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公开(公告)号：WO1997002714A2
公开(公告)日：1997-01-23
申请号：PCT/US1996011063
申请日：1996-06-27
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
Inventor： INTERDIGITAL TECHNOLOGY CORPORATION , LOMP, Gary , OZLUTURK, Fatih , KOWALSKI, John , REGIS, Robert , LUDDY, Michael , MARRA, Alexander , JACQUES, Alexander
IPC: H04Q07/30
CPC classification number: H04B7/2637 , G06F13/374 , H03H17/0226 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70754 , H04B1/70755 , H04B1/70758 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/2628 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/70707 , H04B2201/7071 , H04J13/00 , H04J13/004 , H04J13/0048 , H04J13/0077 , H04J13/10 , H04J13/107 , H04J13/12 , H04J13/16 , H04J2013/0037 , H04L1/0001 , H04L1/004 , H04L1/0042 , H04L1/0047 , H04L1/0054 , H04L1/0059 , H04L5/1446 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04N1/00912 , H04N1/3333 , H04N2201/3335 , H04W52/04 , H04W52/08 , H04W52/143 , H04W52/146 , H04W52/24 , H04W52/241 , H04W52/245 , H04W52/247 , H04W52/26 , H04W52/262 , H04W52/322 , H04W52/325 , H04W52/343 , H04W52/346 , H04W52/36 , H04W52/367 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/54 , H04W52/60 , Y02D10/14
Abstract: A multiple access, spread-spectrum communication system processes a plurality of information signals received by a Radio Carrier Station (RCS) over telecommunication lines for simultaneous transmission over a radio frequency (RF) channel as a code-division-multiplexed (CDM) signal to a group of Subscriber Units (SUs). The RCS receives a call request signal that corresponds to a telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The RCS includes a plurality of Code Division Multiple Access (CDMA) modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an information signal with a message code signal to provide a CDM processed signal. The RCS includes a system channel controller coupled to receive a remote call. An RF transmitter is connected to all of the modems to combine the CDM processed signals with the global pilot code signal to generate a CDM signal. The RF transmitter also modulates a carrier signal with the CDM signal and transmits the modulated carrier signal through an RF communication channel to the SUs. Each SU includes a CDMA modem which is also synchronized to the global pilot signal. The CDMA modem despreads the CDM signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the RCS and the SUs, and system capacity management for maintaining a maximum number of active SUs for improved system performance.
Abstract translation: 多址，扩频通信系统通过电信线处理由无线电载波台（RCS）接收的多个信息信号，以便通过射频（RF）信道作为码分复用（CDM）信号同时传输， 一组用户单位（SU）。 RCS接收对应于电信线信息信号的呼叫请求信号，以及识别用户接收呼叫的用户识别信号。 RCS包括多个码分多址（CDMA）调制解调器，其中之一提供全局导频码信号。 调制解调器提供与全局导频信号同步的消息代码信号。 每个调制解调器将信息信号与消息代码信号组合以提供CDM处理的信号。 RCS包括耦合以接收远程呼叫的系统信道控制器。 RF发射器连接到所有调制解调器，以将CDM处理的信号与全局导频代码信号组合以产生CDM信号。 RF发射机还利用CDM信号调制载波信号，并通过RF通信信道将调制载波信号发送到SU。 每个SU包括也与全局导频信号同步的CDMA调制解调器。 CDMA调制解调器解扩CDM信号并向用户提供解扩信息信号。 该系统包括用于维持RCS和SU的最小系统发射功率水平的闭环功率控制系统，以及用于维持最大数量的主动SU以提高系统性能的系统容量管理。
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公开(公告)号：EP0903016A3
公开(公告)日：2004-09-01
申请号：EP98912922.6
申请日：1998-03-10
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
Inventor： OZLUTURK, Fatih , JACQUES, Alexander , LOMP, Gary , KOWALSKI, John
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Patent Agency Ranking
公开(公告)号：EP1327313B1
公开(公告)日：2004-07-28
申请号：EP01981554.7
申请日：2001-10-12
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
Inventor： JACQUES, Alexander , KAZAKEVICH, Leonid , SILVERBERG, Avi
CPC classification number: H04W52/52 , H03G3/3047
Abstract: In a TDD wireless communication system between transmitters and associated receivers, automatic gain control of a receiver is only applied during the corresponding time slot within the TDD signal time frame architecture. Successive received signal strengths are measured and gain levels are stored as estimates for an initial gain level in future time slots of the TDD signal. Estimating techniques, such as averaging or trending of received signal strength over successive time slots, and averaging or trending of gain level settings, provide improved estimation of future initial gain levels.
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公开(公告)号：EP0903016B1
公开(公告)日：2004-09-08
申请号：EP98912922.6
申请日：1998-03-10
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
Inventor： OZLUTURK, Fatih , JACQUES, Alexander , LOMP, Gary , KOWALSKI, John
CPC classification number: H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70754 , H04B1/70755 , H04B1/70758 , H04B1/708 , H04B1/7085 , H04B1/7093 , H04B1/7103 , H04B1/7115 , H04B1/712 , H04B1/7183 , H04B7/2637 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/7071 , H04J13/00 , H04J13/10 , H04J2013/0037 , H04L1/004 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04W24/08 , H04W28/22 , H04W36/06 , H04W52/0238 , H04W52/04 , H04W52/08 , H04W52/143 , H04W52/146 , H04W52/24 , H04W52/26 , H04W52/322 , H04W52/325 , H04W52/343 , H04W52/346 , H04W52/36 , H04W52/362 , H04W52/367 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/60 , H04W72/0466 , H04W88/021 , H04W88/08 , H04W88/181 , Y02D70/1222 , Y02D70/164 , Y02D70/21 , Y02D70/40 , Y02D70/449
Abstract: The present invention claims a multiple access spread-spectrum communication system for dynamically changing a transmission rate of an information signal received from a remote processing unit (RPU) over a telecommunication line and transmitted to a subscriber through a first spread-spectrum message channel of a plurality of spread spectrum message channels, the system comprising a) a base station, connected to the RPU, which identifies an information signal rate of the respective information signal and provides a modify signal responsive to the information signal rate; comprising: a system channel controller which assigns the information signal and the modify signal to respectively different ones of the plurality of spread-spectrum message channels; first information channel mode modification means connected to the system channel controller and responsive to the modify signal for switching the respective information signal from the first spread-spectrum message channel supporting a first information channel rate to one other pre-determined spread-spectrum message channel, the one other pre-determined spread-spectrum message channel having a different information channel rate supporting the identified information signal rate; and b) a subscriber unit comprising: a first despreading means for recovering the respective information signal and modify signal from the first spread spectrum message channel; second information channel mode modification means responsive to the modify signal for reassigning the first despreading means to a second despreading means which supports the different information channel rate, the second despreading means corresponding to the second spread spectrum message channel.
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公开(公告)号：EP1327313A1
公开(公告)日：2003-07-16
申请号：EP01981554.7
申请日：2001-10-12
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
Inventor： JACQUES, Alexander , KAZAKEVICH, Leonid , SILVERBERG, Avi
CPC classification number: H04W52/52 , H03G3/3047
Abstract: In a TDD wireless communication system between transmitters and associated receivers, automatic gain control of a receiver is only applied during the corresponding time slot within the TDD signal time frame architecture. Successive received signal strengths are measured and gain levels are stored as estimates for an initial gain level in future time slots of the TDD signal. Estimating techniques, such as averaging or trending of received signal strength over successive time slots, and averaging or trending of gain level settings, provide improved estimation of future initial gain levels.
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公开(公告)号：EP0835593B1
公开(公告)日：2002-04-24
申请号：EP96923527.4
申请日：1996-06-27
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
Inventor： LOMP, Gary , OZLUTURK, Fatih , KOWALSKI, John , REGIS, Robert , LUDDY, Michael , MARRA, Alexander , JACQUES, Alexander
IPC: H04Q7/30
CPC classification number: H04B7/2637 , G06F13/374 , H03H17/0226 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70754 , H04B1/70755 , H04B1/70758 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/2628 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/70707 , H04B2201/7071 , H04J13/00 , H04J13/004 , H04J13/0048 , H04J13/0077 , H04J13/10 , H04J13/107 , H04J13/12 , H04J13/16 , H04J2013/0037 , H04L1/0001 , H04L1/004 , H04L1/0042 , H04L1/0047 , H04L1/0054 , H04L1/0059 , H04L5/1446 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04N1/00912 , H04N1/3333 , H04N2201/3335 , H04W52/04 , H04W52/08 , H04W52/143 , H04W52/146 , H04W52/24 , H04W52/241 , H04W52/245 , H04W52/247 , H04W52/26 , H04W52/262 , H04W52/322 , H04W52/325 , H04W52/343 , H04W52/346 , H04W52/36 , H04W52/367 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/54 , H04W52/60 , Y02D10/14
Abstract: A multiple access, spread-spectrum communication system processes a plurality of information signals received by a Radio Carrier Station (RCS) over telecommunication lines for simultaneous transmission over a radio frequency (RF) channel as a code-division-multiplexed (CDM) signal to a group of Subscriber Units (SUs). The RCS receives a call request signal that corresponds to a telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The RCS includes a plurality of Code Division Multiple Access (CDMA) modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an information signal with a message code signal to provide a CDM processed signal. The RCS includes a system channel controller coupled to receive a remote call. An RF transmitter is connected to all of the modems to combine the CDM processed signals with the global pilot code signal to generate a CDM signal. The RF transmitter also modulates a carrier signal with the CDM signal and transmits the modulated carrier signal through an RF communication channel to the SUs. Each SU includes a CDMA modem which is also synchronized to the global pilot signal. The CDMA modem despreads the CDM signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the RCS and the SUs, and system capacity management for maintaining a maximum number of active SUs for improved system performance.
Abstract translation: 多址，扩频通信系统通过电信线路处理由无线电载波台（RCS）接收的多个信息信号，以便通过射频（RF）信道作为码分复用（CDM）信号同时发送到 一组用户单位（SU）。 RCS接收对应于电信线信息信号的呼叫请求信号，以及标识用户接收呼叫的用户识别信号。 RCS包括多个码分多址（CDMA）调制解调器，其中之一提供全局导频码信号。 调制解调器提供与全局导频信号同步的消息代码信号。 每个调制解调器将信息信号与消息代码信号组合以提供CDM处理的信号。 RCS包括耦合以接收远程呼叫的系统信道控制器。 RF发射机连接到所有调制解调器以将CDM处理的信号与全局导频码信号组合以产生CDM信号。 RF发射机还利用CDM信号调制载波信号，并通过RF通信信道将调制载波信号发送到SU。 每个SU包括也与全局导频信号同步的CDMA调制解调器。 CDMA调制解调器解扩CDM信号，并向用户提供解扩信息信号。 该系统包括用于维持RCS和SU的最小系统发射功率级的闭环功率控制系统以及用于维持最大数量的主动SU以提高系统性能的系统容量管理。
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公开(公告)号：EP0835593A2
公开(公告)日：1998-04-15
申请号：EP96923527.0
申请日：1996-06-27
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
Inventor： LOMP, Gary , OZLUTURK, Fatih , KOWALSKI, John , REGIS, Robert , LUDDY, Michael , MARRA, Alexander , JACQUES, Alexander
CPC classification number: H04B7/2637 , G06F13/374 , H03H17/0226 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70754 , H04B1/70755 , H04B1/70758 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/2628 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/70707 , H04B2201/7071 , H04J13/00 , H04J13/004 , H04J13/0048 , H04J13/0077 , H04J13/10 , H04J13/107 , H04J13/12 , H04J13/16 , H04J2013/0037 , H04L1/0001 , H04L1/004 , H04L1/0042 , H04L1/0047 , H04L1/0054 , H04L1/0059 , H04L5/1446 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04N1/00912 , H04N1/3333 , H04N2201/3335 , H04W52/04 , H04W52/08 , H04W52/143 , H04W52/146 , H04W52/24 , H04W52/241 , H04W52/245 , H04W52/247 , H04W52/26 , H04W52/262 , H04W52/322 , H04W52/325 , H04W52/343 , H04W52/346 , H04W52/36 , H04W52/367 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/54 , H04W52/60 , Y02D10/14
Abstract: A multiple access, spread-spectrum communication system processes a plurality of information signals received by a Radio Carrier Station (RCS) over telecommunication lines for simultaneous transmission over a radio frequency (RF) channel as a code-division-multiplexed (CDM) signal to a group of Subscriber Units (SUs). The RCS receives a call request signal that corresponds to a telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The RCS includes a plurality of Code Division Multiple Access (CDMA) modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an information signal with a message code signal to provide a CDM processed signal. The RCS includes a system channel controller coupled to receive a remote call. An RF transmitter is connected to all of the modems to combine the CDM processed signals with the global pilot code signal to generate a CDM signal. The RF transmitter also modulates a carrier signal with the CDM signal and transmits the modulated carrier signal through an RF communication channel to the SUs. Each SU includes a CDMA modem which is also synchronized to the global pilot signal. The CDMA modem despreads the CDM signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the RCS and the SUs, and system capacity management for maintaining a maximum number of active SUs for improved system performance.
Abstract translation: 多址扩频通信系统处理通过电信线路由无线电载波站（RCS）接收的多个信息信号，用于通过射频（RF）信道作为码分多路复用（CDM）信号同时传输到 一组用户单元（SU）。 RCS接收对应于电信线路信息信号的呼叫请求信号和识别用户接收呼叫的用户识别信号。 RCS包括多个码分多址（CDMA）调制解调器，其中一个提供全球导频码信号。 调制解调器提供与全局导频信号同步的消息代码信号。 每个调制解调器将信息信号与消息代码信号组合以提供经CDM处理的信号。 RCS包括一个系统通道控制器，用于接收远程呼叫。 RF发射机连接到所有调制解调器以将CDM处理的信号与全局导频码信号组合以生成CDM信号。 RF发射器还用CDM信号调制载波信号，并通过RF通信信道将调制的载波信号发送给SU。 每个SU包括一个也与全球导频信号同步的CDMA调制解调器。 CDMA调制解调器解扩CDM信号并向用户提供解扩信息信号。 该系统包括用于维持RCS和SU的最小系统发射功率电平的闭环功率控制系统，以及用于维持最大数量的活动SU以提高系统性能的系统容量管理。
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