CN101006663B

CN101006663B - Method and system for transmitting/receiving neighbor base station information

Info

Publication number: CN101006663B
Application number: CN200580028177.1A
Authority: CN
Inventors: 金俊亨; 金泰源; 张洪成; 张容; 林根辉
Original assignee: Samsung Electronics Co Ltd
Current assignee: Nokia Technologies Oy
Priority date: 2004-08-17
Filing date: 2005-08-17
Publication date: 2013-01-16
Anticipated expiration: 2025-08-17
Also published as: KR100724911B1; RU2007105879A; CN101841366A; JP2008506301A; CN101841366B; KR20060016720A; RU2345488C2; JP4813478B2; CN101006663A

Abstract

Disclosed is a method and system for forming and transmitting to an MS a broadcast message for notifying information of neighbor BSs in a BWA communication system. The method includes scanning neighbor base stations adjacent to the serving base station, collecting information of the scanned neighbor base stations, comparing a size of the information of the scanned neighbor base stations with a size of a frame for carrying the information of the neighbor base stations constructing at least one broadcast message that includes the information of the neighbor base stations according to a result of the comparison, setting up fields of the constructed broadcast message according to information included in the constructed broadcast message and broadcasting the broadcast message including the setup fields.

Description

The method and system of a kind of transmission/reception neighbor base stations information

Technical field

The present invention relates to broadband wireless access (BWA) communication system, specifically, relate to for form in the BWA communication system and transmit/receive neighbor base stations (BS) information so that serving BS broadcasts sends neighbours BS information to the method and system of travelling carriage (MS).

Background technology

For the purpose exploitation communication system of voice service, people develop communication system so that data, services and various multimedia service to be provided to people now at the beginning.Yet, have the relatively narrow bandwidth that transmits for data for the communication system of voice service exploitation, and require relatively costly service charge, so it can not satisfy the needs that the user increases fast to various services.And, because along with the development of the communications industry demand to the increase of Internet service, cause the necessity of communication system that can the effective supply Internet service to increase.Therefore, introduced broadband wireless access (BWA) communication system, it has for the enough wide bandwidth that satisfy the user's request that increases fast, and Internet service is provided effectively.

The BWA communication system is for support voice service not only but also the communication system supporting low and various data, services at a high speed and be used for providing the multimedia application service etc. of high quality motion picture etc.The BWA communication system uses the broadband in movement or static situation based on wireless medium, support is to the access of public switch telephone network (PSTN), Packet Switch Data Network (PSDN), internet network, international mobile telecommunication (IMT)-2000WL asynchronous transfer mode (ATM) network etc., and support IA High Speed Channel data rate.Can according to mobility (static or mobile), communication environment (outdoor or indoor) and the channel data rates of subscriber station (SS), the BWA communication system be categorized as broadband wireless subscriber network, broadband mobile access network and high-speed radio local area network (LAN) (LAN).

Simultaneously arranging standard for the radio access scheme of BWA communication system as 802.16 standardization group of the Institute of Electrical and Electric Engineers (IEEE) of an International Standards Organization, and particularly, carrying out work now to set up the IEEE802.16d standard that is used for broadband wireless the Internet services is offered static SS.802.16 system does not consider the mobility of SS.

BWA system according to IEEE 802.16d standard has the wider bandwidth that transmits for data, therefore compares with the conventional wireless techniques that is used for voice service, can transmit at short notice the much bigger data of quantity.And in the BWA system according to IEEE 802.16d standard, all users can shared channel, therefore realizes the effective use to channel.And, can guarantee various service quality (QoS) according to the BWA system of IEEE 802.16d standard, therefore can the service of different quality be offered the user according to the characteristic of service.In IEEE 802.16d standard, all users that are connected to BS share common signal channel, so BS distributes the interval of common signal channel to be used by each user in each up link and down link image duration.Therefore, BS must send to the user so that the user can shared channel with up link and down link access information by every frame.Therefore, in IEEE 802.16d standard, be uplink channel and downlink channel with channel distribution, define information about each channel according to type, length and value (TLV), then defined information is inserted in the downlink channel descriptor (DCD) and uplink channel descriptor (UCD) message that is sent to all users, thereby will sends to SS about the characteristic information of this channel.

And, order about now IEEE 802.16 standardization group and set up the IEEE 802.16e standard that is used for mobility is offered the SS of IEEE802.16d communication standard.IEEE 802.16e communication system has the wider bandwidth that transmits for data, therefore compares with the conventional wireless techniques that is used for voice service, can transmit in the short period of time the much bigger data of quantity.And in IEEE 802.16e communication system, all users can shared channel, thereby realizes the effective utilization to channel.Therefore and IEEE 802.16e communication system can guarantee various service quality (QoS), according to the characteristic of service the service of different quality is offered the user.(handoff) transferred in the support of IEEE 802.16e communication system, therefore guarantees the mobility of travelling carriage (MS).

In order to support the mobility of MS, the BS of IEEE 802.16e communication system periodically will comprise mobile neighbours' advertisement (MOB_NBR-ADV) information broadcast of neighbours BS information to all MS in the unit of being controlled by this BS, thereby the state information of neighbours unit is sent to MS.Specifically, when the MS that is positioned at a unit moves to the neighbours unit, MS can be currently located at the MOB_NBR-ADV message that the serving BS broadcasts of active cell is wherein broadcasted by receiving by control MS, tentatively obtain the information of the neighbours BS of network ID, the neighbours unit the channel characteristics (that is, the neighbours unit of BS control) such as neighbours BS.Therefore IEEE 802.16e communication system can be supported the transfer of MS.

Yet, in IEEE 802.16e communication system, when serving BS broadcasts has too many neighbours unit or neighbours unit to have the capacity very different from the capacity of active cell, the quantity that is sent to the neighbours BS information of MS from serving BS broadcasts becomes too much, becomes too large down to the MOB_NBR-ADV message that is sent to MS from serving BS broadcasts.When serving BS broadcasts has too many neighbours BS information, can not in a frame, transmit all information.In other words, comprise that the MOB_NBR-ADV message of all neighbours BS information becomes too large, therefore can not in a frame, transmit.In IEEE 802.16e communication system, BS can not control media interviews (MAC) administrative messag and carry out segmentation (fragment) to transmit this message.

Summary of the invention

Therefore, made the present invention solving the problems referred to above that produce at least in the prior art, and the purpose of this invention is to provide for forming and transmit in the BWA communication system/receiving and be used for sending the information of neighbours BS to the method and system of the broadcast of MS.

Another aspect of the present invention is provided in the BWT communication system method and system that will carry out segmentation and transmission/reception to the broadcast of MS for the information that sends neighbours BS.

In order to achieve this end, be provided for by wherein serving BS is with the method for neighbor base stations information broadcasting to the transmission of the serving BS in the broadband wireless access communication system using multi of travelling carriage neighbor base stations information, the method comprising the steps of: scan the neighbor base stations adjacent with described serving BS; Collect the information of the neighbor base stations that scans; Compare with the size of the information of the neighbor base stations that will the scan size with the frame of the information that is used for carrying described neighbor base stations; Make up at least one broadcast of the information that comprises described neighbor base stations according to the result of described comparison, and set up the field of constructed broadcast according to information included in constructed broadcast, and broadcasting comprises the described broadcast of set vertical field.

According to another aspect of the present invention, be provided for by serving BS wherein the neighbor base stations information broadcasting being received the method for neighbor base stations information to the travelling carriage in the broadband wireless access communication system using multi of travelling carriage, described method comprises step: the travelling carriage by the information of the neighbor base stations that obtains to comprise in the first broadcast receives the first broadcast that transmits from serving BS, and from the information that obtains, determine described the first broadcast whether through the broadcast of segmentation, and when being broadcast through segmentation, described the first broadcast receives from least one of serving BS transmission more through the broadcast of segmentation.

According to another aspect of the present invention, be provided for by serving BS wherein the neighbor base stations information broadcasting being formed the method for neighbor base stations information to the serving BS in the broadband wireless access communication system using multi of travelling carriage, the method comprising the steps of: scan the neighbor base stations adjacent with serving BS, collect the information of the neighbor base stations that scans, compare with the size of the information of the neighbor base stations that will the scan size with the frame of the information that is used for the carrying neighbor base stations, and make up at least one broadcast of the information that comprises neighbor base stations and the field of setting up constructed broadcast according to information included in constructed broadcast according to the result of described comparison.

Make up another aspect of the present invention, be provided for serving BS therein with the neighbor base stations information broadcasting to the method that transmits and receive neighbor base stations information in the broadband wireless access communication system using multi of travelling carriage, the method comprising the steps of: scan the neighbor base stations adjacent with serving BS, collect the information of the neighbor base stations that scans, the size of the information of the neighbor base stations that the scans size with the frame of the information of carrying neighbor base stations is compared, make up at least one broadcast of the information that comprises neighbor base stations according to the result of described comparison, be structured in information included in the constructed broadcast and set up the field of constructed broadcast, and comprised the broadcast of set vertical field by serving BS broadcasting, with the broadcast that is sent from serving BS by the travelling carriage reception, the information of acquisition included neighbor base stations in broadcast, and determine that from the information that obtains broadcast is whether through the broadcast of segmentation, and when broadcast is broadcast through segmentation, receive the broadcast through segmentation that at least one more sends from serving BS by travelling carriage.

According to another aspect of the present invention, be provided for serving BS therein with the neighbor base stations information broadcasting to the system that transmits and receive neighbor base stations information in the broadband wireless access communication system using multi of travelling carriage, this system comprises: serving BS, be used for the scanning neighbor base stations adjacent with this serving BS, collect the information of the neighbor base stations that scans, the size of the information of the neighbor base stations that the scans size with the frame of the information of carrying neighbor base stations is compared, make up at least one broadcast that comprises neighbor base stations information according to described comparative result, set up the field of constructed broadcast according to information included in constructed broadcast, and will comprise that the broadcast of the field of setting up broadcasts; And travelling carriage, be used for receiving the broadcast that sends from serving BS by this travelling carriage, the information of acquisition included neighbor base stations in broadcast, and determine that from the information that obtains whether described broadcast is the broadcast through segmentation, and when being broadcast through segmentation, broadcast receives at least one more through the broadcast of segmentation.

According to another aspect of the present invention, be provided for by serving BS wherein the neighbor base stations information broadcasting being formed the system of neighbor base stations information to the serving BS in the broadband wireless access communication system using multi of travelling carriage, this system comprises: serving BS, be used for the scanning neighbor base stations adjacent with this serving BS, collect the information of the neighbor base stations that scans, the size of the information of the neighbor base stations that the scans size with the frame of the information of carrying neighbor base stations is compared, comprise at least one broadcast of neighbor base stations information according to described comparative result structure, and set up the field of constructed broadcast according to information included in constructed broadcast.

Description of drawings

By reference to the accompanying drawings by following detailed description, of the present invention above and other purposes, characteristics and advantage will become more obvious, wherein:

Fig. 1 shows the structure of the BWA communication system that makes up embodiment of the present invention, the transfer of the mobile MS between its unit of supporting to be controlled by the BS that supports different operation modes;

Fig. 2 shows the form of the MOB_NBR-ADV message that proposes in the BWA communication system that makes up embodiments of the present invention;

Fig. 3 shows the segmentation method according to the MOB_NBR-ADV message of embodiment of the present invention; With

Fig. 4 is the flow chart of processing according to the embodiment of the present invention, and wherein serving BS broadcasts formation and transmission/reception comprise the broadcast of neighbours BS information.

Embodiment

Below, describe embodiments of the invention in detail with reference to accompanying drawing.In the following description, may so that theme of the present invention becomes when not knowing, omit the known function that is combined wherein and the detailed description of configuration when it

As mentioned above, put forward the methods of the present invention and system, be used in the BWA communication system, form the particularly broadcast of mobile neighbours' advertisement (MOB_NBR-ADV) message, neighbours BS information is sent to MS to support the transfer of MS from serving BS broadcasts (the current BS of service to MS that provide).And, the present invention proposes method and system, be used for transmitting and receive the MOB_NBR-ADV message that comprises neighbours BS information in the BWA system.The present invention proposes method and system, be used for having the too many neighbours BS information that will send MS in serving BS broadcasts, therefore to be sent to the MOB_NBR-ADV message of MS when too large, make up MOB_NBR-ADV message and constructed MOB_NBR-ADV message is sent to MS by carrying out segmentation.And, all broadcasts that can also apply the present invention between BS and MS, exchange and formation and the transmission of MOB_NBR-ADV message.

For convenient, following description is based on such hypothesis: the BWA communication system that makes up preferred implementation of the present invention is to use the IEEE 802.16e communication system of OFDM (OFDM) scheme and OFDM (OFDMA) scheme.Because IEEE 802.16e communication system is used the OFDM/OFDMA scheme, so it transmits physical channel signal by a plurality of subcarriers of use, thereby realize high-speed data transfer.And IEEE 802.16e communication system is supported the mobility of multi-unit structure and MS.

Fig. 1 illustrates the structure of the BWA communication system that makes up embodiments of the present invention, and it is supported in the transfer of MS mobile between the unit of being controlled by the BS that supports different operation modes.

With reference to Fig. 1, the BWA communication system has multi-unit structure, comprises unit 1 101, unit 2 103, unit 3 105, unit 4 107, unit 5 109, unit 6 111 and unit 7 113.And the BWA communication system comprises BS 121,123,125,127,129,131,133 and MS 150.BS 121,123,125,127,129,131,133 is control unit 101,103,105,107,109,111,113 respectively.When MS 150 moves, can receive service from BS 121,123,125,127,129,131,133 between unit 101,103,105,107,109,111,113.Handshaking between MS 150 and BS 121,123,125,127,129,131,133 is used the OFDM/OFDMA scheme.

When MS 150 moves to the unit 2 103 of being controlled by BS 2 123 from the unit 1 101 that BS 1 121 controls, serving BS broadcasts (the current BS that service is offered MS 150) changes to BS 2 123 from BS 1 121, and BS 1 121 (current service BS) will comprise that the MOB_NBR-ADV information broadcast of BS information of neighbours unit is to MS 150.When receiving MOB_NBR-ADV message, MS 150 obtains the BS information of neighbours unit in advance.Then, in case MS 150 obtains the channel information of BS 2 123, MS 150 just begins to process thereby carry out to transfer be used to the processing that is connected of setting up with BS 2 123.Namely, BS 1 121 (current service BS) broadcasting MOB_NBR-ADV message is with tentatively with neighbours BS information (namely, the information of BS 2 123) send to the MS 150 that moves to unit 2 103, and MS 150 identifies the information of BS 2 123 from received MOB_NBR-ADV message.As a result of, the BWA communication system is supported the transfer of MS 150.

In having the BWA communication system of said structure, serving BS broadcasts is inserted into neighbours BS information in the MOB_NBR-ADV message, to send neighbours BS information to MS.Below table 1 form of MOB_NBR-ADV message is shown.

Table 1

Grammer	Size	Explain
			MOB_NBR-ADV_Message_Format() {
Management Message Type＝49	8 bits
			Operator ID
	24 bits	Distribute to unique ID of operator
			Fragmentation Index	4 bits	Current segmented index
Total Fragmentation	4 bits	The sum of segmentation
			N_NEIGHBORS	8 bits
For(j＝0；j＜N_NEIGHBORS；j++){
			Neighbor BS ID	48 bits
PHY Profile ID	32 bits
			Configuration Change Count	8 bits	The each change of information of the neighbours BS that is associated all increases progressively
TLV Encoded Neighbor information	Variable	TLV is special-purpose

[0031]

}
	HMAC Tuple	21	Byte is seen 11.4.11
}

As shown in table 1, MOB_NBR-ADV message comprises a plurality of information elements (IE), it comprises: ' Management Message Type (management message type) ' field (Management Message Type=49) of 8 bits of the type of the message that expression transmitted/receives, minute be used in sign operator, ' Operator ID (carrier ID) ' field of the identifier (ID) of expression operator and 24 bits that can be shared by one group of BS, ' N_NEIGHBOR ' field, ' HMAC Tuple (tuple) ' field of 21 bits and the information of all neighbours BS of 8 bits of the quantity of expression neighbours BS.And, MOB_NBR-ADV message comprises ' Fragmentation Index (segmented index) ' field and ' TotalFragmentation (total segmentation) ' field, and they each has ' Neighbor Set (neighborhood) ' of 4 bits and expression neighbours BS.

Namely, with neighbours BS ' Neighbor Set ' field is divided into the ' Fragmentation Index ' field of the index of the current MOB_NBR-ADV message that is segmented that expression transmits by the present frame in all MOB_NBR-ADV message that are segmented, with the quantity of all MOB_NBR-ADV message that are segmented of the expression, ' Total Fragmentation ' field of the quantity of all segmentations that namely from whole MOB_NBR-ADV message, are divided into.

Fig. 2 illustrates the form of the MOB_NBR-ADV message of the segment information that comprises above-mentioned new interpolation, namely ' Fragmentation Index ' field represents the current index through the MOB_NBR-ADV of segmentation message that transmits, and ' Total Fragmentation ' field represents that all are through the quantity of the MOB_NBR-ADV of segmentation message.With reference to Fig. 2, when serving BS broadcasts has too many neighbours BS information and the MOB_NBR-ADV message that can not be transmitted in a frame, serving BS broadcasts with MOB_NBR-ADV message be divided into its size can by frame carrying through the MOB_NBR-ADV of segmentation message, all quantity through the MOB_NBR-ADV of segmentation message are inserted into ' Total Fragmentation ' field, ' Fragmentation Index ' field, then the message of information has been inserted in transmission and will be inserted into by the index through the MOB_NBR-ADV of segmentation message that present frame transmits.When MOB_NBR-ADV being divided into more than one during through the MOB_NBR-ADV of segmentation message, serving BS broadcasts sequentially sends all to MS through the MOB_NBR-ADV of segmentation message by corresponding frame.In this case, ' Fragmentation Index ' field represents to be also included within the index of the neighbours BS in the MOB_NBR-ADV of segmentation that is transmitted by present frame, thereby the MOB_NBR-ADV through segmentation that MS can transmit present frame distinguishes through the MOB_NBR-ADV of segmentation message from other.And, because ' Total Fragmentation ' field represents to be sent to the quantity through all MOB_NBR-ADV message of segmentation of MS, thus MS can determine after present frame, whether to exist will by another frame transmit any more through the MOB_NBR-ADV of segmentation message.By ' Total Fragmentation ' field, MS can identify the quantity be used to the frame that carries whole MOB_NBR-ADV message, and what can receive that frame by respective amount transmits is all through the MOB of segmentation NBR-ADV message, thereby obtains the information of all neighbours BS.

And ' N_NEIGHBORS ' field comprises ' NeighborBS ID (neighbours BS ID) ' field of 48 bits of the ID that represents neighbours BS, ' PHYProfile ID (physics profile ID) ' field of 32 bits of the down link physical frequencies of expression neighbours BS, ' Configuration Change Count (configuration change count) ' field of 8 bits of the change count of the configuration of expression MOB_NBR-ADV message, and ' TLV Encoded Neighbor information (TLV encode neighbor information) ' field of the variable bit of the information of the TLV coding of expression neighbours BS.

In BWA communication system according to the embodiment of the present invention, MS can comprise that the MOB_NBR-ADV message of above-mentioned field obtains the information of neighbours BS by receiving from serving BS broadcasts, and because MS tentatively obtains to control the information of the BS of other unit that MS will move to, so when moving to another unit, MS can easily carry out transfer.Therefore, BWA communication system according to the present invention is pointed out the transfer of MS.And in the BWA communication system, MOB_NBR-ADV message comprises ' FragmentationIndex ' field and ' Total Fragmentation ' field.Therefore, when MOB_NBR-ADV message too large so that can not in a frame, be sent to MS the time, MOB_NBR-ADV message is divided into each has the size that can transmit in a frame the message through segmentation, thereby can in more than a frame, will be sent to MS through the message of segmentation.Therefore, according to the present invention, to have too many neighbours BS information and MOB_NBR-ADV message too large so that can't transmit the time even when serving BS broadcasts, serving BS broadcasts can be carried out segmentation with MOB_NBR-ADV message, then will be sent to MS through the MOB_NBR-ADV of segmentation message, and MS can tentatively obtain neighbours BS information through the MOB_NBR-ADV of segmentation message by receiving.

Table 2 illustrates another execution mode according to the present invention, comprises the form of MOB_NBR-ADV of information that is sent to the neighbours BS of MS from serving BS broadcasts in the BWA communication system.

Table 2

Grammer	Size	Explain
			MOB_NBR-ADV_Message_Format() {
Management Message Type＝49	8 bits
			Operator ID
	24 bits	Distribute to unique ID of operator

[0040]

Configuration Change Count	8 bits	The each change all increases the information of the neighbours BS that is associated
			Fragmentation Mode	1 bit	0: remaining segment pointing-type 1: total neighbours' pointing-type
If (Fragmentation Mode==1)
			TOT_N_NEIGHBORS	7 bits
Else{
			Start bit	1 bit	When being the first segmentation, message is set to 1
Number of Remaining Fragments	6 bits
			}
N_NEIGHBORS	8 bits
			For (j=0; J＜N_NEIGHBORS; J++)
Length	8 bits	Length with the information in the circulation of N_NEIGHBOR of byte representation
			Neighbor BS ID	48 bits
Preamble Index	8 bits	The index that is used for PHY profile (profile) proprietary header.The header index is the PHY for SCa and OFDMA special use.The value of header index should be ignored and the value of ' 0x00 ' should be used for OFDM PHY.
			PHY Profile ID	16 bits	TBD
HO Process Optimization	8 bits
			DCD Configuration Change Count	8 bits	The current DCD configuration change count of this expression neighbours BS
UCD Configuration Change Count	8 bits	The current UCD configuration variation of this expression neighbours BS odd number
			TLV Encoded Neighbor information	Variable	TLV is special-purpose

[0041]

}
			}

As shown in table 2, MOB_NBR-ADV message comprises a plurality of IE, it comprises: ' the Management Message Type ' field of 8 bits of the type of the message that expression transmitted/receives, be allocated for sign operator, ' OperatorID ' field of the identifier (ID) of expression operator and 24 bits that can be shared by BS group, 8 bits of the change count of the configuration of expression MOB_NBR-ADV message ' Configuration Change Count ' field, and represent the physical layer information of BS and comprise common location (Co-located) FA indicator bit, FA configuration indicator bit, the time/frequency synchronisation indicator, BS EIRP designator, the DCD/UCD reference designator, ' PHYProfile ID ' the field of FA index indicators and FA number.

When the MOB_NBR-ADV message with above-mentioned form too large so that can not in a frame, be transmitted the time, serving BS broadcasts can be divided into MOB_NBR-ADV each has the size that can be transmitted in a frame the message through segmentation, to send MOB_NBR-ADV message to MS.And when when sending MOB_NBR-ADV message to MS after the segmentation, each of MOB_NBR-ADV message must indicate this MOB_NBR-ADV message to be segmented through the segmentation of transmission.And, when MS had received a segmentation of the MOB_NBR-ADV message that indication MOB_NBR-ADV message has been segmented, the every other segmentation that MS can be by receiving the MOB_NBR-ADV message that is transmitted by frame was directly to receive after the first segment information of all neighbours BS.

In order to indicate MOB_NBR-ADV has been carried out segmentation, MOB_NBR-ADV message need to comprise following field.Namely, MOB_NBR-ADV message comprises: ' Fragmentation Mode (segmented model) ' field of 1 bit of expression segmented model, ' TOT_N_NEIGHBORS ' field of 7 bits that represents the quantity of all neighbours BS, expression is through ' Start bit (beginning bit) ' field of 1 bit of the beginning bit of the MOB_NBR-ADV of segmentation message, and each will be by ' Number of Remaining Fragments (remaining segment quantity) ' field of 6 bits of the remaining quantity through the MOB_NBR-ADV of segmentation message of frame transmission through the frame of the MOB_NBR-ADV of segmentation message after to be illustrated in carrying.

By above-mentioned field, can find out, according to the type of segmented model MOB_NBR-ADV message is carried out segmentation.' MOB_NBR-ADV ' message ' Fragmentation Mode ' field list first finger shows the type of the segmentation of MOB_NBR-ADV message.When the quantity by all neighbours BS, during namely by the segmentation of the quantitaes MOB_NBR-ADV message of neighbours BS information, expression indication type in ' TOT_N_NEIGHBORS ' field, and will ' Fragmentation Mode ' field is set to ' 1 '.And, when representing the segmentation of MOB_NBR-ADV by the number through the MOB_NBR-ADV of segmentation message, with ' Fragmentation Mode ' is set to ' 0 '.

Will be ' when Fragmentation Mode ' field be set to ' 1 ' when, ' TOT_N_NEIGHBORS ' field represents the quantity of all neighbours BS that serving BS broadcasts arrives the MOB_NBR-ADV information broadcast, and ' N_NEIGHBORS ' field of 8 bits represents the quantity by the neighbours BS of the BS information that transmits through the MOB_NBR-ADV of segmentation message, i.e. the quantity of neighbours BS information.When the quantity by the neighbours BS of the BS information that transmits through ' N_NEIGHBORS ' of the MOB_NBR-ADV of segmentation message field, be that the quantity of neighbours BS information is less than the quantity of all neighbours BS that transmitted by ' TOT_N_NEIGHBORS ' field, namely during the quantity of all neighbours BS information, MS must continue to receive remaining through the MOB_NBR-ADV of segmentation message, to obtain the information of residue neighbours BS.

Simultaneously, with ' Fragmentation Mode ' field is set to ' 0 ', needs to distinguish through the MOB_NBR-ADV of segmentation message.Therefore, ' Start bit ' field represents that first is set to ' 1 ' through the transmission of the MOB_NBR-ADV of segmentation message and first in the MOB_NBR-ADV of segmentation message.In other words, except first through the MOB_NBR-ADV of the segmentation message other in the MOB_NBR-ADV of segmentation message, will ' Start bit ' be set to ' 0 '.' Number of RemainingFragments ' field represents other quantity through the MOB_NBR-ADV of segmentation message that MS must receive.

And MOB_NBR-ADV message comprises: ' the TLV Encoded Neighbor information ' field of the variable bit of the information of the TLV coding of expression neighbours BS, expression is for ' DCD ConfigurationChange Count (DCD configuration change count) ' field of downlink channel descriptor (DCD) change count of the configuration of MOB_NBR-ADV message, expression is for ' UCD Configuration ChangeCount (UCD configuration change count) ' field of uplink channel descriptor (UCD) change count of the configuration of MOB_NBR-ADV message, be illustrated in ' Length (length) ' field of 8 bits of the length of neighbours BS information included in ' N_NEIGHBORS ' field, ' the Neighbor BS ID ' field of 48 bits of the ID of expression neighbours BS, ' HO Process Optimization (HO processes optimization) ' field that 8 bits of the optimization of processing are transferred in ' Preamble Index (header index) ' field of 8 bits of expression header index and expression.

Afterwards, a kind of method will be described, be used for comprising that the MOB_NBR-ADV message fragment of neighbours BS information is that each MOB_NBR-ADV message has the size that can be transmitted in a frame through the MOB_NBR-ADV of segmentation message, it uses the configuration of new definition in MOB_NBR-ADV message.

Fig. 3 illustrates according to embodiment of the present invention the MOB_NBR-ADV message fragment is the method through the MOB_NBR-ADV of segmentation message, and each MOB_NBR-ADV message has the size that can be transmitted in a frame.

With reference to Fig. 3, when serving BS broadcasts had too many neighbours BS and too many neighbours BS information, original MOB_NBR-ADV message 310 had the size of the default size that surpasses a frame 309.When original MOB_NBR-ADV message has the default size that surpasses a frame 309 big or small, can not in a frame 309, transmit original MOB_NBR-ADV message 310.

Yet, in the invention described above, original MOB_NBR-ADV message 310 is segmented into a MOB_NBR-ADV message 320 and the 2nd MOB_NBR-ADV message 330.Original MOB_NBR-ADV message 310 comprises expression type of message ' ID of Management Message Type ' field 301, the expression operator ' information of Operator ID ' field 303, expression neighbours BS and comprises field 305 and the ' HMAC Tuple ' field 307 of ' N_NEIGHBORS ' field of the quantity of all neighbours BS that expression is transmitted by a frame 309.As described here, the quantity of supposing neighbours BS included in ' N_NEIGHBORS ' field in original MOB_NBR-ADV message 310 is 24, and the information of expression neighbours BS and the field 305 that comprises ' N_NEIGHBORS ' field comprise the information of 24 neighbours BS.

According to the present invention, original MOB_NBR-ADV message 310 is segmented into the message through segmentation that each has the size that is no more than a frame 327, for example, be segmented into a MOB_NBR-ADV message 320 and the 2nd MOB_NBR-ADV message 330.As through one of segmented messages, a MOB_NBR-ADV message 320 comprises ' ' Operator ID ' field 303 and the ' HAMAC Tuple ' field 307 of the ID of Management Message Type ' field 301, expression operator of expression and identical message type included in original MOB_NBR-ADV message 310.

And a MOB_NBR-ADV message 320 comprises the ' information of Fragmentation Index ' field 321, expression neighbours BS and comprise ' Total Fragmentation ' field 323 and the field 325 of ' N_NEIGHBORS ' field of the quantity that is illustrated in all included in the MOB_NBR-ADV message 320 neighbours BS.' 321 expressions of Fragmentation Index ' field are by the index of a MOB_NBR-ADV message 320 of present frame 327 transmission, MOB_NBR-ADV message (that is, a MOB_NBR-ADV message 320) and the two MOB_NBR-ADV message 330 of its expression from through the MOB_NBR-ADV of segmentation message, being transmitted by present frame 327) be a MOB_NBR-ADV message 320.' all quantity through the MOB_NBR-ADV of segmentation message of Total Fragmentaion ' field 323 expression segmentations from original MOB_NBR-ADV message 310 are (in the situation of Fig. 3, because a MOB_NBR-ADV message 320 and the 2nd MOB_NBR-ADV message 330 are that all are through the MOB_NBR-ADV of segmentation message, so ' Total_Fragmentation ' field 323 is set to ' 2 ').As used herein, suppose that ' N_NEIGHBORS ' field of a MOB_NBR-ADV message comprises 16 BS, thereby a MOB_NBR-ADV message 320 has the size that is no more than present frame 327.Therefore, the information of expression neighbours BS and comprise that the field 325 of ' N_NEIGHBORS ' field comprises 16 neighbours BS information.

And, after by present frame 327 a MOB_NBR-ADV message 320 being sent to MS, directly the 2nd MOB_NBR-ADV message 330 is sent to MS by subsequently frame 337.The 2nd MOB_NBR-ADV message 330 comprise with a MOB_NBR-ADV message 32 in included identical ' ' Operator ID ' field 303 and the ' HMAC Tuple ' field 307 of the ID of Management Message Type ' field 301, expression operator.And, the 2nd MOB_NBR-ADV message 330 comprises that expression is the 2nd MOB_NBR-ADV message 330 from the MOB_NBR-ADV message that is transmitted by subsequently frame 327 in the MOB_NBR-ADV of segmentation message (that is, a MOB_NBR-ADV message 320 and the 2nd MOB_NBR-ADV message 330).

The same with a MOB_NBR-ADV message 320, the 2nd MOB_NBR-ADV message 330 also comprises the information of expression neighbours BS and comprises ' Total Fragmentation ' field 333 and the field 335 of ' N_NEIGHBORS ' field of the quantity that is illustrated in all included in the 2nd MOB_NBR-ADV message 333 neighbours BS.' all quantity through the MOB_NBR-ADV of segmentation message of Total Fragmentation ' field 333 expression segmentations from original MOB_NBR-ADV message 310 are (in the situation of Fig. 3, because a MOB_NBR-ADV message 320 and the 2nd MOB_NBR-ADV message 330 be all through the MOB_NBR-ADV of segmentation message, so will ' Total Fragmentation ' field 333 is set to ' 2 ').According to ' N_NEIGHBORS ' of a MOB_NBR-ADV message 320 thus field comprises 16 BS the one MOB_NBR-ADV message 230 has the hypothesis of the size that is no more than present frame 327, send 16 neighbours BS information to MS by a MOB_NBR-ADV message 320.As a result of, ' N_NEIGHBORS ' field that is sent to the 2nd MOB_NBR-ADV message 330 of MS by frame 337 subsequently is included in remaining 8 BS after the transmission of a MOB_NBR-ADV message 320, and the information of expression neighbours BS and comprise that the field 335 of ' N_NEIGHBORS ' field comprises 8 neighbours BS information.

Thereby although foregoing description comprises that based on a MOB_NBR-ADV message 320 16 neighbours BS information the one MOB_NBR-ADV message 320 have the hypothesis of the size that is no more than present frame 327, but a MOB_NBR-ADV message 320 can comprise the neighbours BS of varying number, and it changes the quantity of included neighbours BS in the 2nd MOB_NBR-ADV message 330.And, according to the present invention, when the 2nd MOB_NBR-ADV message 330 has greater than frame 337 subsequently big or small, original MOB_NBR-ADV message 310 can be segmented into three or more multi-disc through the MOB_NBR-ADV of segmentation message, and can by with through the frame of quantity corresponding to the quantity of the MOB_NBR-ADV of segmentation message with through minute MOB_NBR-ADV message send MS to.

In this case, each comprises above-mentioned field through the MOB_NBR-ADV of segmentation message.When serving BS broadcasts is carried out segmentation with MOB_NBR-ADV message, each has the size that is not more than a frame through the MOB_NBR-ADV of segmentation message thereby carry out segmentation based on the size of a frame, and is representing neighbours' BS information and comprising that the quantity of BS included in the field of ' N_NEIGHBORS ' field is no more than the quantity of transmissible BS in a frame.And each comprises ' ' Operator ID ' field and the ' HMAC Tuple ' field of the ID of Management Message Type ' field, expression operator with identical value jointly through the N_NEIGHBORS of segmentation message.

And, serving BS broadcasts will be inserted into through the quantity of the MOB_NBR-ADV of segmentation message in ' TotalFragmentation ' field, to be inserted into ' Fragmentation Index ' field by the current index through the MOB_NBR-ADV of segmentation message that present frame transmits, the information of neighbours BS is inserted into corresponding field, then is sent to MS with current through the MOB_NBR-ADV of segmentation message.

Although thereby top description discussion broadcasting MOB_NBR-ADV message serving BS broadcasts is notified situation to MS with neighbours BS information, can also apply the present invention to other broadcasts from the serving BS broadcasts to MS and formation and the transmission of MOB_NBR-ADV message.Afterwards, use description to form and transmit the operation of the serving BS broadcasts of the broadcast that comprises neighbours BS information.

Fig. 4 is the flow chart of process according to the embodiment of the present invention, and wherein serving BS broadcasts forms and transmit the broadcast of the information that comprises neighbours BS.

In step 401, serving BS broadcasts scanning and the information of collecting the neighbours BS that will be sent to MS.In step 403, serving BS broadcasts compares the information of collected neighbours BS and the size that is carried to the frame of MS for the information with collected neighbours BS.When the information of collected neighbours BS has when being not more than a frame big or small, serving BS broadcasts advances to step 409, and wherein serving BS broadcasts makes up and comprises the broadcast of collected information and send constructed broadcast to MS in a frame.When receiving broadcast by a frame, MS obtains the information of included neighbours BS in broadcast.Therefore, the BWA system supports the transfer of MS.

When the information as the collected neighbours BS of the definite result in the step 403 has greater than a frame big or small, serving BS broadcasts advances to step 405, and wherein serving BS broadcasts will comprise that the broadcast of collected information is divided into the broadcast through segmentation of each size with the size that is not more than frame.

Then, in step 407, serving BS broadcasts is set up the field that consists of through the broadcast of segmentation.For example, when in step 405, broadcast being divided into two during through the MOB_NBR-ADV of segmentation message, represent all through the quantity of the MOB_NBR-ADV of segmentation message, as shown in table 1 two through the MOB_NBR-ADV of segmentation message ' Total Fragmentation ' field is set to have identical binary value ' 0010 '.And, with expression by the first frame carry first through the index of the MOB_NBR-ADV of segmentation message, two in the MOB_NBR-ADV of segmentation message first through the MOB_NBR-ADV of segmentation message ' Fragmentation Index ' field is set to has value ' 0001 ', and second is set to have value ' 0010 ' through ' FragmentationIndex ' of the MOB_NBR-ADV of segmentation message field by what the second frame carried.Then, in step 409, serving BS broadcasts will comprise that in corresponding frame the broadcast through segmentation of the field of setting up is sent to MS.When broadcast being divided into two broadcasts through segmentation, serving BS broadcasts transmits these two broadcasts through segmentation in two frames.

MS sequentially receives aforesaid broadcast through segmentation in the frame of respective amount.Specifically, when received broadcast message segmentation is MOB_NBR-ADV message, MS identification through the field value of the MOB_NBR-ADV of segmentation message and check expression all through the quantity of the MOB_NBR-ADV of segmentation message ' value of Total Fragmentation ' field, thus determine whether the MOB_NBR-ADV message that is transmitted by present frame is through the MOB_NBR-ADV of segmentation message.

For example, current received MOB_NBR-ADV message ' when Total Fragmentation ' field had value ' 0000 ', it hinted that current received MOB_NBR-ADV message is not through the MOB_NBR-ADV of segmentation message.And MS can by the current received MOB_NBR-ADV message of decoding, obtain the information of neighbours BS from current received MOB_NBR-ADV message.' when Total Fragmentation ' field has any value except ' 0000 ' of the current MOB_NBR-ADV message that receives, MS from ' all quantity through the MOB_NBR-ADV of segmentation message of identification the value of Total Fragmentation ' field, and wait for to receive in frame subsequently, transmit through the MOB_NBR-ADV of segmentation message.Namely, MS receives through the MOB_NBR-ADV of segmentation message by sequentially transmitting a plurality of frames, and obtains the information of neighbours BS through the MOB_NBR-ADV of segmentation message by decoding.And MS can obtain information by all neighbours BS of serving BS broadcasts broadcasting through the MOB_NBR-ADV of segmentation message by receiving all.

In above-mentioned BWA communication system according to the present invention, serving BS broadcasts can be collected the information of neighbours BS, forms the broadcast of the information comprise neighbours BS, and if the message of broadcasting too large, then broadcast is carried out segmentation.Therefore, serving BS broadcasts can be sent to MS with a large amount of neighbours BS information.As a result of, because can in system, a large amount of neighbours BS information be sent to MS, so BWA communication system according to the present invention can be supported in the transfer of MS mobile between the unit.

Although illustrate and described the present invention with reference to its certain preferred embodiments, but the common counting personnel of this area should be appreciated that, in the situation that does not depart from the defined the spirit and scope of the present invention of claims, can change the present invention in form and details.

Claims

1. one kind is used for by serving BS neighbor base stations information being sent to the method for travelling carriage at broadband wireless access communication system using multi, and the method comprising the steps of:

Scan the neighbor base stations adjacent with described serving BS, the information of collecting described neighbor base stations, and the size of the information of the described neighbor base stations size with the frame of the information that is used for carrying described neighbor base stations compared;

Make up at least one broadcast of the information that comprises described neighbor base stations according to the result of described comparison; And

Broadcast described at least one broadcast,

Wherein, in the step that makes up at least one broadcast, when the size of the information of described neighbor base stations during greater than described frame big or small, described at least one broadcast is divided into broadcast through segmentation, thereby the size that whenever has the size that is not more than described frame once the broadcast of segmentation, and set up the field of described at least one broadcast according to the information that in described at least one broadcast, comprises

Wherein, the information that comprises in described at least one broadcast comprises the segment information of described at least one broadcast,

Wherein, in the step of the field of setting up described at least one broadcast, according to the sum of described broadcast through segmentation, described broadcast through segmentation each identifier index and set up field about the information of described neighbor base stations, described information about neighbor base stations comprises the sum of neighbor base stations, the identifier of neighbor base stations and the channel information of neighbor base stations.

2. method according to claim 1, wherein, the segment information of described at least one broadcast comprises whenever once the identifier index of the broadcast of segmentation with through the sum of the broadcast of segmentation.

3. method according to claim 1, wherein, the segment information of described at least one broadcast comprises: the sum of described neighbor base stations.

4. method according to claim 1, wherein, described at least one broadcast comprises the identifier of operator of the type of described at least one broadcast, described at least one broadcast and the format information of described at least one broadcast.

5. method according to claim 1, wherein, described at least one broadcast comprises the sum of described neighbor base stations and the channel information of neighbor base stations.

6. method according to claim 1 wherein, in the step of the field of setting up described at least one broadcast, is set up field according to the format information of described at least one broadcast.

7. method according to claim 1 wherein, in the step that described at least one broadcast is broadcasted, is sequentially broadcasted described broadcast through segmentation in the total corresponding frame of sum and described broadcast through segmentation.

8. one kind is used for by wherein serving BS is with the method for neighbor base stations information broadcasting to the travelling carriage reception neighbor base stations information of the broadband wireless access communication system using multi of travelling carriage, and described method comprises step:

The broadcast that reception transmits from described serving BS;

The information of acquisition included neighbor base stations in described broadcast; And

Determine whether segment information of the information obtain;

If the information that obtains is described segment information, then obtain the remaining information of described neighbor base stations from the one or more broadcast messages that receive subsequently, thereby obtain all information of described neighbor base stations,

Wherein, the field of described broadcast be according to through the sum of the broadcast of segmentation, described broadcast through segmentation each identifier index and set up about the information of described neighbor base stations, described information about neighbor base stations comprises the sum of neighbor base stations, the identifier of neighbor base stations and the channel information of neighbor base stations.

9. travelling carriage that is used for receiving at broadband wireless access communication system using multi neighbor base stations information,

Described travelling carriage comprises:

Be used for to receive the device of the broadcast that sends from serving BS;

If be used for to obtain in the information of the included neighbor base stations of broadcast and determine that thereby the information information whether segment information obtains that obtains is segment information then obtains the device of all information of described neighbor base stations from the remaining information that the one or more broadcast messages that receive subsequently obtain described neighbor base stations

10. one kind is used at the serving BS of broadband wireless access communication system using multi to travelling carriage transmission neighbor base stations information,

Described serving BS comprises:

The device that is used for the scanning neighbor base stations adjacent with this serving BS, collects the information of described neighbor base stations, the size of the size of the information of described neighbor base stations and the frame of the information of carrying described neighbor base stations is compared;

Be used for making up according to described comparative result the device of at least one broadcast that comprises neighbor base stations information;

For the device of broadcasting described at least one broadcast,

Wherein, described device for making up at least one broadcast is divided into broadcast through segmentation with described at least one broadcast, in order to whenever have the size of the size that is not more than described frame once the broadcast of segmentation, and set up the field of described at least one broadcast according to the information that in described at least one broadcast, comprises, and

Wherein, described device for making up at least one broadcast is according to through the sum of the broadcast of segmentation, whenever set up the field of described broadcast through segmentation once the identifier index of the broadcast of segmentation with about the information of neighbor base stations group, and described information about neighbor base stations comprises the sum of neighbor base stations, the identifier of neighbor base stations and the channel information of neighbor base stations.

11. serving BS according to claim 10, wherein, described device at least one broadcast of broadcasting at its sum corresponding to the broadcast of sequentially broadcasting through a plurality of frames of the sum of the broadcast of segmentation through segmentation.

12. serving BS according to claim 10, wherein, the segment information of described at least one broadcast comprises whenever once the identifier index of the broadcast of segmentation with through the sum of the broadcast of segmentation.

13. serving BS according to claim 10, wherein, the segment information of described at least one broadcast comprises: the sum of described neighbor base stations.

14. serving BS according to claim 10, wherein, described at least one broadcast comprises the identifier of operator of the type of described at least one broadcast, described at least one broadcast and the format information of described at least one broadcast.

15. serving BS according to claim 10, wherein, described at least one broadcast comprises the sum of neighbor base stations, the identifier of neighbor base stations and the channel information of neighbor base stations.

16. serving BS according to claim 10, wherein, the device that is used at least one broadcast of structure is set up the field of described at least one broadcast according to the format information of described at least one broadcast.