WO2014019175A1

WO2014019175A1 - Channel estimation method, user equipment, and base station

Info

Publication number: WO2014019175A1
Application number: PCT/CN2012/079515
Authority: WO
Inventors: 夏亮; 张秀军; 张鑫; 任晓涛; 王京
Original assignee: 华为技术有限公司
Priority date: 2012-08-01
Filing date: 2012-08-01
Publication date: 2014-02-06
Also published as: CN104145439A

Abstract

Embodiments of the present invention provide a channel estimation method, a user equipment, and a base station. The method comprises: determining a first coefficient set according to multiple channel state information reference signals (CSI-RSs), the first coefficient set comprising multiple first coefficients, and the first coefficient indicating a downlink channel statistical property; determining a second coefficient according to the first coefficient set, the second coefficient being a channel estimation coefficient; and performing channel estimation according to the second coefficient and a demodulation reference signal (DMRS). In the embodiments of the present invention, the first coefficient set is determined according to multiple CSI-RSs, and the second coefficient used for channel estimation is determined according to the first coefficient set, so that channel estimation in the case of multiple CSI-RSs can be implemented.

Description

信道估计的方法、用户设备和基站技术领域 Channel estimation method, user equipment and base station

本发明涉及通信领域，并且具体地，涉及信道估计的方法、用户设备和基站。背景技术 The present invention relates to the field of communications and, in particular, to a method of channel estimation, a user equipment and a base station. Background technique

在无线通信网络中，为了消除信道传输特性等的影响因素，用户设备 ( User Equipment, UE )需要在解调数据时进行信道估计。例如，在长期演进（ Long Term Evolution , LTE ) ***中， UE可以利用基站通知的信道状态信息参考信号（ Channel-State Information Reference Signal, CSI-RS )和 DMRS 进行信道估计。 In a wireless communication network, in order to eliminate influence factors such as channel transmission characteristics, a User Equipment (UE) needs to perform channel estimation when demodulating data. For example, in a Long Term Evolution (LTE) system, a UE may perform channel estimation using a Channel-State Information Reference Signal (CSI-RS) and a DMRS notified by a base station.

在协同多点收发 ( Coordinated Multiple Point Transmission and Reception, CoMP ) ***中，多个接入点（ AP, Access Point )可以同时与一个 UE进行通信。这样 UE可能会接收到多个 CSI-RS, 每个 CSI-RS可以映射到一个或多个接入点上。 DMRS的每个天线端口也可以映射到一个或多个接入点上。因此在多个 CSI-RS的情况下，无法直接利用原有的方法进行信道估计。发明内容 In a Coordinated Multiple Point Transmission and Reception (CoMP) system, multiple access points (APs) can communicate with one UE at the same time. In this way, the UE may receive multiple CSI-RSs, and each CSI-RS may be mapped to one or more access points. Each antenna port of the DMRS can also be mapped to one or more access points. Therefore, in the case of multiple CSI-RSs, channel estimation cannot be directly performed using the original method. Summary of the invention

本发明实施例提供信道估计的方法、用户设备和基站，能够实现存在多个 CSI-RS情况下的信道估计。 The embodiments of the present invention provide a method for channel estimation, a user equipment, and a base station, which can implement channel estimation in the case of multiple CSI-RSs.

第一方面，提供了一种信道估计的方法，包括：根据多个信道状态信息参考信号 CSI-RS, 确定第一系数集合，该第一系数集合包括多个第一系数，该第一系数表示下行信道统计特性；根据该第一系数集合，确定第二系数，该第二系数为信道估计系数；根据该第二系数和解调参考信号 DMRS, 进行信道估计。 In a first aspect, a method for channel estimation is provided, including: determining, according to a plurality of channel state information reference signals CSI-RS, a first coefficient set, where the first coefficient set includes a plurality of first coefficients, the first coefficient representation a downlink channel statistical characteristic; determining, according to the first coefficient set, a second coefficient, the second coefficient being a channel estimation coefficient; performing channel estimation according to the second coefficient and the demodulation reference signal DMRS.

结合第一方面，在第一种可能的实现方式中，下行信道统计特性包括下行信道的时域相关矩阵、频域相关矩阵、时延功率谱或多普勒功率谱。 In combination with the first aspect, in a first possible implementation, the downlink channel statistics feature includes a time domain correlation matrix of the downlink channel, a frequency domain correlation matrix, a delay power spectrum, or a Doppler power spectrum.

结合第一方面或第一方面的第一种可能的实现方式，在第二种可能的实现方式中，根据第一系数集合，确定第三系数集合，该第三系数集合包括至少一个第三系数，该第三系数为用于信道估计的候选系数；根据该 DMRS, 确定第四系数，该第四系数为用于信道估计的粗略参考系数；从该第三系数集合中选取与该第四系数距离最小的第三系数作为该第二系数，或者从该第三系数集合中选取与该第四系数相关值最大的第三系数作为该第二系数。 With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation, determining, according to the first set of coefficients, a third coefficient set, where the third coefficient set includes at least one third coefficient The third coefficient is a candidate coefficient for channel estimation; according to the DMRS, Determining a fourth coefficient, the fourth coefficient being a coarse reference coefficient for channel estimation; selecting, from the third coefficient set, a third coefficient having the smallest distance from the fourth coefficient as the second coefficient, or from the third coefficient A third coefficient having the largest correlation value with the fourth coefficient is selected as the second coefficient.

结合第一方面或第一方面的第一种可能的实现方式，在第三种可能的实现方式中，根据该第一系数集合，确定第三系数集合，该第三系数集合包括至少一个第三系数，该第三系数为用于信道估计的候选系数；从基站接收携带第一指示信息的动态信令，该第一指示信息用于指示该第三系数集合中的能够用作该第二系数的第三系数；将该能够用作该第二系数的第三系数作为该第二系数。 With reference to the first aspect or the first possible implementation manner of the first aspect, in a third possible implementation, determining, according to the first set of coefficients, a third coefficient set, where the third coefficient set includes at least one third a coefficient, the third coefficient is a candidate coefficient for channel estimation; receiving, from the base station, dynamic signaling that carries the first indication information, where the first indication information is used to indicate that the third coefficient set can be used as the second coefficient a third coefficient; the third coefficient that can be used as the second coefficient is used as the second coefficient.

结合第一方面的第二种可能的实现方式或第一方面的第三种可能的实现方式，在第四种可能的实现方式中，对该多个第一系数进行处理，确定该至少一个第三系数，其中，该对该多个第一系数进行处理采用以下处理方式中的至少一种：加权处理、平均处理和选择处理。 With reference to the second possible implementation of the first aspect or the third possible implementation of the first aspect, in a fourth possible implementation, the multiple first coefficients are processed to determine the at least one The three coefficients, wherein the processing the plurality of first coefficients adopts at least one of the following processing methods: weighting processing, averaging processing, and selection processing.

结合第一方面的第四种可能的实现方式，在第五种可能的实现方式中，该加权处理包括根据 CSI-RS RSRP所进行的加权处理，和 /或根据该 DMRS 的发送加权值所进行的加权处理。 With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the weighting processing includes performing a weighting process according to a CSI-RS RSRP, and/or according to a sending weighting value of the DMRS. Weighted processing.

结合第一方面或第一方面的第一种可能的实现方式，在第六种可能的实现方式中，从基站接收携带第二指示信息的动态信令，该第二指示信息用于指示该第一系数集合中的 m个第一系数，其中 m为正整数；根据该 m个第一系数，确定该第二系数。 With reference to the first aspect or the first possible implementation manner of the first aspect, in a sixth possible implementation, the dynamic signaling that carries the second indication information is received from the base station, where the second indication information is used to indicate the first m first coefficients in a set of coefficients, where m is a positive integer; and determining the second coefficient based on the m first coefficients.

结合第一方面的第六种可能的实现方式，在第七种可能的实现方式中，根据该 CSI-RS 参考信号接收功率 RSRP, 对该 m个第一系数进行加权，确定该第二系数；或者，根据该 DMRS的发送加权值，对该 m个第一系数进行加权，确定该第二系数；或者，对该 m个第一系数进行平均，确定该第二系数；或者，从该 m个第一系数中选取一个第一系数作为该第二系数。 With reference to the sixth possible implementation of the first aspect, in a seventh possible implementation, the power is received according to the CSI-RS reference signal, and the m first coefficients are weighted to determine the second coefficient; Or, according to the transmission weight value of the DMRS, weighting the m first coefficients to determine the second coefficient; or, averaging the m first coefficients to determine the second coefficient; or, from the m One of the first coefficients is selected as the second coefficient.

结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种可能的实现方式或第一方面的第三种可能的实现方式或第一方面的第四种可能的实现方式或第一方面的第五种可能的实现方式或第一方面的第六种可能的实现方式或第一方面的第七种可能的实现方式，在第八种可能的实现方式中，在进行信道估计之后，根据信道估计所得到的结果对数据进行解调。第二方面，提供了一种信道估计的方法，包括：生成动态信令，该动态信令用于用户设备 UE确定第二系数，其中该第二系数为信道估计系数；向该 UE发送该动态信令，以便该 UE根据第一系数集合和该动态信令确定该第二系数，并根据该第二系数和解调参考信号 DMRS 进行信道估计，该第一系数集合是该 UE根据多个信道状态信息参考信号 CSI-RS确定的，该第一系数集合包括多个第一系数，该第一系数表示下行信道统计特性。 Combining the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect The implementation manner or the fifth possible implementation manner of the first aspect or the sixth possible implementation manner of the first aspect or the seventh possible implementation manner of the first aspect, in the eighth possible implementation manner, After channel estimation, the data is demodulated based on the results obtained by the channel estimation. In a second aspect, a method for channel estimation is provided, including: generating dynamic signaling, where the dynamic signaling is used by a user equipment UE to determine a second coefficient, where the second coefficient is a channel estimation coefficient; and sending the dynamic to the UE Signaling, so that the UE determines the second coefficient according to the first coefficient set and the dynamic signaling, and performs channel estimation according to the second coefficient and the demodulation reference signal DMRS, where the first coefficient set is that the UE is according to multiple channels The state information reference signal CSI-RS determines that the first coefficient set includes a plurality of first coefficients, and the first coefficient represents a downlink channel statistical characteristic.

结合第二方面，在第一种可能的实现方式中，该动态信令携带第一指示信息，该第一指示信息用于指示第三系数集合中的能够用作该第二系数的第三系数，该第三系数集合包括至少一个第三系数，该第三系数为用于信道估计的候选系数，其中该第三系数集合是该 UE根据该第一系数集合确定的。 With reference to the second aspect, in a first possible implementation manner, the dynamic signaling carries first indication information, where the first indication information is used to indicate a third coefficient in the third coefficient set that can be used as the second coefficient And the third coefficient set includes at least one third coefficient, where the third coefficient is a candidate coefficient for channel estimation, where the third coefficient set is determined by the UE according to the first coefficient set.

结合第二方面，在第二种可能的实现方式中，该动态信令携带第二指示信息，该第二指示信息用于指示该第一系数集合中的 m个第一系数，以便该 UE根据该 m个第一系数确定该第二系数，其中 m为正整数。 With reference to the second aspect, in a second possible implementation, the dynamic signaling carries the second indication information, where the second indication information is used to indicate the m first coefficients in the first set of coefficients, so that the UE is configured according to The m first coefficients determine the second coefficient, where m is a positive integer.

第三方面，提供了一种用户设备，包括：第一确定单元，用于根据多个信道状态信息参考信号 CSI-RS, 确定第一系数集合，该第一系数集合包括多个第一系数，该第一系数表示下行信道统计特性；第二确定单元，用于根据该第一系数集合，确定第二系数，该第二系数为信道估计系数；信道估计单元，用于根据该第二系数和解调参考信号 DMRS, 进行信道估计。 In a third aspect, a user equipment is provided, including: a first determining unit, configured to determine, according to a plurality of channel state information reference signals CSI-RS, a first coefficient set, where the first coefficient set includes a plurality of first coefficients, The first coefficient indicates a downlink channel statistical characteristic; the second determining unit is configured to determine, according to the first coefficient set, a second coefficient, where the second coefficient is a channel estimation coefficient, and a channel estimation unit, configured to use the second coefficient and The reference signal DMRS is demodulated for channel estimation.

结合第三方面，在第一种可能的实现方式中，下行信道统计特性包括下行信道的时域相关矩阵、频域相关矩阵、时延功率谱或多普勒功率谱。 With reference to the third aspect, in the first possible implementation manner, the downlink channel statistics feature includes a time domain correlation matrix of the downlink channel, a frequency domain correlation matrix, a delay power spectrum, or a Doppler power spectrum.

结合第三方面或第三方面的第一种可能的实现方式，在第二种可能的实现方式中，该第二确定单元具体用于根据该第一系数集合，确定第三系数集合，该第三系数集合包括至少一个第三系数，该第三系数为用于信道估计的候选系数；根据该 DMRS, 确定第四系数，该第四系数为用于信道估计的粗略参考系数；从该第三系数集合中选取与该第四系数距离最小的第三系数作为该第二系数，或者从该第三系数集合中选取与该第四系数相关值最大的第三系数作为该第二系数。 With reference to the third aspect, or the first possible implementation manner of the third aspect, in a second possible implementation, the second determining unit is specifically configured to determine, according to the first coefficient set, a third coefficient set, where The three coefficient set includes at least one third coefficient, the third coefficient being a candidate coefficient for channel estimation; determining, according to the DMRS, a fourth coefficient, the fourth coefficient being a coarse reference coefficient for channel estimation; from the third A third coefficient having the smallest distance from the fourth coefficient is selected as the second coefficient, or a third coefficient having the largest correlation value with the fourth coefficient is selected as the second coefficient from the third coefficient set.

结合第三方面或第三方面的第一种可能的实现方式，在第三种可能的实现方式中，该第二确定单元具体用于根据该第一系数集合，确定第三系数集合，该第三系数集合包括至少一个第三系数，该第三系数为用于信道估计的候选系数；从基站接收携带第一指示信息的动态信令，该第一指示信息用于指示该第三系数集合中的能够用作该第二系数的第三系数；将该能够用作该第二系数的第三系数作为该第二系数。 With reference to the third aspect or the first possible implementation manner of the third aspect, in a third possible implementation, the second determining unit is specifically configured to determine, according to the first coefficient set, a third coefficient set, where The three coefficient set includes at least one third coefficient, the third coefficient is a candidate coefficient for channel estimation; receiving, from the base station, dynamic signaling carrying the first indication information, where the first indication information is used And indicating a third coefficient in the third coefficient set that can be used as the second coefficient; and using the third coefficient that can be used as the second coefficient as the second coefficient.

结合第三方面的第二种可能的实现方式或第三方面的第三种可能的实现方式，在第四种可能的实现方式中，该第二确定单元具体用于对该多个第一系数进行处理，确定该至少一个第三系数，其中，该对该多个第一系数进行处理采用以下处理方式中的至少一种：加权处理、平均处理和选择处理。 With the second possible implementation of the third aspect or the third possible implementation of the third aspect, in a fourth possible implementation, the second determining unit is specifically configured to use the multiple first coefficients Processing, determining the at least one third coefficient, wherein the processing the plurality of first coefficients adopts at least one of the following processing modes: weighting processing, averaging processing, and selection processing.

结合第三方面的第四种可能的实现方式，在第五种可能的实现方式中，该加权处理包括根据 CSI-RS RSRP所进行的加权处理，和 /或根据该 DMRS 的发送加权值所进行的加权处理。 With reference to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner, the weighting processing includes performing weighting processing according to the CSI-RS RSRP, and/or according to the sending weighting value of the DMRS. Weighted processing.

结合第三方面或第三方面的第一种可能的实现方式，在第六种可能的实现方式中，该第二确定单元具体用于从基站接收携带第二指示信息的动态信令，该第二指示信息用于指示该第一系数集合中的 m个第一系数，其中 m 为正整数；根据该 m个第一系数，确定该第二系数。 With reference to the third aspect, or the first possible implementation manner of the third aspect, in a sixth possible implementation, the second determining unit is specifically configured to receive dynamic signaling that carries the second indication information from the base station, where the The second indication information is used to indicate m first coefficients in the first coefficient set, where m is a positive integer; and the second coefficient is determined according to the m first coefficients.

结合第三方面的第六种可能的实现方式，在第七种可能的实现方式中，该第二确定单元具体用于根据该 CSI-RS 参考信号接收功率 RSRP, 对该 m 个第一系数进行加权，确定该第二系数；或者，根据该 DMRS 的发送加权值，对该 m个第一系数进行加权，确定该第二系数；或者，对该 m个第一系数进行平均，确定该第二系数；或者，从该 m个第一系数中选取一个第一系数作为该第二系数。 With reference to the sixth possible implementation manner of the third aspect, in a seventh possible implementation, the second determining unit is specifically configured to receive the power RSRP according to the CSI-RS reference signal, and perform the m first coefficients. Weighting, determining the second coefficient; or, according to the transmission weighting value of the DMRS, weighting the m first coefficients to determine the second coefficient; or, averaging the m first coefficients to determine the second a coefficient; or, selecting a first coefficient from the m first coefficients as the second coefficient.

结合第三方面或第三方面的第一种可能的实现方式或第三方面的第二种可能的实现方式或第三方面的第三种可能的实现方式或第三方面的第四种可能的实现方式或第三方面的第五种可能的实现方式或第三方面的第六种可能的实现方式或第三方面的第七种可能的实现方式，在第八种可能的实现方式中，该用户设备还包括解调单元，用于在进行信道估计之后，根据信道估计所得到的结果对数据进行解调。 Combining the third aspect or the first possible implementation of the third aspect or the second possible implementation of the third aspect or the third possible implementation of the third aspect or the fourth possible implementation of the third aspect The implementation of the fifth possible implementation of the third aspect, or the sixth possible implementation manner of the third aspect, or the seventh possible implementation manner of the third aspect, in the eighth possible implementation manner, The user equipment further includes a demodulation unit configured to demodulate the data based on the result obtained by the channel estimation after performing channel estimation.

第四方面，提供了一种基站，包括：生成单元，用于生成动态信令，该动态信令用于用户设备 UE确定第二系数,其中该第二系数为信道估计系数；发送单元，用于向该 UE发送该动态信令，以便该 UE根据第一系数集合和该动态信令确定该第二系数，并根据该第二系数和解调参考信号 DMRS 进行信道估计，该第一系数集合是该 UE 根据多个信道状态信息参考信号 CSI-RS 确定的，该第一系数集合包括多个第一系数，该第一系数表示下行信道统计特性。 The fourth aspect provides a base station, including: a generating unit, configured to generate dynamic signaling, where the dynamic signaling is used by the user equipment UE to determine a second coefficient, where the second coefficient is a channel estimation coefficient; Transmitting the dynamic signaling to the UE, so that the UE determines the second coefficient according to the first coefficient set and the dynamic signaling, and performing channel estimation according to the second coefficient and the demodulation reference signal DMRS, the first coefficient set The UE is determined according to a plurality of channel state information reference signals CSI-RS, the first coefficient set includes a plurality of first coefficients, and the first coefficient represents a downlink Channel statistics.

结合第四方面，在第一种可能的实现方式中，该动态信令携带第一指示信息，该第一指示信息用于指示第三系数集合中的能够用作该第二系数的第三系数，该第三系数集合包括至少一个第三系数，该第三系数为用于信道估计的候选系数，其中该第三系数集合是该 UE根据该第一系数集合确定的。 With reference to the fourth aspect, in a first possible implementation manner, the dynamic signaling carries first indication information, where the first indication information is used to indicate a third coefficient in the third coefficient set that can be used as the second coefficient And the third coefficient set includes at least one third coefficient, where the third coefficient is a candidate coefficient for channel estimation, where the third coefficient set is determined by the UE according to the first coefficient set.

结合第四方面，在第一种可能的实现方式中，该动态信令携带第二指示信息，该第二指示信息用于指示该第一系数集合中的 m个第一系数，以便该 UE根据该 m个第一系数确定该第二系数，其中 m为正整数。 With reference to the fourth aspect, in a first possible implementation, the dynamic signaling carries the second indication information, where the second indication information is used to indicate the m first coefficients in the first set of coefficients, so that the UE is configured according to The m first coefficients determine the second coefficient, where m is a positive integer.

第五方面，提供了一种用户设备，包括：处理器，用于根据多个信道状态信息参考信号 CSI-RS, 确定第一系数集合，该第一系数集合包括多个第一系数，该第一系数表示下行信道统计特性；根据该第一系数集合，确定第二系数，该第二系数为信道估计系数；根据该第二系数和解调参考信号 DMRS, 进行信道估计。 A fifth aspect provides a user equipment, including: a processor, configured to determine, according to a plurality of channel state information reference signals CSI-RS, a first coefficient set, where the first coefficient set includes a plurality of first coefficients, the first A coefficient represents a downlink channel statistical characteristic; and according to the first coefficient set, a second coefficient is determined, the second coefficient is a channel estimation coefficient; and channel estimation is performed according to the second coefficient and the demodulation reference signal DMRS.

结合第五方面，在第一种可能的实现方式中，下行信道统计特性包括下行信道的时域相关矩阵、频域相关矩阵、时延功率谱或多普勒功率谱。 With reference to the fifth aspect, in a first possible implementation manner, the downlink channel statistics feature includes a time domain correlation matrix of a downlink channel, a frequency domain correlation matrix, a delay power spectrum, or a Doppler power spectrum.

结合第五方面或第五方面的第一种可能的实现方式，在第二种可能的实现方式中，该处理器具体用于根据该第一系数集合，确定第三系数集合，该第三系数集合包括至少一个第三系数，该第三系数为用于信道估计的候选系数；根据该 DMRS, 确定第四系数，该第四系数为用于信道估计的粗略参考系数；从该第三系数集合中选取与该第四系数距离最小的第三系数作为该第二系数，或者从该第三系数集合中选取与该第四系数相关值最大的第三系数作为该第二系数。 With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a second possible implementation, the processor is specifically configured to determine, according to the first set of coefficients, a third coefficient set, the third coefficient The set includes at least one third coefficient, the third coefficient being a candidate coefficient for channel estimation; determining, according to the DMRS, a fourth coefficient, the fourth coefficient being a coarse reference coefficient for channel estimation; from the third coefficient set A third coefficient having the smallest distance from the fourth coefficient is selected as the second coefficient, or a third coefficient having the largest correlation value with the fourth coefficient is selected from the third coefficient set as the second coefficient.

结合第五方面或第五方面的第一种可能的实现方式，在第三种可能的实现方式中，该用户设备还包括接收器；该处理器具体用于根据该第一系数集合，确定第三系数集合，该第三系数集合包括至少一个第三系数，该第三系数为用于信道估计的候选系数；该接收器用于从基站接收携带第一指示信息的动态信令，该第一指示信息用于指示该第三系数集合中的能够用作该第二系数的第三系数；该处理器还用于将该能够用作该第二系数的第三系数作为该第二系数。 With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a third possible implementation, the user equipment further includes a receiver, where the processor is specifically configured to determine, according to the first coefficient set, a third coefficient set, the third coefficient set includes at least one third coefficient, the third coefficient is a candidate coefficient for channel estimation; the receiver is configured to receive, from the base station, dynamic signaling that carries the first indication information, the first indication The information is used to indicate a third coefficient in the third set of coefficients that can be used as the second coefficient; the processor is further configured to use the third coefficient that can be used as the second coefficient as the second coefficient.

结合第五方面的第二种可能的实现方式或第五方面的第三种可能的实现方式，在第四种可能的实现方式中，该处理器具体用于对该多个第一系数进行处理，确定该至少一个第三系数，其中，该对该多个第一系数进行处理采用以下处理方式中的至少一种：加权处理、平均处理和选择处理。 With reference to the second possible implementation of the fifth aspect or the third possible implementation of the fifth aspect, in a fourth possible implementation, the processor is specifically configured to use the multiple first coefficients Processing, determining the at least one third coefficient, wherein the processing the plurality of first coefficients adopts at least one of the following processing modes: weighting processing, averaging processing, and selection processing.

结合第五方面的第四种可能的实现方式，在第五种可能的实现方式中，该加权处理包括根据 CSI-RS RSRP所进行的加权处理，和 /或根据该 DMRS 的发送加权值所进行的加权处理。 With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner, the weighting processing includes performing weighting processing according to the CSI-RS RSRP, and/or according to the sending weighting value of the DMRS. Weighted processing.

结合第五方面或第五方面的第一种可能的实现方式，在第六种可能的实现方式中，该用户设备还包括接收器；该接收器用于从基站接收携带第二指示信息的动态信令，该第二指示信息用于指示该第一系数集合中的 m个第一系数，其中 m为正整数；该处理器具体用于根据该 m个第一系数，确定该第二系数。 With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a sixth possible implementation, the user equipment further includes a receiver, where the receiver is configured to receive a dynamic message that carries the second indication information from the base station. The second indication information is used to indicate the m first coefficients in the first set of coefficients, where m is a positive integer; the processor is specifically configured to determine the second coefficient according to the m first coefficients.

结合第五方面的第六种可能的实现方式，在第七种可能的实现方式中，该处理器具体用于根据该 CSI-RS 参考信号接收功率 RSRP, 对该 m个第一系数进行加权，确定该第二系数；或者，根据该 DMRS 的发送加权值，对该 m个第一系数进行加权，确定该第二系数；或者，对该 m个第一系数进行平均，确定该第二系数；或者，从该 m个第一系数中选取一个第一系数作为该第二系数。 With reference to the sixth possible implementation manner of the fifth aspect, in a seventh possible implementation, the processor is specifically configured to perform weighting the m first coefficients according to the CSI-RS reference signal received power RSRP, Determining the second coefficient; or, according to the transmission weighting value of the DMRS, weighting the m first coefficients to determine the second coefficient; or, averaging the m first coefficients to determine the second coefficient; Or, selecting a first coefficient from the m first coefficients as the second coefficient.

结合第三方面或第三方面的第一种可能的实现方式或第三方面的第二种可能的实现方式或第三方面的第三种可能的实现方式或第三方面的第四种可能的实现方式或第三方面的第五种可能的实现方式或第三方面的第六种可能的实现方式或第三方面的第七种可能的实现方式，在第八种可能的实现方式中，处理器还用于在所述进行信道估计之后，根据信道估计所得到的结果对数据进行解调。 Combining the third aspect or the first possible implementation of the third aspect or the second possible implementation of the third aspect or the third possible implementation of the third aspect or the fourth possible implementation of the third aspect The fifth possible implementation manner of the third aspect or the sixth possible implementation manner of the third aspect or the seventh possible implementation manner of the third aspect, in the eighth possible implementation manner, The device is further configured to demodulate the data according to the result obtained by the channel estimation after performing the channel estimation.

第六方面，提供了一种基站，包括：处理器，用于生成动态信令，该动态信令用于用户设备 UE确定第二系数，其中该第二系数为信道估计系数；发送器，用于向该 UE发送该动态信令，以便该 UE根据第一系数集合和该动态信令确定该第二系数，并根据该第二系数和解调参考信号 DMRS 进行信道估计，该第一系数集合是该 UE根据多个信道状态信息参考信号 CSI-RS 确定的，该第一系数集合包括多个第一系数，该第一系数表示下行信道统计特性。 The sixth aspect provides a base station, including: a processor, configured to generate dynamic signaling, where the dynamic signaling is used by the user equipment UE to determine a second coefficient, where the second coefficient is a channel estimation coefficient; Transmitting the dynamic signaling to the UE, so that the UE determines the second coefficient according to the first coefficient set and the dynamic signaling, and performs channel estimation according to the second coefficient and the demodulation reference signal DMRS, the first coefficient set The UE is determined according to a plurality of channel state information reference signals CSI-RS, the first coefficient set includes a plurality of first coefficients, and the first coefficients represent downlink channel statistical characteristics.

结合第六方面，在第一种可能的实现方式中，该动态信令携带第一指示信息，该第一指示信息用于指示第三系数集合中的能够用作该第二系数的第三系数，该第三系数集合包括至少一个第三系数，该第三系数为用于信道估计的候选系数，其中该第三系数集合是该 UE根据该第一系数集合确定的。 With reference to the sixth aspect, in a first possible implementation, the dynamic signaling carries first indication information, where the first indication information is used to indicate that the third coefficient set can be used as the second coefficient a third coefficient, the third coefficient set comprising at least one third coefficient, the third coefficient being a candidate coefficient for channel estimation, wherein the third coefficient set is determined by the UE according to the first coefficient set.

结合第六方面，在第二种可能的实现方式中，该动态信令携带第二指示信息，该第二指示信息用于指示该第一系数集合中的 m个第一系数，以便该 UE根据该 m个第一系数确定该第二系数，其中 m为正整数。 With reference to the sixth aspect, in a second possible implementation, the dynamic signaling carries the second indication information, where the second indication information is used to indicate the m first coefficients in the first set of coefficients, so that the UE is configured according to The m first coefficients determine the second coefficient, where m is a positive integer.

本发明实施例中，通过根据多个 CSI-RS确定第一系数集合，并根据第一系数集合确定用于信道估计的第二系数，从而能够实现存在多个 CSI-RS 情况下的信道估计。附图说明 In the embodiment of the present invention, by determining a first coefficient set according to a plurality of CSI-RSs and determining a second coefficient for channel estimation according to the first coefficient set, channel estimation in the case of multiple CSI-RSs can be implemented. DRAWINGS

为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作筒单地介绍，显而易见地，下面所描述的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。 In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

图 1是可应用本发明实施例的场景的一个例子的示意图。 1 is a schematic diagram of an example of a scenario in which an embodiment of the present invention is applicable.

图 2是根据本发明实施例的信道估计的方法的示意性流程图。 2 is a schematic flow chart of a method of channel estimation according to an embodiment of the present invention.

图 3是根据本发明实施例的信道估计的方法的示意性流程图。 FIG. 3 is a schematic flowchart of a method for channel estimation according to an embodiment of the present invention.

图 4是根据本发明实施例的用户设备的示意框图。 4 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

图 5是根据本发明实施例的基站的示意框图。 FIG. 5 is a schematic block diagram of a base station according to an embodiment of the present invention.

图 6是根据本发明实施例的用户设备的示意框图。 FIG. 6 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

图 7是根据本发明实施例的基站的示意框图。具体实施方式 7 is a schematic block diagram of a base station in accordance with an embodiment of the present invention. Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

本发明的技术方案，可以应用于各种通信***，例如：全球移动通信系统 ( Global System of Mobile communication, GSM ),码分多址 ( Code Division Multiple Access , CDMA ) ***，宽带码分多址（Wideband Code Division Multiple Access Wireless, WCDMA ), 通用分组无线业务 ( General Packet Radio Service, GPRS ), 长期演进（ Long Term Evolution, LTE )等。 The technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access ( Wideband Code Division Multiple Access Wireless (WCDMA), General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (LTE), etc.

用户设备（ User Equipment, UE ),也可称之为移动终端（ Mobile Terminal, MT )、移动用户设备等，可以经无线接入网（例如， Radio Access Network, RAN )与一个或多个核心网进行通信，用户设备可以是移动终端，如移动电话（或称为"蜂窝"电话）和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和 /或数据。 User Equipment (UE), which may also be called a Mobile Terminal (MT), a mobile user equipment, etc., may be connected to one or more core networks via a radio access network (eg, Radio Access Network, RAN). To communicate, the user device can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle. They exchange language and/or data with the wireless access network.

基站，可以是 GSM或 CDMA中的基站（ Base Transceiver Station, BTS ), 也可以是 WCDMA 中的基站（NodeB ), 还可以是 LTE 中的演进型基站 ( evolved Node B, eNB或 e-NodeB ), 本发明并不限定。 The base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved Node B (eNB or e-NodeB) in LTE. The invention is not limited.

图 1所示的场景可以为 CoMP***。如图 1所示，该场景可包括基站 110、 AP 120a, AP 120b和 UE 130。基站可以与 AP 120a和 AP 120b进行通信。 AP 120a和 AP 120b可以同时为 UE 130提供数据服务。 The scenario shown in Figure 1 can be a CoMP system. As shown in FIG. 1, the scenario may include a base station 110, an AP 120a, an AP 120b, and a UE 130. The base station can communicate with the AP 120a and the AP 120b. The AP 120a and the AP 120b can simultaneously provide data services to the UE 130.

应注意，图 1的例子只是为了帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。例如，图 1中虽然只描述了 2个 AP, 但本发明实施例中 AP的数目并不限于此，还可以有更多数目的 AP同时为 UE提供数据服务。 It should be noted that the example of FIG. 1 is only intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention. For example, although only two APs are described in FIG. 1, the number of APs in the embodiment of the present invention is not limited thereto, and a larger number of APs may simultaneously provide data services for the UE.

应理解，本发明实施例中， AP 可以是小区、小区对应的节点、远端射频头（ Remote Radio Head, RRH )、射频拉远单元（ Radio Remote Unit, RRU ) 或天线单元 ( Antenna Unit, AU )。 It should be understood that, in the embodiment of the present invention, the AP may be a cell, a node corresponding to the cell, a remote radio head (RRH), a radio remote unit (RRU), or an antenna unit (Antenna Unit, AU). ).

图 2是根据本发明实施例的信道估计的方法的示意性流程图。图 2的方法由 UE执行，例如可以由图 1中的 UE 130执行。 2 is a schematic flow chart of a method of channel estimation according to an embodiment of the present invention. The method of Figure 2 is performed by a UE, such as by UE 130 of Figure 1.

210, 根据多个 CSI-RS, 确定第一系数集合，第一系数集合包括多个第一系数，第一系数表示下行信道统计特性。 210. Determine, according to the multiple CSI-RSs, a first set of coefficients, where the first set of coefficients includes a plurality of first coefficients, and the first coefficient represents a downlink channel statistical characteristic.

每个 CSI-RS可以映射到一个或多个 AP上。例如，在图 1所示的场景中，每个 CSI-RS可以映射到 AP 120a或 AP120b, 也可以映射到 AP120a和 AP 120b。 Each CSI-RS can be mapped to one or more APs. For example, in the scenario shown in Figure 1, each CSI-RS can be mapped to AP 120a or AP 120b, or to AP 120a and AP 120b.

UE可以根据每个 CSI-RS确定相应的第一系数，或根据每个 CSI-RS的每个天线端口组确定相应的第一系数，确定方式可以参照现有技术，为了避免重复，此处不再赘述。其中天线端口组包含至少一个天线端口，每个 CSI-RS 包含至少一个天线端口组。第一系数可以表示下行信道统计特性。 The UE may determine a corresponding first coefficient according to each CSI-RS, or determine a corresponding first coefficient according to each antenna port group of each CSI-RS, and the determining manner may refer to the prior art, in order to avoid duplication, here is not Let me repeat. Where the antenna port group contains at least one antenna port, each CSI-RS Contains at least one antenna port group. The first coefficient may represent a downlink channel statistical characteristic.

220, 根据第一系数集合，确定第二系数，第二系数为信道估计系数。 220. Determine, according to the first coefficient set, a second coefficient, where the second coefficient is a channel estimation coefficient.

230, 根据第二系数和解调参考信号（Demodulation Reference Signal,230, according to the second coefficient and the demodulation reference signal (Demodulation Reference Signal,

DMRS ), 进行信道估计。 DMRS), channel estimation.

本发明实施例中，通过根据多个 CSI-RS确定第一系数集合，并根据第一系数集合确定用于信道估计的第二系数，从而能够实现存在多个 CSI-RS 情况下的信道估计。 In the embodiment of the present invention, by determining a first coefficient set according to a plurality of CSI-RSs and determining a second coefficient for channel estimation according to the first coefficient set, channel estimation in the case of multiple CSI-RSs can be implemented.

在本发明实施例中，信道估计可以采用多种算法。本发明实施例对此不作限定。例如，为了提高信道估计的精度， UE进行信道估计可以采用维纳插值算法，也可以称为最小均方误差（ Minimum Mean Square Error, MMSE ) 算法。为了通过维纳插值算法进行信道估计， UE需要获取下行信道的统计特性，并确定维纳插值系数。 In the embodiment of the present invention, channel estimation can adopt various algorithms. This embodiment of the present invention does not limit this. For example, in order to improve the accuracy of channel estimation, the UE may perform channel estimation by using a Wiener interpolation algorithm, which may also be called a Minimum Mean Square Error (MMSE) algorithm. In order to perform channel estimation by the Wiener interpolation algorithm, the UE needs to acquire the statistical characteristics of the downlink channel and determine the Wiener interpolation coefficient.

在步骤 210中， UE可以根据多个 CSI-RS确定多个第一系数，第一系数可以表示下行信道的统计特性。那么， UE可以根据第一系数集合，确定第二系数，第二系数可以是信道估计系数。 In step 210, the UE may determine a plurality of first coefficients according to the plurality of CSI-RSs, and the first coefficient may represent a statistical characteristic of the downlink channel. Then, the UE may determine the second coefficient according to the first coefficient set, and the second coefficient may be a channel estimation coefficient.

UE可以根据第二系数和 DMRS进行信道估计。 UE进行信道估计的过程可以如下： The UE may perform channel estimation based on the second coefficient and the DMRS. The process of the UE performing channel estimation can be as follows:

假设传输模型如等式（ 1 )表示： Assume that the transmission model is expressed by equation (1):

Y = XH + N Y = XH + N

其中， Y为 Mxl的接收向量（M为 DMRS的时频资源元素数目）， X是 MxM的对角阵，对角线上的元素是 DMRS X_k , k = l,2, - - -,M； H是 Mxl的参考信号信道向量， N是 Mxl的干扰噪声信号。 Where Y is the reception vector of Mxl (M is the number of time-frequency resource elements of DMRS), X is the diagonal matrix of MxM, and the elements on the diagonal are DMRS X _k , k = l, 2, - - -, M ; H is the reference signal channel vector of Mxl, and N is the interference noise signal of Mxl.

UE可以按照等式（ 2 )先对 DMRS位置的信道进行最小二乘（ Least Square, LS )估计： The UE may first perform Least Square (LS) estimation on the channel of the DMRS location according to equation (2):

Η = Χ ( 2 ) 其中，是 Mxl的 DMRS信道向量，是的估计值。 Η = Χ ( 2 ) where is the estimated value of the DMRS channel vector of Mxl.

然后 UE可以根据等式（3 )对 #进行维纳插值，

其中， R_H,_H是待插值位置与参考信号位置的时域和 /或频域相关距阵， R_H,_H 是第二系数； R_HH是 DMRS位置的时域和 /或频域自相关距阵， R_HH是由 R_H,_H 的部分元素组成的。 R_H,_H 数，是参考信号发

Then the UE can perform Wiener interpolation on # according to equation (3).

Where R _H , _H are the time domain and/or frequency domain correlation matrix of the position to be interpolated and the reference signal position, R _H , _H is the second coefficient; R _HH is the time domain and/or frequency domain autocorrelation of the DMRS position In the matrix, R _HH is composed of some elements of R _H , _H. R _H , _H number, is the reference signal

送功率， R,是干扰噪声矩阵。应注意，上述的举例只是为了帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。 The power delivered, R, is the interference noise matrix. It should be noted that the above-described examples are only intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention.

可选地，作为一个实施例，下行信道统计特性可以包括下行信道的时域相关矩阵、频域相关矩阵、时延功率谱或多普勒功率谱等。此外，下行信道统计特性还可以包括现有技术中的其它特性，本发明实施例对此不作限定。 Optionally, as an embodiment, the downlink channel statistics feature may include a time domain correlation matrix of the downlink channel, a frequency domain correlation matrix, a delay power spectrum, or a Doppler power spectrum. In addition, the downlink channel statistics feature may also include other features in the prior art, which are not limited in this embodiment of the present invention.

可选地，作为另一实施例，在步骤 220中， UE可以根据第一系数集合，确定第三系数集合，第三系数集合包括至少一个第三系数，第三系数可以是用于信道估计的候选系数。可根据 DMRS , 确定第四系数，第四系数可以是用于信道估计的粗略参考系数。可从第三系数集合中选取与第四系数距离最小的第三系数作为第二系数，或者从第三系数集合中选取与第四系数相关值最大的第三系数作为第二系数。由于第四系数可以反映 DMRS所映射的 AP 与 UE之间的实际下行信道的特性，因此从第三系数集合中选取与第四系数距离最小或相关值最大的第三系数作为第二系数，使得第二系数更为准确，从而能够提高信道估计的精确度。 Optionally, in another embodiment, in step 220, the UE may determine, according to the first set of coefficients, a third set of coefficients, where the third set of coefficients includes at least one third coefficient, where the third coefficient may be used for channel estimation. Candidate coefficient. The fourth coefficient may be determined according to the DMRS, and the fourth coefficient may be a coarse reference coefficient for channel estimation. A third coefficient having the smallest distance from the fourth coefficient may be selected from the third coefficient set as the second coefficient, or a third coefficient having the largest correlation value with the fourth coefficient may be selected from the third coefficient set as the second coefficient. Since the fourth coefficient can reflect the characteristics of the actual downlink channel between the AP and the UE mapped by the DMRS, the third coefficient with the smallest distance from the fourth coefficient or the largest correlation value is selected as the second coefficient from the third coefficient set, so that The second coefficient is more accurate, thereby improving the accuracy of the channel estimation.

可选地，作为另一实施例，在步骤 220中， UE可以根据第一系数集合，确定第三系数集合，第三系数集合包括至少一个第三系数，第三系数可以是用于信道估计的候选系数。可从基站接收携带第一指示信息的动态信令，第一指示信息可用于指示第三系数集合中的能够用作第二系数的第三系数。 UE可将能够用作第二系数的第三系数作为第二系数。由于基站能够获知每个 CSI-RS映射的 AP以及 DMRS映射的 AP ,因此能够更为准确地从第三系数集合中选择能够用作第二系数的第三系数，这样使得第二系数更为准确，从而能够提高信道估计的精确度。 Optionally, in another embodiment, in step 220, the UE may determine, according to the first set of coefficients, a third set of coefficients, where the third set of coefficients includes at least one third coefficient, where the third coefficient may be used for channel estimation. Candidate coefficient. Dynamic signaling carrying the first indication information may be received from the base station, and the first indication information may be used to indicate a third coefficient in the third set of coefficients that can be used as the second coefficient. The UE may use the third coefficient that can be used as the second coefficient as the second coefficient. Since the base station can learn the AP of each CSI-RS mapping and the AP of the DMRS mapping, it is possible to more accurately select the third coefficient that can be used as the second coefficient from the third coefficient set, so that the second coefficient is more accurate. , thereby improving the accuracy of channel estimation.

可选地，作为另一实施例，在步骤 220中， UE可以对多个第一系数进行处理，确定至少一个第三系数，其中，对多个第一系数进行处理可以采用以下处理方式中的至少一种：加权处理、平均处理和随机选择处理。可选地，作为另一实施例，在步骤 220中，加权处理可以包括根据 CSI-RS 参考信号接收功率（Reference Signal Receiving Power, RSRP )所进行的加权处理，和 /或根据 DMRS的发送加权值所进行的加权处理。 Optionally, in another embodiment, in step 220, the UE may process the multiple first coefficients to determine at least one third coefficient, where processing the multiple first coefficients may be performed in the following processing manners. At least one of: weighting processing, averaging processing, and random selection processing. Optionally, as another embodiment, in step 220, the weighting process may include a weighting process according to a CSI-RS Reference Signal Receiving Power (RSRP), and/or a transmission weight value according to the DMRS. The weighting process performed.

具体地， UE可以对多个第一系数进行加权处理，确定至少一个第三系数。例如， UE可以根据 CSI-RS RSRP, 对多个第一系数进行加权，确定至少一个第三系数。比如， UE可以对全部第一系数进行加权处理，确定一个第三系数。另外， UE也可以将第一系数划分为多个分组，对每个分组中的第一系数根据 CSI-RS RSRP进行加权处理，从而确定多个第三系数，得到第三系数集合。 Specifically, the UE may perform weighting processing on the plurality of first coefficients to determine at least one third coefficient. For example, the UE may weight the plurality of first coefficients according to the CSI-RS RSRP to determine at least one third coefficient. For example, the UE may perform weighting processing on all the first coefficients to determine a third coefficient. In addition, the UE may also divide the first coefficient into a plurality of packets, and perform weighting processing on the first coefficient in each packet according to the CSI-RS RSRP, thereby determining a plurality of third coefficients to obtain a third coefficient set.

再例如， UE还可以根据 DMRS的发送加权值，对多个第一系数进行加权处理，确定至少一个第三系数。 For example, the UE may further perform weighting processing on the plurality of first coefficients according to the transmission weight value of the DMRS to determine at least one third coefficient.

此外， UE可以对多个第一系数进行平均处理，确定至少一个第三系数。例如， UE可以对全部第一系数进行平均处理，确定一个第三系数。另外， UE也可以将第一系数划分多个分组，对每个分组中的第一系数进行平均处理，从而确定多个第三系数。 In addition, the UE may perform averaging processing on the plurality of first coefficients to determine at least one third coefficient. For example, the UE may average all the first coefficients to determine a third coefficient. In addition, the UE may also divide the first coefficient into a plurality of packets, and perform average processing on the first coefficients in each of the packets to determine a plurality of third coefficients.

另外， UE可以对多个第一系数进行选择处理，确定至少一个第三系数。例如， UE可以从多个第一系数中选择 n个第一系数作为第三系数，其中 n 为正整数。 In addition, the UE may perform selection processing on the plurality of first coefficients to determine at least one third coefficient. For example, the UE may select n first coefficients from the plurality of first coefficients as the third coefficient, where n is a positive integer.

应注意， UE还可以采用组合的处理方式对多个第一系数进行处理。例如， UE可以将多个第一系数划分为多个分组，每个分组可以采用加权处理、平均处理或选择处理的方式进行处理，确定一部分第三系数。比如， UE可以将多个系数划分为两个分组，对第一分组的第一系数进行加权处理，确定第一部分第三系数；可以对第二分组的第一系数进行选择处理，确定第二部分第三系数，从而得到第三系数集合。 It should be noted that the UE may also process the plurality of first coefficients in a combined processing manner. For example, the UE may divide the plurality of first coefficients into a plurality of packets, and each of the packets may be processed by a weighting process, an averaging process, or a selection process to determine a part of the third coefficients. For example, the UE may divide the multiple coefficients into two groups, perform weighting processing on the first coefficient of the first group, and determine the third coefficient of the first part; and may perform selection processing on the first coefficient of the second group to determine the second part. The third coefficient, thereby obtaining a third set of coefficients.

再比如， UE还可以根据 CSI-RS RSRP对第一分组的第一系数进行加权处理，确定第一部分第三系数；可以根据 DMRS 的发送加权值对第二分组的第一系数进行加权处理，确定第二部分第三系数，从而得到第三系数集合。 For example, the UE may further perform weighting processing on the first coefficient of the first packet according to the CSI-RS RSRP to determine the first partial third coefficient; and may perform weighting processing on the first coefficient of the second packet according to the transmission weight value of the DMRS to determine The second part is a third coefficient, thereby obtaining a third coefficient set.

应注意，上述根据第一系数集合确定第三系数集合的方式的举例只是为了帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。 It should be noted that the above-described manner of determining the third set of coefficients according to the first set of coefficients is only for the purpose of facilitating a better understanding of the embodiments of the present invention, and not limiting the scope of the embodiments of the present invention.

可选地，作为另一实施例，在步骤 220中， UE可以从基站接收携带第二指示信息的动态信令，第二指示信息可以用于指示第一系数集合中的 m个第一系数，其中 m为正整数。 UE可以根据 m个第一系数，确定第二系数。由于基站能够获知每个 CSI-RS映射的 AP以及 DMRS映射的 AP,因此能够更为准确地从第一系数集合中选择用于确定第二系数的第一系数，这样使得第二系数更为准确，从而能够提高信道估计的精确度。 Optionally, as another embodiment, in step 220, the UE may receive the first part from the base station. The second indication information is dynamic signaling, and the second indication information may be used to indicate m first coefficients in the first coefficient set, where m is a positive integer. The UE may determine the second coefficient according to the m first coefficients. Since the base station can learn the AP of each CSI-RS mapping and the AP of the DMRS mapping, it is possible to more accurately select the first coefficient for determining the second coefficient from the first coefficient set, so that the second coefficient is more accurate. , thereby improving the accuracy of channel estimation.

可选地，作为另一实施例， UE可以根据 CSI-RS RSRP, 对 m个第一系数进行加权，确定第二系数。 Optionally, as another embodiment, the UE may weight the m first coefficients according to the CSI-RS RSRP to determine the second coefficient.

例如，假设在步骤 210中 UE根据两个 CSI-RS分别确定了两个第一系数，分别以 ^^和？表示。 For example, assume that in step 210, the UE determines two first coefficients according to two CSI-RSs, respectively, ^^ and ? Said.

则可以按照等式（4)确定第二系数 R₂: Then the second coefficient R ₂ can be determined according to equation (4):

R₂ = (P^ + P₂R_l2)/(P_l +P₂) (4) 其中， Λ是 UE根据确定 R_1;1的 CSI-RS测量的 RSRP, Ρ₂是 UE根据确定 R_1;2的 CSI-RS测量的 RSRP。 R ₂ = (P^ + P ₂ R _l2 ) / (P _l + P ₂ ) (4) where Λ is the RSRP measured by the UE according to the CSI-RS determining R _{1; 1} , Ρ ₂ is determined by the UE according to R _{1 ; 2} CSI-RS measured RSRP.

可选地，作为另一实施例，在步骤 220中， UE可以根据 DMRS的发送加权值，对 m个第一系数进行加权，确定所述第二系数。 Optionally, in another embodiment, in step 220, the UE may weight the m first coefficients according to the transmission weighting value of the DMRS, and determine the second coefficient.

则可以按照等式（5 )确定第二系数 R₂: Then the second coefficient R ₂ can be determined according to equation (5):

R₂ =11^1^+1^1^ ( 5 ) 其中，是 R_u对应的 AP上的 DMRS的发送加权值， W₂是 R_1;2对应的 AP上的 DMRS的发送加权值。 R ₂ =11^1^+1^1^ ( 5 ) where is the transmission weight value of the DMRS on the AP corresponding to R _u , and W ₂ is the transmission weight value of the DMRS on the AP corresponding to R _{2 ;}

可选地，作为另一实施例，在步骤 220中， UE可以对 m个第一系数进行平均，确定第二系数。 Optionally, as another embodiment, in step 220, the UE may average the m first coefficients to determine the second coefficient.

例如，假设在步骤 210中 UE根据两个 CSI-RS分别确定了两个第一系数，分别以 R_1;1和 R_1;2表示。假设 m为 2。 For example, assume that in step 210 the UE determines two first coefficients according to two CSI-RSs, respectively denoted by R _{1; 1} and R _{1 ;} Suppose m is 2.

则可以按照等式（6)确定第二系数 R₂: Then the second coefficient R ₂ can be determined according to equation (6):

R₂ =(R_u +R₁₂)/2 (6) 可选地，作为另一实施例，在步骤 220中， UE可以从 m个第一系数中选取一个第一系数作为第二系数。 R ₂ =(R _u +R ₁₂ )/2 (6) Optionally, as another embodiment, in step 220, the UE may select one first coefficient from the m first coefficients as the second coefficient.

例如，假设在步骤 210中 UE根据两个 CSI-RS分别确定了两个第一系数，分别以 ^^和？表示。则第二系数 R₂= R_u , 当 Ρ Ρ₂时； For example, assume that in step 210 the UE determines two first coefficients according to two CSI-RSs, respectively, with ^^ and ? Said. Then the second coefficient R ₂ = R _u , when Ρ Ρ ₂ ;

或者，第二系数 Rf RW , 当 ^^^时。 Or, the second coefficient Rf RW , when ^^^.

其中， Λ是 UE根据确定 R_1;1的 CSI-RS测量的 RSRP , Ρ₂是 UE根据确定 R_1;2的 CSI-RS测量的 RSRP。 Where Λ is the RSRP measured by the UE according to the CSI-RS determining R _{1; 1} , and Ρ ₂ is the RSRP measured by the UE according to the CSI-RS determining R _1;

可选地，作为另一实施例，在步骤 230中进行信道估计之后， UE可以根据信道估计所得到的结果对数据进行解调。其中，进行解调的数据可以是物理下行共享信道 ( Physical downlink shared channel, PDSCH )或增强型物理下行控制信道 ( enhanced Physical Downlink Control Channel, ePDCCH )。本发明实施例中，通过根据多个 CSI-RS确定第一系数集合，并根据第一系数集合确定用于信道估计的第二系数，从而能够实现存在多个 CSI-RS情况下的信道估计。 Optionally, as another embodiment, after channel estimation is performed in step 230, the UE may demodulate the data according to the result obtained by the channel estimation. The data to be demodulated may be a Physical Downlink Shared Channel (PDSCH) or an Enhanced Physical Downlink Control Channel (ePDCCH). In the embodiment of the present invention, by determining a first coefficient set according to multiple CSI-RSs and determining a second coefficient for channel estimation according to the first coefficient set, channel estimation in the case of multiple CSI-RSs can be implemented.

图 3是根据本发明实施例的信道估计的方法的示意性流程图。图 3的方法由基站执行，例如可以由图 1中的基站 110执行。 FIG. 3 is a schematic flowchart of a method for channel estimation according to an embodiment of the present invention. The method of Figure 3 is performed by a base station, such as by base station 110 of Figure 1.

310, 生成动态信令，动态信令用于 UE确定第二系数，其中第二系数为信道估计系数。 310. Generate dynamic signaling, where the dynamic signaling is used by the UE to determine a second coefficient, where the second coefficient is a channel estimation coefficient.

320, 向 UE发送动态信令，以便 UE根据第一系数集合和动态信令确定第二系数，并根据第二系数和 DMRS进行信道估计，第一系数集合是 UE根据多个 CSI-RS确定的，第一系数集合包括多个第一系数，第一系数表示下行信道统计特性。 320. Send dynamic signaling to the UE, so that the UE determines the second coefficient according to the first coefficient set and the dynamic signaling, and performs channel estimation according to the second coefficient and the DMRS, where the first coefficient set is determined by the UE according to multiple CSI-RSs. The first set of coefficients includes a plurality of first coefficients, and the first coefficients represent downlink channel statistical characteristics.

基站向 UE发送动态信令， UE可以根据该动态信令确定第二系数，并可以根据第二系数和 DMRS进行信道。由于基站能够获知每个 CSI-RS映射的 AP以及 DMRS映射的 AP , 因此根据基站发送的动态信令确定第二系数更为准确，从而能够提高信道估计的精确度。 The base station sends dynamic signaling to the UE, and the UE may determine the second coefficient according to the dynamic signaling, and may perform the channel according to the second coefficient and the DMRS. Since the base station can learn the AP mapped by each CSI-RS and the AP mapped by the DMRS, it is more accurate to determine the second coefficient according to the dynamic signaling sent by the base station, thereby improving the accuracy of the channel estimation.

本发明实施例中，通过基站向 UE发送动态信令，使得 UE能够根据动态信令和第一系数集合确定用于信道估计的第二系数，并根据第二系数和 DMRS进行信道估计，由于第一系数集合是根据多个 CSI-RS确定的，从而能够实现存在多个 CSI-RS情况下的信道估计，并能够提高信道估计的精确度。 In the embodiment of the present invention, the base station sends dynamic signaling to the UE, so that the UE can determine the second coefficient used for channel estimation according to the dynamic signaling and the first coefficient set, and perform channel estimation according to the second coefficient and the DMRS. A coefficient set is determined according to a plurality of CSI-RSs, thereby enabling channel estimation in the case where there are multiple CSI-RSs, and improving the accuracy of channel estimation.

可选地，作为一个实施例，在步骤 310中，动态信令可携带第一指示信息，第一指示信息用于指示第三系数集合中的能够用作第二系数的第三系数，第三系数集合包括至少一个第三系数，第三系数为用于信道估计的候选系数，第三系数集合可以是 UE根据第一系数集合确定的。 Optionally, as an embodiment, in step 310, the dynamic signaling may carry the first indication information, where the first indication information is used to indicate a third coefficient in the third coefficient set that can be used as the second coefficient, and the third The set of coefficients includes at least one third coefficient, and the third coefficient is a candidate for channel estimation The coefficient, the third coefficient set may be determined by the UE according to the first coefficient set.

由于基站能够获知每个 CSI-RS映射的 AP以及 DMRS映射的 AP,因此能够更为准确地从第三系数集合中选择能够用作第二系数的第三系数，这样使得第二系数更为准确，从而能够提高 UE进行信道估计的精确度。 Since the base station can learn the AP of each CSI-RS mapping and the AP of the DMRS mapping, it is possible to more accurately select the third coefficient that can be used as the second coefficient from the third coefficient set, so that the second coefficient is more accurate. Thereby, the accuracy of the channel estimation by the UE can be improved.

可选地，作为另一实施例，在步骤 310中，动态信令可以携带第二指示信息，第二指示信息可以用于指示第一系数集合中的 m个第一系数，以便 Optionally, in another embodiment, in step 310, the dynamic signaling may carry the second indication information, where the second indication information may be used to indicate the m first coefficients in the first coefficient set, so that

UE根据 m个第一系数确定第二系数，其中第一系数集合包括多个第一系数，第一系数表示下行信道统计特性，其中 m为正整数。 The UE determines a second coefficient according to the m first coefficients, where the first coefficient set includes a plurality of first coefficients, and the first coefficient represents a downlink channel statistical characteristic, where m is a positive integer.

由于基站能够获知每个 CSI-RS映射的 AP以及 DMRS映射的 AP,因此能够更为准确地从第一系数集合中选择用于确定第二系数的第一系数，这样使得第二系数更为准确，从而能够提高 UE进行信道估计的精确度。 Since the base station can learn the AP of each CSI-RS mapping and the AP of the DMRS mapping, it is possible to more accurately select the first coefficient for determining the second coefficient from the first coefficient set, so that the second coefficient is more accurate. Thereby, the accuracy of the channel estimation by the UE can be improved.

本发明实施例中，通过基站向 UE发送动态信令，使得 UE能够根据动态信令和第一系数集合确定用于信道估计的第二系数，并根据第二系数和 In the embodiment of the present invention, the base station sends dynamic signaling to the UE, so that the UE can determine the second coefficient used for channel estimation according to the dynamic signaling and the first coefficient set, and according to the second coefficient and

DMRS进行信道估计，由于第一系数集合是根据多个 CSI-RS确定的，从而能够实现存在多个 CSI-RS情况下的信道估计，并能够提高信道估计的精确度。 The DMRS performs channel estimation. Since the first coefficient set is determined according to a plurality of CSI-RSs, channel estimation in the case where there are multiple CSI-RSs can be realized, and the accuracy of channel estimation can be improved.

图 4是根据本发明实施例的用户设备的示意框图。用户设备 400包括第一确定单元 410、第二确定单元 420和信道估计单元 430。 4 is a schematic block diagram of a user equipment according to an embodiment of the present invention. The user equipment 400 includes a first determining unit 410, a second determining unit 420, and a channel estimating unit 430.

第一确定单元 410根据多个 CSI-RS, 确定第一系数集合，第一系数集合包括多个第一系数，第一系数表示下行信道统计特性。第二确定单元 420 根据第一系数集合，确定第二系数，第二系数为信道估计系数。信道估计单元 430根据第二系数和 DMRS , 进行信道估计。 The first determining unit 410 determines a first coefficient set according to the plurality of CSI-RSs, the first coefficient set includes a plurality of first coefficients, and the first coefficient represents a downlink channel statistical characteristic. The second determining unit 420 determines the second coefficient according to the first coefficient set, and the second coefficient is a channel estimation coefficient. The channel estimation unit 430 performs channel estimation based on the second coefficient and the DMRS.

用户设备 400 的其它功能和操作可参照上面图 2 的方法实施例中涉及 UE的过程，为了避免重复，此处不再赘述。 For other functions and operations of the user equipment 400, reference may be made to the process involving the UE in the method embodiment of FIG. 2 above. To avoid repetition, details are not described herein again.

可选地，作为一个实施例，下行信道统计特性可以包括下行信道的时域相关矩阵、频域相关矩阵、时延功率谱或多普勒功率谱。 Optionally, as an embodiment, the downlink channel statistics feature may include a time domain correlation matrix of the downlink channel, a frequency domain correlation matrix, a delay power spectrum, or a Doppler power spectrum.

可选地，作为另一实施例，第二确定单元 420可根据第一系数集合，确定第三系数集合，第三系数集合包括至少一个第三系数，第三系数为用于信道估计的候选系数；根据 DMRS, 确定第四系数，第四系数为用于信道估计的粗略参考系数；从第三系数集合中选取与第四系数距离最小的第三系数作为所述第二系数，或者从第三系数集合中选取与第四系数相关值最大的第三系数作为第二系数。 Optionally, as another embodiment, the second determining unit 420 may determine, according to the first set of coefficients, a third set of coefficients, where the third set of coefficients includes at least one third coefficient, and the third coefficient is used for the a candidate coefficient of the channel estimation; determining, according to the DMRS, a fourth coefficient, the fourth coefficient being a coarse reference coefficient for channel estimation; and selecting, from the third coefficient set, a third coefficient having a smallest distance from the fourth coefficient as the second coefficient Or selecting a third coefficient having the largest correlation value with the fourth coefficient from the third coefficient set as the second coefficient.

可选地，作为另一实施例，第二确定单元 420可根据第一系数集合，确定第三系数集合，第三系数集合包括至少一个第三系数，第三系数为用于信道估计的候选系数；从基站接收携带第一指示信息的动态信令，第一指示信息用于指示第三系数集合中的能够用作所述第二系数的第三系数；将能够用作第二系数的第三系数作为第二系数。 Optionally, as another embodiment, the second determining unit 420 may determine, according to the first set of coefficients, a third set of coefficients, where the third set of coefficients includes at least one third coefficient, where the third coefficient is a candidate coefficient for channel estimation. Receiving, from the base station, dynamic signaling carrying the first indication information, the first indication information is used to indicate a third coefficient in the third coefficient set that can be used as the second coefficient; and the third coefficient that can be used as the second coefficient The coefficient is taken as the second coefficient.

可选地，作为另一实施例，第二确定单元 420可对多个第一系数进行处理，确定至少一个第三系数，其中，对多个第一系数进行处理可采用以下处理方式中的至少一种：加权处理、平均处理和选择处理。 Optionally, as another embodiment, the second determining unit 420 may process the plurality of first coefficients to determine the at least one third coefficient, where processing the plurality of first coefficients may adopt at least one of the following processing manners. One: weighting processing, averaging processing, and selection processing.

可选地，作为另一实施例，上述加权处理可包括根据 CSI-RS RSRP所进行的加权处理，和 /或根据 DMRS的发送加权值所进行的加权处理。 Optionally, as another embodiment, the weighting process may include weighting processing according to CSI-RS RSRP, and/or weighting processing according to a transmission weighting value of the DMRS.

可选地，作为另一实施例，第二确定单元 420可从基站接收携带第二指示信息的动态信令，第二指示信息用于指示第一系数集合中的 m个第一系数，其中 m为正整数；根据 m个第一系数，确定第二系数。 Optionally, as another embodiment, the second determining unit 420 may receive, from the base station, dynamic signaling that carries the second indication information, where the second indication information is used to indicate the m first coefficients in the first coefficient set, where m Is a positive integer; determining the second coefficient according to the m first coefficients.

可选地，作为另一实施例，第二确定单元 420可根据 CSI-RS RSRP, 对 m个第一系数进行加权，确定第二系数；或者，根据 DMRS的发送加权值，对 m个第一系数进行加权，确定第二系数；或者，对 m个第一系数进行平均，确定第二系数；或者，从 m个第一系数中选取一个第一系数作为第二系数。 Optionally, as another embodiment, the second determining unit 420 may weight the m first coefficients according to the CSI-RS RSRP, and determine the second coefficient; or, according to the sending weight value of the DMRS, the first of the m The coefficients are weighted to determine the second coefficient; or, the m first coefficients are averaged to determine the second coefficient; or a first coefficient is selected from the m first coefficients as the second coefficient.

可选地，作为另一实施例，用户设备 400还可包括解调单元 440。解调单元在信道估计进行信道估计之后，根据信道估计所得到的结果对数据进行解调。 Optionally, as another embodiment, the user equipment 400 may further include a demodulation unit 440. The demodulation unit demodulates the data based on the result of the channel estimation after channel estimation for channel estimation.

图 5是根据本发明实施例的基站的示意框图。基站 500包括生成单元 510 和发送单元 520。 FIG. 5 is a schematic block diagram of a base station according to an embodiment of the present invention. The base station 500 includes a generating unit 510 and a transmitting unit 520.

生成单元 510可生成动态信令，动态信令用于 UE确定第二系数，其中第二系数为信道估计系数。发送单元 520可向 UE发送动态信令，以便 UE 根据第一系数集合和动态信令确定第二系数，并根据第二系数和 DMRS 进行信道估计，第一系数集合是 UE根据多个 CSI-RS确定的，第一系数集合包括多个第一系数，第一系数表示下行信道统计特性。 The generating unit 510 can generate dynamic signaling, and the dynamic signaling is used by the UE to determine the second coefficient, where The second coefficient is a channel estimation coefficient. The sending unit 520 may send dynamic signaling to the UE, so that the UE determines the second coefficient according to the first coefficient set and the dynamic signaling, and performs channel estimation according to the second coefficient and the DMRS, where the first coefficient set is the UE according to multiple CSI-RSs. Determining, the first coefficient set includes a plurality of first coefficients, and the first coefficient represents a downlink channel statistical characteristic.

基站 500的其它功能和操作可参照上面图 3的方法实施例中涉及基站的过程，为了避免重复，此处不再赘述。 For other functions and operations of the base station 500, reference may be made to the process involving the base station in the method embodiment of FIG. 3 above. To avoid repetition, details are not described herein again.

可选地，作为一个实施例，动态信令可携带第一指示信息，第一指示信息可用于指示第三系数集合中的能够用作第二系数的第三系数，第三系数集合包括至少一个第三系数，第三系数为用于信道估计的候选系数，其中第三系数集合是 UE根据第一系数集合确定的。 Optionally, as an embodiment, the dynamic signaling may carry the first indication information, where the first indication information may be used to indicate a third coefficient in the third coefficient set that can be used as the second coefficient, where the third coefficient set includes at least one The third coefficient, the third coefficient is a candidate coefficient for channel estimation, wherein the third coefficient set is determined by the UE according to the first coefficient set.

可选地，作为另一实施例，动态信令携带第二指示信息，第二指示信息用于指示第一系数集合中的 m个第一系数，以便 UE根据 m个第一系数确定第二系数，其中 m为正整数。 Optionally, as another embodiment, the dynamic signaling carries the second indication information, where the second indication information is used to indicate the m first coefficients in the first coefficient set, so that the UE determines the second coefficient according to the m first coefficients. , where m is a positive integer.

图 6是根据本发明实施例的用户设备的示意框图。用户设备 600包括处理器 610。 FIG. 6 is a schematic block diagram of a user equipment according to an embodiment of the present invention. User device 600 includes a processor 610.

处理器 610根据多个 CSI-RS, 确定第一系数集合，第一系数集合包括多个第一系数，第一系数表示下行信道统计特性；根据第一系数集合，确定第二系数，第二系数为信道估计系数；根据第二系数和 DMRS, 进行信道估计。 The processor 610 determines a first coefficient set according to the multiple CSI-RSs, where the first coefficient set includes a plurality of first coefficients, the first coefficient represents a downlink channel statistical characteristic, and the second coefficient, the second coefficient is determined according to the first coefficient set. Estimating coefficients for the channel; performing channel estimation based on the second coefficient and the DMRS.

本发明实施例中，通过根据多个 CSI-RS确定第一系数集合，并根据第一系数集合确定用于信道估计的第二系数，从而能够实现存在多个 CSI-RS 情况下的信道估计。 In the embodiment of the present invention, by determining a first coefficient set according to multiple CSI-RSs, and determining a second coefficient for channel estimation according to the first coefficient set, it is possible to implement multiple CSI-RSs. Channel estimation in case.

用户设备 600 的其它功能和操作可参照上面图 2 的方法实施例中涉及 UE的过程，为了避免重复，此处不再赘述。 For other functions and operations of the user equipment 600, reference may be made to the process involving the UE in the method embodiment of FIG. 2 above. To avoid repetition, details are not described herein again.

可选地，作为另一实施例，处理器 610可根据第一系数集合，确定第三系数集合，第三系数集合包括至少一个第三系数，第三系数为用于信道估计的候选系数；根据 DMRS, 确定第四系数，第四系数为用于信道估计的粗略参考系数；从第三系数集合中选取与第四系数距离最小的第三系数作为第二系数，或者从第三系数集合中选取与第四系数相关值最大的第三系数作为第二系数。 Optionally, as another embodiment, the processor 610 may determine, according to the first set of coefficients, a third set of coefficients, where the third set of coefficients includes at least one third coefficient, where the third coefficient is a candidate coefficient for channel estimation; DMRS, determining a fourth coefficient, the fourth coefficient is a coarse reference coefficient used for channel estimation; selecting a third coefficient having the smallest distance from the fourth coefficient as the second coefficient from the third coefficient set, or selecting from the third coefficient set The third coefficient having the largest correlation value with the fourth coefficient is used as the second coefficient.

可选地，作为另一实施例，用户设备 600还可包括接收器 620。处理器 610可根据第一系数集合，确定第三系数集合，第三系数集合包括至少一个第三系数，第三系数可以为用于信道估计的候选系数。接收器 620可从基站接收携带第一指示信息的动态信令，第一指示信息用于指示第三系数集合中的能够用作第二系数的第三系数。处理器 610还可用于将能够用作第二系数的第三系数作为第二系数。 Optionally, as another embodiment, the user equipment 600 may further include a receiver 620. The processor 610 can determine a third set of coefficients according to the first set of coefficients, the third set of coefficients includes at least one third coefficient, and the third coefficient can be a candidate coefficient for channel estimation. The receiver 620 can receive dynamic signaling carrying the first indication information from the base station, where the first indication information is used to indicate a third coefficient in the third coefficient set that can be used as the second coefficient. The processor 610 can also be configured to use a third coefficient that can be used as the second coefficient as the second coefficient.

可选地，作为另一实施例，处理器 610可对多个第一系数进行处理，确定至少一个第三系数，其中，对多个第一系数进行处理可采用以下处理方式中的至少一种：加权处理、平均处理和选择处理。 Optionally, as another embodiment, the processor 610 may process the plurality of first coefficients to determine the at least one third coefficient, where processing the plurality of first coefficients may adopt at least one of the following processing manners. : Weighting, averaging, and selection processing.

可选地，作为另一实施例，加权处理可包括根据 CSI-RS RSRP所进行的加权处理，和 /或根据 DMRS的发送加权值所进行的加权处理。 Alternatively, as another embodiment, the weighting process may include weighting processing according to CSI-RS RSRP, and/or weighting processing according to transmission weighting values of the DMRS.

可选地，作为另一实施例，接收器 620可从基站接收携带第二指示信息的动态信令，第二指示信息用于指示所述第一系数集合中的 m个第一系数，其中 m为正整数。处理器 610可根据 m个第一系数，确定第二系数。 Optionally, as another embodiment, the receiver 620 may receive, from the base station, dynamic signaling that carries the second indication information, where the second indication information is used to indicate the m first coefficients in the first coefficient set, where m Is a positive integer. The processor 610 can determine the second coefficient based on the m first coefficients.

可选地，作为另一实施例，处理器 610可根据 CSI-RS RSRP, 对 m个第一系数进行加权，确定第二系数；或者，根据 DMRS的发送加权值，对 m 个第一系数进行加权，确定第二系数；或者，对 m个第一系数进行平均，确定第二系数；或者，从 m个第一系数中选取一个第一系数作为第二系数。 Optionally, as another embodiment, the processor 610 may perform weighting on the m first coefficients according to the CSI-RS RSRP to determine the second coefficient; or, according to the transmission weight value of the DMRS, perform m first coefficients. Weighting, determining the second coefficient; or, averaging the m first coefficients to determine the second coefficient; or selecting a first coefficient from the m first coefficients as the second coefficient.

可选地，作为另一实施例，处理器 610还可在进行信道估计之后，根据信道估计所得到的结果对数据进行解调。本发明实施例中，通过根据多个 CSI-RS确定第一系数集合，并根据第一系数集合确定用于信道估计的第二系数，从而能够实现存在多个 CSI-RS 情况下的信道估计。 Optionally, as another embodiment, the processor 610 may further demodulate the data according to the result obtained by the channel estimation after performing channel estimation. In the embodiment of the present invention, by determining a first coefficient set according to multiple CSI-RSs and determining a second coefficient for channel estimation according to the first coefficient set, channel estimation in the case of multiple CSI-RSs can be implemented.

图 7是根据本发明实施例的基站的示意框图。基站 700包括处理器 710 和发送器 720。 7 is a schematic block diagram of a base station in accordance with an embodiment of the present invention. Base station 700 includes a processor 710 and a transmitter 720.

处理器 710生成动态信令，动态信令用于 UE确定第二系数，其中第二系数为信道估计系数。发送器 720向 UE发送动态信令，以便 UE根据第一系数集合和动态信令确定第二系数，并根据第二系数和 DMRS 进行信道估计，第一系数集合是 UE根据多个 CSI-RS确定的，第一系数集合包括多个第一系数，第一系数表示下行信道统计特性。 The processor 710 generates dynamic signaling, and the dynamic signaling is used by the UE to determine a second coefficient, where the second coefficient is a channel estimation coefficient. The transmitter 720 sends dynamic signaling to the UE, so that the UE determines the second coefficient according to the first coefficient set and the dynamic signaling, and performs channel estimation according to the second coefficient and the DMRS, where the first coefficient set is determined by the UE according to multiple CSI-RSs. The first coefficient set includes a plurality of first coefficients, and the first coefficient represents a downlink channel statistical characteristic.

基站 700的其它功能和操作可参照上面图 3的方法实施例中涉及基站的过程，为了避免重复，此处不再赘述。 For other functions and operations of the base station 700, refer to the process related to the base station in the method embodiment of FIG. 3 above. To avoid repetition, details are not described herein again.

可选地，作为另一实施例，动态信令可携带第二指示信息，第二指示信息可用于指示第一系数集合中的 _m个第一系数，以便 _UE根据 _m个第一系数确定第二系数，其中 m为正整数。 Optionally, as another embodiment, the dynamic signaling may carry the second indication information, where the second indication information may be used to indicate the _m first coefficients in the first coefficient set, so that the _UE determines the second according to the _m first coefficients. Coefficient, where m is a positive integer.

本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。 Those skilled in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in computer software and electronic hardware. Come together to achieve. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

所属领域的技术人员可以清楚地了解到，为描述的方便和筒洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。 It will be apparent to those skilled in the art that, for the convenience of the description and the cleaning process, the specific operation of the system, the device and the unit described above may be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

在本申请所提供的几个实施例中，应该理解到，所揭露的***、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个 ***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。 In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。 The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。 In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。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或者该技术方案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计算机设备（可以是个人计算机，服务器，或者网络设备等）执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括： U盘、移动硬盘、只读存储器（ ROM, Read-Only Memory )、随机存取存储器（RAM, Random Access Memory ), 磁碟或者光盘等各种可以存储程序代码的介质。 The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。 The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can easily within the technical scope disclosed by the present invention. Any changes or substitutions are contemplated as being within the scope of the invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

权利要求 Rights request

1. 一种信道估计的方法，其特征在于，包括： A method for channel estimation, comprising:

根据多个信道状态信息参考信号 CSI-RS, 确定第一系数集合，所述第一系数集合包括多个第一系数，所述第一系数表示下行信道统计特性； Determining, according to the plurality of channel state information reference signals CSI-RS, a first coefficient set, where the first coefficient set includes a plurality of first coefficients, and the first coefficient represents a downlink channel statistical characteristic;

根据所述第一系数集合，确定第二系数，所述第二系数为信道估计系数; 根据所述第二系数和解调参考信号 DMRS, 进行信道估计。 Determining, according to the first set of coefficients, a second coefficient, the second coefficient being a channel estimation coefficient; performing channel estimation according to the second coefficient and the demodulation reference signal DMRS.

2. 根据权利要求 1所述的方法，其特征在于，所述下行信道统计特性包括下行信道的时域相关矩阵、频域相关矩阵、时延功率谱或多普勒功率谱。 2. The method according to claim 1, wherein the downlink channel statistical characteristics comprise a time domain correlation matrix of a downlink channel, a frequency domain correlation matrix, a delay power spectrum or a Doppler power spectrum.

3. 根据权利要求 1或 2所述的方法，其特征在于，所述根据所述第一系数集合，确定第二系数，包括： The method according to claim 1 or 2, wherein the determining the second coefficient according to the first set of coefficients comprises:

根据所述第一系数集合，确定第三系数集合，所述第三系数集合包括至少一个第三系数，所述第三系数为用于信道估计的候选系数； Determining, according to the first set of coefficients, a third set of coefficients, the third set of coefficients including at least one third coefficient, the third coefficient being a candidate coefficient for channel estimation;

根据所述 DMRS, 确定第四系数，所述第四系数为用于信道估计的粗略参考系数； Determining, according to the DMRS, a fourth coefficient, where the fourth coefficient is a coarse reference coefficient for channel estimation;

从所述第三系数集合中选取与所述第四系数距离最小的第三系数作为所述第二系数，或者从所述第三系数集合中选取与所述第四系数相关值最大的第三系数作为所述第二系数。 Selecting a third coefficient having the smallest distance from the fourth coefficient as the second coefficient from the third coefficient set, or selecting a third largest correlation value with the fourth coefficient from the third coefficient set The coefficient is taken as the second coefficient.

4. 根据权利要求 1或 2所述的方法，其特征在于，所述根据所述第一系数集合，确定第二系数，包括： The method according to claim 1 or 2, wherein the determining the second coefficient according to the first set of coefficients comprises:

从基站接收携带第一指示信息的动态信令，所述第一指示信息用于指示所述第三系数集合中的能够用作所述第二系数的第三系数； Receiving dynamic signaling that carries the first indication information, where the first indication information is used to indicate a third coefficient in the third coefficient set that can be used as the second coefficient;

将所述能够用作所述第二系数的第三系数作为所述第二系数。 The third coefficient that can be used as the second coefficient is used as the second coefficient.

5. 根据权利要求 3或 4所述的方法，其特征在于，所述根据所述第一系数集合，确定第三系数集合，包括： The method according to claim 3 or 4, wherein the determining the third coefficient set according to the first coefficient set comprises:

对所述多个第一系数进行处理，确定所述至少一个第三系数，其中，所述对所述多个第一系数进行处理采用以下处理方式中的至少一种：加权处理、平均处理和选择处理。 Processing the plurality of first coefficients to determine the at least one third coefficient, wherein the processing the plurality of first coefficients adopts at least one of the following processing manners: weighting processing, averaging processing, and Choose to process.

6. 根据权利要求 5所述的方法，其特征在于，所述加权处理包括根据 6. The method according to claim 5, wherein the weighting process comprises

CSI-RS RSRP所进行的加权处理，和 /或根据所述 DMRS的发送加权值所进行的加权处理。 Weighting processing by the CSI-RS RSRP, and/or according to the transmission weighting value of the DMRS Weighting of rows.

7. 根据权利要求 1或 2所述的方法，其特征在于，所述根据所述第一系数集合，确定第二系数，包括： The method according to claim 1 or 2, wherein the determining the second coefficient according to the first set of coefficients comprises:

从基站接收携带第二指示信息的动态信令，所述第二指示信息用于指示所述第一系数集合中的 m个第一系数，其中 m为正整数； And receiving, by the base station, the dynamic signaling that carries the second indication information, where the second indication information is used to indicate the m first coefficients in the first coefficient set, where m is a positive integer;

根据所述 m个第一系数，确定所述第二系数。 Determining the second coefficient according to the m first coefficients.

8. 根据权利要求 7所述的方法，其特征在于，所述根据所述 m个第一系数，确定所述第二系数，包括： The method according to claim 7, wherein the determining the second coefficient according to the m first coefficients comprises:

根据所述 CSI-RS 参考信号接收功率 RSRP, 对所述 m个第一系数进行加权，确定所述第二系数；或者， Determining, by the CSI-RS reference signal receiving power RSRP, the m first coefficients to determine the second coefficient; or

根据所述 DMRS的发送加权值，对所述 m个第一系数进行加权，确定所述第二系数；或者， And weighting the m first coefficients according to the sending weight value of the DMRS, determining the second coefficient; or

对所述 m个第一系数进行平均，确定所述第二系数；或者， And averaging the m first coefficients to determine the second coefficient; or

从所述 m个第一系数中选取一个第一系数作为所述第二系数。 Selecting a first coefficient from the m first coefficients as the second coefficient.

9. 根据权利要求 1至 8中任一项所述的方法，其特征在于，还包括：在所述进行信道估计之后，根据信道估计所得到的结果对数据进行解调。 The method according to any one of claims 1 to 8, further comprising: after the channel estimation is performed, demodulating the data according to a result obtained by the channel estimation.

10. 一种信道估计的方法，其特征在于，包括： A method for channel estimation, comprising:

生成动态信令，所述动态信令用于用户设备 UE确定第二系数，其中所述第二系数为信道估计系数； Generating dynamic signaling, where the dynamic signaling is used by the user equipment UE to determine a second coefficient, where the second coefficient is a channel estimation coefficient;

向所述 UE发送所述动态信令，以便所述 UE根据第一系数集合和所述动态信令确定所述第二系数，并根据所述第二系数和解调参考信号 DMRS 进行信道估计，所述第一系数集合是所述 UE根据多个信道状态信息参考信号 CSI-RS确定的，所述第一系数集合包括多个第一系数，所述第一系数表示下行信道统计特性。 Transmitting the dynamic signaling to the UE, so that the UE determines the second coefficient according to the first coefficient set and the dynamic signaling, and performs channel estimation according to the second coefficient and the demodulation reference signal DMRS, The first set of coefficients is determined by the UE according to a plurality of channel state information reference signals CSI-RS, the first set of coefficients includes a plurality of first coefficients, and the first coefficients represent downlink channel statistical characteristics.

11. 根据权利要求 10所述的方法，其特征在于，所述动态信令携带第一指示信息，所述第一指示信息用于指示第三系数集合中的能够用作所述第二系数的第三系数，所述第三系数集合包括至少一个第三系数，所述第三系数为用于信道估计的候选系数，其中所述第三系数集合是所述 UE根据所述第一系数集合确定的。 The method according to claim 10, wherein the dynamic signaling carries first indication information, where the first indication information is used to indicate that the third coefficient set can be used as the second coefficient a third coefficient, the third coefficient set includes at least one third coefficient, the third coefficient is a candidate coefficient for channel estimation, where the third coefficient set is determined by the UE according to the first coefficient set of.

12. 根据权利要求 10所述的方法，其特征在于，所述动态信令携带第二指示信息，所述第二指示信息用于指示所述第一系数集合中的 m个第一系数，以便所述 UE根据所述 m个第一系数确定所述第二系数，其中 m为正整数。 12. The method according to claim 10, wherein the dynamic signaling carries a Two indication information, where the second indication information is used to indicate m first coefficients in the first coefficient set, so that the UE determines the second coefficient according to the m first coefficients, where m is positive Integer.

13. 一种用户设备，其特征在于，包括： 13. A user equipment, comprising:

第一确定单元，用于根据多个信道状态信息参考信号 CSI-RS , 确定第一系数集合，所述第一系数集合包括多个第一系数，所述第一系数表示下行信道统计特性； a first determining unit, configured to determine a first coefficient set according to the multiple channel state information reference signals CSI-RS, where the first coefficient set includes a plurality of first coefficients, where the first coefficient represents a downlink channel statistical characteristic;

第二确定单元，用于根据所述第一系数集合，确定第二系数，所述第二系数为信道估计系数； a second determining unit, configured to determine, according to the first set of coefficients, a second coefficient, where the second coefficient is a channel estimation coefficient;

信道估计单元，用于根据所述第二系数和解调参考信号 DMRS , 进行信道估计。 And a channel estimation unit, configured to perform channel estimation according to the second coefficient and the demodulation reference signal DMRS.

14. 根据权利要求 13所述的用户设备，其特征在于，所述下行信道统计特性包括下行信道的时域相关矩阵、频域相关矩阵、时延功率谱或多普勒功率谱。 The user equipment according to claim 13, wherein the downlink channel statistics include a time domain correlation matrix of a downlink channel, a frequency domain correlation matrix, a delay power spectrum, or a Doppler power spectrum.

15. 根据权利要求 13或 14所述的用户设备，其特征在于，所述第二确定单元具体用于根据所述第一系数集合，确定第三系数集合，所述第三系数集合包括至少一个第三系数，所述第三系数为用于信道估计的候选系数；根据所述 DMRS , 确定第四系数，所述第四系数为用于信道估计的粗略参考系数；从所述第三系数集合中选取与所述第四系数距离最小的第三系数作为所述第二系数，或者从所述第三系数集合中选取与所述第四系数相关值最大的第三系数作为所述第二系数。 The user equipment according to claim 13 or 14, wherein the second determining unit is specifically configured to determine a third coefficient set according to the first coefficient set, where the third coefficient set includes at least one a third coefficient, the third coefficient being a candidate coefficient for channel estimation; determining, according to the DMRS, a fourth coefficient, the fourth coefficient being a coarse reference coefficient for channel estimation; and the third coefficient set Selecting, as the second coefficient, a third coefficient having the smallest distance from the fourth coefficient, or selecting a third coefficient having the largest correlation value with the fourth coefficient from the third coefficient set as the second coefficient .

16. 根据权利要求 13或 14所述的用户设备，其特征在于，所述第二确定单元具体用于根据所述第一系数集合，确定第三系数集合，所述第三系数集合包括至少一个第三系数，所述第三系数为用于信道估计的候选系数；从基站接收携带第一指示信息的动态信令，所述第一指示信息用于指示所述第三系数集合中的能够用作所述第二系数的第三系数；将所述能够用作所述第二系数的第三系数作为所述第二系数。 The user equipment according to claim 13 or 14, wherein the second determining unit is specifically configured to determine a third coefficient set according to the first coefficient set, where the third coefficient set includes at least one a third coefficient, the third coefficient is a candidate coefficient for channel estimation; receiving, from the base station, dynamic signaling that carries the first indication information, where the first indication information is used to indicate that the third coefficient set is usable Making a third coefficient of the second coefficient; using the third coefficient that can be used as the second coefficient as the second coefficient.

17. 根据权利要求 15或 16所述的用户设备，其特征在于，所述第二确定单元具体用于对所述多个第一系数进行处理，确定所述至少一个第三系数，其中，所述对所述多个第一系数进行处理采用以下处理方式中的至少一种：加权处理、平均处理和选择处理。 The user equipment according to claim 15 or 16, wherein the second determining unit is configured to process the plurality of first coefficients to determine the at least one third coefficient, where The processing of the plurality of first coefficients is performed by at least one of the following processing methods: weighting processing, averaging processing, and selection processing.

18. 根据权利要求 17所述的用户设备，其特征在于，所述加权处理包括根据 CSI-RS RSRP所进行的加权处理，和 /或 ^据所述 DMRS的发送加权值所进行的加权处理。 The user equipment according to claim 17, wherein the weighting processing includes weighting processing according to CSI-RS RSRP, and/or weighting processing according to a transmission weight value of the DMRS.

19. 根据权利要求 13或 14所述的用户设备，其特征在于，所述第二确定单元具体用于从基站接收携带第二指示信息的动态信令，所述第二指示信息用于指示所述第一系数集合中的 m个第一系数，其中 m为正整数；根据所述 m个第一系数，确定所述第二系数。 The user equipment according to claim 13 or 14, wherein the second determining unit is configured to receive dynamic signaling that carries the second indication information from the base station, where the second indication information is used to indicate the location m first coefficients in the first set of coefficients, where m is a positive integer; determining the second coefficients according to the m first coefficients.

20. 根据权利要求 19所述的用户设备，其特征在于，所述第二确定单元具体用于根据所述 CSI-RS 参考信号接收功率 RSRP, 对所述 m个第一系数进行加权，确定所述第二系数；或者，根据所述 DMRS 的发送加权值，对所述 m个第一系数进行加权，确定所述第二系数；或者，对所述 m个第一系数进行平均，确定所述第二系数；或者，从所述 m个第一系数中选取一个第一系数作为所述第二系数。 The user equipment according to claim 19, wherein the second determining unit is specifically configured to: according to the CSI-RS reference signal receiving power RSRP, weight the m first coefficients, determine Or the second coefficient; or, according to the transmission weight value of the DMRS, weighting the m first coefficients to determine the second coefficient; or, averaging the m first coefficients, determining the a second coefficient; or, selecting a first coefficient from the m first coefficients as the second coefficient.

21. 根据权利要求 13至 20中任一项所述的用户设备，其特征在于，还包括： The user equipment according to any one of claims 13 to 20, further comprising:

解调单元，用于在所述信道估计单元进行信道估计之后，根据信道估计所得到的结果对数据进行解调。 And a demodulation unit, configured to demodulate the data according to the result obtained by the channel estimation after the channel estimation unit performs channel estimation.

22. 一种基站，其特征在于，包括： 22. A base station, comprising:

生成单元，用于生成动态信令，所述动态信令用于用户设备 UE确定第二系数，其中所述第二系数为信道估计系数； a generating unit, configured to generate dynamic signaling, where the dynamic signaling is used by the user equipment UE to determine a second coefficient, where the second coefficient is a channel estimation coefficient;

发送单元，用于向所述 UE发送所述动态信令，以便所述 UE根据第一系数集合和所述动态信令确定所述第二系数，并根据所述第二系数和解调参考信号 DMRS进行信道估计，所述第一系数集合是所述 UE根据多个信道状态信息参考信号 CSI-RS确定的，所述第一系数集合包括多个第一系数，所述第一系数表示下行信道统计特性。 a sending unit, configured to send the dynamic signaling to the UE, so that the UE determines the second coefficient according to the first coefficient set and the dynamic signaling, and according to the second coefficient and a demodulation reference signal The DMRS performs channel estimation, where the first coefficient set is determined by the UE according to a plurality of channel state information reference signals CSI-RS, the first coefficient set includes a plurality of first coefficients, and the first coefficient represents a downlink channel. Statistical characteristics.

23. 根据权利要求 22所述的基站，其特征在于，所述动态信令携带第一指示信息，所述第一指示信息用于指示第三系数集合中的能够用作所述第二系数的第三系数，所述第三系数集合包括至少一个第三系数，所述第三系数为用于信道估计的候选系数，其中所述第三系数集合是所述 UE根据所述第一系数集合确定的。 The base station according to claim 22, wherein the dynamic signaling carries first indication information, where the first indication information is used to indicate that the third coefficient set can be used as the second coefficient. a third coefficient, the third coefficient set includes at least one third coefficient, the third coefficient is a candidate coefficient for channel estimation, where the third coefficient set is determined by the UE according to the first coefficient set of.

24. 根据权利要求 22所述的基站，其特征在于，所述动态信令携带第二指示信息，所述第二指示信息用于指示所述第一系数集合中的 m个第一系数，以便所述 UE根据所述 m个第一系数确定所述第二系数，其中 m为正整数。 The base station according to claim 22, wherein the dynamic signaling carries a Two indication information, where the second indication information is used to indicate m first coefficients in the first coefficient set, so that the UE determines the second coefficient according to the m first coefficients, where m is positive Integer.

25. 一种用户设备，其特征在于，包括： 25. A user equipment, comprising:

处理器，用于根据多个信道状态信息参考信号 CSI-RS , 确定第一系数集合，所述第一系数集合包括多个第一系数，所述第一系数表示下行信道统计特性；根据所述第一系数集合，确定第二系数，所述第二系数为信道估计系数；根据所述第二系数和解调参考信号 DMRS, 进行信道估计。 a processor, configured to determine, according to the multiple channel state information reference signals CSI-RS, the first coefficient set, the first coefficient set includes a plurality of first coefficients, where the first coefficient represents a downlink channel statistical characteristic; a first coefficient set, the second coefficient is determined, the second coefficient is a channel estimation coefficient; and channel estimation is performed according to the second coefficient and the demodulation reference signal DMRS.

26. 根据权利要求 25所述的用户设备，其特征在于，所述下行信道统计特性包括下行信道的时域相关矩阵、频域相关矩阵、时延功率谱或多普勒功率谱。 The user equipment according to claim 25, wherein the downlink channel statistics include a time domain correlation matrix of a downlink channel, a frequency domain correlation matrix, a delay power spectrum, or a Doppler power spectrum.

27. 根据权利要求 25或 26所述的用户设备，其特征在于，所述处理器具体用于根据所述第一系数集合，确定第三系数集合，所述第三系数集合包括至少一个第三系数，所述第三系数为用于信道估计的候选系数；根据所述 DMRS , 确定第四系数，所述第四系数为用于信道估计的粗略参考系数；从所述第三系数集合中选取与所述第四系数距离最小的第三系数作为所述第二系数，或者从所述第三系数集合中选取与所述第四系数相关值最大的第三系数作为所述第二系数。 The user equipment according to claim 25 or 26, wherein the processor is specifically configured to determine a third coefficient set according to the first coefficient set, where the third coefficient set includes at least one third a coefficient, the third coefficient being a candidate coefficient for channel estimation; determining, according to the DMRS, a fourth coefficient, the fourth coefficient being a coarse reference coefficient for channel estimation; selecting from the third coefficient set A third coefficient having the smallest distance from the fourth coefficient is used as the second coefficient, or a third coefficient having the largest correlation value with the fourth coefficient is selected from the third coefficient set as the second coefficient.

28. 根据权利要求 25或 26所述的用户设备，其特征在于，所述用户设备还包括接收器； The user equipment according to claim 25 or 26, wherein the user equipment further comprises a receiver;

所述处理器具体用于根据所述第一系数集合，确定第三系数集合，所述第三系数集合包括至少一个第三系数，所述第三系数为用于信道估计的候选系数； The processor is specifically configured to determine, according to the first set of coefficients, a third coefficient set, where the third coefficient set includes at least one third coefficient, where the third coefficient is a candidate coefficient used for channel estimation;

所述接收器用于从基站接收携带第一指示信息的动态信令，所述第一指示信息用于指示所述第三系数集合中的能够用作所述第二系数的第三系数；所述处理器还用于将所述能够用作所述第二系数的第三系数作为所述第二系数。 The receiver is configured to receive dynamic signaling that carries the first indication information, where the first indication information is used to indicate a third coefficient that can be used as the second coefficient in the third coefficient set; The processor is further configured to use the third coefficient that can be used as the second coefficient as the second coefficient.

29. 根据权利要求 27或 28所述的用户设备，其特征在于，所述处理器具体用于对所述多个第一系数进行处理，确定所述至少一个第三系数，其中，所述对所述多个第一系数进行处理采用以下处理方式中的至少一种：加权处理、平均处理和选择处理。 The user equipment according to claim 27 or 28, wherein the processor is specifically configured to process the plurality of first coefficients to determine the at least one third coefficient, wherein the pair The plurality of first coefficients are processed by at least one of the following processing methods: weighting processing, averaging processing, and selection processing.

30. 根据权利要求 29所述的用户设备，其特征在于，所述加权处理包括根据 CSI-RS RSRP所进行的加权处理，和 /或 ^据所述 DMRS的发送加权值所进行的加权处理。 The user equipment according to claim 29, wherein the weighting processing includes weighting processing according to CSI-RS RSRP, and/or weighting processing according to a transmission weight value of the DMRS.

31. 根据权利要求 25或 26所述的用户设备，其特征在于，所述用户设备还包括接收器； The user equipment according to claim 25 or 26, wherein the user equipment further comprises a receiver;

所述接收器用于从基站接收携带第二指示信息的动态信令，所述第二指示信息用于指示所述第一系数集合中的 m个第一系数，其中 m为正整数；所述处理器具体用于根据所述 m个第一系数，确定所述第二系数。 The receiver is configured to receive dynamic signaling that carries the second indication information from the base station, where the second indication information is used to indicate m first coefficients in the first coefficient set, where m is a positive integer; The device is specifically configured to determine the second coefficient according to the m first coefficients.

32. 根据权利要求 31所述的用户设备，其特征在于，所述处理器具体用于根据所述 CSI-RS 参考信号接收功率 RSRP, 对所述 m个第一系数进行加权，确定所述第二系数；或者，根据所述 DMRS的发送加权值，对所述 m 个第一系数进行加权，确定所述第二系数；或者，对所述 m个第一系数进行平均，确定所述第二系数；或者，从所述 m个第一系数中选取一个第一系数作为所述第二系数。 The user equipment according to claim 31, wherein the processor is specifically configured to: according to the CSI-RS reference signal received power RSRP, weight the m first coefficients, determine the first Or determining, according to the transmission weighting value of the DMRS, the m first coefficients, determining the second coefficient; or, averaging the m first coefficients, determining the second a coefficient; or, selecting a first coefficient from the m first coefficients as the second coefficient.

33. 根据权利要求 25至 32中任一项所述的用户设备，其特征在于，所述处理器还用于在所述进行信道估计之后，根据信道估计所得到的结果对数据进行解调。 The user equipment according to any one of claims 25 to 32, wherein the processor is further configured to demodulate the data according to the result obtained by the channel estimation after performing the channel estimation.

34. —种基站，其特征在于，包括： 34. A base station, comprising:

处理器，用于生成动态信令，所述动态信令用于用户设备 UE确定第二系数，其中所述第二系数为信道估计系数； a processor, configured to generate dynamic signaling, where the dynamic signaling is used by the user equipment UE to determine a second coefficient, where the second coefficient is a channel estimation coefficient;

发送器，用于向所述 UE发送所述动态信令，以便所述 UE根据第一系数集合和所述动态信令确定所述第二系数，并根据所述第二系数和解调参考信号 DMRS进行信道估计，所述第一系数集合是所述 UE根据多个信道状态信息参考信号 CSI-RS确定的，所述第一系数集合包括多个第一系数，所述第一系数表示下行信道统计特性。 a transmitter, configured to send the dynamic signaling to the UE, so that the UE determines the second coefficient according to the first coefficient set and the dynamic signaling, and according to the second coefficient and a demodulation reference signal The DMRS performs channel estimation, where the first coefficient set is determined by the UE according to a plurality of channel state information reference signals CSI-RS, the first coefficient set includes a plurality of first coefficients, and the first coefficient represents a downlink channel. Statistical characteristics.

35. 根据权利要求 34所述的基站，其特征在于，所述动态信令携带第一指示信息，所述第一指示信息用于指示第三系数集合中的能够用作所述第二系数的第三系数，所述第三系数集合包括至少一个第三系数，所述第三系数为用于信道估计的候选系数，其中所述第三系数集合是所述 UE根据所述第一系数集合确定的。 The base station according to claim 34, wherein the dynamic signaling carries first indication information, where the first indication information is used to indicate that the third coefficient set can be used as the second coefficient. a third coefficient, the third coefficient set includes at least one third coefficient, the third coefficient is a candidate coefficient for channel estimation, where the third coefficient set is determined by the UE according to the first coefficient set of.

36. 根据权利要求 34所述的基站，其特征在于，所述动态信令携带第二指示信息，所述第二指示信息用于指示所述第一系数集合中的 m个第一系数，以便所述 UE根据所述 m个第一系数确定所述第二系数，其中 m为正整数。 The base station according to claim 34, wherein the dynamic signaling carries a Two indication information, where the second indication information is used to indicate m first coefficients in the first coefficient set, so that the UE determines the second coefficient according to the m first coefficients, where m is positive Integer.