Method and apparatus for receiving code transmissions over timeslots and antennas

• US 8,432,867 B2
• Filed: 05/19/2008
• Issued: 04/30/2013
• Est. Priority Date: 09/06/1994
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Bolgiano, Duane Ridgely, LaVean, Gilbert E.
• Primary Examiner(s): WILSON, ROBERT W
• Application Number:
  US12/123,217
• Publication Number:
  US 20080219234A1
• Time in Patent Office: 1,807 Days
• Field of Search: None
• US Class Current: 370/330
• CPC Class Codes: G01S 5/10 Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements , e.g. omega or decca systemsG01S5/12 takes precedence ; beacons and receivers cooperating therewith G01S1/306, G01S1/308
• CPC Class Codes: G01S 5/14 Determining absolute distances from a plurality of spaced points of known location
• CPC Class Codes: H01Q 21/29 Combinations of different interacting antenna units for giving a desired directional characteristic H01Q25/00 takes precedence
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04B 7/0671 using different delays between antennas
• CPC Class Codes: H04B 7/082 selecting best antenna path
• CPC Class Codes: H04B 7/0857 using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
• CPC Class Codes: H04B 7/0888 with selection
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

A plurality of antennas transmit a first spread spectrum signal having an associated code. The first spread spectrum signal is received at the wireless user. For each received first spread spectrum signal, a second spread spectrum signal is transmitted having an associated code having a same phase as that received first spread spectrum signal. The second spread spectrum signals are received at the plurality of antennas. A distance measurement is determined between each antenna and the wireless user based on in part a received timing of the second signals. The wireless user'"'"'s location is determined based on in part the distance determinations.

Claims

1. A subscriber unit comprising:

a receiver configured to receive a first signal and a second signal in at least one time slot, wherein the first signal represents a first set of bits associated with a data packet and the second signal represents a second set of bits associated with the data packet;

at least one buffer configured to store the first set of bits and the second set of bits; and

a combiner configured to combine at least a portion of the first set of bits associated with the data packet and at least a portion of the second set of bits associated with the data packet to reconstruct at least a portion of the data packet.

2. The subscriber unit of claim 1, further comprising:

a transmitter configured to transmit an indication that the data packet was received.

3. The subscriber unit of claim 1, wherein the first and second signals are CDMA signals.

4. The subscriber unit of claim 1, wherein the first and second signals are frequency hopped.

5. The subscriber unit of claim 1, wherein the first set of bits associated with the first signal are the same as the second set of bits associated with the second signal.

6. The subscriber unit of claim 1, wherein the receiver is further configured to begin receiving the first signal prior to beginning to receive the second signal.

7. The subscriber unit of claim 1, wherein the first signal is received in a plurality of time slots.

8. The subscriber unit of claim 1, wherein the first and second signals are diversity received from a plurality of antennas.

9. The subscriber unit of claim 1, wherein the first signal is received in a first time slot and the second signal is received in a second time slot.

10. A method for receiving a data packet at a subscriber unit, the method comprising:

receiving a first signal representing a first plurality of bits corresponding to a data packet;

receiving a second signal representing a second plurality of bits corresponding to the data packet;

storing the first plurality of bits corresponding to the data packet and the second plurality of bits corresponding to the data packet; and

combining at least a portion of the first plurality of bits corresponding to the data packet with at least a portion of the second plurality of bits corresponding to the data packet to reconstruct at least a portion of the data packet.

11. The method of claim 10, further comprising transmitting an indication that the data packet was received.

12. The method of claim 10, wherein the first plurality of bits corresponding to the data packet and the second plurality of bits corresponding to the data packet are identical.

13. The method of claim 10, wherein the first signal and the second signal are each received in a respective at least one time slot.

14. The method of claim 10, wherein the first signal and the second signal are received in different time slots.

15. The method of claim 10, further comprising selecting the at least a portion of the first plurality of bits corresponding to the data packet and the at least a portion of the second plurality of bits corresponding to the data packet to reconstruct at least a portion of the data packet.

16. The method of claim 10, wherein the first signal and the second signal are CDMA signals.

17. A subscriber unit comprising:

a receiver configured to receive a first signal in at least one time slot, wherein the first signal includes a first plurality of bits corresponding to a data packet;

a transmitter configured to transmit an indication that the data packet was received on a condition that the data packet is received,

wherein the receiver is further configured to receive a second signal in at least one time slot, wherein the second signal includes a second plurality of bits corresponding to the data packet; and

a combiner configured to combine at least a portion of the first plurality of bits corresponding to the data packet with at least a portion of the second plurality of bits corresponding to the data packet to reconstruct at least a portion of the data packet.

18. The subscriber unit of claim 17, wherein the first signal is received in one time slot and the second signal is received in the same time slot as the first signal.

19. The subscriber unit of claim 17, wherein the first plurality of bits corresponding to the data packet are identical to the second plurality of bits corresponding to the data packet.