CN108156662B - Communication method, base station and terminal equipment - Google Patents
Communication method, base station and terminal equipmentDownload PDFInfo
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- CN108156662B CN108156662BCN201611096641.7ACN201611096641ACN108156662BCN 108156662 BCN108156662 BCN 108156662BCN 201611096641 ACN201611096641 ACN 201611096641ACN 108156662 BCN108156662 BCN 108156662B
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明实施例涉及通信技术，尤其涉及一种通信方法、基站和终端设备。Embodiments of the present invention relate to communication technologies, and in particular, to a communication method, a base station, and a terminal device.
背景技术Background technique
随着移动通信的数据传输速率、通信质量等要求的不断提升，现有的用于移动通信的频段已经变得非常拥挤。然而，在6-300GHz的毫米波频段上，仍然拥有大量的频谱资源还未被分配使用。把毫米波频段引入到移动通信中来，充分利用毫米波频段的大带宽资源，是下一代(5-Generation，简称5G)移动通信技术的重要研究方向之一。With the continuous improvement of data transmission rate, communication quality and other requirements of mobile communication, the existing frequency band used for mobile communication has become very crowded. However, in the millimeter wave frequency band of 6-300GHz, there is still a large amount of spectrum resources that have not been allocated and used. Introducing the millimeter wave frequency band into mobile communication and making full use of the large bandwidth resources of the millimeter wave frequency band is one of the important research directions of the next generation (5-Generation, 5G) mobile communication technology.
但是，以毫米波频段为代表的高频段具有路损较大、穿透障碍物能力弱以及在某些频点雨衰严重等特点，严重的制约了高频段的应用。同时，高频段由于其波长短，易实现大规模阵列天线，可以通过波束成形(beam-forming，简称BF)技术带来大的定向天线增益，从而有效的补偿其高路损，这也为高频段在室外场景的中长距离传输的应用提供了可能性。如何将高频段应用在移动通信系统中是目前急需解决的问题。However, the high-frequency band represented by the millimeter-wave band has the characteristics of large path loss, weak ability to penetrate obstacles, and severe rain attenuation at certain frequencies, which seriously restricts the application of high-frequency bands. At the same time, due to its short wavelength in high frequency band, it is easy to realize large-scale array antenna, which can bring large directional antenna gain through beam-forming (BF) technology, thereby effectively compensating for its high path loss, which is also high The application of frequency bands in medium and long distance transmission in outdoor scenarios provides the possibility. How to apply the high frequency band in the mobile communication system is an urgent problem to be solved at present.
发明内容SUMMARY OF THE INVENTION
本发明实施例提供一种通信方法、基站和终端设备，通过所述通信方法，可以在低频频段的信令交互确定将在高频频段传输数据所使用的发送波束和接收波束，以实现高频数据的传输。Embodiments of the present invention provide a communication method, a base station, and a terminal device. Through the communication method, the signaling interaction in the low frequency frequency band can determine the transmitting beam and the receiving beam to be used for data transmission in the high frequency frequency band, so as to realize the high frequency transmission. transmission of data.
本发明实施例第一方面提供一种通信方法，包括：A first aspect of the embodiments of the present invention provides a communication method, including:
基站通过低频频段向终端设备发送下行参考信号DLRS和第一下行控制信息DCI，所述第一DCI包括上行参考信号ULRS的指示信息，其中，所述DLRS用于所述终端设备确定在高频频段上接收下行数据使用的接收波束；The base station sends the downlink reference signal DLRS and the first downlink control information DCI to the terminal device through the low-frequency frequency band, where the first DCI includes the indication information of the uplink reference signal ULRS, wherein the DLRS is used by the terminal device to determine the high frequency The receiving beam used to receive downlink data on the frequency band;
所述基站接收所述终端设备通过所述低频频段发送的ULRS；receiving, by the base station, the ULRS sent by the terminal device through the low-frequency frequency band;
所述基站根据所述ULRS确定在高频频段上发送下行数据使用的发送波束；determining, by the base station according to the ULRS, a transmission beam used for sending downlink data in the high-frequency frequency band;
所述基站使用所述发送波束在所述高频频段上向所述终端设备发送下行数据。The base station transmits downlink data to the terminal device on the high-frequency frequency band by using the transmit beam.
在本发明第一方面的一种可能实现方式中，所述方法还包括：所述基站通过所述低频频段向所述终端设备发送第二DCI，所述第二DCI用于指示所述基站为所述终端设备分配的高频资源。本发明实施例通过低频频段辅助高频频段进行波束训练，以实现高频数据的传输。In a possible implementation manner of the first aspect of the present invention, the method further includes: the base station sends a second DCI to the terminal device through the low-frequency frequency band, where the second DCI is used to indicate that the base station is High-frequency resources allocated by the terminal equipment. In the embodiment of the present invention, beam training is performed by assisting the high frequency frequency band in the low frequency frequency band, so as to realize the transmission of the high frequency data.
在本发明第一方面的一种可能实现方式中，所述基站根据所述ULRS确定在高频频段上发送下行数据使用的发送波束，具体包括：In a possible implementation manner of the first aspect of the present invention, the base station determines, according to the ULRS, a sending beam used for sending downlink data on a high-frequency frequency band, which specifically includes:
所述基站根据所述ULRS确定到达角度AoA；The base station determines the angle of arrival AoA according to the ULRS;
所述基站根据所述AoA，确定发送下行数据使用的所述发送波束。The base station determines, according to the AoA, the sending beam used for sending downlink data.
在本发明第一方面的一种可能实现方式中，所述方法还包括：In a possible implementation manner of the first aspect of the present invention, the method further includes:
所述基站通过所述低频频段接收所述终端设备上报的能力指示信息，所述能力指示信息包括所述终端设备在所述高频频段上的接收波束的个数信息和/或所述终端设备在所述高频频段上的射频链路的个数信息。本实现方式通过获知终端设备的能力信息，与现有技术相比，能够更合理地为终端设备分配资源。The base station receives capability indication information reported by the terminal equipment through the low frequency frequency band, where the capability indication information includes information on the number of receiving beams of the terminal equipment in the high frequency frequency band and/or the terminal equipment Information on the number of radio frequency links in the high frequency band. Compared with the prior art, the present implementation can allocate resources to the terminal device more reasonably by learning the capability information of the terminal device.
在本发明第一方面的一种可能实现方式中，所述方法还包括：所述基站通过所述低频频段向所述终端设备发送第三DCI，所述第三DCI包括一个或多个以下信息：基站发送波束跟踪信号BTRS的高频资源信息、基站射频链路个数或波束个数信息。In a possible implementation manner of the first aspect of the present invention, the method further includes: the base station sends a third DCI to the terminal device through the low-frequency frequency band, where the third DCI includes one or more of the following information : High-frequency resource information of the beam tracking signal BTRS sent by the base station, information on the number of radio frequency links of the base station or the number of beams.
在本发明第一方面的一种可能实现方式中，所述基站根据所述ULRS确定在高频频段上发送下行数据使用的发送波束，包括：In a possible implementation manner of the first aspect of the present invention, the base station determines, according to the ULRS, a sending beam used for sending downlink data on a high-frequency frequency band, including:
所述基站使用所述第三DCI指示的高频资源向所述终端设备发送所述BTRS；sending, by the base station, the BTRS to the terminal device by using the high-frequency resource indicated by the third DCI;
所述基站通过所述低频频段接收所述终端设备发送的所述基站在所述高频频段上发送下行数据使用的发送波束。The base station receives, through the low frequency frequency band, a transmission beam sent by the terminal device and used by the base station to transmit downlink data on the high frequency frequency band.
在本发明第一方面的一种可能实现方式中，所述低频频段为一个专用分量载波。In a possible implementation manner of the first aspect of the present invention, the low frequency band is a dedicated component carrier.
在本发明第一方面的一种可能实现方式中，所述低频频段为分量载波的一个子带。In a possible implementation manner of the first aspect of the present invention, the low frequency frequency band is a subband of a component carrier.
在本发明第一方面的一种可能实现方式中，所述高频资源包括时间资源和频率资源。In a possible implementation manner of the first aspect of the present invention, the high-frequency resources include time resources and frequency resources.
本发明实施例第二方面提供一种通信方法，包括：A second aspect of the embodiments of the present invention provides a communication method, including:
终端设备通过低频频段接收基站发送的下行参考信号DLRS和第一下行控制信息DCI，所述第一DCI用于指示所述终端设备发送上行参考信号ULRS；The terminal device receives the downlink reference signal DLRS and the first downlink control information DCI sent by the base station through the low frequency frequency band, where the first DCI is used to instruct the terminal device to send the uplink reference signal ULRS;
所述终端设备根据所述ULRS的指示信息，通过所述低频频段向所述基站发送ULRS；sending, by the terminal device, the ULRS to the base station through the low-frequency frequency band according to the indication information of the ULRS;
所述终端设备根据所述DLRS确定在高频频段上接收下行数据使用的接收波束；The terminal device determines, according to the DLRS, a receive beam used for receiving downlink data on the high-frequency frequency band;
所述终端设备使用所述接收波束在所述高频频段上接收所述基站发送的下行数据。The terminal device uses the receiving beam to receive downlink data sent by the base station on the high-frequency frequency band.
在本发明第二方面的一种可能实现方式中，所述方法还包括：所述终端设备通过所述低频频段接收所述基站发送的第二DCI，所述第二DCI用于指示所述基站为所述终端设备分配的高频资源。In a possible implementation manner of the second aspect of the present invention, the method further includes: the terminal device receives a second DCI sent by the base station through the low-frequency frequency band, where the second DCI is used to indicate the base station High-frequency resources allocated to the terminal device.
在本发明第二方面的一种可能实现方式中，所述终端设备根据所述DLRS确定在高频频段上接收下行数据使用的接收波束，具体包括：In a possible implementation manner of the second aspect of the present invention, the terminal device determines, according to the DLRS, a receive beam used for receiving downlink data on a high-frequency frequency band, specifically including:
所述终端设备根据所述DLRS确定达到角度AoA；The terminal device determines the angle of arrival AoA according to the DLRS;
所述终端设备根据所述AoA，确定接收下行数据使用的所述接收波束。The terminal device determines, according to the AoA, the receiving beam used for receiving downlink data.
在本发明第二方面的一种可能实现方式中，所述方法还包括：所述终端设备在所述低频频段向所述基站上报能力指示信息，所述能力指示信息包括所述终端设备在所述高频频段上的接收波束的个数信息和/或所述终端设备在所述高频频段上的射频链路的个数信息中的至少一个。In a possible implementation manner of the second aspect of the present invention, the method further includes: the terminal device reports capability indication information to the base station in the low-frequency frequency band, where the capability indication information includes at least one of information on the number of receive beams on the high-frequency band and/or information on the number of radio frequency links on the high-frequency band of the terminal device.
在本发明第二方面的一种可能实现方式中，所述方法还包括：所述终端设备通过所述低频频段接收所述基站发送的第三DCI，所述第三DCI包括一个或多个以下信息：基站发送波束跟踪信号BTRS的高频资源信息、基站射频链路个数或波束个数信息。In a possible implementation manner of the second aspect of the present invention, the method further includes: the terminal device receives a third DCI sent by the base station through the low frequency frequency band, where the third DCI includes one or more of the following Information: the high-frequency resource information of the beam tracking signal BTRS sent by the base station, the number of radio frequency links or the number of beams of the base station.
在本发明第二方面的一种可能实现方式中，所述方法还包括：In a possible implementation manner of the second aspect of the present invention, the method further includes:
所述终端设备使用所述第三DCI指示的高频资源接收所述终端设备发送的所述BTRS；receiving, by the terminal device, the BTRS sent by the terminal device by using the high-frequency resource indicated by the third DCI;
所述终端设备根据所述DLRS确定在高频频段上接收下行数据使用的接收波束，包括：The terminal device determines, according to the DLRS, a receiving beam used for receiving downlink data on the high-frequency frequency band, including:
所述终端设备根据所述BTRS确定所述基站在所述高频频段上发送下行数据使用的发送波束和所述终端设备在所述高频频段上接收下行数据使用的接收波束；The terminal device determines, according to the BTRS, a transmit beam used by the base station to send downlink data on the high-frequency frequency band and a receive beam used by the terminal device to receive downlink data on the high-frequency frequency band;
所述终端设备通过所述低频频段将所述发送波束的信息发送给所述基站。The terminal device sends the information of the transmission beam to the base station through the low frequency frequency band.
在本发明第二方面的一种可能实现方式中，所述高频资源包括时间资源和频率资源。In a possible implementation manner of the second aspect of the present invention, the high-frequency resources include time resources and frequency resources.
本发明实施例第三方面提供一种基站，包括：A third aspect of the embodiments of the present invention provides a base station, including:
发送模块，用于通过低频频段向终端设备发送下行参考信号DLRS和第一下行控制信息DCI，所述第一DCI用于指示所述终端设备发送上行参考信号ULRS；所述DLRS用于所述终端设备确定在高频频段上接收下行数据使用的接收波束；a sending module, configured to send a downlink reference signal DLRS and first downlink control information DCI to a terminal device through a low frequency frequency band, where the first DCI is used to instruct the terminal device to send an uplink reference signal ULRS; the DLRS is used for the The terminal equipment determines the receiving beam used to receive downlink data on the high-frequency frequency band;
接收模块，用于接收所述终端设备通过所述低频频段发送的ULRS；a receiving module, configured to receive the ULRS sent by the terminal device through the low-frequency frequency band;
处理模块，用于根据所述ULRS确定在高频频段上发送下行数据使用的发送波束；a processing module, configured to determine, according to the ULRS, a sending beam used for sending downlink data on the high-frequency frequency band;
所述发送模块，还用于使用所述发送波束在所述高频频段上向所述终端设备发送下行数据。The sending module is further configured to use the sending beam to send downlink data to the terminal device on the high-frequency frequency band.
在本发明第三方面的一种可能实现方式中，所述发送模块还用于：通过所述低频频段向所述终端设备发送第二DCI，所述第二DCI用于指示所述基站为所述终端设备分配的高频资源。In a possible implementation manner of the third aspect of the present invention, the sending module is further configured to: send a second DCI to the terminal device through the low frequency frequency band, where the second DCI is used to indicate that the base station is the the high-frequency resources allocated by the terminal equipment.
在本发明第三方面的一种可能实现方式中，所述处理模块具体用于：In a possible implementation manner of the third aspect of the present invention, the processing module is specifically configured to:
根据所述ULRS确定到达角度AoA；determining the angle of arrival AoA according to the ULRS;
根据所述AoA，确定发送下行数据使用的所述发送波束。According to the AoA, the transmit beam used for transmitting downlink data is determined.
在本发明第三方面的一种可能实现方式中，所述接收模块还用于：通过所述低频频段接收所述终端设备上报的能力指示信息，所述能力指示信息包括所述终端设备在所述高频频段上的接收波束的个数信息和所述终端设备在所述高频频段上的射频链路的个数信息中的至少一个。In a possible implementation manner of the third aspect of the present invention, the receiving module is further configured to: receive capability indication information reported by the terminal equipment through the low-frequency frequency band, where the capability indication information includes at least one of information on the number of receive beams on the high-frequency band and information on the number of radio frequency links on the high-frequency band of the terminal device.
在本发明第三方面的一种可能实现方式中，所述发送模块还用于：通过所述低频频段向所述终端设备发送第三DCI，所述第三DCI包括一个或多个以下信息：基站发送波束跟踪信号BTRS的高频资源信息、基站射频链路个数或波束个数信息。In a possible implementation manner of the third aspect of the present invention, the sending module is further configured to: send a third DCI to the terminal device through the low-frequency frequency band, where the third DCI includes one or more of the following information: The base station sends high-frequency resource information of the beam tracking signal BTRS, information on the number of radio frequency links of the base station or the number of beams.
在本发明第三方面的一种可能实现方式中，所述发送模块具体用于：In a possible implementation manner of the third aspect of the present invention, the sending module is specifically configured to:
通过所述第三DCI指示的高频资源向所述终端设备发送所述BTRS。The BTRS is sent to the terminal device through the high frequency resource indicated by the third DCI.
本发明实施例第四方面提供一种终端设备，包括：A fourth aspect of the embodiments of the present invention provides a terminal device, including:
接收模块，用于通过低频频段接收基站发送的下行参考信号DLRS和第一下行控制信息DCI，所述第一DCI包括上行参考信号ULRS的指示信息；a receiving module, configured to receive the downlink reference signal DLRS and the first downlink control information DCI sent by the base station through the low frequency frequency band, where the first DCI includes the indication information of the uplink reference signal ULRS;
发送模块，用于根据所述ULRS的指示信息，通过所述低频频段向所述基站发送ULRS；a sending module, configured to send the ULRS to the base station through the low frequency frequency band according to the indication information of the ULRS;
处理模块，用于根据所述DLRS确定在高频频段上接收下行数据使用的接收波束；a processing module, configured to determine, according to the DLRS, a receiving beam used for receiving downlink data on the high-frequency frequency band;
所述接收模块，还用于使用所述接收波束在所述高频频段上接收所述基站发送的下行数据。The receiving module is further configured to use the receiving beam to receive downlink data sent by the base station on the high-frequency frequency band.
在本发明第四方面的一种可能实现方式中，所述接收模块还用于：通过所述低频频段接收所述基站发送的第二DCI，所述第二DCI用于指示所述基站为所述终端设备分配的高频资源。In a possible implementation manner of the fourth aspect of the present invention, the receiving module is further configured to: receive a second DCI sent by the base station through the low-frequency frequency band, where the second DCI is used to indicate that the base station is the the high-frequency resources allocated by the terminal equipment.
在本发明第四方面的一种可能实现方式中，所述处理模块具体用于：In a possible implementation manner of the fourth aspect of the present invention, the processing module is specifically configured to:
根据所述DLRS确定达到角度AoA；Determine the reaching angle AoA according to the DLRS;
根据所述AoA，确定接收下行数据使用的所述接收波束。According to the AoA, the receiving beam used for receiving downlink data is determined.
在本发明第四方面的一种可能实现方式中，所述发送模块还用于：在所述低频频段向所述基站上报能力指示信息，所述能力指示信息包括所述终端设备在所述高频频段上的接收波束的个数信息和所述终端设备在所述高频频段上的射频链路的个数信息中的至少一个。In a possible implementation manner of the fourth aspect of the present invention, the sending module is further configured to: report capability indication information to the base station in the low frequency frequency band, where the capability indication information includes that the terminal equipment is in the high frequency band. at least one of information on the number of receive beams in the frequency band and information on the number of radio frequency links of the terminal device in the high frequency band.
在本发明第四方面的一种可能实现方式中，所述接收模块还用于：通过所述低频频段接收所述基站发送的第三DCI，所述第三DCI包括一个或多个以下信息：基站发送波束跟踪信号BTRS的高频资源信息、基站射频链路个数或波束个数信息。In a possible implementation manner of the fourth aspect of the present invention, the receiving module is further configured to: receive a third DCI sent by the base station through the low frequency frequency band, where the third DCI includes one or more of the following information: The base station sends high-frequency resource information of the beam tracking signal BTRS, information on the number of radio frequency links of the base station or the number of beams.
在本发明第四方面的一种可能实现方式中，所述接收模块还用于：使用所述第三DCI指示的高频资源接收所述终端设备发送的所述BTRS；In a possible implementation manner of the fourth aspect of the present invention, the receiving module is further configured to: use the high-frequency resource indicated by the third DCI to receive the BTRS sent by the terminal device;
所述处理模块具体用于：根据所述BTRS确定所述基站在所述高频频段上发送下行数据使用的发送波束和所述终端设备在所述高频频段上接收下行数据使用的接收波束；The processing module is specifically configured to: determine, according to the BTRS, a transmit beam used by the base station to send downlink data on the high frequency frequency band and a receive beam used by the terminal device to receive downlink data on the high frequency frequency band;
所述发送模块还用于：通过所述低频频段将所述发送波束的信息发送给所述基站。The sending module is further configured to: send the information of the sending beam to the base station through the low frequency frequency band.
在本发明第一方面至第四方面，以及第一方面至第四方面的可能实现方式中，所述第二DCI包括用于指示高频传输时间单元TTU标识的信息。或者，所述第二DCI包括用于指示高频传输时间单元TTU分配的信息。In the first to fourth aspects of the present invention, and possible implementation manners of the first to fourth aspects, the second DCI includes information used to indicate a high-frequency transmission time unit TTU identifier. Alternatively, the second DCI includes information for indicating the allocation of the high frequency transmission time unit TTU.
在本发明第一方面至第四方面，以及第一方面至第四方面的可能实现方式中，所述低频频段为一个专用分量载波。或者，所述低频频段为分量载波的一个子带。In the first to fourth aspects of the present invention, and possible implementations of the first to fourth aspects, the low-frequency frequency band is a dedicated component carrier. Alternatively, the low frequency band is a subband of the component carrier.
在本发明第一方面至第四方面，以及第一方面至第四方面的可能实现方式中，所述高频资源包括时间资源和频率资源。In the first to fourth aspects of the present invention, and possible implementations of the first to fourth aspects, the high-frequency resources include time resources and frequency resources.
第五方面，一种无线通信系统，包括基站和终端设备，其中，所述基站如第三方面所述的基站，所述终端设备如第四方面所述的终端设备。In a fifth aspect, a wireless communication system includes a base station and a terminal device, wherein the base station is the base station described in the third aspect, and the terminal device is the terminal device described in the fourth aspect.
本发明实施例提供的通信方法、基站和终端设备，基站通过一个专用低频频段向终端设备发送DLRS、ULRS的指示信息和基站为终端设备分配的高频资源的信息，以使得终端设备根据ULRS的指示信息通过低频频段发送ULRS，基站根据URLS确定高频频段上发送下行数据使用的发送波束，同时终端设备也会根据DLRS确定高频频段上接收下行数据使用的接收波束，基站使用为终端设备分配的高频资源和发送波束向终端设备发送下行数据。所述方法通过低频频段辅助高频频段进行波束训练，以实现高频数据的传输。In the communication method, base station, and terminal device provided by the embodiments of the present invention, the base station sends DLRS and ULRS indication information and information of high-frequency resources allocated by the base station to the terminal device to the terminal device through a dedicated low-frequency frequency band, so that the terminal device can make the terminal device according to the ULRS The instruction information sends ULRS through the low frequency band, the base station determines the transmit beam used for sending downlink data on the high frequency band according to the URLS, and the terminal device also determines the receive beam used for receiving downlink data on the high frequency band according to the DLRS, and the base station uses it for the terminal device. The high-frequency resources and transmit beams transmit downlink data to terminal equipment. The method uses the low-frequency frequency band to assist the high-frequency frequency band to perform beam training, so as to realize the transmission of high-frequency data.
附图说明Description of drawings
图1为本发明实施例适用的一种网络系统架构的示意图；1 is a schematic diagram of a network system architecture to which an embodiment of the present invention is applicable;
图2为本发明实施例一提供的通信方法的流程图；FIG. 2 is a flowchart of a communication method provided by
图3为低频频段的一种示意图；Fig. 3 is a kind of schematic diagram of low frequency frequency band;
图4为低频频段的另一种示意图；Fig. 4 is another schematic diagram of low frequency frequency band;
图5为低频频段上的TTU的一种结构示意图；Fig. 5 is a kind of structural schematic diagram of TTU on the low frequency frequency band;
图6为DLRS的一种传输示意图；Fig. 6 is a kind of transmission schematic diagram of DLRS;
图7为URLS的一种传输示意图；Fig. 7 is a kind of transmission schematic diagram of URLS;
图8为低频TTU和高频TTU的对比示意图；FIG. 8 is a schematic diagram of the comparison of low-frequency TTU and high-frequency TTU;
图9为本发明实施例二提供的通信方法的流程图；9 is a flowchart of a communication method provided by
图10为本发明实施例三提供的通信方法的流程图；10 is a flowchart of a communication method provided by
图11为本发明实施例四提供的通信方法的流程图；11 is a flowchart of a communication method provided by Embodiment 4 of the present invention;
图12为本发明实施例五提供的基站的结构示意图；FIG. 12 is a schematic structural diagram of a base station according to Embodiment 5 of the present invention;
图13为本发明实施例六提供的终端设备的结构示意图；13 is a schematic structural diagram of a terminal device according to
图14为本发明实施例七提供的一种基站的示意性框图；14 is a schematic block diagram of a base station according to Embodiment 7 of the present invention;
图15为本发明实施例八提供的一种终端设备的示意性框图。FIG. 15 is a schematic block diagram of a terminal device according to Embodiment 8 of the present invention.
具体实施方式Detailed ways
本发明实施例提供一种通信方法，该通信方法可以将高频频段应用在网络系统中。图1为本发明实施例适用的一种网络系统架构的示意图，如图1所示，该网络系统架构包括基站和终端设备，该基站和终端设备同时支持高频频段和低频频段通信。其中，高频频段和低频频段是相对的概念，例如，基站可以工作在2.5GHz-3GHz频段和4GHz-4.5GHz频段，那么相对较低的2.5GHz-3GHz频段可以称为低频频段，相对较高的4GHz-4.5GHz频段可以称为高频频段。An embodiment of the present invention provides a communication method, which can apply a high frequency frequency band in a network system. FIG. 1 is a schematic diagram of a network system architecture to which an embodiment of the present invention is applicable. As shown in FIG. 1 , the network system architecture includes a base station and a terminal device, and the base station and the terminal device support both high-frequency band and low-frequency band communication. Among them, the high-frequency band and the low-frequency band are relative concepts. For example, the base station can work in the 2.5GHz-3GHz band and the 4GHz-4.5GHz band, then the relatively low 2.5GHz-3GHz band can be called the low-frequency band, which is relatively high. The 4GHz-4.5GHz band can be called the high frequency band.
本发明终端设备可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，用户设备可以指接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，简称为“SIP”)电话、无线本地环路(Wireless Local Loop，简称为“WLL”)站、个人数字处理(Personal DigitalAssistant，简称为“PDA”)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的UE等。The terminal equipment of the present invention can communicate with one or more core networks through a radio access network (Radio Access Network, RAN), and the user equipment can refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, Remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol ("SIP" for short) phone, a Wireless Local Loop ("WLL" for short) station, a Personal Digital Assistant (Personal Digital Assistant) , referred to as "PDA"), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, UEs in future 5G networks, etc.
本发明基站可以是用于与用户设备进行通信的网络侧设备，例如，可以是GSM系统或CDMA中的基站(Base Transceiver Station，简称为“BTS”)处理单元，也可以是WCDMA系统中的基站(NodeB，简称为“NB”)处理单元，还可以是LTE系统中的演进型基站(Evolutional Node B，简称为“eNB”或“eNodeB”)处理单元，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备，还可以是未来5G网络中的网络侧设备或未来演进的PLMN网络中的网络侧设备的处理单元等。The base station of the present invention may be a network-side device for communicating with user equipment, for example, may be a base station (Base Transceiver Station, referred to as "BTS") processing unit in a GSM system or CDMA, or a base station in a WCDMA system (NodeB, referred to as "NB") processing unit, may also be an evolved base station (Evolutional Node B, referred to as "eNB" or "eNodeB") processing unit in the LTE system, or the network device may be a relay station, access It can also be a network-side device in a future 5G network or a processing unit of a network-side device in a future evolved PLMN network, etc.
实施例一Example 1
图2为本发明实施例一提供的通信方法的交互图，如图2所示，本实施例的方法可以包括以下步骤：FIG. 2 is an interaction diagram of a communication method provided by
步骤101、基站通过低频频段向终端设备发送下行参考信号(Downlink ReferenceSignal，简称DLRS)、上行参考信号(Uplink Reference Signal，简称ULRS)的指示信息以及用于指示基站为终端设备分配的高频资源的信息。Step 101: The base station transmits, to the terminal equipment through the low frequency frequency band, the indication information of the Downlink Reference Signal (DLRS for short), the Uplink Reference Signal (ULRS for short), and the information used to instruct the base station to allocate high-frequency resources for the terminal equipment. information.
可选地，所述DLRS、ULRS的触发信息以及用于指示基站为终端设备分配的高频资源的信息可以通过物理下行控制信道(physical downlink control channel，PDCCH)或者物理下行广播信道(physical downlink broadcast channel，PDBCH)发送至终端设备。Optionally, the trigger information of the DLRS and ULRS and the information used to indicate the high-frequency resources allocated by the base station to the terminal device may pass through a physical downlink control channel (physical downlink control channel, PDCCH) or a physical downlink broadcast channel (physical downlink broadcast channel). channel, PDBCH) to the terminal device.
本实施例中，ULRS的指示信息和用于指示基站为终端设备分配的高频资源的信息可以通过同一个下行控制信息(Downlink Control Information，DCI)发送至终端设备，也可以分别通过不同的DCI发送至终端设备。例如，基站通过第一DCI指示上行参考信号ULRS的指示信息，通过第二DCI指示基站为终端设备分配的高频资源。In this embodiment, the ULRS indication information and the information used to instruct the base station to allocate high-frequency resources to the terminal equipment may be sent to the terminal equipment through the same downlink control information (Downlink Control Information, DCI), or may be sent to the terminal equipment through different DCIs respectively. sent to the end device. For example, the base station indicates the indication information of the uplink reference signal ULRS through the first DCI, and indicates the high frequency resources allocated by the base station for the terminal device through the second DCI.
本发明实施例中，基站和终端设备通过低频频段来确定将在高频频段传输所需要的发送波束和接收波束，该阶段可以称为波束训练。其中，该低频频段可以为一个专用分量载波(Component Carrier)，也可以为分量载波的一个子带(Subband)。其中，子带的定义可以参考3GPP标准的定义，这里不再赘述。图3为低频频段的一种示意图，如图3所示，该低频频段是在现有的通信系统工作的普通分量载波之外，新增加一个专用分量载波，该专用分量载波仅用于辅助高频频段进行波束训练。图4为低频频段的另一种示意图，如图4所示，该低频频段为现有的通信系统工作的普通分量载波中的一个子带。In this embodiment of the present invention, the base station and the terminal device use the low frequency frequency band to determine the transmit beam and the receive beam required for transmission in the high frequency frequency band, and this stage may be called beam training. The low frequency band may be a dedicated component carrier (Component Carrier), or may be a subband (Subband) of the component carrier. The definition of the subband may refer to the definition of the 3GPP standard, which will not be repeated here. Fig. 3 is a schematic diagram of a low frequency frequency band. As shown in Fig. 3, the low frequency frequency band is a new dedicated component carrier in addition to the common component carrier working in the existing communication system. The dedicated component carrier is only used to assist high-frequency frequency band for beam training. FIG. 4 is another schematic diagram of a low frequency frequency band. As shown in FIG. 4 , the low frequency frequency band is a sub-band of a common component carrier in which an existing communication system operates.
具体地，在该低频频段上传输步骤101中所述的信息时，可以采用频分复用(Frequency Division Duplex，简称)的方式进行上下行数据的传输，也可以采用时分复用(Time Division Duplex，简称TDD)的方式进行上下行数据的传输。Specifically, when the information described in step 101 is transmitted on the low-frequency frequency band, a frequency division multiplexing (Frequency Division Duplex, abbreviated) method may be used to transmit uplink and downlink data, or a time division multiplexing (Time Division Duplex) method may be used. , TDD for short) way to transmit uplink and downlink data.
示例性地，该低频频段上传输的数据可以采用图5所示的格式，图5为低频频段上的传输时间单元(Transmission Time Unit，简称TTU)的一种结构示意图，需要说明的是，低频频段上传输的数据也可以采用传输时间间隔(Transmission Time Interval，简称TTI)作为最小传输单元。TTI是指在无线链路中的一个独立解码传输的长度。在3GPP LTE与LTE-A的标准中，一般认为1TTI等于1ms。即一个Subframe(子帧等于2slot)的大小，它是无线资源管理所管辖时间的基本单位。在未来的5G标准中，TTI可能等于1个时隙(slot)或者小时隙(mini-slot)，在本发明实施例中，TTI或者TTU标识最小传输单元，为方便，下文TTI和TTU统一称为TTU。如图5所示，示例性地，低频TTU包括至少5个OFDM符号，低频TTU是指低频频段上传输的TTU。其中，至少一个OFDM符号被用于传输DLRS，例如，低频TTU的最前面的OFDM符号用于传输DLRS。DLRS在频域上以一定的密度被等间隔的插入在OFDM符号相应的资源单元(Resource Element，简称RE)上。图6为DLRS的一种传输示意图，如图6所示，低频TTU的第一个OFDM符号用于传输DLRS，每3个子载波插入一个DLRS。本实施例中，基站可以采用图6所示的传输方式传输DLRS。需要说明的是，在传输DLRS的OFDM符号上，除了传输DLRS的RE之外，剩余的RE还可以用于传输高频频段上的广播信息和物理下行控制信道(PhysicalDownlink Control Channel，简称PDCCH)信息。Exemplarily, the data transmitted on the low-frequency frequency band may adopt the format shown in FIG. 5 . FIG. 5 is a schematic structural diagram of a transmission time unit (Transmission Time Unit, TTU for short) on the low-frequency frequency band. The data transmitted on the frequency band may also use a transmission time interval (Transmission Time Interval, TTI for short) as a minimum transmission unit. TTI refers to the length of an independently decoded transmission in the wireless link. In the standards of 3GPP LTE and LTE-A, it is generally considered that 1 TTI is equal to 1 ms. That is, the size of a Subframe (a subframe is equal to 2 slots) is the basic unit of time governed by the radio resource management. In the future 5G standard, TTI may be equal to 1 slot (slot) or mini-slot (mini-slot). In this embodiment of the present invention, TTI or TTU identifies the minimum transmission unit. For convenience, hereinafter TTI and TTU are collectively referred to as for TTU. As shown in FIG. 5 , exemplarily, the low-frequency TTU includes at least 5 OFDM symbols, and the low-frequency TTU refers to the TTU transmitted on the low-frequency frequency band. Wherein, at least one OFDM symbol is used to transmit DLRS, for example, the foremost OFDM symbol of the low frequency TTU is used to transmit DLRS. In the frequency domain, DLRSs are inserted into resource elements (Resource Elements, REs for short) corresponding to OFDM symbols at equal intervals with a certain density. FIG. 6 is a schematic diagram of DLRS transmission. As shown in FIG. 6 , the first OFDM symbol of the low-frequency TTU is used to transmit DLRS, and one DLRS is inserted into every 3 subcarriers. In this embodiment, the base station may use the transmission mode shown in FIG. 6 to transmit the DLRS. It should be noted that, on the OFDM symbol for transmitting DLRS, in addition to the REs for transmitting DLRS, the remaining REs can also be used to transmit broadcast information and physical downlink control channel (PhysicalDownlink Control Channel, PDCCH for short) information on the high-frequency band .
示例性地，在一个低频TTU中，至少一个OFDM符号用于传输PDCCH信息，该PDCCH用于传输高频频段的下行控制信息(Downlink Control Information，简称DCI)，本实施例中，基站为终端设备分配的高频资源的信息可以通过该DCI指示。传输PDCCH的OFDM符号可以是紧随传输DLRS的OFDM符号之后的OFDM符号。Exemplarily, in a low-frequency TTU, at least one OFDM symbol is used to transmit PDCCH information, and the PDCCH is used to transmit downlink control information (Downlink Control Information, DCI) in a high-frequency frequency band. In this embodiment, the base station is a terminal device. The information of the allocated high frequency resource can be indicated by the DCI. The OFDM symbol in which the PDCCH is transmitted may be an OFDM symbol immediately following the OFDM symbol in which the DLRS is transmitted.
示例性地，在一个低频TTU中，至少一个OFDM符号用于上行传输和下行传输的保护间隔(Guard Period，简称GP)，该GP用于基站进行下行传输到上行传输的切换操作。Exemplarily, in a low-frequency TTU, at least one OFDM symbol is used for a guard interval (Guard Period, GP for short) for uplink transmission and downlink transmission, and the GP is used for the base station to perform a switching operation from downlink transmission to uplink transmission.
示例性地，在一个低频TTU中，至少一个OFDM符号用于传输物理上行控制信道(Physical Uplink Control Channel，简称PUCCH)信息，该PUCCH信息具体可以为高频频段上传输的数据的ACK/NACK(Acknowledge、Non-Acknowledge)信息、高频频段的信道质量信息(Channel Quality Information，简称CQI)和信道状态信息(Channel StateInformation，简称CSI)等。Exemplarily, in a low-frequency TTU, at least one OFDM symbol is used to transmit physical uplink control channel (Physical Uplink Control Channel, PUCCH for short) information, and the PUCCH information may specifically be ACK/NACK ( Acknowledge, Non-Acknowledge) information, high frequency band channel quality information (Channel Quality Information, CQI for short) and Channel State Information (Channel State Information, CSI for short) and the like.
示例性地，在一个低频TTU中，至少一个OFDM符号用于传输上行参考信号(UplinkReference Signal，简称ULRS)。例如，可以将TTU的最后面的OFDM符号用作传输ULRS。终端设备插入ULRS的资源块(Resource Block，简称RB)的资源是由基站配置并通过相应的信令通知给终端设备的。终端设备在基站配置的RB上，以一定的密度等间隔的插入ULRS。图7为ULRS的一种传输示意图，如图7所示，低频TTU的最后一个OFDM用于传输ULRS，每2个子载波插入一个ULRS。在一个低频TTU内是否传输ULRS，是通过基站进行配置和触发的，只有在该低频TTU内配置并触发了ULRS的传输，则相应的OFDM符号才会用于ULRS传输，否则该OFDM符号传输PUCCH。Exemplarily, in a low frequency TTU, at least one OFDM symbol is used to transmit an uplink reference signal (Uplink Reference Signal, ULRS for short). For example, the last OFDM symbol of the TTU may be used for transmitting ULRS. The resource of the resource block (Resource Block, RB for short) inserted by the terminal device into the ULRS is configured by the base station and notified to the terminal device through corresponding signaling. The terminal device inserts ULRS at a certain density and at equal intervals on the RBs configured by the base station. FIG. 7 is a schematic diagram of a transmission of ULRS. As shown in FIG. 7 , the last OFDM of the low-frequency TTU is used to transmit ULRS, and one ULRS is inserted into every 2 subcarriers. Whether or not to transmit ULRS in a low-frequency TTU is configured and triggered by the base station. Only when ULRS transmission is configured and triggered in the low-frequency TTU, the corresponding OFDM symbol will be used for ULRS transmission, otherwise the OFDM symbol will transmit PUCCH .
步骤102、终端设备根据ULRS的指示信息，通过低频频段向基站发送ULRS。Step 102: The terminal device sends the ULRS to the base station through the low frequency frequency band according to the indication information of the ULRS.
ULRS的发送指示信息用于指示终端设备是否发送URLS。示例性地，该发送指示信息可以通过一个比特位表示，例如当该比特位置1时，表示终端设备应该发送ULRS，当该比特位置0时，表示终端设备不用发送ULRS。可选地，该ULRS的指示信息所在的DCI中还可以进一步包括发送ULRS的时频资源的信息，发送ULRS的时频资源的信息可以是发送ULRS的RB的索引，ULRS的时频资源可以通过码分复用的方式被多个终端设备复用，本实施例中，终端设备可以采用图7所示的传输方式传输ULRS。The ULRS sending indication information is used to indicate whether the terminal device sends the URLS. Exemplarily, the sending indication information may be represented by one bit, for example, when the bit position is 1, it indicates that the terminal device should send ULRS, and when the bit position is 0, it indicates that the terminal device does not need to send ULRS. Optionally, the DCI where the indication information of the ULRS is located may further include information on the time-frequency resource for sending the ULRS, the information on the time-frequency resource for sending the ULRS may be the index of the RB for sending the ULRS, and the time-frequency resource for the ULRS may be The code division multiplexing method is multiplexed by multiple terminal equipments. In this embodiment, the terminal equipment can transmit the ULRS by using the transmission method shown in FIG. 7 .
步骤103、终端设备根据DLRS确定在高频频段上接收下行数据使用的接收波束。Step 103: The terminal device determines, according to the DLRS, a receive beam used for receiving downlink data on the high-frequency frequency band.
一般地，DLRS有两个功能，第一个功能是作为下行传输的解调参考信号，终端设备通过对DLRS进行信道估计，根据信道估计的结果对下行数据进行解调。第二个功能是被终端设备用来进行到达角度(Angle of Arrival，简称AoA：)的估计，终端设备可以根据接收的DLRS采用一定的算法(例如，MUSIC算法、ESPRIT算法)估计出低频频段上传输的低频信号的AoA，利用收发天线之间的互易性，终端设备根据AoA获取高频频段上接收下行数据使用的接收波束。Generally, the DLRS has two functions. The first function is to serve as a demodulation reference signal for downlink transmission. The terminal device performs channel estimation on the DLRS and demodulates the downlink data according to the result of the channel estimation. The second function is used by the terminal device to estimate the Angle of Arrival (AoA: for short), and the terminal device can use a certain algorithm (for example, MUSIC algorithm, ESPRIT algorithm) to estimate the low frequency band according to the received DLRS. The AoA of the transmitted low-frequency signal uses the reciprocity between the transceiver antennas, and the terminal device obtains the receiving beam used for receiving downlink data on the high-frequency band according to the AoA.
步骤104、基站根据ULRS确定在高频频段上发送下行数据使用的发送波束。Step 104: The base station determines, according to the ULRS, a transmit beam used for transmitting downlink data on the high frequency frequency band.
终端设备传输的ULRS被基站用来进行AoA的估计，基站可以根据接收的ULRS采用一定的算法(例如，MUSIC算法、ESPRIT算法)估计出低频频段上低频信号的AoA，利用收发天线之间的互易性，基站可以根据低频频段上估计的AoA确定高频频段上的发送波束。The ULRS transmitted by the terminal equipment is used by the base station to estimate the AoA. The base station can use a certain algorithm (for example, the MUSIC algorithm, ESPRIT algorithm) to estimate the AoA of the low-frequency signal in the low-frequency band according to the received ULRS, and use the mutual interaction between the transmitting and receiving antennas. The base station can determine the transmit beam on the high frequency band according to the estimated AoA on the low frequency band.
步骤105、基站使用为终端设备分配的高频资源和发送波束在高频频段上向终端设备发送下行数据。Step 105: The base station transmits downlink data to the terminal device on the high-frequency frequency band using the high-frequency resource and the transmission beam allocated for the terminal device.
其中，基站为终端设备分配的高频资源的信息包括用于指示高频TTU标识的信息和/或用于指示高频TTU分配的信息。比如，可以在DCI中定义一个TTU_ID字段，TTU_ID字段用于指示该DCI是指示的N个高频TTU中的哪一个上的资源分配，例如定义一个3比特的TTU_ID字段，可以指示最多8个高频TTU，000-111分别标识8个高频TTU。因此，在第一种情况中，该DCI中包括用于指示高频TTU标识的信息。Wherein, the information of the high frequency resource allocated by the base station to the terminal device includes information used to indicate the high frequency TTU identifier and/or information used to indicate the allocation of the high frequency TTU. For example, a TTU_ID field can be defined in the DCI, and the TTU_ID field is used to indicate which of the N high-frequency TTUs indicated by the DCI is for resource allocation. For example, a 3-bit TTU_ID field can be defined, which can indicate up to 8 high-frequency TTUs. Frequency TTU, 000-111 respectively identify 8 high frequency TTU. Therefore, in the first case, the DCI includes information for indicating the high frequency TTU identification.
再比如，可以在DCI中定义一个TTU分配(TTU_ALLOCATION)字段，TTU_ALLOCATION用于指示该DCI是指示的哪些高频TTU上的资源分配，例如定义一个8比特的TTU_ALLOCATION字段，通过比特映射(bitmap)，最大可以支持8个高频TTU联合调度。比如，11001100标识基站给某个终端在第1，第2和第4，第5个高频TTU上分配有时频资源；10101010标识基站给某个终端设备在第1，第3，第5和第7个高频TTU上分配有时频资源。因此，在第二种情况中，该DCI中包括用于指示高频TTU分配的信息。For another example, a TTU allocation (TTU_ALLOCATION) field can be defined in DCI, and TTU_ALLOCATION is used to indicate which high-frequency TTUs indicated by the DCI are allocated resources. For example, an 8-bit TTU_ALLOCATION field can be defined. A maximum of 8 high-frequency TTU joint scheduling can be supported. For example, 11001100 identifies the base station to allocate time-frequency resources to a terminal on the 1st, 2nd, 4th, and 5th high-frequency TTU; Time-frequency resources are allocated on 7 high-frequency TTUs. Therefore, in the second case, the DCI includes information indicating high frequency TTU allocation.
本实施例中，一个低频TTU的长度为一个高频TTU的长度的N倍，此处N为大于1的整数。图8为低频TTU和高频TTU的对比示意图，如图8所示，比如，在一个低频TTU内，可以传输N＝4个高频TTU。因此，存在这样的一个时序关系，基站在第k个低频TTU的PDCCH上需要为终端设备调度第k+m个低频TTU内的N个高频TTU的资源，此处m(大于等于1)为调度延迟的低频TTU个数。在这m个低频TTU延迟时间内，终端设备和基站可以分别根据DLRS和ULRS进行相应的AoA估计，从而决定高频频段数据传输所采用的发送波束和接收波束。另外，基站在第k个低频TTU的PDCCH上触发终端设备在该低频TTU内的ULRS的发送。基站在为终端设备调度的第k+m个低频TTU内的N个高频TTU上进行下行数据传输，则终端设备在第k+m+l个低频TTU内的PUCCH上反馈下行数据对应的ACK/NACK消息，其中，l(大于等于1)个低频TTU作为高频频段数据接收和处理的延迟。In this embodiment, the length of a low frequency TTU is N times the length of a high frequency TTU, where N is an integer greater than 1. FIG. 8 is a schematic diagram of a comparison between a low-frequency TTU and a high-frequency TTU. As shown in FIG. 8 , for example, in one low-frequency TTU, N=4 high-frequency TTUs can be transmitted. Therefore, there is such a timing relationship, the base station needs to schedule resources of N high-frequency TTUs in the k+m-th low-frequency TTU for the terminal device on the PDCCH of the k-th low-frequency TTU, where m (greater than or equal to 1) is The number of low-frequency TTUs for scheduling delays. During the m low-frequency TTU delay time, the terminal device and the base station can perform corresponding AoA estimation according to the DLRS and ULRS, respectively, so as to determine the transmit beam and receive beam used for data transmission in the high-frequency band. In addition, the base station triggers, on the PDCCH of the kth low-frequency TTU, the terminal equipment to send ULRS in the low-frequency TTU. The base station performs downlink data transmission on N high-frequency TTUs in the k+mth low-frequency TTU scheduled for the terminal device, then the terminal device feeds back the ACK corresponding to the downlink data on the PUCCH in the k+m+lth low-frequency TTU /NACK message, where 1 (greater than or equal to 1) low-frequency TTUs are used as the delay for receiving and processing high-frequency band data.
步骤106、终端设备向基站发送下行数据的反馈消息。Step 106: The terminal device sends a feedback message of downlink data to the base station.
下行数据的反馈消息包括ACK和NACK消息，终端设备可以使用低频频段向基站发送下行数据的反馈消息，终端设备也可以使用高频频段向基站发送下行数据的反馈消息。终端设备可以根据高频TTU和低频TTU的时序关系，确定发送下行数据的反馈消息使用的TTU。The downlink data feedback message includes ACK and NACK messages. The terminal device can use the low frequency band to send the downlink data feedback message to the base station, and the terminal device can also use the high frequency band to send the downlink data feedback message to the base station. The terminal device can determine the TTU used for sending the feedback message of the downlink data according to the time sequence relationship between the high frequency TTU and the low frequency TTU.
本实施例中，基站通过低频频段向终端设备发送DLRS、ULRS的指示信息和基站为终端设备分配的高频资源的信息，以使得终端设备根据ULRS的指示信息通过低频频段发送ULRS，基站根据ULRS确定高频频段上发送下行数据使用的发送波束，同时终端设备也会根据DLRS确定高频频段上接收下行数据使用的接收波束，基站使用为终端设备分配的高频资源和发送波束向终端设备发送下行数据。所述方法通过低频频段辅助高频频段进行波束训练，以实现高频数据的传输。In this embodiment, the base station sends the DLRS and ULRS indication information and the high-frequency resource information allocated by the base station to the terminal equipment to the terminal equipment through the low frequency frequency band, so that the terminal equipment sends the ULRS through the low frequency frequency band according to the ULRS indication information, and the base station according to the ULRS Determine the transmit beam used to send downlink data on the high-frequency band, and the terminal device will also determine the receive beam used to receive downlink data on the high-frequency band according to DLRS. The base station uses the high-frequency resources and transmit beams allocated for the terminal device. Downlink data. The method uses the low-frequency frequency band to assist the high-frequency frequency band to perform beam training, so as to realize the transmission of high-frequency data.
下面采用几个具体的实施例，对实施例一所示方法实施例的技术方案进行详细说明。The following uses several specific embodiments to describe in detail the technical solutions of the method embodiment shown in the first embodiment.
实施例二
图9为本发明实施例二提供的通信方法的流程图，如图9所示，本实施例的方法可以包括以下步骤：FIG. 9 is a flowchart of a communication method provided by
步骤201、基站通过低频频段向终端设备发送DLRS和DCI，该DCI包括ULRS的指示信息和基站为终端设备分配的高频资源。Step 201, the base station sends the DLRS and DCI to the terminal equipment through the low frequency frequency band, where the DCI includes the ULRS indication information and the high frequency resources allocated by the base station for the terminal equipment.
该DCI在指示基站为终端设备分配的高频资源时，需要考虑两种情况。第一种情况，一个DCI对应一个终端设备在一个高频TTU上的资源分配，当终端设备被调度到多个高频TTU上时，基站需要向该终端设备发送多个DCI。基于第一种情况，基站可以为终端设备在不同的高频TTU上分配不同的频域资源。第二种情况，一个DCI对应一个终端设备在多个高频TTU上的资源分配。如果终端设备被调度到多个高频TTU上，则在这些高频TTU上分配的频域资源是相同的。When the DCI indicates the high frequency resource allocated by the base station for the terminal device, two situations need to be considered. In the first case, one DCI corresponds to the resource allocation of one terminal device on one high-frequency TTU. When the terminal device is scheduled to multiple high-frequency TTUs, the base station needs to send multiple DCIs to the terminal device. Based on the first situation, the base station can allocate different frequency domain resources for the terminal device on different high frequency TTUs. In the second case, one DCI corresponds to the resource allocation of one terminal device on multiple high-frequency TTUs. If a terminal device is scheduled to multiple high-frequency TTUs, the frequency domain resources allocated on these high-frequency TTUs are the same.
在第一种情况中，可以在DCI中定义一个TTU_ID字段，TTU_ID字段用于指示该DCI是指示的N个高频TTU中的哪一个上的资源分配，例如定义一个3比特的TTU_ID字段，可以指示最多8个高频TTU，000-111分别标识8个高频TTU。因此，在第一种情况中，该DCI中包括用于指示高频TTU标识的信息。In the first case, a TTU_ID field can be defined in the DCI, and the TTU_ID field is used to indicate which of the indicated N high-frequency TTUs the DCI is for resource allocation. For example, a 3-bit TTU_ID field can be defined. Indicates up to 8 high-frequency TTUs, and 000-111 identifies 8 high-frequency TTUs respectively. Therefore, in the first case, the DCI includes information for indicating the high frequency TTU identification.
在第二种情况中，可以在DCI中定义一个TTU分配(TTU_ALLOCATION)字段，TTU_ALLOCATION用于指示该DCI是指示的哪些高频TTU上的资源分配，例如定义一个8比特的TTU_ALLOCATION字段，通过比特映射(bitmap)，最大可以支持8个高频TTU联合调度。比如，11001100标识基站给某个终端在第1，第2和第4，第5个高频TTU上分配有时频资源；10101010标识基站给某个终端设备在第1，第3，第5和第7个高频TTU上分配有时频资源。因此，在第二种情况中，该DCI中包括用于指示高频TTU分配的信息。In the second case, a TTU allocation (TTU_ALLOCATION) field can be defined in the DCI, and TTU_ALLOCATION is used to indicate which high-frequency TTUs indicated by the DCI are allocated resources, for example, define an 8-bit TTU_ALLOCATION field, through bit mapping (bitmap), can support up to 8 high-frequency TTU joint scheduling. For example, 11001100 identifies the base station to allocate time-frequency resources to a terminal on the 1st, 2nd, 4th, and 5th high-frequency TTU; Time-frequency resources are allocated on 7 high-frequency TTUs. Therefore, in the second case, the DCI includes information indicating high frequency TTU allocation.
本实施例中，ULRS的指示信息和基站为终端设备分配的高频资源的信息携带在一个DCI中，使得波束训练过程和数据调度过程同时进行，每次数据调度都需要进行波束训练。In this embodiment, the indication information of the ULRS and the information of the high frequency resources allocated by the base station to the terminal equipment are carried in one DCI, so that the beam training process and the data scheduling process are performed simultaneously, and beam training is required for each data scheduling.
步骤202、终端设备根据ULRS的指示信息，通过低频频段向基站发送ULRS。Step 202, the terminal device sends the ULRS to the base station through the low frequency frequency band according to the indication information of the ULRS.
终端设备在接收到DCI中的ULRS指示信息后，在相应的低频TTU上发送ULRS。终端设备可以在基站发送该ULRS的指示信息的低频TTU内发送ULRS，也可以在基站发送该ULRS的指示信息的低频TTU之后延迟几个低频TTU发送ULRS。其中，终端设备延迟的低频TTU的个数可以由基站设定一个定值，也可以由基站配置，然后通过信令下发到终端设备。After receiving the ULRS indication information in the DCI, the terminal device sends the ULRS on the corresponding low-frequency TTU. The terminal device may send the ULRS within the low-frequency TTU in which the base station sends the ULRS indication information, or may send the ULRS with several low-frequency TTUs after the base station sends the low-frequency TTU of the ULRS indication information. The number of low-frequency TTUs delayed by the terminal equipment may be set by the base station as a fixed value, or may be configured by the base station, and then sent to the terminal equipment through signaling.
步骤203、终端设备根据DLRS确定在高频频段上接收下行数据使用的接收波束。Step 203: The terminal device determines, according to the DLRS, a receive beam used for receiving downlink data on the high frequency frequency band.
步骤204、基站根据ULRS确定在高频频段上发送下行数据使用的发送波束。Step 204 , the base station determines, according to the ULRS, a transmit beam used for transmitting downlink data on the high-frequency frequency band.
步骤203和步骤204的具体实现方式参照实施例一的相关说明，这里不再赘述。需要说明的是，本实施例中，高频收发天线和低频收发天线具有互易性，高频频段和低频频段上的接收波束和发送波束一致，且低频频段的发送波束和高频频段的发送波束一致。For the specific implementation manner of step 203 and step 204, reference is made to the relevant description of
步骤205、基站使用为终端分配的高频资源和发送波束在高频频段上向终端设备发送下行数据。Step 205 , the base station sends downlink data to the terminal device on the high-frequency frequency band using the high-frequency resource and the transmission beam allocated for the terminal.
相应的，终端设备使用步骤203中确定的接收波束在高频频段上接收基站发送的下行数据，并根据下行数据的接收结果确定反馈消息。如果下行数据接收成功，则反馈消息为ACK消息，如果下行数据接收失败，则反馈消息为NACK消息。Correspondingly, the terminal device uses the receiving beam determined in step 203 to receive the downlink data sent by the base station on the high frequency frequency band, and determines the feedback message according to the reception result of the downlink data. If the downlink data is received successfully, the feedback message is an ACK message, and if the downlink data reception fails, the feedback message is a NACK message.
步骤206、终端设备向基站发送下行数据的反馈消息。Step 206: The terminal device sends a feedback message of downlink data to the base station.
步骤206的具体实现方式参照实施例一的相关描述，这里不再赘述。For the specific implementation of step 206, reference is made to the relevant description of
本实施例中，基站通过低频频段向终端设备发送DLRS和DCI，该DCI用于指示ULRS的指示信息和基站为终端设备分配的高频资源指示信息，并且基站根据终端设备发送的URLS确定高频频段上发送下行数据使用的发送波束，同时终端设备也会根据DLRS确定高频频段上接收下行数据使用的接收波束，从而完成波束训练过程，在波束训练结束后，基站使用训练得到的发送波束和为终端设备分配的高频资源向终端设备发送下行数据，终端设备使用训练得到的接收波束接收下行数据。所述方法通过低频频段辅助高频频段进行波束训练，以实现高频数据的传输。In this embodiment, the base station sends DLRS and DCI to the terminal device through the low-frequency frequency band, and the DCI is used to indicate the ULRS indication information and the high-frequency resource indication information allocated by the base station to the terminal device, and the base station determines the high frequency according to the URLS sent by the terminal device. The transmitting beam used for sending downlink data on the frequency band, and the terminal device will also determine the receiving beam used for receiving downlink data on the high-frequency frequency band according to DLRS, so as to complete the beam training process. The high-frequency resources allocated for the terminal equipment send downlink data to the terminal equipment, and the terminal equipment receives the downlink data using the received beams obtained by training. The method uses the low-frequency frequency band to assist the high-frequency frequency band to perform beam training, so as to realize the transmission of high-frequency data.
实施例三
图10为本发明实施例三提供的通信方法的交互图，如图10所示，本实施例的方法可以包括以下步骤：FIG. 10 is an interaction diagram of the communication method provided by
步骤301、基站通过低频频段向终端设备发送DLRS和第一DCI，第一DCI包括ULRS的指示信息。Step 301 , the base station sends the DLRS and the first DCI to the terminal device through the low frequency frequency band, and the first DCI includes the indication information of the ULRS.
其中，该第一DCI可以包括一个终端设备的ULRS的指示信息，即第一DCI指示一个终端设备发送ULRS，该第一DCI也可以包括一个终端设备组(Group-specific)的ULRS的指示信息，即第一DCI指示一个终端设备组内的多个终端设备发送ULRS。Wherein, the first DCI may include ULRS indication information of a terminal device, that is, the first DCI instructs a terminal device to send ULRS, and the first DCI may also include a terminal device group (Group-specific) ULRS indication information, That is, the first DCI instructs multiple terminal devices in one terminal device group to send ULRS.
步骤302、终端设备根据ULRS的指示信息，通过低频频段向基站发送ULRS。Step 302: The terminal device sends the ULRS to the base station through the low frequency frequency band according to the indication information of the ULRS.
步骤303、终端设备根据DLRS确定在高频频段上接收下行数据使用的接收波束。Step 303: The terminal device determines, according to the DLRS, a receive beam used for receiving downlink data on the high-frequency frequency band.
步骤304、基站根据ULRS确定在高频频段上发送下行数据使用的发送波束。Step 304: The base station determines, according to the ULRS, a transmit beam used for transmitting downlink data on the high frequency frequency band.
步骤302-304的具体实现方式参照实施例一和实施例二的相关描述，这里不再赘述。For the specific implementation manner of steps 302-304, reference is made to the relevant descriptions of
步骤305、基站通过低频资源向终端设备发送第二DCI，第二DCI用于指示基站为终端设备分配的高频资源。Step 305, the base station sends the second DCI to the terminal device through the low frequency resource, and the second DCI is used to indicate the high frequency resource allocated by the base station to the terminal device.
本实施例中，一个第二DCI可以对应一个终端设备在一个高频TTU上的资源分配，当终端设备被调度到多个高频TTU上时，一个第二DCI也可以对应一个终端设备在多个高频TTU上的资源分配。相应的，当一个第二DCI可以对应一个终端设备在一个高频TTU上的资源分配时，第二DCI包括用于指示高频TTU标识的信息。当一个第二DCI也可以对应一个终端设备在多个高频TTU上的资源分配时，第二DCI包括用于指示高频TTU分配的信息。本步骤的具体实现方式参照实施例二步骤201的相关描述，这里不再赘述。In this embodiment, one second DCI may correspond to resource allocation of one terminal device on one high-frequency TTU. When the terminal device is scheduled to multiple high-frequency TTUs, one second DCI may also correspond to one terminal device on multiple high-frequency TTUs. resource allocation over a high frequency TTU. Correspondingly, when a second DCI can correspond to resource allocation of a terminal device on a high-frequency TTU, the second DCI includes information for indicating an identifier of the high-frequency TTU. When a second DCI may also correspond to resource allocation of a terminal device on multiple high-frequency TTUs, the second DCI includes information used to indicate the allocation of high-frequency TTUs. For the specific implementation of this step, refer to the relevant description of step 201 in the second embodiment, and details are not repeated here.
本实施例中，基站将ULRS的指示信息和基站为终端设备分配的高频资源的信息分别通过不同的DCI指示，可以使得波束训练过程和数据调度过程独立进行。如此，通过一次波束训练，可以进行多次数据调度，使得数据的调度更加灵活，并且能够降低波束训练的开销。In this embodiment, the base station indicates the ULRS indication information and the high-frequency resource information allocated by the base station for the terminal device through different DCIs, so that the beam training process and the data scheduling process can be performed independently. In this way, through one beam training, multiple data scheduling can be performed, which makes the data scheduling more flexible and can reduce the overhead of beam training.
步骤306、基站使用为终端设备分配的高频资源和发送波束在高频频段上向终端设备发送下行数据。Step 306: The base station transmits downlink data to the terminal device on the high-frequency frequency band using the high-frequency resource and the transmission beam allocated for the terminal device.
相应的，终端设备使用步骤303中确定的接收波束在高频频段上接收基站发送的下行数据。并根据下行数据的接收结果确定反馈消息。Correspondingly, the terminal device uses the receiving beam determined in step 303 to receive the downlink data sent by the base station on the high frequency frequency band. And determine the feedback message according to the reception result of the downlink data.
步骤307、终端设备向基站发送下行数据的反馈消息。Step 307: The terminal device sends a feedback message of downlink data to the base station.
本实施例中，基站通过一个专用低频频段向终端设备发送DLRS、第一DCI和第二DCI，该第一DCI包括ULRS的指示信息，第二DCI用于指示基站为终端设备分配的高频资源信息，以使得终端设备根据ULRS的指示信息通过低频频段发送ULRS，基站根据ULRS确定高频频段上发送下行数据使用的发送波束，同时终端设备也会根据DLRS确定高频频段上接收下行数据使用的接收波束，从而完成波束训练，在波束训练结束后，基站使用训练得到的发送波束和为终端设备分配的高频资源向终端设备发送下行数据。所述方法通过低频频段辅助高频频段进行波束训练，以实现高频数据的传输。In this embodiment, the base station sends the DLRS, the first DCI, and the second DCI to the terminal equipment through a dedicated low-frequency frequency band, where the first DCI includes ULRS indication information, and the second DCI is used to indicate the high-frequency resources allocated by the base station to the terminal equipment information, so that the terminal device sends ULRS through the low-frequency band according to the ULRS indication information, the base station determines the transmit beam used for sending downlink data on the high-frequency band according to the ULRS, and the terminal device also determines the high-frequency band according to the DLRS. The beam is received to complete the beam training. After the beam training is completed, the base station sends downlink data to the terminal device using the training beam and the high-frequency resources allocated to the terminal device. The method uses the low-frequency frequency band to assist the high-frequency frequency band to perform beam training, so as to realize the transmission of high-frequency data.
实施例四Embodiment 4
图11为本发明实施例四提供的通信方法的交互图，如图11所示，本实施例的方法可以包括以下步骤：FIG. 11 is an interaction diagram of a communication method provided by Embodiment 4 of the present invention. As shown in FIG. 11 , the method of this embodiment may include the following steps:
步骤401、终端设备向基站上报能力指示信息。Step 401: The terminal device reports capability indication information to the base station.
可选地，该能力指示信息包括终端设备在高频频段上的接收波束的个数信息和/或终端设备在高频频段上的射频链路的个数信息。Optionally, the capability indication information includes information on the number of receiving beams of the terminal device in the high frequency band and/or information on the number of radio frequency links in the high frequency band of the terminal device.
步骤402、基站通过低频频段向终端设备发送DLRS和第一DCI，第一DCI包括ULRS的指示信息。Step 402, the base station sends the DLRS and the first DCI to the terminal device through the low frequency frequency band, and the first DCI includes the indication information of the ULRS.
其中，该第一DCI包括一个终端设备的ULRS的指示信息，也可以包括一个终端设备组的ULRS的指示信息。Wherein, the first DCI includes ULRS indication information of a terminal equipment, and may also include ULRS indication information of a terminal equipment group.
步骤403、终端设备根据ULRS的指示信息向通过低频频段向基站发送ULRS。Step 403, the terminal device sends the ULRS to the base station through the low frequency frequency band according to the indication information of the ULRS.
步骤404、终端设备根据DLRS确定在低频频段的接收方向角。Step 404, the terminal device determines the receiving direction angle in the low frequency frequency band according to the DLRS.
步骤405、基站根据ULRS确定在低频频段的发送方向角。Step 405, the base station determines the transmission direction angle in the low frequency frequency band according to the ULRS.
步骤406、基站通过低频频段向终端设备发送第三DCI。Step 406, the base station sends the third DCI to the terminal device through the low frequency band.
可选地，该第三DCI包括一个或多个以下信息：基站发送波束跟踪信号(BeamTracking Reference Signal，简称BTRS)的高频资源信息、基站射频链路个数或波束个数信息。其中，第三DCI中包括的高频资源信息用于通知终端设备基站发送BTRS使用的高频资源，射频链路个数信息用于通知终端设备基站发送BTRS使用的射频链路的个数，波束个数信息用于通知终端设备基站发送BTRS使用的发送波束的个数。Optionally, the third DCI includes one or more of the following information: high-frequency resource information of a beam tracking signal (BeamTracking Reference Signal, BTRS for short) sent by the base station, information on the number of radio frequency links of the base station or the number of beams. The high-frequency resource information included in the third DCI is used to notify the terminal equipment base station of the high-frequency resources used by the base station to send the BTRS, and the information on the number of radio frequency links is used to notify the terminal equipment of the number of radio frequency links used by the base station to send the BTRS. The number information is used to notify the terminal equipment of the number of transmit beams used by the base station to transmit the BTRS.
相应的，在步骤406之前，基站根据终端设备上报的能力指示信息确定发送BTRS使用的高频资源。例如，假设基站波束个数为8，射频链路个数为1，训练一对波束需要1个OFDM符号的资源。如果终端设备上报的接收波束个数为4，射频链路个数为1，则需要使用32个OFDM符号发送BTRS进行波束训练；如果终端设备上报的接收波束个数为4，射频链路个数为2，则需要使用16个OFDM符号发送BTRS进行波束训练。Correspondingly, before step 406, the base station determines the high frequency resource used for sending the BTRS according to the capability indication information reported by the terminal device. For example, assuming that the number of base station beams is 8 and the number of radio frequency links is 1, training a pair of beams requires resources of 1 OFDM symbol. If the number of receiving beams reported by the terminal device is 4 and the number of RF links is 1, 32 OFDM symbols need to be used to send BTRS for beam training; if the number of receiving beams reported by the terminal device is 4, the number of RF links If it is 2, 16 OFDM symbols need to be used to send BTRS for beam training.
步骤407、基站根据低频频段的发送方向角和第三DCI中指示的高频资源向终端设备发送BTRS。Step 407 , the base station sends the BTRS to the terminal device according to the sending direction angle of the low frequency frequency band and the high frequency resource indicated in the third DCI.
具体的，基站可以根据低频频段的发送方向角确定发送BTRS使用的发送波束，其中，基站确定的发送波束的个数与第三DCI中包括的波束个数相同。假设发送波束的个数为4个，则基站可以以低频频段的发送方向角为中心点，选择低频频段的发送方向角周围的四个发送波束用于发送BTRS。Specifically, the base station may determine the transmit beam used for transmitting the BTRS according to the transmit direction angle of the low frequency frequency band, wherein the number of transmit beams determined by the base station is the same as the number of beams included in the third DCI. Assuming that the number of transmit beams is 4, the base station may select four transmit beams around the transmit direction angle of the low frequency frequency band for transmitting BTRS with the transmit direction angle of the low frequency frequency band as the center point.
相应的，终端设备根据第三DCI和低频频段的接收方向角接收基站发送的BTRS，终端设备可以以低频频段的接收方向角为中心点，选择低频频段的接收方向角周围的多个发送波束接收BTRS，终端设备确定的接收BTRS的接收波束的个数与向基站上报的能力指示信息中的接收波束的个数相同。在确定接收BTRS的接收波束后，根据基站发送BTRS使用的高频资源、射频链路的个数和发送波束的个数，接收基站发送的BTRS。Correspondingly, the terminal device receives the BTRS sent by the base station according to the third DCI and the receiving direction angle of the low-frequency frequency band, and the terminal device can take the receiving direction angle of the low-frequency frequency band as the center point, and select multiple transmit beams around the receiving direction angle of the low-frequency frequency band to receive the BTRS. For BTRS, the number of receive beams for receiving BTRS determined by the terminal device is the same as the number of receive beams in the capability indication information reported to the base station. After the receiving beam for receiving the BTRS is determined, the BTRS sent by the base station is received according to the high-frequency resources used by the base station to send the BTRS, the number of radio frequency links, and the number of sending beams.
步骤408、终端设备根据BTRS确定基站在高频频段上发送下行数据使用的发送波束和终端设备在高频频段上接收下行数据使用的接收波束。Step 408: The terminal device determines, according to the BTRS, a transmit beam used by the base station to send downlink data on the high frequency band and a receive beam used by the terminal device to receive downlink data on the high frequency band.
假设基站在4个发送波束上发送BTRS，终端设备在4个接收波束上接收BTRS，则终端设备会接收到16个BTRS，终端设备可以从接收到的16个BTRS中选择接收信号强度最强的BTRS，该接收信号最强的BTRS对应的发送波束为基站在高频频段上发送下行数据使用的发送波束，该接收信号强度最强的BTRS对应的接收波束为终端设备在高频频段上接收下行数据使用的接收波束。Assuming that the base station transmits BTRS on 4 transmit beams and the terminal device receives BTRS on 4 receive beams, the terminal device will receive 16 BTRS, and the terminal device can select the one with the strongest received signal strength from the 16 BTRS received. BTRS, the transmit beam corresponding to the BTRS with the strongest received signal is the transmit beam used by the base station to send downlink data on the high-frequency frequency band, and the receive beam corresponding to the BTRS with the strongest received signal strength is the terminal equipment receiving the downlink on the high-frequency frequency band. The receive beam used by the data.
步骤409、终端设备通过低频频段向基站发送该发送波束的信息。Step 409: The terminal device sends the information of the transmission beam to the base station through the low frequency frequency band.
具体地，该发送波束的信息包括发送波束的标识信息，比如，波束ID。Specifically, the information of the transmission beam includes identification information of the transmission beam, for example, a beam ID.
步骤410、基站通过低频资源向终端设备发送第二DCI，第二DCI用于指示基站为终端设备分配的高频资源。Step 410: The base station sends the second DCI to the terminal device through the low frequency resource, where the second DCI is used to indicate the high frequency resource allocated by the base station to the terminal device.
步骤411、基站使用为终端设备分配的高频资源和发送波束在高频频段上向终端设备发送下行数据。Step 411 , the base station sends downlink data to the terminal device on the high-frequency frequency band using the high-frequency resource and the transmission beam allocated for the terminal device.
基站使用步骤408中确定的发送波束向终端设备发送下行数据，相应的，终端设备使用步骤408中确定的接收波束接收基站发送的下行数据。The base station sends the downlink data to the terminal device using the transmit beam determined in step 408, and correspondingly, the terminal device uses the receive beam determined in step 408 to receive the downlink data sent by the base station.
步骤412、终端设备向基站发送下行数据的反馈消息。Step 412: The terminal device sends a feedback message of downlink data to the base station.
本实施例中，基站在低频频段上接收终端设备上报的能力指示信息，根据该能力指示信息向终端设备发送第三DCI以触发波束跟踪过程，并通过高频频段向终端设备发送BTRS，终端设备根据接收到的BTRS确定基站在高频频段上发送下行数据使用的发送波束和终端设备在高频频段上接收下行数据使用的接收波束，并通过低频频段将该发送波束信息发送给基站。通过波束跟踪过程，使得确定得到的高频频段上的发送波束和接收波束更加准确。In this embodiment, the base station receives capability indication information reported by the terminal device on the low frequency band, sends a third DCI to the terminal device according to the capability indication information to trigger the beam tracking process, and sends BTRS to the terminal device through the high frequency band. According to the received BTRS, determine the transmit beam used by the base station to send downlink data on the high frequency band and the receive beam used by the terminal device to receive downlink data on the high frequency band, and send the transmit beam information to the base station through the low frequency band. Through the beam tracking process, the determined transmit beam and receive beam on the high frequency band are more accurate.
实施例五Embodiment 5
图12为本发明实施例五提供的基站的结构示意图，如图12所示，本实施例提供的基站包括：发送模块11、接收模块12和处理模块13。FIG. 12 is a schematic structural diagram of a base station provided by Embodiment 5 of the present invention. As shown in FIG. 12 , the base station provided by this embodiment includes: a sending
其中，发送模块11，用于通过低频频段向终端设备发送下行参考信号DLRS和第一下行控制信息DCI，所述第一DCI包括上行参考信号ULRS的指示信息；Wherein, the sending
接收模块12，用于接收所述终端设备通过所述低频频段发送的ULRS；a receiving
处理模块13，用于根据所述ULRS确定在高频频段上发送下行数据使用的发送波束；a
所述发送模块11，还用于使用所述发送波束在所述高频频段上向所述终端设备发送下行数据。The sending
可选的，所述低频频段为一个专用分量载波或者为分量载波的一个子带。Optionally, the low frequency frequency band is a dedicated component carrier or a subband of the component carrier.
可选的，所述发送模块11还用于：通过所述低频资源向所述终端设备发送第二DCI，所述第二DCI用于指示所述基站为所述终端设备分配的高频资源。可选的，所述第二DCI包括用于指示高频传输时间单元TTU标识的信息。或者，所述第二DCI包括用于指示高频传输时间单元TTU分配的信息。Optionally, the sending
可选的，所述处理模块13具体用于：根据所述ULRS获取到达角度AoA，然后根据所述AoA，获取发送下行数据使用的所述发送波束。Optionally, the
可选的，所述接收模块12还用于：接收所述终端设备上报的能力指示信息，所述能力指示信息包括所述终端设备在所述高频频段上的接收波束的个数信息和/或所述终端设备在所述高频频段上的射频链路的个数信息。相应的，所述发送模块11还用于：通过所述低频资源向所述终端设备发送第三DCI，所述第三DCI包括一个或多个以下信息：基站发送波束跟踪信号BTRS的高频资源信息、基站射频链路个数或波束个数信息。所述处理模块具体用于：通过所述发送模块使用所述第三DCI指示的高频资源向所述终端设备发送所述BTRS。通过所述接收模块在所述低频频段接收所述终端设备发送的所述基站在所述高频频段上发送下行数据使用的发送波束。Optionally, the receiving
本实施例的基站，可用于执行上述实施例一至实施例四中由基站执行的步骤，具体实现方式和技术效果类似，这里不再赘述。The base station in this embodiment can be used to perform the steps performed by the base station in the first embodiment to the fourth embodiment. The specific implementation manner and technical effect are similar, and details are not repeated here.
实施例六
图13为本发明实施例六提供的终端设备的结构示意图，如图13所示，本实施例提供的终端设备包括：发送模块21、接收模块22和处理模块23。FIG. 13 is a schematic structural diagram of a terminal device provided by
接收模块22，用于通过低频频段接收基站发送的下行参考信号DLRS和第一下行控制信息DCI，所述第一DCI包括上行参考信号ULRS的指示信息；A receiving
发送模块21，用于根据所述ULRS的指示信息，通过所述低频频段向所述基站发送ULRS；A sending
处理模块23，用于根据所述DLRS确定在高频频段上接收下行数据使用的接收波束；a
所述接收模块22，还用于使用所述接收波束在所述高频频段上接收所述基站发送的下行数据。The receiving
可选的，所述低频频段为一个专用分量载波或者为分量载波的一个子带。Optionally, the low frequency frequency band is a dedicated component carrier or a subband of the component carrier.
可选的，所述接收模块22还用于：通过所述低频资源接收所述基站发送的第二DCI，所述第二DCI用于指示所述基站为所述终端设备分配的高频资源。可选的，所述第二DCI包括用于指示高频传输时间单元TTU标识的信息。或者，所述第二DCI包括用于指示高频传输时间单元TTU分配的信息。Optionally, the receiving
可选的，所述处理模块23具体用于：根据所述DLRS获取达到角度AoA，然后根据所述AoA，获取接收下行数据使用的所述接收波束。Optionally, the
可选的，所述发送模块21还用于：向所述基站上报能力指示信息，所述能力指示信息包括所述终端设备在所述高频频段上的接收波束的个数信息和/或所述终端设备在所述高频频段上的射频链路的个数信息。相应的，所述接收模块22还用于：通过所述低频资源接收所述基站发送的第三DCI，所述第三DCI包括一个或多个以下信息：基站发送波束跟踪信号BTRS的高频资源信息、基站射频链路个数或波束个数信息，以及使用所述第三DCI指示的高频资源接收所述终端设备发送的所述BTRS。所述处理模块23具体用于：根据所述BTRS确定所述基站在所述高频频段上发送下行数据使用的发送波束和所述终端设备在所述高频频段上接收下行数据使用的接收波束。所述发送模块21还用于：通过所述低频频段将所述发送波束的信息发送给所述基站。Optionally, the sending
本实施例的终端设备，可用于执行上述实施例一至实施例四中由终端设备执行的步骤，具体实现方式和技术效果类似，这里不再赘述。The terminal device in this embodiment can be used to perform the steps performed by the terminal device in the first embodiment to the fourth embodiment. The specific implementation manner and technical effect are similar, and details are not repeated here.
实施例七Embodiment 7
图14为本发明实施例七提供的一种基站的示意性框图。该基站1300包括处理器1310、存储器1320、收发器1330、天线1340、总线1350和用户接口1360。FIG. 14 is a schematic block diagram of a base station according to Embodiment 7 of the present invention. The
具体地，处理器1310控制网元1300的操作，处理器1310可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件。Specifically, the
收发器1330包括发射机1332和接收机1334，发射机1332用于发射信号，接收机1334用于接收信号。其中，天线1340的数目可以为一个或多个。网元1300还可以包括用户接口1360，比如键盘，麦克风，扬声器和/或触摸屏。用户接口1360可传递内容和控制操作到基站1300。The
基站1300的各个组件通过总线1350耦合在一起，其中总线系统1350除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统1350。需要说明的是，上述对于基站结构的描述，可应用于本发明的实施例。Various components of the
存储器1320可以包括只读存储器(Read Only Memory，ROM)和随机存取存储器(Random Access Memory，RAM)，或者可存储信息和指令的其他类型的动态存储设备，也可以是磁盘存储器。存储器1320可用于保存实现本发明实施例提供的相关方法的指令。可以理解，通过编程或装载可执行指令到网元1300的处理器1310，缓存和长期存储中的至少一个。The
本实施例的基站1300可执行实施例一至实施例四中的由基站执行的对应步骤，本发明实施例不再赘述。The
实施例八Embodiment 8
图15为本发明实施例八提供的一种终端设备的示意性框图。该终端设备1400包括处理器1410、存储器1420、收发器1430、天线1440、总线1450和用户接口1460。FIG. 15 is a schematic block diagram of a terminal device according to Embodiment 8 of the present invention. The
具体地，处理器1410控制网元1400的操作，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件。Specifically, the
收发器1430包括发射机1432和接收机1434，发射机1432用于发射信号，接收机1434用于接收信号。其中，天线1440的数目可以为一个或多个。终端设备1400还可以包括用户接口1460，比如键盘，麦克风，扬声器和/或触摸屏。用户接口1460可传递内容和控制操作到终端设备1400。The
终端设备1400的各个组件通过总线1450耦合在一起，其中总线系统1450除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统1450。需要说明的是，上述对于终端设备结构的描述，可应用于本发明的实施例。Various components of the
存储器1420可以包括只读存储器(Read Only Memory，ROM)和随机存取存储器(Random Access Memory，RAM)，或者可存储信息和指令的其他类型的动态存储设备，也可以是磁盘存储器。存储器1420可用于保存实现本发明实施例提供的相关方法的指令。可以理解，通过编程或装载可执行指令到终端设备1400的处理器1410，缓存和长期存储中的至少一个。The
本实施例的终端设备1400可执行实施例一至实施例四中的由终端设备执行的对应步骤，本发明实施例不再赘述。The
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, etc.
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.
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| CN110581725B (en)* | 2018-06-08 | 2023-08-22 | 华为技术有限公司 | Method and communication device for beam training |
| CN109548158B (en)* | 2019-01-09 | 2023-04-07 | 武汉虹信科技发展有限责任公司 | High-frequency band wave beam management method and wireless communication system |
| US20230247607A1 (en)* | 2020-06-19 | 2023-08-03 | Beijing Xiaomi Mobile Software Co., Ltd. | Wireless access method and system |
| EP4192160A4 (en)* | 2020-08-14 | 2023-09-20 | Huawei Technologies Co., Ltd. | Data transmission method and communication apparatus |
| CN116746245A (en)* | 2020-12-30 | 2023-09-12 | 华为技术有限公司 | Beam training method, device and communication equipment |
| CN114710812B (en)* | 2021-12-27 | 2023-11-28 | 荣耀终端有限公司 | Communication method and communication device |
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