Apparatus and method for transmitting/receiving uplink transmission power offset and HS-DSCH power level in a communication system employing HSDPA
First Claim
1. A Node B apparatus for transmitting an uplink power offset and a downlink data channel power level in a high-speed packet data communication system, comprising:
- an uplink power offset determiner for measuring a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment), comparing a difference between the measured SIR and a preset target SIR with preset thresholds, and determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison;
a downlink data channel power level determiner for determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to a channel condition with the UE, and determining a downlink data channel power level which is channel gain-related control information of the downlink data channel, when the determined modulation technique is a high-order modulation technique; and
a transmitter for transmitting over a downlink the uplink power offset or the downlink data channel power level to the UE.
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Accused Products
Abstract
A high-speed packet data communication system, wherein a channel condition determiner measures a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE, and calculates a difference between the measured SIR and a preset target SIR; a transmission power determiner compares the difference with preset thresholds, and determines an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison; and a transmitter transmits over a downlink the determined uplink power offset to the UE.
162 Citations
37 Claims
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1. A Node B apparatus for transmitting an uplink power offset and a downlink data channel power level in a high-speed packet data communication system, comprising:
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an uplink power offset determiner for measuring a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment), comparing a difference between the measured SIR and a preset target SIR with preset thresholds, and determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison;
a downlink data channel power level determiner for determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to a channel condition with the UE, and determining a downlink data channel power level which is channel gain-related control information of the downlink data channel, when the determined modulation technique is a high-order modulation technique; and
a transmitter for transmitting over a downlink the uplink power offset or the downlink data channel power level to the UE. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for transmitting/receiving an uplink power offset and a downlink data channel power level in a high-speed packet data communication system, comprising:
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a Node B for measuring a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment), comparing a difference between the measured SIR and a preset target SIR with preset thresholds, determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison, determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to a channel condition with the UE, determining a downlink data channel power level which is channel gain-related control information of the downlink data channel when the determined modulation technique is a high-order modulation technique, and transmitting the uplink power offset or the downlink data channel power level to the UE over a downlink; and
the UE for receiving an uplink power offset transmitted over the downlink, controlling transmission power of the currently transmitted second uplink dedicated channel according to the uplink power offset, receiving the downlink data channel power level over the downlink, and demodulating the packet data according to the received downlink data channel power level. - View Dependent Claims (8, 9, 10)
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11. A method for controlling a Node B apparatus for transmitting an uplink power offset and a downlink data channel power level in a high-speed packet data communication system, comprising the steps of:
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measuring a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment), comparing a difference between the measured SIR and a preset target SIR with preset thresholds, and determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison;
determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to a channel condition with the UE, and determining a downlink data channel power level which is channel gain-related control information of the downlink data channel, when the determined modulation technique is a high-order modulation technique; and
transmitting over a downlink the uplink power offset or the downlink data channel power level to the UE. - View Dependent Claims (12, 13, 14, 15)
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16. A method for transmitting/receiving an uplink power offset and a downlink data channel power level in a high-speed packet data communication system, comprising the steps of:
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measuring, by a Node B, a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment), comparing a difference between the measured SIR and a preset target SIR with preset thresholds, determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison, determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to a channel condition with the UE, determining a downlink data channel power level which is channel gain-related control information of the downlink data channel when the determined modulation technique is a high-order modulation technique, and transmitting the uplink power offset or the downlink data channel power level to the UE over a downlink; and
receiving, by the UE, an uplink power offset transmitted over the downlink, controlling transmission power of the currently transmitted second uplink dedicated channel considering the uplink power offset, receiving the downlink data channel power level over the downlink, and demodulating the packet data according to the received downlink data channel power level. - View Dependent Claims (17, 18)
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19. A method for controlling uplink transmission power in a high-speed packet data communication system, comprising the steps of:
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measuring a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment);
calculating a difference between the measured SIR and a preset target SIR, comparing the difference with preset thresholds, and determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison; and
transmitting over a downlink the determined uplink power offset to the UE. - View Dependent Claims (20, 21)
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22. An apparatus for controlling uplink transmission power in a high-speed packet data communication system, comprising:
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a channel condition determiner for measuring a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment), and calculating a difference between the measured SIR and a preset target SIR;
a transmission power determiner comparing the difference with preset thresholds, and determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison; and
a transmitter for transmitting over a downlink the determined uplink power offset to the UE. - View Dependent Claims (23)
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24. A method for controlling uplink transmission power in a high-speed packet data communication system, comprising the steps of:
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measuring, by a Node B, a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment);
calculating, by the Node B, a difference between the measured SIR and a preset target SIR, comparing the difference with preset thresholds, determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison, and transmitting over a downlink the determined uplink power offset to the UE; and
upon receiving the uplink power offset over the downlink, controlling, by the UE, transmission power of the currently transmitted second uplink dedicated channel according to the uplink power offset. - View Dependent Claims (25, 26)
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27. An apparatus for controlling uplink transmission power in a high-speed packet data communication system, comprising:
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a Node B for measuring a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment), calculating a difference between the measured SIR and a preset target SIR, comparing the difference with preset thresholds, determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison, and transmitting over a downlink the determined uplink power offset to the UE; and
the UE for receiving the uplink power offset over the downlink, and controlling transmission power of the currently transmitted second uplink dedicated channel according to the uplink power offset. - View Dependent Claims (28, 29)
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30. A method for transmitting a downlink data channel power level in a high-speed packet data communication system, comprising the steps of:
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estimating a channel condition with a UE (User Equipment), and determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to the estimated channel condition;
determining a downlink data channel power level which is channel gain-related control information of the downlink data channel, when the determined modulation technique is a high-order modulation technique; and
transmitting over a downlink the determined downlink data channel power level to the UE so that the UE demodulates the packet data using the downlink data channel power level. - View Dependent Claims (31)
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32. An apparatus for transmitting a downlink data channel power level in a high-speed packet data communication system, comprising:
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a modulation technique determiner for determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to a channel condition with a UE (User Equipment);
a downlink data channel power level determiner for determining a downlink data channel power level which is channel gain-related control information of the downlink data channel, when the determined modulation technique is a high-order modulation technique; and
a transmitter for transmitting over a downlink the determined downlink data channel power level to the UE so that the UE demodulates the packet data using the downlink data channel power level. - View Dependent Claims (33)
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34. A method for transmitting/receiving a downlink data channel power level in a high-speed packet data communication system, comprising the steps of:
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estimating, by a Node B, a channel condition with a UE (User Equipment), and determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to the estimated channel condition, if the determined modulation technique is a high-order modulation technique, determining, by the Node B, a downlink data channel power level which is channel gain-related control information of the downlink data channel, and transmitting over a downlink the determined downlink data channel power level to the UE; and
upon receiving the downlink data channel power level over the downlink, demodulating the packet data according to the downlink data channel power level by the UE. - View Dependent Claims (35)
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36. An apparatus for transmitting/receiving a downlink data channel power level in a high-speed packet data communication system, comprising:
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a Node B for estimating a channel condition with a UE (User Equipment), determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to the estimated channel condition, determining a downlink data channel power level which is channel gain-related control information of the downlink data channel if the determined modulation technique is a high-order modulation technique, and transmitting over a downlink the determined downlink data channel power level to the UE; and
the UE for receiving the downlink data channel power level over the downlink, and demodulating the packet data according to the received downlink data channel power level. - View Dependent Claims (37)
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Specification