Wireless communication method and wireless communication terminal

• US 10,327,262 B2
• Filed: 08/07/2015
• Issued: 06/18/2019
• Est. Priority Date: 08/07/2014
• Status: Active Grant

• Current Assignee: SK Telecom Co., Ltd., WILUS Inc.
• Original Assignee: SK Telecom Co., Ltd., WILUS Inc.
• Inventors: Ahn, Jinsoo, Kim, Yongho, Kwak, Jinsam, Son, Juhyung
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): Lalchinthang, Vanneilian
• Application Number:
  US15/502,202
• Publication Number:
  US 20170231008A1
• Time in Patent Office: 1,411 Days
• Field of Search: 370329
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

Provided is a wireless communication terminal. The wireless communication terminal includes a transceiver configured to transmit/receive a wireless signal, and a processor configured to control an operation of the wireless communication terminal. The transceiver receives a trigger frame including information on a channel to be used, by a plurality of wireless communication terminals including the wireless communication terminal, in communication with a base wireless communication terminal that is any one wireless communication terminal different from the plurality of wireless communication terminals.

Claims

1. A base wireless communication terminal comprising:

a transceiver; and

a processor,

wherein the processor is configured to transmit, by using the transceiver, a first non-data frame which reserves a Transmit Opportunity (TXOP) and identifies a first channel by an index indicating predetermined channel usage pattern for a frequency band range to a first plurality of wireless communication terminals,

receive, by using the transceiver, at least one second non-data frame through the first channel which is indicated by the first non-data frame from at least one of the first plurality of wireless communication terminals,

simultaneously transmit, by using the transceiver, a first plurality of data frames to a second plurality of wireless communication terminals, and

simultaneously receive, by using the transceiver, a second plurality of data frames from a third plurality of wireless communication terminals, through a second plurality of channels which are indicated by a signaling information,

wherein the signaling information is transmitted from the base wireless communication terminal and represents information on channels allocated to each of the second plurality of wireless communication terminals,

wherein the first plurality of data frames and the second plurality of data frames are transmitted in the TXOP.

2. The base wireless communication terminal of claim 1, wherein the third plurality of wireless communication terminals are not restricted within the second plurality of communication terminals.

3. The base wireless communication terminal of claim 2, wherein the processor is configured to allocate the second plurality of channels within channels, which are used when transmitting from the base wireless communication terminal to the second plurality of wireless communication terminals is executed before the transmitting of the second plurality of data frames, to each of the third plurality of wireless communication terminals.

4. The base wireless communication terminal of claim 1, wherein the processor is configured to synchronize airtimes of the first plurality of data frames.

5. The base wireless communication terminal of claim 4, wherein the processor is configured to pad at least one of the first plurality data frames to synchronize the airtimes of the first plurality of data frames.

6. A wireless communication terminal comprising:

a transceiver; and

a processor,

wherein the processor is configured to receive, by using the transceiver, a first non-data frame which reserves a Transmit Opportunity (TXOP) and identifies a first channel by an index indicating predetermined channel usage pattern for a frequency band range from a base wireless communication terminal, simultaneously with at least one of a first plurality of wireless communication terminals,

transmit, by using the transceiver, a second non-data frame through a first channel which is indicated by the first non-data frame to the base wireless communication terminal when the first non-data frame indicates an association identifier (ID) of the wireless communication terminal,

receive, by using the transceiver, a first data frame from the base wireless communication terminal, simultaneously with receiving a first plurality of data frames by at least one of a second plurality of wireless communication terminals, and

transmit, by using the transceiver, a second data frame to the base wireless communication terminal through a second channel which is indicated by a signaling information, simultaneously with transmitting a second plurality of data frames by at least one of a third plurality of wireless communication terminals,

wherein the signaling information is transmitted from the base wireless communication terminal and represents information on channels allocated to the wireless communication terminal and each of the first plurality of wireless communication terminals,

wherein the first data frame and the second data frame are transmitted in the TXOP.

7. The wireless communication terminal of claim 6, wherein the third plurality of wireless communication terminals are not restricted within the second plurality of communication terminals.

8. The wireless communication terminal of claim 7, wherein the second channel is allocated within channels which are used when transmitting from the base wireless communication terminal to the wireless communication terminal and the at least one of the second plurality of wireless communication terminals is executed before the transmitting of the second data frame.

9. The wireless communication terminal of claim 6, wherein an airtime of the first data frame is synchronized with an airtime of the first plurality of data frames.

10. The wireless communication terminal of claim 9, wherein padding is used for the synchronization of the airtime of the first data frame with the airtime of the first plurality of data frames.

11. An operation method of wireless communication terminal, the method comprising:

receiving a first non-data frame which reserves a Transmit Opportunity (TXOP) and identifies a first channel by an index indicating predetermined channel usage pattern for a frequency band range from a base wireless communication terminal, simultaneously with at least one of a first plurality of wireless communication terminals,

transmitting a second non-data frame through a first channel which is indicated by the first non-data frame to the base wireless communication terminal when the first non-data frame indicates an association identifier (ID) of the wireless communication terminal,

receiving a first data frame from the base wireless communication terminal, simultaneously with receiving a first plurality of data frames by the at least one of a second plurality of wireless communication terminals, and

transmitting a second data frame to the base wireless communication terminal through a second channel which is indicated by a signaling information, simultaneously with transmitting a second plurality of data frames by at least one of a third plurality of wireless communication terminals,

wherein the signaling information is transmitted from the base wireless communication terminal and represents information on channels allocated to the wireless communication terminal and each of the first plurality of wireless communication terminals,

wherein the first data frame and the second data frame are transmitted in the TXOP.

12. The method of claim 11, wherein the third plurality of wireless communication terminals are not restricted within the second plurality of communication terminals.

13. The method of claim 12, wherein the second channel is allocated within channels which are used when transmitting from the base wireless communication terminal to the wireless communication terminal and at least one of the second plurality of wireless communication terminals is executed before the transmitting of the second data frame.

14. The method of claim 11, wherein an airtime of the first data frame is synchronized with an airtime of the first plurality of data frames.

15. The method of claim 14, wherein padding is used for the synchronization of the airtime of the first data frame with the airtime of the first plurality of data frames.