Cell handover method, network node and terminal device

Abstract

Provided are a cell handover method, a network node and a terminal device. The method includes that: a target node sends a first resource to a terminal device, the first resource being used for sending or receiving data after the terminal device is handed over to the target node. In implementation of the disclosure, the first resource is carried in a handover command or a handover acknowledgement, the terminal device can directly send or receive data on the first resource after the terminal device is handed over to the target node, thereby reducing a delay and improving user experience.

1 . A handover method, comprising:
 receiving, by a terminal device, a first resource and a second resource configured by a target node; and   sending, by the terminal device, uplink data via the first resource and a handover response via the second resource directly to the target node in response to that the terminal device is handed over to the target node.   
     
     
         2 . The handover method of  claim 1 , wherein receiving, by the terminal device, the first resource and the second resource configured by the target node comprises:
 receiving, by the terminal device, the first resource and the second resource configured by the target node before the terminal device is handed over to the target node.   
     
     
         3 . The handover method of  claim 1 , wherein receiving, by the terminal device, the first resource comprises:
 receiving, by the terminal device, the first resource from the target node via a handover command; or   receiving, by the terminal device, the first resource from the target node via a reconfiguration command or physical layer control signaling;   wherein the handover command is forwarded by the target node through a source node; the reconfiguration command or the physical layer control signaling is generated by the source node according to a handover acknowledgement (ACK) of the target node.   
     
     
         4 . The handover method of  claim 1 , wherein the second resource is sent by the target node while sending the first resource. 
     
     
         5 . The handover method of  claim 1 , wherein the handover response is a radio resource control connection reconfiguration complete message. 
     
     
         6 . The handover method of  claim 1 , wherein the first resource is an uplink resource predetermined by the terminal device and a network device, or pre-configured by a network. 
     
     
         7 . A terminal device, comprising:
 a transceiver, and   a processor configured to trigger the transceiver to send and receive information;   wherein the transceiver is configured to:   receive a first resource and a second resource configured by a target node; and   send uplink data via the first resource and a handover response via the second resource directly to the target node in response to that the terminal device is handed over to the target node.   
     
     
         8 . The terminal device of  claim 7 , wherein when receiving the first resource and the second resource configured by the target node, the transceiver is specifically configured to:
 receive the first resource and the second resource configured by the target node before the terminal device is handed over to the target node.   
     
     
         9 . The terminal device of  claim 7 , wherein the second resource is sent by the target node while sending the first resource. 
     
     
         10 . The terminal device of  claim 7 , wherein the transceiver is configured to:
 receive the first resource from the target node via a handover command; or   receive the first resource from the target node via a reconfiguration command or physical layer control signaling;   wherein the handover command is forwarded by the target node through a source node; the reconfiguration command or the physical layer control signaling is generated by the source node according to a handover acknowledgement (ACK) of the target node.   
     
     
         11 . The terminal device of  claim 7 , wherein the handover response is a radio resource control connection reconfiguration complete message. 
     
     
         12 . The terminal device of  claim 7 , wherein the first resource is an uplink resource predetermined by the terminal device and a network device, or pre-configured by a network. 
     
     
         13 . A target node, comprising:
 a transceiver, and   a processor configured to trigger the transceiver to send and receive information;   wherein the transceiver is configured to:   send a first resource and a second resource configured by the target node to a terminal device; and   receive uplink data via the first resource and a handover response via the second resource directly from the terminal device in response to that the terminal device is handed over to the target node.   
     
     
         14 . The target node of  claim 13 , wherein when sending the first resource and the second resource configured by the target node to the terminal device, the transceiver is specifically configured to:
 send the first resource and the second resource configured by the target node before the terminal device is handed over to the target node.   
     
     
         15 . The target node of  claim 13 , wherein the second resource is sent by the target node while sending the first resource. 
     
     
         16 . The target node of  claim 13 , wherein the transceiver is configured to:
 send the first resource via a handover command; or   send the first resource through a handover acknowledgement (ACK);   wherein the handover ACK is sent by the target node to a source node, and the handover command is sent by the target node to the terminal device through the source node.   
     
     
         17 . The target node of  claim 13 , wherein the handover response is a radio resource control connection reconfiguration complete message. 
     
     
         18 . The target node of  claim 13 , wherein
 the second resource is configured for the terminal device to directly send the handover response to the target node.