Apparatus and method for moving WCDMA mobile station in the manner of the least packet loss

摘要

A method for moving MS in the manner of the least packet loss can be divided into two steps. In the first step, when the MS is still connected to the source CN node and is running the effective loads, the MS prepares the routing information pointing at the target CN node. In the second step, the connection between the source CN node and the RAN node is released, the MS ID, the context data and the mobile information are transmitted to the target CN node. Then, a new connection between the target CN node and the RAN node is established. The step is completed synchronously and rapidly to minimize the packet loss. When establishing a new connection, the routing information transmitted to the MS before is used so that a new CN node is pointed at.

主权项

1. A source attachment node in a wireless communication network, comprising:
a processing unit; a memory operatively connected to the processing unit; and a communication interface operatively connected to the processing unit; wherein the processing unit is configured to execute instruction sets stored in the memory to receive mobile station (MS) related information via the communication interface and handle a connection status of an MS, and is further configured to move a connection of the MS from the source attachment node to a target attachment node by:
obtaining, via the communication interface, a decision to move the MS to the target attachment node;transmitting, via the communication interface, reallocation messages to the MS with an identification of the target attachment node;releasing a connection between the source attachment node and the MS; andpaging the MS to move the connection of the MS from the source attachment node to the target attachment node.