WO2014019203A1

WO2014019203A1 - Channel state information reporting method, user equipment, and base station

Info

Publication number: WO2014019203A1
Application number: PCT/CN2012/079600
Authority: WO
Inventors: 夏亮
Original assignee: 华为技术有限公司
Priority date: 2012-08-02
Filing date: 2012-08-02
Publication date: 2014-02-06
Also published as: CN103828417A

Abstract

Embodiments of the present invention provide a channel state information reporting method, a user equipment, and a base station. The method comprises: receiving a first sub-frame offset and a second sub-frame offset that are notified by a base station; determining a reporting sub-frame of a broadband CQI or a broadband PMI according to the first sub-frame offset, and determining a reporting sub-frame of a sub-band CQI according to the second sub-frame offset. In the embodiments of the present invention, different sub-frame offsets are configured for the broadband CQI/PMI and the sub-band CQI, so that CSI reporting can be implemented more flexibly.

Description

Method for reporting channel state information, user equipment and base station

Embodiments of the present invention relate to the field of wireless communications, and more specifically, to a reporting method of channel state information, a user equipment, and a base station. Background technique

In a conventional wireless communication system, each user equipment (User Equipment, UE) generally only receives data and signaling information transmitted from one cell, where each cell corresponds to one transmission point having a transceiver, and one transmission with a transceiver. The point may correspond to one or more antennas, where each cell may also correspond to a component carrier (CC), and one component carrier may correspond to one carrier frequency. Those skilled in the art will readily appreciate that the "cell" or "cell corresponding transmission point" or "cell corresponding member carrier" hereinafter means the same meaning.

With the advancement of technology, a coordinated multi-point (CoMP) technology is proposed, in which multiple cells can simultaneously serve the same UE. Taking a scenario in which two cells serve the same UE as an example, it is assumed that cell 1 corresponds to transmission point 1, cell 2 corresponds to transmission point 2, and transmission point 1 and transmission point 2 can simultaneously transmit signals to the UE, which can improve UE reception. The quality of the signal, thereby improving transmission efficiency. It should be noted that "multiple cells serving the same UE at the same time" is not limited to "sending a signal to the UE at the same time", but should include all ways of improving the quality of the signal received by the UE by cooperation of multiple cells. For example, it also includes Coordinated Beamforming (CBF). For a scenario in which two cells serve the same UE at the same time, for example, only the transmission point 1 transmits a signal to the UE, and after the transmission point 2 cooperates with the transmission point 1, the signal is transmitted using a beam with less interference to the UE. , can also improve the quality of the signal received by the UE.

The above transmission points may include an access point (AP), a remote wireless device (Remote

Radio Equipment (RRE), Remote Radio Head (RRH), Remote Radio Unit (RRU), Pico cells, Femto cell or Home eNodeB (HeNB).

In order to enable the cell to perform reasonable scheduling, the cell needs to know the channel state information (CSI) of the wireless channel between the cell and the UE. The CSI is often measured by a reference signal (RS) sent by the UE to the cell, and the measurement result is fed back. Obtained for the community. In a CoMP system, in order to enable reasonable cooperation between multiple cells, the cell responsible for scheduling needs to know the CSI of the radio channel between multiple cells and the UE, where the CSI includes a Rank Indicator (RI), Precoding matrix indicator (PMI), channel quality indicator (CQI) and other information.

In the 3GPP LTE Rel-10 specification, the UE may feed back the CSI to the base station by periodically reporting the PUCCH (Physical Uplink Control Channel). There are four ways to report periodically, and the reported PMI and CQI contents of each method are shown in the following table.

In addition to PMI and CQI, RI can also be reported in each periodic reporting mode. Whether the reported RI is jointly determined according to the transmission mode and the reporting mode. For example, in modes 1-0 and 2-0, the RI is reported only in the case of the transmission mode 3, otherwise the RI is not reported, in the modes 1-1 and 2- In 1, the RI must be reported.

Specific examples are as follows: Mode 1-0 requires feedback RI, wideband CQI; Mode 2-0 requires feedback RI, wideband CQI, subband CQI; Mode 1-1 requires feedback RI, wideband CQI and PMI; Mode 2-1 requires feedback RI, wideband CQI and PMI, subband CQI.

In the 3GPP LTE Rel-10 specification, for modes 2-0 and 2-1, that is, when wideband CQI/PMI and subband CQI need to be reported, the reporting of wideband CQI/PMI and subband CQI can only occur when the following formula is satisfied. On the subframe of (1):

(10 X + \ n _s 12" - N _{0 T CQ1} )moAN _pd = Q ( 1 )

Where / ^ is the radio frame number, which is the slot number (where each two slots form one subframe), N _0F is the CQI reporting subframe offset, and N _pd is the CQI reporting period. N _0F and N _pd are configured by the base station to the UE through high layer signaling. Mod is the modulo operation and L" is the rounding operation.

In the subframe satisfying the formula (1), the subframe satisfying the formula (2) is used to report the wideband CQI/PMI: (10 X

0 (2)

Where Η is determined by a combination of pre-defined parameters and parameters of the high-level signaling configuration. In the subframe satisfying the formula (1), the subframe that does not satisfy the formula (2) is used to report the subband CQI.

The reporting of RI can only occur on subframes that satisfy the following formula (3):

N _{0FFSET CQ1} - N _{0FFSET RI} ) mod(H

· N _pd - M _RI ) = 0 (3)

Where ^ is the subframe offset of the RI reporting relative to the CQI, and the RI reporting period is the M _Si times of the wideband CQI/PMI reporting period. Where N. _FFSCT , _W and ^ are configured by the base station to the UE through higher layer signaling. The value of N ₀ ranges from {0, -1, ..., -(Λ^ - 1) }.

In the above manner, when the CSI needs to report the CSIs of the multiple cells, the CSIs of different cells can be configured with different feedback times, so that the CSIs of different cells can be reported in different subframes, so that CSI is discarded, but this will be Brings a large feedback overhead. Alternatively, the same feedback time may be configured for the CSIs of different cells, so that CSIs of different cells can be in the same subframe, and multiple CSIs that need to be reported simultaneously are transmitted by using PUCCH format 3 (format 3), but this will be reduced. The receiving performance of the base station to the CSI.

Therefore, a more flexible CSI reporting method is needed. Summary of the invention

The embodiments of the present invention provide a method for reporting channel state information, a user equipment, and a base station, which can implement CSI more flexibly.

The first aspect provides a method for reporting channel state information, including: receiving a first subframe offset and a second subframe offset notified by a base station; and determining a wideband channel quality indicator CQI according to the first subframe offset Or the wideband precoding matrix indicates the reporting subframe of the PMI, and determines the reporting subframe of the subband CQI according to the second subframe offset.

With reference to the first aspect, in a first implementation manner of the first aspect, the first subframe offset is the reporting subframe that determines the broadband CQI or the broadband PMI according to the first subframe offset, and includes: Determining the reported subframe of the wideband CQI or the wideband PMI according to the first subframe offset and the second subframe offset.

With reference to the first aspect and the foregoing implementation manner, in a second implementation manner of the first aspect, the determining, by using the first subframe offset and the second subframe offset, the broadband CQI or a broadband PMI The reporting subframe includes: determining that the subframe satisfying (10 x ^ + ^ / 2"-OFFSET, CQI - N ₀ ) mod(H"-N^ ) = 0 is the broadband

The reported subframe of the CQI or wideband PMI, where /^ is the radio frame number, which is the slot number. Is the first subframe offset, N. _fraCT , ^ is the second subframe offset, N is the CQI reporting period; H" is determined jointly by the parameters defined by the predefined parameters and the high layer signaling, or configured by higher layer signaling; mod is the modulo operation, L For rounding down operations.

With reference to the first aspect and the foregoing implementation manner, in a third implementation manner of the first aspect, N _0FFSET , the _{wideband CQ1} ranges from N _0F to −1 , where Ν ₀ is the relative reporting subframe of the rank indication RI. The offset of the reported subframe of the subband CQI.

With reference to the first aspect and the foregoing implementation manner, in a fourth implementation manner of the foregoing aspect, the determining, by the second subframe offset, the reporting sub-frame of the sub-band CQI includes: determining that mod N = 0 is satisfied And not satisfied) mod ( H

The subframe of "· N ) = 0 is the reported subframe of the sub-band CQI, where is the radio frame number, is the slot number, N. _{FFS £} is the second subframe offset, and N _pd is the CQI report. Period; H" is determined jointly by parameters defined by pre-defined parameters and high-level signaling, or by higher layer signaling; mod is modulo operation, and L" is a rounding operation.

With reference to the first aspect and the foregoing implementation manner, in a fifth implementation manner of the first aspect, the method further includes: reporting one of the multiple sub-band CQIs by using the PUCCH format 2; or reporting the multiple sub-bands by using the PUCCH format 3 A maximum of M in the CQI, while using the PUCCH format 3 on the broadband CQI or the wideband PMI.

The second aspect provides a method for reporting channel state information, including: notifying a user equipment of a first subframe offset and a second subframe offset, so that the user equipment determines according to the first subframe offset The wideband channel quality indication CQI or the wideband precoding matrix indicates a reporting subframe of the PMI, and determines a reporting subframe of the subband CQI according to the second subframe offset; receiving the broadband CQI determined by the user equipment or The broadband CQI or the wideband PMI reported in the reported subframe of the broadband PMI, and receiving the subband CQI reported by the user equipment in the determined reporting sub-frame of the sub-band CQI.

With reference to the second aspect, in a first implementation manner of the second aspect, the first subframe offset is the combined second aspect and the foregoing implementation manner, and in the second implementation manner of the second aspect, the first The value of the subframe offset is N _0FFSET , _RI N _pd − where N ₀ is the offset of the reporting subframe of the rank indicating RI relative to the reporting subframe of the subband CQI.

A third aspect provides a user equipment, including: a receiving unit, configured to receive a first subframe offset and a second subframe offset notified by a base station; and a determining unit, configured to receive according to the receiving unit The first subframe offset determines a wideband channel quality indication CQI or a wideband precoding matrix indicating a reporting subframe of the PMI, and determines a reporting subframe of the subband CQI according to the second subframe offset received by the receiving unit.

With reference to the third aspect, in a first implementation manner of the third aspect, the first subframe offset received by the receiving unit is the reporting subframe of the wideband CQI or the wideband PMI, and the reported subframe of the subband CQI Offset. The determining unit is specifically configured to determine, according to the first subframe offset and the second subframe offset, a reported subframe of the wideband CQI or a wideband PMI.

With reference to the third aspect and the foregoing implementation manner, in the second implementation manner of the third aspect, the determining unit is specifically configured to determine that (ΙΟ χ /^ + L" _S / 2"_ N OFFSET, CQI - N ₀ ) The subframe of mod(H"-N^) = 0 is the broadband

The reported sub-frame of CQI or wideband PMI, where / ^ is the radio frame number, which is the slot number.

Λ ^ ^, ϋ is the first subframe offset, N. _fraCT , ^ is the second subframe offset, N is the CQI reporting period; H" is determined jointly by the parameters defined by the predefined parameters and the high layer signaling, or configured by higher layer signaling; mod is the modulo operation, L For rounding down operations.

With reference to the third aspect and the foregoing implementation manner, in a third implementation manner of the third aspect,

N ₀ is in the range ₀ to N Nw - 1, where N ₀ is the rank indication RI report sub-frame with respect to the subband CQI reporting sub-frame offset.

With reference to the third aspect and the foregoing implementation manner, in a fourth implementation manner of the third aspect, the determining unit is specifically configured to determine that (10×x /^ + L" _s / 2"_ N is _satisfied . _FFSCT , _ce Jm.d N = 0 and not satisfied (lO) ^

The subframe is the reported subframe of the subband CQI, where is the radio frame number, and is the slot number, N. _Fra „ is the second subframe offset, N _pd is the CQI reporting period; H is determined by the combination of predefined parameters and high-level signaling configuration parameters; mod is the modulo operation, and L ′ is the rounding operation .

In a fourth aspect, a base station is provided, including: a notification unit, configured to notify a user equipment of a first subframe offset and a second subframe offset, so that the user equipment determines according to the first subframe offset The wideband channel quality indication CQI or the wideband precoding matrix indicates a reporting subframe of the PMI, and determines a reporting subframe of the subband CQI according to the second subframe offset; and the receiving unit is configured to receive the determined by the user equipment The broadband CQI or the wideband PMI reported in the reported subframe of the wideband CQI or the wideband PMI, and receives the subband CQI reported by the user equipment in the determined reporting subband of the subband CQI.

With reference to the fourth aspect, in a first implementation manner of the fourth aspect, the first notified by the notification unit The subframe offset is an offset of the reported subframe of the wideband CQI or wideband PMI with respect to the reported subframe of the subband CQI.

With reference to the fourth aspect and the foregoing implementation manner, in the second implementation manner of the fourth aspect, the first subframe offset notified by the notification unit ranges from ^^ _£ ^ to ^ -1 , where ^^ _£ The fifth aspect provides a method for reporting channel state information, including: receiving a physical uplink control channel PUCCH format for reporting channel state information CSI notified by a base station; reporting the PUCCH format 2 if the PUCCH format is 2 One of the multiple CSIs that need to be reported in the same sub-frame; if the PUCCH format is PUCCH format 3, report up to M of the multiple CSIs that need to be reported in the same sub-frame, where M is a predefined or high-level For signaling configuration, M is an integer greater than 1, wherein the CSI includes at least one of: a rank indication RI, a precoding matrix indication PMI, a wideband channel quality indicator CQI, and a subband CQI.

With reference to the fifth aspect, in the first implementation manner, the M is pre-defined and includes: when the PMI or the RI needs to be reported, the value of the M is 2; when the PMI and the RI are not required to be reported, the value of the M is greater than An integer of 2.

The sixth aspect provides a method for reporting channel state information, including: notifying a user equipment of a physical uplink control channel PUCCH format for reporting channel state information CSI; and if the PUCCH format is PUCCH format 2, receiving the Receiving, by the user equipment, one of the plurality of CSIs that are required to be reported in the same subframe; and if the PUCCH format is the PUCCH format 3, receiving the most M of the plurality of CSIs reported by the user equipment that need to be reported in the same subframe Where M is a predefined or higher layer signaling configuration, M is an integer greater than 1, wherein the CSI includes at least one of: a rank indication RI, a precoding matrix indication PMI, a wideband channel quality indicator CQI, and a subband CQI.

With reference to the sixth aspect, in the first implementation manner, the M is pre-defined and includes: when the PMI or the RI needs to be reported, the value of the M is 2; when the PMI and the RI are not required to be reported, the value of the M is greater than An integer of 2.

The seventh aspect provides a user equipment, including: a receiving unit, configured to receive a physical uplink control channel PUCCH format for reporting channel state information CSI notified by a base station, and a sending unit, configured to: if the receiving unit receives the PUCCH If the format is PUCCH format 2, then one of the multiple CSIs that need to be reported in the same subframe is reported. If the PUCCH format received by the receiving unit is in the PUCCH format 3, the reporting is performed in multiple CSIs that are reported in the same subframe. most M, where M is a predefined or higher layer signaling configuration, and M is an integer greater than 1, wherein the CSI includes at least one of: a rank indication RI, a precoding matrix indication PMI, a wideband channel quality indicator CQI, and a sub With CQI.

With reference to the seventh aspect, in the first implementation, when the PMI or the RI needs to be reported, the value of M is 2; when the PMI and the RI need not be reported, the value of M is an integer greater than 2.

The eighth aspect provides a base station, including: a notification unit, configured to notify a user equipment of a physical uplink control channel PUCCH format for reporting channel state information CSI; and a receiving unit, configured to: if the notification unit notifies the PUCCH format And in the case of the PUCCH format 2, receiving one of the plurality of CSIs that are reported by the user equipment and required to be reported in the same subframe; if the PUCCH format notified by the notification unit is the PUCCH format 3, receiving the need for reporting by the user equipment Up to M of the plurality of CSIs reported in the same subframe, where M is a predefined or higher layer signaling configuration, and M is an integer greater than 1, wherein the CSI includes at least one of the following: a rank indication RI, The precoding matrix indicates PMI, wideband channel quality indicator CQI, and subband CQI.

With reference to the eighth aspect, in the first implementation, when the PMI or the RI needs to be reported, the value of M is 2; when the PMI and the RI need not be reported, the value of M is an integer greater than 2.

In the embodiment of the present invention, different subframe offsets are configured for the wideband CQI/PMI and the subband CQI, and the CSI can be implemented more flexibly. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the 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 flowchart of a method for reporting channel state information according to another embodiment of the present invention.

3 is a block diagram of a user equipment in accordance with an embodiment of the present invention.

4 is a block diagram of a base station in accordance with an embodiment of the present invention.

Figure 5 is a block diagram of a user equipment in accordance with another embodiment of the present invention.

6 is a block diagram of a base station according to another embodiment of the present invention.

FIG. 7 is a flowchart of a method for reporting channel state information according to another embodiment of the present invention.

FIG. 8 is a flowchart of a method for reporting channel state information according to another embodiment of the present invention. 9 is a block diagram of a user equipment according to another embodiment of the present invention.

Figure 10 is a block diagram of a base station in accordance with another embodiment of the present invention.

11 is a block diagram of a user equipment according to another embodiment of the present invention.

Figure 12 is a block diagram of a base station in accordance with another embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

The technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access ( WCDMA, Wideband Code Division Multiple Access Wireless), General Packet Radio Service (GPRS), Long Term Evolution (LTE), etc.

A user equipment (UE, User Equipment), which may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network). The user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle, The wireless access network exchanges languages and/or data.

The base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or a base station (NodeB) in WCDMA, or an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. The invention is not limited.

In the embodiment of the present invention, the subframe offset is an integer.

FIG. 1 is a flowchart of a method for reporting channel state information according to an embodiment of the present invention. The method of Figure 1 is performed by a user equipment.

101. Receive a first subframe offset and a second subframe offset notified by the base station.

For example, the base station may configure the first subframe offset and the second subframe offset by using high layer signaling. The embodiment of the present invention does not limit the manner of specifically notifying the subframe offset. For example, reference may be made to the manner of notifying parameters such as N in the prior art, or may be notified in other manners. 102. Determine, according to the first subframe offset, a reported subframe of the wideband CQI or the wideband PMI, and determine a reported subframe of the subband CQI according to the second subframe offset.

In the embodiment of the present invention, different subframe offsets are configured for the wideband CQI/PMI and the subband CQI, and the CSI can be implemented more flexibly.

Optionally, as an embodiment, the foregoing first subframe offset may be a broadband CQI or a broadband

The offset of the reported subframe of the PMI relative to the reported subframe of the subband CQI. In this case, in step 102, the reporting subframe of the wideband CQI or the wideband PMI may be determined according to the first subframe offset and the second subframe offset.

For example, it may be determined that the subframe satisfying the following formula (4) is a reported subframe of a wideband CQI or a wideband PMI, (10 X n _f + \ n _s 12 J - N _{0FFSET CQ1} - N _{0FFSEr wiiebani CQ1} ) mod (H". N ) = 0 ( 4 ) where is the radio frame number, is the slot number, N. _{F CT} , _wi ^„ _d is the first subframe offset, N. _Fra is the second subframe offset, which is a CQI reporting period. H" is determined jointly by parameters of the predefined parameters and high-level signaling configuration, or by higher layer signaling. Alternatively, as an embodiment, the value of H" may be the same as or passed by H in equation (2) The parameters of the high layer signaling configuration are jointly determined. Mod is the modulo operation and L" is the rounding operation.

On the other hand, it is possible to determine a report subframe that satisfies the following equation (5) and does not satisfy the following equation (6) as a sub-band CQI,

(10 X + L" _s / 2" _ N ₀ ) mod N _pd = 0 ( 5 )

(10 x + L w _s / 2" _ N ₀ ) mod ( H "· N ) = 0 ( 6 )

Where is the radio frame number, which is the slot number, N. _{The FFSCT} is the second subframe offset, which is a CQI reporting period; the value of H" may be the same as the H in the formula (2) or jointly determined by the parameters configured by the high layer signaling; mod is a modulo operation, L" Rounding down for the operation.

In this way, the wideband CQI/PMI of different cells can be reported in different subframes, so that the sub-band CQIs of different cells can be reported in the same subframe, thereby saving feedback overhead and ensuring the performance of the wideband CQI/PMI. purpose.

Alternatively, as another embodiment, ^^. „ The value range is ^ to ^ -1 , that is, I can be -I to, from, the collection port

_{+ Τ 1 N pd -1 i}} _f I is selected from the selection ^^ ^{^ TN 1, 1 OFFSET, wideband} CQI ° N l OFFSET, RI is

The offset of the reported subframe of the RI relative to the reported subframe of the subband CQI. In this way, it can be ensured that the reporting of the wideband CQI/PMI cannot be reported in advance of the RI corresponding to the broadband PMI, and cannot fall behind the uplink of the sub-band CQI measured according to the wideband PMI.

The first subframe offset and the second subframe offset of the embodiment of the present invention are not limited to the above specific embodiments. For example, the first subframe offset notified by the base station may be equal to the above Ν ₀匪~ _{nd CQ1} + N OFFSET , CQI ° In this case, when determining the reported subframe of the wideband CQI/PMI in step 102, there is no need to consider

N ^l OFFSET, CQI. .

When multiple sub-band CQIs need to be reported in the same sub-frame, the UE may report up to M of the plurality of sub-band CQIs using PUCCH format3, and report the wideband CQI/PMI using PUCCH format3, where M is an integer greater than one. You can also use PUCCH format2 (format 2) to report one of multiple subband CQIs.

Optionally, as another embodiment, the base station may notify the UE by using the high layer signaling to report the PUCCH format of the CSI. If it is the PUCCH format 2, the UE reports one of the multiple CSIs that need to be reported in the same subframe; if it is the PUCCH format 3, the UE reports the most M of the multiple CSIs that need to be reported in the same subframe, where M is the advance Defined or higher layer signaling configured. The CSI can be RI, PMI, wideband CQI or subband CQI. Specifically, the pre-defined method of the M may be: when the UE needs to report the PMI or the RI, the value of the M is 2; when the UE does not need to report the PMI and the RI, the value of the M is an integer greater than 2.

It should be noted that, when the number of CSI-RS ports is 8, and the transmission mode 9 or the new transmission mode, and the precoding type indicator (PTI) is 0, the broadband CQI/ described in the embodiment of the present invention. The PMI may be the first PMI, and the sub-band CQI described in the embodiment of the present invention may be a wideband CQI and a broadband second PMI. When the CSI-RS port number is 8, and the transmission mode 9 or the new transmission mode, and the precoding type indicator (PTI) is 1, the broadband CQI/PMI described in the embodiment of the present invention may be a broadband CQI. And the second PMI, the subband CQI described in the embodiment of the present invention may be a subband CQI and a subband second PMI. Wherein the first PMI and the second PMI are two index values in the 8 antenna codebook, and the first PMI and the second PMI jointly determine a precoding matrix when the 8 antennas are transmitted. The above variations are also within the scope of the embodiments of the present invention.

FIG. 2 is a flowchart of a method for reporting channel state information according to another embodiment of the present invention. The method of Figure 2 is performed by a base station.

201. The user equipment is notified of the first subframe offset and the second subframe offset, so that the user equipment determines the upper subframe of the wideband CQI or the wideband PMI according to the first subframe offset, and determines according to the second subframe offset. The sub-band CQI reported subframe.

202. Receive a broadband CQI or a broadband PMI reported by the user equipment in the determined uplink CQI or the uplink subframe of the broadband PMI, and receive the sub-band CQI reported by the user equipment in the determined four subframes of the sub-band CQI. . In the embodiment of the present invention, different subframe offsets are configured for the wideband CQI/PMI and the subband CQI, and the CSI can be implemented more flexibly.

Optionally, as an embodiment, the foregoing first subframe offset may be an offset of a reported subframe of the wideband CQI or the wideband PMI with respect to the reported subframe of the subband CQI. At this time, when determining the reported subframe of the wideband CQI/PMI, the UE may comprehensively consider the first subframe offset and the second subframe offset. However, the embodiment of the present invention is not limited thereto, and the first subframe offset may be equal to the foregoing A _SCT , _wi ^ ^ ^ + AW _s ^ _ei . In this case, when determining the reported subframe of the wideband CQI/PMI, the UE only The first subframe offset needs to be considered without regard to the second subframe offset N. _FFSCT , .

Optionally, as another embodiment, the first subframe offset has a value range of ^. ^ _£ ^ to ^ -1 , can be a ruler ^ N _0FFSET , _RI , N _0FFSET , _RI + 1, H., N _PD —1} in N _0FFSET , _{WIDEBAND CQI} . N _0FFSET , _RI 7^

3 is a block diagram of a user equipment in accordance with an embodiment of the present invention. The user equipment 30 of FIG. 3 includes a receiving unit 31 and a determining unit 32.

The receiving unit 31 receives the first subframe offset and the second subframe offset notified by the base station. The determining unit 32 determines the reported subframe of the wideband CQI or the wideband PMI according to the first subframe offset received by the receiving unit 31, and determines the reported subframe of the subband CQI according to the second subframe offset received by the receiving unit 31.

Optionally, as an embodiment, the first subframe offset received by the receiving unit 31 is an offset of the wideband CQI or the reported subframe of the wideband PMI with respect to the reported subframe of the subband CQI. At this time, the determining unit 32 may determine the reported subframe of the wideband CQI or the wideband PMI according to the first subframe offset and the second subframe offset.

For example, the determining unit 32 may determine that the subframe satisfying the above equation (4) is a reported subframe of the wideband CQI or the wideband PMI.

Optionally, as another embodiment, the determining unit 32 may determine that the subframe that satisfies the formula (5) and does not satisfy the formula (6) is a sub-band CQI reporting subframe. In this way, the wideband CQI/PMI of different cells can be reported in different subframes, so that the sub-band CQIs of different cells can be reported in the same subframe, thereby saving feedback overhead and ensuring the performance of the wideband CQI/PMI. purpose.

1, where Ν ₀ is the rank indication RI report sub-frame - Alternatively, to N ₀ to the first embodiment as a further sub A _SCT offset in Benton embodiment, the formula (4), _wi ^ "ranges The offset of the reported sub-frame relative to the sub-band CQI. In this way, it can be ensured that the reporting of the wideband CQI/PMI cannot be reported in advance of the RI corresponding to the broadband PMI, and cannot be delayed from the reporting of the sub-band CQI measured according to the wideband PMI. .

The first subframe offset and the second subframe offset of the embodiment of the present invention are not limited to the above specific embodiments. For example, the first child offset received by the receiving unit 31 may be equal to the above N. _{FFS £} ^^ _ce , + N ₀ . In this case, the determining unit 32 does not need to consider N OFFSET, CQ1 when determining the reported subframe of the wideband CQI/PMI.

4 is a block diagram of a base station in accordance with an embodiment of the present invention. The base station 40 of Fig. 4 includes a notification unit 41 and a receiving unit 42.

The notifying unit 41 notifies the user equipment of the first subframe offset and the second subframe offset, so that the user equipment determines the reported subframe of the wideband CQI or the wideband PMI according to the first subframe offset, and is offset according to the second subframe. The reported subframe of the subband CQI is determined.

The receiving unit 42 receives the broadband CQI or the wideband PMI reported by the user equipment in the determined uplink CQI or the uplink subframe of the wideband PMI, and receives the user equipment in the determined upper subframe of the subband CQI. Subband CQI.

Optionally, as an embodiment, the first subframe offset notified by the notification unit 41 is an offset of the uplink CQI or the reported subframe of the wideband PMI with respect to the reported subframe of the subband CQI. At this time, when determining the reported subframe of the wideband CQI/PMI, the UE may comprehensively consider the first subframe offset and the second subframe offset. However, the embodiment of the present invention is not limited thereto, and the first subframe offset notified by the notification unit 41 may be equal to the upper N _0FFSET , the _{wideband CQ1 +} N _0FFSET , and the _CQ1 in this case, when the UE determines the reported subframe of the wideband CQI/PMI Only the first subframe offset needs to be considered, and the second subframe offset N need not be considered. _fraCT , _cei .

In this way, the wideband CQI/PMI of different cells can be reported in different subframes, so that the sub-band CQIs of different cells can be reported in the same subframe, thereby saving feedback overhead and ensuring the performance of the wideband CQI/PMI. purpose. Optionally, as another embodiment, the first subframe offset notified by the notification unit 41 ranges from N ₀ to N _pd -1 , that is, from the set N _0FFSET , _RI , N , _RI +l, . .., N is selected in N _pd - 1}. The offset of the reported subframe of NR[ relative to the reported subframe of the subband CQI. In this way, it can be ensured that the reporting of the wideband CQI/PMI cannot be reported in advance of the RI corresponding to the broadband PMI, and cannot be delayed from the reporting of the subband CQI measured according to the wideband PMI.

Figure 5 is a block diagram of a user equipment in accordance with another embodiment of the present invention. The user equipment 50 of FIG. 5 includes a processor 51, a memory 52, and a receiving circuit 53. Processor 51. The memory 52 and the receiving circuit 53 are connected by a bus system 59.

The receiving circuit 53 receives the first subframe offset and the second subframe offset notified by the base station. The memory 52 is configured to store an instruction for causing the processor 51 to: determine a reported subframe of the wideband CQI or the wideband PMI according to the first subframe offset received by the receiving circuit 53, and according to the second subframe offset received by the receiving circuit 53 The decision is made to determine the sub-frame of the sub-band CQI.

In addition, the user equipment 50 may further include a transmitting circuit 54, an antenna 55, and the like. The processor 51 controls the operation of the user equipment 50, which may also be referred to as a CPU (Central Processing Unit). The memory 52 can include read only memory and random access memory and provides instructions and data to the processor 51. A portion of memory 52 may also include non-volatile random access memory (NVRAM). In a particular application, transmit circuitry 54 and receive circuitry 53 can be coupled to antenna 55. The various components of user equipment 50 are coupled together by a bus system 59, which may include, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 59 in the figure.

The method disclosed in the foregoing embodiments of the present invention may be applied to the processor 51 or implemented by the processor 51. Processor 51 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 51 or an instruction in a form of software. The processor 51 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware. Component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware decoding processor, or The combination of hardware and software modules in the decoding processor is completed. The software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 52, and the processor 51 reads the information in the memory 52 and performs the steps of the above method in combination with its hardware.

Optionally, as an embodiment, the first subframe offset received by the receiving circuit 53 is an offset of the wideband CQI or the reported subframe of the wideband PMI with respect to the reported subframe of the subband CQI. At this time, the processor 51 may determine the reported subframe of the wideband CQI or the wideband PMI according to the first subframe offset and the second subframe offset.

For example, the processor 51 may determine that the subframe that satisfies the above equation (4) is a reported subframe of a wideband CQI or a wideband PMI.

Optionally, as another embodiment, the processor 51 may determine that the formula (5) is satisfied and the expression is not satisfied.

The subframe of (6) is the reported subframe of the subband CQI.

The transmitting circuit 54 reports the corresponding CSI to the base station via the antenna 55. Specifically, the transmitting circuit 54 reports the wideband CQI or the wideband PMI in the reported subframe of the wideband CQI or the wideband PMI determined by the processor 51, and the upper 4 subband CQI in the upper subframe of the subband CQI determined by the processor 51. .

Alternatively, as a first sub-A _SCT offset in Benton embodiment, Formula (4) to another embodiment, _wi ^ _"N 0FFS ranges to N - 1, where N ₀ is the rank indication RI reporting sub The offset of the frame relative to the reported sub-frame of the sub-band CQI. In this way, it can be ensured that the reporting of the wideband CQI/PMI cannot be reported in advance of the RI corresponding to the wideband PMI, and cannot be lagging behind the sub-band CQI measured according to the wideband PMI. Reported.

The first subframe offset and the second subframe offset of the embodiment of the present invention are not limited to the above specific embodiments. For example, the first child offset received by the receiving circuit 53 may be equal to the above N. _{FFS £} ^^ _ce , + N _0FFSET , _C In this case, the processor 51 has no control, ^ OFFSET , CQI when determining the reported subframe of the wideband CQI/PMI.

6 is a block diagram of a base station according to another embodiment of the present invention. The base station 60 of Fig. 6 includes a transmitting circuit 61 and a receiving circuit 62.

The transmitting circuit 61 notifies the user equipment of the first subframe offset and the second subframe offset, so that the user equipment determines the reported subframe of the wideband CQI or the wideband PMI according to the first subframe offset, and is offset according to the second subframe. The reported subframe of the subband CQI is determined. The receiving circuit 62 receives the wideband CQI or the wideband PMI reported by the user equipment in the determined wideband CQI or the uplink subframe of the wideband PMI, and receives the subband of the user equipment in the determined upper subframe of the subband CQI. CQI.

Further, the base station 60 may further include an antenna 63 or the like. In a particular application, transmit circuitry 61 and receive circuitry 62 can be coupled to antenna 63. The transmitting circuit 61 and the receiving circuit 62 can be coupled together by a bus system 69. The bus system 69 can include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 69 in the figure.

Optionally, as an embodiment, the first subframe offset notified by the transmitting circuit 51 is an offset of the uplink CQI or the reported subframe of the wideband PMI with respect to the reported subframe of the subband CQI. At this time, when determining the reported subframe of the wideband CQI/PMI, the UE may comprehensively consider the first subframe offset and the second subframe offset. However, the embodiment of the present invention is not limited thereto, and the first subframe offset notified by the transmitting circuit 51 may be equal to upper N _0FFSET , _{wideband CQ1 +} N _0FFSET , _CQ1 . In this case, when determining the reported subframe of the wideband CQI/PMI, the UE only needs to consider the first subframe offset, and does not need to consider the second subframe offset N. _fraCT , _cei .

Optionally, as another embodiment, the first subframe offset notified by the transmitting circuit 61 ranges from N ₀ to N _pd -1 , that is, from the set Ν ₀ N _ET , _RI + l, ... , N is selected in N _pd -1}. The offset of the reported subframe of N, _ET , _RI R relative to the reported subframe of the subband CQI. In this way, it can be ensured that the reporting of the wideband CQI/PMI cannot be reported in advance of the RI corresponding to the broadband PMI, and cannot be delayed from the reporting of the subband CQI measured according to the wideband PMI.

FIG. 7 is a flowchart of a method for reporting channel state information according to another embodiment of the present invention. The method of Figure 7 is performed by a user equipment.

701. Receive a PUCCH format used by the base station to report CSI. The CSI includes at least one of the following: RI, PMI, wideband CQI, and subband CQI.

702. If the PUCCH format is the PUCCH format 2, report one of the multiple CSIs that need to be reported in the same subframe. If the PUCCH format is the PUCCH format 3, report the most M of the multiple CSIs that need to be reported in the same subframe. , where M is a predefined or high level For signaling configuration, M is an integer greater than 1.

In the embodiment of the present invention, the base station configures the user equipment to report the PUCCH format of the CSI, so that the user equipment can perform the corresponding CSI reporting operation according to the configured PUCCH format, so that the CSI reporting is more flexible.

Optionally, as an embodiment, the foregoing manner of pre-defining M may include: when the PMI or the RI needs to be reported, the value of the M is 2; when the PMI and the RI are not required to be reported, the value of the M is greater than 2. Integer.

FIG. 8 is a flowchart of a method for reporting channel state information according to another embodiment of the present invention. The method of Figure 8 is performed by the base.

801. Notify the user equipment of a PUCCH format for reporting CSI. The CSI includes at least one of the following: RI, PMI, wideband CQI, and subband CQI.

802. If the PUCCH format is the PUCCH format 2, receive one of the multiple CSIs that are reported by the user equipment and need to be reported in the same subframe. If the PUCCH format is the PUCCH format 3, the received user equipment reports that it needs to be reported in the same subframe. Up to M of the plurality of CSIs, where M is a predefined or higher layer signaling configuration, and M is an integer greater than one,

9 is a block diagram of a user equipment according to another embodiment of the present invention. The user equipment 90 of Fig. 9 includes a receiving unit 91 and a transmitting unit 92.

The receiving unit 91 receives the PUCCH format for reporting CSI notified by the base station. The CSI includes at least one of the following: RI, PMI, wideband CQI, and subband CQI.

If the PUCCH format received by the receiving unit 91 is the PUCCH format 2, the sending unit 92 reports one of the plurality of CSIs that need to be reported in the same subframe. If the PUCCH format received by the receiving unit 91 is the PUCCH format 3, the sending unit 92 reports A maximum of M of the plurality of CSIs that need to be reported in the same subframe, where M is a predefined or higher layer signaling configuration, and M is an integer greater than one.

In the embodiment of the present invention, the base station configures the user equipment to report the PUCCH format of the CSI, so as to use The CSI reporting operation can be performed according to the configured PUCCH format, so that the CSI reporting is more flexible.

Optionally, as an embodiment, when the PMI or the RI needs to be reported, the value of M is 2; when the PMI and the RI are not required to be reported, the value of M is an integer greater than 2.

Figure 10 is a block diagram of a base station in accordance with another embodiment of the present invention. The base station 95 of Fig. 10 includes a notification unit 96 and a receiving unit 97.

The notification unit 96 notifies the user equipment of the PUCCH format for reporting CSI. The CSI includes at least one of the following: RI, PMI, wideband CQI, and subband CQI.

If the PUCCH format of the notification unit 96 is the PUCCH format 2, the receiving unit 97 receives one of the plurality of CSIs that are reported by the user equipment and needs to be reported in the same subframe; if the PUCCH format notified by the notification unit 96 is the PUCCH format 3, The receiving unit 97 receives at most M of the plurality of CSIs that are reported by the user equipment and needs to be reported in the same subframe, where M is a predefined or higher layer signaling configuration, and M is an integer greater than 1.

11 is a block diagram of a user equipment according to another embodiment of the present invention. The user equipment 110 of FIG. 11 includes a receiving circuit 111 and a transmitting circuit 112.

The receiving circuit 111 receives the PUCCH format for reporting CSI notified by the base station. The CSI includes at least one of the following: RI, PMI, wideband CQI, and subband CQI.

If the PUCCH format received by the receiving circuit 111 is the PUCCH format 2, the transmitting circuit 112 reports one of the plurality of CSIs that need to be reported in the same subframe. If the PUCCH format received by the receiving circuit 111 is the PUCCH format 3, the transmitting circuit 112 reports A maximum of M of the plurality of CSIs that need to be reported in the same subframe, where M is a predefined or higher layer signaling configuration, and M is an integer greater than one.

In the embodiment of the present invention, the base station configures the user equipment to report the PUCCH format of the CSI, so that the user equipment can perform the corresponding CSI reporting operation according to the configured PUCCH format, so that the CSI is more flexible.

Further, the user equipment 110 may further include an antenna 113 or the like. Specific application, transmitting circuit 111 and receiving circuitry 112 may be coupled to antenna 113. The transmitting circuit 111 and the receiving circuit 112 can be coupled together by a bus system 119. The bus system 119 can include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 119 in the figure.

Figure 12 is a block diagram of a base station in accordance with another embodiment of the present invention. The base station 120 of FIG. 12 includes a transmitting circuit 121 and a receiving circuit 122.

The transmitting circuit 121 notifies the user equipment of the PUCCH format for reporting CSI. The CSI includes at least one of the following: RI, PMI, wideband CQI, and subband CQI.

If the PUCCH format of the transmitting circuit 121 is the PUCCH format 2, the receiving circuit 122 receives one of the plurality of CSIs that are reported by the user equipment and needs to be reported in the same subframe; if the PUCCH format notified by the transmitting circuit 121 is the PUCCH format 3, The receiving circuit 122 receives at most M of the plurality of CSIs that are reported by the user equipment and needs to be reported in the same subframe, where M is a predefined or higher layer signaling configuration, and M is an integer greater than 1.

Further, the base station 120 may further include an antenna 123 and the like. In a particular application, transmit circuitry 121 and receive circuitry 122 can be coupled to antenna 123. The transmitting circuit 121 and the receiving circuit 122 can be coupled together by a bus system 129. The bus system 129 can include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 129 in the figure.

A communication system according to an embodiment of the present invention may include the above-described user equipment 30, 50, 90 or 110, or include the above-described base station 40, 60, 95 or 120.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. Professionals can use different parties for each specific application The described functionality is implemented, but such implementation should not be considered to be beyond the scope of the invention.

It will be apparent to those skilled in the art that, for the convenience of the description and the cleaning process, the specific operation of the system, the device and the unit described above may be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

1. A method for reporting channel status information, characterized by including:

Receive the first subframe offset and the second subframe offset notified by the base station;

Determine the reporting subframe of the wideband channel quality indicator CQI or the wideband precoding matrix indication PMI according to the first subframe offset, and determine the reporting subframe of the subband CQI according to the second subframe offset.

2. The method of claim 1, wherein the first subframe offset is the reporting subframe for determining the wideband CQI or wideband PMI according to the first subframe offset, including:

The reporting subframe of the wideband CQI or wideband PMI is determined according to the first subframe offset and the second subframe offset.

3. The method of claim 2, wherein determining the reporting subframe of the wideband CQI or wideband PMI according to the first subframe offset and the second subframe offset includes: Make sure it satisfies (lO x / +L" _s / 2』_ N. _fra£r , _cei -

The subframe of ^ is the reporting subframe of the broadband CQI or broadband PMI,

where is the wireless frame number, is the time slot number, N. _{F CT} , _wi ^„ _d is the first subframe offset, N. _fra is the second subframe offset, and is the CQI reporting period; H" is combined with predefined parameters and parameters configured by higher layer signaling Determine, or configured by high-level signaling; mod is the modulo operation, and L" is the downward rounding operation.

4. The method according to claim 3, characterized in that, the N. _FFSCT , the value range of _wi is N. _FFS£ ^ to N -l , where N. _FFS£ ^ is the offset of the reported subframe of the rank indication RI relative to the reported subframe of the subband CQI.

5. The method according to any one of claims 1 to 4, wherein the determining the reporting subframe of the subband CQI according to the second subframe offset includes:

Determine the child that satisfies (l0 X _W/ + \ n _s 12j - N _{0FFSET CQI} ₎ _mod _N _pd = 0 and does not satisfy (l0 The frame is the reporting subframe of the subband CQI, where is the wireless frame number, is the time slot number, N. _fra£ „ is the offset of the second subframe, N _pd is the CQI reporting period; H" is predefined The parameters of are determined jointly with the parameters of high-level signaling configuration, or configured by high-level signaling; mod is the modulo operation, and L" is the downward rounding operation.

6. The method of claim 5, further comprising: Use PUCCH format 2 to report one of multiple sub-band CQIs; or use PUCCH format 3 to report up to M of multiple sub-band CQIs, and use the PUCCH format 3 to report wideband CQI or wideband PMI.

7. A method for reporting channel status information, characterized by including:

Notifying the user equipment of the first subframe offset and the second subframe offset, so that the user equipment determines the reporting subframe of the wideband channel quality indicator CQI or wideband precoding matrix indicator PMI according to the first subframe offset, And determine the reporting subframe of the subband CQI according to the second subframe offset;

Receive the wideband CQI or wideband PMI reported by the user equipment in the determined reporting subframe of the wideband CQI or wideband PMI, and receive the user equipment reported in the determined upper subframe of the subband CQI. Cai Gen’s daughter is CQI.

8. The method of claim 7, wherein the first subframe offset is the

9. The method according to claim 8, wherein the value range of the first subframe offset is ^^ _£ ^ to ^^ -1, where ^^ is the relative value of the reported subframe of the rank indicator RI. The offset of the reporting subframe of the subband CQI.

10. A user equipment, characterized by: including:

A receiving unit, configured to receive the first subframe offset and the second subframe offset notified by the base station; a determining unit, configured to determine the wideband channel quality indicator CQI or wideband preset based on the first subframe offset received by the receiving unit. The coding matrix indicates the reporting subframe of the PMI, and determines the reporting subframe of the subband CQI according to the second subframe offset received by the receiving unit.

11. The user equipment according to claim 10, wherein the first subframe offset received by the receiving unit is the reported subframe of the wideband CQI or wideband PMI relative to the reported subframe of the subband CQI. frame offset,

The determining unit is specifically configured to determine the reporting subframe of the wideband CQI or wideband PMI according to the first subframe offset and the second subframe offset.

12. _The user equipment according to _claim 11, wherein the determining unit _is specifically configured to determine _that ( ₁₀ The subframe = 0 is the reporting subframe of the broadband CQI or broadband PMI,

where is the wireless frame number, is the time slot number, N. _FCT , _wi ^„ _d is the first subframe offset, N. _fraCT , _eei is the second subframe offset, N is the CQI reporting period; H" is configured through predefined parameters and higher layer signaling The parameters are jointly determined, or configured by high-level signaling; mod is the modulus Operation, L" is the rounding down operation.

13. The user equipment according to claim 12, characterized in that the value range of N, _wideban is N _0FFSET , _RI to N - 1 , where N ₀ is the reported subframe of the rank indicator RI relative to the The offset of the reporting subframe of the subband CQI.

14. The user equipment according to any one of claims 10 to 13, characterized in that the determining unit is specifically configured to determine that (10 χ +L" _s / ² "-N. _FFSCT , _cei ) mod N = 0 and does not satisfy (1(^ + ^ / 2″-^.^^^) 1∞ ₍ 1( ^ ) = 0 subframe is the reporting subframe of the subband CQI, where is the wireless frame number, is Timeslot number, N. _FFSCT is the second subframe offset, N _pd is the CQI reporting period; H is jointly determined by predefined parameters and parameters configured by higher layer signaling; mod is the modulo operation, and L" is the direction Next rounding operation.

15. A base station, characterized by including:

Notification unit, configured to notify the user equipment of the first subframe offset and the second subframe offset, so that the user equipment determines the wideband channel quality indicator CQI or the wideband precoding matrix indicator PMI according to the first subframe offset. the reporting subframe, and determine the reporting subframe of the subband CQI according to the second subframe offset;

A receiving unit configured to receive the wideband CQI or wideband PMI reported by the user equipment in the determined reporting subframe of the wideband CQI or wideband PMI, and receive the user equipment in the determined reporting subframe of the subband CQI. The upper subband CQI in the upper subframe.

16. The base station according to claim 15, wherein the first subframe offset notified by the notification unit is the reported subframe of the wideband CQI or wideband PMI relative to the reported subframe of the subband CQI. offset.

17. The base station according to claim 16, wherein the value range of the first subframe offset notified by the notification unit is N ₀ to N - 1 , where N _0FFSET , _R1 is the reported rank indicator RI. The offset of the subframe relative to the reported subframe of the subband CQI.

18. A method for reporting channel status information, characterized by including:

Receive the physical uplink control channel PUCCH format notified by the base station for reporting channel status information CSI;

If the PUCCH format is PUCCH format 2, reporting one of the multiple CSIs that need to be on the same subframe;

If the PUCCH format is PUCCH format 3, up to M of the multiple CSIs that need to be reported in the same subframe are reported, where M is predefined or configured by higher layer signaling, M is an integer greater than 1,

The CSI includes at least one of the following: rank indicator RI, precoding matrix indicator PMI, wideband channel quality indicator CQI and subband CQI.

19. The method of claim 18, wherein M is predefined including:

When PMI or RI needs to be reported, the value of M is 2;

When PMI and RI are not required, the value of M is an integer greater than 2.

20. A method for reporting channel status information, characterized by including:

Notify the user equipment of the physical uplink control channel PUCCH format used to report channel status information CSI;

If the PUCCH format is PUCCH format 2, receive one of the multiple CSIs reported by the user equipment that need to be reported in the same subframe;

If the PUCCH format is PUCCH format 3, receive at most M of the multiple CSIs reported by the user equipment that need to be reported in the same subframe, where M is predefined or configured by high-level signaling, and M is greater than an integer of 1,

21. The method of claim 20, wherein M is predefined including:

When PMI or RI needs to be reported, the value of M is 2;

When PMI and RI are not required, the value of M is an integer greater than 2.

22. A user equipment, characterized by: including:

The receiving unit is configured to receive the physical uplink control channel PUCCH format notified by the base station for reporting channel status information CSI;

Transmitting unit, used if the PUCCH format received by the receiving unit is PUCCH format

2, then report one of the multiple CSIs that need to be reported in the same subframe; if the PUCCH format received by the receiving unit is PUCCH format 3, then report at most M of the multiple CSIs that need to be reported in the same subframe, Where M is predefined or configured by high-level signaling, M is an integer greater than 1,

23. The user equipment according to claim 22, characterized in that,

When PMI or RI needs to be reported, the value of M is 2;

When PMI and RI are not required, the value of M is an integer greater than 2.

24. A base station, characterized by including:

Notification unit, used to notify user equipment of the physical uplink control channel PUCCH format used to report channel state information CSI;

A receiving unit, configured to receive one of the multiple CSIs reported by the user equipment that need to be reported in the same subframe if the PUCCH format notified by the notification unit is PUCCH format 2; if the PUCCH format notified by the notification unit is PUCCH format 3, then receive at most M of the multiple CSIs reported by the user equipment that need to be reported in the same subframe, where M is predefined or configured by high-level signaling, and M is an integer greater than 1,

25. The base station according to claim 24, characterized in that,

When PMI or RI needs to be reported, the value of M is 2;