Antenna selection method
First Claim
1. A method of initiating a telecommunications uplink from a mobile terminal to a telecommunications network, the mobile terminal having a transmission chain including a baseband stage, a power amplification stage and an antenna, the method including the steps of:
- (a) transmitting a preamble signal from the mobile terminal, the preamble signal being transmitted in accordance with a transmission parameter of the mobile terminal;
(b) determining whether a base station has successfully received the preamble signal and if so, establishing an uplink to the base station on the basis of the first transmission parameter;
(c) in the event it is not determined that a base station has successfully received the preamble signal, changing the transmission parameter, and repeating steps (a) and (b);
wherein the transmission parameter controls one or more of the baseband stage, power amplification stages and the antenna such that changing the transmission parameter in step (c) results in an alteration of the signal diversity of one or more preambles as received by the base station.
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Accused Products
Abstract
A method and apparatus for initiating a telecommunications uplink from a mobile terminal to a telecommunications network. A preamble signal is transmitted from the mobile terminal to the network in accordance with a transmission parameter of the mobile terminal. The parameter is changed and the preamble retransmitted until successful receipt in the network is confirmed. Changing the transmission parameter alters the signal diversity of one or more preambles as received by the base station.
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Citations
16 Claims
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1. A method of initiating a telecommunications uplink from a mobile terminal to a telecommunications network, the mobile terminal having a transmission chain including a baseband stage, a power amplification stage and an antenna, the method including the steps of:
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(a) transmitting a preamble signal from the mobile terminal, the preamble signal being transmitted in accordance with a transmission parameter of the mobile terminal;
(b) determining whether a base station has successfully received the preamble signal and if so, establishing an uplink to the base station on the basis of the first transmission parameter;
(c) in the event it is not determined that a base station has successfully received the preamble signal, changing the transmission parameter, and repeating steps (a) and (b);
wherein the transmission parameter controls one or more of the baseband stage, power amplification stages and the antenna such that changing the transmission parameter in step (c) results in an alteration of the signal diversity of one or more preambles as received by the base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile telecommunications terminal configured to initiate a telecommunications uplink to a telecommunications network, the mobile terminal having a transmission chain including a baseband stage, a power amplification stage and an antenna and being configured to:
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(a) transmit a preamble signal in accordance with a transmission parameter of the mobile terminal;
(b) determine whether a base station has successfully received the preamble signal and if so, to establish an uplink to the base station on the basis of the first transmission parameter;
(c) in the event it is not determined that a base station has successfully received the preamble signal, change the transmission parameter, and repeat (a) and (b);
wherein the transmission parameter controls one or more of the baseband stage, power amplification stages and the antenna such that changing of the transmission parameter in (c) results in an alteration of the signal diversity of one or more subsequent preambles as received by the base station. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification