| Patent application number | Description | Published |
|---|
| 20080205312 | METHOD AND DEVICE FOR ESTABLISHING A SECURE ROUTE IN A WIRELESS NETWORK - A method for establishing a secure route in a wireless network as provided improves network efficiency. According to one aspect, the method includes receiving at a first node in the wireless network a route request message from a second node, where the second node and the first node have not been mutually authenticated. The route request message is then forwarded from the first node to a third node. A route reply message is then received at the first node from the third node. The first node is then mutually authenticated with the second node in response to receiving the route reply message at the first node. | 08-28-2008 |
| 20090116647 | METHOD FOR PROVIDING FAST SECURE HANDOFF IN A WIRELESS MESH NETWORK - Disclosed is a method for providing fast secure handoff in a wireless mesh network. The method comprises configuring multiple first level key holders (R0KHs) within a radio access network to which supplicants within the multi-hop wireless mesh network are capable of establishing a security association, configuring a common mobility domain identifier within the first level key holders of a mobility domain, and propagating identity of a first level key holder and the mobility domain identifier through the wireless mesh network to enable the supplicants within the mobility domain to perform fast secure handoff. | 05-07-2009 |
| 20090291704 | Method of Establishing Parallel Group Services Over Disparate Communication Networks - Users affiliated with a first narrowband talk group or participating in a narrowband talk group communication are able to establish a parallel communication group with the same users of the first talk group using alternate communication devices to enable transmission of multimedia over the disparate communication networks. One or more databases store and correlate information regarding the users of the narrowband talk group, as well as information regarding the user's communication devices and access technologies employed by the communication devices to determine the possible broadband groups available and an acceptable access technology to transmit the multimedia to the broadband group/data group users. The disparate network group manager informs the users of the narrowband talk group of the presence or availability of the parallel broadband group and establishes the parallel broadband group session when requested to do so by a user of the narrowband talk group. | 11-26-2009 |
| 20100023752 | METHOD AND DEVICE FOR TRANSMITTING GROUPCAST DATA IN A WIRELESS MESH COMMUNICATION NETWORK - A method for transmitting groupcast data in a wireless mesh communication network as provided improves security of groupcast data. The method comprises processing, at a supplicant node, authentication handshake data received from an authenticator node, wherein the supplicant node is a next-hop neighbor of the authenticator node away from a root node. The supplicant node then stores a group transient key (GTK) received from the authenticator node. Next, the supplicant node processes authentication handshake data received from a third node, wherein the third node is a next-hop neighbor of the supplicant node away from the root node. The GTK is then transmitted from the supplicant node to the third node. Encrypted groupcast data are then generated at the supplicant node by using the GTK to encrypt groupcast data received from the authenticator node. Finally, the encrypted groupcast data are transmitted from the supplicant node to the third node. | 01-28-2010 |
| 20110150219 | SYSTEM AND METHOD OF INCREASING ENCRYPTION SYNCHRONIZATION AVAILABILITY - Methods for increasing encryption synchronization availability include collecting encryption synchronization data from a first superframe received at a gateway. The encryption synchronization data is for decrypting media in a second superframe also received at the gateway. The encryption synchronization data from the first superframe is used to form a composite encryption synchronization codeword for decrypting media in a third superframe formed by the gateway, wherein the third superframe includes the composite encryption synchronization codeword and at least a portion of the media from the second superframe. The third superframe is sent to a receiving device so that media in the third superframe can be decrypted by the receiving device using the composite encryption synchronization codeword that is included in the same superframe as the media that is being decrypted. | 06-23-2011 |
| 20110151917 | METHOD AND APPARATUS FOR BRIDGING CALLS BETWEEN TWO DISPARATE PUSH-TO-TALK SYSTEMS - A PTT bridging gateway between a first PTT system and a second disparate PTT system: receives an invitation to a first client to join a first group call for a first group comprising multiple member clients on the first PTT system, wherein the first client is one of the member clients of the first group; determines that the first client is mapped to a second group comprising multiple member clients on the second PTT system; and initiates a second group call to the multiple member clients on the second PTT system. | 06-23-2011 |
