A relay network of wireless devices extends the range of synchronized playback of broadcast audio signals. A method for delivering isochronous data using a relay network includes receiving first data of an isochronous data stream from a first wireless communications device of the relay network having a first presentation delay. The first data is received by a second wireless communications device of the relay network having a second presentation delay. The method includes presenting the first data by the first wireless communications device and the second wireless communications device at a time after transmission of the first data in a second isochronous data stream by the second wireless communications device. The first data may be presented by each wireless communications device in the relay network after transmission of the first data by a last wireless communications device in the relay network.

Techniques are provided for handling positioning sessions in response to a timing source outage. An example method for configuring a positioning method based on a timing source outage includes receiving an indication of the timing source outage from a station, determining the positioning method based at least in part on the indication of the timing source outage, and sending an indication of the positioning method to one or more network entities.

Embodiments of the present invention provide a participant of a communication system, wherein the communication system communicates wirelessly in a frequency used by a plurality of communication systems, wherein the participant is configured to transmit data uncoordinatedly with respect to other participants and/or a base station of the communication system, wherein the participant is configured to receive a synchronization data packet of a point-to-multipoint data transfer of the base station of the communication system, wherein the synchronization data packet is transferred in a frequency range of the frequency band of the communication system that is specified or known to the participant, wherein the participant is configured to receive, on the basis of the synchronization data packet, a payload data packet of the point-to-multipoint data transfer that is referenced in time and/or frequency to the synchronization data packet.

A user equipment (UE) executes a time synchronization method. The UE transmits a synchronization-specific uplink signal and receives a synchronization-specific downlink signal in response to the synchronization-specific uplink signal. The synchronization-specific uplink signal may comprise a dedicated preamble for propagation-delay-related signaling associated with at least one of timing advance (TA), propagation delay (PD), and propagation delay compensation (PDC) between the UE and a serving base station of the UE.

A wireless communication system includes a base station group constituted of four or more base stations 2. One base station 2A measures a reception clock time T.sub.AA of a signal transmitted by itself and a reception clock time T.sub.BA of a signal received from another base station 2B, and the other base station 2B measures a reception clock time T.sub.BB of a signal transmitted by itself and a reception clock time T.sub.AB of a signal received from the one base station 2A. Based on the reception clock time T.sub.AA and the reception clock time T.sub.BA and the reception clock time T.sub.BB and the reception clock time T.sub.AB, a propagation time between the base stations 2 is obtained, and distances between all the base stations 2 are obtained by multiplying each of the propagation times similarly obtained between all the base stations 2 by a propagation velocity of the signals.

According to certain embodiments, a method (700) by a network node (660) includes determining (705) a timing error associated with a closed loop comprising at least one radio link between two radio points. The timing error is determined based on at least one timing measurement associated with the at least one radio link. The method further includes adjusting (710) timing information carried over the a timing protocol link based on the timing error associated with the closed loop comprising the at least one radio link.

A mobile station device that receives downlink control information which is used to selectively provide downlink scheduling or a random access order, on a physical downlink control channel from a base station device. The mobile station device also transmits a random access preamble using a random access channel to the base station device based on receiving the downlink control information which provides a random access order, where the downlink control information provides a downlink resource allocation in a case that the downlink control information is used to provide the downlink scheduling and where a preset value is set for a field of the downlink resource allocation in a case that the downlink control information is used to provide the random access order.

A method of synchronising the clocks of a master device and at least a first slave device which are connected on a wireless network. The method includes sending a scan command from the master device to at least the first slave device, setting the master device to a broadcast mode and broadcasting data, the broadcast data comprising a first time stamp; scanning the broadcasting data at at least the first slave device and resetting the clock of the first slave device using the first time stamp. In particular, but not exclusively, the present disclosure relates to synchronising the clocks of two devices which are connected on a Bluetooth Low Energy (BLE) wireless network.

Embodiments of this disclosure provide methods and apparatuses for detecting and processing resource overlapping and a system. The method for detecting resource overlapping applicable to a terminal (UE) includes: transmitting timing reference information to a transmission point serving for the terminal, so that the transmission point detects whether resources allocated by it for the terminal are overlapped with resources allocated by other transmission points for the terminal according to the timing reference information. When a terminal is served by multiple transmission points, with the embodiments of this disclosure, resource overlapping may be avoided, and degradation of terminal performance resulted from asynchronism of the timing of the multiple transmission points may be overcome.

Embodiments of this application provide example clock synchronization methods, example apparatuses, and example systems. One example method includes obtaining, by a first-time apparatus, a first-time difference and a second time difference. The first-time difference is between the first-time apparatus and a satellite, and the first-time difference is determined based on a first-time pulse signal and information about the satellite. The second time difference is between the second apparatus and the satellite, and the second time difference comes from the second apparatus. The first-time apparatus and the second apparatus belong to a same access network device. The first-time apparatus obtains clock synchronization information of the first-time apparatus based on the first-time difference and the second time difference.