Abstract: Techniques for proxy based network access are discussed herein. In some examples, the techniques can be implemented in a network proxy device for Citizens Broadband Radio Service (CBRS). A base station or a domain proxy device may manage or otherwise use CBRS resources by exchanging signaling messages with a Spectrum Access System (SAS). The base station or domain proxy device may transmit signaling messages in a first private network to a network device bridging the first private network and a second private network with limited access to a public network. The network device send proxy message(s) in response to the signaling messages to the SAS and can establish an encrypted session layer or application layer tunnel between the base station and/or domain proxy device. The proxy based network access preserves secure networks while still allowing limited messaging with other public or private networks.

Abstract: Techniques for proxy based network access are discussed herein. In some examples, the techniques can be implemented in a network proxy device for Citizens Broadband Radio Service (CBRS). A base station or a domain proxy device may manage or otherwise use CBRS resources by exchanging signaling messages with a Spectrum Access System (SAS). The base station or domain proxy device may transmit signaling messages in a first private network to a network device bridging the first private network and a second private network with limited access to a public network. The network device send proxy message(s) in response to the signaling messages to the SAS and can establish an encrypted session layer or application layer tunnel between the base station and/or domain proxy device. The proxy based network access preserves secure networks while still allowing limited messaging with other public or private networks.

Abstract: The present invention relates to a valve device (1) for a ventilation installation. The valve device (1) comprises a vent surface (4) that is equipped with a plurality of vent apertures (5) and a slide valve (6) comprising a slide valve plate (7) equipped with a plurality of slide valve apertures (8). The valve plate formed such that it can be varied between taking a first position (I) at which the vent apertures (5) are covered by the slide valve plate (7), and taking a second position (II) at which at least some vent apertures (5) have surfaces that overlap with some slide valve apertures (8) such that an air flow is permitted through the valve device (1). The valve device (1) is designed such that when the slide valve plate (7) is positioned on that side of the vent surface (4) that normally has a relatively higher pressure, the high pressure side (9), than the other side, the low pressure side (10).

Abstract: The present invention relates to a ventilation device (1) comprising a first air duct (2) for air supply and a second air duct (3) for air supply. The first air duct (2) comprises a first outlet (4) for air flow and the second air duct (3) comprises a second outlet (5) for air flow, where the first outlet (4) is arranged to admit passage for a predefined amount of air per time unit (F-i). The second outlet (5) comprises a controllable choke device (6) that is arranged to either take a first position that admits passage for a predefined amount of air per time unit (F3) or a second position that does not admit passage of air. The ventilation device (1) comprises a control unit (7) and at least one detector (8, 9), where the control unit (7) is arranged to control the controllable choke device (6) in dependence of input data from said detector (8, 9) such that demand controlled ventilation is obtained.