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Cellular system and communication method according to multi-code CDMA

A communication method, a cellular technology, applied in communication between multiple stations, multiplexed communication, code division multiplexed system, etc., can solve the disadvantages of not being able to ensure that the channel of the base station corresponds to all codes Base station miniaturization, increasing the number of base station channels, etc.

Inactive Publication Date: 2002-10-09
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The first problem is that in the case of high-speed communication using multiple codes, if the channel of the base station cannot be guaranteed to correspond to all the codes, the service cannot be provided to the mobile station
[0011] The second problem is that in the case of using multi-code for high-speed communication, in order to provide a high connection rate to mobile stations, it is necessary to increase the number of channels of the base station, which is not conducive to the miniaturization of the base station

Method used

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  • Cellular system and communication method according to multi-code CDMA
  • Cellular system and communication method according to multi-code CDMA
  • Cellular system and communication method according to multi-code CDMA

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Embodiment Construction

[0044] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0045] figure 1 A block diagram showing a cellular system configuration of a multi-code CDMA system according to an embodiment of the present invention.

[0046] Relate to the cellular system of present embodiment by the first base station 2a; The second base station 2b; Carry out the mobile station 3 of multi-code CDMA mode communication with these two base stations 2a, 2b; Control the first, the second base station 2a, 2b and move The station 1 constitutes the master control station for the communication between the stations 3.

[0047] In addition, for simplicity of description, only two base stations and one mobile station are shown in the figure, but the cellular system related to this embodiment may also be equipped with more than three base stations and more than two mobile stations.

[0048] The master control station 1 is processed by multiplexing the voice s...

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Abstract

The cellular system related to the present invention is composed of at least two base stations, a mobile station performing multi-code CDMA communication with the above base stations, and a master control station controlling the communication between the above base stations and the above mobile stations. In the case where the channel of a base station is saturated In this case, the mobile station uses the channels of other base stations to perform multi-code CDMA communications.

Description

technical field [0001] The present invention relates to a multi-code CDMA cellular system and communication method, which can effectively utilize multi-code CDMA (Code Division Muitple Access) communication. base station channel. Background technique [0002] So far, many mobile communication devices or systems using the CDMA scheme have been proposed. For example: respectively in [0003] The CDMA wireless transmission system was proposed in the Japanese Patent Application Publication No. 8-274687; [0004] A method for controlling the antenna directivity of a wireless base station in a CDMA wireless communication system is proposed in JP-P9-200115; [0005] A CDMA receiving device is proposed in JP-P10-190626 Bulletin; [0006] JP-10-308972 proposes a CDMA cellular system; [0007] JP-A-11-74820 proposes a CDMA signal receiving device. [0008] In the CDMA mobile communication system, when the information transmission exceeds the information transmission speed of a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04J13/00H04J13/16H04W16/02H04W16/06H04W36/38H04W88/14H04W92/00
CPCH04J13/0077H04W16/06H04B1/69H04B7/26
Inventor 胁坂佳树
Owner NEC CORP