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WO2012062197A1 - 一种信道质量信息的上报方法及其装置 - Google Patents

一种信道质量信息的上报方法及其装置 Download PDF

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Publication number
WO2012062197A1
WO2012062197A1 PCT/CN2011/081922 CN2011081922W WO2012062197A1 WO 2012062197 A1 WO2012062197 A1 WO 2012062197A1 CN 2011081922 W CN2011081922 W CN 2011081922W WO 2012062197 A1 WO2012062197 A1 WO 2012062197A1
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Prior art keywords
cqi
reporting
csi
mode
user equipment
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PCT/CN2011/081922
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English (en)
French (fr)
Inventor
苏昕
高秋彬
拉盖施
沈祖康
孙韶辉
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Priority to EP11839668.8A priority Critical patent/EP2648443B1/en
Priority to US14/002,113 priority patent/US9872190B2/en
Publication of WO2012062197A1 publication Critical patent/WO2012062197A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • 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
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H04L1/003—Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • 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
    • H04B7/0667—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 delayed versions of same signal
    • H04B7/0671—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 delayed versions of same signal using different delays between antennas
    • 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
    • H04B7/0697—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 spatial multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method for reporting channel quality information and an apparatus therefor. Background technique
  • the LTE (Long Term Evolution) system uses a physical layer based on OFDM (Orthogonal Frequency Division Multiplexing) and MIMO (Multiple Input Multiple-Output) technologies. Architecture. In order to better adapt to the transmission environment, the LTE system uses a variety of adaptive technologies. For different application scenarios, eight downlink transmission modes are defined in the LTE Rel-8/9 system. At least one new transmission mode needs to be defined in the Rel-10 system to support up to 8 layers of downlink MIMO transmission. Based on the transmission mode adaptation, TM (Transmission Mode) 4, 7, 8, 9 eNB (evolved Node B, evolved base station) can also adaptively select the rank of downlink transmission according to the spatial characteristics of the channel. .
  • TM Transmission Mode
  • eNB evolved Node B, evolved base station
  • the network side can adjust the data rate of each data layer by controlling the modulation order and coding rate to accurately match the transmission capability of each spatial data channel.
  • the LTE system can support up to two codewords of MCS (Modulation & Coding). Scheme, modulation and coding scheme) for dynamic adjustment.
  • MCS Modulation & Coding
  • Scheme, modulation and coding scheme for dynamic adjustment.
  • the channel response tends to exhibit a relatively high frequency selectivity. Therefore, the eNB can flexibly select the UE for scheduling according to the channel state and interference condition of each UE (User Equipment) in each frequency band. , thereby obtaining frequency selective scheduling and multi-user diversity gain.
  • the network side can also perform reasonable resource allocation according to the channel state on each frequency band to avoid interference between cells.
  • Channel quality information is an important basis for various adaptive adjustments and scheduling on the network side.
  • the channel quality is quantized into a 4-bit CQI (Channel Quality Indicator), and each CQI label corresponds to a combination of a modulation mode and a coding rate. Under this combination condition, the UE should ensure that The error probability of receiving a transport block does not exceed 0.1.
  • CQI Channel Quality Indicator
  • the UE When calculating the CQI, the UE needs to make a hypothesis on the transmission scheme of the PDSCH (Physical Downlink Shared Channel) according to the transmission mode in which the UE is located. For example, when calculating the CQI defined in the LTE Rel-9 system, the assumptions for the PDSCH transmission scheme are as shown in Table 1.
  • the measurement and demodulation methods based on CRS are adopted in the transmission modes 1-6 in the LTE Rel-8/9 system, and the CRS-based measurement is adopted in TM7 and 8. Demodulation mechanism based on DMRS (Demodulation Reference Signal).
  • CRS Cell-Specific Reference Signal
  • TM7 and 8 Demodulation mechanism based on DMRS (Demodulation Reference Signal).
  • the UE needs to calculate and report its recommended PMI based on the measurement of the CRS. (Precoding Matrix Indicator, the precoding matrix indicator;), and the UE reports the CQI, and assumes that the eNB uses the PMI it reports.
  • the non-codebook precoding method is adopted in the TM7, and the UE only needs to report the CQI to the eNB, and the eNB calculates the precoding or the shaping vector.
  • the PMI and the non-PMI can be supported.
  • the UE can generate the report according to the measurement of the CRS according to the feedback mode of the high-level configuration and the specific reporting mode (including the PMI/RI (Rank Indication). /CQI or CQI.
  • LTE-A LTE Advanced, Advanced Long Term Evolution
  • CSI-RS Channel State Information-Reference Signal
  • the UE operating in TM9 needs to generate CQI/PMI/RI and other reported information according to the measurement of CSI-RS.
  • the UE can assume that the eNB uses the PMI/RL reported by the eNB. On this basis, the UE can calculate each codeword in a manner similar to closed-loop spatial multiplexing (such as the TM4 system). CQI. However, for non-PMI feedback based transmission methods, there is no method for channel quality information measurement and reporting based on CSI-RS. Summary of the invention
  • An object of the present invention is to provide a method for reporting channel quality information and a device thereof for implementing CSI-RS based channel quality information measurement and reporting on non-PMI feedback-based transmission. To this end, the present invention adopts the following technical solutions:
  • a method for reporting channel quality information includes:
  • the user equipment measures the CSI-RS according to the configuration information of the CSI-RS, and obtains a downlink channel transmission matrix; Determining, by the user equipment, a CQI of a frequency domain reporting unit according to a PDSCH transmission mode according to determining a channel quality indication CQI, and a measured downlink channel transmission matrix;
  • the user equipment reports the determined CQI to the network side.
  • a user equipment including:
  • a measurement module configured to measure a CSI-RS according to configuration information of the CSI-RS, to obtain a downlink channel transmission matrix
  • a determining module configured to determine a CQI of the reporting unit in the frequency domain according to the downlink channel transmission matrix measured by the measurement module, and the PDSCH transmission mode according to the channel quality indication CQI;
  • the reporting module is configured to report, to the network side, the CQI determined by the determining module.
  • the CSI-RS is measured by the user equipment to obtain a downlink channel transmission matrix, and the CQI of the frequency domain reporting unit is determined and reported according to the downlink channel transmission matrix and the PDSCH transmission mode according to the CQI.
  • the transmission based on non-PMI feedback implements CSI-RS based channel quality information measurement and reporting.
  • FIG. 1 is a schematic diagram of a channel quality information reporting process according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention proposes a channel quality information reporting mechanism for the non-PMI feedback mode.
  • FIG. 1 is a schematic flowchart of a channel quality information reporting process according to an embodiment of the present invention, where the process may include: Step 101: The UE acquires CSI-RS configuration information.
  • the UE may acquire the configuration information of the CSI-RS by using the system broadcast mode after the network is accessed, that is, the UE may obtain the configuration information of the CSI-RS carried by the UE by listening to the broadcast message on the network side.
  • the CSI-RS configuration information may include a time-frequency location of the CSI-RS, a transmission period, and a number of ports for transmitting the CSI-RS.
  • Step 102 The UE performs CSI-RS measurement according to the CSI-RS configuration information to obtain a downlink channel transmission matrix.
  • the UE may measure the CSI-RS sent at the time-frequency position indicated in the CSI-RS configuration information according to the transmission period of the CSI-RS.
  • the downlink channel transmission matrix can be obtained by CSI-RS measurement, and the channel transmission matrix can be expressed as:
  • the UE can also measure the received interference and noise.
  • Step 103 The UE determines the CQI according to the downlink channel transmission matrix measured by the CSI-RS, and sends the CQI to the network side.
  • the downlink channel transmission mode on which the CQI is calculated has been obtained before the UE reports the CQI.
  • the downlink channel transmission mode on which the CQI is calculated may be pre-configured on the UE and the base station, so that the downlink channel transmission mode on which the CQI is calculated is determined by the UE and the eNB before the CQI is reported by the UE.
  • the UE can calculate the CQI and report the calculated CQI for each frequency domain reporting unit (such as a broadband or subband) according to the reporting mode of the high-level configuration, according to the downlink channel transmission mode on which the CQI is calculated.
  • the reporting mode of the high-level configuration may include one of the following:
  • PUCCH Physical Uplink Control Channel reporting mode 1-0 (PUCCH reporting mode 1-0);
  • PUCCH reporting mode 2-0 PUCCH reporting mode 2-0
  • PUSCH reporting mode 2-0 PUSCH reporting mode 2-0
  • PUSCH reporting mode 3-0 (PUSCH reporting mode 3-0).
  • the downlink channel transmission mode according to the calculation of the CQI may be included.
  • the UE assumes that the base station maps the PDSCH data to P in the manner of W.s.
  • the value of the P may be 1, 2, 4, 8, etc., and the value is the same as the number of ports of the CSI-RS included in the CSI-RS configuration information acquired by the UE.
  • the ⁇ ⁇ ⁇ matrix W is a fixed matrix, or is selected from a certain matrix set in a preset order to ensure that the eNB can know the W assumed by the UE each time the CQI is reported.
  • the specific definition rules or calculation rules or selection rules of the matrix W may be determined according to implementation requirements or actual application conditions.
  • the UE may perform CSI-RS measurement and CQI reporting according to the CSI-RS transmission period. As long as the configuration information of the CSI-RS does not change, the UE can always perform CSI-RS measurement according to the configuration information.
  • the network side may notify the updated CSI-RS configuration information by using a broadcast manner, and the UE may receive the updated CSI-RS configuration information according to the updated CSI-RS configuration. The information is subjected to CSI-RS measurement and CQI reporting.
  • the configuration information of the CSI-RS may be obtained by the UE in other manners, in addition to being configured to be broadcasted to the UE.
  • the embodiment of the present invention further provides a user equipment, which can be applied to the foregoing process.
  • the user equipment provided by the embodiment of the present invention may include:
  • the measuring module 201 is configured to measure the CSI-RS according to the configuration information of the CSI-RS, and obtain Downlink channel transmission matrix;
  • the determining module 202 is configured to determine, according to the downlink channel transmission metric matrix measured by the measurement module 201, and the PDSCH transmission mode according to the channel quality indication CQI, determine the CQI of the frequency domain reporting unit;
  • the reporting module 203 is configured to report the CQI determined by the determining module 202 to the network side.
  • the foregoing user equipment may further include a storage module 204, configured to store information of the PDSCH transmission mode, where the PDSCH transmission manner includes:
  • the base station maps the PDSCH data to P according to the method of : W .s
  • the CSI-RS port is up; where W is a P x l-dimensional matrix, and W is known to the user equipment and the network side before reporting the CQI.
  • the mode of reporting the CQI by the reporting module 203 in the user equipment is one of the following: physical uplink control channel PUCCH 4 ⁇ mode 1-0;
  • the foregoing user equipment may further include an obtaining module 205, configured to obtain configuration information of the CSI-RS by using a broadcast manner, and store the configuration information of the CSI-RS into the storage module 204.
  • an obtaining module 205 configured to obtain configuration information of the CSI-RS by using a broadcast manner, and store the configuration information of the CSI-RS into the storage module 204.
  • the downlink channel transmission matrix is obtained by the UE measuring the CSI-RS, and the CQI is determined and reported according to the downlink channel transmission matrix and the PDSCH transmission mode according to the pre-configured CQI.
  • the transmission based on the non-PMI feedback is implemented to implement channel quality information measurement and reporting based on CSI-RS.
  • the embodiment of the present invention assumes that the PDSCH is transmitted in the Ws mode, so that the CQI determination process is easy.
  • the modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or the corresponding changes may be located in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A terminal device (which may be a cell phone, a personal computer, a server, or a network device, etc.) performs the methods described in various embodiments of the present invention.

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

Abstract

本发明公开了一种信道质量信息的上报方法及其装置，该方法包括：用户设备根据CSI-RS的配置信息测量CSI-RS，获得下行信道传输矩阵；所述用户设备根据确定信道质量指示CQI时所依据的PDSCH传输方式，以及测量得到的下行信道传输矩阵，确定频域上报单位的CQI；所述用户设备向网络侧上报确定出的CQI。采用本发明，可实现基于非PMI反馈的传输实现基于CSI-RS的信道质量信息测量与上报。

Description

一种信道质量信息的上报方法及其装置
本申请要求以下中国专利申请的优先权：
于 2010年 11月 8日提交中国专利局，申请号为 201010539036.9, 发明名称为 "一种信道质量信息的上报方法及其装置"的中国专利申 请。 技术领域
本发明涉及无线通信领域，尤其涉及一种信道质量信息的上报方 法及其装置。 背景技术
LTE ( Long Term Evolution, 长期演进） 系统采用了以 OFDM ( Orthogonal Frequency Division Multiplexing , 正交频分复用 ) 与 MIMO ( Multiple-Input Multiple-Out-put, 多输入多输出）技术为基础 的物理层构架。 为了更好地适应传输环境， LTE系统采用了多种自适 应技术。 针对不同的应用场景， LTE Rel-8/9系统中定义了 8种下行 传输模式， Rel-10系统中至少还需要定义一种新的传输模式以支持最 高 8 层的下行 MIMO 传输。 在传输模式自适应的基础之上， TM ( Transmission Mode, 传输模式） 4、 7、 8、 9 eNB ( evolved Node B, 演进型基站）还可以根据信道的空间特性自适应地选择下行传输 的秩。 理论上讲， 网络侧可以通过对调制阶数与编码速率的控制调整 每个数据层的数据速率， 以精确地匹配各个空间数据通道的传输能 力。 但是处于对控制复杂度与反馈开销的角度考虑， LTE 系统的 MIMO传输中最多可以支持对 2个码字的 MCS ( Modulation& Coding Scheme, 调制与编码方案）进行动态调整。 在 LTE系统的传输带宽 之内， 信道响应往往呈现出较为明显的频率选择性， 因此 eNB 可以 根据各 UE ( User Equipment, 用户设备 )在各频带上的信道状态与干 扰情况灵活地选择 UE进行调度， 从而获得频率选择性调度与多用户 分集增益。 同时， 网络侧还可以根据各频带上的信道状态进行合理的 资源分配以避免小区之间的干扰。
信道质量信息是网络侧进行各种自适应调整与调度的重要基础。 LTE系统中，将信道质量量化为 4bit的 CQI( Channel Quality Indicator, 信道质量指示 ), 每个 CQI的标号都对应一种调制方式与编码速率的 组合， 在这种组合条件下， UE应保证对传输块进行接收的错误概率 不超过 0.1。
UE 在计算 CQI 时， 需要根据其所处的传输模式对 PDSCH ( Physical Downlink Shared Channel, 物理下行共享信道） 的传输方 案进行假设。 例如， LTE Rel-9系统中定义的 CQI计算时， 对 PDSCH 传输方案的假设方式如表 1所示。
表 1. CQI计算过程中对 PDSCH传输方案的假设
Figure imgf000004_0001
LTE Rel-8/9 系统中的传输模式 1-6 中都采用了基于 CRS ( Cell-Specific Reference Signal, 小区专属参考符号） 的测量与解调 方式， 而 TM7、 8 中采用了基于 CRS 的测量与基于 DMRS ( Demodulation Reference Signal, 解调参考符号 )的解调机制。 其中 TM2-6 中， UE都需要根据对 CRS的测量计算并上报其推荐的 PMI ( Precoding Matrix Indicator, 预编码矩阵指示；)， 而 UE上报 CQI时 则假设 eNB使用了其上报的 PMI。 TM7中采用了非码本的预编码方 式， UE只需要向 eNB上报 CQI, 而由 eNB对预编码或赋形矢量进 行计算。 在 TM9中， 可以支持 PMI与 non-PMI两种反馈方式， UE 可以按照高层配置的反馈方式与具体上报模式根据对 CRS的测量生 成上报量（可包括 PMI/RI(Rank Indication,数据流数 )/CQI或者 CQI。 LTE-A ( LTE Advanced, 高级长期演进） 系统中， 为了支持更高阶的 MIMO传输（最多支持 8个数据层 )以及后续版本中的多小区联合处 理功能，引入了新定义的 CSI-RS ( Channel State Information-Reference Signal, 信道状态信息导频）。 工作于 TM9的 UE需要根据对 CSI-RS 的测量才能生成 CQI/PMI/RI等上报信息。
发明人在实现本发明的过程中， 发现现有技术至少存在以下问 题：
在 TM9中， 对于基于 PMI反馈的传输方式而言， UE可以假设 eNB使用了其上报的 PMI/RL 在此基础上， UE可以按照类似闭环空 间复用 （如 TM4系统） 的方式计算各码字的 CQI。 但是， 对于基于 非 PMI反馈的传输方式而言， 尚不存在一种基于 CSI-RS进行信道质 量信息测量与上报的方法。 发明内容
本发明的目的在于提供一种信道质量信息的上报方法及其装置， 用以对于基于非 PMI反馈的传输实现基于 CSI-RS的信道质量信息测 量与上报， 为此， 本发明采用如下技术方案：
一种信道质量信息的上报方法， 包括：
用户设备根据 CSI-RS的配置信息测量 CSI-RS,获得下行信道传 输矩阵； 所述用户设备根据确定信道质量指示 CQI时所依据的 PDSCH传 输方式， 以及测量得到的下行信道传输矩阵， 确定频域上报单位的 CQI;
所述用户设备向网络侧上报确定出的 CQI。
一种用户设备， 包括：
测量模块， 用于根据 CSI-RS的配置信息测量 CSI-RS, 获得下行 信道传输矩阵；
确定模块， 用于根据所述测量模块测量得到的下行信道传输矩 阵， 以及确定信道质量指示 CQI时所依据的 PDSCH传输方式， 确定 频域上报单位的 CQI;
上报模块， 用于向网络侧上报所述确定模块确定出的 CQI。
本发明的上述实施例， 通过用户设备测量 CSI-RS获得下行信道 传输矩阵， 并根据该下行信道传输矩阵， 以及确定 CQI 时所依据的 PDSCH传输方式确定频域上报单位的 CQI并上报， 从而实现了基于 非 PMI反馈的传输实现基于 CSI-RS的信道质量信息测量与上报。 附图说明
图 1为本发明实施例提供的信道质量信息上报流程示意图； 图 2为本发明实施例提供的用户设备的结构示意图。 具体实施方式
针对现有技术存在的上述问题， 本发明实施例提出了一种针对 non-PMI反馈方式的信道质量信息上报机制。
下面结合附图对本发明实施例进行详细描述。
参见图 1 ,为本发明实施例提供的信道质量信息上报流程示意图， 该流程可包括： 步骤 101 , UE获取 CSI-RS配置信息。
具体的， UE可在接入网络之后， 通过系统广播方式获取 CSI-RS 的配置信息， 即， UE可通过监听网络侧的广播消息获取其中携带的 CSI-RS的配置信息。 CSI-RS配置信息可包括 CSI-RS的时频位置、 传输周期以及传输 CSI-RS的端口数等。
步骤 102, UE根据 CSI-RS配置信息进行 CSI-RS测量， 以获得 下行信道传输矩阵。
其中， UE可根据 CSI-RS的传输周期， 对 CSI-RS配置信息中所 指示的时频位置上发送的 CSI-RS进行测量。 通过 CSI-RS测量可获 得下行信道传输矩阵， 信道传输矩阵可表示为：
Figure imgf000007_0001
进一步的， UE还可对接收到的干扰和噪声进行测量。
步骤 103, UE根据 CSI-RS测量得到的下行信道传输矩阵， 确定 CQI并上 ^艮给网络侧。
其中， 在 UE上报 CQI之前， 已获得计算 CQI时所依据的下行 信道传输方式。 具体的， 可将计算 CQI 时所依据的下行信道传输方 式预先配置在 UE和基站上， 从而在 UE上报 CQI之前， 使计算 CQI 时所依据的下行信道传输方式为 UE与 eNB所确知。 UE可根据高层 配置的上报模式， 按照计算 CQI 时所依据的下行信道传输方式， 为 每个频域上报单位（如宽带或子带）计算出 CQI并上报计算出的 CQI。
其中， 高层配置的上报模式可包括以下之一：
PUCCH ( Physical Uplink Control Channel, 物理上行控制信道） 上报模式 1-0 ( PUCCH reporting mode 1-0 );
PUCCH上报模式 2-0 ( PUCCH reporting mode 2-0 ); PUSCH ( Physical Uplink Shared Channel, 物理上行共享信道） 上报模式 2-0 ( PUSCH reporting mode 2-0 );
PUSCH上才艮模式 3-0 ( PUSCH reporting mode 3-0 )。
本发明实施例中， 计算 CQI 时所依据的下行信道传输方式可包
Figure imgf000008_0001
UE假设基站按照 W .s的方式将 PDSCH的数据映射到 P
1) 个 CSI-RS端口上去。 所述 P的取值可以是 1,2,4,8等， 其值与 UE所 获取到的 CSI-RS配置信息中所包含的 CSI-RS的端口数相同。
其中， Ρ χ ΐ 维矩阵 W为某个固定矩阵， 或者按照某种预先设定 的顺序从某个矩阵集合中进行选取， 以保证每次上报 CQI 时， eNB 能够获知 UE假设的 W。其中， 矩阵 W具体的定义规则或计算规则或 选择规则， 可根据实现需要或实际应用情况确定。
需要说明的是， UE获取到 CSI-RS的配置信息后， 就可以根据 CSI-RS的传输周期进行 CSI-RS测量和 CQI上报了。 只要 CSI-RS的 配置信息不改变， 则 UE可一直根据该配置信息进行 CSI-RS测量。 当 CSI-RS的配置信息发生改变时， 网络侧可通过广播方式将更新的 CSI-RS配置信息进行通知， UE可在接收到更新的 CSI-RS配置信息 后，根据该更新的 CSI-RS配置信息进行 CSI-RS测量以及 CQI上报。
还需要说明的是， CSI-RS的配置信息除通过广播方式配置到 UE 上以外， 还可以通过其他方式为 UE所获得。
基于相同的技术构思， 本发明实施例还提供了一种用户设备， 可 应用于上述流程。
如图 2所示， 本发明实施例提供的用户设备， 可包括：
测量模块 201 , 用于根据 CSI-RS的配置信息测量 CSI-RS, 获得 下行信道传输矩阵；
确定模块 202, 用于根据测量模块 201测量得到的下行信道传專 ί 矩阵， 以及确定信道质量指示 CQI时所依据的 PDSCH传输方式， 确 定频域上报单位的 CQI;
上报模块 203, 用于向网络侧上报确定模块 202确定出的 CQI。 上述用户设备还可包括存储模块 204, 用于存储所述 PDSCH传 输方式的信息， 所述 PDSCH传输方式包括：
Figure imgf000009_0001
假设基站按照 ： W .s的方式将 PDSCH的数据映射到 P个
, P— 1)
CSI-RS端口上去； 其中， W为 P x l维矩阵， 且在上报 CQI之前 W 为用户设备及网络侧确知。
上述用户设备中的上报模块 203上报 CQI的模式为以下之一： 物理上行控制信道 PUCCH上4艮模式 1-0;
PUCCH上报模式 2-0;
物理上行共享信道 PUSCH上报模式 2-0;
PUSCH上报模式 3-0。
上述用户设备还可包括获取模块 205, 用于通过广播方式获得所 述 CSI-RS的配置信息， 并将该 CSI-RS的配置信息存储到存储模块 204中。
综上所述， 本发明的上述实施例， 通过 UE测量 CSI-RS获得下 行信道传输矩阵， 并根据该下行信道传输矩阵， 以及预先配置的确定 CQI时所依据的 PDSCH传输方式确定 CQI并上报，从而实现了基于 非 PMI反馈的传输实现基于 CSI-RS的信道质量信息测量与上报。其 中， 本发明实施例假设 PDSCH按照 Ws方式传输， 从而 CQI确定过 程筒单易行。 本领域技术人员可以理解实施例中的装置中的模块可以按照实 施例描述进行分布于实施例的装置中，也可以进行相应变化位于不同 于本实施例的一个或多个装置中。上述实施例的模块可以合并为一个 模块， 也可以进一步拆分成多个子模块。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解 到本发明可借助软件加必需的通用硬件平台的方式来实现， 当然也可 以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解， 本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以 软件产品的形式体现出来， 该计算机软件产品存储在一个存储介质 中， 包括若干指令用以使得一台终端设备（可以是手机，个人计算机, 服务器， 或者网络设备等）执行本发明各个实施例所述的方法。
以上所述仅是本发明的优选实施方式， 应当指出， 对于本技术领 域的普通技术人员来说， 在不脱离本发明原理的前提下， 还可以做出 若干改进和润饰， 这些改进和润饰也应视本发明的保护范围。

Claims

权利要求
1、 一种信道质量信息的上报方法， 其特征在于， 包括： 用户设备根据信道状态信息导频 CSI-RS 的配置信息测量 CSI-RS, 获得下行信道传输矩阵； 所述用户设备根据确定信道质量指示 CQI 时所依据的物理下行 共享信道 PDSCH传输方式， 以及测量得到的下行信道传输矩阵， 确 定频域上报单位的 CQI, 其中， 所述 PDSCH传输方式， 包括： 假设
Figure imgf000011_0001
基站按照 ： W .s的方式将 PDSCH的数据映射到 P个 CSI-RS端
1) 口上去； 其中， W为 P x l维矩阵， 且在上报 CQI之前 W为用户设 备及网络侧确知； 所述用户设备向网络侧上报确定出的 CQI。
2、 如权利要求 1所述的方法， 其特征在于， 所述用户设备上报
CQI的模式为以下之一：
物理上行控制信道 PUCCH上 模式 1-0;
PUCCH上报模式 2-0;
物理上行共享信道 PUSCH上报模式 2-0;
PUSCH上报模式 3-0。
3、 如权利要求 1至 2任一项所述的方法， 其特征在于， 所述用 户设备通过广播方式获得所述 CSI-RS的配置信息。
4、 一种用户设备， 其特征在于， 包括： 测量模块， 用于根据 CSI-RS的配置信息测量 CSI-RS, 获得下行 信道传输矩阵； 确定模块， 用于根据所述测量模块测量得到的下行信道传输矩 阵， 以及确定信道质量指示 CQI时所依据的 PDSCH传输方式， 确定 频域上报单位的 CQI; 上报模块， 用于向网络侧上报所述确定模块确定出的 CQI; 存储模块，用于存储所述 PDSCH传输方式的信息，所述 PDSCH
Figure imgf000012_0001
传输方式包括：假设基站按照 W · s的方式将 PDSCH的数据映
1) 射到 P个 CSI-RS端口上去； 其中， W为 P X 1维矩阵，且在上 CQI 之前 W为用户设备及网络侧确知。
5、 如权利要求 4所述的用户设备， 其特征在于， 所述上报模块 上报 CQI的模式为以下之一：
物理上行控制信道 PUCCH上4艮模式 1-0;
PUCCH上报模式 2-0;
物理上行共享信道 PUSCH上4艮模式 2-0;
PUSCH上报模式 3-0
6、 如权利要求 4至 5任一项所述的用户设备， 其特征在于， 还 包括： 获取模块， 用于通过广播方式获得所述 CSI-RS的配置信息。
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