Abstract:
Initiating a Packet Switched or IMS emergency call using a user equipment (UE). The UE includes a plurality of protocol layers. The plurality of protocol layers including an IMS sublayer, a non-access stratum (NAS) layer and an access stratum (AS) layer. The method includes generating an ATTACH REQUEST or PDN Connectivity request including an APN identifying an emergency APN using the UE. The ATTACH REQUEST has an attach type i.e. EPS emergency attach. The method includes retrieving the attach type of the ATTACH REQUEST using the NAS layer of the UE, and generating an RRC CONNECTION REQUEST. The RRC CONNECTION REQUEST includes an RRC establishment cause based upon the attach type of the attach request e.g. EPS emergency call, PS emergency, IMS emergency call, etc.
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A method for preventing random access by a mobile station with outdated system information including receiving system information earlier than a time at which the system information is effective, determining that a current time is within a new access blocking offset before the time at which the system information is effective, and delaying random access at least until the time at which the system information is effective.
Abstract:
A pre-registration phase (800) and a resource preparation phase (900) reduce latency when a user equipment (UE) (210) hands over from a non-3GPP radio access (220) such as WiMAX to an 3GPP radio access network (230) such as E-UTRAN. During a pre-registration phase (800), a Forward Attachment Function (260) receives a pre-attach request message (833) and creates (860) a 3GPP mobility management context for the UE (210) that is valid for E-UTRAN access. During a resource preparation phase (900), the mobility management context is transferred to a mobility management entity (MME) (240) and radio and transport resources are reserved for the UE (210) at the target E-UTRAN cell (230). When a handover is initiated (910) by either the UE or the non-3GPP network, the time-consuming authentication and authorization procedures that are performed during the process of pre- registration can be skipped. Additionally, radio and transport resources have already been assigned to the UE and thus do not have to be set-up when the handover executes.
Abstract:
A method and apparatus for interrupting a transmission of a multicast signal includes a common channel selector (106) coupled to a receiver (102) to receive common channel information (116) therefrom. A repetition value calculator (108) receives measurement occasion information (118) from the common channel selector (106) to calculate a repetition factor (120). A system frame number comparator (110) determines if a channel measurement occasion (128) should be performed based on the repetition factor (120), a common identifier (124) and a largest common channel transmission time interval (122). The method and apparatus further includes a measurement occasion generator (112) coupled to the system frame number comparator (110), wherein if a measurement occasion is to be performed, a measurement occasion command signal (126) is provided to the measurement occasion generator (112) and the measurement occasion generator generates the channel measurement occasion (128).
Abstract:
A method for a radiotelephone to scan for a higher priority (including home) public land mobile network (PLMN) without searching in all possible RATs and frequencies includes a first step of establishing (12) an inclusive list of all frequencies in all radio access technologies (RATs) in use by the higher priority or home public land mobile network. A next step includes camping (20) the radiotelephone on the higher priority or home PLMN. A next step includes obtaining (24) the inclusive list from the establishing step by the camped radiotelephone from the higher priority or home PLMN. Afterwards, when the radiotelephone roams to a lower priority visited PLMN, it can begin (32) scanning for the home (and higher priority) PLMN using only those frequencies from the inclusive list, thereby saving battery power.
Abstract:
A method for initiating a Packet Switched emergency call using a user equipment (UE) is presented. The UE includes a plurality of protocol layers. The plurality of protocol layers including an IMS sublayer, a non-access stratum (NAS) layer and an access stratum (AS) layer. The method includes generating an ATTACH REQUEST using the UE. The ATTACH REQUEST has an attach type. The method includes retrieving the attach type of the ATTACH REQUEST using the NAS layer of the UE, and generating an RRC CONNECTION REQUEST. The RRC CONNECTION REQUEST includes an RRC establishment cause based upon the attach type of the attach request.
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 wireless communication terminal (300) including a radio transceiver (320), and a radio link control entity (310) that re-initiates a radio link control reset procedure when the transceiver receives a message containing an instruction to change an uplink or downlink protocol data unit size during an ongoing radio link control reset procedure. For example, the radio access network may initiate an uplink or downlink PDU size change before terminal receives acknowledgement that a previously initiated radio link control reset procedure is complete. The radio link control entity restarts a radio link control reset timer upon re-initiating the radio link control reset procedure after re-establishing radio link control.
Abstract:
A system (100) and methods (400, 500) for alerting user equipment devices (116) in a wireless communication network (102) to broadcasts while limiting the amount of power that must be consumed in order to ascertain if the user equipment devices (116) have subscribed to the broadcasts are provided. A communication indicator (300) that is compatible with UMTS protocols and includes, in addition to paging indicators, one or more broadcast category indicator codes (304) is provided. Devices receiving the communication indicator (300) are able to ascertain based on the broadcast category indicator codes (304) whether there is a need to expend further power in determined whether they are subscribed to the broadcast.