Method for increasing terminal receiving sensitivity and terminal

A terminal receiving and sensitivity technology, applied in the field of communications, can solve the problems of easy leakage of output signals, signal leakage, and large product volume, and achieve the effects of improving receiving sensitivity, reducing production costs, and reducing product volume

Active Publication Date: 2013-10-23
HYTERA COMM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the transmitting VCO is not turned off in the receiving time slot of the terminal, and the frequency of the receiving VCO and the transmitting VCO are the same in the time division duplex mode, the output signal of the transmitting VCO is easy to leak into the receiving channel, which affects the receiving sensitivity in the time division duplex mode
[0005] In the prior art, in order to solve the signal leakage of the transmitting VCO, the method of improving the receiving sensitivity in the time division duplex mode is: to shield the receiving path and the transmitting path, and improve the isolation between the transmitting and receiving paths, but this method requires that the transmitting and receiving paths be separated. It is far away, and multiple isolation switches need to be added to the circuit, not only the cost is high, but also the product volume is large

Method used

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  • Method for increasing terminal receiving sensitivity and terminal
  • Method for increasing terminal receiving sensitivity and terminal

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Embodiment 1

[0020] The present invention provides a method for improving the receiving sensitivity of the terminal. When the terminal works in the time division duplex mode, such as figure 1 As shown, the method includes:

[0021] 101. In the transmission time slot, make the above-mentioned terminal transmit the VCO frequency to be the first frequency;

[0022] 102. In a receiving time slot, make the frequency of the VCO transmitted by the terminal be a predetermined second frequency; the difference between the second frequency and the first frequency is at least one channel bandwidth.

[0023] In this embodiment, when the terminal works in the time division duplex mode, in the receiving time slot, the frequency of the VCO received by the terminal is also the first frequency, and the VCO transmitted by the terminal is not turned off at the same time, but since the first frequency and the second frequency differ by at least The bandwidth of a channel is reduced, that is, the transmitting ...

Embodiment 2

[0029] The present invention also provides a terminal, the terminal supports the time division duplex mode, when the terminal works in the time division duplex mode, the terminal includes:

[0030] The first frequency control unit is configured to make the terminal transmit the VCO frequency as the first frequency during the transmission time slot;

[0031] The second frequency control unit is configured to make the terminal transmit the VCO frequency to a predetermined second frequency during the receiving time slot; wherein, the predetermined second frequency and the first frequency differ by at least one channel bandwidth.

[0032] Further, the terminal may also include:

[0033] The third frequency control unit is configured to make the receiving VCO frequency of the terminal be the first frequency during the receiving time slot.

[0034] It should be noted that the above-mentioned first frequency control unit or the second frequency control unit or the third frequency co...

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Abstract

The embodiment of the invention relates to the technical field of communication and discloses a method for increasing a terminal receiving sensitivity and a terminal. When the terminal works in a time division duplex mode, the method comprises the following steps: in a transmitting time slot, the transmitting VCO (Voltage Controlled Oscillator) frequency of the terminal is enabled to be a first frequency; in a receiving time slot, the transmitting VCO frequency of the terminal is enabled to be a preset second frequency; and the preset second frequency and the first frequency are differed for at least one channel bandwidth. According to the method and the terminal, the receiving sensitivity of the terminal can be increased, the production cost of the terminal is reduced, and the volume of products is reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for improving the receiving sensitivity of a terminal and a terminal. Background technique [0002] In the field of digital wireless communication (DMR, Digital Mobile Radio), wireless communication systems require receivers to have high receiving sensitivity. [0003] The time-division duplex mode also becomes the same-frequency duplex mode. In the mobile communication system using the time-division duplex mode, reception and transmission are performed on the same frequency channel, that is, different time slots of the carrier, to avoid mutual interference between the transmitter and the receiver. [0004] When the terminal works in the time division duplex mode, since the transmitting frequency and the receiving frequency are the same, in order to avoid the influence of the transmitter on the sensitivity of the receiver, the usual practice is to turn off the tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/52H04B1/10H04B1/525
Inventor 陈凌伟
Owner HYTERA COMM CORP
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