公开(公告)号：US20150229435A1

公开(公告)日：2015-08-13

申请号：US14617853

申请日：2015-02-09

Applicant: Centre of Excellence in Wireless Technology

Inventor： Sheetal Kalyani ,  Narendran Kishnan ,  Saishankar Katri Pulliyakode

IPC: H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W24/06

CPC classification number: H04L1/0009 ,  H04L1/0003 ,  H04L1/0016 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/0035 ,  H04L1/1607 ,  H04L1/1812 ,  H04L5/0057 ,  H04W24/06

Abstract: The embodiments described herein provide a method and system for improve link adaption performance in wireless networks. The method for modifying the MCS index for transmission using a computed offset is provided. The offset is calculated based on HARQ feedback of transmissions. A transition probability matrix with plurality of MCS indices is used for selecting the MCS index for transmission based on the highest probability of transition. A pattern sequence of MCS indices is formed and the presence of the pattern is determined in the history of the HARQ transmissions. The frequency of the pattern presence is also determined and the MCS index is selected for the HARQ transmissions. A frequency database of MCS indices is built using source encoding techniques. The transition probabilities that are estimated from the frequency database along with a cost function associated with each MCS index will be used to compute next MCS index.

Abstract translation: 本文描述的实施例提供了一种用于改善无线网络中的链路适应性能的方法和系统。 提供了使用计算的偏移来修改用于传输的MCS索引的方法。 基于传输的HARQ反馈来计算偏移。 使用具有多个MCS索引的转移概率矩阵，用于基于最高转换概率来选择用于传输的MCS索引。 形成MCS索引的模式序列，并且在HARQ传输的历史中确定模式的存在。 还确定了模式存在的频率，并且为HARQ传输选择了MCS索引。 使用源编码技术构建MCS索引的频率数据库。 从频率数据库估计的转移概率以及与每个MCS索引相关联的成本函数将用于计算下一个MCS索引。