that the aspects described in the respective embodiments are preferred examples of the packet communication system according to the present invention accordingly the present invention is not limited to the aspects described herein for example in each of the foregoing embodiments descriptions have been made regarding the examples in which the control technique for packet transmission according to the present invention is applied to the mobile node and the mobility agent however without limiting to these nodes the above control technique is also applicable to other communication apparatuses such as a router for transmitting a plurality of packets to a desired destination node moreover in each of the foregoing embodiments a description has been made regarding the control technique for packet transmission in the event of the release of buffering however the above described control technique is also applicable to the case where the application requires packet transmission at a shorter transmission interval furthermore in each of the foregoing embodiments descriptions have been made based on the assumption that the mobile node is a mobile telephone however the mobile node may be any information equipment having a wireless communication function such as a personal digital assistance pda lastly a description is provided concerning a program for achieving the packet transmission control technique according to the present invention and a computer readable recording medium which records the program hereinafter simply referred to as the u201c recording medium u201d the recording medium is designed to impart a state of energy changes in magnetism light electricity or the like to a reading apparatus provided on hardware resources such as a general purpose computer in response to the contents of description of.