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Methods, apparatuses and systems for supporting multi-user transmissions in a wireless local area network (wlan) system

A multi-user, wireless transmission technology, applied in the direction of radio transmission system, wireless network protocol, transmission system, etc., can solve the problems of MU control frame overhead, cannot support, reduce MAC efficiency, etc.

Pending Publication Date: 2017-09-26
INTERDIGITAL PATENT HLDG INC
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the IEEE 802.11ac multi-user grouping mechanism cannot support a large number of clusters, a combination of Orthogonal Frequency Division Multiple Access (OFDMA) clusters and Orthogonal Frequency Division Multiplexing (OFDM) MU-MIMO groups for multiple MU transmission schemes , or a flexible clustering and scheduling mechanism that can implement clustering processing and scheduling according to transmission
Also, current MU control frames are expensive and reduce MAC efficiency

Method used

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  • Methods, apparatuses and systems for supporting multi-user transmissions in a wireless local area network (wlan) system
  • Methods, apparatuses and systems for supporting multi-user transmissions in a wireless local area network (wlan) system
  • Methods, apparatuses and systems for supporting multi-user transmissions in a wireless local area network (wlan) system

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Embodiment Construction

[0049] Figure 1A is a diagram of an exemplary communication system 100 in which one or more disclosed embodiments may be implemented. Communication system 100 may be a multiple access system that provides voice, data, video, messaging, broadcast, etc. content to multiple wireless users. The communication system 100 can allow multiple wireless users to access these contents by sharing system resources including wireless bandwidth. As an example, the communication system 100 can use one or more channel access methods, such as Code Division Multiple Access (CDMA) CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA) or Single Carrier FDMA (SC-FDMA), etc.

[0050] Such as Figure 1A As shown, communication system 100 may include wireless transmit / receive units (WTRUs) 102a, 102b, 102c, 102d, radio access network (RAN) 104, core network 106, public switched telephone network (PSTN) 108, Internet 110, and other Network 112,...

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Abstract

Methods, devices and systems are provided for performing for multi-user (MU) transmission. A wireless transmit / receive unit (WTRU) may be configured to receive a frame, decode the received frame and determine whether the received frame is a null data packet (NDP) multi-user (MU) media access control (MAC) physical layer convergence protocol (PLCP) protocol data unit (PPDU) (NDP MU MAC PPDU) based on meeting an NDP condition. The NDP MU MAC PPDU may correspond to an MU transmission and may include a PLCP header which includes an NDP signal (SIG) field having MU control information. Based on the received frame meeting the NDP condition, the WTRU may be further configured to process the NDP SIG field, generate a response based on the NDP SIG field and the MU control information, and transmit the response.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application 62 / 101,890, filed January 9, 2015, and US Provisional Application 62 / 129,469, filed March 6, 2015, the contents of which are hereby incorporated by reference. Background technique [0003] A wireless local area network (WLAN) employing an infrastructure basic service set (BSS) mode has an access point for the BSS and one or more stations (STAs) associated with the AP. APs may have access or be capable of interfacing to a distribution system (DS) or other type of wired or wireless network for carrying traffic to and from the BSS. Traffic originating outside the BSS and destined for STAs may arrive through the AP and be delivered to the STAs. Traffic originating from a STA and destined for a destination outside the BSS may be sent to the AP for delivery to the corresponding destination. Traffic between STAs inside a BSS can also be sent through the AP, or ...

Claims

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Application Information

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IPC IPC(8): H04W74/00
CPCH04W74/006H04W80/00H04B7/0452
Inventor H·娄张国栋R·L·奥勒森X·王
Owner INTERDIGITAL PATENT HLDG INC
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