Abstract: A method for establishing tunnels includes establishing a first unidirectional tunnel from a first node to a second node, and sending a first instruction for establishing a reverse tunnel of the first tunnel, when sending the first instruction to the second node, triggering the establishment of a second unidirectional tunnel from the second node to the first node, and binding the second tunnel to the first tunnel as the reverse tunnel of the first tunnel. A system for establishing tunnels is also provided. The establishment of a reverse tunnel may be automatically triggered after a forward tunnel is established, and a bidirectional tunnel is established.

Abstract: A drive system of an electric vehicle includes a drive motor, a transmission and a hydraulic system. The transmission has an input shaft, a countershaft, an output shaft, a first transmission unit placed between the countershaft and the output shaft, a first clutch, a second transmission unit placed between the countershaft and the input shaft, and a second clutch. The drive motor is attached to the input shaft, which is attached to the countershaft to provide power of the drive motor to the countershaft; the first clutch is configured for linking or cutting off the power transmission between the countershaft and the first transmission unit; and the second clutch is configured for linking or cutting off the power transmission between the countershaft and the second transmission unit. The first transmission unit has a first transmission ratio greater than a second transmission ratio of the second transmission unit.

Abstract: A method for establishing tunnels includes establishing a first unidirectional tunnel from a first node to a second node, and sending a first instruction for establishing a reverse tunnel of the first tunnel, when sending the first instruction to the second node, triggering the establishment of a second unidirectional tunnel from the second node to the first node, and binding the second tunnel to the first tunnel as the reverse tunnel of the first tunnel. A system for establishing tunnels is also provided. The establishment of a reverse tunnel may be automatically triggered after a forward tunnel is established, and a bidirectional tunnel is established.

Abstract: A method, device, and system for establishing a label switching path (LSP) in fast rerouting (FRR) switching are provided, which can ensure that an ingress point and a merge point (MP) refresh path information in time. The method includes that first messages are respectively sent to an ingress point and an MP on an LSP, where the first messages carry information of holding a path refreshing state, so that the ingress point and MP determine the time of holding the path refreshing state according to the information of holding the path refreshing state; and second messages are respectively sent to the ingress point and the MP in the time of holding the path refreshing state, where the second messages carry information of refreshing a path state, so that the ingress point and MP establish the LSP according to the information of refreshing the path state.

Abstract: A method for establishing tunnels includes establishing a first unidirectional tunnel from a first node to a second node, and sending a first instruction for establishing a reverse tunnel of the first tunnel, when sending the first instruction to the second node, triggering the establishment of a second unidirectional tunnel from the second node to the first node, and binding the second tunnel to the first tunnel as the reverse tunnel of the first tunnel. A system for establishing tunnels is also provided. The establishment of a reverse tunnel may be automatically triggered after a forward tunnel is established, and a bidirectional tunnel is established.

Abstract: The method includes: acquiring an energy price of each node in a wireless relay network, and link information about links between each node and its neighboring nodes, wherein the energy price is determined according to the following rule: the fewer residual energy of a node is, the higher the energy price of the node is; according to the energy price of each node and the link information, determining, in the case that each node is selected as a relay node, power allocation corresponding to a minimum value of an objective function that is based on the energy price of the node; and based on the power allocation and the energy price of each node, determining the node and power allocation corresponding to the minimum value of the objective function used when the power allocation is performed for each node as the relay node and power allocation for data transmission, respectively.

Abstract: A drive system of an electric vehicle includes a drive motor, a transmission and a hydraulic system. The transmission has an input shaft, a countershaft, an output shaft, a first transmission unit placed between the countershaft and the output shaft, a first clutch, a second transmission unit placed between the countershaft and the input shaft, and a second clutch. The drive motor is attached to the input shaft, which is attached to the countershaft to provide power of the drive motor to the countershaft; the first clutch is configured for linking or cutting off the power transmission between the countershaft and the first transmission unit; and the second clutch is configured for linking or cutting off the power transmission between the countershaft and the second transmission unit. The first transmission unit has a first transmission ratio greater than a second transmission ratio of the second transmission unit.

Abstract: A method for establishing tunnels includes establishing a first unidirectional tunnel from a first node to a second node, and sending a first instruction for establishing a reverse tunnel of the first tunnel, when sending the first instruction to the second node, triggering the establishment of a second unidirectional tunnel from the second node to the first node, and binding the second tunnel to the first tunnel as the reverse tunnel of the first tunnel. A system for establishing tunnels is also provided. The establishment of a reverse tunnel may be automatically triggered after a forward tunnel is established, and a bidirectional tunnel is established.

Abstract: A method, device, and system for establishing a label switching path (LSP) in fast rerouting (FRR) switching are provided, which can ensure that an ingress point and a merge point (MP) refresh path information in time. The method includes that first messages are respectively sent to an ingress point and an MP on an LSP, where the first messages carry information of holding a path refreshing state, so that the ingress point and MP determine the time of holding the path refreshing state according to the information of holding the path refreshing state; and second messages are respectively sent to the ingress point and the MP in the time of holding the path refreshing state, where the second messages carry information of refreshing a path state, so that the ingress point and MP establish the LSP according to the information of refreshing the path state.