CN103220796A - Downlink transmission method and device thereof - Google Patents

Abstract

The invention discloses a downlink transmission method and a device thereof. The method is applied to an LTE system, at least one downlink data transmission band is configured in a data field of a downlink system working band of the downlink data transmission band, and the band width of the downlink data transmission band is smaller than the band width occupied by a control channel area of the LTE system. The method comprises the steps of enabling a network device to control the downlink control channel in the control area through the LTE system to sending a control signaling to a terminal, and scheduling the terminal to transmit downlink data in the downlink data transmission band; and enabling the network device to carry out data transmission on the terminal on the downlink data transmission band. The downlink transmission method can reduce the data transmission band width of the terminal and consider compactness of the control channel while reducing cost of the terminal.

Description

A kind of downlink data transmission method and equipment thereof

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of downlink data transmission method and equipment thereof.

Background technology

Technology of Internet of things is in the ascendant, 3-G (Generation Three mobile communication system) with and long evolving system (Long Term Evolution needs to support MTC (Machine Type Communications, the communication of machine type) function in LTE).MTC is as a kind of novel communication theory, its objective is that the communication technology with number of different types organically combines, as: machine is to machine communication, machine control communication, man-machine interaction communication, mobile interconnected communication, thus the development of promotion social production and life style.

Current mobile communications network is at interpersonal design of communication, as determining etc. of: network capacity.

Some characteristics that the current MTC communication of recognizing may exist have:

-MTC terminal (or claiming the M2M terminal) has Hypomobility;

The time that-MTC terminal and network side carry out transfer of data is controlled; Be that the MTC terminal can only insert in the time period of network appointment;

The transfer of data that-MTC network and network side carry out is less demanding to real-time to transfer of data, has the time tolerance that is:;

-MTC terminal energy constraint requires extremely low power consumption;

Only carry out the message transmission of small data quantity between-MTC terminal and the network side;

-MTC terminal can be that unit manages with the group.

The MTC terminal of a reality can have above-mentioned one or more characteristics.

Existing LTE system bandwidth has following several shown in the table 1:

Table 1

Channel width (MHz)	1.4	3	5	10	15	20
							Transmission bandwidth configuration (RB number)	6	15	25	50	75	100

The LTE downlink resource distributes type to have three kinds at present: Resource allocation type 0/1/2.

Resource allocation type 0 (resource allocation type 0), available resources in the system bandwidth are divided into RBG (Resource Block Group, the Resource Block group), each RBG is by P continuous VRBs (Virtual Resource Block, virtual resource blocks) of localized type constitutes, and the size of P is determined by system bandwidth: the group number of RBG

The last use of PDCCH N _RBGWhether individual bit utilizes the mode of bitmap to indicate each RBG occupied, as shown in table 1.

Table 1

Resource allocation type 1 (resource allocation Class1) adopts in a like fashion with resource allocation type0 resource is divided into RBG.Further, with N _RBGIndividual RBG is divided into P subclass, RBG subset p correspondence with p be initial P be the interval RBG (0≤p＜P), as shown in Figure 1.ENB is by the situation that takies of VRBs in PDCCH ((Physical Downlink Control Channel, Physical Downlink Control Channel)) indication RBG subclass and the subclass.Wherein, VRB takies the mode addressing of using bitmap, and scope that can addressing is the part bandwidth, from Δ _Shift(p) beginning.Δ _Shift(p) value has two kinds of possibilities, and the bit number that is taken by the last RB resource indication information of the indication of 1 bit on PDCCH PDCCH is the same with resource allocation type0, is N also _RBGComprise:

The indication of RBG subclass, by

Bit is indicated;

1 bit indicates whether skew: value is 0 corresponding Δ _Shift(p)=0; Value is 1 correspondence ${\mathrm{\&Delta;}}_{\mathrm{shift}}\left(p\right)=N_{\mathrm{RB}}^{\mathrm{RBGsubset}}\left(p\right)-{\mathrm{<figure-callout\; id="1"\; label="N\; RB\; TYPE"\; filenames="HDA0000132934390000011.png"\; state="\{\{state\}\}">N</figure-callout>}}_{\mathrm{RB}\mathrm{TYPE}}^1;$

VRB of localized type in the bit addressing RBG subclass,

In i

Individual bit is indicated in this RBG group from Δ _Shift(p) Kai Shi i VRB, corresponding VRB is numbered:

Among the Resource allocation type 2 (resource allocation type 2), that the PDCCH indication distributes is continuous localized VRB (centralized VRB) or distributed VRB (distributed VRB).The Localized/Distributed VRB assignment flag that 1bit is arranged on the DCI form 1A/1B/1D; When using PDCCH DCI form 1C, fixed allocation distributed VRB.For PDCCH DCI form 1A, 1B or 1D, one section continuous VRB resource allocation is indicated by the resource indication value (RIV) on the PDCCH, RIV and initial RB (RBstart) and continuous dispensing VRB length L _CRBsRelation as follows:

Wherein, L _CRBs〉=land shall not exceed

(be L _CRBs〉=1 and be no more than

).

For PDCCH DCI form 1C, the VRB resource allocation on PDCCH indicating mode and above similar, wherein,

$L_{\mathrm{CRBs}}=N_{\mathrm{RB}}^{\mathrm{step}},$

Wherein, $L_{\mathrm{CRBs}}^{\&prime;}=L_{\mathrm{CRBs}}/N_{\mathrm{RB}}^{\mathrm{step}},$ ${\mathrm{RB}}_{\mathrm{start}}^{\&prime;}={\mathrm{RB}}_{\mathrm{start}}/N_{\mathrm{RB}}^{\mathrm{step}},$

The money map source of uplink/downlink control channel all is based on the system bandwidth design in the existing LTE system, thus the bandwidth of operation of terminal need at least more than or equal to the system works bandwidth just can be in the LTE network operate as normal.For the LTE terminal can be roamed in the network under the various band width configuration and switch, require the bandwidth of LTEUE (User Equipment, terminal) to be at least 20MHz at present.

MTC equipment after considering in the little bandwidth system communication can be very huge, and the function of most occasion MTC equipment is single relatively, does not need very high transmission rate, needs therefore to consider that the cost to MTC equipment further reduces.

Bandwidth is the key factor that influences the MTC equipment cost, present LTE system requirements, and all terminals must be supported the system bandwidth of 20MHz, but as if the bandwidth of operation that can suitably reduce based on the MTC terminal equipment of LTE system, can significantly reduce cost.But the problem that reduction UE terminal bandwidth is brought is, because the wide mapping of down control channel filled band, therefore UE can't effectively read down control channel, up PUCCH (the Physical Uplink Control CHannel that also can't on up full bandwidth, carry out, physical uplink control channel) feedback, thus brought control channel compatibility issue and with the coexistence problems of conventional terminal.

Summary of the invention

The embodiment of the invention provides a kind of downlink data transmission method and equipment thereof, in order to the reduction terminal bandwidth, and is implemented in the compatibility of taking into account control channel when reducing the terminal cost.

The downlink data transmission method that the embodiment of the invention provides, be applied to the LTE system, dispose at least one downlink data transmission frequency band in the data field of the downlink system working band of described LTE system, and the bandwidth of each downlink data transmission frequency band is less than the LTE system shared bandwidth in control channel zone, and this method comprises:

The network equipment sends control signaling to terminal by the down control channel in the territory, LTE system control area, carries out downlink data transmission with dispatch terminal in described downlink data transmission frequency band;

The described network equipment carries out transfer of data to the terminal on this downlink data transmission frequency band in described downlink data transmission frequency band.

The downlink data transmission method that another embodiment of the present invention provides, be applied to the LTE system, dispose at least one downlink data transmission frequency band in the data field of the downlink system working band of described LTE system, and the bandwidth of each downlink data transmission frequency band is less than the LTE system shared bandwidth in control channel zone, and this method comprises:

Terminal receives the control signaling that the network equipment sends by the down control channel in the territory, LTE system control area;

Described terminal on the downlink data transmission frequency band of described terminal, receives the downlink data that the network equipment sends according to described control signaling.

The network equipment that the embodiment of the invention provides, be applied to the LTE system, dispose at least one downlink data transmission frequency band in the data field of the downlink system working band of described LTE system, and the bandwidth of each downlink data transmission frequency band is less than the LTE system shared bandwidth in control channel zone, and this network equipment comprises:

Transmission control module is used for the down control channel by territory, LTE system control area, sends control signaling to terminal, carries out downlink data transmission with dispatch terminal in described downlink data transmission frequency band;

Data transmission module is used in described downlink data transmission frequency band the terminal on this downlink data transmission frequency band being carried out transfer of data.

The terminal equipment that the embodiment of the invention provides, be applied to the LTE system, dispose at least one downlink data transmission frequency band in the data field of the downlink system working band of described LTE system, and the bandwidth of each downlink data transmission frequency band is less than the LTE system shared bandwidth in control channel zone, and this terminal equipment comprises:

The control information acquisition module is used for receiving the control signaling of the network equipment by the down control channel transmission in territory, LTE system control area;

Data transmission module is used for according to described control signaling, on the downlink data transmission frequency band of described terminal, receives the downlink data that the network equipment sends.

The above embodiment of the present invention, by in system's full bandwidth scope, carrying out the down control channel transmission, in less than system bandwidth, carry out downlink data transmission, thereby the down control channel of maximum compatible conventional terminal design, do not need to redesign descending control area, when reducing terminal bandwidth, reduce influence to existing standard.

Description of drawings

Fig. 1 is the schematic diagram of Resource allocation type 0﹠1 in the prior art;

One of schematic flow sheet of the downlink data transmission that Fig. 2 provides for the embodiment of the invention;

Two of the schematic flow sheet of the downlink data transmission that Fig. 3 provides for the embodiment of the invention;

The structural representation of the network equipment that Fig. 4 provides for the embodiment of the invention;

The structural representation of the terminal equipment that Fig. 5 provides for the embodiment of the invention.

Embodiment

For the realization principle and the technique effect of the clearer explanation embodiment of the invention, at first the existing relevant regulations of marking PRACH (Physical Random Access Channel, Physical Random Access Channel) resource location is described below.

A PRACH channel accounts for 6 PRB resources in the LTE system.Adopt Format 0～3 o'clock, subcarrier spacing is 1.25KHz, and 1 PRACH channel comprises 864 subcarriers (1.08MHz), and length is on 839 subcarriers in the middle of 839 preamble (leading) sequence is mapped to.Adopt Format4 (only to be used for TDD (Time Division Duplexing, time division duplex) in the time of system), subcarrier spacing is 7.5KHz, and 1 PRACH channel comprises 144 subcarriers (1.08MHz), and length is on 139 subcarriers in the middle of 139 preamble sequence is mapped to.The shared running time-frequency resource of PRACH is determined by eNB (enode b, i.e. base station), and notifies UE by system message.

The LTE-FDD system, owing to adopt the TYPE1 frame structure, the sub-frame of uplink number is definite and abundant in the 10ms radio frames, the transmission of PRACH is not subjected to the restriction of frame structure, can initiate in the subframe arbitrarily.Allow to send a PRACH in each sub-frame of uplink at most, promptly PRACH only distinguishes by time domain, and does not distinguish by frequency domain, and first can be used for the call number of the Physical Resource Block of PRACH

Be defined as

Parameter wherein For being disposed by higher level parameters prach-FrequencyOffset, span is: $0\&le;n_{\mathrm{PRBoffset}}^{\mathrm{RA}}\&le;N_{\mathrm{RB}}^{\mathrm{UL}}-6.$

The TD-LTE system, because the restriction of time division duplex characteristic, different uplink-downlink configuration causes one, and the sub-frame of uplink number in the radio frames is uncertain and number is few.In order to guarantee that under sub-frame of uplink situation on the low side UE sends the real-time of PRACH, allows a subframe to send a plurality of PRACH, i.e. the transmission of PRACH need be carried out the running time-frequency resource mapping.The running time-frequency resource mapping ruler is: distribute on time domain earlier, if the time-domain resource scarcity considers to place a plurality of PRACH again on frequency domain.The configuration of PRACH is by one group of parameter

Indicate.Wherein, f _RABe the frequency resource sequence number, the frequency domain resource that is used for calculating PRACH takies.

For preamble format 0-3:

For preamble format 4:

$n_{\mathrm{PRB}}^{\mathrm{RA}}=\left\{\begin{array}{cc}{6f}_{\mathrm{RA}},& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^{\left(1\right)})\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="HDA0000132934390000011.png"\; state="\{\{state\}\}">mod</figure-callout>}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-6(f_{\mathrm{RA}}+1),& \mathrm{otherwise}\end{array}\right.$

Wherein, n _fBe System Frame Number, N _SPIt is the number of ascending-descending subframes switching point in the radio frames.

The PRACH resource of format0-3 is the Resources allocation successively of bilateral mapping, is monolateral mapping for Format 4.

From above-mentioned analysis as can be known, in the LTE system, the PRACH channel may be distributed on 6 continuous arbitrarily in system bandwidth PRB resources.

Learn through investigation, the bandwidth of operation of UE is more than or equal to 20MHz or lower, radio-frequency devices cost to UE does not have influence substantially, but device cost such as A/D (mould/number), D/A (D/A) transducer and baseband processor, just relatively closer with the relation of bandwidth, reduce bandwidth and can effectively reduce above-mentioned device cost.

Based on above analysis, the scheme of at present potential reduction bandwidth has following two kinds:

Scheme 1: radio frequency reduces the mode of bandwidth

Under this scheme, terminal adopts the narrower radio-frequency devices of bandwidth, such as the filter, power amplifier, transceiver, the duplexer (or switch) (following is example with bandwidth 5MHz) that adopt the maximum 5MHz of support amount of bandwidth.By adopting the narrower filter of bandwidth, only the useful signal in the leaching and the little bandwidth terminals bandwidth of sampling has reduced the demand to buffer memory, and after reducing bandwidth, under the prerequisite of speed that fully satisfies M2M communication and delay requirement, also reduced the sampling rate requirement of ad/da converter; And FFT (fast Fourier) conversion, channel estimating, channel equalization and input and HARQ (the Hybrid Automatic Repeat Request of Base-Band Processing part, mix automatic repeat requests) processing also along with the reduction of bandwidth is able to effective reduction, further reduce the Base-Band Processing device conversion speed of UE and the demand of HARQ buffer memory device, thereby effectively reduce cost.

Scheme 2: radio frequency bandwidth does not reduce, the mode that the bandwidth of Base-Band Processing part reduces

Because bandwidth does not have influence for the cost of UE radio frequency part, so this programme proposes not reduce the bandwidth of UE radio-frequency devices, only reduce the bandwidth of UE Base-Band Processing part, promptly reduce the bandwidth of the parts such as processing of ad/da converter, FFT conversion, channel estimating, channel equalization and input and HARQ, this scheme can be obtained the approximate effect that reduces cost with scheme 1 substantially.A kind of scheme of enhancing has also been proposed on this basis, promptly wish to obtain the frequency selectivity gain of descending scheduling, if so, then the Subframe cache size of terminal, AD sampling bandwidth, FFT Size then can't reduce bandwidth of operation, thereby, there is certain cost to increase than scheme 1.

Though can comparatively effectively reduce the cost of terminal in the such scheme 1, some significant disadvantage are arranged:

(1) down control channel and ascending control channel and existing LTE system are incompatible;

(2) if design ascending control channel separately, a kind of possible scheme is to carry out the uplink feedback channel design at little bandwidth frequency band according to the design of the existing up PUCCH of LTE.But this kind mode can be brought serious resource fragmentation problem to conventional terminal, when the medium and small bandwidth terminals of system exists, tradition LTE UE (conventional terminal need have the single carrier emission characteristics) can't dispose the resource of full bandwidth and carry out the business transmission, thereby can't obtain higher peak rate;

(3) because existing LTE standard to the position regulation of PRACH resource, can appear at the optional position of system uplink frequency range, then reduce bandwidth after, the up PRACH of terminal sends and can not design based on existing standard, has compatibility issue.

Though can comparatively effectively reduce the cost of terminal in the such scheme 2, also there is comparatively significant disadvantages, be divided into following two kinds of situations:

Situation A: do not consider the frequency selectivity gain, then can obtain the effect that reduces cost that is similar to scheme 1 substantially, but the shortcoming of this scheme is similar with scheme 1 in such cases:

(1) down control channel and ascending control channel and existing LTE system are incompatible;

(2) if this kind scheme designs ascending control channel separately, a kind of possible scheme is to carry out the uplink feedback channel design at little bandwidth frequency band according to the design of the existing up PUCCH of LTE.But this kind mode can be brought serious resource fragmentation problem to conventional terminal, when the medium and small bandwidth terminals of system exists, tradition LTE UE (conventional terminal need have the single carrier emission characteristics) can't dispose the resource of full bandwidth and carry out the business transmission, thereby can't obtain higher peak rate;

(3) because existing LTE standard to the position regulation of PRACH resource, can appear at the optional position of system uplink frequency range, then reduce bandwidth after, the up PRACH of terminal sends and can not design based on existing standard, has compatibility issue.

Situation B: under the situation of considering the frequency selectivity gain, can't further reduce sampling rate, Subframe (subframe) cache size of AD/DA sampler, FFT Size etc., so the shortcoming of this mode comprises:

(1) cost of comparing scheme 1 is significantly increased, and particularly the cost of Subframe can't effectively reduce;

(2) the down control channel compatibility issue still exists;

(3) the Subframe buffer memory can't effectively reduce.

In order to address the above problem, the embodiment of the invention has proposed a kind of downlink data transmission scheme, to reduce terminal bandwidth.In this scheme, RF (radio frequency) part does not reduce bandwidth, and the downlink system control area receives bandwidth and do not reduce, and only the data Base-Band Processing is partly reduced bandwidth.

Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.

With the LTE system is example, and from the network side angle, the downlink data transmission flow process that the embodiment of the invention provides can be as shown in Figure 2.The network equipment in this flow process is generally eNB, and terminal is meant little bandwidth terminals, and promptly bandwidth is less than the terminal of LTE system bandwidth, as the MTC terminal.Dispose at least one downlink data transmission frequency band in the data field of the downlink system working band of this LTE system, and the bandwidth of each downlink data transmission frequency band is less than the LTE system shared bandwidth in control channel zone.Wherein, the territory, system control area is meant the shared symbol of PDCCH channel in the LTE subframe, and the system data territory is meant other symbols that remove the shared outer symbol of PDCCH channel in the LTE subframe.This flow process can comprise:

Step 200, eNB gives terminal by sending signaling to terminal with downlink data transmission band information (comprising frequency position and the bandwidth) indication of this terminal.Certainly, the downlink data transmission band information of also can having made an appointment between terminal and the network side, like this, the network equipment just can pass through its downlink data transmission band information of signaling terminal.

Step 201, eNB sends control signaling to terminal by the down control channel in the territory, LTE system control area, and UE carries out downlink data transmission in the downlink data transmission frequency band with scheduling;

Step 202, eNB carries out transfer of data to the terminal on this downlink data transmission frequency band in the downlink data transmission frequency band.

Wherein, when the network equipment was dispatched terminal, the indicated frequency resource scope of resource indication bit was in the whole LTE system works bandwidth or is limited in the above-mentioned downlink data transmission frequency range in the down control channel.

Because the embodiment of the invention does not reduce bandwidth to the RF part, therefore can continue to use the transmit mechanism of existing down control channel, that is, eNB sends the down control channel of terminal in the shared bandwidth range in territory, LTE system control area.The shared bandwidth range in territory, LTE system control area can be a LTE system works bandwidth.

Because the embodiment of the invention reduces for the bandwidth of the downlink data transmission signal of terminal, therefore need make terminal know downlink data transmission band information (is the shared frequency information of downlink data transmission, comprise frequency position, amount of bandwidth etc.) so that receive the downlink data that network side sends in frequency band.The frequency position and the bandwidth information of downlink data transmission frequency band, can arrange consistent in advance with end side at network side, can (be the frequency range of downlink data dispatching also by the frequency resource scope of network side (as eNB) by signaling terminal downlink data transmission place bandwidth, such as the PRB scope, the service dispatching of each terminal falls in this band limits).

Because the LTE system can adopt the mode of identical networking, so there is the problem of adjacent sub-district co-channel interference.In the different time periods, the co-channel interference situation that each frequency subband is subjected in the LTE system works frequency band may be different, so exist the demand of adjacent coordinating district interference, there is time dependent demand the position of the frequency location of M2M transfer of data in the LTE system bandwidth thus, so the band information of downlink data transmission may change.

Under by the situation of network side by the frequency resource scope of signaling terminal downlink data transmission place bandwidth, when the downlink data transmission band changed, the handling process of network side was further comprising the steps of:

Step 203, eNB is notified to terminal by signaling with downlink data transmission frequency band change information.

Need to prove that in actual applications, the performed downlink data transmission flow process of eNB does not have the strict sequential order requirement.Such as, eNB can repeatedly carry out transfer of data to terminal at the terminal connecting system and in a period of time after terminal sends down control channel in the downlink data transmission frequency band; For another example, the variation of downlink data transmission frequency band may take place repeatedly, and at each variation, eNB will be notified to terminal with downlink data transmission frequency band change information by signaling.

In the flow process shown in Figure 2, eNB is the frequency resource scope of the downlink data transmission place bandwidth of indicating terminal in the following manner:

Mode 1: the PDCCH indicating mode of common configuration

This mode is meant that eNB passes through the shared frequency information of PDCCH notice terminal downlink data transmission in the common search space of down control channel, and the shared frequency information of downlink data transmission can comprise frequency position, amount of bandwidth etc.

Further,, can be the public RNTI of terminal distribution (Radio Network Temporary Identifier, Radio Network Temporary Identifier), be designated as M-RNTI in order to distinguish little bandwidth terminals and traditional LTE terminal.Can be M-RNTI of all terminal configuration according to demand specifically, all like this terminal configuration be worked on a frequency; Also can be for the different frequency position or/and the different RNTI of the terminal configuration of amount of bandwidth (the identical frequency and the bandwidth of terminal use of common same type, network side can be classified little bandwidth terminals according to certain rule, classify such as foundation amount of bandwidth or ability rating), for example M-RNTI-1, M-RNTI-2 ... M-RNTI-n, wherein each RNTI corresponding downlink data transmission frequency resource is identical, like this can be with (amount of bandwidth also can be different) the enterprising industry affair transmission in the frequency points corresponding position of dissimilar terminal configuration.

In order to save the shared resource of above-mentioned PDCCH signaling, the mode that the PDCCH signaling can dispose in the employing cycle is carried out resource distribution.During specific implementation, can in standard, arrange information such as cycle of PDCCH signaling and place radio frames, subframe; Also can inform this PDCCH signaling configuration information of terminal by broadcast signaling by network side.

Mode 2:BCH (Broadcasting Channel, broadcast channel) advice method

Network can dispose one or more little bandwidth for transmission frequency bands at the data field of LTE system bandwidth, and can be at PBCH (Physical Broadcasting Channel, Physical Broadcast Channel) the shared frequency information of notice terminal downlink data transmission in the channel comprises frequency position, amount of bandwidth.Network adopts certain rule (classifying such as foundation amount of bandwidth or ability rating) to classify to little bandwidth terminals, and notifies the downlink data transmission band information of all types of terminals successively in PBCH according to the classification of terminal.Concrete, the network equipment is indicated the bit of the downlink data transmission band information (frequency band position, amount of bandwidth) of all types of terminals in the PBCH channel Mapping according to the order of agreement.For further saving number of bits, network in advance with the terminal information such as frequency band position, amount of bandwidth and each data frequency numbering of each transfer of data of agreement earlier, network only shine upon the bit of the numbering of the downlink data transmission frequency band of indicating each Terminal Type employing in PBCH according to the order of agreement.

A kind of specific implementation is: in the reserved bit of existing PBCH channel, add above-mentioned indication information (being the shared frequency information of downlink data transmission); Another kind of mode is: for terminal is provided with new PBCH channel separately to carry above-mentioned indication information (being the shared frequency information of downlink data transmission).If adopt the mode of newly-increased PBCH channel, then the transmit mechanism of PBCH such as resource mapping, cycle etc., can be continued to use current mechanism.The operation that terminal is obtained behind the above-mentioned mib information is consistent with mode one, repeats no more here.

In the flow process shown in Figure 2, eNB can be in the following manner be notified to terminal with the frequency band change information of downlink data transmission:

Mode 1:eNB adopts system message update mechanism notice

Under this mode, when the downlink data transmission band information (as the frequency indication information) of above-mentioned PDCCH channel or PBCH channel bearing when changing, the mechanism notice terminal of network using system message update, to the paging indication of terminal transmitting system message alteration, inform above-mentioned PDCCH channel or PBCH channel after terminal reads renewal.For reducing the influence to existing H2H terminal, this beep-page message can send separately at the M2M terminal, such as the P-RNTI scrambling of adopting terminal-specific.

Mode 2:eNB adopts PDCCH order notice

To carrying out the terminal of professional transmission, the information that eNB can adopt the mode that sends terminal-specific PDCCH order in the exclusive space of terminal to change with the frequency band of notifying the terminal downlink data transmission more timely; The mode that eNB adopts PDCCH order (order) notice terminal frequency band to change, specifically comprise: the band information (as frequency position, amount of bandwidth) eNB carries renewal in PDCCH order order after, perhaps eNB removes to read the channel (PDCCH channel or BCH channel as the aforementioned) of the band information of bearing downlink transfer of data by PDCCH order order indicating terminal, to obtain the band information of the downlink data transmission after the renewal.

Mode 3:eNB adopts the PDCCH notice

To carrying out the terminal of professional transmission, eNB can adopt in the exclusive space of terminal and send the mode of terminal-specific PDCCH to notify the frequency band change information of terminal downlink data transmission more in time.Particularly, can in the PDCCH signaling that terminal is dispatched, increase some bit indications, be used to indicate the frequency band change information of downlink data transmission, the method for bit indication includes but not limited to adopt the bitmap indicating mode or the valuetag indicating mode of frequency.Bitemap is a bit sequence, adopts the bitemap indicating mode to be meant: working frequency points is to a bit in should sequence, if eNB is this bit set, then the indicating terminal downlink traffic transmission will be transmitted on the frequency range of this bit correspondence.Valuetag is a count value, adopt the mode of valuetag indication to be meant: eNB is to frequency of the every replacing of the scheduling of terminal, then the value represented of valuetag adds 1, whether terminal can change according to the valuetag of twice scheduling in front and back is obtained whether change information of frequency range, if the terminal frequency range of judging transfer of data according to the indication of valuetag changes, then the terminal channel (PDCCH channel or BCH channel as the aforementioned) that needs retaking of a year or grade bearing downlink transfer of data is further to obtain the band information of the downlink data transmission after the variation.

The signaling terminal that mode 4:eNB adopts PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) to carry

The signaling of carrying the frequency change information is transmitted in the PDSCH channel, concrete information can comprise, the target frequency, and entry-into-force time information, be that network switches concrete some switching time (radio frames, subframe) that frequency carries out transfer of data, then when arriving some switching time, terminal is only sampled the data of target frequency bands to store and is treated subsequent treatment.

With the LTE system is example, and corresponding to the handling process of above-mentioned network side, from the terminal angle, the downlink data transmission flow process that the embodiment of the invention provides can be as shown in Figure 3.This flow process can comprise:

Step 300, terminal is obtained downlink data transmission band information (comprising frequency position and bandwidth) according to the signaling that the network equipment sends.Certainly, the downlink data transmission band information of also can having made an appointment between terminal and the network side, like this, the network equipment just can pass through its downlink data transmission band information of signaling terminal.

Step 301, terminal receives the control signaling that the network equipment sends by the down control channel in the territory, LTE system control area.

Step 302, terminal is controlled signaling according to this, on the downlink data transmission frequency band of this terminal, receives the downlink data that the network equipment sends.

In the specific implementation, terminal reads PCFICH (Physical Control Format Indicator Channel, Physical Control Format Indicator Channel) to obtain the shared symbol numbers in descending control area, only the symbol with the control area carries out the full bandwidth sampling, for guaranteeing the performance of control channel, behind the symbol sampler of data area, pilot data in the sampled data optionally can be received, carry out the channel estimating of control area based on the pilot frequency sequence in the pilot tone of control area and binding data zone, go out channel estimating final result in the symbol of control area based on above-mentioned channel estimation results interpolation calculation, detect based on this full bandwidth (being LTE system works bandwidth) that carries out down control channel and handle.

Terminal is when downlink data receiving, at first carry out total system bandwidth range data sampling and carry out the FFT processing, then according to the band information of downlink data transmission, read the sampled data in the respective bandwidth scope and put into buffer so that carry out follow-up Base-Band Processing, data in other non-its bandwidth are then directly abandoned, and then effectively reduce the demand of the Subframe buffer of terminal.Wherein, downlink data transmission band information (comprising frequency position and bandwidth) can be consistent with the network side agreement in advance, also can obtain by the signaling that receives the network side transmission, as, signaling according to the detected bearing downlink data transmission frequency band of the down control channel testing process information in the full bandwidth scope obtains the downlink data transmission band information.

Because the LTE system can adopt the mode of identical networking, so there is the problem of adjacent sub-district co-channel interference.In the different time periods, the co-channel interference situation that each frequency subband is subjected in the LTE system works frequency band may be different, so exist the demand of adjacent coordinating district interference, there is time dependent demand the position of the frequency location of M2M transfer of data in the LTE system bandwidth thus, the band information of downlink data transmission may change, therefore further, also can may further comprise the steps:

Step 303, terminal are obtained downlink data transmission frequency band change information, and according to the downlink data transmission frequency band change information that gets access to, carry out downlink data transmission on the downlink data transmission frequency band after the renewal.

Need to prove that in actual applications, the performed downlink data transmission flow process of terminal does not have the strict sequential order requirement.Such as, terminal can repeatedly receive the transfer of data of network side at connecting system and in a period of time after reading down control channel in the downlink data transmission frequency band; For another example, the variation of downlink data transmission frequency band may take place repeatedly, and at each variation, terminal all will be carried out the adjustment of downlink data transmission frequency band.

In the described flow process of Fig. 2, the mode of the frequency resource scope of eNB indicating terminal downlink data transmission place bandwidth, in the flow process shown in Figure 3, terminal can be obtained the band information of downlink data transmission by following corresponding manner:

Mode 1: the PDCCH indicating mode of common configuration

Terminal is obtained the band information of the downlink data transmission of wherein carrying at the common search space search PDCCH of down control channel.Use at PDCCH under the situation of terminal RNTI scrambling, terminal is used to the M-RNTI of its distribution (as using the M-RNTI of type correspondence under this terminal) PDCCH is carried out descrambling, if can correctly resolve PDCCH, then obtain the downlink data transmission band information that wherein carries, otherwise abandon this PDCCH signaling.Terminal can be carried out the search of PDCCH according to the configuration information of PDCCH, and the configuration information of PDCCH can be arranged at network side and end side in advance, and perhaps terminal obtains the configuration information of PDCCH according to the broadcast signaling of network side.

Because SIB is the sampling scheduled transmission, may dispatch any frequency location in the LTE system bandwidth, so terminal reads the PDCCH of M-RNTI information scrambling earlier before receiving SIB message, thereby obtain the shared frequency location information of its transfer of data (comprising the SIB transmission), when downlink data receives, the signals collecting of the frequency location that SIB information may be able to be occurred is waited for next step processing such as detection in buffer.

Mode 2:BCH advice method

If the network equipment is indicated the downlink data transmission band information (comprising frequency position and bandwidth) of all types of terminals in the PBCH channel Mapping according to the order of agreement, then corresponding, terminal is according to this about definite sequence, receives the pairing downlink data transmission band information of type under this terminal that the network equipment sends in the PBCH channel.If the network equipment shines upon the numbering of the data transmission frequency band of each Terminal Type employing of indication in PBCH according to the order of agreement, then corresponding, terminal is according to this about definite sequence, what receive that the network equipment sends in the PBCH channel is used to represent the frequency position of downlink data transmission frequency band and the numbering of bandwidth, determines corresponding downlink data transmission band information according to this numbering.

In the described flow process of Fig. 2, the mode of the frequency band change information of eNB indicating terminal downlink data transmission, in the flow process shown in Figure 3, terminal can be obtained downlink data transmission band information after the renewal by following corresponding manner:

Mode 1: terminal receives the paging indication of the system message alteration that eNB sends, and obtains PDCCH or PBCH after the renewal according to this indication, and obtains downlink data transmission band information after the renewal according to the PDCCH after upgrading or PBCH.Use in paging indication under the situation of RNTI scrambling of terminal, terminal is at first used the P-RNTI descrambling paging indication into its distribution, if can resolve this paging indication then carry out above-mentioned processing, otherwise abandons this paging indication.

Mode 2: terminal is obtained downlink data transmission band information after the renewal according to this PDCCH order order after the exclusive space of terminal receives terminal-specific PDCCH order order.A kind of specific implementation is: carried the downlink data transmission band information after upgrading in the PDCCH order order, in such cases terminal directly according to PDCCH order order can obtain downlink data transmission band information after the renewal; Another kind of specific implementation is: PDCCH order order indicating terminal removes to read the channel (PDCCH channel or BCH channel as the aforementioned) of bearing downlink data transmission frequency band information, in such cases, terminal reads respective channel according to this indication, obtains the downlink data transmission band information from the channel signaling that reads.

Mode 3: terminal is obtained downlink data transmission band information after the renewal according to this PDCCH signaling after the exclusive space of terminal receives PDCCH.A kind of specific implementation is: the bitmap that carries frequency in the PDCCH signaling, terminal will be wherein bit value be the pairing frequency of bit of " 1 " (can certainly be " 0 ") frequency that carries out downlink data transmission after as renewal according to system's agreement; Another kind of specific implementation is: the valuetag that carries frequency in the PDCCH signaling, whether terminal changes according to the valuetag of twice scheduling in front and back is judged whether the downlink data transmission band information changes, if the valuetag difference of twice scheduling in front and back, illustrate that then the downlink data transmission band information changes, in such cases, the channel of terminal retaking of a year or grade bearing downlink data transmission frequency band information (PDCCH channel or BCH channel as the aforementioned) is further to obtain the downlink data transmission band information after the variation.

Mode 4: terminal receives the PDSCH signaling that eNB sends, and obtains the downlink data transmission band information after the renewal of wherein carrying.

In addition, eNB also can not notify the change information of terminal downlink data transmission frequency band, and the variation that terminal can the spontaneous transmission band of line data now, and obtain downlink data transmission band information after the renewal specifically can be in the following ways:

Mode 5: terminal is monitored the channel (as PDCCH channel or PBCH channel) of bearing downlink data transmission frequency band information

Under this mode, the information that network side does not adopt the professional transmission of other signaling terminal datas frequency to change, terminal was monitored according to the cycle of above-mentioned PDCCH signaling or PBCH signaling always, can obtain downlink data transmission frequency band change information at any time thus.

Mode 6: this mode is the prioritization scheme of aforesaid way 5

Terminal in case obtain the downlink data transmission band information for the first time, no longer detects above-mentioned channel after above-mentioned PDCCH channel or PBCH channel are detected.In the process of eNB dispatch terminal, terminal is indicated according to PDCCH, if find to detect wrong (CRC (Cyclic Redundancy Check, cyclic redundancy check (CRC)) verification failure), no matter be because channel moment deterioration or eNB have changed the frequency band of scheduling, terminal is according to the above-mentioned channel of configuration retaking of a year or grade of above-mentioned PDCCH channel or PBCH channel, with obtain the information whether the downlink data transmission frequency band change and change after the downlink data transmission band information.This mode is compared with mode 5, can reduce the burden and the power consumption of terminal.

Mode 7: terminal is judged according to PDCCH

To carrying out the terminal of professional transmission, eNB can adopt the information of mode to notify the terminal frequency to change more in time that sends terminal-specific PDCCH in the exclusive search volume of terminal.Particularly, network can be at the PRN of LTE system bandwidth (Pseudo Random Noise code to the PRB indication information of terminal scheduling, Pseudo-Random Noise Code) indicates in the scope, terminal receives descending scheduling, in case the PRB scope of resource that judgement eNB indicates in the PDCCH signaling is not in the current Data Receiving frequency band of terminal, then terminal is according to the above-mentioned channel of configuration retaking of a year or grade of above-mentioned PDCCH channel or PBCH channel, to obtain the downlink data transmission band information.

By above description as can be seen, the embodiment of the invention is compared two kinds of existing potential bandwidth and is reduced scheme, the scheme of the embodiment of the invention is the down control channel design of compatible traditional LTE largely, does not need to redesign descending control area, reduces the influence to existing standard; Ascending control channel (comprising PUCCH channel, PRACH channel) also can with traditional LTE terminal compatibility, thereby do not have the problem of ascending resource fragment and extra upload control resource occupation.Than potential scheme 2, the embodiment of the invention can further reduce the cost of subframe.

After adopting the embodiment of the invention, because the shared frequency of resource of terminal has been limited in the little bandwidth frequency band range, when therefore eNB dispatches terminal, resource indication bit among the down control channel PDCCH can only be indicated the resource in the little bandwidth frequency band range, owing to need the band bandwidth of indication to reduce, therefore can save resource indication bit expense, reduce total number of bits of down control channel PDCCH, and then promote the transmission performance of control channel.

Based on identical technical conceive, the embodiment of the invention also provides a kind of network equipment and terminal equipment that can be applicable to above-mentioned flow process.

Referring to Fig. 4, the structural representation of the network equipment that provides for the embodiment of the invention, this network equipment can be a base station equipment.As shown in the figure, this network equipment can comprise:

Transmission control module 401 is used for the down control channel by territory, LTE system control area, sends control signaling to terminal, carries out downlink data transmission with dispatch terminal in described downlink data transmission frequency band;

Data transmission module 402 is used in described downlink data transmission frequency band the terminal on this downlink data transmission frequency band being carried out transfer of data.

Concrete, agreement has the frequency position and the bandwidth information of described downlink data transmission frequency band between this network equipment and the described terminal; Perhaps, transmission control module 401 also is used for by signaling the frequency position and the bandwidth information of described downlink data transmission frequency band being indicated to described terminal, and wherein, the amount of bandwidth of each downlink data transmission frequency band is identical, part is identical or different.

Concrete, transmission control module 401 can pass through the PDCCH signaling in the common search space of PBCH signaling or down control channel, and the frequency position and the bandwidth information of downlink data transmission frequency band are indicated to described terminal; Wherein, transmission control module 401 can be by existing PBCH signaling of expansion or newly-increased PBCH signaling, the frequency position and the bandwidth information of carrying the downlink data transmission frequency band therein.

Concrete, according to the type that is used for carrying out the terminal of transfer of data, for dissimilar terminal configuration has corresponding RNTI at described downlink data transmission frequency band; Accordingly, transmission control module 401 can according to the type of described terminal, use the PDCCH signaling that sends to described terminal as the RNTI scrambling of the type terminal configuration before sending the PDCCH signaling to described terminal.

Concrete, the configuration of PDCCH signaling employing cycle, the described PDCCH signaling cycle in downlink radio frame or/and occur in the subframe; Accordingly, the described network equipment and described terminal agreement have described PDCCH signaling configuration information, and perhaps, transmission control module 401 is notified to described terminal by broadcast signaling with described PDCCH signaling configuration information.

Concrete, transmission control module 401 can be notified the frequency position and the bandwidth information of the downlink data transmission frequency band of all types of terminals successively according to the type that is used in the terminal of the enterprising line data transmission of described downlink data transmission frequency band in the PBCH channel.

Concrete, transmission control module 401 is order according to a preconcerted arrangement, the frequency position and the bandwidth information of the downlink data transmission frequency band of all types of terminals of transmission in the PBCH channel; Perhaps, frequency position and the bandwidth with the downlink data transmission frequency band of all types of terminals is mapped as corresponding identification in advance, and arranges transmission sequence between the described network equipment and described terminal; Described transmission control module is order according to a preconcerted arrangement, and transmission is used to represent the frequency position of downlink data transmission frequency band and the sign of bandwidth in the PBCH channel.

Concrete, transmission control module 401 also is used for, and when the downlink data transmission band changes, by signaling downlink data transmission frequency band change information is notified to described terminal.Concrete, transmission control module 401 one of can be in the following manner be notified to described terminal with downlink data transmission frequency band change information:

Mode 1: to the paging indication of described terminal transmitting system message alteration, to notify the channel that is used for bearing downlink data transmission frequency band information after described terminal reads renewal, the described channel that is used for bearing downlink data transmission frequency band information can be the PDCCH channel in PBCH channel or common search space, wherein carries the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal;

Mode 2: send PDCCH order order to described terminal, carry the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal in the described PDCCH order order, carry indication information in the perhaps described PDCCHorder order, remove to read the channel that is used for bearing downlink data transmission frequency band information with indicating terminal, the described channel that is used for bearing downlink data transmission frequency band information can be the PDCCH channel in PBCH channel or common search space, wherein carries the frequency and the bandwidth information of the downlink data transmission frequency band after the renewal;

Mode 3: by in the PDCCH signaling that described terminal is dispatched, increasing the bit indication, with indicating downlink data transmission frequency band change information;

Mode 4: the signaling that will carry downlink data transmission frequency band change information is transmitted in the PDSCH channel, and described change information comprises: target frequency, entry-into-force time information.

Concrete, transmission control module 401 is in aforesaid way 3, in the PDCCH signaling that described terminal is dispatched, carry bit sequence, corresponding working frequency points of bit in the described bit sequence, when bit value was set point, the expression downlink data transmission was carried out on this bit corresponding downlink data transmission band; Perhaps, in the PDCCH signaling that described terminal is dispatched, carry count value; Wherein, the described network equipment is to downlink data transmission frequency band of the every replacing of the scheduling of terminal, then this count value adds 1, so that terminal according to the count value of twice scheduling in front and back when judging that the downlink data transmission frequency band changes, remove to read the channel that is used for bearing downlink data transmission frequency band information, the described channel that is used for bearing downlink data transmission frequency band information can be the PDCCH channel in PBCH channel or common search space, wherein carries the frequency and the bandwidth information of the downlink data transmission frequency band after the renewal.

Referring to Fig. 5, the structural representation of the terminal equipment that provides for the embodiment of the invention, this terminal can be little bandwidth terminals, as the MTC terminal.As shown in the figure, this terminal equipment can comprise:

Control information acquisition module 501 is used for receiving the control signaling of the network equipment by the down control channel transmission in territory, LTE system control area;

Data transmission module 502 is used for according to described control signaling, on the downlink data transmission frequency band of described terminal, receives the downlink data that the network equipment sends.

Concrete, agreement has the frequency position and the bandwidth information of described downlink data transmission frequency band between the described terminal and the described network equipment; Perhaps, control information acquisition module 501 also is used for, and the signaling that sends according to the described network equipment is obtained the frequency position and the bandwidth information of described downlink data transmission frequency band, and wherein, the amount of bandwidth of each downlink data transmission frequency band is identical, part is identical or different.

Concrete, the PDCCH signaling in the PBCH signaling that control information acquisition module 501 can send according to the described network equipment or the common search space of down control channel is obtained the frequency position and the bandwidth information of downlink data transmission frequency band; Wherein, the described network equipment is by existing PBCH signaling of expansion or newly-increased PBCH signaling, the frequency position and the bandwidth information of carrying the downlink data transmission frequency band therein.

Concrete, according to the type that is used for carrying out the terminal of transfer of data, for dissimilar terminal configuration has corresponding RNTI at described downlink data transmission frequency band; Accordingly, control information acquisition module 501 can use corresponding RNTI to receive described PDCCH signaling according to type under this terminal.

Concrete, described PDCCH signaling employing cycle configuration, the described PDCCH signaling cycle in downlink radio frame or/and occur in the subframe; Accordingly, described terminal and described network equipment agreement have described PDCCH signaling configuration information, and perhaps, control information acquisition module 501 can obtain described PDCCH signaling configuration information by the broadcast signaling that the described network equipment sends.

Concrete, control information acquisition module 501 can be according to predefined procedure, receives the frequency position and the bandwidth information of the pairing downlink data transmission frequency band of type under this terminal that the described network equipment sends in the PBCH channel; Perhaps, frequency position and bandwidth with the downlink data transmission frequency band of all types of terminals is mapped as corresponding identification in advance, and between the described network equipment and described terminal, arrange transmission sequence, control information acquisition module 501 is order according to a preconcerted arrangement, what receive that the described network equipment sends in the PBCH channel is used to represent the frequency position of downlink data transmission frequency band and the sign of bandwidth, determines the frequency position and the bandwidth information of corresponding downlink data transmission band according to this sign.

Concrete, control information acquisition module 501 and can be under the described network equipment is indicated the frequency position of described downlink data transmission frequency band and bandwidth information by signaling situation to described terminal, according to the signaling that the described network equipment sends, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal; Perhaps, find that voluntarily the downlink data transmission band information changes after, obtain the downlink data transmission band information after the renewal.

Concrete, described signaling comprises PDCCH or PBCH signaling, and control information acquisition module 501 is according to the signaling that the described network equipment sends, and it is one of following that the mode of obtaining the downlink data transmission band information after the renewal comprises:

Mode 1: according to of the paging indication of the described network equipment to the system message alteration of described terminal transmission, read the channel that is used for bearing downlink data transmission frequency band information after the renewal, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying; This channel that is used for bearing downlink data transmission frequency band information can be the PDCCH channel in PBCH channel or common search space;

Mode 2: receive the PDCCH order order that the described network equipment sends, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying; Perhaps obtain the indication information that wherein carries, read the channel that is used for bearing downlink data transmission frequency band information according to described indication information, the described channel that is used for bearing downlink data transmission frequency band information can be the PDCCH channel in PBCH channel or common search space, wherein carries the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal;

Mode 3:, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal according to the bit indication of the described network equipment by in the PDCCH signaling that described terminal is dispatched, being increased;

Mode 4: the signaling of the downlink data transmission frequency band change information that in the PDSCH channel, transmits according to the described network equipment, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal, described change information comprises: target frequency, entry-into-force time information.

Concrete, control information acquisition module 501 specifically is used for, receive the PDCCH signaling that the described network equipment sends when described terminal is dispatched, carry bit sequence in the described signaling, corresponding working frequency points of bit in the described bit sequence, described terminal is with the frequency position of the pairing downlink data transmission frequency band of bit of set point in the described bit sequence and bandwidth frequency position and the bandwidth information as the downlink data transmission frequency band after upgrading;

Perhaps, receive the PDCCH signaling that the described network equipment sends when described terminal is dispatched, carry count value in the described signaling, wherein, the described network equipment is to downlink data transmission frequency band of the every replacing of the scheduling of terminal, and then this count value adds 1; Whether described control information acquisition module changes according to the count value of twice scheduling in front and back is judged whether the downlink data transmission frequency changes, if judging the downlink data transmission frequency band changes, then read the channel that is used for bearing downlink data transmission frequency band information, to obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying, the described channel that is used for bearing downlink data transmission frequency band information can be the PDCCH channel in PBCH channel or common search space.

Control information acquisition module 501 one of can be in the following manner finds that voluntarily the downlink data transmission band information changes, and obtains the downlink data transmission band information after the renewal:

Mode 5:, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of carrying in the signaling of this channel by the channel that is used for bearing downlink data transmission frequency band information is detected;

Mode 6: get access to the frequency position and bandwidth information of downlink data transmission frequency band for the first time from the channel that is used for bearing downlink data transmission frequency band information after, no longer detect the channel that this is used for bearing downlink data transmission frequency band information; When the described network equipment detects failure to PDCCH indication in to its scheduling process, read the channel that this is used for bearing downlink data transmission frequency band information, to obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying;

Mode 7: according to the PDCCH signaling of described network equipment transmission, when finding that the indicated PRB scope of resource of this signaling is not in the current downlink data transmission frequency band of described terminal, read the channel that is used for bearing downlink data transmission frequency band information, and obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying.

Above-mentionedly state the PDCCH channel that the band information channel that is used for the bearing downlink transfer of data can be PBCH channel or common search space.

It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.

Claims (52)

1. downlink data transmission method, be applied to Long Term Evolution LTE system, it is characterized in that, dispose at least one downlink data transmission frequency band in the data field of the downlink system working band of described LTE system, and the bandwidth of each downlink data transmission frequency band is less than the LTE system shared bandwidth in control channel zone, and this method comprises:

The network equipment sends control signaling to terminal by the down control channel in the territory, LTE system control area, carries out downlink data transmission with dispatch terminal in described downlink data transmission frequency band;

The described network equipment carries out transfer of data to the terminal on this downlink data transmission frequency band in described downlink data transmission frequency band.

2. the method for claim 1 is characterized in that, agreement has the frequency position and the bandwidth information of described downlink data transmission frequency band between the described network equipment and the described terminal;

Perhaps, the described network equipment is indicated the frequency position and the bandwidth information of described downlink data transmission frequency band to described terminal by signaling, and wherein, the amount of bandwidth of each downlink data transmission frequency band is identical, part is identical or different.

3. method as claimed in claim 2 is characterized in that, the described network equipment is indicated the frequency position and the bandwidth information of downlink data transmission frequency band to described terminal by signaling, comprising:

The described network equipment is indicated the frequency position and the bandwidth information of downlink data transmission frequency band to described terminal by the physical downlink control channel PDCCH signaling in the common search space of Physical Broadcast Channel PBCH signaling or down control channel; Wherein, the described network equipment is by existing PBCH signaling of expansion or newly-increased PBCH signaling, the frequency position and the bandwidth information of carrying the downlink data transmission frequency band therein.

4. method as claimed in claim 3 is characterized in that, according to the type that is used for carrying out at described downlink data transmission frequency band the terminal of transfer of data, for dissimilar terminal configuration has corresponding RNTI;

The described network equipment also comprised before described terminal sends the PDCCH signaling: according to the type of described terminal, use the PDCCH signaling that sends to described terminal as the RNTI scrambling of the type terminal configuration.

5. method as claimed in claim 3 is characterized in that, the configuration of described PDCCH signaling employing cycle, the described PDCCH signaling cycle in downlink radio frame or/and occur in the subframe;

The described network equipment and described terminal agreement have described PDCCH signaling configuration information, and perhaps, the described network equipment is notified to described terminal by broadcast signaling with described PDCCH signaling configuration information.

6. method as claimed in claim 3 is characterized in that, the described network equipment is indicated the frequency position and the bandwidth information of downlink data transmission frequency band to described terminal by the PBCH signaling, comprising:

The described network equipment is notified the frequency position and the bandwidth information of the downlink data transmission frequency band of all types of terminals successively according to the type that is used in the terminal of the enterprising line data transmission of described downlink data transmission frequency band in the PBCH channel.

7. method as claimed in claim 6 is characterized in that, described frequency position and the bandwidth information of notifying the downlink data transmission frequency band of all types of terminals successively in the PBCH channel comprises:

The described network equipment is order according to a preconcerted arrangement, the frequency position and the bandwidth information of the downlink data transmission frequency band of all types of terminals of transmission in the PBCH channel;

Perhaps, frequency position and the bandwidth with the downlink data transmission frequency band of all types of terminals is mapped as corresponding identification in advance, and arranges transmission sequence between the described network equipment and described terminal; The described network equipment is order according to a preconcerted arrangement, and transmission is used to represent the frequency position of downlink data transmission frequency band and the sign of bandwidth in the PBCH channel.

8. method as claimed in claim 2 is characterized in that, under the described network equipment was indicated the frequency position of described downlink data transmission frequency band and bandwidth information by signaling situation to described terminal, this method also comprised:

When the downlink data transmission band changed, the network equipment was notified to described terminal by signaling with downlink data transmission frequency band change information.

9. method as claimed in claim 8 is characterized in that, the described network equipment is notified to described terminal by signaling with downlink data transmission frequency band change information, comprising:

The described network equipment is to the paging indication of described terminal transmitting system message alteration, to notify the channel that is used for bearing downlink data transmission frequency band information after described terminal reads renewal;

Perhaps, the described network equipment sends PDCCH order order to described terminal, carry the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal in the described PDCCH order order, carry indication information in the perhaps described PDCCH order order, remove to read the channel that is used for bearing downlink data transmission frequency band information after the renewal with indicating terminal;

Perhaps, the described network equipment is by increase the bit indication in the PDCCH signaling that described terminal is dispatched, with indicating downlink data transmission frequency band change information;

Perhaps, the signaling that the described network equipment will carry downlink data transmission frequency band change information is transmitted in Physical Downlink Shared Channel PDSCH channel, and described change information comprises: target frequency, entry-into-force time information.

10. method as claimed in claim 9 is characterized in that, the described network equipment, comprising with indicating downlink data transmission frequency band change information by increase the bit indication in the PDCCH signaling that described terminal is dispatched:

The described network equipment carries bit sequence in the PDCCH signaling that described terminal is dispatched, corresponding working frequency points of bit in the described bit sequence, when bit value was set point, the expression downlink data transmission was carried out on this bit corresponding downlink data transmission band;

Perhaps, the described network equipment carries count value in the PDCCH signaling that described terminal is dispatched; Wherein, the described network equipment is to downlink data transmission frequency band of the every replacing of the scheduling of terminal, then this count value adds 1, so that terminal according to the count value of twice scheduling in front and back when judging that the downlink data transmission frequency band changes, remove to read the channel that is used for bearing downlink data transmission frequency band information, wherein carry the frequency and the bandwidth information of the downlink data transmission frequency band after the renewal.

11., it is characterized in that the described channel that is used for bearing downlink data transmission frequency band information comprises: the PDCCH channel in PBCH channel or common search space as claim 9 or 10 described methods.

12. the method for claim 1, it is characterized in that, when the described network equipment was dispatched described terminal, the indicated frequency resource scope of resource indication bit was in whole LTE system works bandwidth or is limited in the described downlink data transmission frequency range in the down control channel.

13., it is characterized in that the shared bandwidth in territory, described system control area is a LTE system works bandwidth as claim 1-10, one of 12 described methods.

14. downlink data transmission method, be applied to Long Term Evolution LTE system, it is characterized in that, dispose at least one downlink data transmission frequency band in the data field of the downlink system working band of described LTE system, and the bandwidth of each downlink data transmission frequency band is less than the LTE system shared bandwidth in control channel zone, and this method comprises:

Terminal receives the control signaling that the network equipment sends by the down control channel in the territory, LTE system control area;

Described terminal on the downlink data transmission frequency band of described terminal, receives the downlink data that the network equipment sends according to described control signaling.

15. method as claimed in claim 14 is characterized in that, agreement has the frequency position and the bandwidth information of described downlink data transmission frequency band between the described terminal and the described network equipment;

Perhaps, the signaling that described terminal sends according to the described network equipment is obtained the frequency position and the bandwidth information of described downlink data transmission frequency band, and wherein, the amount of bandwidth of each downlink data transmission frequency band is identical, part is identical or different.

16. method as claimed in claim 15 is characterized in that, the signaling that described terminal sends according to the described network equipment is obtained the frequency position and the bandwidth information of described downlink data transmission frequency band, comprising:

The PDCCH in the PBCH signaling that described terminal sends according to the described network equipment or the common search space of down control channel obtains the frequency position and the bandwidth information of downlink data transmission frequency band; Wherein, the described network equipment is by existing PBCH signaling of expansion or newly-increased PBCH signaling, the frequency position and the bandwidth information of carrying the downlink data transmission frequency band therein.

17. method as claimed in claim 16 is characterized in that, according to the type that is used for carrying out at described downlink data transmission frequency band the terminal of transfer of data, for dissimilar terminal configuration has corresponding RNTI;

Described terminal uses corresponding RNTI to receive described PDCCH signaling according to type under it.

18. method as claimed in claim 16 is characterized in that, the configuration of described PDCCH signaling employing cycle, the described PDCCH signaling cycle in downlink radio frame or/and occur in the subframe;

Described terminal and described network equipment agreement have described PDCCH signaling configuration information, and perhaps, described terminal is obtained described PDCCH signaling configuration information by the broadcast signaling that the described network equipment sends.

19. method as claimed in claim 16 is characterized in that, described terminal is obtained the frequency position and the bandwidth information of downlink data transmission frequency band according to the PBCH signaling that the described network equipment sends, and comprising:

Described terminal is according to predefined procedure, receives the frequency position and the bandwidth information of the pairing downlink data transmission frequency band of type under this terminal that the described network equipment sends in the PBCH channel;

Perhaps, frequency position and the bandwidth with the downlink data transmission frequency band of all types of terminals is mapped as corresponding identification in advance, and arranges transmission sequence between the described network equipment and described terminal; Described terminal is order according to a preconcerted arrangement, what receive that the described network equipment sends in the PBCH channel is used to represent the frequency position of downlink data transmission frequency band and the sign of bandwidth, determines the frequency position and the bandwidth information of corresponding downlink data transmission band according to this sign.

20. method as claimed in claim 15 is characterized in that, also comprises:

Under the described network equipment is indicated the frequency position of described downlink data transmission frequency band and bandwidth information by signaling situation to described terminal, described terminal is according to the signaling that the described network equipment sends, and obtains the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal;

Perhaps, after described terminal finds that voluntarily the downlink data transmission band information changes, obtain the downlink data transmission band information after the renewal.

21. method as claimed in claim 20 is characterized in that, described terminal is according to the signaling that the described network equipment sends, and obtains the downlink data transmission band information after the renewal, comprising:

Described terminal is according to the paging indication of the described network equipment to the system message alteration of described terminal transmission, read the channel that is used for bearing downlink data transmission frequency band information after the renewal, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying;

Perhaps, described terminal equipment receives the PDCCH order order that the described network equipment sends, and obtains the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying; Perhaps obtain the indication information that wherein carries, read the channel that is used for bearing downlink data transmission frequency band information according to described indication information;

Perhaps, described terminal is according to the bit indication of the described network equipment by being increased in the PDCCH signaling that described terminal is dispatched, and obtains the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal;

Perhaps, the signaling of the downlink data transmission frequency band change information that described terminal is transmitted in the PDSCH channel according to the described network equipment, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal, described change information comprises: target frequency, entry-into-force time information.

22. method as claimed in claim 21, it is characterized in that, described terminal is according to the bit indication of the described network equipment by being increased in the PDCCH signaling that described terminal is dispatched, and obtains the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal, comprising:

Described terminal receives the PDCCH signaling that the described network equipment sends when described terminal is dispatched, carry bit sequence in the described signaling, corresponding working frequency points of bit in the described bit sequence, described terminal is with the frequency position of the pairing downlink data transmission frequency band of bit of set point in the described bit sequence and bandwidth frequency position and the bandwidth information as the downlink data transmission frequency band after upgrading;

Perhaps, described terminal receives the PDCCH signaling that the described network equipment sends when described terminal is dispatched, carry count value in the described signaling, wherein, the described network equipment is to downlink data transmission frequency band of the every replacing of the scheduling of terminal, and then this count value adds 1; Whether described terminal changes according to the count value of twice scheduling in front and back is judged whether the downlink data transmission frequency changes, if judging the downlink data transmission frequency band changes, then read the channel that is used for bearing downlink data transmission frequency band information, to obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying.

23. method as claimed in claim 20 is characterized in that, after described terminal finds that voluntarily the downlink data transmission band information changes, obtains the downlink data transmission band information after the renewal, comprising:

Described terminal is by detecting the channel that is used for bearing downlink data transmission frequency band information, obtains the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of carrying in the signaling of this channel;

Perhaps, described terminal no longer detects the described channel that is used for bearing downlink data transmission frequency band information after getting access to the frequency position and bandwidth information of downlink data transmission frequency band for the first time from the channel that is used for bearing downlink data transmission frequency band information; When described terminal when the described network equipment detects failure to PDCCH indication in to its scheduling process, read the described channel that is used for bearing downlink data transmission frequency band information to obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying;

Perhaps, the PDCCH signaling that described terminal sends according to the described network equipment, when finding that the indicated PRB scope of resource of this signaling is not in the current downlink data transmission frequency band of described terminal, read the channel that is used for bearing downlink data transmission frequency band information, and obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying.

24., it is characterized in that the described band information channel that is used for the bearing downlink transfer of data comprises: the PDCCH channel in PBCH channel or common search space as the described method of one of claim 21-23.

25. method as claimed in claim 14, it is characterized in that, when the described network equipment was dispatched described terminal, the indicated frequency resource scope of resource indication bit was in whole LTE system works bandwidth or is limited in the described downlink data transmission frequency range in the down control channel.

26., it is characterized in that the described system shared bandwidth in control channel zone is a LTE system works bandwidth as claim 14-23, one of 25 described methods.

27. network equipment, be applied to the LTE system, it is characterized in that, dispose at least one downlink data transmission frequency band in the data field of the downlink system working band of described LTE system, and the bandwidth of each downlink data transmission frequency band is less than the LTE system shared bandwidth in control channel zone, and this network equipment comprises:

Transmission control module is used for the down control channel by territory, LTE system control area, sends control signaling to terminal, carries out downlink data transmission with dispatch terminal in described downlink data transmission frequency band;

Data transmission module is used in described downlink data transmission frequency band the terminal on this downlink data transmission frequency band being carried out transfer of data.

28. the network equipment as claimed in claim 27 is characterized in that, agreement has the frequency position and the bandwidth information of described downlink data transmission frequency band between the described network equipment and the described terminal;

Perhaps, described transmission control module also is used for, and by signaling the frequency position and the bandwidth information of described downlink data transmission frequency band is indicated to described terminal, and wherein, the amount of bandwidth of each downlink data transmission frequency band is identical, part is identical or different.

29. the network equipment as claimed in claim 28, it is characterized in that, described transmission control module specifically is used for, and the PDCCH signaling in the common search space by PBCH signaling or down control channel indicates the frequency position and the bandwidth information of downlink data transmission frequency band to described terminal; Wherein, described transmission control module is by existing PBCH signaling of expansion or newly-increased PBCH signaling, the frequency position and the bandwidth information of carrying the downlink data transmission frequency band therein.

30. the network equipment as claimed in claim 29 is characterized in that, according to the type that is used for carrying out at described downlink data transmission frequency band the terminal of transfer of data, for dissimilar terminal configuration has corresponding RNTI;

Described transmission control module also is used for, and before sending the PDCCH signaling to described terminal, according to the type of described terminal, uses the PDCCH signaling that sends to described terminal as the RNTI scrambling of the type terminal configuration.

31. the network equipment as claimed in claim 29 is characterized in that, the configuration of described PDCCH signaling employing cycle, the described PDCCH signaling cycle in downlink radio frame or/and occur in the subframe;

The described network equipment and described terminal agreement have described PDCCH signaling configuration information, and perhaps, described transmission control module is notified to described terminal by broadcast signaling with described PDCCH signaling configuration information.

32. the network equipment as claimed in claim 29, it is characterized in that, described transmission control module specifically is used for, according to the type that is used in the terminal of the enterprising line data transmission of described downlink data transmission frequency band, in the PBCH channel, notify the frequency position and the bandwidth information of the downlink data transmission frequency band of all types of terminals successively.

33. the network equipment as claimed in claim 32 is characterized in that, described transmission control module specifically is used for, according to a preconcerted arrangement in proper order, and the frequency position and the bandwidth information of the downlink data transmission frequency band of all types of terminals of transmission in the PBCH channel; Perhaps, frequency position and the bandwidth with the downlink data transmission frequency band of all types of terminals is mapped as corresponding identification in advance, and arranges transmission sequence between the described network equipment and described terminal; Described transmission control module is order according to a preconcerted arrangement, and transmission is used to represent the frequency position of downlink data transmission frequency band and the sign of bandwidth in the PBCH channel.

34. the network equipment as claimed in claim 28 is characterized in that, described transmission control module also is used for, and when the downlink data transmission band changes, by signaling downlink data transmission frequency band change information is notified to described terminal.

35. the network equipment as claimed in claim 34, it is characterized in that, described transmission control module specifically is used for, to the paging indication of described terminal transmitting system message alteration, to notify the channel that is used for bearing downlink data transmission frequency band information after described terminal reads renewal;

Perhaps, send PDCCH order order to described terminal, carry the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal in the described PDCCH order order, carry indication information in the perhaps described PDCCHorder order, remove to read the channel that is used for bearing downlink data transmission frequency band information after the renewal with indicating terminal;

Perhaps, by in the PDCCH signaling that described terminal is dispatched, increasing the bit indication, with indicating downlink data transmission frequency band change information;

Perhaps, the signaling that carries downlink data transmission frequency band change information is transmitted in the PDSCH channel, described change information comprises: target frequency, entry-into-force time information.

36. the network equipment as claimed in claim 35, it is characterized in that, described transmission control module specifically is used for, in the PDCCH signaling that described terminal is dispatched, carry bit sequence, corresponding working frequency points of bit in the described bit sequence, when bit value was set point, the expression downlink data transmission was carried out on this bit corresponding downlink data transmission band;

Perhaps, in the PDCCH signaling that described terminal is dispatched, carry count value; Wherein, the described network equipment is to downlink data transmission frequency band of the every replacing of the scheduling of terminal, then this count value adds 1, so that terminal according to the count value of twice scheduling in front and back when judging that the downlink data transmission frequency band changes, remove to read the channel that is used for bearing downlink data transmission frequency band information, wherein carry the frequency and the bandwidth information of the downlink data transmission frequency band after the renewal.

37., it is characterized in that the described channel that is used for bearing downlink data transmission frequency band information comprises: the PDCCH channel in PBCH channel or common search space as the claim 35 or the 36 described network equipments.

38. the network equipment as claimed in claim 27, it is characterized in that, when the described network equipment was dispatched described terminal, the indicated frequency resource scope of resource indication bit was in whole LTE system works bandwidth or is limited in the described downlink data transmission frequency range in the down control channel.

39., it is characterized in that the shared bandwidth in territory, described system control area is a LTE system works bandwidth as claim 27-36, one of 38 described methods.

40. terminal equipment, be applied to the LTE system, it is characterized in that, dispose at least one downlink data transmission frequency band in the data field of the downlink system working band of described LTE system, and the bandwidth of each downlink data transmission frequency band is less than the LTE system shared bandwidth in control channel zone, and this terminal equipment comprises:

The control information acquisition module is used for receiving the control signaling of the network equipment by the down control channel transmission in territory, LTE system control area;

Data transmission module is used for according to described control signaling, on the downlink data transmission frequency band of described terminal, receives the downlink data that the network equipment sends.

41. terminal equipment as claimed in claim 40 is characterized in that, agreement has the frequency position and the bandwidth information of described downlink data transmission frequency band between the described terminal and the described network equipment;

Perhaps, described control information acquisition module also is used for, and the signaling that sends according to the described network equipment is obtained the frequency position and the bandwidth information of described downlink data transmission frequency band, and wherein, the amount of bandwidth of each downlink data transmission frequency band is identical, part is identical or different.

42. terminal equipment as claimed in claim 41, it is characterized in that, described control information acquisition module specifically is used for, the PDCCH signaling in the PBCH signaling that sends according to the described network equipment or the common search space of down control channel is obtained the frequency position and the bandwidth information of downlink data transmission frequency band; Wherein, the described network equipment is by existing PBCH signaling of expansion or newly-increased PBCH signaling, the frequency position and the bandwidth information of carrying the downlink data transmission frequency band therein.

43. terminal equipment as claimed in claim 42 is characterized in that, according to the type that is used for carrying out at described downlink data transmission frequency band the terminal of transfer of data, for dissimilar terminal configuration has corresponding RNTI;

Described control information acquisition module specifically is used for, and according to type under this terminal, uses corresponding RNTI to receive described PDCCH signaling.

44. terminal equipment as claimed in claim 42 is characterized in that, the configuration of described PDCCH signaling employing cycle, the described PDCCH signaling cycle in downlink radio frame or/and occur in the subframe;

Described terminal and described network equipment agreement have described PDCCH signaling configuration information, and perhaps, described control information acquisition module obtains described PDCCH signaling configuration information by the broadcast signaling that the described network equipment sends.

45. terminal equipment as claimed in claim 42, it is characterized in that, described control information acquisition module specifically is used for, and according to predefined procedure, receives the frequency position and the bandwidth information of the pairing downlink data transmission frequency band of type under this terminal that the described network equipment sends in the PBCH channel;

Perhaps, frequency position and the bandwidth with the downlink data transmission frequency band of all types of terminals is mapped as corresponding identification in advance, and arranges transmission sequence between the described network equipment and described terminal; Described control information acquisition module is order according to a preconcerted arrangement, what receive that the described network equipment sends in the PBCH channel is used to represent the frequency position of downlink data transmission frequency band and the sign of bandwidth, determines the frequency position and the bandwidth information of corresponding downlink data transmission band according to this sign.

46. terminal equipment as claimed in claim 41, it is characterized in that, described control information acquisition module also is used for, under the described network equipment is indicated the frequency position of described downlink data transmission frequency band and bandwidth information by signaling situation to described terminal, according to the signaling that the described network equipment sends, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal; Perhaps, find that voluntarily the downlink data transmission band information changes after, obtain the downlink data transmission band information after the renewal.

47. terminal equipment as claimed in claim 46 is characterized in that, described control information acquisition module specifically is used for:

According to of the paging indication of the described network equipment to the system message alteration of described terminal transmission, read the channel that is used for bearing downlink data transmission frequency band information after the renewal, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying;

Perhaps, receive the PDCCH order order that the described network equipment sends, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying; Perhaps obtain the indication information that wherein carries, read the channel that is used for bearing downlink data transmission frequency band information after the renewal, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band that wherein carries according to described indication information;

Perhaps, according to the bit indication of the described network equipment by in the PDCCH signaling that described terminal is dispatched, being increased, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal;

Perhaps, the signaling of the downlink data transmission frequency band change information that in the PDSCH channel, transmits according to the described network equipment, obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal, described change information comprises: target frequency, entry-into-force time information.

48. terminal equipment as claimed in claim 47, it is characterized in that, described control information acquisition module specifically is used for, receive the PDCCH signaling that the described network equipment sends when described terminal is dispatched, carry bit sequence in the described signaling, corresponding working frequency points of bit in the described bit sequence, described terminal is with the frequency position of the pairing downlink data transmission frequency band of bit of set point in the described bit sequence and bandwidth frequency position and the bandwidth information as the downlink data transmission frequency band after upgrading;

Perhaps, receive the PDCCH signaling that the described network equipment sends when described terminal is dispatched, carry count value in the described signaling, wherein, the described network equipment is to downlink data transmission frequency band of the every replacing of the scheduling of terminal, and then this count value adds 1; Whether described control information acquisition module changes according to the count value of twice scheduling in front and back is judged whether the downlink data transmission frequency changes, if judging the downlink data transmission frequency band changes, then read the channel that is used for bearing downlink data transmission frequency band information, to obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying.

49. terminal equipment as claimed in claim 46, it is characterized in that, described control information acquisition module specifically is used for, and by the channel that is used for bearing downlink data transmission frequency band information is detected, obtains the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying;

Perhaps, get access to the frequency position and bandwidth information of downlink data transmission frequency band for the first time from the channel that is used for bearing downlink data transmission frequency band information after, no longer detect described channel; When the described network equipment detects failure to PDCCH indication in to its scheduling process, read the described channel that is used for bearing downlink data transmission frequency band information to obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying;

Perhaps, PDCCH signaling according to described network equipment transmission, when finding that the indicated PRB scope of resource of this signaling is not in the current downlink data transmission frequency band of described terminal, read the channel that is used for bearing downlink data transmission frequency band information, and obtain the frequency position and the bandwidth information of the downlink data transmission frequency band after the renewal of wherein carrying.

50., it is characterized in that the described band information channel that is used for the bearing downlink transfer of data comprises: the PDCCH channel in PBCH channel or common search space as the described terminal equipment of one of claim 47-49.

51. terminal equipment as claimed in claim 40, it is characterized in that, when the described network equipment was dispatched described terminal, the indicated frequency resource scope of resource indication bit was in whole LTE system works bandwidth or is limited in the described downlink data transmission frequency range in the down control channel.

52., it is characterized in that the described system shared bandwidth in control channel zone is a LTE system works bandwidth as claim 40-49, one of 51 described terminal equipments.

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