Heterogeneous network allocation vector (NAV)-based communication in wireless LAN system
AssigneeLG Electronics Inc.
InventorsJeongki Kim, Kiseon Ryu, Hangyu Cho
Life of this patent
Estimating the term…
Abstract
In the wireless LAN system, the station STA receives a frame and updates a corresponding Inter-BSS Network Allocation Vector (NAV) or Intra-BSS NAV according to whether the frame is an Inter-BSS (Basic Service Set) frame or an Intra-BSS frame. If the received frame cannot be distinguished from the Inter-BSS frame or the Intra-BSS frame, it updates the Inter-NAV, and after receiving the frame that cannot be distinguished from the Inter-BSS frame or the Intra-BSS frame, it receives the CF-End frame, and then the corresponding NAV is reset.
Claims12
A method for transmitting a signal by a station (STA) in a Wireless Local Area Network (WLAN) system, the method comprising:
- maintaining a first Network Allocation Vector (NAV) and a second NAV;
- receiving a first frame;
- updating the second NAV based on that the first frame cannot be classified as an Inter-Basic Service Set (BSS) frame or an Intra-BSS frame;
- receiving a Contention Free (CF)-END frame,
- resetting the first NAV, the second NAV, or both of the first NAV and the second NAV, such that:
- the first NAV is reset based on that the CF-END frame is the Intra-BSS frame,
- the second NAV is reset based on that the CF-END frame is the Inter-BSS frame, and
- both of the first NAV and the second NAV are reset based on that the CF-END frame is the Intra-BSS frame and the second NAV was updated due to that the first frame cannot be classified as the Inter-BSS frame or the Intra-BSS frame;
- and
- transmitting the signal based on the first NAV or the second NAV that have been reset.
A station (STA) operating in a Wireless Local Area Network (WLAN) system, the STA comprising:
- a transceiver configured to receive a first frame and a Contention Free (CF)-End frame;
- and
- a processor configured to maintain a first Network Allocation Vector (NAV) and a second NAV, and to update the second NAV based on that the first frame that cannot be classified as an Inter-Basic Service Set (BSS) frame or an Intra-BSS frame,
- wherein the processor further configured to reset the first NAV, the second NAV, or both of the first NAV and the second NAV such that:
- the first NAV is reset based on that the CF-END frame is the Intra-BSS frame,
- the second NAV is reset based on that the CF-END frame is the Inter-BSS frame, and
- both of the first NAV and the second NAV are reset based on that the CF-END frame, received by the transceiver, is the Intra-BSS frame and the second NAV was updated due to that the first frame cannot be classified as the Inter-BSS frame or the Intra-BSS frame.
Dependencies are inferred from the claim text.