Back to results
US 11,689,972 B2Granted
Handover method, information exchange method, device and computer readable storage medium
AssigneesChina Mobile Communication Co., Ltd Research Institute, China Mobile Communications Group Co., Ltd.
InventorsFang Xie, Zhuo Chen, Liang Liu, Na Li
Life of this patent
Estimating the term…
Abstract
A handover method, information exchange method, device and computer readable storage medium are provided. In some embodiments, a first network device may acquire multi-connectivity capability information of a candidate second network device during a handover process, so that the first network device may select, based on the multi-connectivity capability information, a candidate second network device capable of providing an multi-connectivity service as a second network device.
Claims11
A handover method, comprising:
- transmitting, by a first network device, a handover request message associated with user equipment (UE) to at least one candidate second network device;
- receiving, by the first network device, a handover request acknowledge message transmitted by the at least one candidate second network device, wherein the handover request acknowledge message carries multi-connectivity capability information of the candidate second network device;
- wherein
- the multi-connectivity capability information comprises information of one or more cells capable of performing multi-connectivity with the candidate second network device;
- wherein the multi-connectivity capability information carried in the handover request acknowledge message comprises:
- cell identifiers (IDs) of the cells capable of performing multi-connectivity with the candidate second network device, or,
- a bitmap, wherein bits in the bitmap correspond, in a one-to-one relationship, to cells whose information are carried in the handover request message, and a value of each bit represents whether a corresponding cell is capable of performing multi-connectivity with the candidate second network device;
- wherein, prior to transmitting the handover request message, the method further comprises:
- acquiring, by the first network device, multi-connectivity capability information of another network device and/or transmitting, by the first network device, multi-connectivity capability information of the first network device to another network device when an interface between the first network device and the another network device is being set up or when a configuration of the first network device or the another network device is being updated through an interface between the first network device and the another network device.
6 more elements
A handover method, comprising:
- receiving, by a candidate second network device, a handover request message associated with user equipment (UE) transmitted by a first network device;
- transmitting, by the candidate second network device, a handover request acknowledge message to the first network device, wherein the handover request acknowledge message carries multi-connectivity capability information of the candidate second network device;
- wherein
- the multi-connectivity capability information comprises information of one or more cells capable of performing multi-connectivity with the candidate second network device;
- wherein the multi-connectivity capability information carried in the handover request acknowledge message comprises:
- cell identifiers (IDs) of the cells capable of performing multi-connectivity with the candidate second network device, or,
- a bitmap, wherein bits in the bitmap correspond, in a one-to-one relationship, to cells whose information are carried in the handover request message, and a value of each bit represents whether a corresponding cell is capable of performing multi-connectivity with the candidate second network device;
- wherein, prior to receiving the handover request message, the method further comprises:
- acquiring, by the candidate second network device, multi-connectivity capability information of another network device and/or transmitting, by the candidate second network device, multi-connectivity capability information of the candidate second network device to another network device when an interface between the candidate second network device and the another network device is being set up or when a configuration of the candidate second network device or the another network device is being updated through an interface between the candidate second network device and the another network device.
6 more elements
An information exchange method, comprising:
- acquiring, by a first network device, multi-connectivity capability information of another network device and/or transmitting, by the first network device, multi-connectivity capability information of the first network device to another network device when an interface between the first network device and the another network device is being set up or when a configuration of the first network device or the another network device is being updated through an interface between the first network device and the another network device;
- wherein, in a case of acquiring the multi-connectivity capability information of the another network device, the multi-connectivity capability information comprises cell identifiers (IDs) of one or more cells capable of performing LTE-NR multi-connectivity with the another network device;
- in a case of transmitting the multi-connectivity capability information of the first network device to the another network device, the multi-connectivity capability information comprises cell identifiers (IDs) of one or more cells capable of performing LTE-NR multi-connectivity with the first network device.
A first network device, wherein the first network device maintains multi-connectivity capability information of a second network device locally,
- the multi-connectivity capability information comprises cell identifiers (IDs) of one or more cells capable of performing LTE-NR multi-connectivity with the second network device;
- wherein the first network device acquires multi-connectivity capability information of the second network device from respective handover request acknowledge (ACK) messages returned by the second network device, or acquires multi-connectivity capability information when an interface between the first network device and the second network device is being set up or when a configuration of the first network device or the second network device is being updated through an interface between the first network device and the second network device.
Dependencies are inferred from the claim text.