Transmission of ACK/NACK Bits and their Embedding in the Reference Signal

Abstract

Transmitting a acknowledge/not acknowledge (ACK/NACK) response in a wireless cellular network by mapping the data value into a cyclic shifted version of a reference signal. A subframe is formed with a plurality of symbols with certain symbols designated as reference signal (RS) symbols. The receiver and transmitter both know when an ACK/NACK response is expected. If an ACK/NACK response is not expected then an RS is inserted in the duration of symbols designated as RS symbols. If an ACK/NACK response is expected then the ACK/NACK response is embedded in one or more of the symbols designated as RS symbols. The subframe is transmitted to a receiver and the receiver can determine the ACK/NACK value in the RS symbol if present and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data.

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Technology	Declaration Information			Specification Information	Explicitly Disclosed	Patent Type
Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Number	Explicitly Disclosed	Patent Type
Not Available	09/11/2011	ISLD-201111-002	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: Illustrative part: ---- Release: + -	Yes	Basis Patent
4G	15/10/2015	ISLD-201509-009	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: Illustrative part: ---- Release: + -	Yes	Basis Patent

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SEP Database Augmented SEP Database

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Publication No	Technology	Declaration Information			Specification Information	Explicitly Disclosed	Patent Type
Publication No	Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Number	Explicitly Disclosed	Patent Type
US2008075184A1	Not Available	09/11/2011	ISLD-201111-002	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	Yes	Basis Patent
US2008075184A1	4G	15/10/2015	ISLD-201509-009	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	Yes	Basis Patent
WO2008036977A2	Not Available	09/11/2011	ISLD-201111-002	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
WO2008036977A2	4G	15/10/2015	ISLD-201509-009	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	Yes	Family Member
WO2008036977A3	Not Available	09/11/2011	ISLD-201111-002	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
WO2008036977A3	4G	15/10/2015	ISLD-201509-009	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	Yes	Family Member
US2014029589A1	Not Available	09/11/2011	ISLD-201111-002	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
US2014029589A1	4G	15/10/2015	ISLD-201509-009	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	Yes	Family Member
US9313062B2	Not Available	09/11/2011	ISLD-201111-002	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
US9313062B2	4G	15/10/2015	ISLD-201509-009	TEXAS INSTRUMENTS INC	S1 TS Number: TS 136 211 Version No: ---- Section No: ---- Release : ---- + -	Yes	Family Member

Publication No	Technology	Declaration Information			Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
Publication No	Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
-----	-----	-----	-----	-----	S1 TS Number: ----- Version No: ----- Section No:----- Release:----- + -				-----	-----	-----	-----

Technologies

Feedback

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Use Cases

Wireless communication

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Claim

1. A method for transmitting in a wireless cellular network, comprising:
determining a data value for an ACK/NACK status information;
mapping the data value for the ACK/NACK status information to a cyclic shift amount of a reference signal, wherein the ACK/NACK status information is embedded in the reference signal;
constructing a pre-defined base signal using orthogonal frequency-division multiplexing (OFDM) modulation, where OFDM modulation comprises mapping a constant amplitude sequence onto a set of tones;
cyclically shifting the base signal in the time-domain by the mapped cyclic shift amount representative of the data value to form a cyclic shifted base signal; and
transmitting the cyclic shifted base signal to a receiver, whereby the receiver can determine the data value by determining the shift amount, wherein the cyclic shifts are different cyclic shift of constant amplitude zero cyclic auto-correction (CAZAC) sequence with zero auto-correlation properties providing orthogonal transmissions.', 'determining a data value for an ACK/NACK status information;', 'mapping the data value for the ACK/NACK status information to a cyclic shift amount of a reference signal, wherein the ACK/NACK status information is embedded in the reference signal;', 'constructing a pre-defined base signal using orthogonal frequency-division multiplexing (OFDM) modulation, where OFDM modulation comprises mapping a constant amplitude sequence onto a set of tones;', 'cyclically shifting the base signal in the time-domain by the mapped cyclic shift amount representative of the data value to form a cyclic shifted base signal; and', 'transmitting the cyclic shifted base signal to a receiver, whereby the receiver can determine the data value by determining the shift amount, wherein the cyclic shifts are different cyclic shift of constant amplitude zero cyclic auto-correction (CAZAC) sequence with zero auto-correlation properties providing orthogonal transmissions.

2. The method of claim 1, further comprising transmitting a channel quality indicator (CQI) in conjunction with a cyclic shifted constant amplitude zero cyclic auto-correlation (CAZAC) like sequence, whereby the receiver may use the cyclic shifted CAZAC-like sequence as a reference signal for coherent demodulation of the CQI.

3. The method of claim 1, further comprising modifying a constant amplitude zero cyclic auto-correction (CAZAC) like sequence before cyclic shifting.

4. The method of claim 1, wherein the data value is an acknowledge (ACK/NACK) status bit.

5. The method of claim 1, wherein the same data value is re-transmitted a second or more times for redundancy.

6. The method of claim 5, wherein the data value is mapped to a different cyclic shift amount that is used for the second re-transmission.

7. The method of claim 2, further comprising:
receiving a signal at the receiver that includes the transmitted cyclic shifted constant amplitude zero cyclic auto-correlation (CAZAC) like sequence;
determining the shift amount of the transmitted cyclic shifted CAZAC-like sequence; and
extracting the data value in accordance with the shift amount.', 'receiving a signal at the receiver that includes the transmitted cyclic shifted constant amplitude zero cyclic auto-correlation (CAZAC) like sequence;', 'determining the shift amount of the transmitted cyclic shifted CAZAC-like sequence; and', 'extracting the data value in accordance with the shift amount.

8. The method of claim 7, wherein determining the shift amount comprises:
demodulating the received signal with the based CAZAC-like sequence to obtain the estimated channel taps; and
estimating the shift amount based on a location of a maximum channel tap.', 'demodulating the received signal with the based CAZAC-like sequence to obtain the estimated channel taps; and', 'estimating the shift amount based on a location of a maximum channel tap.

9. The method of claim 7, wherein determining the shift amount comprises:
demodulating the received signal with the base CAZAC-like sequence to obtain the estimated channel taps; and
estimating the shift amount based on a maximum section energy wherein a length of the CAZAC-like sequence is divided into N sections.', 'demodulating the received signal with the base CAZAC-like sequence to obtain the estimated channel taps; and', 'estimating the shift amount based on a maximum section energy wherein a length of the CAZAC-like sequence is divided into N sections

10. The method of claim 7, further comprising using the cyclic shifted CAZAC-like sequence as a reference signal for coherent demodulation of the CQI

11. A method for transmitting in a wireless cellular network, comprising:
determining a data value for an ACK/NACK status information;
mapping the data value for the ACK/NACK status information to a cyclic shift amount of a reference signal, wherein the ACK/NACK status information is embedded in the reference signal;
forming a subframe with a plurality of symbols with certain symbols designated as reference signals (RS) symbols;
determining when an acknowledge (ACK/NACK) response is expected;
when 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, embedding the ACK/NACK response in one or more of the symbols designated as RS symbols; 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, wherein a cyclic shift is different cyclic shift of constant amplitude zero cyclic auto-correction (CAZAC) sequence with zero auto-correlation properties providing orthogonal transmissions.', 'determining a data value for an ACK/NACK status information;', 'mapping the data value for the ACK/NACK status information to a cyclic shift amount of a reference signal, wherein the ACK/NACK status information is embedded in the reference signal;', 'forming a subframe with a plurality of symbols with certain symbols designated as reference signals (RS) symbols;', 'determining when an acknowledge (ACK/NACK) response is expected;', 'when 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, embedding the ACK/NACK response in one or more of the symbols designated as RS symbols; 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, wherein a cyclic shift is different cyclic shift of constant amplitude zero cyclic auto-correction (CAZAC) sequence with zero auto-correlation properties providing orthogonal transmissions

12. The method of claim 11 wherein the RS comprises a base constant amplitude zero cyclic auto-correction (CAZAC) like sequence and embedding the acknowledge (ACK/NACK) response comprises:
determining a data value for the ACK/NACK response;
mapping the data value to a cyclic shift amount; and
cyclic shifting the base CAZAC-like sequence by the mapped cyclic shift amount representative of the data value to form a cyclic shifted CAZAC-like sequence.', 'determining a data value for the ACK/NACK response;', 'mapping the data value to a cyclic shift amount; and', 'cyclic shifting the base CAZAC-like sequence by the mapped cyclic shift amount representative of the data value to form a cyclic shifted CAZAC-like sequence

13. 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 acknowledge (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 determining and mapping a data value for the ACK/NACK status information to a cyclic shift amount of a reference signal, wherein the ACK/NACK status information is embedded in the reference signal;
means for embedding the ACK/NACK response in one or more of the symbols designated as RS symbols 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, when present, and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data, wherein cyclic shift are different cyclic shift of constant amplitude zero cyclic auto-correction (CAZAC) sequence with zero auto-correlation properties providing orthogonal transmissions.', 'means for forming a subframe with a plurality of symbols with certain symbols designated as reference signal (RS) symbols;', 'means for determining when an acknowledge (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 determining and mapping a data value for the ACK/NACK status information to a cyclic shift amount of a reference signal, wherein the ACK/NACK status information is embedded in the reference signal;', 'means for embedding the ACK/NACK response in one or more of the symbols designated as RS symbols 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, when present, and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data, wherein cyclic shift are different cyclic shift of constant amplitude zero cyclic auto-correction (CAZAC) sequence with zero auto-correlation properties providing orthogonal transmissions.14. The UE of claim 13 wherein the RS comprises a base CAZAC-like sequence and wherein the means for embedding the ACK/NACK response comprises:
means for determining a data value for the ACK/NACK response;
means for mapping the data value to a cyclic shift amount; and
means for cyclic shifting the base CAZAC-like sequence by the mapped cyclic shift amount representative of the data value to form a cyclic shifted CAZAC-like sequence.', 'means for determining a data value for the ACK/NACK response;', 'means for mapping the data value to a cyclic shift amount; and', 'means for cyclic shifting the base CAZAC-like sequence by the mapped cyclic shift amount representative of the data value to form a cyclic shifted CAZAC-like sequence.']

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