New patent application published for: METHOD AND APPARATUS FOR AUTONOMOUS SERVING CELL SWITCHING IN A WIRELESS COMMUNICATION SYSTEM

METHOD AND APPARATUS FOR AUTONOMOUS SERVING CELL SWITCHING IN A WIRELESS COMMUNICATION SYSTEM

Claims

1-32. (canceled)
33. A method, comprising: configuring, by a wireless device, a connection with a serving cell; receiving, by the wireless device, a configuration for one or more candidate serving cells; acquiring, by the wireless device, an uplink transmission timing for at least one candidate serving cell among the one or more candidate serving cells; detecting, by the wireless device, a failure related to the serving cell; selecting, by the wireless device, a specific candidate serving cell among the at least one candidate serving cell for which the uplink transmission timing is acquired; and performing, by the wireless device, a serving cell switching from the serving cell to the specific candidate serving cell based on the configuration for the specific candidate serving cell.
34. The method of claim 33, wherein the specific candidate serving cell is selected based on the uplink transmission timing for the specific candidate serving cell being valid.
35. The method of claim 33, wherein the method further comprising, starting, by the wireless device, a timer upon acquiring the uplink transmission timing for the specific candidate serving cell.
36. The method of claim 35, wherein the method further comprising, considering, by the wireless device, the uplink transmission timing for the specific candidate serving cell is valid while the timer running.
37. The method of claim 33, wherein the method further comprising, performing, by the wireless device, radio link monitoring and/or beam failure detection for the serving cell.
38. The method of claim 33, wherein the method further comprising, performing, by the wireless device, uplink transmission to the specific candidate serving cell without a Random Access procedure.
39. The method of claim 33, wherein the serving cell is a Primary Cell (PCell), a Primary Secondary Cell Group (SCG) Cell (PSCell), or a Secondary Cell (SCell).
40. The method of claim 33, wherein the method further comprises, receiving, by the wireless device, a configuration of the serving cell.
41. The method of claim 33, wherein the failure related to the serving cell includes a beam failure, a radio link failure, a handover failure, and/or a compliance failure.
42. The method of claim 33, wherein the failure related to the serving cell is detected by a Medium Access Control (MAC) layer of the wireless device.
43. The method of claim 42, wherein the method further comprises, informing, by the MAC layer of the wireless device, a radio resource control (RRC) layer of the wireless device of information on the specific candidate serving cell, based on that the MAC layer knows the uplink transmission timing for the specific candidate serving cell.
44. The method of claim 33, wherein the uplink transmission timing for the at least one candidate serving cell is acquired by performing a Random Access procedure with the at least one candidate serving cell.
45. The method of claim 33, wherein the uplink transmission timing for the at least one candidate serving cell is acquired by calculating the uplink transmission timing based on information received from a network.
46. The method of claim 33, wherein the wireless device is in communication with at least one of a user equipment, a network, or an autonomous vehicle other than the wireless device.
47. A wireless device, comprising: a transceiver; a memory; and at least one processor operatively coupled to the transceiver and the memory, and adapted to: configure a connection with a serving cell; receive a configuration for one or more candidate serving cells; acquire an uplink transmission timing for at least one candidate serving cell among the one or more candidate serving cells; detect a failure related to the serving cell; select a specific candidate serving cell among the at least one candidate serving cell for which the uplink transmission timing is acquired; and perform a serving cell switching from the serving cell to the specific candidate serving cell based on the configuration for the specific candidate serving cell.
48. The wireless device of claim 47, wherein the specific candidate serving cell is selected based on the uplink transmission timing for the specific candidate serving cell being valid.
49. The wireless device of claim 47, wherein the at least one processor is further adapted to, start a timer upon acquiring the uplink transmission timing for the specific candidate serving cell.
50. The wireless device of claim 49, wherein the at least one processor is further adapted to, consider the uplink transmission timing for the specific candidate serving cell is valid while the timer running.
51. The wireless device of claim 47, wherein the at least one processor is further adapted to, perform radio link monitoring and/or beam failure detection for the serving cell.
52. A base station, comprising: a transceiver; a memory; and a processor operatively coupled to the transceiver and the memory, and adapted to: transmit, to a wireless device, a configuration of a serving cell; transmit, to the wireless device, a preconfiguration for one or more candidate serving cells; transmit, to the wireless device, information on uplink transmission timing for at least one candidate serving cell among the one or more candidate serving cells; receive, to the wireless device, uplink data via the serving cell; and receive, to the wireless device, uplink data via a specific candidate cell among one or more candidate serving cells without a Random Access procedure.