LONG-RANGE LOW-POWER FRAME STRUCTURE

• US 20170272976A1
• Filed: 03/13/2017
• Published: 09/21/2017
• Est. Priority Date: 03/15/2016
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: YANG, Lin, TIAN, Bin, VERMANI, Sameer
• Application Number:
  US15/457,429
• Publication Number:
  US 20170272976A1
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2603 Signal structure ensuring backward compatibility with legacy system
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04W 28/065 using assembly or disassembly of packets
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present application relates to transmitting data according to a frame structure. The described aspects include receiving data for transmission to at least one of an access point or a receiving station. The described aspects further include generating one or more first data packets according to one of a first frame structure including a first portion of one or more symbols associated with a first technology mode of a RAT and a second portion of one or more symbols associated with a second technology mode of the RAT or a second frame structure including one or more symbols associated with the second technology mode of the RAT. The described aspects further include transmitting the one or more packets.

Claims

1. An apparatus for wireless communication, comprising:

a memory; and

at least one processor coupled to the memory and configured to;

generate a data packet according to one of a first frame structure comprising a first portion of symbols associated with a first technology mode of a radio access technology (RAT) and a second portion of symbols associated with a second technology mode of the RAT or a second frame structure comprising one or more symbols associated with the second technology mode of the RAT; and

transmit the generated data packet.

2. The apparatus of claim 1, wherein the first portion of the first frame structure comprises a legacy preamble and the second portion of the first frame structure comprises a second technology mode preamble and data, wherein the apparatus operates in the first technology mode for data packet generation when at least one wireless device within a distance threshold of the apparatus is not LRLP capable, and wherein the apparatus operates in the second technology mode for data packet generation when all wireless devices within the distance threshold of the apparatus are LRLP capable.

3. The apparatus of claim 2, wherein the legacy preamble of the first frame structure comprises:

a legacy short training field (L-STF),

a legacy long training field (L-LTF),

a legacy signal (L-SIG) field,

a repeated legacy signal (RL-SIG) field, and

a high efficiency signal (HE-SIG) field.

4. The apparatus of claim 3, wherein the HE-SIG field corresponds to one of a high efficiency single user (HE-SU) signal field or a high efficiency extended mode single user (HE-EXT-SU) signal field, and wherein the HE-SIG field comprises one bit indicating that the second portion of symbols associated with the second technology mode follows the first portion of symbols associated with the first technology mode.

5. The apparatus of claim 2, wherein the legacy preamble of the first frame structure comprises:

a legacy short training field (L-STF),

a legacy long training field (L-LTF),

a legacy signal (L-SIG) field,

a repeated legacy signal (RL-SIG) field indicating that the second portion of symbols associated with the second technology mode follows the first portion of symbols associated with the first technology mode, and

a Binary Phase Shift Keying (BPSK) field.

6. The apparatus of claim 2, wherein the second technology mode preamble of the second portion includes:

a second technology mode short training field (STF),

a second technology mode first long training field (LTF),

a second technology mode signal (SIG) field, and

a second technology mode second LTF.

7. The apparatus of claim 6, wherein the second technology mode first LTF comprises a basic service set (BSS)-specific sequence.

8. The apparatus of claim 2, wherein the at least one processor is configured to generate the data packet according to the first frame structure by generating the data packet with multiple second portions, and wherein each second portion of the multiple second portions is associated with a distinct frequency bandwidth.

9. The apparatus of claim 2, wherein the first portion of the first frame structure precedes the second portion of the first frame structure.

10. The apparatus of claim 1, wherein the second frame structure comprises a second technology mode preamble and corresponds to an unsynchronized second technology mode greenfield single user packet structure, the second technology mode preamble comprising:

a second technology mode short training field (STF),

a second technology mode first long training field (LTF),

a second technology mode signal (SIG) field, and

a second technology mode second LTF.

11. The apparatus of claim 10, wherein the second technology mode first LTF comprises a basic service set (BSS)-specific sequence.

12. The apparatus of claim 1, wherein the second frame structure comprises a second technology mode preamble and corresponds to a trigger-based second technology mode packet structure, the second technology mode preamble comprising:

a shortened second technology mode short training field (STF),

a second technology mode first long training field (LTF) comprising a basic service set (BSS)-specific sequence, and

a second technology mode second LTF.

13. The apparatus of claim 12, wherein the second technology mode preamble further comprises a second technology mode signal (SIG) field.

14. The apparatus of claim 1, wherein the second frame structure comprises a second technology mode preamble and corresponds to a synchronization packet structure, the second technology mode preamble comprising:

a shortened second technology mode short training field (STF), and

one of a second technology mode first long training field (LTF) or a basic service set (BSS)-specific sequence.

15. The apparatus of claim 1, wherein the second frame structure comprises a second technology mode preamble and corresponds to a synchronized packet transmission structure, the second technology mode preamble comprising:

a shortened second technology mode short training field (STF),

a second technology mode first long training field (LTF) comprising a basic service set (BSS)-specific sequence, and

a second technology mode second LTF.

16. The apparatus of claim 15, wherein the second technology mode preamble further comprises a second technology mode signal (SIG) field.

17. The apparatus of claim 1, wherein the at least one processor is further configured to receive a second data packet generated according to the first frame structure or the second frame structure.

18. A method of wireless communication, comprising:

generating a data packet according to one of a first frame structure comprising a first portion of symbols associated with a first technology mode of a radio access technology (RAT) and a second portion of symbols associated with a second technology mode of the RAT or a second frame structure comprising one or more symbols associated with the second technology mode of the RAT; and

transmitting the generated data packet.

19. The method of claim 18, wherein the first portion of the first frame structure comprises a legacy preamble and the second portion of the first frame structure comprises a second technology mode preamble and data.

20. The method of claim 19, wherein the legacy preamble of the first frame structure comprises:

a legacy short training field (L-STF),

a legacy long training field (L-LTF),

a legacy signal (L-SIG) field,

a repeated legacy signal (RL-SIG) field, and

a high efficiency signal (HE-SIG) field.

21. The method of claim 20, wherein the HE-SIG field corresponds to one of a high efficiency single user (HE-SU) signal field or a high efficiency extended mode single user (HE-EXT-SU) signal field, and wherein the HE-SIG field comprises one bit indicating that the second portion of symbols associated with the second technology mode follows the first portion of symbols associated with the first technology mode.

22. The method of claim 19, wherein the legacy preamble of the first frame structure comprises:

a legacy short training field (L-STF),

a legacy long training field (L-LTF),

a legacy signal (L-SIG) field,

a repeated legacy signal (RL-SIG) field indicating that the second portion of symbols associated with the second technology mode follows the first portion of symbols associated with the first technology mode, and

a Binary Phase Shift Keying (BPSK) field.

23. The method of claim 19, wherein the second technology mode preamble of the second portion includes:

a second technology mode short training field (STF),

a second technology mode first long training field (LTF),

a second technology mode signal (SIG) field, and

a second technology mode second LTF, wherein the second technology mode first LTF comprises a basic service set (BSS)-specific sequence.

24. The method of claim 19, wherein the generating the data packet according to the first frame structure comprises generating the data packet with multiple second portions, and wherein each second portion of the multiple second portions is associated with a distinct frequency bandwidth.

25. The method of claim 18, wherein the second frame structure comprises a second technology mode preamble and corresponds to an unsynchronized second technology mode greenfield single user packet structure, the second technology mode preamble comprising:

a second technology mode short training field (STF),

a second technology mode first long training field (LTF),

a second technology mode signal (SIG) field, and

a second technology mode second LTF, wherein the second technology mode first LTF comprises a basic service set (BSS)-specific sequence.

26. The method of claim 18, wherein the second frame structure comprises a second technology mode preamble and corresponds to a trigger-based second technology mode packet structure, the second technology mode preamble comprising:

a shortened second technology mode short training field (STF),

a second technology mode first long training field (LTF) comprising a basic service set (BSS)-specific sequence,

a second technology mode signal (SIG) field, and

a second technology mode second LTF.

27. The method of claim 18, wherein the second frame structure comprises a second technology mode preamble and corresponds to a synchronization packet structure, the second technology mode preamble comprising:

a shortened second technology mode short training field (STF), and

one of a second technology mode first long training field (LTF) or a basic service set (BSS)-specific sequence.

28. The method of claim 18, wherein the second frame structure comprises a second technology mode preamble and corresponds to a synchronized packet transmission structure, the second technology mode preamble comprising:

a shortened second technology mode short training field (STF),

a second technology mode first long training field (LTF) comprising a basic service set (BSS)-specific sequence,

a second technology mode signal (SIG) field, and

a second technology mode second LTF.

29. An apparatus for wireless communication, comprising:

means for generating a data packet according to one of a first frame structure comprising a first portion of symbols associated with a first technology mode of a radio access technology (RAT) and a second portion of symbols associated with a second technology mode of the RAT or a second frame structure comprising one or more symbols associated with the second technology mode of the RAT; and

means for transmitting the generated data packet.

30. A computer-readable medium storing computer executable code, comprising code to:

generate a data packet according to one of a first frame structure comprising a first portion of symbols associated with a first technology mode of a radio access technology (RAT) and a second portion of symbols associated with a second technology mode of the RAT or a second frame structure comprising one or more symbols associated with the second technology mode of the RAT; and

transmit the generated data packet.