Patent application number | Description | Published |
20090028085 | Method for providing measurement gaps - A method comprising interrupting the reception of a first transmission to receive a predetermined channel; determining from receipt of said predetermined channel first timing information associated with a second channel; and interrupting the reception of said first transmission at a time defined by said first timing information to receive said second channel. | 01-29-2009 |
20100220862 | Method, Apparatus And Computer Program Product For Providing Security During Handover Between A Packet-Switched Network And A Circuit-Switched Network - A method, apparatus and computer program product are provided to facilitate security in response to a handover from an initial network to a subsequent network, such as a handover between a packet-switched network and a circuit-switched network. The method, apparatus and computer program product may provide at least one security key for use in the subsequent network following handover from the initial network such that communications conducted via the subsequent network, including initial communications, may be secure. In order to provide at least one security key for use in the subsequent network, at least one security key of the initial network may be identified along with a nonce in response to a determination that a handover is to be made. The at least one security key of the subsequent network may then be determined based upon the at least one security key of the initial network and the nonce. | 09-02-2010 |
20110122801 | USER EQUIPMENT CAPABILITY BIASING - In accordance with the exemplary embodiments of the invention there is at least a method, apparatus, and executable computer program to perform operations including receiving at a user equipment information from a network access node, prioritizing capability information of the user equipment in accordance with the received information, and transmitting all or at least part of the prioritized capability information to the network access node. | 05-26-2011 |
20110274085 | Signaling radio bearer security handling for single radio voice call continuity operation - The exemplary embodiments of the invention provide at least a method, apparatus, and computer program to detect a single radio voice call continuity activation event indicating a handover of a user equipment between a packet switched domain and a circuit switched domain, consistent with a serving radio network subsystem relocation procedure, suspend control plane signaling radio bearers, reset the suspended signaling radio bearers, and resume the suspended signaling radio bearers in the domain handed over to, where resuming comprises protecting control plane signaling radio bearers of a domain handed over to using a same mapped security key that is used to cipher user plane radio access bearers in the domain handed over to. | 11-10-2011 |
20120202480 | Priority Measurement Rules For Channel Measurement Occasions - Based on the determined signal strength of a serving cell, a choice is made whether to utilize a cell-FACH measurement occasion for a lower priority neighbor cell search or for a higher priority neighbor cell search. The lower priority neighbor cell search is for maintaining wireless connectivity and the higher priority neighbor cell search is for accessing enhanced wireless service. In specific examples the search may be inter-frequency for frequency layers with higher or lower priority than a serving layer of the serving cell, or the search may be inter-RAT such as the lower priority GERAN search and a higher priority E-UTRAN search if the serving cell is WCDMA. In one example there are two thresholds for the signal strength, and if higher than both then the measurement occasion is used for an E-UTRAN search regardless of whether GERAN or inter-frequency neighbour cells have been configured for the UE practicing the invention. | 08-09-2012 |
20120207011 | METHOD AND APPARATUS FOR RESPONDING TO AN UNRECOVERABLE ERROR - A method, apparatus and computer product are provided that may respond to an unrecoverable error without initiating a cell update procedure. In an instance in which more than one connection is concurrently supported in either the circuit switched domain, the packet switched domain or both, the method, apparatus and computer program product may avoid interrupting or terminating the connection that did not experience the unrecoverable error. For example, in an instance in which the unrecoverable error occurred on a radio bearer for a data service connection, such as a packet switched data call, the method, apparatus and computer program product may address the unrecoverable error without disruption of a connection for a voice service, such as a circuit switched voice call. | 08-16-2012 |
20120252452 | Fast Reselection Between Different Radio Access Technology Networks - A user equipment UE determines that a neighbor cell is higher priority than a serving cell, measures neighbor cell signal strength in n>1 iterations, and analyzes them for reselecting from the serving cell to the neighbor cell. Each measurement iteration is spaced from one another by a time interval (e.g., 1 DRX) that is specific for the neighbor cell being higher priority. In various embodiments, the UE measures while in a Cell-PCH, URA-PCH or idle state/mode and the first iteration is taken at the first available measurement opportunity after transitioning to that state/mode. The UE reselects to the neighbor cell based on the analyzed signal strengths; in one embodiment the decision to reselect is without regard to signal quality of the serving cell; and in another the decision is without regard to whether a reselection condition remains satisfied for a specified time period T | 10-04-2012 |
20120252455 | Fast Reselection Between Different Radio Access Technology Networks - A user equipment UE determines that a neighbor cell is higher priority than a serving cell, measures neighbor cell signal strength in n>1 iterations, and analyzes them for reselecting from the serving cell to the neighbor cell. Each measurement iteration is spaced from one another by a time interval (e.g., 1 DRX) that is specific for the neighbor cell being higher priority. In various embodiments, the UE measures while in a Cell-PCH, URA-PCH or idle state/mode and the first iteration is taken at the first available measurement opportunity after transitioning to that state/mode. The UE reselects to the neighbor cell based on the analyzed signal strengths; in one embodiment the decision to reselect is without regard to signal quality of the serving cell; and in another the decision is without regard to whether a reselection condition remains satisfied for a specified time period T | 10-04-2012 |
20120315910 | System Information Cache - For each of a plurality of received system information SI a cache entry is stored in a SI cache of a user equipment UE, each including at least some of the received SI, a timestamp of when the SI was first stored, and at least some of the cache entries also have relevance data relating the respective cache entry to one or more other cache entries. While the UE is in a state such as a CELL-FACH state (no dedicated physical channel allocated to the UE), a cache entry is selected for at least one neighbor cell, and that cache entry is related by its relevance data to the cache entry of the serving cell or determined from its timestamp to be in close proximity to the serving cell. The UE then identifies the selected neighbor cell in an uplink message as a suitable candidate for multipoint communications with the UE. | 12-13-2012 |
20120315945 | SYSTEM INFORMATION CACHE - For each of a plurality of received system information SI a cache entry is stored in a SI cache of a user equipment UE, each including at least some of the received SI, a timestamp of when the SI was first stored, and at least some of the cache entries also have relevance data relating the respective cache entry to one or more other cache entries. While the UE is in a state such as a CELL-FACH state, a cache entry is selected for at least one neighbor cell, and that cache entry is related by its relevance data to the cache entry of the serving cell or determined from its timestamp to be in close proximity to the serving cell. The UE then identifies the selected neighbor cell in an uplink message as a suitable candidate for multipoint communications with the UE. | 12-13-2012 |
20120320879 | Fast Reselection Between Different Radio Access Technology Networks - A user equipment UE determines that a neighbor cell is higher priority than a serving cell, measures neighbor cell signal strength in n>1 iterations, and analyzes them for reselecting from the serving cell to the neighbor cell. Each measurement iteration is spaced from one another by a time interval (e.g., 1 DRX) that is specific for the neighbor cell being higher priority. In various embodiments, the UE measures while in a Cell-PCH, URA-PCH or idle state/mode and the first iteration is taken at the first available measurement opportunity after transitioning to that state/mode. The UE reselects to the neighbor cell based on the analyzed signal strengths; in one embodiment the decision to reselect is without regard to signal quality of the serving cell; and in another the decision is without regard to whether a reselection condition remains satisfied for a specified time period T | 12-20-2012 |
20130083646 | Methods and Apparatus for Managing Resource Access Attempts - Systems and techniques for management of network resource access attempts. In response to identifying that a radio bearer has failed, a radio resource associated with the radio bearer is released, either through request by a user equipment or direction by the network. Attempts at regaining access to the released radio bearer are inhibited during conditions recognized as potentially leading to excessively frequent unsuccessful attempts. Inhibition of attempts at regaining access to the released radio bearer may comprise imposing a backoff timer to inhibit reestablishing access to the released radio link for the duration specified by the backoff timer. | 04-04-2013 |