Mobile station

Abstract

DEPCT64 There are concerns that communication failures may occur if the service cell is not in service. Properly managed during SPS or GF mobile station communications. It consists of at least two base stations and two mobile stations that are configured to operate. Communication uses carrier wave aggregation, which utilizes cells that serve multiple cells simultaneously in a configured layout. In one aspect of this invention, the base station, where the mobile station begins to operate, is the receiver. The deactivation time of a cell that serves multiple cells is indicated by the uptime permission. A configuration that is designed for service cells. -----------------------------------------------------------

Description

mobile station equipment

[0001] One aspect of the present invention relates to a mobile station device. This application claims priority based on Japanese Patent Application No. 2018-20101, filed in Japan on February 7, 2018, the contents of which are incorporated herein by reference.

[0002] Traditionally, the 3GPP (3rd Generation Partnership Project) has standardized the specifications for Evolved Universal Terrestrial Radio Access (also known as "EUTRA" or "LTE"), an evolution of the third-generation mobile communication system, and its further development, Advanced EUTRA (also known as "LTE-Advanced" or "LTE-A"), the fourth-generation mobile communication system. Commercialization of mobile communications using these systems is underway in various countries (Non-Patent Literature 1). In recent years, 3GPP has also been working on the study and standardization of fifth-generation mobile communication systems (Non-Patent Literature 2).

[0003] One scheduling (communication resource allocation) technology is semi-persistent scheduling (SPS), which is a method for periodically allocating communication resources. Unlike dynamic scheduling, which allocates communication resources for each subframe using signaling called uplink grant or downlink assignment, SPS allocates communication resources using predetermined settings (time interval, modulation scheme, start timing, number of repetitions, etc.), thereby eliminating uplink grant and downlink assignment and enabling efficient communication by reducing the overhead caused by control signals. SPS has been adopted in conventional LTE and LTE-Advanced and has been used for communications requiring real-time performance, such as voice services. Further advancements in SPS are being considered and standardized for fifth-generation mobile communication systems. Furthermore, progress is being made in studying and standardizing uplink grant-free (GF) communication methods, which utilize uplink SPS to enable uplink data transmission from a mobile station to a base station even without an uplink grant allocated from the base station to the mobile station.

[0004] "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 14)" 3GPP TS 36.300 V14.3.0 (2017-06) "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; NR and NG-RAN Overall Description; Stage 2 (Release 15)" 3GPP TS 38.300 V2.0.0 (2017-12)

[0005] During the communication of SPS or GF, if the state of the serving cell is not properly managed, there are concerns such as communication abnormalities occurring.

[0006] One aspect of the present invention has been made in view of such circumstances, and its object is to provide a mobile station device that can appropriately manage the state of the serving cell and perform normal communication even during the communication of SPS or GF.

[0007] (1) One aspect of this invention has been made to solve the above-described problems, and is a mobile station device of a communication system including at least a base station device according to one aspect of the present invention and a mobile station device that communicates by carrier aggregation using a plurality of serving cells set from the base station device, and restarts the deactivation timer of the serving cell at the timing indicated by the configured uplink grant set for the serving cell.

[0008] (2) Furthermore, a mobile station device according to one aspect of the present invention is the above-described mobile station device, wherein when uplink data is transmitted at the timing indicated by the configured uplink grant set in the serving cell, the deactivation timer of the serving cell is restarted.

[0009] (3) A mobile station device of a communication system comprising at least a base station device according to one aspect of the present invention and a mobile station device that communicates by carrier aggregation using a plurality of serving cells set by the base station device, wherein the mobile station device stops the deactivation timer of the serving cell when a configured uplink grant is set on the serving cell, and restarts the deactivation timer of the serving cell when the configured uplink grant is released.

[0010] (4) Furthermore, a mobile station device according to one aspect of the present invention is the above-described mobile station device, which stops the deactivation timer of the serving cell when it receives a downlink control signal from the base station device for activating the configured uplink grant.

[0011] (5) Furthermore, a mobile station device according to one aspect of the present invention is the above-described mobile station device, which activates the deactivation timer of the serving cell when it receives a downlink control signal from the base station device to deactivate the configured uplink grant.

[0012] (6) A mobile station device of a communication system comprising at least a base station device according to one aspect of the present invention and a mobile station device that communicates by carrier aggregation using a plurality of serving cells set up from the base station device, wherein the deactivation timer of the serving cell is restarted at the timing indicated by the configured downlink assignment set up for the serving cell.

[0013] (7) Furthermore, a mobile station device according to one aspect of the present invention is the above-described mobile station device, wherein when downlink data is received at the timing indicated by the configured downlink assignment set in the serving cell, the deactivation timer of the serving cell is restarted.

[0014] (8) A mobile station device of a communication system comprising at least a base station device according to one aspect of the present invention and a mobile station device that communicates by carrier aggregation using a plurality of serving cells set by the base station device, wherein the mobile station device stops the deactivation timer of the serving cell when a configured downlink assignment is set to the serving cell, and starts the deactivation timer of the serving cell when the configured downlink assignment is released.

[0015] According to one aspect of this invention, the state of the serving cell can be appropriately managed and communication can be performed normally even during SPS or GF communication.

[0016] This figure shows an example of the configuration of a MAC entity within a mobile station device in one aspect of the present invention. This figure shows an example of the message and data transmission / reception flow between the base station device and the mobile station device at each time interval and a method for managing the sCell deactivation timer when applied to UL-SPS in one aspect of the present invention. This figure shows an example of the message and data transmission / reception flow between the base station device and the mobile station device at each time interval and a method for managing the sCell deactivation timer when applied to UL-SPS in one aspect of the present invention. This figure shows an example of the message and data transmission / reception flow between the base station device and the mobile station device and a method for managing the sCell deactivation timer when applied to GF in one aspect of the present invention. This figure shows an example of the message and data transmission / reception flow between the base station device and the mobile station device and a method for managing the sCell deactivation timer when applied to GF in one aspect of the present invention. This figure shows an example of the message and data transmission / reception flow between the base station device and the mobile station device and a method for managing the sCell deactivation timer when the sCell deactivation timer is stopped during UL-SPS communication in one aspect of the present invention. This figure shows an example of the message and data transmission / reception flow between the base station device and the mobile station device, and a method for managing the sCell deactivation timer, when the sCell deactivation timer is stopped during GF communication, according to one aspect of the present invention. This figure shows an example of the message and data transmission / reception flow between the base station device and the mobile station device, and a method for managing the sCell deactivation timer, when applied to DL-SPS, according to one aspect of the present invention. This figure shows an example of the message and data transmission / reception flow between the base station device and the mobile station device, and a method for managing the sCell deactivation timer, when applied to DL-SPS, according to one aspect of the present invention. This figure shows an example of the message and data transmission / reception flow between the base station device and the mobile station device, and a method for managing the sCell deactivation timer, when the sCell deactivation timer is stopped during DL-SPS communication, according to one aspect of the present invention.

[0017] (First Embodiment) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. Figure 1 is an example of the configuration of a MAC entity in a mobile station device in this embodiment. In Figure 1, 101 is a control unit that controls all components. 102 is an upper layer interface unit that sets up and manages logical channels with upper layers such as PDCP, RLC, and RRC, and transmits and receives uplink data and downlink data through these logical channels. 103 is an uplink PDU (Protocol Data Unit) component that adds a header to the uplink transmission data from the upper layer received through the logical channel, combines data from multiple logical channels, and configures an uplink PDU. 104 is a transmission processing unit that performs error correction coding and modulation processing on the uplink PDU created by the uplink PDU component 103, and maps it to the uplink physical resources instructed by the uplink resource management unit 106. 105 is the Serving Cell Status Management Unit, which manages the status of all serving cells assigned to the mobile station equipment. The Uplink Resource Management Unit 106 manages the uplink physical resources assigned by the base station equipment and controls the mapping between the uplink PDU and the uplink physical resources. The Receiving Processing Unit 107 demodulates the received signal from the Radio Interface Unit 109 and decodes the error correction code to reconstruct the downlink PDU. The Downlink PDU Separation Unit 108 separates the downlink PDU received from the Receiving Processing Unit 107 into one or more data sets, sending user data and control data to the upper layer via the Upper Layer Interface Unit 102, and sending CE (Control Element) data to the Control Unit 101. 110 is the Downlink Resource Management Unit, which manages the downlink physical resources assigned by the base station equipment. The Radio Interface Unit 109 transmits and receives radio signals with the base station equipment.

[0018] While uplink grants using dynamic scheduling are referred to as dynamic grants, uplink grants for SPS and GF on the uplink are referred to as configured grants or configured uplink grants, as they allocate communication resources according to predetermined settings. Similarly, downlink SPS grants are referred to as configured assignments or configured downlink assignments. In the specification standardization of the 5th generation mobile communication system of 3GPP, the uplink SPS, GF, and downlink SPS are collectively referred to as "Transmission / Reception without dynamic scheduling," and the downlink SPS is referred to as "DL-SPS," while the GF and uplink SPS are referred to as "configured grant Type 1" and "configured grant Type 2," respectively. For convenience, in the following explanation, "configured grant Type 1" will be referred to as GF, "configured grant Type 2" as UL-SPS, and the downlink SPS as DL-SPS.

[0019] In LTE and LTE-A, UL-SPS and DL-SPS settings were only permitted on primary cells (PCell) and primary secondary cells (PSCell), which are called special cells (SpCell). However, in the 3GPP fifth-generation communication system specification, DL-SPS, UL-SPS, and GF settings can now also be configured on secondary cells (SCell). Secondary cells are controlled by the network to be active or inactive, and neither transmission nor reception occurs in the inactive state. Activation to activate a secondary cell and deactivation to deactivate it are instructed by the SCell Activation / Deactivation MAC Control Element (CE) transmitted from the base station equipment to the mobile station equipment. Furthermore, each secondary cell is configured with an sCell Deactivation Timer (sCellDeactivationTimer). The sCell deactivation timer is activated or restarted when it receives an SCell Activation / Deactivation MAC CE from the base station equipment, instructing the activation or deactivation of the secondary cell. It is also restarted when it receives an uplink grant or downlink assignment on the secondary cell's PDCCH (Physical Downlink Control Channel), or when it receives an uplink grant or downlink assignment for that secondary cell on the PDCCH of another serving cell. Furthermore, when the sCell deactivation timer expires, the secondary cell on which it is configured is deactivated, and no control signals or data transmission on the uplink, nor control signals or data reception on the downlink, will occur until it is activated again.

[0020] Furthermore, if multiple Bandwidth Parts (BWPs) are configured on a serving cell, a BWP inactivity timer (bandwidthPartInactivityTimer) is set and started when any downlink BWP other than the default downlink BWP (or the initial downlink BWP if no default downlink BWP is configured) is active. The BWP inactivity timer is restarted when an uplink grant or downlink assignment is received on the PDCCH (Physical Downlink Control Channel) of the active downlink BWP on which it is configured. However, it is not restarted if an uplink grant or downlink assignment related to that active downlink BWP is received on the PDCCH of another serving cell. Furthermore, when the BWP inactivity timer expires, the BWP is switched from the configured downlink BWP to the default downlink BWP (or the initial downlink BWP if no default downlink BWP is configured), and communication on that serving cell continues. Note that BWPs are configured for both the uplink and downlink, but the uplink BWP and downlink BWP are paired one-to-one, and when the downlink BWP is switched, the uplink BWP that is paired with it is also switched.

[0021] However, if DL-SPS, UL-SPS, or GF is configured in the secondary cell and communication using these is activated, the mobile station equipment will not receive uplink grants or downlink assignments related to them via the PDCCH, and the sCell deactivation timer will not be restarted. As a result, there is a concern that the sCell deactivation timer may expire during communication, deactivating the secondary cell and rendering communication impossible.

[0022] One aspect of the present invention, in view of the above-mentioned problems, provides measures to prevent unintended deactivation of a secondary cell even when DL-SPS, UL-SPS, or GF is set as a secondary cell and communication is taking place using them.

[0023] Using Figure 2, an example of the message and data transmission flow between the base station device and the mobile station device at each time point, and a method for managing the sCell deactivation timer, when applied to UL-SPS as one aspect of the present invention, will be explained. First, at time t01, message m201 (SCell Activation / Deactivation MAC CE) instructing the activation of SCell is transmitted from the base station device to the mobile station device. Upon receiving message m201, the mobile station device activates SCell and starts the sCell deactivation timer. Next, at time t02, message m202 (RRC Reconfiguration) for adding UL-SPS to SCell is transmitted from the base station device to the mobile station device. Upon receiving message m202, the mobile station device performs the necessary processing to configure UL-SPS on SCell and sends a response message m203 (RRC Reconfiguration Complete) to the base station device at time t03. Next, at time t04, Layer 1 downlink control information m204 for activating the UL-SPS configured on SCell is sent from the base station device to the mobile station device. Upon receiving Layer 1 downlink control information m204, the mobile station device activates the configured uplink grant of UL-SPS and sends a response message m205 (Configured Grant Confirmation MAC CE) to the base station device at time t05. Note that the sCell deactivation timer may be restarted during the transmission / reception timing between messages m202 and m205 (from t02 to t05). Then, configured uplink grants occur at the timings set in message m202 (t10, t11, t12, t13). Although Figure 2 only shows up to t13, configured uplink grants continue to occur after t13 until the UL-SPS is deactivated again. When a configured uplink grant occurs, the mobile station equipment restarts the sCell deactivation timer.Then, at time t50, the base station equipment sends message m210 (SCell Activation / Deactivation MAC CE) to the mobile station equipment to deactivate SCell. Upon receiving message m210, the mobile station equipment deactivates SCell and stops the sCellDeactivationTimer.

[0024] As shown in Figure 3, the sCell deactivation timer may be restarted only at the timing (t12) when a configured uplink grant occurs and uplink data (message m206) is transmitted to the base station equipment. Furthermore, the messages (SCell Activation / Deactivation MAC CE, RRC Reconfiguration, RRC Reconfiguration Complete, Configured Grant Confirmation MAC CE) are not limited to these; any message that instructs or responds to an equivalent operation may be used.

[0025] As described above, by applying one aspect of the present invention, the state of the secondary cell can be appropriately managed even during UL-SPS communication on the secondary cell, and unintentional communication interruptions can be prevented.

[0026] (Second Embodiment) Next, as an example of the procedure when the present invention is applied to GF, an example of the procedure will be described as a second embodiment.

[0027] Figure 4 illustrates the message and data transmission flow between the base station and mobile station equipment at each time point in this embodiment, and an example of the sCell deactivation timer management method. Messages m401, m403, m406, and m410 are the same as messages m201, m203, m206, and m210 in Figure 2, and their explanation is omitted. Message m202 (RRC Reconfiguration) is sent from the base station equipment to the mobile station equipment to add GF to SCell. Then, configured uplink grants occur at the timings set in message m402 (t10, t11, t12, t13). Although Figure 4 only shows up to t13, the occurrence of configured uplink grants continues after t13 until the next GF is released. When a configured uplink grant occurs, the mobile station equipment restarts the sCell deactivation timer. Then, at time t50, the base station equipment sends message m410 (SCell Activation / Deactivation MAC CE) to the mobile station equipment to deactivate SCell. Upon receiving message m410, the mobile station equipment deactivates SCell and stops the sCellDeactivationTimer.

[0028] As shown in Figure 5, the sCell deactivation timer may be restarted only at the timing (t12) when a configured uplink grant occurs and uplink data (message m406) is transmitted to the base station equipment. Furthermore, the messages (SCell Activation / Deactivation MAC CE, RRC Reconfiguration, RRC Reconfiguration Complete, Configured Grant Confirmation MAC CE) are not limited to these; any message that instructs or responds to an equivalent operation may be used. In addition, the sCell deactivation timer may be restarted at the transmission / reception timing (t02, t03) of messages m402 or 403, or both.

[0029] As described above, by applying one aspect of the present invention, the state of the secondary cell can be appropriately managed even during GF communication on the secondary cell, and unintentional communication interruptions can be prevented.

[0030] (Third Embodiment) Next, as an embodiment of the present invention, a procedure for stopping the sCell deactivation timer during UL-SPS communication will be described as a third embodiment.

[0031] Figure 6 illustrates the flow of messages and data transmission between the base station device and the mobile station device at each time point in this embodiment, and an example of the management method for the sCell deactivation timer. First, at time t01, message m601 (SCell Activation / Deactivation MAC CE) instructing the activation of SCell is sent from the base station device to the mobile station device. Upon receiving message m601, the mobile station device activates SCell and starts the sCell deactivation timer. Next, at time t02, message m602 (RRC Reconfiguration) for adding UL-SPS to SCell is sent from the base station device to the mobile station device. Upon receiving message m602, the mobile station device performs the necessary processing to configure UL-SPS on SCell and sends a response message m603 (RRC Reconfiguration Complete) to the base station device at time t03. Next, at time t04, Layer 1 downlink control information m604 for activating the UL-SPS configured on SCell is sent from the base station device to the mobile station device. Upon receiving Layer 1 downlink control information m604, the mobile station device activates the configured uplink grant of UL-SPS and sends a response message m605 (Configured Grant Confirmation MAC CE) to the base station device at time t05, after which it stops the sCell deactivation timer and puts it into a state where startup / restarting is prohibited. When the sCell deactivation timer is in a state where it is disabled for activation / restarting, the sCell deactivation timer will not be activated or restarted in any case where uplink data and control information are transmitted or downlink data and control information is received on the SCell on which it is configured.Then, at time t20, when Layer 1 downlink control information m608 for deactivating the UL-SPS configured on SCell is transmitted from the base station equipment to the mobile station equipment, the mobile station equipment deactivates the configured uplink grant of SCell's UL-SPS, and at time t21, sends a response message m605 (Configured Grant Confirmation MAC CE) to the base station equipment, releasing the start / restart prohibition state of the sCell deactivation timer and starting it up. Subsequently, at time t50, the base station equipment sends a message m610 (SCell Activation / Deactivation MAC CE) to the mobile station equipment to deactivate SCell. Upon receiving message m610, the mobile station equipment deactivates SCell and stops the sCellDeactivationTimer.

[0032] Note that the following messages are not the only ones available: SCell Activation / Deactivation MAC CE, RRC Reconfiguration, RRC Reconfiguration Complete, and Configured Grant Configuration MAC CE. Any message that instructs or responds to a similar action may be used.

[0033] As described above, by applying one aspect of the present invention, the state of the secondary cell can be appropriately managed even during UL-SPS communication on the secondary cell, and unintentional communication interruptions can be prevented.

[0034] (Fourth Embodiment) Next, as an embodiment of the present invention, a procedure for stopping the sCell deactivation timer during GF communication will be described as a fourth embodiment.

[0035] Figure 7 illustrates the flow of messages and data transmission between the base station device and the mobile station device at each time point in this embodiment, and an example of the management method for the sCell deactivation timer. First, at time t01, message m701 (SCell Activation / Deactivation MAC CE) instructing the activation of SCell is sent from the base station device to the mobile station device. Upon receiving message m701, the mobile station device activates SCell and starts the sCell deactivation timer. Next, at time t02, message m702 (RRC Reconfiguration) for adding GF to SCell is sent from the base station device to the mobile station device. Upon receiving message m702, the mobile station equipment performs processing to configure GF on SCell, and at time t03, sends response message m703 (RRC Reconfiguration Complete) to the base station equipment, after which it stops the sCell deactivation timer and puts it into a start / restart disabled state. When the sCell deactivation timer is in the start / restart disabled state, the sCell deactivation timer will not be started or restarted in any case where uplink data and control information are transmitted or downlink data and control information is received on the SCell on which it is configured. Then, at time t20, when Layer 1 downlink control information m708 for releasing the GF set on SCell is transmitted from the base station device to the mobile station device, the mobile station device releases the GF set on SCell, and at time t21 sends a response message m709 (RRC Reconfiguration Complete) to the base station device, releasing the start / restart prohibition state of the sCell deactivation timer and starting it up. Subsequently, at time t50, the base station device sends a message m710 (SCell Activation / Deactivation MAC CE) to the mobile station device to deactivate SCell. Upon receiving message m710, the mobile station device deactivates SCell and stops the sCellDeactivationTimer.

[0036] Note that these messages (SCell Activation / Deactivation MAC CE, RRC Reconfiguration, RRC Reconfiguration Complete) are not the only ones that may be used; any message that instructs or responds to a similar action may be used.

[0037] As described above, by applying one aspect of the present invention, the state of the secondary cell can be appropriately managed even during GF communication on the secondary cell, and unintentional communication interruptions can be prevented.

[0038] (Fifth Embodiment) Next, as an example of the procedure when the present invention is applied to DL-SPS, an example of the procedure will be described as the fifth embodiment.

[0039] Figure 8 illustrates the flow of messages and data transmission between the base station device and the mobile station device at each time point in this embodiment, and an example of the management method for the sCell deactivation timer. First, at time t01, message m801 (SCell Activation / Deactivation MAC CE) instructing the activation of SCell is sent from the base station device to the mobile station device. Upon receiving message m801, the mobile station device activates SCell and starts the sCell deactivation timer. Next, at time t02, message m802 (RRC Reconfiguration) for adding DL-SPS to SCell is sent from the base station device to the mobile station device. Upon receiving message m802, the mobile station equipment performs the necessary processing to configure DL-SPS on SCell and sends a response message m803 (RRC Reconfiguration Complete) to the base station equipment at time t03. Then, configured downlink assignments occur at the timings set in message m802 (t10, t11, t12, t13). Although Figure 8 only shows up to t13, configured downlink assignments continue to occur after t13 until the DL-SPS is released again. Once a configured downlink assignment occurs, the mobile station equipment restarts the sCell deactivation timer. Then, at time t50, the base station equipment sends a message m810 (SCell Activation / Deactivation MAC CE) to the mobile station equipment to deactivate SCell. Upon receiving message m810, the mobile station equipment deactivates SCell and stops the sCellDeactivationTimer.

[0040] As shown in Figure 9, the sCell deactivation timer may be restarted only at the timing (t12) when a configured downlink assignment occurs and downlink data (message m806) is received from the base station equipment. Furthermore, the messages (SCell Activation / Deactivation MAC CE, RRC Reconfiguration, RRC Reconfiguration Complete, Configured Grant Configuration MAC CE) are not limited to these; any message that instructs or responds to an equivalent operation may be used. In addition, the sCell deactivation timer may be restarted at the transmission / reception timing (t02, t03) of messages m802 or m803, or both.

[0041] As described above, by applying one aspect of the present invention, the state of the secondary cell can be appropriately managed even during DL-SPS communication on the secondary cell, and unintentional communication interruptions can be prevented.

[0042] (Sixth Embodiment) Next, as an embodiment of the present invention, a procedure for stopping the sCell deactivation timer during DL-SPS communication will be described as a sixth embodiment.

[0043] Figure 10 illustrates the flow of messages and data transmission between the base station device and the mobile station device at each time point in this embodiment, and an example of the management method for the sCell deactivation timer. First, at time t01, message m1001 (SCell Activation / Deactivation MAC CE) instructing the activation of SCell is sent from the base station device to the mobile station device. Upon receiving message m1001, the mobile station device activates SCell and starts the sCell deactivation timer. Next, at time t02, message m1002 (RRC Reconfiguration) for adding DL-SPS to SCell is sent from the base station device to the mobile station device. Upon receiving message m1002, the mobile station equipment performs processing to configure DL-SPS on the SCell, and at time t03, sends a response message m1003 (RRC Reconfiguration Complete) to the base station equipment, after which it stops the sCell deactivation timer and puts it into a start / restart disabled state. When the sCell deactivation timer is in the start / restart disabled state, the sCell deactivation timer will not be started or restarted in any case where uplink data and control information are transmitted or downlink data and control information is received on the SCell on which it is configured. Then, at time t20, when Layer 1 downlink control information m1008 for releasing the DL-SPS set on SCell is transmitted from the base station device to the mobile station device, the mobile station device releases the DL-SPS set on SCell, and at time t21 sends a response message m1009 (RRC Reconfiguration Complete) to the base station device, releasing the start / restart prohibition state of the sCell deactivation timer and starting it up. Subsequently, at time t50, the base station device sends a message m1010 (SCell Activation / Deactivation MAC CE) to the mobile station device to deactivate SCell. Upon receiving message m1010, the mobile station device deactivates SCell and stops the sCellDeactivationTimer.

[0044] Note that each message (SCell Activation / Deactivation MAC CE, RRC Reconfiguration, RRC Reconfiguration Complete) is not limited to this, and messages that instruct or respond to equivalent operations may be used instead.

[0045] As described above, by applying one aspect of the present invention, it becomes possible to appropriately manage the state of the secondary cell even during DL-SPS communication on the secondary cell, and to prevent inadvertent communication interruption.

[0046] Note that the communication system, base station apparatus, mobile station apparatus, and communication method to which the present invention is applied are not limited to the 5th generation communication standard of 3GPP, and may be applied to communication standards used in other communication systems.

[0047] Note that a program for realizing all or part of the functions of the mobile station apparatus and base station apparatus described above may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed to perform processing of each part. Here, the "computer system" shall include hardware such as an OS and peripheral devices.

[0048] Also, the "computer system" shall include a homepage providing environment (or display environment) if the WWW system is being used.

[0049] Furthermore, "computer-readable recording media" refers to portable media such as flexible disks, magneto-optical disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into computer systems. Moreover, "computer-readable recording media" also includes devices that dynamically hold programs for a short period of time, such as communication lines used when transmitting programs over networks such as the Internet or communication lines such as telephone lines, and devices that hold programs for a certain period of time, such as volatile memory inside computer systems that act as servers or clients in such cases. In addition, the above-mentioned programs may be for the purpose of realizing some of the functions described above, and may also be able to realize the above-mentioned functions in combination with programs already recorded in the computer system.

[0050] Furthermore, all or part of the functions of the mobile station equipment and base station equipment may be integrated into an integrated circuit. Each functional block may be individually chipped, or some or all of them may be integrated into a single chip. In addition, the method of integration is not limited to LSIs; it may also be implemented using dedicated circuits or general-purpose processors. Moreover, if advances in semiconductor technology lead to the emergence of integrated circuit technologies that can replace LSIs, it is also possible to use integrated circuits based on those technologies.

[0051] While embodiments of this invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments and may include design modifications and the like that do not depart from the spirit of this invention.

[0052] The present invention is suitable for use in wired and wireless communication systems and communication devices.

Claims

DEPCT641. A mobile station of a communication system consisting of at least a base station and a mobile station, configured to conduct communication using carrier wave aggregation using multiple simultaneous service cells configured by the base station, where the mobile station restarts, the service cell deactivation timer of the multiple service cells is configured at the time indicated by the configured up-of-field authorization configured for the service cell.

2. A mobile station under claim 1, where, in the event that up-of-field data is transmitted at the time indicated by the configured up-of-field authorization configured for the service cell, the mobile station restarts, the service cell deactivation timer continues.3.A mobile station in a communication system consisting of at least a base station and a mobile station is configured to conduct communication using carrier wave aggregation, which uses multiple serviced cells simultaneously configured by the base station, where the mobile station stops the serviced cell deactivation timer in the event that the configured up license is deactivated for the serviced cell and restarts the serviced cell deactivation timer in the event that the configured up license is deactivated.

4. A mobile station under claim 3, in the event that a down control signal for the activation of the configured up license is received from the base station, the mobile station stops the serviced cell deactivation timer.

5. A mobile station under claim 3, in the event that a down control signal for the deactivation of the configured up license is received from the base station, the mobile station restarts the serviced cell deactivation timer. 6.A mobile station in a communication system consisting of at least a base station and a mobile station is configured to conduct communication using carrier wave aggregation, utilizing multiple simultaneous service cells configured by the base station, where the mobile station restarts, the service cell deactivation timer of the multiple service cells is activated at the time indicated by the configured down leg assignment for the service cell.

7. The mobile station, according to claim 6, where, in the event that down data is received at the time indicated by the configured down leg assignment for the service cell, the mobile station restarts, and the service cell deactivation timer continues. 8.A mobile station in a communication system, consisting of at least a base station and a mobile station, is configured to conduct communication using carrier wave aggregation, which utilizes multiple service cells simultaneously configured by the base station. The mobile station activates the service cell deactivation timer for the multiple service cells in the event that the configured downline handover is interrupted, and initiates the service cell deactivation timer in the event that the configured downline handover is interrupted.