CN101645763A - Dispatching method and uplink dispatching system for uplink data transmission - Google Patents
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Abstract
The invention provides a dispatching method and an uplink dispatching system for uplink data transmission. The method comprises the following steps that: a base station transmits uplink authenticationinformation to a terminal, when redundant version information RV carried in the uplink authentication information is zero, a modulation coding scheme MCS is also carried in the uplink authenticationinformation; and the terminal receives the uplink authentication information transmitted by the base station, and keeps on reading the MCS when the read RV is zero. The method and the system ensure that when the base station performs first transmission or retransmission, the uplink authentication information has a chance to carry the MCS information to enable the terminal to acquire the correct MCS for uplink data transmission, and combines the prior fundamental scheme that the RV equals to zero during the first transmission in the scheme to ensure successful combination after data retransmission.
Description
Technical field
The present invention relates to a kind of dispatching method and uplink dispatching system that upstream data sends that be used for, refer more particularly in the wireless communication system a kind of in the upstream data process of transmitting method and the uplink dispatching system of uplink scheduling.
Background technology
In wireless communication system, scheduling is the process that network based certain criterion is adjusted each terminal data speed.Uplink scheduling is meant on up link, the base station can be by special PDCCH (the Physical Downlink ControlChannel that belongs to the Radio Network Temporary Identifier scrambling of terminal on each Transmission Time Interval, Physical Downlink Control Channel abbreviates PDCCH as) be the terminal distribution resource.When terminal can be carried out the down link reception, in order to obtain distributing to the uplink transmission resource of this terminal, terminal need monitor PDCCH always.
For the PDCCH of uplink allocation resource is called uplink grant (UL grant) again, the base station sends uplink grant information distribution uplink resource by it.Comprise Physical Resource Block and Modulation and Coding Scheme (MCS in the uplink grant information, Modulation and coding scheme, Modulation and Coding Scheme, hereinafter to be referred as MCS), redundancy version information RV of incremental redundancy (Redundancy Version) and NDI (New data indicator, new data indication is hereinafter to be referred as NDI) etc. information, indicate the resource of distributing to terminal by these information.
Wherein: MCS is with the modulation system of designation data and coded system;
RV decodes after the data that will repeatedly transmit of receiver merge, and comprises redundancy and systematic bits in the data retransmission simultaneously, the redundancy versions identification in can the redundancy scheme of self-demarking code.In use, available RV has a set, and for example { 0,2,3,1,0,2,3,1,0......} increases redundancy versions successively.For a certain bag data, the first redundancy versions that uses RV=0 that passes, each of back time re-transmission uses 2,3,1,0,2,3,1 successively, the redundancy versions of 0...... order;
NDI is used to distinguish new data and data retransmission.When passing new data, NDI is added 1, constant during data retransmission.NDI has only 1 bit, so have only 2 values: 0 and 1.When transmitting the first bag new data, NDI is 0; When transmitting the second bag new data, NDI is 1; When transmitting the three guarantees new data, NDI is 0.So come to add up 1 successively.And NDI is constant during data retransmission, just: when the first bag new data when retransmitting, the data retransmission of the first bag new data just, no matter be to retransmit for the first time or retransmit for the second time or which inferior re-transmission, NDI is constant, and is the same with the first bag new data, all is 0; When the second bag new data retransmitted again, just no matter the data retransmission of the second bag new data was to retransmit the first time or retransmit for the second time or which time re-transmission, and NDI is constant, and is the same with the second bag new data, is 1; When the three guarantees new data retransmitted again, no matter the data retransmission of the new data of three guarantees just was to retransmit for the first time or retransmit for the second time or which inferior re-transmission, and NDI is constant, and is the same with the three guarantees new data, is 0.So keep NDI constant.
Note new data and the first difference that passes data, data retransmission herein:
A) new data is meant the data of new original contents.The original contents difference of carrying between the different new datas, the original contents difference of carrying between for example above-mentioned first bag new data and the second bag new data;
B) transmission of new data is called the first data that pass when sending for the first time; Send for the second time and be called data retransmission during later transmission.First biography data are consistent with the original contents that data retransmission carries.For example above-mentioned, be called the first data that pass the first time of the first bag new data when sending; Be called data retransmission the second time of the first bag new data when sending; First biography data are consistent with the original contents that data retransmission carries, and are the original contents of the first bag new data.
Transfer of data on the up link is the method for synchronization, adopts uplink authorization to dispatch to the transmission first of upstream data, and its re-transmission can be a self adaptation, and is also can right and wrong adaptive.When carrying out the self adaptation re-transmission, the base station need reschedule (but not comprising MCS information) with the up link authorization message, and the resource that comprises in the uplink grant information covers previous scheduling resource, and later retransmission will adopt newly assigned resource.When carrying out the non-self-adapting re-transmission, the resource of primary distribution is carried out uplink before adopting, and does not have uplink grant information to indicate.
So, realize, following point will occur for above-mentioned existing principle and technology:
For adaptive mode, as shown in Figure 1:
Benchmark NDI is 0, has new data to send, and is 1 so NDI adds 1.Pass headed by the new data, so RV is 0.Issue in the 1st the uplink grant information of terminal in the base station, comprise the MCS mode that this new data sends, Physical Resource Block, and NDI is set is 1, RV is 0.If but this uplink grant information dropout, terminal does not receive this 1st uplink grant information, terminal does not send anything on ascending resource so, and the base station is then detected less than anything on ascending resource, initiates the 2nd uplink grant information subsequently.Because be to retransmit, so in the 2nd uplink grant information, comprising: NDI still is 1, RV is according to { 0,2,3,1,0,2,3,1, the 0......} order increases to 2, and the Physical Resource Block of corresponding the 2nd upstream data transmission, but does not have MCS information.Terminal receives this 2nd uplink grant information, and when upstream data sent, (MCS had in the 1st mandate, but loses in the 1st mandate owing to lack MCS information; Do not have MCS information in the 2nd mandate), terminal will not know this new data with which MCS mode sends, and cause terminal not send this new data or send with certain wrong MCS mode.Equally, the base station is still detected less than anything on ascending resource, perhaps detects wrong thing, initiates the 3rd uplink grant information subsequently.Because be to retransmit, so in the 3rd uplink grant information, comprising: NDI still is 1, RV is according to { 0,2,3,1,0,2,3,1, the 0......} order increases to 3, and the Physical Resource Block of corresponding the 3rd upstream data transmission, but does not have MCS information.Afterwards, continue to retransmit uplink grant information, wherein NDI is constant, and MCS information is not carried in the RV setting that circulates all the time.Because disappearance MCS information, terminal does not know still this new data with which MCS mode sends, and causes terminal not send this new data or sends with certain MCS mode of mistake.
For the non-self-adapting mode, as shown in Figure 2:
Benchmark NDI is 0, has new data to send, and is 1 so NDI adds 1.Pass headed by the new data, so RV is 0.Issue in the 1st the uplink grant information of terminal in the base station, comprise the MCS mode that this new data sends, Physical Resource Block, and NDI is set is 1, RV is 0.If but this uplink grant information dropout, terminal does not receive this 1st uplink grant information, terminal does not send anything on ascending resource so, and the base station is then detected less than anything on ascending resource, initiates the 2nd uplink grant information subsequently.Because be to retransmit, in the 2nd uplink grant information, comprising: NDI still is 1, RV is according to { 0,2,3,1,0,2,3,1, the 0......} order increases to 2, and the Physical Resource Block of corresponding the 2nd upstream data transmission, but does not have MCS information.Terminal receives this 2nd uplink grant information, and when upstream data sent, (MCS had in the 1st mandate, but loses in the 1st mandate owing to lack MCS information; Do not have MCS information in the 2nd mandate), terminal will not know this new data with which MCS mode sends, and cause terminal not send this new data or send with certain wrong MCS mode.Afterwards, continue to retransmit uplink grant information, wherein NDI is constant, and MCS information is not carried in the RV setting that circulates all the time.Owing to adopt non-self-adapting to retransmit mode, the resource of primary distribution is carried out uplink before utilizing, so there is not correct uplink grant information to indicate subsequently, just means that also all upstream datas subsequently send, and do not know all which MCS this uses.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of dispatching method and uplink dispatching system that upstream data sends that be used for, make when head passes or retransmit, uplink grant information can both have an opportunity to carry MCS information, guarantees that terminal obtains correct MCS and carries out the upstream data transmission.
In order to address the above problem, the invention provides a kind of dispatching method that upstream data sends that is used for, the base station sends uplink grant information to terminal, the redundancy version information RV that carries in uplink grant information is 0 o'clock, also carries Modulation and Coding Scheme MCS in this uplink grant information; Described terminal receives the uplink grant information that described base station sends, and reads wherein that RV is at 0 o'clock, then continues to read MCS.
Further, described base station is first to be passed data or data retransmission is used as new data carries out head when passing transmission, and the new data indication information NDI that carries in the uplink grant information adds 1, and RV is set to 0, carries MCS in this uplink grant information.
Further, during the data retransmission of base station, NDI is constant, by default value set circulation RV is set, and when RV is set to 0, carries MCS in this uplink grant information.
Further, also carry promising this upstream data in the described uplink grant information and send the physical resource that distributes, described terminal is carried out the transmission of upstream data according to described MCS on described physical resource.
In order to address the above problem, the present invention also provides a kind of uplink dispatching system, comprising: base station and terminal, wherein, described base station is used to send uplink grant information to terminal, in uplink grant information, dispose RV, when RV is 0, also in this uplink grant information, dispose MCS; Described terminal is used to receive the uplink grant information that described base station sends, and reads RV wherein, continues to read described MCS when RV is 0.
Further, described base station first pass data or data retransmission is used as new data carries out head when passing transmission, RV is set in the uplink grant information is 0 and NDI added 1, and carry MCS in this uplink grant information.
Further, described base station when detecting data retransmission, is provided with in the uplink grant information RV and keeps NDI constant by default value set circulation, when RV is set to 0, carries MCS in this uplink grant information.
Further, described base station is carried promising this upstream data and is sent the physical resource that distributes in the described uplink grant information of transmission; Described terminal is carried out the transmission of upstream data on described physical resource according to described MCS.
Compared with prior art, the invention enables the base station when carrying out the head biography or retransmitting, uplink grant information can both have an opportunity to carry MCS information, guarantee that terminal obtains correct MCS and carries out the upstream data transmission, and RV equals 0 base case and is incorporated among the present invention program during with existing first the biography, guarantees the merging success after the data re-transmission.
Description of drawings
Fig. 1 is the schematic diagram that the existing uplink grant information process of adaptive mode goes wrong;
Fig. 2 is the schematic diagram that the existing uplink grant information process of non-adaptive mode goes wrong;
Fig. 3 is the enforcement schematic diagram when head passes in the embodiment of the invention;
Fig. 4 is the enforcement schematic diagram when retransmitting in the embodiment of the invention;
Fig. 5 is the enforcement schematic diagram when adaptive mode in the embodiment of the invention;
Fig. 6 is the enforcement schematic diagram when the non-self-adapting mode in the embodiment of the invention;
Fig. 7 is a system handles schematic diagram in the embodiment of the invention;
Fig. 8 is a system configuration schematic diagram in the embodiment of the invention.
Embodiment
The present invention is in order to solve the drawback that conventional solution exists, further set forth a kind of dispatching method and uplink dispatching system that upstream data sends that be used for of the present invention by following specific embodiment, below embodiment is described in detail, but not as a limitation of the invention.
Core thinking of the present invention is: in uplink grant, when RV equals 0, must carry MCS information.
Wherein: RV is 02 kinds of situations that first biography arranged and retransmit:
● RV is 0 during first the biography, and NDI adds 1
● RV is 0 during re-transmission, and NDI is constant.
As shown in Figure 3, the enforcement schematic diagram when head passes in the embodiment of the invention.
Benchmark NDI is 0, has new data to send, and is 1 so NDI adds 1.Pass headed by the new data, so RV is 0.Issue in the 1st the uplink grant information of terminal in the base station, comprise a MCS mode that this new data sends and be 5, Physical Resource Block and NDI is set is 1, RV is 0.
If but this uplink grant information dropout, terminal does not receive this 1st uplink grant information, terminal does not send anything on ascending resource so, and the base station is then detected less than anything on ascending resource, initiates the 2nd uplink grant information subsequently.In the 2nd uplink grant information, it is used as first biography of new data sends, it is 0 that NDI adds 1, RV is 0.This moment, RV was 0 o'clock, must carry effective MCS information according to rule, so in the 2nd uplink grant information, carrying MCS information is 4, and just a MCS mode of this new data transmission is 4, also carries the Physical Resource Block corresponding to the 2nd upstream data transmission.
Terminal receives the 2nd uplink grant information, and obtaining MCS information is 4.Subsequently, terminal is 4 mode with MCS on the uplink resource (Physical Resource Block) of appointment, and the upstream data of modulating and encode carries out the transmission of upstream data.
Notice, this moment data retransmission is used as first biography of new data and sends that so RV is set to 0 all the time, NDI is in continuous variation, add 1, become 0 by 1 as NDI in this example.
As shown in Figure 4, be the enforcement schematic diagram when retransmitting in the embodiment of the invention.
Benchmark NDI is 0, has new data to send, and is 1 so NDI adds 1.Pass headed by the new data, so RV is 0.Issue in the 1st the uplink grant information of terminal in the base station, comprising the MCS mode that this new data sends is 5, Physical Resource Block, and NDI is set is 1, RV is 0.
If but this uplink grant information dropout, terminal does not receive this 1st uplink grant information, terminal does not send anything on ascending resource so, and the base station is then detected less than anything on ascending resource, initiates the 2nd uplink grant information subsequently.In the 2nd uplink grant information, owing to retransmit, do not carry MCS information, RV is according to { 0,2,3,1,0,2,3,1, the 0.....} order increases progressively that to come value be 2, and it is 1 that NDI remains unchanged always.Similar the 3rd the uplink grant information (RV equals 3) that is retransmitted to, the 4th uplink grant information (RV equals 1), it is 1 that NDI wherein remains unchanged always, does not carry MCS information.To the 5th uplink grant information, remain re-transmission, it is 1 that NDI remains unchanged always, but this moment, RV was recycled to 0.The base station judges that the RV in the uplink grant information is 0, then carries effective MCS information, is 5.Also carry the Physical Resource Block that sends corresponding to the 5th upstream data.
Terminal receives this 5th uplink grant information, and obtaining MCS information is 5.Subsequently, terminal is 5 mode with MCS on the uplink resource (Physical Resource Block) of appointment, and the upstream data of modulating and encode carries out the transmission of upstream data.
Notice that constantly carry out data retransmission this moment, so the RV circulation change, NDI is constant, is 1 as NDI in this example always.
As shown in Figure 5, the enforcement schematic diagram when adaptive mode in the embodiment of the invention.
Benchmark NDI is 0, has new data to send, and is 1 so NDI adds 1.Pass headed by the new data, so RV is 0.The 1st uplink grant information of terminal is issued in the base station, and it is 1 that NDI adds 1, and RV is 0, and the base station finds that RV is 0 in this uplink grant information, is 7 so carry MCS information.This uplink grant information dropout, terminal do not receive this 1st uplink grant information.
The 2nd uplink grant information of terminal is issued in the base station, and it is 0 that NDI adds 1, and RV is 0, and the base station finds that RV is 0 in this uplink grant information, is 9 so carry MCS information.The 2nd uplink grant information is received by terminal, and obtaining MCS information is 9.Also carry the Physical Resource Block that sends corresponding to this upstream data.Subsequently, terminal is 9 mode with MCS on the uplink resource (Physical Resource Block) of appointment, and the upstream data of modulating and encode carries out the transmission of upstream data.
The 3rd uplink grant information of terminal is issued in the base station, and it is 1 that NDI adds 1, and RV is 0, and the base station finds that RV is 0 in this uplink grant information, is 4 so carry MCS information.The 3rd uplink grant information is received by terminal, and obtaining MCS information is 4.Also carry the Physical Resource Block that sends corresponding to this upstream data.Subsequently, terminal is 4 mode with MCS on the uplink resource (Physical Resource Block) of appointment, and the upstream data of modulating and encode carries out the transmission of upstream data.
Above-mentioned adaptive mode uses first the biography to finish, and also can use the re-transmission mode to finish in another embodiment, and just for adaptive mode, the efficient that retransmits mode is lower.
As shown in Figure 6, the enforcement schematic diagram when the non-self-adapting mode in the embodiment of the invention.
Benchmark NDI is 0, has new data to send, and is 1 so NDI adds 1.Pass headed by the new data, so RV is 0.The 1st uplink grant information of terminal is issued in the base station, and it is 1 that NDI adds 1, and RV is 0, and the base station finds that RV is 0 in this uplink grant information, is 4 so carry MCS information.This uplink grant information dropout, terminal do not receive this 1st uplink grant information.
The 2nd, 3 and 4 uplink grant information of terminal are issued in the base station, retransmit, and NDI is constant to be 1, does not carry MCS information.RV is according to { 0,2,3,1,0,2,3,1, the 0......} order increases progressively that to come value be 2,3 and 1.2nd, 3 and 4 uplink grant information are received by terminal.But do not carry MCS information in these uplink grant information this moment, so after terminal receives, do not have any upstream data and send.
The 5th uplink grant information of terminal is issued in the base station, retransmits, and NDI is constant to be 1, does not carry MCS information.RV is according to { 0,2,3,1,0,2,3,1, the 0......} order increases progressively that to come value be 0.The base station finds that RV is 0 in this uplink grant information, is 4 so carry MCS information.The 5th uplink grant information is received by terminal, and obtaining MCS information is 4.Also carry the Physical Resource Block that sends corresponding to this upstream data.Subsequently, terminal is 4 mode with MCS on the uplink resource (material resources piece) of appointment, and the upstream data of modulating and encode carries out the transmission of upstream data.
Subsequently, owing to be the non-self-adapting mode, the back has no longer included uplink grant information, and later upstream data transmission all is 4 mode in order to MCS, the upstream data of modulating and encode.
Above-mentioned adaptive mode is used to retransmit and is finished, and also can use first biography mode to finish in another embodiment.
When each re-transmission or head pass among the above embodiment, need redistribute corresponding this and upload the Physical Resource Block that data send, and this Physical Resource Block is issued terminal with MCS, NDI, RV.
As shown in Figure 7, be system handles schematic diagram in the embodiment of the invention, may further comprise the steps:
Step 510, base station send uplink grant information to terminal, if the RV that is carried in the uplink grant information is 0, carry MCS information so in this uplink grant information;
As shown in Figure 8, be the structural representation of system in the embodiment of the invention, comprising: base station 10 and terminal 20;
Described base station 10, be used to send uplink grant information to terminal 20, first pass data or data retransmission is used as new data carries out head when passing transmission, RV is set in the uplink grant information is 0 and NDI added 1, and in this uplink grant information, carry MCS; During data retransmission, RV is set in the uplink grant information and keeps NDI constant, when RV is set to 0, in this uplink grant information, carry MCS by default value set circulation; Carry promising this upstream data in the described uplink grant information and send the physical resource that distributes;
Described terminal 20 is used to receive the uplink grant information that described base station 10 sends, and reads RV wherein, when RV is 0, continues to read described MCS, carries out the transmission of upstream data on described physical resource according to described MCS.
Some specific implementations of each apparatus function are seen the description in the said method in the said system, repeat no more herein.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1, a kind of dispatching method that is used for the upstream data transmission is characterized in that,
The base station sends uplink grant information to terminal, and the redundancy version information RV that carries in uplink grant information is 0 o'clock, also carries Modulation and Coding Scheme MCS in this uplink grant information;
Described terminal receives the uplink grant information that described base station sends, and reads wherein that RV is at 0 o'clock, then continues to read MCS.
2, the method for claim 1 is characterized in that,
Described base station is first to be passed data or data retransmission is used as new data carries out head when passing transmission, and the new data indication information NDI that carries in the uplink grant information adds 1, and RV is set to 0, carries MCS in this uplink grant information.
3, the method for claim 1 is characterized in that,
During described base station data retransmission, NDI is constant, by default value set circulation RV is set, and when RV is set to 0, carries MCS in this uplink grant information.
4, the method for claim 1 is characterized in that,
Also carry promising this upstream data in the described uplink grant information and send the physical resource that distributes, described terminal is carried out the transmission of upstream data according to described MCS on described physical resource.
5, a kind of uplink dispatching system is characterized in that, comprising: base station and terminal, wherein,
Described base station is used to send uplink grant information to terminal, disposes RV in uplink grant information, also disposes MCS in this uplink grant information when RV is 0;
Described terminal is used to receive the uplink grant information that described base station sends, and reads RV wherein, continues to read described MCS when RV is 0.
6, system as claimed in claim 5 is characterized in that,
Described base station first pass data or data retransmission is used as new data carries out head when passing transmission, RV is set in the uplink grant information is 0 and NDI added 1, and carry MCS in this uplink grant information.
7, system as claimed in claim 6 is characterized in that,
Described base station when detecting data retransmission, is provided with in the uplink grant information RV and keeps NDI constant by default value set circulation, when RV is set to 0, carries MCS in this uplink grant information.
8, system as claimed in claim 5 is characterized in that,
Described base station is carried promising this upstream data and is sent the physical resource that distributes in the described uplink grant information of transmission;
Described terminal is carried out the transmission of upstream data on described physical resource according to described MCS.
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| CN104378183A (en) * | 2013-08-13 | 2015-02-25 | 普天信息技术有限公司 | Up data processing method and device |
| US11671120B2 (en) | 2015-11-12 | 2023-06-06 | Qualcomm Incorporated | Puncturing for structured low density parity check (LDPC) codes |
| US11496154B2 (en) | 2016-06-14 | 2022-11-08 | Qualcomm Incorporated | High performance, flexible, and compact low-density parity-check (LDPC) code |
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| US11831332B2 (en) | 2016-06-14 | 2023-11-28 | Qualcomm Incorporated | High performance, flexible, and compact low-density parity-check (LDPC) code |
| US11239860B2 (en) | 2016-06-14 | 2022-02-01 | Qualcomm Incorporated | Methods and apparatus for compactly describing lifted low-density parity-check (LDPC) codes |
| USRE49989E1 (en) | 2017-06-10 | 2024-05-28 | Qualcomm Incorporated | Communication techniques involving pairwise orthogonality of adjacent rows in LPDC code |
| CN109150478B (en) * | 2017-06-16 | 2020-09-08 | 华为技术有限公司 | Channel quality feedback method and device |
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| CN109150478A (en) * | 2017-06-16 | 2019-01-04 | 华为技术有限公司 | channel quality feedback method and device |
| CN110771077B (en) * | 2017-06-19 | 2022-07-01 | 高通股份有限公司 | Communication method and apparatus utilizing self-decodable redundancy versions using systematic codes |
| CN110771077A (en) * | 2017-06-19 | 2020-02-07 | 高通股份有限公司 | Communication techniques utilizing self-decodable Redundancy Versions (RVs) using systematic codes |
| WO2022213820A1 (en) * | 2021-04-09 | 2022-10-13 | 华为技术有限公司 | Data transmission method and apparatus |
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