JP2005192240A - Drive power control method and transmission quality monitoring method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save an electric power at a receiving portion, and to enhance the effective capability of a working, with regard to a drive power control method, and to provide a transmission quality monitoring method. <P>SOLUTION: A slot which has a possibility for a data to be transmitted to own station receives a set of a destination information, whose 1 set only is included inside one slot in a mobile station for receiving the slot stored by a divided data in slot unit and an information showing the number of the slot transmitted continually to the same mobile station. When the destination of the slot received by the destination information is detected that it is not own station, a supply of the drive power to the receiving means is stopped so as not to conduct the entire or a part of a demodulation processing regarding the slot transmitted continually to the same mobile station. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a driving power control method applied to a mobile station that selects and receives a specific block based on a frame configuration in a wireless transmission system in which transmission information is divided and transmitted in units of blocks each composed of a plurality of packets. And a transmission quality monitoring method.

In recent years, STD-27 and other digital mobile communication systems are being put into practical use by organically combining technologies such as exchange, wired transmission, wireless transmission, and information processing together with digital transmission technology.
In such a digital mobile communication system, the TDMA system is adopted as a transmission system for transmission information of voice system and control information related to radio channel setting control, and the reception system of the mobile station apparatus is, for example, as shown in FIG. A receiving unit 62 connected to the feeding point of the antenna 61; a processor 63 connected to the receiving unit via a bidirectional input / output port; a specific output of the processor 13; and a control input of the receiving unit 12. And a timer 64 disposed between the two.

  Also, under the TDMA scheme described above, for example, as shown in FIG. 12, the time slot R allocated exclusively for reception, the time slot T allocated exclusively for transmission, and these time slots are arranged. In addition, a multi-frame configuration including a time slot I used for access to a radio channel other than a radio channel to be transmitted or received is employed.

  Furthermore, in the reception system described above, the reception unit 62 generates a baseband signal by performing demodulation processing based on a predetermined demodulation method on the reception wave captured by the antenna 61. The processor 63 takes in the baseband signal, performs bit synchronization, and performs frame synchronization based on the above-described multiframe configuration and the format of each frame, thereby transmitting the received data via the time slot R described above. Extract information.

Further, every time the processor 63 obtains the start (end) timing of the time slot R under the frame synchronization described above, the processor 63 obtains the time slot R period (the sum of the time slot I and time slot T periods) at that timing. The timer 64 is started by designating the corresponding count value.
The timer 64 measures the time over the period indicated by the count value, thereby notifying the receiving unit 62 of the timing of the end of the time slot R (the head of the subsequent time slot R). Therefore, in the receiving unit 62, the period of the time slot R is notified by the timer 64, and the driving power of the receiving unit (or its main circuit) is supplied only during that period to perform the receiving operation (FIG. 12 ( 1)).

  Furthermore, when the processor 63 recognizes the timing at which the electric field strength (or transmission quality) of another radio zone should be measured prior to channel switching (handoff) during a call based on the above-described radio channel setting control procedure, Under the same frame synchronization and multi-frame configuration, the period of the time slot I is grasped, and over the period, identification information indicating other radio channels and a reception operation command adapted to such measurement are received by the receiver 62. To give.

The receiver 62 performs the above-described measurement relating to a single or a plurality of radio channels according to such identification information and the reception command, and notifies the processor 63 of these measurements.
The processor 63 performs radio channel setting control such as the above-described channel switching during a call based on the result notified in this manner. The series of processing performed by the processor 63 to measure the field strength (or transmission quality) of other radio channels in this way can be described in detail because many known methods can be applied in the present invention. This description is omitted here, and hereinafter, simply referred to as “adjacent zone monitoring process”.

In recent years, in mobile communication systems, digital information that is distributed unevenly on the time axis is transmitted together with voice transmission information, for example, in combination with a mobile station device and a personal computer or other data terminal. Sent and received as information.
The transmission of such transmission information is newly added as a procedure of the above-described radio channel setting control in the mobile station apparatus serving as the transmission end (here, it is assumed that it is controlled by the processor 63 for simplicity). Based on the control procedure, the corresponding call is identified, and the following transmission method is applied.

  Transmission information sent out by the data terminal occurs as a bit string that is randomly and burst-concentrated on the time axis. The processor 63 divides such a bit string (hereinafter referred to as “message data” as shown in FIG. 13 (1)) into word length units that can be transmitted with unit slot widths of time slots R, I, and T. As a result, a plurality of blocks (FIG. 13 (2)) are generated. Further, the processor 63 sequentially generates packets including the contents of these blocks in the transmission information field, and sends these packets to a plurality of continuous time slots against the above-described multiframe configuration.

  Further, in the above-described packet generation process, the processor 63 has a 2-bit information indicating which of the blocks constituting the message data is included in the transmission information field as part of the control information of these packets. Packet type (for simplicity, “10” indicates the first packet, “01” indicates the last packet, and “00” indicates the other intermediate packets) and the effective word length (the first packet and the intermediate packet) Indicates the number of subsequent packets, and the last packet indicates the number of valid information bytes (bits) included in the packet.

It should be noted that the hardware and operation of the transmission system used for transmitting the message data described above are not directly related to the present invention, and are not shown and described here.
Further, the above-described packet includes a destination indicating a transmission destination based on the TDMA system and a check bit used for correcting transmission path errors in units of packets.
On the other hand, the same transmission method is applied to digital information transmitted from the data terminal of the opposite transmission destination via the base station. The processor 63 performs the analysis processing based on the multi-frame configuration and the frame configuration described above on a series of time slots received based on such a transmission method via the receiving unit 62, and the time slots are the time slots R, I. When it is recognized that the packet is one of the first packet, the intermediate packet, and the last packet instead of T, the operation of the timer 64 is stopped and the reception operation can be continued for the time slot that follows the reception unit. Set to. Further, the processor 63 sequentially extracts the contents of the transmission information field based on the above-described packet type and effective word length, and restores the above-described digital information by assembling.

That is, the digital information is transmitted at a significantly higher speed than when it is transmitted only through the time slot T, and the mobile station apparatus that is in a conversation state at the same time until the subsequent message data is given. However, the time slot is assigned with certainty.
Therefore, the real-time property required for transmission / reception of the digital information between the data terminals is ensured while securing the transmission path of the call signal related to all completed calls.

  Regarding the word length of the message data, at the transmitting end, as long as the real-time property of the call signal to be transmitted and received by the mobile station in the call state is ensured and a predetermined transmission quality can be ensured as much as possible. The word length output from the data terminal is set to be long. If the word length of such message data is excessive, it is divided into a plurality of message data for each predetermined length determined in advance based on the range. The

Further, when the processor 63 recognizes that the time slot received under the above-described analysis processing is any of the time slots R, I, and T, the processor 63 obtains the timing of the beginning (end) of the time slot R. At the same time, the process of specifying the count value corresponding to the period of time slot R (the sum of the periods of time slot I and time slot T) is resumed.
JP-A-2-26137 JP-A-1-259634 JP-A-6-53875

By the way, in such a conventional example, the driving power of the receiving unit 62 (or its main circuit) is continuous during the period in which the first packet or the last packet is received regardless of the destination of these packets. Had been supplied.
Accordingly, the receiving unit 62 consumes power to uselessly receive packets addressed to other stations under the TDMA scheme, and particularly in a mobile terminal to which driving power is supplied by a battery, the time during which continuous operation is possible is shortened. In order to ensure the reception, it was required to install a battery with a large capacity.

In addition, these matters have been a major factor that impairs the reduction in size, weight, cost and running cost of mobile terminals.
The present invention provides a drive power control method and a transmission quality monitoring method capable of minimizing the power consumption of a receiver while adapting to a multi-frame configuration and increasing the effectiveness of operation of the receiver. Objective.

  According to the first aspect of the present invention, “in a mobile station that receives a slot in which data may be transmitted to its own station and in which data divided in slot units is stored, one slot is received. A pair of destination information included in only one set and information indicating the number of slots continuously transmitted to the same mobile station is received, and the destination of the received slot is not addressed to the own station by the destination information. Drive power control, wherein supply of drive power to the receiving means is stopped so as not to perform all or part of demodulation processing for slots continuously transmitted to the same mobile station Method "is used.

  According to the second aspect of the present invention, “in a mobile station that receives a slot in which data may be transmitted to its own station and in which data divided into slots is stored, one slot is received. A pair of destination information included in only one set and information indicating the number of slots continuously transmitted to the same mobile station is received, and the destination of the received slot is not addressed to the own station by the destination information. If this is detected, a transmission quality monitoring method characterized by monitoring received field strength or transmission quality of other radio channels not communicating is used in slots that are continuously transmitted to the same mobile station.

  In the third aspect of the invention, “there is only one set of the destination information, the information indicating the head data, and the information indicating the number of slots continuously transmitted to the same mobile station” A base station capable of transmitting a slot including head data and sequentially transmitting a slot including the next head data at intervals separated by the number of slots corresponding to the information indicating the number of slots included in the slot including the head data transmitted previously. The mobile station receiving the slot transmitted from the mobile station receives the slot including the head data, and the destination information of the received slot including the head data indicates that the destination of the received slot is addressed to the local station. Upon detection, the slot including the received head data has received the slot corresponding to the information indicating the number of slots, and the next slot When the slot containing the head data to be transmitted is received and the destination information of the slot containing the received head data detects that the destination of the received slot is not addressed to its own station, the received head data is A drive power control method characterized by stopping the supply of drive power to the receiving means so as not to perform all or part of the demodulation processing for the slot transmission period according to the information indicating the number of slots included in the slot. Is used.

  In the invention according to claim 4, “there is only one ancestor for a set of destination information, information indicating the head data, and information indicating the number of slots continuously transmitted to the same mobile station. A base station capable of transmitting a slot including head data and sequentially transmitting a slot including the next head data at intervals separated by the number of slots corresponding to the information indicating the number of slots included in the slot including the head data transmitted previously. The mobile station receiving the slot transmitted from the mobile station receives the slot including the head data, and the destination information of the received slot including the head data indicates that the destination of the received slot is addressed to the local station. When detected, the slot containing the received head data is received in the slot corresponding to the information indicating the number of slots, and the next slot is received. When receiving the slot containing the head data transmitted in step S3 and detecting that the destination of the received slot is not addressed to the own station from the destination information of the slot containing the received head data, the received head data A transmission quality monitoring method characterized by monitoring received field strength or transmission quality of other radio channels that are not in communication during a slot transmission period corresponding to information indicating the number of slots included in a slot including “is used.

FIG. 1 is a first principle block diagram of the present invention.
In the first invention related to the present invention, the transmission information having the same transmission destination is divided into individual unit information obtained by dividing the transmission information by a fixed word length in time-series order. Demodulating means 11 for demodulating a radio frequency signal modulated with a sequence of packets based on a frame structure to which numerical information indicating the amount of information and identification information of the transmission destination are added, and obtaining a bit sequence indicating the sequence of the packets; A communication control unit 13 that performs frame synchronization processing adapted to the frame configuration on the bit sequence obtained by the demodulation unit 11 to restore a packet sequence, and extracts unit information, numerical information, and identification information based on the frame configuration; Whether the numerical information and the identification information extracted by the communication control means 13 are taken in and the identification information indicates the own station. When the result is “false”, the packet identification means 15 obtains the number of subsequent unit information based on the numerical information and the frame configuration, and obtains the product of the number and the packet length; And a drive control means 17 for preventing supply of drive power to all or a part of the demodulation means 11 over a period corresponding to the product value obtained by the packet identification means 15.

  According to a second invention related to the present invention, the transmission information having the same transmission destination is divided into individual unit information obtained by dividing the transmission information by a fixed word length in time-series order. Demodulating means 11 for demodulating a radio frequency signal modulated with a sequence of packets based on a frame structure to which numerical information indicating the amount of information and identification information of the transmission destination are added, and obtaining a bit sequence indicating the sequence of the packets; A communication control unit 13 that performs frame synchronization processing adapted to the frame configuration on the bit sequence obtained by the demodulation unit 11 to restore a packet sequence, and extracts unit information, numerical information, and identification information based on the frame configuration; Whether the numerical information and the identification information extracted by the communication control means 13 are taken in and the identification information indicates the own station. When the result is “false”, the number of subsequent unit information is obtained based on the numerical information and the frame configuration, the product of the number and the packet length, and the rise time of the demodulating means 11 A packet identification means 21 for obtaining the difference between the two, and a drive control means 23 for preventing supply of drive power to all or a part of the demodulation means 11 over a period corresponding to the difference obtained by the packet identification means 21. It is characterized by having.

FIG. 2 is a second principle block diagram of the present invention.
According to a third aspect of the present invention, transmission information having the same transmission destination is divided into individual unit information obtained by dividing the transmission information by a fixed word length in time-series order. Demodulating means 11 for demodulating a radio frequency signal modulated with a sequence of packets based on a frame structure to which numerical information indicating the amount of information and identification information of the transmission destination are added, and obtaining a bit sequence indicating the sequence of the packets; A communication control unit 13 that performs frame synchronization processing adapted to the frame configuration on the bit sequence obtained by the demodulation unit 11 to restore a packet sequence, and extracts unit information, numerical information, and identification information based on the frame configuration; Whether the numerical information and the identification information extracted by the communication control means 13 are taken in and the identification information indicates the own station. When the result is “false”, the number of subsequent unit information is obtained based on the numerical information and the frame structure, and the product of the number and the length of the packet and all of the demodulation means 11 or Among some constituent elements, packet identification means 15 for individually obtaining a difference from the maximum value of the rise time in a plurality of sets set in order of magnitude of the rise time, and individual differences obtained by the packet identification means 15 And a drive control means 23 for blocking the supply of drive power to the sets corresponding to these differences in parallel over a period corresponding to.

FIG. 3 is a third principle block diagram of the present invention.
According to a fourth aspect of the present invention, the transmission information having the same transmission destination is divided into individual unit information obtained by dividing the transmission information by a fixed word length in time-series order, the rank in the transmission information or the subsequent unit information. Demodulating means 11 for demodulating a radio frequency signal modulated with a sequence of packets based on a frame structure to which numerical information indicating the amount of information and identification information of the transmission destination are added, and obtaining a bit sequence indicating the sequence of the packets; A communication control unit 13 that performs frame synchronization processing adapted to the frame configuration on the bit sequence obtained by the demodulation unit 11 to restore a packet sequence, and extracts unit information, numerical information, and identification information based on the frame configuration; Received field strength or transmission based on radio channel setting control procedure for multiple radio channels at locations where radio frequency signals arrive as received waves In a wireless packet receiving apparatus comprising a monitoring means 31 for monitoring quality, it is determined whether or not the identification information indicates its own station by taking in numerical information and identification information extracted by the communication control means 13 When the result is “false”, the monitoring unit 31 includes a packet identification unit 15 that determines the number of subsequent unit information based on the numerical information and the frame configuration, and calculates the product of the number and the packet length. Includes a means for monitoring over a period corresponding to the product value obtained by the packet identification means 15.

  According to a fifth aspect of the present invention, transmission information having the same transmission destination is divided into individual unit information obtained by dividing the transmission information by a fixed word length in time-series order. Demodulating means 11 for demodulating a radio frequency signal modulated with a sequence of packets based on a frame structure to which numerical information indicating the amount of information and identification information of the transmission destination are added, and obtaining a bit sequence indicating the sequence of the packets; A communication control unit 13 that performs frame synchronization processing adapted to the frame configuration on the bit sequence obtained by the demodulation unit 11 to restore a packet sequence, and extracts unit information, numerical information, and identification information based on the frame configuration; Received field strength or transmission based on radio channel setting control procedure for multiple radio channels at locations where radio frequency signals arrive as received waves In a wireless packet receiving apparatus comprising a monitoring means 31 for monitoring quality, it is determined whether or not the identification information indicates its own station by taking in numerical information and identification information extracted by the communication control means 13 When the result is “false”, the number of subsequent unit information is obtained based on the numerical information and the frame configuration, and the difference between the product of the number and the packet length and the rise time of the demodulating means 11 is obtained. The packet identification unit 15 is provided, and the monitoring unit 31 includes a unit for performing monitoring over a period corresponding to the difference obtained by the packet identification unit 15.

According to a sixth invention related to the present invention, in the first to fifth inventions related to the present invention, the packet identification means 15 transmits the packet based on the frame configuration and the numerical information extracted by the communication control means 13. It includes a means for identifying a head packet corresponding to the head of the information and limiting the object of determination whether or not the identification information indicates its own station to the head packet.
According to a seventh invention related to the present invention, in the sixth invention related to the present invention, the packet identification means 15 is followed by a head packet based on the frame configuration and the numerical information extracted by the communication control means 13. Means for identifying a subsequent packet which is the earliest packet among the packets to be processed.

  An eighth invention related to the present invention is a radio packet receiving apparatus that receives a radio packet to which identification information of a transmission destination and numerical information indicating the number of subsequent packets of the same transmission destination are added. Packet identification means 15 for determining whether or not the wireless packet demodulated by the identification information is addressed to the own station, and to determine the length of the packet of the same transmission destination by the numerical information when it is not addressed to the own station And a drive control means 17 for stopping the supply of drive power to all or a part of the demodulation means 11 at the time determined by the packet identification means 15.

  According to a ninth aspect of the present invention, there is provided a radio packet receiver for receiving a radio packet to which a transmission destination identification information and numerical information indicating the number of subsequent packets of the same destination are added. Packet identification means 15 for determining whether or not the wireless packet demodulated by the identification information is addressed to the own station, and to determine the length of the packet of the same transmission destination by the numerical information when it is not addressed to the own station And monitoring means 31 for monitoring the received electric field strength or transmission quality of other radio channels not in communication at the time determined by the packet identification means 15.

  In the first invention related to the present invention, the demodulating means 11 demodulates the radio frequency signal modulated by the packet sequence to obtain a bit sequence indicating the packet sequence. The communication control unit 13 restores the above-described packet sequence by performing frame synchronization processing adapted to the frame configuration of the packet on the bit sequence, and unit information, numerical information, and identification information from these packets. To extract.

  Further, the packet identification means 15 takes in the numerical information and identification information extracted in this way, and when the identification information indicates another station, the subsequent unit is based on the numerical information and the frame configuration described above. The number of information is obtained, and the product of the number and the packet length is obtained. The drive control means 17 prevents the drive power from being supplied to all or part of the demodulation means 11 over a period corresponding to the product value.

Furthermore, for such a packet, the transmission information with the same transmission destination is divided into individual unit information obtained by dividing the transmission information by a fixed word length in time sequence, and the order of the transmission information or the amount of information of the subsequent unit information Each frame is configured by adding numerical information indicating the ID and identification information of the transmission destination.
Therefore, the drive consumed by the demodulating means 11 during a period in which a packet whose destination is the same as that of the other station in the sequence of packets restored by the communication control means 13 is received. Power is reliably reduced under the frame configuration described above.

  In the second invention related to the present invention, all or a part of the constituent elements of the demodulating means 11 whose driving power is to be interrupted is divided into a plurality of sets in order of the rise time, and the driving power is set for each set. The maximum rise time required from the point in time when the battery is supplied to the steady operating state is obtained individually. Similarly to the first invention related to the present invention, the demodulating means 11 and the communication control means 13 demodulate the radio frequency signal modulated by the packet sequence to obtain a bit sequence indicating the packet sequence, and By synchronizing, unit information, numerical information and identification information are extracted from these packets.

  Further, the packet identification means 21 takes in the numerical information and identification information extracted in this way, and when the identification information indicates another station, the subsequent unit is based on the numerical information and the frame configuration described above. The number of information is obtained, and the difference between the product of the number and the packet length and the rise time of the demodulating means 11 is obtained. The drive control means 23 prevents supply of drive power to all or a part of the demodulation means 11 over a period corresponding to these differences.

  That is, in a period in which a packet whose destination is the same as that of the other station in the sequence of packets restored by the communication control unit 13 and the destination is the same is received, a plurality of units constituting the demodulation unit 11 are received. Even when the rise time of the demodulating means 11 is not constant, the drive power of the set is prevented while securing the rise time of each set and absorbing the difference between these rise times.

Therefore, power saving efficiency is improved as compared with the first invention related to the present invention.
In the third invention related to the present invention, the demodulating means 11 and the communication control means 13 demodulate the radio frequency signal modulated by the sequence of packets in the same manner as in the first invention related to the present invention. Unit information, numerical information, and identification information are extracted from these packets by obtaining a bit string indicating the sequence of packets and taking frame synchronization. The frame structure of such a packet is the same as that of the first invention related to the present invention described above.

  The packet identification means 15 takes in the numerical information and identification information extracted in this way, and when the identification information indicates another station, the packet identification means 15 indicates the subsequent unit information based on the numerical information and the frame configuration described above. The number is obtained, the product of the number and the length of the packet, and the maximum value of the rise time in a plurality of sets set in order of the rise time among all or a part of the demodulating means 11 Find the difference.

The drive control means 17 simultaneously prevents the drive power from being supplied to the sets corresponding to these differences over a period corresponding to the individual differences thus obtained.
That is, in a period in which a packet whose destination is the same as that of the other station in the sequence of packets restored by the communication control unit 13 and the destination is the same is received, a plurality of units constituting the demodulation unit 11 are received. Even when the rise time of the demodulating means 11 is not constant, the drive power of the set is prevented while securing the rise time of each set and absorbing the difference between these rise times.

Therefore, power saving efficiency is improved as compared with the first invention related to the present invention.
In the fourth invention related to the present invention, the demodulating means 11 converts the transmission information of the same transmission destination into individual unit information obtained by dividing the transmission information by a fixed word length in time series order, Demodulate a radio frequency signal modulated with a packet sequence based on a frame configuration to which numerical information indicating the amount of subsequent unit information and identification information of the transmission destination are added, and obtain a bit sequence indicating the packet sequence . The communication control means 13 applies frame synchronization processing adapted to the above-described frame configuration to the bit sequence to restore the above-described packet sequence, and extracts unit information, numerical information, and identification information based on the frame configuration. .

  The monitoring means 31 monitors the received electric field strength or transmission quality for a plurality of radio channels at positions where the above-described radio frequency signal arrives as a received wave, based on the radio channel setting control procedure. The packet identification means 15 takes in the numerical information and identification information extracted by the communication control means, determines whether or not the identification information indicates its own station, and when the result is “false”, the numerical information And the number of subsequent unit information based on the above-described frame configuration and the product of the number and the packet length. The monitoring means performs monitoring over a period corresponding to the product value.

That is, supply of driving power to the demodulating unit 11 is performed during a period in which a packet whose destination is the other station in the sequence of packets restored by the communication control unit 13 is received. However, the driving power is effectively consumed to obtain the above-described received electric field strength and transmission quality in advance.
In the fifth invention related to the present invention, the demodulating means 11 converts the transmission information having the same transmission destination into individual unit information obtained by dividing the transmission information by a fixed word length in time-series order, Demodulate a radio frequency signal modulated with a packet sequence based on a frame configuration to which numerical information indicating the amount of subsequent unit information and identification information of the transmission destination are added, and obtain a bit sequence indicating the packet sequence . The communication control means 13 applies frame synchronization processing adapted to the above-described frame configuration to the bit sequence to restore the above-described packet sequence, and extracts unit information, numerical information, and identification information based on the frame configuration. .

  The monitoring means 31 monitors the received electric field strength or transmission quality for a plurality of radio channels at positions where the above-described radio frequency signal arrives as a received wave, based on the radio channel setting control procedure. The packet identification means 15 takes in the numerical information and identification information extracted by the communication control means, determines whether or not the identification information indicates its own station, and when the result is “false”, the numerical information And the number of the subsequent unit information based on the frame configuration described above and the difference between the product of the number and the length of the packet described above and the rise time of the demodulating unit 11. The monitoring unit 31 performs monitoring over a period corresponding to the difference.

That is, supply of driving power to the demodulating unit 11 is performed during a period in which a packet whose destination is the other station in the sequence of packets restored by the communication control unit 13 is received. However, the driving power is effectively consumed to obtain the above-described received electric field strength and transmission quality in advance.
In a sixth invention related to the present invention, in the first to fifth inventions related to the present invention, the packet identification means 15 transmits the transmission information based on the frame configuration and the numerical information extracted by the communication control means 13. The head packet corresponding to the head of is identified, and the object of the determination whether or not the identification information indicates the own station is limited to the head packet.

That is, with regard to the first to third inventions related to the present invention, the length of the period during which the drive power supply to the demodulating means 11 is blocked is maximized to improve the power saving efficiency. With regard to the fourth or fifth invention, the processing time for obtaining the received electric field strength and transmission quality in advance is maximized, and the processing is efficiently advanced.
In a seventh invention related to the present invention, in the sixth invention related to the present invention, the packet identifying means 15 follows the head packet based on the frame configuration and the numerical information extracted by the communication control means 13. Among the packets, the subsequent packet that is the earliest packet is identified.

That is, the transmission characteristics of the wireless transmission path fluctuate, or the drive power supply is started (or started) asynchronously to the packet train transmitted through the wireless transmission path, and the leading packet is not normally received. Even if a situation occurs, power saving and processing efficiency can be improved with high accuracy.
In the eighth invention related to the present invention, the demodulating means 11 demodulates the radio packet. The packet identification means 15 determines whether or not the radio packet demodulated by the identification information is addressed to the own station. If the packet is not addressed to the own station, the packet identification means 15 determines the length of the same destination packet from the numerical information described above. To do. The drive control means 17 stops the supply of drive power to all or part of the demodulation means 11 at the time determined by the packet identification means.

In other words, during a period in which a packet whose destination is the same as that of the other station in the sequence of packets demodulated by the demodulating unit 11 is received, it is consumed by the demodulating unit 11. Drive power is reliably reduced under the frame configuration described above.
In the ninth invention related to the present invention, the demodulating means 11 demodulates the radio packet. The packet identification means 15 determines whether or not the demodulated radio packet is destined for the own station, and if it is not destined for the own station, discriminates the length of the packet of the same destination from the numerical information. To do. The monitoring means 31 monitors the received electric field strength or transmission quality of other wireless channels that are not communicating at the time determined by the packet identification means 15.

  That is, supply of drive power to the demodulating unit 11 is performed during a period in which a packet whose destination is the same as the destination of the other station in the sequence of packets demodulated by the demodulating unit 11 is received. However, the driving power is effectively consumed to obtain the above-described received electric field strength and transmission quality in advance.

As described above, according to the present invention, unnecessary consumption of the power of the demodulating means during a period when it is certain that a packet whose destination is another station will be received is avoided.
Further, in the present invention, the above-described power consumption is performed under intermittent control based on a time rate adapted to a plurality of set units formed by dividing the constituent elements of the demodulation means in the order of the driving power. Since it is reduced, the power saving efficiency is further increased.

Furthermore, in the present invention, the supply of driving power to the demodulating means is continued during a period when it is certain that a packet whose destination is another station will be received, but this driving power is used for radio channel setting control. It is consumed effectively to obtain the reception field strength and transmission quality in advance.
Further, in the present invention, since a period during which a packet whose destination is another station is surely received is detected at the timing of the leading packet, the length of the period during which the drive power supply is blocked is maximized. Thus, the power saving efficiency is increased, and the time for performing the process of obtaining the received electric field strength and the transmission quality in advance is maximized, thereby improving the efficiency of the process.

  Furthermore, in the present invention, the period during which it is certain that a packet whose destination is another station is surely received is also determined at the timing of the intermediate packet, so that the transmission characteristics of the wireless transmission path vary or the wireless transmission Even if the start (or start) of supply of drive power is asynchronously performed on a packet stream transmitted through a path, and a situation in which the leading packet is not normally received occurs, power saving and processing efficiency can be improved with high accuracy. I can take off.

  That is, in the wireless transmission system to which these inventions are applied, it is possible to reduce the power consumption and improve the responsiveness of the wireless channel setting control performed based on the received electric field strength and the like. In particular, in a device in which driving power is supplied by a battery, such as a portable mobile terminal, the continuous operation time is extended and the performance and service quality are improved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 4 is a diagram showing the first to fourth embodiments of the present invention.
In the figure, components having the same functions and configurations as those shown in FIG. 11 are given the same reference numerals, and description thereof is omitted here.
The difference between the present embodiment and the conventional example shown in FIG. 11 is that a processor 51 is provided instead of the processor 63 and a timer 52 is provided instead of the timer 64.

1 and FIG. 3, the antenna 61 and the receiving unit 62 correspond to the demodulating unit 11, and the processor 51 corresponds to the communication control unit 13 and the packet identifying unit 15. The timer 52 corresponds to the drive control means 17.
FIG. 5 is a diagram for explaining the operation of the first and third embodiments of the present invention.
FIG. 6 is an operation flowchart of the first and third embodiments of the present invention.

The operation of the first embodiment of the present invention will be described below with reference to FIGS.
When the processor 51 recognizes the timing at which message data can be received based on the predetermined radio channel setting control procedure, the multi-frame configuration and the frame configuration described above, the bit sequence received via the receiving unit 62 The correlation with the frame configuration shown in FIG. Furthermore, the processor 51 determines whether the value of the packet type is equal to “10” in the field that individually configures the packet received through each time slot in the process of calculating the correlation. If the result of the determination is “false”, the same reception process as in the conventional example is performed (FIG. 6 (2)).

On the other hand, if “true”, the processor 51 refers to the destination field of the corresponding packet and determines whether or not the value of the field is equal to the identification information of the own station set in advance (FIG. 6). (3)).
When the determination result is “true”, the processor 51 identifies the packet and all the intermediate packets and the final packet following the packet based on the packet type described above, and The driving power of the receiving unit 62 is maintained over a period (FIGS. 5 (1) and 6 (4)). Furthermore, the processor 51 performs reception processing of these packets over the period as in the conventional example (FIG. 6 (5)).

  On the other hand, if the determination result is “false”, the processor 51 promptly blocks the supply of drive power to the receiving unit 62 (here, for the sake of simplicity, the receiving unit 62 has its (It is assumed that a switch for intermittent driving power is mounted and the intermittent control is performed under the control of the processor 51.) (FIG. 6 (6)), and the contents of the effective word length field of the packet Is a count value corresponding to the difference between the product of the value N shown in FIG. 5 and the unit length T of the time slot given in advance and the time t required for the receiving unit 62 to reach the steady state from the start of driving power supply. Is set in the timer 52 (FIG. 5 (2), FIG. 6 (7)).

The timer 52 starts measuring time (FIG. 5 (3)) in accordance with such a count value, and resumes the supply of drive power to the receiving unit 62 at the end of the time measurement (here, for the sake of simplicity). As described above, it is assumed that the switch built in the receiving unit 62 is closed under the control of the timer.) (FIG. 5 (4)).
Therefore, according to the present embodiment, in a period in which all packets other than the head packet corresponding to the head of each block are received with respect to the block including the packet indicating the other station as the destination and the message data including the set of the blocks. The driving power conventionally consumed unnecessarily by the receiving unit 62 is reduced.

FIG. 7 is a diagram for explaining the operation of the second embodiment of the present invention.
FIG. 8 is an operation flowchart of the second embodiment of the present invention.
Hereinafter, the second embodiment of the present invention will be described with reference to FIGS. 4, 7, 8 and 13. Of the processes shown in FIG. 8, the same processes as those shown in FIG. 6 are given the same circle numbers, and the description thereof is omitted here.

The timing at which the message data is received is recognized based on the predetermined radio channel setting control procedure, multi-frame configuration and frame configuration described above as described above.
However, for example, in a mobile terminal or the like, a packet other than the first packet among a plurality of packets corresponding to the blocks constituting such message data is received immediately after power is turned on, or the transmission characteristics of the wireless transmission path vary. The leading packet may not be received due to (fading or the like). Further, the processor 51 cannot directly recognize that such a situation has occurred or cannot predict that the situation will occur.

  The processor 51 obtains the correlation between the bit string received via the receiving unit 62 and the frame configuration shown in FIG. 13 in the same manner as in the first embodiment described above. Further, in the course of the operation, the processor 51 determines whether the value of the packet type field is “10” or “01” among the fields constituting the packet for each packet received through each time slot. It is determined whether or not it is equal to one (FIGS. 8 (1) and 8 (a)). If it is equal to “10”, the value of the flag predefined in the storage area of the main memory is set to “1” ( On the contrary, when FIG. 8B is equal to “01”, the value of the flag is set to “0” (FIG. 8C).

Therefore, the value of such a flag indicates whether or not the head packet has been received for each block.
In addition, when the value of the packet type field described above is “10”, the processor 51 indicates that the corresponding packet is the top packet, and therefore FIG. 6 (3), (6), (7) or FIG. Processing based on the same procedure as shown in 3) to (5) is performed (FIGS. 8 (3) to (7)).

Further, when the value of the packet type is “01”, the processor 51 omits the reception process because the corresponding packet is the final packet.
However, when the determination result is “false”, the processor 51 determines whether or not the value of the flag is “1”.
Further, when the result of the determination is “true”, the processor 51 does not perform any processing related to the timer 52 because the leading packet is received prior to the corresponding packet. In some cases, the processing shown in FIGS. 8 (6) and (7) (FIG. 7 (1)) is performed.

The timer 52 starts measuring time (FIG. 7 (2)) in accordance with the processing shown in FIG. 8 (7), and resumes the supply of drive power to the receiving unit 62 at the end of the time measurement (FIG. 7 (2)). 3)).
Therefore, according to the present embodiment, for message data consisting of a block consisting of packets and a set of blocks, even if the leading packet is not received for some reason, it follows the intermediate packet following the leading packet. The drive power consumed by the receiving unit 62 unnecessarily during the period of all packets is reliably reduced.

The third embodiment of the present invention will be described below.
The difference between the present embodiment and the first and second embodiments described above is that a synthesizer 53 is provided in the receiving unit 62 as shown by a dotted line in FIG. Is connected to the control input of the synthesizer 53 via
2, the antenna 61 and the receiving unit 62 correspond to the demodulation unit 11, the processor 51 corresponds to the communication control unit 13 and the packet identification unit 21, Timers 52 and 54 correspond to the drive control means 23.

The operation of this embodiment will be described below with reference to FIGS. 4 to 8 and FIG.
The difference between this embodiment and the first and second embodiments described above lies in the procedure of processing performed by the processor 51 in these embodiments.
Of the circuits constituting the receiving unit 62, the circuits other than the synthesizer 53 have few circuits having a time constant and the value of the time constant is small, and therefore, when driving power is supplied under the control performed by the processor 51. Immediately transitions to a steady operating state.

However, the synthesizer 53 includes components that inherently have a long time constant, such as a phase control loop, and the time constant is particularly large when the synthesis ratio is large.
When the rise time τ inherent to the synthesizer 53 is given in advance and the count value is given to the timer 52 (FIG. 6 (7), FIG. 8 (7)), the processor 51 also gives the timer 54 time (= NT By giving the timer 54 a count value corresponding to -τ), these timers are started in parallel (FIGS. 6A and 8A).

Since the synthesizer 53 is supplied with driving power at the end of the time measurement performed by the timer 54 activated in this way, when the synthesizer transitions to a steady operating state, a portion of the receiving unit 62 excluding the synthesizer 53 At the same time, a transition is made to a steady operating state.
Therefore, according to the present embodiment, the rise time τ of the synthesizer 53 is excluded from the synthesizer 53 of the receiving unit 62 as compared with the first and second embodiments described above, which is regarded as the time t described above. The power consumed unnecessarily at that time τ in the portion is reliably reduced.

FIG. 9 is a diagram (1) for explaining the operation of the fourth embodiment of the present invention.
FIG. 10 is a diagram (2) for explaining the operation of the fourth embodiment of the present invention.
For the correspondence between this embodiment and the block diagram shown in FIG. 3, the antenna 61 and the receiving unit 62 correspond to the demodulating unit 11 and the monitoring unit 31, and the processor 51 includes the communication control unit 13 and the packet identifying unit 21. The timer 52 corresponds to the drive control means 23.

Hereinafter, the operation of the fourth embodiment of the present invention will be described with reference to FIGS. 4, 6, 8 to 10 and FIG. 13.
The difference between this embodiment and each of the above-described embodiments lies in the processing procedure performed by the processor 51 in these embodiments.
The processor 51 blocks the supply of drive power to the receiving unit 62 (and the synthesizer 53) (FIG. 6 (6), FIG. 8 (6)), and starts the adjacent zone monitoring process described above.

Further, when the timer 52 (and the timer 54) finishes timing and starts receiving (or transmitting) a subsequent packet or time slot, the processor 51 interrupts the adjacent zone monitoring process described above.
Therefore, according to the present embodiment, during the period in which the intermediate packet indicating the other station as the destination and the final packet are given via the wireless transmission path, as shown in FIG. In the period in which the packet and the final packet are given via the wireless transmission path, as shown in FIG. 10, the power consumption in the receiving unit 62 (and the synthesizer 53) is not prevented as in the above-described embodiments. Useful information used for channel switching during a call, such as other radio channels f2, f3,... In the same zone that the local station has not captured, and received field strength (transmission quality) of adjacent zones It can be obtained quickly by effectively using.

In this embodiment, the channel switching is performed in the period of the time slot. However, the period is not limited to this period, and if the received electric field strength or the like is reliably measured with a desired accuracy, the period is It can be anything.
Further, in each of the above-described embodiments, when the first packet or the first intermediate packet received subsequent to the first packet is received, processing for instructing the timers 52 and 54 to start timing is performed in block units. Although the present invention is performed only once, the present invention is not limited to such a method. For example, such a process may be repeatedly performed each time a head packet and each intermediate packet are received.

  Further, in each of the above-described embodiments, each frame includes a packet type field and an effective word length field. However, the present invention is not limited to such a frame configuration. For example, the packet word length is constant. If the message data and the word length of the block are known, each frame is configured without including the packet type, and the quotient is set as the packet type by dividing the value of the effective word length field by the word length. While recognizing, the remainder may be recognized as a valid byte (bit) of the final packet.

It is a first principle block diagram of the present invention. It is a 2nd principle block diagram of this invention. It is a 3rd principle block diagram of this invention. It is a figure which shows 1st thru | or 4th embodiment of this invention. It is a figure explaining operation | movement of 1st and 3rd embodiment of this invention. It is an operation | movement flowchart of 1st and 3rd embodiment of this invention. It is a figure explaining operation | movement of 2nd embodiment of this invention. It is an operation | movement flowchart of 2nd embodiment of this invention. FIG. 10 is a diagram (1) for explaining the operation of the fourth embodiment of the present invention. FIG. 10 is a diagram (2) for explaining the operation of the fourth embodiment of the present invention. It is a figure which shows the structural example of the receiving system mounted in the mobile station of a digital mobile communication system. It is a figure which shows the operation timing of the receiving part in a prior art example. It is a figure which shows a multi-frame structure and a frame structure.

Explanation of symbols

11 Demodulation means 13 Communication control means 15, 21 Packet identification means 17, 23 Drive control means 31 Monitoring means 51, 63 Processors 52, 54, 64 Timer 53 Synthesizer 61 Antenna 62 Receiver

Claims (4)

Destination information that is included in only one set in one slot in a mobile station that receives a slot in which data that is likely to be transmitted to the own station and in which data divided in slot units is stored And a set of information indicating the number of slots continuously transmitted to the same mobile station,
When it is detected from the destination information that the destination of the received slot is not addressed to the own station, the receiving means is adapted not to perform all or part of the demodulation processing for the slot transmitted to the same mobile station. A drive power control method characterized by stopping supply of drive power. Destination information that is included in only one set in one slot in a mobile station that receives a slot in which data that is likely to be transmitted to the own station and in which data divided in slot units is stored And a set of information indicating the number of slots continuously transmitted to the same mobile station,
When it is detected from the destination information that the destination of the received slot is not addressed to its own station, the received field strength or transmission quality of other wireless channels not communicating is monitored in the slot continuously transmitted to the same mobile station. A transmission quality monitoring method characterized by: For a set of destination information, information indicating the head data, and information indicating the number of slots continuously transmitted to the same mobile station, a slot including the head data having only one set is transmitted. A mobile station that receives slots transmitted from a base station that can be sequentially transmitted at intervals separated by the number of slots corresponding to the information indicating the number of slots included in the slot including the first data transmitted previously. The slot containing the head data is received, and if the destination information of the slot containing the head data received detects that the destination of the received slot is addressed to its own station, the received head data is included. The slot receives the slot corresponding to the information indicating the number of slots, and the head data transmitted in the next slot is received. It receives a free slot,
When detecting that the destination of the received slot is not addressed to the own station from the destination information of the slot containing the received head data, the slot corresponding to the information indicating the number of slots of the received slot containing the head data A drive power control method, characterized in that supply of drive power to the receiving means is stopped so as not to perform all or part of demodulation processing for a transmission period. For a set of destination information, information indicating the head data, and information indicating the number of slots continuously transmitted to the same mobile station, the slot including the head data having only one ancestor is transmitted, and the next A mobile station that receives slots transmitted from a base station that can be sequentially transmitted at intervals separated by the number of slots corresponding to the information indicating the number of slots included in the slot including the first data transmitted previously. The slot containing the head data is received, and if the destination information of the slot containing the head data received detects that the destination of the received slot is addressed to its own station, the received head data is The first data transmitted in the next slot while receiving the slot according to the information indicating the number of slots included in the slot included. Receives a slot containing,
When detecting that the destination of the received slot is not addressed to the own station from the destination information of the slot containing the received head data, the slot corresponding to the information indicating the number of slots of the received slot containing the head data A transmission quality monitoring method characterized by monitoring received field strength or transmission quality of other wireless channels that are not communicating during a transmission period.

Images