CN101489257B - Transmission method and system for real-time small packet service - Google Patents
Transmission method and system for real-time small packet service Download PDFInfo
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- CN101489257B CN101489257B CN2008100562944A CN200810056294A CN101489257B CN 101489257 B CN101489257 B CN 101489257B CN 2008100562944 A CN2008100562944 A CN 2008100562944A CN 200810056294 A CN200810056294 A CN 200810056294A CN 101489257 B CN101489257 B CN 101489257B
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Abstract
The present invention discloses a method for transmitting real-time small grouping service. A base station confirms whether new service data is transmitted for user end UE with the physical resource which is informed by radio resource control RRC signaling for monitoring the high-speed physical downlink shared channel HS-PDSCH. If yes, the new service data is transmitted to UE through HS-PDSCH on the physical resource which is informed by RRC signaling for monitoring HS-PDSCH. Otherwise, the UE is transmitted with physical resource which is informed by HS-SCCH for temporarily monitoring HS-PDSCH, and then UE is transmitted with the new service data through HS-PDSCH. The invention also provides a system for transmitting real-time small grouping service. According to the application of the invention, the expenditure of control signal in the transmission of real-time small grouping service can be reduced, and furthermore the problem of time delay generated when too much service data exist on a same physical resource.
Description
Technical field
The present invention relates to the mobile data communication technology, particularly the transmission method of real-time small packet service and system.
Background technology
In 3GPP R5 agreement; In order to satisfy the demand of high-speed mobile data, services, a kind of high-speed downstream bag visit (HSDPA, High Speed Downlink Packet Access) technology has been proposed; This technology has characteristics at a high speed, has obtained promotion and application rapidly.
HSDPA is descending to comprise two channels: High-Speed Shared Control Channel (HS-SCCH, High SpeedShared Control Channel) and high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH, High SpeedPhysical Downlink Shared Channel).Wherein, HS-PDSCH is used for the bearing downlink business datum, and HS-SCCH carries scheduling and the control information of HS-PDSCH, and (UE UserEquipment) instructs separating of HS-PDSCH to be in harmonious proportion according to the decode results to HS-SCCH and deciphers user terminal.The up high-speed shared information channel (H-SICH, High Speed SharedInformation Channel) that also comprises of HSDPA is used for UE to base station feedback information.
In existing HSDPA technology; The HS-SCCH loaded information comprises: the transmission format resource combination (TFRI of 13 bits; Transform Format Resource Incorporation), comprises the time-slot code channel information of HS-PDSCH, promptly indicated the physical resource of monitoring HS-PDSCH; Transmission block size (TBS, Transform Block Size) information of 6 bits, the size of indication transmission data block; Mixed automatic retransmission request (HARQ; Hybrid Automatic Repeat Request) information; Comprise HARQ process number, 3 bit redundancy versions, the indication of 1 bit new data of 3 bits and be used for the 3 bit HS-SCCH cyclic sequences number (HCSN, HS-SCCH cyclicsequence number) that the HS-SCCH quality is estimated; The UE sign of 16 bits is used to distinguish different UEs; The command word (TPC, Transmit Power Control) of uplink synchronous and power control/(SS, SynchronisationShift), this command word is used for HS-SICH is carried out power control.According to the bit that carries among the above-mentioned HS-SCCH, take two spreading factors behind the HS-SCCH coding and be 16 code channel.
When a certain UE sends downlink service data, Downlink Control Information is sent at HS-SCCH earlier in the base station, indicates the downlink service data that this UE is arranged on the follow-up HS-PDSCH; This UE need continue to monitor to the HS-SCCH of base station for its configuration; HS-SCCH is being utilized the information of carrying among the HS-SCCH after correct reception and the decoding, the HS-PDSCH that receives is being separated to be in harmonious proportion decipher, when correct reception and decoding HS-PDSCH; Confirm (ACK through HS-SICH to base station feedback; Acknowledgement), or when incorrect reception and decoding HS-PDSCH pass through HS-SICH to the non-affirmation of base station feedback (NACK, Non Acknowledgement) message.
Each shared channel in the HSDPA technology all meets certain timing relationship, and Fig. 1 is the timing relationship of each shared channel and the control procedure sketch map of HS-SCCH in the existing HSDPA technology.Fig. 1 shows 4 frame lengths, representes with n frame to the n+3 frame respectively, comprises 7 time slots (TS, Time Slot) in each frame length.The 7th time slot at the n frame sends first HS-SCCH; That the control information among this first HS-SCCH is indicated is the 3rd HS-PDSCH that time slot begins to send of n+1 frame; UE returns reception condition to HS-SCCH through HS-SICH to the base station at the 2nd time slot of n+3 frame; And will send second HS-SCCH in the 7th time slot base station of n+2 frame; The 3rd HS-PDSCH that time slot begins to send of the corresponding n+3 frame of this HS-SCCH, the position of each shared channel in Fig. 1 also can be called timing position, n
HS-SCCHWhat represent is to send HS-SCCH and the interval of sending HS-PDSCH, and n
HS-SICHWhat represent is to send HS-PDSCH and the interval of sending HS-SICH.In the HSDPA technology, each shared channel all meets timing relationship shown in Figure 1.
In mobile data communication, there is a kind of real-time small packet service, the business datum amount during each divides into groups seldom but is divided into groups more and the transmission real-time is had relatively high expectations, and for example packet voice (VOIP, Voiceover IP) just belongs to this business.When utilizing the HSDPA technology to carry this type real-time small packet service; If also by existing regulation; Before the business datum of at every turn utilizing a little grouping of HS-PDSCH transmission, all adopt HS-SCCH to carry scheduling and the control information of HS-PDSCH; Owing to need the HS-PDSCH that utilizes more repeatedly to send business datum,, be unfavorable for that power system capacity promotes with the expense that strengthens control channel.
For solving the above-mentioned excessive problem of control channel expense that in the real-time small packet service transmission, exists; FDD (FDD at Re17; Frequency Division Duplex) in the system; Propose the mode of operation of a kind of HS-SCCH-less of being called, carried out the transmission of real-time small packet service specially.In the HS-SCCH-less mode of operation; A certain business datum is sent first to UE in the base station; Be the base station when UE sends the new business data, do not send HS-SCCH, have only and confirm that the above-mentioned business datum UE that sends does not first correctly receive and need resend the time; Just send the control information that the HS-SCCH indication resends the HS-PDSCH of above-mentioned business datum to UE earlier; Resend above-mentioned business datum of sending first through HS-PDSCH again, all need send HS-SCCH before having avoided sending each time business datum like this, saved the control channel expense.Because HS-SCCH just can be used in the base station when retransmitting business datum, so need the business datum of corresponding previous which the Transmission Time Interval TTI (Transmission Time Interval) of control information of the current indication of indication to retransmit among the HS-SCCH.
Further, the HS-SCCH-less mode of operation also has following characteristics:
1) modulation system of downlink data fixedly is defined as QPSK, so just need not in HS-SCCH, to indicate the modulation system of HS-PDSCH;
2) UE only supports predefined 4 kinds of data block sizes, thus use maximum 2 bits just can be in HS-SCCH the designation data block size, to save 4 bits than 6 bits that itself adopt;
3) HARQ is defined as only has 2 re-transmissions; Redundancy versions defines in advance; So just need not the redundancy versions of indication 3 bits in HS-SCCH, again owing to only when resending data, just using HS-SCCH, so in HS-SCCH, also need not to use the new data indication of 1 bit;
4) business datum owing to corresponding which TTI before of the control information of the current indication of indication on HS-SCCH retransmits, so can save the HARQ process number of 3 bits;
5) on the position of corresponding CRC (CRC, Cyclic Redundancy Check) on the downlink service data that HS-PDSCH sends, use 16 bit UE sign to carry out mask.
Above HS-SCCH-less mode of operation; Though reduced the expense of control channel, because the base station takies the certain physical resource to the HS-PDSCH that UE sends, these physical resources possibly be that a plurality of different UEs are shared; When a plurality of different UEs of appearance in a certain period all have more a large amount of business datums to need the base station to send; Use the real-time small packet service data of some UE of same physical resource to delay time, thus traffic affecting service quality (QoS, Quality of Service).
Summary of the invention
One object of the present invention is to provide a kind of transmission method of real-time small packet service; Use this method when the transmission real-time small packet service, to reduce the expense of control channel, and can avoid the latency issue that business datum occurs more for a long time on same time slot and the code channel resource.
Another object of the present invention is to provide a kind of transmission system of real-time small packet service; Use this system when the transmission real-time small packet service, to reduce the expense of control channel, and can avoid the latency issue that business datum occurs more for a long time on same time slot and the code channel resource.
Technical scheme of the present invention is achieved in that
A kind of transmission method of real-time small packet service, network side use the physical resource of radio resource control RRC signaling to user terminal UE notice monitoring high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH, and this method also comprises:
The base station determines whether to use the physical resource of the monitoring HS-PDSCH of said RRC signaling to send the new business data to UE;
If the base station is sent the new business data through HS-PDSCH to UE on the physical resource of the monitoring HS-PDSCH of said RRC signaling;
Otherwise the physical resource to UE sends the interim HS-PDSCH of monitoring of HS-SCCH notice on the physical resource of the interim monitoring HS-PDSCH that said HS-SCCH notifies, sends the new business data through HS-PDSCH to UE.
A kind of transmission system of real-time small packet service, this system comprises:
The RRC signaling processing module is used to use the RRC signaling to monitor the physical resource of HS-PDSCH to user terminal UE notice;
Determination module is used to determine whether use the physical resource of the monitoring HS-PDSCH of said RRC signaling to send the new business data to UE, draws result of determination;
HS-SCCH processing module, the result of determination that is used for drawing at said determination module are sent HS-SCCH to UE, the interim physical resource of monitoring HS-PDSCH of notice during for the physical resource of the monitoring HS-PDSCH that do not use said RRC signaling;
The HS-PDSCH processing module; The result of determination that is used for drawing at said determination module for the physical resource of the monitoring HS-PDSCH that do not use said RRC signaling when UE sends the new business data; On the physical resource of the interim monitoring HS-PDSCH that said HS-SCCH processing module is notified, send the new business data to UE through HS-PDSCH; The result of determination that draws at said determination module is during for the physical resource of the monitoring HS-PDSCH that uses said RRC signaling; On the physical resource of the monitoring HS-PDSCH that said RRC signaling processing module is notified, send the new business data to UE through HS-PDSCH.
Thus it is clear that, in the transmission method of real-time small packet service of the present invention, monitor the physical resource of HS-PDSCH through RRC signaling UE by network side; A certain business datum is being sent for the first time to UE in the base station; Be that the base station is when UE sends the new business data; Send business datum if confirm the physical resource of the monitoring HS-PDSCH of use RRC signaling to UE; Then on the physical resource of the monitoring HS-PDSCH of this RRC signaling, utilize HS-PDSCH to send the new business data to UE; If definite physical resource that does not use the monitoring HS-PDSCH of RRC signaling utilizes HS-SCCH notice UE to monitor the physical resource of HS-PDSCH temporarily, utilize HS-PDSCH to send the new business data again to UE.Therefore; Method provided by the invention has avoided the base station when UE sends the new business data, all to send HS-SCCH at every turn and the control channel expense that causes is excessive; Also when the physical resource of the monitoring HS-PDSCH that confirms not use the RRC signaling; By the physical resource that HS-SCCH notifies UE to monitor HS-PDSCH temporarily, avoided because the business datum time-delay that business datum possibly occur more for a long time on the physical resource of RRC signaling.
Description of drawings
Fig. 1 is the timing relationship of each shared channel and the control procedure sketch map of HS-SCCH in the existing HSDPA technology;
Fig. 2 is the transmission method flow chart of real-time small packet service of the present invention;
Fig. 3 is the transmission system structural representation of real-time small packet service of the present invention.
Embodiment
For making objects and advantages of the present invention clearer, the present invention is done further detailed explanation below in conjunction with accompanying drawing and embodiment.
At first, introduce the transmission method of real-time small packet service of the present invention in detail, in the method, key is: network side is monitored the physical resource of HS-PDSCH to the UE notice through the RRC signaling; The base station when UE sends the new business data, is sent the new business data through HS-PDSCH to UE at the physical resource of the monitoring HS-PDSCH that confirm to use the RRC signaling on this physical resource; The definite physical resource of the monitoring HS-PDSCH of RRC signaling that do not use in base station sends the new business data constantly to UE, sends HS-SCCH to UE, to the physical resource of the interim monitoring of UE notice HS-PDSCH.
Method provided by the invention can be used in the FDD system; Also can use at time division duplex (TDD; Time Division Duplex) in the system; Said physical resource refers to time slot and code channel resource when wherein being applied in the TDD system, below to the description of method provided by the invention, be example all to be applied in the TDD system.
Fig. 2 is the transmission method flow chart of real-time small packet service of the present invention, and described UE can be any UE who receives the business datum of sending the base station.Network side utilizes the RRC signaling of sending to UE, and notice is monitored time slot and the code channel resource of HS-PDSCH, and flow process shown in Figure 2 comprises:
Step 201: whether base station judges uses time slot and the code channel resource of the monitoring HS-PDSCH of RRC signaling to send the new business data to UE, if execution in step 204 then, otherwise direct execution in step 202.
In this step; When existing the business datum that surpasses predetermined amount to send on the time slot of the monitoring HS-PDSCH of RRC signaling and the code channel resource; The time slot and the code channel resource that are judged as the monitoring HS-PDSCH that does not use the RRC signaling send the new business data to UE, otherwise the time slot that just is judged as the monitoring HS-PDSCH that uses the RRC signaling and code channel resource are to UE transmission new business data.
Step 202: HS-SCCH is sent to UE in the base station, interim time slot and the code channel resource of monitoring HS-PDSCH of indication.
In this step, time slot and the code channel resource of the interim monitoring HS-PDSCH of HS-SCCH indication, with time slot and the code channel resource of the monitoring HS-PDSCH of aforementioned RRC signaling indication be inequality.
Step 203: the base station is sent new business data, process ends through HS-PDSCH to UE on the time slot and code channel resource of interim monitoring HS-PDSCH.
Step 204: the base station is sent the new business data through HS-PDSCH to UE on the time slot and code channel resource of the monitoring HS-PDSCH of RRC signaling.
Above-mentioned steps 201～step 204 has been described the process of base station to UE transmission new business data.If different new business data need be sent to UE in the base station; Then need repeat said process; And after current new business data are sent end; The base station judges that whether current new business data are the last new business data of sending to UE, if process ends then, otherwise continue execution in step 201 to begin the transmission of next new business data.
Utilize the method for flow process shown in Figure 2, in the TDD system, monitor time slot and the code channel resource of HS-PDSCH through RRC signaling UE by network side; A certain business datum is being sent for the first time to UE in the base station; Be that the base station is when UE sends the new business data; If confirm time slot and the code channel resource of the monitoring HS-PDSCH of use RRC signaling; Then on the time slot and code channel resource of the monitoring HS-PDSCH of this RRC signaling, utilize HS-PDSCH to send the new business data to UE; If definite time slot and code channel resource that does not use the monitoring HS-PDSCH of RRC signaling utilizes HS-SCCH notice UE to monitor time slot and the code channel resource of HS-PDSCH temporarily, utilize HS-PDSCH to send the new business data again to UE.Therefore; Method provided by the invention has avoided the base station when UE sends business datum, all to send HS-SCCH at every turn and the control channel expense that causes is excessive; Also when the time slot of the monitoring HS-PDSCH that confirms not use the RRC signaling and code channel resource; By time slot and the code channel resource that HS-SCCH notifies UE to monitor HS-PDSCH temporarily, avoided because the business datum time-delay that business datum possibly occur more for a long time on the time slot of RRC signaling and the code channel resource.
In method provided by the invention, can use time slot and the code channel resource of the monitoring HS-PDSCH of dual mode notice to send business datum to UE.
First kind, time slot and the code channel resource of monitoring HS-PDSCH that use the RRC signaling can be through HS-SICH to base station feedback ACK information when UE correctly receives when UE sends the new business data, and UE is incorrect not to feed back any information when receiving.After above-mentioned steps 204; If the base station does not receive the ACK information of UE feedback; Think that then UE does not correctly receive said new business data; If at this moment this new business information is confirmed to resend in the base station, for example do not reach maximum retransmission this moment, then can send HS-SCCH to UE; The time slot of monitoring HS-PDSCH when notice resends said new business data and code channel resource and retransmit the timing position of new business data at last place in once sending, the new business data that promptly retransmit are previous business datums of which TTI.Because when the new business data that re-transmission UE does not correctly receive; Just send HS-SCCH and be used for notifying time slot and the code channel resource of monitoring HS-PDSCH when retransmitting the new business data, so HS-SCCH must indicate current repeating transmission is the business datum previous which TTI sends to UE.Monitor on the time slot and code channel resource of HS-PDSCH when resending said new business data the base station then, resends said new business data through HS-PDSCH to UE.
In this case; Because re-transmission new business data are on the time slot of the monitoring HS-PDSCH of HS-SCCH notice and code channel resource, to carry out; So no matter whether UE correctly received the new business data that retransmit; All need to base station feedback information, feeding back ACK information when the new business data that correct reception retransmits is fed back nack message when the new business data that correct reception retransmits.
Second kind, use time slot and the code channel resource of the monitoring HS-PDSCH of HS-SCCH notice to send the new business data to UE; In this case; No matter whether UE has correctly received the business datum that HS-PDSCH sends, and all needs to base station feedback ACK information or nack message.
As long as UE correctly receives the HS-SCCH that send the base station; UE just can be in the HS-PDSCH that timing relationship is confirmed; Receive only time slot and the code channel resource of the monitoring HS-PDSCH of received HS-SCCH indication; And time-out is monitored time slot and code channel resource through the monitoring HS-PDSCH of RRC signaling; And no matter whether correctly receive time slot and the business datum on the code channel resource of the monitoring HS-PDSCH of HS-SCCH notice, all through up HS-SICH to base station feedback ACK information or nack message.
Above-mentioned at HS-SICH in the information of base station feedback, except that ACK information or nack message, can also comprise to HS-PDSCH channel transmitting power control command word TPC, for the power control of HS-PDSCH provides foundation.Also not occurring at present the power control to HS-PDSCH in the prior art, in the method that provides among the present invention, carry out the power control of HS-PDSCH according to the TPC of UE feedback, also is in order to guarantee that UE can better receive the business datum that send the base station.For example; When confirming that according to TPC current HS-PDSCH channel condition is better; Reduce transmitting power to reduce the interference that other UE is received business datum, when confirming that according to TPC current HS-PDSCH channel condition is relatively poor, suitably increase transmitting power and send quality to strengthen channel.
If UE does not correctly receive the HS-SCCH that send the base station; Then can miss the business datum of sending on time slot and the code channel resource of monitoring HS-PDSCH of HS-SCCH notice; Can find out by above-mentioned introduction; The information that will inevitably whether correctly receive to base station feedback if UE has received the business datum of sending through HS-PDSCH; Therefore if the base station does not receive that any feedback of UE just can judge that UE does not correctly receive HS-SCCH; At this moment the base station can be when confirming to resend; For example do not reach and arrive number of retransmissions most this moment, this business datum of sending to UE is used as the new business data on available time slot and code channel resource, sends to UE once more, available time slot here and code channel resource can refer to the HS-PDSCH code channel resource that the indication of RRC signaling is monitored or reuse time slot and the code channel resource of the interim HS-PDSCH of monitoring of HS-SCCH notice.
When accomplishing on the HS-PDSCH code channel resource of HS-SCCH notice, monitors UE; And after receiving the business datum of HS-PDSCH transmission; If do not receive the HS-SCCH that send the base station once more, then can return on the time slot of base station through the monitoring HS-PDSCH of RRC signaling and the code channel resource and continue monitoring.
For cooperating the transmission method of real-time small packet service of the present invention, a kind of new HS-SCCH structure can be set, comprise the bit number that is less than existing regulation in this new HS-SCCH structure.Following restrictive condition is set in transmission to real-time small packet service:
1) modulation scheme of downlink data is defined as a kind ofly in advance, for example is defined as QPSK, can in HS-SCCH, not indicate the modulation scheme of downlink data like this;
2) support 4 kinds of data block sizes at most for each UE configuration; In HS-SCCH, can use maximum 2 bit numbers just can indicate the data block size like this; For example use 00 to indicate first kind of data block size, 01 and indicate second kind of data block size, 10 and indicate the third data block size, 11 and indicate the 4th kind of data block size, reduced by 4 bits than 6 bits of available technology adopting;
3) redundancy versions adopts predefined mode and number of retransmissions to bind; Just needn't extraly indicate redundancy versions in the HS-SCCH kind like this; Owing to when resending business datum, need to indicate time slot and the code channel resource of interim monitoring HS-PDSCH through HS-SCCH; Therefore first business datum of sending will be not can not sent on this interim time slot of monitoring HS-PDSCH and code channel resource, just needn't carry new data among the HS-SCCH yet and indicate;
4) base station is when using the RRC signaling to UE notice HS-PDSCH code channel resource; Inform the Resource Block sequence number and the corresponding relation of HS-PDSCH code channel resource that the HS-SCCH of the follow-up transmission of UE go up to carry simultaneously, in HS-SCCH, only need like this to use a Resource Block sequence number that is no more than 3 bits just can notify the HS-PDSCH code channel resource to UE indirectly;
5) in HS-SCCH, indicating current HS-SCCH is the re-transmission of carrying out for the business datum of previous which timing position, so just need not the extra HARQ process number that in HS-SCCH, carries.
Based on above 1)-5) listed restrictive condition, in the method provided by the invention, relate in the step of HS-SCCH, employed HS-SCCH is the structure of redetermination of the present invention, loaded information can comprise following 5 parts among the new HS-SCCH of this setting:
1. be no more than the Resource Block sequence number that the HS-PDSCH of 3 bits takies; Because the base station is in advance with the time slot of this Resource Block sequence number and HS-PDSCH and the corresponding relation of code channel resource; So, only need specified resource piece sequence number just to be equivalent to monitor time slot and the code channel resource of HS-PDSCH among the HS-SCCH to the UE notice according to this corresponding relation;
2. be no more than the transmission block size of 2 bits, be used to indicate the business datum block size of HS-PDSCH transmission;
3. be no more than the transmission sequence number RSN of 2 bits, be used to indicate the number of transmissions;
4. be no more than preceding once pointer (PTR, the Previous TransmissionPointer) pointer of transmission of 3 bits, being used to indicate this HS-SCCH is the re-transmission of carrying out for the business datum of previous which timing position;
5. the UE of 16 bits sign is used to indicate UE.
According to loaded information among the new HS-SCCH of above-mentioned setting, can confirm to be carried on behind this HS-SCCH coding a spreading factor and be on 16 the code channel.
Except using the HS-SCCH structure of above-mentioned redetermination, 16 bit CRC can also be added in the base station when sending HS-PDSCH, and on the position of CRC, carry out mask by 16 specific bit identification H-RNTI of UE.
Secondly, introduce the transmission system of real-time small packet service of the present invention in detail, Fig. 3 shows the structure of this system, and this system comprises:
The RRC signaling processing module is used to use the RRC signaling to monitor the physical resource of HS-PDSCH to user terminal UE notice.
Determination module is used to determine whether use the physical resource of the monitoring HS-PDSCH of said RRC signaling to send the new business data to UE, draws result of determination.
The HS-SCCH processing module; The result of determination that is used for drawing at said determination module for the physical resource of the monitoring HS-PDSCH that do not use said RRC signaling when UE sends the new business data, send the physical resource of the interim HS-PDSCH of monitoring of HS-SCCH notice to UE.
The HS-PDSCH processing module; The result of determination that is used for drawing at said determination module for the physical resource of the monitoring HS-PDSCH that do not use said RRC signaling when UE sends the new business data; On the physical resource of the interim monitoring HS-PDSCH that said HS-SCCH processing module is notified, send the new business data to UE through HS-PDSCH; The result of determination that draws at said determination module for the physical resource of the monitoring HS-PDSCH that uses said RRC signaling when UE sends the new business data; On the physical resource of the monitoring HS-PDSCH that said RRC signaling processing module is notified, send the new business data to UE through HS-PDSCH.
In the transmission system of real-time small packet service of the present invention, monitor the physical resource of HS-PDSCH through RRC signaling UE; Sending a certain business datum for the first time to UE; Be that the base station is when UE sends the new business data; Send business datum if confirm the physical resource of the monitoring HS-PDSCH of the said RRC signaling of use to UE; On the physical resource of the monitoring HS-PDSCH of this RRC signaling, utilize HS-PDSCH to send the new business data to UE; Send the new business data if confirm the physical resource that does not use the RRC signaling to monitor HS-PDSCH to UE, utilize HS-SCCH notice UE to monitor the physical resource of HS-PDSCH temporarily, utilize HS-PDSCH to send the new business data again to UE.Therefore; Method provided by the invention has avoided each control channel expense of when UE sends the new business data, all sending HS-SCCH and causing excessive; Also when confirming not use the monitoring HS-PDSCH physical resource of RRC signaling; By the physical quantity resource that HS-SCCH notifies UE to monitor HS-PDSCH temporarily, avoided because the business datum time-delay that business datum possibly occur more for a long time on the physical resource of RRC signaling.
The transmission system of the invention described above real-time small packet service; Can be applied in the FDD system; Can also be applied in the TDD system, when wherein being applied in the TDD system, physical resource refers to time slot and code channel resource; Below to the introduction of system provided by the invention, all based on situation about being applied in the TDD system.
Above-mentioned determination module can comprise: judge performance element and result of determination acquiring unit.
Judge performance element, be used for time slot and the code channel resource of the monitoring HS-PDSCH of definite said RRC signaling processing module notice, whether exist business datum to need to send above predetermined amount.
The result of determination acquiring unit; Be used for confirming time slot and the code channel resource of the monitoring HS-PDSCH of said RRC signaling processing module notice at said judgement performance element; When existing the business datum that surpasses predetermined amount to send, draw the time slot of the monitoring HS-PDSCH that does not use said RRC signaling and code channel resource sends result from the new business data to UE; Confirm at said judgement performance element on the time slot and code channel resource of the monitoring HS-PDSCH that said RRC signaling processing module is notified; Do not exist in the time of to send above the business datum of predetermined amount, draw the time slot and the result of code channel resource of the monitoring HS-PDSCH that uses said RRC signaling to UE transmission new business data.
Above-mentioned HS-PDSCH processing module can comprise: a HS-PDSCH processing module and the 2nd HS-PDSCH processing module.
The one HS-PDSCH processing module; The result of determination that is used for drawing at said determination module for the time slot of the monitoring HS-PDSCH that uses said RRC signaling and code channel resource when the UE transmission new business data; On the time slot and code channel resource of the monitoring HS-PDSCH that said RRC signaling processing module is notified, send the new business data to UE through HS-PDSCH; Receive the ACK information of UE feedback;
Said the 2nd HS-PDSCH processing module; The result of determination that is used for drawing at determination module for the time slot of the monitoring HS-PDSCH that do not use said RRC signaling and code channel resource when the UE transmission new business data; On the time slot and code channel resource of the interim monitoring HS-PDSCH that said HS-SCCH processing module is notified, send the new business data to UE through HS-PDSCH; Receive the ACK information or the nack message of UE feedback.
On the basis of above-mentioned HS-PDSCH processing module internal structure, above-mentioned HS-SCCH processing module can comprise: a HS-SCCH processing module and the 2nd HS-SCCH processing module.
A said HS-SCCH processing module; The result of determination that is used for drawing at said determination module for the time slot of the monitoring HS-PDSCH that do not use said RRC signaling and code channel resource when UE sends the new business data, send time slot and the code channel resource of the interim monitoring of HS-SCCH notice HS-PDSCH to UE;
Said the 2nd HS-SCCH processing module is used for when a said HS-PDSCH processing module does not receive the ACK information of UE feedback, sends time slot and the code channel resource of the monitoring HS-PDSCH of HS-SCCH notice when resending said new business data to UE.
System provided by the invention is positioned at network side, can be according to method work provided by the invention.
In sum, more than being merely the preferred embodiment of present embodiment, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. the transmission method of a real-time small packet service is characterized in that, the network example is used the physical resource of radio resource control RRC signaling to user terminal UE notice monitoring high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH, and this method also comprises:
The base station determines whether to use the physical resource of the monitoring HS-PDSCH of said RRC signaling to send the new business data to UE;
If the base station is sent the new business data through HS-PDSCH to UE on the physical resource of the monitoring HS-PDSCH of said RRC signaling;
Otherwise the physical resource to UE sends the interim HS-PDSCH of monitoring of HS-SCCH notice on the physical resource of the interim monitoring HS-PDSCH that said HS-SCCH notifies, sends the new business data through HS-PDSCH to UE.
2. the method for claim 1 is characterized in that, said base station determines whether to use the physical resource of the monitoring HS-PDSCH of said RRC signaling to send the new business data to UE to be:
Whether the base station is confirmed on the physical resource of monitoring HS-PDSCH of said RRC signaling exist the new business data above predetermined amount to need to send.
3. according to claim 1 or claim 2 method is characterized in that this method is applied in the TDD system, and said physical resource is time slot and code channel resource.
4. method as claimed in claim 3 is characterized in that, said network side is further notified the corresponding relation of Resource Block sequence number that HS-PDSCH takies and said time slot, code channel resource through the RRC signaling;
Said base station determines whether to use the physical resource of monitoring HS-PDSCH of said RRC signaling before UE sends the new business data, further comprises: for said new business data a kind of modulation system is set in advance; Support 4 kinds of data block sizes at the most for said UE configuration in advance; The maximum retransmission of preset said new business data, and to retransmitting the binding redundancy versions each time.
5. method as claimed in claim 4 is characterized in that, the HS-SCCH loaded information that send said base station comprises:
Be no more than the Resource Block sequence number that the HS-PDSCH of 3 bits takies, the time slot and the code channel resource that are used to indicate HS-PDSCH; Be no more than the transmission block size of 2 bits, be used to indicate the transmission block size; Be no more than the transmission sequence number of 2 bits, be used to indicate the number of transmissions; The preceding once pointer PTR pointer of transmission that is no more than 3 bits is used to indicate the timing position that corresponding last time of new business data of re-transmission sends; The UE sign of 16 bits is used to identify UE;
It is on 16 the code channel that said HS-SCCH is carried on a spreading factor.
6. the method for claim 1 is characterized in that, on the physical resource of said monitoring HS-PDSCH at the RRC signaling, after UE sent the new business data, this method further comprised through HS-PDSCH:
The base station do not receive UE through high-speed shared information channel HS-SICH feedback affirmation ACK information and confirm when UE resends said new business data; Send HS-SCCH to UE; When resending said new business data, notice monitors the physical resource of HS-PDSCH; And on the physical resource of the HS-PDSCH that when resending said new business data, monitors, resend said new business data to UE through HS-PDSCH;
Perhaps; When the base station receives the ACK information of UE through HS-SICH feedback; If the last new business data that said new business data are not the base stations sends to UE are returned and are carried out the said physical resource that determines whether to use the monitoring HS-PDSCH of said RRC signaling sends step from the new business data to UE; If said new business data are last new business data that send to UE the base station, process ends.
7. method as claimed in claim 6; It is characterized in that; On the physical resource of the HS-PDSCH that monitor when resending said new business data said base station;, after UE resends said new business data, further comprise through HS-PDSCH: UE is to base station feedback ACK information or nack message.
8. the method for claim 1 is characterized in that, said on the physical resource of the interim monitoring HS-PDSCH that HS-SCCH notifies, after UE sent the new business data, this method further comprised through HS-PDSCH:
UE confirms when UE resends said new business data to base station feedback nack message and base station through HS-SICH; HS-SCCH is sent to UE in the base station; When resending said new business data, notice monitors the physical resource of HS-PDSCH; And when resending said new business data, monitor on the physical resource of HS-PDSCH, resend said new business data through HS-PDSCH to UE;
Perhaps; UE passes through HS-SICH when base station feedback ACK information; If the last new business data that said new business data are not the base stations sends to UE are returned and are carried out physical resource that said base station determines whether to use the monitoring HS-PDSCH of said RRC signaling sends step from business datum to UE; If said new business data are last new business data that send to UE the base station, process ends.
9. method as claimed in claim 8 is characterized in that, said UE when base station feedback nack message or ACK information, also is directed against the emissive power control command word of HS-PDSCH through HS-SICH to base station feedback through HS-SICH.
10. the method for claim 1; It is characterized in that; When the HS-SCCH that send to UE said base station was correctly received by UE, UE suspended the physical resource of the monitoring HS-PDSCH that monitors said RRC signaling in a corresponding Transmission Time Interval TTI according to timing relationship.
11. the method for claim 1; It is characterized in that; When said physical resource and this HS-SCCH that sends the interim HS-PDSCH of monitoring of HS-SCCH notice to UE correctly do not received; If the base station is confirmed to resend said new business data to UE, determine whether also to exist the available physical resources of monitoring HS-PDSCH, if; Then in the available physical resources of the monitoring HS-PDSCH of RRC signaling, or send HS-SCCH to UE and notify on the available physical resources of said monitoring HS-PDSCH, send said new business data through HS-PDSCH; If the base station is confirmed not resend said new business data to UE, abandon said new business data.
12. the transmission system of a real-time small packet service is characterized in that, this system comprises:
The RRC signaling processing module is used to use the RRC signaling to monitor the physical resource of HS-PDSCH to user terminal UE notice;
Determination module is used to determine whether use the physical resource of the monitoring HS-PDSCH of said RRC signaling to send the new business data to UE, draws result of determination;
HS-SCCH processing module, the result of determination that is used for drawing at said determination module are sent HS-SCCH to UE, the interim physical resource of monitoring HS-PDSCH of notice during for the physical resource of the monitoring HS-PDSCH that do not use said RRC signaling;
The HS-PDSCH processing module; The result of determination that is used for drawing at said determination module for the physical resource of the monitoring HS-PDSCH that do not use said RRC signaling when UE sends the new business data; On the physical resource of the interim monitoring HS-PDSCH that said HS-SCCH processing module is notified, send the new business data to UE through HS-PDSCH; The result of determination that draws at said determination module is during for the physical resource of the monitoring HS-PDSCH that uses said RRC signaling; On the physical resource of the monitoring HS-PDSCH that said RRC signaling processing module is notified, send the new business data to UE through HS-PDSCH.
13. system as claimed in claim 12 is characterized in that, this system applies is in the TDD system, and said physical resource is time slot and code channel resource.
14. system as claimed in claim 12 is characterized in that, said determination module comprises: judge performance element and result of determination acquiring unit;
Said judgement performance element is used for confirming the physical resource of the monitoring HS-PDSCH of said RRC signaling processing module notice whether have the new business data above predetermined amount to need to send;
Said result of determination acquiring unit; Be used for confirming the physical resource of the monitoring HS-PDSCH of said RRC signaling processing module notice at said judgement performance element; When existing the new business data that surpass predetermined amount to send, the physical resource that draws the monitoring HS-PDSCH that does not use said RRC signaling sends the result of new business data to UE; Confirm at said judgement performance element on the physical resource of the monitoring HS-PDSCH that said RRC signaling processing module is notified; Do not exist in the time of need sending above the new business data of predetermined amount, the physical resource that draws the monitoring HS-PDSCH that uses said RRC signaling sends the result of new business data to UE.
15. system as claimed in claim 12 is characterized in that, said HS-PDSCH processing module comprises: a HS-PDSCH processing module and the 2nd HS-PDSCH processing module;
A said HS-PDSCH processing module; The result of determination that is used for drawing at said determination module for the physical resource of the monitoring HS-PDSCH that uses said RRC signaling when UE sends the new business data; On the physical resource of the monitoring HS-PDSCH that said RRC signaling processing module is notified, send the new business data to UE through HS-PDSCH; Receive the ACK information of UE feedback;
Said the 2nd HS-PDSCH processing module; The result of determination that is used for drawing at determination module for the physical resource of the monitoring HS-PDSCH that do not use said RRC signaling when UE sends the new business data; On the physical resource of the interim monitoring HS-PDSCH that said HS-SCCH processing module is notified, send the new business data to UE through HS-PDSCH; Receive the ACK information or the nack message of UE feedback.
16. system as claimed in claim 15 is characterized in that, said the 2nd HS-PDSCH processing module also receives the emissive power control command word to HS-PDSCH of UE feedback in ACK information that receives the UE feedback or nack message while.
17. system as claimed in claim 15 is characterized in that, said HS-SCCH processing module comprises: a HS-SCCH processing module and the 2nd HS-SCCH processing module;
A said HS-SCCH processing module; The result of determination that is used for drawing at said determination module does not use the physical resource of monitoring HS-PDSCH of said RRC signaling when UE sends the new business data, sends the physical resource of the interim HS-PDSCH of monitoring of HS-SCCH notice to UE;
Said the 2nd HS-SCCH processing module is used for when a said HS-PDSCH processing module does not receive the ACK information of UE feedback, sending the physical resource that the HS-SCCH notice resends the monitoring HS-PDSCH of said new business data to UE.
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| CN2008100562944A CN101489257B (en) | 2008-01-16 | 2008-01-16 | Transmission method and system for real-time small packet service |
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| CN101998295B (en) * | 2009-08-14 | 2013-06-12 | 电信科学技术研究院 | Resource indication method and equipment |
| WO2020011163A1 (en) * | 2018-07-09 | 2020-01-16 | 华为技术有限公司 | Power adjustment method, terminal and storage medium |
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