The disclosure relates to a wireless communication system, and relates to a method and apparatus for scheduling a plurality of user equipments (UEs) by considering a frequency selectivity. A method, performed by a base station, for transmitting or receiving data in a wireless communication system according to an embodiment includes determining a UE candidate group set based on channel state information for channels of a plurality of carriers, determining an offset used to adjust the number of UEs of the UE candidate group set, based on frequency selectivity information between a representative channel selected from among the channels of the plurality of carriers and other channels, based on the offset, determining a plurality of UEs to which data is to be transmitted, and transmitting the data to the determined plurality of UEs.

Methods and apparatuses are related to multi-user parallel channel access (MU-PCA). For example, a wireless transmit/receive unit (WTRU) is provided that is one of the plurality of WTRUs operable to simultaneously communicate via a plurality of channels managed by an access point (AP). The WTRU includes a receiver configured to receive, from the AP, over at least one channel of the plurality of channels, a group poll (G-Poll) message that includes a resource allocation that indicates at least one allocated channel of the plurality of channels for the WTRU; and a transmitter configured to transmit an uplink request message, to the AP in response to the G-Poll message, over the at least one allocated channel of the plurality of channels, the uplink request message corresponding to uplink data the WTRU has for transmission to the AP.

Latency reduction techniques for radio access networks are described. In various embodiments, a reduced transmission time interval (rTTI) may be implemented in order to reduce air interface latency in a radio access network. In some embodiments, an rTTI block may be defined, and some operations may be performed in rTTI block-wise fashion in order to reduce the marginal overhead associated with implementation of the rTTI. In various embodiments in which an rTTI is implemented, DM-RS granularity may be improved by use of techniques that enable data and reference signals to be multiplexed within a same OFDM symbol. In some embodiments, a current transmission time interval (TTI) may be maintained, and latency reduction may be achieved via the use of novel techniques for one or more of code block (CB) segmentation, uplink (UL) resource element (RE) mapping and HARQ cycle timing. Other embodiments are described and claimed.

A wireless communication system includes a plurality of wireless communication apparatuses that transmit a wireless frame to a terminal, and a control apparatus, and the wireless communication apparatus transmits information representing the number of retransmissions of the wireless frame to the control apparatus, and the control apparatus acquires the information representing the number of retransmissions of the wireless frame, selects the wireless communication apparatus in accordance with the number of retransmissions, and causes the selected wireless communication apparatus to start transmitting the wireless frame.

This document describes methods, devices, systems, and means for user-equipment-coordination-set (UESC) scheduling in which a coordinating user equipment receives an indication from a base station specifying multiple user equipments to include in the user-equipment-coordination set. The coordinating user equipment allocates resources to each of the multiple user equipments for communication using the local wireless network and transmits a UECS resource grant to each of the multiple user equipments for communication using the local wireless network. The coordinating user equipment communicates with the multiple user equipments, using the resources granted in the UECS resource grants for the local wireless network, to coordinate a joint communication between the user-equipment-coordination set and the base station. The coordinating user equipment participates in the joint communication, with the multiple user equipments, to communicate data with the base station for a target user equipment in the user-equipment-coordination set.

Embodiments include methods for an access point to schedule wireless communication devices. Such methods include performing link adaptation by assigning respective modulation and coding schemes (MCS) for the wireless communication devices. Each assigned MCS is associated with a corresponding power back-off. Such methods include scheduling the wireless communication devices on transmission resources based on assignment of the wireless communications devices into two or more groups. Each group is scheduled on different transmission resources than used to schedule other groups. First wireless communication devices assigned a first MCS and a first power back-off are assigned to a first group. Second wireless communications devices assigned a second MCS and a second power back-off, and that meet a grouping criterion associated with the first power back-off, are assigned to the first group until a maximum size for the first group is reached. Other embodiments include access points configured to perform such methods.

The present disclosure relates to telecommunications. In one of its aspects, the disclosure concerns a method in a BS for time domain resource scheduling for group transmissions in a wireless communication system, which comprises the BS and a plurality of UEs, including a first UE. The plurality of UEs are assigned to a group. At least two of these UEs have data for group transmission to the BS. An aggregated BSR comprising BSRs from the at least two UEs is received from the first UE. The BS schedules time domain resources for at least one of SL transmissions of the data within the group and cooperative UL group transmissions of the data from the UEs to the BS. At least one bitmap indicating the scheduled time domain resources is generated and transmitted to the first UE. Each bit in each bitmap corresponds to a potential transmission in the corresponding UL and SL.

Polling to determine which user devices wish to transmit, is a time-consuming and resource-intensive process in 5G and 6G. Procedures disclosed herein can provide a fast, extremely compact sequence whereby the base station can determine which users are ready to transmit. First, the base station divides the users into a number of sections, and assigns each user a position in its section. Then, in a “section poll”, the user devices indicate which sections include at least one ready user, and the base station broadcasts a terse listing of these section numbers. Then, in a subsequent “user poll”, the ready users specifically identify themselves, with another compact format. For example, the section poll may use just a single resource element per section, and the user poll may include only those sections that have at least one ready user. These resource-efficient protocols can thereby save energy and time while minimizing background generation.

A method comprising controlling a receiver of a communications device to reduce a power consumption in accordance with a discontinuous reception, DRX, off period in which no signals representing scheduling information are received via a physical downlink control channel when in a connected mode and in which the communications device can reduce a power to the receiver, controlling the receiver of the communications device to increase the power consumption so as to detect whether or not signals from a group control channel have been received by the receiver either during the DRX off period or during a first time slot of a DRX on period in which signals representing scheduling information may be transmitted by the wireless communications network via the physical downlink control channel and in which the communications device may increase the power to the receiver.

The invention relates to a wireless communication system (100) comprising a plurality of radio devices (102, 104). Each radio device of the plurality of radio devices (102, 104) is configured to: obtain timing information representing timing schedules of one or more other radio devices (102, 104) within its neighborhood; define, based on the obtained timing information, at least one timing schedule group (106, 108) into which the plurality of radio devices (102, 104) are divided and a size of each at least one timing schedule group (106, 108); and synchronize its own timing schedule with the timing schedule of the timing schedule group (106, 108) with the largest size. The invention relates also to a synchronization method (500) for the wireless communication system (100), a radio device (102, 104) for a wireless communication system, and a synchronization method for the radio device (102, 104).