Savox Communications Oy Ab (ltd)

Other

Savox International S.a.

Aina Wireless Finland Oy

Pasi Auranen

Hasse Sinivaara

Juha Ylönen

Mika Bordi

Pasi Pihlajaniemi

Tomi Kankainen

Janne Pöllänen

Tero Alén

The present invention introduces a system, which comprises a telecommunication network structure, which can be called as an intelligent combination of Push-To-Talk (i.e. Direct Mode Operation, DMO) communication technique and cellular network application. The DMO can be set as a preferred choice if it is available. The subscriber devices retransmit (i.e. forward) the data message further until the message reaches the called subscriber terminal. The total cumulative hop between subscriber terminals may comprise both DMO-based hops and cellular connections. ID means are provided, and telemetric information can be sent from the terminals. The invention allows emergency information submissions from the terminals, and forced broadcast information from an administrator to the terminals as well. Dynamic Talk Groups (DTG) can be defined based on geographic locations on each registered user.

Wireless communication network enabling combined use of several different network technologies

Electronic accessory device capable of dynamically muting the microphone and/or speaker responsive to predefined user control input, and a communications terminal at least functionally connected to the accessory for the transfer of audio signals and related signaling. Related methods for execution by the accessory and the terminal are presented.

Electronic accessory incorporating dynamic user-controlled audio muting capabilities, related methods and communications terminal

Apparatus for controlling push-to-talk communication over a professional mobile radio includes a control portion including a first optical transceiver portion for converting an optical downlink signal into an electrical downlink signal for presentation to a user and for converting an electrical uplink signal into an optical uplink signal for provision to a radio portion; one or more interface portions, each connected to the control portion by an optical link, each connectable to a respective radio portion by electrical connection, which radio portion enables communication via a respective wireless communication link over one or more communication channels, each interface portion including a second optical transceiver portion for converting a downlink signal received from the respective radio portion as an electrical signal into the optical downlink signal for provision to the control portion and for converting the optical uplink signal into an electrical uplink signal for provision to the respective radio portion.

Communication apparatus, a communication arrangement and a communication method

A wearable chassis for a helmet has a shape suitable to be worn on a head of a user and being attachable inside a protective structure having a shape protecting the user's from an external impact. The chassis includes one or more connection ports for connecting an electronic device, a control interface for connecting a control unit, a wiring arrangement for connecting the one or more connection ports to the control interface, and a mounting arrangement for attaching an accessory device to the chassis. Moreover, a helmet including such a chassis and the protective structure having a shape protecting a head of a user from an external impact attached to the chassis, as well as a helmet arrangement including such a chassis and one or more protective structures, each having a shape protecting a head of a user from an external impact, removably attachable to the chassis are provided.

Helmet system with a wearable chassis

A method and arrangement for connecting an ad-hoc communication network () to a permanent communication network () via a half-duplex communication link (). The ad-hoc communication network is established between communication devices (-) and a gateway device () using a routing protocol that is run in the gateway device and in the communication devices. Relaying of data between the ad-hoc communication network and the permanent communication network is controlled by setting the following relaying operations into a pre-determined order of mutual priority: relaying data from the ad-hoc communication network to the permanent communication network and relaying data from the permanent communication network to the ad-hoc communication network. The pre-determined order of priority facilitates data transfer via the half-duplex communication link between the permanent communication network and the ad-hoc communication network that can be either a full-duplex network or a half-duplex network.

Arrangement and method for connecting an ad-hoc communication network to a permanent communication network via a half-duplex communication link

A method and arrangement for connecting an ad-hoc communication network () to a permanent communication network (), e.g. to a cellular mobile communication network. The ad-hoc communication network is established between communication devices (-) and a gateway device () using a routing protocol that is run in the gateway device and in the communication devices. A protocol address that is associated in a communication device with a protocol data unit is determined on the basis of a control action given by a user of the communication device. In a gateway device, the protocol data unit is relayed to the permanent communication network if the protocol data unit is provided with a pre-determined protocol address. The user of the communication device can determine with the aid of the control action whether he is communicating only inside the ad-hoc communication network or via the permanent communication network.

Growing community of inventors

Salo, Finland

Pasi Auranen