Abstract
A method for transmitting channel quality information based on a differential scheme is disclosed. When channel quality information of a predetermined number of sub-bands selected by a receiver in a frequency selective channel is transmitted total average channel information is transmitted. Channel information of the selected sub-bands is transmitted as sub-band differential information associated with average channel information. In this case the sub-band differential information may be denoted by a specific value contained in a differential-value range including only positive (+) values. If at least two channel quality information is transmitted by a MIMO system channel quality information of one channel is transmitted then channel quality information of the other channel is transmitted as spatial differential information. In this case the spatial differential information is denoted by a specific value contained in a differential-value range asymmetrical on the basis of 0.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
Not Available | 17/09/2012 | ISLD-201209-004 | LG | No | Family Member | ||||
Not Available | 23/10/2012 | ISLD-201209-014 | LG | No | Family Member | ||||
4G | 13/07/2015 | ISLD-201507-022 | LG | No | Family Member | ||||
4G | 26/10/2016 | ISLD-201610-010 | LG | Yes | Basis Patent |
Specification Information
Specification Information
Technologies
Family Information
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Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||
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US2014369262A1 | 4G | 13/07/2015 | ISLD-201507-022 | LG | No | Family Member | ||||
US2014369262A1 | 4G | 26/10/2016 | ISLD-201610-010 | LG | Yes | Basis Patent |
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Technologies
Product
Use Cases
Services
Claim
1. A method for transmitting, by a mobile station, channel quality information (CQI) in a mobile communication system, the method comprising:
transmitting one CQI value for a set of sub-bands; and
transmitting one differential CQI value for M preferred sub-bands among the set of sub-bands and an index indicating the M preferred sub-bands, wherein the M preferred sub-bands are selected within the set of sub-bands by the mobile station,
wherein the one differential CQI value is one of a predetermined number of differential CQI values and indicates a difference value given by:
the difference value=one CQI value for the M preferred sub-bands?the one CQI value for the set of sub-bands,
wherein the predetermined number of differential CQI values include more differential CQI values for non-negative difference values than differential CQI values for negative difference values, and
wherein the index is a combinatorial index corresponding to a combination selected from among NCM combinations, wherein N is a total number of sub-bands in the set of sub-bands, and NCM=N!/{M!(N?M)!}.
2. The method according to claim 1, wherein the set of sub-bands includes all sub-bands in a given frequency range.
3. The method according to claim 1, wherein the one differential CQI value is 2-bit information.
4. The method according to claim 1, wherein the one differential CQI value is transmitted on a physical uplink shared channel.
5. The method according to claim 1, wherein M is determined based on a system bandwidth of the mobile communication system.
6. A method for receiving, by a base station, channel quality information (CQI) in a mobile communication system, the method comprising:
receiving one CQI value for a first set of sub-bands; and
receiving one differential CQI value for M preferred sub-bands among the set of sub-bands and an index indicating the M preferred sub-bands, wherein the M preferred sub-bands are selected within the set of sub-bands by the mobile station,
wherein the one differential CQI value is one of a predetermined number of differential CQI values and indicates a difference value given by:
the difference value=one CQI value for the M preferred sub-bands?the one average CQI value for the set of sub-bands,
wherein the predetermined number of differential CQI values include more differential CQI values for non-negative difference values than differential CQI values for negative difference values, and
wherein the index is a combinatorial index corresponding to a combination selected from among NCM combinations, wherein N is a total number of sub-bands in the set of sub-bands, and NCM=N!/{M!(N?M)!}.
7. The method according to claim 6, wherein the set of sub-bands includes all sub-bands in a given frequency range.
8. The method according to claim 6, wherein the one differential CQI value is 2-bit information.
9. The method according to claim 6, wherein the one differential CQI value is received on a physical uplink shared channel.
10. The method according to claim 6, wherein M is determined based on a system bandwidth of the mobile communication system.
11. A mobile station for channel quality information (CQI) in a mobile communication system, the mobile station comprising:
one or more antennas to transmit and receive signals with a base station; and
a transmitter configured to transmit one CQI value for a set of sub-bands, one differential CQI value for M preferred sub-bands among the set of sub-bands, and an index indicating the M preferred sub-bands, wherein the M preferred sub-bands are selected within the set of sub-bands by the mobile station,
wherein the one differential CQI value is one of a predetermined number of differential CQI values and indicates a difference value given by:
the difference value=one CQI value for the M preferred sub-bands?the one CQI value for the set of sub-bands,
wherein the predetermined number of differential CQI values include more differential CQI values for non-negative difference values than differential CQI values for negative difference values, and
wherein the index is a combinatorial index corresponding to a combination selected from among NCM combinations, wherein N is a total number of sub-bands in the set of sub-bands, and NCM=N!/{M!(N?M)!}.
12. The mobile station according to claim 11, wherein the set of sub-bands includes all sub-bands in a given frequency range.
13. The mobile station according to claim 11, wherein the one differential CQI value is 2-bit information.
14. The mobile station according to claim 11, wherein the one differential CQI value is transmitted on a physical uplink shared channel.
15. The mobile station according to claim 11, wherein M is determined based on a system bandwidth of the mobile communication system.
16. A base station for receiving channel quality information (CQI) in a mobile communication system, the base station comprising:
one or more antennas to transmit and receive signals with a mobile station; and
a receiver configured to receive one CQI value for a set of sub-bands, one differential CQI value for M preferred sub-bands among the set of sub-bands, and an index indicating the M preferred sub-bands, wherein the M preferred sub-bands are selected within the set of sub-bands by the mobile station,
wherein the one differential CQI value is one of a predetermined number of differential CQI values and indicates a difference value given by:
the difference value=one CQI value for the M preferred sub-bands?the one CQI value for the set of sub-bands,
wherein the predetermined number of differential CQI values include more differential CQI values for non-negative difference values than differential CQI values for negative difference values, and
wherein the index is a combinatorial index corresponding to a combination selected from among NCM combinations, wherein N is a total number of sub-bands in the set of sub-bands, and NCM=N!/{M!(N?M)!}.
17. The base station according to claim 16, wherein the set of sub-bands includes all sub-bands in a given frequency range.
18. The base station according to claim 16, wherein the one differential CQI value is 2-bit information.
19. The base station according to claim 16, wherein the one differential CQI value is received on a physical uplink shared channel.
20. The base station according to claim 16, wherein M is determined based on a system bandwidth of the mobile communication system.
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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.