Apparatus and method for synchronous multiplexing and multiple access for different latency targets utilizing thin control
Aspects of the disclosure provide for a thin control channel structure that can be utilized to enable multiplexing of two or more data transmission formats. For example, a thin control channel may carry information that enables ongoing transmissions utilizing a first, relatively long transmission time interval (TTI) to be punctured, and during the punctured portion of the long TTI, a transmission utilizing a second, relatively short TTI may be inserted. This puncturing is enabled by virtue of a thin channel structure wherein a control channel can carry scheduling information, grants, etc., informing receiving devices of the puncturing that is occurring or will occur. Furthermore, the thin control channel can be utilized to carry other control information, not being limited to puncturing information. Other aspects, embodiments, and features are also claimed and described.
1. A method of wireless communication, comprising:
receiving a resource assignment on a downlink assignment channel, the resource assignment comprising a grant of time—frequency resources for transmitting data on an uplink data channel during a first transmission time interval (TTI);
transmitting the data on the uplink data channel during the first TTI;
receiving an uplink grant modification on a downlink control channel during a second TTI shorter in duration than the first TTI and overlapping with a portion of the first TTI, the uplink grant modification comprising information indicating that the grant of time—frequency resources is modified, and identifying time—frequency resources during which to modify the transmission of the data; and
modifying the transmission of the data according to the uplink grant modification.
2. The method of claim 1 , wherein the modifying of the transmission of the data comprises puncturing the data.
3. The method of claim 1 , wherein the modifying of the transmission of the data comprises modifying a rate matching algorithm to account for data losses in accordance with the modified transmission of the data.
4. A user equipment (UE) configured for wireless communication, comprising:
at least one processor;
a computer-readable medium communicatively coupled to the at least one processor; and
a transceiver communicatively coupled to the at least one processor,
wherein the at least one processor is configured to:
utilize the transceiver to receive a resource assignment on a downlink assignment channel, the resource assignment comprising a grant of time—frequency resources for transmitting data on an uplink data channel during a first transmission time interval (TTI);
utilize the transceiver to transmit the data on the uplink data channel during the first TTI;
utilize the transceiver to receive an uplink grant modification on a downlink control channel during a second TTI shorter in duration than the first TTI and overlapping with a portion of the first TTI, the uplink grant modification comprising information indicating that the grant of time—frequency resources is modified, and identifying time—frequency resources during which to modify the transmission of the data; and
modify the transmission of the data according to the uplink grant modification.
5. The UE of claim 4 , wherein the at least one processor, being configured to modify the transmission of the user data, is further configured to puncture the data.
6. The UE of claim 4 , wherein the at least one processor, being configured to modify the transmission of the data, is further configured to modify a rate matching algorithm to account for data losses in accordance with the modified transmission of the data.
7. A user equipment (UE) configured for wireless communication, comprising:
means for receiving a resource assignment on a downlink assignment channel, the resource assignment comprising a grant of time—frequency resources for transmitting data on an uplink data channel during a first transmission time interval (TTI);
means for transmitting the data on the uplink data channel during the first TTI;
means for receiving an uplink grant modification on a downlink control channel during a second TTI shorter in duration than the first TTI and overlapping with a portion of the first TTI, the uplink grant modification comprising information indicating that the grant of time—frequency resources is modified, and identifying time—frequency resources during which to modify the transmission of the data; and
means for modifying the transmission of the data according to the uplink grant modification.
8. The UE of claim 7 , wherein the means for modifying the transmission of the user data is further configured for puncturing the data.
9. The UE of claim 7 , wherein the means for modifying the transmission of the user data is further configured for modifying a rate matching algorithm to account for data losses in accordance with the modified transmission of the data.
10. A non-transitory computer-readable medium storing computer-executable code, comprising:
instructions for causing a computer to receive a resource assignment on a downlink assignment channel, the resource assignment comprising a grant of time—frequency resources for transmitting data on an uplink data channel during a first transmission time interval (TTI);
instructions for causing a computer to transmit the data on the uplink data channel during the first TTI;
instructions for causing a computer to receive an uplink grant modification on a downlink control channel during a second TTI shorter in duration than the first TTI and overlapping with a portion of the first TTI, the uplink grant modification comprising information indicating that the grant of time—frequency resources is modified, and identifying time—frequency resources during which to modify the transmission of the data; and
instructions for causing a computer to modify the transmission of the data according to the uplink grant modification.
11. The non-transitory computer-readable medium of claim 10 , wherein the instructions for causing a computer to modify the transmission of the data are further configured for puncturing the data.
12. The non-transitory computer-readable medium of claim 10 , wherein the instructions for causing a computer to modify the transmission of the data are further configured for modifying a rate matching algorithm to account for data losses in accordance with the modified transmission of the data.