Patent application number | Description | Published |
20120088498 | COVERAGE HOLE DETECTION IN CELLULAR WIRELESS NETWORK - An automated coverage hole detection (CHD) method based on modifying the setting of a specific parameter of a UE in, e.g., an LTE-based cellular wireless network. Physical RLF events of the UEs, possibly indicative of a coverage hole, are monitored. At least some of the UEs in a given cell are selected for modifying their parameter setting. For UEs that do not have advanced logging and reporting capabilities upon the physical RLF, the existence of a coverage hole is detected by analyzing the correlation between the settings of a timer and the probability for the UE to transit to RRC_IDLE mode. The settings of the timer are systematically adjusted via eNB signalling to evaluate the characteristics of the observed RLFs. | 04-12-2012 |
20120184280 | COVERAGE HOLE COMPENSATION IN A CELLULAR WIRELESS NETWORK - A method for use in providing coverage for at least part of a coverage hole in a first cell or cell sector in a cellular wireless network, in which method a second cell or cell sector is selected, from a group of cells or cell sectors in the cellular wireless network which neighbour the first cell or cell sector, to adapt its coverage so as to cover at least part of the coverage hole in the first cell or cell sector, the method including carrying out an identification process using data relating to a cell or cell sector in the group to identify a cell or cell sector suitable for selection as the second cell or cell sector, the identification process being carried out on one or more cells or cell sectors in the group in turn. | 07-19-2012 |
20130005385 | RE-SELECTING NETWORK PARAMETERS IN A CELLULAR WIRELESS NETWORK - A value of a parameter which affects network performance or operation of a cell in a wireless network is re-selected by: storing an indicator, representing the performance and/or operation of the network, and a criterion to be met by the indicator when the value of the parameter has been re-selected; receiving data relating to the performance or operation of the network, and deriving therefrom statistical data relating to said indicator; storing that statistical data; when the value of the parameter is to be re-selected, obtaining at least two different solutions for the value of the parameter to be re-selected; using said statistical data to determine which of the solutions obtained most satisfactorily meets said criterion for the indicator; and selecting that solution for implementation on the network. | 01-03-2013 |
20130121155 | METHOD AND APPARATUS FOR CHANGING BETWEEN TRANSMISSION STATES IN A COMMUNICATION SYSTEM - A controller for use in a wireless telecommunications system, the telecommunications system including one or more base stations, the one or more base stations being operable to wirelessly transmit data to user equipments in a first transmission state having a first capacity and in a second transmission state having a second, higher, capacity, the one or more base stations also being operable to change between transmission states in response to a transmission state change instruction from the controller, the controller comprising a transmission state management unit operable to apply a threshold mechanism to a value representing current data load, and if the threshold mechanism is satisfied, to issue a transmission state change instruction to change between the two transmission states, wherein a transition point of the threshold mechanism for a transition from the first to the second transmission state is set independently from a transition point for a transition from the second to the first transmission state. | 05-16-2013 |
20130130690 | HANDOVER PROCEDURES AND SIGNALLING FOR PLANNED CELL OUTAGE IN WIRELESS CELLULAR NETWORKS - A method of controlling handover in wireless cellular networks of user equipment in a first cell unit which is to be disabled to a second cell unit which is to provide extended coverage for the, or part of the, first cell unit, where the cell unit of the first and second cell units is a cell or a cell sector, including selecting a part of the signal bandwidth or time-frequency resource units, previously designated for use in normal operation by the second cell unit, which does not overlap with that to be used by the first cell unit during the handover; and designating the selected part for use by the user equipment to be handed over from the first cell unit. | 05-23-2013 |
20130148600 | CHANNEL STATE FEEDBACK FOR MULTI-CELL MIMO - A method is disclosed which is intended for use in multiple-input multiple-output wireless communication systems which have a plurality of adjacent cells (cell A, cell B, cell C, cell D), each containing one or more base stations which co-operatively transmit signals to, and receive signals transmitted from, a user equipment (UE). The user equipment is operable to feed back to the relevant base station(s) CSI reports relating to channel(s) between the relevant base station(s) and the users, the base stations are operable to adapt signals for transmission to users, based on the fed back channel state information. The method involves the UE being configured to select at least one cell to be the subject of a CSI report, and to send the CSI report with an indication of the subject cell(s). Feedback overhead on the uplink is reduced when many cells co-operate in transmission to the user equipment. | 06-13-2013 |
20130258890 | WIRELESS COMMUNICATION METHOD FOR MONITORING A COMMUNICATION INTERFACE BETWEEN ACCESS NODES - A wireless communication method and a wireless communication system includes a user equipment and a cooperating set of access nodes, each access node being operable to wirelessly exchange data and/or signalling information with the user equipment, the cooperating set participating directly or indirectly in the exchange with the user equipment in accordance with an exchange scheme, the cooperating set includes at least a first access node, the first access node being interconnected by an interface with a second access node. | 10-03-2013 |
20150181498 | Handover With Mobile Relays - A method to provide mobility support of UEs ( | 06-25-2015 |