Abstract:
A broadcast channel, such as a broadcast control channel that carries a short message service, in a GSM/EDGE or similar communication system can be extended with additional timeslots. These additional timeslots can be pointed out in a tree structure, the root of which is in the SMS broadcast channel. The extended broadcast channel can be used for broadcast-like services provided under a multimedia broadcast/multicast service.
Abstract:
The present invention relates to an antenna arrangement for use in a wireless communication system, where the arrangement comprises at least two single-polarized antenna functions. Each antenna function is adapted for radiating an antenna radiation lobe pattern having a horizontal extension in an azimuth plane, and a vertical extension in an elevation plane, perpendicular to the azimuth plane. The antenna functions both have a first polarization in a first direction. In a second direction separated from the first direction, the second antenna function has a second polarization and the first antenna function has a third polarization, the second polarization and the third polarization being orthogonal to each other.
Abstract:
The present invention relates to a method for use in a user equipment (10), and relates to a user equipment (10) for enabling a serving base station (40) to estimate interference contribution in a network when scheduling resources for the use equipment. According to the method, the user equipment determines an amount of resources required to send data and the user equipment sends a report to it serving base station when the required amount of resources is greater than a threshold value. In the report, measurements performed by the user equipment are included. The report will assist the serving base station with its estimation of the degree of interference user equipments generates in the network, and hence the power and resources to assign.
Abstract:
In a mobile communication system having channels with different bandwidths, a channel bandwidth can be dynamically selected for transmitting data over a connection between a radio access network and a mobile station. According to the invention, a channel bandwidth and also a target for a data error rate for the transmission is selected based on a determined transmission need, i.e. a determined characteristics of the data to be transmitted and on a determined load of a communication resource, e.g. channel power and/or total carrier power used in a cell. By making it possible to dynamically select a data error rate, a connection can, by increasing the data error rate and consequently decreasing the channel power, carry on using a certain channel bandwidth even if at a first instance a load threshold level is achieved for the channel power or the total power used in the cell. Thereby, the capacity of the system can be increased, while at the same time the throughput over the connection is increased.
Abstract:
In a method of selecting an access network from among one or more access networks capable of providing service to a mobile communication terminal, measuring (S1), for at least two access networks, an end-to-end quality through the whole communication path between the terminal and a destination node, and selecting (S2) at least one access based on said measured end-to-end quality.
Abstract:
A method for selecting radio access system in a multi access system handling packet data services where a terminal can communicate with at least two different types of access systems. According to the invention the method comprises the steps of:—determining (S23) packet characteristics of each packet to be transmitted;—selecting (S31) one of the available accesses for the transmission of each packet, the selection being based on the determined packet characteristic for this specific packet; and—transmitting (S37) the packet through the selected access.
Abstract:
A method and apparatus provides for control of the quality of service for service groups by controlling the power of each service group. The carrier-to-interference requirements for which each service group achieves its minimum acceptable link quality is determined. The difference in carrier-to-interference requirements due to different requirements of fractions of satisfied users is compensated for. A power offset between the service group is determined using the compensated carrier-to-interference requirements.
Abstract:
A method for downlink power control in wireless communication systems is provided. In response to a transmitter power change request from a mobile terminal (110) over a wireless connection, a power control parameter is determined at network level based on connection-specific information indicating the degree of priority of the connection (DPIi). The power control parameter preferably relates to a maximum connection-specific transmitter power, a power step size and/or a quality target, and is used by the base station to distribute transmitter power (pi) to the connection.
Abstract:
Methods for downlink power control in wireless communication systems are provided. In response to a transmitter power change request from a mobile terminal (110) over a wireless connection, a base station (122) determines a power control parameter based on its current total transmitter power PDL. The power control parameter preferably relates to a maximum connection-specific transmitter power, a power step size and/or a power increase probability, and is used by the base station to distribute transmitter power pi to the connection.
Abstract:
The present invention pertains to the field of methods and apparatuses relating to radio communication; and in particular to the part of this field that concerns cellular radio communication. The present invention addresses mainly the problem of improving reliability and communication quality in a cellular radio communication system (1). According to the invention, it is determined whether one of an uplink (25) or a downlink (25) of a radio channel (23) is subject to a Rayleigh fading dip. If it is determined that one of the uplink (25) or the downlink (27) is subject to a Rayleigh fading dip, it is then determined whether it is necessary to execute a countermeasure in order to avoid the negative influences of Rayleigh fading on the channel (23). The invention is not limited to improving conditions on one channel but may be employed to any number of channels used for communications in the cellular radio communication system (1).