JP2872107B2 - Uplink transmission efficiency improvement method in mobile communication system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for improving uplink transmission efficiency in a mobile communication system.

[0002]

2. Description of the Related Art FIG. 2 shows a device configuration of a conventional mobile communication system.

This conventional example shows the contents disclosed in Japanese Patent Application Laid-Open No. 6-29911.

In FIG. 2, in the case of an uplink in which a signal is transmitted from a mobile station 66 to a centralized base station 61, the transmitted signal is received by all transmitting / receiving antenna stations 64 in a large zone 63 and transmitted to the centralized base station 61. Send. The centralized base station 61 obtains a received signal by selecting a signal having a good reception state from each of the transmission / reception antenna stations 64, or by weighting the reception level according to each reception state and combining them.

[0005]

SUMMARY OF THE INVENTION In the prior art,
Each transmitting / receiving antenna station 64 must have one or more of its receiving signals. However,
In the TDMA system, which is a radio access system of a digital car telephone system, since data received in units of time slots is collected for one signal and is used as a signal, signal reception in units of time slots or reception after a certain time slot is received. The impossible case happens. This is because each transmitting / receiving antenna station 64 independently performs a time slot unit receiving operation for one signal.

[0006]

In the uplink transmission efficiency improving method in the mobile communication system according to the present invention, each transmitting / receiving antenna station receives all the time-divided data in units of time slot, and an error is detected from the data of each transmitting / receiving antenna station. , And reconstructs the received signal of the same mobile station.

More specifically, each transmission / reception apparatus for receiving a signal from the same mobile station in a time-division manner (reference numerals 10 and 1 in FIG. 1).
1, 12), a reception signal arbitration device (reference numeral 20 in FIG. 1) for collecting time-division reception data of each transmission / reception device and reconstructing a reception signal of the same mobile station, and a base station control device for performing call connection and the like (Reference numeral 30 in FIG. 1) and a highway (Reference numeral 40 in FIG. 1) connecting each transmitting / receiving device and the received signal.

In the mobile communication system according to the present invention, there is provided an uplink transmission efficiency improving method in which a plurality of transmission / reception devices receive all signal data time-divisionally transmitted from a mobile station, collect error-free data, and receive a signal of the same mobile station. Has been reconfigured.
For this reason, loss of time-division signals can be reduced, and transmission quality can be improved. In addition, line traffic due to partial retransmission can be prevented and transmission efficiency can be improved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a device configuration of a mobile communication system to which the present invention is applied.

FIG. 3 is a diagram showing the transfer of a time-division signal when a reception signal from the same mobile station is time-division-received by three transmitting / receiving apparatuses.

Each of the transmission / reception apparatuses 10, 11, and 12 in FIG. 1 receives all data transmitted from the mobile station 50 in a time-division manner.
The time-division data (reference numeral 20 in FIG. 3) is transmitted at the corresponding reception timing of the highway 40 assigned to each transmission / reception device.
1, 202, 203, and 204) (operations of reference numerals 100, 101, and 102 in FIG. 3). If data cannot be received, nothing is done.

The reception signal arbitration device 20 extracts time-division data of all transmission / reception devices at each reception timing (operation of reference numeral 103 in FIG. 3). If there is a plurality of data of the same mobile station, one of them is taken out. Received signal arbitration device 2
0 starts the reception signal reconstruction when the extracted data is the head. When the extracted signal is continuous, if the received signal reconstruction is started, the received signal reconstruction is continuously performed.
When the extracted data is final, the received signal reconfiguration is completed, and the base station controller 30 is notified of the signal reception.

[0014]

As described above, according to the present invention,
It is possible to reduce omission of time-division data. Thereby, transmission efficiency can be improved.

The reason is that it is possible to prevent an increase in line traffic due to partial retransmission by reducing the loss of time-division data.

[Brief description of the drawings]

FIG. 1 is a diagram showing a device configuration of a mobile communication system to which the present invention is applied.

FIG. 2 shows a device configuration of a conventional mobile communication system.

FIG. 3 is a diagram illustrating delivery of a time-division signal when a reception signal from the same mobile station is time-division-received by three transmission / reception devices.

[Explanation of symbols]

 10, 11, 12 Transmission / reception device 20 Received signal arbitration device 30 Base station controller 40 Highway 50 Mobile station 61 Centralized base station 62 Service area 63 Large zone 64 Transmission / reception antenna station 65 Small zone 66 Mobile device

Claims (3)

(57) [Claims] 1. A receiving device receives communication data time-divisionally transmitted from a mobile station, passes the received communication data to a received signal arbitration device once, and retransmits the received communication data to the received signal arbitration device. An uplink transmission efficiency improving method in a mobile communication system, characterized by performing a configuration. 2. A mobile station for transmitting time-division communication data,
A receiving device for receiving communication data transmitted by the mobile station;
A mobile communication system comprising: a reception signal arbitration device configured to reconfigure communication data received by the reception device. 3. The mobile communication system according to claim 2, further comprising a highway for passing communication data received by said reception device to said reception signal arbitration device.