基于多点信道海图的低能耗网络覆盖结构优化

Optimization of Low-Energy Overlay Network Structure Based on Multi-Channel Charting

资源小区覆盖结构是实现超高数据密度类业务场景的关键覆盖结构之一,其具有弹性可扩展、高能效按需覆盖的特点。依托这种覆盖结构,研究了一种基于多点信道海图的资源小区优化方法,旨在发射功率约束下提高系统和速率。将多点信道海图感知到的相邻用户划分到同一资源小区,通过在资源小区内分配正交资源块和在资源小区间复用正交资源块的方式,减少系统干扰并提升系统和速率。仿真结果表明,该方法能够有效提高系统和速率,不需要用户位置信息和瞬时信道状态信息,并且在相同系统和速率的情况下,资源小区覆盖结构可以有效降低网络能耗。

Resource cell coverage structure is one of the key coverage structures to achieve ultra-high data density scenarios,which has the characteristics of elastic scalability and high energy efficiency on-demand coverage.Relying on the above coverage structure,a multipoint channel charting-based resource cell generation method is proposed to improve sum system rate under transmit power constraint.Specifi⁃cally,adjacent users on multipoint channel charting are grouped into the same resource cell to reduce system interference and improve sum system rate by allocating orthogonal resource blocks within the resource cell and multiplexing RBs between resource cells,respectively.Simulation results show that the proposed method provides significant gain in capacity without requiring user location information or instan⁃taneous channel state information.It also indicates that the resource cell coverage structure can effectively reduce network energy con⁃sumption under the same sum system rate condition.