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Systems and methods for reference crystal oscillator switching for wireless device transceivers

A wireless device, reference crystal technology, applied in transmission systems, discontinuous tuning with a separate pre-tuning circuit, adjustment of resonant circuits, etc., can solve problems such as high power consumption

Active Publication Date: 2021-03-02
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another disadvantage is that the power consumption of a high frequency XO can be 5 to 10 times greater than that of a 20-40 MHz XO

Method used

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  • Systems and methods for reference crystal oscillator switching for wireless device transceivers
  • Systems and methods for reference crystal oscillator switching for wireless device transceivers
  • Systems and methods for reference crystal oscillator switching for wireless device transceivers

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Embodiment Construction

[0036] The embodiments set forth below represent information to enable those skilled in the art to practice the embodiments and illustrate the best modes of practicing the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the invention and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications are within the scope of the invention and the appended claims.

[0037] Radio Node: As used herein, a "radio node" is a radio access node or wireless device.

[0038] Radio Access Node: As used herein, a "radio access node" is any node in a radio access network of a cellular communication network that operates to transmit and / or receive signals wirelessly. Some examples of radio access nodes include, but are not limited to, base stations (e.g., enhanced or evolved Node Bs (eNBs) in Third Generation...

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Abstract

Disclosed herein are systems and methods involving wireless devices that intelligently use different reference crystal oscillators (XOs) for phase-locked loops (PLLs) in the wireless device's transceivers. An embodiment of a method of operating a wireless device including a first XO operating at a first reference frequency and a second XO operating at a second reference frequency greater than the first reference frequency is disclosed. In some embodiments, a method of operating a wireless device includes making a decision as to whether to configure a receiver of the wireless device to use a first XO or a second XO, and configuring the receiver of the wireless device to use the first XO based on the decision. XO or second XO.

Description

technical field [0001] The present disclosure relates to switching between different reference crystal oscillators (XOs) for transceivers of wireless devices. Background technique [0002] With the introduction of fifth-generation (5G) cellular communication systems, new radio frequencies of 10 gigahertz (GHz) and higher are expected to be Used with 1 to 3 gigahertz carriers used in the deployment of cellular communication systems. In addition, 5G cellular communication systems are expected to support "fibre-replacement" mobile broadband (MBB) services ranging from low-power / low-cost machine-type communications (MTC) to data rates above 1 gigabit per second (Gb / s) various services and use cases. The latter use case requires high system bandwidth and will therefore be deployed on 10 GHz and beyond carriers. Furthermore, enhanced MBB typically requires higher order modulation (eg, 64 / 256 / 1024-Quadrature Amplitude Modulation (QAM)) and good signal-to-noise ratio (SNR). High...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/00H03J7/02H03L7/08
CPCH04B1/0082H04B1/005H04B1/401H03L7/099H03L7/08H03J5/00H03J5/242H03J7/02
Inventor 本特·林多夫马格努斯·阿斯特罗姆拉尔斯·桑德斯特罗姆
Owner TELEFON AB LM ERICSSON (PUBL)