CN100442733C - Method for addressing target base station in radio city domain net system switching process - Google Patents
Method for addressing target base station in radio city domain net system switching process Download PDFInfo
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- CN100442733C CN100442733C CNB2005100359053A CN200510035905A CN100442733C CN 100442733 C CN100442733 C CN 100442733C CN B2005100359053 A CNB2005100359053 A CN B2005100359053A CN 200510035905 A CN200510035905 A CN 200510035905A CN 100442733 C CN100442733 C CN 100442733C
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Abstract
The present invention relates to wireless metropolitan area network technology, which discloses a method for addressing target base stations in wireless metropolitan area network system switching processes, so a target BS can be addressed in the process of wireless metropolitan area network exchange. Low 24 bits of BSID in the present invention are divided into two sections, wherein one section is used for uniquely identifying an ASN_GQ in the same operation network, and the other section is used for uniquely identifying a couple of physical and MAC processing entities in the same ASN_GW. The section representing the ASN_GW can take 10 bits, and the other section can take 14 bits. When addressing, the present invention can address the target operation network according to high 24 bits of the BSID, and the two sections in the low 24 bits can respectively address the target ASN_GW and the target BS. In addition, the present invention can also previously configure a route information list of contiguous BS in the BS and the ASN_GW and can take the low 24 bits from exchange request messages or survey report messages from a mobile station, so the present invention can obtain the route information of the contiguous BS via looking up the list.
Description
Technical field
The present invention relates to the wireless metropolitan area network technology, particularly the target BS addressing technique in the wireless metropolitan area network system.
Background technology
(the Institute of Electrical and Electronics Engineers of Institute of Electrical and Electronics Engineers, be called for short " IEEE ") 802 worked out different standards at the different market demands and application model in wireless domain, as be applied to PAN (Personal Area Network) (Personal Area Network, be called for short " PAN ") the IEEE802.15 standard, be applied to IEEE 802.11 standards of WLAN (wireless local area network) etc.
Wherein, IEEE 802.16 is for working out wireless MAN (Wireless metropolitan areanetworks, abbreviation " WMAN ") working group of standard establishment, this working group mainly is responsible for the air-interface standard of fixed wireless access, relate to Multi-Channel Microwave Distribution System (Microwave MultipointDistribution System, be called for short " MMDS "), LMDS (Local MultipointDistribution System/Service, be called for short " LMDS ") etc. technology, since micro-wave access to global intercommunication (Worldwide Interoperability for Microwave Access joins in the establishment of 802.16e task groups and a lot of main flow equipment manufacturers of support mobility, be called for short " WiMAX ") after, IEEE 802.16e has attracted increasing sight.This standard pin has defined different physical-layer techniques to different frequency range.The range of application of standard is mainly towards dwelling house, small office/family office (SOHO), teleworker and Short Message Entity (Short Message Entity is called for short " SME ") market.
Above-mentioned WiMAX is intended to promote the promotion and application of the serial air protocol of IEEE 802.16 (IEEE 802.16, IEEE 802.16d, IEEE802.16e) in the whole world.The WiMAX of indication all refers to satisfy the network entity of IEEE 802.16 air protocol herein.
Specifically, WiMAX is devoted to help and solve the problem that those obstruction standards are used, such as interoperability between the product of different vendor and product cost problem.WiMAX will formulate the test specification of a cover interoperability, with this cover standard the product of relevant producer is tested and authenticated, and to those products granting WiMAX authentication marks by authentication, thereby the manufacturer that encourages all WiMAXs to insert related industry follows a unified standard, make to have good interoperability between each product, and wish to promote whereby the development that WiMAX inserts industry.Fig. 1 illustrates the end-to-end reference model of WiMAX.
In Fig. 1, authentication sequence number (Authentication Sequence Number, abbreviation " ASN ") definition becomes the network function set that the WiMAX terminal provides the wireless access service, ASN has comprised base station (Base Station is called for short " BS ") and ASN gateway (Gateway, be called for short " GW ") network element, an ASN may be shared by a plurality of connectivity serving networks (Connectivity Service Network is called for short " CSN ").The reference model of ASN as shown in Figure 2.
The major function of ASN comprises the function of BS and the function of ASN_GW.Wherein, the function of BS has: BS and subscriber station (Subscribe Station is provided, be called for short " SS ")/the L2 connection of travelling carriage (Mobile SubscribeStation is called for short " MSS "), RRM, measurement is controlled with power and the compression and the encryption of the data of eating dishes without rice or wine.The function of ASN_GW has: for SS/MSS authentication function provides proxy function; Support the network of NSP to find and selection; The Relay function (as IP address assignment) of L3 information is provided for SS.The reference model of ASN as shown in Figure 2.
CSN is defined as to the WiMAX terminal IP is provided Connection Service.CSN provides mainly that the IP address assignment, Internet of following function: SS/MSS insert, AAA proxy or server, serve (as location-based business, multi-medium multi-packet broadcasting and broadcasting service, IP Multimedia System business) based on user's authorization control, the ASN tunnel between the CSN, switching and the various WiMAX between the ASN under the tunnel of CSN, WiMAX user's charging and the clearing between the operator, the roaming condition.
MSS/SS is (moving) subscriber equipment, and the user uses this devices accessing WiMAX network.
As shown in Figure 3, in the agreement of existing IEEE 802.16e, BSID (Base Station Identification) has been defined the value of a 48bits, wherein Gao Wei 24bits position Operation Network ID (Operator ID (first)) is worth, and low level 24bits is a local BS ID value (second portion) in the operator.
According to whether supporting mobility, IEEE 802.16 standards can be divided into fixed broadband wireless and insert air-interface standard and mobile broadband wireless access air-interface standard, wherein 802.16,802.16a, 802.16d belong to the fixed wireless access air-interface standard, inserts aerial standard and 802.16e belongs to mobile broadband wireless.
IEEE 802.16MAC layer is based on " connection ", i.e. all terminal data service and relevant therewith qos requirement are based on all that " connection " carry out.Each " connection " comes unique the sign by an identifier (CID).In 802.16 standards, media interviews control (Medium AccessControl is called for short " MAC ") layer has defined comparatively complete QOS mechanism.The MAC layer can be provided with different qos parameters respectively at each connection, comprises indexs such as speed, time-delay.
IEEE 802.16MAC supports comparatively disadvantageous user environment, can deal with on each channel, have hundreds and thousands of users applied environment, support different traffic carrying capacitys such as continous way and burst type.It has asynchronous transfer mode (Asynchronous Transfer Mode, be called for short " ATM ") convergence sub-layer and grouping convergence sub-layer, after being handled through convergence sub-layer, a plurality of high level datas unit is packaged into a Medium Access Control (MAC) Protocol Data Unit (Protocol Data Unit, be called for short " PDU ") send, can realize protocol transparency to ATM, IP and Ethernet service.
At present, IEEE 802.16 is imperfect as yet, wherein, does not propose practical target BS addressing method.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method for addressing target base station in a kind of radio city domain net system switching process, makes can be addressed to target BS in the wireless MAN handoff procedure.
For achieving the above object, the invention provides the method for addressing target base station in a kind of radio city domain net system switching process, pass through a pair of physics and media interviews control and treatment entity in the unique representative of the Base Station Identification base station in the described system, described Base Station Identification comprises the first of unique identification Operation Network, the second portion of an access service network gateway in the same Operation Network of unique identification, the third part of a pair of physics and media interviews control and treatment entity in the same access service network gateway of unique identification, wherein first accounts for 24 bits, second and third part account for 24 bits altogether;
Described method comprises one of following steps or its combination in any:
Carry out the addressing of target Operation Network according to the first of described Base Station Identification;
Carry out the addressing of target access service network gateway according to the second portion of described Base Station Identification;
Carry out the addressing of target BS according to the third part of described Base Station Identification.
Wherein, when base station or access service network gateway obtain low 24 bits of Base Station Identification of target BS, comprise following steps:
From low 24 bits of described Base Station Identification, parse the second portion of this Base Station Identification, and compare with the sign of current access service network gateway;
If the second portion of described Base Station Identification is consistent with the sign of current access service network gateway, then from low 24 bits of described Base Station Identification, parse the third part of Base Station Identification, and be addressed directly to target BS by current access service network gateway in view of the above;
If the sign of the second portion of described Base Station Identification and described access service network gateway is inconsistent, then search the neighboring access service network table that presets according to the second portion of described Base Station Identification, obtain the Operation Network sign and the routing iinformation of neighboring access service network, with the first of the Operation Network that obtained sign, and be addressed to target BS according to the routing iinformation that obtains as described Base Station Identification.
In this external described method, described access service network gateway obtains low 24 bits of the Base Station Identification of described target BS from following message:
Handoff request message or measurement report message from travelling carriage.
In this external described method, when access service network gateway obtains the Base Station Identification of complete target BS, comprise following steps:
The first of more described Base Station Identification and the sign of current Operation Network, if it is inconsistent, then the information of target BS is sent to the interface module or the interface access service network gateway of target Operation Network, finish further the addressing of target BS by the target Operation Network;
If the sign of the first of described Base Station Identification and current Operation Network is consistent, the then further second portion of more described Base Station Identification and the sign of current access service network gateway, if it is inconsistent, then the information with target BS sends to the target access service network gateway, is finished further the addressing of target BS by this target access service network gateway;
If the sign of the first of described Base Station Identification and current Operation Network is consistent, and the sign of the second portion of described Base Station Identification and current access service network gateway is consistent, then is addressed directly to target BS by local access service network gateway.
In this external described method, the second portion of described Base Station Identification accounts for 10 bits;
The third part of described Base Station Identification accounts for 14 bits.
In this external described method, wireless metropolitan area network system is a WiMax system.
In this external described method, described base station can comprise many to physics and media interviews control and treatment entity, the corresponding a plurality of Base Station Identifications in each described base station.
The present invention also provides the method for addressing target base station in a kind of radio city domain net system switching process, comprises following steps:
Base station or access service network gateway are when low 24 bits of the Base Station Identification of receiving target BS, and the configuration data that presets of inquiry in view of the above therefrom obtains the routing iinformation of target BS, and according to this routing iinformation data is sent to target BS;
Described Base Station Identification comprises the first of unique identification Operation Network, and described first accounts for 24 bits; Low 24 bits of described Base Station Identification comprise two parts: the third part of interior a pair of physics of the second portion of an access service network gateway and the same access service network gateway of unique identification and media interviews control and treatment entity in the same Operation Network of unique identification.
Wherein, described configuration data is in advance according to the routing iinformation of the adjacent base station of network planning configuration, is disposed in described base station or the access service network gateway, or is disposed in the third party device.
In this external described method, described base station or access service network gateway obtain low 24 bits of the Base Station Identification of described target BS from following message:
Handoff request message or measurement report message from travelling carriage.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, low 24 bits of BSID are divided into two sections, wherein one section is used for an interior ASN_GW of the same Operation Network of unique identification, and another section is used for the same ASN_GW subordinate's of unique identification a pair of physics and MAC processing entities.Represent that section of ASN_GW can get 10 bits, another section can be got 14 bits.During addressing, can be according to high 24 addressing of carrying out the target Operation Network of BSID, two sections addressing of carrying out target ASN_GW and target BS respectively in low 24.
In addition, can also be in BS and ASN_GW the route information table of pre-configured neighbor bss, from from low 24 that get BSID wherein the handoff request message of travelling carriage or the measurement report message, tabling look-up in view of the above obtains the routing iinformation of neighbor bss.
Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly because, wherein increased the ASN_GW identifying information the hanging down 24 and be divided into two sections of BSID, so can judge easily whether target BS belongs to current ASN_GW, thereby make things convenient for addressing.In the neighbor bss table of BS or ASN_GW, no longer need to preestablish the routing iinformation of each BS,, thereby saved the memory space of routing iinformation as long as set the routing iinformation of each ASN_GW, the list item that need compare when having reduced inquiry has improved search efficiency.
Because just low 24 to BSID divide, thus can with IEEE 802.16e in to the definition compatibility of BSID.
Description of drawings
Fig. 1 is the end-to-end reference model of WiMAX;
Fig. 2 is the reference model of ASN;
Fig. 3 is that BSID divides schematic diagram in the agreement of existing IEEE 802.16e;
Fig. 4 is that BSID divides schematic diagram among the present invention;
Fig. 5 is the method flow schematic diagram according to addressing target BS in the WMAN net system switching process of the first embodiment of the present invention;
Fig. 6 is the method flow schematic diagram of addressing target BS in according to a second embodiment of the present invention the WMAN net system switching process;
Fig. 7 is the method flow schematic diagram of addressing target BS in the WMAN net system switching process of a third embodiment in accordance with the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Generally speaking, the principle of addressing target BS method is in the WMAN net system switching process that the present invention proposes, and represents a pair of PHY﹠amp among the BS by Global BSID is unique in the system; The MAC processing entities.And Global BSID comprises three parts.First is Operator ID, and its unique identification Operation Network accounts for 24 bits; Second portion is ASN_GW ID, ASN_GW in the same Operation Network of its unique identification; Third part is Sector ID, a pair of PHY﹠amp in the same ASN_GW of its unique identification; The MAC processing entities, second and third part account for 24 bits altogether.Above division and IEEE802.16e structurally are compatible.
The present invention can be referring to following formula to the definition of Global BSID:
Global BSID=Operator ID (first)+ASN_GW ID (second portion)+Sector ID (third part)
The formation of Global BSID can be referring to Fig. 4.
The present invention utilizes top partition structure, when switching BS is carried out addressing.Specifically, carry under the condition in above-mentioned division, the present invention carries out the addressing of target Operation Network according to the first of Global BSID, carries out the addressing of target ASN_GW according to the second portion of Global BSID, carries out the addressing of target BS according to the third part of GlobalBSID.
As seen,, wherein increased the ASN_GW identifying information because low 24 of Global BSID are divided into two sections, thus can judge easily whether target BS belongs to current ASN_GW, thus made things convenient for addressing.And, in the neighbor bss table of BS or ASN_GW, no longer need to preestablish the routing iinformation of each BS, as long as set the routing iinformation of each ASN_GW, thereby saved the memory space of routing iinformation, the list item that need compare when having reduced inquiry has improved search efficiency.Meanwhile because just low 24 of BSID are divided, so can with IEEE 802.16e in to the definition compatibility of BSID.
Before embodiments of the invention are described, following problem is described earlier.
BSID at 48 bits that adopted at present defines as Fig. 3, and promptly Global BSID is divided into two parts, and first is Opertaor ID, accounts for 24 bits, and second portion is Local BSID, accounts for 24 bits.As seen the third part Sector ID of the Global BSID among the present invention and second step are divided ASN_GW ID 24 bits altogether, and be consistent with the Local BSID of former definition,
BSID for indication in the agreement need do an explanation, and that is exactly that BSID is meant sign to a pair of PHY in the base station and MAC processing entities just to have a plurality of PHY and MAC processing entities in a website, so just corresponding a plurality of BSID.
Fig. 5 illustrates the method according to addressing target BS in the WMAN net system switching process of the first embodiment of the present invention, and wherein, the WMAN system can be the WiMAX system.
In the present embodiment, at first in step 510: travelling carriage reports handoff request message or measurement report message, wherein comprises low 24 of BSID, and, the second portion ASN_GW ID of BSID can account for 10 bits, and the third part Sector ID of BSID can account for 14 bits.
Then, parse ASN_GW ID at step 520:BS/ASN_GW from low 24 of BSID.In the present invention, ASN GW can be from low 24 bits of the BSID that obtains target BS from the handoff request message or the measurement report message of travelling carriage.
After this, enter step 530: whether ASN_GW ID that parses and the ID of current ASN_GW be consistent, if consistent, then enter step 540, otherwise enter step 550.
In step 540: from BSID, parse Sector ID, be addressed directly to target BS by local ASN_GW in view of the above.
In step 550: search neighboring AS N table according to ASN_GW ID, obtain Operator ID and the routing iinformation of neighboring AS N.
Then, in step 560: be addressed to target BS according to routing iinformation.
It is pointed out that in the present embodiment BS can comprise many to PHY﹠amp; The MAC processing entities, each BS can corresponding a plurality of BSID.
Fig. 6 illustrates the method for addressing target BS in according to a second embodiment of the present invention the WMAN net system switching process, and wherein the WMAN system also is the WiMAX system.
As shown in the figure, at first, obtain 48 BSID at step 610:ASN_GW.Wherein, the second portion ASN_GW ID of BSID can account for 10 bits, and third part Sector ID can account for 14 bits.
Then, in step 620: judge whether the Operator ID that parses among the BSID is identical with the Operator ID of current Operation Network, if identical, then enters step 630, otherwise, enter step 660.
Whether ASN_GW ID that parses in step 630:BSID and the ID of current ASN_GW be consistent, if consistent, then enters step 640, otherwise, enter step 650.
In step 640: be addressed directly to target BS by local ASN_GW.
In step 650: target BS information is sent among the corresponding target ASN_GW, finish further the addressing of target BS by target ASN_GW.
In addition, in step 660: the information of target BS is sent to the interface module or the interface ASN_GW of target Operation Network, finish further the addressing of target BS by the target Operation Network.
Identical with first embodiment, BS can comprise many to PHY﹠amp; The MAC processing entities, each BS can corresponding a plurality of BSID.
Fig. 7 illustrates the method for addressing target BS in the WMAN net system switching process of a third embodiment in accordance with the invention, is different from above-mentioned first and second embodiment, and present embodiment is finished addressing to target BS by the mode of configuration.
As shown in the figure, at first, in step 710: the routing iinformation that in BS or ASN_GW, disposes neighbor bss in advance according to the network planning.
Then, in step 720: travelling carriage reports handoff request message or measurement report message, wherein comprises low 24 of BSID.
After this, in step 730: inquire about the configuration data that presets, obtain the routing iinformation of target BS.It is pointed out that above-mentioned configuration data is in advance according to the routing iinformation of the neighbor bss of network planning configuration, configurable in this BS or ASN_GW, or be disposed in the third party device.
At last, in step 740: data are sent to target BS according to routing iinformation.
In the present embodiment, BS or ASN_GW can obtain low 24 bits of the BSID of target BS from following message: from the handoff request message or the measurement report message of travelling carriage.
Generally speaking, the present invention is divided into two sections with low 24 bits of BSID, wherein one section ASN_GW that is used in the same Operation Network of unique identification has increased by one section a pair of physics and MAC processing entities that is used for the same ASN_GW subordinate of unique identification in addition.During addressing, can be according to high 24 addressing of carrying out the target Operation Network of BSID, two sections addressing of carrying out target ASN_GW and target BS respectively in low 24.So can judge easily whether target BS belongs to current ASN_GW, thereby make things convenient for addressing.In the neighbor bss table of BS or ASN_GW, no longer need to preestablish the routing iinformation of each BS,, thereby saved the memory space of routing iinformation as long as set the routing iinformation of each ASN_GW, the list item that need compare when having reduced inquiry has improved search efficiency.
In addition, can also be in BS and ASN_GW the route information table of pre-configured neighbor bss, from from low 24 of BSID in getting the handoff request message of travelling carriage or the measurement report message, tabling look-up in view of the above obtains the routing iinformation of neighbor bss.
Though by with reference to some preferred embodiment of the present invention, the present invention is illustrated and describes, those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. the method for addressing target base station in the radio city domain net system switching process, in the described system by a pair of physics and media interviews control and treatment entity in the unique representative of the Base Station Identification base station,
It is characterized in that, described Base Station Identification comprises the first of unique identification Operation Network, the second portion of an access service network gateway in the same Operation Network of unique identification, the third part of a pair of physics and media interviews control and treatment entity in the same access service network gateway of unique identification, wherein first accounts for 24 bits, second and third part account for 24 bits altogether;
Described method comprises following steps:
Carry out the addressing of target Operation Network according to the first of described Base Station Identification;
Carry out the addressing of target access service network gateway according to the second portion of described Base Station Identification;
Carry out the addressing of target BS according to the third part of described Base Station Identification.
2. the method for addressing target base station is characterized in that in the radio city domain net system switching process according to claim 1, when base station or access service network gateway obtain low 24 bits of Base Station Identification of target BS, comprises following steps:
From low 24 bits of described Base Station Identification, parse the second portion of this Base Station Identification, and compare with the sign of current access service network gateway;
If the second portion of described Base Station Identification is consistent with the sign of current access service network gateway, then from low 24 bits of described Base Station Identification, parse the third part of Base Station Identification, and be addressed directly to target BS by current access service network gateway in view of the above;
If the sign of the second portion of described Base Station Identification and described access service network gateway is inconsistent, then search the neighboring access service network table that presets according to the second portion of described Base Station Identification, obtain the Operation Network sign and the routing iinformation of neighboring access service network, with the first of the Operation Network that obtained sign, and be addressed to target BS according to the routing iinformation that obtains as described Base Station Identification.
3. the method for addressing target base station is characterized in that in the radio city domain net system switching process according to claim 2, and described access service network gateway obtains low 24 bits of the Base Station Identification of described target BS from following message:
Handoff request message or measurement report message from travelling carriage.
4. the method for addressing target base station is characterized in that in the radio city domain net system switching process according to claim 1, when access service network gateway obtains the Base Station Identification of complete target BS, comprises following steps:
The first of more described Base Station Identification and the sign of current Operation Network, if it is inconsistent, then the information of target BS is sent to the interface module or the interface access service network gateway of target Operation Network, finish further the addressing of target BS by the target Operation Network;
If the sign of the first of described Base Station Identification and current Operation Network is consistent, the then further second portion of more described Base Station Identification and the sign of current access service network gateway, if it is inconsistent, then the information with target BS sends to the target access service network gateway, is finished further the addressing of target BS by this target access service network gateway;
If the sign of the first of described Base Station Identification and current Operation Network is consistent, and the sign of the second portion of described Base Station Identification and current access service network gateway is consistent, then is addressed directly to target BS by local access service network gateway.
5. according to the method for addressing target base station in each described radio city domain net system switching process in the claim 1 to 4, it is characterized in that the second portion of described Base Station Identification accounts for 10 bits;
The third part of described Base Station Identification accounts for 14 bits.
6. according to the method for addressing target base station in each described radio city domain net system switching process in the claim 1 to 4, it is characterized in that wireless metropolitan area network system is a WiMAX system.
7. according to the method for addressing target base station in each described radio city domain net system switching process in the claim 1 to 4, it is characterized in that, described base station comprises many to physics and media interviews control and treatment entity, and each is identified by the third part in the Base Station Identification entity.
8. the method for addressing target base station in the radio city domain net system switching process is characterized in that, comprises following steps:
Base station or access service network gateway are when low 24 bits of the Base Station Identification of receiving target BS, and the configuration data that presets of inquiry in view of the above therefrom obtains the routing iinformation of target BS, and according to this routing iinformation data is sent to target BS;
Described Base Station Identification comprises the first of unique identification Operation Network, and described first accounts for 24 bits; Low 24 bits of described Base Station Identification comprise two parts: the third part of interior a pair of physics of the second portion of an access service network gateway and the same access service network gateway of unique identification and media interviews control and treatment entity in the same Operation Network of unique identification.
9. the method for addressing target base station in the radio city domain net system switching process according to claim 8, it is characterized in that, described configuration data is in advance according to the routing iinformation of the adjacent base station of network planning configuration, be disposed in described base station or the access service network gateway, or be disposed in the third party device.
10. the method for addressing target base station according to Claim 8 or in the 9 described radio city domain net system switching process is characterized in that, described base station or access service network gateway obtain low 24 bits of the Base Station Identification of described target BS from following message:
Handoff request message or measurement report message from travelling carriage.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6178164B1 (en) * | 1996-06-07 | 2001-01-23 | Qualcomm Incorporated | Method and apparatus for performing idle handoff in a multiple access communication system |
| CN1365587A (en) * | 1999-07-30 | 2002-08-21 | 高通股份有限公司 | System for tracking base stations in a wireless communication network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6178164B1 (en) * | 1996-06-07 | 2001-01-23 | Qualcomm Incorporated | Method and apparatus for performing idle handoff in a multiple access communication system |
| CN1365587A (en) * | 1999-07-30 | 2002-08-21 | 高通股份有限公司 | System for tracking base stations in a wireless communication network |
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