Data transmission method, access network device, and communication system
AssigneeHuawei Technologies Co., Ltd.
InventorsLihong Wan, Lei Deng
Life of this patent
Estimating the term…
Abstract
A data transmission method, an access network device, and a communications system are provided. The access network device obtains, from a first core network (CN) element through a control plane interface, information about a bearer that needs to be established, establishes the bearer according to the information about the bearer, and notifies, through the first CN element, the established bearer to a second CN element for use. When a signal of the control plane interface is interrupted, the access network device transmits to-be-transmitted data in an existing service of UE by using the established bearer.
Claims9
A method, comprising:
- obtaining, by an access network device from a first core network element through a control plane interface, information about a bearer to be established, wherein a communications system comprises the access network device and a core network device, and the core network device comprises the first core network element and a second core network element, wherein the control plane interface is between the access network device and the first core network element, and a user plane interface is between the access network device and the second core network element;
- establishing, by the access network device, the bearer according to the information about the bearer to be established;
- notifying, by the access network device, the established bearer to the second core network element through the first core network element;
- maintaining, by the access network device when a signal of the control plane interface is interrupted, a radio resource control (RRC) connection between a user equipment (UE) and the access network device;
- and
- releasing, by the access network device, the RRC connection in response to detecting that the signal of the control plane interface has returned to normal.
A device, comprising:
- a processor;
- and
- a non-transitory computer readable storage medium;
- wherein the device is applied to an access network device, wherein the access network device is applied to a communications system, the communications system comprises the access network device and a core network device, and the core network device comprises a first core network element and a second core network element, wherein a control plane interface is between the access network device and the first core network element, and a user plane interface is between the access network device and the second core network element;
- wherein the non-transitory computer readable storage medium stores a program, and the processor is configured to execute the program to:
- obtain, from the first core network element through the control plane interface, information about a bearer to be established;
- establish the bearer according to the information about the bearer to be established;
- notify the established bearer to the second core network element through the first core network element;
- maintain, when a signal of the control plane interface is interrupted, a radio resource control (RRC) connection of a user equipment (UE);
- and
- release the RRC connection of the UE in response to detecting that the signal of the control plane interface has returned to normal.
A non-transitory computer readable medium comprising a program, wherein when the program is executed by a processor, the following steps are performed:
- obtaining, from a first core network element through a control plane interface, information about a bearer that needs to be established;
- establishing the bearer according to the information about the bearer that needs to be established;
- notifying the established bearer to a second core network element through the first core network element;
- maintaining, when a signal of the control plane interface is interrupted, a radio resource control (RRC) connection of a user equipment (UE);
- and
- releasing the RRC connection of the UE in response to detecting that the signal of the control plane interface has returned to normal.
Dependencies are inferred from the claim text.