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A method for monitoring wireless links in a heterogeneous network

A wireless link and heterogeneous network technology, applied in wireless communication, electrical components, etc., can solve problems such as serious interference problems, degradation of heterogeneous network handover performance, and small LPN cells.

Inactive Publication Date: 2017-06-16
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. In the case of co-frequency networking between the macro base station cell and the LPN cell, the interference problem will become very serious;
[0007] 2. Compared with the homogeneous network, the switching performance in the heterogeneous network is significantly reduced
The simulation results in the study show that the handover failure rate from the LPN cell to the macro base station cell in the heterogeneous network is the highest. The reason for this phenomenon is that the coverage of the LPN cell is small, and the terminals under the LPN cell can easily move out of the LPN cell. Coverage, but it is too late to handover to the macro base station cell, resulting in handover failure

Method used

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  • A method for monitoring wireless links in a heterogeneous network
  • A method for monitoring wireless links in a heterogeneous network
  • A method for monitoring wireless links in a heterogeneous network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1: Adjust RLF parameters based on the type of serving cell

[0056] In a heterogeneous network, different types of cells have different coverage areas, and the urgency of UE handover between different types of cells is different. For example, the urgency of the handover between Pico-Macro is much greater than the handover between Macro-Macro, because the transmission power of the Pico cell is small, and when the UE is far away from the Pico cell, the channel quality of the Pico cell will drop rapidly. The UE cannot establish a connection with the Macro cell as soon as possible, which may easily cause interruption of the connection with the Pico cell, resulting in handover failure.

[0057] According to the size of the coverage area, the types of cells can be divided into two types: the first type of cells and the second type of cells, wherein the transmission power and coverage of the second type of cells are greater than that of the first type of cells. The...

Embodiment 2

[0065]Embodiment 2: Adjusting RLF parameters based on the type of the serving cell and the neighboring cells of the serving cell

[0066] In addition to the type of the serving cell, the type of the neighboring cell of the serving cell (that is, the target cell for handover) will also affect the urgency of the handover. For example, Macro-Pico, Pico-Macro, Macro-Macro, and Pico-Pico handovers correspond to different demand. Therefore, the UE may use different values ​​of the Qout and N310 parameters according to the different types of the serving cell and the neighboring cells of the serving cell.

[0067] Embodiment 2 is more optimized than Embodiment 1, and the cost is also higher than Method 1, because the number of parameter combinations available to the UE is 4, while Embodiment 1 only has 2 groups. Specifically, when the serving cell of the UE is a first-type cell and the neighboring cell of the serving cell is a second-type cell, the UE uses the parameter {N310_1, Qout...

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Abstract

The present application discloses a method for monitoring wireless links in a heterogeneous network. The method is based on the existing wireless link quality monitoring process, and further includes the following steps: the user equipment UE obtains the cell type of the serving cell where the UE is located ; If the cell type of the serving cell is a first-type cell, set the N310 to N310_1, and set the Qout to Qout_1; if the cell type of the serving cell is a second-type cell, set the N310 is set to N310_2, and the first threshold value Qout is set to Qout_2; wherein, the transmission power and coverage of the second type of cell are greater than that of the first type of cell, N310_1 <n310_2，qout_1>Qout_2. The application also discloses another method for monitoring wireless links in a heterogeneous network. By applying the technical solution of this application, it is possible to detect in time that the channel quality between the user equipment UE and the LPN cell deteriorates, thereby terminating the recovery process of the link with the LPN cell in advance, so as to switch to a serving cell with better channel quality as soon as possible neighboring districts.< / n310_2，qout_1>

Description

technical field [0001] The present application relates to the field of mobile communication technology, in particular to heterogeneous network technology, and in particular to a method for monitoring wireless links in a heterogeneous network. Background technique [0002] As the types of data service applications become more and more extensive, and users' demand for data rates increases day by day, the traditional network architecture based on cellular coverage can no longer fully meet the requirements of new service features, which are mainly reflected in two aspects: (1) traditional cellular The indoor coverage of the network is poor; (2) The capacity of the traditional cellular network in business hotspots is far from meeting the demand. [0003] The reason why the traditional cellular network has poor indoor coverage is that the indoor penetration loss is relatively large. In addition, the operating frequency of the next-generation wireless communication system is relati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W36/30
Inventor 高伟东张欢池连刚潘瑜高兴航陈哲鲁智林佩
Owner POTEVIO INFORMATION TECH CO LTD