专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5436956A Method and arrangement for reducing the number of handoff requests in a cellular mobile communications system 失效
标题翻译：用于减少蜂窝移动通信系统中切换请求数量的方法和装置
公开(公告)号：US5436956A
公开(公告)日：1995-07-25
申请号：US92893
申请日：1993-07-19
申请人： Hirofumi Shiotsuki , Eiki Katsuoka
发明人： Hirofumi Shiotsuki , Eiki Katsuoka
IPC分类号： H04B7/26 , H04W36/30 , H04Q7/22
CPC分类号： H04W36/30
摘要： In order to effectively control a time interval of issuing a handoff request from a land site in a mobile communications system, a strength of a signal which is transmitted from a mobile unit located in a service area of said land site, is measured at the land side. A level crossing rate is measured based on the signal transmitted from the mobile unit. A first handoff request is generated if the signal strength falls below a predetermined handoff threshold. Following this, a timer is rendered active for counting an elapsed time after the first handoff request is generated. If the signal strength is detected below the predetermined handoff threshold, a time interval is determined based on the level crossing rate. The relationship between the time interval and the level crossing rate has been previously determined. Thereafter, a second handoff request is generated if the time interval determined in the above exceeds the elapsed time. subsequently, the timer is reset and then the above operations are repeated.
摘要翻译：为了有效地控制从移动通信系统中的陆地站点发出切换请求的时间间隔，在位于陆地的服务区域中的移动单元发送的信号的强度在陆地上测量侧。基于从移动单元发送的信号来测量电平穿越率。如果信号强度低于预定切换阈值，则产生第一越区切换请求。此后，定时器被激活以对生成第一切换请求之后的经过时间进行计数。如果检测到信号强度低于预定切换阈值，则基于等级穿越速率来确定时间间隔。事先确定了时间间隔与水平穿越率之间的关系。此后，如果在上述确定的时间间隔超过经过时间，则产生第二越区切换请求。随后定时器复位，然后重复上述操作。

2. 发明授权

US5095530A Radio telephone system switching control capability of control channels 失效
标题翻译：无线电话系统控制通道的切换控制能力
公开(公告)号：US5095530A
公开(公告)日：1992-03-10
申请号：US421902
申请日：1989-10-16
申请人： Shoji Tanaka , Hirofumi Shiotsuki , Eiki Katsuoka
发明人： Shoji Tanaka , Hirofumi Shiotsuki , Eiki Katsuoka
IPC分类号： H04W68/00 , H04W74/00
CPC分类号： H04W74/00 , H04W68/00
摘要： A radio telephone switching control system having control channels which transmit/receive control data betweeen a plurality of movable terminals and a radio base station. The control channels include a mono-functional channel for access which is dedicated to access during data transmission/receiving by calling from the terminals. The control channel also includes a bi-functional channel for paging and access usable as a channel for paging one of the terminals as well as for access. The system contains a base station with a fault detector. Only one kind of control channel information is broadcast in the same service zone. All of the movable stations existing in same service zone scan the first or second range to decide the channel for access or paging according to the received control channel information. The system also sets the mono-functional channel for access and the bi-functional channel for paging and access, when a fault is not detected. Once a fault is detected, the second range is separated from the first range, whereby the mono-functional channel for paging is used only to transmit data for paging from the base station and the mono-functional channel for access is used to transmit/receive data related to actions other than paging to the terminals.
摘要翻译：一种无线电话切换控制系统，具有控制信道，该控制信道在多个可移动终端与无线基站之间发送/接收控制数据。控制信道包括用于接入的单功能信道，其专用于通过从终端呼叫进行数据发送/接收期间的接入。控制信道还包括用于寻呼和接入的双功能信道，可用作寻呼一个终端以及用于接入的信道。该系统包含一个带故障检测器的基站。只有一种控制信道信息在同一个业务区域广播。存在于同一服务区域的所有可移动站根据接收到的控制信道信息扫描第一或第二范围以决定接入或寻呼信道。当未检测到故障时，系统还设置用于访问的单功能通道和用于寻呼和访问的双功能通道。一旦检测到故障，第二范围与第一范围分离，由此用于寻呼的单功能信道仅用于从基站发送用于寻呼的数据，并且用于接入的单功能信道用于发送/接收与除终端之外的动作相关的数据。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式