[DESCRIPTION] SPECIFICATION [TITLE OF INVENTION] RADIO COMMUNICATION SYSTEM, RADIO TERMINAL, RADIO NETWORK, RADIO COMMUNICATION METHOD AND PROGRAM [TECHNICAL FIELD] [0001] The present invention relates to a radio communication system, a radio terminal, a radio network, a radio communication method, and a program therefor. [BACKGROUND ART] [0002] It is being investigated in a 3GPP (3rd Generation Partnership Project) to cause radio terminals to measure/report information conventionally collected by drive-tests or information similar hereto so as to reduce operation cost (OPEX) that is needed for the drive-tests (Drive-Test) to be performed by operators (Non-patent literature 11). The final goal of this investigation is to minimize execution of the drive-tests (Minimization of Drive-Tests: MDT. It is also called a substitute for the drive test (Drive Test Substitution)). In the feasibility study of the MDT, how the radio terminals are caused to measure the information and how the radio terminals are caused to report a log of the measurement results and the past measurement results are being discussed. Currently, the periodical reporting technique and the event triggered measurement reporting technique are specified. Additionally, what is herein called "the measurement" by the radio terminal also includes an operation of "detecting" some situations. [ 0003] In the periodical technique, a radio network (for example, a radio base station) previously notifies a measurement interval and/or a report interval to the radio terminal, and the radio terminal performs the measurement and/or the reporting according hereto. Herein, as the periodic measurement, there exist the periodical quality measurements of the downlink pilot signals (Periodical downlink pilot measurements). [0004] In the technology of the Non-patent literature 1, the radio terminal periodically performs the received quality measurement of the downlink pilot signals of serving cells (Periodical downlink pilot measurement), and periodically reports the measurement result. Herein, the so-called received quality measurement of the pilot signals is equivalent to measuring RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), CPICH RSCP (Common Pilot Channel Received Signal Code Power), CPICH Ec/No (Ec: received energy per chip, No: Noise power density), and the like. [0005] The details of the Non-patent literature 1 will be explained with 3GPP LTE (Long Term Evolution) exemplified by referencing Fig. 24. [0006] The radio terminal (UE: User Equipment) notifies a function the radio terminal itself supports to the radio base station (eNB: enhanced Node B) (UE capability report). [0007] A upper station (EPC: Evolved Packet Core, for example, NM: Network Manager), out of the radio networks, notifies a measurement policy (Measurement policy) to the eNB (Policy indication), and the eNB gives an instruction for the measurement and the reporting to the UE according to the above policy (Measurement logging and reporting configuration). Herein, it is assumed that the measurement and the reporting are performed at an interval Tl and at an interval T2, respectively. [0008] The UE performs the received quality measurement of the downlink pilot signals (for example, the RSRP) and the positioning at the interval Tl, maintains the measurement and the measurement result as a log (Logging), and reports the above log to the eNB at the interval T2 (Measurement report). In addition, the eNB reports the report coming from the UE to the upper NW (log report). [0009] Hereinafter, likewise, the UE repeats a series of the operations of the measurement/positioning - the logging - the reporting. [0010] Herein, for detennining a lapse of the intervalTl/T2, for example, a timer is used. Further, the UE finishes the above series of the operations when the UE is instructed to do so, for example, by the eNB. [0011] Additionally, in some cases, for not only a serving cell but also a neighboring cell, the received quality measurement of the downlink pilot signals is performed periodically. [0012] On the other hand, in the event trigger technique, the radio network (for example, the radio base station) previously notifies the condition, being a trigger for the measurement and/or the reporting, to the radio terminal, and the radio terminal performs the measurement and/or the reporting when the above condition is satisfied. Herein, the condition, being the trigger, includes, for example, a broadcast channel reception error (Broadcast Channel Failure), a paging channel reception error (Paging Channel Failure), the received quality of the serving cell becoming worse than a predetermined threshold (Serving Cell becomes worse than threshold), extra transmit power being less than a predetermined threshold (Transmit power headroom becomes less than threshold), a failure of a random access (Random access failure), and the like (Non-patent literature 2). Additionally, the radio terminal reports information of the time as well when the trigger has occurred together with the measurement result. [0013] In addition, the radio terminal having a positioning function is instructed to perform the positioning as well periodically or a time point when the trigger has occurred, and to report location information. [0014] In the technology of the Non-patent literature 2, the radio terminal performs the measurement (and the positioning) when the event is triggered, stores the result of the measurement (and the positioning) as the log, and reports it when the event is triggered. Herein, it is assumed that the condition under which the trigger of the measurement occurs is the paging channel reception error (Paging Channel Failure), and the radio terminal performs the received quality measurement of the downlink pilot signals of the serving cell at this time. Further, it is assumed that the condition under which the trigger of the reporting occurs is a time point when a predetermined amount of the logs have been accumulated, and the radio terminal reports the log to the radio network at this time. [0015] The details of the technology of the Non-patent literature 2 will be explained with the 3 GPP LTE exemplified by referencing Fig 25. [0016] The UE notifies functions the UE itself supports to the eNB (UE capability report). [0017] The EPC (for example, NM) notifies a measurement policy (Measurement policy) to the eNB (Policy indication), and the eNB gives an instruction for the measurement and the reporting to the UE according to the above policy (Measurement logging and reporting configuration). Herein, it is assumed that the trigger of the measurement is the paging channel reception error, and the trigger of the reporting is a time point when the amount of the logs (a memory capacity of the terminal used for the logs) has reached a predetermined value. [0018] The UE periodically receives the paging channels, performs the received quality measurement (for example, the RSRP) of the downlink pilot signals of the serving cell and the positioning thereof according to the above instruction when the paging channel reception error (Paging Channel failure) occurs, and maintains the measurement result and the positioning result together with the time of the occurrence of the paging channel reception error as the log (Logging). And, when the amount of the logs has reached a predetermined value, the UE reports the above logs to the eNB (Measurement report). In addition, the eNB reports the report coming from the UE to the upper NW (Log report). [0019] Hereinafter, likewise, the UE repeats a series of the operations of the measurement/positioning - the logging - the reporting. [0020] Herein, the UE finishes the above series of the operations when the UE is instructed to do so, for example, by the eNB. [0021] Additionally, in some cases, for not only the serving cell but also the neighboring cell, the received quality measurement of the downlink pilot signals is performed when the trigger of the measurement occurs. [CITATION LIST] [NON-PATENT LITERATURE] [0022] NON-PTL 1: 3GPPTR36.805vl.2.0 (internet) NON-PTL 2: 3GPPR2-094291 (internet http://www.3gpp.org/ftp/tsg_ranAVG2_RL2/TSGR2_67/Docs/R2-094191.zip>) [SUMMARRYOF INVENTION] [TECHNICAL PROBLEM] [0023] In the above-described technologies, the radio terminal performs the measurement/the reporting as instructed by the radio network. However, the measurement/the reporting for the MDT is basically a support function that the radio network expects for the radio terminal, and it is also thinkable that the measurement/the reporting is an excessive operation from a viewpoint of the radio terminal. For this, the following points at issue are expected. [0024] When the radio terminal performs the periodical measurement/reporting like the case of the Non-patent literature 1, it always performs the measurement/the reporting at an indicated timing, whereby the problem surfaces that a battery is consumed due to transmitting the information that the above radio terminal originally does not need to transmit and a load on the terminal becomes large particularly when a remaining quantity of the battery is few. [0025] Further, in a case of performing the measurement/the reporting when the event is triggered like the case of the Non-patent literature 2, for example, the radio terminal that is present in an environment in which the paging channel reception error more easily occurs results in performing the measurement/the positioning and the reporting more frequently. At this time, when many radio terminals are present in the identical environment (a certain specific scope), the case is expected in which it is not always necessary to cause all these radio terminals to perform the measurement/the reporting likewise. This causes, for example, a problem that an increase in the amount of the uplink radio resources to be used for the reporting due to the fact that many reporting terminals exist leads to a reduction in the uplink radio resource that can be used for transmitting the normal user's data, a problem that the radio terminal of which the remaining battery charge is few, as described above, excessively consumes the battery by measuring/reporting the information with a low necessity, and the like. [0026] Thereupon, the present invention has been accomplished in consideration of the above-mentioned problems, and an object thereof is to provide a radio communication system, a radio terminal, a radio network, a radio communication method, and a program therefor capable of collecting information that the radio network side requires while alleviating a load on the terminal caused by the measurement/positioning and/or the reporting, and/or deleting the reporting of the information with a low necessity. [SOLUTION TO PROBLEM] [0027] The present invention is a radio terminal having a function to collect and report measurement information to be indicated by a radio network, comprising: means that receives collection/reporting control information related to execution of at least one of the collection of the measurement information and the reporting of said measurement information to the radio network by the radio terminal; and controlling means that executes at least one of said collection and said reporting based on said collection/reporting control information when execution determination information related to at least one of the collection and the reporting of said measurement information by its own terminal satisfies a predetermined determination criterion. [0028] The present invention is a radio communication system for collecting and reporting, by a radio terminal, measurement information to be indicated by a radio network, comprising: notifying means that notifies collection/reporting control information related to execution of at least one of the collection of the measurement information and the reporting of said measurement information to the radio network by the radio terminal; means that receives said collection/reporting control information; and controlling means that executes at least one of said collection and said reporting based on said collection/reporting control information when execution determination information related to at least one of the collection and the reporting of said measurement information by the radio terminal satisfies a predetermined determination criterion. [0029] The present invention is a radio network in a radio communication system for collecting and reporting, by a radio terminal, measurement information to be indicated by the radio network, comprising a notifying means that notifies a determination criterion for determining execution of at least one of said collection and said reporting by said radio terminal based on execution determination information related to at least one of the collection and the reporting of said measurement information. [0030] The present invention is a radio communication method of collecting and reporting, by a radio terminal, measurement information to be indicated by a radio network, comprising: receiving, by the radio terminal, collection/reporting control information related to execution of at least one of the collection of the measurement information and the reporting of said measurement information to the radio network; and executing, by the radio terminal, at least one of said collection and said reporting based on said collection/reporting control information when execution determination information related to at least one of the collection and the reporting of said measurement information by its own terminal satisfies a predetermined determination criterion. [0031] The present invention is a radio communication method of collecting and reporting, by a radio terminal, measurement information to be indicated by a radio network, comprising: notifying collection/reporting control information related to execution of at least one of collection of the measurement information and reporting of said measurement information to the radio network by the radio terminal; receiving said collection/reporting control information; and executing at least one of said collection and said reporting based on said collection/reporting control information when execution determination information related to at least one of the collection and the reporting of said measurement information by the radio terminal satisfies a predetermined determination criterion. [0032] The present invention is a program of a radio terminal having a function to collect and report measurement information to be indicated by a radio network, causing the radio terminal to execute the processes of: receiving collection/reporting control information related to execution of at least one of the collection of the measurement information and the reporting of said measurement information to the radio network by the radio terminal; and executing at least one of said collection and said reporting based on said collection/reporting control information when execution determination information related to at least one of the collection and the reporting of said measurement information by its own terminal satisfies a predetermined determination criterion. [ADVANTAGEOUS EFFECT OF INVENTION] [0033] The present invention makes it possible to collect information that the radio network side requires while alleviating a load on the terminal caused by the measurement/positioning and/or the reporting, and/or deleting the reporting of the information with a low necessity. [BRIEF DESCRIPTION OF DRAWINGS] [0034] [Fig. 1] Fig. 1 is a functional constitution view of this exemplary embodiment. [Fig. 2] Fig. 2 is a sequence diagram for explaining a specific operation of a first exemplary embodiment. [Fig. 3] Fig. 3 is a sequence diagram for explaining a specific operation of a second exemplary embodiment. [Fig. 4] Fig. 4 is a constitution view of the radio communication system in a third exemplary embodiment. [Fig. 5] Fig. 5 is a block diagram of a radio terminal (UE) 30. [Fig. 6] Fig. 6 is a block diagram of a radio base station (eNB) 31. [Fig. 7] Fig. 7 is a view illustrating one example of the determination criterion information. [Fig. 8] Fig. 8 is a view illustrating one example of the determination criterion information. [Fig. 9] Fig. 9 is a block diagram of an NM 32. [Fig. 10] Fig. 10 is a sequence diagram for explaining a specific operation of the third exemplary embodiment. [Fig. 11 ] Fig. 11 is a view for explaining the third exemplary embodiment. [Fig. 12] Fig. 12 is an operational flowchart of the radio terminal (UE) 30. [Fig. 13] Fig. 13 is a view illustrating one example of the determination criterion information. [Fig. 14] Fig. 14 is a view illustrating one example of the determination criterion information. [Fig. 15] Fig. 15 is a view illustrating one example of the determination criterion information. [Fig. 16] Fig. 16 is a view illustrating one example of the determination criterion information. [Fig. 17] Fig. 17 is a sequence diagram for explaining an operation of a fourth exemplary embodiment. [Fig. 18] Fig. 18 is an operational flowchart of the radio terminal (UE) 30. [Fig. 19] Fig. 19 is a view illustrating one example of a table that the radio terminal (UE) 30 stores. [Fig. 20] Fig. 20 is a constitution view of the radio communication system in a fifth exemplary embodiment. [Fig. 21] Fig. 21 is a sequence diagram for explaining a specific operation of the fifth exemplary embodiment. [Fig. 22] Fig. 22 is an operational flowchart of the radio terminal (UE) 30. [Fig. 23] Fig. 23 is a constitution view of the radio communication system in a sixth exemplary embodiment. [Fig. 24] Fig. 24 is a view for explaining the technology related to the present invention. [Fig. 25] Fig. 25 is a view for explaining the technology related to the present invention. [DESCRIPTION OF EMBODIMENTS] [0035] The exemplary embodiments of the present invention will be explained. [0036] The radio terminal having a function to collect and report the measurement information to be indicated by the radio network receives collection/reporting control information related to execution of at least one of the collection of the measurement information and the reporting of the aforementioned measurement information to the radio network by the radio terminal. And, the exemplary embodiment is characterized in that the radio terminal executes, based on the aforementioned collection/reporting control information, at least one of the aforementioned collection and reporting when execution determination information related to at least one of the collection of the aforementioned measurement information and the reporting of thereof by its own terminal satisfies a predetermined determination criterion. [0037] Herein, the so-called execution determination information is information related to at least one of the measurement and the reporting of measurement log, which corresponds to the logs of the measurement results, by the radio terminal, and a concept including a terminal situation of the radio terminal and/or a collection situation of the measurement information, and the like. For example, as the terminal situation of the radio terminal, there exist the remaining battery charge of the radio terminal (an absolute value of the remaining battery charge, a quantized value thereof, an identification number (ID No.) previously associated with the remaining battery charge, a memory capacity of the battery, and the like), location information of the radio terminal (GPS, Cell, TA: Tracking Area, information of the outdoors/indoors, or location information acquired by other position detecting means (for example, OTDOA: Observed Time Difference Of Arrival Technique)), a communication quality (for example, RSRP, RSPQ, CPICH RSCP, and CPICH Ec/No), a moving speed (velocity) (an absolute value of the moving speed, a quantized value thereof, an ID No. previously associated with the moving speed, a pre-specified level of the moving speed, and the like), received strength of a GPS radio wave, and the like. [0038] Further, as the collection situation of the measurement information, there exist a sort of the collected measurement information (for example, a pre-specified ID No., a category, and the like), an amount of the collected measurement information (the number of times of the measurements, a memory usage amount of the radio terminal (UE memory usage), and the like), a location in which the measurement information has been collected, a summary of the collected measurement information (for example, a sort of the measurement information, respective numbers of times of the measurements for the above sort of the measurement information, information of the time when the measurement has been performed, information of the location in which the measurement has been performed (GPS, Cell, TA: Tracking Area), information of the outdoors/indoors, and the like), the moving speed, and the like, but the collection situation is not limited hereto. [0039] Herein, it is thinkable that the information of the outdoors/indoors can be acquired from, for example, whether the received strength of the radio wave to be used for acquiring the location information such as the GPS radio wave is equal to or more than a predetermined value, or less than it, whether the radio terminal is connected to an in-house small-size base station that is called HNB (Home NodeB) or HeNB (Home eNodeB) (detectable with PCI: Physical Cell ID), and the like. Further, with the moving speed, the case in which the moving speed can be actually measured with an acceleration sensor etc. mounted, and the case in which the moving speed is estimated based on the number (or frequency) of handovers or the number (or frequency) of re-selection of the cell are thinkable. [0040] Further, the predetermined determination criterion may be previously maintained by the radio terminal itself in some cases, or may be notified as the determination criterion information from the radio network in other cases. In addition, when the determination criterion information is notified, the method of notifying an item to be used for the execution determination and a corresponding determination criterion value may be used in some cases, or the method of previously specifying the item to be used for the execution determination and the corresponding determination criterion value as a table and providing only an ID No. (item No.) may be used in some cases. Additionally, the case in which the determination criterion value may not be necessary depending on the item is also thinkable. [0041] Further, the collection of the measurement information and the reporting of the collected measurement information by the radio terminal may be executed not only when all the predetermined determination criteria are satisfied, but also when a priority is provided for the item to be included in the execution determination information and the radio terminal satisfies a certain amount of priority. [0042] Additionally, basically, the terminal situation is preferably used as the execution determination information when it is determined whether the collection of the measurement information is executable or not, and the terminal situation and/or the collection situation are preferably used as the execution determination information when it is determined whether the reporting of the collected measurement information is executable or not. However, the determination of the execution is not limited hereto. [0043] Next, specific deteraiination examples using the above-described execution determination information will be explained. [0044] For example, in a case in which the execution determination information is the communication quality, the radio terminal performs the collection (or the reporting) of the measurement information when the communication quality of the radio terminal is less than (or equal to or more than) a predetermined threshold (determination criterion), and the radio terminal does not perform it when the communication quality is equal to or more than (or less than) the threshold. Further, in a case in which the execution determination information is the remaining battery charge, the radio terminal performs the collection (and/or the reporting) of the measurement information when the remaining battery charge is equal to or more than a predetermined threshold (determination criterion), and the radio terminal does not perform it when the remaining quantity is less than the predetermined threshold. Further, in a case in which the execution determination information is the location of the radio terminal, the radio terminal performs the collection (and/or the reporting) of the measurement information when the location of its own terminal is equivalent to a predetermined scope (determination criterion), and the radio terminal does not perform it otherwise. Further, in a case in which the execution determination information is the moving speed of the radio terminal, the radio terminal performs the collection (and/or the reporting) of the measurement information when the moving speed of its own terminal is equal to or less than a predetermined level (determination criterion), and the radio terminal does not perform it when the moving speed is higher. [0045] Additionally, as the measurement information, being a target that the radio terminal collects, the periodical quality measurement of the downlink pilot signals (Periodical downlink pilot measurements) is thinkable with the periodical method. On the other hand, with the event-triggered method, there exist the broadcast channel reception error (Broadcast Channel Failure), the paging channel reception error (Paging Channel Failure), the received quality of the serving cell becoming worse than a predetermined threshold (Serving Cell becomes worse than threshold), the extra transmit power being less than a predetermined threshold (Transmit power headroom becomes less than threshold), the failure of the random access (Random access (RA) failure), the radio link disconnection (Radio Link Failure: RLF), and the like. Further, with the case of the broadcast channel reception error (Broadcast Channel Failure), the paging channel reception error (Paging Channel Failure), the received quality of the serving cell becoming worse than a predetermined threshold (Serving Cell becomes worse than threshold), the extra transmit power being less than a predetermined threshold (Transmit power headroom becomes less than threshold), the failure of the random access (RA failure), and the radio link disconnection (RLF), it is also thinkable to collect the communication quality (for example, the RSRP, the RSRQ, the CPICH RSCP, and the CPICH Ec/No) of own cell (Serving cell) and/or the neighboring cells (Neighboring cell (s)) as well. In addition, it is also thinkable to collect the information of the location and the information of the time as well together. Additionally, this is only example, and the application target of the present invention is not limited hereto. [0046] Further, as the trigger of the radio terminal's performing the reporting of the collected measurement information, there exist an absolute time (Absolute time based), on demand from the radio network (for example, the radio base station) (On demand), periodical expiration of the timer (Periodical timer based), a terminal memory usage amount (an amount of the logs) (UE memory usage based), the location of the terminal (Location based), a combination of the above-mentioned items (Combined triggers), and the like; however, the trigger is not limited hereto. [0047] Additionally, what is herein called "the collection" signifies acquiring certain information by use of "the measurement" and "the detection", and storing "the above acquired result". Hereinafter, the measurement or the detection, an acquisition operation of information that is executed relatively hereto, and an operation in accordance therewith are described (defined) together as "a measurement" except for the case of particularly classifying and explaining the collection in details. Further, the measurement information, being information that the radio terminal acquires by use of the above broadly sensed "measurement" and stores, is defined as "a measurement log". In addition, hereinafter, it is premised that the result obtained by performing the measurement is stored unless otherwise specified, so the description on the explanation of an operation of "storing the measured result" is omitted. [0048] Fig. 1 is a functional constitution view of this exemplary embodiment. [0049] As shown in Fig. 1, the radio communication system of this exemplary embodiment, which is a radio communication system that collects the information by causing the radio terminals to measure/report the information that the radio network requires, includes a radio terminal 1 (UE) and a radio network 2. [0050] The radio terminal 1 (UE) has a logging/reporting capability memory 11 (Logging/reporting capability memory), a measuring & measurement result logging function 12 (Measurement logging function), a measurement/reporting execution deterrruning function 13 (Measurement/reporting decision function), and a measurement reporting function 14 (Measurement reporting function). [0051] The radio network 2 has an OAM (Operau^n/Administration/ Maintenance) policy & OAM requirement enforcement function 21 (OAM policy & requirement enforcement function) and a log storage function 22 (Log storage). [0052] In the radio communication system of this exemplary embodiment, the logging/reporting capability memory 11 of the radio terminal 1 firstly performs a terminal capability report related to a logging capability and a reporting capability (UE capability report). What is herein called the terminal capability report is a report of notifying a function that radio terminal 1 inherently includes (for example, existence or not of the measurement function of the communication quality or the GPS function, or detailed information related hereto). [0053] And, the OAM policy & OAM requirement enforcement function 21 of the radio network 2 references the above terminal capability report (UE capability report), decides the measurement method or the logging method of the measurement result of the above radio terminal 1 (Measurement and logging configuration), and the reporting method (Reporting configuration), and gives an instruction to the radio terminal 1. [0054] Further, the OAM policy & OAM requirement enforcement function 21 of the radio network 2 transmits the necessary predetermined determination criterion described above (only item (index) to be used for the execution determination, a reference value, an ID No. and a priority level corresponding to the item (index), and the like). [0055] The measurement/reporting execution determining function 13 of the radio terminal 1 determines whether the execution determination information of its own terminal (for example, terminal situation) satisfies a predetermined determination criterion, and determines whether or not to perform the measurement (and/or the reporting). And, in a case of performing the measurement, the measurement/reporting execution determining function 13 performs the measurement, and logs the measurement result according to the instructed measurement method and logging method. [0056] Additionally, as a measurement (or detection) target for which the radio terminal maintains the result as the measurement log, there exist the periodical quality measurement of the downlink pilot signals (Periodical downlink pilot measurements), the broadcast channel reception error (Broadcast Channel failure), the paging channel reception error (Paging Channel Failure), the received quality of the serving cell becoming worse than a predetermined threshold (Serving Cell becomes worse than threshold), the extra transmit power being less than a predetermined threshold (Transmit power headroom becomes less than threshold), the failure of the random access (Random access (RA) failure), the radio link disconnection (Radio link failure: RLF), and the like. Further, with the case of the broadcast channel reception error (Broadcast Channel Failure), the paging channel reception error (Paging Channel Failure), the received quality of the serving cell becoming worse than a predetermined threshold (Serving Cell becomes worse than threshold), the extra transmit power being less than a predetermined threshold (Transmit power headroom becomes less than threshold), the failure of the random access (RA failure), and the radio link disconnection (RLF), it is also thinkable to collect the communication quality (for example, the RSRR the RSRQ, the CPICH RSCP, and the CPICH Ec/No) of the above cell (Serving cell) and/or the neighboring cell(s) (Neighboring cell(s). In addition, it is also thinkable to log the information of the location and the information of the time together obtained by performing the above measurement (or detection) for all items (or one part thereof) that the radio terminal measures (or detects). Additionally, this is only example, and the application target of the present invention is not limited hereto. [0057] In a case of performing the measurement or the reporting, the measurement reporting function 14 performs the measurement, logs its result as the measurement log, and performs the reporting of the measurement log to the radio network 2 according to the instructed measurement method and reporting method (Measurement log report). [0058] This makes it possible to collect the information that the radio network side requires while alleviating a load on the terminal caused by the measurement and/or the logging of the above measurement result, and/or deleting the reporting of the information with a low necessity. [0059] Additionally, the above-described message to be transmitted from the radio terminal to the radio network, and the above-described message to be transmitted from the radio network to the radio terminal can be realized with RRC (Radio Resource Control) signaling and MAC (Medium Access Control) signaling; however the signaling is not limited hereto. [0060] Specific exemplary embodiments will be explained below.