中文摘要：

文章构建了全球研发领先的88家通信及技术设备制造类企业的技术创新竞争关系网络和合作关系网络。用宽度和深度测量了知识基础结构，用直接和间接关系测度了合作关系网络结构。基于负二项回归模型的实证表明知识深度正向作用核心技术创新绩效，知识宽度对核心技术创新绩效存在倒U型影响。在合作关系网络中，当直接关系大于行业均值时，直接关系对核心技术创新绩效才具有促进作用；当知识宽度和深度处于高水平时，间接关系对核心技术创新绩效才具有显著正向作用。

英文摘要：

The innovation competition network and the collaboration network of 88 firms in the telecommunication and technol-ogy hardware industry were constructed. The width and depth were used to measure the knowledge base, direct ties and indi-rect ties were used to measure the collaboration network. Negative binomial regression models show that the depth of the knowl-edge base has a significant positive influence on core technology innovation. An inverted U-shaped relationship is found be-tween the width of knowledge base and core technology innovation. Direct ties have a U-shaped effect on core technology innova-tion. If the knowledge width and depth are above the high level,the indirect ties would have positive influence on core technolo-gy innovation.