公开(公告)号：EP1719355A4

公开(公告)日：2007-08-22

申请号：EP03796738

申请日：2003-11-26

Applicant: IBM

Inventor： ARUP ACHARYA ,  DILIP KANDLUR ,  ZON-YIN SHAE

IPC: H04L12/28 ,  H04L29/06 ,  H04W74/06 ,  H04W76/02 ,  H04W88/16

CPC classification number: H04W76/022 ,  C23C16/4408 ,  H04L29/06027 ,  H04L65/1006 ,  H04L65/80 ,  H04W74/06 ,  H04W88/16

Abstract: The present invention provides a method and system for providing quality-of-service to VoIP over a wireless local access network by providing periodic, contention-free access to a wireless link for voice packets. This is achieved by coupling Session Initiation Protocol (“SIP”) signaling for call setup with the Point Coordination Function mode of operation of the 802.11 medium access control. The result is that VoIP call signaling via SIP is tied with availability of periodic time-slots on the wireless medium. The periodic time-slots are used to guarantee contention-free access to the wireless link for voice packets. Accordingly, the present invention, in effect, merges two networking technologies: SIP-based VoIP and 802.11-based wireless LANs.

公开(公告)号：AU2003298017A1

公开(公告)日：2005-07-21

申请号：AU2003298017

申请日：2003-11-26

Applicant: IBM

Inventor： ARUP ACHARYA ,  DILIP KANDLUR ,  ZON-YIN SHAE

IPC: H04L29/06 ,  H04W74/06 ,  H04W76/02 ,  H04W88/16 ,  H04Q7/20

Abstract: The present invention provides a method and system for providing quality-of-service to VoIP over a wireless local access network by providing periodic, contention-free access to a wireless link for voice packets. This is achieved by coupling Session Initiation Protocol (“SIP”) signaling for call setup with the Point Coordination Function mode of operation of the 802.11 medium access control. The result is that VoIP call signaling via SIP is tied with availability of periodic time-slots on the wireless medium. The periodic time-slots are used to guarantee contention-free access to the wireless link for voice packets. Accordingly, the present invention, in effect, merges two networking technologies: SIP-based VoIP and 802.11-based wireless LANs.

公开(公告)号：BRPI0418442B1

公开(公告)日：2018-02-27

申请号：BRPI0418442

申请日：2004-06-17

Applicant: IBM

Inventor： ARUP ACHARYA ,  EDITH HELEN STERN ,  JAMES EDWARD CHRISTENSEN ,  ROSE MARIE WILLIAMS ,  ZON-YIN SHAE

IPC: H04L12/66 ,  H04L29/06 ,  H04L29/08 ,  H04L29/12

Abstract: método, sistema e serviço para alcançar comunicação síncrona em resposta a estado dinâmico. método para roteamento de uma solicitação de conexão de comunicação inclui as etapas de obtenção de informação de contexto de uma solicitação de conexão de comunicação em resposta a uma solicitação de conexão de comunicação. as etapas ainda incluem o uso da informação de contexto para determinar uma ação de conexão de comunicação e conexão do solicitante de conexão de comunicação com base na ação de conexão.