Device for fixing the duration of waiting periods between attempts to establish a connection between a terminal and a mobile radio system

• US 5,465,394 A
• Filed: 12/15/1993
• Issued: 11/07/1995
• Est. Priority Date: 12/16/1992
• Status: Expired due to Fees

• Current Assignee: Alcatel Radiotelephone (Nokia Corporation)
• Original Assignee: Alcatel Radiotelephone (Nokia Corporation)
• Inventors: Pinault, Francis, Jouin, Christophe
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): TO, DORIS HA
• Application Number:
  US08/166,958
• Time in Patent Office: 692 Days
• Field of Search: 455/343, 455/38.3, 455/127, 455/54.1, 455/126, 455/34.1, 455/34.2, 455/33.1, 455/54.2, 379/59, 379/58
• US Class Current: 455/517
• CPC Class Codes: H04W 52/0261 managing power supply demand, e.g. depending on battery level
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A device for seeking a connection between a terminal and a mobile radio system includes a synchronization unit for establishing in response to a control signal if the connection can be achieved and a time-delay unit for producing, after an initial period, the control signal after a first waiting period. The time-delay unit produces the control signal again after a second waiting period if it is established that the connection cannot be achieved after the first waiting period. The time-delay unit fixes the duration of the second waiting period so that it is greater than that of the first waiting period. If the device is implemented in a terminal having a battery whose capacity is represented by a capacity indicator, the time-delay unit fixes at least one of the waiting periods according to the capacity indicator.

Claims

1. Device for seeking a connection between a terminal and a mobile radio system comprising a synchronization unit for determining, in response to a control signal, whether said connection can be achieved and a time-delay unit for producing, after an initial period, said control signal after a first waiting period, said time-delay unit producing said control signal again after a second waiting period if said synchronization unit determines that said connection cannot be achieved after said first waiting period, said time delay unit further comprising means for fixing a duration of said second waiting period so that it is greater than that of said first waiting period, wherein said device is implemented in said terminal having a battery whose capacity is represented by capacity information held in said time-delay unit, and said time-delay unit comprises means for fixing at least one of said first and second waiting periods according to said capacity information.

2. Device according to claim 1 wherein said time delay unit produces said control signal continuously during said initial period.

3. Device according to claim 1 wherein said time-delay unit further comprises means for limiting said waiting periods to a predetermined maximum duration according to said capacity information.

4. Device according to claim 3 wherein said time-delay unit comprises means for fixing said maximum duration according to said capacity information.

5. Device according to claim 1 wherein said time-delay unit calculates the duration of said second waiting period by multiplying that of said first waiting period by a predetermined coefficient said predetermined coefficient being fixed according to said capacity information.

6. Device according to claim 1 wherein said synchronization unit carries out a predetermined number of power measurement cycles on all channels transmitted by said mobile radio system and said time-delay unit fixes said number of cycles according to said capacity information.