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US 11,240,712 B2Granted
Data migration method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorWen Xiong
Life of this patent
Estimating the term…
Abstract
A data migration method is disclosed. The method includes: performing, by a source base station, a TCP proxy for user equipment; learning, by the source base station, that the user equipment is to be handed over to a target base station; sending, by the source base station to the target base station, context information including a sequence number of a data packet, and the sequence number of the data packet is a largest sequence number of data packets that have been acknowledged by the user equipment or a smallest sequence number of data packets that have not been acknowledged by the user equipment; and migrating, by the source base station by using the SCTP, the data packets that have not been acknowledged by the user equipment to the target base station.
Claims12
A data migration method, comprising:
- performing, by a source base station, a transmission control protocol (TCP) proxy for user equipment;
- learning, by the source base station, that the user equipment is to be handed over to a target base station;
- sending, by the source base station, context information to the target base station, wherein the context information comprises a sequence number of a data packet, and the sequence number of the data packet is a largest sequence number of data packets that have been acknowledged by the user equipment or a smallest sequence number of data packets that have not been acknowledged by the user equipment;
- and
- migrating, by the source base station by using a stream control transmission protocol (SCTP), the data packets that have not been acknowledged by the user equipment to the target base station, so that the target base station receives, based on the sequence number of the data packet, the data packets that have not been acknowledged by the user equipment, including
- encapsulating, by the source base station by using an X2 interface application protocol and the SCTP, the data packets that have not been acknowledged by the user equipment, and
- sending, by the source base station, a handover data message to the target base station, wherein the handover data message comprises the data packets that have not been acknowledged by the user equipment and a message type indication that are encapsulated by the source base station by using the X2 interface application protocol and the SCTP, and the message type indication is used to indicate that the source base station migrates the data packets that have not been acknowledged by the user equipment to the target base station.
4 more elements
A data migration method, comprising:
- receiving, by a target base station, context information from a source base station, wherein the context information comprises a sequence number of a data packet, and the sequence number of the data packet is a largest sequence number of data packets that have been acknowledged by user equipment or a smallest sequence number of data packets that have not been acknowledged by the user equipment;
- and
- receiving, by the target base station, from the source base station based on the sequence number of the data packet, the data packets that have not been acknowledged by the user equipment and that are migrated by using a stream control transmission protocol (SCTP), including:
- receiving, by the target base station, a handover data message from the source base station, wherein the handover data message comprises the data packets that have not been acknowledged by the user equipment and a message type indication, and the message type indication is used to indicate that the target base station receives the data packets that have not been acknowledged by the user equipment from the source base station, and
- decapsulating, by the target base station, the handover data message by using an X2 interface application protocol and the SCTP, to obtain the data packets that have not been acknowledged by the user equipment.
2 more elements
A source base station, comprising:
- a processor, configured to perform a transmission control protocol (TCP) proxy for user equipment, wherein
- the processor is further configured to learn that the user equipment is to be handed over to a target base station;
- and
- encapsulate, by using an X2 interface application protocol and a stream control transmission protocol (SCTP), data packets that have not been acknowledged by the user equipment;
- and
- a transceiver, configured to send context information to the target base station, wherein the context information comprises a sequence number of a data packet, and the sequence number of the data packet is a largest sequence number of data packets that have been acknowledged by the user equipment or a smallest sequence number of data packets that have not been acknowledged by the user equipment, wherein
- the transceiver is further configured to migrate, by using the SCTP, the data packets that have not been acknowledged by the user equipment to the target base station, so that the target base station receives, based on the sequence number of the data packet, the data packets that have not been acknowledged by the user equipment;
- and
- send a handover data message to the target base station, wherein the handover data message comprises the data packets that have not been acknowledged by the user equipment and a message type indication that are encapsulated by the source base station by using the X2 interface application protocol and the SCTP, and the message type indication is used to indicate that the source base station migrates the data packets that have not been acknowledged by the user equipment to the target base station.
6 more elements
Dependencies are inferred from the claim text.