WO2006033424A1 - 無線通信システム、無線通信制御装置、無線通信装置 及び無線通信方法 - Google Patents
無線通信システム、無線通信制御装置、無線通信装置 及び無線通信方法 Download PDFInfo
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- WO2006033424A1 WO2006033424A1 PCT/JP2005/017559 JP2005017559W WO2006033424A1 WO 2006033424 A1 WO2006033424 A1 WO 2006033424A1 JP 2005017559 W JP2005017559 W JP 2005017559W WO 2006033424 A1 WO2006033424 A1 WO 2006033424A1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
- H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/08—Trunked mobile radio systems
Definitions
- Wireless communication system wireless communication control device, wireless communication device, and wireless communication method
- the present invention relates to a wireless communication system, a wireless communication control device, a wireless communication device, and a wireless communication method.
- a mobile radio communication system in which one of one or more radio transceivers arranged in a radio base station is assigned to a call request of a mobile radio (for example, Japanese Patent Laid-Open No. 63-1880). 3 See issue 1).
- LMR land mobile radio system
- L and Mobile Radio a predetermined number of radio channels are shared by multiple mobile radio stations using a line controller.
- a trunk-type wireless communication system with improved utilization efficiency is used.
- radio base stations arranged at various locations have circuit control devices, and a predetermined number of radio channels are moved to a plurality of mobile stations by transmitting control information to mobile radio stations. Shared by radio stations. In this way, by sharing a predetermined number of radio channels by a plurality of mobile radio stations, it is possible to increase the frequency utilization efficiency compared to a radio communication system in which each mobile radio station occupies an individual radio channel. .
- one radio base station In a trunk type radio communication system, one radio base station generally manages a plurality of radio channels, and one of the radio channels is used as a control channel (control channel). , The remaining radio channel and call channel (call channel) And use it.
- the mobile radio station determines the call message sent from the radio base station on the control channel by monitoring the content received on the control channel, and moves to the specified call channel if there is a call to the mobile station. Then, perform operations such as initiating a call with the mobile radio station that originated the call.
- ARI B-T 61 system (hereinafter also referred to as “ARIB system”) is established as a standard.
- the wireless channel has functions that can be used for both control and telephone calls, and no dedicated control channel is provided.
- the radio channel is not used, transmission on that radio channel is not performed and the system is idle. Therefore, as soon as the mobile radio station making the call confirms that no radio wave is being output in any of the radio channel bands, it performs processing for transmitting a call request message.
- the mobile radio station making the call confirms that no radio wave is being output in any of the radio channel bands, it performs processing for transmitting a call request message.
- other mobile radio stations that are in the standby state cannot infer in advance the timing at which the call message is sent, so transmission on the radio channel managed by the radio base station is not performed. Even at times, the reception state is always maintained.
- the mobile radio station that has received the call message from the radio base station determines the identification information (ID information) in the call message and switches to the call channel only if it matches the identification information of its own device. Process and start a call with the source mobile radio station. In this way, in the LTR method, when there is a call While there is an advantage that a link between mobile radio stations is established immediately, there is a problem that a mobile radio station in a standby state must always perform a reception operation.
- the control information sent from the radio base station on the control channel includes various messages such as broadcast information and call information.
- the control information sent on such a control channel has a superframe structure consisting of a plurality of frames, and what control information is included in which frame in the superframe. Can be specified.
- information on the structure of the superframe is included in the broadcast information in the control information, and the mobile radio station receives the broadcast information to identify in which frame the mobile station was called. can do. Since a call is made to other mobile radio stations other than the thus identified frame, each mobile radio station performs a reception operation only on the identified frame, and stops the reception operation in other frames. be able to.
- the control information has a superframe structure, so that the mobile wireless station can perform intermittent reception, compared to the case where the reception operation must always be performed. Therefore, there is an advantage that the operation period can be extended.
- the frame to be called is fixed, the longer the superframe, the longer it takes to establish a link between mobile radio stations.
- each mobile In addition to individual calls that individually call mobile radio stations, there is a group call that calls multiple mobile radio stations at once in a duplication, and the mobile radio station has the function of simultaneously waiting for multiple groups. For this reason, even if the super frame structure is adopted, it is necessary to confirm a plurality of frames as a result, and the advantage of extending the operation period due to the super frame structure is reduced. There's a problem.
- a user makes a call by turning on (for example, pressing) a PTT (Push-To-Talk) switch. Therefore, it is preferable that the period from when the PTT switch is pressed until the call processing is completed and the call is started is as short as possible.
- PTT Push-To-Talk
- the battery life is shortened by the current consumption in the standby state, so the current consumption is reduced as much as possible to extend the operation period. It is preferable to make it.
- the present invention has been made in view of the above-described circumstances, and enables a communication to be started in a short time and an operation period to be prolonged, a wireless communication system, a wireless communication control device, a wireless communication device, and a wireless communication device
- the purpose is to provide a communication method.
- a radio communication system provides a control channel and any one of a plurality of radio communication devices specified by information transmitted on the control channel.
- a wireless communication system that performs wireless communication using a plurality of assignable call channels, and at least a synchronization word and a channel on one control channel.
- a channel control device that transmits information of a frame structure having three areas of channel identification information and control information to at least one of the plurality of wireless communication devices. The channel control device operates to transmit functional channel identification information indicating the type of information transmitted in the area of the control information in the area of the channel identification information included in the information of the frame structure.
- each of the plurality of wireless communication devices receives the information on the frame structure on the control channel, by determining the type of functional channel identification information included in the information on the frame structure, in the area of the control information It is configured to operate so as to set the reception operation to one of multiple types of operations including reception stop operation. .
- the channel control apparatus instructs the idle message to specify the idle message as functional channel identification information.
- the identification information is transmitted, and each of the plurality of wireless communication devices determines that the received functional channel identification information is idle identification information, each of the plurality of wireless communication devices is an area of control information in the same frame as the functional channel identification information. It is also possible to operate so as to switch the reception operation to the reception stop operation.
- the channel control device transmits idle identification information as functional channel identification information when the information transmitted in the area of the control information is a message to be arbitrarily received on the wireless communication device side, and When each of the wireless communication devices determines that the received functional channel identification information is idle identification information, the reception operation in the control information area is continued according to the operation state of the own device. Movement May be set to either the operation or reception stop operation.
- the channel control device includes, in the frame structure information, random access control information indicating whether random access transmission is permitted or prohibited, and transmits the information in an area subsequent to the area of the control information. Each device may operate to switch to a reception restart operation that resumes reception in the random access control information area when the reception operation in the control information area is switched to the reception stop operation.
- a radio communication control apparatus includes: a control channel; and a plurality of communication channels that can be assigned to any of the plurality of radio communication apparatuses specified by information transmitted on the control channel.
- a wireless communication control device for controlling the used wireless communication,
- Channel control that transmits information of a frame structure having at least three areas of synchronization word, channel identification information, and control information to at least one of the plurality of wireless communication devices on one control channel Means. Then, the channel control means, in the area of the functional channel identification information included in the channel identification information among the information of the frame structure, the functional channel identification indicating the type of information transmitted in the control information area It is configured to operate to send information.
- the channel control means instructs the idle control to identify the idle message as functional channel identification information. Identification information may be transmitted.
- the channel control means is information transmitted in the control information area. May be operated to transmit identification information for instructing arbitrary reception as functional channel identification information.
- a wireless communication apparatus is a wireless communication apparatus that performs wireless communication using a control channel and a communication channel assigned by information transmitted on the control channel.
- Functional channel identification that indicates the type of information transmitted in the control information area, which is frame structure information having at least three areas of synchronization word, channel identification information, and control information on one control channel.
- Information transmitted in the area of channel identification information is included in the information of the frame structure received by the control channel transmission information receiving means for receiving from the radio base station and the control channel transmission information receiving means.
- the reception operation in the control information area can be performed in multiple types including the reception stop operation. Operation control means for setting any of the operations.
- the operation control means can identify an idle message that is different from the broadcast message and the paging message as information transmitted in the control information area by the functional channel identification information received by the control channel transmission information receiving means. When it is determined that it is idle identification information instructed to, the reception operation in the area of the control information in the same frame as the functional channel identification information may be switched to the reception stop operation. .
- the operation control means can specify a notification message or a paging message as information transmitted in the area of the control information based on the function channel identification information received by the control channel transmission information receiving means.
- the reception operation in the area of the control information in the same frame as the functional channel identification information is set to an operation for continuing reception of the information.
- the functional channel identification information received by the receiving means is idle identification information indicating that an idle message different from the broadcast message and the call message can be specified as information transmitted in the control information area
- the receiving operation in the area of the control information in the same frame as the functional channel identification information is either the operation to continue receiving information or the reception stopping operation according to the operating state of the own device. It may operate to set to.
- a radio communication method comprising: a control channel; a plurality of call channels that can be assigned to any one of a plurality of radio communication devices specified by information transmitted on the control channel; A wireless communication method that performs wireless communication using a wireless base station, and transmits information on a frame structure having at least three areas of a synchronization word, channel identification information, and control information from a wireless base station on one control channel.
- a function that transmits to at least one of the plurality of wireless communication devices and indicates the type of information transmitted in the area of control information in the area of function channel identification information included in the information of the frame structure Channel identification information is transmitted, and when each of the plurality of wireless communication devices receives the frame structure information on the control channel, the frame structure information is included in the frame structure information.
- the receiving operation in the area of control information is set to one of a plurality of types of operation, including the reception stop operation, including a series of steps.
- the information transmitted in the control information area is a notification message.
- idle identification information indicating that the idle message can be specified is transmitted as functional channel identification information from the radio base station, and each of the plurality of radio communication apparatuses
- processing is performed to switch the reception operation at the control information area in the same frame as the functional channel identification information to the reception stop operation. May be.
- idle identification information is transmitted from the wireless base station as functional channel identification information
- the reception operation in the control information area is received according to the operation state of the own device. May be set to either the operation to continue the reception or the reception stop operation.
- the frame structure information includes random access control information indicating whether random access transmission is permitted or prohibited, and is transmitted in an area subsequent to the area of the control information.
- the plurality of wireless communication devices In each case, when the reception operation in the control information area is switched to the reception stop operation, the reception restart operation for resuming the reception in the random access control information area may be switched.
- FIG. 1 is a configuration example of a radio communication system according to an embodiment of the present invention.
- FIG. 2 is a diagram illustrating an example of a frame structure of information transmitted by the line control device.
- FIG. 3 is a flowchart showing an example of control channel communication processing.
- FIG. 4 is a flowchart showing an example of the control channel reception process.
- FIG. 5 is a diagram for explaining an example of an operation in which the mobile transmitting / receiving apparatus receives information transmitted on the control channel.
- FIG. 6 is a diagram exemplifying a frame structure of information transmitted by the line control apparatus in the modification of the present invention.
- the operation period can be extended by increasing the frequency of intermittent reception while enabling a call to be started in a short time.
- this wireless communication system 100 includes at least one (generally, a plurality of) wireless base stations, each of which has a line control device 100 1 and at least one ( In general, there are a plurality of mobile transmission / reception apparatuses 1 and 2 as mobile radio stations.
- a line control device 1 0 1 and two mobile transmission / reception devices 1 0 2 are shown.
- the radio communication system 10 0 is configured such that a plurality of mobile transmission / reception devices 10 2 share a predetermined radio channel and transmit / receive radio frequency (RF) signals to / from radio base stations.
- RF radio frequency
- Each mobile transmission / reception device 1 0 2 is connected to another mobile via the RF link circuit control device 1 0 1. It enables voice communication (conversation) with other communication terminal devices connected to the mobile transmission / reception device 10 2 and the line control device 1 0 1.
- the line controller 1 0 1 manages a plurality of radio channels deployed by being divided into a plurality of frequency bands, and performs radio channel control for performing radio channel allocation control for each mobile transceiver 1 0 2 It has a function as a device.
- the line control device 1 0 1 can assign a plurality of radio channels to a control channel and one of the mobile transmission / reception devices 1 0 2 specified by the information transmitted on the control channel.
- a wireless communication service such as a voice call to each mobile transceiver 100.
- information having a frame structure as shown in FIGS. 2 (A) and 2 (B) is transmitted on the control channel from the line control device 1001 to each mobile transceiver device 102.
- Sent As shown in Fig. 2 (A), the information transmitted on the control channel from the line controller 1 0 1 includes the area of the synchronization word 3 1, the area of the channel identification information 3 2, and the control information 3 3 Including the area.
- the synchronization word 3 1 is used for synchronization processing for establishing synchronization in the wireless communication between the line control device 1 0 1 and each mobile transmission / reception device 1 0 2.
- the synchronization word 3 1 has a predetermined code pattern.
- the channel identification information 32 is used to identify the radio channel and function channel in each mobile transceiver 10 2.
- the area of the channel identification information 32 includes the area of the radio channel identification information 3 2 A and the area of the functional channel identification information 3 2 B as shown in FIG. 2 (B).
- Control information 3 3 is a notification message, call message, or other communication Indicates a message about control.
- control information 33 When the control information 33 is a broadcast message, it includes information unique to the radio communication system 100, information indicating the structure of the control channel used for control among the radio channels, and the like.
- the line control device 1 0 1 sends the mobile transmission / reception device 1 0 2 to the mobile transmission / reception device 1 0 2 in response to the mobile transmission / reception device 1 0 2 receiving a call from the calling communication terminal device.
- an idle message different from the notification message and the call message is prepared so that it can be transmitted from the line control device 1 0 1 to each mobile transmission / reception device 1 0 2.
- the idle message indicates that the information transmitted in the area of the control information 33 does not have a specific meaning for the mobile transceiver 100. That is, when the control information 33 is an idle message, the area of the control information 33 is synonymous with the unused state for the mobile transmitting / receiving device 10 2, and the mobile transmitting / receiving device 10 2 side It is not necessary to receive at
- the radio channel identification information 3 2 A shown in FIG. 2 (B) indicates that the radio channel transmitting the radio channel identification information 3 2 A is a control channel as a control radio channel, It shows whether the call channel is a radio channel.
- Functional channel identification information 3 2 B indicates the type of control information 33 transmitted in the same frame. That is, in the function channel identification information 3 2 B, the information transmitted in the area of the control information 33 after the area of the channel identification information 32 is an information message, a call message, or another message. It indicates which one of them.
- the control information 33 in the area of functional channel identification information 3 2 B Idle identification information indicating that it is a dollar message can be specified.
- FIG. 1 also shows an example of the configuration of the mobile transmission / reception apparatus 10.
- the mobile transmission / reception device 10 0 2 includes an antenna 5 1, a communication processing unit 5 2, a power supply unit 5 3, an audio processing unit 5 4, a PTT switch 5 5, and an operation control unit 5 6. .
- the antenna 51 is for receiving the RF signal transmitted from the radio base station and transmitting the RF signal to the radio base station.
- the antenna 51 is coupled to the communication processing unit 52.
- the communication processing unit 52 performs a receiving operation for demodulating the received data from the RF signal received by the antenna 51 and a modulation operation based on the transmission data generated by the sound processing unit 54 and the operation control unit 56. And a transmission function for transmitting an RF signal from the antenna 51.
- the power supply unit 53 includes a power supply source such as a battery and a power supply circuit such as a voltage stabilization circuit, and supplies power to each part of the mobile transceiver 100.
- a power supply source such as a battery
- a power supply circuit such as a voltage stabilization circuit
- the audio processing unit 54 is composed of, for example, a microphone, a speaker, an amplifier circuit, an audio encoding Z decoding circuit, and the like, and generates an audio data that is obtained by digitizing an audio signal corresponding to an externally acquired audio.
- the voice data demodulated by the communication processing unit 52 is converted into voice and output to the outside.
- a request for a call to the mobile base station is sent from the mobile transmitter / receiver device 102 to another mobile transmitter / receiver device 102 or a communication terminal device.
- a call request message is transmitted to the radio base station on the control channel, thereby An assignment is requested.
- the operation control unit 56 is composed of, for example, an MPU (micro-process sor unit) or the like, and is for controlling the operation of each part in the mobile transceiver 100.
- the operation control unit 56 determines the type of the function channel identification information transmitted from the radio base station on the control channel, so that the area of the control information 33 is transferred to the mobile transceiver 100. Control is performed so that the reception operation of the communication processing unit 52 during the period of reaching can be switched to one of multiple types of operations including the reception stop operation.
- the operation control unit 56 switches the reception operation of the communication processing unit 52 in the area of the control information 33 to the reception stop operation.
- the communication processing unit 52 is switched to a shut-off state in which the power supply from the power supply unit 53 to the communication processing unit 52 is stopped. It may be replaced.
- FIG. 3 is a flowchart showing an example of control channel communication processing executed by the line control device 1 0 1.
- the control channel communication process shown in FIG. 3 is performed when the mobile transmission / reception device 1 0 2 performs wireless communication with the line control device 1 0 1 on the control channel.
- This is a process for transmitting various types of information related to line control to the mobile transmission / reception device 1 0 2. For example, in response to the mobile transmission / reception device 1 0 2 starting transmission / reception processing on the control channel. Executed.
- the line control device 1 0 1 When the control channel communication process shown in FIG. 3 is started, the line control device 1 0 1 first performs an initial setting to use one of the radio channels as a control channel, for example, update of channel assignment (step) S 1 0 1).
- the line control device 1001 may be able to dynamically select and use any one of a plurality of radio channels managed by itself as a control channel. In this case, the control channel can be reassigned by updating the channel assignment.
- Step S 1 0 2 (Message) is specified (Step S 1 0 2). At this time, it is determined whether transmission target information exists (step S 1 0 3). When it is determined in step S 1 0 3 that the transmission target information exists (step S 1 0 3; Y es), the transmission target information is notified to the mobile transceiver 100 2. It is determined whether the message need not be present (step S 1 0 4). Here, the determination as to whether the transmission target information is a message that needs to be notified to the mobile transmission / reception apparatus 100 2 may be performed based on the specifications of the wireless communication system 100. .
- step S 1 0 3 When it is determined in step S 1 0 3 that there is no information to be transmitted (step S 1 0 3; No), it is determined in step SI 0 4 that the message does not require notification. When there is a message (step S 1 0 4; Y es), there is no message that needs to be notified to the mobile transceiver 100 2, so the area of the control information 33 is prepared in advance. Change to a dollar message (step S 1 0 5). At this time, information transmitted in the area of functional channel identification information 3 2 B in the same frame is set as idle identification information (step S 1 0 6).
- step S 1 0 4 When it is determined in step S 1 0 4 that the message needs to be notified to the mobile transceiver device 1 0 2 (step S 1 0 4; No), the message is specified in step S 1 0 2 Set the transmission target information in the area of control information 33, and the content of the transmission target information set in the area of control information 33 in the area of function channel identification information 3 2 B in the same frame. Set according to (Step S 1 0 7). As a result, even if the frame to be set in the area of the control information 3 3 is transmitted without fixing the call message as the transmission target, the area of the functional channel identification information 3 2 B on the mobile transceiver 1 0 2 side By reading, the frame that contains the call message can be specified. That is, the mobile transmission / reception apparatus 10 2 can identify the frame including the call message without reading the area of the control information 33.
- the line control device 1 0 1 transmits information for one frame to each mobile transceiver 1 0 2 on the control channel (step S 1 0 8). After that, the line control device 100 determines whether or not to change the setting related to the control channel (step S 1 0 9). For example, when the radio channel used as the control channel is used as the call channel, or when the radio channel used as the call channel is reassigned to the control channel, it is necessary to change the settings related to the control channel. There is.
- step S 1 0 9 When it is determined in step S 1 0 9 that the setting related to the control channel is to be changed (step S 1 0 9; Y es), the control channel communication process shown in FIG. 3 is terminated and the setting related to the control channel is set. The execution of a process prepared in advance for changing is started. On the other hand, when it is determined in step S 1 0 9 that the setting related to the control channel is not changed (step S 1 0 9; No), the process of step S 1 0 2 is performed. By returning, the process for transmitting information in the next frame is continued.
- FIG. 4 is a flowchart showing an example of a control channel reception process executed by the mobile transmission / reception device 102 to receive information sent from the line control device 100 on the control channel.
- the mobile transmission / reception device 1 0 2 first performs control.
- Initial setting is performed to start reception of information sent from the line control device 101 on the control channel (step S 1 2 1).
- the communication processing unit 52 can be reassigned after switching from the call channel used during a voice call to the control channel under the control of the operation control unit 56, or by the setting in the line control device 100.
- Establish frame synchronization with the synchronization word 3 1 received on the control channel for example, after shifting to the control channel, and set the information sent from the line controller 1 0 1 on the control channel to be receivable .
- Step S 1 2 the functional channel identification information 3 2 B included in the received data.
- Step S 1 2 3 it is determined whether or not the functional channel identification information 3 2 B read at this time is idle identification information.
- step S 1 2 3 If it is determined in step S 1 2 3 that it is idle identification information (step S 1 2 3; Y es), information having a frame structure as shown in Fig. 2 (A) is also displayed. It is determined whether or not the period for receiving the control information 33 error is reached (step S 1 2 4). Here, if the area of functional channel identification information 3 2 B is located immediately before the area of control information 3 3, it is determined in step S 1 2 3 that it is idle identification information. At this point, it is sufficient to determine that it is time to receive the control information 33 area. If it is determined in step S 1 2 3 that it is not idle identification information (step S 1 2 3; No), the reception operation for receiving the information transmitted on the control channel is continued. (Step S 1 2 5).
- step S 1 2 4 If it is determined in step S 1 2 4 that it is not the period for receiving the control information 3 3 area (step S 1 2 4; No), the process of step S 1 2 4 is performed. It only needs to wait until the period for receiving the control information 33 area is reached. At this time, control information
- the reception operation for receiving information transmitted on the control channel may be continued until the period for receiving the area of 3 is reached, for example, in the same manner as the processing in step S 1 2.
- step S 1 2 4 when it is determined in step S 1 2 4 that the period for receiving the control information 3 3 area is reached (step S 1 2
- the operation control unit 56 controls the operation in the communication processing unit 52 to be a reception stop operation for stopping reception of information sent from the line control device 100 on the control channel ( Step S 1 2 6). At this time, the operation control unit 56 may cut off the power supply from the power supply unit 53 to the communication processing unit 52 to place the communication processing unit 52 in a reception stopped state.
- step S 1 2 7 After performing the control to stop the reception in step S 1 2 6, for example, by determining whether or not it is time to arrive at the rear end of the control information 33 by using a predetermined timer, etc. It is determined whether or not it is time to finish receiving information for one frame (step S 1 2 7). At this time, if it is determined that the timing for ending the reception of information for one frame has not been reached (step S 1 2 7; No), the process returns to step S 1 26 and reception is stopped. Let state continue.
- step S 1 2 7 If it is determined in step S 1 2 7 that the reception of information for one frame has been completed (step S 1 2 7; Y es), the operation control unit 56 controls the operation in the communication processing unit 52 to be a reception resuming operation for resuming reception of information sent from the line control device 100 on the control channel (step S). 1 2 8). At this time, the operation control unit 56 may resume the reception operation in the communication processing unit 52 by resuming the power supply from the power supply unit 53 to the communication processing unit 52.
- step S 1 29 After the processing of step S 1 2 5 or step S 1 2 8 is executed in this way, for example, the control that has been reassigned by the transition from the control channel to the speech channel or the setting in the line controller 1 0 1 It is determined whether or not to perform a wireless channel transition such as a channel transition (step S 1 29). At this time, if it is determined in the mobile transceiver apparatus 102 that the radio channel to be used is shifted (step S 1 2 9; Y es), it is prepared in advance to shift the radio channel. Various settings are made by executing the processing described above (step S 1 3 0). On the other hand, if it is determined in step S 1 2 9 that the radio channel is not changed (step S 1 2 9; No), the process returns to step S 1 2 2. Thus, the process for receiving the information transmitted in the next frame is continuously executed.
- a wireless channel transition such as a channel transition
- Fig. 5 (A) is a timing diagram of the operation in which the line controller 1 0 1 transmits information to the mobile transceiver 1 0 2 on the control channel.
- FIG. 5 (B) is a timing chart of the operation in which the mobile transmitting / receiving device 100 receives the information sent from the line control device 101 on the control channel.
- the line control device 100 starts transmission of information included in the first frame at the evening time T 1.
- a notification message that needs to be notified to the mobile transmission / reception apparatus 10 2 is included in the area of the control information 33.
- functional channel identification information 3 2 B included in the area of channel identification information 32 indicates that the information transmitted in the area of control information 33 is a broadcast message.
- step S 1 2 shown in FIG.
- step 3 it is determined that it is not idle identification information (step S 1 2 3; No). Based on this determination result, the processing of step S 1 25 shown in FIG. 4 is executed, and as shown in FIG. 5 (B), the timing that is the period for receiving the area of control information 33 Even in the period after T2, the receiving operation of the information sent on the control channel is continued.
- the line control device 101 starts transmission of information included in the second frame at sunset T3.
- this second frame for example, if there is no valid message to be transmitted such as a notification message or a call message in the process of step S 1 0 3 shown in FIG. 3 or the process of step S 1 0 4 It is assumed that it has been determined (step S 1 0 3; No or step S 1 0 4; Y es). Therefore, in the line controller 1 0 1, as shown in FIG. By executing the process of step S 1 0 5, an idle message is set in the area of the control information 33 in the second frame. At this time, by performing the process of step S 10 06 shown in FIG. 3, the function channel identification information 3 2 B included in the same frame is set to the idle identification information indicating the idle message.
- the function channel identification information 3 2 B included in the same frame is set to the idle identification information indicating the idle message.
- step S 1 2 3 shown in FIG. 4 the functional channel identification information 3 2 B included in the second frame is idle identification information indicating an idle message.
- the operation control unit 56 is shown in FIG. 4 at the evening timing T 4 in which it is determined that the area of the control information 33 is received in the process of step S 1 24 shown in FIG.
- control is performed to switch the operation of the communication processing unit 52 to the reception stop operation.
- the operation control unit 56 continues to step S 1 2 shown in FIG. 4 until the time T 5 when the period for receiving the area of the control information 3 3 ends and the reception of information for one frame ends is reached.
- the communication processing unit 52 is maintained in the reception stopped state.
- the process of step S1 28 shown in FIG. 4 is executed to control the operation of the communication processor 52 to the reception restart operation.
- the reception operation by the communication processing unit 52 is executed again.
- step S 1 0 3 shown in FIG. 3, it is determined that there is no message to be transmitted (step S 1 0 3; No), or the process of step S 1 0 4 It is assumed that it is determined that the message is not required to be notified to the mobile transmitting / receiving apparatus 10 2 (step S 1 0 4; Y es).
- an idle message is set in the area of the control information 33 in the third frame in the same manner as when the second frame is transmitted.
- functional channel identification information 3 2 B included in the same frame is set as idle identification information.
- the operation control unit 56 In the mobile transmitting / receiving apparatus 10 2, it is determined that the functional channel identification information 3 2 B included in the third frame is idle identification information in the process of step S 1 23 shown in FIG. Therefore, the operation control unit 56, at the timing T6 when it is determined that it is the period for receiving the area of the control information 33, in the same manner as when the second frame is received. Control to switch the operation to the reception stop operation. Thereafter, the operation control unit 56 maintains the communication processing unit 52 in the reception stopped state until the timing T 7 when reception of the information included in the third frame ends. When the timing T 7 is reached, the operation of the communication processing unit 52 is switched to the reception restart operation, and the reception operation is executed again during the period after the timing T 7.
- the information having the frame structure transmitted from the line control device 1 0 1 to the mobile transmission / reception device 1 0 2 through the control channel is transmitted in the area of the control information 3 3.
- Functional channel identification information indicating 3 2 B area is included.
- the mobile transmitting / receiving apparatus 1 0 2 performs step S shown in 1 2 Based on the functional channel identification information 3 2 B read in the process 2 2 B, for example, when the functional channel identification information 3 2 B is idle identification information, it switches to the reception stop operation, but other than idle identification information In such a case, the reception operation in the area of the control information 33 can be switched to one of a plurality of types of operations including the reception stop operation, such as continuing the reception operation.
- the mobile transmission / reception device 1 0 2 can detect that a paging message has been sent in an arbitrary frame, so that a call channel can be allocated for a voice call. Therefore, the time required to move from the control channel to the control channel can be shortened, and a communication link can be established with the other communication terminal device in a short time to start a call.
- the control information 3 3 is stored on the line controller 1 0 1 side.
- information messages should be set as transmission targets in the area.
- the line controller 1 0 1 receives an effective message that needs to be notified to the mobile transceiver 1 0 2 by the processing of step S 1 0 3 and step S 1 0 4 shown in FIG.
- an idle message is set in the area of control information 33, and functional channel identification information 32B in the same frame is set as idle identification information.
- the mobile transceiver 1 0 2 controls when the functional channel identification information 3 2 B is idle identification information.
- the present invention is not limited to the above embodiment, and various modifications and applications are possible. That is, in the above embodiment, the description has been given assuming that the information transmitted from the line control device 1 0 1 to the mobile transmission / reception device 1 0 2 on the control channel has a frame structure as shown in FIG. However, it may have a different frame structure. As a specific example, it may have a frame structure including an area of random access control information 35 as shown in FIG.
- the PTT switch 5 5 is turned on (for example, pressed) by the mobile transceiver 100 2.
- a call request message is immediately sent from the mobile transmission / reception device 100 to the line control device 100 on the control channel.
- access control information indicating whether random access transmission is permitted or prohibited, for example, by checking the availability of the radio channel.
- the area of the random access control information 35 is separated from the area of the control information 33 and is arranged at a position subsequent to the area of the control information 33. Then, the access control information indicating either random access transmission permission or prohibition may be set in the area of random access control information 35.
- the line efficiency of the control channel can be prevented from deteriorating, and the number of times that an idle message can be set in the control information 33 area is not reduced.
- the random access provided by the wireless communication system 100 is not limited to the slot aloha system, for example, the ICMA-PE (Idle signal Casting Multiple Access-Partial Echo) system used in the ARIB-T61 system. It may be a thing.
- the line controller 1 0 1 has busy / idle information indicating whether the radio channel is in use (busy) or not in use (idle) in the area of random access control information 3 5, What is necessary is just to set the collision control information etc. which made a part of the uplink information transmitted from each mobile transmission / reception apparatus 102 a partial echo.
- the process shown in the flowchart of FIG. 4 may be changed as follows.
- the mobile transmitter / receiver 10 0 2 determines that the period for receiving the area of the control information 3 3 has been reached in the process of step S 1 24 shown in FIG.
- the control information 3 3 It is determined whether the period for receiving the area has ended and the period for receiving the random access control information 35 area has come. At this time, if it is determined that the period for receiving the random access control information 35 area has been reached, the process proceeds to step S 1 28 shown in FIG. What is necessary is just to switch. On the other hand, if it is determined that it is not the period for receiving the area of the random access control information 35, the process may return to step S1 26 and continue the reception stop state.
- the area of random access control information 35 is separated from the area of control information 33, and is placed at a position subsequent to the area of control information 33, so that the area of control information 33 is idle.
- the number of times a message is set increases, and the frequency of intermittent reception can be improved on the mobile transmitting / receiving device 10 2 side, thereby extending the operation period.
- a reservation type call operation may be permitted.
- the control information has a superframe structure. Therefore, while providing the control information in the superframe structure, and providing the area for the functional channel identification information 3 2 B as in the above embodiment, control that does not need to be received on the mobile transceiver 100 2 side is provided. Information may be identified. In this case, the mobile transmitter / receiver 1 0 2 controls information that does not need to be received based on the functional channel identification information 3 2 B. By switching to the reception stop operation during the period in which the information is transmitted, more efficient intermittent reception can be performed.
- an idle message when an idle message is set in the area of the control information 3 3 in the line control device 1 0 1, it is transmitted in the area of the functional channel identification information 3 2 B in the same frame.
- the information was set as idle identification information.
- the mobile transmission / reception apparatus 10 2 performs control to stop the reception during the period when the X channel of the control information 33 is received when the functional channel identification information 3 2 B is idle identification information.
- the present invention is not limited to this.
- the information to be transmitted in the area of the functional channel identification information 32B It may be set in dollar identification information.
- the mobile transmitting / receiving apparatus 10 2 as a mobile station that is in a standby state by monitoring the control channel of a certain radio base station, the broadcast message is repeated unless the content of the broadcast message changes. There is no need to receive.
- the wireless communication system 10 0 includes a plurality of wireless base stations
- the mobile transmission / reception device 10 2 as a mobile station uses the electric field strength of the control channel provided by each wireless base station. Is monitoring. And it can move to the radio base station with the strongest control channel.
- the mobile transmission / reception device 102 performs location registration processing when it moves to a new radio base station.
- the mobile transmission / reception device 1 0 2 needs to determine whether or not the radio base station is valid. At this time, it is possible to determine whether or not the base station is an effective base station by reading information on the system included in the broadcast message.
- the mobile transceiver 100 capable of shifting the control channel between a plurality of radio base stations, if the broadcast message is frequently transmitted, it is determined whether the radio base station is valid. It is convenient to be able to judge in a short time. However, after the location registration process is completed and the control channel is set in the standby state, the frequency of intermittent reception on the mobile transmission / reception device 10 2 side decreases when the notification message is frequently transmitted. become.
- the function channel identification information 3 2 B area The information to be transmitted is set to identification information indicating a notification message.
- a notification message is set in the control information 33 area.
- the mobile transmitter / receiver 1 0 2 can receive arbitrarily a notification message as information to be transmitted, the information transmitted in the area of the functional channel identification information 3 2 B is the idle identification information. On the other hand, a notification message is set in the area of the control information 33.
- the mobile transmission / reception device 10 0 2 controls the area of the control information 33 according to the operation state of the own device even when the functional channel identification information 3 2 B is idle identification information. You only need to decide whether to receive it. For example, on the control channel provided by the same radio base station The mobile transmission / reception device 1 0 2 in standby state receives the control information 3 3 area only when the function channel identification information 3 2 B is identification information indicating a notification message or a paging message. When the identification information 3 2 B is idle identification information, the operation is switched to the reception stop operation during the period in which the area of the control information 33 is received.
- the mobile transmission / reception apparatus 10 0 2 that has moved from another radio base station, even when the functional channel identification information 3 2 B is idle identification information, it is effective in the area of the control information 33. It is determined that the message is included, and the message is received. This makes it possible to obtain information about the system necessary for location registration processing immediately.
- the functional channel identification information 32B is not limited to the idle identification information, and a message other than the broadcast message is not limited.
- the function channel identification information 3 2 B may be set to the idle identification information.
- a plurality of types of identification information may be provided as idle identification information. For example, when the area of control information 33 is changed to an idle message, and when the mobile transmission / reception device 1 0 2 is a notification message that can be arbitrarily received, different types of idle identification information are identified as functional channel identifications.
- Information 3 2 B may be set.
- the mobile transmitter / receiver 1 0 2 switches the reception operation in the area of the control information 33 according to the type of idle identification information set in the function channel identification information 3 2 B according to the operation state of the own device, etc.
- smooth control such as rapid transition between radio base stations while performing efficient intermittent reception.
- a land mobile radio system that can minimize the period from when the PTT switch is pressed to when the call process is completed and when the call is started, as well as reducing current consumption and extending battery life as much as possible. Therefore, it is possible to realize a portable type mobile radio terminal that can extend the operation period.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE05785628T DE05785628T1 (de) | 2004-09-21 | 2005-09-16 | System zur drahtlosen kommunikation, steuervorrichtung zur drahtlosen kommunikation, vorrichtung zur drahtlosen kommunikation und verfahren zur drahtlosen kommunikation |
EP05785628A EP1802146B1 (en) | 2004-09-21 | 2005-09-16 | Wireless communication system, wireless communication control apparatus, wireless communication apparatus and wireless communication method |
CN2005800395397A CN101061731B (zh) | 2004-09-21 | 2005-09-16 | 无线通信系统、无线通信控制设备、无线通信设备和无线通信方法 |
US11/663,221 US7738436B2 (en) | 2004-09-21 | 2005-09-16 | Wireless communication system, wireless communication control apparatus, wireless communication apparatus and wireless communication method |
Applications Claiming Priority (2)
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JP2004-273885 | 2004-09-21 | ||
JP2004273885A JP4411166B2 (ja) | 2004-09-21 | 2004-09-21 | 無線通信システム、無線通信制御装置、無線通信装置及び無線通信方法 |
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WO2006033424A1 true WO2006033424A1 (ja) | 2006-03-30 |
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PCT/JP2005/017559 WO2006033424A1 (ja) | 2004-09-21 | 2005-09-16 | 無線通信システム、無線通信制御装置、無線通信装置 及び無線通信方法 |
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US (1) | US7738436B2 (ja) |
EP (1) | EP1802146B1 (ja) |
JP (1) | JP4411166B2 (ja) |
CN (1) | CN101061731B (ja) |
DE (1) | DE05785628T1 (ja) |
RU (1) | RU2391799C2 (ja) |
WO (1) | WO2006033424A1 (ja) |
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US8391400B2 (en) | 2007-06-20 | 2013-03-05 | Qualcomm Incorporated | Control channel format indicator frequency mapping |
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CN104539395B (zh) | 2007-01-09 | 2019-06-18 | 华为技术有限公司 | 基站装置、移动台装置、控制信息发送方法、控制信息接收方法及程序 |
US7853248B2 (en) * | 2007-09-21 | 2010-12-14 | Yahoo! Inc. | SMS spam control |
JP5151549B2 (ja) * | 2008-02-27 | 2013-02-27 | 株式会社Jvcケンウッド | 倒壊家屋情報通知システム |
JP5223592B2 (ja) | 2008-10-28 | 2013-06-26 | アイコム株式会社 | 無線通信システム、無線通信方法、無線通信端末装置、中継装置、並びに、中継システム |
RU2483485C2 (ru) * | 2008-12-29 | 2013-05-27 | ЗетТиИ Корпорейшн | Способ и система для управления энергосбережением в базовой станции |
US20110069657A1 (en) * | 2009-09-09 | 2011-03-24 | Qualcomm Incorporated | System and method for the simultaneous transmission and reception of flo and flo-ev data over a multi-frequency network |
CN102142887B (zh) * | 2010-06-18 | 2013-06-26 | 北京大学 | 周期性间断发送的语音码流平滑传输方法及系统 |
US10638464B2 (en) | 2011-04-01 | 2020-04-28 | Futurewei Technologies, Inc. | System and method for transmission and reception of control channels in a communications system |
US9442881B1 (en) | 2011-08-31 | 2016-09-13 | Yahoo! Inc. | Anti-spam transient entity classification |
WO2013153515A2 (en) * | 2012-04-09 | 2013-10-17 | Telefonaktiebolaget L M Ericsson (Publ) | Managing uncertain measurement occasions |
KR101897429B1 (ko) * | 2012-09-27 | 2018-09-10 | 알까뗄 루슨트 | 물리적 다운링크 제어 채널들의 리소스들을 결정하기 위한 방법 |
WO2016004600A1 (en) * | 2014-07-10 | 2016-01-14 | Motorola Solutions, Inc. | Methods and systems for simultaneous talking in a talkgroup using a dynamic channel chain |
CN112860613B (zh) * | 2021-04-06 | 2024-04-19 | 北京集创北方科技股份有限公司 | 通信系统 |
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Also Published As
Publication number | Publication date |
---|---|
RU2007115049A (ru) | 2008-10-27 |
EP1802146B1 (en) | 2013-01-16 |
DE05785628T1 (de) | 2007-11-08 |
EP1802146A4 (en) | 2011-10-12 |
US20080043678A1 (en) | 2008-02-21 |
CN101061731B (zh) | 2010-12-08 |
JP4411166B2 (ja) | 2010-02-10 |
US7738436B2 (en) | 2010-06-15 |
RU2391799C2 (ru) | 2010-06-10 |
EP1802146A1 (en) | 2007-06-27 |
JP2006093869A (ja) | 2006-04-06 |
CN101061731A (zh) | 2007-10-24 |
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