Low latency schedule-driven handovers
Systems, methods, and non-transitory media are provided for low latency handovers. An example method can include receiving, by a user terminal associated with a cell served by a satellite, a schedule of communications between the user terminal and one or more satellites, wherein the one or more satellites comprises the satellite and a different satellite, and wherein the schedule of communications is obtained by the user terminal from the satellite; requesting, based on the schedule, a handover from a beam of the satellite to a different beam of one of the satellite or the different satellite; performing the handover from the beam of the satellite to the different beam of the one of the satellite or the different satellite; and after the handover, transmitting, by the user terminal, one or more packets via the different beam of the one of the satellite or the different satellite.
1. A method comprising:
receiving, by a user terminal associated with a cell served by a satellite, a schedule of communications between the user terminal and one or more satellites, wherein the one or more satellites comprises the satellite and a different satellite, and wherein the schedule of communications is obtained by the user terminal from the satellite;
requesting, based on the schedule, a handover from a beam of the satellite to a different beam of one of the satellite or the different satellite;
performing the handover from the beam of the satellite to the different beam of the one of the satellite or the different satellite, wherein performing the handover comprises:
disabling, at a layer 2 (L2) of the user terminal, receive (Rx) and/or transmit (Tx) communications associated with the user terminal, disabling, at a layer 1 (L1) of the user terminal, one or more Rx or Tx interfaces used for communications associated with the beam of the satellite, and terminating a data transmission link comprising the user terminal and the beam of the satellite; and
after the handover, transmitting, by the user terminal, one or more packets via the different beam of the one of the satellite or the different satellite.
2. The method of claim 1 , wherein performing the handover from the beam of the satellite to the different beam of the one of the satellite or the different satellite comprises breaking a connection with the beam of the satellite and making a connection with the different beam of the one of the satellite or the different satellite.
3. The method of claim 2 , wherein making the connection with the different beam of the one of the satellite or the different satellite comprises receiving, from the satellite or the different satellite, a handover request.
4. The method of claim 1 , wherein performing the handover comprises:
enabling, at the L2 of the user terminal, Rx or Tx communications associated with the user terminal and the different beam of the one of the satellite or the different satellite;
configuring, at the L1 of the user terminal, one or more Rx or Tx interfaces for communications between the user terminal and the different beam associated with the one of the satellite or the different satellite; and
establishing a different data transmission link comprising the user terminal and the different beam associated with the one of the satellite or the different satellite.
5. The method of claim 4 , wherein performing the handover comprises:
disabling, at the user terminal, a beam pointing service associated with at least one of Rx and Tx beams; and
after terminating the data transmission link comprising the user terminal and the beam of the satellite, enabling the beam pointing service for the different beam associated with the one of the satellite or the different satellite.
6. The method of claim 1 , wherein the schedule comprises a handover period for the handover from the beam of the satellite to the different beam of one of the satellite or the different satellite.
7. The method of claim 6 , wherein requesting the handover from the beam of the satellite to the different beam of one of the satellite or the different satellite is initiated relative to the handover period.
8. At least one non-transitory computer-readable storage medium comprising instructions stored thereon which, when executed by one or more processors, cause the one or more processors to:
receive, by a user terminal associated with a cell served by a satellite, a schedule of communications between the user terminal and one or more satellites, wherein the one or more satellites comprises the satellite and a different satellite, and wherein the schedule of communications is obtained by the user terminal from the satellite;
request, based on the schedule, a handover from a beam of the satellite to a different beam of one of the satellite or the different satellite;
perform the handover from the beam of the satellite to the different beam of the one of the satellite or the different satellite, wherein performing the handover comprises disabling, at a layer 2 (L2) of the user terminal, receive (Rx) or transmit (Tx) communications associated with the user terminal, disabling, at a layer 1 (L1) of the user terminal, one or more Rx or Tx interfaces used for communications associated with the beam of the satellite, and terminating a data transmission link comprising the user terminal and the beam of the satellite; and
after the handover, transmit, by the user terminal, one or more packets via the different beam of the one of the satellite or the different satellite.
9. The at least one non-transitory computer-readable storage medium of claim 8 , wherein performing the handover from the beam of the satellite to the different beam of the one of the satellite or the different satellite comprises breaking a connection with the beam of the satellite and making a connection with the different beam of the one of the satellite or the different satellite.
10. The at least one non-transitory computer-readable storage medium of claim 9 , wherein making the connection with the different beam of the one of the satellite or the different satellite comprises receiving, from the satellite or the different satellite, a handover request.
11. The at least one non-transitory computer-readable storage medium of claim 8 , wherein performing the handover comprises:
enabling, at the L2 of the user terminal, Rx or Tx communications associated with the user terminal and the different beam of the one of the satellite or the different satellite;
configuring, at the L1 of the user terminal, one or more Rx or Tx interfaces for communications between the user terminal and the different beam associated with the one of the satellite or the different satellite; and
establishing a different data transmission link comprising the user terminal and the different beam associated with the one of the satellite or the different satellite.
12. The at least one non-transitory computer-readable storage medium of claim 8 , wherein the schedule comprises a handover period for the handover from the beam of the satellite to the different beam of one of the satellite or the different satellite, and wherein requesting the handover from the beam of the satellite to the different beam of one of the satellite or the different satellite is initiated relative to the handover period.
13. A user terminal comprising:
one or more processors; and
at least one non-transitory computer-readable medium having stored thereon instructions that, when executed by the one or more processors, cause the one or more processors to:
receive a schedule of communications between the user terminal and one or more satellites, wherein the one or more satellites comprises a satellite and a different satellite, and wherein the schedule of communications is obtained by the user terminal from the satellite;
request, based on the schedule, a handover from a beam of the satellite serving a cell associated with the user terminal to a different beam of one of the satellite or the different satellite;
perform the handover from the beam of the satellite to the different beam of the one of the satellite or the different satellite, wherein performing the handover comprises disabling, at a layer 2 (L2) of the user terminal, receive (Rx) or transmit (Tx) communications associated with the user terminal, disabling, at a layer 1 (L1) of the user terminal, one or more Rx or Tx interfaces used for communications associated with the beam of the satellite, and terminating a data transmission link comprising the user terminal and the beam of the satellite; and
after the handover, transmit one or more packets via the different beam of the one of the satellite or the different satellite.
14. The user terminal of claim 13 , wherein performing the handover from the beam of the satellite to the different beam of the one of the satellite or the different satellite comprises breaking a connection with the beam of the satellite and making a connection with the different beam of the one of the satellite or the different satellite.
15. The user terminal of claim 14 , wherein making the connection with the different beam of the one of the satellite or the different satellite comprises receiving, from the satellite or the different satellite, a handover request.
16. The user terminal of claim 13 , wherein performing the handover comprises:
enabling, at the L2 of the user terminal, Rx or Tx communications associated with the user terminal and the different beam of the one of the satellite or the different satellite;
configuring, at the L1 of the user terminal, one or more Rx or Tx interfaces for communications between the user terminal and the different beam associated with the one of the satellite or the different satellite; and
establishing a different data transmission link comprising the user terminal and the different beam associated with the one of the satellite or the different satellite.
17. The user terminal of claim 13 , wherein the schedule comprises a handover period for the handover from the beam of the satellite to the different beam of one of the satellite or the different satellite.
18. The user terminal of claim 17 , wherein requesting the handover from the beam of the satellite to the different beam of one of the satellite or the different satellite is initiated relative to the handover period.