CN102577590B

CN102577590B - The apparatus and method of transmitting/receiving system information in a broadband wireless communication system

Info

Publication number: CN102577590B
Application number: CN201080046461.2A
Authority: CN
Inventors: 元钟衒; 薛志允; 李美贤; 李斗熙
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2009-10-15
Filing date: 2010-10-15
Publication date: 2016-07-06
Anticipated expiration: 2030-10-15
Also published as: JP5794995B2; CN102577590A; JP2013509018A; KR101636399B1; KR20110041376A

Abstract

The apparatus and method of a kind of information of transmitting/receiving system in a broadband wireless communication system are provided.The operation of the base station (BS) in system of broadband wireless communication comprises determining whether that the secondary superframe head (S-SFH) changed that updates applied with according to system information changes the system configuration that the preceding value counted is corresponding；When the system configuration that application is corresponding with the preceding value of S-SFH change counting, would indicate that the parameter that the system of application configures is set to the first value；When the system configuration that application is corresponding with the currency of S-SFH change counting, this parameter is set to the second value；And transmission includes S-SFH and changes the main superframe head (P-SFH) of this parameter counting and being set to the first value or the second value.

Description

The apparatus and method of transmitting/receiving system information in a broadband wireless communication system

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 transmitting/receiving system information in a broadband wireless communication system.

Background technology

At present, mobile communication system just surmounts voice for main communication to provide various service in evolution, such as broadcast, multimedia video, Multimedia Message etc..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, IEEE802.20 Ultra-Mobile Broadband (UMB) system, IEEE802.16m system etc..

In order to support high data transmission bauds in mobile communication system, introduce various transmission technology, such as use multiaerial system, mixed automatic repeat request (HARQ), adaptive modulation and coding (AMC) etc..In order to manage these transmission technologys, base station (BS) needs to send substantial amounts of system information to multiple user's movement stations (MS).System information includes user MS for performing network and the cell information that mobile communication must be known in community.Such as, this information can include the information etc. of the parameter etc. on the bandwidth information of community, the configuration information of physical channel, upper strata, and the information of the various transmission technologys supported in community, for instance, the quantity of transmission antenna, the information of multiple antennas, HARQ relevant information, modulation scheme information etc..

According to the IEEE802.16e standard as one of wireless communication standard, send system information with the form of main superframe head (P-SFH) and secondary superframe head (S-SFH).S-SFH is divided into subgroup 1 (SP1), SP2 and SP3.SP1, SP2 and SP3 the transmission period can be different from each other.P-SFH includes the information and its size that notify whether send S-SFH in the same number of frames sending SP.And, P-SFH uses S-SFH to change counting (S-SFHchangecount) and S-SFHSP changes bitmap (S-SFHSPchangebitmap) and represents the change of system information.P-SFH uses S-SFH schedule information bitmap notifies to send which SP in same number of frames.

S-SFH changes counting and is mapped to the SP of transmission.Such as, when S-SFH changes counting equal to ' N ', SP1, SP2 and the SP3 of transmission includes the ' systematic parameter of the state of S-SFH change counting=N '.Thus, S-SFH changes the change of counting and means that at least one SP of S-SFH is updated.S-SFHSP changes bitmap and represents which SP has changed by.And, each SPx includes indicating the offset parameter of two of the skew using initial superframe of the SP wherein changed, and indicate when to apply by offset parameter change newly configured.Thus, the new parameter after receiving new SPx, in the superframe that MS application is indicated by the offset parameter in SPx.

Change counting including the S-SFH in P-SFH and S-SFHSP change bitmap instruction system information has been updated and which SP is updated.But, although MS identifies the renewal of system information and the SPx of renewal by receiving P-SFH, when MS fails to receive, due to channel degradation, the mode of operation etc. of sleep pattern, the SPx updated, MS must stop communication, because it is unaware of the time point of the SPx that application updates.Thus, MS cannot perform communication, until being successfully decoded SPx.It is then desired to a kind of replacement so that even if MS fails to receive the SPx updated, it is also possible to perform communication until applying the system information updated by the time point of the SPx of identification application renewal.

Summary of the invention

Solution

It is an aspect of the invention to solve at least the above and/or deficiency and at least advantages below is provided.Thus, one aspect of the present invention is in that, it is provided that the apparatus and method of the time point of the system information that notice application updates in a broadband wireless communication system.

Another aspect of the present invention is in that, it is provided that the information element (IE) sent by each superframe in a broadband wireless communication system notifies the apparatus and method of the time point of the system information of application renewal.

Another aspect of the present invention is in that, it is provided that update the apparatus and method of the subgroup (SP) of multiple pieces of system information in a broadband wireless communication system simultaneously.

By providing the apparatus and method of transmitting/receiving system information in a broadband wireless communication system to realize aspects above.

According to an aspect of the present invention, it is provided that the operational approach of the base station (BS) in a kind of system of broadband wireless communication.The method comprises determining whether that the secondary superframe head (S-SFH) changed that updates applied with according to system information changes the system configuration that the preceding value counted is corresponding；When the system configuration that application is corresponding with the preceding value of S-SFH change counting, would indicate that the parameter that the system of application configures is set to the first value；When the system configuration that application is corresponding with the currency of S-SFH change counting, this parameter is set to the second value；And transmission includes S-SFH and changes the main superframe head (P-SFH) of this parameter counting and being set to the first value or the second value.

According to another aspect of the present invention, it is provided that the operational approach of the movement station (MS) in a kind of system of broadband wireless communication.The method includes: identifying the value of the parameter of the system configuration of expression application and the value updating the S-SFH change counting changed according to system information, this parameter and S-SFH are changed counting and include in the P-SFH received by SFH；When the value of this parameter is equal to the first value, applies the system configuration that the preceding value changing counting with S-SFH is corresponding, and perform communication；And when the value of this parameter is equal to the second value, applies the system configuration that the currency changing counting with S-SFH is corresponding, and perform communication.

According to another aspect of the present invention, it is provided that the operational approach of the MS in a kind of system of broadband wireless communication.The method includes: identifying that the S-SFH changed that updates according to system information changes counting, S-SFH is changed counting and includes in the P-SFH received by SFH；When the value that S-SFH changes counting increases, the S-SFHSP including in P-SFH is used to change bitmap to identify at least one SP of the renewal of S-SFH；Determine the time point of at least one SP sending described renewal；The time point sending described SP is used to determine the superframe applying system configuration corresponding to the currency changing counting with S-SFH；And if it is determined that superframe arrive, then application changes the system corresponding to currency of counting and configures with S-SFH, and performs communication.

According to a further aspect of the invention, it is provided that the BS device in a kind of system of broadband wireless communication.This device includes determiner and transmitter.Determiner determines whether that the S-SFH changed that updates applied with according to system information changes the system configuration that the preceding value counted is corresponding.Afterwards, when the system configuration that application is corresponding with the preceding value of S-SFH change counting, it is determined that device would indicate that the parameter of the system configuration of application is set to the first value.When the system configuration that application is corresponding with the currency of S-SFH change counting, it is determined that this parameter is set to the second value by device.Transmitter transmission includes S-SFH and changes the P-SFH of this parameter counting and being set to the first value or the second value.

According to another aspect of the present invention, it is provided that the MS device in a kind of system of broadband wireless communication.This device includes manager and controller.Manager identification represents that the value of the parameter of the system configuration of application and the S-SFH changed that updates according to system information change the value of counting.This parameter and S-SFH are changed counting and include in the P-SFH received by SFH.When the value of this parameter is equal to the first value, controller application changes the system configuration that the preceding value counted is corresponding with S-SFH, and performs communication.When the value of this parameter is equal to the second value, controller application changes the system configuration that the currency counted is corresponding with S-SFH, and performs communication.

According to a further aspect of the invention, it is provided that the MS device in a kind of system of broadband wireless communication.This device includes manager and controller.Manager identification changes counting according to the S-SFH changed that updates of system information.S-SFH is changed counting and includes in the P-SFH received by SFH.When the value that S-SFH changes counting increases, manager uses the S-SFHSP including in P-SFH to change bitmap to identify at least one SP of the renewal of S-SFH, determine the time point of at least one SP sending described renewal, and use the time point sending described SP to determine the superframe applying system configuration corresponding to the currency changing counting with S-SFH.If it is determined that superframe arrive, then controller application changes the system corresponding to currency of counting and configures with S-SFH, and performs communication.

Disclosing one exemplary embodiment described further below of the present invention in conjunction with the drawings, those skilled in the art be will become apparent from by other aspects of the present invention, advantage and marked feature.

Accompanying drawing explanation

Being described below in conjunction with the drawings, the above and other aspect of the particular exemplary embodiment of the present invention, feature and advantage will become apparent from, wherein:

Fig. 1 is the figure that the frame structure in system of broadband wireless communication according to an exemplary embodiment of the invention is described；

Fig. 2 to Fig. 4 is the figure of the time point that the transmission system information in system of broadband wireless communication according to an exemplary embodiment of the invention is described；

Fig. 5 illustrates the flow chart that the system information of the base station (BS) in system of broadband wireless communication according to an exemplary embodiment of the invention sends process；

Fig. 6 is the flow chart of the system information acquisition process that the movement station (MS) in system of broadband wireless communication according to an exemplary embodiment of the invention is described；

Fig. 7 is the block diagram of the structure that the BS in system of broadband wireless communication according to an exemplary embodiment of the invention is described；And

Fig. 8 is the block diagram of the structure that the MS in system of broadband wireless communication according to an exemplary embodiment of the invention is described.

Run through accompanying drawing, it shall be noted that same reference numeral is used for referring to same or analogous element, feature and structure.

Detailed description of the invention

There is provided the following description with reference to accompanying drawing to help to understand the one exemplary embodiment of the present invention limited by claims and equivalent thereof comprehensively.It includes various detail to contribute to understanding but to be regarded as be only exemplary for these.Therefore, it will be appreciated by those of ordinary skill in the art that and each embodiment described here can be made various changes and modifications without departing from the spirit and scope of the present invention.Additionally, for clear and succinct event, the explanation of known function and structure is removed.

The term and the words that use in following description and claims are not limited to dictionary meanings, but, only it is used for making the understanding of the present invention to know with consistent by inventor.Therefore, it will be apparent to those skilled in the art that the purpose that the following description of the one exemplary embodiment providing the present invention is merely to illustrate, and be not intended to limit the purpose of the present invention limited by claims and equivalent thereof.

Should be appreciated that singulative " ", " one " and " being somebody's turn to do " include plural form, unless outside context clearly represents.It is therefoie, for example, referring to of " assembly surface " is included referring to one or more such surface.

Term " substantially " means that described feature, parameter or value need not accurately obtain, but deviation or change can occur in quantity, limit and well known to a person skilled in the art other factors including such as tolerance, measurement error, certainty of measurement, and this will not get rid of the effect and feature that are intended to provide.

The exemplary technique of the time point of the system information that the application of notice in a broadband wireless communication system according to the present invention updates is described below.It is described below and carries out with reference to OFDM (OFDM)/OFDM (OFDMA) wireless communication system, but it is also suitable for other wireless communication systems.

Fig. 1 illustrates the frame structure in system of broadband wireless communication according to an exemplary embodiment of the invention.

With reference to Fig. 1, superframe 100 is divided into multiple frame 110, and frame 110 is divided into the subframe 120 including multiple OFDM symbol 130.First subframe 120 of the first frame 110 in superframe 100 includes superframe head (SFH) 140.SFH140 includes synchronizing channel, CCCH etc..SFH140 is the region performing the necessary system information of communication for sending movement station (MS) with corresponding base station (BS).System information is divided into main superframe head (P-SFH) and secondary superframe head (S-SFH).S-SFH is divided into subgroup 1 (SP1), SP2 and SP3.For convenience of description, below SP1, SP2 and SP3 are referred to as ' SPx '.

S-SFH is always included in SFH140, and SPx is selectively included in SFH140.Such as, each SPx sent according to the corresponding period.When SPx includes in SFH140, SPx is mapped to the continuous print resource being positioned at the resource occupied by P-SFH.Then, MS can use the SPx dimension information included in the P-SFH SPx to extract in frame.P-SFH and each SPx distinguishes according to the kind of the parameter included.The structure of the actual parameter of each information element (IE) can be different according to the intention of user.Such as, table 1 below illustrates the parameter including in P-SFH and SPx to table 4.In more detail, table 1 below illustrates the parameter including in P-SFH.Table 2 below illustrates the parameter including in SP1, and Table 3 below illustrates the parameter including in SP2, and table 4 below illustrates the parameter including in SP3.

[table 1]

[table 2]

[table 3]

[table 4]

BS according to an exemplary embodiment of the invention includes configuration transition mark (CTF) in P-SFH.CTF indicates that application or does not apply the parameter of system configuration corresponding to the currency changing counting with S-SFH.CTF defines in table 5 below.CTF can be different names in actual embodiment.Such as, CTF can be referred to as S-SFH application and keep designator.

[table 5]

When the currency that S-SFH changes counting is equal to ' 0 ' equal to ' N ' and CTF, MS application changes system configuration corresponding to counting (N) (that is, the system depending on the system information being currently transmitted configures) with S-SFH.On the contrary, when the currency that S-SFH changes counting is equal to ' 1 ' equal to ' N ' and CTF, MS application changes system configuration corresponding to counting (N-1) (that is, depending on the system configuration of the system information sent when S-SFH changes counting equal to ' N-1 ') with S-SFH.

Owing to P-SFH includes CTF, the following transmission/reception performing system information.

Fig. 2 to Fig. 4 illustrates the time point of the transmission system information in system of broadband wireless communication according to an exemplary embodiment of the invention.Fig. 2 illustrates to send the situation together with increasing the SPx that S-SFH change counting updates.

With reference to Fig. 2, during the persistent period 1211, S-SFH changes counting equal to ' N ', and S-SFHSP changes bitmap equal to ' 0b000 '.Now, because CTF is equal to ' 0 ', so application depends on the system configuration of SPx corresponding to the currency changing counting with S-SFH.Thus, the MS of newly entering BS receives currently transmitted SPx, and applies the system configuration of the SPx depending on reception.

During the persistent period 2212, due to the renewal of SP2, S-SFH changes counting and becomes ' N+1 ', and S-SFHSP changes bitmap and becomes ' 0b010 '.Here, the second of S-SFHSP change bitmap changes into ' 1 ' according to the renewal of SP2 is the result of the rule according to the renewal notifying SPx.Here, this rule is switching (toggle) and corresponding for the SPx position updated and the value with corresponding for the SPx position of renewal is set to one of ' 1 '.Because S-SFH changes counting and increases, so MS recognizes that system information is updated.Changing bitmap by S-SFHSP, MS determines that SP2 is updated.And, SP2 is sent by the S-SFH frame changing time point when counting increases, thus, the system information updated by decoding SP2, MS to obtain, and store the system information of acquisition.But, because CTF is equal to ' 1 ', so the system information when system information of current application changes counting equal to ' N ' in accordance with S-SFH.Thus, the SP2 of MS not application memory, but the SP2 received during being reflected in the persistent period 1211 in system configures.

During the persistent period 3213, system information is not updated, but CTF changes into ' 0 '.Thus, MS recognizes that the system depending on the system information changed during the persistent period 2212 configuration is employed, and is applied in the SP2 receiving and storing during the persistent period 2212.In Fig. 2, during the persistent period 3213, CTF changes into ' 0 ', but S-SFHSP changes bitmap and still maintains ' 0b010 '.But, according to an exemplary embodiment of the invention, S-SFHSP changes bitmap can be initialized to ' 0b000 ' while CTF changes into ' 0 '.

In one exemplary embodiment shown in Fig. 2, the time point application when CTF changes into ' 0 ' changes the system configuration that the currency counted is corresponding with S-SFH.But, according to another exemplary embodiment of the present invention, it is possible to from CTF change into ' 0 ' time time point begin to pass through multiple superframe after application change the system corresponding to currency of counting with S-SFH and configure, for instance, from next superframe.

Fig. 3 illustrates to be sent in the situation increasing the SPx updated after S-SFH change counting.With reference to Fig. 3, during the persistent period 1221, S-SFH changes counting equal to ' N ', and S-SFHSP changes bitmap equal to ' 0b000 '.Now, because CTF is equal to ' 0 ', so application depends on the system configuration of SPx corresponding to the currency changing counting with S-SFH.Thus, the MS of newly entering BS receives currently transmitted SPx, and applies the system configuration of the SPx depending on reception.

During the persistent period 2222, due to the renewal of SP2, S-SFH changes counting and becomes ' N+1 ', and S-SFHSP changes bitmap and becomes ' 0b010 '.It is the result of the rule according to the renewal notifying SPx that the second of S-SFHSP change bitmap changes into ' 1 ' according to the renewal of SP2.Here, this rule is switching and corresponding for the SPx position updated and the value with corresponding for the SPx position of renewal is set to one of ' 1 '.Because S-SFH changes counting and increases, so MS recognizes that system information is updated.Changing bitmap by S-SFHSP, MS determines that SP2 is updated.But, it being different from the situation of Fig. 2, the SP2 of renewal sends not by the S-SFH frame changing time point when counting increases.But, because CTF is equal to ' 1 ', so the system information of current application is in accordance with the system information when S-SFH changes counting equal to ' N '.Thus, no matter reception does not still receive SP2, MS is reflected in the SP2 received during the persistent period 1221 in system configures.After the change changing counting and S-SFHSP change bitmap from S-SFH begins to pass through several superframe, send SP2.Thus, the system information updated by decoding SP2, MS to obtain, and store the system information of acquisition.Now, because CTF is maintained ' 1 ', so the SP2 of MS not application memory, but the SP2 received during being applied in the persistent period 1221.

During the persistent period 3223, system information is not updated, but CTF changes into ' 0 '.Thus, MS recognizes that the system depending on the system information changed during the persistent period 2222 configuration is employed, and is applied in the SP2 receiving and storing during the persistent period 2222.In Fig. 3, during the persistent period 3223, CTF changes into ' 0 ', but S-SFHSP changes bitmap and still maintains ' 0b010 '.But, another one exemplary embodiment according to the present invention, S-SFHSP changes bitmap can be initialized to ' 0b000 ' while CTF changes into ' 0 '.

In one exemplary embodiment shown in Fig. 3, the time point application when CTF changes into ' 0 ' changes the system configuration that the currency counted is corresponding with S-SFH.But, according to another exemplary embodiment of the present invention, it is possible to from CTF change into ' 0 ' time time point begin to pass through multiple superframe after application change the system corresponding to currency of counting with S-SFH and configure, for instance, from next superframe.

Fig. 4 illustrates to be sent in the situation increasing the SPx updated after S-SFH change counting.With reference to Fig. 4, during the persistent period 1231, S-SFH changes counting equal to ' N ', and S-SFHSP changes bitmap equal to ' 0b000 '.Now, because CTF is equal to ' 0 ', so application depends on the system configuration of SPx corresponding to the currency changing counting with S-SFH.Thus, the MS of newly entering BS receives currently transmitted SPx, and applies the system configuration of the SPx depending on reception.

During the persistent period 2232, due to the change of SP1, SP2 and SP3, S-SFH changes counting and becomes ' N+1 ', and S-SFHSP changes bitmap and becomes ' 0b111 '.Here, first, second and the 3rd renewal according to SP1, SP2 and SP3 of S-SFHSP change bitmap changes into ' 1 ' is the result of the rule according to the renewal notifying SPx.Here, this rule is switching and corresponding for the SPx position updated and the value with corresponding for the SPx position of renewal is set to one of ' 1 '.Because S-SFH changes counting and increases, so MS recognizes that system information is updated.Changing bitmap by S-SFHSP, MS determines that SP1, SP2 and SP3 are updated.Now, only SP1 is sent by the S-SFH frame changing time point when counting increases, and SP2 and SP3 is not sent.But, because CTF is equal to ' 1 ', so the system information of current application is in accordance with the system information when S-SFH changes counting equal to ' N '.Thus, MS decodes and stores SP1, and does not still receive SP2 and SP3, MS regardless of reception and be reflected in the SPx received during the persistent period 1231 in system configures.After the change changing counting and S-SFHSP change bitmap from S-SFH begins to pass through several superframe, send SP2 and SP3 by definite sequence.Thus, the system information updated by decoding SP2 and SP3, MS to obtain, and store the system information of acquisition.Now, because CTF is maintained ' 1 ', so the SPx of MS not application memory, but the SPx received during being applied in the persistent period 1231.

During the persistent period 3233, system information is not updated, but CTF changes into ' 0 '.Thus, MS recognizes that the system depending on the system information changed during the persistent period 2232 configuration is employed, and is applied in the SP2 receiving and storing during the persistent period 2232.In Fig. 4, during the persistent period 3233, CTF changes into ' 0 ', but S-SFHSP changes bitmap and still maintains ' 0b111 '.But, according to an exemplary embodiment of the invention, S-SFHSP changes bitmap can be initialized to ' 0b000 ' while CTF changes into ' 0 '.

In the exemplary embodiment of figure 4, the time point application when CTF changes into ' 0 ' changes the system configuration that the currency counted is corresponding with S-SFH.But, according to another exemplary embodiment of the present invention, it is possible to from CTF change into ' 0 ' time time point begin to pass through multiple superframe after application change the system corresponding to currency of counting with S-SFH and configure, for instance, from next superframe.

With reference in Fig. 2 to Fig. 4 process described, BS determines that during predetermined lasting time application changes the system configuration that the preceding value counted is corresponding with S-SFH.Here, if the criterion applying system configuration corresponding to the preceding value changing counting from S-SFH can be different according to the intention of user.

For example, it is possible to the SPx whether MS depending on access BS receives update all determines whether to apply the system configuration that the preceding value changing counting with S-SFH is corresponding.In this situation, BS can use the system that the distribution monitoring the persistent period of sleep pattern or idle pulley MS determines that with the time point of the SPx that transmission updates application does not still apply the preceding value changing counting with S-SFH corresponding to configure.Thus, if all MS has the monitoring persistent period in the time point of the SPx of at least one transmission renewal, then BS determines that application changes system corresponding to the currency counted and configures with S-SFH.

As another example, when the SPx of at least one renewal does not count and changes, with S-SFHSP, the superframe place transmission that bitmap changes in S-SFH change, it is possible to whether the transmission depending on the SPx of this at least one renewal is complete the system configuration determining whether that application is corresponding with the preceding value of S-SFH change counting.In this situation, after being sent completely of SPx of this at least one renewal, BS determines that the system that application changes the currency of counting corresponding with S-SFH configures.In more detail, from next superframe after being sent completely once or twice of SPx updated, BS can apply the system configuration that the currency changing counting with S-SFH is corresponding.Now, BS may rely on the kind of SPx and differently applies the number of times of transmission.Such as, when SP1 or SP2 changes, after being sent completely once or twice of SP1 or SP2 updated, BS can apply the system configuration that the currency changing counting with S-SFH is corresponding.When SP3 changes, after the transmission once of the SP3 updated, BS can apply the system configuration that the currency changing counting with S-SFH is corresponding.Now, when multiple SPx change, BS is expected to the point of the Applicative time the latest place application depended in the middle of the Applicative time point of each SPx and changes the system configuration that the currency counted is corresponding with S-SFH.

As another example, it is possible to depend on whether that changing counting from S-SFH increases the system configuration that the superframe starting to pass through predetermined quantity determines whether that application is corresponding with the preceding value of S-SFH change counting.In this situation, if not yet through the superframe of predetermined quantity, then BS determines that the system applying the preceding value changing counting with S-SFH corresponding configures.

As another example, it is possible to change, at S-SFH, the system configuration that while counting increases, application is corresponding with the currency of S-SFH change counting.Now, BS starts to apply the system configuration that the currency changing counting with S-SFH is corresponding from the S-SFH superframe changing counting increase.Thus, CTF is set to ' 0 ' by BS.

As set forth above, it is possible to determine the time point applying system configuration corresponding to the currency changing counting with S-SFH according to various schemes.Under any circumstance, MS is equally possible judges that application changes the time point of system configuration corresponding to the currency of counting with S-SFH voluntarily, the scheme being sent completely once or twice or being not fully complete of the SPx depending on renewal in the middle of one exemplary embodiment as previously mentioned, depend on through or not yet through the scheme of the superframe of predetermined quantity, change the scheme etc. applied while counting increases at S-SFH.In this situation, MS can change system configuration corresponding to the currency counted without with reference to CTF in the application of the MS time point judged voluntarily with S-SFH.

Such as, the scheme depending on the SPx sending or not sending renewal is described below.Because SPx (that is, SP1, SP2 and SP3) each sent by the interval of predetermined superframe according to the respective period, MS can use the period that sends of hyperframe number and each SPx to determine the superframe of the SPx receiving correspondence wherein.Then, MS recognizes the SPx of change by S-SFHSP change bitmap, it is determined that sends the time point of SPx, and starts, from next superframe of the superframe receiving SPx, the system configuration that application is corresponding with the currency that S-SFH change counts.In more detail, when S-SFHSP changes bitmap equal to ' 0b010 ', MS changes bitmap by S-SFHSP and determines that SP2 is updated.And, MS uses the period that sends of hyperframe number and SP2 to determine the future time point sending SP2, and starts to apply the system configuration that the currency changing counting with the S-SFH of the SP2 that reflection updates is corresponding from next superframe of the superframe being sent completely for twice of the SP2 updated.

With reference to transmitted as mentioned above/receive the operation of BS and MS of system information and structure is described below.

Fig. 5 illustrates that the system information of the BS in system of broadband wireless communication according to an exemplary embodiment of the invention sends process.

With reference to Fig. 5, in step 301, BS determines whether the start time point of superframe has arrived at.In other words, BS determines whether the time point needing to send SFH has arrived at.

If determining that in step 301 start time point of superframe has arrived at, then BS enters step 303, and determines whether to be necessary to update system information.Here, system information includes P-SFH and S-SFH, and S-SFH is divided into multiple SPx.Such as, the renewal of completion system information is carried out by the change etc. of sub-channelizing, range finding and system setting (such as mapping version).That is, BS determines whether that the change owing to system is arranged needs to update by the SFH SPx sent.

If determining in step 303 and needing to update system information, then BS enters step 305, and updates the SPx of correspondence.That is, BS updates the SPx of the parameter including the system setting that reflection changes.At this point it is possible to update one or more SPx.On the contrary, if determining in step 303 and need not updating system information, then BS enters step 309.

Updating in step 305 after SPx, BS enters step 307, and changes S-SFH change counting and S-SFHSP change bitmap.S-SFH changes counting and S-SFHSP changes bitmap and is included in the parameter in P-SFH.S-SFH changes counting and represents the renewal of SPx or do not update, and S-SFHSP changes the SPx that bitmap instruction updates.S-SFH changes the value of counting and increases along with the renewal of SPx, and is only increased by the number of times of renewal, regardless of the quantity of the SPx updated.It is the bit stream with the length the same with the quantity of SPx used in system that S-SFHSP changes bitmap, and, when SPx updates, it is changed with the place value of corresponding for the SPx position of renewal.

After changing S-SFH change counting and S-SFHSP change bitmap in step 307, BS enters step 309, and determines whether to apply the system configuration corresponding with the preceding value of S-SFH change counting.Here, if the criterion applying system configuration corresponding to the preceding value changing counting from S-SFH can be different according to practical demonstration embodiment.Such as, BS has received the condition of the SPx of update all, has changed the transmission of SPx of at least one renewal after counting increases at S-SFH and be complete that ' N ' secondary or more condition and change counting from S-SFH and increase the system that at least one of condition of the superframe starting to pass through predetermined quantity determine whether that application changes the preceding value of counting corresponding with S-SFH and configure according to the MS accessing BS.That is, when meeting at least one described condition, BS determines that the system applying the currency changing counting with S-SFH corresponding configures.

If determining in a step 309 and will applying the system configuration that the preceding value changing counting with S-SFH is corresponding, then BS enters step 311, and would indicate that the parameter (such as, CTF or S-SFH application keeps designator) of the system configuration of application is set to ' 1 '.On the contrary, if determining in a step 309 and will applying the system configuration that the currency changing counting with S-SFH is corresponding, then BS enters step 313, and CTF is set to ' 0 '.Designator is kept to be included in P-SFH as CTF or the S-SFH application representing the parameter that will apply which system configuration.For convenience of description, below in the present invention, this parameter is called CTF.

Afterwards, BS enters step 315, and determines the need for sending SPx.Such as, each SPx can send according to the period of their own.In this situation, BS identifies the period of each SPx, and determines whether the transmission period arrives.As another example, when updating specific SPx, this specific SPx can send while updating, or can send after beginning to pass through predetermined frame from renewal.When multiple SPx change simultaneously, multiple superframes send the plurality of SPx, send because they cannot pass through a superframe.In this situation, BS determines to be needed to send SPx by definite sequence at each superframe.

If determining in step 315 and there is no need to send SPx, then BS enters step 317, and sends P-SFH by SFH.Here, P-SFH includes S-SFH change counting, S-SFHSP changes bitmap, CTF and S-SFH schedule information bitmap.Now, S-SFH schedule information bitmap is set to represent the value not sending SPx.

On the contrary, if in step 315 it is determine that it is necessary to send SPx, then BS enters step 319, and arranges S-SFH schedule information bitmap.S-SFH schedule information bitmap is the bit stream with the length the same with the quantity of SPx used in system, and, when SPx sends, it is set to ' 1 ' with the place value of corresponding for the SPx position of transmission.That is, BS uses S-SFH schedule information bitmap to produce the SPx SPx sent with correspondence and specifies information, so that MS can decode SPx.

After arranging S-SFH schedule information bitmap in step 319, BS enters step 321, and sends, by PSH, both SPx and P-SFH that the currency changing counting with S-SFH is corresponding.Here, P-SFH includes S-SFH change counting, S-SFHSP changes bitmap, CTF and S-SFH schedule information bitmap.

Fig. 6 illustrates the system information acquisition process of the MS in system of broadband wireless communication according to an exemplary embodiment of the invention.

With reference to Fig. 6, in step 401, MS determines whether the start time point of superframe has arrived at.In other words, MS determines whether the time point needing to receive SFH has arrived at.

If determining that the start time point of superframe has arrived in step 401, then MS enters step 403, and decodes P-SFH.MS because P-SFH encodes with predefined encoding scheme, and received by the predefined position of SFH, so can also decode P-SFH even without independent distribution information.Obtain system information, S-SFH change counting, S-SFHSP change bitmap, S-SFH schedule information bitmap by decoding P-SFH, MS and represent the parameter that the system of application configures.Here, represent that the parameter of the system configuration of application can be referred to as CTF or S-SFH application and keep designator.For convenience of description, below in the present invention, this parameter is called CTF.

After decoding P-SFH, MS enters step 405, and determines that S-SFH changes whether counting increases.In more detail, MS is included within S-SFH in the P-SFH of previous receipt and changes counting and change counting with the S-SFH included in currently received P-SFH and compare, and determines that S-SFH changes whether counting increases.If determining that S-SFH changes counting and not yet increases in step 405, then MS enters step 409.

On the contrary, if determining that S-SFH changes counting and increases in step 405, then MS enters step 407, and changes, by S-SFH, at least one SPx that bitmap identification updates.That is, S-SFH changes the renewal increasing at least one SPx of instruction of counting.Then, recognized by the increase of S-SFH change counting that the MS of the renewal of at least one SPx changes bitmap by the S-SFH being included in P-SFH and determines which SPx is updated.Now, realize changing, by S-SFH, the SPx that bitmap instruction updates with such scheme, so that being switched or be set to indicate that the value of renewal with the position corresponding for SPx updated.When handover scheme, MS by the S-SFH identified and include in the P-SFH that previously receives change bitmap compared with the position of handed over position determine which SPx is updated.On the other hand, when being set to indicate that the scheme of value of renewal, MS is by identifying that the position of the position of the value (such as, ' 1 ') being set to correspondence determines which SPx is updated.

After identifying at least one SPx of renewal in step 407, MS enters step 409, and determines whether to have sent the SPx not stored.Determine the transmission of the SPx not stored by S-SFH schedule information bitmap or do not send.In more detail, MS is determined by S-SFH schedule information bitmap whether existing being set to the position of ' 1 ' and determines whether to have sent the SPx not stored, and, when have sent the SPx not stored, the position of the MS position by being set to ' 1 ' determines to have sent which SPx, and determines if to store in the state of decoded and change counting at S-SFH currency the SPx of transmission.If determining in step 409 and not sending the SPx not stored, then MS enters step 413.

On the contrary, determine in step 409 and have sent the SPx not stored, then MS enters step 411, and decodes SPx and system information that storage includes in SPx.Now, because the SPx that application updates can be postponed, so MS does not abandon SPx before the update.That is, MS classifies according to the S-SFH value changing counting and stores SPx.Then, MS stores at least two system informations, i.e. respectively changes system information corresponding to the currency counted with S-SFH and changes, with S-SFH, both system informations that the preceding value counted is corresponding.

MS enters step 413, and determines whether apply the system configuration that the preceding value changing counting with S-SFH is corresponding in current super frame.Now, according to an exemplary embodiment of the invention, determine that the system configuration that the preceding value changing counting with S-SFH is corresponding is not still applied in application by CTF.On the contrary, according to another exemplary embodiment of the present invention, MS can determine whether to apply system configuration corresponding to the preceding value changing counting with S-SFH according to predefined condition and not use CTF.Such as, change the transmission of SPx of at least one renewal after counting increases at S-SFH be done that ' N ' secondary or during more condition when meeting, when the system configuration that application is corresponding with the currency of S-SFH change counting, MS identifies at least one SPx updated in step 407, and determines the future time point sending at least one SPx updated.And, MS determines that application is changed the system configuration that the preceding value of counting is corresponding by it with S-SFH, until at least one SPx updated is sent the superframe that ' N ' is secondary.Now, ' N ' can be equal to ' 2 ' for SP1 and SP2, and can be equal to ' 1 ' for SP3.

If determining in step 413 and applying the system configuration that the preceding value changing counting with S-SFH is corresponding, then MS enters step 415, and applies the system configuration that the preceding value changing counting with S-SFH is corresponding, and performs communication.In other words, MS performs communication according to the system configuration depending on the SPx received before S-SFH change counting increases to currency.

On the other hand, if determining in step 413 and not applying the system configuration that the preceding value changing counting with S-SFH is corresponding, in other words, if applying the system configuration that the currency changing counting with S-SFH is corresponding, then MS enters step 417, and determines if to store whole SPx that the currency changing counting with S-SFH is corresponding.

If determining in step 417 and storing whole SPx that the currency changing counting with S-SFH is corresponding, then MS enters step 419, and applies the system configuration that the currency changing counting with S-SFH is corresponding, and performs communication.

On the contrary, determine in step 417 and do not store whole SPx corresponding to currency changing counting with S-SFH, then MS enters step 421, and etc. to be received and S-SFH change the SPx that the currency of counting is corresponding.In other words, MS stops communication, until storing whole SPx that the currency changing counting with S-SFH is corresponding.

Fig. 7 illustrates the structure of the BS in system of broadband wireless communication according to an exemplary embodiment of the invention.

System information determiner 502, P-SFH generator 504, S-SFH generator 506, sub-carrier mapped device 508, OFDM manipulator 510 and radio frequency (RF) transmitter 512 is included with reference to Fig. 7, BS.

System information determiner 502 determines the system information that will be supplied to MS.That is, system information determiner 502 determines the value of the parameter included in P-SFH and S-SFH.System information determiner 502 reflects the change that system is arranged, and updates this system information, and the renewal of system information is supplied to P-SFH generator 504 and S-SFH generator 506.

Update more specifically, system information determiner 502 depends on SPx or do not update and S-SFH is set and changes counting and S-SFHSP change bitmap, and system information determiner 502 depends on SPx and sends or do not send and arrange S-SFH schedule information bitmap.And, system information determiner 502 depends on application and does not still apply system configuration corresponding to the preceding value changing counting with S-SFH and arrange CTF.Here, if the criterion applying system configuration corresponding to the preceding value changing counting from S-SFH can be different according to practical demonstration embodiment.Such as, when the MS of the satisfied BS of access has received the condition of the SPx of update all, changed the transmission of SPx of at least one renewal after counting increases at S-SFH and be complete that ' N ' secondary or more condition and when changing, from S-SFH, at least one of condition that counting increases the superframe starting to pass through predetermined quantity, system information determiner 502 determines that the system that application changes the currency of counting corresponding with S-SFH configures.

P-SFH generator 504 produces to include the P-SFH of system information, S-SFH change counting, S-SFHSP change bitmap, S-SFH schedule information bitmap and CTF.Because P-SFH is sent by SFH, so P-SFH generator 504 produces P-SFH at the start time point place of superframe.S-SFH generator 506 produces to include the SPx of system information.Because SPx sends according to the rules selection of themselves period or definition, if so sending time point and arriving, S-SFH generator 506 produces SPx.

Transmission signal is mapped to resource by sub-carrier mapped device 508.More specifically, sub-carrier mapped device 508 maps the P-SFH from P-SFH generator 504 offer and both the SPx from S-SFH generator 506 offer in SFH.The signal that OFDM manipulator 510 will be mapped to frequency domain by fast Flourier inverse transformation (IFFT) computing is converted to time-domain signal, and produces OFDM symbol by inserting Cyclic Prefix (CP).OFDM symbol up conversion is RF band signal by RF transmitter 512, amplifies signal, and is sent the signal amplified by antenna.

Fig. 8 illustrates the structure of the MS in system of broadband wireless communication according to an exemplary embodiment of the invention.

RF receptor 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 is included with reference to Fig. 8, MS.

RF receptor 602 amplifies the RF band signal received by antenna, and is baseband signal by RF band signal down conversion.Ofdm demodulator 604 divides the signal from RF receptor 602 in units of OFDM symbol, and restores, by fast fourier transform (FFT) computing, the signal being mapped to frequency domain.Subcarrier de-mapping device 606 is with the unit classification map that processes to the signal of frequency domain.Such as, the unit of process can be business burst, message etc..

Obtain system information by demodulation and decoding from BS P-SFH, the P-SFH analyzer 608 received, and the system information of acquisition is supplied to SIM system information management device 612.And, P-SFH analyzer 608 obtains S-SFH from P-SFH and changes the parameter of counting, S-SFHSP change bitmap, S-SFH schedule information bitmap and CTF etc., and described parameter is supplied to SIM system information management device 612.Obtain system information by demodulation and decoding from BS SPx, the S-SFH analyzer 610 received, and the system information of acquisition is supplied to SIM system information management device 612.

SIM system information management device 612 stores the system information provided from P-SFH analyzer 608 and S-SFH analyzer 610, and system information is supplied to controller 614 is used for the operation of MS.There is provided storage for the system information of the system configuration of current application in reflection system more specifically, SIM system information management device 612 uses S-SFH to change counting, S-SFHSP changes bitmap, S-SFH schedule information bitmap and CTF.Controller 614 controls the function of the operation for MS.More specifically, controller 614 controls to perform communication according to the system information provided from SIM system information management device 612.

Example operation described below for the SIM system information management device 612 of management system information.SIM system information management device 612 changes the renewal identifying SPx that increases of counting by S-SFH, and changes, by S-SFHSP, the SPx that bitmap identification updates.If the SPx updated is identified, then SIM system information management device 612 determines whether to have sent the SPx not stored by S-SFH schedule information bitmap.If have sent the SPx not stored, then SIM system information management device 612 controls S-SFH analyzer 610 to decode SPx.And, if providing the system information included among the SPx updated, then SIM system information management device 612 storing system information from S-SFH analyzer 61.Now, because the SPx that application updates can be postponed, so MS does not abandon SPx before the update.In more detail, SIM system information management device 612 stores at least two system informations, namely, respectively change system information corresponding to the currency counted with S-SFH and change, with S-SFH, both system informations that the preceding value counted is corresponding, and, system configuration according to application, corresponding system information is supplied to controller 614 by SIM system information management device 612.In more detailed description, SIM system information management device 612 uses the CTF provided from P-SFH analyzer 608 to determine and applies system configuration corresponding to the preceding value changing counting with S-SFH or apply the system configuration corresponding with the currency of S-SFH change counting, and the system information that the system depending on application configures is supplied to controller 614.But, according to another exemplary embodiment of the present invention, SIM system information management device 612 can determine whether to apply system configuration corresponding to the preceding value changing counting with S-SFH according to predefined condition and not use CTF.Such as, change the transmission of SPx of at least one renewal after counting increases at S-SFH be done that ' N ' secondary or during more condition when meeting, when the system configuration that application is corresponding with the currency of S-SFH change counting, SIM system information management device 612 changes, by S-SFHSP, at least one SPx that bitmap identification updates, and determines the future time point sending at least one SPx updated.And, SIM system information management device 612 determines that application is changed the system configuration that the preceding value of counting is corresponding by it with S-SFH, until at least one SPx updated is sent the superframe that ' N ' is secondary.Now, ' N ' can be equal to ' 2 ' for SP1 and SP2, and can be equal to ' 1 ' for SP3.

By notifying the time point of the system information of MS application renewal in a broadband wireless communication system, the one exemplary embodiment of the present invention can minimize by not receiving the attendant exclusion state that system information causes.And, the one exemplary embodiment offer of the present invention allows the MS particularly suspending in idle pulley, sleep pattern etc. and recovering to communicate recognize the change of system information and know the effective ways of the time point applying the system information changed.

Although illustrate by reference to its particular exemplary embodiment and describe the present invention, but it will be apparent to those skilled in the art that and can carry out the various the spirit and scope of the present invention being altered without departing from and being limited by claims and equivalent thereof here in form and details.

Claims

1. the operational approach of the base station in wireless communication system (BS), the method includes:

Determine whether to apply the system configuration corresponding with the preceding value updating the change counting changed according to system information；

When the system corresponding with the preceding value changing counting when application configures, would indicate that the parameter that the system of application configures is set to the first value；

When the system corresponding with the currency changing counting when application configures, this parameter is set to the second value；And

Transmission includes secondary superframe head (S-SFH) and changes the main superframe head (P-SFH) of this parameter counting and being set to one of the first value and the second value,

Wherein, the instruction of described parameter is employed with a corresponding system configuration in the preceding value changing counting and currency, and

Wherein, described parameter has the size of 1.

2. the method for claim 1, farther includes:

If at least one subgroup (SP) of secondary superframe head (S-SFH) is updated, then increase this change counting；

Change at least one SP for identifying renewal change in bitmap with corresponding at least one SP at least one position updated；And

Send the P-SFH including this change counting and this change bitmap.

3. method as claimed in claim 2, farther includes:

At least one SP updated is sent by carrying the superframe head (SFH) of the P-SFH including this change counting and this change bitmap.

4. method as claimed in claim 2, farther includes:

After the P-SFH including this change counting and this change bitmap from transmission begins to pass through at least one superframe, send at least one SP updated.

5. the method for claim 1, farther includes:

If the multiple SP in the middle of the SP of S-SFH are updated, then increase this S-SFH and change counting；

What change at least one SP for identifying renewal changes multiple positions corresponding with the plurality of SP in bitmap；

Send the P-SFH including this change counting and this change bitmap；And

Sending the plurality of SP on multiple superframes, every superframe sends one.

6. method as claimed in claim 5, farther includes:

After completing the transmission of the plurality of SP, this parameter is set to the second value；And

Send and include being set to the P-SFH of this parameter of the second value.

7. the method for claim 1, wherein said determines whether that the application system configuration corresponding with the preceding value of this change counting includes, when meet following at least one time determine that system corresponding to currency that application counts with this change configures:

The movement station (MS) of access BS has received the condition of the SP of update all,

After this change counting increases, the transmission of the SP of at least one renewal is complete the condition of predefined number of times, and

Increase from this change counting and start to pass through the condition of the superframe of predetermined quantity.

8. the base station (BS) in a wireless communication system, this base station includes:

It is used to determine whether to apply and the device updating system configuration corresponding to the preceding value changing counting changed according to system information；

For when the application system corresponding with the preceding value changing counting configures, would indicate that the parameter that the system of application configures is set to the device of the first value；

For when the application system corresponding with the currency changing counting configures, this parameter being set to the device of the second value；And

For sending the device including the main superframe head (P-SFH) that secondary superframe head (S-SFH) changes this parameter counting and being set to one of the first value and the second value,

Wherein, described parameter has the size of 1.

9. base station as claimed in claim 8, farther includes:

If at least one subgroup (SP) for secondary superframe head (S-SFH) is updated, then increase the device of this change counting；

For changing the device changed in bitmap with corresponding at least one SP at least one updated of at least one SP for identifying renewal；And

For sending the device of the P-SFH including this change counting and this change bitmap.

10. base station as claimed in claim 9, farther includes:

For passing through to carry the device of at least one SP of superframe head (SFH) the transmission renewal of the P-SFH including this change counting and this change bitmap.

11. base station as claimed in claim 9, farther include:

After beginning to pass through at least one superframe at the P-SFH including this change counting and this change bitmap from transmission, send the device of at least one SP updated.

12. base station as claimed in claim 8, farther include:

If be updated for the multiple SP in the middle of the SP of S-SFH, then increase this S-SFH and change the device of counting；

For changing the device changing corresponding with the plurality of SP in bitmap multiple of at least one SP for identifying renewal；

For sending the device of the P-SFH including this change counting and this change bitmap；And

For sending the plurality of SP on multiple superframes, every superframe sends the device of.

13. base station as claimed in claim 12, farther include:

For, after completing the transmission of the plurality of SP, this parameter being set to the device of the second value；And

For sending the device including being set to the P-SFH of this parameter of the second value.

14. base station as claimed in claim 8, the wherein said device being used to determine whether the application system configuration corresponding with the preceding value of this change counting includes, for when meet following at least one time determine the device that system corresponding to currency that application counts configures with this change:

15. an operational approach for the movement station (MS) in wireless communication system, the method includes:

Determining the value of the parameter of the system configuration representing application and the value changing counting updating change according to system information, wherein this parameter and this change counting are included in the main superframe head (P-SFH) received by superframe head (SFH)；

When the value of this parameter is equal to the first value, applies the system configuration corresponding with the preceding value of this change counting and perform communication；And

When the value of this parameter is equal to the second value, applies the system configuration corresponding with the currency of this change counting and perform communication,

Wherein, described parameter has the size of 1.

16. method as claimed in claim 15, farther include:

If one of receiving the subgroup (SP) of secondary superframe head (S-SFH), then decode described SP；

SP is classified by the value changing counting according to S-SFH；And

Store described SP.

17. method as claimed in claim 16, farther include:

When the value of this change counting included in P-SFH increases, the change bitmap included in P-SFH is used to determine at least one SP of the renewal in the SP of S-SFH；And

Determine by including the schedule information bitmap in P-SFH whether at least one SP of this renewal is sent.

18. method as claimed in claim 15, farther include:

When the value of this parameter is equal to the second value, it is determined whether store the whole SPs corresponding with the currency that secondary superframe head (S-SFH) changes counting；And

When there is no to store the whole SP corresponding with the currency of S-SFH change counting, stop communication, until storing the whole SPs corresponding with the currency of this S-SFH change counting.

19. the movement station (MS) in a wireless communication system, this movement station includes:

For determining the value of the parameter of the system configuration representing application and the device updating the value changing counting changed according to system information, wherein this parameter and this change counting are included in the main superframe head (P-SFH) received by superframe head (SFH)；

For when the value of this parameter is equal to the first value, applying the system configuration corresponding with the preceding value of this change counting and perform the device of communication；And

For when the value of this parameter is equal to the second value, applying the system configuration corresponding with the currency of this change counting and perform the device of communication,

Wherein, the instruction of described parameter is employed with a corresponding system configuration in the preceding value changing counting and currency, and,

Wherein, described parameter has the size of 1.

20. movement station as claimed in claim 19, farther include:

If for one of subgroup (SP) of receiving secondary superframe head (S-SFH), then decoding the device of described SP；

For changing the value counted by the SP device classified according to S-SFH；And

For storing the device of described SP.

21. movement station as claimed in claim 20, farther include:

For when the value of this change counting included in P-SFH increases, use and include changing, in P-SFH, the device that bitmap determines at least one SP of renewal in the SP of S-SFH；And

At least one SP of this renewal device whether sent is determined for passing through the schedule information bitmap included in P-SFH.

22. movement station as claimed in claim 19, farther include:

For when the value of this parameter is equal to the second value, it is determined whether store the device of the whole SPs corresponding with the currency that secondary superframe head (S-SFH) changes counting；And

For when there is no to store the whole SP corresponding with the currency of S-SFH change counting, stopping communication, until storing the device of the whole SPs corresponding with the currency of this S-SFH change counting.