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1. 发明授权

US06931257B2 Fast forward power control during soft handoff 有权
标题翻译：软切换期间快速功率控制
公开(公告)号：US06931257B2
公开(公告)日：2005-08-16
申请号：US10087368
申请日：2002-03-01
申请人： Reza Shahidi , Nirmal Velayudhan
发明人： Reza Shahidi , Nirmal Velayudhan
IPC分类号： H04B7/005 , H04Q7/20
CPC分类号： H04W52/362 , H04W36/18 , H04W52/143 , H04W52/20 , H04W52/228 , H04W52/40 , H04W88/08
摘要： A wireless communication network includes base stations that operate with variable transmit power adjustments during soft handoff of a mobile station. Base stations adjust current transmit powers up or down using variable step sizes responsive to power control commands from the mobile station. Step size depends on the difference between current transmit power and a common reference power. Generally, power control commands that move transmit power away from the common reference power are attenuated by decreasing the step size, and those that move the transmit power toward the reference power are amplified by increasing step size. A base station controller adjusts the common reference power during soft handoff to reduce differences between it and the current transmit powers. Thus, step size may be large at the outset of soft handoff to quickly reduce transmit power imbalance between base stations, but tends to decrease with subsequent adjustments of the common reference power.
摘要翻译：无线通信网络包括在移动站的软切换期间以可变发射功率调整来操作的基站。基站响应于来自移动台的功率控制命令，使用可变步长来向上或向下调整当前发射功率。步长取决于当前发射功率和公共参考功率之间的差异。通常，将发射功率从公共参考功率移开的功率控制命令通过减小步长而衰减，并且将发射功率向参考功率移动的功率控制命令通过增加步长而被放大。基站控制器在软切换期间调整公共参考功率，以减少它与当前发射功率之间的差异。因此，在软切换开始时，步长可能很大，以快速降低基站之间的发射功率不平衡，但是随着公共参考功率的随后调整而趋于减小。

2. 发明授权

US5809189A Controlled dopant diffusion for fiber optic coupler 失效
标题翻译：光纤耦合器的受控掺杂剂扩散
公开(公告)号：US5809189A
公开(公告)日：1998-09-15
申请号：US523596
申请日：1995-09-05
申请人： Kent A. Murphy , Michael F. Gunther , Angela J. Plante , Veerendra B. Vuppala , Mallika B. Sen , Nirmal Velayudhan , Richard O. Claus
发明人： Kent A. Murphy , Michael F. Gunther , Angela J. Plante , Veerendra B. Vuppala , Mallika B. Sen , Nirmal Velayudhan , Richard O. Claus
IPC分类号： G02B6/28 , G02B6/10
CPC分类号： G02B6/2835 , G02B6/2856
摘要： Uniformity of optical coupling of optical elements such as couplers and splitters is improved by heat treatment which causes dopants in the core of an optical fiber to diffuse into material from the cladding layer of the optical fibers from which the optical element is formed, resulting in a substantially homogeneous interior region of the star coupler or splitter. Increased lossiness of the optical element thus formed may be limited by termination of the heat treatment before dopant diffusion reaches equilibrium throughout the fibers so that a portion of the cladding layer of the fibers remains surrounding the substantially homogeneous region where the fibers have been fused together. Dopant diffusion is constrained to a substantially radial direction in each fiber by uniformity of heating over a region where at least two fibers are twisted together. Thus dopant diffusion is highly repeatable and can be readily regulated to provide highly selective, wavelength-dependent coupling between fibers, particularly for multiplexing and demultiplexing applications.
摘要翻译：通过热处理改善了诸如耦合器和分离器之类的光学元件的光耦合的均匀性，其使得光纤芯中的掺杂剂从形成光学元件的光纤的包覆层扩散到材料中，导致星形耦合器或分离器的基本均匀的内部区域。由此形成的光学元件的增加的损耗可以通过在掺杂剂扩散在整个纤维之间达到平衡之前终止热处理来限制，使得纤维的包层的一部分保持围绕着纤维已经熔合在一起的基本均匀的区域。通过在至少两根纤维被扭绞在一起的区域上的加热均匀性，掺杂剂扩散被限制在每个纤维中基本上径向的方向。因此，掺杂剂扩散是高度可重复的，并且可以容易地调节以提供光纤之间的高选择性，波长依赖性耦合，特别是对于复用和解复用应用。

3. 发明授权

US5448673A Controlled dopant diffusion for fiber optic coupler 失效
标题翻译：光纤耦合器的受控掺杂剂扩散
公开(公告)号：US5448673A
公开(公告)日：1995-09-05
申请号：US106274
申请日：1993-08-12
申请人： Kent A. Murphy , Michael F. Gunther , Angela J. Plante , Veerendra B. Vuppala , Mallika B. Sen , Nirmal Velayudhan , Richard O. Claus
发明人： Kent A. Murphy , Michael F. Gunther , Angela J. Plante , Veerendra B. Vuppala , Mallika B. Sen , Nirmal Velayudhan , Richard O. Claus
IPC分类号： G02B6/28 , G02B6/10
CPC分类号： G02B6/2835 , G02B6/2856
摘要： Uniformity of optical coupling of optical elements such as star couplers and splitters is improved by heat treatment which causes dopants in the core of an optical fiber to diffuse into material from the cladding layer of the optical fibers from which the optical element is formed, resulting in a substantially homogeneous interior region of the star coupler or splitter. Increased lossiness of the optical element thus formed may be limited by termination of the heat treatment before dopant diffusion reaches equilibrium throughout the fibers so that a portion of the cladding layer of the fibers remains surrounding the substantially homogeneous region where the fibers have been fused together.
摘要翻译：通过热处理改善诸如星形耦合器和分离器之类的光学元件的光耦合的均匀性，这使得光纤的芯中的掺杂剂从形成光学元件的光纤的包层扩散到材料中，导致星形耦合器或分离器的基本均匀的内部区域。由此形成的光学元件的增加的损耗可以通过在掺杂剂扩散在整个纤维之间达到平衡之前终止热处理来限制，使得纤维的包层的一部分保持围绕着纤维已经熔合在一起的基本均匀的区域。

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