Adaptive preamble length for continuous connectivity transmission
First Claim
1. A method, comprising:
- providing a data signal on a data channel and a control signal on a control channel from a user equipment to a network element in a communication system adapted for continuously connected users; and
transmitting from said user equipment said control signal comprising a power control preamble, wherein a preamble length of the power control preamble is at most a maximum preamble length in accordance with a maximum preamble length instruction received in the user equipment from said network element, and wherein said preamble length of the power control preamble depends on a transmission gap length in said control signal or in said data signal.
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Accused Products
Abstract
The specification and drawings present a new method, system, apparatus and software product for defining an adaptive preamble length of a preamble for a continuous connectivity transmission using a control channel, e.g., a UL (uplink) dedicated physical control channel (DPCCH), for transmitting the preamble. Such a preamble would reduce the accuracy requirement for the initial power setting after a transmission gap and also help the channel estimation and the synchronization of a data channel, e.g., an enhanced dedicated channel (E-DCH). The preamble length can be optimized and defined using a predetermined criterion depending on: a) a degree of fading of a multipath channel which is used for transmitting data on the data channel and/or b) a throughput relative to a nominal throughput in the data channel.
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Citations
35 Claims
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1. A method, comprising:
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providing a data signal on a data channel and a control signal on a control channel from a user equipment to a network element in a communication system adapted for continuously connected users; and transmitting from said user equipment said control signal comprising a power control preamble, wherein a preamble length of the power control preamble is at most a maximum preamble length in accordance with a maximum preamble length instruction received in the user equipment from said network element, and wherein said preamble length of the power control preamble depends on a transmission gap length in said control signal or in said data signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus, comprising:
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a processor; and memory including computer program code, the memory and the computer program code configured to, with the processor, cause the apparatus at least to; provide a data signal on a data channel and a control signal comprising a power control preamble on a control channel, wherein a preamble length of the power control preamble is at most a maximum preamble length according to a maximum preamble length instruction received in the apparatus from a network and said preamble length of the power control preamble depends on a transmission gap length in said control signal or in said data signal; and transmit said control signal comprising said power control preamble. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A non-transitory computer readable medium, comprising computer program code stored thereon that together with a processor of
a user equipment is configured cause the user equipment to; -
provide a data signal on a data channel and a control signal on a control channel comprising a power control preamble in said communication system adapted for continuously connected users, wherein a preamble length of the power control preamble is at most a maximum preamble length according to a maximum preamble length instruction received in the user equipment from a network element wherein said preamble depends on a transmission gap length in said control signal or in said data signal, and transmit said preamble on said control channel. - View Dependent Claims (28, 29)
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30. An apparatus, comprising:
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signal generation means, for providing a data signal on a data channel and a control signal comprising a power control preamble on a control channel, wherein a preamble length of the bower control preamble is defined adaptively, wherein said preamble length of the power control preamble is at most a maximum preamble length according to a maximum preamble length instruction received in the apparatus from a network element and said preamble length of the power control preamble depends on a transmission gap length in said control signal or in said data signal; and means for transmitting said control signal comprising said power control preamble. - View Dependent Claims (31)
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32. An apparatus, comprising:
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a processor; and memory including computer program code, the memory and the computer program code configured to, with the processor, cause the apparatus at least to; receive a data signal on a data channel and a control signal comprising a power control preamble on a control channel from a user equipment; adaptively define a preamble length of the power control preamble for instructing the user equipment, wherein said preamble length depends on a transmission gap length in said control signal or in said data signal; and transmit a preamble defining signal for said power control preamble to the user equipment. - View Dependent Claims (33)
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34. A method, comprising:
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defining a preamble length of a power control preamble depending on a transmission gap length in a control signal or in a data signal; transmitting a preamble defining signal for instructing said preamble length, and receiving a data signal on a data channel and a control signal comprising said power control preamble on a control channel in a communication system adapted for continuously connected user equipment. - View Dependent Claims (35)
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Specification