JP4403342B2 - Wireless transmission control method, wireless transmission control device, and wireless transmission device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, for example, a radio transmission control method, a radio transmission control device, and a radio transmission device that are suitable for application in the case where a local area network (LAN) is configured between a plurality of devices by transmitting radio signals to various devices. It is about.
[0002]
[Prior art]
Conventionally, in a communication system such as a mobile phone, for example, only an intermittent reception cycle is defined in the intermittent reception mode, and for information transmission, according to a request from a corresponding transmission device, a predetermined random access channel is used, A method of notifying a transmission request to a network base station has been used.
[0003]
In this method, since the mobile terminal device is managed relatively roughly, by defining only the intermittent reception period as described above, the power consumption of the mobile device can be reduced. It was possible.
[0004]
Further, as a so-called sleep mode indicating a sleep state in a conventional wireless communication system, a period in which intermittent transmission / reception is generally performed is defined, and a method in which information transmission / reception is not performed over the period of the period has been assumed.
[0005]
For this reason, the above-described method has an advantage that the operation of the transmission apparatus can be partially stopped over the intermittent transmission / reception period, so that the power consumption of the transmission apparatus can be reduced. .
[0006]
[Problems to be solved by the invention]
In the setting of only the intermittent reception cycle in the communication system such as the conventional mobile phone described above, when the mobile device is turned off, there is no mobile station that has been turned off in the corresponding network. There was an inconvenience that this could not be detected.
[0007]
That is, in a communication system such as a mobile phone, when mobile stations registered in a predetermined location registration area are called all at once and cannot respond to the call, the mobile station side power is turned off for the first time. If this is applied to a small-scale network, the system will continue to operate without knowing the existence of the mobile station. There was an inconvenience that quality deteriorated.
[0008]
In addition, in a network system such as a cellular phone, since it is considered mainly to reduce power consumption in a mobile station, there is a disadvantage that it is difficult to reduce power consumption in the entire network.
[0009]
Further, in the conventional definition of intermittent transmission / reception cycle, since the transmission cycle and the reception cycle are generally defined at the same time, the parameters are determined based on the cycle in which the reception must be performed. Since a cycle parameter for transmission is determined depending on the cycle, a flexible transmission cycle cannot be set, and the effect of reducing the power consumption of the transmission apparatus is reduced.
[0010]
Therefore, the present invention has been made in view of such a point, and a wireless transmission control method, a wireless transmission control device, and a wireless transmission control device capable of confirming a transmission device existing in a network even in a sleep mode. It is an object to provide a wireless transmission device.
[0011]
[Means for Solving the Problems]
Here, the wireless transmission control method of the present invention is a wireless transmission control method in which a wireless network is configured using a transmission device as a plurality of communication stations, and transmission control of the corresponding wireless network is executed. There is a management area for exchanging management information and a data area for exchanging data. A predetermined frame period is provided, and the frame period is 3 or more Integer multiple Set a sleep cycle and an operation cycle that is an integer multiple of 2 or more of the frame cycle shorter than the sleep cycle. Exchange information.
[0012]
As a result, in order to check the transmission apparatus existing in the network, even in the case of the transmission apparatus in which the sleep mode is defined, the predetermined information is transmitted at a predetermined period, so that a predetermined period is obtained. Information can be exchanged between the control station and the communication station as the terminal station.
[0013]
In addition, in order for the communication station in the sleep mode to transmit uplink management information, the same information as in the normal operation mode can be maintained by receiving information over a plurality of frames.
[0014]
In addition, the wireless transmission control device of the present invention sets a first cycle in which information is intermittently transmitted from the transmission device serving as a control station of the wireless network to the corresponding communication station in the sleep mode, and the corresponding communication station receives data. Then, a second period in which information is intermittently transmitted from the corresponding communication station in the sleep mode to the control station is set.
[0015]
Accordingly, the first cycle for receiving the downlink management information and the second cycle for transmitting the uplink management information are defined as the cycle for intermittently starting the communication station in the sleep mode. Therefore, information can be received or transmitted periodically at different timings.
[0016]
In addition, the radio transmission control device according to the present invention, as necessary, in the first period in which the corresponding communication station receives downlink management information in order for the control station to activate the communication station in the sleep mode. Notification of predetermined activation information is performed.
[0017]
As a result, the control station transmits information to the corresponding communication station at a constant cycle, and by using the same method as the normal network management procedure, it is possible to facilitate recovery of the corresponding communication station from the sleep mode. it can.
[0018]
In addition, the wireless transmission control method of the present invention uses the station synchronization section existing in the first period to cancel the sleep mode from the communication station in the sleep mode, and sets the sleep mode to the control station. A release request is made.
[0019]
Accordingly, the communication station can set the first intermittent reception period in conjunction with the period in which the sleep mode cancellation instruction is transmitted from the control station.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
In the wireless transmission control method according to the present embodiment, when a communication station in the sleep mode performs an intermittent operation at a predetermined cycle, the communication station receives the first cycle and whether or not there is an activation request from the control station. And the corresponding communication station transmits information in the second period to notify the control station that it exists in the network.
[0021]
This embodiment will be described below. FIG. 1 is a diagram illustrating a configuration example of a network system to which a radio transmission control method according to the present embodiment is applied.
For example, as shown in FIG. 1, a personal computer 1 and a printer output device 2 are connected to the wireless transmission device 11 via a cable or the like. Similarly, a VTR (video tape recorder) 3 is wired to the wireless transmission device 12 via a cable or the like. Similarly, the telephone device 5 and the set top box 4 are wired to the wireless transmission device 13 via a cable or the like. Similarly, the television receiver 6 and the game device 7 are wired to the wireless transmission device 14 via a cable or the like. In this way, each device is connected to each wireless transmission device, and each wireless transmission device constitutes the network 15.
[0022]
Here, for convenience, the personal computer 1 becomes the owner of isochronous transmission and notifies the predetermined desired quality via the wireless transmission device 11, and the set top box 4 becomes a talker for isochronous transmission and passes through the wireless transmission device 13. Information transmission is performed, the VTR 3 becomes a listener for isochronous transmission, information reception is performed via the wireless transmission device 12, and predetermined bandwidth reservation transmission is performed from the wireless transmission device 13 to the wireless transmission device 12.
[0023]
In addition, the wireless transmission device 11 serving as a control station of the network 15 collects these band reservation transmissions.
[0024]
FIG. 2 shows a configuration example of the radio transmission apparatuses 11 to 14 constituting each communication station.
Here, the wireless transmission apparatuses 11 to 14 are basically configured in common, and an antenna 21 that performs transmission and reception, and a wireless transmission / reception processing unit 22 that is connected to the antenna 21 and performs wireless transmission processing and wireless reception processing. It is set as the structure which can perform radio | wireless transmission between other transmission apparatuses.
[0025]
In this case, as a transmission method in which transmission and reception are performed by the wireless transmission / reception processing unit 22 of this example, for example, a transmission method using a multicarrier signal referred to as an OFDM (Orthogonal Frequency Division Multiplex) method is applied. As a frequency used for transmission and reception, for example, a very high frequency band (for example, 5 GHz band) is used.
[0026]
In the case of this example, a relatively weak output is set for the transmission output. For example, when used indoors, the output is such that wireless transmission over a relatively short distance of several meters to several tens of meters is possible. It is as.
[0027]
A data conversion unit 23 is provided that performs data conversion of a signal received by the wireless transmission / reception processing unit 22 and data conversion of a signal transmitted by the wireless transmission / reception processing unit 22.
[0028]
The data converted by the data conversion unit 23 is supplied to the connected device 28 via the interface unit 24, and the data supplied from the connected device 28 is supplied to the data conversion unit via the interface unit 24. 23 is configured to be able to be supplied to 23 and converted.
[0029]
Here, as an external interface of the interface unit 24 of the wireless transmission device, for example, audio or video information or various data information is transmitted to a device 28 connected via a high-speed serial bus 27 such as IEEE1394 format. The configuration is such that transmission and reception can be performed.
[0030]
Or you may make it comprise so that these radio | wireless transmission apparatuses may be incorporated in the main body of the apparatus 28 connected.
[0031]
In addition, each unit in each wireless transmission device is configured to execute processing based on the control of the control unit 25 configured by a microcomputer or the like.
[0032]
In this case, when the signal received by the wireless transmission / reception processing unit 22 of each wireless transmission device is a signal in the management area, the received signal is supplied to the control unit 25 via the data conversion unit 23 to be controlled. The unit 25 is configured to set each unit in the state indicated by the received information.
[0033]
Further, an internal memory 26 is connected to the control unit 25, and the internal memory 26 includes data necessary for communication control, the number of communication stations constituting the network, the number of reserved bandwidths, and the like of the wireless network and the wireless transmission path. It is configured to temporarily store information on the usage method.
[0034]
Further, in the wireless transmission device serving as the control station 11 of the network, a cycle start (CS) signal to be described later of the corresponding network is transmitted from the control unit 25 to the wireless transmission / reception processing unit 22 via the data conversion unit 23 at a predetermined frame period. It is configured to be supplied and wirelessly transmitted.
[0035]
In addition, in the transmission apparatuses 12 to 14 other than the network control station, when the received signal is a cycle start (CS) signal, the received signal is supplied to the control unit 25 via the data conversion unit 23. Thus, the control unit 25 determines the reception timing of the synchronization signal, sets the frame period based on the synchronization signal, and executes the communication control process at the frame period.
[0036]
FIG. 3 is a diagram illustrating a configuration example of a radio transmission frame according to the present embodiment. Here, for convenience, the frame is defined and shown, but such a frame structure is not necessarily required. In the figure, in the wireless transmission path 30, a transmission frame that arrives at every fixed transmission frame period 31 is defined, and a management information transmission area 32 and an information transmission area 33 are provided therein.
[0037]
At the head of this frame is a downlink management information transmission section 34 (frame start (FS)) for reporting frame synchronization and network common information, followed by time information correction as necessary. A transmission section 35 (cycle report (CR: Cycle Report)) is arranged, and a station synchronization signal transmission / reception section 36 (station sync (SS: Station Sync)) is arranged.
[0038]
The downlink management information transmission section (FS) is used for transmitting information that needs to be shared in the network from the control station, and is composed of a fixed-length area and a variable-length area.
[0039]
In the fixed-length area, in order to specify the length of the variable-length area, the number of communication stations transmitted in the station synchronization signal transmission / reception section (SS) and the number of band reserved transmission areas (RSV) are specified. In this variable length area, a communication station transmitted in the station synchronization signal transmission / reception section (SS) and a bandwidth reservation transmission area (RSV) are designated.
[0040]
This station synchronization signal transmission / reception section (SS) has a predetermined length and is assigned to each communication station constituting the network by a downlink management information with a certain period according to downlink management information. Possible configurations are considered.
[0041]
For example, by receiving all of the station synchronization signal transmission / reception section (SS) other than the transmission part of the own station, it is possible to grasp the connection link state with the communication stations existing around the own station. it can.
[0042]
Furthermore, each communication station can grasp the network connection status by reporting this connection link status in the information transmitted by the next station in the station synchronization signal transmission / reception section (SS). As a configuration.
[0043]
The information transmission area 33 includes a bandwidth reservation transmission area (RSV) 37 set as necessary, a centralized asynchronous transmission area (ASY: Asynchronous) 38 in which the control station performs transmission control, and transmission from the control station. It is composed of a distributed control unused area (NUA) 39 that does not perform control.
[0044]
That is, if there is no need for bandwidth reservation transmission (RSV) or unused area (NUA), the entire information transmission area 33 can be transmitted as an asynchronous transmission area (ASY) 38 of centralized management.
[0045]
By adopting such a frame structure, isochronous transmission defined by, for example, the IEEE 1394 format is performed in the band reserved transmission area (RSV) 37, and asynchronous (Asynchrono) is performed in the asynchronous transmission area (ASY) 38. It is preferable that the transmission can be performed.
[0046]
FIG. 4 is a diagram illustrating an operation example of the procedure sequence for shifting from the normal mode to the sleep mode.
In the figure, a station sync packet (SSP) in which the sleep mode application bit 44 is turned on (ON) is transmitted to the control station 41 from the party station 42 that is going to shift from the normal mode 43 to the sleep mode 46.
[0047]
In the control station 41 that has received the request to shift to the sleep mode 46 by turning on the sleep mode application bit 44 described above, the SSP request bit in the corresponding station information of FSP (Frame StartPacket) is turned off (OFF). By doing so, it notifies the parties concerned 42 of the transition from the normal mode 43 to the sleep mode 46.
[0048]
Further, it is assumed that the party 42 having received the FSP having the description to turn off the SSP request bit in the corresponding station information described above shifts to the sleep mode 46 thereafter.
[0049]
FIG. 5 is a diagram illustrating an operation example of a sequence of a procedure for transition from the sleep mode to the normal mode by the parties concerned.
In the figure, the SSP with the sleep mode application bit 54 turned off is transmitted from the party 52 that is going to shift from the sleep mode 53 to the normal mode 56 to the control station 51.
[0050]
In the control station 51 that has received the request to shift to the normal mode 56 by turning off the sleep mode application bit 54 described above, the SSP request bit 55 in the corresponding station information of the FSP is turned on. Thus, a notification to the effect that the transition from the sleep mode 53 to the normal mode 56 is made to the parties concerned 52 is performed.
[0051]
Further, the party 52 that has received the FSP with the SSP request bit 55 in the corresponding station information described above turned on (ON) shifts to the normal mode 56 thereafter.
[0052]
FIG. 6 is a diagram illustrating an operation example of a sequence of a transition procedure from the sleep mode to the normal mode by the control station.
In the figure, the SSP request bit 64 in the corresponding station information of the FSP is turned on (ON) from the control station 61 to the party 62 that is going to shift from the sleep mode 63 to the normal mode 66. Notify sleep mode release request.
[0053]
The sleep mode application bit 65 is turned off (OFF) in the party in the sleep mode that has received the request for canceling the sleep mode in which the SSP request bit 64 described above is turned on (ON) and shifts to the normal mode 66. By transmitting the SSP, the control station 61 is notified of the transition from the sleep mode 63 to the normal mode 66. Thereafter, the control station 61 shifts to the normal mode 66.
[0054]
FIG. 7 is a diagram showing a change over time in the flow of the operation sequence in the method of transmitting predetermined information at a constant cycle.
In the figure, the part in the standing state indicates that the operation is being performed.
Here, in the communication station in the sleep mode, after the SSP transmission 74 is once performed, the communication station enters a sleep state for the transmission period 71, and after the predetermined transmission period 71 has elapsed, the SSP transmission 76 is repeated again. ing.
[0055]
In this case, before SSP transmission 76, SSP reception 75 from the peripheral communication stations in the network is intermittently performed in the SSP period 72, so that the SSP measurement of the peripheral communication stations is performed. Reports equivalent to mode can be made.
[0056]
The SSP cycle 72 described above is a period corresponding to an integral multiple of the period of one frame 73 in which the SSP transmission 76 is performed.
[0057]
FIG. 8 is a diagram showing the change over time in the flow of the operation sequence in the method of transmitting and receiving predetermined information at a constant cycle.
In the figure, the part in the standing state indicates that the operation is being performed.
Here, in the communication station in the sleep mode, SSP reception 83 is performed from surrounding communication stations in the network for every predetermined transmission cycle 81, and SSP measurement is performed. Thereafter, the communication station enters a sleep state for the period of the transmission cycle 81. In the next transmission cycle, the SSP reception 84 is performed again from the peripheral communication stations in the network in the SSP cycle 82 to perform the SSP measurement, and the SSP measurement result measured last time is sent from the own station to the SSP transmissions 83 and 84. This represents the operation of repeatedly reporting to the control station.
[0058]
FIG. 9 is a diagram showing the change over time in the flow of the operation sequence in the method of performing reception processing in the first period.
In the figure, the part in the standing state indicates that the operation is being performed.
Here, in the communication station in the sleep mode, the FSP reception 92 is performed every period when the station information including the start signal of the local station is transmitted from the control station, and then the first period In the period in which the communication station that has been performing the reception operation for the period 91 enters the sleep state and the station information including the activation signal of the next local station is transmitted from the control station, the FSP reception 93, 94, 95, 96, This indicates that 97 is repeated.
[0059]
FIG. 10 is a diagram showing a change over time in the flow of the operation sequence in the method of performing transmission processing in the second period.
In the figure, the part in the standing state indicates that the operation is being performed.
Here, in the communication station in the sleep mode, the operation of the SSP transmission 102 is performed, and then the communication station that has been transmitting over the second period 101 is set to the sleep state, and then the second period 101 is This indicates that the operation of the SSP transmission 103 is repeated after the elapse.
[0060]
The wireless transmission device serving as the communication station described above performs reception processing in the first cycle shown in FIG. 9 and performs transmission processing in the second cycle shown in FIG.
[0061]
In addition, with respect to the information transmission process performed in the second period shown in FIG. 10, the predetermined information transmission in the constant period shown in FIG. 7 and the predetermined information transmission and reception in the constant period shown in FIG. A processing method combined with a method to be performed may be used.
[0062]
That is, the second transmission cycle 101 shown in FIG. 10 is associated with the transmission cycle 71 shown in FIG. 7, and the SSP transmissions 102 and 103 shown in FIG. 10 are associated with the SSP transmissions 74 and 76 shown in FIG. Good.
[0063]
Further, the second transmission cycle 101 shown in FIG. 10 is made to correspond to the transmission cycle 81 shown in FIG. 8, and the SSP transmissions 102 and 103 shown in FIG. 10 are made to correspond to the SSP transmissions 83 and 84 shown in FIG. Good.
[0064]
FIG. 11 is a diagram illustrating a configuration example of the frame start packet.
This frame start packet is information transmitted from the network control station to all the stations on the network in the downlink management information transmission section (FS) 34 shown in FIG.
[0065]
This packet configuration indicates the disclosure time of this frame: cycle time 111-1, for identifying this network: network ID 111-2, and information contained in this frame start packet (FSP) is updated all at once. The update timer 111-3 indicating the timing until it is performed, the order of information included in the SSP is indicated: the SSP counter 111-4, the SSP transmission cycle is indicated: the SSP cycle 111-5, the number of SSPs present in the frame Indication: SSP number 111-6, current bandwidth reservation information number: slot information number 112-1, frame end position: frame end pointer 112-2, arbitrary number of information: variable length frame information size 112-3, and CRC (Cyclic Redundancy) for error detection By heck) 112-4, are disposed as the information of a fixed length.
[0066]
In addition, the length becomes variable according to the number of SSPs: station information (# 1) 113-1, station information (# 2) 113-2, station information (# 3) 113-3, station information (# 4) 113. -4, and variable length according to the number of slot information: slot information (# 1) 114-1, slot information (# 2) 114-2, and CRC 114-3 for error detection are variable length It is arranged as information.
[0067]
FIG. 12 is a diagram illustrating a configuration example of station information in the frame start packet.
This station information includes a station number 121 for identifying the corresponding station, a station state 122 indicating the operating state of the station used for canceling the sleep mode and shifting to the operation mode, and transmitting a station sync packet. An SSP request 123 for making a request and a portion for future expansion are arranged as a spare 124.
[0068]
FIG. 13 is a diagram illustrating a configuration example of a station sync packet.
This station sync packet is transmitted from the station (communication station) designated by the station information of the CSP (cycle start packet) in the station synchronization information transmission / reception section (SS) 36 shown in FIG. Information transmitted to the station.
[0069]
As the configuration of this packet, the control station is notified of entering the sleep state: sleep mode application 131, specifying the priority of access control right: priority 132, indicating the information processing capability of this station: capability 133, and connection link information with other stations: (# 1) 134, (# 2) 135, (# 3) 136, (# 4) 137, and CRC 138 for error detection Yes.
[0070]
In addition, although this Embodiment mentioned above showed the example applied to the wireless 1394, it cannot be overemphasized that it is applied not only to this but another wireless network.
[0071]
【The invention's effect】
According to the wireless transmission control method of the present invention, by transmitting predetermined information at a constant cycle during the sleep mode, it is easy for other communication stations to remove the communication station in the sleep mode from the network. As a result, it is possible to effectively control information communication.
[0072]
Further, according to the wireless transmission control method of the present invention, during the period when the communication station is operating in the sleep mode, during the intermittent operation, the same information is exchanged as in the normal mode, so that the normal mode can be restored There is an effect that it can be performed in a short time.
[0073]
In addition, according to the wireless transmission control method of the present invention, by setting the first intermittent reception cycle and the second intermittent transmission cycle, each communication station in the sleep mode can set an optimum cycle. There is an effect that it can be performed.
[0074]
Further, according to the wireless transmission control method of the present invention, by performing intermittent reception with a period shorter than the second intermittent transmission period, the sleep mode is canceled for the communication station in the sleep mode in a shorter time. As a result, the normal mode can be activated.
[0075]
Further, according to the wireless transmission control method of the present invention, when a station in the sleep mode wants to shift to the normal mode, control is performed using the station synchronization signal transmission / reception section of its own station existing in the first reception cycle. Since the notification can be made to the station, even if the communication station is in the sleep mode, the normal mode can be restored in a short time.
[0076]
Further, according to the wireless transmission control device of the present invention, by defining the timing for performing the activation process of the communication station in the sleep mode at a predetermined cycle between the control station and the communication station in the dormant state, There is an effect that it is possible to obtain a wireless transmission control device that puts the timing other than that in the sleep state.
[0077]
Further, according to the wireless transmission device of the present invention, the communication station in the dormant state does not need to perform any processing other than the timing at which the activation processing signal is sent from the control station, thereby reducing the power consumption of the communication station. There is an effect that can be.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration example of a wireless network to which a wireless transmission control method of an embodiment is applied.
FIG. 2 is a diagram illustrating a configuration example of a wireless transmission device configuring each communication station.
FIG. 3 is a diagram illustrating a configuration example of a radio transmission frame.
FIG. 4 is a diagram illustrating an example of a sleep mode transition operation.
FIG. 5 is a diagram illustrating an example of sleep mode active release operation;
FIG. 6 is a diagram illustrating an example of a sleep mode passive release operation.
FIG. 7 is a timing chart showing a method for transmitting predetermined information at a constant period.
FIG. 8 is a timing chart showing a method of transmitting and receiving predetermined information at a constant cycle.
FIG. 9 is a timing chart showing a method of performing reception processing in the first period.
FIG. 10 is a timing chart illustrating a method for performing transmission processing in a second cycle.
FIG. 11 is a diagram illustrating a configuration example of a frame start packet.
FIG. 12 is a diagram illustrating a configuration example of station information.
FIG. 13 is a diagram illustrating a configuration example of a station sync packet.
[Explanation of symbols]
11, 12, 13, 14 ... wireless transmission device, 15 ... network, 21 ... antenna, 22 ... wireless transmission / reception processing unit, 23 ... data conversion unit, 24 ... external interface unit, 25 ... control unit 26 ...... Internal memory 27 ... Serial bus 28 ... Connected device 34 ...... Downlink management information transmission section (FS) 36 ... Station synchronization signal transmission / reception section (SS) 41 ... Control station , 42... Party, 43... Normal mode, 44. Sleep mode application bit ON (SSP), 45. SSP request bit OFF (FSP), 46. …… Party, 53 …… Sleep mode, 54 …… Sleep mode application bit OFF (SSP), 55 …… SSP request bit ON (FSP), 56 …… Normal mode, 61 …… Control station, 2 ... Party, 63 ... Sleep mode, 64 ... SSP request bit ON (FSP), 65 ... Sleep mode application bit OFF (SSP), 66 ... Normal mode, 71 ... Transmission cycle, 72 ... ... SSP cycle, 73 ... 1 frame, 74 ... SSP transmission, 75 ... SSP reception, 76 ... SSP transmission, 81 ... transmission cycle, 82 ... SSP cycle, 83 ... SSP reception / transmission, 84 ... ... SSP reception / transmission, 91 ... 1st reception cycle, 92 to 97 ... FSP reception, 101 ... 2nd transmission cycle, 102, 103 ... SSP transmission, 111-1 ... cycle time, 111- 2 ... Network ID, 111-3 ... Update counter, 111-4 ... SSP counter, 111-5 ... SSP cycle, 111-6 ... SSP count, 112-1 ... Slot information Size, 112-2 ... Frame end pointer, 112-3 ... Variable length frame information size, 113-1 ... Station information (# 1), 113-2 ... Station information (# 2), 113-3 ... ... Station information (# 3), 113-4 ... Station information (# 4), 114-1 ... Slot information (# 1), 114-2 ... Slot information (# 2), 121 ... Station number, 122: Station state, 123: SSP request, 124: Reserve, 131: Sleep mode application, 132: Priority, 134: Connection link information (# 1), 135: Connection link information (# 2) 136 ... Connection link information (# 3), 137 ... Connection link information (# 4)

Claims (8)

In a wireless transmission control method for configuring a wireless network using transmission devices as a plurality of communication stations and executing transmission control of the corresponding wireless network,
Provide a predetermined frame period in which a management area for exchanging management information and a data area for exchanging data exist, a sleep period that is an integer multiple of 3 or more of the frame period, and the frame that is shorter than the sleep period by setting 2 or more integer multiples become operational period of the periodic, intends line to exchange information on the operation cycle
No line transmission control method. To manage the above Symbol wireless network, as the information to be transmitted intermittently from the transmitting device as a terminal station, other information terminal stations near that can the terminal station recognizes, the operation keep collect in the period
The wireless transmission control method according to claim 1 . From the top Symbol control station to become the transmission device of a wireless network, performs intermittent information transmitted to the relevant communication station in the sleep mode sets a first period for receiving the above relevant communication station,
A second period for intermittently transmitting information from the corresponding communication station in the sleep mode to the control station is set.
The wireless transmission control method according to claim 1 . In the operation cycle, the start instruction is given to the communication station in the sleep mode.
The wireless transmission control method according to claim 3 . When the above relevant communication station in sleep mode to release the the sleep mode, notifies the sleep mode release relative to the control station in the above SL operation cycle
The wireless transmission control method according to claim 3 . In a wireless transmission control method for configuring a wireless network using transmission devices as a plurality of communication stations and executing transmission control of the corresponding wireless network,
Provide a predetermined frame period,
A first cycle that is an integral multiple of the frame cycle, in which information is intermittently transmitted from the transmission device serving as a control station of the wireless network to the corresponding communication station in the sleep mode and received by the corresponding communication station. A wireless transmission control method comprising: setting and setting a second period that is an integral multiple of the frame period, wherein information is intermittently transmitted from the corresponding communication station in the sleep mode toward the control station . In a wireless transmission control device that is a control station that configures a wireless network using transmission devices that are a plurality of communication stations, and performs transmission control based on management information related to transmission control of the corresponding wireless network,
Means for setting a frame period in a predetermined period;
A sleep mode cycle setting means for setting a sleep cycle that is an integer multiple of 3 or more of the frame cycle and an operation cycle that is an integer multiple of 2 or more of the frame cycle shorter than the sleep cycle;
Receiving means for receiving a sleep mode request from the communication station constituting the wireless network in the operation cycle ;
A transmission means for transmitting a sleep mode release request of a corresponding communication station at a predetermined cycle in the operation cycle .
No line transmission control device. In a wireless transmission device that is a communication station that configures a wireless network using transmission devices that are a plurality of communication stations and transmits or receives management information related to transmission control of the corresponding wireless network,
Means for setting a frame period in a predetermined period based on control information from a predetermined control station;
A sleep mode cycle setting means for setting a sleep cycle that is an integer multiple of 3 or more of the frame cycle and an operation cycle that is an integer multiple of 2 or more of the frame cycle shorter than the sleep cycle;
A first transmission means for transmitting a sleep mode request to the transmission device serving as a control station of the wireless network in the operation cycle ;
A second transmitting means for transmitting a sleep mode cancellation request to the control station when the local station wants to transmit information;
The sleep mode release request from the control station at a predetermined period, and a receiving means for receiving the above-described operation cycle
No line transmission equipment.

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