CN1917411A - 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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- CN1917411A CN1917411A CNA2005100918705A CN200510091870A CN1917411A CN 1917411 A CN1917411 A CN 1917411A CN A2005100918705 A CNA2005100918705 A CN A2005100918705A CN 200510091870 A CN200510091870 A CN 200510091870A CN 1917411 A CN1917411 A CN 1917411A
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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 by 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 needs quick self-adapted and reduce two approach of network processes time delay and realize by link to the improvement of the availability of frequency spectrum.
From the angle of link circuit self-adapting, the AMC technology is determined current channel capacity according to the situation (channel condition information CSI) of channel, determines suitable code modulation mode etc. according to capacity, so that send information to greatest extent, realizes than higher speed; And at 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 mates current link transient state according to measurement result fully to the not necessarily each portion of the adjustment of link code modulation mode.
The HARQ technology has just in time remedied the adaptive deficiency of AMC.HARQ is a kind of error correction method that traditional ARQ (data are transmitted request automatically, Automatic retransmission request) technology and forward error correction (FEC) technology are combined.The sign indicating number that transmitting terminal sends not only can detect mistake, 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.Adjust not accurate enough as AMC, transfer of data may have a large amount of error codes for the first time, the automatic request retransmission of HARQ meeting, if link condition is still not so good when retransmitting, comprehensive preceding twice transmission of receiving terminal still can not be correctly decoded, then automatically request retransmits for the second time, till being correctly decoded (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 finish 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 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) finish 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 finished 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, the signal processing of having removed between NodeB and the RNC postpones.
In a word, HSDPA promotes the air interface handling capacity by 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 substantially on the availability of frequency spectrum, but say with regard to the professional ability that offers the user, 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 the business of better speed is provided for the user.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 the multi carrier wave high-speed downlink grouping inserts, be applied to time division duplexing synchronous CDMA system, between transmitting terminal and the receiving terminal by 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 finish, each carrier wave carries out band spectrum modulation independently then, aerial transmission, receiving terminal receives each carrier wave, finishes the merging of data respectively after the demodulation despreading in the physical channel inverse mapping.
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 determined 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, comprise transmitting terminal, 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, it is characterized in that, transmitting terminal and receiving terminal are with multi-carrier mode work, a user's data can be transmitted on a plurality of carrier waves simultaneously, comprise 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 finished the shunting of data, and each carrier wave independently carries out band spectrum modulation then, aerial transmission, receiving terminal is finished each carrier wave and is independently received, and finishes the merging of data after the demodulation despreading in the physical channel inverse mapping.
The present invention is based on 3GPP R5 framework provides and can realize physical layer shunting multi-carrier HSDPA system and method, by 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 schematic diagram of TD-SCDMA R5 HSDPA
Fig. 3 is TD-SCDMA R5 HSDPA HS-SCCH data field and coding schematic diagram thereof
Fig. 4 is TD-SCDMA R5 HSDPA HS-SICH data field and coding schematic diagram thereof
Fig. 5 is the TD-SCDMA multi-carrier HSDPA schematic diagram that physical layer multicarrier of the present invention is on average shunted
Fig. 6 is the HS-SCCH domain structure schematic diagram 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 schematic diagram 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 schematic diagram that physical layer multicarrier of the present invention is on average shunted HSDPA
Embodiment
Below in conjunction with accompanying drawing specific implementation of the present invention is made a detailed description.
Realize the system that the multi carrier wave high-speed downlink grouping inserts among the present invention, comprise transmitting terminal, 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, it is characterized in that, transmitting terminal and receiving terminal are with multi-carrier mode work, a user's data can be transmitted on a plurality of carrier waves simultaneously, comprise 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 finished the shunting of data, and each carrier wave independently carries out band spectrum modulation then, aerial transmission, receiving terminal is finished each carrier wave and is independently received, and finishes the merging of data after the demodulation despreading in the physical channel inverse mapping.
Be the schematic diagram of a multi-carrier HSDPA application system of relatively simplifying as shown in Figure 1, this is by 1 NodeB and two systems that terminal is formed, and NodeB realizes the down high-speed data transmission by N carrier frequency and terminal 1,2 respectively.Wherein, from NodeB to the link of terminal down link, terminal is a up link to the communication link of NodeB.
The TD-SCDMA system supports polytype business, as 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 determined by channel code, time slot and carrier frequency etc.) again, finish transfer of data by air interface at last.
Packet is multiplexed into descending transmission channel one high speed descending sharing channel (HS-DSCH:High Speed Downlink Shared Channel) in the mode of burst, and transmission channel HS-DSCH is mapped to HS-PDSCH again.HS-PDSCH is that a plurality of users share in the mode that time-division or sign indicating number divide in the sub-district, and its Transmission Time Interval TTI is 5ms.HS-PDSCH carrying user's data information is transmitted by 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 finishes 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 sublayers.MAC-d specifically finishes: 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 finishes the scheduling of packet, HARQ etc., and the physical layer data interface is provided simultaneously.
Physical layer is specifically finished 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 schematic diagram thereof, in TD-SCDMA R5 HSDPA, is accompanied by the HS-DSCH transmission, and the control information relevant with HS-DSCH sends by 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 may transmission primaries or repeatedly, receives ACK information or because overtime decision abandons this packet up to the UTRAN side at HS-SICH.This process that once or repeatedly retransmits is to stop to wait for that by the N channel agreement (N-Channel SAW) agreement finishes.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 by 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 by 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 technology of using among the HSDPA, receiving terminal does not abandon the transmits data packets of failing to be correctly decoded, 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 is correctly decoded after the re-transmission.Mode difference according to merging produces different HARQ, has mainly adopted two kinds of IR and CC in the TD-SCDMA R5 HSDPA system, is 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.
With the corresponding up control channel of HS-SCCH be HS-SICH, as shown in Figure 4.The feedback information of HS-SICH carrying HS-DSCH comprises: 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, i.e. coding and the modulation system of determining adaptively according to the situation of down link.Be reflected in the TD-SCDMA system, receiving terminal is measured down link, determines 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 by 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 by 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 by a plurality of carrier waves, thereby higher service rate is provided.
Be described in further detail two embodiment of the present invention below.
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 the packet size of each carrier wave and modulation system etc. at least.
Fig. 5 is exactly the schematic diagram 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 (cyclic redundancy check (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 finish 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.Finish 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 finished 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, 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 of transmission block size (32,6) 1
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 determined data quantity transmitted size separately according to each self-metering channel condition.Data flow is after CRCAttachment, and each carrier wave is independently finished 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 is independently finished demodulation despreading, decoding, finishes the merging of a plurality of carrier waves then, carries 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, data volume difference on N carrier wave, be 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.
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 needs to feed back each carrier wave sees Fig. 8.
Control channel still is made 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, considers actual available physical resource, but determines data block transmitted size on each carrier wave, and then be merged 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 to transmit simultaneously on a plurality of carrier waves, 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 the business 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 from the angle of network design, multi-carrier HSDPA also is feasible.
Claims (10)
1. method that realizes that multi carrier wave high-speed downlink grouping inserts, be applied to time division duplexing synchronous CDMA system, it is characterized in that, between transmitting terminal and the receiving terminal by 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 finish, each carrier wave carries out band spectrum modulation independently then, aerial transmission, receiving terminal receives each carrier wave, finishes the merging of data respectively after the demodulation despreading in the physical channel inverse mapping.
2. as power 1 described method, it is characterized in that, when the carrier wave shunting of carrying out described data, 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.
3. as power 2 described methods, it is characterized in that, it is on the physical channel that data map is provided in the descending control signaling information of high speed medium access control layer that the physical layer of described transmitting terminal is carried out the physical channel mapping process to the multi carrier wave high-speed downlink grouped data, at first carry out the shunting of data, if N carrier wave arranged, then data are divided into isometric N section by the number of carrier wave, if data can not isometricly be cut apart, then add filling bit ' 0 ', the corresponding carrier wave of every segment data is finished the mapping of data on each carrier wave then.
4. as power 2 described methods, it is characterized in that, the process that the physical layer of described 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, data are transmitted on N carrier wave, then input writes by row by the matrix of N * C, read line by line, 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.
5. as power 2 described methods, it is characterized in that, the control procedure that also comprises up-downgoing: the high speed medium access control layer of transmitting terminal provides relevant control information to physical layer, comprise modulation system, the transmission block size, physical channel resources, descending control signaling information increases the N bit and is used to indicate current use carrier frequency situation when physical layer is combined into High-Speed Shared Control Channel, N is a carrier number, expand the downlink transfer block size according to the multi-carrier transmission needs simultaneously, increase the bit wide of sign transmission block size indication, use indication of high-speed shared information channel feedback channel quality and response message at the up direction receiving terminal, according to the bit wide of transmission block size in the indication of multi-carrier transmission needs increase channel quality and the indication of transmission block size.
6. as power 1 described method, it is characterized in that, when the carrier wave shunting of carrying out described data, transmitting terminal adopts non-mean allocation principle to want data quantity transmitted to distributing on each carrier wave, and promptly each carrier wave is determined data quantity transmitted size separately according to each self-metering channel condition.
7. as power 6 described methods, it is characterized in that, the control procedure that also comprises up-downgoing: the high speed medium access control layer of transmitting terminal uses down control channel that the control information of each carrier wave is provided, the physical channel resources, the modulation system that comprise use, the transmission block size, redundancy versions, receiving terminal use ascending control channel to feed back the channel quality indication of each carrier wave.
8. as power 7 described methods, it is characterized in that, described give to distribute on each carrier wave want data quantity transmitted specifically to comprise: the high speed medium access control layer is according to the feedback and the available physical resource of reality of up each carrier parameter, but determine data block transmitted size on each carrier wave, and then being merged together size as a complete high speed medium access control layer protocol Data Unit, the high speed medium access control layer uses this parameter to form high speed medium access control layer protocol Data Unit and dispatches.
9. as power 6 described methods, it is characterized in that, the process that the physical layer of described 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, data volume difference on N carrier wave, be connected in series earlier when interweaving, be divided into the identical N section of size again, carrying out N * C interweaves, be connected in series then, again by each carrier data block size segmentation, 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.
10. the right to use 1 a described method realizes the system that the multi carrier wave high-speed downlink grouping inserts, comprise transmitting terminal, 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, it is characterized in that, transmitting terminal and receiving terminal are with multi-carrier mode work, a user's data can be transmitted on a plurality of carrier waves simultaneously, comprise 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 finished the shunting of data, and each carrier wave independently carries out band spectrum modulation then, aerial transmission, receiving terminal is finished each carrier wave and is independently received, and finishes the merging of data after the demodulation despreading in the physical channel inverse mapping.
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| CN2005100918705A Expired - Fee Related CN1917411B (en) | 2005-08-16 | 2005-08-16 | System and method for realization of accessing high speed down going packets in multiple carriers |
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| CN101631007B (en) * | 2008-07-14 | 2013-06-05 | 电信科学技术研究院 | Method, device and system for transmitting data |
| CN103404101A (en) * | 2012-12-31 | 2013-11-20 | 华为技术有限公司 | Decoding method and device |
| WO2017024528A1 (en) * | 2015-08-11 | 2017-02-16 | 华为技术有限公司 | Method for transmitting feedback information, user equipment and access device |
| WO2017113356A1 (en) * | 2015-12-31 | 2017-07-06 | 华为技术有限公司 | Data transmission method, device, and system |
| CN108353301A (en) * | 2015-11-04 | 2018-07-31 | 株式会社Ntt都科摩 | User terminal, wireless base station and wireless communications method |
| US10257846B2 (en) | 2014-03-10 | 2019-04-09 | Huawei Technologies Co., Ltd. | Data transmission method and communications device |
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