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Method and apparatus for determining UE ownership AP

A technology for judging device and channel quality, applied in wireless communication, electrical components, etc., can solve problems that cannot be completely solved, such as inconsistent characteristics of uplink and downlink channels, and achieve the effect of improving frequency efficiency and cell throughput

Inactive Publication Date: 2014-06-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the FDD system, the carrier frequency of the uplink and downlink is different, the characteristics of the uplink and downlink channels are inconsistent, and the power difference can reach more than 10dB. At this time, it is not appropriate to judge whether the UE belongs to the AP or handover only by the measurement results of the uplink channel.
Therefore, this solution cannot completely solve the problem of judging the UE's belonging AP when multiple APs belong to the same logical cell networking type.

Method used

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  • Method and apparatus for determining UE ownership AP
  • Method and apparatus for determining UE ownership AP

Examples

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Embodiment 1

[0069] The technical solution of this embodiment is applicable to a wireless communication system, especially an LTE-A system. In the LTE-A heterogeneous network, a new networking type is introduced: that is, there are multiple low-power APs within the coverage of a macro station, and the macro station and the APs within its coverage share a cell ID, belonging to the same logical cell. In order to improve spectrum efficiency and cell throughput, it is necessary to multiplex resources between macro stations and multiple low-power APs, so it is necessary to know which AP or several APs serve each UE, that is, it is necessary to judge which AP the UE belongs to. When the number of APs in the same logical cell exceeds the number of CSI-RS ports or port sets used for RSRP measurement and reporting, using RSRP based on CSI-RS feedback to judge cannot solve the problem that multiple APs belong to the same logical cell networking type In the above, it is a matter of judging that the ...

Embodiment 2

[0098] The technical solution of this embodiment is applicable to a wireless communication system, especially an LTE-A system. In the LTE-A homogeneous network, a new networking type appears: that is, a site shares a cell ID with several adjacent sites, that is, there are multiple APs under the same logical cell. In order to improve spectrum efficiency and cell throughput, resource multiplexing among multiple APs is required, so it is necessary to know which AP or APs each UE is served by, that is, it is necessary to judge the AP to which the UE belongs. When the number of APs in the same logical cell exceeds the number of CSI-RS ports or port sets used for RSRP measurement and reporting, using RSRP based on CSI-RS feedback to judge cannot solve the problem that multiple APs belong to the same logical cell networking type In the above, it is a matter of judging that the UE belongs to the AP. In the FDD system, the fading and path loss of the uplink and downlink channels are d...

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Abstract

The invention provides a method and apparatus for determining a UE ownership AP, and belongs to the field of wireless communication. The method comprises: respectively measuring the uplink channel quality of multiple APs from within UE to the same logic cell, and selecting an AP primary selection subset from the multiple APs according to obtained uplink channel quality information; and measuring the downlink channel quality from the APs in the AP primary selection subset to the UE, and determining the ownership APs of the UE according to obtained downlink channel quality information. The technical scheme provided by the invention can solve the problem of determining the ownership APs of the UE in a networking type in which multiple points belong to the same logic cell, and can apply a determining result to the switching of the ownership APs.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for judging that a UE belongs to an AP. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) standard and LTE-A (Long Term Evolution-Advanced, enhanced long-term evolution) standard, a new networking type appears, where multiple sites (Points) share a cell ID, That is, multiple APs (Access Points, access points) belong to one logical cell. This networking type can be applied to homogeneous networks or heterogeneous networks. In this type of networking, in order to improve spectrum efficiency and cell throughput, it is necessary to multiplex resources between different sites in the same logical cell, then it is necessary to know which or which Several APs perform user plane data transmission, that is, it is necessary to determine the AP to which the UE belongs. [0003] In the current LTE standard, during the cell h...

Claims

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Application Information

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IPC IPC(8): H04W24/08H04W24/10
Inventor 黄琛张冬英李楠阮玉峰张芳袁熹
Owner ZTE CORP
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