Disclosed herein are related to a first device to communicate with an access point and a second device. In one aspect, the first device communicates with the access point during the first time interval through a first wireless communication. In one aspect, the first device prevents communication with the access point during the second time interval. In one aspect, the first device communicates, as a soft access point, with a second device during the third time interval within the second time interval through a second wireless communication, the third time interval shorter than the second time interval.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station in a wireless communications system. The UE may perform a random access procedure to communicate with the base station. The base station may configure the UE with criteria for selecting a transmission mode. The UE may select a transmission mode for transmitting repetitions of physical random access channel (PRACH) transmissions according to current conditions satisfying the criteria. The criteria may be different based on a contention free random access (CFRA) procedure type or a purpose of the CFRA procedure. The transmission modes may include repetitions of PRACH on multiple random access channel (RACH) occasions, multiple component carriers (CCs), multiple frequency allocations of a same CC, superposition of preambles, different RACH resources, or different PRACH formats.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station in a wireless communications system. The UE may perform a random access procedure to communicate with the base station. The base station may configure the UE with criteria for selecting a transmission mode. The UE may select a transmission mode for transmitting repetitions of physical random access channel (PRACH) transmissions according to current conditions satisfying the criteria. The criteria may be different based on a contention free random access (CFRA) procedure type or a purpose of the CFRA procedure. The transmission modes may include repetitions of PRACH on multiple random access channel (RACH) occasions, multiple component carriers (CCs), multiple frequency allocations of a same CC, superposition of preambles, different RACH resources, or different PRACH formats.

The present disclosure provides a method for conditional handover by a user equipment (UE) in a 5G communication network. The method may include: receiving, by the UE, a conditional handover command, and an associated condition from the source cell; receiving, by the UE, a plurality of target cell configurations, from the source cell, having details for a plurality of target cells meeting a conditional handover criterion; evaluating, by the UE, the received associated condition for the conditional handover; and assigning priority to the received target cells configured in the conditional handover during the cell selection procedure. The method may include selecting one target cell for conditional handover from among the plurality of target cells based on the assigned priority.

The present disclosure provides a method for conditional handover by a user equipment (UE) in a 5G communication network. The method may include: receiving, by the UE, a conditional handover command, and an associated condition from the source cell; receiving, by the UE, a plurality of target cell configurations, from the source cell, having details for a plurality of target cells meeting a conditional handover criterion; evaluating, by the UE, the received associated condition for the conditional handover; and assigning priority to the received target cells configured in the conditional handover during the cell selection procedure. The method may include selecting one target cell for conditional handover from among the plurality of target cells based on the assigned priority.

A data scheduling method and apparatus. The method includes: allocating, by an access point (AP), at least one of a plurality of primary channels to each of a plurality of stations (STAs), where active access is forbidden on the plurality of primary channels; and synchronously scheduling, by the AP, a STA on a channel including at least one idle primary channel, where the synchronously scheduled STA is a STA allocated to the at least one idle primary channel, and the at least one idle primary channel is at least one of the plurality of primary channels. In the embodiments, the AP sets the plurality of primary channels, so that the AP can flexibly schedule the station by using the idle primary channel. This avoids a problem caused by setting only one primary channel, thereby improving data transmission efficiency.

A communication device operates according to a communication protocol defines a first set of frequency resource units (RUs) and a second set of frequency RUs. The first set of frequency RUs includes at least a first subset of frequency RUs having a first bandwidth and a second set of RUs having a second bandwidth greater than the first bandwidth, and the second set of frequency RUs omits at least some of the frequency RUs in the first subset of frequency RUs. The communication device determines that a communication channel to be used for an uplink (UL) multi-user (MU) transmission spans a frequency bandwidth greater than 160 MHz, and allocates one or more frequency RUs for the UL MU transmission, including: in response to determining that the communication channel spans the frequency bandwidth greater than 160 MHz, selecting one or more frequency RUs from a second set of frequency RUs.

Embodiments include methods that may be performed by a processor of a mobile device and a processor of a base station for managing beam failure recovery (BFR). The processor of the mobile device may determine whether a beam failure of a communication link with a base station has occurred, determine whether contention free random access (CFRA) resources have been configured in response to determining that a beam failure has occurred, and initiate contention based random access (CBRA) in response to determining that CFRA resources have not been configured. The processor of the base station may receive from the mobile device a message initiating CBRA, determine whether a downlink beam or quasi-colocation (QCL) assumption a downlink resource of a physical random access channel (PRACH) is different from any active downlink beam or QCL assumption, and perform CBRA with the mobile device.

Embodiments include methods that may be performed by a processor of a mobile device and a processor of a base station for managing beam failure recovery (BFR). The processor of the mobile device may determine whether a beam failure of a communication link with a base station has occurred, determine whether contention free random access (CFRA) resources have been configured in response to determining that a beam failure has occurred, and initiate contention based random access (CBRA) in response to determining that CFRA resources have not been configured. The processor of the base station may receive from the mobile device a message initiating CBRA, determine whether a downlink beam or quasi-colocation (QCL) assumption a downlink resource of a physical random access channel (PRACH) is different from any active downlink beam or QCL assumption, and perform CBRA with the mobile device.

A method for indicating TXOP duration in a wireless communication system, comprising: generating, by a TXOP holder, a physical layer protocol data unit (PPDU), the High Efficiency Signal field A (HE-SIGA) in the PPDU carries a TXOP duration field, wherein the TXOP duration field is used to indicate the remaining time for using the channel by the station to other stations; wherein the TXOP duration field includes a first part which is used to indicate the granularity used, and a second part which is used to indicate the TXOP duration using the granularity indicated by the first part; so as that different granularities are able to be used to indicate different TXOP duration in the system; sending, the generated PPDU.