Transport block selection for 1024 quadrature amplitude modulation (QAM)
AssigneeApple Inc.
InventorAlexei Davydov
Life of this patent
Estimating the term…
Abstract
Various embodiments provide techniques to determine a TBS for use with 1024 QAM communications that use more than one multiple input, multiple output (MIMO) layer based on a reference TBS for use with 1024 QAM communications that use a single MIMO layer. The reference TBS may be determined based on a TBS index and a resource allocation for the communication. The TBS index may be determined based on a modulation and coding scheme (MCS) index. Other embodiments may be described and claimed.
Claims21
A user equipment (UE), the UE comprising processor circuitry coupled with memory circuitry, the memory circuitry having instructions, which when executed by the processor circuitry, cause the processor circuitry to:
- receive a modulation and coding scheme (MCS) index;
- determine, based on the MCS index, that a modulation order to be used for a communication on a wireless cellular network is 1024 quadrature amplitude modulation (QAM);
- determine, based on the MCS index and a resource allocation for the communication, a first transport block size (TBS) for one multiple input, multiple output (MIMO) layer;
- determine, based on the first TBS, a second TBS for a transport block of the communication using four MIMO layers according to:
- First TBS
- Second TBS
- 105528
- 422232
- 107832
- 422232
- 112608
- 452832
- 117256
- 471192
- 124464
- 501792;
- and
- perform the communication on the wireless cellular network based on the second TBS.
An apparatus to be employed by a base station (gNB), the apparatus comprising processor circuitry coupled with memory circuitry, the memory circuitry having instructions, which when executed by the processor circuitry, cause the processor circuitry to:
- determine that a modulation order to be used to transmit a physical downlink shared channel (PDSCH) on a wireless cellular network is 1024 quadrature amplitude modulation (QAM);
- determine, based on the modulation order and a resource allocation for the PDSCH, a first transport block size (TBS) for one multiple input, multiple output (MIMO) layer;
- determine, based on the first TBS, a second TBS for a transport block of the PDSCH using four MIMO layers according to:
- First TBS
- Second TBS
- 105528
- 422232
- 107832
- 422232
- 112608
- 452832
- 117256
- 471192
- 124464
- 501792;
- and
- transmit one or more MIMO layers of the PDSCH based on the second TBS.
A user equipment (UE), the UE comprising processor circuitry coupled with memory circuitry, the memory circuitry having instructions, which when executed by the processor circuitry, cause the processor circuitry to:
- receive a downlink control information (DCI) that includes a modulation and coding scheme (MCS) index;
- determine, based on the MCS index, that a modulation order to be used for a physical downlink shared channel (PDSCH) on a wireless cellular network is 1024 quadrature amplitude modulation (QAM);
- determine, based on the MCS index and a resource allocation for the PDSCH, a first transport block size (TBS) for one multiple input, multiple output (MIMO) layer;
- determine, based on the first TBS, a second TBS for a transport block of the PDSCH using two MIMO layers according to:
- First TBS
- Second TBS
- 107832
- 214176
- 110136
- 220296
- 112608
- 226416
- 115040
- 230104
- 117256
- 236160
- 119816
- 236160
- 125808
- 251640;
- and
- receive the PDSCH based on the second TBS.
An apparatus to be employed by a base station, the apparatus comprising processor circuitry coupled with memory circuitry, the memory circuitry having instructions, which when executed by the processor circuitry, cause the processor circuitry to:
- determine that a modulation order to be used to transmit a physical downlink shared channel (PDSCH) on a wireless cellular network is 1024 quadrature amplitude modulation (QAM);
- determine, based on the modulation order and a resource allocation for the PDSCH, a first transport block size (TBS) for one multiple input, multiple output (MIMO) layer;
- determine, based on the first TBS, a second TBS for a transport block of the PDSCH using three MIMO layers according to:
- First TBS
- Second TBS
- 105528
- 314888
- 107832
- 324336
- 110136
- 324336
- 115040
- 339112
- 117256
- 351224
- 119816
- 363336
- 125808
- 375448;
- and
- perform or cause to perform the communication based on the second TBS.
Dependencies are inferred from the claim text.