A spatial diversity scheme in communication systems of beamforming

A beamforming and beamforming technology, applied in the field of space diversity solutions in millimeter wave beamforming systems, to achieve the effect of enhancing mobile robustness

Active Publication Date: 2017-02-22
HFI INNOVATION INC
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  • Abstract
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  • Application Information

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Problems solved by technology

In addition, different levels of dedicated beams and control beams provide different spatial paths, resulting in different channel coherence times and fading dynamics

Method used

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  • A spatial diversity scheme in communication systems of beamforming
  • A spatial diversity scheme in communication systems of beamforming
  • A spatial diversity scheme in communication systems of beamforming

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Embodiment Construction

[0021] Some embodiments of the present invention will now be introduced in detail, and these examples will be described in conjunction with the accompanying drawings.

[0022] figure 1 is a schematic diagram of multi-level beams for achieving spatial diversity in a beamformed mobile communication network 100 according to a novel aspect. The beamforming millimeter wave mobile communication network 100 includes a base station eNB 101 and a user equipment UE 102 . In a Long Term Evolution (LTE) system, there are many handover scenarios and schemes, including intra-macro cell handover, intra-small cell handover, heterogeneous network (HetNet) and cross-system handover. In general, the mobility of LTE small cells can be used as a baseline for standalone mmWave small cells. However, the heavy reliance on directional transmission and the fragility of the propagation environment present unique challenges arising from channel characteristics and beamforming in mmWave small cells.

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Abstract

A method of providing spatial diversity for critical data delivery in a beamformed mmWave small cell is proposed. The proposed spatial diversity scheme offers duplicate or incremental data/signal transmission and reception by using multiple different beams for the same source and destination. The proposed spatial diversity scheme can be combined with other diversity schemes in time, frequency, and code, etc. for the same purpose. In addition, the proposed spatial diversity scheme combines the physical-layer resources associated with the beams with other resources of the same or different protocol layers. By spatial signaling repetition to avoid Radio Link Failure (RLF) and Handover Failure (HOF), mobility robustness can be enhanced. Mission-critical and/or time-critical data delivery can also be achieved without relying on retransmission.

Description

technical field [0001] Embodiments of the present invention generally relate to wireless communication, and more specifically, relate to a spatial diversity scheme (spatial diversity scheme) in a millimeter wave (MillimeterWave, mmW) beamforming system. Background technique [0002] Bandwidth shortages are increasingly being felt by mobile carriers, which has prompted the development of the underutilized mmWave spectrum between 3G and 300GHz for next-generation broadband cellular communication networks. The spectrum available in the mmWave band is more than 200 times that of traditional cellular systems. mmWave wireless networks use narrow beams for directional communication and can support multi-gigabit data rates. The bandwidth of the underutilized mmWave spectrum is in the wavelength range from 1mm to 100mm. The small wavelengths of the mmWave spectrum enable a large number of miniaturized antennas to be placed in a small area. Such miniaturized antenna systems generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
CPCH04B7/0619H04B7/0695H04W36/0079H04B7/0408C07D241/04C07D265/33C07D413/06C07D413/10C07D413/12C08G73/028C08G73/1017C09D179/02C09D179/08C25D3/30C25D3/32C25D3/38C25D3/58C25D3/60H04W72/23H04B7/0697H04J4/00H04J13/00H04L1/0003H04W72/0446H04W72/0453H04W72/046
Inventor 爱民·贾斯汀·桑游家豪张园园桂建卿
Owner HFI INNOVATION INC
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