公开(公告)号：US20150024687A1

公开(公告)日：2015-01-22

申请号：US13947769

申请日：2013-07-22

Applicant: QUALCOMM Incorporated

Inventor： Abhishek RAWAT ,  Eric Yuchuen TSOU ,  Jibing WANG ,  Ductuan Do NGUYEN

IPC: H04W88/06 ,  H04W4/00

CPC classification number: H04W88/06 ,  H04W4/80 ,  H04W16/14 ,  H04W72/1215 ,  H04W84/12

Abstract: Use is made of the Notice-of-Absence (NoA), as is a Wi-Fi/Bluetooth time sharing mechanism. This mechanism dictates ‘n’ cycles of absent and present duration of P2P-GO starting at a defined time ‘t’. The information bits of NoA are communicated from GO to the Client in the Beacons (for the period of NoA in use). Time-sharing between Bluetooth and WLAN at P2P-GO, is communicated using NoA to the P2P-Client. For the duration of both Bluetooth and WLAN radios transmitting/receiving traffic, NoA is used such that the absent duration covers the Bluetooth Interval and present-duration covers the WLAN interval. This NoA remains effective for as long as the time-sharing mode between BT and WLAN radios. As soon as, P2P-GO enters the time-sharing mode, NoA parameters are determined based on the timesharing mode (Dynamic Long and Dynamic Short). The start time of NoA schedule is determined after synchronizing to the time-sharing scheduler. The start time of NoA schedule is ‘n’ TBTTs after entering the time-sharing mode so that the Clients have ample opportunity to receive the NoA information. Until NoA schedule starts, P2P-GO may protect Bluetooth Interval using CTS2S frames. After NoA schedule comes into play, P2P-GO may send CTS2S only for asynchronous Bluetooth traffic.

Abstract translation: 使用无线通知（NoA），以及Wi-Fi /蓝牙时间共享机制。 该机制规定了在定义的时间't'开始的P2P-GO的缺席和存在持续时间的“n”个周期。 NoA的信息位从GO发送到Beacon中的客户端（在使用中的NoA期间）。 P2P-GO之间的蓝牙和WLAN之间的时间分配使用NoA传送给P2P客户端。 在蓝牙和WLAN无线电发射/接收业务的持续时间内，使用NoA，使得缺席时间覆盖蓝牙间隔，并且持续时间覆盖WLAN间隔。 只要BT和WLAN无线电之间的分时模式，此NoA仍然有效。 一旦P2P-GO进入分时模式，将根据分时模式（Dynamic Long and Dynamic Short）确定NoA参数。 NoA计划的开始时间在同步到分时调度器之后确定。 NoA计划的开始时间在进入分时模式后为'n'TBTT，以便客户端有充足的机会接收NoA信息。 直到NoA计划开始，P2P-GO可以使用CTS2S帧保护蓝牙间隔。 在NoA计划发布后，P2P-GO可能只发送CTS2S用于异步蓝牙流量。