Bandwidth part specific scheduling configuration
Methods, apparatus, and systems for reducing signaling overhead in a primary while supporting fast activation of one or more secondary cells are described. In one example aspect, a wireless communication method includes receiving, by a mobile device, a signaling message from a base station for configuring a primary cell and at least one secondary cell. The secondary cell is configured with at least one bandwidth part and the signaling message includes a first information element associated with the bandwidth part. The first information element further includes a second information element for enabling or disabling cross-carrier scheduling for the bandwidth part. The method also includes performing, by the mobile device, blind decoding to obtain scheduling information with respect to the bandwidth part based on whether the cross-carrier scheduling for the bandwidth part is enabled or disabled.
1. A wireless communication method, comprising:
receiving, by a mobile device, a signaling message from a base station for configuring a primary cell and a secondary cell, wherein the secondary cell is configured with a bandwidth part and the signaling message includes a first information element including an identifier for the bandwidth part, the first information element further including a second information element for enabling or disabling cross-carrier scheduling for the bandwidth part causing the bandwidth part of the secondary cell to be scheduled by a scheduling cell or the secondary cell; and
performing, by the mobile device, blind decoding in the scheduling cell or the secondary cell to obtain scheduling information with respect to the bandwidth part from the scheduling cell in case that the cross-carrier scheduling is enabled and to obtain the scheduling information from the secondary cell in case that the cross-carrier scheduling is disabled.
2. The method of claim 1 , further comprising:
receiving, by the mobile device, a Downlink Control Information (DCI) message from the base station triggering an aperiodic Channel State Information measurement and reporting; and
performing, by the mobile device, the aperiodic Channel State Information measuring and reporting for the bandwidth part.
3. The method of claim 1 , further comprising:
receiving, by the mobile device, a second message from the base station triggering a semi-persistent Channel State Information measurement and reporting, wherein the second message is a Medium Access Control (MAC) message or a Downlink Control Information (DCI) message; and
performing, by the mobile device, the semi-persist Channel State Information measuring and reporting for the bandwidth part.
4. The method of claim 1 , wherein the signaling message includes a third information element for enabling or disabling cross-carrier scheduling for the secondary cell.
5. The method of claim 1 , wherein the first information element associated with the bandwidth part includes at least one of 1) a dormant bandwidth part information element, 2) a bandwidth part downlink information element, 3) a bandwidth part uplink information element, 4) a bandwidth part downlink dedicated information element, 5) a bandwidth part uplink dedicated information element, 6) a Physical Downlink Control Channel config information element, 7) a Physical Downlink Shared Channel config information element, or 8) a Physical Uplink Shared Channel config information element.
6. The method of claim 1 , wherein the cross-carrier scheduling is enabled by default for the bandwidth part.
7. The method of claim 1 , wherein the first information element indicates a scheduling cell that is configured to signal scheduling information with respect to the bandwidth part to the mobile station.
8. A wireless communication method, comprising:
transmitting, from a base station to a mobile device, a signaling message for configuring a primary cell and a secondary cell, wherein the secondary cell is configured with a bandwidth part and the signaling message includes a first information element including an identifier for the bandwidth part, the first information element further including a second information element for enabling or disabling cross-carrier scheduling for the bandwidth part causing the mobile device to perform blind decoding in a scheduling cell or the secondary cell such that scheduling information with respect to the bandwidth part is obtained from the scheduling cell in case that the cross-carrier scheduling is enabled and obtained from the secondary cell in case that the cross-carrier scheduling is disabled.
9. The method of claim 8 , further comprising:
transmitting, by the base station, a Downlink Control Information (DCI) message to the mobile device triggering an aperiodic Channel State Information measurement and reporting, or transmitting, by the base station, a second message to the mobile device triggering a semi-persistent Channel State Information measurement and reporting, wherein the second message is a Medium Access Control (MAC) message or a Downlink Control Information (DCI) message.
10. The method of claim 8 , wherein the signaling message includes a third information element for enabling or disabling cross-carrier scheduling for the secondary cell.
11. The method of claim 8 , wherein the first information element associated with the bandwidth part includes 1) a dormant bandwidth part information element, 2) a bandwidth part downlink information element, 3) a bandwidth part uplink information element, 4) a bandwidth part downlink dedicated information element, 5) a bandwidth part uplink dedicated information element, 6) a Physical Downlink Control Channel config information element, 7) a Physical Downlink Shared Channel config information element, or 8) a Physical Uplink Shared Channel config information element.
12. The method of claim 8 , wherein the cross-carrier scheduling is enabled by default for the bandwidth part.
13. The method of claim 8 , wherein the first information element indicates a scheduling cell that is configured to signal scheduling information with respect to the bandwidth part to the mobile device.
14. The method of claim 13 , wherein the scheduling cell includes the primary cell, the secondary cell, or a different secondary cell.
15. A communication device comprising a processor and a memory, wherein the processor is configured to:
receive a signaling message from a base station for configuring a primary cell and a secondary cell, wherein the secondary cell is configured with a bandwidth part and the signaling message includes a first information element including an identifier for the bandwidth part, the first information element further including a second information element for enabling or disabling cross-carrier scheduling for the bandwidth part causing the bandwidth part of the secondary cell to be scheduled by a scheduling cell or the secondary cell; and
perform blind decoding in the scheduling cell or the secondary cell to obtain scheduling information with respect to the bandwidth part from the scheduling cell in case that the cross-carrier scheduling is enabled and to obtain the scheduling information from the secondary cell in case that the cross-carrier scheduling is disabled.
16. The communication device of claim 15 , wherein the processor is further configured to:
receive a Downlink Control Information (DCI) message from the base station triggering an aperiodic Channel State Information measurement and reporting; and
perform the aperiodic Channel State Information measuring and reporting for the bandwidth part.
17. The communication device of claim 15 , wherein the processor is further configured to:
receive a second message from the base station triggering a semi-persistent Channel State Information measurement and reporting, wherein the second message is a Medium Access Control (MAC) message or a Downlink Control Information (DCI) message; and
perform the semi-persist Channel State Information measuring and reporting for the bandwidth part.
18. The communication device of claim 15 , wherein the first information element associated with the bandwidth part includes at least one of 1) a dormant bandwidth part information element, 2) a bandwidth part downlink information element, 3) a bandwidth part uplink information element, 4) a bandwidth part downlink dedicated information element, 5) a bandwidth part uplink dedicated information element, 6) a Physical Downlink Control Channel config information element, 7) a Physical Downlink Shared Channel config information element, or 8) a Physical Uplink Shared Channel config information element.