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Mobile communication system, transfer control method, base station control device and mobile terminal

The technology of a base station control device and control method, which is applied in the field of non-serving base stations, can solve the problems of deterioration of transmission quality and inability to limit data power, etc.

Active Publication Date: 2012-12-12
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0032] Since the existing mobile communication system is structured as described above, the base station in charge of scheduling can limit the data power transmitted from the mobile terminal after considering the amount of interference of the base station, but the base station not in charge of scheduling cannot limit the amount of interference even if the amount exceeds the allowable amount. The data power transmitted from the mobile terminal has the problem of deteriorating transmission quality

Method used

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  • Mobile communication system, transfer control method, base station control device and mobile terminal
  • Mobile communication system, transfer control method, base station control device and mobile terminal
  • Mobile communication system, transfer control method, base station control device and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0093] figure 1 It is a configuration diagram showing a mobile communication system according to Embodiment 1 of the present invention. In the figure, a mobile terminal 1 is a terminal such as a mobile phone or a mobile PC used by a user.

[0094] The serving base station 2 - 1 has a scheduling function for controlling data transmission timing and transmission power of the mobile terminal 1 , and receives data transmitted from the mobile terminal 1 . The so-called control of the transmission power here refers to the control of the allowable transmission power of the mobile terminal for the purpose of indicating the maximum transmission rate, not the power control in the high-speed closed loop.

[0095] The non-serving base station 2-2 has a control function of controlling the transmission power of data of the mobile terminal 1, and receives data transmitted from the mobile terminal 1. Among them, if the data reception status of the non-serving base station 2-2 changes, the ba...

Embodiment approach 2

[0337] In Embodiment 1 above, when the base station 2 - 3 with a strict interference amount margin is changed to a non-serving base station, the case where the judgment subject for the change is the mobile terminal 1 is shown, but the base station control device 3 may also be the judgment subject for the change. .

[0338] Next, a case where the base station controller 3 is the subject of determination of the change will be described.

[0339] In the case where the base station control device 3 is the subject of determination of the change, there is an advantage that the base station 2 can measure the amount of interference.

[0340] In the case of signaling from the base station 2 to the mobile terminal 1, an error may occur in order to use a wireless channel, but if the base station 2 performs its own measurement, there is an advantage that it is possible to prevent the occurrence of an error in notification of interference amount information.

[0341] However, the base sta...

Embodiment approach 3

[0399] In the first embodiment described above, the case where the mobile terminal 1 judges the base station 2 added to the E-DCH active set is shown. In this third embodiment, the mobile terminal 1 judges the base station to be deleted from the E-DCH active set. 2 cases. Under the existing active group standard of individual channels, the same standard is used for addition and deletion, but the active group (E-DCH active group) in the uplink data packet communication is negotiable, because the E-DCH of the deletion side is already in Since the receiving state can be used as a judgment criterion, the criterion related to E-DCH can be judged more accurately for E-DCH active group deletion.

[0400] Next, the case where the mobile terminal 1 selects the base station 2 to be deleted from the E-DCH active group according to the amount of interference of the base station 2 and the influence power of the transmitted data of the mobile terminal 1 on the base station 2 will be describ...

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Abstract

A base station controller (3) sorts a plurality of base stations (2) to a base station of an E-DCH active set or a base station of a soft hand over active set (conventional active set), corresponding to a data reception status of the base stations (2).

Description

technical field [0001] The present invention relates to the use of an active group base station for soft handover in a single channel to select an active group base station for uplink data packet communication (macro diversity (macro diversity) reception), in particular to a mobile communication system and a mobile terminal. Among a plurality of base stations receiving data transmitted from a mobile terminal in macro-diversity, a non-serving base station has a control function of controlling the data transmission power of the mobile terminal. Background technique [0002] A mobile terminal in a conventional mobile communication system is configured to transmit data to a base station in order of arrival of the data, rather than to transmit the data after the scheduled transmission timing of the data. [0003] However, as the speed of transmission data increases, the power of transmission data of mobile terminals increases, and the amount of interference from base stations inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/20H04W36/18H04W52/40
CPCH04B7/022H04W52/40H04W36/18H04W36/302H04W24/00H04W68/00H04B7/2606
Inventor 前田美保若林秀治杉泽耕太郎
Owner SONY CORP