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A method and device for realizing synchronization in beam training

A technology of beam training and carrier synchronization, which is applied in the direction of modulated carrier system, multi-frequency code system, diversity/multi-antenna system, etc., can solve the problems of delayed information change, no technical solution, timing synchronization and carrier synchronization not supported, etc. , to achieve the effect of ensuring the effectiveness of

Active Publication Date: 2020-08-25
ZTE CORP
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AI Technical Summary

Problems solved by technology

However, in beam training based on channel estimation, due to the switching of directional beams, the main physical propagation path of the wireless signal may change, and the information of the relative delay of the path may change.
If you still use the existing timing synchronization scheme that does not distinguish between the combination of the transmitting and receiving beams, the clock at the transmitting and receiving end may change with the switching of the directional beams, the unified reference will be lost, and the channel estimation results under different beam combinations will no longer be consistent. A unified reference base, which cannot effectively support the subsequent beam training algorithm based on channel estimation
[0008] At present, the existing technology does not support and have no relevant technical solutions to ensure timing synchronization and carrier synchronization in the beam training phase

Method used

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  • A method and device for realizing synchronization in beam training
  • A method and device for realizing synchronization in beam training
  • A method and device for realizing synchronization in beam training

Examples

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no. 2 example

[0090] In the second embodiment, the scenario where the receiving device sends a request requiring the sending device to use a specific reference beam to implement the transmission, Figure 4 It is a schematic flow chart of the second embodiment of the present invention, such as Figure 4 shown, including:

[0091] Step 400: In the beam training phase, the receiving device sends a request to the sending device to request the sending device to use a specific reference beam to implement transmission according to actual needs, such as Figure 4 Requests in Send Synchronous Reference Sequence Commands.

[0092] Step 401: the sending device adjusts the sending beam to a specific reference beam, and at the same time, the receiving device adjusts the receiving beam to a specific reference receiving beam.

[0093] Step 402: The sending device uses a specific reference beam to send the synchronization reference sequence, and the receiving device uses the specific reference beam to rece...

no. 3 example

[0095] In the third embodiment, the scenario where the sending device sends a request requiring the receiving device to use a specific reference beam to achieve reception, Figure 5 It is a schematic flow chart of the third embodiment of the present invention, as Figure 5 shown, including:

[0096] Step 500: In the beam training phase, the sending device sends a request to the receiving device to use a specific reference beam to achieve reception according to actual needs, such as Figure 5 Requests in Receive Synchronization Reference Sequence Instructions.

[0097] Step 501: the sending device adjusts the sending beam to a specific reference beam, and at the same time, the receiving device adjusts the receiving beam to a specific reference receiving beam.

[0098] Step 502: The sending device uses a specific reference beam to send the synchronization reference sequence, and the receiving device uses the specific reference beam to receive the synchronization reference sequ...

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Abstract

Disclosed in the present invention are a method and a device for synchronization in beam training, the method comprising: a sending device and a receiving device switching, during a beam training, into a particular reference beam of both the sending device and the receiving device; and the sending device sending a synchronization reference sequence using the particular reference beam, the receiving device receiving the synchronization reference sequence using the particular reference beam, and the receiving device executing timing synchronization and carrier synchronization. By means of the technical solutions provided in the present invention, the sending device and the receiving device achieve, in the beam training period, timing synchronization and carrier synchronization of high accuracy at the same reference (i.e. same physical propagation environment), thus well supporting that channel estimation results at different detection beams in the beam training period still have same reference time delay, same reference phase and negligible frequency offset at receiving and sending terminals, thereby guaranteeing the effectiveness of the beam training.

Description

technical field [0001] The present invention relates to but not limited to high frequency band communication technology, especially a method and device for realizing synchronization in beam training. Background technique [0002] With the continuous development of radio communication technology, a large number of various radio services have emerged, especially the upsurge of smart terminals in recent years, and consumers' demand for mobile communication capacity is showing an exponential increase. However, the spectrum resources that the existing 2G, 3G, and 4G mobile communication radio services rely on are concentrated in the very crowded low-to-medium frequency bands below 300 MHz to 3 GHz. Congested spectrum resources have restricted the development of mobile communication technology and cannot meet the needs of future wireless communication. [0003] In the emerging fifth-generation mobile communication technology (5G), the use of higher carrier frequencies has reached...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L27/26H04B7/06
CPCH04B7/0617H04L5/0048H04L27/2655H04L27/2657H04L5/00
Inventor 高波袁弋非王欣晖
Owner ZTE CORP
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