Receiving diversity apparatus and method of mobile station for high data rate type mobile communication system

A mobile communication system, high data rate technology, applied in the field of communication systems, can solve problems such as difficult to control diversity

Inactive Publication Date: 2004-12-01
LG ELECTRONICS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is difficult to accurately control the diversity by means of the related art

Method used

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  • Receiving diversity apparatus and method of mobile station for high data rate type mobile communication system
  • Receiving diversity apparatus and method of mobile station for high data rate type mobile communication system
  • Receiving diversity apparatus and method of mobile station for high data rate type mobile communication system

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Embodiment Construction

[0045] 5a and 5b show forward channel structures used in an HDR mobile communication system. The structure includes a plurality of time slots, at least one of which corresponds to a data channel 80 , a medium access control (MAC) channel 81 , and a pilot channel 82 . In the Time Division Multiplexing (TDM) method, all physical channels are sent to one of the forward channels. The pilot channel is used as a reference channel for coherent detection of the base station, the MAC channel is used to send transmission rate control information, and the data channel is used to send control information for controlling call processing or actual useful information.

[0046] The HDR mobile communication system does not provide the same data rate to all users, but provides a variable data rate according to C / I (Carrier to Interference Ratio) of a pilot channel in a forward channel. That is, the mobile station uses the pilot channel as a reference for coherent detection, demodulates the MAC...

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Abstract

A receiving diversity apparatus and method for a mobile station in an HDR mobile communication system measures C / I values of pilot channels on respective antennas, measures a C / I value of in-phase combined pilot channel, and then selectively performs one of a selection diversity receiving operation and an in-phase combining receiving operation according to the measured C / I values. An optimal diversity receiving status is then maintained according to changes of a presently received pilot channel, and the optimal diversity receiving operation between the selection diversity receiving operation and the in-phase combining diversity receiving operation is selected at a starting point of the pilot channel.

Description

(1) Technical field [0001] The present invention generally relates to a communication system, and in particular to a receiving diversity device and method of a mobile station in a mobile communication system. (2) Background technology [0002] Diversity methods are techniques for improving the quality of received signals in wireless communication systems. A receiving device in a system applying a diversity method includes two or more antennas, and selects or combines individual signals received through the antennas, thereby achieving higher received signal quality than a conventional receiving device using one antenna. [0003] In general, there are three types of diversity methods: selection or switching methods, in-phase or equal-gain combining methods, and maximum ratio combining methods. [0004] (1) Select or switch method [0005] A selection or switch diversity method (hereinafter referred to as a selection diversity method) selectively receives the strongest signa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/27H03M13/23H03M13/29H04B1/00H04B1/707H04B1/7115H04B7/005H04B7/02H04B7/06H04B7/08H04B7/216H04B7/26H04B14/04H04L1/00H04L1/06H04L1/08H04L1/18H04L12/56H04L27/26H04L69/40H04W16/28H04W88/02
CPCH04W28/14H04W52/24H04L5/0042H04L1/1848H04L1/0071H04L1/1819H04L1/0041H04B7/15535H04W52/241H04W52/143H04L47/34H04L27/2602H04L1/0045H04L47/14H04L2001/0096H04L47/28H04W52/225H04L1/1841H04L1/0069H04L1/08H04B7/084H04W52/245H04B7/0604Y02B60/50H04B7/0894H04L1/06H04B7/15507H04L1/0066H04W52/46H04L5/0044H04J13/12H04L5/0023H04W52/242H04L5/0083H04L47/10H04L1/1845H04B7/02H04W8/04
Inventor 赵南信
Owner LG ELECTRONICS INC
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