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US 11,540,183 B2Granted
Consecutive conditional handovers
AssigneeApple Inc.
InventorsFangli Xu, Haijing Hu, Yuqin Chen, Ehsan Haghani, Dawei Zhang
Life of this patent
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Abstract
This disclosure relates to techniques for performing consecutive conditional handovers. A cellular base station may provide conditional handover information for multiple conditional handovers to a wireless device. The conditional handover information may include information for performing a conditional handover from a cell provided by the cellular base station to at least one cell, and information for performing a conditional handover from one or more of those cells to at least one cell. The wireless device may perform multiple consecutive conditional handovers using the conditional handover information.
Claims19
An apparatus, comprising:
- a processor configured to cause a wireless device to:
- provide capability information to a first cellular base station, wherein the capability information indicates that the wireless device supports configuration of consecutive conditional handovers;
- receive conditional handover information from the first cellular base station, wherein the conditional handover information includes information to support performing consecutive conditional handovers and explicitly indicates to keep the conditional handover information after handover completion;
- perform a first conditional handover using the conditional handover information received from the first cellular base station;
- and
- retain the conditional handover information received from the first cellular base station after the first conditional handover.
3 more elements
A wireless device, comprising:
- an antenna;
- a radio operably coupled to the antenna;
- and
- a processor operably coupled to the radio;
- wherein the wireless device configured to:
- provide capability information to a cellular base station, wherein the capability information indicates that the wireless device supports configuration of consecutive conditional handovers;
- receive conditional handover information from the cellular base station while the wireless device is connected to a first cell provided by the cellular base station, wherein the conditional handover information explicitly indicates to keep the conditional handover information after handover completion and includes information for performing conditional handover from the first cell to at least a second cell and information for performing conditional handover from the second cell to at least a third cell;
- perform conditional handover from the first cell to the second cell using the conditional handover information, wherein after the conditional handover from the first cell to the second cell the wireless device is connected to the second cell;
- and
- perform conditional handover from the second cell to the third cell using the conditional handover information, wherein after the conditional handover from the second cell to the third cell the wireless device is connected to the third cell.
7 more elements
A first cellular base station, comprising:
- an antenna;
- a radio operably coupled to the antenna;
- and
- a processor operably coupled to the radio;
- wherein the first cellular base station is configured to:
- provide a first cell;
- provide a conditional handover request to a second cellular base station that is configured to provide a second cell;
- receive a response to the conditional handover request from the second cellular base station, wherein the response includes first information for performing conditional handover from the second cell to at least a third cell;
- receive capability information from the wireless device, wherein the capability information indicates that the wireless device supports configuration of consecutive conditional handovers;
- and
- provide, via the first cell, second conditional handover information to a wireless device, wherein the second conditional handover information explicitly indicates to keep the second conditional handover information after handover completion and includes a first portion of information for performing conditional handover from the first cell to at least the second cell and a second portion of information for performing the conditional handover from the second cell to at least the third cell.
8 more elements
Dependencies are inferred from the claim text.