CN101841366A - Be used to broadcast and receive the method and system of neighbours' base station information - Google Patents

Be used to broadcast and receive the method and system of neighbours' base station information Download PDF

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Publication number
CN101841366A
CN101841366A CN201010163828A CN201010163828A CN101841366A CN 101841366 A CN101841366 A CN 101841366A CN 201010163828 A CN201010163828 A CN 201010163828A CN 201010163828 A CN201010163828 A CN 201010163828A CN 101841366 A CN101841366 A CN 101841366A
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segmentation
neighbours
base station
field
information
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CN101841366B (en
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金俊亨
金泰源
张洪成
张容
林根辉
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Nokia Technologies Oy
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Samsung Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/246—Connectivity information discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Small-Scale Networks (AREA)

Abstract

Disclosed be used for the BWA communication system be formed for notifying neighbours base station (BS) information broadcast and send the method for MS to.This method comprises the neighbours base station that scanning is adjacent with serving BS, collect the information of the neighbours base station of being scanned, the size of the information of the neighbours base station the scanned size with the frame of the information that is used to carry the neighbours base station is compared, make up at least one broadcast of the information that comprises the neighbours base station according to the result of this comparison, set up the field of constructed broadcast according to information included in constructed broadcast, and broadcasting will comprise the broadcast of the field of being set up.

Description

Be used to broadcast and receive the method and system of neighbours' base station information
The application be that August 17, application number in 2005 are 200580028177.1 the applying date, denomination of invention divides an application for the application for a patent for invention of " being used for forming and the method and system of transmission/reception neighbours base station information at broadband wireless access communication system using multi ".
Technical field
The present invention relates to broadband wireless access (BWA) communication system, specifically, relate to be used for the BWA communication system form and transmissions/reception neighbours base station (BS) information so that serving BS broadcasts transmission neighbours BS information to the method and system of travelling carriage (MS).
Background technology
At 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 narrow relatively bandwidth that transmits at data at 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, owing to, cause effectively providing the necessity of the communication system of Internet service to increase along with the development of communications industry demand to the increase of Internet service.Therefore, introduced broadband wireless access (BWA) communication system, it has the enough wide bandwidth that is used for satisfying the user's request that increases fast, and Internet service is provided effectively.
The BWA communication system is the communication system that is used for not only support voice service but also supports low and various data, services at a high speed and be used to provide the multimedia application service etc. of high quality motion picture etc.The BWA communication system uses the broadband in the mobile 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 ATM(Asynchronous Transfer Mode) network etc., and support IA High Speed Channel data rate.Can the BWA communication system be categorized as broadband wireless subscriber network, broadband mobile access network and high-speed radio Local Area Network according to mobility (static or mobile), communication environment (outdoor or indoor) and the channel data rates of subscriber station (SS).
Simultaneously arranging to be used for the standard of 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 is used for broadband wireless the Internet services is offered static SS with foundation IEEE802.16d standard now.802.16 system does not consider the mobility of SS.
BWA system according to IEEE 802.16d standard has the wider bandwidth that is used for the data transmission, therefore compares with the conventional wireless techniques that is used for voice service, can transmit the much bigger data of quantity at short notice.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, with channel distribution is uplink channel and downlink channel, define information according to type, length and value (TLV) about each channel, 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 IEEE 802.16 standardization group now 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 is used for the data transmission, therefore compares with the conventional wireless techniques that is used for voice service, can transmit the much bigger data of quantity in the short period of time.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 with 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 big 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 big, 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 and be used for forming and transmission/reception is used to send the method and system of the information of neighbours BS to the broadcast of MS in the BWA communication system.
Another aspect of the present invention is provided for will being used to sending the information of neighbours BS is carried out segmentation and transmission/reception to the broadcast of MS method and system in the BWT communication system.
In order to achieve this end, provide a kind of and be used at broadband wireless access communication system using multi by the method for serving BS to travelling carriage broadcasting neighbours base station information, the method comprising the steps of: each the value that a plurality of fields in each of m segmentation being included in described neighbours' base station information are set; And in the scheduled time for each segmentation, broadcast each of described m segmentation of described neighbours' base station information, wherein, a described m segmentation is to be divided into m segmentation by the broadcast that will comprise described neighbours' base station information to produce, and wherein, described a plurality of field is included in first field in each of a described m segmentation, second field and the 3rd field, described first field is indicated the segmented index of current segmentation, the total number of described second field indication segmentation equals m, wherein, m is the integer more than or equal to 1, and described the 3rd field indication is included in the number of the neighbours base station in the current segmentation.
According to a further aspect in the invention, a kind of method that is used for being received by mobile radio station at broadband wireless access communication system using multi neighbours' base station information is provided, wherein in described broadband wireless access communication system using multi, serving BS is broadcasted described neighbours' base station information to travelling carriage, the method comprising the steps of: in the scheduled time for each segmentation, described travelling carriage receives m segmentation of described neighbours' base station information from described serving BS, wherein, a described m segmentation is to be divided into m segmentation by the base station by the broadcast that will comprise described neighbours' base station information to produce, and wherein, a plurality of fields are included in first field in each of a described m segmentation, second field and the 3rd field, described first field is indicated the segmented index of current segmentation, the total number of described second field indication segmentation equals m, wherein, m is the integer more than or equal to 1, and described the 3rd field indication is included in the number of the neighbours base station in the current segmentation.
In accordance with a further aspect of the present invention, a kind of system that is used at broadband wireless access communication system using multi broadcasting and reception neighbours base station information is provided, wherein in described broadband wireless access communication system using multi, serving BS is broadcasted described neighbours' base station information to travelling carriage, this system comprises: serving BS, be adapted to each value of a plurality of fields in each that m segmentation being included in described neighbours' base station information is set, and, broadcast each of described m segmentation of described neighbours' base station information in the scheduled time for each segmentation; And travelling carriage, be used in the scheduled time for each segmentation, receive each of described m segmentation of described neighbours' base station information from described serving BS, wherein, described m segmentation is to be divided into m segmentation by the base station by the broadcast that will comprise described neighbours' base station information to produce, and wherein, a plurality of fields are included in first field in each of a described m segmentation, second field and the 3rd field, described first field is indicated the segmented index of current segmentation, the total number of described second field indication segmentation equals m, wherein, m is the integer more than or equal to 1, and described the 3rd field indication is included in the number of the neighbours base station in the current segmentation.
According to still one side of the present invention, providing a kind of is used in the system of broadband wireless access communication system using multi by serving BS broadcasting neighbours base station information, wherein in described broadband wireless access communication system using multi, serving BS is to travelling carriage broadcasting neighbours base station information, this system comprises: serving BS, be adapted to each value of a plurality of fields in each that m segmentation being included in described neighbours' base station information is set, and in the scheduled time for each segmentation, broadcast each of described m segmentation of described neighbours' base station information, wherein, a described m segmentation is to be divided into m segmentation by the broadcast that will comprise described neighbours' base station information to produce, and wherein, described a plurality of field is included in first field in each of a described m segmentation, second field and the 3rd field, described first field is indicated the segmented index of current segmentation, the total number of described second field indication segmentation equals m, wherein, m is the integer more than or equal to 1, and described the 3rd field indication is included in the number of the neighbours base station in the current segmentation.
Description of drawings
In conjunction with 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, and it supports the transfer by the mobile MS between the unit that BS controlled of supporting 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, when it may make theme of the present invention become not know, omit the known function that is combined wherein and the detailed description of configuration
As mentioned above, the present invention proposes method and system, be used for communication system, form the broadcast of particularly 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) at BWA.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 big, 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 the formation and the transmission of MOB_NBR-ADV message.
For convenience, 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,, thereby realize high-speed data transfer so it transmits physical channel signal by using a plurality of subcarriers.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 by the MS that moves between the unit that BS controlled of supporting 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 is mobile between unit 101,103,105,107,109,111,113, can receive service from BS 121,123,125,127,129,131,133.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 controlled by BS 2 123 2 103 from the unit 1 101 that BS 1121 is controlled, 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 the BS information of neighbours unit gives MS150.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 be used to set up the processing that is connected with BS 2 123, handles thereby carry out to transfer.Just, BS 1 121 (current service BS) broadcasting MOB_NBR-ADV message is with tentatively with neighbours BS information (promptly, the information of BS 2 123) send to the MS 150 that moves to unit 2 103, and MS 150 discerns 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
Grammer Size Explain
??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 The TLV special use
??}
??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, branch is used in sign operator, ' Operator ID (carrier ID) ' field of the identifier (ID) of expression operator and 24 bits that can share 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 all has ' Neighbor Set (the neighbours' set) ' of 4 bits and expression neighbours BS.
Just, with neighbours BS ' Neighbor Set ' field be divided into expression by all by in the MOB_NBR-ADV message of segmentation that present frame transmitted was current by the ' Fragmentation Index ' field of the index of the MOB_NBR-ADV message of segmentation, with expression all by the quantity of the MOB_NBR-ADV message of segmentation, i.e. ' Total Fragmentation ' the field of the quantity of all segmentations that from whole M OB_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, promptly ' Fragmentation Index ' field is represented the current index through the MOB_NBR-ADV of segmentation message that transmits, and ' Total Fragmentation ' field is represented all quantity through the MOB_NBR-ADV of segmentation message.With reference to Fig. 2, when serving BS broadcasts has the 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, the message of information has been inserted in transmission then and will be inserted into by the index through the MOB_NBR-ADV of segmentation message that present frame transmitted.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 MS can distinguish from other MOB_NBR-ADV through segmentation that present frame transmitted through the MOB_NBR-ADV of segmentation message.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 discern the quantity of the frame that is used to carry whole M OB_NBR-ADV message, and what can receive that frame by respective amount transmits is all through the MOB_NBR-ADV of segmentation 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 TLV information encoded 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 big 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 big 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, to be sent to MS through the MOB_NBR-ADV of segmentation message then, 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
Grammer Size Explain
Operator ID 24 bits Distribute to unique ID of operator
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 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 at SCa and OFDMA special use.The value of header index should be ignored and the value of ' 0x00 ' should be used at OFDM PHY.
Grammer Size Explain
??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 The TLV special use
??}
??}
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, ' Operator ID ' the field of the identifier (ID) of expression operator and 24 bits that can share by BS group, ' the physical layer information of Configuration Change Count ' field and expression BS and comprise co (Co-located) FA indicator bit of 8 bits of the change count of the configuration of expression MOB_NBR-ADV message, FA configuration indicator bit, time/the Frequency Synchronization designator, 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 big 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, the segmentation of each of MOB_NBR-ADV message through transmitting all must indicate this MOB_NBR-ADV message by segmentation.And, when MS had received indication MOB_NBR-ADV message by segmentation of the MOB_NBR-ADV message of segmentation, MS can be by receiving every other segmentation by the MOB_NBR-ADV message that frame transmitted directly to receive after first segment information of all neighbours BS.
In order to indicate MOB_NBR-ADV has been carried out segmentation, MOB_NBR-ADV message need comprise following field.Just, MOB_NBR-ADV message comprises: ' Fragmentation Mode (segmented model) ' field of 1 bit of expression segmented model, ' TOT_N_NEIGHBORS ' field of 7 bits of representing the quantity of all neighbours BS, expression is through ' Start bit (beginning the bit) ' field of 1 bit of the beginning bit of the MOB_NBR-ADV of segmentation message and be illustrated in carrying 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.
By above-mentioned field, as can be seen, MOB_NBR-ADV message is carried out segmentation according to the type of segmented model.' MOB_NBR-ADV ' message ' Fragmentation Mode ' field list first finger shows the type of the segmentation of MOB_NBR-ADV message.When quantity by all neighbours BS, during promptly 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 by when the number of the MOB_NBR-ADV of segmentation message is represented the segmentation of MOB_NBR-ADV, will ' Fragmentation Mode ' be set to ' 0 '.
Will be ' when Fragmentation Mode ' field be set to ' 1 ' when, ' TOT_N_NEIGHBORS ' field is represented the quantity of all neighbours BS that serving BS broadcasts arrives the MOB_NBR-ADV information broadcast, and ' N_NEIGHBORS ' field of 8 bits is represented the quantity by the neighbours BS of the BS information that is transmitted through the MOB_NBR-ADV of segmentation message, i.e. the quantity of neighbours BS information.When by quantity through the neighbours BS of ' N_NEIGHBORS ' of the MOB_NBR-ADV of segmentation message BS information that field transmitted, the quantity that is neighbours BS information is less than the quantity by ' TOT_N_NEIGHBORS ' all neighbours BS that field transmitted, promptly 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 is represented 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 TLV information encoded of expression neighbours BS, expression is at ' 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 at ' 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 handles optimization) ' field that 8 bits of the optimization of handling 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 redetermination 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 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 the 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 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 ' ' the 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 ' the 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) be a MOB_NBR-ADV message 320 by present frame 327.All quantity through the MOB_NBR-ADV of segmentation message of ' TotalFragmentaion ' field 323 expression segmentations from original MOB_NBR-ADV message 310 are (in the situation of Fig. 3, because 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 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 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 by present frame 327.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, 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 ' the 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 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 though 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 send MOB_NBR-ADV message to MS through the frame of the corresponding quantity of the quantity of the MOB_NBR-ADV of segmentation message through dividing.
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 in ' TotalFragmentation ' field through the quantity of the MOB_NBR-ADV of segmentation message, to be inserted into ' Fragmentation Index ' field by the current index that present frame transmitted through the MOB_NBR-ADV of segmentation message, the information of neighbours BS is inserted into corresponding field, is sent to MS with current through the MOB_NBR-ADV of segmentation message then.
, can also apply the present invention to other broadcasts from the serving BS broadcasts to MS and the formation and the transmission of MOB_NBR-ADV message though thereby top description discussion broadcasting MOB_NBR-ADV message serving BS broadcasts is notified to the situation of MS with neighbours BS information.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 with the information of collected neighbours BS be used for the information-bearing of the collected neighbours BS size to the frame of MS is compared.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 of formation 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 first frame carried 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 second frame carried.Then, in step 409, serving BS broadcasts will comprise that in corresponding frame the broadcast through segmentation of the field of being set 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 by the MOB_NBR-ADV message that present frame transmitted whether be 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 obtain the information of neighbours BS by the current received MOB_NBR-ADV message of decoding 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 of identification the value of Total Fragmentation ' field through the MOB_NBR-ADV of segmentation message, and wait for to receive in frame subsequently, transmit through the MOB_NBR-ADV of segmentation message.Just, 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 being broadcasted too big, 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 the MS that moves between the unit.
Though 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, under 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 (16)

1. one kind is used for broadcasting the method for neighbours base station information by serving BS to travelling carriage at broadband wireless access communication system using multi, and the method comprising the steps of:
Setting is included in each value of a plurality of fields in each of m segmentation of described neighbours' base station information; And
In the scheduled time for each segmentation, broadcast each of described m segmentation of described neighbours' base station information,
Wherein, a described m segmentation is to be divided into m segmentation by the broadcast that will comprise described neighbours' base station information to produce, and
Wherein, described a plurality of field is included in first field, second field and the 3rd field in each of a described m segmentation, described first field is indicated the segmented index of current segmentation, the total number of described second field indication segmentation equals m, wherein, m is the integer more than or equal to 1, and described the 3rd field indication is included in the number of the neighbours base station in the current segmentation.
2. the method for claim 1, wherein described current segmentation comprises the identifier that is included in the neighbours base station in the described current segmentation.
3. the method for claim 1, wherein described current segmentation comprises the physical frequencies that is included in the neighbours base station in the described current segmentation.
4. the method for claim 1, wherein described a plurality of fields comprise carrier ID field and configuration change count area, and wherein when the information of relevant neighbours base station changed, described configuration change count area increased progressively.
5. one kind is used in the method for broadband wireless access communication system using multi by mobile radio station reception neighbours base station information, and wherein in described broadband wireless access communication system using multi, serving BS is broadcasted described neighbours' base station information to travelling carriage, and the method comprising the steps of:
In the scheduled time for each segmentation, described travelling carriage receives m segmentation of described neighbours' base station information from described serving BS,
Wherein, a described m segmentation is to be divided into m segmentation by the base station by the broadcast that will comprise described neighbours' base station information to produce, and
Wherein, a plurality of fields are included in first field, second field and the 3rd field in each of a described m segmentation, described first field is indicated the segmented index of current segmentation, the total number of described second field indication segmentation equals m, wherein, m is the integer more than or equal to 1, and described the 3rd field indication is included in the number of the neighbours base station in the current segmentation.
6. method as claimed in claim 5, wherein, described current segmentation comprises the identifier of the neighbours base station in the information that is included in described current segmentation.
7. method as claimed in claim 5, wherein, described current segmentation comprises the physical frequencies that is included in the neighbours base station in the described current segmentation.
8. method as claimed in claim 5, wherein, described a plurality of fields comprise carrier ID field and configuration change count area, wherein when the information of relevant neighbours base station changed, described configuration change count area increased progressively.
9. one kind is used in broadband wireless access communication system using multi broadcasting and receives the system of neighbours' base station information, and wherein in described broadband wireless access communication system using multi, serving BS is broadcasted described neighbours' base station information to travelling carriage, and this system comprises:
Serving BS is adapted to each value of a plurality of fields in each that m segmentation being included in described neighbours' base station information is set, and in the scheduled time for each segmentation, broadcasts each of described m segmentation of described neighbours' base station information; With
Travelling carriage was used in the scheduled time for each segmentation, received each of described m segmentation of described neighbours' base station information from described serving BS,
Wherein, described m segmentation is to be divided into m segmentation by the base station by the broadcast that will comprise described neighbours' base station information to produce, and
Wherein, a plurality of fields are included in first field, second field and the 3rd field in each of a described m segmentation, described first field is indicated the segmented index of current segmentation, the total number of described second field indication segmentation equals m, wherein, m is the integer more than or equal to 1, and described the 3rd field indication is included in the number of the neighbours base station in the current segmentation.
10. system as claimed in claim 9, wherein, described current segmentation comprises the identifier that is included in the neighbours base station in the described current segmentation.
11. system as claimed in claim 9, wherein, described current segmentation comprises the physical frequencies that is included in the neighbours base station in the described current segmentation.
12. system as claimed in claim 9, wherein, described a plurality of fields comprise carrier ID field and configuration change count area, and wherein when the information change of relevant neighbours base station, described configuration change count area increases progressively.
13. one kind is used in the system of broadband wireless access communication system using multi by serving BS broadcasting neighbours base station information, wherein in described broadband wireless access communication system using multi, serving BS is to travelling carriage broadcasting neighbours base station information, and this system comprises:
Serving BS is adapted to each value of a plurality of fields in each that m segmentation being included in described neighbours' base station information is set, and in the scheduled time for each segmentation, broadcasts each of described m segmentation of described neighbours' base station information,
Wherein, a described m segmentation is to be divided into m segmentation by the broadcast that will comprise described neighbours' base station information to produce, and
Wherein, described a plurality of field is included in first field, second field and the 3rd field in each of a described m segmentation, described first field is indicated the segmented index of current segmentation, the total number of described second field indication segmentation equals m, wherein, m is the integer more than or equal to 1, and described the 3rd field indication is included in the number of the neighbours base station in the current segmentation.
14. system as claimed in claim 13, wherein, described current segmentation comprises the identifier that is included in the neighbours base station in the described current segmentation.
15. system as claimed in claim 13, wherein, described current segmentation comprises the physical frequencies that is included in the neighbours base station in the described current segmentation.
16. system as claimed in claim 13, wherein, described a plurality of fields comprise carrier ID field and configuration change count area, and wherein when the information of relevant neighbours base station changed, described configuration change count area increased progressively.
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