CN1917411B - System and method for realization of accessing high speed down going packets in multiple carriers - Google Patents
System and method for realization of accessing high speed down going packets in multiple carriers Download PDFInfo
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- CN1917411B CN1917411B CN2005100918705A CN200510091870A CN1917411B CN 1917411 B CN1917411 B CN 1917411B CN 2005100918705 A CN2005100918705 A CN 2005100918705A CN 200510091870 A CN200510091870 A CN 200510091870A CN 1917411 B CN1917411 B CN 1917411B
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Abstract
In the invention, between the sending end and the receiving end the control message and data message are transmitted through multi carrier waves; the shunting of data carrier wave is made in physical layer of the sending end, and the process of sending data stream to the mapping of the carrier wave is completed in the mapping process of the physical channel of physical layer; then, each carrier wave independently completes the spread modulation and air transmission; after receiving and demodulating each carrier, the receiving end completes the data combination when the physical layer makes inverse mapping.
Description
Technical field
The present invention relates to the digital mobile communication technical field, particularly support the system and method for the high speed downlink packet access of multicarrier in third generation time division SCDMA (TD-SCDMA) system.
Background technology
3GPP has introduced high speed downlink packet access (HSDPA:High SpeedDownlink Packet Access) characteristic at the Release5 of 3G standard, and its purpose is to provide the downlink grouping traffic of higher rate, increases downlink capacity.Based on UMTS R4 framework, HSDPA is through introducing adaptive coding and modulating (AMC:Adaptive Modulation and Coding), mixing automatic repeat requests technology such as (HARQ:Hybrid AutomaticRetransmission Request) and achieve the above object.
Fundamentally, want to improve handling capacity on the air interface, need make full use of frequency spectrum resource, promptly improve the availability of frequency spectrum as much as possible.Owing to be limited by 3GPP existing network framework, the HSDPA system to the improvement of the availability of frequency spectrum need through link quick self-adapted with reduce two approach of network processes time delay and realize.
From the angle of link circuit self-adapting, the AMC technology is confirmed current channel capacity according to the situation (channel condition information CSI) of channel, confirms suitable code modulation mode etc. according to capacity, so that send information to greatest extent, realizes than higher speed; And to each user's variations, but AMC can both provide the Modulation and Coding Scheme of respective change, thereby has improved the transmission rate and the availability of frequency spectrum.Yet AMC can not guarantee to adapt to exactly link condition fully.Because the link change situation is very complicated, and pace of change is not quite similar, so AMC matees current link transient state according to measurement result to the not necessarily each portion of the adjustment of link code modulation mode fully.
The HARQ technology has just in time remedied the adaptive deficiency of AMC.HARQ is a kind of error correction method traditional ARQ (the automatic transmission requests of data, Automatic retransmission request) is technological and that forward error correction (FEC) technology combines.The sign indicating number that transmitting terminal sends not only can faults, but also has certain error correcting capability.After the receiving terminal reception information, if error situation in error correcting capability, then carries out error correction automatically, if exceeded the error correcting capability of error correcting code, but can detect, then receiving terminal feeds back to the corresponding signal of transmitting terminal, requires transmitting terminal to retransmit.HARQ shows that to the self adaptation of link it correctly is received as general objective with data, automatically according to link condition decision number of retransmissions.Not accurate enough like the AMC adjustment; For the first time transfer of data possibly have a large amount of error codes, and HARQ can automatic request retransmission, if link condition is still not so good when retransmitting; Comprehensive preceding twice transmission of receiving terminal still can not correctly be decoded; Then automatically request retransmits for the second time, till correct decoding (removing nonentity can not error correction, and system can be used as data-bag lost or transfer to high-rise the processing).Thereby in this sense, HARQ is a kind of technology of the link circuit self-adapting of " perfection " more, and it can well cooperate AMC to accomplish link circuit self-adapting in the HSDPA system.
Problem on the other hand is to reduce processing delay.In the system of 3GPP R4, data traffic transmission TTI (Transmission Time Interval, Transmission Time Interval) is 10ms at least; Business for big data quantity; Even possibility 80ms, data are very big in physical layer buffering time delay, and this is unfavorable for further raising data service rate.Thereby in HSDPA, TTI must reduce.Meanwhile, system resource and the control of link all realized at RRC (Radio Resource control) layer, and present RRC agreement all is to realize at radio network controller (RNC:Radio Network Controller).Signal propagation delay time between RNC and the terminal equipment can be very big, causes bigger control signal time delay, and this is extremely unfavorable for the rapid link self adaptation, and the reduction of control signal time delay is very necessary.3GPP TD-SCDMA R5 HSDPA has reduced the TTI of control signal transmission on the one hand, on the one hand resource control and scheduling feature has been moved on to Node B (Node B) by RNC in addition and has realized, thereby saved RNC to the processing delay between the NodeB.Particularly; The HSDPA aloft physical layer of interface introduces the transmission that several kinds of channels: HS-PDSCH (high-speed physical downlink shared channel (HS-PDSCH), High SpeedPhysical Downlink Shared Channel), HS-SCCH (High-Speed Shared Control Channel) and HS-SICH (high-speed shared information channel) accomplish high-speed data and control information respectively.MAC-hs (the high speed medium access control Medium Access Control forHSDPA) entity of introducing at MAC (medium access control) layer is accomplished relevant scheduling, multiplexing and controlled function etc.No matter air interface is data channel or control channel; The time interval TTI of its transmission is 5ms; Simultaneously; There is a lot of control scheduling features to transfer among the MAC-hs in the HSDPA system, and the MAC-hs entity of network side is placed on NodeB realizes that the signal processing of having removed between NodeB and the RNC postpones.
In a word, HSDPA promotes the air interface handling capacity through above-mentioned technological means greatly among the 3GPP R5.In theory, the descending peak traffic speed that provides up to 14.4Mbps of the single carrier frequency of FDD system (each 5MHz of up-downgoing), the descending peak rate that 2.8Mbps is provided of the single carrier frequency (1.6MHZ) of TD-SCDMA system.Though TD-SCDMA and FDD system are suitable basically on the availability of frequency spectrum; But the professional ability with regard to offering the user is said; At present both there is a big difference; In the current TD-SCDMA system, the user can the maximum traffic rate of acquisition be exactly 2.8Mbps, reason is that present TD-SCDMA system is that prerequisite makes up with UE (terminal) job note carrier frequency.
Along with the application of high-speed data service, the descending handling capacity that further promotes the TD-SCDMA system becomes very necessary.A kind of feasible method combines multicarrier and two kinds of technology of HSDPA exactly, thereby for the user business of better speed is provided.And still there is not the system and method for the HSDPA that can support multicarrier in the present prior art.
Summary of the invention
The technical problem that the present invention solves is to propose a kind of system and method that can support the HSDPA of multicarrier, and it is low to overcome in the prior art aerial interface handling capacity, the problem that the availability of frequency spectrum is not high.
In order to solve above-mentioned technical problem; The present invention proposes a kind of method that realizes that multi carrier wave high-speed downlink divide into groups to insert, and is applied to time division duplexing synchronous CDMA system, between transmitting terminal and the receiving terminal through a plurality of carrier transmission control informations and data message; The carrier wave shunting of data is carried out in the physical layer of transmitting terminal; The transmission data flow to being mapped in the physical layer channel Mapping process of carrier wave and accomplish, and each carrier wave carries out band spectrum modulation independently then, aerial transmission; Receiving terminal receives each carrier wave, in the physical channel inverse mapping, accomplishes the merging of data respectively after the demodulation despreading.
The shunting of carrier data can be adopted dual mode in the above-mentioned method: the one, and transmitting terminal adopts the mean allocation principle to want data quantity transmitted to distributing on each carrier wave; The control information of each carrier wave is identical; Shared these control informations of each carrier wave, described control information comprises the packet size and the modulation system of each carrier wave at least; The 2nd, transmitting terminal adopts non-mean allocation principle to want data quantity transmitted to distributing on each carrier wave, and promptly each carrier wave is confirmed data quantity transmitted size separately according to each self-metering channel condition.
The present invention also provides a kind of system that realizes that the multi carrier wave high-speed downlink grouping inserts, and comprises transmitting terminal, the channel between receiving terminal and the sending and receiving end; Comprise one group of data channel and control channel from sending to receive, comprise that from receiving to send one group of control channel is used for feedback information, is characterized in that; Transmitting terminal and receiving terminal are with multi-carrier mode work, and a user's data can be transmitted on a plurality of carrier waves simultaneously, comprises a high-speed downstream shared data channel on each carrier wave; A plurality of carrier waves are shared a control channel; The physical layer of transmitting terminal is accomplished the shunting of data, and each carrier wave independently carries out band spectrum modulation then, aerial transmission; Receiving terminal is accomplished each carrier wave and is independently received, and in the physical channel inverse mapping, accomplishes the merging of data after the demodulation despreading.
The present invention is based on 3GPP R5 framework provides and can realize physical layer shunting multi-carrier HSDPA system and method; Through expansion to carrier frequency resource; For the user of TD-SCDMA system provides up to N * 2.8M theoretical peak speed, improve the HSDPA downlink data transmission handling capacity of TD-SCDMA system greatly.
Description of drawings
Fig. 1 is the simplified diagram of multi-carrier HSDPA application system of the present invention
Fig. 2 is the layered structure sketch map of TD-SCDMA R5 HSDPA
Fig. 3 is TD-SCDMA R5 HSDPA HS-SCCH data field and coding sketch map thereof
Fig. 4 is TD-SCDMA R5 HSDPA HS-SICH data field and coding sketch map thereof
Fig. 5 is the TD-SCDMA multi-carrier HSDPA sketch map that physical layer multicarrier of the present invention is on average shunted
Fig. 6 is the HS-SCCH domain structure sketch map that physical layer multicarrier of the present invention is on average shunted HSDPA
Fig. 7 is the HS-SCCH domain structure signal of the non-average mark stream of physical layer multicarrier of the present invention HSDPA
Fig. 8 is the HS-SICH domain structure sketch map of the non-average mark stream of physical layer multicarrier of the present invention HSDPA
Fig. 9 is HS-SICH domain structure and the coding sketch map that physical layer multicarrier of the present invention is on average shunted HSDPA
Embodiment
Below in conjunction with accompanying drawing detailed description is made in concrete realization of the present invention.
Realize the system that the multi carrier wave high-speed downlink grouping inserts among the present invention, comprise transmitting terminal, the channel between receiving terminal and the sending and receiving end; Comprise one group of data channel and control channel from sending to receive, comprise that from receiving to send one group of control channel is used for feedback information, is characterized in that; Transmitting terminal and receiving terminal are with multi-carrier mode work, and a user's data can be transmitted on a plurality of carrier waves simultaneously, comprises a high-speed downstream shared data channel on each carrier wave; A plurality of carrier waves are shared a control channel; The physical layer of transmitting terminal is accomplished the shunting of data, and each carrier wave independently carries out band spectrum modulation then, aerial transmission; Receiving terminal is accomplished each carrier wave and is independently received, and in the physical channel inverse mapping, accomplishes the merging of data after the demodulation despreading.
As shown in Figure 1 is the sketch map of a multi-carrier HSDPA application system of relatively simplifying, and this is by 1 NodeB and two systems that the terminal is formed, and NodeB realizes the down high-speed data transmission through N carrier frequency and terminal 1,2 respectively.Wherein, from NodeB to the link of terminal down link, the terminal is a up link to the communication link of NodeB.
The TD-SCDMA system supports polytype business, like speech, packet.Business datum is to handle according to the mode of transmission channel, and a UE can comprise a plurality of transmission channels.These transmission channels are mapped to corresponding physical channel (being confirmed by channel code, time slot and carrier frequency etc.) again, accomplish transfer of data through air interface at last.
Packet is multiplexed into descending transmission channel one high speed descending sharing channel (HS-DSCH:High Speed Downlink Shared Channel) with the mode of burst, and transmission channel HS-DSCH is mapped to HS-PDSCH again.HS-PDSCH is that a plurality of users share with the mode that time-division or sign indicating number divide in the sub-district, and its Transmission Time Interval TTI is 5ms.HS-PDSCH carries user's data information, transmits through the HS-SCCH that follows and be used for the phase related control information that HS-PDSCH receives, and HS-SICH is used for the transmission of uplink feedback information.Therefore, these three kinds of physical channels are formed a physical layer closed loop, and they all are that TTI with 5ms is that unit handles and transmits.In addition, for the transmission of RRC signaling, 3GPP has also defined the accompanied by physical channel of up-downgoing in R5, is used to carry the relevant RRC signaling with HSDPA.
Fig. 2 is the closely-related two-layer simple protocol model of TD-SCDMA R5 air interface and HSDPA.Layer 1 is physical layer (phylayer), and layer 2 comprises RLC sublayer and media access control sublayer.The RLC sublayer guarantees the reliable transmission of Radio Link, mainly accomplishes ARQ.In the realization, RLC generally is positioned at RNC, because long time delay (comprising propagation delay time and processing delay) is arranged between RNC and the UE, so the general time delay of the ARQ of rlc layer is longer.Rlc layer and lower floor's data flow are logic channel.
MAC is respectively MAC-d (Medium Access Control fordedicated channel) and MAC-hs further for being decomposed into two sub-layer.MAC-d specifically accomplishes: logic channel is to the mapping of transmission channel, the multiplexing and encrypting and decrypting of logic channel etc.Data between MAC-d sublayer and the MAC-hs sublayer are transmitted with the MAC-dflow form, and each bar MAC-dflow is associated with certain scheduling attribute.MAC-hs accomplishes the scheduling of packet, HARQ etc., and the physical layer data interface is provided simultaneously.
Physical layer is specifically accomplished the reception of data and signaling and sent processing is coding/decoding, multiplex/demultiplex, modulating/demodulating and wireless transmission and reception etc.
Fig. 3 is TD-SCDMA R5 HSDPA HS-SCCH data field and coding sketch map thereof, in TD-SCDMA R5 HSDPA, is accompanied by the HS-DSCH transmission, and the control information relevant with HS-DSCH sent through control channel HS-SCCH.These control informations comprise: HARQ Process ID 6101, redundancy versions 6102, New Data Flag NDI 6103, HS-SCCH cyclic sequence HCSN 6104, UEID 6105, modulation system MF, transmission block size sign and physical channel resources.
Wherein HARQ Process ID indication is used to send the specific HARQ Process of packet.In the data transmission procedure of HSDPA; Each MAC-hs PDU (protocol Data Unit Protocol Date Unit) packet possibility transmission primaries perhaps repeatedly receives ACK information or abandons this packet because of overtime decision at HS-SICH up to the UTRAN side.This process that once or repeatedly retransmits is to stop to wait for that by the N channel agreement (N-Channel SAW) agreement accomplishes.Each MAC-hs PDU packet is associated with a specific HARQ process at transmitter side, and a HARQ Process is equivalent to one and stops to wait for the SAW protocol entity.Receiving terminal receives after this Process ID, also distributes a same HARQProcess, is used for the reception of MAC-hs PDU packet with the protocol entity of the equity of formation of transmitter side.If the data of the reception that receiving terminal is correct, then through up control channel HS-SICH feeding back ACK signal, the HARQ Process of transmitter side discharges.Otherwise, if fail correct the reception, the buffer memory soft data, and through HS-SICH feedback NAK response signal, transmitter side Process retransmits this packet.
It is new packet that NDI is used to indicate the MAC-hs PDU packet of transmission, but not retransmission packet.In order to improve systematic function; The HARQ that uses among HSDPA technology, receiving terminal do not abandon fails the transmits data packets of correct decoding, but buffer memory gets up and the packet that retransmits carries out soft merging; Merge later data and send to decoding again, thereby improve the possibility that retransmits the correct decoding in back.Different according to the mode that merges, produce different HARQ, mainly adopted two kinds of IR and CC in the TD-SCDMA R5 HSDPA system, be not described in detail at this.New Data Identification is new packet or retransmission data packet may to being used for notifying the UE data packets for transmission just, if be new packet, then the front data in buffer can full scale clearance.
Have certain timing relationship between HS-SCCH and the HS-DSCH, can guarantee receiving terminal after correctly receiving HS-SCCH, utilize control information wherein correctly to receive the HS-DSCH data.
Be HS-SICH with the corresponding up control channel of HS-SCCH, as shown in Figure 4.HS-SICH carries the feedback information of HS-DSCH, comprising: the correct transmission of the modulation system RMF 7101 of recommendation, the transmission block size RTBS 7102 that recommends and data is confirmation ACK/NAK 7201 whether.The AMC technology that the HSDPA system introduces, coding and the modulation system promptly confirmed adaptively according to the situation of down link.Be reflected in the TD-SCDMA system, receiving terminal is measured down link, confirms coding and modulation system according to the down link signal to noise ratio, and is converted into the transmission block size.Be sent to network terminal through HS-SICH.Network terminal according to circumstances can directly be utilized UE CQI (the channel quality indication Channel QualityIndicator) information that receives, and also can select else and select coding and modulation system, so the CQI that UE transmits is called recommendation information.Except CQI, ACK/NAK is used for the judgement whether HARQ retransmits.The same with HS-SCCH, HS-SICH also and relatively fixing timing relationship arranged between the HS-DSCH.
3GPP R5 TD-SCDMA HSDPA based on the network configuration of former R4, increases by three kinds of physical channel HS-PDSCH, HS-SCCH and HS-SICH through physical layer, and the MAC layer increases MAC-hs provides the HSDPA function jointly.In order further to improve the downlink grouped data transmission rate; The TD-SCDMA multi-carrier HSDPA need be introduced multi-transceiver technology on R5 HSDPA basis; Same user's downlink grouped data bag can be transmitted through a plurality of carrier waves, thereby higher service rate is provided.
Further introduce two embodiment of the present invention below in detail.
Transmitting terminal adopts the mean allocation principle to give to distribute on each carrier wave and wants data quantity transmitted in this programme, and the control information of each carrier wave is identical, and shared these control informations of each carrier wave, control information comprise packet size and the modulation system of each carrier wave etc. at least.
Fig. 5 is exactly the sketch map of present embodiment.Downlink data for the multi-carrier HSDPA UE of a certain support is handled through MAC-d, is sent to MAC-hs, under the control scheduling of MAC-hs, forms HS-DSCH packet and corresponding downstream control signaling information, is sent to physical layer.HS-DSCH transmission block size is by the overall condition decision of MAC-hs according to uplink feedback information and sub-district.
The multi-carrier HSDPA transmission channel is handled and is comprised CRC Attachment (CRC coding); Code Block Segmentation (code block is cut apart); Channel Coding (chnnel coding); Physical LayerHARQ Functionality (HARQ physical layer function); Bit Scrambling (bit scramble); HS-DSCHInterleaving (high speed descending sharing channel interweaves); Constellation Rearrangement for 16QAM and Physical Channel Mapping (16QAM constellation rearrangement and physical channel mapping).Except that wherein HS-DSCH Interleaving and Physical Channel Mapping, other processing capacity merchandiser carrier HSDPA is identical.
HS-DSCH Interleaving partly considers the characteristics of multicarrier, adds the one-level intercarrier in the front that interweaved originally and interweaves.Particularly, tentation data is transmitted on N carrier wave, and then input writes by row by the matrix of N * C, reads line by line again.Wherein C is the smallest positive integral that N * C is not less than HS-DSCH data bit number.And then each line data is carried out single carrier HS-DSCH Interleaving handle.
On the physical channel that Physical Channel Mapping provides data map in the MAC-hs descending control signaling information.At first accomplish the carrier wave mapping.Suppose to have N carrier wave, data are divided into isometric N section by the number of carrier wave,, then add filling bit ' 0 ' if data can not isometricly be cut apart.The corresponding carrier wave of every segment data.Accomplish the mapping of data on each carrier wave then, its mapping method and single carrier HSDPA are identical.After the Physical Channel Mapping, after band spectrum modulation, send.
Receiving terminal UE receives the data of each carrier wave, and each carrier wave separate processes is accomplished data demodulates, and the data of each carrier wave merge when the physical channel inverse mapping.
Control procedure and single carrier HSDPA mode are similar, the control channel of a physical layer are respectively arranged, i.e. HS-SCCH and HS-SICH in each HS-DSCH TTI of up-downlink direction.Specify that a descending HS-SCCH is actual to comprise two code channels, under the situation of not doing special statement, a HS-SCCH all refers to two code channels physically.
Down direction, MAC-hs provide relevant control information to physical layer, comprise modulation system, transmission block size, physical channel resources.
Descending control signaling information is combined into HS-SCCH in physical layer, and its data structure is than single carrier HSDPA, and is slightly different, referring to Fig. 6.As previously mentioned, the HS-SCCH in the multi-carrier HSDPA has increased the N bit and has been used to indicate current use carrier frequency situation (Fig. 6 supposes the N=6 carrier wave, and real system can be not limited to 6 carrier waves).For simplicity, in the multi-carrier HSDPA system, physical channel resources is distributed the identical time slot of use on each carrier wave, the channel code that each Time Slot Occupancy is identical.This also is the benefit of bringing of mean allocation data volume.The multi-carrier transmission block size expands in addition, and 6 bits of sign transmission block originally need to expand (among Fig. 6 be that example describe with 9 bits, actual 9 bits that are not limited to).
Up direction, HS-SICH are used to feed back CQI and ACK/NAK information.The same with up direction, the transmission block size among the CQI increases, so the bit wide of block size indication needs to increase.Fig. 9 has provided the information field of up feedback signal HS-SICH and relevant encoding characteristics, and wherein transmission block size sign is that example describes (being not limited to 9 bits) with 9 bits, and is corresponding therewith, originally the coded system (32,6) 1 of transmission block size
StOrder Reed-Muller code is revised as (32,10) 2
NdOrder Reed-Muller code.Detailed description is referring to TS25.222 4.3.3.1.
Article one, down control channel always is associated with an ascending control channel, claims that this uplink/downlink control channel is a pair of.Consider multiple users share, each user distributes four pairs of control channels among the TD-SCDMA R5 HSDPA, and the transmission of control information is only selected wherein a pair ofly among every TTI, but in continuous transmission situation, control channel remains unchanged.Therefore, except continuous transmission, UE must search for the decision control channel information.Under the multi-carrier HSDPA situation, this still keeps with mechanism.
The non-average mark stream of embodiment 2 physical layer multicarriers HSDPA
Transmitting terminal adopts non-mean allocation principle to want data quantity transmitted to distributing on each carrier wave in this programme, and promptly each carrier wave is confirmed data quantity transmitted size separately according to each self-metering channel condition.Data flow is after CRCAttachment, and each carrier wave is independently accomplished chnnel coding, interweaved and physical channel mapping and band spectrum modulation, and various piece processing mode merchandiser carrier HSDPA is identical.Receiving terminal, each carrier wave are independently accomplished demodulation despreading, decoding, accomplish the merging of a plurality of carrier waves then, carry out the verification of CRC later on.
The process that the physical layer of transmitting terminal is handled the multi carrier wave high-speed downlink grouped data comprises that the multi carrier wave high-speed downlink shared channel interweaves, and the data volume on N carrier wave is different, serial connection earlier when interweaving; Be divided into the identical N section of size again; Carry out N * C and interweave, serial connection is pressed each carrier data block size segmentation more then; The data block size that is assigned to each carrier wave before and after interweaving is identical, and wherein C is the smallest positive integral that N * C is not less than high speed descending sharing channel data bit number.
The control flows aspect must provide the control information of each carrier wave on the down control channel, comprise physical channel resources, the modulation system of use, the transmission block size, and RV (redundancy versions) etc. are referring to Fig. 7.
The CQI that ascending control channel also need feed back each carrier wave sees Fig. 8.
Control channel still is made up of a pair of up-downgoing, every user disposes four pairs at most, in the TTI, only selects the wherein a pair of control information transmission that is used for.Continuously transmission, control channel be to need not changing, thereby UE still continues to use last data control channel information, otherwise need search.
MAC-hs needs the feedback with reference to up each carrier parameter, consider actual available physical resource, but determines data block transmitted size on each carrier wave, and then merges to together, as the size of MAC-hs PDU intactly.MAC-hs uses this parameter to form MAC-hs PDU and dispatches.Simultaneously, MAC-hs notifies the physical channel resources of each carrier wave, modulation system, and the transmission block size, control informations such as RV notice physical layer is carried out control corresponding and is formed down control channel.
Use method and system of the present invention and realize that multi-carrier HSDPA allows a user's HSDPA downlink data on a plurality of carrier waves, to transmit simultaneously; Because the peak traffic speed of 2.8Mbps can be provided on the single carrier wave; Therefore under the multicarrier situation, can improve single user's service rate greatly.In theory, N carrier wave worked simultaneously and can be provided professional up to N*2.8Mbps for the user.With regard to the TD-SCDMA system, single carrier design frequency spectrum is 1.6M simultaneously, and spreading rate is 1.28MCPS.Because frequency range is narrow, it is fully possible that an operator distributes a plurality of resources of frequency range.Therefore say that from the angle of network design multi-carrier HSDPA also is feasible.
Claims (8)
1. a method that realizes that the multi carrier wave high-speed downlink grouping inserts is applied to time division duplexing synchronous CDMA system, it is characterized in that; Between transmitting terminal and the receiving terminal through a plurality of carrier transmission control informations and data message; The carrier wave shunting of data is carried out in the physical layer of transmitting terminal, and each carrier wave carries out band spectrum modulation independently then, aerial transmission; Receiving terminal receives each carrier wave, in the physical channel inverse mapping, accomplishes the merging of data respectively after the demodulation despreading; Wherein, the method for mapping and single carrier high speed downlink packet insert identical;
Wherein, When the carrier wave shunting of carrying out described data; The data that the physical layer of transmitting terminal adopts the mean allocation principle will to transmit for each allocation of carriers; The control information of each carrier wave is identical, shared these control informations of each carrier wave, and described control information comprises the packet size and the modulation system of each carrier wave at least; Or, when the carrier wave shunting of carrying out described data, the data that the physical layer of transmitting terminal adopts non-mean allocation principle will to transmit for each allocation of carriers, promptly each carrier wave is confirmed the size of data of transmission separately according to each self-metering channel condition.
2. as power 1 described method, it is characterized in that, when the physical layer of transmitting terminal adopts the mean allocation principle to give the data that each allocation of carriers will transmit; The physical layer of transmitting terminal is carried out data allocations and when mapping to each carrier wave, is on the physical channel that data map is provided in the Downlink Control Information of high speed medium access control layer, at first carries out the shunting of data; If N carrier wave arranged; Then data are divided into isometric N section by the number of carrier wave,, then add filling bit ' 0 ' if data can not isometricly be cut apart; The corresponding carrier wave of every segment data is accomplished the mapping of data on each carrier wave then.
3. like power 1 described method; It is characterized in that, when the physical layer of transmitting terminal adopts the mean allocation principle to give the data that each allocation of carriers will transmit, with the transmission data map of each carrier wave before the physical channel of this carrier wave; The process that the physical layer of transmitting terminal is handled the multi carrier wave high-speed downlink grouped data comprises that the multi carrier wave high-speed downlink shared channel interweaves; If data are transmitted on N carrier wave, then input writes by row by the matrix of N * C, reads line by line again; Then each line data is carried out single carrier high speed descending sharing channel interleaving treatment, wherein C is the smallest positive integral that N * C is not less than high speed descending sharing channel data bit number.
4. like power 1 described method; It is characterized in that; When the physical layer of transmitting terminal adopts the mean allocation principle to give the data that each allocation of carriers will transmit, also comprise upper and lower capable control procedure, before transfer of data, said transmission course is controlled respectively and sent the back feedback information in data; For descending control procedure: the high speed medium access control layer of transmitting terminal provides Downlink Control Information to physical layer; Comprise modulation system, transmission block size, physical channel resources; Downlink Control Information comprises that when physical layer is combined into High-Speed Shared Control Channel the N bit is used to indicate the current operating position of carrier frequency resource; N is a carrier number, expands the downlink transfer block size according to the multi-carrier transmission needs simultaneously, increases the bit wide of sign transmission block size indication; For the upload control process: use indication of high-speed shared information channel feedback channel quality and response message at the up direction receiving terminal, increase the bit wide that transmission block size and transmission block size in the channel quality indication are indicated according to the multi-carrier transmission needs.
5. like power 1 described method; It is characterized in that; When the physical layer of transmitting terminal adopts non-mean allocation principle to give the data that each allocation of carriers will transmit, also comprise upper and lower capable control procedure, before transfer of data, said transmission course is controlled respectively and sent the back feedback information in data; For descending control procedure: the high speed medium access control layer of transmitting terminal uses down control channel that the control information of each carrier wave is provided, and comprises physical channel resources, modulation system, transmission block size and the redundancy versions of use; For the upload control process: receiving terminal uses the channel quality indication of each carrier wave of ascending control channel feedback.
6. like power 1 described method; It is characterized in that; When the physical layer of transmitting terminal adopts non-mean allocation principle to give the data that each allocation of carriers will transmit; The described data that will transmit to each allocation of carriers specifically comprise: the high speed medium access control layer is according to the feedback and actual available physical resource of up each carrier parameter; But determine on each carrier wave the data block transmitted size, but and then with data block transmitted size on each carrier wave get with and as the parameter of high speed medium access control layer protocol Data Unit size, the high speed medium access control layer uses this parameter to form high speed medium access control layer protocol Data Unit and also dispatches.
7. as power 1 described method, it is characterized in that, when the physical layer of transmitting terminal adopts non-mean allocation principle to give the data that each allocation of carriers will transmit; Before the transmission data map with each carrier wave arrives the physical channel of this carrier wave; The process that the physical layer of transmitting terminal is handled the multi carrier wave high-speed downlink grouped data comprises that the multi carrier wave high-speed downlink shared channel interweaves, if the data volume on a plurality of carrier wave is different, is connected in series earlier when interweaving; Be divided into the identical N section of size again; Carry out N * C and interweave, serial connection is pressed each carrier data block size segmentation more then; The data block size that is assigned to each carrier wave before and after interweaving is identical, and wherein C is the smallest positive integral that N * C is not less than high speed descending sharing channel data bit number.
8. a system that realizes that the multi carrier wave high-speed downlink grouping inserts comprises transmitting terminal, the channel between receiving terminal and the sending and receiving end; Comprise one group of data channel and control channel from sending to receive, comprise one group of control channel that is used for feedback information, it is characterized in that from receiving to send; Through a plurality of carrier transmission control informations and data message, a user's data is transmitted on a plurality of carrier waves simultaneously, comprises a high-speed downstream shared data channel on each carrier wave between transmitting terminal and the receiving terminal; A plurality of carrier waves are shared a control channel; The physical layer of transmitting terminal is accomplished the shunting of data, and each carrier wave independently carries out band spectrum modulation then, aerial transmission; Receiving terminal is accomplished each carrier wave and is independently received, and in the physical channel inverse mapping, accomplishes the merging of data after the demodulation despreading; Wherein, the method for mapping and single carrier high speed downlink packet insert identical; Wherein, When the carrier wave shunting of carrying out described data; The data that the physical layer of transmitting terminal adopts the mean allocation principle will to transmit for each allocation of carriers; The control information of each carrier wave is identical, shared these control informations of each carrier wave, and described control information comprises the packet size and the modulation system of each carrier wave at least; Or, when the carrier wave shunting of carrying out described data, the data that the physical layer of transmitting terminal adopts non-mean allocation principle will to transmit for each allocation of carriers, promptly each carrier wave is confirmed the size of data of transmission separately according to each self-metering channel condition.
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