[특허]Controller for reducing latency in a group dormancy-wakeup process in a group communication network

Controller for reducing latency in a group dormancy-wakeup process in a group communication network 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04Q-007/20
출원번호	US-0006037 (2001-12-04)
발명자 / 주소	Rosen, Eric Maggenti, Mark
출원인 / 주소	Qualcomm Incorporated
대리인 / 주소	Wadsworth, Philip R.
인용정보	피인용 횟수 : 29 인용 특허 : 6

초록 ▼

대표청구항 ▼

A method and apparatus for reducing latency in a group communication network provides for a significant reduction in the actual total dormancy wakeup time and the PTT latency by exchanging group call signaling even when mobiles are dormant and no traffic channel is active. The method and apparatus provides for exchanging the group call signaling through the use of the short data burst (SDB) message signaling. The method and apparatus provides for reestablishing dedicated traffic channels for the talker mobile and the dormant listener mobiles advantageously in parallel. ise indication circuit according to claim 7, characterized by a second multiplier ( 6) which is adapted to square said noise signal (vd,q(t)) to obtain a squared noise signal &ngr;2d,q(t).10. Noise indication circuit according to claim 9, an averaging circuit ( 7) which is adapted to average said squared noise signal &ngr;2d,q(t) to generate a variance signal that is proportional to a variance signal &sgr;2vdof said noise included in said audio signal.

이 특허에 인용된 특허 (6)

Chinitz Leigh M. ; Needham Michael L. ; Wilson Timothy J., Establishment of multiple low-rate inbound signaling links in CDMA dispatch system.
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Richard Joseph Vilmur, Method and apparatus for group calls in a wireless CDMA communication system using outbound traffic channels for individual group members.
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Mark Maggenti ; Douglas M. Crockett ; Eric Rosen, System and method for providing group communication services in an existing communication system.
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이 특허를 인용한 특허 (29)

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Sayeedi,Shahab M., Apparatus and method for supporting common channel packet data service in a CDMA2000 RAN.
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Yang, Hong Kui; Su, Jing, Method and apparatus for adaptive multi-stage multi-threshold detection of paging indicators in wireless communication systems.
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Hart,Thomas B.; Crocker,Ronald T., Method and apparatus reducing PTT call setup delays.
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Rosen, Eric C.; Maggenti, Mark A.; Crockett, Douglas M., Method of buffering to reduce media latency in group communications on a wireless communication network.
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Sayeedi, Shahab M., Method of supporting reactivation of a dormant session using stored service configurations.
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Serbin,Clay; Cirksena,Scott R.; Teague,Aaron C.; Chhatriwala,Murtuza, Push to talk voice buffering systems and methods in wireless communication calls.
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Chion, Mary; Fang, Yonggang, Trunking and push-to-talk mechanisms for WCDMA wireless communications.
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A	생활필수품
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Controller for reducing latency in a group dormancy-wakeup process in a group communication network 원문보기