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Carrier wave mapping method in coordinated multiple point transmission

A multi-point coordination and carrier mapping technology, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve problems such as no clear solution description

Active Publication Date: 2010-07-07
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when each transmission node is performing subcarrier mapping in its own cell, there is no clear description of how to deal with it.

Method used

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  • Carrier wave mapping method in coordinated multiple point transmission
  • Carrier wave mapping method in coordinated multiple point transmission
  • Carrier wave mapping method in coordinated multiple point transmission

Examples

Experimental program
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Embodiment Construction

[0044] figure 1 Flowchart for CoMP transmission, such as figure 1 As shown, the specific process of implementing CoMP transmission includes the following steps:

[0045] Steps 101 to 102: UE measures the received signal power of the serving cell and neighboring cells, and the UE makes an uplink report and feeds back the measurement results.

[0046] Step 103: The system selects a coordinating node according to the measurement results and in combination with the load and resource allocation of adjacent cells.

[0047] Step 104: The serving node and the coordinating node respectively perform pilot and data mapping according to the subcarrier mapping manner. A registration node where a user equipment (UE, User Equipment) is located is called a serving node, and other nodes participating in CoMP transmission are called coordinating nodes.

[0048] Step 105: The serving node and the coordinating node participating in the CoMP transmission perform signal transmission.

[0049] T...

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Abstract

The invention discloses a carrier wave mapping method in coordinated multiple point transmission and provides corresponding solutions aiming at two application scenes of at least transmitting a common pilot frequency in the coordinated resource of an LTE (Long Term Evaluation) system and of at least transmitting a CoMP (Coordinated Multiple Point) dedicated pilot frequency in the coordinated resource of the LTE system. In the scene of at least transmitting the common pilot frequency in the coordinated resource of the LTE system, when a coordinated node carries out the data mapping according to the data mapping mode of a service node and the RE for transmitting data conflicts with the RE with a current node for transmitting the common pilot frequency or a control signalling, corresponding data are not transmitted to an RE (Resource Unit) and only the corresponding common pilot frequency or the control signalling is transmitted; or the common pilot frequency and the data or the control signalling and the data are weighted, and the weighted superposition data are transmitted to the RE. In the invention, under the premise of not influencing an LTE system frame, the CoMP transmission technology is effectively utilized, the resources at the edge of a cell are uniformed to provide the service for one user so that the edge spectrum efficiency is improved and the computation complexityis not increased.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to each transmission in a coordinated multi-point (CoMP, Coordinated Multiple Point) transmission (CoMP transmission and reception) applied to an advanced long-term evolution (LTE-A, Long Term Evaluation-Advanced) system The carrier mapping method of the node. Background technique [0002] With the introduction of LTE-A requirements, people pay more and more attention to the average spectrum efficiency of the cell and the spectrum efficiency of the cell edge. In comparison, the spectral efficiency of the cell edge is more concerned by people. This is mainly because the uplink and downlink of the LTE-A system is a frequency division system based on Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing), which is different from the traditional code division multiple access (CDMA, Code Division Multiple Access) is different from the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W72/00
CPCH04W72/04
Inventor 田开波孙云锋李峰朱常青姜静赵楠张峻峰
Owner ZTE CORP
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