Elta Systems Ltd.

Udi Weinsberg

Itay Sherman

Yaakov Shoshan

Adi Schwartz

A method operative in conjunction with a cellular communication network having a core element and comprising providing moving relays including base and mobile station functionality and a relay resource manager, all co-located, including providing an emergency moving relay from among the moving relays further including a simulated stationary network that includes a simulated IP connectivity gateway communicating with a simulated mobility management entity. The simulated stationary network simulates a stationary network's operation; the emergency moving relay being a root of a sub tree that includes moving relays and mobile stations, and is configured to utilize its mobile and base station functionalities and relay resource manager for operating in:

Moving cellular communication system operative in an emergency mode

Present ice skateshave a relatively great distance between the sole and the surface of the bladesfor contacting the ice in use. This leads to instability. The present invention provides an ice skate comprising a boot or shoe, a sole and at least one bladeintegral therewith, wherein the distance between the blade surface, for contact with ice in use, and the underside of the sole is approximately 20 mm or less.

The presently disclosed subject matter includes, inter alia, a separation module being operatively connectible to a network device operable to facilitate data communication in a communication network, the separation module being configured to control data communication in the communication network, the separation module being assigned with a network-id associating the separation module with a given network environment; the separation module being further configured to tag a data packet received by the network device from a first direction, in order to associate the data packet with a given network environment; and determine whether a tag, associated with a data packet received by the network device from a second direction, is compatible with the assigned network-id, and if it is, remove the tag from the data packet and allow transmission of the data packet.

Network environment separation

A communication system comprising moving relay/s including base- and mobile-station functionality and a radio manager, all co-located, emergency moving relay/s further including a simulated stationary network that includes a simulated IP connectivity gateway communicating with a simulated mobility management entity and simulating the operation of a stationary network; the emergency moving relay being a root of a subtree including moving relay/s and mobile station/s, and utilizing its mobile-station functionality, base station functionality and radio manager for normal and emergency operation including communicating to a designated mobile station in the subtree each message received from a moving relay mobile in the subtree, the message having an IP address of the designated mobile station; or communicating to the simulated stationary network each message received from a moving relay/mobile station in the subtree and having an IP address not matching any mobile station in the subtree.

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Ashdod, Israel

Udi Weinsberg