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Base station device and communication terminal device

A technology for communication terminals and base station equipment, which is applied in wireless communication, network traffic/resource management, electrical components, etc., and can solve problems such as increased interference fluctuations

Inactive Publication Date: 2005-11-02
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, according to the conventional uplink high-speed packet transmission technology, when the transmittable mobile station changes within a short time unit due to the assignment of the base station, the interference fluctuation with other cells also increases

Method used

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  • Base station device and communication terminal device
  • Base station device and communication terminal device
  • Base station device and communication terminal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] figure 2 The block diagram of is showing the main component configuration of the base station device (base station) 100 according to Embodiment 1 of the present invention.

[0048] Such as figure 2 The illustrated base station 100 has a function of determining a transmittable mobile station and a transmit rate (for example, coding rate, modulation scheme, spreading factor, transmit power) from among communication terminal equipment in its own cell and performing allocation, and it includes : Antenna 101, receiving wireless part 103, despreading part 105, demodulation part 107, channel coding part 109, report value extraction part 111, scheduling and transmission parameter determination part 113, channel coding part 115, modulation part 117, extension part 119 And transmit wireless part 121. Here, the base station is equipped with a plurality of despreading sections 105 , demodulation section 107 , channel coding sections 109 , 115 , modulation section 117 and spread...

Embodiment 2

[0095] Figure 13 The block diagram of shows the main component configuration of the base station device (base station) 200 according to Embodiment 2 of the present invention, and Figure 14 The block diagram of is showing the main component configuration of the communication terminal device (mobile station) 250 according to Embodiment 2 of the present invention. Such as Figure 13 The illustrated base station 200 has a similar figure 2 The basic configuration of the base station 100 is shown, and the same components are assigned the same reference numerals and their explanations will be omitted. In addition, if Figure 14 The mobile station 250 shown has a similar image 3 The basic configuration of the mobile station 150 is shown, and the same components are assigned the same reference numerals and their explanations will be omitted.

[0096] In Embodiment 1, when the soft handover is in progress, the base station and the mobile station perform transmission to identify...

Embodiment 3

[0105] Figure 16 The block diagram of shows the main component configuration of the base station device (base station) 300 according to Embodiment 3 of the present invention, and Figure 17 is a block diagram showing the main component configuration of a communication terminal device (mobile station) 350 according to Embodiment 3 of the present invention. Such as Figure 16 The illustrated base station 300 has a similar Figure 13 The basic configuration of the base station 200 is shown, and the same components are assigned the same reference numerals and their explanations will be omitted. In addition, if Figure 17 The mobile station 350 shown has a similar Figure 14 The basic configuration of the mobile station 250 is shown, and the same components are assigned the same reference numerals and their explanations will be omitted.

[0106] A feature of this embodiment is to allow changes in the transmission parameters (eg, coding rate, modulation scheme, spreading facto...

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Abstract

A base station device and a communication terminal device capable of estimating interference to another cell in the upstream line and enabling optimal allocation. In a base station (100), a scheduling / transmission parameter decision section (113) inputs soft handover information from an upper node layer and does not perform individual allocation for a mobile station in a soft handover state. Thus, the mobile station performs continuous transmission with a constant transmission rate (such as encoding ratio, modulation method, spread ratio, transmission power, and the like).

Description

technical field [0001] The invention relates to a base station device and a communication terminal device. Background technique [0002] As a technique for transmitting packet data at high speed on the downlink, a packet transmission scheme called "HSDPA (High Speed ​​Downlink Packet Access)" is known (see, for example, Unexamined Papers edited and supervised by Keiji Tachikawa Japanese Patent Application Laid-Open No. 2000-151623 "W-CDMA Mobile Communication Scheme" (WCDMA Mobile Communication Scheme) Jun. 25, 2001, Maruzen Co., Ltd., p. 403). [0003] In HSDPA, one physical channel is shared and used by multiple mobile stations on a time division basis. Thus, at a certain point in time, a base station determines to which mobile stations information should be transmitted (commonly referred to as "scheduling"). Scheduling is performed based on, for example, the amount of data transmitted from the base station to the mobile station, allowable delay time, communication quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/18H04W72/12
Inventor 上原利幸吉井勇西尾昭彦平松胜彦伊大知仁
Owner PANASONIC CORP
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