| 摘要 |
<p>PURPOSE:To modify the allocation of up and down frequencies and to attain a more efficient wireless transmission line by mixing a wireless channel handling an up traffic and a wireless channel handling a down traffic. CONSTITUTION:A host computer 10 is connected to DETs 1 and 2 through MODEMs 11 and 12. The DETs 1 and 2 show the transmission and reception of wireless signal by MODEMs 21 and 31. The MODEMs 11 and 12 transmit and receive with the MODEMs 21 and 31, respectively. The DTE 1 uses the up frequency f1 and the down frequency F1, whereas the DTE 2 uses the up frequency F1 and the down frequency f1. That is the case where two DETs share one set of channels. Normally N-DTEs share M-sets of channels(N>=M). In such a case, the up and down frequencies are mixed, and channels are allocated so as to attain the balanced traffic. As a result, the using efficiency of a frequency can be improved.</p> |
