WO2012094941A1

WO2012094941A1 - Method and terminal for transmitting channel state information

Info

Publication number: WO2012094941A1
Application number: PCT/CN2011/084471
Authority: WO
Inventors: 杨维维; 戴博; 梁春丽; 夏树强; 喻斌
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-01-10
Filing date: 2011-12-22
Publication date: 2012-07-19
Also published as: CN102075293B; CN102075293A

Abstract

A method and terminal for transmitting channel state information. In the carrier aggregation scenario, the CSIs of a plurality of downlink cells to be reported are encoded according to a preset encoding computation manner to obtain the encoded CSI information; and after the encoded CSI information, encoded data and/or other encoded uplink control information are interleaved, they are transmitted over a physical uplink shared channel. The above technical solution effectively addresses the problem of transmitting channel state information over the PUSCH in the carrier aggregation scenario.

Description

Method and terminal for transmitting channel state information

Technical field

The present invention relates to the field of mobile wireless communications, and in particular, to a method and a terminal for transmitting channel state information.

Background technique

In Long Term Evolution (LTE), the control signaling required for uplink transmission includes an ACK/NACK (Acknowledgement/Negative Acknowledgement) and channel state information (CSI, which reflects the state of the downlink physical channel). Channel State Information ). Among them, CSI mainly has the following three forms: Channel Quality Indication (CQI), Pre-coding Matrix Indicator (PMI), and Rank Indicator (RI).

In the LTE system, the ACK/NACK response message is transmitted on the physical uplink control channel (PUCCH, Physical Uplink Control) in the format 1/1 a/lb (PUCCH format 1/1 al/b). If the terminal (UE, User Equipment) needs to send uplink data, it is transmitted on the Physical Uplink Shared Channel (PUSCH). The reported CSI can be periodic or non-periodic. The specific feedback method of CSI is shown in Table 1 below:

Table 1 Uplink physical channels corresponding to periodic and aperiodic reporting

As shown in Table 1, if the UE does not need to send uplink data, the CSI reported periodically is

The PUCCH is transmitted in the format 2/2a/2b (PUCCH format 2/2a/2b). When the UE needs to send the uplink data, the periodically reported CSI is transmitted on the PUSCH; the non-periodically reported CSI is transmitted only on the PUSCH.

A schematic diagram of uplink control signaling transmitted on the PUSCH is shown in FIG. The base station schedules a certain UE to send the PUSCH by using an uplink grant authorization (UL grant, Uplink grant) signaling. Upstream scheduling The right signaling may be sent to the scheduled UE by a Physical Downlink Control Channel (PDCCH) having Downlink Control Information (DCI) format 0 (DCI format 0). A bit in the DCI format 0 is used to trigger the aperiodic CSI reporting. If the UE detects the PDCCH in the DCI format 0 format, the PUSCH is sent according to the UL grant included therein. If the UE detects that the 1 bit of the triggered aperiodic CSI reported in the DCI format 0 is set to T, the aperiodic CSI report is sent in the PUSCH scheduled by the DCI format 0.

The coding process when CSI (including periodic CSI and aperiodic CSI) is transmitted on the PUSCH mainly includes: First, calculating the required number of coded modulation symbols 2 _ee C, then performing channel coding, rate matching, until the target length is satisfied 0^ =3⁄4^0„, ^ = until ^ is the modulation order of the PUSCH corresponding transport block; then the encoded CSI information, the encoded data and/or other encoded uplink control information are channel interleaved and transmitted.

In order to meet the requirements of the ITU-Advanced (International Telecommunication Union-Advanced), the LTE-Advanced Long Term Evolution Advanced (LTE-A) system needs to support larger system bandwidth (up to 100MHz) and need to be backward compatible with LTE existing standards. Based on the existing LTE system, larger bandwidth can be obtained by combining the bandwidth of the LTE system. This technology is called Carrier Aggregation (CA) technology. CA technology can improve the spectrum utilization of the IMT-Advance system, alleviate the shortage of spectrum resources, and optimize the utilization of spectrum resources. The carrier aggregation LTE system bandwidth can be regarded as component carrier frequency (CC, Component Carrier, each component carrier frequency can also be called a cell (Cell), that is, a spectrum can be aggregated by n component carrier frequencies. The resources of the R10 UE are composed of n cells (or component carrier frequencies) in the frequency domain, where one cell is called a primary cell or a primary component carrier, and the other cells are called secondary cells or secondary component carriers. .

At present, the conclusions about the aperiodic CSI reporting in the carrier aggregation scenario are:

A, if it is based on the user search space, there are 2 bits in the UL grant to trigger the aperiodic CSI reporting: where "00" represents no triggering of aperiodic CSI reporting; "01" represents triggering and uplink cell SIB-2 (second Class system information block) Aperiodic CSI reporting of the connected downlink cell (or component carrier); "10" RRC signaling configuration to trigger which downlink cell (or component carrier) is non- The periodic CSI is reported; "11" is configured by RRC signaling to trigger the aperiodic CSI reporting of the downlink cells (or component carriers);

B, if it is based on the common search space, there is 1 bit in the UL grant to trigger the aperiodic CSI reporting, where '0, which means that the aperiodic CSI is not triggered, and T is the acyclic CSI report, but which downlink cell is triggered ( The aperiodic CSI reporting of the component carrier or the component carrier further needs to be further discussed. The aperiodic CSI reporting of the triggered one or more downlink cells (or component carriers) is transmitted on the PUSCH corresponding to the UL grant.

The conclusion that the periodic CSI report is: The parameters required for each downlink cell (or component carrier) to be reported are independently configured. When the aperiodic CSI is not triggered and the primary cell (or component carrier) has PUSCH transmission. The periodic CSI reports the PUSCH transmission on the primary cell (or component carrier); when there is no PUSCH transmission on the primary cell (or component carrier), it is transmitted on the PUSCH of other uplink cells (or component carriers), and which cell is specifically selected (or Component carrier) needs further discussion.

In summary, the following technical problems exist in the prior art: In the LTE-A carrier aggregation scenario, there are scenarios in which CSIs of multiple downlink cells (or component carriers) are transmitted on the PUSCH, but multiple cells have not been proposed yet. When the CSI of the component carrier is reported, how to transmit on the PUSCH, the CSI information on the PUSCH under carrier aggregation cannot be implemented. Summary of the invention

The technical problem to be solved by the present invention is to provide a method and a terminal for transmitting channel state information, and to solve the problem of transmitting channel state information on a physical uplink shared channel in a carrier aggregation scenario.

A method for transmitting channel state information includes: encoding, in a carrier aggregation scenario, channel state information (CSI) of a plurality of downlink cells that need to be reported according to a predetermined manner, to obtain coded CSI information;

The coded CSI information, the coded data, and/or the encoded other uplink control information are interleaved and transmitted on a physical uplink shared channel (PUSCH).

The step of encoding CSIs of multiple downlink cells that need to be reported according to a predetermined manner includes: The CSI information of the plurality of downlink cells that need to be reported is cascaded to obtain a bit sequence 歹 ij before encoding; the bit sequence is encoded, and the rate is matched to the encoded target length to obtain the encoded CSI information.

The method also includes:

Obtaining the encoded target length according to the number of the coded modulation symbols and the modulation order, wherein, the step of encoding the CSIs of the plurality of downlink cells that need to be reported according to a predetermined manner includes:

The bit sequence of the CSI information that needs to be reported in each downlink cell is encoded, the rate is matched to the encoded target length, and the encoded sequence is cascaded to obtain the encoded CSI information.

The method also includes:

Obtaining the encoded target length according to the number of coded modulation symbols, the modulation order, and the number of downlink cells that need to report CSI information;

The number of the coded modulation symbols is calculated by multiplying the number of downlink cells that need to report CSI information by the maximum number of bits in the CSI information that each downlink cell needs to report.

The method also includes:

The encoded target length is obtained according to the number of the coded modulation symbols and the modulation order. The number of the coded modulation symbols is calculated according to the maximum number of bits in the CSI information that each downlink cell needs to report.

The method also includes:

Obtaining the encoded target length according to the number of the coded modulation symbols and the modulation order; wherein, the number of the coded modulation symbols is calculated according to the number of bits of the CSI information that each downlink cell needs to report.

The step of obtaining the encoded target length according to the number of coded modulation symbols, the modulation order, and the number of downlink cells that need to report CSI information includes:

Multiplying the number of the coded modulation symbols by the modulation order, divided by the need to report CSI information The number of the downlink cells is rounded up to obtain the encoded target length; or, the number of the coded modulation symbols is divided by the number of downlink cells that need to report CSI information, multiplied by the modulation order, and then upward. Rounding takes the encoded target length.

The step of obtaining the encoded target length according to the number of coded modulation symbols and the modulation order includes:

The coded target length is obtained by multiplying the number of coded modulation symbols by the modulation order.

The CSI information is periodic CSI information and/or aperiodic CSI information.

The cascading the CSI information of the multiple downlink cells that need to be reported or the cascading the encoded sequence includes:

Cascade in any of the following sequences:

Cell index order;

Cell priority order;

a primary primary cell, and a secondary secondary cell, and if there are multiple secondary cells, the multiple secondary cells are in the order of the small cell index;

The first periodic CSI, and then the non-periodic CSI information; or the non-periodic CSI, and the periodic CSI, and if there are multiple downlink cells that need to report periodic CSI information or aperiodic CSI information, report periodic CSI information or aperiodic CSI information. The downlink cells are then in the order of the cell index.

Wherein, when the CSI information is Channel Quality Indication (CQI) and/or Precoding Matrix Indication (PMI) information, the step of encoding the bit sequence before encoding or the CSI that each downlink cell needs to report separately The steps of encoding the bit sequence of information include:

The corresponding bit sequence is encoded in one of two ways:

The first type: when l ^CQllPM <= N, ^编码 Reed-Muller code is used for encoding; when _{N < 1} CQ <=M釆 is coded with tail biting convolutional code (TBCC code) When l ^CQ1 >M, 釆 is encoded by Turbo code, where M and N are fixed values agreed by the base station and the terminal, JL N<M;

Second: When / ^ce " ^PM <= N , use the Reed-Muller mode; / ^C2 " ^PM > N, 釆 In the TBCC code mode, where N is a fixed value agreed by the base station and the terminal; where is the length of the pre-encoding bit sequence. The method also includes:

When the length of the bit sequence is greater than 11 bits, a cyclic redundancy check of length 8 is performed. A transmitting terminal for channel state information is applied to a carrier aggregation system, where the transmitting terminal includes an encoding calculation unit, an interleaving unit, and a transmission unit, where:

The coding calculation unit is configured to: encode channel state information (CSI) information of a plurality of downlink cells that need to be reported according to a predetermined manner, to obtain coded CSI information;

The interleaving unit is configured to: interleave the encoded CSI information, the encoded data, and/or the encoded other uplink control information, and then output the signal to the transmission unit;

The transmission unit is configured to: output data output by the interleaving unit on a physical uplink shared channel

Transfer on (PUSCH).

The coding calculation unit is configured to encode the CSI information of the plurality of downlink cells that need to be reported according to any one of the following manners to obtain the coded CSI information:

Manner 1: Cascading CSI information of multiple downlink cells that need to be reported to obtain a bit sequence before encoding; encoding the bit sequence before encoding, matching the rate to the encoded target length, and obtaining the coded CSI Information

In the second method, the bit sequence of the CSI information that needs to be reported in each downlink cell is encoded, the rate is matched to the encoded target length, and the encoded sequence is cascaded to obtain the encoded CSI information.

The encoding calculation unit is further configured to:

When the encoded CSI information is obtained according to the foregoing manner, the required number of coded modulation symbols is obtained according to the length of the bit sequence, and the number of the coded modulation symbols is multiplied by the modulation order to obtain the coded Target length

When the coded CSI information is obtained according to the mode 2, the number of downlink cells that need to report the CSI information is multiplied by the maximum number of bits in the bit sequence of the CSI information that each downlink cell needs to report, to obtain the required code modulation. Number of symbols; multiplying the number of coded modulation symbols by modulation order The number is divided by the number of the downlink cells and then rounded up; or, the number of the coded modulation symbols is divided by the number of the downlink cells, multiplied by the modulation order, and then rounded up to obtain each The target length of the CSI information to be reported by the downlink cell; or

Obtaining a required number of coded modulation symbols according to a maximum number of bits in a bit sequence of CSI information that is to be reported by each downlink cell, and multiplying the number of the coded modulation symbols by a modulation order to obtain the coded target length; Or,

Obtaining a required number of coded modulation symbols according to the number of bits of the bit sequence of the CSI information to be reported by each downlink cell, and multiplying the number of the coded modulation symbols by the modulation order to obtain the coded target length.

The coding calculation unit is configured to cascade the CSI information of the multiple downlink cells or to concatenate the encoded sequences according to any one of the following sequences:

Cell index order;

Cell priority order;

Wherein, when the CSI information is CQI and/or PMI information, the coding calculation unit is further set to be in any one of the following two manners:

The second type is: when ^CQIIPM <= N, the code is encoded by the Reed-Muller code; when ^CQI ' ^PM > N, the code is coded by using the TBCC code, where N is a good agreement between the base station and the terminal. Fixed value

Wherein, the length of the pre-encoding bit sequence. Wherein the coding calculation unit is further configured

to make:

When the length of the bit sequence is greater than 11 bits, a cyclic redundancy check of length 8 is performed.

Using the above solution, the problem of channel state information transmission on the physical uplink shared channel in the carrier aggregation scenario is effectively solved.

BRIEF abstract

The drawings are intended to provide a further understanding of the invention, and are intended to be illustrative of the invention. In the drawing:

FIG. 1 is a schematic diagram of uplink data signaling multiplexing in uplink control signaling in an LTE system;

FIG. 2 is a schematic structural diagram of a transmitting terminal of channel state information according to an embodiment of the present invention.

Preferred embodiment of the invention

A main object of the present invention is to provide a method for transmitting channel state information on a physical uplink shared channel. The UE obtains the encoded CSI information according to a predetermined coding calculation manner, and then encodes the CSI information and other encoded uplinks. The control information and/or the encoded data are interleaved and then transmitted on the PUSCH.

The UE obtains the encoded CSI information according to any one of the following manners:

The CSI information [C _0l w) of the downlink cell (or component carrier) that the UE will need to report.

Cascading in a pre-defined order to obtain a bit sequence before encoding; calculating the number of coded modulation symbols required for transmission on the PUSCH according to the length of the bit sequence before encoding (o), according to the corresponding coding The method encodes the bit sequence to obtain encoded CSI information, wherein the encoded target length is 0^·Q _m . Where = 0, ..., C -1 , C are downlink cells (or component carriers) that need to report CSI information. The number is the bit sequence of the CSI information that needs to be reported by the downlink cell (or component carrier), and is the length of the bit sequence of the CSI information that the downlink cell (or component carrier) I needs to report.

Method 2,

The UE calculates the number of coded modulation symbols required to transmit the reported CSI information on the PUSCH according to O = C . ma _X (/(.), /( ₁ ), ..., /( _{c 1)} ), UE According to the corresponding coding mode, the bit sequence of the CSI information of the C downlink cells (or component carriers) to be reported is respectively [ ₀ , ₀ code, where each downlink cell (or component carrier) needs to be encoded after the CSI information is reported. The target length is to cascade the C coded sequences in a predefined order.

To the encoded CSI information.

Method 3,

The UE _{O = max (/(.),/ w, ...} , / (_ 1) c) calculating the number of desired transmission on PUSCH coded modulation symbols Q _{CS [,} UE according to a corresponding coding scheme respectively The bit sequence of the CSI information of the C downlink cells (or component carriers) to be reported is encoded by ₀ , ₀ , where the encoded target length of the CSI information of each downlink cell (or component carrier) is 0^*Q _m , cascading the C coded sequences in a predefined order to obtain the encoded CSI information.

Method 4,

The UE calculates the number of coded modulation symbols required to be transmitted on the PUSCH according to the CSI information of each downlink cell (or component carrier) to be reported, and the UE separately reports the C downlinks to be reported according to the corresponding coding mode. The bit sequence [ο^ω, ο^ω, ₀ ^^] of the CSI information of the cell (or component carrier) is encoded, wherein the target length of the CSI information of each downlink cell (or component carrier) is ρ; ^) * ^ , the C coded sequences are concatenated in a predefined order to obtain the encoded CSI information.

The predefined order refers to any one of the following sequences:

(1) cell index order;

(2) cell priority order;

(3) a primary primary cell and a secondary secondary cell, and if there are multiple secondary component carriers, multiple secondary components are carried The order of the waves according to the component carrier index;

(4) The first periodic CSI, and then the non-periodic CSI; or, the non-periodic CSI, the periodic CSI, and if there are multiple downlink component carriers that need to report periodic CSI information or aperiodic CSI information, report periodic CSI information or aperiodic The sequence of the component carrier index is further selected between the plurality of downlink component carriers of the CSI information.

For the CQI/PMI information, the corresponding coding method is: When / ^{ce /PM} <= N, the Reed-Muller code is used; when N < l ^{CQ1, pm} <= M咬 Use the tail-biting convolutional code (TBCC code), when ">M, use Turbo code, M, N is a fixed value agreed by the base station and the terminal, and N <M;

Alternatively, when l ^CQI ' ^PM <= N , use Reed-Muller mode; l ^CQ > N, use TBCC code, N is a fixed value agreed by the base station and the terminal.

Wherein, the length of the pre-encoding bit sequence is; and if the length of the bit sequence is greater than 11 bits, a cyclic redundancy check of length 8 is performed.

The CSI information refers to periodic CSI information and/or aperiodic CSI information of multiple downlink cells (or component carriers) that need to be transmitted.

If periodic CSI and aperiodic CSI of different downlink cells (or component carriers) are not allowed to be reported at the same time, the CSI information refers to aperiodic CSI information, that is, only aperiodic CSI information is transmitted at this time.

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other. Embodiment 1: It is assumed that the UE needs to transmit the aperiodic CQI/PMI information of the downlink cell (or component carrier) DL CC#0 on the PUSCH of the uplink cell (or component carrier) UL CC#0.

], the non-period of the downlink cell (or component carrier) DL CC#1 CQI/PMI information [ ₀ . ('■)] and the aperiodic CQI/PMI information of the downlink cell (or component carrier) DL CC#2 [o ^PM (o ¹ ( ... , o ^M ] and data information without transmitting other uplink control signaling. , is the length of the bit sequence of the CQI/PMI information that needs to be reported by the downlink cell (or component carrier). Then the UE obtains the encoded CQI/PMI information according to the corresponding manner, and encodes the encoded CQI/PMI information and the encoded The data is interleaved and then transmitted on the PUSCH. The CQI/PMI information obtained by the UE according to the corresponding manner means that the encoded CQI/PMI information can be obtained by any one of the following methods: Mode 1: The UE will need to be reported downlink cell (or component carrier) DL CC # aperiodic 0 of CQI / PMI information _[0., downlink cell (or component carrier) DL CC # aperiodic 1 of CQI / PMI information _[0] and a downlink cell (or component carrier)

Aperiodic CQI/PMI information for DL CC#2 [ ₀ . ] According to a predefined order cascade, to obtain a bit sequence before encoding, modulation and coding according to the number of symbols to obtain the bit length of a sequence O = / () calculates the required transmission on PUSCH _2; then according to the corresponding The encoding method encodes the bit sequence to obtain encoded CQI/PMI information, wherein the encoded target length is Q^'QM; and mode 2: UE according to O = 3.ma _X (/ _{(.), / ( 1} ),...,/( ₂ )) Calculate the number ₂ of coded modulation symbols required for transmission on the PUSCH, and respectively set the CQI/PMI information of the DL CC#0 to be reported according to the corresponding coding mode. CQI/PMI information for DL CC#1

] , and the CQI/PMI information of DL CC#2 [ ₀ . /layer ⁽ 0, ₀ / layer ⁽ o, layer "] is encoded, where the encoded target length of the CQI/PMI information of each DL CC is, and the three encoded sequences are followed.

Pre-defined sequential cascading to obtain encoded CQI/PMI information; Mode 3: The UE is calculated according to 0 = ₁ ^ / (.), / ( _{1 2} ))? The number of coded modulation symbols required for transmission on the 801 is ₂ , and the CQI/PMI information of the DL CC#0 that needs to be reported by the UE according to the corresponding coding mode, CQI/PMI information of the DL CC#1

And CQI/PMI information for DL CC#2

Encoding, wherein the encoded target length of the CQI/PMI information of each DL CC is ₂ Q _m , and the three encoded sequences are concatenated in a predefined order to obtain the encoded CQI/PMI information;

Manner 4: The UE calculates the CQI/PMI information of the DL CC#0 to be reported, and the CQI/PMI information of the DL CC#1 according to O = / _w (z=0, 1, 2).

] and DL CC#2 CQI/PMI information [o ₀ ^ceilPM(i o^ ^IIPM(i ...,o^ ⁽ⁱ⁾ ]] The number of coded modulation symbols required for transmission on PUSCH ^3⁄4 _J(i) The UE encodes the CQI/PMI information of the three DL CCs that need to be reported according to the corresponding coding manner, where the target length of the CQI/PMI information of each DL CC is <^ _CQm -Q _m , The three encoded sequences are concatenated in a predefined order to obtain the encoded CQI/PMI information.

Wherein, the predefined order refers to any one of the following sequences:

(1) Cell index order;

(2) cell priority order;

(3) a primary primary cell and a secondary secondary cell, and if there are multiple secondary component carriers, the multiple secondary component carriers are indexed according to the component carrier index;

(4) First periodic CSI, and then non-periodic CSI; or, non-periodic CSI, and periodic CSI, and if there are multiple downlink component carriers that need to report periodic CSI information or aperiodic CSI information, report periodic CSI information or aperiodic The sequence of the component carrier index is further selected between the plurality of downlink component carriers of the CSI information.

The UE is encoded in the following manner:

When / ^{ce /PM} <=N, use the Reed-Muller method; when N</ ^ce "TM <=M, use the tail-biting convolutional code (TBCC code) In the mode, when / ^C2 " ^PM >M, the method of using the Turbo code, where M, N is a fixed value agreed by the base station and the terminal, and N <M; Or, when l ^CQllPM <= N, in the manner of Reed-Muller; /> N, 釆 TBCC code, N is a fixed value agreed by the base station and the terminal.

Wherein, it is the length of the pre-encoding bit sequence; if the length of the bit sequence is greater than 1 1 bit, a cyclic redundancy check of length 8 is performed.

Embodiment 2: It is assumed that the UE needs to transmit the RI information of the downlink cell (or component carrier) DL CC#0 on the PUSCH of the uplink cell (or component carrier) UL CC#0. [..., ^] Downstream cell (or component carrier) )

The Ri information and data information of DL ca do not need to send other uplink control signaling.

Then, the UE obtains the encoded RI information according to the corresponding manner, interleaves the encoded RI information and the encoded data, and then transmits the signal on the PUSCH. Where (ι=0, 1) is the length of the bit sequence of the RI information that needs to be reported by the downlink cell (or component carrier). The RI information obtained by the UE according to the corresponding manner is that the encoded RI information can be obtained by any one of the following methods: Mode 1: The RI information of the DL CC #0 that the UE needs to report is reported [of And the RI information of the DL CC#1 [concatenated in a predefined order to obtain a bit sequence before encoding, and calculate the number of coded modulation symbols required for transmission on the PUSCH according to the obtained bit sequence length 0 = ^^, according to the corresponding The coding method encodes the bit sequence to obtain the encoded RI information, wherein the encoded target length is ^·Q _m ; Mode 2: The UE calculates the transmission on the PUSCH according to 0 = 2 · η3⁄4 _χ ^ ^; The number of coded modulation symbols UE will respectively report the RI information [of ..., of the DL CC #0 to be reported according to the corresponding coding mode. ;^] and DL CC#1 RI information is encoded, where each DL The encoded target length of the CC RI information is, or, after 2 encodings

2

The sequence is concatenated in a predefined order to obtain the encoded RI information;

Manner 3: The UE calculates the number of coded modulation symbols required for transmission on the PUSCH according to 0 = maxiN^ , ), and the UE separately reports the RI information of the DL CC#0 that needs to be reported according to the corresponding coding mode. ...,. . ] and RI information of DLCC#1 [. ...,. Encoding is performed, wherein the encoded target length of the RI information of each DLCC is Q _m , and the two encoded sequences are concatenated in a predefined order to obtain the encoded RI information;

Manner 4: The UE calculates the RI information of the DLCC#0 to be reported, [...,^] and the RI information of the CC#1 according to O = N (= 0, l) [ ..., ^:! in? !^^! The number of coded modulation symbols required for transmission on the ^^..), the UE separately reports the 2 DLs to be reported according to the corresponding coding mode.

The RI information of the CC is encoded, where the target length of the RI information of each DL CC is U, and the two encoded sequences are concatenated in a predefined order to obtain the encoded RI information. The predefined order refers to any one of the following sequences:

(1) cell index order;

(2) cell priority order;

In addition, the embodiment of the present invention further provides a transmitting terminal of channel state information. As shown in FIG. 2, the terminal in this embodiment mainly includes an encoding computing unit, an interleaving unit, and a transmitting unit, where: the encoding computing unit is configured to And encoding, by using a predetermined coding calculation manner, CSI information of one or more downlink cells that need to be reported, to obtain coded CSI information;

The interleaving unit is configured to: after encoding the CSI information, the encoded data, and/or the encoded After the other uplink control information is interleaved, it is output to the transmission unit;

The transmission unit is configured to: transmit data output by the interleaving unit on a PUSCH. The coding calculation unit is configured to obtain the coded CSI information according to one of the following coding calculation modes:

In the first method, the CSI information of the multiple downlink cells that need to be reported is cascaded to obtain a bit sequence before encoding; the required number of coded modulation symbols is obtained according to the length of the bit sequence, and the corresponding coding mode is used according to the corresponding coding mode. The bit sequence is encoded, and the rate is matched to the encoded target length to obtain the encoded CSI information; wherein the encoded target length is equal to the number of the coded modulation symbols multiplied by the modulation order;

In the second mode, the number of downlink cells in which the CSI information needs to be reported is multiplied by the maximum number of bits in the bit sequence of the CSI information that needs to be reported by each downlink cell, to obtain the required number of coded modulation symbols; The CSI information that needs to be reported in each downlink cell is encoded, and the rate is matched to the encoded target length, and the encoded sequence is cascaded to obtain the encoded CSI information. The target length after the information encoding is equal to the number of the coded modulation symbols multiplied by the modulation order, and then divided by the number of the downlink cells, and then rounded up, or the target of the CSI information that needs to be reported by each downlink cell is encoded. The length is equal to the number of the coded modulation symbols divided by the number of the downlink cells, and then multiplied by the modulation order and then rounded up; mode 3, according to the maximum number of bits in the bit sequence of the CSI information that each downlink cell needs to report Obtaining the required number of coded modulation symbols; respectively, according to the corresponding coding mode, each downlink cell needs The reported CSI information is encoded, the rate is matched to the encoded target length, and the encoded sequences are concatenated to obtain the encoded CSI information. The encoded target length is equal to the coded modulation symbol. Multiply the number by the modulation order;

In the fourth method, the number of the required coded modulation symbols is obtained according to the number of bits of the bit sequence of the CSI information that is to be reported by each downlink cell, and the CSI information that needs to be reported by each downlink cell is separately coded according to the corresponding coding mode. The rate is matched to the encoded target length, and the encoded sequence is concatenated to obtain the encoded CSI information. The encoded target length is equal to the number of the coded modulation symbols multiplied by the modulation order.

Wherein, the encoding calculation unit is further configured to pair the plurality according to any one of the following sequences The CSI information of the downlink cells is cascaded, or the coded sequences are cascaded: a cell index sequence;

Cell priority order;

The encoding calculation unit is further configured to obtain the encoded CSI information by using any one of the following encoding modes:

The first one: I <= Ν , Re in Reed-Muller mode; when N < / ^ce "TM <=M 釆 TBCC code, when / ^C2 " ^PM > M, T use Turbo code, Wherein, M, N are fixed values fixed by the base station and the terminal, and N<M;

The second type: I <= Ν , using the Reed-Muller code; / ^C2 " ^PM > N, using the TBCC code, where N is a fixed value agreed by the base station and the terminal;

Wherein, the length of the pre-encoding bit sequence. The encoding calculation unit is further configured to: perform a cyclic redundancy check of length 8 when the length of the bit sequence is greater than 11 bits.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. The present invention may be embodied in various other embodiments without departing from the spirit and scope of the invention. Various changes and modifications may be made to the invention, and such changes and modifications are intended to be included within the scope of the appended claims.

Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device for execution by the computing device, and And in some cases, the steps shown or described may be performed in a different order than that herein, or they may be separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof may be fabricated into a single integrated circuit. Module to achieve. Thus, the invention is not limited to any specific combination of hardware and software.

Industrial applicability

Using the above solution, the problem of channel state information transmission on the physical uplink shared channel in the carrier aggregation scenario is effectively solved. Therefore, the present invention has strong industrial applicability.

Claims

Claim

A method for transmitting channel state information, comprising:

In a carrier aggregation scenario, channel state information (CSI) of multiple downlink cells that need to be reported is encoded in a predetermined manner to obtain coded CSI information;

2. The transmitting method according to claim 1, wherein the step of encoding the CSIs of the plurality of downlink cells that need to be reported according to a predetermined manner includes:

The CSI information of the plurality of downlink cells that need to be reported is cascaded to obtain a bit sequence before encoding. The bit sequence is encoded, and the rate is matched to the encoded target length to obtain the encoded CSI information.

3. The method of transmitting according to claim 2, the method further comprising:

Obtaining the encoded target length according to the number of coded modulation symbols and the modulation order, where

The transmitting method according to claim 1, wherein the step of encoding the CSIs of the plurality of downlink cells that need to be reported according to a predetermined manner includes:

5. The transmitting method according to claim 4, further comprising:

6. The transmitting method according to claim 4, further comprising:

Obtaining the encoded target length according to the number of the coded modulation symbols and the modulation order; wherein, the number of the coded modulation symbols is determined according to CSI information that needs to be reported by each downlink cell. The maximum number of bits is calculated.

7. The transmitting method according to claim 4, further comprising:

The transmitting method according to claim 5, wherein the step of obtaining the encoded target length according to the number of coded modulation symbols, the modulation order, and the number of downlink cells that need to report CSI information includes:

Multiplying the number of the coded modulation symbols by the modulation order, dividing by the number of downlink cells that need to report CSI information, and then rounding up to obtain the encoded target length; or

The number of the coded modulation symbols is divided by the number of downlink cells that need to report CSI information, multiplied by the modulation order, and rounded up to obtain the coded target length.

9. The transmitting method according to claim 3, 6 or 7, wherein the step of obtaining the encoded target length according to the number of coded modulation symbols and the modulation order comprises:

10. The transmitting method according to claim 2 or 4, wherein

The transmitting method according to claim 2 or 4, wherein cascading CSI information of a plurality of downlink cells that need to be reported or cascading the encoded sequences includes:

Cascade in any of the following sequences:

Cell index order;

Cell priority order;

The first periodic CSI, and then the non-periodic CSI; or, the non-periodic CSI, the periodic CSI, and if there are multiple downlink cells that need to report periodic CSI information or aperiodic CSI information, report the periodic CSI The information or the a plurality of downlink cells of the aperiodic CSI information are in the order of the cell index.

The transmitting method according to claim 2 or 4, wherein, when the CSI information is channel quality indication (CQI) and/or precoding matrix indication (PMI) information, the bit sequence before encoding is performed. The step of encoding or separately encoding the bit sequence of the CSI information that each downlink cell needs to report includes:

The corresponding bit sequence is encoded in one of two ways:

The second type: I <= Ν , using the Reed-Muller mode; / ^C2 " ^PM > N, using the TBCC code mode, where N is a fixed value agreed by the base station and the terminal;

Where is the length of the pre-encoding bit sequence.

13. The transmitting method of claim 12, the method further comprising:

A transmitting terminal for channel state information is applied to a carrier aggregation system, where the transmitting terminal includes an encoding calculation unit, an interleaving unit, and a transmission unit, where:

The transmission unit is configured to: transmit data output by the interleaving unit on a physical uplink shared channel (PUSCH).

The transmitting terminal according to claim 14, wherein the encoding calculation unit is configured to encode the CSI information of the plurality of downlink cells that need to be reported according to any one of the following manners to obtain the encoded CSI information:

In the first method, the CSI information of the multiple downlink cells that need to be reported is cascaded to obtain the code. a bit sequence; encoding the bit sequence before encoding, and matching the rate to the encoded target length to obtain encoded CSI information;

The transmitting terminal according to claim 15, wherein the encoding calculation unit is further configured to: obtain the required coded modulation according to the length of the bit sequence when the encoded CSI information is obtained according to the manner a number of symbols, multiplying the number of the coded modulation symbols by a modulation order to obtain the encoded target length;

When the coded CSI information is obtained according to the mode 2, the number of downlink cells that need to report the CSI information is multiplied by the maximum number of bits in the bit sequence of the CSI information that each downlink cell needs to report, to obtain the required code modulation. Multiplying the number of the coded modulation symbols by the modulation order, dividing by the number of the downlink cells, and then rounding up; or dividing the number of the coded modulation symbols by the downlink cell The number is multiplied by the modulation order and then rounded up to obtain the target length of the CSI information to be reported by each downlink cell; or

The transmitting terminal according to claim 16, wherein the encoding calculation unit is configured to cascade CSI information of the plurality of downlink cells or perform encoding on each encoded sequence according to any one of the following sequences: Cascade:

Cell index order;

Cell priority order;

a primary primary cell, a secondary secondary cell, and if there are multiple secondary cells, the multiple secondary cells are in the order of the cell index; The first periodic CSI, and then the non-periodic CSI information; or the non-periodic CSI, and the periodic CSI, and if there are multiple downlink cells that need to report periodic CSI information or aperiodic CSI information, report periodic CSI information or aperiodic CSI information. The downlink cells are then in the order of the cell index.

The transmitting terminal according to any one of claims 15-17, wherein, when the CSI information is CQI and/or PMI information, the encoding calculation unit is further configured to follow any of the following two modes. One:

Wherein, the length of the pre-encoding bit sequence.

The transmitting terminal according to claim 18, wherein the encoding calculation unit is further configured to: