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

US06282422B1 Radio communication apparatus and method with single receiver 失效
标题翻译：具有单个接收机的无线电通信装置和方法
公开(公告)号：US06282422B1
公开(公告)日：2001-08-28
申请号：US09260518
申请日：1999-03-02
申请人： Hideto Aikawa , Akihiro Shibuya , Youichi Moritani
发明人： Hideto Aikawa , Akihiro Shibuya , Youichi Moritani
IPC分类号： H04Q720
CPC分类号： H04W36/12
摘要： A radio communication apparatus capable of solving a problem involved in a conventional apparatus in that in addition to a first receiver, a second receiver must be provided for establishing synchronization with a contiguous base station, which causes an increase in a circuit scale and consumed power of a mobile station. The present radio communication apparatus switches, when carrying out handoff from the current base station to a contiguous base station, a receiving frequency of a receiver from the frequency of the current base station to that of the contiguous base station, and a counter to be corrected by a synchronization manager from a first counter to a second counter that is used to establish synchronization with the contiguous base station.
摘要翻译：能够解决常规装置中涉及的问题的无线电通信装置，除了第一接收机之外，必须提供第二接收机用于建立与连续基站的同步，这导致电路规模和消耗功率的增加一个移动台。本无线通信装置在从当前的基站到连续的基站进行切换时，切换从当前基站的频率到连续的基站的接收频率，以及要校正的计数器通过同步管理器从第一计数器到第二计数器，用于建立与连续的基站的同步。

2. 发明授权

US06930993B1 TDMA radio communication system, and a base station and subscriber stations for radio communication 失效
标题翻译： TDMA无线电通信系统以及用于无线电通信的基站和用户台
公开(公告)号：US06930993B1
公开(公告)日：2005-08-16
申请号：US09529440
申请日：1998-09-30
申请人： Tomokazu Hamada , Youichi Moritani , Takashi Kawabata , Shuji Ito
发明人： Tomokazu Hamada , Youichi Moritani , Takashi Kawabata , Shuji Ito
IPC分类号： H04W16/04 , H04W16/10 , H04B7/212
CPC分类号： H04W16/04 , H04W16/10
摘要： In a TDMA communication system in which a base station communicates with a plurality of subscriber stations, communication time slots used in a wireless communication are allocated/arranged while avoiding an occurrence of interference.In the case that interference (51) occurs in a communication time slot (411) of a line (71) through which the communication is made from a subscriber station (21) to a base station (1), interference information is registered into an interference time slot database (101) of the base station (1). When the communication time slots are reallocated and rearranged, a TDMA control unit of the base station (1) executes the communication time slot reallocation/rearrangement by referring to information registered in the interference time slot database (101), so that the occurrence of interference is avoided.
摘要翻译：在基站与多个用户站进行通信的TDMA通信系统中，分配/布置在无线通信中使用的通信时隙，同时避免发生干扰。在从用户台（21）向基站（1）进行通信的线路（71）的通信时隙（411）中发生干扰（51）的情况下，将干扰信息登记到基站（1）的干扰时隙数据库（101）。当重新分配通信时隙时，基站（1）的TDMA控制单元通过参考在干扰时隙数据库（101）中登记的信息来执行通信时隙再分配/重排，从而发生干扰被避免。

3. 发明授权

US06873607B1 Interference detection method and an interference avoidance method 失效
标题翻译：干扰检测方法和干扰避免方法
公开(公告)号：US06873607B1
公开(公告)日：2005-03-29
申请号：US09529553
申请日：1998-09-30
申请人： Tomokazu Hamada , Youichi Moritani , Takashi Kawabata , Shuji Ito
发明人： Tomokazu Hamada , Youichi Moritani , Takashi Kawabata , Shuji Ito
IPC分类号： H04B7/04 , H04W16/24 , H04W24/00 , H04W72/08 , H04W74/08 , H04B7/212 , H04B15/00
CPC分类号： H04W74/0866 , H04B7/0491 , H04B17/345 , H04W16/24 , H04W72/082
摘要： In a radio communication system in which multiple access is carried out between a base station and a plurality of subscriber stations by a TDMA communication method, occurrence of the interference in the R channels through which the subscriber stations (21 to 24) issue a call request to the base station (1) can be detected precisely, and time slot arrangement of the R channels is changed by detecting the interference to thus avoid the interference.
摘要翻译：在通过TDMA通信方式在基站与多个用户站之间进行多址接入的无线通信系统中，用户台（21〜24）通过其发送呼叫请求的R信道的干扰出现可以精确地检测到基站（1），并且通过检测干扰来改变R信道的时隙布置，从而避免干扰。

4. 发明授权

US06424645B1 TDMA radio communication system achieving simultaneous assignment of channels to multiple terminal stations 失效
标题翻译： TDMA无线电通信系统实现将信道同时分配给多个终端站
公开(公告)号：US06424645B1
公开(公告)日：2002-07-23
申请号：US09301565
申请日：1999-04-29
申请人： Takashi Kawabata , Youichi Moritani , Tomokazu Hamada , Tohru Sogabe
发明人： Takashi Kawabata , Youichi Moritani , Tomokazu Hamada , Tohru Sogabe
IPC分类号： H04B7212
CPC分类号： H04B7/2656 , H04W72/042
摘要： A TDMA radio communication method including the steps of: providing a latter part of each of super frames with an assignment information notification period which is preceded by an assignment processing period, and providing a remaining part of the each of the super frame with an assignment request collecting period; transmitting, from a terminal station to a base station, assignment request information using a plurality of frames included in the assignment request collecting period; transmitting, from the base station to the terminal station, frame structure information and assignment information over a plurality of frames included in the assignment information notification period; and carrying out, in the base station, channel assignment of a radio channel, changes of the frame structure and of the channel assignment in response to timings of the super frames. This makes it possible to solve a problem involved in a conventional TDMA radio communication system in that it is difficult for the base station to achieve reassignment of channels to a plurality of terminal stations at the same time with considering the entire terminal stations connected to the base station because the conventional system carries out channel assignment, changes of the assignment and reassignment individually to the terminal stations.
摘要翻译：一种TDMA无线电通信方法，包括以下步骤：提供每个超帧的后半部分，其中分配信息通知周期在分配处理周期之前，并且提供每个超帧的剩余部分具有分配请求收集期使用包括在分配请求收集期间的多个帧从终端向基站发送分配请求信息; 从所述基站向所述终端站发送包括在所述分配信息通知期间的多个帧的帧结构信息和分配信息; 并且在基站中，响应于超帧的定时，在无线电信道中进行信道分配，帧结构和信道分配的改变。这使得可以解决常规TDMA无线电通信系统中涉及的问题，因为考虑到连接到基站的整个终端站，基站难以同时实现向多个终端站重新分配信道因为常规系统执行信道分配，分配的改变和重新分配到终端站。

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