ITU-R QUESTION 158-15-2000 Packet data transmission protocols for systems operating below about 30 MHz《用于低于30MHz工作的系统的分组数据传输协议》.pdf

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1、QUESTION ITU-R 158-1/5*,*Packet data transmission protocols for systemsoperating below about 30 MHz(1990-2000)The ITU Radiocommunication Assembly,consideringa) that there is an increasing demand for the transfer of large amounts of information over HFradio circuits, notably for Internet protocol app

2、lications;b) that there is a need to provide a virtually error free digital data service over HF radiosystems;c) that there is a demand for interfacing these systems between the supplier and users ofinformation so as to provide automatic utilization of data;d) that the results of a study into packet

3、 transmission protocols may enable improvements tobe made in the efficiency of the HF radio channel,decides that the following Questions should be studied1 What type of packet protocol is best suited for HF radio data systems, including Internetprotocol applications?2 What method of error detection,

4、 and correction and what packet size should be used?3 What design precautions and technical operational procedures should be employed?4 What methods of synchronization should be used for bit timing and packet framing?5 What should be the packet structure for interfacing to other data packet networks?NOTE 1 See Recommendation ITU-R F.764._* This Question should be brought to the attention of Radiocommunication Study Group 8.* Former Question ITU-R 158-1/9.