741 results about "Access stratum" patented technology

A method and system that enhances the existing access barring mechanism as specified in the current 3GPP specification is disclosed. The method disclosed provides enhancing the access barring mechanism to accommodate application level barring between the User equipment (UE) and the network. The method disclosed individually restricts or permits access of network to every requesting application on the UE, based on granular category of the application and priority levels of the application within the granular category. The method disclosed also specifies handling of back-off timers; reject cause values and Access Point Name (APN) configuration by Access Stratum (AS) and Non Access Stratum (NAS) layer to support application level barring of UEs using the enhanced access barring mechanism. The enhanced access barring mechanism enables providing service to applications independent of other barred applications or priorities. The method disclosed provides a mechanism for access control for connected mode UEs.

The invention relates to a wireless intelligent sensor network system for monitoring states of intelligent substation devices. The system is overall divided into a transformer substation level state monitoring system and a dispatching center level state monitoring system, the transformer substation level state monitoring system is divided into a sensing layer, an accessing layer and an application layer, an intelligent sensor on the sensing layer is responsible for collecting image and scalar data, and transmitting information to a monitoring center platform on the application layer through the accessing layer, and key information is transmitted to a dispatching center monitor integration platform through an electric power data communication network. A self-organization and self-recovery wireless substation device monitoring network is established to replace traditional wired ways, so that hierarchical distribution co-processing of data is achieved, communication load balancing capacity of the monitoring network is improved, wiring difficulties of installation are reduced, installation costs of transformation and upgrade of the substation devices are reduced, flexibility and use ratio of the monitoring network system are enhanced, overall assessment of operation conditions of the substation devices is enhanced, and fault hidden dangers of the devices can be timely found and eliminated.

The embodiment of the invention provides a method for security negotiation when switching is performed among different wireless access technologies, and the device thereof. The method mainly comprises that the security information of an NAS (non access stratum) and an AS (access stratum) which are selected by a target system is included in a transparent container when the terminal performs switching among different wireless access technologies; the content in the transparent container is transmitted to the terminal, and the terminal performs security negotiation according to the content in the transparent container and the target system. The device mainly comprises an eNB (eNB) equipment and a resource access network equipment. Through the invention, when the foreign system is switched to the LTE (long term evolution) system at the terminal, the terminal can obtain the parameter information of the cryptographic keys of the NAS and the AS selected by the LTE system, and performs security negotiation with LTE system.

The present invention discloses as synchronization method of a layered wireless access system, which is applied to the layered wireless access system including an access point management unit located in an access layer and its linked access points. The access point management unit has a timing server, each access point having a timing client. The timing server generates timing information and distributes it to the timing client of each linked access point, and the timing client recovers the timing information as a local timing reference signal. The method may implement clock synchronization between the access point management unit and the access points to ensure the normal operation of the system. The present invention also provides network management, scheduling, frequency assignment and flow control methods based on the layered wireless access system.

A method and system for providing a continued service to user equipment (UE) under overload conditions is disclosed. A primary network undertakes a protective measure under unable to serve conditions by commanding a change in the UE network access behavior so that the UE can move to the secondary PLMN. After receiving the indication from the primary network, the UE connects to the secondary network and continues to obtain the services from the secondary network. The secondary PLMN ID can be sent to the UE in system information. Further, the information like overload indication, secondary PLMN ID and the time for which the UE can obtain the services from the secondary PLMN ID can be sent to individual UEs over dedicated messages either on an Access Stratum (AS) message or over a Non Access Stratum (NAS) message.

The present invention relates to a method and apparatus for efficiently controlling access for system load adjustment in mobile communication systems. In a wireless communication system according to one embodiment, the method for transmitting and receiving data by a terminal including a user equipment (UE) non access stratum (NAS) and a UE access stratum (AS) includes the steps of: receiving by the UE AE, information including emergency call-related information which includes barring information by type for the emergency call, from a base station; transmitting, by the UE NAS, a service request for the emergency call to the UE AS; and determining, by the UE AS, whether to bar the service request on the basis of emergency call-related information. According to one embodiment, during the emergency call transmission, network congestion can be easily controlled by enabling various types of emergency calls to be transmitted, and enabling access to be barred information according to the situation of a communication network and types of emergency calls. Also, even when a specific type of emergency call is barred from access, the terminal can change to another type of emergency call and try for access. Therefore, it is effective in that an emergency call can be transmitted in various schemes even in a state where the network is congested.

A method, a system and an apparatus can be used for transmitting data in a CA manner. A first base station currently serving a user equipment (UE), creates EPS bearers under different component carriers CC Groups for the UE. The UE sets different access stratum entities corresponding to the CC Groups to process data in the process of creating the EPS bearers. The UE determines, when transmitting or receiving data, a corresponding CC Group according to an EPS bearer that bears the data. An access stratum entity corresponding to the CC Group processes the data that needs to be transmitted or received, a site is a first base station currently serving the UE or a second base station currently serving the UE.