CN101222751B - Subscriber terminal, base station and independent descending carrier configuration information transmission method and system - Google Patents
Subscriber terminal, base station and independent descending carrier configuration information transmission method and system Download PDFInfo
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- CN101222751B CN101222751B CN200710000812A CN200710000812A CN101222751B CN 101222751 B CN101222751 B CN 101222751B CN 200710000812 A CN200710000812 A CN 200710000812A CN 200710000812 A CN200710000812 A CN 200710000812A CN 101222751 B CN101222751 B CN 101222751B
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Abstract
The invention relates to a user terminal, a base station and a method for transmitting single downlink carrier wave configuration information and a system thereof in the communication technical field. In the process of switching or after the switching between cells and according to a request of the user terminal, specialized carrier wave configuration information sent by a target base station is delivered to the user terminal by the base station. The specialized carrier wave configuration information is sent to the user terminal by a source base station belonging to a cell which the user terminal originally is in or by a target base station belonging to a cell that the user terminal is to enter. When the user terminal conducts switching between the cells in a connecting state, the invention can smoothly receive the multimedia multicast broadcasting services of the target base station and solve the problems that the specialized carrier wave configuration information is not received in the user terminal processing and connecting state in the prior technical proposal.
Description
Technical field
The present invention relates to communication technique field, relate in particular to a kind of user terminal, base station and independent descending carrier configuration information transmission method and system.
Background technology
MBMS (multimedia multicast broadcasting) business is in mobile communications network, to provide a data source to send the point-to-multipoint service of data to a plurality of users, is used to realize that Internet resources are shared, improves utilization rate of network resource, the interface resource of especially eating dishes without rice or wine.MBMS can not only realize the classes of messages multicast and the broadcasting of plain text low rate, and can also realize multicast and broadcasting that high-speed multimedia is professional.
In current WCDMA (WCDMA) version, MBMS has had quite perfect flow process, but the MBMS efficiency of transmission among the WCDMA is lower, especially is not suitable for transmission such as high-speed multimedia flow datas such as mobile TVs.
This MBMS is professional for more effective support, and industry proposes to use special carrier to support MBMS professional, particularly the high speed business of TV class.The characteristics of special carrier are: in this carrier wave on MBMS transmission business, relevant unicast service does not transmit.Under some scene, special carrier does not have special ascending physical signal resource, and this have only the scene of downlink resource to be called independent descending carrier.
In order to reduce the time of UE (user terminal) search special carrier, in general communication network, transmit some DC-CFG (configuration information of special carrier), after the user obtains said DC-CFG information, can receive the programme information that transmits on the special carrier fast.Said DC-CFG information generally includes: access technology, Frequency point, lock in time, associated frame structural parameters etc.
Can both receive the configuration information of special carrier for the user terminal that makes all states; Common way is: with this message with broadcasting form in general transmitted over communications networks; As on BCCH (broadcast channel), broadcasting, all UE on this sub-district can both receive.
The such scheme shortcoming is that the UE of capabilities (User Equipment) reads the information less than broadcast channel when connection status, may cause the user can not receive special carrier information.
Cause the signal of this reason as shown in Figure 1,
UE is idle condition at T1 constantly, and before T1, UE can read the configuration information (as can from the broadcast channel of C1 or C2, reading) of special carrier from the broadcast channel of clean culture sub-district.
T1 constantly after, UE has got into connection status (carrying out communication process), CELL_DCH state for example, along with moving of UE, UE moves to the DC zone 2 from DC zone 1, a simple UE switching flow is as shown in Figure 2:
The first step: user terminal UE sends handoff request according to the result who measures to source Node B (base station under the sub-district, the former place of user terminal).
Second step: source Node B and target Node B (base station under the sub-district that user terminal is about to get into) hold consultation, and target Node B informs source Node B with relevant access parameter.
The 3rd step: source Node B sends switching command according to negotiation result to UE.And the access parameter of target Node B informed UE
The 4th step: UE connects with target Node B according to access parameter and is connected with source Node B disconnection.
For the UE of WCDMA, when being in the CELL_DCH state, the UE of capabilities can not read the information on the broadcast channel, therefore can not from the clean culture sub-district, obtain the configuration information in DC zone 2; For the UE of GSM, all UE can not read the information on the broadcast channel, therefore can not from the clean culture sub-district, obtain the configuration information in DC zone 2.
In the T2 moment, UE prepares to receive the business under the special carrier, but UE this moment does not have the relevant configuration information in DC zone 2, thereby causes the operational difficulty of UE reception MBMS.
Summary of the invention
The embodiment of the invention provides a kind of user terminal, base station and independent descending carrier configuration information transmission method and system, has solved user terminal in the prior art scheme carries out not receiving after switch the minizone special carrier configuration information under connection status problem.
Embodiment of the invention implementation is following:
The embodiment of the invention provides a kind of independent descending carrier configuration information transmission method, comprising:
Said user terminal according to the request of user terminal, is handed down to the special carrier configuration information of target BS in the base station after user terminal carries out in the handoff procedure of minizone or switches.
The embodiment of the invention provides a kind of user terminal, comprising:
Switching device shifter is used to carry out cell handover operations;
Special carrier configuration request module is used for carrying out handoff procedure or carrying out switching back transmission special carrier configuration request message at said switching device shifter;
Special carrier configuration information receiver module is used to receive the special carrier configuration information.
The embodiment of the invention provides a kind of base station, comprising:
Special carrier configuration information receiver module, in said base station during as source base station, the special carrier configuration information of the target BS that is used for sending the receiving target base station;
The special carrier configuration information issues module one, is used to issue the special carrier configuration information of the target BS that said special carrier configuration information receiver module received.
The embodiment of the invention provides a kind of base station, comprising:
Special carrier configuration information receiver module, in said base station during as source base station, the special carrier configuration information of the target BS that is used for sending the receiving target base station;
Special carrier configuration information comparison module, whether be used for before issuing the special carrier configuration information under the sub-district before and after relatively user terminal switches the special carrier configuration information of base station identical;
The special carrier configuration information issues module two, when the special carrier configuration information of base station is inequality under the sub-district before and after said user terminal switches, sends the information of this part inequality to user terminal.
The embodiment of the invention provides a kind of independent descending carrier configuration information transmission system, comprises at least one user terminal and at least two base stations, and said user terminal is provided with:
Switching device shifter is used to carry out cell handover operations;
Special carrier configuration request module; In said base station during as source base station; Be used for carrying out handoff procedure and send special carrier configuration request message to said base station at said switching device shifter; Perhaps, in said base station during, be used for carrying out and switch the back and send special carrier configuration request message to said base station at said switching device shifter as target BS;
Special carrier configuration information receiver module is used to receive the special carrier configuration information that send said base station;
Said base station is provided with:
Special carrier configuration information receiver module, in said base station during as source base station, the special carrier configuration information of the target BS that is used for sending the receiving target base station;
The special carrier configuration information issues module one, is used to issue the special carrier configuration information of the target BS that said special carrier configuration information receiver module received.
The embodiment of the invention provides a kind of independent descending carrier configuration information transmission system, comprises at least one user terminal and at least two base stations, and said user terminal is provided with:
Switching device shifter is used to carry out cell handover operations;
Special carrier configuration request module is used for carrying out handoff procedure at switching device shifter and sends special carrier configuration request message.
Special carrier configuration information receiver module is used to receive the special carrier configuration information;
Said base station is provided with:
Special carrier configuration information receiver module, in said base station during as source base station, the special carrier configuration information of the target BS that is used for sending the receiving target base station;
Special carrier configuration information comparison module, whether be used for before issuing the special carrier configuration information under the sub-district before and after relatively user terminal switches the special carrier configuration information of base station identical;
The special carrier configuration information issues module two, when the special carrier configuration information of said target BS and said source base station is inequality, sends the information of this part inequality to said user terminal.
Technical scheme by the invention described above embodiment provides can be found out; The embodiment of the invention has realized that user terminal UE is in carrying out the minizone handoff procedure; By Node B the special carrier configuration information that sends in the target BS is transferred to UE; Thereby after making UE can under connection status, carry out the minizone switching, the MBMS of receiving target base station is professional smoothly.
Description of drawings
Fig. 1 is that the professional sketch map of reception MBMS is switched in prior art UE minizone;
Fig. 2 carries out minizone switching flow figure for prior art UE;
Fig. 3 is the method for the invention embodiment one flow chart;
Fig. 4 is the method for the invention embodiment two flow charts;
Fig. 5 is a kind of embodiment module diagram of system according to the invention.
Embodiment
In embodiments of the present invention; User terminal UE is in carrying out the minizone handoff procedure or after switching; By Node B the special carrier configuration information of target Node B is transferred to UE, UE can be carried out after the minizone switches, smoothly the MBMS of receiving target base station business under connection status.
The configuration information of said special carrier can be transferred to UE or be transferred to UE by target Node B by source Node B.
Below in conjunction with accompanying drawing embodiment of the present invention is elaborated.
It is example that the embodiment of the invention one is transferred to UE with the special carrier configuration information by source Node B; The special carrier configuration information that is said target Node B is carried out being handed down to UE's in the handoff procedure of minizone at UE by source Node B; Its concrete implementation procedure is as shown in Figure 3, comprises the steps:
Step 1: user terminal sends handoff request according to the result who measures to source Node B, and carries the message of the DC-CFG information of request target Node B.
Said DC-CFG message can be carried in the said handoff request, perhaps sends to source Node B with independent request command through dedicated channel.
Step 2: source Node B holds consultation with target Node B after receiving described request message, and target Node B sends to source Node B with the information about DC-CFG among relevant access parameter and the target Node B.
Said source Node B and target Node B negotiations process, promptly both whether compare DC-CFG information different, and need to confirm the DC-CFG information of sending.A kind of embodiment correlation step of concrete negotiations process is following:
Step 21: source Node B sends the DC-CFG request message and gives target Node B, and the identifier and the DC-CFG information of said special carrier in the Node B of source of in described request message, carrying special carrier;
Step 22: target Node B compares with DC-CFG information of oneself storing and the DC-CFG information in the request message, if find to have different information, then sends information inequality to source Node B, and said DC-CFG information situation inequality comprises:
Situation 1: identical special carrier (like identical PLMN (public land mobile network) ID), different configurations;
Situation 2: have new special carrier (as new PLMN ID is arranged among the target Node B).
If the DC-CFG information of sending is identical; Then target Node B can not give source Node B according to not sending said DC-CFG information with the agreement of source Node B in advance; This moment, source Node B can know with the said DC-CFG information of target Node B identically, perhaps only sent the identical information of expression and gave source Node B.
The process of the DC-CFG information that above-mentioned negotiation confirm to need is sent is in order to reduce unnecessary transmission, and in its actual mechanical process, its target Node B can directly all send to source Node B with its DC-CFG information.
Step 3: source Node B sends switching command according to negotiation result to UE, and the access parameter of target Node B and the DC-CFG information of target Node B are sent to UE.
In order to reduce some unnecessary transmission, source Node B can compare with the DC-CFG information that target Node B sends over.If identical, then Node B in source does not send said DC-CFG information and gives UE, shows that in the reason of not sending two Node B send identical DC-CFG information.If two DC-CFG information have part different, can only transmit different portions.If in the negotiations process of aforementioned source Node B and target Node B, carried out the comparison of DC-CFG information, then source NodeB no longer compares here.
Said DC-CFG transmission of Information can be placed on to be transmitted in the switching command or transmits on dedicated channel with separate message.
Step 4:UE connects according to access parameter and target Node B, and is connected with source Node B disconnection.
UE is after being linked into target Node B, and is professional according to the DC-CFG message pick-up MBMS of target Node B.
It is example that the embodiment of the invention two is transferred to UE with the special carrier configuration information by target Node B; The special carrier configuration information that is said target Node B is carried out being handed down to UE after switch the minizone at UE by target Node B; Its concrete implementation procedure is as shown in Figure 4, comprises the steps:
Step 1: user terminal UE sends handoff request according to the result who measures to source Node B.
Step 2: source Node B and target Node B hold consultation, and target Node B sends to source Node B with relevant access parameter.
Step 3: source Node B sends switching command according to negotiation result to UE, and the access parameter of target Node B is sent to UE.
Step 4:UE connects according to access parameter and target Node B, and is connected with source Node B disconnection.
Step 5:UE is to target Node B request DC-CFG information.
During UE request DC-CFG message, can one's own DC-CFG information (perhaps information index) be reported target Node B simultaneously.
Step 6: target Node B sends DC-CFG information to UE.
In order to reduce some unnecessary transmission; After UE reports target Node B with one's own DC-CFG information (perhaps information index); More whether target Node B can send identical DC-CFG information with source Node B; If identical, then target Node B does not send DC-CFG information and gives UE, shows that in the reason of not sending two Node B send identical DC-CFG information.If two DC-CFG information have part different, can only transmit different portions.
UE can send the message of the DC-CFG information of request target Node B in the foregoing description two to source Node B transmission handoff request message the time, and target Node B sends said target Node B to UE after UE switches completion DC-CFG information.After can one's own DC-CFG information (perhaps information index) being reported target Node B equally in the time of the DC-CFG information of described request target Node B; Compare by target Node B, and carry out above-mentioned different transmit operation according to comparative result.
Embodiment three provided by the invention is applied to the LTE system with said method: its solution is transmitted in the switching for said DC-CFG information is not be used in, and transmits but be placed in time broadcast channel.Can reduce the load of main broadcast channel like this.
The embodiment of the invention four provides a kind of independent descending carrier configuration information transmission system, and said system comprises a plurality of user terminals and base station.As shown in Figure 5, said user terminal is provided with:
Switching device shifter is used to carry out cell handover operations;
Special carrier configuration request module is used for carrying out handoff procedure or switching back transmission special carrier configuration request message at switching device shifter;
Special carrier configuration information receiver module is used to receive the special carrier configuration information;
Said base station is provided with:
Special carrier configuration information receiver module during as source base station, is used for the target BS special carrier configuration information that send the receiving target base station in said base station;
The special carrier configuration information issues module one, is used to issue the special carrier configuration information of the target BS that said special carrier configuration information receiver module received.
The embodiment of the invention five provides a kind of independent descending carrier configuration information transmission system, and the difference of said system and embodiment four only is that said base station is provided with:
Special carrier configuration information receiver module during as source base station, is used for the target BS special carrier configuration information that send the receiving target base station in said base station;
Special carrier configuration information comparison module, whether be used for before issuing the special carrier configuration information under the sub-district before and after relatively user terminal switches the special carrier configuration information of base station identical;
The special carrier configuration information issues module two; When the special carrier configuration information of target BS and source base station is identical; Show the information that target BS is identical with the special carrier configuration information of source base station to the user terminal transmission; When the special carrier configuration information of target BS and source base station is inequality, send the information of this part inequality to user terminal.
Embodiment five is under the situation that special carrier configuration information comparison module is set; If target BS is identical with the DC-CFG information of source base station; Then DC-CFG information issues module and does not send concrete DC-CFG information to UE; Only transmission shows the information that target BS is identical with the DC-CFG information of source base station, and perhaps basis is not sent DC-CFG information with making an appointment of source base station.If two DC-CFG information have different piece, then DC-CFG information issues module and can only send different portions.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. an independent descending carrier configuration information transmission method is characterized in that, comprising:
Said user terminal according to the request of user terminal, is handed down to the special carrier configuration information of target BS in the base station after user terminal carries out in the handoff procedure of minizone or switches;
Said special carrier configuration information is handed down to user terminal by the source base station under the sub-district at the original place of user terminal;
The said method that issues the special carrier configuration information by source base station specifically comprises:
Said user terminal sends handoff request and the special carrier configuration request is given said source base station;
Said source base station and said target BS are consulted, and said target BS sends to said source base station with the special carrier configuration information of said target BS;
Said source base station is given said user terminal according to the special carrier configuration information that negotiation result issues switching command and said target BS.
2. the method for claim 1 is characterized in that, after said source base station received the special carrier configuration information of said target BS, said method further comprised:
Whether said source base station relatively oneself special carrier configuration information is identical with the special carrier configuration information of said target BS, if all different or part is different, the information of switching command and different piece of then sending is given said user terminal.
3. according to claim 1 or claim 2 method is characterized in that, the method that said user terminal sends the special carrier configuration request comprises:
In said handoff request, carry said special carrier configuration request; Or
Send said special carrier configuration request with independent order.
4. according to claim 1 or claim 2 method is characterized in that, said source base station sends the special carrier configuration information and comprises for the method for user terminal:
In said switching command, carry said special carrier configuration information; Or
Send said special carrier configuration information with independent order.
5. an independent descending carrier configuration information transmission method is characterized in that, comprising:
Said user terminal according to the request of user terminal, is handed down to the special carrier configuration information of target BS in the base station after user terminal carries out in the handoff procedure of minizone or switches;
Said special carrier configuration information is handed down to user terminal by the source base station under the sub-district at the original place of user terminal;
The said method that issues the special carrier configuration information by source base station specifically comprises:
Said user terminal sends handoff request and the special carrier configuration request is given said source base station;
Said source base station and said target BS are consulted; Whether said target BS relatively oneself special carrier configuration information is identical with the special carrier configuration information of said source base station; When or part all different with the special carrier information of said source base station not simultaneously, the information of different piece is sent to said source base station;
Said source base station is given said user terminal according to the information that negotiation result issues switching command and said different piece.
6. method as claimed in claim 5 is characterized in that, the method that said user terminal sends the special carrier configuration request comprises:
In said handoff request, carry said special carrier configuration request; Or
Send said special carrier configuration request with independent order.
7. method as claimed in claim 5 is characterized in that, said source base station sends the special carrier configuration information and comprises for the method for user terminal:
In said switching command, carry said special carrier configuration information; Or
Send said special carrier configuration information with independent order.
8. an independent descending carrier configuration information transmission method is characterized in that, comprising:
Said user terminal according to the request of user terminal, is handed down to the special carrier configuration information of target BS in the base station after user terminal carries out in the handoff procedure of minizone or switches;
Said special carrier configuration information is handed down to user terminal by said target BS;
The method that said target BS issues said special carrier configuration information specifically comprises:
After said user terminal and said target BS connected, said user terminal sent the special carrier configuration information of target BS to said target base station requests; Said target BS sends the special carrier configuration information of said target BS and gives said user terminal; Perhaps,
After said user terminal and said target BS connected, said user terminal sent the special carrier configuration information of target BS to said target base station requests, and reported the special carrier configuration information of source base station to said target BS; Whether the special carrier configuration information of the more said target BS of said target BS is identical with the special carrier configuration information of source base station, and under whole differences or part condition of different, sends the information of different piece.
9. an independent descending carrier configuration information transmission system is characterized in that, comprises at least one user terminal and at least two base stations, and said user terminal is provided with:
Switching device shifter is used to carry out cell handover operations;
Special carrier configuration request module; In said base station during as source base station; Be used for carrying out handoff procedure and send special carrier configuration request message to said base station at said switching device shifter; Perhaps, in said base station during, be used for carrying out and switch the back and send special carrier configuration request message to said base station at said switching device shifter as target BS;
Special carrier configuration information receiver module is used to receive the special carrier configuration information that send said base station;
Said base station is provided with:
Special carrier configuration information receiver module, in said base station during as source base station, the special carrier configuration information of the target BS that is used for sending the receiving target base station;
The special carrier configuration information issues module one, is used to issue the special carrier configuration information of the target BS that said special carrier configuration information receiver module received.
10. an independent descending carrier configuration information transmission system is characterized in that, comprises at least one user terminal and at least two base stations, and said user terminal is provided with:
Switching device shifter is used to carry out cell handover operations;
Special carrier configuration request module is used for carrying out handoff procedure at switching device shifter and sends special carrier configuration request message;
Special carrier configuration information receiver module is used to receive the special carrier configuration information;
Said base station is provided with:
Special carrier configuration information receiver module, in said base station during as source base station, the special carrier configuration information of the target BS that is used for sending the receiving target base station;
Special carrier configuration information comparison module, whether be used for before issuing the special carrier configuration information under the sub-district before and after relatively user terminal switches the special carrier configuration information of base station identical;
The special carrier configuration information issues module two, when the special carrier configuration information of said target BS and said source base station is inequality, sends the information of part inequality to said user terminal.
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| CN200710000812A CN101222751B (en) | 2007-01-12 | 2007-01-12 | Subscriber terminal, base station and independent descending carrier configuration information transmission method and system |
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| CN200710000812A CN101222751B (en) | 2007-01-12 | 2007-01-12 | Subscriber terminal, base station and independent descending carrier configuration information transmission method and system |
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| CN1256597A (en) * | 1998-11-11 | 2000-06-14 | Lg情报通信株式会社 | Mobile communication system and cross-region switching method for supporting soft cross-region switching between switching stations |
| CN1502212A (en) * | 2000-10-30 | 2004-06-02 | ��˹��ŵ�� | Wireless intersystem handover |
| CN1678115A (en) * | 2004-04-01 | 2005-10-05 | 大唐移动通信设备有限公司 | Relay switch-over method in TD-SCDMA mobile communication system |
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