CN109150411B - Channel state information reporting method and device and user equipment - Google Patents
Channel state information reporting method and device and user equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0606—Space-frequency coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
- H04L1/0058—Block-coded modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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Abstract
The invention provides a channel state information reporting method, a channel state information reporting device and user equipment. The method comprises the following steps: acquiring measurement configuration information issued by a network side; determining a transmission scheme for calculating channel state information according to the measurement configuration information; according to the determined transmission scheme for calculating the channel state information, calculating codebook part information and channel quality indication information which need to be reported; and reporting the channel state information according to the calculated codebook part information and the channel quality indication information. The invention can obtain the transmission scheme hypothesis and report the channel state information in the NR system.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for reporting channel state information, and a user equipment.
Background
In an LTE (Long Term Evolution) system, a UE (User Equipment) calculates and reports CSI (Channel State Information) under certain transmission scheme assumption. Wherein, the UE obtains the transmission scheme assumption according to the network explicit configuration information, and the LTE protocol is also explicitly described for different transmission schemes. That is, the number of transmission schemes explicitly described by the protocol can be considered to be the same as the number of transmission schemes that the network can actually support. Therefore, the UE can perform CSI calculation and reporting based on the transmission scheme indication configured by the network display and the explicit transmission scheme. For example, when the network configures the transmission scheme to assume open loop/semi-open loop transmission, the UE does not need to report the codebook because the protocol is described in the codebook used in this transmission scheme.
In the NR (New Radio, New air interface) system, for a unicast PDSCH (Physical Downlink Shared Channel), the protocol will not explicitly describe an open/semi-open-loop (open/semi-open-loop) transmission scheme, but the network may actually use the open/semi-open-loop transmission scheme for transmission; and the protocol has been explicitly shown to describe a closed loop (closed loop) transmission scheme. That is, the number of transmission schemes explicitly described by the protocol is less than the number of transmission schemes that the network can actually support. For example, when the transmission scheme adopted by the network is semi-open loop transmission, the UE needs codebook reporting because the codebook adopted by the semi-open loop transmission scheme is not explicitly described in the protocol.
Therefore, in the NR system, how to obtain the transmission scheme assumption from the Measurement configuration information (Measurement setting) and how to report the transmission scheme assumption is an urgent problem to be solved when the UE performs the channel state information calculation and reporting.
Disclosure of Invention
The method, the device and the user equipment for reporting the channel state information can acquire the transmission scheme hypothesis in an NR system and report the channel state information.
In a first aspect, the present invention provides a method for reporting channel state information, which is applied to a user equipment, and the method includes:
acquiring measurement configuration information issued by a network side;
determining a transmission scheme for calculating channel state information according to the measurement configuration information;
according to the determined transmission scheme for calculating the channel state information, calculating codebook part information and channel quality indication information which need to be reported;
and reporting the channel state information according to the calculated codebook part information and the channel quality indication information.
Optionally, the determining, according to the measurement configuration information, a transmission scheme for calculating channel state information includes: and when acquiring that only part of codebook information needs to be reported from the measurement configuration information, determining that the transmission scheme for calculating the channel state information is a semi-open-loop transmission scheme, or else, determining that the transmission scheme for calculating the channel state information is a closed-loop transmission scheme.
Optionally, when the transmission scheme for calculating the channel state information is determined to be a semi-open loop transmission scheme, the method further includes: and determining the semi-open loop transmission scheme to be space-frequency block coding or precoding circulation according to at least one of channel state information reference signal port configuration, configuration of reported codebook part information content and rank number.
Optionally, the determining that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of channel state information reference signal port configuration, configuration of reported codebook part information content and rank number includes: determining that the semi-open loop transmission scheme is space-frequency block coding when the rank number is equal to 1; when the rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
Optionally, the determining that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of channel state information reference signal port configuration, configuration of reported codebook part information content and rank number includes: when the reported codebook information is inter-panel common phase information and/or broadband amplitude information, determining that the semi-open loop transmission scheme is space-frequency block coding; and when the reported codebook information contains wideband codebook information, determining the semi-open loop transmission scheme as a precoding cycle.
Optionally, the determining that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of channel state information reference signal port configuration, configuration of reported codebook part information content and rank number includes: when the channel state information reference signal port is a 2-port, determining that the semi-open loop transmission scheme is space frequency block coding; otherwise, determining the semi-open loop transmission scheme as a precoding cycle.
Optionally, the determining that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of channel state information reference signal port configuration, configuration of reported codebook part information content and rank number includes: when the number of the channel state information reference signal ports is greater than 2, if the channel rank number is 1, determining that the semi-open loop transmission scheme is space-frequency block coding; and if the channel rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
Optionally, when it is determined that the semi-open loop transmission scheme is a precoding loop, the calculating codebook part information and channel quality indication information to be reported according to the determined transmission scheme for calculating channel state information includes: and determining codebook part information to be reported as wideband information, circulating the sub-bands based on all possible wideband information, selecting the optimal wideband information to be reported, and calculating the corresponding channel quality indication.
In a second aspect, the present invention provides a device for reporting channel state information, where the device is located in a user equipment, and the device includes:
the acquisition unit is used for acquiring measurement configuration information issued by a network side;
a determining unit, configured to determine a transmission scheme for calculating channel state information according to the measurement configuration information;
a calculating unit, configured to calculate codebook part information and channel quality indication information to be reported according to the transmission scheme for calculating channel state information determined by the determining unit;
and the reporting unit is used for reporting the channel state information according to the codebook part information and the channel quality indication information calculated by the calculating unit.
Optionally, the determining unit is configured to determine that a transmission scheme used for calculating the channel state information is a semi-open-loop transmission scheme when it is known from the measurement configuration information that only codebook partial information needs to be reported, and otherwise determine that the transmission scheme used for calculating the channel state information is a closed-loop transmission scheme.
Optionally, when the determining unit determines that the transmission scheme for calculating the channel state information is a semi-open-loop transmission scheme, the determining unit is further configured to determine that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of a channel state information reference signal port configuration, a configuration of reported codebook part information content, and a rank number.
Optionally, the determining unit is further configured to determine that the semi-open-loop transmission scheme is space-frequency block coding when the rank number is equal to 1; when the rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
Optionally, the determining unit is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding when the reported codebook information is inter-panel common-phase information and/or wideband amplitude information; and when the reported codebook information contains wideband codebook information, determining the semi-open loop transmission scheme as a precoding cycle.
Optionally, the determining unit is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding when a channel state information reference signal port is a 2-port; otherwise, determining the semi-open loop transmission scheme as a precoding cycle.
Optionally, the determining unit is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding if a channel rank number is 1 when the number of channel state information reference signal ports is greater than 2; and if the channel rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
Optionally, when the determining unit determines that the semi-open-loop transmission scheme is a precoding cycle, the calculating unit is configured to determine that codebook part information to be reported is wideband information, and cycle a sub-band based on all possible wideband information, select the optimal wideband information to report, and perform corresponding channel quality indication calculation.
In a third aspect, the present invention provides a ue, where the ue includes the above apparatus for reporting channel state information.
According to the method, the device and the user equipment for reporting the channel state information, a transmission scheme for calculating the channel state information is determined according to the acquired measurement configuration information issued by the network side, codebook part information and channel quality indication information which need to be reported are calculated according to the determined transmission scheme for calculating the channel state information, and the channel state information is reported according to the calculated codebook part information and the channel quality indication information. Compared with the prior art, the method and the device can acquire the transmission scheme hypothesis according to the measurement configuration information and report the channel state information.
Drawings
Fig. 1 is a flowchart of a method for reporting channel state information according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for reporting channel state information according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a method for reporting channel state information, which is applied to a user equipment, and as shown in fig. 1, the method includes:
and S11, acquiring Measurement configuration (Measurement Setting) information issued by the network side.
S12, determining the transmission scheme for calculating the channel state information according to the measurement configuration information.
Specifically, when the UE knows from the measurement configuration information that the UE needs to report only part of the codebook information, the UE considers that the assumption configured by the network for calculating the CSI is a semi-open loop transmission scheme; otherwise, the UE considers the assumption of the network configuration for calculating CSI to be a closed-loop transmission scheme.
The codebook is used for CSI reporting; the codebook section information includes, but is not limited to, wideband information (W1) information in a two-stage codebook, partial wideband information (W1) in a two-stage codebook, Inter-panel co-phasing (Inter-panel co-phasing) information, wideband amplitude (amplitude) information.
S13, according to the determined transmission scheme for calculating the channel state information, calculating the codebook part information and the channel quality indication information which need to be reported.
Specifically, if the UE considers that the assumption for CSI configured by the network is a semi-open loop transmission scheme, the UE calculates, based on the semi-open loop transmission scheme, codebook partial information and CQI (Channel Quality Indicator) information that are reported.
The semi-open loop transmission scheme adopted for calculating codebook partial Information, CQI Information and the like includes SFBC (Space Frequency Block Code) and precoding Cycling, and specifically, SFBC or precoding Cycling is used in association with at least one of CSI-RS (Channel State Information Reference Signal) port configuration, configuration of reported codebook partial Information content and Rank (Rank).
Alternatively, the semi-open loop transmission scheme may be determined to be SFBC or Precoder Cycling only according to the rank number:
determining that the semi-open loop transmission scheme is space-frequency block coding when the rank number is equal to 1; when the rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
Optionally, it may be determined that the semi-open loop transmission scheme is SFBC or Precoder Cycling only according to the reported codebook information:
if the reported codebook information is inter-panel common phase information and/or broadband amplitude information, determining that a semi-open loop transmission scheme is SFBC; and if the reported codebook information contains W1 information, determining that the semi-open loop transmission scheme is precoding Cycling.
Optionally, it may be determined that the semi-open loop transmission scheme is SFBC or Precoder Cycling only according to the CSI-RS port configuration:
if the CSI-RS port is a 2 port, determining that the semi-open loop transmission scheme is SFBC; and if the CSI-RS port is other ports, determining that the semi-open loop transmission scheme is precoding Cycling.
Optionally, the semi-open-loop transmission scheme may be determined to be SFBC or Precoder Cycling according to the CSI-RS port configuration and the channel rank number:
when the number of the channel state information reference signal ports is greater than 2, if the channel rank number is 1, determining that the semi-open loop transmission scheme is space-frequency block coding; and if the channel rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
And S14, reporting the channel state information according to the calculated codebook part information and the channel quality indication information.
The method for reporting channel state information provided in the embodiments of the present invention determines a transmission scheme for calculating channel state information according to the acquired measurement configuration information delivered by the network side, calculates codebook part information and channel quality indication information to be reported according to the determined transmission scheme for calculating channel state information, and reports channel state information according to the calculated codebook part information and channel quality indication information. Compared with the prior art, the method and the device can acquire the transmission scheme hypothesis according to the measurement configuration information and report the channel state information.
The following describes the method for reporting channel state information according to the embodiment of the present invention in detail by using a specific embodiment.
Under Type I single panel, taking Table 7.2.4-10 codebook in LTE 36.213 as an example, as shown in Table 1:
TABLE 1
When the UE knows from the measurement configuration information that only the W1 information of the codebook needs to be reported, the UE considers that the transmission scheme of the network configuration is assumed to be a semi-open loop transmission scheme; and determining that the transmission scheme for calculating the W1 and the CQI is precoding Cycling according to the configuration of the current CSI-RS port, the configuration of the reported codebook part information content and the rank number.
At this time, UE reports wideband information i of codebook1(i1,1,i1,2) Without reporting i2Information; when the UE is calculating CQI, it will base on all possible i1And order i2According to i2The loop is performed in the sequence 0 → 1 → 2 → 3, or in other sequences, the optimal i is selected1Reporting and carrying out corresponding CQI calculation. For the network side, it is not necessary to know the specific i2The cycle type.
Alternatively, the UE may determine the half-open loop transmission scheme for calculating W1 and CQI according to only the rank number.
For example, the UE may determine a transmission scheme for calculating W1 and CQI according to the rank number in the manner shown in table 2.
TABLE 2
| Rank number | Transmission scheme for calculating W1 and CQI |
| Rank＝1 | SFBC |
| Rank>1 | Precoder Cycling |
An embodiment of the present invention further provides a device for reporting channel state information, where the device is located in a user equipment, and as shown in fig. 2, the device includes:
an obtaining unit 11, configured to obtain measurement configuration information sent by a network side;
a determining unit 12, configured to determine a transmission scheme for calculating channel state information according to the measurement configuration information;
a calculating unit 13, configured to calculate codebook part information and channel quality indication information to be reported according to the transmission scheme for calculating channel state information determined by the determining unit 12;
a reporting unit 14, configured to report the channel state information according to the codebook part information and the channel quality indication information calculated by the calculating unit 13.
The device for reporting channel state information provided in the embodiments of the present invention determines a transmission scheme for calculating channel state information according to the acquired measurement configuration information delivered from the network side, calculates codebook part information and channel quality indication information to be reported according to the determined transmission scheme for calculating channel state information, and reports channel state information according to the calculated codebook part information and channel quality indication information. Compared with the prior art, the method and the device can acquire the transmission scheme hypothesis according to the measurement configuration information and report the channel state information.
Optionally, the determining unit 12 is configured to determine that the transmission scheme used for calculating the channel state information is a semi-open-loop transmission scheme when it is known from the measurement configuration information that only codebook partial information needs to be reported, and otherwise determine that the transmission scheme used for calculating the channel state information is a closed-loop transmission scheme.
Optionally, when the determining unit 12 determines that the transmission scheme for calculating the channel state information is a semi-open-loop transmission scheme, the determining unit 12 is further configured to determine that the semi-open-loop transmission scheme is a space-frequency block coding or a precoding cycle according to at least one of a channel state information reference signal port configuration, a configuration of information content of a reported codebook part, and a rank number.
Optionally, the determining unit 12 is further configured to determine that the semi-open-loop transmission scheme is space-frequency block coding when the rank number is equal to 1; when the rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
Optionally, the determining unit 12 is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding when the reported codebook information is inter-panel common-phase information and/or wideband amplitude information; and when the reported codebook information contains wideband codebook information, determining the semi-open loop transmission scheme as a precoding cycle.
Optionally, the determining unit 12 is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding when a channel state information reference signal port is a 2-port; otherwise, determining the semi-open loop transmission scheme as a precoding cycle.
Optionally, the determining unit 12 is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding if a channel rank number is 1 when the number of channel state information reference signal ports is greater than 2; and if the channel rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
Optionally, when the determining unit 12 determines that the semi-open-loop transmission scheme is a precoding cycle, the calculating unit 13 is configured to determine that codebook part information to be reported is wideband information, and cycle a sub-band based on all possible wideband information, select optimal wideband information to report, and perform corresponding channel quality indication calculation.
The apparatus of this embodiment may be configured to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
The embodiment of the invention also provides the user equipment which comprises the channel state information reporting device.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (15)
1. A method for reporting channel state information is applied to user equipment, and is characterized in that the method comprises the following steps:
acquiring measurement configuration information issued by a network side;
determining a transmission scheme for calculating channel state information according to the measurement configuration information, specifically: when acquiring that only partial codebook information needs to be reported from the measurement configuration information, determining that a transmission scheme for calculating channel state information is a semi-open-loop transmission scheme, otherwise determining that the transmission scheme for calculating the channel state information is a closed-loop transmission scheme, wherein the codebook is a codebook for reporting CSI, and the partial codebook information comprises wideband information in a two-stage codebook, partial wideband information in the two-stage codebook, and inter-panel common phase or wideband amplitude information;
according to the determined transmission scheme for calculating the channel state information, calculating codebook part information and channel quality indication information which need to be reported;
and reporting the channel state information according to the calculated codebook part information and the channel quality indication information.
2. The method of claim 1, wherein when the transmission scheme for calculating the channel state information is determined to be a semi-open loop transmission scheme, the method further comprises: and determining the semi-open loop transmission scheme to be space-frequency block coding or precoding circulation according to at least one of channel state information reference signal port configuration, configuration of reported codebook part information content and rank number.
3. The method of claim 2, wherein the determining that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of a channel state information reference signal port configuration, a configuration of reported codebook section information content, and a rank index comprises: determining that the semi-open loop transmission scheme is space-frequency block coding when the rank number is equal to 1; when the rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
4. The method of claim 2, wherein the determining that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of a channel state information reference signal port configuration, a configuration of reported codebook section information content, and a rank index comprises: when the reported codebook information is inter-panel common phase information and/or broadband amplitude information, determining that the semi-open loop transmission scheme is space-frequency block coding; and when the reported codebook information contains wideband codebook information, determining the semi-open loop transmission scheme as a precoding cycle.
5. The method of claim 2, wherein the determining that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of a channel state information reference signal port configuration, a configuration of reported codebook section information content, and a rank index comprises: when the channel state information reference signal port is a 2-port, determining that the semi-open loop transmission scheme is space frequency block coding; otherwise, determining the semi-open loop transmission scheme as a precoding cycle.
6. The method of claim 2, wherein the determining that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of a channel state information reference signal port configuration, a configuration of reported codebook section information content, and a rank index comprises: when the number of the channel state information reference signal ports is greater than 2, if the channel rank number is 1, determining that the semi-open loop transmission scheme is space-frequency block coding; and if the channel rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
7. The method according to any of claims 2 to 6, wherein when determining that the semi-open loop transmission scheme is a precoding cycle, the calculating codebook part information and channel quality indicator information to be reported according to the determined transmission scheme for calculating channel state information comprises: and determining codebook part information to be reported as wideband information, circulating the sub-bands based on all possible wideband information, selecting the optimal wideband information to be reported, and calculating the corresponding channel quality indication.
8. A device for reporting channel state information, located in a user equipment, the device comprising:
the acquisition unit is used for acquiring measurement configuration information issued by a network side;
a determining unit, configured to determine, according to the measurement configuration information, a transmission scheme for calculating channel state information, specifically: when acquiring that only partial codebook information needs to be reported from the measurement configuration information, determining that a transmission scheme for calculating channel state information is a semi-open-loop transmission scheme, otherwise determining that the transmission scheme for calculating the channel state information is a closed-loop transmission scheme, wherein the codebook is a codebook for reporting CSI, and the partial codebook information comprises wideband information in a two-stage codebook, partial wideband information in the two-stage codebook, and inter-panel common phase or wideband amplitude information;
a calculating unit, configured to calculate codebook part information and channel quality indication information to be reported according to the transmission scheme for calculating channel state information determined by the determining unit;
and the reporting unit is used for reporting the channel state information according to the codebook part information and the channel quality indication information calculated by the calculating unit.
9. The apparatus of claim 8, wherein when the determining unit determines that the transmission scheme for calculating the channel state information is a semi-open-loop transmission scheme, the determining unit is further configured to determine that the semi-open-loop transmission scheme is space-frequency block coding or precoding cycling according to at least one of a channel state information reference signal port configuration, a configuration of reported codebook part information content, and a rank number.
10. The apparatus of claim 9, wherein the determining unit is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding when the rank number is equal to 1; when the rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
11. The apparatus of claim 9, wherein the determining unit is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding when the reported codebook information is inter-panel co-phase information and/or wideband amplitude information; and when the reported codebook information contains wideband codebook information, determining the semi-open loop transmission scheme as a precoding cycle.
12. The apparatus of claim 9, wherein the determining unit is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding when a channel state information reference signal port is 2-port; otherwise, determining the semi-open loop transmission scheme as a precoding cycle.
13. The apparatus of claim 9, wherein the determining unit is further configured to determine that the semi-open loop transmission scheme is space-frequency block coding if a channel rank number is 1 when a number of channel state information reference signal ports is greater than 2; and if the channel rank number is greater than 1, determining that the semi-open loop transmission scheme is a precoding cycle.
14. The apparatus according to any one of claims 9 to 13, wherein when the determining unit determines that the semi-open-loop transmission scheme is a precoding cycle, the calculating unit is configured to determine that codebook part information to be reported is wideband information, and based on all possible wideband information and cycles subbands, select an optimal wideband information to report and perform corresponding channel quality indication calculation.
15. A ue, characterized in that the ue comprises the apparatus for reporting csi as claimed in any one of claims 8 to 14.
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