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Communication method, base station and terminal equipment

A technology of terminal equipment and communication method, applied in the field of communication, can solve problems such as weak ability to penetrate obstacles, restricting high-frequency band applications, and large path loss.

Active Publication Date: 2020-09-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the high-frequency band represented by the millimeter-wave frequency band has the characteristics of large path loss, weak ability to penetrate obstacles, and severe rain attenuation at certain frequency points, which seriously restricts the application of high-frequency bands.

Method used

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  • Communication method, base station and terminal equipment
  • Communication method, base station and terminal equipment
  • Communication method, base station and terminal equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] figure 2 An interaction diagram of the communication method provided by Embodiment 1 of the present invention, such as figure 2 As shown, the method of this embodiment may include the following steps:

[0092] Step 101, the base station sends to the terminal equipment through the low-frequency band the indication information of the downlink reference signal (Downlink Reference Signal, DLRS for short), the uplink reference signal (Uplink Reference Signal, ULRS for short), and the high-frequency resource used to indicate the high-frequency resources allocated by the base station for the terminal equipment information.

[0093] 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 equipment may be transmitted through a physical downlink control channel (physical downlink control channel, PDCCH) or a physical downlink broadcast channel (physical downlink bro...

Embodiment 2

[0117] Figure 9 It is a flow chart of the communication method provided by Embodiment 2 of the present invention, such as Figure 9 As shown, the method of this embodiment may include the following steps:

[0118] Step 201 , the base station sends DLRS and DCI to the terminal device through the low frequency band, and the DCI includes ULRS indication information and high frequency resources allocated by the base station for the terminal device.

[0119] When the DCI indicates the high-frequency resources allocated by the base station to the terminal equipment, 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 on multiple high-frequency TTUs, the base station needs to send multiple DCIs to the terminal device. Based on the first case, the base station may allocate different frequency domain resources to the terminal equipment on differen...

Embodiment 3

[0134] Figure 10 The interaction diagram of the communication method provided by Embodiment 3 of the present invention, such as Figure 10 As shown, the method of this embodiment may include the following steps:

[0135] Step 301, the base station sends the DLRS and the first DCI to the terminal device through the low-frequency band, and the first DCI includes the indication information of the ULRS.

[0136] 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 ULRS indication information of a terminal device group (Group-specific), That is, the first DCI instructs multiple terminal devices in one terminal device group to send ULRS.

[0137] Step 302, the terminal device sends the ULRS to the base station through the low frequency band according to the instruction information of the ULRS.

[0138] Step 303, the terminal device determines the re...

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Abstract

An embodiment of the present invention provides a communication method, a base station, and a terminal device. The base station sends a DLRS and first downlink control information DCI to the terminal device through a low-frequency band, and the first DCI includes indication information of an uplink reference signal ULRS, wherein, The DLRS is used for the terminal device to determine the receiving beam used to receive downlink data on the high frequency band; the terminal device sends the ULRS through the low frequency band according to the indication information of the ULRS; the base station determines the transmission beam used to send the downlink data on the high frequency band according to the ULRS Beam, the terminal device determines the receiving beam used to receive downlink data on the high-frequency band according to DLRS, and the base station uses the high-frequency resources and transmission beams allocated for the terminal device to send downlink data to the terminal device. In the method, the low-frequency frequency band assists the high-frequency frequency band to perform beam training, so as to realize the transmission of high-frequency data.

Description

technical field [0001] The embodiments of the present invention relate to communication technologies, and in particular to a communication method, base station and terminal equipment. Background technique [0002] As the data transmission rate, communication quality and other requirements of mobile communication continue to increase, the existing frequency bands used for mobile communication have become very crowded. However, in the millimeter wave frequency band of 6-300GHz, there are still a large number of spectrum resources that have not been allocated for use. Introducing the millimeter-wave frequency band into mobile communications 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. [0003] However, the high-frequency band represented by the millimeter-wave frequency band has the characteristics of large path lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04
CPCH04W72/23H04W72/04
Inventor 黄磊王艺
Owner HUAWEI TECH CO LTD