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Pilot frequency processing method

A processing method and pilot technology, applied in the field of communication, can solve the problems of inter-cell interference, lack of consideration in pilot design, unreasonable compatibility between cooperative and non-cooperative modes, etc., and achieve the effect of improving capacity, good compatibility, and suppressing interference.

Active Publication Date: 2010-01-27
ZTE CORP
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Problems solved by technology

[0006] The present invention is made in consideration of the above problems. Therefore, the main purpose of the present invention is to provide a pilot processing method to solve the inter-cell interference and impact caused by the lack of consideration of the pilot design in the existing cooperative MIMO technical solution The use and throughput of cell edge users, and the compatibility of cooperative and non-cooperative modes unreasonably affect user experience

Method used

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Embodiment Construction

[0030] method embodiment

[0031] In this embodiment, a pilot processing method is provided. This method considers how to improve the performance and throughput of the system from a more comprehensive point of view, and considers how to achieve compatibility with the current system.

[0032] figure 1 The structure of a cooperative MIMO system to which this method is applied is shown. Such as figure 1 As shown, the system includes encoding module (process), modulation (MOD) (module), multi-antenna processing module, resource element mapping (Resource element mapping) (module), OFDM generation (module), and connection to OFDM generation (module ), the antenna group 1 and the antenna group 2 correspond to the BS antenna port and the RS antenna port respectively.

[0033] To achieve the above goals, the method needs to consider the following three factors:

[0034] First, in the cooperative MIMO, the design scheme of the pilot frequency cannot cause too much influence on the ...

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Abstract

The invention discloses a pilot frequency processing method, which comprises the following steps: grouping antennae of an emission source performing network-level cooperation to obtain a plurality of antenna groups, wherein the number of the antenna groups is equal to that of emission antennae supported by service cells in a non-cooperative state; configuring the pilot frequencies of the plurality of the antenna groups so that the pilot frequencies between the antenna groups are orthogonal with each other; and the pilot frequency patterns of the plurality of the antenna groups are in one-to-one correspondence with that of the emission antennae supported by the cells in the non-cooperative state. By using the method, the good compatibility of a cooperative mode and a non-cooperative mode can be achieved, the interferences between the cells are inhibited effectively, and simultaneously all the antennae can be used sufficiently to perform data transmission, and the capacity, the throughput rate and the link performance of a system are improved.

Description

technical field [0001] The present invention relates to the communication field, and in particular, to a pilot processing method. Background technique [0002] In order to provide high throughput and solve inter-cell interference problems, a new generation of wireless communication systems (such as the evolved long-term evolution system (Long-Term Evolution advance, LTE-Advance), super 3G technology (also known as International MobileTelecommunication advance, referred to as IMT-Advance)) considers the introduction of cooperative MIMO technology between network levels. [0003] Cooperative Multiple Input Multiple Output (MIMO) refers to transmission between different transmission sources (for example, different base stations (base Station, BS), different relay stations (Relay Station, RS), or a combination of BS and RS) The cooperation of transmitting antennas is used to improve the performance of the receiver to receive signals, which can be mainly used to solve the proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L27/26
Inventor 孙云锋姜静张颖光朱常青赵楠
Owner ZTE CORP
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