Spatial lbt with broadcast/multicast reception

A broadcasting and receiver technology, applied in the field of wireless communication systems, which can solve problems such as performance degradation

Pending Publication Date: 2020-04-10
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This interference can degrade perfor

Method used

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  • Spatial lbt with broadcast/multicast reception
  • Spatial lbt with broadcast/multicast reception
  • Spatial lbt with broadcast/multicast reception

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Embodiment Construction

[0034] The specific embodiments described below in conjunction with the drawings are intended to describe various configurations, and are not intended to limit the protection scope of the present disclosure. Rather, the detailed description includes specific details for the purpose of providing a thorough understanding of the invention. It will be apparent to those skilled in the art that these specific details are not required in every case, and that in some instances, well-known structures and components are shown in block diagram form for clarity of presentation.

[0035] The present disclosure generally relates to providing or participating in authorized shared access between two or more wireless communication systems (also referred to as wireless communication networks). In various embodiments, techniques and apparatus may be used in wireless communication networks, such as Code Division Multiple Access (CDMA) networks, Time Division Multiple Access (TDMA) networks, Frequ...

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Abstract

Spatial listen before talk (LBT) with broadcasting or multicasting reception is disclosed. Aspects of the disclosure provide for managing spatial LBT transmissions between broadcast communication nodes and neighboring cells. In one aspect, the broadcast transmitter transmits a preamble that identifies the broadcast transmission durations and the non-broadcast durations in the upcoming transmit opportunity. The potential interferer would read the preamble and yield any transmissions during the broadcast durations. Additional aspects provide for a periodic broadcast clear-to-send (CTS) signal transmitted by the broadcast receivers. The interferer may use the broadcast CTS to perform spatial LBT during the broadcast durations. Further aspects allow the broadcast receivers to determine when potential interferers would cause interference above a threshold. In such circumstances, the broadcast receivers would send the CTS to allow the interferer to perform spatial LBT during the broadcast durations.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Patent Application No. 62 / 522,963, filed June 21, 2017, entitled "SPATIAL LBT WITH BROADCAST / MULTICAST RECEPTION," and filed April 9, 2018, entitled "SPATIAL LBT WITH BROADCAST / MULTICAST RECEPTION" of U.S. Nonprovisional Patent Application No. 15 / 948,390, both of which are hereby incorporated by reference in their entirety as fully set forth below and for all applicable purposes. technical field [0003] In general, aspects of the present disclosure relate to wireless communication systems, and more specifically, to spatial listen before talk (LBT) utilizing broadcast or multicast reception. Background technique [0004] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and so on. These wireless networks may be multiple-access networks capable of supporting multiple users by sha...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04W74/00
CPCH04B7/0617H04W74/0816H04L12/189H04W4/06H04W74/006H04W74/08
Inventor 张晓霞范志飞S·A·A·法库里安T·余
Owner QUALCOMM INC
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