Method of determining feedback in a communication system
First Claim
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1. A method of determining feedback in a communication system, the method comprising:
- mapping by a transmitting apparatus groups of bits of transmission data comprising data entities of different levels of importance to multi-level modulation symbols, wherein the bits of a respective data entity within each group of bits is mapped to a respective hierarchical part of the respective multi-level modulation symbol,transmitting the multi-level modulation symbols from the transmitting apparatus to a receiving apparatus,determining at the receiving apparatus for which data entities of the received data feedback should be provided, wherein said determining is based on (i) a decision which data entities are required and which data entities are optional to satisfy a quality of service (QoS) requirement, and (ii) the hierarchical parts of the respective multi-level modulation symbols that correspond to data entities required to satisfy the QoS requirement, andtransmitting said feedback for only those data entities for which it has been determined that said feedback should be provided from the receiving apparatus to the transmitting apparatus to thereby satisfy said QoS requirement.
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Abstract
A method of determining feedback in a communication system, wherein data is transmitted from a transmitter to a receiver, and in response to data reception at the receiver, feedback is generated based on the received data comprising the step of classifying the data into data entities of different levels of importance and the step of determining feedback based on at least one data entity of one level of importance. The invention further relates to a corresponding receiver, transmitter and a respective communication system.
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Citations
31 Claims
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1. A method of determining feedback in a communication system, the method comprising:
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mapping by a transmitting apparatus groups of bits of transmission data comprising data entities of different levels of importance to multi-level modulation symbols, wherein the bits of a respective data entity within each group of bits is mapped to a respective hierarchical part of the respective multi-level modulation symbol, transmitting the multi-level modulation symbols from the transmitting apparatus to a receiving apparatus, determining at the receiving apparatus for which data entities of the received data feedback should be provided, wherein said determining is based on (i) a decision which data entities are required and which data entities are optional to satisfy a quality of service (QoS) requirement, and (ii) the hierarchical parts of the respective multi-level modulation symbols that correspond to data entities required to satisfy the QoS requirement, and transmitting said feedback for only those data entities for which it has been determined that said feedback should be provided from the receiving apparatus to the transmitting apparatus to thereby satisfy said QoS requirement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A receiving apparatus for use in a communication system comprising:
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a receiver section that receives multi-level modulation symbols, a de-mapping section that de-maps the multi-level modulation symbols to bits of a respective data entity within each group of bits, wherein the de-mapping section is adapted to de-map respective hierarchical parts of a respective multi-level modulation symbol to bits of a respective data entity within each group of bits, a determination section that determines for which data entities of the received data feedback should be provided, wherein the determining section bases the determination on (i) a decision which data entities are required and which data entities are optional to satisfy a quality of service (QoS) requirement, and (ii) the hierarchical parts of the respective multi-level modulation symbols that correspond to data entities required to satisfy the QoS requirement, and a transmitter section that only transmits said feedback for those data entities for which it has been determined that said feedback should be provided from the receiving apparatus to the transmitting apparatus to thereby satisfy said quality of service (QoS) requirement. - View Dependent Claims (20, 25, 26, 27, 28, 29, 30, 31)
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21. A transmitting apparatus for use in a communication system comprising:
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a mapping section that maps groups of bits of transmission data comprising data entities of different levels of importance to multi-level modulation symbols, wherein the mapping section is adapted to map the bits of a respective data entity within each group of bits to a respective hierarchical part of the respective multi-level modulation symbol, a transmitter section that transmits said multi-level modulation symbols to a receiving apparatus, and a receiving section that receives feedback for only those data entities of the transmitted data for which the receiving apparatus has determined that said feedback should be provided to satisfy a quality of service (QoS) requirement. - View Dependent Claims (22, 23, 24)
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Specification