Both a wireless terminal apparatus and wireless base station apparatus are provided that can, in an operation of encoding the control signals of the upstream link transmitted from the multiple terminal stations while encoding with regard to each of the terminal stations, increase a number of the terminal stations to which different codes are respectively assigned. A wireless terminal apparatus includes: an encoding information receiving portion receiving encoding information which is used at the wireless terminal apparatus from the base station; a phase-shifting unit which conducts a phase-shifting operation on a predetermined first code based on the encoding information; a code selection unit which, based on the received encoding information, selects a second code from multiple codes orthogonally crossing each other; and a control signal encoding portion which conducts an encoding operation on the control signal that is going to be transmitted to the base station by using both the first code on which the phase-shifting operation has been conducted and the second code.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of wireless terminal apparatus which encodes and transmits a control signal to a wireless base station apparatus, comprising: by a receiver, receiving encoding information which is used at the wireless terminal apparatus and which is transmitted from the wireless base station apparatus; by an encoder, inputting the encoding information comprising a first code, a second code, and a phase shift amount from the receiver, and conducting an encoding and multiplexing operation on the control signal using a first multiplier and a second multiplier, wherein the first multiplier conducts a multiplication operating using the first code on which a phase-shift operation is conducted by a phase shift portion using the phase-shift amount, and where the second multiplier conducts a multiplication operating using the second code; and by a transmitter, transmitting the encoded control signal, wherein the second code is an orthogonal code of a three dimension which is generated from complex numbers and which has a code length of 3.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
January 28, 2014
February 23, 2016
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