Mapping between logical channels and configured grant (CG) configurations
A method ( 400 ) performed by a UE ( 600 ). The method includes the UE receiving (s 402 ) a message transmitted by a base station, wherein the message comprises: i) logical channel, LCH, information identifying a LCH and ii) configured grant, CG, information identifying at least one CG configuration to which the LCH is mapped.
1. A method performed by a user equipment (UE), the method comprising:
receiving a message transmitted by a base station, wherein the message comprises: i) logical channel (LCH) information identifying a LCH and ii) configured grant (CG) information identifying a set of two or more CG configurations to which the LCH is mapped, wherein the set of two or more CG configurations comprises a first CG configuration and a second CG configuration;
selecting the first CG configuration for transmitting a transport block (TB) associated with the LCH;
selecting the second CG configuration for retransmitting the TB; and
transmitting the TB in accordance with the first CG configuration.
2. The method of claim 1 , wherein
the message is a Radio Resouce Control (RRC) message that comprises a logical channel configuration information element, LogicalChannelConfig IE, associated with the LCH, and the LogicalChannelConfig IE comprises the CG information that identifies at least one CG configuration to which the LCH is mapped.
3. The method of claim 2 , wherein
the CG information comprises a sequence of one or more CG configuration identifiers, and
each CG configuration identifier included in the sequence of CG configuration identifiers identifies a CG configuration to which the LCH is mapped.
4. The method of claim 1 wherein the message is an RRC message, a MAC control element (CE), or downlink control information (DCI).
5. The method of claim 1 , wherein the UE selects the first CG configuration based on priority, load, listen-before-talk, and/or reliability values assigned to each of the CG configurations included in the set of CG configurations.
6. The method of any claim 1 , wherein the UE transmits to a base station control information indicating the first CG configuration and the TB associated with the logical channel.
7. The method of claim 6 , further comprising, after transmission of the TB, the UE receiving from the base station a message indicating a CG configuration that is different than the first CG configuration.
8. The method of claim 1 , further comprising: retransmitting the TB in accordance with the second CG configuration.
9. The method of claim 8 , wherein the retransmission of the TB is performed using the same HARQ process as the initial transmission.
10. The method of claim 1 , further comprising:
receiving a message transmitted by a base station, wherein the message comprises repetition information indicating to the UE that the UE is permitted to transmit a transport block, TB, in a first slot and retransmit the TB in the first slot.
11. A method performed by a base station, the method comprising:
generating a message;
transmitting the message to a user equipment (UE), wherein the message comprises: i) logical channel (LCH) information identifying a LCH and ii) configured grant (CG) information identifying a set of two or more CG configurations to which the LCH is mapped, wherein the set of two or more CG configurations comprises a first CG configuration and a second CG configuration;
receiving a transport block (TB) transmitted by the UE using a first CG configuration selected by the UE; and
receiving a retransmission of the TB, wherein the UE retransmitted the TB using a second CG configuration selected by the UE for the retransmission of the TB, and the second CG configuration is different than the first CG configuration.
12. The method of claim 11 , wherein
the message is an RRC message that comprises a logical channel configuration information element, LogicalChannelConfig IE, associated with the LCH, and the LogicalChannelConfig IE comprises the CG information that identifies at least one CG configuration to which the LCH is mapped.
13. The method of claim 12 , wherein
the CG information comprises a sequence of one or more CG configuration identifiers, and
each CG configuration identifier included in the sequence of CG configuration identifiers identifies a CG configuration to which the LCH is mapped.
14. The method of claim 11 , wherein the message is a Radio Resource Control (RRC) message, a MAC control element (CE), or downlink control information (DCI).
15. The method of claim 11 , further comprising
after receiving the TB, the base station transmitting to the UE a message indicating a CG configuration that is different than the first CG configuration selected by the UE.
16. The method of claim 11 , wherein the retransmission of the TB is performed using the same HARQ process as the initial transmission.
17. The method of claim 11 , further comprising:
generating a message, wherein the message comprises repetition information indicating to the UE that the UE is permitted to transmit a TB in a first slot and retransmit the TB in the first slot; and
transmitting the message to the UE.
18. A user equipment (UE), the UE comprising:
a receiver for receiving a message transmitted by a base station, wherein the message comprises: i) logical channel (LCH) information identifying a LCH and ii) configured grant (CG) information identifying a set of two or more CG configurations to which the LCH is mapped, wherein the set of two or more CG configurations comprises a first CG configuration and a second CG configuration;
processing circuitry configured to cause the UE to:
select the first CG configuration for transmitting a transport block (TB) associated with the LCH; and
select the second CG configuration for retransmitting the TB; and
a transmitter for transmitting the TB in accordance with the first CG configuration.
19. A base station, the base station comprising:
processing circuitry configured to generate a message comprising: i) logical channel (LCH) information identifying a LCH and ii) configured grant (CG) information identifying a set of two or more CG configurations to which the LCH is mapped, wherein the set of two or more CG configurations comprises a first CG configuration and a second CG configuration;
a transmitter for transmitting the message to a user equipment (UE);
a receiver for receiving a transport block (TB) transmitted by the UE using a first CG configuration selected by the UE; and
receiving a retransmission of the TB, wherein the UE retransmitted the TB using a second CG configuration selected by the UE for the retransmission of the TB, and the second CG configuration is different than the first CG configuration.
20. The method of claim 10 , wherein the message further indicates a required time offset between transmitting the TB and retransmitting the TB.