公开(公告)号：US20150215981A1

公开(公告)日：2015-07-30

申请号：US14599254

申请日：2015-01-16

Applicant: QUALCOMM Incorporated

Inventor： Shailesh Patil ,  Sudhir Kumar Baghel ,  Peter Gaal ,  Saurabha Rangrao Tavildar

IPC: H04W76/02 ,  H04W72/12

CPC classification number: H04W76/14 ,  H04W72/02 ,  H04W72/1263

Abstract: Methods, systems, and devices are described for switching a mode of operations in device to device (D2D) communications. A UE within the coverage area of a base station may communicate directly with other UEs using a centralized transmission resource schedule. Prior to experiencing radio link failure (RLF), the UE may determine that switching parameters have been met and transition to an intermediate mode based on a distributed transmission schedule using a pool of resources established by the base station. In one example, the switching parameters may be received from the base station in a connection response message. In another example, the UE may send a switching request to the base station prior to initiating the transition to the intermediate mode. In some cases, after the transition to the intermediate mode, the UE may experience a radio link failure and transition to a distributed mode using a predetermined pool of resources.

Abstract translation: 描述了用于切换设备（D2D）通信中的操作模式的方法，系统和设备。 基站的覆盖区域内的UE可以使用集中式传输资源调度与其他UE直接通信。 在经历无线链路故障（RLF）之前，UE可以基于使用由基站建立的资源池的分布式传输调度来确定已经满足了交换参数并转换到中间模式。 在一个示例中，可以在连接响应消息中从基站接收切换参数。 在另一示例中，UE可以在发起到中间模式的转换之前向基站发送切换请求。 在一些情况下，在转换到中间模式之后，UE可能会遇到无线电链路故障并且使用预定的资源池转换到分布式模式。