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Data retransmission in a push to talk system.

A technology of audio data and buttons, which is applied in the field of audio data retransmission, and can solve problems such as inconvenient repetition

Inactive Publication Date: 2009-07-22
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the receiver continues to be unable to receive audio data, the sender must inconveniently repeat the above retransmission process again and again

Method used

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  • Data retransmission in a push to talk system.
  • Data retransmission in a push to talk system.
  • Data retransmission in a push to talk system.

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Embodiment Construction

[0025] A preferred embodiment relates to a method for retransmitting lost audio data in a push to communicate (PTx) communication network. In a PTx communication network, a sending communication device can unicast or multicast audio data to one or more devices in the network. After pressing the PTx key of the PTx communication device, the user can input audio data. The incoming audio data is temporarily stored so that the stored data can be retransmitted in case the first transmission is not successful.

[0026] see figure 1 , a PTx communication session can be established between the sending PTx end and the receiving PTx end through RTP (Real-time Transport Protocol). RTP is IP (Internet Protocol) that supports real-time transmission of voice and video. RTP is widely used for IP telephony and audio and video streaming. RTP packets are delivered on top of UDP (User Datagram Protocol) and include timestamps and synchronization information in their headers for proper reassem...

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PUM

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Abstract

An audio data retransmission method in a push to communicate (PTx) terminal for transmitting data by pressing a PTx key is provided. The method comprises transmitting data using a transmitting PTx terminal; storing the data in a buffer; and retransmitting the data when a receiver requests retransmission due to a loss in communication.

Description

technical field [0001] The present invention relates to a push-to-communication (PTx) or push-to-talk (PTT) communication device or terminal, and in particular to a method for retransmitting audio data in a PTx communication network. Background technique [0002] A push-to-talk (PTT) terminal generally refers to a terminal that allows real-time communication between at least two parties, eg, from a sender to a receiver. The sender presses a specific key on the sending PTT before starting the call. The sending PTT then sends the associated audio data to one or more receiving PTTs. [0003] When the PTT key is not pressed, the sending PTT end can also receive audio data or remain in standby mode. The PTT side performs one-to-one or one-to-many communication, especially working in half-duplex mode. Usually the PTT side groups the audio data and sends the audio data in packets via the CDMA or GSM network. The corresponding audio data is sent to the destination by using VolP ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/08H04L1/16H04Q7/28H04B1/40H04M1/00H04M11/00H04W4/10H04W28/04H04W76/02H04W84/08
CPCH04W4/10H04W76/005H04L65/4061H04L29/06217H04L29/06442H04L65/1016H04W28/04H04W76/45
Inventor 林国赞
Owner LG ELECTRONICS INC