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Method and device for optimizing push to talk time delay

A delay and initialization protocol technology, applied in the field of communication, can solve the problem of large delay in initial establishment of PoC sessions, and achieve the effect of reducing initial establishment delay and delay difference

Active Publication Date: 2013-08-07
HUAWEI TECH CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The inventor found in the process of implementing the present invention that: since the time delay for MT to enter the Right_To_Listen state is less than the time delay for MO to enter the Right_To_Speak state, resulting in a large delay in the initial establishment of the PoC session

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  • Method and device for optimizing push to talk time delay
  • Method and device for optimizing push to talk time delay
  • Method and device for optimizing push to talk time delay

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] For the broadcast and multicast bearer (such as MBMS) PoC downlink data scheme, after the MT is called, it does not need to allocate special transmission resources, but only needs to use the MBMS public bearer to realize the transmission of PoC downlink data; in this way, if The PoC session information can be acquired in advance, and the MT can enter the Right_To_Listen state before the PDP context is activated to join the PoC group, and receive downlink data...

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Abstract

The embodiment of the invention discloses a method and a device for optimizing push to talk time delay, wherein the method for optimizing the optimizing push to talk time delay comprises the following steps of: acquiring called paging related information and push to talk conversation information; and sending a paging message containing the push to talk conversation information to a called party indicated by the called paging related information. The invention enables MT (Mobile Terminated) UE (User Equipment) to enter a Right_to_Listen state in advance by carrying PoC (Push to Talk overCellular) service conversation related information in the paging message sent to the MT UE on a GPRS (General Packet Radio Service) supporting node, thereby reducing the time delay difference of the MT UE entering the Right_to_Listen state and MO (Mobile Originated) entering a Right_to_Speak state and then reducing the initial establishment time delay of a PoC conversation.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a method and device for optimizing push-to-talk delay. Background technique [0002] The Session Initiation Protocol (SIP) based on the Internet Protocol (Internetwork Protocol, IP) is an application layer protocol, which can be used to perform control functions such as establishing, modifying, and terminating a Push to Talk over Cellular (PoC) session . [0003] Such as figure 1 As shown, the control of the cluster session service PoC is realized based on the SIP protocol. The establishment of a PoC session requires the calling (Mobile Originated, MO) user equipment (User Equipment, UE) to use the SIP Invite (Invite) message to initiate a session request to the called (Mobile Terminated, MT) UE, and the SIP Invite message carries PoC session related information , execute the SIP process; the calling UE receives the SIP request success (200OK) response and learns that t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/10H04W12/02H04W68/00
Inventor 李秉肇朱雷陈燕燕王建林
Owner HUAWEI TECH CO LTD
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