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Forming spatial beams within a cell segment

A space beam and segment technology, applied in advanced technology, sustainable buildings, diversity/multi-antenna systems, etc., can solve unrealistic problems

Inactive Publication Date: 2010-11-10
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, motion tracking is associated with relatively large overhead and complexity
Furthermore, it may not be possible or practical to perform movement tracking on mobile stations moving at relatively high speeds

Method used

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  • Forming spatial beams within a cell segment
  • Forming spatial beams within a cell segment
  • Forming spatial beams within a cell segment

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Embodiment Construction

[0019] In the following description, numerous details are set forth to provide an understanding of some embodiments. However, it will be understood by those skilled in the art that some embodiments may be practiced without these details and that many variations and modifications from the described embodiments are possible.

[0020] According to some preferred embodiments, "opportunistic" space time multiple access (OSTMA) techniques are provided for use in wireless communication networks. OSTMA technology enables the formation of multiple spatial beams in a cell segment (cell or cell sector), where at least some of the multiple spatial beams of a cell segment are associated with different power levels to provide different coverage. In addition, the OSTMA technology defines a scanning pattern of beams within a cell segment, where the scanning pattern can be a fixed scanning pattern or a dynamic scanning pattern. A "spatial beam" (or, more simply, a "beam") refers to a geograp...

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Abstract

To perform wireless communications in a wireless network, at least two spatial beams are formed within a cell segment, where the at least two spatial beams are associated with different power levels. The at least two spatial beams are swept across the cell segment according to a sweep pattern. In some implementations, multiple antenna assemblies can be used, where each antenna assembly has plural antenna elements. A lower one of the antenna assemblies can be used to form high and lower power beams, and an upper one of the antenna assemblies can be used to communicate backhaul information, for example.

Description

technical field [0001] The present invention generally relates to forming spatial beams within a cell segment. Background technique [0002] A wireless communication network is typically divided into cells, each cell is further divided into cell sectors. A base station is provided in each cell to enable wireless communication with mobile stations located within the cell. [0003] To further sectorize cell sectors, beamforming schemes have been implemented, such as Orthogonal Frequency Division Multiple Access (OFDMA) systems. The beamforming scheme refers to forming multiple spatial beams within a cell sector to divide the cell sector into different coverage areas. A mobile station may communicate with a base station using one or more of these spatial beams. [0004] One type of beamforming scheme is an adaptive beamforming scheme that dynamically steers beams towards the mobile station location. Such adaptive beamforming schemes require mobile tracking, where the positi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/02
CPCH04B7/0408Y02B60/50H04B7/0695Y02D30/70
Inventor Y·宋G·吴J·李N·王K·西万桑S·-Y·金R·胡D·帕兰希奇L·-K·狄
Owner APPLE INC