Method and system for communication between machine to machine M2M service provider networks

A system comprising:

• a first Machine-to-Machine (M2M) entity registered in a first M2M network comprising a first M2M network domain, the first M2M entity configured to transmit a request addressed for a second M2M entity in the direction of a first network node anchoring the first M2M network and operative as a Network Services Capability Layer (NSCL) entity within the first M2M network domain;
• the first network node comprising communication interface circuitry configured to receive the request, and further comprising processing circuitry configured to:
• determine, based on an identifier included in the request, whether the second M2M entity resides within the first M2M network;
• responsive to determining that the second M2M entity does not reside in the first M2M network, request a Domain Name Server (DNS) node for a lookup on a hostname included in the request, the DNS node responding with an address of a second network node anchoring a second M2M network comprising a second M2M network domain and operative as an NSCL entity within the second M2M network domain, the second M2M network domain being distinct from the first M2M network domain and the second M2M entity being registered with the second network node, said DNS node having an address record mapped the hostname;
• and
• route the request towards the second network node, via the communication interface circuitry;
• and
• wherein the second network node is configured to forward the request to the second M2M entity, and the second M2M entity is configured to receive the request, process the request and respond to the first M2M entity via a path created by the previous node and entity operations.

A method in a first network node operative as a Network Services Capability Layer (NSCL) entity within a first Machine-to-Machine (M2M) network comprising a first M2M network domain, the method comprising:

• receiving a request from a first M2M entity registered in the first M2M network domain, the request targeting a second M2M entity;
• determining, based on an identifier included in the request, whether the second M2M entity resides in the first M2M network;
• responsive to determining that the second M2M entity does not reside in the first M2M network, requesting a Domain Name Server (DNS) node for a lookup on a hostname included in the request;
• receiving a response from the DNS node that includes an address of a second network node operative as an NSCL entity within a second M2M network comprising a second M2M network domain distinct from the first M2M network domain, the second M2M entity being registered to the second network node;
• and
• routing the request to the second network node using the address received from the DNS node.

A first network node configured to operate as a Network Services Capability Layer (NSCL) entity in a first Machine-to-Machine (M2M) network comprising a first M2M network domain, the first network node comprising:

• communication interface circuitry configured to communicate with one or more other network nodes hosting one or more other M2M entities within the first M2M network domain, and to communicate with nodes in one or more external networks;
• processing circuitry configured to:
• receive a request from a first M2M entity registered in the first M2M network domain, the request targeting a second M2M entity;
• determine, based on an identifier included in the request, whether the second M2M entity resides in the first M2M network;
• responsive to determining that the second M2M entity does not reside in the first M2M network, request a Domain Name Server (DNS) node for a lookup on a hostname included in the request;
• receiving a response from the DNS node that includes an address of a second network node operative as an NSCL entity within a second M2M network comprising a second M2M network domain distinct from the first M2M network domain, the second M2M entity being registered to the second network node;
• and
• route the request to the second network node using the address received from the DNS node.