公开(公告)号：US5555260A

公开(公告)日：1996-09-10

申请号：US519016

申请日：1995-08-24

Applicant: Hans L. Rinnback ,  Hakan M. Halen ,  Per V. Israelsson

Inventor： Hans L. Rinnback ,  Hakan M. Halen ,  Per V. Israelsson

IPC: H04B7/26 ,  H04J3/16 ,  H04Q11/04 ,  H04W88/08 ,  H04B7/24

CPC classification number: H04Q11/0435 ,  H04J3/1635 ,  H04J3/1688 ,  H04W88/085

Abstract: A TDMA cellular mobile radio system has at least one network control unit, at least one radio transceiver, and at least one multiplexor for multiplexing and demultiplexing digitally encoded and compressed speech data transmitted between the network control unit and radio transceiver. The bandwidth of the speech data is reduced through compression. The bandwidth of the speech data required on a radio transceiver side of the multiplexor is further reduced by buffering the speech data arriving at the multiplexor at a relatively high modulation rate, retransmitting the buffered speech data at a relatively lower modulation rate, buffering the speech data arriving from the multiplexor at a relatively lower modulation rate, and retransmitting the buffered speech data at a relatively higher modulation rate.

Abstract translation: TDMA蜂窝移动无线电系统具有至少一个网络控制单元，至少一个无线电收发器和用于在网络控制单元和无线电收发器之间传输的数字编码和压缩语音数据的多路复用和解复用的至少一个多路复用器。 通过压缩减少语音数据的带宽。 通过以相对较高的调制速率缓冲到达多路复用器的语音数据，进一步减少多路复用器的无线电收发机侧所需的语音数据的带宽，以相对较低的调制速率重传缓冲语音数据，缓冲语音数据 以相对较低的调制速率从多路复用器到达，并且以相对更高的调制速率重传缓冲的语音数据。

公开(公告)号：US5293643A

公开(公告)日：1994-03-08

申请号：US673592

申请日：1991-03-22

Applicant: Per V. Israelsson

Inventor： Per V. Israelsson

IPC: H04W36/08 ,  H04W36/30 ,  H04W36/38 ,  H04B7/26

CPC classification number: H04W36/32

Abstract: The invention relates to a method in connection with handoff from a first base station in a mobile radio communication system, in which method the signal strengths from a set of base stations surrounding a mobile station are measured in the latter. When handoff is considered to be motivated, the signal strength vector formed by the measured signal strengths is correlated with stored characteristic signal strength vectors associated with the first base station. If the correlation between measured signal strength vector and one of said stored characteristic signal strength vectors exceeds a predetermined correlation level, handoff is commanded to a predetermined second base station in the set having acceptable but not the highest signal strength in the measured signal strength vector, or is the handoff procedure interrupted and the connection between the mobile station and the first base station maintained.

Abstract translation: 本发明涉及一种与移动无线电通信系统中的第一基站切换相关的方法，其中在后者中测量来自移动台周围的一组基站的信号强度。 当切换被认为是被激励时，由测量的信号强度形成的信号强度矢量与存储的与第一基站相关联的特征信号强度向量相关。 如果测量信号强度矢量与所存储的特征信号强度矢量之一之间的相关性超过预定的相关电平，则在所测量的信号强度向量中具有可接受但不是最高信号强度的集合中的预定第二基站被命令切换， 或者切换过程中断，并且维护移动台与第一基站之间的连接。

公开(公告)号：US5479595A

公开(公告)日：1995-12-26

申请号：US714566

申请日：1991-06-13

Applicant: Per V. Israelsson

Inventor： Per V. Israelsson

IPC: H04B10/00 ,  H04B10/22 ,  H04W16/00 ,  H04W88/10

CPC classification number: H04W16/00 ,  H04B10/112 ,  H04W88/10

Abstract: A mobile telephony system intended for use by outdoor subscribers, for instance in cars, while affording, at the same time, high traffic capacity and relatively disturbance-free speech transmission to subscribers located within a building, for instance an office building. Signal transmission between mobile stations (MS, MSI) and base stations (BS1, BSI) is effected with radio waves in a first part-system (7), for instance intended for telephony traffic via car telephones, and with light, at least in the area nearest the mobile stations (MSI), in a second part-system (6) intended, for instance, for an office building. Signal transmission with light can also be effected in areas that contain electronic apparatus which is sensitive to radio disturbances, for instance in hospitals and/or in areas in which strong radio disturbances capable of preventing mobile telephony transmission with radio waves occur. Certain mobile stations may be capable of being switched between signal transmission with radio waves and signal transmission with light, which enables these stations to be used in both part-systems (7, 6).

Abstract translation: 一种旨在由户外用户（例如在汽车中）使用的移动电话系统，同时为建筑物内的用户（例如办公楼）提供高流量和相对无干扰的语音传输。 移动站（MS，MSI）和基站（BS1，BSI）之间的信号在第一部分系统（7）中用无线电波进行，例如用于经由汽车电话的电话业务，并且至少在 最接近移动台（MSI）的区域，例如用于办公楼的第二部分系统（6）中。 具有光的信号传输也可以在包含对无线电干扰敏感的电子设备的区域中实现，例如在医院和/或能够用无线电波阻止移动电话传输的强无线电干扰的区域中进行。 某些移动站可以能够在具有无线电波的信号传输和用光的信号传输之间切换，这使得这些站能够在两个系统（7,6）中使用。