Collocation method of novel type carrier wave, base station and user terminal

A new type of carrier and user terminal technology, applied in electrical components, wireless communication, network planning, etc., can solve the problem that LTE user terminals cannot use non-backward compatible carriers, and achieve the effect of improving data rate and system capacity

Inactive Publication Date: 2013-09-04
苏州中氟化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, at least one backward compatible carrier in the carrier set can work independently. This backward compatible carrier is also called the primary component carrier, and the non-backward compatible That is to say, the new type of carrier mentioned in the present invention, its specific configuration has yet to be determined. At present, its design idea is to minimize the transmission of reference signals and control channels, so that more physical resource units can be vacated for data transmission. This saves system overhead and improves energy utilization efficiency; it should be noted that the current version of LTE user terminals cannot use non-backward compatible carriers

Method used

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  • Collocation method of novel type carrier wave, base station and user terminal
  • Collocation method of novel type carrier wave, base station and user terminal
  • Collocation method of novel type carrier wave, base station and user terminal

Examples

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Embodiment 1

[0070] Figure 2a It is a configuration pattern in which the system bandwidth of the new type carrier is equal to 1.4 MHz. As shown in the figure, the cell reference signal is configured on 4 subframes in one radio frame, and its configured bandwidth is the entire system bandwidth, that is, 1.4 MHz.

[0071] It can be further seen from the figure that the cell reference signal is specifically configured on a subframe (Subframe, SF) {#0, #1, #5, #6} in a radio frame; where subframe #0 and subframe #1, Subframe #5 and subframe #6 are adjacent to form two adjacent subframe pairs, and the time interval between two adjacent subframe pairs is exactly half of the length of a radio frame.

[0072] The benefit of this configuration is that the duration interval between two adjacent subframes is smaller than the coherence time of the wireless propagation environment and is the smallest among all subframes, which helps to improve the performance of time-frequency tracking; The interval...

Embodiment 2

[0077] Figure 3a It is a configuration pattern in which the system bandwidth of the new type carrier is equal to 5 MHz. As shown in the figure, the cell reference signal is configured on two subframes in one radio frame, and its configured bandwidth is the entire system bandwidth. It can be further seen from the figure that the cell reference signal is specifically configured on the subframe {#0, #5} in a radio frame; the time interval between two configured subframes is exactly half of the length of a radio frame.

[0078] As mentioned above, setting the interval between two configuration subframes to half of the radio frame length helps average sampling in one radio frame to improve the performance of physical signal measurement. On the condition that this premise is met, the subframe configuration in this embodiment is not limited to subframes {#0, #5}, and there are options such as subframes {#1, #6}, subframes {#4, #9}, etc.

[0079] Figure 3b shown in Figure 3a Th...

Embodiment 3

[0083] Figure 4a It is another configuration pattern in which the system bandwidth of the new type carrier is equal to 5MHz. As shown in the figure, the cell reference signal is configured on a subframe {#0, #1} in a radio frame, that is, a group of adjacent subframe pairs, and its configured bandwidth is the entire system bandwidth.

[0084] As mentioned above, configuring the cell reference signal on a group of adjacent subframe pairs helps to improve time-frequency tracking performance. On the condition that this premise is met, the subframe configuration in this embodiment is not limited to subframes {#0, #1}, and there are options such as subframes {#5, #6}, subframes {#8, #9}, etc.

[0085] Figure 4b shown in Figure 4a The performance of physical signal measurement under configuration;

[0086] Figure 4c shown in Figure 4a Configure the performance of time-frequency tracking;

[0087] From Figure 4band Figure 4c It can be seen that all can meet the requir...

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Abstract

The invention discloses a collocation method of a novel type carrier wave, a base station and a user terminal, which is applied in a carrier aggregation network in LTE-A (Long Time Evolution-Advanced) wireless communication. The flexible configuration of the novel type carrier wave is realized in a carrier aggregation scene through the method, the base station and the user terminal provided by the invention, redundant cell reference signal transmission is reduced, the system source expenditure is reduced, the spectral efficiency is improved, the interference of reference signals among different cells can be reduced, and the robustness of different applicable network environments can be increased through the flexible configuration.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method for configuring a new type of carrier, a base station and a user terminal in an LTE-A wireless communication system in a carrier aggregation application scenario. Background technique [0002] In order to meet the technical requirements of the International Telecommunication Union ITU for IMT-Advanced, the 3GPP standard organization submitted the technical documents of LTE-Advanced to the International Telecommunication Union in 2009, and formally initiated projects for related technologies in LTE-Advanced, including the carrier aggregation technology. Long Term Evolution Advanced (LTE-Advanced) is an evolved version of LTE, except that it meets or exceeds 3GPP TR25.913: "Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (Evolved Universal Terrestrial Radio Access and Evolved In addition to all the relevant requirements of the Universal Terrestrial R...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W72/04
Inventor 李文斌
Owner 苏州中氟化学有限公司
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