ENHANCED PILOT SIGNAL RECEIVER

• US 20140038645A1
• Filed: 07/25/2013
• Published: 02/06/2014
• Est. Priority Date: 05/18/2007
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Wu, Qiang, Zhao, Wanlun, Black, Peter John
• Application Number:
  US13/951,080
• Publication Number:
  US 20140038645A1
• Time in Patent Office: Days
• US Class Current: 455/456.6
• CPC Class Codes: G01S 19/24 Acquisition or tracking or demodulation of signals transmitted by the system synchronisation aspects of direct sequence spread spectrum modulation H04B1/7073
• CPC Class Codes: H03M 1/185 the determination of the range being based on more than one digital output value, e.g. on a running average, a power estimation or the rate of change
• CPC Class Codes: H04L 27/261 Details of reference signals
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 16/02 Resource partitioning among network components, e.g. reuse partitioning
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

Briefly, in accordance with one embodiment, a method of adjusting for digital automatic gain control (DAGC) quantization error in a mobile station is as follows. A first DAGC value is stored before reception of one or more enhanced pilot signals. A second DAGC value is computed during reception of the one or more enhanced pilot signal. The first DAGC value is restored after reception of the one or more enhanced pilot signals is over. An advantage associated with this particular embodiment may include reduction in quantization error for digital automatic gain control.

Claims

1. A method of detecting enhanced pilot signals for a mobile station comprising:

correlating a pseudo-random sequence with a received signal to determine whether the sequence is matched to the received signal;

if there is a match, using the correlated enhanced pilot signal to estimate position location for the mobile station.

2. The method of claim 1, wherein, if there is not a match, correlating the pseudo-random sequence with another received signal to determine whether there is a match.

3. The method of claim 1, wherein said pseudo-random sequence comprises a PN sequence.

4. An article comprising:

a storage medium having stored thereon instructions that if executed direct a mobile station to correlate a pseudo-random sequence with a received signal to determine whether the sequence is matched to the received signal and, if there is a match, use the correlated enhanced pilot signal to estimate position location for the mobile station.

5. The article of claim 4, wherein, if there is not a match, said instructions, if executed further directing the mobile station to correlate the pseudo-random sequence with another received signal to determine whether there is a match.

6. An article comprising:

a computing platform;

said computing platform to correlate a pseudo-random sequence with a received signal to determine whether the sequence is matched to the received signal, and, if there is a match, use the correlated enhanced pilot signal to estimate position location for the mobile station.

7. The article of claim 6, wherein, if there is not a match, said instructions, if executed, further directing the mobile station to correlate the pseudo-random sequence with another received signal to determine whether there is a match.

8. A mobile station comprising:

means for correlating a pseudo-random sequence with a received signal to determine whether the sequence is matched to the received signal; and

means for using the correlated enhanced pilot signal to estimate position location for the mobile station if there is a match.

9. The mobile station of claim 8, and further comprising means for correlating the pseudo-random sequence with another received signal to determine whether there is a match, if there is not a match with the received signal.