Processing

Please wait...

Settings

Settings

Goto Application

1. US20210410188 - SCRAMBLING SEQUENCES FOR REQUEST-TO-SEND (RTS) AND CLEAR-TO-SEND (CTS) FRAMES

Office
United States of America
Application Number 17335243
Application Date 01.06.2021
Publication Number 20210410188
Publication Date 30.12.2021
Publication Kind A1
IPC
H04W 74/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
08Non-scheduled access, e.g. random access, ALOHA or CSMA
H04W 74/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
H04L 27/26
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
CPC
H04W 84/12
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
84Network topologies
02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
10Small scale networks; Flat hierarchical networks
12WLAN [Wireless Local Area Networks]
H04W 74/0816
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
08Non-scheduled ; or contention based; access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
0808using carrier sensing, e.g. as in CSMA
0816carrier sensing with collision avoidance
H04L 27/2617
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2614Peak power aspects
2615Reduction thereof using coding
2617using block codes
H04W 74/008
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
002Transmission of channel access control information
008with additional processing of random access related information at receiving side
Applicants QUALCOMM Incorporated
Inventors Lin YANG
Youhan KIM
Bin TIAN
Title
(EN) SCRAMBLING SEQUENCES FOR REQUEST-TO-SEND (RTS) AND CLEAR-TO-SEND (CTS) FRAMES
Abstract
(EN)

This disclosure provides systems, methods, and apparatuses for wireless communication that can be used to reduce the peak-to-average power ratio (PAPR) of data transmissions by increasing the degree of randomness with which data is scrambled for transmission over a wireless medium. In some implementations, a transmitting device may determine a scrambler seed value that includes at least 11 bits, where at least one of the 7 least significant bits (LSBs) of the scrambler seed value has a non-zero value. The transmitting device may generate a scrambling sequence based on the scrambler seed value and a polynomial, may construct a physical layer convergence protocol (PLCP) protocol data unit (PPDU) that includes a multi-user (MU) request-to-send (RTS) frame and the scrambler seed value, may scramble one or more portions of the PPDU based on the scrambling sequence; and may transmit the PPDU over a wireless medium.


Related patent documents