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Local scheduler-based multi-point cooperative transmission method

A technology of multi-point coordination and transmission method, which is applied in the direction of network traffic/resource management, electrical components, wireless communication, etc., and can solve problems such as large amount of information

Inactive Publication Date: 2010-11-17
POTEVIO INFORMATION TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, in the current CoMP transmission technology, joint scheduling is used to determine the resources allocated to the UE by each coordinated cell. Before determining the resources allocated to the UE, it is necessary to recommend the PMI or PMI used by the coordinated cell on each time-frequency resource for the UE. Beam number, and use the recommended PMI or CQI information after beam number to interact, so that the amount of information exchanged between base stations is very large

Method used

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  • Local scheduler-based multi-point cooperative transmission method
  • Local scheduler-based multi-point cooperative transmission method
  • Local scheduler-based multi-point cooperative transmission method

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Embodiment Construction

[0062] In order to make the purpose, technical means and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0063] The basic idea of ​​the present invention is: after the UE resource scheduling is completed in the cell where the CoMP UE is located, only the resources recommended to other measurement cells on the time-frequency resources occupied by the UE are transmitted, and the time-frequency resources occupied by the UE are not , no longer transmit recommended resource information between base stations.

[0064] Generally, for users at the cell edge with low SINR values, the CoMP transmission method can effectively eliminate interference between adjacent cells and improve data reception performance; while for cell center users, SU-MIMO or MU-MIMO can provide higher performance gains , the CoMP transmission mode is not adopted. Therefore, the CoMP transmission mode is g...

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Abstract

The invention discloses a local scheduler-based multi-point cooperative transmission method, which comprises that: CoMP UE selects K cells from neighboring cells of a local cell as measurement cells and reports the channel state information (CSI) of the local cell and the measurement cells to the base station of the local cell according to MIMO modes and a CoMP types, which are supported by the local cell; the base station of the local cell performs UE scheduling and resource distribution according to the MIMO modes and CoMP types, which are supported by the local cell, and transmits the resources distributed to UE, the MIMO modes and CoMP types, which are supported by the local cell, as well as corresponding resources and CQI difference values, which are recommended to the corresponding measurement cells on the time-frequency resource occupied by the UE, to the cooperative cells; the measurement cells determine if to provide CoMP services and the CoMP types for the UE according to a cooperation message, wherein the measurement cells which provide CoMP services for the UE are cooperative cells; and the local cell and the cooperative cells transmit data for the UE according to the CoMP types.

Description

technical field [0001] The present invention relates to coordinated multi-point transmission (CoMP) technology, in particular to a method for coordinated multi-point transmission based on a local scheduler. Background technique [0002] In the LTE-A system, CoMP technology is introduced to realize inter-cell interference coordination and ensure the user's data rate and performance. This transmission scheme improves the user's communication quality by providing services to users through multiple cells. [0003] MIMO is the general term for system configuration multi-antenna transmission or multi-antenna reception technology. There are three types of MIMO technologies, SU-MIMO (Single User MIMO), MU-MIMO (Multi-User MIMO) and CoMP-MIMO (Multi-Point Cooperative MIMO, also Network MIMO) is used to improve user rate, system throughput and cell edge user communication quality. When a single cell base station serves a single user, it is called SU-MIMO; when a single cell base stat...

Claims

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Application Information

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IPC IPC(8): H04W28/16H04W72/04
Inventor 路杨王立江潘瑜张莉莉
Owner POTEVIO INFORMATION TECH
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