JP3208191B2 - VOX reception control method and reception control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a VOX (Voice Operat
More particularly, the present invention relates to a control method and a control apparatus of a mobile radio communication system capable of reducing power consumption in a reception operation.

[0002]

2. Description of the Related Art FIG. 3 shows an operation example of a conventional VOX. FIG. 3 shows the respective operations of transmission and reception. In the figure, indicates a transmission slot, indicates a reception slot, indicates a transmission operation, and indicates a reception operation. VOX is intended to reduce the power required for transmission by making the transmission operation of the mobile station once every several times when the voice of the speaker of the mobile station falls below a certain level close to silence. It is.

[0003]

As described above, in the conventional VOX reception control method, the power consumption can be reduced by performing the transmission operation once every several transmission slots, but the reception operation is difficult. The operation is performed in each reception slot, and the received content is not only information that must be received but also wastes the operation. This has been an obstacle when trying to minimize the power consumption and extend the talk time and standby time of the mobile station within the limited battery capacity.

[0004] The present invention has been made in view of such circumstances, and the timing of a transmission slot and a reception slot is adjusted.
In a mobile station of a prescribed mobile radio communication system,
The received data indicates a VOX, and
When it is determined that the subsequent information is unnecessary,
Interrupting and restarting the next receive slot reception operation
It is an object of the present invention to provide a VOX reception control method .

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides: (1) a mobile station of a mobile radio communication system in which the timings of a transmission slot and a reception slot are defined , based on demodulated data. The contents of the received data
On the other hand, when it is determined that the received data indicates the VOX and that the subsequent information is unnecessary, the receiving operation is interrupted at that time and the reception is performed in the next reception slot . Restarting the operation, or (2)
A radio receiving unit that demodulates the received data; a channel type determining unit that detects a channel type from the data demodulated by the radio receiving unit; The SACCH detection unit for detecting the order bit and the channel type determination unit determine that the channel type is VOX,
A wireless control unit that determines that no significant SACCH data is received from the ACCH detection unit and interrupts the reception operation of the wireless reception unit.

[0006]

The data received by the receiving antenna of the mobile station is sent to the radio receiver and demodulated. The demodulated data detects a synchronizing word by a synchronizing word detecting unit. The detection of the synchronization word is sent to the timing control unit, and the channel type determination unit and the SAC
CH (low speed associated control channel) is operated at an appropriate timing. The channel type determination unit detects the channel type from the demodulated data and sends the result to the wireless control unit. The SACCH detector detects SA from demodulated data.
The order bits of the CCH are detected, and the result is sent to the wireless control unit. The radio control unit controls the operation of the radio reception unit. The channel type determination unit determines that the channel type is VOX, and the SACCH detection unit determines a significant SACC.
If it is determined that H data is not included, the receiving operation of the wireless receiving unit is interrupted, and the wireless receiving unit is controlled in the next receiving slot to resume the receiving operation.

[0007]

Embodiments will be described below with reference to the drawings. FIG. 1 is a block diagram for explaining an embodiment of a VOX reception control apparatus according to the present invention. In the figure, 11 is a reception antenna, 12 is a radio reception section, 13 is a synchronization word detection section, and 14 is a timing control. , 15 is a channel type determining unit, 16 is a SACCH (low speed associated control channel) detecting unit, and 17 is a wireless control unit.

[0008] The data received by the receiving antenna 11 is sent to the radio receiving unit 12 and demodulated by the radio receiving unit 12.
The demodulated data is sent to the synchronization word detection unit 13, the channel type determination unit 15, and the SACCH detection unit 16, and the synchronization word detection unit 13 detects the synchronization word. The detection of the synchronization word is sent to the timing control unit 14, and the channel type determination unit 15
And the SACCH detector 16 is operated at an appropriate timing. The channel type determination unit 15 detects the channel type from the demodulated data and reports the result to the wireless control unit 1.
7, the SACCH detection unit 16 detects the SACCH order bits from the demodulated data, and sends the result to the wireless control unit 17. The radio control unit 17 controls the operation of the radio reception unit 12, and the channel type determination unit 1
5 indicates that the channel type is VOX.
If the detection unit 16 finds that no significant SACCH data is included, the reception operation of the radio reception unit 12 is interrupted, and the radio reception unit 12 is controlled in the next reception slot to resume the reception operation.

FIG. 2 is a diagram for comparing the operation of the present invention with the conventional operation. In the figure, a is a preamble, b is a synchronization word, c is a channel type, and d is a SACCH (low speed associated control channel). , E is VOX data, f is CRC (Cyclic R)
edundancy Check: code for cyclic defect length check) data. In the present invention, SACCHd and V
If the OX data e contains significant data, the same operation as in the conventional example is performed. Do not receive. The VOX data e does not always need to be received. Also, since SACCHd is not used so frequently, in the first embodiment, SACCHd and VOX are used.
In many cases, no significant data is included in the data e, and the reception time is significantly reduced as compared with the conventional example. Therefore, there is an advantage that the power consumption required for the reception operation corresponding to the shortened time is reduced. is there.

[0010]

Since the present invention is configured as described above, it has the following effects. That is, in the receiving operation, the received data is determined based on the demodulated data.
There is judged to be the VOX, since yet subsequent information is to be interrupted reception operation when it found to be unnecessary, can be reduced more power consumption during reception, the mobile radio communication system When used for mobile stations
In this case, the talk time and the standby time of the mobile station can be lengthened .

[Brief description of the drawings]

FIG. 1 is a configuration diagram for explaining an embodiment of a VOX reception control device according to the present invention.

FIG. 2 is a diagram showing a comparison between the operation of the VOX reception control device according to the present invention and the operation of the conventional example.

FIG. 3 is a diagram for explaining an operation of a conventional VOX.

[Explanation of symbols]

11 reception antenna, 12 radio reception unit, 13 synchronization word detection unit, 14 timing control unit, 15 channel type determination unit, 16 SACCH (low speed associated control channel) detection unit, 17 radio control unit.

Claims (2)

(57) [Claims] 1. A mobile station in a mobile radio communication system in which the timings of a transmission slot and a reception slot are defined , determine the content of received data based on demodulated data.
To one, the result, the received data is intended to represent the VOX, and, when the subsequent information it is determined to be unnecessary, suspends the receiving operation at that time, the receiving operation in the next reception slot A VOX reception control method characterized by resuming. 2. A wireless receiving section for demodulating received data, a channel type determining section for detecting a channel type from data demodulated by the wireless receiving section, and a SACCH (low speed) based on data demodulated by the wireless receiving section. An SACCH detecting unit for detecting the order bit of the associated control channel) and the channel type determining unit determines that the channel type is VOX, and the SACCH detecting unit detects a significant SACC.
A radio control unit for judging that no H data is contained and interrupting the reception operation of the radio reception unit.