Abstract: An experimental device and method for supercritical CO2/H2O mixed fluid huff and puff for shale oil development includes a CO2 storage tank, a water vapor generator, a mixing vessel, and a core holder; the CO2 storage tank and the water vapor generator are in communication with the mixing vessel; a first pressure gauge and a hygronom are connected to an upper end of the mixing vessel, and a displacement pump is connected to a lower end of the mixing vessel; the mixing vessel is connected to an inlet end of the core holder; the core holder is connected to an inlet end of a drying pipe, and the measuring cylinder is disposed upside down in a liquid containing dish, where the liquid containing dish and the measuring cylinder are filled with a saturated sodium carbonate solution.

Abstract: Embodiments of the present disclosure relate to the field of communications technologies, and disclose a data stream transmission method, and a related device and system. The data stream transmission method includes: a user equipment establishes a first network link over a first network and a second network link over a second network with a network side, where the first network is different from the second network; the user equipment associates the first network link with the second network link; and the user equipment distributes, according a scheduling algorithm, a data stream to the first network link and to the second network link for transmission. In the embodiments of the present disclosure, hybrid transmission of a data stream may be implemented in different networks. Compared with an existing solution, in the embodiments of the present disclosure, distribution may be performed more flexibly, and a quality of service assurance may be improved.

Abstract: A method and apparatus for transmitting a Traffic Indication message from a BS to a MSS in Sleep Mode is provided in embodiments of the present invention. The method includes: transmitting, by the BS, a Traffic Indication message to the MSS, and setting a flag in the Traffic Indication message for indicating the indication mode of the traffic transmission of a sleep group; receiving, by the Mobile Subscriber Station, the Traffic Indication message, and determining whether each sleep group has a traffic transmission indication according to the flag, if so, the Mobile Subscriber Station changes the corresponding state of the sleep group to non-activated and receives the traffic; otherwise, the Mobile Subscriber Station maintains the sleep group in the activated state.

Abstract: A method for distributing encryption keys in WLAN that combines a key distribution process with an authentication process of mobile hosts and utilizes an authentication server or a wireless gateway to manage key distribution so that mobile hosts can roam in a scope larger than the coverage area of the key management server. Because the key distribution does not transmit the key, which is not encrypted via the air interface, the method ensures the key is safe. In addition, the method can be used under different WLAN protocols. Because the AP does not need to manage user information, the method simplifies AP structure, and thus lowers the cost.