Terminal equipment
A terminal device, a technology for transmitting local oscillators, applied in the field of communication, can solve the problems of power loss, limited storage power of terminals, etc., and achieve the effect of energy saving
Active Publication Date: 2012-05-16
CHINA MOBILE COMM GRP CO LTD
View PDF5 Cites 8 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0014] Since the power stored in the terminal is very limited, energy saving is one of the key elements that need to be considered, and the local oscillator circuit in the RF chip is the main power-consuming component, so two local oscillators working at the same time in TDD mode will bring huge power. loss
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] In the existing TDD system, the uplink frequency band and the downlink frequency band are completely the same. When the TDD system and the FDD system are deployed in combination, a guard band is usually reserved between the TDD frequency band and the FDD frequency band to avoid uplink and downlink interference between different systems, and the guard band between the FDD uplink frequency band and the TDD frequency band is low The end guard band, the guard band between the FDD downli...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the invention discloses terminal equipment, which comprises a transmitter and a receiver, wherein the transmitter and the receiver comprise a mixer respectively; the mixer of the transmitter is connected with a transmitting local oscillator; the mixer of the receiver is connected with a receiving local oscillator; and the transmitting local oscillator and the receiving local oscillator share a transmitting and receiving control signal. By applying the technical scheme provided by the embodiment of the invention, the transmitting local oscillator and the receiving local oscillator are controlled through a transmitting and receiving signal, so that the transmitting local oscillator and the receiving local oscillator can alternately work to transmit and receive the signal; and therefore, the energy consumption of the transmitting local oscillator and the receiving local oscillator of the terminal equipment can be saved on the premise of not increasing the cost and the complexity of a terminal radio frequency chip.
Description
technical field [0001] The present invention relates to the technical field of communications, in particular to a terminal device. Background technique [0002] The basic principle of the existing TDD (Time Division Duplexing) system is to use the same frequency band and frequency point for uplink and downlink, and use different time slices (time slots) to transmit uplink and downlink information during work, such as TD-SCDMA system, TD-LTE system. [0003] Such as figure 1 Shown is a schematic diagram of the TD-SCDMA time slot structure in the prior art. [0004] in such as figure 1 In the frame structure shown, the downlink signals use TS0, TS4, TS5, and TS6, and the uplink signals use TS1, TS2, and TS3, which are distinguished in the time domain, and the frequency bands and frequency points used for the uplink and downlink are the same, as shown in figure 2 Shown is a schematic diagram of TDD independent frequency spectrum in the prior art. [0005] For the terminal...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/38H04W52/02
CPCY02D30/70
Inventor 张大伟王大鹏程广辉许灵军李男王东
Owner CHINA MOBILE COMM GRP CO LTD