CN101174878A - Method and system for implementing mixed self-adapting retransmission - Google Patents
Method and system for implementing mixed self-adapting retransmission Download PDFInfo
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- CN101174878A CN101174878A CNA2006101142306A CN200610114230A CN101174878A CN 101174878 A CN101174878 A CN 101174878A CN A2006101142306 A CNA2006101142306 A CN A2006101142306A CN 200610114230 A CN200610114230 A CN 200610114230A CN 101174878 A CN101174878 A CN 101174878A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The present invention discloses a method and a system for realizing HARQ; the system comprises a base station and a user terminal which supports HSUPA. The method comprises that every user terminal which supports HSUPA is collocated with a special E-HICH; the base station implements the treatment of reducing the energy consumption and spreading frequency on the ACK/NACK information of the present user terminal; the base station issues the processed ACK/NACK information to the present user terminals through the special E-HICH. The present invention can implement the process of reducing the energy consumption on the ACK/NACK information of the user terminal which greatly reduces the energy consumption of the system and promotes the system function.
Description
Technical field
The present invention relates to up-high speed transfer of data (HSUPA) technology, particularly relate to a kind of mixed self-adapting of realizing and retransmit the method and system of (HARQ).
Background technology
Whole world system of land mobile communication system (UMTS TDD) is the system that a kind of HSUPA of utilization technology realizes transmitting uplink data.In order to ensure the correct reception of user data, in UMTS TDD system, adopted the HARQ technology in the HSUPA technology.And, in order to realize a complete ascending HARQ process easily, in UMTS TDD system, also defined independently physical channel, comprise and strengthen authorization channel (E-AGCH), strengthen uplink physical channel (E-PUCH) and strengthen mixing automatic request retransmission indicating channel (E-HICH), wherein, E-AGCH and E-HICH are shared physical channel.
Fig. 1 is a flow chart of realizing ascending HARQ in the prior art.Referring to Fig. 1, in the prior art, the basic implementation procedure of ascending HARQ comprises:
Step 101: at network side, physical channel is at first shared by E-AGCH in the base station will be handed down to each user terminal to the uplink scheduling reception indication information of different user terminals.
Step 102: physical channel is shared by E-AGCH in the base station will be handed down to each user terminal to the uplink scheduling information of different user terminals.
Step 103: each user terminal is monitored E-AGCH and is shared physical channel, receives indication information according to the uplink scheduling that issues at it, obtains the uplink scheduling information of base station for its distribution.
Step 104: user terminal is according to the uplink scheduling information that is obtained, and self upstream data is sent to the base station by the E-PUCH physical channel.
Step 105: if the base station has correctly received the upstream data that user terminal is sent, so, the base station will will correctly receive information (ACK) by the shared physical channel of E-HICH and be handed down to user terminal, user terminal then can be known this transmitting uplink data success, on the contrary, if the base station does not receive the upstream data that user terminal sends or receives wrong upstream data, so, the base station will receive information (NACK) with mistake by the shared physical channel of E-HICH and be handed down to user terminal, user terminal then can be known this transmitting uplink data failure, and user terminal then can retransmit this upstream data to the base station.
By process shown in Figure 1 as can be seen, in the implementation procedure of ascending HARQ, by the shared physical channel of E-HICH ACK/NACK being handed down to user terminal is a very important process.At present, the E-HICH channel is a shared physical channel, that is to say, the base station can be shared physical channel by this E-HICH and be issued ACK/NACK to different user terminals.
At present, when the base station is shared physical channel and issued ACK/NACK to different user terminals by E-HICH, adopted the multiplexing mode of E-HICH, that is to say, to a plurality of ACK/NACK of different user terminals be multiplexed on the identical spreading code, and then be handed down to each user terminal.Such as, a kind of implementation commonly used is: the scheme that physical channel adopts twice spread spectrum is shared to E-HICH in the base station, promptly an ACK/NACK symbol is spread to earlier on the long first order spreading code of 40 symbols, each first order spread-spectrum code chip is again by the ovsf code spread spectrum of SF=16 then, and such ACK/NACK symbol will be extended on 40 * 16=640 chip.
By above description as can be seen, in the prior art, because different user terminals sharing E-HICH shares physical channel, so, the base station is shared physical channel to E-HICH and has been adopted multiplexing structure, and promptly a plurality of ACK/NACK of different user terminals are multiplexed on the identical spreading code.Like this, owing to adopted multiplexing structure, therefore, it is power after a plurality of ACK/NACK stacks of different user terminals that E-HICH shares what exist on the physical channel, spread processing can only be carried out to the back ACK/NACK that superposes in the base station, and can't reduce the processing of power consumption, thereby causes E-HICH to share ACK/NACK a large amount of transmitting power of meeting consumption in a time slot that physical channel issues, such as, adopt multiplexing 4 ACK/NACK of OVSF spreading code will consume 90% power nearly.
As seen, when prior art is gone the HARQ process in realization, share the way that physical channel issues a plurality of ACK/NACK of different user terminals, can increase the power consumption of system greatly, thereby reduce the performance of system by E-HICH.
Summary of the invention
First purpose of the present invention is to provide the method for a kind of HARQ of realization, second purpose of the present invention is to provide the system of a kind of HARQ of realization, the 3rd purpose of the present invention is to provide a kind of base station, the 4th purpose of the present invention is to provide the user terminal of a kind of HSUPA of support, so that reduce the power consumption of system when going HARQ in realization greatly.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes that mixed self-adapting retransmits is supported the user terminal of up-high speed transfer of data HSUPA for each and is distributed special-purpose enhancing to mix automatic request retransmission indicating channel E-HICH, and this method also comprises:
A, base station reduce power consumption processing and spread processing to the non-affirmation nack message of affirmation ACK/ of active user's terminal of support HSUPA;
B, base station are handed down to described active user's terminal by the E-HICH channel of described active user's terminal-specific with the ACK/NACK information after the described processing.
Wherein, the described power consumption that reduces is handled and to be comprised:
The base station is carried out repeated encoding to the described ACK/NACK information before the spread processing and is handled according to being the pilot code of described active user's terminal distribution;
And/or the base station is carried out the power control and treatment according to being the pilot code of described active user's terminal distribution to the described ACK/NACK information after the spread processing;
And/or the base station is carried out beam shaping to the described ACK/NACK information after the spread processing and is handled according to being the pilot code of described active user's terminal distribution.
Wherein, the described power control and treatment of carrying out comprises: carry out open Loop Power control or carry out closed power control.
Preferably, before steps A, further comprise:
A10, base station will receive indication information and be sent to described active user's terminal corresponding to the uplink scheduling of described active user's terminal;
A20, base station send to described active user's terminal with uplink scheduling information, and described active user's terminal receives indication information according to uplink scheduling and receives uplink scheduling information;
A30, described active user's terminal are sent to base station by strengthening uplink physical channel E-PUCH with upstream data according to the uplink scheduling information that receives.
Preferably, the base station is in time-multiplexed mode, and the E-HICH Channel Transmission by described active user's terminal-specific is corresponding to the information related with uplink scheduling of described active user's terminal.
Wherein, the described information related with uplink scheduling comprises that uplink scheduling receives indication information;
Described steps A 10 comprises: the base station will receive indication information and be sent to described active user's terminal by the E-HICH channel of described active user's terminal-specific corresponding to the uplink scheduling of described active user's terminal.
Wherein, the described information related with uplink scheduling comprises the part uplink scheduling information;
In steps A 20, the base station is sent to described active user's terminal with the E-HICH channel of a part of uplink scheduling information by described active user's terminal-specific, and another part uplink scheduling information is sent to described active user's terminal by strengthening authorization channel E-AGCH;
In steps A 30, the uplink scheduling information of described active user's terminal institute basis is by at a part of uplink scheduling information that correctly receives on described active user's terminal-specific E-HICH channel with share another part uplink scheduling information combination that correctly receives on the physical channel at E-AGCH and obtain.
Alternatively, after correctly receiving described uplink scheduling information, further comprise: in current scheduling of resource in the cycle, described active user's terminal stops to monitor on described active user's terminal-specific E-HICH channel the sign indicating number section corresponding to the described part uplink scheduling information of transmission, and stops to monitor E-AGCH and share physical channel.
Preferably, in steps A 20, described base station comprises the step that uplink scheduling information sends to described active user's terminal: the base station repeats to be sent to described active user's terminal by a plurality of subframes with uplink scheduling information.
Wherein, in steps A 20, described reception uplink scheduling information comprises:
Described active user's terminal receives indication information according to uplink scheduling, receive the current subframe in described a plurality of subframe, whether the uplink scheduling information that judgement receives on current subframe is correct, if, then will this correct uplink scheduling information as the uplink scheduling information that receives, execution in step A30, otherwise, abandon the uplink scheduling information that receives on the current subframe, continue to receive the next subframe in described a plurality of subframes, after receiving correct uplink scheduling information, execution in step A30.
Wherein, in steps A 20, described reception uplink scheduling information comprises:
Described active user's terminal receives indication information according to uplink scheduling, receive the current subframe in described a plurality of subframe, the uplink scheduling information that will receive on current subframe and the uplink scheduling information of preservation merge, judge whether the uplink scheduling information after merging is correct, if, uplink scheduling information after then will merging is as the uplink scheduling information that receives, execution in step A30, otherwise, utilize the uplink scheduling information after the current merging to upgrade the uplink scheduling information of being preserved, return the step of carrying out the current subframe in a plurality of subframes of described reception, after receiving correct uplink scheduling information, execution in step A30.
A kind of system that realizes that mixed self-adapting retransmits comprises:
The base station, be used to each to support the user terminal of HSUPA to distribute the E-HICH channel of this user terminal special use, generation is to the ACK/NACK information of the user terminal of support HSUPA, this ACK/NACK information is reduced power consumption to be handled and spread processing, by this E-HICH channel of supporting the user terminal special use of HSUPA, the ACK/NACK information after the described processing is handed down to the user terminal of this support HSUPA;
Support the user terminal of HSUPA, be used to monitor its special-purpose E-HICH channel, receive ACK/NACK information.
Wherein, described base station comprises:
The E-HICH channel is realized the unit, is used to each user terminal of supporting HSUPA to distribute special-purpose E-HICH channel, passes through the special-purpose E-HICH channel of user terminal that distributed, the ACK/NACK information that receives is handed down to the user terminal of supporting HSUPA;
Information generating unit is used to generate the ACK/NACK information to the user terminal of supporting HSUPA, exports the ACK/NACK information that is generated to information process unit;
Information process unit is used for that the ACK/NACK information that receives is reduced power consumption and handles and spread processing, exports the ACK/NACK information after handling to the E-HICH channel and realizes the unit.
Wherein, the user terminal of described support HSUPA comprises:
E-HICH channel in the user terminal is realized the unit, is used to monitor the E-HICH channel of described user terminal special use, receives ACK/NACK information, exports received ACK/NACK information to information process unit;
Information process unit in the user terminal is used for the ACK/NACK information that receives is carried out dissection process.
A kind of base station, described base station comprises:
The E-HICH channel is realized the unit, is used to each user terminal of supporting HSUPA to distribute special-purpose E-HICH channel, passes through the E-HICH channel of the user terminal special use that distributed, the ACK/NACK information that receives is handed down to the user terminal of supporting HSUPA;
Information generating unit is used to generate the ACK/NACK information to the user terminal of supporting HSUPA, exports the ACK/NACK information that is generated to information process unit;
Information process unit is used for that the ACK/NACK information that receives is reduced power consumption and handles and spread processing, exports the ACK/NACK information after handling to the E-HICH channel and realizes the unit.
Preferably, described information generating unit further generates uplink scheduling and receives indication information, this uplink scheduling is received indication information export E-HICH channel realization unit to;
The E-HICH channel realizes that the unit further passes through the E-HICH channel of the user terminal special use that distributed, receives indication information with the uplink scheduling that receives and is handed down to the user terminal of supporting HSUPA.
Preferably, described base station further comprises: the E-AGCH channel is realized the unit,
Wherein, described information generating unit further generates uplink scheduling information, exports a part of uplink scheduling information to the E-HICH channel and realizes the unit, exports another part uplink scheduling information to the E-AGCH channel and realizes the unit;
The E-AGCH channel realizes that the unit is used to each user terminal of supporting HSUPA to distribute E-AGCH to share physical channel, and described another part uplink scheduling information that will receive by the shared physical channel of this E-AGCH is sent to the user terminal of supporting HSUPA;
The E-HICH channel realizes that the unit further passes through the E-HICH channel of the user terminal special use that distributed, is handed down to the described part uplink scheduling information that receives the user terminal of supporting HSUPA.
A kind of user terminal of supporting HSUPA, the user terminal of this support HSUPA comprises:
The E-HICH channel is realized the unit, is used to monitor the E-HICH channel of described user terminal special use, receives ACK/NACK information, exports received ACK/NACK information to information process unit;
Information process unit is used for the ACK/NACK information that receives is carried out dissection process.
Preferably, described E-HICH channel is realized the further special-purpose E-HICH channel of being set up of monitoring in unit, receives uplink scheduling and receives indication information, the uplink scheduling that receives is received indication information export information process unit to;
Information process unit further receives indication information to the uplink scheduling that receives and carries out dissection process.
Preferably, the user terminal of described support HSUPA further comprises: the E-AGCH channel is realized the unit,
Wherein, the E-HICH channel is realized the further special-purpose E-HICH channel of the described user terminal of monitoring of unit, receives the part uplink scheduling information that send the base station, exports the described part uplink scheduling information that receives to information process unit;
The E-AGCH channel realizes that the unit is used to monitor E-AGCH and shares physical channel, receives the part uplink scheduling information that send the base station, exports the described part uplink scheduling information that receives to information process unit;
Information process unit further utilizes the E-HICH channel to realize the uplink scheduling information of unit output and the uplink scheduling information that the E-AGCH channel is realized unit output, obtains complete uplink scheduling information.
This shows that the present invention has the following advantages:
1, in the present invention, support the user terminal of HSUPA all to distribute special-purpose E-HICH channel at each, like this, when the base station issues ACK/NACK at the user terminal at a support HSUPA, then need not to carry out multiplexing and stack with the ACK/NACK of other user terminals, only need to reduce the power consumption processing at the ACK/NACK of this user terminal, and the ACK/NACK that the E-HICH channel by this user terminal special use issues after this processing gets final product, therefore, greatly reduce the power consumption of system, improved the performance of system.
2, in the present invention, owing to consider when issuing uplink scheduling reception indication information, uplink scheduling information and ACK/NACK information, it is the sequencing on the life period, therefore, the present invention before the E-HICH channel by the user terminal special use sends ACK/NACK information, utilize this free time, the special-purpose E-HICH channel of user terminal sends the information related with uplink scheduling, such as, uplink scheduling receives indication information and part uplink scheduling information, thereby has saved code channel resource.
Description of drawings
To make clearer above-mentioned and other feature and advantage of the present invention of those of ordinary skill in the art by describe exemplary embodiment of the present invention in detail with reference to accompanying drawing below, in the accompanying drawing:
Fig. 1 is a flow chart of realizing ascending HARQ in the prior art;
Fig. 2 is the structural representation of system of the present invention;
Fig. 3 is the structural representation of inside of base station in the present invention;
Fig. 4 is a structural representation of supporting the user terminal inside of HSUPA in the present invention;
Fig. 5 is a flow chart of realizing ascending HARQ in embodiments of the present invention;
Fig. 6 is that the E-HICH channel and the E-AGCH of user terminal special use in embodiments of the present invention shares the multiplexing structural representation of physical channel;
Fig. 7 is the coding structure schematic diagram of the E-HICH channel of user terminal special use in embodiments of the present invention.
Embodiment
The present invention proposes a kind of method that realizes that mixed self-adapting retransmits.In the method, support the user terminal of HSUPA for each and distribute special-purpose E-HICH channel; The base station reduces power consumption processing and spread processing to the ACK/NACK information of active user's terminal of support HSUPA; The base station is handed down to described active user's terminal by the E-HICH channel of described active user's terminal-specific with the ACK/NACK information after the described processing.
Correspondingly, the invention allows for a kind of system that realizes that mixed self-adapting retransmits.Fig. 2 is the structural representation of system of the present invention.Referring to Fig. 2, system proposed by the invention mainly comprises: the user terminal of base station and support HSUPA, wherein, the base station, be used to each to support the user terminal of HSUPA to distribute the E-HICH channel of this user terminal special use, generation is to the ACK/NACK information of the user terminal of support HSUPA, this ACK/NACK information is reduced power consumption to be handled and spread processing, by this E-HICH channel of supporting the user terminal special use of HSUPA, the ACK/NACK information after the described processing is handed down to the user terminal of this support HSUPA; Support the user terminal of HSUPA, be used to monitor its special-purpose E-HICH channel, receive ACK/NACK information.
Fig. 3 is the structural representation of inside of base station in the present invention.Referring to Fig. 3, in the present invention, the basic structure of inside of base station can comprise: the E-HICH channel is realized unit 301, information generating unit 302 and information process unit 303, wherein,
The E-HICH channel realizes that unit 301 is used to each user terminal of supporting HSUPA to distribute special-purpose E-HICH channel, passes through the E-HICH channel of the user terminal special use that distributed, the ACK/NACK information that receives is handed down to the user terminal of supporting HSUPA;
Fig. 4 is a structural representation of supporting the user terminal inside of HSUPA in the present invention.Referring to Fig. 4, in the present invention, support the basic structure of the user terminal inside of HSUPA to comprise: the E-HICH channel is realized unit 401 and information process unit 402, wherein,
The E-HICH channel realizes that unit 401 is used to monitor the E-HICH channel of described user terminal special use, receives ACK/NACK information, exports received ACK/NACK information to information process unit 402;
This shows, in the present invention,, and the ACK/NACK information that issues has been carried out the reduction power consumption handled, therefore, can reduce the power consumption of system for the user terminal of supporting HSUPA has distributed special-purpose E-HICH channel.
In addition, whole ascending HARQ process is analyzed as can be known, a uplink scheduling of supporting the user terminal of HSUPA is handed down in the base station, and to receive indication information, uplink scheduling information and ACK/NACK information be sequencing on the life period.Like this, if still according to the way of prior art, send ACK/NACK information by the E-HICH channel, and by E-AGCH channel transmission uplink scheduling reception indication information and uplink scheduling information, so, before the E-HICH channel by the user terminal special use sends ACK/NACK information, this special-purpose E-HICH channel then can occur and be in idle condition, and the shared physical channel of E-AGCH needs to issue a large amount of uplink schedulings reception indication informations and uplink scheduling information, cause taking the situation of too much E-AGCH code channel, thereby caused the unnecessary waste of code channel resource.
This shortcoming at prior art, the inventive method and system can further realize a kind of with the E-HICH/E-AGCH Merge Scenarios, that is to say, before the E-HICH channel of the user terminal special use of passing through support HSUPA sends ACK/NACK information, utilize this script idle, the special-purpose E-HICH channel of user terminal sends the information related with uplink scheduling, such as, the uplink scheduling that utilizes the special-purpose E-HICH channel of user terminal to send corresponding to this user terminal receives indication information and part uplink scheduling information.Correspondingly, at this moment, in base station of the present invention shown in Figure 3, can further include the E-AGCH channel and realize unit 304, in user terminal of the present invention shown in Figure 4, can further include the E-AGCH channel and realize unit 403.
Fig. 5 is a flow chart of realizing ascending HARQ in embodiments of the present invention.Referring to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, be designated as between the user terminal 1 with user terminal at a base station and a support HSUPA, realize that the ascending HARQ process is an example, the base station and the user terminal that utilize system of the present invention and the present invention to propose, embodiment of the invention method realizes that the process of this ascending HARQ specifically may further comprise the steps:
Step 501: the base station is supported the user terminal of HSUPA for each in advance and is distributed the E-HICH channel of a special use.
Here, in the prior art, share physical channel owing to support the different user terminals of HSUPA to share an E-HICH, therefore, for a plurality of ACK/NACK after the stack, can't reduce the processing of power consumption to a plurality of ACK/NACK in back that superpose according to its shared pilot code Midamble.In order to address this problem, in embodiments of the present invention, at first distribute the E-HICH channel of a special use for each user terminal of supporting HSUPA by this step 501, thereby make the ACK/NACK that in subsequent process, can issue a user terminal, and can reduce the processing of power consumption to this ACK/NACK according to its special-purpose pilot code Midamble by this special-purpose E-HICH channel.
In addition, the process of this step specifically can be carried out realization by the realization of the E-HICH channel in the base station shown in Figure 3 unit 301, that is to say that the E-HICH channel realizes that unit 301 distributes the E-HICH channel of this user terminal special use for the user terminal of each support HSUPA.
Step 502: when a scheduling of resource cycle begins, the base station will receive indication information and be handed down to user terminal 1 by the special-purpose E-HICH channel of user terminal 1 corresponding to the uplink scheduling of user terminal 1.
Here, described uplink scheduling reception indication information comprises: E-AGCH sends indication (E-AGCHoccurrence indicator) and E-AGCH shares code channel indication (E-AGCH code channelindicator).
Need to prove, in this step, owing to also do not finish transmitting uplink data between base station and the user terminal 1, therefore, the base station can not that is to say that current the special-purpose E-HICH channel of user terminal 1 is in idle condition at this moment for user terminal 1 issues ACK/NACK information.Like this, in order to utilize code channel resource better, referring to Fig. 6 and Fig. 7, in this step, the base station is not adopted in the prior art and is shared the way that physical channel sends uplink scheduling reception indication information by E-AGCH, but the special-purpose E-HICH channel by user terminal 1 will receive indication information and be handed down to user terminal 1 corresponding to the uplink scheduling of user terminal 1.
In addition, in the prior art,, therefore, issuing the sign that to carry user terminal 1 when uplink scheduling receives indication information owing to share the uplink scheduling reception indication information that physical channel sends user terminal 1 by E-AGCH.And in this step, issue uplink scheduling and receive indication information because the base station is a special-purpose E-HICH channel by user terminal 1, therefore, issue the sign that need not to carry user terminal 1 when uplink scheduling receives indication information, thereby further saved code source.
In addition, the process of this step specifically can realize that unit 301 and information generating unit 302 realize jointly by the E-HICH channel in the base station shown in Figure 3.That is to say that information generating unit 302 generates uplink scheduling and receives indication information, this uplink scheduling is received indication information export E-HICH channel realization unit 301 to; The E-HICH channel is realized the E-HICH channel of unit 301 by user terminal 1 special use, the uplink scheduling that receives is received indication information be handed down to user terminal 1.
Step 503: user terminal 1 is monitored and is the special-purpose E-HICH channel of its distribution, receives uplink scheduling and receive indication information on this special use E-HICH channel.
The process of this step specifically can be realized jointly by realization unit 401 of the E-HICH channel in the user terminal shown in Figure 4 and information process unit 402.That is to say that the E-HICH channel is realized unit 401, the E-HICH channel of monitoring users terminal 1 special use receives uplink scheduling and receives indication information, received uplink scheduling is received indication information export information process unit 402 to; The uplink scheduling that 402 pairs of information process units receive receives indication information and carries out dissection process, thereby determine to share the moment that physical channel occurs at E-AGCH according to E-AGCH transmission indication (E-AGCH occurrence indicator) wherein, and determine that according to the shared code channel indication of E-AGCH (E-AGCH code channel indicator) E-AGCH of required monitoring shares physical channel corresponding to the uplink scheduling information of self.
Step 504: the base station will be sent to user terminal 1 corresponding to the uplink scheduling information of user terminal 1 by the E-HICH channel and the shared physical channel of E-AGCH of user terminal 1 special use.
Here, comprise the various information that indicating user terminal 1 sends upstream data that are used in the described uplink scheduling information, comprising: PRRI (5 bit), power resource indication; CRRI (5 bit), the indication of sign indicating number resource; TRRI (5 bit), the time interval resource indication; RDI (3 bit), resource continuous time indication; CRC (16 bit).In this step, can adopt 3G UMTS channel coding schemes-convolutional encoding commonly used, to this altogether 18 information bits add 16 CRC bits and encode, bit behind the coding is mapped on 132 physical channel bit through spread spectrum and modulation, these 132 physical channel bit need account for 2 SF=16 channel code 3/4, E-AGCH part1 promptly shown in Figure 6, E-AGCH part2 and E-AGCH part3.This kind encoding scheme can obtain about 1/4 code rate.
Need to prove, in this step, owing to also do not finish transmitting uplink data between base station and the user terminal 1, therefore, the base station can not that is to say that current the special-purpose E-HICH channel of user terminal 1 is in idle condition at this moment for user terminal 1 issues ACK/NACK information.Like this, in order to utilize code source better, referring to Fig. 6, in this step, the base station is not adopted and is passed through the only way of the shared physical channel transmission of E-AGCH uplink scheduling information in the prior art, but the special-purpose E-HICH channel of multiplexing user terminal 1 and E-AGCH share physical channel, promptly, to be handed down to user terminal 1 corresponding to a part of uplink scheduling information (the E-AGCH part1 shown in Fig. 6) of user terminal 1 special-purpose E-HICH channel by user terminal 1, and will share physical channel by E-AGCH corresponding to another part uplink scheduling information (E-AGCH part2 shown in Fig. 6 and E-AGCH part3) of user terminal 1 and be handed down to user terminal 1.
In addition, the process of this step specifically can be realized jointly by the realization of the E-HICH channel in the base station shown in Figure 3 unit 301, information generating unit 302 and E-AGCH channel realization unit 304.That is to say, the uplink scheduling information that information generating unit 302 generates corresponding to user terminal 1, will be wherein a part of uplink scheduling receives indication information and exports the E-HICH channel to and realize unit 301, and wherein another part uplink scheduling receives indication information and exports the E-AGCH channel to and realize unit 304; The E-HICH channel is realized the E-HICH channel of unit 301 by user terminal 1 special use, and the described part uplink scheduling information that receives is handed down to user terminal 1; The E-AGCH channel realizes that unit 304 by the shared physical channel of E-AGCH, is handed down to user terminal 1 with the described part uplink scheduling information that receives.
Step 505: user terminal 1 receives indication information according to the uplink scheduling that receives, monitor and be the special-purpose E-HICH channel of its distribution and the shared physical channel of E-AGCH, utilization obtains complete uplink scheduling information from special-purpose E-HICH channel uplink scheduling information that receives and the uplink scheduling information that receives from the shared physical channel of E-AGCH.
Here, referring to Fig. 6, user terminal 1 will obtain complete uplink scheduling information from its special-purpose E-HICH channel uplink scheduling information (E-AGCH part1) that receives and the uplink scheduling information (E-AGCH part2 and E-AGCH part3) that receives from the shared physical channel of E-AGCH after the combination.
User terminal need to prove, owing to only after correctly having received uplink scheduling information, could be carried out the process of follow-up transmission upstream data.Therefore, in order further to guarantee to realize follow-up transmitting uplink data, in the present embodiment, the base station can be in a plurality of subframes of current scheduling of resource in the cycle, E-HICH channel and E-AGCH by user terminal 1 special use share physical channel, will repeat to be sent to user terminal 1 corresponding to the uplink scheduling information of user terminal 1.Like this, in this step, after user terminal 1 obtains complete uplink scheduling information, can adopt following dual mode to handle:
Mode one, user terminal 1 have obtained complete uplink scheduling information in current subframe after, can judge at first whether this uplink scheduling information that receives is correct on current subframe, if, then will this correct uplink scheduling information as the uplink scheduling information that receives, continue to carry out subsequent step 506, otherwise, abandon the uplink scheduling information that receives on the current subframe, continue to receive the next subframe in described a plurality of subframes, after receiving correct uplink scheduling information, continue to carry out subsequent step 506.
Mode two, user terminal 1 receives the current subframe in described a plurality of subframe successively, the uplink scheduling information that will receive on current subframe and the uplink scheduling information of preservation merge, judge whether the uplink scheduling information after merging is correct, if, uplink scheduling information after then will merging is as the uplink scheduling information that receives, continue to carry out subsequent step 506, otherwise, utilize the uplink scheduling information after the current merging to upgrade the uplink scheduling information of being preserved, return the current subframe carried out in a plurality of subframes of described reception and the processing of described judgement, after receiving correct uplink scheduling information, continue to carry out subsequent step 506.
As can be seen, aforesaid way two is that the uplink scheduling information that will repeatedly repeat to send comprehensively obtains final uplink scheduling information, this kind processing mode comprehensively the base station according to the difference uplink scheduling information that constantly channel condition issued, therefore, can guarantee further that upstream data that user terminal 1 is sent satisfies the composite request of channel.
In addition, the process of this step can be realized jointly by each functional unit in the user terminal shown in Figure 4.That is to say, in user terminal 1, the E-HICH channel is realized the special-purpose E-HICH channel of unit 401 monitoring users terminals 1, receive the described part uplink scheduling information (the E-AGCH part1 shown in Fig. 6) that send the base station, export the uplink scheduling information that receives to information process unit 402; The E-AGCH channel realizes that unit 403 monitoring E-AGCH share physical channel, receive the described part uplink scheduling information (E-AGCH part2 shown in Fig. 6 and E-AGCH part3) that send the base station, export the described part uplink scheduling information that receives to information process unit 402; Information process unit 402 utilizes the E-HICH channel to realize the uplink scheduling information of unit 401 outputs and the uplink scheduling information that the E-AGCH channel is realized unit 403 outputs, obtains complete uplink scheduling information.
Step 506: user terminal 1 is sent to base station by the E-PUCH channel with upstream data according to the uplink scheduling information that finally obtains.
Here, the process of this step specifically can be realized jointly by information process unit in the user terminal shown in Figure 4 402 and E-PUCH channel realization unit 404.That is to say that in user terminal 1, the uplink scheduling information that information process unit 402 will finally obtain exports the E-PUCH channel to and realizes unit 404; The E-PUCH channel realizes that unit 404 is sent to the base station by the E-PUCH channel with the upstream data of user terminal 1.
Step 507: the base station basis to the reception condition of user terminal 1 upstream data, generates the ACK/NACK information to user terminal 1 in the E-PUCH channel.
Here, if the base station has correctly received the upstream data that user terminal 1 is sent, so, what the base station generated is ACK information, on the contrary, if the base station does not receive the upstream data that user terminal 1 sends or receives wrong upstream data, what so, the base station generated is nack message.
In addition, the process of this step specifically can be realized by the information generating unit in the base station shown in Figure 3 302.That is to say, in the base station, information generating unit 302 according in the E-PUCH channel to the reception condition of user terminal 1 upstream data, generate ACK/NACK information to user terminal 1, and information generating unit 302 can export the ACK/NACK information that is generated to information process unit 303.
Step 508: the base station reduces power consumption to the ACK/NACK information that is generated and handles and spread processing.
Here, compared with prior art,, handle, therefore, can increase the power consumption of system and can't reduce power consumption owing to can only carry out spread processing to a plurality of ACK/NACK information after the stack in the prior art.On the contrary, in this step,, therefore, can reduce power consumption and handle because ACK/NACK information need not to superpose with the ACK/NACK information of other user terminals.
And in this step, the reduction power consumption of being carried out is handled and can be comprised: the base station is carried out repeated encoding to the described ACK/NACK information before the spread processing and is handled according to being the pilot code of active user's terminal distribution; And/or the base station is carried out the power control and treatment according to being the pilot code of active user's terminal distribution to the described ACK/NACK information after the spread processing, such as, carry out open Loop Power control or carry out closed power control etc.; And/or the base station is carried out beam shaping to the described ACK/NACK information after the spread processing and is handled according to being the pilot code of active user's terminal distribution.Because the specific implementation of described repeated encoding processing procedure, power control and treatment process and beam shaping processing procedure is existing mature technology, so, no longer describe in this step.
In addition, the process of this step specifically can be realized by the information process unit in the base station shown in Figure 3 303.That is to say that in the base station, the ACK/NACK information of 303 pairs of information generating unit of information process unit, 302 outputs reduces power consumption and handles and spread processing.
Step 509: the base station is handed down to user terminal 1 by the E-HICH channel of user terminal 1 special use with the ACK/NACK information after the described processing.
The process of this step specifically can be realized jointly by realization unit 301 of the E-HICH channel in the base station shown in Figure 3 and information process unit 303.That is to say that in the base station, the ACK/NACK information after information process unit 303 will be handled exports the E-HICH channel to and realizes unit 301; The E-HICH channel realizes that unit 301 is handed down to user terminal 1 with the ACK/NACK information that receives.
After this, user terminal 1 can know then according to the ACK/NACK information that receives whether this transmitting uplink data is successful.
Referring to Fig. 6 in above-mentioned process shown in Figure 5, can utilize the OVSF spreading code of the SF=16 of a special use to carry information (E-AGCHoccurrence indicator and E-AGCH code channel indicator, perhaps E-AGCH part1) and the ACK/NACK that the uplink scheduling in the special-purpose E-HICH channel is associated.And, can utilize the OVSF spreading code of a shared SF=16 to carry E-AGCH and share uplink scheduling information (E-AGCH part2 and E-AGCHpart3) in the physical channel.
In addition, referring to Fig. 6, in above-mentioned process shown in Figure 5, to E-AGCH occurrence indicator and the E-AGCH code channel indicator that sends by special-purpose E-HICH channel, 22 times repeated encoding can respectively be adopted in the base station, also can adopt other coded system, the 44 bit physical channel bit that obtain are mapped to the first half of E-HICH channel through spread spectrum and modulation, as shown in Figure 7, and, the ACK/NACK bit that sends by special-purpose E-HICH channel is adopted the scheme of 40 times of repeated encodings, the physical channel bit that obtains 40 bits is mapped in the ACK/NACK field through spread spectrum and modulation, as shown in Figure 7, send by special-purpose E-HICH channel then.
In above-mentioned process shown in Figure 5, in the cycle, user terminal 1 can monitor its special-purpose E-HICH channel all the time and E-AGCH shares physical channel a scheduling of resource, thereby realizes receiving uplink scheduling information.Perhaps, preferably, in order to reduce the power consumption of user terminal 1, after determining correctly to have received uplink scheduling information, in current scheduling of resource in the cycle, user terminal 1 can stop to monitor on its special-purpose E-HICH channel corresponding to the sign indicating number section of transmitting described uplink scheduling information, and stop to monitor E-AGCH and share physical channel, after the next scheduling of resource cycle begins, continue again to monitor on its special-purpose E-HICH channel and share physical channel corresponding to the sign indicating number section and the E-AGCH that transmit described uplink scheduling information.
Need to prove, in above-mentioned process shown in Figure 5, be receiving indication information, and sharing physical channel by special-purpose E-HICH channel and E-AGCH, to transmit uplink scheduling information jointly be example, comes the ascending HARQ process is described in detail by special-purpose E-HICH Channel Transmission uplink scheduling.In practical business of the present invention is realized, if do not consider code channel resource, also can be according to the processing mode of prior art, that is, uplink scheduling receives indication information and uplink scheduling information is all shared the user terminal that physical channel sends to support HSUPA by E-AGCH.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. a method that realizes that mixed self-adapting retransmits is characterized in that, supports the user terminal of up-high speed transfer of data HSUPA for each and distributes special-purpose enhancing to mix automatic request retransmission indicating channel E-HICH, and this method also comprises:
A, base station reduce power consumption processing and spread processing to the non-affirmation nack message of affirmation ACK/ of active user's terminal of support HSUPA;
B, base station are handed down to described active user's terminal by the E-HICH channel of described active user's terminal-specific with the ACK/NACK information after the described processing.
2. method according to claim 1 is characterized in that, the described power consumption that reduces is handled and to be comprised:
The base station is carried out repeated encoding to the described ACK/NACK information before the spread processing and is handled according to being the pilot code of described active user's terminal distribution;
And/or the base station is carried out the power control and treatment according to being the pilot code of described active user's terminal distribution to the described ACK/NACK information after the spread processing;
And/or the base station is carried out beam shaping to the described ACK/NACK information after the spread processing and is handled according to being the pilot code of described active user's terminal distribution.
3. method according to claim 2 is characterized in that, the described power control and treatment of carrying out comprises: carry out open Loop Power control or carry out closed power control.
4. method according to claim 1 is characterized in that, before steps A, further comprises:
A10, base station will receive indication information and be sent to described active user's terminal corresponding to the uplink scheduling of described active user's terminal;
A20, base station send to described active user's terminal with uplink scheduling information, and described active user's terminal receives indication information according to uplink scheduling and receives uplink scheduling information;
A30, described active user's terminal are sent to base station by strengthening uplink physical channel E-PUCH with upstream data according to the uplink scheduling information that receives.
5. method according to claim 4 is characterized in that, the base station is in time-multiplexed mode, and the E-HICH Channel Transmission by described active user's terminal-specific is corresponding to the information related with uplink scheduling of described active user's terminal.
6. method according to claim 5 is characterized in that, the described information related with uplink scheduling comprises that uplink scheduling receives indication information;
Described steps A 10 comprises: the base station will receive indication information and be sent to described active user's terminal by the E-HICH channel of described active user's terminal-specific corresponding to the uplink scheduling of described active user's terminal.
7. method according to claim 5 is characterized in that, the described information related with uplink scheduling comprises the part uplink scheduling information;
In steps A 20, the base station is sent to described active user's terminal with the E-HICH channel of a part of uplink scheduling information by described active user's terminal-specific, and another part uplink scheduling information is sent to described active user's terminal by strengthening authorization channel E-AGCH;
In steps A 30, the uplink scheduling information of described active user's terminal institute basis is by at a part of uplink scheduling information that correctly receives on described active user's terminal-specific E-HICH channel with share another part uplink scheduling information combination that correctly receives on the physical channel at E-AGCH and obtain.
8. method according to claim 7, it is characterized in that, after correctly receiving described uplink scheduling information, further comprise: in current scheduling of resource in the cycle, described active user's terminal stops to monitor on described active user's terminal-specific E-HICH channel the sign indicating number section corresponding to the described part uplink scheduling information of transmission, and stops to monitor E-AGCH and share physical channel.
9. according to claim 4 or 5 described methods, it is characterized in that, in steps A 20, described base station comprises the step that uplink scheduling information sends to described active user's terminal: the base station repeats to be sent to described active user's terminal by a plurality of subframes with uplink scheduling information.
10. method according to claim 9 is characterized in that, in steps A 20, described reception uplink scheduling information comprises:
Described active user's terminal receives indication information according to uplink scheduling, receive the current subframe in described a plurality of subframe, whether the uplink scheduling information that judgement receives on current subframe is correct, if, then will this correct uplink scheduling information as the uplink scheduling information that receives, execution in step A30, otherwise, abandon the uplink scheduling information that receives on the current subframe, continue to receive the next subframe in described a plurality of subframes, after receiving correct uplink scheduling information, execution in step A30.
11. method according to claim 9 is characterized in that, in steps A 20, described reception uplink scheduling information comprises:
Described active user's terminal receives indication information according to uplink scheduling, receive the current subframe in described a plurality of subframe, the uplink scheduling information that will receive on current subframe and the uplink scheduling information of preservation merge, judge whether the uplink scheduling information after merging is correct, if, uplink scheduling information after then will merging is as the uplink scheduling information that receives, execution in step A30, otherwise, utilize the uplink scheduling information after the current merging to upgrade the uplink scheduling information of being preserved, return the step of carrying out the current subframe in a plurality of subframes of described reception, after receiving correct uplink scheduling information, execution in step A30.
12. a system that realizes that mixed self-adapting retransmits is characterized in that, comprising:
The base station, be used to each to support the user terminal of HSUPA to distribute the E-HICH channel of this user terminal special use, generation is to the ACK/NACK information of the user terminal of support HSUPA, this ACK/NACK information is reduced power consumption to be handled and spread processing, by this E-HICH channel of supporting the user terminal special use of HSUPA, the ACK/NACK information after the described processing is handed down to the user terminal of this support HSUPA;
Support the user terminal of HSUPA to be used to monitor its special-purpose E-HICH channel, receive ACK/NACK information.
13. system according to claim 12 is characterized in that, described base station comprises:
The E-HICH channel is realized the unit, is used to each user terminal of supporting HSUPA to distribute special-purpose E-HICH channel, passes through the special-purpose E-HICH channel of user terminal that distributed, the ACK/NACK information that receives is handed down to the user terminal of supporting HSUPA;
Information generating unit is used to generate the ACK/NACK information to the user terminal of supporting HSUPA, exports the ACK/NACK information that is generated to information process unit;
Information process unit is used for that the ACK/NACK information that receives is reduced power consumption and handles and spread processing, exports the ACK/NACK information after handling to the E-HICH channel and realizes the unit.
14. system according to claim 12 is characterized in that, the user terminal of described support HSUPA comprises:
E-HICH channel in the user terminal is realized the unit, is used to monitor the E-HICH channel of described user terminal special use, receives ACK/NACK information, exports received ACK/NACK information to information process unit;
Information process unit in the user terminal is used for the ACK/NACK information that receives is carried out dissection process.
15. a base station is characterized in that, described base station comprises:
The E-HICH channel is realized the unit, is used to each user terminal of supporting HSUPA to distribute special-purpose E-HICH channel, passes through the E-HICH channel of the user terminal special use that distributed, the ACK/NACK information that receives is handed down to the user terminal of supporting HSUPA;
Information generating unit is used to generate the ACK/NACK information to the user terminal of supporting HSUPA, exports the ACK/NACK information that is generated to information process unit;
Information process unit is used for that the ACK/NACK information that receives is reduced power consumption and handles and spread processing, exports the ACK/NACK information after handling to the E-HICH channel and realizes the unit.
16. base station according to claim 15 is characterized in that, described information generating unit further generates uplink scheduling and receives indication information, this uplink scheduling is received indication information export E-HICH channel realization unit to;
The E-HICH channel realizes that the unit further passes through the E-HICH channel of the user terminal special use that distributed, receives indication information with the uplink scheduling that receives and is handed down to the user terminal of supporting HSUPA.
17. according to claim 15 or 16 described base stations, it is characterized in that described base station further comprises: the E-AGCH channel is realized the unit,
Wherein, described information generating unit further generates uplink scheduling information, exports a part of uplink scheduling information to the E-HICH channel and realizes the unit, exports another part uplink scheduling information to the E-AGCH channel and realizes the unit;
The E-AGCH channel realizes that the unit is used to each user terminal of supporting HSUPA to distribute E-AGCH to share physical channel, and described another part uplink scheduling information that will receive by the shared physical channel of this E-AGCH is sent to the user terminal of supporting HSUPA;
The E-HICH channel realizes that the unit further passes through the E-HICH channel of the user terminal special use that distributed, is handed down to the described part uplink scheduling information that receives the user terminal of supporting HSUPA.
18. a user terminal of supporting HSUPA is characterized in that, the user terminal of this support HSUPA comprises:
The E-HICH channel is realized the unit, is used to monitor the E-HICH channel of described user terminal special use, receives ACK/NACK information, exports received ACK/NACK information to information process unit;
Information process unit is used for the ACK/NACK information that receives is carried out dissection process.
19. user terminal according to claim 18, it is characterized in that, described E-HICH channel is realized the further special-purpose E-HICH channel of being set up of monitoring in unit, receives uplink scheduling and receives indication information, the uplink scheduling that receives is received indication information export information process unit to;
Information process unit further receives indication information to the uplink scheduling that receives and carries out dissection process.
20., it is characterized in that the user terminal of described support HSUPA further comprises: the E-AGCH channel is realized the unit according to claim 18 or 19 described user terminals,
Wherein, the E-HICH channel is realized the further special-purpose E-HICH channel of the described user terminal of monitoring of unit, receives the part uplink scheduling information that send the base station, exports the described part uplink scheduling information that receives to information process unit;
The E-AGCH channel realizes that the unit is used to monitor E-AGCH and shares physical channel, receives the part uplink scheduling information that send the base station, exports the described part uplink scheduling information that receives to information process unit;
Information process unit further utilizes the E-HICH channel to realize the uplink scheduling information of unit output and the uplink scheduling information that the E-AGCH channel is realized unit output, obtains complete uplink scheduling information.
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Inventor after: Shen Dongdong Inventor after: Wang Haoran Inventor after: Song Aihui Inventor after: Li Rong Inventor before: Shen Dongdong Inventor before: Wang Haoran Inventor before: Song Aihui Inventor before: Li Rong |