公开(公告)号：US5890069A

公开(公告)日：1999-03-30

申请号：US593984

申请日：1996-01-30

申请人： James Gifford Evans ,  Diane Z. Lehder ,  Gregory Panagopoulos

发明人： James Gifford Evans ,  Diane Z. Lehder ,  Gregory Panagopoulos

IPC分类号： H04M1/733 ,  H04W36/08 ,  H04W84/16 ,  H04Q7/38

CPC分类号： H04M1/733

摘要： A cordless telephone system is arranged for extending the operating range of a cordless telephone portable unit within such system. The cordless telephone system comprises a plurality of cordless telephone stations that are connected to a plurality of intrapremises telephone wire-pairs and support independent simultaneous telephone calls without interference. Each cordless telephone station consists of a cordless telephone base unit and its associated cordless telephone portable unit. Although each of the portable units is associated with a particular base unit, all of the portable units are able to operate with any of the base units in the system. As a user of a portable unit with a call in progress roams about a premises, all base units monitor the quality of the radio frequency signal received from the portable unit. If the signal quality of a base unit actively communicating with the portable unit deteriorates to below an acceptable level, control apparatus in the system identifies another base unit and executes a hand-off of the communication link with the portable unit to this base unit that is then receiving the signal from the handset unit with an acceptable signal quality. Operational control for the base units is provided through a time division multiple access arrangement wherein a communications channel is imposed on one of the plurality of intrapremises telephone wire-pairs in a band above the audio frequency band normally used for standard telephone service.

摘要翻译： 无线电话系统被布置成用于在这种系统内扩展无绳电话便携式单元的操作范围。 无绳电话系统包括多个无绳电话站，其连接到多个突发电话线对并且支持独立的同时电话呼叫而不受干扰。 每个无绳电话站由无绳电话基座单元及其相关的无绳电话便携式单元组成。 虽然每个便携式单元与特定的基本单元相关联，但是所有便携式单元都能够与系统中的任何基本单元一起操作。 作为正在进行呼叫的便携式单元的用户漫游有关场所，所有基地单元监视从便携式单元接收的射频信号的质量。 如果与便携式装置主动通信的基本单元的信号质量恶化到可接受的水平以下，则系统中的控制装置识别另一个基本单元，并且执行与便携式单元的通信链路的切换到该基本单元 然后以可接受的信号质量从手机单元接收信号。 通过时分多址方式提供基站的操作控制，其中通信信道被施加在通常用于标准电话业务的音频频带之上的频带中的多个突发间电话线对中的一个上。

公开(公告)号：US5513248A

公开(公告)日：1996-04-30

申请号：US258353

申请日：1994-06-10

申请人： James G. Evans ,  Diane Z. Lehder ,  Gregory Panagopoulos

发明人： James G. Evans ,  Diane Z. Lehder ,  Gregory Panagopoulos

IPC分类号： H04M1/733 ,  H04W36/08 ,  H04W84/16 ,  H04Q7/20

CPC分类号： H04M1/733 ,  H04W84/16

摘要： A cordless telephone system is arranged for extending the operating range of a cordless telephone portable unit within such system. The cordless telephone system comprises a plurality of cordless telephone stations that plug into any available wall telephone jack and may share the intrapremises telephone wire-pair with one or more existing corded telephone stations without interference. Each cordless telephone station consists of a cordless telephone base unit and its associated cordless telephone portable unit. Although each of the portable units is associated with a particular base unit, all of the portable units are able to operate with any of the base units in the system. As a user of a portable unit with a call in progress roams about a premises, all base units monitor the quality of the radio frequency signal received from the portable unit. If the signal quality of a base unit actively communicating with the portable unit deteriorates to below an acceptable level, control apparatus in the system identifies another base unit and executes a hand-off of the communication link with the portable unit to this base unit that is then receiving the signal from the handset unit with an acceptable signal quality. Operational control for the base units is provided through a time division multiple access arrangement wherein a communications channel is imposed on the existing premises telephone wire-pair above the audio frequency band used for standard telephone service.

摘要翻译： 无线电话系统被布置成用于在这种系统内扩展无绳电话便携式单元的操作范围。 无绳电话系统包括多个无绳电话站，其插入任何可用的墙壁电话插孔，并且可以与一个或多个现有的有线电话台共享不间断的电话线对而不受干扰。 每个无绳电话站由无绳电话基座单元及其相关的无绳电话便携式单元组成。 虽然每个便携式单元与特定的基本单元相关联，但是所有便携式单元都能够与系统中的任何基本单元一起操作。 作为正在进行呼叫的便携式单元的用户漫游有关场所，所有基地单元监视从便携式单元接收的射频信号的质量。 如果与便携式装置主动通信的基本单元的信号质量恶化到可接受的水平以下，则系统中的控制装置识别另一个基本单元，并且执行与便携式单元的通信链路的切换到该基本单元 然后以可接受的信号质量从手机单元接收信号。 通过时分多址方式提供基站的操作控制，其中通信信道被施加在用于标准电话业务的音频频带之上的现有住宅电话线对上。