| 摘要 |
TRANSMISSION POWER IN A FREQUENCY-HOPPING RADIO SYSTEM THAT TRANSMITS PACKETS FROM A SENDING RADIO UNIT TO A RECEIVING RADIO UNIT, WHEREIN EACH PACKETINCLUDES AN ADDRESS DESIGNATING THE RECEIVING RADIO UNIT, IS CONTROLLED BY MEASURING RECEIVED SIGNAL STRENGTH OF PACKETS WHOSE ADDRESS WERE SUCCESSFULLY RECEIVED IN THE RECEIVING RADIO UNIT, REGARDLESS OF WHETHER OTHER PORTIONS OF THE RESPECTIVE PACKETS WERE SUCCESSFULLY RECEIVED. AN AVERAGE SIGNAL STRENGTH VALUE IS GENERATED FROM THE RECEIVED SIGNAL STRENGTH MEASUREMENTS. THE MATHEMATICAL DIFFERENCE BETWEEN THE AVERAGE SIGNAL STRENGTH VALUE AND A TARGET ASSOCIATED WITH THE RECEIVING RADIO UNIT IS THEN DETERMINED AND USED AS A BASIS FOR DECIDING WHETHER TO SEND A POWER CONTROL MESSAGE FROM THE RECEIVING RADIO UNIT TO THE SENDING RADIO UNIT. IN ORDER TO PROVIDE A HYSTERESIS IN THE POWER CONTROL PROCESS, A POWER CONTROL MESSAGE IS SENT FROM THE RECEIVING RADIO UNIT TO THE SENDING RADIO UNIT IF THE MATHEMATICAL DIFFERENCE IS GREATER THAN A FIRST DECISION BOUNDARY, OR IF THE MATHEMATICAL DIFFERENCE IS LESS THAN A SECOND DECISION BOUNDARY. THE POWER CONTROL MESSAGE MAY IT SELF INCLUDE THE MATHEMATICAL DIFFERENCE WHICH, WHEN RECEIVED BY THE SENDING RADIO UNIT, IS USED AS A BASIS FOR DETERMINING A TRANSMISSION POWER LEVEL ADJUSTMENT AMOUNT. THE TARGET VALUE, AGAINST WHICH THE AVERAGE SIGNAL STRENGTH VALUE IS COMPARED, MAY BE BASED ON THE RECEIVER SENSITIVITY ADJUSTED TO ACCOUNT FOR IMPLEMENTATION LOSSES AND OTHER INACCURACIES.FIGURE 3
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