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    • 2. 发明授权
    • Method and system for providing a handoff from a CDMA cellular telephone
system
    • 用于从CDMA蜂窝电话系统提供切换的方法和系统
    • US6035197A
    • 2000-03-07
    • US366352
    • 1994-12-29
    • Michael HabermanGlenn Pierson
    • Michael HabermanGlenn Pierson
    • H04W36/14H04W36/30H04W56/00H04Q7/20
    • H04W36/0066H04W36/30H04W48/12H04W56/00
    • A mobile assisted handoff of a mobile station transitioning from a CDMA portion of a cellular telecommunication network to an analog portion of the network is provided as a function of a CDMA pilot signal transmitter located at each analog cell in the analog portion of the network. The mobile station monitors a CDMA pilot signal transmitted from each CDMA cell and each analog cell of the cellular telecommunication network, measures the signal strength of each received CDMA pilot signal and transmits the signal strength to the MTSO. The MTSO determines whether the pilot signal is associated with a CDMA base station or an analog base station. When the mobile station receives a pilot signal from an analog cell whose signal strength is above a first predetermined threshold and the received signal strengths of all pilot signals of the CDMA base stations with which the mobile station is currently in communication are below a second predetermined threshold, the MTSO directs a CDMA to analog handoff message to the mobile station.
    • 提供了从蜂窝电信网络的CDMA部分转移到网络的模拟部分的移动台的移动辅助切换作为位于网络的模拟部分中的每个模拟小区处的CDMA导频信号发射机的功能。 移动台监视从每个CDMA小区和蜂窝电信网络的每个模拟小区发送的CDMA导频信号,测量每个接收到的CDMA导频信号的信号强度,并向MTSO发送信号强度。 MTSO确定导频信号是否与CDMA基站或模拟基站相关联。 当移动站从信号强度大于第一预定阈值的模拟小区接收导频信号,并且移动台当前正在通信的CDMA基站的所有导频信号的接收信号强度低于第二预定阈值 ,MTSO将CDMA转发到模拟切换消息给移动台。
    • 8. 发明授权
    • Aqueous displacement fluid compositions for use in wellbores
    • 用于井筒的含水置换液组合物
    • US6063737A
    • 2000-05-16
    • US874062
    • 1997-06-12
    • Leonard Michael HabermanJames Jang Woo Nahm
    • Leonard Michael HabermanJames Jang Woo Nahm
    • C09K8/42C09K3/00E21B21/00E21B33/13
    • C09K8/424Y10S507/928
    • An aqueous displacement fluid composition is used as a spacer fluid composition to change one type of drilling mud for another type of drilling mud or in cementing operations downhole, to clean downhole hardware in wellbores. The method comprises introducing into a wellbore an aqueous displacement fluid composition, such as a spacer fluid, to displace downhole wellbore fluids, having an improved rate of emulsification and a high capacity for emulsifying hydrocarbons, and aqueous fluid compositions. The aqueous displacement fluid composition introduced into wellbores contain mixtures of:a) water;b) a polyoxyalkylene monool surfactant represented by the formula: ##STR1## wherein R.sub.1 is a hydrocarbyl group, R.sub.2 is a C.sub.1 -C.sub.3 alkyl group, and the weight average of w+x is at least about 5; andc) a polyoxyalkylene monool surfactant represented by the formula: ##STR2## wherein R.sub.1 is a hydrocarbyl group, R.sub.2 is a C.sub.1 -C.sub.3 alkyl group, and the weight average of y+z is about 1 to about 4. Preferably, x and z are zero.
    • 使用含水置换流体组合物作为间隔液流体组合物,以改变另一种类型的钻井泥浆的钻井泥浆或在井下的固井操作中,以清洁井筒中的井下硬件。 该方法包括向井眼中引入含水置换流体组合物,例如间隔液,以置换井下井筒流体,具有改善的乳化速率和高的乳化烃的能力以及含水流体组合物。 引入井筒的含水置换液组合物含有以下混合物:a)水; b)由下式表示的聚氧化烯一元醇表面活性剂:其中R1是烃基,R2是C1-C3烷基,w + x的重均分子为至少约5; 和c)由下式表示的聚氧化烯一元醇表面活性剂:其中R 1是烃基,R 2是C 1 -C 3烷基,y + z的重均分子约为1至约4.优选地,x和z为零 。
    • 9. 发明授权
    • Method and system for providing a handoff from a CDMA cellular telephone system
    • 用于从CDMA蜂窝电话系统提供切换的方法和系统
    • US06240292B1
    • 2001-05-29
    • US09447433
    • 1999-11-23
    • Michael HabermanGlenn Pierson
    • Michael HabermanGlenn Pierson
    • H04Q720
    • H04W36/0066H04W36/30H04W48/12H04W56/00
    • A mobile assisted handoff of a mobile station transitioning from a CDMA portion of a cellular telecommunication network to an analog portion of the network is provided as a function of a CDMA pilot signal transmitter located at each analog cell in the analog portion of the network. The mobile station monitors a CDMA pilot signal transmitted from each CDMA cell and each analog cell of the cellular telecommunication network, measures the signal strength of each received CDMA pilot signal and transmits the signal strength to the MTSO. The MTSO determines whether the pilot signal is associated with a CDMA base station or an analog base station. When the mobile station receives a pilot signal from an analog cell whose signal strength is above a first predetermined threshold and the received signal strengths of all pilot signals of the CDMA base stations with which the mobile station is currently in communication are below a second predetermined threshold, the MTSO directs a CDMA to analog handoff message to the mobile station.
    • 提供了从蜂窝电信网络的CDMA部分转移到网络的模拟部分的移动台的移动辅助切换作为位于网络的模拟部分中的每个模拟小区处的CDMA导频信号发射机的功能。 移动台监视从每个CDMA小区和蜂窝电信网络的每个模拟小区发送的CDMA导频信号,测量每个接收到的CDMA导频信号的信号强度,并向MTSO发送信号强度。 MTSO确定导频信号是否与CDMA基站或模拟基站相关联。 当移动站从信号强度大于第一预定阈值的模拟小区接收导频信号,并且移动台当前正在通信的CDMA基站的所有导频信号的接收信号强度低于第二预定阈值 ,MTSO将CDMA转发到模拟切换消息给移动台。