CN101459466B - Data transmission method and apparatus - Google Patents
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- CN101459466B CN101459466B CN 200710179333 CN200710179333A CN101459466B CN 101459466 B CN101459466 B CN 101459466B CN 200710179333 CN200710179333 CN 200710179333 CN 200710179333 A CN200710179333 A CN 200710179333A CN 101459466 B CN101459466 B CN 101459466B
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Abstract
The invention discloses three data transmission methods and a data transmission device, wherein one of the data transmission methods comprises distributing the time frequency resource in a preset frequency band on a downlink pilot frequency DwPTS and or a first sub frame SF0 to a synchronous channel SCH and or a broadcasting channel BCH, distributing the time frequency resource of N symbols in the frequency band of an uplink pilot frequency UpPTS, which are different from the SCH and or BCH into an uplink random accessing channel PRACH, wherein M is an integer larger than or equal to 1, and N is an integer larger or equal to 0, and conducting the data transmission through utilizing the wireless semi-frame of the distributed resource. The technical scheme provided by the invention can reduce the interference of the downstream date to the upstream data among base stations.
Description
Technical field
The present invention relates to Long Term Evolution (LTE) system, relate in particular to data transmission method and device in long evolving system.
Background technology
Long Term Evolution (Long TermEvolution at 3-G (Generation Three mobile communication system) (3G) wireless interface technology, LTE) support 2 class frame structures in research project: first kind frame structure, be applicable to Frequency Division Duplexing (FDD) (FDD) and TDD system, frame length is 10ms, 20 time slots that are 0.5ms by length form, and every two continuous time slots are defined as a subframe; The Equations of The Second Kind frame structure, be only applicable to the TDD system, frame length is also 10ms, the radio half frame that it is 5ms that each radio frames is divided into 2 length, structure in the structure of each field and FDD system is similar, comprise that 10 length are the business time-slot of 0.5ms (slot), every two continuous time slots are defined as a subframe (being the 1ms subframe in the FDD system).Wherein, second fixing special time slot that is used as of subframe, the structure of special time slot comprises descending pilot frequency (DwPTS) as shown in Figure 1, protection interval (GP) and three channels of ascending pilot frequency (UpPTS).Wherein, the time-frequency resource allocating in DwPTS is used for the transmission down-bound pilot frequency signal to primary synchronization channel (P-SCH), and the time-frequency resource allocating in UpPTS accesses channel (PRACH) to uplink random, is used for the transmission uplink pilot signal.Wherein, the length of DwPTS, GP, UpPTS is all adjustable.In addition, the running time-frequency resource in first subframe (SF0) can be distributed to auxiliary synchronization channel (S-SCH) and broadcast channel (BCH), and generally, S-SCH and P-SCH are positioned at same frequency range.Sometimes, S-SCH also can be arranged in DwPTS, and namely the running time-frequency resource in DwPTS also can be distributed to S-SCH, and perhaps BCH also can be arranged in DwPTS sometimes, and P-SCH, S-SCH and BCH all can be arranged in SF0 in some cases.
Wherein, GP is mainly used in avoiding with the interference in the ranks of residential quarter up/down.But find in practical application, the descending transmission of adjacent base station or farther base station also can cause to the uplink receiving of this residential quarter certain interference.For example; when having the direct projection footpath between two base stations; a little less than decay due to signal; if this moment two base station wide aparts; surpass the protection of GP (with radius of society as a reference) as distance, the descending transmission meeting of the other side base station causes interference to the uplink receiving that carries out the base station of uplink receiving.
Summary of the invention
In view of this, a kind of data transmission method and a kind of data transmission device are provided in the present invention, in order to reduce the interference of downlink data to upstream data between the base station.
In addition, a kind of data transmission method and a kind of data transmission device are also provided in the present invention, in order to reduce the interference between upstream data in special time slot.
At last, a kind of data transmission method and a kind of data transmission device are also provided in the present invention, in order to reduce the interference between upstream data in special time slot.
The first data transmission method provided by the present invention comprises:
In radio half frame, time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, is accessed channel PRACH with the time-frequency resource allocating that is different from described SCH and/or BCH in ascending pilot frequency UpPTS and takies N symbol in the frequency range of frequency range to uplink random; Wherein, N is the integer more than or equal to 0;
Utilize the radio half frame of described Resources allocation to carry out transfer of data.
Wherein, the default frequency range in described DwPTS and/or SF0 is: any frequency range of the center in DwPTS and/or SF0 and/or other position.
Wherein, being different from N the symbol that described SCH and/or BCH take in the frequency range of frequency range in described UpPTS is: be different from rear N the interior symbol of frequency range that described SCH and/or BCH take frequency range in UpPTS.
Preferably; the method further comprises: will be different from described SCH and/or BCH in UpPTS and take the time-frequency resource allocating of front L symbol in the frequency range of frequency range to upstream data; will be except the running time-frequency resource of other symbol of a described rear N symbol and described front L outer symbol as additional protection interval; wherein; L is the integer more than or equal to 0, L and N's and less than or equal to the total number of symbols in UpPTS.
Wherein, being different from N the symbol that described SCH and/or BCH take in the frequency range of frequency range in described UpPTS is: be different from the interior top n symbol of frequency range that described SCH and/or BCH take frequency range in UpPTS.
Preferably, the method further comprises: be different from described SCH and/or BCH in UpPTS and take in the frequency range of frequency range except the time-frequency resource allocating of other symbol of described top n outer symbol to upstream data.
Preferably, the method further comprises: with in DwPTS or SF0 with the running time-frequency resource of rear K symbol in described PRACH takies the identical frequency range of frequency range as additional protection interval, K is the integer more than or equal to 1.
The first data transmission device provided by the present invention comprises:
Resource allocation unit, be used in radio half frame, time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, is accessed channel PRACH with the time-frequency resource allocating that is different from described SCH and/or BCH in ascending pilot frequency UpPTS and takies N symbol in the frequency range of frequency range to uplink random; Wherein, N is the integer more than or equal to 0;
Data transmission unit is used for utilizing the radio half frame of described Resources allocation to carry out transfer of data.
The second data transmission method provided by the present invention comprises:
In radio half frame, with the time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of top n symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH; Wherein, N is the integer more than or equal to 0;
Utilize the radio half frame of described Resources allocation to carry out transfer of data.
Preferably, the method further comprises: with in ascending pilot frequency UpPTS with in described P-SCH takies the identical frequency range of frequency range except the time-frequency resource allocating of other symbol of described top n outer symbol to upstream data.
The second data transmission device provided by the present invention comprises:
Resource allocation unit, be used in radio half frame, with the time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of top n symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH; Wherein, N is the integer more than or equal to 0;
Data transmission unit is used for utilizing the radio half frame of described Resources allocation to carry out transfer of data.
The third data transmission method provided by the present invention comprises:
In radio half frame, with the time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of rear N symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH, the time-frequency resource allocating of a front L symbol is to upstream data, will be except the running time-frequency resource of other symbol of a described rear N symbol and described front L outer symbol as additional protection interval; Wherein, N, L are the integer more than or equal to 0, and L and N's and less than or equal to the total number of symbols in UpPTS;
Utilize the radio half frame of described Resources allocation to carry out transfer of data.
Preferably, the method further comprises: with in DwPTS or SF0 with the running time-frequency resource of rear K symbol in described PRACH takies the identical frequency range of frequency range as additional protection interval, K is the integer more than or equal to 1.
The third data transmission device provided by the present invention comprises:
Resource allocation unit, be used in radio half frame, with the time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of rear N symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH, the time-frequency resource allocating of a front L symbol is to upstream data, will be except the running time-frequency resource of other symbol of a described rear N symbol and described front L outer symbol as additional protection interval; Wherein, N, L are the integer more than or equal to 0, and L and N's and less than or equal to the total number of symbols in UpPTS;
Data transmission unit is used for utilizing the radio half frame of described Resources allocation to carry out transfer of data.
Can find out from such scheme, in the present invention by causing the synchronous channel SCH (P-SCH and S-SCH) of interference and/or BCH to distribute the running time-frequency resource of different frequency range for PRACH with to PRACH in radio half frame, make enough large distance is arranged between PRACH and SCH and/or BCH, reduce SCH between the base station and/or BCH to the interference of PRACH, thereby reduced the interference of downlink data to upstream data between the base station.
Further; by with the allocation of symbols except PRACH in UpPTS to upstream data; can fully be beneficial to the running time-frequency resource in special time slot; and when PRACH be positioned at UpPTS after several symbols; and upstream data is when being positioned at before PRACH; additional protection interval can be set, to avoid upstream data to the interference of PRACH between upstream data and PRACH.In addition; can also protect the interval by increase; the protection interval namely is set in the symbol before PRACH and/or arranges in the several symbols in the back of DwPTS and protect the interval; further SCH and/or the BCH interference to PRACH between the reduction base station, thus the interference of downlink data to upstream data between the base station reduced.
In addition, in the present invention when SCH and/or BCH and PRACH are placed in same frequency range, by with several allocation of symbols of front in UpPTS to PRACH, and several allocation of symbols of back to upstream data, thereby reduced the interference that when in the prior art, upstream data being placed in before PRACH, PRACH is caused.
At last, when SCH and/or BCH and PRACH are placed in same frequency range, by adding additional protection interval at PRACH and between the upstream data before being positioned at PRACH, be positioned at thereby reduced the interference that the upstream data before PRACH causes PRACH in the present invention.Perhaps directly the upstream data before PRACH is removed, and with this part running time-frequency resource as additional protection interval, reduced and be positioned at the interference that PRACH upstream data before causes PRACH.
Further, by the protection interval is set in the several symbols in the back of DwPTS, further reduce SCH between the base station and/or BCH to the interference of PRACH, thereby reduced the interference of downlink data to upstream data between the base station.
Description of drawings
Fig. 1 is the structural representation of special time slot in prior art;
Fig. 2 (a) to Fig. 2 (f) be the structural representation of the special time slot in one embodiment of the invention;
Fig. 3 is the structural representation of the data transmission device in one embodiment of the invention;
Fig. 4 (a) to Fig. 4 (c) be the structural representation of the special time slot in another embodiment of the present invention;
Fig. 5 (a) is to the structural representation of Fig. 5 (c) for the special time slot in another embodiment of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in more detail.
In the present invention, consider in the descending transmission of adjacent base station or farther base station, (P-SCH and S-SCH) is mainly used in carrying out Cell searching due to synchronous channel SCH, the user obtains residential quarter intensity by measuring SCH, and then select wish to access the residential quarter to complete access, therefore SCH is once needing to cover full residential quarter in transmission, so transmitting power is stronger, the interference that correspondingly uplink receiving of this residential quarter is caused is larger; In addition, BCH is because needs cover full residential quarter with broadcast, so transmitting power is stronger, the interference that correspondingly uplink receiving of this residential quarter is caused is also larger; And other transfer of data in descending transmission is controlled its transmitting power owing to retransmitting etc. by scheduling/power HARQ, therefore transmitting power can be lower than SCH and BCH, the interference meeting that correspondingly uplink receiving of this residential quarter is caused is little than SCH and BCH, as seen, SCH and BCH are for causing the principal element of interference to uplink receiving.
Wherein, descending transmission has the greatest impact to PRACH's in uplink receiving, because PRACH is mainly used in user's access, this moment, this user's data were not carried out synchronously, and owing to there is no the mechanism such as power control and HARQ re-transmission, if this moment, PRACH was interfered, the user will complete access.
In prior art, SCH, BCH and PRACH are dispensed on identical frequency range and transmit, and therefore SCH, the BCH of adjacent base station or farther base station can cause larger interference to the PRACH of this residential quarter.For this reason, in the embodiment of the present invention, when SCH and BCH are positioned at same frequency range, SCH, BCH and PRACH are distributed on different frequency ranges transmit; When SCH and BCH are positioned at different frequency range, SCH, BCH and PRACH can be distributed on different frequency ranges and transmit, also any one or any two and the PRACH in P-SCH, S-SCH, BCH can be distributed on different frequency ranges and transmit.
During specific implementation, data transmission method in one embodiment of the invention can be: in radio half frame, time-frequency resource allocating in default frequency range in DwPTS and/or SF0 to SCH and BCH, will be different from described SCH and/or BCH and take the time-frequency resource allocating of N symbol in the frequency range of frequency range to PRACH in UpPTS.Wherein, N is the integer more than or equal to 0.Afterwards, utilize the radio half frame of described Resources allocation to carry out transfer of data.When N=0, the running time-frequency resource in UpPTS is not distributed to PRACH, and this moment can be with the time-frequency resource allocating of the TTI after special time slot to PRACH.
wherein, SCH and BCH can be positioned at same frequency range, also can be positioned at different frequency range, and SCH and BCH can be arranged in DwPTS simultaneously, also can be arranged in simultaneously SF0, perhaps also can partly be positioned at SF0, part is arranged in DwPTS, be arranged in front several symbols of DwPTS as the P-SCH in SCH, S-SCH in SCH is positioned at rear several symbols of SF0, BCH is positioned at the several symbols before S-SCH etc., be that in DwPTS and/or SF0, the running time-frequency resource in default frequency range can be to distribute to P-SCH according to the distribution method of prior art, the running time-frequency resource of S-SCH and BCH, it can be also the running time-frequency resource that distributes according to other distribution method, this running time-frequency resource can be the running time-frequency resource of M symbol of the interior optional position of default frequency range in DwPTS and/or SF0, and default frequency range wherein can be center in DwPTS and/or SF0 and/or any frequency range of other position.
Wherein, being different from described SCH and/or BCH in UpPTS, to take N symbol in the frequency range of frequency range can be to be different from N the symbol that SCH and/or BCH take rear N interior symbol of the frequency range of frequency range or top n symbol or other optional position in UpPTS.
In addition, in UpPTS except PRACH, can also transmit ascending data.In the present embodiment; when an above-mentioned N symbol is rear N symbol in frequency range; further; also can will be different from described SCH and/or BCH in UpPTS and take the time-frequency resource allocating of front L symbol in the frequency range of frequency range to upstream data; will be except the running time-frequency resource of other symbol of a described rear N symbol and described front L outer symbol as additional protection interval; wherein, L is the integer more than or equal to 0, L and N's and less than or equal to the total number of symbols in UpPTS.When L=0, except the running time-frequency resource of other symbol of a described rear N outer symbol all as the protection interval that adds.
Wherein, when an above-mentioned N symbol is top n symbol in frequency range, further, also can be different from described SCH and/or BCH in UpPTS and take in the frequency range of frequency range except the time-frequency resource allocating of other symbol of described top n outer symbol to upstream data.
In addition; also can be further with in DwPTS with the running time-frequency resource of rear K symbol in described PRACH takies the identical frequency range of frequency range as additional protection interval; wherein, K is the integer more than or equal to 1, and K and M's and less than or equal to the total number of symbols in DwPTS and/or SF0.
Below, only be described as an example of P-SCH example, similar with it for the situation of other P-SCH and/or BCH and/or S-SCH.Suppose in special time slot, the length of DwPTS is 6 symbols, the length of GP is 3 symbols, the length of UpPTS is that the situation of 5 symbols is example, and hypothesis P-SCH takies 1 symbol, and PRACH takies two symbols (N=2), and with first allocation of symbols of DwPTS center frequency range to P-SCH, referring to Fig. 2 (a) to Fig. 2 (f), Fig. 2 (a) to Fig. 2 (f) be the structural representation of the special time slot in the present embodiment.
In Fig. 2 (a), upside in UpPTS is different from the time-frequency resource allocating of latter two symbol in the frequency range of the shared frequency range of P-SCH to PRACH.
In Fig. 2 (b); upside in UpPTS is different from the time-frequency resource allocating of the previous symbol in the frequency range of the shared frequency range of P-SCH to upstream data, will be except the running time-frequency resource of second and the 3rd symbol of previous symbol and latter two outer symbol as additional protection interval.
In Fig. 2 (c), upside in UpPTS is different from the frequency range of the shared frequency range of P-SCH running time-frequency resource except first to the 3rd symbol of latter two outer symbol as the protection interval that adds, i.e. L=0.
Fig. 2 (d) on the basis of Fig. 2 (c), with the running time-frequency resource of upside in DwPTS and rear 3 symbols in PRACH takies the identical frequency range of frequency range as additional protection interval, i.e. K=3.
In Fig. 2 (e), upside in UpPTS is different from the time-frequency resource allocating of the first two symbol in the frequency range of the shared frequency range of P-SCH to PRACH.
In Fig. 2 (f), upside in UpPTS is different from the frequency range of the shared frequency range of P-SCH running time-frequency resource except the 3rd to the 5th symbol of the first two outer symbol as the protection interval that adds.
Data transmission method in corresponding the present embodiment, the internal structure of the data transmission device in the present embodiment can as shown in Figure 3, comprise: resource allocation unit and data transmission unit.
Wherein, resource allocation unit is used in radio half frame, time-frequency resource allocating in default frequency range in DwPTS and/or SF0 to SCH and BCH, is accessed channel PRACH with the time-frequency resource allocating that is different from described SCH and/or BCH in ascending pilot frequency UpPTS and takies N symbol in the frequency range of frequency range to uplink random; Wherein, N is the integer more than or equal to 0.
Data transmission unit is used for utilizing the radio half frame of described Resources allocation to carry out transfer of data.
Wherein, resource allocation unit is timing in concrete minute, can be consistent with the distribution method described in data transmission method in the present embodiment, give unnecessary details no longer one by one herein.
In addition, in prior art, when SCH and/or BCH and PRACH are dispensed on and transmit on identical frequency range, usually PRACH is distributed in rear several symbols of UpPTS, and with the allocation of symbols before PRACH to upstream data.At this moment, because the user who uses PRACH to access not yet carries out uplink synchronous, the upstream data that is positioned at before PRACH can cause interference to PRACH user, when upstream data is more serious to the interference ratio of PRACH, may cause system can't carry out normal PRACH access.
Consider that PRACH can compensate by the HARQ re-transmission of data the interference that is positioned at upstream data thereafter.Therefore the data transmission method in another embodiment of the present invention can be: in radio half frame, with the time-frequency resource allocating in default frequency range in DwPTS and/or SF0 to SCH and BCH, with in UpPTS with the time-frequency resource allocating of top n symbol in described SCH and/or BCH take the identical frequency range of frequency range to PRACH; Wherein, N is the integer more than or equal to 0; Utilize the radio half frame of described Resources allocation to carry out transfer of data.Wherein, when N=0, the running time-frequency resource in UpPTS is not distributed to PRACH, and this moment can be with the time-frequency resource allocating of the TTI after special time slot to PRACH.
Further, with in UpPTS with in described SCH and/or BCH take the identical frequency range of frequency range except the time-frequency resource allocating of other symbol of described top n outer symbol to upstream data.
Wherein, running time-frequency resource in DwPTS and/or SF0 in default frequency range can be to distribute to the running time-frequency resource of P-SCH, S-SCH and BCH according to the distribution method of prior art, it can be also the running time-frequency resource that distributes according to other distribution method, this running time-frequency resource can be the running time-frequency resource of M symbol of the optional position in default frequency range in DwPTS and/or SF0, and default frequency range wherein can be center in DwPTS and/or SF0 and/or any frequency range of other position.
In addition; also can be further with in DwPTS or SF0 with the running time-frequency resource of rear K symbol in described PRACH takies the identical frequency range of frequency range as additional protection interval; wherein, K is the integer more than or equal to 1, and K and M's and less than or equal to the total number of symbols in DwPTS and/or SF0.
Below, only be described as an example of P-SCH example, similar with it for the situation of other P-SCH and/or BCH and/or S-SCH.The length of still supposing DwPTS in special time slot is 6 symbols, the length of GP is 3 symbols, the length of UpPTS is that the situation of 5 symbols is example, and hypothesis P-SCH takies 1 symbol, PRACH takies two symbols (N=2), and with first allocation of symbols of DwPTS center frequency range to P-SCH, referring to Fig. 4 (a) to Fig. 4 (c), Fig. 4 (a) to Fig. 4 (c) be the structural representation of the special time slot in the present embodiment.
In Fig. 4 (a), with in UpPTS with the time-frequency resource allocating of the first two symbol in P-SCH takies the identical frequency range of frequency range to PRACH.
In Fig. 4 (b), with in UpPTS with in P-SCH takies the identical frequency range of frequency range except the time-frequency resource allocating of the 3rd to the 5th symbol of the first two outer symbol to upstream data.
Fig. 4 (c) on the basis of Fig. 4 (b), with in DwPTS with the running time-frequency resource of rear 3 symbols in PRACH takies the identical frequency range of frequency range as additional protection interval, i.e. K=3.
Data transmission method in corresponding the present embodiment, the internal structure of the data transmission device in the present embodiment can be consistent with the internal structure of device shown in Figure 3, namely also comprises resource allocation unit and data transmission unit.
Wherein, resource allocation unit is used in radio half frame, with the time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or SF0 to SCH and BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of top n symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH; Wherein, N is the integer more than or equal to 0.
Data transmission unit is used for utilizing the radio half frame of described Resources allocation to carry out transfer of data.
Wherein, resource allocation unit is timing in concrete minute, can be consistent with the distribution method described in data transmission method in the present embodiment, give unnecessary details no longer one by one herein.
in addition, in prior art, SCH, when BCH and PRACH are dispensed on and transmit on identical frequency range, and PRACH is distributed in rear several symbols of UpPTS, in the situation of allocation of symbols to upstream data before PRACH, consider that being positioned at PRACH upstream data before causes the situation of interference to PRACH, data transmission method in another embodiment of the present invention can be: in radio half frame, with the time-frequency resource allocating in default frequency range in DwPTS and/or SF0 to SCH and BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of rear N symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH, the time-frequency resource allocating of a front L symbol is to upstream data, will be except the running time-frequency resource of other symbol of a described rear N symbol and described front L outer symbol as additional protection interval.Wherein, N, L are the integer more than or equal to 0, and L and N's and less than or equal to the total number of symbols in UpPTS.Utilize the radio half frame of described Resources allocation to carry out transfer of data.When N=0, the running time-frequency resource in UpPTS is not distributed to PRACH, and this moment can be with the time-frequency resource allocating of the TTI after special time slot to PRACH.When L=0, except the running time-frequency resource of other symbol of a described rear N outer symbol all as the protection interval that adds.
Wherein, running time-frequency resource in DwPTS and/or SF0 in default frequency range can be to distribute to the running time-frequency resource of P-SCH, S-SCH and BCH according to the distribution method of prior art, it can be also the running time-frequency resource that distributes according to other distribution method, this running time-frequency resource can be the running time-frequency resource of M symbol of optional position in default frequency range in DwPTS and/or SF0, and default frequency range wherein can be center in DwPTS and/or SF0 and/or any frequency range of other position.
In addition; the method can be further; with in DwPTS or SF0 with the running time-frequency resource of rear K symbol in described PRACH takies the identical frequency range of frequency range as additional protection interval, K is the integer more than or equal to 1, and K and M's and less than or equal to the total number of symbols in DwPTS and/or SF0.
Below, only be described as an example of P-SCH example, similar with it for the situation of other P-SCH and/or BCH and/or S-SCH.Suppose in special time slot, the length of DwPTS is 6 symbols, the length of GP is 3 symbols, the length of UpPTS is that the situation of 5 symbols is example, and hypothesis P-SCH takies 1 symbol, and PRACH takies two symbols (N=2), and with first allocation of symbols of DwPTS center frequency range to P-SCH, referring to Fig. 5 (a) to Fig. 5 (b), Fig. 5 (a) to Fig. 5 (b) be the structural representation of the special time slot in the present embodiment.
In Fig. 5 (a); with the time-frequency resource allocating of the previous symbol in frequency range identical with the shared frequency range of P-SCH in UpPTS to upstream data, will be except the running time-frequency resource of second and the 3rd symbol of previous symbol and latter two outer symbol as additional protection interval.
In Fig. 5 (b), with in frequency range identical with the shared frequency range of P-SCH in UpPTS except the running time-frequency resource of first to the 3rd symbol of latter two outer symbol as the protection interval that adds, i.e. L=0.
Fig. 5 (c) on the basis of Fig. 5 (b), with in DwPTS with the running time-frequency resource of rear 3 symbols in PRACH takies the identical frequency range of frequency range as additional protection interval, i.e. K=3.
Data transmission method in corresponding the present embodiment, the internal structure of the data transmission device in the present embodiment can be consistent with the internal structure of device shown in Figure 3, namely also comprises resource allocation unit and data transmission unit.
Wherein, resource allocation unit is used in radio half frame, with the time-frequency resource allocating in default frequency range in DwPTS and/or SF0 to P-SCH and BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of rear N symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH, the time-frequency resource allocating of a front L symbol is to upstream data, will be except the running time-frequency resource of other symbol of a described rear N symbol and described front L outer symbol as additional protection interval; Wherein, N, L are the integer more than or equal to 0, and L and N's and less than or equal to the total number of symbols in UpPTS.
Data transmission unit is used for utilizing the radio half frame of described Resources allocation to carry out transfer of data.
Wherein, resource allocation unit is timing in concrete minute, can be consistent with the distribution method described in data transmission method in the present embodiment, give unnecessary details no longer one by one herein.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above is only preferred embodiment of the present invention; be not for limiting protection scope of the present invention; 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 (14)
1. a data transmission method, is characterized in that, the method comprises:
In radio half frame, time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, is accessed channel PRACH with the time-frequency resource allocating that is different from described SCH and/or BCH in ascending pilot frequency UpPTS and takies N symbol in the frequency range of frequency range to uplink random; Wherein, N is the integer more than or equal to 0;
Utilize the radio half frame of described Resources allocation to carry out transfer of data.
2. the method for claim 1, is characterized in that, the default frequency range in described DwPTS and/or SF0 is: any frequency range of the center in DwPTS and/or SF0 and/or other position.
3. the method for claim 1, is characterized in that, is different from N the symbol that described SCH and/or BCH take in the frequency range of frequency range in described UpPTS to be: be different from rear N the interior symbol of frequency range that described SCH and/or BCH take frequency range in UpPTS.
4. method as claimed in claim 3; it is characterized in that; the method further comprises: will be different from described SCH and/or BCH in UpPTS and take the time-frequency resource allocating of front L symbol in the frequency range of frequency range to upstream data; will be except the running time-frequency resource of other symbol of a described rear N symbol and described front L outer symbol as additional protection interval; wherein; L is the integer more than or equal to 0, L and N's and less than or equal to the total number of symbols in UpPTS.
5. the method for claim 1, is characterized in that, is different from N the symbol that described SCH and/or BCH take in the frequency range of frequency range in described UpPTS to be: be different from the interior top n symbol of frequency range that described SCH and/or BCH take frequency range in UpPTS.
6. method as claimed in claim 5, is characterized in that, the method further comprises: be different from described SCH and/or BCH in UpPTS and take in the frequency range of frequency range except the time-frequency resource allocating of other symbol of described top n outer symbol to upstream data.
7. method as described in any one in claim 1 to 6; it is characterized in that; the method further comprises: with in DwPTS or SF0 with the running time-frequency resource of rear K symbol in described PRACH takies the identical frequency range of frequency range as additional protection interval, K is the integer more than or equal to 1.
8. a data transmission device, is characterized in that, this device comprises:
Resource allocation unit, be used in radio half frame, time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, is accessed channel PRACH with the time-frequency resource allocating that is different from described SCH and/or BCH in ascending pilot frequency UpPTS and takies N symbol in the frequency range of frequency range to uplink random; Wherein, N is the integer more than or equal to 0;
Data transmission unit is used for utilizing the radio half frame of described Resources allocation to carry out transfer of data.
9. a data transmission method, is characterized in that, the method comprises:
In radio half frame, with the time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of top n symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH; Wherein, N is the integer more than or equal to 0;
Utilize the radio half frame of described Resources allocation to carry out transfer of data.
10. method as claimed in claim 9, is characterized in that, the method further comprises: with in ascending pilot frequency UpPTS with in P-SCH takies the identical frequency range of frequency range except the time-frequency resource allocating of other symbol of described top n outer symbol to upstream data.
11. a data transmission device is characterized in that, this device comprises:
Resource allocation unit, be used in radio half frame, with the time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of top n symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH; Wherein, N is the integer more than or equal to 0;
Data transmission unit is used for utilizing the radio half frame of described Resources allocation to carry out transfer of data.
12. a data transmission method is characterized in that, the method comprises:
In radio half frame, with the time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of rear N symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH, the time-frequency resource allocating of a front L symbol is to upstream data, will be except the running time-frequency resource of other symbol of a described rear N symbol and described front L outer symbol as additional protection interval; Wherein, N, L are the integer more than or equal to 0, and L and N's and less than or equal to the total number of symbols in UpPTS;
Utilize the radio half frame of described Resources allocation to carry out transfer of data.
13. method as claimed in claim 12; it is characterized in that; the method further comprises: with in DwPTS or SF0 with the running time-frequency resource of rear K symbol in described PRACH takies the identical frequency range of frequency range as additional protection interval, K is the integer more than or equal to 1.
14. a data transmission device is characterized in that, this device comprises:
Resource allocation unit, be used in radio half frame, with the time-frequency resource allocating in default frequency range in descending pilot frequency DwPTS and/or first subframe SF0 to synchronous channel SCH and broadcast channel BCH, with in ascending pilot frequency UpPTS with the time-frequency resource allocating of rear N symbol in described SCH and/or BCH take the identical frequency range of frequency range to uplink random access channel PRACH, the time-frequency resource allocating of a front L symbol is to upstream data, will be except the running time-frequency resource of other symbol of a described rear N symbol and described front L outer symbol as additional protection interval; Wherein, N, L are the integer more than or equal to 0, and L and N's and less than or equal to the total number of symbols in UpPTS;
Data transmission unit is used for utilizing the radio half frame of described Resources allocation to carry out transfer of data.
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| CN 200710179333 CN101459466B (en) | 2007-12-12 | 2007-12-12 | Data transmission method and apparatus |
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| CN 200710179333 CN101459466B (en) | 2007-12-12 | 2007-12-12 | Data transmission method and apparatus |
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| EP3510825A1 (en) * | 2016-09-14 | 2019-07-17 | Huawei Technologies Co., Ltd. | Method and apparatus for accessing a wireless network |
| WO2019047202A1 (en) * | 2017-09-11 | 2019-03-14 | 海能达通信股份有限公司 | Access signal generating method and device and access signal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1722640A (en) * | 2004-07-13 | 2006-01-18 | 中兴通讯股份有限公司 | A multi-carrier based public physical channel assignment method |
| CN101079665A (en) * | 2006-05-23 | 2007-11-28 | 大唐移动通信设备有限公司 | A method for expanding coverage scope of time-division duplex system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1722640A (en) * | 2004-07-13 | 2006-01-18 | 中兴通讯股份有限公司 | A multi-carrier based public physical channel assignment method |
| CN101079665A (en) * | 2006-05-23 | 2007-11-28 | 大唐移动通信设备有限公司 | A method for expanding coverage scope of time-division duplex system |
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