Invention Grant
US08553795B2 Unified design and centralized scheduling for dynamic SIMO, SU-MIMO and MU-MIMO operation for RL transmissions
有权
用于RL传输的动态SIMO,SU-MIMO和MU-MIMO操作的统一设计和集中调度
- Patent Title: Unified design and centralized scheduling for dynamic SIMO, SU-MIMO and MU-MIMO operation for RL transmissions
- Patent Title (中): 用于RL传输的动态SIMO,SU-MIMO和MU-MIMO操作的统一设计和集中调度
-
Application No.: US12443796Application Date: 2007-10-30
-
Publication No.: US08553795B2Publication Date: 2013-10-08
- Inventor: Hao Xu , Durga Prasad Malladi
- Applicant: Hao Xu , Durga Prasad Malladi
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Kenyon S. Jenckes
- International Application: PCT/US2007/083057 WO 20071030
- International Announcement: WO2008/055179 WO 20080508
- Main IPC: H04B7/02
- IPC: H04B7/02

Abstract:
Systems and methods facilitate pilot signal design, power control, data rate determination, and channel assignment in the reverse link of a wireless communication system for dynamic scheduling and joint operation in SIMO, SU-MIMO, and MU-MIMO. Pilot signal is based on periodic transmissions of multiple sounding reference sequences for channel estimation. Power control is based on a reference signal at a predetermined power spectral density (PSD) level, and on an offset PSD determined and signaled based on an antenna that transmits the reference signal, other cell interference, and power amplifier headroom. PSD levels for SIMO/MIMO data transmissions are determined based on channel estimates and the predetermined PSD and offset PSD. Such data PSD levels are employed to generate data rates, and to dynamically schedule data streams for communication. Communication resources are conveyed through a channel assignment with an overhead that depends on the maximum multiplexing order of the estimated channel.
Public/Granted literature
Information query