CN104104467B

CN104104467B - Transmission, method for transmission processing and the device of downlink data

Info

Publication number: CN104104467B
Application number: CN201310116205.1A
Authority: CN
Inventors: 石靖; 戴博; 夏树强; 李新彩; 方惠英
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2013-04-03
Filing date: 2013-04-03
Publication date: 2019-06-25
Anticipated expiration: 2033-04-03
Also published as: CN104104467A; WO2014161495A1

Abstract

The present invention provides a kind of transmission of downlink data, method for transmission processing and devices.Wherein, above-mentioned transmission method includes: to obtain for triggering the triggering information using specified transmission mode；Downlink data is transmitted using transmission mode corresponding with the triggering information according to the triggering information.Using above-mentioned technical proposal provided by the invention, it solves in the related technology, the not high technical problem of data transmission credibility in the communication system for thering is special covering to require, to ensure that the terminal device under low overlay environment can be properly received the data information of base station side, the normal communication of the terminal under environment equipment ensure that.

Description

Transmission, method for transmission processing and the device of downlink data

Technical field

The present invention relates to the communications fields, more particularly, to a kind of transmission of downlink data, method for transmission processing and device.

Background technique

Machine type communication (Machine Type Communication, referred to as MTC) user terminal (MTC User Equipment, abbreviation MTC terminal), also known as machine to machine (Machine to Machine, abbreviation M2M) user communication is set It is standby, it is the main application form of Internet of Things at this stage.In recent years, due to long term evolution/senior long term evolution (Long Term Evolution/Long Term Evolution Advance, referred to as LTE/LTE-A) spectrum efficiency it is high, more and more Mobile operator selects evolution tendency of the LTE/LTE-A as system of broadband wireless communication.More kinds of MTC based on LTE/LTE-A Class data service also will be more attractive.

The downlink transmission data of existing LTE/LTE-A system is mainly by Physical Downlink Shared Channel (Physical Downlink Share Channel, referred to as PDSCH) carrying.The correct transmission of data first is that by control channel scheduling Instruction, second is that by the channel estimation results of reference signal.

In MTC, there is a Terminal Type to be limited and be remarkably decreased so as to cause covering performance due to present position or self-characteristic. For this Terminal Type, under low overlay environment, need to carry out special coverage enhancement measure.The time domain of usual data service repeats It sends, i.e., multiple subframe bundling transmission, carries out time domain to repeat energy accumulation being promotion covering the most basic in receiving end Method.But since covering promotes desired raising, since channel estimation is no longer accurate in low signal-to-noise ratio section, to influence Performance of the Traffic Channel when time domain repeats.Therefore it needs to consider how to promote the accurate of channel estimation in low signal-to-noise ratio section Property.Another kind considers, coherent demodulation is carried out independent of reference signal, for example, by using differential quadrature phase keying (DQPSK) (Differential Quadrature Phase Shift Keying, referred to as DQPSK) may be implemented, and uses logical in light more Believe in device.The scheme using DQPSK was not yet proposed in LTE system.

In addition, when transmitting data is control information, the control channel of existing LTE system -- Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH) needs transmit in whole system bandwidth, and MTC Terminal is due to that may use the carry out Base-Band Processing less than system bandwidth, it seem likely that not being available PDCCH.So for Enhancing Physical Downlink Control Channel (enhanced Physical Downlink still can be used in control channel for MTC Control Channel, referred to as ePDCCH).For the ePDCCH that LTE R11 version is supported, the proprietary control letter of UE is only supported Breath, the demodulation pilot tone of support are UE special reference signal (UE-specific reference signals, referred to as DMRS). In the MTC subject study of LTE, terminal relatively low for this cost at present current each company in transmission mode reaches Consistent viewpoint is only to support transmission mode (Transmission Mode, referred to as TM) 1 and 2, i.e., on the problem of pilot tone uses DMRS may not be supported at present, while needing support UE proprietary control information and publicly-owned control information.And lesser In MTC bandwidth, at present agreement support based on enhancing resource unit group (enhanced Resource element Group, letter Referred to as eREG) some smaller polymerization grades for there is the MTC terminal of coverage enhancement demand to be unable to satisfy performance requirement.It needs to examine Consider when being suitble to small bandwidth for transmission based on cell reference signals (Cell-specific reference signals, referred to as CRS ePDCCH design).The single sub-frame dynamic dispatching instruction of control channel is also required to be changed under low overlay environment simultaneously Into having and control channel be also required to when the demand of coverage enhancement to carry out multiple duplicate transmission modes of subframe time domain.

Therefore for the communication system for thering is special covering to require, need to design a kind of more flexible downlink transmission mode, To solve requirement of the communication system to data transmission credibility.

In view of the above problems in the related art, currently no effective solution has been proposed.

Summary of the invention

For in the related technology, the not high technology of data transmission credibility is asked in the communication system for having special covering to require Topic, the present invention provides a kind of transmission of downlink data, method for transmission processing and devices, at least to solve the above problems.

According to an aspect of the invention, there is provided a kind of transmission method of downlink data, is applied to base station, this method packet It includes: obtaining for triggering the triggering information using specified transmission mode；It is used and the triggering information according to the triggering information Corresponding transmission mode transmits downlink data.

Preferably, the triggering information, including at least one of: being used for transmission the number of the subframe of the downlink data Amount, the type of terminal for receiving the downlink data receive transmission indication signaling from upper layer.

Preferably, the quantity of the subframe is determined according to the Physical Random Access Channel type that the terminal is sent.

Preferably, the lower line number is transmitted using transmission mode corresponding with the triggering information according to the triggering information According to, comprising: have in subframe CRS transmit and at least one of, for the Physical Downlink Control Channel of enhancing EPDCCH, transmit the downlink data using the transmission mode based on CRS: the quantity of the subframe is greater than 1；The class of the terminal Type is specified type；Receive the transmission indication signaling.

Preferably, before using the transmission mode transmission downlink data based on CRS, comprising: held to the ePDCCH The downlink data carried, with Physical Resource Block (Physical Resource Block, referred to as PRB) for resource allocation list Bit allocation is used for transmission the resource of the downlink data.

It preferably, is to transmit described downlink data distribution following one PRB:1 by resource allocation unit of the PRB PRB, 2 PRB, 3 PRB, 4 PRB, 6 PRB.

It preferably, include: that the business that is used to indicate repeats subframe and control repetition subframe in the control information of the ePDCCH Transmission time interval.

Preferably, the starting OFDM symbol of the ePDCCH uses starting predetermined when no high-level signaling configures Position.

Preferably, the initial position is one of the following: the 1st OFDM symbol, the 2nd OFDM symbol, the 3rd OFDM symbol Number, the 4th OFDM symbol, the 5th OFDM symbol.

Preferably, the lower line number is transmitted using transmission mode corresponding with the triggering information according to the triggering information According to, comprising: at least one of, at least two channels use identical transmission side in predefined channel set Formula: the quantity of the subframe is greater than 1；The type of the terminal is specified type；Receive the transmission indication signaling.

It preferably, include following at least two channel in the predefined channel set: carrying user's proprietary data letter The Physical Downlink Shared Channel PDSCH of breath, PDSCH, primary synchronization channel, the auxiliary synchronization channel, broadcast for carrying publicly-owned data information Channel.

Preferably, the lower line number is transmitted using transmission mode corresponding with the triggering information according to the triggering information According to, comprising: the subframe and user's proprietary data information of the publicly-owned data information are transmitted using time-multiplexed mode Subframe；And/or using time-multiplexed mode transmit the proprietary Downlink Control Information of user subframe and user's proprietary data The PDSCH subframe of information.

Preferably, it when the downlink data transmits over multiple subframes, in predetermined period, is sent out as unit of time domain unit Send the downlink data, wherein each time domain unit includes M subframe, and M is positive integer.

Preferably, the predetermined period includes N number of radio frames, and N is positive integer；For sending institute in the predetermined period There is one or more in the time domain unit position for stating downlink data, wherein only select one of them described time domain unit position hair It send the downlink data and each time domain unit position corresponds at least one described time domain unit.

Preferably, it is used for transmission the integral multiple that the quantity of the subframe of user's proprietary data information is 4.

Preferably, the subframe for being used for transmission user's proprietary data information: the 1st subframe, the 2nd is selected from following subframe Subframe, the 3rd subframe, the 4th subframe, the 6th subframe, the 7th subframe, the 8th subframe, the 9th subframe.

Preferably, before using the transmission mode transmission downlink data based on CRS, comprising: at least one of In the case of, the downlink data is modulated the downlink data using differential quadrature phase keying (DQPSK) DQPSK mode: described The quantity of subframe is greater than 1；The type of the terminal is specified type；The transmission indication signaling indicates the tune of the downlink data Mode processed is DQPSK.

Preferably, when being modulated using the DQPSK to the downlink data, the start reference symbol packet that uses It includes: predefined value or specified pilot tone.

Preferably, the specified pilot tone is used with flowering structure: the resource unit RE that each pilot frequency port is included occupies number The portion in data transfer bandwidth is occupied according to the RE that one or more OFDM symbols, each pilot frequency port in transmission bandwidth are included Divide at least one of RE.

Preferably, the specified type includes at least one of: low cost terminals, the terminal of designated position are supported to cover The terminal of lid enhancing technology.

According to another aspect of the present invention, a kind of method for transmission processing of downlink data is provided, terminal, packet are applied to It includes: obtaining for triggering the triggering information using specified transmission mode；It is connect according to transmission mode corresponding with the triggering information Receive the downlink data.

Preferably, the triggering information, including at least one of: Physical Random Access Channel (Physical Random Access Channel, referred to as PRACH) type, the type of the terminal, receive transmission indication signaling.

Preferably, the quantity for receiving the subframe of the downlink data is determined according to the PRACH type.

Preferably, the downlink data is received according to transmission mode corresponding with the triggering information, comprising: in subframe There is CRS to transmit and at least one of, for the Physical Downlink Control Channel ePDCCH of enhancing, using being based on CRS Transmission mode transmit the downlink data: the quantity of the subframe is greater than 1；The type of the terminal is specified type；It receives To the transmission indication signaling.

Preferably, before using the transmission mode reception downlink data based on CRS, comprising: held to the ePDCCH The downlink data carried, the resource for receiving the downlink data is distributed using Physical Resource Block PRB as resource allocation unit.

It preferably, is to receive described downlink data distribution following one PRB:1 by resource allocation unit of the PRB PRB, 2 PRB, 3 PRB, 4 PRB, 6 PRB.

Preferably, receive the downlink data according to transmission mode corresponding with the triggering information, comprising: with down toward In the case of one of few, at least two channels use identical transmission mode: the number of the subframe in predefined channel set Amount is greater than 1；The type of the terminal is specified type；Receive the transmission indication signaling.

It preferably, include following at least two channel in the channel set: the physics of carrying user's proprietary data information PDSCH, primary synchronization channel, auxiliary synchronization channel, the broadcast channel of DSCH Downlink Shared Channel PDSCH, the publicly-owned data information of carrying.

Preferably, the downlink data, including following one are received according to transmission mode corresponding with the triggering information: The subframe of the publicly-owned data information and the subframe of user's proprietary data information are received using time-multiplexed mode；With/ Or the subframe and user's proprietary data information of the proprietary Downlink Control Information of user are received using time-multiplexed mode PDSCH subframe.

Preferably, the predetermined period includes N number of radio frames, and N is positive integer；For sending institute in the predetermined period There is one or more in the time domain unit position for stating downlink data, terminal detects the lower line number on the time domain unit position According to and each time domain unit position correspond at least one described time domain unit.

Preferably, the integral multiple that the quantity for receiving the subframe of user's proprietary data information is 4.

Preferably, the subframe for receiving user's proprietary data information: the 1st subframe, the 2nd is selected from following subframe Subframe, the 3rd subframe, the 4th subframe, the 6th subframe, the 7th subframe, the 8th subframe, the 9th subframe.

Preferably, before using the transmission mode reception downlink data based on CRS, comprising: at least one of In the case of, the downlink data demodulates the downlink data using differential quadrature phase keying (DQPSK) DQPSK mode: described The quantity of subframe is greater than 1；The type of the terminal is specified type；The transmission indication signaling indicates the tune of the downlink data Mode processed is DQPSK.

Preferably, when being demodulated using the DQPSK to the downlink data, the start reference symbol packet that uses It includes: predefined value or specified pilot tone.

According to a further aspect of the invention, a kind of transmitting device of downlink data is provided, base station is applied to, comprising: Module is obtained, for obtaining the triggering information for being used to trigger using specified transmission mode；Transmission module, for according to the triggering Information transmits the downlink data using transmission mode corresponding with the triggering information.

Preferably, the acquisition module, for obtaining the triggering information including at least one of information: for passing The quantity of the subframe of the defeated downlink data, is received from upper layer the type of terminal for receiving the downlink data Transmit indication signaling.

According to a further aspect of the invention, a kind of transmission processing device of downlink data is provided, terminal is applied to, it should Device includes: acquisition module, for obtaining the triggering information for being used to trigger using specified transmission mode；Receiving module, for pressing The downlink data is received according to transmission mode corresponding with the triggering information.

Preferably, the acquisition module, for obtaining the triggering information including at least one of information: physics with Machine accesses channel PRACH type, the type of the terminal, the transmission indication signaling received.

Through the invention, downlink data to be transmitted is transmitted using specified transmission mode using according to the triggering of triggering information Technological means solves in the related technology, the not high skill of data transmission credibility in the communication system for having special covering to require Art problem ensure that ensure that the terminal device under low overlay environment can be properly received the data information of base station side The normal communication of the terminal under environment equipment.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is the flow chart according to the transmission method of the downlink data of the embodiment of the present invention 1；

Fig. 2 is another flow chart according to the transmission method of the downlink data of the embodiment of the present invention 1；

Fig. 3 is the structural block diagram according to the transmitting device of the downlink data of the embodiment of the present invention 1；

Fig. 4 is the flow chart according to the method for transmission processing of the downlink data of the embodiment of the present invention 2；

Fig. 5 is another flow chart according to the method for transmission processing of the downlink data of the embodiment of the present invention 2；

Fig. 6 is the structural block diagram according to the transmission processing device of the downlink data of the embodiment of the present invention 2；

Fig. 7 is the pattern schematic diagram according to the enhancing cell reference signals port m of the embodiment of the present invention；

Fig. 8 is start reference symbol when DQPSK being used to encode according to the embodiment of the present invention for the schematic diagram of port m；

Fig. 9 is the pattern schematic diagram according to the enhancing cell reference signals port 0_1 and port 1_1 of the embodiment of the present invention；

Figure 10 is the subframe and transmission carrying user's proprietary data according to the publicly-owned data information of transmission of the embodiment of the present invention The subframe time division multiplexing schematic diagram of information；

Figure 11 is FDD wireless frame structure schematic diagram when being greater than 1 according to the transmission data burst number of the embodiment of the present invention.

Specific embodiment

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.

Embodiment 1

Downlink data transmission method in the present embodiment is applied to base station.Fig. 1 is the lower line number according to the embodiment of the present invention 1 According to transmission method flow chart.As shown in Figure 1, this method comprises:

Step S102 is obtained for triggering the triggering information using specified transmission mode；

Step S104 uses transmission mode corresponding with triggering information to transmit downlink data according to above-mentioned triggering information.

By above-mentioned each processing step, due to selecting corresponding transmission mode according to the triggering information of acquisition, can Flexibly to select the transmission mode of downlink data, the especially communication in the instruction of above-mentioned triggering information according to different triggering information When environment is low overlay environment, it is ensured that terminal is properly received the data of base station transmission, thus reducing base station power to the greatest extent Under the premise of consumption, the normal communication demand of downlink transfer ensure that.

In the present embodiment, above-mentioned triggering information, including but not limited at least one of: it is used for transmission downlink data The quantity of subframe, the type of terminal for receiving downlink data receive transmission indication signaling from upper layer.

So far, above-mentioned implementation process can show as following implementations: Fig. 2 is the downlink according to the embodiment of the present invention 1 Another flow chart of the transmission method of data, as shown in Fig. 2, this method includes

Step S202, base station obtain at least one of information of downlink data to be transmitted: sub-frame number, terminal type Information or transmission indication signaling；

Step S204, base station select data transfer mode according to the above- mentioned information of acquisition；

Step S206, base station send the data according to the transmission mode of selection.

In the present embodiment, there are many determination of amount modes of above-mentioned subframe, such as the downlink data that can be sent Type determine, can also according to terminal send Physical Random Access Channel (Physical Random Access Channel, referred to as PRACH) type determination, following procedure reality can be passed through when according to PRACH type determination number of frames It is existing:

1. determining that data pass when the header type Preamble format of PRACH is the new format format5 of one kind Defeated sub-frame number is greater than 1；

2. when the header type Preamble format of PRACH is format format1, but base station is in specific money Source region (such as the region is one piece of specific time-frequency domain resources to there is the MTC terminal of coverage enhancement demand to reserve) receives It arrives, determines that data transmission number of frames is greater than 1.

In step S104, there is CRS to transmit in subframe and at least one of, for ePDCCH, uses Transmission mode based on CRS transmits downlink data: the quantity of above-mentioned subframe is greater than 1；The type of terminal is specified type；It receives Above-mentioned transmission indication signaling.

In the present embodiment, before transmitting downlink data using the transmission mode based on CRS, need first to distribute transmission money Source, at this point, being that resource allocation unit distribution is used for transmission down with Physical Resource Block (PRB) to the downlink data of ePDCCH carrying The resource of row data.At this point it is possible to which the transmission for above-mentioned downlink data distributes PRB:1 PRB of following one, 2 PRB, 3 PRB, 4 PRB, 6 PRB.

It in the present embodiment, include: use in the control information of ePDCCH when transmitting above-mentioned downlink data using ePDCCH Subframe is repeated in instruction business and control repeats the transmission time interval of subframe, such as can repeat subframe and business weight in control T subframe or radio frames are spaced between the sending time point of multiple subframe, wherein T is 0 or positive integer.

In the present embodiment, there are many methods of determination of the primary sign of ePDCCH, such as can be logical by high-level signaling Know, when no high-level signaling notifies, using initial position predetermined.

Above-mentioned initial position can be selected as any one OFDM symbol, and in the present embodiment, preferably following one is used as Beginning position: the 1st OFDM symbol, the 2nd OFDM symbol, the 3rd OFDM symbol, the 4th OFDM symbol, the 5th OFDM symbol.

In the present embodiment, at least one of, at least two channels are adopted in predefined channel set It is greater than 1 with identical transmission mode: the quantity of subframe；The type of terminal is specified type.

It include but is not limited to following at least two channels in above-mentioned channel set: carrying user's proprietary data information PDSCH, primary synchronization channel, auxiliary synchronization channel, the broadcast channel of PDSCH, the publicly-owned data information of carrying.

In the present embodiment, above-mentioned user's proprietary data information and/or above-mentioned public affairs can be transmitted using following one mode There is data information:

(1) subframe of user's proprietary data information and the subframe of publicly-owned data information are transmitted using time-multiplexed mode；

(2) subframe and user's proprietary data information of the proprietary Downlink Control Information of user are transmitted using time-multiplexed mode PDSCH subframe.

In the present embodiment, when above-mentioned downlink data transmits over multiple subframes, in predetermined period, it is with time domain unit Unit sends downlink data, wherein each time domain unit includes M subframe, and M is positive integer.Above-mentioned predetermined period includes N number of nothing Line frame, N are positive integer；There are one or more for time domain unit position in the predetermined period for sending the downlink data It is a, wherein only to select one of time domain unit position transmission downlink data and each time domain unit position corresponds to extremely A few time domain unit.

In the present embodiment, the quantity for being used for transmission the subframe of above-mentioned user's proprietary data information can be 4 integral multiple. At this point, selection is used for transmission the subframe of user's proprietary data information from following subframe: the 1st subframe, the 2nd subframe, the 3rd subframe, 4th subframe, the 6th subframe, the 7th subframe, the 8th subframe, the 9th subframe.

In the present embodiment, before transmitting downlink data using the transmission mode based on CRS, downlink data can be carried out Coded modulation, such as: at least one of, downlink data is modulated downlink data using DQPSK mode: The quantity of subframe is greater than 1；The type of terminal is specified type；Transmission indication signaling indicating downlink data modulation system be DQPSK。

When being modulated using DQPSK to downlink data, the start reference symbol used includes: predefined value or specifies Pilot tone.The specified pilot tone is used with flowering structure: the resource unit RE that each pilot frequency port is included is occupied in data transfer bandwidth One or more OFDM symbols, each pilot frequency port included RE occupy data transfer bandwidth in part RE at least it One.

It should be noted that the specified type of above-mentioned terminal includes but is not limited at least one of: low cost terminals refer to The terminal for positioning the terminal set, supporting coverage enhancement technology.Wherein, low cost terminals refer to: cost is lower than LTE UE, and function is few In LTE UE or with the terminal of specific function.

A kind of transmitting device of downlink data is additionally provided in the present embodiment, which is applied to base station, for realizing Above-described embodiment and preferred embodiment, the descriptions that have already been made will not be repeated, below to the module being related in the device It is illustrated.As used below, the combination of the software and/or hardware of predetermined function may be implemented in term " module ".Although Device described in following embodiment is preferably realized with software, but the combined realization of hardware or software and hardware And may and be contemplated.Fig. 3 is the structural block diagram according to the transmitting device of the row data of the embodiment of the present invention 1.Such as Fig. 3 institute Show, which includes:

Module 30 is obtained, transmission module 32 is connected to, it is to be passed using specified transmission mode transmission for triggering for obtaining The triggering information of defeated downlink data；

Transmission module 32, for using transmission mode corresponding with triggering information to transmit downlink data according to triggering information.

The function of being realized by above-mentioned modules can be equally low in the communication environment that above-mentioned triggering information indicates with it When overlay environment, it is ensured that terminal is properly received the data of base station transmission, thus before reducing base station power consumption to the greatest extent It puts, ensure that the normal communication demand of downlink transfer

In the present embodiment, above-mentioned acquisition module 30 is believed for obtaining the above-mentioned triggering including at least one of information Breath: it is used for transmission the quantity of the subframe of downlink data, the type of terminal for receiving downlink data, receives from upper layer Transmit indication signaling.

It should be noted that the function that above-mentioned modules are realized can be realized by one or more processors, specifically Quantity can select according to actual needs.

Embodiment 2

The present embodiment is illustrated in terminal side.Fig. 4 is the transmission process side according to the downlink data of the embodiment of the present invention 2 The flow chart of method.As shown in figure 4, this method comprises:

Step S402 is obtained for triggering the triggering information using specified transmission mode；

Step S404 receives above-mentioned downlink data according to transmission mode corresponding with above-mentioned triggering information.

In the present embodiment, above-mentioned triggering information, including at least one of: being used for transmission the number of the subframe of downlink data Amount, receives transmission indication signaling at the type of terminal for receiving downlink data.

So far, above-mentioned implementation process can show as following implementations: Fig. 5 is the downlink according to the embodiment of the present invention 2 Another flow chart of the transmission method of data, as shown in figure 5, this method includes

Step S502, terminal obtain the data information including at least one of information: PRACH type, terminal type, biography Defeated indication signaling；

Step S504, terminal select data information detection mode according to the above-mentioned data information of acquisition；

Step S506, terminal receive the data information according to the Data Detection mode of selection.

In the present embodiment, the quantity for receiving the subframe of above-mentioned downlink data is determined according to the PRACH type that terminal is sent

Have in subframe CRS transmit and at least one of, for ePDCCH, using the transmission based on CRS Mode receives downlink data: the quantity of subframe is greater than 1；The type of terminal is specified type.

Before receiving downlink data using the transmission mode based on CRS, to the downlink data of ePDCCH carrying, with physics Resource block PRB is that resource allocation unit distributes the resource for receiving downlink data.

It in the present embodiment, is to receive downlink data distribution following one PRB:1 by resource allocation unit of PRB PRB, 2 PRB, 3 PRB, 4 PRB, 6 PRB.

In the present embodiment, the starting of ePDCCH receives symbol using the symbol of OFDM corresponding to initial position predetermined Number.Above-mentioned initial position is one of the following: the 1st OFDM symbol, the 3rd OFDM symbol, the 4th OFDM symbol, the 5th OFDM Symbol.

In the present embodiment, at least one of, at least two channels are adopted in the combination of predefined channel It is greater than 1 with identical transmission mode: the quantity of subframe；The type of terminal is specified type；Receive transmission indication signaling.

In the present embodiment, include but is not limited to following at least two channels in above-mentioned channel set: carrying user is proprietary The PDSCH of data information, PDSCH, primary synchronization channel, auxiliary synchronization channel, the broadcast channel for carrying publicly-owned data information.

In the present embodiment, the subframe and the proprietary number of user of publicly-owned data information can be received using time-multiplexed mode It is believed that the subframe of breath；Subframe and the user that the proprietary Downlink Control Information of user can also be received using time-multiplexed mode are proprietary The PDSCH subframe of data information.

When downlink data transmits over multiple subframes, in predetermined period, sent as unit of time domain unit it is described under Row data, wherein each time domain unit includes M subframe, and M is positive integer.Above-mentioned predetermined period includes N number of radio frames, and N is positive Integer；There is one or more in the time domain unit position in above-mentioned predetermined period for sending downlink data, terminal is in time domain Downlink data is detected on cell position and each time domain unit position corresponds at least one described time domain unit.

In the present embodiment, the integral multiple that the quantity for receiving the subframe of user's proprietary data information is 4.

In the present embodiment, the subframe for receiving user's proprietary data information includes at least one of in radio frames Subframe: the 1st subframe, the 2nd subframe, the 3rd subframe, the 4th subframe, the 6th subframe, the 7th subframe, the 8th subframe, the 9th subframe.

Before receiving downlink data using the transmission mode based on CRS, comprising: right at least one of Downlink data demodulates downlink data using DQPSK mode: the quantity of subframe is greater than 1；The type of terminal is specified type； The modulation system for transmitting indication signaling indicating downlink data is DQPSK.

When being demodulated using DQPSK to downlink data, the start reference symbol used includes: predefined value or specifies Pilot tone.The specified pilot tone use with flowering structure: each pilot frequency port is included in RE occupancy data transfer bandwidth one or The RE that multiple OFDM symbols, each pilot frequency port are included occupies at least one of the part RE in data transfer bandwidth.It is above-mentioned Specified pilot tone can be newly-designed pilot configuration, or existing pilot configuration；For the former, pilot frequency sequence be can be A predefined class value.

It should be noted that the specified type of above-mentioned terminal includes but is not limited at least one of: low cost terminals refer to The terminal for positioning the terminal set, supporting coverage enhancement technology.

In the present embodiment, a kind of transmission processing device of downlink data is additionally provided, terminal is applied to, as shown in fig. 6, The device includes:

Module 60 is obtained, receiving module 62 is connected to, for obtaining the triggering letter for being used to trigger using specified transmission mode Breath；

Receiving module 62, for receiving downlink data according to transmission mode corresponding with triggering information.

In the present embodiment, above-mentioned acquisition module 60, for obtaining the triggering information including at least one of information: using In the quantity, the type of terminal for receiving downlink data, the transmission indication signaling received of the subframe of transmission downlink data.

It should be noted that the function that above-mentioned modules are realized can be realized by corresponding processor.

Above-described embodiment in order to better understand, 3-8 is described in detail with reference to embodiments.

Embodiment 3

The present embodiment is to FDD(Frequency Division Duplexing, frequency division duplex) or TDD(Time Division Duplexing, time division duplex) under system, downlink transfer is described in detail using method provided by the present invention Explanation.

It is the type for having coverage enhancement demand that base station is leading according to the PRACH for receiving terminal transmission, obtains transmission data The sub-frame number of information is greater than 1, while knowing that terminal type is predefined type 1, for the terminal for supporting coverage enhancement technology, choosing It selects following transmission modes and sends data information, data information is the service data information being carried on PDSCH channel at this time.It is no Then, it selects the modulation system indicated based on Downlink Control Information to send data, and is based on CRS pilot demodulated.The tool of base station side Body processing step is as shown in Figure 2.

Base station sends service data information using DQPSK modulation system, while using enhancing pilot tone.Enhance pilot tone using new The enhancing cell reference signals of design, use single port and pilot frequency port number for port m.RE of the pilot tone pattern in a PRB It occupies as shown in fig. 7, i.e. port m occupies 12 RE resources of first OFDM symbol of a PRB.Enhance cell ginseng simultaneously It examines signal to transmit in N number of subframe of a radio frames, at this time N=10.

In a PRB, DQPSK encodes used start reference symbol and newly-designed enhancing cell reference is used to believe Number.Modulating-coding sequence can carry out in the way of frequency domain after first time domain.When wherein encoding in a PRB, l indicates one OFDM symbol encodes in RB, and l is [0,13]；K indicates a RB sub-carriers number, and k is [0,11], uses Normal at this time CP.Data symbol indicates that reference signal is indicated with R with X.Shown in coded modulation formula (1) to (4), schematic diagram is as shown in Figure 8.

(1) ignore its amplitude when carrying out publicity expression here, only retaining phase information, (θ indicates phase Position).J indicates imaginary number i.

θ_k(l)=θ_k(l-1)+△θ_k(l), (2) l=1,2...k=1,2...

It is as shown in table 1 that DQPSK encodes used phase code.

Table 1:DQPSK differential phase coding

The pseudo-random sequence that used pilot frequency sequence uses existing protocol to define.Cell is not sent when sending enhancing pilot tone Reference signal.

It is to support the leading of coverage enhancement technology, while terminal type itself is predetermined that terminal, which obtains and sends PRACH type, Adopted Class1 supports the terminal of coverage enhancement technology, following detection modes is selected to receive data information, and data information is at this time The service data information being carried in PDSCH.Otherwise, using the demodulation mode indicated based on Downlink Control Information.Terminal side Processing step is as shown in Figure 4.

Terminal uses DQPSK demodulation mode, while terminal uses non-coherent demodulation mode, and terminal will be small according to enhancing Demodulation primary sign of area's reference signal as DQPSK, port numbers are port m.

Due to using non-coherent demodulation mode at this time, that is, enhance the demodulation starting character that cell reference signals are only used as DQPSK Number, it is not used as demodulated reference signal.

If sending signal is X in a RB_k(l), channel isNoise is N_k(l), then receiving signal can be with It indicates are as follows:

Definition:

Z_k(l)=R_k(l)R_k ^*(l-1)

Using mapping mode described in table 1, coded-bit b_k,l(0)b_k,l(1) corresponding soft decision information is respectively as follows: Re (Z_k(l)), IM (Z_k(l)).The judgment rule of decoder is > 0 at this time, is judged to 1, is otherwise judged to 0.

The present embodiment using enhancing cell reference signals and using DQPSK by compiling in downlink transmission data information Code mode can guarantee MTC terminal device energy and the base station side under low overlay environment under the premise of communication link signal-to-noise ratio is lower Normal communication demand.

Embodiment 4

To under FDD or TDD system, downlink transfer is described in detail the present embodiment using method provided by the present invention It is bright.

It is the type for having coverage enhancement demand that base station is leading according to the PRACH for receiving terminal transmission, obtains transmission data The sub-frame number of information is greater than 1, and specific is to amount to 16 subframes in subframe #1, #2, #3, #4 of continuous 4 radio frames.Choosing It selects following transmission modes and sends data, data information is the service data information being carried on PDSCH channel at this time.Otherwise, it selects It selects the modulation system based on Downlink Control Information instruction and sends data.The specific processing step of base station side is as shown in Figure 2.

Base station sends service data information using DQPSK modulation system, while using existing pilot tone.Pilot tone is joined using cell Signal is examined, uses transmission mode 2 and pilot frequency port number for port0 and 1.

In a PRB, DQPSK encodes used start reference symbol and uses predefined value.Modulating-coding sequence can After according to first time domain in a manner of frequency domain or in the way of time domain after first frequency domain.When wherein being encoded in a PRB, coding Principle is with embodiment 3, and different is that used start reference signal R is predefined as the dibit information of default, preferably It is 01 or 10.DQPSK encodes used phase code as shown in table 1 in embodiment 3.

It is the leading of support coverage enhancement technology that terminal, which obtains and sends PRACH type, and following detection modes is selected to receive numbers It is believed that breath, data information is the service data information being carried in PDSCH at this time.Otherwise, refer to using based on Downlink Control Information The demodulation mode shown.The processing step of terminal side is as shown in Figure 4.

Terminal uses DQPSK demodulation mode, while terminal uses coherent demodulation mode, and the pilot frequency port number used is Port0 and 1.

Due to using coherent demodulation mode at this time, i.e. cell reference signals are used as demodulated reference signal.Terminal is according to relevant The demodulation primary sign of result and predefined DQPSK after demodulation carries out DQPSK demodulation, in demodulation principle and embodiment 3 It is described identical, the difference is that start reference signal R be predefined as default dibit information, preferably 01 or 10.

The present embodiment is by using cell reference signals and using DQPSK coding staff in downlink transmission data information Formula can guarantee that the MTC terminal device under low overlay environment can be normal with base station side under the premise of communication link noise is lower Communication requirement.

Embodiment 5

It is the type for having coverage enhancement demand that base station is leading according to the PRACH for receiving terminal transmission, obtains transmission data The structure that the sub-frame number of information is greater than 1(FDD radio frames at this time may refer to shown in Figure 11), it is specific at continuous 2 Subframe #1, #2, #3, #4, #6, #7, #8, #9 of radio frames amount to 16 subframes.Know that terminal type is predefined type simultaneously 1, for the terminal for supporting coverage enhancement technology, following transmission modes is selected to send data, data information is to be carried at this time Control information on ePDCCH channel.Otherwise, the transmission mode based on the proprietary demodulation pilot tone of user is selected to send ePDCCH.Base station The specific processing step of side is as shown in Figure 2.

Base station sends control information using the transmission mode based on cell reference signals at this time, while using enhancing pilot tone. Enhance pilot tone and use newly-designed enhancing cell reference signals, uses and send diversity transmission mode and pilot frequency port number as port0_ 1port1_1.RE of the pilot tone pattern in a PRB occupies as shown in Figure 9.

The generation of sequence are as follows:

C indicates pseudo-random sequence, and r is the pilot frequency sequence generated according to pseudo-random sequence, and j is imaginary number i.

Sequence to RE resource mapping are as follows:

Indicate pilot frequency port, n_sIndicate time slot；

Mapping position are as follows:

k=6m+(v+v_shift)mod6

Wherein

Indicate physical district ID.Indicate maximum downstream bandwidth RB number.It indicates Downlink bandwidth RB number.Indicate the corresponding OFDM symbol number of a descending time slot.

The value of v is

Enhance cell reference signals simultaneously and transmitted in N number of subframe of a radio frames, N=4 include son when specially FDD Frame #1, #2, #3, #4；N=2 include subframe #4, #9 when uplink-downlink configuration 1 when TDD.

Control information is carried in enhancing Physical Downlink Control Channel, and the channel is excellent using centralization or distributed transmission Select localized transmission.Support that polymerization grade is L=2,4,8,16,24 in 1.4MHz bandwidth for transmission simultaneously.Only support one PRBset, and the PRB number that the set is supported is N=2,4,6.Corresponding search space are as follows:

Wherein case1,2,3 be respectively suitable for MTC UE of coverage enhancement demand, MTC UE without coverage enhancement demand, Other situations.

The PRB set of N=6 when base station side uses Case1 at this time, while using the carrying control information of polymerization grade 24.

In addition, control information includes at least the fixed time interval that control repeats subframe and business repeats subframe.Original transmission Subframe is notified by physical layer signaling, is carried in enhancing host system message block.Original transmission symbol is fixed from the 4th OFDM symbol Start.

It is to support the leading of coverage enhancement technology, while knowing that terminal type is predetermined that terminal, which obtains and sends PRACH type, Adopted Class1 selects following detection modes to receive data information for the terminal for supporting coverage enhancement technology, and data information is at this time The control information being carried in ePDCCH.Otherwise, the transmission mode based on the proprietary demodulation pilot tone of user is selected to demodulate ePDCCH.Eventually The processing step of end side is as shown in Figure 2.

Terminal will be according to enhancing cell reference signals demodulation control information, port numbers port0_1port1_1.

Terminal carries out the demodulation verifying of Candidate Set corresponding to L=4,8,16,24 polymerization grades respectively in search space, obtains To control information.

The present embodiment by downlink transfer control information when, using enhancing cell reference signals, in communication link noise Under the premise of relatively low, it can guarantee that the MTC terminal device under low overlay environment can be with the normal communication demand of base station side.

Embodiment 6

It is the type for having coverage enhancement demand that base station is leading according to the PRACH for receiving terminal transmission, obtains transmission data The sub-frame number of information is greater than 1, and specific is to amount to 8 subframes in subframe #1, #2, #3, #4 of continuous 2 radio frames.Choosing It selects following transmission modes and sends data, data information is the control information being carried on ePDCCH channel at this time.Otherwise, base is selected EPDCCH is sent in the transmission mode of the proprietary demodulation pilot tone of user.The specific processing step of base station side is as shown in Figure 2.

Base station sends control information using the transmission mode based on cell reference signals at this time.Pilot tone is believed using cell reference Number, use pilot frequency port number for port0 and 1.

Control information is carried in enhancing Physical Downlink Control Channel, and the channel is excellent using centralization or distributed transmission Localized transmission is selected, while using the transmission diversity transmission mode based on CRS.Simultaneously in 1.4MHz bandwidth for transmission support with PRB is the polymerization grade of unit, specially L=1,2,3,4,6.Only support a PRB set, and the PRB number that the set is supported For N=2,4,6.Corresponding search space are as follows:

The PRB set of N=4 when base station side uses Case1 at this time, while using the carrying control information of polymerization grade 2.

In addition, original transmission symbol is fixed since the 4th OFDM symbol.

It is to support the leading of coverage enhancement technology, while knowing that terminal type is predetermined that terminal, which obtains and sends PRACH type, Adopted Class1 selects following detection modes to receive data information for the terminal for supporting coverage enhancement technology, and data information is at this time The control information being carried in ePDCCH.Otherwise, the transmission mode based on the proprietary demodulation pilot tone of user is selected to demodulate ePDCCH.Eventually The processing step of end side is as shown in Figure 4.

Terminal will demodulate control information according to cell reference signals in a manner of transmission diversity, and port numbers are port0 and 1.

Terminal carries out the demodulation verifying of Candidate Set corresponding to L=1,2,3,4,6 polymerization grades respectively in search space, obtains To control information.

The present embodiment is by using cell reference signals, applying small bandwidth communication when downlink transfer controls information Under the premise of, it can guarantee that the MTC terminal device of low cost can be with the normal communication demand of base station side.

Embodiment 7

It is the type for having coverage enhancement demand that base station is leading according to the PRACH for receiving terminal transmission, obtains transmission data The sub-frame number of information is greater than 1, specifically are as follows: sends out in the control information for carrying out 4 time domain units as the period using N number of radio frames It send.Each time domain unit includes continuous M subframe, and N, M are positive integer.N is 20, M 4 in this embodiment.Select following biographies Defeated mode sends data, and data information is the control information being carried on ePDCCH channel at this time.Otherwise, selection is special based on user There is the transmission mode of demodulation pilot tone to send ePDCCH.The specific processing step of base station side is as shown in Figure 2.

In addition, original transmission symbol is fixed since the 4th OFDM symbol.

Terminal is received in the control information for carrying out 4 time domain units as the period using 20 radio frames, first out of period Radio frames start, and successively carry out the control information blind Detecting of 4 time domain units, and each time domain unit includes continuous 4 subframes, It detects 10 times in total.Subframe #1,2,3,4 and subframe #6,7,8,9 of the 1st radio frames of i.e. terminal the 1st time detection and the 2nd Subframe #1,2,3,4 and subframe #6,7,8,9 of radio frames, stop if detection is correct it is incorrect if continue the 2nd inspection It surveys.The subframe #1 of subframe #1,2,3,4 and subframe #6,7,8,9 of the 3rd radio frames of 2nd detection and the 4th radio frames, 2, 3,4 and subframe #6,7,8,9, at most detection is to the 10th time if still detecting mistake.

Terminal carries out the demodulation verifying of Candidate Set corresponding to L=1,2,3,4,6 polymerization grades respectively in search space, obtains To control information.Or fixation is detected with L=2.

Embodiment 8

Base station issues the transmission indication signaling of physical layer according to upper layer, and following transmission modes is selected to send data, at this time when When data information is control information and is carried on ePDCCH channel, the transmission mode based on cell reference signals is selected to send Otherwise ePDCCH selects the transmission mode based on the proprietary demodulation pilot tone of user to send ePDCCH；When data information is business datum Information and when being carried on PDSCH channel, selection is transmitted based on DQPSK modulation system, and otherwise, selection is based on QPSK modulation methods Formula transmission.The specific processing step of base station side is as shown in Figure 2.

At this time from the point of view of frame structure, publicly-owned information occupies in each radio frames in cell subframe be k1, k2 ..., kn It is a, data burst and control subframe each wireless frame period occupy x1, x2 ..., xn, as shown in Figure 10.It is spaced at every section Xi, i=1,2 ..., in n subframe, the subframe of carrying ePDCCH channel occupies yi, and the subframe of carrying PDSCH channel occupies zi It is a, and meet xi >=yi >=0, xi >=zi >=0.

Base station sends ePDCCH using the transmission mode based on cell reference signals at this time.Pilot tone is believed using cell reference Number, it uses the transmission mode for sending diversity and pilot frequency port number is port0 and 1.Base station is sent using DQPSK modulation system PDSCH, while cell reference signals are used, use transmission mode 1 and pilot frequency port number for port0.

In a PRB, business information is modulated after channel coding using DQPSK, encodes used start reference Symbol uses predefined value.Modulating-coding sequence can be in the way of frequency domain after first time domain or according to time domain after first frequency domain Mode.When wherein encoding in a PRB, for coding principle with embodiment 3, different is used start reference signal R Be predefined as default dibit information, preferably 01 or 10.DQPSK is encoded in used phase code such as embodiment 3 Shown in table 1.

Control information is carried in enhancing Physical Downlink Control Channel, and the channel is excellent using centralization or distributed transmission Select localized transmission.Simultaneously in 1.4MHz bandwidth for transmission support by PRB as unit of polymerization grade, specially L=1,2,3,4, 6.Only support a PRB set, and the PRB number that the set is supported is N=2,4,6.Corresponding search space are as follows:

The PRB set of N=6 when base station side uses Case1 at this time, while using the carrying control information of polymerization grade 6.

In addition, original transmission symbol is fixed since the 4th OFDM symbol.

Meanwhile controlling information includes the fixed time interval T that instruction control repetition subframe and business repeat subframe, T=0, i.e. data And then sub-frame transmission initial position controls subframe.

It is to support the leading of coverage enhancement technology, while knowing that terminal type is predetermined that terminal, which obtains and sends PRACH type, Adopted Class1 selects following detection modes to receive data information, works as data information at this time for the terminal for supporting coverage enhancement technology When to control information and be carried on ePDCCH channel, the transmission mode based on cell reference signals is selected to demodulate ePDCCH, Otherwise, the transmission mode based on the proprietary demodulation pilot tone of user is selected to demodulate ePDCCH；When data information be service data information simultaneously And when being carried on PDSCH channel, selection is transmitted based on DQPSK modulation system, and otherwise, selection is passed based on QPSK modulation system It is defeated.The processing step of terminal side is as shown in Figure 4.

Terminal will demodulate ePDCCH according to cell reference signals in a manner of transmission diversity, and port numbers are port0 and 1.

Terminal carries out the demodulation verifying of Candidate Set corresponding to L=1,2,3,4,6 polymerization grades respectively in search space, obtains To control information.After obtaining control information, know that data burst will be spaced T sub-frame transmission after controlling subframe, at this time T=0.

Terminal demodulates PDSCH using DQPSK demodulation mode, while terminal uses non-coherent demodulation mode.

Due to using non-coherent demodulation mode at this time, i.e. cell reference signals are not used as demodulated reference signal.Terminal according to The demodulation primary sign of predefined DQPSK carries out DQPSK demodulation, and demodulation principle is identical as described in embodiment 3, difference Be start reference signal R be predefined as default dibit information, preferably 01 or 10.

The present embodiment transmits Downlink Control Information and service data information by time division multiplexing mode, is believed using cell reference Number, under the premise of application small bandwidth communication, it can guarantee that the MTC terminal device of low cost can be needed with the normal communication of base station side It asks.

Embodiment 9

It is the type for having coverage enhancement demand that base station is leading according to the PRACH for receiving terminal transmission, obtains transmission data The sub-frame number of information is specifically total for subframe #1, #2, #3, #4, #6, #7, #8, #9 in continuous 10 radio frames greater than 1 Count 80 subframes.Each radio frames schematic diagram is as shown in Figure 10.Following transmission modes are selected to send data, data information is at this time The control information being carried on ePDCCH channel.Otherwise, the transmission mode based on the proprietary demodulation pilot tone of user is selected to send ePDCCH.The specific processing step of base station side is as shown in Figure 2.

In a PRB, control information is modulated after channel coding using DQPSK, encodes used start reference Symbol uses predefined value.Modulating-coding sequence can be in the way of frequency domain after first time domain or according to time domain after first frequency domain Mode.When wherein encoding in a PRB, for coding principle with embodiment 3, different is used start reference signal R Be predefined as default dibit information, preferably 01 or 10.

Base station sends control information using the transmission mode based on CRS.Pilot tone uses cell reference signals, using pilot tone end Slogan is port0 and 1.And it controls information and uses DQPSK modulation system.

The PRB set of N=6 when base station side uses Case1 at this time, while using the carrying control information of polymerization grade 2.

In addition, original transmission symbol is fixed since the 4th OFDM symbol.

Terminal uses DQPSK demodulation mode, while terminal uses non-coherent demodulation mode.

Due to using non-coherent demodulation mode at this time, i.e., without using cell reference signals as demodulated reference signal.Terminal DQPSK demodulation is carried out according to the demodulation primary sign of predefined DQPSK.Demodulation principle is the same as 3 institute of embodiment in a PRB State, the difference is that start reference signal R be predefined as default dibit information, preferably 01 or 10.

The present embodiment before the small bandwidth of application by using cell reference signals, communicating when downlink transfer controls information Put, can guarantee low cost MTC terminal device can and base station side normal communication demand.

It can be seen from above-described embodiment that the embodiment of the present invention realize it is following the utility model has the advantages that

It can guarantee that the terminal device being deployed under low overlay environment can be properly received base station side data information and control letter Breath, under the premise of operator does not increase and disposes the high capital equipments such as additional website, relay station, reduction continues to repeat transmission time Several and bring energy expense improves downlink resource service efficiency, guarantees such terminal device normal communication.

In another embodiment, a kind of software is additionally provided, the software is for executing above-described embodiment and preferred reality Apply technical solution described in mode.

In another embodiment, a kind of storage medium is additionally provided, above-mentioned software is stored in the storage medium, it should Storage medium includes but is not limited to: CD, floppy disk, hard disk, scratch pad memory etc..

Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.

These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of transmission method of downlink data is applied to base station characterized by comprising

It obtains for triggering the triggering information using specified transmission mode, wherein the triggering information includes at least: being used for transmission The quantity of the subframe of the downlink data；

Downlink data is transmitted using transmission mode corresponding with the triggering information according to the triggering information；

It is described that the downlink data, packet are transmitted using transmission mode corresponding with the triggering information according to the triggering information It includes:

The subframe and the lower line number of the publicly-owned data information for including in the downlink data are transmitted using time-multiplexed mode The subframe for the user's proprietary data information for including in；And/or

The use for including in the subframe and the downlink data of the proprietary Downlink Control Information of user is transmitted using time-multiplexed mode The PDSCH subframe of family proprietary data information.

2. the method according to claim 1, wherein the triggering information, further includes at least one of:

For receiving the type of the terminal of the downlink data, receiving the transmission indication signaling from upper layer.

3. the method according to claim 1, wherein the physical accidental that the quantity of the subframe is sent according to terminal Channel type is accessed to determine.

4. according to the method described in claim 2, it is characterized in that, being used and the triggering information pair according to the triggering information The transmission mode answered transmits the downlink data, comprising:

There is CRS to transmit in subframe and at least one of, for the Physical Downlink Control Channel ePDCCH of enhancing, Transmit the downlink data using the transmission mode based on CRS: the quantity of the subframe is greater than 1；The type of the terminal is to refer to Determine type；Receive the transmission indication signaling.

5. according to the method described in claim 4, it is characterized in that, transmitting the lower line number using the transmission mode based on CRS According to before, comprising:

To the downlink data of ePDCCH carrying, it is used for transmission by resource allocation unit distribution of Physical Resource Block PRB The resource of the downlink data.

6. according to the method described in claim 5, it is characterized in that, being under transmission is described by resource allocation unit of the PRB Row data distribute following one PRB:

1 PRB, 2 PRB, 3 PRB, 4 PRB, 6 PRB.

7. according to the method described in claim 4, it is characterized in that, including: to be used to indicate in the control information of the ePDCCH Business repeats subframe and control repeats the transmission time interval of subframe.

8. according to the method described in claim 4, it is characterized in that, the starting OFDM symbol of the ePDCCH is in no high-rise letter Initial position predetermined is used when enabling configuration.

9. according to the method described in claim 4, it is characterized in that, the starting OFDM symbol of the ePDCCH is one of the following:

1st OFDM symbol, the 2nd OFDM symbol, the 3rd OFDM symbol, the 4th OFDM symbol, the 5th OFDM symbol.

10. according to the method described in claim 2, it is characterized in that, being used and the triggering information according to the triggering information Corresponding transmission mode transmits the downlink data, comprising:

In at least one of, at least two channels use identical transmission mode in predefined channel set: The quantity of the subframe is greater than 1；The type of the terminal is specified type；Receive the transmission indication signaling.

11. according to the method described in claim 10, it is characterized in that, in the predefined channel set include it is following at least Two channels:

Carry the Physical Downlink Shared Channel PDSCH of user's proprietary data information, the PDSCH of the publicly-owned data information of carrying, master together Walk channel, auxiliary synchronization channel, broadcast channel.

12. according to the method described in claim 2, it is characterized in that, when the downlink data transmits over multiple subframes, pre- If in the period, the downlink data is sent as unit of time domain unit, wherein each time domain unit includes M subframe, M For positive integer.

13. method according to claim 12, which is characterized in that the predetermined period includes N number of radio frames, and N is positive integer； There is one or more in the time domain unit position in the predetermined period for sending the downlink data, wherein only select One of them described time domain unit position sends the downlink data and each time domain unit position corresponds at least one The time domain unit.

14. the method according to claim 1, wherein being used for transmission the subframe of user's proprietary data information Quantity be 4 integral multiple.

15. according to the method for claim 14, which is characterized in that it is special to be used for transmission the user for selection from following subframe There is the subframe of data information:

1st subframe, the 2nd subframe, the 3rd subframe, the 4th subframe, the 6th subframe, the 7th subframe, the 8th subframe, the 9th subframe.

16. according to the method described in claim 2, it is characterized in that, transmitting the lower line number using the transmission mode based on CRS According to before, comprising: at least one of, use differential quadrature phase keying (DQPSK) DQPSK mode to the downlink data The downlink data is modulated:

The quantity of the subframe is greater than 1；The type of the terminal is specified type；The transmission indication signaling indicates the downlink The modulation system of data is DQPSK.

17. according to the method for claim 16, which is characterized in that carried out using the DQPSK to the downlink data When modulation, the start reference symbol used includes: predefined value or specified pilot tone.

18. according to the method for claim 17, which is characterized in that the specified pilot tone is used with flowering structure:

Resource unit RE that each pilot frequency port is included occupies one or more OFDM symbols in data transfer bandwidth, each The RE that pilot frequency port is included occupies at least one of the part RE in data transfer bandwidth.

19. the method according to any one of claim 4,10 and 16, which is characterized in that the specified type includes following At least one:

Low cost terminals, the terminal of designated position, the terminal for supporting coverage enhancement technology.

20. a kind of method for transmission processing of downlink data is applied to terminal characterized by comprising

It obtains for triggering the triggering information using specified transmission mode, wherein the triggering information includes at least: physical accidental Access channel PRACH type；

The quantity for receiving the subframe of the downlink data is determined according to the Physical Random Access Channel PRACH type；

The downlink data is received according to transmission mode corresponding with the triggering information；

It is described to receive the downlink data, including following one according to transmission mode corresponding with the triggering information:

The subframe and the lower line number of the publicly-owned data information for including in the downlink data are received using time-multiplexed mode The subframe for the user's proprietary data information for including in；And/or

The use for including in the subframe and the downlink data of the proprietary Downlink Control Information of user is received using time-multiplexed mode The PDSCH subframe of family proprietary data information.

21. according to the method for claim 20, which is characterized in that the triggering information, further includes at least one of:

The type of the terminal receives transmission indication signaling.

22. according to the method for claim 21, which is characterized in that connect according to transmission mode corresponding with the triggering information Receive the downlink data, comprising:

23. according to the method for claim 22, which is characterized in that receive the downlink using the transmission mode based on CRS Before data, comprising:

To the downlink data of ePDCCH carrying, distribute by resource allocation unit of Physical Resource Block PRB for receiving The resource of the downlink data.

24. according to the method for claim 23, which is characterized in that described in being reception by resource allocation unit of the PRB Downlink data distributes following one PRB:

1 PRB, 2 PRB, 3 PRB, 4 PRB, 6 PRB.

25. according to the method for claim 22, which is characterized in that the starting OFDM symbol of the ePDCCH is in no high level Initial position predetermined is used when signal deployment.

26. according to the method for claim 22, which is characterized in that the starting OFDM symbol of the ePDCCH be it is following it One:

27. according to the method for claim 21, which is characterized in that connect according to transmission mode corresponding with the triggering information Receive the downlink data, comprising:

In at least one of, at least two channels use identical transmission mode in predefined channel set: The quantity of the subframe of the downlink data is greater than 1；The type of the terminal is specified type；Receive the transmission instruction letter It enables.

28. according to the method for claim 27, which is characterized in that include following at least two letter in the channel set Road:

29. according to the method for claim 21, which is characterized in that when the downlink data transmits over multiple subframes, In predetermined period, the downlink data is sent as unit of time domain unit, wherein each time domain unit includes M subframe, M is positive integer.

30. according to claim 29 the method, which is characterized in that the predetermined period includes N number of radio frames, and N is positive integer； There is one or more in the time domain unit position in the predetermined period for sending the downlink data, terminal is when described The downlink data is detected on the cell position of domain and each time domain unit position corresponds at least one described time domain unit.

31. according to the method for claim 20, which is characterized in that for receiving the subframe of user's proprietary data information Quantity be 4 integral multiple.

32. according to the method for claim 31, which is characterized in that selected from following subframe special for receiving the user There is the subframe of data information:

33. according to the method for claim 21, which is characterized in that receive the downlink using the transmission mode based on CRS Before data, comprising: at least one of, use the differential quadrature phase keying (DQPSK) side DQPSK to the downlink data Formula demodulates the downlink data:

The quantity of the subframe of the downlink data is greater than 1；The type of the terminal is specified type；The transmission indication signaling refers to The modulation system for showing the downlink data is DQPSK.

34. according to the method for claim 33, which is characterized in that carried out using the DQPSK to the downlink data When demodulation, the start reference symbol used includes: predefined value or specified pilot tone.

35. according to the method for claim 34, which is characterized in that the specified pilot tone is used with flowering structure:

36. the method according to any one of claim 22,27 and 33, which is characterized in that the specified type include with It is at least one lower:

37. a kind of transmitting device of downlink data is applied to base station characterized by comprising

Module is obtained, for obtaining the triggering information for being used to trigger using specified transmission mode, wherein the acquisition module is used for It obtains the triggering information for including at least following information: being used for transmission the quantity of the subframe of the downlink data；

Transmission module, for transmitting the downlink using transmission mode corresponding with the triggering information according to the triggering information Data；

38. the device according to claim 37, which is characterized in that the acquisition module, be also used to obtain include with down toward The triggering information of one of few information:

39. a kind of transmission processing device of downlink data is applied to terminal characterized by comprising

Module is obtained, for obtaining the triggering information for being used to trigger using specified transmission mode, wherein the acquisition module is used for Obtain the triggering information for including at least following information: Physical Random Access Channel PRACH type；

Receiving module, for receiving the downlink data according to transmission mode corresponding with the triggering information；

40. device according to claim 39, which is characterized in that the acquisition module, be also used to obtain include with down toward The triggering information of one of few information:

The type of the terminal, the transmission indication signaling received.