Methods and apparatuses for skipping transport block transmission depending on uplink control information transmission
Systems, methods, apparatuses, and computer program products for skipping TB transmission depending on UCI transmission are provided. One method includes receiving, by a UE, a configuration message from a network node. The configuration message may indicate to the UE a configuration of skipping uplink (UL) transmission when there is no uplink data. The method may then include determining whether the UE is requested for uplink control information (UCI) transmission for a subframe with UL grant. If it is determined that the UE is requested for UCI transmission, then the method may include generating and transmitting a transport block containing padding buffer status report (BSR).
1. A method comprising:
receiving, by a user equipment, a configuration message from a network node, wherein the configuration message indicates to the user equipment to skip uplink transmission for an uplink grant when there is no uplink data; and
determining whether the user equipment is requested for uplink control information transmission for a subframe with the uplink grant, wherein the uplink control information comprises an aperiodic channel quality indicator;
when it is determined that the user equipment is requested for the uplink control information transmission for the subframe with the uplink grant, generating a transport block even when there is no uplink data to be transmitted; and
transmitting the generated transport block and the uplink control information to the network node in the uplink grant on a physical uplink shared channel.
2. The method according to claim 1 , wherein, when it is determined that the user equipment is not requested for the uplink control information transmission for the subframe with the uplink grant and a protocol data unit is a padding buffer status report only protocol data unit, skipping generating a transport block.
3. The method according to claim 1 , wherein the uplink control information further comprises at least one of: a periodic channel quality indicator and a hybrid automatic repeat request feedback.
4. The method according to claim 1 , further comprising receiving the uplink grant from the network node.
5. An apparatus comprising:
at least one processor; and
at least one memory including computer program code, the at least one memory and the computer program code being configured, with the at least one processor, to cause the apparatus at least to:
receive a configuration message from a network node, wherein the configuration message indicates to the apparatus to skip uplink transmission for an uplink grant when there is no uplink data;
determine whether the apparatus is requested for uplink control information transmission for a subframe with the uplink grant, wherein the uplink control information comprises an aperiodic channel quality indicator;
when it is determined that the apparatus is requested for the uplink control information transmission for the subframe with the uplink grant, generating a transport block even when there is no uplink data to be transmitted; and
transmitting the generated transport block and the uplink control information to the network node in the uplink grant on a physical uplink shared channel.
6. The apparatus according to claim 5 , wherein, when it is determined that the apparatus is not requested for the uplink control information transmission for the subframe with the uplink grant and a protocol data unit is a padding buffer status report only protocol data unit, the at least one memory and the computer program code arc further configured, with the at least one processor, to cause the apparatus at least to skip generating a transport block.
7. The apparatus according to claim 5 , wherein the uplink control information further comprises at least one of: a periodic channel quality indicator and a hybrid automatic repeat request feedback.
8. The apparatus according to claim 5 , wherein the at least one memory and the computer program code are further configured, with the at least one processor, to cause the apparatus at least to receive the uplink grant from the network node.
9. The apparatus according to claim 5 , wherein the apparatus comprises a user equipment.
10. A method comprising:
transmitting, by a network node, a configuration message for configuring at least one user equipment to skip uplink transmission for an uplink grant when there is no uplink data; and
receiving, from the at least one user equipment, a transport block comprising uplink control information in the uplink grant even when there is no uplink data to be transmitted in the uplink grant, wherein the uplink control information comprises an aperiodic channel quality indicator.
11. The method according to claim 10 , wherein the uplink control information further comprises at least one of: a periodic channel quality indicator and a hybrid automatic repeat request feedback.
12. The method according to claim 10 , further comprising transmitting the uplink grant to the at least one user equipment.
13. An apparatus comprising:
at least one processor; and
at least one memory including computer program code, the at least one memory and the computer program code being configured, with the at least one processor, to cause the apparatus at least to:
transmit a configuration message for configuring at least one user equipment to skip uplink transmission for an uplink grant when there is no uplink data; and
receive, from the at least one user equipment, a transport block for a subframe with comprising uplink control information in the uplink grant even when there is no uplink data to be transmitted in the uplink grant, wherein the uplink control information comprises an aperiodic channel quality indicator.
14. The apparatus according to claim 13 , wherein the uplink control information further comprises at least one of: a periodic channel quality indicator and a hybrid automatic repeat request feedback.
15. The apparatus according to claim 13 , wherein the at least one memory and the computer program code are further configured, with the at least one processor, to cause the apparatus at least to transmit the uplink grant to the at least one user equipment.
16. The apparatus according to claim 5 , wherein the generated transport block comprises padded zeros multiplexed with the uplink control information.
17. The apparatus according to claim 13 , wherein the transport block comprises padded zeros multiplexed with the uplink control information.
18. The apparatus according to claim 5 , wherein the type of the uplink grant is a dynamic uplink grant.
19. The apparatus according to claim 5 , wherein uplink data refers to uplink data from a medium access control layer.
20. The apparatus according to claim 5 , wherein determining whether the apparatus is requested for uplink control information transmission for the uplink grant is based on receiving a request for the aperiodic channel quality indicator.