公开(公告)号：AU5824701A

公开(公告)日：2001-08-20

申请号：AU5824701

申请日：2001-02-09

Applicant: MOTOROLA INC

Inventor： HUGHES JOHN ,  KADIR TIMOR

IPC: H04N7/16 ,  H04N7/18 ,  H04N7/24 ,  H04N19/89 ,  H04N5/00 ,  H04N7/173

Abstract: Apparatus for video distribution to receiving units (6) over a network N. The apparatus comprises a distribution unit (4) at which video signals are compressed for transmission using intraframe and interframe coding, and at least one intermediate unit (10) disposed in a signal path between the distribution unit (4) and one or more receiving units (6). The intermediate unit (10) is arranged for storing intraframe coded signals and supplying such stored signals to one or more receiving units (6) when predetermined conditions are satisfied.

公开(公告)号：AU1608101A

公开(公告)日：2001-06-12

申请号：AU1608101

申请日：2000-11-14

Applicant: MOTOROLA INC

Inventor： JAKOBSEN KEN ,  AVERBUCH ROD ,  HUGHES JOHN ,  CRISLER KENNETH JAMES ,  ROMANO GUY GEORGE

IPC: H04L12/28 ,  H04L12/46 ,  H04L12/56 ,  H04W8/00 ,  H04Q7/22

Abstract: A cellular radio communications system comprises: at least one base station for broadcasting radio signals to mobile stations within a cell; a mobile station addressable using IP addresses; and a first controller in the cell of the cellular radio communications system, the first controller being adapted: (i) to receive a request from the mobile station that the cellular radio communication system assign to the mobile station the static IP address previously assigned to the mobile station outside of the cell; (ii) in response to the request from the mobile station, to check with a second controller associated with the location where the mobile station was previously registered that the static IP address has not been assigned to another mobile station; and (iii) to assign the static IP address previously assigned to the mobile station, outside of the cell, to the mobile station for use in the cell, if the static IP address has not been assigned to another mobile station. Alternatively, the first controller may perform the check for availability of the static IP address with a controller associated with the location where the static IP address is registered. The invention also comprises methods of mobile station registration in cellular radio communication systems. The invention enables roaming by a mobile station between cellular systems which are under the control of different Software and Measurement Infrastructures. Mobile stations may be adapted to check one or more timers prior to making the static IP address request.