Invention Grant
US09054847B2 Uplink resource allocation to control intercell interference in a wireless communication system
有权
上行链路资源分配,以控制无线通信系统中的小区间干扰
- Patent Title: Uplink resource allocation to control intercell interference in a wireless communication system
- Patent Title (中): 上行链路资源分配,以控制无线通信系统中的小区间干扰
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Application No.: US13149058Application Date: 2011-05-31
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Publication No.: US09054847B2Publication Date: 2015-06-09
- Inventor: Nicholas William Anderson
- Applicant: Nicholas William Anderson
- Applicant Address: JP Tokyo
- Assignee: SONY CORPORATION
- Current Assignee: SONY CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Main IPC: H04J3/00
- IPC: H04J3/00 ; H04L5/00 ; H04W52/34 ; H04W72/14 ; H04L5/14 ; H04W16/14 ; H04W24/10 ; H04W48/16 ; H04W72/08 ; H04W72/12

Abstract:
Embodiments of the present invention exploit the reciprocity of radio channels in TDD, and longer-term correlation between average uplink and downlink path losses in FDD wireless communication systems to enable distributed schedulers in an enhanced uplink system to allocate uplink transmission resources while preemptively managing intercell interference levels. Each cell's base station transmits a downlink reference signal at a known transmission power level. A mobile station monitors the received signal strength of the downlink reference signals from multiple base stations. The transmitted and received signal strength levels can be used by the mobile station to estimate the amount of intercell interference that the mobile station's uplink transmissions cause, and the mobile station's uplink transmission parameters are adjusted accordingly. In further embodiments, the received reference signal power levels, or values derived therefrom, are transmitted by the mobile station to its serving base station, where a scheduling algorithm uses the information to adjust one or more transmission parameters relating to a grant of uplink transmission resources to the UE, thereby controlling the intercell interference generated by the mobile station's uplink transmissions.
Public/Granted literature
- US20110228712A1 UPLINK RESOURCE ALLOCATION TO CONTROL INTERCELL INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM Public/Granted day:2011-09-22
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