Abstract:
The sites join respective location area multicast addresses to receive messages from other sites in their location area. Communication units desiring to participate in talkgroup calls need only to register affiliation with a first site of the location area. Upon the first site receiving an affiliation message, it joins a payload multicast group address to receive payload for the talkgroup. In alternative embodiments, the first site sends, via the location area multicast address, either control message(s) or tunneled payload associated with the talkgroup call to secondary site(s) of the location area. The sites initiate paging sequences to determine whether communication units at their sites desire to participate in the call and, based on the responses, the sites may deliver stored payload and/or join the payload multicast group address to receive payload for the call.
Abstract:
Techniques are provided for forming networks based on services offered or provided by particular leader nodes. Client nodes in the network can select a particular leader node based on a desired service offered or provided by the particular leader node. The client nodes can become a part of a different structured network such that the client nodes can have access to a desired service provided, either directly or indirectly, by the particular leader node.
Abstract:
A wireless communication system 200 comprises a connectionless packet network 201 coupled to a plurality of sites 203-208 that are in wireless communication with a plurality of subscriber units 210-217 logically arranged into a plurality of talk groups having corresponding talk group identifications. In one embodiment, each site maintains mappings 220-225 of at least one multicast address to at least one talk group identification. In another embodiment, individual subscriber units maintain such mappings 320. When a subscriber unit affiliates with a given site and talk group (501, 601), the site identifies a multicast address corresponding to the talk group. Based on the multicast address, the site can participate in traffic targeted for the multicast address and, consequently, for the talk group. In this manner, mobility Processing is decentralized, system calability is improved and call setup delays are minimized.
Abstract:
A wireless communication system (200) comprises a connectionless packet network (201) coupled to a plurality of sites (203-208) that are in wireless communication with a plurality of subscriber units (210-217) logically arranged into a plurality of talk groups having corresponding talk group identifications. In one embodiment, each site maintains mappings (220-225) o f at least one multicast address to at least one talk group identification. In another embodiment, individual subscriber units maintain such mappings (320) . When a subscriber unit affiliates with a given site and talk group (501, 601 ), the site identifies a multicast address corresponding to the talk group. Bas ed on the multicast address, the site can participate in traffic targeted for t he multicast address and, consequently, for the talk group. In this manner, mobility processing is decentralized, system scalability is improved and cal l setup delays are minimized.
Abstract:
Upon a first communication unit (213) initiating a call request for a 2-party call with a second communication unit (215), a call server (235) identifies respective multicast IP addresses (MC1, MC2) associated with the source and target. If the first communication unit (213), or associated site (205) desires to send payload to the second communication unit (215), it addresses the payload to the multicast IP address (MC2) of the second communication unit, and the second communication unit (215), or associated site (206) joins the multicast address (MC2) to receive the payload. Conversely, if the second communication unit (215), or associated site (206) desires to send payload to the first communication unit (213), it addresses the payload to the multicast IP address (MC1) of the first communication unit, and the first communication unit (213), or associated site (205) joins the multicast address (MC1) to receive the payload.
Abstract:
A wireless communication system (200) comprises a connectionless packet network (201) coupled to a plurality of sites (203-208) that are in wireless communication with a plurality of subscriber units (210-217) logically arranged into a plurality of talk groups having corresponding talk group identifications. In one embodiment, each site maintains mappings (220-225) of at least one multicast address to at least one talk group identification. In another embodiment, individual subscriber units maintain such mappings (320). When a subscriber unit affiliates with a given site and talk group (501, 601), the site identifies a multicast address corresponding to the talk group. Based on the multicast address, the site can participate in traffic targeted for the multicast address and, consequently, for the talk group. In this manner, mobility processing is decentralized, system scalability is improved and call setup delays are minimized.
Abstract:
Techniques are provided for forming networks based on services offered or provided by particular leader nodes. Client nodes in the network can select a particular leader node based on a desired service offered or provided by the particular leader node. The client nodes can become a part of a different structured network such that the client nodes can have access to a desired service provided, either directly or indirectly, by the particular leader node.
Abstract:
A system (100) and method (300) for mesh/ad hoc participation is provided. The method can include providing (310) an incentive to a user operating a device in an ad hoc network and determining (320) network resources associated with providing the incentive. The method can establish a credit system for devices within the ad hoc network, evaluate a supply and demand for the network resources, and allocate credits to the devices for forwarding packets in the ad hoc network. The method can determine a delivery capacity for the devices and negotiate an optimal packet route through the devices in the ad hoc network based on the supply and demand.