Abstract: Disclosed herein is a method and a Radio Resource Management arrangement in a wireless communication system for allocating communication of one or several services to at least one of several available frequency spectrum resources. The method comprises the steps of categorizing said available frequency spectrum resources with respect to volatility, and categorizing said one or several services with respect to compressibility, and assigning said one or several services to the available spectrum resources such that compressible services are assigned to volatile spectrum resources.

Abstract: A spectrum control node (220) and a method therein for handling spectrum bands for allocation to a mobile radio communication system (200) are disclosed. The spectrum bands are shareable with a further radio system (201) through a spectrum database node (210) for managing information about usage of the spectrum bands. The mobile radio communication system (200) comprises the spectrum control node (220) and a radio network node (230). The spectrum control node (220) determines a parameter value for indicating a condition pertaining to the radio network node (230), which condition relates to usage of at least one of the spectrum bands. When the parameter value exceeds a threshold value for the condition, whereby a need for handling at least one of the spectrum bands is indicated, the spectrum control node (220) sends, to the spectrum database node (210), a message for handling at least one of the spectrum bands.

Abstract: A method in a configuration node of a cellular network for selecting, from a set of channels of at least one primary system, at least one channel for allocation to base stations of the cellular network is provided. The method comprises the steps: Receiving, from a database, a set of channels of the at least one primary system; Observing a quality ranking of the channels of the received set of channels; Determining an optimal number of channels for the cellular network on the basis of the ranked set of channels such that a signal quality in the cellular network is optimized; and Selecting from the received set of channels on the basis of the quality ranking and the determined optimal number of channels, at least one channel for allocation to base stations of the cellular network. A corresponding configuration node is also provided.

Abstract: Methods and nodes for balancing load on channels available for secondary usage by a secondary network (404). A channel handling node (400) determines channel quality metric values for the available channels, which indicate expected utility when the channels are used for radio communication. The channel handling node then adjusts the channel quality metric value of a superior channel with higher expected utility than the other available channels, to indicate equal or lower expected utility than a channel with the next highest expected utility, when the amount of channel queries (Q) from the secondary network exceeds a limit. The channel handling node then returns the adjusted channel quality metric value of the at least one superior channel, in response to a subsequent channel query (Q).

Abstract: A node (105, 200) for a communications system (100), arranged to operate as a secondary user of part of a frequency spectrum, comprising a detection unit (210) for detecting other secondary users (110) who use all or part of said frequency spectrum and for detecting changes in such other secondary user's usage of their part of the frequency spectrum. The node (105, 200) also comprises a signaling unit (225) for signaling to detected other secondary users (110) that the node (105, 200) wishes to operate within their frequency spectrum as a secondary user, by means of transmitting interference signals according to a predefined pattern in the frequency spectrum of detected other secondary users. The node also comprises a decision unit (230) for deciding how the node (105, 200) should arrange its secondary operation in the frequency spectrum together with detected other secondary users (110).

Abstract: The disclosure relates to a network node of a wireless network, and to a related method of controlling interference generated by at least one white space device controlled by the network node. The method comprises transmitting a request for information regarding channels available for secondary usage to the remote entity, and receiving information from the remote entity, the information indicating a channel available for secondary usage, a critical position associated with said channel, and an interference threshold for the critical position.

Abstract: In a communication system using aggregation of component carriers, a transmitter comprises a transmitting entity configured to transmit data messages on multiple component carriers. The transmission of the data messages is accomplished on the basis of a retransmission protocol. The retransmission protocol requires sending of an acknowledgement message in response to verifying correct receipt of a data message. A receiver comprises a receiving entity configured to receive the data messages on the basis of the retransmission protocol. In response to a decision to deactivate transmission on one of the aggregated component carriers, the retransmission protocol is triggered to retransmit those data messages for which no acknowledgement message of the retransmission protocol has been received. The retransmission is accomplished on at least one other of the component carriers.

Abstract: The disclosure relates to a white space device (WSD) of a secondary wireless network, and to a related method for transmitting a first signal on a channel available for secondary usage allocated to a primary wireless system. The method in the WSD comprises determining (410) a further channel used by the primary wireless system, that would be interfered by a transmission of the first signal on the channel available for secondary usage, retrieving (420) signal information associated with the determined further channel from the primary wireless system, transmitting (430) the first signal on the channel available for secondary usage, and transmitting (440) a second signal on the determined further channel based on the retrieved signal information, simultaneously with the first signal on the channel available for secondary usage* such that an interference generated in the primary wireless system by the first signal transmission is compensated for by the second signal transmission.

Abstract: A method and an arrangement (400) for determining an admission control threshold for use in an admission control procedure are provided. The admission control procedure manages a first spectrum resource (R1). The first spectrum resource (R1) has a first spectrum resource capacity and a first available spectrum resource capacity, wherein the first available spectrum resource capacity has a time dependence. In a step (220), the admission control threshold is determined based on the first spectrum resource capacity and a measure of the time dependence of the first available spectrum resource capacity.

Abstract: A mobile communication system includes a network based aggregation controller for controlling aggregation of component carriers from a first spectrum and a second spectrum. In addition, the mobile communication system includes a group of mobile terminals. The network based aggregation controller is configured to send a group message on at least one component carrier of the first spectrum to the group of mobile terminals. The mobile terminals receive the group message. A terminal based aggregation controller in each of the mobile terminals is configured to control operation of the respective mobile terminal with respect to the at least one component carrier of the second spectrum. This control is accomplished in response to the received group message.

Abstract: A node (105, 200) for a communications system (100), arranged to operate as a secondary user of part of a frequency spectrum, comprising a detection unit (210) for detecting other secondary users (110) who use all or part of said frequency spectrum and for detecting changes in such other secondary user's usage of their part of the frequency spectrum. The node (105, 200) also comprises a signaling unit (225) for signaling to detected other secondary users (110) that the node (105, 200) wishes to operate within their frequency spectrum as a secondary user, by means of transmitting interference signals according to a predefined pattern in the frequency spectrum of detected other secondary users. The node also comprises a decision unit (230) for deciding how the node (105, 200) should arrange its secondary operation in the frequency spectrum together with detected other secondary users (110).

Abstract: Disclosed herein is a method and a Radio Resource Management arrangement in a wireless communication system for allocating communication of one or several services to at least one of several available frequency spectrum resources. The method comprises the steps of categorizing said available frequency spectrum resources with respect to volatility, and categorizing said one or several services with respect to compressibility, and assigning said one or several services to the available spectrum resources such that compressible services are assigned to volatile spectrum resources.

Abstract: The disclosure relates to a network node of a wireless network, and to a related method of controlling interference generated by at least one white space device controlled by the network node. The method comprises transmitting a request for information regarding channels available for secondary usage to the remote entity, and receiving information from the remote entity, the information indicating a channel available for secondary usage, a critical position associated with said channel, and an interference threshold for the critical position.

Abstract: A method and an arrangement (400) for determining an admission control threshold for use in an admission control procedure are provided. The admission control procedure manages a first spectrum resource (R1). The first spectrum resource (R1) has a first spectrum resource capacity and a first available spectrum resource capacity, wherein the first available spectrum resource capacity has a time dependence. In a step (220), the admission control threshold is determined based on the first spectrum resource capacity and a measure of the time dependence of the first available spectrum resource capacity.