公开(公告)号：US09270433B2

公开(公告)日：2016-02-23

申请号：US14450430

申请日：2014-08-04

Applicant: MEDIATEK INC.

Inventor： Yih-Shen Chen ,  Chih-Yuan Lin

IPC: H04W4/00 ,  H04L5/00 ,  H04W72/14

CPC classification number: H04L5/0051 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0091 ,  H04L5/0094 ,  H04W72/14

Abstract: A method of multi-set RRC signaling for ap-SRS configuration is provided to enhance ap-SRS flexibility. An eNB transmits a plurality of sets of UE-specific SRS parameters to a UE via upper layer messaging in a multi-carrier wireless communication system. The eNB also determines triggering information of a selected set of UE-specific SRS parameters and an indicated carrier for the UE. The eNB then transmits an uplink or downlink grant over a primary carrier, the grant comprises triggering information for the UE to send an ap-SRS over the indicated carrier using the selected set of UE-specific SRS parameters. In one embodiment of joint signaling, the plurality of sets of UE-specific SRS parameters are signaled together in a single RRC transmission. In another embodiment of separate signaling, each set of UE-specific SRS parameters is signaled independently.

Abstract translation: 提供了用于ap-SRS配置的多集RRC信令的方法以增强ap-SRS灵活性。 eNB在多载波无线通信系统中经由上层消息传送向UE发送多组UE特定的SRS参数。 eNB还确定UE特定SRS参数的所选集合的触发信息以及针对UE的所指示的载波。 eNB然后通过主载波发送上行链路或下行链路许可，该许可包括触发信息，以使UE使用所选择的UE专用SRS参数集来在所指示的载波上发送ap-SRS。 在联合信令的一个实施例中，在单个RRC传输中将多组UE特定SRS参数一起发信号通知。 在单独信令的另一个实施例中，UE集合的特定SRS参数被独立地发信号通知。

公开(公告)号：US09220072B2

公开(公告)日：2015-12-22

申请号：US14584493

申请日：2014-12-29

Applicant: MEDIATEK INC.

Inventor： Chia-Chun Hsu ,  Michael Roberts ,  Chih-Yuan Lin ,  Yih-Shen Chen ,  I-Kang Fu

IPC: G01R31/08 ,  H04W52/24 ,  H04W52/34 ,  H04W52/36 ,  H04W72/04

CPC classification number: H04W52/243 ,  H04W52/34 ,  H04W52/365 ,  H04W52/367 ,  H04W52/38 ,  H04W72/048

Abstract: A power control method to mitigate in-device coexistence (IDC) interference is provided. A wireless communication device (UE) is equipped with a first LTE radio module and a second co-located WiFi/BT/GSNN radio module. Upon detecting coexistence or IDC interference, the UE applies power control method to mitigate the interference. In a first embodiment, the LTE radio module adjusts its power parameters locally without informing the serving eNB. In a second embodiment, the LTE radio module adjusts its power parameters and implicit informs the eNB through existing PHR reporting. In a third embodiment, the LTE radio module changes its power or power class and explicitly informs the eNB through UE capability or new RRC message or MAC CE. Power control can be used as a low cost and lightweight solution before applying other heavyweight solutions that either require more resource or control overhead, or have higher impact on throughput.

公开(公告)号：US20140321385A1

公开(公告)日：2014-10-30

申请号：US14324236

申请日：2014-07-07

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan Lin ,  Pei-Kai Liao

IPC: H04J11/00

CPC classification number: H04J11/005 ,  H04L5/0007 ,  H04L5/005 ,  H04L27/261 ,  H04L2025/03796

Abstract: In wireless OFDMA systems, midamble is used to facilitate downlink (DL) channel estimation. Midamble signals are transmitted by a base station via a midamble channel allocated in a DL subframe. In a novel symbol-based midamble channel allocation scheme, a midamble channel is allocated in the first or the last OFDM symbol of multiple resource blocks of the subframe, while the remaining consecutive OFDM symbols are used for data transmission. The symbol-based midamble channel provides good coexistence between midamble signals and pilot signals without inducing additional limitation or complexity. Under a novel midamble channel and sequence arrangement, both code sequence and either time-domain or frequency-domain location degrees-of-freedom are considered such that the required number of midamble sequences is substantially smaller than the number of strong interferences. In addition, different midamble sequences are systematically generated based on a base sequence such that the receiving mobile station does not need to memorize all the different code sequences.

Abstract translation: 在无线OFDMA系统中，使用midamble来促进下行链路（DL）信道估计。 Midamble信号由基站经由在DL子帧中分配的中置码信道发送。 在一种新颖的基于符号的中间码信道分配方案中，在子帧的多个资源块的第一个或最后一个OFDM符号中分配一个中继码信道，而其余的连续的OFDM符号用于数据传输。 基于符号的中置码信道在中置信号和导频信号之间提供良好的共存，而不会引起额外的限制或复杂性。 在新颖的中间码信道和序列排列下，考虑码序列和时域或频域位置自由度，使得所需数量的中继码序列显着小于强干扰数。 此外，基于基本序列系统地生成不同的中间码序列，使得接收移动台不需要记住所有不同的代码序列。