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Base station apparatus and method in mobile communication system

A mobile communication system and base station technology, applied in wireless communication, electrical components, etc., can solve the problem that mobile devices cannot receive downlink data, and achieve the effect of improving data throughput

Inactive Publication Date: 2013-01-16
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the handover processing of the serving cell by the mobile device, the mobile device cannot receive downlink data

Method used

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  • Base station apparatus and method in mobile communication system
  • Base station apparatus and method in mobile communication system
  • Base station apparatus and method in mobile communication system

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Experimental program
Comparison scheme
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Embodiment 1

[0043] Figure 1A A base station apparatus 100 in one embodiment is shown. Figure 1A Shown in the figure are a receiving unit 101 , a receiving control unit 102 , a transmitting unit 103 , a transmitting control unit 104 , a radio quality measurement unit 105 , various data storage units 106 , a timing control unit 107 , a transmission data buffer 108 and a cell switching determination unit 109 . Figure 1A Among the various functional elements included in the base station apparatus, elements particularly related to the present embodiment are only schematically shown. Therefore, the method of dividing each functional element shown in the illustration is adopted for convenience, and two or more functional elements may be realized by one unit, for example. These functional elements can be realized by software, hardware or their combination.

[0044] The receiving unit 101 receives an uplink signal transmitted from a mobile device. Uplink signals include various signals such as ...

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Abstract

A base station apparatus (100) receives downstream radio quality information (CQI value) from a mobile device and stores and transmits downstream data to the mobile device. The base station apparatus has a timing control unit (107) and determines, based on the downstream radio quality information, an assumed downstream data speed (DRp) that indicates a speed available to the downlink. If the DRp is lower than a speed of receiving the downstream data from a network apparatus (DRp comp) from both the amount of data that has not been transmitted yet (Ar) and the assumed downstream data speed (DRp). In a case of a handover of the mobile device, the network apparatus does not transmit, to the base station apparatus, downstream data addressed to the mobile device after the time point (Tstop = AT - Dcomp) which is earlier than the timing of a base station apparatus switching event by the data transmission completion period.

Description

technical field [0001] The disclosed invention relates to a base station apparatus and method in a mobile communication system. Background technique [0002] In mobile communication, mobile devices communicate with network devices (including base station devices and radio network controllers. Network devices may include core networks.) Communication. The mobile device detects a plurality of cells that are communication targets or communication candidates, and measures the radio quality of those cells. When the measured value of the radio quality of the communication candidate cell satisfies a preset condition, the cell of the communication target is switched. For example, when it is determined that the newly detected cell can bring relatively better radio quality than the cell already communicating, the cell of the communication object is switched to the newly detected cell. [0003] The high-speed downlink packet access (HSDPA) method realizes downlink high-speed communic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/02H04W88/08
CPCH04W36/02H04W24/10
Inventor 江原英利前田正人小松伸司
Owner NTT DOCOMO INC