Apparatus and methods for wireless communication transmission power control that supports physical channel reconfiguration
First Claim
1. A method of transmission power control for a wireless transmit receive unit (WTRU) that transmits communication signals in a forward composite channel carrying data in a selected combination of channels with respect to a selected physical transmission configuration of the forward composite channel, the method comprising:
- transmitting communication signals in the forward composite channel in a selected combination of channels with respect to a first physical transmission configuration of the forward composite channel;
determining a reference combination of channels with respect to the first physical transmission configuration of the forward composite channel;
applying a gain factor β
to the transmission of communication signals in the selected combination of channels with respect to the first physical transmission configuration of the forward composite channel where the gain factor β
is determined based on spreading factors of the selected combination of channels and the reference combination of channels with respect to the first physical transmission configuration of the forward composite channel;
reconfiguring the transmission of communication signals in the forward composite channel to transmit the signals in a selected combination of channels with respect to a second physical transmission configuration of the forward composite channel;
determining a reference combination of channels with respect to the second physical transmission configuration of the forward composite channel; and
applying a gain factor β
′
to the transmission of communication signals in the selected combination of channels with respect to the second physical transmission configuration of the forward composite channel where the gain factor β
′
is determined based on spreading factors of the selected combination of channels and the reference combination of channels with respect to the second physical transmission configuration of the forward composite channel.
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Abstract
Apparatus and methods for wireless communication transmission power control are provided. Determination of gain factors and adjustments for physical channel reconfiguration in the context of transmission power control are addressed. Preferably, implementation is in conjunction with communication systems in which wireless communications are conducted between wireless transmit receive units (WTRUs) using multiple channels that are concurrently transmitted.
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Citations
36 Claims
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1. A method of transmission power control for a wireless transmit receive unit (WTRU) that transmits communication signals in a forward composite channel carrying data in a selected combination of channels with respect to a selected physical transmission configuration of the forward composite channel, the method comprising:
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transmitting communication signals in the forward composite channel in a selected combination of channels with respect to a first physical transmission configuration of the forward composite channel; determining a reference combination of channels with respect to the first physical transmission configuration of the forward composite channel; applying a gain factor β
to the transmission of communication signals in the selected combination of channels with respect to the first physical transmission configuration of the forward composite channel where the gain factor β
is determined based on spreading factors of the selected combination of channels and the reference combination of channels with respect to the first physical transmission configuration of the forward composite channel;reconfiguring the transmission of communication signals in the forward composite channel to transmit the signals in a selected combination of channels with respect to a second physical transmission configuration of the forward composite channel; determining a reference combination of channels with respect to the second physical transmission configuration of the forward composite channel; and applying a gain factor β
′
to the transmission of communication signals in the selected combination of channels with respect to the second physical transmission configuration of the forward composite channel where the gain factor β
′
is determined based on spreading factors of the selected combination of channels and the reference combination of channels with respect to the second physical transmission configuration of the forward composite channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wireless transmit receive unit (WTRU) comprising:
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a transmitter configured to transmit communication signals in a forward composite channel carrying data in a selected combination of channels with respect to a selected physical transmission configuration of the forward composite channel; a processor configured to make forward channel power adjustments as a function of target metrics computed based on the data signals as received over the forward channel in conjunction with applying a gain factor based on a reference combination of channels with respect to the selected physical transmission configuration of the forward composite channel; said transmitter configured to reconfigure the transmission of communication signals in the forward composite channel from transmission in a first selected combination of channels with respect to a first physical transmission configuration of the forward composite channel to transmission in a second selected combination of channels with respect to a second physical transmission configuration of the forward composite channel; said processor configured to compute and apply a gain factor β
to the transmission of communication signals in the first selected combination of channels with respect to the first physical transmission configuration of the forward composite channel such that the gain factor β
is determined based on spreading factors of the first selected combination and a reference combination of channels with respect to the first physical transmission configuration of the forward composite channel; andsaid processor configured to compute and apply a gain factor β
′
to the transmission of communication signals in the second selected combination of channels with respect to the second physical transmission configuration of the forward composite channel where the gain factor β
′
is determined based on spreading factors of the second selected combination and a reference combination of channels with respect to the second physical transmission configuration of the forward composite channel. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A method of transmission power control for a wireless transmit receive unit (WTRU) that transmits communication signals in a forward composite channel carrying data in a selected combination of channels with respect to a selected physical transmission configuration of the forward composite channel where the WTRU is configured to make forward channel power adjustments as a function of target metrics computed based on the data signals as received over the forward channel in conjunction with applying a gain factor based on a reference combination of channels with respect to the selected physical transmission configuration of the forward composite channel, the method comprising:
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determining a reference combination of channels with respect to the forward composite channel; transmitting communication signals in the forward composite channel in a selected combination of channels with respect to a first physical transmission configuration of the forward composite channel; using the reference combination of channels of the forward composite channel for determining a gain factor β
to apply to the transmission of communication signals in the selected combination of channels with respect to the first physical transmission configuration of the forward composite channel;making forward channel power adjustments as a function of target metrics computed based on the data signals as received over the forward channel with respect to the first physical transmission configuration of the forward composite channel; reconfiguring the transmission of communication signals in the forward composite channel to transmit the signals in a selected combination of channels with respect to a second physical transmission configuration of the forward composite channel in conjunction with adjusting the forward channel transmission power based on an updated target metric computed as a function of spreading factor changes in the reference channel combination from the first physical configuration to the second physical configuration of the forward composite channel; and using the reference combination of channels with respect to the second physical transmission configuration of the forward composite channel for determining a gain factor β
′
to apply to the transmission of communication signals in the selected combination of channels with respect to the second physical transmission configuration of the forward composite channel. - View Dependent Claims (24, 25, 26, 27)
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28. A wireless transmit receive unit (WTRU) comprising:
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a transmitter configured to transmit communication signals in a forward composite channel carrying data in a selected combination of channels with respect to a selected physical transmission configuration of the forward composite channel; a processor configured to make forward channel power adjustments as a function of target metrics computed based on the communication signals as received over the forward channel in conjunction with applying a gain factor based on a reference combination of channels with respect to the selected physical transmission configuration of the forward composite channel; and said transmitter configured to reconfigure the transmission of communication signals in the forward composite channel from transmission in a first selected combination of channels with respect to a first physical transmission configuration of the forward composite channel to transmission in a second selected combination of channels with respect to a second physical transmission configuration of the forward composite channel in conjunction with the processor adjusting the forward channel transmission power based on an updated target metric computed as a function of spreading factor changes in the reference channel combination from the first physical configuration to the second physical configuration of the forward composite channel. - View Dependent Claims (29, 30, 31, 32)
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33. A wireless transmit receive unit (WTRU) configured for use in a code division multiple access (CDMA) system in which data is communicated via transport channels (TrCHs) of a coded composite transport channel (CCTrCH) in a selected transport format combination (TFC) associated with a set of predefined format channel combinations where a gain factor β
- is applied for transmitter power control for a combination of channels that is selected for data transmission, the WTRU comprising;
a processor configured to compute a gain factor β
j for a j-th TFC which is not the same as a reference TFC such thatwhere; β
ref is a gain factor for the reference TFC;where RMi is a semi-static rate matching attribute for transport channel i, Ni is the number of bits output from a radio frame segmentation block for transport channel i and the sum is taken over all transport channels i in the reference TFC; where the sum is taken over all transport channels i in the j-th TFC; where SFi is a spreading factor of a type of physical channel i and the sum is taken over all such physical channels i used in the reference TFC; and where the sum is taken over all such physical channels i used in the j-th TFC. - View Dependent Claims (34)
- is applied for transmitter power control for a combination of channels that is selected for data transmission, the WTRU comprising;
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35. A method for a wireless transmit receive unit (WTRU) configured for use in a code division multiple access (CDMA) system in which data is communicated via transport channels (TrCHs) of a coded composite transport channel (CCTrCH) in a selected transport format combination (TFC) associated with a set of predefined format channel combinations where a gain factor β
- is applied for transmitter power control for a combination of channels that is selected for data transmission, the method comprising;
computing a gain factor β
j for a j-th TFC which is not the same as a reference TFC such thatwhere; β
ref is a gain factor for the reference TFC;where RMi is a semi-static rate matching attribute for transport channel i, Ni is the number of bits output from a radio frame segmentation block for transport channel i and the sum is taken over all transport channels i in the reference TFC; where the sum is taken over all transport channels i in the j-th TFC; where SFi is a spreading factor of a type of physical channel i and the sum is taken over all such physical channels i used in the reference TFC; and where the sum is taken over all such physical channels i used in the j-th TFC. - View Dependent Claims (36)
- is applied for transmitter power control for a combination of channels that is selected for data transmission, the method comprising;
Specification