CN102577590A - Apparatus and moethod for transmitting/receiving system information in broadband wireless communication system - Google Patents

Apparatus and moethod for transmitting/receiving system information in broadband wireless communication system Download PDF

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CN102577590A
CN102577590A CN2010800464612A CN201080046461A CN102577590A CN 102577590 A CN102577590 A CN 102577590A CN 2010800464612 A CN2010800464612 A CN 2010800464612A CN 201080046461 A CN201080046461 A CN 201080046461A CN 102577590 A CN102577590 A CN 102577590A
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sfh
counting
change
changes
value
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CN102577590B (en
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元钟衒
薛志允
李美贤
李斗熙
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE: A system information transmitting/receiving apparatus and method thereof are provided to inform system information which is updated through an IE(Information Element). CONSTITUTION: A system information decider(502) sets up a configuration switching flag as a first value. The system information decider sets up the configuration transition flag as a second value. An RF transmitter(510) transmits a P-SFH(Primary-Super Frame Header) including the fixed configuration switching flag to the first value or the second value.

Description

The apparatus and method of transmission/receiving system information in system of broadband wireless communication
Technical field
The present invention relates to system of broadband wireless communication.In more detail, the present invention relates to the apparatus and method of transmission/receiving system information in system of broadband wireless communication.
Background technology
At present, just to surmount voice in evolution be that main communication is so that various services to be provided, such as broadcasting, multimedia video, Multimedia Message etc. to GSM.The example of this next generation communication system has Institute of Electrical and Electric Engineers (IEEE) 802.16e system, now just in standardized third generation partner program (3GPP) Long Term Evolution (LTE) system, IEEE 802.20 Ultra-Mobile Broadbands (UMB) system, IEEE 802.16m system etc.
In order in GSM, to support high data transmission bauds, introducing various transmission technologys, such as using multiaerial system, mixed automatic repeat request (HARQ), adaptive modulation and coding (AMC) etc.In order to manage these transmission technologys, base station (BS) need send a large amount of system informations to a plurality of user's mobile radio stations (MS).System information comprises that user MS is used in the sub-district, carrying out network and the cell information that mobile communication must be known.For example; This information can comprise the information of the bandwidth information of sub-district, the configuration information of physical channel, the parameter on upper strata etc. etc.; And the information of the various transmission technologys of supporting in the sub-district, for example, the quantity of transmitting antenna, the information of many antennas, HARQ relevant information, modulation scheme information etc.
According to IEEE 802.16e standard, with the form transmitting system information of main superframe head (P-SFH) and secondary superframe head (S-SFH) as one of wireless communication standard.S-SFH is divided into son grouping 1 (SP1), SP2 and SP3.The transmit time segments of SP1, SP2 and SP3 can differ from one another.P-SFH comprises whether notice sends the information of S-SFH and its size in the same number of frames of sending SP.And P-SFH uses S-SFH to change counting (S-SFH change count) and S-SFH SP changes the change that bitmap (S-SFH SP change bitmap) is represented system information.P-SFH uses S-SFH schedule information bitmap to notify and in same number of frames, sends which SP.
S-SFH changes the SP that counting is mapped to transmission.For example, change counting at S-SFH and equal under the situation of ' N ', the SP1 of transmission, SP2 and SP3 comprise that ' S-SFH changes the system parameters of the state of counting=N '.Thereby the change that S-SFH changes counting means that at least one SP of S-SFH is updated.S-SFH SP changes bitmap and representes that which SP is changed.And each SPx comprises two offset parameter of the skew of the superframe that the use of the SP that indication wherein changes is initial, and when indication uses the new configuration that changes through offset parameter.Thereby after receiving new SPx, MS uses by the new argument in the superframe of the indication of the offset parameter in the SPx.
Be included in S-SFH among the P-SFH and change that counting has been updated with S-SFH SP change bitmap indication mechanism information and which SP is updated.Yet; Though MS is through the renewal of reception P-SFH recognition system information and the SPx of renewal; Fail owing to the mode of operation of channel degradation, sleep pattern etc. to receive at MS under the situation of SPx of renewal, MS must stop communication, because it does not know the time point of the SPx of application update.Thereby MS can't executive communication, till the SPx that successfully decodes.Thereby, need a kind of replacement, even make MS fail to receive the SPx of renewal, the time point of the SPx that also can upgrade through recognition application comes executive communication till the system information of application update.
Summary of the invention
Solution
One side of the present invention is to solve at least the problems referred to above and/or not enough and following at least advantage is provided.Thereby one aspect of the present invention is, is provided at the apparatus and method of the time point of the system information that notification applications is upgraded in the system of broadband wireless communication.
Another aspect of the present invention is, is provided at the apparatus and method that the information element (IE) that sends through each superframe in the system of broadband wireless communication comes the time point of the system information that notification applications upgrades.
Another aspect of the present invention is, is provided at the apparatus and method of the son grouping (SP) of upgrading multiple pieces of system information in the system of broadband wireless communication simultaneously.
Realize above each side through the apparatus and method that are provided at transmission/receiving system information in the system of broadband wireless communication.
The method of operation of the base station (BS) in a kind of system of broadband wireless communication is provided according to an aspect of the present invention.This method comprises: determine whether to use the corresponding system configuration of preceding value that changes counting with the secondary superframe head (S-SFH) that renewal according to system information changes; When using when changing the corresponding system configuration of the preceding value of counting, represent that the parameter of the system configuration of application is set to first value with S-SFH; When using when changing the corresponding system configuration of the currency counted with S-SFH, this parameter is set to second value; And transmission comprises that S-SFH changes the main superframe head (P-SFH) of counting and being set to this parameter of first value or second value.
The method of operation of the mobile radio station (MS) in a kind of system of broadband wireless communication is provided according to another aspect of the present invention.This method comprises: the value of the parameter of the system configuration that identification expression is used and change the value of counting according to the S-SFH that the renewal of system information changes, and this parameter changes counting with S-SFH and is included among the P-SFH through the SFH reception; Value in this parameter equals under the situation of first value, uses the corresponding system configuration of preceding value that changes counting with S-SFH, and executive communication; And equal under the situation of second value in the value of this parameter, use with S-SFH and change the corresponding system configuration of counting of currency, and executive communication.
The method of operation of MS in a kind of system of broadband wireless communication is provided according to another aspect of the present invention.This method comprises: identification changes counting according to the S-SFH of the renewal change of system information, and S-SFH changes counting and is included among the P-SFH through the SFH reception; Change at S-SFH under the situation of the value increase of counting, use the S-SFH SP that is included among the P-SFH to change at least one SP that bitmap is discerned the renewal of S-SFH; Confirm the time point of at least one SP of the said renewal of transmission; Use the time point that sends said SP to confirm to use the superframe of the system configuration corresponding with the currency of S-SFH change counting; And if the superframe of confirming arrives, then use with S-SFH and change the corresponding system configuration of counting of currency, and executive communication.
According to a further aspect of the invention, BS device in a kind of system of broadband wireless communication is provided.This device comprises determiner and transmitter.The S-SFH that determiner determines whether to use with renewal according to system information changes changes the corresponding system configuration of preceding value of counting.Afterwards, when using when changing the corresponding system configuration of the preceding value of counting with S-SFH, determiner representes that the parameter of the system configuration of application is set to first value.When using when changing the corresponding system configuration of the currency counted with S-SFH, this parameter of determiner is set to second value.Transmitter sends and comprises that S-SFH changes the P-SFH that counts and be set to this parameter of first value or second value.
According to another aspect of the present invention, MS device in a kind of system of broadband wireless communication is provided.This device comprises manager and controller.The value of the parameter of the system configuration that manager identification expression is used and change the value of counting according to the S-SFH that the renewal of system information changes.This parameter and S-SFH change counting and are included among the P-SFH that receives through SFH.Value in this parameter equals under the situation of first value, and controller is used the corresponding system configuration of preceding value that changes counting with S-SFH, and executive communication.Value in this parameter equals under the situation of second value, and controller is used the corresponding system configuration of currency that changes counting with S-SFH, and executive communication.
According to a further aspect of the invention, MS device in a kind of system of broadband wireless communication is provided.This device comprises manager and controller.Manager identification changes counting according to the S-SFH of the renewal change of system information.S-SFH changes counting and is included among the P-SFH that receives through SFH.Change at S-SFH under the situation of the value increase of counting; Manager uses the S-SFH SP that is included among the P-SFH to change at least one SP that bitmap is discerned the renewal of S-SFH; Confirm to send the time point of at least one SP of said renewal, and the superframe of the corresponding system configuration of the currency that uses the time point that sends said SP to confirm to use to count with the S-SFH change.If the superframe of confirming arrives, then controller is used the corresponding system configuration of currency that changes counting with S-SFH, and executive communication.
Disclose the following detailed description of example embodiment of the present invention in conjunction with the drawings, other aspects of the present invention, advantage and notable feature will become more obvious to those skilled in the art.
Description of drawings
Following description in conjunction with the drawings, above and other aspects, characteristic and the advantage of particular exemplary embodiment of the present invention will be more obvious, wherein:
Fig. 1 is the figure of explanation according to the frame structure in the system of broadband wireless communication of example embodiment of the present invention;
Fig. 2 to Fig. 4 is the figure of explanation according to the time point of the transmitting system information in the system of broadband wireless communication of example embodiment of the present invention;
Fig. 5 is the flow chart of explanation according to the system information process of transmitting of the base station in the system of broadband wireless communication of example embodiment of the present invention (BS);
Fig. 6 is the flow chart of explanation according to the system information acquisition process of the mobile radio station in the system of broadband wireless communication of example embodiment of the present invention (MS);
Fig. 7 is the block diagram of explanation according to the structure of the BS in the system of broadband wireless communication of example embodiment of the present invention; And
Fig. 8 is the block diagram of explanation according to the structure of the MS in the system of broadband wireless communication of example embodiment of the present invention.
Run through accompanying drawing, should be noted that the same reference numeral is used in reference to same or analogous element of generation, characteristic and structure.
Embodiment
The of the present invention example embodiment of following explanation to help complete understanding to be limited claims and equivalent thereof with reference to accompanying drawing is provided.It comprises various details to help to understand but will to regard as only be exemplary for these.Therefore, persons of ordinary skill in the art will recognize that and to carry out various changes and modification to each embodiment described here and do not deviate from the spirit and scope of the present invention.In addition, from clear and succinct event, the explanation of known function and structure is removed.
The term and the words that below use in explanation and claims are not limited to dictionary meanings, but, only be used for making understanding of the present invention clear with consistent by the inventor.Therefore, it will be apparent to those skilled in the art that provides the following explanation of example embodiment of the present invention only to be used for illustrative purposes, and is not to be used to limit the object of the invention that is limited accompanying claims and equivalent thereof.
Should be appreciated that singulative " ", " one " and " being somebody's turn to do " comprise plural form, only if outside context clearly representes.Therefore, for example, referring to of " assembly surface " comprised referring to one or more such surfaces.
Term " basically " means that described characteristic, parameter or value do not need accurately to obtain; But deviation or variation can appear in quantity; Comprise for example tolerance, measure error, certainty of measurement restriction and well known to a person skilled in the art other factors, and this can not get rid of effect and characteristic that intention provides.
Exemplary technique according to the time point of the system information that notification applications is upgraded in system of broadband wireless communication of the present invention is described below.Below describe and carry out, but also be applicable to other wireless communication systems with reference to OFDM (OFDM)/OFDM (OFDMA) wireless communication system.
Fig. 1 explanation is according to the frame structure in the system of broadband wireless communication of example embodiment of the present invention.
With reference to Fig. 1, superframe 100 is divided into a plurality of frames 110, and frame 110 is divided into the subframe 120 that comprises a plurality of OFDM code elements 130.First subframe 120 of first frame 110 in the superframe 100 comprises superframe head (SFH) 140.SFH 140 comprises synchronizing channel, CCCH etc.SFH 140 is the zones that are used to send mobile radio station (MS) and the corresponding necessary system information of base station (BS) executive communication.System information is divided into main superframe head (P-SFH) and secondary superframe head (S-SFH).S-SFH is divided into son grouping 1 (SP1), SP2 and SP3.For describing conveniently, below SP1, SP2 and SP3 are referred to as ' SPx '.
S-SFH always is included among the SFH 140, and SPx optionally is included among the SFH 140.For example, each SPx sent according to the period of correspondence.Be included under the situation among the SFH 140 at SPx, SPx is mapped to the continuous resource that is positioned at the resource that is occupied by P-SFH.So MS can use the SPx dimension information that is included among the P-SFH to extract the SPx in the frame.P-SFH and each SPx distinguish according to the kind of the parameter that comprises.The structure of the actual parameter of each information element (IE) can be according to user's intention and difference.For example, following table 1 is to the parameter that is included in table 4 illustrate among P-SFH and the SPx.In more detail, following table 1 illustrates the parameter that is included among the P-SFH.Following table 2 illustrates the parameter that is included among the SP1, and following table 3 illustrates the parameter that is included among the SP2, and following table 4 illustrates the parameter that is included among the SP3.
[table 1]
[table 2]
Figure BDA0000153469560000062
[table 3]
Figure BDA0000153469560000072
Figure BDA0000153469560000081
[table 4]
Figure BDA0000153469560000082
Figure BDA0000153469560000091
BS according to example embodiment of the present invention comprises configuration transition mark (CTF) in P-SFH.CTF is the parameter that the system configuration corresponding with the currency of S-SFH change counting used or do not used in expression.Definition in the CTF table 5 below.CTF can be different names in actual execution mode.For example, CTF can be called as the S-SFH application and keep designator.
[table 5]
Equal ' N ' and CTF at the currency that S-SFH changes counting and equal under ' 0 ' the situation, MS uses to change with S-SFH and counts (N) corresponding system configuration (that is, depending on the system configuration of current system information of sending).On the contrary; Equaling ' N ' and CTF at the currency that S-SFH changes counting equals under ' 1 ' the situation; MS uses with S-SFH and changes the corresponding system configuration of counting (N-1) (that is, depending on the system configuration that S-SFH changes the system information of sending when counting equals ' N-1 ').
Because P-SFH comprises CTF, the transmission/reception of following executive system information.
Fig. 2 to Fig. 4 explanation is according to the time point of the transmitting system information in the system of broadband wireless communication of example embodiment of the present invention.Fig. 2 explains that transmission is together with increasing the situation that S-SFH changes the SPx of counting renewal.
With reference to Fig. 2, during the duration 1 211, S-SFH changes counting and equals ' N ', and S-SFH SP change bitmap equals ' 0b000 '.At this moment, because CTF equals ' 0 ', so application-dependent is in the system configuration of the SPx corresponding with the currency of S-SFH change counting.Thereby the MS that newly gets into BS receives the SPx of current transmission, and application-dependent is in the system configuration of the SPx that receives.
During the duration 2 212, because the renewal of SP2, S-SFH changes counting and becomes ' N+1 ', and S-SFH SP change bitmap becomes ' 0b010 '.Here, to change into ' 1 ' be result according to the rule of the renewal of notice SPx in S-SFH SP second renewal according to SP2 changing bitmap.Here, this rule be switch (toggle) position corresponding with the SPx that upgrades and with the SPx of renewal corresponding value be set to one of ' 1 '.Because S-SFH changes counting and increases,, MS is updated so recognizing system information.Change bitmap through S-SFH SP, MS confirms that SP2 is updated.And the frame of the time point when SP2 increases through S-SFH change counting sends, thereby through decoding SP2, MS obtains the system information of renewal, and stores the system information of obtaining.Yet,, change the system information of counting when equaling ' N ' so the system information of current application is abideed by S-SFH because CTF equals ' 1 '.Thereby MS is the SP2 of application memory not, but in system configuration, is reflected in the SP2 that receives during the duration 1 211.
During the duration 3 213, system information is not updated, but CTF changes into ' 0 '.Thereby MS recognizes that the system configuration that depends on the system information that during the duration 2 212, changes is employed, and is applied in the SP2 that receives and store during the duration 2 212.Among Fig. 2, during the duration 3 213, CTF changes into ' 0 ', still keeps ' 0b010 ' but S-SFH SP changes bitmap.Yet according to example embodiment of the present invention, S-SFH SP changes bitmap can be initialized to ' 0b000 ' when CTF changes into ' 0 '.
In the example embodiment shown in Figure 2, the time point when CTF changes into ' 0 ' is used the corresponding system configuration of currency that changes counting with S-SFH.Yet, according to another exemplary embodiment of the present invention, can begin to change the corresponding system configuration of counting of currency by the time point when CTF changes into ' 0 ' through using after a plurality of superframes with S-SFH, for example, begin from next superframe.
Fig. 3 explanation is sent in the situation that S-SFH changes the SPx that upgrades after the counting that increases.With reference to Fig. 3, during the duration 1 221, S-SFH changes counting and equals ' N ', and S-SFH SP change bitmap equals ' 0b000 '.At this moment, because CTF equals ' 0 ', so application-dependent is in the system configuration of the SPx corresponding with the currency of S-SFH change counting.Thereby the MS that newly gets into BS receives the SPx of current transmission, and application-dependent is in the system configuration of the SPx that receives.
During the duration 2 222, because the renewal of SP2, S-SFH changes counting and becomes ' N+1 ', and S-SFH SP change bitmap becomes ' 0b010 '.It is result according to the rule of the renewal of notice SPx that second renewal according to SP2 that S-SFH SP changes bitmap changes into ' 1 '.Here, this rule be switch the position corresponding with the SPx that upgrades and with the SPx of renewal corresponding value be set to one of ' 1 '.Because S-SFH changes counting and increases,, MS is updated so recognizing system information.Change bitmap through S-SFH SP, MS confirms that SP2 is updated.But, being different from the situation of Fig. 2, the frame of the time point the when SP2 of renewal does not change counting and increases through S-SFH sends.Yet, because CTF equals ' 1 ', so the system information of current application is abideed by the system information when S-SFH change counting equals ' N '.Thereby, still not receiving SP2 no matter receive, MS is reflected in the SP2 that receives during the duration 1 221 in system configuration.Begin to send SP2 in the change that changes counting and S-SFH SP change bitmap from S-SFH through after several superframes.Thereby through decoding SP2, MS obtains the system information of renewal, and stores the system information of obtaining.At this moment, because CTF is maintained ' 1 ', thus the MS SP2 of application memory not, but be applied in the SP2 that receives during the duration 1 221.
During the duration 3 223, system information is not updated, but CTF changes into ' 0 '.Thereby MS recognizes that the system configuration that depends on the system information that during the duration 2 222, changes is employed, and is applied in the SP2 that receives and store during the duration 2 222.Among Fig. 3, during the duration 3 223, CTF changes into ' 0 ', still keeps ' 0b010 ' but S-SFH SP changes bitmap.Yet according to another example embodiment of the present invention, S-SFH SP changes bitmap can be initialized to ' 0b000 ' when CTF changes into ' 0 '.
In the example embodiment shown in Figure 3, the time point when CTF changes into ' 0 ' is used the corresponding system configuration of currency that changes counting with S-SFH.Yet, according to another exemplary embodiment of the present invention, can begin to change the corresponding system configuration of counting of currency by the time point when CTF changes into ' 0 ' through using after a plurality of superframes with S-SFH, for example, begin from next superframe.
Fig. 4 explanation is sent in the situation that S-SFH changes the SPx that upgrades after the counting that increases.With reference to Fig. 4, during the duration 1 231, S-SFH changes counting and equals ' N ', and S-SFH SP change bitmap equals ' 0b000 '.At this moment, because CTF equals ' 0 ', so application-dependent is in the system configuration of the SPx corresponding with the currency of S-SFH change counting.Thereby the MS that newly gets into BS receives the SPx of current transmission, and application-dependent is in the system configuration of the SPx that receives.
During the duration 2 232, because the change of SP1, SP2 and SP3, S-SFH changes counting and becomes ' N+1 ', and S-SFH SP change bitmap becomes ' 0b111 '.Here, S-SFH SP first, second and the 3rd that change bitmap to change into ' 1 ' according to the renewal of SP1, SP2 and SP3 be result according to the rule of the renewal of notice SPx.Here, this rule be switch the position corresponding with the SPx that upgrades and with the SPx of renewal corresponding value be set to one of ' 1 '.Because S-SFH changes counting and increases,, MS is updated so recognizing system information.Change bitmap through S-SFH SP, MS confirms that SP1, SP2 and SP3 are updated.At this moment, have only SP1 to pass through S-SFH and change the frame transmission of counting the time point when increasing, and SP2 and SP3 are not sent out.Yet, because CTF equals ' 1 ', so the system information of current application is abideed by the system information when S-SFH change counting equals ' N '.Thereby, MS decoding and storage SP1, and no matter reception does not still receive SP2 and SP3, MS is reflected in the SPx that receives during the duration 1 231 in system configuration.Begin to press definite sequence and send SP2 and SP3 in the change that changes counting and S-SFH SP change bitmap from S-SFH through after several superframes.Thereby through decoding SP2 and SP3, MS obtains the system information of renewal, and stores the system information of obtaining.At this moment, because CTF is maintained ' 1 ', thus the MS SPx of application memory not, but be applied in the SPx that receives during the duration 1 231.
During the duration 3 233, system information is not updated, but CTF changes into ' 0 '.Thereby MS recognizes that the system configuration that depends on the system information that during the duration 2 232, changes is employed, and is applied in the SP2 that receives and store during the duration 2 232.Among Fig. 4, during the duration 3 233, CTF changes into ' 0 ', still keeps ' 0b111 ' but S-SFH SP changes bitmap.Yet according to example embodiment of the present invention, S-SFH SP changes bitmap can be initialized to ' 0b000 ' when CTF changes into ' 0 '.
In the exemplary embodiment of figure 4, the time point when CTF changes into ' 0 ' is used the corresponding system configuration of currency that changes counting with S-SFH.Yet, according to another exemplary embodiment of the present invention, can begin to change the corresponding system configuration of counting of currency by the time point when CTF changes into ' 0 ' through using after a plurality of superframes with S-SFH, for example, begin from next superframe.
In the process of describing with reference to Fig. 2 to Fig. 4, BS confirms to use the corresponding system configuration of preceding value that changes counting with S-SFH during predetermined lasting time.Here, whether use change the criterion of the corresponding system configuration of the preceding value of counting with S-SFH can be according to user's intention and different.
For example, can depend on the SPx whether MS that inserts BS receive update all and determine whether to use the corresponding system configuration of preceding value that changes counting with S-SFH.Under this situation, BS can use the time point of distribution and the SPx that send to upgrade of the monitoring duration of sleep pattern or idle pulley MS to confirm to use still not use with S-SFH to change the corresponding system configuration of counting of preceding value.Thereby if all MS has the monitoring duration in the time point of the SPx that at least one transmission is upgraded, then BS confirms to use the corresponding system configuration of counting with the S-SFH change of currency.
As another example; Do not change counting and S-SFH SP at S-SFH at the SPx of at least one renewal and change under the situation of superframe place that bitmap changes sending, whether the transmission that can depend on the SPx of this at least one renewal has been accomplished to determine whether to use with S-SFH and has been changed the corresponding system configuration of counting of preceding value.Under this situation, after the transmission of the SPx of this at least one renewal was accomplished, BS confirmed to use with S-SFH and changes the corresponding system configuration of counting of currency.In more detail, begin from next superframe that sends after accomplishing once or twice of the SPx that upgrades, BS can use with S-SFH and change the corresponding system configuration of counting of currency.At this moment, the BS kind that can depend on SPx is used the number of times of transmission differently.For example, under the situation of SP1 or SP2 change, after the transmission once or twice of SP1 that upgrades or SP2 was accomplished, BS can use the corresponding system configuration of currency that changes counting with S-SFH.Under the situation that SP3 changes, after the transmission once of the SP3 that upgrades, BS can use the corresponding system configuration of currency that changes counting with S-SFH.At this moment, under the situation that a plurality of SPx change, the application point of time place the latest that BS is desirably in the middle of the application point of time that depends on each SPx uses the corresponding system configuration of currency that changes counting with S-SFH.
As another example, whether can depend on and to change counting from S-SFH and increase beginning and determine whether to use the corresponding system configuration of preceding value that changes counting with S-SFH through the superframe of predetermined quantity.Under this situation, if do not pass through the superframe of predetermined quantity as yet, then BS confirms to use the corresponding system configuration of preceding value that changes counting with S-SFH.
As another example, can change at S-SFH and use the corresponding system configuration of currency that changes counting with S-SFH when counting increases.At this moment, BS begins to use the corresponding system configuration of currency that changes counting with S-SFH from the superframe that S-SFH changes the counting increase.Thereby BS CTF is set to ' 0 '.
As stated, can confirm to use the time point of the system configuration corresponding according to various schemes with the currency of S-SFH change counting.Under any circumstance; MS can judge voluntarily equally and use the time point that changes the corresponding system configuration of the currency of counting with S-SFH, as sending once or twice of the SPx that depends on renewal in the middle of the above-mentioned example embodiment accomplish or uncompleted scheme, depend on through or as yet not through the scheme of the superframe of predetermined quantity, change the simultaneously applied scheme of counting increase etc. at S-SFH.Under this situation, MS can change the corresponding system configuration of currency of counting with S-SFH in the time point application that MS judges voluntarily and need not with reference to CTF.
For example, the scheme of sending or not sending the SPx that upgrades that depends on is described below.Because SPx (that is, SP1, SP2 and SP3) sends by the interval of predetermined superframe according to the period separately separately, MS can use the transmit time segments of superframe numbering and each SPx to confirm to receive therein the superframe of corresponding SPx.So MS changes the SPx that bitmap is recognized change through S-SFH SP, confirm to send the time point of SPx, and begin to use the corresponding system configuration of currency that changes counting with S-SFH from next superframe of the superframe that receives SPx.In more detail, change bitmap at S-SFH SP and equal under the situation of ' 0b010 ', MS changes bitmap through S-SFH SP and confirms that SP2 is updated.And; MS uses the transmit time segments of superframe numbering and SP2 to confirm to send next time point of SP2, and next superframe of the superframe of accomplishing from twice transmission of the SP2 that upgrades begins to use the corresponding system configuration of counting with the S-SFH change of the SP2 that reflects renewal of currency.
With reference to the BS of transmission/receiving system information and operation and the structure of MS carry out following description as stated.
Fig. 5 explanation is according to the system information process of transmitting of the BS in the system of broadband wireless communication of example embodiment of the present invention.
With reference to Fig. 5, in step 301, BS confirms whether the start time point of superframe arrives.In other words, BS confirms whether the time point that needs to send SFH arrives.
Arrive if confirm the start time point of superframe in step 301, then BS gets into step 303, and determines whether to be necessary updating system information.Here, system information comprises P-SFH and S-SFH, and S-SFH is divided into a plurality of SPx.For example, the change through sub-channelizing, range finding and system's setting (such as the mapping version) waits the renewal of accomplishing system information.That is, BS determines whether to need to upgrade the SPx that sends through SFH owing to the change that system is provided with.
If need to confirm updating system information in step 303, then BS gets into step 305, and upgrades corresponding SPx.That is, BS upgrades the SPx of the parameter of the system's setting that comprises that reflection changes.At this moment, can upgrade one or more SPx.On the contrary, if do not need to confirm updating system information in step 303, then BS gets into step 309.
In step 305, upgrade after the SPx, BS gets into step 307, and changes S-SFH change counting and S-SFH SP change bitmap.S-SFH changes counting and S-SFH SP change bitmap is the parameter that is included among the P-SFH.S-SFH changes the renewal of counting expression SPx or does not upgrade, and S-SFH SP changes the SPx that the bitmap indication is upgraded.The value that S-SFH changes counting increases along with the renewal of SPx, and only increases through the number of times that upgrades, and no matter the quantity of the SPx that upgrades.It is the bit stream with length the same with the quantity of the SPx that uses in the system that S-SFH SP changes bitmap, and when SPx upgraded, the place value of the position corresponding with the SPx of renewal was changed.
In step 307, change S-SFH and change after counting and the S-SFH SP change bitmap, BS gets into step 309, and determines whether to use the corresponding system configuration of preceding value that changes counting with S-SFH.Here, whether use change the criterion of the corresponding system configuration of the preceding value of counting with S-SFH can be according to practical demonstration property embodiment and different.For example, BS according to the MS that inserts BS received the SPx of update all condition, S-SFH change counting increase after the transmission of SPx of at least one renewal accomplish ' N ' inferior or condition and change counting from S-SFH and increase beginning and determined whether to use with S-SFH and change the corresponding system configuration of counting of preceding value more frequently through at least one of the condition of the superframe of predetermined quantity.That is, satisfying under the situation of at least one said condition, BS confirms to use the corresponding system configuration of currency that changes counting with S-SFH.
If in step 309, confirm to use the corresponding system configuration of preceding value that changes counting with S-SFH, then BS gets into step 311, and will represent that the parameter (for example, CTF or S-SFH use and keep designator) of the system configuration of application is set to ' 1 '.On the contrary, if in step 309, confirm to use the corresponding system configuration of currency that changes counting with S-SFH, then BS gets into step 313, and CTF is set to ' 0 '.CTF or the S-SFH application that will use the parameter of which system configuration as expression keep designator to be included among the P-SFH.For describing conveniently, this parameter is called CTF below among the present invention.
Afterwards, BS gets into step 315, and determines whether to need to send SPx.For example, each SPx can send according to its oneself period.Under this situation, the period of each SPx of BS identification, and whether definite transmit time segments arrives.As another example, under the situation of upgrading specific SPx, this specific SPx can send when upgrading, and perhaps can begin from renewal through sending after the predetermined frame.Under the situation that a plurality of SPx change simultaneously, on a plurality of superframes, send these a plurality of SPx, because they can't send through a superframe.Under this situation, BS confirms that needing to press definite sequence sends SPx at each superframe.
If in step 315, confirm to there is no need to send SPx, then BS gets into step 317, and sends P-SFH through SFH.Here, P-SFH comprises that S-SFH changes counting, S-SFH SP changes bitmap, CTF and S-SFH schedule information bitmap.At this moment, S-SFH schedule information bitmap is set to represent not send the value of SPx.
On the contrary, if in step 315, define necessary transmission SPx, then BS gets into step 319, and S-SFH schedule information bitmap is set.S-SFH schedule information bitmap is the bit stream with length the same with the quantity of the SPx that uses in the system, and when SPx sent, the place value of the position corresponding with the SPx that sends was set to ' 1 '.That is, BS uses S-SFH schedule information bitmap to produce SPx transmission and corresponding SPx appointed information, the SPx so that MS can decode.
In step 319, be provided with after the S-SFH schedule information bitmap, BS gets into step 321, and through PSH send with S-SFH change the corresponding SPx of the currency counted and P-SFH the two.Here, P-SFH comprises that S-SFH changes counting, S-SFH SP changes bitmap, CTF and S-SFH schedule information bitmap.
Fig. 6 explanation is according to the system information acquisition process of the MS in the system of broadband wireless communication of example embodiment of the present invention.
With reference to Fig. 6, in step 401, MS confirms whether the start time point of superframe arrives.In other words, MS confirms whether the time point that needs to receive SFH arrives.
Arrive if in step 401, confirm the start time point of superframe, then MS gets into step 403, and decoding P-SFH.Because P-SFH encodes with predefined encoding scheme, and the predefine position through SFH receives, so even if MS does not have the independent assignment information P-SFH that yet can decode.Through the P-SFH that decodes, MS obtains the parameter of the system configuration of system information, S-SFH change counting, S-SFH SP change bitmap, S-SFH schedule information bitmap and expression application.Here, the parameter of the system configuration of expression application can be called as CTF or S-SFH application maintenance designator.For describing conveniently, this parameter is called CTF below among the present invention.
After decoding P-SFH, MS gets into step 405, and whether definite S-SFH change counting increases.In more detail, MS will be included in S-SFH among the P-SFH of previous reception and change counting and change counting with S-SFH among the P-SFH that is included in current reception and compare, and whether definite S-SFH changes counting and increase.If confirm that in step 405 S-SFH changes counting and do not increase as yet, then MS gets into step 409.
On the contrary, if confirm that in step 405 S-SFH changes counting and increases, then MS gets into step 407, and changes at least one SPx that bitmap identification is upgraded through S-SFH.That is, S-SFH changes the renewal of at least one SPx of increase indication of counting.So the increase that changes counting through S-SFH recognizes that the MS of the renewal of at least one SPx confirms that through the S-SFH change bitmap that is included among the P-SFH which SPx is updated.At this moment, realize changing the SPx that the bitmap indication is upgraded, so that the value of renewal is switched or be set to indicate in the position corresponding with the SPx that upgrades through S-SFH with such scheme.Under the situation of handover scheme, MS compares the bit position that has switched through identification with the S-SFH change bitmap among the P-SFH that is included in previous reception and confirms that which SPx is updated.On the other hand, under the situation of the scheme of the value that is set to indicate renewal, MS confirms that through the bit position that identification is set to corresponding value (for example, ' 1 ') which SPx is updated.
After at least one SPx that identification is upgraded in step 407, MS gets into step 409, and has determined whether to send the not SPx of storage.Confirm not transmission or the not transmission of the SPx of storage through S-SFH schedule information bitmap.In more detail; Whether MS is set to ' 1 ' position and has determined whether to send the not SPx of storage through confirming to exist in the S-SFH schedule information bitmap; And; Sending under the situation of the SPx of storage not, which SPx MS confirms to have sent through being set to ' 1 ' bit position, and confirms whether it has decoded and change the SPx that storage is sent in the state of currency of counting at S-SFH.If in step 409, confirming does not have to send the not SPx of storage, then MS gets into step 413.
On the contrary, in step 409, confirmed to send the not SPx of storage, then MS entering step 411, and decoding SPx and storage are included in the system information among the SPx.At this moment, because can postpone the SPx of application update, so MS did not abandon SPx before upgrading.That is, MS changes the value classification and the storage SPx of counting according to S-SFH.So MS stores at least two system informations, that is, be respectively with S-SFH change the corresponding system information of the currency of counting and with S-SFH change the corresponding system information of the preceding value counted the two.
MS gets into step 413, and confirms whether used the corresponding system configuration of preceding value that changes counting with S-SFH in the current superframe.At this moment, according to example embodiment of the present invention, confirm to use the corresponding system configuration of still not using with S-SFH change counting of preceding value through CTF.On the contrary, according to another exemplary embodiment of the present invention, MS can determine whether to use with S-SFH and change the corresponding system configuration of preceding value of counting and do not use CTF according to the predefine condition.For example; When satisfy S-SFH change counting increase after the transmission of SPx of at least one renewal be done ' N ' inferior or more frequently during condition; Under the situation of using the system configuration corresponding with the currency of S-SFH change counting; At least one SPx that MS upgrades in step 407 identification, and definite next time point that sends at least one SPx that upgrades.And MS confirms it will use the corresponding system configuration of preceding value that changes counting with S-SFH, till at least one SPx that upgrades is sent out ' N ' inferior superframe.At this moment, ' N ' can equal ' 2 ' for SP1 and SP2, and can equal ' 1 ' for SP3.
If in step 413, confirm to have used the corresponding system configuration of preceding value that changes counting with S-SFH, then MS entering step 415, and application changes the corresponding system configuration of counting of preceding value with S-SFH, and executive communication.In other words, MS comes executive communication according to the system configuration that depends on the SPx that before S-SFH change counting increases to currency, receives.
On the other hand; There is not to use the corresponding system configuration of preceding value that changes counting with S-SFH if in step 413, confirm; In other words; If used the corresponding system configuration of currency that changes counting with S-SFH, then MS gets into step 417, and confirms whether it has stored the corresponding whole SPx of currency that change counting with S-SFH.
If in step 417, confirm to have stored the corresponding whole SPx of currency that change counting with S-SFH, then MS entering step 419, and application changes the corresponding system configuration of counting of currency with S-SFH, and executive communication.
On the contrary, in step 417, confirm not have the corresponding whole SPx of currency of storage and S-SFH change counting, then MS gets into step 421, and waits for the corresponding SPx of currency that receives with S-SFH change counting.In other words, MS stops communication, till having stored whole SPx corresponding with the currency of S-SFH change counting.
Fig. 7 explanation is according to the structure of the BS in the system of broadband wireless communication of example embodiment of the present invention.
With reference to Fig. 7, BS comprises system information determiner 502, P-SFH generator 504, S-SFH generator 506, sub-carrier mapped device 508, OFDM modulator 510 and radio frequency (RF) transmitter 512.
System information determiner 502 confirms to offer the system information of MS.That is, system information determiner 502 confirms to be included in the value of the parameter among P-SFH and the S-SFH.This system information is upgraded in the change that system information determiner 502 reflection systems are provided with, and the renewal of system information is offered P-SFH generator 504 and S-SFH generator 506.
More specifically, system information determiner 502 depends on SPx and upgrades or do not upgrade and S-SFH is set and change counting and change bitmap with S-SFH SP, and system information determiner 502 depends on the SPx transmission or do not send and S-SFH schedule information bitmap is set.And system information determiner 502 depends on application and does not still use the corresponding system configuration of counting with the S-SFH change of preceding value and CTF is set.Here, whether use change the criterion of the corresponding system configuration of the preceding value of counting with S-SFH can be according to practical demonstration property embodiment and different.For example; When the MS that satisfy to insert BS received the SPx of update all condition, S-SFH change counting increase after the transmission of SPx of at least one renewal accomplish ' N ' inferior or more frequently condition and from S-SFH change counting increase beginning passed through predetermined quantity superframe condition one of at least the time, system information determiner 502 confirms to use the corresponding system configuration of counting with the S-SFH change of currency.
P-SFH generator 504 produces and comprises that system information, S-SFH change the P-SFH of counting, S-SFH SP change bitmap, S-SFH schedule information bitmap and CTF.Because P-SFH sends through SFH, so P-SFH generator 504 produces P-SFH at the start time point place of superframe.S-SFH generator 506 produces the SPx that comprises system information.Because SPx optionally sent according to their period or the rule of definition, so S-SFH generator 506 produces SPx if transmitting time point arrives.
Sub-carrier mapped device 508 will send signal map to resource.More specifically, sub-carrier mapped device 508 in SFH, shine upon the P-SFH that provides from P-SFH generator 504 and the SPx that provides from S-SFH generator 506 the two.OFDM modulator 510 is a time-domain signal through the conversion of signals that invert fast fourier transformation (IFFT) computing will be mapped to frequency domain, and produces the OFDM code element through inserting Cyclic Prefix (CP).RF transmitter 512 is the RF band signal with OFDM code element up conversion, amplifying signal, and through the antenna transmission amplifying signal.
Fig. 8 explanation is according to the structure of the MS in the system of broadband wireless communication of example embodiment of the present invention.
With reference to Fig. 8, MS comprises RF receiver 602, ofdm demodulator 604, subcarrier de-mapping device 606, P-SFH analyzer 608, S-SFH analyzer 610, SIM system information management device 612 and controller 614.
RF receiver 602 amplifies the RF band signal that receives through antenna, and is baseband signal with RF band signal down conversion.Ofdm demodulator 604 is that unit divides the signal from RF receiver 602 with the OFDM code element, and restores the signal that is mapped to frequency domain through the fast Fourier transform (FFT) computing.Subcarrier de-mapping device 606 arrives the signal of frequency domain with the unit classification map of handling.For example, the unit of processing can be business burst, message etc.
Through the P-SFH that the demodulation sign indicating number receives from BS, P-SFH analyzer 608 obtains system information, and the system information of obtaining is offered SIM system information management device 612.And P-SFH analyzer 608 obtains the parameter that S-SFH changes counting, S-SFH SP change bitmap, S-SFH schedule information bitmap and CTF etc. from P-SFH, and said parameter is offered SIM system information management device 612.Through the SPx that the demodulation sign indicating number receives from BS, S-SFH analyzer 610 obtains system information, and the system information of obtaining is offered SIM system information management device 612.
SIM system information management device 612 is stored the system information that provides from P-SFH analyzer 608 and S-SFH analyzer 610, and system information is offered the operation that controller 614 is used for MS.More specifically, SIM system information management device 612 uses S-SFH to change counting, S-SFH SP change bitmap, S-SFH schedule information bitmap and CTF provides storage to be used for the system information of the system configuration of reflection system current application.Controller 614 controls are used for the function of the operation of MS.More specifically, controller 614 controls are to come executive communication according to the system information that provides from SIM system information management device 612.
The example operation of the SIM system information management device 612 that is used for management system information is described below.SIM system information management device 612 changes the renewal of the increase identification SPx that counts through S-SFH, and passes through the SPx that S-SFH SP changes bitmap identification renewal.If the SPx that upgrades is identified, then SIM system information management device 612 has determined whether to send the not SPx of storage through S-SFH schedule information bitmap.If sent the not SPx of storage, SIM system information management device 612 control S-SFH analyzers 610 SPx that decodes then.And, if the system information the SPx that is included in renewal is provided from S-SFH analyzer 61, SIM system information management device 612 storing system informations then.At this moment, because can postpone the SPx of application update, so MS did not abandon SPx before upgrading.In more detail; At least two system informations of SIM system information management device 612 storages; That is, be respectively with S-SFH change the corresponding system information of the currency of counting and with S-SFH change the corresponding system information of the preceding value counted the two, and; According to the system configuration of using, SIM system information management device 612 offers controller 614 with the system information of correspondence.In more detailed description; SIM system information management device 612 uses the CTF that provides from P-SFH analyzer 608 to confirm to have used and has still used with S-SFH with the corresponding system configuration of preceding value that S-SFH changes counting and changes the corresponding system configuration of counting of currency, and the system information that will depend on the system configuration of application offers controller 614.Yet according to another exemplary embodiment of the present invention, SIM system information management device 612 can determine whether to use with S-SFH and change the corresponding system configuration of preceding value of counting and do not use CTF according to the predefine condition.For example; When satisfy S-SFH change counting increase after the transmission of SPx of at least one renewal be done ' N ' inferior or more frequently during condition; Under the situation of using the system configuration corresponding with the currency of S-SFH change counting; SIM system information management device 612 changes at least one SPx that bitmap identification is upgraded through S-SFH SP, and confirms to send next time point of at least one SPx that upgrades.And SIM system information management device 612 is confirmed it will use the corresponding system configuration of preceding value that changes counting with S-SFH, till at least one SPx that upgrades is sent out ' N ' inferior superframe.At this moment, ' N ' can equal ' 2 ' for SP1 and SP2, and can equal ' 1 ' for SP3.
Through the time point of the system information of notice MS application update in system of broadband wireless communication, example embodiment of the present invention can minimize the attendant exclusion state that is caused by receiving system information not.And example embodiment of the present invention provides permission particularly in idle pulley, sleep pattern etc., to suspend and the MS of restoring communication recognizes the change of system information and knows the effective ways of the time point of using the system information that changes.
Though illustrate and describe the present invention with reference to its particular exemplary embodiment; But it will be apparent to those skilled in the art that and to carry out various changes in form and details here and do not deviate from the spirit and scope of the present invention that limit accompanying claims and equivalent thereof.

Claims (17)

1. the method for operation of the base station (BS) in the wireless communication system, this method comprises:
Determine whether to use the corresponding system configuration of preceding value of the change counting that changes with renewal according to system information;
When using the system configuration corresponding with the preceding value that changes counting, the parameter of the system configuration that expression is used is set to first value;
When using the system configuration corresponding with the currency that changes counting, this parameter is set to second value; And
Transmission comprises that secondary superframe head (S-SFH) changes the main superframe head (P-SFH) of counting and being set to this parameter of first value or second value.
2. the method for claim 1 further comprises:
(SP) is updated if at least one height of secondary superframe head (S-SFH) divides into groups, and then increases and should change counting;
Change at least one corresponding of the change bitmap of at least one SP be used for discerning renewal with at least one SP that upgrades; And
Transmission comprises the P-SFH of this change counting and this change bitmap.
3. method as claimed in claim 2 further comprises:
Superframe head (SFH) through carrying the P-SFH that comprises this change counting and this change bitmap is sent at least one SP that upgrades.
4. method as claimed in claim 2 further comprises:
Begin to send at least one SP that upgrades at the P-SFH that comprises this change counting and this change bitmap from transmission through after at least one superframe.
5. the method for claim 1 further comprises:
If a plurality of SP in the middle of the SP of S-SFH are updated, then increase this S-SFH and change counting;
Change a plurality of corresponding of the change bitmap of at least one SP be used for discerning renewal with these a plurality of SP;
Transmission comprises the P-SFH of this change counting and this change bitmap; And
On a plurality of superframes, send these a plurality of SP, every superframe sends one.
6. method as claimed in claim 5 further comprises:
After the transmission of accomplishing these a plurality of SP, this parameter is set to second value; And
Transmission comprises the P-SFH of this parameter that is set to second value.
7. the method for claim 1, the wherein said corresponding system configuration of using with this change counting of preceding value that determines whether comprise, when satisfying following at least one, confirms to use and the corresponding system configuration of currency that this change is counted:
The mobile radio station (MS) that inserts BS has received the condition of the SPx of update all,
' N ' inferior condition is accomplished in the transmission of the SPx of at least one renewal after this change counting increases, and
Change counting from S-SFH and increase the condition that the superframe of predetermined quantity has been passed through in beginning.
8. the device of the base station (BS) of a method that is configured to realize one of claim 1 to 7.
9. the method for operation of the mobile radio station (MS) in the wireless communication system, this method comprises:
Confirm value and the value of the change counting that changes according to the renewal of system information of the parameter of the system configuration that expression is used, wherein this parameter is included in the main superframe head (P-SFH) through superframe head (SFH) reception with this changes counting;
When the value of this parameter equals first value, use the corresponding system configuration executive communication of preceding value that changes counting with this; And
When the value of this parameter equals second value, use the corresponding system configuration executive communication of currency that changes counting with this.
10. method as claimed in claim 9 further comprises:
If receive a sub-packet (SP) of secondary superframe head (S-SFH), said SP then decodes;
The value that changes counting according to S-SFH is classified SP; And
Store said SP.
11. method as claimed in claim 10 further comprises:
When the value of this change counting in being included in P-SFH increases, use the change bitmap that is included among the P-SFH to confirm at least one SP of the renewal among the SP of S-SFH; And
Schedule information bitmap through being included among the P-SFH confirms whether at least one SP of this renewal is sent out.
12. method as claimed in claim 9 further comprises:
When the value of this parameter equals second value, determine whether to have stored the corresponding whole SP of currency that change counting with secondary superframe head (S-SFH); And
When not having storage and S-SFH to change the corresponding whole SP of the currency of counting, stop communication, till having stored the corresponding whole SP of the currency counted with this S-SFH change.
13. the device of the mobile radio station (MS) of a method that is configured to realize one of claim 9 to 12.
14. the method for operation of the mobile radio station (MS) in the wireless communication system, this method comprises:
Confirm the change counting according to the renewal change of system information, wherein this change counting is included in the main superframe head (P-SFH) that receives through superframe head (SFH);
When the value that changes counting increases, use the change bitmap that is included among the P-SFH to confirm at least one SP of the renewal among the SP of secondary superframe head (S-SFH);
Confirm the time point of at least one SP of the said renewal of transmission;
Use the time point that sends said SP to confirm to use the superframe of the system configuration corresponding with the currency that changes counting; And
If the superframe of confirming arrives, then use and the corresponding system configuration executive communication of currency that changes counting.
15. method as claimed in claim 14 further comprises:
If receive the SP of S-SFH, said SP then decodes;
Value according to changing counting is classified said SP; And
Store said SP.
16. method as claimed in claim 14, the superframe of the system configuration that wherein said definite application is corresponding with the currency that changes counting comprises:
At at least one SP of said renewal is under the situation of SP1 or SP2, will accomplish next superframe of superframe of twice transmission of SP1 or SP2 after increasing and confirm as the superframe of using the corresponding system configuration of the currency counted with change changing counting; And
At at least one SP of said renewal is under the situation of SP3, will after changing the counting increase, accomplish next superframe of the superframe that once sends of SP3 and confirm as the superframe of using the system configuration corresponding with the currency that changes counting.
17. the device of the mobile radio station (MS) of a method that is configured to realize one of claim 14 to 16.
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