Position location system architecture: messaging and ranging links

A method within an indoor position location system, comprising:

• transmitting, by an asset tag, a reduced size packet to an access point;
• receiving a frequency and/or timing error estimate of the asset tag relative to the access point;
• and
• synchronizing, by the asset tag, with the access point according to the frequency and/or timing error estimate of the asset tag relative to the access point.

An apparatus of an indoor position location system, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured:
• to periodically wake-up to search for a narrowband pilot signal;
• and
• to synchronize with an access point when the narrowband pilot signal is detected.

A computer program product configured for an indoor position location system, the computer program product comprising:

• a non-transitory computer-readable medium having non-transitory program code recorded thereon, the non-transitory program code comprising:
• program code to periodically wake-up to search for a narrowband pilot signal;
• and
• program code to synchronize with an access point when the narrowband pilot signal is detected.

An apparatus of an indoor position location system, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured:
• to transmit a reduced size packet to an access point;
• to receive a frequency and/or timing error estimate of the apparatus relative to the access point;
• and
• to synchronize with the access point according to the frequency and/or timing error estimate of the apparatus relative to the access point.

A computer program product configured for an indoor position location system, the computer program product comprising:

• a non-transitory computer-readable medium having non-transitory program code recorded thereon, the non-transitory program code comprising:
• program code to transmit a reduced size packet to an access point;
• program code to receive a frequency and/or timing error estimate relative to the access point;
• and
• program code to synchronize with the access point according to the frequency and/or timing error estimate relative to the access point.

An apparatus of an indoor position location system, comprising:

• means for transmitting a reduced size packet to an access point;
• means for receiving a frequency and/or timing error estimate of the apparatus relative to the access point;
• and
• means for synchronizing with the access point according to the frequency and/or timing error estimate of the apparatus relative to the access point.