Abstract:
PROBLEM TO BE SOLVED: To provide a radio communications device capable of handing over a call established by one network to another network without renouncing the call. SOLUTION: A radio communications device is arranged to communicate time divided signals over first and second time discontinuous systems having first and second frame structures respectively. In such a radio communications device, a multi-mode block 120 switches between communicating signals 60 over a first network 40 during time periods of the first frame structure and communicating signals 70 over a second network 50 during time periods of the second frame structure. Hence over a given period of time, the device simultaneously communicates time divided signals over the first and second networks. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
Coordination among mobile stations enables a terminal device (114) to establish a most appropriate wireless network connection. According to the present invention, a connection request, including network connectivity requirements, is communicated from the terminal device (114) to a first mobile station (116). The first mobile station (116) then transmits the network connectivity requirements to a second mobile station (117-119) that is also capable of establishing a wireless network connection. A determination based in part or in whole on the network connectivity requirements is then made at one of the first and second mobile stations (116 - - 119) which station can provide a most appropriate wireless network connection. A network connection is then established through one of the first and second mobile stations (116 -- 119) based on the determination of which of the first and second mobile stations (116 -- 119) can provide the most appropriate wireless network connection.
Abstract:
An apparatus, such as a network element (112), for use in a system that communicates with a multimode receiving device (110), employs an information gating buffer (400) that is operably coupled to a first wireless system transmitter (404) and receives information to be transmitted by the first wireless system transmitter (404). A synchronization controller (402), operably coupled to the information gating buffer (400) receives synchronization information (132) from a second wireless system using a second wireless system receiver circuit (130), and uses the timing synchronization information (132) to control the information gating buffer (400) to gate broadcast information for transmission from a first wireless system transmission circuit (128) to the multimode receiving device (110). A method includes receiving (200) timing synchronization information from the first wireless system, and using (204) the timing synchronization information to gate the transmission of information transmitted from the second wireless system to the multimode receiving device.
Abstract:
A method and apparatus determines a location of a wireless device (102) by obtaining broadcast system based location information (130) and cellular system based location information (125). Broadcast system based location information (130) may be, for example, data representing the location of an event that is sent by a broadcast system (140, 160). Cellular system based location information (125) may be, for example, data representing the location of a wireless device (102). A comparison between the broadcast based location information (130) and cellular system based location information (125) is made to determine if they are suitably correlated. In one embodiment, if the event and wireless device are close enough in proximity, maps based on the broadcast based location information and the cellular system based location information are visually superimposed for a user to view.
Abstract:
In an information circuit, it is necessary to ensure that all devices forming the information circuit are authenticated. The invention provides a method and apparatus for securely authenticating the devices forming the information circuit, the apparatus comprising session managers (900, 908, 916) for managing a service record (924, 926, 930) corresponding to a service. The session managers (900, 908, 916) are also able to manage a partner identify record (928, 932, 934, 936, 938, 940) corresponding to a partner device. Security managers (902, 910, 918) are also provided to manage authentication of devices.
Abstract:
A method and apparatus determines a location of a wireless device (102) by obtaining broadcast system based location information (130) and cellular system based location information (125). Broadcast system based location information (130) may be, for example, data representing the location of an event that is sent by a broadcast system (140, 160). Cellular system based location information (125) may be, for example, data representing the location of a wireless device (102). A comparison between the broadcast based location information (130) and cellular system based location information (125) is made to determine if they are suitably correlated. In one embodiment, if the event and wireless device are close enough in proximity, maps based on the broadcast based location information and the cellular system based location information are visually superimposed for a user to view.
Abstract:
A communication system (100), comprising a first communication unit (112) communicating (118) with a second communication unit (122), said first communication unit (112) transmitting to said second communication unit a preamble (516) prior to a message, wherein the preamble is a concatenation of signals, said second communication unit receives and decodes the preamble (516) and compares the received concatenated signals with know pre-determined concatenated signals to determine whether an error has occurred in said preamble (516) or said first message.This enables a system employing the FAUSCH concept to carry more information than a simple request for a channel. For example, it could include the data rate of the required channel. It also allows an extra degree of flexibility when designing the protocols. It allows forward error correction to be applied to the channel. Hence, the receiver can detect and correct some transmission errors.