CN103546194A - Data transmission method and data transmission device - Google Patents

Abstract

The invention discloses a data transmission method and a data transmission device. The method includes determining a frequency domain position of a physical resource block used for sending data by means of frequency hopping, wherein the frequency domain position is determined at least according to the number of sub-bands and the number of transmission times of the data; transmitting the data on time frequency resources corresponding to the determined frequency domain position of the physical resource block. By the data transmission method and the data transmission device, frequency gain of data transmission is increased.

Description

Data transmission method and device

Technical field

The present invention relates to the communications field, in particular to a kind of data transmission method and device.

Background technology

At Long Term Evolution (Long Term Evolution, referred to as LTE) in system, descending OFDM access (the Orthogonal Frequency Division Multiple Access that adopted, referred to as OFDMA) technology, up single carrier-frequency division multiple access access (Single Carrier-Frequency Division Multiple Access that adopted, referred to as SC-FDMA) technology, but due to the networking of general employing identical frequency process, presence of intercell interference (Inter-Cell Interference, referred to as ICI) increases obviously.In order to reduce ICI, LTE has adopted some Anti-Jamming Techniques, for example, and descending inter-cell interference cancellation (Inter-Cell Interference Cancellation, referred to as ICIC).Node B (the evolved Node B of descending ICIC technology based on evolution, referred to as eNodeB) Relative Narrowband TX Power (Relative Narrowband TX Power, referred to as RNTP) restriction method realize descending interference prompting function in advance, strengthened the covering performance of physical down Traffic Channel (Physical Downlink Shared Channel, referred to as PDSCH); Up based on (High Interference Indication/Overload Indication, referred to as HII/OI) ICIC technology, strengthened the covering performance of physical uplink Traffic Channel (Physical Uplink Shared Channel, referred to as PUSCH).

In addition, chnnel coding (Channel Coding) technology and multiple-input and multiple-output (Multiple Input Multiple Output, referred to as MIMO) technology has significant contribution improving in link transmission performance, makes data can resist the various declines of channel.Wherein, MIMO technology is passed through space diversity, spatial reuse and beam forming technique also can improve covering performance and the volumetric properties of LTE system, the coordinate multipoint that especially technical development is got up based on MIMO (Coordinated Multiple Point, referred to as CoMP) technology.But, MIMO technology and CoMP technology depend critically upon measurement and the feedback of channel condition information, wireless system is within current and following a period of time, the low-down terminal of signal to noise ratio (User Equipment, referred to as UE) remains bottleneck to the measurement of wireless channel and feedback, and feedback is got over complete and accurate on the one hand, feedback quantity is larger, to capacity and coverage distance, be a challenge, on the other hand for Quick-Change channel, feedback delay and accuracy are difficult to ensure.So for covering limited UE, closed-loop MIMO technology and CoMP technology are difficult to obtain due gain, and often adopt simple and practical open loop MIMO technology.Open loop MIMO technology can obtain diversity gain on the basis of saving resource assignment overhead and channel feedback expense, because open loop technique reduces the dependence of channel feedback, generally combines with resource frequency-hopping technology simultaneously.

Although there are multiple technologies in LTE system, can improve the transmission performance of system, especially covering performance, but network test and emulation are found by experiment, the PUSCH of intermediate data rate, the PDSCH of high data rate and ip voice (Voice over IP, referred to as VoIP) business remains in LTE system the limited channel of covering performance in each channel.Wherein main cause is: the transmitted power of UE is limited cause the PUSCH of intermediate data rate and VoIP limited, and ICI between base station causes the PDSCH of high data rate limited.This has proposed demand to the covering performance of LTE system, and LTE system has been introduced Transmission Time Interval (Transmission Time Interval, referred to as TTI) binding (Bundling) technology for this reason.TTI Bundling technology forms different redundancy versions to whole packet by chnnel coding, different redundancy versions transmits respectively in continuous a plurality of TTI, and transmit also in assessment in discrete a plurality of TTI, TTI Bundling technology is by taking more transfer resource, obtain coding gain and diversity gain, to obtain higher received energy and link signal to noise ratio, thereby improve the covering power of LTE system.Because TTI Bundling technology is to exchange covering performance for by reducing spectrum efficiency, be mainly used in the low-down terminal of signal to noise ratio, for signal to noise ratio, low-down UE can also improve covering performance by diversity technique, for example, by frequency hopping, obtain frequency diversity gain.In existing LTE standard technique, TTI Bundling and frequency hopping can be used simultaneously.

LTE technical support two class frequency hoppings, Class1 frequency hopping and type 2 frequency hoppings, wherein Class1 frequency hopping and sub band number are irrelevant, and type 2 is relevant with sub band number.System can obtain more frequency hopping position by setting sub band number, thereby obtain more multi-frequency diversity gain, but in LTE system, because frequency hopping position final in Type1 frequency hopping is only by two positions, irrelevant with sub band number, might not obtain maximum frequency hopping positions.

For example, as shown in Figure 1, between the subframe of Type1 in frequency-hopping method, because two frequency hopping positions are used alternatingly according to transmission times, position in every 10 subframes can be repeated, and causes the relative subframe numbers of subframe 0() subframe numbers relative to subframe 10() distributing the identical corresponding identical Physical Resource Block of logical resource meeting.Fig. 2 be in Type2 subframe and subframe between situation in frequency-hopping method, similar with Fig. 1.

The lower smaller problem of coverage that causes transfer of data of frequency diversity gain for data transmission method in correlation technique, not yet proposes effective solution at present.

Summary of the invention

The lower smaller problem of coverage that causes transfer of data of frequency diversity gain for data transmission method in correlation technique, the invention provides a kind of data transmission method and device, at least to address this problem.

According to an aspect of the present invention, provide a kind of data transmission method, having comprised: by frequency-hopping mode, be identified for sending the frequency domain position of the Physical Resource Block of data, wherein, described frequency domain position has at least been determined according to the number of transmissions of number of sub-bands and data; The corresponding running time-frequency resource transmitting data of frequency domain position at the described Physical Resource Block of determining.

Preferably, the frequency domain position that is identified for sending the Physical Resource Block of data by frequency-hopping mode comprises: the first frequency domain position and the second frequency domain position of according to the number of transmissions of described number of sub-bands and data, determining described Physical Resource Block.

Preferably, according to the number of transmissions of described number of sub-bands and data, determine that the first frequency domain position of described Physical Resource Block comprises: by following formula, determine described the first frequency domain position

$n_{\mathrm{PRB}}^{S1}\left(i\right)=\mathrm{mod}[(n_{\mathrm{VRB}}+\left(\mathrm{mod}(T_{\mathrm{Num}},N_{\mathrm{sb}})\right)*N_{\mathrm{RB}}^{\mathrm{sb}}),N_{\mathrm{RB}}^{\mathrm{PUSCH}}]$

Wherein, i is subframe sequence number, n _vRBfor resource is authorized position, N _sbfor subband (sub-band) number, be a RB number in subband, ascending resource piece number for frequency hopping:

for frequency hopping biasing, if

odd number,

otherwise

n _vRBby scheduling of resource, authorize appointment, N _sband

by rrc layer signal deployment.

Preferably, according to the number of transmissions of described number of sub-bands and data, determine that the second frequency domain position of described Physical Resource Block comprises:

By following formula, determine described the second frequency domain position

${{\mathrm{<figure-callout\; id="2"\; label="n\; s"\; filenames="HDA00001872315800011.png,HDA00001872315800012.png"\; state="\{\{state\}\}">n</figure-callout>}}^s}_{\mathrm{PRB}}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2,$ Wherein,

according to one of following formula, determine:

meet: $n_{\mathrm{PRB}}^{S1}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}^{S1}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2,$ I is subframe sequence number.

Preferably, when scheduling of resource authorize be distributed resource blocks time; In subframe i, the first time slot and the second time slot take respectively described the first frequency domain position and described the second frequency domain position.

When scheduling of resource authorize be localized resource blocks time; When subframe i is even number, according to transmission times, take described the first frequency domain position, when subframe i is odd number, according to transmission times, take described the second frequency domain position.

Preferably, the resource block number in described subband

by following formula, determine:

According to a further aspect in the invention, a kind of data transmission device is provided, has comprised: the first determination module, for be identified for sending the frequency domain position of the Physical Resource Block of data by frequency-hopping mode, wherein, described frequency domain position is at least determined according to the number of transmissions of number of sub-bands and data; Transport module, for the corresponding running time-frequency resource transmitting data of frequency domain position of the described Physical Resource Block determining.

Preferably, described the first determination module is for determining the first frequency domain position and second frequency domain position of described Physical Resource Block according to the number of transmissions of described number of sub-bands and data.

Preferably, described the first determination module comprises: the second determination module, and for determine the first frequency domain position of described Physical Resource Block by following formula

$n_{\mathrm{PRB}}^{S1}\left(i\right)=\mathrm{mod}[(n_{\mathrm{VRB}}+\left(\mathrm{mod}(T_{\mathrm{Num}},N_{\mathrm{sb}})\right)*N_{\mathrm{RB}}^{\mathrm{sb}}),N_{\mathrm{RB}}^{\mathrm{PUSCH}}]$

Wherein, n _vRBfor resource, authorize position, by scheduling of resource, authorize appointment, N _sbfor subband (sub-band) number,

be a RB number in subband, ascending resource piece number for frequency hopping: $N_{\mathrm{RB}}^{\mathrm{PUSCH}}=N_{\mathrm{RB}}^{\mathrm{UL}}-{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}-\left(N_{\mathrm{RB}}^{\mathrm{UL}}\mathrm{mod}2\right),$ for frequency hopping biasing, if

odd number,

otherwise

n _vRBby scheduling of resource, authorize appointment, N _sband

by rrc layer signal deployment.

Preferably, described the first determination module comprises: the 3rd determination module, and for determine the second frequency domain position n of described Physical Resource Block by following formula ^s2 _pRB(i):

${{\mathrm{<figure-callout\; id="2"\; label="n\; s"\; filenames="HDA00001872315800011.png,HDA00001872315800012.png"\; state="\{\{state\}\}">n</figure-callout>}}^s}_{\mathrm{PRB}}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2,$ Wherein, according to one of following formula, determine:

meet: $n_{\mathrm{PRB}}^{S1}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}^{S1}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2.$

Preferably, when scheduling of resource authorize be distributed resource blocks time; In subframe i, the first time slot and the second time slot take respectively described the first frequency domain position and described the second frequency domain position.

When scheduling of resource authorize be localized resource blocks time; When subframe i is even number, according to transmission times, take described the first frequency domain position, when subframe i is odd number, according to transmission times, take described the second frequency domain position.

Preferably, the resource block number in described subband by following formula, determine:

By the present invention, adopt and at least according to the number of transmissions of number of sub-bands and data, determine frequency domain position, and at running time-frequency resource transmitting data corresponding to this frequency domain position, having realized frequency hopping position increases, solved the Transmission Time Interval binding technology in correlation technique, because frequency diversity gain is lower, cause the smaller problem of coverage of transfer of data, thereby improved the frequency diversity gain of data, and then improved the coverage of transfer of data.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is according to resource frequency-hopping schematic diagram between the subframe of the Class1 of correlation technique;

Fig. 2 be according between the subframe of the Class1 of correlation technique and subframe in resource frequency-hopping schematic diagram;

Fig. 3 is according to the flow chart of the data transmission method of the embodiment of the present invention;

Fig. 4 is according to the structured flowchart of the data transmission device of the embodiment of the present invention;

Fig. 5 is the preferred structured flowchart according to the data transmission device of the embodiment of the present invention;

Fig. 6 is according to resource frequency-hopping schematic diagram between the subframe of the Class1 of the embodiment of the present invention;

Fig. 7 be according between the subframe of the Class1 of the enhancing of the embodiment of the present invention and subframe in resource frequency-hopping schematic diagram;

Fig. 8 is according to resource frequency-hopping schematic diagram between the subframe of the Class1 strengthening under the TTI Bundling of the embodiment of the present invention; And

Fig. 9 be according between the subframe of the Class1 of the enhancing of the embodiment of the present invention and subframe in resource frequency-hopping schematic diagram.

Embodiment

Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.

The present embodiment provides a kind of data transmission method, and Fig. 3 is according to the flow chart of the data transmission method of the embodiment of the present invention, and as shown in Figure 3, the method comprises the steps S302 and step S304.

Step S302: be identified for sending the frequency domain position of the Physical Resource Block of data by frequency-hopping mode, wherein, this frequency domain position is at least determined according to the number of transmissions of number of sub-bands and data.

Step S304: at the corresponding running time-frequency resource transmitting data of frequency domain position of definite Physical Resource Block.

Pass through above-mentioned steps, adopt and at least according to the number of transmissions of number of sub-bands and data, determine frequency domain position, and at running time-frequency resource transmitting data corresponding to this frequency domain position, having realized frequency hopping position increases, solved the Transmission Time Interval binding technology in correlation technique, because frequency diversity gain is lower, cause the smaller problem of coverage of transfer of data, thereby improved the frequency diversity gain of data, and then improved the coverage of transfer of data.

When implementing, in order to improve the definite accuracy of frequency domain position, can determine according to the number of transmissions of described number of sub-bands and data the first frequency domain position and second frequency domain position of described Physical Resource Block.

As an execution mode preferably, can determine described the first frequency domain position by following formula

$n_{\mathrm{PRB}}^{S1}\left(i\right)=\mathrm{mod}[(n_{\mathrm{VRB}}+\left(\mathrm{mod}(T_{\mathrm{Num}},N_{\mathrm{sb}})\right)*N_{\mathrm{RB}}^{\mathrm{sb}}),N_{\mathrm{RB}}^{\mathrm{PUSCH}}]$

Wherein, n _vRBfor resource, authorize position, by scheduling of resource, authorize appointment, N _sbfor subband (sub-band) number,

be a RB number in subband,

ascending resource piece number for frequency hopping: $N_{\mathrm{RB}}^{\mathrm{PUSCH}}=N_{\mathrm{RB}}^{\mathrm{UL}}-{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}-\left(N_{\mathrm{RB}}^{\mathrm{UL}}\mathrm{mod}2\right),$

for frequency hopping biasing, if

odd number,

otherwise

n _vRBby scheduling of resource, authorize appointment, N _sband

by rrc layer signal deployment.

As an execution mode preferably, can determine described the second frequency domain position by following formula

${{\mathrm{<figure-callout\; id="2"\; label="n\; s"\; filenames="HDA00001872315800011.png,HDA00001872315800012.png"\; state="\{\{state\}\}">n</figure-callout>}}^s}_{\mathrm{PRB}}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2,$ Wherein,

according to one of following formula, determine:

meet: $n_{\mathrm{PRB}}^{S1}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}^{S1}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2.$

Preferably, when scheduling of resource authorize be distributed resource blocks time, in subframe i, the first time slot and the second time slot take respectively the first frequency domain position and the second frequency domain position.

When scheduling of resource authorize be localized resource blocks time, when subframe i is even number, according to transmission times, take described the first frequency domain position, when subframe i is odd number, according to transmission times, take the second frequency domain position.

As an execution mode preferably, the resource block number in subband by following formula, determine:

It should be noted that, in the step shown in the flow chart of accompanying drawing, can in the computer system such as one group of computer executable instructions, carry out, and, although there is shown logical order in flow process, but in some cases, can carry out shown or described step with the order being different from herein.

In another embodiment, also provide a kind of data transmission software, the technical scheme that this software is described for carrying out above-described embodiment and preferred embodiment.

In another embodiment, also provide a kind of storage medium, stored above-mentioned data transmission software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.

The embodiment of the present invention also provides a kind of data transmission device, this data transmission device can be for realizing above-mentioned data transmission method and preferred implementation, carried out explanation, repeated no more, below the module relating in this data transmission device had been described.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described system and method for following examples is preferably realized with software, hardware, or the realization of the combination of software and hardware also may and be conceived.

Fig. 4 is according to the structured flowchart of the data transmission device of the embodiment of the present invention, and as shown in Figure 4, this device comprises: the first determination module 42, transport module 44, is described in detail said structure below.

The first determination module 42, for be identified for sending the frequency domain position of the Physical Resource Block of data by frequency-hopping mode, wherein, frequency domain position is at least determined according to the number of transmissions of number of sub-bands and data; Transport module 44, is connected to the first determination module 42, for the corresponding running time-frequency resource transmitting data of frequency domain position at the definite Physical Resource Block of the first determination module 42.

Preferably, the first determination module 42 is for determining the first frequency domain position and second frequency domain position of described Physical Resource Block according to the number of transmissions of described number of sub-bands and data.

Fig. 5 is the preferred structured flowchart according to the data transmission device of the embodiment of the present invention, and as shown in Figure 5, the first determination module 42 comprises: the second determination module 422 and the 3rd determination module 424, be described in detail said structure below.

The first determination module 42 comprises: the second determination module 422, and for determine the first frequency domain position of described Physical Resource Block by following formula

$n_{\mathrm{PRB}}^{S1}\left(i\right)=\mathrm{mod}[(n_{\mathrm{VRB}}+\left(\mathrm{mod}(T_{\mathrm{Num}},N_{\mathrm{sb}})\right)*N_{\mathrm{RB}}^{\mathrm{sb}}),N_{\mathrm{RB}}^{\mathrm{PUSCH}}];$

Wherein, n _vRBfor resource, authorize position, by scheduling of resource, authorize appointment, N _sbfor subband (sub-band) number,

be a RB number in subband,

ascending resource piece number for frequency hopping: $N_{\mathrm{RB}}^{\mathrm{PUSCH}}=N_{\mathrm{RB}}^{\mathrm{UL}}-{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}-\left(N_{\mathrm{RB}}^{\mathrm{UL}}\mathrm{mod}2\right),$

for frequency hopping biasing, if

odd number,

otherwise

n _vRBby scheduling of resource, authorize appointment, N _sband by rrc layer signal deployment.

The first determination module comprises: the 3rd determination module 424, and for determine the second frequency domain position n of described Physical Resource Block by following formula ^s2 _pRB(i):

${n^{s2}}_{\mathrm{PRB}}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2,$ Wherein,

according to one of following formula, determine:

meet: $n_{\mathrm{PRB}}^{S1}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}^{S1}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2.$

Preferably, the resource block number in subband

by following formula, determine:

Below in conjunction with preferred embodiment, describe, following preferred embodiment combines above-described embodiment and preferred implementation.

Preferred embodiment one

This preferred embodiment provides a kind of data transmission method, and in this preferred embodiment, transmitting terminal is identified for sending the frequency domain position of the Physical Resource Block of data by frequency hopping, and frequency domain position is at least determined according to the number of transmissions of number of sub-bands and data.

In this preferred embodiment, the first frequency domain position of Physical Resource Block is determined according to following:

or, $n_{\mathrm{PRB}}^{S1}\left(i\right)=\mathrm{mod}[(n_{\mathrm{VRB}}+\left(\mathrm{mod}(T_{\mathrm{Num}},N_{\mathrm{sb}})\right)*N_{\mathrm{RB}}^{\mathrm{sb}}),N_{\mathrm{RB}}^{\mathrm{PUSCH}}].$

Wherein, n _vRBfor resource, authorize position, by scheduling of resource, authorize appointment, N _sbfor subband (sub-band) number,

be a RB number in subband,

ascending resource piece number for frequency hopping: $N_{\mathrm{RB}}^{\mathrm{PUSCH}}=N_{\mathrm{RB}}^{\mathrm{UL}}-{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}-\left(N_{\mathrm{RB}}^{\mathrm{UL}}\mathrm{mod}2\right),$ Wherein,

for frequency hopping biasing, if

odd number,

otherwise ${\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}=N_{\mathrm{RB}}^{\mathrm{HO}}.$

Preferably, n _vRBby scheduling of resource, authorize appointment, N _sband

by rrc layer signal deployment.

In this preferred embodiment, the second frequency domain position of Physical Resource Block is determined according to following formula: $n_{\mathrm{PRB}}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2;$

Wherein,

according to one of following formula, determine:

meet: $n_{\mathrm{PRB}}^{S1}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}^{S1}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2.$

Resource block number in subband

by following formula, determine:

Preferred embodiment two

This preferred embodiment provides a kind of data transmission method, as shown in Figure 1, subframe 0 passes and retransmits the resource location taking with the head that subframe 8, subframe 16 are data, when adopting between Class1 subframe frequency hopping, only have two frequency hopping positions, two frequency hopping positions are used alternatingly according to the number of transmissions, obviously, resource location while retransmitting for the second time and first pass identical, retransmit if had for the third time, and it will adopt the resource location retransmitting for the first time.

And between the subframe of the Class1 adopt strengthening during frequency hopping, as shown in Figure 6, by the number of subband is set, can increase the quantity of frequency hopping position.Different transmission times can adopt different frequency hopping positions.

In this preferred embodiment, by formula 1, determine frequency hopping position:

$n_{\mathrm{PRB}}^{S1}\left(i\right)={\mathrm{<figure-callout\; id="1"\; label="n\; VRB\; Formula"\; filenames="HDA00001872315800011.png,HDA00001872315800012.png"\; state="\{\{state\}\}">n</figure-callout>}}_{\mathrm{VRB}}$ Formula 1

In the subframe passing at head, frequency hopping position is determined according to formula 1.

The frequency hopping position of being determined by formula 2:

$n_{\mathrm{PRB}}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2$ Formula 1

Preferably,

according to one of following formula, determine:

meet: $n_{\mathrm{PRB}}^{S1}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}^{S1}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2.$

In this preferred embodiment, frequency hopping position, under specific number of sub-bands, changes along with the increase of transmission times.Re-transmission is determined the frequency hopping position in the subframe retransmitting according to number of retransmissions and subband setting.

Particularly: $N_{\mathrm{RB}}^{\mathrm{UL}}=50;$ N _sb=1； $N_{\mathrm{RB}}^{\mathrm{HO}}=2.$

Owing to only having 1 subband, if as UL Grant indication n _vRB=[2], Physical Resource Block n _pRBfor: [1] or [13].Wherein take [1] during even number the number of transmissions, during odd number the number of transmissions, take [13].

If $N_{\mathrm{RB}}^{\mathrm{UL}}=50;$ N _sb=2； $N_{\mathrm{RB}}^{\mathrm{HO}}=2.$

Owing to there being 2 subbands, if as UL Grant indication n _vRB=[2], Physical Resource Block n _pRBfor: [1] or [13] or [24] or [37].During transmission, can transmit for the first time corresponding subframe subframe corresponding to 1, the second number transmission that plant oneself and occupy Resource Block 24, transmit for the third time corresponding subframe 13, the four numbers that plant oneself and transmit corresponding subframes and occupy Resource Block 37.

In this preferred embodiment, owing to having increased frequency hopping position, can increase frequency diversity gain.

Preferred embodiment three

This preferred embodiment is identical with the condition of preferred embodiment two, but difference is the frequency hopping position of first Slot in the first subframe that passes or retransmit, according to formula 3, determines:

$n_{\mathrm{PRB}}^{S1}\left(i\right)=\mathrm{mod}[(n_{\mathrm{VRB}}+\left(\mathrm{mod}(T_{\mathrm{Num}},N_{\mathrm{sb}})\right)*N_{\mathrm{RB}}^{\mathrm{sb}}),N_{\mathrm{RB}}^{\mathrm{PUSCH}}]$ Formula 3

It should be noted that, in the first subframe that passes or retransmit, the frequency hopping position of first Slot, under specific number of sub-bands, changes along with the increase of transmission times.

In the first subframe that passes or retransmit, the frequency hopping position of second Slot is identical with preferred embodiment two.

Specifically as shown in Figure 6.

Preferred embodiment four

This preferred embodiment is identical with the condition of embodiment bis-, so distinguish under TTI Bundling scene, first biography is all to occupy a plurality of TTI with retransmitting, for example 4 TTI.Because Fig. 7 is frequency hopping between subframe, the frequency domain position that passes 4 subframes that occupy so first can be determined by formula 1.And the frequency domain position of 4 subframes that occupy that retransmit can be determined according to the formula 2 in preferred enforcement two.

Embodiment tetra-

This preferred embodiment is similar to preferred embodiment two, so but distinguish under TTI Bundling scene, first biography is all to occupy a plurality of TTI with retransmitting, for example 4 TTI.Because Fig. 9 is frequency hopping in subframe and between subframe, so first, pass or retransmit in first Slot in 4 subframes that occupy frequency domain position can determine by formula 3.And frequency domain position in first Slot in first 4 subframes that occupy that pass or retransmit can be according to preferred enforcement three enforcements.

Pass through above-described embodiment, a kind of data transmission method and device are provided, adopt and at least according to the number of transmissions of number of sub-bands and data, determine frequency domain position, and at running time-frequency resource transmitting data corresponding to this frequency domain position, having realized frequency hopping position increases, solved the Transmission Time Interval binding technology in correlation technique, the smaller problem of coverage that causes transfer of data because frequency diversity gain is lower, thereby improved the frequency diversity gain of the data under TTI Bundling transmission means, and then improved the coverage of transfer of data, and do not increase control overhead.It should be noted that, these technique effects are not that above-mentioned all execution modes have, and some technique effect is that some preferred implementation just can obtain.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (12)

1. a data transmission method, is characterized in that comprising:

By frequency-hopping mode, be identified for sending the frequency domain position of the Physical Resource Block of data, wherein, described frequency domain position is at least determined according to the number of transmissions of number of sub-bands and data;

The corresponding running time-frequency resource transmitting data of frequency domain position at the described Physical Resource Block of determining.

2. method according to claim 1, is characterized in that, the frequency domain position that is identified for sending the Physical Resource Block of data by frequency-hopping mode comprises:

According to the number of transmissions of described number of sub-bands and data, determine the first frequency domain position and second frequency domain position of described Physical Resource Block.

3. method according to claim 2, is characterized in that, determines that the first frequency domain position of described Physical Resource Block comprises according to the number of transmissions of described number of sub-bands and data:

By following formula, determine described the first frequency domain position

$n_{\mathrm{PRB}}^{S1}\left(i\right)=\mathrm{mod}[(n_{\mathrm{VRB}}+\left(\mathrm{mod}(T_{\mathrm{Num}},N_{\mathrm{sb}})\right)*N_{\mathrm{RB}}^{\mathrm{sb}}),N_{\mathrm{RB}}^{\mathrm{PUSCH}}]$

Wherein, i is subframe sequence number, n _vRBfor resource is authorized position, N _sbfor subband (sub-band) number,

be a RB number in subband,

ascending resource piece number for frequency hopping: $N_{\mathrm{RB}}^{\mathrm{PUSCH}}=N_{\mathrm{RB}}^{\mathrm{UL}}-{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}-\left(N_{\mathrm{RB}}^{\mathrm{UL}}\mathrm{mod}2\right),$

for frequency hopping biasing, if odd number,

otherwise

n _vRBby scheduling of resource, authorize appointment, N _sband

by rrc layer signal deployment.

4. method according to claim 2, is characterized in that, determines that the second frequency domain position of described Physical Resource Block comprises according to the number of transmissions of described number of sub-bands and data:

By following formula, determine described the second frequency domain position n ^s2 _pRB(i):

${n^{s2}}_{\mathrm{PRB}}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2,$ Wherein,

according to one of following formula, determine:

meet: $n_{\mathrm{PRB}}^{S1}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}^{S1}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2,$ I is subframe sequence number.

5. according to the method described in claim 3 or 4, it is characterized in that:

When scheduling of resource authorize be distributed resource blocks time; In subframe i, the first time slot and the second time slot take respectively described the first frequency domain position and described the second frequency domain position.

When scheduling of resource authorize be localized resource blocks time; When subframe i is even number, according to transmission times, take described the first frequency domain position, when subframe i is odd number, according to transmission times, take described the second frequency domain position.

6. according to the method described in claim 3 or 4, it is characterized in that the resource block number in described subband

by following formula, determine:

7. a data transmission device, is characterized in that comprising:

The first determination module, for be identified for sending the frequency domain position of the Physical Resource Block of data by frequency-hopping mode, wherein, described frequency domain position is at least determined according to the number of transmissions of number of sub-bands and data;

Transport module, for the corresponding running time-frequency resource transmitting data of frequency domain position of the described Physical Resource Block determining.

8. device according to claim 7, is characterized in that, described the first determination module is for determining the first frequency domain position and second frequency domain position of described Physical Resource Block according to the number of transmissions of described number of sub-bands and data.

9. device according to claim 8, is characterized in that, described the first determination module comprises: the second determination module, and for determine the first frequency domain position of described Physical Resource Block by following formula

$n_{\mathrm{PRB}}^{S1}\left(i\right)=\mathrm{mod}[(n_{\mathrm{VRB}}+\left(\mathrm{mod}(T_{\mathrm{Num}},N_{\mathrm{sb}})\right)*N_{\mathrm{RB}}^{\mathrm{sb}}),N_{\mathrm{RB}}^{\mathrm{PUSCH}}]$

Wherein, n _vRBfor resource, authorize position, by scheduling of resource, authorize appointment, N _sbfor subband (sub-band) number,

be a RB number in subband,

ascending resource piece number for frequency hopping: $N_{\mathrm{RB}}^{\mathrm{PUSCH}}=N_{\mathrm{RB}}^{\mathrm{UL}}-{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}-\left(N_{\mathrm{RB}}^{\mathrm{UL}}\mathrm{mod}2\right),$

for frequency hopping biasing, if

odd number,

otherwise n _vRBby scheduling of resource, authorize appointment, N _sband by rrc layer signal deployment.

10. device according to claim 8, is characterized in that, described the first determination module comprises: the 3rd determination module, and for determine the second frequency domain position n of described Physical Resource Block by following formula ^s2 _pRB(i):

${n^{s2}}_{\mathrm{PRB}}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2,$ Wherein,

according to one of following formula, determine:

meet: $n_{\mathrm{PRB}}^{S1}\left(i\right)={\tilde{n}}_{\mathrm{PRB}}^{S1}\left(i\right)+{\tilde{N}}_{\mathrm{RB}}^{\mathrm{HO}}/2.$

11. according to the device described in claim 9 or 10, it is characterized in that:

When scheduling of resource authorize be distributed resource blocks time; In subframe i, the first time slot and the second time slot take respectively described the first frequency domain position and described the second frequency domain position.

When scheduling of resource authorize be localized resource blocks time; When subframe i is even number, according to transmission times, take described the first frequency domain position, when subframe i is odd number, according to transmission times, take described the second frequency domain position.

12. according to the device described in claim 9 or 10, it is characterized in that the resource block number in described subband

by following formula, determine:

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