Signal transmission method from a local network node
First Claim
1. A transmitter comprising:
- a memory for storing a first data that is to be transmitted, and a second data that has been transmitted;
a processor for receiving requests to re-transmit the second data from the memory;
a monitor for receiving, from user equipment, power control commands indicating a change in power to maintain, at a predetermined level, a power of a transmission link between the transmitter and a receiver associated with the user equipment and for separately summing a number of power control commands indicating that an increase in power is necessary and a number of power control commands indicating that a reduction in power is necessary over a predetermined period of time;
a power control unit electrically connected to the monitor, and configured to;
control the power of the transmission link such that the power is temporarily higher than the pre-determined level; and
maintain the power of the transmission link at a previous level after receiving a power control command from the user equipment that requests a reduction in power; and
a data control unit configured to schedule the second data for re-transmission in periods when the power of the transmission link is higher than the pre-determined level based at least in part on a difference in sums.
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Accused Products
Abstract
A transmitter is provided having transmission methods that minimize the power needed to ensure reliable reception in a coverage area. In one aspect, data that requires re-transmission as acknowledged mode data is re-transmitted when the power level of the transmission link is higher than a pre-determined level set for reliable reception. The data rate of the re-transmitted data is set according to the difference in the actual power and the pre-determined level. In a second aspect, two transmitting antennae are used to transmit the same signals with a frequency off-set. The frequency off-set can be used to determine the phase of the signals being received at the receiver, so that a phase off-set can be introduced to optimise the effect of interference at the receiver.
162 Citations
21 Claims
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1. A transmitter comprising:
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a memory for storing a first data that is to be transmitted, and a second data that has been transmitted; a processor for receiving requests to re-transmit the second data from the memory; a monitor for receiving, from user equipment, power control commands indicating a change in power to maintain, at a predetermined level, a power of a transmission link between the transmitter and a receiver associated with the user equipment and for separately summing a number of power control commands indicating that an increase in power is necessary and a number of power control commands indicating that a reduction in power is necessary over a predetermined period of time; a power control unit electrically connected to the monitor, and configured to; control the power of the transmission link such that the power is temporarily higher than the pre-determined level; and maintain the power of the transmission link at a previous level after receiving a power control command from the user equipment that requests a reduction in power; and a data control unit configured to schedule the second data for re-transmission in periods when the power of the transmission link is higher than the pre-determined level based at least in part on a difference in sums. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of transmitting data from a transmitter to a receiver associated with an user equipment, the method comprising:
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transmitting a first data from the transmitter to the receiver; storing the first data that has been transmitted as a second data; receiving requests from the receiver to re-transmit the second data; receiving power control commands indicating a change in power to maintain, at a predetermined level, a power of a transmission link between the transmitter and the receiver; separately summing a number of power control commands indicating that an increase in power is necessary and a number of power control commands indicating that a reduction in power is necessary over a predetermined period of time; controlling the power of the transmission link such that the power is temporarily higher than the pre-determined level; and scheduling the second data for re-transmission in periods when the power of the link is higher than the predetermined level based at least in part on a difference in sums; wherein the power of the transmission link is controlled to be maintained at a previous level after receiving a power control command from the user equipment that requests a reduction in power. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification