Method and apparatus for transmitting digital data packets on a wireless channel
First Claim
1. A method of controlling the transmission of digital data packets from a source station to a destination station in a wireless data communication system having a plurality of stations, comprising the steps of:
- defining successive time intervals (T), said successive time intervals (T) including a current time interval and subsequent time intervals;
for each packet to be transmitted, determining if a predetermined average power level (Po) will be exceeded for the current time interval by the transmission of said packet; and
transmitting said packet during said current time interval only if said predetermined average power level (Po) will not be exceeded and deferring the transmission of said packet to a subsequent one of said successive time interval (T) if said predetermined average power level (Po) will be exceeded for said current time interval.
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Accused Products
Abstract
In a method and apparatus for transmitting digital data packets from a station (12,14) in a wireless communication system, successive time intervals (T) are established and a packet is transmitted only if the transmission thereof does not cause a predetermined average power value (Po) to be exceeded for the current time interval. For each packet an appropriate power value is ascertained from a data base (62), in dependence on the particular destination station to which the packet is to be transmitted. For each time interval (T) a maximum energy value (Io) is decremented in accordance with the energy utilized for transmitting each packet, and a packet is transmitted only if there is sufficient energy remaining to transmit the packet during the current time interval (T).
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Citations
8 Claims
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1. A method of controlling the transmission of digital data packets from a source station to a destination station in a wireless data communication system having a plurality of stations, comprising the steps of:
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defining successive time intervals (T), said successive time intervals (T) including a current time interval and subsequent time intervals; for each packet to be transmitted, determining if a predetermined average power level (Po) will be exceeded for the current time interval by the transmission of said packet; and transmitting said packet during said current time interval only if said predetermined average power level (Po) will not be exceeded and deferring the transmission of said packet to a subsequent one of said successive time interval (T) if said predetermined average power level (Po) will be exceeded for said current time interval. - View Dependent Claims (2, 3, 4, 5)
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6. A wireless data communication station adapted to transmit a digital data packet from a source station to a destination station in a wireless data communication system having a plurality of stations, said data packet containing destination station information identifying said destination station, comprising:
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power level determining means (58,60,62,64) connected to receive said packet destination information for determining a minimum packet power level (Px) which is necessary to transmit said packet to said destination station; attenuation means (72) connected to receive said packet and responsive to said power level determining means to adjust the transmission level of said digital data packet to said determined minimum packet power level (Px); control means (80) connected to monitor said minimum packet power level (Px) for determining if a predetermined average power level (Po) will be exceeded for a predetermined time interval (T) by the transmission of said packet during said time period; and transmission means (74) connected to said attenuation means and responsive to said control means for transmitting said packet during said predetermined time interval (T) only if said predetermined average power level (Po) will not be exceeded and deferring the transmission of said packet to a subsequent time interval if said predetermined average power level (Po) will be exceeded for said predetermined time interval (T). - View Dependent Claims (7, 8)
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Specification