摘要:
The invention relates to wireless communication networks, and to the way in which communication devices choose their transmission power when communicating with each other. More specifically, the invention relates to a method of controlling the transmission power of a first communication device in a wireless communications network based on the UMTS standard, the first communication device having established a HSDPA connection to a second communication device, whereby the absolute value of the difference between the HSDPA transmission power in a first transmission time interval (tti1) and the HSDPA transmission power in a subsequent second transmission time interval (tti2) is chosen to be smaller than a predetermined value (v). Furthermore, the invention relates to a node B which can carry out the method mentioned above, and power control means associated with said node B.
摘要:
A method of providing a multimedia multicast service in a digital wireless communication network, the network having a network controller for controlling of at least one base station, comprising establishing a single data stream from the network controller to the base station for transmitting of multimedia data, by means of a single lub link or transport bearer and establishing a separate communication link and a separate data queue for each user equipment in a radio cell of the base station which requests the multimedia data.
摘要:
A method of determining a bias parameter for a heterogeneous network including a small cell, a macro cell, and one or more user equipment (UEs), the small cell being underlaid with respect to the macro cell, includes determining, at a base station of the small cell, a loading state of the macro cell; and setting, at the base station, the bias parameter based on the determined loading state. A method of determining a cell border window (CBW) for the small cell, the small cell being underlaid with respect to the macro cell, the small cell having a plurality of attached UEs which are divided into inner cell UEs and border cell UEs, includes determining, at the base station, a difference value based on utilization values of the inner cell UEs and the border cell UEs; and adjusting the CBW based on the difference value and a threshold value.
摘要:
The invention relates to a method for performing a handover of a mobile device from a source cell to a target cell in a cellular wireless telecommunication network, the method comprising the following steps: configuring the mobile device to transmit a first handover trigger signal to the source cell, when a difference between a signal strength of the target cell and a signal strength of the source cell as measured by the mobile device is above a first threshold (105; determining (S1) if a cell traffic load in the source cell is above a cell traffic load threshold; if so, configuring the mobile device to transmit a second handover trigger signal to the source cell, when a difference between a signal strength of the target cell and a signal strength of the source cell as measured by the mobile device is above a second threshold (100), wherein the first threshold is larger than the second threshold.
摘要:
A handover method is provided, in which a measure of signal strength is obtained between a user terminal and each of one or more candidate cells, relative to signal strength between the user terminal and a source cell. For candidate cells, a threshold is set that depends on a measure of loading of the source cell and a measure of loading of the candidate cell. For the target cell, a particular candidate cell is identified for which the measure of signal strength exceeds the threshold set for that particular cell. The user terminal is connected to the target cell. In specific embodiments, the threshold for each candidate cell depends on a load differential between the source cell and the candidate cell.
摘要:
The present invention relates to a method for gaining channel quality information at a base station of a multi-carrier radio communication system having a plurality of orthogonal frequency sub-carriers.According to the present invention, the method comprises the steps of: measuring a Channel Frequency Response at a user terminal of said multi-carrier radio communication channel; extracting samples of said Channel Frequency Response represented in the frequency domain at a predefined oversampling factor; sending said samples on a signaling channel from said user terminal to said base station; performing a windowing operation on the received samples in the time domain; determining a channel quality information for each of said sub-carriers on a representation in the frequency domain of said received samples after windowing operation.
摘要:
The present invention relates to a telecommunication method in a wireless cellular telecommunication system having a radio network controller and a base station, where the method receives a number of orthogonal variable spreading factor codes from the radio network controller by the base station, evaluates a load situation by the base station, and in case the orthogonal variable spreading factor codes received from the radio network controller are insufficient for the load situation: requesting a change of the number of orthogonal variable spreading factor codes from the radio network controller by the base station.
摘要:
A method for controlling the flow of data between an RNC and a base station of a UMTS mobile communications system with HSDPA capability via an Iub interface, where an HS-DSCH Frame Protocol mechanism is implemented in the Iub interface to provide control and data services for the communication of HSDPA user data between the RNC and the base station, wherein a capacity overload control entity monitors information about actual Iub interface data transport flow, and when a determined Iub interface transport capacity value is reached, the data transport flow is reduced in the Iub interface.
摘要:
The present application describes embodiments of a method and apparatus for determining handover parameters in a wireless overlay network. One embodiment includes modifying a bias value used to determine when to handover user equipment between a macrocell and a femtocell that overlays the macrocell. The bias value is modified in response to a change in one or more handover frequencies associated with the user equipment. Handovers of user equipment are triggered when a sum of the bias value and a measured value of the femtocell signal strength exceed a measured value of the macrocell signal strength.
摘要:
The invention relates to a method for controlling the flow of data between an RNC (R) and a base station (BS) of a UMTS mobile communications system with HSDPA capability via an lub interface (I2), where an HS-DSCH Frame Protocol mechanism is implemented in the lub interface (I2) to provide control and data services for the communication of HSDPA user data between the RNC and the base station, wherein a capacity overload control entity (COCU) monitors information about actual lub interface data transport flow (IDF), and when a determined lub interface (I2) transport capacity value is reached, the data transport flow is reduced in the lub interface (I2).