Abstract: A method and system for peer to peer wide area network communication is provided. A peer in the network receives one or more media and one or more associated control signaling from any one of a plurality of Logical Media/Control Channels, wherein each Logical Media/Control Channel is associated with a Transport Resource on a base station; formats the media into a Formatted Media Packet; formats the control signaling into an Internet Peer to Peer Control Signaling; concatenates the Formatted Media with the Internet-Peer to Peer Control Signaling to form a Concatenated Packet comprising an Internet-Peer to Peer Control Signaling and a Media Packet; duplicates the Concatenated Packet, thereby forming a duplicated Concatenated Packet comprising at least one of a unicast packet and a multicast packet; and transmits the duplicated Concatenated Packets via the wide area network.

Abstract: Methods for informing a mobile device of adjacent sites in a RF communication system wherein the RF communication system comprises a first network and a second network are disclosed. A mobile device in the first network of the RF communication system updates a signaling gateway with position information of the mobile device wherein the signaling gateway interfaces between the first network and the second network and receives a list of adjacent sites in the second network from the signaling gateway.

Abstract: A method for synchronizing audio reproduction in collocated end devices is presented. Each of the devices auto-correlates using noise to determine a threshold prior to the antenna receiving an audio signal. When the devices receive a common audio signal, they provide audio outputs. Each device cross-correlates its audio output with the audio outputs of the other devices. The timing of the audio output of each device is then adjusted such that the audio outputs of all of the devices align temporally with the lagging or leading device.

Abstract: A method of operating a peer to facilitate fast group communication between subscribers in a peer-to-peer wide area network is disclosed. In the peer-to-peer wide area network, each of the subscribers are affiliated to a talkgroup, and further registered to at least one peer within the peer-to-peer wide area network. In operation, the peer exchanges messages with other peers to determine that one or more peers listed in a talkgroup topology is still active. When the peer receives a media for a talkgroup from a subscriber affiliated to the talkgroup, the peer duplicates the media for the talkgroup, and unicasts the duplicate media to the one or more peers that are listed as active in the talkgroup topology to enable the one or more peers to deliver the media to the respectively registered subscribers affiliated to the talkgroup.

Abstract: A method for indicating availability of outbound RF resources (ORFRs) of peer base stations is provided that uses peer busy indicator (PBI) messages transmitted from one peer base station to other peer base stations.

Abstract: A method and apparatus is provided for communicating a group message packet among wireless communication devices (WCDs) over a wide area communication network that includes a first infrastructure device (ID), a second ID and a third ID. A first communication connection is established between an envoy packet duplicator module (EPDM) that is in communication range of a source wireless communication device (WCD) and a first envoy module implemented at the first ID that is in communication range of a first destination WCD. The EPDM is implemented at the third ID. The source WCD communicates a group message packet from the source WCD to a third envoy module implemented at the third ID, which forwards the group message packet to the EPDM. The EPDM generates a first copy of the group message packet destined for the first destination WCD, and communicates the first copy of the group message packet to the first envoy module.

Abstract: A method and apparatus is provided for establishing communication pathways between infrastructure devices in a wide area communication network prior to transmission of a group message packet by a source wireless communication device (WCD). In one implementation, the infrastructure devices (IDs) can include a home ID of the source WCD, a first ID and a second ID. A home steward module (HSM) of the source WCD generates a distribution list (DL) for communications from the source WCD to a first communication group (CG), and communicates it to an envoy packet duplicator module (EPDM) located at the first ID. The first CG includes, for example, a first destination WCD. A first network socket of the EPDM is communicated from the HSM to a second envoy module (located at the second ID) for the first destination WCD. The HSM maps a second network socket for the second envoy module to an identifier of the first destination WCD, and communicates this mapping to the EPDM.

Abstract: A method for subscriber registration and affiliation in a peer to peer wide area network is provided. The peer to peer wide area network includes at least one Subscriber and a plurality of Peers. The method includes: communicating a registration and affiliation message including a Subscriber Registration Affiliation Index from a Subscriber to a Peer of the plurality of Peers; routing a registration and affiliation update message including a Peer Registration Affiliation Index equal to the received Subscriber Registration Affiliation Index from the Peer to other Peers of the plurality of Peers; comparing the received Peer Registration Affiliation Index with one or more other received Peer Registration Affiliation Indexes by each of the plurality of Peers; and selecting by each of the plurality of Peers a Peer Registration Affiliation for the Subscriber corresponding to a highest value Peer Registration Affiliation Index.

Abstract: A method for synchronizing media reproduction across heterogeneous networks is presented. The networks include end-to-end IP broadband and narrowband simulcast networks that contain broadband and narrowband devices associated with a common communications group. A controller in the networks determines delay times for reproduction of a media stream across devices in the networks and establishes the longest delay time. The longest delay time is used to calculate appropriate transmission and reproduction timestamps to permit the devices to reproduce the provided media stream in synchronization. Narrowband base stations repeat the media stream at the time specified by a transmission timestamp, and broadband end devices reproduce the media stream at the time specified by a reproduction timestamp. By synchronizing the presentation time, the devices present the media at substantially the same time and are granted fair rights to communicate with one another.

Abstract: Distributed DNS in a wireless communication network comprising broadcasting by a first node a request message to a second node is disclosed. The request message comprises a hostname of the second node. The first node forwards the request message to the second node through intermediate nodes in the wireless communication network and the second node transmits a response message to the first node. The response message comprises a MAC address of the second node.

Abstract: A method and system for peer to peer wide area network communication is provided. A peer in the network receives one or more media and one or more associated control signaling from any one of a plurality of Logical Media/Control Channels, wherein each Logical Media/Control Channel is associated with a Transport Resource on a base station; formats the media into a Formatted Media Packet; formats the control signaling into an Internet Peer to Peer Control Signaling; concatenates the Formatted Media with the Internet-Peer to Peer Control Signaling to form a Concatenated Packet comprising an Internet-Peer to Peer Control Signaling and a Media Packet; duplicates the Concatenated Packet, thereby forming a duplicated Concatenated Packet comprising at least one of a unicast packet and a multicast packet; and transmits the duplicated Concatenated Packets via the wide area network.

Abstract: A method for providing a mobile device in a packet data network access to a channelized network is disclosed. At a gateway between the two networks, a first channelized network message that is encapsulated in a first IP data packet from the packet data network is received. The first channelized network message is retrieved and reformatted for sending over the channelized network. The gateway then receives a second channelized network message from the channelized network. An identifier of a mobile device associated with the second channelized network message is retrieved and an IP address for the identified mobile device is determined. Then, the gateway encapsulates the second channelized network message into a second IP data packet and sends the encapsulated second channelized network message to the identified mobile device in the packet data network.

Abstract: Methods for delivery of multicast packets in a wireless communication system are disclosed. The methods comprise transmitting a contention free period initiation signal from an access point to the station, transmitting broadcast packets from the access point to the station, transmitting multicast packets from the access point to the station and holding the multicast packets in storage after the transmission, transmitting a contention free period end signal from the access point to the station, determining if a negative acknowledgement message has been received, retransmitting the multicast packets in response to receiving a negative acknowledgment message, and eliminating the multicast packets at a next beacon interval.

Abstract: A method and system for wireless data transmission between at least three stations use multiple frequency bands for simultaneous channel communications. The method includes transmitting a Request To Send (RTS) packet from a first station to an intermediate second station over a first frequency band. Two Clear To Send (CTS) packets, which CTS packets include transmission timing information, are then transmitted from the second station simultaneously both to the first station and to a third station. The CTS packet sent to the first station is transmitted over the first frequency band and the CTS packet sent to the third station is transmitted over a second frequency band. A data packet from the first station is then transmitted to the second station. The third station suspends, based on the transmission timing information included in the CTS packets, any unicast transmission to the second station during the transmission of the data packet from the first station to the second station.

Abstract: The present invention allows a single access point (“AP”; 100) to support a plurality of devices (102, 104) operating on different frequency bands. During a first period of time, the AP initiates a contention free period at a first frequency. The AP switches from the first frequency to a second frequency, and communicates with devices operating at the second frequency. Periodically during the first period of time, the AP temporarily ceases communication with devices operating at the second frequency to initiate a contention free period at the second frequency, switch from the second frequency to the first frequency, initiate another contention free period at the first frequency, and switch from the first frequency back to the second frequency.

Abstract: In an outbound transmission (300), an address of a first subscriber unit assigned to transmit in a first inbound slot is identified. With one bit in the outbound transmission (300), an additional inbound slot the first subscriber unit is assigned to transmit is identified.

Abstract: Disclosed are methods for adjustment values. In one embodiment, a cumulative adjustment value is provided in memory, an inbound signal is transmitted to a base station during a random access opportunity, and a relative adjustment value is received from the base station. Then, the relative adjustment value is summed with the cumulative adjustment value to create a new cumulative adjustment value which is stored in the memory. Finally, a subsequent inbound signal is transmitted using the new cumulative adjustment value during a reserved access opportunity.

Abstract: Methods for sequencing datagram transmissions are disclosed, including, receiving an unqueued segment to be enqueued in a queue. The queue comprises at least one segment. Determining a priority level and a number of attempted transmissions for the unqueued segment (100). If the unqueued segment is enqueued in front of a segment belonging to a datagram in the queue, and at least one segment belonging to the datagram has been transmitted before all the segments belonging to the datagram have been transmitted, at least one of the following functions is performed: discarding any remaining segments belonging to the datagram in the queue, transmitting any remaining segments belonging to the datagram in the queue, and re-enqueuing segments belonging to the datagram at the same location in the queue as the partially transmitted datagram, but with a different identifier.

Abstract: Encryption synchronization (e-sync) is maintained between a transmitter (104) and one or more receivers (102) in a multi-modulation TDM system (100) where information is communicated in slots (402) comprising a slot header (404) and one or more data blocks (406), and wherein the data blocks are eligible to be encoded at different modulation rates thereby creating a likelihood of different numbers of blocks in different slots. The receiver and transmitter employ respective encryption elements (200, 300) comprising e-sync shifter elements (202, 302) and encryption algorithm blocks (204, 304). The e-sync shifter element provides an e-sync signal defining an encryption state vector to the encryption algorithm block and is operable to advance the encryption state vector (in the case of the receiver) according to a number of received bits plus a variable number of bits.

Abstract: Disclosed is a method for performing handoff in a communication system of access points and a mobile station, where the mobile station is associated with a first access point. The first access point receives a first transmission at a first signal quality from the mobile station and receives a second transmission that indicates a second signal quality at which a second access point is receiving transmissions from the mobile station. The first access point compares the first signal quality with the second signal quality and when the second signal quality is greater than the first signal quality, the first access point signals the second access point to initiate a handoff with the mobile station. The second access point responds by sending a disassociation message to the mobile station to disassociate with the first access point, wherein the disassociation message is addressed as if it originated from the first access point.