TW201815087A

TW201815087A - Beam training method, terminal and base station

Info

Publication number: TW201815087A
Application number: TW106121599A
Authority: TW
Inventors: 高秋彬; 拉蓋施塔瑪拉卡; 潤華陳; 李輝; 李傳軍
Original assignee: 電信科學技術研究院
Priority date: 2016-09-30
Filing date: 2017-06-28
Publication date: 2018-04-16
Also published as: CN107888243A; CN107888243B; WO2018059003A1; TWI679857B

Abstract

Provided in the present disclosure are a beam training method, a terminal and a base station, solving a problem in the beam training method in the related art that for each level of beam training signal sent by the terminal, the base station needs to search again for a corresponding receiving beam, thereby increasing the time and complexity of beam training. The method of the present disclosure comprises: according to a first beam training signal sent by the base station, determining a downlink receiving beam corresponding to a downlink transmitting beam in a first downlink transmitting beam set; determining a downlink receiving beam of a second beam training signal according to a correspondence between the downlink transmitting beam and the downlink receiving beam and configuration information of the second beam training signal sent by the base station, wherein the configuration information is used for indicating related information of the second beam training signal and the training signal of the downlink transmitting beam of the base station, and the downlink transmitting beam of the base station belongs to the first downlink transmitting beam set; and receiving the second beam training signal by using the downlink receiving beam of the second beam training signal, and determining the optimal downlink receiving beam or the downlink transmitting beam.

Description

一種波束訓練方法、終端及基地台 Beam training method, terminal and base station

本發明係有關通信應用的技術領域，特別是指一種波束訓練方法，終端及基地台。 The present invention relates to the technical field of communication applications, and particularly to a beam training method, a terminal, and a base station.

鑒於多輸入多輸出(Multiple-Input Multiple-Output，簡稱：MIMO)技術對於提高峰值速率與系統頻譜利用率的重要作用，長期演進(Long Term Evolution，簡稱：LTE)/增強型長期演進(LTE-Advanced，簡稱：LTE-A)等無線接入技術標準都是以多輸入多輸出+正交分頻多工(Orthogonal Frequency Division Multiplexing，簡稱：OFDM)技術為基礎構建起來的。多輸入多輸出技術的性能增益來自於多天線系統所能獲得的空間自由度，因此多輸入多輸出技術在標準化發展過程中的一個最重要的演進方向便是維度的擴展。 In view of the important role of Multiple-Input Multiple-Output (MIMO) technology to improve the peak rate and system spectrum utilization, Long Term Evolution (LTE) / Enhanced Long-Term Evolution (LTE- Advanced, LTE-A, and other wireless access technology standards are built on the basis of multiple-input multiple-output + orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM for short) technology. The performance gain of multiple input multiple output technology comes from the degree of spatial freedom that multiple antenna systems can obtain. Therefore, one of the most important evolution directions of multiple input multiple output technology in the standardization development process is the expansion of dimensions.

在長期演進Rel-8中，最多可以支援4層的多輸入多輸出傳輸。Rel-9重點對多用戶多輸入多輸出(Multi-User MIMO，簡稱：MU-MIMO)技術進行了增強，傳輸模式(Transmission Mode，簡稱：TM)-8的多用戶多輸入多輸出傳輸中最多可以支援4個下行資料層。Rel-10則引入支援8天線埠進一步提高了通道狀態資訊的空間解析度，並進一步將單用戶多輸入多輸出(Single-User MIMO，簡稱：SU-MIMO)的傳輸能力擴展至最多8個資料層。Rel-13和Rel-14引入了全尺寸多輸入多輸出(Full-Dimension MIMO，簡稱；FD-MIMO)技術支援到32埠，實現全維度以及垂直方向的波束賦形。 In the long-term evolution Rel-8, it can support up to 4 layers of multiple input multiple output transmission. Rel-9 focuses on enhancements to Multi-User MIMO (Multi-User MIMO, MU-MIMO for short) technology. Transmission Mode (TM) -8 multi-user multi-input and multi-output transmission Can support 4 downlink data layers. Rel-10 introduces support for 8 antenna ports to further improve the spatial resolution of channel status information, and further extends the single-user multiple-input multiple-output (Single-User MIMO, SU-MIMO for short) transmission capacity to a maximum of eight data Floor. Rel-13 and Rel-14 introduced Full-Dimension Multiple Input Multiple Output (Full-Dimension MIMO, abbreviated as FD-MIMO) technology to support 32 ports to achieve full-dimensional and vertical beamforming.

為了進一步提升多輸入多輸出技術，移動通信系統中引入大規模天線技術。對於基地台，全數位化的大規模天線可以有高達128/256/512個天線輻射子(radiator)，以及高達128/256/512個收發信機，每個天線輻射子連接一個收發信機。通過發送高達128/256/512個天線埠的導頻信號，使得終端測量通道狀態資訊並回饋。對於終端，也可以配置高達32/64個天線輻射子的天線陣列。通過基地台和終端兩側的波束賦形，獲得巨大的波束賦形增益，以彌補路徑損耗帶來的信號衰減。尤其是在高頻段通信，例如30GHz頻點上，路徑損耗使得無線信號的覆蓋範圍極其有限。通過大規模天線技術，可以將無線信號的覆蓋範圍擴大到可以實用的範圍內。 In order to further improve the multiple input multiple output technology, a large-scale antenna technology is introduced into the mobile communication system. For the base station, a fully-digitized large-scale antenna can have up to 128/256/512 antenna radiators and up to 128/256/512 transceivers, and each antenna radiator is connected to one transceiver. By sending pilot signals with up to 128/256/512 antenna ports, the terminal measures channel status information and returns. For the terminal, an antenna array with up to 32/64 antenna radiators can also be configured. Through beamforming on both sides of the base station and the terminal, a huge beamforming gain is obtained to compensate for signal attenuation caused by path loss. Especially in high-frequency communication, such as at 30GHz, the path loss makes the coverage of wireless signals extremely limited. Through large-scale antenna technology, the coverage of wireless signals can be extended to a practical range.

全數位天線陣列，每個天線輻射子都有獨立的收發信機，將會使得設備的尺寸、成本和功耗大幅度上升。特別是對於收發信機的類比數位轉換器(ADC)和數位類比轉換器(DAC)，功耗降低和性能提升都比較有限。為了降低設備的尺寸、成本和功耗，基於模擬波束賦形的技術方案被提出。如圖1和圖2所示。模擬波束賦形的主要特點是通過移相器對中頻(圖1)或射頻信號(圖2)進行加權賦形。 All digital antenna arrays, each antenna radiator has an independent transceiver, which will greatly increase the size, cost and power consumption of the device. Especially for analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) for transceivers, power reduction and performance improvements are limited. In order to reduce the size, cost and power consumption of the device, a technical solution based on analog beamforming is proposed. As shown in Figure 1 and Figure 2. The main feature of analog beamforming is the weighted shaping of intermediate frequency (Figure 1) or radio frequency signals (Figure 2) by phase shifters.

為了進一步提升類比波束賦形性能，一種數位類比混合波束賦形收發架構方案被提出，如圖3所示。在圖3中，發送端和接收端分別有和個收發信機，發送端天線輻射子數N ^T>，接收端天線輻射子數N ^R>；波束賦形支持的最大平行傳輸流數量為min(,)。圖3的混合波束賦形結構在數位波束賦形靈活性和類比波束賦形的低複雜度間做了平衡。 In order to further improve the performance of analog beamforming, a digital analog hybrid beamforming transceiver architecture scheme is proposed, as shown in FIG. 3. In Figure 3, the sender and receiver have with Transceivers, the number of radiating elements of the transmitting antenna N ^T > , The number of radiators at the receiving end N ^R > ; The maximum number of parallel transport streams supported by beamforming is min ( , ). The hybrid beamforming structure in Figure 3 balances the flexibility of digital beamforming with the low complexity of analog beamforming.

模擬波束賦形和數模混合波束賦形都需要調整收發兩端的類比波束賦形權重值，以使得其所形成的波束能對準通信的對端。波束賦形的權重值通常通過發送訓練信號獲得。但相關技術中的波束訓練方法中，終端對於基地台發送的每級波束訓練信號均需要重新搜索相應的接收波束，大大增加了波束訓練的時長及複雜度。 Both the analog beamforming and the digital-analog mixed beamforming need to adjust the analog beamforming weights at the transmitting and receiving ends so that the beams formed by them can be aligned with the opposite end of the communication. Beamforming weights are usually obtained by sending training signals. However, in the beam training method in the related art, the terminal needs to search for the corresponding receiving beam again for each level of the beam training signal sent by the base station, which greatly increases the length and complexity of the beam training.

本發明的目的在於提供一種波束訓練方法、終端及基地台，用以解決相關技術中的波束訓練方法中，終端對於基地台發送的每級波束訓練信號均需要重新搜索相應的接收波束，大大增加了波束訓練的時長及複雜度的問題。 An object of the present invention is to provide a beam training method, a terminal, and a base station, which are used to solve the beam training method in the related technology. The terminal needs to search for a corresponding receiving beam for each level of the beam training signal sent by the base station, greatly increasing The length and complexity of beam training are discussed.

為了實現上述目的，本發明提供了一種波束訓練方法，應用於終端，包括：根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束；根據該下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束或者最佳下行接收波束。 In order to achieve the above object, the present invention provides a beam training method, which is applied to a terminal and includes: determining a downlink receiving beam corresponding to a downlink transmitting beam in a first downlink transmitting beam set according to a first beam training signal sent by a base station; Determine the downlink receive beam of the second beam training signal according to the correspondence between the downlink transmit beam and the downlink receive beam and the configuration information of the second beam training signal sent by the base station, and the configuration information is used to indicate that the second beam training signal and the Information about the training signal of the base station ’s downlink transmit beam, the base station ’s downlink transmit beam belongs to the first downlink transmit beam set; using the downlink receive beam of the second beam training signal to receive the second beam training signal, and Determine the best downlink transmit beam or best downlink receive beam.

其中，所述根據該下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定該第二波束訓練信號的下行接收波束的步驟包括：根據基地台發送的第二波束訓練信號的配置資訊，確定與該第二波束訓練信號相關的基地台下行發送波束；根據該下行發送波束與下行接收波束的對應關係，確定與該基地台下行發送波束對應的第一下行接收波束；根據該第一下行接收波束，確定該第二波束訓練信號的下行接收波束。 The step of determining the downlink receiving beam of the second beam training signal according to the correspondence between the downlink transmitting beam and the downlink receiving beam and the configuration information of the second beam training signal sent by the base station includes: The configuration information of the second beam training signal determines the downlink transmission beam of the base station related to the second beam training signal; and determines the correspondence with the downlink transmission beam of the base station according to the correspondence between the downlink transmission beam and the downlink reception beam. A first downlink receiving beam; and determining a downlink receiving beam of the second beam training signal according to the first downlink receiving beam.

其中，所述根據該第一下行接收波束，確定該第二波束訓練信號的下行接收波束的步驟包括：將該第一下行接收波束，作為該第二波束訓練信號的下行接收波束；或者構造與該第一下行接收波束相關的下行接收波束集合，並將該下行接收波束集合作為該第二波束訓練信號的下行接收波束。 Wherein, the step of determining a downlink receiving beam of the second beam training signal according to the first downlink receiving beam includes: using the first downlink receiving beam as a downlink receiving beam of the second beam training signal; or Constructing a downlink receiving beam set related to the first downlink receiving beam, and using the downlink receiving beam set as a downlink receiving beam of the second beam training signal.

其中，該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間相關性大於第一預設閾值或者該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間指向的角度差處於第一預設範圍內。 Wherein, the spatial correlation between the downlink reception beam in the downlink reception beam set and the first downlink reception beam is greater than a first preset threshold or the downlink reception beam in the downlink reception beam set and the first downlink reception beam The angle difference of the spatial orientation is within a first preset range.

其中，該配置資訊用於指示該第二波束訓練信號與該基地台下行發送波束的訓練信號的準同位(Quasi-co-located，簡稱：QCL)資訊。 The configuration information is used to indicate Quasi-co-located (QCL) information of the second beam training signal and the training signal of the base station's downlink transmission beam.

其中，利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行接收波束的步驟包括：在該第二波束訓練信號的下行接收波束中，選擇接收信號功率最強的下行接收波束為最佳下行接收波束。 Wherein, using the downlink receiving beam of the second beam training signal to receive the second beam training signal and determining the optimal downlink receiving beam includes: selecting the strongest received signal power among the downlink receiving beams of the second beam training signal. The downlink receiving beam is the best downlink receiving beam.

其中，利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束的步驟包括：在該第二波束訓練信號的下行發送波束中，選擇接收信號功率最強的下行接收波束為最佳下行發送波束。 The step of using the downlink receiving beam of the second beam training signal to receive the second beam training signal and determining the optimal downlink transmitting beam includes: selecting the strongest received signal power among the downlink transmitting beams of the second beam training signal. The downlink receiving beam is the best downlink transmitting beam.

為解決上述技術問題，本發明的實施例還提供了一種終端，包括：第一確定模組，用於根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束；第二確定模組，用於根據該下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；第三確定模組，用於利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束或者最佳下行接收波束。 In order to solve the above technical problem, an embodiment of the present invention further provides a terminal, including: a first determining module, configured to determine a downlink transmission in a first downlink transmission beam set according to a first beam training signal sent by a base station. A downlink receiving beam corresponding to the beam; a second determining module configured to determine the downlink receiving of the second beam training signal according to the correspondence between the downlink transmitting beam and the downlink receiving beam and the configuration information of the second beam training signal sent by the base station Beam, the configuration information is used to indicate related information of the second beam training signal and the training signal of the base station ’s downlink transmission beam, and the base station ’s downlink transmission beam belongs to the first downlink transmission beam set; a third determination module For receiving the second beam training signal by using the downlink receiving beam of the second beam training signal, and determining an optimal downlink transmission beam or an optimal downlink reception beam.

其中，該第二確定模組包括：第一確定子模組，用於根據基地台發送的第二波束訓練信號的配置資訊，確定與該第二波束訓練信號相關的基地台下行發送波束；第二確定子模組，用於根據該下行發送波束與下行接收波束的對應關係，確定與該基地台下行發送波束對應的第一下行接收波束；第三確定子模組，根據該第一下行接收波束，確定該第二波束訓練信號的下行接收波束。 The second determining module includes: a first determining submodule, configured to determine a base station downlink transmission beam related to the second beam training signal according to the configuration information of the second beam training signal sent by the base station; The second determining submodule is configured to determine a first downlink receiving beam corresponding to the downlink transmitting beam of the base station according to the correspondence between the downlink transmitting beam and the downlink receiving beam; the third determining submodule is based on the first A downlink receiving beam, and determining a downlink receiving beam of the second beam training signal.

其中，該第三確定子模組用於將該第一下行接收波束，作為該第二波束訓練信號的下行接收波束；或者構造與該第一下行接收波束相關的下行接收波束集合，並將該下行接收波束集合作為該第二波束訓練信號的下行接收波束。 The third determining sub-module is configured to use the first downlink receiving beam as a downlink receiving beam of the second beam training signal; or construct a downlink receiving beam set related to the first downlink receiving beam, and And using the downlink receiving beam set as a downlink receiving beam of the second beam training signal.

其中，該配置資訊用於指示該第二波束訓練信號與該基地台下行發送波束的訓練信號的準同位資訊。 The configuration information is used to indicate the quasi-parity information of the second beam training signal and the training signal of the base station's downlink transmission beam.

其中，該第三確定模組用於在該第二波束訓練信號的下行接收波束中，選擇接收信號功率最強的下行接收波束為最佳下行接收波束。 The third determining module is configured to select a downlink receiving beam with the strongest received signal power among the downlink receiving beams of the second beam training signal as the best downlink receiving beam.

其中，該第三確定模組用於在該第二波束訓練信號的下行發送波束中，選擇接收信號功率最強的下行接收波束為最佳下行發送波束。 The third determining module is configured to select the downlink receiving beam with the strongest received signal power among the downlink transmitting beams of the second beam training signal as the best downlink transmitting beam.

為解決上述技術問題，本發明的實施例還提供了一種波束訓練方法，應用於基地台，包括：向終端發送第一波束訓練信號，並接收終端根據該第一波束訓練信號發送的第一推薦波束資訊，該第一波束訓練信號為第一下行發送波束集合中的下行發送波束對應的訓練信號；向終端發送第二波束訓練信號的配置資訊，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；向該終端發送第二波束訓練信號。 To solve the above technical problems, an embodiment of the present invention further provides a beam training method, which is applied to a base station and includes: sending a first beam training signal to a terminal, and receiving a first recommendation sent by the terminal according to the first beam training signal. Beam information, the first beam training signal is a training signal corresponding to a downlink transmission beam in the first downlink transmission beam set; and sending configuration information of the second beam training signal to the terminal, the configuration information is used to indicate the second beam training Information related to the signal and the training signal of the downlink transmission beam of the base station, the downlink transmission beam of the base station belongs to the first downlink transmission beam set; and the second beam training signal is sent to the terminal.

其中，向終端發送第一波束訓練信號的步驟包括：確定第一下行發送波束集合，該第一下行發送波束集合包括多個下行發送波束，每個下行發送波束對應一組波束賦形權重值；將該第一下行發送波束集合中的下行發送波束按照對應的波束賦形取值進行賦形後，得到該第一波束訓練信號併發送給終端。 The step of sending a first beam training signal to the terminal includes: determining a first downlink transmission beam set, where the first downlink transmission beam set includes multiple downlink transmission beams, and each downlink transmission beam corresponds to a set of beamforming weights. After the downlink transmission beams in the first downlink transmission beam set are shaped according to the corresponding beamforming values, the first beam training signal is obtained and sent to the terminal.

其中，向終端發送第二波束訓練信號的步驟包括：在第一下行發送波束集合中選取一下行發送波束作為基地台下行發送波束；構造與該基地台下行發送波束相關的第二下行發送波束集合；將該第二下行發送波束集合中的下行發送波束按照預設的波束賦形取值進行賦形後，得到該第二波束訓練信號併發送給終端。 The step of sending a second beam training signal to the terminal includes: selecting a row transmission beam from the first downlink transmission beam set as a base station downlink transmission beam; and constructing a second downlink related to the base station downlink transmission beam. A transmission beam set; after forming a downlink transmission beam in the second downlink transmission beam set according to a preset beamforming value, the second beam training signal is obtained and sent to the terminal.

其中，在第一下行發送波束集合中選取一下行發送波束作為基地台下行發送波束的步驟包括：根據該第一推薦波束資訊，在該第一下行發送波束集合中選取一下行發送波束作為該基地台下行發送波束。 The step of selecting the next row transmission beam in the first downlink transmission beam set as the base station downlink transmission beam includes: selecting the next row transmission beam in the first downlink transmission beam set according to the first recommended beam information. As the downlink transmitting beam of the base station.

其中，該第二下行發送波束集合中的下行發送波束與基地台下行發送波束的空間相關性高於第二預設閾值，或者該第二下行發送波束集合中的下行發送波束與基地台下行發送波束的空間指向的角度差處於第二預設範圍內。 The spatial correlation between the downlink transmission beam in the second downlink transmission beam set and the downlink transmission beam of the base station is higher than a second preset threshold, or the downlink transmission beam in the second downlink transmission beam set is under the base station. The angular difference in the spatial orientation of the row transmission beam is within a second preset range.

為解決上述技術問題，本發明的實施例還提供了一種基地台，包括：第一收發模組，用於向終端發送第一波束訓練信號，並接收終端根據該第一波束訓練信號發送的第一推薦波束資訊，該第一波束訓練信號為第一下行發送波束集合中的下行發送波束對應的訓練信號；第二收發模組，用於向終端發送第二波束訓練信號的配置資訊，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；第三收發模組，用於向該終端發送第二波束訓練信號。 In order to solve the above technical problem, an embodiment of the present invention further provides a base station, including: a first transceiver module, configured to send a first beam training signal to a terminal, and receive a first signal sent by the terminal according to the first beam training signal. A recommended beam information, the first beam training signal is a training signal corresponding to a downlink transmission beam in the first downlink transmission beam set; a second transceiver module is configured to send configuration information of the second beam training signal to the terminal, the The configuration information is used to indicate the related information of the second beam training signal and the training signal of the base station's downlink transmission beam. The base station's downlink transmission beam belongs to the first downlink transmission beam set. The third transceiver module is used to: Send a second beam training signal to the terminal.

其中，該第一收發模組包括：第四確定子模組，用於確定第一下行發送波束集合，該第一下行發送波束集合包括多個下行發送波束，每個下行發送波束對應一組波束賦形權重值；第一發送子模組，用於將該第一下行發送波束集合中的下行發送波束按照對應的波束賦形取值進行賦形後，得到該第一波束訓練信號併發送給終端。 The first transceiver module includes: a fourth determining submodule, configured to determine a first downlink transmission beam set, where the first downlink transmission beam set includes multiple downlink transmission beams, and each downlink transmission beam corresponds to one Group beamforming weight value; a first sending submodule, configured to obtain the first beam training signal after shaping the downlink transmitting beams in the first downlink transmitting beam set according to the corresponding beamforming value And send it to the terminal.

其中，該第三收發模組包括：選取子模組，用於在第一下行發送波束集合中選取一下行發送波束作為基地台下行發送波束；構造子模組，用於構造與該基地台下行發送波束相關的第二下行發送波束集合；第二發送子模組，用於將該第二下行發送波束集合中的下行發送波束按照預設的波束賦形取值進行賦形後，得到該第二波束訓練信號併發送給終端。 The third transceiver module includes: a selection sub-module for selecting a row transmission beam from the first downlink transmission beam set as a base station downlink transmission beam; and a construction sub-module for constructing a connection with the base. A second downlink transmission beam set related to the downlink transmission beam of the station; a second transmission submodule, configured to shape the downlink transmission beams in the second downlink transmission beam set according to a preset beamforming value, The second beam training signal is obtained and sent to the terminal.

其中，該選取子模組用於根據該第一推薦波束資訊，在該第一下行發送波束集合中選取一下行發送波束作為該基地台下行發送波束。 The selection sub-module is configured to select a row transmission beam as the base station downlink transmission beam from the first downlink transmission beam set according to the first recommended beam information.

本發明實施例具有以下有益效果：本發明實施例的上述技術方案，根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束；根據下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，配置資訊用於指示第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，基地台下行發送波束屬於該第一下行發送波束集合；利用第二波束訓練信號的下行接收波束接收第二波束訓練信號，並確定最佳下行接收波束或者最佳下行發送波束。本發明實施例中根據第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，無需終端使用每個下行接收波束對第二波束訓練信號進行接收，加速了終端搜索接收波束的過程，降低了波束訓練所需的時間及複雜度。 The embodiment of the present invention has the following beneficial effects: According to the foregoing technical solution of the embodiment of the present invention, the downlink receiving beam corresponding to the downlink transmitting beam in the first downlink transmitting beam set is determined according to the first beam training signal sent by the base station; The correspondence between the transmit beam and the downlink receive beam and the configuration information of the second beam training signal sent by the base station determine the downlink receive beam of the second beam training signal, and the configuration information is used to indicate that the second beam training signal and the base station are downlink transmitted Relevant information about the training signal of the beam, the downlink transmission beam of the base station belongs to the first downlink transmission beam set; the downlink reception beam of the second beam training signal is used to receive the second beam training signal, and the best downlink reception beam or the most Best downlink transmit beam. In the embodiment of the present invention, the downlink receiving beam of the second beam training signal is determined according to the configuration information of the second beam training signal. The terminal does not need to use each downlink receiving beam to receive the second beam training signal, which speeds up the terminal to search for the receiving beam. Process, reducing the time and complexity required for beam training.

401~403‧‧‧步驟 401 ~ 403‧‧‧step

501~505‧‧‧步驟 501 ~ 505‧‧‧step

71‧‧‧第一確定模組 71‧‧‧First Confirmation Module

71‧‧‧第二確定模組 71‧‧‧Second Confirmation Module

721‧‧‧第一確定子模組 721‧‧‧First confirmed submodule

722‧‧‧第二確定子模組 722‧‧‧Second Confirmation Submodule

723‧‧‧第三確定子模組 723‧‧‧Third Confirmation Submodule

73‧‧‧第三確定模組 73‧‧‧ Third Confirmation Module

801~803‧‧‧步驟 801 ~ 803‧‧‧step

91‧‧‧第一收發模組 91‧‧‧The first transceiver module

911‧‧‧第四確定子模組 911‧‧‧Fourth Confirmation Submodule

912‧‧‧第一發送子模組 912‧‧‧First sending submodule

92‧‧‧第二收發模組 92‧‧‧Second Transceiver Module

93‧‧‧第三收發模組 93‧‧‧Third transceiver module

931‧‧‧選取子模組 931‧‧‧Select submodule

932‧‧‧構造子模組 932‧‧‧Construction submodule

933‧‧‧第二發送子模組 933‧‧‧Second sending submodule

1000‧‧‧處理器 1000‧‧‧ processor

1010‧‧‧收發機 1010‧‧‧ Transceiver

1020‧‧‧記憶體 1020‧‧‧Memory

1100‧‧‧處理器 1100‧‧‧ processor

1110‧‧‧收發機 1110‧‧‧ Transceiver

1120‧‧‧記憶體 1120‧‧‧Memory

1130‧‧‧使用者介面 1130‧‧‧user interface

圖1為相關技術中的模擬波束賦形中對中頻信號進行加權賦形的示意圖。 FIG. 1 is a schematic diagram of weighted shaping of an intermediate frequency signal in analog beamforming in the related art.

圖2為相關技術中的模擬波束賦形中對射頻信號進行加權賦形的示意圖。 FIG. 2 is a schematic diagram of weighted shaping of a radio frequency signal in analog beamforming in the related art.

圖3為相關技術中的數模混合波束賦形示意圖。 FIG. 3 is a schematic diagram of digital-analog mixed beamforming in the related art.

圖4為本發明的之一實施例的波束訓練方法的第一工作流程圖。 FIG. 4 is a first working flowchart of a beam training method according to an embodiment of the present invention.

圖5為本發明的之一實施例的波束訓練方法的第二工作流程圖。 FIG. 5 is a second working flowchart of a beam training method according to an embodiment of the present invention.

圖6為本發明的之一實施例中基地台與終端的交互流程圖。 FIG. 6 is a flowchart of interaction between a base station and a terminal according to an embodiment of the present invention.

圖7為本發明的之一實施例的終端的第一結構框圖。 FIG. 7 is a first structural block diagram of a terminal according to an embodiment of the present invention.

圖8為本發明的之一實施例的波束訓練方法的第三工作流程圖。 FIG. 8 is a third working flowchart of a beam training method according to an embodiment of the present invention.

圖9為本發明的之一實施例的基地台的第一結構框圖。 FIG. 9 is a first structural block diagram of a base station according to an embodiment of the present invention.

圖10為本發明的之一實施例的基地台的第二結構框圖。 FIG. 10 is a second structural block diagram of a base station according to an embodiment of the present invention.

圖11為本發明的之一實施例的終端的第二結構框圖。 FIG. 11 is a second structural block diagram of a terminal according to an embodiment of the present invention.

為使本發明要解決的技術問題、技術方案和優點更加清楚，下面將結合具體實施例及附圖進行詳細描述。 In order to make the technical problems, technical solutions and advantages of the present invention clearer, detailed descriptions will be given below in conjunction with specific embodiments and drawings.

本發明的之一實施例提供了一種波束訓練方法、終端及基地台，解決了相關技術中的波束訓練方法中，終端對於基地台發送的每級波束訓練信號均需要重新搜索相應的接收波束，大大增加了波束訓練的時長及複雜度的問題。 An embodiment of the present invention provides a beam training method, a terminal, and a base station. In the beam training method in the related art, the terminal needs to search for a corresponding receiving beam for each level of the beam training signal sent by the base station. It greatly increases the time and complexity of beam training.

如圖4所示，本發明的之一實施例的波束訓練方法，應用於終端，包括： As shown in FIG. 4, a beam training method according to an embodiment of the present invention, which is applied to a terminal, includes:

步驟401：根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束。 Step 401: Determine a downlink receiving beam corresponding to a downlink transmitting beam in a first downlink transmitting beam set according to a first beam training signal sent by a base station.

這裡的第一波束訓練信號可包括第一下行發送波束集合中每個波束對應的訓練信號，例如，第一下行發送波束集合中包括N ₁個下行發送波束，基地台可以發送N ₁個訓練信號，N ₁個訓練信號之間可以是多時多工(Time Division Multiplex，簡稱：TDM)、多頻多工(Frequency Division Multiplex，簡稱：FDM)、分碼多工(Code Division Multiple，簡稱：CDM)，或者各種多工方式的組合。 The first beam training signal here may include a training signal corresponding to each beam in the first downlink transmission beam set. For example, the first downlink transmission beam set includes N ₁ downlink transmission beams, and the base station may send N ₁ Training signals, between N ₁ training signals, can be Time Division Multiplex (TDM), Frequency Division Multiplex (FDM), Code Division Multiple (FDM) : CDM), or a combination of various multiplexing methods.

終端根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中部分或者全部的下行發送波束對應的下行接收波束。 The terminal determines, according to the first beam training signal sent by the base station, downlink receiving beams corresponding to some or all of the downlink sending beams in the first downlink sending beam set.

具體的，終端接收上述第一波束訓練信號，對第一波束訓練信號進行測量，選擇推薦的下行發送波束(第一推薦波束)，並針對每個第一推薦波束確定對應的下行接收波束，或者針對第一下行發送波束集合中的每個下行發送波束都確定一個對應的下行接收波束，保存第一下行發送波束集合中的每個下行發送波束與下行接收波束的對應關係。 Specifically, the terminal receives the first beam training signal, measures the first beam training signal, selects a recommended downlink transmission beam (first recommended beam), and determines a corresponding downlink reception beam for each first recommended beam, or A corresponding downlink reception beam is determined for each downlink transmission beam in the first downlink transmission beam set, and a correspondence relationship between each downlink transmission beam and the downlink reception beam in the first downlink transmission beam set is stored.

終端可以分別嘗試使用每個候選的接收波束對下行發送波束的訓練信號進行接收，並選擇接收信號功率最強的接收波束作為該下行發送波束的接收波束。 The terminal may separately try to receive the training signal of the downlink transmission beam by using each candidate receiving beam, and select the receiving beam with the strongest received signal power as the receiving beam of the downlink transmission beam.

步驟402：根據該下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合。 Step 402: Determine the downlink reception beam of the second beam training signal according to the correspondence between the downlink transmission beam and the downlink reception beam and the configuration information of the second beam training signal sent by the base station, and the configuration information is used to indicate the second beam. Information about the training signal and the training signal of the downlink transmission beam of the base station, and the downlink transmission beam of the base station belongs to the first downlink transmission beam set.

在本發明的之一實施例中，上述第二波束訓練信號包括第二下行發送波束集合中每個波束對應的訓練信號。該第二下行發送波束集合是由基地台先從第一下行發送波束集合中選取一個下行發送波束為基地台下行發送波束；構造與該基地台下行發送波束相關的第二下行發送波束集合；將該第二下行發送波束集合中的下行發送波束按照預設的波束賦形取值進行賦形後，得到該第二波束訓練信號併發送給終端。 In an embodiment of the present invention, the second beam training signal includes a training signal corresponding to each beam in the second downlink transmission beam set. In the second downlink transmission beam set, the base station first selects a downlink transmission beam from the first downlink transmission beam set as a base station downlink transmission beam; and constructs a second downlink transmission beam related to the base station downlink transmission beam. Set; after the downlink transmission beams in the second downlink transmission beam set are shaped according to a preset beamforming value, the second beam training signal is obtained and sent to the terminal.

進一步地，上述配置資訊可具體為用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的準同位資訊。本發明的之一實施例，根據基地台指示的多個波束訓練信號之間的準同位資訊，加速了終端搜索接收波束的過程，降低了複雜度。 Further, the above configuration information may be specifically used to indicate the quasi-parity information of the second beam training signal and the training signal of the downlink transmission beam of the base station. According to an embodiment of the present invention, according to the quasi-parity information between a plurality of beam training signals indicated by the base station, the process of searching for a receiving beam by the terminal is accelerated, and the complexity is reduced.

步驟403：利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束或者最佳下行接收波束。 Step 403: Use the downlink receiving beam of the second beam training signal to receive the second beam training signal, and determine an optimal downlink transmitting beam or an optimal downlink receiving beam.

具體的，可在該第二波束訓練信號的下行接收波束中，選擇接收信號功率最強的下行接收波束為最佳下行接收波束；在該第二波束訓練信號的下行發送波束中，選擇接收信號功率最強的下行接收波束為最佳下行發送波束。 Specifically, among the downlink receiving beams of the second beam training signal, the downlink receiving beam with the strongest received signal power may be selected as the best downlink receiving beam; among the downlink transmitting beams of the second beam training signal, the received signal power may be selected. The strongest downlink receive beam is the best downlink transmit beam.

本發明的實施例的波束訓練方法，根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束；根據下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，配置資訊用於指示第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，基地台下行發送波束屬於該第一下行發送波束集合；利用第二波束訓練信號的下行接收波束接收第二波束訓練信號，並確定最佳下行接收波束或者最佳下行發送波束。本發明的實施例中根據第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，無需終端使用每個下行接收波束對第二波束訓練信號進行接收，加速了終端搜索接收波束的過程，降低了波束訓練所需的時間及複雜度。 In the beam training method according to the embodiment of the present invention, a downlink reception beam corresponding to a downlink transmission beam in a first downlink transmission beam set is determined according to a first beam training signal sent by a base station; according to a correspondence between a downlink transmission beam and a downlink reception beam Relationship and configuration information of the second beam training signal sent by the base station to determine the downlink receiving beam of the second beam training signal, and the configuration information is used to indicate the related information of the second beam training signal and the training signal of the base station ’s downlink transmission beam, The base station downlink transmission beam belongs to the first downlink transmission beam set; the downlink reception beam using the second beam training signal receives the second beam training signal, and determines the best downlink reception beam or the best downlink transmission beam. In the embodiment of the present invention, the downlink receiving beam of the second beam training signal is determined according to the configuration information of the second beam training signal. The terminal does not need to use each downlink receiving beam to receive the second beam training signal, which speeds up the terminal to search for the receiving beam. The process reduces the time and complexity required for beam training.

如圖5所示，本發明的之一實施例的波束訓練方法，應用於終端，包括： As shown in FIG. 5, a beam training method according to an embodiment of the present invention, which is applied to a terminal, includes:

步驟501：根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束。 Step 501: Determine a downlink receiving beam corresponding to a downlink transmitting beam in a first downlink transmitting beam set according to a first beam training signal sent by a base station.

該步驟與上述步驟401相同，此處不在贅述。 This step is the same as the above step 401, and details are not described herein.

步驟502：根據基地台發送的第二波束訓練信號的配置資訊，確定與該第二波束訓練信號相關的基地台下行發送波束。 Step 502: Determine the base station downlink transmission beam related to the second beam training signal according to the configuration information of the second beam training signal sent by the base station.

具體的，根據上述配置資訊確定與第二波束訓練信號相關的基地台下行發送波束的訓練信號，根據基地台下行發送波束的訓練信號確定基地台下行發送波束。 Specifically, the training signal of the base station downlink transmission beam related to the second beam training signal is determined according to the configuration information, and the base station downlink transmission beam is determined according to the training signal of the base station downlink transmission beam.

由上可知，該配置資訊用於指示該第二波束訓練信號與該第一下行發送波束集合中基地台下行發送波束的訓練信號的相關資訊，如第二波束訓練信號與該第一下行發送波束集合中基地台下行發送波束的訓練信號的QCL資訊，終端根據基地台發送的配置資訊，可確定與第二波束訓練信號相關的基地台下行發送波束。 As can be seen from the above, the configuration information is used to indicate the related information of the second beam training signal and the training signal of the base station downlink transmission beam in the first downlink transmission beam set, such as the second beam training signal and the first downlink The QCL information of the training signals for the downlink transmission beams of the base station in the set of transmit beams, and the terminal may determine the downlink transmission beams of the base station related to the second beam training signal according to the configuration information sent by the base station.

步驟503：根據該下行發送波束與下行接收波束的對應關係，確定與該基地台下行發送波束對應的第一下行接收波束。 Step 503: Determine a first downlink reception beam corresponding to the downlink transmission beam of the base station according to the correspondence between the downlink transmission beam and the downlink reception beam.

步驟504：根據該第一下行接收波束，確定該第二波束訓練信號的下行接收波束。 Step 504: Determine a downlink receiving beam of the second beam training signal according to the first downlink receiving beam.

具體的，將該第一下行接收波束作為該第二波束訓練信號的下行接收波束；或者構造與該第一下行接收波束相關的下行接收波束集合，並將該下行接收波束集合作為該第二波束訓練信號的下行接收波束。 Specifically, the first downlink receiving beam is used as a downlink receiving beam of the second beam training signal; or a downlink receiving beam set related to the first downlink receiving beam is constructed, and the downlink receiving beam set is used as the first receiving beam set. The downlink receiving beam of the two-beam training signal.

該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間相關性大於第一預設閾值或者該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間指向的角度差處於第一預設範圍內。 The spatial correlation between the downlink reception beam in the downlink reception beam set and the first downlink reception beam is greater than a first preset threshold or the spatial orientation of the downlink reception beam in the downlink reception beam set and the first downlink reception beam. The angle difference is within a first preset range.

步驟505：利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束或者最佳下行接收波束。 Step 505: Use the downlink receiving beam of the second beam training signal to receive the second beam training signal, and determine an optimal downlink transmitting beam or an optimal downlink receiving beam.

該步驟與上述步驟403相同，此處不再贅述。 This step is the same as the above step 403, and is not repeated here.

本發明的實施例的波束訓練的方法，根據基地台發送的配置資訊，將上述第一下行接收波束或者將與該第一下行接收波束相關的下行接收波束集合作為該第二波束訓練信號的下行接收波束，在保證訓練精度的前提下，加速了終端搜索接收波束的過程，降低了波束訓練的時長及訓練複雜度。 According to the beam training method of the embodiment of the present invention, according to the configuration information sent by the base station, the first downlink receiving beam or a downlink receiving beam set related to the first downlink receiving beam is used as the second beam training signal. Under the premise of ensuring the training accuracy, the downlink receiving beams are accelerated, and the terminal searches for the receiving beams, which reduces the training time and training complexity of the beams.

下面結合圖6具體說明本發明的之一實施例中基地台與終端的工作流程。 The following specifically describes the working process of the base station and the terminal in one embodiment of the present invention with reference to FIG. 6.

如圖6所示，上述工作流程包括： As shown in Figure 6, the above workflow includes:

步驟601：基地台確定第一下行發送波束集合。 Step 601: The base station determines a first downlink transmission beam set.

基地台確定第一下行發送波束集合(簡稱：第一集合)，假設第一集合中共有N ₁個下行發送波束，每個下行波束對應一組波束賦形權重值，第n個波束的發送波束賦形權重值為，其中K 是波束賦形的天線輻射子數，可以小於基地台的天線輻射子數。且第一下行發送波束集合中的所有波束可覆蓋基地台所覆蓋的區域。 The base station determines the first set of downlink transmission beams (referred to as the first set). It is assumed that there are N ₁ downlink transmission beams in the first set, and each downlink beam corresponds to a set of beamforming weight values, and the transmission of the nth beam Beamforming weights are Where K is the number of antenna radiators for beamforming and can be less than the number of antenna radiators for the base station. And all the beams in the first downlink transmission beam set can cover the area covered by the base station.

步驟602：基地台發送第一波束訓練信號。 Step 602: The base station sends a first beam training signal.

基地台可以為第一集合中每個下行發送波束發射一個波束訓練信號。對於N ₁個下行發送波束，基地台可以發送N ₁個訓練信號。該N ₁個訓練信號之間可以是多時多工、多頻多工、分碼多工，或者各種多工方式的組合。例如，在以正交分頻多工為基礎的系統中，N ₁個訓練信號可以佔用N ₁個正交分頻多工符號，每個訓練信號佔用1個正交分頻多工符號，訓練信號之間為多時多工。也可以在一個正交分頻多工符號中發射多個波束的訓練信號，訓練信號之間為多頻多工，或者分碼多工。 The base station may transmit a beam training signal for each downlink transmission beam in the first set. For N ₁ downlink transmission beams, the base station can send N ₁ training signals. The N ₁ training signals may be a combination of multiple time multiplexing, multiple frequency multiplexing, code division multiplexing, or various multiplexing modes. For example, in a system based on orthogonal frequency division multiplexing, N ₁ training signals may occupy N ₁ orthogonal frequency division multiplexing symbols, and each training signal occupies 1 orthogonal frequency division multiplexing symbol. There is multiple time and multiplexing between signals. It is also possible to transmit training signals of multiple beams in one orthogonal frequency division multiplexing symbol, and the training signals are multi-frequency multiplexing or code division multiplexing.

假設一個資源單元上的待發送信號為s，則用第n個波束賦形之後的信號為：y=[y ₁ y ₂…y _K]^T=W _n s，其中，y _k將映射到天線輻射子k上發出。 Assuming that the signal to be transmitted on a resource unit is s , the signal after forming with the nth beam is: y = [ y ₁ y ₂ … y _K ] ^T = W _n s , where y _k will be mapped to the antenna Radiation k is emitted.

另外，上述第一波束訓練信號可以為週期性發送，與可以為非週期性發送。 In addition, the first beam training signal may be transmitted periodically, and may be transmitted non-periodically.

步驟603：終端對第一波束訓練信號進行測量，選擇第一推薦波束並將第一推薦波束相關資訊上報給基地台，並確定第一下行發送波束集合中的下行發送波束對應的下行接收波束。 Step 603: The terminal measures the first beam training signal, selects the first recommended beam, and reports information about the first recommended beam to the base station, and determines the downlink reception corresponding to the downlink transmission beam in the first downlink transmission beam set. Beam.

終端接收基地台發送的第一訓練信號，通過對第一訓練信號的測量，選擇推薦的下行發送波束(第一推薦波束)。例如，終端可以選擇訓練信號接收功率最強的波束為推薦波束。第一推薦波束是一個波束，也可以是多個波束。 The terminal receives the first training signal sent by the base station, and selects a recommended downlink transmission beam (first recommended beam) by measuring the first training signal. For example, the terminal may select the beam with the strongest receive power of the training signal as the recommended beam. The first recommended beam is one beam or multiple beams.

終端接收上述第一波束訓練信號，對第一波束訓練信號進行測量，選擇推薦的下行發送波束(第一推薦波束)，並針對每個第一推薦波束確定對應的下行接收波束，或者針對第一下行發送波束集合中的每個下行發送波束都確定一個對應的下行接收波束，保存第一下行發送波束集合中的每個下行發送波束與下行接收波束的對應關係。終端的接收波束可以是從候選的接收波束中選擇得到。終端共有個接收波束，每個接收波束對應一組波束賦形權重值，第n個波束的接收波束賦形權重值為，其中L是波束賦形的天線輻射子數，可以小於終端的天線輻射子數。對於一個下行波束訓練信號(或者其他的信號)，終端可以分別嘗試使用每個接收波束對其進行接收，選擇接收信號功率最強的接收波束作為該下行發送波束的接收波束。 The terminal receives the first beam training signal, measures the first beam training signal, selects a recommended downlink transmission beam (first recommended beam), and determines a corresponding downlink reception beam for each first recommended beam, or for the first Each downlink transmission beam in the downlink transmission beam set determines a corresponding downlink reception beam, and the correspondence between each downlink transmission beam and the downlink reception beam in the first downlink transmission beam set is stored. The receiving beam of the terminal may be selected from candidate receiving beams. Terminal share Receiving beams, each receiving beam corresponds to a set of beamforming weighting values, and the receiving beamforming weighting value of the nth beam is Where L is the number of antenna radiators for beamforming, which can be less than the number of antenna radiators for the terminal. For a downlink beam training signal (or other signal), the terminal may try to receive it using each receive beam separately, and select the receive beam with the strongest received signal power as the receive beam of the downlink transmit beam.

終端將第一推薦波束的相關資訊上報給基地台，其中，相關資訊包括第一推薦波束的標識，例如下行發送波束的編號。根據下行波束/波束訓練信號的多工方式的不同，終端回饋的推薦下行發送波束的資訊可以不同。例如，下行波束賦形信號在不同正交分頻多工符號(symbol)或者每子訊框(subframe)時分多工，終端測量並回饋選擇的下行時間資訊(正交分頻多工符號或者每子訊框索引(subframe index))。再例如，下行波束賦形信號在不同頻率資源(實體資源區塊(Physical Resource Block，簡稱：PRB)，子頻帶(subband))多工，終端測量並回饋選擇的下行頻率資訊(實體資源區塊或子頻帶索引(subband index))。上述相關的資訊還可以進一步包括終端收到的下行發送波束訓練信號強度資訊，例如接收信號功率水準等。 The terminal reports the related information of the first recommended beam to the base station, where the related information includes an identifier of the first recommended beam, such as a number of a downlink transmission beam. According to different multiplexing modes of the downlink beam / beam training signal, the information of the recommended downlink transmission beams returned by the terminal may be different. For example, the downlink beamforming signal has different orthogonal frequency division multiplexing symbols (symbols) or time division multiplexing for each sub-frame (subframe). The terminal measures and returns selected downlink time information (orthogonal frequency division multiplexing symbols or Per subframe index). For another example, the downlink beamforming signal is multiplexed on different frequency resources (Physical Resource Block (PRB), subband), and the terminal measures and returns the selected downlink frequency information (Physical Resource Block). Or subband index). The above related information may further include strength information of the downlink transmission beam training signal received by the terminal, such as the received signal power level.

終端保存第一推薦波束對應的下行接收波束。終端需要保存第一推薦波束與下行接收波束的對應關係。可選的，終端保存所有第一集合中波束對應的下行接收波束，保存其對應關係。這裡下行接收波束可以是指其在所有候選下行接收波束中的編號，也可以是指下行接收波束賦形的權重值本身。 The terminal stores a downlink receiving beam corresponding to the first recommended beam. The terminal needs to save the correspondence between the first recommended beam and the downlink receiving beam. Optionally, the terminal saves all downlink receiving beams corresponding to the beams in the first set, and saves their corresponding relationships. Here, the downlink receiving beam may refer to its number among all candidate downlink receiving beams, or it may refer to the weight value itself formed by the downlink receiving beam.

步驟604：基地台確定第二下行發送波束集合。 Step 604: The base station determines a second downlink transmission beam set.

基地台從第一集合中選擇一個下行發送波束(基地台下行發送波束)，再以該基地台下行發送波束為基礎確定第二下行發送波束集合(簡稱：第二集合)。該第一基地台發送波束可以是基於終端上報的第一推薦波束相關資訊確定，例如選擇強度最高的波束。基地台也可以不基於終端上報的第一推薦波束資訊選擇基地台下行發送波束。 The base station selects a downlink transmission beam (base station downlink transmission beam) from the first set, and then determines a second downlink transmission beam set (referred to as a second set) based on the base station downlink transmission beam. The beam transmitted by the first base station may be determined based on the first recommended beam related information reported by the terminal, such as selecting the beam with the highest intensity. The base station may not select the downlink transmission beam of the base station based on the first recommended beam information reported by the terminal.

可選的，第二集合中的下行發送波束與基地台下行發送波束空間相關性高於一定值，或者空間指向的角度差在一定範圍之內。 Optionally, the spatial correlation between the downlink transmission beams in the second set and the downlink transmission beams of the base station is higher than a certain value, or the angle difference between the spatial directions is within a certain range.

假設第二集合中共有N ₂個下行發送波束。作為一個特例，第二集合中有1個下行發送波束，該下行波束可以是基地台下行發送波束。 Assume that there are N ₂ downlink transmission beams in the second set. As a special case, there is one downlink transmission beam in the second set, and the downlink beam may be a downlink transmission beam of the base station.

步驟605：基地台發送第二波束訓練信號的配置資訊。 Step 605: The base station sends configuration information of the second beam training signal.

上述配置資訊包括第二波束訓練信號的時頻位置資訊等。該配置資訊還包括基地台下行發送波束的指示資訊，指示終端該第二波束訓練信號與基地台下行發送波束對應的波束訓練信號針對一個或者多個空間角度參數(空間到達角度均值，或者空間到達角度擴展，或者空間出發角度均值，或者空間出發角度擴展)是準同位的的。如果兩個信號針對一個空間角度參數是QCL的，則可以從一個信號的空間角度參數推測出另外一個信號的空間角度參數。 The configuration information includes time-frequency position information of the second beam training signal. The configuration information also includes indication information of the downlink transmission beam of the base station, instructing the terminal that the second beam training signal and the beam training signal corresponding to the downlink transmission beam of the base station are directed to one or more spatial angle parameters (mean space arrival angle average, or Expansion of space arrival angle, or mean value of space departure angle, or expansion of space departure angle) is quasi-parity. If two signals are QCL for one spatial angle parameter, the spatial angle parameter of the other signal can be inferred from the spatial angle parameter of one signal.

另外，第二訓練信號可以是週期性發送的，也可以是非週期性發送的。上述第二訓練信號可以是發送波束的訓練信號，也可以是接收波束的訓練信號(第二集合中只有一個下行發送波束)。 In addition, the second training signal may be sent periodically or aperiodically. The second training signal may be a training signal of a transmission beam or a training signal of a receiving beam (there is only one downlink transmission beam in the second set).

步驟606：基地台發送第二波束訓練信號。 Step 606: The base station sends a second beam training signal.

步驟607：終端根據第二波束訓練信號的配置資訊，確定與第二波束訓練信號QCL的基地台下行發送波束的訓練信號。 Step 607: The terminal determines, according to the configuration information of the second beam training signal, the training signal for the downlink transmission beam with the base station of the second beam training signal QCL.

步驟608：終端根據第一下行發送波束集合中下行發送波束對應的下行接收波束，確定與該基地台下行發送波束對應的第一下行接收波束。 Step 608: The terminal determines a first downlink reception beam corresponding to the downlink transmission beam of the base station according to a downlink reception beam corresponding to the downlink transmission beam in the first downlink transmission beam set.

步驟609：終端根據該第一下行接收波束，確定該第二波束訓練信號的下行接收波束，並利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，確定最佳下行接收波束或者最佳下行發送波束。 Step 609: The terminal determines the downlink reception beam of the second beam training signal according to the first downlink reception beam, and uses the downlink reception beam of the second beam training signal to receive the second beam training signal to determine the best downlink reception. Beam or optimal downlink transmit beam.

終端可以採用終端下行發送波束對應的第一下行接收波束(終端保存)接收第二波束訓練信號。 The terminal may use the first downlink receiving beam (saved by the terminal) corresponding to the downlink transmission beam of the terminal to receive the second beam training signal.

或者終端以終端下行發送波束對應的第一下行接收波束為基礎構造下行接收波束集合(簡稱：第三集合)。終端根據第二波束訓練信號在第三集合中選擇最佳的接收波束。終端可以分別嘗試使用第三集合中每個接收波束對第二訓練信號進行接收，選擇接收信號功率最強的接收波束作為最佳接收波束，並在該第二波束訓練信號的下行發送波束中，選擇接收信號功率最強的下行接收波束為最佳下行發送波束。 Alternatively, the terminal constructs a downlink receiving beam set (referred to as a third set for short) based on the first downlink receiving beam corresponding to the downlink transmitting beam of the terminal. The terminal selects the best receiving beam in the third set according to the second beam training signal. The terminal may try to use each receiving beam in the third set to receive the second training signal, select the receiving beam with the strongest received signal power as the best receiving beam, and select among the downlink transmitting beams of the second beam training signal. The downlink receiving beam with the strongest received signal power is the best downlink transmitting beam.

較佳的，第三集合中的下行接收波束與第一下行接收波束的空間相關性高於一定值，或者空間指向的角度差在一定範圍之內。 Preferably, the spatial correlation between the downlink receiving beam in the third set and the first downlink receiving beam is higher than a certain value, or the angle difference between the spatial directions is within a certain range.

下面具體說明上述第一集合和第二集合的關係。 The following specifically describes the relationship between the first set and the second set.

如果基地台的天線陣列為線性陣列，則發送波束的權重值可以由過取樣的DFT向量組成。對於線性陣列，假設天線輻射子數為N ₁，過取樣速率為O ₁，則過取樣的DFT向量有O ₁ N ₁個，具體為： ,k=0,1,2,...N ₁ O ₁-1 則第一集合中可以包括N ₁個波束，其波束賦形權重值分別為： u ₀,,,...,。則與第一集合中的波束關聯的第二集合中的波束的波束賦形權重值可以包括：,,,...,，共有O ₁個。 If the antenna array of the base station is a linear array, the weight value of the transmission beam may be composed of an oversampled DFT vector. For a linear array, assuming that the number of antenna radiators is N ₁ and the oversampling rate is O ₁ , there are O ₁ N ₁ DFT vectors for oversampling, specifically: , k = 0,1,2, ... N ₁ O ₁ -1 Then N ₁ beams can be included in the first set, and their beamforming weights are: u ₀ , , , ..., . With the beams in the first set The beamforming weight values of the beams in the associated second set may include: , , , ..., There are O _{1 in} total.

對於平面陣列，發送波束的權重值可以由過取樣的2D DFT向量組成。假設第一維度和第二維度的天線輻射子數分別為N ₁和N ₂，並且兩個維度的過取樣速率因數分別為O ₁和O ₂，則過取樣的DFT向量有O ₁ O ₂ N ₁ N ₂ 個： ,k=0,1,2,...N ₁ O ₁-1；l=0,1,2,...,N ₂ O ₂-1 For a planar array, the weight value of the transmit beam can consist of an oversampled 2D DFT vector. Assuming that the number of antenna radiators in the first and second dimensions are N ₁ and N ₂ , respectively, and the oversampling rate factors of the two dimensions are O ₁ and O ₂ , respectively, the oversampled DFT vector has O ₁ O ₂ N ₁ N ₂ , k = 0,1,2, ... N ₁ O ₁ -1; l = 0,1,2, ..., N ₂ O ₂ -1

則第一集合中可以包括N ₁ N ₂個波束，其波束賦形權重值為：{ z _k,l｜k=0,O ₁,2O ₁,...,(N ₁-1)O ₁；l=0,O ₂,2O ₂,...,(N ₂-1)O ₂}與第一集合中的波束(n ₁=0,1,...,N ₁-1；n ₂=0,1,2,...,N ₂-1)關聯的第二集合中的波束的波束賦形權重值可以包括：{ z _k,l｜k=n ₁ O ₁,n ₁ O ₁+1,...,(n ₁+1)O ₁-1；l=n ₂ O ₂,n ₂ O ₂+1,...,(n ₂+1)O ₂-1}共有O ₁ O ₂個。 Then, the first set may include N ₁ N ₂ beams, and beamforming weights are: { z _{k , l} | k = 0, O ₁ , 2 O ₁ , ..., ( N ₁ -1) O ₁ ; l = 0, O ₂ , 2 O ₂ , ..., ( N ₂ -1) O ₂ } and the beams in the first set ( n ₁ = 0,1, ..., N ₁ -1; n ₂ = 0,1,2, ..., N ₂ -1) The beamforming weights of the beams in the second set of associations can be Including: { z _{k , l} | k = n ₁ O ₁ , n ₁ O ₁ +1, ..., ( n ₁ +1) O ₁ -1; l = n ₂ O ₂ , n ₂ O ₂ +1 , ..., ( n ₂ +1) O ₂ -1} There are O ₁ O _{2 in} total.

本發明的實施例的波束訓練方法，根據基地台發送的配置資訊，將上述第一下行接收波束或者將與該第一下行接收波束相關的下行接收波束集合作為該第二波束訓練信號的下行接收波束，在保證訓練精度的前提下，加速了終端搜索接收波束的過程，降低了波束訓練的時長及訓練複雜度。另外，本發明採用兩級波束訓練在訓練、開銷和精度之間可以取得較好的平衡。 In the beam training method according to the embodiment of the present invention, according to the configuration information sent by the base station, the first downlink receiving beam or a downlink receiving beam set related to the first downlink receiving beam is used as the second beam training signal. Downlink receiving beams, on the premise of ensuring training accuracy, speed up the process of the terminal searching for receiving beams, and reduce the duration and training complexity of beam training. In addition, the invention adopts two-level beam training to achieve a good balance between training, overhead, and accuracy.

如圖7所示，本發明的之一實施例還提供了一種終端，包括：第一確定模組71，用於根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束；第二確定模組72，用於根據該下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；第三確定模組73，用於利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束或者最佳下行接收波束。 As shown in FIG. 7, an embodiment of the present invention further provides a terminal, including: a first determining module 71, configured to determine a first downlink transmission beam set according to a first beam training signal sent by a base station; A downlink receiving beam corresponding to the downlink transmitting beam of the second antenna; a second determining module 72 configured to determine the second beam training according to the correspondence between the downlink transmitting beam and the downlink receiving beam and the configuration information of the second beam training signal sent by the base station; The downlink receiving beam of the signal, the configuration information is used to indicate the related information of the second beam training signal and the training signal of the base station downlink transmission beam, and the base station downlink transmission beam belongs to the first downlink transmission beam set; The three determining modules 73 are configured to receive the second beam training signal by using the downlink receiving beam of the second beam training signal, and determine an optimal downlink transmitting beam or an optimal downlink receiving beam.

本發明的之一實施例的終端，該第二確定模組72包括：第一確定子模組721，用於根據基地台發送的第二波束訓練信號的配置資訊，確定與該第二波束訓練信號相關的基地台下行發送波束；第二確定子模組722，用於根據該下行發送波束與下行接收波束的對應關係，確定與該基地台下行發送波束對應的第一下行接收波束；第三確定子模組723，用於根據該第一下行接收波束，確定該第二波束訓練信號的下行接收波束。本發明的之一實施例的終端，該第三確定子模組723用於將該第一下行接收波束，作為該第二波束訓練信號的下行接收波束；或者構造與該第一下行接收波束相關的下行接收波束集合，並將該下行接收波束集合作為該第二波束訓練信號的下行接收波束。 In a terminal according to an embodiment of the present invention, the second determining module 72 includes: a first determining submodule 721, configured to determine training with the second beam according to the configuration information of the second beam training signal sent by the base station. A base station downlink transmission beam related to the signal; a second determination submodule 722, configured to determine a first downlink reception beam corresponding to the downlink transmission beam of the base station according to the correspondence between the downlink transmission beam and the downlink reception beam A third determining submodule 723, configured to determine a downlink receiving beam of the second beam training signal according to the first downlink receiving beam. In the terminal according to an embodiment of the present invention, the third determining submodule 723 is configured to use the first downlink receiving beam as a downlink receiving beam of the second beam training signal; A beam-related downlink receiving beam set, and using the downlink receiving beam set as a downlink receiving beam of the second beam training signal.

本發明的之一實施例的終端，該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間相關性大於第一預設閾值或者該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間指向的角度差處於第一預設範圍內。 In a terminal according to an embodiment of the present invention, a spatial correlation between a downlink reception beam in the downlink reception beam set and the first downlink reception beam is greater than a first preset threshold or a downlink reception beam in the downlink reception beam set and The angular difference in the spatial orientation of the first downlink receiving beam is within a first preset range.

本發明的之一實施例的終端，該配置資訊用於指示該第二波束訓練信號與該基地台下行發送波束的訓練信號的準同位資訊。 In the terminal according to an embodiment of the present invention, the configuration information is used to indicate quasi-parity information of the second beam training signal and a training signal of a downlink transmission beam of the base station.

本發明的之一實施例的終端，該第三確定模組73用於在該第二波束訓練信號的下行接收波束中，選擇接收信號功率最強的下行接收波束為最佳下行接收波束。 In the terminal according to an embodiment of the present invention, the third determining module 73 is configured to select a downlink receiving beam with the strongest received signal power among the downlink receiving beams of the second beam training signal as the best downlink receiving beam.

本發明的之一實施例的終端，該第三確定模組73用於在該第二波束訓練信號的下行發送波束中，選擇接收信號功率最強的下行接收波束為最佳下行發送波束。 For a terminal according to an embodiment of the present invention, the third determining module 73 is configured to select a downlink receiving beam with the strongest received signal power among the downlink transmitting beams of the second beam training signal as the best downlink transmitting beam.

本發明的實施例的終端，根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束；根據下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，配置資訊用於指示第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，基地台下行發送波束屬於該第一下行發送波束集合；利用第二波束訓練信號的下行接收波束接收第二波束訓練信號，並確定最佳下行接收波束或者最佳下行發送波束。本發明實施例中根據第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，無需終端使用每個下行接收波束對第二波束訓練信號進行接收，加速了終端搜索接收波束的過程，降低了波束訓練所需的時間及複雜度。 The terminal according to the embodiment of the present invention determines the downlink receiving beam corresponding to the downlink transmitting beam in the first downlink transmitting beam set according to the first beam training signal sent by the base station; according to the correspondence between the downlink transmitting beam and the downlink receiving beam, and The configuration information of the second beam training signal sent by the base station determines the downlink receiving beam of the second beam training signal. The configuration information is used to indicate the related information of the second beam training signal and the training signal of the base station's downlink transmission beam. The base station The downlink transmission beam belongs to the first downlink transmission beam set; the downlink reception beam using the second beam training signal receives the second beam training signal, and determines the best downlink reception beam or the best downlink transmission beam. In the embodiment of the present invention, the downlink receiving beam of the second beam training signal is determined according to the configuration information of the second beam training signal. The terminal does not need to use each downlink receiving beam to receive the second beam training signal, which speeds up the terminal to search for the receiving beam. Process, reducing the time and complexity required for beam training.

如圖8所示，本發明的之一實施例還提供了一種波束訓練方法，應用於基地台，包括： As shown in FIG. 8, an embodiment of the present invention further provides a beam training method, which is applied to a base station and includes:

步驟801：向終端發送第一波束訓練信號，並接收終端根據該第一波束訓練信號發送的第一推薦波束資訊，該第一波束訓練信號為第一下行發送波束集合中的下行發送波束對應的訓練信號。 Step 801: Send a first beam training signal to the terminal, and receive first recommended beam information sent by the terminal according to the first beam training signal, where the first beam training signal corresponds to a downlink transmission beam in a first downlink transmission beam set. Training signal.

這裡，終端接收基地台發送的第一波束訓練信號，對第一波束訓練信號進行測量，選擇第一推薦波束並將第一推薦波束相關資訊上報給基地台，例如，終端可以選擇訓練信號接收功率最強的波束為推薦波束。第一推薦波束是一個波束，也可以是多個波束。 Here, the terminal receives the first beam training signal sent by the base station, measures the first beam training signal, selects the first recommended beam, and reports information about the first recommended beam to the base station. For example, the terminal may select the training signal to receive The most powerful beam is the recommended beam. The first recommended beam is one beam or multiple beams.

上述第一推薦波束資訊可包括第一推薦波束的標識，例如下行發送波束的編號。根據下行波束/波束訓練信號的多工方式的不同，終端回饋的推薦下行發送波束的資訊可以不同。例如，下行波束賦形信號在不同正交分頻多工符號或者每子訊框時分多工，終端測量並回饋選擇的下行時間資訊(正交分頻多工符號或者每子訊框索引)。再例如，下行波束賦形信號在不同頻率資源(實體資源區塊，子頻帶)多工，終端測量並回饋選擇的下行頻率資訊(實體資源區塊或子頻帶索引)。上述相關的資訊還可以進一步包括終端收到的下行發送波束訓練信號強度資訊，例如接收信號功率水準等。 The first recommended beam information may include an identifier of the first recommended beam, such as a number of a downlink transmission beam. According to different multiplexing modes of the downlink beam / beam training signal, the information of the recommended downlink transmission beam returned by the terminal may be different. For example, when the downlink beamforming signal is in different orthogonal frequency division multiplexing symbols or time division multiplexing in each sub-frame, the terminal measures and returns the selected downlink time information (orthogonal frequency division multiplexing symbol or index in each sub-frame). . For another example, the downlink beamforming signal is multiplexed on different frequency resources (physical resource blocks, sub-bands), and the terminal measures and returns the selected downlink frequency information (physical resource blocks or sub-band indexes). The above related information may further include strength information of the downlink transmission beam training signal received by the terminal, such as the received signal power level.

步驟802：向終端發送第二波束訓練信號的配置資訊，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合。 Step 802: Send configuration information of the second beam training signal to the terminal, where the configuration information is used to indicate related information of the second beam training signal and the training signal of the base station ’s downlink transmission beam, which belongs to the base station ’s downlink transmission beam. A first downlink transmission beam set.

步驟803：向該終端發送第二波束訓練信號。 Step 803: Send a second beam training signal to the terminal.

這裡基地台向終端發送第二波束訓練信號的配置資訊，使終端根據該對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定該第二波束訓練信號的下行接收波束，利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行接收波束或者最佳下行發送波束。 Here, the base station sends the configuration information of the second beam training signal to the terminal, so that the terminal determines the downlink receiving beam of the second beam training signal according to the correspondence relationship and the configuration information of the second beam training signal sent by the base station, and uses the first The downlink receiving beam of the two-beam training signal receives the second beam training signal, and determines the best downlink receiving beam or the best downlink transmitting beam.

具體的，上述配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的準同位資訊。該配置資訊具體用於指示終端該第二波束訓練信號與基地台下行發送波束對應的波束訓練信號針對一個或者多個空間角度參數(空間到達角度均值，或者空間到達角度擴展，或者空間出發角度均值，或者空間出發角度擴展)是準同位的的。如果兩個信號針對一個空間角度參數是QCL的，則可以從一個信號的空間角度參數推測出另外一個信號的空間角度參數。 Specifically, the configuration information is used to indicate the quasi-parity information of the second beam training signal and the training signal of the downlink transmission beam of the base station. The configuration information is specifically used to instruct the terminal that the second beam training signal and the beam training signal corresponding to the downlink transmission beam of the base station are directed to one or more spatial angle parameters (mean space arrival angle extension, or space arrival angle extension, or space departure angle). Mean, or spatial extension of angle of departure) is quasi-parity. If two signals are QCL for one spatial angle parameter, the spatial angle parameter of the other signal can be inferred from the spatial angle parameter of one signal.

進一步地，上述步驟801中向終端發送第一波束訓練信號的步驟包括：確定第一下行發送波束集合，該第一下行發送波束集合包括多個下行發送波束，每個下行發送波束對應一組波束賦形權重值；將該第一下行發送波束集合中的下行發送波束按照對應的波束賦形取值進行賦形後，得到該第一波束訓練信號併發送給終端。 Further, the step of sending a first beam training signal to the terminal in the above step 801 includes: determining a first downlink transmission beam set, where the first downlink transmission beam set includes multiple downlink transmission beams, and each downlink transmission beam corresponds to one Group beam forming weight value; after forming the downlink transmission beam in the first downlink transmission beam set according to the corresponding beamforming value, the first beam training signal is obtained and sent to the terminal.

進一步地，上述步驟802中向終端發送第二波束訓練信號的步驟包括：在第一下行發送波束集合中選取一下行發送波束作為基地台下行發送波束；構造與該基地台下行發送波束相關的第二下行發送波束集合；將該第二下行發送波束集合中的下行發送波束按照預設的波束賦形取值進行賦形後，得到該第二波束訓練信號併發送給終端。 Further, the step of sending a second beam training signal to the terminal in the above step 802 includes: selecting a row transmission beam as a base station downlink transmission beam from the first downlink transmission beam set; and constructing a downlink transmission beam with the base station. A related second downlink transmission beam set; after forming the downlink transmission beam in the second downlink transmission beam set according to a preset beamforming value, the second beam training signal is obtained and sent to the terminal.

可選的，根據該第一推薦波束資訊，在該第一下行發送波束集合中選取一下行發送波束作為該基地台下行發送波束。例如選擇強度最高的波束。 Optionally, according to the first recommended beam information, a row transmission beam is selected as the base station downlink transmission beam from the first downlink transmission beam set. For example, choose the highest intensity beam.

可選的，上述第二下行發送波束集合中的下行發送波束與基地台下行發送波束的空間相關性高於第二預設閾值，或者該第二下行發送波束集合中的下行發送波束與基地台下行發送波束的空間指向的角度差處於第二預設範圍內。 Optionally, the spatial correlation between the downlink transmission beam in the second downlink transmission beam set and the downlink transmission beam of the base station is higher than a second preset threshold, or the downlink transmission beam and the base in the second downlink transmission beam set The angular difference in the spatial orientation of the downlink transmission beam of the station is within a second preset range.

本發明的實施例的波束訓練方法，基地台向終端發送第二波束訓練信號的配置資訊，使得基地台根據該配置資訊確定第二波束訓練信號的下行接收波束，無需終端使用每個下行接收波束對第二波束訓練信號進行接收，加速了終端搜索接收波束的過程，降低了波束訓練所需的時間及複雜度。 In the beam training method according to the embodiment of the present invention, the base station sends configuration information of the second beam training signal to the terminal, so that the base station determines the downlink reception beam of the second beam training signal according to the configuration information, without the terminal using each downlink reception beam Receiving the second beam training signal speeds up the process of the terminal searching for the received beam and reduces the time and complexity required for beam training.

如圖9所示，本發明的之一實施例還提供了一種基地台，包括：第一收發模組91，用於向終端發送第一波束訓練信號，並接收終端根據該第一波束訓練信號發送的第一推薦波束資訊，該第一波束訓練信號為第一下行發送波束集合中的下行發送波束對應的訓練信號；第二收發模組92，用於向終端發送第二波束訓練信號的配置資訊，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；第三收發模組93，用於向該終端發送第二波束訓練信號。 As shown in FIG. 9, an embodiment of the present invention further provides a base station, including: a first transceiver module 91, configured to send a first beam training signal to a terminal, and receive a terminal according to the first beam training signal The first recommended beam information to be sent, where the first beam training signal is a training signal corresponding to a downlink transmission beam in the first downlink transmission beam set; and a second transceiver module 92 is configured to send a second beam training signal to the terminal. Configuration information, which is used to indicate related information of the second beam training signal and the training signal of the base station downlink transmission beam, and the base station downlink transmission beam belongs to the first downlink transmission beam set; a third transceiver mode Group 93 is configured to send a second beam training signal to the terminal.

本發明的之一實施例的基地台，該第一收發模組91包括：第四確定子模組911，用於確定第一下行發送波束集合，該第一下行發送波束集合包括多個下行發送波束，每個下行發送波束對應一組波束賦形權重值；第一發送子模組912，用於將該第一下行發送波束集合中的下行發送波束按照對應的波束賦形取值進行賦形後，得到該第一波束訓練信號併發送給終端。 In a base station according to an embodiment of the present invention, the first transceiver module 91 includes: a fourth determining submodule 911, configured to determine a first downlink transmission beam set, where the first downlink transmission beam set includes multiple A downlink transmission beam, each downlink transmission beam corresponds to a set of beamforming weight values; a first transmission submodule 912 is configured to take a value of the downlink transmission beam in the first downlink transmission beam set according to the corresponding beamforming value After forming, the first beam training signal is obtained and sent to the terminal.

本發明的之一實施例的基地台，該第三收發模組93包括：選取子模組931，用於在第一下行發送波束集合中選取一下行發送波束作為基地台下行發送波束；構造子模組932，用於構造與該基地台下行發送波束相關的第二下行發送波束集合；第二發送子模組933，用於將該第二下行發送波束集合中的下行發送波束按照預設的波束賦形取值進行賦形後，得到該第二波束訓練信號併發送給終端。 In the base station according to an embodiment of the present invention, the third transceiver module 93 includes: a selection sub-module 931, configured to select a row transmission beam as a base station downlink transmission beam from the first downlink transmission beam set; A construction sub-module 932 is configured to construct a second downlink transmission beam set related to the downlink transmission beam of the base station; a second transmission sub-module 933 is configured to perform downlink transmission beams in the second downlink transmission beam set according to After the preset beamforming value is formed, the second beam training signal is obtained and sent to the terminal.

本發明的之一實施例的基地台，該選取子模組931用於根據該第一推薦波束資訊，在該第一下行發送波束集合中選取一下行發送波束作為該基地台下行發送波束。 In the base station according to an embodiment of the present invention, the selection submodule 931 is configured to select a row transmission beam as the base station downlink transmission beam from the first downlink transmission beam set according to the first recommended beam information. .

本發明的之一實施例的基地台，該第二下行發送波束集合中的下行發送波束與基地台下行發送波束的空間相關性高於第二預設閾值，或者該第二下行發送波束集合中的下行發送波束與基地台下行發送波束的空間指向的角度差處於第二預設範圍內。 In the base station according to an embodiment of the present invention, the spatial correlation between the downlink transmission beam in the second downlink transmission beam set and the base station downlink transmission beam is higher than a second preset threshold, or the second downlink transmission beam set The angle difference between the spatial direction of the downlink transmission beam and the downlink transmission beam of the base station is within a second preset range.

本發明的之一實施例的基地台，該配置資訊用於指示該第二波束訓練信號與該基地台下行發送波束的訓練信號的準同位資訊。 In the base station according to an embodiment of the present invention, the configuration information is used to indicate quasi-parity information of the second beam training signal and the base station's downlink transmission beam training signal.

本發明的實施例的基地台，向終端發送第二波束訓練信號的配置資訊，使得基地台根據該配置資訊確定第二波束訓練信號的下行接收波束，無需終端使用每個下行接收波束對第二波束訓練信號進行接收，加速了終端搜索接收波束的過程，降低了波束訓練所需的時間及複雜度。 The base station according to the embodiment of the present invention sends configuration information of the second beam training signal to the terminal, so that the base station determines the downlink receiving beam of the second beam training signal according to the configuration information, without the terminal using each downlink receiving beam to pair the second Receiving the beam training signal speeds up the process of the terminal searching for the received beam and reduces the time and complexity required for beam training.

為了更好的實現上述目的，如圖10所示，本發明的之一實施例還提供了一種基地台，該基地台包括：處理器1000；通過匯流排介面與該處理器1000相連接的記憶體1020，以及通過匯流排介面與處理器1000相連接的收發機1010；該記憶體1020用於儲存該處理器在執行操作時所使用的程式和資料；通過該收發機1010發送資料資訊或者導頻，還通過該收發機1010接收上行控制通道；當處理器1000調用並執行該記憶體1020中所儲存的程式和資料時，實現如下的功能模組：第一收發模組，用於向終端發送第一波束訓練信號，並接收終端根據該第一波束訓練信號發送的第一推薦波束資訊，該第一波束訓練信號為第一下行發送波束集合中的下行發送波束對應的訓練信號；第二收發模組，用於向終端發送第二波束訓練信號的配置資訊，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；第三收發模組，用於向該終端發送第二波束訓練信號。 In order to better achieve the foregoing objective, as shown in FIG. 10, an embodiment of the present invention further provides a base station, which includes: a processor 1000; and a memory connected to the processor 1000 through a bus interface. Body 1020, and a transceiver 1010 connected to the processor 1000 through a bus interface; the memory 1020 is used to store programs and data used by the processor when performing operations; and send data information or guide through the transceiver 1010 Frequency, and also receives the uplink control channel through the transceiver 1010; when the processor 1000 calls and executes the programs and data stored in the memory 1020, the following functional modules are implemented: a first transceiver module, which is used to send to the terminal Sending a first beam training signal, and receiving first recommended beam information sent by the terminal according to the first beam training signal, where the first beam training signal is a training signal corresponding to a downlink transmission beam in a first downlink transmission beam set; Two transceiver modules are used to send configuration information of the second beam training signal to the terminal, and the configuration information is used to indicate the second beam training signal and the basic beam training signal. Audience Information transmission beam line training signals, the base station down transmission beam belonging to the first downlink transmit beam set; third transceiver module for transmitting a second beam training signal to the terminal.

處理器1000用於讀取記憶體1020中的程式，執行下列過程：通過收發機1010向終端發送第一波束訓練信號，並接收終端根據該第一波束訓練信號發送的第一推薦波束資訊，該第一波束訓練信號為第一下行發送波束集合中的下行發送波束對應的訓練信號；通過收發機1010向終端發送第二波束訓練信號的配置資訊，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；向該終端發送第二波束訓練信號。 The processor 1000 is configured to read a program in the memory 1020 and execute the following process: sending a first beam training signal to the terminal through the transceiver 1010, and receiving first recommended beam information sent by the terminal according to the first beam training signal, the The first beam training signal is a training signal corresponding to the downlink transmission beam in the first downlink transmission beam set; the configuration information of the second beam training signal is sent to the terminal through the transceiver 1010, and the configuration information is used to indicate the second beam training Information related to the signal and the training signal of the downlink transmission beam of the base station, the downlink transmission beam of the base station belongs to the first downlink transmission beam set; and the second beam training signal is sent to the terminal.

收發機1010，用於在處理器1000的控制下接收和發送資料。 The transceiver 1010 is configured to receive and send data under the control of the processor 1000.

其中，在圖10中，匯流排架構可以包括任意數量的互聯的匯流排和橋，具體由處理器1000代表的一個或多個處理器和記憶體1020代表的記憶體的各種電路連結在一起。匯流排架構還可以將諸如週邊設備、穩壓器和功率管理電路等之類的各種其他電路連結在一起，這些都是本領域所公知的，因此，本文不再對其進行進一步描述。匯流排介面提供介面。收發機1010可以是多個元件，即包括發送機和收發機，提供用於在傳輸介質上與各種其他裝置通信的單元。處理器1000負責管理匯流排架構和通常的處理，記憶體1020可以儲存處理器1000在執行操作時所使用的資料。 In FIG. 10, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1000 and various circuits of the memory represented by the memory 1020 are connected together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, they will not be further described herein. The bus interface provides an interface. The transceiver 1010 may be a plurality of elements, including a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. The processor 1000 is responsible for managing the bus structure and general processing. The memory 1020 can store data used by the processor 1000 when performing operations.

本發明的之一實施例的基地台，處理器1000用於通過收發機1010向終端發送第一波束訓練信號，並接收終端根據該第一波束訓練信號發送的第一推薦波束資訊；向終端發送第二波束訓練信號的配置資訊，使得基地台根據該配置資訊確定第二波束訓練信號的下行接收波束，無需終端使用每個下行接收波束對第二波束訓練信號進行接收，加速了終端搜索接收波束的過程，降低了波束訓練所需的時間及複雜度。 In the base station according to an embodiment of the present invention, the processor 1000 is configured to send a first beam training signal to the terminal through the transceiver 1010, and receive first recommended beam information sent by the terminal according to the first beam training signal; and send to the terminal. The configuration information of the second beam training signal enables the base station to determine the downlink receiving beam of the second beam training signal according to the configuration information. The terminal does not need to use each downlink receiving beam to receive the second beam training signal, which speeds up the terminal to search for the receiving beam. The process reduces the time and complexity required for beam training.

為了更好的實現上述目的，如圖11所示，本發明的之一實施例還提供一種終端，該終端包括：處理器1100；通過匯流排介面與該處理器1100相連接的記憶體1120，以及通過匯流排介面與處理器1100相連接的收發機1110；該記憶體用於儲存該處理器在執行操作時所使用的程式和資料；通過該收發機1110接收下行控制通道；當處理器1100調用並執行該記憶體1120中所儲存的程式和資料時，實現如下的功能模組：第一確定模組，用於根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束；第二確定模組，用於根據該下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；第三確定模組，用於利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束或者最佳下行接收波束。 In order to better achieve the foregoing objective, as shown in FIG. 11, an embodiment of the present invention further provides a terminal, the terminal includes: a processor 1100; a memory 1120 connected to the processor 1100 through a bus interface, And a transceiver 1110 connected to the processor 1100 through a bus interface; the memory is used to store programs and data used by the processor when performing operations; receiving a downlink control channel through the transceiver 1110; when the processor 1100 When calling and executing the programs and data stored in the memory 1120, the following function modules are implemented: a first determining module for determining a first downlink transmission beam set according to a first beam training signal sent by a base station A downlink receiving beam corresponding to the downlink transmitting beam in the middle; a second determining module configured to determine the second beam training according to the correspondence between the downlink transmitting beam and the downlink receiving beam and the configuration information of the second beam training signal sent by the base station The downlink receive beam of the signal, the configuration information is used to indicate the training signal of the second beam and the training signal of the downlink transmit beam of the base station Related information, the base station downlink transmission beam belongs to the first downlink transmission beam set; a third determination module is configured to receive the second beam training signal by using the downlink reception beam of the second beam training signal, and determine Best downlink transmit beam or best downlink receive beam.

處理器1100用於讀取記憶體1120中的程式，執行下列過程：根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束；根據該下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，該配置資訊用於指示該第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；通過收發機1110利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束或者最佳下行接收波束。 The processor 1100 is configured to read the program in the memory 1120 and execute the following process: determining the downlink receiving beam corresponding to the downlink transmitting beam in the first downlink transmitting beam set according to the first beam training signal sent by the base station; The correspondence between the downlink transmit beam and the downlink receive beam and the configuration information of the second beam training signal sent by the base station determine the downlink receive beam of the second beam training signal, and the configuration information is used to indicate the second beam training signal and the base station Relevant information about the training signal of the downlink transmission beam, the base station's downlink transmission beam belongs to the first downlink transmission beam set; the transceiver 1110 receives the second beam training signal by using the downlink reception beam of the second beam training signal And determine the best downlink transmit beam or best downlink receive beam.

收發機1110，用於在處理器1100的控制下接收和發送資料。 The transceiver 1110 is configured to receive and send data under the control of the processor 1100.

其中，在圖11中，匯流排架構可以包括任意數量的互聯的匯流排和橋，具體由處理器1100代表的一個或多個處理器和記憶體1120代表的記憶體的各種電路連結在一起。匯流排架構還可以將諸如週邊設備、穩壓器和功率管理電路等之類的各種其他電路連結在一起，這些都是本領域所公知的，因此，本文不再對其進行進一步描述。匯流排介面提供介面。收發機1110可以是多個元件，即包括發送機和接收機，提供用於在傳輸介質上與各種其他裝置通信的單元。針對不同的使用者設備，使用者介面1130還可以是能夠外接內接需要設備的介面，連接的設備包括但不限於小鍵盤、顯示器、揚聲器、麥克風、操縱桿等。 Among them, in FIG. 11, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1100 and various circuits of the memory represented by the memory 1120 are connected together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, they will not be further described herein. The bus interface provides an interface. The transceiver 1110 may be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium. For different user devices, the user interface 1130 may also be an interface capable of externally connecting and connecting the required devices. The connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.

處理器1100負責管理匯流排架構和通常的處理，記憶體1120可以儲存處理器1100在執行操作時所使用的資料。 The processor 1100 is responsible for managing the bus structure and general processing. The memory 1120 can store data used by the processor 1100 when performing operations.

本發明的之一實施例的終端，處理器1100用於根據基地台發送的第一波束訓練信號，確定第一下行發送波束集合中的下行發送波束對應的下行接收波束；根據下行發送波束與下行接收波束的對應關係以及基地台發送的第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，配置資訊用於指示第二波束訓練信號與基地台下行發送波束的訓練信號的相關資訊，基地台下行發送波束屬於該第一下行發送波束集合；利用第二波束訓練信號的下行接收波束接收第二波束訓練信號，並確定最佳下行接收波束或者最佳下行發送波束。本發明的實施例中根據第二波束訓練信號的配置資訊，確定第二波束訓練信號的下行接收波束，無需終端使用每個下行接收波束對第二波束訓練信號進行接收，加速了終端搜索接收波束的過程，降低了波束訓練所需的時間及複雜度。 In a terminal according to an embodiment of the present invention, the processor 1100 is configured to determine a downlink receiving beam corresponding to a downlink transmitting beam in a first downlink transmitting beam set according to a first beam training signal sent by a base station; Correspondence between the downlink receiving beam and the configuration information of the second beam training signal sent by the base station to determine the downlink receiving beam of the second beam training signal, and the configuration information is used to instruct the training of the second beam training signal and the downlink transmission beam of the base station For the relevant information of the signal, the downlink transmission beam of the base station belongs to the first downlink transmission beam set; the downlink reception beam of the second beam training signal is used to receive the second beam training signal, and the best downlink reception beam or the best downlink transmission is determined Beam. In the embodiment of the present invention, the downlink receiving beam of the second beam training signal is determined according to the configuration information of the second beam training signal. The terminal does not need to use each downlink receiving beam to receive the second beam training signal, which speeds up the terminal to search for the receiving beam. The process reduces the time and complexity required for beam training.

本發明是參照根據本發明的之一實施例的方法、設備(系統)、和電腦程式產品的流程圖和/或方塊圖來描述的。應理解可由電腦程式指令實現流程圖和/或方塊圖中的每一流程和/或方塊、以及流程圖和/或方塊圖中的流程和/或方塊的結合。可提供這些電腦程式指令到通用電腦、專用電腦、嵌入式處理機或其他可程式設計資料處理設備的處理器以產生一個機器，使得通過電腦或其他可程式設計資料處理設備的處理器執行的指令產生用於實現在流程圖一個流程或多個流程和/或方塊圖一個方塊或多個方塊中指定的功能的裝置。 The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to an embodiment of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, and a combination of the flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to generate a machine for instructions executed by the processor of the computer or other programmable data processing device Generate means for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.

這些電腦程式指令也可儲存在能引導電腦或其他可程式設計資料處理設備以特定方式工作的電腦可讀記憶體中，使得儲存在該電腦可讀記憶體中的指令產生包括指令裝置的製造品，該指令裝置實現在流程圖一個流程或多個流程和/或方塊圖一個方塊或多個方塊中指定的功能。 These computer program instructions may also be stored in computer readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory generate a manufactured article including a command device , The instruction device implements the functions specified in a flowchart or a plurality of processes and / or a block or a block of the block diagram.

這些電腦程式指令也可裝載到電腦或其他可程式設計資料處理設備上，使得在電腦或其他可程式設計設備上執行一系列操作步驟以產生電腦實現的處理，從而在電腦或其他可程式設計設備上執行的指令提供用於實現在流程圖一個流程或多個流程和/或方塊圖一個方塊或多個方塊其中指定的功能的步驟。 These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operating steps can be performed on the computer or other programmable equipment to generate computer-implemented processing, and thus on the computer or other programmable equipment The instructions executed on the steps provide steps for implementing the functions specified in one or more of the flowcharts and / or one or more of the blocks in the block diagram.

以上該僅為本發明的之一實施例而已，並不用以限制本發明，凡在本發明的精神和原則之內，所作的任何修改、等同替換、改進等，均應包含在本發明的保護範圍之內。 The above is only one embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range.

Claims

一種波束訓練方法，應用於一終端，包括：根據一基地台發送的一第一波束訓練信號，確定一第一下行發送波束集合中的下行發送波束對應的下行接收波束；根據所述下行發送波束與下行接收波束的對應關係以及該基地台發送的一第二波束訓練信號的一配置資訊，確定該第二波束訓練信號的下行接收波束，該配置資訊用於指示該第二波束訓練信號與一基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束或者最佳下行接收波束。 A beam training method applied to a terminal includes: determining a downlink reception beam corresponding to a downlink transmission beam in a first downlink transmission beam set according to a first beam training signal sent by a base station; and according to the downlink transmission The correspondence between the beam and the downlink receiving beam and a configuration information of a second beam training signal sent by the base station determine the downlink receiving beam of the second beam training signal, and the configuration information is used to indicate the second beam training signal and Information about a training signal of a base station downlink transmission beam, the base station downlink transmission beam belongs to the first downlink transmission beam set; using the downlink reception beam of the second beam training signal to receive the second beam training signal, And determine the best downlink transmit beam or the best downlink receive beam.

如請求項1所述的波束訓練方法，其中，根據該下行發送波束與下行接收波束的對應關係以及該基地台發送的該第二波束訓練信號的該配置資訊，確定該第二波束訓練信號的下行接收波束的步驟包括：根據該基地台發送的該第二波束訓練信號的該配置資訊，確定與該第二波束訓練信號相關的該基地台下行發送波束；根據該下行發送波束與下行接收波束的對應關係，確定與該基地台下行發送波束對應的一第一下行接收波束；根據該第一下行接收波束，確定該第二波束訓練信號的下行接收波束。 The beam training method according to claim 1, wherein the second beam training signal is determined based on the correspondence between the downlink transmission beam and the downlink reception beam and the configuration information of the second beam training signal sent by the base station. The step of receiving a downlink beam includes: determining the downlink transmission beam of the base station related to the second beam training signal according to the configuration information of the second beam training signal sent by the base station; and according to the downlink transmission beam and downlink reception The corresponding relationship of the beams determines a first downlink receiving beam corresponding to the downlink transmitting beam of the base station; and determines a downlink receiving beam of the second beam training signal according to the first downlink receiving beam.

如請求項2所述的波束訓練方法，其中，所述根據該第一下行接收波束，確定該第二波束訓練信號的下行接收波束的步驟包括：將該第一下行接收波束，作為該第二波束訓練信號的下行接收波束；或者構造與該第一下行接收波束相關的下行接收波束集合，並將該下行接收波束集合作為該第二波束訓練信號的下行接收波束。 The beam training method according to claim 2, wherein the step of determining a downlink reception beam of the second beam training signal according to the first downlink reception beam includes: using the first downlink reception beam as the Or a downlink receiving beam set related to the first downlink receiving beam, and using the downlink receiving beam set as a downlink receiving beam of the second beam training signal.

如請求項3所述的波束訓練方法，其中，該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間相關性大於第一預設閾值或者該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間指向的角度差處於第一預設範圍內。 The beam training method according to claim 3, wherein a spatial correlation between a downlink reception beam in the downlink reception beam set and the first downlink reception beam is greater than a first preset threshold or a downlink in the downlink reception beam set The angle difference between the spatial orientation of the receiving beam and the first downlink receiving beam is within a first preset range.

如請求項1所述的波束訓練方法，其中，該配置資訊用於指示該第二波束訓練信號與該基地台下行發送波束的訓練信號的準同位資訊。 The beam training method according to claim 1, wherein the configuration information is used to indicate quasi-parity information of the second beam training signal and a training signal of a downlink transmission beam of the base station.

如請求項1所述的波束訓練方法，其中，利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行接收波束的步驟包括：在該第二波束訓練信號的下行接收波束中，選擇接收信號功率最強的下行接收波束為最佳下行接收波束。 The beam training method according to claim 1, wherein the step of receiving the second beam training signal by using the downlink receiving beam of the second beam training signal and determining an optimal downlink receiving beam includes: training on the second beam training signal Among the downlink receiving beams, the downlink receiving beam with the strongest received signal power is selected as the best downlink receiving beam.

如請求項1所述的波束訓練方法，其中，利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束的步驟包括：在該第二波束訓練信號的下行發送波束中，選擇接收信號功率最強的下行接收波束為最佳下行發送波束。 The beam training method according to claim 1, wherein the step of using the downlink receiving beam of the second beam training signal to receive the second beam training signal and determining an optimal downlink transmission beam includes: training on the second beam training signal Among the downlink transmit beams, the downlink receive beam with the strongest received signal power is selected as the best downlink transmit beam.

一種終端，包括一處理器、一收發機和一記憶體；其中，該處理器用於讀取該記憶體中的程式，執行下列過程：根據一基地台發送的一第一波束訓練信號，確定一第一下行發送波束集合中的下行發送波束對應的下行接收波束；根據所述下行發送波束與下行接收波束的對應關係以及該基地台發送的一第二波束訓練信號的一配置資訊，確定該第二波束訓練信號的下行接收波束，該配置資訊用於指示該第二波束訓練信號與一基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；利用該第二波束訓練信號的下行接收波束接收該第二波束訓練信號，並確定最佳下行發送波束或者最佳下行接收波束；該收發機用於接收和發送資料；該記憶體用於保存該處理器執行操作時所使用的資料。 A terminal includes a processor, a transceiver, and a memory; wherein the processor is used to read a program in the memory and execute the following process: determining a first beam training signal sent by a base station A downlink receiving beam corresponding to a downlink transmitting beam in the first downlink transmitting beam set; determining the corresponding relationship between the downlink transmitting beam and the downlink receiving beam and configuration information of a second beam training signal sent by the base station; The downlink reception beam of the second beam training signal, the configuration information is used to indicate the related information of the second beam training signal and the training signal of a base station downlink transmission beam, and the base station downlink transmission beam belongs to the first downlink Transmit beam set; use the second receiving beam of the second beam training signal to receive the second beam training signal, and determine the best downlink transmitting beam or the best downlink receiving beam; the transceiver is used for receiving and transmitting data; the memory Used to save the data used by the processor to perform operations.

如請求項8所述的終端，其中，該處理器用於讀取該記憶體中的程式，進一步執行下列過程：根據該基地台發送的該第二波束訓練信號的該配置資訊，確定與該第二波束訓練信號相關的該基地台下行發送波束；根據該下行發送波束與下行接收波束的對應關係，確定與該基地台下行發送波束對應的該第一下行接收波束；該第一下行接收波束，確定該第二波束訓練信號的下行接收波束。 The terminal according to claim 8, wherein the processor is configured to read a program in the memory, and further execute the following process: determining the connection with the first beam training signal according to the configuration information of the second beam training signal sent by the base station. The base station downlink transmission beam related to the two beam training signal; determining the first downlink reception beam corresponding to the base station downlink transmission beam according to the correspondence between the downlink transmission beam and the downlink reception beam; the first down Receiving beams to determine the downlink receiving beams of the second beam training signal.

如請求項9所述的終端，其中，該處理器用於讀取該記憶體中的程式，進一步執行下列過程：將該第一下行接收波束，作為該第二波束訓練信號的下行接收波束；或者構造與該第一下行接收波束相關的下行接收波束集合，並將該下行接收波束集合作為該第二波束訓練信號的下行接收波束。 The terminal according to claim 9, wherein the processor is configured to read a program in the memory and further execute the following process: using the first downlink receiving beam as a downlink receiving beam of the second beam training signal; Alternatively, a downlink receiving beam set related to the first downlink receiving beam is constructed, and the downlink receiving beam set is used as a downlink receiving beam of the second beam training signal.

如請求項10所述的終端，其中，該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間相關性大於第一預設閾值或者該下行接收波束集合中的下行接收波束與該第一下行接收波束的空間指向的角度差處於第一預設範圍內。 The terminal according to claim 10, wherein a spatial correlation between a downlink reception beam in the downlink reception beam set and the first downlink reception beam is greater than a first preset threshold or a downlink reception beam in the downlink reception beam set The angular difference from the spatial orientation of the first downlink receiving beam is within a first preset range.

如請求項8所述的終端，其中，該配置資訊用於指示該第二波束訓練信號與該基地台下行發送波束的訓練信號的準同位資訊。 The terminal according to claim 8, wherein the configuration information is used to indicate quasi-parity information of the second beam training signal and a training signal of a downlink transmission beam of the base station.

如請求項8所述的終端，其中，該處理器用於讀取該記憶體中的程式，進一步執行下列過程：在該第二波束訓練信號的下行接收波束中，選擇接收信號功率最強的下行接收波束為最佳下行接收波束。 The terminal according to claim 8, wherein the processor is configured to read the program in the memory, and further execute the following process: in the downlink receiving beam of the second beam training signal, selecting the downlink receiving with the strongest received signal power The beam is the best downlink receive beam.

如請求項8所述的終端，其中，該處理器用於讀取該記憶體中的程式，進一步執行下列過程：在該第二波束訓練信號的下行發送波束中，選擇接收信號功率最強的下行接收波束為最佳下行發送波束。 The terminal according to claim 8, wherein the processor is configured to read the program in the memory, and further execute the following process: in the downlink transmission beam of the second beam training signal, selecting a downlink reception with the strongest received signal power The beam is the best downlink transmission beam.

一種波束訓練方法，應用於一基地台，包括：向一終端發送一第一波束訓練信號，並接收該終端根據該第一波束訓練信號發送的一第一推薦波束資訊，該第一波束訓練信號為一第一下行發送波束集合中的下行發送波束對應的訓練信號；向終端發送一第二波束訓練信號的一配置資訊，該配置資訊用於指示該第二波束訓練信號與一基地台下行發送波束的訓練信號的相關資訊，該基地台下行發送波束屬於該第一下行發送波束集合；向該終端發送該第二波束訓練信號。 A beam training method applied to a base station includes: sending a first beam training signal to a terminal, and receiving a first recommended beam information sent by the terminal according to the first beam training signal, the first beam training signal Is a training signal corresponding to a downlink transmission beam in a first downlink transmission beam set; sending a configuration information of a second beam training signal to the terminal, the configuration information is used to indicate that the second beam training signal is under a base station Related to the training signal of the transmission beam, the downlink transmission beam of the base station belongs to the first downlink transmission beam set; and the second beam training signal is sent to the terminal.

如請求項15所述的波束訓練方法，其中，向該終端發送該第一波束訓練信號的步驟包括：確定該第一下行發送波束集合，該第一下行發送波束集合包括多個下行發送波束，每個下行發送波束對應一組波束賦形權重值；將該第一下行發送波束集合中的下行發送波束按照對應的波束賦形取值進行賦形後，得到該第一波束訓練信號併發送給該終端。 The beam training method according to claim 15, wherein the step of sending the first beam training signal to the terminal includes: determining the first downlink transmission beam set, where the first downlink transmission beam set includes multiple downlink transmissions Beam, each downlink transmission beam corresponds to a set of beamforming weighting values; the downlink transmission beam in the first downlink transmission beam set is shaped according to the corresponding beamforming value to obtain the first beam training signal And send it to the terminal.

如請求項15所述的波束訓練方法，其中，向該終端發送該第二波束訓練信號的步驟包括：在該第一下行發送波束集合中選取一下行發送波束作為該基地台下行發送波束；構造與該基地台下行發送波束相關的一第二下行發送波束集合；將該第二下行發送波束集合中的下行發送波束按照預設的波束賦形取值進行賦形後，得到該第二波束訓練信號併發送給該終端。 The beam training method according to claim 15, wherein the step of sending the second beam training signal to the terminal includes: selecting a next-row transmission beam as the base station downlink transmission beam from the first downlink transmission beam set. Constructing a second downlink transmission beam set related to the downlink transmission beam of the base station; after forming the downlink transmission beam in the second downlink transmission beam set according to a preset beamforming value, the first A two-beam training signal is sent to the terminal.

如請求項17所述的波束訓練方法，其中，在該第一下行發送波束集合中選取一下行發送波束作為該基地台下行發送波束的步驟包括：根據該第一推薦波束資訊，在該第一下行發送波束集合中選取一下行發送波束作為該基地台下行發送波束。 The beam training method according to claim 17, wherein the step of selecting a row transmission beam as the base station downlink transmission beam in the first downlink transmission beam set includes: according to the first recommended beam information, in the In the first set of downlink transmission beams, the next row transmission beam is selected as the base station's downlink transmission beam.

如請求項17所述的波束訓練方法，其中，該第二下行發送波束集合中的下行發送波束與該基地台下行發送波束的空間相關性高於第二預設閾值，或者該第二下行發送波束集合中的下行發送波束與該基地台下行發送波束的空間指向的角度差處於第二預設範圍內。 The beam training method according to claim 17, wherein a spatial correlation between a downlink transmission beam in the second downlink transmission beam set and a downlink transmission beam of the base station is higher than a second preset threshold, or the second downlink The angle difference between the spatial orientation of the downlink transmission beam in the transmission beam set and the downlink transmission beam of the base station is within a second preset range.

如請求項15所述的波束訓練方法，其中，該配置資訊用於指示該第二波束訓練信號與該基地台下行發送波束的訓練信號的準同位資訊。 The beam training method according to claim 15, wherein the configuration information is used to indicate quasi-parity information of the second beam training signal and a training signal of a downlink transmission beam of the base station.