Abstract: One embodiment is directed to a method comprising selecting a group of packets for at least one access category, determining a set of contention parameters based on the at least one access category, transmitting the selected group of packets by using the determined set of contention parameters, obtaining information about collision of the transmitted group of packets, and determining an updated set of contention parameters based on the obtained collision information and a predefined condition.

Abstract: In accordance with an example embodiment of the present invention, methods and apparatus, including computer program products, are provided. In one aspect there is provided a method. The method may include configuring the device to monitor the presence of the OFDMA beacons and the quality of the OFDMA beacon receptions. The device may transmit the beacon reports that detail the sensed beacons from the beaconing device during an OFDMA beacon opportunity. In another aspect there is provided a method. The method may include configuring a dedicated beacon quality measurement agreement between two or more devices. Based on the agreement defining the beacon transmission and reception periodicity, one device transmits a beacon and the other devices in the agreement monitor the beacon. Related apparatus, systems, methods, and articles are also described.

Abstract: In accordance with an example embodiment of the present invention, a method comprises determining at a base station an activity level, and selecting an availability mode based at least in part on the activity level, wherein the availability mode is one of a full-availability mode, a semi-availability mode and a minimum-availability mode. The method also comprises configuring radio resources for at least the minimum-availability mode and switching to the selected availability mode.

Abstract: Methods, apparatuses, and computer programs for assigning measurement groups in a wireless network are disclosed. The measurement group may be announced by measurement group information comprised in a broadcast message transmitted in the wireless network. Reporting may be triggered by transmission of a request-to-report message transmitted in the wireless network.

Abstract: There is a method and apparatus for transmitting a beacon for D2D communications in a first radio resource selected from among a first set of radio resources of a beacon frame; and for transmitting a broadcast message in a second radio resource selected from among a second set of radio resources of the same beacon frame. In various particular embodiments: the beacon has an indication that the broadcast message is to be transmitted in the beacon frame; the beacon has an indication specifying the second radio resource; there is transmitted a broadcast message header in the second radio resource during an initial subframe of the beacon frame and the broadcast message header has an indication of how many subframes are allocated for the broadcast message; and the broadcast message header has a retransmission control field that selectively indicates which broadcast partners are to re-transmit the broadcast message.

Abstract: Methods and apparatus, including computer program products, are provided for sensing and/or transmission coverage adaptation using interference information. In one aspect there is provided a method. The method may include determining, at a node, a degree of interference at the node; receiving, at the node, at least one message from at least one neighboring node, the at least one message including another degree of interference observed at the at least one neighboring node; and adjusting, by the node based on the degree of interference at the node and the at least another degree of interference, at least one of a receiver sensitivity of the node, a clear channel assessment detection range of the node, or a transmit power of the node. Related apparatus, systems, methods, and articles are also described.

Abstract: One embodiment is directed to a method comprising selecting a group of packets for at least one access category, determining a set of contention parameters based on the at least one access category, transmitting the selected group of packets by using the determined set of contention parameters, obtaining information about collision of the transmitted group of packets, and determining an updated set of contention parameters based on the obtained collision information and a predefined condition.

Abstract: This document discloses a solution for reducing interference between wireless networks. According to an aspect, a method comprises: acquiring, by an access node of a first wireless network from at least one node of the first wireless network, information on at least one interfering node of a second wireless network; generating, by the access node, mapping information between the node of the first wireless network and said at least one interfering node; and causing, by the access node, transmission of the mapping information to another access node of the second wireless network.

Abstract: In accordance with an example embodiment of the present invention, a method comprises identifying at least one beacon opportunity at a wireless network device; selecting a beacon channel from a beacon slot that is a flexibly allocated frequency resource; and transmitting at least one beacon signal in the selected beacon channel multiplexed in a beacon frame during the identified beacon opportunity.

Abstract: Methods, apparatuses, and computer programs for assigning measurement groups in a wireless network are disclosed. The measurement group may be announced by measurement group information comprised in a broadcast message transmitted in the wireless network. Reporting may be triggered by transmission of a request-to-report message transmitted in the wireless network.

Abstract: In accordance with an example embodiment of the present invention, a method is disclosed that comprises measuring a first link quality of a first link based at least in part on a first power value; measuring a second link quality of a second link based at least in part on a second power value; and determining a suitable device-to-device (D2D) mode for a D2D connection based at least in part on the first link quality, the second link quality, and one or more D2D user equipment (UE) constraints.

Abstract: Methods and apparatus, including computer program products, are provided for sensing and/or transmission coverage adaptation using interference information. In one aspect there is provided a method. The method may include determining, at a node, a degree of interference at the node; receiving, at the node, at least one message from at least one neighboring node, the at least one message including another degree of interference observed at the at least one neighboring node; and adjusting, by the node based on the degree of interference at the node and the at least another degree of interference, at least one of a receiver sensitivity of the node, a clear channel assessment detection range of the node, or a transmit power of the node. Related apparatus, systems, methods, and articles are also described.

Abstract: There is provided a method, comprising: receiving, by a target node of a wireless access network, a signal from a first source node; determining the angular sector in which the first source node is located with respect to the target node; responding to the signal by both transmitting a first message omni-directionally and transmitting a second message directionally towards the angular sector; and establishing a first resource reservation on a frequency channel at least partly on the basis of transmitting the first message and the second message, wherein the first resource reservation is for performing directional data transfer with the first source node.

Abstract: Various example embodiments are disclosed relating to feedback and link adaptation techniques for wireless networks. According to an example embodiment, an apparatus may include a processor or controller. The controller may be configured to determine a channel quality indication (CQI) value for each of a plurality of wireless sub-channels, discard any of the CQI values older than a threshold time, leaving a set of current CQI values, determine a percentile CQI value based on the set of current CQI values, and transmit the percentile CQI value to an infrastructure node. The infrastructure node, may, for example, determine or select one or more data transmission parameters, such as a modulation scheme and/or coding rate, based at least in part on the received percentile CQI value.

Abstract: Embodiments of the invention provide signaling mechanisms for wireless networks composed of a large number of stations. An example method embodiment comprises: determining, by a wireless relay device, a first time window allocated for a first network, allowing first maximum transmit power for packet transmissions; and determining, by the wireless relay device, a second time window allocated for a second network, wherein the second time window is allowed for transmissions also within the first network, but only with second maximum transmit power that is lower than the first maximum transmit power.

Abstract: There is provided a method, comprising: detecting, by a node of a first wireless network, that at least one overlapping second wireless network is configured to apply contention periods and contention-free periods for communicating with different subsets of devices; detecting that a contention period timing applied by the at least one overlapping second wireless network is not aligned with a contention period timing applied by the node of the first wireless network; and causing a modification of the contention period timing in at least one of the wireless networks in order to have the contention periods to take place at least partly at the same time in each overlapping wireless network.

Abstract: Method, apparatus, and computer program product embodiments of the invention are disclosed for contention-free medium access within assigned access slots employable, for example, in connection with wireless networks. In an example embodiment of the invention, a method comprises: receiving, at an apparatus, one or more access node broadcast frames, wherein said broadcast frames comprise: assignment information on assignment of one or more assigned access slots; and contention indication indicating whether contention is to be performed in order to access said slots; learning at the apparatus, by considering said assignment information, of a slot, of said assigned access slots, assigned to the apparatus; learning, at the apparatus, by considering said contention indication, whether contention is to be performed in order to access the slot assigned to the apparatus; and accessing, at the apparatus, a medium during the slot assigned to the apparatus.

Abstract: Method, apparatus, and computer program product embodiments configure channel access windows in overlapping network environments. An example method embodiment comprises: transmitting, by an access node, a measurement request to an associated wireless device, to perform measurements of signals received from other access nodes to which the device is not associated, the device being a member of a group of devices based on transmission by the access node to the device, of a directional beacon frame; receiving from the device, a measurement response comprising information on a directional message with an access node identifier of another access node to which the device is not associated; and determining a time window that may be used by devices that are members of the group, for transferring data between members of the group and the access node, based at least partly on the measurement response.

Abstract: Systems and techniques for management of wireless network transmission. A high efficiency wireless network that can operate using a contention free period defines an interframe space that is shorter than the interframe space used in legacy networks, so that a legacy network will be unable to contend for the medium if the high efficiency wireless network transmits during the contention free period. Before the contention free period begins, a high efficiency network element examines a transmission medium, and if an ongoing transmission extends into the contention free period, transmission by the high efficiency network is delayed until the end of the ongoing transmission. The high efficiency wireless network uses an interframe space sufficiently short that a legacy network cannot contend for the medium. After the contention free period, the high efficiency network uses an interframe space value on the order of that used by the legacy network.

Abstract: There is provided a method, comprising: detecting, by a node of a first wireless network, that at least one overlapping second wireless network is configured to apply contention periods and contention-free periods for communicating with different subsets of devices; detecting that a contention period timing applied by the at least one overlapping second wireless network is not aligned with a contention period timing applied by the node of the first wireless network; and causing a modification of the contention period timing in at least one of the wireless networks in order to have the contention periods to take place at least partly at the same time in each overlapping wireless network.