CN101237313B - HARQ feedback method for HFDD user asymmetric receiving/transmission mode - Google Patents
HARQ feedback method for HFDD user asymmetric receiving/transmission mode Download PDFInfo
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Abstract
The information provides an HARQ feedback method for a HFDD user non-symmetric transmission and reception pattern, comprising the following steps of: according to the downlink burst data of P2 continuous subframes, performing P2 HARQ information feedbacks in a single ACK/NACK mode to the last subframe of the following adjacent uplink burst; according to the uplink burst data of P3 continuous subframess, performing P3 HARQ information feedbacks in a single ACK/NACK mode to the last subframe of the following adjacent uplink burst. The method provides a proper HARQ feedback method for the HFDD user symmetric transmission and reception pattern according to the properties of the HFDD.
Description
Technical field
The present invention relates to the communications field; Particularly; HARQ (Hybrid Automatic Repeat reQuest, the mixed automatic retransmission request) feedback method that relates to a kind of HFDD (HalfFrequency Division Duplex, Half-Frequency Division Duplex) asymmetric type transceiver mode of user.
Background technology
HFDD can adapt to spectrum allocation may flexibly, and is with low cost owing to not adopting duplexer to make simultaneously.GSM (Global System for MobileCommunications, the global system for mobile communications) terminal of widely adopting is exactly a kind of HFDD mode, and GSM terminal transmitting-receiving relation is fairly simple, this working method terminal circuit working mode that realized eating dishes without rice or wine.At the mobile radio system such as WiMAX (the Worldwide Interoperability for Microwave Access that with eat dishes without rice or wine packetizing and link circuit self-adapting are characteristic; Micro-wave access global inter communication) and LTE (Long Term Evolution; Long Term Evolution) introduce HFDD in and will consider the demand more more complicated, specifically be summarized as than GSM:
1, the unification of HFDD and FDD (Frequency Division Duplex, FDD) and TDD (Time Division Duplex, time division duplex):
A) purpose is to make HFDD, FDD and many kinds of duplex terminals of TDD realize simple;
B) HFDD terminal and FDD terminal coexist in same system; Therefore require HFDD and FDD should keep in full accord at public control section such as descending synchronizing channel, broadcast channel and PCH and uplink random access channel etc., the Subframe (subframe) that therefore confirms as uplink and downlink at FDD should continue maintenance at HFDD;
C) also need keep the sequential relationship of FDD up-downgoing data channel and corresponding control channel; With LTE is that example keeps DL-SCH (Down Link-SynchronizationChannel exactly; Downlink Synchronization Channel) (PDSCH) (Physical Downlink ShareCHhannel; Physical Downlink Shared Channel) and ACK/NACK (affirmation/negative acknowledgment), UL-SCH (PUSCH (Physical Uplink Share Channel; Physical Uplink Shared Channel)) and PHICH (Physical HARQ Indication Channel; Physical HARQ Indicator Channel) and the sequential relationship of PDCCH (Physical Downlink Control CHannel, Physical Downlink Control Channel) carrying UL grant and UL-SCH (Up Link-Synchronization Channel, uplink synchronisation channel).
D) use the for example many ACK/NACK feedbacks of TDD thought thought.
2, the specific transceiver mode of user (UE, User Equipment subscriber equipment can abbreviate the user as) should keep stability after initial assignment:
A) the specific transceiver mode (UE Specific transmission/receptionpattern) of user is meant the logical relation of user between receiving and dispatching;
B) no matter be continuous dispatching or dynamic dispatching, the specific transceiver mode of user should be just to decide after the initial assignment, can avoid a large amount of signaling assigned user transmitting-receiving relations like this;
C) after user's AD HOC was specified, user's dynamic just showed ground self adaptations such as frequency domain, modulation domain and antenna territory;
D) the specific transceiver mode of user mainly designs and considers the constraint of CCCH time slot according to the sequential relationship of FDD up-downgoing data channel and corresponding control channel.
3, the specific transceiver mode of user should be equally applicable to continuous dispatching and dynamic dispatching
4, the specific transceiver mode of user should be supported the asymmetric tenability of time-domain, the down link that agreement DL (Down Link) refers to, the up link that UL (Up Link) refers to, and then asymmetric support specifically comprises following 5 big types:
The 1st type, has only downlink data: i.e. DL Data Only+UL Control pattern
The 2nd type, has only upstream data: i.e. UL Data Only+DL Control pattern
The 3rd type, up-downgoing data symmetry: i.e. DL/UL Data+DL/UL Control pattern
The 4th type, descending be dominant asymmetric: promptly DL is dominant/UL Data+DL/ULControl pattern
The 5th type, up be dominant asymmetric: the i.e. DL/UL Data+DL/ULControl pattern that is dominant
5, different HFDD user's orthogonal multiplex
Fig. 1 shows the basic transceiver mode figure of prior art FDD.First data 101 are designated Datal, and second data Data2 sends behind a certain intervals N=24 Subslot.Behind an interval M=3 Subslot, provide ACK/NACK1 information 103 after receiving for first data 101 terminals; The base station obtains determining whether to retransmit after this information; If receive it is nack message; Then the base station resends data RT11 102, and similarly whether base station waits ACK/NACK2 and ACK/NACK3 decision carries out data RT 12 and the retransmit RT 13 for the third time second time.The time interval between 101 and 102 is defined as RTT (Round Trip Time, wireless transmission at interval).
Adopt discontinuous transmission and discontinuous receive mode to the technological terminal of eating dishes without rice or wine of packetizing in this; Being with the GSM fundamental difference that this discontinuity depends primarily on whether to feed back to retransmit changes; Among the figure 104,105 and 106 represent respectively the base station to the terminal once, the transceiver mode transmitted of secondary and three times success, the terminal is in reception, waits for and launches three kinds of states.
Can find out that from figure Data 2 and RT 13 are in same position, have avoided the arrangement of extra Subslot.
In realizing process of the present invention; The assigning method of user's transceiver mode that the inventor finds to provide in the prior art is only applicable to FDD or TDD; And HFDD has the advantages that to be different from FDD and TDD, so the HARQ feedback method of the asymmetric type transceiver mode of existing user can't be suitable for user's transceiver mode of HFDD.
Summary of the invention
The present invention aims to provide the HARQ feedback method of the asymmetric type transceiver mode of a kind of HFDD user, and the HARQ feedback method that can solve the asymmetric type transceiver mode of existing user can't be suitable for the problems such as user's transceiver mode of HFDD.
In an embodiment of the present invention; The HARQ feedback method of the asymmetric type transceiver mode of a kind of HFDD user is provided; Comprise the steps: downlink burst data, in the HARQ information of P2 ACK/NACK mode of last subframe feedback of its adjacent next uplink burst to continuous P 2 sub-frame; And the uplink burst data that is directed against continuous P 3 sub-frame; HARQ information in P3 ACK/NACK mode of last subframe feedback of its adjacent next downlink burst; Wherein, the downlink burst data of continuous P 2 sub-frame constitutes a downlink burst, and the uplink burst data of continuous P 3 sub-frame constitutes a uplink burst; And P2 is smaller or equal to M+1; P3 is smaller or equal to M+1, and M representes the length of UL data and corresponding D LACK/NACK length and DL data and the corresponding ULACK/NACK between replying between replying, and these two equal in length.
Preferably, also comprise: for P3＞P2, it is M sub-slots at interval that the sub-slots of last transmission of subscriber equipment and the sub-slots of adjacent last reception are set in advance; For P3＜P2, it is M sub-slots at interval that the sub-slots of last reception and the sub-slots of adjacent last transmission are set in advance; For P3=P2, being provided with in advance that each corresponding sub-slots all keeps is M sub-slots at interval.
Preferably, the relation of P2 and P3 comprises: the 1st type, have only downlink data; The 2nd type, has only upstream data; The 3rd type, up-downgoing data symmetry; The 4th type, descending be dominant asymmetric; The 5th type, up be dominant asymmetric.
Embodiments of the invention are because adopt the method for many ACK/NACK mode feedback information; So overcome the problem that the HARQ feedback method of the asymmetric type transceiver mode of existing user can't be suitable for user's transceiver mode of HFDD, and then appropriate H ARQ be provided feedback method for the asymmetric type transceiver mode of HFDD user.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows basic transceiver mode figure;
Fig. 2 shows the flow chart according to the assigning method of HFDD user's transceiver mode of the embodiment of the invention;
The downlink data that has only that Fig. 3 shows according to the embodiment of the invention is a DL DataOnly+UL Control ideograph;
The upstream data that has only that Fig. 4 shows according to the embodiment of the invention is a UL DataOnly+DL Control ideograph;
The up-downgoing data symmetry that Fig. 5 shows according to the embodiment of the invention is a DL/UL Data+DL/UL Control ideograph;
The descending asymmetric DL of being that is dominant that Fig. 6 shows according to the embodiment of the invention is dominant/UL Data+DL/UL Control ideograph;
Fig. 7 shows the up asymmetric DL/UL of being that is dominant according to the embodiment of the invention Data+DL/UL Control ideograph that is dominant;
Fig. 8 shows according to the multiplexing figure of the different user of the embodiment of the invention;
Fig. 9 shows the HFDD transceiver mode parameter interpretation figure according to the embodiment of the invention;
Figure 10 shows the flow chart according to the HARQ feedback method of the asymmetric type transceiver mode of the HFDD user of the embodiment of the invention;
Figure 11 shows the sketch map according to the HARQ feedback of the embodiment of the invention.
Embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
Fig. 2 shows the flow chart according to the assigning method of HFDD user's transceiver mode of the embodiment of the invention, comprises the steps:
Step S10, the M that gets parms of the system parameters through the HFDD system, wherein M representes the length of UL data and corresponding D L ACK/NACK length and DL data and the corresponding UL ACK/NACK between replying between replying, and these two equal in length;
Step S20, the type of service through subscriber equipment get parms N, P2, P3, P4, P5, P6, wherein N representes the basic cycle of subscriber equipment transmitting-receiving; P2 representes that subscriber equipment sends once descending length, and P2 is smaller or equal to M+1; P3 representes that subscriber equipment sends once up length, and P3 is smaller or equal to M+1; P4 representes HARQ number of subscriber equipment; P5 representes scheduling type; P6 representes the relation of P2 and P3, and it comprises symmetry class and asymmetric type;
Step S30, parameter P1 is confirmed according to the public control section of N, P2, P3, P4, P5, P6 and HFDD system in the base station, wherein P1 representes initial phase, the initial position that its specific base is sent to subscriber equipment, scope is 0～N-1;
Step S40 sends N, P1, P2, P3, P4, P5, P6 to subscriber equipment; And
Step S50, subscriber equipment is confirmed the transmitting-receiving position of data transmission first and is confirmed next Data Position and data retransmission position according to N and M according to N, P1, P2, P3, P4, P5, P6.
This embodiment is because adopt the method through system parameters and user device parameters specified data position; So overcome user's transceiver mode problem that existing assigning method can't be suitable for HFDD, and then suitable assigning method be provided for HFDD user's transceiver mode.
In addition, the above embodiments are because to the possible asymmetrical relation of uplink burst and downlink burst, special configuration parameter P2, P3 and P6, so be particularly suitable for HFDD user's transceiver mode of asymmetric type.
DL and UL feedback retransmits resource by base station dynamic assignment under the specific transceiver mode constraint of user in an embodiment of the present invention, and particular location can be obtained by N, P1, P2, P3, P4, P5 and P6; The terminal is according to receiving correctly whether downlink data determines whether that carrying out data retransmission at predetermined instant receives; And terminal transmission upstream data just determines whether to carry out the data retransmission emission at predetermined instant after must receiving the base station answer; Above data retransmission obtains after sending and receive and can being obtained by parameter N, P1, P2, P3, P4, P5 and P6 automatically, so transceiver mode of the present invention is that the user is specific and metastable; And the orthogonality of different user transceiver mode has been guaranteed in the base station.
Preferably, the base station confirms that according to the public control section of N, P2, P3, P4, P5, P6 and HFDD system parameter P1 meets the following conditions: the priority of up transmission is lower than the priority of synchronizing channel, broadcast channel and the PCH of the public control of descending reception; And the priority of descending reception data is lower than the priority that uplink random inserts.
The public control section of parameter N, P2, P3, P4, P5 and P6 and system that above preferred embodiment explanation base station is confirmed according to the own resource situation, by step S20 such as the constraint of descending synchronizing channel, broadcast channel and PCH and uplink random access channel; Confirm P1 at last; When up in principle transmission conflicts with synchronizing channel, broadcast channel and the PCH of the public control of descending reception; Do not consider; The preferential random access resource that guarantees in the time of descending reception data and uplink random access interference, this data basestation emission next time.
Preferably, also comprise: for P3＞P2, it is M sub-slots at interval that the sub-slots of last transmission of subscriber equipment and the sub-slots of adjacent last reception are set; For P3＜P2, it is M sub-slots at interval that the sub-slots of last reception and the sub-slots of adjacent last transmission are set; For P3=P2, being provided with that each corresponding sub-slots all keeps is M sub-slots at interval.
Above preferred embodiment has guaranteed angle reliably the carrying out for asymmetric mode HARQ from the terminal.
Preferably, the scheduling type represented of P5 comprises: continuous dispatching and dynamic dispatching.
Preferably, also comprise: for continuous dispatching then N carry out cycle transmitting-receiving the cycle.
Preferably, asymmetric type confirms that it is Data, Control or its combination that concrete transmitting-receiving sub-slots carries information type.
Preferably, P2 that P6 representes and the relation of P3 comprise: the 1st type, have only downlink data; 2 types of the mat woven of fine bamboo strips have only upstream data; The 3rd type, up-downgoing data symmetry; The 4th type, descending be dominant asymmetric; The 5th type, up be dominant asymmetric.
The downlink data that has only that Fig. 3 shows according to the embodiment of the invention is a DL DataOnly+UL Control ideograph; Having only downlink data is DL Data Only+ULControl pattern, has comprised data message among the descending Subslot but control information does not comprise the control information for the ACK/NACK of upstream data.There is not data message only to comprise the control information of ACK/NACK among the up Subslot.D/C representes that existing data (Data) have control (Control) again among the figure; C representes to have only control (Control).
The upstream data that has only that Fig. 4 shows according to the embodiment of the invention is a UL DataOnly+DL Control ideograph; Having only upstream data is UL Data Only+DLControl pattern, has comprised data message among the up Subslot but control information does not comprise the control information for the ACK/NACK of downlink data.There is not data message only to comprise the control information of ACK/NACK among the descending Subslot.D/C representes that existing data (Data) have control (Control) again among the figure; C representes to have only control (Control).
The up-downgoing data symmetry that Fig. 5 shows according to the embodiment of the invention is a DL/UL Data+DL/UL Control ideograph; In up-downgoing data symmetry is both to have comprised that data message also had the control information that comprises ACK/NACK among the descending and up Subslot of DL/UL Data+DL/ULControl pattern.Uplink and downlink Subslot number equates.D/C representes that existing data (Data) have control (Control) again among the figure; C representes to have only control (Control).
The descending asymmetric DL of being that is dominant that Fig. 6 shows according to the embodiment of the invention is dominant/UL Data+DL/UL Control ideograph; Be dominant at the descending asymmetric DL of being that is dominant/UL Data+DL/UL Control pattern, up Subslot and descending Subslot are unequal, P3＜P2, but all comprised the control information of ACK/NACK.D/C representes that existing data (Data) have control (Control) again among the figure; C representes to have only control (Control).
Fig. 7 shows the up asymmetric DL/UL of being that is dominant according to the embodiment of the invention Data+DL/UL Control ideograph that is dominant; In the up asymmetric DL/UL of being that the is dominant Data+DL/UL Control pattern that is dominant, up Subslot and descending Subslot are unequal, P3＞P2, but all comprised the control information of ACK/NACK.D/C representes that existing data (Data) have control (Control) again among the figure; C representes to have only control (Control).
Fig. 8 shows according to the multiplexing figure of the different user of the embodiment of the invention; UE 1 is up-downgoing symmetry user, and UE 2 is the descending users of being dominant, and UE 3 is the up users of being dominant.See that from figure the base station can be fine multiplexing under the whole base station system time reference condition of assurance through scheduling, this is that the GSM that does not carry out frequency domain dispatching does not accomplish.See that from Fig. 8 all UE arrange in order under system's benchmark, scheduling and the arrangement of user's transceiver mode are separating that the concrete pattern of HFDD can appropriateness, and have significantly reduced the complexity of system design.
Fig. 9 shows the HFDD transceiver mode parameter interpretation figure according to the embodiment of the invention, has provided the art-recognized meanings of different parameters M, N, P1, P2, P3, P4, P5 and P6 among the figure.Can find out that through figure M, N, P1, P2, P3, P4, P5 and P6 are the minimum parameter collection of user's transceiver mode.
Embodiments of the invention are because adopt the method through system parameters and user device parameters specified data position; So overcome user's transceiver mode problem that existing assigning method can't be suitable for HFDD, and then suitable assigning method be provided for HFDD user's transceiver mode.
Figure 10 shows the flow process according to the HARQ feedback method of the asymmetric type transceiver mode of the HFDD user of the embodiment of the invention, comprises the steps:
Step S10 is to the downlink burst data of continuous P 2 sub-frame, in the HARQ information of P2 ACK/NACK mode of last subframe feedback of its adjacent next uplink burst; And
Step S20, to the uplink burst data of continuous P 3 sub-frame, in the HARQ information of P3 ACK/NACK mode of last subframe feedback of its adjacent next downlink burst,
Wherein, The downlink burst data of continuous P 2 sub-frame constitutes a downlink burst; The uplink burst data of continuous P 3 sub-frame constitutes a uplink burst, and P2 is smaller or equal to M+1, and P3 is smaller or equal to M+1; M representes the length of UL data and corresponding D L ACK/NACK length and DL data and the corresponding UL ACK/NACK between replying between replying, and these two equal in length.
Embodiments of the invention are because adopt the method for many ACK/NACK mode feedback information; So overcome the problem that the HARQ feedback method of the asymmetric type transceiver mode of existing user can't be suitable for user's transceiver mode of HFDD, and then appropriate H ARQ be provided feedback method for the asymmetric type transceiver mode of HFDD user.
In addition, the above embodiments are because to the possible asymmetrical relation of uplink burst and downlink burst, special configuration parameter P2, P3 and P6, so be particularly suitable for HFDD user's transceiver mode of asymmetric type.
Preferably, also comprise: for P3＞P2, it is M sub-slots at interval that the sub-slots of last transmission of subscriber equipment and the sub-slots of adjacent last reception are set in advance; For P3＜P2, it is M sub-slots at interval that the sub-slots of last reception and the sub-slots of adjacent last transmission are set in advance; For P3=P2, being provided with in advance that each corresponding sub-slots all keeps is M sub-slots at interval.
Above preferred embodiment has guaranteed reliably carrying out of from terminal angle HARQ.
Preferably, the relation of P2 and P3 comprises: the 1st type, have only downlink data; The 2nd type, has only upstream data; The 3rd type, up-downgoing data symmetry; The 4th type, descending be dominant asymmetric; The 5th type, up be dominant asymmetric.
Parameter in the embodiment of the invention is applicable to that uplink and downlink transmit data, data retransmission, ACK/NACK feedback information etc. first.
Embodiments of the invention; Guaranteed that with the similar HARQ design of FDD last time, relevant HARQ information up or downlink burst can be sent by base station or terminal at adjacent next descending or uplink burst, and do not needed extra and uncontrollable time delay to exist.
Figure 11 shows the sketch map according to the HARQ feedback of the embodiment of the invention; 101 Subframe in uplink burst on three Subframe in downlink burst adopt many ACK/NACK mode 102 to carry out the HARQ feedback information, 103 Subframe in downlink burst on two Subframe in uplink burst adopt many ACK/NACK mode 104 to carry out the HARQ feedback information.Wherein D/C representes that existing data (Data) have control (Control) again.
Embodiments of the invention are because adopt the method for many ACK/NACK mode feedback information; So overcome the problem that the HARQ feedback method of the asymmetric type transceiver mode of existing user can't be suitable for user's transceiver mode of HFDD, and then appropriate H ARQ be provided feedback method for the asymmetric type transceiver mode of HFDD user.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. the HARQ feedback method of the asymmetric type transceiver mode of HFDD user is characterized in that:
To the downlink burst data of continuous P 2 sub-frame, in the HARQ information of P2 ACK/NACK mode of last subframe feedback of its adjacent next uplink burst;
To the uplink burst data of continuous P 3 sub-frame, in the HARQ information of P3 ACK/NACK mode of last subframe feedback of its adjacent next downlink burst,
Wherein, The downlink burst data of continuous P 2 sub-frame constitutes a downlink burst; The uplink burst data of continuous P 3 sub-frame constitutes a uplink burst, and P2 is smaller or equal to M+1, and P3 is smaller or equal to M+1; M representes the number of the sub-slots between UL data and the corresponding D L ACK/NACK answer and the number of the sub-slots between DL data and the corresponding ULACK/NACK answer, and the number of these two sub-slots equates.
2. HARQ feedback method according to claim 1 is characterized in that, also comprises:
For P3＞P2, it is M sub-slots at interval that the sub-slots of last transmission of subscriber equipment and the sub-slots of adjacent last reception are set in advance;
For P3＜P2, it is M sub-slots at interval that the sub-slots of last reception and the sub-slots of adjacent last transmission are set in advance;
For P3=P2, being provided with in advance that each corresponding sub-slots all keeps is M sub-slots at interval.
3. HARQ feedback method according to claim 1 is characterized in that, the relation of P2 and P3 comprises:
The 1st type, has only downlink data;
The 2nd type, has only upstream data;
The 3rd type, up-downgoing data symmetry;
The 4th type, descending be dominant asymmetric;
The 5th type, up be dominant asymmetric.
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| CN101729221B (en) * | 2008-10-20 | 2013-02-27 | 中兴通讯股份有限公司 | Multi-subframe uplink scheduling method for time division multiplexing system |
| KR101970684B1 (en) | 2012-02-28 | 2019-04-19 | 삼성전자주식회사 | Apparatus and method for transmitting feedback information in wireless communication system |
| EP3567754B1 (en) * | 2015-03-31 | 2022-05-18 | Huawei Technologies Co., Ltd. | Communication method in time division duplex system, base station, and user equipment |
| US10153832B2 (en) * | 2016-01-28 | 2018-12-11 | Qualcomm Incorporated | Asymmetric forward link and reverse link subframe split |
| JP6968263B2 (en) | 2017-08-11 | 2021-11-17 | 中▲興▼通▲訊▼股▲ふぇん▼有限公司Zte Corporation | Methods and equipment for resource allocation in wireless communication |
| CN109803440B (en) | 2017-11-16 | 2021-04-06 | 电信科学技术研究院 | Method and equipment for random access |
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| CN1518844A (en) * | 2001-06-15 | 2004-08-04 | 摩托罗拉公司 | Method for providing communication channel in time division duplexing (TDD) mode between TDD mobile and TDD base station |
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| CN1518844A (en) * | 2001-06-15 | 2004-08-04 | 摩托罗拉公司 | Method for providing communication channel in time division duplexing (TDD) mode between TDD mobile and TDD base station |
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