CN103427963A - Transmission time interval cluster transmission method and device - Google Patents

Abstract

The invention discloses a transmission time interval cluster transmission method and device. The method comprises the steps that a terminal determines a set A of an air interface delay time limit d and common divisors, smaller than p, in common divisors of a reach period p of a data packet; elements, meeting the formula: mod(d-a, (p/a)-1)=0, in the set A are determined and form a subset B; values corresponding to the elements in the subset B in a one-to-one mode are computed according to the formula: c=(d-b)/((p/b)-1) and form a set C; a minimum value cmin in the elements of the set C is determined, an element bcmin, corresponding to the cmin, in the subset B is determined, the bcmin is used as a continuous TTI number used in a transmission try in transmission time interval cluster transmission, and the cmin is used as loopback time; when the terminal transmits the data packet, on the basis that the continuous TTI number used in one transmission try is the bcmin and the loopback time is the cmin, redundancy version data of the date packet in each transmission try are sent.

Description

A kind of transmission time interval (tti) bundle transmission method and device

Technical field

The present invention relates to long evolving system, relate in particular to a kind of transmission time interval (tti) bundle transmission method and device.

Background technology

Long Term Evolution (Long Term Evolution, referred to as LTE) Radio Access Network of system comprises: the network side (Node B of enhancing, eNB) with subscriber equipment (UE), wherein, network side is connected with core network or other network, and by wave point be arranged in the community UE that this network side serves and communicate.In order to promote voice between up link (UL) net, be IP-based voice transfer (Voice over IP, referred to as VoIP) service coverage, the LTE physical layer has been introduced transmission time interval (tti) bundle (Transmission Time Interval Bundling, referred to as TTI Bundling) technology.

Wherein, transmission time interval (tti) bundle TTI Bundling refers to that scheduler is that UE distributes the Radio Resource that surpasses 1 Transmission Time Interval TTI.Basic thought is to allow UE to use continuous TTI to send continuously the redundancy versions (Redundancy Version, referred to as RV) of same packet, and 1 transmission attempt using aforesaid operations as this UE.

Particularly, as shown in Figure 1, the 1st transmission attempt of the 1st VoIP packet is Physical Uplink Shared Channel (the Physical Uplink Shared Channel in TTI 1 to TTI 4 scope, referred to as PUSCH) on be performed, corresponding to mixed automatic retransfer request (Hybrid Automatic Repeat Request, referred to as HARQ) ack/nack (ACK/NACK) of entity replys on the downlink physical HARQ of TTI 8 indicating channel (Down Link Physical Indication Shared Channel, referred to as PHICH) and is sent out; If respective acknowledgement is for negating that NACK replys, the 2nd transmission attempt of the 1st VoIP packet is performed on the PUSCH of TTI 17 to TTI 20, and the corresponding ACK/NACK from the HARQ entity replys and is sent out on the PHICH of TTI 24; Until respective acknowledgement is replied for sure ACK, or reached the maximum transmitted number of attempt allowed by that analogy, the 1st VoIP data packet transmission stops.

Attention: because the air interface delay constraint relevant with up link VoIP business is set to 50ms usually, therefore, above-mentioned maximum transmitted number of attempt is at most 3 times.Similarly, the individual VoIP packet of m (m>1) is transmitted by the way, and the initial time of m data packet transmission is TTI 20* (m-1)+1, and need to before initial time, arrive.

Yet existing assessment result shows: even applied described TTI Bundling technology, owing to being limited to the up link maximum transmission power, the covering of still can't realizing ideal of VoIP business.For how further to promote the problem of VoIP service coverage performance under the 50ms delay constraint, effective solution is not yet proposed at present.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of transmission time interval (tti) bundle transmission method and device, under the delay constraint of interface, promotes the covering performance of speech transmission service aloft.

For solving the problems of the technologies described above, a kind of transmission time interval (tti) bundle transmission method of the present invention comprises:

Terminal is before carrying out the transmission time interval (tti) bundle transmission, determine the set A that is less than the common divisor of p in the common divisor of arrival period p of air interface delay constraint d and packet, and meet mod (d-a in definite set A, (p/a)-1)=0 element, form subset B, wherein, a means the element in set A, according to c=(d-b)/((p/b)-1), calculating is worth one to one with the element in subset B, forms set C, wherein, c means to gather the element in C, and b means the element in subset B;

Described terminal is determined the minimum value c of the element in set C _min, and and c _minElement b in corresponding subset B _Cmin, in the transmission time interval (tti) bundle transmission, by b _CminAs the continuous T TI number used in a transmission attempt, and by c _minAs Loop Round Trip Time;

Described terminal, when transmission one packet, is b according to the continuous T TI number used in a transmission attempt _Cmin, and Loop Round Trip Time is c _min, send the redundancy versions data of described packet each transmission attempt.

Further, also comprise:

While not meeting the element of mod (d-a, (p/a)-1)=0 in set A, upgrading air interface delay constraint d is d-1, and redefines the set A that is less than the common divisor of p in the common divisor of d and p.

Further, also comprise:

Determining and C _minElement b in corresponding subset B _CminAfter, get p/b _CminAs in transmission time interval (tti) bundle transmission to the maximum transmitted number of attempt of a packet.

Further, interface delay restriction d=50ms aloft, during the arrival period p of packet=20ms, determine in the transmission time interval (tti) bundle transmission, the continuous T TI number used in a transmission attempt is 5, and Loop Round Trip Time is 15ms, and is 4 to the maximum transmitted number of attempt of a packet.

Further, according to the continuous T TI number used in a transmission attempt, be b _Cmin, and Loop Round Trip Time is c _min, send the redundancy versions data of described packet each transmission attempt, comprising:

Described terminal is 5 according to the continuous T TI number used in a transmission attempt, and Loop Round Trip Time is 15ms, sends the redundancy versions data of described packet each transmission attempt.

Further, also comprise: send described packet before the redundancy versions data of each transmission attempt, also comprise:

Described terminal is according to the scope of redundancy versions (RV) index of current support, and the predetermined bit position that obtains respectively each RV index, according to resource allocated size and the modulation scheme when time transmission attempt, obtain the total predetermined bit length of each RV index;

Described terminal is obtained described packet in the whole RV data when time transmission attempt according to described predetermined bit position and predetermined bit length.

Further, according to resource allocated size and the modulation scheme when time transmission attempt, obtain the total predetermined bit length of each RV index, comprising:

According to L _n=Q _nN _nK obtains the total predetermined bit length of each RV index, wherein, and L _nMean the total predetermined bit length of each RV index of the n time transmission attempt, Q _nThe order of modulation that means the n time transmission attempt, N _nThe resource allocated size that means the n time transmission attempt, K means the data subcarrier number that each Resource Block comprises.

Further, send the redundancy versions data of described packet each transmission attempt, comprising:

Described terminal from described when whole RV data of time transmission attempt, selection is no more than M RV data, and selected each RV data are mapped to respectively at least one TTI in 5 continuous T TI that time transmission attempt is used, wherein, M means the minimum value among the RV index number and 5 of current support.

Further, select to be no more than M RV data, and at least one TTI that selected each RV data are mapped to respectively in 5 continuous T TI that time transmission attempt is used is upper, comprising:

Be N in described RV index number, and N is not less than at 5 o'clock, selects 5 RV data, and, according to the sequencing of RV index, described 5 RV data are mapped to respectively on 5 continuous T TI that time transmission attempt is used;

In described RV index number, be N, and N is for being less than at 5 o'clock, select N RV data, and according to the sequencing of RV index, described N RV data are mapped to respectively to 5 continuous T TI that use when time transmission attempt upper, wherein, each RV data is at least on a TTI who is mapped in 5 continuous T TI, and, when the index of the first RV data of inferior transmission attempt continuous with the index of the tail RV data of transmission attempt last time.

Further, also comprise:

Return and reply to terminal on any one in 1st～10 TTI of network side after described terminal completes a transmission attempt.

Further, a kind of transmission time interval (tti) bundle transmitting device comprises: computing unit, parameter are chosen unit, data configuration unit and data transmission unit, wherein:

Described computing unit, for before carrying out the transmission time interval (tti) bundle transmission, determine the set A that is less than the common divisor of p in the common divisor of arrival period p of air interface delay constraint d and packet, and meet mod (d-a in definite set A, (p/a)-1)=0 element, form subset B, wherein, a means the element in set A, and according to c=(d-b)/((p/b)-1), calculating is worth one to one with the element in subset B, form set C, wherein, c means to gather the element in C, and b means the element in subset B;

Described parameter is chosen unit, for determining the minimum value c of the element of gathering C _min, and and c _minElement b in corresponding subset B _Cmin, in transmission time interval (tti) bundle transmission by b _CminAs the continuous T TI number used in a transmission attempt, and by c _minAs Loop Round Trip Time;

Described data configuration unit, for configuring the redundancy versions data that will send packet;

Described data transmission unit, for when transmitting a packet, is b according to the continuous T TI number used in a transmission attempt _Cmin, and Loop Round Trip Time is c _minSend the redundancy versions data of described packet each transmission attempt.

Further, described parameter is chosen unit, specifically for the d=50ms of interface delay restriction aloft, during the arrival period p of packet=20ms, determine in the transmission time interval (tti) bundle transmission, the continuous T TI number used in a transmission attempt is 5, and Loop Round Trip Time is 15ms, to the maximum transmitted number of attempt of a packet, is 4.

Further, described data transmission unit, be 5 specifically for the continuous T TI number according to using in a transmission attempt, and Loop Round Trip Time is 15ms, sends the redundancy versions data of described packet each transmission attempt.

Further, described data configuration unit, there is the scope for the redundancy versions according to current support (RV) index, obtain respectively the predetermined bit position of each RV index, according to resource allocated size and the modulation scheme when time transmission attempt, obtain the total predetermined bit length of each RV index, according to described predetermined bit position and predetermined bit length, obtain described packet in the whole RV data when time transmission attempt.

Further, described data configuration unit, have for according to L _n=Q _nN _nK obtains the total predetermined bit length of each RV index, wherein, and L _nBe the total predetermined bit length of each RV index of the n time transmission attempt, Q _nBe the order of modulation of the n time transmission attempt, N _nBe the resource allocated size of the n time transmission attempt, the data subcarrier number that K comprises for each Resource Block.

In sum, the present invention determines according to the air interface delay constraint of VoIP and the arrival cycle of packet continuous T TI number and the Loop Round Trip Time used in a transmission attempt in transmission time interval (tti) bundle TTI Bundling transmission, thereby for each VoIP packet, can realize maximum TTI utilance under specific delay constraint and maximum time diversity, finally promoted the covering performance of up link VoIP business.

The accompanying drawing explanation

Fig. 1 is the schematic diagram of existing TTI Bundling transmission method;

Fig. 2 is the schematic diagram of existing redundancy versions RV example;

Fig. 3 is the schematic diagram of present embodiment TTI Bundling transmission method;

Fig. 4 is the schematic diagram of 4 transmission attempts of the embodiment 1 of present embodiment;

Fig. 5 is the schematic diagram of 4 transmission attempts of the embodiment 2 of present embodiment

Fig. 6 is the Organization Chart of the transmission time interval (tti) bundle transmitting device of present embodiment.

Embodiment

In present embodiment, determine according to VoIP air interface delay constraint and packet arrival cycle continuous T TI number (TTI Bundling size) and the Loop Round Trip Time (Round Trip Time is called for short RTT) used in a transmission attempt in transmission time interval (tti) bundle TTI Bundling transmission.Particularly, aloft interface delay is restricted to 50ms, and the arrival cycle of packet, while being 20ms, determines that Loop Round Trip Time is 15ms, and the continuous T TI number used in a transmission attempt is 5 and is 4 to the maximum transmitted number of attempt of a packet.

Determining Loop Round Trip Time, and after the continuous T TI number used in a transmission attempt, according to determined Loop Round Trip Time, and the continuous T TI number used in a transmission attempt, send the redundancy versions data of packet each transmission attempt, thereby realized the maximum TTI utilance under the interface delay restriction aloft of every up link VoIP packet, finally further promoted up link VoIP service coverage.Wherein, described Loop Round Trip Time RTT refers to the quantity from time started of a transmission attempt to the TTI at the time started interval of transmission attempt next time.

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 do not conflict, embodiment and the feature in embodiment in the application can combine mutually.

In the LTE system, in order to realize the error control of physical layer, the HARQ mechanism of incremental redundancy (Incremental Redundancy, referred to as IR) form is used.Particularly, in order to realize the HARQ transmission of IR form, the RV design is adopted and uses by the LTE system.Wherein, each RV is defined by a predetermined bit position and the predetermined bit length of RV, predetermined bit length is relevant with current resource allocated size and modulation scheme, specifically refer to, from the predetermined bit position of channel encoder output sequence, start the bit sequence with predetermined bit length that circulates one by one and export.

As shown in Figure 2, for concrete RV example schematic, wherein, this example is to have defined 4 RV, each RV is corresponding to a transmission starting point (predetermined bit position), transmit first with the HARQ re-transmission of each time and use respectively identical or different RV, thereby realized the progressively accumulation of redundant bit or bit energy, finally completed the HARQ operation of IR form.

In present embodiment in the transmission time interval (tti) bundle transmission method, determine the continuous T TI number that uses in a transmission attempt and the step of Loop Round Trip Time, comprising:

Suppose that up link VoIP business air interface delay constraint is d (unit is ms), and the VoIP packet is to take the individual TTI of p (p<d) (on every TTI time domain, occupying 1ms) as the cycle periodically arrives, and claims that the arrival cycle of packet is p (unit is ms).

Step 1: obtain the set A that is less than the common divisor of p in the common divisor of d and p;

Step 2: obtain subset B, wherein, subset B consists of the element a in the set A met the following conditions;

mod(d-a，(p/a)-1)＝0；

If subset B is empty, upgrading d is d-1, and again performs step one, otherwise, continue execution step three.

Step 3: obtain set C, wherein, c is corresponding one by one with the element b in subset B for set C interior element, and adopts following formula to be calculated;

c＝(d-b)/((p/b)-1)；

Step 4: the minimum value c that obtains set C interior element _min, and and c _minElement b in corresponding subset B _CminGet c _minFor the Loop Round Trip Time of transmission time interval (tti) bundle TTI Bundling transmission, get b _CminFor the continuous T TI number (TTI Bundling size) that uses in the transmission attempt of transmission time interval (tti) bundle TTI Bundling transmission primaries and get p/b _CminMaximum transmitted number of attempt for the transmission time interval (tti) bundle TTI Bundling transmission that allows.

Take d=50ms and p=20ms as example, and the common divisor set A is that { 1,2,5,10}, subset B is that { 5,10}, set C is { 15,40}, minimum value c _minBe 15, with c _minElement b in corresponding subset B _CminBe 5, therefore, the Loop Round Trip Time of transmission time interval (tti) bundle TTI Bundling transmission is 15ms, and the maximum transmitted number of attempt of the transmission time interval (tti) bundle TTI Bundling transmission that transmission time interval (tti) bundle TTI Bundling size is 5 TTI spans and permission is 4 times.

Take d=51ms and p=20ms as example, the common divisor set A be 1}, subset B is empty, upgrading d is 51-1=50ms, d=51ms and p=20ms example are equivalent to d=50ms and p=20ms example.

Suppose that network side (eNB) serves UE, and the up link VoIP business of this UE is activated, up link VoIP business air interface delay constraint is 50ms, and the VoIP packet is to take 20 TTI (being 20ms) periodically to arrive as the cycle.

As shown in Figure 3, transmission time interval (tti) bundle TTI Bundling transmission method comprises:

Step 1: user UE carries out the 1st transmission attempt of the 1st VoIP packet on the PUSCH of TTI 1 to TTI 5;

Step 2: network side (eNB) HARQ entity, on the descending PHICH of TTI 9, sends ACK/NACK and replys;

Step 3: if respective acknowledgement is ACK, reply, the 1st the VoIP data packet transmission of UE stops, otherwise UE carries out the 2nd transmission attempt of the 1st VoIP packet on the PUSCH of TTI 16 to TTI 20;

Step 4: network side (eNB) HARQ entity sends ACK/NACK and replys on the descending PHICH of TTI 24;

Step 5: if respective acknowledgement is ACK, reply, the 1st the VoIP data packet transmission of UE stops, otherwise UE carries out the 3rd transmission attempt of the 1st VoIP packet on the PUSCH of TTI 31 to TTI 35;

Step 6: network side (eNB) HARQ entity sends ACK/NACK and replys on the descending PHICH of TTI 39;

Step 7: if respective acknowledgement is ACK, reply, the 1st the VoIP data packet transmission of UE stops, otherwise UE carries out the 4th transmission attempt of the 1st VoIP packet on the PUSCH of TTI 46 to TTI 50;

Step 8: network side (eNB) HARQ entity sends ACK/NACK and replys on the descending PHICH of TTI 54.

So far, the transmission ending of the 1st of UE the VoIP packet.

User UE is carrying out the 1st VoIP packet n (n=1,2,3,4) before inferior transmission attempt, need to be according to the scope of the RV index of current support (as 0～4, or 0～3), and resource allocated size and the modulation scheme of the n time transmission attempt, all RV data of the n time transmission attempt of the 1st VoIP packet obtained.

Particularly, comprising:

(1) according to the scope of the RV index of current support, the predetermined bit position that obtains respectively each RV index, wherein, the RV index is corresponding one by one with the predetermined bit position.

(2), according to resource allocated size and the modulation scheme of the n time transmission attempt, obtain the total predetermined bit length of each RV index (predetermined bit length that each RV index is corresponding identical);

Particularly, L _N=Q _nN _nK, wherein, L _nMean the total predetermined bit length of each RV index of the n time transmission attempt, Q _nThe order of modulation that means the n time transmission attempt, N _nThe resource allocated size that means the n time transmission attempt, K means the data subcarrier number that each Resource Block comprises.

Preferably, Q _n=2; N _n=1, or, 2, or, 3, wherein, network side is to be that concrete N is determined in the n time transmission attempt of UE according to present load situation and quality of wireless channel _nValue; Usually, the network side load capacity is less and/or quality of wireless channel is poorer, the N chosen _nBe worth larger.

(3) obtain all RV data relevant with the n time transmission attempt of the 1st VoIP packet according to predetermined bit position and predetermined bit length.

Annotate: said process is equivalent to rate-matched (Rate Matching, referred to as RM).

Carry out the n (n=1 of the 1st VoIP packet, 2,3,4) inferior transmission attempt refers to from all RV data of the n time transmission attempt of the 1st VoIP packet, selection is no more than M RV data, and at least one TTI that selected each RV data are mapped to respectively in 5 continuous T TI that time transmission attempt is used is upper, wherein, M means the minimum value among the RV index number and 5 of current support.

Above-mentioned selection is no more than M RV data, and at least one TTI that each the RV data in selected M RV data are mapped to respectively in 5 continuous T TI that time transmission attempt is used is upper, comprising:

Be N in the RV index number, and N is not less than at 5 o'clock, selects 5 RV data, and, according to the sequencing of RV index, 5 RV data are mapped to respectively on 5 continuous T TI that time transmission attempt is used;

In the RV index number, be N, and N is for being less than at 5 o'clock, select N RV data, and according to the sequencing of RV index, N RV data are mapped to respectively to 5 continuous T TI that use when time transmission attempt upper, wherein, each RV data is at least on a TTI who is mapped in 5 continuous T TI, and, when the index of the first RV data of inferior transmission attempt continuous with the index of the tail RV data of transmission attempt last time.

Wherein, the RV index range of supposing current support is 0 to X, and the sequencing of described RV index is 0123......X0123......X0123......X0123......, i.e. 0 back that is positioned at X.

Return and reply to terminal on any one in 1st～10 TTI of network side after terminal completes a transmission attempt.The condition that the 1st VoIP data packet transmission stops comprises: reply accordingly and reply for sure ACK; Reached the maximum transmitted number of attempt (20/5=4) allowed.

More than so that being transmitted as of the 1st VoIP packet is routine, this method to be described, the individual VoIP packet of m (m>1) all can be transmitted by the way, the initial time of m data packet transmission is TTI 20* (m-1)+1, and need to before initial time, arrive.

Annotate: described subscriber equipment (UE) is equivalent to terminal.

Embodiment 1:

The RV index number of supposing current support is 5, be specially 0,1,2,3,4}, all RV data of the inferior transmission attempt of the n of the 1st VoIP packet (n=1,2,3,4) are expressed as:

$\{{\mathrm{RV}}_0^n,{\mathrm{RV}}_1^n,{\mathrm{RV}}_2^n,{\mathrm{RV}}_3^n,{\mathrm{RV}}_4^n\}.$

As shown in Figure 4, the inferior transmission attempt of n (n=1,2,3,4) of carrying out the 1st VoIP packet comprises:

Select 5 RV data of the 1st transmission attempt of the 1st VoIP packet, and 5 RV data are mapped to respectively on the TTI 01 to TTI 05 of the 1st transmission attempt according to the sequencing of RV index, particularly, the RV data relevant with TTI 01 to TTI 05 are respectively:

$\{{\mathrm{RV}}_0^1,{\mathrm{<figure-callout\; id="1"\; label="RV"\; filenames="HDA00001674009900022.png,HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_1^1,{\mathrm{<figure-callout\; id="2"\; label="RV"\; filenames="HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_2^1,{\mathrm{RV}}_3^1,{\mathrm{RV}}_4^1\};$

Select 5 RV data of the 2nd transmission attempt of the 1st VoIP packet, and 5 RV data are mapped to respectively on the TTI 16 to TTI 20 of the 2nd transmission attempt according to the sequencing of RV index, particularly, the RV data relevant with TTI 16 to TTI 20 are respectively:

$\{{\mathrm{RV}}_0^2,{\mathrm{<figure-callout\; id="1"\; label="RV"\; filenames="HDA00001674009900022.png,HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_1^2,{\mathrm{<figure-callout\; id="2"\; label="RV"\; filenames="HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_2^2,{\mathrm{RV}}_3^2,{\mathrm{RV}}_4^2\};$

Select 5 RV data of the 3rd transmission attempt of the 1st VoIP packet, and 5 RV data are mapped to respectively on the TTI 31 to TTI 35 of the 3rd transmission attempt according to the sequencing of RV index, particularly, the RV data relevant with TTI 31 to TTI 35 are respectively:

$\{{\mathrm{RV}}_0^3,{\mathrm{<figure-callout\; id="1"\; label="RV"\; filenames="HDA00001674009900022.png,HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_1^3,{\mathrm{<figure-callout\; id="2"\; label="RV"\; filenames="HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_2^3,{\mathrm{RV}}_3^3,{\mathrm{RV}}_4^3\};$

Select 5 RV data of the 4th transmission attempt of the 1st VoIP packet, and 5 RV data are mapped to respectively on the TTI 46 to TTI 50 of the 4th transmission attempt according to the sequencing of RV index, particularly, the RV data relevant with TTI 46 to TTI 50 are respectively:

$\{{\mathrm{RV}}_0^4,{\mathrm{<figure-callout\; id="1"\; label="RV"\; filenames="HDA00001674009900022.png,HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_1^4,{\mathrm{<figure-callout\; id="2"\; label="RV"\; filenames="HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_2^4,{\mathrm{RV}}_3^4,{\mathrm{RV}}_4^4\}.$

Embodiment 2:

The RV index number of supposing current support is 4, be specially 0,1,2,3}, all RV data of the inferior transmission attempt of the n of the 1st VoIP packet (n=1,2,3,4) are expressed as:

$\{{\mathrm{RV}}_0^n,{\mathrm{RV}}_1^n,{\mathrm{RV}}_2^n,{\mathrm{RV}}_3^n\}.$

As shown in Figure 5, the inferior transmission attempt of n (n=1,2,3,4) of carrying out the 1st VoIP packet comprises:

Select 4 RV data of the 1st transmission attempt of the 1st VoIP packet, and 4 RV data are mapped to respectively on the TTI 01 to TTI 05 of the 1st transmission attempt according to the sequencing of RV index, particularly, the RV data relevant with TTI 01 to TTI 05 are respectively:

$\{{\mathrm{RV}}_0^1,{\mathrm{<figure-callout\; id="1"\; label="RV"\; filenames="HDA00001674009900022.png,HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_1^1,{\mathrm{<figure-callout\; id="2"\; label="RV"\; filenames="HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_2^1,{\mathrm{RV}}_3^1,{\mathrm{RV}}_0^1\};$

Wherein, the RV data that index is 0 are mapped in 5 continuous T TI on two TTI (TTI 01 and TTI 05);

Select 4 RV data of the 2nd transmission attempt of the 1st VoIP packet, and 4 RV data are mapped to respectively on the TTI 16 to TTI 20 of the 2nd transmission attempt according to the sequencing of RV index, particularly, the RV data relevant with TTI 16 to TTI 20 are respectively:

$\{{\mathrm{<figure-callout\; id="1"\; label="RV"\; filenames="HDA00001674009900022.png,HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_1^2,{\mathrm{<figure-callout\; id="2"\; label="RV"\; filenames="HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_2^2,{\mathrm{RV}}_3^2,{\mathrm{RV}}_0^2,{\mathrm{<figure-callout\; id="1"\; label="RV"\; filenames="HDA00001674009900022.png,HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_1^2\};$

Wherein, the RV data that index is 1 are mapped in 5 continuous T TI on two TTI (TTI 16 and TTI 20), and the index 0 of the tail RV data of the index 1 of the first RV data of the 2nd transmission attempt and the 1st transmission attempt is continuous.

Select 4 RV data of the 3rd transmission attempt of the 1st VoIP packet, and 4 RV data are mapped to respectively on the TTI 31 to TTI 35 of the 3rd transmission attempt according to the sequencing of RV index, particularly, the RV data relevant with TTI 31 to TTI 35 are respectively:

$\{{\mathrm{<figure-callout\; id="2"\; label="RV"\; filenames="HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_2^3,{\mathrm{RV}}_3^3,{\mathrm{RV}}_0^3,{\mathrm{<figure-callout\; id="1"\; label="RV"\; filenames="HDA00001674009900022.png,HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_1^3,{\mathrm{<figure-callout\; id="2"\; label="RV"\; filenames="HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_2^3\};$

Wherein, the RV data that index is 2 are mapped in 5 continuous T TI on two TTI (TTI 31 and TTI 35), and the index 1 of the tail RV data of the index 2 of the first RV data of the 3rd transmission attempt and the 2nd transmission attempt is continuous.

Select 4 RV data of the 4th transmission attempt of the 1st VoIP packet, and 4 RV data are mapped to respectively on the TTI 46 to TTI 50 of the 4th transmission attempt according to the sequencing of RV index, particularly, the RV data relevant with TTI 46 to TTI 50 are respectively:

$\{{\mathrm{RV}}_3^4,{\mathrm{RV}}_0^4,{\mathrm{<figure-callout\; id="1"\; label="RV"\; filenames="HDA00001674009900022.png,HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_1^4,{\mathrm{<figure-callout\; id="2"\; label="RV"\; filenames="HDA00001674009900031.png"\; state="\{\{state\}\}">RV</figure-callout>}}_2^4,{\mathrm{RV}}_3^4\};$

Wherein, the RV data that index is 3 are mapped in 5 continuous T TI on two TTI (TTI 46 and TTI 50), and the index 2 of the tail RV data of the index 3 of the first RV data of the 4th transmission attempt and the 2nd transmission attempt is continuous.

As shown in Figure 6, present embodiment also provides a kind of transmission time interval (tti) bundle transmitting device, comprising: computing unit, parameter are chosen unit, data configuration unit and data transmission unit, wherein:

Computing unit, for before carrying out the transmission time interval (tti) bundle transmission, determine the set A that is less than the common divisor of p in the common divisor of arrival period p of air interface delay constraint d and packet, and meet mod (d-a in definite set A, (p/a)-1)=0 element, form subset B, wherein, a means the element in set A, and according to c=(d-b)/((p/b)-1), calculating is worth one to one with the element in subset B, form set C, wherein, c means to gather the element in C, and b means the element in subset B;

Parameter is chosen unit, for determining the minimum value c of the element of gathering C _min, and and c _minElement b in corresponding subset B _Cmin, in transmission time interval (tti) bundle transmission by b _CminAs the continuous T TI number used in a transmission attempt, and by c _minAs Loop Round Trip Time;

The data configuration unit, for configuring the redundancy versions data that will send packet;

Data transmission unit, for when transmitting a packet, is b according to the continuous T TI number used in a transmission attempt _Cmin, and Loop Round Trip Time is c _minSend the redundancy versions data of packet each transmission attempt.

Parameter is chosen unit, specifically for the d=50ms of interface delay restriction aloft, during the arrival period p of packet=20ms, determine in the transmission time interval (tti) bundle transmission, the continuous T TI number used in a transmission attempt is 5, Loop Round Trip Time is 15ms, to the maximum transmitted number of attempt of a packet, is 4.

Data transmission unit, be 5 specifically for the continuous T TI number according to using in a transmission attempt, and Loop Round Trip Time is 15ms, sends the redundancy versions data of packet each transmission attempt.

The data configuration unit, there is the scope for the redundancy versions according to current support (RV) index, obtain respectively the predetermined bit position of each RV index, according to resource allocated size and the modulation scheme when time transmission attempt, obtain the total predetermined bit length of each RV index, according to predetermined bit position and predetermined bit length, obtain packet in the whole RV data when time transmission attempt.

The data configuration unit is according to L _n=Q _nN _nK obtains the total predetermined bit length of each RV index, wherein, and L _nBe the total predetermined bit length of each RV index of the n time transmission attempt, Q _nBe the order of modulation of the n time transmission attempt, N _nBe the resource allocated size of the n time transmission attempt, the data subcarrier number that K comprises for each Resource Block.

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, perhaps 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, perhaps they are made into respectively to each integrated circuit modules, perhaps a plurality of modules in them or step being made into to the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.

Above this be 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 (15)

1. a transmission time interval (tti) bundle transmission method, is characterized in that, comprising:

Terminal is before carrying out the transmission time interval (tti) bundle transmission, determine the set A that is less than the common divisor of p in the common divisor of arrival period p of air interface delay constraint d and packet, and meet mod (d-a in definite set A, (p/a)-1)=0 element, form subset B, wherein, a means the element in set A, according to c=(d-b)/((p/b)-1), calculating is worth one to one with the element in subset B, forms set C, wherein, c means to gather the element in C, and b means the element in subset B;

Described terminal is determined the minimum value c of the element in set C _min, and and c _minElement b in corresponding subset B _Cmin, in the transmission time interval (tti) bundle transmission, by b _CminAs the continuous T TI number used in a transmission attempt, and by c _minAs Loop Round Trip Time;

Described terminal, when transmission one packet, is b according to the continuous T TI number used in a transmission attempt _Cmin, and Loop Round Trip Time is c _min, send the redundancy versions data of described packet each transmission attempt.

2. the method for claim 1, is characterized in that, also comprises:

While not meeting the element of mod (d-a, (p/a)-1)=0 in set A, upgrading air interface delay constraint d is d-1, and redefines the set A that is less than the common divisor of p in the common divisor of d and p.

3. the method for claim 1, is characterized in that, also comprises:

Determining and c _minElement b in corresponding subset B _CminAfter, get p/b _CminAs in transmission time interval (tti) bundle transmission to the maximum transmitted number of attempt of a packet.

4. method as claimed in claim 3 is characterized in that:

The d=50ms of interface delay restriction aloft, during the arrival period p of packet=20ms, determine that the continuous T TI number used in a transmission attempt is 5 in the transmission time interval (tti) bundle transmission, Loop Round Trip Time is 15ms, and is 4 to the maximum transmitted number of attempt of a packet.

5. method as claimed in claim 4, is characterized in that, according to the continuous T TI number used in a transmission attempt, is b _Cmin, and Loop Round Trip Time is c _min, send the redundancy versions data of described packet each transmission attempt, comprising:

Described terminal is 5 according to the continuous T TI number used in a transmission attempt, and Loop Round Trip Time is 15ms, sends the redundancy versions data of described packet each transmission attempt.

6. method as claimed in claim 5, is characterized in that, also comprises: send described packet before the redundancy versions data of each transmission attempt, also comprise:

Described terminal is according to the scope of redundancy versions (RV) index of current support, and the predetermined bit position that obtains respectively each RV index, according to resource allocated size and the modulation scheme when time transmission attempt, obtain the total predetermined bit length of each RV index;

Described terminal is obtained described packet in the whole RV data when time transmission attempt according to described predetermined bit position and predetermined bit length.

7. method as claimed in claim 6, is characterized in that, according to resource allocated size and the modulation scheme when time transmission attempt, obtains the total predetermined bit length of each RV index, comprising:

According to L _n=Q _nN _nK obtains the total predetermined bit length of each RV index, wherein, and L _nMean the total predetermined bit length of each RV index of the n time transmission attempt, Q _nThe order of modulation that means the n time transmission attempt, N _nThe resource allocated size that means the n time transmission attempt, K means the data subcarrier number that each Resource Block comprises.

8. method as claimed in claim 6, is characterized in that, sends the redundancy versions data of described packet each transmission attempt, comprising:

Described terminal from described when whole RV data of time transmission attempt, selection is no more than M RV data, and selected each RV data are mapped to respectively at least one TTI in 5 continuous T TI that time transmission attempt is used, wherein, M means the minimum value among the RV index number and 5 of current support.

9. method as claimed in claim 8, is characterized in that, selects to be no more than M RV data, and at least one TTI that selected each RV data are mapped to respectively in 5 continuous T TI that time transmission attempt is used is upper, comprising:

Be N in described RV index number, and N is not less than at 5 o'clock, selects 5 RV data, and, according to the sequencing of RV index, described 5 RV data are mapped to respectively on 5 continuous T TI that time transmission attempt is used;

In described RV index number, be N, and N is for being less than at 5 o'clock, select N RV data, and according to the sequencing of RV index, described N RV data are mapped to respectively to 5 continuous T TI that use when time transmission attempt upper, wherein, each RV data is at least on a TTI who is mapped in 5 continuous T TI, and, when the index of the first RV data of inferior transmission attempt continuous with the index of the tail RV data of transmission attempt last time.

10. method as claimed in claim 6, is characterized in that, also comprises:

Return and reply to terminal on any one in 1st～10 TTI of network side after described terminal completes a transmission attempt.

11. a transmission time interval (tti) bundle transmitting device, is characterized in that, comprising: computing unit, parameter are chosen unit, data configuration unit and data transmission unit, wherein:

Described computing unit, for before carrying out the transmission time interval (tti) bundle transmission, determine the set A that is less than the common divisor of p in the common divisor of arrival period p of air interface delay constraint d and packet, and meet mod (d-a in definite set A, (p/a)-1)=0 element, form subset B, wherein, a means the element in set A, and according to c=(d-b)/((p/b)-1), calculating is worth one to one with the element in subset B, form set C, wherein, c means to gather the element in C, and b means the element in subset B;

Described parameter is chosen unit, for determining the minimum value c of the element of gathering C _min, and and c _minElement b in corresponding subset B _Cmin, in transmission time interval (tti) bundle transmission by b _CminAs the continuous T TI number used in a transmission attempt, and by c _minAs Loop Round Trip Time;

Described data configuration unit, for configuring the redundancy versions data that will send packet;

Described data transmission unit, for when transmitting a packet, is b according to the continuous T TI number used in a transmission attempt _Cmin, and Loop Round Trip Time is c _min, send the redundancy versions data of described packet each transmission attempt.

12. device as claimed in claim 11 is characterized in that:

Described parameter is chosen unit, specifically for the d=50ms of interface delay restriction aloft, during the arrival period p of packet=20ms, determine in the transmission time interval (tti) bundle transmission, the continuous T TI number used in a transmission attempt is 5, Loop Round Trip Time is 15ms, to the maximum transmitted number of attempt of a packet, is 4.

13. device as claimed in claim 12 is characterized in that:

Described data transmission unit, be 5 specifically for the continuous T TI number according to using in a transmission attempt, and Loop Round Trip Time is 15ms, sends the redundancy versions data of described packet each transmission attempt.

14. device as claimed in claim 13 is characterized in that:

Described data configuration unit, there is the scope for the redundancy versions according to current support (RV) index, obtain respectively the predetermined bit position of each RV index, according to resource allocated size and the modulation scheme when time transmission attempt, obtain the total predetermined bit length of each RV index, according to described predetermined bit position and predetermined bit length, obtain described packet in the whole RV data when time transmission attempt.

15. device as claimed in claim 14 is characterized in that:

Described data configuration unit, have for according to L _n=Q _nN _nK obtains the total predetermined bit length of each RV index, wherein, and L _nBe the total predetermined bit length of each RV index of the n time transmission attempt, Q _nBe the order of modulation of the n time transmission attempt, N _nBe the resource allocated size of the n time transmission attempt, the data subcarrier number that K comprises for each Resource Block.

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