340 results about "Cell Broadcast" patented technology

This invention provides for the use of an index message in a Cell Broadcast Service. An index message is considered to be a special type of Cell Broadcast message which contains general information about actual broadcast messages. The index message is transmitted in a predetermined logical S-BCCH subchannel, and contains information elements such as (a) message overviews or summaries for each cell broadcast message, (b) information concerning emergency messages, (c) information concerning the language used in different broadcast messages, (d) an alphanumeric broadcast domain operator name and a specific operator greeting, (e) information concerning changes in broadcast messages, and (f) information concerning subchannels.

Load redistribution and other benefits may be achieved by dynamically distributing or “steering” idle mobile stations to a particular cell or area. For example, idle mobile stations may be steered from a loaded cell to less loaded cells by changing one or more cell broadcast parameters.

This invention provides for the use of an index message in a Cell Broadcast Service. An index message is considered to be a special type of Cell Broadcast message which contains general information about actual broadcast messages. The index message is transmitted in a predetermined logical S-BCCH subchannel, and contains information elements such as (a) message overviews or summaries for each cell broadcast message, (b) information concerning emergency messages, (c) information concerning the language used in different broadcast messages, (d) an alphanumeric broadcast domain operator name and a specific operator greeting, (e) information concerning changes in broadcast messages, and (f) information concerning subchannels.

In a network having multiple wireless transmitters, a mobile device operating with the network may be assigned one or more wireless transmitters as a virtual cell. Transmissions to the mobile device may be broadcast from several cells simultaneously, so that the mobile device will receive the transmissions in any of the areas covered by the cells. When the network determines that the mobile device is moving out of one cell area and into another, the virtual cell may move as well. The virtual cell may consist of one or many areas covered by a wireless network, and may have a shape that is determined by geography, trajectory, wireless coverage, or other factors.

A system and method for providing a message broadcast service using an open API is provided, which allows a third party information provider to easily broadcast messages to the general public in a specific service area using a Cell Broadcast Service (CBS) of a mobile communication system. A message broadcast application server provides a user interface for composing a broadcast message and defining a service area to a third party information provider. When a broadcast message transmission request is received from the third party information provider through the user interface, a broadcast message transmission request command, a broadcast message transmission request cancellation command, or a status query message is created according to the message broadcast service request, and is then processed by a Cell Broadcast Center (CBC) in the mobile communication system through an open API of a Parlay gateway.

The invention relates to an implementation method of PDCCH (Physical Downlink Control Channel) total blindness detection in an LTE (Long Term Evolution) system. The method comprises the following steps of detecting power of a control domain CCE (Communication Control Equipment) by UE; dividing the control domain into an occupied area and a non-occupied area; respectively carrying out total blindness detection for the two different areas; after getting PDCCH candidate sets, i.e. the start CCE position and polymerization grade of CCE of two control domains of the two different areas, respectively carrying out CRC (Cyclic Redundancy Check) and DCI (Downlink Control Information) and RNTI (Radio Network Temporary Identity) information decoding, and descrambling and checking CRC by utilizing the RNTI; analyzing to obtain all system and UE dispatch control information in each subframe; saving an RNTI value for quick decoding next time. The method is not limited by unknown RNTI, and does not rely on extra known conditions. As long as a user receives cell broadcast information, i.e. the user successfully detects the PDCCH in any format in each subframe sent to all users , decoding can be carried out any time. A decoding process only relies on a data format standard regulated by a protocol, the RNTI information of the PDCCH received in each subframe can be analyzed, and by utilizing the RNTI information, a decoding manner is optimized, and the transmission performance is improved.

A wireless communication system (100) is configured to send signaling messages through a cell broadcast service (CBS). CBS message pages used to transport signaling messages are identified by assigned message identifiers. Mobile devices (114) within the communication system (100) recognize the CBS messages transporting signaling messages by the message identifiers and pass the signaling messages to an appropriate application or control program module. The message identifier may be used to specify the application or control program module to process the signaling message. The signaling messages transported by the CBS may be used in controlling a multicasting or broadcasting service. Duplicate copies of the CBS message pages may be transmitted and then buffered at the mobile device (114) as they are received until all parts of the signaling message have been received.

Apparatus (58), and an associated method, for facilitating delivery of network-specific dialing codes to a mobile node (12). Broadcasts of the network-specific dialing codes are scheduled by a broadcast scheduler 64 embodied at a cell broadcast center (38). Signals containing the codes are broadcast and detected by the mobile node (12), thereby to download the values to the mobile node. And, the downloaded dialing codes are indexed (88) together with the dialing codes normally used by the mobile node (12) to call the corresponding service centers (44). Subsequently, when a call is placed to a service center, the dialing codes are transposed (94), if necessary, to permit the call to a designated service center (44) to be completed.

A communications platform for mobile devices transmits data (such as alert messages) to at least one mobile device user. The platform comprises a server and an alert client responsible for receiving alert messages sent by the server. The alert client may also perform specific functions on a mobile communications device to insure that the alert message does not remain unnoticed or ignored. The platform may further comprise a cell broadcast service server to limit transmission of an alert message to mobile device users in a particular locality or localities.

The present invention discloses a transmitting method for community broadcasting service, which can reduce the data volume of CBS information on the radio network control part and at the Iub interface coming from the radio base station to save network resources, simplify thd dispatching course to increas the information volume of community broadcasting through laying a broadcast multibroadcasting physical channel which is parallel to auxiliary public control physical channel to be used for broadcasting service of communit clients. The control module of multi broadcasting will be set in the radio base station and the community broadcasting information will be transmitted to the corresponding radio base station first by radio network control part through the client face of Iub interface and then to dispatch the information to the control module of multi broadcasting corresponding to the community.

Load redistribution and other benefits may be achieved by dynamically distributing or “steering” idle mobile stations to a particular cell or area. For example, idle mobile stations may be steered from a loaded cell to less loaded cells by changing one or more cell broadcast parameters.

The invention discloses a method supporting user equipment (UE) handover. Public land mobile networks (PLMN) broadcasted in a target community are filtered through the UE, and a proper PLMN in the filtered PLMNs in a source base station is selected for the UE to finish the handover process. Or a content service gateway (CSG) which the UE can be access to is learned in the source base station, and an identification data (ID) list of all PLMNs broadcasted in the target community, a registered (r) PLMN and an equivalent (e) PLMN of the UE are learned, and therefore the proper PLMN for the UE is selected to finish the handover process. Or after learning the ID list of all the PLMNs broadcasted in the target community, the ID list of the PLMN where the ID in all the PLMNs broadcasted in the target community is the r-PLMN or the e-PLMN of the UE is informed to a multiple media expansion (MME). The PLMN for the UE is selected by the MME to finish the handover process. Or after learning the ID list of all the PLMNs broadcasted in the target community at present through the source base station, the MME is used to select the PLMNs, and the source base station is used to select the PLMN serving the UE to finish the handover process. Through utilization of the method supporting UE handover, failures in the handover process can be avoided, and continuity of businesses is guaranteed.