Channel assigning device and method in CDMA communication system

A channel allocation and code allocation technology, applied in the direction of code division multiplexing system, multiplexing code allocation, multiplexing communication, etc., can solve the possibility that the transmitting/receiving equipment does not consider the forward link channel allocation. issues of sex

Inactive Publication Date: 2001-04-04
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, in the IS-95 communication system, the configuration of the transmitting / receiving equipment does not take into account the possibility of using quasi-orthogonal codes for forward link channel allocation

Method used

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  • Channel assigning device and method in CDMA communication system
  • Channel assigning device and method in CDMA communication system
  • Channel assigning device and method in CDMA communication system

Examples

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Embodiment Construction

[0024] Detailed description of the preferred embodiment

[0025] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the invention in unnecessary detail.

[0026] The present invention relates to a CDMA mobile communication system. In the present invention, the quasi-orthogonal code with the least interference to the orthogonal code is generated, and applied to the CDMA communication system, thereby increasing the capacity of the system and extending the capacity of a single cell to the maximum extent. The details of the quasi-orthogonal code generation method are disclosed in Korean Patent No. 97-46406, No. 98-29576, No. 98-37453 and No. 98-40408.

[0027] One embodiment of the present invention includes: a processing logic block for determining whether to adopt a quasi-orthogonal code...

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Abstract

A device and method for assigning a channel in a CDMA communication system. According to an embodiment of the present invention, in a channel assigning method for a base station, the base station determines the states of orthogonal codes and quasi-orthogonal code masks when a channel is assigned, selects an available quasi-orthogonal code mask number and orthogonal code index if it is determined that a quasi-orthogonal code should be used, and generates the quasi-orthogonal code. Then, the base station assigns the generated quasi-orthogonal code to a forward link dedicated channel, generates a channel assignment message, and transmits the channel assignment message on a different channel to a mobile station.

Description

Background of the invention [0001] 1. field of invention [0002] The present invention generally relates to a communication device and a method in a CDMA (Code Division Multiple Access) communication system, and specifically relates to a device and a method for channel allocation using quasi-orthogonal codes. [0003] 2. Related Technical Notes [0004] Using orthogonal codes for channelization is a method to improve system capacity in CDMA communication systems. The orthogonal codes may be Walsh codes. For example, in the IS-95 standard, the forward link uses orthogonal codes for channelization. [0005] In the IS-95 communication system, the forward link adopts orthogonal channelization by establishing a transmission channel by the channel transmitting device and notifying the channel receiving device of the established channel. The following description assumes that the transmitting device is a base station (BS) transmitting device and the receiving device is a mobil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/69H04J13/00H04J13/16H04W72/04
CPCH04W72/042H04W72/04H04W72/085H04W72/082H04W72/0466H04J13/16H04J13/0007H04W24/00H04W72/02H04L1/00H04J13/0048H04W72/542H04W72/541H04W72/23H04J13/18
Inventor 具昌会金大均
Owner SAMSUNG ELECTRONICS CO LTD
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