US 2019/0104548 A1 · UNIVERSAL RESERVATION SIGNAL DESIGN FOR WIFI AND NR-SS

Abstract

A universal Channel Reservation Signal (CRS) is transmitted by a wireless network node on a frequency channel upon successful Clear Channel Assessment (CCA). The channel reservation signal includes a preamble that has a predetermined pattern, a message having a same short period waveform as the preamble, and a synchronization field (SYNC) disposed between the preamble and the message. The message is encoded to prevent any and all occurrences therein of at least one of the predetermined pattern or a combination of the predetermined pattern and at least part of the SYNC. The universal CRS can be transmitted and successfully received and processed by both NR-SS devices and devices of at least one other wireless communication protocol having a different numerology, such as WiFi. Thus, information can be shared and used to avoid transmitting or to reduce or avoid collisions and interference between devices of different RATs.

Claims30

Dependent claims

A method of wireless communication, the method comprising:

performing, by a wireless network node, a successful clear channel assessment (CCA) on a frequency channel in accordance with a listen before talk (LBT) protocol procedure;
generating a channel reservation signal, by the wireless network node, wherein the channel reservation signal includes a preamble that has a predetermined pattern, a message having a same short period waveform as the preamble, and a synchronization field (SYNC) disposed between the preamble and the message, and wherein the message is encoded to prevent any and all occurrences therein of at least one of the predetermined pattern or a combination of the predetermined pattern and at least part of the SYNC;
and
transmitting, by the wireless network node in response to the successful CCA, the channel reservation signal on the frequency channel.

1 more element

An apparatus configured for wireless communication, the apparatus comprising:

at least one processor;
and
a memory coupled with the at least one processor, wherein the memory includes instructions executable by the processor to cause the apparatus to:
perform a successful clear channel assessment (CCA) on a frequency channel in accordance with a listen before talk (LBT) protocol procedure;
generate a channel reservation signal wherein the channel reservation signal includes a preamble that has a predetermined pattern, a message having a same short period waveform as the preamble, and a synchronization field (SYNC) disposed between the preamble and the message, and wherein the message is encoded to prevent any and all occurrences therein of at least one of the predetermined pattern or a combination of the predetermined pattern and at least part of the SYNC;
and
transmit, in response to the successful CCA, the channel reservation signal on the frequency channel.

4 more elements

Dependencies are inferred from the claim text.

Universal reservation signal design for wifi and nr-ss

Life of this patent

Universal reservation signal design for wifi and nr-ss

Life of this patent

Abstract

Claims30