This disclosure provides methods, devices and systems for sharing time resources of a wireless medium. Particular implementations relate more specifically to coordinated AP (CAP) time-division-multiple-access (TDMA) techniques for sharing the time resources of a transmission opportunity (TXOP). According to such techniques, a coordinated AP that wins contention and gains access to the wireless medium for the duration of a TXOP may share its time resources with other coordinated APs. To share its time resources, the winning AP may partition the TXOP into multiple TXOP segments each including respective time resources representing a sub-duration of the TXOP. For example, the winning AP may assign, grant or allocate (hereinafter used interchangeably) itself one or more of the time resources and also allocate each of one or more remaining time resources to one or more other ones of the coordinated APs.

A mechanism is presented for attributing users to one or more of a plurality of sub-bands in a multiple access communications system, wherein in an initial assignment phase, a first user is selected for a sub band, for example on the basis of a user priority. Users having complementary channel gains to that of the first user are identified, and then a second sub-band user maximizing a performance metric reflecting the achieved throughput, and/or fairness across users, is selected to accompany the first user on that sub-band. The initial assignment phase may terminate once all users have been assigned to a sub-band once. After the first phase is complete, the first user for each sub-band may be the user whose achieved total throughput is furthest from a target throughput defined for that user, wherein each user is assigned to the remaining sub-band to which no first user is currently attributed offering the highest channel gain for that user. Mechanisms for determining user priority, making provisional and definitive power allocations, and performance metrics are proposed.

An interleaved mapping method includes: interleaving a virtual sequence of first physical resource element bundles according to an interleaving function, wherein the first physical resource element bundles include actual physical resource element bundles and one or more virtual physical resource element bundles; marking a physical resource element bundle in the interleaved first physical resource element bundles without any corresponding actual physical resource element bundle as an invalid physical resource element bundle; determining a first correspondence of the valid physical resource element bundles in the interleaved first physical resource element bundles with respect to an actual sequence of the actual physical resource element bundles; and determining, based on the first correspondence and a second correspondence of logical resource elements with respect to the actual sequence, a mapping relationship between the logical resource elements and the actual physical resource element bundles.

The disclosed technology is generally directed towards optimization and control of wireless networks based on monitoring and/or analytics data received at a radio access network (RAN) controller device in a split RAN protocol architecture. The RAN controller device processes the monitoring/analytics data and provides control information and/or optimization data, which can be policy data, to a central unit device that can configure the wireless network based on the control information and/or optimization data. The technology can facilitate optimization and configuration of mobility procedures including handovers and secondary cell group changes, optimization of carrier aggregation and dual connectivity procedures based on multiple metrics, and can facilitate centralized optimization of topology and route selection for integrated access and backhaul nodes.

A method of determining a performance metric for a selection of a first user and a second user among a set of candidate users for attribution to a sub-band in a multiple access communications system based on Non-Orthogonal Multiple Access (NOMA), is provided wherein the first user (k.sub.1) and the second user (k.sub.2) are selected as the pair of candidate users corresponding to an extremum of the ratio between a first term reflecting the total throughput achievable by any pair of the candidate users assigned to the sub-band (s) under consideration, and a second term reflecting the known throughput achieved by that same pair of candidate users over a predetermined preceding period. Implementations include a method of determining a performance metric is presented for attributing users to one or more of a plurality of sub-bands in a multiple access communications system, wherein in an initial assignment phase for a specific sub-band, a first user is selected for that band on the basis of one or more criteria such as user priority. Then a second sub-band user maximizing or minimizing the performance metric.

A system and method for assigning users to a particular sub band in a given time slot in a NOMA system, where whichever pair of users corresponds to the smallest candidate pair user throughput deviation value, reflecting the aggregate of the respective difference between the average throughput across all users (K) and the known throughput of each of the two users under consideration (k.sub.1k.sub.2), and each user attributed to a sub-band other than the selected sub-band. User pairs for consideration may consider all possible pairs, or may be limited to candidate pairs satisfying together, or comprising one or both users who satisfy a criterion such as channel gain, distance to a target, throughput or a combination of some or all of these factors. The power allocated to each sub-band may be attributed by a waterfilling algorithm.

In one embodiment, an apparatus includes a memory storing computer readable instructions; and at least one processor configured to execute the computer readable instructions, which configure the processor to receive data/attributes from a radio access network, RAN, related to a carrier aggregation operation performed by the RAN; determine at least one adjustment to the carrier aggregation operation based on the received data/attributes; and send the at least one adjustment to the RAN.

A communication device and a method for determining an information from a second device including setting an initial beamforming pattern is provided. The initial beamforming pattern includes a beamforming direction and a corresponding beamforming area for each of the plurality of antenna ports, including determining a concerned direction interval based on overlapping beamforming areas of adjacent pairs of the plurality of antenna ports, receiving a signal from the second device, measuring a signal gain from the signal on each of the plurality of antenna ports, determining which concerned direction interval the second device occupies based on an antenna port having the highest signal gain and on one of the adjacent pair of antenna ports to the antenna port having the highest signal gain having a higher signal gain, and determining the information from the second device based on the determined concerned direction interval.

An apparatus and method for transmitting broadcast signal to which channel bonding is applied are disclosed. The apparatus according to the present invention includes an input formatting unit configured to generate baseband packets corresponding to a plurality of packet types using data corresponding to a physical layer pipe; a stream partitioner configured to partition the baseband packets into a plurality of partitioned streams corresponding to the plurality of packet types; BICM units configured to perform error correction encoding, interleaving and modulation corresponding to the plurality of partitioned streams, respectively; and waveform generators configured to generate RF transmission signals corresponding to the plurality of partitioned streams, respectively.

Methods, apparatuses, and systems for radio link monitoring (RLM) implemented by a wireless transmit/receive unit (WTRU) are provided. A representative method for RLM includes mapping, by the WTRU, one or more RLM-RS resources to at least one BLER threshold of a plurality of BLER thresholds. The representative method also includes, for each respective RLM resource that is mapped, determining, by the WTRU, a BLER of the respective RLM-RS resource, and comparing the determined BLER of the respective RLM-RS resource with the at least one mapped BLER threshold associated with the respective RLM-RS resource. The representative method further includes generating, based on one or more of the comparisons, a set of in-sync indications and/or a set of out-of-sync indications, and indicating, by the WTRU, one or more attributes associated with the set of in-sync indications and/or the set of out-of-sync indications.