Cell handover method and device
First Claim
1. A cell handover method, comprising:
- sending, by a source eNB, a handover request to a target eNB, wherein the handover request comprises a context of a current serving small node and a context of user equipment (UE);
receiving, by the source eNB, a handover request acknowledgment sent by the target eNB, wherein the handover request acknowledgment comprises radio resource control (RRC) reconfiguration information of the UE and offloading configuration information of the current serving small node;
sending, by the source eNB, the offloading configuration information of the current serving small node to the current serving small node to maintain transmission of user plane data in the current serving small node; and
sending, by the source eNB, the RRC reconfiguration information of the UE to the UE.
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Abstract
Embodiments of the present invention provide a cell handover method and a device. so that the target eNB uses a current serving small node as a user plane serving node after UE is handed over and uses the target eNB as a control plane serving node after the UE is handed over; receiving a handover request acknowledgment sent by the target eNB; and sending offloading configuration information of the current serving small node to the current serving small node, and sending RRC reconfiguration information of the UE to the UE, so that offloading configuration is performed separately by the current serving small node and the UE. This avoids a problem that in a cell handover process, a transmission resource required for transmission increases and a delay is relatively great because the current serving small node forwards a large amount of data to the target eNB.
21 Citations
12 Claims
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1. A cell handover method, comprising:
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sending, by a source eNB, a handover request to a target eNB, wherein the handover request comprises a context of a current serving small node and a context of user equipment (UE); receiving, by the source eNB, a handover request acknowledgment sent by the target eNB, wherein the handover request acknowledgment comprises radio resource control (RRC) reconfiguration information of the UE and offloading configuration information of the current serving small node; sending, by the source eNB, the offloading configuration information of the current serving small node to the current serving small node to maintain transmission of user plane data in the current serving small node; and sending, by the source eNB, the RRC reconfiguration information of the UE to the UE. - View Dependent Claims (2, 3, 4)
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5. A cell handover method, comprising:
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receiving, by a target eNB, a handover request sent by a source eNB, wherein the handover request comprises a context of a current serving small node and a context of user equipment (UE); generating, by the target eNB, radio resource control (RRC) reconfiguration information of the UE and offloading configuration information of the current serving small node to maintain transmission of user plane data in the current serving small node; and sending, by the target eNB, to the source eNB, a handover request acknowledgment that carries the RRC reconfiguration information of the UE and the offloading configuration information of the current serving small node. - View Dependent Claims (6, 7)
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8. An eNB, comprising:
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a transmitter, configured to send a handover request to a target eNB, wherein the handover request comprises a context of a current serving small node and a context of user equipment (UE); and a receiver, configured to receive a handover request acknowledgment sent by the target eNB, wherein the handover request acknowledgment comprises radio resource control (RRC) reconfiguration information of the UE and offloading configuration information of the current serving small node;
whereinthe transmitter is further configured to;
send the offloading configuration information of the current serving small node to the current serving small node to maintain transmission of user plane data in the current serving small node, and send the RRC reconfiguration information of the UE to the UE. - View Dependent Claims (9, 10)
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11. An eNB, comprising:
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a receiver, configured to receive a handover request sent by a source eNB, wherein the handover request comprises a context of a current serving small node and a context of user equipment (UE); a processor, configured to;
generate radio resource control (RRC) reconfiguration information of the UE and offloading configuration information of the current serving small node to maintain transmission of user plane data in the current serving small node; anda transmitter, configured to send, to the source eNB, a handover request acknowledgment that carries the RRC reconfiguration information of the UE and the offloading configuration information of the current serving small node. - View Dependent Claims (12)
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Specification