CN-116489812-B - Wireless communication method using BSS identifier and wireless communication terminal thereof

CN116489812BCN 116489812 BCN116489812 BCN 116489812BCN-116489812-B

Abstract

The present invention relates to a wireless communication method using BSS identifiers and a wireless communication terminal thereof. A wireless communication terminal for wireless communication is disclosed. The wireless communication terminal includes a transmitting and receiving unit for transmitting and receiving a wireless signal, and a processor for processing the wireless signal. The processor generates a trigger frame for triggering random access of at least one wireless communication terminal based on uplink transmission, and inserts the trigger frame into a physical layer protocol data unit (PPDU) to transmit the PPDU.

Inventors

GAO JIANZHONG
An Youzhen
SUN ZHOUHENG
Guo Zhensan

Assignees

韦勒斯标准与技术协会公司
SK 电信股份有限公司

Dates

Publication Date: 20260508
Application Date: 20180416
Priority Date: 20170414

Claims (6)

1. A wireless communication terminal in wireless communication with a base station wireless communication terminal, the wireless communication terminal comprising: A transceiver configured to transmit and receive wireless signals, and A processor configured to process the wireless signal, Wherein the processor is configured to: Receiving a physical layer protocol data unit, PPDU, comprising a trigger frame for triggering a transmission to the base station wireless communication terminal, wherein the trigger frame comprises an identifier identifying the wireless communication terminal triggered by the trigger frame, When the PPDU indicates a basic service set BSS color using a signaling field of the PPDU, setting a value of a BSS color to be indicated by a trigger-based PPDU based on a value of the BSS color indicated by the PPDU including the trigger frame, Setting a value of a BSS color to be indicated by the trigger-based PPDU according to an effective BSS color of the wireless communication terminal when the signaling field of the PPDU does not indicate the BSS color, and Transmitting the trigger-based PPDU based on the trigger frame, Wherein the BSS color is one of the identifiers identifying BSS, and Wherein when the wireless communication terminal receives information on BSS color change from the base station wireless communication terminal and reaches a BSS color change time point indicated by the information on the BSS color change, the effective BSS color is a value of a BSS color indicated by the information on the BSS color change.
2. The wireless communication terminal of claim 1, wherein the BSS color change time point is set based on a target beacon transmission time transmitted by the base station wireless communication terminal.
3. The wireless communication terminal of claim 1, wherein if the PPDU indicates a partial BSS color using a partial association ID AID field, the processor determines whether the PPDU is an intra-BSS PPDU or an inter-BSS PPDU based on the partial BSS color when a value of the partial AID field is non-zero, Wherein the partial AID field is a signaling field for indicating a portion of an AID value, Wherein the intra-BSS PPDU is a PPDU transmitted from a BSS including the wireless communication terminal, and the inter-BSS PPDU is a PPDU transmitted from a BSS not including the wireless communication terminal.
4. A method of operating a wireless communication terminal in wireless communication with a base station wireless communication terminal, the method comprising: Receiving a physical layer protocol data unit, PPDU, comprising a trigger frame for triggering a transmission to the base station wireless communication terminal, wherein the trigger frame comprises an identifier identifying the wireless communication terminal triggered by the trigger frame, When the PPDU indicates a basic service set BSS color using a signaling field of the PPDU, setting a value of a BSS color to be indicated by a trigger-based PPDU based on a value of the BSS color indicated by the PPDU including the trigger frame, Setting a value of a BSS color to be indicated by the trigger-based PPDU according to an effective BSS color of the wireless communication terminal when the signaling field of the PPDU does not indicate the BSS color, and Transmitting the trigger-based PPDU based on the trigger frame, Wherein the BSS color is one of the identifiers identifying BSS, and Wherein when the wireless communication terminal receives information on BSS color change from the base station wireless communication terminal and reaches a BSS color change time point indicated by the information on the BSS color change, the effective BSS color is a value of a BSS color indicated by the information on the BSS color change.
5. The method of claim 4, wherein the BSS color change time point is set based on a target beacon transmission time transmitted by the base station wireless communication terminal.
6. The method of claim 4, the method further comprising: If the PPDU indicates a partial BSS color using a partial association ID AID field, determining whether the PPDU is an intra-BSS PPDU or an inter-BSS PPDU based on the partial BSS color when a value of the partial AID field is non-zero, Wherein the partial AID field is a signaling field for indicating a portion of an AID value, Wherein the intra-BSS PPDU is a PPDU transmitted from a BSS including the wireless communication terminal, and the inter-BSS PPDU is a PPDU transmitted from a BSS not including the wireless communication terminal.

Description

Wireless communication method using BSS identifier and wireless communication terminal thereof The present application is a divisional application of patent application with the name of "wireless communication method using BSS identifier and wireless communication terminal using the same", filed on 10 months 12 days of 2019 and with the international application number 201880024847.X (PCT/KR 2018/004397) of 4 months 16 days of the international application date of 2018 into the chinese patent office. Technical Field The present invention relates to a wireless communication method and a wireless communication terminal using BSS identifiers. Background In recent years, as the supply of mobile devices has been expanding, wireless communication technologies that can provide rapid wireless internet services to mobile devices have been receiving significant attention. Wireless communication technology allows mobile devices, including smart phones, smartcards, laptops, portable multimedia players, embedded devices, etc., to wirelessly access the internet in a home or company or specific service providing area. One of the most well-known wireless communication technologies is the wireless LAN technology. Since the use of a frequency of 2.4GHz to support the original wireless LAN technology, the Institute of Electrical and Electronics Engineers (IEEE) 802.11 has commercialized or developed various technical standards. First, IEEE 802.11b supports a communication speed of 11Mbps at maximum when using frequencies of the 2.4GHz band. The IEEE 802.11a commercialized after the IEEE 802.11b uses frequencies not the 2.4GHz band but the 5GHz band, reduces the influence of interference compared to frequencies of significant congestion of the 2.4GHz band, and increases the communication speed up to a maximum of 54Mbps by using an Orthogonal Frequency Division Multiplexing (OFDM) technique. However, IEEE 802.11a has a disadvantage in that the communication distance is shorter than IEEE 802.11 b. Further, IEEE 802.11g realizes a communication speed of a maximum 54Mbps using a frequency of a 2.4GHz band and satisfies backward compatibility to be clearly paid attention to the public similarly to IEEE 802.11b, and further is superior to IEEE 802.11a in terms of communication distance. Further, as a technical standard established in order to overcome the limitation of the communication speed indicated as a weakness in the wireless LAN, IEEE 802.11n has been provided. IEEE 802.11n aims to increase the speed and reliability of a network and to extend the working distance of a wireless network. In more detail, IEEE 802.11n supports High Throughput (HT) with a data processing speed of 540Mbps or more at maximum, and further, a Multiple Input Multiple Output (MIMO) technique using multiple antennas on both sides of a transmitting unit and a receiving unit based on the multiple antennas in order to minimize transmission errors and optimize data speed. Furthermore, the standard may use a coding scheme that transmits multiple copies overlapping each other in order to improve data reliability. As the supply of wireless LANs is active and applications using wireless LANs further diversify, a need for a new wireless LAN system for supporting a higher throughput (very high throughput (VHT)) than the data processing speed supported by IEEE 802.11n has been paid attention to. Among them, IEEE 802.11ac supports a wide bandwidth (80 to 160 MHz) of 5GHz frequency. The IEEE 802.11ac standard is defined only in the 5GHz band, but the original 11ac chipset would even support operation in the 2.4GHz band for backward compatibility with existing 2.4GHz band products. Theoretically, according to this standard, the wireless LAN speeds of a plurality of stations can reach 1Gbps at maximum and the maximum single link speed can reach 500Mbps at maximum. This is achieved by expanding the concepts of wireless interfaces accepted by 802.11n, such as wider wireless frequency bandwidth (max 160 MHz), more MIMO spatial streams (max 8), multi-user MIMO, and high density modulation (max 256 QAM). In addition, as a scheme for transmitting data by using a 60GHz band instead of the existing 2.4GHz/5GHz, IEEE 802.11ad has been provided. IEEE 802.11ad is a transmission standard that provides a maximum speed of 7Gbps by using a beamforming technique and is suitable for high bit rate moving image streams such as mass data or uncompressed HD video. However, since the 60GHz band is difficult to pass through an obstacle, it is disadvantageous in that the 60GHz band can be used only between devices in a short distance space. Meanwhile, in recent years, as a next-generation wireless communication technology standard after 802.11ac and 802.11ad, discussion on providing high-efficiency and high-performance wireless communication technology in a high-density environment is continuously underway. That is, in the next-generation wireless communication technology environment, it is r