CN101577928B - Calling/switching-in receiving method of GSM micro-micro base stations/micro-micro-micro base stations - Google Patents
Calling/switching-in receiving method of GSM micro-micro base stations/micro-micro-micro base stations Download PDFInfo
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Abstract
The invention discloses a calling/switching-in receiving method of GSM micro-micro base stations/micro-micro-micro base stations. The method comprises the following steps: configuring a plurality of micro-micro base stations/micro-micro-micro base stations configured by adopting the same frequency in a BSC side into a logical subdistrict, distributing a subdistrict identification for the logical subdistrict, storing a mapping relation between the logical subdistrict identification and the physical identification of the micro-micro base stations/micro-micro-micro base stations in BSC, and carrying out the interaction of signals and information by using the logical subdistrict identification in the communication of the BSC and a service support node of MSC and GPRS, i.e. the MSC and SGSN do not need to know about the mapping relation between the logical subdistrict identification and the actual physical identification of the micro-micro base stations/micro-micro-micro base stations, thereby the problem of logical subdistrict management when the micro-micro base stations/micro-micro-micro base stations are applied in large scale in a network is solved.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to the method for a kind of GSM (Global System for MobileCommunication, global system for mobile communications) femto base station/atto base station receipt of call and incision.
Background technology
The logic district management method that extensively adopts in the prior art is following: same zone be in continuous covering or physically near two or more base stations be set to identical logic district; These base stations have identical BCCH (Broadcast Control Channel; BCCH) and the control channel form, pilot burst, synchronization burst and BCCH etc. send or are only sent by the part base station in the identical slot synchronization of all base stations.These physical base station need keep the precise synchronization of frame and multi-frame.
When the covering of base station was overlapping basically, control channel message such as pilot burst, synchronization burst and BCCH can only be launched by certain base station; When the covering of base station intersects each other; Need all these information of synchronized transmission of each base station; Also need BTS (Base-station Transceiver Station, base transceiver station) that MS (Mobile Station, travelling carriage) is carried out up signal measurement to understand the position of MS in addition.
Along with the continuous development of GSM network and the continuous increase of network traffic; The covering of GSM network more and more develops to the direction of multi-level covering, the crossings on different level layering overlay network of promptly being made up of jointly macrocellular, microcellulor, Pico cell and even atto honeycomb.
Along with micromicro honeycomb base station and a large amount of uses of atto cellular basestation (for example domestic. applications type product) in network; If independent cell number is all used in the base station to each website; Will give BSS (Base-station Sub-System; Base station sub-system) and management of the cell management of MSC (Mobile Switch Center, mobile switching centre), adjacent area and lane place management etc. bring very large impact.Thus, physically independently femto base station or atto base station are logically included a sub-district in and are managed very necessary with a plurality of.
If adopting the logic district management method of above-mentioned prior art manages femto base station/atto base station; Since cell id corresponding in esse a plurality of femto base stations/atto base station, therefore when MS is arranged in receipt of call under certain femto base station of logic district/atto base station and realizes incision BSS how accurately to locate the coverage that this MS is positioned at which femto base station/atto base station be the problem that needs the emphasis consideration.Femto base station/atto base station possibly be scattered in the GSM network everywhere, do not intersect each other and the installation site of femto base station/atto base station fixing, may be moved at any time; This moment because, the first, be difficult to judge that which femto base station/atto base station is in the adjacent position; The second, a large amount of femto base station/atto base station is also non-conterminous in fact, and the 3rd; Can't accomplish precise synchronization between femto base station/atto base station; The 4th, all BTS in the logic district need be very big to the live load that the upward signal of all MS is measured, and the 5th; Need BTS to carry out reasons such as Automatic Frequency Planning, therefore the logic district management method of above-mentioned prior art also not exclusively is suitable for using in a large number in the network femto base station/atto base stations to carry out the scene of networking.
Summary of the invention
The present invention provides the method for a kind of GSM femto base station/atto base station receipt of call and incision, the problem of carrying out the logic district management when solving large-scale application femto base station in the network/atto base station.
Technical scheme according to the invention comprises:
The method of a kind of GSM femto base station/atto base station receipt of call comprises step:
A, base station controller paging receiving message carry the sign of called mobile station and the sign of place logic district thereof in this beep-page message, all femto base stations/atto base station broadcast of base station controller under this logic district sends this beep-page message;
This beep-page message is sent in B, all femto base stations/atto base station broadcasting in self coverage of receiving beep-page message, and called mobile station is replied page-response message to current place femto base station/atto base station;
C, receive that femto base station/atto base station of page-response message reports this message to base station controller, base station controller requires other femto base stations/atto base station in the said logic district to stop paging operation.
In advance several being adopted femto base station/atto base station configuration of same frequency configuration is a logic district; For it distributes corresponding logic district sign, preserve the mapping relations between the physical label of logic district sign and femto base station/atto base station in base station controller inside.
Adopt same frequency configuration to refer to: pilot burst, synchronization burst and BCCH and the CCCH carrier frequency of identical carrier frequency as oneself used in femto base station/atto base station; And adopting identical control channel structure, Separate Dedicated Control Channel uses identical wireless channel structure.
Use the logic district sign to carry out the mutual of signaling and message between base station controller and radio network controller and the GPRS serving GPRS support node.
The method of a kind of GSM femto base station/atto base station incision comprises step:
A, base station controller receive handoff request message; Carry the sign of target logic sub-district in this message; All femto base stations/atto base station transmitting channel of base station controller under the target logic sub-district activates request, carries promising this in the request and switches the descriptor of the switching access channel that distributes;
B, base station controller delay in the channel activation confirmation message of receiving all femto base stations/atto base station or when preset; Reply switching request acknowledgement message to mobile switching centre; Mobile switching centre initiates travelling carriage transmission switching command to switching, and carries the descriptor of said switching access channel in the order;
C, switching are initiated travelling carriage and on the switching access channel, are sent switching access message; Receive that femto base station/atto base station of this message detects the message of switching to the base station controller transmission; Initiate travelling carriage transmission physical channel assignment message to switching simultaneously, switch the initiation travelling carriage and send handoff completion message to base station controller through this femto base station/atto base station.
Also comprise step behind the said step C:
Base station controller activates message to femto base station/atto base station transmitting channel of travelling carriage incision, requires to distribute other Traffic Channel, and channel activation confirmation message is replied to base station controller in femto base station/atto base station after activating channel;
Base station controller lets travelling carriage switch on the newly assigned Traffic Channel to travelling carriage transmitting channel assignment commands, and travelling carriage sends request for building link to femto base station/atto base station on newly assigned Traffic Channel;
The link setup Indication message is sent to base station controller in femto base station/atto base station, and replys the link setup acknowledge message to travelling carriage, and travelling carriage sends to base station controller through newly assigned Traffic Channel and assigned message.
Also comprise step before the said steps A:
Travelling carriage sends measurement report to the base station controller of cell-of-origin, and the base station controller of cell-of-origin carries out switching judging, when meeting switching condition, initiates handoff request to mobile switching centre, carries the sign of target logic sub-district in the request;
Mobile switching centre finds the base station controller that is subordinate to according to the sign of target logic sub-district, sends handoff request to it.
In advance several being adopted femto base station/atto base station configuration of same frequency configuration is a logic district; For it distributes corresponding logic district sign, preserve the mapping relations between the physical label of logic district sign and femto base station/atto base station in base station controller inside.
Femto base station/atto base station in the same logic district is non-conterminous.
Use the logic district sign to carry out the mutual of signaling and message between base station controller and radio network controller and the GPRS serving GPRS support node.
Beneficial effect of the present invention is following:
Technical scheme according to the invention is one " logic district " through in the BSC side, several being adopted femto base station/atto base station configuration of same frequency configuration; And distribute a cell ID for it, the mapping relations between the inner physical label of preserving logic district sign and femto base station/atto base station of BSC.BSC with the communicating by letter of MSC and GPRS serving GPRS support node in use the logic district sign carry out signaling and message alternately; Be that MSC and SGSN need not understand the mapping relations between logic district sign and the actual femto base station/atto base station physical sign, thus the problem of carrying out the logic district management when solving large-scale application femto base station in the network/atto base station.
Description of drawings
Fig. 1 is the division sketch map of logic district in the instance according to the invention;
Fig. 2 is the flow chart of the femto base station receipt of call in the logic district shown in Figure 1;
Fig. 3 is the flow chart of the femto base station incision in the logic district shown in Figure 1.
Embodiment
Major technique of the present invention is conceived as follows:
In BSC (Base Station Controller, base station controller) side, several being adopted femto base station/atto base station configuration of same frequency configuration is one " logic district ", and distributes a cell ID (logic CGI) for it.Adopt same frequency configuration to refer to: pilot burst, synchronization burst and BCCH channel of broadcast control and the CCCH CCCH carrier frequency of identical carrier frequency as oneself used in femto base station/atto base station; And adopting identical control channel structure, Separate Dedicated Control Channel SDCCH also need use identical wireless channel structure.
Mapping relations between the physical label of the inner preservation of BSC logic district sign and femto base station/atto base station.BSC is connected with MSC through the standard A interface; Through standard Gb Interface and SGSN (Serving GPRS Support Node; The GPRS serving GPRS support node) equipment connects; In A interface and Gb Interface all signaling process and message definition, all use logic district sign (logic CGI) to carry out the mutual of signaling and message, promptly MSC and SGSN need not understand logic district sign and the actual femto base station/atto base station physical mapping relations between identifying.
Because the BSC side is preserved the mapping relations of logic district sign and actual femto base station/atto base station physical sign; Therefore when breathing out under any femto base station/atto base station of MS in " logic district " or during the renewal of position; BSC can through and femto base station/atto base station between interior signaling (Abis interface) obtain that MS makes a call or the physical label of femto base station/atto base station that the position is upgraded; Obtain corresponding logic district sign through the query mappings relation then; It is mutual in the signalling interactive process of A interface and Gb Interface, to use the logic district sign to carry out, and its signalling interactive process and normal condition are as broad as long.
And be under the connection status as MS, it is all as broad as long and the normal process mode has obvious difference is the scene of paging and incision with normal condition that it cuts out operation and Network Assisted Cell Change, explains respectively below:
During the femto base station of MS under " logic district "/atto base station receipt of call, BSC receives the beep-page message from MSC, carries the sign (IMSI or TMSI) of " logic district sign " and paged travelling carriage in the message.All femto base stations/atto base station broadcast of BSC under " logic district " sends beep-page message, up to receiving that the channel from certain femto base station/atto base station inserts response.
MS is from the femto base station of other base station cells under " logic district "/when switch atto base station; BSC receives handoff request (Handover Request) message from MSC; The cell-of-origin sign of carrying " target logic cell ID " in the message and initiating to switch; Which concrete physics femto base station/atto base station MS need be cut into because BSC this moment can't know for sure; Therefore need this moment all femto base stations/atto base station of BSC in " logic district " to send the message (like " RSMCHANNEL ACTIVE ") that activates wireless channel; Require femto base station/atto base station assigns in this message and use identical wireless channel configuration, all femto base stations under this logic district/atto base station will keep switching access (Handover Access) message that identical radio channel resource is used for monitoring MS afterwards; After receiving a channel activation confirmation message of all femto base stations/atto base station (like " RSM CHANNEL ACTIVEACK ") or a fixed response time, reply Handover Request Acknowledge (Handover Request Ack) message to MSC.Afterwards; MS can go up to send to switch and insert (Handover Access) message at the FACCH of certain femto base station/atto base station (Fast Associated Control Channel); Thereby only certain femto base station/atto base station can receive this message; And message passed through BSC, thereby BSC can obtain the information of MS from which physics femto base station/atto base station incision, finally accomplishes switching flow.
Among the present invention, because identical wireless channel configuration is used in all femto base stations in the same logic district/atto base station, in order to prevent the phase mutual interference, the femto base station of same logic district/atto base station should be non-conterminous as far as possible.
Among the present invention,, in the handoff procedure of mobile phone, need BSC that the Radio Resource under " logic district " is carried out unified management, so that make all femto base stations have the channel that identical supplied MS inserts in order to realize the incision of mobile phone effectively.Concrete implementation method is: define certain channel for switching access channel; The switching of all MS all from then on channel insert, " switching access channel " in fact be exactly let channel that all femto base stations in the logic district all reserve an identical parameters configuration (identical frequency and time slot) to MS incision use.Insert inner switching flow of the rapid initiation of back BSC MS is switched to other channels, discharge this channel and use as the switching access of other MS.Such as, BSC can keep for handoff procedure to use with " switching access channel " specially, does not allow MS when the inner switching of incoming call, exhalation and femto base station, to take this channel.
Through an instantiation the concrete implementation procedure of the method for GSM femto base station according to the invention/atto base station receipt of call and incision is done further detailed explanation below.
See also Fig. 1, this figure is the division sketch map of logic district in the instance according to the invention, and by visible among the figure, femto base station Femto2, Femto3, Femto9 and Femto10 are in the overlay area of macrocell A; Femto1,2,3,4,5,6,7,8,12,13,14,15,16 is in the overlay area of macrocell B.
Femto1,8,13 BCCH adopt frequency 1, belong to logic district 1.Femto2,6,12 BCCH adopt frequency 2, belong to logic district 2.Femto3,7,9,14,16 BCCH adopt frequency 3, belong to logic district 3.
Preserve the mapping relations of the physical label of logic district sign and femto base station among the BSC, as follows:
Logic district 1:Femto1, Femto8, Femto13;
Logic district 2:Femto2, Femto6, Femto12;
Logic district 3:Femto3, Femto7, Femto9, Femto14, Femto16.
Wherein, logic district uses CGI to identify, and the physical label of femto base station can identify according to the access address of femto base station, base station sequence number etc.
See also Fig. 2, this figure is the flow chart of the femto base station receipt of call in the logic district shown in Figure 1, and its main implementation procedure is following:
Femto base stations all under step 12, the logic district all send beep-page message in wireless side broadcasting.
See also Fig. 3, this figure is the flow chart of the femto base station incision in the logic district shown in Figure 1, and its main implementation procedure is following:
Step 20, MS send measurement report to the BSC of macrocell B; Owing to " logic district " 3 is configured to the adjacent area of macrocell B; Therefore the BCCH signal strength information that includes " logic district " 3 in this report, the metrical information of " logic district " 3 that report of MS is the measurement data of carrying out to femto base station Femto7 here.
The BSC of step 21, macrocell B carries out switching judging, when meeting switching condition, initiates handoff request to MSC, carries the logic district sign of " logic district " 3 in the request.
Step 22, MSC find the BSC that is subordinate to according to the logic district sign of " logic district " 3, send handoff request to this BSC, carry the logic district sign of " logic district " 3 in the request.
After the BSC of step 23, management femto base station Femto7 received the handoff request from MSC, all femto base stations under logic district 3 sent " channel activation " request.
The channel that carries fixed allocation in " channel activation " request is described; For example; BSC is appointed as the TS1 of frequency 3 " switching access channel ", requires the femto base station under this all logic district to force distribution to be somebody's turn to do the access that " switching access channel " is used for receiving MS.
All femto base stations under step 24, the logic district 3 are replied channel activation confirmation message to BSC after activating channel.
Step 25, BSC reply switching request acknowledgement message to MSC.
Step 26, MSC initiate switching command message through the BSC of macrocell B to MS.Carry the switching access channel descriptor of switching the purpose sub-district in the order.
Step 27, MS because MS is in the overlay area of Femto7, therefore only have the Femto7 base station can on the switching channels of stipulating, receive the switching access message of MS switching initiation switching access message on the access channel.
After step 28, Femto7 received and switch access message, the message that will " detect switching " sent to BSC.
Step 29, Femto7 send the physical channel assignment message to MS.
Step 30, MS send " switch and accomplish " message through femto base station Femto7 and BSC to MSC.
The BSC of step 31, femto base station needs at once MS to be switched to other Traffic Channels, therefore need send " channel activation " message to femto base station Femto7, requires to distribute and activate other Traffic Channel.
Step 32, femto base station Femto7 reply channel activation confirmation message and give BSC after activating channel.
Step 33, BSC send " channel assignment order " message through femto base station Femto7 to MS, let MS switch to other Traffic Channel.
Step 34, MS initiate SABM (Set Asynchronous Balance Mode, asynchronous balance mode in groups) on the channel that distributes, require to set up two layers of link.
After step 35, femto base station Femto7 receive SABM, send " link setup indication " message to BSC.
Step 36, femto base station Femto7 reply link setup to MS and confirm (UA) message.
Step 37, MS send " having assigned " message through newly assigned channel and give BSC, thereby accomplish inner the switching.
Introduced the notion of " switching access channel " in the above-mentioned changing method, in fact be exactly let channel that all femto base stations in the logic district all reserve an identical parameters configuration (identical frequency and time slot) to MS incision use.Occupied in order to prevent this " switching access channel ", when carrying out allocation of radio resources, need follow following principle:
When 1) MS initiates calling service, do not distribute this channel to use, perhaps when not having other available traffic channels, just distribute to MS and use to MS.
2) for the called service of MS, do not distribute this channel to use to MS, perhaps when not having other available traffic channels, just distribute to MS and use.
3) switch for the sub-district of MS is inner, do not distribute this channel to switch for the inside of MS.
4) cut from other sub-districts for MS, only distribute this channel to supply the MS incision to use.
5) for all take this channel calling (such as incision, because of do not have other resources can distribute take), in case other idle channel resources are arranged, then through the inner switching flow in sub-district calling is assigned to other channels at once.
6) this channel does not use as the grouped channels resource of GPRS or EGPRS.
In general, only need distribute a channel resource to use as " switching access channel ".But; Because the relation of " switching concurrency conflict "; Be to exist the femto base station of a plurality of MS under same " virtual subdistrict " to cut the same time,, possibly need the more than one channel of assignment to be used in " switching access channel " specially for preventing because of conflict causes switching time long.The management of a plurality of " switching access channels " and single " switching access channel " are similar, only are that BSC then can distribute other idle access channel to use to MS as finding that certain switching access channel discharges as yet when distributing the switching access channel.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1. the method for GSM femto base station/atto base station receipt of call is characterized in that, comprises step:
A, base station controller paging receiving message carry the sign of called mobile station and the sign of place logic district thereof in this beep-page message, all femto base stations/atto base station broadcast of base station controller under this logic district sends this beep-page message;
This beep-page message is sent in B, all femto base stations/atto base station broadcasting in self coverage of receiving beep-page message, and called mobile station is replied page-response message to current place femto base station/atto base station;
C, receive that femto base station/atto base station of page-response message reports this message to base station controller, base station controller requires other femto base stations/atto base station in the said logic district to stop paging operation;
In advance several being adopted femto base station/atto base station configuration of same frequency configuration is a logic district; For it distributes corresponding logic district sign, preserve the mapping relations between the physical label of logic district sign and femto base station/atto base station in base station controller inside;
Adopt same frequency configuration to refer to: pilot burst, synchronization burst and BCCH and the CCCH carrier frequency of identical carrier frequency as oneself used in femto base station/atto base station; And adopting identical control channel structure, Separate Dedicated Control Channel uses identical wireless channel structure.
2. the method for claim 1 is characterized in that, uses the logic district sign to carry out the mutual of signaling and message between base station controller and radio network controller and the GPRS serving GPRS support node.
3. the method for GSM femto base station/atto base station incision is characterized in that, comprises step:
A, base station controller receive handoff request message; Carry the sign of target logic sub-district in this message; All femto base stations/atto base station transmitting channel of base station controller under the target logic sub-district activates request, carries promising this in the request and switches the descriptor of the switching access channel that distributes;
B, base station controller delay in the channel activation confirmation message of receiving all femto base stations/atto base station or when preset; Reply switching request acknowledgement message to mobile switching centre; Mobile switching centre initiates travelling carriage transmission switching command to switching, and carries the descriptor of said switching access channel in the order;
C, switching are initiated travelling carriage and on the switching access channel, are sent switching access message; Receive that femto base station/atto base station of this message detects the message of switching to the base station controller transmission; Initiate travelling carriage transmission physical channel assignment message to switching simultaneously, switch the initiation travelling carriage and send handoff completion message to base station controller through this femto base station/atto base station;
In advance several being adopted femto base station/atto base station configuration of same frequency configuration is a logic district; For it distributes corresponding logic district sign, preserve the mapping relations between the physical label of logic district sign and femto base station/atto base station in base station controller inside;
Adopt same frequency configuration to refer to: pilot burst, synchronization burst and BCCH and the CCCH carrier frequency of identical carrier frequency as oneself used in femto base station/atto base station; And adopting identical control channel structure, Separate Dedicated Control Channel uses identical wireless channel structure;
Femto base station/atto base station in the same logic district is non-conterminous.
4. method as claimed in claim 3 is characterized in that, also comprises step behind the said step C:
Base station controller activates message to femto base station/atto base station transmitting channel of travelling carriage incision, requires to distribute other Traffic Channel, and channel activation confirmation message is replied to base station controller in femto base station/atto base station after activating channel;
Base station controller lets travelling carriage switch on the newly assigned Traffic Channel to travelling carriage transmitting channel assignment commands, and travelling carriage sends request for building link to femto base station/atto base station on newly assigned Traffic Channel;
The link setup Indication message is sent to base station controller in femto base station/atto base station, and replys the link setup acknowledge message to travelling carriage, and travelling carriage sends to base station controller through newly assigned Traffic Channel and assigned message.
5. like claim 3 or 4 described methods, it is characterized in that, also comprise step before the said steps A:
Travelling carriage sends measurement report to the base station controller of cell-of-origin, and the base station controller of cell-of-origin carries out switching judging, when meeting switching condition, initiates handoff request to mobile switching centre, carries the sign of target logic sub-district in the request;
Mobile switching centre finds the base station controller that is subordinate to according to the sign of target logic sub-district, sends handoff request to it.
6. method as claimed in claim 3 is characterized in that, uses the logic district sign to carry out the mutual of signaling and message between base station controller and radio network controller and the GPRS serving GPRS support node.
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| CN200810094137A CN101577928B (en) | 2008-05-05 | 2008-05-05 | Calling/switching-in receiving method of GSM micro-micro base stations/micro-micro-micro base stations |
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| CN200810094137A CN101577928B (en) | 2008-05-05 | 2008-05-05 | Calling/switching-in receiving method of GSM micro-micro base stations/micro-micro-micro base stations |
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| CN101951650A (en) * | 2010-09-03 | 2011-01-19 | 华为技术有限公司 | Cell handover processing method and base station controller thereof |
| US9668178B2 (en) | 2011-12-21 | 2017-05-30 | Nokia Solutions And Networks Oy | Providing mobility control for local area networks |
| US9521567B2 (en) * | 2012-07-11 | 2016-12-13 | Lg Electronics Inc. | Method for performing measurement of terminal in wireless communication system and apparatus therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0902551A3 (en) * | 1997-09-12 | 2001-12-19 | Lucent Technologies Inc. | Soft handover system for a multiple sub-carrier communication system and method thereof |
| US7177656B2 (en) * | 2002-06-06 | 2007-02-13 | Alcatel | Method of synchronizing base stations interconnected by a local area network |
| CN101075848A (en) * | 2007-07-05 | 2007-11-21 | 华为技术有限公司 | System and method for synchronizing microcellular network basestation and base station |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0902551A3 (en) * | 1997-09-12 | 2001-12-19 | Lucent Technologies Inc. | Soft handover system for a multiple sub-carrier communication system and method thereof |
| US7177656B2 (en) * | 2002-06-06 | 2007-02-13 | Alcatel | Method of synchronizing base stations interconnected by a local area network |
| CN101075848A (en) * | 2007-07-05 | 2007-11-21 | 华为技术有限公司 | System and method for synchronizing microcellular network basestation and base station |
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