Method and apparatus of handling discontinuous reception (DRX) timer for multicast data reception in a wireless communication system
AssigneeASUS Technology Licensing Inc.
InventorLi-Chih Tseng
Life of this patent
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Abstract
A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE receives and/or detects a multicast transmission of downlink data on a configured downlink multicast resource, wherein the multicast transmission is associated with a Hybrid Automatic Repeat Request (HARQ) process. The UE starts a multicast HARQ Round Trip Time (RTT) timer associated with the HARQ process. The UE determines whether to start a unicast HARQ RTT timer associated with the HARQ process based on whether the UE is configured with a Configured Scheduling Radio Network Temporary Identifier (CS-RNTI).
Claims20
A method of a User Equipment (UE), comprising:
- being configured with a Group Configured Scheduling RNTI (G-CS-RNTI) by a base station, wherein the G-CS-RNTI is used for Semi-Persistent Scheduling (SPS) activation associated with a multicast configured downlink resource;
- at least one of receiving or detecting a multicast transmission of downlink data on the multicast configured downlink resource after SPS activation, wherein the multicast transmission is associated with a Hybrid Automatic Repeat Request (HARQ) process;
- starting a multicast HARQ Round Trip Time (RTT) timer associated with the HARQ process;
- and
- determining whether to start a unicast HARQ RTT timer associated with the HARQ process based on whether the UE is configured with a Configured Scheduling Radio Network Temporary Identifier (CS-RNTI).
A method of a User Equipment (UE), comprising:
- receiving a configuration indicative of a feedback mode for multicast transmission;
- being configured with a Group Configured Scheduling RNTI (G-CS-RNTI) by a base station, wherein the G-CS-RNTI is used for Semi-Persistent Scheduling (SPS) activation associated with a multicast configured downlink resource;
- at least one of receiving or detecting a first multicast transmission of downlink data on the multicast configured downlink resource after SPS activation, wherein the first multicast transmission is associated with a Hybrid Automatic Repeat Request (HARQ) process;
- transmitting a negative HARQ feedback for the first multicast transmission;
- starting a multicast HARQ Round Trip Time (RTT) timer associated with the HARQ process;
- and
- determining whether to start a unicast HARQ RTT timer associated with the HARQ process based on the feedback mode and whether the UE is configured with a Configured Scheduling Radio Network Temporary Identifier (CS-RNTI).
A User Equipment (UE) comprising:
- a control circuit;
- a processor installed in the control circuit;
- and
- a memory installed in the control circuit and operatively coupled to the processor, wherein the processor is configured to execute a program code stored in the memory to perform operations, the operations comprising:
- being configured with a Group Configured Scheduling RNTI (G-CS-RNTI) by a base station, wherein the G-CS-RNTI is used for Semi-Persistent Scheduling (SPS) activation associated with a multicast configured downlink resource;
- at least one of receiving or detecting a multicast transmission of downlink data on the multicast configured downlink resource after SPS activation, wherein the multicast transmission is associated with a Hybrid Automatic Repeat Request (HARQ) process;
- starting a multicast HARQ Round Trip Time (RTT) timer associated with the HARQ process;
- and
- determining whether to start a unicast HARQ RTT timer associated with the HARQ process based on whether the UE is configured with a Configured Scheduling Radio Network Temporary Identifier (CS-RNTI).
Dependencies are inferred from the claim text.