CN101064864A - Method for counting and access controlling in MBMS service - Google Patents
Method for counting and access controlling in MBMS service Download PDFInfo
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- CN101064864A CN101064864A CNA2006100781853A CN200610078185A CN101064864A CN 101064864 A CN101064864 A CN 101064864A CN A2006100781853 A CNA2006100781853 A CN A2006100781853A CN 200610078185 A CN200610078185 A CN 200610078185A CN 101064864 A CN101064864 A CN 101064864A
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Abstract
The invention discloses a counting and meeting control method of MBMS operation. The counting method is when broadcasting operation center initiates a MBMS operation; developing base station transmits command in MCCH channel to require terminal count aiming at the MBMS operation; the terminal calculates succedent random meeting time of count response based on terminal mark; and sends count response to developing base station when the random meeting time comes; the developing base station receives at least one count responses, sends message in later MCCH channel to require terminal stop sending count response to the MBMS operation; the terminal receives command and stops the course of counting. It simplifies the process of network and terminal in LTE system.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly relate to counting and connection control method thereof in a kind of multi-medium broadcast/group broadcast service (MBMS) business.
Background technology
In the 3G system, at transmission 3G multi-medium broadcast/group broadcast service (MultimediaBoadcast/Multicast Service, when MBMS) professional, wireless access network (UMTS Radio AccessNetwork, UTRAN) (the Controlling Radio NetworkController of the control radio network controller in, CRNC) for add up specific cell wish to receive a certain multicast/multicast service conversation the user terminal number time carry out counting/restatement number (counting/re-counting) process, after knowing the user terminal number of wishing reception MBMS business in this sub-district, which kind of MBMS transmission method wireless access network will determine to adopt in this sub-district, as point-to-point (Point To Point, PTP) or point-to-multipoint (PointTo Multipoint).
Wherein, MBMS counting process is used to control the user terminal number that radio network controller (CRNC) statistics is wished the data of this MBMS of reception.And the MBMS restatement process of counting is to initiate in the MBMS data transmission procedure, also has how many user terminals in the sub-district in this MBMS business of reception to know, its process is identical with counting process.
Because the user terminal number is unpredictable in the sub-district, therefore in counting process, need to adopt connection control method, avoid great amount of terminals (UE) to send counting response (Counting Response) simultaneously, impact to network.
Counting process is in existing a kind of MBMS business: (seeing 3GPP R6 protocol description)
Terminal is at MBMS indicating channel (MBMS Indicator Channel, MICH) receive the notice (Notification) that it adds the MBMS business on, read MBMS point-to-multipoint control channel (MBMS point-to-multipoint Control Channel at once, MCCH), the IE that comprises in the MBMSMODIFIED SERVICES message of receiving " MBMS required UE action " is set at ' Acquire counting info ' or " Acquire counting info-PTM RBs unmodified ", and then terminal (UE) side begins to carry out the Counting process.
MBMS indicating channel (MICH) is the Page Indication Channel that is similar to PICH, is used to notify terminal to prepare to receive the MBMS business.
MBMS point-to-multipoint control channel (MCCH) is the channel of MBMS transmission phase related control information.
Terminal receives MCCH up to next adjustment cycle, to obtain MBMS ACCESSINFORMATION message.
Comprised following content among the MBMS ACCESS INFORMATION:
Access?probability?factor-Idle；
Access?probability?factor-URA_PCH/Cell_PCH/Cell_FACH；
And the indication information that whether terminal is counted under the URA_PCH, CELL_PCH, CELL_FACH state.
The content of MBMS ACCESS INFORMATION message can change in a MCCH adjustment cycle, and network can upgrade access probability factor, and changes the indication information whether certain state UE carries out Counting.
Terminal is being received MBMS ACCESS INFORMATION message, and wherein comprises one or more the added MBMS business of terminal, and then terminal should be taked different control methods at each business:
If-terminal is in the idle pattern
-then generating random number " rand ", rand evenly distributes in 0≤rand＜1;
If-rand is less than the value of " Access probability factor-Idle " indication, Radio Resource control is set up on terminal indication upper strata, and (Radio Resources Control RRC) connects, and the reason of foundation is ' MBMS reception '; Set up successfully if Radio Resource control (RRC) connects, process finishes.
-otherwise;
If ■ MBMS MODIFIED SERVICES message comprises " Continue MCCHreading " and value is TRUE, terminal continues to read MBMS ACCESSINFORMATION message, and finishes up to this change cycle (modification period).
■ otherwise continue to read MBMS ACCESS INFORMATION message changes the cycle until the next one.
If-terminal is in URA_PCH, Cell_PCH or Cell_FACH state, and " Connected mode counting scope " indicates the terminal of this state to count
-generating random number " rand ", rand evenly distributes in 0≤rand＜1;
If the value that-rand indicates less than " Access probability factor-URA_PCH/Cell_PCH/Cell_FACH ",
If the current adjustment cycle cell of ■ update process is success not
◆ initiate cell updating course, former because " MBMS reception "
◆ if above-mentioned condition is applied to a plurality of business, and terminal is only initiated cell updating course one time.
◆ if the cell update success, process finishes.
-otherwise,
" Continue MCCH reading " is TRUE in the message if ■ triggers,
◆ if message comprises " Continue MCCH reading " and value is TRUE, and continue to read MBMS ACCESS INFORMATION message, changes the cycle up to the next one.
◆ otherwise continue to read MBMS ACCESS INFORMATION message, and stop at the end position in this change cycle.
-else process finishes.
If terminal detects in the access information cycle and MBMS ACCESSINFORMATION is not provided or receives MBMS ACCESS INFORMATION and do not comprise the MBMS business that terminal adds that terminal is ended MBMS counting process.
In above-mentioned counting process, the flow process of MBMS service counting access control process as shown in Figure 2:
1. when the MCCH message of an initiation counting (Counting) is ready for sending, control radio network controller (CRNC) is the initial access probability factor of this MBMS traffic set, at different conditions (idle mode, in URA_PCH, CELL_PCH, CELL_FACH), initial access probability factor can be different;
2. the control radio network controller MCCH message that will comprise access probability factor sends;
3. terminal is after receiving access probability factor, and terminal inner judges whether to carry out counting response (Counting response) by the Probability Detection process; The terminal monitoring MCCH message of different conditions, and upgrade access probability factor at any time according to MCCH message, finish up to completing successfully counting response (CountingResponse) or network side indication counter;
4. control radio network controller (CRNC) judges whether to need to upgrade access probability factor;
5. control radio network controller (CRNC) resets access probability factor;
6. the access probability factor after control radio network controller (CRNC) will upgrade sends to terminal by MCCH message;
7. the terminal of different conditions is used new access probability factor to carry out the Probability Detection process and is determined whether carrying out counting response.
Control radio network controller (CRNC) and terminal repeat step 3～7, finish up to counting or the restatement process of counting.
Counting process counts in this sub-district the user terminal number of wishing to receive the MBMS business, so that determine to adopt which kind of transmission means: can set up dedicated channel for each user terminal and adopt PTP to carry out the MBMS transfer of data if the user terminal number is less; If receiving the user terminal number of this MBMS business reaches some and will adopt the mode of PTM to broadcast; If do not have in the sub-district user terminal wish to receive this in this sub-district the transmission this MBMS business.
Why design the counting process of complexity like this in the existing technology, mainly be in order to prevent that great amount of terminals from initiating Radio Resource control (RRC) simultaneously and connecting the request of foundation or cell update, avoid at a time sending a large amount of signalings simultaneously, increased Random Access Channel (Random Access Channel, load RACH).
In LTE (Long Term Evolution), be in the project of 3GPP about the evolution of 3G later release, MBMS provides more high-speed data transmission, has supported bigger bandwidth, and will support more user terminal in each sub-district, usually, no longer adopted point-to-point (PTP) mode to transmit, (PTM) transmits and all adopt point-to-multipoint.In the process of MBMS transmission data, counting process still is essential, still, existing counting control procedure method is very complicated, network side needs constantly to set and upgrade access probability factor, and the operation of end side is also quite complicated, finishes whole counting/restatement and counts the process need long period.Therefore, be necessary to propose new counting and connection control method thereof.
Summary of the invention
The object of the present invention is to provide counting and connection control method thereof in a kind of MBMS business.It has reduced the message transmission of counting process, has simplified the processing of network and terminal in the LTE system.
For realizing method of counting in a kind of MBMS business that the object of the invention provides, it comprises the following steps:
Steps A) when broadcast multicast service center was initiated a MBMS business, evolution base station required terminal pins that this MBMS business is carried out counting process in MCCH channel signaling;
Step B) after terminal receives the signaling that requires to count, according to terminal label calculate subsequently the access at random of carrying out counting response constantly; And insert the moment at random at this and come to send counting response to evolution base station temporarily;
Step C) in a single day evolution base station receives at least one counting response, then sends message on the MCCH channel that occurs subsequently, requires terminal to stop the professional counting response that sends to this MBMS;
Step D) after terminal receives the signaling that stops counting process, ends this counting process.
Described method of counting can also comprise the following steps:
Evolution base station is according to step C) result upgrade MCCH message, the MBMS business datum is sent to terminal.
Described step B) subsequently the access at random of carrying out counting response obtains with the Integer N delivery for terminal label constantly in.
Described Integer N is according to one or more parameter setting in radius of society, Random Access Channel configuration, the professional number of users of estimating of MBMS.
The described access at random constantly for frequency division duplex system to sending the Random Access Channel of preamble sign indicating number at random.
The described access at random constantly is uplink pilot time slot to tdd systems.
Described step C) can also comprise the following steps:
If evolution base station is not received counting response within a certain period of time, then evolution base station is determined the user terminal of this MBMS business of hopeless reception in this sub-district, ends professional relevant signaling of this MBMS and professional transmission.
Described terminal label is a terminal iidentification, perhaps international mobile subscriber identification code, perhaps Temporary Mobile Subscriber Identity sign indicating number etc.
For realizing the object of the invention, also provide in a kind of MBMS business and counted connection control method, it comprises the following steps:
Steps A ') after terminal receives the signaling that requires to count, according to terminal label calculate subsequently the access at random of carrying out counting response constantly; And insert the moment at random at this and come to send counting response to evolution base station temporarily;
Step B ') in a single day evolution base station receives at least one counting response, then sends message on the MCCH channel that occurs subsequently, requires terminal to stop the professional counting response that sends to this MBMS.
Described steps A ') in subsequently the access at random of carrying out counting response obtain with the Integer N delivery for terminal label constantly.
Described steps A ') comprise the following steps:
Described Integer N is according to one or more parameter setting in radius of society, Random Access Channel configuration, the professional number of users of estimating of MBMS.
Described step B ') also comprises the following steps:
If evolution base station is not received counting response within a certain period of time, then evolution base station is determined the user terminal of this MBMS business of hopeless reception in this sub-district, ends professional relevant signaling of this MBMS and professional transmission.
The invention has the beneficial effects as follows: counting and connection control method thereof in the MBMS business of the present invention, in the LTE system, when determining only to adopt the mode of PTM to transmit for the MBMS business, a kind of access control implementation method of simple counting is provided, reduce the message transmission of counting process, and simplified the processing of network and terminal.
Description of drawings
Fig. 1 counts process flow diagram in the existing MBMS business;
Fig. 2 counts process flow diagram in the MBMS business of the present invention.
Embodiment
Further describe counting and connection control method thereof in the MBMS business of the present invention below in conjunction with accompanying drawing 2.
LTE of the present invention system by terminal after receiving the signaling that requires to count, carry out counting response constantly according to the access at random that terminal label is determined subsequently, select to initiate the time point of up access, user terminal is dispersed in carries out up access procedure on the different time points.
As shown in Figure 2, counting and connection control method thereof comprise the following steps: in the MBMS business of the embodiment of the invention
Step 1) is as broadcast multicast service center (Broadcast/Multimedia Service Center, when BM-SC) initiating a MBMS business, evolution base station (e-NodeB) requires terminal pins that this MBMS business is carried out counting process in MCCH channel signaling;
When broadcast multicast service center (BM-SC) is initiated a MBMS business, whether evolution base station is in order to be hopeful to receive the user terminal of this MBMS business in definite sub-district, in MCCH channel MCCH signaling, require terminal (UE) to count/restatement number (counting/re-counting) process at this MBMS business;
The MCCH channel require terminal pins to this MBMS business count/restatement is counted the MCCH signaling of process, can be the described message format in 3GPP 25.331 standards, also can be other message format at the LTE system.
Step 2) evolution base station on the MCCH channel to this message signaling of terminal transmission;
After the step 3) terminal receives the signaling that requires to count, according to terminal label calculate subsequently the access at random of carrying out counting response (Counting Response) constantly; And insert the moment at random at this and come to send counting response to evolution base station temporarily;
Wherein, terminal label ID can be terminal iidentification (UE_ID), also can be international mobile subscriber identification code (International Mobile Subscriber Identity, IMSI) or Temporary Mobile Subscriber Identity sign indicating number (Temporary Mobile Subscriber Identity, TMSI), the information that perhaps other can marking terminals.
Terminal calculates with formula (1) according to terminal label and subsequently which to insert the moment at random and carry out counting response after receiving the signaling that requires to count;
Access_Index＝ID?mod?N (1)
The i.e. access at random of carrying out counting response subsequently obtains with the Integer N delivery for terminal label constantly.
The concrete numerical value of N can be set according to the characteristics of sub-district, as the settings such as one or more parameter in radius of society, Random Access Channel configuration, the professional number of users of estimating of MBMS;
Access at random described here is constantly for Frequency Division Duplexing (FDD) (Frequency Division Duplex, FDD) system is for sending the Random Access Channel of preamble sign indicating number (Random AccessChannel at random, RACH), terminal for synchronous regime, can send the preamble sign indicating number, and on the RACH channel, send counting response (Counting Response).(Time DivisionDuplex, TDD) system is uplink pilot time slot (UpPTS) to time division duplex.Concrete condition is looked the LTE system random access process implementation method that 3GPP determines at last.
In LTE system counts of the present invention and connection control method thereof, random access procedure is that FDD sends preamble sign indicating number and counting response (CountingResponse) information earlier on RACH by a step access procedure; Perhaps two go on foot access procedures, the first step sends the preamble sign indicating number, and second step sent counting response (Counting Response) information.The TDD system sends uplinksynchronization preamble signal now on UpPTS, after evolution base station (e-NodeB) response, send other information such as L2 control messages on the RACH that uses.
The invention is not restricted to insert at random which kind of specific implementation of employing, the present invention selects to initiate the time point of up access for the user, access procedure does not afterwards limit, size according to the number of users of the configuration of sub-district internal zone radius, Random Access Channel, MBMS business changes, the user can be dispersed on the different time points by the present invention and carry out up access procedure, avoided a large number of users to initiate up access procedure simultaneously, reduced and congested probability occurs.
By formula (1), terminal sends the cycle in conjunction with minimum RACH channel and can determine that oneself will meet sb. at the airport to insert at which and send counting response (Counting Response) constantly.
As being 1 by formula (1) result of calculation, this terminal sends counting response in the next RACH channel transmission cycle so.
Evolution base station is broadcast to user terminal by the general information in the MCCH message with this value, also can carry this value in the signaling of specifying the MBMS business to count.
Step 4: in a single day evolution base station (e-NodeB) is received M counting response, then sends message on the MCCH channel that occurs subsequently, requires terminal to stop the professional counting response that sends to this MBMS;
Evolution base station (e-NodeB) is monitored the MCCH channel, in case receive M counting response, then sends message on the MCCH channel that occurs subsequently, requires terminal to stop the professional counting response that sends to this MBMS.
The M here can be 1, promptly receives the counting response of a user terminal at least, if factors such as operator's consideration cost are reluctant to carry out the transmission of bandwidth MBMS business for 1 user terminal, also can be other positive integers.
Preferably, after this step 4, also comprise the following steps:
Step 41) if evolution base station is not received counting response within a certain period of time, then evolution base station is determined the user terminal of this MBMS business of hopeless reception in this sub-district, ends professional relevant signaling of this MBMS and professional transmission.
This certain hour need be set this time according to corresponding relations different in the step 3).If evolution base station is not received counting response in this time, then evolution base station can determine not have in this sub-district user terminal to wish to receive this MBMS business, then ends the professional relevant signaling transmission of this MBMS.
Preferably, requiring the counting process to this MBMS business to finish simultaneously, evolution base station will be ignored other counting responses of being received before the transmission counting is ceased and desisted order.
Evolution base station has been known M (as 1) receiving MBMS service by terminal, requirement finishes the counting process of this MBMS business, but the cycle of MCCH does not also arrive, do not send and require terminal to stop the professional message that sends counting response this MBMS, and other-end requires to stop signaling because do not receive, may continue to send counting response to evolution base station, therefore other counting responses that the evolution base station of terminal transmission is received before evolution base station transmission counting is ceased and desisted order will be ignored by evolution base station.
Step 5: after terminal receives the signaling that stops counting process, end this counting process.
Step 6: evolution base station upgrades MCCH message according to the result of step 4, and the MBMS business datum is sent to terminal.
Equally, in the MCCH message that the MCCH channel is upgraded, can be the described message format in 3GPP 25.331, also can be other message format at the LTE system.
If according to the result of step 4, evolution base station (e-NodeB) is judged in the sub-district does not have the user to wish to receive this MBMS business, and evolution base station (e-NodeB) will no longer transmit this business relevant information and data so.
In the MBMS data transmission procedure,, be not described in detail in embodiments of the present invention if initiation restatement number (re-counting) process can be undertaken by the described counting process of the embodiment of the invention.
Counting of the present invention and connection control method thereof, compare with existing counting/restatement process of counting, do not need to set, transmit and upgrade access probability factor, end side does not need to carry out the Probability Detection process yet, direct mark by terminal, determine that as the corresponding relation of terminal iidentification, IMSI, TMSI and time terminal sends the time of response, it implements more existing counting/restatement, and to count process simple, also can avoid great amount of terminals (UE) to send simultaneously simultaneously and respond the up signaling traffic load problem of bringing.
Concerning those skilled in the art, above embodiment carries out detailed, exemplary explanation as just example to the present invention.In the scope that does not deviate from aim of the present invention, those of ordinary skills can replace resulting technical scheme by various being equal to according to above-mentioned specific embodiment, be appreciated that these technical schemes all should be included in the scope of claim of the present invention and the scope that is equal within.
Claims (12)
1. method of counting in the MBMS business is characterized in that, comprises the following steps:
Steps A) when broadcast multicast service center was initiated a MBMS business, evolution base station required terminal pins that this MBMS business is carried out counting process in MCCH channel signaling;
Step B) after terminal receives the signaling that requires to count, according to terminal label calculate subsequently the access at random of carrying out counting response constantly; And insert the moment at random at this and come to send counting response to evolution base station temporarily;
Step C) in a single day evolution base station receives at least one counting response, then sends message on the MCCH channel that occurs subsequently, requires terminal to stop the professional counting response that sends to this MBMS;
Step D) after terminal receives the signaling that stops counting process, ends this counting process.
2. method of counting according to claim 1 is characterized in that, also comprises the following steps:
Evolution base station is according to step C) result upgrade MCCH message, the MBMS business datum is sent to terminal.
3. method of counting according to claim 1 is characterized in that, described step B) in subsequently the access at random of carrying out counting response obtain with the Integer N delivery for terminal label constantly.
4. method of counting according to claim 3 is characterized in that, described Integer N is according to one or more parameter setting in radius of society, Random Access Channel configuration, the professional number of users of estimating of MBMS.
5. according to each described method of counting of claim 1 to 4, it is characterized in that described the access at random constantly for frequency division duplex system to sending the Random Access Channel of preamble sign indicating number at random.
6. according to each described method of counting of claim 1 to 4, it is characterized in that described the access at random constantly is uplink pilot time slot to tdd systems.
7. according to each described method of counting of claim 1 to 4, it is characterized in that described step C) also comprise the following steps:
If evolution base station is not received counting response within a certain period of time, then evolution base station is determined the user terminal of this MBMS business of hopeless reception in this sub-district, ends professional relevant signaling of this MBMS and professional transmission.
8. according to each described method of counting of claim 1 to 4, it is characterized in that described terminal label is a terminal iidentification, perhaps international mobile subscriber identification code, perhaps Temporary Mobile Subscriber Identity sign indicating number.
9. count connection control method in a MBMS business, it is characterized in that, comprise the following steps:
Steps A ') after terminal receives the signaling that requires to count, according to terminal label calculate subsequently the access at random of carrying out counting response constantly; And insert the moment at random at this and come to send counting response to evolution base station temporarily;
Step B ') in a single day evolution base station receives at least one counting response, then sends message on the MCCH channel that occurs subsequently, requires terminal to stop the professional counting response that sends to this MBMS.
10. counting connection control method according to claim 9 is characterized in that, described steps A ') in subsequently the access at random of carrying out counting response obtain with the Integer N delivery for terminal label constantly.
11. counting connection control method according to claim 9 is characterized in that, described steps A ') comprise the following steps:
Described Integer N is according to one or more parameter setting in radius of society, Random Access Channel configuration, the professional number of users of estimating of MBMS.
12., it is characterized in that described step B ' according to each described method of counting of claim 9 to 11) also comprise the following steps:
If evolution base station is not received counting response within a certain period of time, then evolution base station is determined the user terminal of this MBMS business of hopeless reception in this sub-district, ends professional relevant signaling of this MBMS and professional transmission.
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