WO2016119655A1 - 一种确定码本的方法及装置 - Google Patents
一种确定码本的方法及装置 Download PDFInfo
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- WO2016119655A1 WO2016119655A1 PCT/CN2016/071987 CN2016071987W WO2016119655A1 WO 2016119655 A1 WO2016119655 A1 WO 2016119655A1 CN 2016071987 W CN2016071987 W CN 2016071987W WO 2016119655 A1 WO2016119655 A1 WO 2016119655A1
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- matrix
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04B7/0482—Adaptive codebooks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0665—Feed forward of transmit weights to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
- H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
Definitions
- the antenna arrays of the base stations are generally horizontally arranged as shown in FIGS. 1 and 2.
- the base station transmitter beam can only be adjusted in the horizontal direction, and the vertical direction is a fixed downtilt angle for each user equipment. Therefore, various beamforming/precoding techniques are performed based on the horizontal channel information.
- the wireless signal is three-dimensionally propagated in space, the method of fixing the downtilt angle does not optimize the performance of the system.
- Vertical beam adjustment is important for system performance improvement. With the development of antenna technology, there have been active antennas in the industry that can independently control each array, as shown in Figures 3 and 4. Use this two-dimensional antenna array to make the beam vertical Dynamic adjustment of the direction is possible.
- channel state information reported by the UE where the channel state information is channel state information determined by the UE according to the codebook determining parameter and determined by using the codebook.
- the information of the matrix set includes values of each matrix in the matrix set, or includes related parameters for instructing the UE to determine each matrix in the matrix set.
- a determining unit configured to determine a codebook by using the codebook determining parameter.
- the information of the matrix set includes values of each matrix in the matrix set, or includes related parameters for instructing the UE to determine each matrix in the matrix set.
- the base station side After receiving the channel state information reported by the UE, the base station side can use the channel state information to determine a corresponding precoding matrix, and use the appropriate preprocessing of the transmitted signal to improve the validity and reliability of the information transmission.
- the channel state information described therein may be a PMI.
- the technical solution provided by the embodiment of the present application includes:
- Array vectors can be included in a matrix set, each vector corresponding to a spatial direction:
- N r matrices in the set of matrices with the number of columns r which are W r,1 , W r,2 ,..., W r,Nr .
- the number of codewords included in the codebook of rank 2 is (QM 2 ).
- the number of bits required by the UE to feed back a PMI of rank 2 is ceil (log 2 (QM 2 )), where ceil(x) is the smallest integer not less than x.
- the matrix in the matrix set is operated as a component component of the precoding matrix
- the matrix in the matrix set is subjected to Kronecker product as the precoding matrix.
- Component component when the matrix in the matrix set is operated as a component component of the precoding matrix, the matrix in the matrix set is subjected to Kronecker product as the precoding matrix. Component component.
- the apparatus for determining a codebook provided by the embodiment of the present application may be a base station, and the apparatus for determining a codebook provided by the embodiment of the present application may be a UE.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (26)
- 一种确定码本的方法,其特征在于,该方法包括:根据基站采用的天线阵列参数为用户设备UE配置码本确定参数;将该码本确定参数发送给所述UE,用以指示UE根据该码本确定参数确定码本。
- 根据权利要求1所述的方法,其特征在于,所述码本确定参数包括用于确定码本的一个或多个矩阵集合的信息。
- 根据权利要求2所述的方法,其特征在于,所述矩阵集合的信息,包括所述矩阵集合中每一矩阵的取值,或者包括用于指示UE确定矩阵集合中的每一矩阵的参数。
- 根据权利要求1所述的方法,其特征在于,根据基站采用的天线阵列参数为用户设备UE配置码本确定参数,包括:根据基站采用的天线阵列的天线个数和/或排列方式为用户设备UE配置码本确定参数。
- 根据权利要求1所述的方法,其特征在于,将该码本确定参数发送给所述UE之后,该方法还包括:接收所述UE上报的信道状态信息,其中该信道状态信息是所述UE根据所述码本确定参数确定码本并利用该码本确定的信道状态信息。
- 根据权利要求5所述的方法,其特征在于,所述信道状态信息中包括一个或者多个预编码矩阵指示符PMI,所述一个或者多个PMI对应一预编码矩阵;所述预编码矩阵是所述矩阵集合中的矩阵经过运算得到的;或者是由所述集合中的矩阵作为组成分量得到的;或者由所述矩阵集合中的矩阵经过运算后作为组成分量得到的。
- 根据权利要求6所述的方法,其特征在于,当将所述矩阵集合中的矩阵经过运算后作为所述预编码矩阵的组成分量时,将所述矩阵集合中的矩阵经过克罗内克Kronecker乘积后作为所述预编码矩阵的组成分量。
- 一种确定码本的方法,其特征在于,该方法包括:接收根据基站采用的天线阵列参数配置得到的码本确定参数;利用所述码本确定参数确定码本。
- 根据权利要求8所述的方法,其特征在于,所述码本确定参数包括用于确定码本的一个或多个矩阵集合的信息。
- 根据权利要求9所述的方法,其特征在于,所述矩阵集合的信息,包括所述矩阵集合中每一矩阵的取值,或者包括用于指示UE确定矩阵集合中的每一矩阵的相关参数。
- 根据权利要求9或10所述的方法,其特征在于,利用所述码本确定参数确定码本, 包括:根据所述矩阵集合的信息,确定矩阵集合;采用预先与所述基站约定好的运算规则,由所述矩阵集合中的矩阵运算得到码本中的码字;或者,将所述矩阵集合中的矩阵作为码本中码字的组成分量;或者,将所述矩阵集合中的矩阵经过运算后作为码本中码字的组成分量。
- 根据权利要求11所述的方法,其特征在于,当将所述矩阵集合中的矩阵经过运算后作为码本中码字的组成分量时,将所述矩阵集合中的矩阵经过克罗内克Kronecker乘积后作为码本中码字的组成分量。
- 根据权利要求9所述的方法,其特征在于,该方法还包括:利用所述码本确定信道状态信息,并上报给所述基站,其中所述信道状态信息中包括多个预编码矩阵指示符PMI,每一PMI对应一矩阵。
- 一种确定码本的装置,其特征在于,该装置包括:确定单元,用于根据基站采用的天线阵列参数为用户设备UE配置码本确定参数;传输单元,用于将该码本确定参数发送给所述UE,用以指示UE根据该码本确定参数确定码本。
- 根据权利要求14所述的装置,其特征在于,所述码本确定参数包括用于确定码本的一个或多个矩阵集合的信息。
- 根据权利要求15所述的装置,其特征在于,所述矩阵集合的信息,包括所述矩阵集合中每一矩阵的取值,或者包括用于指示UE确定矩阵集合中的每一矩阵的相关参数。
- 根据权利要求14所述的装置,其特征在于,所述确定单元具体用于:根据基站采用的天线阵列的天线个数和/或排列方式为用户设备UE配置码本确定参数。
- 根据权利要求14所述的装置,其特征在于,将该码本确定参数发送给所述UE之后,所述传输单元还用于:接收所述UE上报的信道状态信息,其中该信道状态信息是所述UE根据所述码本确定参数确定码本并利用该码本确定的信道状态信息。
- 根据权利要求18所述的装置,其特征在于,所述信道状态信息中包括一个或者多个预编码矩阵指示符PMI,所述一个或者多个PMI对应一预编码矩阵;所述预编码矩阵是所述矩阵集合中的矩阵经过运算得到的;或者是由所述集合中的矩阵作为组成分量得到的;或者由所述矩阵集合中的矩阵经过运算后作为组成分量得到的。
- 根据权利要求19所述的装置,其特征在于,当将所述矩阵集合中的矩阵经过运 算后作为所述预编码矩阵的组成分量时,将所述矩阵集合中的矩阵经过克罗内克Kronecker乘积后作为所述预编码矩阵的组成分量。
- 一种确定码本的装置,其特征在于,该装置包括:传输单元,用于接收根据基站采用的天线阵列参数配置得到的码本确定参数;确定单元,用于利用所述码本确定参数确定码本。
- 根据权利要求21所述的装置,其特征在于,所述码本确定参数包括用于确定码本的一个或多个矩阵集合的信息。
- 根据权利要求22所述的装置,其特征在于,所述矩阵集合的信息,包括所述矩阵集合中每一矩阵的取值,或者包括用于指示UE确定矩阵集合中的每一矩阵的相关参数。
- 根据权利要求22或23所述的装置,其特征在于,所述确定单元具体用于:根据所述矩阵集合的信息,确定矩阵集合;采用预先与所述基站约定好的运算规则,由所述矩阵集合中的矩阵运算得到码本中的码字;或者,将所述矩阵集合中的矩阵作为码本中码字的组成分量;或者,将所述矩阵集合中的矩阵经过运算后作为码本中码字的组成分量。
- 根据权利要求24所述的装置,其特征在于,当所述确定单元将所述矩阵集合中的矩阵经过运算后作为码本中码字的组成分量时,所述确定单元将所述矩阵集合中的矩阵经过克罗内克Kronecker乘积后作为码本中码字的组成分量。
- 根据权利要求22所述的装置,其特征在于,所述确定单元还用于:利用所述码本确定信道状态信息,并通过所述传输单元上报给所述基站,其中所述信道状态信息中包括多个预编码矩阵指示符PMI,每一PMI对应一矩阵。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US15/547,061 US10615855B2 (en) | 2015-01-30 | 2016-01-25 | Method and device for determining codebook |
JP2017539645A JP6556244B2 (ja) | 2015-01-30 | 2016-01-25 | コードブック確定方法及び装置 |
KR1020177021796A KR102100308B1 (ko) | 2015-01-30 | 2016-01-25 | 코드북 확정 방법 및 장치 |
EP16742717.8A EP3252965B1 (en) | 2015-01-30 | 2016-01-25 | Method and apparatus for determining codebook |
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CN201510051389.7 | 2015-01-30 | ||
CN201510051389.7A CN105991213B (zh) | 2015-01-30 | 2015-01-30 | 一种确定码本的方法及装置 |
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CN107370530B (zh) * | 2016-05-12 | 2021-02-12 | 华为技术有限公司 | 信道状态信息反馈方法、预编码方法、终端设备和基站 |
CN110224731B (zh) | 2017-09-10 | 2020-11-24 | 华为技术有限公司 | 一种字段的通知方法、用户设备和计算机可读存储介质 |
CN111082838B (zh) | 2018-10-18 | 2022-04-05 | 慧与发展有限责任合伙企业 | 自动选择码本 |
US11381293B2 (en) * | 2019-04-26 | 2022-07-05 | Samsung Electronics Co., Ltd. | Method and apparatus to enable high rank CSI reporting in wireless communication systems |
US11923934B2 (en) | 2020-08-03 | 2024-03-05 | Samsung Electronics Co., Ltd. | Method and apparatus for site-specific and dynamic base station beam codebook design |
CN114124177A (zh) * | 2020-08-28 | 2022-03-01 | 华为技术有限公司 | 确定码本的方法及通信装置 |
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Publication number | Publication date |
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EP3252965B1 (en) | 2020-11-04 |
EP3252965A4 (en) | 2018-05-02 |
KR20170102944A (ko) | 2017-09-12 |
CN105991213A (zh) | 2016-10-05 |
KR102100308B1 (ko) | 2020-04-13 |
JP6556244B2 (ja) | 2019-08-07 |
EP3252965A1 (en) | 2017-12-06 |
JP2018509051A (ja) | 2018-03-29 |
CN105991213B (zh) | 2020-02-21 |
US10615855B2 (en) | 2020-04-07 |
US20180013471A1 (en) | 2018-01-11 |
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