CN102196518B - Processing method and device during cell switching - Google Patents
Processing method and device during cell switching Download PDFInfo
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- CN102196518B CN102196518B CN201010130248.1A CN201010130248A CN102196518B CN 102196518 B CN102196518 B CN 102196518B CN 201010130248 A CN201010130248 A CN 201010130248A CN 102196518 B CN102196518 B CN 102196518B
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Abstract
The invention discloses a processing method and device during cell switching. The method comprises the steps of executing a random access process between a terminal and a new access cell needed to be accessed by the terminal while the cell switching is determined to be carried out; and beginning to receive a system message of the new access cell by the terminal in a random access process so as to obtain an SFN (Single Frequency Network) of the new access cell. According to the method and the device disclosed by the invention, the interruption time length of uplink data transmission of the terminal in the cell switching process can be reduced.
Description
Technical field
The present invention relates to cell merge technology, particularly relate to the processing method in a kind of cell merge and device.
Background technology
In 3GPP Long Term Evolution (LTE) 36.331v870 agreement, the terminal required operation performed when giving cell merge: terminal is first synchronous at the new cell downlink that will access, then radio bearer (RadioBearer is rebuild, RB), and the system configuration parameter comprised in (RRC connectionreconfiguration) message is reshuffled in radio resource control connection, system configuration is to bottom, after Stochastic accessing completes, enable the system configuration irrelevant with new Cell System Frame Number (SFN), after the system configuration relevant to SFN needs to wait until that terminal obtains SFN, just can enable.
Concrete, in LTE system, terminal carries out the process of cell merge as shown in Figure 1, wherein, is community A by the cell setting of current for terminal access, and terminal needs the cell setting switching access to be community B, and as shown in Figure 1, this cell switch process comprises the steps:
Step 101: terminal resides in community A, and be in RRC connection (RRC_CONNECTED) state; When network side determines terminal to be switched to community B from community A, community A sends RRCconnection reconfiguration message to terminal, is switched to community B with indicating terminal.
Now, terminal does not read the system message of community B, does not therefore also get the SFN of community B.
Step 102: terminal performs the random access procedure between the B of community, after Stochastic accessing completes, terminal enables the system configuration irrelevant with the SFN of community B, and has reshuffled (RRC connection reconfiguration Complete) message to community B transmission RRC connection.
Step 103: terminal starts the system message receiving community B, to obtain the SFN of community B, enables the system configuration relevant to the SFN of community B.
Afterwards, namely by buffer status report, (Buffer Status Report, BSR process carries out the transmission of upstream data to terminal.
Due to terminal transmitting uplink data must terminal enable configure with the SFN related system of community B after could perform, therefore, after terminal is accomplished to the Stochastic accessing of community B, the transmission of upstream data can not be recovered immediately.Also namely: after terminal is accomplished to the Stochastic accessing of community, due to the SFN of the community B that terminal does not also get, enable the system configuration relevant to the SFN of community B, even if terminal now exists the upstream data needing transmission, these upstream datas can not be sent to community B at once.Terminal needs the Master Information Block (Master Information Block, MIB) first received in the system message of community B, and then gets the SFN of community B, after enabling the system configuration relevant to SFN, could recover the transmission of upstream data.Thus terminal is longer for the break period of transmitting uplink data in cell switch process, affects the transmitting uplink data performance of terminal.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is, provides the processing method in a kind of cell merge and device, can shorten the interruption duration that terminal carries out transmitting uplink data in cell switch process.
For this reason, the embodiment of the present invention adopts following technical scheme:
The embodiment of the present invention provides the processing method in a kind of cell merge, comprising:
When terminal is determined to carry out cell merge, perform the random access procedure between the new access community that needs access; Further, in described random access procedure, terminal starts the system message receiving described new access community, to obtain the system frame number SFN of described new access community.
Wherein, the described system message starting to receive described new access community is in the random access procedure specially:
Send random access guiding PRACH Preamble message in terminal to described new access community, while the random access procedure being initiated to described new access community, terminal starts the system message receiving described new access community; Or,
After terminal sends PRACH Preamble message, any time before Stochastic accessing success, terminal starts the system message receiving described new access community.
The method also comprises:
Before described random access procedure completes, terminal gets the Master Information Block MIB in the system message of described new access community, gets the SFN of described new access community from MIB;
Terminal complete with the random access procedure of described new access community after, enable all system configuration, described all system configuration comprise relevant to the SFN newly accessing community or irrelevant system configuration; Further, terminal sends radio resource control RRC connection to described new access community and has reshuffled message, to complete to the cell switch process of described new access community indicating terminal.
After terminal starts to receive the system message of described new access community, the method also comprises:
Terminal complete with the random access procedure of described new access community after, enable the system configuration irrelevant with the SFN of described new access community, send RRC connection to described new access community and reshuffle message, to complete to the cell switch process of described new access community indicating terminal;
Terminal gets the MIB in the system message of described new access community, obtains the SFN of described new access community from MIB, enables the system configuration relevant to the SFN of described new access community.
Described terminal determines that carrying out cell merge is specially:
Terminal determines that receiving the RRC sent present access subzone connects reconfiguration message, and described reconfiguration message is used to indicate terminal and community is switched to described new access community from present access subzone.
The embodiment of the present invention also provides the processing unit in a kind of cell merge, comprising:
Access unit, during for determining to carry out cell merge, performs the random access procedure between the new access community that needs access;
Acquiring unit, in described random access procedure, starts the system message receiving described new access community, to obtain the SFN of described new access community.
Wherein, acquiring unit specifically for: send PRACHPreamble message in terminal to described new access community, while the random access procedure being initiated to described new access community, terminal starts the system message receiving described new access community, to obtain the SFN of described new access community; Or after terminal sends PRACH Preamble message, any time before Stochastic accessing success, terminal starts the system message receiving described new access community, to obtain the SFN of described new access community.
Acquiring unit also for: before random access procedure completes, get the MIB in the system message of described new access community, from MIB, get the SFN of described new access community;
This device comprises further:
First enables unit, for complete with the random access procedure of described new access community after, enable all system configuration, described all system configuration comprise relevant to the SFN newly accessing community or irrelevant system configuration;
First transmitting element, has reshuffled message, to complete to the cell switch process of described new access community indicating terminal for sending RRC connection to described new access community.
Acquiring unit also for: after described random access procedure completes, get the MIB in the system message of described new access community, from MIB, obtain the SFN of described new access community;
This device also comprises:
Second enables unit, for complete with the random access procedure of described new access community after, enable the system configuration irrelevant with the SFN of described new access community;
Second transmitting element, has reshuffled message, to complete to the cell switch process of described new access community indicating terminal for sending RRC connection to described new access community;
3rd enables unit, after getting the SFN of new access community, enables the system configuration relevant to the SFN of described new access community for acquiring unit.
Access unit specifically for: determine to receive the RRC sent present access subzone connect reconfiguration message time, perform and need the random access procedure between the new access community accessed; Described reconfiguration message is used to indicate terminal and community is switched to described new access community from present access subzone.
Technique effect for technique scheme is analyzed as follows:
Terminal is performing and is newly accessing in the random access procedure between community, namely the system message receiving new access community is started, to obtain the SFN of new access community, thus procedure division terminal being obtained the SFN of new access community even all with the random access procedure executed in parallel of terminal, thus shorten the interruption duration that terminal carries out transmitting uplink data in cell switch process, improve the transmitting uplink data performance of terminal.
Accompanying drawing explanation
Fig. 1 is prior art cell switching method schematic flow sheet;
Fig. 2 is the process flow schematic diagram in a kind of cell merge of the embodiment of the present invention;
Fig. 3 is the process flow schematic diagram in a kind of cell merge of the embodiment of the present invention;
Fig. 4 is the process flow schematic diagram in the another kind of cell merge of the embodiment of the present invention;
Fig. 5 is the processing unit structural representation in embodiment of the present invention cell merge;
Fig. 6 is the processing unit structural representation in a kind of cell merge of the embodiment of the present invention;
Fig. 7 is the processing unit structural representation in the another kind of cell merge of the embodiment of the present invention.
Embodiment
Below, the realization of processing method in embodiment of the present invention cell merge and device is described with reference to the accompanying drawings.
Fig. 2 is the process flow schematic diagram in a kind of cell merge of the embodiment of the present invention, as shown in Figure 2, comprising:
Step 201: when terminal is determined to carry out cell merge, performs the random access procedure between the new access community that needs access;
Step 202: in described random access procedure, terminal starts the system message receiving described new access community, to obtain the SFN of described new access community.
In processing method in the cell merge shown in Fig. 2, terminal is performing and is newly accessing in the random access procedure between community, namely the system message receiving new access community is started, to obtain the SFN of new access community, thus procedure division terminal being obtained the SFN of new access community even all with the random access procedure executed in parallel of terminal, thus shorten the interruption duration that terminal carries out transmitting uplink data in cell switch process.
Wherein, in actual applications, setting terminal any time in the random access procedure can start the system message receiving community B, such as: send random access guiding (PRACH Preamble) message in terminal to described new access community, while the random access procedure being initiated to described new access community, terminal starts the system message receiving described new access community; Or after terminal sends PRACHPreamble message, any time before Stochastic accessing success, terminal starts the system message receiving described new access community.Because random access procedure has the duration, terminal from newly access the acquisition of cell system message, also the regular hour is needed to the SFN getting new access community, therefore, according to the terminal of setting start the system message receiving described new access community time be engraved in the difference of position in described random access procedure, terminal gets the new SFN accessing community may before the Stochastic accessing success of terminal, and now, the cell switch process of terminal as shown in Figure 3; Or terminal gets the new SFN accessing community also may after Stochastic accessing success, and now, the cell switch process of terminal as shown in Figure 4.
Fig. 3 is the process flow schematic diagram in a kind of cell merge of the embodiment of the present invention, in the method, the present access subzone of terminal is set to community A, and community needs the new access community of access to be community B, and as shown in Figure 3, the method comprises:
Step 301: terminal resides in community A, and be in RRC_CONNECTED state; When network side determines the Serving cell of terminal to be switched to community B from community A, community A sends RRCconnection reconfiguration message to terminal, is switched to community B with indicating terminal.
Step 302: terminal sends PRACH Preamble message, to be initiated to the random access procedure of community B to community B.
Step 303: in the random access procedure, terminal starts the system message receiving community B, to obtain the SFN of community B.
Wherein, cell system message was broadcasted on corresponding channel resource with certain cycle, and terminal can get the system message of a certain community (such as community B) on the channel resource of correspondence, specifically how to obtain and repeats no more here.
Generally comprise MIB in the system message of community, the SFN of community is generally included in the MIB of community, therefore, terminal is when obtaining the SFN of community B, as as described in step 304, generally need the MIB first got in the system message of community B, from MIB, get the SFN of community B afterwards again.
Step 304: terminal gets the MIB in the system message of community B, and then the SFN getting the community B comprised in MIB.
Step 305: terminal complete with the Stochastic accessing of described new access community after, enable all system configuration; Further, terminal sends RRC connection to described new access community and has reshuffled message, to complete to the cell switch process of community B indicating terminal.
Described all system configuration comprise the system configuration relevant to the SFN of community B, also comprise the system configuration irrelevant with the SFN of community B.
Afterwards, terminal can carry out the transmission of upstream data.
In processing method in the cell merge shown in Fig. 3, terminal is in initiating random access procedure, namely the system message receiving new access community is started, to obtain the SFN of new access community, and, namely terminal got the SFN of community B before Stochastic accessing success, thus all related system configurations of terminal are enabled when having switched, terminal can be will begin in a minute the transmission of upstream data after having switched, thus shorten the interruption duration that terminal carries out transmitting uplink data in cell switch process, improve the upstream performance of terminal.
Fig. 4 is the process flow schematic diagram in the another kind of cell merge of the embodiment of the present invention, and in the method, the present access subzone of terminal is set to community A, community needs the new access community of access to be community B, as shown in Figure 4, comprising:
Step 401 ~ step 403, see step 301 ~ step 303, repeats no more here.
Step 404: terminal complete with the random access procedure of described new access community after, enable the system configuration irrelevant with the SFN of community B; Further, send RRC connection to community B and reshuffle message, to complete to the cell switch process of community B indicating terminal.
Step 405: terminal gets the MIB in the system message of community B, and then the SFN obtaining the community B comprised in MIB, enable the system configuration relevant to the SFN of community B.
Afterwards, namely terminal can carry out the transmission of upstream data.
In processing method in the cell merge shown in Fig. 4, terminal is in initiating random access procedure, namely the system message receiving new access community is started, to obtain the SFN of new access community, although still receive described MIB after terminal completes to the handoff procedure of community B, and then get the SFN of community B, but, still terminal is obtained the partial routine of SFN and the random access procedure executed in parallel of terminal of new access community in method shown in Fig. 4, thus shorten the interruption duration that terminal carries out transmitting uplink data in cell switch process, improve the upstream performance of terminal.
Specifically, suppose that the time of terminal random access procedure is t1, the time that terminal gets the SFN of community B is t2, then in prior art, and T=t1+t2 break period of terminal uplink transfer of data; And in the cell switch process shown in Fig. 3, T=t1 break period of terminal uplink transfer of data; In the cell switch process shown in Fig. 4, T < t1+t2 break period of terminal uplink transfer of data; Thus can find out, by starting the system message receiving new access community in terminal random access procedure, the break period of terminal transmitting uplink data in cell merge can be shortened, thus compared to prior art, the transmitting uplink data of terminal can be recovered faster, improve the transmitting uplink data performance of terminal.
The scope giving handover delay in 36.331v870 agreement is 50ms to 2s, and the duration that terminal reads MIB to be needed is 40ms to 80ms, therefore while being set as initiating random access procedure the opportunity preferably starting terminal to read new access community, like this, terminal can get MIB in handoff procedure in most cases, and then get the SFN of new access community, save the time that terminal reads MIB completely, as shown in Figure 3, thus farthest shorten the interruption duration of transmitting uplink data; Even and if there is the realization flow shown in Fig. 4, still can shorten the interruption duration of transmitting uplink data, also the time of i.e. about 50ms, make terminal can recover transmitting uplink data faster.
Corresponding with the processing method in above-mentioned cell merge, the embodiment of the present invention also provides the processing unit in a kind of cell merge, and as shown in Figure 5, this device comprises:
Access unit 510, during for determining to carry out cell merge, performs the random access procedure between the new access community that needs access;
Acquiring unit 520, in described random access procedure, starts the system message receiving described new access community, to obtain the SFN of described new access community.
Preferably, access unit 310 specifically may be used for: when determining that receiving the RRC sent present access subzone connects reconfiguration message, perform the random access procedure between the new access community that needs access; Described reconfiguration message is used to indicate terminal and community is switched to described new access community from present access subzone.
Preferably, acquiring unit specifically may be used for: send PRACHPreamble message in terminal to described new access community, while the random access procedure being initiated to described new access community, terminal starts the system message receiving described new access community, to obtain the SFN of described new access community; Or after terminal sends PRACH Preamble message, any time before Stochastic accessing success, terminal starts the system message receiving described new access community, to obtain the SFN of described new access community.
Preferably, acquiring unit can also be used for: before random access procedure completes, and gets the MIB in the system message of described new access community, gets the SFN of described new access community from MIB;
Accordingly, as shown in Figure 6, this device comprises further:
First enables unit 630, for complete with the random access procedure of described new access community after, enable all system configuration, described all system configuration comprise relevant to the SFN newly accessing community or irrelevant system configuration;
First transmitting element 640, has reshuffled message, to complete to the cell switch process of described new access community indicating terminal for sending RRC connection to described new access community.
Preferably, acquiring unit can also be used for: after described random access procedure completes, and gets the MIB in the system message of described new access community, obtains the SFN of described new access community from MIB;
Accordingly, as shown in Figure 7, this device also comprises:
Second enables unit 730, for complete with the random access procedure of described new access community after, enable the system configuration irrelevant with the SFN of described new access community;
Second transmitting element 740, has reshuffled message, to complete to the cell switch process of described new access community indicating terminal for sending RRC connection to described new access community;
3rd enables unit 750, for get new access community SFN after, enable the system configuration relevant to the SFN of described new access community.
In processing unit in cell merge shown in Fig. 5 ~ Fig. 7, acquiring unit in the random access procedure, namely the system message receiving new access community is started, to obtain the SFN of new access community, thus procedure division terminal being obtained the SFN of new access community even all with the random access procedure executed in parallel of terminal, thus shorten the interruption duration that terminal carries out transmitting uplink data in cell switch process.
One of ordinary skill in the art will appreciate that, the process realizing the processing method in above-described embodiment cell merge can have been come by the hardware that program command is relevant, described program can be stored in read/write memory medium, and this program performs the corresponding step in said method when performing.Described storage medium can be as: ROM/RAM, magnetic disc, CD etc.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. the processing method in cell merge, is characterized in that, comprising:
When terminal is determined to carry out cell merge, perform the random access procedure between the new access community that needs access; And, in described random access procedure, terminal starts the system message receiving described new access community, to obtain the system frame number SFN of described new access community, the procedure division obtaining the system account SFN of new access community by terminal even all with the random access procedure executed in parallel of terminal;
Wherein, the described system message starting to receive described new access community is in the random access procedure specially:
Send random access guiding PRACH Preamble message in terminal to described new access community, while the random access procedure being initiated to described new access community, terminal starts the system message receiving described new access community; Or,
After terminal sends PRACH Preamble message, any time before Stochastic accessing success, terminal starts the system message receiving described new access community.
2. method according to claim 1, is characterized in that, the method also comprises:
Before described random access procedure completes, terminal gets the Master Information Block MIB in the system message of described new access community, gets the SFN of described new access community from MIB;
Terminal complete with the random access procedure of described new access community after, enable all system configuration, described all system configuration comprise relevant to the SFN newly accessing community or irrelevant system configuration; Further, terminal sends radio resource control RRC connection to described new access community and has reshuffled message, to complete to the cell switch process of described new access community indicating terminal.
3. method according to claim 1, is characterized in that, after terminal starts to receive the system message of described new access community, the method also comprises:
Terminal complete with the random access procedure of described new access community after, enable the system configuration irrelevant with the SFN of described new access community, send RRC connection to described new access community and reshuffle message, to complete to the cell switch process of described new access community indicating terminal;
Terminal gets the MIB in the system message of described new access community, obtains the SFN of described new access community from MIB, enables the system configuration relevant to the SFN of described new access community.
4. method according to claim 1, is characterized in that, described terminal determines that carrying out cell merge is specially:
Terminal determines that receiving the RRC sent present access subzone connects reconfiguration message, and described reconfiguration message is used to indicate terminal and community is switched to described new access community from present access subzone.
5. the processing unit in cell merge, is characterized in that, comprising:
Access unit, during for determining to carry out cell merge, performs the random access procedure between the new access community that needs access;
Acquiring unit, for in described random access procedure, start the system message receiving described new access community, to obtain the SFN of described new access community, the procedure division obtaining the system account SFN of new access community by terminal even all with the random access procedure executed in parallel of terminal;
Wherein, acquiring unit specifically for: send PRACH Preamble message in terminal to described new access community, while the random access procedure being initiated to described new access community, terminal starts the system message receiving described new access community, to obtain the SFN of described new access community; Or after terminal sends PRACH Preamble message, any time before Stochastic accessing success, terminal starts the system message receiving described new access community, to obtain the SFN of described new access community.
6. device according to claim 5, is characterized in that, acquiring unit also for: before random access procedure completes, get the MIB in the system message of described new access community, from MIB, get the SFN of described new access community;
This device comprises further:
First enables unit, for complete with the random access procedure of described new access community after, enable all system configuration, described all system configuration comprise relevant to the SFN newly accessing community or irrelevant system configuration;
First transmitting element, has reshuffled message, to complete to the cell switch process of described new access community indicating terminal for sending RRC connection to described new access community.
7. device according to claim 5, is characterized in that, acquiring unit also for: after described random access procedure completes, get the MIB in the system message of described new access community, from MIB, obtain the SFN of described new access community;
This device also comprises:
Second enables unit, for complete with the random access procedure of described new access community after, enable the system configuration irrelevant with the SFN of described new access community;
Second transmitting element, has reshuffled message, to complete to the cell switch process of described new access community indicating terminal for sending RRC connection to described new access community;
3rd enables unit, after getting the SFN of new access community, enables the system configuration relevant to the SFN of described new access community for acquiring unit.
8. device according to claim 5, is characterized in that, access unit specifically for: determine to receive the RRC sent present access subzone connect reconfiguration message time, perform and need the random access procedure between the new access community accessed; Described reconfiguration message is used to indicate terminal and community is switched to described new access community from present access subzone.
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| CN104509160B (en) * | 2012-05-18 | 2018-09-21 | 华为技术有限公司 | The notification method and relevant apparatus and system of community configured information |
| KR102208633B1 (en) | 2013-11-01 | 2021-01-28 | 삼성전자 주식회사 | Method for obtaining System Frame Number in a terminal, terminal and mobile communication system |
| CN105578535A (en) * | 2014-10-08 | 2016-05-11 | 展讯通信（上海）有限公司 | Cell hard handover processing system, cell hard handover processing method and mobile terminal |
| EP3291604B1 (en) * | 2015-05-15 | 2019-09-04 | Huawei Technologies Co., Ltd. | Method for establishing connection with radio resource, user equipment and base station |
| ES2925003T3 (en) | 2015-11-18 | 2022-10-13 | Ipcom Gmbh & Co Kg | Random access to single frequency network |
| US10728854B2 (en) | 2016-12-30 | 2020-07-28 | Huawei Technologies Co., Ltd. | Cell handover method and terminal device |
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| CN101128063A (en) * | 2007-09-24 | 2008-02-20 | 中兴通讯股份有限公司 | Method for terminal random access to cellular wireless communication system and group identifier generation method |
| CN101483919A (en) * | 2008-01-08 | 2009-07-15 | 华为技术有限公司 | Wireless resource allocation method used for stochastic access and base band equipment |
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| EP1277365A1 (en) * | 2000-03-23 | 2003-01-22 | Siemens Mobile Communications S.p.A. | Access channel scheduling in a radio communication system |
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| CN101128063A (en) * | 2007-09-24 | 2008-02-20 | 中兴通讯股份有限公司 | Method for terminal random access to cellular wireless communication system and group identifier generation method |
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