CN100484301C - High-speed uplink grouping access service reconfiguration method - Google Patents
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Abstract
The invention discloses a reconfiguration method of high-speed ascending sectionalization switch-in business, which is characterized by the following: eliminating or reducing abnormal possibilities in the HARQ procedure disposal; setting RSN as zero for UE at reconfiguration time and HARQ procedure condition as initial transmission condition; clearing HARQ buffer-memory directly for Node B; making local transmission as initial transmission; sending ACK/NACK to UE according to the decoding result; or comparing the allowing maximum E-TFCI before and after reconfiguration; setting less E-TFCI as threshold when UE receives synchronous reconfiguration submit order from RNC; making E-TFCI transmission data not over the threshold for UE from next initial transmission; executing according to normal flow path after the reconfiguration becomes effective.
Description
Technical field
The present invention relates to mobile communication technology, particularly high speed uplink packet inserts (High SpeedUplink Packet Access is called for short " HSUPA ") professional method for reconfiguration.
Background technology
Third generation partner program (3rd Generation Partnership Project, abbreviation " 3GPP ") vital tissue as moving communicating field has promoted 3G (Third Generation) Moblie (The Third Generation, be called for short " 3G ") standardization effort of technology, the carrying of uplink and downlink business all is based on dedicated channel in its early stage protocol version.Wherein, the message transmission rate that uplink and downlink can reach in 99 editions (Release 99, are called for short " R99 ") is 384 kilobits per seconds (Kbps).
Along with the development of mobile communication technology, 3G technology is also in constantly development evolution.Many to flow and delay requirement higher data business, as video, Streaming Media and download etc., need system that higher transmission rate and shorter time delay are provided.High speed downlink packet inserts (High Speed Downlink PacketAccess is called for short " HSDPA ") and high speed uplink packet access (High Speed Uplink PacketAccess is called for short " HSUPA ") is exactly the important evolution of 3G technology.Be different from the scheduling of packet in the R99 version and retransmit by radio network controller (Radio Network Controller, be called for short " RNC ") control, the scheduling of the packet among HSDPA and the HSUPA and re-transmission etc. are by Node B (NodeB, claim the base station again) control, this control is quicker, and better adaptive channel changes, reduces the throughput of propagation delay time and increase data.HSDPA and HSUPA can provide the peak rate up to 14.4 MBPSs (Mbps) and 5.76Mbps respectively, and the availability of frequency spectrum also is greatly improved.
Wherein, HSUPA has been incorporated in 2004 in the version of 3GPP the 6th edition (Release 6, are called for short " R6 ") as the high speed uplink data packet access technique.HSUPA adopts shorter Transmission Time Interval (Transmission Timing Interval, be called for short " TTI ") and frame length (2ms or 10ms) to realize quick self-adapted control, use mixed self-adapting repeat requests (Hybrid Automatic RepeatRequest, be called for short " HARQ ") and, improved up spectrum efficiency based on the fast uplink dispatching technique of Node B.
The HARQ technological synthesis forward error correction and re-transmission, the dedicated channel that is used to strengthen (EnhancedDedicated Channel, abbreviation " E-DCH ") physical layer retransmits fast, and improves the decoding performance of physical layer by the soft merging between first biography and the re-transmission.
In order to realize subscriber equipment (User Equipment, abbreviation " UE ") high-efficiency transfer of upstream data, HSUPA has increased two uplink physical channels and three down physical channels newly, they are respectively up enhancing dedicated data transmission channel (the E-DCH DedicatedPhysical Data Channel that is used for carrying user data, be called for short " E-DPDCH "), be used to transmit accompanied by physical layer signaling, for the E-DPDCH demodulation provides the up enhancing Dedicated Control Channel of following signaling (E-DCH DedicatedPhysical Control Channel, be called for short " E-DPCCH "), be used to control absolute grant channel (the E-DCH Absolute Grant Channel of the uplink speed of UE, be called for short " E-AGCH ") and relative authorization channel (E-DCH Relative Grand Channel, be called for short " E-RGCH "), and be used to indicate the whether correct retransmission indicating chanel (E-DCH HARQIndicator Channel is called for short " E-HICH ") of up process data transmission.
Wherein, E-DPCCH is the physical channel that is used for transmitting the control information of following E-DCH, and the inside has comprised the re-transmission sequence number (Retransmission Sequence Number is called for short " RSN ") of 2bit and represented to transmit state of a process.RSN is 0 the initial transmission that is transmitted as, and is not that 0 transmission is re-transmission: once retransmitting RSN is 1, and it is 2 that secondary retransmits RSN, and later retransmission RSN after this is 3.
E-AGCH only exists in the wireless connections Serving cell, is used to indicate the peak transfer rate of UE uplink permission, and the frequency ratio of adjusting is lower; E-RGCH can exist at the service and the non-service cell of wireless connections, is used to indicate UE to adjust uplink speed by a fixed step size, and the frequency ratio of adjustment is higher, reaches as high as every TTI once; Among the HSUPA, UE knows by E-HICH whether data are correctly received, if incorrect, will initiate to retransmit, otherwise send new data.
UE up sign indicating number resource and power resource are that each UE exclusively enjoys in HSUPA, and Node B need not dispatch at up sign indicating number resource and power resource.But the certain transmission rate of up each UE can produce corresponding interference at Node B receiving terminal among the HSUPA, and Node B can ensure the demodulation performance of UE in the interference range that allows.But, surpass the scope of setting if disturb, just may make the demodulation performance of some UE to ensure, so the basic principle of Node B scheduling HSUPA is the interference level of controlling and allowing UE to bring at Node B receiving terminal.The up fast dispatch of Node B is according to the interference level and setting thresholding of current area, determine the transmitted data rates of the up permission of UE, and when interference level is too high, can reduce the up message transmission rate of UE fast, make uplink interference in the target zone of setting.
The HSDPA/HSUPA technology will provide high performance service with low cost, and multimedia provides may in order to realize the real large-scale market-oriented mobile internet interconnection agreement of using (Internet Protocol is called for short " IP ").Because packet voice (Voice over IP, be called for short " VoIP ") be internet protocol multimedia subsystem (IP Multimedia Subsystem, be called for short " IMS ") and the main driving of all-IP net, also be the key of fixed network and wireless network two net unifications, therefore most important for the mobile communication development in future.Based on the VoIP of HSDPA/HSUPA the solution of development potentiality is arranged beyond doubt in the future most, also only under the such high bandwidth situation of HSDPA/HSUPA, VoIP just can provide the capacity similar to circuit switching.
RSN is that UE sends to Node B and comes the residing state of notification process: if current RSN is 0, as initial transmission, HARQ goes the data after the rate-matched directly to send to and does decoding, simultaneously with these metadata caches; If RSN is not 0, go data and the data in the buffer memory after the rate-matched to be undertaken sending to decoding after the soft merging (adopting saturated computation system) this HARQ by Symbol (symbol), also the data after the soft merging are carried out buffer memory simultaneously.
If uplink transmission data is correct in Node B decoding, Node B just sends ACK (affirmation) message to UE, and empties the HARQ buffer memory; Otherwise Node B just sends NACK (mistake) message, and requires data retransmission, adds up number of retransmissions simultaneously.If number of retransmissions reaches the limiting value of maximum retransmission among the MAC-d flow, empty the HARQ buffer memory, and, also need to send HARQ-failure (failure) and give RNC if service Node is B.
When process is in just the biography state, if Node B sent ACK last time, the RSN of current reception is not 0, the last relatively RSN of current RSN is continuous and Connection Frame Number (Connect FrameNumber, abbreviation " CFN ") difference is 4 TTI, then do not handle E-DPDCH, this continues to send ACK, and process still is in biography state just; If what sent last time is the maximum that NACK and number of retransmissions reach maximum retransmission among the MAC-d Flow (media interviews control dedicated stream), current RSN is not 0, does not handle E-DPDCH, and process still is in biography state just.
Process be in the re-transmission state and RSN discontinuous, if current RSN is 0, empty the relevant HARQ buffer memory of this process so, this is handled as just passing, and sends ACK/NACK and process status according to this decode results decision.If service Node B and previous number of retransmissions reach the minimum value of maximum retransmission among the MAC-d flow, also need to send HARQ-failure to RNC; If current RSN is not 0, empty the relevant HARQ buffer memory of this process, send ACK/NACK and process status according to this decode results decision.If NACK, number of retransmissions adds 1, if number of retransmissions reaches the maximum of maximum retransmission among the MAC-d flow, process enters biography state just, empties the HARQ buffer memory, if service Node is B, also needs to send HARQ-failure to RNC.
At present, agreement is not defined in when reshuffling, and how UE should be provided with RSN.
In actual applications, there is following problem in such scheme: the HARQ process can't be handled abnormal conditions when the HSUPA business was reshuffled.
Cause the main cause of this situation to be, because when the HSUPA business is reshuffled, if from a transmission block (Transport Block, abbreviation " TB ") the bigger business of Size (size) is reconfigured to the less business of TB Size, and when reshuffling submission, current RSN is not 0, can make the data of current process also need to retransmit so, reshuffle after the submission, UE can't select suitable enhancing transformat combination indication (Enhanced-Transport Format CombinationIndicator, be called for short " E-TFCI "), and further cause this HARQ process to handle.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of high-speed uplink grouping access service reconfiguration method, makes when the HSUPA business is reshuffled, and eliminates or reduce in the processing of HARQ process unusual possibility to occur.
For achieving the above object, the invention provides a kind of high-speed uplink grouping access service reconfiguration method, comprise following steps:
When A took place by described reshuffling, the subscriber equipment re-transmission sequence number was set to 0, and process status is set to the initial transmission state;
When described reshuffling takes place in B, the base-station node re-transmission sequence number is set to 0, empties mixed self-adapting repeat requests buffer memory, and this is transmitted as initial transmission, process status is set to the initial transmission state, sends confirmation according to this decode results to described subscriber equipment.
In this external described method,, retransmit by the layer higher than mixed self-adapting repeat requests layer if cause current transmission data defect because reshuffle.
In this external described method, comprise following steps:
When described reshuffling taken place, described subscriber equipment is before carrying out described steps A, judge whether reshuffle the maximum transmitted piece that the back allowed littler than the maximum transmitted piece that is allowed before reshuffling, if execution in step A then, otherwise continue to use current re-transmission sequence number and process status.
In this external described method, comprise following steps:
When described reshuffling taken place, described base-station node is before carrying out described step B, judge whether the maximum transmitted piece that is allowed after reshuffling is littler than the maximum transmitted piece that is allowed before reshuffling, if execution in step B then, otherwise continue to use current mixed self-adapting repeat requests buffer memory and process status.
In addition, described method is applied to broadband CDMA system.
By finding that relatively the main distinction of technical scheme of the present invention and prior art is, is reshuffling constantly, UE RSN is set to 0, and the HARQ process status is set to the initial transmission state.Correspondingly, Node B directly empties the HARQ buffer memory, and as initial transmission, process is in biography state just with this transmission, sends ACK/NACK according to this decode results to UE.
Reshuffling constantly, UE and Node B carry out before the above-mentioned initialization to the HARQ process, whether the maximum transmitted piece after judgement is reshuffled earlier is less than the maximum transmitted piece before reshuffling, if just carry out above-mentioned initialization, otherwise RSN, HARQ are not carried out state and the HARQ buffer memory carries out initialization.
When UE receives synchronized reconfiguration submiting command from RNC, the maximum E-TFCI that is allowed before and after the heavier configuration, with wherein less E-TFCI as thresholding, from just spread the beginning next time, UE only uses the E-TFCI transmission data that are no more than this thresholding, carries out by normal flow after coming into force when reshuffling again.
Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly, made UE and Node B know clearly that all the current data that will pass are new data by reshuffling initialization constantly, thereby the HARQ process can correctly be handled, guaranteed professional normally reshuffling.
Initialization may cause the current data bust this, and this can retransmit by high level and solve.Compare by size before initialization, can when the maximum transmitted piece is big from little change, not do initialization, continue current data have been passed, thereby reduced the probability of high-rise re-transmission maximum transmitted piece before and after reshuffling.
By reshuffling the size that limits E-TFCI before coming into force in advance, make E-TFCI to drop to the scope that the back allows of reshuffling in advance before coming into force reshuffling, thus the generation of mistake when reducing HARQ and retransmitting.
Description of drawings
Fig. 1 is according to the professional method for reconfiguration flow chart of the HSUPA of first embodiment of the invention;
Fig. 2 is according to the professional method for reconfiguration flow chart of the HSUPA of second embodiment of the invention;
Fig. 3 is according to the professional method for reconfiguration flow chart of the HSUPA of third embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is by revising state of a process, number of retransmissions and RSN in 321 agreements, and UE and Node B can make correct judgement to the RSN after the decoding according to the rules during feasible reshuffling, and then correctly handle the HARQ process.
The professional method for reconfiguration of the HSUPA of first embodiment of the invention as shown in Figure 1, increase in this agreement and reshuffle constantly to the RSN of UE and the regulation of HARQ process: RSN is set to 0, and process status is set to the initial transmission state, that is:
Set CURRENT_TX_NB to 0 (it is the initial transmission state that the current process state is set),
Set CURRENT_RSN to 0 (it is 0 that current RSN is set)
After business changed when reshuffling, Node B directly emptied the HARQ buffer memory, and as initial transmission, process is made as biography state just with this transmission, and returns ACK/NACK message according to this decode results to UE.By reshuffling initialization constantly, make UE and Node B know clearly that all the current data that will pass are new data, thereby the HARQ process can correctly be handled, guaranteed professional normally reshuffling.
In step 101, carry out the HSUPA business between UE and the Node B, when business was reshuffled, UE was made as 0 with RSN, and process status is set to the initial transmission state; Node B also is made as RSN 0 and empty the HARQ buffer memory.Initialization may cause the current data bust this, is indicated current transmission data re-transmission by the high level of HARQ, avoids the damaged of data.
In step 102, the next data that UE will need to transmit are transferred to Node B in first biography mode.
In step 103, after Node B receives data, RSN is made as 1, and to data decoding and buffer memory.If the result of decoding is correct, then send ACK message to UE; Otherwise require UE to retransmit.
Processing to first biography data in processing in the above-mentioned steps 102 and 103 and the prior art is consistent, and later possible re-transmission also uses the mode of prior art to handle, the relevant initialization process when key is to reshuffle in the step 101.
The professional method for reconfiguration of the HSUPA of second embodiment of the invention as shown in Figure 2.
In step 201, carry out the HSUPA business between UE and the Node B, when reshuffling, whether the maximum TB that is allowed after the UE judgement is reshuffled is littler than the maximum TB that is allowed before reshuffling, if then UE is made as 0 with RSN, process status is set to the initial transmission state; Otherwise continue to use current RSN and process status.
When reshuffling, Node B judges also whether reshuffle the maximum TB that allowed of back littler than the maximum TB that is allowed before reshuffling, if then Node B is made as 0 with RSN, and empties the HARQ buffer memory; Otherwise continue to use current RSN and current HARQ buffer memory.
In step 202, the maximum TB that is allowed after reshuffling is littler than the maximum TB that is allowed before reshuffling, and UE gives Node B according to the high level indication of HARQ with current transmission data re-transmission, and this process status is the initial transmission state.Compare by size before initialization, can when the maximum transmitted piece is big from little change, not do initialization, continue current data have been passed, thereby reduced the probability of high-rise re-transmission maximum transmitted piece before and after reshuffling.
Similar and the step 103 of step 203.
The professional method for reconfiguration of the HSUPA of third embodiment of the invention as shown in Figure 3.
In step 301, initiate the synchronized reconfiguration warning order by RNC and give Node B.
In step 302, Node B carries out this order, and returns ACK message.
In step 303, RNC also sends the synchronized reconfiguration order to UE.
In step 304, UE carries out this order, and returns ACK message.
In step 305, after RNC received the ACK message of Node B and UE, submiting command was given Node B, wherein contains and reshuffles the entry-into-force time.
In step 306, RNC simultaneously also submiting command give UE, and also contain and reshuffle the entry-into-force time.
In step 307, Node B returns ACK message to this submiting command.
In step 308, after UE received this submiting command, the information from this order knew and reshuffles the available maximum E-TFCI in back, and with reshuffle before available maximum E-TFCI to relatively, with wherein less one as thresholding.Then, return the ACK message of this submiting command to RNC.
In step 309, from just spread the beginning next time, UE only uses the E-TFCI that thresholding is set smaller or equal to this, comes into force until replacement.By reshuffling the size that limits E-TFCI before coming into force in advance, make E-TFCI to drop to the scope that the back allows of reshuffling in advance before coming into force reshuffling, thus the generation of mistake when reducing HARQ and retransmitting.
The method for reconfiguration of above-mentioned HSUPA business can be applied to Wideband Code Division Multiple Access (WCDMA) systems such as (WidebandCode Division Multiple Access are called for short " WCDMA ").
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (5)
1. a high-speed uplink grouping access service reconfiguration method is characterized in that, comprises following steps:
When A took place by described reshuffling, the subscriber equipment re-transmission sequence number was set to 0, and process status is set to the initial transmission state;
When described reshuffling takes place in B, the base-station node re-transmission sequence number is set to 0, empties mixed self-adapting repeat requests buffer memory, and this is transmitted as initial transmission, process status is set to the initial transmission state, sends confirmation according to this decode results to described subscriber equipment.
2. high-speed uplink grouping access service reconfiguration method according to claim 1 is characterized in that, if cause current transmission data defect because reshuffle, is retransmitted by the layer higher than mixed self-adapting repeat requests layer.
3. high-speed uplink grouping access service reconfiguration method according to claim 1 is characterized in that, comprises following steps:
When described reshuffling taken place, described subscriber equipment is before carrying out described steps A, judge whether reshuffle the maximum transmitted piece that the back allowed littler than the maximum transmitted piece that is allowed before reshuffling, if execution in step A then, otherwise continue to use current re-transmission sequence number and process status.
4. high-speed uplink grouping access service reconfiguration method according to claim 1 is characterized in that, comprises following steps:
When described reshuffling taken place, described base-station node is before carrying out described step B, judge whether the maximum transmitted piece that is allowed after reshuffling is littler than the maximum transmitted piece that is allowed before reshuffling, if execution in step B then, otherwise continue to use current mixed self-adapting repeat requests buffer memory and process status.
5. according to each described high-speed uplink grouping access service reconfiguration method in the claim 1 to 4, it is characterized in that described method is applied to broadband CDMA system.
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| CN100496007C (en) * | 2007-03-09 | 2009-06-03 | 华为技术有限公司 | Method for Configuring Enhanced Dedicated Channel Hybrid Automatic Repeat Request Indication Channel Power Offset Value, Base Station and Radio Access Network System |
| CN101316404B (en) * | 2007-05-30 | 2011-08-24 | 中兴通讯股份有限公司 | Method for improving scheduling efficiency of wireless communication ascending packet |
| CN101340715B (en) * | 2007-07-05 | 2012-10-10 | 中兴通讯股份有限公司 | High-speed uplink packet access method of multi-carrier time division synchronous code division multiple access system |
| CN101179513B (en) * | 2007-12-11 | 2010-10-27 | 华为技术有限公司 | Base station and method for determining service flux |
| CN101505212B (en) * | 2008-02-04 | 2012-11-07 | 上海贝尔股份有限公司 | Method for operating HARQ buffer |
| CN101978725B (en) * | 2008-03-17 | 2013-06-19 | 日本电气株式会社 | Communication system, base station, mobile station, retransmission control method, and retransmission program |
| CN102055573B (en) * | 2009-11-03 | 2013-05-15 | 电信科学技术研究院 | Method, equipment and system for processing HARQ (Hybrid Automatic Repeat reQuest) progress |
| CN104125048B (en) * | 2013-04-25 | 2019-02-01 | 中兴通讯股份有限公司 | Hybrid automatic repeat-request merges interpretation method and device |
| CN110190937B (en) * | 2013-09-29 | 2021-10-22 | 华为技术有限公司 | Data transmission method and equipment |
| CN106817205B (en) * | 2015-11-27 | 2020-09-15 | 中兴通讯股份有限公司 | Dedicated physical data channel data scheduling method and device |
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Effective date of registration: 20220210 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: xFusion Digital Technologies Co., Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |