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.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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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 | ||||
Specification Information
Specification Information
Technologies
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| US2007253465A1 | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
| 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 | ||||
| US9444650B2 | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
| US9444650B2 | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
| EP2016683A2 | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| EP2016683A2 | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| EP2016683A2 | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| EP2016683A4 | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| 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 | ||||
| WO2007127902A3 | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| WO2007127902A3 | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| WO2007127902A3 | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| JP2009535936A | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| JP2009535936A | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| 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 | ||||
| CN101479951A | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| CN101479951A | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| CN101479951B | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| CN101479951B | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| CN101479951B | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| CN103312486A | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| CN103312486A | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| CN103312486A | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| CN103312486B | 4G | 03/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| CN103312486B | 4G | 21/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
| CN103312486B | 4G | 15/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Resource configuration
Product
Use Cases
Wireless communication
Services
Claim
1. Apparatus comprising: a reference signal generator to generate a reference sequence 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 comprising: a cyclic shift selector to select a cyclic shift for the first time interval based on the parameter; and a cyclic shifter to cyclically shift the first reference signal based on the selected cyclic shift; and a transmit adapter to transmit the cyclically shifted first reference sequence.
2. Apparatus as in Claim 0, wherein the cyclic shift selector is to select a second cyclic shift for a second time interval based on the parameter; and wherein the cyclic shifter is to cyclically shift the reference sequence based on the second selected cyclic shift during the second time interval.
3. Apparatus as in Claim 0 or 2, wherein the parameter comprises at least one of a frame number, a sub-frame offset, a slot offset, a transmitted symbol offset, a wireless region identifier, a NodeB identifier, a user endpoint identifier or a group identifier.
4. Apparatus as in Claim 0 or 2, wherein the cyclic shift selector is to obtain the parameter from a chain of Shifts List.
5. Apparatus as in Claim 0 or 2, wherein the reference signal generator is to generate a random reference sequence.
6. Apparatus as in Claim Oor 2, the reference signal generator further comprises a sequence selector to select the reference sequence from a set of reference sequences assigned to the first wireless region based on the parameter.
7. Apparatus as in Claim 0, wherein the sequence selector is to obtain the parameter from a chain of Reference List.
8. Apparatus as in Claim 0 or 2, further comprising a modulator to modulate the selected reference sequence, the modulator comprising: a Fourier transform module to perform a Fourier transform of the generated reference sequence; an inverse Fourier transform module to perform an Inverse Fourier transform; and an interface to map outputs of the Fourier transform to selected inputs of the Inverse Fourier transform.
9. A method comprising: generating a reference signal sequence 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 generation comprising: selecting a cyclic shift for the first time interval based on the parameter; cyclically shifting the first reference signal based on the selected cyclic shift; and transmitting the cyclically shifted first reference sequence
10. A method as in Claim 9, further comprising selecting a second cyclic shift for a second time interval based on the parameter; and wherein the cyclically shifting includes cyclically shifting the reference sequence based on the second selected cyclic shift during the second time interval
11. A method as in Claim 9 or 10, further comprising modulating the selected reference sequence, the modulation comprising: performing a Fourier transform of the generated reference sequence; performing an Inverse Fourier transform; and mapping outputs of the performing the Fourier transform to selected inputs for performing the Inverse Fourier transform.']
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SUMMARY
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.