Abstract
To perform wireless communications in a closed loop multiple input multiple output (MIMO) system a feedback data structure is communicated over a wireless channel between a first wireless node and a second wireless node where the feedback data structure contains indicators identifying coding to be applied by the second wireless node on signaling communicated between the second wireless node and the first wireless node where the information in the feedback data structure is based on wireless channel conditions detected at the first wireless node. The indicators identify different codings to be used for different corresponding bands in the wireless channel.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
---|---|---|---|---|---|---|---|---|---|
Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member |
Specification Information
Specification Information
Technologies
Family Information
All Granted Patents In Patent Family : | ---- |
Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
---|---|---|---|---|---|---|---|---|---|---|
Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||
US2011013563A1 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Basis Patent | ||||
US2011013563A1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | Yes | Basis Patent | ||||
US2011013563A1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
US2011013563A1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
US8531958B2 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Basis Patent | ||||
US8531958B2 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | Yes | Basis Patent | ||||
US8531958B2 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
US8531958B2 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
CN101960729A | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Family Member | ||||
CN101960729A | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
CN101960729A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
CN101960729A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
CN101960729B | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Family Member | ||||
CN101960729B | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
CN101960729B | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
CN101960729B | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
EP2255458A1 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Family Member | ||||
EP2255458A1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
EP2255458A1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
EP2255458A1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
EP2255458A4 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Family Member | ||||
EP2255458A4 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
EP2255458A4 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
EP2255458A4 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
JP2011517385A | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Family Member | ||||
JP2011517385A | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
JP2011517385A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
JP2011517385A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
JP5433589B2 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Family Member | ||||
JP5433589B2 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
JP5433589B2 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
JP5433589B2 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
KR101543054B1 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Family Member | ||||
KR101543054B1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
KR101543054B1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
KR101543054B1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
KR20100113176A | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Family Member | ||||
KR20100113176A | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
KR20100113176A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
KR20100113176A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
WO2009108897A1 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | Yes | Family Member | ||||
WO2009108897A1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
WO2009108897A1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
WO2009108897A1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
US2013336416A1 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
US2013336416A1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
US2013336416A1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
US2013336416A1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
US2013343339A1 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
US2013343339A1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
US2013343339A1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
US2013343339A1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
US9088317B2 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
US9088317B2 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
US9088317B2 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
US9088317B2 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
US2015280794A1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
Yes | Basis Patent | |||
US2015280794A1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
Yes | Basis Patent | |||
US9374142B2 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
Yes | Basis Patent | |||
US9374142B2 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
Yes | Basis Patent | |||
CN103973348A | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
CN103973348A | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
CN103973348A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
CN103973348A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
CN103973348B | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
CN103973348B | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
CN103973348B | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
CN103973348B | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
CN104135312A | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
CN104135312A | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
CN104135312A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
CN104135312A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
CN104135312B | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
CN104135312B | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
CN104135312B | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
CN104135312B | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
CN104135313A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
CN104135313A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
JP2014096807A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
JP2014096807A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
JP5913271B2 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
JP5913271B2 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
JP2014064320A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
JP2014064320A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
JP5824503B2 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
JP5824503B2 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
KR101543194B1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
KR101543194B1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
KR20140068213A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
KR20140068213A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
KR101611945B1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
KR101611945B1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
KR20150034292A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
S4
|
No | Family Member | |||
KR20150034292A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
KR101646759B1 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
KR101646759B1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
KR101646759B1 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
|
No | Family Member | |||
KR101646759B1 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
KR20160044050A | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
KR20160044050A | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
KR20160044050A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
|
No | Family Member | |||
KR20160044050A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
JP2016119706A | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
JP2016119706A | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
JP2016119706A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
|
No | Family Member | |||
JP2016119706A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
KR20160097381A | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
KR20160097381A | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
KR20160097381A | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
|
No | Family Member | |||
KR20160097381A | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
BRPI0907996A2 | 4G | 12/04/2012 | ISLD-201204-011 | APPLE INC | No | Family Member | ||||
BRPI0907996A2 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
BRPI0907996A2 | 4G | 05/11/2015 | ISLD-201511-011 | APPLE INC |
S1
S2
S3
|
No | Family Member | |||
BRPI0907996A2 | 4G | 28/11/2016 | ISLD-201703-106 | APPLE INC |
S1
S2
S3
S4
S5
|
No | Family Member | |||
CN104135313B | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
EP3503425B1 | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||||
----- | ----- | ----- | ----- | ----- |
S1
|
----- | ----- | ----- | ----- |
Technologies
Product
Use Cases
Services
Claim
1. A method for operating a first wireless node as part of a closed loop multiple-input multiple-output (MIMO) communication system including the first wireless node and a second wireless node, the method comprising:
estimating a channel matrix H of a wireless channel from the second wireless node to the first wireless node;
computing first indicators based on the channel matrix H, wherein the first indicators identify recommended coding for signaling to be transmitted from the second wireless node to the first wireless node, wherein the first indicators include: a precoding matrix indicator (PMI) selected from a set of two or more available PMI values, and a rank mode indicator selected from a set of two or more available rank values, wherein said estimating and said computing are performed by digital circuitry, wherein said computing the first indicators includes:
computing an objective value for each precoding matrix in a predefined codebook, wherein rows of the codebook correspond to the two or more available PMI values, wherein columns of the codebook correspond to the two or more available rank values; and
selecting the first indicators based on a maximization of the objective value over the codebook;
transmitting a feedback data structure over the wireless channel from the first wireless node and to the second wireless node, wherein the feedback data structure includes the first indicators, wherein said transmitting is performed by a wireless interface.
2. The method of claim 1, wherein the feedback data structure includes one or more indicators for each frequency band in a plurality of frequency bands, wherein, for a first of the frequency bands, the one or more corresponding indicators include the first indicators.
3. The method of claim 2, wherein, for each of the frequency bands, the one or more corresponding indicators include:
a corresponding band-specific PMI value; and
a corresponding band-specific rank mode indicator.
4. The method of claim 1, wherein the objective value is a value representing channel capacity.
5. The method of claim 1, wherein the set of two or more available rank values includes rank one and rank two.
6. A method for operating a first wireless node as part of a closed loop multiple-input multiple-output (MIMO) communication system including the first wireless node and a second wireless node, the method comprising:
receiving a feedback data structure that is transmitted over a wireless medium by the second wireless node, wherein the feedback data structure contains first indicators, wherein said receiving is performed by a wireless interface;
operating, by digital circuitry, on signal data based on coding recommended by the first indicators in order to obtain transmit signals, wherein the first indicators include a precoding matrix indicator (PMI) and a rank mode indicator;
transmitting, by the wireless interface, the transmit signals to the second wireless node through the wireless medium;
wherein the first indicators have been determined based on an estimated channel matrix H, wherein the first indicators have been determined at the second wireless node by:
computing an objective value for each precoding matrix in a predefined codebook, wherein rows of the codebook correspond to two or more available PMI values, wherein columns of the codebook correspond to two or more available rank values; and
selecting the first indicators based on a maximization of the objective value over the codebook.
7. The method of claim 6, wherein the feedback data structure includes one or more indicators for each frequency band in a plurality of frequency bands, wherein, for a first of the frequency bands, said one or more corresponding indicators include the first indicators.
8. The method of claim 7, wherein, for each of the frequency bands, the one or more corresponding indicators include:
a corresponding band-specific PMI value; and
a corresponding band-specific rank mode indicator.
9. The method of claim 6, wherein the objective value is channel capacity.
10. The method of claim 6, wherein the set of two or more available rank values includes rank one and rank two.
11. The method of claim 6, wherein the one or more first indicators include the precoding matrix indicator, wherein the precoding matrix indicator and the rank mode indicator are used by the first wireless node to access a precoding matrix from the predefined codebook, wherein the precoding matrix is used by the first wireless node to precode one or more layers of the signal data to obtain the transmit signals, wherein the transmit signals are transmitted via respective antennas of the first wireless node.
12. A first wireless node for operating as part of a closed loop multiple-input multiple-output (MIMO) communication system including the first wireless node and a second wireless node, the first wireless node comprising:
digital circuitry configured to:
estimate a channel matrix H of a wireless channel from the second wireless node to the first wireless node; and
compute first indicators based on the channel matrix H, wherein the first indicators identify recommended coding for signaling to be transmitted from the second wireless node to the first wireless node, wherein the first indicators include: a precoding matrix indicator (PMI) selected from a set of two or more available PMI values, and a rank mode indicator selected from a set of two or more available rank values, wherein said computing the first indicators includes:
computing an objective value for each precoding matrix in a predefined codebook, wherein rows of the codebook correspond to the two or more available PMI values wherein columns of the codebook correspond to the two or more available rank values; and
selecting the first indicators based on a maximization of the objective value over the codebook;
a wireless interface configured to transmit a feedback data structure over the wireless channel from the first wireless node and to the second wireless node, wherein the feedback data structure includes the first indicators, wherein said transmitting is performed by a wireless interface.
13. The first wireless node of claim 12, wherein the feedback data structure includes one or more indicators for each frequency band in a plurality of frequency bands, wherein, for a first of the frequency bands, the one or more corresponding indicators include the first indicators.
14. The first wireless node of claim 13, wherein, for each of the frequency bands, the one or more corresponding indicators include:
a corresponding band-specific PMI value; and
a corresponding band-specific rank mode indicator.
15. The first wireless node of claim 12, wherein the objective value is a value representing channel capacity.
16. A first wireless node for operating as part of a closed loop multiple-input multiple-output (MIMO) communication system including the first wireless node and a second wireless node, the first wireless node comprising:
digital circuitry configured to:
receive a feedback data structure that is transmitted over a wireless medium by the second wireless node, wherein the feedback data structure contains first indicators;
operate on signal data based on coding recommended by the first indicators in order to obtain transmit signals, wherein the first indicators include: a precoding matrix indicator (PMI) and a rank mode indicator;
a wireless interface configured to transmit the transmit signals to the second wireless node through the wireless medium;
wherein the first indicators have been determined based on an estimated channel matrix H, wherein the first indicators have been determined at the second wireless node by:
computing an objective value for each precoding matrix in a predefined codebook, wherein rows of the codebook correspond to two or more available PMI values, wherein columns of the codebook correspond to two or more available rank values; and
selecting the first indicators based on a maximization of the objective value over the codebook.
17. The first wireless node of claim 16, wherein the feedback data structure includes one or more indicators for each frequency band in a plurality of frequency bands, wherein, for a first of the frequency bands, said one or more corresponding indicators include the first indicators.
18. The first wireless node of claim 17, wherein, for each of the frequency bands, the one or more corresponding indicators include:
a corresponding band-specific PMI value; and
a corresponding band-specific rank mode indicator.
19. The first wireless node of claim 16, wherein the objective value is channel capacity.
20. A non-transitory memory medium for operating a first wireless node as part of a closed loop multiple-input multiple-output (MIMO) communication system including the first wireless node and a second wireless node, wherein the memory medium stores program instructions, wherein the program instructions, when executed by a processor, cause the processor to:
estimate a channel matrix H of a wireless channel from the second wireless node to the first wireless node;
compute first indicators based on the channel matrix H, wherein the first indicators identify recommended coding for signaling to be transmitted from the second wireless node to the first wireless node, wherein the first indicators include: a precoding matrix indicator (PMI) selected from a set of two or more available PMI values, and a rank mode indicator selected from a set of two or more available rank values, wherein said estimating and said computing are performed by digital circuitry, wherein said computing the first indicators includes:
computing an objective value for each precoding matrix in a predefined codebook, wherein rows of the codebook correspond to the two or more available PMI values, wherein columns of the codebook correspond to the two or more available rank values; and
selecting the first indicators based on a maximization of the objective value over the codebook.
21. The memory medium of claim 20, wherein the feedback data structure includes one or more indicators for each frequency band in a plurality of frequency bands, wherein, for a first of the frequency bands, the one or more corresponding indicators include the first indicators.
22. The memory medium of claim 21, wherein, for each of the frequency bands, the one or more corresponding indicators include:
a corresponding band-specific PMI value; and
a corresponding band-specific rank mode indicator.
23. The memory medium of claim 20, wherein the objective value is a value representing channel capacity.
24. A non-transitory memory medium for operating a first wireless node as part of a closed loop multiple-input multiple-output (MIMO) communication system including the first wireless node and a second wireless node, wherein the memory medium stores program instructions, wherein the program instructions, when executed b a processor, cause the processor to:
receive a feedback data structure that is transmitted over a wireless medium by the second wireless node, wherein the feedback data structure contains first indicators; operating on signal data based on coding recommended by the first indicators in order to obtain transmit signals, wherein the first indicators include: a precoding matrix indicator (PMI) and a rank mode indicator; and
transmit the transmit signals to the second wireless node through the wireless medium;
wherein the first indicators have been determined based on an estimated channel matrix H, wherein the first indicators have been determined at the second wireless node by:
computing an objective value for each precoding matrix in a predefined codebook, wherein rows of the codebook correspond to two or more available PMI values, wherein columns of the codebook correspond to two or more available rank values; and
selecting the first indicators based on a maximization of the objective value over the codebook.
25. The memory medium of claim 24, wherein the feedback data structure includes one or more indicators for each frequency band in a plurality of frequency bands, wherein, for a first of the frequency bands, said one or more corresponding indicators include the first indicators.
26. The memory medium of claim 25, wherein, for each of the frequency bands, the one or more corresponding indicators include:
a corresponding band-specific PMI value; and
a corresponding band-specific rank mode indicator.
27. The memory medium of claim 24, wherein the objective value is channel capacity.
28. The method of claim 1, wherein the predefined codebook is stored in the first wireless node, wherein the predefined codebook is also stored in the second wireless node.
29. The method of claim 1, wherein the first indicators also include a channel quality indicator (CQI).
30. The method of claim 6, wherein the predefined codebook is stored in the first wireless node, wherein the predefined codebook is also stored in the second wireless node.
31. The method of claim 6, wherein the first indicators also include a channel quality indicator (CQI).
32. The first wireless node of claim 16, wherein the predefined codebook is stored in the first wireless node, wherein the predefined codebook is also stored in the second wireless node.
Associated Portfolios
Claim Chart | Technology | Creation Date | Download |
---|---|---|---|
Claim charts will soon be available!
|
To view claim charts you must become a Gold or Platinum Member.
Upgrade your subscriptionYou have reached the maximum number of patents which can be associated to your account per your subscription. If you wish to associate more patents
Please upgrade your subscription.Note:
The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
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.