Data transmission using bandwidth parts
A method includes: detecting a need for a retransmission of a data transmission on one or more bandwidth parts (BWP) between a user apparatus and a radio access network; and in response to detecting the need for the retransmission, resetting a timer, wherein an expiration of the timer causes automatic switching from using the one or more BWPs for the data transmission to using a default BWP for the data transmission.
1. An apparatus comprising:
processing circuitry; and
memory circuitry including computer program code, where the memory circuitry and the computer program code configured to, with the processing circuitry, cause the apparatus to:
detect a need for a retransmission of a data transmission on one or more bandwidth parts (BWP) between a user apparatus and a radio access network in response to triggering a hybrid automatic repeat request negative acknowledgement (HARQ-NACK) indications to the radio access network; and
in response to detecting the need for the retransmission, reset a BWP-HARQ inactivity timer to a time value that is larger than the following: a maximum number of consecutive new radio units until a downlink retransmission is received multiplied by a minimum amount of new radio units before a downlink assignment for HARQ retransmission is expected by a media access control entity, wherein an expiration of the timer is configured to cause automatic switching from using the one or more bandwidth parts for the data transmission to using a default bandwidth part for the data transmission.
2. The apparatus of claim 1 , wherein the new radio units refer to a scheduling time unit.
3. The apparatus of claim 1 , wherein the data transmission is sent or received.
4. The apparatus of claim 1 , wherein the user apparatus is portable computing device that includes wireless mobile communication devices.
5. The apparatus of claim 1 , wherein the BWP-HARQ inactivity timer is a new BWP-HARQ inactivity timer.
6. The apparatus of claim 1 , wherein the one or more bandwidth parts is one or more active bandwidth parts of a component carrier allocated during a connected mode for the user apparatus.
7. The apparatus of claim 1 , wherein the default bandwidth part is an initial active bandwidth part allocated during an initial access with the user apparatus.
8. The apparatus of claim 1 , wherein the apparatus is the user apparatus.
9. A method comprising:
detecting a need for a retransmission of a data transmission on one or more bandwidth parts BWP between a user apparatus and a radio access network in response to triggering a hybrid automatic repeat request negative acknowledgement (HARQ-NACK) indications to the radio access network; and
in response to detecting the need for the retransmission, resetting a BWP-HARQ inactivity timer to a time value that is larger than the following: a maximum number of consecutive new radio units until a downlink retransmission is received multiplied by a minimum amount of new radio units before a downlink assignment for HARQ retransmission is expected by a media access control entity, wherein an expiration of the timer causes automatic switching from using the one or more bandwidth parts for the data transmission to using a default bandwidth part for the data transmission.
10. The method of claim 9 , wherein the new radio units refer to a scheduling time unit.
11. The method of claim 9 , wherein the user apparatus is portable computing device that includes wireless mobile communication devices.
12. The method of claim 9 , wherein the data transmission is sent or received.
13. The method of claim 9 , wherein the BWP-HARQ inactivity timer is a new BWP-HARQ inactivity timer.
14. The method of claim 9 , wherein the one or more bandwidth parts is one or more active bandwidth parts of a component carrier allocated during a connected mode for the user apparatus.
15. The method of claim 9 , wherein the default bandwidth part is an initial active bandwidth part allocated during an initial access with the user apparatus.
16. A non-transitory computer-readable medium comprising computer program code, which, when loaded into one or more processors and executed by the one or more processors, causes an apparatus to perform a method comprising:
detecting a need for a retransmission of a data transmission on one or more bandwidth parts BWP between a user apparatus and a radio access network in response to triggering a hybrid automatic repeat request negative acknowledgement (HARQ-NACK) indications to the radio access network; and
in response to detecting the need for the retransmission, resetting a BWP-HARQ inactivity timer to a time value that is larger than the following: a maximum number of consecutive new radio units until a downlink retransmission is received multiplied by a minimum amount of new radio units before a downlink assignment for HARQ retransmission is expected by a media access control entity, wherein an expiration of the timer causes automatic switching from using the one or more bandwidth parts for the data transmission to using a default bandwidth part for the data transmission.
17. The non-transitory computer-readable medium of claim 16 , wherein the new radio units refer to a scheduling time unit.
18. The non-transitory computer-readable medium of claim 16 , wherein the user apparatus is portable computing device that includes wireless mobile communication devices.
19. The non-transitory computer-readable medium of claim 16 , wherein the data transmission is sent or received.
20. The non-transitory computer-readable medium of claim 16 , wherein the BWP-HARQ inactivity timer is a new BWP-HARQ inactivity timer.