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US 12,712,673 B2Granted
Communication method, access network device, terminal device, and core network device
AssigneeHuawei Technologies Co., Ltd.
InventorsBin Xu, Bingzhao Li
Life of this patent
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Abstract
A communication method, an access network device, a terminal device, and a core network device where the terminal device is handed over from a first access network device to a second access network device, the second access network device learns of first service progress of the first access network device based on a first sequence number of a data packet forwarded by the first access network device, without introducing additional progress exchange information between the two access network devices.
Claims20
A communication method comprising:
- receiving a first data packet and first core network sequence number, wherein the first core network sequence number is set by a core network device, the first core network sequence number indicates a sequence of the first data packet in at least one data packet;
- determining a first sequence number of a first protocol layer of the first data packet based on the first core network sequence number, wherein the first sequence number of the first protocol layer of the first data packet is equal to a value of the first core network sequence number;
- sending the first data packet to a terminal device;
- and
- sending a handover command to the terminal device, wherein the handover command indicates the terminal device to handover from a first network device to a second network device.
2 more elements
A communications apparatus, comprising:
- one or more processors in communications with a non-transitory memory configured to store program instructions;
- wherein, when executed by the one or more processors, the instructions cause the one or more processors to:
- receive a first data packet and first core network sequence number, wherein the first core network sequence number is set by a core network device, the first core network sequence number indicates a sequence of the first data packet in at least one data packet;
- determine a first sequence number of a first protocol layer of the first data packet based on the first core network sequence number, wherein the first sequence number of the first protocol layer of the first data packet is equal to a value of the first core network sequence number;
- and
- send the first data packet to a terminal device;
- and
- send a handover command to the terminal device, wherein the handover command indicates the terminal device to handover from a first network device to a second network device.
5 more elements
A communication method comprising:
- receiving at least one data packet;
- sending a first data packet and first core network sequence number to a first access network device, wherein the first core network sequence number indicates a sequence of the first data packet in the at least one data packet, wherein the first core network sequence number is for determining a first sequence number of a first protocol layer of the first data packet, and the first sequence number of the first protocol layer of the first data packet is determined equal to a value of the first core network sequence number.
A communications apparatus, comprising:
- one or more processors in communications with a non-transitory memory configured to store program instructions;
- wherein, when executed by the one or more processors, the instructions cause the one or more processors to:
- receive at least one data packet;
- send a first data packet and first core network sequence number to a first access network device, wherein the first core network sequence number indicates a sequence of the first data packet in the at least one data packet, wherein the first core network sequence number is for determining a first sequence number of a first protocol layer of the first data packet, and the first sequence number of the first protocol layer of the first data packet is determined equal to a value of the first core network sequence number.
1 more element
Dependencies are inferred from the claim text.