A method and device for determining a target cell

A target cell and cell technology, applied in the field of communication, can solve the problems of increasing handover preparation delay, reducing user experience, dropped calls, etc., to achieve the effect of reducing handover preparation delay, improving user experience, and improving handover performance

Active Publication Date: 2018-10-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] Embodiments of the present invention provide a method and device for determining a target cell, which are used to solve the process of determining the target cell for the UE to be handed over by the serving base station of the UE in the prior art, which increases the delay of handover preparation and is easy Causes dropped calls, which degrades the user experience

Method used

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  • A method and device for determining a target cell
  • A method and device for determining a target cell
  • A method and device for determining a target cell

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Embodiment 1

[0093] Embodiment 1. Assume that 5 small cells are deployed within the coverage of macro cell A (macro cell A), that is, smallcell1~small cell5. For the network topology, see Figure 5 As shown, small cell1 and small cell3 have the same operating frequency and PCI, and the PCIs of other small cells are different. In this embodiment, each base station adopts method 1 to obtain the first location information of each cell controlled by itself, and the second location information is the longitude and latitude information of the location of the UE; for the process of determining the target cell by the macro base station provided in this embodiment, see Image 6 shown, including the following steps:

[0094] Step 61. The macro base station A obtains the first location information of each cell controlled by itself, and the small base station obtains the first location information of each cell controlled by itself;

[0095] Specifically, when deploying macro base station A (that is, ...

Embodiment 2

[0112] Embodiment 2, still with Figure 5 The network topology shown is taken as an example. This embodiment is similar to Embodiment 1. The difference is that in this embodiment, macro base station A adopts method 1 to obtain the first location information of each cell controlled by itself, and the macro base station A Each adjacent small base station acquires the first location information of each cell controlled by itself in mode 2;

[0113] Specifically, when the operator deploys macro base station A (that is, the base station where macro cell A is located), the operator configures the first location information of macro cell A; each small base station obtains the location information of the small cell it controls through its own positioning device. First location information.

Embodiment 3

[0114] Embodiment 3, still with Figure 5 The network topology shown is taken as an example. In this embodiment, small eNB1 has established an interface connection (such as X2 interface) with macro base station A, and then the serving cell small cell1 of small eNB1 changes its own configuration information (such as PCI, and changes The following PCI is exactly the same as the PCI of small cell3); in this embodiment, the macro base station determines the process of the target cell, see Figure 7 shown, including the following steps:

[0115] Step 71, small eNB1 sends an interface signaling message to macro base station A, and the interface signaling message carries the updated configuration information of smallcell1;

[0116] Wherein, the configuration information includes configuration parameters (the configuration parameters include operating frequency points and PCI, ECGI, TAC, etc.) and first location information;

[0117] Step 72: After receiving the interface signaling ...

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Abstract

The embodiment of the invention discloses a target cell determining method and device. The problems of long switching preparation delay and easy dropping in the prior art are solved. The method provided by the embodiment of the invention comprises the steps that after a service base station receives a measurement report sent by UE served by the service base station, the service base station searches adjacent cells matching the work frequency point and PCI of a target cell of a UE report in the measurement report from the adjacent cell relationship table, and takes the found adjacent cells as intermediate cells; and if at least two intermediate cells are found, according to first position information corresponding to each intermediate cell locally saved and second position information in the measurement report, the target cell of the UE report is determined from at least two intermediate cells. According to the embodiment of the invention, the UE simply needs to report the measurement report, and the target cell can be accurately determined; the switching preparation delay is reduced; and the probability of dropping caused by too long delay is reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and equipment for determining a target cell. Background technique [0002] In the heterogeneous layered deployment network of the Long Term Evolution (LTE) system, there may be overlapping coverage between the macro cell (macro cell) layer and the small cell (small cell) layer, that is, within the coverage of the macro cell , may deploy small cells at the same time. The so-called small cell refers to a cell provided by a low-power base station whose transmission power is lower than that of a common macro base station, for example, a pico cell (pico cell), a femto cell (femto cell), etc. are typical small cells. [0003] The physical layer of the LTE system defines a total of 504 physical cell identifiers (Physical Cell Identifier, PCI). In order to avoid inter-cell interference and enable the base station (eNB) to correctly identify each neighboring cell, the PCI...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W24/08
Inventor 王彦张大钧
Owner DATANG MOBILE COMM EQUIP CO LTD
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