US 9,813,946 B2
Direct handover method and device
Wanqiang Zhang, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Apr. 30, 2015, as Appl. No. 14/700,885.
Application 14/700,885 is a continuation of application No. PCT/CN2013/086357, filed on Oct. 31, 2013.
Claims priority of application No. 2012 1 0426023 (CN), filed on Oct. 31, 2012.
Prior Publication US 2015/0237532 A1, Aug. 20, 2015
Int. Cl. H04W 36/00 (2009.01)
CPC H04W 36/0005 (2013.01) [H04W 36/0033 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A direct handover method, comprising:
receiving, by a target-side access network node, a handover message from a source-side access network node;
selecting, by the target-side access network node, a target-side core network node, and transmitting the handover message to the target-side core network node to facilitate handover from the source-side access network node and a source-side core network node to the target-side access network node and the target-side core network node, wherein the handover includes the target-side core network node acquiring context information of a User Equipment (UE) from the source-side core network node; and
receiving, by the target-side access network node, a handover acknowledgement message from the target-side core network node;
wherein the handover acknowledgement message is sent by the target-side core network node to the source-side core network node to facilitate the source-side core network node initiating a resource release with the source-side access network node in response to the handover acknowledgement message, and wherein the handover acknowledgement message is sent by the target-side core network node to the target-side access network node after the handover acknowledgement message is sent by the target-side core network node to the source-side core network node.