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Apparatus and method for dynamic control of downlink beam width of an adaptive antenna array in a wireless network

A wireless network and beam width technology, applied in the field of devices and methods for dynamically controlling the downlink beam width of an adaptive antenna array in a wireless network, can solve problems such as high computational intensity, impracticality, and time-consuming, and achieve Effect of Optimizing Beamwidth

Inactive Publication Date: 2007-02-07
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] However, precomputing the beamforming coefficients for each segment is an inflexible solution that fails to correct the phase misalignment evenly over the entire area of ​​each segment
Additionally, the precomputed lookup tables assume a static physical environment, which is unrealistic in many urban areas
Furthermore, the learning or calibration phase is a time-consuming, computationally intensive process
Likewise, calculating beamwidth using FER also involves long calculations, which can lead to a suboptimal choice of beamwidth

Method used

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  • Apparatus and method for dynamic control of downlink beam width of an adaptive antenna array in a wireless network
  • Apparatus and method for dynamic control of downlink beam width of an adaptive antenna array in a wireless network
  • Apparatus and method for dynamic control of downlink beam width of an adaptive antenna array in a wireless network

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Embodiment Construction

[0021] In this patent document, Figures 1 to 1 are discussed below Figure 4 , and the various embodiments used to describe the principles of the invention are illustrative only and should not be construed in any way as limiting the scope of the invention. Those skilled in the art will understand that the principles of the invention may be implemented in any suitably arranged wireless network.

[0022] Figure 1 illustrates an exemplary wireless network 100 in which beamwidths are optimized in accordance with the principles of the present invention. Wireless network 100 includes a plurality of cell sites 121-123, each cell containing one of base stations BS101, BS102, or BS103. Base stations 101-103 communicate with a plurality of mobile stations (MS) 111-114 over Code Division Multiple Access (CDMA) channels, eg, according to the IS-2000-C standard (ie, version C of cdma2000). In the preferred embodiment of the present invention, mobile stations 111-114 are capable of receiv...

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Abstract

A wireless network base station for optimizing the beam width of a downlink traffic beam in real time is provided. The base station includes a transceiver for receiving a pilot strength signal and a power control signal from a mobile station. The base station further includes beam forming circuitry operable to form a downlink traffic beam spatially directed to serve the mobile station having a beam width set as a function of the received pilot strength signal and power control signal.

Description

Background technique [0001] Wireless communication systems have become ubiquitous in society. Businesses and consumers use a wide variety of fixed and mobile wireless terminals, including cellular telephones, pagers, Personal Communications Services (PCS) systems, and fixed wireless access devices such as cellular-enabled vending machines. Wireless service providers are constantly attempting to create new markets and expand existing markets for wireless devices by making wireless devices and services less expensive and more reliable. [0002] For example, in Code Division Multiple Access (CDMA) networks, adaptive antenna arrays have been developed to improve the capacity and quality of calls handled in the CDMA network. In the downlink from the base station to the wireless terminal, the adaptive antenna array utilizes "beamforming" techniques to provide directional antenna beams. For example, angle-of-arrival (AOA) information determined from signals received from an adaptiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B1/38H04B7/005H04B17/00H04M1/00H04W52/08H04W52/22H04W52/24
CPCH04W52/245H04B17/0067H04W52/221H04B17/0057H04W52/08H04B17/24H04B17/318A21C11/18
Inventor 科尼利厄斯·范伦斯伯格珀瓦·R·雷杰科蒂亚
Owner SAMSUNG ELECTRONICS CO LTD
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