公开(公告)号：US10045346B1

公开(公告)日：2018-08-07

申请号：US15225952

申请日：2016-08-02

Applicant: Sprint Spectrum L.P.

Inventor： Sreekar Marupaduga ,  Andy M. Wurtenberger ,  Rajveen Narendran ,  Ryan P. Dreiling

IPC: H04W4/00 ,  H04W72/04 ,  H04L12/26 ,  H04W4/02 ,  H04M7/00

Abstract: Disclosed are methods and systems for selecting a carrier on which to serve a user equipment device (UE). In particular, a base station may determine that a speed of movement of the UE is threshold high. In response to determining that the speed of movement of the UE is threshold high, the base station may select a carrier based on a group delay variation (GDV) of the selected carrier. For example, the base station may respond to the determining by selecting a carrier having a threshold low GDV. In another example, the base station may respond to the determining by selecting the carrier having the lowest GDV among two or more candidate carriers being considered as part of the selection process. As such, once a carrier is selected, the base station may then serve the UE on the selected carrier.

公开(公告)号：US09226299B1

公开(公告)日：2015-12-29

申请号：US14487588

申请日：2014-09-16

Applicant: Sprint Spectrum L.P.

Inventor： Sreekar Marupaduga ,  John W. Prock ,  Andy M. Wurtenberger ,  Patrick J. Schmidt

IPC: H04W72/00 ,  H04W72/04

CPC classification number: H04W72/048 ,  H04W28/26 ,  H04W72/0453

Abstract: During a communication session, a filter in the RAN may filter signals sent over the communication pathway. When the filter filters signals sent over communication pathway, it may also cause some filter loss in the signals. The amount of the filter loss may vary as a function of frequency. Before the start of a communication session, the RAN may determine a filter loss for a given frequency. Because a higher filter loss indicates the RAN will transmit (or receive) a weaker signal, it may be undesirable to transmit signals to WCDs that are located a far distance from the RAN with frequencies having high filter losses. Thus, once the RAN has determined a filter loss for a given frequency, the RAN may reserve the given frequency for use in communication between the RAN and at least one WCD based on a distance between the WCD and the RAN.

Abstract translation: 在通信会话期间，RAN中的过滤器可以过滤通过通信路径发送的信号。 当滤波器过滤通过通信路径发送的信号时，它也可能导致信号中的一些滤波器损耗。 滤波器损耗的量可以随着频率的变化而变化。 在通信会话开始之前，RAN可以确定给定频率的滤波器损耗。 由于较高的滤波器损耗表示RAN将发送（或接收）更弱的信号，因此可能不希望将信号发送到与RAN的距离远的WCD，频率具有较高的滤波器损耗。 因此，一旦RAN已经确定给定频率的滤波器损耗，RAN可以基于WCD和RAN之间的距离来保留用于RAN与至少一个WCD之间的通信中的给定频率。