公开(公告)号：US11184905B2

公开(公告)日：2021-11-23

申请号：US16127019

申请日：2018-09-10

Applicant: Texas Instruments Incorporated

Inventor： Pierre Bertrand ,  Jing Jiang ,  Michael Livshitz

IPC: H04W72/12

Abstract: Wireless communication between a base station and at least one user equipment comprises the following. Each user equipment periodically measures channel quality of communication with the base station and transmits a channel quality indicator to the base station. The base station schedules communication with the at least one user equipment based upon the periodically transmitted channel quality indicators.

公开(公告)号：US10985887B2

公开(公告)日：2021-04-20

申请号：US15895222

申请日：2018-02-13

Applicant: Texas Instruments Incorporated

Inventor： Pierre Bertrand ,  Zukang Shen ,  Jing Jiang

IPC: H04L5/00 ,  H04W72/12

Abstract: A transmission of information from a secondary to a primary node occurs in a plurality of transmission instances which are logical time durations. A secondary node receives an allocation of periodic transmission instances for a scheduling request indicator (SRI) and an allocation if periodic transmission instances for a sounding reference signal (SRS). In a particular transmission instance allocated for the transmission of both SRS and SRI, the secondary node transmits the SRI without transmitting the SRS if the SRI indicates a pending scheduling request; otherwise, the secondary node transmits the SRS without transmitting the SRI.

公开(公告)号：US20190150188A1

公开(公告)日：2019-05-16

申请号：US16247072

申请日：2019-01-14

Applicant: Texas Instruments Incorporated

Inventor： Pierre Bertrand ,  Jing Jiang

IPC: H04W74/00 ,  H04L5/00 ,  H04L1/18 ,  H04W74/04 ,  H04W24/02

CPC classification number: H04L1/1812 ,  H04L5/00 ,  H04L5/0032 ,  H04L5/0051 ,  H04L5/0055 ,  H04W24/02 ,  H04W74/004 ,  H04W74/04 ,  H04W74/0833 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08

Abstract: User equipment (UE)-initiated accesses within a cellular network are optimized to account for cell size and to reduce signaling overhead. A fixed set of preamble parameter configurations for use across a complete range of cell sizes within the cellular network is established and stored within each UE. A UE located in a given cell receives a configuration number transmitted from a nodeB serving the cell, the configuration number being indicative of a size of the cell. The UE selects a preamble parameter configuration from the fixed set of preamble parameter configurations in response to the received configuration number and then transmits a preamble from the UE to the nodeB using the preamble parameter configuration indicated by the configuration number.

公开(公告)号：US09319928B2

公开(公告)日：2016-04-19

申请号：US13744317

申请日：2013-01-17

Applicant: Texas Instruments Incorporated

Inventor： Pierre Bertrand ,  Jing Jiang ,  Anthony Ekpenyong

IPC: H04L12/26 ,  H04W28/02 ,  H04L1/00 ,  H04L1/20 ,  H04L1/18

CPC classification number: H04W28/0236 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017 ,  H04L1/0019 ,  H04L1/0027 ,  H04L1/1816 ,  H04L1/203

Abstract: A detailed design of an LTE Link Adaptation function for LTE uplink is disclosed. A new approach for adapting SINR backoff in OLLA is used when serving non-time-sensitive radio bearers without target BLER constraint. A sub-optimal scheduler is also disclosed wherein the SINR measurements at the ILLA input are updated on each TTI for the UEs scheduled in that sub-frame for future UL transmission with a fresher interference measurement from the sub-frame preceding by 8 ms the actual transmission sub-frame. This allows for exploitation of a correlation peak of the interference resulting from HARQ retransmissions. A schedule incorporating these features improves upon, with a minor complexity increase, the spectral efficiency performance of a low-complexity baseline scheduler only based on SINR updates at SRS rate.

Abstract translation: 公开了用于LTE上行链路的LTE链路适配功能的详细设计。 在不使用目标BLER约束的情况下服务非时间敏感的无线电承载时，将使用适用于OLLA中SINR退避的新方法。 还公开了一种次优调度器，其中在ILLAN输入处的SINR测量在针对在该子帧中调度的UE的每个TTI上被更新以用于将来的UL传输，其中来自前一个子帧的更新的干扰测量在8ms之前，实际 传输子帧。 这允许利用由HARQ重传产生的干扰的相关峰值。 仅基于SRS速率下的SINR更新，结合了这些特征的调度改进了低复杂度基线调度器的频谱效率性能，同时增加了较小的复杂度。

公开(公告)号：US09113460B2

公开(公告)日：2015-08-18

申请号：US14155091

申请日：2014-01-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Zukang Shen ,  Tarik Muharemovic ,  Jing Jiang

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0413 ,  H04L5/0053 ,  H04L5/0055 ,  H04W72/04 ,  H04W72/0406

Abstract: A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations on an uplink channel in a wireless network. A scheme for mapping between logical uplink control channel (PUCCH) resource blocks (RBs) and physical RBs (PRBs) used by PUCCH is described. A logical uplink control resource block index nLRB is derived by the secondary node in response to information from the primary node. The secondary node then maps the logical uplink control resource block index nLRB to a first uplink physical resource block index nPRB,1 of a plurality of uplink physical resource blocks, wherein nPRB,1=nLRB/2 if nLRB is even and nPRB,1=NPRB−ceil(nLRB/2) if nLRB is odd; wherein NPRB is the total number of the plurality of uplink physical resource blocks; and wherein ceil denotes the ceiling operation. The secondary node then transmits an uplink control information in a subframe using one of the plurality of uplink physical resource blocks indexed by nPRB,1.

Abstract translation: 信息从次级到主节点的传输在无线网络中的上行链路信道上的多个N个逻辑持续时间内发生。 描述了由PUCCH使用的逻辑上行链路控制信道（PUCCH）资源块（RB）和物理RB（PRB）之间的映射方案。 响应于来自主节点的信息，辅助节点导出逻辑上行链路控制资源块索引nLRB。 然后，辅助节点将逻辑上行链路控制资源块索引nLRB映射到多个上行链路物理资源块的第一上行链路物理资源块索引nPRB，1，其中如果nLRB为偶数，则nPRB，1 = nLRB / 2，并且nPRB，1 = NPRB-ceil（nLRB / 2）如果nLRB为奇数; 其中NPRB是多个上行物理资源块的总数; 并且其中ceil表示天花板操作。 然后，次级节点使用由nPRB，1索引的多个上行链路物理资源块中的一个，在子帧中发送上行链路控制信息。

公开(公告)号：US20150023329A1

公开(公告)日：2015-01-22

申请号：US14335546

申请日：2014-07-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jing Jiang ,  Mingjian Yan ,  Aleksandar Purkovic

IPC: H04W74/00 ,  H04W72/04 ,  H04W52/24

CPC classification number: H04W74/008 ,  H04B17/345 ,  H04J11/0036 ,  H04L27/2613 ,  H04L27/2675 ,  H04W28/18 ,  H04W52/241 ,  H04W52/243 ,  H04W52/325 ,  H04W52/50

Abstract: A wireless device includes a preamble detector configured to identify a plurality of preambles transmitted via a random access channel of a wireless network. The preamble detector includes a noise floor estimator. The noise floor estimator is configured to: estimate, for a given preamble root sequence identified by the preamble detector, a noise floor value as mean energy of received signal samples, excluding detected preamble samples on the give preamble root sequence, below a noise floor threshold assigned to the given preamble root sequence. The noise floor estimator is configured to compute the noise floor threshold as a product of: average energy of the received signal samples less total signal energy contained in each cyclic prefix window in which a preamble is detected using the given preamble root sequence; and a predetermined normalized relative noise floor threshold based on a target false preamble detection rate.

Abstract translation: 无线设备包括：前导码检测器，被配置为识别经由无线网络的随机接入信道发送的多个前同步码。 前导码检测器包括噪声基底估计器。 噪声基底估计器被配置为：对于由前导码检测器识别的给定前导码根序列，估计作为接收信号样本的平均能量的噪声本底值，不包括在给定前导根序列上的检测到的前导码样本，低于噪声基底阈值 分配给给定的前导根序列。 噪声基底估计器被配置为计算噪声基底阈值作为以下乘积的乘积：接收信号样本的平均能量减去包含在每个循环前缀窗口中的总信号能量，其中使用给定的前导根序列检测前置码; 以及基于目标假前同步码检测率的预定的归一化相对噪声基底阈值。

公开(公告)号：US20140341010A1

公开(公告)日：2014-11-20

申请号：US14326354

申请日：2014-07-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jing Jiang ,  Pierre Bertrand ,  Tarik Muharemovic

IPC: H04L5/00 ,  H04L27/26 ,  H04J13/00

CPC classification number: H04L5/0007 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/0074 ,  H04L27/2601 ,  H04L27/2607 ,  H04L27/2613 ,  H04W74/08

Abstract: Transmission of random access preamble structures within a cellular wireless network is based on the use of cyclic shifted constant amplitude zero autocorrelation (“CAZAC”) sequences to generate the random access preamble signal. A pre-defined set of sequences is arranged in a specific order. Within the predefined set of sequences is an ordered group of sequences that is a proper subset of the pre-defined set of sequences. Within a given cell, up to 64 sequences may need to be signaled. In order to minimize the associated overhead due to signaling multiple sequences, only one logical index is transmitted by a base station serving the cell and a user equipment within the cell derives the subsequent indexes according to the pre-defined ordering. Each sequence has a unique logical index. The ordering of sequences is identified by the logical indexes of the sequences, with each logical index uniquely mapped to a generating index. When a UE needs to transmit, it produces a second sequence using the received indication of the logical index of the first sequence and an auxiliary parameter and then produces a transmission signal by modulating the second sequence.

Abstract translation: 蜂窝无线网络内的随机接入前同步码结构的传输是基于使用循环移位恒幅零自相关（“CAZAC”）序列来生成随机接入前同步信号的。 按照特定顺序排列预定义的序列集合。 在预定义的序列集合内，是序列的有序组，其是预定义序列集合的适当子集。 在给定的小区内，可能需要发信号通知多达64个序列。 为了最小化由于信令多个序列引起的相关开销，仅由服务于小区的基站发送一个逻辑索引，并且小区内的用户设备根据预定义的顺序导出后续索引。 每个序列都有唯一的逻辑索引。 序列的顺序由序列的逻辑索引识别，每个逻辑索引唯一映射到生成索引。 当UE需要发送时，它使用接收到的第一序列的逻辑索引的指示和辅助参数产生第二序列，然后通过调制第二序列来产生传输信号。