Abstract: Methods and systems for techniques for dynamic transmission switching among multiple bands are disclosed. In an implementation, a method of wireless communication includes receiving, by a user device, a signaling for a cell selection to select a subset of cells within up to two bands out of a set of cells within three or more bands, and performing, by the user device, a transmission on one or more cells within the selected subset of cells.

Abstract: Techniques are described to facilitate transmission by a communication device on multiple carriers. An example wireless communication method includes receiving, by a communication device, a first set of configurations for M active carriers or a second set of configurations for N bands, and an indication that identifies P carriers allowed for transmissions by the communication device, where each carrier from the M active carriers is located within one of the N bands, where the P carriers are from the M active carriers, where M and N are integers greater than 1, and where P is an integer greater than zero; and communicating, by the communication device, using one or more carriers from the P carriers.

Abstract: Provided are a response receiving and sending method, a retransmission method, a communication device, and a storage medium. The method includes: sending a transport block to a first communication device through a pre-configured period resource, and receiving a correct response corresponding to the transport block on a pre-configured correct response resource.

Abstract: Provided are an information transmission method and apparatus, a storage medium and an electronic apparatus. The method includes the following step: a PDSCH traffic with a length of a second TTI is received after an error of receiving a PDSCH traffic with a length of a first TTI is made; where a first transmission unit is supported in the first TTI, a second transmission unit and a third transmission unit are supported in the second TTI, and a transmission unit of the second TTI corresponds to a transmission unit of the first TTI.

Abstract: The present disclosure provides a method of all-position plasma welding process for titanium alloy pipeline, which may be used for welding a titanium alloy pipeline made of TA2 or TC4, with a wall thickness of 3˜16 mm, and a pipe diameter of 108 mm or more. When the wall thickness is 3˜9 mm, a keyhole type technology may be used for one-time welding formation, and when the wall thickness is 9˜16 mm, grooving treatment needs to be performed for the pipeline, and the keyhole type technology is used for backing welding, and then filling welding and covering welding are performed using filler wire welding through a melt-in technology. The method includes following steps: S1: performing pre-welding treatment for the pipeline; S2: clamping the pipeline; S3: setting welding parameters; S4: starting the welding.

Abstract: The present disclosure provides a method of all-position plasma welding process for titanium alloy pipeline, which may be used for welding a titanium alloy pipeline made of TA2 or TC4, with a wall thickness of 3˜16 mm, and a pipe diameter of 108 mm or more. When the wall thickness is 3˜9 mm, a keyhole type technology may be used for one-time welding formation, and when the wall thickness is 9˜16 mm, grooving treatment needs to be performed for the pipeline, and the keyhole type technology is used for backing welding, and then filling welding and covering welding are performed using filler wire welding through a melt-in technology. The method includes following steps: S1: performing pre-welding treatment for the pipeline; S2: clamping the pipeline; S3: setting welding parameters; S4: starting the welding.