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WO2014087553A1 - Dispositif de communication, procédé et programme de commande de communication - Google Patents

Dispositif de communication, procédé et programme de commande de communication Download PDF

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Publication number
WO2014087553A1
WO2014087553A1 PCT/JP2013/004443 JP2013004443W WO2014087553A1 WO 2014087553 A1 WO2014087553 A1 WO 2014087553A1 JP 2013004443 W JP2013004443 W JP 2013004443W WO 2014087553 A1 WO2014087553 A1 WO 2014087553A1
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Prior art keywords
communication
state
unit
lte
cdrx
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Ceased
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PCT/JP2013/004443
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English (en)
Japanese (ja)
Inventor
高志 唯木
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NEC Casio Mobile Communications Ltd
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NEC Casio Mobile Communications Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a communication device, a communication control method, and a program.
  • LTE Long Term Evolution
  • NW Network
  • the communication apparatus can intermittently monitor the downlink channel. For this reason, it is generally possible to keep current consumption low.
  • the communication apparatus in order to secure the uplink / downlink communication channel, the communication apparatus needs to always monitor the downlink communication channel. For this reason, the power consumption of a communication apparatus becomes large compared with an idle state.
  • the communication device in order to reduce the power consumption in a communication apparatus using LTE, it is desirable to release the RRC connection in a shorter time and transition to the idle state when there is no data to be transmitted / received.
  • the communication device when there is no packet communication data for a certain period of time, the communication device voluntarily notifies the NW of the timing for releasing the signaling connection and can effectively save power (signaling A function such as FastDormancy for requesting a transition to an RRC connection in response to a connection release trigger is requested.
  • CDRX Connected DRX
  • RRC connection parameters such as a timer until transition and an intermittent period are defined in 3GPP (Third Generation Partnership Project). These parameters are notified from the NW to the communication device by a message such as RRC Connection Reconfiguration during LTE communication.
  • RRC Connection Reconfiguration When there is no uplink / downlink communication with the NW, the communication device transitions to the CDRX state according to the parameter.
  • uplink or downlink communication occurs in the CDRX state, the communication state (non-intermittent operation) before the CDRX state transition is restored.
  • the drx-InactivityTimer is the CDRX after the elapse of the drx-InactivityTimer from the time when communication data (including not only the packet communication data but also the Control-Plane (hereinafter referred to as C-Plane) data, etc.) disappears. It is a timer that performs the operation. For this reason, the shorter the drx-InactivityTimer is set, the easier it is to transition to the CDRX state.
  • the onDurationTimer is a timer for designating the time (ON duration) that the communication apparatus is activated for each CDRX cycle for incoming call confirmation (PDCCH confirmation). For this reason, the time during which the communication apparatus sleeps for each CDRX cycle is the difference between them ((short (long) DRX-cycle) -onDurationTimer).
  • the extent to which the above-mentioned C-Plane data and lower layer signals are received depends on the state of the LTE cell and the communication device in the area (for example, accommodated in the same cell). For example, whether the uplink channel power adjustment of the communication apparatus is necessary). For this reason, there is a circumstance that the extent to which the communication device is actually in the CDRX state is different for each LTE cell from this viewpoint.
  • LTE does not have a mechanism for promoting a transition to a state in which current consumption is lower than that of a communication device, focusing on the presence or absence of packet communication data, such as the Fast Dormancy function of W-CDMA.
  • the transition to the CDRX state with low power consumption or the idle state depends on the NW, and there is a circumstance that the degree of transition is different for each LTE cell.
  • the communication device can maintain a communication state that consumes a large amount of current for a long time even when there is no packet communication data.
  • power consumption cannot be effectively reduced because it must be maintained. Therefore, various techniques for reducing power consumption have been proposed for communication devices in accordance with the amount of data, the communication state, and the like.
  • Patent Document 1 a mobile terminal device such as a smartphone is calculated by calculating a data usage amount for each application, and selectively connecting and blocking data communication according to the data usage amount for each application. Technologies that reduce battery consumption have been proposed.
  • Patent Document 2 relates to a mobile phone terminal capable of receiving terrestrial digital broadcasts, and reduces the power consumption by controlling the digital broadcast reception operation according to the reception status of the digital broadcast in the background. Technology has been proposed.
  • Patent Document 3 in order to prevent a ping-pong phenomenon between cells and between TAs (Tracking Areas), cell selection / reselection parameters for user communication devices are adjusted in the active state using history information of the serving cell. Techniques to do this have been proposed.
  • Patent Documents 1 and 2 described above are not related to communication control by LTE, but are technologies related to connection and blocking of 3G connection and WiFi connection, or technologies related to reception of digital broadcasts. No such issues are taken into account. For this reason, the techniques according to Patent Documents 1 and 2 described above are not directly applicable to communication apparatuses using LTE, and there is a problem that it is difficult to reduce power consumption in communication apparatuses using LTE.
  • an object of the present invention is to provide a communication device, a communication control method, and a program that can avoid the influence due to the difference in the communication environment and can efficiently reduce the power consumption.
  • the communication device of the present invention includes a communication unit that performs communication using LTE, a communication recording unit that records a communication state of each base station by the communication unit as history information, and history information recorded by the communication recording unit.
  • a determination unit that determines whether or not communication by the communication unit is possible for each base station, and a control unit that controls communication operation by the communication unit based on a determination result of whether or not communication is possible by the determination unit. This is a featured communication device.
  • the communication control method of the present invention is based on a communication step of performing communication using LTE, a communication recording step of recording a communication state using LTE for each base station as history information, and the recorded history information.
  • a determination step for determining whether communication using the LTE is possible for each base station, and a control step for controlling a communication operation using the LTE based on the determination result of the communication permission This is a communication control method.
  • the program of the present invention is based on a communication function for performing communication using LTE on a computer, a communication recording function for recording a communication state using LTE for each base station as history information, and the recorded history information.
  • a determination function for determining whether or not communication using the LTE is performed for each base station, and a control function for controlling a communication operation using the LTE based on the determination result of the communication permission or not. is there.
  • the present invention efficiently reduces power consumption by suppressing background communication that the user is not aware of according to the state of the LTE cell in which the packet is transmitted in an LTE-compatible communication device. It is characterized by. Therefore, in the present invention, when packet communication is performed in an LTE cell in an LTE-compatible communication device, the CDRX state and the ease of transition to an idle state are recorded as history information for each LTE cell, and LTE is performed. The power consumption is reduced by controlling the operation of the background communication based on the recorded history information at the timing when the background communication occurs in the cell.
  • T_rel is defined as the time from when there is no packet communication data until the RRC connection / release is received from the NW and the state transits to the idle state.
  • T_rel is an index indicating the ease of transition of the serving LTE cell to the idle state. If T_rel is short, even if packet communication data is generated once, it is possible to shift to the idle state soon after the packet communication ends. For this reason, when performing the same packet communication, the power saving efficiency is higher when the packet communication is performed in the LTE cell having a shorter T_rel.
  • the rate at which intermittent operation is actually performed in a section where there is no packet communication data in the CDRX state is defined as R_cdrx.
  • R_cdrx is an index indicating the degree of ease of transition of the serving LTE cell to the CDRX state. Even if the LTE cell has a long T_rel, if the LTE cell has a high R_cdrx, the LTE cell is likely to make a transition to a lower power consumption state. Therefore, the power saving efficiency is higher than that of the LTE cell having a low R_cdrx.
  • FIG. 1 is a block diagram showing a configuration of a communication apparatus 100 according to an embodiment of the present invention.
  • the communication device 100 is an LTE-compatible mobile phone terminal, a smartphone, or the like.
  • the communication apparatus 100 includes an application unit 101, a control unit 102, and a wireless unit 107.
  • the application unit 101 determines whether or not packet communication data is generated by the user operating various applications, that is, whether or not foreground communication data is generated according to the user's intention.
  • the control unit 102 includes a communication recording unit 103, a data storage unit 104, a communication determination processing unit 105, and a communication control unit 106.
  • the communication recording unit 103 measures and records values of R_cdrx and T_rel.
  • the communication recording unit 103 stores information on the actual intermittent time (sleep operation time) in the CDRX notified from the communication control unit 106 and the RRC connection from the NW when packet communication is not performed in the LTE cell. -The R_cdrx and T_rel values are classified and recorded for each LTE cell in association with the release timing information of the release (RRC Connection Release).
  • the data storage unit 104 stores R_cdrx and T_rel notified from the communication recording unit 103 for each LTE cell.
  • the data storage unit 104 also stores reserved background communication data.
  • the communication recording unit 103 and the data storage unit 104 may be a rewritable nonvolatile memory such as a flash memory.
  • the communication determination processing unit 105 determines whether the packet communication data is foreground communication or background communication, and whether the serving LTE cell is communicable, and determines whether or not the packet communication can be performed. When the communication determination processing unit 105 determines that the background communication is on hold, the communication determination processing unit 105 stores the background communication data in the data storage unit 104 and notifies the application unit 101 that the background communication is on hold. The communication determination processing unit 105 also determines whether or not batch transmission of the suspended background communication data is possible. The communication control unit 106 controls overall communication including packet communication. The wireless unit 107 performs wireless communication with the NW.
  • the communication apparatus 100 determines whether the packet communication data is foreground communication data or background communication data. If the packet communication data is foreground communication data, the communication apparatus 100 performs packet communication. In the case of background communication data, the following communication determination (A2) is performed.
  • the communication device 100 determines whether or not the currently located cell is an LTE cell. In the case of a cell other than LTE, packet communication is started. On the other hand, when the serving cell is an LTE cell, the history information is compared with a predetermined threshold value using the history information of the LTE cell stored in the memory in the operations (A4) to (A8) described later. To determine whether communication is possible. When it is determined that the serving LTE cell is communicable, background communication is performed. When communication is not possible, the background communication data is suspended. In addition, when there is no history information of the serving LTE cell, packet communication is always performed.
  • the held background communication data is held at the time of packet communication by the foreground communication data or until the in-zone cell is changed, and when packet communication becomes possible for any reason, Sent.
  • the communication device 100 can establish an RRC connection with the NW when packet communication occurs due to a user operation or an incoming call in the LTE cell. To establish LTE communication.
  • the communication apparatus 100 regards the packet non-communication state, R_cdrx that is the CDRRX operation rate in the non-communication state, and T_rel that is the time from the last packet communication to the RRC connection / release reception. Start measuring.
  • the communication apparatus 100 stops measuring R_cdrx and T_rel, and stores the R_cdrx measurement result in the communication apparatus 100. Store in the provided memory. When storing, if there is a measurement history in the LTE cell in the past, the average value of the past measurement result and the new measurement result already stored is stored. In this case, the measurement result of T_rel is not stored in the memory. Thereafter, the process returns to (A5).
  • the communication apparatus 100 stops measuring R_cdrx and T_rel, and stores the measurement results of R_cdrx and T_rel in a memory provided in the communication apparatus 100. .
  • the communication apparatus 100 stores, if there is a measurement history in the LTE cell in the past, the average value of the past measurement result and the new measurement result already stored is stored.
  • FIG. 2 is a flowchart for explaining a background communication processing method performed by the communication apparatus 100 according to the present embodiment.
  • the application unit 101 determines whether there is packet communication data (step S10). If there is bucket communication data (YES in step S10), the application unit 101 determines whether the data is foreground communication or background communication. Is determined (step S12), and the communication type information of the packet communication data is provided to the communication determination processing unit 105 together with the packet communication data itself (step S14).
  • the communication determination processing unit 105 determines whether or not the packet communication data is provided from the application unit 101 (step S20). When the packet communication data is provided from the application unit 101 (YES in step S20). ), RAT determination is executed based on the current RAT (Radio Access Technology) information 106a notified from the communication control unit 106 (step S22).
  • RAT Radio Access Technology
  • the communication determination processing unit 105 first determines whether or not the current RAT is LTE (step S22). If the current RAT is other than LTE (NO in step S22), the communication determination processing unit 105 transmits the provided packet communication data to the communication control unit regardless of the communication type of the provided packet communication data. It transmits to 106 (step S30). At this time, it is determined whether or not there is packet communication data (background) pending in the data storage unit 104 (step S32).
  • step S32 when there is packet communication data (background) on hold in the data storage unit 104 (YES in step S32), the reserved packet communication data (background) 104b is acquired from the data storage unit 104 to perform communication.
  • the data is transmitted to the control unit 106 (step S34), and the application unit 101 is notified that the pending packet communication data (background) 104b has been transmitted (transmission completion notification) (step S36). Thereafter, the process is completed (step S38).
  • step S38 if there is no pending packet communication data (background) in the data storage unit 104 (NO in step S32), the process is completed (step S38).
  • the communication determination processing unit 105 determines that the communication type is the back as the communication type determination of the provided packet communication data. It is determined whether the data is ground communication data (step S24).
  • step S4 Communication type determination (B4-1) Then, in the communication type determination, when it is determined that the communication type is foreground communication data (NO in step S24), the communication determination processing unit 105 performs the above steps. In step S30, the provided packet communication data is transmitted to the communication control unit 106. Thereafter, in the handling of the reserved background communication data, steps S32 to S38 are executed in the same manner as (3-1) described above.
  • the communication determination processing unit 105 is notified from the communication control unit 106. Based on the serving cell information 106b, the history information 104a of the serving cell is acquired from the data storage unit 104, and it is determined whether or not T_rel, which is the history information 104a, is larger than the threshold T_th as communication feasibility determination (step S26). ).
  • step S4 On the other hand, when it is determined in the communication availability determination that R_cdrx, which is history information, is smaller than the threshold value R_th (YES in step S28), the communication determination processing unit 105 determines that communication is not possible, and the packet The communication data is suspended and transmitted to the data storage unit 104 (step S40). The packet communication data is stored in the data storage unit 104 as pending packet communication data 104b. Further, the communication determination processing unit 105 notifies the application unit 101 that the provided packet communication data has been suspended (step S42).
  • the communication determination processing unit 105 checks whether or not the background communication data 104b is held at the timing of receiving the RAT information 106a and the cell information 106b from the communication control unit 106, and holds the back If there is the ground communication data 104b, the background communication data is regarded as the packet communication data provided from the application unit 101, and the processes (B3) to (B5) described above are performed.
  • FIG. 3 is a flowchart for explaining a method of recording the ease of transition (R_cdrx) to the CDRX state of the LTE cell located by the communication apparatus 100 according to the present embodiment.
  • the communication control unit 106 determines whether or not there is packet communication data (step S40). If there is packet communication data, that is, when various communication states are changed (YES in step S40). ), The communication status information is notified to the communication recording unit 103 (step S40).
  • the communication state information includes transition of idle / connection state, reconnection in connection state, cell movement by handover, presence / absence of packet communication data, and the like. Further, the communication control unit 106 determines whether or not the device is in the CDRX state (step S44). If the communication control unit 106 is in the CDRX state (YES in step S44), the communication control unit 106 actually sleeps in the CDRX state in addition to the communication state information. The start time when the state is started and the stop time when the sleep state is stopped are notified to the communication recording unit 103 as CDRX information (step S46).
  • the communication recording unit 103 determines whether or not the current communication state is a connection state in the LTE cell based on the communication state information notified from the communication control unit 106 (step S50).
  • the communication state is a connection state in the LTE cell (YES in step S50)
  • the presence / absence of packet communication data is confirmed (step S52). If there is no packet communication data (YES in step S52), recording of R_cdrx is started (step S54), the CDRX information notified from the communication control unit 106 is monitored, and whether or not the communication state has changed. Is determined (step S56).
  • the communication recording unit 103 calculates and records R_cdrx indicating the rate of actual CDRX operation (sleep) during no packet communication.
  • the information to be notified to the data storage unit 104 is R_cdrx after calculation and cell ID information.
  • the data storage unit 104 may be notified of the sleep time and the no-communication time as R_cdrx.
  • the data storage unit 104 collates the LTE cell information notified from the communication recording unit 103 with the past history information 104a (see FIG. 2) stored therein, and whether there is history information of the same cell. Is determined (step S70). If there is history information of the same cell (YES in step S70), the data storage unit 104 calculates an average R_cdrx from the past R_cdrx and the currently recorded R_cdrx (step S72), and stores the stored R_cdrx. The history information is updated (step S74). On the other hand, if there is no history information of the same cell (NO in step S70), the R_cdrx recorded this time is stored as it is as history information (step S74).
  • the average value of R_cdrx when the LTE cell information notified from the communication recording unit 103 is in the history information stored in the data storage unit 104 is, for example, w (0 ⁇ w ⁇ 1) as follows: In the present invention, the averaging method is not particularly defined.
  • R_cdrx (average value) R_cdrx (current data) + W ⁇ (R_cdrx (history data up to the previous time) ⁇ R_cdrx (current data))
  • FIG. 4 is a flowchart for explaining a method for recording the ease of transition (T_rel) of the LTE cell in the idle state to the idle state by the communication apparatus 100 according to the present embodiment.
  • 3 is almost the same as the recording method of R_cdrx shown in FIG. 3, but in the case of T_rel, the condition for notifying the data storage unit 104 is that the condition is only the transition to the idle state due to the reception of the RRC connection / release from the NW. Different.
  • a recording method of T_rel will be described.
  • the communication control unit 106 determines whether or not the communication state has changed (step S82), and notifies the communication recording unit 103 of the communication state information when the communication state is changed for some reason.
  • the communication state information includes transition of idle state / connection state, reconnection in communication state, cell movement due to handover, presence / absence of packet communication data, and the like.
  • the communication recording unit 103 determines whether the current communication state is a connection state in the LTE cell based on the communication state information (step S90). If the current communication state is a connection state in the LTE cell (YES in step S90), the communication recording unit 103 determines whether or not there is no packet communication data communication state (step S92). . If there is no packet communication data (YES in step S92), recording of T_rel is started (step S94).
  • step S96 The communication recording unit 103 determines whether or not there has been a transition in the communication state based on the communication state information notified from the communication control unit 106 in step S80 of (D1) (step S96). If there is no transition in the communication state (NO in step S96), the recording of T_rel is continued. On the other hand, when there is a transition in the communication state (YES in step S96), the communication recording unit 103 stops recording T_rel (step S98).
  • step S100 the communication recording unit 103 determines whether or not the communication state transition in step S96 of (D3) is a transition to the idle state due to RRC connection / release reception (step S100).
  • the communication state transition is a transition to the idle state by RRC connection / release reception (YES in step S100)
  • the communication recording unit 103 uses the recorded T_rel and LTE cell information (cell ID, etc.) as data.
  • the storage unit 104 is notified (step S104).
  • the communication state transition is other than the transition to the idle state due to RRC connection / release reception, that is, when packet communication is resumed by packet communication data, reconnection by communication disconnection, cell movement by handover, etc. (NO in step S100)
  • the communication recording unit 103 discards the recorded T_rel (step S102) and notifies the data storage unit 104 of nothing.
  • the data storage unit 104 collates the LTE cell information notified from the communication recording unit 103 with the past history information 104a (see FIG. 2) stored therein, and whether there is history information of the same cell. Is determined (step S110). If there is history information of the same cell (YES in step S110), the data storage unit 104 calculates an average T_rel from the past T_rel and the currently recorded T_rel (step S112), and stores the stored T_rel. The history information is updated (step S114). On the other hand, when there is no history information of the same cell (NO in step S110), the T_rel recorded this time is stored as history information as it is (step S114).
  • the average value of T_rel when the LTE cell information notified from the communication recording unit 103 is in the history information stored in the data storage unit 104 is, for example, w (0) as follows, similarly to R_cdrx: Although it is calculated by weighting such that ⁇ w ⁇ 1), the present invention does not particularly define an averaging method.
  • T_rel (average value) T_rel (current data) + W ⁇ (T_rel (history data up to the previous time) ⁇ T_rel (current data))
  • the ease of transition to the CDRX state and the idle state varies depending on the LTE cell depending on the 3GPP-specified parameters and the state of the communication device 100 in the cell.
  • the CDRX state and the ease of transition to the idle state (T_rel, R_cdrx) are recorded, and background communication is controlled using the history information. By doing so, power consumption can be reduced efficiently
  • the ratio of actually performing intermittent operation in the CDRX state is affected by data other than packet communication data
  • the ratio of actually operating (R_cdrx) is used instead of the 3GPP standard parameters. Power consumption can be efficiently reduced according to the user's activity area.
  • the W-CDMA area When the user's activity range is mainly the W-CDMA area, the W-CDMA area prompts a transition to an idle state with low power consumption spontaneously from a communication device such as a mobile phone, as in the Fast Dormancy function. There is a mechanism. For this reason, even if packet communication occurs, power consumption other than the minimum necessary amount for transmitting the packet communication data can be suppressed. In such a case, packet communication is performed in the LTE cell that is difficult to transition to the idle state, and after the packet communication data is lost, the packet is transmitted in the W-CDMA cell rather than maintaining the connection state in which the power consumption is large. Communication is more likely to reduce power consumption, and a power saving effect can be expected.
  • the present embodiment it is possible to transmit the suspended packet communication data at a time when RAT switching, cell movement, and foreground communication occur, and these packet communication data are generated individually. Compared to the case, the number of RRC connection establishment and release times can be reduced, and the amount of signaling transmission / reception required for the processing is eliminated, so that the power consumption can be reduced by that amount.
  • the communication availability determination is performed using a combination of T_rel and R_cdrx.
  • the communication availability determination of the serving LTE cell is performed using only one of T_rel and R_cdrx. You may go.
  • R_cdrx which is the ratio of the time actually in the sleep state when there is no packet communication, is used as the index of the ease of transition to the CDRX state.
  • R_cdrx it is also possible to determine whether or not communication is possible for the serving LTE cell by using CDRX parameters (such as drx-InactivityTimer, onDurationTimer, short (long) DRX-cycle, etc.) notified from the NW.
  • the communication is limited to the background communication.
  • the packet communication data to which the communication feasibility determination is applied is expanded to the foreground communication data, the packet communication data designated in advance by the user, or the like. Also good.
  • the communication device is not limited to a mobile phone / smartphone, but other devices (LTE data communication cards, PCs incorporating LTE data communication card functions (tablet PCs, notebook PCs), wireless routers, and the like) Etc.).
  • LTE data communication cards PCs incorporating LTE data communication card functions (tablet PCs, notebook PCs), wireless routers, and the like) Etc.).
  • FIG. 5 is a configuration diagram of Supplementary Note 1. The correspondence between FIG. 5 and FIG. 1 will be described.
  • a communication unit 200 illustrated in FIG. 5 corresponds to the wireless unit 107 in FIG. 1
  • a communication recording unit 201 in FIG. 5 corresponds to the communication recording unit 103 in FIG. 5 corresponds to the communication determination processing unit 105 in FIG. 1
  • the control unit 203 in FIG. 5 corresponds to the communication control unit 106 in FIG.
  • the invention described in Appendix 1 is A communication unit 200 that performs communication using LTE;
  • a communication recording unit 201 for recording the communication state of each base station by the communication unit 200 as history information;
  • a determination unit 202 Based on the history information recorded by the communication recording unit 201, a determination unit 202 that determines whether communication by the communication unit 200 is possible for each base station;
  • the communication apparatus includes: a control unit 203 that controls a communication operation by the communication unit 200 based on a determination result of the communication unit 200 by the determination unit 202.
  • the determination unit determines whether or not communication by the communication unit in the visited area is possible based on history information recorded by the communication recording unit at a timing when background communication occurs in the visited area,
  • the control unit is the communication apparatus according to appendix 1, wherein the background communication is controlled based on a determination result by the determination unit.
  • the control unit performs the background communication when it is determined by the determination unit that communication in the area is possible, and when it is determined that communication is not possible, The communication apparatus according to appendix 2, wherein the background communication data is reserved.
  • the control unit when it is determined that communication is impossible, the data of the background communication that has been suspended, at the time of packet communication by foreground communication, or when the area is changed and packet communication becomes possible, The communication apparatus according to attachment 3, wherein transmission is performed in a lump.
  • the communication recording unit records the ease of transition to the CDRX state and the ease of transition to the idle state for each base station as the history information. Is a communication device.
  • the communication recording unit records a CDRX operation rate indicating a rate at which intermittent operation is actually performed in a section where there is no packet communication data in the CDRX state, as the ease of transition to the CDRX state, and enters the idle state.
  • the communication device according to appendix 5 or 6, wherein the time from when the packet communication data is lost until the transition to the idle state is received after the packet communication data is lost is recorded.
  • a communication step for performing communication using LTE a communication recording step for recording a communication state using LTE for each base station as history information, and whether communication using LTE is possible based on the recorded history information
  • a control step for controlling a communication operation using the LTE based on the determination result of the availability of communication.
  • a communication function for performing communication using LTE in a computer, a communication recording function for recording a communication state using LTE for each base station as history information, and communication using LTE based on the recorded history information A program for executing a control function for controlling a communication operation using the LTE based on a determination function for determining whether or not communication is possible for each base station and a determination result of the communication availability.

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  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

[Problème] Prévenir l'influence des différences dans les environnements de communication tout en réduisant efficacement la consommation d'énergie. [Solution] Un dispositif de communication est équipé : d'une unité de communication (200) qui effectue des communications au moyen de la LTE ; une unité d'enregistrement de communication (201) qui enregistre l'état de communication de l'unité de communication (200) avec chaque station de base sous la forme d'informations d'historique ; une unité de détermination (202) qui détermine si l'unité de communication (200) peut ou non communiquer avec chacune des stations de base d'après les informations d'historique enregistrées par l'unité d'enregistrement de communication (201) ; et une unité de commande (203) qui commande les opérations de communication effectuées par l'unité de communication (200) d'après le résultat de la détermination de la possibilité de communication obtenu par l'unité de détermination (202).
PCT/JP2013/004443 2012-12-06 2013-07-22 Dispositif de communication, procédé et programme de commande de communication Ceased WO2014087553A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012267067 2012-12-06
JP2012-267067 2012-12-06

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JP2014183402A (ja) * 2013-03-18 2014-09-29 Fujitsu Ltd 通信装置及び通信方法
CN110945919A (zh) * 2017-08-09 2020-03-31 欧姆龙健康医疗事业株式会社 信息处理装置、接收方法和程序

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JP2004120080A (ja) * 2002-09-24 2004-04-15 Nippon Soken Inc 移動局
JP2010245888A (ja) * 2009-04-07 2010-10-28 Ntt Docomo Inc ユーザ端末及び基地局、並びに方法

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JP2004120080A (ja) * 2002-09-24 2004-04-15 Nippon Soken Inc 移動局
JP2010245888A (ja) * 2009-04-07 2010-10-28 Ntt Docomo Inc ユーザ端末及び基地局、並びに方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014183402A (ja) * 2013-03-18 2014-09-29 Fujitsu Ltd 通信装置及び通信方法
CN110945919A (zh) * 2017-08-09 2020-03-31 欧姆龙健康医疗事业株式会社 信息处理装置、接收方法和程序
CN110945919B (zh) * 2017-08-09 2023-02-17 欧姆龙健康医疗事业株式会社 信息处理装置、接收方法和存储介质

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