Reverse link mobile transmit diversity
AssigneeVIA Telecom Co., Ltd.
InventorsShu Wang, Hong-Kui Yang
Life of this patent
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Abstract
An access network is wirelessly coupled to an access terminal. The access network comprises a plurality of communication modules, a transmitter and a channel estimator. The plurality of communication modules coupled to the access terminal and configured to transmit a plurality of signals. The transmitter coupled to the access terminal and configured to send an index which indicates number of the plurality of signals. The channel estimator, configured to adjust and modulate a channel state information into the plurality of signals.
Claims28
A system, comprising:
- an access terminal, comprising:
- a first plurality of communication modules, wirelessly coupled to a second plurality of communication modules of an access network, that receives a first plurality of signals corresponding to the plurality of the communication modules;
- a receiver, coupled to the first plurality of communication modules, that receives an index from the access network which indicates a number of the first plurality of signals;
- and
- a processor, that adjusts a transmitting gain of the first plurality of communication modules;
- and
- the access network, comprising:
- a channel estimator, that generates the second plurality of signals according to the first plurality of signals;
- and
- a channel variation estimator, that receives a gain signal corresponding to the first plurality of signals and that generates a channel variation vector according to the gain signal and the channel circumstances,
- wherein the access network adjusts a power control signal to the access terminal according to the channel variation vector.
An apparatus wirelessly coupled to an access terminal, the apparatus comprising:
- a plurality of communication modules, coupled to the access terminal, that transmits a first plurality of signals;
- a transmitter, coupled to the access terminal, that sends an index which indicates a number of the plurality of signals;
- a channel estimator, that generates a second plurality of signals according to the first plurality of signals transmitted by the access terminal;
- and
- a channel variation estimator, that receives a gain signal corresponding to the first plurality of signals and that generates a channel variation vector according to the gain signal and the channel circumstances,
- wherein the access network adjusts a power control signal to the access terminal according to the channel variation vector.
A method for a system which comprising an access terminal wirelessly coupled to an access network, the method comprising:
- within the access terminal:
- receiving a plurality of signals corresponding to a plurality of communication modules;
- receiving an index from the access network which indicates a number of the plurality of signals;
- and
- adjusting the gain of the access terminal;
- and
- within the access network:
- receiving a gain signal corresponding to the plurality of signals and generating a channel variation vector according to the gain signal and channel circumstances;
- wherein the access network adjusts a power control signal to the access terminal according to the channel variation vector.
A method for an access network which is wirelessly coupled to an access terminal, the method comprising:
- transmitting a plurality of signals corresponding to a plurality of communication modules;
- sending an index which indicates a number of the plurality of signals;
- and adjusting and modulating a channel state information into the plurality of signals;
- receiving a gain signal corresponding to the plurality of signals and generating a channel variation vector according to the gain signal and channel circumstances;
- wherein the access network adjusts a power control signal to the access terminal according to the channel variation vector.
Dependencies are inferred from the claim text.