Invention Grant
- Patent Title: Subcarrier group based power control for OFDMA systems
- Patent Title (中): 用于OFDMA系统的基于子载波组的功率控制
-
Application No.: US13685432Application Date: 2012-11-26
-
Publication No.: US08718081B2Publication Date: 2014-05-06
- Inventor: Manyuan Shen , Guanbin Xing
- Applicant: Adaptix, Inc.
- Applicant Address: US TX Plano
- Assignee: Adaptix Inc.
- Current Assignee: Adaptix Inc.
- Current Assignee Address: US TX Plano
- Agency: Martin & Ferraro, LLP
- Main IPC: H04J3/16
- IPC: H04J3/16

Abstract:
A system and method of wireless communication power control is provided which allows for adjusting power levels without requiring high bandwidth for control. Embodiments allocate subcarriers into unequal power groups, each group having a consistent subcarrier power level. Using interference parameter information from a user, a subcarrier is assigned from a group having adequate power to maintain the user's required power level. In general, users with higher power requirements, such as those near cell boundaries, will be assigned subcarriers from a group having a higher power level. A cell may use a different allocation than a neighbor, so that subcarriers with the highest power level in one cell may not also have the highest power level in a neighboring cell. Such diversity may reduce inter-cell interference of the subcarriers near a cell boundary, since no two subcarriers are transmitted with highest power simultaneously by neighboring base stations.
Public/Granted literature
- US20130077591A1 SUBCARRIER GROUP BASED POWER CONTROL FOR OFDMA SYSTEMS Public/Granted day:2013-03-28
Information query