Abstract:
A method for providing push-to-talk (PTT) service between PTT enabled devices (102) and non-PTT enabled devices (116) is disclosed. First, the non-PTT enabled device is registered at a PTT interworking agent (110). Then, signaling data is received at an interface (110) in a first format. The signaling data includes an identifier corresponding to one or more destination phones. Next, the signaling data in the first format is converted to a second signaling protocol at the PTT interworking agent. The push-to-talk signaling information is sent to a push-to-talk server (106) and a destination address is located for each of the one or more phones associated with the signaling data. The signaling data is then routed to the one or more phones.
Abstract:
Methods and apparatus for providing a transmit signal strength message. According to one embodiment of the invention, a transmit signal strength message is generated (212) using a first cell based, at least in part, on transmit signal power levels of the first cell and a second cell, which is then sent (214) for broadcast through the first cell.
Abstract:
A display (202) is formed on an OLED layer (210) and at least one other layer formed of different display technology (212). At least one sensor (206 and/or 208) is used to determine a condition which impacts readability of the display (202). The different display layers are enabled and disabled in response to the sensed conditions to provide optimum viewing.
Abstract:
A method and apparatus for determining a scope of priority service in a communication system (100) in an emergency event is described. The method includes: at a network device (186) in the communication system: receiving (504) at least one emergency call; determining (508) at least one parameter associated with the at least one emergency call; determining (506, 516, 518) a scope of a priority service in the communication system based on the determined at least one parameter; and reserving (512, 520, 522) resources in the communication system based on the determined scope of priority service.
Abstract:
A sending device generates (204) a first and a second KMM, wherein the first KMM includes a first KEK and a KMM encryption key, and the second KMM includes a set of symmetric encryption keys. The sending device further encrypts (206) the set of symmetric encryption keys using the first KEK; encrypts (208) the first KEK and the KMM encryption key using a first public key of a receiving device; and encrypts (210) the second KMM using the KMM encryption key to generate an encrypted second KMM before sending (218) the first KMM and the encrypted second KMM to the receiving device. The receiving device decrypts the first KEK and the KMM encryption key using a first private key that corresponds to the first public key; and decrypts the encrypted second KMM using the KMM encryption key to obtain the encrypted set of symmetric keys.
Abstract:
A method and system enable robust and scalable propagation of trust between a first organization and a second organization, both operating in an ad hoc wireless communication network. The method includes establishing at a first member node of the first organization pair-wise trust with a first member node of the second organization using a predetermined inter-organizational trust establishment device (step 505). Next, the first member node of the first organization generates a credential for the second organization using the pair-wise trust (step 510). The credential is then distributed from the first member node of the first organization to a second member node of the first organization (step 515). The second member node of the first organization then establishes pair-wise trust with a second member node of the second organization using the credential received from the first member node of the first organization (step 520).
Abstract:
A system and method of navigating to a destination is provided. The method includes determining a target course for a moving target device using target positioning data and generating an intercept course using the target course and intercept positioning data received from an intercept device. The intercept course intersects the target course at a moving destination or fixed intercept destination. The target course and the intercept course are generated by the intercept device or a remote device which is remote from the intercept device
Abstract:
Credit based channel transmission scheduling (CBCTS) of packet data units (PDUs) on a downlink channel is provided based on priority, quantity, and timing efficiency. The CBCTS technique includes initializing a set of credit accounts with a set of credit values. Credit accounts are sorted to determine the account having the highest number of credits. An account is selected from the set having an associated PDU type that is ready for transmission and has a size that fits within a MAC block. The selected PDU is inserted into the MAC block. The cost associated with the inserted PDU is subtracted from the credits. The selected PDU size is subtracted from the MAC block size, and a determination is made as to whether there is free space remaining on the MAC block for insertion of additional PDUs. If so, another sort and search is performed prior to transmission on the downlink channel.
Abstract:
A node in a wireless communication system detects a requirement to discontinue communications on a primary channel. In response, the node sends a message to a plurality of nodes, which includes a reason for discontinuation of communications on the primary channel and availability of immediate operation of a secondary channel. The secondary channel is a channel the node was currently using for its communication. Another node receives a message including a requirement to discontinue communications on a primary channel and also the availability of immediate operation on a secondary channel. The receiving node detects the feasibility of moving the operation of its associated network to the secondary channel. When feasible, the node sends a message to other nodes to make the secondary channel its primary channel.
Abstract:
A method (150) and device (200) with enhanced poling management are described, to help lengthen the battery life of a mobile computing device running a plurality of applications in data communication with an application server. The method (150) includes the steps of: providing (155) a poling manager configured to receive for each of the plurality of applications a predetermined poling interval and tolerance window; monitoring (160) data communication activity of the mobile computing device; determining (165), for each of the plurality of running applications, the time elapsed since the previous synchronization; and synchronizing (170) the application if at least one of the following conditions occurs: the time elapsed since the previous synchronization is substantially equal to the predetermined poling interval for the application, and communication activity is detected, and the time elapsed since the previous synchronization is within the tolerance window for the application. By the use of intelligent poling management, such as synchronizing and running multiple applications together, substantial energy savings can be gained, by turning on the transceiver circuitry only when necessary and minimizing and/or eliminating unnecessary synchronizations.