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A common mode method and system for GSM and LTE/LTE-A

An LTE-A and GSM frequency band technology, applied in wireless communication, electrical components, network planning, etc., can solve the problem of not improving the spectral efficiency of LTE/LTE-A systems, and achieve the effect of improving spectral efficiency and reducing design and manufacturing costs

Active Publication Date: 2015-12-16
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a GSM and LTE / LTE-A common mode method and system to solve the problem that the common mode scheme in the prior art cannot improve the spectral efficiency of the LTE / LTE-A system

Method used

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  • A common mode method and system for GSM and LTE/LTE-A
  • A common mode method and system for GSM and LTE/LTE-A
  • A common mode method and system for GSM and LTE/LTE-A

Examples

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Embodiment 1

[0048] This embodiment takes the GSM and LTE common mode as an example, specifically including:

[0049] First, according to the current GSM and LTE / LTE-A bandwidth configuration, determine the position where the GSM bandwidth is embedded in the LTE system bandwidth, and embed the GSM bandwidth as a subband in the determined position;

[0050] Considering that the LTE downlink pilot frequency spreads over the entire LTEDL bandwidth, in order to avoid direct mutual interference between the LTEDL pilot frequency and the GSM signal, the GSM bandwidth embedding position should be selected as much as possible on the LTE uplink system bandwidth;

[0051] The physical uplink control channel (PUCCH, PhysicalUplinkControlChannel) of the LTE uplink is located at both ends of the UL system bandwidth. In order to avoid interference between the GSM signal and the PUCCH, when the GSM bandwidth is embedded in the LTE uplink, the embedding position should avoid the PUCCH dedicated resources, a...

Embodiment 2

[0056] This embodiment takes the GSM and LTE common mode as an example, specifically including:

[0057] First, according to the current GSM and LTE / LTE-A bandwidth configuration, determine the position where the GSM bandwidth is embedded in the LTE system bandwidth, and embed the GSM bandwidth as a subband in the determined position;

[0058] In this embodiment, it is assumed that the GSM bandwidth does not meet the condition of being fully inserted into the uplink bandwidth of the LTE system. At this time, half of the GSM bandwidth is embedded in the uplink bandwidth of the LTE system, and the other half is embedded in the downlink bandwidth of the LTE system or placed in the LTE system. system bandwidth.

[0059] Among them, when some parts are embedded in the LTE system downlink bandwidth, there may be interference between the GSM signal and the LTE downlink pilot because the LTE downlink pilot frequency is throughout the entire LTE DL bandwidth; and when part is placed in...

Embodiment 3

[0064] This embodiment takes GSM and LTE-A common mode as an example, specifically including:

[0065] First, according to the current GSM and LTE / LTE-A bandwidth configuration, determine the position where the GSM bandwidth is embedded in the LTE-A system bandwidth, and embed the GSM bandwidth as a subband in the determined position;

[0066] Based on the principle of avoiding interference between LTE-A and GSM, this embodiment embeds the GSM bandwidth into the LTE-A uplink bandwidth; and the GSM bandwidth embedding position avoids the physical uplink control channel, such as image 3 shown.

[0067] It should be noted that the GSM system bandwidth is usually 1M to 2M wide, the LTE system bandwidth is usually 1.4M to 20M, and the LTE-A system bandwidth is usually 100M. It can be seen that the narrowband GSM bandwidth can usually be embedded in LTE-A In the uplink bandwidth of system A. Since the LTE-A system bandwidth is composed of multiple carrier components (CC, Componen...

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Abstract

Disclosed in the present invention are a common mode method and system for Global System for Mobile Communications (GSM) and Long Term Evolution / Long Term Evolution-Advanced (LTE / LTE-A), said common mode method comprising: embedding the GSM bandwidth as a sub-band in the LTE / LTE-A system bandwidth so as to enable a common carrier frequency for the GSM and LTE / LTE-A systems. The common mode scheme of the present invention achieves the technical effects of utilizing a single channel remote radio unit (RRU) simultaneously to support both GSM and LTE / LTE-A networks, lowering the RRU design and manufacturing costs, and simplifying the GSM system upgrade to a LTE / LTE-A system.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and system for GSM (Global System for Mobile communication, Global System for Mobile Communications) and LTE (Long Term Evolution, Long Term Evolution) / LTE-A common mode. Background technique [0002] With the development of wireless broadband communication technology and the continuous improvement of user needs, wireless spectrum resources, as a non-renewable resource, have become more and more precious. Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology is widely used in B3G (Beyond3rdGeneration) and 4G (4thGeneration) due to its high spectral efficiency and simple implementation, thus greatly improving the spectral efficiency. At present, LTE and LTE-A (LTE Advanced), the mainstream systems of B3G and 4G technologies, both adopt OFDM technology. [0003] Technological progress has indeed pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/02
CPCH04W88/10H04W16/02
Inventor 张庆宏王衍文
Owner ZTE CORP
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