Back to results
US 8,046,005 B2Granted
Dual event slotted paging
AssigneeQUALCOMM Incorporated
InventorsBrian K. Butler, Klein S. Gilhousen
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeQUALCOMM Incorporated
InventorsBrian K. Butler, Klein S. Gilhousen
Estimating the term…
A novel and improved method and system for paging a cellular telephone or other wireless terminal using two paging channels that reduces standby mode power consumption described. In one embodiment of the invention, a minimally encoded quick paging channel is established over which short, quick page messages are transmitted during one of a set of quick paging slots. The quick page message indicates that a communications request has been received, and that the receiving communication terminals should process a highly encoded full paging channel over which more detailed, full page messages are transmitted during the next full paging slot. A terminal monitors full paging channel only after a quick page message has been received on the quick paging channel.
A method for paging a wireless terminal in a wireless communication system comprising:
A method for paging a wireless terminal in a wireless communication system comprising:
A wireless terminal, comprising:
A wireless terminal, comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
User notification
Characterised by the adaptation strategy: where the mode-switching is based on Quality of Service requirement
Characterised by the signalling: transmission of mode-switching indication
Managed by the network, e.g. network or access point is leader and terminal is follower: using a pre-established activity schedule, e.g. traffic…
Term ended 13 Jun 2019 (estimated)
I. Field of the Invention
The present invention relates to wireless telecommunications. More particularly, the present invention relates to a novel and improved method and apparatus for paging a cellular telephone or other wireless communications device.
II. Description of the Related Art
The features, objects, and advantages of the present invention will become more apparent from the detailed description set forth below when taken in conjunction with the drawings in which like reference characters identify correspondingly throughout and wherein:
FIG. 1 is a block diagram of a cellular telephone system;
FIG. 2 is a timing diagram illustrating the timing slots in the quick paging channel and the full paging channel;
A method and system for paging a cellular telephone or other wireless terminal that reduces standby mode power consumption is described. In the following description the invention is set forth in the context of a cellular telephone system operating substantially in accordance with the IS-95 standard. While the invention is particularly suited for operation in such an environment, many other digital communication systems can benefit from the use of the present invention, including TDMA based wireless communication systems, satellite based communication system, and wireline systems over which encoded signaling is transmitted.
FIG. 1 is a block diagram of a highly simplified cellular telephone system configured in accordance with the use of the present invention. Wireless terminals 10 (typically cellular telephones) are located among base stations 12. Wireless terminals 10a and 10b are in active mode and therefore are interfacing with one or more base stations 12 using radio frequency (RF) signals modulated in accordance with the CDMA signal processing techniques of the IS-95 standard. A system and method for processing RF signals substantially in accordance with the use of the IS-95 standard is described in U.S. Pat. No. 5,103,459 entitled “System and Method for Generating Signal Waveforms in a CDMA Cellular Telephone System” assigned to the assignee of the present invention and incorporated herein by reference ('459 patent). The other wireless terminals 10 are in standby mode and therefore monitoring for page messages indicating a request to communicate.
In the preferred embodiment of the invention, each base station generates a forward link signals comprised of a set of forward link channels. The channels are established by a set of orthogonal 64 chip (or bit) Walsh codes, each of which is used to modulate the data associated with a particular channel. The channels are categorized by function and include a pilot channel over which a phase offset pattern is repeatedly transmitted, a synch channel over which synchronization data is transmitted including the absolute system time and the phase offset of the associated pilot channel, and traffic channels over which the data directed to the terminals are transmitted. The traffic channels are normally assigned to transmit data to a particular wireless terminal 10 for the duration of the interface with that particular base station.