Method, apparatus and system for relocating user equipment between radio network controllers
View Patent ↗The present invention, relating to the field of communications technologies, discloses a method, an apparatus, and a system for relocating a user equipment between radio network controllers. The present invention is directed to configuring the coding scheme configured for the user equipment UE to a coding scheme consistent with the coding scheme supported by a target radio network controller to relocate the UE to the target RNC. The present invention is mainly applicable to inter-RNC handovers.
1. A method for relocating a user equipment (UE) between radio network controllers, the method comprising:
receiving, by a target radio network controller (RNC), a UE-not-involved RNC relocation required message, wherein the message comprises a transparent container from a source RNC to the target RNC sent by the source RNC and a coding scheme indicated by a core network (CN), wherein the transparent container includes a coding scheme configured for the UE; and
in response to determining that the coding scheme configured for the UE is inconsistent with the coding scheme indicated by the CN, sending a transparent container by the target RNC to the source RNC, wherein the transparent container comprises a reconfiguration message used to change the coding scheme of the UE, so that the source RNC sends a reconfiguration message to the UE.
2. The method for relocating the UE between radio network controllers according to claim 1 , further comprising:
receiving, by the target RNC, a reconfiguration complete message sent by the UE, so as to complete the reconfiguration of the coding scheme configured for the UE and a relocation of the UE; and
sending, by the target RNC, the reconfiguration complete message to the CN.
3. The method for relocating the UE between radio network controllers according to claim 2 , wherein after receiving, by the target RNC, the reconfiguration complete message sent by the UE, the method further comprises:
sending, by the target RNC, a relocation detect message to the CN; and
starting to operate as an serving radio network controller (SRNC), so that the CN switches a user plane from the source RNC to the target RNC.
4. The method for relocating the UE between radio network controllers according to claim 3 , wherein the step of starting to operate as an SRNC, so that the CN switches the user plane from the source RNC to the target RNC comprises:
sending, by the target RNC, a relocation message to a Mobile Switching Center (MSC) so as to complete the relocation of the UE.
5. The method for relocating the UE between radio network controllers according to claim 1 , wherein the transparent container from the target RNC to the source RNC is included in a relocation command message that is sent to the source RNC by the CN.
6. A radio network controller (RNC), comprising:
a receiver device, configured to receive a user equipment (UE)-not-involved RNC relocation required message, wherein the message comprises a transparent container from a source RNC to a target RNC sent by the source RNC and a coding scheme indicated by a core network (CN), wherein the transparent container includes a coding scheme configured for the UE; and
a sender device, configured to send the source RNC a transparent container from the target RNC to the source RNC, wherein the transparent container comprises a reconfiguration message used to change the coding scheme of the UE, so that the source RNC sends a reconfiguration message to the UE.
7. The RNC according to claim 6 ,
wherein the receiver device is further configured to: receive a reconfiguration complete message sent by the UE, so as to complete the reconfiguration of the coding scheme configured for the UE and a relocation of the UE; and
wherein the sender device is further configured to: send the reconfiguration complete message to the CN.
8. The RNC according to claim 7 ,
wherein the sender device is further configured to: send a relocation detect message to the CN; and
wherein the RNC starts to operate as an serving radio network controller (SRNC), so that the CN switches a user plane from the source RNC to the target RNC.
9. The RNC according to claim 8 , wherein the sender device is further configured to:
send a relocation message to a Mobile Switching Center (MSC) so as to complete the relocation of the UE.
10. The RNC according to claim 6 , wherein the transparent container from the target RNC to the source RNC is included in a relocation command message that is sent to the source RNC by the CN.
11. A radio network controller (RNC), comprising:
a sender device, configured to send a user equipment (UE)-not-involved RNC relocation required message to a core network (CN), so that the CN sends a relocation required message to a target RNC; and
a receiver device, configured to receive a relocation command message sent by the CN, wherein the relocation command message comprises a transparent container from the target RNC to a source RNC sent by the target RNC, wherein the transparent container comprises a UE coding scheme reconfiguration message;
wherein the sender device is further configured to send a reconfiguration message to the UE, that causes the UE to change the coding scheme according to the reconfiguration message.