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Mehod of selecting cell and controller

A cell selection and control device technology, applied in the directions of access restriction, electrical components, multiplexing communication, etc., can solve the problems of increased interference between users, increased communication cutoff, sound quality degradation, etc., and achieves suppression of sound quality degradation and The effect of communication interruption and throughput improvement

Inactive Publication Date: 2011-08-31
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to the increase of inter-user interference only in a cell compatible with the W-CDMA system, other problems such as voice quality degradation and increased communication disconnection during calls conforming to the W-CDMA system are caused.

Method used

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  • Mehod of selecting cell and controller
  • Mehod of selecting cell and controller
  • Mehod of selecting cell and controller

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0038] Next, embodiments of the present invention will be described. Specifically, (1) the overall schematic structure of the mobile communication system, (2) a cell structure example, (3) the functional block structure of the wireless control device, (4) the operation of the wireless control device, (5) the used and Effects, (6) Other embodiments will be described.

[0039] In addition, in the following description of the drawings, the same or similar reference numerals are attached to the same or similar parts. Wherein, it should be noted that the drawings are schematic diagrams, and the proportions of various dimensions are not the same as the actual ones.

[0040] Therefore, specific dimensions and the like should be determined in consideration of the following description. In addition, it is needless to say that there are parts in which the relationship and ratio of dimensions are different between the drawings.

[0041] (1) Overall outline structure of mobile communic...

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PUM

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Abstract

A wireless controller (100A) is provided with a congestion level acquiring section (105) for acquiring the congestion levels of communication traffic handled in a finite number of overlaid cells, a priority giving section (107) for giving a higher selection priority to a cell with a lower congestion level according to the acquired congestion levels, and a control section (109) for selecting a cell to be allocated to a call compatible with a W-CDMA system on the basis of a given selection priority. The priority giving section (107) gives to an HSDPA-non-compatible cell a selection priority higher than that given to an HSDPA-compatible cell if a congestion level is less than a predetermined threshold, and gives the same selection priority to the HSDPA-non-compatible cell and the HSDPA-compatible cell if a congestion level is not less than the predetermined threshold.

Description

technical field [0001] The present invention relates to a cell selection method and a control device using a cell usable only in the first communication method (W-CDMA method) and a cell usable in both the first communication method and the second communication method (HSDPA method) cells, and, among each of the superimposed limited number of cells, select a cell to be assigned to a call complying with the first communication method. Background technique [0002] Conventionally, as a mobile communication system, there is known a W-CDMA system standardized in 3GPP (3rd Generation Partnership Project) and utilizing a Code Division Multiple Access (CDMA: Code Division Multiple Access) technology (for example, Non-Patent Document 1). In addition, in recent years, the HSDPA (High Speed ​​Downlink Packet Access) method for increasing the communication speed in the downlink direction has also been introduced (for example, Non-Patent Document 2). [0003] That is, in such a mobile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J13/00H04W48/16H04W72/04H04B1/707H04J13/16H04W16/04H04W16/10H04W48/18
CPCH04J13/16H04W72/0466H04W72/0486H04W72/52
Inventor 松谷英之小畑和则
Owner NTT DOCOMO INC