公开(公告)号：US20150249527A1

公开(公告)日：2015-09-03

申请号：US14713158

申请日：2015-05-15

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Shiang-Jiun Lin ,  Yih-Shen Chen

IPC: H04L5/00 ,  H04L12/26

CPC classification number: H04L5/0048 ,  H04L5/0053 ,  H04L5/0082 ,  H04L5/0094 ,  H04L5/0096 ,  H04L43/08 ,  H04W48/10 ,  H04W64/00 ,  H04W72/0406 ,  H04W72/1278

Abstract: A method of network-based positioning using sounding reference signal (SRS) is proposed. An eNodeB configures a number of parameters of a periodic SRS transmission for a user equipment (UE). The eNodeB then transmits SRS configuration data for SRS measurements performed by a location measurement unit (LMU). The SRS configuration data includes cell-specific SRS bandwidth configuration and UE-specific SRS bandwidth configuration. The SRS configuration data may further include a number of antenna ports for SRS transmission, SRS frequency hopping bandwidth configuration, information on whether SRS sequence-group hopping is enabled, and Δss when SRS sequence hopping is enabled. Upon receiving the SRS configuration data, the LMU is able to perform timing measurements over the received SRS signals from the UE. In one embodiment, the LMU detects SRS dropping to avoid performance degradation of the network-based positioning.

Abstract translation: 提出了一种使用探空参考信号（SRS）进行网络定位的方法。 eNodeB为用户设备（UE）配置周期性SRS传输的多个参数。 eNodeB然后发送用于由位置测量单元（LMU）执行的SRS测量的SRS配置数据。 SRS配置数据包括小区特定的SRS带宽配置和UE特定的SRS带宽配置。 SRS配置数据还可以包括用于SRS传输的多个天线端口，SRS跳频带宽配置，是否启用SRS序列组跳变的信息，以及当启用SRS序列跳频时的“Dgr”; ss。 在接收到SRS配置数据之后，LMU能够对来自UE的接收的SRS信号执行定时测量。 在一个实施例中，LMU检测到SRS丢弃，以避免基于网络的定位的性能下降。

公开(公告)号：US20140204783A1

公开(公告)日：2014-07-24

申请号：US14157212

申请日：2014-01-16

Applicant: MEDIATEK, INC.

Inventor： Shiang-Jiun Lin ,  Chien-Hwa Hwang ,  Xiangyang Zhuang

IPC: H04W24/02 ,  H04L5/14 ,  H04W72/04

CPC classification number: H04W24/02 ,  H04L1/1825 ,  H04L1/1854 ,  H04L5/1438 ,  H04L5/1469 ,  H04W48/12 ,  H04W72/048 ,  H04W72/1289 ,  H04W74/006

Abstract: Solutions to support the coexistence of legacy UEs and new released UEs in adaptive TDD systems are proposed. Methods of TDD grouping, RACH (random access channel) resource allocation, and DL/UL data transmission and HARQ (Hybrid Automatic Repeat Request) process to serve legacy UEs without interfering the operation of new released UEs are proposed. With the methods proposed in this invention, both the legacy UEs and the new released UEs can be served in the adaptive TDD systems and the data transmission from the legacy UEs would not interfere the data reception of the new released UEs.

Abstract translation: 提出了支持传统UE和新发布的UE在自适应TDD系统中共存的解决方案。 提出了TDD分组的方法，RACH（随机接入信道）资源分配和DL / UL数据传输和HARQ（混合自动重传请求）过程，用于服务于传统UE而不干扰新发布的UE的操作。 利用本发明提出的方法，可以在自适应TDD系统中服务传统UE和新发布的UE，并且来自传统UE的数据传输不会干扰新发布的UE的数据接收。