METHOD AND APPARATUS FOR ENHANCED MODULATION IN A WIRLESS COMMUNICATION SYSTEM
First Claim
Patent Images
1. In a wireless network comprising a network entity, a method for a user equipment (“
- UE”
) to process downlink transmissions from the network entity, the method comprising;
transmitting, by the UE to the network entity, a message identifying a first type of modulation;
receiving, by the UE from the network entity, a first configuration message that indicates that the UE is to be configured to use the first type of modulation;
in response to the first configuration message, selecting a first set of modulation and coding schemes;
receiving, by the UE from the network entity, a first downlink control information message, wherein the first downlink control information message includes a designation of a first modulation and coding scheme and an assignment of a first set of downlink resource blocks to the UE, and wherein the first modulation and coding scheme is one of the first set of modulation and coding schemes;
determining, based on the first modulation and coding scheme, that the UE is to use the first type of modulation;
determining a first transport block size based on the first modulation and coding scheme and on the first set of assigned downlink resource blocks;
receiving a first downlink signal from the network entity; and
processing the first downlink signal using the first type of modulation and the first transport block size.
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Abstract
Disclosed are methods for facilitating enhanced modulation (such as 256-QAM) in wireless networks. The methods generally involve enhancements to physical-layer signaling (such as enhanced MCS tables), enhancements to transport-block tables (to support enhanced MCS values), CSI-feedback enhancements (to ensure that the UE signals the appropriate MCS for enhanced modulation), enhancements to higher-layer signaling, allowing UEs to signal their ability to use the enhanced modulation, and UE category enhancements.
95 Citations
20 Claims
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1. In a wireless network comprising a network entity, a method for a user equipment (“
- UE”
) to process downlink transmissions from the network entity, the method comprising;transmitting, by the UE to the network entity, a message identifying a first type of modulation; receiving, by the UE from the network entity, a first configuration message that indicates that the UE is to be configured to use the first type of modulation; in response to the first configuration message, selecting a first set of modulation and coding schemes; receiving, by the UE from the network entity, a first downlink control information message, wherein the first downlink control information message includes a designation of a first modulation and coding scheme and an assignment of a first set of downlink resource blocks to the UE, and wherein the first modulation and coding scheme is one of the first set of modulation and coding schemes; determining, based on the first modulation and coding scheme, that the UE is to use the first type of modulation; determining a first transport block size based on the first modulation and coding scheme and on the first set of assigned downlink resource blocks; receiving a first downlink signal from the network entity; and processing the first downlink signal using the first type of modulation and the first transport block size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- UE”
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11. In a wireless network comprising a network entity, a method for a user equipment (“
- UE”
) to process downlink signals received from the network entity, the method comprising;transmitting, by the UE to the network entity, a message identifying a type of modulation; receiving, by the UE from the network entity, a configuration message indicating that the UE is to be configured to use the identified modulation type; receiving, by the UE from the network entity, a first downlink control information message that includes a resource block assignment and a first jointly coded value; determining, based on the resource block assignment and on the first jointly coded value, a type of modulation and a transport block size, wherein the determined modulation type is the same as the modulation type identified in the configuration message; receiving a downlink signal from the network entity; and processing the downlink signal using the determined type of modulation and the determined transport block size. - View Dependent Claims (12, 13, 14, 15, 16)
- UE”
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17. A method for a user equipment (“
- UE”
) to receive a downlink transmission from a wireless network entity, the method comprising;receiving, by the UE, a downlink control information message that includes a resource assignment for a transport block, a modulation and coding scheme index for the transport block, and a transmission rank indicator indicating a number of spatial layers to which the transport block is mapped; determining, based on the transmission rank indicator, that the transport block is mapped to four layers; acquiring, based on the resource assignment and on the modulation and coding scheme index, a first block size; determining, based on the acquired block size and on a translation mapping, a transport block size for the transport block, wherein the translation mapping includes accessing a pair of values corresponding to at least one row of;
- UE”
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18. In a wireless network environment comprising a network entity, a user equipment (“
- UE”
) comprising;a transceiver configured to; transmit, to the network entity, a message identifying a first type of modulation; receive, from the network entity, a first configuration message that indicates that the UE is to be configured to use the first type of modulation; receive, from the network entity, a first downlink signal; and receive, from the network entity, a first downlink control information message, wherein the first downlink control information message includes a designation of a first modulation and coding scheme and an assignment of a first set of downlink resource blocks to the UE; and a processor communicatively linked to the transceiver and configured to; select, in response to the first configuration message, a first set of modulation and coding schemes, wherein the first modulation and coding scheme is one of the first set of modulation and coding schemes; determine, based on the first modulation and coding scheme, that the UE is to use the first type of modulation; determine, based on the first modulation and coding scheme and on the first set of assigned downlink resource blocks, a first transport block size; and process the received signal using the first type of modulation and the first transport block size. - View Dependent Claims (19, 20)
- UE”
Specification