Abstract: Embodiments of the present invention provide a resource configuration method and an apparatus. User equipment (UE) includes a receiving module and a processing module, where the receiving module is configured to receive a broadcast message sent by a control node and including at least one first resource pool, where the control node is a base station serving the UE or a group head UE of a group to which the UE belongs. The processing module is configured to receive a device to device (D2D) service or send a D2D service by using a resource in the at least one first resource pool.

Abstract: Embodiments of the present invention provide a group call method and device. The method includes: configuring a group context for a user equipment according to channel resource information or according to network side capability information and channel resource information; sending a message carrying a group call parameter in the group context to the user equipment, where the group call parameter is used to receive a group call message and send a response; sending a group call message to the user equipment according to the group context; and receiving a response, to the group call message, sent by the user equipment according to the group call parameter.

Abstract: A passive geo-location scheme of Wi-Fi access points is described using one or more mobile measuring stations. The methods and arrangements herein relate to, in one embodiment, using the TSF timer in beacons received by the measuring station, the reported TODs, the TOAs measured by the measuring station and synchronization between the timers of the wireless device and the measuring station. The synchronization includes applying a factor ? for correcting the timer associated with the measuring station when the measuring station receives the beacons, applying a factor ? for correcting a ratio of timer rates between the timer associated with the wireless device and the timer associated with the measuring station, and applying a factor ? for correcting changes in a timer rate ratio between the first timer associated with the wireless device and the timer associated with the measuring station.