CN102075293A - Method for sending channel state information and terminal - Google Patents
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Abstract
The invention discloses a method for sending channel state information and a terminal. The method comprises the following steps of: encoding the channel state information (CSI), which needs to be reported, of a plurality of downlink cells according to a preset encoding calculating mode in carrier aggregation scene to obtain the encoded CSI information; interleaving the encoded CSI information, encoded data and/or other kinds of encoded uplink control information, and transmitting on a physical uplink sharing channel. By the method, the problem of sending the channel state information on the physical uplink sharing channel (PUSCH) under the carrier aggregation scene is solved effectively.
Description
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
In a Long Term Evolution (LTE) system, the uplink control signaling to be transmitted includes an Acknowledgement/negative Acknowledgement (ACK/NACK) message and Channel State Information (CSI) reflecting a downlink physical Channel State. CSI has mainly the following three forms: a channel Quality Indication (CQI for short), a precoding Matrix Indication (PMI for short), and a Rank Indication (RI for short).
In the LTE system, the ACK/NACK response message is transmitted in a format1/1 a/1b (PUCCH format1/1a1/b) on a Physical Uplink Control Channel (PUCCH). If a terminal (User Equipment, UE for short) needs to send Uplink data, the Uplink data is transmitted on a Physical Uplink Shared Channel (PUSCH for short). The reported CSI may be periodic or aperiodic. The specific feedback mode of CSI is shown in table 1 below:
table 1 uplink physical channels corresponding to periodic and aperiodic reporting times
| Scheduling modes | Periodic CSI reporting channel | Aperiodic CSI reporting channel |
| Frequency non-selectivity | PUCCH | |
| Frequency selectivity | PUCCH | PUSCH |
As shown in table 1, if the UE does not need to send uplink data, the CSI reported periodically is transmitted in a format2/2a/2b (PUCCH format2/2a/2b) on the PUCCH. When UE needs to send uplink data, CSI reported periodically is transmitted on a PUSCH; the aperiodic reported CSI is transmitted only on PUSCH.
A schematic diagram of uplink control signaling transmitted on the PUSCH is shown in fig. 1. The base station schedules a certain UE to transmit a PUSCH through Uplink grant (UL grant for short) signaling. The uplink scheduling grant signaling may be sent to the scheduled UE by a Physical Downlink Control Channel (PDCCH) having a Downlink Control Information (DCI) format 0(DCI format 0). Wherein, 1 bit in the DCI format0 is used to trigger aperiodic CSI reporting, and if the UE detects a PDCCH with DCI format0 that belongs to the UE, the UE sends a PUSCH according to a UL grant contained therein. And if the UE detects that the 1 bit triggering the aperiodic CSI report in the DCI format0 is '1', sending the aperiodic CSI report in the PUSCH scheduled by the DCI format 0.
The coding process when CSI (including periodic CSI and aperiodic CSI) is transmitted on PUSCH mainly includes: first, the number Q of code modulation symbols required is calculatedCQI′，QRI'; then, channel coding and rate matching are carried out until the target length Q is metCQI＝QCQI′*Qm，QRI＝QRI′*QmUntil now. Wherein QmIs the modulation order of the transmission block corresponding to the PUSCH; and then the coded CSI information, the coded data and/or other coded uplink control information are subjected to channel interleaving and then transmitted.
In order to meet the requirements of the International telecommunications union-Advanced (ITU-Advanced for short), a Long Term Evolution-Advanced (Long Term Evolution-Advanced, LTE-a) system as an LTE Evolution standard needs to support a larger system bandwidth (up to 100MHz) and needs to be backward compatible with the existing standard of LTE. On the basis of the existing LTE system, a larger bandwidth can be obtained by combining bandwidths of the LTE system, and this technology is called Carrier Aggregation (CA) technology. The CA technology can improve the spectrum utilization rate of the IMT-Advance system, relieve the shortage of spectrum resources and further optimize the utilization of the spectrum resources. The LTE system bandwidth of Carrier aggregation may be regarded as Component Carrier frequencies (spectrum for short), each Component Carrier frequency may also be referred to as a Cell (Cell), that is, one spectrum may be aggregated by n Component Carrier frequencies. One resource of R10UE is composed of n cells (or component carrier frequencies) in the frequency domain, where one cell is called a Primary cell or Primary component carrier (Primary cel1), and the rest of the cells are called secondary cells or secondary component carriers (secondary).
At present, the conclusion about aperiodic CSI reporting in a carrier aggregation scenario is as follows:
if the user search space is based, 2 bits are used for triggering aperiodic CSI reporting in a UL grant: wherein "00" represents that aperiodic CSI reporting is not triggered; "01" represents triggering the aperiodic CSI report of the downlink cell (or component carrier) connected with the uplink cell SIB-2 (second type system information block); '10' triggers the aperiodic CSI reporting of which downlink cells (or component carriers) through RRC signaling configuration; "11" triggers aperiodic CSI reporting of which downlink cells (or component carriers) through RRC signaling configuration;
b, if the ue is based on the common search space, 1 bit in the UL grant is used to trigger aperiodic CSI reporting, where '0' represents that aperiodic CSI reporting is not triggered, and '1' represents that aperiodic CSI reporting is triggered, but it needs to be further discussed which aperiodic CSI reporting of which downlink cell (or component carrier) is triggered, and the triggered aperiodic CSI reports of one or more downlink cells (or component carriers) are transmitted on the PUSCH corresponding to the UL grant.
The conclusion for periodic CSI reporting is: the parameters required by reporting of each downlink cell (or component carrier) are configured independently, and when aperiodic CSI reporting is not triggered and PUSCH transmission exists on a main cell (or component carrier), periodic CSI is reported to PUSCH transmission on the main cell (or component carrier); when there is no PUSCH transmission on the primary cell (or component carrier), and there is a PUSCH transmission on other uplink cells (or component carriers), the specific selection of which cell (or component carrier) needs further discussion.
In summary, the following technical problems exist in the prior art: in an LTE-a carrier aggregation scenario, there is a scenario in which CSI of multiple downlink cells (or component carriers) is sent on a PUSCH, but a scheme of how to send CSI information on a PUSCH when CSI of multiple cells (or component carriers) is reported has not been proposed at present, so that transmission of CSI information on a PUSCH under carrier aggregation cannot be achieved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method and a terminal for sending channel state information, and the problem that the channel state information is sent on a physical uplink shared channel in a carrier aggregation scene is solved.
To solve the above technical problems, the present invention provides a method for transmitting channel state information,
under a carrier aggregation scene, coding Channel State Information (CSI) of a plurality of downlink cells to be reported according to a preset coding calculation mode to obtain coded CSI information;
and interleaving the coded CSI information, the coded data and/or the coded other uplink control information, and transmitting the interleaved CSI information on a Physical Uplink Shared Channel (PUSCH).
Further, the predetermined encoding calculation method specifically includes:
cascading CSI information of a plurality of downlink cells to be reported to obtain a bit sequence before coding; and coding the bit sequence according to a corresponding coding mode, and performing rate matching to the coded target length to obtain the coded CSI information.
Furthermore, the target length after coding is obtained according to the number of coded modulation symbols and the modulation order, wherein the number of coded modulation symbols is calculated according to the length of the bit sequence.
Further, the predetermined encoding calculation method specifically includes:
and respectively coding the bit sequence of the CSI information to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequences to obtain the coded CSI information.
Furthermore, the coded target length is obtained according to the number of coded modulation symbols, the modulation order and the number of downlink cells needing to report the CSI information; the number of the coded modulation symbols is calculated by multiplying the number of downlink cells needing to report the CSI information by the maximum bit number in the CSI information needing to be reported by each downlink cell.
Furthermore, the coded target length is obtained according to the number of coded modulation symbols and the modulation order, wherein the number of coded modulation symbols is calculated according to the maximum bit number in the CSI information to be reported by each downlink cell.
Furthermore, the coded target length is obtained according to the number of coded modulation symbols and the modulation order, wherein the number of coded modulation symbols is calculated according to the bit number of the CSI information that needs to be reported by each downlink cell.
Furthermore, the target length after coding is obtained according to the number of coded modulation symbols, the modulation order, and the number of downlink cells needing to report CSI information, and refers to one of the following ways:
the coded target length is equal to the number of coded modulation symbols multiplied by the modulation order, and is divided by the number of downlink cells needing to report CSI information and then is rounded upwards;
or, the target length after coding is equal to the number of coded modulation symbols divided by the number of downlink cells needing to report the CSI information, multiplied by the modulation order and then rounded up.
Furthermore, the target length after coding is obtained according to the number of coded modulation symbols and the modulation order, and is as follows: and the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order.
Still further, the CSI information includes periodic CSI information and/or aperiodic CSI information.
Further, when the CSI information of the plurality of downlink cells is concatenated or when the coded sequences are concatenated, the CSI information of the plurality of downlink cells is concatenated according to one of the following sequences:
a cell index order; or,
a cell priority order; or,
a main cell is firstly carried out, then a secondary cell is carried out, and if a plurality of secondary cells exist, the plurality of secondary cells are arranged according to the sequence of cell indexes; or,
periodic CSI is firstly carried out, and then aperiodic CSI is carried out; or, aperiodic CSI and aperiodic CSI are firstly reported, and if there are multiple downlink cells that need to report periodic CSI information or aperiodic CSI information, the multiple downlink cells that report periodic CSI information or aperiodic CSI information are then according to the order of cell indexes.
Further, for Channel Quality Indication (CQI) and/or Precoding Matrix Indication (PMI) information, the corresponding coding mode refers to one of the following two modes:
when l isCQI/PMIN, using Reed-Muller code (Reed-Muller); when N is less than lCQI/PMIWhen M adopts tail-biting convolutional code (TBCC code), the code isCQI/PMIWhen the number is more than M, a Turbo code mode is adopted, M and N are fixed values appointed by the base station and the terminal, and N is less than M;
or, when lCQI/PMIN, adopting a Reed-Muller mode; lCQI/PMIWhen the number is more than N, adopting a TBCC code mode, wherein N is a fixed value appointed by the base station and the terminal;
wherein lCQI/PMIIs the length of the pre-coding bit sequence.
Further, if the length of the bit sequence is greater than 11 bits, a cyclic redundancy check of length 8 is performed.
The invention also provides a sending terminal of the channel state information, which is applied to a carrier aggregation system, and the terminal comprises:
the coding calculation unit is used for coding the CSI information of one or more downlink cells to be reported according to a preset coding calculation mode to obtain coded CSI information;
the interleaving unit is used for interleaving the coded CSI information, the coded data and/or the coded other uplink control information and outputting the interleaved CSI information, the coded data and/or the coded other uplink control information to the transmission unit;
and the transmission unit is used for transmitting the data output by the interleaving unit on a PUSCH.
Further, the encoding calculation unit is configured to perform one of the following predetermined encoding calculation methods:
the method comprises the steps that firstly, CSI information of a plurality of downlink cells needing to be reported is cascaded to obtain a bit sequence before coding; obtaining the number of required code modulation symbols according to the length of the bit sequence, coding the bit sequence according to a corresponding coding mode, and obtaining coded CSI information by rate matching to the coded target length; the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order;
in the second mode, the number of the required code modulation symbols is obtained according to the number of the downlink cells needing to report the CSI information multiplied by the maximum bit number in the bit sequence of the CSI information needing to be reported by each downlink cell; coding the CSI to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequence to obtain the coded CSI; the target length of each downlink cell after the CSI information coding which needs to be reported is equal to the number of the coded modulation symbols multiplied by the modulation order, and then is divided by the number of the downlink cells to be rounded up, or the target length of each downlink cell after the CSI information coding which needs to be reported is equal to the number of the coded modulation symbols divided by the number of the downlink cells, and then is multiplied by the modulation order to be rounded up;
obtaining the number of the required code modulation symbols according to the maximum bit number in the bit sequence of the CSI information to be reported by each downlink cell; coding the CSI information to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequences to obtain the coded CSI information; the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order;
in the fourth mode, the number of the required coded modulation symbols is respectively obtained according to the bit number of the bit sequence of the CSI information to be reported by each downlink cell; coding the CSI to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequence to obtain the coded CSI; and the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order.
Further, the code calculating unit is further configured to cascade CSI information of the plurality of downlink cells according to one of the following sequences, or cascade each coded sequence:
a cell index order; or,
a cell priority order; or,
a main cell is firstly carried out, then a secondary cell is carried out, and if a plurality of secondary cells exist, the plurality of secondary cells are arranged according to the sequence of cell indexes; or,
periodic CSI is firstly carried out, and then aperiodic CSI is carried out; or, aperiodic CSI and aperiodic CSI are firstly reported, and if there are multiple downlink cells that need to report periodic CSI information or aperiodic CSI information, the multiple downlink cells that report periodic CSI information or aperiodic CSI information are then according to the order of cell indexes.
Furthermore, the coding calculation unit is further configured to, for CQI and/or PMI information, refer to one of the following two coding schemes according to the corresponding coding scheme:
when l isCQI/PMIN, adopting a Reed-Muller mode; when N is less than lCQI/PMIWhen M adopts TBCC code mode, when lCQI/PMIWhen the number is more than M, a Turbo code mode is adopted, M and N are fixed values appointed by the base station and the terminal, and N is less than M;
or, when lCQI/PMIIf N is less than N, a Reed-Muller code mode is adopted; lCQI/PMIWhen the number is more than N, adopting a TBCC code mode, wherein N is a fixed value appointed by the base station and the terminal;
wherein lCQI/PMIIs the length of the pre-coding bit sequence.
Furthermore, the code calculation unit is further configured to perform a cyclic redundancy check with a length of 8 if the length of the bit sequence is greater than 11 bits.
By adopting the scheme of the invention, the problem of sending the channel state information on the physical uplink shared channel in the carrier aggregation scene is effectively solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic diagram of uplink data multiplexing of uplink control signaling in an LTE system;
fig. 2 is a schematic diagram illustrating a configuration of a transmitting terminal of channel state information according to an embodiment of the present invention.
Detailed Description
The main objective of the present invention is to provide a method for transmitting channel state information on a physical uplink shared channel, in which a UE obtains coded CSI information according to a predetermined coding calculation method, interleaves the coded CSI information and/or coded other uplink control information and/or coded data, and transmits the interleaved CSI information and/or coded other uplink control information and/or coded data on a PUSCH.
Further, the UE obtains the coded CSI information according to a predetermined coding calculation method, specifically according to one of the following methods:
in a first way,
UE reports CSI information of downlink cells (or component carriers) to be reported
Cascading according to a predefined sequence to obtain a bit sequence before coding; according to the bit sequence length before coding
Calculating the number Q of code modulation symbols required for transmission on PUSCHCST' coding the bit sequence according to the corresponding coding mode to obtain the coded CSI information, wherein the target length after coding is QCSI′*Qm。
Wherein, i is 0., C-1, C is the number of downlink cells (or component carriers) that need to report CSI information,
is the bit sequence of CSI information to be reported by a downlink cell (or component carrier) i(i)Is the length of the bit sequence of the CSI information that needs to be reported by the downlink cell (or component carrier) i.
The second way,
UE according to O ═ C × max (l)(0)，l(1)，...，l(C-1)) Calculating the number Q of coding modulation symbols required by transmitting the reported CSI information on the PUSCHCSI' UE respectively reports the bit sequence of the CSI information of C downlink cells (or component carriers) to be reported according to the corresponding coding mode
Coding, wherein the target length after coding of the CSI information needing to be reported by each downlink cell (or component carrier) is
Or
And cascading the C coded sequences according to a predefined sequence to obtain the coded CSI information.
The third method,
UE according to O ═ max (l)(0)，l(1)，...，l(C-1)) Calculating the number Q of code modulation symbols required for transmission on PUSCHCSI' UE respectively reports the bit sequence of the CSI information of C downlink cells (or component carriers) to be reported according to the corresponding coding mode
Coding is carried out, wherein the target length after coding of the CSI information of each downlink cell (or component carrier) is QCSI′*QmAnd cascading the C coded sequences according to a predefined sequence to obtain the coded CSI information.
The fourth way,
The UE respectively calculates the number Q of coding modulation symbols required by the transmission of the CSI information of each downlink cell (or component carrier) required to be reported on the PUSCH according to the O ═ l (i)CSI(i)' the UE respectively reports the bit sequences of the CSI information of the C downlink cells (or component carriers) to be reported according to the corresponding coding modesCoding is carried out, wherein the target length after CSI (channel state information) coding of each downlink cell (or component carrier) is QCSI(i)′*QmAnd cascading the C coded sequences according to a predefined sequence to obtain the coded CSI information.
Still further, the predefined order refers to one of the following ways:
(1) a cell index order;
(2) a cell priority order;
(3) a primary cell and a secondary cell are carried out, and if a plurality of secondary component carriers exist, the plurality of secondary component carriers are indexed according to the component carriers;
(4) periodic CSI is firstly carried out, and then aperiodic CSI is carried out; or, aperiodic CSI and aperiodic CSI are firstly reported, and if there are multiple downlink component carriers that need to report periodic CSI information or aperiodic CSI information, the multiple downlink component carriers that report periodic CSI information or aperiodic CSI information are then reported according to the sequence of component carrier indexes.
Furthermore, for the CQI/PMI information, the corresponding coding scheme is: when l isCQI/PMIWhen N is less than N, a Reed-Muller code (Reed-Muller) mode is adopted; when N is less than lCQI/PMIWhen M adopts tail-biting convolutional code (TBCC code), the code isCQI/PMIWhen the number is more than M, a Turbo code mode is adopted, M and N are fixed values appointed by the base station and the terminal, and N is less than M;
orWhen l isCQI/PMIN, adopting a Reed-Muller mode; lCQI/PMIAnd when the number is more than N, adopting a TBCC code mode, wherein N is a fixed value appointed by the base station and the terminal.
Wherein lCQI/PMIIs the length of the pre-coding bit sequence;
and if the length of the bit sequence is more than 11 bits, performing a cyclic redundancy check with the length of 8.
The CSI information refers to periodic CSI information and/or aperiodic CSI information of a plurality of downlink cells (or component carriers) that need to be transmitted.
If the periodic CSI and the aperiodic CSI of different downlink cells (or component carriers) are not allowed to be reported simultaneously, the CSI information refers to aperiodic CSI information, that is, only aperiodic CSI information is sent at this time.
For the convenience of describing the present invention, the following detailed description will be made with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The first embodiment is as follows:
suppose 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
Aperiodic CQI/PMI information of downlink cell (or component carrier) DL CC #1
And aperiodic CQI/PMI information of downlink cell (or component carrier) DL CC #2
And data information, without sending other uplink control signaling. Wherein l(i)Is a downlink cell(or component carrier) i length of bit sequence of CQI/PMI information that needs to be reported. Then the UE obtains the encoded CQI/PMI information according to a corresponding mode, interleaves the encoded CQI/PMI information and the encoded data, and then transmits the interleaved CQI/PMI information and the encoded data on a PUSCH.
Specifically, the coded CQI/PMI information may be obtained by one of the following ways:
the UE reports the non-periodic CQI/PMI information of the DL CC #0 of the downlink cell (or the component carrier) to be reportedAperiodic CQI/PMI information of downlink cell (or component carrier) DL CC #1And aperiodic CQI/PMI information of downlink cell (or component carrier) DLCC #2
Cascading according to a predefined order to obtain a bit sequence before coding, and obtaining the length of the bit sequence before coding according to the obtained length
Calculating the number Q of code modulation symbols required for transmission on PUSCHCQI'; and coding the bit sequence according to the corresponding coding mode to obtain the coded CQI/PMI information, wherein the coded target length is Q'CQI*Qm；
Or, the UE may be configured to perform the UE operation according to O3 max (l)(0)，l(1)，...，l(2)) Calculating the number Q of code modulation symbols required for transmission on PUSCHCQI' separately reporting CQI/PMI information of DL CC #0 according to the corresponding coding mode
CQI/PMI information of DL CC #1And CQI/PMI information of DL CC #2
Encoding is performed, wherein the target length after encoding of CQI/PMI information of each DL CC is
Or,
cascading the 3 coded sequences according to a predefined sequence to obtain coded CQI/PMI information;
or the UE according to O ═ max (l)(0)，l(1)，...，l(2)) Calculating the number Q of code modulation symbols required for transmission on PUSCHCQI' the UE respectively reports the CQI/PMI information of the DL CC #0 to be reported according to the corresponding coding mode
CQI/PMI information of DL CC #1
And CQI/PMI information of DL CC #2
Encoding is performed, wherein the target length after encoding of CQI/PMI information per DL CC is Q'CQI*QmCascading the 3 coded sequences according to a predefined sequence to obtain coded CQI/PMI information;
or the UE is according to O ═ l(i)(i-0, 1, 2) calculating CQI/PMI information of DL CC #0 needing to be reported
CQI/PMI information of DL CC #1
And CQI/PMI information of DL CC #2
Number Q 'of code modulation symbols required for transmission on PUSCH'CQI(i)The UE respectively encodes CQI/PMI information of 3 DL CCs needing to be reported according to corresponding encoding modes, wherein the target length of the encoded CQI/PMI information of each DL CC is Q'CQI(i)*QmAnd the 3 coded sequences are cascaded according to a predefined sequence to obtain the coded CQI/PMI information.
Wherein, the predefined sequence refers to one of the following modes:
(1) a cell index order;
(2) a cell priority order;
(3) a primary cell and a secondary cell are carried out, and if a plurality of secondary component carriers exist, the plurality of secondary component carriers are indexed according to the component carriers;
(4) periodic CSI is firstly carried out, and then aperiodic CSI is carried out; or, aperiodic CSI and aperiodic CSI are firstly reported, and if there are multiple downlink component carriers that need to report periodic CSI information or aperiodic CSI information, the multiple downlink component carriers that report periodic CSI information or aperiodic CSI information are then reported according to the sequence of component carrier indexes.
For the CQI/PMI information, the corresponding coding mode is as follows: when l isCQI/PMIWhen N is less than N, a Reed-Muller code (Reed-Muller) mode is adopted; when N is less than lCQI/PMIWhen M adopts tail-biting convolutional code (TBCC code), the code isCQI /PMIWhen the number is more than M, a Turbo code mode is adopted, M and N are fixed values appointed by the base station and the terminal, and N is less than M;
or, when lCQI/PMIN, adopting a Reed-Muller mode; lCQI/PMIAnd when the number is more than N, adopting a TBCC code mode, wherein N is a fixed value appointed by the base station and the terminal.
Wherein lCQI/PMIIs the length of the pre-coding bit sequence; and if the length of the bit sequence is more than 11 bits, performing a cyclic redundancy check with the length of 8.
Example two:
suppose that the UE needs to transmit RI information of a downlink cell (or component carrier) DL CC #0 on the PUSCH of the uplink cell (or component carrier) UL CC #0
RI information of downlink cell (or component carrier) DL CC #1
And data information, without sending other uplink control signaling. Then the UE obtains the encoded RI information according to the corresponding method, interleaves the encoded RI information and the encoded data, and then sends the encoded RI information and the encoded data on the PUSCH. Wherein,
and (i ═ 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) i.
Specifically, the encoded RI information may be obtained by one of the following ways:
the UE reports the RI information of the DL CC #0 to be reported
And RI information of DL CC #1
Cascading according to a predefined sequence to obtain a bit sequence before coding, and obtaining the length of the bit sequence according to the obtained length
Calculating the number Q of code modulation symbols required for transmission on PUSCHRI' coding the bit sequence according to the corresponding coding mode to obtain the coded RI information, wherein the coding is carried outThe target length after the code is QRI′*Qm；
Or, the UE is according to
Calculating the number Q of code modulation symbols required for transmission on PUSCHRI' the UE respectively reports the RI information of the DL CC #0 to be reported according to the corresponding coding modes
And RI information of DL CC #1Encoding is performed, wherein the target length after encoding of RI information of each DLCC is
Or
Cascading the 2 coded sequences according to a predefined sequence to obtain coded RI information;
or, the UE is according to
Calculating the number Q of code modulation symbols required for transmission on PUSCHRI' the UE respectively reports the RI information of the DL CC #0 to be reported according to the corresponding coding modes
And RI information of DL CC #1
Encoding is performed, wherein the target length after encoding of RI information of each DL CC is QRI′*QmCascading the 2 coded sequences according to a predefined sequence to obtain coded RI information;
or, the UE is according to
Respectively calculating RI information of DL CC #0 to be reported
And RI information of DL CC #1
Number Q of code modulation symbols required for transmission on PUSCHRI(i)' the UE respectively encodes RI information of 2 DLCCs needing to be reported according to corresponding encoding modes, wherein the target length of the encoded RI information of each DL CC is QRI(i)′*QmAnd cascading the 2 coded sequences according to a predefined sequence to obtain the coded RI information.
Further, the following description is provided: the predefined order refers to one of the following ways:
(1) a cell index order;
(2) a cell priority order;
(3) a primary cell and a secondary cell are carried out, and if a plurality of secondary component carriers exist, the plurality of secondary component carriers are indexed according to the component carriers;
(4) periodic CSI is firstly carried out, and then aperiodic CSI is carried out; or, aperiodic CSI and aperiodic CSI are firstly reported, and if there are multiple downlink component carriers that need to report periodic CSI information or aperiodic CSI information, the multiple downlink component carriers that report periodic CSI information or aperiodic CSI information are then reported according to the sequence of component carrier indexes.
In addition, an embodiment of the present invention further provides a terminal for sending channel state information, as shown in fig. 2, the terminal of this embodiment mainly includes a coding calculation unit, an interleaving unit, and a transmission unit, where:
the coding calculation unit is used for coding the CSI information of one or more downlink cells to be reported according to a preset coding calculation mode to obtain coded CSI information;
the interleaving unit is used for interleaving the coded CSI information, the coded data and/or the coded other uplink control information and outputting the interleaved CSI information, the coded data and/or the coded other uplink control information to the transmission unit;
and the transmission unit is used for transmitting the data output by the interleaving unit on a PUSCH.
Further, the encoding calculation unit is configured to perform one of the following predetermined encoding calculation methods:
the method comprises the steps that firstly, CSI information of a plurality of downlink cells needing to be reported is cascaded to obtain a bit sequence before coding; obtaining the number of required code modulation symbols according to the length of the bit sequence, coding the bit sequence according to a corresponding coding mode, and obtaining coded CSI information by rate matching to the coded target length; the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order;
in the second mode, the number of the required code modulation symbols is obtained according to the number of the downlink cells needing to report the CSI information multiplied by the maximum bit number in the bit sequence of the CSI information needing to be reported by each downlink cell; coding the CSI to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequence to obtain the coded CSI; the target length of each downlink cell after the CSI information coding which needs to be reported is equal to the number of the coded modulation symbols multiplied by the modulation order, and then is divided by the number of the downlink cells to be rounded up, or the target length of each downlink cell after the CSI information coding which needs to be reported is equal to the number of the coded modulation symbols divided by the number of the downlink cells, and then is multiplied by the modulation order to be rounded up;
obtaining the number of the required code modulation symbols according to the maximum bit number in the bit sequence of the CSI information to be reported by each downlink cell; coding the CSI information to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequences to obtain the coded CSI information; the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order;
in the fourth mode, the number of the required coded modulation symbols is respectively obtained according to the bit number of the bit sequence of the CSI information to be reported by each downlink cell; coding the CSI to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequence to obtain the coded CSI; and the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order.
Further, the code calculating unit is further configured to cascade CSI information of the plurality of downlink cells according to one of the following sequences, or cascade each coded sequence:
a cell index order; or,
a cell priority order; or,
a main cell is firstly carried out, then a secondary cell is carried out, and if a plurality of secondary cells exist, the plurality of secondary cells are arranged according to the sequence of cell indexes; or,
periodic CSI is firstly carried out, and then aperiodic CSI is carried out; or, aperiodic CSI and aperiodic CSI are firstly reported, and if there are multiple downlink cells that need to report periodic CSI information or aperiodic CSI information, the multiple downlink cells that report periodic CSI information or aperiodic CSI information are then according to the order of cell indexes.
Furthermore, the coding calculation unit is further configured to, for CQI and/or PMI information, refer to one of the following two coding schemes according to the corresponding coding scheme:
when l isCQI/PMIN, adopting a Reed-Muller mode; when N <lCQI/PMIWhen M adopts TBCC code mode, when lCQI/PMIWhen the number is more than M, a Turbo code mode is adopted, M and N are fixed values appointed by the base station and the terminal, and N is less than M;
or, when lCQI/PMIIf N is less than N, a Reed-Muller code mode is adopted; lCQI/PMIWhen the number is more than N, adopting a TBCC code mode, wherein N is a fixed value appointed by the base station and the terminal;
wherein lCQI/PMIIs the length of the pre-coding bit sequence.
Furthermore, the code calculation unit is further configured to perform a cyclic redundancy check with a length of 8 if the length of the bit sequence is greater than 11 bits.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
Claims (18)
1. A method for transmitting channel state information, characterized in that,
under a carrier aggregation scene, coding Channel State Information (CSI) of a plurality of downlink cells to be reported according to a preset coding calculation mode to obtain coded CSI information;
and interleaving the coded CSI information, the coded data and/or the coded other uplink control information, and transmitting the interleaved CSI information on a Physical Uplink Shared Channel (PUSCH).
2. The method of claim 1,
the predetermined encoding calculation method specifically includes:
cascading CSI information of a plurality of downlink cells to be reported to obtain a bit sequence before coding; and coding the bit sequence according to a corresponding coding mode, and performing rate matching to the coded target length to obtain the coded CSI information.
3. The method of claim 2,
and the coded target length is obtained according to the number of coded modulation symbols and the modulation order, wherein the number of the coded modulation symbols is obtained by calculation according to the length of the bit sequence.
4. The method of claim 1,
the predetermined encoding calculation method specifically includes:
and respectively coding the bit sequence of the CSI information to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequences to obtain the coded CSI information.
5. The method of claim 4,
the coded target length is obtained according to the number of coded modulation symbols, the modulation order and the number of downlink cells needing to report CSI information; the number of the coded modulation symbols is calculated by multiplying the number of downlink cells needing to report the CSI information by the maximum bit number in the CSI information needing to be reported by each downlink cell.
6. The method of claim 4,
and the coded target length is obtained according to the number of coded modulation symbols and the modulation order, wherein the number of the coded modulation symbols is calculated according to the maximum bit number in the CSI information needing to be reported by each downlink cell.
7. The method of claim 4,
and the coded target length is obtained according to the number of coded modulation symbols and the modulation order, wherein the number of the coded modulation symbols is obtained by calculation according to the bit number of CSI information needing to be reported by each downlink cell.
8. The method of claim 5,
the coded target length is obtained according to the number of coded modulation symbols, the modulation order and the number of downlink cells needing to report the CSI information, and is one of the following modes:
the coded target length is equal to the number of coded modulation symbols multiplied by the modulation order, and is divided by the number of downlink cells needing to report CSI information and then is rounded upwards;
or, the target length after coding is equal to the number of coded modulation symbols divided by the number of downlink cells needing to report the CSI information, multiplied by the modulation order and then rounded up.
9. The method of claim 3, 6 or 7,
the target length after coding is obtained according to the number of coded modulation symbols and the modulation order: and the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order.
10. The method of claim 2 or 4,
the CSI information includes periodic CSI information and/or aperiodic CSI information.
11. The method of claim 2 or 4,
when the CSI information of the plurality of downlink cells is concatenated or when the coded sequences are concatenated, the following sequence is performed:
a cell index order; or,
a cell priority order; or,
a main cell is firstly carried out, then a secondary cell is carried out, and if a plurality of secondary cells exist, the plurality of secondary cells are arranged according to the sequence of cell indexes; or,
periodic CSI is firstly carried out, and then aperiodic CSI is carried out; or, aperiodic CSI and aperiodic CSI are firstly reported, and if there are multiple downlink cells that need to report periodic CSI information or aperiodic CSI information, the multiple downlink cells that report periodic CSI information or aperiodic CSI information are then according to the order of cell indexes.
12. The method of claim 2 or 4,
for Channel Quality Indication (CQI) and/or Precoding Matrix Indication (PMI) information, the corresponding coding mode refers to one of the following two modes:
when l isCQI/PMIN, using Reed-Muller code (Reed-Muller); when N is less than lCQI/PMIWhen M adopts tail-biting convolutional code (TBCC code), the code isCQI/PMIWhen the number is more than M, a Turbo code mode is adopted, M and N are fixed values appointed by the base station and the terminal, and N is less than M;
or, when lCQI/PMIN, adopting a Reed-Muller mode; lCQI/PMIWhen the number is more than N, adopting a TBCC code mode, wherein N is a fixed value appointed by the base station and the terminal;
wherein lCQI/PMIIs the length of the pre-coding bit sequence.
13. The method of claim 12,
if the length of the bit sequence is larger than 11 bits, performing a cyclic redundancy check with the length of 8.
14. A terminal for transmitting channel state information, the terminal being applied to a carrier aggregation system, the terminal comprising:
the coding calculation unit is used for coding the CSI information of one or more downlink cells to be reported according to a preset coding calculation mode to obtain coded CSI information;
the interleaving unit is used for interleaving the coded CSI information, the coded data and/or the coded other uplink control information and outputting the interleaved CSI information, the coded data and/or the coded other uplink control information to the transmission unit;
and the transmission unit is used for transmitting the data output by the interleaving unit on a PUSCH.
15. The terminal of claim 14,
the encoding calculation unit is used for performing one of the following predetermined encoding calculation modes:
the method comprises the steps that firstly, CSI information of a plurality of downlink cells needing to be reported is cascaded to obtain a bit sequence before coding; obtaining the number of required code modulation symbols according to the length of the bit sequence, coding the bit sequence according to a corresponding coding mode, and obtaining coded CSI information by rate matching to the coded target length; the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order;
in the second mode, the number of the required code modulation symbols is obtained according to the number of the downlink cells needing to report the CSI information multiplied by the maximum bit number in the bit sequence of the CSI information needing to be reported by each downlink cell; coding the CSI to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequence to obtain the coded CSI; the target length of each downlink cell after the CSI information coding which needs to be reported is equal to the number of the coded modulation symbols multiplied by the modulation order, and then is divided by the number of the downlink cells to be rounded up, or the target length of each downlink cell after the CSI information coding which needs to be reported is equal to the number of the coded modulation symbols divided by the number of the downlink cells, and then is multiplied by the modulation order to be rounded up;
obtaining the number of the required code modulation symbols according to the maximum bit number in the bit sequence of the CSI information to be reported by each downlink cell; coding the CSI information to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequences to obtain the coded CSI information; the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order;
in the fourth mode, the number of the required coded modulation symbols is respectively obtained according to the bit number of the bit sequence of the CSI information to be reported by each downlink cell; coding the CSI to be reported of each downlink cell according to a corresponding coding mode, matching the rate to the coded target length, and cascading the coded sequence to obtain the coded CSI; and the target length after coding is equal to the number of the coded modulation symbols multiplied by the modulation order.
16. The terminal of claim 15,
the coding calculation unit is further configured to cascade CSI information of the plurality of downlink cells according to one of the following sequences, or cascade each coded sequence:
a cell index order; or,
a cell priority order; or,
a main cell is firstly carried out, then a secondary cell is carried out, and if a plurality of secondary cells exist, the plurality of secondary cells are arranged according to the sequence of cell indexes; or,
periodic CSI is firstly carried out, and then aperiodic CSI is carried out; or, aperiodic CSI and aperiodic CSI are firstly reported, and if there are multiple downlink cells that need to report periodic CSI information or aperiodic CSI information, the multiple downlink cells that report periodic CSI information or aperiodic CSI information are then according to the order of cell indexes.
17. The terminal according to claim 15 or 16,
the coding calculation unit is further configured to, for CQI and/or PMI information, refer to one of the following two coding schemes according to the corresponding coding scheme:
when l isCQI/PMIN, adopting a Reed-Muller mode; when N is less than lCQI/PMIWhen M adopts TBCC code mode, when lCQI/PMIWhen the number is more than M, a Turbo code mode is adopted, M and N are fixed values appointed by the base station and the terminal, and N is less than M;
or, when lCQI/PMIIf N is less than N, a Reed-Muller code mode is adopted; lCQI/PMIWhen the number is more than N, adopting a TBCC code mode, wherein N is a fixed value appointed by the base station and the terminal;
wherein lCQI/PMIIs the length of the pre-coding bit sequence.
18. The terminal of claim 17,
the code calculation unit is further configured to perform a cyclic redundancy check of length 8 if the length of the bit sequence is greater than 11 bits.
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| PCT/CN2011/084471 WO2012094941A1 (en) | 2011-01-10 | 2011-12-22 | Method and terminal for transmitting channel state information |
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| CN201110004296.0A CN102075293B (en) | 2011-01-10 | 2011-01-10 | Method for sending channel state information and terminal |
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| CN110138803A (en) * | 2019-06-03 | 2019-08-16 | 武汉思普崚技术有限公司 | A kind of method and Visualization Platform of network behavior data |
| WO2021227973A1 (en) * | 2020-05-09 | 2021-11-18 | Qualcomm Incorporated | Field mapping order per physical layer csi report on pusch |
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| Publication number | Publication date |
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| WO2012094941A1 (en) | 2012-07-19 |
| CN102075293B (en) | 2017-02-08 |
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