Abstract:
The invention relates to methods of using a trainable software module used in the handover procedure employing the location based information for the self optimization of wireless communication networks, in particular for the self optimization of cellular mobile networks. Embodiments of the invention address the problems of radio link failures and rapid handovers immediately after transferring a wireless appliance from one base station apparatus to the other at certain cell border locations by evaluating which base station apparatus a wireless appliance should have its wireless connection transferred to using either a database or a trainable software module.
Abstract:
The invention relates to a method comprising the following steps:—measuring (S1) a traffic load;—determining (S2), if the traffic load is lower than a first threshold;—decreasing (S3) a maximum used output load of an amplifier of the base station, if the traffic load is lower than the first;—adjusting (S4) an operation point (102; 104; 106; 108; 112; 114; 116; 118; 124) of the amplifier, if the traffic load is lower than the first threshold;—determining (S2), if the traffic load is higher than a second threshold;—increasing (S5) the maximum used output load of the amplifier, if the traffic load is higher than the second threshold; and—adjusting (S4) the operation point of the amplifier, if the traffic load is higher than the second threshold.
Abstract:
The present invention relates to a method for acquiring radio measurements in a mobile communication system. In accordance with one embodiment of the invention, the method comprises the steps of.—within a serving cell (A) operated by a radio access node (eNBA) and serving a particular user equipment (UEX), sending measurement control information (meas_ctrl_info) from said radio access node to said particular user equipment whereby said particular user equipment is configured to perform radio measurements,—within a further serving cell (B) operated by a further radio access node (eNBB) and subsequently serving said particular user equipment, sending a measurement report (meas_report) from said particular user equipment to said further radio access node comprising measurement data (meas_data) as configured by said serving cell and a cell identifier (PCIA) of said serving cell,—transferring said measurement data from said further radio access node back to said radio access node. The present invention also relates to a user equipment and to a radio access node operable to form part of a mobile communication system.
Abstract:
A computer implemented method of operating a base station of a wireless communication network, wherein the method comprises: comparing a number of missing context release messages (108) with a first criterion; comparing the error rate of connection reestablishment messages (112) with a second criterion; executing a cell global identity search algorithm (110) if at least one of the first and the second criterion is fulfilled, wherein the cell global identity of at least one cell with the physical cell identity of the cell where the criterion was fulfilled is requested via an automatic neighbour relation measurement, and wherein a conflict of physical cell identities is detected and reported to an information algorithm (116) when for the physical cell identity at least two cell global identities are found; an information algorithm for informing a central network element (118) and/or at least one base station (120) of the mobile communication network about a conflict of physical cell identities when a conflict of physical cell identities is reported to the information algorithm; and initiating a reassignment of at least one physical cell identity.
Abstract:
The invention relates to methods of using a trainable software module used in the handover procedure employing the location based information for the self optimization of wireless communication networks, in particular for the self optimization of cellular mobile networks. Embodiments of the invention address the problems of radio link failures and rapid handovers immediately after transferring a wireless appliance from one base station apparatus to the other at certain cell border locations by evaluating which base station apparatus a wireless appliance should have its wireless connection transferred to using either a database or a trainable software module.
Abstract:
A method for taking a handover decision in a cellular communications system, wherein a communications network detects a need for initiating a handover for at least one mobile device from a source cell to a selected target cell, and further calculates a virtual traffic load indicator for the source cell after a virtual handover execution of the mobile device from said source cell to said target cell, calculates a virtual traffic load indicator for the target cell after a virtual handover execution of the mobile device from said source cell to said target cell, compares the calculated virtual traffic load indicators, and takes a decision to execute or not to execute said handover according to said comparison.
Abstract:
The invention relates to a method of communicating in a mobile telecommunication network (100; 200), the mobile telecommunication network comprising a plurality of cells (102; 104; 106), wherein resource blocks are used for transmitting data in the mobile telecommunication network, and wherein the method comprises:—dividing (S2) a resource into at least a first plurality of resource blocks and a second plurality of resource blocks, wherein the resource blocks of the first plurality do not overlap with the resource bocks of the second plurality;—assigning (S3) the first plurality of resource blocks to a first group of cells and assigning the second plurality of resource blocks to a second group of cells;—scheduling (S4) first data transmissions in the first group of cells on the first plurality of resource blocks;—scheduling (S5) second data transmissions in the second group of cells on the second plurality of resource blocks;—scheduling (S6) third data transmissions in the first group of cells on the second plurality of resource blocks, when all resource blocks of the first plurality are already used for data transmissions; and—scheduling (S7) fourth data transmissions in the second group of cells on the first plurality of resource blocks, when all resource blocks of the second plurality are already used for data transmissions.
Abstract:
The invention relates to a method comprising the following steps:—measuring (S1) a traffic load;—determining (S2), if the traffic load is lower than a first threshold;—decreasing (S3) a maximum used output load of an amplifier of the base station, if the traffic load is lower than the first;—adjusting (S4) an operation point (102; 104; 106; 108; 112; 114; 116; 118; 124) of the amplifier, if the traffic load is lower than the first threshold;—determining (S2), if the traffic load is higher than a second threshold;—increasing (S5) the maximum used output load of the amplifier, if the traffic load is higher than the second threshold; and—adjusting (S4) the operation point of the amplifier, if the traffic load is higher than the second threshold.
Abstract:
The invention concerns a method for a handover procedure of a user terminal (UE) on radio interfaces from a source base station (SBS) to a target base station (TBS) whereby the target base station (TBS) sends out user data to the user terminal (UE) before reception of a message indicating the termination of the handover procedure (HO Complete), the user terminal (UE) uses an uplink feedback for sending at least one message (Feedback) associated to the downlink transmission of said user data to the target base station (TBS), and the target base station (TBS) uses said at least one message (Feedback) associated to the downlink transmission of said user data as an indication of the presence of the user terminal (UE) within the range of the target base station (TBS), a base station (BS1-BS8) and a network (CN) therefor.
Abstract:
A computer implemented method of operating a base station of a wireless communication network, wherein the method comprises: comparing a number of missing context release messages (108) with a first criterion; comparing the error rate of connection reestablishment messages (112) with a second criterion; executing a cell global identity search algorithm (110) if at least one of the first and the second criterion is fulfilled, wherein the cell global identity of at least one cell with the physical cell identity of the cell where the criterion was fulfilled is requested via an automatic neighbour relation measurement, and wherein a conflict of physical cell identities is detected and reported to an information algorithm (116) when for the physical cell identity at least two cell global identities are found; an information algorithm for informing a central network element (118) and/or at least one base station (120) of the mobile communication network about a conflict of physical cell identities when a conflict of physical cell identities is reported to the information algorithm; and initiating a reassignment of at least one physical cell identity.