimation result of CSI for each RB.

In a fourth mode, when the indication information is feedback Class indication information, the step of obtaining the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

here, a feedback category Class in the feedback category Class indication information is detected; when the feedback type Class is a second feedback type, acquiring a precoding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, acquiring a precoding frequency domain granularity parameter K as Y;

specifically, when the indication information is feedback Class indication information, the step of the terminal acquiring the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

and the terminal receives the feedback type (class) indication information and determines the binding state and the binding granularity K of the CSI-RS through the feedback type (class) indication information.

wherein

Indicating the estimation result of CSI for each RB.

In a fifth mode, when the indication information is Type indication information of a channel state reference signal CSI-RS, the step of obtaining a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS includes:

detecting a Type in Type indication information of the CSI-RS; when the Type is a first Type, acquiring a pre-coding frequency domain granularity parameter K as X; when the Type is a second Type, acquiring a pre-coding frequency domain granularity parameter K as Y;

specifically, when the indication information is Type indication information of a CSI-RS, the step of the terminal acquiring a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS includes:

the terminal receives the CSI-RS Type (Type) indication information, and determines the binding state and the binding granularity K of the CSI-RS according to the CSI-RS Type (Type) indication information:

when the channel state information is periodic CSI-RS, the terminal determines that the binding granularity K of the CSI-RS is X; when the CSI-RS is non-periodic CSI-RS, the terminal determines the binding granularity K ═ Y of the CSI-RS, wherein X and Y are integers, and 1< ═ X, and Y < ═ M.

When the CSI-RS is non-precoded, the terminal determines the binding granularity K of the CSI-RS to be X; when the channel state information is precoded CSI-RS, the terminal determines the binding granularity K ═ Y of the CSI-RS, wherein X and Y are integers and 1< ═ Y < ═ X < ═ M.

When the CSI-RS is non-aggregated, the terminal determines that the binding granularity K of the CSI-RS is X; when the CSI-RS is aggregated, the terminal determines the binding granularity K ═ Y of the CSI-RS, wherein X and Y are integers and 1< ═ X < ═ Y < ═ M.

When the CSI-RS is the CSI-RS with partial bandwidth, the terminal determines the binding granularity K of the CSI-RS to be X; when the channel state information is a full-bandwidth CSI-RS, the terminal determines a binding granularity K ═ Y of the CSI-RS, wherein X and Y are integers and 1< ═ X < ═ Y < ═ M.

wherein

Indicating the estimation result of CSI for each RB.

In a sixth mode, when the indication information is feedback mode indication information, the step of obtaining the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

here, a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, acquiring a precoding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, acquiring a precoding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y;

specifically, when the indication information is feedback mode indication information, the step of the terminal acquiring the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

and the terminal receives the feedback mode indication information and determines the binding state and the binding granularity K of the CSI-RS through the feedback mode indication information.

wherein

Indicating the estimation result of CSI for each RB.

In a seventh mode, when the indication information is a preset granularity parameter, the step of obtaining a precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

here, the pre-coding frequency domain granularity parameter is obtained as K according to the preset granularity parameter.

Specifically, when the indication information is a preset granularity parameter, the step of the terminal obtaining the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

the base station implementation mode is as follows: and the base station configures the state of the CSI-RS according to the appointed frequency domain granularity parameter, wherein the state comprises the binding state and the binding granularity K of the CSI-RS.

wherein RB_i(1. ltoreq. i. ltoreq.M) represents the ith non-precoded RB,

The terminal implementation mode is as follows: the terminal configures the state of the CSI-RS according to the appointed frequency domain granularity parameter, wherein the state comprises the binding state and the binding granularity K of the CSI-RS, and the terminal always estimates the CSI according to the appointment in the communication process.

wherein

Indicating the estimation result of CSI for each RB.

Further, the method further comprises: the terminal obtains the binding state of the CSI-RS through a high-level frequency domain granularity parameter configuration signaling or a physical layer frequency domain granularity parameter signaling, wherein the binding state comprises the following steps: bound or unbound.

EXAMPLE III

In this embodiment, a further method for configuring channel parameters is provided, and fig. 3 is a flowchart of another method for configuring channel parameters according to an embodiment of the present invention, as shown in fig. 3, at a base station side, the flowchart includes the following steps:

step S302, the base station configures indication information;

and step S304, the base station configures the pre-coding time domain granularity parameter/measurement limiting parameter of the CSI-RS according to the indication information.

Different from the embodiment corresponding to fig. 1, the method for acquiring channel parameters provided in the embodiment of the present application configures precoding time domain granularity parameters of CSI-RS for a base station according to configured indication information.

Through the steps, at the base station side, configuring the indication information through the base station; the base station configures the pre-coding time domain granularity parameter of the CSI-RS according to the indication information, so that the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Further, the indication information includes at least one of: precoding matrix indicator non-PMI disabling signaling indication, feedback mode configuration signaling indication, feedback type Class indication information, channel state reference signal configuration CSI-RS configuration indication information, feedback mode indication information, antenna port number indication information and CSI report type.

Further, the step of configuring, by the base station, the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS according to the indication information includes:

in a first mode, when the indication information is a PMI disabling signaling indication, the step of configuring a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

judging whether PMI disabling signaling indication is enabled; if the judgment result is yes, configuring a pre-coding time domain granularity parameter K as X; under the condition that the judgment result is negative, configuring a pre-coding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

specifically, when the indication information is a PMI disabling signaling indication, the step of configuring the precoding time domain granularity parameter of the CSI-RS by the base station includes:

When the binding granularity is K, the binding method of the base station to the CSI-RS is as follows: the base station binds the CSI-RSs on the continuous K subframes from the current subframe, namely the CSI-RSs contained in the pilot frequency configuration of the same set of CSI-RSs on the continuous K subframes have the same precoding or do not have precoding. Fig. 3-a depicts the configuration state at a binding granularity of K-2.

In a second mode, when the indication information is a feedback mode configuration signaling indication, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

here, a feedback mode in the feedback mode configuration signaling indication is detected; when the feedback mode is a first type of preset mode set, configuring a precoding time domain granularity parameter K as X; when the feedback mode is a second type preset mode set or a third type preset mode set, configuring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

specifically, when the indication information is a feedback mode configuration signaling indication, the step of configuring, by the base station, a precoding time domain granularity parameter of the CSI-RS includes:

and the base station configures the state of the CSI-RS through the feedback mode configuration signaling, wherein the state comprises the binding state and the binding granularity K of the CSI-RS. The base station configures a feedback mode to be X-0, agrees to indicate the binding granularity K to be X, and agrees to indicate the binding granularity K to be Y when the feedback mode is a mode of X-1 or X-2, wherein X and Y are different integers and satisfy X < Y.

In a third mode, when the indication information is feedback Class indication information, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the channel state reference signal CSI-RS includes:

here, a feedback category Class in the feedback category Class indication information is detected; when the feedback category Class is a second feedback category, configuring a precoding time domain granularity parameter K as X; when the feedback category Class is a first feedback category, configuring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y;

specifically, when the indication information is feedback Class indication information, the step of configuring the precoding time domain granularity parameter of the channel state reference signal CSI-RS by the base station includes:

and the base station indicates the state of the configuration CSI-RS through a feedback category (Class), wherein the state comprises the binding state and the binding granularity K of the CSI-RS. When the feedback type configured by the base station is Class B, the indication binding granularity K is agreed to be X, when the feedback type is Class A, the indication binding granularity K is agreed to be Y, X and Y are different integers, and X is satisfied to be Y.

In a fourth mode, when the indication information configures CSI-RS configuration indication information for the CSI-RS, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

the base station configures a set of CSI-RS configuration, wherein the CSI-RS configuration comprises a plurality of resource sets, one beam corresponds to one resource set, the beams corresponding to different resource sets are different, the resource sets comprise a plurality of ports, and the ports have the same precoding; after the base station determines CSI-RS configuration, configuring a pre-coding frequency domain granularity parameter as K through a high-level signaling/physical layer signaling indication;

specifically, when the indication information configures CSI-RS configuration indication information for the CSI-RS, the step of configuring, by the base station, the precoding time domain granularity parameter of the CSI-RS includes:

the base station determines CSI-RS configuration, including the number of CSI resource sets, the number of ports contained in each CSI resource set, and precoding matrixes adopted by the ports. The base station indicates the value of the binding granularity K through high layer/physical layer signaling.

In a fifth mode, when the indication information is feedback mode indication information, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

here, a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, configuring a precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y;

specifically, when the indication information is feedback mode indication information, the step of configuring the precoding time domain granularity parameter of the channel state reference signal CSI-RS by the base station includes:

and the base station indicates the state of the configured CSI-RS in a feedback mode, wherein the state comprises the binding state and the binding granularity K of the CSI-RS. When the feedback mode configured by the base station is periodic feedback, the binding granularity K is appointed to be indicated as X, when the feedback mode is aperiodic feedback, the binding granularity K is appointed to be indicated as Y, X and Y are different integers, and X < Y is satisfied.

In a sixth mode, when the indication information is antenna port number indication information, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

here, when the number of antenna ports used by the base station for transmission is M1, a precoding time domain granularity parameter K is configured to be X; when the number of antenna ports used for transmission by the base station is M2, configuring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X is greater than or equal to Y when M1 is less than or equal to M2.

Specifically, when the indication information is antenna port number indication information, the step of configuring the precoding time domain granularity parameter of the channel state reference signal CSI-RS by the base station includes:

and the base station indicates the state of the configuration CSI-RS through the number of the antenna ports, including the binding state and the binding granularity K of the CSI-RS. When the number of antenna ports used for transmission by the base station is M1, it is agreed that the indicated bundling granularity K is X, and when the number of antenna ports used for transmission is M2, it is agreed that the indicated bundling granularity K is Y, and X and Y are different integers. Further, when M1< ═ M2, X > ═ Y.

In a seventh aspect, when the indication information is a CSI report type, the step of configuring a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS includes:

and according to the periodic resetting of the time domain granularity parameter along with the periodic feedback of the CSI report type, the base station configures the resetting period and/or the subframe offset of the binding state according to the longest period of the CSI report type.

Specifically, the base station implementation manner is as follows: the base station determines the CSI reporting type, including the reporting period and/or subframe offset of the CQI/RI/PMI, and then resets the binding state and/or subframe offset of the CSI-RS according to the longest period. As shown in fig. 5-a, feedback periods of CQI/PMI/RI are different, but the feedback period of RI is the largest, and the binding state of CSI-RS is reset in the feedback period of RI.

In addition, at the base station side, the state of the CSI-RS may also be configured in a first and third joint manners, that is, the state of the CSI-RS is configured in a state table jointly determined by pmia partitioning signaling and feedback category, which is specifically shown as follows:

the base station configures the state of the CSI-RS according to a state table jointly determined by PMI disabling signaling and feedback categories as shown in the following table 2:

table 2 PMI disabling signaling and feedback type joint state table, as shown in table 2.

TABLE 2

	Feedback class A (class A)	Feedback class B (class B)
			PMI disabling enabled	K_0,A	K_0,B
PMI disabling	K_1,A	K_1,B

The four parameters in table 2 satisfy the constraints: k_0,A,K_0,B,K_1,A,K_1,BAre all integers and are not less than 1K_0,A≤K_0,B≤K_1,A≤K_1,BM is less than or equal to M, wherein M is the number of RBs in the bandwidth.

wherein RB_i(1. ltoreq. i. ltoreq.M) represents the ith non-precoded RB,

Example four

In this embodiment, a further method for acquiring channel parameters is provided, and fig. 4 is a flowchart of another method for acquiring channel parameters according to an embodiment of the present invention, as shown in fig. 4, at a terminal side, the flowchart includes the following steps:

step S402, the terminal receives the indication information sent by the base station;

and S404, the terminal acquires a pre-coding time domain granularity parameter/measurement limiting parameter of the CSI-RS according to the indication information.

Different from the method for acquiring the precoding frequency domain granularity parameter of the CSI-RS by the terminal in fig. 2, the method for acquiring the channel parameter provided in the embodiment of the present application receives the indication information by the terminal, and further acquires the precoding time domain granularity parameter of the CSI-RS according to the indication information.

Through the steps, the terminal receives the indication information sent by the base station; the terminal acquires the pre-coding time domain granularity parameter of the CSI-RS according to the indication information, so that the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Further, the indication information includes at least one of: precoding matrix indicator non-PMI disabling signaling indication, feedback mode configuration signaling indication, feedback type Class indication information, Resource specific indication information, feedback mode indication information, antenna port number indication information and CSI report type.

Further, the step that the terminal obtains the pre-coding time domain granularity parameter/the measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information comprises the following steps:

in a first mode, when the indication information is a PMI disabling signaling indication, the step of obtaining a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

judging whether PMI disabling signaling indication is enabled; if the judgment result is yes, acquiring a precoding time domain granularity parameter K as X; under the condition that the judgment result is negative, acquiring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

specifically, when the indication information is a PMI disabling signaling indication, the step of the terminal acquiring a precoding time domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

After determining the binding granularity K, the terminal estimates the CSI by: the terminal determines the position of a CSI-RS corresponding to the current CSI quantization, the reference resource corresponding to the CSI quantization is generally located in a subframe where the CSI-RS which is sent for the last time and needs to be subjected to quantization feedback is located, and the terminal performs joint CSI estimation on the subframe where the CSI-RS is located and CSI-RSs sent in K previous CSI-RS sending subframes. Fig. 4-a is a schematic diagram of CSI joint estimation after the terminal determines that the CSI-RS configuration state is K-2.

In a second mode, when the indication information is a feedback mode configuration signaling indication, the step of obtaining a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

here, detecting a feedback mode in the feedback mode acquisition signaling indication; when the feedback mode is a first type of preset mode set, acquiring a precoding time domain granularity parameter K as X; when the feedback mode is a second type preset mode set or a third type preset mode set, acquiring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

specifically, when the indication information is a feedback mode configuration signaling indication, the step of the terminal obtaining the precoding time domain granularity parameter of the channel state reference signal CSI-RS includes:

In a third mode, when the indication information is feedback Class indication information, the step of obtaining the precoding time domain granularity parameter/measurement limiting parameter of the channel state reference signal CSI-RS includes:

here, a feedback category Class in the feedback category Class indication information is detected; when the feedback category Class is a second feedback category, acquiring a precoding time domain granularity parameter K as X; when the feedback category Class is a first feedback category, acquiring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

specifically, when the indication information is feedback Class indication information, the step of the terminal acquiring the precoding time domain granularity parameter of the channel state reference signal CSI-RS includes:

and the terminal receives the feedback class (class) indication information and determines the binding state and the binding granularity K of the CSI-RS through the feedback class (class) indication information.

In a fourth mode, when the indication information is Resource specific indication information, the step of obtaining a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS comprises:

the terminal determines the Resource set number contained in a set of CSI-RSconfiguration configured by the base station according to the Resource specific indication information; the terminal acquires a precoding time domain granularity parameter K of a channel state reference signal CSI-RS according to the received high-layer/physical layer indication signaling;

specifically, when the indication information is Resource specific indication information, the step of obtaining the precoding time domain granularity parameter of the CSI-RS includes:

the terminal determines the number of resource sets contained in a set of CSI-RS configuration configured by the base station from the received data. And the terminal receives the indication signaling of the high layer/physical layer to obtain the CSI-RS binding granularity K value, and then the terminal performs joint CSI estimation by using the resources in the bound resource set.

In a fifth mode, when the indication information is feedback mode indication information, the step of obtaining the precoding time domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

here, a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, acquiring a precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, acquiring a precoding time domain granularity parameter K as Y; wherein X < Y;

specifically, when the indication information is feedback mode indication information, the step of the terminal obtaining the precoding time domain granularity parameter of the channel state reference signal CSI-RS includes:

In a sixth mode, when the indication information is antenna port number indication information, the step of obtaining a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

here, when the terminal determines that the number of antenna ports used by the base station for transmission is M1, acquiring a precoding time domain granularity parameter K as X; when the terminal determines that the number of antenna ports used for transmission by the base station is M2, acquiring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X is greater than or equal to Y when M1 is less than or equal to M2.

Specifically, when the indication information is antenna port number indication information, the step of the terminal acquiring the precoding time domain granularity parameter of the channel state reference signal CSI-RS includes:

the terminal determines the number of antenna ports for transmission from the received data, and determines the binding state and the binding granularity K of the CSI-RS through the indication information of the number of the antenna ports.

In a seventh mode, when the indication information is a CSI report type, the step of obtaining a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS includes:

and the terminal determines the periodical resetting of the binding state of the CSI-RS and/or the subframe offset of the binding state through the longest period of the CSI report type.

Specifically, the terminal implementation manner is as follows: and the terminal acquires the CSI report type including the feedback period of CQI/RI/PMI. And determining the longest feedback period through the feedback period of the CQI/RI/PMI, and obtaining the binding state and/or subframe offset of the CSI-RS according to the longest feedback period. And after the terminal acquires the binding state of the CSI-RS, performing joint estimation on the CSI according to the binding state of the CSI-RS.

Through 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 software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may 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 instructions for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

In this embodiment, a device for acquiring channel parameters is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not repeated for what has been described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

In addition, at the terminal side, the state of the CSI-RS may also be configured in a first and third joint manners, that is, the terminal receives the disabling signaling and the feedback type indication information, and determines the state of the CSI-RS, including the binding state and the binding granularity K of the CSI-RS, through a state table jointly determined by the disabling signaling and the feedback type in table 2 in the third embodiment. The details are as follows:

wherein

Indicating the estimation result of CSI for each RB.

EXAMPLE five

Fig. 5 is a block diagram of a configuration apparatus of channel parameters according to an embodiment of the present invention, as shown in fig. 5, the apparatus includes, at a base station side: a first configuration module 51 and a second configuration module 52, wherein,

a first configuration module 51, configured to configure indication information;

and a second configuration module 52, configured to configure a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS according to the indication information.

The first configuration module 51 and the second configuration module 52 correspond here to the steps S102 and S104 in the implementation of fig. 1.

According to the device for acquiring the channel parameters, indication information is configured through a base station at the base station side; the base station configures the pre-coding frequency domain granularity parameter of the CSI-RS according to the indication information, so that the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Further, fig. 6 is a block diagram of a configuration apparatus of channel parameters according to an embodiment of the present invention, and as shown in fig. 6, the indication information includes at least one of the following information: under the conditions of high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabling PMI disabling signaling indication, feedback mode configuration signaling indication, feedback category Class indication information, category Type indication information of a channel state reference signal CSI-RS, and feedback mode indication information, the second configuration module 52 includes: a first configuration unit 521, a second configuration unit 522, a third configuration unit 523, a fourth configuration unit 524, a fifth configuration unit 525 and a sixth configuration unit 526, wherein,

a first configuration unit 521, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is an indication of a high-level frequency domain granularity parameter configuration signaling or a physical layer frequency domain granularity parameter signaling, where the precoding frequency domain granularity parameter is configured to be K according to the indication of the high-level frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling, the precoding frequency domain granularity parameter K is 1, and the K is equal to M, where M is a radio bearer RB number with a largest current bandwidth; alternatively, the first and second electrodes may be,

a second configuring unit 522, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is a PMI disablement signaling indication, where whether the PMI disablement signaling indication is enabled is determined; if the judgment result is yes, configuring a pre-coding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, configuring a pre-coding frequency domain granularity parameter K as Y; alternatively, the first and second electrodes may be,

a third configuring unit 523, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is a feedback mode configuration signaling indication; detecting a feedback mode in a feedback mode configuration signaling instruction; when the feedback mode is a first type of preset mode set, configuring a pre-coding frequency domain granularity parameter K as X; when the feedback mode is a second-type preset mode set or a third-type preset mode set, configuring a precoding frequency domain granularity parameter K as Y; alternatively, the first and second electrodes may be,

a fourth configuration unit 524, configured to configure a precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS when the indication information is feedback Class indication information, where a feedback Class in the feedback Class indication information is detected; when the feedback type Class is a second feedback type, configuring a pre-coding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, configuring a pre-coding frequency domain granularity parameter K as Y; alternatively, the first and second electrodes may be,

a fifth configuration unit 525, configured to configure, when the indication information is Type indication information of a CSI-RS, a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS, where a Type in the Type indication information of the CSI-RS is detected; when the Type is a first Type, configuring a pre-coding frequency domain granularity parameter K as X; when the Type is a second Type, configuring a pre-coding frequency domain granularity parameter K as Y; alternatively, the first and second electrodes may be,

a sixth configuring unit 526, configured to configure a precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS when the indication information is feedback mode indication information, where a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, configuring a precoding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring a pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

EXAMPLE six

Fig. 7 is a block diagram of a configuration of an apparatus for acquiring channel parameters according to another embodiment of the present invention, as shown in fig. 7, the apparatus includes, at a terminal side: a receiving module 72 and an obtaining module 74, wherein,

a receiving module 72, configured to receive indication information sent by a base station;

and an obtaining module 74, configured to obtain a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS according to the indication information.

Here, the receiving module 72 and the obtaining module 74 in the embodiment of the present application correspond to step S202 and step S204 in fig. 2.

The device for acquiring the channel parameters provided by the embodiment of the application receives the indication information sent by the base station through the terminal at the terminal side; the terminal acquires the pre-coding frequency domain granularity parameter of the CSI-RS according to the indication information, so that the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Further, fig. 8 is a block diagram of a structure of an apparatus for acquiring channel parameters according to another embodiment of the present invention, as shown in fig. 8, where the indication information includes at least one of the following information: under the conditions of high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabling PMI disabling signaling indication, feedback mode configuration signaling indication, feedback category Class indication information, category Type indication information of a channel state reference signal CSI-RS, feedback mode indication information, and a preset granularity parameter, the obtaining module 74 includes: a first acquiring unit 741, a second acquiring unit 742, a third acquiring unit 743, a fourth acquiring unit 744, a fifth acquiring unit 745, a sixth acquiring unit 746, and a seventh acquiring unit 747, wherein,

a first obtaining unit 741, configured to obtain a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is an indication of a high-level frequency domain granularity parameter configuration signaling or a physical layer frequency domain granularity parameter signaling, where the precoding frequency domain granularity parameter is K, the precoding frequency domain granularity parameter K is 1, and the K is equal to M according to the indication of the high-level frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling, where M is a radio bearer RB number with a largest current bandwidth; alternatively, the first and second electrodes may be,

a second obtaining unit 742, configured to obtain a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is a PMI disablement signaling indication, where it is determined whether the PMI disablement signaling indication is enabled; if the judgment result is yes, acquiring a precoding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, acquiring a pre-coding frequency domain granularity parameter K as Y; alternatively, the first and second electrodes may be,

a third obtaining unit 743, configured to obtain a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is a feedback mode configuration signaling indication, where a feedback mode in the feedback mode configuration signaling indication is detected; when the feedback mode is a first type of preset mode set, acquiring a pre-coding frequency domain granularity parameter K as X; when the feedback mode is a second-type preset mode set or a third-type preset mode set, acquiring a precoding frequency domain granularity parameter K as Y; alternatively, the first and second electrodes may be,

a fourth obtaining unit 744, configured to obtain a precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS when the indication information is feedback Class indication information, where a feedback Class in the feedback Class indication information is detected; when the feedback type Class is a second feedback type, acquiring a precoding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, acquiring a precoding frequency domain granularity parameter K as Y; alternatively, the first and second electrodes may be,

a fifth obtaining unit 745, configured to obtain a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is Type indication information of the CSI-RS, where the Type in the Type indication information of the CSI-RS is detected; when the Type is a first Type, acquiring a pre-coding frequency domain granularity parameter K as X; when the Type is a second Type, acquiring a pre-coding frequency domain granularity parameter K as Y; alternatively, the first and second electrodes may be,

a sixth obtaining unit 746, configured to obtain a precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS when the indication information is feedback mode indication information, where a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, acquiring a precoding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, acquiring a precoding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; alternatively, the first and second electrodes may be,

a seventh obtaining unit 747, configured to obtain the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS when the indication information is the preset granularity parameter, where the precoding frequency domain granularity parameter obtained according to the preset granularity parameter is K.

EXAMPLE seven

A channel parameter configuration apparatus according to another embodiment of the present invention, on a base station side, includes: a first configuration module and a second configuration module, wherein,

the first configuration module is used for configuring indication information;

and the second configuration module is used for configuring the pre-coding time domain granularity parameter/measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information.

According to the device for acquiring the channel parameters, indication information is configured through a base station at the base station side; the base station configures the pre-coding time domain granularity parameter of the CSI-RS according to the indication information, so that the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Further, the indication information includes at least one of the following: in the case of the precoding matrix indicator non-enabling pmidibrating signaling indication, the feedback mode configuration signaling indication, the feedback Class indication information, the CSI-RS configuration indication information of the channel state reference signal configuration, the feedback mode indication information, the antenna port number indication information, and the CSI report type, the configuration module 94 includes: a first configuration unit, a second configuration unit, a third configuration unit, a fourth configuration unit, a fifth configuration unit, and a sixth configuration unit, wherein,

a first configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is a PMI disablement signaling indication, where whether the PMI disablement signaling indication is enabled is determined; if the judgment result is yes, configuring a pre-coding time domain granularity parameter K as X; under the condition that the judgment result is negative, configuring a pre-coding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; alternatively, the first and second electrodes may be,

the second configuration unit is used for configuring a precoding time domain granularity parameter/measurement limiting parameter of the CSI-RS when the indication information is a feedback mode configuration signaling indication, wherein a feedback mode in the feedback mode configuration signaling indication is detected; when the feedback mode is a first type of preset mode set, configuring a precoding time domain granularity parameter K as X; when the feedback mode is a second type preset mode set or a third type preset mode set, configuring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; alternatively, the first and second electrodes may be,

a third configuration unit, configured to configure a precoding time domain granularity parameter/a measurement restriction parameter of a channel state reference signal CSI-RS when the indication information is feedback Class indication information, wherein a feedback Class in the feedback Class indication information is detected; when the feedback category Class is a second feedback category, configuring a precoding time domain granularity parameter K as X; when the feedback category Class is a first feedback category, configuring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; alternatively, the first and second electrodes may be,

a fourth configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information configures CSI-RS configuration indication information for the CSI-RS, where a set of CSI-RS configurations is configured, where a CSI-RS configuration includes a plurality of resource sets, one beam corresponds to one resource set, different beams correspond to different resource sets, the resource sets include a plurality of ports, and the ports have the same precoding; after the base station determines CSI-RS configuration, configuring a pre-coding frequency domain granularity parameter as K through a high-level signaling/physical layer signaling indication; alternatively, the first and second electrodes may be,

a fifth configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is feedback mode indication information, wherein a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, configuring a precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; alternatively, the first and second electrodes may be,

a sixth configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of a channel state reference signal CSI-RS when the indication information is antenna port number indication information, where, when the number of antenna ports used by the base station for transmission is M1, configure a precoding time domain granularity parameter K as X; when the number of antenna ports used for transmission by the base station is M2, configuring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and when M1 is less than or equal to M2, X is greater than or equal to Y;

and a seventh configuration unit, configured to configure, when the indication information is a CSI report type, a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS, where a reset period and/or a subframe offset of the bonding state is configured through a longest period of the CSI report type according to that the time domain granularity parameter is periodically reset along with periodic feedback of the CSI report type.

Example eight

In an apparatus for acquiring a channel parameter according to another embodiment of the present invention, at a terminal, the apparatus includes: a receiving module and an obtaining module, wherein,

the receiving module is used for receiving the indication information sent by the base station;

and the acquisition module is used for acquiring the pre-coding time domain granularity parameter/measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information.

The device for acquiring the channel parameters provided by the embodiment of the application receives the indication information sent by the base station through the terminal at the terminal side; the terminal acquires the pre-coding time domain granularity parameter of the CSI-RS according to the indication information, so that the problem that the best estimation performance cannot be obtained due to noise influence caused by a conservative method for CSI estimation is solved, and the effect of improving the estimation performance is achieved.

Further, the indication information includes at least one of the following: under the condition of a precoding matrix indicator non-enabled PMIdecoupling signaling indication, a feedback mode configuration signaling indication, feedback type Class indication information, resource scheduling indication information, feedback mode indication information, antenna port number indication information and a CSI report type, the obtaining module comprises:

a first obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is a PMI disablinking signaling indication, where whether the PMI disablinking signaling indication is enabled is determined; if the judgment result is yes, acquiring a precoding time domain granularity parameter K as X; under the condition that the judgment result is negative, acquiring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; alternatively, the first and second electrodes may be,

the second obtaining unit is used for obtaining a precoding time domain granularity parameter/measurement limiting parameter of a channel state reference signal (CSI-RS) when the indication information is a feedback mode configuration signaling indication, wherein the feedback mode in the signaling indication is obtained by detecting the feedback mode; when the feedback mode is a first type of preset mode set, acquiring a precoding time domain granularity parameter K as X; when the feedback mode is a second type preset mode set or a third type preset mode set, acquiring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; alternatively, the first and second electrodes may be,

a third obtaining unit, configured to obtain a precoding time domain granularity parameter/a measurement limiting parameter of a CSI-RS when the indication information is feedback Class indication information, where a feedback Class in the feedback Class indication information is detected; when the feedback category Class is a second feedback category, acquiring a precoding time domain granularity parameter K as X; when the feedback category Class is a first feedback category, acquiring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; alternatively, the first and second electrodes may be,

a fourth obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is Resource specific indication information, where the terminal determines, according to the Resource specific indication information, a Resource set number included in a set of CSI-RS configurations configured by the base station; the terminal acquires a precoding time domain granularity parameter K of a channel state reference signal CSI-RS according to the received high-layer/physical layer indication signaling; alternatively, the first and second electrodes may be,

a fifth obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is feedback mode indication information, where a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, acquiring a precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, acquiring a precoding time domain granularity parameter K as Y; wherein X < Y; alternatively, the first and second electrodes may be,

a sixth obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a channel state reference signal CSI-RS when the indication information is antenna port number indication information, where when the terminal determines that the number of antenna ports used by the base station for transmission is M1, the obtained precoding time domain granularity parameter K is X; when the terminal determines that the number of antenna ports used for transmission by the base station is M2, acquiring a precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and when M1 is less than or equal to M2, X is greater than or equal to Y;

and a seventh obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is a CSI report type, where a periodic reset of a binding state of the CSI-RS and/or a subframe offset of the binding state are determined by a longest period of the CSI report type.

Example nine

In this embodiment, a system for acquiring configuration of channel parameters is provided, and fig. 9 is a structural diagram of a system for acquiring channel parameters according to an embodiment of the present invention, as shown in fig. 9, the system includes: base station 92 and terminal 94, base station 92 being communicatively coupled to terminal 94, wherein,

the base station 92 is a device for configuring channel parameters according to any one of the fifth embodiment or the seventh embodiment;

the terminal 94 is the apparatus for acquiring a channel parameter according to any one of the sixth embodiment and the eighth embodiment.

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in a plurality of processors.

The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:

s1, the base station receives the indication information;

s2, the base station configures the pre-coding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS according to the indication information.

Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Optionally, in this embodiment, the step of the processor executing, according to the program code stored in the storage medium, that the base station configures the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS according to the indication information includes: in a first mode, when the indication information is an indication of a high-layer frequency domain granularity parameter configuration signaling or a physical layer frequency domain granularity parameter signaling, the step of configuring a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: configuring a pre-coding frequency domain granularity parameter as K according to a high-layer frequency domain granularity parameter configuration signaling or a physical layer frequency domain granularity parameter signaling instruction, wherein the pre-coding frequency domain granularity parameter K is 1, and K is equal to M, wherein M is the number of radio bearer RBs with the largest current bandwidth; in a second mode, when the indication information is pmia misalignment signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: judging whether PMI disabling signaling indication is enabled; if the judgment result is yes, configuring a pre-coding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, configuring a pre-coding frequency domain granularity parameter K as Y; in a third mode, when the indication information is a feedback mode configuration signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in a feedback mode configuration signaling indication; when the feedback mode is a first type of preset mode set, configuring a pre-coding frequency domain granularity parameter K as X; when the feedback mode is a second-type preset mode set or a third-type preset mode set, configuring a precoding frequency domain granularity parameter K as Y; in a fourth mode, when the indication information is feedback Class indication information, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback type Class in the feedback type Class indication information; when the feedback type Class is a second feedback type, configuring a pre-coding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, configuring a pre-coding frequency domain granularity parameter K as Y; in a fifth mode, when the indication information is Type indication information of a channel state reference signal CSI-RS, the step of configuring a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS includes: detecting a Type in Type indication information of a channel state reference signal CSI-RS; when the Type is a first Type, configuring a pre-coding frequency domain granularity parameter K as X; when the Type is a second Type, configuring a pre-coding frequency domain granularity parameter K as Y; in a sixth mode, when the indication information is feedback mode indication information, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes: detecting a feedback mode in the feedback mode indication information; when the feedback mode is periodic feedback, configuring a precoding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring a pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for configuring channel parameters, comprising:

base station configuration indication information;

the base station configures a pre-coding frequency domain granularity parameter/a measurement limiting parameter of a channel state reference signal (CSI-RS) according to the indication information;

wherein the indication information comprises at least one of: high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabling PMI disabling signaling indication, feedback mode configuration signaling indication, feedback Type Class indication information, Type indication information of the channel state reference signal CSI-RS and feedback mode indication information;

the step of configuring the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS by the base station according to the indication information comprises the following steps:

in a second mode, when the indication information is the PMI disabling signaling indication, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

judging whether the PMI disabling signaling indication is enabled;

if the judgment result is yes, configuring the pre-coding frequency domain granularity parameter K as X;

under the condition that the judgment result is negative, configuring the pre-coding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

in a fourth mode, when the indication information is the feedback Class indication information, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

detecting a feedback type Class in the feedback type Class indication information;

when the feedback type Class is a second feedback type, configuring the precoding frequency domain granularity parameter K as X;

when the feedback type Class is a first feedback type, configuring the precoding frequency domain granularity parameter K as Y;

wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y;

in a fifth mode, when the indication information is Type indication information of the CSI-RS, the step of configuring a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS includes:

detecting the Type in the Type indication information of the CSI-RS;

when the Type is a first Type, configuring the precoding frequency domain granularity parameter K as X;

when the Type is a second Type, configuring the precoding frequency domain granularity parameter K as Y;

a sixth mode, when the indication information is the feedback mode indication information, the step of configuring the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

detecting a feedback mode in the feedback mode indication information;

when the feedback mode is periodic feedback, configuring the pre-coding frequency domain granularity parameter K as X;

when the feedback mode is aperiodic feedback, configuring the pre-coding frequency domain granularity parameter K as Y;

wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

2. The method of claim 1, wherein the pre-coding frequency domain granularity parameter K is determined according to the current bandwidth.

3. The method of claim 1, wherein a Type in the Type indication information of the CSI-RS comprises at least one of: the CSI-RS comprises a periodic CSI-RS, an aperiodic CSI-RS, a precoded CSI-RS, a non-precoded CSI-RS, a full-bandwidth CSI-RS, a partial-bandwidth CSI-RS, an aggregated configured CSI-RS and a non-aggregated configured CSI-RS.

4. The method of claim 1, wherein the precoding frequency domain granularity parameter comprises: a CSI-RS bundling state and/or a CSI-RS bundling granularity.

5. The method of claim 4, further comprising: the base station indicates a binding state for configuring the CSI-RS through the high-layer frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling, wherein the binding state comprises: bound or unbound.

6. A method for acquiring channel parameters is characterized by comprising the following steps:

a terminal receives indication information sent by a base station;

the terminal acquires a pre-coding frequency domain granularity parameter/a measurement limiting parameter of a channel state reference signal (CSI-RS) according to the indication information;

wherein the indication information comprises at least one of: high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabling PMI disabling signaling indication, feedback mode configuration signaling indication, feedback Type Class indication information, Type indication information of the CSI-RS, feedback mode indication information and preset granularity parameters;

the step that the terminal acquires the pre-coding frequency domain granularity parameter/the measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information comprises the following steps:

in a second mode, when the indication information is the PMI disabling signaling indication, the step of obtaining the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

judging whether the PMI disabling signaling indication is enabled;

if the judgment result is yes, acquiring the pre-coding frequency domain granularity parameter K as X;

under the condition that the judgment result is negative, acquiring the pre-coding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

in a fourth mode, when the indication information is the feedback Class indication information, the step of obtaining the precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS includes:

when the feedback type Class is a second feedback type, acquiring the precoding frequency domain granularity parameter K as X;

when the feedback type Class is a first feedback type, acquiring the precoding frequency domain granularity parameter K as Y;

in a fifth mode, when the indication information is Type indication information of the CSI-RS, the step of obtaining a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS includes:

detecting the Type in the Type indication information of the CSI-RS;

when the Type is a first Type, acquiring the pre-coding frequency domain granularity parameter K as X;

when the Type is a second Type, acquiring the pre-coding frequency domain granularity parameter K as Y;

in a sixth mode, when the indication information is the feedback mode indication information, the step of obtaining the precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

detecting a feedback mode in the feedback mode indication information;

when the feedback mode is periodic feedback, acquiring the precoding frequency domain granularity parameter K as X;

when the feedback mode is aperiodic feedback, acquiring the pre-coding frequency domain granularity parameter K as Y;

7. The method of claim 6, wherein the pre-coding frequency domain granularity parameter K is determined according to the current bandwidth.

8. The method of claim 6, wherein a Type in the Type indication information of the CSI-RS comprises at least one of: the CSI-RS comprises a periodic CSI-RS, an aperiodic CSI-RS, a precoded CSI-RS, a non-precoded CSI-RS, a full-bandwidth CSI-RS, a partial-bandwidth CSI-RS, an aggregated configured CSI-RS and a non-aggregated configured CSI-RS.

9. The method of claim 6, wherein the precoding frequency domain granularity parameter comprises: a CSI-RS bundling state and/or a CSI-RS bundling granularity.

10. The method of claim 9, further comprising: the terminal obtains the binding state of the CSI-RS through the indication of the high-layer frequency domain granularity parameter configuration signaling or the physical layer frequency domain granularity parameter signaling, wherein the binding state comprises the following steps: bound or unbound.

11. A method for configuring channel parameters, comprising:

base station configuration indication information;

the base station configures a pre-coding time domain granularity parameter/a measurement limiting parameter of a channel state reference signal (CSI-RS) according to the indication information;

wherein the indication information comprises at least one of: precoding matrix indicator non-enabling PMI disabling signaling indication, feedback mode configuration signaling indication, feedback type Class indication information, channel state reference signal configuration CSI-RS configuration indication information, feedback mode indication information, antenna port number indication information and CSI report type;

the step of configuring the precoding time domain granularity parameter/measurement limiting parameter of the CSI-RS by the base station according to the indication information comprises the following steps:

in a first mode, when the indication information is the PMI disabling signaling indication, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

judging whether the PMI disabling signaling indication is enabled;

if the judgment result is yes, configuring the pre-coding time domain granularity parameter K as X;

under the condition that the judgment result is negative, configuring the pre-coding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

in a third mode, when the indication information is the feedback Class indication information, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

when the feedback type Class is a second feedback type, configuring the precoding time domain granularity parameter K as X;

when the feedback type Class is a first feedback type, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y;

in a fourth mode, when the indication information configures CSI-RS configuration indication information for the CSI-RS, the step of configuring a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

the base station configures a set of CSI-RS configuration, wherein the CSI-RS configuration comprises a plurality of resource sets, one beam corresponds to one resource set, the different corresponding beams of the resource sets are different, the resource sets comprise a plurality of ports, and the ports have the same precoding;

after the base station determines CSI-RS configuration, configuring the precoding time domain granularity parameter to be K through a high-level signaling/physical layer signaling indication;

in a fifth mode, when the indication information is the feedback mode indication information, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

detecting a feedback mode in the feedback mode indication information;

when the feedback mode is periodic feedback, configuring the precoding time domain granularity parameter K as X;

when the feedback mode is aperiodic feedback, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y;

in a sixth mode, when the indication information is the antenna port number indication information, the step of configuring the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

when the number of the antenna ports used for transmission by the base station is M₁Then, configuring the pre-coding time domain granularity parameter K as X;

when the number of the antenna ports used for transmission by the base station is M₂Then, configuring the pre-coding time domain granularity parameter K as Y;

wherein X is not equal to Y, X and Y are integers, when M is₁Less than or equal to M₂When X is greater than or equal to Y;

and according to the periodic resetting of the time domain granularity parameter along with the periodic feedback of the CSI report type, the base station configures the reset period and/or the subframe offset of the binding state according to the longest period of the CSI report type.

12. The method of claim 11, wherein the pre-coding temporal granularity parameter comprises: a CSI-RS bundling state and/or a CSI-RS bundling granularity.

13. A method for acquiring channel parameters is characterized by comprising the following steps:

a terminal receives indication information sent by a base station;

the terminal acquires a pre-coding time domain granularity parameter/a measurement limiting parameter of a channel state reference signal (CSI-RS) according to the indication information;

wherein the indication information comprises at least one of: precoding matrix indicator non-enabling PMI disabling signaling indication, feedback mode configuration signaling indication, feedback type Class indication information, Resource specific indication information, feedback mode indication information, antenna port number indication information and CSI report type;

the step that the terminal obtains the pre-coding time domain granularity parameter/measurement limiting parameter of the channel state reference signal CSI-RS according to the indication information comprises the following steps:

in a first mode, when the indication information is the PMI disabling signaling indication, the step of obtaining the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

judging whether the PMI disabling signaling indication is enabled;

if the judgment result is yes, acquiring the precoding time domain granularity parameter K as X;

under the condition that the judgment result is negative, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

in a third mode, when the indication information is the feedback Class indication information, the step of obtaining the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

when the feedback type Class is a second feedback type, acquiring the precoding time domain granularity parameter K as X;

when the feedback type Class is a first feedback type, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y;

in a fourth mode, when the indication information is the Resource specific indication information, the step of obtaining the precoding time domain granularity parameter/the measurement restriction parameter of the CSI-RS includes:

the terminal determines the Resource set number contained in a set of CSI-RSconfiguration configured by the base station according to the Resource specific indication information;

the terminal acquires a precoding time domain granularity parameter of a channel state reference signal (CSI-RS) as K according to the received high-layer/physical layer indication signaling;

in a fifth mode, when the indication information is the feedback mode indication information, the step of obtaining the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

detecting a feedback mode in the feedback mode indication information;

when the feedback mode is periodic feedback, acquiring the precoding time domain granularity parameter K as X;

when the feedback mode is aperiodic feedback, acquiring the precoding time domain granularity parameter K as Y;

wherein X < Y;

in a sixth mode, when the indication information is the antenna port number indication information, the step of obtaining the precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS includes:

when the terminal determines that the number of antenna ports used for transmission by the base station is M₁Then, acquiring the pre-coding time domain granularity parameter K as X;

when the terminal determines that the number of antenna ports used for transmission by the base station is M₂Then, acquiring the pre-coding time domain granularity parameter K as Y;

wherein X is not equal to Y, X and Y are integers, when M is₁Less than or equal to M₂When the temperature of the water is higher than the set temperature,x is greater than or equal to Y;

in a seventh aspect, when the indication information is a CSI report type, the step of obtaining a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS includes:

and the terminal determines the periodical resetting of the binding state of the CSI-RS and/or the subframe offset of the binding state according to the longest period of the report type of the CSI.

14. The method of claim 13, wherein the pre-coding temporal granularity parameter comprises: a CSI-RS bundling state and/or a CSI-RS bundling granularity.

15. An apparatus for configuring channel parameters, comprising:

the first configuration module is used for configuring indication information;

a second configuration module, configured to configure a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS according to the indication information;

wherein, the indication information comprises at least one of the following: under the conditions of high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabling PMI disabling signaling indication, feedback mode configuration signaling indication, feedback category Class indication information, category Type indication information of the CSI-RS, and feedback mode indication information, the second configuration module includes:

a second configuration unit, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the PMI disablement signaling indication, wherein it is determined whether the PMI disablement signaling indication is enabled; if the judgment result is yes, configuring the pre-coding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, configuring the precoding frequency domain granularity parameter K as Y, wherein X is not equal to Y, X and Y are integers, and X is less than Y; alternatively, the first and second electrodes may be,

a fourth configuration unit, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the feedback Class indication information, wherein a feedback Class in the feedback Class indication information is detected; when the feedback type Class is a second feedback type, configuring the precoding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, configuring the precoding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; alternatively, the first and second electrodes may be,

a fifth configuration unit, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is Type indication information of the CSI-RS, where a Type in the Type indication information of the CSI-RS is detected; when the Type is a first Type, configuring the precoding frequency domain granularity parameter K as X; when the Type is a second Type, configuring the precoding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; alternatively, the first and second electrodes may be,

a sixth configuration unit, configured to configure a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the feedback mode indication information, wherein a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, configuring the precoding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring the pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

16. An apparatus for obtaining channel parameters, comprising:

the acquisition module is used for acquiring a pre-coding frequency domain granularity parameter/a measurement limiting parameter of a channel state reference signal (CSI-RS) according to the indication information;

wherein, the indication information comprises at least one of the following: under the conditions of high-layer frequency domain granularity parameter configuration signaling, physical layer frequency domain granularity parameter signaling indication, precoding matrix indicator non-enabling PMI disabling signaling indication, feedback mode configuration signaling indication, feedback category Class indication information, category Type indication information of the channel state reference signal CSI-RS, feedback mode indication information, and a preset granularity parameter, the acquiring module comprises:

a second obtaining unit, configured to obtain a precoding frequency domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the PMI disabling signaling indication, where whether the PMI disabling signaling indication is enabled is determined; if the judgment result is yes, acquiring the pre-coding frequency domain granularity parameter K as X; under the condition that the judgment result is negative, acquiring the precoding frequency domain granularity parameter K as Y, wherein X is not equal to Y, X and Y are integers, and X is less than Y; alternatively, the first and second electrodes may be,

a fourth obtaining unit, configured to obtain a precoding frequency domain granularity parameter/a measurement limiting parameter of the CSI-RS when the indication information is the feedback Class indication information, where a feedback Class in the feedback Class indication information is detected; when the feedback type Class is a second feedback type, acquiring the precoding frequency domain granularity parameter K as X; when the feedback type Class is a first feedback type, acquiring the precoding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; alternatively, the first and second electrodes may be,

a fifth obtaining unit, configured to obtain a precoding frequency domain granularity parameter/a measurement restriction parameter of the CSI-RS when the indication information is Type indication information of the CSI-RS, where a Type in the Type indication information of the CSI-RS is detected; when the Type is a first Type, acquiring the pre-coding frequency domain granularity parameter K as X; when the Type is a second Type, acquiring the pre-coding frequency domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; alternatively, the first and second electrodes may be,

a sixth obtaining unit, configured to obtain a precoding frequency domain granularity parameter/measurement limiting parameter of the CSI-RS when the indication information is the feedback mode indication information, where a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, acquiring the precoding frequency domain granularity parameter K as X; when the feedback mode is aperiodic feedback, acquiring the pre-coding frequency domain granularity parameter K as Y; wherein, X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y.

17. An apparatus for configuring channel parameters, comprising:

the first configuration module is used for configuring indication information;

the second configuration module is used for configuring a precoding time domain granularity parameter/a measurement limiting parameter of the CSI-RS according to the indication information;

wherein, the indication information comprises at least one of the following: the second configuration module, when a precoding matrix indicator non-enabling PMI disabling signaling indication, a feedback mode configuration signaling indication, feedback category Class indication information, channel state reference signal configuration CSI-RS configuration indication information, feedback mode indication information, antenna port number indication information, and a CSI report type are present, includes:

a first configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the PMI disabling signaling indication, wherein it is determined whether the PMI disabling signaling indication is enabled; if the judgment result is yes, configuring the pre-coding time domain granularity parameter K as X; under the condition that the judgment result is negative, configuring the pre-coding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; alternatively, the first and second electrodes may be,

a third configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the feedback Class indication information, wherein a feedback Class in the feedback Class indication information is detected; when the feedback type Class is a second feedback type, configuring the precoding time domain granularity parameter K as X; when the feedback type Class is a first feedback type, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; alternatively, the first and second electrodes may be,

a fourth configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information configures CSI-RS configuration indication information for the CSI-RS, where a set of CSI-RS configurations is configured, where a CSI-RS configuration includes multiple resource sets, one beam corresponds to one resource set, the resource sets correspond to different beams, the resource sets include multiple ports, and the ports have the same precoding; after CSI-RS configuration is determined, configuring the pre-coding time domain granularity parameter to be K through a high-level signaling/physical layer signaling indication; alternatively, the first and second electrodes may be,

a fifth configuration unit, configured to configure a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the feedback mode indication information, wherein a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, configuring the precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, configuring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, X is greater than or equal to 1, Y is less than or equal to M, M is the current maximum radio bearer RB number, and X < Y; alternatively, the first and second electrodes may be,

a sixth configuration unit, configured to receive the indication informationConfiguring a precoding time domain granularity parameter/measurement limiting parameter of a channel state reference signal (CSI-RS) when the antenna port number indication information is received, wherein the number of antenna ports used for transmission by the base station is M₁Then, configuring the pre-coding time domain granularity parameter K as X; when the number of the antenna ports used for transmission by the base station is M₂Then, configuring the pre-coding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, when M is₁Less than or equal to M₂When X is greater than or equal to Y;

a seventh configuration unit, configured to configure a precoding time domain granularity parameter/measurement limit of a CSI-RS when the indication information is a CSI report type, where a reset period and/or a subframe offset of a binding state is configured through a longest period of the CSI report type according to a periodic reset of the time domain granularity parameter along with a periodic feedback of the CSI report type.

18. An apparatus for obtaining channel parameters, comprising:

the acquisition module is used for acquiring a precoding time domain granularity parameter/a measurement limiting parameter of a channel state reference signal (CSI-RS) according to the indication information;

wherein, the indication information comprises at least one of the following: under the conditions of a precoding matrix indicator non-enabling PMI disabling signaling indication, a feedback mode configuration signaling indication, feedback type Class indication information, Resource specific indication information, feedback mode indication information, antenna port number indication information, and a CSI report type, the acquiring module comprises:

a first obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of the CSI-RS when the indication information is the PMI disabling signaling indication, where whether the PMI disabling signaling indication is enabled is determined; if the judgment result is yes, acquiring the precoding time domain granularity parameter K as X; under the condition that the judgment result is negative, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; alternatively, the first and second electrodes may be,

a third obtaining unit, configured to obtain a precoding time domain granularity parameter/a measurement restriction parameter of a CSI-RS when the indication information is the feedback Class indication information, where a feedback Class in the feedback Class indication information is detected; when the feedback type Class is a second feedback type, acquiring the precoding time domain granularity parameter K as X; when the feedback type Class is a first feedback type, acquiring the precoding time domain granularity parameter K as Y; wherein X is not equal to Y, X and Y are integers, and X < Y; alternatively, the first and second electrodes may be,

a fourth obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the Resource specific indication information, where a Resource set number included in a set of CSI-RS configurations configured by a base station is determined according to the Resource specific indication information; acquiring a precoding time domain granularity parameter K of a channel state reference signal CSI-RS according to a received high-layer/physical layer indication signaling; alternatively, the first and second electrodes may be,

a fifth obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the feedback mode indication information, where a feedback mode in the feedback mode indication information is detected; when the feedback mode is periodic feedback, acquiring the precoding time domain granularity parameter K as X; when the feedback mode is aperiodic feedback, acquiring the precoding time domain granularity parameter K as Y; wherein X < Y; alternatively, the first and second electrodes may be,

a sixth obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is the antenna port number indication information, where when the terminal determines that the number of antenna ports used by the base station for transmission is M₁Then, acquiring the pre-coding time domain granularity parameter K as X; when the terminal determines that the number of antenna ports used for transmission by the base station is M₂Then, the pre-stage is acquiredThe encoding time domain granularity parameter K is Y; wherein X is not equal to Y, X and Y are integers, when M is₁Less than or equal to M₂When X is greater than or equal to Y;

a seventh obtaining unit, configured to obtain a precoding time domain granularity parameter/measurement restriction parameter of a CSI-RS when the indication information is a CSI report type, where a periodic reset of a binding state of the CSI-RS and/or a subframe offset of the binding state are determined by a longest period of the CSI report type.

19. A system for obtaining channel parameter configuration, comprising: a base station and a terminal, the base station being communicatively coupled to the terminal, wherein,

the base station is the channel parameter acquiring device of claim 15;

the terminal is the channel parameter acquiring device of claim 16;

or, the base station is the apparatus for acquiring channel parameters according to claim 17;

the terminal is the apparatus for acquiring channel parameters according to claim 18.