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Communication apparatus and communication method

A communication device, signal technology, applied in the direction of safety communication device, communication between multiple stations, digital transmission system, etc.

Inactive Publication Date: 2001-12-19
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In this way, in the H.245 standard, the communication terminal A cannot transmit the control data A-2 until the reception confirmation signal 2 is received, so the waiting time shown in FIG. 1 related to the transmission of the control data A-2 occurs.

Method used

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  • Communication apparatus and communication method
  • Communication apparatus and communication method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The communication device and the communication method according to Embodiment 1 of the present invention associate a plurality of control data that can be sent centrally or a plurality of asynchronously generated control data, multiplex the plurality of control data according to the association, and transmit them as one packet.

[0027] Hereinafter, the communication apparatus and the communication method according to the first embodiment of the present invention will be described with reference to FIG. 2 . FIG. 2 is a block diagram showing a main part of a schematic configuration of a communication apparatus according to Embodiment 1 of the present invention.

[0028] The control data management unit 102 , which has instructed the start of communication from the terminal control unit 101 , outputs the control data transmission instruction to the control data transmission unit 103 . The control data transmission unit 103 that has received the transmission instruction ge...

Embodiment 2

[0057] The communication apparatus and communication method of this embodiment differ from Embodiment 1 in that a plurality of control data multiplexed according to the association are further multiplexed and transmitted as one packet.

[0058] Hereinafter, a communication apparatus and a communication method according to Embodiment 2 of the present invention will be described with reference to FIG. 6 and FIG. 7 . FIG. 6 is a main part block diagram showing a schematic configuration of the communication apparatus according to Embodiment 2 of the present invention, and FIG. 7 is a sequence diagram showing the exchange of control data by a communication terminal including the communication apparatus according to Embodiment 2 of the present invention. In FIG. 6 , the same components as those in Embodiment 1 are assigned the same reference numerals, and detailed descriptions thereof are omitted.

[0059] Since the control data processing unit 501 cannot transmit the multiplexed co...

Embodiment 3

[0063] The communication apparatus and communication method of this embodiment differ from Embodiment 2 in that the control data multiplexed among a plurality of groups is transmitted at a predetermined time interval instead of transmitting at the time of reception of the reception acknowledgment signal.

[0064] Hereinafter, a communication apparatus and a communication method according to Embodiment 3 of the present invention will be described with reference to FIG. 8 and FIG. 9 . 8 is a main part block diagram showing a schematic configuration of a communication apparatus according to Embodiment 3 of the present invention, and FIG. 9 is a sequence diagram showing a state in which a communication terminal including the communication apparatus according to Embodiment 3 of the present invention exchanges control data. In FIG. 8 , the same components as those in the second embodiment are assigned the same reference numerals, and detailed descriptions thereof are omitted.

[006...

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Abstract

The association storage unit 105 stores a predetermined table in which each control data is grouped and associated by various types (per message unit). The control data synchronization unit 104 sequentially stores the input control data in the control data storage unit 106 . At this time, the control data synchronization unit 104 refers to the table stored in the association storage unit 105, and stores a plurality of control data in association with each group. Through such an operation, a plurality of control data are multiplexed in each group, and are used as one data in units of groups. Then, the control data processing unit 107 generates multiplexed control data multiplexed in each group as one packet, and transmits it to the communication partner.

Description

technical field [0001] The present invention relates to a communication device and a communication method, and more particularly, to a communication device and a communication method used in multimedia communication in the ITU (International Telecommunication Union). Background technique [0002] Conventionally, in digital communication, moving image signals, voice signals, etc. are compressed according to a compression method of a predetermined standard, multiplexing the compressed image stream, voice stream, etc., and transmitting the multiplexed stream data. multimedia communication. [0003] Before the transmission of streaming data starts, the communication terminals exchange control data related to the moving picture coding method, the speech coding method, or the data transmission method. Then, after deciding which method to perform communication within the capability of the communication terminal, prepare resources required for communication, etc., and then start st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06
CPCH04L65/1066H04L69/04H04L67/14H04L69/24H04L65/1106H04B7/26H04L69/32H04L9/40
Inventor 横山洋儿
Owner PANASONIC CORP