Abstract:
A method comprises, in a carrier aggregation system having multiple component carriers, utilizing an air interface based collision avoidance procedure on at least one component carrier that is associated to a cellular radio access technology to check that a radio resource in the at least one component carrier is available; and thereafter communicating on the radio resource using the cellular radio access technology only if the check reveals that the radio resource is available.
Abstract:
Methods, apparatuses, and computer program products for providing uniform user equipment initialization procedure for both in-coverage and out-of-coverage device-to device communications are disclosed herein, incorporating a novel tri-timer design: an initial timer, a search timer, and an active timer. In a method a determination is made regarding a user equipment as being a clusterhead candidate which can act as a clusterhead of a cluster. The user equipment searches for a suitable cell or cluster to join. If a suitable cell or a cluster is not found, the user equipment is selected to be a clusterhead which will act as the clusterhead of its own cluster. After selecting the user equipment to be a clusterhead and establishing its cluster, the user equipment transmits a discovery signal which alerting other user equipment to the clusterhead, to which the other user equipment can join. The user equipment as clusterhead then maintains the cluster.
Abstract:
A method comprises determining in a first network element how much of a received uplink transmission is to be transmitted to a second network element, said first and second network elements both receiving said uplink transmission; and causing at least part of said received uplink transmission to be transmitted to said second network element.
Abstract:
At a wireless node in a wireless network, multiple interference estimation resources are received in a time-frequency resource space. The multiple interference estimation resources are resource elements in an assigned physical shared channel of the time-frequency resource space that do not contain physical shared channel data for the wireless node. An interference covariance matrix is determined from received signals on the multiple interference estimation resources. Symbol estimates are determined for a desired signal based in part by using the interference covariance matrix. Methods, computer programs and products and apparatus are disclosed. The techniques may be used for uplink, downlink, or D2D communications.
Abstract:
Systems, methods, apparatuses, and computer program products for band and channel selection in a radio system are provided. One method includes generating, by a network entity, at least one performance map showing performance for different portions of spectrum in a wideband radio system. The method may further include combining the at least one performance map with dynamic information, and selecting at least one portion of the spectrum to use for access based on the combined at least one performance map and dynamic information.
Abstract:
A network element of a first radio access technology system receives scheduling information for using resources in a second radio access technology system. Based on the scheduling information for using the resources in the second radio access technology system, the network element of the first radio access technology system is scheduled to use the resources in the second radio access technology system. The network element of the first radio access technology system transmits utilizing the resources in the second radio access technology system. Further aspects provide for scheduling based on building an interference profile map of the second radio access technology system created from the scheduling information. Other aspects detail additional attributes to determine the scheduling and/or go into or augment the interference profile map so as to determine the scheduling.
Abstract:
Various communication systems may benefit from identification of and communication of coverage shortfall. For example, certain communication systems that employ machine type communication devices may benefit from having such shortfall communicated from the devices to a base nation. For example, a method can include determining an amount of coverage shortfall of a device. The method can also include transmitting an indication of the amount of coverage shortfall.
Abstract:
Systems, methods, apparatuses, and computer program products for backhaul scheduling in a multi-hop network are provided. One method includes providing, in the multi-hop network, an uplink control portion and a downlink control portion and a data portion in a slot. The method may further include scheduling, by an access point in the multi-hop network, at least one of a backhaul transmission for the slot or at least one following slot or an access transmission for the slot.
Abstract:
The exemplary embodiments of the invention provide at least a method and an apparatus to determine a beacon signal for a network node, where the network node is configured to connect with a cluster of access points in a wireless communication network, and where the beacon signal identifies the cluster; and send the beacon signal towards the wireless communication network. Further, the exemplary embodiments of the invention provide at least a method and an apparatus to determine a dominant access point of a cluster of access points based on signaling from at least one access point associated with the cluster of access points; and in response to the determining, direct communications towards the dominant access point of the cluster of access points.
Abstract:
A method includes scheduling, by a base station configured to service a cell within a cellular communication network, multiple grants to an apparatus in a coverage area of the cell. Each of the scheduled multiple grants includes time-frequency resources in at least one shared spectrum that is to be used by the apparatus to attempt to communicate. Each of the scheduled multiple grants differs from others of the scheduled multiple grants in one or both of time or frequency. The method includes sending indications of the scheduled multiple grants. Another method includes receiving, at the apparatus in the cell, indications of the multiple grants and attempting by the apparatus to communicate using one or more of the multiple grants. Apparatus, computer programs, and program products are also disclosed.