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Method for Implementing Beam Tracking in a Communication System Based on Millimeter Wave Communication

A communication system, millimeter wave technology, applied in transmission systems, radio transmission systems, diversity/multi-antenna systems, etc., can solve problems such as limited size, narrow beam range, and performance degradation

Active Publication Date: 2019-10-11
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

But this transfer has some limitations:
Due to the narrow beam range, for highly mobile users, the performance will degrade as the user may move out of the coverage area of ​​the transmit beam
[0005] 2. The size of the codebook is limited, so it is difficult to achieve directional beam transmission (steering beam transmission) through a single Channel Quality Indicator (CQI) feedback

Method used

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  • Method for Implementing Beam Tracking in a Communication System Based on Millimeter Wave Communication
  • Method for Implementing Beam Tracking in a Communication System Based on Millimeter Wave Communication
  • Method for Implementing Beam Tracking in a Communication System Based on Millimeter Wave Communication

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Embodiment Construction

[0036] The basic idea of ​​the present invention is: in BT-MCQI, user equipment simultaneously feeds back multiple CQIs to the base station in the same time slot. This includes, for example, multiple PMIs (Precoding Matrix Indicator, precoding matrix indication) and magnitude vectors. These parameters are used to optimize the transmit beam so that the transmit beam can be accurately aimed / tracked at the UE. The features of the present invention are, for example:

[0037] 1. The optimized beam can better match the transmission channel to achieve directional beam transmission and achieve higher performance gain;

[0038] 2. Achieve smoother beam tracking and be able to provide stable user-specific services, such as providing data transmission with stable high data rates for specific user equipment;

[0039] 3. The requirement for the feedback cycle is small, and the system burden is reduced.

[0040] In the following, the method flow will be combined with image 3 and scene ...

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Abstract

The present invention provides a method and an apparatus of implementing beam tracing in a millimeter wave communication-based communication system. According an embodiment of the present invention, the method comprises: traversing ail precoding matrixes to calculate a channel capacity for a beam; selecting n precoding matrixes from the precoding matrixes, wherein the channel capacity calculated by using the n precoding matrixes is the top n maximum channel capacity in ail the calculated channel capacity; determining an amplitude vector, the amplitude vector consists of n channel performance indicators corresponding to the top n maximum channel capacity respectively; and sending n precoding matrix indicators corresponding to the n precoding matrixes and the amplitude vector to the base station. Through the present invention, multiple mobile user equipments can be supported with a high data rate in 5 G MMC networks.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a method and device for implementing beam tracking in a communication system based on millimeter wave communication. Background technique [0002] Millimeter Wave Communication (MMC) is regarded as a key technology in 5G wireless networks. MMC is expected to support gigabit-level data transmission. However, there are great challenges in the transmission channel quality of mmWave due to severe transmission loss. Fortunately, compact antenna arrays can be advantageously used in MMC due to the shorter wavelength compared to 4G networks. [0003] The beam-based transmission solution can significantly improve the channel quality and realize high data rate transmission. But this transfer has some limitations: [0004] 1. This transmission is more suitable for semi-static transmission situations. Due to the narrow beam range, for highly mobile users, the performance will d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0417H04B7/0452H04B7/0456H04B7/06
Inventor 孙欢
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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