Invention Grant
- Patent Title: Preamble based uplink power control for LTE
- Patent Title (中): 基于前导码的LTE上行链路功率控制
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Application No.: US12030333Application Date: 2008-02-13
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Publication No.: US07986959B2Publication Date: 2011-07-26
- Inventor: Durga Prasad Malladi , Juan Montojo
- Applicant: Durga Prasad Malladi , Juan Montojo
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Darrell Scott Juneau; Jimmy Cheng
- Main IPC: H04B7/00
- IPC: H04B7/00

Abstract:
Systems and methodologies are described that facilitate utilizing power control preambles with closed loop power control techniques in a wireless communication environment. An uplink grant can be transferred over a downlink (e.g., a first uplink grant after uplink inactivity), and a power control preamble can be sent over an uplink in response to the uplink grant. According to an example, transmission of the power control preamble can be explicitly scheduled and/or implicitly scheduled. The power control preamble can be transmitted at a power level determined by an access terminal utilizing an open loop power control mechanism. A base station can analyze the power control preamble and generate a power control command based thereupon to correct the power level employed by the access terminal. The access terminal can thereafter utilize the power control command to adjust the power level for uplink data transmission.
Public/Granted literature
- US20080207150A1 PREAMBLE BASED UPLINK POWER CONTROL FOR LTE Public/Granted day:2008-08-28
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