Abstract
Methods and apparatus to allocate reference signals in wireless communication systems are disclosed. A disclosed example apparatus comprises a reference signal generator (501) to generate a reference sequence (505) based on a parameter assigned to a wireless region wherein the parameter specifies a first reference sequence to be transmitted by a first device of the wireless region during a first time interval the first reference sequence being different from a second reference sequence assigned to a second device of a second wireless region adjacent to the first wireless region. The reference sequence generator comprises a cyclic shift selector (503) to select a cyclic shift for the first time interval based on the parameter and a cyclic shifter (506) to cyclically shift the first reference signal based on the selected cyclic shift. The example apparatus further comprises a transmit adapter (510) to transmit the cyclically shifted first reference sequence.
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
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| US2007253465A1 | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
| US2007253465A1 | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
| US9444650B2 | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
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| US9444650B2 | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
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| EP2016683A4 | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| EP2016683A4 | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| KR101035456B1 | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| KR101035456B1 | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| KR101035456B1 | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| KR20080110937A | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| KR20080110937A | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| KR20080110937A | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| WO2007127902A2 | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
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| JP2009535936A | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| JP5017736B2 | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| JP5017736B2 | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| JP5017736B2 | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| CN101479951A | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
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| CN103312486B | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
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