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Communication method and equipment based on advanced antenna system

A technology of antenna system and communication method, applied in wireless communication, electrical components, network planning, etc., can solve problems such as system performance deterioration, achieve the effect of reducing access failure rate and improving random access quality

Active Publication Date: 2013-02-06
HUAWEI TECH CO LTD
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Problems solved by technology

Due to the introduction of AAS, no matter how the beams are adjusted, there must be an area where the beams overlap between two cells. Even through beam adjustments in the space dimension, interference cannot be avoided
Therefore, if there is no reasonable interference avoidance scheme, two adjacent eNBs use the same PRB resources in these beam overlapping areas, which will definitely generate stronger interference in the AAS system and deteriorate the system performance

Method used

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  • Communication method and equipment based on advanced antenna system
  • Communication method and equipment based on advanced antenna system
  • Communication method and equipment based on advanced antenna system

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042]When the UE performs handover between two base stations, only after it successfully receives the handover command (HO command) and the random access response (Random Access Response, RAR) of the new base station, can it successfully randomly access the new destination base station. According to the configuration of the target base station, the UE measures and reports the measurement quantities such as the Precoding Matrix Indicator (PMI) and...

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Abstract

The embodiment of the invention relates to a communication method and equipment based on an advanced antenna system. The communication method based on the advanced antenna system comprises the following steps of: receiving a measurement report transmitted by user equipment; transmitting a switching request command to a target base station according to the measurement report, wherein the switching request command carries a horizontal arrival angle, a vertical arrival angle and an antenna height of a source base station; receiving a switching response command returned by the target base station, wherein the switching request response carries a horizontal arrival angle and a vertical arrival angle of the target base station, which is figured out according to the horizontal arrival angle, the vertical arrival angle and the antenna height of the source base station, antenna height of the target base station as well as a distance between the source base station and the target base station; and transmitting a switching command to the user equipment according to the switching response command, so that the user equipment transmits a random access request command to the target base station so as to be accessed into the target base station. According to the embodiment of the invention, the random access quality of the UE to the target eNB is improved and the access failure rate is reduced.

Description

technical field [0001] The present invention relates to the field of wireless communication, more specifically, to a communication method and device based on an advanced antenna system. Background technique [0002] In future wireless communication systems, higher speed, larger capacity, and wider coverage are the main goals of system design. With limited spectrum resources, how to improve spectrum efficiency is an urgent problem to be solved. The Advanced Antenna System (AAS for short) can adaptively adjust the antenna mode by using multiple antenna elements, including horizontal and vertical elements, and aim the beamforming at a specific For users, the spatial dimension is added to the original time, frequency, and code resources, so that the wireless communication system can meet the large throughput requirements of modern data services to a greater extent, so as to achieve the purpose of expanding network coverage and improving system capacity. , AAS has become one of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/28H04W36/00H04W36/30
CPCH04W36/30H04W36/0072H04W36/00H04W16/28
Inventor 肖登坤吴彤崔杰韩静
Owner HUAWEI TECH CO LTD
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