Methods and apparatus for robust slotted mode operation in fading wireless environments

At least one processor configured to provide for slotted mode operation of a wireless communication device, comprising at least one hardware module for:

• determining an occurrence of a network system loss event;
• providing for slotted mode operation upon determining the network system loss event, wherein the slotted mode operation is an operation during which the wireless communication device periodically wakes to receive any paging signals and attempts to acquire an active set pilot from the network system during an initial slotted mode wake-up and one or more additional slotted mode wake-ups;
• providing for a system acquisition state only if the slotted mode operation fails to acquire the active set pilot from the network system;
• and
• bypassing the slotted mode operation and providing for the system acquisition state after determining the network system loss event if a condition is met.

A computer program product, comprising:

• a non-transitory computer-readable medium comprising:
• a first set of codes for causing a computer to determine an occurrence of a network system loss event;
• a second set of codes for causing the computer to provide for slotted mode operation upon determining the network system loss event, wherein the slotted mode operation is an operation during which the wireless communication device periodically wakes to receive any paging signals and attempts to acquire an active set pilot from the network system during an initial slotted mode wake-up and one or more additional slotted mode wake-ups;
• a third set of codes for causing the computer to provide for a system acquisition state only if the slotted mode operation fails to acquire the active set pilot from the network system;
• and
• a fourth set of codes for causing the computer to bypass the slotted mode operation and providing for the system acquisition state after determining the network system loss event if a condition is met.

An apparatus, comprising:

• means for determining an occurrence of a network system loss event;
• means for providing for slotted mode operation upon determining the network system loss event, wherein the slotted mode operation is an operation during which the wireless communication device periodically wakes to receive any paging signals and attempts to acquire an active set pilot from the network system during an initial slotted mode wake-up and one or more additional slotted mode wake-ups;
• means for providing for a system acquisition state only if the slotted mode operation fails to acquire the active set pilot from the network system;
• and
• means for bypassing the slotted mode operation and providing for the system acquisition state after determining the network system loss event if a condition is met.

A wireless communication device, comprising:

• a computer platform including a processor and a memory in communication with the processor;
• a slotted mode module stored in the memory and in communication with the processor, wherein the slotted mode module is configured to provide for slotted mode operation based on an occurrence of a network system loss event, wherein the slotted mode operation is an operation during which the wireless communication device periodically wakes to receive any paging signals and attempts to acquire an active set pilot from the network system during an initial slotted mode wake-up and one or more additional slotted mode wake-ups;
• a system acquisition module stored in the memory and in communication with the processor, wherein the system acquisition module is configured to attempt to acquire the network system only if the slotted mode operation fails to acquire the active set pilot from the network system;
• and
• wherein the slotted mode module is further configured to bypass the additional slotted mode wake-ups, and the system acquisition module is further configured to attempt to acquire a system after the initial slotted mode wake up fails to acquire the active set pilot, if a condition is met.