CN102143585A - Channel distribution method, base station controller and mobile station - Google Patents
Channel distribution method, base station controller and mobile station Download PDFInfo
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Abstract
The embodiment of the invention provides a channel distribution method, a base station controller and a mobile station, which have the advantage of correctly distributing a proper channel to the mobile station by the base station controller during initial accessing or cell handover. The method comprises the following steps of: acquiring packet switch domain capability of the mobile station when first circuit switch domain capability indication information or second circuit switch domain capability indication information transmitted by the mobile station comprises an identifier for supporting a CS (Circuit Switch) over GERAN (GSM Enhanced data rate for GSM evolution Radio Access Network) service by the mobile station; and distributing a CS over GERAN channel to the mobile station according to the circuit switch domain capability and the packet switch domain capability of the mobile station. Through the method, the base station controller and the mobile station, the circuit switch domain capability and the packet switch domain capability of the mobile station are timely learnt by the network side, so that the CS over GERAN channel is correctly distributed to the mobile station.
Description
Technical field
The present invention relates to the mobile communication technology field, be specifically related to a kind of method for channel allocation, base station controller and a kind of travelling carriage.
Background technology
CS over GERAN is a kind of at data rate raising type GSM service Radio Access Network (GERAN, GSM Enhanced data rate for GSM evolution Radio Access Network) goes up the professional technology of bearer circuit exchange (CS, Circuit Switch).For Radio Access Network, the introducing of CS overGERAN is influence eat dishes without rice or wine (Um Interface) and can not influence the A interface in fact only.Therefore, only, adopt CS over GERAN technology at an easy rate CS business (for example, speech business) to be carried on packet switching (PS by revising the air protocol stack, Packet Switch) on the network, thereby realizes professional and PS business the sharing on technology or resource of CS.
Fig. 1 and Fig. 2 show the basic procedure that travelling carriage in the Radio Access Network (MS, Mobile Station) inserts and cross base station controller (BSC, Base Station Controller) switches (for ease of explanation, only having provided key step) respectively.In flow process shown in Figure 1, a comparison critical step is that MS is provided with Asynchronous Balanced Mode (SABM by sending one, Set Asynchronous BalancedMode) frame reports the relevant ability of self so that BSC be that MS distributes suitable channel to carry out professional access according to the ability of should being correlated with to base station controller (through the base station), for example, the CS business is marked the relevant ability that (class-mark) reports MS by class, and the PS business then reports the relevant ability of MS by wireless access capability report (RadioAccess Capability Report).Similarly, in flow process shown in Figure 2, BSC
1(BSC of source base station subsystem) message sends to the (MSC of mobile switching centre will " switching requirement (Handover Required) ", Mobile Switch Centre) time, also comprise self the relevant ability that reports when MS inserts current area in " switch require " message, like this, MSC is transparent to BSC with the relevant ability of this MS
2After (BSC of subsystem of objective base station), BSC
2Relevant ability according to this MS is carried out professional access for it distributes suitable channel, thereby finishes the switching of striding BSC.
Because the introducing of CS over GERAN is for core net (CN, Core Network) without any change, therefore, according to the access process of above-mentioned MS business shown in Figure 1, BSC just can't distribute suitable channel (for example, CS over GERAN channel) for MS under initial the access; Equally, according to the switching flow of above-mentioned MS shown in Figure 2, the BSC of Target cell can be for MS distribute suitable channel (for example, CS over GERAN channel), and the relevant information of destination channel can't be passed MS back, and these all will cause handoff failure.
Summary of the invention
The embodiment of the invention provides a kind of method for channel allocation, base station controller and a kind of travelling carriage, and base station controller can be inserted or the correct suitable channel of distributing during switching cell initial for travelling carriage.
A kind of method for channel allocation, comprise: when comprising in the first circuit commutative field capability indication information that travelling carriage sends or the second circuit switching domain capability indication information that described travelling carriage is supported the professional sign of data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN), obtain the packet-switched domain ability of described travelling carriage; Circuit commutative field ability and described packet-switched domain ability according to described travelling carriage are that described travelling carriage distributes CS over GERAN channel.
A kind of method for channel allocation, comprise: when travelling carriage needs cross base station controller to switch, if described travelling carriage is supported data rate raising type GSM service Radio Access Network bearer circuit switching domain (CSover GERAN) business, the source base station controller sends handoff request message by mobile switching centre to target base station controller, the circuit commutative field capability indication information and the packet-switched domain ability that comprise described travelling carriage in the described handoff request message are so that described target base station controller is that described travelling carriage distributes CS over GERAN channel according to the circuit commutative field ability of described travelling carriage and packet-switched domain ability.
A kind of method for channel allocation, comprise: when travelling carriage needs cross base station controller to switch, target base station controller receives handoff request message, and described handoff request message contains the circuit commutative field capability indication information and the packet-switched domain ability of described travelling carriage; Described target base station controller is described travelling carriage distribute data speed raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) channel according to the circuit commutative field ability and the packet-switched domain ability of described travelling carriage.
A kind of base station controller, comprise: packet-switched domain ability acquisition module, the first circuit commutative field capability indication information or the second circuit switching domain capability indication information that are used for sending when travelling carriage comprise when described travelling carriage is supported the sign of data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS overGERAN) business, obtain the packet-switched domain ability of described travelling carriage; Channel assignment module, the packet-switched domain ability and the circuit commutative field ability that are used for the travelling carriage that obtains according to described packet-switched domain ability acquisition module are that described travelling carriage distributes CS over GERAN channel.
A kind of base station controller comprises: judge module is used to judge whether travelling carriage needs cross base station controller to switch; First sending module, when described judge module judges that travelling carriage needs cross base station controller to switch, if described travelling carriage is supported data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) business, send handoff request message by mobile switching centre to target base station controller, the circuit commutative field ability Indication message and the packet-switched domain ability that comprise described travelling carriage in the described handoff request message are so that described target base station controller is that described travelling carriage distributes CS over GERAN channel according to the circuit commutative field ability of described travelling carriage and packet-switched domain ability.
A kind of base station controller comprises: receiver module, be used for when travelling carriage needs cross base station controller to switch, and receive handoff request message, described handoff request message contains the circuit commutative field ability Indication message and the packet-switched domain ability of travelling carriage; Channel assignment module, the circuit commutative field ability and the packet-switched domain ability that are used for the travelling carriage that receives according to described receiver module are described travelling carriage distribute data speed raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) channel.
A kind of travelling carriage, comprise: transmitting element, be used for sending the first circuit commutative field capability indication information and second circuit switching domain capability indication information, comprise the sign that described travelling carriage support data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) is professional in described first circuit commutative field capability indication information or the described second circuit switching domain capability indication information to base station controller; Receiving element is used to receive the wireless access capability report reporting request that base station controller sends according to described sign; The packet-switched domain ability reports the unit, is used for reporting request to report the wireless access capability report to described base station controller according to the wireless capability that described receiving element receives, and comprises the packet-switched domain ability of described travelling carriage in the described wireless access capability report.
The ability Indication message that the embodiment of the invention reports by receiving mobile, after obtaining the relevant ability of this travelling carriage, base station sub-system correctly distributes CS over GERAN channel so that travelling carriage inserts or switch to the channel that is distributed smoothly.Compared with prior art, the present invention's circuit commutative field ability and packet-switched domain ability that can make network side in time understand travelling carriage is that travelling carriage correctly distributes CS over GERAN channel.When travelling carriage switches, the circuit commutative field ability and the packet-switched domain ability of travelling carriage passed through target base station controller, thereby can make travelling carriage switch to new CS over GERAN channel and unlikely interrupting service, improve user's impression.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the basic procedure schematic diagram that travelling carriage inserts in the prior art Radio Access Network;
Fig. 2 is the basic procedure schematic diagram that the prior art cross base station controller switches;
Fig. 3 is the method for channel allocation basic flow sheet that the embodiment of the invention one provides;
Fig. 4 is the structural representation of the class mark 2 (classmark2) that provides of the embodiment of the invention;
Fig. 5 is the structural representation of the class mark request message that provides of the embodiment of the invention;
Fig. 6 is Signalling exchange figure when mutual between the embodiment of the invention travelling carriage, base station sub-system and the three of mobile switching centre that provide;
Fig. 7 is a kind of method for channel allocation basic flow sheet that the embodiment of the invention two provides;
Fig. 8 is a kind of channel allocation basic procedure that the embodiment of the invention three provides;
Fig. 9 shows in the method for channel allocation that the embodiment of the invention two and embodiment three provide between travelling carriage, source base station subsystem, subsystem of objective base station and the mobile switching centre Signalling exchange figure when mutual;
Figure 10 is a kind of base station controller basic logical structure schematic diagram that the embodiment of the invention one provides;
Figure 11 is a kind of base station controller basic logical structure schematic diagram that the embodiment of the invention two provides;
Figure 12 is a kind of base station controller basic logical structure schematic diagram that the embodiment of the invention three provides;
Figure 13 is a kind of base station controller basic logical structure schematic diagram that the embodiment of the invention four provides;
Figure 14 is a kind of base station controller basic logical structure schematic diagram that the embodiment of the invention five provides;
Figure 15 is a kind of base station controller basic logical structure schematic diagram that the embodiment of the invention six provides;
Figure 16 is a kind of base station controller basic logical structure schematic diagram that the embodiment of the invention seven provides;
Figure 17 is a kind of travelling carriage basic logical structure schematic diagram that the embodiment of the invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
See also Fig. 3, the method for channel allocation basic flow sheet that the embodiment of the invention one provides mainly comprises:
Step S301 obtains the packet-switched domain ability of travelling carriage.
For travelling carriage, no matter carry out CS business or PS business, insert or access to network when preparing to carry out business initial by switching, network side (for example, base station controller etc.) all should know the relevant ability of travelling carriage, for example, circuit commutative field ability or packet-switched domain ability etc., so, network side just can distribute suitable channel for travelling carriage.
Because the essence of CS over GERAN (being called for short CoG) is (for example to utilize GERAN network carrying CS territory business, speech business), it is the fusion in CS territory and PS territory, therefore, system based on CS over GERAN, its network side also should obtain the packet-switched domain ability of travelling carriage except the circuit commutative field ability of obtaining travelling carriage.
In embodiments of the present invention, network side is by sending a request message to travelling carriage to ask this travelling carriage to report wireless access capability report (RACR, Radio Access Capability Report), know the packet-switched domain ability of travelling carriage then according to wireless access capability report.Before this, network side obtains the first circuit commutative field capability indication information that travelling carriage initiatively sends, for example, class mark 2 (CM2, Class-Mark2), and the second circuit switching domain capability indication information of receiving mobile transmission, for example class is marked 3 (CM3, Class-Mark3), wherein, second circuit switching domain capability indication information can be that travelling carriage initiatively sends or reports according to the request of network side.
When comprising in the first circuit commutative field capability indication information or the second circuit switching domain capability indication information that travelling carriage is supported the sign of CS over GERAN business, carry out S301.
Wherein, the first circuit commutative field capability indication information can be Class-Mark2 (class mark 2), form as shown in Figure 4, second circuit switching domain capability indication information can be Class-Mark3 (a class mark 3).
In embodiments of the present invention, the first circuit commutative field capability indication information or second circuit switching domain capability indication information can be indicated the circuit commutative field ability of travelling carriage, and the wireless access capability report can be indicated the packet-switched domain ability of travelling carriage.
Have among Class-Mark2 or the Class-Mark3 and be used for the identification field whether instruct MS supports CS over GERAN business.For example, whether the 7th (byte is a start bit with the 1st) " CS over GERAN Indicator " (being called for short " CoG Indicator ") of Class-Mark2 shown in Figure 4 the 5th byte can be supported the sign position of CS over GERAN business as instruct MS.For with former MS idle bit " 0 " compatibility, in the embodiment of the invention one, can not support CS over GERAN business with bit " 0 " sign, support CS over GERAN business with bit " 1 " sign.
Particularly, the network side packet-switched domain ability of obtaining travelling carriage has following four kinds of modes.
Mode one:
S11, the first circuit commutative field capability indication information that receiving mobile sends;
For CS over GERAN, this first circuit commutative field capability indication information can be to be included in travelling carriage to what the base station sent Asynchronous Balanced Mode (SABM to be set, Set Asynchronous Balanced Mode) in, the base station receives this SABM frame, resolve the back and comprise " setting up Indication message (Establishment Indication) " to the base station controller transmission, wherein comprise " class mark service request (CM Service Request) ", the first circuit commutative field capability indication information is loaded in this " class mark service request ", and base station controller can obtain the first circuit commutative field capability indication information by resolving " class mark service request ".
S12, if travelling carriage is supported CS over GERAN business, that is, the sign position of CS over GERAN business is " 1 ", then sending a request message to this travelling carriage reports second circuit switching domain capability indication information and wireless access capability report with the request travelling carriage;
For example, network side can report second circuit switching domain capability indication information and/or wireless access capability report with the request travelling carriage to the request message that travelling carriage sends such as " class mark request (Class Enquiry) "." structure of class mark request information wherein, can be defined as the 2nd (byte is a start bit with the 1st) of the 3rd byte the sign position that requires travelling carriage whether to report the RAC report as shown in Figure 5.In the embodiment of the invention one, when the home position was " 1 ", expression required travelling carriage to report the RAC report.
S13 is known the circuit commutative field ability of travelling carriage according to the first circuit commutative field capability indication information and second circuit switching domain capability indication information;
S14 is known the packet-switched domain ability of travelling carriage according to the wireless access capability report that receives.
Because the wireless access capability report can be indicated the packet-switched domain ability of a travelling carriage, therefore, can know the packet-switched domain ability of this travelling carriage according to the wireless access capability report that receives.
Mode two:
S21, receiving mobile therefrom parses the first circuit commutative field capability indication information by " setting up indication (EstablishmentIndication) " message that the SABM frame sends;
Network side can be by receiving " setting up indication " message, and parsing should " be set up indication ", and message obtains the first circuit commutative field capability indication information.In the present embodiment, message is to be sent according to the SABM frame that travelling carriage sends by the base station " to set up indication ", wherein comprise " class mark service request (CM ServiceRequest) ", the first circuit commutative field capability indication information is loaded in this " class mark service request (CM ServiceRequest) ", can obtain as long as resolve " setting up indication " message.
S22 sends a request message to ask this travelling carriage to report second circuit switching domain capability indication information to travelling carriage;
Request message can be such as " class mark request (Class Enquiry) ", as previously mentioned, repeats no more herein.
S23, the second circuit switching domain ability Indication message that receiving mobile reports according to request message, this second circuit switching domain ability Indication message comprise the sign that travelling carriage is supported CS over GERAN business;
S24 obtains the circuit commutative field ability of travelling carriage according to the first circuit commutative field capability indication information and second circuit switching domain capability indication information.
S25 reports wireless access capability report to the travelling carriage request travelling carriage that sends a request message;
This request message also can be class mark request (Class Enquiry) message.
S26 is according to the packet-switched domain ability of the wireless access capability report acquisition travelling carriage that receives.
In fact, the first circuit commutative field capability indication information or second circuit switching domain capability indication information can comprise the sign that travelling carriage is supported CS over GERAN business, just in aforesaid way one and mode two, second circuit switching domain capability indication information is passive reporting, promptly, " early stage class mark sends control " (ECSC in system message, Early Class-mark Sending Control) when field is set to " 0 ", travelling carriage can comprise in " class mark service request " message in " set up indication " message and reports the first circuit commutative field capability indication information, MSC can be after A interface link CC sets up subsequently, before issuing " class mark service request receives (CM Service Accepted) " message, can whether be that " 1 " determines whether BSC sends a request message according to the CM3 in the first circuit commutative field capability indication information (Class-Mark 2) that reports, " class mark request (CLASSMARK ENQUIRY) " message for example.Just send out request message in the time of CM3=1, travelling carriage sends " class mark change (CLASSMARK CHANGE) " message to network side after receiving this request message, reports second circuit switching domain capability indication information, for example, and Class-Mark3.
Mode three:
S31, SABM frame and second circuit switching domain capability indication information that receiving mobile sends;
S32 parses the first circuit commutative field capability indication information from the SABM frame, wherein comprises the sign whether travelling carriage supports CS over GERAN business;
S32 is known the circuit commutative field ability of travelling carriage according to the first circuit commutative field capability indication information and second circuit switching domain capability indication information.
S33 sends a request message to ask this travelling carriage to report the wireless access capability report to travelling carriage;
S34, the packet-switched domain ability of travelling carriage is known in report according to the wireless access capability that reports.
Mode four:
S41, SABM frame and second circuit switching domain capability indication information that receiving mobile sends, this second circuit switching domain capability indication information comprises the sign whether travelling carriage supports CS over GERAN business;
S42 parses the first circuit commutative field capability indication information from the SABM frame;
S42 is known the circuit commutative field ability of travelling carriage according to the first circuit commutative field capability indication information and second circuit switching domain capability indication information.
S43 sends a request message to ask this travelling carriage to report the wireless access capability report to travelling carriage;
S44, the packet-switched domain ability of travelling carriage is known in report according to the wireless access capability that reports.
In aforesaid way three and mode four, second circuit switching domain capability indication information is initiatively to report, promptly, when the ECSC message in the system message is set to " 1 ", MS can report the first circuit commutative field capability indication information in the mark service request of the class in the SABM frame (CM Service Request), and then report " change of class mark " message, therefrom report second circuit switching domain capability indication information, thereby avoid the query script of network side.
Step S302 distributes CS over GERAN channel according to the circuit commutative field ability and the packet-switched domain ability of travelling carriage for this travelling carriage.
After the travelling carriage circuit commutative field ability and packet-switched domain ability according to the first circuit commutative field capability indication information or second circuit switching domain capability indication information and RAC report acquisition, network side is that travelling carriage distributes CS over GERAN channel; Meanwhile, send CS over GERAN channel assignment order (CS over GERAN Assignment Command) to travelling carriage, the notice travelling carriage is so that travelling carriage inserts CSover GERAN channel.
As previously mentioned, because CS over GERAN business belongs to packet switching service (PS business) in essence, CS over GERAN channel is a packet-switched domain channel in essence, and in fact CS over GERAN channel assignment order is the signaling message of a circuit commutative field, therefore, in embodiment one provided by the invention, CS over GERAN channel assignment order comprises the signaling parameter of circuit commutative field and the signaling parameter of packet-switched domain.Specifically can comprise: type of message, enhancement type general use grouping wireless service (EGPRS, Enhanced General Packet Radio Service) coding mode, up temporary flow identity (TFI, temporary flow identity) assigns, descending TFI assigns, descending time slot distributes, dynamic assignment, Transmission Time Interval reduces (RTTI, Reduced Transmission Time Interval) pattern, encryption mode, many rate configuration or the like, type of message wherein, encryption mode, many rate configuration etc. are the circuit domain signaling parameter, and up TFI assigns, and RTTI pattern etc. is the packet domain signaling parameter;
Travelling carriage inserts CSover GERAN channel according to the signaling parameter of these circuit commutative fields and the signaling parameter of packet-switched domain.
In order to be expressly understood the present invention more, Fig. 6 shows in the method for channel allocation that the embodiment of the invention provides between mobile station MS, base station sub-system BS (comprising base station sub-system sending and receiving stations BTS and base station sub-system controller BSC) and the moving exchanging center MSC three Signalling exchange figure when mutual, and brief description is as follows:
S61, travelling carriage send the message of request assignment signalling channel to the base station on Random Access Channel, so that access network;
S62, the request of base station controller response travelling carriage for this travelling carriage distributes a Dedicated Control Channel, promptly sends " assignment commands immediately " to travelling carriage on Access granted Channel AGCH;
S63, travelling carriage sends the SAMB frame to the base station; Comprise travelling carriage in this SAMB frame and support the sign of CoG business, as class mark classmark2, as Fig. 4 institute, a spare bits is represented travelling carriage support CoG business among the use class mark classmark2.
S64 after the base station receives this SAMB frame, sends the travelling carriage that confirms message to the SAMB frame;
S65, the SAMB frame is resolved in the base station, sends " setting up indication " message to base station controller, wherein comprises " class mark service request " message;
Should comprise above-mentioned classmark2 in " class mark service request " message.
S66, base station controller obtain " class mark service request " message, and should " class mark service request " be sent to mobile switching centre after resolving and should " setting up and indicate " message;
Base station controller is by resolving above-mentioned foundation indication " message; can obtain classmark2; learn that travelling carriage supports the CoG business; this moment base station controller can send a request message to travelling carriage (as Class Enquiry message) require travelling carriage to report the wireless access capability report, and classmark3.After travelling carriage receives this request message, report classmark3 and wireless access capability report to base station controller.Base station controller is a circuit commutative field ability of learning this travelling carriage by the classmark2 of travelling carriage transmission and classmark3, learns the packet-switched domain ability of this travelling carriage by the wireless access capability report.
S67, message is sent to travelling carriage with " class mark service request is accepted " in mobile switching centre, so that Mobile Origination is to the caller of mobile switching centre;
S68, mobile switching centre is sent to base station controller with " channel assignment request ", to allow the base station controller be the travelling carriage allocated channel;
S69, base station controller are that travelling carriage distributes CS over GERAN channel, and " CS over GERAN channel assignment order " is sent to travelling carriage.
At this moment, base station controller be according to the circuit commutative field ability of travelling carriage and packet-switched domain ability for it distributes CS over GERAN channel, comprise the signaling parameter of circuit commutative field and the signaling parameter of packet-switched domain in this CS over GERAN channel assignment order.
For Fig. 6, need to prove, because base station controller is after receiving " channel assignment request (Assignment Request) " message of mobile switching centre, the CS over GERAN channel (CoG channel) that distributes for mobile station MS belongs to packet-switched domain channel (PS channel).Therefore, unlike the prior art, in the present embodiment, base station controller does not need the operation of execution " channel activates (Channel Activation) " (obvious, this moment, the base station did not just need feedback " channel activation confirmation (Channel ACT ACK) " message), that is, base station controller does not need to send " channel activates (Channel Activation) " message to the base station again; Same reason, do not need travelling carriage when inserting yet, link establishment operation between travelling carriage and the base station on the second layer (L2), promptly, saved base station controller and issued " CS over GERAN channel assignment order " afterwards, travelling carriage to base station controller sends message such as " connect set up indicate (EstablishmentIndication) " at the SABM frame to travelling carriage feedback UA frame and base station to base station transmission SABM frame, base station.
Understandable, embodiment shown in Figure 6 only shows first kind in four kinds of modes that above-mentioned network side obtains the packet-switched domain ability, and the signaling process of other three kinds of modes can be learnt with reference to embodiment shown in Figure 6, do not given unnecessary details at this.
When travelling carriage needs cross base station controller to switch, travelling carriage can send handoff request message to target base station controller by mobile switching centre, the circuit commutative field capability indication information and the packet-switched domain ability that comprise travelling carriage in this handoff request message are so that target base station controller distributes CS over GERAN channel according to the circuit commutative field ability and the packet-switched domain ability of this travelling carriage for it.Be understandable that the circuit commutative field capability indication information of the travelling carriage that comprises in the handoff request message and wireless access capability report can be to obtain by embodiment illustrated in fig. 3, its acquisition process repeats no more herein.
See also Fig. 7, a kind of method for channel allocation basic flow sheet that the embodiment of the invention two provides comprises:
S701, when travelling carriage needs cross base station controller to switch, if this travelling carriage is supported data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) business, the source base station controller sends handoff request message by mobile switching centre to target base station controller.
In the present embodiment, handoff request message contains the circuit commutative field capability indication information and the packet-switched domain ability of travelling carriage, so that target base station controller is that travelling carriage distributes CS over GERAN channel according to the circuit commutative field ability of this travelling carriage and packet-switched domain ability.Wherein the packet-switched domain ability can send with the form of wireless access capability report.
The acquisition methods of circuit commutative field ability and packet-switched domain ability is identical with a kind of method for channel allocation that the embodiment of the invention one provides, and in order to save space, no longer does explanation separately herein.
S702, the CSover GERAN channel switching command that source base station controller receiving target base station controller sends by mobile switching centre is comprising the signaling parameter of the circuit commutative field of target CS over GERAN channel and the signaling parameter of packet-switched domain;
S703, the source base station controller sends CS over GERAN channel switching command to travelling carriage, so that this travelling carriage switches to target CS over GERAN channel according to the signaling parameter of the circuit commutative field of target CS over GERAN channel and the signaling parameter of packet-switched domain.
Here need explanation, because CS over GERAN business belongs to packet switching service (PS business) in essence, CS over GERAN channel is a packet-switched domain channel in essence, and CS over GERAN channel switching command (CS over GERAN Handover Command) in fact is the signaling message of a circuit commutative field, therefore, in the present embodiment, CS over GERAN channel switching command comprises the signaling parameter of circuit commutative field and the signaling parameter of packet-switched domain.For example, type of message, encryption mode and many rate configuration etc. in the CS over GERAN channel switching command just belong to the signaling parameter of circuit commutative field, and up TFI appointment in the CS over GERAN channel switching command and RTTI pattern etc. just belong to the signaling parameter of packet-switched domain.
More than be that the angle that stands in the source base station controller is illustrated method for channel allocation of the present invention, the angle that below stands in target base station controller is illustrated method for channel allocation of the present invention.See also Fig. 8, a kind of channel allocation basic procedure that the embodiment of the invention three provides comprises:
S801, when travelling carriage needed cross base station controller to switch, target base station controller received handoff request message, wherein comprised the circuit commutative field capability indication information and the packet-switched domain ability of this travelling carriage;
Wherein the packet-switched domain ability can send with the form of wireless access capability report.
In the present embodiment, handoff request message gets through mobile switching centre's transparent transmission, the circuit commutative field ability Indication message of the travelling carriage that wherein comprises and packet-switched domain ability can be obtained by this source base station controller when mobile station MS initially inserts this source base station subsystem by the source base station controller, its method of obtaining Fig. 3 or embodiment illustrated in fig. 7 in the explanation, repeat no more herein.
S802, target base station controller is that travelling carriage distributes CS over GERAN channel according to the circuit commutative field ability and the packet-switched domain ability of travelling carriage.
Target base station controller is to send CS over GERAN channel switching command to this travelling carriage by source base station controller under the travelling carriage, and CS over GERAN channel switching command comprises target CS over
The signaling parameter of the circuit commutative field of GERAN channel and the signaling parameter of packet-switched domain are so that travelling carriage switches to target CS over GERAN channel according to the signaling parameter of the circuit commutative field of target CS over GERAN channel and the signaling parameter of packet-switched domain.
In order to be expressly understood that more the present invention, Fig. 9 show mobile station MS, source base station subsystem BS in the method for channel allocation that the embodiment of the invention two and embodiment three provide
1(comprise base station BTS
1And base station controller BSC
1), subsystem of objective base station BS
2(comprise base station BTS
2And base station controller BSC
2) and moving exchanging center MSC between Signalling exchange figure when mutual, brief description is as follows:
S91 to S92, travelling carriage sends test report (Measure report) to source base station controller (BSC1), BSC1 sends " handoff request (Handover Required) " to mobile switching centre (MSC), and request is with switching mobile station to target base station (BSC2);
As previously mentioned, if the first circuit commutative field ability Indication message that the travelling carriage that the source base station controller is received reports, for example comprise travelling carriage among the class-mark2 and support the indication of CoG business, the RAC report that then needs travelling carriage to be reported the source base station controller in this " handoff request " message adds, and is transmitted to target base station controller (BSC2) by mobile switching centre.
S93, MSC issues " handoff request (Handover Request) " to BSC2;
S94, BSC2 is to the affirmation message (Handover REQACK) of MSC transmission to " handoff request " message;
What comprise in the 3rd layer of information (Layer3information) cell in " Handover REQ ACK " message is will be at " CoG channel switching command (the CoG HandoverCommand) " that eat dishes without rice or wine to send to MS
After S95, MSC receive " Handover REQ ACK ", send " channel switching command (Handover Command) " to BSC1 according to this message;
" Layer3 information " cell in " Handover Command " message is exactly " Layer3 information " cell in " HandoverREQ ACK ", by transparent transmission, what wherein comprise is will be at the CoG Handover Command that eats dishes without rice or wine to send to MS to this cell at MSC.
S96, BSC1 sends " CoG Handover CMD " and gives MS, and notice MS inserts at new channel;
Comprise type of message, EGPRS coding mode, up TFI appointment, descending TFI appointment, descending time slot distribution, dynamic assignment, RTTI pattern, encryption mode and many rate configuration or the like in " CoG Handover CMD " message, wherein, type of message, encryption mode, many rate configuration etc. are the circuit domain signaling parameter, up TFI assigns, and RTTI pattern etc. is the packet domain signaling parameter.
S97 to S914, MS receives CoG Handover CMD " after; send " packet-switched domain switches access (PS Handover Access) " message to BSC2; expression will switch to the sub-district of BSC2; and BSC2 finishes " switch and survey (Handover Detect) " work and MS after switching is finished, MSC discharges the link circuit resource (by to BSC2 transmission Clear Command) that took originally between BSC1 and the MS.
For Fig. 9, need to prove, because target base station controller (BSC2) is after receiving " handoff request (Handover Request) " message of mobile switching centre, the CS overGERAN channel (CS over GERAN channel) that distributes for mobile station MS belongs to packet-switched domain channel (PS channel).Therefore, unlike the prior art, in embodiments of the present invention, base station controller BSC 2 does not need to carry out the operation (obviously, this moment, target BS did not need feedback " channel activation confirmation (Channel ACT ACK) " message yet) of " channel activates (Channel Activation) "; Same reason does not need MS when inserting yet, and the link establishment operation between MS and the target BS on the second layer (L2) for example, does not need to send SABM frame etc. to target BS again as prior art.
From Fig. 7 to embodiment illustrated in fig. 9 can learning, because subsystem of objective base station can obtain the relevant ability (circuit commutative field ability and packet-switched domain ability) of travelling carriage, therefore, when travelling carriage switches to Target cell, original access channel in time can be switched to new CS over GERAN channel, guarantee normally carrying out of customer service.
See also Figure 10, a kind of base station controller logical construction schematic diagram that the embodiment of the invention one provides.For convenience of explanation, only show the part relevant with present embodiment.Functional module/unit shown in this base station controller basic logical structure schematic diagram can be software module/unit, hardware module/unit or the software and hardware module/unit that combines, and comprising:
Packet-switched domain ability acquisition module 101, the first circuit commutative field capability indication information or the second circuit switching domain capability indication information that are used for sending when travelling carriage comprise when this travelling carriage is supported the sign of CS overGERAN business, obtain the packet-switched domain ability of this travelling carriage.
Particularly, packet-switched domain ability acquisition module 101 can be to send a request message to ask this travelling carriage to report second circuit switching domain capability indication information and wireless access capability report to travelling carriage, the packet-switched domain ability of travelling carriage is known in report according to wireless access capability, and it further comprises:
First receiving element 1011 is used for receiving " setting up Indication message (Establishment Indication) ", and this is set up Indication message and is sent according to the SABM frame that travelling carriage sends by the base station;
Figure 10 or base station controller shown in Figure 11 can further include sending module 121, as shown in figure 12, be used for when travelling carriage needs cross base station controller to switch, if this travelling carriage is supported CS over GERAN business, the source base station controller sends handoff request message by mobile switching centre to target base station controller, wherein, the circuit commutative field ability Indication message and the packet-switched domain ability that comprise travelling carriage in the handoff request message are so that target base station controller distributes CS over GERAN channel according to the circuit commutative field ability and the packet-switched domain ability of travelling carriage for this travelling carriage.Wherein the packet-switched domain ability can send with the form of wireless access capability report.
See also Figure 13, a kind of base station controller basic logical structure schematic diagram that the embodiment of the invention four provides.For convenience of explanation, only show the part relevant with present embodiment.Functional module/unit shown in this base station controller basic logical structure schematic diagram can be software unit, hardware module/unit or the software and hardware module/unit that combines, and comprising:
First sending module 132, when judge module 131 judges that travelling carriage needs cross base station controller to switch, if travelling carriage is supported CS over GERAN business, then send handoff request message to target base station controller by mobile switching centre, this handoff request message is drawn together the circuit commutative field ability Indication message and the packet-switched domain ability of travelling carriage, so that target base station controller is that travelling carriage distributes CS over GERAN channel according to the circuit commutative field ability of travelling carriage and packet-switched domain ability.Wherein the packet-switched domain ability can send with the form of wireless access capability report.
Base station controller shown in Figure 13 can also comprise the receiver module 141 and second sending module 142, as shown in figure 14, and wherein:
See also Figure 15, a kind of base station controller basic logical structure schematic diagram that the embodiment of the invention six provides.For convenience of explanation, only show the part relevant with present embodiment.Functional module/unit shown in this base station controller basic logical structure schematic diagram can be software module/unit, hardware module/unit or the software and hardware module/unit that combines, and comprising:
The channel assignment module 152 of base station controller shown in Figure 15 can comprise transmitting element 161, as shown in figure 16, be used for sending CS over GERAN channel switching command to this travelling carriage by source base station controller under the travelling carriage, CS over GERAN channel switching command comprises the signaling parameter of circuit commutative field of target CS over GERAN channel and the signaling parameter of packet-switched domain, so that travelling carriage switches to target CS over GERAN channel according to the signaling parameter of the circuit commutative field of this target CS over GERAN channel and the signaling parameter of packet-switched domain.
See also Figure 17, a kind of travelling carriage basic logical structure schematic diagram that the embodiment of the invention provides.For convenience of explanation, only show the part relevant with present embodiment.Functional module/unit shown in this travelling carriage basic logical structure schematic diagram can be software module/unit, hardware module/unit or the software and hardware module/unit that combines, and comprising:
Transmitting element 171, be used for sending the first circuit commutative field capability indication information and second circuit switching domain capability indication information, comprise the sign of travelling carriage support CS over GERAN business in this first circuit commutative field capability indication information or the second circuit switching domain capability indication information to base station controller;
The first circuit commutative field capability indication information can be Class-Mark2 (class mark 2), form as shown in Figure 4, second circuit switching domain capability indication information can be Class-Mark3 (a class mark 3).Have among Class-Mark2 or the Class-Mark3 and be used for the identification field whether instruct MS supports CS over GERAN business.For example, whether the 6th (byte is a start bit with the 0th) " CS over GERAN Indicator " of Class-Mark2 shown in Figure 4 the 5th byte can be supported the sign position of CS over GERAN business as instruct MS.For with former MS idle bit " 0 " compatibility, in the embodiment of the invention one, can not support CS over GERAN business with bit " 0 " sign, support CS over GERAN business with bit " 1 " sign.The first circuit commutative field capability indication information can be to be included in to being provided with in the Asynchronous Balanced Mode frame (SABM) that the base station sends, the base station receives this SABM frame, the parsing back comprises to the base station controller transmission sets up Indication message (Establishment Indication), wherein comprise " class mark service request (CM ServiceRequest) ", the first circuit commutative field capability indication information is loaded in this " class mark service request (CM ServiceRequest) ", and base station controller can obtain the first circuit commutative field capability indication information by resolving " class mark service request ".
Receiving element 172 is used to receive base station controller and reports request according to the packet-switched domain ability that CS over GERAN service identification sends;
The packet-switched domain ability report the request concrete form can be referring to shown in Figure 5.
The packet-switched domain ability reports unit 173, is used for reporting request to report the wireless access capability report to base station controller according to the packet-switched domain ability of receiving element reception 172.The packet-switched domain ability that comprises described travelling carriage in the wireless access capability report.
Need to prove, contents such as information interaction, implementation and technique effect between each module/unit of the said equipment, since with the inventive method embodiment based on same design, particular content can repeat no more referring to the explanation among the inventive method embodiment herein.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of the foregoing description is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
More than a kind of method for channel allocation, base station controller and a kind of travelling carriage that the embodiment of the invention provided are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (18)
1. a method for channel allocation is characterized in that, comprising:
When comprising in the first circuit commutative field capability indication information that travelling carriage sends or the second circuit switching domain capability indication information that described travelling carriage is supported the professional sign of data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN), obtain the packet-switched domain ability of described travelling carriage;
Circuit commutative field ability and described packet-switched domain ability according to described travelling carriage are that described travelling carriage distributes CS over GERAN channel.
2. the method for claim 1 is characterized in that, the described packet-switched domain ability of obtaining described travelling carriage also comprises before:
Obtain the first circuit commutative field capability indication information that described travelling carriage initiatively sends;
The second circuit switching domain capability indication information that receives that described travelling carriage initiatively sends or send according to the network side request;
The described packet-switched domain ability of obtaining described travelling carriage is specially:
Send a request message to ask described travelling carriage to report the wireless access capability report to described travelling carriage;
Know the packet-switched domain ability of described travelling carriage according to described wireless access capability report.
3. method as claimed in claim 2, describedly obtain the first circuit commutative field capability indication information that described travelling carriage initiatively sends and be specially:
Indication message (Establishment Indication) is set up in reception, resolve the described Indication message of setting up and obtain the described first circuit commutative field capability indication information, the described Indication message of setting up is sent according to the Asynchronous Balanced Mode frame (SABM) that is provided with that described travelling carriage sends by the base station.
4. the method for claim 1 is characterized in that, described circuit commutative field ability and described packet-switched domain ability according to described travelling carriage is that described travelling carriage distributes CS over GERAN channel to comprise:
Send CS over GERAN channel assignment order to travelling carriage, comprise the signaling parameter of circuit commutative field of described CS over GERAN channel and the signaling parameter of packet-switched domain in the described CS over GERAN channel assignment order, so that described travelling carriage inserts described CS over GERAN channel according to the signaling parameter of described circuit commutative field and the signaling parameter of packet-switched domain.
5. as any described method of claim 1 to 4, it is characterized in that, when described travelling carriage needs cross base station controller to switch, send handoff request message by mobile switching centre to target base station controller, the circuit commutative field capability indication information and the packet-switched domain ability that comprise described travelling carriage in the described handoff request message are so that described target base station controller is that described travelling carriage distributes CS over GERAN channel according to the circuit commutative field ability of described travelling carriage and packet-switched domain ability.
6. a method for channel allocation is characterized in that, comprising:
When travelling carriage needs cross base station controller to switch, if described travelling carriage is supported data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) business, the source base station controller sends handoff request message by mobile switching centre to target base station controller, the circuit commutative field capability indication information and the packet-switched domain ability that comprise described travelling carriage in the described handoff request message are so that described target base station controller is that described travelling carriage distributes CS over GERAN channel according to the circuit commutative field ability of described travelling carriage and packet-switched domain ability.
7. method as claimed in claim 6 is characterized in that, also comprises:
Described source base station controller receives the CS over GERAN channel switching command that described target base station controller sends by described mobile switching centre, and described CS over GERAN channel switching command comprises the signaling parameter of circuit commutative field of target CS over GERAN channel and the signaling parameter of packet-switched domain;
Described source base station controller sends described CS over GERAN channel switching command to described travelling carriage, so that described travelling carriage switches to described target CS over GERAN channel according to the signaling parameter of the circuit commutative field of described target CS over GERAN channel and the signaling parameter of packet-switched domain.
8. a method for channel allocation is characterized in that, comprising:
When travelling carriage needed cross base station controller to switch, target base station controller received handoff request message, and described handoff request message contains the circuit commutative field capability indication information and the packet-switched domain ability of described travelling carriage;
Described target base station controller is described travelling carriage distribute data speed raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) channel according to the circuit commutative field ability and the packet-switched domain ability of described travelling carriage.
9. method for channel allocation as claimed in claim 8 is characterized in that, described target base station controller is that described travelling carriage distributes CSover GERAN channel to comprise according to the circuit commutative field ability and the packet-switched domain ability of described travelling carriage:
Send CS over GERAN channel switching command to described travelling carriage by source base station controller under the described travelling carriage, described CS over GERAN channel switching command comprises the signaling parameter of circuit commutative field of target CS over GERAN channel and the signaling parameter of packet-switched domain, so that described travelling carriage switches to described target CS over GERAN channel according to the signaling parameter of the circuit commutative field of described target CS over GERAN channel and the signaling parameter of packet-switched domain.
10. a base station controller is characterized in that, comprising:
Packet-switched domain ability acquisition module, the first circuit commutative field capability indication information or the second circuit switching domain capability indication information that are used for sending when travelling carriage comprise when described travelling carriage is supported the sign of data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) business, obtain the packet-switched domain ability of described travelling carriage;
Channel assignment module, the packet-switched domain ability and the circuit commutative field ability that are used for the travelling carriage that obtains according to described packet-switched domain acquisition module are that described travelling carriage distributes CS over GERAN channel.
11., it is characterized in that described wireless access capability acquisition module comprises as base station controller as described in the claim 10:
First receiving element is used for receiving and sets up Indication message, and the described Indication message of setting up is sent according to the Asynchronous Balanced Mode frame (SABM) that is provided with that described travelling carriage sends by the base station;
Resolution unit is used to resolve the Indication message of setting up that described first receiving element receives and obtains the described first circuit commutative field capability indication information;
Second receiving element is used to receive the second circuit switching domain capability indication information that described travelling carriage initiatively sends or send according to the network side request;
Described packet-switched domain ability acquisition module specifically is used for sending a request message to ask described travelling carriage to report second circuit switching domain capability indication information and wireless access capability report to described travelling carriage, knows the packet-switched domain ability of described travelling carriage according to described wireless access capability report.
12., it is characterized in that described channel assignment module comprises as base station controller as described in the claim 10:
Transmitting element, be used to send CS over GERAN channel assignment order to described travelling carriage, comprise the signaling parameter of circuit commutative field of CS over GERAN channel of distribution and the signaling parameter of packet-switched domain in the described CSover GERAN channel assignment order, so that described travelling carriage inserts described CS over GERAN channel according to the signaling parameter of described circuit commutative field and the signaling parameter of packet-switched domain.
13., it is characterized in that described base station controller also comprises as base station controller as described in the claim 10:
Sending module, be used for when described travelling carriage needs cross base station controller to switch, if described travelling carriage is supported CS over GERAN business, send handoff request message by mobile switching centre to target base station controller, the circuit commutative field ability Indication message and the packet-switched domain ability that comprise described travelling carriage in the described handoff request message are so that described target base station controller is that described travelling carriage distributes CS over GERAN channel according to the circuit commutative field ability of described travelling carriage and packet-switched domain ability.
14. a base station controller is characterized in that, comprising:
Judge module is used to judge whether travelling carriage needs cross base station controller to switch;
First sending module, when described judge module judges that travelling carriage needs cross base station controller to switch, if described travelling carriage is supported data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) business, send handoff request message by mobile switching centre to target base station controller, the circuit commutative field ability Indication message and the packet-switched domain ability that comprise described travelling carriage in the described handoff request message are so that described target base station controller is that described travelling carriage distributes CS over GERAN channel according to the circuit commutative field ability of described travelling carriage and packet-switched domain ability.
15., it is characterized in that described base station controller also comprises as base station controller as described in the claim 14:
Receiver module, be used to receive the CS over GERAN channel switching command that described target base station controller sends by described mobile switching centre, described CS over GERAN channel switching command comprises the signaling parameter of circuit commutative field of target CS over GERAN channel and the signaling parameter of packet-switched domain;
Second sending module, be used to send the CS over GERAN channel switching command of described receiver module reception to described travelling carriage, so that described travelling carriage switches to described target CS over GERAN channel according to the signaling parameter of the circuit commutative field of described target CS over GERAN channel and the signaling parameter of packet-switched domain.
16. a base station controller is characterized in that, comprising:
Receiver module is used for when travelling carriage needs cross base station controller to switch, and receives handoff request message, and described handoff request message contains the circuit commutative field ability Indication message and the packet-switched domain ability of travelling carriage;
Channel assignment module, the circuit commutative field ability and the packet-switched domain ability that are used for the travelling carriage that receives according to described receiver module are described travelling carriage distribute data speed raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) channel.
17. base station controller as claimed in claim 16 is characterized in that, described channel assignment module also comprises:
Transmitting element, be used for sending CS over GERAN channel switching command to described travelling carriage by source base station controller under the described travelling carriage, described CS over GERAN channel switching command comprises the signaling parameter of circuit commutative field of target CS over GERAN channel and the signaling parameter of packet-switched domain, so that described travelling carriage switches to described target CS over GERAN channel according to the signaling parameter of the circuit commutative field of described target CS over GERAN channel and the signaling parameter of packet-switched domain.
18. a travelling carriage is characterized in that, comprising:
Transmitting element, be used for sending the first circuit commutative field capability indication information and second circuit switching domain capability indication information, comprise the sign that described travelling carriage support data rate raising type GSM service Radio Access Network bearer circuit switching domain (CS over GERAN) is professional in described first circuit commutative field capability indication information or the described second circuit switching domain capability indication information to base station controller;
Receiving element is used to receive the wireless access capability report reporting request that base station controller sends according to described sign;
The packet-switched domain ability reports the unit, and the wireless access capability report reporting request that is used for receiving according to described receiving element reports the wireless access capability report to described base station controller; The packet-switched domain ability that comprises described travelling carriage in the described wireless access capability report.
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