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Pilot frequency processing method, device and mobile terminal

A technology of a mobile terminal and a processing method, which is applied in the field of communication, can solve problems such as not providing public pilots, and achieve the effect of saving expenses

Inactive Publication Date: 2010-08-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is proposed in view of the problem of how to deal with common pilots in coordinated multi-point transmission that is not provided in the related art. Therefore, the main purpose of the present invention is to provide an improved pilot processing scheme to solve the above problems

Method used

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  • Pilot frequency processing method, device and mobile terminal
  • Pilot frequency processing method, device and mobile terminal
  • Pilot frequency processing method, device and mobile terminal

Examples

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Embodiment 1

[0064] This embodiment will describe the situation that each coordinated cell corresponds to one common pilot, and the specific implementation process is as follows:

[0065] (1) Each cooperative cell is based on image 3 and Figure 4 The transmission pattern of precoded pilots when four coordinated cells are mapped is described below.

[0066] image 3 It is a schematic diagram of a mapping pattern between pilots and physical resource blocks when four coordinated cells cooperate under the normal cyclic prefix frame structure according to Embodiment 1 of the present invention, as shown in image 3 As shown, the frame structure shows 12 subcarriers and common pilots corresponding to 14 OFDM symbols, where coordinated cell 1 is mapped to the 0th common pilot, that is, R 0 Indicates the common pilot sent by the coordinated cell 1, and the coordinated cell 2 is mapped to the first common pilot, that is, R 1 Indicates the common pilot sent by the coordinated cell 2, and the co...

Embodiment 2

[0081] This embodiment will describe the situation that each group of coordinated cells corresponds to one common pilot, and the specific implementation process is as follows:

[0082] (1) The high-level groups the participating cooperative cells, and each group of cooperative cells is mapped to a common pilot. The grouping conditions here include one group, two groups, three groups, and four groups.

[0083] The following pass Figure 9 with Figure 10 The transmission pattern of the common pilot (that is, the above-mentioned precoded pilot) when there are four groups of coordinated cells is described.

[0084] Figure 9 It is a schematic diagram of a mapping pattern between pilots and physical resource blocks when four groups of coordinated cells cooperate under the normal cyclic prefix frame structure according to Embodiment 2 of the present invention, as shown in Figure 9 As shown, the frame structure shows 12 subcarriers and common pilots corresponding to 14 OFDM symb...

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Abstract

The invention discloses a pilot frequency processing method, a device and a mobile terminal. The method is applied to a cooperative multi-point transmission system comprising a plurality of cooperative cells and comprises the following steps of: carrying out multi-antenna processing on a precoding pilot frequency to be transmitted by each cooperative cell in the plurality of cooperative cells; and transmitting the precoding pilot frequency processed by multiple antennas according to a time frequency position of a common pilot frequency in a physical resource block. The invention saves the expenditures of the pilot frequency.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a pilot processing method and device, and a mobile terminal. Background technique [0002] In order to improve the throughput of cells and perform interference coordination between cells, a new generation of wireless communication systems, for example, an advanced long-term evolution system (Long-Term Evolution Advance, referred to as LTE-Advance), an advanced international wireless communication system (International MobileTelecommunication Advance, IMT-Advance for short) and the like have introduced a coordinated multipoint transmission technology (Coordinate Multipoint Transmission and Reception, COMP for short) between network levels. [0003] At present, in the 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as 3GPP) LTE, a common pilot mapping method has been defined, and the common pilot here can be used as a reference signal for chann...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04B7/02
Inventor 姜静田开波
Owner ZTE CORP
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