Unlock instant, AI-driven research and patent intelligence for your innovation.

Block transmit-receiving device and block transmission method

一种分组发送、已发送的技术，应用在传输系统、数字传输系统、安全通信装置等方向，能够解决压缩效率差等问题

Inactive Publication Date: 2008-10-08
PANASONIC CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0047] However, in conventional devices, when the order of packets alternates and the value of SN decreases without monotonically increasing, or increases with a large value, it is transmitted using a packet format in which SN has a wide expressible range.
As a result, there is a problem of poor compression efficiency when data is transmitted in a packet format that requires a large area on the SN.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Block transmit-receiving device and block transmission method
  • Block transmit-receiving device and block transmission method
  • Block transmit-receiving device and block transmission method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] First, the sending side will be explained. Figure 6 is a block diagram showing the structure of a packet transmitting and receiving device according to an embodiment of the present invention.

[0075] exist Figure 6 Among them, the packet transmitting and receiving device 100 is mainly composed of an SN checking unit 101 , a CID selecting unit 102 , a CRC bit calculating unit 103 , a header compressing unit 104 , a transmitted packet storing unit 105 , a transmitting unit 106 , and an antenna 107 .

[0076] The SN checking unit 101 monitors the SN of the transmission data in units of packets, and compares the SN of the transmission target with the SN of the preceding packet of the transmission target. Then, the comparison result and the transmission data (packet) are output to the CID selection unit 102 .

[0077] The CID selection unit 102 selects a CID based on the comparison result output from the SN check unit 101 , adds it to the transmission data (packet), and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

SN examine section 101 monitors transmission data by way of monitoring an SN per packet, compares the SN in a packet that is to be transmitted with the SN in an immediately preceding packet, and outputs the comparison result to CID selection section 102 with transmission data. CID selection section 102 selects a CID based on the comparison result output from SN examination section 101 and appends the CID to the transmission data, and outputs the transmission data to header compression section 104. CRC bit calculation section 103 calculates a CRC bit from the header information. Header compression section 104 determines on a header compression format, compresses a header that contains an SN and a CRC bit, and connects the header with transmission data and transmit this to transmission section 106. Transmission packet storing section 105 that stores transmitted packets.

Description

technical field [0001] The present invention relates to a packet transmitting and receiving device and a packet transmission method, in particular to a packet transmitting and receiving device and a packet transmission method suitable for wireless communication. Background technique [0002] Currently, there are RTP (Real-time Transport Protocol; Real-time Transport Protocol), UDP (User Data Protocol; User Data Protocol), IP (Internet Protocol; Internet Protocol), in packet transmission, these protocols are generally used in combination. Furthermore, these protocols are standardized by IETF (Internet Engineering Task Force; Internet Engineering Task Force). [0003] In each of the above-mentioned protocols, the following information is added as a header to transmission data to generate a packet. That is, first, in RTP, a serial number (hereinafter abbreviated as 'SN' as necessary) indicating the order of data, a time stamp (hereinafter abbreviated as 'TS' as necessary) and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L47/43H03M7/30
CPCH04L29/06095H04L29/06122H04L29/0653H03M7/30H04L29/06102H04L29/0604H04L69/161H04L69/04H04L69/164H04L69/22H04L29/06H04L69/16H04L9/40
Inventor 井户大治井村康治宫崎秋弘畑幸一卡斯滕·伯梅斯特
Owner PANASONIC CORP