CN100441042C - Radio allocation activation time selecting method controlled by radio resource - Google Patents
Radio allocation activation time selecting method controlled by radio resource Download PDFInfo
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- CN100441042C CN100441042C CNB2005100710529A CN200510071052A CN100441042C CN 100441042 C CN100441042 C CN 100441042C CN B2005100710529 A CNB2005100710529 A CN B2005100710529A CN 200510071052 A CN200510071052 A CN 200510071052A CN 100441042 C CN100441042 C CN 100441042C
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Abstract
The present invention discloses a radio allocation activation time selecting method controlled by a radio resource, which comprises the steps: step (1), the PDU number of divided transmission blocks of a massage is obtained according to the length of the message, the length of the PDU and the size of an RLC; step (2), the required time of transmitting the message by an RNC is obtained according to a transmission format set of a transmission channel, a transmission time interval, the maximum block error rate tolerated by the RNC, and the number of; step (3), the time from transmitting one TTI datum to the reception of the datum by an RLC layer of a UE is arranged into gamma; step (4), a current CFN is combined for obtaining activation time according to the time of the RNC and the overmeasure r; step (5), the activation time is filled in a communication cell of the activation time in the message and is transmitted to the UE through the RLC and an MAC.
Description
Technical field
The present invention relates to universal mobile telecommunications system UMTS radio resource control layer RRC user terminal UE is carried out radio-resource-configuration, specifically, relate to the choosing method of aerial interface protocol radio resource control layer RRC activationary time in sending to the downstream arrangements message of user terminal UE among the Access Network UTRAN of a kind of universal mobile telecommunications system ground.
Background technology
In the WCDMA system, the radio resource control layer RRC of UTRAN (Radio ResourceControl) is responsible for wireless resource allocation and management, is responsible for the mobile management work of user terminal UE in the wireless access side, referring to figure one.When the RRC of UTRAN decision is carried out the configuration of Radio Resource to UE or is revised, by user plane protocol wireless chain control layer RLC (Radio LinkControl), medium access control layer MAC (Medium Access Control) is with descending RRC message, set up (RADIO BEARER SETUP) as radio bearer, reprovision of radio bearer (RADIOBEARER RECONFIGURATION) or the like sends to UE, simultaneously the relevant Radio Resource of this UE among the UTRAN is set up or revised, referring to figure two.The configuration take-effective mode that comprises in to above-mentioned message in agreement 3GPP 25.331 V6.1.0 (3GPP is the international organization that is called as " 3G (Third Generation) Moblie partner program ") is described, and two kinds of modes that come into force are arranged: come into force or come into force synchronously.Come into force in other words UE starts this configuration after receiving this message immediately in the shortest time; Be meant that UTRAN is provided with certain activationary time in message and come into force synchronously, with Connection Frame Number CFN (Connected Frame Number) expression, at this CFN constantly, UTRAN and UE start this configuration simultaneously, discarded old configuration.Then, the response message of UE will send to UTRAN in new configuration.
UTRAN sends in old configuration and triggers the descending RRC message that the UE Radio Resource is set up or revised, and different message has different message-lengths.Because the transmittability of MAC transmission channel is limited, the message that message-length is big is cut apart at rlc layer, carries out timesharing and sends.So the activationary time that is disposed and the difference of current time, the i.e. biasing of activationary time need enough big, can guarantee that this RRC message sent to UE before the new configuration take-effective of UTRAN.UE sends response message to UTRAN in new configuration in addition, if on the basis that guarantees the signaling process success, the activationary time biasing that UTRAN disposed is less, and UE just can send response message to UTRAN as soon as possible in new configuration so, accelerates finishing of flow process.Therefore, how to select a suitable activationary time to reduce the time-delay of calling out or switching, improve the performance of system, becoming has problem to be solved at present.
Summary of the invention
Technical problem to be solved by this invention provides a kind of radio allocation activation time selecting method controlled by radio resource, reduces the time-delay of calling out or switching, to improve the performance of system.
For solving the problems of the technologies described above, it is as follows to the invention provides scheme:
A kind of radio allocation activation time selecting method controlled by radio resource is characterized in that may further comprise the steps:
Step 1: radio resource control layer RRC obtains the transmission block number PDUnumber of this descending radio configuration message after wireless chain control layer RLC is cut apart according to the length RLC_Size of the protocol Data Unit PDU of length M sgLength, the wireless chain control layer RLC of descending radio configuration message;
Step 2: obtain maximum transmitting time TTInumber and the needed time T _ rnc of RNC this descending radio configuration message of transmission that RNC sends this descending radio configuration message according to TFS Transport Format Set TFS, the Transmission Time Interval TTI of transmission channel, the descending maximum Block Error Rate Max_BLER% and the described PDUnumber of step 1 of wireless network control layer RNC tolerance;
Step 3: the pending time such as receive after the data to transmission time, the base station of base station according to physical layer Base-Band Processing time, RNC, aerial transmission time and UE deal with data time are provided with an allowance r;
Step 4: described RNC sends the needed time T _ rnc of this descending radio configuration message, the described allowance r of step 3 according to step 2, and in conjunction with current Connection Frame Number CFNcurrent, obtains the activationary time Activation_Time of configuration take-effective;
Step 5: the described activationary time Activation_Time that comes into force of step 4 is filled in the activationary time cell in the descending radio configuration message, sends to user terminal UE by wireless chain control layer RLC, medium access control layer MAC.
In the radio allocation activation time selecting method controlled by radio resource of the present invention, the transmission block number of descending radio configuration message described in the described step 1 after wireless chain control layer RLC is cut apart
Here the PDUnumber that obtains rounds up.
In the radio allocation activation time selecting method controlled by radio resource of the present invention, the maximum transmitted piece that can transmit that can inquire about the length RLC_Size coupling that obtains rlc protocol data cell PDU among this transmission channel format collection TFS according to the TFS Transport Format Set TFS of transmission channel in the described step 2 is counted Trch_MaxTBNumber.
In the radio allocation activation time selecting method controlled by radio resource of the present invention, RNC described in the described step 2 sends the maximum transmitting time of this descending radio configuration message
In the radio allocation activation time selecting method controlled by radio resource of the present invention, RNC described in the described step 2 sends this needed time T _ rnc=of descending radio configuration message (TTInumber-1) * TTI.
In the radio allocation activation time selecting method controlled by radio resource of the present invention, allowance γ ' in the middle of in described step 3, being provided with one, γ ' comprises that RNC such as receives after the data at the pending time to transmission time of base station, base station, aerial transmission time and UE deal with data time, γ '≤40ms.
In the radio allocation activation time selecting method controlled by radio resource of the present invention, the allowance γ described in the step 3=2*TTI+ γ '.
In the radio allocation activation time selecting method controlled by radio resource of the present invention, activationary time Activation_Time=(the T_rnc+r)/10+CFNcurrent of configuration take-effective described in the described step 4.
Compared with prior art, the invention has the advantages that:
Radio allocation activation time selecting method controlled by radio resource of the present invention, can guarantee that promptly descending radio configuration message arrives user terminal UE before configuration take-effective, can make that again the entry-into-force time of new configuration is the shortest, thereby accelerate finishing of signaling process, reduce the flow processing times such as system calling, switching, improve the performance of system.
Technical problem to be solved by this invention, technical scheme and beneficial effect will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Description of drawings
Fig. 1 is the schematic diagram of WCDMA air interface protocol layer.
Fig. 2 is UTRAN sends a flow chart from downstream arrangements message to UE.
Fig. 3 is the flow chart of the method for the invention.
Embodiment
With reference to Fig. 3, be the flow chart of radio allocation activation time selecting method controlled by radio resource of the present invention.
1, radio resource control layer RRC obtains the transmission block number PDUnumber of this descending radio configuration message after wireless chain control layer RLC is cut apart according to the length RLC_Size of the protocol Data Unit PDU of length M sgLength, the wireless chain control layer RLC of descending radio configuration message.
That is the transmission block number of descending radio configuration message after wireless chain control layer RLC is cut apart,
2, obtain maximum transmitting time TTInumber and RNC that RNC sends this descending radio configuration message according to the descending maximum Block Error Rate Max_BLER% of Transmission Time Interval TTI, the wireless network control layer RNC tolerance of the transmission channel of TFS Transport Format Set TFS, the RLC of transmission channel mapping and the described PDUnumber of step 1 and send the needed time T _ rnc of this descending radio configuration message.
Wherein, the maximum transmitted piece that can transmit that can inquire about the length RLC_Size coupling that obtains rlc protocol data cell PDU among this transmission channel format collection TFS according to the TFS Transport Format Set TFS of transmission channel is counted Trch_MaxTBNumber;
Then, described RNC sends the maximum transmitting time of this descending radio configuration message
Then, described RNC sends this needed time T _ rnc=of descending radio configuration message (TTInumber-1) * TTI.
3, such as receive after the data the pending time to transmission time, the base station of base station according to physical layer Base-Band Processing time, RNC, aerial transmission time and UE deal with data time are provided with an allowance r.
Allowance γ ' in the middle of one is set here, and γ ' comprises that RNC such as receives after the data at pending time, aerial transmission time and UE deal with data time, γ '≤40ms to transmission time, the base station of base station.
Described allowance γ=2*TTI+ γ '.
4, send the needed time T _ rnc of this descending radio configuration message, the described allowance r of step 3 according to the described RNC of step 2, and, obtain the activationary time Activation_Time of configuration take-effective in conjunction with current Connection Frame Number CFNcurrent;
Then, the activationary time Activation_Time=of described configuration take-effective (T _ rnc+r)/10+CFNcurrent.
5, the described activationary time Activation_Time that comes into force of step 4 is filled in the activationary time cell in the descending radio configuration message, sends to user terminal UE by wireless chain control layer RLC, medium access control layer MAC.
Further describe again below.
At first, radio resource control layer RRC be provided with descending radio configuration message length M sgLength, wireless chain control layer RLC protocol Data Unit PDU length RLC_Size, RLC the mapping transmission channel Transmission Time Interval TTI, wireless network control layer RNC the tolerance descending maximum Block Error Rate Max_BLER%, the TFS Transport Format Set TFS and the current Connection Frame Number CFNcurrent of transmission channel;
Obtain the transmission block number of descending radio configuration message after wireless chain control layer RLC is cut apart
Here PDUnumber rounds up.
The maximum transmitted piece that can transmit that can inquire about the length RLC_Size coupling that obtains rlc protocol data cell PDU among this transmission channel format collection TFS according to the TFS Transport Format Set TFS of transmission channel is counted Trch_MaxTBNumber again;
Then, obtain the maximum transmitting time that described RNC sends this descending radio configuration message
And then, obtaining described RNC and send this needed time T _ rnc=of descending radio configuration message (TTInumber-1) * TTI, ms gets in the unit here.
Here, we can know from WCDMA transmission course and Base-Band Processing process, allowance γ=2*TTI+ γ ', wherein, 2*TTI is that the physical layer of base station interweaves and time of UE physical layer deinterleaving, allowance γ ' in the middle of being provided with, γ ' comprises the transmission delay of RNC to NODE B, NODE B such as receives after the data at pending time, aerial transmission time, UE deal with data time.Through the checking of real system, γ ' maximum is no more than 40ms.
Send the needed time T _ rnc of this message, allowance r according to described RNC again, and being provided with one, to activate bias be T_offset, be converted into the unit of CFN after, obtain T_offset=(T_rnc+ γ)/10=(T_rnc+ γ '+2*TTI)/10;
And, obtain the activationary time Activation_Time=CFNcurrent+T_offset of configuration take-effective in conjunction with current Connection Frame Number CFNcurrent;
At last, the activationary time Activation_Time that will come into force is filled in the activationary time cell in the descending radio configuration message, sends to user terminal UE by wireless chain control layer RLC, medium access control layer MAC.
A kind of radio allocation activation time selecting method controlled by radio resource of the present invention, be not restricted to listed utilization in specification and the execution mode, it can be applied to various suitable the present invention's field fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore under the situation of the spirit and scope of the universal that does not deviate from claim and equivalency range and limited, the examples shown that the present invention is not limited to specific details, representational equipment and illustrates here and describe.
Claims (8)
1, a kind of radio allocation activation time selecting method controlled by radio resource is characterized in that may further comprise the steps:
Step 1: radio resource control layer obtains the transmission block number PDUnumber of this descending radio configuration message after wireless chain control layer is cut apart according to the length RLC_Size of the protocol Data Unit of the length M sgLength of descending radio configuration message and wireless chain control layer;
Step 2: the descending maximum Block Error Rate Max_BLER% and the described PDUnumber of step 1 that tolerate according to TFS Transport Format Set, Transmission Time Interval TTI, the wireless network control layer of transmission channel obtain maximum transmitting time TTInumber and the needed time T _ rnc of wireless network control layer this descending radio configuration message of transmission that the wireless network control layer sends this descending radio configuration message;
Step 3: pending time, aerial transmission time and user terminal processes data time such as receive after the data to transmission time, the base station of base station according to physical layer Base-Band Processing time, wireless network control layer an allowance r is set;
Step 4: send the needed time T _ rnc of this descending radio configuration message, the described allowance r of step 3 according to the described wireless network control layer of step 2, and in conjunction with current Connection Frame Number CFNcurrent, obtain the activationary time Activation_Time of configuration take-effective, activationary time Activation_Time=(the T_rnc+r)/10+CFNcurrent of described configuration take-effective;
Step 5: the described activationary time Activation_Time that comes into force of step 4 is filled in the activationary time cell in the descending radio configuration message, sends to user terminal by wireless chain control layer and medium access control layer.
2, radio allocation activation time selecting method controlled by radio resource according to claim 1 is characterized in that: the transmission block number of descending radio configuration message described in the described step 1 after wireless chain control layer is cut apart
3, radio allocation activation time selecting method controlled by radio resource according to claim 2 is characterized in that: the transmission block number PDUnumber of descending radio configuration message after wireless chain control layer is cut apart rounds up.
4, radio allocation activation time selecting method controlled by radio resource according to claim 2 is characterized in that: can inquire about obtaining this transmission channel format and concentrate the maximum transmitted piece that can transmit of the length RLC_Size coupling of protocol data unit of wireless links control layer to count Trch_MaxTBNumber in the described step 2 according to the TFS Transport Format Set of transmission channel.
5, radio allocation activation time selecting method controlled by radio resource according to claim 4 is characterized in that: wireless network control layer described in the described step 2 sends the maximum transmitting time of this descending radio configuration message
6, radio allocation activation time selecting method controlled by radio resource according to claim 4 is characterized in that: wireless network control layer described in the described step 2 sends this needed time T _ rnc=of descending radio configuration message (TTInumber-1) * TTI.
7, radio allocation activation time selecting method controlled by radio resource according to claim 1, it is characterized in that: allowance γ ' in the middle of in described step 3, being provided with, γ ' comprises that the wireless network control layer such as receives after the data at pending time, aerial transmission time and user terminal processes data time, γ '≤40ms to transmission time of base station, base station.
8, radio allocation activation time selecting method controlled by radio resource according to claim 7 is characterized in that: the allowance γ described in the step 3=2*TTI+ γ '.
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| CN101394332B (en) * | 2007-09-18 | 2011-04-20 | 中兴通讯股份有限公司 | Ultra-mobile wideband session releasing method used for activated access terminal |
| US8873471B2 (en) * | 2007-10-01 | 2014-10-28 | Qualcomm Incorporated | Method and apparatus for implementing LTE RLC header formats |
| CN102547987B (en) * | 2010-12-14 | 2014-09-17 | 联芯科技有限公司 | Method and device for transmitting radio configuration message |
| CN102143535A (en) * | 2011-03-31 | 2011-08-03 | 上海华为技术有限公司 | Method and network side equipment for configuring activation time |
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| CN1437803A (en) * | 2000-05-22 | 2003-08-20 | 高通股份有限公司 | Method and apparatus for soft handoff in a CDMA communication system |
| WO2001097411A1 (en) * | 2000-06-12 | 2001-12-20 | Samsung Electronics Co., Ltd | Method of assigning an uplink random access channel in a cdma mobile communication system |
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