Cell Handover Method, Communication Apparatus, and System
AssigneeHuawei Technologies Co., Ltd.
InventorsLi Hu, Yinghao Jin, Rui Wang
Life of this patent
Estimating the term…
Abstract
When triggering a handover request, a source network device requests a measurement indication from a target access network device using the handover request, where the measurement indication indicates the terminal device to measure a channel state of a target cell. In this way, the source network device sends the measurement indication to the terminal device using an RRC reconfiguration message. Then, the terminal device measures the specified channel state of the target cell based on the measurement indication, to obtain a measurement result, and then determines, depending on whether the measurement result meets a handover condition, whether to perform cell handover.
Claims20
A method comprising:
- receiving, by a terminal device, a radio resource control (RRC) reconfiguration message from a source access network device, wherein the RRC reconfiguration message carries a measurement indication and a handover condition, the measurement indication indicating the terminal device to measure a channel state of a target cell;
- measuring, by the terminal device, the channel state of the target cell based on the measurement indication, to obtain first signal quality of the target cell;
- and
- determining, by the terminal device based on the first signal quality of the target cell and the handover condition, whether to perform a handover procedure to handover to the target cell.
A communication system, comprising a source access network device and a target access network device, wherein
- the source access network device is configured to:
- receive a measurement report from a terminal device, wherein the measurement report comprises second signal quality of a target cell of the target access network device;
- and send a handover request to the target access network device when determining, based on the second signal quality of the target cell, to hand over the terminal device to the target cell;
- the target access network device is configured to:
- receive the handover request from the source network device, and send a handover request acknowledgement to the source access network device, wherein the handover request acknowledgement comprises a measurement indication, and the measurement indication indicates the terminal device to measure a channel state of the target cell;
- and
- the source access network device is further configured to:
- receive the handover request acknowledgement from the target access network device, and send a radio resource control (RRC) reconfiguration message to the terminal device, wherein the RRC reconfiguration message carries the measurement indication and a handover condition, and the handover condition indicates a condition to be met for the terminal device to perform cell handover.
An apparatus comprising:
- at least one processor;
- and
- a non-transitory memory coupled to the at least one processor and having program instructions stored thereon, which, when executed by the at least one processor, cause the apparatus to:
- receive a radio resource control (RRC) reconfiguration message from a source access network device, wherein the RRC reconfiguration message carries a measurement indication and a handover condition, the measurement indication indicating to measure a channel state of a target cell;
- measure the channel state of the target cell based on the measurement indication, to obtain first signal quality of the target cell;
- and
- determine, based on the first signal quality of the target cell and the handover condition, whether to perform a handover procedure to handover to the target cell.
Dependencies are inferred from the claim text.