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US 9,313,006 B2Granted
Methods and apparatus for resource element mapping
AssigneeNokia Technologies Oy
InventorsTimo E. Lunttila, Esa T. Tiirola, Klaus Hugl
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Abstract
Improved mechanisms for using enhanced physical downlink control channel (EPDCCH) and enhanced physical hybrid indicator automated repeat request indicator channel (EPHICH) resources are described. A physical resource block (PRB) of an EPDCCH is specified and one or more EPHICH code blocks, which may also be referred to as an EPHICH resource element group (EPREG), are defined. One or more of the EPREGs is mapped into the EPDDCH PRB.
Claims20
An apparatus comprising:
- at least one processor;
- memory storing a program of instructions;
- wherein the memory storing the program of instructions is configured to, with the at least one processor, cause the apparatus to at least:
- define one or more physical resource blocks (PRBs) of an enhanced physical downlink control channel (EPDCCH);
- define one or more enhanced physical hybrid automatic repeat request indicator channel (EPHICH) groups each comprising one or more EPHICH resource element groups (EPREGs);
- and
- map the one or more of the EPREGs into the said one or more PRBs of the EPDCCH, with EPREG to resource element (RE) mapping within one PRB of the EPDCCH being accomplished according to a predefined allocation order, wherein the predefined allocation order comprises mapping each of the EPREGs for transmission using consecutive free resource elements of an orthogonal frequency division multiplexing (OFDM) symbol having sufficient free resource elements to accommodate the entire EPREG.
4 more elements
An apparatus comprising:
- at least one processor;
- memory storing a program of instructions;
- wherein the memory storing the program of instructions is configured to, with the at least one processor, cause the apparatus to at least:
- receive an enhanced physical downlink control channel (EPDCCH) set configuration comprising one or more physical resource blocks (PRBs);
- receive signaling indicating a number of enhanced physical hybrid automatic repeat request indicator channel (EPHICH) groups on the EPDCCH set, each EPHICH group comprising a plurality of EPHICH resource element groups (EPREGs), wherein one or more of the EPREGs are mapped using EPREG to resource element (RE) mapping into one or more PRBs of the EPDCCH, with EPREG to resource element (RE) mapping within one PRB of the EPDCCH being accomplished according to a predefined allocation order, wherein the predefined allocation order comprises mapping each of the EPREGs for transmission using consecutive free resource elements of an orthogonal frequency division multiplexing (OFDM) symbol having sufficient free resource elements to accommodate the entire EPREG;
- determine the number of EPREGs for each EPHICH group for each of a plurality of PRB pairs defined by the EPDCCH set configuration;
- determine an index of an EPHICH channel including the EPHICH group corresponding to physical uplink shared channel (PUSCH) data associated with the apparatus;
- and
- based on the index of the EPHICH channel, identify EPREGs carrying hybrid automatic repeat request (HARQ) information for the apparatus.
6 more elements
A method comprising:
- defining one or more physical resource blocks (PRBs) of an enhanced physical downlink control channel (EPDCCH);
- defining one or more enhanced physical hybrid automatic repeat request indicator channel (EPHICH) groups each comprising one or more EPHICH resource element groups (EPREGs);
- and
- mapping the one or more of the EPREGs into the said one or more PRBs of the EPDCCH, with EPREG to resource element (RE) mapping within PRB of the EPDCCH being accomplished according to a predefined allocation order, wherein the predefined allocation order comprises mapping each of the EPREGs for transmission using consecutive free resource elements of an orthogonal frequency division multiplexing (OFDM) symbol having sufficient free resource elements to accommodate the entire EPREG.
1 more element
A method comprising:
- receiving an enhanced physical downlink control channel (EPDCCH) set configuration comprising one or more physical resource blocks (PRBs);
- receiving signaling indicating a number of enhanced physical hybrid automatic repeat request indicator channel (EPHICH) groups on an EPDCCH set, each EPHICH group comprising a plurality of EPHICH resource element groups (EPREGs), wherein one or more of the EPREGs are mapped using EPREG to resource element (RE) mapping into one or more PRBs of the EPDCCH, with EPREG to resource element (RE) mapping within one PRB of the EPDCCH being accomplished according to a predefined allocation order, wherein the predefined allocation order comprises mapping each of the EPREGs for transmission using consecutive free resource elements of an orthogonal frequency division multiplexing (OFDM) symbol having sufficient free resource elements to accommodate the entire EPREG;
- determining the number of EPREGs for each EPHICH group for each of a plurality of PRB pairs defined by the EPDCCH set configuration;
- determining an index of an EPHICH channel including the EPHICH group corresponding to physical uplink shared channel (PUSCH) data;
- and
- based on the index of the EPHICH channel, identifying EPREGs carrying hybrid automatic repeat request (HARQ) information.
3 more elements
A non-transitory computer readable medium storing a program of instructions, execution of which by a processor configures an apparatus to at least:
- define one or more physical resource blocks (PRBs) of an enhanced physical downlink control channel (EPDCCH);
- define one or more enhanced physical hybrid automatic repeat request indicator channel (EPHICH) groups each comprising one or more EPHICH resource element groups (EPREGs);
- and
- map the one or more of the EPREGs into the said one or more PRBs of the EPDCCH, with EPREG to resource element (RE) mapping within one PRB of the EPDCCH being accomplished according to a predefined allocation order, wherein the predefined allocation order comprises mapping each of the EPREGs for transmission using consecutive free resource elements of an orthogonal frequency division multiplexing (OFDM) symbol having sufficient free resource elements to accommodate the entire EPREG.
1 more element
Dependencies are inferred from the claim text.