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Method, system, base station and terminal for transmitting upstream channel quality estimation pilot frequency

A channel quality estimation and terminal technology, which is applied in the transmission system, baseband system components, electrical components, etc., can solve the problem that LTE does not have a clear way to notify the pilot transmission pattern, and achieve high reliability.

Inactive Publication Date: 2008-10-08
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The above modified pilot transmission pattern needs to be notified by the base station to the terminal, however, there is no clear method for notifying the pilot transmission pattern in LTE at present

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  • Method, system, base station and terminal for transmitting upstream channel quality estimation pilot frequency
  • Method, system, base station and terminal for transmitting upstream channel quality estimation pilot frequency
  • Method, system, base station and terminal for transmitting upstream channel quality estimation pilot frequency

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Embodiment Construction

[0056] The present invention provides a method for transmitting uplink channel quality estimation pilot, which may be to notify the terminal of the CS pilot transmission pattern through the control PDU, and the terminal transmits the CS pilot according to the received CS pilot transmission pattern. The CS pilot transmission pattern includes a combination of one or more factors among factors such as transmission period, frequency bandwidth, frequency band position, starting frequency band position, and corresponding CS pilot code.

[0057] In order to achieve the purpose of the present invention, a feasible method is: adding a pattern informing the terminal to send the CS pilot in the physical layer control channel sent by the base station to the terminal, and then the terminal sends the CS pilot according to the received pattern.

[0058] However, since the adopted control channel needs to schedule data in order to meet the system requirements, in this method, the task of sched...

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Abstract

The invention discloses a method of sending upstream channel quality estimation pilot frequency, comprising: informing an upstream channel quality estimation pilot frequency sending pattern via a controlling protocol data unit; sending the upstream channel quality estimation pilot frequency according to the informed sending pattern in the controlling protocol data unit. A base station can respond to a request of gaining the sending pattern sent by a terminal, or the base station actively informs the upstream channel estimation pilot frequency sending pattern to keep constant. The invention also discloses a corresponding system, the base station and the terminal. Making use of the invention can realize to sending the upstream channel quality estimation pilot frequency according to the informed sending pattern, so as to finish upstream channel quality estimation. And the course guarantees a high reliability of informing the sending pattern because of adopting the controlling protocol data unit.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and system for transmitting uplink channel quality estimation pilots, a base station and a terminal. Background technique [0002] In existing 3G systems, uplink pilots are mainly used for data demodulation and channel estimation (channel estimation refers to estimating channel phase and impulse response, etc.), and are always sent together with data, which does not require scheduling. For example, in a WCDMA system, an uplink pilot is sent in an uplink dedicated physical control channel (Dedicated Physical Control Channel, DPCCH), and the uplink pilot carried on the DPCCH is mainly used for auxiliary data demodulation, and the channel is used for A dedicated physical data channel (Dedicated Physical Data Channel, DPDCH) for sending data is sent together, and the frequency band and time occupied by the uplink pilot on the DPCCH are fixed and do not...

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Application Information

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IPC IPC(8): H04L25/02H04B1/707H04L29/06
Inventor 高卓谌丽李国庆蒋海林
Owner CHINA ACAD OF TELECOMM TECH