Invention Grant
US08462737B1 System and method for a MIMO split-physical layer scheme for a wireless network
有权
用于无线网络的MIMO分离物理层方案的系统和方法
- Patent Title: System and method for a MIMO split-physical layer scheme for a wireless network
- Patent Title (中): 用于无线网络的MIMO分离物理层方案的系统和方法
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Application No.: US12163165Application Date: 2008-06-27
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Publication No.: US08462737B1Publication Date: 2013-06-11
- Inventor: William Gage
- Applicant: William Gage
- Applicant Address: CA Ontario
- Assignee: Research In Motion Limited
- Current Assignee: Research In Motion Limited
- Current Assignee Address: CA Ontario
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04L12/28 ; H04L12/56

Abstract:
The present application describes a system and method for dynamically employing split-physical layer (PHY) functionality across multiple access heads to establish multiple paths between a client device (CD) and an access network in order to address one or more of the above described coverage issues. In some embodiments multiple input multiple output (MIMO) space-time coding is employed. Space-time coding may include contemporaneously transmitting one spatial stream or multiple spatial streams through each access head. In some embodiments macro diversity is also employed. Macro transmit diversity may include transmitting a same signal, consisting of one or more spatial streams, from one or more access heads such that a CD can use a strongest signal of the signals transmitted from at least one access head or diversity combining of two or more of the transmitted signals to recover the transmitted signal at the CD. Space-time coding may include contemporaneously receiving one spatial stream or multiple spatial streams through each access head. Macro receive diversity may include receiving a same signal from a CD at one or more access heads such that a strongest signal of the signals received at one or more access heads can be used to recover a signal or diversity combining of two or more of signals received at different respective access heads can be used to recover the transmitted signal.
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