Method and system for scheduling mobile terminal to transmit ascending signal channel detection pilot frequency

Abstract

The invention discloses a method for dispatching a mobile terminal to transmit up-channel detection pilot frequency, comprising: obtaining vacancy resource in each transmission time interval wherein the vacancy resource comprises time frequency resource which is not used for transmitting up-channel data; allocating the vacancy resource for each mobile terminal and indicating mobile terminal to send up-channel detection pilot frequency for allocated vacancy resource. Thus, the time frequency resource in system can be reasonably allocated and the waste of time frequency resource can effectively prevented, the utilization ratio of time frequency resource can be increased to a certain degree. The invention also discloses a communication device and communication system.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for scheduling mobile terminals to send uplink channel detection pilots. Background technique [0002] In the communication system, the uplink pilot signal sent by the mobile terminal (UE) is mainly used for data demodulation and channel estimation. In the research of the Long Time Evolution (LTE) system, the uplink pilot signal is divided into the following Two types: [0003] 1. Uplink channel data demodulation (Demodulation, DM) pilot, used for coherent demodulation / detection of uplink data, also known as data demodulation reference signal; [0004] 2. An uplink channel sounding (Channel Sounding, CS) pilot, which is used for channel-based scheduling of the uplink in the frequency domain or / and time domain, and is also called a quality estimation reference signal. [0005] Usually, uplink data and CS pilot are not transmitted at the same time, or...

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Problems solved by technology

[0007] from figure 1 It can be seen that since the eNB needs to allocate fixed time-frequency resources for the transmission of CS pilots, the transmission of uplink data cannot be performed within the time period of sending CS pilots; and the transmission of uplink data usually does not occupy all the time-frequency resources, and a lot of idle idle resources ( figure 1 shown in the blank part)

Therefore, the allocation of time-frequency resources in the existing LTE system is unreasonable, which affects the utilization of time-frequency resources in the LTE system

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