Method and device for resuming data radio bearer, storage medium and electronic device

A method for activating a Secondary Cell Group (SCG) SCG, comprising:

• sending, by a network-side network element, a Radio Resource Control (RRC) connection reconfiguration message or a RRC connection resume message to a User Equipment (UE), wherein the RRC connection reconfiguration message or RRC connection resume message includes SCG configuration information of the UE, and the SCG configuration information is used for instructing the UE to activate or not to activate a SCG;
• before sending the RRC connection reconfiguration message or the RRC connection resume message to the UE, the method further comprises:
• receiving, by the network-side network element, indication information sent by the UE, the indication information being used for indicating a first data radio bearer in data radio bearers maintained by the UE, and the first data radio bearer being a data radio bearer needing to send uplink data;
• wherein the indication information comprises:
• a first Identity (ID) for indicating a type of radio resource used by the first data radio bearer, or indicating that there is uplink data of the data radio bearer using SCG resources needing to be sent;
• wherein the indication information is sent by the UE to the network-side network element through at least one of the following:
• an information element comprised in a Radio Resource Control (RRC) message sent to the network-side network element, and a Media Access Control Element (MAC CE) sent to the network-side network element,
• wherein sending the indication information to the network-side network element through the MAC CE sent to the network-side network element comprises:
• redefining the MAC CE sent to the network-side network element, the redefined MAC CE being used for indicating an SCG Buffer Status Report (SCG BSR) of buffer information of logical channel group mapped in the SCG, and sending the indication information to the network-side network element through the redefined MAC CE;
• or,
• adding information for indicating the logical channel group buffer in the into a BSR MAC CE, and sending the indication information to the network-side network element through the BSR MAC CE.

A device for activating a Secondary Cell Group (SCG) SCG, allocated in a User Equipment (UE), comprising:

• a receiving module, configured to receive a Radio Resource Control (RRC) connection reconfiguration message or a RRC connection resume message sent by a network-side network element, wherein the RRC connection reconfiguration message or RRC connection resume message includes SCG configuration information of the UE, and the SCG configuration information is used for instructing the UE to activate or not to activate a SCG;
• a determination module, configured to determine whether to activate the SCG according to the SCG configuration information;
• an indicating module, configured to send, before receive the RRC connection reconfiguration message or the RRC connection resume message, indication information to a network-side network element, the indication information being used for indicating a first data radio bearer in data radio bearers maintained by the UE, and the first data radio bearer being a data radio bearer needing to send uplink data,
• wherein the indication information comprises:
• a first Identity (ID) for indicating a type of radio resource used by the first data radio bearer, or indicating that there is uplink data of the data radio bearer using Secondary Cell Group (SCG) resources needing to be sent,
• wherein the indication information is sent by the UE to the network-side network element through at least one of the following:
• an information element comprised in a Radio Resource Control (RRC) message sent to the network-side network element, and a Media Access Control Element (MAC CE) sent to the network-side network element,
• wherein the device is further configured to:
• redefine the MAC CE sent to the network-side network element, the redefined MAC CE being used for indicating an SCG Buffer Status Report (SCG BSR) of buffer information of logical channel group mapped in the SCG, and send the indication information to the network-side network element through the redefined MAC CE;
• or,
• add information for indicating the logical channel group buffer in the into a BSR MAC CE, and send the indication information to the network-side network element through the BSR MAC CE.