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WO2018127038A1 - Procédé de transmission d'informations d'état de canal, dispositif, et système - Google Patents

Procédé de transmission d'informations d'état de canal, dispositif, et système Download PDF

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Publication number
WO2018127038A1
WO2018127038A1 PCT/CN2018/070049 CN2018070049W WO2018127038A1 WO 2018127038 A1 WO2018127038 A1 WO 2018127038A1 CN 2018070049 W CN2018070049 W CN 2018070049W WO 2018127038 A1 WO2018127038 A1 WO 2018127038A1
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WO
WIPO (PCT)
Prior art keywords
csi
identifier
feedback
type
feature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/070049
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English (en)
Chinese (zh)
Inventor
吴晔
韩玮
毕晓艳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2018127038A1 publication Critical patent/WO2018127038A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • 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

Definitions

  • MIMO Multiple Input Multiple Output
  • a transmitting node such as a base station
  • CSI Channel Statement Information
  • a receiving node such as a user equipment
  • a suitable scheduling policy is selected for the downlink signal, where the CSI is obtained by the receiving node for channel measurement.
  • the receiving node can feed back the CSI to the sending node according to a predetermined combination of the type of CSI and the measurement mode of the CSI.
  • This type of receiving node feedbacks CSI in a single way with low flexibility.
  • a channel state information CSI feature corresponding to the feedback identifier Determining, according to the feedback identifier, a channel state information CSI feature corresponding to the feedback identifier, where the CSI feature includes at least one of a CSI type, a CSI measurement mode, and a CSI feedback timing;
  • the method for transmitting the channel state information further includes: receiving, by the base station, high layer configuration signaling, where the high layer configuration signaling indicates mapping of at least one set of feedback identifiers and CSI features relationship;
  • the determining the CSI feature corresponding to the feedback identifier includes:
  • the CSI feature includes: a combination of a CSI type, a CSI measurement mode, and a CSI feedback timing.
  • the feedback identifier includes at least one of a CSI type identifier, a CSI measurement mode identifier, and a CSI feedback timing identifier.
  • the determining, according to the feedback identifier, the CSI feature indicated by the feedback identifier includes:
  • the feedback identifier includes the CSI feedback timing identifier, determining a CSI feedback timing corresponding to the CSI feedback timing identifier according to the CSI feedback timing identifier.
  • the feedback identifier includes at least one of a CSI type identifier, a CSI measurement effective bandwidth identifier, a CSI measurement effective time identifier, and a CSI feedback timing identifier.
  • the determining, according to the feedback identifier, the CSI feature indicated by the feedback identifier includes:
  • the feedback identifier includes the CSI feedback timing identifier, determining a CSI feedback timing corresponding to the CSI feedback timing identifier according to the CSI feedback timing identifier.
  • the CSI type identifier occupies two identifier bits.
  • a method for transmitting channel state information includes:
  • the CSI feature includes: a combination of the CSI type, the CSI measurement mode, and a CSI feedback timing.
  • the feedback identifier includes at least one of a CSI type identifier, a CSI measurement mode identifier, and a CSI feedback timing identifier;
  • a transmission apparatus for channel state information includes at least one module, and the at least one module is configured to implement the implementation of any one of the foregoing first aspect or the first aspect Method of transmitting channel state information.
  • a transmission device comprising: a processor, a transmitter, a receiver, and a memory, wherein the transmitter, the receiver, and the memory are respectively connected to the processor, and the processor is configured to execute the memory
  • the UE After receiving the downlink signaling, the UE determines the CSI feature corresponding to the feedback identifier based on the feedback identifier carried in the downlink signaling, and performs channel measurement according to the CSI feature to feed back the CSI obtained by the channel measurement to the base station.
  • the CSI feature includes at least one of a CSI type, a CSI measurement mode, and a CSI feedback timing, that is, the CSI feature may include multiple CSI types, a CSI measurement mode, and a CSI feedback timing, so that the UE moves to the base station. Feedback CSI is more flexible.
  • FIG. 1 is a schematic diagram of a connection manner of devices in a wireless communication system provided by the present application.
  • FIG. 2 is a schematic structural diagram of a UE provided by the present application.
  • FIG. 4 is a flowchart of a method for transmitting channel state information provided by the present application.
  • FIG. 5 is a schematic structural diagram of a transmission apparatus for channel state information provided by the present application.
  • the foregoing UE 101 may include: a processor 1001, a receiver 1002, a transmitter 1003, and a memory 1004.
  • the receiver 1002, the transmitter 1003, and the memory 1004 are connected to the processor 1001 via a bus, respectively.
  • the processor 1001 includes one or more processing cores, and the processor 1001 executes the transmission method of the channel state information provided by the present application by running a software program and a module.
  • the memory 1004 can be used to store software programs as well as modules. Specifically, the memory 1004 can store an operating system 10041, an application module 10042 required for at least one function.
  • the receiver 1002 is configured to receive communication messages sent by other devices, and the transmitter 1003 is configured to send communication messages to other devices.
  • the foregoing base station 102 may include: a processor 1101, a receiver 1102, a transmitter 1103, and a memory 1104.
  • the receiver 1102, the transmitter 1103, and the memory 1104 are connected to the processor 1101 via a bus, respectively.
  • Step 401 The base station sends downlink signaling to the UE, where the downlink signaling carries a feedback identifier.
  • the UE can obtain the channel state information (Channel Statement Information; CSI for short) by measuring the channel, and the UE can feed back the CSI to the base station. Since the CSI can reflect the state and attributes of the channel, the base station can select an appropriate downlink signal transmission policy according to the indication of the CSI to improve the performance of the MIMO communication system.
  • CSI Channel Statement Information
  • the CSI may include multiple types, such as a channel quality indicator (CQI), a precoding matrix indicator (PMI), and a rank indication (English: Rank).
  • CQI channel quality indicator
  • PMI precoding matrix indicator
  • RI rank indication
  • covariance matrix English: covariance matrix
  • main eigen component of covariance matrix English: main beam component
  • beam index English: beam index
  • CQI, PMI, and RI are the most common types of CSI.
  • the base station can determine the size, coding mode, and modulation mode of the transmitted data block according to the size of the CQI.
  • the downlink signal can be precoded according to the PMI.
  • the RI selects the appropriate spatial stream number to transmit the downlink signal.
  • Step 403 The UE determines, according to the feedback identifier, a CSI feature corresponding to the feedback identifier, where the CSI feature includes one of a CSI type, a CSI measurement mode, and a CSI feedback timing.
  • the mapping relationship stored in the UE may be a mapping relationship between the at least one set of the feedback identifier and the combination of the CSI type, the CSI measurement mode, and the CSI feedback timing, that is, at least one set of the feedback identifier and the CSI.
  • the CSI feature corresponding to the feedback identifier carried in the downlink signaling determined by the UE according to the feedback identifier carried in the downlink signaling is a combination of a CSI type, a CSI measurement mode, and a CSI feedback timing, that is, a CSI type
  • the CSI measures the combination of effective bandwidth, CSI measurement effective time, and CSI feedback timing.
  • mapping relationship shown in Table 1 is merely exemplary, and it does not limit the present application.
  • the CSI type corresponding to the feedback identifier “0” is “CQI, PMI, and RI”, and the corresponding CSI measurement effective bandwidth is wideband, and the corresponding CSI measurement effective time is Long-term, and the corresponding CSI feedback timing is periodic.
  • the CSI type corresponding to the feedback identifier "1" is CQI, the corresponding CSI measurement effective bandwidth is wideband, the corresponding CSI measurement effective time is Long-term, and the corresponding CSI feedback timing is periodic.
  • the CSI features corresponding to other feedback identifiers in Table 1 are not described here.
  • mapping relationship stored in the UE is the mapping relationship shown in Table 1
  • the UE may query the mapping relationship in Table 1 to obtain the mapping relationship.
  • the CSI feature corresponding to the feedback identifier “0” carried in the downlink signaling is “combination of CQI, PMI, RI, wideband, Long-term, and periodic”.
  • the feedback identifier in the mapping relationship stored in the UE may include a CSI type measurement mode joint identifier and a CSI feedback timing identifier
  • the mapping relationship stored in the UE may include: at least one set of CSI type measurement manner joint identifiers and “ A mapping relationship between a CSI type and a CSI measurement mode combination, and a mapping relationship between at least one CSI feedback timing identifier and a CSI feedback timing, where the CSI measurement mode is a combination of a CSI measurement effective bandwidth and a CSI measurement effective time.
  • the feedback identifier carried in the downlink signaling may include at least one of a CSI type measurement mode joint identifier and a CSI feedback timing identifier.
  • the CSI feature that is determined by the UE according to the feedback identifier carried in the downlink signaling, and the CSI feature corresponding to the feedback identifier carried in the downlink signaling is the combination of the CSI type and the CSI measurement mode and the CSI feedback timing corresponding to the CSI type measurement mode joint identifier. At least one of the corresponding CSI feedback timings is identified.
  • mapping relationship stored in the UE can be as shown in Table 2 and Table 3:
  • mapping relationship shown in Table 2 and Table 3 is merely exemplary, and it does not limit the present application.
  • the feedback identifier carried in the downlink signaling may include at least one of a CSI type measurement mode joint identifier and a CSI feedback timing identifier
  • the feedback identifier carried in the downlink signaling includes only the CSI type measurement mode joint identifier
  • the UE may determine, according to the CSI type measurement mode, the combination of the CSI type, the CSI measurement effective bandwidth, and the CSI measurement effective time corresponding to the CSI type measurement mode joint identifier, and determine the feedback identifier carried in the downlink signaling. Corresponding CSI features.
  • the UE may determine the CSI feedback timing corresponding to the CSI feedback timing identifier according to the CSI feedback timing identifier, and determine the feedback identifier carried in the downlink signaling.
  • Corresponding CSI features For example, if the feedback identifier carried in the downlink signaling includes only the CSI feedback timing identifier, and the CSI feedback timing identifier is 1, the query table 3 indicates that the CSI feature corresponding to the feedback identifier carried in the downlink signaling is For "aperiodic".
  • the feedback identifier carried in the downlink signaling may include at least one of a CSI type identifier, a CSI measurement mode identifier, and a CSI feedback timing identifier.
  • the CSI feature corresponding to the CSI type corresponding to the CSI type identifier and the CSI measurement mode identifier and the CSI feedback timing identifier corresponding to the CSI type identifier are determined by the UE according to the feedback identifier carried in the downlink signaling. At least one of the corresponding CSI feedback timings.
  • CSI measurement method identification CSI measures the effective bandwidth CSI measurement effective time 0 Wideband Long-tem 1 Wideband Long-term 2 Subband indicated by high layer Short-term 3 UE-selected subband Short-term 4 Wideband Long-term
  • the feedback identifier carried in the downlink signaling may include at least one of a CSI type identifier, a CSI measurement mode identifier, and a CSI feedback timing identifier
  • the UE may be determined according to the CSI type identifier, and determined as a CSI feature corresponding to the feedback identifier carried in the downlink signaling.
  • the feedback identifier carried in the downlink signaling includes only the CSI type identifier, and the CSI type identifier is 1.
  • the CSI feature corresponding to the feedback identifier carried in the downlink signaling is “CQI”.
  • the UE may determine the CSI feedback timing corresponding to the CSI feedback timing identifier according to the CSI feedback timing identifier, and determine the feedback carried in the downlink signaling. Identify the corresponding CSI feature.
  • the feedback identifier carried in the downlink signaling includes only the CSI feedback timing identifier, and the CSI feedback timing identifier is 1, and the CSI feature corresponding to the feedback identifier carried in the downlink signaling is “ Aperiodic”.
  • the fourth type, the feedback identifier in the mapping relationship stored in the UE may include a CSI type identifier, a CSI measurement effective bandwidth identifier, a CSI measurement effective time identifier, and a CSI feedback timing identifier, where the mapping relationship stored in the UE may include: at least one group The mapping relationship between the CSI type identifier and the CSI type, the mapping relationship between the at least one CSI measurement effective bandwidth identifier and the CSI measurement effective bandwidth, the mapping relationship between the at least one CSI measurement effective time identifier and the CSI measurement effective time, and at least one set of CSI feedback The mapping relationship between the timing identifier and the CSI feedback timing.
  • mapping relationship stored in the UE may be as shown in Table 7, Table 8, Table 9, and Table 10:
  • the UE may determine, according to the CSI measurement effective time identifier, a CSI measurement effective time corresponding to the CSI measurement effective time identifier, and determine the downlink signaling as the downlink signaling.
  • the feedback identifier carried in the identifier identifies the corresponding CSI feature.
  • the feedback identifier carried in the downlink signaling includes only the CSI measurement effective time identifier, and the CSI measurement effective time identifier is 1, and the CSI feature corresponding to the feedback identifier carried in the downlink signaling is known by using the query table 9. Is "Short-term".
  • Step 406 The base station receives the CSI.
  • the measuring module 503 is configured to perform the above step 404.
  • the base station 702 is configured to perform operations performed by the base station in the embodiment shown in FIG.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne le domaine de la communication radio, et en particulier un procédé de transmission d'informations d'état de canal (CSI), un dispositif, et un système. Le procédé comporte les étapes suivantes: un UE reçoit une signalisation de liaison descendante émanant d'une station de base et transportant une identification de rétroaction; et l'UE détermine, d'après l'identification de rétroaction, une caractéristique de CSI, et effectue, d'après la caractéristique de CSI, une mesure de canal pour obtenir des CSI à renvoyer à la station de base; la caractéristique de CSI comportant un CSI type et/ou un procédé de mesure de CSI et/ou et/ou une opportunité de rétroaction de CSI. Étant donné que la caractéristique de CSI comporte au moins un élément parmi le type de CSI, le procédé de mesure de CSI, et l'opportunité de rétroaction de CSI, la caractéristique de CSI peut comprendre une pluralité de combinaisons de divers types de CSI et divers procédés de mesure de CSI, réalisant une rétroaction de CSI souple de l'UE à une station de base.
PCT/CN2018/070049 2017-01-05 2018-01-02 Procédé de transmission d'informations d'état de canal, dispositif, et système Ceased WO2018127038A1 (fr)

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CN201710007146.2A CN108282209A (zh) 2017-01-05 2017-01-05 信道状态信息的传输方法、装置及系统
CN201710007146.2 2017-01-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114747250A (zh) * 2019-11-29 2022-07-12 上海诺基亚贝尔股份有限公司 信道状态信息的反馈
EP3979514A4 (fr) * 2019-08-26 2022-08-03 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédés de traitement d'informations d'état de canal, dispositif électronique et support d'informations
WO2024032469A1 (fr) * 2022-08-12 2024-02-15 中兴通讯股份有限公司 Procédé et dispositif de renvoi de paramètre de mesure, terminal et support de stockage

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CN102255685A (zh) * 2010-05-17 2011-11-23 华为技术有限公司 反馈和获取csi的方法、ue及基站
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CN102916785A (zh) * 2011-08-04 2013-02-06 华为技术有限公司 信息反馈方法、用户设备和基站
US20130077581A1 (en) * 2011-09-23 2013-03-28 Samsung Electronics Co. Ltd. Method and apparatus for transmitting and receiving feedback for cooperative communication system

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CN103716116B (zh) * 2012-09-28 2019-04-16 中兴通讯股份有限公司 信道状态信息反馈信令的配置方法、基站和终端

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CN102255685A (zh) * 2010-05-17 2011-11-23 华为技术有限公司 反馈和获取csi的方法、ue及基站
CN102281131A (zh) * 2010-06-13 2011-12-14 电信科学技术研究院 多载波系统中的信息配置及反馈方法、系统和设备
CN102469499A (zh) * 2010-11-16 2012-05-23 大唐移动通信设备有限公司 一种信道状态信息上报所需参数的确定方法及设备
CN102916785A (zh) * 2011-08-04 2013-02-06 华为技术有限公司 信息反馈方法、用户设备和基站
US20130077581A1 (en) * 2011-09-23 2013-03-28 Samsung Electronics Co. Ltd. Method and apparatus for transmitting and receiving feedback for cooperative communication system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3979514A4 (fr) * 2019-08-26 2022-08-03 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédés de traitement d'informations d'état de canal, dispositif électronique et support d'informations
CN114747250A (zh) * 2019-11-29 2022-07-12 上海诺基亚贝尔股份有限公司 信道状态信息的反馈
WO2024032469A1 (fr) * 2022-08-12 2024-02-15 中兴通讯股份有限公司 Procédé et dispositif de renvoi de paramètre de mesure, terminal et support de stockage

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