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Methodsof reconfiguring cell in cellular mobile radio system

A radio system, cellular technology, used in radio/induction link selection and arrangement, wireless communication, network planning, etc., can solve problems such as unsatisfactory signal transmission, and achieve the effect of reducing and avoiding reconfiguration

Inactive Publication Date: 2003-11-12
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is not ideal to use TCH for signaling, except during short periods of unexpected traffic peaks

Method used

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  • Methodsof reconfiguring cell in cellular mobile radio system
  • Methodsof reconfiguring cell in cellular mobile radio system
  • Methodsof reconfiguring cell in cellular mobile radio system

Examples

Experimental program
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Embodiment Construction

[0030] Figure 1 shows a general cell in a prior art cellular mobile radio system. Each cell has a given number or set of radio channels, including traffic channels and dedicated control channels. One or more meshes can be grouped together to form a so-called location area LA.

[0031] When entering such a location area, the mobile station must register itself. This requires the use of a dedicated control channel, eg in the GSM system, the so called Standalone Dedicated Control Channel SDCCH. However, the present invention is not limited to the independent dedicated control channel SDCCH, but the method of the present invention is applicable regardless of whether the dedicated control channel is converted from a traffic channel or converted back to a traffic channel.

[0032] Figure 2 shows in more detail the cell of Figure 1, together with the base stations B1-B4 serving the four cells C1, C2, C3, C4. The cells C1 and C3 are arranged along the boundary L of the positioning ...

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PUM

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Abstract

This invention relates to methods of reconfigurating a cell. Each signalling channel (SDCCH / 8) contains a number of dedicated control channels (SDCCH). The invention can be divided into two parts, an increase condition in which a traffic channel (TCH) is converted to a signalling channel (SDCCH / 8) and a decrease condition in which a signalling channel is reconverted to a traffic channel. The increase condition comprises the step of increasing the basic configuration by configure a traffic channel (TCH) to a dedicated control channel (SDCCH / 8) if the channel utilization indicates that the basic configuration would have given a certain congestion level. The decrease condition comprises the step of decreasing the basic configuration by configure a dedicated control channel (SDCCH / 8) to a traffic channel (TCH) if the channel utilization indicates that the basic configuration would have given a certain congestion level.

Description

technical field [0001] The invention relates to a method of reconfiguring a cell in a cellular mobile radio system, wherein each cell comprises a predetermined minimum number of dedicated control channels (SDCCHs) for signaling, and several traffic channels ( TCH), where a traffic channel can be converted to a dedicated control channel and vice versa. Background technique [0002] It is known before that in a cellular mobile radio system it is possible to reconfigure a cell by temporarily using a vacant traffic channel as a control channel. [0003] US 5 299 198 and US 5 513 183 show a TDMA system in which the number of control channels can be increased by using traffic channels (see abstract for example). [0004] WO93 / 10600 discloses a method of temporarily using a traffic channel as a control channel. This decision is made depending on the ratio of traffic density to a given threshold (see Abstract and page 8, line 17 to page 9, line 9, page 15, line 24 to page 17, line...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W24/02H04W72/04
CPCH04W16/10H04W88/08H04W72/0486H04W24/02H04W72/52
Inventor C·P·塞尔瓦尔A·海勒贝里
Owner TELEFON AB LM ERICSSON (PUBL)