Method and apparatus for transmitting wireless local area network information

• US 10,615,936 B2
• Filed: 03/01/2018
• Issued: 04/07/2020
• Est. Priority Date: 09/01/2015
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Lin, Meilu, Gan, Ming, Liu, Le, Zhu, Jun, Yu, Jian
• Primary Examiner(s): Nguyen, Steven H
• Application Number:
  US15/908,866
• Publication Number:
  US 20180205520A1
• Time in Patent Office: 768 Days
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/121 for groups of terminals or users
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A method for sending a wireless local area network packet structure is provided, and the method comprises: determining a packet structure, where the packet structure comprises an HE-SIGA and an HE-SIGB, the HE-SIGA comprises an indication information, and if a current transmission mode is a full bandwidth MU-MIMO transmission, the indication information is used to indicate a number of scheduled users, or if the current transmission mode is other transmission mode, the indication information is used to indicate a number of symbols in the HE-SIGB; and sending the packet structure.

Claims

1. A method for sending a wireless local area network packet structure, comprising:

generating a packet structure, wherein the packet structure comprises a high efficient signal field A (HE-SIGA) and a high efficient signal field B (HE-SIGB), wherein the HE-SIGA comprises an indication information field, wherein if a transmission mode is a full bandwidth MU-MIMO or single-user transmission, the indication information field indicates a number of scheduled users, and if the transmission mode is other transmission mode, the indication information field-indicates a number of symbols in the HE-SIGB; and

sending the packet structure.

2. The method according to claim 1, wherein

the HE-SIGA further comprises a transmission mode indication, indicating whether the transmission mode is the full bandwidth MU-MIMO or single-user transmission.

3. The method according to claim 1, wherein

if the transmission mode is the full bandwidth MU-MIMO or single-user transmission, the HE-SIGB corresponding to one of the following:

a common field of the HE-SIGB does not comprise information about the number of the scheduled users;

the HE-SIGB does not include resource allocation indication information and does not include information of the number of the scheduled users;

a common field of the HE-SIGB does not include resource allocation indication information;

or,

a common field is not present in the HE-SIGB.

4. The method according to claim 2, wherein the transmission mode indication comprises:

an information indicates that the current transmission is an OFDMA transmission mode or a non-OFDMA transmission mode, wherein non-OFDMA transmission mode indicates a full bandwidth MU-MIMO or single-user transmission.

5. The method according to claim 2, wherein the transmission mode indication comprises:

a SIGB mode indication information, the SIGB mode indication information is configured to indicate an indication information type included in the HE-SIGB, wherein a first value of the SIGB mode indication information indicates that the transmission mode is the full bandwidth MU-MIMO or single-user transmission and a length of a common field of the HE-SIGB is 0.

6. A method for receiving a wireless local area network packet structure, comprising:

receiving a packet structure, wherein the packet structure comprises a high efficient signal field A (HE-SIGA) and a high efficient signal field B (HE-SIGB), the HE-SIGA comprises an indication information field, wherein if a transmission mode is a full bandwidth MU-MIMO or single-user transmission, the indication information field indicates a number of scheduled users, and if the transmission mode is other transmission mode, the indication information field indicates a number of symbols in the HE-SIGB; and

performing processing according to the number of the scheduled users or the number of the symbols in the HE-SIGB in the packet structure.

7. The method according to claim 6, wherein

the HE-SIGA further comprises a transmission mode indication, indicating whether the transmission mode is the full bandwidth MU-MIMO or single-user transmission.

8. The method according to claim 6, wherein

if the transmission mode is the full bandwidth MU-MIMO or single-user transmission, the HE-SIGB corresponding to one of the following:

a common field of the HE-SIGB does not comprise information about the number of the scheduled users;

or,

the HE-SIGB does not include resource allocation indication information and does not include information of the number of the scheduled users;

or,

a common field of the HE-SIGB does not include resource allocation indication information;

or,

a common field is not present in the HE-SIGB.

9. The method according to claim 7, wherein the transmission mode indication comprises:

an information indicates that the current transmission is an OFDMA transmission mode or a non-OFDMA transmission mode, wherein non-OFDMA transmission mode means a full bandwidth MU-MIMO or single-user transmission.

10. The method according to claim 7, wherein the transmission mode indication comprises:

a SIGB mode indication information, the SIGB mode indication information is configured to indicate an indication information type included in the HE-SIGB, wherein a first value of the SIGB mode indication information indicates the transmission mode is the full bandwidth MU-MIMO or single-user transmission and a length of a common field of the HE-SIGB is 0.

11. A transmission apparatus in a wireless local area network, located on a sending side, comprising a processor and a memory, wherein the memory stores instructions for the processor to:

generate a packet structure, wherein the packet structure comprises a high efficient signal field A (HE-SIGA) and a high efficient signal field B (HE-SIGB), the HE-SIGA comprises an indication information field, wherein if a transmission mode is a full bandwidth MU-MIMO or single-user transmission, the indication information field indicates a number of scheduled users, and if the transmission mode is other transmission mode, the indication information field indicates a number of symbols in the HE-SIGB; and

send the packet structure.

12. The transmission apparatus according to claim 11, wherein

the HE-SIGA further comprises a transmission mode indication, indicating whether the transmission mode is the full bandwidth MU-MIMO or single-user transmission.

13. The transmission apparatus according to claim 11, wherein

if the transmission mode is the full bandwidth MU-MIMO or single-user transmission, the HE-SIGB corresponding to one of the following:

a common field of the HE-SIGB does not comprise information about the number of the scheduled users;

or,

the HE-SIGB does not include resource allocation indication information and does not include information of the number of the scheduled users;

or,

a common field of the HE-SIGB does not include resource allocation indication information;

or,

a common field is not present in the HE-SIGB.

14. The apparatus according to claim 12, wherein the transmission mode indication comprises:

an information indicates that the current transmission is an OFDMA transmission mode or a non-OFDMA transmission mode, wherein non-OFDMA transmission mode indicates a full bandwidth MU-MIMO or single-user transmission.

15. The apparatus according to claim 12, wherein the transmission mode indication comprises:

a SIGB mode indication information, the SIGB mode indication information is used to indicate an indication information type included in the HE-SIGB, wherein a first value of the SIGB mode indication information is used for, indicating the transmission mode is the full bandwidth MU-MIMO or single-user transmission and a length of a common field of the HE-SIGB is 0.

16. An apparatus in a wireless local area network, located on a receiving side, comprising a processor and a memory, wherein the memory stores instructions for the processor to:

receive a packet structure, wherein the packet structure comprises a high efficient signal field A (HE-SIGA) and a high efficient signal field B (HE-SIGB), the HE-SIGA comprises an indication information field, wherein if a transmission mode is a full bandwidth MU-MIMO or single-user transmission, the indication information field is used for indicating a number of scheduled users, and if the transmission mode is other transmission mode, the indication information field is used for indicating a number of symbols in the HE-SIGB; and

perform processing according to the number of the scheduled users or the number of the symbols in the HE-SIGB in the packet structure.

17. The apparatus according to claim 16, wherein

the HE-SIGA further comprises a transmission mode indication, indicating whether the current transmission mode is the full bandwidth MU-MIMO transmission.

18. The apparatus according to claim 16, wherein

if the transmission mode is the full bandwidth MU-MIMO or single-user transmission, the HE-SIGB corresponding to one of the following:

a common field of the HE-SIGB does not comprise information about the number of the scheduled users;

or,

the HE-SIGB does not include resource allocation indication information and does not include information of the number of the scheduled users;

or,

a common field of the HE-SIGB does not include resource allocation indication information;

or,

a common field is not present in the HE-SIGB.

19. The apparatus according to claim 17, wherein the transmission mode indication comprises:

an information indicates that the current transmission is an OFDMA transmission mode or a non-OFDMA transmission mode, wherein non-OFDMA transmission mode means a full bandwidth MU-MIMO or single-user transmission.

20. The apparatus according to claim 17, wherein the transmission mode indication comprises:

a SIGB mode indication information, the SIGB mode indication information is configured to indicate an indication information type included in the HE-SIGB, wherein a first value of the SIGB mode indication information indicates the transmission mode is the full bandwidth MU-MIMO or single-user transmission and a length of a common field of the HE-SIGB is 0.