Transmission of acknowledge/not acknowledge (ACK/NACK) bits and their embedding in the reference signal

A method for transmitting in a wireless cellular network, comprising:

• forming a subframe with a plurality of symbols with certain symbols designated as reference signal (RS) symbols;
• determining when an ACK/NACK response expected;
• when acknowledged/not acknowledged (ACK/NACK) response is not expected, inserting a pre-defined reference signal in the duration of symbols designated as RS symbols;
• when an ACK/NACK response is expected, autonomously embedding the ACK/NACK response in one or more of the symbols designated as RS symbols of a CQI transmission in support of both ACK/NACK decoding and channel estimation for CQI decoding;
• and
• transmitting the subframe to a receiver, whereby the receiver can determine the ACK/NACK in the RS symbol, when present, and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data.

A method for receiving in a wireless cellular network, comprising:

• receiving a signal at the receiver that includes a transmitted cyclic shifted base signal in place of a reference signal;
• determining the shift amount of the transmitted cyclic shifted base signal;
• extracting a data value for an ACK/NACK status information in accordance with the shift amount when a data value is expected;
• and
• using the cyclic shifted base signal as a reference signal for coherent demodulation of a data symbol.

A user equipment (UE) device for use in a wireless cellular network, comprising:

• means for forming a subframe with a plurality of symbols with certain symbols designated as reference signal (RS) symbols;
• means for determining when an acknowledged/not acknowledged (ACK/NACK) response is expected;
• means for inserting an RS in the duration of symbols designated as RS symbols when ACK/NACK response is not expected;
• means for autonomously embedding the ACK/NACK response in one or more of the symbols designated as RS symbols of a CQI transmission in support of both ACK/NACK decoding and channel estimation for CQI decoding, when an ACK/NACK response is expected;
• and
• means for transmitting the subframe to a receiver, whereby the receiver can determine the ACK/NACK in the RS symbol, if present, and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data.

A receiver for use in a wireless cellular network, comprising:

• a radio receiver operable to receive a signal that includes a transmitted data-bearing cyclic shifted base signal;
• circuitry operable to determine the shift amount of the transmitted data-bearing cyclic shifted base signal;
• circuitry operable to extract a data value for an ACK/NACK status information accordance with the shift amount when a data value is expected;
• and
• circuitry operable to use the data-bearing cyclic shifted base signal as a reference signal for coherent demodulation of a data symbol.

A user equipment (UE) device for use in a wireless cellular network, comprising:

• circuitry for forming a subframe with a plurality of symbols with certain symbols designated as reference signal (RS) symbols;
• circuitry for determining when an acknowledged/not acknowledged (ACK/NACK) response is expected;
• circuitry for inserting an RS in the duration of symbols designated as RS symbols when ACK/NACK response is not expected;
• circuitry for autonomously embedding the ACK/NACK response in one or more of the symbols designated as RS symbols of a CQI transmission in support of both ACK/NACK decoding and channel estimation for CQI decoding, when an ACK/NACK response is expected;
• and
• circuitry for transmitting the subframe to a receiver, whereby the receiver can determine the ACK/NACK in the RS symbol, if present, and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data.