Abstract: The present invention relates to a group switching method under energy saving modes and belongs to the technical field of communications. By dynamically managing the access and switchover of users through the grouping method, the existing users are provided with services of sufficient quality and quantity, and the switching efficiency is improved so that the cells are prevented from overloading and wasting resources. The proposed group switching method is mainly to group switch users and energy saving compensation cells according to the business types of users and dynamically divide user groups and access the user groups according to resources required by the users and the relationship of sizes of resources provided by the compensation cells. The method fully guarantees the business needs of users and improves the utilization rate of cell resources.

Abstract: The present disclosure relates to systems and methods for a handover. The methods may include establishing a connection between a vehicle terminal and a first macro evolved Node B (MeNB) and a connection between the vehicle terminal and a secondary evolved Node B (SeNB), the vehicle terminal in a dual connectivity mode with the first MeNB and the SeNB; receiving, by the vehicle terminal, a handover command from the first MeNB; and disconnecting, based on the handover command, the vehicle terminal from the first MeNB and establishing synchronization between the vehicle terminal and a second MeNB, wherein the connection between the vehicle terminal and the SeNB is maintained. The SeNB is a secondary vehicle terminal meeting a preset condition or an SeNB installed at a fixed location.

Abstract: The present disclosure disclosed a method of determining a buffer status report (BSR). The method comprises obtaining, by a user equipment (UE) from a buffer, data item to be sent; determining, by the UE, a size of the data item to be sent; determining, by the UE, a minimum number of required logical channel groups (LCGs) based on the data item to be sent; and determining, by the UE, at least one BSR with flexible length based on the size of the data item to be sent and the minimum number of the required LCGs. Information of the at least one BSR with flexible length includes the minimum number of the required LCGs, LCG identifiers (LCG IDs) respectively associated with the minimum number of the required LCGs, and at least one buffer area corresponding to the LCG IDs.

Abstract: The present disclosure relates to systems and methods for a handover. The methods may include establishing a connection between a vehicle terminal and a first macro evolved Node B (MeNB) and a connection between the vehicle terminal and a secondary evolved Node B (SeNB), the vehicle terminal in a dual connectivity mode with the first MeNB and the SeNB; receiving, by the vehicle terminal, a handover command from the first MeNB; and disconnecting, based on the handover command, the vehicle terminal from the first MeNB and establishing synchronization between the vehicle terminal and a second MeNB, wherein the connection between the vehicle terminal and the SeNB is maintained. The SeNB is a secondary vehicle terminal meeting a preset condition or an SeNB installed at a fixed location.

Abstract: The present disclosure relates to systems and methods for a handover. The methods may include establishing a connection between a vehicle terminal and a first macro evolved Node B (MeNB) and a connection between the vehicle terminal and a secondary evolved Node B (SeNB), the vehicle terminal in a dual connectivity mode with the first MeNB and the SeNB; receiving, by the vehicle terminal, a handover command from the first MeNB; and disconnecting, based on the handover command, the vehicle terminal from the first MeNB and establishing synchronization between the vehicle terminal and a second MeNB, wherein the connection between the vehicle terminal and the SeNB is maintained. The SeNB is a secondary vehicle terminal meeting a preset condition or an SeNB installed at a fixed location.

Abstract: The present disclosure relates to systems and methods for a handover. The methods may include establishing a connection between a vehicle terminal and a first macro evolved Node B (MeNB) and a connection between the vehicle terminal and a secondary evolved Node B (SeNB), the vehicle terminal in a dual connectivity mode with the first MeNB and the SeNB; receiving, by the vehicle terminal, a handover command from the first MeNB; and disconnecting, based on the handover command, the vehicle terminal from the first MeNB and establishing synchronization between the vehicle terminal and a second MeNB, wherein the connection between the vehicle terminal and the SeNB is maintained. The SeNB is a secondary vehicle terminal meeting a preset condition or an SeNB installed at a fixed location.

Abstract: The present disclosure disclosed a method of determining a buffer status report (BSR). The method comprises obtaining, by a user equipment (UE) from a buffer, data item to be sent; determining, by the UE, a size of the data item to be sent; determining, by the UE, a minimum number of required logical channel groups (LCGs) based on the data item to be sent; and determining, by the UE, at least one BSR with flexible length based on the size of the data item to be sent and the minimum number of the required LCGs. Information of the at least one BSR with flexible length includes the minimum number of the required LCGs, LCG identifiers (LCG IDs) respectively associated with the minimum number of the required LCGs, and at least one buffer area corresponding to the LCG IDs.