Abstract: An umbrella frame having multiple stretching frames each composed of a long rib, a short rib, a stretcher, a connection plate, an elastic rod, a connector and a distal rod all made of plastic, wherein the improvement of the umbrella frame is that engaging parts such as blocks and protrusions on the elements are all made of plastic material and integrally formed with the elements respectively. Thus, joints of the umbrella frame have no erosion concerns in use.

Abstract: An umbrella frame has a main shaft and multiple branches pivotally attached around the main shaft. The main shaft has an immovable upper base and a movable lower base each having multiple retaining slots. Each branch is divided into a front section, a middle section and a rear section and has a supporting rib and a pulling rib both pivotally attached under the front section. Improvement of the umbrella frame is that the upper and lower bases respectively have multiple rectangular recesses individually and pivotally engaged pin heads on the front section or the supporting rib of each branch. Thereby, the umbrella frame is be quickly assembled or disassembled.

Abstract: An umbrella frame has a main shaft and multiple branches pivotally attached around the main shaft. The main shaft has an immovable upper base and a movable lower base each having multiple retaining slots. Each branch is divided into a front section, a middle section and a rear section and has a supporting rib and a pulling rib both pivotally attached under the front section. The front sections and the supporting ribs have pin heads to respectively engage the retaining slots on the upper and lower bases so that the branches are pivotally attached to the main shaft. Moreover, the supporting rib, the pulling ribs, the front section and middle section perform a quaternary-linkage to make operation conveniently and stably. Additionally, the umbrella frame is made of high-stiffness plastic so that the umbrella frame does not rust and has excellent anti-deforming efficiency.

Abstract: A method of providing authentication in a wireless network including sending, from a terminal to a wireless network a request for access authorization. The method includes transmitting from a server a return message. The return message is composed using a default sequence number value. The method includes initiating a resynchronization procedure based on receipt of the return message by the terminal and storing a sequence number in the terminal and in the server; and sending from the server, an authentication continuation message to the terminal.

Abstract: An umbrella frame has a lower runner, a main shaft, an upper runner, and a plurality of stretching frames. Each stretching frame has a stretcher, a connection plate, an elastic rod, a connector, a distal rod, a long rib, and a short rib. The connection plate has a first end protrusion and a second end proton. The connector has an end notch, an end hole, and a lower protruded block having a circular hole. The long rib has an end protruded block inserted in the circular hole, an inner protruded bar having a first through aperture, and an outer protruded bar having a second through aperture. The elastic rod is inserted through a spacing defined by the upper pressing bar and the long rib The short rib has a distal protruded block, an upper protruded bar having a round aperture, and a lower lobe having a circular aperture. The elastic rod has two end hooks. The elastic rod is hooked in the end notch and the round aperture. The distal protruded block is inserted in the first through aperture.