WO2012122912A1 - 一种解调导频物理资源块绑定解调的方法及系统 - Google Patents

一种解调导频物理资源块绑定解调的方法及系统 Download PDF

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Publication number
WO2012122912A1
WO2012122912A1 PCT/CN2012/072036 CN2012072036W WO2012122912A1 WO 2012122912 A1 WO2012122912 A1 WO 2012122912A1 CN 2012072036 W CN2012072036 W CN 2012072036W WO 2012122912 A1 WO2012122912 A1 WO 2012122912A1
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Prior art keywords
demodulation
channel estimation
receiving side
downlink control
control information
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PCT/CN2012/072036
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English (en)
French (fr)
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郭森宝
孙云锋
苟伟
任敏
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中兴通讯股份有限公司
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Publication of WO2012122912A1 publication Critical patent/WO2012122912A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/0204Channel estimation of multiple channels

Definitions

  • the present invention relates to a Long Term Evolution Advanced System (LTE-Advanced), and more particularly to a method and system for demodulation based on demodulation pilot physical resource block binding in LTE-Advanced. Background technique
  • CRS Common Reference Signal
  • the UE User Equipment, User Equipment
  • the UE can measure the channel through CRS. Therefore, the UE is determined to perform cell reselection and handover to the target cell, and the channel quality is measured in the UE connection state.
  • the interference level is high, the physical layer may disconnect through the high-level related radio link connection failure signaling.
  • CSI-RS channel state information reference signal
  • DMRS demodulation reference
  • PMI Precoding Matrix Indicator
  • CQI Channel Quality Indicator
  • the distribution of CSI-RS in both the time domain and the frequency domain is sparse, and it is guaranteed that only one CSI-RS pilot density per antenna port of the serving cell is included in one RB (Resource Block), and at the time The domain takes a multiple of 5 ms as the period of the CSI-RS.
  • the sparse CSI-RS can support the configuration of the eNodeB 8 antenna, and advantageously supports the proximity cell measurement configuration.
  • the pilot mapping pattern of the CSI-RS is adopted at the 3GPP 61bis standard conference, and the pilot mapping pattern between different cells and different antennas of the same cell is specified.
  • the use of PRB can indeed bring greater channel estimation accuracy gain, thereby increasing the average throughput of the system, and the gain of this throughput is high in the way that the eNodeB adopts SU-MIMO for the UE.
  • the rank transmission is more obvious.
  • precoding is performed based on subcarriers or independent PRBs.
  • TM9 transmission mode 9
  • the UE will perform PRB Bundling to combine the DMRSs on multiple PRBs. Channel estimation and demodulation.
  • DCI downlink control information formats
  • DCI Format 1 A is a TM9-type Fallback mode
  • CRS-based demodulation transmit diversity (TxD) is supported under this DCI Format 1A.
  • MBSFN Multicast Broadcast Single Frequency Network
  • the Fallback mode is dynamically configured, that is, when the base station (eNodeB) finds that the channel is abruptly degraded at a certain point in time, or the CQI and PMI feedback are not accurate, the Fallback mode is considered.
  • the RRC signaling accuracy may be required to be guaranteed.
  • the RRC signaling accuracy may be required to be guaranteed by transmitting radio resource control (RRC) signaling to notify the UE that the transmission mode needs to be reconfigured. If the work is under TM9 and the UE is required to feedback PMI/CQI in the semi-static configuration, then the UE needs to perform joint channel estimation.
  • RRC radio resource control
  • the UE If it works in DCI Format 1A, it is not necessary for the UE to demodulate with CRS.
  • the above PRB Bundling is limited, which reduces the implementation flexibility of the UE and increases the implementation complexity of the UE, because the UE needs additional judgment to determine whether Bundling is needed. If the MBSFN sub-frame is working at this time, since only data or signaling can be sent by port 7, in this case, the distributed physical (VR) of the VRB (Virtual Resource Block) is not allowed.
  • the resource block to the virtual resource block is mapped in such a way that only the base and 1A are used to allocate resources by using the resource allocation mode type 2, which is bound to make the multiple resources that are scored to one UE continuous.
  • the main object of the present invention is to provide a method and system for demodulating pilot physical resource block binding demodulation, which is used to solve the problem that the PRB binding greatly limits the frequency diversity gain, and in the Fallback mode, The gain of PRB binding in high-rank transmission is not obvious, and it also affects the frequency diversity gain, which makes the reliability of Fallback mode degraded.
  • the technical solution of the present invention is achieved as follows:
  • a method for demodulating pilot physical resource block binding demodulation comprising:
  • the network side indicates whether the receiving side performs joint channel estimation and demodulation according to the precoding resource group PRG by configuring the transmission mode, the downlink control information format, and the feedback mode.
  • the network side configures the transmission mode adopted by the receiving side to be the transmission mode 9; the network side configuration receiving side needs to feed back the precoding matrix index PMI/channel quality information indicating CQI during feedback; the network side utilizes the configured downlink
  • the control information format implicitly indicates whether the receiving side performs joint channel estimation and demodulation according to the precoding resource group PRG.
  • the indicating whether the receiving side performs joint channel estimation and demodulation according to the precoding resource group PRG is specifically:
  • the receiving side is instructed to use demodulation pilots or to use common pilots for channel estimation and demodulation, and to indicate that the receiving side performs joint channel estimation and demodulation of multiple physical resource blocks according to or not in units of precoding resource groups PRG.
  • the network side uses the configured downlink control information format to implicitly indicate whether the receiving side performs joint channel estimation and demodulation according to the precoding resource group PRG: the network side uses the downlink control information format. 2C implicitly indicates that the receiving side uses the demodulation pilot for channel estimation and demodulation when performing demodulation, and instructs the receiving side to perform joint channel estimation and solution of multiple physical resource blocks according to the precoding resource group PRG. Tune.
  • the network side uses the configured downlink control information format to implicitly indicate whether the receiving side performs joint channel estimation and demodulation according to the precoding resource group PRG: the network side is configured in a conventional NORMAL sub
  • the downlink control information format 1A is used to implicitly indicate that the receiving side uses the common pilot for channel estimation and demodulation when performing demodulation, and indicates that the receiving side does not need to perform multiple physics according to the precoding resource group PRG. Joint channel estimation and demodulation of resource blocks.
  • the network side uses the configured downlink control information format to implicitly indicate
  • the method for performing joint channel estimation and demodulation according to the precoding resource group PRG is: when the network side is configured in a multicast broadcast single frequency network MBSFN subframe, the downlink control information format 1A is used to implicitly indicate reception.
  • the side uses demodulation pilots for channel estimation and demodulation when demodulating, and indicates that the receiving side does not need to perform joint channel estimation and demodulation of multiple physical resource blocks in units of precoding resource groups PRG.
  • the present invention further provides a system for demodulating and demodulating a pilot physical resource block binding demodulation, including a network side and a receiving side, according to an embodiment of the present invention.
  • the network side is configured to indicate, by configuring the transmission mode, the downlink control information format, and the feedback mode, whether the receiving side performs joint channel estimation and demodulation according to the precoding resource group PRG;
  • the receiving side is configured to receive the configuration on the network side, and determine whether to perform joint channel estimation and demodulation according to the precoding resource group PRG according to the configuration on the network side.
  • the present invention dynamically and flexibly adjusts the channel estimation manner according to different downlink control information formats, thereby fully utilizing the channel estimation gain of the PRB binding and the frequency diversity gain of the No-PRB binding, thereby improving the system. Reliability and average throughput.
  • FIG. 1 is a flowchart of a demodulation method for demodulating pilot physical resource block binding according to the present invention
  • FIG. 2 is a flowchart of a demodulation method for demodulating pilot physical resource block binding according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a demodulation method for demodulating pilot physical resource block binding provided by the present invention, where the method includes:
  • Step 101 The network side configures the transmission mode 9 adopted by the receiving side, and configures the receiving side to be in feedback. Feedback PMI/CQI, and implicitly indicating whether the receiving side performs joint channel estimation and demodulation according to the PRG through the configured downlink control information format;
  • Step 102 The receiving side receives and applies the configuration of the transmission mode and the feedback mode on the network side, and determines whether to use the demodulation pilot or the common pilot for channel estimation and demodulation according to the downlink control information format configured by the network side. And determining joint channel estimation and demodulation of multiple physical resource blocks according to or not in units of PRGs.
  • FIG. 2 is a detailed flowchart of a demodulation method for demodulating pilot physical resource block binding according to an embodiment of the present invention, and the detailed steps are as follows:
  • Step 201 The network side configures the transmission mode adopted by the receiving side. 9. Configure the receiving side to feed back the PMI/CQI during feedback, configure the downlink control information format, and then send the configuration to the receiving side.
  • the downlink control information format includes a downlink control information format 2C or a downlink control information format 1A;
  • the network side refers to a macro eNodeB, a micro base station (Pico), a relay station, a home eNodeB, etc.
  • the receiving side refers to a UE, a micro base station (Pico), a relay station (Relay), Home base station (Home eNodeB), etc.;
  • Step 202 The receiving side receives and applies the configuration on the network side.
  • Step 203 The receiving side performs a physical downlink control channel blind detection on the subframe.
  • the downlink control information format obtained by the blind detection is the downlink control information format 2C (DCI Format 2C)
  • step 204 is performed, and the downlink control information obtained by the blind detection is performed.
  • the format is the downlink control information format 1A
  • step 205 is performed;
  • Step 204 The receiving side performs demodulation pilot DMRS for channel estimation and demodulation, and performs joint channel estimation and demodulation of multiple physical resource blocks according to PRG.
  • Step 205 The receiving side determines the subframe type for performing the physical downlink control channel blind detection. If it is a normal (normal) subframe, step 206 is performed; if it is a multicast broadcast single frequency network (MBSFN) Sub-frame, step 207 is performed;
  • MMSFN multicast broadcast single frequency network
  • Step 206 The receiving side adopts a common pilot CRS when performing demodulation, and does not need to perform channel estimation and demodulation according to a PRG unit;
  • Step 207 The receiving side uses the demodulation pilot DMRS when performing demodulation, and does not need to perform channel estimation and demodulation in units of PRG.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the network side configures the transmission mode used by the network side to transmit data to the receiving side as the transmission mode 9 through the RRC signaling, and configures the feedback mode on the receiving side to be the feedback PMI/CQI, and when the network side schedules the receiving side in the downlink subframe,
  • the downlink control information format 2C is used to implicitly indicate that the receiving side uses the demodulation pilot to perform channel estimation and demodulation when performing demodulation and instructs the receiving side to perform joint channel estimation and solution of multiple physical resource blocks according to the PRG unit. Tune.
  • the receiving side obtains the transmission mode of the data transmitted by the network side as the transmission mode 9 by receiving the RRC signaling sent by the network side, and obtains the PMI/CQI when the network side configuration needs to feed back the PMI/CQI by receiving the RRC signaling sent by the network side.
  • the physical downlink control channel is blindly detected, if the DCI format 2C is used for the downlink control information obtained by the blind detection, the demodulation pilot is used for channel estimation and demodulation during demodulation, and multiple physical units are performed according to the PRG. Joint channel estimation and demodulation of resource blocks.
  • the channel estimation mode in the Normal mode, is dynamically and flexibly adjusted according to different downlink control information formats, thereby fully utilizing the channel estimation gain of the PRB binding, thereby improving system reliability and average throughput.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the network side configures the network side to transmit data to the receiving side through the RRC signaling, and uses the transmission mode 9 to configure the receiving side to feed back the PMI/CQI through the high-layer signaling.
  • the network side schedules the receiving side in the Normal downlink subframe, the downlink control is used.
  • the information format 1A implicitly indicates that the receiving side uses the common pilot for channel estimation and demodulation when performing demodulation, and indicates that the receiving side does not need to follow
  • the PRG performs joint channel estimation and demodulation of multiple physical resource blocks in units.
  • the receiving side obtains the transmission mode of the data transmitted by the network side as the transmission mode 9 by receiving the RRC signaling sent by the network side, and obtains the PMI/CQI when the network side configuration needs feedback PMI/CQI by receiving the RRC signaling sent by the network side.
  • the frame is subjected to the blind detection of the physical downlink control channel, if the downlink control information obtained by the blind detection is DCI Format 1A, the common pilot is used for channel estimation and demodulation during demodulation and does not need to be performed in units of PRG. Joint channel estimation and demodulation of physical resource blocks.
  • the channel estimation mode is dynamically adjusted according to different downlink control information formats, thereby fully utilizing the frequency diversity gain of the No-PRB binding, thereby improving system reliability and average throughput.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the network side configures the network side to transmit data to the receiving side through RRC signaling, and uses the transmission mode 9 to configure the receiving side to feed back PMI/CQI through the high-layer signaling.
  • the network side schedules the receiving side in the MBSFN downlink subframe, the downlink control is used.
  • the information format 1A implicitly indicates that the receiving side uses the demodulation pilot for channel estimation and demodulation when performing demodulation and indicates that the receiving side does not need to perform joint channel estimation and demodulation of multiple physical resource blocks in units of PRG.
  • the receiving side obtains the transmission mode of the data transmitted by the network side as the transmission mode 9 by receiving the RRC signaling sent by the network side, and obtains the PMI/CQI when the network side configuration needs to feed back the PMI/CQI by receiving the RRC signaling sent by the network side, in the pair of MBSFN
  • the frame is subjected to blind detection of the physical downlink control channel
  • the DCI Format 1A is used for the downlink control information obtained by the blind detection
  • the channel is estimated and demodulated by using the demodulation pilot during demodulation and does not need to be in units of PRG. Perform joint channel estimation and demodulation of multiple physical resource blocks.
  • the example dynamically and flexibly adjusts the channel estimation mode according to different downlink control information formats, thereby fully utilizing the frequency diversity gain of the No-PRB binding, thereby improving system reliability and average throughput.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention.
  • the configuration information notification scheme adopted herein and the set of pilots should be included in the scope of protection of the present invention.
  • the present invention dynamically and flexibly adjusts the channel estimation manner according to different downlink control information formats, thereby fully utilizing the channel estimation gain of the PRB binding and the frequency diversity gain of the No-PRB binding, thereby improving the system. Reliability and average throughput.

Abstract

一种解调导频物理资源块绑定解调的方法及系统,涉及LTE技术领域。本发明的网络侧通过配置传输模式、下行控制信息格式和反馈模式来指示接收侧是否按照预编码资源组PRG来进行联合信道估计和解调。本发明在Normal和Fallback模式下,根据不同的下行控制信息格式,动态灵活的调整信道估计方式,从而充分利用PRB绑定的信道估计增益和No-PRB绑定的频率分集增益,提高了系统的可靠性和平均吞吐量。

Description

一种解调导频物理资源块绑定解调的方法及系统 技术领域
本发明涉及长期演进高级系统 ( Long term evolution advanced system, LTE-Advanced ), 具体地说, 是涉及 LTE-Advanced中基于解调导频物理资 源块绑定解调的方法及系统。 背景技术
在 LTE Release8/9 中为了对信道的质量进行测量和对接收的数据符号 进行解调设计了 CRS ( Common Reference Signal,公共参考信号), UE(User Equipment, 用户设备)可以通过 CRS进行信道的测量, 从而决定 UE进行 小区重选和切换到目标小区, 并且在 UE连接状态进行信道质量的测量, 当 干扰级别较高时, 物理层可以通过高层相关的无线链路连接失败信令断开 连接。 在 LTE R10中为了进一步提高小区平均的频谱利用率和小区边缘频 谱利用率以及各个 UE的吞吐率, 分别定义了两种参考信号: CSI-RS (信道 状态信息参考信号)和 DMRS (解调参考信号), 其中, CSI-RS用于信道的 测量, 通过对 CSI-RS 的测量可以计算出 UE 需要向 eNB 反馈的 PMI ( Precoding Matrix Indicator, 预编码矩阵索引)、 CQI ( Channel Quality Indicator, 信道质量信息指示) 以及 RI(Rank Indicator, 秩指示)。 CSI-RS 在时域和频域的分布都是稀疏的, 而且要保证在一个 RB(Resource Block, 子帧)内只包含服务小区每个天线端口一个 CSI-RS 的导频密度, 而且在时 域以 5ms的倍数来作为 CSI-RS的周期。稀疏的 CSI-RS可以支持 eNodeB 8 天线的配置, 而且有利地支持了临小区测量配置。 在 3GPP 61bis标准会议 上通过了 CSI-RS的导频映射图样,规定了不同小区和同一个小区不同天线 间的导频映射图样。 在先前的讨论中,考虑到 DMRS信道估计的准确性,要求在使用 DMRS 解调时要考虑进行多个 PRB ( Precoding Resource Block, 预编码资源块 )的 绑定( Bundling ), 从而可以多个 PRB联合进行信道估计, 从而提高信道估 计的准确性, 经过长时间的讨论采用以 PRG ( Precoding Resource Group, 预编码资源组) 为单位进行 PRB的绑定, PRG的大小如表 1所示。
Figure imgf000004_0001
Figure imgf000004_0002
经过会议各家公司的仿真, 利用 PRB确实可以带来较大的信道估计准 确性增益, 从而提高了系统的平均吞吐量, 而且这种吞吐量的增益在 eNodeB对 UE采用 SU-MIMO的方式高秩传输时更加明显。考虑到在 TDD 和开环 MIMO ( Multiple-Input Multiple-Out-put, 多输入多输出) 的方式下 要利用频率分集增益, 要基于子载波或者独立的 PRB进行预编码。 最终考 虑的信令的开销和性能增益的基础上决定当采用发送模式 9 ( TM9 ), 如果 UE配置了 PMI/RI反馈, 贝' J UE要进行 PRB Bundling来对多个 PRBs上的 DMRS进行联合信道估计和解调。
经过最新会议的讨论 TM9 方式下配置了两种下行控制信息格式 ( DCI ),其中 DCI Format 1 A是 TM9—种 Fallback模式,在这种 DCI Format 1A下支持基于 CRS的解调的发送分集(TxD )方式, 而且当工作在多播广 播单频网络 (Multicast Broadcast Single Frequency Network, MBSFN)子帧时 可以利用端口 7来发送数据。
两者综合起来, 势必带来的问题就是 Fallback模式是动态配置的, 也 就是当基站(eNodeB )发现某个时间点信道急剧变差, 或者 CQI和 PMI 反馈不准确时, 就会考虑利用 Fallback模式来传输数目, Fallback模式一方 面可以用来发送一些数据信息, 一方面可以发送无线资源控制 (Radio Resource Control, RRC )信令, 从而通知 UE需要重新配置发送模式, 这 时 RRC信令的准确性势必需要保证。 如果这时工作在 TM9下, 而且先前 半静态配置了 UE需要反馈 PMI/CQI, 这时 UE需要进行联合信道估计, 如 果这时工作在 DCI Format 1A下, UE用 CRS来解调是没有必要用以上的 PRB Bundling来限制的 , 这样会减少 UE的实施灵活性, 而且增加了 UE的 实施复杂度, 因为 UE需要额外的判断是否需要 Bundling。如果这时工作在 MBSFN子帧, 由于只能用端口 7来发送数据或者信令, 所以在这种情况下 是不容许 VRB( Virtual Resource Block , 虚拟资源块)的采用分布式的 ( distributed )物理资源块到虚拟资源块这种映射方式的, 所以只能采用基 而且 1A这种方式是利用资源分配方式类型 2来分配资源的,这样势必会使 得分给一个 UE的多个资源是连续的。 从而造成工作在 1A下 UE势必要按 照 PRB Bundling的大小来进行多个 PRB联合信道估计。这种方式势必会影 响 UE的解调性能, 因为在 Fallback模式下要充分利用频率分集增益, 而且 由于 PMI/CQI的不准确性, 要尽量遍历可能的 PMI进行处理, 从而获得码 本级的分集增益。 由于 PRB Bundling会极大的限制频率分集增益, 而且 Fallback模式只利用端口 7来发送数目, 这样 PRB Bundling在高秩传输的 增益并没有明显的体现, 还会影响到频率分集增益, 从而使得 Fallback模 式的可靠性下降。 发明内容
有鉴于此, 本发明的主要目的在于提供一种解调导频物理资源块绑定 解调的方法及系统, 用于解决 PRB绑定会极大的限制频率分集增益, 而且 在 Fallback模式下, PRB绑定在高秩传输的增益没有明显体现, 还会影响 频率分集增益, 从而使得 Fallback模式的可靠性下降的问题。 为达到上述目的, 本发明的技术方案是这样实现的:
一种解调导频物理资源块绑定解调的方法, 该方法包括:
网络侧通过配置传输模式、 下行控制信息格式和反馈模式来指示接收 侧是否按照预编码资源组 PRG来进行联合信道估计和解调。
进一步地, 网络侧配置接收侧采用的传输模式为传输模式 9; 所述网络 侧配置接收侧在反馈时需要反馈预编码矩阵索引 PMI/信道质量信息指示 CQI;所述网络侧利用所配置的下行控制信息格式来隐性的指示接收侧是否 按照预编码资源组 PRG来进行联合信道估计和解调。
进一步地, 所述指示接收侧是否按照预编码资源组 PRG来进行联合信 道估计和解调具体为:
指示接收侧采用解调导频或采用公共导频进行信道估计和解调, 并指 示接收侧按照或不按照预编码资源组 PRG为单位进行多个物理资源块的联 合信道估计和解调。
进一步地, 所述网络侧利用所配置的下行控制信息格式来隐性的指示 接收侧是否按照预编码资源组 PRG来进行联合信道估计和解调的方法为: 所述网络侧利用下行控制信息格式 2C 来隐性的指示接收侧在进行解 调时采用解调导频进行信道估计和解调, 并且指示接收侧要按照预编码资 源组 PRG为单位进行多个物理资源块的联合信道估计和解调。
进一步地, 所述网络侧利用所配置的下行控制信息格式来隐性的指示 接收侧是否按照预编码资源组 PRG来进行联合信道估计和解调的方法为: 所述网络侧配置在常规 Normal子帧时, 利用下行控制信息格式 1A来 隐性的指示接收侧在进行解调时采用公共导频进行信道估计和解调, 并且 指示接收侧不需要按照预编码资源组 PRG为单位进行多个物理资源块的联 合信道估计和解调。
进一步地, 所述网络侧利用所配置的下行控制信息格式来隐性的指示 接收侧是否按照预编码资源组 PRG来进行联合信道估计和解调的方法为: 所述网络侧配置在多播广播单频网络 MBSFN子帧时,利用下行控制信 息格式 1A来隐性的指示接收侧在进行解调时采用解调导频进行信道估计 和解调, 并且指示接收侧不需要按照预编码资源组 PRG为单位进行多个物 理资源块的联合信道估计和解调。
基于本发明实施例, 本发明还提出一种解调导频物理资源块绑定解调 的系统, 包括网络侧及接收侧,
网络侧, 用于通过配置传输模式、 下行控制信息格式和反馈模式来指 示接收侧是否按照预编码资源组 PRG来进行联合信道估计和解调;
接收侧, 用于接收网络侧的配置, 并按照网络侧的配置来确定是否按 照预编码资源组 PRG来进行联合信道估计和解调。
本发明在 Normal和 Fallback模式下, 根据不同的下行控制信息格式, 动态灵活的调整信道估计方式, 从而充分利用 PRB绑定的信道估计增益和 No-PRB绑定的频率分集增益, 提高了系统的可靠性和平均吞吐量。 附图说明
图 1为本发明提供的解调导频物理资源块绑定的解调方法流程图; 图 2 为本发明具体实施例提供的解调导频物理资源块绑定的解调方法 流程图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚明白, 以下举实施例并 参照附图, 对本发明进一步详细说明。
图 1 为本发明提供的解调导频物理资源块绑定的解调方法流程图, 该 方法包括:
步驟 101、 网络侧配置接收侧采用的传输模式 9, 配置接收侧在反馈时 反馈 PMI/CQI, 并通过配置的下行控制信息格式来隐性的指示接收侧是否 按照 PRG来进行联合信道估计和解调;
步驟 102、 接收侧接收及应用网络侧的关于传输模式和反馈模式的配 置, 并根据网络侧配置的下行控制信息格式来确定是采用解调导频还是采 用公共导频进行信道估计和解调, 及确定按照或不按照 PRG为单位进行多 个物理资源块的联合信道估计和解调。
图 2 为本发明一具体实施例提供的解调导频物理资源块绑定的解调方 法的细化流程图, 详细步驟如下:
步驟 201、 网络侧配置接收侧采用的传输模式 9, 配置接收侧在反馈时 反馈 PMI/CQI, 并对下行控制信息格式进行配置, 然后将配置发送给接收 侧;
所述下行控制信息格式包括下行控制信息格式 2C 或下行控制信息格 式 1A;
所述网络侧指宏基站( Macro eNodeB )、微基站( Pico ),中继站( Relay )、 家庭基站(Home eNodeB )等, 所述的接收侧指 UE、 微基站(Pico )、 中继 站( Relay )、 家庭基站( Home eNodeB )等;
步驟 202、 接收侧接收及应用网络侧的配置;
步驟 203、接收侧对子帧进行物理下行控制信道盲检, 当盲检得到的下 行控制信息格式为下行控制信息格式 2C ( DCI Format 2C ) 时, 执行步驟 204, 当盲检得到的下行控制信息格式为下行控制信息格式 1A时, 执行步 驟 205;
步驟 204、 接收侧在进行解调时采用解调导频 DMRS进行信道估计和 解调, 并且按照 PRG为单位进行多个物理资源块的联合信道估计和解调。
步驟 205、 接收侧对进行物理下行控制信道盲检的子帧类型进行判断, 若为常规( Normal )子帧,则执行步驟 206;若为多播广播单频网络( MBSFN ) 子帧, 则执行步驟 207;
步驟 206、 接收侧在进行解调时采用公共导频 CRS且不需要按照 PRG 为单位进行信道估计和解调;
步驟 207、接收侧在进行解调时采用解调导频 DMRS且不需要按照 PRG 为单位进行信道估计和解调。
实施例一:
网络侧通过 RRC信令配置网络侧给接收侧发送数据采用的传输模式为 传输模式 9, 并且配置接收侧的反馈模式为需要反馈 PMI/CQI时, 当网络 侧在下行子帧调度接收侧时,利用下行控制信息格式 2C来隐性的指示接收 侧在进行解调时采用解调导频进行信道估计和解调并且指示接收侧要按照 PRG为单位进行多个物理资源块的联合信道估计和解调。
接收侧通过接收网络侧发送的 RRC信令, 获得网络侧发送数据的传输 模式为传输模式 9, 而且通过接收网络侧发送的 RRC信令获得网络侧配置 需要反馈 PMI/CQI时, 在对子帧进行物理下行控制信道盲检时, 如果盲检 得到下行控制信息采用的是 DCI Format 2C时,在进行解调时采用解调导频 进行信道估计和解调, 并且按照 PRG为单位进行多个物理资源块的联合信 道估计和解调。
该实施例中, 在 Normal模式下, 根据不同的下行控制信息格式, 动态 灵活的调整信道估计方式,从而充分利用 PRB绑定的信道估计增益,提高了 系统的可靠性和平均吞吐量。
实施例二:
网络侧通过 RRC信令配置网络侧给接收侧发送数据采用传输模式 9, 而且通过高层信令配置接收侧需要反馈 PMI/CQI, 当网络侧在 Normal下行 子帧中调度接收侧时,利用下行控制信息格式 1A来隐性的指示接收侧在进 行解调时采用公共导频进行信道估计和解调, 并且指示接收侧不需要按照 PRG为单位进行多个物理资源块的联合信道估计和解调。
接收侧通过接收网络侧发送的 RRC信令, 获得网络侧发送数据的传输 模式为传输模式 9, 而且通过接收网络侧发送的 RRC信令获得网络侧配置 需要反馈 PMI/CQI时, 在对 Normal子帧进行物理下行控制信道的盲检时, 如果盲检得到下行控制信息采用的是 DCI Format 1A时,在进行解调时采用 公共导频进行信道估计和解调并且不需要按照 PRG为单位进行多个物理资 源块的联合信道估计和解调。
该实施例中, 在 Fallback模式下, 根据不同的下行控制信息格式, 动 态灵活的调整信道估计方式, 从而充分利用 No-PRB绑定的频率分集增益, 提高了系统的可靠性和平均吞吐量。
实施例三:
网络侧通过 RRC信令配置网络侧给接收侧发送数据采用传输模式 9, 而且通过高层信令配置接收侧需要反馈 PMI/CQI, 当网络侧在 MBSFN下 行子帧中调度接收侧时,利用下行控制信息格式 1A来隐性的指示接收侧在 进行解调时采用解调导频进行信道估计和解调并且指示接收侧不需要按照 PRG为单位进行多个物理资源块的联合信道估计和解调。
接收侧通过接收网络侧发送的 RRC信令, 获得网络侧发送数据的传输 模式为传输模式 9, 而且通过接收网络侧发送的 RRC信令获得网络侧配置 需要反馈 PMI/CQI时,在对 MBSFN子帧进行物理下行控制信道的盲检时, 如果盲检得到下行控制信息采用的是 DCI Format 1A时,在进行解调时采用 及解调导频进行信道估计和解调并且不需要按照 PRG为单位进行多个物理 资源块的联合信道估计和解调。
该实例在 Fallback模式下, 根据不同的下行控制信息格式, 动态灵活 的调整信道估计方式, 从而充分利用 No-PRB绑定的频率分集增益, 提高 了系统的可靠性和平均吞吐量。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于 本领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精 神和原则之内, 所作的任何修改、 等同替换、 改进等。 本文采用的及诶套 导频的配置信息通知方案, 均应包含在本发明的保护范围之内。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。 工业实用性
本发明在 Normal和 Fallback模式下, 根据不同的下行控制信息格式, 动态灵活的调整信道估计方式, 从而充分利用 PRB绑定的信道估计增益和 No-PRB绑定的频率分集增益, 提高了系统的可靠性和平均吞吐量。

Claims

权利要求书
1、 一种解调导频物理资源块绑定解调的方法, 该方法包括: 网络侧通过配置传输模式、 下行控制信息格式和反馈模式来指示接收 侧是否按照预编码资源组 PRG来进行联合信道估计和解调。
2、 根据权利要求 1所述的方法, 其中,
网络侧配置接收侧采用的传输模式为传输模式 9;
所述网络侧配置接收侧在反馈时需要反馈预编码矩阵索引 PMI/信道质 量信息指示 CQI;
所述网络侧利用所配置的下行控制信息格式来隐性的指示接收侧是否 按照预编码资源组 PRG来进行联合信道估计和解调。
3、 根据权利要求 2所述的方法, 其中, 所述指示接收侧是否按照预编 码资源组 PRG来进行联合信道估计和解调具体为:
指示接收侧采用解调导频或采用公共导频进行信道估计和解调, 并指 示接收侧按照或不按照预编码资源组 PRG为单位进行多个物理资源块的联 合信道估计和解调。
4、 根据权利要求 2或 3所述的方法, 其中, 所述网络侧利用所配置的 下行控制信息格式来隐性的指示接收侧是否按照预编码资源组 PRG来进行 联合信道估计和解调的方法为:
所述网络侧利用下行控制信息格式 2C 来隐性的指示接收侧在进行解 调时采用解调导频进行信道估计和解调, 并且指示接收侧要按照预编码资 源组 PRG为单位进行多个物理资源块的联合信道估计和解调。
5、 根据权利要求 2或 3所述的方法, 其中, 所述网络侧利用所配置的 下行控制信息格式来隐性的指示接收侧是否按照预编码资源组 PRG来进行 联合信道估计和解调的方法为: 所述网络侧配置在常规 Normal子帧时, 利用下行控制信息格式 1A来 隐性的指示接收侧在进行解调时采用公共导频进行信道估计和解调, 并且 指示接收侧不需要按照预编码资源组 PRG为单位进行多个物理资源块的联 合信道估计和解调。
6、 根据权利要求 2或 3所述的方法, 其中, 所述网络侧利用所配置的 下行控制信息格式来隐性的指示接收侧是否按照预编码资源组 PRG来进行 联合信道估计和解调的方法为:
所述网络侧配置在多播广播单频网络 MBSFN子帧时,利用下行控制信 息格式 1A来隐性的指示接收侧在进行解调时采用解调导频进行信道估计 和解调, 并且指示接收侧不需要按照预编码资源组 PRG为单位进行多个物 理资源块的联合信道估计和解调。
7、 一种解调导频物理资源块绑定解调的系统, 包括网络侧及接收侧: 网络侧, 用于通过配置传输模式、 下行控制信息格式和反馈模式来指 示接收侧是否按照预编码资源组 PRG来进行联合信道估计和解调;
接收侧, 用于接收网络侧的配置, 并按照网络侧的配置来确定是否按 照预编码资源组 PRG来进行联合信道估计和解调。
8、 根据权利要求 7所述的系统, 其中,
所述网络侧在配置接收侧采用传输模式 9 并且配置接收侧需要反馈 PMI/CQI时,利用下行控制信息格式 2C来隐性的指示接收侧在进行解调时 采用解调导频进行信道估计和解调, 并且指示接收侧要按照预编码资源组 PRG为单位进行多个物理资源块的联合信道估计和解调;
所述接收侧获得网络侧配置的传输模式为传输模式 9,反馈模式为需要 反馈 PMI/CQI时, 在进行对物理下行控制信道的盲检时, 如果盲检得到下 行控制信息采用的是下行控制信息格式 2C时,在进行解调时采用解调导频 进行信道估计和解调, 并且按照预编码资源组 PRG为单位进行多个物理资 源块的联合信道估计和解调。
9、 根据权利要求 7所述的系统, 其中,
网络侧在配置接收侧采用传输模式 9, 配置接收侧需要反馈 PMI/CQI, 并且配置在 Normal子帧时, 利用下行控制信息格式 1A来隐性的指示接收 侧在进行解调时采用公共导频进行信道估计和解调, 并且指示接收侧不需 要按照预编码资源组 PRG为单位进行多个物理资源块的联合信道估计和解 调;
所述接收侧获得网络侧配置的传输模式为传输模式 9,反馈模式为需要 反馈 PMI/CQI, 并且在 Normal子帧对物理下行控制信道进行盲检时, 如果 盲检得到下行控制信息采用的是 DCI Format 1A, 则在解调时采用公共导频 进行信道估计和解调, 并且不需要按照预编码资源组 PRG为单位进行多个 物理资源块的联合信道估计和解调。
10、 根据权利要求 7所述的系统, 其中,
所述网络侧在配置接收侧采用传输模式 9 , 配置接收侧需要反馈 PMI/CQI, 并且配置在 MBSFN子帧时, 利用下行控制信息格式 1A来隐性 的指示接收侧在进行解调时采用解调导频进行信道估计和解调并且指示接 收侧不需要按照预编码资源组 PRG为单位进行多个物理资源块的联合信道 估计和解调;
所述接收侧获得网络侧配置的传输模式为传输模式 9,反馈模式为需要 反馈 PMI/CQI, 并且在 MBSFN子帧对物理下行控制信道进行盲检时, 如 果盲检得到下行控制信息采用的是 DCI Format 1A, 则在解调时采用解调导 频进行信道估计和解调, 并且不需要按照预编码资源组 PRG为单位进行多 个物理资源块的联合信道估计和解调。
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