Discontinuous reception start offset coordinated with semi-persistent scheduling system and method
View Patent ↗An apparatus and method are provided for configuring a user agent to receive semi-persistent scheduling (SPS) transmissions independent of the user agent monitoring a physical downlink control channel (PDCCH). Also provided are an apparatus and method for configuring a user agent to monitor a PDCCH in a subframe to which one of a downlink assignment or an uplink grant is configured.
1. A user agent, comprising:
a processor enabled to configure the user agent to receive a downlink assignment configured for semi-persistent scheduling (SPS) transmissions independent of the user agent monitoring a physical downlink control channel (PDCCH), wherein the user agent is configured to use the configured downlink assignment for receiving an SPS transmission even if the configured downlink assignment does not align in time with an “on duration” period for monitoring the PDCCH.
2. The user agent of claim 1 , wherein the processor is further enabled to configure the user agent to start or restart an “on duration” timer when at least a starting condition is satisfied.
3. The user agent of claim 2 , wherein the user agent is configured to start or restart the “on duration” timer when the starting condition is satisfied and when an on duration timer configuration activation signal is received.
4. A method implemented in a user agent, the method comprising:
receiving a downlink assignment configured for semi-persistent scheduling (SPS) transmissions independently of the user agent monitoring a physical downlink control channel (PDCCH); and
using the configured downlink assignment to receive an SPS transmission even if the configured downlink assignment does not align in time with an “on duration” period for monitoring the PDCCH.
5. The method of claim 4 , further comprising:
starting or restarting an “on duration” timer when at least a starting condition is satisfied.
6. The method of claim 5 , further comprising:
starting or restarting the “on duration” timer when the starting condition is satisfied and when an on duration timer configuration activation signal is received.
7. A user agent, comprising:
a processor enabled to configure the user agent to monitor a physical downlink control channel (PDCCH) in a subframe to which one of a downlink assignment or an uplink grant is configured, wherein the user agent is configured to use the configured downlink assignment to receive semi-persistent scheduling (SPS) transmissions, and wherein the user agent is configured to receive an SPS transmission even if the downlink assignment does not align in time with an “on duration” of a discontinuous reception (DRX) cycle.
8. The user agent of claim 7 , wherein the processor is further enabled to configure the user agent to start or restart an “on duration” timer when at least a starting condition is satisfied.
9. The user agent of claim 8 , wherein the user agent is configured to start or restart the “on duration” timer when the starting condition is satisfied and when a discontinuous reception (DRX) start adjust procedure activation signal is received.
10. A method implemented in a user agent, the method comprising:
monitoring a physical downlink control channel (PDCCH) in a subframe to which one of a downlink assignment or an uplink grant is configured;
using the configured downlink assignment to receive semi-persistent scheduling (SPS) transmissions; and
receiving an SPS transmission even if the downlink assignment does not align in time with an “on duration” of a discontinuous reception (DRX) cycle.
11. The method of claim 10 , further comprising:
starting or restarting an “on duration” timer when at least a starting condition is satisfied.
12. The method of claim 11 , further comprising:
starting or restarting the “on duration” timer when the starting condition is satisfied and when a discontinuous reception (DRX) start adjust procedure activation signal is received.