Transmitter chain timing and transmit power control
First Claim
1. A method comprising:
- (a) initiating, with a processor of a mobile communication device, a power gain change of a first integrated circuit of a transmit chain of the mobile communication device, across a serial bus, before an inter-symbol time between adjacent transmittal symbols such that the power gain change of the first integrated circuit occurs substantially during the inter-symbol time; and
(b) initiating, with the processor, a power gain change of a second integrated circuit of the transmit chain across the serial bus during the inter-symbol time such that the power gain change of the second integrated circuit occurs substantially during the inter-symbol timewherein the initiating of the power gain change of (a) occurs during a data communication portion of a first symbol, wherein the inter-symbol time separates the data communication portion of the first symbol and a data communication portion of a second symbol, wherein the power gain change of the transmittal symbols is a power gain change from the first symbol to the second symbol, and wherein the initiating of the power gain change of (b) occurs during the inter-symbol time.
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Accused Products
Abstract
In a communications system, transmitter power gain can be changed between symbols. A power gain change of a first part of a transmit chain is initiated a first time, whereas a power gain change of a second part of the transmit chain is initiated at a second time, such that the resulting power gain changes of the first and second parts both occur substantially within an inter-symbol time in a desired relationship to one another. In one example, the power gain change of the first part is initiated before the beginning of the inter-symbol time to account for expected serial bus latency between initiation and execution of the power gain change of the first part. The power gain change of the second part is initiated during the inter-symbol time such that overall power does not exceed an amount (for example, a maximum permitted under a communication standard).
43 Citations
29 Claims
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1. A method comprising:
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(a) initiating, with a processor of a mobile communication device, a power gain change of a first integrated circuit of a transmit chain of the mobile communication device, across a serial bus, before an inter-symbol time between adjacent transmittal symbols such that the power gain change of the first integrated circuit occurs substantially during the inter-symbol time; and (b) initiating, with the processor, a power gain change of a second integrated circuit of the transmit chain across the serial bus during the inter-symbol time such that the power gain change of the second integrated circuit occurs substantially during the inter-symbol time wherein the initiating of the power gain change of (a) occurs during a data communication portion of a first symbol, wherein the inter-symbol time separates the data communication portion of the first symbol and a data communication portion of a second symbol, wherein the power gain change of the transmittal symbols is a power gain change from the first symbol to the second symbol, and wherein the initiating of the power gain change of (b) occurs during the inter-symbol time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 23, 24, 26, 27, 28, 29)
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8. A method comprising:
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(a) sending a first communication, across a serial bus of a mobile communication device, from a first integrated circuit to a second integrated circuit such that a power gain of a first part of a transmit chain of a mobile communication device is changed, the first part of the transmit chain comprising the second integrated circuit, wherein the first communication is sent in (a) before an inter-symbol time between adjacent transmittal symbols such that the power gain change of (a) occurs substantially during the inter-symbol time; and (b) sending a second communication, across the serial bus, from the first integrated circuit to a third integrated circuit such that a power gain of a second part of the transmit chain is changed, the second part of the transmit chain comprising the third integrated circuit wherein the second communication is sent in (b) during the inter-symbol time such that the power gain change of (b) occurs substantially within the inter-symbol time, wherein changing of the power gain change of (a) occurs during a data communication portion of a first symbol, wherein the inter-symbol time separates the data communication portion of the first symbol and a data communication portion of a second symbol, wherein the power gain change of the transmittal symbols is a power gain change from the first symbol to the second symbol, and wherein changing of the power gain change of (b) occurs during the inter-symbol time. - View Dependent Claims (9, 10, 11, 12, 25)
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13. An apparatus, comprising:
a processor configured to (a) initiate a power gain change of a first portion of a transmit chain of a mobile communication device before an inter-symbol time between adjacent transmittal symbols such that the power gain change of the first portion occurs substantially within the inter-symbol time, and configured to (b) initiate a power gain change of a second portion of the transmit chain during the inter-symbol time such that the power gain change of the second portion occurs substantially within the inter-symbol time, wherein initiating of the power gain change of (a) occurs during a data communication portion of a first symbol, wherein the inter-symbol time separates the data communication portion of the first symbol and a data communication portion of a second symbol, wherein the power gain change of the transmittal symbols is a power gain change from the first symbol to the second symbol, and wherein the initiating of the power gain change of (b) occurs during the inter-symbol time. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A computer program product, comprising:
a non-transitory computer-readable medium comprising code for; initiating a first power gain change of a first part of a transmit chain of a mobile communication device before an inter-symbol time between adjacent transmittal symbols such that the first power gain change occurs substantially during the inter-symbol time; and (a) initiating a second power gain change of a second part of the transmit chain during the inter-symbol time such that the second power gain change occurs substantially during the inter-symbol time, wherein the initiating of the power gain change of (a) occurs during a data communication portion of a first symbol, wherein the inter-symbol time separates the data communication portion of the first symbol and a data communication portion of a second symbol, wherein the power gain change of the transmittal symbols is a power gain change from the first symbol to the second symbol, and wherein the initiating of the power gain change of (b) occurs during the inter-symbol time. - View Dependent Claims (20)
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21. An apparatus comprising:
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a first interface for communicating with a first portion of a transmit chain of a mobile communication device; a second interface for communicating with a second portion of the transmit chain; and means for (a) initiating a power gain change of the first portion before an inter-symbol time between adjacent transmittal symbols such that the power gain change of the first portion occurs substantially during the inter-symbol time and for (b) initiating a power gain change of the second portion during the inter-symbol time such that the power gain change of the second portion occurs substantially during the inter-symbol time, wherein the initiating of the power gain change of (a) occurs during a data communication portion of a first symbol, wherein the inter-symbol time separates the data communication portion of the first symbol and a data communication portion of a second symbol, wherein the power gain change of the transmittal symbols is a power gain change from the first symbol to the second symbol, and wherein the initiating of the power gain change of (b) occurs during the inter-symbol time. - View Dependent Claims (22)
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Specification