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Method and system for realizing continuity of mobile network PTT service

A mobile network and continuous technology, applied in the field of mobile communication, can solve the problem that users cannot receive group information, achieve the effect of improving user experience and ensuring no loss

Active Publication Date: 2010-08-25
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the user moves out of the multicast area, due to the complexity of two-way switching between unicast and multicast, the user cannot receive the information of the relevant group

Method used

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  • Method and system for realizing continuity of mobile network PTT service
  • Method and system for realizing continuity of mobile network PTT service
  • Method and system for realizing continuity of mobile network PTT service

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Embodiment Construction

[0021] With the development of communications, operators can classify users into general users and privileged users according to their purchasing power and spending power. For general users, the multicast method is used in the downlink, and they can only be active within the designated broadcast range, such as the range of frequent activities, office building annexes or other locations. When within this range, they can initiate, delay join, and receive The group information, however, cannot initiate, delay joining, or receive the group information when moving out of the area. For privileged users, the current existing solution is that when the privileged user moves out of the area, he can actively initiate a multicast group call or delay joining the multicast group, but cannot passively receive related multicast group information.

[0022] The present invention is based on the broadcast multicast group of the existing mobile communication network. When the privileged user is o...

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Abstract

The invention discloses a method and a system for realizing the continuity of a mobile network PTT service. The method comprises the following steps of: when a privileged user moves out of an area from the area, triggering a position information change process by using a PTT client; reporting state information to a PTT server through a mobile network; according to the state information, judging whether the privileged user is in a broadcast area; if the privileged user is not in the broadcast area, adding a unicast identification of the privileged user in a multicast group; generating a call announcement message; awaking the PTT client through the mobile network in a unicast group paging mode; after receiving paging, participating in a conversation by using the PTT client in a common unicast mode. By using the method and the system, when a multicast user in a fixed area moves out of the area, related group information can be received continuously, so that the method and the device ensure that information is not lost and enhance user experience.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and in particular relates to a method and a system for realizing PTT service continuity of a mobile network. Background technique [0002] Currently, mobile communication networks are moving from the 2.5G era to the 3G era with higher transmission rates. In this process, the voice service will still occupy a dominant position in the mobile communication service. The increasing competition in the mobile communication market and the difficulties in promoting new systems such as 3G have made operators focus on improving the quality of existing networks and innovating services. In this form, the success of PTT business in some markets strongly attracts the attention of mobile operators. With the development of VOIP and other technologies, since 2003, mobile operators have begun to provide "Push to Talk" service (PTT) through 2.5G network, also known as PoC (PTT over Cellular). [0003...

Claims

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Application Information

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IPC IPC(8): H04W4/06H04W4/10H04W4/16
Inventor 朱红梅李宝荣曹磊赵晔陈洁王庆扬
Owner CHINA TELECOM CORP LTD